drivers/gpu/drm/i915/intel_display.c

   1 /*
   2  * Copyright © 2006-2007 Intel Corporation
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  21  * DEALINGS IN THE SOFTWARE.
  22  *
  23  * Authors:
  24  *      Eric Anholt <eric@anholt.net>
  25  */
  26
  27 #include <linux/i2c.h>
  28 #include <linux/input.h>
  29 #include <linux/intel-iommu.h>
  30 #include <linux/kernel.h>
  31 #include <linux/module.h>
  32 #include <linux/reservation.h>
  33 #include <linux/slab.h>
  34 #include <linux/vgaarb.h>
  35
  36 #include <drm/drm_atomic.h>
  37 #include <drm/drm_atomic_helper.h>
  38 #include <drm/drm_atomic_uapi.h>
  39 #include <drm/drm_dp_helper.h>
  40 #include <drm/drm_edid.h>
  41 #include <drm/drm_fourcc.h>
  42 #include <drm/drm_plane_helper.h>
  43 #include <drm/drm_probe_helper.h>
  44 #include <drm/drm_rect.h>
  45 #include <drm/i915_drm.h>
  46
  47 #include "i915_drv.h"
  48 #include "i915_gem_clflush.h"
  49 #include "i915_trace.h"
  50 #include "intel_acpi.h"
  51 #include "intel_atomic.h"
  52 #include "intel_atomic_plane.h"
  53 #include "intel_color.h"
  54 #include "intel_cdclk.h"
  55 #include "intel_crt.h"
  56 #include "intel_ddi.h"
  57 #include "intel_dp.h"
  58 #include "intel_drv.h"
  59 #include "intel_dsi.h"
  60 #include "intel_dvo.h"
  61 #include "intel_fbc.h"
  62 #include "intel_fbdev.h"
  63 #include "intel_fifo_underrun.h"
  64 #include "intel_frontbuffer.h"
  65 #include "intel_gmbus.h"
  66 #include "intel_hdcp.h"
  67 #include "intel_hdmi.h"
  68 #include "intel_hotplug.h"
  69 #include "intel_lvds.h"
  70 #include "intel_overlay.h"
  71 #include "intel_pipe_crc.h"
  72 #include "intel_pm.h"
  73 #include "intel_psr.h"
  74 #include "intel_quirks.h"
  75 #include "intel_sdvo.h"
  76 #include "intel_sideband.h"
  77 #include "intel_sprite.h"
  78 #include "intel_tv.h"
  79 #include "intel_vdsc.h"
  80
  81 /* Primary plane formats for gen <= 3 */
  82 static const u32 i8xx_primary_formats[] = {
  83         DRM_FORMAT_C8,
  84         DRM_FORMAT_RGB565,
  85         DRM_FORMAT_XRGB1555,
  86         DRM_FORMAT_XRGB8888,
  87 };
  88
  89 /* Primary plane formats for gen >= 4 */
  90 static const u32 i965_primary_formats[] = {
  91         DRM_FORMAT_C8,
  92         DRM_FORMAT_RGB565,
  93         DRM_FORMAT_XRGB8888,
  94         DRM_FORMAT_XBGR8888,
  95         DRM_FORMAT_XRGB2101010,
  96         DRM_FORMAT_XBGR2101010,
  97 };
  98
  99 static const u64 i9xx_format_modifiers[] = {
 100         I915_FORMAT_MOD_X_TILED,
 101         DRM_FORMAT_MOD_LINEAR,
 102         DRM_FORMAT_MOD_INVALID
 103 };
 104
 105 /* Cursor formats */
 106 static const u32 intel_cursor_formats[] = {
 107         DRM_FORMAT_ARGB8888,
 108 };
 109
 110 static const u64 cursor_format_modifiers[] = {
 111         DRM_FORMAT_MOD_LINEAR,
 112         DRM_FORMAT_MOD_INVALID
 113 };
 114
 115 static void i9xx_crtc_clock_get(struct intel_crtc *crtc,
 116                                 struct intel_crtc_state *pipe_config);
 117 static void ironlake_pch_clock_get(struct intel_crtc *crtc,
 118                                    struct intel_crtc_state *pipe_config);
 119
 120 static int intel_framebuffer_init(struct intel_framebuffer *ifb,
 121                                   struct drm_i915_gem_object *obj,
 122                                   struct drm_mode_fb_cmd2 *mode_cmd);
 123 static void intel_set_pipe_timings(const struct intel_crtc_state *crtc_state);
 124 static void intel_set_pipe_src_size(const struct intel_crtc_state *crtc_state);
 125 static void intel_cpu_transcoder_set_m_n(const struct intel_crtc_state *crtc_state,
 126                                          const struct intel_link_m_n *m_n,
 127                                          const struct intel_link_m_n *m2_n2);
 128 static void i9xx_set_pipeconf(const struct intel_crtc_state *crtc_state);
 129 static void ironlake_set_pipeconf(const struct intel_crtc_state *crtc_state);
 130 static void haswell_set_pipeconf(const struct intel_crtc_state *crtc_state);
 131 static void bdw_set_pipemisc(const struct intel_crtc_state *crtc_state);
 132 static void vlv_prepare_pll(struct intel_crtc *crtc,
 133                             const struct intel_crtc_state *pipe_config);
 134 static void chv_prepare_pll(struct intel_crtc *crtc,
 135                             const struct intel_crtc_state *pipe_config);
 136 static void intel_begin_crtc_commit(struct intel_atomic_state *, struct intel_crtc *);
 137 static void intel_finish_crtc_commit(struct intel_atomic_state *, struct intel_crtc *);
 138 static void intel_crtc_init_scalers(struct intel_crtc *crtc,
 139                                     struct intel_crtc_state *crtc_state);
 140 static void skylake_pfit_enable(const struct intel_crtc_state *crtc_state);
 141 static void ironlake_pfit_disable(const struct intel_crtc_state *old_crtc_state);
 142 static void ironlake_pfit_enable(const struct intel_crtc_state *crtc_state);
 143 static void intel_modeset_setup_hw_state(struct drm_device *dev,
 144                                          struct drm_modeset_acquire_ctx *ctx);
 145 static void intel_pre_disable_primary_noatomic(struct drm_crtc *crtc);
 146
 147 struct intel_limit {
 148         struct {
 149                 int min, max;
 150         } dot, vco, n, m, m1, m2, p, p1;
 151
 152         struct {
 153                 int dot_limit;
 154                 int p2_slow, p2_fast;
 155         } p2;
 156 };
 157
 158 /* returns HPLL frequency in kHz */
 159 int vlv_get_hpll_vco(struct drm_i915_private *dev_priv)
 160 {
 161         int hpll_freq, vco_freq[] = { 800, 1600, 2000, 2400 };
 162
 163         /* Obtain SKU information */
 164         hpll_freq = vlv_cck_read(dev_priv, CCK_FUSE_REG) &
 165                 CCK_FUSE_HPLL_FREQ_MASK;
 166
 167         return vco_freq[hpll_freq] * 1000;
 168 }
 169
 170 int vlv_get_cck_clock(struct drm_i915_private *dev_priv,
 171                       const char *name, u32 reg, int ref_freq)
 172 {
 173         u32 val;
 174         int divider;
 175
 176         val = vlv_cck_read(dev_priv, reg);
 177         divider = val & CCK_FREQUENCY_VALUES;
 178
 179         WARN((val & CCK_FREQUENCY_STATUS) !=
 180              (divider << CCK_FREQUENCY_STATUS_SHIFT),
 181              "%s change in progress\n", name);
 182
 183         return DIV_ROUND_CLOSEST(ref_freq << 1, divider + 1);
 184 }
 185
 186 int vlv_get_cck_clock_hpll(struct drm_i915_private *dev_priv,
 187                            const char *name, u32 reg)
 188 {
 189         int hpll;
 190
 191         vlv_cck_get(dev_priv);
 192
 193         if (dev_priv->hpll_freq == 0)
 194                 dev_priv->hpll_freq = vlv_get_hpll_vco(dev_priv);
 195
 196         hpll = vlv_get_cck_clock(dev_priv, name, reg, dev_priv->hpll_freq);
 197
 198         vlv_cck_put(dev_priv);
 199
 200         return hpll;
 201 }
 202
 203 static void intel_update_czclk(struct drm_i915_private *dev_priv)
 204 {
 205         if (!(IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)))
 206                 return;
 207
 208         dev_priv->czclk_freq = vlv_get_cck_clock_hpll(dev_priv, "czclk",
 209                                                       CCK_CZ_CLOCK_CONTROL);
 210
 211         DRM_DEBUG_DRIVER("CZ clock rate: %d kHz\n", dev_priv->czclk_freq);
 212 }
 213
 214 static inline u32 /* units of 100MHz */
 215 intel_fdi_link_freq(struct drm_i915_private *dev_priv,
 216                     const struct intel_crtc_state *pipe_config)
 217 {
 218         if (HAS_DDI(dev_priv))
 219                 return pipe_config->port_clock; /* SPLL */
 220         else
 221                 return dev_priv->fdi_pll_freq;
 222 }
 223
 224 static const struct intel_limit intel_limits_i8xx_dac = {
 225         .dot = { .min = 25000, .max = 350000 },
 226         .vco = { .min = 908000, .max = 1512000 },
 227         .n = { .min = 2, .max = 16 },
 228         .m = { .min = 96, .max = 140 },
 229         .m1 = { .min = 18, .max = 26 },
 230         .m2 = { .min = 6, .max = 16 },
 231         .p = { .min = 4, .max = 128 },
 232         .p1 = { .min = 2, .max = 33 },
 233         .p2 = { .dot_limit = 165000,
 234                 .p2_slow = 4, .p2_fast = 2 },
 235 };
 236
 237 static const struct intel_limit intel_limits_i8xx_dvo = {
 238         .dot = { .min = 25000, .max = 350000 },
 239         .vco = { .min = 908000, .max = 1512000 },
 240         .n = { .min = 2, .max = 16 },
 241         .m = { .min = 96, .max = 140 },
 242         .m1 = { .min = 18, .max = 26 },
 243         .m2 = { .min = 6, .max = 16 },
 244         .p = { .min = 4, .max = 128 },
 245         .p1 = { .min = 2, .max = 33 },
 246         .p2 = { .dot_limit = 165000,
 247                 .p2_slow = 4, .p2_fast = 4 },
 248 };
 249
 250 static const struct intel_limit intel_limits_i8xx_lvds = {
 251         .dot = { .min = 25000, .max = 350000 },
 252         .vco = { .min = 908000, .max = 1512000 },
 253         .n = { .min = 2, .max = 16 },
 254         .m = { .min = 96, .max = 140 },
 255         .m1 = { .min = 18, .max = 26 },
 256         .m2 = { .min = 6, .max = 16 },
 257         .p = { .min = 4, .max = 128 },
 258         .p1 = { .min = 1, .max = 6 },
 259         .p2 = { .dot_limit = 165000,
 260                 .p2_slow = 14, .p2_fast = 7 },
 261 };
 262
 263 static const struct intel_limit intel_limits_i9xx_sdvo = {
 264         .dot = { .min = 20000, .max = 400000 },
 265         .vco = { .min = 1400000, .max = 2800000 },
 266         .n = { .min = 1, .max = 6 },
 267         .m = { .min = 70, .max = 120 },
 268         .m1 = { .min = 8, .max = 18 },
 269         .m2 = { .min = 3, .max = 7 },
 270         .p = { .min = 5, .max = 80 },
 271         .p1 = { .min = 1, .max = 8 },
 272         .p2 = { .dot_limit = 200000,
 273                 .p2_slow = 10, .p2_fast = 5 },
 274 };
 275
 276 static const struct intel_limit intel_limits_i9xx_lvds = {
 277         .dot = { .min = 20000, .max = 400000 },
 278         .vco = { .min = 1400000, .max = 2800000 },
 279         .n = { .min = 1, .max = 6 },
 280         .m = { .min = 70, .max = 120 },
 281         .m1 = { .min = 8, .max = 18 },
 282         .m2 = { .min = 3, .max = 7 },
 283         .p = { .min = 7, .max = 98 },
 284         .p1 = { .min = 1, .max = 8 },
 285         .p2 = { .dot_limit = 112000,
 286                 .p2_slow = 14, .p2_fast = 7 },
 287 };
 288
 289
 290 static const struct intel_limit intel_limits_g4x_sdvo = {
 291         .dot = { .min = 25000, .max = 270000 },
 292         .vco = { .min = 1750000, .max = 3500000},
 293         .n = { .min = 1, .max = 4 },
 294         .m = { .min = 104, .max = 138 },
 295         .m1 = { .min = 17, .max = 23 },
 296         .m2 = { .min = 5, .max = 11 },
 297         .p = { .min = 10, .max = 30 },
 298         .p1 = { .min = 1, .max = 3},
 299         .p2 = { .dot_limit = 270000,
 300                 .p2_slow = 10,
 301                 .p2_fast = 10
 302         },
 303 };
 304
 305 static const struct intel_limit intel_limits_g4x_hdmi = {
 306         .dot = { .min = 22000, .max = 400000 },
 307         .vco = { .min = 1750000, .max = 3500000},
 308         .n = { .min = 1, .max = 4 },
 309         .m = { .min = 104, .max = 138 },
 310         .m1 = { .min = 16, .max = 23 },
 311         .m2 = { .min = 5, .max = 11 },
 312         .p = { .min = 5, .max = 80 },
 313         .p1 = { .min = 1, .max = 8},
 314         .p2 = { .dot_limit = 165000,
 315                 .p2_slow = 10, .p2_fast = 5 },
 316 };
 317
 318 static const struct intel_limit intel_limits_g4x_single_channel_lvds = {
 319         .dot = { .min = 20000, .max = 115000 },
 320         .vco = { .min = 1750000, .max = 3500000 },
 321         .n = { .min = 1, .max = 3 },
 322         .m = { .min = 104, .max = 138 },
 323         .m1 = { .min = 17, .max = 23 },
 324         .m2 = { .min = 5, .max = 11 },
 325         .p = { .min = 28, .max = 112 },
 326         .p1 = { .min = 2, .max = 8 },
 327         .p2 = { .dot_limit = 0,
 328                 .p2_slow = 14, .p2_fast = 14
 329         },
 330 };
 331
 332 static const struct intel_limit intel_limits_g4x_dual_channel_lvds = {
 333         .dot = { .min = 80000, .max = 224000 },
 334         .vco = { .min = 1750000, .max = 3500000 },
 335         .n = { .min = 1, .max = 3 },
 336         .m = { .min = 104, .max = 138 },
 337         .m1 = { .min = 17, .max = 23 },
 338         .m2 = { .min = 5, .max = 11 },
 339         .p = { .min = 14, .max = 42 },
 340         .p1 = { .min = 2, .max = 6 },
 341         .p2 = { .dot_limit = 0,
 342                 .p2_slow = 7, .p2_fast = 7
 343         },
 344 };
 345
 346 static const struct intel_limit intel_limits_pineview_sdvo = {
 347         .dot = { .min = 20000, .max = 400000},
 348         .vco = { .min = 1700000, .max = 3500000 },
 349         /* Pineview's Ncounter is a ring counter */
 350         .n = { .min = 3, .max = 6 },
 351         .m = { .min = 2, .max = 256 },
 352         /* Pineview only has one combined m divider, which we treat as m2. */
 353         .m1 = { .min = 0, .max = 0 },
 354         .m2 = { .min = 0, .max = 254 },
 355         .p = { .min = 5, .max = 80 },
 356         .p1 = { .min = 1, .max = 8 },
 357         .p2 = { .dot_limit = 200000,
 358                 .p2_slow = 10, .p2_fast = 5 },
 359 };
 360
 361 static const struct intel_limit intel_limits_pineview_lvds = {
 362         .dot = { .min = 20000, .max = 400000 },
 363         .vco = { .min = 1700000, .max = 3500000 },
 364         .n = { .min = 3, .max = 6 },
 365         .m = { .min = 2, .max = 256 },
 366         .m1 = { .min = 0, .max = 0 },
 367         .m2 = { .min = 0, .max = 254 },
 368         .p = { .min = 7, .max = 112 },
 369         .p1 = { .min = 1, .max = 8 },
 370         .p2 = { .dot_limit = 112000,
 371                 .p2_slow = 14, .p2_fast = 14 },
 372 };
 373
 374 /* Ironlake / Sandybridge
 375  *
 376  * We calculate clock using (register_value + 2) for N/M1/M2, so here
 377  * the range value for them is (actual_value - 2).
 378  */
 379 static const struct intel_limit intel_limits_ironlake_dac = {
 380         .dot = { .min = 25000, .max = 350000 },
 381         .vco = { .min = 1760000, .max = 3510000 },
 382         .n = { .min = 1, .max = 5 },
 383         .m = { .min = 79, .max = 127 },
 384         .m1 = { .min = 12, .max = 22 },
 385         .m2 = { .min = 5, .max = 9 },
 386         .p = { .min = 5, .max = 80 },
 387         .p1 = { .min = 1, .max = 8 },
 388         .p2 = { .dot_limit = 225000,
 389                 .p2_slow = 10, .p2_fast = 5 },
 390 };
 391
 392 static const struct intel_limit intel_limits_ironlake_single_lvds = {
 393         .dot = { .min = 25000, .max = 350000 },
 394         .vco = { .min = 1760000, .max = 3510000 },
 395         .n = { .min = 1, .max = 3 },
 396         .m = { .min = 79, .max = 118 },
 397         .m1 = { .min = 12, .max = 22 },
 398         .m2 = { .min = 5, .max = 9 },
 399         .p = { .min = 28, .max = 112 },
 400         .p1 = { .min = 2, .max = 8 },
 401         .p2 = { .dot_limit = 225000,
 402                 .p2_slow = 14, .p2_fast = 14 },
 403 };
 404
 405 static const struct intel_limit intel_limits_ironlake_dual_lvds = {
 406         .dot = { .min = 25000, .max = 350000 },
 407         .vco = { .min = 1760000, .max = 3510000 },
 408         .n = { .min = 1, .max = 3 },
 409         .m = { .min = 79, .max = 127 },
 410         .m1 = { .min = 12, .max = 22 },
 411         .m2 = { .min = 5, .max = 9 },
 412         .p = { .min = 14, .max = 56 },
 413         .p1 = { .min = 2, .max = 8 },
 414         .p2 = { .dot_limit = 225000,
 415                 .p2_slow = 7, .p2_fast = 7 },
 416 };
 417
 418 /* LVDS 100mhz refclk limits. */
 419 static const struct intel_limit intel_limits_ironlake_single_lvds_100m = {
 420         .dot = { .min = 25000, .max = 350000 },
 421         .vco = { .min = 1760000, .max = 3510000 },
 422         .n = { .min = 1, .max = 2 },
 423         .m = { .min = 79, .max = 126 },
 424         .m1 = { .min = 12, .max = 22 },
 425         .m2 = { .min = 5, .max = 9 },
 426         .p = { .min = 28, .max = 112 },
 427         .p1 = { .min = 2, .max = 8 },
 428         .p2 = { .dot_limit = 225000,
 429                 .p2_slow = 14, .p2_fast = 14 },
 430 };
 431
 432 static const struct intel_limit intel_limits_ironlake_dual_lvds_100m = {
 433         .dot = { .min = 25000, .max = 350000 },
 434         .vco = { .min = 1760000, .max = 3510000 },
 435         .n = { .min = 1, .max = 3 },
 436         .m = { .min = 79, .max = 126 },
 437         .m1 = { .min = 12, .max = 22 },
 438         .m2 = { .min = 5, .max = 9 },
 439         .p = { .min = 14, .max = 42 },
 440         .p1 = { .min = 2, .max = 6 },
 441         .p2 = { .dot_limit = 225000,
 442                 .p2_slow = 7, .p2_fast = 7 },
 443 };
 444
 445 static const struct intel_limit intel_limits_vlv = {
 446          /*
 447           * These are the data rate limits (measured in fast clocks)
 448           * since those are the strictest limits we have. The fast
 449           * clock and actual rate limits are more relaxed, so checking
 450           * them would make no difference.
 451           */
 452         .dot = { .min = 25000 * 5, .max = 270000 * 5 },
 453         .vco = { .min = 4000000, .max = 6000000 },
 454         .n = { .min = 1, .max = 7 },
 455         .m1 = { .min = 2, .max = 3 },
 456         .m2 = { .min = 11, .max = 156 },
 457         .p1 = { .min = 2, .max = 3 },
 458         .p2 = { .p2_slow = 2, .p2_fast = 20 }, /* slow=min, fast=max */
 459 };
 460
 461 static const struct intel_limit intel_limits_chv = {
 462         /*
 463          * These are the data rate limits (measured in fast clocks)
 464          * since those are the strictest limits we have.  The fast
 465          * clock and actual rate limits are more relaxed, so checking
 466          * them would make no difference.
 467          */
 468         .dot = { .min = 25000 * 5, .max = 540000 * 5},
 469         .vco = { .min = 4800000, .max = 6480000 },
 470         .n = { .min = 1, .max = 1 },
 471         .m1 = { .min = 2, .max = 2 },
 472         .m2 = { .min = 24 << 22, .max = 175 << 22 },
 473         .p1 = { .min = 2, .max = 4 },
 474         .p2 = { .p2_slow = 1, .p2_fast = 14 },
 475 };
 476
 477 static const struct intel_limit intel_limits_bxt = {
 478         /* FIXME: find real dot limits */
 479         .dot = { .min = 0, .max = INT_MAX },
 480         .vco = { .min = 4800000, .max = 6700000 },
 481         .n = { .min = 1, .max = 1 },
 482         .m1 = { .min = 2, .max = 2 },
 483         /* FIXME: find real m2 limits */
 484         .m2 = { .min = 2 << 22, .max = 255 << 22 },
 485         .p1 = { .min = 2, .max = 4 },
 486         .p2 = { .p2_slow = 1, .p2_fast = 20 },
 487 };
 488
 489 /* WA Display #0827: Gen9:all */
 490 static void
 491 skl_wa_827(struct drm_i915_private *dev_priv, int pipe, bool enable)
 492 {
 493         if (enable)
 494                 I915_WRITE(CLKGATE_DIS_PSL(pipe),
 495                            I915_READ(CLKGATE_DIS_PSL(pipe)) |
 496                            DUPS1_GATING_DIS | DUPS2_GATING_DIS);
 497         else
 498                 I915_WRITE(CLKGATE_DIS_PSL(pipe),
 499                            I915_READ(CLKGATE_DIS_PSL(pipe)) &
 500                            ~(DUPS1_GATING_DIS | DUPS2_GATING_DIS));
 501 }
 502
 503 /* Wa_2006604312:icl */
 504 static void
 505 icl_wa_scalerclkgating(struct drm_i915_private *dev_priv, enum pipe pipe,
 506                        bool enable)
 507 {
 508         if (enable)
 509                 I915_WRITE(CLKGATE_DIS_PSL(pipe),
 510                            I915_READ(CLKGATE_DIS_PSL(pipe)) | DPFR_GATING_DIS);
 511         else
 512                 I915_WRITE(CLKGATE_DIS_PSL(pipe),
 513                            I915_READ(CLKGATE_DIS_PSL(pipe)) & ~DPFR_GATING_DIS);
 514 }
 515
 516 static bool
 517 needs_modeset(const struct drm_crtc_state *state)
 518 {
 519         return drm_atomic_crtc_needs_modeset(state);
 520 }
 521
 522 /*
 523  * Platform specific helpers to calculate the port PLL loopback- (clock.m),
 524  * and post-divider (clock.p) values, pre- (clock.vco) and post-divided fast
 525  * (clock.dot) clock rates. This fast dot clock is fed to the port's IO logic.
 526  * The helpers' return value is the rate of the clock that is fed to the
 527  * display engine's pipe which can be the above fast dot clock rate or a
 528  * divided-down version of it.
 529  */
 530 /* m1 is reserved as 0 in Pineview, n is a ring counter */
 531 static int pnv_calc_dpll_params(int refclk, struct dpll *clock)
 532 {
 533         clock->m = clock->m2 + 2;
 534         clock->p = clock->p1 * clock->p2;
 535         if (WARN_ON(clock->n == 0 || clock->p == 0))
 536                 return 0;
 537         clock->vco = DIV_ROUND_CLOSEST(refclk * clock->m, clock->n);
 538         clock->dot = DIV_ROUND_CLOSEST(clock->vco, clock->p);
 539
 540         return clock->dot;
 541 }
 542
 543 static u32 i9xx_dpll_compute_m(struct dpll *dpll)
 544 {
 545         return 5 * (dpll->m1 + 2) + (dpll->m2 + 2);
 546 }
 547
 548 static int i9xx_calc_dpll_params(int refclk, struct dpll *clock)
 549 {
 550         clock->m = i9xx_dpll_compute_m(clock);
 551         clock->p = clock->p1 * clock->p2;
 552         if (WARN_ON(clock->n + 2 == 0 || clock->p == 0))
 553                 return 0;
 554         clock->vco = DIV_ROUND_CLOSEST(refclk * clock->m, clock->n + 2);
 555         clock->dot = DIV_ROUND_CLOSEST(clock->vco, clock->p);
 556
 557         return clock->dot;
 558 }
 559
 560 static int vlv_calc_dpll_params(int refclk, struct dpll *clock)
 561 {
 562         clock->m = clock->m1 * clock->m2;
 563         clock->p = clock->p1 * clock->p2;
 564         if (WARN_ON(clock->n == 0 || clock->p == 0))
 565                 return 0;
 566         clock->vco = DIV_ROUND_CLOSEST(refclk * clock->m, clock->n);
 567         clock->dot = DIV_ROUND_CLOSEST(clock->vco, clock->p);
 568
 569         return clock->dot / 5;
 570 }
 571
 572 int chv_calc_dpll_params(int refclk, struct dpll *clock)
 573 {
 574         clock->m = clock->m1 * clock->m2;
 575         clock->p = clock->p1 * clock->p2;
 576         if (WARN_ON(clock->n == 0 || clock->p == 0))
 577                 return 0;
 578         clock->vco = DIV_ROUND_CLOSEST_ULL(mul_u32_u32(refclk, clock->m),
 579                                            clock->n << 22);
 580         clock->dot = DIV_ROUND_CLOSEST(clock->vco, clock->p);
 581
 582         return clock->dot / 5;
 583 }
 584
 585 #define INTELPllInvalid(s)   do { /* DRM_DEBUG(s); */ return false; } while (0)
 586
 587 /*
 588  * Returns whether the given set of divisors are valid for a given refclk with
 589  * the given connectors.
 590  */
 591 static bool intel_PLL_is_valid(struct drm_i915_private *dev_priv,
 592                                const struct intel_limit *limit,
 593                                const struct dpll *clock)
 594 {
 595         if (clock->n   < limit->n.min   || limit->n.max   < clock->n)
 596                 INTELPllInvalid("n out of range\n");
 597         if (clock->p1  < limit->p1.min  || limit->p1.max  < clock->p1)
 598                 INTELPllInvalid("p1 out of range\n");
 599         if (clock->m2  < limit->m2.min  || limit->m2.max  < clock->m2)
 600                 INTELPllInvalid("m2 out of range\n");
 601         if (clock->m1  < limit->m1.min  || limit->m1.max  < clock->m1)
 602                 INTELPllInvalid("m1 out of range\n");
 603
 604         if (!IS_PINEVIEW(dev_priv) && !IS_VALLEYVIEW(dev_priv) &&
 605             !IS_CHERRYVIEW(dev_priv) && !IS_GEN9_LP(dev_priv))
 606                 if (clock->m1 <= clock->m2)
 607                         INTELPllInvalid("m1 <= m2\n");
 608
 609         if (!IS_VALLEYVIEW(dev_priv) && !IS_CHERRYVIEW(dev_priv) &&
 610             !IS_GEN9_LP(dev_priv)) {
 611                 if (clock->p < limit->p.min || limit->p.max < clock->p)
 612                         INTELPllInvalid("p out of range\n");
 613                 if (clock->m < limit->m.min || limit->m.max < clock->m)
 614                         INTELPllInvalid("m out of range\n");
 615         }
 616
 617         if (clock->vco < limit->vco.min || limit->vco.max < clock->vco)
 618                 INTELPllInvalid("vco out of range\n");
 619         /* XXX: We may need to be checking "Dot clock" depending on the multiplier,
 620          * connector, etc., rather than just a single range.
 621          */
 622         if (clock->dot < limit->dot.min || limit->dot.max < clock->dot)
 623                 INTELPllInvalid("dot out of range\n");
 624
 625         return true;
 626 }
 627
 628 static int
 629 i9xx_select_p2_div(const struct intel_limit *limit,
 630                    const struct intel_crtc_state *crtc_state,
 631                    int target)
 632 {
 633         struct drm_i915_private *dev_priv = to_i915(crtc_state->base.crtc->dev);
 634
 635         if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS)) {
 636                 /*
 637                  * For LVDS just rely on its current settings for dual-channel.
 638                  * We haven't figured out how to reliably set up different
 639                  * single/dual channel state, if we even can.
 640                  */
 641                 if (intel_is_dual_link_lvds(dev_priv))
 642                         return limit->p2.p2_fast;
 643                 else
 644                         return limit->p2.p2_slow;
 645         } else {
 646                 if (target < limit->p2.dot_limit)
 647                         return limit->p2.p2_slow;
 648                 else
 649                         return limit->p2.p2_fast;
 650         }
 651 }
 652
 653 /*
 654  * Returns a set of divisors for the desired target clock with the given
 655  * refclk, or FALSE.  The returned values represent the clock equation:
 656  * reflck * (5 * (m1 + 2) + (m2 + 2)) / (n + 2) / p1 / p2.
 657  *
 658  * Target and reference clocks are specified in kHz.
 659  *
 660  * If match_clock is provided, then best_clock P divider must match the P
 661  * divider from @match_clock used for LVDS downclocking.
 662  */
 663 static bool
 664 i9xx_find_best_dpll(const struct intel_limit *limit,
 665                     struct intel_crtc_state *crtc_state,
 666                     int target, int refclk, struct dpll *match_clock,
 667                     struct dpll *best_clock)
 668 {
 669         struct drm_device *dev = crtc_state->base.crtc->dev;
 670         struct dpll clock;
 671         int err = target;
 672
 673         memset(best_clock, 0, sizeof(*best_clock));
 674
 675         clock.p2 = i9xx_select_p2_div(limit, crtc_state, target);
 676
 677         for (clock.m1 = limit->m1.min; clock.m1 <= limit->m1.max;
 678              clock.m1++) {
 679                 for (clock.m2 = limit->m2.min;
 680                      clock.m2 <= limit->m2.max; clock.m2++) {
 681                         if (clock.m2 >= clock.m1)
 682                                 break;
 683                         for (clock.n = limit->n.min;
 684                              clock.n <= limit->n.max; clock.n++) {
 685                                 for (clock.p1 = limit->p1.min;
 686                                         clock.p1 <= limit->p1.max; clock.p1++) {
 687                                         int this_err;
 688
 689                                         i9xx_calc_dpll_params(refclk, &clock);
 690                                         if (!intel_PLL_is_valid(to_i915(dev),
 691                                                                 limit,
 692                                                                 &clock))
 693                                                 continue;
 694                                         if (match_clock &&
 695                                             clock.p != match_clock->p)
 696                                                 continue;
 697
 698                                         this_err = abs(clock.dot - target);
 699                                         if (this_err < err) {
 700                                                 *best_clock = clock;
 701                                                 err = this_err;
 702                                         }
 703                                 }
 704                         }
 705                 }
 706         }
 707
 708         return (err != target);
 709 }
 710
 711 /*
 712  * Returns a set of divisors for the desired target clock with the given
 713  * refclk, or FALSE.  The returned values represent the clock equation:
 714  * reflck * (5 * (m1 + 2) + (m2 + 2)) / (n + 2) / p1 / p2.
 715  *
 716  * Target and reference clocks are specified in kHz.
 717  *
 718  * If match_clock is provided, then best_clock P divider must match the P
 719  * divider from @match_clock used for LVDS downclocking.
 720  */
 721 static bool
 722 pnv_find_best_dpll(const struct intel_limit *limit,
 723                    struct intel_crtc_state *crtc_state,
 724                    int target, int refclk, struct dpll *match_clock,
 725                    struct dpll *best_clock)
 726 {
 727         struct drm_device *dev = crtc_state->base.crtc->dev;
 728         struct dpll clock;
 729         int err = target;
 730
 731         memset(best_clock, 0, sizeof(*best_clock));
 732
 733         clock.p2 = i9xx_select_p2_div(limit, crtc_state, target);
 734
 735         for (clock.m1 = limit->m1.min; clock.m1 <= limit->m1.max;
 736              clock.m1++) {
 737                 for (clock.m2 = limit->m2.min;
 738                      clock.m2 <= limit->m2.max; clock.m2++) {
 739                         for (clock.n = limit->n.min;
 740                              clock.n <= limit->n.max; clock.n++) {
 741                                 for (clock.p1 = limit->p1.min;
 742                                         clock.p1 <= limit->p1.max; clock.p1++) {
 743                                         int this_err;
 744
 745                                         pnv_calc_dpll_params(refclk, &clock);
 746                                         if (!intel_PLL_is_valid(to_i915(dev),
 747                                                                 limit,
 748                                                                 &clock))
 749                                                 continue;
 750                                         if (match_clock &&
 751                                             clock.p != match_clock->p)
 752                                                 continue;
 753
 754                                         this_err = abs(clock.dot - target);
 755                                         if (this_err < err) {
 756                                                 *best_clock = clock;
 757                                                 err = this_err;
 758                                         }
 759                                 }
 760                         }
 761                 }
 762         }
 763
 764         return (err != target);
 765 }
 766
 767 /*
 768  * Returns a set of divisors for the desired target clock with the given
 769  * refclk, or FALSE.  The returned values represent the clock equation:
 770  * reflck * (5 * (m1 + 2) + (m2 + 2)) / (n + 2) / p1 / p2.
 771  *
 772  * Target and reference clocks are specified in kHz.
 773  *
 774  * If match_clock is provided, then best_clock P divider must match the P
 775  * divider from @match_clock used for LVDS downclocking.
 776  */
 777 static bool
 778 g4x_find_best_dpll(const struct intel_limit *limit,
 779                    struct intel_crtc_state *crtc_state,
 780                    int target, int refclk, struct dpll *match_clock,
 781                    struct dpll *best_clock)
 782 {
 783         struct drm_device *dev = crtc_state->base.crtc->dev;
 784         struct dpll clock;
 785         int max_n;
 786         bool found = false;
 787         /* approximately equals target * 0.00585 */
 788         int err_most = (target >> 8) + (target >> 9);
 789
 790         memset(best_clock, 0, sizeof(*best_clock));
 791
 792         clock.p2 = i9xx_select_p2_div(limit, crtc_state, target);
 793
 794         max_n = limit->n.max;
 795         /* based on hardware requirement, prefer smaller n to precision */
 796         for (clock.n = limit->n.min; clock.n <= max_n; clock.n++) {
 797                 /* based on hardware requirement, prefere larger m1,m2 */
 798                 for (clock.m1 = limit->m1.max;
 799                      clock.m1 >= limit->m1.min; clock.m1--) {
 800                         for (clock.m2 = limit->m2.max;
 801                              clock.m2 >= limit->m2.min; clock.m2--) {
 802                                 for (clock.p1 = limit->p1.max;
 803                                      clock.p1 >= limit->p1.min; clock.p1--) {
 804                                         int this_err;
 805
 806                                         i9xx_calc_dpll_params(refclk, &clock);
 807                                         if (!intel_PLL_is_valid(to_i915(dev),
 808                                                                 limit,
 809                                                                 &clock))
 810                                                 continue;
 811
 812                                         this_err = abs(clock.dot - target);
 813                                         if (this_err < err_most) {
 814                                                 *best_clock = clock;
 815                                                 err_most = this_err;
 816                                                 max_n = clock.n;
 817                                                 found = true;
 818                                         }
 819                                 }
 820                         }
 821                 }
 822         }
 823         return found;
 824 }
 825
 826 /*
 827  * Check if the calculated PLL configuration is more optimal compared to the
 828  * best configuration and error found so far. Return the calculated error.
 829  */
 830 static bool vlv_PLL_is_optimal(struct drm_device *dev, int target_freq,
 831                                const struct dpll *calculated_clock,
 832                                const struct dpll *best_clock,
 833                                unsigned int best_error_ppm,
 834                                unsigned int *error_ppm)
 835 {
 836         /*
 837          * For CHV ignore the error and consider only the P value.
 838          * Prefer a bigger P value based on HW requirements.
 839          */
 840         if (IS_CHERRYVIEW(to_i915(dev))) {
 841                 *error_ppm = 0;
 842
 843                 return calculated_clock->p > best_clock->p;
 844         }
 845
 846         if (WARN_ON_ONCE(!target_freq))
 847                 return false;
 848
 849         *error_ppm = div_u64(1000000ULL *
 850                                 abs(target_freq - calculated_clock->dot),
 851                              target_freq);
 852         /*
 853          * Prefer a better P value over a better (smaller) error if the error
 854          * is small. Ensure this preference for future configurations too by
 855          * setting the error to 0.
 856          */
 857         if (*error_ppm < 100 && calculated_clock->p > best_clock->p) {
 858                 *error_ppm = 0;
 859
 860                 return true;
 861         }
 862
 863         return *error_ppm + 10 < best_error_ppm;
 864 }
 865
 866 /*
 867  * Returns a set of divisors for the desired target clock with the given
 868  * refclk, or FALSE.  The returned values represent the clock equation:
 869  * reflck * (5 * (m1 + 2) + (m2 + 2)) / (n + 2) / p1 / p2.
 870  */
 871 static bool
 872 vlv_find_best_dpll(const struct intel_limit *limit,
 873                    struct intel_crtc_state *crtc_state,
 874                    int target, int refclk, struct dpll *match_clock,
 875                    struct dpll *best_clock)
 876 {
 877         struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
 878         struct drm_device *dev = crtc->base.dev;
 879         struct dpll clock;
 880         unsigned int bestppm = 1000000;
 881         /* min update 19.2 MHz */
 882         int max_n = min(limit->n.max, refclk / 19200);
 883         bool found = false;
 884
 885         target *= 5; /* fast clock */
 886
 887         memset(best_clock, 0, sizeof(*best_clock));
 888
 889         /* based on hardware requirement, prefer smaller n to precision */
 890         for (clock.n = limit->n.min; clock.n <= max_n; clock.n++) {
 891                 for (clock.p1 = limit->p1.max; clock.p1 >= limit->p1.min; clock.p1--) {
 892                         for (clock.p2 = limit->p2.p2_fast; clock.p2 >= limit->p2.p2_slow;
 893                              clock.p2 -= clock.p2 > 10 ? 2 : 1) {
 894                                 clock.p = clock.p1 * clock.p2;
 895                                 /* based on hardware requirement, prefer bigger m1,m2 values */
 896                                 for (clock.m1 = limit->m1.min; clock.m1 <= limit->m1.max; clock.m1++) {
 897                                         unsigned int ppm;
 898
 899                                         clock.m2 = DIV_ROUND_CLOSEST(target * clock.p * clock.n,
 900                                                                      refclk * clock.m1);
 901
 902                                         vlv_calc_dpll_params(refclk, &clock);
 903
 904                                         if (!intel_PLL_is_valid(to_i915(dev),
 905                                                                 limit,
 906                                                                 &clock))
 907                                                 continue;
 908
 909                                         if (!vlv_PLL_is_optimal(dev, target,
 910                                                                 &clock,
 911                                                                 best_clock,
 912                                                                 bestppm, &ppm))
 913                                                 continue;
 914
 915                                         *best_clock = clock;
 916                                         bestppm = ppm;
 917                                         found = true;
 918                                 }
 919                         }
 920                 }
 921         }
 922
 923         return found;
 924 }
 925
 926 /*
 927  * Returns a set of divisors for the desired target clock with the given
 928  * refclk, or FALSE.  The returned values represent the clock equation:
 929  * reflck * (5 * (m1 + 2) + (m2 + 2)) / (n + 2) / p1 / p2.
 930  */
 931 static bool
 932 chv_find_best_dpll(const struct intel_limit *limit,
 933                    struct intel_crtc_state *crtc_state,
 934                    int target, int refclk, struct dpll *match_clock,
 935                    struct dpll *best_clock)
 936 {
 937         struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
 938         struct drm_device *dev = crtc->base.dev;
 939         unsigned int best_error_ppm;
 940         struct dpll clock;
 941         u64 m2;
 942         int found = false;
 943
 944         memset(best_clock, 0, sizeof(*best_clock));
 945         best_error_ppm = 1000000;
 946
 947         /*
 948          * Based on hardware doc, the n always set to 1, and m1 always
 949          * set to 2.  If requires to support 200Mhz refclk, we need to
 950          * revisit this because n may not 1 anymore.
 951          */
 952         clock.n = 1, clock.m1 = 2;
 953         target *= 5;    /* fast clock */
 954
 955         for (clock.p1 = limit->p1.max; clock.p1 >= limit->p1.min; clock.p1--) {
 956                 for (clock.p2 = limit->p2.p2_fast;
 957                                 clock.p2 >= limit->p2.p2_slow;
 958                                 clock.p2 -= clock.p2 > 10 ? 2 : 1) {
 959                         unsigned int error_ppm;
 960
 961                         clock.p = clock.p1 * clock.p2;
 962
 963                         m2 = DIV_ROUND_CLOSEST_ULL(mul_u32_u32(target, clock.p * clock.n) << 22,
 964                                                    refclk * clock.m1);
 965
 966                         if (m2 > INT_MAX/clock.m1)
 967                                 continue;
 968
 969                         clock.m2 = m2;
 970
 971                         chv_calc_dpll_params(refclk, &clock);
 972
 973                         if (!intel_PLL_is_valid(to_i915(dev), limit, &clock))
 974                                 continue;
 975
 976                         if (!vlv_PLL_is_optimal(dev, target, &clock, best_clock,
 977                                                 best_error_ppm, &error_ppm))
 978                                 continue;
 979
 980                         *best_clock = clock;
 981                         best_error_ppm = error_ppm;
 982                         found = true;
 983                 }
 984         }
 985
 986         return found;
 987 }
 988
 989 bool bxt_find_best_dpll(struct intel_crtc_state *crtc_state,
 990                         struct dpll *best_clock)
 991 {
 992         int refclk = 100000;
 993         const struct intel_limit *limit = &intel_limits_bxt;
 994
 995         return chv_find_best_dpll(limit, crtc_state,
 996                                   crtc_state->port_clock, refclk,
 997                                   NULL, best_clock);
 998 }
 999
1000 bool intel_crtc_active(struct intel_crtc *crtc)
1001 {
1002         /* Be paranoid as we can arrive here with only partial
1003          * state retrieved from the hardware during setup.
1004          *
1005          * We can ditch the adjusted_mode.crtc_clock check as soon
1006          * as Haswell has gained clock readout/fastboot support.
1007          *
1008          * We can ditch the crtc->primary->state->fb check as soon as we can
1009          * properly reconstruct framebuffers.
1010          *
1011          * FIXME: The intel_crtc->active here should be switched to
1012          * crtc->state->active once we have proper CRTC states wired up
1013          * for atomic.
1014          */
1015         return crtc->active && crtc->base.primary->state->fb &&
1016                 crtc->config->base.adjusted_mode.crtc_clock;
1017 }
1018
1019 enum transcoder intel_pipe_to_cpu_transcoder(struct drm_i915_private *dev_priv,
1020                                              enum pipe pipe)
1021 {
1022         struct intel_crtc *crtc = intel_get_crtc_for_pipe(dev_priv, pipe);
1023
1024         return crtc->config->cpu_transcoder;
1025 }
1026
1027 static bool pipe_scanline_is_moving(struct drm_i915_private *dev_priv,
1028                                     enum pipe pipe)
1029 {
1030         i915_reg_t reg = PIPEDSL(pipe);
1031         u32 line1, line2;
1032         u32 line_mask;
1033
1034         if (IS_GEN(dev_priv, 2))
1035                 line_mask = DSL_LINEMASK_GEN2;
1036         else
1037                 line_mask = DSL_LINEMASK_GEN3;
1038
1039         line1 = I915_READ(reg) & line_mask;
1040         msleep(5);
1041         line2 = I915_READ(reg) & line_mask;
1042
1043         return line1 != line2;
1044 }
1045
1046 static void wait_for_pipe_scanline_moving(struct intel_crtc *crtc, bool state)
1047 {
1048         struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
1049         enum pipe pipe = crtc->pipe;
1050
1051         /* Wait for the display line to settle/start moving */
1052         if (wait_for(pipe_scanline_is_moving(dev_priv, pipe) == state, 100))
1053                 DRM_ERROR("pipe %c scanline %s wait timed out\n",
1054                           pipe_name(pipe), onoff(state));
1055 }
1056
1057 static void intel_wait_for_pipe_scanline_stopped(struct intel_crtc *crtc)
1058 {
1059         wait_for_pipe_scanline_moving(crtc, false);
1060 }
1061
1062 static void intel_wait_for_pipe_scanline_moving(struct intel_crtc *crtc)
1063 {
1064         wait_for_pipe_scanline_moving(crtc, true);
1065 }
1066
1067 static void
1068 intel_wait_for_pipe_off(const struct intel_crtc_state *old_crtc_state)
1069 {
1070         struct intel_crtc *crtc = to_intel_crtc(old_crtc_state->base.crtc);
1071         struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
1072
1073         if (INTEL_GEN(dev_priv) >= 4) {
1074                 enum transcoder cpu_transcoder = old_crtc_state->cpu_transcoder;
1075                 i915_reg_t reg = PIPECONF(cpu_transcoder);
1076
1077                 /* Wait for the Pipe State to go off */
1078                 if (intel_wait_for_register(&dev_priv->uncore,
1079                                             reg, I965_PIPECONF_ACTIVE, 0,
1080                                             100))
1081                         WARN(1, "pipe_off wait timed out\n");
1082         } else {
1083                 intel_wait_for_pipe_scanline_stopped(crtc);
1084         }
1085 }
1086
1087 /* Only for pre-ILK configs */
1088 void assert_pll(struct drm_i915_private *dev_priv,
1089                 enum pipe pipe, bool state)
1090 {
1091         u32 val;
1092         bool cur_state;
1093
1094         val = I915_READ(DPLL(pipe));
1095         cur_state = !!(val & DPLL_VCO_ENABLE);
1096         I915_STATE_WARN(cur_state != state,
1097              "PLL state assertion failure (expected %s, current %s)\n",
1098                         onoff(state), onoff(cur_state));
1099 }
1100
1101 /* XXX: the dsi pll is shared between MIPI DSI ports */
1102 void assert_dsi_pll(struct drm_i915_private *dev_priv, bool state)
1103 {
1104         u32 val;
1105         bool cur_state;
1106
1107         vlv_cck_get(dev_priv);
1108         val = vlv_cck_read(dev_priv, CCK_REG_DSI_PLL_CONTROL);
1109         vlv_cck_put(dev_priv);
1110
1111         cur_state = val & DSI_PLL_VCO_EN;
1112         I915_STATE_WARN(cur_state != state,
1113              "DSI PLL state assertion failure (expected %s, current %s)\n",
1114                         onoff(state), onoff(cur_state));
1115 }
1116
1117 static void assert_fdi_tx(struct drm_i915_private *dev_priv,
1118                           enum pipe pipe, bool state)
1119 {
1120         bool cur_state;
1121         enum transcoder cpu_transcoder = intel_pipe_to_cpu_transcoder(dev_priv,
1122                                                                       pipe);
1123
1124         if (HAS_DDI(dev_priv)) {
1125                 /* DDI does not have a specific FDI_TX register */
1126                 u32 val = I915_READ(TRANS_DDI_FUNC_CTL(cpu_transcoder));
1127                 cur_state = !!(val & TRANS_DDI_FUNC_ENABLE);
1128         } else {
1129                 u32 val = I915_READ(FDI_TX_CTL(pipe));
1130                 cur_state = !!(val & FDI_TX_ENABLE);
1131         }
1132         I915_STATE_WARN(cur_state != state,
1133              "FDI TX state assertion failure (expected %s, current %s)\n",
1134                         onoff(state), onoff(cur_state));
1135 }
1136 #define assert_fdi_tx_enabled(d, p) assert_fdi_tx(d, p, true)
1137 #define assert_fdi_tx_disabled(d, p) assert_fdi_tx(d, p, false)
1138
1139 static void assert_fdi_rx(struct drm_i915_private *dev_priv,
1140                           enum pipe pipe, bool state)
1141 {
1142         u32 val;
1143         bool cur_state;
1144
1145         val = I915_READ(FDI_RX_CTL(pipe));
1146         cur_state = !!(val & FDI_RX_ENABLE);
1147         I915_STATE_WARN(cur_state != state,
1148              "FDI RX state assertion failure (expected %s, current %s)\n",
1149                         onoff(state), onoff(cur_state));
1150 }
1151 #define assert_fdi_rx_enabled(d, p) assert_fdi_rx(d, p, true)
1152 #define assert_fdi_rx_disabled(d, p) assert_fdi_rx(d, p, false)
1153
1154 static void assert_fdi_tx_pll_enabled(struct drm_i915_private *dev_priv,
1155                                       enum pipe pipe)
1156 {
1157         u32 val;
1158
1159         /* ILK FDI PLL is always enabled */
1160         if (IS_GEN(dev_priv, 5))
1161                 return;
1162
1163         /* On Haswell, DDI ports are responsible for the FDI PLL setup */
1164         if (HAS_DDI(dev_priv))
1165                 return;
1166
1167         val = I915_READ(FDI_TX_CTL(pipe));
1168         I915_STATE_WARN(!(val & FDI_TX_PLL_ENABLE), "FDI TX PLL assertion failure, should be active but is disabled\n");
1169 }
1170
1171 void assert_fdi_rx_pll(struct drm_i915_private *dev_priv,
1172                        enum pipe pipe, bool state)
1173 {
1174         u32 val;
1175         bool cur_state;
1176
1177         val = I915_READ(FDI_RX_CTL(pipe));
1178         cur_state = !!(val & FDI_RX_PLL_ENABLE);
1179         I915_STATE_WARN(cur_state != state,
1180              "FDI RX PLL assertion failure (expected %s, current %s)\n",
1181                         onoff(state), onoff(cur_state));
1182 }
1183
1184 void assert_panel_unlocked(struct drm_i915_private *dev_priv, enum pipe pipe)
1185 {
1186         i915_reg_t pp_reg;
1187         u32 val;
1188         enum pipe panel_pipe = INVALID_PIPE;
1189         bool locked = true;
1190
1191         if (WARN_ON(HAS_DDI(dev_priv)))
1192                 return;
1193
1194         if (HAS_PCH_SPLIT(dev_priv)) {
1195                 u32 port_sel;
1196
1197                 pp_reg = PP_CONTROL(0);
1198                 port_sel = I915_READ(PP_ON_DELAYS(0)) & PANEL_PORT_SELECT_MASK;
1199
1200                 switch (port_sel) {
1201                 case PANEL_PORT_SELECT_LVDS:
1202                         intel_lvds_port_enabled(dev_priv, PCH_LVDS, &panel_pipe);
1203                         break;
1204                 case PANEL_PORT_SELECT_DPA:
1205                         intel_dp_port_enabled(dev_priv, DP_A, PORT_A, &panel_pipe);
1206                         break;
1207                 case PANEL_PORT_SELECT_DPC:
1208                         intel_dp_port_enabled(dev_priv, PCH_DP_C, PORT_C, &panel_pipe);
1209                         break;
1210                 case PANEL_PORT_SELECT_DPD:
1211                         intel_dp_port_enabled(dev_priv, PCH_DP_D, PORT_D, &panel_pipe);
1212                         break;
1213                 default:
1214                         MISSING_CASE(port_sel);
1215                         break;
1216                 }
1217         } else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
1218                 /* presumably write lock depends on pipe, not port select */
1219                 pp_reg = PP_CONTROL(pipe);
1220                 panel_pipe = pipe;
1221         } else {
1222                 u32 port_sel;
1223
1224                 pp_reg = PP_CONTROL(0);
1225                 port_sel = I915_READ(PP_ON_DELAYS(0)) & PANEL_PORT_SELECT_MASK;
1226
1227                 WARN_ON(port_sel != PANEL_PORT_SELECT_LVDS);
1228                 intel_lvds_port_enabled(dev_priv, LVDS, &panel_pipe);
1229         }
1230
1231         val = I915_READ(pp_reg);
1232         if (!(val & PANEL_POWER_ON) ||
1233             ((val & PANEL_UNLOCK_MASK) == PANEL_UNLOCK_REGS))
1234                 locked = false;
1235
1236         I915_STATE_WARN(panel_pipe == pipe && locked,
1237              "panel assertion failure, pipe %c regs locked\n",
1238              pipe_name(pipe));
1239 }
1240
1241 void assert_pipe(struct drm_i915_private *dev_priv,
1242                  enum pipe pipe, bool state)
1243 {
1244         bool cur_state;
1245         enum transcoder cpu_transcoder = intel_pipe_to_cpu_transcoder(dev_priv,
1246                                                                       pipe);
1247         enum intel_display_power_domain power_domain;
1248         intel_wakeref_t wakeref;
1249
1250         /* we keep both pipes enabled on 830 */
1251         if (IS_I830(dev_priv))
1252                 state = true;
1253
1254         power_domain = POWER_DOMAIN_TRANSCODER(cpu_transcoder);
1255         wakeref = intel_display_power_get_if_enabled(dev_priv, power_domain);
1256         if (wakeref) {
1257                 u32 val = I915_READ(PIPECONF(cpu_transcoder));
1258                 cur_state = !!(val & PIPECONF_ENABLE);
1259
1260                 intel_display_power_put(dev_priv, power_domain, wakeref);
1261         } else {
1262                 cur_state = false;
1263         }
1264
1265         I915_STATE_WARN(cur_state != state,
1266              "pipe %c assertion failure (expected %s, current %s)\n",
1267                         pipe_name(pipe), onoff(state), onoff(cur_state));
1268 }
1269
1270 static void assert_plane(struct intel_plane *plane, bool state)
1271 {
1272         enum pipe pipe;
1273         bool cur_state;
1274
1275         cur_state = plane->get_hw_state(plane, &pipe);
1276
1277         I915_STATE_WARN(cur_state != state,
1278                         "%s assertion failure (expected %s, current %s)\n",
1279                         plane->base.name, onoff(state), onoff(cur_state));
1280 }
1281
1282 #define assert_plane_enabled(p) assert_plane(p, true)
1283 #define assert_plane_disabled(p) assert_plane(p, false)
1284
1285 static void assert_planes_disabled(struct intel_crtc *crtc)
1286 {
1287         struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
1288         struct intel_plane *plane;
1289
1290         for_each_intel_plane_on_crtc(&dev_priv->drm, crtc, plane)
1291                 assert_plane_disabled(plane);
1292 }
1293
1294 static void assert_vblank_disabled(struct drm_crtc *crtc)
1295 {
1296         if (I915_STATE_WARN_ON(drm_crtc_vblank_get(crtc) == 0))
1297                 drm_crtc_vblank_put(crtc);
1298 }
1299
1300 void assert_pch_transcoder_disabled(struct drm_i915_private *dev_priv,
1301                                     enum pipe pipe)
1302 {
1303         u32 val;
1304         bool enabled;
1305
1306         val = I915_READ(PCH_TRANSCONF(pipe));
1307         enabled = !!(val & TRANS_ENABLE);
1308         I915_STATE_WARN(enabled,
1309              "transcoder assertion failed, should be off on pipe %c but is still active\n",
1310              pipe_name(pipe));
1311 }
1312
1313 static void assert_pch_dp_disabled(struct drm_i915_private *dev_priv,
1314                                    enum pipe pipe, enum port port,
1315                                    i915_reg_t dp_reg)
1316 {
1317         enum pipe port_pipe;
1318         bool state;
1319
1320         state = intel_dp_port_enabled(dev_priv, dp_reg, port, &port_pipe);
1321
1322         I915_STATE_WARN(state && port_pipe == pipe,
1323                         "PCH DP %c enabled on transcoder %c, should be disabled\n",
1324                         port_name(port), pipe_name(pipe));
1325
1326         I915_STATE_WARN(HAS_PCH_IBX(dev_priv) && !state && port_pipe == PIPE_B,
1327                         "IBX PCH DP %c still using transcoder B\n",
1328                         port_name(port));
1329 }
1330
1331 static void assert_pch_hdmi_disabled(struct drm_i915_private *dev_priv,
1332                                      enum pipe pipe, enum port port,
1333                                      i915_reg_t hdmi_reg)
1334 {
1335         enum pipe port_pipe;
1336         bool state;
1337
1338         state = intel_sdvo_port_enabled(dev_priv, hdmi_reg, &port_pipe);
1339
1340         I915_STATE_WARN(state && port_pipe == pipe,
1341                         "PCH HDMI %c enabled on transcoder %c, should be disabled\n",
1342                         port_name(port), pipe_name(pipe));
1343
1344         I915_STATE_WARN(HAS_PCH_IBX(dev_priv) && !state && port_pipe == PIPE_B,
1345                         "IBX PCH HDMI %c still using transcoder B\n",
1346                         port_name(port));
1347 }
1348
1349 static void assert_pch_ports_disabled(struct drm_i915_private *dev_priv,
1350                                       enum pipe pipe)
1351 {
1352         enum pipe port_pipe;
1353
1354         assert_pch_dp_disabled(dev_priv, pipe, PORT_B, PCH_DP_B);
1355         assert_pch_dp_disabled(dev_priv, pipe, PORT_C, PCH_DP_C);
1356         assert_pch_dp_disabled(dev_priv, pipe, PORT_D, PCH_DP_D);
1357
1358         I915_STATE_WARN(intel_crt_port_enabled(dev_priv, PCH_ADPA, &port_pipe) &&
1359                         port_pipe == pipe,
1360                         "PCH VGA enabled on transcoder %c, should be disabled\n",
1361                         pipe_name(pipe));
1362
1363         I915_STATE_WARN(intel_lvds_port_enabled(dev_priv, PCH_LVDS, &port_pipe) &&
1364                         port_pipe == pipe,
1365                         "PCH LVDS enabled on transcoder %c, should be disabled\n",
1366                         pipe_name(pipe));
1367
1368         /* PCH SDVOB multiplex with HDMIB */
1369         assert_pch_hdmi_disabled(dev_priv, pipe, PORT_B, PCH_HDMIB);
1370         assert_pch_hdmi_disabled(dev_priv, pipe, PORT_C, PCH_HDMIC);
1371         assert_pch_hdmi_disabled(dev_priv, pipe, PORT_D, PCH_HDMID);
1372 }
1373
1374 static void _vlv_enable_pll(struct intel_crtc *crtc,
1375                             const struct intel_crtc_state *pipe_config)
1376 {
1377         struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
1378         enum pipe pipe = crtc->pipe;
1379
1380         I915_WRITE(DPLL(pipe), pipe_config->dpll_hw_state.dpll);
1381         POSTING_READ(DPLL(pipe));
1382         udelay(150);
1383
1384         if (intel_wait_for_register(&dev_priv->uncore,
1385                                     DPLL(pipe),
1386                                     DPLL_LOCK_VLV,
1387                                     DPLL_LOCK_VLV,
1388                                     1))
1389                 DRM_ERROR("DPLL %d failed to lock\n", pipe);
1390 }
1391
1392 static void vlv_enable_pll(struct intel_crtc *crtc,
1393                            const struct intel_crtc_state *pipe_config)
1394 {
1395         struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
1396         enum pipe pipe = crtc->pipe;
1397
1398         assert_pipe_disabled(dev_priv, pipe);
1399
1400         /* PLL is protected by panel, make sure we can write it */
1401         assert_panel_unlocked(dev_priv, pipe);
1402
1403         if (pipe_config->dpll_hw_state.dpll & DPLL_VCO_ENABLE)
1404                 _vlv_enable_pll(crtc, pipe_config);
1405
1406         I915_WRITE(DPLL_MD(pipe), pipe_config->dpll_hw_state.dpll_md);
1407         POSTING_READ(DPLL_MD(pipe));
1408 }
1409
1410
1411 static void _chv_enable_pll(struct intel_crtc *crtc,
1412                             const struct intel_crtc_state *pipe_config)
1413 {
1414         struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
1415         enum pipe pipe = crtc->pipe;
1416         enum dpio_channel port = vlv_pipe_to_channel(pipe);
1417         u32 tmp;
1418
1419         vlv_dpio_get(dev_priv);
1420
1421         /* Enable back the 10bit clock to display controller */
1422         tmp = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW14(port));
1423         tmp |= DPIO_DCLKP_EN;
1424         vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW14(port), tmp);
1425
1426         vlv_dpio_put(dev_priv);
1427
1428         /*
1429          * Need to wait > 100ns between dclkp clock enable bit and PLL enable.
1430          */
1431         udelay(1);
1432
1433         /* Enable PLL */
1434         I915_WRITE(DPLL(pipe), pipe_config->dpll_hw_state.dpll);
1435
1436         /* Check PLL is locked */
1437         if (intel_wait_for_register(&dev_priv->uncore,
1438                                     DPLL(pipe), DPLL_LOCK_VLV, DPLL_LOCK_VLV,
1439                                     1))
1440                 DRM_ERROR("PLL %d failed to lock\n", pipe);
1441 }
1442
1443 static void chv_enable_pll(struct intel_crtc *crtc,
1444                            const struct intel_crtc_state *pipe_config)
1445 {
1446         struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
1447         enum pipe pipe = crtc->pipe;
1448
1449         assert_pipe_disabled(dev_priv, pipe);
1450
1451         /* PLL is protected by panel, make sure we can write it */
1452         assert_panel_unlocked(dev_priv, pipe);
1453
1454         if (pipe_config->dpll_hw_state.dpll & DPLL_VCO_ENABLE)
1455                 _chv_enable_pll(crtc, pipe_config);
1456
1457         if (pipe != PIPE_A) {
1458                 /*
1459                  * WaPixelRepeatModeFixForC0:chv
1460                  *
1461                  * DPLLCMD is AWOL. Use chicken bits to propagate
1462                  * the value from DPLLBMD to either pipe B or C.
1463                  */
1464                 I915_WRITE(CBR4_VLV, CBR_DPLLBMD_PIPE(pipe));
1465                 I915_WRITE(DPLL_MD(PIPE_B), pipe_config->dpll_hw_state.dpll_md);
1466                 I915_WRITE(CBR4_VLV, 0);
1467                 dev_priv->chv_dpll_md[pipe] = pipe_config->dpll_hw_state.dpll_md;
1468
1469                 /*
1470                  * DPLLB VGA mode also seems to cause problems.
1471                  * We should always have it disabled.
1472                  */
1473                 WARN_ON((I915_READ(DPLL(PIPE_B)) & DPLL_VGA_MODE_DIS) == 0);
1474         } else {
1475                 I915_WRITE(DPLL_MD(pipe), pipe_config->dpll_hw_state.dpll_md);
1476                 POSTING_READ(DPLL_MD(pipe));
1477         }
1478 }
1479
1480 static bool i9xx_has_pps(struct drm_i915_private *dev_priv)
1481 {
1482         if (IS_I830(dev_priv))
1483                 return false;
1484
1485         return IS_PINEVIEW(dev_priv) || IS_MOBILE(dev_priv);
1486 }
1487
1488 static void i9xx_enable_pll(struct intel_crtc *crtc,
1489                             const struct intel_crtc_state *crtc_state)
1490 {
1491         struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
1492         i915_reg_t reg = DPLL(crtc->pipe);
1493         u32 dpll = crtc_state->dpll_hw_state.dpll;
1494         int i;
1495
1496         assert_pipe_disabled(dev_priv, crtc->pipe);
1497
1498         /* PLL is protected by panel, make sure we can write it */
1499         if (i9xx_has_pps(dev_priv))
1500                 assert_panel_unlocked(dev_priv, crtc->pipe);
1501
1502         /*
1503          * Apparently we need to have VGA mode enabled prior to changing
1504          * the P1/P2 dividers. Otherwise the DPLL will keep using the old
1505          * dividers, even though the register value does change.
1506          */
1507         I915_WRITE(reg, dpll & ~DPLL_VGA_MODE_DIS);
1508         I915_WRITE(reg, dpll);
1509
1510         /* Wait for the clocks to stabilize. */
1511         POSTING_READ(reg);
1512         udelay(150);
1513
1514         if (INTEL_GEN(dev_priv) >= 4) {
1515                 I915_WRITE(DPLL_MD(crtc->pipe),
1516                            crtc_state->dpll_hw_state.dpll_md);
1517         } else {
1518                 /* The pixel multiplier can only be updated once the
1519                  * DPLL is enabled and the clocks are stable.
1520                  *
1521                  * So write it again.
1522                  */
1523                 I915_WRITE(reg, dpll);
1524         }
1525
1526         /* We do this three times for luck */
1527         for (i = 0; i < 3; i++) {
1528                 I915_WRITE(reg, dpll);
1529                 POSTING_READ(reg);
1530                 udelay(150); /* wait for warmup */
1531         }
1532 }
1533
1534 static void i9xx_disable_pll(const struct intel_crtc_state *crtc_state)
1535 {
1536         struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
1537         struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
1538         enum pipe pipe = crtc->pipe;
1539
1540         /* Don't disable pipe or pipe PLLs if needed */
1541         if (IS_I830(dev_priv))
1542                 return;
1543
1544         /* Make sure the pipe isn't still relying on us */
1545         assert_pipe_disabled(dev_priv, pipe);
1546
1547         I915_WRITE(DPLL(pipe), DPLL_VGA_MODE_DIS);
1548         POSTING_READ(DPLL(pipe));
1549 }
1550
1551 static void vlv_disable_pll(struct drm_i915_private *dev_priv, enum pipe pipe)
1552 {
1553         u32 val;
1554
1555         /* Make sure the pipe isn't still relying on us */
1556         assert_pipe_disabled(dev_priv, pipe);
1557
1558         val = DPLL_INTEGRATED_REF_CLK_VLV |
1559                 DPLL_REF_CLK_ENABLE_VLV | DPLL_VGA_MODE_DIS;
1560         if (pipe != PIPE_A)
1561                 val |= DPLL_INTEGRATED_CRI_CLK_VLV;
1562
1563         I915_WRITE(DPLL(pipe), val);
1564         POSTING_READ(DPLL(pipe));
1565 }
1566
1567 static void chv_disable_pll(struct drm_i915_private *dev_priv, enum pipe pipe)
1568 {
1569         enum dpio_channel port = vlv_pipe_to_channel(pipe);
1570         u32 val;
1571
1572         /* Make sure the pipe isn't still relying on us */
1573         assert_pipe_disabled(dev_priv, pipe);
1574
1575         val = DPLL_SSC_REF_CLK_CHV |
1576                 DPLL_REF_CLK_ENABLE_VLV | DPLL_VGA_MODE_DIS;
1577         if (pipe != PIPE_A)
1578                 val |= DPLL_INTEGRATED_CRI_CLK_VLV;
1579
1580         I915_WRITE(DPLL(pipe), val);
1581         POSTING_READ(DPLL(pipe));
1582
1583         vlv_dpio_get(dev_priv);
1584
1585         /* Disable 10bit clock to display controller */
1586         val = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW14(port));
1587         val &= ~DPIO_DCLKP_EN;
1588         vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW14(port), val);
1589
1590         vlv_dpio_put(dev_priv);
1591 }
1592
1593 void vlv_wait_port_ready(struct drm_i915_private *dev_priv,
1594                          struct intel_digital_port *dport,
1595                          unsigned int expected_mask)
1596 {
1597         u32 port_mask;
1598         i915_reg_t dpll_reg;
1599
1600         switch (dport->base.port) {
1601         case PORT_B:
1602                 port_mask = DPLL_PORTB_READY_MASK;
1603                 dpll_reg = DPLL(0);
1604                 break;
1605         case PORT_C:
1606                 port_mask = DPLL_PORTC_READY_MASK;
1607                 dpll_reg = DPLL(0);
1608                 expected_mask <<= 4;
1609                 break;
1610         case PORT_D:
1611                 port_mask = DPLL_PORTD_READY_MASK;
1612                 dpll_reg = DPIO_PHY_STATUS;
1613                 break;
1614         default:
1615                 BUG();
1616         }
1617
1618         if (intel_wait_for_register(&dev_priv->uncore,
1619                                     dpll_reg, port_mask, expected_mask,
1620                                     1000))
1621                 WARN(1, "timed out waiting for port %c ready: got 0x%x, expected 0x%x\n",
1622                      port_name(dport->base.port),
1623                      I915_READ(dpll_reg) & port_mask, expected_mask);
1624 }
1625
1626 static void ironlake_enable_pch_transcoder(const struct intel_crtc_state *crtc_state)
1627 {
1628         struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
1629         struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
1630         enum pipe pipe = crtc->pipe;
1631         i915_reg_t reg;
1632         u32 val, pipeconf_val;
1633
1634         /* Make sure PCH DPLL is enabled */
1635         assert_shared_dpll_enabled(dev_priv, crtc_state->shared_dpll);
1636
1637         /* FDI must be feeding us bits for PCH ports */
1638         assert_fdi_tx_enabled(dev_priv, pipe);
1639         assert_fdi_rx_enabled(dev_priv, pipe);
1640
1641         if (HAS_PCH_CPT(dev_priv)) {
1642                 /* Workaround: Set the timing override bit before enabling the
1643                  * pch transcoder. */
1644                 reg = TRANS_CHICKEN2(pipe);
1645                 val = I915_READ(reg);
1646                 val |= TRANS_CHICKEN2_TIMING_OVERRIDE;
1647                 I915_WRITE(reg, val);
1648         }
1649
1650         reg = PCH_TRANSCONF(pipe);
1651         val = I915_READ(reg);
1652         pipeconf_val = I915_READ(PIPECONF(pipe));
1653
1654         if (HAS_PCH_IBX(dev_priv)) {
1655                 /*
1656                  * Make the BPC in transcoder be consistent with
1657                  * that in pipeconf reg. For HDMI we must use 8bpc
1658                  * here for both 8bpc and 12bpc.
1659                  */
1660                 val &= ~PIPECONF_BPC_MASK;
1661                 if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI))
1662                         val |= PIPECONF_8BPC;
1663                 else
1664                         val |= pipeconf_val & PIPECONF_BPC_MASK;
1665         }
1666
1667         val &= ~TRANS_INTERLACE_MASK;
1668         if ((pipeconf_val & PIPECONF_INTERLACE_MASK) == PIPECONF_INTERLACED_ILK) {
1669                 if (HAS_PCH_IBX(dev_priv) &&
1670                     intel_crtc_has_type(crtc_state, INTEL_OUTPUT_SDVO))
1671                         val |= TRANS_LEGACY_INTERLACED_ILK;
1672                 else
1673                         val |= TRANS_INTERLACED;
1674         } else {
1675                 val |= TRANS_PROGRESSIVE;
1676         }
1677
1678         I915_WRITE(reg, val | TRANS_ENABLE);
1679         if (intel_wait_for_register(&dev_priv->uncore,
1680                                     reg, TRANS_STATE_ENABLE, TRANS_STATE_ENABLE,
1681                                     100))
1682                 DRM_ERROR("failed to enable transcoder %c\n", pipe_name(pipe));
1683 }
1684
1685 static void lpt_enable_pch_transcoder(struct drm_i915_private *dev_priv,
1686                                       enum transcoder cpu_transcoder)
1687 {
1688         u32 val, pipeconf_val;
1689
1690         /* FDI must be feeding us bits for PCH ports */
1691         assert_fdi_tx_enabled(dev_priv, (enum pipe) cpu_transcoder);
1692         assert_fdi_rx_enabled(dev_priv, PIPE_A);
1693
1694         /* Workaround: set timing override bit. */
1695         val = I915_READ(TRANS_CHICKEN2(PIPE_A));
1696         val |= TRANS_CHICKEN2_TIMING_OVERRIDE;
1697         I915_WRITE(TRANS_CHICKEN2(PIPE_A), val);
1698
1699         val = TRANS_ENABLE;
1700         pipeconf_val = I915_READ(PIPECONF(cpu_transcoder));
1701
1702         if ((pipeconf_val & PIPECONF_INTERLACE_MASK_HSW) ==
1703             PIPECONF_INTERLACED_ILK)
1704                 val |= TRANS_INTERLACED;
1705         else
1706                 val |= TRANS_PROGRESSIVE;
1707
1708         I915_WRITE(LPT_TRANSCONF, val);
1709         if (intel_wait_for_register(&dev_priv->uncore,
1710                                     LPT_TRANSCONF,
1711                                     TRANS_STATE_ENABLE,
1712                                     TRANS_STATE_ENABLE,
1713                                     100))
1714                 DRM_ERROR("Failed to enable PCH transcoder\n");
1715 }
1716
1717 static void ironlake_disable_pch_transcoder(struct drm_i915_private *dev_priv,
1718                                             enum pipe pipe)
1719 {
1720         i915_reg_t reg;
1721         u32 val;
1722
1723         /* FDI relies on the transcoder */
1724         assert_fdi_tx_disabled(dev_priv, pipe);
1725         assert_fdi_rx_disabled(dev_priv, pipe);
1726
1727         /* Ports must be off as well */
1728         assert_pch_ports_disabled(dev_priv, pipe);
1729
1730         reg = PCH_TRANSCONF(pipe);
1731         val = I915_READ(reg);
1732         val &= ~TRANS_ENABLE;
1733         I915_WRITE(reg, val);
1734         /* wait for PCH transcoder off, transcoder state */
1735         if (intel_wait_for_register(&dev_priv->uncore,
1736                                     reg, TRANS_STATE_ENABLE, 0,
1737                                     50))
1738                 DRM_ERROR("failed to disable transcoder %c\n", pipe_name(pipe));
1739
1740         if (HAS_PCH_CPT(dev_priv)) {
1741                 /* Workaround: Clear the timing override chicken bit again. */
1742                 reg = TRANS_CHICKEN2(pipe);
1743                 val = I915_READ(reg);
1744                 val &= ~TRANS_CHICKEN2_TIMING_OVERRIDE;
1745                 I915_WRITE(reg, val);
1746         }
1747 }
1748
1749 void lpt_disable_pch_transcoder(struct drm_i915_private *dev_priv)
1750 {
1751         u32 val;
1752
1753         val = I915_READ(LPT_TRANSCONF);
1754         val &= ~TRANS_ENABLE;
1755         I915_WRITE(LPT_TRANSCONF, val);
1756         /* wait for PCH transcoder off, transcoder state */
1757         if (intel_wait_for_register(&dev_priv->uncore,
1758                                     LPT_TRANSCONF, TRANS_STATE_ENABLE, 0,
1759                                     50))
1760                 DRM_ERROR("Failed to disable PCH transcoder\n");
1761
1762         /* Workaround: clear timing override bit. */
1763         val = I915_READ(TRANS_CHICKEN2(PIPE_A));
1764         val &= ~TRANS_CHICKEN2_TIMING_OVERRIDE;
1765         I915_WRITE(TRANS_CHICKEN2(PIPE_A), val);
1766 }
1767
1768 enum pipe intel_crtc_pch_transcoder(struct intel_crtc *crtc)
1769 {
1770         struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
1771
1772         if (HAS_PCH_LPT(dev_priv))
1773                 return PIPE_A;
1774         else
1775                 return crtc->pipe;
1776 }
1777
1778 static u32 intel_crtc_max_vblank_count(const struct intel_crtc_state *crtc_state)
1779 {
1780         struct drm_i915_private *dev_priv = to_i915(crtc_state->base.crtc->dev);
1781
1782         /*
1783          * On i965gm the hardware frame counter reads
1784          * zero when the TV encoder is enabled :(
1785          */
1786         if (IS_I965GM(dev_priv) &&
1787             (crtc_state->output_types & BIT(INTEL_OUTPUT_TVOUT)))
1788                 return 0;
1789
1790         if (INTEL_GEN(dev_priv) >= 5 || IS_G4X(dev_priv))
1791                 return 0xffffffff; /* full 32 bit counter */
1792         else if (INTEL_GEN(dev_priv) >= 3)
1793                 return 0xffffff; /* only 24 bits of frame count */
1794         else
1795                 return 0; /* Gen2 doesn't have a hardware frame counter */
1796 }
1797
1798 static void intel_crtc_vblank_on(const struct intel_crtc_state *crtc_state)
1799 {
1800         struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
1801
1802         drm_crtc_set_max_vblank_count(&crtc->base,
1803                                       intel_crtc_max_vblank_count(crtc_state));
1804         drm_crtc_vblank_on(&crtc->base);
1805 }
1806
1807 static void intel_enable_pipe(const struct intel_crtc_state *new_crtc_state)
1808 {
1809         struct intel_crtc *crtc = to_intel_crtc(new_crtc_state->base.crtc);
1810         struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
1811         enum transcoder cpu_transcoder = new_crtc_state->cpu_transcoder;
1812         enum pipe pipe = crtc->pipe;
1813         i915_reg_t reg;
1814         u32 val;
1815
1816         DRM_DEBUG_KMS("enabling pipe %c\n", pipe_name(pipe));
1817
1818         assert_planes_disabled(crtc);
1819
1820         /*
1821          * A pipe without a PLL won't actually be able to drive bits from
1822          * a plane.  On ILK+ the pipe PLLs are integrated, so we don't
1823          * need the check.
1824          */
1825         if (HAS_GMCH(dev_priv)) {
1826                 if (intel_crtc_has_type(new_crtc_state, INTEL_OUTPUT_DSI))
1827                         assert_dsi_pll_enabled(dev_priv);
1828                 else
1829                         assert_pll_enabled(dev_priv, pipe);
1830         } else {
1831                 if (new_crtc_state->has_pch_encoder) {
1832                         /* if driving the PCH, we need FDI enabled */
1833                         assert_fdi_rx_pll_enabled(dev_priv,
1834                                                   intel_crtc_pch_transcoder(crtc));
1835                         assert_fdi_tx_pll_enabled(dev_priv,
1836                                                   (enum pipe) cpu_transcoder);
1837                 }
1838                 /* FIXME: assert CPU port conditions for SNB+ */
1839         }
1840
1841         trace_intel_pipe_enable(dev_priv, pipe);
1842
1843         reg = PIPECONF(cpu_transcoder);
1844         val = I915_READ(reg);
1845         if (val & PIPECONF_ENABLE) {
1846                 /* we keep both pipes enabled on 830 */
1847                 WARN_ON(!IS_I830(dev_priv));
1848                 return;
1849         }
1850
1851         I915_WRITE(reg, val | PIPECONF_ENABLE);
1852         POSTING_READ(reg);
1853
1854         /*
1855          * Until the pipe starts PIPEDSL reads will return a stale value,
1856          * which causes an apparent vblank timestamp jump when PIPEDSL
1857          * resets to its proper value. That also messes up the frame count
1858          * when it's derived from the timestamps. So let's wait for the
1859          * pipe to start properly before we call drm_crtc_vblank_on()
1860          */
1861         if (intel_crtc_max_vblank_count(new_crtc_state) == 0)
1862                 intel_wait_for_pipe_scanline_moving(crtc);
1863 }
1864
1865 static void intel_disable_pipe(const struct intel_crtc_state *old_crtc_state)
1866 {
1867         struct intel_crtc *crtc = to_intel_crtc(old_crtc_state->base.crtc);
1868         struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
1869         enum transcoder cpu_transcoder = old_crtc_state->cpu_transcoder;
1870         enum pipe pipe = crtc->pipe;
1871         i915_reg_t reg;
1872         u32 val;
1873
1874         DRM_DEBUG_KMS("disabling pipe %c\n", pipe_name(pipe));
1875
1876         /*
1877          * Make sure planes won't keep trying to pump pixels to us,
1878          * or we might hang the display.
1879          */
1880         assert_planes_disabled(crtc);
1881
1882         trace_intel_pipe_disable(dev_priv, pipe);
1883
1884         reg = PIPECONF(cpu_transcoder);
1885         val = I915_READ(reg);
1886         if ((val & PIPECONF_ENABLE) == 0)
1887                 return;
1888
1889         /*
1890          * Double wide has implications for planes
1891          * so best keep it disabled when not needed.
1892          */
1893         if (old_crtc_state->double_wide)
1894                 val &= ~PIPECONF_DOUBLE_WIDE;
1895
1896         /* Don't disable pipe or pipe PLLs if needed */
1897         if (!IS_I830(dev_priv))
1898                 val &= ~PIPECONF_ENABLE;
1899
1900         I915_WRITE(reg, val);
1901         if ((val & PIPECONF_ENABLE) == 0)
1902                 intel_wait_for_pipe_off(old_crtc_state);
1903 }
1904
1905 static unsigned int intel_tile_size(const struct drm_i915_private *dev_priv)
1906 {
1907         return IS_GEN(dev_priv, 2) ? 2048 : 4096;
1908 }
1909
1910 static unsigned int
1911 intel_tile_width_bytes(const struct drm_framebuffer *fb, int color_plane)
1912 {
1913         struct drm_i915_private *dev_priv = to_i915(fb->dev);
1914         unsigned int cpp = fb->format->cpp[color_plane];
1915
1916         switch (fb->modifier) {
1917         case DRM_FORMAT_MOD_LINEAR:
1918                 return cpp;
1919         case I915_FORMAT_MOD_X_TILED:
1920                 if (IS_GEN(dev_priv, 2))
1921                         return 128;
1922                 else
1923                         return 512;
1924         case I915_FORMAT_MOD_Y_TILED_CCS:
1925                 if (color_plane == 1)
1926                         return 128;
1927                 /* fall through */
1928         case I915_FORMAT_MOD_Y_TILED:
1929                 if (IS_GEN(dev_priv, 2) || HAS_128_BYTE_Y_TILING(dev_priv))
1930                         return 128;
1931                 else
1932                         return 512;
1933         case I915_FORMAT_MOD_Yf_TILED_CCS:
1934                 if (color_plane == 1)
1935                         return 128;
1936                 /* fall through */
1937         case I915_FORMAT_MOD_Yf_TILED:
1938                 switch (cpp) {
1939                 case 1:
1940                         return 64;
1941                 case 2:
1942                 case 4:
1943                         return 128;
1944                 case 8:
1945                 case 16:
1946                         return 256;
1947                 default:
1948                         MISSING_CASE(cpp);
1949                         return cpp;
1950                 }
1951                 break;
1952         default:
1953                 MISSING_CASE(fb->modifier);
1954                 return cpp;
1955         }
1956 }
1957
1958 static unsigned int
1959 intel_tile_height(const struct drm_framebuffer *fb, int color_plane)
1960 {
1961         if (fb->modifier == DRM_FORMAT_MOD_LINEAR)
1962                 return 1;
1963         else
1964                 return intel_tile_size(to_i915(fb->dev)) /
1965                         intel_tile_width_bytes(fb, color_plane);
1966 }
1967
1968 /* Return the tile dimensions in pixel units */
1969 static void intel_tile_dims(const struct drm_framebuffer *fb, int color_plane,
1970                             unsigned int *tile_width,
1971                             unsigned int *tile_height)
1972 {
1973         unsigned int tile_width_bytes = intel_tile_width_bytes(fb, color_plane);
1974         unsigned int cpp = fb->format->cpp[color_plane];
1975
1976         *tile_width = tile_width_bytes / cpp;
1977         *tile_height = intel_tile_size(to_i915(fb->dev)) / tile_width_bytes;
1978 }
1979
1980 unsigned int
1981 intel_fb_align_height(const struct drm_framebuffer *fb,
1982                       int color_plane, unsigned int height)
1983 {
1984         unsigned int tile_height = intel_tile_height(fb, color_plane);
1985
1986         return ALIGN(height, tile_height);
1987 }
1988
1989 unsigned int intel_rotation_info_size(const struct intel_rotation_info *rot_info)
1990 {
1991         unsigned int size = 0;
1992         int i;
1993
1994         for (i = 0 ; i < ARRAY_SIZE(rot_info->plane); i++)
1995                 size += rot_info->plane[i].width * rot_info->plane[i].height;
1996
1997         return size;
1998 }
1999
2000 static void
2001 intel_fill_fb_ggtt_view(struct i915_ggtt_view *view,
2002                         const struct drm_framebuffer *fb,
2003                         unsigned int rotation)
2004 {
2005         view->type = I915_GGTT_VIEW_NORMAL;
2006         if (drm_rotation_90_or_270(rotation)) {
2007                 view->type = I915_GGTT_VIEW_ROTATED;
2008                 view->rotated = to_intel_framebuffer(fb)->rot_info;
2009         }
2010 }
2011
2012 static unsigned int intel_cursor_alignment(const struct drm_i915_private *dev_priv)
2013 {
2014         if (IS_I830(dev_priv))
2015                 return 16 * 1024;
2016         else if (IS_I85X(dev_priv))
2017                 return 256;
2018         else if (IS_I845G(dev_priv) || IS_I865G(dev_priv))
2019                 return 32;
2020         else
2021                 return 4 * 1024;
2022 }
2023
2024 static unsigned int intel_linear_alignment(const struct drm_i915_private *dev_priv)
2025 {
2026         if (INTEL_GEN(dev_priv) >= 9)
2027                 return 256 * 1024;
2028         else if (IS_I965G(dev_priv) || IS_I965GM(dev_priv) ||
2029                  IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
2030                 return 128 * 1024;
2031         else if (INTEL_GEN(dev_priv) >= 4)
2032                 return 4 * 1024;
2033         else
2034                 return 0;
2035 }
2036
2037 static unsigned int intel_surf_alignment(const struct drm_framebuffer *fb,
2038                                          int color_plane)
2039 {
2040         struct drm_i915_private *dev_priv = to_i915(fb->dev);
2041
2042         /* AUX_DIST needs only 4K alignment */
2043         if (color_plane == 1)
2044                 return 4096;
2045
2046         switch (fb->modifier) {
2047         case DRM_FORMAT_MOD_LINEAR:
2048                 return intel_linear_alignment(dev_priv);
2049         case I915_FORMAT_MOD_X_TILED:
2050                 if (INTEL_GEN(dev_priv) >= 9)
2051                         return 256 * 1024;
2052                 return 0;
2053         case I915_FORMAT_MOD_Y_TILED_CCS:
2054         case I915_FORMAT_MOD_Yf_TILED_CCS:
2055         case I915_FORMAT_MOD_Y_TILED:
2056         case I915_FORMAT_MOD_Yf_TILED:
2057                 return 1 * 1024 * 1024;
2058         default:
2059                 MISSING_CASE(fb->modifier);
2060                 return 0;
2061         }
2062 }
2063
2064 static bool intel_plane_uses_fence(const struct intel_plane_state *plane_state)
2065 {
2066         struct intel_plane *plane = to_intel_plane(plane_state->base.plane);
2067         struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
2068
2069         return INTEL_GEN(dev_priv) < 4 || plane->has_fbc;
2070 }
2071
2072 struct i915_vma *
2073 intel_pin_and_fence_fb_obj(struct drm_framebuffer *fb,
2074                            const struct i915_ggtt_view *view,
2075                            bool uses_fence,
2076                            unsigned long *out_flags)
2077 {
2078         struct drm_device *dev = fb->dev;
2079         struct drm_i915_private *dev_priv = to_i915(dev);
2080         struct drm_i915_gem_object *obj = intel_fb_obj(fb);
2081         intel_wakeref_t wakeref;
2082         struct i915_vma *vma;
2083         unsigned int pinctl;
2084         u32 alignment;
2085
2086         WARN_ON(!mutex_is_locked(&dev->struct_mutex));
2087
2088         alignment = intel_surf_alignment(fb, 0);
2089
2090         /* Note that the w/a also requires 64 PTE of padding following the
2091          * bo. We currently fill all unused PTE with the shadow page and so
2092          * we should always have valid PTE following the scanout preventing
2093          * the VT-d warning.
2094          */
2095         if (intel_scanout_needs_vtd_wa(dev_priv) && alignment < 256 * 1024)
2096                 alignment = 256 * 1024;
2097
2098         /*
2099          * Global gtt pte registers are special registers which actually forward
2100          * writes to a chunk of system memory. Which means that there is no risk
2101          * that the register values disappear as soon as we call
2102          * intel_runtime_pm_put(), so it is correct to wrap only the
2103          * pin/unpin/fence and not more.
2104          */
2105         wakeref = intel_runtime_pm_get(dev_priv);
2106
2107         atomic_inc(&dev_priv->gpu_error.pending_fb_pin);
2108
2109         pinctl = 0;
2110
2111         /* Valleyview is definitely limited to scanning out the first
2112          * 512MiB. Lets presume this behaviour was inherited from the
2113          * g4x display engine and that all earlier gen are similarly
2114          * limited. Testing suggests that it is a little more
2115          * complicated than this. For example, Cherryview appears quite
2116          * happy to scanout from anywhere within its global aperture.
2117          */
2118         if (HAS_GMCH(dev_priv))
2119                 pinctl |= PIN_MAPPABLE;
2120
2121         vma = i915_gem_object_pin_to_display_plane(obj,
2122                                                    alignment, view, pinctl);
2123         if (IS_ERR(vma))
2124                 goto err;
2125
2126         if (uses_fence && i915_vma_is_map_and_fenceable(vma)) {
2127                 int ret;
2128
2129                 /* Install a fence for tiled scan-out. Pre-i965 always needs a
2130                  * fence, whereas 965+ only requires a fence if using
2131                  * framebuffer compression.  For simplicity, we always, when
2132                  * possible, install a fence as the cost is not that onerous.
2133                  *
2134                  * If we fail to fence the tiled scanout, then either the
2135                  * modeset will reject the change (which is highly unlikely as
2136                  * the affected systems, all but one, do not have unmappable
2137                  * space) or we will not be able to enable full powersaving
2138                  * techniques (also likely not to apply due to various limits
2139                  * FBC and the like impose on the size of the buffer, which
2140                  * presumably we violated anyway with this unmappable buffer).
2141                  * Anyway, it is presumably better to stumble onwards with
2142                  * something and try to run the system in a "less than optimal"
2143                  * mode that matches the user configuration.
2144                  */
2145                 ret = i915_vma_pin_fence(vma);
2146                 if (ret != 0 && INTEL_GEN(dev_priv) < 4) {
2147                         i915_gem_object_unpin_from_display_plane(vma);
2148                         vma = ERR_PTR(ret);
2149                         goto err;
2150                 }
2151
2152                 if (ret == 0 && vma->fence)
2153                         *out_flags |= PLANE_HAS_FENCE;
2154         }
2155
2156         i915_vma_get(vma);
2157 err:
2158         atomic_dec(&dev_priv->gpu_error.pending_fb_pin);
2159
2160         intel_runtime_pm_put(dev_priv, wakeref);
2161         return vma;
2162 }
2163
2164 void intel_unpin_fb_vma(struct i915_vma *vma, unsigned long flags)
2165 {
2166         lockdep_assert_held(&vma->vm->i915->drm.struct_mutex);
2167
2168         if (flags & PLANE_HAS_FENCE)
2169                 i915_vma_unpin_fence(vma);
2170         i915_gem_object_unpin_from_display_plane(vma);
2171         i915_vma_put(vma);
2172 }
2173
2174 static int intel_fb_pitch(const struct drm_framebuffer *fb, int color_plane,
2175                           unsigned int rotation)
2176 {
2177         if (drm_rotation_90_or_270(rotation))
2178                 return to_intel_framebuffer(fb)->rotated[color_plane].pitch;
2179         else
2180                 return fb->pitches[color_plane];
2181 }
2182
2183 /*
2184  * Convert the x/y offsets into a linear offset.
2185  * Only valid with 0/180 degree rotation, which is fine since linear
2186  * offset is only used with linear buffers on pre-hsw and tiled buffers
2187  * with gen2/3, and 90/270 degree rotations isn't supported on any of them.
2188  */
2189 u32 intel_fb_xy_to_linear(int x, int y,
2190                           const struct intel_plane_state *state,
2191                           int color_plane)
2192 {
2193         const struct drm_framebuffer *fb = state->base.fb;
2194         unsigned int cpp = fb->format->cpp[color_plane];
2195         unsigned int pitch = state->color_plane[color_plane].stride;
2196
2197         return y * pitch + x * cpp;
2198 }
2199
2200 /*
2201  * Add the x/y offsets derived from fb->offsets[] to the user
2202  * specified plane src x/y offsets. The resulting x/y offsets
2203  * specify the start of scanout from the beginning of the gtt mapping.
2204  */
2205 void intel_add_fb_offsets(int *x, int *y,
2206                           const struct intel_plane_state *state,
2207                           int color_plane)
2208
2209 {
2210         const struct intel_framebuffer *intel_fb = to_intel_framebuffer(state->base.fb);
2211         unsigned int rotation = state->base.rotation;
2212
2213         if (drm_rotation_90_or_270(rotation)) {
2214                 *x += intel_fb->rotated[color_plane].x;
2215                 *y += intel_fb->rotated[color_plane].y;
2216         } else {
2217                 *x += intel_fb->normal[color_plane].x;
2218                 *y += intel_fb->normal[color_plane].y;
2219         }
2220 }
2221
2222 static u32 intel_adjust_tile_offset(int *x, int *y,
2223                                     unsigned int tile_width,
2224                                     unsigned int tile_height,
2225                                     unsigned int tile_size,
2226                                     unsigned int pitch_tiles,
2227                                     u32 old_offset,
2228                                     u32 new_offset)
2229 {
2230         unsigned int pitch_pixels = pitch_tiles * tile_width;
2231         unsigned int tiles;
2232
2233         WARN_ON(old_offset & (tile_size - 1));
2234         WARN_ON(new_offset & (tile_size - 1));
2235         WARN_ON(new_offset > old_offset);
2236
2237         tiles = (old_offset - new_offset) / tile_size;
2238
2239         *y += tiles / pitch_tiles * tile_height;
2240         *x += tiles % pitch_tiles * tile_width;
2241
2242         /* minimize x in case it got needlessly big */
2243         *y += *x / pitch_pixels * tile_height;
2244         *x %= pitch_pixels;
2245
2246         return new_offset;
2247 }
2248
2249 static bool is_surface_linear(u64 modifier, int color_plane)
2250 {
2251         return modifier == DRM_FORMAT_MOD_LINEAR;
2252 }
2253
2254 static u32 intel_adjust_aligned_offset(int *x, int *y,
2255                                        const struct drm_framebuffer *fb,
2256                                        int color_plane,
2257                                        unsigned int rotation,
2258                                        unsigned int pitch,
2259                                        u32 old_offset, u32 new_offset)
2260 {
2261         struct drm_i915_private *dev_priv = to_i915(fb->dev);
2262         unsigned int cpp = fb->format->cpp[color_plane];
2263
2264         WARN_ON(new_offset > old_offset);
2265
2266         if (!is_surface_linear(fb->modifier, color_plane)) {
2267                 unsigned int tile_size, tile_width, tile_height;
2268                 unsigned int pitch_tiles;
2269
2270                 tile_size = intel_tile_size(dev_priv);
2271                 intel_tile_dims(fb, color_plane, &tile_width, &tile_height);
2272
2273                 if (drm_rotation_90_or_270(rotation)) {
2274                         pitch_tiles = pitch / tile_height;
2275                         swap(tile_width, tile_height);
2276                 } else {
2277                         pitch_tiles = pitch / (tile_width * cpp);
2278                 }
2279
2280                 intel_adjust_tile_offset(x, y, tile_width, tile_height,
2281                                          tile_size, pitch_tiles,
2282                                          old_offset, new_offset);
2283         } else {
2284                 old_offset += *y * pitch + *x * cpp;
2285
2286                 *y = (old_offset - new_offset) / pitch;
2287                 *x = ((old_offset - new_offset) - *y * pitch) / cpp;
2288         }
2289
2290         return new_offset;
2291 }
2292
2293 /*
2294  * Adjust the tile offset by moving the difference into
2295  * the x/y offsets.
2296  */
2297 static u32 intel_plane_adjust_aligned_offset(int *x, int *y,
2298                                              const struct intel_plane_state *state,
2299                                              int color_plane,
2300                                              u32 old_offset, u32 new_offset)
2301 {
2302         return intel_adjust_aligned_offset(x, y, state->base.fb, color_plane,
2303                                            state->base.rotation,
2304                                            state->color_plane[color_plane].stride,
2305                                            old_offset, new_offset);
2306 }
2307
2308 /*
2309  * Computes the aligned offset to the base tile and adjusts
2310  * x, y. bytes per pixel is assumed to be a power-of-two.
2311  *
2312  * In the 90/270 rotated case, x and y are assumed
2313  * to be already rotated to match the rotated GTT view, and
2314  * pitch is the tile_height aligned framebuffer height.
2315  *
2316  * This function is used when computing the derived information
2317  * under intel_framebuffer, so using any of that information
2318  * here is not allowed. Anything under drm_framebuffer can be
2319  * used. This is why the user has to pass in the pitch since it
2320  * is specified in the rotated orientation.
2321  */
2322 static u32 intel_compute_aligned_offset(struct drm_i915_private *dev_priv,
2323                                         int *x, int *y,
2324                                         const struct drm_framebuffer *fb,
2325                                         int color_plane,
2326                                         unsigned int pitch,
2327                                         unsigned int rotation,
2328                                         u32 alignment)
2329 {
2330         unsigned int cpp = fb->format->cpp[color_plane];
2331         u32 offset, offset_aligned;
2332
2333         if (alignment)
2334                 alignment--;
2335
2336         if (!is_surface_linear(fb->modifier, color_plane)) {
2337                 unsigned int tile_size, tile_width, tile_height;
2338                 unsigned int tile_rows, tiles, pitch_tiles;
2339
2340                 tile_size = intel_tile_size(dev_priv);
2341                 intel_tile_dims(fb, color_plane, &tile_width, &tile_height);
2342
2343                 if (drm_rotation_90_or_270(rotation)) {
2344                         pitch_tiles = pitch / tile_height;
2345                         swap(tile_width, tile_height);
2346                 } else {
2347                         pitch_tiles = pitch / (tile_width * cpp);
2348                 }
2349
2350                 tile_rows = *y / tile_height;
2351                 *y %= tile_height;
2352
2353                 tiles = *x / tile_width;
2354                 *x %= tile_width;
2355
2356                 offset = (tile_rows * pitch_tiles + tiles) * tile_size;
2357                 offset_aligned = offset & ~alignment;
2358
2359                 intel_adjust_tile_offset(x, y, tile_width, tile_height,
2360                                          tile_size, pitch_tiles,
2361                                          offset, offset_aligned);
2362         } else {
2363                 offset = *y * pitch + *x * cpp;
2364                 offset_aligned = offset & ~alignment;
2365
2366                 *y = (offset & alignment) / pitch;
2367                 *x = ((offset & alignment) - *y * pitch) / cpp;
2368         }
2369
2370         return offset_aligned;
2371 }
2372
2373 static u32 intel_plane_compute_aligned_offset(int *x, int *y,
2374                                               const struct intel_plane_state *state,
2375                                               int color_plane)
2376 {
2377         struct intel_plane *intel_plane = to_intel_plane(state->base.plane);
2378         struct drm_i915_private *dev_priv = to_i915(intel_plane->base.dev);
2379         const struct drm_framebuffer *fb = state->base.fb;
2380         unsigned int rotation = state->base.rotation;
2381         int pitch = state->color_plane[color_plane].stride;
2382         u32 alignment;
2383
2384         if (intel_plane->id == PLANE_CURSOR)
2385                 alignment = intel_cursor_alignment(dev_priv);
2386         else
2387                 alignment = intel_surf_alignment(fb, color_plane);
2388
2389         return intel_compute_aligned_offset(dev_priv, x, y, fb, color_plane,
2390                                             pitch, rotation, alignment);
2391 }
2392
2393 /* Convert the fb->offset[] into x/y offsets */
2394 static int intel_fb_offset_to_xy(int *x, int *y,
2395                                  const struct drm_framebuffer *fb,
2396                                  int color_plane)
2397 {
2398         struct drm_i915_private *dev_priv = to_i915(fb->dev);
2399         unsigned int height;
2400
2401         if (fb->modifier != DRM_FORMAT_MOD_LINEAR &&
2402             fb->offsets[color_plane] % intel_tile_size(dev_priv)) {
2403                 DRM_DEBUG_KMS("Misaligned offset 0x%08x for color plane %d\n",
2404                               fb->offsets[color_plane], color_plane);
2405                 return -EINVAL;
2406         }
2407
2408         height = drm_framebuffer_plane_height(fb->height, fb, color_plane);
2409         height = ALIGN(height, intel_tile_height(fb, color_plane));
2410
2411         /* Catch potential overflows early */
2412         if (add_overflows_t(u32, mul_u32_u32(height, fb->pitches[color_plane]),
2413                             fb->offsets[color_plane])) {
2414                 DRM_DEBUG_KMS("Bad offset 0x%08x or pitch %d for color plane %d\n",
2415                               fb->offsets[color_plane], fb->pitches[color_plane],
2416                               color_plane);
2417                 return -ERANGE;
2418         }
2419
2420         *x = 0;
2421         *y = 0;
2422
2423         intel_adjust_aligned_offset(x, y,
2424                                     fb, color_plane, DRM_MODE_ROTATE_0,
2425                                     fb->pitches[color_plane],
2426                                     fb->offsets[color_plane], 0);
2427
2428         return 0;
2429 }
2430
2431 static unsigned int intel_fb_modifier_to_tiling(u64 fb_modifier)
2432 {
2433         switch (fb_modifier) {
2434         case I915_FORMAT_MOD_X_TILED:
2435                 return I915_TILING_X;
2436         case I915_FORMAT_MOD_Y_TILED:
2437         case I915_FORMAT_MOD_Y_TILED_CCS:
2438                 return I915_TILING_Y;
2439         default:
2440                 return I915_TILING_NONE;
2441         }
2442 }
2443
2444 /*
2445  * From the Sky Lake PRM:
2446  * "The Color Control Surface (CCS) contains the compression status of
2447  *  the cache-line pairs. The compression state of the cache-line pair
2448  *  is specified by 2 bits in the CCS. Each CCS cache-line represents
2449  *  an area on the main surface of 16 x16 sets of 128 byte Y-tiled
2450  *  cache-line-pairs. CCS is always Y tiled."
2451  *
2452  * Since cache line pairs refers to horizontally adjacent cache lines,
2453  * each cache line in the CCS corresponds to an area of 32x16 cache
2454  * lines on the main surface. Since each pixel is 4 bytes, this gives
2455  * us a ratio of one byte in the CCS for each 8x16 pixels in the
2456  * main surface.
2457  */
2458 static const struct drm_format_info ccs_formats[] = {
2459         { .format = DRM_FORMAT_XRGB8888, .depth = 24, .num_planes = 2, .cpp = { 4, 1, }, .hsub = 8, .vsub = 16, },
2460         { .format = DRM_FORMAT_XBGR8888, .depth = 24, .num_planes = 2, .cpp = { 4, 1, }, .hsub = 8, .vsub = 16, },
2461         { .format = DRM_FORMAT_ARGB8888, .depth = 32, .num_planes = 2, .cpp = { 4, 1, }, .hsub = 8, .vsub = 16, },
2462         { .format = DRM_FORMAT_ABGR8888, .depth = 32, .num_planes = 2, .cpp = { 4, 1, }, .hsub = 8, .vsub = 16, },
2463 };
2464
2465 static const struct drm_format_info *
2466 lookup_format_info(const struct drm_format_info formats[],
2467                    int num_formats, u32 format)
2468 {
2469         int i;
2470
2471         for (i = 0; i < num_formats; i++) {
2472                 if (formats[i].format == format)
2473                         return &formats[i];
2474         }
2475
2476         return NULL;
2477 }
2478
2479 static const struct drm_format_info *
2480 intel_get_format_info(const struct drm_mode_fb_cmd2 *cmd)
2481 {
2482         switch (cmd->modifier[0]) {
2483         case I915_FORMAT_MOD_Y_TILED_CCS:
2484         case I915_FORMAT_MOD_Yf_TILED_CCS:
2485                 return lookup_format_info(ccs_formats,
2486                                           ARRAY_SIZE(ccs_formats),
2487                                           cmd->pixel_format);
2488         default:
2489                 return NULL;
2490         }
2491 }
2492
2493 bool is_ccs_modifier(u64 modifier)
2494 {
2495         return modifier == I915_FORMAT_MOD_Y_TILED_CCS ||
2496                modifier == I915_FORMAT_MOD_Yf_TILED_CCS;
2497 }
2498
2499 static int
2500 intel_fill_fb_info(struct drm_i915_private *dev_priv,
2501                    struct drm_framebuffer *fb)
2502 {
2503         struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
2504         struct intel_rotation_info *rot_info = &intel_fb->rot_info;
2505         struct drm_i915_gem_object *obj = intel_fb_obj(fb);
2506         u32 gtt_offset_rotated = 0;
2507         unsigned int max_size = 0;
2508         int i, num_planes = fb->format->num_planes;
2509         unsigned int tile_size = intel_tile_size(dev_priv);
2510
2511         for (i = 0; i < num_planes; i++) {
2512                 unsigned int width, height;
2513                 unsigned int cpp, size;
2514                 u32 offset;
2515                 int x, y;
2516                 int ret;
2517
2518                 cpp = fb->format->cpp[i];
2519                 width = drm_framebuffer_plane_width(fb->width, fb, i);
2520                 height = drm_framebuffer_plane_height(fb->height, fb, i);
2521
2522                 ret = intel_fb_offset_to_xy(&x, &y, fb, i);
2523                 if (ret) {
2524                         DRM_DEBUG_KMS("bad fb plane %d offset: 0x%x\n",
2525                                       i, fb->offsets[i]);
2526                         return ret;
2527                 }
2528
2529                 if (is_ccs_modifier(fb->modifier) && i == 1) {
2530                         int hsub = fb->format->hsub;
2531                         int vsub = fb->format->vsub;
2532                         int tile_width, tile_height;
2533                         int main_x, main_y;
2534                         int ccs_x, ccs_y;
2535
2536                         intel_tile_dims(fb, i, &tile_width, &tile_height);
2537                         tile_width *= hsub;
2538                         tile_height *= vsub;
2539
2540                         ccs_x = (x * hsub) % tile_width;
2541                         ccs_y = (y * vsub) % tile_height;
2542                         main_x = intel_fb->normal[0].x % tile_width;
2543                         main_y = intel_fb->normal[0].y % tile_height;
2544
2545                         /*
2546                          * CCS doesn't have its own x/y offset register, so the intra CCS tile
2547                          * x/y offsets must match between CCS and the main surface.
2548                          */
2549                         if (main_x != ccs_x || main_y != ccs_y) {
2550                                 DRM_DEBUG_KMS("Bad CCS x/y (main %d,%d ccs %d,%d) full (main %d,%d ccs %d,%d)\n",
2551                                               main_x, main_y,
2552                                               ccs_x, ccs_y,
2553                                               intel_fb->normal[0].x,
2554                                               intel_fb->normal[0].y,
2555                                               x, y);
2556                                 return -EINVAL;
2557                         }
2558                 }
2559
2560                 /*
2561                  * The fence (if used) is aligned to the start of the object
2562                  * so having the framebuffer wrap around across the edge of the
2563                  * fenced region doesn't really work. We have no API to configure
2564                  * the fence start offset within the object (nor could we probably
2565                  * on gen2/3). So it's just easier if we just require that the
2566                  * fb layout agrees with the fence layout. We already check that the
2567                  * fb stride matches the fence stride elsewhere.
2568                  */
2569                 if (i == 0 && i915_gem_object_is_tiled(obj) &&
2570                     (x + width) * cpp > fb->pitches[i]) {
2571                         DRM_DEBUG_KMS("bad fb plane %d offset: 0x%x\n",
2572                                       i, fb->offsets[i]);
2573                         return -EINVAL;
2574                 }
2575
2576                 /*
2577                  * First pixel of the framebuffer from
2578                  * the start of the normal gtt mapping.
2579                  */
2580                 intel_fb->normal[i].x = x;
2581                 intel_fb->normal[i].y = y;
2582
2583                 offset = intel_compute_aligned_offset(dev_priv, &x, &y, fb, i,
2584                                                       fb->pitches[i],
2585                                                       DRM_MODE_ROTATE_0,
2586                                                       tile_size);
2587                 offset /= tile_size;
2588
2589                 if (!is_surface_linear(fb->modifier, i)) {
2590                         unsigned int tile_width, tile_height;
2591                         unsigned int pitch_tiles;
2592                         struct drm_rect r;
2593
2594                         intel_tile_dims(fb, i, &tile_width, &tile_height);
2595
2596                         rot_info->plane[i].offset = offset;
2597                         rot_info->plane[i].stride = DIV_ROUND_UP(fb->pitches[i], tile_width * cpp);
2598                         rot_info->plane[i].width = DIV_ROUND_UP(x + width, tile_width);
2599                         rot_info->plane[i].height = DIV_ROUND_UP(y + height, tile_height);
2600
2601                         intel_fb->rotated[i].pitch =
2602                                 rot_info->plane[i].height * tile_height;
2603
2604                         /* how many tiles does this plane need */
2605                         size = rot_info->plane[i].stride * rot_info->plane[i].height;
2606                         /*
2607                          * If the plane isn't horizontally tile aligned,
2608                          * we need one more tile.
2609                          */
2610                         if (x != 0)
2611                                 size++;
2612
2613                         /* rotate the x/y offsets to match the GTT view */
2614                         r.x1 = x;
2615                         r.y1 = y;
2616                         r.x2 = x + width;
2617                         r.y2 = y + height;
2618                         drm_rect_rotate(&r,
2619                                         rot_info->plane[i].width * tile_width,
2620                                         rot_info->plane[i].height * tile_height,
2621                                         DRM_MODE_ROTATE_270);
2622                         x = r.x1;
2623                         y = r.y1;
2624
2625                         /* rotate the tile dimensions to match the GTT view */
2626                         pitch_tiles = intel_fb->rotated[i].pitch / tile_height;
2627                         swap(tile_width, tile_height);
2628
2629                         /*
2630                          * We only keep the x/y offsets, so push all of the
2631                          * gtt offset into the x/y offsets.
2632                          */
2633                         intel_adjust_tile_offset(&x, &y,
2634                                                  tile_width, tile_height,
2635                                                  tile_size, pitch_tiles,
2636                                                  gtt_offset_rotated * tile_size, 0);
2637
2638                         gtt_offset_rotated += rot_info->plane[i].width * rot_info->plane[i].height;
2639
2640                         /*
2641                          * First pixel of the framebuffer from
2642                          * the start of the rotated gtt mapping.
2643                          */
2644                         intel_fb->rotated[i].x = x;
2645                         intel_fb->rotated[i].y = y;
2646                 } else {
2647                         size = DIV_ROUND_UP((y + height) * fb->pitches[i] +
2648                                             x * cpp, tile_size);
2649                 }
2650
2651                 /* how many tiles in total needed in the bo */
2652                 max_size = max(max_size, offset + size);
2653         }
2654
2655         if (mul_u32_u32(max_size, tile_size) > obj->base.size) {
2656                 DRM_DEBUG_KMS("fb too big for bo (need %llu bytes, have %zu bytes)\n",
2657                               mul_u32_u32(max_size, tile_size), obj->base.size);
2658                 return -EINVAL;
2659         }
2660
2661         return 0;
2662 }
2663
2664 static int i9xx_format_to_fourcc(int format)
2665 {
2666         switch (format) {
2667         case DISPPLANE_8BPP:
2668                 return DRM_FORMAT_C8;
2669         case DISPPLANE_BGRX555:
2670                 return DRM_FORMAT_XRGB1555;
2671         case DISPPLANE_BGRX565:
2672                 return DRM_FORMAT_RGB565;
2673         default:
2674         case DISPPLANE_BGRX888:
2675                 return DRM_FORMAT_XRGB8888;
2676         case DISPPLANE_RGBX888:
2677                 return DRM_FORMAT_XBGR8888;
2678         case DISPPLANE_BGRX101010:
2679                 return DRM_FORMAT_XRGB2101010;
2680         case DISPPLANE_RGBX101010:
2681                 return DRM_FORMAT_XBGR2101010;
2682         }
2683 }
2684
2685 int skl_format_to_fourcc(int format, bool rgb_order, bool alpha)
2686 {
2687         switch (format) {
2688         case PLANE_CTL_FORMAT_RGB_565:
2689                 return DRM_FORMAT_RGB565;
2690         case PLANE_CTL_FORMAT_NV12:
2691                 return DRM_FORMAT_NV12;
2692         case PLANE_CTL_FORMAT_P010:
2693                 return DRM_FORMAT_P010;
2694         case PLANE_CTL_FORMAT_P012:
2695                 return DRM_FORMAT_P012;
2696         case PLANE_CTL_FORMAT_P016:
2697                 return DRM_FORMAT_P016;
2698         case PLANE_CTL_FORMAT_Y210:
2699                 return DRM_FORMAT_Y210;
2700         case PLANE_CTL_FORMAT_Y212:
2701                 return DRM_FORMAT_Y212;
2702         case PLANE_CTL_FORMAT_Y216:
2703                 return DRM_FORMAT_Y216;
2704         case PLANE_CTL_FORMAT_Y410:
2705                 return DRM_FORMAT_XVYU2101010;
2706         case PLANE_CTL_FORMAT_Y412:
2707                 return DRM_FORMAT_XVYU12_16161616;
2708         case PLANE_CTL_FORMAT_Y416:
2709                 return DRM_FORMAT_XVYU16161616;
2710         default:
2711         case PLANE_CTL_FORMAT_XRGB_8888:
2712                 if (rgb_order) {
2713                         if (alpha)
2714                                 return DRM_FORMAT_ABGR8888;
2715                         else
2716                                 return DRM_FORMAT_XBGR8888;
2717                 } else {
2718                         if (alpha)
2719                                 return DRM_FORMAT_ARGB8888;
2720                         else
2721                                 return DRM_FORMAT_XRGB8888;
2722                 }
2723         case PLANE_CTL_FORMAT_XRGB_2101010:
2724                 if (rgb_order)
2725                         return DRM_FORMAT_XBGR2101010;
2726                 else
2727                         return DRM_FORMAT_XRGB2101010;
2728         case PLANE_CTL_FORMAT_XRGB_16161616F:
2729                 if (rgb_order) {
2730                         if (alpha)
2731                                 return DRM_FORMAT_ABGR16161616F;
2732                         else
2733                                 return DRM_FORMAT_XBGR16161616F;
2734                 } else {
2735                         if (alpha)
2736                                 return DRM_FORMAT_ARGB16161616F;
2737                         else
2738                                 return DRM_FORMAT_XRGB16161616F;
2739                 }
2740         }
2741 }
2742
2743 static bool
2744 intel_alloc_initial_plane_obj(struct intel_crtc *crtc,
2745                               struct intel_initial_plane_config *plane_config)
2746 {
2747         struct drm_device *dev = crtc->base.dev;
2748         struct drm_i915_private *dev_priv = to_i915(dev);
2749         struct drm_i915_gem_object *obj = NULL;
2750         struct drm_mode_fb_cmd2 mode_cmd = { 0 };
2751         struct drm_framebuffer *fb = &plane_config->fb->base;
2752         u32 base_aligned = round_down(plane_config->base, PAGE_SIZE);
2753         u32 size_aligned = round_up(plane_config->base + plane_config->size,
2754                                     PAGE_SIZE);
2755
2756         size_aligned -= base_aligned;
2757
2758         if (plane_config->size == 0)
2759                 return false;
2760
2761         /* If the FB is too big, just don't use it since fbdev is not very
2762          * important and we should probably use that space with FBC or other
2763          * features. */
2764         if (size_aligned * 2 > dev_priv->stolen_usable_size)
2765                 return false;
2766
2767         switch (fb->modifier) {
2768         case DRM_FORMAT_MOD_LINEAR:
2769         case I915_FORMAT_MOD_X_TILED:
2770         case I915_FORMAT_MOD_Y_TILED:
2771                 break;
2772         default:
2773                 DRM_DEBUG_DRIVER("Unsupported modifier for initial FB: 0x%llx\n",
2774                                  fb->modifier);
2775                 return false;
2776         }
2777
2778         mutex_lock(&dev->struct_mutex);
2779         obj = i915_gem_object_create_stolen_for_preallocated(dev_priv,
2780                                                              base_aligned,
2781                                                              base_aligned,
2782                                                              size_aligned);
2783         mutex_unlock(&dev->struct_mutex);
2784         if (!obj)
2785                 return false;
2786
2787         switch (plane_config->tiling) {
2788         case I915_TILING_NONE:
2789                 break;
2790         case I915_TILING_X:
2791         case I915_TILING_Y:
2792                 obj->tiling_and_stride = fb->pitches[0] | plane_config->tiling;
2793                 break;
2794         default:
2795                 MISSING_CASE(plane_config->tiling);
2796                 return false;
2797         }
2798
2799         mode_cmd.pixel_format = fb->format->format;
2800         mode_cmd.width = fb->width;
2801         mode_cmd.height = fb->height;
2802         mode_cmd.pitches[0] = fb->pitches[0];
2803         mode_cmd.modifier[0] = fb->modifier;
2804         mode_cmd.flags = DRM_MODE_FB_MODIFIERS;
2805
2806         if (intel_framebuffer_init(to_intel_framebuffer(fb), obj, &mode_cmd)) {
2807                 DRM_DEBUG_KMS("intel fb init failed\n");
2808                 goto out_unref_obj;
2809         }
2810
2811
2812         DRM_DEBUG_KMS("initial plane fb obj %p\n", obj);
2813         return true;
2814
2815 out_unref_obj:
2816         i915_gem_object_put(obj);
2817         return false;
2818 }
2819
2820 static void
2821 intel_set_plane_visible(struct intel_crtc_state *crtc_state,
2822                         struct intel_plane_state *plane_state,
2823                         bool visible)
2824 {
2825         struct intel_plane *plane = to_intel_plane(plane_state->base.plane);
2826
2827         plane_state->base.visible = visible;
2828
2829         if (visible)
2830                 crtc_state->base.plane_mask |= drm_plane_mask(&plane->base);
2831         else
2832                 crtc_state->base.plane_mask &= ~drm_plane_mask(&plane->base);
2833 }
2834
2835 static void fixup_active_planes(struct intel_crtc_state *crtc_state)
2836 {
2837         struct drm_i915_private *dev_priv = to_i915(crtc_state->base.crtc->dev);
2838         struct drm_plane *plane;
2839
2840         /*
2841          * Active_planes aliases if multiple "primary" or cursor planes
2842          * have been used on the same (or wrong) pipe. plane_mask uses
2843          * unique ids, hence we can use that to reconstruct active_planes.
2844          */
2845         crtc_state->active_planes = 0;
2846
2847         drm_for_each_plane_mask(plane, &dev_priv->drm,
2848                                 crtc_state->base.plane_mask)
2849                 crtc_state->active_planes |= BIT(to_intel_plane(plane)->id);
2850 }
2851
2852 static void intel_plane_disable_noatomic(struct intel_crtc *crtc,
2853                                          struct intel_plane *plane)
2854 {
2855         struct intel_crtc_state *crtc_state =
2856                 to_intel_crtc_state(crtc->base.state);
2857         struct intel_plane_state *plane_state =
2858                 to_intel_plane_state(plane->base.state);
2859
2860         DRM_DEBUG_KMS("Disabling [PLANE:%d:%s] on [CRTC:%d:%s]\n",
2861                       plane->base.base.id, plane->base.name,
2862                       crtc->base.base.id, crtc->base.name);
2863
2864         intel_set_plane_visible(crtc_state, plane_state, false);
2865         fixup_active_planes(crtc_state);
2866
2867         if (plane->id == PLANE_PRIMARY)
2868                 intel_pre_disable_primary_noatomic(&crtc->base);
2869
2870         intel_disable_plane(plane, crtc_state);
2871 }
2872
2873 static void
2874 intel_find_initial_plane_obj(struct intel_crtc *intel_crtc,
2875                              struct intel_initial_plane_config *plane_config)
2876 {
2877         struct drm_device *dev = intel_crtc->base.dev;
2878         struct drm_i915_private *dev_priv = to_i915(dev);
2879         struct drm_crtc *c;
2880         struct drm_i915_gem_object *obj;
2881         struct drm_plane *primary = intel_crtc->base.primary;
2882         struct drm_plane_state *plane_state = primary->state;
2883         struct intel_plane *intel_plane = to_intel_plane(primary);
2884         struct intel_plane_state *intel_state =
2885                 to_intel_plane_state(plane_state);
2886         struct drm_framebuffer *fb;
2887
2888         if (!plane_config->fb)
2889                 return;
2890
2891         if (intel_alloc_initial_plane_obj(intel_crtc, plane_config)) {
2892                 fb = &plane_config->fb->base;
2893                 goto valid_fb;
2894         }
2895
2896         kfree(plane_config->fb);
2897
2898         /*
2899          * Failed to alloc the obj, check to see if we should share
2900          * an fb with another CRTC instead
2901          */
2902         for_each_crtc(dev, c) {
2903                 struct intel_plane_state *state;
2904
2905                 if (c == &intel_crtc->base)
2906                         continue;
2907
2908                 if (!to_intel_crtc(c)->active)
2909                         continue;
2910
2911                 state = to_intel_plane_state(c->primary->state);
2912                 if (!state->vma)
2913                         continue;
2914
2915                 if (intel_plane_ggtt_offset(state) == plane_config->base) {
2916                         fb = state->base.fb;
2917                         drm_framebuffer_get(fb);
2918                         goto valid_fb;
2919                 }
2920         }
2921
2922         /*
2923          * We've failed to reconstruct the BIOS FB.  Current display state
2924          * indicates that the primary plane is visible, but has a NULL FB,
2925          * which will lead to problems later if we don't fix it up.  The
2926          * simplest solution is to just disable the primary plane now and
2927          * pretend the BIOS never had it enabled.
2928          */
2929         intel_plane_disable_noatomic(intel_crtc, intel_plane);
2930
2931         return;
2932
2933 valid_fb:
2934         intel_state->base.rotation = plane_config->rotation;
2935         intel_fill_fb_ggtt_view(&intel_state->view, fb,
2936                                 intel_state->base.rotation);
2937         intel_state->color_plane[0].stride =
2938                 intel_fb_pitch(fb, 0, intel_state->base.rotation);
2939
2940         mutex_lock(&dev->struct_mutex);
2941         intel_state->vma =
2942                 intel_pin_and_fence_fb_obj(fb,
2943                                            &intel_state->view,
2944                                            intel_plane_uses_fence(intel_state),
2945                                            &intel_state->flags);
2946         mutex_unlock(&dev->struct_mutex);
2947         if (IS_ERR(intel_state->vma)) {
2948                 DRM_ERROR("failed to pin boot fb on pipe %d: %li\n",
2949                           intel_crtc->pipe, PTR_ERR(intel_state->vma));
2950
2951                 intel_state->vma = NULL;
2952                 drm_framebuffer_put(fb);
2953                 return;
2954         }
2955
2956         obj = intel_fb_obj(fb);
2957         intel_fb_obj_flush(obj, ORIGIN_DIRTYFB);
2958
2959         plane_state->src_x = 0;
2960         plane_state->src_y = 0;
2961         plane_state->src_w = fb->width << 16;
2962         plane_state->src_h = fb->height << 16;
2963
2964         plane_state->crtc_x = 0;
2965         plane_state->crtc_y = 0;
2966         plane_state->crtc_w = fb->width;
2967         plane_state->crtc_h = fb->height;
2968
2969         intel_state->base.src = drm_plane_state_src(plane_state);
2970         intel_state->base.dst = drm_plane_state_dest(plane_state);
2971
2972         if (i915_gem_object_is_tiled(obj))
2973                 dev_priv->preserve_bios_swizzle = true;
2974
2975         plane_state->fb = fb;
2976         plane_state->crtc = &intel_crtc->base;
2977
2978         atomic_or(to_intel_plane(primary)->frontbuffer_bit,
2979                   &obj->frontbuffer_bits);
2980 }
2981
2982 static int skl_max_plane_width(const struct drm_framebuffer *fb,
2983                                int color_plane,
2984                                unsigned int rotation)
2985 {
2986         int cpp = fb->format->cpp[color_plane];
2987
2988         switch (fb->modifier) {
2989         case DRM_FORMAT_MOD_LINEAR:
2990         case I915_FORMAT_MOD_X_TILED:
2991                 return 4096;
2992         case I915_FORMAT_MOD_Y_TILED_CCS:
2993         case I915_FORMAT_MOD_Yf_TILED_CCS:
2994                 /* FIXME AUX plane? */
2995         case I915_FORMAT_MOD_Y_TILED:
2996         case I915_FORMAT_MOD_Yf_TILED:
2997                 if (cpp == 8)
2998                         return 2048;
2999                 else
3000                         return 4096;
3001         default:
3002                 MISSING_CASE(fb->modifier);
3003                 return 2048;
3004         }
3005 }
3006
3007 static int glk_max_plane_width(const struct drm_framebuffer *fb,
3008                                int color_plane,
3009                                unsigned int rotation)
3010 {
3011         int cpp = fb->format->cpp[color_plane];
3012
3013         switch (fb->modifier) {
3014         case DRM_FORMAT_MOD_LINEAR:
3015         case I915_FORMAT_MOD_X_TILED:
3016                 if (cpp == 8)
3017                         return 4096;
3018                 else
3019                         return 5120;
3020         case I915_FORMAT_MOD_Y_TILED_CCS:
3021         case I915_FORMAT_MOD_Yf_TILED_CCS:
3022                 /* FIXME AUX plane? */
3023         case I915_FORMAT_MOD_Y_TILED:
3024         case I915_FORMAT_MOD_Yf_TILED:
3025                 if (cpp == 8)
3026                         return 2048;
3027                 else
3028                         return 5120;
3029         default:
3030                 MISSING_CASE(fb->modifier);
3031                 return 2048;
3032         }
3033 }
3034
3035 static int icl_max_plane_width(const struct drm_framebuffer *fb,
3036                                int color_plane,
3037                                unsigned int rotation)
3038 {
3039         return 5120;
3040 }
3041
3042 static bool skl_check_main_ccs_coordinates(struct intel_plane_state *plane_state,
3043                                            int main_x, int main_y, u32 main_offset)
3044 {
3045         const struct drm_framebuffer *fb = plane_state->base.fb;
3046         int hsub = fb->format->hsub;
3047         int vsub = fb->format->vsub;
3048         int aux_x = plane_state->color_plane[1].x;
3049         int aux_y = plane_state->color_plane[1].y;
3050         u32 aux_offset = plane_state->color_plane[1].offset;
3051         u32 alignment = intel_surf_alignment(fb, 1);
3052
3053         while (aux_offset >= main_offset && aux_y <= main_y) {
3054                 int x, y;
3055
3056                 if (aux_x == main_x && aux_y == main_y)
3057                         break;
3058
3059                 if (aux_offset == 0)
3060                         break;
3061
3062                 x = aux_x / hsub;
3063                 y = aux_y / vsub;
3064                 aux_offset = intel_plane_adjust_aligned_offset(&x, &y, plane_state, 1,
3065                                                                aux_offset, aux_offset - alignment);
3066                 aux_x = x * hsub + aux_x % hsub;
3067                 aux_y = y * vsub + aux_y % vsub;
3068         }
3069
3070         if (aux_x != main_x || aux_y != main_y)
3071                 return false;
3072
3073         plane_state->color_plane[1].offset = aux_offset;
3074         plane_state->color_plane[1].x = aux_x;
3075         plane_state->color_plane[1].y = aux_y;
3076
3077         return true;
3078 }
3079
3080 static int skl_check_main_surface(struct intel_plane_state *plane_state)
3081 {
3082         struct drm_i915_private *dev_priv = to_i915(plane_state->base.plane->dev);
3083         const struct drm_framebuffer *fb = plane_state->base.fb;
3084         unsigned int rotation = plane_state->base.rotation;
3085         int x = plane_state->base.src.x1 >> 16;
3086         int y = plane_state->base.src.y1 >> 16;
3087         int w = drm_rect_width(&plane_state->base.src) >> 16;
3088         int h = drm_rect_height(&plane_state->base.src) >> 16;
3089         int max_width;
3090         int max_height = 4096;
3091         u32 alignment, offset, aux_offset = plane_state->color_plane[1].offset;
3092
3093         if (INTEL_GEN(dev_priv) >= 11)
3094                 max_width = icl_max_plane_width(fb, 0, rotation);
3095         else if (INTEL_GEN(dev_priv) >= 10 || IS_GEMINILAKE(dev_priv))
3096                 max_width = glk_max_plane_width(fb, 0, rotation);
3097         else
3098                 max_width = skl_max_plane_width(fb, 0, rotation);
3099
3100         if (w > max_width || h > max_height) {
3101                 DRM_DEBUG_KMS("requested Y/RGB source size %dx%d too big (limit %dx%d)\n",
3102                               w, h, max_width, max_height);
3103                 return -EINVAL;
3104         }
3105
3106         intel_add_fb_offsets(&x, &y, plane_state, 0);
3107         offset = intel_plane_compute_aligned_offset(&x, &y, plane_state, 0);
3108         alignment = intel_surf_alignment(fb, 0);
3109
3110         /*
3111          * AUX surface offset is specified as the distance from the
3112          * main surface offset, and it must be non-negative. Make
3113          * sure that is what we will get.
3114          */
3115         if (offset > aux_offset)
3116                 offset = intel_plane_adjust_aligned_offset(&x, &y, plane_state, 0,
3117                                                            offset, aux_offset & ~(alignment - 1));
3118
3119         /*
3120          * When using an X-tiled surface, the plane blows up
3121          * if the x offset + width exceed the stride.
3122          *
3123          * TODO: linear and Y-tiled seem fine, Yf untested,
3124          */
3125         if (fb->modifier == I915_FORMAT_MOD_X_TILED) {
3126                 int cpp = fb->format->cpp[0];
3127
3128                 while ((x + w) * cpp > plane_state->color_plane[0].stride) {
3129                         if (offset == 0) {
3130                                 DRM_DEBUG_KMS("Unable to find suitable display surface offset due to X-tiling\n");
3131                                 return -EINVAL;
3132                         }
3133
3134                         offset = intel_plane_adjust_aligned_offset(&x, &y, plane_state, 0,
3135                                                                    offset, offset - alignment);
3136                 }
3137         }
3138
3139         /*
3140          * CCS AUX surface doesn't have its own x/y offsets, we must make sure
3141          * they match with the main surface x/y offsets.
3142          */
3143         if (is_ccs_modifier(fb->modifier)) {
3144                 while (!skl_check_main_ccs_coordinates(plane_state, x, y, offset)) {
3145                         if (offset == 0)
3146                                 break;
3147
3148                         offset = intel_plane_adjust_aligned_offset(&x, &y, plane_state, 0,
3149                                                                    offset, offset - alignment);
3150                 }
3151
3152                 if (x != plane_state->color_plane[1].x || y != plane_state->color_plane[1].y) {
3153                         DRM_DEBUG_KMS("Unable to find suitable display surface offset due to CCS\n");
3154                         return -EINVAL;
3155                 }
3156         }
3157
3158         plane_state->color_plane[0].offset = offset;
3159         plane_state->color_plane[0].x = x;
3160         plane_state->color_plane[0].y = y;
3161
3162         return 0;
3163 }
3164
3165 static int skl_check_nv12_aux_surface(struct intel_plane_state *plane_state)
3166 {
3167         const struct drm_framebuffer *fb = plane_state->base.fb;
3168         unsigned int rotation = plane_state->base.rotation;
3169         int max_width = skl_max_plane_width(fb, 1, rotation);
3170         int max_height = 4096;
3171         int x = plane_state->base.src.x1 >> 17;
3172         int y = plane_state->base.src.y1 >> 17;
3173         int w = drm_rect_width(&plane_state->base.src) >> 17;
3174         int h = drm_rect_height(&plane_state->base.src) >> 17;
3175         u32 offset;
3176
3177         intel_add_fb_offsets(&x, &y, plane_state, 1);
3178         offset = intel_plane_compute_aligned_offset(&x, &y, plane_state, 1);
3179
3180         /* FIXME not quite sure how/if these apply to the chroma plane */
3181         if (w > max_width || h > max_height) {
3182                 DRM_DEBUG_KMS("CbCr source size %dx%d too big (limit %dx%d)\n",
3183                               w, h, max_width, max_height);
3184                 return -EINVAL;
3185         }
3186
3187         plane_state->color_plane[1].offset = offset;
3188         plane_state->color_plane[1].x = x;
3189         plane_state->color_plane[1].y = y;
3190
3191         return 0;
3192 }
3193
3194 static int skl_check_ccs_aux_surface(struct intel_plane_state *plane_state)
3195 {
3196         const struct drm_framebuffer *fb = plane_state->base.fb;
3197         int src_x = plane_state->base.src.x1 >> 16;
3198         int src_y = plane_state->base.src.y1 >> 16;
3199         int hsub = fb->format->hsub;
3200         int vsub = fb->format->vsub;
3201         int x = src_x / hsub;
3202         int y = src_y / vsub;
3203         u32 offset;
3204
3205         intel_add_fb_offsets(&x, &y, plane_state, 1);
3206         offset = intel_plane_compute_aligned_offset(&x, &y, plane_state, 1);
3207
3208         plane_state->color_plane[1].offset = offset;
3209         plane_state->color_plane[1].x = x * hsub + src_x % hsub;
3210         plane_state->color_plane[1].y = y * vsub + src_y % vsub;
3211
3212         return 0;
3213 }
3214
3215 int skl_check_plane_surface(struct intel_plane_state *plane_state)
3216 {
3217         const struct drm_framebuffer *fb = plane_state->base.fb;
3218         unsigned int rotation = plane_state->base.rotation;
3219         int ret;
3220
3221         intel_fill_fb_ggtt_view(&plane_state->view, fb, rotation);
3222         plane_state->color_plane[0].stride = intel_fb_pitch(fb, 0, rotation);
3223         plane_state->color_plane[1].stride = intel_fb_pitch(fb, 1, rotation);
3224
3225         ret = intel_plane_check_stride(plane_state);
3226         if (ret)
3227                 return ret;
3228
3229         if (!plane_state->base.visible)
3230                 return 0;
3231
3232         /* Rotate src coordinates to match rotated GTT view */
3233         if (drm_rotation_90_or_270(rotation))
3234                 drm_rect_rotate(&plane_state->base.src,
3235                                 fb->width << 16, fb->height << 16,
3236                                 DRM_MODE_ROTATE_270);
3237
3238         /*
3239          * Handle the AUX surface first since
3240          * the main surface setup depends on it.
3241          */
3242         if (is_planar_yuv_format(fb->format->format)) {
3243                 ret = skl_check_nv12_aux_surface(plane_state);
3244                 if (ret)
3245                         return ret;
3246         } else if (is_ccs_modifier(fb->modifier)) {
3247                 ret = skl_check_ccs_aux_surface(plane_state);
3248                 if (ret)
3249                         return ret;
3250         } else {
3251                 plane_state->color_plane[1].offset = ~0xfff;
3252                 plane_state->color_plane[1].x = 0;
3253                 plane_state->color_plane[1].y = 0;
3254         }
3255
3256         ret = skl_check_main_surface(plane_state);
3257         if (ret)
3258                 return ret;
3259
3260         return 0;
3261 }
3262
3263 unsigned int
3264 i9xx_plane_max_stride(struct intel_plane *plane,
3265                       u32 pixel_format, u64 modifier,
3266                       unsigned int rotation)
3267 {
3268         struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
3269
3270         if (!HAS_GMCH(dev_priv)) {
3271                 return 32*1024;
3272         } else if (INTEL_GEN(dev_priv) >= 4) {
3273                 if (modifier == I915_FORMAT_MOD_X_TILED)
3274                         return 16*1024;
3275                 else
3276                         return 32*1024;
3277         } else if (INTEL_GEN(dev_priv) >= 3) {
3278                 if (modifier == I915_FORMAT_MOD_X_TILED)
3279                         return 8*1024;
3280                 else
3281                         return 16*1024;
3282         } else {
3283                 if (plane->i9xx_plane == PLANE_C)
3284                         return 4*1024;
3285                 else
3286                         return 8*1024;
3287         }
3288 }
3289
3290 static u32 i9xx_plane_ctl_crtc(const struct intel_crtc_state *crtc_state)
3291 {
3292         struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
3293         struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
3294         u32 dspcntr = 0;
3295
3296         if (crtc_state->gamma_enable)
3297                 dspcntr |= DISPPLANE_GAMMA_ENABLE;
3298
3299         if (crtc_state->csc_enable)
3300                 dspcntr |= DISPPLANE_PIPE_CSC_ENABLE;
3301
3302         if (INTEL_GEN(dev_priv) < 5)
3303                 dspcntr |= DISPPLANE_SEL_PIPE(crtc->pipe);
3304
3305         return dspcntr;
3306 }
3307
3308 static u32 i9xx_plane_ctl(const struct intel_crtc_state *crtc_state,
3309                           const struct intel_plane_state *plane_state)
3310 {
3311         struct drm_i915_private *dev_priv =
3312                 to_i915(plane_state->base.plane->dev);
3313         const struct drm_framebuffer *fb = plane_state->base.fb;
3314         unsigned int rotation = plane_state->base.rotation;
3315         u32 dspcntr;
3316
3317         dspcntr = DISPLAY_PLANE_ENABLE;
3318
3319         if (IS_G4X(dev_priv) || IS_GEN(dev_priv, 5) ||
3320             IS_GEN(dev_priv, 6) || IS_IVYBRIDGE(dev_priv))
3321                 dspcntr |= DISPPLANE_TRICKLE_FEED_DISABLE;
3322
3323         switch (fb->format->format) {
3324         case DRM_FORMAT_C8:
3325                 dspcntr |= DISPPLANE_8BPP;
3326                 break;
3327         case DRM_FORMAT_XRGB1555:
3328                 dspcntr |= DISPPLANE_BGRX555;
3329                 break;
3330         case DRM_FORMAT_RGB565:
3331                 dspcntr |= DISPPLANE_BGRX565;
3332                 break;
3333         case DRM_FORMAT_XRGB8888:
3334                 dspcntr |= DISPPLANE_BGRX888;
3335                 break;
3336         case DRM_FORMAT_XBGR8888:
3337                 dspcntr |= DISPPLANE_RGBX888;
3338                 break;
3339         case DRM_FORMAT_XRGB2101010:
3340                 dspcntr |= DISPPLANE_BGRX101010;
3341                 break;
3342         case DRM_FORMAT_XBGR2101010:
3343                 dspcntr |= DISPPLANE_RGBX101010;
3344                 break;
3345         default:
3346                 MISSING_CASE(fb->format->format);
3347                 return 0;
3348         }
3349
3350         if (INTEL_GEN(dev_priv) >= 4 &&
3351             fb->modifier == I915_FORMAT_MOD_X_TILED)
3352                 dspcntr |= DISPPLANE_TILED;
3353
3354         if (rotation & DRM_MODE_ROTATE_180)
3355                 dspcntr |= DISPPLANE_ROTATE_180;
3356
3357         if (rotation & DRM_MODE_REFLECT_X)
3358                 dspcntr |= DISPPLANE_MIRROR;
3359
3360         return dspcntr;
3361 }
3362
3363 int i9xx_check_plane_surface(struct intel_plane_state *plane_state)
3364 {
3365         struct drm_i915_private *dev_priv =
3366                 to_i915(plane_state->base.plane->dev);
3367         const struct drm_framebuffer *fb = plane_state->base.fb;
3368         unsigned int rotation = plane_state->base.rotation;
3369         int src_x = plane_state->base.src.x1 >> 16;
3370         int src_y = plane_state->base.src.y1 >> 16;
3371         u32 offset;
3372         int ret;
3373
3374         intel_fill_fb_ggtt_view(&plane_state->view, fb, rotation);
3375         plane_state->color_plane[0].stride = intel_fb_pitch(fb, 0, rotation);
3376
3377         ret = intel_plane_check_stride(plane_state);
3378         if (ret)
3379                 return ret;
3380
3381         intel_add_fb_offsets(&src_x, &src_y, plane_state, 0);
3382
3383         if (INTEL_GEN(dev_priv) >= 4)
3384                 offset = intel_plane_compute_aligned_offset(&src_x, &src_y,
3385                                                             plane_state, 0);
3386         else
3387                 offset = 0;
3388
3389         /* HSW/BDW do this automagically in hardware */
3390         if (!IS_HASWELL(dev_priv) && !IS_BROADWELL(dev_priv)) {
3391                 int src_w = drm_rect_width(&plane_state->base.src) >> 16;
3392                 int src_h = drm_rect_height(&plane_state->base.src) >> 16;
3393
3394                 if (rotation & DRM_MODE_ROTATE_180) {
3395                         src_x += src_w - 1;
3396                         src_y += src_h - 1;
3397                 } else if (rotation & DRM_MODE_REFLECT_X) {
3398                         src_x += src_w - 1;
3399                 }
3400         }
3401
3402         plane_state->color_plane[0].offset = offset;
3403         plane_state->color_plane[0].x = src_x;
3404         plane_state->color_plane[0].y = src_y;
3405
3406         return 0;
3407 }
3408
3409 static int
3410 i9xx_plane_check(struct intel_crtc_state *crtc_state,
3411                  struct intel_plane_state *plane_state)
3412 {
3413         int ret;
3414
3415         ret = chv_plane_check_rotation(plane_state);
3416         if (ret)
3417                 return ret;
3418
3419         ret = drm_atomic_helper_check_plane_state(&plane_state->base,
3420                                                   &crtc_state->base,
3421                                                   DRM_PLANE_HELPER_NO_SCALING,
3422                                                   DRM_PLANE_HELPER_NO_SCALING,
3423                                                   false, true);
3424         if (ret)
3425                 return ret;
3426
3427         if (!plane_state->base.visible)
3428                 return 0;
3429
3430         ret = intel_plane_check_src_coordinates(plane_state);
3431         if (ret)
3432                 return ret;
3433
3434         ret = i9xx_check_plane_surface(plane_state);
3435         if (ret)
3436                 return ret;
3437
3438         plane_state->ctl = i9xx_plane_ctl(crtc_state, plane_state);
3439
3440         return 0;
3441 }
3442
3443 static void i9xx_update_plane(struct intel_plane *plane,
3444                               const struct intel_crtc_state *crtc_state,
3445                               const struct intel_plane_state *plane_state)
3446 {
3447         struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
3448         enum i9xx_plane_id i9xx_plane = plane->i9xx_plane;
3449         u32 linear_offset;
3450         int x = plane_state->color_plane[0].x;
3451         int y = plane_state->color_plane[0].y;
3452         unsigned long irqflags;
3453         u32 dspaddr_offset;
3454         u32 dspcntr;
3455
3456         dspcntr = plane_state->ctl | i9xx_plane_ctl_crtc(crtc_state);
3457
3458         linear_offset = intel_fb_xy_to_linear(x, y, plane_state, 0);
3459
3460         if (INTEL_GEN(dev_priv) >= 4)
3461                 dspaddr_offset = plane_state->color_plane[0].offset;
3462         else
3463                 dspaddr_offset = linear_offset;
3464
3465         spin_lock_irqsave(&dev_priv->uncore.lock, irqflags);
3466
3467         I915_WRITE_FW(DSPSTRIDE(i9xx_plane), plane_state->color_plane[0].stride);
3468
3469         if (INTEL_GEN(dev_priv) < 4) {
3470                 /* pipesrc and dspsize control the size that is scaled from,
3471                  * which should always be the user's requested size.
3472                  */
3473                 I915_WRITE_FW(DSPPOS(i9xx_plane), 0);
3474                 I915_WRITE_FW(DSPSIZE(i9xx_plane),
3475                               ((crtc_state->pipe_src_h - 1) << 16) |
3476                               (crtc_state->pipe_src_w - 1));
3477         } else if (IS_CHERRYVIEW(dev_priv) && i9xx_plane == PLANE_B) {
3478                 I915_WRITE_FW(PRIMPOS(i9xx_plane), 0);
3479                 I915_WRITE_FW(PRIMSIZE(i9xx_plane),
3480                               ((crtc_state->pipe_src_h - 1) << 16) |
3481                               (crtc_state->pipe_src_w - 1));
3482                 I915_WRITE_FW(PRIMCNSTALPHA(i9xx_plane), 0);
3483         }
3484
3485         if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv)) {
3486                 I915_WRITE_FW(DSPOFFSET(i9xx_plane), (y << 16) | x);
3487         } else if (INTEL_GEN(dev_priv) >= 4) {
3488                 I915_WRITE_FW(DSPLINOFF(i9xx_plane), linear_offset);
3489                 I915_WRITE_FW(DSPTILEOFF(i9xx_plane), (y << 16) | x);
3490         }
3491
3492         /*
3493          * The control register self-arms if the plane was previously
3494          * disabled. Try to make the plane enable atomic by writing
3495          * the control register just before the surface register.
3496          */
3497         I915_WRITE_FW(DSPCNTR(i9xx_plane), dspcntr);
3498         if (INTEL_GEN(dev_priv) >= 4)
3499                 I915_WRITE_FW(DSPSURF(i9xx_plane),
3500                               intel_plane_ggtt_offset(plane_state) +
3501                               dspaddr_offset);
3502         else
3503                 I915_WRITE_FW(DSPADDR(i9xx_plane),
3504                               intel_plane_ggtt_offset(plane_state) +
3505                               dspaddr_offset);
3506
3507         spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags);
3508 }
3509
3510 static void i9xx_disable_plane(struct intel_plane *plane,
3511                                const struct intel_crtc_state *crtc_state)
3512 {
3513         struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
3514         enum i9xx_plane_id i9xx_plane = plane->i9xx_plane;
3515         unsigned long irqflags;
3516         u32 dspcntr;
3517
3518         /*
3519          * DSPCNTR pipe gamma enable on g4x+ and pipe csc
3520          * enable on ilk+ affect the pipe bottom color as
3521          * well, so we must configure them even if the plane
3522          * is disabled.
3523          *
3524          * On pre-g4x there is no way to gamma correct the
3525          * pipe bottom color but we'll keep on doing this
3526          * anyway so that the crtc state readout works correctly.
3527          */
3528         dspcntr = i9xx_plane_ctl_crtc(crtc_state);
3529
3530         spin_lock_irqsave(&dev_priv->uncore.lock, irqflags);
3531
3532         I915_WRITE_FW(DSPCNTR(i9xx_plane), dspcntr);
3533         if (INTEL_GEN(dev_priv) >= 4)
3534                 I915_WRITE_FW(DSPSURF(i9xx_plane), 0);
3535         else
3536                 I915_WRITE_FW(DSPADDR(i9xx_plane), 0);
3537
3538         spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags);
3539 }
3540
3541 static bool i9xx_plane_get_hw_state(struct intel_plane *plane,
3542                                     enum pipe *pipe)
3543 {
3544         struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
3545         enum intel_display_power_domain power_domain;
3546         enum i9xx_plane_id i9xx_plane = plane->i9xx_plane;
3547         intel_wakeref_t wakeref;
3548         bool ret;
3549         u32 val;
3550
3551         /*
3552          * Not 100% correct for planes that can move between pipes,
3553          * but that's only the case for gen2-4 which don't have any
3554          * display power wells.
3555          */
3556         power_domain = POWER_DOMAIN_PIPE(plane->pipe);
3557         wakeref = intel_display_power_get_if_enabled(dev_priv, power_domain);
3558         if (!wakeref)
3559                 return false;
3560
3561         val = I915_READ(DSPCNTR(i9xx_plane));
3562
3563         ret = val & DISPLAY_PLANE_ENABLE;
3564
3565         if (INTEL_GEN(dev_priv) >= 5)
3566                 *pipe = plane->pipe;
3567         else
3568                 *pipe = (val & DISPPLANE_SEL_PIPE_MASK) >>
3569                         DISPPLANE_SEL_PIPE_SHIFT;
3570
3571         intel_display_power_put(dev_priv, power_domain, wakeref);
3572
3573         return ret;
3574 }
3575
3576 static u32
3577 intel_fb_stride_alignment(const struct drm_framebuffer *fb, int color_plane)
3578 {
3579         if (fb->modifier == DRM_FORMAT_MOD_LINEAR)
3580                 return 64;
3581         else
3582                 return intel_tile_width_bytes(fb, color_plane);
3583 }
3584
3585 static void skl_detach_scaler(struct intel_crtc *intel_crtc, int id)
3586 {
3587         struct drm_device *dev = intel_crtc->base.dev;
3588         struct drm_i915_private *dev_priv = to_i915(dev);
3589
3590         I915_WRITE(SKL_PS_CTRL(intel_crtc->pipe, id), 0);
3591         I915_WRITE(SKL_PS_WIN_POS(intel_crtc->pipe, id), 0);
3592         I915_WRITE(SKL_PS_WIN_SZ(intel_crtc->pipe, id), 0);
3593 }
3594
3595 /*
3596  * This function detaches (aka. unbinds) unused scalers in hardware
3597  */
3598 static void skl_detach_scalers(const struct intel_crtc_state *crtc_state)
3599 {
3600         struct intel_crtc *intel_crtc = to_intel_crtc(crtc_state->base.crtc);
3601         const struct intel_crtc_scaler_state *scaler_state =
3602                 &crtc_state->scaler_state;
3603         int i;
3604
3605         /* loop through and disable scalers that aren't in use */
3606         for (i = 0; i < intel_crtc->num_scalers; i++) {
3607                 if (!scaler_state->scalers[i].in_use)
3608                         skl_detach_scaler(intel_crtc, i);
3609         }
3610 }
3611
3612 static unsigned int skl_plane_stride_mult(const struct drm_framebuffer *fb,
3613                                           int color_plane, unsigned int rotation)
3614 {
3615         /*
3616          * The stride is either expressed as a multiple of 64 bytes chunks for
3617          * linear buffers or in number of tiles for tiled buffers.
3618          */
3619         if (fb->modifier == DRM_FORMAT_MOD_LINEAR)
3620                 return 64;
3621         else if (drm_rotation_90_or_270(rotation))
3622                 return intel_tile_height(fb, color_plane);
3623         else
3624                 return intel_tile_width_bytes(fb, color_plane);
3625 }
3626
3627 u32 skl_plane_stride(const struct intel_plane_state *plane_state,
3628                      int color_plane)
3629 {
3630         const struct drm_framebuffer *fb = plane_state->base.fb;
3631         unsigned int rotation = plane_state->base.rotation;
3632         u32 stride = plane_state->color_plane[color_plane].stride;
3633
3634         if (color_plane >= fb->format->num_planes)
3635                 return 0;
3636
3637         return stride / skl_plane_stride_mult(fb, color_plane, rotation);
3638 }
3639
3640 static u32 skl_plane_ctl_format(u32 pixel_format)
3641 {
3642         switch (pixel_format) {
3643         case DRM_FORMAT_C8:
3644                 return PLANE_CTL_FORMAT_INDEXED;
3645         case DRM_FORMAT_RGB565:
3646                 return PLANE_CTL_FORMAT_RGB_565;
3647         case DRM_FORMAT_XBGR8888:
3648         case DRM_FORMAT_ABGR8888:
3649                 return PLANE_CTL_FORMAT_XRGB_8888 | PLANE_CTL_ORDER_RGBX;
3650         case DRM_FORMAT_XRGB8888:
3651         case DRM_FORMAT_ARGB8888:
3652                 return PLANE_CTL_FORMAT_XRGB_8888;
3653         case DRM_FORMAT_XRGB2101010:
3654                 return PLANE_CTL_FORMAT_XRGB_2101010;
3655         case DRM_FORMAT_XBGR2101010:
3656                 return PLANE_CTL_ORDER_RGBX | PLANE_CTL_FORMAT_XRGB_2101010;
3657         case DRM_FORMAT_XBGR16161616F:
3658         case DRM_FORMAT_ABGR16161616F:
3659                 return PLANE_CTL_FORMAT_XRGB_16161616F | PLANE_CTL_ORDER_RGBX;
3660         case DRM_FORMAT_XRGB16161616F:
3661         case DRM_FORMAT_ARGB16161616F:
3662                 return PLANE_CTL_FORMAT_XRGB_16161616F;
3663         case DRM_FORMAT_YUYV:
3664                 return PLANE_CTL_FORMAT_YUV422 | PLANE_CTL_YUV422_YUYV;
3665         case DRM_FORMAT_YVYU:
3666                 return PLANE_CTL_FORMAT_YUV422 | PLANE_CTL_YUV422_YVYU;
3667         case DRM_FORMAT_UYVY:
3668                 return PLANE_CTL_FORMAT_YUV422 | PLANE_CTL_YUV422_UYVY;
3669         case DRM_FORMAT_VYUY:
3670                 return PLANE_CTL_FORMAT_YUV422 | PLANE_CTL_YUV422_VYUY;
3671         case DRM_FORMAT_NV12:
3672                 return PLANE_CTL_FORMAT_NV12;
3673         case DRM_FORMAT_P010:
3674                 return PLANE_CTL_FORMAT_P010;
3675         case DRM_FORMAT_P012:
3676                 return PLANE_CTL_FORMAT_P012;
3677         case DRM_FORMAT_P016:
3678                 return PLANE_CTL_FORMAT_P016;
3679         case DRM_FORMAT_Y210:
3680                 return PLANE_CTL_FORMAT_Y210;
3681         case DRM_FORMAT_Y212:
3682                 return PLANE_CTL_FORMAT_Y212;
3683         case DRM_FORMAT_Y216:
3684                 return PLANE_CTL_FORMAT_Y216;
3685         case DRM_FORMAT_XVYU2101010:
3686                 return PLANE_CTL_FORMAT_Y410;
3687         case DRM_FORMAT_XVYU12_16161616:
3688                 return PLANE_CTL_FORMAT_Y412;
3689         case DRM_FORMAT_XVYU16161616:
3690                 return PLANE_CTL_FORMAT_Y416;
3691         default:
3692                 MISSING_CASE(pixel_format);
3693         }
3694
3695         return 0;
3696 }
3697
3698 static u32 skl_plane_ctl_alpha(const struct intel_plane_state *plane_state)
3699 {
3700         if (!plane_state->base.fb->format->has_alpha)
3701                 return PLANE_CTL_ALPHA_DISABLE;
3702
3703         switch (plane_state->base.pixel_blend_mode) {
3704         case DRM_MODE_BLEND_PIXEL_NONE:
3705                 return PLANE_CTL_ALPHA_DISABLE;
3706         case DRM_MODE_BLEND_PREMULTI:
3707                 return PLANE_CTL_ALPHA_SW_PREMULTIPLY;
3708         case DRM_MODE_BLEND_COVERAGE:
3709                 return PLANE_CTL_ALPHA_HW_PREMULTIPLY;
3710         default:
3711                 MISSING_CASE(plane_state->base.pixel_blend_mode);
3712                 return PLANE_CTL_ALPHA_DISABLE;
3713         }
3714 }
3715
3716 static u32 glk_plane_color_ctl_alpha(const struct intel_plane_state *plane_state)
3717 {
3718         if (!plane_state->base.fb->format->has_alpha)
3719                 return PLANE_COLOR_ALPHA_DISABLE;
3720
3721         switch (plane_state->base.pixel_blend_mode) {
3722         case DRM_MODE_BLEND_PIXEL_NONE:
3723                 return PLANE_COLOR_ALPHA_DISABLE;
3724         case DRM_MODE_BLEND_PREMULTI:
3725                 return PLANE_COLOR_ALPHA_SW_PREMULTIPLY;
3726         case DRM_MODE_BLEND_COVERAGE:
3727                 return PLANE_COLOR_ALPHA_HW_PREMULTIPLY;
3728         default:
3729                 MISSING_CASE(plane_state->base.pixel_blend_mode);
3730                 return PLANE_COLOR_ALPHA_DISABLE;
3731         }
3732 }
3733
3734 static u32 skl_plane_ctl_tiling(u64 fb_modifier)
3735 {
3736         switch (fb_modifier) {
3737         case DRM_FORMAT_MOD_LINEAR:
3738                 break;
3739         case I915_FORMAT_MOD_X_TILED:
3740                 return PLANE_CTL_TILED_X;
3741         case I915_FORMAT_MOD_Y_TILED:
3742                 return PLANE_CTL_TILED_Y;
3743         case I915_FORMAT_MOD_Y_TILED_CCS:
3744                 return PLANE_CTL_TILED_Y | PLANE_CTL_RENDER_DECOMPRESSION_ENABLE;
3745         case I915_FORMAT_MOD_Yf_TILED:
3746                 return PLANE_CTL_TILED_YF;
3747         case I915_FORMAT_MOD_Yf_TILED_CCS:
3748                 return PLANE_CTL_TILED_YF | PLANE_CTL_RENDER_DECOMPRESSION_ENABLE;
3749         default:
3750                 MISSING_CASE(fb_modifier);
3751         }
3752
3753         return 0;
3754 }
3755
3756 static u32 skl_plane_ctl_rotate(unsigned int rotate)
3757 {
3758         switch (rotate) {
3759         case DRM_MODE_ROTATE_0:
3760                 break;
3761         /*
3762          * DRM_MODE_ROTATE_ is counter clockwise to stay compatible with Xrandr
3763          * while i915 HW rotation is clockwise, thats why this swapping.
3764          */
3765         case DRM_MODE_ROTATE_90:
3766                 return PLANE_CTL_ROTATE_270;
3767         case DRM_MODE_ROTATE_180:
3768                 return PLANE_CTL_ROTATE_180;
3769         case DRM_MODE_ROTATE_270:
3770                 return PLANE_CTL_ROTATE_90;
3771         default:
3772                 MISSING_CASE(rotate);
3773         }
3774
3775         return 0;
3776 }
3777
3778 static u32 cnl_plane_ctl_flip(unsigned int reflect)
3779 {
3780         switch (reflect) {
3781         case 0:
3782                 break;
3783         case DRM_MODE_REFLECT_X:
3784                 return PLANE_CTL_FLIP_HORIZONTAL;
3785         case DRM_MODE_REFLECT_Y:
3786         default:
3787                 MISSING_CASE(reflect);
3788         }
3789
3790         return 0;
3791 }
3792
3793 u32 skl_plane_ctl_crtc(const struct intel_crtc_state *crtc_state)
3794 {
3795         struct drm_i915_private *dev_priv = to_i915(crtc_state->base.crtc->dev);
3796         u32 plane_ctl = 0;
3797
3798         if (INTEL_GEN(dev_priv) >= 10 || IS_GEMINILAKE(dev_priv))
3799                 return plane_ctl;
3800
3801         if (crtc_state->gamma_enable)
3802                 plane_ctl |= PLANE_CTL_PIPE_GAMMA_ENABLE;
3803
3804         if (crtc_state->csc_enable)
3805                 plane_ctl |= PLANE_CTL_PIPE_CSC_ENABLE;
3806
3807         return plane_ctl;
3808 }
3809
3810 u32 skl_plane_ctl(const struct intel_crtc_state *crtc_state,
3811                   const struct intel_plane_state *plane_state)
3812 {
3813         struct drm_i915_private *dev_priv =
3814                 to_i915(plane_state->base.plane->dev);
3815         const struct drm_framebuffer *fb = plane_state->base.fb;
3816         unsigned int rotation = plane_state->base.rotation;
3817         const struct drm_intel_sprite_colorkey *key = &plane_state->ckey;
3818         u32 plane_ctl;
3819
3820         plane_ctl = PLANE_CTL_ENABLE;
3821
3822         if (INTEL_GEN(dev_priv) < 10 && !IS_GEMINILAKE(dev_priv)) {
3823                 plane_ctl |= skl_plane_ctl_alpha(plane_state);
3824                 plane_ctl |= PLANE_CTL_PLANE_GAMMA_DISABLE;
3825
3826                 if (plane_state->base.color_encoding == DRM_COLOR_YCBCR_BT709)
3827                         plane_ctl |= PLANE_CTL_YUV_TO_RGB_CSC_FORMAT_BT709;
3828
3829                 if (plane_state->base.color_range == DRM_COLOR_YCBCR_FULL_RANGE)
3830                         plane_ctl |= PLANE_CTL_YUV_RANGE_CORRECTION_DISABLE;
3831         }
3832
3833         plane_ctl |= skl_plane_ctl_format(fb->format->format);
3834         plane_ctl |= skl_plane_ctl_tiling(fb->modifier);
3835         plane_ctl |= skl_plane_ctl_rotate(rotation & DRM_MODE_ROTATE_MASK);
3836
3837         if (INTEL_GEN(dev_priv) >= 10)
3838                 plane_ctl |= cnl_plane_ctl_flip(rotation &
3839                                                 DRM_MODE_REFLECT_MASK);
3840
3841         if (key->flags & I915_SET_COLORKEY_DESTINATION)
3842                 plane_ctl |= PLANE_CTL_KEY_ENABLE_DESTINATION;
3843         else if (key->flags & I915_SET_COLORKEY_SOURCE)
3844                 plane_ctl |= PLANE_CTL_KEY_ENABLE_SOURCE;
3845
3846         return plane_ctl;
3847 }
3848
3849 u32 glk_plane_color_ctl_crtc(const struct intel_crtc_state *crtc_state)
3850 {
3851         struct drm_i915_private *dev_priv = to_i915(crtc_state->base.crtc->dev);
3852         u32 plane_color_ctl = 0;
3853
3854         if (INTEL_GEN(dev_priv) >= 11)
3855                 return plane_color_ctl;
3856
3857         if (crtc_state->gamma_enable)
3858                 plane_color_ctl |= PLANE_COLOR_PIPE_GAMMA_ENABLE;
3859
3860         if (crtc_state->csc_enable)
3861                 plane_color_ctl |= PLANE_COLOR_PIPE_CSC_ENABLE;
3862
3863         return plane_color_ctl;
3864 }
3865
3866 u32 glk_plane_color_ctl(const struct intel_crtc_state *crtc_state,
3867                         const struct intel_plane_state *plane_state)
3868 {
3869         struct drm_i915_private *dev_priv =
3870                 to_i915(plane_state->base.plane->dev);
3871         const struct drm_framebuffer *fb = plane_state->base.fb;
3872         struct intel_plane *plane = to_intel_plane(plane_state->base.plane);
3873         u32 plane_color_ctl = 0;
3874
3875         plane_color_ctl |= PLANE_COLOR_PLANE_GAMMA_DISABLE;
3876         plane_color_ctl |= glk_plane_color_ctl_alpha(plane_state);
3877
3878         if (fb->format->is_yuv && !icl_is_hdr_plane(dev_priv, plane->id)) {
3879                 if (plane_state->base.color_encoding == DRM_COLOR_YCBCR_BT709)
3880                         plane_color_ctl |= PLANE_COLOR_CSC_MODE_YUV709_TO_RGB709;
3881                 else
3882                         plane_color_ctl |= PLANE_COLOR_CSC_MODE_YUV601_TO_RGB709;
3883
3884                 if (plane_state->base.color_range == DRM_COLOR_YCBCR_FULL_RANGE)
3885                         plane_color_ctl |= PLANE_COLOR_YUV_RANGE_CORRECTION_DISABLE;
3886         } else if (fb->format->is_yuv) {
3887                 plane_color_ctl |= PLANE_COLOR_INPUT_CSC_ENABLE;
3888         }
3889
3890         return plane_color_ctl;
3891 }
3892
3893 static int
3894 __intel_display_resume(struct drm_device *dev,
3895                        struct drm_atomic_state *state,
3896                        struct drm_modeset_acquire_ctx *ctx)
3897 {
3898         struct drm_crtc_state *crtc_state;
3899         struct drm_crtc *crtc;
3900         int i, ret;
3901
3902         intel_modeset_setup_hw_state(dev, ctx);
3903         i915_redisable_vga(to_i915(dev));
3904
3905         if (!state)
3906                 return 0;
3907
3908         /*
3909          * We've duplicated the state, pointers to the old state are invalid.
3910          *
3911          * Don't attempt to use the old state until we commit the duplicated state.
3912          */
3913         for_each_new_crtc_in_state(state, crtc, crtc_state, i) {
3914                 /*
3915                  * Force recalculation even if we restore
3916                  * current state. With fast modeset this may not result
3917                  * in a modeset when the state is compatible.
3918                  */
3919                 crtc_state->mode_changed = true;
3920         }
3921
3922         /* ignore any reset values/BIOS leftovers in the WM registers */
3923         if (!HAS_GMCH(to_i915(dev)))
3924                 to_intel_atomic_state(state)->skip_intermediate_wm = true;
3925
3926         ret = drm_atomic_helper_commit_duplicated_state(state, ctx);
3927
3928         WARN_ON(ret == -EDEADLK);
3929         return ret;
3930 }
3931
3932 static bool gpu_reset_clobbers_display(struct drm_i915_private *dev_priv)
3933 {
3934         return (INTEL_INFO(dev_priv)->gpu_reset_clobbers_display &&
3935                 intel_has_gpu_reset(dev_priv));
3936 }
3937
3938 void intel_prepare_reset(struct drm_i915_private *dev_priv)
3939 {
3940         struct drm_device *dev = &dev_priv->drm;
3941         struct drm_modeset_acquire_ctx *ctx = &dev_priv->reset_ctx;
3942         struct drm_atomic_state *state;
3943         int ret;
3944
3945         /* reset doesn't touch the display */
3946         if (!i915_modparams.force_reset_modeset_test &&
3947             !gpu_reset_clobbers_display(dev_priv))
3948                 return;
3949
3950         /* We have a modeset vs reset deadlock, defensively unbreak it. */
3951         set_bit(I915_RESET_MODESET, &dev_priv->gpu_error.flags);
3952         wake_up_all(&dev_priv->gpu_error.wait_queue);
3953
3954         if (atomic_read(&dev_priv->gpu_error.pending_fb_pin)) {
3955                 DRM_DEBUG_KMS("Modeset potentially stuck, unbreaking through wedging\n");
3956                 i915_gem_set_wedged(dev_priv);
3957         }
3958
3959         /*
3960          * Need mode_config.mutex so that we don't
3961          * trample ongoing ->detect() and whatnot.
3962          */
3963         mutex_lock(&dev->mode_config.mutex);
3964         drm_modeset_acquire_init(ctx, 0);
3965         while (1) {
3966                 ret = drm_modeset_lock_all_ctx(dev, ctx);
3967                 if (ret != -EDEADLK)
3968                         break;
3969
3970                 drm_modeset_backoff(ctx);
3971         }
3972         /*
3973          * Disabling the crtcs gracefully seems nicer. Also the
3974          * g33 docs say we should at least disable all the planes.
3975          */
3976         state = drm_atomic_helper_duplicate_state(dev, ctx);
3977         if (IS_ERR(state)) {
3978                 ret = PTR_ERR(state);
3979                 DRM_ERROR("Duplicating state failed with %i\n", ret);
3980                 return;
3981         }
3982
3983         ret = drm_atomic_helper_disable_all(dev, ctx);
3984         if (ret) {
3985                 DRM_ERROR("Suspending crtc's failed with %i\n", ret);
3986                 drm_atomic_state_put(state);
3987                 return;
3988         }
3989
3990         dev_priv->modeset_restore_state = state;
3991         state->acquire_ctx = ctx;
3992 }
3993
3994 void intel_finish_reset(struct drm_i915_private *dev_priv)
3995 {
3996         struct drm_device *dev = &dev_priv->drm;
3997         struct drm_modeset_acquire_ctx *ctx = &dev_priv->reset_ctx;
3998         struct drm_atomic_state *state;
3999         int ret;
4000
4001         /* reset doesn't touch the display */
4002         if (!test_bit(I915_RESET_MODESET, &dev_priv->gpu_error.flags))
4003                 return;
4004
4005         state = fetch_and_zero(&dev_priv->modeset_restore_state);
4006         if (!state)
4007                 goto unlock;
4008
4009         /* reset doesn't touch the display */
4010         if (!gpu_reset_clobbers_display(dev_priv)) {
4011                 /* for testing only restore the display */
4012                 ret = __intel_display_resume(dev, state, ctx);
4013                 if (ret)
4014                         DRM_ERROR("Restoring old state failed with %i\n", ret);
4015         } else {
4016                 /*
4017                  * The display has been reset as well,
4018                  * so need a full re-initialization.
4019                  */
4020                 intel_pps_unlock_regs_wa(dev_priv);
4021                 intel_modeset_init_hw(dev);
4022                 intel_init_clock_gating(dev_priv);
4023
4024                 spin_lock_irq(&dev_priv->irq_lock);
4025                 if (dev_priv->display.hpd_irq_setup)
4026                         dev_priv->display.hpd_irq_setup(dev_priv);
4027                 spin_unlock_irq(&dev_priv->irq_lock);
4028
4029                 ret = __intel_display_resume(dev, state, ctx);
4030                 if (ret)
4031                         DRM_ERROR("Restoring old state failed with %i\n", ret);
4032
4033                 intel_hpd_init(dev_priv);
4034         }
4035
4036         drm_atomic_state_put(state);
4037 unlock:
4038         drm_modeset_drop_locks(ctx);
4039         drm_modeset_acquire_fini(ctx);
4040         mutex_unlock(&dev->mode_config.mutex);
4041
4042         clear_bit(I915_RESET_MODESET, &dev_priv->gpu_error.flags);
4043 }
4044
4045 static void icl_set_pipe_chicken(struct intel_crtc *crtc)
4046 {
4047         struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
4048         enum pipe pipe = crtc->pipe;
4049         u32 tmp;
4050
4051         tmp = I915_READ(PIPE_CHICKEN(pipe));
4052
4053         /*
4054          * Display WA #1153: icl
4055          * enable hardware to bypass the alpha math
4056          * and rounding for per-pixel values 00 and 0xff
4057          */
4058         tmp |= PER_PIXEL_ALPHA_BYPASS_EN;
4059         /*
4060          * Display WA # 1605353570: icl
4061          * Set the pixel rounding bit to 1 for allowing
4062          * passthrough of Frame buffer pixels unmodified
4063          * across pipe
4064          */
4065         tmp |= PIXEL_ROUNDING_TRUNC_FB_PASSTHRU;
4066         I915_WRITE(PIPE_CHICKEN(pipe), tmp);
4067 }
4068
4069 static void intel_update_pipe_config(const struct intel_crtc_state *old_crtc_state,
4070                                      const struct intel_crtc_state *new_crtc_state)
4071 {
4072         struct intel_crtc *crtc = to_intel_crtc(new_crtc_state->base.crtc);
4073         struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
4074
4075         /* drm_atomic_helper_update_legacy_modeset_state might not be called. */
4076         crtc->base.mode = new_crtc_state->base.mode;
4077
4078         /*
4079          * Update pipe size and adjust fitter if needed: the reason for this is
4080          * that in compute_mode_changes we check the native mode (not the pfit
4081          * mode) to see if we can flip rather than do a full mode set. In the
4082          * fastboot case, we'll flip, but if we don't update the pipesrc and
4083          * pfit state, we'll end up with a big fb scanned out into the wrong
4084          * sized surface.
4085          */
4086
4087         I915_WRITE(PIPESRC(crtc->pipe),
4088                    ((new_crtc_state->pipe_src_w - 1) << 16) |
4089                    (new_crtc_state->pipe_src_h - 1));
4090
4091         /* on skylake this is done by detaching scalers */
4092         if (INTEL_GEN(dev_priv) >= 9) {
4093                 skl_detach_scalers(new_crtc_state);
4094
4095                 if (new_crtc_state->pch_pfit.enabled)
4096                         skylake_pfit_enable(new_crtc_state);
4097         } else if (HAS_PCH_SPLIT(dev_priv)) {
4098                 if (new_crtc_state->pch_pfit.enabled)
4099                         ironlake_pfit_enable(new_crtc_state);
4100                 else if (old_crtc_state->pch_pfit.enabled)
4101                         ironlake_pfit_disable(old_crtc_state);
4102         }
4103
4104         if (INTEL_GEN(dev_priv) >= 11)
4105                 icl_set_pipe_chicken(crtc);
4106 }
4107
4108 static void intel_fdi_normal_train(struct intel_crtc *crtc)
4109 {
4110         struct drm_device *dev = crtc->base.dev;
4111         struct drm_i915_private *dev_priv = to_i915(dev);
4112         int pipe = crtc->pipe;
4113         i915_reg_t reg;
4114         u32 temp;
4115
4116         /* enable normal train */
4117         reg = FDI_TX_CTL(pipe);
4118         temp = I915_READ(reg);
4119         if (IS_IVYBRIDGE(dev_priv)) {
4120                 temp &= ~FDI_LINK_TRAIN_NONE_IVB;
4121                 temp |= FDI_LINK_TRAIN_NONE_IVB | FDI_TX_ENHANCE_FRAME_ENABLE;
4122         } else {
4123                 temp &= ~FDI_LINK_TRAIN_NONE;
4124                 temp |= FDI_LINK_TRAIN_NONE | FDI_TX_ENHANCE_FRAME_ENABLE;
4125         }
4126         I915_WRITE(reg, temp);
4127
4128         reg = FDI_RX_CTL(pipe);
4129         temp = I915_READ(reg);
4130         if (HAS_PCH_CPT(dev_priv)) {
4131                 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
4132                 temp |= FDI_LINK_TRAIN_NORMAL_CPT;
4133         } else {
4134                 temp &= ~FDI_LINK_TRAIN_NONE;
4135                 temp |= FDI_LINK_TRAIN_NONE;
4136         }
4137         I915_WRITE(reg, temp | FDI_RX_ENHANCE_FRAME_ENABLE);
4138
4139         /* wait one idle pattern time */
4140         POSTING_READ(reg);
4141         udelay(1000);
4142
4143         /* IVB wants error correction enabled */
4144         if (IS_IVYBRIDGE(dev_priv))
4145                 I915_WRITE(reg, I915_READ(reg) | FDI_FS_ERRC_ENABLE |
4146                            FDI_FE_ERRC_ENABLE);
4147 }
4148
4149 /* The FDI link training functions for ILK/Ibexpeak. */
4150 static void ironlake_fdi_link_train(struct intel_crtc *crtc,
4151                                     const struct intel_crtc_state *crtc_state)
4152 {
4153         struct drm_device *dev = crtc->base.dev;
4154         struct drm_i915_private *dev_priv = to_i915(dev);
4155         int pipe = crtc->pipe;
4156         i915_reg_t reg;
4157         u32 temp, tries;
4158
4159         /* FDI needs bits from pipe first */
4160         assert_pipe_enabled(dev_priv, pipe);
4161
4162         /* Train 1: umask FDI RX Interrupt symbol_lock and bit_lock bit
4163            for train result */
4164         reg = FDI_RX_IMR(pipe);
4165         temp = I915_READ(reg);
4166         temp &= ~FDI_RX_SYMBOL_LOCK;
4167         temp &= ~FDI_RX_BIT_LOCK;
4168         I915_WRITE(reg, temp);
4169         I915_READ(reg);
4170         udelay(150);
4171
4172         /* enable CPU FDI TX and PCH FDI RX */
4173         reg = FDI_TX_CTL(pipe);
4174         temp = I915_READ(reg);
4175         temp &= ~FDI_DP_PORT_WIDTH_MASK;
4176         temp |= FDI_DP_PORT_WIDTH(crtc_state->fdi_lanes);
4177         temp &= ~FDI_LINK_TRAIN_NONE;
4178         temp |= FDI_LINK_TRAIN_PATTERN_1;
4179         I915_WRITE(reg, temp | FDI_TX_ENABLE);
4180
4181         reg = FDI_RX_CTL(pipe);
4182         temp = I915_READ(reg);
4183         temp &= ~FDI_LINK_TRAIN_NONE;
4184         temp |= FDI_LINK_TRAIN_PATTERN_1;
4185         I915_WRITE(reg, temp | FDI_RX_ENABLE);
4186
4187         POSTING_READ(reg);
4188         udelay(150);
4189
4190         /* Ironlake workaround, enable clock pointer after FDI enable*/
4191         I915_WRITE(FDI_RX_CHICKEN(pipe), FDI_RX_PHASE_SYNC_POINTER_OVR);
4192         I915_WRITE(FDI_RX_CHICKEN(pipe), FDI_RX_PHASE_SYNC_POINTER_OVR |
4193                    FDI_RX_PHASE_SYNC_POINTER_EN);
4194
4195         reg = FDI_RX_IIR(pipe);
4196         for (tries = 0; tries < 5; tries++) {
4197                 temp = I915_READ(reg);
4198                 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
4199
4200                 if ((temp & FDI_RX_BIT_LOCK)) {
4201                         DRM_DEBUG_KMS("FDI train 1 done.\n");
4202                         I915_WRITE(reg, temp | FDI_RX_BIT_LOCK);
4203                         break;
4204                 }
4205         }
4206         if (tries == 5)
4207                 DRM_ERROR("FDI train 1 fail!\n");
4208
4209         /* Train 2 */
4210         reg = FDI_TX_CTL(pipe);
4211         temp = I915_READ(reg);
4212         temp &= ~FDI_LINK_TRAIN_NONE;
4213         temp |= FDI_LINK_TRAIN_PATTERN_2;
4214         I915_WRITE(reg, temp);
4215
4216         reg = FDI_RX_CTL(pipe);
4217         temp = I915_READ(reg);
4218         temp &= ~FDI_LINK_TRAIN_NONE;
4219         temp |= FDI_LINK_TRAIN_PATTERN_2;
4220         I915_WRITE(reg, temp);
4221
4222         POSTING_READ(reg);
4223         udelay(150);
4224
4225         reg = FDI_RX_IIR(pipe);
4226         for (tries = 0; tries < 5; tries++) {
4227                 temp = I915_READ(reg);
4228                 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
4229
4230                 if (temp & FDI_RX_SYMBOL_LOCK) {
4231                         I915_WRITE(reg, temp | FDI_RX_SYMBOL_LOCK);
4232                         DRM_DEBUG_KMS("FDI train 2 done.\n");
4233                         break;
4234                 }
4235         }
4236         if (tries == 5)
4237                 DRM_ERROR("FDI train 2 fail!\n");
4238
4239         DRM_DEBUG_KMS("FDI train done\n");
4240
4241 }
4242
4243 static const int snb_b_fdi_train_param[] = {
4244         FDI_LINK_TRAIN_400MV_0DB_SNB_B,
4245         FDI_LINK_TRAIN_400MV_6DB_SNB_B,
4246         FDI_LINK_TRAIN_600MV_3_5DB_SNB_B,
4247         FDI_LINK_TRAIN_800MV_0DB_SNB_B,
4248 };
4249
4250 /* The FDI link training functions for SNB/Cougarpoint. */
4251 static void gen6_fdi_link_train(struct intel_crtc *crtc,
4252                                 const struct intel_crtc_state *crtc_state)
4253 {
4254         struct drm_device *dev = crtc->base.dev;
4255         struct drm_i915_private *dev_priv = to_i915(dev);
4256         int pipe = crtc->pipe;
4257         i915_reg_t reg;
4258         u32 temp, i, retry;
4259
4260         /* Train 1: umask FDI RX Interrupt symbol_lock and bit_lock bit
4261            for train result */
4262         reg = FDI_RX_IMR(pipe);
4263         temp = I915_READ(reg);
4264         temp &= ~FDI_RX_SYMBOL_LOCK;
4265         temp &= ~FDI_RX_BIT_LOCK;
4266         I915_WRITE(reg, temp);
4267
4268         POSTING_READ(reg);
4269         udelay(150);
4270
4271         /* enable CPU FDI TX and PCH FDI RX */
4272         reg = FDI_TX_CTL(pipe);
4273         temp = I915_READ(reg);
4274         temp &= ~FDI_DP_PORT_WIDTH_MASK;
4275         temp |= FDI_DP_PORT_WIDTH(crtc_state->fdi_lanes);
4276         temp &= ~FDI_LINK_TRAIN_NONE;
4277         temp |= FDI_LINK_TRAIN_PATTERN_1;
4278         temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
4279         /* SNB-B */
4280         temp |= FDI_LINK_TRAIN_400MV_0DB_SNB_B;
4281         I915_WRITE(reg, temp | FDI_TX_ENABLE);
4282
4283         I915_WRITE(FDI_RX_MISC(pipe),
4284                    FDI_RX_TP1_TO_TP2_48 | FDI_RX_FDI_DELAY_90);
4285
4286         reg = FDI_RX_CTL(pipe);
4287         temp = I915_READ(reg);
4288         if (HAS_PCH_CPT(dev_priv)) {
4289                 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
4290                 temp |= FDI_LINK_TRAIN_PATTERN_1_CPT;
4291         } else {
4292                 temp &= ~FDI_LINK_TRAIN_NONE;
4293                 temp |= FDI_LINK_TRAIN_PATTERN_1;
4294         }
4295         I915_WRITE(reg, temp | FDI_RX_ENABLE);
4296
4297         POSTING_READ(reg);
4298         udelay(150);
4299
4300         for (i = 0; i < 4; i++) {
4301                 reg = FDI_TX_CTL(pipe);
4302                 temp = I915_READ(reg);
4303                 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
4304                 temp |= snb_b_fdi_train_param[i];
4305                 I915_WRITE(reg, temp);
4306
4307                 POSTING_READ(reg);
4308                 udelay(500);
4309
4310                 for (retry = 0; retry < 5; retry++) {
4311                         reg = FDI_RX_IIR(pipe);
4312                         temp = I915_READ(reg);
4313                         DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
4314                         if (temp & FDI_RX_BIT_LOCK) {
4315                                 I915_WRITE(reg, temp | FDI_RX_BIT_LOCK);
4316                                 DRM_DEBUG_KMS("FDI train 1 done.\n");
4317                                 break;
4318                         }
4319                         udelay(50);
4320                 }
4321                 if (retry < 5)
4322                         break;
4323         }
4324         if (i == 4)
4325                 DRM_ERROR("FDI train 1 fail!\n");
4326
4327         /* Train 2 */
4328         reg = FDI_TX_CTL(pipe);
4329         temp = I915_READ(reg);
4330         temp &= ~FDI_LINK_TRAIN_NONE;
4331         temp |= FDI_LINK_TRAIN_PATTERN_2;
4332         if (IS_GEN(dev_priv, 6)) {
4333                 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
4334                 /* SNB-B */
4335                 temp |= FDI_LINK_TRAIN_400MV_0DB_SNB_B;
4336         }
4337         I915_WRITE(reg, temp);
4338
4339         reg = FDI_RX_CTL(pipe);
4340         temp = I915_READ(reg);
4341         if (HAS_PCH_CPT(dev_priv)) {
4342                 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
4343                 temp |= FDI_LINK_TRAIN_PATTERN_2_CPT;
4344         } else {
4345                 temp &= ~FDI_LINK_TRAIN_NONE;
4346                 temp |= FDI_LINK_TRAIN_PATTERN_2;
4347         }
4348         I915_WRITE(reg, temp);
4349
4350         POSTING_READ(reg);
4351         udelay(150);
4352
4353         for (i = 0; i < 4; i++) {
4354                 reg = FDI_TX_CTL(pipe);
4355                 temp = I915_READ(reg);
4356                 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
4357                 temp |= snb_b_fdi_train_param[i];
4358                 I915_WRITE(reg, temp);
4359
4360                 POSTING_READ(reg);
4361                 udelay(500);
4362
4363                 for (retry = 0; retry < 5; retry++) {
4364                         reg = FDI_RX_IIR(pipe);
4365                         temp = I915_READ(reg);
4366                         DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
4367                         if (temp & FDI_RX_SYMBOL_LOCK) {
4368                                 I915_WRITE(reg, temp | FDI_RX_SYMBOL_LOCK);
4369                                 DRM_DEBUG_KMS("FDI train 2 done.\n");
4370                                 break;
4371                         }
4372                         udelay(50);
4373                 }
4374                 if (retry < 5)
4375                         break;
4376         }
4377         if (i == 4)
4378                 DRM_ERROR("FDI train 2 fail!\n");
4379
4380         DRM_DEBUG_KMS("FDI train done.\n");
4381 }
4382
4383 /* Manual link training for Ivy Bridge A0 parts */
4384 static void ivb_manual_fdi_link_train(struct intel_crtc *crtc,
4385                                       const struct intel_crtc_state *crtc_state)
4386 {
4387         struct drm_device *dev = crtc->base.dev;
4388         struct drm_i915_private *dev_priv = to_i915(dev);
4389         int pipe = crtc->pipe;
4390         i915_reg_t reg;
4391         u32 temp, i, j;
4392
4393         /* Train 1: umask FDI RX Interrupt symbol_lock and bit_lock bit
4394            for train result */
4395         reg = FDI_RX_IMR(pipe);
4396         temp = I915_READ(reg);
4397         temp &= ~FDI_RX_SYMBOL_LOCK;
4398         temp &= ~FDI_RX_BIT_LOCK;
4399         I915_WRITE(reg, temp);
4400
4401         POSTING_READ(reg);
4402         udelay(150);
4403
4404         DRM_DEBUG_KMS("FDI_RX_IIR before link train 0x%x\n",
4405                       I915_READ(FDI_RX_IIR(pipe)));
4406
4407         /* Try each vswing and preemphasis setting twice before moving on */
4408         for (j = 0; j < ARRAY_SIZE(snb_b_fdi_train_param) * 2; j++) {
4409                 /* disable first in case we need to retry */
4410                 reg = FDI_TX_CTL(pipe);
4411                 temp = I915_READ(reg);
4412                 temp &= ~(FDI_LINK_TRAIN_AUTO | FDI_LINK_TRAIN_NONE_IVB);
4413                 temp &= ~FDI_TX_ENABLE;
4414                 I915_WRITE(reg, temp);
4415
4416                 reg = FDI_RX_CTL(pipe);
4417                 temp = I915_READ(reg);
4418                 temp &= ~FDI_LINK_TRAIN_AUTO;
4419                 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
4420                 temp &= ~FDI_RX_ENABLE;
4421                 I915_WRITE(reg, temp);
4422
4423                 /* enable CPU FDI TX and PCH FDI RX */
4424                 reg = FDI_TX_CTL(pipe);
4425                 temp = I915_READ(reg);
4426                 temp &= ~FDI_DP_PORT_WIDTH_MASK;
4427                 temp |= FDI_DP_PORT_WIDTH(crtc_state->fdi_lanes);
4428                 temp |= FDI_LINK_TRAIN_PATTERN_1_IVB;
4429                 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
4430                 temp |= snb_b_fdi_train_param[j/2];
4431                 temp |= FDI_COMPOSITE_SYNC;
4432                 I915_WRITE(reg, temp | FDI_TX_ENABLE);
4433
4434                 I915_WRITE(FDI_RX_MISC(pipe),
4435                            FDI_RX_TP1_TO_TP2_48 | FDI_RX_FDI_DELAY_90);
4436
4437                 reg = FDI_RX_CTL(pipe);
4438                 temp = I915_READ(reg);
4439                 temp |= FDI_LINK_TRAIN_PATTERN_1_CPT;
4440                 temp |= FDI_COMPOSITE_SYNC;
4441                 I915_WRITE(reg, temp | FDI_RX_ENABLE);
4442
4443                 POSTING_READ(reg);
4444                 udelay(1); /* should be 0.5us */
4445
4446                 for (i = 0; i < 4; i++) {
4447                         reg = FDI_RX_IIR(pipe);
4448                         temp = I915_READ(reg);
4449                         DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
4450
4451                         if (temp & FDI_RX_BIT_LOCK ||
4452                             (I915_READ(reg) & FDI_RX_BIT_LOCK)) {
4453                                 I915_WRITE(reg, temp | FDI_RX_BIT_LOCK);
4454                                 DRM_DEBUG_KMS("FDI train 1 done, level %i.\n",
4455                                               i);
4456                                 break;
4457                         }
4458                         udelay(1); /* should be 0.5us */
4459                 }
4460                 if (i == 4) {
4461                         DRM_DEBUG_KMS("FDI train 1 fail on vswing %d\n", j / 2);
4462                         continue;
4463                 }
4464
4465                 /* Train 2 */
4466                 reg = FDI_TX_CTL(pipe);
4467                 temp = I915_READ(reg);
4468                 temp &= ~FDI_LINK_TRAIN_NONE_IVB;
4469                 temp |= FDI_LINK_TRAIN_PATTERN_2_IVB;
4470                 I915_WRITE(reg, temp);
4471
4472                 reg = FDI_RX_CTL(pipe);
4473                 temp = I915_READ(reg);
4474                 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
4475                 temp |= FDI_LINK_TRAIN_PATTERN_2_CPT;
4476                 I915_WRITE(reg, temp);
4477
4478                 POSTING_READ(reg);
4479                 udelay(2); /* should be 1.5us */
4480
4481                 for (i = 0; i < 4; i++) {
4482                         reg = FDI_RX_IIR(pipe);
4483                         temp = I915_READ(reg);
4484                         DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
4485
4486                         if (temp & FDI_RX_SYMBOL_LOCK ||
4487                             (I915_READ(reg) & FDI_RX_SYMBOL_LOCK)) {
4488                                 I915_WRITE(reg, temp | FDI_RX_SYMBOL_LOCK);
4489                                 DRM_DEBUG_KMS("FDI train 2 done, level %i.\n",
4490                                               i);
4491                                 goto train_done;
4492                         }
4493                         udelay(2); /* should be 1.5us */
4494                 }
4495                 if (i == 4)
4496                         DRM_DEBUG_KMS("FDI train 2 fail on vswing %d\n", j / 2);
4497         }
4498
4499 train_done:
4500         DRM_DEBUG_KMS("FDI train done.\n");
4501 }
4502
4503 static void ironlake_fdi_pll_enable(const struct intel_crtc_state *crtc_state)
4504 {
4505         struct intel_crtc *intel_crtc = to_intel_crtc(crtc_state->base.crtc);
4506         struct drm_i915_private *dev_priv = to_i915(intel_crtc->base.dev);
4507         int pipe = intel_crtc->pipe;
4508         i915_reg_t reg;
4509         u32 temp;
4510
4511         /* enable PCH FDI RX PLL, wait warmup plus DMI latency */
4512         reg = FDI_RX_CTL(pipe);
4513         temp = I915_READ(reg);
4514         temp &= ~(FDI_DP_PORT_WIDTH_MASK | (0x7 << 16));
4515         temp |= FDI_DP_PORT_WIDTH(crtc_state->fdi_lanes);
4516         temp |= (I915_READ(PIPECONF(pipe)) & PIPECONF_BPC_MASK) << 11;
4517         I915_WRITE(reg, temp | FDI_RX_PLL_ENABLE);
4518
4519         POSTING_READ(reg);
4520         udelay(200);
4521
4522         /* Switch from Rawclk to PCDclk */
4523         temp = I915_READ(reg);
4524         I915_WRITE(reg, temp | FDI_PCDCLK);
4525
4526         POSTING_READ(reg);
4527         udelay(200);
4528
4529         /* Enable CPU FDI TX PLL, always on for Ironlake */
4530         reg = FDI_TX_CTL(pipe);
4531         temp = I915_READ(reg);
4532         if ((temp & FDI_TX_PLL_ENABLE) == 0) {
4533                 I915_WRITE(reg, temp | FDI_TX_PLL_ENABLE);
4534
4535                 POSTING_READ(reg);
4536                 udelay(100);
4537         }
4538 }
4539
4540 static void ironlake_fdi_pll_disable(struct intel_crtc *intel_crtc)
4541 {
4542         struct drm_device *dev = intel_crtc->base.dev;
4543         struct drm_i915_private *dev_priv = to_i915(dev);
4544         int pipe = intel_crtc->pipe;
4545         i915_reg_t reg;
4546         u32 temp;
4547
4548         /* Switch from PCDclk to Rawclk */
4549         reg = FDI_RX_CTL(pipe);
4550         temp = I915_READ(reg);
4551         I915_WRITE(reg, temp & ~FDI_PCDCLK);
4552
4553         /* Disable CPU FDI TX PLL */
4554         reg = FDI_TX_CTL(pipe);
4555         temp = I915_READ(reg);
4556         I915_WRITE(reg, temp & ~FDI_TX_PLL_ENABLE);
4557
4558         POSTING_READ(reg);
4559         udelay(100);
4560
4561         reg = FDI_RX_CTL(pipe);
4562         temp = I915_READ(reg);
4563         I915_WRITE(reg, temp & ~FDI_RX_PLL_ENABLE);
4564
4565         /* Wait for the clocks to turn off. */
4566         POSTING_READ(reg);
4567         udelay(100);
4568 }
4569
4570 static void ironlake_fdi_disable(struct drm_crtc *crtc)
4571 {
4572         struct drm_device *dev = crtc->dev;
4573         struct drm_i915_private *dev_priv = to_i915(dev);
4574         struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4575         int pipe = intel_crtc->pipe;
4576         i915_reg_t reg;
4577         u32 temp;
4578
4579         /* disable CPU FDI tx and PCH FDI rx */
4580         reg = FDI_TX_CTL(pipe);
4581         temp = I915_READ(reg);
4582         I915_WRITE(reg, temp & ~FDI_TX_ENABLE);
4583         POSTING_READ(reg);
4584
4585         reg = FDI_RX_CTL(pipe);
4586         temp = I915_READ(reg);
4587         temp &= ~(0x7 << 16);
4588         temp |= (I915_READ(PIPECONF(pipe)) & PIPECONF_BPC_MASK) << 11;
4589         I915_WRITE(reg, temp & ~FDI_RX_ENABLE);
4590
4591         POSTING_READ(reg);
4592         udelay(100);
4593
4594         /* Ironlake workaround, disable clock pointer after downing FDI */
4595         if (HAS_PCH_IBX(dev_priv))
4596                 I915_WRITE(FDI_RX_CHICKEN(pipe), FDI_RX_PHASE_SYNC_POINTER_OVR);
4597
4598         /* still set train pattern 1 */
4599         reg = FDI_TX_CTL(pipe);
4600         temp = I915_READ(reg);
4601         temp &= ~FDI_LINK_TRAIN_NONE;
4602         temp |= FDI_LINK_TRAIN_PATTERN_1;
4603         I915_WRITE(reg, temp);
4604
4605         reg = FDI_RX_CTL(pipe);
4606         temp = I915_READ(reg);
4607         if (HAS_PCH_CPT(dev_priv)) {
4608                 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
4609                 temp |= FDI_LINK_TRAIN_PATTERN_1_CPT;
4610         } else {
4611                 temp &= ~FDI_LINK_TRAIN_NONE;
4612                 temp |= FDI_LINK_TRAIN_PATTERN_1;
4613         }
4614         /* BPC in FDI rx is consistent with that in PIPECONF */
4615         temp &= ~(0x07 << 16);
4616         temp |= (I915_READ(PIPECONF(pipe)) & PIPECONF_BPC_MASK) << 11;
4617         I915_WRITE(reg, temp);
4618
4619         POSTING_READ(reg);
4620         udelay(100);
4621 }
4622
4623 bool intel_has_pending_fb_unpin(struct drm_i915_private *dev_priv)
4624 {
4625         struct drm_crtc *crtc;
4626         bool cleanup_done;
4627
4628         drm_for_each_crtc(crtc, &dev_priv->drm) {
4629                 struct drm_crtc_commit *commit;
4630                 spin_lock(&crtc->commit_lock);
4631                 commit = list_first_entry_or_null(&crtc->commit_list,
4632                                                   struct drm_crtc_commit, commit_entry);
4633                 cleanup_done = commit ?
4634                         try_wait_for_completion(&commit->cleanup_done) : true;
4635                 spin_unlock(&crtc->commit_lock);
4636
4637                 if (cleanup_done)
4638                         continue;
4639
4640                 drm_crtc_wait_one_vblank(crtc);
4641
4642                 return true;
4643         }
4644
4645         return false;
4646 }
4647
4648 void lpt_disable_iclkip(struct drm_i915_private *dev_priv)
4649 {
4650         u32 temp;
4651
4652         I915_WRITE(PIXCLK_GATE, PIXCLK_GATE_GATE);
4653
4654         mutex_lock(&dev_priv->sb_lock);
4655
4656         temp = intel_sbi_read(dev_priv, SBI_SSCCTL6, SBI_ICLK);
4657         temp |= SBI_SSCCTL_DISABLE;
4658         intel_sbi_write(dev_priv, SBI_SSCCTL6, temp, SBI_ICLK);
4659
4660         mutex_unlock(&dev_priv->sb_lock);
4661 }
4662
4663 /* Program iCLKIP clock to the desired frequency */
4664 static void lpt_program_iclkip(const struct intel_crtc_state *crtc_state)
4665 {
4666         struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
4667         struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
4668         int clock = crtc_state->base.adjusted_mode.crtc_clock;
4669         u32 divsel, phaseinc, auxdiv, phasedir = 0;
4670         u32 temp;
4671
4672         lpt_disable_iclkip(dev_priv);
4673
4674         /* The iCLK virtual clock root frequency is in MHz,
4675          * but the adjusted_mode->crtc_clock in in KHz. To get the
4676          * divisors, it is necessary to divide one by another, so we
4677          * convert the virtual clock precision to KHz here for higher
4678          * precision.
4679          */
4680         for (auxdiv = 0; auxdiv < 2; auxdiv++) {
4681                 u32 iclk_virtual_root_freq = 172800 * 1000;
4682                 u32 iclk_pi_range = 64;
4683                 u32 desired_divisor;
4684
4685                 desired_divisor = DIV_ROUND_CLOSEST(iclk_virtual_root_freq,
4686                                                     clock << auxdiv);
4687                 divsel = (desired_divisor / iclk_pi_range) - 2;
4688                 phaseinc = desired_divisor % iclk_pi_range;
4689
4690                 /*
4691                  * Near 20MHz is a corner case which is
4692                  * out of range for the 7-bit divisor
4693                  */
4694                 if (divsel <= 0x7f)
4695                         break;
4696         }
4697
4698         /* This should not happen with any sane values */
4699         WARN_ON(SBI_SSCDIVINTPHASE_DIVSEL(divsel) &
4700                 ~SBI_SSCDIVINTPHASE_DIVSEL_MASK);
4701         WARN_ON(SBI_SSCDIVINTPHASE_DIR(phasedir) &
4702                 ~SBI_SSCDIVINTPHASE_INCVAL_MASK);
4703
4704         DRM_DEBUG_KMS("iCLKIP clock: found settings for %dKHz refresh rate: auxdiv=%x, divsel=%x, phasedir=%x, phaseinc=%x\n",
4705                         clock,
4706                         auxdiv,
4707                         divsel,
4708                         phasedir,
4709                         phaseinc);
4710
4711         mutex_lock(&dev_priv->sb_lock);
4712
4713         /* Program SSCDIVINTPHASE6 */
4714         temp = intel_sbi_read(dev_priv, SBI_SSCDIVINTPHASE6, SBI_ICLK);
4715         temp &= ~SBI_SSCDIVINTPHASE_DIVSEL_MASK;
4716         temp |= SBI_SSCDIVINTPHASE_DIVSEL(divsel);
4717         temp &= ~SBI_SSCDIVINTPHASE_INCVAL_MASK;
4718         temp |= SBI_SSCDIVINTPHASE_INCVAL(phaseinc);
4719         temp |= SBI_SSCDIVINTPHASE_DIR(phasedir);
4720         temp |= SBI_SSCDIVINTPHASE_PROPAGATE;
4721         intel_sbi_write(dev_priv, SBI_SSCDIVINTPHASE6, temp, SBI_ICLK);
4722
4723         /* Program SSCAUXDIV */
4724         temp = intel_sbi_read(dev_priv, SBI_SSCAUXDIV6, SBI_ICLK);
4725         temp &= ~SBI_SSCAUXDIV_FINALDIV2SEL(1);
4726         temp |= SBI_SSCAUXDIV_FINALDIV2SEL(auxdiv);
4727         intel_sbi_write(dev_priv, SBI_SSCAUXDIV6, temp, SBI_ICLK);
4728
4729         /* Enable modulator and associated divider */
4730         temp = intel_sbi_read(dev_priv, SBI_SSCCTL6, SBI_ICLK);
4731         temp &= ~SBI_SSCCTL_DISABLE;
4732         intel_sbi_write(dev_priv, SBI_SSCCTL6, temp, SBI_ICLK);
4733
4734         mutex_unlock(&dev_priv->sb_lock);
4735
4736         /* Wait for initialization time */
4737         udelay(24);
4738
4739         I915_WRITE(PIXCLK_GATE, PIXCLK_GATE_UNGATE);
4740 }
4741
4742 int lpt_get_iclkip(struct drm_i915_private *dev_priv)
4743 {
4744         u32 divsel, phaseinc, auxdiv;
4745         u32 iclk_virtual_root_freq = 172800 * 1000;
4746         u32 iclk_pi_range = 64;
4747         u32 desired_divisor;
4748         u32 temp;
4749
4750         if ((I915_READ(PIXCLK_GATE) & PIXCLK_GATE_UNGATE) == 0)
4751                 return 0;
4752
4753         mutex_lock(&dev_priv->sb_lock);
4754
4755         temp = intel_sbi_read(dev_priv, SBI_SSCCTL6, SBI_ICLK);
4756         if (temp & SBI_SSCCTL_DISABLE) {
4757                 mutex_unlock(&dev_priv->sb_lock);
4758                 return 0;
4759         }
4760
4761         temp = intel_sbi_read(dev_priv, SBI_SSCDIVINTPHASE6, SBI_ICLK);
4762         divsel = (temp & SBI_SSCDIVINTPHASE_DIVSEL_MASK) >>
4763                 SBI_SSCDIVINTPHASE_DIVSEL_SHIFT;
4764         phaseinc = (temp & SBI_SSCDIVINTPHASE_INCVAL_MASK) >>
4765                 SBI_SSCDIVINTPHASE_INCVAL_SHIFT;
4766
4767         temp = intel_sbi_read(dev_priv, SBI_SSCAUXDIV6, SBI_ICLK);
4768         auxdiv = (temp & SBI_SSCAUXDIV_FINALDIV2SEL_MASK) >>
4769                 SBI_SSCAUXDIV_FINALDIV2SEL_SHIFT;
4770
4771         mutex_unlock(&dev_priv->sb_lock);
4772
4773         desired_divisor = (divsel + 2) * iclk_pi_range + phaseinc;
4774
4775         return DIV_ROUND_CLOSEST(iclk_virtual_root_freq,
4776                                  desired_divisor << auxdiv);
4777 }
4778
4779 static void ironlake_pch_transcoder_set_timings(const struct intel_crtc_state *crtc_state,
4780                                                 enum pipe pch_transcoder)
4781 {
4782         struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
4783         struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
4784         enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
4785
4786         I915_WRITE(PCH_TRANS_HTOTAL(pch_transcoder),
4787                    I915_READ(HTOTAL(cpu_transcoder)));
4788         I915_WRITE(PCH_TRANS_HBLANK(pch_transcoder),
4789                    I915_READ(HBLANK(cpu_transcoder)));
4790         I915_WRITE(PCH_TRANS_HSYNC(pch_transcoder),
4791                    I915_READ(HSYNC(cpu_transcoder)));
4792
4793         I915_WRITE(PCH_TRANS_VTOTAL(pch_transcoder),
4794                    I915_READ(VTOTAL(cpu_transcoder)));
4795         I915_WRITE(PCH_TRANS_VBLANK(pch_transcoder),
4796                    I915_READ(VBLANK(cpu_transcoder)));
4797         I915_WRITE(PCH_TRANS_VSYNC(pch_transcoder),
4798                    I915_READ(VSYNC(cpu_transcoder)));
4799         I915_WRITE(PCH_TRANS_VSYNCSHIFT(pch_transcoder),
4800                    I915_READ(VSYNCSHIFT(cpu_transcoder)));
4801 }
4802
4803 static void cpt_set_fdi_bc_bifurcation(struct drm_i915_private *dev_priv, bool enable)
4804 {
4805         u32 temp;
4806
4807         temp = I915_READ(SOUTH_CHICKEN1);
4808         if (!!(temp & FDI_BC_BIFURCATION_SELECT) == enable)
4809                 return;
4810
4811         WARN_ON(I915_READ(FDI_RX_CTL(PIPE_B)) & FDI_RX_ENABLE);
4812         WARN_ON(I915_READ(FDI_RX_CTL(PIPE_C)) & FDI_RX_ENABLE);
4813
4814         temp &= ~FDI_BC_BIFURCATION_SELECT;
4815         if (enable)
4816                 temp |= FDI_BC_BIFURCATION_SELECT;
4817
4818         DRM_DEBUG_KMS("%sabling fdi C rx\n", enable ? "en" : "dis");
4819         I915_WRITE(SOUTH_CHICKEN1, temp);
4820         POSTING_READ(SOUTH_CHICKEN1);
4821 }
4822
4823 static void ivybridge_update_fdi_bc_bifurcation(const struct intel_crtc_state *crtc_state)
4824 {
4825         struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
4826         struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
4827
4828         switch (crtc->pipe) {
4829         case PIPE_A:
4830                 break;
4831         case PIPE_B:
4832                 if (crtc_state->fdi_lanes > 2)
4833                         cpt_set_fdi_bc_bifurcation(dev_priv, false);
4834                 else
4835                         cpt_set_fdi_bc_bifurcation(dev_priv, true);
4836
4837                 break;
4838         case PIPE_C:
4839                 cpt_set_fdi_bc_bifurcation(dev_priv, true);
4840
4841                 break;
4842         default:
4843                 BUG();
4844         }
4845 }
4846
4847 /*
4848  * Finds the encoder associated with the given CRTC. This can only be
4849  * used when we know that the CRTC isn't feeding multiple encoders!
4850  */
4851 static struct intel_encoder *
4852 intel_get_crtc_new_encoder(const struct intel_atomic_state *state,
4853                            const struct intel_crtc_state *crtc_state)
4854 {
4855         struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
4856         const struct drm_connector_state *connector_state;
4857         const struct drm_connector *connector;
4858         struct intel_encoder *encoder = NULL;
4859         int num_encoders = 0;
4860         int i;
4861
4862         for_each_new_connector_in_state(&state->base, connector, connector_state, i) {
4863                 if (connector_state->crtc != &crtc->base)
4864                         continue;
4865
4866                 encoder = to_intel_encoder(connector_state->best_encoder);
4867                 num_encoders++;
4868         }
4869
4870         WARN(num_encoders != 1, "%d encoders for pipe %c\n",
4871              num_encoders, pipe_name(crtc->pipe));
4872
4873         return encoder;
4874 }
4875
4876 /*
4877  * Enable PCH resources required for PCH ports:
4878  *   - PCH PLLs
4879  *   - FDI training & RX/TX
4880  *   - update transcoder timings
4881  *   - DP transcoding bits
4882  *   - transcoder
4883  */
4884 static void ironlake_pch_enable(const struct intel_atomic_state *state,
4885                                 const struct intel_crtc_state *crtc_state)
4886 {
4887         struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
4888         struct drm_device *dev = crtc->base.dev;
4889         struct drm_i915_private *dev_priv = to_i915(dev);
4890         int pipe = crtc->pipe;
4891         u32 temp;
4892
4893         assert_pch_transcoder_disabled(dev_priv, pipe);
4894
4895         if (IS_IVYBRIDGE(dev_priv))
4896                 ivybridge_update_fdi_bc_bifurcation(crtc_state);
4897
4898         /* Write the TU size bits before fdi link training, so that error
4899          * detection works. */
4900         I915_WRITE(FDI_RX_TUSIZE1(pipe),
4901                    I915_READ(PIPE_DATA_M1(pipe)) & TU_SIZE_MASK);
4902
4903         /* For PCH output, training FDI link */
4904         dev_priv->display.fdi_link_train(crtc, crtc_state);
4905
4906         /* We need to program the right clock selection before writing the pixel
4907          * mutliplier into the DPLL. */
4908         if (HAS_PCH_CPT(dev_priv)) {
4909                 u32 sel;
4910
4911                 temp = I915_READ(PCH_DPLL_SEL);
4912                 temp |= TRANS_DPLL_ENABLE(pipe);
4913                 sel = TRANS_DPLLB_SEL(pipe);
4914                 if (crtc_state->shared_dpll ==
4915                     intel_get_shared_dpll_by_id(dev_priv, DPLL_ID_PCH_PLL_B))
4916                         temp |= sel;
4917                 else
4918                         temp &= ~sel;
4919                 I915_WRITE(PCH_DPLL_SEL, temp);
4920         }
4921
4922         /* XXX: pch pll's can be enabled any time before we enable the PCH
4923          * transcoder, and we actually should do this to not upset any PCH
4924          * transcoder that already use the clock when we share it.
4925          *
4926          * Note that enable_shared_dpll tries to do the right thing, but
4927          * get_shared_dpll unconditionally resets the pll - we need that to have
4928          * the right LVDS enable sequence. */
4929         intel_enable_shared_dpll(crtc_state);
4930
4931         /* set transcoder timing, panel must allow it */
4932         assert_panel_unlocked(dev_priv, pipe);
4933         ironlake_pch_transcoder_set_timings(crtc_state, pipe);
4934
4935         intel_fdi_normal_train(crtc);
4936
4937         /* For PCH DP, enable TRANS_DP_CTL */
4938         if (HAS_PCH_CPT(dev_priv) &&
4939             intel_crtc_has_dp_encoder(crtc_state)) {
4940                 const struct drm_display_mode *adjusted_mode =
4941                         &crtc_state->base.adjusted_mode;
4942                 u32 bpc = (I915_READ(PIPECONF(pipe)) & PIPECONF_BPC_MASK) >> 5;
4943                 i915_reg_t reg = TRANS_DP_CTL(pipe);
4944                 enum port port;
4945
4946                 temp = I915_READ(reg);
4947                 temp &= ~(TRANS_DP_PORT_SEL_MASK |
4948                           TRANS_DP_SYNC_MASK |
4949                           TRANS_DP_BPC_MASK);
4950                 temp |= TRANS_DP_OUTPUT_ENABLE;
4951                 temp |= bpc << 9; /* same format but at 11:9 */
4952
4953                 if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC)
4954                         temp |= TRANS_DP_HSYNC_ACTIVE_HIGH;
4955                 if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC)
4956                         temp |= TRANS_DP_VSYNC_ACTIVE_HIGH;
4957
4958                 port = intel_get_crtc_new_encoder(state, crtc_state)->port;
4959                 WARN_ON(port < PORT_B || port > PORT_D);
4960                 temp |= TRANS_DP_PORT_SEL(port);
4961
4962                 I915_WRITE(reg, temp);
4963         }
4964
4965         ironlake_enable_pch_transcoder(crtc_state);
4966 }
4967
4968 static void lpt_pch_enable(const struct intel_atomic_state *state,
4969                            const struct intel_crtc_state *crtc_state)
4970 {
4971         struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
4972         struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
4973         enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
4974
4975         assert_pch_transcoder_disabled(dev_priv, PIPE_A);
4976
4977         lpt_program_iclkip(crtc_state);
4978
4979         /* Set transcoder timing. */
4980         ironlake_pch_transcoder_set_timings(crtc_state, PIPE_A);
4981
4982         lpt_enable_pch_transcoder(dev_priv, cpu_transcoder);
4983 }
4984
4985 static void cpt_verify_modeset(struct drm_device *dev, int pipe)
4986 {
4987         struct drm_i915_private *dev_priv = to_i915(dev);
4988         i915_reg_t dslreg = PIPEDSL(pipe);
4989         u32 temp;
4990
4991         temp = I915_READ(dslreg);
4992         udelay(500);
4993         if (wait_for(I915_READ(dslreg) != temp, 5)) {
4994                 if (wait_for(I915_READ(dslreg) != temp, 5))
4995                         DRM_ERROR("mode set failed: pipe %c stuck\n", pipe_name(pipe));
4996         }
4997 }
4998
4999 /*
5000  * The hardware phase 0.0 refers to the center of the pixel.
5001  * We want to start from the top/left edge which is phase
5002  * -0.5. That matches how the hardware calculates the scaling
5003  * factors (from top-left of the first pixel to bottom-right
5004  * of the last pixel, as opposed to the pixel centers).
5005  *
5006  * For 4:2:0 subsampled chroma planes we obviously have to
5007  * adjust that so that the chroma sample position lands in
5008  * the right spot.
5009  *
5010  * Note that for packed YCbCr 4:2:2 formats there is no way to
5011  * control chroma siting. The hardware simply replicates the
5012  * chroma samples for both of the luma samples, and thus we don't
5013  * actually get the expected MPEG2 chroma siting convention :(
5014  * The same behaviour is observed on pre-SKL platforms as well.
5015  *
5016  * Theory behind the formula (note that we ignore sub-pixel
5017  * source coordinates):
5018  * s = source sample position
5019  * d = destination sample position
5020  *
5021  * Downscaling 4:1:
5022  * -0.5
5023  * | 0.0
5024  * | |     1.5 (initial phase)
5025  * | |     |
5026  * v v     v
5027  * | s | s | s | s |
5028  * |       d       |
5029  *
5030  * Upscaling 1:4:
5031  * -0.5
5032  * | -0.375 (initial phase)
5033  * | |     0.0
5034  * | |     |
5035  * v v     v
5036  * |       s       |
5037  * | d | d | d | d |
5038  */
5039 u16 skl_scaler_calc_phase(int sub, int scale, bool chroma_cosited)
5040 {
5041         int phase = -0x8000;
5042         u16 trip = 0;
5043
5044         if (chroma_cosited)
5045                 phase += (sub - 1) * 0x8000 / sub;
5046
5047         phase += scale / (2 * sub);
5048
5049         /*
5050          * Hardware initial phase limited to [-0.5:1.5].
5051          * Since the max hardware scale factor is 3.0, we
5052          * should never actually excdeed 1.0 here.
5053          */
5054         WARN_ON(phase < -0x8000 || phase > 0x18000);
5055
5056         if (phase < 0)
5057                 phase = 0x10000 + phase;
5058         else
5059                 trip = PS_PHASE_TRIP;
5060
5061         return ((phase >> 2) & PS_PHASE_MASK) | trip;
5062 }
5063
5064 #define SKL_MIN_SRC_W 8
5065 #define SKL_MAX_SRC_W 4096
5066 #define SKL_MIN_SRC_H 8
5067 #define SKL_MAX_SRC_H 4096
5068 #define SKL_MIN_DST_W 8
5069 #define SKL_MAX_DST_W 4096
5070 #define SKL_MIN_DST_H 8
5071 #define SKL_MAX_DST_H 4096
5072 #define ICL_MAX_SRC_W 5120
5073 #define ICL_MAX_SRC_H 4096
5074 #define ICL_MAX_DST_W 5120
5075 #define ICL_MAX_DST_H 4096
5076 #define SKL_MIN_YUV_420_SRC_W 16
5077 #define SKL_MIN_YUV_420_SRC_H 16
5078
5079 static int
5080 skl_update_scaler(struct intel_crtc_state *crtc_state, bool force_detach,
5081                   unsigned int scaler_user, int *scaler_id,
5082                   int src_w, int src_h, int dst_w, int dst_h,
5083                   const struct drm_format_info *format, bool need_scaler)
5084 {
5085         struct intel_crtc_scaler_state *scaler_state =
5086                 &crtc_state->scaler_state;
5087         struct intel_crtc *intel_crtc =
5088                 to_intel_crtc(crtc_state->base.crtc);
5089         struct drm_i915_private *dev_priv = to_i915(intel_crtc->base.dev);
5090         const struct drm_display_mode *adjusted_mode =
5091                 &crtc_state->base.adjusted_mode;
5092
5093         /*
5094          * Src coordinates are already rotated by 270 degrees for
5095          * the 90/270 degree plane rotation cases (to match the
5096          * GTT mapping), hence no need to account for rotation here.
5097          */
5098         if (src_w != dst_w || src_h != dst_h)
5099                 need_scaler = true;
5100
5101         /*
5102          * Scaling/fitting not supported in IF-ID mode in GEN9+
5103          * TODO: Interlace fetch mode doesn't support YUV420 planar formats.
5104          * Once NV12 is enabled, handle it here while allocating scaler
5105          * for NV12.
5106          */
5107         if (INTEL_GEN(dev_priv) >= 9 && crtc_state->base.enable &&
5108             need_scaler && adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE) {
5109                 DRM_DEBUG_KMS("Pipe/Plane scaling not supported with IF-ID mode\n");
5110                 return -EINVAL;
5111         }
5112
5113         /*
5114          * if plane is being disabled or scaler is no more required or force detach
5115          *  - free scaler binded to this plane/crtc
5116          *  - in order to do this, update crtc->scaler_usage
5117          *
5118          * Here scaler state in crtc_state is set free so that
5119          * scaler can be assigned to other user. Actual register
5120          * update to free the scaler is done in plane/panel-fit programming.
5121          * For this purpose crtc/plane_state->scaler_id isn't reset here.
5122          */
5123         if (force_detach || !need_scaler) {
5124                 if (*scaler_id >= 0) {
5125                         scaler_state->scaler_users &= ~(1 << scaler_user);
5126                         scaler_state->scalers[*scaler_id].in_use = 0;
5127
5128                         DRM_DEBUG_KMS("scaler_user index %u.%u: "
5129                                 "Staged freeing scaler id %d scaler_users = 0x%x\n",
5130                                 intel_crtc->pipe, scaler_user, *scaler_id,
5131                                 scaler_state->scaler_users);
5132                         *scaler_id = -1;
5133                 }
5134                 return 0;
5135         }
5136
5137         if (format && is_planar_yuv_format(format->format) &&
5138             (src_h < SKL_MIN_YUV_420_SRC_H || src_w < SKL_MIN_YUV_420_SRC_W)) {
5139                 DRM_DEBUG_KMS("Planar YUV: src dimensions not met\n");
5140                 return -EINVAL;
5141         }
5142
5143         /* range checks */
5144         if (src_w < SKL_MIN_SRC_W || src_h < SKL_MIN_SRC_H ||
5145             dst_w < SKL_MIN_DST_W || dst_h < SKL_MIN_DST_H ||
5146             (INTEL_GEN(dev_priv) >= 11 &&
5147              (src_w > ICL_MAX_SRC_W || src_h > ICL_MAX_SRC_H ||
5148               dst_w > ICL_MAX_DST_W || dst_h > ICL_MAX_DST_H)) ||
5149             (INTEL_GEN(dev_priv) < 11 &&
5150              (src_w > SKL_MAX_SRC_W || src_h > SKL_MAX_SRC_H ||
5151               dst_w > SKL_MAX_DST_W || dst_h > SKL_MAX_DST_H))) {
5152                 DRM_DEBUG_KMS("scaler_user index %u.%u: src %ux%u dst %ux%u "
5153                         "size is out of scaler range\n",
5154                         intel_crtc->pipe, scaler_user, src_w, src_h, dst_w, dst_h);
5155                 return -EINVAL;
5156         }
5157
5158         /* mark this plane as a scaler user in crtc_state */
5159         scaler_state->scaler_users |= (1 << scaler_user);
5160         DRM_DEBUG_KMS("scaler_user index %u.%u: "
5161                 "staged scaling request for %ux%u->%ux%u scaler_users = 0x%x\n",
5162                 intel_crtc->pipe, scaler_user, src_w, src_h, dst_w, dst_h,
5163                 scaler_state->scaler_users);
5164
5165         return 0;
5166 }
5167
5168 /**
5169  * skl_update_scaler_crtc - Stages update to scaler state for a given crtc.
5170  *
5171  * @state: crtc's scaler state
5172  *
5173  * Return
5174  *     0 - scaler_usage updated successfully
5175  *    error - requested scaling cannot be supported or other error condition
5176  */
5177 int skl_update_scaler_crtc(struct intel_crtc_state *state)
5178 {
5179         const struct drm_display_mode *adjusted_mode = &state->base.adjusted_mode;
5180         bool need_scaler = false;
5181
5182         if (state->output_format == INTEL_OUTPUT_FORMAT_YCBCR420)
5183                 need_scaler = true;
5184
5185         return skl_update_scaler(state, !state->base.active, SKL_CRTC_INDEX,
5186                                  &state->scaler_state.scaler_id,
5187                                  state->pipe_src_w, state->pipe_src_h,
5188                                  adjusted_mode->crtc_hdisplay,
5189                                  adjusted_mode->crtc_vdisplay, NULL, need_scaler);
5190 }
5191
5192 /**
5193  * skl_update_scaler_plane - Stages update to scaler state for a given plane.
5194  * @crtc_state: crtc's scaler state
5195  * @plane_state: atomic plane state to update
5196  *
5197  * Return
5198  *     0 - scaler_usage updated successfully
5199  *    error - requested scaling cannot be supported or other error condition
5200  */
5201 static int skl_update_scaler_plane(struct intel_crtc_state *crtc_state,
5202                                    struct intel_plane_state *plane_state)
5203 {
5204         struct intel_plane *intel_plane =
5205                 to_intel_plane(plane_state->base.plane);
5206         struct drm_i915_private *dev_priv = to_i915(intel_plane->base.dev);
5207         struct drm_framebuffer *fb = plane_state->base.fb;
5208         int ret;
5209         bool force_detach = !fb || !plane_state->base.visible;
5210         bool need_scaler = false;
5211
5212         /* Pre-gen11 and SDR planes always need a scaler for planar formats. */
5213         if (!icl_is_hdr_plane(dev_priv, intel_plane->id) &&
5214             fb && is_planar_yuv_format(fb->format->format))
5215                 need_scaler = true;
5216
5217         ret = skl_update_scaler(crtc_state, force_detach,
5218                                 drm_plane_index(&intel_plane->base),
5219                                 &plane_state->scaler_id,
5220                                 drm_rect_width(&plane_state->base.src) >> 16,
5221                                 drm_rect_height(&plane_state->base.src) >> 16,
5222                                 drm_rect_width(&plane_state->base.dst),
5223                                 drm_rect_height(&plane_state->base.dst),
5224                                 fb ? fb->format : NULL, need_scaler);
5225
5226         if (ret || plane_state->scaler_id < 0)
5227                 return ret;
5228
5229         /* check colorkey */
5230         if (plane_state->ckey.flags) {
5231                 DRM_DEBUG_KMS("[PLANE:%d:%s] scaling with color key not allowed",
5232                               intel_plane->base.base.id,
5233                               intel_plane->base.name);
5234                 return -EINVAL;
5235         }
5236
5237         /* Check src format */
5238         switch (fb->format->format) {
5239         case DRM_FORMAT_RGB565:
5240         case DRM_FORMAT_XBGR8888:
5241         case DRM_FORMAT_XRGB8888:
5242         case DRM_FORMAT_ABGR8888:
5243         case DRM_FORMAT_ARGB8888:
5244         case DRM_FORMAT_XRGB2101010:
5245         case DRM_FORMAT_XBGR2101010:
5246         case DRM_FORMAT_XBGR16161616F:
5247         case DRM_FORMAT_ABGR16161616F:
5248         case DRM_FORMAT_XRGB16161616F:
5249         case DRM_FORMAT_ARGB16161616F:
5250         case DRM_FORMAT_YUYV:
5251         case DRM_FORMAT_YVYU:
5252         case DRM_FORMAT_UYVY:
5253         case DRM_FORMAT_VYUY:
5254         case DRM_FORMAT_NV12:
5255         case DRM_FORMAT_P010:
5256         case DRM_FORMAT_P012:
5257         case DRM_FORMAT_P016:
5258         case DRM_FORMAT_Y210:
5259         case DRM_FORMAT_Y212:
5260         case DRM_FORMAT_Y216:
5261         case DRM_FORMAT_XVYU2101010:
5262         case DRM_FORMAT_XVYU12_16161616:
5263         case DRM_FORMAT_XVYU16161616:
5264                 break;
5265         default:
5266                 DRM_DEBUG_KMS("[PLANE:%d:%s] FB:%d unsupported scaling format 0x%x\n",
5267                               intel_plane->base.base.id, intel_plane->base.name,
5268                               fb->base.id, fb->format->format);
5269                 return -EINVAL;
5270         }
5271
5272         return 0;
5273 }
5274
5275 static void skylake_scaler_disable(struct intel_crtc *crtc)
5276 {
5277         int i;
5278
5279         for (i = 0; i < crtc->num_scalers; i++)
5280                 skl_detach_scaler(crtc, i);
5281 }
5282
5283 static void skylake_pfit_enable(const struct intel_crtc_state *crtc_state)
5284 {
5285         struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
5286         struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
5287         enum pipe pipe = crtc->pipe;
5288         const struct intel_crtc_scaler_state *scaler_state =
5289                 &crtc_state->scaler_state;
5290
5291         if (crtc_state->pch_pfit.enabled) {
5292                 u16 uv_rgb_hphase, uv_rgb_vphase;
5293                 int pfit_w, pfit_h, hscale, vscale;
5294                 int id;
5295
5296                 if (WARN_ON(crtc_state->scaler_state.scaler_id < 0))
5297                         return;
5298
5299                 pfit_w = (crtc_state->pch_pfit.size >> 16) & 0xFFFF;
5300                 pfit_h = crtc_state->pch_pfit.size & 0xFFFF;
5301
5302                 hscale = (crtc_state->pipe_src_w << 16) / pfit_w;
5303                 vscale = (crtc_state->pipe_src_h << 16) / pfit_h;
5304
5305                 uv_rgb_hphase = skl_scaler_calc_phase(1, hscale, false);
5306                 uv_rgb_vphase = skl_scaler_calc_phase(1, vscale, false);
5307
5308                 id = scaler_state->scaler_id;
5309                 I915_WRITE(SKL_PS_CTRL(pipe, id), PS_SCALER_EN |
5310                         PS_FILTER_MEDIUM | scaler_state->scalers[id].mode);
5311                 I915_WRITE_FW(SKL_PS_VPHASE(pipe, id),
5312                               PS_Y_PHASE(0) | PS_UV_RGB_PHASE(uv_rgb_vphase));
5313                 I915_WRITE_FW(SKL_PS_HPHASE(pipe, id),
5314                               PS_Y_PHASE(0) | PS_UV_RGB_PHASE(uv_rgb_hphase));
5315                 I915_WRITE(SKL_PS_WIN_POS(pipe, id), crtc_state->pch_pfit.pos);
5316                 I915_WRITE(SKL_PS_WIN_SZ(pipe, id), crtc_state->pch_pfit.size);
5317         }
5318 }
5319
5320 static void ironlake_pfit_enable(const struct intel_crtc_state *crtc_state)
5321 {
5322         struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
5323         struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
5324         int pipe = crtc->pipe;
5325
5326         if (crtc_state->pch_pfit.enabled) {
5327                 /* Force use of hard-coded filter coefficients
5328                  * as some pre-programmed values are broken,
5329                  * e.g. x201.
5330                  */
5331                 if (IS_IVYBRIDGE(dev_priv) || IS_HASWELL(dev_priv))
5332                         I915_WRITE(PF_CTL(pipe), PF_ENABLE | PF_FILTER_MED_3x3 |
5333                                                  PF_PIPE_SEL_IVB(pipe));
5334                 else
5335                         I915_WRITE(PF_CTL(pipe), PF_ENABLE | PF_FILTER_MED_3x3);
5336                 I915_WRITE(PF_WIN_POS(pipe), crtc_state->pch_pfit.pos);
5337                 I915_WRITE(PF_WIN_SZ(pipe), crtc_state->pch_pfit.size);
5338         }
5339 }
5340
5341 void hsw_enable_ips(const struct intel_crtc_state *crtc_state)
5342 {
5343         struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
5344         struct drm_device *dev = crtc->base.dev;
5345         struct drm_i915_private *dev_priv = to_i915(dev);
5346
5347         if (!crtc_state->ips_enabled)
5348                 return;
5349
5350         /*
5351          * We can only enable IPS after we enable a plane and wait for a vblank
5352          * This function is called from post_plane_update, which is run after
5353          * a vblank wait.
5354          */
5355         WARN_ON(!(crtc_state->active_planes & ~BIT(PLANE_CURSOR)));
5356
5357         if (IS_BROADWELL(dev_priv)) {
5358                 WARN_ON(sandybridge_pcode_write(dev_priv, DISPLAY_IPS_CONTROL,
5359                                                 IPS_ENABLE | IPS_PCODE_CONTROL));
5360                 /* Quoting Art Runyan: "its not safe to expect any particular
5361                  * value in IPS_CTL bit 31 after enabling IPS through the
5362                  * mailbox." Moreover, the mailbox may return a bogus state,
5363                  * so we need to just enable it and continue on.
5364                  */
5365         } else {
5366                 I915_WRITE(IPS_CTL, IPS_ENABLE);
5367                 /* The bit only becomes 1 in the next vblank, so this wait here
5368                  * is essentially intel_wait_for_vblank. If we don't have this
5369                  * and don't wait for vblanks until the end of crtc_enable, then
5370                  * the HW state readout code will complain that the expected
5371                  * IPS_CTL value is not the one we read. */
5372                 if (intel_wait_for_register(&dev_priv->uncore,
5373                                             IPS_CTL, IPS_ENABLE, IPS_ENABLE,
5374                                             50))
5375                         DRM_ERROR("Timed out waiting for IPS enable\n");
5376         }
5377 }
5378
5379 void hsw_disable_ips(const struct intel_crtc_state *crtc_state)
5380 {
5381         struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
5382         struct drm_device *dev = crtc->base.dev;
5383         struct drm_i915_private *dev_priv = to_i915(dev);
5384
5385         if (!crtc_state->ips_enabled)
5386                 return;
5387
5388         if (IS_BROADWELL(dev_priv)) {
5389                 WARN_ON(sandybridge_pcode_write(dev_priv, DISPLAY_IPS_CONTROL, 0));
5390                 /*
5391                  * Wait for PCODE to finish disabling IPS. The BSpec specified
5392                  * 42ms timeout value leads to occasional timeouts so use 100ms
5393                  * instead.
5394                  */
5395                 if (intel_wait_for_register(&dev_priv->uncore,
5396                                             IPS_CTL, IPS_ENABLE, 0,
5397                                             100))
5398                         DRM_ERROR("Timed out waiting for IPS disable\n");
5399         } else {
5400                 I915_WRITE(IPS_CTL, 0);
5401                 POSTING_READ(IPS_CTL);
5402         }
5403
5404         /* We need to wait for a vblank before we can disable the plane. */
5405         intel_wait_for_vblank(dev_priv, crtc->pipe);
5406 }
5407
5408 static void intel_crtc_dpms_overlay_disable(struct intel_crtc *intel_crtc)
5409 {
5410         if (intel_crtc->overlay) {
5411                 struct drm_device *dev = intel_crtc->base.dev;
5412
5413                 mutex_lock(&dev->struct_mutex);
5414                 (void) intel_overlay_switch_off(intel_crtc->overlay);
5415                 mutex_unlock(&dev->struct_mutex);
5416         }
5417
5418         /* Let userspace switch the overlay on again. In most cases userspace
5419          * has to recompute where to put it anyway.
5420          */
5421 }
5422
5423 /**
5424  * intel_post_enable_primary - Perform operations after enabling primary plane
5425  * @crtc: the CRTC whose primary plane was just enabled
5426  * @new_crtc_state: the enabling state
5427  *
5428  * Performs potentially sleeping operations that must be done after the primary
5429  * plane is enabled, such as updating FBC and IPS.  Note that this may be
5430  * called due to an explicit primary plane update, or due to an implicit
5431  * re-enable that is caused when a sprite plane is updated to no longer
5432  * completely hide the primary plane.
5433  */
5434 static void
5435 intel_post_enable_primary(struct drm_crtc *crtc,
5436                           const struct intel_crtc_state *new_crtc_state)
5437 {
5438         struct drm_device *dev = crtc->dev;
5439         struct drm_i915_private *dev_priv = to_i915(dev);
5440         struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5441         int pipe = intel_crtc->pipe;
5442
5443         /*
5444          * Gen2 reports pipe underruns whenever all planes are disabled.
5445          * So don't enable underrun reporting before at least some planes
5446          * are enabled.
5447          * FIXME: Need to fix the logic to work when we turn off all planes
5448          * but leave the pipe running.
5449          */
5450         if (IS_GEN(dev_priv, 2))
5451                 intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true);
5452
5453         /* Underruns don't always raise interrupts, so check manually. */
5454         intel_check_cpu_fifo_underruns(dev_priv);
5455         intel_check_pch_fifo_underruns(dev_priv);
5456 }
5457
5458 /* FIXME get rid of this and use pre_plane_update */
5459 static void
5460 intel_pre_disable_primary_noatomic(struct drm_crtc *crtc)
5461 {
5462         struct drm_device *dev = crtc->dev;
5463         struct drm_i915_private *dev_priv = to_i915(dev);
5464         struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5465         int pipe = intel_crtc->pipe;
5466
5467         /*
5468          * Gen2 reports pipe underruns whenever all planes are disabled.
5469          * So disable underrun reporting before all the planes get disabled.
5470          */
5471         if (IS_GEN(dev_priv, 2))
5472                 intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, false);
5473
5474         hsw_disable_ips(to_intel_crtc_state(crtc->state));
5475
5476         /*
5477          * Vblank time updates from the shadow to live plane control register
5478          * are blocked if the memory self-refresh mode is active at that
5479          * moment. So to make sure the plane gets truly disabled, disable
5480          * first the self-refresh mode. The self-refresh enable bit in turn
5481          * will be checked/applied by the HW only at the next frame start
5482          * event which is after the vblank start event, so we need to have a
5483          * wait-for-vblank between disabling the plane and the pipe.
5484          */
5485         if (HAS_GMCH(dev_priv) &&
5486             intel_set_memory_cxsr(dev_priv, false))
5487                 intel_wait_for_vblank(dev_priv, pipe);
5488 }
5489
5490 static bool hsw_pre_update_disable_ips(const struct intel_crtc_state *old_crtc_state,
5491                                        const struct intel_crtc_state *new_crtc_state)
5492 {
5493         struct intel_crtc *crtc = to_intel_crtc(new_crtc_state->base.crtc);
5494         struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
5495
5496         if (!old_crtc_state->ips_enabled)
5497                 return false;
5498
5499         if (needs_modeset(&new_crtc_state->base))
5500                 return true;
5501
5502         /*
5503          * Workaround : Do not read or write the pipe palette/gamma data while
5504          * GAMMA_MODE is configured for split gamma and IPS_CTL has IPS enabled.
5505          *
5506          * Disable IPS before we program the LUT.
5507          */
5508         if (IS_HASWELL(dev_priv) &&
5509             (new_crtc_state->base.color_mgmt_changed ||
5510              new_crtc_state->update_pipe) &&
5511             new_crtc_state->gamma_mode == GAMMA_MODE_MODE_SPLIT)
5512                 return true;
5513
5514         return !new_crtc_state->ips_enabled;
5515 }
5516
5517 static bool hsw_post_update_enable_ips(const struct intel_crtc_state *old_crtc_state,
5518                                        const struct intel_crtc_state *new_crtc_state)
5519 {
5520         struct intel_crtc *crtc = to_intel_crtc(new_crtc_state->base.crtc);
5521         struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
5522
5523         if (!new_crtc_state->ips_enabled)
5524                 return false;
5525
5526         if (needs_modeset(&new_crtc_state->base))
5527                 return true;
5528
5529         /*
5530          * Workaround : Do not read or write the pipe palette/gamma data while
5531          * GAMMA_MODE is configured for split gamma and IPS_CTL has IPS enabled.
5532          *
5533          * Re-enable IPS after the LUT has been programmed.
5534          */
5535         if (IS_HASWELL(dev_priv) &&
5536             (new_crtc_state->base.color_mgmt_changed ||
5537              new_crtc_state->update_pipe) &&
5538             new_crtc_state->gamma_mode == GAMMA_MODE_MODE_SPLIT)
5539                 return true;
5540
5541         /*
5542          * We can't read out IPS on broadwell, assume the worst and
5543          * forcibly enable IPS on the first fastset.
5544          */
5545         if (new_crtc_state->update_pipe &&
5546             old_crtc_state->base.adjusted_mode.private_flags & I915_MODE_FLAG_INHERITED)
5547                 return true;
5548
5549         return !old_crtc_state->ips_enabled;
5550 }
5551
5552 static bool needs_nv12_wa(struct drm_i915_private *dev_priv,
5553                           const struct intel_crtc_state *crtc_state)
5554 {
5555         if (!crtc_state->nv12_planes)
5556                 return false;
5557
5558         /* WA Display #0827: Gen9:all */
5559         if (IS_GEN(dev_priv, 9) && !IS_GEMINILAKE(dev_priv))
5560                 return true;
5561
5562         return false;
5563 }
5564
5565 static bool needs_scalerclk_wa(struct drm_i915_private *dev_priv,
5566                                const struct intel_crtc_state *crtc_state)
5567 {
5568         /* Wa_2006604312:icl */
5569         if (crtc_state->scaler_state.scaler_users > 0 && IS_ICELAKE(dev_priv))
5570                 return true;
5571
5572         return false;
5573 }
5574
5575 static void intel_post_plane_update(struct intel_crtc_state *old_crtc_state)
5576 {
5577         struct intel_crtc *crtc = to_intel_crtc(old_crtc_state->base.crtc);
5578         struct drm_device *dev = crtc->base.dev;
5579         struct drm_i915_private *dev_priv = to_i915(dev);
5580         struct drm_atomic_state *old_state = old_crtc_state->base.state;
5581         struct intel_crtc_state *pipe_config =
5582                 intel_atomic_get_new_crtc_state(to_intel_atomic_state(old_state),
5583                                                 crtc);
5584         struct drm_plane *primary = crtc->base.primary;
5585         struct drm_plane_state *old_primary_state =
5586                 drm_atomic_get_old_plane_state(old_state, primary);
5587
5588         intel_frontbuffer_flip(to_i915(crtc->base.dev), pipe_config->fb_bits);
5589
5590         if (pipe_config->update_wm_post && pipe_config->base.active)
5591                 intel_update_watermarks(crtc);
5592
5593         if (hsw_post_update_enable_ips(old_crtc_state, pipe_config))
5594                 hsw_enable_ips(pipe_config);
5595
5596         if (old_primary_state) {
5597                 struct drm_plane_state *new_primary_state =
5598                         drm_atomic_get_new_plane_state(old_state, primary);
5599
5600                 intel_fbc_post_update(crtc);
5601
5602                 if (new_primary_state->visible &&
5603                     (needs_modeset(&pipe_config->base) ||
5604                      !old_primary_state->visible))
5605                         intel_post_enable_primary(&crtc->base, pipe_config);
5606         }
5607
5608         if (needs_nv12_wa(dev_priv, old_crtc_state) &&
5609             !needs_nv12_wa(dev_priv, pipe_config))
5610                 skl_wa_827(dev_priv, crtc->pipe, false);
5611
5612         if (needs_scalerclk_wa(dev_priv, old_crtc_state) &&
5613             !needs_scalerclk_wa(dev_priv, pipe_config))
5614                 icl_wa_scalerclkgating(dev_priv, crtc->pipe, false);
5615 }
5616
5617 static void intel_pre_plane_update(struct intel_crtc_state *old_crtc_state,
5618                                    struct intel_crtc_state *pipe_config)
5619 {
5620         struct intel_crtc *crtc = to_intel_crtc(old_crtc_state->base.crtc);
5621         struct drm_device *dev = crtc->base.dev;
5622         struct drm_i915_private *dev_priv = to_i915(dev);
5623         struct drm_atomic_state *old_state = old_crtc_state->base.state;
5624         struct drm_plane *primary = crtc->base.primary;
5625         struct drm_plane_state *old_primary_state =
5626                 drm_atomic_get_old_plane_state(old_state, primary);
5627         bool modeset = needs_modeset(&pipe_config->base);
5628         struct intel_atomic_state *old_intel_state =
5629                 to_intel_atomic_state(old_state);
5630
5631         if (hsw_pre_update_disable_ips(old_crtc_state, pipe_config))
5632                 hsw_disable_ips(old_crtc_state);
5633
5634         if (old_primary_state) {
5635                 struct intel_plane_state *new_primary_state =
5636                         intel_atomic_get_new_plane_state(old_intel_state,
5637                                                          to_intel_plane(primary));
5638
5639                 intel_fbc_pre_update(crtc, pipe_config, new_primary_state);
5640                 /*
5641                  * Gen2 reports pipe underruns whenever all planes are disabled.
5642                  * So disable underrun reporting before all the planes get disabled.
5643                  */
5644                 if (IS_GEN(dev_priv, 2) && old_primary_state->visible &&
5645                     (modeset || !new_primary_state->base.visible))
5646                         intel_set_cpu_fifo_underrun_reporting(dev_priv, crtc->pipe, false);
5647         }
5648
5649         /* Display WA 827 */
5650         if (!needs_nv12_wa(dev_priv, old_crtc_state) &&
5651             needs_nv12_wa(dev_priv, pipe_config))
5652                 skl_wa_827(dev_priv, crtc->pipe, true);
5653
5654         /* Wa_2006604312:icl */
5655         if (!needs_scalerclk_wa(dev_priv, old_crtc_state) &&
5656             needs_scalerclk_wa(dev_priv, pipe_config))
5657                 icl_wa_scalerclkgating(dev_priv, crtc->pipe, true);
5658
5659         /*
5660          * Vblank time updates from the shadow to live plane control register
5661          * are blocked if the memory self-refresh mode is active at that
5662          * moment. So to make sure the plane gets truly disabled, disable
5663          * first the self-refresh mode. The self-refresh enable bit in turn
5664          * will be checked/applied by the HW only at the next frame start
5665          * event which is after the vblank start event, so we need to have a
5666          * wait-for-vblank between disabling the plane and the pipe.
5667          */
5668         if (HAS_GMCH(dev_priv) && old_crtc_state->base.active &&
5669             pipe_config->disable_cxsr && intel_set_memory_cxsr(dev_priv, false))
5670                 intel_wait_for_vblank(dev_priv, crtc->pipe);
5671
5672         /*
5673          * IVB workaround: must disable low power watermarks for at least
5674          * one frame before enabling scaling.  LP watermarks can be re-enabled
5675          * when scaling is disabled.
5676          *
5677          * WaCxSRDisabledForSpriteScaling:ivb
5678          */
5679         if (pipe_config->disable_lp_wm && ilk_disable_lp_wm(dev) &&
5680             old_crtc_state->base.active)
5681                 intel_wait_for_vblank(dev_priv, crtc->pipe);
5682
5683         /*
5684          * If we're doing a modeset, we're done.  No need to do any pre-vblank
5685          * watermark programming here.
5686          */
5687         if (needs_modeset(&pipe_config->base))
5688                 return;
5689
5690         /*
5691          * For platforms that support atomic watermarks, program the
5692          * 'intermediate' watermarks immediately.  On pre-gen9 platforms, these
5693          * will be the intermediate values that are safe for both pre- and
5694          * post- vblank; when vblank happens, the 'active' values will be set
5695          * to the final 'target' values and we'll do this again to get the
5696          * optimal watermarks.  For gen9+ platforms, the values we program here
5697          * will be the final target values which will get automatically latched
5698          * at vblank time; no further programming will be necessary.
5699          *
5700          * If a platform hasn't been transitioned to atomic watermarks yet,
5701          * we'll continue to update watermarks the old way, if flags tell
5702          * us to.
5703          */
5704         if (dev_priv->display.initial_watermarks != NULL)
5705                 dev_priv->display.initial_watermarks(old_intel_state,
5706                                                      pipe_config);
5707         else if (pipe_config->update_wm_pre)
5708                 intel_update_watermarks(crtc);
5709 }
5710
5711 static void intel_crtc_disable_planes(struct intel_atomic_state *state,
5712                                       struct intel_crtc *crtc)
5713 {
5714         struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
5715         const struct intel_crtc_state *new_crtc_state =
5716                 intel_atomic_get_new_crtc_state(state, crtc);
5717         unsigned int update_mask = new_crtc_state->update_planes;
5718         const struct intel_plane_state *old_plane_state;
5719         struct intel_plane *plane;
5720         unsigned fb_bits = 0;
5721         int i;
5722
5723         intel_crtc_dpms_overlay_disable(crtc);
5724
5725         for_each_old_intel_plane_in_state(state, plane, old_plane_state, i) {
5726                 if (crtc->pipe != plane->pipe ||
5727                     !(update_mask & BIT(plane->id)))
5728                         continue;
5729
5730                 intel_disable_plane(plane, new_crtc_state);
5731
5732                 if (old_plane_state->base.visible)
5733                         fb_bits |= plane->frontbuffer_bit;
5734         }
5735
5736         intel_frontbuffer_flip(dev_priv, fb_bits);
5737 }
5738
5739 static void intel_encoders_pre_pll_enable(struct drm_crtc *crtc,
5740                                           struct intel_crtc_state *crtc_state,
5741                                           struct drm_atomic_state *old_state)
5742 {
5743         struct drm_connector_state *conn_state;
5744         struct drm_connector *conn;
5745         int i;
5746
5747         for_each_new_connector_in_state(old_state, conn, conn_state, i) {
5748                 struct intel_encoder *encoder =
5749                         to_intel_encoder(conn_state->best_encoder);
5750
5751                 if (conn_state->crtc != crtc)
5752                         continue;
5753
5754                 if (encoder->pre_pll_enable)
5755                         encoder->pre_pll_enable(encoder, crtc_state, conn_state);
5756         }
5757 }
5758
5759 static void intel_encoders_pre_enable(struct drm_crtc *crtc,
5760                                       struct intel_crtc_state *crtc_state,
5761                                       struct drm_atomic_state *old_state)
5762 {
5763         struct drm_connector_state *conn_state;
5764         struct drm_connector *conn;
5765         int i;
5766
5767         for_each_new_connector_in_state(old_state, conn, conn_state, i) {
5768                 struct intel_encoder *encoder =
5769                         to_intel_encoder(conn_state->best_encoder);
5770
5771                 if (conn_state->crtc != crtc)
5772                         continue;
5773
5774                 if (encoder->pre_enable)
5775                         encoder->pre_enable(encoder, crtc_state, conn_state);
5776         }
5777 }
5778
5779 static void intel_encoders_enable(struct drm_crtc *crtc,
5780                                   struct intel_crtc_state *crtc_state,
5781                                   struct drm_atomic_state *old_state)
5782 {
5783         struct drm_connector_state *conn_state;
5784         struct drm_connector *conn;
5785         int i;
5786
5787         for_each_new_connector_in_state(old_state, conn, conn_state, i) {
5788                 struct intel_encoder *encoder =
5789                         to_intel_encoder(conn_state->best_encoder);
5790
5791                 if (conn_state->crtc != crtc)
5792                         continue;
5793
5794                 if (encoder->enable)
5795                         encoder->enable(encoder, crtc_state, conn_state);
5796                 intel_opregion_notify_encoder(encoder, true);
5797         }
5798 }
5799
5800 static void intel_encoders_disable(struct drm_crtc *crtc,
5801                                    struct intel_crtc_state *old_crtc_state,
5802                                    struct drm_atomic_state *old_state)
5803 {
5804         struct drm_connector_state *old_conn_state;
5805         struct drm_connector *conn;
5806         int i;
5807
5808         for_each_old_connector_in_state(old_state, conn, old_conn_state, i) {
5809                 struct intel_encoder *encoder =
5810                         to_intel_encoder(old_conn_state->best_encoder);
5811
5812                 if (old_conn_state->crtc != crtc)
5813                         continue;
5814
5815                 intel_opregion_notify_encoder(encoder, false);
5816                 if (encoder->disable)
5817                         encoder->disable(encoder, old_crtc_state, old_conn_state);
5818         }
5819 }
5820
5821 static void intel_encoders_post_disable(struct drm_crtc *crtc,
5822                                         struct intel_crtc_state *old_crtc_state,
5823                                         struct drm_atomic_state *old_state)
5824 {
5825         struct drm_connector_state *old_conn_state;
5826         struct drm_connector *conn;
5827         int i;
5828
5829         for_each_old_connector_in_state(old_state, conn, old_conn_state, i) {
5830                 struct intel_encoder *encoder =
5831                         to_intel_encoder(old_conn_state->best_encoder);
5832
5833                 if (old_conn_state->crtc != crtc)
5834                         continue;
5835
5836                 if (encoder->post_disable)
5837                         encoder->post_disable(encoder, old_crtc_state, old_conn_state);
5838         }
5839 }
5840
5841 static void intel_encoders_post_pll_disable(struct drm_crtc *crtc,
5842                                             struct intel_crtc_state *old_crtc_state,
5843                                             struct drm_atomic_state *old_state)
5844 {
5845         struct drm_connector_state *old_conn_state;
5846         struct drm_connector *conn;
5847         int i;
5848
5849         for_each_old_connector_in_state(old_state, conn, old_conn_state, i) {
5850                 struct intel_encoder *encoder =
5851                         to_intel_encoder(old_conn_state->best_encoder);
5852
5853                 if (old_conn_state->crtc != crtc)
5854                         continue;
5855
5856                 if (encoder->post_pll_disable)
5857                         encoder->post_pll_disable(encoder, old_crtc_state, old_conn_state);
5858         }
5859 }
5860
5861 static void intel_encoders_update_pipe(struct drm_crtc *crtc,
5862                                        struct intel_crtc_state *crtc_state,
5863                                        struct drm_atomic_state *old_state)
5864 {
5865         struct drm_connector_state *conn_state;
5866         struct drm_connector *conn;
5867         int i;
5868
5869         for_each_new_connector_in_state(old_state, conn, conn_state, i) {
5870                 struct intel_encoder *encoder =
5871                         to_intel_encoder(conn_state->best_encoder);
5872
5873                 if (conn_state->crtc != crtc)
5874                         continue;
5875
5876                 if (encoder->update_pipe)
5877                         encoder->update_pipe(encoder, crtc_state, conn_state);
5878         }
5879 }
5880
5881 static void intel_disable_primary_plane(const struct intel_crtc_state *crtc_state)
5882 {
5883         struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
5884         struct intel_plane *plane = to_intel_plane(crtc->base.primary);
5885
5886         plane->disable_plane(plane, crtc_state);
5887 }
5888
5889 static void ironlake_crtc_enable(struct intel_crtc_state *pipe_config,
5890                                  struct drm_atomic_state *old_state)
5891 {
5892         struct drm_crtc *crtc = pipe_config->base.crtc;
5893         struct drm_device *dev = crtc->dev;
5894         struct drm_i915_private *dev_priv = to_i915(dev);
5895         struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5896         int pipe = intel_crtc->pipe;
5897         struct intel_atomic_state *old_intel_state =
5898                 to_intel_atomic_state(old_state);
5899
5900         if (WARN_ON(intel_crtc->active))
5901                 return;
5902
5903         /*
5904          * Sometimes spurious CPU pipe underruns happen during FDI
5905          * training, at least with VGA+HDMI cloning. Suppress them.
5906          *
5907          * On ILK we get an occasional spurious CPU pipe underruns
5908          * between eDP port A enable and vdd enable. Also PCH port
5909          * enable seems to result in the occasional CPU pipe underrun.
5910          *
5911          * Spurious PCH underruns also occur during PCH enabling.
5912          */
5913         intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, false);
5914         intel_set_pch_fifo_underrun_reporting(dev_priv, pipe, false);
5915
5916         if (pipe_config->has_pch_encoder)
5917                 intel_prepare_shared_dpll(pipe_config);
5918
5919         if (intel_crtc_has_dp_encoder(pipe_config))
5920                 intel_dp_set_m_n(pipe_config, M1_N1);
5921
5922         intel_set_pipe_timings(pipe_config);
5923         intel_set_pipe_src_size(pipe_config);
5924
5925         if (pipe_config->has_pch_encoder) {
5926                 intel_cpu_transcoder_set_m_n(pipe_config,
5927                                              &pipe_config->fdi_m_n, NULL);
5928         }
5929
5930         ironlake_set_pipeconf(pipe_config);
5931
5932         intel_crtc->active = true;
5933
5934         intel_encoders_pre_enable(crtc, pipe_config, old_state);
5935
5936         if (pipe_config->has_pch_encoder) {
5937                 /* Note: FDI PLL enabling _must_ be done before we enable the
5938                  * cpu pipes, hence this is separate from all the other fdi/pch
5939                  * enabling. */
5940                 ironlake_fdi_pll_enable(pipe_config);
5941         } else {
5942                 assert_fdi_tx_disabled(dev_priv, pipe);
5943                 assert_fdi_rx_disabled(dev_priv, pipe);
5944         }
5945
5946         ironlake_pfit_enable(pipe_config);
5947
5948         /*
5949          * On ILK+ LUT must be loaded before the pipe is running but with
5950          * clocks enabled
5951          */
5952         intel_color_load_luts(pipe_config);
5953         intel_color_commit(pipe_config);
5954         /* update DSPCNTR to configure gamma for pipe bottom color */
5955         intel_disable_primary_plane(pipe_config);
5956
5957         if (dev_priv->display.initial_watermarks != NULL)
5958                 dev_priv->display.initial_watermarks(old_intel_state, pipe_config);
5959         intel_enable_pipe(pipe_config);
5960
5961         if (pipe_config->has_pch_encoder)
5962                 ironlake_pch_enable(old_intel_state, pipe_config);
5963
5964         assert_vblank_disabled(crtc);
5965         intel_crtc_vblank_on(pipe_config);
5966
5967         intel_encoders_enable(crtc, pipe_config, old_state);
5968
5969         if (HAS_PCH_CPT(dev_priv))
5970                 cpt_verify_modeset(dev, intel_crtc->pipe);
5971
5972         /*
5973          * Must wait for vblank to avoid spurious PCH FIFO underruns.
5974          * And a second vblank wait is needed at least on ILK with
5975          * some interlaced HDMI modes. Let's do the double wait always
5976          * in case there are more corner cases we don't know about.
5977          */
5978         if (pipe_config->has_pch_encoder) {
5979                 intel_wait_for_vblank(dev_priv, pipe);
5980                 intel_wait_for_vblank(dev_priv, pipe);
5981         }
5982         intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true);
5983         intel_set_pch_fifo_underrun_reporting(dev_priv, pipe, true);
5984 }
5985
5986 /* IPS only exists on ULT machines and is tied to pipe A. */
5987 static bool hsw_crtc_supports_ips(struct intel_crtc *crtc)
5988 {
5989         return HAS_IPS(to_i915(crtc->base.dev)) && crtc->pipe == PIPE_A;
5990 }
5991
5992 static void glk_pipe_scaler_clock_gating_wa(struct drm_i915_private *dev_priv,
5993                                             enum pipe pipe, bool apply)
5994 {
5995         u32 val = I915_READ(CLKGATE_DIS_PSL(pipe));
5996         u32 mask = DPF_GATING_DIS | DPF_RAM_GATING_DIS | DPFR_GATING_DIS;
5997
5998         if (apply)
5999                 val |= mask;
6000         else
6001                 val &= ~mask;
6002
6003         I915_WRITE(CLKGATE_DIS_PSL(pipe), val);
6004 }
6005
6006 static void icl_pipe_mbus_enable(struct intel_crtc *crtc)
6007 {
6008         struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
6009         enum pipe pipe = crtc->pipe;
6010         u32 val;
6011
6012         val = MBUS_DBOX_A_CREDIT(2);
6013         val |= MBUS_DBOX_BW_CREDIT(1);
6014         val |= MBUS_DBOX_B_CREDIT(8);
6015
6016         I915_WRITE(PIPE_MBUS_DBOX_CTL(pipe), val);
6017 }
6018
6019 static void haswell_crtc_enable(struct intel_crtc_state *pipe_config,
6020                                 struct drm_atomic_state *old_state)
6021 {
6022         struct drm_crtc *crtc = pipe_config->base.crtc;
6023         struct drm_i915_private *dev_priv = to_i915(crtc->dev);
6024         struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6025         int pipe = intel_crtc->pipe, hsw_workaround_pipe;
6026         enum transcoder cpu_transcoder = pipe_config->cpu_transcoder;
6027         struct intel_atomic_state *old_intel_state =
6028                 to_intel_atomic_state(old_state);
6029         bool psl_clkgate_wa;
6030
6031         if (WARN_ON(intel_crtc->active))
6032                 return;
6033
6034         intel_encoders_pre_pll_enable(crtc, pipe_config, old_state);
6035
6036         if (pipe_config->shared_dpll)
6037                 intel_enable_shared_dpll(pipe_config);
6038
6039         intel_encoders_pre_enable(crtc, pipe_config, old_state);
6040
6041         if (intel_crtc_has_dp_encoder(pipe_config))
6042                 intel_dp_set_m_n(pipe_config, M1_N1);
6043
6044         if (!transcoder_is_dsi(cpu_transcoder))
6045                 intel_set_pipe_timings(pipe_config);
6046
6047         intel_set_pipe_src_size(pipe_config);
6048
6049         if (cpu_transcoder != TRANSCODER_EDP &&
6050             !transcoder_is_dsi(cpu_transcoder)) {
6051                 I915_WRITE(PIPE_MULT(cpu_transcoder),
6052                            pipe_config->pixel_multiplier - 1);
6053         }
6054
6055         if (pipe_config->has_pch_encoder) {
6056                 intel_cpu_transcoder_set_m_n(pipe_config,
6057                                              &pipe_config->fdi_m_n, NULL);
6058         }
6059
6060         if (!transcoder_is_dsi(cpu_transcoder))
6061                 haswell_set_pipeconf(pipe_config);
6062
6063         if (INTEL_GEN(dev_priv) >= 9 || IS_BROADWELL(dev_priv))
6064                 bdw_set_pipemisc(pipe_config);
6065
6066         intel_crtc->active = true;
6067
6068         /* Display WA #1180: WaDisableScalarClockGating: glk, cnl */
6069         psl_clkgate_wa = (IS_GEMINILAKE(dev_priv) || IS_CANNONLAKE(dev_priv)) &&
6070                          pipe_config->pch_pfit.enabled;
6071         if (psl_clkgate_wa)
6072                 glk_pipe_scaler_clock_gating_wa(dev_priv, pipe, true);
6073
6074         if (INTEL_GEN(dev_priv) >= 9)
6075                 skylake_pfit_enable(pipe_config);
6076         else
6077                 ironlake_pfit_enable(pipe_config);
6078
6079         /*
6080          * On ILK+ LUT must be loaded before the pipe is running but with
6081          * clocks enabled
6082          */
6083         intel_color_load_luts(pipe_config);
6084         intel_color_commit(pipe_config);
6085         /* update DSPCNTR to configure gamma/csc for pipe bottom color */
6086         if (INTEL_GEN(dev_priv) < 9)
6087                 intel_disable_primary_plane(pipe_config);
6088
6089         if (INTEL_GEN(dev_priv) >= 11)
6090                 icl_set_pipe_chicken(intel_crtc);
6091
6092         intel_ddi_set_pipe_settings(pipe_config);
6093         if (!transcoder_is_dsi(cpu_transcoder))
6094                 intel_ddi_enable_transcoder_func(pipe_config);
6095
6096         if (dev_priv->display.initial_watermarks != NULL)
6097                 dev_priv->display.initial_watermarks(old_intel_state, pipe_config);
6098
6099         if (INTEL_GEN(dev_priv) >= 11)
6100                 icl_pipe_mbus_enable(intel_crtc);
6101
6102         /* XXX: Do the pipe assertions at the right place for BXT DSI. */
6103         if (!transcoder_is_dsi(cpu_transcoder))
6104                 intel_enable_pipe(pipe_config);
6105
6106         if (pipe_config->has_pch_encoder)
6107                 lpt_pch_enable(old_intel_state, pipe_config);
6108
6109         if (intel_crtc_has_type(pipe_config, INTEL_OUTPUT_DP_MST))
6110                 intel_ddi_set_vc_payload_alloc(pipe_config, true);
6111
6112         assert_vblank_disabled(crtc);
6113         intel_crtc_vblank_on(pipe_config);
6114
6115         intel_encoders_enable(crtc, pipe_config, old_state);
6116
6117         if (psl_clkgate_wa) {
6118                 intel_wait_for_vblank(dev_priv, pipe);
6119                 glk_pipe_scaler_clock_gating_wa(dev_priv, pipe, false);
6120         }
6121
6122         /* If we change the relative order between pipe/planes enabling, we need
6123          * to change the workaround. */
6124         hsw_workaround_pipe = pipe_config->hsw_workaround_pipe;
6125         if (IS_HASWELL(dev_priv) && hsw_workaround_pipe != INVALID_PIPE) {
6126                 intel_wait_for_vblank(dev_priv, hsw_workaround_pipe);
6127                 intel_wait_for_vblank(dev_priv, hsw_workaround_pipe);
6128         }
6129 }
6130
6131 static void ironlake_pfit_disable(const struct intel_crtc_state *old_crtc_state)
6132 {
6133         struct intel_crtc *crtc = to_intel_crtc(old_crtc_state->base.crtc);
6134         struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
6135         enum pipe pipe = crtc->pipe;
6136
6137         /* To avoid upsetting the power well on haswell only disable the pfit if
6138          * it's in use. The hw state code will make sure we get this right. */
6139         if (old_crtc_state->pch_pfit.enabled) {
6140                 I915_WRITE(PF_CTL(pipe), 0);
6141                 I915_WRITE(PF_WIN_POS(pipe), 0);
6142                 I915_WRITE(PF_WIN_SZ(pipe), 0);
6143         }
6144 }
6145
6146 static void ironlake_crtc_disable(struct intel_crtc_state *old_crtc_state,
6147                                   struct drm_atomic_state *old_state)
6148 {
6149         struct drm_crtc *crtc = old_crtc_state->base.crtc;
6150         struct drm_device *dev = crtc->dev;
6151         struct drm_i915_private *dev_priv = to_i915(dev);
6152         struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6153         int pipe = intel_crtc->pipe;
6154
6155         /*
6156          * Sometimes spurious CPU pipe underruns happen when the
6157          * pipe is already disabled, but FDI RX/TX is still enabled.
6158          * Happens at least with VGA+HDMI cloning. Suppress them.
6159          */
6160         intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, false);
6161         intel_set_pch_fifo_underrun_reporting(dev_priv, pipe, false);
6162
6163         intel_encoders_disable(crtc, old_crtc_state, old_state);
6164
6165         drm_crtc_vblank_off(crtc);
6166         assert_vblank_disabled(crtc);
6167
6168         intel_disable_pipe(old_crtc_state);
6169
6170         ironlake_pfit_disable(old_crtc_state);
6171
6172         if (old_crtc_state->has_pch_encoder)
6173                 ironlake_fdi_disable(crtc);
6174
6175         intel_encoders_post_disable(crtc, old_crtc_state, old_state);
6176
6177         if (old_crtc_state->has_pch_encoder) {
6178                 ironlake_disable_pch_transcoder(dev_priv, pipe);
6179
6180                 if (HAS_PCH_CPT(dev_priv)) {
6181                         i915_reg_t reg;
6182                         u32 temp;
6183
6184                         /* disable TRANS_DP_CTL */
6185                         reg = TRANS_DP_CTL(pipe);
6186                         temp = I915_READ(reg);
6187                         temp &= ~(TRANS_DP_OUTPUT_ENABLE |
6188                                   TRANS_DP_PORT_SEL_MASK);
6189                         temp |= TRANS_DP_PORT_SEL_NONE;
6190                         I915_WRITE(reg, temp);
6191
6192                         /* disable DPLL_SEL */
6193                         temp = I915_READ(PCH_DPLL_SEL);
6194                         temp &= ~(TRANS_DPLL_ENABLE(pipe) | TRANS_DPLLB_SEL(pipe));
6195                         I915_WRITE(PCH_DPLL_SEL, temp);
6196                 }
6197
6198                 ironlake_fdi_pll_disable(intel_crtc);
6199         }
6200
6201         intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true);
6202         intel_set_pch_fifo_underrun_reporting(dev_priv, pipe, true);
6203 }
6204
6205 static void haswell_crtc_disable(struct intel_crtc_state *old_crtc_state,
6206                                  struct drm_atomic_state *old_state)
6207 {
6208         struct drm_crtc *crtc = old_crtc_state->base.crtc;
6209         struct drm_i915_private *dev_priv = to_i915(crtc->dev);
6210         struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6211         enum transcoder cpu_transcoder = old_crtc_state->cpu_transcoder;
6212
6213         intel_encoders_disable(crtc, old_crtc_state, old_state);
6214
6215         drm_crtc_vblank_off(crtc);
6216         assert_vblank_disabled(crtc);
6217
6218         /* XXX: Do the pipe assertions at the right place for BXT DSI. */
6219         if (!transcoder_is_dsi(cpu_transcoder))
6220                 intel_disable_pipe(old_crtc_state);
6221
6222         if (intel_crtc_has_type(old_crtc_state, INTEL_OUTPUT_DP_MST))
6223                 intel_ddi_set_vc_payload_alloc(old_crtc_state, false);
6224
6225         if (!transcoder_is_dsi(cpu_transcoder))
6226                 intel_ddi_disable_transcoder_func(old_crtc_state);
6227
6228         intel_dsc_disable(old_crtc_state);
6229
6230         if (INTEL_GEN(dev_priv) >= 9)
6231                 skylake_scaler_disable(intel_crtc);
6232         else
6233                 ironlake_pfit_disable(old_crtc_state);
6234
6235         intel_encoders_post_disable(crtc, old_crtc_state, old_state);
6236
6237         intel_encoders_post_pll_disable(crtc, old_crtc_state, old_state);
6238 }
6239
6240 static void i9xx_pfit_enable(const struct intel_crtc_state *crtc_state)
6241 {
6242         struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
6243         struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
6244
6245         if (!crtc_state->gmch_pfit.control)
6246                 return;
6247
6248         /*
6249          * The panel fitter should only be adjusted whilst the pipe is disabled,
6250          * according to register description and PRM.
6251          */
6252         WARN_ON(I915_READ(PFIT_CONTROL) & PFIT_ENABLE);
6253         assert_pipe_disabled(dev_priv, crtc->pipe);
6254
6255         I915_WRITE(PFIT_PGM_RATIOS, crtc_state->gmch_pfit.pgm_ratios);
6256         I915_WRITE(PFIT_CONTROL, crtc_state->gmch_pfit.control);
6257
6258         /* Border color in case we don't scale up to the full screen. Black by
6259          * default, change to something else for debugging. */
6260         I915_WRITE(BCLRPAT(crtc->pipe), 0);
6261 }
6262
6263 bool intel_port_is_combophy(struct drm_i915_private *dev_priv, enum port port)
6264 {
6265         if (port == PORT_NONE)
6266                 return false;
6267
6268         if (IS_ELKHARTLAKE(dev_priv))
6269                 return port <= PORT_C;
6270
6271         if (INTEL_GEN(dev_priv) >= 11)
6272                 return port <= PORT_B;
6273
6274         return false;
6275 }
6276
6277 bool intel_port_is_tc(struct drm_i915_private *dev_priv, enum port port)
6278 {
6279         if (INTEL_GEN(dev_priv) >= 11 && !IS_ELKHARTLAKE(dev_priv))
6280                 return port >= PORT_C && port <= PORT_F;
6281
6282         return false;
6283 }
6284
6285 enum tc_port intel_port_to_tc(struct drm_i915_private *dev_priv, enum port port)
6286 {
6287         if (!intel_port_is_tc(dev_priv, port))
6288                 return PORT_TC_NONE;
6289
6290         return port - PORT_C;
6291 }
6292
6293 enum intel_display_power_domain intel_port_to_power_domain(enum port port)
6294 {
6295         switch (port) {
6296         case PORT_A:
6297                 return POWER_DOMAIN_PORT_DDI_A_LANES;
6298         case PORT_B:
6299                 return POWER_DOMAIN_PORT_DDI_B_LANES;
6300         case PORT_C:
6301                 return POWER_DOMAIN_PORT_DDI_C_LANES;
6302         case PORT_D:
6303                 return POWER_DOMAIN_PORT_DDI_D_LANES;
6304         case PORT_E:
6305                 return POWER_DOMAIN_PORT_DDI_E_LANES;
6306         case PORT_F:
6307                 return POWER_DOMAIN_PORT_DDI_F_LANES;
6308         default:
6309                 MISSING_CASE(port);
6310                 return POWER_DOMAIN_PORT_OTHER;
6311         }
6312 }
6313
6314 enum intel_display_power_domain
6315 intel_aux_power_domain(struct intel_digital_port *dig_port)
6316 {
6317         switch (dig_port->aux_ch) {
6318         case AUX_CH_A:
6319                 return POWER_DOMAIN_AUX_A;
6320         case AUX_CH_B:
6321                 return POWER_DOMAIN_AUX_B;
6322         case AUX_CH_C:
6323                 return POWER_DOMAIN_AUX_C;
6324         case AUX_CH_D:
6325                 return POWER_DOMAIN_AUX_D;
6326         case AUX_CH_E:
6327                 return POWER_DOMAIN_AUX_E;
6328         case AUX_CH_F:
6329                 return POWER_DOMAIN_AUX_F;
6330         default:
6331                 MISSING_CASE(dig_port->aux_ch);
6332                 return POWER_DOMAIN_AUX_A;
6333         }
6334 }
6335
6336 static u64 get_crtc_power_domains(struct drm_crtc *crtc,
6337                                   struct intel_crtc_state *crtc_state)
6338 {
6339         struct drm_device *dev = crtc->dev;
6340         struct drm_i915_private *dev_priv = to_i915(dev);
6341         struct drm_encoder *encoder;
6342         struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6343         enum pipe pipe = intel_crtc->pipe;
6344         u64 mask;
6345         enum transcoder transcoder = crtc_state->cpu_transcoder;
6346
6347         if (!crtc_state->base.active)
6348                 return 0;
6349
6350         mask = BIT_ULL(POWER_DOMAIN_PIPE(pipe));
6351         mask |= BIT_ULL(POWER_DOMAIN_TRANSCODER(transcoder));
6352         if (crtc_state->pch_pfit.enabled ||
6353             crtc_state->pch_pfit.force_thru)
6354                 mask |= BIT_ULL(POWER_DOMAIN_PIPE_PANEL_FITTER(pipe));
6355
6356         drm_for_each_encoder_mask(encoder, dev, crtc_state->base.encoder_mask) {
6357                 struct intel_encoder *intel_encoder = to_intel_encoder(encoder);
6358
6359                 mask |= BIT_ULL(intel_encoder->power_domain);
6360         }
6361
6362         if (HAS_DDI(dev_priv) && crtc_state->has_audio)
6363                 mask |= BIT_ULL(POWER_DOMAIN_AUDIO);
6364
6365         if (crtc_state->shared_dpll)
6366                 mask |= BIT_ULL(POWER_DOMAIN_DISPLAY_CORE);
6367
6368         return mask;
6369 }
6370
6371 static u64
6372 modeset_get_crtc_power_domains(struct drm_crtc *crtc,
6373                                struct intel_crtc_state *crtc_state)
6374 {
6375         struct drm_i915_private *dev_priv = to_i915(crtc->dev);
6376         struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6377         enum intel_display_power_domain domain;
6378         u64 domains, new_domains, old_domains;
6379
6380         old_domains = intel_crtc->enabled_power_domains;
6381         intel_crtc->enabled_power_domains = new_domains =
6382                 get_crtc_power_domains(crtc, crtc_state);
6383
6384         domains = new_domains & ~old_domains;
6385
6386         for_each_power_domain(domain, domains)
6387                 intel_display_power_get(dev_priv, domain);
6388
6389         return old_domains & ~new_domains;
6390 }
6391
6392 static void modeset_put_power_domains(struct drm_i915_private *dev_priv,
6393                                       u64 domains)
6394 {
6395         enum intel_display_power_domain domain;
6396
6397         for_each_power_domain(domain, domains)
6398                 intel_display_power_put_unchecked(dev_priv, domain);
6399 }
6400
6401 static void valleyview_crtc_enable(struct intel_crtc_state *pipe_config,
6402                                    struct drm_atomic_state *old_state)
6403 {
6404         struct intel_atomic_state *old_intel_state =
6405                 to_intel_atomic_state(old_state);
6406         struct drm_crtc *crtc = pipe_config->base.crtc;
6407         struct drm_device *dev = crtc->dev;
6408         struct drm_i915_private *dev_priv = to_i915(dev);
6409         struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6410         int pipe = intel_crtc->pipe;
6411
6412         if (WARN_ON(intel_crtc->active))
6413                 return;
6414
6415         if (intel_crtc_has_dp_encoder(pipe_config))
6416                 intel_dp_set_m_n(pipe_config, M1_N1);
6417
6418         intel_set_pipe_timings(pipe_config);
6419         intel_set_pipe_src_size(pipe_config);
6420
6421         if (IS_CHERRYVIEW(dev_priv) && pipe == PIPE_B) {
6422                 I915_WRITE(CHV_BLEND(pipe), CHV_BLEND_LEGACY);
6423                 I915_WRITE(CHV_CANVAS(pipe), 0);
6424         }
6425
6426         i9xx_set_pipeconf(pipe_config);
6427
6428         intel_crtc->active = true;
6429
6430         intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true);
6431
6432         intel_encoders_pre_pll_enable(crtc, pipe_config, old_state);
6433
6434         if (IS_CHERRYVIEW(dev_priv)) {
6435                 chv_prepare_pll(intel_crtc, pipe_config);
6436                 chv_enable_pll(intel_crtc, pipe_config);
6437         } else {
6438                 vlv_prepare_pll(intel_crtc, pipe_config);
6439                 vlv_enable_pll(intel_crtc, pipe_config);
6440         }
6441
6442         intel_encoders_pre_enable(crtc, pipe_config, old_state);
6443
6444         i9xx_pfit_enable(pipe_config);
6445
6446         intel_color_load_luts(pipe_config);
6447         intel_color_commit(pipe_config);
6448         /* update DSPCNTR to configure gamma for pipe bottom color */
6449         intel_disable_primary_plane(pipe_config);
6450
6451         dev_priv->display.initial_watermarks(old_intel_state,
6452                                              pipe_config);
6453         intel_enable_pipe(pipe_config);
6454
6455         assert_vblank_disabled(crtc);
6456         intel_crtc_vblank_on(pipe_config);
6457
6458         intel_encoders_enable(crtc, pipe_config, old_state);
6459 }
6460
6461 static void i9xx_set_pll_dividers(const struct intel_crtc_state *crtc_state)
6462 {
6463         struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
6464         struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
6465
6466         I915_WRITE(FP0(crtc->pipe), crtc_state->dpll_hw_state.fp0);
6467         I915_WRITE(FP1(crtc->pipe), crtc_state->dpll_hw_state.fp1);
6468 }
6469
6470 static void i9xx_crtc_enable(struct intel_crtc_state *pipe_config,
6471                              struct drm_atomic_state *old_state)
6472 {
6473         struct intel_atomic_state *old_intel_state =
6474                 to_intel_atomic_state(old_state);
6475         struct drm_crtc *crtc = pipe_config->base.crtc;
6476         struct drm_device *dev = crtc->dev;
6477         struct drm_i915_private *dev_priv = to_i915(dev);
6478         struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6479         enum pipe pipe = intel_crtc->pipe;
6480
6481         if (WARN_ON(intel_crtc->active))
6482                 return;
6483
6484         i9xx_set_pll_dividers(pipe_config);
6485
6486         if (intel_crtc_has_dp_encoder(pipe_config))
6487                 intel_dp_set_m_n(pipe_config, M1_N1);
6488
6489         intel_set_pipe_timings(pipe_config);
6490         intel_set_pipe_src_size(pipe_config);
6491
6492         i9xx_set_pipeconf(pipe_config);
6493
6494         intel_crtc->active = true;
6495
6496         if (!IS_GEN(dev_priv, 2))
6497                 intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true);
6498
6499         intel_encoders_pre_enable(crtc, pipe_config, old_state);
6500
6501         i9xx_enable_pll(intel_crtc, pipe_config);
6502
6503         i9xx_pfit_enable(pipe_config);
6504
6505         intel_color_load_luts(pipe_config);
6506         intel_color_commit(pipe_config);
6507         /* update DSPCNTR to configure gamma for pipe bottom color */
6508         intel_disable_primary_plane(pipe_config);
6509
6510         if (dev_priv->display.initial_watermarks != NULL)
6511                 dev_priv->display.initial_watermarks(old_intel_state,
6512                                                      pipe_config);
6513         else
6514                 intel_update_watermarks(intel_crtc);
6515         intel_enable_pipe(pipe_config);
6516
6517         assert_vblank_disabled(crtc);
6518         intel_crtc_vblank_on(pipe_config);
6519
6520         intel_encoders_enable(crtc, pipe_config, old_state);
6521 }
6522
6523 static void i9xx_pfit_disable(const struct intel_crtc_state *old_crtc_state)
6524 {
6525         struct intel_crtc *crtc = to_intel_crtc(old_crtc_state->base.crtc);
6526         struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
6527
6528         if (!old_crtc_state->gmch_pfit.control)
6529                 return;
6530
6531         assert_pipe_disabled(dev_priv, crtc->pipe);
6532
6533         DRM_DEBUG_KMS("disabling pfit, current: 0x%08x\n",
6534                       I915_READ(PFIT_CONTROL));
6535         I915_WRITE(PFIT_CONTROL, 0);
6536 }
6537
6538 static void i9xx_crtc_disable(struct intel_crtc_state *old_crtc_state,
6539                               struct drm_atomic_state *old_state)
6540 {
6541         struct drm_crtc *crtc = old_crtc_state->base.crtc;
6542         struct drm_device *dev = crtc->dev;
6543         struct drm_i915_private *dev_priv = to_i915(dev);
6544         struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6545         int pipe = intel_crtc->pipe;
6546
6547         /*
6548          * On gen2 planes are double buffered but the pipe isn't, so we must
6549          * wait for planes to fully turn off before disabling the pipe.
6550          */
6551         if (IS_GEN(dev_priv, 2))
6552                 intel_wait_for_vblank(dev_priv, pipe);
6553
6554         intel_encoders_disable(crtc, old_crtc_state, old_state);
6555
6556         drm_crtc_vblank_off(crtc);
6557         assert_vblank_disabled(crtc);
6558
6559         intel_disable_pipe(old_crtc_state);
6560
6561         i9xx_pfit_disable(old_crtc_state);
6562
6563         intel_encoders_post_disable(crtc, old_crtc_state, old_state);
6564
6565         if (!intel_crtc_has_type(old_crtc_state, INTEL_OUTPUT_DSI)) {
6566                 if (IS_CHERRYVIEW(dev_priv))
6567                         chv_disable_pll(dev_priv, pipe);
6568                 else if (IS_VALLEYVIEW(dev_priv))
6569                         vlv_disable_pll(dev_priv, pipe);
6570                 else
6571                         i9xx_disable_pll(old_crtc_state);
6572         }
6573
6574         intel_encoders_post_pll_disable(crtc, old_crtc_state, old_state);
6575
6576         if (!IS_GEN(dev_priv, 2))
6577                 intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, false);
6578
6579         if (!dev_priv->display.initial_watermarks)
6580                 intel_update_watermarks(intel_crtc);
6581
6582         /* clock the pipe down to 640x480@60 to potentially save power */
6583         if (IS_I830(dev_priv))
6584                 i830_enable_pipe(dev_priv, pipe);
6585 }
6586
6587 static void intel_crtc_disable_noatomic(struct drm_crtc *crtc,
6588                                         struct drm_modeset_acquire_ctx *ctx)
6589 {
6590         struct intel_encoder *encoder;
6591         struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6592         struct drm_i915_private *dev_priv = to_i915(crtc->dev);
6593         enum intel_display_power_domain domain;
6594         struct intel_plane *plane;
6595         u64 domains;
6596         struct drm_atomic_state *state;
6597         struct intel_crtc_state *crtc_state;
6598         int ret;
6599
6600         if (!intel_crtc->active)
6601                 return;
6602
6603         for_each_intel_plane_on_crtc(&dev_priv->drm, intel_crtc, plane) {
6604                 const struct intel_plane_state *plane_state =
6605                         to_intel_plane_state(plane->base.state);
6606
6607                 if (plane_state->base.visible)
6608                         intel_plane_disable_noatomic(intel_crtc, plane);
6609         }
6610
6611         state = drm_atomic_state_alloc(crtc->dev);
6612         if (!state) {
6613                 DRM_DEBUG_KMS("failed to disable [CRTC:%d:%s], out of memory",
6614                               crtc->base.id, crtc->name);
6615                 return;
6616         }
6617
6618         state->acquire_ctx = ctx;
6619
6620         /* Everything's already locked, -EDEADLK can't happen. */
6621         crtc_state = intel_atomic_get_crtc_state(state, intel_crtc);
6622         ret = drm_atomic_add_affected_connectors(state, crtc);
6623
6624         WARN_ON(IS_ERR(crtc_state) || ret);
6625
6626         dev_priv->display.crtc_disable(crtc_state, state);
6627
6628         drm_atomic_state_put(state);
6629
6630         DRM_DEBUG_KMS("[CRTC:%d:%s] hw state adjusted, was enabled, now disabled\n",
6631                       crtc->base.id, crtc->name);
6632
6633         WARN_ON(drm_atomic_set_mode_for_crtc(crtc->state, NULL) < 0);
6634         crtc->state->active = false;
6635         intel_crtc->active = false;
6636         crtc->enabled = false;
6637         crtc->state->connector_mask = 0;
6638         crtc->state->encoder_mask = 0;
6639
6640         for_each_encoder_on_crtc(crtc->dev, crtc, encoder)
6641                 encoder->base.crtc = NULL;
6642
6643         intel_fbc_disable(intel_crtc);
6644         intel_update_watermarks(intel_crtc);
6645         intel_disable_shared_dpll(to_intel_crtc_state(crtc->state));
6646
6647         domains = intel_crtc->enabled_power_domains;
6648         for_each_power_domain(domain, domains)
6649                 intel_display_power_put_unchecked(dev_priv, domain);
6650         intel_crtc->enabled_power_domains = 0;
6651
6652         dev_priv->active_crtcs &= ~(1 << intel_crtc->pipe);
6653         dev_priv->min_cdclk[intel_crtc->pipe] = 0;
6654         dev_priv->min_voltage_level[intel_crtc->pipe] = 0;
6655 }
6656
6657 /*
6658  * turn all crtc's off, but do not adjust state
6659  * This has to be paired with a call to intel_modeset_setup_hw_state.
6660  */
6661 int intel_display_suspend(struct drm_device *dev)
6662 {
6663         struct drm_i915_private *dev_priv = to_i915(dev);
6664         struct drm_atomic_state *state;
6665         int ret;
6666
6667         state = drm_atomic_helper_suspend(dev);
6668         ret = PTR_ERR_OR_ZERO(state);
6669         if (ret)
6670                 DRM_ERROR("Suspending crtc's failed with %i\n", ret);
6671         else
6672                 dev_priv->modeset_restore_state = state;
6673         return ret;
6674 }
6675
6676 void intel_encoder_destroy(struct drm_encoder *encoder)
6677 {
6678         struct intel_encoder *intel_encoder = to_intel_encoder(encoder);
6679
6680         drm_encoder_cleanup(encoder);
6681         kfree(intel_encoder);
6682 }
6683
6684 /* Cross check the actual hw state with our own modeset state tracking (and it's
6685  * internal consistency). */
6686 static void intel_connector_verify_state(struct drm_crtc_state *crtc_state,
6687                                          struct drm_connector_state *conn_state)
6688 {
6689         struct intel_connector *connector = to_intel_connector(conn_state->connector);
6690
6691         DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
6692                       connector->base.base.id,
6693                       connector->base.name);
6694
6695         if (connector->get_hw_state(connector)) {
6696                 struct intel_encoder *encoder = connector->encoder;
6697
6698                 I915_STATE_WARN(!crtc_state,
6699                          "connector enabled without attached crtc\n");
6700
6701                 if (!crtc_state)
6702                         return;
6703
6704                 I915_STATE_WARN(!crtc_state->active,
6705                       "connector is active, but attached crtc isn't\n");
6706
6707                 if (!encoder || encoder->type == INTEL_OUTPUT_DP_MST)
6708                         return;
6709
6710                 I915_STATE_WARN(conn_state->best_encoder != &encoder->base,
6711                         "atomic encoder doesn't match attached encoder\n");
6712
6713                 I915_STATE_WARN(conn_state->crtc != encoder->base.crtc,
6714                         "attached encoder crtc differs from connector crtc\n");
6715         } else {
6716                 I915_STATE_WARN(crtc_state && crtc_state->active,
6717                         "attached crtc is active, but connector isn't\n");
6718                 I915_STATE_WARN(!crtc_state && conn_state->best_encoder,
6719                         "best encoder set without crtc!\n");
6720         }
6721 }
6722
6723 static int pipe_required_fdi_lanes(struct intel_crtc_state *crtc_state)
6724 {
6725         if (crtc_state->base.enable && crtc_state->has_pch_encoder)
6726                 return crtc_state->fdi_lanes;
6727
6728         return 0;
6729 }
6730
6731 static int ironlake_check_fdi_lanes(struct drm_device *dev, enum pipe pipe,
6732                                      struct intel_crtc_state *pipe_config)
6733 {
6734         struct drm_i915_private *dev_priv = to_i915(dev);
6735         struct drm_atomic_state *state = pipe_config->base.state;
6736         struct intel_crtc *other_crtc;
6737         struct intel_crtc_state *other_crtc_state;
6738
6739         DRM_DEBUG_KMS("checking fdi config on pipe %c, lanes %i\n",
6740                       pipe_name(pipe), pipe_config->fdi_lanes);
6741         if (pipe_config->fdi_lanes > 4) {
6742                 DRM_DEBUG_KMS("invalid fdi lane config on pipe %c: %i lanes\n",
6743                               pipe_name(pipe), pipe_config->fdi_lanes);
6744                 return -EINVAL;
6745         }
6746
6747         if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv)) {
6748                 if (pipe_config->fdi_lanes > 2) {
6749                         DRM_DEBUG_KMS("only 2 lanes on haswell, required: %i lanes\n",
6750                                       pipe_config->fdi_lanes);
6751                         return -EINVAL;
6752                 } else {
6753                         return 0;
6754                 }
6755         }
6756
6757         if (INTEL_INFO(dev_priv)->num_pipes == 2)
6758                 return 0;
6759
6760         /* Ivybridge 3 pipe is really complicated */
6761         switch (pipe) {
6762         case PIPE_A:
6763                 return 0;
6764         case PIPE_B:
6765                 if (pipe_config->fdi_lanes <= 2)
6766                         return 0;
6767
6768                 other_crtc = intel_get_crtc_for_pipe(dev_priv, PIPE_C);
6769                 other_crtc_state =
6770                         intel_atomic_get_crtc_state(state, other_crtc);
6771                 if (IS_ERR(other_crtc_state))
6772                         return PTR_ERR(other_crtc_state);
6773
6774                 if (pipe_required_fdi_lanes(other_crtc_state) > 0) {
6775                         DRM_DEBUG_KMS("invalid shared fdi lane config on pipe %c: %i lanes\n",
6776                                       pipe_name(pipe), pipe_config->fdi_lanes);
6777                         return -EINVAL;
6778                 }
6779                 return 0;
6780         case PIPE_C:
6781                 if (pipe_config->fdi_lanes > 2) {
6782                         DRM_DEBUG_KMS("only 2 lanes on pipe %c: required %i lanes\n",
6783                                       pipe_name(pipe), pipe_config->fdi_lanes);
6784                         return -EINVAL;
6785                 }
6786
6787                 other_crtc = intel_get_crtc_for_pipe(dev_priv, PIPE_B);
6788                 other_crtc_state =
6789                         intel_atomic_get_crtc_state(state, other_crtc);
6790                 if (IS_ERR(other_crtc_state))
6791                         return PTR_ERR(other_crtc_state);
6792
6793                 if (pipe_required_fdi_lanes(other_crtc_state) > 2) {
6794                         DRM_DEBUG_KMS("fdi link B uses too many lanes to enable link C\n");
6795                         return -EINVAL;
6796                 }
6797                 return 0;
6798         default:
6799                 BUG();
6800         }
6801 }
6802
6803 #define RETRY 1
6804 static int ironlake_fdi_compute_config(struct intel_crtc *intel_crtc,
6805                                        struct intel_crtc_state *pipe_config)
6806 {
6807         struct drm_device *dev = intel_crtc->base.dev;
6808         const struct drm_display_mode *adjusted_mode = &pipe_config->base.adjusted_mode;
6809         int lane, link_bw, fdi_dotclock, ret;
6810         bool needs_recompute = false;
6811
6812 retry:
6813         /* FDI is a binary signal running at ~2.7GHz, encoding
6814          * each output octet as 10 bits. The actual frequency
6815          * is stored as a divider into a 100MHz clock, and the
6816          * mode pixel clock is stored in units of 1KHz.
6817          * Hence the bw of each lane in terms of the mode signal
6818          * is:
6819          */
6820         link_bw = intel_fdi_link_freq(to_i915(dev), pipe_config);
6821
6822         fdi_dotclock = adjusted_mode->crtc_clock;
6823
6824         lane = ironlake_get_lanes_required(fdi_dotclock, link_bw,
6825                                            pipe_config->pipe_bpp);
6826
6827         pipe_config->fdi_lanes = lane;
6828
6829         intel_link_compute_m_n(pipe_config->pipe_bpp, lane, fdi_dotclock,
6830                                link_bw, &pipe_config->fdi_m_n, false);
6831
6832         ret = ironlake_check_fdi_lanes(dev, intel_crtc->pipe, pipe_config);
6833         if (ret == -EDEADLK)
6834                 return ret;
6835
6836         if (ret == -EINVAL && pipe_config->pipe_bpp > 6*3) {
6837                 pipe_config->pipe_bpp -= 2*3;
6838                 DRM_DEBUG_KMS("fdi link bw constraint, reducing pipe bpp to %i\n",
6839                               pipe_config->pipe_bpp);
6840                 needs_recompute = true;
6841                 pipe_config->bw_constrained = true;
6842
6843                 goto retry;
6844         }
6845
6846         if (needs_recompute)
6847                 return RETRY;
6848
6849         return ret;
6850 }
6851
6852 bool hsw_crtc_state_ips_capable(const struct intel_crtc_state *crtc_state)
6853 {
6854         struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
6855         struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
6856
6857         /* IPS only exists on ULT machines and is tied to pipe A. */
6858         if (!hsw_crtc_supports_ips(crtc))
6859                 return false;
6860
6861         if (!i915_modparams.enable_ips)
6862                 return false;
6863
6864         if (crtc_state->pipe_bpp > 24)
6865                 return false;
6866
6867         /*
6868          * We compare against max which means we must take
6869          * the increased cdclk requirement into account when
6870          * calculating the new cdclk.
6871          *
6872          * Should measure whether using a lower cdclk w/o IPS
6873          */
6874         if (IS_BROADWELL(dev_priv) &&
6875             crtc_state->pixel_rate > dev_priv->max_cdclk_freq * 95 / 100)
6876                 return false;
6877
6878         return true;
6879 }
6880
6881 static bool hsw_compute_ips_config(struct intel_crtc_state *crtc_state)
6882 {
6883         struct drm_i915_private *dev_priv =
6884                 to_i915(crtc_state->base.crtc->dev);
6885         struct intel_atomic_state *intel_state =
6886                 to_intel_atomic_state(crtc_state->base.state);
6887
6888         if (!hsw_crtc_state_ips_capable(crtc_state))
6889                 return false;
6890
6891         /*
6892          * When IPS gets enabled, the pipe CRC changes. Since IPS gets
6893          * enabled and disabled dynamically based on package C states,
6894          * user space can't make reliable use of the CRCs, so let's just
6895          * completely disable it.
6896          */
6897         if (crtc_state->crc_enabled)
6898                 return false;
6899
6900         /* IPS should be fine as long as at least one plane is enabled. */
6901         if (!(crtc_state->active_planes & ~BIT(PLANE_CURSOR)))
6902                 return false;
6903
6904         /* pixel rate mustn't exceed 95% of cdclk with IPS on BDW */
6905         if (IS_BROADWELL(dev_priv) &&
6906             crtc_state->pixel_rate > intel_state->cdclk.logical.cdclk * 95 / 100)
6907                 return false;
6908
6909         return true;
6910 }
6911
6912 static bool intel_crtc_supports_double_wide(const struct intel_crtc *crtc)
6913 {
6914         const struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
6915
6916         /* GDG double wide on either pipe, otherwise pipe A only */
6917         return INTEL_GEN(dev_priv) < 4 &&
6918                 (crtc->pipe == PIPE_A || IS_I915G(dev_priv));
6919 }
6920
6921 static u32 ilk_pipe_pixel_rate(const struct intel_crtc_state *pipe_config)
6922 {
6923         u32 pixel_rate;
6924
6925         pixel_rate = pipe_config->base.adjusted_mode.crtc_clock;
6926
6927         /*
6928          * We only use IF-ID interlacing. If we ever use
6929          * PF-ID we'll need to adjust the pixel_rate here.
6930          */
6931
6932         if (pipe_config->pch_pfit.enabled) {
6933                 u64 pipe_w, pipe_h, pfit_w, pfit_h;
6934                 u32 pfit_size = pipe_config->pch_pfit.size;
6935
6936                 pipe_w = pipe_config->pipe_src_w;
6937                 pipe_h = pipe_config->pipe_src_h;
6938
6939                 pfit_w = (pfit_size >> 16) & 0xFFFF;
6940                 pfit_h = pfit_size & 0xFFFF;
6941                 if (pipe_w < pfit_w)
6942                         pipe_w = pfit_w;
6943                 if (pipe_h < pfit_h)
6944                         pipe_h = pfit_h;
6945
6946                 if (WARN_ON(!pfit_w || !pfit_h))
6947                         return pixel_rate;
6948
6949                 pixel_rate = div_u64(mul_u32_u32(pixel_rate, pipe_w * pipe_h),
6950                                      pfit_w * pfit_h);
6951         }
6952
6953         return pixel_rate;
6954 }
6955
6956 static void intel_crtc_compute_pixel_rate(struct intel_crtc_state *crtc_state)
6957 {
6958         struct drm_i915_private *dev_priv = to_i915(crtc_state->base.crtc->dev);
6959
6960         if (HAS_GMCH(dev_priv))
6961                 /* FIXME calculate proper pipe pixel rate for GMCH pfit */
6962                 crtc_state->pixel_rate =
6963                         crtc_state->base.adjusted_mode.crtc_clock;
6964         else
6965                 crtc_state->pixel_rate =
6966                         ilk_pipe_pixel_rate(crtc_state);
6967 }
6968
6969 static int intel_crtc_compute_config(struct intel_crtc *crtc,
6970                                      struct intel_crtc_state *pipe_config)
6971 {
6972         struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
6973         const struct drm_display_mode *adjusted_mode = &pipe_config->base.adjusted_mode;
6974         int clock_limit = dev_priv->max_dotclk_freq;
6975
6976         if (INTEL_GEN(dev_priv) < 4) {
6977                 clock_limit = dev_priv->max_cdclk_freq * 9 / 10;
6978
6979                 /*
6980                  * Enable double wide mode when the dot clock
6981                  * is > 90% of the (display) core speed.
6982                  */
6983                 if (intel_crtc_supports_double_wide(crtc) &&
6984                     adjusted_mode->crtc_clock > clock_limit) {
6985                         clock_limit = dev_priv->max_dotclk_freq;
6986                         pipe_config->double_wide = true;
6987                 }
6988         }
6989
6990         if (adjusted_mode->crtc_clock > clock_limit) {
6991                 DRM_DEBUG_KMS("requested pixel clock (%d kHz) too high (max: %d kHz, double wide: %s)\n",
6992                               adjusted_mode->crtc_clock, clock_limit,
6993                               yesno(pipe_config->double_wide));
6994                 return -EINVAL;
6995         }
6996
6997         if ((pipe_config->output_format == INTEL_OUTPUT_FORMAT_YCBCR420 ||
6998              pipe_config->output_format == INTEL_OUTPUT_FORMAT_YCBCR444) &&
6999              pipe_config->base.ctm) {
7000                 /*
7001                  * There is only one pipe CSC unit per pipe, and we need that
7002                  * for output conversion from RGB->YCBCR. So if CTM is already
7003                  * applied we can't support YCBCR420 output.
7004                  */
7005                 DRM_DEBUG_KMS("YCBCR420 and CTM together are not possible\n");
7006                 return -EINVAL;
7007         }
7008
7009         /*
7010          * Pipe horizontal size must be even in:
7011          * - DVO ganged mode
7012          * - LVDS dual channel mode
7013          * - Double wide pipe
7014          */
7015         if (pipe_config->pipe_src_w & 1) {
7016                 if (pipe_config->double_wide) {
7017                         DRM_DEBUG_KMS("Odd pipe source width not supported with double wide pipe\n");
7018                         return -EINVAL;
7019                 }
7020
7021                 if (intel_crtc_has_type(pipe_config, INTEL_OUTPUT_LVDS) &&
7022                     intel_is_dual_link_lvds(dev_priv)) {
7023                         DRM_DEBUG_KMS("Odd pipe source width not supported with dual link LVDS\n");
7024                         return -EINVAL;
7025                 }
7026         }
7027
7028         /* Cantiga+ cannot handle modes with a hsync front porch of 0.
7029          * WaPruneModeWithIncorrectHsyncOffset:ctg,elk,ilk,snb,ivb,vlv,hsw.
7030          */
7031         if ((INTEL_GEN(dev_priv) > 4 || IS_G4X(dev_priv)) &&
7032                 adjusted_mode->crtc_hsync_start == adjusted_mode->crtc_hdisplay)
7033                 return -EINVAL;
7034
7035         intel_crtc_compute_pixel_rate(pipe_config);
7036
7037         if (pipe_config->has_pch_encoder)
7038                 return ironlake_fdi_compute_config(crtc, pipe_config);
7039
7040         return 0;
7041 }
7042
7043 static void
7044 intel_reduce_m_n_ratio(u32 *num, u32 *den)
7045 {
7046         while (*num > DATA_LINK_M_N_MASK ||
7047                *den > DATA_LINK_M_N_MASK) {
7048                 *num >>= 1;
7049                 *den >>= 1;
7050         }
7051 }
7052
7053 static void compute_m_n(unsigned int m, unsigned int n,
7054                         u32 *ret_m, u32 *ret_n,
7055                         bool constant_n)
7056 {
7057         /*
7058          * Several DP dongles in particular seem to be fussy about
7059          * too large link M/N values. Give N value as 0x8000 that
7060          * should be acceptable by specific devices. 0x8000 is the
7061          * specified fixed N value for asynchronous clock mode,
7062          * which the devices expect also in synchronous clock mode.
7063          */
7064         if (constant_n)
7065                 *ret_n = 0x8000;
7066         else
7067                 *ret_n = min_t(unsigned int, roundup_pow_of_two(n), DATA_LINK_N_MAX);
7068
7069         *ret_m = div_u64(mul_u32_u32(m, *ret_n), n);
7070         intel_reduce_m_n_ratio(ret_m, ret_n);
7071 }
7072
7073 void
7074 intel_link_compute_m_n(u16 bits_per_pixel, int nlanes,
7075                        int pixel_clock, int link_clock,
7076                        struct intel_link_m_n *m_n,
7077                        bool constant_n)
7078 {
7079         m_n->tu = 64;
7080
7081         compute_m_n(bits_per_pixel * pixel_clock,
7082                     link_clock * nlanes * 8,
7083                     &m_n->gmch_m, &m_n->gmch_n,
7084                     constant_n);
7085
7086         compute_m_n(pixel_clock, link_clock,
7087                     &m_n->link_m, &m_n->link_n,
7088                     constant_n);
7089 }
7090
7091 static inline bool intel_panel_use_ssc(struct drm_i915_private *dev_priv)
7092 {
7093         if (i915_modparams.panel_use_ssc >= 0)
7094                 return i915_modparams.panel_use_ssc != 0;
7095         return dev_priv->vbt.lvds_use_ssc
7096                 && !(dev_priv->quirks & QUIRK_LVDS_SSC_DISABLE);
7097 }
7098
7099 static u32 pnv_dpll_compute_fp(struct dpll *dpll)
7100 {
7101         return (1 << dpll->n) << 16 | dpll->m2;
7102 }
7103
7104 static u32 i9xx_dpll_compute_fp(struct dpll *dpll)
7105 {
7106         return dpll->n << 16 | dpll->m1 << 8 | dpll->m2;
7107 }
7108
7109 static void i9xx_update_pll_dividers(struct intel_crtc *crtc,
7110                                      struct intel_crtc_state *crtc_state,
7111                                      struct dpll *reduced_clock)
7112 {
7113         struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
7114         u32 fp, fp2 = 0;
7115
7116         if (IS_PINEVIEW(dev_priv)) {
7117                 fp = pnv_dpll_compute_fp(&crtc_state->dpll);
7118                 if (reduced_clock)
7119                         fp2 = pnv_dpll_compute_fp(reduced_clock);
7120         } else {
7121                 fp = i9xx_dpll_compute_fp(&crtc_state->dpll);
7122                 if (reduced_clock)
7123                         fp2 = i9xx_dpll_compute_fp(reduced_clock);
7124         }
7125
7126         crtc_state->dpll_hw_state.fp0 = fp;
7127
7128         if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS) &&
7129             reduced_clock) {
7130                 crtc_state->dpll_hw_state.fp1 = fp2;
7131         } else {
7132                 crtc_state->dpll_hw_state.fp1 = fp;
7133         }
7134 }
7135
7136 static void vlv_pllb_recal_opamp(struct drm_i915_private *dev_priv, enum pipe
7137                 pipe)
7138 {
7139         u32 reg_val;
7140
7141         /*
7142          * PLLB opamp always calibrates to max value of 0x3f, force enable it
7143          * and set it to a reasonable value instead.
7144          */
7145         reg_val = vlv_dpio_read(dev_priv, pipe, VLV_PLL_DW9(1));
7146         reg_val &= 0xffffff00;
7147         reg_val |= 0x00000030;
7148         vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW9(1), reg_val);
7149
7150         reg_val = vlv_dpio_read(dev_priv, pipe, VLV_REF_DW13);
7151         reg_val &= 0x00ffffff;
7152         reg_val |= 0x8c000000;
7153         vlv_dpio_write(dev_priv, pipe, VLV_REF_DW13, reg_val);
7154
7155         reg_val = vlv_dpio_read(dev_priv, pipe, VLV_PLL_DW9(1));
7156         reg_val &= 0xffffff00;
7157         vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW9(1), reg_val);
7158
7159         reg_val = vlv_dpio_read(dev_priv, pipe, VLV_REF_DW13);
7160         reg_val &= 0x00ffffff;
7161         reg_val |= 0xb0000000;
7162         vlv_dpio_write(dev_priv, pipe, VLV_REF_DW13, reg_val);
7163 }
7164
7165 static void intel_pch_transcoder_set_m_n(const struct intel_crtc_state *crtc_state,
7166                                          const struct intel_link_m_n *m_n)
7167 {
7168         struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
7169         struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
7170         enum pipe pipe = crtc->pipe;
7171
7172         I915_WRITE(PCH_TRANS_DATA_M1(pipe), TU_SIZE(m_n->tu) | m_n->gmch_m);
7173         I915_WRITE(PCH_TRANS_DATA_N1(pipe), m_n->gmch_n);
7174         I915_WRITE(PCH_TRANS_LINK_M1(pipe), m_n->link_m);
7175         I915_WRITE(PCH_TRANS_LINK_N1(pipe), m_n->link_n);
7176 }
7177
7178 static bool transcoder_has_m2_n2(struct drm_i915_private *dev_priv,
7179                                  enum transcoder transcoder)
7180 {
7181         if (IS_HASWELL(dev_priv))
7182                 return transcoder == TRANSCODER_EDP;
7183
7184         /*
7185          * Strictly speaking some registers are available before
7186          * gen7, but we only support DRRS on gen7+
7187          */
7188         return IS_GEN(dev_priv, 7) || IS_CHERRYVIEW(dev_priv);
7189 }
7190
7191 static void intel_cpu_transcoder_set_m_n(const struct intel_crtc_state *crtc_state,
7192                                          const struct intel_link_m_n *m_n,
7193                                          const struct intel_link_m_n *m2_n2)
7194 {
7195         struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
7196         struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
7197         enum pipe pipe = crtc->pipe;
7198         enum transcoder transcoder = crtc_state->cpu_transcoder;
7199
7200         if (INTEL_GEN(dev_priv) >= 5) {
7201                 I915_WRITE(PIPE_DATA_M1(transcoder), TU_SIZE(m_n->tu) | m_n->gmch_m);
7202                 I915_WRITE(PIPE_DATA_N1(transcoder), m_n->gmch_n);
7203                 I915_WRITE(PIPE_LINK_M1(transcoder), m_n->link_m);
7204                 I915_WRITE(PIPE_LINK_N1(transcoder), m_n->link_n);
7205                 /*
7206                  *  M2_N2 registers are set only if DRRS is supported
7207                  * (to make sure the registers are not unnecessarily accessed).
7208                  */
7209                 if (m2_n2 && crtc_state->has_drrs &&
7210                     transcoder_has_m2_n2(dev_priv, transcoder)) {
7211                         I915_WRITE(PIPE_DATA_M2(transcoder),
7212                                         TU_SIZE(m2_n2->tu) | m2_n2->gmch_m);
7213                         I915_WRITE(PIPE_DATA_N2(transcoder), m2_n2->gmch_n);
7214                         I915_WRITE(PIPE_LINK_M2(transcoder), m2_n2->link_m);
7215                         I915_WRITE(PIPE_LINK_N2(transcoder), m2_n2->link_n);
7216                 }
7217         } else {
7218                 I915_WRITE(PIPE_DATA_M_G4X(pipe), TU_SIZE(m_n->tu) | m_n->gmch_m);
7219                 I915_WRITE(PIPE_DATA_N_G4X(pipe), m_n->gmch_n);
7220                 I915_WRITE(PIPE_LINK_M_G4X(pipe), m_n->link_m);
7221                 I915_WRITE(PIPE_LINK_N_G4X(pipe), m_n->link_n);
7222         }
7223 }
7224
7225 void intel_dp_set_m_n(const struct intel_crtc_state *crtc_state, enum link_m_n_set m_n)
7226 {
7227         const struct intel_link_m_n *dp_m_n, *dp_m2_n2 = NULL;
7228
7229         if (m_n == M1_N1) {
7230                 dp_m_n = &crtc_state->dp_m_n;
7231                 dp_m2_n2 = &crtc_state->dp_m2_n2;
7232         } else if (m_n == M2_N2) {
7233
7234                 /*
7235                  * M2_N2 registers are not supported. Hence m2_n2 divider value
7236                  * needs to be programmed into M1_N1.
7237                  */
7238                 dp_m_n = &crtc_state->dp_m2_n2;
7239         } else {
7240                 DRM_ERROR("Unsupported divider value\n");
7241                 return;
7242         }
7243
7244         if (crtc_state->has_pch_encoder)
7245                 intel_pch_transcoder_set_m_n(crtc_state, &crtc_state->dp_m_n);
7246         else
7247                 intel_cpu_transcoder_set_m_n(crtc_state, dp_m_n, dp_m2_n2);
7248 }
7249
7250 static void vlv_compute_dpll(struct intel_crtc *crtc,
7251                              struct intel_crtc_state *pipe_config)
7252 {
7253         pipe_config->dpll_hw_state.dpll = DPLL_INTEGRATED_REF_CLK_VLV |
7254                 DPLL_REF_CLK_ENABLE_VLV | DPLL_VGA_MODE_DIS;
7255         if (crtc->pipe != PIPE_A)
7256                 pipe_config->dpll_hw_state.dpll |= DPLL_INTEGRATED_CRI_CLK_VLV;
7257
7258         /* DPLL not used with DSI, but still need the rest set up */
7259         if (!intel_crtc_has_type(pipe_config, INTEL_OUTPUT_DSI))
7260                 pipe_config->dpll_hw_state.dpll |= DPLL_VCO_ENABLE |
7261                         DPLL_EXT_BUFFER_ENABLE_VLV;
7262
7263         pipe_config->dpll_hw_state.dpll_md =
7264                 (pipe_config->pixel_multiplier - 1) << DPLL_MD_UDI_MULTIPLIER_SHIFT;
7265 }
7266
7267 static void chv_compute_dpll(struct intel_crtc *crtc,
7268                              struct intel_crtc_state *pipe_config)
7269 {
7270         pipe_config->dpll_hw_state.dpll = DPLL_SSC_REF_CLK_CHV |
7271                 DPLL_REF_CLK_ENABLE_VLV | DPLL_VGA_MODE_DIS;
7272         if (crtc->pipe != PIPE_A)
7273                 pipe_config->dpll_hw_state.dpll |= DPLL_INTEGRATED_CRI_CLK_VLV;
7274
7275         /* DPLL not used with DSI, but still need the rest set up */
7276         if (!intel_crtc_has_type(pipe_config, INTEL_OUTPUT_DSI))
7277                 pipe_config->dpll_hw_state.dpll |= DPLL_VCO_ENABLE;
7278
7279         pipe_config->dpll_hw_state.dpll_md =
7280                 (pipe_config->pixel_multiplier - 1) << DPLL_MD_UDI_MULTIPLIER_SHIFT;
7281 }
7282
7283 static void vlv_prepare_pll(struct intel_crtc *crtc,
7284                             const struct intel_crtc_state *pipe_config)
7285 {
7286         struct drm_device *dev = crtc->base.dev;
7287         struct drm_i915_private *dev_priv = to_i915(dev);
7288         enum pipe pipe = crtc->pipe;
7289         u32 mdiv;
7290         u32 bestn, bestm1, bestm2, bestp1, bestp2;
7291         u32 coreclk, reg_val;
7292
7293         /* Enable Refclk */
7294         I915_WRITE(DPLL(pipe),
7295                    pipe_config->dpll_hw_state.dpll &
7296                    ~(DPLL_VCO_ENABLE | DPLL_EXT_BUFFER_ENABLE_VLV));
7297
7298         /* No need to actually set up the DPLL with DSI */
7299         if ((pipe_config->dpll_hw_state.dpll & DPLL_VCO_ENABLE) == 0)
7300                 return;
7301
7302         vlv_dpio_get(dev_priv);
7303
7304         bestn = pipe_config->dpll.n;
7305         bestm1 = pipe_config->dpll.m1;
7306         bestm2 = pipe_config->dpll.m2;
7307         bestp1 = pipe_config->dpll.p1;
7308         bestp2 = pipe_config->dpll.p2;
7309
7310         /* See eDP HDMI DPIO driver vbios notes doc */
7311
7312         /* PLL B needs special handling */
7313         if (pipe == PIPE_B)
7314                 vlv_pllb_recal_opamp(dev_priv, pipe);
7315
7316         /* Set up Tx target for periodic Rcomp update */
7317         vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW9_BCAST, 0x0100000f);
7318
7319         /* Disable target IRef on PLL */
7320         reg_val = vlv_dpio_read(dev_priv, pipe, VLV_PLL_DW8(pipe));
7321         reg_val &= 0x00ffffff;
7322         vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW8(pipe), reg_val);
7323
7324         /* Disable fast lock */
7325         vlv_dpio_write(dev_priv, pipe, VLV_CMN_DW0, 0x610);
7326
7327         /* Set idtafcrecal before PLL is enabled */
7328         mdiv = ((bestm1 << DPIO_M1DIV_SHIFT) | (bestm2 & DPIO_M2DIV_MASK));
7329         mdiv |= ((bestp1 << DPIO_P1_SHIFT) | (bestp2 << DPIO_P2_SHIFT));
7330         mdiv |= ((bestn << DPIO_N_SHIFT));
7331         mdiv |= (1 << DPIO_K_SHIFT);
7332
7333         /*
7334          * Post divider depends on pixel clock rate, DAC vs digital (and LVDS,
7335          * but we don't support that).
7336          * Note: don't use the DAC post divider as it seems unstable.
7337          */
7338         mdiv |= (DPIO_POST_DIV_HDMIDP << DPIO_POST_DIV_SHIFT);
7339         vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW3(pipe), mdiv);
7340
7341         mdiv |= DPIO_ENABLE_CALIBRATION;
7342         vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW3(pipe), mdiv);
7343
7344         /* Set HBR and RBR LPF coefficients */
7345         if (pipe_config->port_clock == 162000 ||
7346             intel_crtc_has_type(pipe_config, INTEL_OUTPUT_ANALOG) ||
7347             intel_crtc_has_type(pipe_config, INTEL_OUTPUT_HDMI))
7348                 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW10(pipe),
7349                                  0x009f0003);
7350         else
7351                 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW10(pipe),
7352                                  0x00d0000f);
7353
7354         if (intel_crtc_has_dp_encoder(pipe_config)) {
7355                 /* Use SSC source */
7356                 if (pipe == PIPE_A)
7357                         vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW5(pipe),
7358                                          0x0df40000);
7359                 else
7360                         vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW5(pipe),
7361                                          0x0df70000);
7362         } else { /* HDMI or VGA */
7363                 /* Use bend source */
7364                 if (pipe == PIPE_A)
7365                         vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW5(pipe),
7366                                          0x0df70000);
7367                 else
7368                         vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW5(pipe),
7369                                          0x0df40000);
7370         }
7371
7372         coreclk = vlv_dpio_read(dev_priv, pipe, VLV_PLL_DW7(pipe));
7373         coreclk = (coreclk & 0x0000ff00) | 0x01c00000;
7374         if (intel_crtc_has_dp_encoder(pipe_config))
7375                 coreclk |= 0x01000000;
7376         vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW7(pipe), coreclk);
7377
7378         vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW11(pipe), 0x87871000);
7379
7380         vlv_dpio_put(dev_priv);
7381 }
7382
7383 static void chv_prepare_pll(struct intel_crtc *crtc,
7384                             const struct intel_crtc_state *pipe_config)
7385 {
7386         struct drm_device *dev = crtc->base.dev;
7387         struct drm_i915_private *dev_priv = to_i915(dev);
7388         enum pipe pipe = crtc->pipe;
7389         enum dpio_channel port = vlv_pipe_to_channel(pipe);
7390         u32 loopfilter, tribuf_calcntr;
7391         u32 bestn, bestm1, bestm2, bestp1, bestp2, bestm2_frac;
7392         u32 dpio_val;
7393         int vco;
7394
7395         /* Enable Refclk and SSC */
7396         I915_WRITE(DPLL(pipe),
7397                    pipe_config->dpll_hw_state.dpll & ~DPLL_VCO_ENABLE);
7398
7399         /* No need to actually set up the DPLL with DSI */
7400         if ((pipe_config->dpll_hw_state.dpll & DPLL_VCO_ENABLE) == 0)
7401                 return;
7402
7403         bestn = pipe_config->dpll.n;
7404         bestm2_frac = pipe_config->dpll.m2 & 0x3fffff;
7405         bestm1 = pipe_config->dpll.m1;
7406         bestm2 = pipe_config->dpll.m2 >> 22;
7407         bestp1 = pipe_config->dpll.p1;
7408         bestp2 = pipe_config->dpll.p2;
7409         vco = pipe_config->dpll.vco;
7410         dpio_val = 0;
7411         loopfilter = 0;
7412
7413         vlv_dpio_get(dev_priv);
7414
7415         /* p1 and p2 divider */
7416         vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW13(port),
7417                         5 << DPIO_CHV_S1_DIV_SHIFT |
7418                         bestp1 << DPIO_CHV_P1_DIV_SHIFT |
7419                         bestp2 << DPIO_CHV_P2_DIV_SHIFT |
7420                         1 << DPIO_CHV_K_DIV_SHIFT);
7421
7422         /* Feedback post-divider - m2 */
7423         vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW0(port), bestm2);
7424
7425         /* Feedback refclk divider - n and m1 */
7426         vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW1(port),
7427                         DPIO_CHV_M1_DIV_BY_2 |
7428                         1 << DPIO_CHV_N_DIV_SHIFT);
7429
7430         /* M2 fraction division */
7431         vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW2(port), bestm2_frac);
7432
7433         /* M2 fraction division enable */
7434         dpio_val = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW3(port));
7435         dpio_val &= ~(DPIO_CHV_FEEDFWD_GAIN_MASK | DPIO_CHV_FRAC_DIV_EN);
7436         dpio_val |= (2 << DPIO_CHV_FEEDFWD_GAIN_SHIFT);
7437         if (bestm2_frac)
7438                 dpio_val |= DPIO_CHV_FRAC_DIV_EN;
7439         vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW3(port), dpio_val);
7440
7441         /* Program digital lock detect threshold */
7442         dpio_val = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW9(port));
7443         dpio_val &= ~(DPIO_CHV_INT_LOCK_THRESHOLD_MASK |
7444                                         DPIO_CHV_INT_LOCK_THRESHOLD_SEL_COARSE);
7445         dpio_val |= (0x5 << DPIO_CHV_INT_LOCK_THRESHOLD_SHIFT);
7446         if (!bestm2_frac)
7447                 dpio_val |= DPIO_CHV_INT_LOCK_THRESHOLD_SEL_COARSE;
7448         vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW9(port), dpio_val);
7449
7450         /* Loop filter */
7451         if (vco == 5400000) {
7452                 loopfilter |= (0x3 << DPIO_CHV_PROP_COEFF_SHIFT);
7453                 loopfilter |= (0x8 << DPIO_CHV_INT_COEFF_SHIFT);
7454                 loopfilter |= (0x1 << DPIO_CHV_GAIN_CTRL_SHIFT);
7455                 tribuf_calcntr = 0x9;
7456         } else if (vco <= 6200000) {
7457                 loopfilter |= (0x5 << DPIO_CHV_PROP_COEFF_SHIFT);
7458                 loopfilter |= (0xB << DPIO_CHV_INT_COEFF_SHIFT);
7459                 loopfilter |= (0x3 << DPIO_CHV_GAIN_CTRL_SHIFT);
7460                 tribuf_calcntr = 0x9;
7461         } else if (vco <= 6480000) {
7462                 loopfilter |= (0x4 << DPIO_CHV_PROP_COEFF_SHIFT);
7463                 loopfilter |= (0x9 << DPIO_CHV_INT_COEFF_SHIFT);
7464                 loopfilter |= (0x3 << DPIO_CHV_GAIN_CTRL_SHIFT);
7465                 tribuf_calcntr = 0x8;
7466         } else {
7467                 /* Not supported. Apply the same limits as in the max case */
7468                 loopfilter |= (0x4 << DPIO_CHV_PROP_COEFF_SHIFT);
7469                 loopfilter |= (0x9 << DPIO_CHV_INT_COEFF_SHIFT);
7470                 loopfilter |= (0x3 << DPIO_CHV_GAIN_CTRL_SHIFT);
7471                 tribuf_calcntr = 0;
7472         }
7473         vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW6(port), loopfilter);
7474
7475         dpio_val = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW8(port));
7476         dpio_val &= ~DPIO_CHV_TDC_TARGET_CNT_MASK;
7477         dpio_val |= (tribuf_calcntr << DPIO_CHV_TDC_TARGET_CNT_SHIFT);
7478         vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW8(port), dpio_val);
7479
7480         /* AFC Recal */
7481         vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW14(port),
7482                         vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW14(port)) |
7483                         DPIO_AFC_RECAL);
7484
7485         vlv_dpio_put(dev_priv);
7486 }
7487
7488 /**
7489  * vlv_force_pll_on - forcibly enable just the PLL
7490  * @dev_priv: i915 private structure
7491  * @pipe: pipe PLL to enable
7492  * @dpll: PLL configuration
7493  *
7494  * Enable the PLL for @pipe using the supplied @dpll config. To be used
7495  * in cases where we need the PLL enabled even when @pipe is not going to
7496  * be enabled.
7497  */
7498 int vlv_force_pll_on(struct drm_i915_private *dev_priv, enum pipe pipe,
7499                      const struct dpll *dpll)
7500 {
7501         struct intel_crtc *crtc = intel_get_crtc_for_pipe(dev_priv, pipe);
7502         struct intel_crtc_state *pipe_config;
7503
7504         pipe_config = kzalloc(sizeof(*pipe_config), GFP_KERNEL);
7505         if (!pipe_config)
7506                 return -ENOMEM;
7507
7508         pipe_config->base.crtc = &crtc->base;
7509         pipe_config->pixel_multiplier = 1;
7510         pipe_config->dpll = *dpll;
7511
7512         if (IS_CHERRYVIEW(dev_priv)) {
7513                 chv_compute_dpll(crtc, pipe_config);
7514                 chv_prepare_pll(crtc, pipe_config);
7515                 chv_enable_pll(crtc, pipe_config);
7516         } else {
7517                 vlv_compute_dpll(crtc, pipe_config);
7518                 vlv_prepare_pll(crtc, pipe_config);
7519                 vlv_enable_pll(crtc, pipe_config);
7520         }
7521
7522         kfree(pipe_config);
7523
7524         return 0;
7525 }
7526
7527 /**
7528  * vlv_force_pll_off - forcibly disable just the PLL
7529  * @dev_priv: i915 private structure
7530  * @pipe: pipe PLL to disable
7531  *
7532  * Disable the PLL for @pipe. To be used in cases where we need
7533  * the PLL enabled even when @pipe is not going to be enabled.
7534  */
7535 void vlv_force_pll_off(struct drm_i915_private *dev_priv, enum pipe pipe)
7536 {
7537         if (IS_CHERRYVIEW(dev_priv))
7538                 chv_disable_pll(dev_priv, pipe);
7539         else
7540                 vlv_disable_pll(dev_priv, pipe);
7541 }
7542
7543 static void i9xx_compute_dpll(struct intel_crtc *crtc,
7544                               struct intel_crtc_state *crtc_state,
7545                               struct dpll *reduced_clock)
7546 {
7547         struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
7548         u32 dpll;
7549         struct dpll *clock = &crtc_state->dpll;
7550
7551         i9xx_update_pll_dividers(crtc, crtc_state, reduced_clock);
7552
7553         dpll = DPLL_VGA_MODE_DIS;
7554
7555         if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS))
7556                 dpll |= DPLLB_MODE_LVDS;
7557         else
7558                 dpll |= DPLLB_MODE_DAC_SERIAL;
7559
7560         if (IS_I945G(dev_priv) || IS_I945GM(dev_priv) ||
7561             IS_G33(dev_priv) || IS_PINEVIEW(dev_priv)) {
7562                 dpll |= (crtc_state->pixel_multiplier - 1)
7563                         << SDVO_MULTIPLIER_SHIFT_HIRES;
7564         }
7565
7566         if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_SDVO) ||
7567             intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI))
7568                 dpll |= DPLL_SDVO_HIGH_SPEED;
7569
7570         if (intel_crtc_has_dp_encoder(crtc_state))
7571                 dpll |= DPLL_SDVO_HIGH_SPEED;
7572
7573         /* compute bitmask from p1 value */
7574         if (IS_PINEVIEW(dev_priv))
7575                 dpll |= (1 << (clock->p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT_PINEVIEW;
7576         else {
7577                 dpll |= (1 << (clock->p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
7578                 if (IS_G4X(dev_priv) && reduced_clock)
7579                         dpll |= (1 << (reduced_clock->p1 - 1)) << DPLL_FPA1_P1_POST_DIV_SHIFT;
7580         }
7581         switch (clock->p2) {
7582         case 5:
7583                 dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_5;
7584                 break;
7585         case 7:
7586                 dpll |= DPLLB_LVDS_P2_CLOCK_DIV_7;
7587                 break;
7588         case 10:
7589                 dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_10;
7590                 break;
7591         case 14:
7592                 dpll |= DPLLB_LVDS_P2_CLOCK_DIV_14;
7593                 break;
7594         }
7595         if (INTEL_GEN(dev_priv) >= 4)
7596                 dpll |= (6 << PLL_LOAD_PULSE_PHASE_SHIFT);
7597
7598         if (crtc_state->sdvo_tv_clock)
7599                 dpll |= PLL_REF_INPUT_TVCLKINBC;
7600         else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS) &&
7601                  intel_panel_use_ssc(dev_priv))
7602                 dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN;
7603         else
7604                 dpll |= PLL_REF_INPUT_DREFCLK;
7605
7606         dpll |= DPLL_VCO_ENABLE;
7607         crtc_state->dpll_hw_state.dpll = dpll;
7608
7609         if (INTEL_GEN(dev_priv) >= 4) {
7610                 u32 dpll_md = (crtc_state->pixel_multiplier - 1)
7611                         << DPLL_MD_UDI_MULTIPLIER_SHIFT;
7612                 crtc_state->dpll_hw_state.dpll_md = dpll_md;
7613         }
7614 }
7615
7616 static void i8xx_compute_dpll(struct intel_crtc *crtc,
7617                               struct intel_crtc_state *crtc_state,
7618                               struct dpll *reduced_clock)
7619 {
7620         struct drm_device *dev = crtc->base.dev;
7621         struct drm_i915_private *dev_priv = to_i915(dev);
7622         u32 dpll;
7623         struct dpll *clock = &crtc_state->dpll;
7624
7625         i9xx_update_pll_dividers(crtc, crtc_state, reduced_clock);
7626
7627         dpll = DPLL_VGA_MODE_DIS;
7628
7629         if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS)) {
7630                 dpll |= (1 << (clock->p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
7631         } else {
7632                 if (clock->p1 == 2)
7633                         dpll |= PLL_P1_DIVIDE_BY_TWO;
7634                 else
7635                         dpll |= (clock->p1 - 2) << DPLL_FPA01_P1_POST_DIV_SHIFT;
7636                 if (clock->p2 == 4)
7637                         dpll |= PLL_P2_DIVIDE_BY_4;
7638         }
7639
7640         /*
7641          * Bspec:
7642          * "[Almador Errata}: For the correct operation of the muxed DVO pins
7643          *  (GDEVSELB/I2Cdata, GIRDBY/I2CClk) and (GFRAMEB/DVI_Data,
7644          *  GTRDYB/DVI_Clk): Bit 31 (DPLL VCO Enable) and Bit 30 (2X Clock
7645          *  Enable) must be set to “1” in both the DPLL A Control Register
7646          *  (06014h-06017h) and DPLL B Control Register (06018h-0601Bh)."
7647          *
7648          * For simplicity We simply keep both bits always enabled in
7649          * both DPLLS. The spec says we should disable the DVO 2X clock
7650          * when not needed, but this seems to work fine in practice.
7651          */
7652         if (IS_I830(dev_priv) ||
7653             intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DVO))
7654                 dpll |= DPLL_DVO_2X_MODE;
7655
7656         if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS) &&
7657             intel_panel_use_ssc(dev_priv))
7658                 dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN;
7659         else
7660                 dpll |= PLL_REF_INPUT_DREFCLK;
7661
7662         dpll |= DPLL_VCO_ENABLE;
7663         crtc_state->dpll_hw_state.dpll = dpll;
7664 }
7665
7666 static void intel_set_pipe_timings(const struct intel_crtc_state *crtc_state)
7667 {
7668         struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
7669         struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
7670         enum pipe pipe = crtc->pipe;
7671         enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
7672         const struct drm_display_mode *adjusted_mode = &crtc_state->base.adjusted_mode;
7673         u32 crtc_vtotal, crtc_vblank_end;
7674         int vsyncshift = 0;
7675
7676         /* We need to be careful not to changed the adjusted mode, for otherwise
7677          * the hw state checker will get angry at the mismatch. */
7678         crtc_vtotal = adjusted_mode->crtc_vtotal;
7679         crtc_vblank_end = adjusted_mode->crtc_vblank_end;
7680
7681         if (adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE) {
7682                 /* the chip adds 2 halflines automatically */
7683                 crtc_vtotal -= 1;
7684                 crtc_vblank_end -= 1;
7685
7686                 if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_SDVO))
7687                         vsyncshift = (adjusted_mode->crtc_htotal - 1) / 2;
7688                 else
7689                         vsyncshift = adjusted_mode->crtc_hsync_start -
7690                                 adjusted_mode->crtc_htotal / 2;
7691                 if (vsyncshift < 0)
7692                         vsyncshift += adjusted_mode->crtc_htotal;
7693         }
7694
7695         if (INTEL_GEN(dev_priv) > 3)
7696                 I915_WRITE(VSYNCSHIFT(cpu_transcoder), vsyncshift);
7697
7698         I915_WRITE(HTOTAL(cpu_transcoder),
7699                    (adjusted_mode->crtc_hdisplay - 1) |
7700                    ((adjusted_mode->crtc_htotal - 1) << 16));
7701         I915_WRITE(HBLANK(cpu_transcoder),
7702                    (adjusted_mode->crtc_hblank_start - 1) |
7703                    ((adjusted_mode->crtc_hblank_end - 1) << 16));
7704         I915_WRITE(HSYNC(cpu_transcoder),
7705                    (adjusted_mode->crtc_hsync_start - 1) |
7706                    ((adjusted_mode->crtc_hsync_end - 1) << 16));
7707
7708         I915_WRITE(VTOTAL(cpu_transcoder),
7709                    (adjusted_mode->crtc_vdisplay - 1) |
7710                    ((crtc_vtotal - 1) << 16));
7711         I915_WRITE(VBLANK(cpu_transcoder),
7712                    (adjusted_mode->crtc_vblank_start - 1) |
7713                    ((crtc_vblank_end - 1) << 16));
7714         I915_WRITE(VSYNC(cpu_transcoder),
7715                    (adjusted_mode->crtc_vsync_start - 1) |
7716                    ((adjusted_mode->crtc_vsync_end - 1) << 16));
7717
7718         /* Workaround: when the EDP input selection is B, the VTOTAL_B must be
7719          * programmed with the VTOTAL_EDP value. Same for VTOTAL_C. This is
7720          * documented on the DDI_FUNC_CTL register description, EDP Input Select
7721          * bits. */
7722         if (IS_HASWELL(dev_priv) && cpu_transcoder == TRANSCODER_EDP &&
7723             (pipe == PIPE_B || pipe == PIPE_C))
7724                 I915_WRITE(VTOTAL(pipe), I915_READ(VTOTAL(cpu_transcoder)));
7725
7726 }
7727
7728 static void intel_set_pipe_src_size(const struct intel_crtc_state *crtc_state)
7729 {
7730         struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
7731         struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
7732         enum pipe pipe = crtc->pipe;
7733
7734         /* pipesrc controls the size that is scaled from, which should
7735          * always be the user's requested size.
7736          */
7737         I915_WRITE(PIPESRC(pipe),
7738                    ((crtc_state->pipe_src_w - 1) << 16) |
7739                    (crtc_state->pipe_src_h - 1));
7740 }
7741
7742 static void intel_get_pipe_timings(struct intel_crtc *crtc,
7743                                    struct intel_crtc_state *pipe_config)
7744 {
7745         struct drm_device *dev = crtc->base.dev;
7746         struct drm_i915_private *dev_priv = to_i915(dev);
7747         enum transcoder cpu_transcoder = pipe_config->cpu_transcoder;
7748         u32 tmp;
7749
7750         tmp = I915_READ(HTOTAL(cpu_transcoder));
7751         pipe_config->base.adjusted_mode.crtc_hdisplay = (tmp & 0xffff) + 1;
7752         pipe_config->base.adjusted_mode.crtc_htotal = ((tmp >> 16) & 0xffff) + 1;
7753
7754         if (!transcoder_is_dsi(cpu_transcoder)) {
7755                 tmp = I915_READ(HBLANK(cpu_transcoder));
7756                 pipe_config->base.adjusted_mode.crtc_hblank_start =
7757                                                         (tmp & 0xffff) + 1;
7758                 pipe_config->base.adjusted_mode.crtc_hblank_end =
7759                                                 ((tmp >> 16) & 0xffff) + 1;
7760         }
7761         tmp = I915_READ(HSYNC(cpu_transcoder));
7762         pipe_config->base.adjusted_mode.crtc_hsync_start = (tmp & 0xffff) + 1;
7763         pipe_config->base.adjusted_mode.crtc_hsync_end = ((tmp >> 16) & 0xffff) + 1;
7764
7765         tmp = I915_READ(VTOTAL(cpu_transcoder));
7766         pipe_config->base.adjusted_mode.crtc_vdisplay = (tmp & 0xffff) + 1;
7767         pipe_config->base.adjusted_mode.crtc_vtotal = ((tmp >> 16) & 0xffff) + 1;
7768
7769         if (!transcoder_is_dsi(cpu_transcoder)) {
7770                 tmp = I915_READ(VBLANK(cpu_transcoder));
7771                 pipe_config->base.adjusted_mode.crtc_vblank_start =
7772                                                         (tmp & 0xffff) + 1;
7773                 pipe_config->base.adjusted_mode.crtc_vblank_end =
7774                                                 ((tmp >> 16) & 0xffff) + 1;
7775         }
7776         tmp = I915_READ(VSYNC(cpu_transcoder));
7777         pipe_config->base.adjusted_mode.crtc_vsync_start = (tmp & 0xffff) + 1;
7778         pipe_config->base.adjusted_mode.crtc_vsync_end = ((tmp >> 16) & 0xffff) + 1;
7779
7780         if (I915_READ(PIPECONF(cpu_transcoder)) & PIPECONF_INTERLACE_MASK) {
7781                 pipe_config->base.adjusted_mode.flags |= DRM_MODE_FLAG_INTERLACE;
7782                 pipe_config->base.adjusted_mode.crtc_vtotal += 1;
7783                 pipe_config->base.adjusted_mode.crtc_vblank_end += 1;
7784         }
7785 }
7786
7787 static void intel_get_pipe_src_size(struct intel_crtc *crtc,
7788                                     struct intel_crtc_state *pipe_config)
7789 {
7790         struct drm_device *dev = crtc->base.dev;
7791         struct drm_i915_private *dev_priv = to_i915(dev);
7792         u32 tmp;
7793
7794         tmp = I915_READ(PIPESRC(crtc->pipe));
7795         pipe_config->pipe_src_h = (tmp & 0xffff) + 1;
7796         pipe_config->pipe_src_w = ((tmp >> 16) & 0xffff) + 1;
7797
7798         pipe_config->base.mode.vdisplay = pipe_config->pipe_src_h;
7799         pipe_config->base.mode.hdisplay = pipe_config->pipe_src_w;
7800 }
7801
7802 void intel_mode_from_pipe_config(struct drm_display_mode *mode,
7803                                  struct intel_crtc_state *pipe_config)
7804 {
7805         mode->hdisplay = pipe_config->base.adjusted_mode.crtc_hdisplay;
7806         mode->htotal = pipe_config->base.adjusted_mode.crtc_htotal;
7807         mode->hsync_start = pipe_config->base.adjusted_mode.crtc_hsync_start;
7808         mode->hsync_end = pipe_config->base.adjusted_mode.crtc_hsync_end;
7809
7810         mode->vdisplay = pipe_config->base.adjusted_mode.crtc_vdisplay;
7811         mode->vtotal = pipe_config->base.adjusted_mode.crtc_vtotal;
7812         mode->vsync_start = pipe_config->base.adjusted_mode.crtc_vsync_start;
7813         mode->vsync_end = pipe_config->base.adjusted_mode.crtc_vsync_end;
7814
7815         mode->flags = pipe_config->base.adjusted_mode.flags;
7816         mode->type = DRM_MODE_TYPE_DRIVER;
7817
7818         mode->clock = pipe_config->base.adjusted_mode.crtc_clock;
7819
7820         mode->hsync = drm_mode_hsync(mode);
7821         mode->vrefresh = drm_mode_vrefresh(mode);
7822         drm_mode_set_name(mode);
7823 }
7824
7825 static void i9xx_set_pipeconf(const struct intel_crtc_state *crtc_state)
7826 {
7827         struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
7828         struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
7829         u32 pipeconf;
7830
7831         pipeconf = 0;
7832
7833         /* we keep both pipes enabled on 830 */
7834         if (IS_I830(dev_priv))
7835                 pipeconf |= I915_READ(PIPECONF(crtc->pipe)) & PIPECONF_ENABLE;
7836
7837         if (crtc_state->double_wide)
7838                 pipeconf |= PIPECONF_DOUBLE_WIDE;
7839
7840         /* only g4x and later have fancy bpc/dither controls */
7841         if (IS_G4X(dev_priv) || IS_VALLEYVIEW(dev_priv) ||
7842             IS_CHERRYVIEW(dev_priv)) {
7843                 /* Bspec claims that we can't use dithering for 30bpp pipes. */
7844                 if (crtc_state->dither && crtc_state->pipe_bpp != 30)
7845                         pipeconf |= PIPECONF_DITHER_EN |
7846                                     PIPECONF_DITHER_TYPE_SP;
7847
7848                 switch (crtc_state->pipe_bpp) {
7849                 case 18:
7850                         pipeconf |= PIPECONF_6BPC;
7851                         break;
7852                 case 24:
7853                         pipeconf |= PIPECONF_8BPC;
7854                         break;
7855                 case 30:
7856                         pipeconf |= PIPECONF_10BPC;
7857                         break;
7858                 default:
7859                         /* Case prevented by intel_choose_pipe_bpp_dither. */
7860                         BUG();
7861                 }
7862         }
7863
7864         if (crtc_state->base.adjusted_mode.flags & DRM_MODE_FLAG_INTERLACE) {
7865                 if (INTEL_GEN(dev_priv) < 4 ||
7866                     intel_crtc_has_type(crtc_state, INTEL_OUTPUT_SDVO))
7867                         pipeconf |= PIPECONF_INTERLACE_W_FIELD_INDICATION;
7868                 else
7869                         pipeconf |= PIPECONF_INTERLACE_W_SYNC_SHIFT;
7870         } else {
7871                 pipeconf |= PIPECONF_PROGRESSIVE;
7872         }
7873
7874         if ((IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) &&
7875              crtc_state->limited_color_range)
7876                 pipeconf |= PIPECONF_COLOR_RANGE_SELECT;
7877
7878         pipeconf |= PIPECONF_GAMMA_MODE(crtc_state->gamma_mode);
7879
7880         I915_WRITE(PIPECONF(crtc->pipe), pipeconf);
7881         POSTING_READ(PIPECONF(crtc->pipe));
7882 }
7883
7884 static int i8xx_crtc_compute_clock(struct intel_crtc *crtc,
7885                                    struct intel_crtc_state *crtc_state)
7886 {
7887         struct drm_device *dev = crtc->base.dev;
7888         struct drm_i915_private *dev_priv = to_i915(dev);
7889         const struct intel_limit *limit;
7890         int refclk = 48000;
7891
7892         memset(&crtc_state->dpll_hw_state, 0,
7893                sizeof(crtc_state->dpll_hw_state));
7894
7895         if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS)) {
7896                 if (intel_panel_use_ssc(dev_priv)) {
7897                         refclk = dev_priv->vbt.lvds_ssc_freq;
7898                         DRM_DEBUG_KMS("using SSC reference clock of %d kHz\n", refclk);
7899                 }
7900
7901                 limit = &intel_limits_i8xx_lvds;
7902         } else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DVO)) {
7903                 limit = &intel_limits_i8xx_dvo;
7904         } else {
7905                 limit = &intel_limits_i8xx_dac;
7906         }
7907
7908         if (!crtc_state->clock_set &&
7909             !i9xx_find_best_dpll(limit, crtc_state, crtc_state->port_clock,
7910                                  refclk, NULL, &crtc_state->dpll)) {
7911                 DRM_ERROR("Couldn't find PLL settings for mode!\n");
7912                 return -EINVAL;
7913         }
7914
7915         i8xx_compute_dpll(crtc, crtc_state, NULL);
7916
7917         return 0;
7918 }
7919
7920 static int g4x_crtc_compute_clock(struct intel_crtc *crtc,
7921                                   struct intel_crtc_state *crtc_state)
7922 {
7923         struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
7924         const struct intel_limit *limit;
7925         int refclk = 96000;
7926
7927         memset(&crtc_state->dpll_hw_state, 0,
7928                sizeof(crtc_state->dpll_hw_state));
7929
7930         if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS)) {
7931                 if (intel_panel_use_ssc(dev_priv)) {
7932                         refclk = dev_priv->vbt.lvds_ssc_freq;
7933                         DRM_DEBUG_KMS("using SSC reference clock of %d kHz\n", refclk);
7934                 }
7935
7936                 if (intel_is_dual_link_lvds(dev_priv))
7937                         limit = &intel_limits_g4x_dual_channel_lvds;
7938                 else
7939                         limit = &intel_limits_g4x_single_channel_lvds;
7940         } else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI) ||
7941                    intel_crtc_has_type(crtc_state, INTEL_OUTPUT_ANALOG)) {
7942                 limit = &intel_limits_g4x_hdmi;
7943         } else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_SDVO)) {
7944                 limit = &intel_limits_g4x_sdvo;
7945         } else {
7946                 /* The option is for other outputs */
7947                 limit = &intel_limits_i9xx_sdvo;
7948         }
7949
7950         if (!crtc_state->clock_set &&
7951             !g4x_find_best_dpll(limit, crtc_state, crtc_state->port_clock,
7952                                 refclk, NULL, &crtc_state->dpll)) {
7953                 DRM_ERROR("Couldn't find PLL settings for mode!\n");
7954                 return -EINVAL;
7955         }
7956
7957         i9xx_compute_dpll(crtc, crtc_state, NULL);
7958
7959         return 0;
7960 }
7961
7962 static int pnv_crtc_compute_clock(struct intel_crtc *crtc,
7963                                   struct intel_crtc_state *crtc_state)
7964 {
7965         struct drm_device *dev = crtc->base.dev;
7966         struct drm_i915_private *dev_priv = to_i915(dev);
7967         const struct intel_limit *limit;
7968         int refclk = 96000;
7969
7970         memset(&crtc_state->dpll_hw_state, 0,
7971                sizeof(crtc_state->dpll_hw_state));
7972
7973         if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS)) {
7974                 if (intel_panel_use_ssc(dev_priv)) {
7975                         refclk = dev_priv->vbt.lvds_ssc_freq;
7976                         DRM_DEBUG_KMS("using SSC reference clock of %d kHz\n", refclk);
7977                 }
7978
7979                 limit = &intel_limits_pineview_lvds;
7980         } else {
7981                 limit = &intel_limits_pineview_sdvo;
7982         }
7983
7984         if (!crtc_state->clock_set &&
7985             !pnv_find_best_dpll(limit, crtc_state, crtc_state->port_clock,
7986                                 refclk, NULL, &crtc_state->dpll)) {
7987                 DRM_ERROR("Couldn't find PLL settings for mode!\n");
7988                 return -EINVAL;
7989         }
7990
7991         i9xx_compute_dpll(crtc, crtc_state, NULL);
7992
7993         return 0;
7994 }
7995
7996 static int i9xx_crtc_compute_clock(struct intel_crtc *crtc,
7997                                    struct intel_crtc_state *crtc_state)
7998 {
7999         struct drm_device *dev = crtc->base.dev;
8000         struct drm_i915_private *dev_priv = to_i915(dev);
8001         const struct intel_limit *limit;
8002         int refclk = 96000;
8003
8004         memset(&crtc_state->dpll_hw_state, 0,
8005                sizeof(crtc_state->dpll_hw_state));
8006
8007         if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS)) {
8008                 if (intel_panel_use_ssc(dev_priv)) {
8009                         refclk = dev_priv->vbt.lvds_ssc_freq;
8010                         DRM_DEBUG_KMS("using SSC reference clock of %d kHz\n", refclk);
8011                 }
8012
8013                 limit = &intel_limits_i9xx_lvds;
8014         } else {
8015                 limit = &intel_limits_i9xx_sdvo;
8016         }
8017
8018         if (!crtc_state->clock_set &&
8019             !i9xx_find_best_dpll(limit, crtc_state, crtc_state->port_clock,
8020                                  refclk, NULL, &crtc_state->dpll)) {
8021                 DRM_ERROR("Couldn't find PLL settings for mode!\n");
8022                 return -EINVAL;
8023         }
8024
8025         i9xx_compute_dpll(crtc, crtc_state, NULL);
8026
8027         return 0;
8028 }
8029
8030 static int chv_crtc_compute_clock(struct intel_crtc *crtc,
8031                                   struct intel_crtc_state *crtc_state)
8032 {
8033         int refclk = 100000;
8034         const struct intel_limit *limit = &intel_limits_chv;
8035
8036         memset(&crtc_state->dpll_hw_state, 0,
8037                sizeof(crtc_state->dpll_hw_state));
8038
8039         if (!crtc_state->clock_set &&
8040             !chv_find_best_dpll(limit, crtc_state, crtc_state->port_clock,
8041                                 refclk, NULL, &crtc_state->dpll)) {
8042                 DRM_ERROR("Couldn't find PLL settings for mode!\n");
8043                 return -EINVAL;
8044         }
8045
8046         chv_compute_dpll(crtc, crtc_state);
8047
8048         return 0;
8049 }
8050
8051 static int vlv_crtc_compute_clock(struct intel_crtc *crtc,
8052                                   struct intel_crtc_state *crtc_state)
8053 {
8054         int refclk = 100000;
8055         const struct intel_limit *limit = &intel_limits_vlv;
8056
8057         memset(&crtc_state->dpll_hw_state, 0,
8058                sizeof(crtc_state->dpll_hw_state));
8059
8060         if (!crtc_state->clock_set &&
8061             !vlv_find_best_dpll(limit, crtc_state, crtc_state->port_clock,
8062                                 refclk, NULL, &crtc_state->dpll)) {
8063                 DRM_ERROR("Couldn't find PLL settings for mode!\n");
8064                 return -EINVAL;
8065         }
8066
8067         vlv_compute_dpll(crtc, crtc_state);
8068
8069         return 0;
8070 }
8071
8072 static bool i9xx_has_pfit(struct drm_i915_private *dev_priv)
8073 {
8074         if (IS_I830(dev_priv))
8075                 return false;
8076
8077         return INTEL_GEN(dev_priv) >= 4 ||
8078                 IS_PINEVIEW(dev_priv) || IS_MOBILE(dev_priv);
8079 }
8080
8081 static void i9xx_get_pfit_config(struct intel_crtc *crtc,
8082                                  struct intel_crtc_state *pipe_config)
8083 {
8084         struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
8085         u32 tmp;
8086
8087         if (!i9xx_has_pfit(dev_priv))
8088                 return;
8089
8090         tmp = I915_READ(PFIT_CONTROL);
8091         if (!(tmp & PFIT_ENABLE))
8092                 return;
8093
8094         /* Check whether the pfit is attached to our pipe. */
8095         if (INTEL_GEN(dev_priv) < 4) {
8096                 if (crtc->pipe != PIPE_B)
8097                         return;
8098         } else {
8099                 if ((tmp & PFIT_PIPE_MASK) != (crtc->pipe << PFIT_PIPE_SHIFT))
8100                         return;
8101         }
8102
8103         pipe_config->gmch_pfit.control = tmp;
8104         pipe_config->gmch_pfit.pgm_ratios = I915_READ(PFIT_PGM_RATIOS);
8105 }
8106
8107 static void vlv_crtc_clock_get(struct intel_crtc *crtc,
8108                                struct intel_crtc_state *pipe_config)
8109 {
8110         struct drm_device *dev = crtc->base.dev;
8111         struct drm_i915_private *dev_priv = to_i915(dev);
8112         int pipe = pipe_config->cpu_transcoder;
8113         struct dpll clock;
8114         u32 mdiv;
8115         int refclk = 100000;
8116
8117         /* In case of DSI, DPLL will not be used */
8118         if ((pipe_config->dpll_hw_state.dpll & DPLL_VCO_ENABLE) == 0)
8119                 return;
8120
8121         vlv_dpio_get(dev_priv);
8122         mdiv = vlv_dpio_read(dev_priv, pipe, VLV_PLL_DW3(pipe));
8123         vlv_dpio_put(dev_priv);
8124
8125         clock.m1 = (mdiv >> DPIO_M1DIV_SHIFT) & 7;
8126         clock.m2 = mdiv & DPIO_M2DIV_MASK;
8127         clock.n = (mdiv >> DPIO_N_SHIFT) & 0xf;
8128         clock.p1 = (mdiv >> DPIO_P1_SHIFT) & 7;
8129         clock.p2 = (mdiv >> DPIO_P2_SHIFT) & 0x1f;
8130
8131         pipe_config->port_clock = vlv_calc_dpll_params(refclk, &clock);
8132 }
8133
8134 static void
8135 i9xx_get_initial_plane_config(struct intel_crtc *crtc,
8136                               struct intel_initial_plane_config *plane_config)
8137 {
8138         struct drm_device *dev = crtc->base.dev;
8139         struct drm_i915_private *dev_priv = to_i915(dev);
8140         struct intel_plane *plane = to_intel_plane(crtc->base.primary);
8141         enum i9xx_plane_id i9xx_plane = plane->i9xx_plane;
8142         enum pipe pipe;
8143         u32 val, base, offset;
8144         int fourcc, pixel_format;
8145         unsigned int aligned_height;
8146         struct drm_framebuffer *fb;
8147         struct intel_framebuffer *intel_fb;
8148
8149         if (!plane->get_hw_state(plane, &pipe))
8150                 return;
8151
8152         WARN_ON(pipe != crtc->pipe);
8153
8154         intel_fb = kzalloc(sizeof(*intel_fb), GFP_KERNEL);
8155         if (!intel_fb) {
8156                 DRM_DEBUG_KMS("failed to alloc fb\n");
8157                 return;
8158         }
8159
8160         fb = &intel_fb->base;
8161
8162         fb->dev = dev;
8163
8164         val = I915_READ(DSPCNTR(i9xx_plane));
8165
8166         if (INTEL_GEN(dev_priv) >= 4) {
8167                 if (val & DISPPLANE_TILED) {
8168                         plane_config->tiling = I915_TILING_X;
8169                         fb->modifier = I915_FORMAT_MOD_X_TILED;
8170                 }
8171
8172                 if (val & DISPPLANE_ROTATE_180)
8173                         plane_config->rotation = DRM_MODE_ROTATE_180;
8174         }
8175
8176         if (IS_CHERRYVIEW(dev_priv) && pipe == PIPE_B &&
8177             val & DISPPLANE_MIRROR)
8178                 plane_config->rotation |= DRM_MODE_REFLECT_X;
8179
8180         pixel_format = val & DISPPLANE_PIXFORMAT_MASK;
8181         fourcc = i9xx_format_to_fourcc(pixel_format);
8182         fb->format = drm_format_info(fourcc);
8183
8184         if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv)) {
8185                 offset = I915_READ(DSPOFFSET(i9xx_plane));
8186                 base = I915_READ(DSPSURF(i9xx_plane)) & 0xfffff000;
8187         } else if (INTEL_GEN(dev_priv) >= 4) {
8188                 if (plane_config->tiling)
8189                         offset = I915_READ(DSPTILEOFF(i9xx_plane));
8190                 else
8191                         offset = I915_READ(DSPLINOFF(i9xx_plane));
8192                 base = I915_READ(DSPSURF(i9xx_plane)) & 0xfffff000;
8193         } else {
8194                 base = I915_READ(DSPADDR(i9xx_plane));
8195         }
8196         plane_config->base = base;
8197
8198         val = I915_READ(PIPESRC(pipe));
8199         fb->width = ((val >> 16) & 0xfff) + 1;
8200         fb->height = ((val >> 0) & 0xfff) + 1;
8201
8202         val = I915_READ(DSPSTRIDE(i9xx_plane));
8203         fb->pitches[0] = val & 0xffffffc0;
8204
8205         aligned_height = intel_fb_align_height(fb, 0, fb->height);
8206
8207         plane_config->size = fb->pitches[0] * aligned_height;
8208
8209         DRM_DEBUG_KMS("%s/%s with fb: size=%dx%d@%d, offset=%x, pitch %d, size 0x%x\n",
8210                       crtc->base.name, plane->base.name, fb->width, fb->height,
8211                       fb->format->cpp[0] * 8, base, fb->pitches[0],
8212                       plane_config->size);
8213
8214         plane_config->fb = intel_fb;
8215 }
8216
8217 static void chv_crtc_clock_get(struct intel_crtc *crtc,
8218                                struct intel_crtc_state *pipe_config)
8219 {
8220         struct drm_device *dev = crtc->base.dev;
8221         struct drm_i915_private *dev_priv = to_i915(dev);
8222         int pipe = pipe_config->cpu_transcoder;
8223         enum dpio_channel port = vlv_pipe_to_channel(pipe);
8224         struct dpll clock;
8225         u32 cmn_dw13, pll_dw0, pll_dw1, pll_dw2, pll_dw3;
8226         int refclk = 100000;
8227
8228         /* In case of DSI, DPLL will not be used */
8229         if ((pipe_config->dpll_hw_state.dpll & DPLL_VCO_ENABLE) == 0)
8230                 return;
8231
8232         vlv_dpio_get(dev_priv);
8233         cmn_dw13 = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW13(port));
8234         pll_dw0 = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW0(port));
8235         pll_dw1 = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW1(port));
8236         pll_dw2 = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW2(port));
8237         pll_dw3 = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW3(port));
8238         vlv_dpio_put(dev_priv);
8239
8240         clock.m1 = (pll_dw1 & 0x7) == DPIO_CHV_M1_DIV_BY_2 ? 2 : 0;
8241         clock.m2 = (pll_dw0 & 0xff) << 22;
8242         if (pll_dw3 & DPIO_CHV_FRAC_DIV_EN)
8243                 clock.m2 |= pll_dw2 & 0x3fffff;
8244         clock.n = (pll_dw1 >> DPIO_CHV_N_DIV_SHIFT) & 0xf;
8245         clock.p1 = (cmn_dw13 >> DPIO_CHV_P1_DIV_SHIFT) & 0x7;
8246         clock.p2 = (cmn_dw13 >> DPIO_CHV_P2_DIV_SHIFT) & 0x1f;
8247
8248         pipe_config->port_clock = chv_calc_dpll_params(refclk, &clock);
8249 }
8250
8251 static void intel_get_crtc_ycbcr_config(struct intel_crtc *crtc,
8252                                         struct intel_crtc_state *pipe_config)
8253 {
8254         struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
8255         enum intel_output_format output = INTEL_OUTPUT_FORMAT_RGB;
8256
8257         pipe_config->lspcon_downsampling = false;
8258
8259         if (IS_BROADWELL(dev_priv) || INTEL_GEN(dev_priv) >= 9) {
8260                 u32 tmp = I915_READ(PIPEMISC(crtc->pipe));
8261
8262                 if (tmp & PIPEMISC_OUTPUT_COLORSPACE_YUV) {
8263                         bool ycbcr420_enabled = tmp & PIPEMISC_YUV420_ENABLE;
8264                         bool blend = tmp & PIPEMISC_YUV420_MODE_FULL_BLEND;
8265
8266                         if (ycbcr420_enabled) {
8267                                 /* We support 4:2:0 in full blend mode only */
8268                                 if (!blend)
8269                                         output = INTEL_OUTPUT_FORMAT_INVALID;
8270                                 else if (!(IS_GEMINILAKE(dev_priv) ||
8271                                            INTEL_GEN(dev_priv) >= 10))
8272                                         output = INTEL_OUTPUT_FORMAT_INVALID;
8273                                 else
8274                                         output = INTEL_OUTPUT_FORMAT_YCBCR420;
8275                         } else {
8276                                 /*
8277                                  * Currently there is no interface defined to
8278                                  * check user preference between RGB/YCBCR444
8279                                  * or YCBCR420. So the only possible case for
8280                                  * YCBCR444 usage is driving YCBCR420 output
8281                                  * with LSPCON, when pipe is configured for
8282                                  * YCBCR444 output and LSPCON takes care of
8283                                  * downsampling it.
8284                                  */
8285                                 pipe_config->lspcon_downsampling = true;
8286                                 output = INTEL_OUTPUT_FORMAT_YCBCR444;
8287                         }
8288                 }
8289         }
8290
8291         pipe_config->output_format = output;
8292 }
8293
8294 static void i9xx_get_pipe_color_config(struct intel_crtc_state *crtc_state)
8295 {
8296         struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
8297         struct intel_plane *plane = to_intel_plane(crtc->base.primary);
8298         struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
8299         enum i9xx_plane_id i9xx_plane = plane->i9xx_plane;
8300         u32 tmp;
8301
8302         tmp = I915_READ(DSPCNTR(i9xx_plane));
8303
8304         if (tmp & DISPPLANE_GAMMA_ENABLE)
8305                 crtc_state->gamma_enable = true;
8306
8307         if (!HAS_GMCH(dev_priv) &&
8308             tmp & DISPPLANE_PIPE_CSC_ENABLE)
8309                 crtc_state->csc_enable = true;
8310 }
8311
8312 static bool i9xx_get_pipe_config(struct intel_crtc *crtc,
8313                                  struct intel_crtc_state *pipe_config)
8314 {
8315         struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
8316         enum intel_display_power_domain power_domain;
8317         intel_wakeref_t wakeref;
8318         u32 tmp;
8319         bool ret;
8320
8321         power_domain = POWER_DOMAIN_PIPE(crtc->pipe);
8322         wakeref = intel_display_power_get_if_enabled(dev_priv, power_domain);
8323         if (!wakeref)
8324                 return false;
8325
8326         pipe_config->output_format = INTEL_OUTPUT_FORMAT_RGB;
8327         pipe_config->cpu_transcoder = (enum transcoder) crtc->pipe;
8328         pipe_config->shared_dpll = NULL;
8329
8330         ret = false;
8331
8332         tmp = I915_READ(PIPECONF(crtc->pipe));
8333         if (!(tmp & PIPECONF_ENABLE))
8334                 goto out;
8335
8336         if (IS_G4X(dev_priv) || IS_VALLEYVIEW(dev_priv) ||
8337             IS_CHERRYVIEW(dev_priv)) {
8338                 switch (tmp & PIPECONF_BPC_MASK) {
8339                 case PIPECONF_6BPC:
8340                         pipe_config->pipe_bpp = 18;
8341                         break;
8342                 case PIPECONF_8BPC:
8343                         pipe_config->pipe_bpp = 24;
8344                         break;
8345                 case PIPECONF_10BPC:
8346                         pipe_config->pipe_bpp = 30;
8347                         break;
8348                 default:
8349                         break;
8350                 }
8351         }
8352
8353         if ((IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) &&
8354             (tmp & PIPECONF_COLOR_RANGE_SELECT))
8355                 pipe_config->limited_color_range = true;
8356
8357         pipe_config->gamma_mode = (tmp & PIPECONF_GAMMA_MODE_MASK_I9XX) >>
8358                 PIPECONF_GAMMA_MODE_SHIFT;
8359
8360         if (IS_CHERRYVIEW(dev_priv))
8361                 pipe_config->cgm_mode = I915_READ(CGM_PIPE_MODE(crtc->pipe));
8362
8363         i9xx_get_pipe_color_config(pipe_config);
8364
8365         if (INTEL_GEN(dev_priv) < 4)
8366                 pipe_config->double_wide = tmp & PIPECONF_DOUBLE_WIDE;
8367
8368         intel_get_pipe_timings(crtc, pipe_config);
8369         intel_get_pipe_src_size(crtc, pipe_config);
8370
8371         i9xx_get_pfit_config(crtc, pipe_config);
8372
8373         if (INTEL_GEN(dev_priv) >= 4) {
8374                 /* No way to read it out on pipes B and C */
8375                 if (IS_CHERRYVIEW(dev_priv) && crtc->pipe != PIPE_A)
8376                         tmp = dev_priv->chv_dpll_md[crtc->pipe];
8377                 else
8378                         tmp = I915_READ(DPLL_MD(crtc->pipe));
8379                 pipe_config->pixel_multiplier =
8380                         ((tmp & DPLL_MD_UDI_MULTIPLIER_MASK)
8381                          >> DPLL_MD_UDI_MULTIPLIER_SHIFT) + 1;
8382                 pipe_config->dpll_hw_state.dpll_md = tmp;
8383         } else if (IS_I945G(dev_priv) || IS_I945GM(dev_priv) ||
8384                    IS_G33(dev_priv) || IS_PINEVIEW(dev_priv)) {
8385                 tmp = I915_READ(DPLL(crtc->pipe));
8386                 pipe_config->pixel_multiplier =
8387                         ((tmp & SDVO_MULTIPLIER_MASK)
8388                          >> SDVO_MULTIPLIER_SHIFT_HIRES) + 1;
8389         } else {
8390                 /* Note that on i915G/GM the pixel multiplier is in the sdvo
8391                  * port and will be fixed up in the encoder->get_config
8392                  * function. */
8393                 pipe_config->pixel_multiplier = 1;
8394         }
8395         pipe_config->dpll_hw_state.dpll = I915_READ(DPLL(crtc->pipe));
8396         if (!IS_VALLEYVIEW(dev_priv) && !IS_CHERRYVIEW(dev_priv)) {
8397                 pipe_config->dpll_hw_state.fp0 = I915_READ(FP0(crtc->pipe));
8398                 pipe_config->dpll_hw_state.fp1 = I915_READ(FP1(crtc->pipe));
8399         } else {
8400                 /* Mask out read-only status bits. */
8401                 pipe_config->dpll_hw_state.dpll &= ~(DPLL_LOCK_VLV |
8402                                                      DPLL_PORTC_READY_MASK |
8403                                                      DPLL_PORTB_READY_MASK);
8404         }
8405
8406         if (IS_CHERRYVIEW(dev_priv))
8407                 chv_crtc_clock_get(crtc, pipe_config);
8408         else if (IS_VALLEYVIEW(dev_priv))
8409                 vlv_crtc_clock_get(crtc, pipe_config);
8410         else
8411                 i9xx_crtc_clock_get(crtc, pipe_config);
8412
8413         /*
8414          * Normally the dotclock is filled in by the encoder .get_config()
8415          * but in case the pipe is enabled w/o any ports we need a sane
8416          * default.
8417          */
8418         pipe_config->base.adjusted_mode.crtc_clock =
8419                 pipe_config->port_clock / pipe_config->pixel_multiplier;
8420
8421         ret = true;
8422
8423 out:
8424         intel_display_power_put(dev_priv, power_domain, wakeref);
8425
8426         return ret;
8427 }
8428
8429 static void ironlake_init_pch_refclk(struct drm_i915_private *dev_priv)
8430 {
8431         struct intel_encoder *encoder;
8432         int i;
8433         u32 val, final;
8434         bool has_lvds = false;
8435         bool has_cpu_edp = false;
8436         bool has_panel = false;
8437         bool has_ck505 = false;
8438         bool can_ssc = false;
8439         bool using_ssc_source = false;
8440
8441         /* We need to take the global config into account */
8442         for_each_intel_encoder(&dev_priv->drm, encoder) {
8443                 switch (encoder->type) {
8444                 case INTEL_OUTPUT_LVDS:
8445                         has_panel = true;
8446                         has_lvds = true;
8447                         break;
8448                 case INTEL_OUTPUT_EDP:
8449                         has_panel = true;
8450                         if (encoder->port == PORT_A)
8451                                 has_cpu_edp = true;
8452                         break;
8453                 default:
8454                         break;
8455                 }
8456         }
8457
8458         if (HAS_PCH_IBX(dev_priv)) {
8459                 has_ck505 = dev_priv->vbt.display_clock_mode;
8460                 can_ssc = has_ck505;
8461         } else {
8462                 has_ck505 = false;
8463                 can_ssc = true;
8464         }
8465
8466         /* Check if any DPLLs are using the SSC source */
8467         for (i = 0; i < dev_priv->num_shared_dpll; i++) {
8468                 u32 temp = I915_READ(PCH_DPLL(i));
8469
8470                 if (!(temp & DPLL_VCO_ENABLE))
8471                         continue;
8472
8473                 if ((temp & PLL_REF_INPUT_MASK) ==
8474                     PLLB_REF_INPUT_SPREADSPECTRUMIN) {
8475                         using_ssc_source = true;
8476                         break;
8477                 }
8478         }
8479
8480         DRM_DEBUG_KMS("has_panel %d has_lvds %d has_ck505 %d using_ssc_source %d\n",
8481                       has_panel, has_lvds, has_ck505, using_ssc_source);
8482
8483         /* Ironlake: try to setup display ref clock before DPLL
8484          * enabling. This is only under driver's control after
8485          * PCH B stepping, previous chipset stepping should be
8486          * ignoring this setting.
8487          */
8488         val = I915_READ(PCH_DREF_CONTROL);
8489
8490         /* As we must carefully and slowly disable/enable each source in turn,
8491          * compute the final state we want first and check if we need to
8492          * make any changes at all.
8493          */
8494         final = val;
8495         final &= ~DREF_NONSPREAD_SOURCE_MASK;
8496         if (has_ck505)
8497                 final |= DREF_NONSPREAD_CK505_ENABLE;
8498         else
8499                 final |= DREF_NONSPREAD_SOURCE_ENABLE;
8500
8501         final &= ~DREF_SSC_SOURCE_MASK;
8502         final &= ~DREF_CPU_SOURCE_OUTPUT_MASK;
8503         final &= ~DREF_SSC1_ENABLE;
8504
8505         if (has_panel) {
8506                 final |= DREF_SSC_SOURCE_ENABLE;
8507
8508                 if (intel_panel_use_ssc(dev_priv) && can_ssc)
8509                         final |= DREF_SSC1_ENABLE;
8510
8511                 if (has_cpu_edp) {
8512                         if (intel_panel_use_ssc(dev_priv) && can_ssc)
8513                                 final |= DREF_CPU_SOURCE_OUTPUT_DOWNSPREAD;
8514                         else
8515                                 final |= DREF_CPU_SOURCE_OUTPUT_NONSPREAD;
8516                 } else
8517                         final |= DREF_CPU_SOURCE_OUTPUT_DISABLE;
8518         } else if (using_ssc_source) {
8519                 final |= DREF_SSC_SOURCE_ENABLE;
8520                 final |= DREF_SSC1_ENABLE;
8521         }
8522
8523         if (final == val)
8524                 return;
8525
8526         /* Always enable nonspread source */
8527         val &= ~DREF_NONSPREAD_SOURCE_MASK;
8528
8529         if (has_ck505)
8530                 val |= DREF_NONSPREAD_CK505_ENABLE;
8531         else
8532                 val |= DREF_NONSPREAD_SOURCE_ENABLE;
8533
8534         if (has_panel) {
8535                 val &= ~DREF_SSC_SOURCE_MASK;
8536                 val |= DREF_SSC_SOURCE_ENABLE;
8537
8538                 /* SSC must be turned on before enabling the CPU output  */
8539                 if (intel_panel_use_ssc(dev_priv) && can_ssc) {
8540                         DRM_DEBUG_KMS("Using SSC on panel\n");
8541                         val |= DREF_SSC1_ENABLE;
8542                 } else
8543                         val &= ~DREF_SSC1_ENABLE;
8544
8545                 /* Get SSC going before enabling the outputs */
8546                 I915_WRITE(PCH_DREF_CONTROL, val);
8547                 POSTING_READ(PCH_DREF_CONTROL);
8548                 udelay(200);
8549
8550                 val &= ~DREF_CPU_SOURCE_OUTPUT_MASK;
8551
8552                 /* Enable CPU source on CPU attached eDP */
8553                 if (has_cpu_edp) {
8554                         if (intel_panel_use_ssc(dev_priv) && can_ssc) {
8555                                 DRM_DEBUG_KMS("Using SSC on eDP\n");
8556                                 val |= DREF_CPU_SOURCE_OUTPUT_DOWNSPREAD;
8557                         } else
8558                                 val |= DREF_CPU_SOURCE_OUTPUT_NONSPREAD;
8559                 } else
8560                         val |= DREF_CPU_SOURCE_OUTPUT_DISABLE;
8561
8562                 I915_WRITE(PCH_DREF_CONTROL, val);
8563                 POSTING_READ(PCH_DREF_CONTROL);
8564                 udelay(200);
8565         } else {
8566                 DRM_DEBUG_KMS("Disabling CPU source output\n");
8567
8568                 val &= ~DREF_CPU_SOURCE_OUTPUT_MASK;
8569
8570                 /* Turn off CPU output */
8571                 val |= DREF_CPU_SOURCE_OUTPUT_DISABLE;
8572
8573                 I915_WRITE(PCH_DREF_CONTROL, val);
8574                 POSTING_READ(PCH_DREF_CONTROL);
8575                 udelay(200);
8576
8577                 if (!using_ssc_source) {
8578                         DRM_DEBUG_KMS("Disabling SSC source\n");
8579
8580                         /* Turn off the SSC source */
8581                         val &= ~DREF_SSC_SOURCE_MASK;
8582                         val |= DREF_SSC_SOURCE_DISABLE;
8583
8584                         /* Turn off SSC1 */
8585                         val &= ~DREF_SSC1_ENABLE;
8586
8587                         I915_WRITE(PCH_DREF_CONTROL, val);
8588                         POSTING_READ(PCH_DREF_CONTROL);
8589                         udelay(200);
8590                 }
8591         }
8592
8593         BUG_ON(val != final);
8594 }
8595
8596 static void lpt_reset_fdi_mphy(struct drm_i915_private *dev_priv)
8597 {
8598         u32 tmp;
8599
8600         tmp = I915_READ(SOUTH_CHICKEN2);
8601         tmp |= FDI_MPHY_IOSFSB_RESET_CTL;
8602         I915_WRITE(SOUTH_CHICKEN2, tmp);
8603
8604         if (wait_for_us(I915_READ(SOUTH_CHICKEN2) &
8605                         FDI_MPHY_IOSFSB_RESET_STATUS, 100))
8606                 DRM_ERROR("FDI mPHY reset assert timeout\n");
8607
8608         tmp = I915_READ(SOUTH_CHICKEN2);
8609         tmp &= ~FDI_MPHY_IOSFSB_RESET_CTL;
8610         I915_WRITE(SOUTH_CHICKEN2, tmp);
8611
8612         if (wait_for_us((I915_READ(SOUTH_CHICKEN2) &
8613                          FDI_MPHY_IOSFSB_RESET_STATUS) == 0, 100))
8614                 DRM_ERROR("FDI mPHY reset de-assert timeout\n");
8615 }
8616
8617 /* WaMPhyProgramming:hsw */
8618 static void lpt_program_fdi_mphy(struct drm_i915_private *dev_priv)
8619 {
8620         u32 tmp;
8621
8622         tmp = intel_sbi_read(dev_priv, 0x8008, SBI_MPHY);
8623         tmp &= ~(0xFF << 24);
8624         tmp |= (0x12 << 24);
8625         intel_sbi_write(dev_priv, 0x8008, tmp, SBI_MPHY);
8626
8627         tmp = intel_sbi_read(dev_priv, 0x2008, SBI_MPHY);
8628         tmp |= (1 << 11);
8629         intel_sbi_write(dev_priv, 0x2008, tmp, SBI_MPHY);
8630
8631         tmp = intel_sbi_read(dev_priv, 0x2108, SBI_MPHY);
8632         tmp |= (1 << 11);
8633         intel_sbi_write(dev_priv, 0x2108, tmp, SBI_MPHY);
8634
8635         tmp = intel_sbi_read(dev_priv, 0x206C, SBI_MPHY);
8636         tmp |= (1 << 24) | (1 << 21) | (1 << 18);
8637         intel_sbi_write(dev_priv, 0x206C, tmp, SBI_MPHY);
8638
8639         tmp = intel_sbi_read(dev_priv, 0x216C, SBI_MPHY);
8640         tmp |= (1 << 24) | (1 << 21) | (1 << 18);
8641         intel_sbi_write(dev_priv, 0x216C, tmp, SBI_MPHY);
8642
8643         tmp = intel_sbi_read(dev_priv, 0x2080, SBI_MPHY);
8644         tmp &= ~(7 << 13);
8645         tmp |= (5 << 13);
8646         intel_sbi_write(dev_priv, 0x2080, tmp, SBI_MPHY);
8647
8648         tmp = intel_sbi_read(dev_priv, 0x2180, SBI_MPHY);
8649         tmp &= ~(7 << 13);
8650         tmp |= (5 << 13);
8651         intel_sbi_write(dev_priv, 0x2180, tmp, SBI_MPHY);
8652
8653         tmp = intel_sbi_read(dev_priv, 0x208C, SBI_MPHY);
8654         tmp &= ~0xFF;
8655         tmp |= 0x1C;
8656         intel_sbi_write(dev_priv, 0x208C, tmp, SBI_MPHY);
8657
8658         tmp = intel_sbi_read(dev_priv, 0x218C, SBI_MPHY);
8659         tmp &= ~0xFF;
8660         tmp |= 0x1C;
8661         intel_sbi_write(dev_priv, 0x218C, tmp, SBI_MPHY);
8662
8663         tmp = intel_sbi_read(dev_priv, 0x2098, SBI_MPHY);
8664         tmp &= ~(0xFF << 16);
8665         tmp |= (0x1C << 16);
8666         intel_sbi_write(dev_priv, 0x2098, tmp, SBI_MPHY);
8667
8668         tmp = intel_sbi_read(dev_priv, 0x2198, SBI_MPHY);
8669         tmp &= ~(0xFF << 16);
8670         tmp |= (0x1C << 16);
8671         intel_sbi_write(dev_priv, 0x2198, tmp, SBI_MPHY);
8672
8673         tmp = intel_sbi_read(dev_priv, 0x20C4, SBI_MPHY);
8674         tmp |= (1 << 27);
8675         intel_sbi_write(dev_priv, 0x20C4, tmp, SBI_MPHY);
8676
8677         tmp = intel_sbi_read(dev_priv, 0x21C4, SBI_MPHY);
8678         tmp |= (1 << 27);
8679         intel_sbi_write(dev_priv, 0x21C4, tmp, SBI_MPHY);
8680
8681         tmp = intel_sbi_read(dev_priv, 0x20EC, SBI_MPHY);
8682         tmp &= ~(0xF << 28);
8683         tmp |= (4 << 28);
8684         intel_sbi_write(dev_priv, 0x20EC, tmp, SBI_MPHY);
8685
8686         tmp = intel_sbi_read(dev_priv, 0x21EC, SBI_MPHY);
8687         tmp &= ~(0xF << 28);
8688         tmp |= (4 << 28);
8689         intel_sbi_write(dev_priv, 0x21EC, tmp, SBI_MPHY);
8690 }
8691
8692 /* Implements 3 different sequences from BSpec chapter "Display iCLK
8693  * Programming" based on the parameters passed:
8694  * - Sequence to enable CLKOUT_DP
8695  * - Sequence to enable CLKOUT_DP without spread
8696  * - Sequence to enable CLKOUT_DP for FDI usage and configure PCH FDI I/O
8697  */
8698 static void lpt_enable_clkout_dp(struct drm_i915_private *dev_priv,
8699                                  bool with_spread, bool with_fdi)
8700 {
8701         u32 reg, tmp;
8702
8703         if (WARN(with_fdi && !with_spread, "FDI requires downspread\n"))
8704                 with_spread = true;
8705         if (WARN(HAS_PCH_LPT_LP(dev_priv) &&
8706             with_fdi, "LP PCH doesn't have FDI\n"))
8707                 with_fdi = false;
8708
8709         mutex_lock(&dev_priv->sb_lock);
8710
8711         tmp = intel_sbi_read(dev_priv, SBI_SSCCTL, SBI_ICLK);
8712         tmp &= ~SBI_SSCCTL_DISABLE;
8713         tmp |= SBI_SSCCTL_PATHALT;
8714         intel_sbi_write(dev_priv, SBI_SSCCTL, tmp, SBI_ICLK);
8715
8716         udelay(24);
8717
8718         if (with_spread) {
8719                 tmp = intel_sbi_read(dev_priv, SBI_SSCCTL, SBI_ICLK);
8720                 tmp &= ~SBI_SSCCTL_PATHALT;
8721                 intel_sbi_write(dev_priv, SBI_SSCCTL, tmp, SBI_ICLK);
8722
8723                 if (with_fdi) {
8724                         lpt_reset_fdi_mphy(dev_priv);
8725                         lpt_program_fdi_mphy(dev_priv);
8726                 }
8727         }
8728
8729         reg = HAS_PCH_LPT_LP(dev_priv) ? SBI_GEN0 : SBI_DBUFF0;
8730         tmp = intel_sbi_read(dev_priv, reg, SBI_ICLK);
8731         tmp |= SBI_GEN0_CFG_BUFFENABLE_DISABLE;
8732         intel_sbi_write(dev_priv, reg, tmp, SBI_ICLK);
8733
8734         mutex_unlock(&dev_priv->sb_lock);
8735 }
8736
8737 /* Sequence to disable CLKOUT_DP */
8738 void lpt_disable_clkout_dp(struct drm_i915_private *dev_priv)
8739 {
8740         u32 reg, tmp;
8741
8742         mutex_lock(&dev_priv->sb_lock);
8743
8744         reg = HAS_PCH_LPT_LP(dev_priv) ? SBI_GEN0 : SBI_DBUFF0;
8745         tmp = intel_sbi_read(dev_priv, reg, SBI_ICLK);
8746         tmp &= ~SBI_GEN0_CFG_BUFFENABLE_DISABLE;
8747         intel_sbi_write(dev_priv, reg, tmp, SBI_ICLK);
8748
8749         tmp = intel_sbi_read(dev_priv, SBI_SSCCTL, SBI_ICLK);
8750         if (!(tmp & SBI_SSCCTL_DISABLE)) {
8751                 if (!(tmp & SBI_SSCCTL_PATHALT)) {
8752                         tmp |= SBI_SSCCTL_PATHALT;
8753                         intel_sbi_write(dev_priv, SBI_SSCCTL, tmp, SBI_ICLK);
8754                         udelay(32);
8755                 }
8756                 tmp |= SBI_SSCCTL_DISABLE;
8757                 intel_sbi_write(dev_priv, SBI_SSCCTL, tmp, SBI_ICLK);
8758         }
8759
8760         mutex_unlock(&dev_priv->sb_lock);
8761 }
8762
8763 #define BEND_IDX(steps) ((50 + (steps)) / 5)
8764
8765 static const u16 sscdivintphase[] = {
8766         [BEND_IDX( 50)] = 0x3B23,
8767         [BEND_IDX( 45)] = 0x3B23,
8768         [BEND_IDX( 40)] = 0x3C23,
8769         [BEND_IDX( 35)] = 0x3C23,
8770         [BEND_IDX( 30)] = 0x3D23,
8771         [BEND_IDX( 25)] = 0x3D23,
8772         [BEND_IDX( 20)] = 0x3E23,
8773         [BEND_IDX( 15)] = 0x3E23,
8774         [BEND_IDX( 10)] = 0x3F23,
8775         [BEND_IDX(  5)] = 0x3F23,
8776         [BEND_IDX(  0)] = 0x0025,
8777         [BEND_IDX( -5)] = 0x0025,
8778         [BEND_IDX(-10)] = 0x0125,
8779         [BEND_IDX(-15)] = 0x0125,
8780         [BEND_IDX(-20)] = 0x0225,
8781         [BEND_IDX(-25)] = 0x0225,
8782         [BEND_IDX(-30)] = 0x0325,
8783         [BEND_IDX(-35)] = 0x0325,
8784         [BEND_IDX(-40)] = 0x0425,
8785         [BEND_IDX(-45)] = 0x0425,
8786         [BEND_IDX(-50)] = 0x0525,
8787 };
8788
8789 /*
8790  * Bend CLKOUT_DP
8791  * steps -50 to 50 inclusive, in steps of 5
8792  * < 0 slow down the clock, > 0 speed up the clock, 0 == no bend (135MHz)
8793  * change in clock period = -(steps / 10) * 5.787 ps
8794  */
8795 static void lpt_bend_clkout_dp(struct drm_i915_private *dev_priv, int steps)
8796 {
8797         u32 tmp;
8798         int idx = BEND_IDX(steps);
8799
8800         if (WARN_ON(steps % 5 != 0))
8801                 return;
8802
8803         if (WARN_ON(idx >= ARRAY_SIZE(sscdivintphase)))
8804                 return;
8805
8806         mutex_lock(&dev_priv->sb_lock);
8807
8808         if (steps % 10 != 0)
8809                 tmp = 0xAAAAAAAB;
8810         else
8811                 tmp = 0x00000000;
8812         intel_sbi_write(dev_priv, SBI_SSCDITHPHASE, tmp, SBI_ICLK);
8813
8814         tmp = intel_sbi_read(dev_priv, SBI_SSCDIVINTPHASE, SBI_ICLK);
8815         tmp &= 0xffff0000;
8816         tmp |= sscdivintphase[idx];
8817         intel_sbi_write(dev_priv, SBI_SSCDIVINTPHASE, tmp, SBI_ICLK);
8818
8819         mutex_unlock(&dev_priv->sb_lock);
8820 }
8821
8822 #undef BEND_IDX
8823
8824 static void lpt_init_pch_refclk(struct drm_i915_private *dev_priv)
8825 {
8826         struct intel_encoder *encoder;
8827         bool has_vga = false;
8828
8829         for_each_intel_encoder(&dev_priv->drm, encoder) {
8830                 switch (encoder->type) {
8831                 case INTEL_OUTPUT_ANALOG:
8832                         has_vga = true;
8833                         break;
8834                 default:
8835                         break;
8836                 }
8837         }
8838
8839         if (has_vga) {
8840                 lpt_bend_clkout_dp(dev_priv, 0);
8841                 lpt_enable_clkout_dp(dev_priv, true, true);
8842         } else {
8843                 lpt_disable_clkout_dp(dev_priv);
8844         }
8845 }
8846
8847 /*
8848  * Initialize reference clocks when the driver loads
8849  */
8850 void intel_init_pch_refclk(struct drm_i915_private *dev_priv)
8851 {
8852         if (HAS_PCH_IBX(dev_priv) || HAS_PCH_CPT(dev_priv))
8853                 ironlake_init_pch_refclk(dev_priv);
8854         else if (HAS_PCH_LPT(dev_priv))
8855                 lpt_init_pch_refclk(dev_priv);
8856 }
8857
8858 static void ironlake_set_pipeconf(const struct intel_crtc_state *crtc_state)
8859 {
8860         struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
8861         struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
8862         enum pipe pipe = crtc->pipe;
8863         u32 val;
8864
8865         val = 0;
8866
8867         switch (crtc_state->pipe_bpp) {
8868         case 18:
8869                 val |= PIPECONF_6BPC;
8870                 break;
8871         case 24:
8872                 val |= PIPECONF_8BPC;
8873                 break;
8874         case 30:
8875                 val |= PIPECONF_10BPC;
8876                 break;
8877         case 36:
8878                 val |= PIPECONF_12BPC;
8879                 break;
8880         default:
8881                 /* Case prevented by intel_choose_pipe_bpp_dither. */
8882                 BUG();
8883         }
8884
8885         if (crtc_state->dither)
8886                 val |= (PIPECONF_DITHER_EN | PIPECONF_DITHER_TYPE_SP);
8887
8888         if (crtc_state->base.adjusted_mode.flags & DRM_MODE_FLAG_INTERLACE)
8889                 val |= PIPECONF_INTERLACED_ILK;
8890         else
8891                 val |= PIPECONF_PROGRESSIVE;
8892
8893         if (crtc_state->limited_color_range)
8894                 val |= PIPECONF_COLOR_RANGE_SELECT;
8895
8896         val |= PIPECONF_GAMMA_MODE(crtc_state->gamma_mode);
8897
8898         I915_WRITE(PIPECONF(pipe), val);
8899         POSTING_READ(PIPECONF(pipe));
8900 }
8901
8902 static void haswell_set_pipeconf(const struct intel_crtc_state *crtc_state)
8903 {
8904         struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
8905         struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
8906         enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
8907         u32 val = 0;
8908
8909         if (IS_HASWELL(dev_priv) && crtc_state->dither)
8910                 val |= (PIPECONF_DITHER_EN | PIPECONF_DITHER_TYPE_SP);
8911
8912         if (crtc_state->base.adjusted_mode.flags & DRM_MODE_FLAG_INTERLACE)
8913                 val |= PIPECONF_INTERLACED_ILK;
8914         else
8915                 val |= PIPECONF_PROGRESSIVE;
8916
8917         I915_WRITE(PIPECONF(cpu_transcoder), val);
8918         POSTING_READ(PIPECONF(cpu_transcoder));
8919 }
8920
8921 static void bdw_set_pipemisc(const struct intel_crtc_state *crtc_state)
8922 {
8923         struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
8924         struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
8925         u32 val = 0;
8926
8927         switch (crtc_state->pipe_bpp) {
8928         case 18:
8929                 val |= PIPEMISC_DITHER_6_BPC;
8930                 break;
8931         case 24:
8932                 val |= PIPEMISC_DITHER_8_BPC;
8933                 break;
8934         case 30:
8935                 val |= PIPEMISC_DITHER_10_BPC;
8936                 break;
8937         case 36:
8938                 val |= PIPEMISC_DITHER_12_BPC;
8939                 break;
8940         default:
8941                 MISSING_CASE(crtc_state->pipe_bpp);
8942                 break;
8943         }
8944
8945         if (crtc_state->dither)
8946                 val |= PIPEMISC_DITHER_ENABLE | PIPEMISC_DITHER_TYPE_SP;
8947
8948         if (crtc_state->output_format == INTEL_OUTPUT_FORMAT_YCBCR420 ||
8949             crtc_state->output_format == INTEL_OUTPUT_FORMAT_YCBCR444)
8950                 val |= PIPEMISC_OUTPUT_COLORSPACE_YUV;
8951
8952         if (crtc_state->output_format == INTEL_OUTPUT_FORMAT_YCBCR420)
8953                 val |= PIPEMISC_YUV420_ENABLE |
8954                         PIPEMISC_YUV420_MODE_FULL_BLEND;
8955
8956         if (INTEL_GEN(dev_priv) >= 11 &&
8957             (crtc_state->active_planes & ~(icl_hdr_plane_mask() |
8958                                            BIT(PLANE_CURSOR))) == 0)
8959                 val |= PIPEMISC_HDR_MODE_PRECISION;
8960
8961         I915_WRITE(PIPEMISC(crtc->pipe), val);
8962 }
8963
8964 int bdw_get_pipemisc_bpp(struct intel_crtc *crtc)
8965 {
8966         struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
8967         u32 tmp;
8968
8969         tmp = I915_READ(PIPEMISC(crtc->pipe));
8970
8971         switch (tmp & PIPEMISC_DITHER_BPC_MASK) {
8972         case PIPEMISC_DITHER_6_BPC:
8973                 return 18;
8974         case PIPEMISC_DITHER_8_BPC:
8975                 return 24;
8976         case PIPEMISC_DITHER_10_BPC:
8977                 return 30;
8978         case PIPEMISC_DITHER_12_BPC:
8979                 return 36;
8980         default:
8981                 MISSING_CASE(tmp);
8982                 return 0;
8983         }
8984 }
8985
8986 int ironlake_get_lanes_required(int target_clock, int link_bw, int bpp)
8987 {
8988         /*
8989          * Account for spread spectrum to avoid
8990          * oversubscribing the link. Max center spread
8991          * is 2.5%; use 5% for safety's sake.
8992          */
8993         u32 bps = target_clock * bpp * 21 / 20;
8994         return DIV_ROUND_UP(bps, link_bw * 8);
8995 }
8996
8997 static bool ironlake_needs_fb_cb_tune(struct dpll *dpll, int factor)
8998 {
8999         return i9xx_dpll_compute_m(dpll) < factor * dpll->n;
9000 }
9001
9002 static void ironlake_compute_dpll(struct intel_crtc *crtc,
9003                                   struct intel_crtc_state *crtc_state,
9004                                   struct dpll *reduced_clock)
9005 {
9006         struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
9007         u32 dpll, fp, fp2;
9008         int factor;
9009
9010         /* Enable autotuning of the PLL clock (if permissible) */
9011         factor = 21;
9012         if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS)) {
9013                 if ((intel_panel_use_ssc(dev_priv) &&
9014                      dev_priv->vbt.lvds_ssc_freq == 100000) ||
9015                     (HAS_PCH_IBX(dev_priv) &&
9016                      intel_is_dual_link_lvds(dev_priv)))
9017                         factor = 25;
9018         } else if (crtc_state->sdvo_tv_clock) {
9019                 factor = 20;
9020         }
9021
9022         fp = i9xx_dpll_compute_fp(&crtc_state->dpll);
9023
9024         if (ironlake_needs_fb_cb_tune(&crtc_state->dpll, factor))
9025                 fp |= FP_CB_TUNE;
9026
9027         if (reduced_clock) {
9028                 fp2 = i9xx_dpll_compute_fp(reduced_clock);
9029
9030                 if (reduced_clock->m < factor * reduced_clock->n)
9031                         fp2 |= FP_CB_TUNE;
9032         } else {
9033                 fp2 = fp;
9034         }
9035
9036         dpll = 0;
9037
9038         if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS))
9039                 dpll |= DPLLB_MODE_LVDS;
9040         else
9041                 dpll |= DPLLB_MODE_DAC_SERIAL;
9042
9043         dpll |= (crtc_state->pixel_multiplier - 1)
9044                 << PLL_REF_SDVO_HDMI_MULTIPLIER_SHIFT;
9045
9046         if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_SDVO) ||
9047             intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI))
9048                 dpll |= DPLL_SDVO_HIGH_SPEED;
9049
9050         if (intel_crtc_has_dp_encoder(crtc_state))
9051                 dpll |= DPLL_SDVO_HIGH_SPEED;
9052
9053         /*
9054          * The high speed IO clock is only really required for
9055          * SDVO/HDMI/DP, but we also enable it for CRT to make it
9056          * possible to share the DPLL between CRT and HDMI. Enabling
9057          * the clock needlessly does no real harm, except use up a
9058          * bit of power potentially.
9059          *
9060          * We'll limit this to IVB with 3 pipes, since it has only two
9061          * DPLLs and so DPLL sharing is the only way to get three pipes
9062          * driving PCH ports at the same time. On SNB we could do this,
9063          * and potentially avoid enabling the second DPLL, but it's not
9064          * clear if it''s a win or loss power wise. No point in doing
9065          * this on ILK at all since it has a fixed DPLL<->pipe mapping.
9066          */
9067         if (INTEL_INFO(dev_priv)->num_pipes == 3 &&
9068             intel_crtc_has_type(crtc_state, INTEL_OUTPUT_ANALOG))
9069                 dpll |= DPLL_SDVO_HIGH_SPEED;
9070
9071         /* compute bitmask from p1 value */
9072         dpll |= (1 << (crtc_state->dpll.p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
9073         /* also FPA1 */
9074         dpll |= (1 << (crtc_state->dpll.p1 - 1)) << DPLL_FPA1_P1_POST_DIV_SHIFT;
9075
9076         switch (crtc_state->dpll.p2) {
9077         case 5:
9078                 dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_5;
9079                 break;
9080         case 7:
9081                 dpll |= DPLLB_LVDS_P2_CLOCK_DIV_7;
9082                 break;
9083         case 10:
9084                 dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_10;
9085                 break;
9086         case 14:
9087                 dpll |= DPLLB_LVDS_P2_CLOCK_DIV_14;
9088                 break;
9089         }
9090
9091         if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS) &&
9092             intel_panel_use_ssc(dev_priv))
9093                 dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN;
9094         else
9095                 dpll |= PLL_REF_INPUT_DREFCLK;
9096
9097         dpll |= DPLL_VCO_ENABLE;
9098
9099         crtc_state->dpll_hw_state.dpll = dpll;
9100         crtc_state->dpll_hw_state.fp0 = fp;
9101         crtc_state->dpll_hw_state.fp1 = fp2;
9102 }
9103
9104 static int ironlake_crtc_compute_clock(struct intel_crtc *crtc,
9105                                        struct intel_crtc_state *crtc_state)
9106 {
9107         struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
9108         const struct intel_limit *limit;
9109         int refclk = 120000;
9110
9111         memset(&crtc_state->dpll_hw_state, 0,
9112                sizeof(crtc_state->dpll_hw_state));
9113
9114         /* CPU eDP is the only output that doesn't need a PCH PLL of its own. */
9115         if (!crtc_state->has_pch_encoder)
9116                 return 0;
9117
9118         if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS)) {
9119                 if (intel_panel_use_ssc(dev_priv)) {
9120                         DRM_DEBUG_KMS("using SSC reference clock of %d kHz\n",
9121                                       dev_priv->vbt.lvds_ssc_freq);
9122                         refclk = dev_priv->vbt.lvds_ssc_freq;
9123                 }
9124
9125                 if (intel_is_dual_link_lvds(dev_priv)) {
9126                         if (refclk == 100000)
9127                                 limit = &intel_limits_ironlake_dual_lvds_100m;
9128                         else
9129                                 limit = &intel_limits_ironlake_dual_lvds;
9130                 } else {
9131                         if (refclk == 100000)
9132                                 limit = &intel_limits_ironlake_single_lvds_100m;
9133                         else
9134                                 limit = &intel_limits_ironlake_single_lvds;
9135                 }
9136         } else {
9137                 limit = &intel_limits_ironlake_dac;
9138         }
9139
9140         if (!crtc_state->clock_set &&
9141             !g4x_find_best_dpll(limit, crtc_state, crtc_state->port_clock,
9142                                 refclk, NULL, &crtc_state->dpll)) {
9143                 DRM_ERROR("Couldn't find PLL settings for mode!\n");
9144                 return -EINVAL;
9145         }
9146
9147         ironlake_compute_dpll(crtc, crtc_state, NULL);
9148
9149         if (!intel_get_shared_dpll(crtc_state, NULL)) {
9150                 DRM_DEBUG_KMS("failed to find PLL for pipe %c\n",
9151                               pipe_name(crtc->pipe));
9152                 return -EINVAL;
9153         }
9154
9155         return 0;
9156 }
9157
9158 static void intel_pch_transcoder_get_m_n(struct intel_crtc *crtc,
9159                                          struct intel_link_m_n *m_n)
9160 {
9161         struct drm_device *dev = crtc->base.dev;
9162         struct drm_i915_private *dev_priv = to_i915(dev);
9163         enum pipe pipe = crtc->pipe;
9164
9165         m_n->link_m = I915_READ(PCH_TRANS_LINK_M1(pipe));
9166         m_n->link_n = I915_READ(PCH_TRANS_LINK_N1(pipe));
9167         m_n->gmch_m = I915_READ(PCH_TRANS_DATA_M1(pipe))
9168                 & ~TU_SIZE_MASK;
9169         m_n->gmch_n = I915_READ(PCH_TRANS_DATA_N1(pipe));
9170         m_n->tu = ((I915_READ(PCH_TRANS_DATA_M1(pipe))
9171                     & TU_SIZE_MASK) >> TU_SIZE_SHIFT) + 1;
9172 }
9173
9174 static void intel_cpu_transcoder_get_m_n(struct intel_crtc *crtc,
9175                                          enum transcoder transcoder,
9176                                          struct intel_link_m_n *m_n,
9177                                          struct intel_link_m_n *m2_n2)
9178 {
9179         struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
9180         enum pipe pipe = crtc->pipe;
9181
9182         if (INTEL_GEN(dev_priv) >= 5) {
9183                 m_n->link_m = I915_READ(PIPE_LINK_M1(transcoder));
9184                 m_n->link_n = I915_READ(PIPE_LINK_N1(transcoder));
9185                 m_n->gmch_m = I915_READ(PIPE_DATA_M1(transcoder))
9186                         & ~TU_SIZE_MASK;
9187                 m_n->gmch_n = I915_READ(PIPE_DATA_N1(transcoder));
9188                 m_n->tu = ((I915_READ(PIPE_DATA_M1(transcoder))
9189                             & TU_SIZE_MASK) >> TU_SIZE_SHIFT) + 1;
9190
9191                 if (m2_n2 && transcoder_has_m2_n2(dev_priv, transcoder)) {
9192                         m2_n2->link_m = I915_READ(PIPE_LINK_M2(transcoder));
9193                         m2_n2->link_n = I915_READ(PIPE_LINK_N2(transcoder));
9194                         m2_n2->gmch_m = I915_READ(PIPE_DATA_M2(transcoder))
9195                                         & ~TU_SIZE_MASK;
9196                         m2_n2->gmch_n = I915_READ(PIPE_DATA_N2(transcoder));
9197                         m2_n2->tu = ((I915_READ(PIPE_DATA_M2(transcoder))
9198                                         & TU_SIZE_MASK) >> TU_SIZE_SHIFT) + 1;
9199                 }
9200         } else {
9201                 m_n->link_m = I915_READ(PIPE_LINK_M_G4X(pipe));
9202                 m_n->link_n = I915_READ(PIPE_LINK_N_G4X(pipe));
9203                 m_n->gmch_m = I915_READ(PIPE_DATA_M_G4X(pipe))
9204                         & ~TU_SIZE_MASK;
9205                 m_n->gmch_n = I915_READ(PIPE_DATA_N_G4X(pipe));
9206                 m_n->tu = ((I915_READ(PIPE_DATA_M_G4X(pipe))
9207                             & TU_SIZE_MASK) >> TU_SIZE_SHIFT) + 1;
9208         }
9209 }
9210
9211 void intel_dp_get_m_n(struct intel_crtc *crtc,
9212                       struct intel_crtc_state *pipe_config)
9213 {
9214         if (pipe_config->has_pch_encoder)
9215                 intel_pch_transcoder_get_m_n(crtc, &pipe_config->dp_m_n);
9216         else
9217                 intel_cpu_transcoder_get_m_n(crtc, pipe_config->cpu_transcoder,
9218                                              &pipe_config->dp_m_n,
9219                                              &pipe_config->dp_m2_n2);
9220 }
9221
9222 static void ironlake_get_fdi_m_n_config(struct intel_crtc *crtc,
9223                                         struct intel_crtc_state *pipe_config)
9224 {
9225         intel_cpu_transcoder_get_m_n(crtc, pipe_config->cpu_transcoder,
9226                                      &pipe_config->fdi_m_n, NULL);
9227 }
9228
9229 static void skylake_get_pfit_config(struct intel_crtc *crtc,
9230                                     struct intel_crtc_state *pipe_config)
9231 {
9232         struct drm_device *dev = crtc->base.dev;
9233         struct drm_i915_private *dev_priv = to_i915(dev);
9234         struct intel_crtc_scaler_state *scaler_state = &pipe_config->scaler_state;
9235         u32 ps_ctrl = 0;
9236         int id = -1;
9237         int i;
9238
9239         /* find scaler attached to this pipe */
9240         for (i = 0; i < crtc->num_scalers; i++) {
9241                 ps_ctrl = I915_READ(SKL_PS_CTRL(crtc->pipe, i));
9242                 if (ps_ctrl & PS_SCALER_EN && !(ps_ctrl & PS_PLANE_SEL_MASK)) {
9243                         id = i;
9244                         pipe_config->pch_pfit.enabled = true;
9245                         pipe_config->pch_pfit.pos = I915_READ(SKL_PS_WIN_POS(crtc->pipe, i));
9246                         pipe_config->pch_pfit.size = I915_READ(SKL_PS_WIN_SZ(crtc->pipe, i));
9247                         scaler_state->scalers[i].in_use = true;
9248                         break;
9249                 }
9250         }
9251
9252         scaler_state->scaler_id = id;
9253         if (id >= 0) {
9254                 scaler_state->scaler_users |= (1 << SKL_CRTC_INDEX);
9255         } else {
9256                 scaler_state->scaler_users &= ~(1 << SKL_CRTC_INDEX);
9257         }
9258 }
9259
9260 static void
9261 skylake_get_initial_plane_config(struct intel_crtc *crtc,
9262                                  struct intel_initial_plane_config *plane_config)
9263 {
9264         struct drm_device *dev = crtc->base.dev;
9265         struct drm_i915_private *dev_priv = to_i915(dev);
9266         struct intel_plane *plane = to_intel_plane(crtc->base.primary);
9267         enum plane_id plane_id = plane->id;
9268         enum pipe pipe;
9269         u32 val, base, offset, stride_mult, tiling, alpha;
9270         int fourcc, pixel_format;
9271         unsigned int aligned_height;
9272         struct drm_framebuffer *fb;
9273         struct intel_framebuffer *intel_fb;
9274
9275         if (!plane->get_hw_state(plane, &pipe))
9276                 return;
9277
9278         WARN_ON(pipe != crtc->pipe);
9279
9280         intel_fb = kzalloc(sizeof(*intel_fb), GFP_KERNEL);
9281         if (!intel_fb) {
9282                 DRM_DEBUG_KMS("failed to alloc fb\n");
9283                 return;
9284         }
9285
9286         fb = &intel_fb->base;
9287
9288         fb->dev = dev;
9289
9290         val = I915_READ(PLANE_CTL(pipe, plane_id));
9291
9292         if (INTEL_GEN(dev_priv) >= 11)
9293                 pixel_format = val & ICL_PLANE_CTL_FORMAT_MASK;
9294         else
9295                 pixel_format = val & PLANE_CTL_FORMAT_MASK;
9296
9297         if (INTEL_GEN(dev_priv) >= 10 || IS_GEMINILAKE(dev_priv)) {
9298                 alpha = I915_READ(PLANE_COLOR_CTL(pipe, plane_id));
9299                 alpha &= PLANE_COLOR_ALPHA_MASK;
9300         } else {
9301                 alpha = val & PLANE_CTL_ALPHA_MASK;
9302         }
9303
9304         fourcc = skl_format_to_fourcc(pixel_format,
9305                                       val & PLANE_CTL_ORDER_RGBX, alpha);
9306         fb->format = drm_format_info(fourcc);
9307
9308         tiling = val & PLANE_CTL_TILED_MASK;
9309         switch (tiling) {
9310         case PLANE_CTL_TILED_LINEAR:
9311                 fb->modifier = DRM_FORMAT_MOD_LINEAR;
9312                 break;
9313         case PLANE_CTL_TILED_X:
9314                 plane_config->tiling = I915_TILING_X;
9315                 fb->modifier = I915_FORMAT_MOD_X_TILED;
9316                 break;
9317         case PLANE_CTL_TILED_Y:
9318                 plane_config->tiling = I915_TILING_Y;
9319                 if (val & PLANE_CTL_RENDER_DECOMPRESSION_ENABLE)
9320                         fb->modifier = I915_FORMAT_MOD_Y_TILED_CCS;
9321                 else
9322                         fb->modifier = I915_FORMAT_MOD_Y_TILED;
9323                 break;
9324         case PLANE_CTL_TILED_YF:
9325                 if (val & PLANE_CTL_RENDER_DECOMPRESSION_ENABLE)
9326                         fb->modifier = I915_FORMAT_MOD_Yf_TILED_CCS;
9327                 else
9328                         fb->modifier = I915_FORMAT_MOD_Yf_TILED;
9329                 break;
9330         default:
9331                 MISSING_CASE(tiling);
9332                 goto error;
9333         }
9334
9335         /*
9336          * DRM_MODE_ROTATE_ is counter clockwise to stay compatible with Xrandr
9337          * while i915 HW rotation is clockwise, thats why this swapping.
9338          */
9339         switch (val & PLANE_CTL_ROTATE_MASK) {
9340         case PLANE_CTL_ROTATE_0:
9341                 plane_config->rotation = DRM_MODE_ROTATE_0;
9342                 break;
9343         case PLANE_CTL_ROTATE_90:
9344                 plane_config->rotation = DRM_MODE_ROTATE_270;
9345                 break;
9346         case PLANE_CTL_ROTATE_180:
9347                 plane_config->rotation = DRM_MODE_ROTATE_180;
9348                 break;
9349         case PLANE_CTL_ROTATE_270:
9350                 plane_config->rotation = DRM_MODE_ROTATE_90;
9351                 break;
9352         }
9353
9354         if (INTEL_GEN(dev_priv) >= 10 &&
9355             val & PLANE_CTL_FLIP_HORIZONTAL)
9356                 plane_config->rotation |= DRM_MODE_REFLECT_X;
9357
9358         base = I915_READ(PLANE_SURF(pipe, plane_id)) & 0xfffff000;
9359         plane_config->base = base;
9360
9361         offset = I915_READ(PLANE_OFFSET(pipe, plane_id));
9362
9363         val = I915_READ(PLANE_SIZE(pipe, plane_id));
9364         fb->height = ((val >> 16) & 0xfff) + 1;
9365         fb->width = ((val >> 0) & 0x1fff) + 1;
9366
9367         val = I915_READ(PLANE_STRIDE(pipe, plane_id));
9368         stride_mult = skl_plane_stride_mult(fb, 0, DRM_MODE_ROTATE_0);
9369         fb->pitches[0] = (val & 0x3ff) * stride_mult;
9370
9371         aligned_height = intel_fb_align_height(fb, 0, fb->height);
9372
9373         plane_config->size = fb->pitches[0] * aligned_height;
9374
9375         DRM_DEBUG_KMS("%s/%s with fb: size=%dx%d@%d, offset=%x, pitch %d, size 0x%x\n",
9376                       crtc->base.name, plane->base.name, fb->width, fb->height,
9377                       fb->format->cpp[0] * 8, base, fb->pitches[0],
9378                       plane_config->size);
9379
9380         plane_config->fb = intel_fb;
9381         return;
9382
9383 error:
9384         kfree(intel_fb);
9385 }
9386
9387 static void ironlake_get_pfit_config(struct intel_crtc *crtc,
9388                                      struct intel_crtc_state *pipe_config)
9389 {
9390         struct drm_device *dev = crtc->base.dev;
9391         struct drm_i915_private *dev_priv = to_i915(dev);
9392         u32 tmp;
9393
9394         tmp = I915_READ(PF_CTL(crtc->pipe));
9395
9396         if (tmp & PF_ENABLE) {
9397                 pipe_config->pch_pfit.enabled = true;
9398                 pipe_config->pch_pfit.pos = I915_READ(PF_WIN_POS(crtc->pipe));
9399                 pipe_config->pch_pfit.size = I915_READ(PF_WIN_SZ(crtc->pipe));
9400
9401                 /* We currently do not free assignements of panel fitters on
9402                  * ivb/hsw (since we don't use the higher upscaling modes which
9403                  * differentiates them) so just WARN about this case for now. */
9404                 if (IS_GEN(dev_priv, 7)) {
9405                         WARN_ON((tmp & PF_PIPE_SEL_MASK_IVB) !=
9406                                 PF_PIPE_SEL_IVB(crtc->pipe));
9407                 }
9408         }
9409 }
9410
9411 static bool ironlake_get_pipe_config(struct intel_crtc *crtc,
9412                                      struct intel_crtc_state *pipe_config)
9413 {
9414         struct drm_device *dev = crtc->base.dev;
9415         struct drm_i915_private *dev_priv = to_i915(dev);
9416         enum intel_display_power_domain power_domain;
9417         intel_wakeref_t wakeref;
9418         u32 tmp;
9419         bool ret;
9420
9421         power_domain = POWER_DOMAIN_PIPE(crtc->pipe);
9422         wakeref = intel_display_power_get_if_enabled(dev_priv, power_domain);
9423         if (!wakeref)
9424                 return false;
9425
9426         pipe_config->output_format = INTEL_OUTPUT_FORMAT_RGB;
9427         pipe_config->cpu_transcoder = (enum transcoder) crtc->pipe;
9428         pipe_config->shared_dpll = NULL;
9429
9430         ret = false;
9431         tmp = I915_READ(PIPECONF(crtc->pipe));
9432         if (!(tmp & PIPECONF_ENABLE))
9433                 goto out;
9434
9435         switch (tmp & PIPECONF_BPC_MASK) {
9436         case PIPECONF_6BPC:
9437                 pipe_config->pipe_bpp = 18;
9438                 break;
9439         case PIPECONF_8BPC:
9440                 pipe_config->pipe_bpp = 24;
9441                 break;
9442         case PIPECONF_10BPC:
9443                 pipe_config->pipe_bpp = 30;
9444                 break;
9445         case PIPECONF_12BPC:
9446                 pipe_config->pipe_bpp = 36;
9447                 break;
9448         default:
9449                 break;
9450         }
9451
9452         if (tmp & PIPECONF_COLOR_RANGE_SELECT)
9453                 pipe_config->limited_color_range = true;
9454
9455         pipe_config->gamma_mode = (tmp & PIPECONF_GAMMA_MODE_MASK_ILK) >>
9456                 PIPECONF_GAMMA_MODE_SHIFT;
9457
9458         pipe_config->csc_mode = I915_READ(PIPE_CSC_MODE(crtc->pipe));
9459
9460         i9xx_get_pipe_color_config(pipe_config);
9461
9462         if (I915_READ(PCH_TRANSCONF(crtc->pipe)) & TRANS_ENABLE) {
9463                 struct intel_shared_dpll *pll;
9464                 enum intel_dpll_id pll_id;
9465
9466                 pipe_config->has_pch_encoder = true;
9467
9468                 tmp = I915_READ(FDI_RX_CTL(crtc->pipe));
9469                 pipe_config->fdi_lanes = ((FDI_DP_PORT_WIDTH_MASK & tmp) >>
9470                                           FDI_DP_PORT_WIDTH_SHIFT) + 1;
9471
9472                 ironlake_get_fdi_m_n_config(crtc, pipe_config);
9473
9474                 if (HAS_PCH_IBX(dev_priv)) {
9475                         /*
9476                          * The pipe->pch transcoder and pch transcoder->pll
9477                          * mapping is fixed.
9478                          */
9479                         pll_id = (enum intel_dpll_id) crtc->pipe;
9480                 } else {
9481                         tmp = I915_READ(PCH_DPLL_SEL);
9482                         if (tmp & TRANS_DPLLB_SEL(crtc->pipe))
9483                                 pll_id = DPLL_ID_PCH_PLL_B;
9484                         else
9485                                 pll_id= DPLL_ID_PCH_PLL_A;
9486                 }
9487
9488                 pipe_config->shared_dpll =
9489                         intel_get_shared_dpll_by_id(dev_priv, pll_id);
9490                 pll = pipe_config->shared_dpll;
9491
9492                 WARN_ON(!pll->info->funcs->get_hw_state(dev_priv, pll,
9493                                                 &pipe_config->dpll_hw_state));
9494
9495                 tmp = pipe_config->dpll_hw_state.dpll;
9496                 pipe_config->pixel_multiplier =
9497                         ((tmp & PLL_REF_SDVO_HDMI_MULTIPLIER_MASK)
9498                          >> PLL_REF_SDVO_HDMI_MULTIPLIER_SHIFT) + 1;
9499
9500                 ironlake_pch_clock_get(crtc, pipe_config);
9501         } else {
9502                 pipe_config->pixel_multiplier = 1;
9503         }
9504
9505         intel_get_pipe_timings(crtc, pipe_config);
9506         intel_get_pipe_src_size(crtc, pipe_config);
9507
9508         ironlake_get_pfit_config(crtc, pipe_config);
9509
9510         ret = true;
9511
9512 out:
9513         intel_display_power_put(dev_priv, power_domain, wakeref);
9514
9515         return ret;
9516 }
9517 static int haswell_crtc_compute_clock(struct intel_crtc *crtc,
9518                                       struct intel_crtc_state *crtc_state)
9519 {
9520         struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
9521         struct intel_atomic_state *state =
9522                 to_intel_atomic_state(crtc_state->base.state);
9523
9524         if (!intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DSI) ||
9525             INTEL_GEN(dev_priv) >= 11) {
9526                 struct intel_encoder *encoder =
9527                         intel_get_crtc_new_encoder(state, crtc_state);
9528
9529                 if (!intel_get_shared_dpll(crtc_state, encoder)) {
9530                         DRM_DEBUG_KMS("failed to find PLL for pipe %c\n",
9531                                       pipe_name(crtc->pipe));
9532                         return -EINVAL;
9533                 }
9534         }
9535
9536         return 0;
9537 }
9538
9539 static void cannonlake_get_ddi_pll(struct drm_i915_private *dev_priv,
9540                                    enum port port,
9541                                    struct intel_crtc_state *pipe_config)
9542 {
9543         enum intel_dpll_id id;
9544         u32 temp;
9545
9546         temp = I915_READ(DPCLKA_CFGCR0) & DPCLKA_CFGCR0_DDI_CLK_SEL_MASK(port);
9547         id = temp >> DPCLKA_CFGCR0_DDI_CLK_SEL_SHIFT(port);
9548
9549         if (WARN_ON(id < SKL_DPLL0 || id > SKL_DPLL2))
9550                 return;
9551
9552         pipe_config->shared_dpll = intel_get_shared_dpll_by_id(dev_priv, id);
9553 }
9554
9555 static void icelake_get_ddi_pll(struct drm_i915_private *dev_priv,
9556                                 enum port port,
9557                                 struct intel_crtc_state *pipe_config)
9558 {
9559         enum intel_dpll_id id;
9560         u32 temp;
9561
9562         /* TODO: TBT pll not implemented. */
9563         if (intel_port_is_combophy(dev_priv, port)) {
9564                 temp = I915_READ(DPCLKA_CFGCR0_ICL) &
9565                        DPCLKA_CFGCR0_DDI_CLK_SEL_MASK(port);
9566                 id = temp >> DPCLKA_CFGCR0_DDI_CLK_SEL_SHIFT(port);
9567         } else if (intel_port_is_tc(dev_priv, port)) {
9568                 id = icl_tc_port_to_pll_id(intel_port_to_tc(dev_priv, port));
9569         } else {
9570                 WARN(1, "Invalid port %x\n", port);
9571                 return;
9572         }
9573
9574         pipe_config->shared_dpll = intel_get_shared_dpll_by_id(dev_priv, id);
9575 }
9576
9577 static void bxt_get_ddi_pll(struct drm_i915_private *dev_priv,
9578                                 enum port port,
9579                                 struct intel_crtc_state *pipe_config)
9580 {
9581         enum intel_dpll_id id;
9582
9583         switch (port) {
9584         case PORT_A:
9585                 id = DPLL_ID_SKL_DPLL0;
9586                 break;
9587         case PORT_B:
9588                 id = DPLL_ID_SKL_DPLL1;
9589                 break;
9590         case PORT_C:
9591                 id = DPLL_ID_SKL_DPLL2;
9592                 break;
9593         default:
9594                 DRM_ERROR("Incorrect port type\n");
9595                 return;
9596         }
9597
9598         pipe_config->shared_dpll = intel_get_shared_dpll_by_id(dev_priv, id);
9599 }
9600
9601 static void skylake_get_ddi_pll(struct drm_i915_private *dev_priv,
9602                                 enum port port,
9603                                 struct intel_crtc_state *pipe_config)
9604 {
9605         enum intel_dpll_id id;
9606         u32 temp;
9607
9608         temp = I915_READ(DPLL_CTRL2) & DPLL_CTRL2_DDI_CLK_SEL_MASK(port);
9609         id = temp >> (port * 3 + 1);
9610
9611         if (WARN_ON(id < SKL_DPLL0 || id > SKL_DPLL3))
9612                 return;
9613
9614         pipe_config->shared_dpll = intel_get_shared_dpll_by_id(dev_priv, id);
9615 }
9616
9617 static void haswell_get_ddi_pll(struct drm_i915_private *dev_priv,
9618                                 enum port port,
9619                                 struct intel_crtc_state *pipe_config)
9620 {
9621         enum intel_dpll_id id;
9622         u32 ddi_pll_sel = I915_READ(PORT_CLK_SEL(port));
9623
9624         switch (ddi_pll_sel) {
9625         case PORT_CLK_SEL_WRPLL1:
9626                 id = DPLL_ID_WRPLL1;
9627                 break;
9628         case PORT_CLK_SEL_WRPLL2:
9629                 id = DPLL_ID_WRPLL2;
9630                 break;
9631         case PORT_CLK_SEL_SPLL:
9632                 id = DPLL_ID_SPLL;
9633                 break;
9634         case PORT_CLK_SEL_LCPLL_810:
9635                 id = DPLL_ID_LCPLL_810;
9636                 break;
9637         case PORT_CLK_SEL_LCPLL_1350:
9638                 id = DPLL_ID_LCPLL_1350;
9639                 break;
9640         case PORT_CLK_SEL_LCPLL_2700:
9641                 id = DPLL_ID_LCPLL_2700;
9642                 break;
9643         default:
9644                 MISSING_CASE(ddi_pll_sel);
9645                 /* fall through */
9646         case PORT_CLK_SEL_NONE:
9647                 return;
9648         }
9649
9650         pipe_config->shared_dpll = intel_get_shared_dpll_by_id(dev_priv, id);
9651 }
9652
9653 static bool hsw_get_transcoder_state(struct intel_crtc *crtc,
9654                                      struct intel_crtc_state *pipe_config,
9655                                      u64 *power_domain_mask,
9656                                      intel_wakeref_t *wakerefs)
9657 {
9658         struct drm_device *dev = crtc->base.dev;
9659         struct drm_i915_private *dev_priv = to_i915(dev);
9660         enum intel_display_power_domain power_domain;
9661         unsigned long panel_transcoder_mask = 0;
9662         unsigned long enabled_panel_transcoders = 0;
9663         enum transcoder panel_transcoder;
9664         intel_wakeref_t wf;
9665         u32 tmp;
9666
9667         if (INTEL_GEN(dev_priv) >= 11)
9668                 panel_transcoder_mask |=
9669                         BIT(TRANSCODER_DSI_0) | BIT(TRANSCODER_DSI_1);
9670
9671         if (HAS_TRANSCODER_EDP(dev_priv))
9672                 panel_transcoder_mask |= BIT(TRANSCODER_EDP);
9673
9674         /*
9675          * The pipe->transcoder mapping is fixed with the exception of the eDP
9676          * and DSI transcoders handled below.
9677          */
9678         pipe_config->cpu_transcoder = (enum transcoder) crtc->pipe;
9679
9680         /*
9681          * XXX: Do intel_display_power_get_if_enabled before reading this (for
9682          * consistency and less surprising code; it's in always on power).
9683          */
9684         for_each_set_bit(panel_transcoder,
9685                          &panel_transcoder_mask,
9686                          ARRAY_SIZE(INTEL_INFO(dev_priv)->trans_offsets)) {
9687                 bool force_thru = false;
9688                 enum pipe trans_pipe;
9689
9690                 tmp = I915_READ(TRANS_DDI_FUNC_CTL(panel_transcoder));
9691                 if (!(tmp & TRANS_DDI_FUNC_ENABLE))
9692                         continue;
9693
9694                 /*
9695                  * Log all enabled ones, only use the first one.
9696                  *
9697                  * FIXME: This won't work for two separate DSI displays.
9698                  */
9699                 enabled_panel_transcoders |= BIT(panel_transcoder);
9700                 if (enabled_panel_transcoders != BIT(panel_transcoder))
9701                         continue;
9702
9703                 switch (tmp & TRANS_DDI_EDP_INPUT_MASK) {
9704                 default:
9705                         WARN(1, "unknown pipe linked to transcoder %s\n",
9706                              transcoder_name(panel_transcoder));
9707                         /* fall through */
9708                 case TRANS_DDI_EDP_INPUT_A_ONOFF:
9709                         force_thru = true;
9710                         /* fall through */
9711                 case TRANS_DDI_EDP_INPUT_A_ON:
9712                         trans_pipe = PIPE_A;
9713                         break;
9714                 case TRANS_DDI_EDP_INPUT_B_ONOFF:
9715                         trans_pipe = PIPE_B;
9716                         break;
9717                 case TRANS_DDI_EDP_INPUT_C_ONOFF:
9718                         trans_pipe = PIPE_C;
9719                         break;
9720                 }
9721
9722                 if (trans_pipe == crtc->pipe) {
9723                         pipe_config->cpu_transcoder = panel_transcoder;
9724                         pipe_config->pch_pfit.force_thru = force_thru;
9725                 }
9726         }
9727
9728         /*
9729          * Valid combos: none, eDP, DSI0, DSI1, DSI0+DSI1
9730          */
9731         WARN_ON((enabled_panel_transcoders & BIT(TRANSCODER_EDP)) &&
9732                 enabled_panel_transcoders != BIT(TRANSCODER_EDP));
9733
9734         power_domain = POWER_DOMAIN_TRANSCODER(pipe_config->cpu_transcoder);
9735         WARN_ON(*power_domain_mask & BIT_ULL(power_domain));
9736
9737         wf = intel_display_power_get_if_enabled(dev_priv, power_domain);
9738         if (!wf)
9739                 return false;
9740
9741         wakerefs[power_domain] = wf;
9742         *power_domain_mask |= BIT_ULL(power_domain);
9743
9744         tmp = I915_READ(PIPECONF(pipe_config->cpu_transcoder));
9745
9746         return tmp & PIPECONF_ENABLE;
9747 }
9748
9749 static bool bxt_get_dsi_transcoder_state(struct intel_crtc *crtc,
9750                                          struct intel_crtc_state *pipe_config,
9751                                          u64 *power_domain_mask,
9752                                          intel_wakeref_t *wakerefs)
9753 {
9754         struct drm_device *dev = crtc->base.dev;
9755         struct drm_i915_private *dev_priv = to_i915(dev);
9756         enum intel_display_power_domain power_domain;
9757         enum transcoder cpu_transcoder;
9758         intel_wakeref_t wf;
9759         enum port port;
9760         u32 tmp;
9761
9762         for_each_port_masked(port, BIT(PORT_A) | BIT(PORT_C)) {
9763                 if (port == PORT_A)
9764                         cpu_transcoder = TRANSCODER_DSI_A;
9765                 else
9766                         cpu_transcoder = TRANSCODER_DSI_C;
9767
9768                 power_domain = POWER_DOMAIN_TRANSCODER(cpu_transcoder);
9769                 WARN_ON(*power_domain_mask & BIT_ULL(power_domain));
9770
9771                 wf = intel_display_power_get_if_enabled(dev_priv, power_domain);
9772                 if (!wf)
9773                         continue;
9774
9775                 wakerefs[power_domain] = wf;
9776                 *power_domain_mask |= BIT_ULL(power_domain);
9777
9778                 /*
9779                  * The PLL needs to be enabled with a valid divider
9780                  * configuration, otherwise accessing DSI registers will hang
9781                  * the machine. See BSpec North Display Engine
9782                  * registers/MIPI[BXT]. We can break out here early, since we
9783                  * need the same DSI PLL to be enabled for both DSI ports.
9784                  */
9785                 if (!bxt_dsi_pll_is_enabled(dev_priv))
9786                         break;
9787
9788                 /* XXX: this works for video mode only */
9789                 tmp = I915_READ(BXT_MIPI_PORT_CTRL(port));
9790                 if (!(tmp & DPI_ENABLE))
9791                         continue;
9792
9793                 tmp = I915_READ(MIPI_CTRL(port));
9794                 if ((tmp & BXT_PIPE_SELECT_MASK) != BXT_PIPE_SELECT(crtc->pipe))
9795                         continue;
9796
9797                 pipe_config->cpu_transcoder = cpu_transcoder;
9798                 break;
9799         }
9800
9801         return transcoder_is_dsi(pipe_config->cpu_transcoder);
9802 }
9803
9804 static void haswell_get_ddi_port_state(struct intel_crtc *crtc,
9805                                        struct intel_crtc_state *pipe_config)
9806 {
9807         struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
9808         struct intel_shared_dpll *pll;
9809         enum port port;
9810         u32 tmp;
9811
9812         tmp = I915_READ(TRANS_DDI_FUNC_CTL(pipe_config->cpu_transcoder));
9813
9814         port = (tmp & TRANS_DDI_PORT_MASK) >> TRANS_DDI_PORT_SHIFT;
9815
9816         if (INTEL_GEN(dev_priv) >= 11)
9817                 icelake_get_ddi_pll(dev_priv, port, pipe_config);
9818         else if (IS_CANNONLAKE(dev_priv))
9819                 cannonlake_get_ddi_pll(dev_priv, port, pipe_config);
9820         else if (IS_GEN9_BC(dev_priv))
9821                 skylake_get_ddi_pll(dev_priv, port, pipe_config);
9822         else if (IS_GEN9_LP(dev_priv))
9823                 bxt_get_ddi_pll(dev_priv, port, pipe_config);
9824         else
9825                 haswell_get_ddi_pll(dev_priv, port, pipe_config);
9826
9827         pll = pipe_config->shared_dpll;
9828         if (pll) {
9829                 WARN_ON(!pll->info->funcs->get_hw_state(dev_priv, pll,
9830                                                 &pipe_config->dpll_hw_state));
9831         }
9832
9833         /*
9834          * Haswell has only FDI/PCH transcoder A. It is which is connected to
9835          * DDI E. So just check whether this pipe is wired to DDI E and whether
9836          * the PCH transcoder is on.
9837          */
9838         if (INTEL_GEN(dev_priv) < 9 &&
9839             (port == PORT_E) && I915_READ(LPT_TRANSCONF) & TRANS_ENABLE) {
9840                 pipe_config->has_pch_encoder = true;
9841
9842                 tmp = I915_READ(FDI_RX_CTL(PIPE_A));
9843                 pipe_config->fdi_lanes = ((FDI_DP_PORT_WIDTH_MASK & tmp) >>
9844                                           FDI_DP_PORT_WIDTH_SHIFT) + 1;
9845
9846                 ironlake_get_fdi_m_n_config(crtc, pipe_config);
9847         }
9848 }
9849
9850 static bool haswell_get_pipe_config(struct intel_crtc *crtc,
9851                                     struct intel_crtc_state *pipe_config)
9852 {
9853         struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
9854         intel_wakeref_t wakerefs[POWER_DOMAIN_NUM], wf;
9855         enum intel_display_power_domain power_domain;
9856         u64 power_domain_mask;
9857         bool active;
9858
9859         intel_crtc_init_scalers(crtc, pipe_config);
9860
9861         power_domain = POWER_DOMAIN_PIPE(crtc->pipe);
9862         wf = intel_display_power_get_if_enabled(dev_priv, power_domain);
9863         if (!wf)
9864                 return false;
9865
9866         wakerefs[power_domain] = wf;
9867         power_domain_mask = BIT_ULL(power_domain);
9868
9869         pipe_config->shared_dpll = NULL;
9870
9871         active = hsw_get_transcoder_state(crtc, pipe_config,
9872                                           &power_domain_mask, wakerefs);
9873
9874         if (IS_GEN9_LP(dev_priv) &&
9875             bxt_get_dsi_transcoder_state(crtc, pipe_config,
9876                                          &power_domain_mask, wakerefs)) {
9877                 WARN_ON(active);
9878                 active = true;
9879         }
9880
9881         if (!active)
9882                 goto out;
9883
9884         if (!transcoder_is_dsi(pipe_config->cpu_transcoder) ||
9885             INTEL_GEN(dev_priv) >= 11) {
9886                 haswell_get_ddi_port_state(crtc, pipe_config);
9887                 intel_get_pipe_timings(crtc, pipe_config);
9888         }
9889
9890         intel_get_pipe_src_size(crtc, pipe_config);
9891         intel_get_crtc_ycbcr_config(crtc, pipe_config);
9892
9893         pipe_config->gamma_mode = I915_READ(GAMMA_MODE(crtc->pipe));
9894
9895         pipe_config->csc_mode = I915_READ(PIPE_CSC_MODE(crtc->pipe));
9896
9897         if (INTEL_GEN(dev_priv) >= 9) {
9898                 u32 tmp = I915_READ(SKL_BOTTOM_COLOR(crtc->pipe));
9899
9900                 if (tmp & SKL_BOTTOM_COLOR_GAMMA_ENABLE)
9901                         pipe_config->gamma_enable = true;
9902
9903                 if (tmp & SKL_BOTTOM_COLOR_CSC_ENABLE)
9904                         pipe_config->csc_enable = true;
9905         } else {
9906                 i9xx_get_pipe_color_config(pipe_config);
9907         }
9908
9909         power_domain = POWER_DOMAIN_PIPE_PANEL_FITTER(crtc->pipe);
9910         WARN_ON(power_domain_mask & BIT_ULL(power_domain));
9911
9912         wf = intel_display_power_get_if_enabled(dev_priv, power_domain);
9913         if (wf) {
9914                 wakerefs[power_domain] = wf;
9915                 power_domain_mask |= BIT_ULL(power_domain);
9916
9917                 if (INTEL_GEN(dev_priv) >= 9)
9918                         skylake_get_pfit_config(crtc, pipe_config);
9919                 else
9920                         ironlake_get_pfit_config(crtc, pipe_config);
9921         }
9922
9923         if (hsw_crtc_supports_ips(crtc)) {
9924                 if (IS_HASWELL(dev_priv))
9925                         pipe_config->ips_enabled = I915_READ(IPS_CTL) & IPS_ENABLE;
9926                 else {
9927                         /*
9928                          * We cannot readout IPS state on broadwell, set to
9929                          * true so we can set it to a defined state on first
9930                          * commit.
9931                          */
9932                         pipe_config->ips_enabled = true;
9933                 }
9934         }
9935
9936         if (pipe_config->cpu_transcoder != TRANSCODER_EDP &&
9937             !transcoder_is_dsi(pipe_config->cpu_transcoder)) {
9938                 pipe_config->pixel_multiplier =
9939                         I915_READ(PIPE_MULT(pipe_config->cpu_transcoder)) + 1;
9940         } else {
9941                 pipe_config->pixel_multiplier = 1;
9942         }
9943
9944 out:
9945         for_each_power_domain(power_domain, power_domain_mask)
9946                 intel_display_power_put(dev_priv,
9947                                         power_domain, wakerefs[power_domain]);
9948
9949         return active;
9950 }
9951
9952 static u32 intel_cursor_base(const struct intel_plane_state *plane_state)
9953 {
9954         struct drm_i915_private *dev_priv =
9955                 to_i915(plane_state->base.plane->dev);
9956         const struct drm_framebuffer *fb = plane_state->base.fb;
9957         const struct drm_i915_gem_object *obj = intel_fb_obj(fb);
9958         u32 base;
9959
9960         if (INTEL_INFO(dev_priv)->display.cursor_needs_physical)
9961                 base = obj->phys_handle->busaddr;
9962         else
9963                 base = intel_plane_ggtt_offset(plane_state);
9964
9965         base += plane_state->color_plane[0].offset;
9966
9967         /* ILK+ do this automagically */
9968         if (HAS_GMCH(dev_priv) &&
9969             plane_state->base.rotation & DRM_MODE_ROTATE_180)
9970                 base += (plane_state->base.crtc_h *
9971                          plane_state->base.crtc_w - 1) * fb->format->cpp[0];
9972
9973         return base;
9974 }
9975
9976 static u32 intel_cursor_position(const struct intel_plane_state *plane_state)
9977 {
9978         int x = plane_state->base.crtc_x;
9979         int y = plane_state->base.crtc_y;
9980         u32 pos = 0;
9981
9982         if (x < 0) {
9983                 pos |= CURSOR_POS_SIGN << CURSOR_X_SHIFT;
9984                 x = -x;
9985         }
9986         pos |= x << CURSOR_X_SHIFT;
9987
9988         if (y < 0) {
9989                 pos |= CURSOR_POS_SIGN << CURSOR_Y_SHIFT;
9990                 y = -y;
9991         }
9992         pos |= y << CURSOR_Y_SHIFT;
9993
9994         return pos;
9995 }
9996
9997 static bool intel_cursor_size_ok(const struct intel_plane_state *plane_state)
9998 {
9999         const struct drm_mode_config *config =
10000                 &plane_state->base.plane->dev->mode_config;
10001         int width = plane_state->base.crtc_w;
10002         int height = plane_state->base.crtc_h;
10003
10004         return width > 0 && width <= config->cursor_width &&
10005                 height > 0 && height <= config->cursor_height;
10006 }
10007
10008 static int intel_cursor_check_surface(struct intel_plane_state *plane_state)
10009 {
10010         const struct drm_framebuffer *fb = plane_state->base.fb;
10011         unsigned int rotation = plane_state->base.rotation;
10012         int src_x, src_y;
10013         u32 offset;
10014         int ret;
10015
10016         intel_fill_fb_ggtt_view(&plane_state->view, fb, rotation);
10017         plane_state->color_plane[0].stride = intel_fb_pitch(fb, 0, rotation);
10018
10019         ret = intel_plane_check_stride(plane_state);
10020         if (ret)
10021                 return ret;
10022
10023         src_x = plane_state->base.src_x >> 16;
10024         src_y = plane_state->base.src_y >> 16;
10025
10026         intel_add_fb_offsets(&src_x, &src_y, plane_state, 0);
10027         offset = intel_plane_compute_aligned_offset(&src_x, &src_y,
10028                                                     plane_state, 0);
10029
10030         if (src_x != 0 || src_y != 0) {
10031                 DRM_DEBUG_KMS("Arbitrary cursor panning not supported\n");
10032                 return -EINVAL;
10033         }
10034
10035         plane_state->color_plane[0].offset = offset;
10036
10037         return 0;
10038 }
10039
10040 static int intel_check_cursor(struct intel_crtc_state *crtc_state,
10041                               struct intel_plane_state *plane_state)
10042 {
10043         const struct drm_framebuffer *fb = plane_state->base.fb;
10044         int ret;
10045
10046         if (fb && fb->modifier != DRM_FORMAT_MOD_LINEAR) {
10047                 DRM_DEBUG_KMS("cursor cannot be tiled\n");
10048                 return -EINVAL;
10049         }
10050
10051         ret = drm_atomic_helper_check_plane_state(&plane_state->base,
10052                                                   &crtc_state->base,
10053                                                   DRM_PLANE_HELPER_NO_SCALING,
10054                                                   DRM_PLANE_HELPER_NO_SCALING,
10055                                                   true, true);
10056         if (ret)
10057                 return ret;
10058
10059         if (!plane_state->base.visible)
10060                 return 0;
10061
10062         ret = intel_plane_check_src_coordinates(plane_state);
10063         if (ret)
10064                 return ret;
10065
10066         ret = intel_cursor_check_surface(plane_state);
10067         if (ret)
10068                 return ret;
10069
10070         return 0;
10071 }
10072
10073 static unsigned int
10074 i845_cursor_max_stride(struct intel_plane *plane,
10075                        u32 pixel_format, u64 modifier,
10076                        unsigned int rotation)
10077 {
10078         return 2048;
10079 }
10080
10081 static u32 i845_cursor_ctl_crtc(const struct intel_crtc_state *crtc_state)
10082 {
10083         u32 cntl = 0;
10084
10085         if (crtc_state->gamma_enable)
10086                 cntl |= CURSOR_GAMMA_ENABLE;
10087
10088         return cntl;
10089 }
10090
10091 static u32 i845_cursor_ctl(const struct intel_crtc_state *crtc_state,
10092                            const struct intel_plane_state *plane_state)
10093 {
10094         return CURSOR_ENABLE |
10095                 CURSOR_FORMAT_ARGB |
10096                 CURSOR_STRIDE(plane_state->color_plane[0].stride);
10097 }
10098
10099 static bool i845_cursor_size_ok(const struct intel_plane_state *plane_state)
10100 {
10101         int width = plane_state->base.crtc_w;
10102
10103         /*
10104          * 845g/865g are only limited by the width of their cursors,
10105          * the height is arbitrary up to the precision of the register.
10106          */
10107         return intel_cursor_size_ok(plane_state) && IS_ALIGNED(width, 64);
10108 }
10109
10110 static int i845_check_cursor(struct intel_crtc_state *crtc_state,
10111                              struct intel_plane_state *plane_state)
10112 {
10113         const struct drm_framebuffer *fb = plane_state->base.fb;
10114         int ret;
10115
10116         ret = intel_check_cursor(crtc_state, plane_state);
10117         if (ret)
10118                 return ret;
10119
10120         /* if we want to turn off the cursor ignore width and height */
10121         if (!fb)
10122                 return 0;
10123
10124         /* Check for which cursor types we support */
10125         if (!i845_cursor_size_ok(plane_state)) {
10126                 DRM_DEBUG("Cursor dimension %dx%d not supported\n",
10127                           plane_state->base.crtc_w,
10128                           plane_state->base.crtc_h);
10129                 return -EINVAL;
10130         }
10131
10132         WARN_ON(plane_state->base.visible &&
10133                 plane_state->color_plane[0].stride != fb->pitches[0]);
10134
10135         switch (fb->pitches[0]) {
10136         case 256:
10137         case 512:
10138         case 1024:
10139         case 2048:
10140                 break;
10141         default:
10142                 DRM_DEBUG_KMS("Invalid cursor stride (%u)\n",
10143                               fb->pitches[0]);
10144                 return -EINVAL;
10145         }
10146
10147         plane_state->ctl = i845_cursor_ctl(crtc_state, plane_state);
10148
10149         return 0;
10150 }
10151
10152 static void i845_update_cursor(struct intel_plane *plane,
10153                                const struct intel_crtc_state *crtc_state,
10154                                const struct intel_plane_state *plane_state)
10155 {
10156         struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
10157         u32 cntl = 0, base = 0, pos = 0, size = 0;
10158         unsigned long irqflags;
10159
10160         if (plane_state && plane_state->base.visible) {
10161                 unsigned int width = plane_state->base.crtc_w;
10162                 unsigned int height = plane_state->base.crtc_h;
10163
10164                 cntl = plane_state->ctl |
10165                         i845_cursor_ctl_crtc(crtc_state);
10166
10167                 size = (height << 12) | width;
10168
10169                 base = intel_cursor_base(plane_state);
10170                 pos = intel_cursor_position(plane_state);
10171         }
10172
10173         spin_lock_irqsave(&dev_priv->uncore.lock, irqflags);
10174
10175         /* On these chipsets we can only modify the base/size/stride
10176          * whilst the cursor is disabled.
10177          */
10178         if (plane->cursor.base != base ||
10179             plane->cursor.size != size ||
10180             plane->cursor.cntl != cntl) {
10181                 I915_WRITE_FW(CURCNTR(PIPE_A), 0);
10182                 I915_WRITE_FW(CURBASE(PIPE_A), base);
10183                 I915_WRITE_FW(CURSIZE, size);
10184                 I915_WRITE_FW(CURPOS(PIPE_A), pos);
10185                 I915_WRITE_FW(CURCNTR(PIPE_A), cntl);
10186
10187                 plane->cursor.base = base;
10188                 plane->cursor.size = size;
10189                 plane->cursor.cntl = cntl;
10190         } else {
10191                 I915_WRITE_FW(CURPOS(PIPE_A), pos);
10192         }
10193
10194         spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags);
10195 }
10196
10197 static void i845_disable_cursor(struct intel_plane *plane,
10198                                 const struct intel_crtc_state *crtc_state)
10199 {
10200         i845_update_cursor(plane, crtc_state, NULL);
10201 }
10202
10203 static bool i845_cursor_get_hw_state(struct intel_plane *plane,
10204                                      enum pipe *pipe)
10205 {
10206         struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
10207         enum intel_display_power_domain power_domain;
10208         intel_wakeref_t wakeref;
10209         bool ret;
10210
10211         power_domain = POWER_DOMAIN_PIPE(PIPE_A);
10212         wakeref = intel_display_power_get_if_enabled(dev_priv, power_domain);
10213         if (!wakeref)
10214                 return false;
10215
10216         ret = I915_READ(CURCNTR(PIPE_A)) & CURSOR_ENABLE;
10217
10218         *pipe = PIPE_A;
10219
10220         intel_display_power_put(dev_priv, power_domain, wakeref);
10221
10222         return ret;
10223 }
10224
10225 static unsigned int
10226 i9xx_cursor_max_stride(struct intel_plane *plane,
10227                        u32 pixel_format, u64 modifier,
10228                        unsigned int rotation)
10229 {
10230         return plane->base.dev->mode_config.cursor_width * 4;
10231 }
10232
10233 static u32 i9xx_cursor_ctl_crtc(const struct intel_crtc_state *crtc_state)
10234 {
10235         struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
10236         struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
10237         u32 cntl = 0;
10238
10239         if (INTEL_GEN(dev_priv) >= 11)
10240                 return cntl;
10241
10242         if (crtc_state->gamma_enable)
10243                 cntl = MCURSOR_GAMMA_ENABLE;
10244
10245         if (crtc_state->csc_enable)
10246                 cntl |= MCURSOR_PIPE_CSC_ENABLE;
10247
10248         if (INTEL_GEN(dev_priv) < 5 && !IS_G4X(dev_priv))
10249                 cntl |= MCURSOR_PIPE_SELECT(crtc->pipe);
10250
10251         return cntl;
10252 }
10253
10254 static u32 i9xx_cursor_ctl(const struct intel_crtc_state *crtc_state,
10255                            const struct intel_plane_state *plane_state)
10256 {
10257         struct drm_i915_private *dev_priv =
10258                 to_i915(plane_state->base.plane->dev);
10259         u32 cntl = 0;
10260
10261         if (IS_GEN(dev_priv, 6) || IS_IVYBRIDGE(dev_priv))
10262                 cntl |= MCURSOR_TRICKLE_FEED_DISABLE;
10263
10264         switch (plane_state->base.crtc_w) {
10265         case 64:
10266                 cntl |= MCURSOR_MODE_64_ARGB_AX;
10267                 break;
10268         case 128:
10269                 cntl |= MCURSOR_MODE_128_ARGB_AX;
10270                 break;
10271         case 256:
10272                 cntl |= MCURSOR_MODE_256_ARGB_AX;
10273                 break;
10274         default:
10275                 MISSING_CASE(plane_state->base.crtc_w);
10276                 return 0;
10277         }
10278
10279         if (plane_state->base.rotation & DRM_MODE_ROTATE_180)
10280                 cntl |= MCURSOR_ROTATE_180;
10281
10282         return cntl;
10283 }
10284
10285 static bool i9xx_cursor_size_ok(const struct intel_plane_state *plane_state)
10286 {
10287         struct drm_i915_private *dev_priv =
10288                 to_i915(plane_state->base.plane->dev);
10289         int width = plane_state->base.crtc_w;
10290         int height = plane_state->base.crtc_h;
10291
10292         if (!intel_cursor_size_ok(plane_state))
10293                 return false;
10294
10295         /* Cursor width is limited to a few power-of-two sizes */
10296         switch (width) {
10297         case 256:
10298         case 128:
10299         case 64:
10300                 break;
10301         default:
10302                 return false;
10303         }
10304
10305         /*
10306          * IVB+ have CUR_FBC_CTL which allows an arbitrary cursor
10307          * height from 8 lines up to the cursor width, when the
10308          * cursor is not rotated. Everything else requires square
10309          * cursors.
10310          */
10311         if (HAS_CUR_FBC(dev_priv) &&
10312             plane_state->base.rotation & DRM_MODE_ROTATE_0) {
10313                 if (height < 8 || height > width)
10314                         return false;
10315         } else {
10316                 if (height != width)
10317                         return false;
10318         }
10319
10320         return true;
10321 }
10322
10323 static int i9xx_check_cursor(struct intel_crtc_state *crtc_state,
10324                              struct intel_plane_state *plane_state)
10325 {
10326         struct intel_plane *plane = to_intel_plane(plane_state->base.plane);
10327         struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
10328         const struct drm_framebuffer *fb = plane_state->base.fb;
10329         enum pipe pipe = plane->pipe;
10330         int ret;
10331
10332         ret = intel_check_cursor(crtc_state, plane_state);
10333         if (ret)
10334                 return ret;
10335
10336         /* if we want to turn off the cursor ignore width and height */
10337         if (!fb)
10338                 return 0;
10339
10340         /* Check for which cursor types we support */
10341         if (!i9xx_cursor_size_ok(plane_state)) {
10342                 DRM_DEBUG("Cursor dimension %dx%d not supported\n",
10343                           plane_state->base.crtc_w,
10344                           plane_state->base.crtc_h);
10345                 return -EINVAL;
10346         }
10347
10348         WARN_ON(plane_state->base.visible &&
10349                 plane_state->color_plane[0].stride != fb->pitches[0]);
10350
10351         if (fb->pitches[0] != plane_state->base.crtc_w * fb->format->cpp[0]) {
10352                 DRM_DEBUG_KMS("Invalid cursor stride (%u) (cursor width %d)\n",
10353                               fb->pitches[0], plane_state->base.crtc_w);
10354                 return -EINVAL;
10355         }
10356
10357         /*
10358          * There's something wrong with the cursor on CHV pipe C.
10359          * If it straddles the left edge of the screen then
10360          * moving it away from the edge or disabling it often
10361          * results in a pipe underrun, and often that can lead to
10362          * dead pipe (constant underrun reported, and it scans
10363          * out just a solid color). To recover from that, the
10364          * display power well must be turned off and on again.
10365          * Refuse the put the cursor into that compromised position.
10366          */
10367         if (IS_CHERRYVIEW(dev_priv) && pipe == PIPE_C &&
10368             plane_state->base.visible && plane_state->base.crtc_x < 0) {
10369                 DRM_DEBUG_KMS("CHV cursor C not allowed to straddle the left screen edge\n");
10370                 return -EINVAL;
10371         }
10372
10373         plane_state->ctl = i9xx_cursor_ctl(crtc_state, plane_state);
10374
10375         return 0;
10376 }
10377
10378 static void i9xx_update_cursor(struct intel_plane *plane,
10379                                const struct intel_crtc_state *crtc_state,
10380                                const struct intel_plane_state *plane_state)
10381 {
10382         struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
10383         enum pipe pipe = plane->pipe;
10384         u32 cntl = 0, base = 0, pos = 0, fbc_ctl = 0;
10385         unsigned long irqflags;
10386
10387         if (plane_state && plane_state->base.visible) {
10388                 cntl = plane_state->ctl |
10389                         i9xx_cursor_ctl_crtc(crtc_state);
10390
10391                 if (plane_state->base.crtc_h != plane_state->base.crtc_w)
10392                         fbc_ctl = CUR_FBC_CTL_EN | (plane_state->base.crtc_h - 1);
10393
10394                 base = intel_cursor_base(plane_state);
10395                 pos = intel_cursor_position(plane_state);
10396         }
10397
10398         spin_lock_irqsave(&dev_priv->uncore.lock, irqflags);
10399
10400         /*
10401          * On some platforms writing CURCNTR first will also
10402          * cause CURPOS to be armed by the CURBASE write.
10403          * Without the CURCNTR write the CURPOS write would
10404          * arm itself. Thus we always update CURCNTR before
10405          * CURPOS.
10406          *
10407          * On other platforms CURPOS always requires the
10408          * CURBASE write to arm the update. Additonally
10409          * a write to any of the cursor register will cancel
10410          * an already armed cursor update. Thus leaving out
10411          * the CURBASE write after CURPOS could lead to a
10412          * cursor that doesn't appear to move, or even change
10413          * shape. Thus we always write CURBASE.
10414          *
10415          * The other registers are armed by by the CURBASE write
10416          * except when the plane is getting enabled at which time
10417          * the CURCNTR write arms the update.
10418          */
10419
10420         if (INTEL_GEN(dev_priv) >= 9)
10421                 skl_write_cursor_wm(plane, crtc_state);
10422
10423         if (plane->cursor.base != base ||
10424             plane->cursor.size != fbc_ctl ||
10425             plane->cursor.cntl != cntl) {
10426                 if (HAS_CUR_FBC(dev_priv))
10427                         I915_WRITE_FW(CUR_FBC_CTL(pipe), fbc_ctl);
10428                 I915_WRITE_FW(CURCNTR(pipe), cntl);
10429                 I915_WRITE_FW(CURPOS(pipe), pos);
10430                 I915_WRITE_FW(CURBASE(pipe), base);
10431
10432                 plane->cursor.base = base;
10433                 plane->cursor.size = fbc_ctl;
10434                 plane->cursor.cntl = cntl;
10435         } else {
10436                 I915_WRITE_FW(CURPOS(pipe), pos);
10437                 I915_WRITE_FW(CURBASE(pipe), base);
10438         }
10439
10440         spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags);
10441 }
10442
10443 static void i9xx_disable_cursor(struct intel_plane *plane,
10444                                 const struct intel_crtc_state *crtc_state)
10445 {
10446         i9xx_update_cursor(plane, crtc_state, NULL);
10447 }
10448
10449 static bool i9xx_cursor_get_hw_state(struct intel_plane *plane,
10450                                      enum pipe *pipe)
10451 {
10452         struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
10453         enum intel_display_power_domain power_domain;
10454         intel_wakeref_t wakeref;
10455         bool ret;
10456         u32 val;
10457
10458         /*
10459          * Not 100% correct for planes that can move between pipes,
10460          * but that's only the case for gen2-3 which don't have any
10461          * display power wells.
10462          */
10463         power_domain = POWER_DOMAIN_PIPE(plane->pipe);
10464         wakeref = intel_display_power_get_if_enabled(dev_priv, power_domain);
10465         if (!wakeref)
10466                 return false;
10467
10468         val = I915_READ(CURCNTR(plane->pipe));
10469
10470         ret = val & MCURSOR_MODE;
10471
10472         if (INTEL_GEN(dev_priv) >= 5 || IS_G4X(dev_priv))
10473                 *pipe = plane->pipe;
10474         else
10475                 *pipe = (val & MCURSOR_PIPE_SELECT_MASK) >>
10476                         MCURSOR_PIPE_SELECT_SHIFT;
10477
10478         intel_display_power_put(dev_priv, power_domain, wakeref);
10479
10480         return ret;
10481 }
10482
10483 /* VESA 640x480x72Hz mode to set on the pipe */
10484 static const struct drm_display_mode load_detect_mode = {
10485         DRM_MODE("640x480", DRM_MODE_TYPE_DEFAULT, 31500, 640, 664,
10486                  704, 832, 0, 480, 489, 491, 520, 0, DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
10487 };
10488
10489 struct drm_framebuffer *
10490 intel_framebuffer_create(struct drm_i915_gem_object *obj,
10491                          struct drm_mode_fb_cmd2 *mode_cmd)
10492 {
10493         struct intel_framebuffer *intel_fb;
10494         int ret;
10495
10496         intel_fb = kzalloc(sizeof(*intel_fb), GFP_KERNEL);
10497         if (!intel_fb)
10498                 return ERR_PTR(-ENOMEM);
10499
10500         ret = intel_framebuffer_init(intel_fb, obj, mode_cmd);
10501         if (ret)
10502                 goto err;
10503
10504         return &intel_fb->base;
10505
10506 err:
10507         kfree(intel_fb);
10508         return ERR_PTR(ret);
10509 }
10510
10511 static int intel_modeset_disable_planes(struct drm_atomic_state *state,
10512                                         struct drm_crtc *crtc)
10513 {
10514         struct drm_plane *plane;
10515         struct drm_plane_state *plane_state;
10516         int ret, i;
10517
10518         ret = drm_atomic_add_affected_planes(state, crtc);
10519         if (ret)
10520                 return ret;
10521
10522         for_each_new_plane_in_state(state, plane, plane_state, i) {
10523                 if (plane_state->crtc != crtc)
10524                         continue;
10525
10526                 ret = drm_atomic_set_crtc_for_plane(plane_state, NULL);
10527                 if (ret)
10528                         return ret;
10529
10530                 drm_atomic_set_fb_for_plane(plane_state, NULL);
10531         }
10532
10533         return 0;
10534 }
10535
10536 int intel_get_load_detect_pipe(struct drm_connector *connector,
10537                                const struct drm_display_mode *mode,
10538                                struct intel_load_detect_pipe *old,
10539                                struct drm_modeset_acquire_ctx *ctx)
10540 {
10541         struct intel_crtc *intel_crtc;
10542         struct intel_encoder *intel_encoder =
10543                 intel_attached_encoder(connector);
10544         struct drm_crtc *possible_crtc;
10545         struct drm_encoder *encoder = &intel_encoder->base;
10546         struct drm_crtc *crtc = NULL;
10547         struct drm_device *dev = encoder->dev;
10548         struct drm_i915_private *dev_priv = to_i915(dev);
10549         struct drm_mode_config *config = &dev->mode_config;
10550         struct drm_atomic_state *state = NULL, *restore_state = NULL;
10551         struct drm_connector_state *connector_state;
10552         struct intel_crtc_state *crtc_state;
10553         int ret, i = -1;
10554
10555         DRM_DEBUG_KMS("[CONNECTOR:%d:%s], [ENCODER:%d:%s]\n",
10556                       connector->base.id, connector->name,
10557                       encoder->base.id, encoder->name);
10558
10559         old->restore_state = NULL;
10560
10561         WARN_ON(!drm_modeset_is_locked(&config->connection_mutex));
10562
10563         /*
10564          * Algorithm gets a little messy:
10565          *
10566          *   - if the connector already has an assigned crtc, use it (but make
10567          *     sure it's on first)
10568          *
10569          *   - try to find the first unused crtc that can drive this connector,
10570          *     and use that if we find one
10571          */
10572
10573         /* See if we already have a CRTC for this connector */
10574         if (connector->state->crtc) {
10575                 crtc = connector->state->crtc;
10576
10577                 ret = drm_modeset_lock(&crtc->mutex, ctx);
10578                 if (ret)
10579                         goto fail;
10580
10581                 /* Make sure the crtc and connector are running */
10582                 goto found;
10583         }
10584
10585         /* Find an unused one (if possible) */
10586         for_each_crtc(dev, possible_crtc) {
10587                 i++;
10588                 if (!(encoder->possible_crtcs & (1 << i)))
10589                         continue;
10590
10591                 ret = drm_modeset_lock(&possible_crtc->mutex, ctx);
10592                 if (ret)
10593                         goto fail;
10594
10595                 if (possible_crtc->state->enable) {
10596                         drm_modeset_unlock(&possible_crtc->mutex);
10597                         continue;
10598                 }
10599
10600                 crtc = possible_crtc;
10601                 break;
10602         }
10603
10604         /*
10605          * If we didn't find an unused CRTC, don't use any.
10606          */
10607         if (!crtc) {
10608                 DRM_DEBUG_KMS("no pipe available for load-detect\n");
10609                 ret = -ENODEV;
10610                 goto fail;
10611         }
10612
10613 found:
10614         intel_crtc = to_intel_crtc(crtc);
10615
10616         state = drm_atomic_state_alloc(dev);
10617         restore_state = drm_atomic_state_alloc(dev);
10618         if (!state || !restore_state) {
10619                 ret = -ENOMEM;
10620                 goto fail;
10621         }
10622
10623         state->acquire_ctx = ctx;
10624         restore_state->acquire_ctx = ctx;
10625
10626         connector_state = drm_atomic_get_connector_state(state, connector);
10627         if (IS_ERR(connector_state)) {
10628                 ret = PTR_ERR(connector_state);
10629                 goto fail;
10630         }
10631
10632         ret = drm_atomic_set_crtc_for_connector(connector_state, crtc);
10633         if (ret)
10634                 goto fail;
10635
10636         crtc_state = intel_atomic_get_crtc_state(state, intel_crtc);
10637         if (IS_ERR(crtc_state)) {
10638                 ret = PTR_ERR(crtc_state);
10639                 goto fail;
10640         }
10641
10642         crtc_state->base.active = crtc_state->base.enable = true;
10643
10644         if (!mode)
10645                 mode = &load_detect_mode;
10646
10647         ret = drm_atomic_set_mode_for_crtc(&crtc_state->base, mode);
10648         if (ret)
10649                 goto fail;
10650
10651         ret = intel_modeset_disable_planes(state, crtc);
10652         if (ret)
10653                 goto fail;
10654
10655         ret = PTR_ERR_OR_ZERO(drm_atomic_get_connector_state(restore_state, connector));
10656         if (!ret)
10657                 ret = PTR_ERR_OR_ZERO(drm_atomic_get_crtc_state(restore_state, crtc));
10658         if (!ret)
10659                 ret = drm_atomic_add_affected_planes(restore_state, crtc);
10660         if (ret) {
10661                 DRM_DEBUG_KMS("Failed to create a copy of old state to restore: %i\n", ret);
10662                 goto fail;
10663         }
10664
10665         ret = drm_atomic_commit(state);
10666         if (ret) {
10667                 DRM_DEBUG_KMS("failed to set mode on load-detect pipe\n");
10668                 goto fail;
10669         }
10670
10671         old->restore_state = restore_state;
10672         drm_atomic_state_put(state);
10673
10674         /* let the connector get through one full cycle before testing */
10675         intel_wait_for_vblank(dev_priv, intel_crtc->pipe);
10676         return true;
10677
10678 fail:
10679         if (state) {
10680                 drm_atomic_state_put(state);
10681                 state = NULL;
10682         }
10683         if (restore_state) {
10684                 drm_atomic_state_put(restore_state);
10685                 restore_state = NULL;
10686         }
10687
10688         if (ret == -EDEADLK)
10689                 return ret;
10690
10691         return false;
10692 }
10693
10694 void intel_release_load_detect_pipe(struct drm_connector *connector,
10695                                     struct intel_load_detect_pipe *old,
10696                                     struct drm_modeset_acquire_ctx *ctx)
10697 {
10698         struct intel_encoder *intel_encoder =
10699                 intel_attached_encoder(connector);
10700         struct drm_encoder *encoder = &intel_encoder->base;
10701         struct drm_atomic_state *state = old->restore_state;
10702         int ret;
10703
10704         DRM_DEBUG_KMS("[CONNECTOR:%d:%s], [ENCODER:%d:%s]\n",
10705                       connector->base.id, connector->name,
10706                       encoder->base.id, encoder->name);
10707
10708         if (!state)
10709                 return;
10710
10711         ret = drm_atomic_helper_commit_duplicated_state(state, ctx);
10712         if (ret)
10713                 DRM_DEBUG_KMS("Couldn't release load detect pipe: %i\n", ret);
10714         drm_atomic_state_put(state);
10715 }
10716
10717 static int i9xx_pll_refclk(struct drm_device *dev,
10718                            const struct intel_crtc_state *pipe_config)
10719 {
10720         struct drm_i915_private *dev_priv = to_i915(dev);
10721         u32 dpll = pipe_config->dpll_hw_state.dpll;
10722
10723         if ((dpll & PLL_REF_INPUT_MASK) == PLLB_REF_INPUT_SPREADSPECTRUMIN)
10724                 return dev_priv->vbt.lvds_ssc_freq;
10725         else if (HAS_PCH_SPLIT(dev_priv))
10726                 return 120000;
10727         else if (!IS_GEN(dev_priv, 2))
10728                 return 96000;
10729         else
10730                 return 48000;
10731 }
10732
10733 /* Returns the clock of the currently programmed mode of the given pipe. */
10734 static void i9xx_crtc_clock_get(struct intel_crtc *crtc,
10735                                 struct intel_crtc_state *pipe_config)
10736 {
10737         struct drm_device *dev = crtc->base.dev;
10738         struct drm_i915_private *dev_priv = to_i915(dev);
10739         int pipe = pipe_config->cpu_transcoder;
10740         u32 dpll = pipe_config->dpll_hw_state.dpll;
10741         u32 fp;
10742         struct dpll clock;
10743         int port_clock;
10744         int refclk = i9xx_pll_refclk(dev, pipe_config);
10745
10746         if ((dpll & DISPLAY_RATE_SELECT_FPA1) == 0)
10747                 fp = pipe_config->dpll_hw_state.fp0;
10748         else
10749                 fp = pipe_config->dpll_hw_state.fp1;
10750
10751         clock.m1 = (fp & FP_M1_DIV_MASK) >> FP_M1_DIV_SHIFT;
10752         if (IS_PINEVIEW(dev_priv)) {
10753                 clock.n = ffs((fp & FP_N_PINEVIEW_DIV_MASK) >> FP_N_DIV_SHIFT) - 1;
10754                 clock.m2 = (fp & FP_M2_PINEVIEW_DIV_MASK) >> FP_M2_DIV_SHIFT;
10755         } else {
10756                 clock.n = (fp & FP_N_DIV_MASK) >> FP_N_DIV_SHIFT;
10757                 clock.m2 = (fp & FP_M2_DIV_MASK) >> FP_M2_DIV_SHIFT;
10758         }
10759
10760         if (!IS_GEN(dev_priv, 2)) {
10761                 if (IS_PINEVIEW(dev_priv))
10762                         clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK_PINEVIEW) >>
10763                                 DPLL_FPA01_P1_POST_DIV_SHIFT_PINEVIEW);
10764                 else
10765                         clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK) >>
10766                                DPLL_FPA01_P1_POST_DIV_SHIFT);
10767
10768                 switch (dpll & DPLL_MODE_MASK) {
10769                 case DPLLB_MODE_DAC_SERIAL:
10770                         clock.p2 = dpll & DPLL_DAC_SERIAL_P2_CLOCK_DIV_5 ?
10771                                 5 : 10;
10772                         break;
10773                 case DPLLB_MODE_LVDS:
10774                         clock.p2 = dpll & DPLLB_LVDS_P2_CLOCK_DIV_7 ?
10775                                 7 : 14;
10776                         break;
10777                 default:
10778                         DRM_DEBUG_KMS("Unknown DPLL mode %08x in programmed "
10779                                   "mode\n", (int)(dpll & DPLL_MODE_MASK));
10780                         return;
10781                 }
10782
10783                 if (IS_PINEVIEW(dev_priv))
10784                         port_clock = pnv_calc_dpll_params(refclk, &clock);
10785                 else
10786                         port_clock = i9xx_calc_dpll_params(refclk, &clock);
10787         } else {
10788                 u32 lvds = IS_I830(dev_priv) ? 0 : I915_READ(LVDS);
10789                 bool is_lvds = (pipe == 1) && (lvds & LVDS_PORT_EN);
10790
10791                 if (is_lvds) {
10792                         clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK_I830_LVDS) >>
10793                                        DPLL_FPA01_P1_POST_DIV_SHIFT);
10794
10795                         if (lvds & LVDS_CLKB_POWER_UP)
10796                                 clock.p2 = 7;
10797                         else
10798                                 clock.p2 = 14;
10799                 } else {
10800                         if (dpll & PLL_P1_DIVIDE_BY_TWO)
10801                                 clock.p1 = 2;
10802                         else {
10803                                 clock.p1 = ((dpll & DPLL_FPA01_P1_POST_DIV_MASK_I830) >>
10804                                             DPLL_FPA01_P1_POST_DIV_SHIFT) + 2;
10805                         }
10806                         if (dpll & PLL_P2_DIVIDE_BY_4)
10807                                 clock.p2 = 4;
10808                         else
10809                                 clock.p2 = 2;
10810                 }
10811
10812                 port_clock = i9xx_calc_dpll_params(refclk, &clock);
10813         }
10814
10815         /*
10816          * This value includes pixel_multiplier. We will use
10817          * port_clock to compute adjusted_mode.crtc_clock in the
10818          * encoder's get_config() function.
10819          */
10820         pipe_config->port_clock = port_clock;
10821 }
10822
10823 int intel_dotclock_calculate(int link_freq,
10824                              const struct intel_link_m_n *m_n)
10825 {
10826         /*
10827          * The calculation for the data clock is:
10828          * pixel_clock = ((m/n)*(link_clock * nr_lanes))/bpp
10829          * But we want to avoid losing precison if possible, so:
10830          * pixel_clock = ((m * link_clock * nr_lanes)/(n*bpp))
10831          *
10832          * and the link clock is simpler:
10833          * link_clock = (m * link_clock) / n
10834          */
10835
10836         if (!m_n->link_n)
10837                 return 0;
10838
10839         return div_u64(mul_u32_u32(m_n->link_m, link_freq), m_n->link_n);
10840 }
10841
10842 static void ironlake_pch_clock_get(struct intel_crtc *crtc,
10843                                    struct intel_crtc_state *pipe_config)
10844 {
10845         struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
10846
10847         /* read out port_clock from the DPLL */
10848         i9xx_crtc_clock_get(crtc, pipe_config);
10849
10850         /*
10851          * In case there is an active pipe without active ports,
10852          * we may need some idea for the dotclock anyway.
10853          * Calculate one based on the FDI configuration.
10854          */
10855         pipe_config->base.adjusted_mode.crtc_clock =
10856                 intel_dotclock_calculate(intel_fdi_link_freq(dev_priv, pipe_config),
10857                                          &pipe_config->fdi_m_n);
10858 }
10859
10860 /* Returns the currently programmed mode of the given encoder. */
10861 struct drm_display_mode *
10862 intel_encoder_current_mode(struct intel_encoder *encoder)
10863 {
10864         struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
10865         struct intel_crtc_state *crtc_state;
10866         struct drm_display_mode *mode;
10867         struct intel_crtc *crtc;
10868         enum pipe pipe;
10869
10870         if (!encoder->get_hw_state(encoder, &pipe))
10871                 return NULL;
10872
10873         crtc = intel_get_crtc_for_pipe(dev_priv, pipe);
10874
10875         mode = kzalloc(sizeof(*mode), GFP_KERNEL);
10876         if (!mode)
10877                 return NULL;
10878
10879         crtc_state = kzalloc(sizeof(*crtc_state), GFP_KERNEL);
10880         if (!crtc_state) {
10881                 kfree(mode);
10882                 return NULL;
10883         }
10884
10885         crtc_state->base.crtc = &crtc->base;
10886
10887         if (!dev_priv->display.get_pipe_config(crtc, crtc_state)) {
10888                 kfree(crtc_state);
10889                 kfree(mode);
10890                 return NULL;
10891         }
10892
10893         encoder->get_config(encoder, crtc_state);
10894
10895         intel_mode_from_pipe_config(mode, crtc_state);
10896
10897         kfree(crtc_state);
10898
10899         return mode;
10900 }
10901
10902 static void intel_crtc_destroy(struct drm_crtc *crtc)
10903 {
10904         struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
10905
10906         drm_crtc_cleanup(crtc);
10907         kfree(intel_crtc);
10908 }
10909
10910 /**
10911  * intel_wm_need_update - Check whether watermarks need updating
10912  * @cur: current plane state
10913  * @new: new plane state
10914  *
10915  * Check current plane state versus the new one to determine whether
10916  * watermarks need to be recalculated.
10917  *
10918  * Returns true or false.
10919  */
10920 static bool intel_wm_need_update(struct intel_plane_state *cur,
10921                                  struct intel_plane_state *new)
10922 {
10923         /* Update watermarks on tiling or size changes. */
10924         if (new->base.visible != cur->base.visible)
10925                 return true;
10926
10927         if (!cur->base.fb || !new->base.fb)
10928                 return false;
10929
10930         if (cur->base.fb->modifier != new->base.fb->modifier ||
10931             cur->base.rotation != new->base.rotation ||
10932             drm_rect_width(&new->base.src) != drm_rect_width(&cur->base.src) ||
10933             drm_rect_height(&new->base.src) != drm_rect_height(&cur->base.src) ||
10934             drm_rect_width(&new->base.dst) != drm_rect_width(&cur->base.dst) ||
10935             drm_rect_height(&new->base.dst) != drm_rect_height(&cur->base.dst))
10936                 return true;
10937
10938         return false;
10939 }
10940
10941 static bool needs_scaling(const struct intel_plane_state *state)
10942 {
10943         int src_w = drm_rect_width(&state->base.src) >> 16;
10944         int src_h = drm_rect_height(&state->base.src) >> 16;
10945         int dst_w = drm_rect_width(&state->base.dst);
10946         int dst_h = drm_rect_height(&state->base.dst);
10947
10948         return (src_w != dst_w || src_h != dst_h);
10949 }
10950
10951 int intel_plane_atomic_calc_changes(const struct intel_crtc_state *old_crtc_state,
10952                                     struct drm_crtc_state *crtc_state,
10953                                     const struct intel_plane_state *old_plane_state,
10954                                     struct drm_plane_state *plane_state)
10955 {
10956         struct intel_crtc_state *pipe_config = to_intel_crtc_state(crtc_state);
10957         struct drm_crtc *crtc = crtc_state->crtc;
10958         struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
10959         struct intel_plane *plane = to_intel_plane(plane_state->plane);
10960         struct drm_device *dev = crtc->dev;
10961         struct drm_i915_private *dev_priv = to_i915(dev);
10962         bool mode_changed = needs_modeset(crtc_state);
10963         bool was_crtc_enabled = old_crtc_state->base.active;
10964         bool is_crtc_enabled = crtc_state->active;
10965         bool turn_off, turn_on, visible, was_visible;
10966         struct drm_framebuffer *fb = plane_state->fb;
10967         int ret;
10968
10969         if (INTEL_GEN(dev_priv) >= 9 && plane->id != PLANE_CURSOR) {
10970                 ret = skl_update_scaler_plane(
10971                         to_intel_crtc_state(crtc_state),
10972                         to_intel_plane_state(plane_state));
10973                 if (ret)
10974                         return ret;
10975         }
10976
10977         was_visible = old_plane_state->base.visible;
10978         visible = plane_state->visible;
10979
10980         if (!was_crtc_enabled && WARN_ON(was_visible))
10981                 was_visible = false;
10982
10983         /*
10984          * Visibility is calculated as if the crtc was on, but
10985          * after scaler setup everything depends on it being off
10986          * when the crtc isn't active.
10987          *
10988          * FIXME this is wrong for watermarks. Watermarks should also
10989          * be computed as if the pipe would be active. Perhaps move
10990          * per-plane wm computation to the .check_plane() hook, and
10991          * only combine the results from all planes in the current place?
10992          */
10993         if (!is_crtc_enabled) {
10994                 plane_state->visible = visible = false;
10995                 to_intel_crtc_state(crtc_state)->active_planes &= ~BIT(plane->id);
10996         }
10997
10998         if (!was_visible && !visible)
10999                 return 0;
11000
11001         if (fb != old_plane_state->base.fb)
11002                 pipe_config->fb_changed = true;
11003
11004         turn_off = was_visible && (!visible || mode_changed);
11005         turn_on = visible && (!was_visible || mode_changed);
11006
11007         DRM_DEBUG_ATOMIC("[CRTC:%d:%s] has [PLANE:%d:%s] with fb %i\n",
11008                          intel_crtc->base.base.id, intel_crtc->base.name,
11009                          plane->base.base.id, plane->base.name,
11010                          fb ? fb->base.id : -1);
11011
11012         DRM_DEBUG_ATOMIC("[PLANE:%d:%s] visible %i -> %i, off %i, on %i, ms %i\n",
11013                          plane->base.base.id, plane->base.name,
11014                          was_visible, visible,
11015                          turn_off, turn_on, mode_changed);
11016
11017         if (turn_on) {
11018                 if (INTEL_GEN(dev_priv) < 5 && !IS_G4X(dev_priv))
11019                         pipe_config->update_wm_pre = true;
11020
11021                 /* must disable cxsr around plane enable/disable */
11022                 if (plane->id != PLANE_CURSOR)
11023                         pipe_config->disable_cxsr = true;
11024         } else if (turn_off) {
11025                 if (INTEL_GEN(dev_priv) < 5 && !IS_G4X(dev_priv))
11026                         pipe_config->update_wm_post = true;
11027
11028                 /* must disable cxsr around plane enable/disable */
11029                 if (plane->id != PLANE_CURSOR)
11030                         pipe_config->disable_cxsr = true;
11031         } else if (intel_wm_need_update(to_intel_plane_state(plane->base.state),
11032                                         to_intel_plane_state(plane_state))) {
11033                 if (INTEL_GEN(dev_priv) < 5 && !IS_G4X(dev_priv)) {
11034                         /* FIXME bollocks */
11035                         pipe_config->update_wm_pre = true;
11036                         pipe_config->update_wm_post = true;
11037                 }
11038         }
11039
11040         if (visible || was_visible)
11041                 pipe_config->fb_bits |= plane->frontbuffer_bit;
11042
11043         /*
11044          * ILK/SNB DVSACNTR/Sprite Enable
11045          * IVB SPR_CTL/Sprite Enable
11046          * "When in Self Refresh Big FIFO mode, a write to enable the
11047          *  plane will be internally buffered and delayed while Big FIFO
11048          *  mode is exiting."
11049          *
11050          * Which means that enabling the sprite can take an extra frame
11051          * when we start in big FIFO mode (LP1+). Thus we need to drop
11052          * down to LP0 and wait for vblank in order to make sure the
11053          * sprite gets enabled on the next vblank after the register write.
11054          * Doing otherwise would risk enabling the sprite one frame after
11055          * we've already signalled flip completion. We can resume LP1+
11056          * once the sprite has been enabled.
11057          *
11058          *
11059          * WaCxSRDisabledForSpriteScaling:ivb
11060          * IVB SPR_SCALE/Scaling Enable
11061          * "Low Power watermarks must be disabled for at least one
11062          *  frame before enabling sprite scaling, and kept disabled
11063          *  until sprite scaling is disabled."
11064          *
11065          * ILK/SNB DVSASCALE/Scaling Enable
11066          * "When in Self Refresh Big FIFO mode, scaling enable will be
11067          *  masked off while Big FIFO mode is exiting."
11068          *
11069          * Despite the w/a only being listed for IVB we assume that
11070          * the ILK/SNB note has similar ramifications, hence we apply
11071          * the w/a on all three platforms.
11072          *
11073          * With experimental results seems this is needed also for primary
11074          * plane, not only sprite plane.
11075          */
11076         if (plane->id != PLANE_CURSOR &&
11077             (IS_GEN_RANGE(dev_priv, 5, 6) ||
11078              IS_IVYBRIDGE(dev_priv)) &&
11079             (turn_on || (!needs_scaling(old_plane_state) &&
11080                          needs_scaling(to_intel_plane_state(plane_state)))))
11081                 pipe_config->disable_lp_wm = true;
11082
11083         return 0;
11084 }
11085
11086 static bool encoders_cloneable(const struct intel_encoder *a,
11087                                const struct intel_encoder *b)
11088 {
11089         /* masks could be asymmetric, so check both ways */
11090         return a == b || (a->cloneable & (1 << b->type) &&
11091                           b->cloneable & (1 << a->type));
11092 }
11093
11094 static bool check_single_encoder_cloning(struct drm_atomic_state *state,
11095                                          struct intel_crtc *crtc,
11096                                          struct intel_encoder *encoder)
11097 {
11098         struct intel_encoder *source_encoder;
11099         struct drm_connector *connector;
11100         struct drm_connector_state *connector_state;
11101         int i;
11102
11103         for_each_new_connector_in_state(state, connector, connector_state, i) {
11104                 if (connector_state->crtc != &crtc->base)
11105                         continue;
11106
11107                 source_encoder =
11108                         to_intel_encoder(connector_state->best_encoder);
11109                 if (!encoders_cloneable(encoder, source_encoder))
11110                         return false;
11111         }
11112
11113         return true;
11114 }
11115
11116 static int icl_add_linked_planes(struct intel_atomic_state *state)
11117 {
11118         struct intel_plane *plane, *linked;
11119         struct intel_plane_state *plane_state, *linked_plane_state;
11120         int i;
11121
11122         for_each_new_intel_plane_in_state(state, plane, plane_state, i) {
11123                 linked = plane_state->linked_plane;
11124
11125                 if (!linked)
11126                         continue;
11127
11128                 linked_plane_state = intel_atomic_get_plane_state(state, linked);
11129                 if (IS_ERR(linked_plane_state))
11130                         return PTR_ERR(linked_plane_state);
11131
11132                 WARN_ON(linked_plane_state->linked_plane != plane);
11133                 WARN_ON(linked_plane_state->slave == plane_state->slave);
11134         }
11135
11136         return 0;
11137 }
11138
11139 static int icl_check_nv12_planes(struct intel_crtc_state *crtc_state)
11140 {
11141         struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
11142         struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
11143         struct intel_atomic_state *state = to_intel_atomic_state(crtc_state->base.state);
11144         struct intel_plane *plane, *linked;
11145         struct intel_plane_state *plane_state;
11146         int i;
11147
11148         if (INTEL_GEN(dev_priv) < 11)
11149                 return 0;
11150
11151         /*
11152          * Destroy all old plane links and make the slave plane invisible
11153          * in the crtc_state->active_planes mask.
11154          */
11155         for_each_new_intel_plane_in_state(state, plane, plane_state, i) {
11156                 if (plane->pipe != crtc->pipe || !plane_state->linked_plane)
11157                         continue;
11158
11159                 plane_state->linked_plane = NULL;
11160                 if (plane_state->slave && !plane_state->base.visible) {
11161                         crtc_state->active_planes &= ~BIT(plane->id);
11162                         crtc_state->update_planes |= BIT(plane->id);
11163                 }
11164
11165                 plane_state->slave = false;
11166         }
11167
11168         if (!crtc_state->nv12_planes)
11169                 return 0;
11170
11171         for_each_new_intel_plane_in_state(state, plane, plane_state, i) {
11172                 struct intel_plane_state *linked_state = NULL;
11173
11174                 if (plane->pipe != crtc->pipe ||
11175                     !(crtc_state->nv12_planes & BIT(plane->id)))
11176                         continue;
11177
11178                 for_each_intel_plane_on_crtc(&dev_priv->drm, crtc, linked) {
11179                         if (!icl_is_nv12_y_plane(linked->id))
11180                                 continue;
11181
11182                         if (crtc_state->active_planes & BIT(linked->id))
11183                                 continue;
11184
11185                         linked_state = intel_atomic_get_plane_state(state, linked);
11186                         if (IS_ERR(linked_state))
11187                                 return PTR_ERR(linked_state);
11188
11189                         break;
11190                 }
11191
11192                 if (!linked_state) {
11193                         DRM_DEBUG_KMS("Need %d free Y planes for planar YUV\n",
11194                                       hweight8(crtc_state->nv12_planes));
11195
11196                         return -EINVAL;
11197                 }
11198
11199                 plane_state->linked_plane = linked;
11200
11201                 linked_state->slave = true;
11202                 linked_state->linked_plane = plane;
11203                 crtc_state->active_planes |= BIT(linked->id);
11204                 crtc_state->update_planes |= BIT(linked->id);
11205                 DRM_DEBUG_KMS("Using %s as Y plane for %s\n", linked->base.name, plane->base.name);
11206         }
11207
11208         return 0;
11209 }
11210
11211 static int intel_crtc_atomic_check(struct drm_crtc *crtc,
11212                                    struct drm_crtc_state *crtc_state)
11213 {
11214         struct drm_i915_private *dev_priv = to_i915(crtc->dev);
11215         struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
11216         struct intel_crtc_state *pipe_config =
11217                 to_intel_crtc_state(crtc_state);
11218         int ret;
11219         bool mode_changed = needs_modeset(crtc_state);
11220
11221         if (INTEL_GEN(dev_priv) < 5 && !IS_G4X(dev_priv) &&
11222             mode_changed && !crtc_state->active)
11223                 pipe_config->update_wm_post = true;
11224
11225         if (mode_changed && crtc_state->enable &&
11226             dev_priv->display.crtc_compute_clock &&
11227             !WARN_ON(pipe_config->shared_dpll)) {
11228                 ret = dev_priv->display.crtc_compute_clock(intel_crtc,
11229                                                            pipe_config);
11230                 if (ret)
11231                         return ret;
11232         }
11233
11234         if (mode_changed || pipe_config->update_pipe ||
11235             crtc_state->color_mgmt_changed) {
11236                 ret = intel_color_check(pipe_config);
11237                 if (ret)
11238                         return ret;
11239         }
11240
11241         ret = 0;
11242         if (dev_priv->display.compute_pipe_wm) {
11243                 ret = dev_priv->display.compute_pipe_wm(pipe_config);
11244                 if (ret) {
11245                         DRM_DEBUG_KMS("Target pipe watermarks are invalid\n");
11246                         return ret;
11247                 }
11248         }
11249
11250         if (dev_priv->display.compute_intermediate_wm) {
11251                 if (WARN_ON(!dev_priv->display.compute_pipe_wm))
11252                         return 0;
11253
11254                 /*
11255                  * Calculate 'intermediate' watermarks that satisfy both the
11256                  * old state and the new state.  We can program these
11257                  * immediately.
11258                  */
11259                 ret = dev_priv->display.compute_intermediate_wm(pipe_config);
11260                 if (ret) {
11261                         DRM_DEBUG_KMS("No valid intermediate pipe watermarks are possible\n");
11262                         return ret;
11263                 }
11264         }
11265
11266         if (INTEL_GEN(dev_priv) >= 9) {
11267                 if (mode_changed || pipe_config->update_pipe)
11268                         ret = skl_update_scaler_crtc(pipe_config);
11269
11270                 if (!ret)
11271                         ret = icl_check_nv12_planes(pipe_config);
11272                 if (!ret)
11273                         ret = skl_check_pipe_max_pixel_rate(intel_crtc,
11274                                                             pipe_config);
11275                 if (!ret)
11276                         ret = intel_atomic_setup_scalers(dev_priv, intel_crtc,
11277                                                          pipe_config);
11278         }
11279
11280         if (HAS_IPS(dev_priv))
11281                 pipe_config->ips_enabled = hsw_compute_ips_config(pipe_config);
11282
11283         return ret;
11284 }
11285
11286 static const struct drm_crtc_helper_funcs intel_helper_funcs = {
11287         .atomic_check = intel_crtc_atomic_check,
11288 };
11289
11290 static void intel_modeset_update_connector_atomic_state(struct drm_device *dev)
11291 {
11292         struct intel_connector *connector;
11293         struct drm_connector_list_iter conn_iter;
11294
11295         drm_connector_list_iter_begin(dev, &conn_iter);
11296         for_each_intel_connector_iter(connector, &conn_iter) {
11297                 if (connector->base.state->crtc)
11298                         drm_connector_put(&connector->base);
11299
11300                 if (connector->base.encoder) {
11301                         connector->base.state->best_encoder =
11302                                 connector->base.encoder;
11303                         connector->base.state->crtc =
11304                                 connector->base.encoder->crtc;
11305
11306                         drm_connector_get(&connector->base);
11307                 } else {
11308                         connector->base.state->best_encoder = NULL;
11309                         connector->base.state->crtc = NULL;
11310                 }
11311         }
11312         drm_connector_list_iter_end(&conn_iter);
11313 }
11314
11315 static int
11316 compute_sink_pipe_bpp(const struct drm_connector_state *conn_state,
11317                       struct intel_crtc_state *pipe_config)
11318 {
11319         struct drm_connector *connector = conn_state->connector;
11320         const struct drm_display_info *info = &connector->display_info;
11321         int bpp;
11322
11323         switch (conn_state->max_bpc) {
11324         case 6 ... 7:
11325                 bpp = 6 * 3;
11326                 break;
11327         case 8 ... 9:
11328                 bpp = 8 * 3;
11329                 break;
11330         case 10 ... 11:
11331                 bpp = 10 * 3;
11332                 break;
11333         case 12:
11334                 bpp = 12 * 3;
11335                 break;
11336         default:
11337                 return -EINVAL;
11338         }
11339
11340         if (bpp < pipe_config->pipe_bpp) {
11341                 DRM_DEBUG_KMS("[CONNECTOR:%d:%s] Limiting display bpp to %d instead of "
11342                               "EDID bpp %d, requested bpp %d, max platform bpp %d\n",
11343                               connector->base.id, connector->name,
11344                               bpp, 3 * info->bpc, 3 * conn_state->max_requested_bpc,
11345                               pipe_config->pipe_bpp);
11346
11347                 pipe_config->pipe_bpp = bpp;
11348         }
11349
11350         return 0;
11351 }
11352
11353 static int
11354 compute_baseline_pipe_bpp(struct intel_crtc *crtc,
11355                           struct intel_crtc_state *pipe_config)
11356 {
11357         struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
11358         struct drm_atomic_state *state = pipe_config->base.state;
11359         struct drm_connector *connector;
11360         struct drm_connector_state *connector_state;
11361         int bpp, i;
11362
11363         if ((IS_G4X(dev_priv) || IS_VALLEYVIEW(dev_priv) ||
11364             IS_CHERRYVIEW(dev_priv)))
11365                 bpp = 10*3;
11366         else if (INTEL_GEN(dev_priv) >= 5)
11367                 bpp = 12*3;
11368         else
11369                 bpp = 8*3;
11370
11371         pipe_config->pipe_bpp = bpp;
11372
11373         /* Clamp display bpp to connector max bpp */
11374         for_each_new_connector_in_state(state, connector, connector_state, i) {
11375                 int ret;
11376
11377                 if (connector_state->crtc != &crtc->base)
11378                         continue;
11379
11380                 ret = compute_sink_pipe_bpp(connector_state, pipe_config);
11381                 if (ret)
11382                         return ret;
11383         }
11384
11385         return 0;
11386 }
11387
11388 static void intel_dump_crtc_timings(const struct drm_display_mode *mode)
11389 {
11390         DRM_DEBUG_KMS("crtc timings: %d %d %d %d %d %d %d %d %d, "
11391                         "type: 0x%x flags: 0x%x\n",
11392                 mode->crtc_clock,
11393                 mode->crtc_hdisplay, mode->crtc_hsync_start,
11394                 mode->crtc_hsync_end, mode->crtc_htotal,
11395                 mode->crtc_vdisplay, mode->crtc_vsync_start,
11396                 mode->crtc_vsync_end, mode->crtc_vtotal, mode->type, mode->flags);
11397 }
11398
11399 static inline void
11400 intel_dump_m_n_config(struct intel_crtc_state *pipe_config, char *id,
11401                       unsigned int lane_count, struct intel_link_m_n *m_n)
11402 {
11403         DRM_DEBUG_KMS("%s: lanes: %i; gmch_m: %u, gmch_n: %u, link_m: %u, link_n: %u, tu: %u\n",
11404                       id, lane_count,
11405                       m_n->gmch_m, m_n->gmch_n,
11406                       m_n->link_m, m_n->link_n, m_n->tu);
11407 }
11408
11409 static void
11410 intel_dump_infoframe(struct drm_i915_private *dev_priv,
11411                      const union hdmi_infoframe *frame)
11412 {
11413         if ((drm_debug & DRM_UT_KMS) == 0)
11414                 return;
11415
11416         hdmi_infoframe_log(KERN_DEBUG, dev_priv->drm.dev, frame);
11417 }
11418
11419 #define OUTPUT_TYPE(x) [INTEL_OUTPUT_ ## x] = #x
11420
11421 static const char * const output_type_str[] = {
11422         OUTPUT_TYPE(UNUSED),
11423         OUTPUT_TYPE(ANALOG),
11424         OUTPUT_TYPE(DVO),
11425         OUTPUT_TYPE(SDVO),
11426         OUTPUT_TYPE(LVDS),
11427         OUTPUT_TYPE(TVOUT),
11428         OUTPUT_TYPE(HDMI),
11429         OUTPUT_TYPE(DP),
11430         OUTPUT_TYPE(EDP),
11431         OUTPUT_TYPE(DSI),
11432         OUTPUT_TYPE(DDI),
11433         OUTPUT_TYPE(DP_MST),
11434 };
11435
11436 #undef OUTPUT_TYPE
11437
11438 static void snprintf_output_types(char *buf, size_t len,
11439                                   unsigned int output_types)
11440 {
11441         char *str = buf;
11442         int i;
11443
11444         str[0] = '\0';
11445
11446         for (i = 0; i < ARRAY_SIZE(output_type_str); i++) {
11447                 int r;
11448
11449                 if ((output_types & BIT(i)) == 0)
11450                         continue;
11451
11452                 r = snprintf(str, len, "%s%s",
11453                              str != buf ? "," : "", output_type_str[i]);
11454                 if (r >= len)
11455                         break;
11456                 str += r;
11457                 len -= r;
11458
11459                 output_types &= ~BIT(i);
11460         }
11461
11462         WARN_ON_ONCE(output_types != 0);
11463 }
11464
11465 static const char * const output_format_str[] = {
11466         [INTEL_OUTPUT_FORMAT_INVALID] = "Invalid",
11467         [INTEL_OUTPUT_FORMAT_RGB] = "RGB",
11468         [INTEL_OUTPUT_FORMAT_YCBCR420] = "YCBCR4:2:0",
11469         [INTEL_OUTPUT_FORMAT_YCBCR444] = "YCBCR4:4:4",
11470 };
11471
11472 static const char *output_formats(enum intel_output_format format)
11473 {
11474         if (format >= ARRAY_SIZE(output_format_str))
11475                 format = INTEL_OUTPUT_FORMAT_INVALID;
11476         return output_format_str[format];
11477 }
11478
11479 static void intel_dump_pipe_config(struct intel_crtc *crtc,
11480                                    struct intel_crtc_state *pipe_config,
11481                                    const char *context)
11482 {
11483         struct drm_device *dev = crtc->base.dev;
11484         struct drm_i915_private *dev_priv = to_i915(dev);
11485         struct drm_plane *plane;
11486         struct intel_plane *intel_plane;
11487         struct intel_plane_state *state;
11488         struct drm_framebuffer *fb;
11489         char buf[64];
11490
11491         DRM_DEBUG_KMS("[CRTC:%d:%s]%s\n",
11492                       crtc->base.base.id, crtc->base.name, context);
11493
11494         snprintf_output_types(buf, sizeof(buf), pipe_config->output_types);
11495         DRM_DEBUG_KMS("output_types: %s (0x%x)\n",
11496                       buf, pipe_config->output_types);
11497
11498         DRM_DEBUG_KMS("output format: %s\n",
11499                       output_formats(pipe_config->output_format));
11500
11501         DRM_DEBUG_KMS("cpu_transcoder: %s, pipe bpp: %i, dithering: %i\n",
11502                       transcoder_name(pipe_config->cpu_transcoder),
11503                       pipe_config->pipe_bpp, pipe_config->dither);
11504
11505         if (pipe_config->has_pch_encoder)
11506                 intel_dump_m_n_config(pipe_config, "fdi",
11507                                       pipe_config->fdi_lanes,
11508                                       &pipe_config->fdi_m_n);
11509
11510         if (intel_crtc_has_dp_encoder(pipe_config)) {
11511                 intel_dump_m_n_config(pipe_config, "dp m_n",
11512                                 pipe_config->lane_count, &pipe_config->dp_m_n);
11513                 if (pipe_config->has_drrs)
11514                         intel_dump_m_n_config(pipe_config, "dp m2_n2",
11515                                               pipe_config->lane_count,
11516                                               &pipe_config->dp_m2_n2);
11517         }
11518
11519         DRM_DEBUG_KMS("audio: %i, infoframes: %i\n",
11520                       pipe_config->has_audio, pipe_config->has_infoframe);
11521
11522         DRM_DEBUG_KMS("infoframes enabled: 0x%x\n",
11523                       pipe_config->infoframes.enable);
11524
11525         if (pipe_config->infoframes.enable &
11526             intel_hdmi_infoframe_enable(HDMI_PACKET_TYPE_GENERAL_CONTROL))
11527                 DRM_DEBUG_KMS("GCP: 0x%x\n", pipe_config->infoframes.gcp);
11528         if (pipe_config->infoframes.enable &
11529             intel_hdmi_infoframe_enable(HDMI_INFOFRAME_TYPE_AVI))
11530                 intel_dump_infoframe(dev_priv, &pipe_config->infoframes.avi);
11531         if (pipe_config->infoframes.enable &
11532             intel_hdmi_infoframe_enable(HDMI_INFOFRAME_TYPE_SPD))
11533                 intel_dump_infoframe(dev_priv, &pipe_config->infoframes.spd);
11534         if (pipe_config->infoframes.enable &
11535             intel_hdmi_infoframe_enable(HDMI_INFOFRAME_TYPE_VENDOR))
11536                 intel_dump_infoframe(dev_priv, &pipe_config->infoframes.hdmi);
11537
11538         DRM_DEBUG_KMS("requested mode:\n");
11539         drm_mode_debug_printmodeline(&pipe_config->base.mode);
11540         DRM_DEBUG_KMS("adjusted mode:\n");
11541         drm_mode_debug_printmodeline(&pipe_config->base.adjusted_mode);
11542         intel_dump_crtc_timings(&pipe_config->base.adjusted_mode);
11543         DRM_DEBUG_KMS("port clock: %d, pipe src size: %dx%d, pixel rate %d\n",
11544                       pipe_config->port_clock,
11545                       pipe_config->pipe_src_w, pipe_config->pipe_src_h,
11546                       pipe_config->pixel_rate);
11547
11548         if (INTEL_GEN(dev_priv) >= 9)
11549                 DRM_DEBUG_KMS("num_scalers: %d, scaler_users: 0x%x, scaler_id: %d\n",
11550                               crtc->num_scalers,
11551                               pipe_config->scaler_state.scaler_users,
11552                               pipe_config->scaler_state.scaler_id);
11553
11554         if (HAS_GMCH(dev_priv))
11555                 DRM_DEBUG_KMS("gmch pfit: control: 0x%08x, ratios: 0x%08x, lvds border: 0x%08x\n",
11556                               pipe_config->gmch_pfit.control,
11557                               pipe_config->gmch_pfit.pgm_ratios,
11558                               pipe_config->gmch_pfit.lvds_border_bits);
11559         else
11560                 DRM_DEBUG_KMS("pch pfit: pos: 0x%08x, size: 0x%08x, %s, force thru: %s\n",
11561                               pipe_config->pch_pfit.pos,
11562                               pipe_config->pch_pfit.size,
11563                               enableddisabled(pipe_config->pch_pfit.enabled),
11564                               yesno(pipe_config->pch_pfit.force_thru));
11565
11566         DRM_DEBUG_KMS("ips: %i, double wide: %i\n",
11567                       pipe_config->ips_enabled, pipe_config->double_wide);
11568
11569         intel_dpll_dump_hw_state(dev_priv, &pipe_config->dpll_hw_state);
11570
11571         DRM_DEBUG_KMS("planes on this crtc\n");
11572         list_for_each_entry(plane, &dev->mode_config.plane_list, head) {
11573                 struct drm_format_name_buf format_name;
11574                 intel_plane = to_intel_plane(plane);
11575                 if (intel_plane->pipe != crtc->pipe)
11576                         continue;
11577
11578                 state = to_intel_plane_state(plane->state);
11579                 fb = state->base.fb;
11580                 if (!fb) {
11581                         DRM_DEBUG_KMS("[PLANE:%d:%s] disabled, scaler_id = %d\n",
11582                                       plane->base.id, plane->name, state->scaler_id);
11583                         continue;
11584                 }
11585
11586                 DRM_DEBUG_KMS("[PLANE:%d:%s] FB:%d, fb = %ux%u format = %s\n",
11587                               plane->base.id, plane->name,
11588                               fb->base.id, fb->width, fb->height,
11589                               drm_get_format_name(fb->format->format, &format_name));
11590                 if (INTEL_GEN(dev_priv) >= 9)
11591                         DRM_DEBUG_KMS("\tscaler:%d src %dx%d+%d+%d dst %dx%d+%d+%d\n",
11592                                       state->scaler_id,
11593                                       state->base.src.x1 >> 16,
11594                                       state->base.src.y1 >> 16,
11595                                       drm_rect_width(&state->base.src) >> 16,
11596                                       drm_rect_height(&state->base.src) >> 16,
11597                                       state->base.dst.x1, state->base.dst.y1,
11598                                       drm_rect_width(&state->base.dst),
11599                                       drm_rect_height(&state->base.dst));
11600         }
11601 }
11602
11603 static bool check_digital_port_conflicts(struct drm_atomic_state *state)
11604 {
11605         struct drm_device *dev = state->dev;
11606         struct drm_connector *connector;
11607         struct drm_connector_list_iter conn_iter;
11608         unsigned int used_ports = 0;
11609         unsigned int used_mst_ports = 0;
11610         bool ret = true;
11611
11612         /*
11613          * Walk the connector list instead of the encoder
11614          * list to detect the problem on ddi platforms
11615          * where there's just one encoder per digital port.
11616          */
11617         drm_connector_list_iter_begin(dev, &conn_iter);
11618         drm_for_each_connector_iter(connector, &conn_iter) {
11619                 struct drm_connector_state *connector_state;
11620                 struct intel_encoder *encoder;
11621
11622                 connector_state = drm_atomic_get_new_connector_state(state, connector);
11623                 if (!connector_state)
11624                         connector_state = connector->state;
11625
11626                 if (!connector_state->best_encoder)
11627                         continue;
11628
11629                 encoder = to_intel_encoder(connector_state->best_encoder);
11630
11631                 WARN_ON(!connector_state->crtc);
11632
11633                 switch (encoder->type) {
11634                         unsigned int port_mask;
11635                 case INTEL_OUTPUT_DDI:
11636                         if (WARN_ON(!HAS_DDI(to_i915(dev))))
11637                                 break;
11638                         /* else: fall through */
11639                 case INTEL_OUTPUT_DP:
11640                 case INTEL_OUTPUT_HDMI:
11641                 case INTEL_OUTPUT_EDP:
11642                         port_mask = 1 << encoder->port;
11643
11644                         /* the same port mustn't appear more than once */
11645                         if (used_ports & port_mask)
11646                                 ret = false;
11647
11648                         used_ports |= port_mask;
11649                         break;
11650                 case INTEL_OUTPUT_DP_MST:
11651                         used_mst_ports |=
11652                                 1 << encoder->port;
11653                         break;
11654                 default:
11655                         break;
11656                 }
11657         }
11658         drm_connector_list_iter_end(&conn_iter);
11659
11660         /* can't mix MST and SST/HDMI on the same port */
11661         if (used_ports & used_mst_ports)
11662                 return false;
11663
11664         return ret;
11665 }
11666
11667 static int
11668 clear_intel_crtc_state(struct intel_crtc_state *crtc_state)
11669 {
11670         struct drm_i915_private *dev_priv =
11671                 to_i915(crtc_state->base.crtc->dev);
11672         struct intel_crtc_state *saved_state;
11673
11674         saved_state = kzalloc(sizeof(*saved_state), GFP_KERNEL);
11675         if (!saved_state)
11676                 return -ENOMEM;
11677
11678         /* FIXME: before the switch to atomic started, a new pipe_config was
11679          * kzalloc'd. Code that depends on any field being zero should be
11680          * fixed, so that the crtc_state can be safely duplicated. For now,
11681          * only fields that are know to not cause problems are preserved. */
11682
11683         saved_state->scaler_state = crtc_state->scaler_state;
11684         saved_state->shared_dpll = crtc_state->shared_dpll;
11685         saved_state->dpll_hw_state = crtc_state->dpll_hw_state;
11686         saved_state->crc_enabled = crtc_state->crc_enabled;
11687         if (IS_G4X(dev_priv) ||
11688             IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
11689                 saved_state->wm = crtc_state->wm;
11690
11691         /* Keep base drm_crtc_state intact, only clear our extended struct */
11692         BUILD_BUG_ON(offsetof(struct intel_crtc_state, base));
11693         memcpy(&crtc_state->base + 1, &saved_state->base + 1,
11694                sizeof(*crtc_state) - sizeof(crtc_state->base));
11695
11696         kfree(saved_state);
11697         return 0;
11698 }
11699
11700 static int
11701 intel_modeset_pipe_config(struct drm_crtc *crtc,
11702                           struct intel_crtc_state *pipe_config)
11703 {
11704         struct drm_atomic_state *state = pipe_config->base.state;
11705         struct intel_encoder *encoder;
11706         struct drm_connector *connector;
11707         struct drm_connector_state *connector_state;
11708         int base_bpp, ret;
11709         int i;
11710         bool retry = true;
11711
11712         ret = clear_intel_crtc_state(pipe_config);
11713         if (ret)
11714                 return ret;
11715
11716         pipe_config->cpu_transcoder =
11717                 (enum transcoder) to_intel_crtc(crtc)->pipe;
11718
11719         /*
11720          * Sanitize sync polarity flags based on requested ones. If neither
11721          * positive or negative polarity is requested, treat this as meaning
11722          * negative polarity.
11723          */
11724         if (!(pipe_config->base.adjusted_mode.flags &
11725               (DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NHSYNC)))
11726                 pipe_config->base.adjusted_mode.flags |= DRM_MODE_FLAG_NHSYNC;
11727
11728         if (!(pipe_config->base.adjusted_mode.flags &
11729               (DRM_MODE_FLAG_PVSYNC | DRM_MODE_FLAG_NVSYNC)))
11730                 pipe_config->base.adjusted_mode.flags |= DRM_MODE_FLAG_NVSYNC;
11731
11732         ret = compute_baseline_pipe_bpp(to_intel_crtc(crtc),
11733                                         pipe_config);
11734         if (ret)
11735                 return ret;
11736
11737         base_bpp = pipe_config->pipe_bpp;
11738
11739         /*
11740          * Determine the real pipe dimensions. Note that stereo modes can
11741          * increase the actual pipe size due to the frame doubling and
11742          * insertion of additional space for blanks between the frame. This
11743          * is stored in the crtc timings. We use the requested mode to do this
11744          * computation to clearly distinguish it from the adjusted mode, which
11745          * can be changed by the connectors in the below retry loop.
11746          */
11747         drm_mode_get_hv_timing(&pipe_config->base.mode,
11748                                &pipe_config->pipe_src_w,
11749                                &pipe_config->pipe_src_h);
11750
11751         for_each_new_connector_in_state(state, connector, connector_state, i) {
11752                 if (connector_state->crtc != crtc)
11753                         continue;
11754
11755                 encoder = to_intel_encoder(connector_state->best_encoder);
11756
11757                 if (!check_single_encoder_cloning(state, to_intel_crtc(crtc), encoder)) {
11758                         DRM_DEBUG_KMS("rejecting invalid cloning configuration\n");
11759                         return -EINVAL;
11760                 }
11761
11762                 /*
11763                  * Determine output_types before calling the .compute_config()
11764                  * hooks so that the hooks can use this information safely.
11765                  */
11766                 if (encoder->compute_output_type)
11767                         pipe_config->output_types |=
11768                                 BIT(encoder->compute_output_type(encoder, pipe_config,
11769                                                                  connector_state));
11770                 else
11771                         pipe_config->output_types |= BIT(encoder->type);
11772         }
11773
11774 encoder_retry:
11775         /* Ensure the port clock defaults are reset when retrying. */
11776         pipe_config->port_clock = 0;
11777         pipe_config->pixel_multiplier = 1;
11778
11779         /* Fill in default crtc timings, allow encoders to overwrite them. */
11780         drm_mode_set_crtcinfo(&pipe_config->base.adjusted_mode,
11781                               CRTC_STEREO_DOUBLE);
11782
11783         /* Pass our mode to the connectors and the CRTC to give them a chance to
11784          * adjust it according to limitations or connector properties, and also
11785          * a chance to reject the mode entirely.
11786          */
11787         for_each_new_connector_in_state(state, connector, connector_state, i) {
11788                 if (connector_state->crtc != crtc)
11789                         continue;
11790
11791                 encoder = to_intel_encoder(connector_state->best_encoder);
11792                 ret = encoder->compute_config(encoder, pipe_config,
11793                                               connector_state);
11794                 if (ret < 0) {
11795                         if (ret != -EDEADLK)
11796                                 DRM_DEBUG_KMS("Encoder config failure: %d\n",
11797                                               ret);
11798                         return ret;
11799                 }
11800         }
11801
11802         /* Set default port clock if not overwritten by the encoder. Needs to be
11803          * done afterwards in case the encoder adjusts the mode. */
11804         if (!pipe_config->port_clock)
11805                 pipe_config->port_clock = pipe_config->base.adjusted_mode.crtc_clock
11806                         * pipe_config->pixel_multiplier;
11807
11808         ret = intel_crtc_compute_config(to_intel_crtc(crtc), pipe_config);
11809         if (ret == -EDEADLK)
11810                 return ret;
11811         if (ret < 0) {
11812                 DRM_DEBUG_KMS("CRTC fixup failed\n");
11813                 return ret;
11814         }
11815
11816         if (ret == RETRY) {
11817                 if (WARN(!retry, "loop in pipe configuration computation\n"))
11818                         return -EINVAL;
11819
11820                 DRM_DEBUG_KMS("CRTC bw constrained, retrying\n");
11821                 retry = false;
11822                 goto encoder_retry;
11823         }
11824
11825         /* Dithering seems to not pass-through bits correctly when it should, so
11826          * only enable it on 6bpc panels and when its not a compliance
11827          * test requesting 6bpc video pattern.
11828          */
11829         pipe_config->dither = (pipe_config->pipe_bpp == 6*3) &&
11830                 !pipe_config->dither_force_disable;
11831         DRM_DEBUG_KMS("hw max bpp: %i, pipe bpp: %i, dithering: %i\n",
11832                       base_bpp, pipe_config->pipe_bpp, pipe_config->dither);
11833
11834         return 0;
11835 }
11836
11837 static bool intel_fuzzy_clock_check(int clock1, int clock2)
11838 {
11839         int diff;
11840
11841         if (clock1 == clock2)
11842                 return true;
11843
11844         if (!clock1 || !clock2)
11845                 return false;
11846
11847         diff = abs(clock1 - clock2);
11848
11849         if (((((diff + clock1 + clock2) * 100)) / (clock1 + clock2)) < 105)
11850                 return true;
11851
11852         return false;
11853 }
11854
11855 static bool
11856 intel_compare_m_n(unsigned int m, unsigned int n,
11857                   unsigned int m2, unsigned int n2,
11858                   bool exact)
11859 {
11860         if (m == m2 && n == n2)
11861                 return true;
11862
11863         if (exact || !m || !n || !m2 || !n2)
11864                 return false;
11865
11866         BUILD_BUG_ON(DATA_LINK_M_N_MASK > INT_MAX);
11867
11868         if (n > n2) {
11869                 while (n > n2) {
11870                         m2 <<= 1;
11871                         n2 <<= 1;
11872                 }
11873         } else if (n < n2) {
11874                 while (n < n2) {
11875                         m <<= 1;
11876                         n <<= 1;
11877                 }
11878         }
11879
11880         if (n != n2)
11881                 return false;
11882
11883         return intel_fuzzy_clock_check(m, m2);
11884 }
11885
11886 static bool
11887 intel_compare_link_m_n(const struct intel_link_m_n *m_n,
11888                        struct intel_link_m_n *m2_n2,
11889                        bool adjust)
11890 {
11891         if (m_n->tu == m2_n2->tu &&
11892             intel_compare_m_n(m_n->gmch_m, m_n->gmch_n,
11893                               m2_n2->gmch_m, m2_n2->gmch_n, !adjust) &&
11894             intel_compare_m_n(m_n->link_m, m_n->link_n,
11895                               m2_n2->link_m, m2_n2->link_n, !adjust)) {
11896                 if (adjust)
11897                         *m2_n2 = *m_n;
11898
11899                 return true;
11900         }
11901
11902         return false;
11903 }
11904
11905 static bool
11906 intel_compare_infoframe(const union hdmi_infoframe *a,
11907                         const union hdmi_infoframe *b)
11908 {
11909         return memcmp(a, b, sizeof(*a)) == 0;
11910 }
11911
11912 static void
11913 pipe_config_infoframe_err(struct drm_i915_private *dev_priv,
11914                           bool adjust, const char *name,
11915                           const union hdmi_infoframe *a,
11916                           const union hdmi_infoframe *b)
11917 {
11918         if (adjust) {
11919                 if ((drm_debug & DRM_UT_KMS) == 0)
11920                         return;
11921
11922                 drm_dbg(DRM_UT_KMS, "mismatch in %s infoframe", name);
11923                 drm_dbg(DRM_UT_KMS, "expected:");
11924                 hdmi_infoframe_log(KERN_DEBUG, dev_priv->drm.dev, a);
11925                 drm_dbg(DRM_UT_KMS, "found");
11926                 hdmi_infoframe_log(KERN_DEBUG, dev_priv->drm.dev, b);
11927         } else {
11928                 drm_err("mismatch in %s infoframe", name);
11929                 drm_err("expected:");
11930                 hdmi_infoframe_log(KERN_ERR, dev_priv->drm.dev, a);
11931                 drm_err("found");
11932                 hdmi_infoframe_log(KERN_ERR, dev_priv->drm.dev, b);
11933         }
11934 }
11935
11936 static void __printf(3, 4)
11937 pipe_config_err(bool adjust, const char *name, const char *format, ...)
11938 {
11939         struct va_format vaf;
11940         va_list args;
11941
11942         va_start(args, format);
11943         vaf.fmt = format;
11944         vaf.va = &args;
11945
11946         if (adjust)
11947                 drm_dbg(DRM_UT_KMS, "mismatch in %s %pV", name, &vaf);
11948         else
11949                 drm_err("mismatch in %s %pV", name, &vaf);
11950
11951         va_end(args);
11952 }
11953
11954 static bool fastboot_enabled(struct drm_i915_private *dev_priv)
11955 {
11956         if (i915_modparams.fastboot != -1)
11957                 return i915_modparams.fastboot;
11958
11959         /* Enable fastboot by default on Skylake and newer */
11960         if (INTEL_GEN(dev_priv) >= 9)
11961                 return true;
11962
11963         /* Enable fastboot by default on VLV and CHV */
11964         if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
11965                 return true;
11966
11967         /* Disabled by default on all others */
11968         return false;
11969 }
11970
11971 static bool
11972 intel_pipe_config_compare(struct drm_i915_private *dev_priv,
11973                           struct intel_crtc_state *current_config,
11974                           struct intel_crtc_state *pipe_config,
11975                           bool adjust)
11976 {
11977         bool ret = true;
11978         bool fixup_inherited = adjust &&
11979                 (current_config->base.mode.private_flags & I915_MODE_FLAG_INHERITED) &&
11980                 !(pipe_config->base.mode.private_flags & I915_MODE_FLAG_INHERITED);
11981
11982         if (fixup_inherited && !fastboot_enabled(dev_priv)) {
11983                 DRM_DEBUG_KMS("initial modeset and fastboot not set\n");
11984                 ret = false;
11985         }
11986
11987 #define PIPE_CONF_CHECK_X(name) do { \
11988         if (current_config->name != pipe_config->name) { \
11989                 pipe_config_err(adjust, __stringify(name), \
11990                           "(expected 0x%08x, found 0x%08x)\n", \
11991                           current_config->name, \
11992                           pipe_config->name); \
11993                 ret = false; \
11994         } \
11995 } while (0)
11996
11997 #define PIPE_CONF_CHECK_I(name) do { \
11998         if (current_config->name != pipe_config->name) { \
11999                 pipe_config_err(adjust, __stringify(name), \
12000                           "(expected %i, found %i)\n", \
12001                           current_config->name, \
12002                           pipe_config->name); \
12003                 ret = false; \
12004         } \
12005 } while (0)
12006
12007 #define PIPE_CONF_CHECK_BOOL(name) do { \
12008         if (current_config->name != pipe_config->name) { \
12009                 pipe_config_err(adjust, __stringify(name), \
12010                           "(expected %s, found %s)\n", \
12011                           yesno(current_config->name), \
12012                           yesno(pipe_config->name)); \
12013                 ret = false; \
12014         } \
12015 } while (0)
12016
12017 /*
12018  * Checks state where we only read out the enabling, but not the entire
12019  * state itself (like full infoframes or ELD for audio). These states
12020  * require a full modeset on bootup to fix up.
12021  */
12022 #define PIPE_CONF_CHECK_BOOL_INCOMPLETE(name) do { \
12023         if (!fixup_inherited || (!current_config->name && !pipe_config->name)) { \
12024                 PIPE_CONF_CHECK_BOOL(name); \
12025         } else { \
12026                 pipe_config_err(adjust, __stringify(name), \
12027                           "unable to verify whether state matches exactly, forcing modeset (expected %s, found %s)\n", \
12028                           yesno(current_config->name), \
12029                           yesno(pipe_config->name)); \
12030                 ret = false; \
12031         } \
12032 } while (0)
12033
12034 #define PIPE_CONF_CHECK_P(name) do { \
12035         if (current_config->name != pipe_config->name) { \
12036                 pipe_config_err(adjust, __stringify(name), \
12037                           "(expected %p, found %p)\n", \
12038                           current_config->name, \
12039                           pipe_config->name); \
12040                 ret = false; \
12041         } \
12042 } while (0)
12043
12044 #define PIPE_CONF_CHECK_M_N(name) do { \
12045         if (!intel_compare_link_m_n(&current_config->name, \
12046                                     &pipe_config->name,\
12047                                     adjust)) { \
12048                 pipe_config_err(adjust, __stringify(name), \
12049                           "(expected tu %i gmch %i/%i link %i/%i, " \
12050                           "found tu %i, gmch %i/%i link %i/%i)\n", \
12051                           current_config->name.tu, \
12052                           current_config->name.gmch_m, \
12053                           current_config->name.gmch_n, \
12054                           current_config->name.link_m, \
12055                           current_config->name.link_n, \
12056                           pipe_config->name.tu, \
12057                           pipe_config->name.gmch_m, \
12058                           pipe_config->name.gmch_n, \
12059                           pipe_config->name.link_m, \
12060                           pipe_config->name.link_n); \
12061                 ret = false; \
12062         } \
12063 } while (0)
12064
12065 /* This is required for BDW+ where there is only one set of registers for
12066  * switching between high and low RR.
12067  * This macro can be used whenever a comparison has to be made between one
12068  * hw state and multiple sw state variables.
12069  */
12070 #define PIPE_CONF_CHECK_M_N_ALT(name, alt_name) do { \
12071         if (!intel_compare_link_m_n(&current_config->name, \
12072                                     &pipe_config->name, adjust) && \
12073             !intel_compare_link_m_n(&current_config->alt_name, \
12074                                     &pipe_config->name, adjust)) { \
12075                 pipe_config_err(adjust, __stringify(name), \
12076                           "(expected tu %i gmch %i/%i link %i/%i, " \
12077                           "or tu %i gmch %i/%i link %i/%i, " \
12078                           "found tu %i, gmch %i/%i link %i/%i)\n", \
12079                           current_config->name.tu, \
12080                           current_config->name.gmch_m, \
12081                           current_config->name.gmch_n, \
12082                           current_config->name.link_m, \
12083                           current_config->name.link_n, \
12084                           current_config->alt_name.tu, \
12085                           current_config->alt_name.gmch_m, \
12086                           current_config->alt_name.gmch_n, \
12087                           current_config->alt_name.link_m, \
12088                           current_config->alt_name.link_n, \
12089                           pipe_config->name.tu, \
12090                           pipe_config->name.gmch_m, \
12091                           pipe_config->name.gmch_n, \
12092                           pipe_config->name.link_m, \
12093                           pipe_config->name.link_n); \
12094                 ret = false; \
12095         } \
12096 } while (0)
12097
12098 #define PIPE_CONF_CHECK_FLAGS(name, mask) do { \
12099         if ((current_config->name ^ pipe_config->name) & (mask)) { \
12100                 pipe_config_err(adjust, __stringify(name), \
12101                           "(%x) (expected %i, found %i)\n", \
12102                           (mask), \
12103                           current_config->name & (mask), \
12104                           pipe_config->name & (mask)); \
12105                 ret = false; \
12106         } \
12107 } while (0)
12108
12109 #define PIPE_CONF_CHECK_CLOCK_FUZZY(name) do { \
12110         if (!intel_fuzzy_clock_check(current_config->name, pipe_config->name)) { \
12111                 pipe_config_err(adjust, __stringify(name), \
12112                           "(expected %i, found %i)\n", \
12113                           current_config->name, \
12114                           pipe_config->name); \
12115                 ret = false; \
12116         } \
12117 } while (0)
12118
12119 #define PIPE_CONF_CHECK_INFOFRAME(name) do { \
12120         if (!intel_compare_infoframe(&current_config->infoframes.name, \
12121                                      &pipe_config->infoframes.name)) { \
12122                 pipe_config_infoframe_err(dev_priv, adjust, __stringify(name), \
12123                                           &current_config->infoframes.name, \
12124                                           &pipe_config->infoframes.name); \
12125                 ret = false; \
12126         } \
12127 } while (0)
12128
12129 #define PIPE_CONF_QUIRK(quirk) \
12130         ((current_config->quirks | pipe_config->quirks) & (quirk))
12131
12132         PIPE_CONF_CHECK_I(cpu_transcoder);
12133
12134         PIPE_CONF_CHECK_BOOL(has_pch_encoder);
12135         PIPE_CONF_CHECK_I(fdi_lanes);
12136         PIPE_CONF_CHECK_M_N(fdi_m_n);
12137
12138         PIPE_CONF_CHECK_I(lane_count);
12139         PIPE_CONF_CHECK_X(lane_lat_optim_mask);
12140
12141         if (INTEL_GEN(dev_priv) < 8) {
12142                 PIPE_CONF_CHECK_M_N(dp_m_n);
12143
12144                 if (current_config->has_drrs)
12145                         PIPE_CONF_CHECK_M_N(dp_m2_n2);
12146         } else
12147                 PIPE_CONF_CHECK_M_N_ALT(dp_m_n, dp_m2_n2);
12148
12149         PIPE_CONF_CHECK_X(output_types);
12150
12151         PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_hdisplay);
12152         PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_htotal);
12153         PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_hblank_start);
12154         PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_hblank_end);
12155         PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_hsync_start);
12156         PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_hsync_end);
12157
12158         PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_vdisplay);
12159         PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_vtotal);
12160         PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_vblank_start);
12161         PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_vblank_end);
12162         PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_vsync_start);
12163         PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_vsync_end);
12164
12165         PIPE_CONF_CHECK_I(pixel_multiplier);
12166         PIPE_CONF_CHECK_I(output_format);
12167         PIPE_CONF_CHECK_BOOL(has_hdmi_sink);
12168         if ((INTEL_GEN(dev_priv) < 8 && !IS_HASWELL(dev_priv)) ||
12169             IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
12170                 PIPE_CONF_CHECK_BOOL(limited_color_range);
12171
12172         PIPE_CONF_CHECK_BOOL(hdmi_scrambling);
12173         PIPE_CONF_CHECK_BOOL(hdmi_high_tmds_clock_ratio);
12174         PIPE_CONF_CHECK_BOOL_INCOMPLETE(has_infoframe);
12175
12176         PIPE_CONF_CHECK_BOOL_INCOMPLETE(has_audio);
12177
12178         PIPE_CONF_CHECK_FLAGS(base.adjusted_mode.flags,
12179                               DRM_MODE_FLAG_INTERLACE);
12180
12181         if (!PIPE_CONF_QUIRK(PIPE_CONFIG_QUIRK_MODE_SYNC_FLAGS)) {
12182                 PIPE_CONF_CHECK_FLAGS(base.adjusted_mode.flags,
12183                                       DRM_MODE_FLAG_PHSYNC);
12184                 PIPE_CONF_CHECK_FLAGS(base.adjusted_mode.flags,
12185                                       DRM_MODE_FLAG_NHSYNC);
12186                 PIPE_CONF_CHECK_FLAGS(base.adjusted_mode.flags,
12187                                       DRM_MODE_FLAG_PVSYNC);
12188                 PIPE_CONF_CHECK_FLAGS(base.adjusted_mode.flags,
12189                                       DRM_MODE_FLAG_NVSYNC);
12190         }
12191
12192         PIPE_CONF_CHECK_X(gmch_pfit.control);
12193         /* pfit ratios are autocomputed by the hw on gen4+ */
12194         if (INTEL_GEN(dev_priv) < 4)
12195                 PIPE_CONF_CHECK_X(gmch_pfit.pgm_ratios);
12196         PIPE_CONF_CHECK_X(gmch_pfit.lvds_border_bits);
12197
12198         /*
12199          * Changing the EDP transcoder input mux
12200          * (A_ONOFF vs. A_ON) requires a full modeset.
12201          */
12202         PIPE_CONF_CHECK_BOOL(pch_pfit.force_thru);
12203
12204         if (!adjust) {
12205                 PIPE_CONF_CHECK_I(pipe_src_w);
12206                 PIPE_CONF_CHECK_I(pipe_src_h);
12207
12208                 PIPE_CONF_CHECK_BOOL(pch_pfit.enabled);
12209                 if (current_config->pch_pfit.enabled) {
12210                         PIPE_CONF_CHECK_X(pch_pfit.pos);
12211                         PIPE_CONF_CHECK_X(pch_pfit.size);
12212                 }
12213
12214                 PIPE_CONF_CHECK_I(scaler_state.scaler_id);
12215                 PIPE_CONF_CHECK_CLOCK_FUZZY(pixel_rate);
12216
12217                 PIPE_CONF_CHECK_X(gamma_mode);
12218                 if (IS_CHERRYVIEW(dev_priv))
12219                         PIPE_CONF_CHECK_X(cgm_mode);
12220                 else
12221                         PIPE_CONF_CHECK_X(csc_mode);
12222                 PIPE_CONF_CHECK_BOOL(gamma_enable);
12223                 PIPE_CONF_CHECK_BOOL(csc_enable);
12224         }
12225
12226         PIPE_CONF_CHECK_BOOL(double_wide);
12227
12228         PIPE_CONF_CHECK_P(shared_dpll);
12229         PIPE_CONF_CHECK_X(dpll_hw_state.dpll);
12230         PIPE_CONF_CHECK_X(dpll_hw_state.dpll_md);
12231         PIPE_CONF_CHECK_X(dpll_hw_state.fp0);
12232         PIPE_CONF_CHECK_X(dpll_hw_state.fp1);
12233         PIPE_CONF_CHECK_X(dpll_hw_state.wrpll);
12234         PIPE_CONF_CHECK_X(dpll_hw_state.spll);
12235         PIPE_CONF_CHECK_X(dpll_hw_state.ctrl1);
12236         PIPE_CONF_CHECK_X(dpll_hw_state.cfgcr1);
12237         PIPE_CONF_CHECK_X(dpll_hw_state.cfgcr2);
12238         PIPE_CONF_CHECK_X(dpll_hw_state.cfgcr0);
12239         PIPE_CONF_CHECK_X(dpll_hw_state.ebb0);
12240         PIPE_CONF_CHECK_X(dpll_hw_state.ebb4);
12241         PIPE_CONF_CHECK_X(dpll_hw_state.pll0);
12242         PIPE_CONF_CHECK_X(dpll_hw_state.pll1);
12243         PIPE_CONF_CHECK_X(dpll_hw_state.pll2);
12244         PIPE_CONF_CHECK_X(dpll_hw_state.pll3);
12245         PIPE_CONF_CHECK_X(dpll_hw_state.pll6);
12246         PIPE_CONF_CHECK_X(dpll_hw_state.pll8);
12247         PIPE_CONF_CHECK_X(dpll_hw_state.pll9);
12248         PIPE_CONF_CHECK_X(dpll_hw_state.pll10);
12249         PIPE_CONF_CHECK_X(dpll_hw_state.pcsdw12);
12250         PIPE_CONF_CHECK_X(dpll_hw_state.mg_refclkin_ctl);
12251         PIPE_CONF_CHECK_X(dpll_hw_state.mg_clktop2_coreclkctl1);
12252         PIPE_CONF_CHECK_X(dpll_hw_state.mg_clktop2_hsclkctl);
12253         PIPE_CONF_CHECK_X(dpll_hw_state.mg_pll_div0);
12254         PIPE_CONF_CHECK_X(dpll_hw_state.mg_pll_div1);
12255         PIPE_CONF_CHECK_X(dpll_hw_state.mg_pll_lf);
12256         PIPE_CONF_CHECK_X(dpll_hw_state.mg_pll_frac_lock);
12257         PIPE_CONF_CHECK_X(dpll_hw_state.mg_pll_ssc);
12258         PIPE_CONF_CHECK_X(dpll_hw_state.mg_pll_bias);
12259         PIPE_CONF_CHECK_X(dpll_hw_state.mg_pll_tdc_coldst_bias);
12260
12261         PIPE_CONF_CHECK_X(dsi_pll.ctrl);
12262         PIPE_CONF_CHECK_X(dsi_pll.div);
12263
12264         if (IS_G4X(dev_priv) || INTEL_GEN(dev_priv) >= 5)
12265                 PIPE_CONF_CHECK_I(pipe_bpp);
12266
12267         PIPE_CONF_CHECK_CLOCK_FUZZY(base.adjusted_mode.crtc_clock);
12268         PIPE_CONF_CHECK_CLOCK_FUZZY(port_clock);
12269
12270         PIPE_CONF_CHECK_I(min_voltage_level);
12271
12272         PIPE_CONF_CHECK_X(infoframes.enable);
12273         PIPE_CONF_CHECK_X(infoframes.gcp);
12274         PIPE_CONF_CHECK_INFOFRAME(avi);
12275         PIPE_CONF_CHECK_INFOFRAME(spd);
12276         PIPE_CONF_CHECK_INFOFRAME(hdmi);
12277
12278 #undef PIPE_CONF_CHECK_X
12279 #undef PIPE_CONF_CHECK_I
12280 #undef PIPE_CONF_CHECK_BOOL
12281 #undef PIPE_CONF_CHECK_BOOL_INCOMPLETE
12282 #undef PIPE_CONF_CHECK_P
12283 #undef PIPE_CONF_CHECK_FLAGS
12284 #undef PIPE_CONF_CHECK_CLOCK_FUZZY
12285 #undef PIPE_CONF_QUIRK
12286
12287         return ret;
12288 }
12289
12290 static void intel_pipe_config_sanity_check(struct drm_i915_private *dev_priv,
12291                                            const struct intel_crtc_state *pipe_config)
12292 {
12293         if (pipe_config->has_pch_encoder) {
12294                 int fdi_dotclock = intel_dotclock_calculate(intel_fdi_link_freq(dev_priv, pipe_config),
12295                                                             &pipe_config->fdi_m_n);
12296                 int dotclock = pipe_config->base.adjusted_mode.crtc_clock;
12297
12298                 /*
12299                  * FDI already provided one idea for the dotclock.
12300                  * Yell if the encoder disagrees.
12301                  */
12302                 WARN(!intel_fuzzy_clock_check(fdi_dotclock, dotclock),
12303                      "FDI dotclock and encoder dotclock mismatch, fdi: %i, encoder: %i\n",
12304                      fdi_dotclock, dotclock);
12305         }
12306 }
12307
12308 static void verify_wm_state(struct drm_crtc *crtc,
12309                             struct drm_crtc_state *new_state)
12310 {
12311         struct drm_i915_private *dev_priv = to_i915(crtc->dev);
12312         struct skl_hw_state {
12313                 struct skl_ddb_entry ddb_y[I915_MAX_PLANES];
12314                 struct skl_ddb_entry ddb_uv[I915_MAX_PLANES];
12315                 struct skl_ddb_allocation ddb;
12316                 struct skl_pipe_wm wm;
12317         } *hw;
12318         struct skl_ddb_allocation *sw_ddb;
12319         struct skl_pipe_wm *sw_wm;
12320         struct skl_ddb_entry *hw_ddb_entry, *sw_ddb_entry;
12321         struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
12322         const enum pipe pipe = intel_crtc->pipe;
12323         int plane, level, max_level = ilk_wm_max_level(dev_priv);
12324
12325         if (INTEL_GEN(dev_priv) < 9 || !new_state->active)
12326                 return;
12327
12328         hw = kzalloc(sizeof(*hw), GFP_KERNEL);
12329         if (!hw)
12330                 return;
12331
12332         skl_pipe_wm_get_hw_state(intel_crtc, &hw->wm);
12333         sw_wm = &to_intel_crtc_state(new_state)->wm.skl.optimal;
12334
12335         skl_pipe_ddb_get_hw_state(intel_crtc, hw->ddb_y, hw->ddb_uv);
12336
12337         skl_ddb_get_hw_state(dev_priv, &hw->ddb);
12338         sw_ddb = &dev_priv->wm.skl_hw.ddb;
12339
12340         if (INTEL_GEN(dev_priv) >= 11 &&
12341             hw->ddb.enabled_slices != sw_ddb->enabled_slices)
12342                 DRM_ERROR("mismatch in DBUF Slices (expected %u, got %u)\n",
12343                           sw_ddb->enabled_slices,
12344                           hw->ddb.enabled_slices);
12345
12346         /* planes */
12347         for_each_universal_plane(dev_priv, pipe, plane) {
12348                 struct skl_plane_wm *hw_plane_wm, *sw_plane_wm;
12349
12350                 hw_plane_wm = &hw->wm.planes[plane];
12351                 sw_plane_wm = &sw_wm->planes[plane];
12352
12353                 /* Watermarks */
12354                 for (level = 0; level <= max_level; level++) {
12355                         if (skl_wm_level_equals(&hw_plane_wm->wm[level],
12356                                                 &sw_plane_wm->wm[level]))
12357                                 continue;
12358
12359                         DRM_ERROR("mismatch in WM pipe %c plane %d level %d (expected e=%d b=%u l=%u, got e=%d b=%u l=%u)\n",
12360                                   pipe_name(pipe), plane + 1, level,
12361                                   sw_plane_wm->wm[level].plane_en,
12362                                   sw_plane_wm->wm[level].plane_res_b,
12363                                   sw_plane_wm->wm[level].plane_res_l,
12364                                   hw_plane_wm->wm[level].plane_en,
12365                                   hw_plane_wm->wm[level].plane_res_b,
12366                                   hw_plane_wm->wm[level].plane_res_l);
12367                 }
12368
12369                 if (!skl_wm_level_equals(&hw_plane_wm->trans_wm,
12370                                          &sw_plane_wm->trans_wm)) {
12371                         DRM_ERROR("mismatch in trans WM pipe %c plane %d (expected e=%d b=%u l=%u, got e=%d b=%u l=%u)\n",
12372                                   pipe_name(pipe), plane + 1,
12373                                   sw_plane_wm->trans_wm.plane_en,
12374                                   sw_plane_wm->trans_wm.plane_res_b,
12375                                   sw_plane_wm->trans_wm.plane_res_l,
12376                                   hw_plane_wm->trans_wm.plane_en,
12377                                   hw_plane_wm->trans_wm.plane_res_b,
12378                                   hw_plane_wm->trans_wm.plane_res_l);
12379                 }
12380
12381                 /* DDB */
12382                 hw_ddb_entry = &hw->ddb_y[plane];
12383                 sw_ddb_entry = &to_intel_crtc_state(new_state)->wm.skl.plane_ddb_y[plane];
12384
12385                 if (!skl_ddb_entry_equal(hw_ddb_entry, sw_ddb_entry)) {
12386                         DRM_ERROR("mismatch in DDB state pipe %c plane %d (expected (%u,%u), found (%u,%u))\n",
12387                                   pipe_name(pipe), plane + 1,
12388                                   sw_ddb_entry->start, sw_ddb_entry->end,
12389                                   hw_ddb_entry->start, hw_ddb_entry->end);
12390                 }
12391         }
12392
12393         /*
12394          * cursor
12395          * If the cursor plane isn't active, we may not have updated it's ddb
12396          * allocation. In that case since the ddb allocation will be updated
12397          * once the plane becomes visible, we can skip this check
12398          */
12399         if (1) {
12400                 struct skl_plane_wm *hw_plane_wm, *sw_plane_wm;
12401
12402                 hw_plane_wm = &hw->wm.planes[PLANE_CURSOR];
12403                 sw_plane_wm = &sw_wm->planes[PLANE_CURSOR];
12404
12405                 /* Watermarks */
12406                 for (level = 0; level <= max_level; level++) {
12407                         if (skl_wm_level_equals(&hw_plane_wm->wm[level],
12408                                                 &sw_plane_wm->wm[level]))
12409                                 continue;
12410
12411                         DRM_ERROR("mismatch in WM pipe %c cursor level %d (expected e=%d b=%u l=%u, got e=%d b=%u l=%u)\n",
12412                                   pipe_name(pipe), level,
12413                                   sw_plane_wm->wm[level].plane_en,
12414                                   sw_plane_wm->wm[level].plane_res_b,
12415                                   sw_plane_wm->wm[level].plane_res_l,
12416                                   hw_plane_wm->wm[level].plane_en,
12417                                   hw_plane_wm->wm[level].plane_res_b,
12418                                   hw_plane_wm->wm[level].plane_res_l);
12419                 }
12420
12421                 if (!skl_wm_level_equals(&hw_plane_wm->trans_wm,
12422                                          &sw_plane_wm->trans_wm)) {
12423                         DRM_ERROR("mismatch in trans WM pipe %c cursor (expected e=%d b=%u l=%u, got e=%d b=%u l=%u)\n",
12424                                   pipe_name(pipe),
12425                                   sw_plane_wm->trans_wm.plane_en,
12426                                   sw_plane_wm->trans_wm.plane_res_b,
12427                                   sw_plane_wm->trans_wm.plane_res_l,
12428                                   hw_plane_wm->trans_wm.plane_en,
12429                                   hw_plane_wm->trans_wm.plane_res_b,
12430                                   hw_plane_wm->trans_wm.plane_res_l);
12431                 }
12432
12433                 /* DDB */
12434                 hw_ddb_entry = &hw->ddb_y[PLANE_CURSOR];
12435                 sw_ddb_entry = &to_intel_crtc_state(new_state)->wm.skl.plane_ddb_y[PLANE_CURSOR];
12436
12437                 if (!skl_ddb_entry_equal(hw_ddb_entry, sw_ddb_entry)) {
12438                         DRM_ERROR("mismatch in DDB state pipe %c cursor (expected (%u,%u), found (%u,%u))\n",
12439                                   pipe_name(pipe),
12440                                   sw_ddb_entry->start, sw_ddb_entry->end,
12441                                   hw_ddb_entry->start, hw_ddb_entry->end);
12442                 }
12443         }
12444
12445         kfree(hw);
12446 }
12447
12448 static void
12449 verify_connector_state(struct drm_device *dev,
12450                        struct drm_atomic_state *state,
12451                        struct drm_crtc *crtc)
12452 {
12453         struct drm_connector *connector;
12454         struct drm_connector_state *new_conn_state;
12455         int i;
12456
12457         for_each_new_connector_in_state(state, connector, new_conn_state, i) {
12458                 struct drm_encoder *encoder = connector->encoder;
12459                 struct drm_crtc_state *crtc_state = NULL;
12460
12461                 if (new_conn_state->crtc != crtc)
12462                         continue;
12463
12464                 if (crtc)
12465                         crtc_state = drm_atomic_get_new_crtc_state(state, new_conn_state->crtc);
12466
12467                 intel_connector_verify_state(crtc_state, new_conn_state);
12468
12469                 I915_STATE_WARN(new_conn_state->best_encoder != encoder,
12470                      "connector's atomic encoder doesn't match legacy encoder\n");
12471         }
12472 }
12473
12474 static void
12475 verify_encoder_state(struct drm_device *dev, struct drm_atomic_state *state)
12476 {
12477         struct intel_encoder *encoder;
12478         struct drm_connector *connector;
12479         struct drm_connector_state *old_conn_state, *new_conn_state;
12480         int i;
12481
12482         for_each_intel_encoder(dev, encoder) {
12483                 bool enabled = false, found = false;
12484                 enum pipe pipe;
12485
12486                 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n",
12487                               encoder->base.base.id,
12488                               encoder->base.name);
12489
12490                 for_each_oldnew_connector_in_state(state, connector, old_conn_state,
12491                                                    new_conn_state, i) {
12492                         if (old_conn_state->best_encoder == &encoder->base)
12493                                 found = true;
12494
12495                         if (new_conn_state->best_encoder != &encoder->base)
12496                                 continue;
12497                         found = enabled = true;
12498
12499                         I915_STATE_WARN(new_conn_state->crtc !=
12500                                         encoder->base.crtc,
12501                              "connector's crtc doesn't match encoder crtc\n");
12502                 }
12503
12504                 if (!found)
12505                         continue;
12506
12507                 I915_STATE_WARN(!!encoder->base.crtc != enabled,
12508                      "encoder's enabled state mismatch "
12509                      "(expected %i, found %i)\n",
12510                      !!encoder->base.crtc, enabled);
12511
12512                 if (!encoder->base.crtc) {
12513                         bool active;
12514
12515                         active = encoder->get_hw_state(encoder, &pipe);
12516                         I915_STATE_WARN(active,
12517                              "encoder detached but still enabled on pipe %c.\n",
12518                              pipe_name(pipe));
12519                 }
12520         }
12521 }
12522
12523 static void
12524 verify_crtc_state(struct drm_crtc *crtc,
12525                   struct drm_crtc_state *old_crtc_state,
12526                   struct drm_crtc_state *new_crtc_state)
12527 {
12528         struct drm_device *dev = crtc->dev;
12529         struct drm_i915_private *dev_priv = to_i915(dev);
12530         struct intel_encoder *encoder;
12531         struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
12532         struct intel_crtc_state *pipe_config, *sw_config;
12533         struct drm_atomic_state *old_state;
12534         bool active;
12535
12536         old_state = old_crtc_state->state;
12537         __drm_atomic_helper_crtc_destroy_state(old_crtc_state);
12538         pipe_config = to_intel_crtc_state(old_crtc_state);
12539         memset(pipe_config, 0, sizeof(*pipe_config));
12540         pipe_config->base.crtc = crtc;
12541         pipe_config->base.state = old_state;
12542
12543         DRM_DEBUG_KMS("[CRTC:%d:%s]\n", crtc->base.id, crtc->name);
12544
12545         active = dev_priv->display.get_pipe_config(intel_crtc, pipe_config);
12546
12547         /* we keep both pipes enabled on 830 */
12548         if (IS_I830(dev_priv))
12549                 active = new_crtc_state->active;
12550
12551         I915_STATE_WARN(new_crtc_state->active != active,
12552              "crtc active state doesn't match with hw state "
12553              "(expected %i, found %i)\n", new_crtc_state->active, active);
12554
12555         I915_STATE_WARN(intel_crtc->active != new_crtc_state->active,
12556              "transitional active state does not match atomic hw state "
12557              "(expected %i, found %i)\n", new_crtc_state->active, intel_crtc->active);
12558
12559         for_each_encoder_on_crtc(dev, crtc, encoder) {
12560                 enum pipe pipe;
12561
12562                 active = encoder->get_hw_state(encoder, &pipe);
12563                 I915_STATE_WARN(active != new_crtc_state->active,
12564                         "[ENCODER:%i] active %i with crtc active %i\n",
12565                         encoder->base.base.id, active, new_crtc_state->active);
12566
12567                 I915_STATE_WARN(active && intel_crtc->pipe != pipe,
12568                                 "Encoder connected to wrong pipe %c\n",
12569                                 pipe_name(pipe));
12570
12571                 if (active)
12572                         encoder->get_config(encoder, pipe_config);
12573         }
12574
12575         intel_crtc_compute_pixel_rate(pipe_config);
12576
12577         if (!new_crtc_state->active)
12578                 return;
12579
12580         intel_pipe_config_sanity_check(dev_priv, pipe_config);
12581
12582         sw_config = to_intel_crtc_state(new_crtc_state);
12583         if (!intel_pipe_config_compare(dev_priv, sw_config,
12584                                        pipe_config, false)) {
12585                 I915_STATE_WARN(1, "pipe state doesn't match!\n");
12586                 intel_dump_pipe_config(intel_crtc, pipe_config,
12587                                        "[hw state]");
12588                 intel_dump_pipe_config(intel_crtc, sw_config,
12589                                        "[sw state]");
12590         }
12591 }
12592
12593 static void
12594 intel_verify_planes(struct intel_atomic_state *state)
12595 {
12596         struct intel_plane *plane;
12597         const struct intel_plane_state *plane_state;
12598         int i;
12599
12600         for_each_new_intel_plane_in_state(state, plane,
12601                                           plane_state, i)
12602                 assert_plane(plane, plane_state->slave ||
12603                              plane_state->base.visible);
12604 }
12605
12606 static void
12607 verify_single_dpll_state(struct drm_i915_private *dev_priv,
12608                          struct intel_shared_dpll *pll,
12609                          struct drm_crtc *crtc,
12610                          struct drm_crtc_state *new_state)
12611 {
12612         struct intel_dpll_hw_state dpll_hw_state;
12613         unsigned int crtc_mask;
12614         bool active;
12615
12616         memset(&dpll_hw_state, 0, sizeof(dpll_hw_state));
12617
12618         DRM_DEBUG_KMS("%s\n", pll->info->name);
12619
12620         active = pll->info->funcs->get_hw_state(dev_priv, pll, &dpll_hw_state);
12621
12622         if (!(pll->info->flags & INTEL_DPLL_ALWAYS_ON)) {
12623                 I915_STATE_WARN(!pll->on && pll->active_mask,
12624                      "pll in active use but not on in sw tracking\n");
12625                 I915_STATE_WARN(pll->on && !pll->active_mask,
12626                      "pll is on but not used by any active crtc\n");
12627                 I915_STATE_WARN(pll->on != active,
12628                      "pll on state mismatch (expected %i, found %i)\n",
12629                      pll->on, active);
12630         }
12631
12632         if (!crtc) {
12633                 I915_STATE_WARN(pll->active_mask & ~pll->state.crtc_mask,
12634                                 "more active pll users than references: %x vs %x\n",
12635                                 pll->active_mask, pll->state.crtc_mask);
12636
12637                 return;
12638         }
12639
12640         crtc_mask = drm_crtc_mask(crtc);
12641
12642         if (new_state->active)
12643                 I915_STATE_WARN(!(pll->active_mask & crtc_mask),
12644                                 "pll active mismatch (expected pipe %c in active mask 0x%02x)\n",
12645                                 pipe_name(drm_crtc_index(crtc)), pll->active_mask);
12646         else
12647                 I915_STATE_WARN(pll->active_mask & crtc_mask,
12648                                 "pll active mismatch (didn't expect pipe %c in active mask 0x%02x)\n",
12649                                 pipe_name(drm_crtc_index(crtc)), pll->active_mask);
12650
12651         I915_STATE_WARN(!(pll->state.crtc_mask & crtc_mask),
12652                         "pll enabled crtcs mismatch (expected 0x%x in 0x%02x)\n",
12653                         crtc_mask, pll->state.crtc_mask);
12654
12655         I915_STATE_WARN(pll->on && memcmp(&pll->state.hw_state,
12656                                           &dpll_hw_state,
12657                                           sizeof(dpll_hw_state)),
12658                         "pll hw state mismatch\n");
12659 }
12660
12661 static void
12662 verify_shared_dpll_state(struct drm_device *dev, struct drm_crtc *crtc,
12663                          struct drm_crtc_state *old_crtc_state,
12664                          struct drm_crtc_state *new_crtc_state)
12665 {
12666         struct drm_i915_private *dev_priv = to_i915(dev);
12667         struct intel_crtc_state *old_state = to_intel_crtc_state(old_crtc_state);
12668         struct intel_crtc_state *new_state = to_intel_crtc_state(new_crtc_state);
12669
12670         if (new_state->shared_dpll)
12671                 verify_single_dpll_state(dev_priv, new_state->shared_dpll, crtc, new_crtc_state);
12672
12673         if (old_state->shared_dpll &&
12674             old_state->shared_dpll != new_state->shared_dpll) {
12675                 unsigned int crtc_mask = drm_crtc_mask(crtc);
12676                 struct intel_shared_dpll *pll = old_state->shared_dpll;
12677
12678                 I915_STATE_WARN(pll->active_mask & crtc_mask,
12679                                 "pll active mismatch (didn't expect pipe %c in active mask)\n",
12680                                 pipe_name(drm_crtc_index(crtc)));
12681                 I915_STATE_WARN(pll->state.crtc_mask & crtc_mask,
12682                                 "pll enabled crtcs mismatch (found %x in enabled mask)\n",
12683                                 pipe_name(drm_crtc_index(crtc)));
12684         }
12685 }
12686
12687 static void
12688 intel_modeset_verify_crtc(struct drm_crtc *crtc,
12689                           struct drm_atomic_state *state,
12690                           struct drm_crtc_state *old_state,
12691                           struct drm_crtc_state *new_state)
12692 {
12693         if (!needs_modeset(new_state) &&
12694             !to_intel_crtc_state(new_state)->update_pipe)
12695                 return;
12696
12697         verify_wm_state(crtc, new_state);
12698         verify_connector_state(crtc->dev, state, crtc);
12699         verify_crtc_state(crtc, old_state, new_state);
12700         verify_shared_dpll_state(crtc->dev, crtc, old_state, new_state);
12701 }
12702
12703 static void
12704 verify_disabled_dpll_state(struct drm_device *dev)
12705 {
12706         struct drm_i915_private *dev_priv = to_i915(dev);
12707         int i;
12708
12709         for (i = 0; i < dev_priv->num_shared_dpll; i++)
12710                 verify_single_dpll_state(dev_priv, &dev_priv->shared_dplls[i], NULL, NULL);
12711 }
12712
12713 static void
12714 intel_modeset_verify_disabled(struct drm_device *dev,
12715                               struct drm_atomic_state *state)
12716 {
12717         verify_encoder_state(dev, state);
12718         verify_connector_state(dev, state, NULL);
12719         verify_disabled_dpll_state(dev);
12720 }
12721
12722 static void update_scanline_offset(const struct intel_crtc_state *crtc_state)
12723 {
12724         struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
12725         struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
12726
12727         /*
12728          * The scanline counter increments at the leading edge of hsync.
12729          *
12730          * On most platforms it starts counting from vtotal-1 on the
12731          * first active line. That means the scanline counter value is
12732          * always one less than what we would expect. Ie. just after
12733          * start of vblank, which also occurs at start of hsync (on the
12734          * last active line), the scanline counter will read vblank_start-1.
12735          *
12736          * On gen2 the scanline counter starts counting from 1 instead
12737          * of vtotal-1, so we have to subtract one (or rather add vtotal-1
12738          * to keep the value positive), instead of adding one.
12739          *
12740          * On HSW+ the behaviour of the scanline counter depends on the output
12741          * type. For DP ports it behaves like most other platforms, but on HDMI
12742          * there's an extra 1 line difference. So we need to add two instead of
12743          * one to the value.
12744          *
12745          * On VLV/CHV DSI the scanline counter would appear to increment
12746          * approx. 1/3 of a scanline before start of vblank. Unfortunately
12747          * that means we can't tell whether we're in vblank or not while
12748          * we're on that particular line. We must still set scanline_offset
12749          * to 1 so that the vblank timestamps come out correct when we query
12750          * the scanline counter from within the vblank interrupt handler.
12751          * However if queried just before the start of vblank we'll get an
12752          * answer that's slightly in the future.
12753          */
12754         if (IS_GEN(dev_priv, 2)) {
12755                 const struct drm_display_mode *adjusted_mode = &crtc_state->base.adjusted_mode;
12756                 int vtotal;
12757
12758                 vtotal = adjusted_mode->crtc_vtotal;
12759                 if (adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE)
12760                         vtotal /= 2;
12761
12762                 crtc->scanline_offset = vtotal - 1;
12763         } else if (HAS_DDI(dev_priv) &&
12764                    intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI)) {
12765                 crtc->scanline_offset = 2;
12766         } else
12767                 crtc->scanline_offset = 1;
12768 }
12769
12770 static void intel_modeset_clear_plls(struct drm_atomic_state *state)
12771 {
12772         struct drm_device *dev = state->dev;
12773         struct drm_i915_private *dev_priv = to_i915(dev);
12774         struct drm_crtc *crtc;
12775         struct drm_crtc_state *old_crtc_state, *new_crtc_state;
12776         int i;
12777
12778         if (!dev_priv->display.crtc_compute_clock)
12779                 return;
12780
12781         for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) {
12782                 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
12783                 struct intel_shared_dpll *old_dpll =
12784                         to_intel_crtc_state(old_crtc_state)->shared_dpll;
12785
12786                 if (!needs_modeset(new_crtc_state))
12787                         continue;
12788
12789                 to_intel_crtc_state(new_crtc_state)->shared_dpll = NULL;
12790
12791                 if (!old_dpll)
12792                         continue;
12793
12794                 intel_release_shared_dpll(old_dpll, intel_crtc, state);
12795         }
12796 }
12797
12798 /*
12799  * This implements the workaround described in the "notes" section of the mode
12800  * set sequence documentation. When going from no pipes or single pipe to
12801  * multiple pipes, and planes are enabled after the pipe, we need to wait at
12802  * least 2 vblanks on the first pipe before enabling planes on the second pipe.
12803  */
12804 static int haswell_mode_set_planes_workaround(struct drm_atomic_state *state)
12805 {
12806         struct drm_crtc_state *crtc_state;
12807         struct intel_crtc *intel_crtc;
12808         struct drm_crtc *crtc;
12809         struct intel_crtc_state *first_crtc_state = NULL;
12810         struct intel_crtc_state *other_crtc_state = NULL;
12811         enum pipe first_pipe = INVALID_PIPE, enabled_pipe = INVALID_PIPE;
12812         int i;
12813
12814         /* look at all crtc's that are going to be enabled in during modeset */
12815         for_each_new_crtc_in_state(state, crtc, crtc_state, i) {
12816                 intel_crtc = to_intel_crtc(crtc);
12817
12818                 if (!crtc_state->active || !needs_modeset(crtc_state))
12819                         continue;
12820
12821                 if (first_crtc_state) {
12822                         other_crtc_state = to_intel_crtc_state(crtc_state);
12823                         break;
12824                 } else {
12825                         first_crtc_state = to_intel_crtc_state(crtc_state);
12826                         first_pipe = intel_crtc->pipe;
12827                 }
12828         }
12829
12830         /* No workaround needed? */
12831         if (!first_crtc_state)
12832                 return 0;
12833
12834         /* w/a possibly needed, check how many crtc's are already enabled. */
12835         for_each_intel_crtc(state->dev, intel_crtc) {
12836                 struct intel_crtc_state *pipe_config;
12837
12838                 pipe_config = intel_atomic_get_crtc_state(state, intel_crtc);
12839                 if (IS_ERR(pipe_config))
12840                         return PTR_ERR(pipe_config);
12841
12842                 pipe_config->hsw_workaround_pipe = INVALID_PIPE;
12843
12844                 if (!pipe_config->base.active ||
12845                     needs_modeset(&pipe_config->base))
12846                         continue;
12847
12848                 /* 2 or more enabled crtcs means no need for w/a */
12849                 if (enabled_pipe != INVALID_PIPE)
12850                         return 0;
12851
12852                 enabled_pipe = intel_crtc->pipe;
12853         }
12854
12855         if (enabled_pipe != INVALID_PIPE)
12856                 first_crtc_state->hsw_workaround_pipe = enabled_pipe;
12857         else if (other_crtc_state)
12858                 other_crtc_state->hsw_workaround_pipe = first_pipe;
12859
12860         return 0;
12861 }
12862
12863 static int intel_lock_all_pipes(struct drm_atomic_state *state)
12864 {
12865         struct drm_crtc *crtc;
12866
12867         /* Add all pipes to the state */
12868         for_each_crtc(state->dev, crtc) {
12869                 struct drm_crtc_state *crtc_state;
12870
12871                 crtc_state = drm_atomic_get_crtc_state(state, crtc);
12872                 if (IS_ERR(crtc_state))
12873                         return PTR_ERR(crtc_state);
12874         }
12875
12876         return 0;
12877 }
12878
12879 static int intel_modeset_all_pipes(struct drm_atomic_state *state)
12880 {
12881         struct drm_crtc *crtc;
12882
12883         /*
12884          * Add all pipes to the state, and force
12885          * a modeset on all the active ones.
12886          */
12887         for_each_crtc(state->dev, crtc) {
12888                 struct drm_crtc_state *crtc_state;
12889                 int ret;
12890
12891                 crtc_state = drm_atomic_get_crtc_state(state, crtc);
12892                 if (IS_ERR(crtc_state))
12893                         return PTR_ERR(crtc_state);
12894
12895                 if (!crtc_state->active || needs_modeset(crtc_state))
12896                         continue;
12897
12898                 crtc_state->mode_changed = true;
12899
12900                 ret = drm_atomic_add_affected_connectors(state, crtc);
12901                 if (ret)
12902                         return ret;
12903
12904                 ret = drm_atomic_add_affected_planes(state, crtc);
12905                 if (ret)
12906                         return ret;
12907         }
12908
12909         return 0;
12910 }
12911
12912 static int intel_modeset_checks(struct drm_atomic_state *state)
12913 {
12914         struct intel_atomic_state *intel_state = to_intel_atomic_state(state);
12915         struct drm_i915_private *dev_priv = to_i915(state->dev);
12916         struct drm_crtc *crtc;
12917         struct drm_crtc_state *old_crtc_state, *new_crtc_state;
12918         int ret = 0, i;
12919
12920         if (!check_digital_port_conflicts(state)) {
12921                 DRM_DEBUG_KMS("rejecting conflicting digital port configuration\n");
12922                 return -EINVAL;
12923         }
12924
12925         /* keep the current setting */
12926         if (!intel_state->cdclk.force_min_cdclk_changed)
12927                 intel_state->cdclk.force_min_cdclk =
12928                         dev_priv->cdclk.force_min_cdclk;
12929
12930         intel_state->modeset = true;
12931         intel_state->active_crtcs = dev_priv->active_crtcs;
12932         intel_state->cdclk.logical = dev_priv->cdclk.logical;
12933         intel_state->cdclk.actual = dev_priv->cdclk.actual;
12934         intel_state->cdclk.pipe = INVALID_PIPE;
12935
12936         for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) {
12937                 if (new_crtc_state->active)
12938                         intel_state->active_crtcs |= 1 << i;
12939                 else
12940                         intel_state->active_crtcs &= ~(1 << i);
12941
12942                 if (old_crtc_state->active != new_crtc_state->active)
12943                         intel_state->active_pipe_changes |= drm_crtc_mask(crtc);
12944         }
12945
12946         /*
12947          * See if the config requires any additional preparation, e.g.
12948          * to adjust global state with pipes off.  We need to do this
12949          * here so we can get the modeset_pipe updated config for the new
12950          * mode set on this crtc.  For other crtcs we need to use the
12951          * adjusted_mode bits in the crtc directly.
12952          */
12953         if (dev_priv->display.modeset_calc_cdclk) {
12954                 enum pipe pipe;
12955
12956                 ret = dev_priv->display.modeset_calc_cdclk(state);
12957                 if (ret < 0)
12958                         return ret;
12959
12960                 /*
12961                  * Writes to dev_priv->cdclk.logical must protected by
12962                  * holding all the crtc locks, even if we don't end up
12963                  * touching the hardware
12964                  */
12965                 if (intel_cdclk_changed(&dev_priv->cdclk.logical,
12966                                         &intel_state->cdclk.logical)) {
12967                         ret = intel_lock_all_pipes(state);
12968                         if (ret < 0)
12969                                 return ret;
12970                 }
12971
12972                 if (is_power_of_2(intel_state->active_crtcs)) {
12973                         struct drm_crtc *crtc;
12974                         struct drm_crtc_state *crtc_state;
12975
12976                         pipe = ilog2(intel_state->active_crtcs);
12977                         crtc = &intel_get_crtc_for_pipe(dev_priv, pipe)->base;
12978                         crtc_state = drm_atomic_get_new_crtc_state(state, crtc);
12979                         if (crtc_state && needs_modeset(crtc_state))
12980                                 pipe = INVALID_PIPE;
12981                 } else {
12982                         pipe = INVALID_PIPE;
12983                 }
12984
12985                 /* All pipes must be switched off while we change the cdclk. */
12986                 if (pipe != INVALID_PIPE &&
12987                     intel_cdclk_needs_cd2x_update(dev_priv,
12988                                                   &dev_priv->cdclk.actual,
12989                                                   &intel_state->cdclk.actual)) {
12990                         ret = intel_lock_all_pipes(state);
12991                         if (ret < 0)
12992                                 return ret;
12993
12994                         intel_state->cdclk.pipe = pipe;
12995                 } else if (intel_cdclk_needs_modeset(&dev_priv->cdclk.actual,
12996                                                      &intel_state->cdclk.actual)) {
12997                         ret = intel_modeset_all_pipes(state);
12998                         if (ret < 0)
12999                                 return ret;
13000
13001                         intel_state->cdclk.pipe = INVALID_PIPE;
13002                 }
13003
13004                 DRM_DEBUG_KMS("New cdclk calculated to be logical %u kHz, actual %u kHz\n",
13005                               intel_state->cdclk.logical.cdclk,
13006                               intel_state->cdclk.actual.cdclk);
13007                 DRM_DEBUG_KMS("New voltage level calculated to be logical %u, actual %u\n",
13008                               intel_state->cdclk.logical.voltage_level,
13009                               intel_state->cdclk.actual.voltage_level);
13010         }
13011
13012         intel_modeset_clear_plls(state);
13013
13014         if (IS_HASWELL(dev_priv))
13015                 return haswell_mode_set_planes_workaround(state);
13016
13017         return 0;
13018 }
13019
13020 /*
13021  * Handle calculation of various watermark data at the end of the atomic check
13022  * phase.  The code here should be run after the per-crtc and per-plane 'check'
13023  * handlers to ensure that all derived state has been updated.
13024  */
13025 static int calc_watermark_data(struct intel_atomic_state *state)
13026 {
13027         struct drm_device *dev = state->base.dev;
13028         struct drm_i915_private *dev_priv = to_i915(dev);
13029
13030         /* Is there platform-specific watermark information to calculate? */
13031         if (dev_priv->display.compute_global_watermarks)
13032                 return dev_priv->display.compute_global_watermarks(state);
13033
13034         return 0;
13035 }
13036
13037 /**
13038  * intel_atomic_check - validate state object
13039  * @dev: drm device
13040  * @state: state to validate
13041  */
13042 static int intel_atomic_check(struct drm_device *dev,
13043                               struct drm_atomic_state *state)
13044 {
13045         struct drm_i915_private *dev_priv = to_i915(dev);
13046         struct intel_atomic_state *intel_state = to_intel_atomic_state(state);
13047         struct drm_crtc *crtc;
13048         struct drm_crtc_state *old_crtc_state, *crtc_state;
13049         int ret, i;
13050         bool any_ms = intel_state->cdclk.force_min_cdclk_changed;
13051
13052         /* Catch I915_MODE_FLAG_INHERITED */
13053         for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state,
13054                                       crtc_state, i) {
13055                 if (crtc_state->mode.private_flags !=
13056                     old_crtc_state->mode.private_flags)
13057                         crtc_state->mode_changed = true;
13058         }
13059
13060         ret = drm_atomic_helper_check_modeset(dev, state);
13061         if (ret)
13062                 return ret;
13063
13064         for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, crtc_state, i) {
13065                 struct intel_crtc_state *pipe_config =
13066                         to_intel_crtc_state(crtc_state);
13067
13068                 if (!needs_modeset(crtc_state))
13069                         continue;
13070
13071                 if (!crtc_state->enable) {
13072                         any_ms = true;
13073                         continue;
13074                 }
13075
13076                 ret = intel_modeset_pipe_config(crtc, pipe_config);
13077                 if (ret == -EDEADLK)
13078                         return ret;
13079                 if (ret) {
13080                         intel_dump_pipe_config(to_intel_crtc(crtc),
13081                                                pipe_config, "[failed]");
13082                         return ret;
13083                 }
13084
13085                 if (intel_pipe_config_compare(dev_priv,
13086                                         to_intel_crtc_state(old_crtc_state),
13087                                         pipe_config, true)) {
13088                         crtc_state->mode_changed = false;
13089                         pipe_config->update_pipe = true;
13090                 }
13091
13092                 if (needs_modeset(crtc_state))
13093                         any_ms = true;
13094
13095                 intel_dump_pipe_config(to_intel_crtc(crtc), pipe_config,
13096                                        needs_modeset(crtc_state) ?
13097                                        "[modeset]" : "[fastset]");
13098         }
13099
13100         ret = drm_dp_mst_atomic_check(state);
13101         if (ret)
13102                 return ret;
13103
13104         if (any_ms) {
13105                 ret = intel_modeset_checks(state);
13106
13107                 if (ret)
13108                         return ret;
13109         } else {
13110                 intel_state->cdclk.logical = dev_priv->cdclk.logical;
13111         }
13112
13113         ret = icl_add_linked_planes(intel_state);
13114         if (ret)
13115                 return ret;
13116
13117         ret = drm_atomic_helper_check_planes(dev, state);
13118         if (ret)
13119                 return ret;
13120
13121         intel_fbc_choose_crtc(dev_priv, intel_state);
13122         return calc_watermark_data(intel_state);
13123 }
13124
13125 static int intel_atomic_prepare_commit(struct drm_device *dev,
13126                                        struct drm_atomic_state *state)
13127 {
13128         return drm_atomic_helper_prepare_planes(dev, state);
13129 }
13130
13131 u32 intel_crtc_get_vblank_counter(struct intel_crtc *crtc)
13132 {
13133         struct drm_device *dev = crtc->base.dev;
13134         struct drm_vblank_crtc *vblank = &dev->vblank[drm_crtc_index(&crtc->base)];
13135
13136         if (!vblank->max_vblank_count)
13137                 return (u32)drm_crtc_accurate_vblank_count(&crtc->base);
13138
13139         return dev->driver->get_vblank_counter(dev, crtc->pipe);
13140 }
13141
13142 static void intel_update_crtc(struct drm_crtc *crtc,
13143                               struct drm_atomic_state *state,
13144                               struct drm_crtc_state *old_crtc_state,
13145                               struct drm_crtc_state *new_crtc_state)
13146 {
13147         struct drm_device *dev = crtc->dev;
13148         struct drm_i915_private *dev_priv = to_i915(dev);
13149         struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
13150         struct intel_crtc_state *pipe_config = to_intel_crtc_state(new_crtc_state);
13151         bool modeset = needs_modeset(new_crtc_state);
13152         struct intel_plane_state *new_plane_state =
13153                 intel_atomic_get_new_plane_state(to_intel_atomic_state(state),
13154                                                  to_intel_plane(crtc->primary));
13155
13156         if (modeset) {
13157                 update_scanline_offset(pipe_config);
13158                 dev_priv->display.crtc_enable(pipe_config, state);
13159
13160                 /* vblanks work again, re-enable pipe CRC. */
13161                 intel_crtc_enable_pipe_crc(intel_crtc);
13162         } else {
13163                 intel_pre_plane_update(to_intel_crtc_state(old_crtc_state),
13164                                        pipe_config);
13165
13166                 if (pipe_config->update_pipe)
13167                         intel_encoders_update_pipe(crtc, pipe_config, state);
13168         }
13169
13170         if (pipe_config->update_pipe && !pipe_config->enable_fbc)
13171                 intel_fbc_disable(intel_crtc);
13172         else if (new_plane_state)
13173                 intel_fbc_enable(intel_crtc, pipe_config, new_plane_state);
13174
13175         intel_begin_crtc_commit(to_intel_atomic_state(state), intel_crtc);
13176
13177         if (INTEL_GEN(dev_priv) >= 9)
13178                 skl_update_planes_on_crtc(to_intel_atomic_state(state), intel_crtc);
13179         else
13180                 i9xx_update_planes_on_crtc(to_intel_atomic_state(state), intel_crtc);
13181
13182         intel_finish_crtc_commit(to_intel_atomic_state(state), intel_crtc);
13183 }
13184
13185 static void intel_update_crtcs(struct drm_atomic_state *state)
13186 {
13187         struct drm_crtc *crtc;
13188         struct drm_crtc_state *old_crtc_state, *new_crtc_state;
13189         int i;
13190
13191         for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) {
13192                 if (!new_crtc_state->active)
13193                         continue;
13194
13195                 intel_update_crtc(crtc, state, old_crtc_state,
13196                                   new_crtc_state);
13197         }
13198 }
13199
13200 static void skl_update_crtcs(struct drm_atomic_state *state)
13201 {
13202         struct drm_i915_private *dev_priv = to_i915(state->dev);
13203         struct intel_atomic_state *intel_state = to_intel_atomic_state(state);
13204         struct drm_crtc *crtc;
13205         struct intel_crtc *intel_crtc;
13206         struct drm_crtc_state *old_crtc_state, *new_crtc_state;
13207         struct intel_crtc_state *cstate;
13208         unsigned int updated = 0;
13209         bool progress;
13210         enum pipe pipe;
13211         int i;
13212         u8 hw_enabled_slices = dev_priv->wm.skl_hw.ddb.enabled_slices;
13213         u8 required_slices = intel_state->wm_results.ddb.enabled_slices;
13214         struct skl_ddb_entry entries[I915_MAX_PIPES] = {};
13215
13216         for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i)
13217                 /* ignore allocations for crtc's that have been turned off. */
13218                 if (new_crtc_state->active)
13219                         entries[i] = to_intel_crtc_state(old_crtc_state)->wm.skl.ddb;
13220
13221         /* If 2nd DBuf slice required, enable it here */
13222         if (INTEL_GEN(dev_priv) >= 11 && required_slices > hw_enabled_slices)
13223                 icl_dbuf_slices_update(dev_priv, required_slices);
13224
13225         /*
13226          * Whenever the number of active pipes changes, we need to make sure we
13227          * update the pipes in the right order so that their ddb allocations
13228          * never overlap with eachother inbetween CRTC updates. Otherwise we'll
13229          * cause pipe underruns and other bad stuff.
13230          */
13231         do {
13232                 progress = false;
13233
13234                 for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) {
13235                         bool vbl_wait = false;
13236                         unsigned int cmask = drm_crtc_mask(crtc);
13237
13238                         intel_crtc = to_intel_crtc(crtc);
13239                         cstate = to_intel_crtc_state(new_crtc_state);
13240                         pipe = intel_crtc->pipe;
13241
13242                         if (updated & cmask || !cstate->base.active)
13243                                 continue;
13244
13245                         if (skl_ddb_allocation_overlaps(&cstate->wm.skl.ddb,
13246                                                         entries,
13247                                                         INTEL_INFO(dev_priv)->num_pipes, i))
13248                                 continue;
13249
13250                         updated |= cmask;
13251                         entries[i] = cstate->wm.skl.ddb;
13252
13253                         /*
13254                          * If this is an already active pipe, it's DDB changed,
13255                          * and this isn't the last pipe that needs updating
13256                          * then we need to wait for a vblank to pass for the
13257                          * new ddb allocation to take effect.
13258                          */
13259                         if (!skl_ddb_entry_equal(&cstate->wm.skl.ddb,
13260                                                  &to_intel_crtc_state(old_crtc_state)->wm.skl.ddb) &&
13261                             !new_crtc_state->active_changed &&
13262                             intel_state->wm_results.dirty_pipes != updated)
13263                                 vbl_wait = true;
13264
13265                         intel_update_crtc(crtc, state, old_crtc_state,
13266                                           new_crtc_state);
13267
13268                         if (vbl_wait)
13269                                 intel_wait_for_vblank(dev_priv, pipe);
13270
13271                         progress = true;
13272                 }
13273         } while (progress);
13274
13275         /* If 2nd DBuf slice is no more required disable it */
13276         if (INTEL_GEN(dev_priv) >= 11 && required_slices < hw_enabled_slices)
13277                 icl_dbuf_slices_update(dev_priv, required_slices);
13278 }
13279
13280 static void intel_atomic_helper_free_state(struct drm_i915_private *dev_priv)
13281 {
13282         struct intel_atomic_state *state, *next;
13283         struct llist_node *freed;
13284
13285         freed = llist_del_all(&dev_priv->atomic_helper.free_list);
13286         llist_for_each_entry_safe(state, next, freed, freed)
13287                 drm_atomic_state_put(&state->base);
13288 }
13289
13290 static void intel_atomic_helper_free_state_worker(struct work_struct *work)
13291 {
13292         struct drm_i915_private *dev_priv =
13293                 container_of(work, typeof(*dev_priv), atomic_helper.free_work);
13294
13295         intel_atomic_helper_free_state(dev_priv);
13296 }
13297
13298 static void intel_atomic_commit_fence_wait(struct intel_atomic_state *intel_state)
13299 {
13300         struct wait_queue_entry wait_fence, wait_reset;
13301         struct drm_i915_private *dev_priv = to_i915(intel_state->base.dev);
13302
13303         init_wait_entry(&wait_fence, 0);
13304         init_wait_entry(&wait_reset, 0);
13305         for (;;) {
13306                 prepare_to_wait(&intel_state->commit_ready.wait,
13307                                 &wait_fence, TASK_UNINTERRUPTIBLE);
13308                 prepare_to_wait(&dev_priv->gpu_error.wait_queue,
13309                                 &wait_reset, TASK_UNINTERRUPTIBLE);
13310
13311
13312                 if (i915_sw_fence_done(&intel_state->commit_ready)
13313                     || test_bit(I915_RESET_MODESET, &dev_priv->gpu_error.flags))
13314                         break;
13315
13316                 schedule();
13317         }
13318         finish_wait(&intel_state->commit_ready.wait, &wait_fence);
13319         finish_wait(&dev_priv->gpu_error.wait_queue, &wait_reset);
13320 }
13321
13322 static void intel_atomic_cleanup_work(struct work_struct *work)
13323 {
13324         struct drm_atomic_state *state =
13325                 container_of(work, struct drm_atomic_state, commit_work);
13326         struct drm_i915_private *i915 = to_i915(state->dev);
13327
13328         drm_atomic_helper_cleanup_planes(&i915->drm, state);
13329         drm_atomic_helper_commit_cleanup_done(state);
13330         drm_atomic_state_put(state);
13331
13332         intel_atomic_helper_free_state(i915);
13333 }
13334
13335 static void intel_atomic_commit_tail(struct drm_atomic_state *state)
13336 {
13337         struct drm_device *dev = state->dev;
13338         struct intel_atomic_state *intel_state = to_intel_atomic_state(state);
13339         struct drm_i915_private *dev_priv = to_i915(dev);
13340         struct drm_crtc_state *old_crtc_state, *new_crtc_state;
13341         struct intel_crtc_state *new_intel_crtc_state, *old_intel_crtc_state;
13342         struct drm_crtc *crtc;
13343         struct intel_crtc *intel_crtc;
13344         u64 put_domains[I915_MAX_PIPES] = {};
13345         intel_wakeref_t wakeref = 0;
13346         int i;
13347
13348         intel_atomic_commit_fence_wait(intel_state);
13349
13350         drm_atomic_helper_wait_for_dependencies(state);
13351
13352         if (intel_state->modeset)
13353                 wakeref = intel_display_power_get(dev_priv, POWER_DOMAIN_MODESET);
13354
13355         for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) {
13356                 old_intel_crtc_state = to_intel_crtc_state(old_crtc_state);
13357                 new_intel_crtc_state = to_intel_crtc_state(new_crtc_state);
13358                 intel_crtc = to_intel_crtc(crtc);
13359
13360                 if (needs_modeset(new_crtc_state) ||
13361                     to_intel_crtc_state(new_crtc_state)->update_pipe) {
13362
13363                         put_domains[intel_crtc->pipe] =
13364                                 modeset_get_crtc_power_domains(crtc,
13365                                         new_intel_crtc_state);
13366                 }
13367
13368                 if (!needs_modeset(new_crtc_state))
13369                         continue;
13370
13371                 intel_pre_plane_update(old_intel_crtc_state, new_intel_crtc_state);
13372
13373                 if (old_crtc_state->active) {
13374                         intel_crtc_disable_planes(intel_state, intel_crtc);
13375
13376                         /*
13377                          * We need to disable pipe CRC before disabling the pipe,
13378                          * or we race against vblank off.
13379                          */
13380                         intel_crtc_disable_pipe_crc(intel_crtc);
13381
13382                         dev_priv->display.crtc_disable(old_intel_crtc_state, state);
13383                         intel_crtc->active = false;
13384                         intel_fbc_disable(intel_crtc);
13385                         intel_disable_shared_dpll(old_intel_crtc_state);
13386
13387                         /*
13388                          * Underruns don't always raise
13389                          * interrupts, so check manually.
13390                          */
13391                         intel_check_cpu_fifo_underruns(dev_priv);
13392                         intel_check_pch_fifo_underruns(dev_priv);
13393
13394                         /* FIXME unify this for all platforms */
13395                         if (!new_crtc_state->active &&
13396                             !HAS_GMCH(dev_priv) &&
13397                             dev_priv->display.initial_watermarks)
13398                                 dev_priv->display.initial_watermarks(intel_state,
13399                                                                      new_intel_crtc_state);
13400                 }
13401         }
13402
13403         /* FIXME: Eventually get rid of our intel_crtc->config pointer */
13404         for_each_new_crtc_in_state(state, crtc, new_crtc_state, i)
13405                 to_intel_crtc(crtc)->config = to_intel_crtc_state(new_crtc_state);
13406
13407         if (intel_state->modeset) {
13408                 drm_atomic_helper_update_legacy_modeset_state(state->dev, state);
13409
13410                 intel_set_cdclk_pre_plane_update(dev_priv,
13411                                                  &intel_state->cdclk.actual,
13412                                                  &dev_priv->cdclk.actual,
13413                                                  intel_state->cdclk.pipe);
13414
13415                 /*
13416                  * SKL workaround: bspec recommends we disable the SAGV when we
13417                  * have more then one pipe enabled
13418                  */
13419                 if (!intel_can_enable_sagv(state))
13420                         intel_disable_sagv(dev_priv);
13421
13422                 intel_modeset_verify_disabled(dev, state);
13423         }
13424
13425         /* Complete the events for pipes that have now been disabled */
13426         for_each_new_crtc_in_state(state, crtc, new_crtc_state, i) {
13427                 bool modeset = needs_modeset(new_crtc_state);
13428
13429                 /* Complete events for now disable pipes here. */
13430                 if (modeset && !new_crtc_state->active && new_crtc_state->event) {
13431                         spin_lock_irq(&dev->event_lock);
13432                         drm_crtc_send_vblank_event(crtc, new_crtc_state->event);
13433                         spin_unlock_irq(&dev->event_lock);
13434
13435                         new_crtc_state->event = NULL;
13436                 }
13437         }
13438
13439         /* Now enable the clocks, plane, pipe, and connectors that we set up. */
13440         dev_priv->display.update_crtcs(state);
13441
13442         if (intel_state->modeset)
13443                 intel_set_cdclk_post_plane_update(dev_priv,
13444                                                   &intel_state->cdclk.actual,
13445                                                   &dev_priv->cdclk.actual,
13446                                                   intel_state->cdclk.pipe);
13447
13448         /* FIXME: We should call drm_atomic_helper_commit_hw_done() here
13449          * already, but still need the state for the delayed optimization. To
13450          * fix this:
13451          * - wrap the optimization/post_plane_update stuff into a per-crtc work.
13452          * - schedule that vblank worker _before_ calling hw_done
13453          * - at the start of commit_tail, cancel it _synchrously
13454          * - switch over to the vblank wait helper in the core after that since
13455          *   we don't need out special handling any more.
13456          */
13457         drm_atomic_helper_wait_for_flip_done(dev, state);
13458
13459         for_each_new_crtc_in_state(state, crtc, new_crtc_state, i) {
13460                 new_intel_crtc_state = to_intel_crtc_state(new_crtc_state);
13461
13462                 if (new_crtc_state->active &&
13463                     !needs_modeset(new_crtc_state) &&
13464                     (new_intel_crtc_state->base.color_mgmt_changed ||
13465                      new_intel_crtc_state->update_pipe))
13466                         intel_color_load_luts(new_intel_crtc_state);
13467         }
13468
13469         /*
13470          * Now that the vblank has passed, we can go ahead and program the
13471          * optimal watermarks on platforms that need two-step watermark
13472          * programming.
13473          *
13474          * TODO: Move this (and other cleanup) to an async worker eventually.
13475          */
13476         for_each_new_crtc_in_state(state, crtc, new_crtc_state, i) {
13477                 new_intel_crtc_state = to_intel_crtc_state(new_crtc_state);
13478
13479                 if (dev_priv->display.optimize_watermarks)
13480                         dev_priv->display.optimize_watermarks(intel_state,
13481                                                               new_intel_crtc_state);
13482         }
13483
13484         for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) {
13485                 intel_post_plane_update(to_intel_crtc_state(old_crtc_state));
13486
13487                 if (put_domains[i])
13488                         modeset_put_power_domains(dev_priv, put_domains[i]);
13489
13490                 intel_modeset_verify_crtc(crtc, state, old_crtc_state, new_crtc_state);
13491         }
13492
13493         if (intel_state->modeset)
13494                 intel_verify_planes(intel_state);
13495
13496         if (intel_state->modeset && intel_can_enable_sagv(state))
13497                 intel_enable_sagv(dev_priv);
13498
13499         drm_atomic_helper_commit_hw_done(state);
13500
13501         if (intel_state->modeset) {
13502                 /* As one of the primary mmio accessors, KMS has a high
13503                  * likelihood of triggering bugs in unclaimed access. After we
13504                  * finish modesetting, see if an error has been flagged, and if
13505                  * so enable debugging for the next modeset - and hope we catch
13506                  * the culprit.
13507                  */
13508                 intel_uncore_arm_unclaimed_mmio_detection(&dev_priv->uncore);
13509                 intel_display_power_put(dev_priv, POWER_DOMAIN_MODESET, wakeref);
13510         }
13511
13512         /*
13513          * Defer the cleanup of the old state to a separate worker to not
13514          * impede the current task (userspace for blocking modesets) that
13515          * are executed inline. For out-of-line asynchronous modesets/flips,
13516          * deferring to a new worker seems overkill, but we would place a
13517          * schedule point (cond_resched()) here anyway to keep latencies
13518          * down.
13519          */
13520         INIT_WORK(&state->commit_work, intel_atomic_cleanup_work);
13521         queue_work(system_highpri_wq, &state->commit_work);
13522 }
13523
13524 static void intel_atomic_commit_work(struct work_struct *work)
13525 {
13526         struct drm_atomic_state *state =
13527                 container_of(work, struct drm_atomic_state, commit_work);
13528
13529         intel_atomic_commit_tail(state);
13530 }
13531
13532 static int __i915_sw_fence_call
13533 intel_atomic_commit_ready(struct i915_sw_fence *fence,
13534                           enum i915_sw_fence_notify notify)
13535 {
13536         struct intel_atomic_state *state =
13537                 container_of(fence, struct intel_atomic_state, commit_ready);
13538
13539         switch (notify) {
13540         case FENCE_COMPLETE:
13541                 /* we do blocking waits in the worker, nothing to do here */
13542                 break;
13543         case FENCE_FREE:
13544                 {
13545                         struct intel_atomic_helper *helper =
13546                                 &to_i915(state->base.dev)->atomic_helper;
13547
13548                         if (llist_add(&state->freed, &helper->free_list))
13549                                 schedule_work(&helper->free_work);
13550                         break;
13551                 }
13552         }
13553
13554         return NOTIFY_DONE;
13555 }
13556
13557 static void intel_atomic_track_fbs(struct drm_atomic_state *state)
13558 {
13559         struct drm_plane_state *old_plane_state, *new_plane_state;
13560         struct drm_plane *plane;
13561         int i;
13562
13563         for_each_oldnew_plane_in_state(state, plane, old_plane_state, new_plane_state, i)
13564                 i915_gem_track_fb(intel_fb_obj(old_plane_state->fb),
13565                                   intel_fb_obj(new_plane_state->fb),
13566                                   to_intel_plane(plane)->frontbuffer_bit);
13567 }
13568
13569 /**
13570  * intel_atomic_commit - commit validated state object
13571  * @dev: DRM device
13572  * @state: the top-level driver state object
13573  * @nonblock: nonblocking commit
13574  *
13575  * This function commits a top-level state object that has been validated
13576  * with drm_atomic_helper_check().
13577  *
13578  * RETURNS
13579  * Zero for success or -errno.
13580  */
13581 static int intel_atomic_commit(struct drm_device *dev,
13582                                struct drm_atomic_state *state,
13583                                bool nonblock)
13584 {
13585         struct intel_atomic_state *intel_state = to_intel_atomic_state(state);
13586         struct drm_i915_private *dev_priv = to_i915(dev);
13587         int ret = 0;
13588
13589         drm_atomic_state_get(state);
13590         i915_sw_fence_init(&intel_state->commit_ready,
13591                            intel_atomic_commit_ready);
13592
13593         /*
13594          * The intel_legacy_cursor_update() fast path takes care
13595          * of avoiding the vblank waits for simple cursor
13596          * movement and flips. For cursor on/off and size changes,
13597          * we want to perform the vblank waits so that watermark
13598          * updates happen during the correct frames. Gen9+ have
13599          * double buffered watermarks and so shouldn't need this.
13600          *
13601          * Unset state->legacy_cursor_update before the call to
13602          * drm_atomic_helper_setup_commit() because otherwise
13603          * drm_atomic_helper_wait_for_flip_done() is a noop and
13604          * we get FIFO underruns because we didn't wait
13605          * for vblank.
13606          *
13607          * FIXME doing watermarks and fb cleanup from a vblank worker
13608          * (assuming we had any) would solve these problems.
13609          */
13610         if (INTEL_GEN(dev_priv) < 9 && state->legacy_cursor_update) {
13611                 struct intel_crtc_state *new_crtc_state;
13612                 struct intel_crtc *crtc;
13613                 int i;
13614
13615                 for_each_new_intel_crtc_in_state(intel_state, crtc, new_crtc_state, i)
13616                         if (new_crtc_state->wm.need_postvbl_update ||
13617                             new_crtc_state->update_wm_post)
13618                                 state->legacy_cursor_update = false;
13619         }
13620
13621         ret = intel_atomic_prepare_commit(dev, state);
13622         if (ret) {
13623                 DRM_DEBUG_ATOMIC("Preparing state failed with %i\n", ret);
13624                 i915_sw_fence_commit(&intel_state->commit_ready);
13625                 return ret;
13626         }
13627
13628         ret = drm_atomic_helper_setup_commit(state, nonblock);
13629         if (!ret)
13630                 ret = drm_atomic_helper_swap_state(state, true);
13631
13632         if (ret) {
13633                 i915_sw_fence_commit(&intel_state->commit_ready);
13634
13635                 drm_atomic_helper_cleanup_planes(dev, state);
13636                 return ret;
13637         }
13638         dev_priv->wm.distrust_bios_wm = false;
13639         intel_shared_dpll_swap_state(state);
13640         intel_atomic_track_fbs(state);
13641
13642         if (intel_state->modeset) {
13643                 memcpy(dev_priv->min_cdclk, intel_state->min_cdclk,
13644                        sizeof(intel_state->min_cdclk));
13645                 memcpy(dev_priv->min_voltage_level,
13646                        intel_state->min_voltage_level,
13647                        sizeof(intel_state->min_voltage_level));
13648                 dev_priv->active_crtcs = intel_state->active_crtcs;
13649                 dev_priv->cdclk.force_min_cdclk =
13650                         intel_state->cdclk.force_min_cdclk;
13651
13652                 intel_cdclk_swap_state(intel_state);
13653         }
13654
13655         drm_atomic_state_get(state);
13656         INIT_WORK(&state->commit_work, intel_atomic_commit_work);
13657
13658         i915_sw_fence_commit(&intel_state->commit_ready);
13659         if (nonblock && intel_state->modeset) {
13660                 queue_work(dev_priv->modeset_wq, &state->commit_work);
13661         } else if (nonblock) {
13662                 queue_work(system_unbound_wq, &state->commit_work);
13663         } else {
13664                 if (intel_state->modeset)
13665                         flush_workqueue(dev_priv->modeset_wq);
13666                 intel_atomic_commit_tail(state);
13667         }
13668
13669         return 0;
13670 }
13671
13672 static const struct drm_crtc_funcs intel_crtc_funcs = {
13673         .gamma_set = drm_atomic_helper_legacy_gamma_set,
13674         .set_config = drm_atomic_helper_set_config,
13675         .destroy = intel_crtc_destroy,
13676         .page_flip = drm_atomic_helper_page_flip,
13677         .atomic_duplicate_state = intel_crtc_duplicate_state,
13678         .atomic_destroy_state = intel_crtc_destroy_state,
13679         .set_crc_source = intel_crtc_set_crc_source,
13680         .verify_crc_source = intel_crtc_verify_crc_source,
13681         .get_crc_sources = intel_crtc_get_crc_sources,
13682 };
13683
13684 struct wait_rps_boost {
13685         struct wait_queue_entry wait;
13686
13687         struct drm_crtc *crtc;
13688         struct i915_request *request;
13689 };
13690
13691 static int do_rps_boost(struct wait_queue_entry *_wait,
13692                         unsigned mode, int sync, void *key)
13693 {
13694         struct wait_rps_boost *wait = container_of(_wait, typeof(*wait), wait);
13695         struct i915_request *rq = wait->request;
13696
13697         /*
13698          * If we missed the vblank, but the request is already running it
13699          * is reasonable to assume that it will complete before the next
13700          * vblank without our intervention, so leave RPS alone.
13701          */
13702         if (!i915_request_started(rq))
13703                 gen6_rps_boost(rq);
13704         i915_request_put(rq);
13705
13706         drm_crtc_vblank_put(wait->crtc);
13707
13708         list_del(&wait->wait.entry);
13709         kfree(wait);
13710         return 1;
13711 }
13712
13713 static void add_rps_boost_after_vblank(struct drm_crtc *crtc,
13714                                        struct dma_fence *fence)
13715 {
13716         struct wait_rps_boost *wait;
13717
13718         if (!dma_fence_is_i915(fence))
13719                 return;
13720
13721         if (INTEL_GEN(to_i915(crtc->dev)) < 6)
13722                 return;
13723
13724         if (drm_crtc_vblank_get(crtc))
13725                 return;
13726
13727         wait = kmalloc(sizeof(*wait), GFP_KERNEL);
13728         if (!wait) {
13729                 drm_crtc_vblank_put(crtc);
13730                 return;
13731         }
13732
13733         wait->request = to_request(dma_fence_get(fence));
13734         wait->crtc = crtc;
13735
13736         wait->wait.func = do_rps_boost;
13737         wait->wait.flags = 0;
13738
13739         add_wait_queue(drm_crtc_vblank_waitqueue(crtc), &wait->wait);
13740 }
13741
13742 static int intel_plane_pin_fb(struct intel_plane_state *plane_state)
13743 {
13744         struct intel_plane *plane = to_intel_plane(plane_state->base.plane);
13745         struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
13746         struct drm_framebuffer *fb = plane_state->base.fb;
13747         struct i915_vma *vma;
13748
13749         if (plane->id == PLANE_CURSOR &&
13750             INTEL_INFO(dev_priv)->display.cursor_needs_physical) {
13751                 struct drm_i915_gem_object *obj = intel_fb_obj(fb);
13752                 const int align = intel_cursor_alignment(dev_priv);
13753                 int err;
13754
13755                 err = i915_gem_object_attach_phys(obj, align);
13756                 if (err)
13757                         return err;
13758         }
13759
13760         vma = intel_pin_and_fence_fb_obj(fb,
13761                                          &plane_state->view,
13762                                          intel_plane_uses_fence(plane_state),
13763                                          &plane_state->flags);
13764         if (IS_ERR(vma))
13765                 return PTR_ERR(vma);
13766
13767         plane_state->vma = vma;
13768
13769         return 0;
13770 }
13771
13772 static void intel_plane_unpin_fb(struct intel_plane_state *old_plane_state)
13773 {
13774         struct i915_vma *vma;
13775
13776         vma = fetch_and_zero(&old_plane_state->vma);
13777         if (vma)
13778                 intel_unpin_fb_vma(vma, old_plane_state->flags);
13779 }
13780
13781 static void fb_obj_bump_render_priority(struct drm_i915_gem_object *obj)
13782 {
13783         struct i915_sched_attr attr = {
13784                 .priority = I915_PRIORITY_DISPLAY,
13785         };
13786
13787         i915_gem_object_wait_priority(obj, 0, &attr);
13788 }
13789
13790 /**
13791  * intel_prepare_plane_fb - Prepare fb for usage on plane
13792  * @plane: drm plane to prepare for
13793  * @new_state: the plane state being prepared
13794  *
13795  * Prepares a framebuffer for usage on a display plane.  Generally this
13796  * involves pinning the underlying object and updating the frontbuffer tracking
13797  * bits.  Some older platforms need special physical address handling for
13798  * cursor planes.
13799  *
13800  * Must be called with struct_mutex held.
13801  *
13802  * Returns 0 on success, negative error code on failure.
13803  */
13804 int
13805 intel_prepare_plane_fb(struct drm_plane *plane,
13806                        struct drm_plane_state *new_state)
13807 {
13808         struct intel_atomic_state *intel_state =
13809                 to_intel_atomic_state(new_state->state);
13810         struct drm_i915_private *dev_priv = to_i915(plane->dev);
13811         struct drm_framebuffer *fb = new_state->fb;
13812         struct drm_i915_gem_object *obj = intel_fb_obj(fb);
13813         struct drm_i915_gem_object *old_obj = intel_fb_obj(plane->state->fb);
13814         int ret;
13815
13816         if (old_obj) {
13817                 struct drm_crtc_state *crtc_state =
13818                         drm_atomic_get_new_crtc_state(new_state->state,
13819                                                       plane->state->crtc);
13820
13821                 /* Big Hammer, we also need to ensure that any pending
13822                  * MI_WAIT_FOR_EVENT inside a user batch buffer on the
13823                  * current scanout is retired before unpinning the old
13824                  * framebuffer. Note that we rely on userspace rendering
13825                  * into the buffer attached to the pipe they are waiting
13826                  * on. If not, userspace generates a GPU hang with IPEHR
13827                  * point to the MI_WAIT_FOR_EVENT.
13828                  *
13829                  * This should only fail upon a hung GPU, in which case we
13830                  * can safely continue.
13831                  */
13832                 if (needs_modeset(crtc_state)) {
13833                         ret = i915_sw_fence_await_reservation(&intel_state->commit_ready,
13834                                                               old_obj->resv, NULL,
13835                                                               false, 0,
13836                                                               GFP_KERNEL);
13837                         if (ret < 0)
13838                                 return ret;
13839                 }
13840         }
13841
13842         if (new_state->fence) { /* explicit fencing */
13843                 ret = i915_sw_fence_await_dma_fence(&intel_state->commit_ready,
13844                                                     new_state->fence,
13845                                                     I915_FENCE_TIMEOUT,
13846                                                     GFP_KERNEL);
13847                 if (ret < 0)
13848                         return ret;
13849         }
13850
13851         if (!obj)
13852                 return 0;
13853
13854         ret = i915_gem_object_pin_pages(obj);
13855         if (ret)
13856                 return ret;
13857
13858         ret = mutex_lock_interruptible(&dev_priv->drm.struct_mutex);
13859         if (ret) {
13860                 i915_gem_object_unpin_pages(obj);
13861                 return ret;
13862         }
13863
13864         ret = intel_plane_pin_fb(to_intel_plane_state(new_state));
13865
13866         mutex_unlock(&dev_priv->drm.struct_mutex);
13867         i915_gem_object_unpin_pages(obj);
13868         if (ret)
13869                 return ret;
13870
13871         fb_obj_bump_render_priority(obj);
13872         intel_fb_obj_flush(obj, ORIGIN_DIRTYFB);
13873
13874         if (!new_state->fence) { /* implicit fencing */
13875                 struct dma_fence *fence;
13876
13877                 ret = i915_sw_fence_await_reservation(&intel_state->commit_ready,
13878                                                       obj->resv, NULL,
13879                                                       false, I915_FENCE_TIMEOUT,
13880                                                       GFP_KERNEL);
13881                 if (ret < 0)
13882                         return ret;
13883
13884                 fence = reservation_object_get_excl_rcu(obj->resv);
13885                 if (fence) {
13886                         add_rps_boost_after_vblank(new_state->crtc, fence);
13887                         dma_fence_put(fence);
13888                 }
13889         } else {
13890                 add_rps_boost_after_vblank(new_state->crtc, new_state->fence);
13891         }
13892
13893         /*
13894          * We declare pageflips to be interactive and so merit a small bias
13895          * towards upclocking to deliver the frame on time. By only changing
13896          * the RPS thresholds to sample more regularly and aim for higher
13897          * clocks we can hopefully deliver low power workloads (like kodi)
13898          * that are not quite steady state without resorting to forcing
13899          * maximum clocks following a vblank miss (see do_rps_boost()).
13900          */
13901         if (!intel_state->rps_interactive) {
13902                 intel_rps_mark_interactive(dev_priv, true);
13903                 intel_state->rps_interactive = true;
13904         }
13905
13906         return 0;
13907 }
13908
13909 /**
13910  * intel_cleanup_plane_fb - Cleans up an fb after plane use
13911  * @plane: drm plane to clean up for
13912  * @old_state: the state from the previous modeset
13913  *
13914  * Cleans up a framebuffer that has just been removed from a plane.
13915  *
13916  * Must be called with struct_mutex held.
13917  */
13918 void
13919 intel_cleanup_plane_fb(struct drm_plane *plane,
13920                        struct drm_plane_state *old_state)
13921 {
13922         struct intel_atomic_state *intel_state =
13923                 to_intel_atomic_state(old_state->state);
13924         struct drm_i915_private *dev_priv = to_i915(plane->dev);
13925
13926         if (intel_state->rps_interactive) {
13927                 intel_rps_mark_interactive(dev_priv, false);
13928                 intel_state->rps_interactive = false;
13929         }
13930
13931         /* Should only be called after a successful intel_prepare_plane_fb()! */
13932         mutex_lock(&dev_priv->drm.struct_mutex);
13933         intel_plane_unpin_fb(to_intel_plane_state(old_state));
13934         mutex_unlock(&dev_priv->drm.struct_mutex);
13935 }
13936
13937 int
13938 skl_max_scale(const struct intel_crtc_state *crtc_state,
13939               u32 pixel_format)
13940 {
13941         struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
13942         struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
13943         int max_scale, mult;
13944         int crtc_clock, max_dotclk, tmpclk1, tmpclk2;
13945
13946         if (!crtc_state->base.enable)
13947                 return DRM_PLANE_HELPER_NO_SCALING;
13948
13949         crtc_clock = crtc_state->base.adjusted_mode.crtc_clock;
13950         max_dotclk = to_intel_atomic_state(crtc_state->base.state)->cdclk.logical.cdclk;
13951
13952         if (IS_GEMINILAKE(dev_priv) || INTEL_GEN(dev_priv) >= 10)
13953                 max_dotclk *= 2;
13954
13955         if (WARN_ON_ONCE(!crtc_clock || max_dotclk < crtc_clock))
13956                 return DRM_PLANE_HELPER_NO_SCALING;
13957
13958         /*
13959          * skl max scale is lower of:
13960          *    close to 3 but not 3, -1 is for that purpose
13961          *            or
13962          *    cdclk/crtc_clock
13963          */
13964         mult = is_planar_yuv_format(pixel_format) ? 2 : 3;
13965         tmpclk1 = (1 << 16) * mult - 1;
13966         tmpclk2 = (1 << 8) * ((max_dotclk << 8) / crtc_clock);
13967         max_scale = min(tmpclk1, tmpclk2);
13968
13969         return max_scale;
13970 }
13971
13972 static void intel_begin_crtc_commit(struct intel_atomic_state *state,
13973                                     struct intel_crtc *crtc)
13974 {
13975         struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
13976         struct intel_crtc_state *old_crtc_state =
13977                 intel_atomic_get_old_crtc_state(state, crtc);
13978         struct intel_crtc_state *new_crtc_state =
13979                 intel_atomic_get_new_crtc_state(state, crtc);
13980         bool modeset = needs_modeset(&new_crtc_state->base);
13981
13982         /* Perform vblank evasion around commit operation */
13983         intel_pipe_update_start(new_crtc_state);
13984
13985         if (modeset)
13986                 goto out;
13987
13988         if (new_crtc_state->base.color_mgmt_changed ||
13989             new_crtc_state->update_pipe)
13990                 intel_color_commit(new_crtc_state);
13991
13992         if (new_crtc_state->update_pipe)
13993                 intel_update_pipe_config(old_crtc_state, new_crtc_state);
13994         else if (INTEL_GEN(dev_priv) >= 9)
13995                 skl_detach_scalers(new_crtc_state);
13996
13997         if (INTEL_GEN(dev_priv) >= 9 || IS_BROADWELL(dev_priv))
13998                 bdw_set_pipemisc(new_crtc_state);
13999
14000 out:
14001         if (dev_priv->display.atomic_update_watermarks)
14002                 dev_priv->display.atomic_update_watermarks(state,
14003                                                            new_crtc_state);
14004 }
14005
14006 void intel_crtc_arm_fifo_underrun(struct intel_crtc *crtc,
14007                                   struct intel_crtc_state *crtc_state)
14008 {
14009         struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
14010
14011         if (!IS_GEN(dev_priv, 2))
14012                 intel_set_cpu_fifo_underrun_reporting(dev_priv, crtc->pipe, true);
14013
14014         if (crtc_state->has_pch_encoder) {
14015                 enum pipe pch_transcoder =
14016                         intel_crtc_pch_transcoder(crtc);
14017
14018                 intel_set_pch_fifo_underrun_reporting(dev_priv, pch_transcoder, true);
14019         }
14020 }
14021
14022 static void intel_finish_crtc_commit(struct intel_atomic_state *state,
14023                                      struct intel_crtc *crtc)
14024 {
14025         struct intel_crtc_state *old_crtc_state =
14026                 intel_atomic_get_old_crtc_state(state, crtc);
14027         struct intel_crtc_state *new_crtc_state =
14028                 intel_atomic_get_new_crtc_state(state, crtc);
14029
14030         intel_pipe_update_end(new_crtc_state);
14031
14032         if (new_crtc_state->update_pipe &&
14033             !needs_modeset(&new_crtc_state->base) &&
14034             old_crtc_state->base.mode.private_flags & I915_MODE_FLAG_INHERITED)
14035                 intel_crtc_arm_fifo_underrun(crtc, new_crtc_state);
14036 }
14037
14038 /**
14039  * intel_plane_destroy - destroy a plane
14040  * @plane: plane to destroy
14041  *
14042  * Common destruction function for all types of planes (primary, cursor,
14043  * sprite).
14044  */
14045 void intel_plane_destroy(struct drm_plane *plane)
14046 {
14047         drm_plane_cleanup(plane);
14048         kfree(to_intel_plane(plane));
14049 }
14050
14051 static bool i8xx_plane_format_mod_supported(struct drm_plane *_plane,
14052                                             u32 format, u64 modifier)
14053 {
14054         switch (modifier) {
14055         case DRM_FORMAT_MOD_LINEAR:
14056         case I915_FORMAT_MOD_X_TILED:
14057                 break;
14058         default:
14059                 return false;
14060         }
14061
14062         switch (format) {
14063         case DRM_FORMAT_C8:
14064         case DRM_FORMAT_RGB565:
14065         case DRM_FORMAT_XRGB1555:
14066         case DRM_FORMAT_XRGB8888:
14067                 return modifier == DRM_FORMAT_MOD_LINEAR ||
14068                         modifier == I915_FORMAT_MOD_X_TILED;
14069         default:
14070                 return false;
14071         }
14072 }
14073
14074 static bool i965_plane_format_mod_supported(struct drm_plane *_plane,
14075                                             u32 format, u64 modifier)
14076 {
14077         switch (modifier) {
14078         case DRM_FORMAT_MOD_LINEAR:
14079         case I915_FORMAT_MOD_X_TILED:
14080                 break;
14081         default:
14082                 return false;
14083         }
14084
14085         switch (format) {
14086         case DRM_FORMAT_C8:
14087         case DRM_FORMAT_RGB565:
14088         case DRM_FORMAT_XRGB8888:
14089         case DRM_FORMAT_XBGR8888:
14090         case DRM_FORMAT_XRGB2101010:
14091         case DRM_FORMAT_XBGR2101010:
14092                 return modifier == DRM_FORMAT_MOD_LINEAR ||
14093                         modifier == I915_FORMAT_MOD_X_TILED;
14094         default:
14095                 return false;
14096         }
14097 }
14098
14099 static bool intel_cursor_format_mod_supported(struct drm_plane *_plane,
14100                                               u32 format, u64 modifier)
14101 {
14102         return modifier == DRM_FORMAT_MOD_LINEAR &&
14103                 format == DRM_FORMAT_ARGB8888;
14104 }
14105
14106 static const struct drm_plane_funcs i965_plane_funcs = {
14107         .update_plane = drm_atomic_helper_update_plane,
14108         .disable_plane = drm_atomic_helper_disable_plane,
14109         .destroy = intel_plane_destroy,
14110         .atomic_get_property = intel_plane_atomic_get_property,
14111         .atomic_set_property = intel_plane_atomic_set_property,
14112         .atomic_duplicate_state = intel_plane_duplicate_state,
14113         .atomic_destroy_state = intel_plane_destroy_state,
14114         .format_mod_supported = i965_plane_format_mod_supported,
14115 };
14116
14117 static const struct drm_plane_funcs i8xx_plane_funcs = {
14118         .update_plane = drm_atomic_helper_update_plane,
14119         .disable_plane = drm_atomic_helper_disable_plane,
14120         .destroy = intel_plane_destroy,
14121         .atomic_get_property = intel_plane_atomic_get_property,
14122         .atomic_set_property = intel_plane_atomic_set_property,
14123         .atomic_duplicate_state = intel_plane_duplicate_state,
14124         .atomic_destroy_state = intel_plane_destroy_state,
14125         .format_mod_supported = i8xx_plane_format_mod_supported,
14126 };
14127
14128 static int
14129 intel_legacy_cursor_update(struct drm_plane *plane,
14130                            struct drm_crtc *crtc,
14131                            struct drm_framebuffer *fb,
14132                            int crtc_x, int crtc_y,
14133                            unsigned int crtc_w, unsigned int crtc_h,
14134                            u32 src_x, u32 src_y,
14135                            u32 src_w, u32 src_h,
14136                            struct drm_modeset_acquire_ctx *ctx)
14137 {
14138         struct drm_i915_private *dev_priv = to_i915(crtc->dev);
14139         int ret;
14140         struct drm_plane_state *old_plane_state, *new_plane_state;
14141         struct intel_plane *intel_plane = to_intel_plane(plane);
14142         struct drm_framebuffer *old_fb;
14143         struct intel_crtc_state *crtc_state =
14144                 to_intel_crtc_state(crtc->state);
14145         struct intel_crtc_state *new_crtc_state;
14146
14147         /*
14148          * When crtc is inactive or there is a modeset pending,
14149          * wait for it to complete in the slowpath
14150          */
14151         if (!crtc_state->base.active || needs_modeset(&crtc_state->base) ||
14152             crtc_state->update_pipe)
14153                 goto slow;
14154
14155         old_plane_state = plane->state;
14156         /*
14157          * Don't do an async update if there is an outstanding commit modifying
14158          * the plane.  This prevents our async update's changes from getting
14159          * overridden by a previous synchronous update's state.
14160          */
14161         if (old_plane_state->commit &&
14162             !try_wait_for_completion(&old_plane_state->commit->hw_done))
14163                 goto slow;
14164
14165         /*
14166          * If any parameters change that may affect watermarks,
14167          * take the slowpath. Only changing fb or position should be
14168          * in the fastpath.
14169          */
14170         if (old_plane_state->crtc != crtc ||
14171             old_plane_state->src_w != src_w ||
14172             old_plane_state->src_h != src_h ||
14173             old_plane_state->crtc_w != crtc_w ||
14174             old_plane_state->crtc_h != crtc_h ||
14175             !old_plane_state->fb != !fb)
14176                 goto slow;
14177
14178         new_plane_state = intel_plane_duplicate_state(plane);
14179         if (!new_plane_state)
14180                 return -ENOMEM;
14181
14182         new_crtc_state = to_intel_crtc_state(intel_crtc_duplicate_state(crtc));
14183         if (!new_crtc_state) {
14184                 ret = -ENOMEM;
14185                 goto out_free;
14186         }
14187
14188         drm_atomic_set_fb_for_plane(new_plane_state, fb);
14189
14190         new_plane_state->src_x = src_x;
14191         new_plane_state->src_y = src_y;
14192         new_plane_state->src_w = src_w;
14193         new_plane_state->src_h = src_h;
14194         new_plane_state->crtc_x = crtc_x;
14195         new_plane_state->crtc_y = crtc_y;
14196         new_plane_state->crtc_w = crtc_w;
14197         new_plane_state->crtc_h = crtc_h;
14198
14199         ret = intel_plane_atomic_check_with_state(crtc_state, new_crtc_state,
14200                                                   to_intel_plane_state(old_plane_state),
14201                                                   to_intel_plane_state(new_plane_state));
14202         if (ret)
14203                 goto out_free;
14204
14205         ret = mutex_lock_interruptible(&dev_priv->drm.struct_mutex);
14206         if (ret)
14207                 goto out_free;
14208
14209         ret = intel_plane_pin_fb(to_intel_plane_state(new_plane_state));
14210         if (ret)
14211                 goto out_unlock;
14212
14213         intel_fb_obj_flush(intel_fb_obj(fb), ORIGIN_FLIP);
14214
14215         old_fb = old_plane_state->fb;
14216         i915_gem_track_fb(intel_fb_obj(old_fb), intel_fb_obj(fb),
14217                           intel_plane->frontbuffer_bit);
14218
14219         /* Swap plane state */
14220         plane->state = new_plane_state;
14221
14222         /*
14223          * We cannot swap crtc_state as it may be in use by an atomic commit or
14224          * page flip that's running simultaneously. If we swap crtc_state and
14225          * destroy the old state, we will cause a use-after-free there.
14226          *
14227          * Only update active_planes, which is needed for our internal
14228          * bookkeeping. Either value will do the right thing when updating
14229          * planes atomically. If the cursor was part of the atomic update then
14230          * we would have taken the slowpath.
14231          */
14232         crtc_state->active_planes = new_crtc_state->active_planes;
14233
14234         if (plane->state->visible)
14235                 intel_update_plane(intel_plane, crtc_state,
14236                                    to_intel_plane_state(plane->state));
14237         else
14238                 intel_disable_plane(intel_plane, crtc_state);
14239
14240         intel_plane_unpin_fb(to_intel_plane_state(old_plane_state));
14241
14242 out_unlock:
14243         mutex_unlock(&dev_priv->drm.struct_mutex);
14244 out_free:
14245         if (new_crtc_state)
14246                 intel_crtc_destroy_state(crtc, &new_crtc_state->base);
14247         if (ret)
14248                 intel_plane_destroy_state(plane, new_plane_state);
14249         else
14250                 intel_plane_destroy_state(plane, old_plane_state);
14251         return ret;
14252
14253 slow:
14254         return drm_atomic_helper_update_plane(plane, crtc, fb,
14255                                               crtc_x, crtc_y, crtc_w, crtc_h,
14256                                               src_x, src_y, src_w, src_h, ctx);
14257 }
14258
14259 static const struct drm_plane_funcs intel_cursor_plane_funcs = {
14260         .update_plane = intel_legacy_cursor_update,
14261         .disable_plane = drm_atomic_helper_disable_plane,
14262         .destroy = intel_plane_destroy,
14263         .atomic_get_property = intel_plane_atomic_get_property,
14264         .atomic_set_property = intel_plane_atomic_set_property,
14265         .atomic_duplicate_state = intel_plane_duplicate_state,
14266         .atomic_destroy_state = intel_plane_destroy_state,
14267         .format_mod_supported = intel_cursor_format_mod_supported,
14268 };
14269
14270 static bool i9xx_plane_has_fbc(struct drm_i915_private *dev_priv,
14271                                enum i9xx_plane_id i9xx_plane)
14272 {
14273         if (!HAS_FBC(dev_priv))
14274                 return false;
14275
14276         if (IS_BROADWELL(dev_priv) || IS_HASWELL(dev_priv))
14277                 return i9xx_plane == PLANE_A; /* tied to pipe A */
14278         else if (IS_IVYBRIDGE(dev_priv))
14279                 return i9xx_plane == PLANE_A || i9xx_plane == PLANE_B ||
14280                         i9xx_plane == PLANE_C;
14281         else if (INTEL_GEN(dev_priv) >= 4)
14282                 return i9xx_plane == PLANE_A || i9xx_plane == PLANE_B;
14283         else
14284                 return i9xx_plane == PLANE_A;
14285 }
14286
14287 static struct intel_plane *
14288 intel_primary_plane_create(struct drm_i915_private *dev_priv, enum pipe pipe)
14289 {
14290         struct intel_plane *plane;
14291         const struct drm_plane_funcs *plane_funcs;
14292         unsigned int supported_rotations;
14293         unsigned int possible_crtcs;
14294         const u64 *modifiers;
14295         const u32 *formats;
14296         int num_formats;
14297         int ret;
14298
14299         if (INTEL_GEN(dev_priv) >= 9)
14300                 return skl_universal_plane_create(dev_priv, pipe,
14301                                                   PLANE_PRIMARY);
14302
14303         plane = intel_plane_alloc();
14304         if (IS_ERR(plane))
14305                 return plane;
14306
14307         plane->pipe = pipe;
14308         /*
14309          * On gen2/3 only plane A can do FBC, but the panel fitter and LVDS
14310          * port is hooked to pipe B. Hence we want plane A feeding pipe B.
14311          */
14312         if (HAS_FBC(dev_priv) && INTEL_GEN(dev_priv) < 4)
14313                 plane->i9xx_plane = (enum i9xx_plane_id) !pipe;
14314         else
14315                 plane->i9xx_plane = (enum i9xx_plane_id) pipe;
14316         plane->id = PLANE_PRIMARY;
14317         plane->frontbuffer_bit = INTEL_FRONTBUFFER(pipe, plane->id);
14318
14319         plane->has_fbc = i9xx_plane_has_fbc(dev_priv, plane->i9xx_plane);
14320         if (plane->has_fbc) {
14321                 struct intel_fbc *fbc = &dev_priv->fbc;
14322
14323                 fbc->possible_framebuffer_bits |= plane->frontbuffer_bit;
14324         }
14325
14326         if (INTEL_GEN(dev_priv) >= 4) {
14327                 formats = i965_primary_formats;
14328                 num_formats = ARRAY_SIZE(i965_primary_formats);
14329                 modifiers = i9xx_format_modifiers;
14330
14331                 plane->max_stride = i9xx_plane_max_stride;
14332                 plane->update_plane = i9xx_update_plane;
14333                 plane->disable_plane = i9xx_disable_plane;
14334                 plane->get_hw_state = i9xx_plane_get_hw_state;
14335                 plane->check_plane = i9xx_plane_check;
14336
14337                 plane_funcs = &i965_plane_funcs;
14338         } else {
14339                 formats = i8xx_primary_formats;
14340                 num_formats = ARRAY_SIZE(i8xx_primary_formats);
14341                 modifiers = i9xx_format_modifiers;
14342
14343                 plane->max_stride = i9xx_plane_max_stride;
14344                 plane->update_plane = i9xx_update_plane;
14345                 plane->disable_plane = i9xx_disable_plane;
14346                 plane->get_hw_state = i9xx_plane_get_hw_state;
14347                 plane->check_plane = i9xx_plane_check;
14348
14349                 plane_funcs = &i8xx_plane_funcs;
14350         }
14351
14352         possible_crtcs = BIT(pipe);
14353
14354         if (INTEL_GEN(dev_priv) >= 5 || IS_G4X(dev_priv))
14355                 ret = drm_universal_plane_init(&dev_priv->drm, &plane->base,
14356                                                possible_crtcs, plane_funcs,
14357                                                formats, num_formats, modifiers,
14358                                                DRM_PLANE_TYPE_PRIMARY,
14359                                                "primary %c", pipe_name(pipe));
14360         else
14361                 ret = drm_universal_plane_init(&dev_priv->drm, &plane->base,
14362                                                possible_crtcs, plane_funcs,
14363                                                formats, num_formats, modifiers,
14364                                                DRM_PLANE_TYPE_PRIMARY,
14365                                                "plane %c",
14366                                                plane_name(plane->i9xx_plane));
14367         if (ret)
14368                 goto fail;
14369
14370         if (IS_CHERRYVIEW(dev_priv) && pipe == PIPE_B) {
14371                 supported_rotations =
14372                         DRM_MODE_ROTATE_0 | DRM_MODE_ROTATE_180 |
14373                         DRM_MODE_REFLECT_X;
14374         } else if (INTEL_GEN(dev_priv) >= 4) {
14375                 supported_rotations =
14376                         DRM_MODE_ROTATE_0 | DRM_MODE_ROTATE_180;
14377         } else {
14378                 supported_rotations = DRM_MODE_ROTATE_0;
14379         }
14380
14381         if (INTEL_GEN(dev_priv) >= 4)
14382                 drm_plane_create_rotation_property(&plane->base,
14383                                                    DRM_MODE_ROTATE_0,
14384                                                    supported_rotations);
14385
14386         drm_plane_helper_add(&plane->base, &intel_plane_helper_funcs);
14387
14388         return plane;
14389
14390 fail:
14391         intel_plane_free(plane);
14392
14393         return ERR_PTR(ret);
14394 }
14395
14396 static struct intel_plane *
14397 intel_cursor_plane_create(struct drm_i915_private *dev_priv,
14398                           enum pipe pipe)
14399 {
14400         unsigned int possible_crtcs;
14401         struct intel_plane *cursor;
14402         int ret;
14403
14404         cursor = intel_plane_alloc();
14405         if (IS_ERR(cursor))
14406                 return cursor;
14407
14408         cursor->pipe = pipe;
14409         cursor->i9xx_plane = (enum i9xx_plane_id) pipe;
14410         cursor->id = PLANE_CURSOR;
14411         cursor->frontbuffer_bit = INTEL_FRONTBUFFER(pipe, cursor->id);
14412
14413         if (IS_I845G(dev_priv) || IS_I865G(dev_priv)) {
14414                 cursor->max_stride = i845_cursor_max_stride;
14415                 cursor->update_plane = i845_update_cursor;
14416                 cursor->disable_plane = i845_disable_cursor;
14417                 cursor->get_hw_state = i845_cursor_get_hw_state;
14418                 cursor->check_plane = i845_check_cursor;
14419         } else {
14420                 cursor->max_stride = i9xx_cursor_max_stride;
14421                 cursor->update_plane = i9xx_update_cursor;
14422                 cursor->disable_plane = i9xx_disable_cursor;
14423                 cursor->get_hw_state = i9xx_cursor_get_hw_state;
14424                 cursor->check_plane = i9xx_check_cursor;
14425         }
14426
14427         cursor->cursor.base = ~0;
14428         cursor->cursor.cntl = ~0;
14429
14430         if (IS_I845G(dev_priv) || IS_I865G(dev_priv) || HAS_CUR_FBC(dev_priv))
14431                 cursor->cursor.size = ~0;
14432
14433         possible_crtcs = BIT(pipe);
14434
14435         ret = drm_universal_plane_init(&dev_priv->drm, &cursor->base,
14436                                        possible_crtcs, &intel_cursor_plane_funcs,
14437                                        intel_cursor_formats,
14438                                        ARRAY_SIZE(intel_cursor_formats),
14439                                        cursor_format_modifiers,
14440                                        DRM_PLANE_TYPE_CURSOR,
14441                                        "cursor %c", pipe_name(pipe));
14442         if (ret)
14443                 goto fail;
14444
14445         if (INTEL_GEN(dev_priv) >= 4)
14446                 drm_plane_create_rotation_property(&cursor->base,
14447                                                    DRM_MODE_ROTATE_0,
14448                                                    DRM_MODE_ROTATE_0 |
14449                                                    DRM_MODE_ROTATE_180);
14450
14451         drm_plane_helper_add(&cursor->base, &intel_plane_helper_funcs);
14452
14453         return cursor;
14454
14455 fail:
14456         intel_plane_free(cursor);
14457
14458         return ERR_PTR(ret);
14459 }
14460
14461 static void intel_crtc_init_scalers(struct intel_crtc *crtc,
14462                                     struct intel_crtc_state *crtc_state)
14463 {
14464         struct intel_crtc_scaler_state *scaler_state =
14465                 &crtc_state->scaler_state;
14466         struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
14467         int i;
14468
14469         crtc->num_scalers = RUNTIME_INFO(dev_priv)->num_scalers[crtc->pipe];
14470         if (!crtc->num_scalers)
14471                 return;
14472
14473         for (i = 0; i < crtc->num_scalers; i++) {
14474                 struct intel_scaler *scaler = &scaler_state->scalers[i];
14475
14476                 scaler->in_use = 0;
14477                 scaler->mode = 0;
14478         }
14479
14480         scaler_state->scaler_id = -1;
14481 }
14482
14483 static int intel_crtc_init(struct drm_i915_private *dev_priv, enum pipe pipe)
14484 {
14485         struct intel_crtc *intel_crtc;
14486         struct intel_crtc_state *crtc_state = NULL;
14487         struct intel_plane *primary = NULL;
14488         struct intel_plane *cursor = NULL;
14489         int sprite, ret;
14490
14491         intel_crtc = kzalloc(sizeof(*intel_crtc), GFP_KERNEL);
14492         if (!intel_crtc)
14493                 return -ENOMEM;
14494
14495         crtc_state = kzalloc(sizeof(*crtc_state), GFP_KERNEL);
14496         if (!crtc_state) {
14497                 ret = -ENOMEM;
14498                 goto fail;
14499         }
14500         intel_crtc->config = crtc_state;
14501         intel_crtc->base.state = &crtc_state->base;
14502         crtc_state->base.crtc = &intel_crtc->base;
14503
14504         primary = intel_primary_plane_create(dev_priv, pipe);
14505         if (IS_ERR(primary)) {
14506                 ret = PTR_ERR(primary);
14507                 goto fail;
14508         }
14509         intel_crtc->plane_ids_mask |= BIT(primary->id);
14510
14511         for_each_sprite(dev_priv, pipe, sprite) {
14512                 struct intel_plane *plane;
14513
14514                 plane = intel_sprite_plane_create(dev_priv, pipe, sprite);
14515                 if (IS_ERR(plane)) {
14516                         ret = PTR_ERR(plane);
14517                         goto fail;
14518                 }
14519                 intel_crtc->plane_ids_mask |= BIT(plane->id);
14520         }
14521
14522         cursor = intel_cursor_plane_create(dev_priv, pipe);
14523         if (IS_ERR(cursor)) {
14524                 ret = PTR_ERR(cursor);
14525                 goto fail;
14526         }
14527         intel_crtc->plane_ids_mask |= BIT(cursor->id);
14528
14529         ret = drm_crtc_init_with_planes(&dev_priv->drm, &intel_crtc->base,
14530                                         &primary->base, &cursor->base,
14531                                         &intel_crtc_funcs,
14532                                         "pipe %c", pipe_name(pipe));
14533         if (ret)
14534                 goto fail;
14535
14536         intel_crtc->pipe = pipe;
14537
14538         /* initialize shared scalers */
14539         intel_crtc_init_scalers(intel_crtc, crtc_state);
14540
14541         BUG_ON(pipe >= ARRAY_SIZE(dev_priv->pipe_to_crtc_mapping) ||
14542                dev_priv->pipe_to_crtc_mapping[pipe] != NULL);
14543         dev_priv->pipe_to_crtc_mapping[pipe] = intel_crtc;
14544
14545         if (INTEL_GEN(dev_priv) < 9) {
14546                 enum i9xx_plane_id i9xx_plane = primary->i9xx_plane;
14547
14548                 BUG_ON(i9xx_plane >= ARRAY_SIZE(dev_priv->plane_to_crtc_mapping) ||
14549                        dev_priv->plane_to_crtc_mapping[i9xx_plane] != NULL);
14550                 dev_priv->plane_to_crtc_mapping[i9xx_plane] = intel_crtc;
14551         }
14552
14553         drm_crtc_helper_add(&intel_crtc->base, &intel_helper_funcs);
14554
14555         intel_color_init(intel_crtc);
14556
14557         WARN_ON(drm_crtc_index(&intel_crtc->base) != intel_crtc->pipe);
14558
14559         return 0;
14560
14561 fail:
14562         /*
14563          * drm_mode_config_cleanup() will free up any
14564          * crtcs/planes already initialized.
14565          */
14566         kfree(crtc_state);
14567         kfree(intel_crtc);
14568
14569         return ret;
14570 }
14571
14572 int intel_get_pipe_from_crtc_id_ioctl(struct drm_device *dev, void *data,
14573                                       struct drm_file *file)
14574 {
14575         struct drm_i915_get_pipe_from_crtc_id *pipe_from_crtc_id = data;
14576         struct drm_crtc *drmmode_crtc;
14577         struct intel_crtc *crtc;
14578
14579         drmmode_crtc = drm_crtc_find(dev, file, pipe_from_crtc_id->crtc_id);
14580         if (!drmmode_crtc)
14581                 return -ENOENT;
14582
14583         crtc = to_intel_crtc(drmmode_crtc);
14584         pipe_from_crtc_id->pipe = crtc->pipe;
14585
14586         return 0;
14587 }
14588
14589 static int intel_encoder_clones(struct intel_encoder *encoder)
14590 {
14591         struct drm_device *dev = encoder->base.dev;
14592         struct intel_encoder *source_encoder;
14593         int index_mask = 0;
14594         int entry = 0;
14595
14596         for_each_intel_encoder(dev, source_encoder) {
14597                 if (encoders_cloneable(encoder, source_encoder))
14598                         index_mask |= (1 << entry);
14599
14600                 entry++;
14601         }
14602
14603         return index_mask;
14604 }
14605
14606 static bool ilk_has_edp_a(struct drm_i915_private *dev_priv)
14607 {
14608         if (!IS_MOBILE(dev_priv))
14609                 return false;
14610
14611         if ((I915_READ(DP_A) & DP_DETECTED) == 0)
14612                 return false;
14613
14614         if (IS_GEN(dev_priv, 5) && (I915_READ(FUSE_STRAP) & ILK_eDP_A_DISABLE))
14615                 return false;
14616
14617         return true;
14618 }
14619
14620 static bool intel_ddi_crt_present(struct drm_i915_private *dev_priv)
14621 {
14622         if (INTEL_GEN(dev_priv) >= 9)
14623                 return false;
14624
14625         if (IS_HSW_ULT(dev_priv) || IS_BDW_ULT(dev_priv))
14626                 return false;
14627
14628         if (HAS_PCH_LPT_H(dev_priv) &&
14629             I915_READ(SFUSE_STRAP) & SFUSE_STRAP_CRT_DISABLED)
14630                 return false;
14631
14632         /* DDI E can't be used if DDI A requires 4 lanes */
14633         if (I915_READ(DDI_BUF_CTL(PORT_A)) & DDI_A_4_LANES)
14634                 return false;
14635
14636         if (!dev_priv->vbt.int_crt_support)
14637                 return false;
14638
14639         return true;
14640 }
14641
14642 void intel_pps_unlock_regs_wa(struct drm_i915_private *dev_priv)
14643 {
14644         int pps_num;
14645         int pps_idx;
14646
14647         if (HAS_DDI(dev_priv))
14648                 return;
14649         /*
14650          * This w/a is needed at least on CPT/PPT, but to be sure apply it
14651          * everywhere where registers can be write protected.
14652          */
14653         if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
14654                 pps_num = 2;
14655         else
14656                 pps_num = 1;
14657
14658         for (pps_idx = 0; pps_idx < pps_num; pps_idx++) {
14659                 u32 val = I915_READ(PP_CONTROL(pps_idx));
14660
14661                 val = (val & ~PANEL_UNLOCK_MASK) | PANEL_UNLOCK_REGS;
14662                 I915_WRITE(PP_CONTROL(pps_idx), val);
14663         }
14664 }
14665
14666 static void intel_pps_init(struct drm_i915_private *dev_priv)
14667 {
14668         if (HAS_PCH_SPLIT(dev_priv) || IS_GEN9_LP(dev_priv))
14669                 dev_priv->pps_mmio_base = PCH_PPS_BASE;
14670         else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
14671                 dev_priv->pps_mmio_base = VLV_PPS_BASE;
14672         else
14673                 dev_priv->pps_mmio_base = PPS_BASE;
14674
14675         intel_pps_unlock_regs_wa(dev_priv);
14676 }
14677
14678 static void intel_setup_outputs(struct drm_i915_private *dev_priv)
14679 {
14680         struct intel_encoder *encoder;
14681         bool dpd_is_edp = false;
14682
14683         intel_pps_init(dev_priv);
14684
14685         if (!HAS_DISPLAY(dev_priv))
14686                 return;
14687
14688         if (IS_ELKHARTLAKE(dev_priv)) {
14689                 intel_ddi_init(dev_priv, PORT_A);
14690                 intel_ddi_init(dev_priv, PORT_B);
14691                 intel_ddi_init(dev_priv, PORT_C);
14692                 icl_dsi_init(dev_priv);
14693         } else if (INTEL_GEN(dev_priv) >= 11) {
14694                 intel_ddi_init(dev_priv, PORT_A);
14695                 intel_ddi_init(dev_priv, PORT_B);
14696                 intel_ddi_init(dev_priv, PORT_C);
14697                 intel_ddi_init(dev_priv, PORT_D);
14698                 intel_ddi_init(dev_priv, PORT_E);
14699                 /*
14700                  * On some ICL SKUs port F is not present. No strap bits for
14701                  * this, so rely on VBT.
14702                  * Work around broken VBTs on SKUs known to have no port F.
14703                  */
14704                 if (IS_ICL_WITH_PORT_F(dev_priv) &&
14705                     intel_bios_is_port_present(dev_priv, PORT_F))
14706                         intel_ddi_init(dev_priv, PORT_F);
14707
14708                 icl_dsi_init(dev_priv);
14709         } else if (IS_GEN9_LP(dev_priv)) {
14710                 /*
14711                  * FIXME: Broxton doesn't support port detection via the
14712                  * DDI_BUF_CTL_A or SFUSE_STRAP registers, find another way to
14713                  * detect the ports.
14714                  */
14715                 intel_ddi_init(dev_priv, PORT_A);
14716                 intel_ddi_init(dev_priv, PORT_B);
14717                 intel_ddi_init(dev_priv, PORT_C);
14718
14719                 vlv_dsi_init(dev_priv);
14720         } else if (HAS_DDI(dev_priv)) {
14721                 int found;
14722
14723                 if (intel_ddi_crt_present(dev_priv))
14724                         intel_crt_init(dev_priv);
14725
14726                 /*
14727                  * Haswell uses DDI functions to detect digital outputs.
14728                  * On SKL pre-D0 the strap isn't connected, so we assume
14729                  * it's there.
14730                  */
14731                 found = I915_READ(DDI_BUF_CTL(PORT_A)) & DDI_INIT_DISPLAY_DETECTED;
14732                 /* WaIgnoreDDIAStrap: skl */
14733                 if (found || IS_GEN9_BC(dev_priv))
14734                         intel_ddi_init(dev_priv, PORT_A);
14735
14736                 /* DDI B, C, D, and F detection is indicated by the SFUSE_STRAP
14737                  * register */
14738                 found = I915_READ(SFUSE_STRAP);
14739
14740                 if (found & SFUSE_STRAP_DDIB_DETECTED)
14741                         intel_ddi_init(dev_priv, PORT_B);
14742                 if (found & SFUSE_STRAP_DDIC_DETECTED)
14743                         intel_ddi_init(dev_priv, PORT_C);
14744                 if (found & SFUSE_STRAP_DDID_DETECTED)
14745                         intel_ddi_init(dev_priv, PORT_D);
14746                 if (found & SFUSE_STRAP_DDIF_DETECTED)
14747                         intel_ddi_init(dev_priv, PORT_F);
14748                 /*
14749                  * On SKL we don't have a way to detect DDI-E so we rely on VBT.
14750                  */
14751                 if (IS_GEN9_BC(dev_priv) &&
14752                     intel_bios_is_port_present(dev_priv, PORT_E))
14753                         intel_ddi_init(dev_priv, PORT_E);
14754
14755         } else if (HAS_PCH_SPLIT(dev_priv)) {
14756                 int found;
14757
14758                 /*
14759                  * intel_edp_init_connector() depends on this completing first,
14760                  * to prevent the registration of both eDP and LVDS and the
14761                  * incorrect sharing of the PPS.
14762                  */
14763                 intel_lvds_init(dev_priv);
14764                 intel_crt_init(dev_priv);
14765
14766                 dpd_is_edp = intel_dp_is_port_edp(dev_priv, PORT_D);
14767
14768                 if (ilk_has_edp_a(dev_priv))
14769                         intel_dp_init(dev_priv, DP_A, PORT_A);
14770
14771                 if (I915_READ(PCH_HDMIB) & SDVO_DETECTED) {
14772                         /* PCH SDVOB multiplex with HDMIB */
14773                         found = intel_sdvo_init(dev_priv, PCH_SDVOB, PORT_B);
14774                         if (!found)
14775                                 intel_hdmi_init(dev_priv, PCH_HDMIB, PORT_B);
14776                         if (!found && (I915_READ(PCH_DP_B) & DP_DETECTED))
14777                                 intel_dp_init(dev_priv, PCH_DP_B, PORT_B);
14778                 }
14779
14780                 if (I915_READ(PCH_HDMIC) & SDVO_DETECTED)
14781                         intel_hdmi_init(dev_priv, PCH_HDMIC, PORT_C);
14782
14783                 if (!dpd_is_edp && I915_READ(PCH_HDMID) & SDVO_DETECTED)
14784                         intel_hdmi_init(dev_priv, PCH_HDMID, PORT_D);
14785
14786                 if (I915_READ(PCH_DP_C) & DP_DETECTED)
14787                         intel_dp_init(dev_priv, PCH_DP_C, PORT_C);
14788
14789                 if (I915_READ(PCH_DP_D) & DP_DETECTED)
14790                         intel_dp_init(dev_priv, PCH_DP_D, PORT_D);
14791         } else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
14792                 bool has_edp, has_port;
14793
14794                 if (IS_VALLEYVIEW(dev_priv) && dev_priv->vbt.int_crt_support)
14795                         intel_crt_init(dev_priv);
14796
14797                 /*
14798                  * The DP_DETECTED bit is the latched state of the DDC
14799                  * SDA pin at boot. However since eDP doesn't require DDC
14800                  * (no way to plug in a DP->HDMI dongle) the DDC pins for
14801                  * eDP ports may have been muxed to an alternate function.
14802                  * Thus we can't rely on the DP_DETECTED bit alone to detect
14803                  * eDP ports. Consult the VBT as well as DP_DETECTED to
14804                  * detect eDP ports.
14805                  *
14806                  * Sadly the straps seem to be missing sometimes even for HDMI
14807                  * ports (eg. on Voyo V3 - CHT x7-Z8700), so check both strap
14808                  * and VBT for the presence of the port. Additionally we can't
14809                  * trust the port type the VBT declares as we've seen at least
14810                  * HDMI ports that the VBT claim are DP or eDP.
14811                  */
14812                 has_edp = intel_dp_is_port_edp(dev_priv, PORT_B);
14813                 has_port = intel_bios_is_port_present(dev_priv, PORT_B);
14814                 if (I915_READ(VLV_DP_B) & DP_DETECTED || has_port)
14815                         has_edp &= intel_dp_init(dev_priv, VLV_DP_B, PORT_B);
14816                 if ((I915_READ(VLV_HDMIB) & SDVO_DETECTED || has_port) && !has_edp)
14817                         intel_hdmi_init(dev_priv, VLV_HDMIB, PORT_B);
14818
14819                 has_edp = intel_dp_is_port_edp(dev_priv, PORT_C);
14820                 has_port = intel_bios_is_port_present(dev_priv, PORT_C);
14821                 if (I915_READ(VLV_DP_C) & DP_DETECTED || has_port)
14822                         has_edp &= intel_dp_init(dev_priv, VLV_DP_C, PORT_C);
14823                 if ((I915_READ(VLV_HDMIC) & SDVO_DETECTED || has_port) && !has_edp)
14824                         intel_hdmi_init(dev_priv, VLV_HDMIC, PORT_C);
14825
14826                 if (IS_CHERRYVIEW(dev_priv)) {
14827                         /*
14828                          * eDP not supported on port D,
14829                          * so no need to worry about it
14830                          */
14831                         has_port = intel_bios_is_port_present(dev_priv, PORT_D);
14832                         if (I915_READ(CHV_DP_D) & DP_DETECTED || has_port)
14833                                 intel_dp_init(dev_priv, CHV_DP_D, PORT_D);
14834                         if (I915_READ(CHV_HDMID) & SDVO_DETECTED || has_port)
14835                                 intel_hdmi_init(dev_priv, CHV_HDMID, PORT_D);
14836                 }
14837
14838                 vlv_dsi_init(dev_priv);
14839         } else if (IS_PINEVIEW(dev_priv)) {
14840                 intel_lvds_init(dev_priv);
14841                 intel_crt_init(dev_priv);
14842         } else if (IS_GEN_RANGE(dev_priv, 3, 4)) {
14843                 bool found = false;
14844
14845                 if (IS_MOBILE(dev_priv))
14846                         intel_lvds_init(dev_priv);
14847
14848                 intel_crt_init(dev_priv);
14849
14850                 if (I915_READ(GEN3_SDVOB) & SDVO_DETECTED) {
14851                         DRM_DEBUG_KMS("probing SDVOB\n");
14852                         found = intel_sdvo_init(dev_priv, GEN3_SDVOB, PORT_B);
14853                         if (!found && IS_G4X(dev_priv)) {
14854                                 DRM_DEBUG_KMS("probing HDMI on SDVOB\n");
14855                                 intel_hdmi_init(dev_priv, GEN4_HDMIB, PORT_B);
14856                         }
14857
14858                         if (!found && IS_G4X(dev_priv))
14859                                 intel_dp_init(dev_priv, DP_B, PORT_B);
14860                 }
14861
14862                 /* Before G4X SDVOC doesn't have its own detect register */
14863
14864                 if (I915_READ(GEN3_SDVOB) & SDVO_DETECTED) {
14865                         DRM_DEBUG_KMS("probing SDVOC\n");
14866                         found = intel_sdvo_init(dev_priv, GEN3_SDVOC, PORT_C);
14867                 }
14868
14869                 if (!found && (I915_READ(GEN3_SDVOC) & SDVO_DETECTED)) {
14870
14871                         if (IS_G4X(dev_priv)) {
14872                                 DRM_DEBUG_KMS("probing HDMI on SDVOC\n");
14873                                 intel_hdmi_init(dev_priv, GEN4_HDMIC, PORT_C);
14874                         }
14875                         if (IS_G4X(dev_priv))
14876                                 intel_dp_init(dev_priv, DP_C, PORT_C);
14877                 }
14878
14879                 if (IS_G4X(dev_priv) && (I915_READ(DP_D) & DP_DETECTED))
14880                         intel_dp_init(dev_priv, DP_D, PORT_D);
14881
14882                 if (SUPPORTS_TV(dev_priv))
14883                         intel_tv_init(dev_priv);
14884         } else if (IS_GEN(dev_priv, 2)) {
14885                 if (IS_I85X(dev_priv))
14886                         intel_lvds_init(dev_priv);
14887
14888                 intel_crt_init(dev_priv);
14889                 intel_dvo_init(dev_priv);
14890         }
14891
14892         intel_psr_init(dev_priv);
14893
14894         for_each_intel_encoder(&dev_priv->drm, encoder) {
14895                 encoder->base.possible_crtcs = encoder->crtc_mask;
14896                 encoder->base.possible_clones =
14897                         intel_encoder_clones(encoder);
14898         }
14899
14900         intel_init_pch_refclk(dev_priv);
14901
14902         drm_helper_move_panel_connectors_to_head(&dev_priv->drm);
14903 }
14904
14905 static void intel_user_framebuffer_destroy(struct drm_framebuffer *fb)
14906 {
14907         struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
14908         struct drm_i915_gem_object *obj = intel_fb_obj(fb);
14909
14910         drm_framebuffer_cleanup(fb);
14911
14912         i915_gem_object_lock(obj);
14913         WARN_ON(!obj->framebuffer_references--);
14914         i915_gem_object_unlock(obj);
14915
14916         i915_gem_object_put(obj);
14917
14918         kfree(intel_fb);
14919 }
14920
14921 static int intel_user_framebuffer_create_handle(struct drm_framebuffer *fb,
14922                                                 struct drm_file *file,
14923                                                 unsigned int *handle)
14924 {
14925         struct drm_i915_gem_object *obj = intel_fb_obj(fb);
14926
14927         if (obj->userptr.mm) {
14928                 DRM_DEBUG("attempting to use a userptr for a framebuffer, denied\n");
14929                 return -EINVAL;
14930         }
14931
14932         return drm_gem_handle_create(file, &obj->base, handle);
14933 }
14934
14935 static int intel_user_framebuffer_dirty(struct drm_framebuffer *fb,
14936                                         struct drm_file *file,
14937                                         unsigned flags, unsigned color,
14938                                         struct drm_clip_rect *clips,
14939                                         unsigned num_clips)
14940 {
14941         struct drm_i915_gem_object *obj = intel_fb_obj(fb);
14942
14943         i915_gem_object_flush_if_display(obj);
14944         intel_fb_obj_flush(obj, ORIGIN_DIRTYFB);
14945
14946         return 0;
14947 }
14948
14949 static const struct drm_framebuffer_funcs intel_fb_funcs = {
14950         .destroy = intel_user_framebuffer_destroy,
14951         .create_handle = intel_user_framebuffer_create_handle,
14952         .dirty = intel_user_framebuffer_dirty,
14953 };
14954
14955 static
14956 u32 intel_fb_pitch_limit(struct drm_i915_private *dev_priv,
14957                          u32 pixel_format, u64 fb_modifier)
14958 {
14959         struct intel_crtc *crtc;
14960         struct intel_plane *plane;
14961
14962         /*
14963          * We assume the primary plane for pipe A has
14964          * the highest stride limits of them all.
14965          */
14966         crtc = intel_get_crtc_for_pipe(dev_priv, PIPE_A);
14967         plane = to_intel_plane(crtc->base.primary);
14968
14969         return plane->max_stride(plane, pixel_format, fb_modifier,
14970                                  DRM_MODE_ROTATE_0);
14971 }
14972
14973 static int intel_framebuffer_init(struct intel_framebuffer *intel_fb,
14974                                   struct drm_i915_gem_object *obj,
14975                                   struct drm_mode_fb_cmd2 *mode_cmd)
14976 {
14977         struct drm_i915_private *dev_priv = to_i915(obj->base.dev);
14978         struct drm_framebuffer *fb = &intel_fb->base;
14979         u32 pitch_limit;
14980         unsigned int tiling, stride;
14981         int ret = -EINVAL;
14982         int i;
14983
14984         i915_gem_object_lock(obj);
14985         obj->framebuffer_references++;
14986         tiling = i915_gem_object_get_tiling(obj);
14987         stride = i915_gem_object_get_stride(obj);
14988         i915_gem_object_unlock(obj);
14989
14990         if (mode_cmd->flags & DRM_MODE_FB_MODIFIERS) {
14991                 /*
14992                  * If there's a fence, enforce that
14993                  * the fb modifier and tiling mode match.
14994                  */
14995                 if (tiling != I915_TILING_NONE &&
14996                     tiling != intel_fb_modifier_to_tiling(mode_cmd->modifier[0])) {
14997                         DRM_DEBUG_KMS("tiling_mode doesn't match fb modifier\n");
14998                         goto err;
14999                 }
15000         } else {
15001                 if (tiling == I915_TILING_X) {
15002                         mode_cmd->modifier[0] = I915_FORMAT_MOD_X_TILED;
15003                 } else if (tiling == I915_TILING_Y) {
15004                         DRM_DEBUG_KMS("No Y tiling for legacy addfb\n");
15005                         goto err;
15006                 }
15007         }
15008
15009         if (!drm_any_plane_has_format(&dev_priv->drm,
15010                                       mode_cmd->pixel_format,
15011                                       mode_cmd->modifier[0])) {
15012                 struct drm_format_name_buf format_name;
15013
15014                 DRM_DEBUG_KMS("unsupported pixel format %s / modifier 0x%llx\n",
15015                               drm_get_format_name(mode_cmd->pixel_format,
15016                                                   &format_name),
15017                               mode_cmd->modifier[0]);
15018                 goto err;
15019         }
15020
15021         /*
15022          * gen2/3 display engine uses the fence if present,
15023          * so the tiling mode must match the fb modifier exactly.
15024          */
15025         if (INTEL_GEN(dev_priv) < 4 &&
15026             tiling != intel_fb_modifier_to_tiling(mode_cmd->modifier[0])) {
15027                 DRM_DEBUG_KMS("tiling_mode must match fb modifier exactly on gen2/3\n");
15028                 goto err;
15029         }
15030
15031         pitch_limit = intel_fb_pitch_limit(dev_priv, mode_cmd->pixel_format,
15032                                            mode_cmd->modifier[0]);
15033         if (mode_cmd->pitches[0] > pitch_limit) {
15034                 DRM_DEBUG_KMS("%s pitch (%u) must be at most %d\n",
15035                               mode_cmd->modifier[0] != DRM_FORMAT_MOD_LINEAR ?
15036                               "tiled" : "linear",
15037                               mode_cmd->pitches[0], pitch_limit);
15038                 goto err;
15039         }
15040
15041         /*
15042          * If there's a fence, enforce that
15043          * the fb pitch and fence stride match.
15044          */
15045         if (tiling != I915_TILING_NONE && mode_cmd->pitches[0] != stride) {
15046                 DRM_DEBUG_KMS("pitch (%d) must match tiling stride (%d)\n",
15047                               mode_cmd->pitches[0], stride);
15048                 goto err;
15049         }
15050
15051         /* FIXME need to adjust LINOFF/TILEOFF accordingly. */
15052         if (mode_cmd->offsets[0] != 0)
15053                 goto err;
15054
15055         drm_helper_mode_fill_fb_struct(&dev_priv->drm, fb, mode_cmd);
15056
15057         for (i = 0; i < fb->format->num_planes; i++) {
15058                 u32 stride_alignment;
15059
15060                 if (mode_cmd->handles[i] != mode_cmd->handles[0]) {
15061                         DRM_DEBUG_KMS("bad plane %d handle\n", i);
15062                         goto err;
15063                 }
15064
15065                 stride_alignment = intel_fb_stride_alignment(fb, i);
15066
15067                 /*
15068                  * Display WA #0531: skl,bxt,kbl,glk
15069                  *
15070                  * Render decompression and plane width > 3840
15071                  * combined with horizontal panning requires the
15072                  * plane stride to be a multiple of 4. We'll just
15073                  * require the entire fb to accommodate that to avoid
15074                  * potential runtime errors at plane configuration time.
15075                  */
15076                 if (IS_GEN(dev_priv, 9) && i == 0 && fb->width > 3840 &&
15077                     is_ccs_modifier(fb->modifier))
15078                         stride_alignment *= 4;
15079
15080                 if (fb->pitches[i] & (stride_alignment - 1)) {
15081                         DRM_DEBUG_KMS("plane %d pitch (%d) must be at least %u byte aligned\n",
15082                                       i, fb->pitches[i], stride_alignment);
15083                         goto err;
15084                 }
15085
15086                 fb->obj[i] = &obj->base;
15087         }
15088
15089         ret = intel_fill_fb_info(dev_priv, fb);
15090         if (ret)
15091                 goto err;
15092
15093         ret = drm_framebuffer_init(&dev_priv->drm, fb, &intel_fb_funcs);
15094         if (ret) {
15095                 DRM_ERROR("framebuffer init failed %d\n", ret);
15096                 goto err;
15097         }
15098
15099         return 0;
15100
15101 err:
15102         i915_gem_object_lock(obj);
15103         obj->framebuffer_references--;
15104         i915_gem_object_unlock(obj);
15105         return ret;
15106 }
15107
15108 static struct drm_framebuffer *
15109 intel_user_framebuffer_create(struct drm_device *dev,
15110                               struct drm_file *filp,
15111                               const struct drm_mode_fb_cmd2 *user_mode_cmd)
15112 {
15113         struct drm_framebuffer *fb;
15114         struct drm_i915_gem_object *obj;
15115         struct drm_mode_fb_cmd2 mode_cmd = *user_mode_cmd;
15116
15117         obj = i915_gem_object_lookup(filp, mode_cmd.handles[0]);
15118         if (!obj)
15119                 return ERR_PTR(-ENOENT);
15120
15121         fb = intel_framebuffer_create(obj, &mode_cmd);
15122         if (IS_ERR(fb))
15123                 i915_gem_object_put(obj);
15124
15125         return fb;
15126 }
15127
15128 static void intel_atomic_state_free(struct drm_atomic_state *state)
15129 {
15130         struct intel_atomic_state *intel_state = to_intel_atomic_state(state);
15131
15132         drm_atomic_state_default_release(state);
15133
15134         i915_sw_fence_fini(&intel_state->commit_ready);
15135
15136         kfree(state);
15137 }
15138
15139 static enum drm_mode_status
15140 intel_mode_valid(struct drm_device *dev,
15141                  const struct drm_display_mode *mode)
15142 {
15143         struct drm_i915_private *dev_priv = to_i915(dev);
15144         int hdisplay_max, htotal_max;
15145         int vdisplay_max, vtotal_max;
15146
15147         /*
15148          * Can't reject DBLSCAN here because Xorg ddxen can add piles
15149          * of DBLSCAN modes to the output's mode list when they detect
15150          * the scaling mode property on the connector. And they don't
15151          * ask the kernel to validate those modes in any way until
15152          * modeset time at which point the client gets a protocol error.
15153          * So in order to not upset those clients we silently ignore the
15154          * DBLSCAN flag on such connectors. For other connectors we will
15155          * reject modes with the DBLSCAN flag in encoder->compute_config().
15156          * And we always reject DBLSCAN modes in connector->mode_valid()
15157          * as we never want such modes on the connector's mode list.
15158          */
15159
15160         if (mode->vscan > 1)
15161                 return MODE_NO_VSCAN;
15162
15163         if (mode->flags & DRM_MODE_FLAG_HSKEW)
15164                 return MODE_H_ILLEGAL;
15165
15166         if (mode->flags & (DRM_MODE_FLAG_CSYNC |
15167                            DRM_MODE_FLAG_NCSYNC |
15168                            DRM_MODE_FLAG_PCSYNC))
15169                 return MODE_HSYNC;
15170
15171         if (mode->flags & (DRM_MODE_FLAG_BCAST |
15172                            DRM_MODE_FLAG_PIXMUX |
15173                            DRM_MODE_FLAG_CLKDIV2))
15174                 return MODE_BAD;
15175
15176         if (INTEL_GEN(dev_priv) >= 9 ||
15177             IS_BROADWELL(dev_priv) || IS_HASWELL(dev_priv)) {
15178                 hdisplay_max = 8192; /* FDI max 4096 handled elsewhere */
15179                 vdisplay_max = 4096;
15180                 htotal_max = 8192;
15181                 vtotal_max = 8192;
15182         } else if (INTEL_GEN(dev_priv) >= 3) {
15183                 hdisplay_max = 4096;
15184                 vdisplay_max = 4096;
15185                 htotal_max = 8192;
15186                 vtotal_max = 8192;
15187         } else {
15188                 hdisplay_max = 2048;
15189                 vdisplay_max = 2048;
15190                 htotal_max = 4096;
15191                 vtotal_max = 4096;
15192         }
15193
15194         if (mode->hdisplay > hdisplay_max ||
15195             mode->hsync_start > htotal_max ||
15196             mode->hsync_end > htotal_max ||
15197             mode->htotal > htotal_max)
15198                 return MODE_H_ILLEGAL;
15199
15200         if (mode->vdisplay > vdisplay_max ||
15201             mode->vsync_start > vtotal_max ||
15202             mode->vsync_end > vtotal_max ||
15203             mode->vtotal > vtotal_max)
15204                 return MODE_V_ILLEGAL;
15205
15206         return MODE_OK;
15207 }
15208
15209 static const struct drm_mode_config_funcs intel_mode_funcs = {
15210         .fb_create = intel_user_framebuffer_create,
15211         .get_format_info = intel_get_format_info,
15212         .output_poll_changed = intel_fbdev_output_poll_changed,
15213         .mode_valid = intel_mode_valid,
15214         .atomic_check = intel_atomic_check,
15215         .atomic_commit = intel_atomic_commit,
15216         .atomic_state_alloc = intel_atomic_state_alloc,
15217         .atomic_state_clear = intel_atomic_state_clear,
15218         .atomic_state_free = intel_atomic_state_free,
15219 };
15220
15221 /**
15222  * intel_init_display_hooks - initialize the display modesetting hooks
15223  * @dev_priv: device private
15224  */
15225 void intel_init_display_hooks(struct drm_i915_private *dev_priv)
15226 {
15227         intel_init_cdclk_hooks(dev_priv);
15228
15229         if (INTEL_GEN(dev_priv) >= 9) {
15230                 dev_priv->display.get_pipe_config = haswell_get_pipe_config;
15231                 dev_priv->display.get_initial_plane_config =
15232                         skylake_get_initial_plane_config;
15233                 dev_priv->display.crtc_compute_clock =
15234                         haswell_crtc_compute_clock;
15235                 dev_priv->display.crtc_enable = haswell_crtc_enable;
15236                 dev_priv->display.crtc_disable = haswell_crtc_disable;
15237         } else if (HAS_DDI(dev_priv)) {
15238                 dev_priv->display.get_pipe_config = haswell_get_pipe_config;
15239                 dev_priv->display.get_initial_plane_config =
15240                         i9xx_get_initial_plane_config;
15241                 dev_priv->display.crtc_compute_clock =
15242                         haswell_crtc_compute_clock;
15243                 dev_priv->display.crtc_enable = haswell_crtc_enable;
15244                 dev_priv->display.crtc_disable = haswell_crtc_disable;
15245         } else if (HAS_PCH_SPLIT(dev_priv)) {
15246                 dev_priv->display.get_pipe_config = ironlake_get_pipe_config;
15247                 dev_priv->display.get_initial_plane_config =
15248                         i9xx_get_initial_plane_config;
15249                 dev_priv->display.crtc_compute_clock =
15250                         ironlake_crtc_compute_clock;
15251                 dev_priv->display.crtc_enable = ironlake_crtc_enable;
15252                 dev_priv->display.crtc_disable = ironlake_crtc_disable;
15253         } else if (IS_CHERRYVIEW(dev_priv)) {
15254                 dev_priv->display.get_pipe_config = i9xx_get_pipe_config;
15255                 dev_priv->display.get_initial_plane_config =
15256                         i9xx_get_initial_plane_config;
15257                 dev_priv->display.crtc_compute_clock = chv_crtc_compute_clock;
15258                 dev_priv->display.crtc_enable = valleyview_crtc_enable;
15259                 dev_priv->display.crtc_disable = i9xx_crtc_disable;
15260         } else if (IS_VALLEYVIEW(dev_priv)) {
15261                 dev_priv->display.get_pipe_config = i9xx_get_pipe_config;
15262                 dev_priv->display.get_initial_plane_config =
15263                         i9xx_get_initial_plane_config;
15264                 dev_priv->display.crtc_compute_clock = vlv_crtc_compute_clock;
15265                 dev_priv->display.crtc_enable = valleyview_crtc_enable;
15266                 dev_priv->display.crtc_disable = i9xx_crtc_disable;
15267         } else if (IS_G4X(dev_priv)) {
15268                 dev_priv->display.get_pipe_config = i9xx_get_pipe_config;
15269                 dev_priv->display.get_initial_plane_config =
15270                         i9xx_get_initial_plane_config;
15271                 dev_priv->display.crtc_compute_clock = g4x_crtc_compute_clock;
15272                 dev_priv->display.crtc_enable = i9xx_crtc_enable;
15273                 dev_priv->display.crtc_disable = i9xx_crtc_disable;
15274         } else if (IS_PINEVIEW(dev_priv)) {
15275                 dev_priv->display.get_pipe_config = i9xx_get_pipe_config;
15276                 dev_priv->display.get_initial_plane_config =
15277                         i9xx_get_initial_plane_config;
15278                 dev_priv->display.crtc_compute_clock = pnv_crtc_compute_clock;
15279                 dev_priv->display.crtc_enable = i9xx_crtc_enable;
15280                 dev_priv->display.crtc_disable = i9xx_crtc_disable;
15281         } else if (!IS_GEN(dev_priv, 2)) {
15282                 dev_priv->display.get_pipe_config = i9xx_get_pipe_config;
15283                 dev_priv->display.get_initial_plane_config =
15284                         i9xx_get_initial_plane_config;
15285                 dev_priv->display.crtc_compute_clock = i9xx_crtc_compute_clock;
15286                 dev_priv->display.crtc_enable = i9xx_crtc_enable;
15287                 dev_priv->display.crtc_disable = i9xx_crtc_disable;
15288         } else {
15289                 dev_priv->display.get_pipe_config = i9xx_get_pipe_config;
15290                 dev_priv->display.get_initial_plane_config =
15291                         i9xx_get_initial_plane_config;
15292                 dev_priv->display.crtc_compute_clock = i8xx_crtc_compute_clock;
15293                 dev_priv->display.crtc_enable = i9xx_crtc_enable;
15294                 dev_priv->display.crtc_disable = i9xx_crtc_disable;
15295         }
15296
15297         if (IS_GEN(dev_priv, 5)) {
15298                 dev_priv->display.fdi_link_train = ironlake_fdi_link_train;
15299         } else if (IS_GEN(dev_priv, 6)) {
15300                 dev_priv->display.fdi_link_train = gen6_fdi_link_train;
15301         } else if (IS_IVYBRIDGE(dev_priv)) {
15302                 /* FIXME: detect B0+ stepping and use auto training */
15303                 dev_priv->display.fdi_link_train = ivb_manual_fdi_link_train;
15304         } else if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv)) {
15305                 dev_priv->display.fdi_link_train = hsw_fdi_link_train;
15306         }
15307
15308         if (INTEL_GEN(dev_priv) >= 9)
15309                 dev_priv->display.update_crtcs = skl_update_crtcs;
15310         else
15311                 dev_priv->display.update_crtcs = intel_update_crtcs;
15312 }
15313
15314 static i915_reg_t i915_vgacntrl_reg(struct drm_i915_private *dev_priv)
15315 {
15316         if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
15317                 return VLV_VGACNTRL;
15318         else if (INTEL_GEN(dev_priv) >= 5)
15319                 return CPU_VGACNTRL;
15320         else
15321                 return VGACNTRL;
15322 }
15323
15324 /* Disable the VGA plane that we never use */
15325 static void i915_disable_vga(struct drm_i915_private *dev_priv)
15326 {
15327         struct pci_dev *pdev = dev_priv->drm.pdev;
15328         u8 sr1;
15329         i915_reg_t vga_reg = i915_vgacntrl_reg(dev_priv);
15330
15331         /* WaEnableVGAAccessThroughIOPort:ctg,elk,ilk,snb,ivb,vlv,hsw */
15332         vga_get_uninterruptible(pdev, VGA_RSRC_LEGACY_IO);
15333         outb(SR01, VGA_SR_INDEX);
15334         sr1 = inb(VGA_SR_DATA);
15335         outb(sr1 | 1<<5, VGA_SR_DATA);
15336         vga_put(pdev, VGA_RSRC_LEGACY_IO);
15337         udelay(300);
15338
15339         I915_WRITE(vga_reg, VGA_DISP_DISABLE);
15340         POSTING_READ(vga_reg);
15341 }
15342
15343 void intel_modeset_init_hw(struct drm_device *dev)
15344 {
15345         struct drm_i915_private *dev_priv = to_i915(dev);
15346
15347         intel_update_cdclk(dev_priv);
15348         intel_dump_cdclk_state(&dev_priv->cdclk.hw, "Current CDCLK");
15349         dev_priv->cdclk.logical = dev_priv->cdclk.actual = dev_priv->cdclk.hw;
15350 }
15351
15352 /*
15353  * Calculate what we think the watermarks should be for the state we've read
15354  * out of the hardware and then immediately program those watermarks so that
15355  * we ensure the hardware settings match our internal state.
15356  *
15357  * We can calculate what we think WM's should be by creating a duplicate of the
15358  * current state (which was constructed during hardware readout) and running it
15359  * through the atomic check code to calculate new watermark values in the
15360  * state object.
15361  */
15362 static void sanitize_watermarks(struct drm_device *dev)
15363 {
15364         struct drm_i915_private *dev_priv = to_i915(dev);
15365         struct drm_atomic_state *state;
15366         struct intel_atomic_state *intel_state;
15367         struct drm_crtc *crtc;
15368         struct drm_crtc_state *cstate;
15369         struct drm_modeset_acquire_ctx ctx;
15370         int ret;
15371         int i;
15372
15373         /* Only supported on platforms that use atomic watermark design */
15374         if (!dev_priv->display.optimize_watermarks)
15375                 return;
15376
15377         /*
15378          * We need to hold connection_mutex before calling duplicate_state so
15379          * that the connector loop is protected.
15380          */
15381         drm_modeset_acquire_init(&ctx, 0);
15382 retry:
15383         ret = drm_modeset_lock_all_ctx(dev, &ctx);
15384         if (ret == -EDEADLK) {
15385                 drm_modeset_backoff(&ctx);
15386                 goto retry;
15387         } else if (WARN_ON(ret)) {
15388                 goto fail;
15389         }
15390
15391         state = drm_atomic_helper_duplicate_state(dev, &ctx);
15392         if (WARN_ON(IS_ERR(state)))
15393                 goto fail;
15394
15395         intel_state = to_intel_atomic_state(state);
15396
15397         /*
15398          * Hardware readout is the only time we don't want to calculate
15399          * intermediate watermarks (since we don't trust the current
15400          * watermarks).
15401          */
15402         if (!HAS_GMCH(dev_priv))
15403                 intel_state->skip_intermediate_wm = true;
15404
15405         ret = intel_atomic_check(dev, state);
15406         if (ret) {
15407                 /*
15408                  * If we fail here, it means that the hardware appears to be
15409                  * programmed in a way that shouldn't be possible, given our
15410                  * understanding of watermark requirements.  This might mean a
15411                  * mistake in the hardware readout code or a mistake in the
15412                  * watermark calculations for a given platform.  Raise a WARN
15413                  * so that this is noticeable.
15414                  *
15415                  * If this actually happens, we'll have to just leave the
15416                  * BIOS-programmed watermarks untouched and hope for the best.
15417                  */
15418                 WARN(true, "Could not determine valid watermarks for inherited state\n");
15419                 goto put_state;
15420         }
15421
15422         /* Write calculated watermark values back */
15423         for_each_new_crtc_in_state(state, crtc, cstate, i) {
15424                 struct intel_crtc_state *cs = to_intel_crtc_state(cstate);
15425
15426                 cs->wm.need_postvbl_update = true;
15427                 dev_priv->display.optimize_watermarks(intel_state, cs);
15428
15429                 to_intel_crtc_state(crtc->state)->wm = cs->wm;
15430         }
15431
15432 put_state:
15433         drm_atomic_state_put(state);
15434 fail:
15435         drm_modeset_drop_locks(&ctx);
15436         drm_modeset_acquire_fini(&ctx);
15437 }
15438
15439 static void intel_update_fdi_pll_freq(struct drm_i915_private *dev_priv)
15440 {
15441         if (IS_GEN(dev_priv, 5)) {
15442                 u32 fdi_pll_clk =
15443                         I915_READ(FDI_PLL_BIOS_0) & FDI_PLL_FB_CLOCK_MASK;
15444
15445                 dev_priv->fdi_pll_freq = (fdi_pll_clk + 2) * 10000;
15446         } else if (IS_GEN(dev_priv, 6) || IS_IVYBRIDGE(dev_priv)) {
15447                 dev_priv->fdi_pll_freq = 270000;
15448         } else {
15449                 return;
15450         }
15451
15452         DRM_DEBUG_DRIVER("FDI PLL freq=%d\n", dev_priv->fdi_pll_freq);
15453 }
15454
15455 static int intel_initial_commit(struct drm_device *dev)
15456 {
15457         struct drm_atomic_state *state = NULL;
15458         struct drm_modeset_acquire_ctx ctx;
15459         struct drm_crtc *crtc;
15460         struct drm_crtc_state *crtc_state;
15461         int ret = 0;
15462
15463         state = drm_atomic_state_alloc(dev);
15464         if (!state)
15465                 return -ENOMEM;
15466
15467         drm_modeset_acquire_init(&ctx, 0);
15468
15469 retry:
15470         state->acquire_ctx = &ctx;
15471
15472         drm_for_each_crtc(crtc, dev) {
15473                 crtc_state = drm_atomic_get_crtc_state(state, crtc);
15474                 if (IS_ERR(crtc_state)) {
15475                         ret = PTR_ERR(crtc_state);
15476                         goto out;
15477                 }
15478
15479                 if (crtc_state->active) {
15480                         ret = drm_atomic_add_affected_planes(state, crtc);
15481                         if (ret)
15482                                 goto out;
15483
15484                         /*
15485                          * FIXME hack to force a LUT update to avoid the
15486                          * plane update forcing the pipe gamma on without
15487                          * having a proper LUT loaded. Remove once we
15488                          * have readout for pipe gamma enable.
15489                          */
15490                         crtc_state->color_mgmt_changed = true;
15491                 }
15492         }
15493
15494         ret = drm_atomic_commit(state);
15495
15496 out:
15497         if (ret == -EDEADLK) {
15498                 drm_atomic_state_clear(state);
15499                 drm_modeset_backoff(&ctx);
15500                 goto retry;
15501         }
15502
15503         drm_atomic_state_put(state);
15504
15505         drm_modeset_drop_locks(&ctx);
15506         drm_modeset_acquire_fini(&ctx);
15507
15508         return ret;
15509 }
15510
15511 int intel_modeset_init(struct drm_device *dev)
15512 {
15513         struct drm_i915_private *dev_priv = to_i915(dev);
15514         struct i915_ggtt *ggtt = &dev_priv->ggtt;
15515         enum pipe pipe;
15516         struct intel_crtc *crtc;
15517         int ret;
15518
15519         dev_priv->modeset_wq = alloc_ordered_workqueue("i915_modeset", 0);
15520
15521         drm_mode_config_init(dev);
15522
15523         dev->mode_config.min_width = 0;
15524         dev->mode_config.min_height = 0;
15525
15526         dev->mode_config.preferred_depth = 24;
15527         dev->mode_config.prefer_shadow = 1;
15528
15529         dev->mode_config.allow_fb_modifiers = true;
15530
15531         dev->mode_config.funcs = &intel_mode_funcs;
15532
15533         init_llist_head(&dev_priv->atomic_helper.free_list);
15534         INIT_WORK(&dev_priv->atomic_helper.free_work,
15535                   intel_atomic_helper_free_state_worker);
15536
15537         intel_init_quirks(dev_priv);
15538
15539         intel_fbc_init(dev_priv);
15540
15541         intel_init_pm(dev_priv);
15542
15543         /*
15544          * There may be no VBT; and if the BIOS enabled SSC we can
15545          * just keep using it to avoid unnecessary flicker.  Whereas if the
15546          * BIOS isn't using it, don't assume it will work even if the VBT
15547          * indicates as much.
15548          */
15549         if (HAS_PCH_IBX(dev_priv) || HAS_PCH_CPT(dev_priv)) {
15550                 bool bios_lvds_use_ssc = !!(I915_READ(PCH_DREF_CONTROL) &
15551                                             DREF_SSC1_ENABLE);
15552
15553                 if (dev_priv->vbt.lvds_use_ssc != bios_lvds_use_ssc) {
15554                         DRM_DEBUG_KMS("SSC %sabled by BIOS, overriding VBT which says %sabled\n",
15555                                      bios_lvds_use_ssc ? "en" : "dis",
15556                                      dev_priv->vbt.lvds_use_ssc ? "en" : "dis");
15557                         dev_priv->vbt.lvds_use_ssc = bios_lvds_use_ssc;
15558                 }
15559         }
15560
15561         /* maximum framebuffer dimensions */
15562         if (IS_GEN(dev_priv, 2)) {
15563                 dev->mode_config.max_width = 2048;
15564                 dev->mode_config.max_height = 2048;
15565         } else if (IS_GEN(dev_priv, 3)) {
15566                 dev->mode_config.max_width = 4096;
15567                 dev->mode_config.max_height = 4096;
15568         } else {
15569                 dev->mode_config.max_width = 8192;
15570                 dev->mode_config.max_height = 8192;
15571         }
15572
15573         if (IS_I845G(dev_priv) || IS_I865G(dev_priv)) {
15574                 dev->mode_config.cursor_width = IS_I845G(dev_priv) ? 64 : 512;
15575                 dev->mode_config.cursor_height = 1023;
15576         } else if (IS_GEN(dev_priv, 2)) {
15577                 dev->mode_config.cursor_width = 64;
15578                 dev->mode_config.cursor_height = 64;
15579         } else {
15580                 dev->mode_config.cursor_width = 256;
15581                 dev->mode_config.cursor_height = 256;
15582         }
15583
15584         dev->mode_config.fb_base = ggtt->gmadr.start;
15585
15586         DRM_DEBUG_KMS("%d display pipe%s available.\n",
15587                       INTEL_INFO(dev_priv)->num_pipes,
15588                       INTEL_INFO(dev_priv)->num_pipes > 1 ? "s" : "");
15589
15590         for_each_pipe(dev_priv, pipe) {
15591                 ret = intel_crtc_init(dev_priv, pipe);
15592                 if (ret) {
15593                         drm_mode_config_cleanup(dev);
15594                         return ret;
15595                 }
15596         }
15597
15598         intel_shared_dpll_init(dev);
15599         intel_update_fdi_pll_freq(dev_priv);
15600
15601         intel_update_czclk(dev_priv);
15602         intel_modeset_init_hw(dev);
15603
15604         intel_hdcp_component_init(dev_priv);
15605
15606         if (dev_priv->max_cdclk_freq == 0)
15607                 intel_update_max_cdclk(dev_priv);
15608
15609         /* Just disable it once at startup */
15610         i915_disable_vga(dev_priv);
15611         intel_setup_outputs(dev_priv);
15612
15613         drm_modeset_lock_all(dev);
15614         intel_modeset_setup_hw_state(dev, dev->mode_config.acquire_ctx);
15615         drm_modeset_unlock_all(dev);
15616
15617         for_each_intel_crtc(dev, crtc) {
15618                 struct intel_initial_plane_config plane_config = {};
15619
15620                 if (!crtc->active)
15621                         continue;
15622
15623                 /*
15624                  * Note that reserving the BIOS fb up front prevents us
15625                  * from stuffing other stolen allocations like the ring
15626                  * on top.  This prevents some ugliness at boot time, and
15627                  * can even allow for smooth boot transitions if the BIOS
15628                  * fb is large enough for the active pipe configuration.
15629                  */
15630                 dev_priv->display.get_initial_plane_config(crtc,
15631                                                            &plane_config);
15632
15633                 /*
15634                  * If the fb is shared between multiple heads, we'll
15635                  * just get the first one.
15636                  */
15637                 intel_find_initial_plane_obj(crtc, &plane_config);
15638         }
15639
15640         /*
15641          * Make sure hardware watermarks really match the state we read out.
15642          * Note that we need to do this after reconstructing the BIOS fb's
15643          * since the watermark calculation done here will use pstate->fb.
15644          */
15645         if (!HAS_GMCH(dev_priv))
15646                 sanitize_watermarks(dev);
15647
15648         /*
15649          * Force all active planes to recompute their states. So that on
15650          * mode_setcrtc after probe, all the intel_plane_state variables
15651          * are already calculated and there is no assert_plane warnings
15652          * during bootup.
15653          */
15654         ret = intel_initial_commit(dev);
15655         if (ret)
15656                 DRM_DEBUG_KMS("Initial commit in probe failed.\n");
15657
15658         return 0;
15659 }
15660
15661 void i830_enable_pipe(struct drm_i915_private *dev_priv, enum pipe pipe)
15662 {
15663         struct intel_crtc *crtc = intel_get_crtc_for_pipe(dev_priv, pipe);
15664         /* 640x480@60Hz, ~25175 kHz */
15665         struct dpll clock = {
15666                 .m1 = 18,
15667                 .m2 = 7,
15668                 .p1 = 13,
15669                 .p2 = 4,
15670                 .n = 2,
15671         };
15672         u32 dpll, fp;
15673         int i;
15674
15675         WARN_ON(i9xx_calc_dpll_params(48000, &clock) != 25154);
15676
15677         DRM_DEBUG_KMS("enabling pipe %c due to force quirk (vco=%d dot=%d)\n",
15678                       pipe_name(pipe), clock.vco, clock.dot);
15679
15680         fp = i9xx_dpll_compute_fp(&clock);
15681         dpll = DPLL_DVO_2X_MODE |
15682                 DPLL_VGA_MODE_DIS |
15683                 ((clock.p1 - 2) << DPLL_FPA01_P1_POST_DIV_SHIFT) |
15684                 PLL_P2_DIVIDE_BY_4 |
15685                 PLL_REF_INPUT_DREFCLK |
15686                 DPLL_VCO_ENABLE;
15687
15688         I915_WRITE(FP0(pipe), fp);
15689         I915_WRITE(FP1(pipe), fp);
15690
15691         I915_WRITE(HTOTAL(pipe), (640 - 1) | ((800 - 1) << 16));
15692         I915_WRITE(HBLANK(pipe), (640 - 1) | ((800 - 1) << 16));
15693         I915_WRITE(HSYNC(pipe), (656 - 1) | ((752 - 1) << 16));
15694         I915_WRITE(VTOTAL(pipe), (480 - 1) | ((525 - 1) << 16));
15695         I915_WRITE(VBLANK(pipe), (480 - 1) | ((525 - 1) << 16));
15696         I915_WRITE(VSYNC(pipe), (490 - 1) | ((492 - 1) << 16));
15697         I915_WRITE(PIPESRC(pipe), ((640 - 1) << 16) | (480 - 1));
15698
15699         /*
15700          * Apparently we need to have VGA mode enabled prior to changing
15701          * the P1/P2 dividers. Otherwise the DPLL will keep using the old
15702          * dividers, even though the register value does change.
15703          */
15704         I915_WRITE(DPLL(pipe), dpll & ~DPLL_VGA_MODE_DIS);
15705         I915_WRITE(DPLL(pipe), dpll);
15706
15707         /* Wait for the clocks to stabilize. */
15708         POSTING_READ(DPLL(pipe));
15709         udelay(150);
15710
15711         /* The pixel multiplier can only be updated once the
15712          * DPLL is enabled and the clocks are stable.
15713          *
15714          * So write it again.
15715          */
15716         I915_WRITE(DPLL(pipe), dpll);
15717
15718         /* We do this three times for luck */
15719         for (i = 0; i < 3 ; i++) {
15720                 I915_WRITE(DPLL(pipe), dpll);
15721                 POSTING_READ(DPLL(pipe));
15722                 udelay(150); /* wait for warmup */
15723         }
15724
15725         I915_WRITE(PIPECONF(pipe), PIPECONF_ENABLE | PIPECONF_PROGRESSIVE);
15726         POSTING_READ(PIPECONF(pipe));
15727
15728         intel_wait_for_pipe_scanline_moving(crtc);
15729 }
15730
15731 void i830_disable_pipe(struct drm_i915_private *dev_priv, enum pipe pipe)
15732 {
15733         struct intel_crtc *crtc = intel_get_crtc_for_pipe(dev_priv, pipe);
15734
15735         DRM_DEBUG_KMS("disabling pipe %c due to force quirk\n",
15736                       pipe_name(pipe));
15737
15738         WARN_ON(I915_READ(DSPCNTR(PLANE_A)) & DISPLAY_PLANE_ENABLE);
15739         WARN_ON(I915_READ(DSPCNTR(PLANE_B)) & DISPLAY_PLANE_ENABLE);
15740         WARN_ON(I915_READ(DSPCNTR(PLANE_C)) & DISPLAY_PLANE_ENABLE);
15741         WARN_ON(I915_READ(CURCNTR(PIPE_A)) & MCURSOR_MODE);
15742         WARN_ON(I915_READ(CURCNTR(PIPE_B)) & MCURSOR_MODE);
15743
15744         I915_WRITE(PIPECONF(pipe), 0);
15745         POSTING_READ(PIPECONF(pipe));
15746
15747         intel_wait_for_pipe_scanline_stopped(crtc);
15748
15749         I915_WRITE(DPLL(pipe), DPLL_VGA_MODE_DIS);
15750         POSTING_READ(DPLL(pipe));
15751 }
15752
15753 static void
15754 intel_sanitize_plane_mapping(struct drm_i915_private *dev_priv)
15755 {
15756         struct intel_crtc *crtc;
15757
15758         if (INTEL_GEN(dev_priv) >= 4)
15759                 return;
15760
15761         for_each_intel_crtc(&dev_priv->drm, crtc) {
15762                 struct intel_plane *plane =
15763                         to_intel_plane(crtc->base.primary);
15764                 struct intel_crtc *plane_crtc;
15765                 enum pipe pipe;
15766
15767                 if (!plane->get_hw_state(plane, &pipe))
15768                         continue;
15769
15770                 if (pipe == crtc->pipe)
15771                         continue;
15772
15773                 DRM_DEBUG_KMS("[PLANE:%d:%s] attached to the wrong pipe, disabling plane\n",
15774                               plane->base.base.id, plane->base.name);
15775
15776                 plane_crtc = intel_get_crtc_for_pipe(dev_priv, pipe);
15777                 intel_plane_disable_noatomic(plane_crtc, plane);
15778         }
15779 }
15780
15781 static bool intel_crtc_has_encoders(struct intel_crtc *crtc)
15782 {
15783         struct drm_device *dev = crtc->base.dev;
15784         struct intel_encoder *encoder;
15785
15786         for_each_encoder_on_crtc(dev, &crtc->base, encoder)
15787                 return true;
15788
15789         return false;
15790 }
15791
15792 static struct intel_connector *intel_encoder_find_connector(struct intel_encoder *encoder)
15793 {
15794         struct drm_device *dev = encoder->base.dev;
15795         struct intel_connector *connector;
15796
15797         for_each_connector_on_encoder(dev, &encoder->base, connector)
15798                 return connector;
15799
15800         return NULL;
15801 }
15802
15803 static bool has_pch_trancoder(struct drm_i915_private *dev_priv,
15804                               enum pipe pch_transcoder)
15805 {
15806         return HAS_PCH_IBX(dev_priv) || HAS_PCH_CPT(dev_priv) ||
15807                 (HAS_PCH_LPT_H(dev_priv) && pch_transcoder == PIPE_A);
15808 }
15809
15810 static void intel_sanitize_crtc(struct intel_crtc *crtc,
15811                                 struct drm_modeset_acquire_ctx *ctx)
15812 {
15813         struct drm_device *dev = crtc->base.dev;
15814         struct drm_i915_private *dev_priv = to_i915(dev);
15815         struct intel_crtc_state *crtc_state = to_intel_crtc_state(crtc->base.state);
15816         enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
15817
15818         /* Clear any frame start delays used for debugging left by the BIOS */
15819         if (crtc->active && !transcoder_is_dsi(cpu_transcoder)) {
15820                 i915_reg_t reg = PIPECONF(cpu_transcoder);
15821
15822                 I915_WRITE(reg,
15823                            I915_READ(reg) & ~PIPECONF_FRAME_START_DELAY_MASK);
15824         }
15825
15826         if (crtc_state->base.active) {
15827                 struct intel_plane *plane;
15828
15829                 /* Disable everything but the primary plane */
15830                 for_each_intel_plane_on_crtc(dev, crtc, plane) {
15831                         const struct intel_plane_state *plane_state =
15832                                 to_intel_plane_state(plane->base.state);
15833
15834                         if (plane_state->base.visible &&
15835                             plane->base.type != DRM_PLANE_TYPE_PRIMARY)
15836                                 intel_plane_disable_noatomic(crtc, plane);
15837                 }
15838
15839                 /*
15840                  * Disable any background color set by the BIOS, but enable the
15841                  * gamma and CSC to match how we program our planes.
15842                  */
15843                 if (INTEL_GEN(dev_priv) >= 9)
15844                         I915_WRITE(SKL_BOTTOM_COLOR(crtc->pipe),
15845                                    SKL_BOTTOM_COLOR_GAMMA_ENABLE |
15846                                    SKL_BOTTOM_COLOR_CSC_ENABLE);
15847         }
15848
15849         /* Adjust the state of the output pipe according to whether we
15850          * have active connectors/encoders. */
15851         if (crtc_state->base.active && !intel_crtc_has_encoders(crtc))
15852                 intel_crtc_disable_noatomic(&crtc->base, ctx);
15853
15854         if (crtc_state->base.active || HAS_GMCH(dev_priv)) {
15855                 /*
15856                  * We start out with underrun reporting disabled to avoid races.
15857                  * For correct bookkeeping mark this on active crtcs.
15858                  *
15859                  * Also on gmch platforms we dont have any hardware bits to
15860                  * disable the underrun reporting. Which means we need to start
15861                  * out with underrun reporting disabled also on inactive pipes,
15862                  * since otherwise we'll complain about the garbage we read when
15863                  * e.g. coming up after runtime pm.
15864                  *
15865                  * No protection against concurrent access is required - at
15866                  * worst a fifo underrun happens which also sets this to false.
15867                  */
15868                 crtc->cpu_fifo_underrun_disabled = true;
15869                 /*
15870                  * We track the PCH trancoder underrun reporting state
15871                  * within the crtc. With crtc for pipe A housing the underrun
15872                  * reporting state for PCH transcoder A, crtc for pipe B housing
15873                  * it for PCH transcoder B, etc. LPT-H has only PCH transcoder A,
15874                  * and marking underrun reporting as disabled for the non-existing
15875                  * PCH transcoders B and C would prevent enabling the south
15876                  * error interrupt (see cpt_can_enable_serr_int()).
15877                  */
15878                 if (has_pch_trancoder(dev_priv, crtc->pipe))
15879                         crtc->pch_fifo_underrun_disabled = true;
15880         }
15881 }
15882
15883 static bool has_bogus_dpll_config(const struct intel_crtc_state *crtc_state)
15884 {
15885         struct drm_i915_private *dev_priv = to_i915(crtc_state->base.crtc->dev);
15886
15887         /*
15888          * Some SNB BIOSen (eg. ASUS K53SV) are known to misprogram
15889          * the hardware when a high res displays plugged in. DPLL P
15890          * divider is zero, and the pipe timings are bonkers. We'll
15891          * try to disable everything in that case.
15892          *
15893          * FIXME would be nice to be able to sanitize this state
15894          * without several WARNs, but for now let's take the easy
15895          * road.
15896          */
15897         return IS_GEN(dev_priv, 6) &&
15898                 crtc_state->base.active &&
15899                 crtc_state->shared_dpll &&
15900                 crtc_state->port_clock == 0;
15901 }
15902
15903 static void intel_sanitize_encoder(struct intel_encoder *encoder)
15904 {
15905         struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
15906         struct intel_connector *connector;
15907         struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc);
15908         struct intel_crtc_state *crtc_state = crtc ?
15909                 to_intel_crtc_state(crtc->base.state) : NULL;
15910
15911         /* We need to check both for a crtc link (meaning that the
15912          * encoder is active and trying to read from a pipe) and the
15913          * pipe itself being active. */
15914         bool has_active_crtc = crtc_state &&
15915                 crtc_state->base.active;
15916
15917         if (crtc_state && has_bogus_dpll_config(crtc_state)) {
15918                 DRM_DEBUG_KMS("BIOS has misprogrammed the hardware. Disabling pipe %c\n",
15919                               pipe_name(crtc->pipe));
15920                 has_active_crtc = false;
15921         }
15922
15923         connector = intel_encoder_find_connector(encoder);
15924         if (connector && !has_active_crtc) {
15925                 DRM_DEBUG_KMS("[ENCODER:%d:%s] has active connectors but no active pipe!\n",
15926                               encoder->base.base.id,
15927                               encoder->base.name);
15928
15929                 /* Connector is active, but has no active pipe. This is
15930                  * fallout from our resume register restoring. Disable
15931                  * the encoder manually again. */
15932                 if (crtc_state) {
15933                         struct drm_encoder *best_encoder;
15934
15935                         DRM_DEBUG_KMS("[ENCODER:%d:%s] manually disabled\n",
15936                                       encoder->base.base.id,
15937                                       encoder->base.name);
15938
15939                         /* avoid oopsing in case the hooks consult best_encoder */
15940                         best_encoder = connector->base.state->best_encoder;
15941                         connector->base.state->best_encoder = &encoder->base;
15942
15943                         if (encoder->disable)
15944                                 encoder->disable(encoder, crtc_state,
15945                                                  connector->base.state);
15946                         if (encoder->post_disable)
15947                                 encoder->post_disable(encoder, crtc_state,
15948                                                       connector->base.state);
15949
15950                         connector->base.state->best_encoder = best_encoder;
15951                 }
15952                 encoder->base.crtc = NULL;
15953
15954                 /* Inconsistent output/port/pipe state happens presumably due to
15955                  * a bug in one of the get_hw_state functions. Or someplace else
15956                  * in our code, like the register restore mess on resume. Clamp
15957                  * things to off as a safer default. */
15958
15959                 connector->base.dpms = DRM_MODE_DPMS_OFF;
15960                 connector->base.encoder = NULL;
15961         }
15962
15963         /* notify opregion of the sanitized encoder state */
15964         intel_opregion_notify_encoder(encoder, connector && has_active_crtc);
15965
15966         if (INTEL_GEN(dev_priv) >= 11)
15967                 icl_sanitize_encoder_pll_mapping(encoder);
15968 }
15969
15970 void i915_redisable_vga_power_on(struct drm_i915_private *dev_priv)
15971 {
15972         i915_reg_t vga_reg = i915_vgacntrl_reg(dev_priv);
15973
15974         if (!(I915_READ(vga_reg) & VGA_DISP_DISABLE)) {
15975                 DRM_DEBUG_KMS("Something enabled VGA plane, disabling it\n");
15976                 i915_disable_vga(dev_priv);
15977         }
15978 }
15979
15980 void i915_redisable_vga(struct drm_i915_private *dev_priv)
15981 {
15982         intel_wakeref_t wakeref;
15983
15984         /*
15985          * This function can be called both from intel_modeset_setup_hw_state or
15986          * at a very early point in our resume sequence, where the power well
15987          * structures are not yet restored. Since this function is at a very
15988          * paranoid "someone might have enabled VGA while we were not looking"
15989          * level, just check if the power well is enabled instead of trying to
15990          * follow the "don't touch the power well if we don't need it" policy
15991          * the rest of the driver uses.
15992          */
15993         wakeref = intel_display_power_get_if_enabled(dev_priv,
15994                                                      POWER_DOMAIN_VGA);
15995         if (!wakeref)
15996                 return;
15997
15998         i915_redisable_vga_power_on(dev_priv);
15999
16000         intel_display_power_put(dev_priv, POWER_DOMAIN_VGA, wakeref);
16001 }
16002
16003 /* FIXME read out full plane state for all planes */
16004 static void readout_plane_state(struct drm_i915_private *dev_priv)
16005 {
16006         struct intel_plane *plane;
16007         struct intel_crtc *crtc;
16008
16009         for_each_intel_plane(&dev_priv->drm, plane) {
16010                 struct intel_plane_state *plane_state =
16011                         to_intel_plane_state(plane->base.state);
16012                 struct intel_crtc_state *crtc_state;
16013                 enum pipe pipe = PIPE_A;
16014                 bool visible;
16015
16016                 visible = plane->get_hw_state(plane, &pipe);
16017
16018                 crtc = intel_get_crtc_for_pipe(dev_priv, pipe);
16019                 crtc_state = to_intel_crtc_state(crtc->base.state);
16020
16021                 intel_set_plane_visible(crtc_state, plane_state, visible);
16022
16023                 DRM_DEBUG_KMS("[PLANE:%d:%s] hw state readout: %s, pipe %c\n",
16024                               plane->base.base.id, plane->base.name,
16025                               enableddisabled(visible), pipe_name(pipe));
16026         }
16027
16028         for_each_intel_crtc(&dev_priv->drm, crtc) {
16029                 struct intel_crtc_state *crtc_state =
16030                         to_intel_crtc_state(crtc->base.state);
16031
16032                 fixup_active_planes(crtc_state);
16033         }
16034 }
16035
16036 static void intel_modeset_readout_hw_state(struct drm_device *dev)
16037 {
16038         struct drm_i915_private *dev_priv = to_i915(dev);
16039         enum pipe pipe;
16040         struct intel_crtc *crtc;
16041         struct intel_encoder *encoder;
16042         struct intel_connector *connector;
16043         struct drm_connector_list_iter conn_iter;
16044         int i;
16045
16046         dev_priv->active_crtcs = 0;
16047
16048         for_each_intel_crtc(dev, crtc) {
16049                 struct intel_crtc_state *crtc_state =
16050                         to_intel_crtc_state(crtc->base.state);
16051
16052                 __drm_atomic_helper_crtc_destroy_state(&crtc_state->base);
16053                 memset(crtc_state, 0, sizeof(*crtc_state));
16054                 crtc_state->base.crtc = &crtc->base;
16055
16056                 crtc_state->base.active = crtc_state->base.enable =
16057                         dev_priv->display.get_pipe_config(crtc, crtc_state);
16058
16059                 crtc->base.enabled = crtc_state->base.enable;
16060                 crtc->active = crtc_state->base.active;
16061
16062                 if (crtc_state->base.active)
16063                         dev_priv->active_crtcs |= 1 << crtc->pipe;
16064
16065                 DRM_DEBUG_KMS("[CRTC:%d:%s] hw state readout: %s\n",
16066                               crtc->base.base.id, crtc->base.name,
16067                               enableddisabled(crtc_state->base.active));
16068         }
16069
16070         readout_plane_state(dev_priv);
16071
16072         for (i = 0; i < dev_priv->num_shared_dpll; i++) {
16073                 struct intel_shared_dpll *pll = &dev_priv->shared_dplls[i];
16074
16075                 pll->on = pll->info->funcs->get_hw_state(dev_priv, pll,
16076                                                         &pll->state.hw_state);
16077                 pll->state.crtc_mask = 0;
16078                 for_each_intel_crtc(dev, crtc) {
16079                         struct intel_crtc_state *crtc_state =
16080                                 to_intel_crtc_state(crtc->base.state);
16081
16082                         if (crtc_state->base.active &&
16083                             crtc_state->shared_dpll == pll)
16084                                 pll->state.crtc_mask |= 1 << crtc->pipe;
16085                 }
16086                 pll->active_mask = pll->state.crtc_mask;
16087
16088                 DRM_DEBUG_KMS("%s hw state readout: crtc_mask 0x%08x, on %i\n",
16089                               pll->info->name, pll->state.crtc_mask, pll->on);
16090         }
16091
16092         for_each_intel_encoder(dev, encoder) {
16093                 pipe = 0;
16094
16095                 if (encoder->get_hw_state(encoder, &pipe)) {
16096                         struct intel_crtc_state *crtc_state;
16097
16098                         crtc = intel_get_crtc_for_pipe(dev_priv, pipe);
16099                         crtc_state = to_intel_crtc_state(crtc->base.state);
16100
16101                         encoder->base.crtc = &crtc->base;
16102                         encoder->get_config(encoder, crtc_state);
16103                 } else {
16104                         encoder->base.crtc = NULL;
16105                 }
16106
16107                 DRM_DEBUG_KMS("[ENCODER:%d:%s] hw state readout: %s, pipe %c\n",
16108                               encoder->base.base.id, encoder->base.name,
16109                               enableddisabled(encoder->base.crtc),
16110                               pipe_name(pipe));
16111         }
16112
16113         drm_connector_list_iter_begin(dev, &conn_iter);
16114         for_each_intel_connector_iter(connector, &conn_iter) {
16115                 if (connector->get_hw_state(connector)) {
16116                         connector->base.dpms = DRM_MODE_DPMS_ON;
16117
16118                         encoder = connector->encoder;
16119                         connector->base.encoder = &encoder->base;
16120
16121                         if (encoder->base.crtc &&
16122                             encoder->base.crtc->state->active) {
16123                                 /*
16124                                  * This has to be done during hardware readout
16125                                  * because anything calling .crtc_disable may
16126                                  * rely on the connector_mask being accurate.
16127                                  */
16128                                 encoder->base.crtc->state->connector_mask |=
16129                                         drm_connector_mask(&connector->base);
16130                                 encoder->base.crtc->state->encoder_mask |=
16131                                         drm_encoder_mask(&encoder->base);
16132                         }
16133
16134                 } else {
16135                         connector->base.dpms = DRM_MODE_DPMS_OFF;
16136                         connector->base.encoder = NULL;
16137                 }
16138                 DRM_DEBUG_KMS("[CONNECTOR:%d:%s] hw state readout: %s\n",
16139                               connector->base.base.id, connector->base.name,
16140                               enableddisabled(connector->base.encoder));
16141         }
16142         drm_connector_list_iter_end(&conn_iter);
16143
16144         for_each_intel_crtc(dev, crtc) {
16145                 struct intel_crtc_state *crtc_state =
16146                         to_intel_crtc_state(crtc->base.state);
16147                 int min_cdclk = 0;
16148
16149                 memset(&crtc->base.mode, 0, sizeof(crtc->base.mode));
16150                 if (crtc_state->base.active) {
16151                         intel_mode_from_pipe_config(&crtc->base.mode, crtc_state);
16152                         crtc->base.mode.hdisplay = crtc_state->pipe_src_w;
16153                         crtc->base.mode.vdisplay = crtc_state->pipe_src_h;
16154                         intel_mode_from_pipe_config(&crtc_state->base.adjusted_mode, crtc_state);
16155                         WARN_ON(drm_atomic_set_mode_for_crtc(crtc->base.state, &crtc->base.mode));
16156
16157                         /*
16158                          * The initial mode needs to be set in order to keep
16159                          * the atomic core happy. It wants a valid mode if the
16160                          * crtc's enabled, so we do the above call.
16161                          *
16162                          * But we don't set all the derived state fully, hence
16163                          * set a flag to indicate that a full recalculation is
16164                          * needed on the next commit.
16165                          */
16166                         crtc_state->base.mode.private_flags = I915_MODE_FLAG_INHERITED;
16167
16168                         intel_crtc_compute_pixel_rate(crtc_state);
16169
16170                         if (dev_priv->display.modeset_calc_cdclk) {
16171                                 min_cdclk = intel_crtc_compute_min_cdclk(crtc_state);
16172                                 if (WARN_ON(min_cdclk < 0))
16173                                         min_cdclk = 0;
16174                         }
16175
16176                         drm_calc_timestamping_constants(&crtc->base,
16177                                                         &crtc_state->base.adjusted_mode);
16178                         update_scanline_offset(crtc_state);
16179                 }
16180
16181                 dev_priv->min_cdclk[crtc->pipe] = min_cdclk;
16182                 dev_priv->min_voltage_level[crtc->pipe] =
16183                         crtc_state->min_voltage_level;
16184
16185                 intel_pipe_config_sanity_check(dev_priv, crtc_state);
16186         }
16187 }
16188
16189 static void
16190 get_encoder_power_domains(struct drm_i915_private *dev_priv)
16191 {
16192         struct intel_encoder *encoder;
16193
16194         for_each_intel_encoder(&dev_priv->drm, encoder) {
16195                 struct intel_crtc_state *crtc_state;
16196
16197                 if (!encoder->get_power_domains)
16198                         continue;
16199
16200                 /*
16201                  * MST-primary and inactive encoders don't have a crtc state
16202                  * and neither of these require any power domain references.
16203                  */
16204                 if (!encoder->base.crtc)
16205                         continue;
16206
16207                 crtc_state = to_intel_crtc_state(encoder->base.crtc->state);
16208                 encoder->get_power_domains(encoder, crtc_state);
16209         }
16210 }
16211
16212 static void intel_early_display_was(struct drm_i915_private *dev_priv)
16213 {
16214         /* Display WA #1185 WaDisableDARBFClkGating:cnl,glk */
16215         if (IS_CANNONLAKE(dev_priv) || IS_GEMINILAKE(dev_priv))
16216                 I915_WRITE(GEN9_CLKGATE_DIS_0, I915_READ(GEN9_CLKGATE_DIS_0) |
16217                            DARBF_GATING_DIS);
16218
16219         if (IS_HASWELL(dev_priv)) {
16220                 /*
16221                  * WaRsPkgCStateDisplayPMReq:hsw
16222                  * System hang if this isn't done before disabling all planes!
16223                  */
16224                 I915_WRITE(CHICKEN_PAR1_1,
16225                            I915_READ(CHICKEN_PAR1_1) | FORCE_ARB_IDLE_PLANES);
16226         }
16227 }
16228
16229 static void ibx_sanitize_pch_hdmi_port(struct drm_i915_private *dev_priv,
16230                                        enum port port, i915_reg_t hdmi_reg)
16231 {
16232         u32 val = I915_READ(hdmi_reg);
16233
16234         if (val & SDVO_ENABLE ||
16235             (val & SDVO_PIPE_SEL_MASK) == SDVO_PIPE_SEL(PIPE_A))
16236                 return;
16237
16238         DRM_DEBUG_KMS("Sanitizing transcoder select for HDMI %c\n",
16239                       port_name(port));
16240
16241         val &= ~SDVO_PIPE_SEL_MASK;
16242         val |= SDVO_PIPE_SEL(PIPE_A);
16243
16244         I915_WRITE(hdmi_reg, val);
16245 }
16246
16247 static void ibx_sanitize_pch_dp_port(struct drm_i915_private *dev_priv,
16248                                      enum port port, i915_reg_t dp_reg)
16249 {
16250         u32 val = I915_READ(dp_reg);
16251
16252         if (val & DP_PORT_EN ||
16253             (val & DP_PIPE_SEL_MASK) == DP_PIPE_SEL(PIPE_A))
16254                 return;
16255
16256         DRM_DEBUG_KMS("Sanitizing transcoder select for DP %c\n",
16257                       port_name(port));
16258
16259         val &= ~DP_PIPE_SEL_MASK;
16260         val |= DP_PIPE_SEL(PIPE_A);
16261
16262         I915_WRITE(dp_reg, val);
16263 }
16264
16265 static void ibx_sanitize_pch_ports(struct drm_i915_private *dev_priv)
16266 {
16267         /*
16268          * The BIOS may select transcoder B on some of the PCH
16269          * ports even it doesn't enable the port. This would trip
16270          * assert_pch_dp_disabled() and assert_pch_hdmi_disabled().
16271          * Sanitize the transcoder select bits to prevent that. We
16272          * assume that the BIOS never actually enabled the port,
16273          * because if it did we'd actually have to toggle the port
16274          * on and back off to make the transcoder A select stick
16275          * (see. intel_dp_link_down(), intel_disable_hdmi(),
16276          * intel_disable_sdvo()).
16277          */
16278         ibx_sanitize_pch_dp_port(dev_priv, PORT_B, PCH_DP_B);
16279         ibx_sanitize_pch_dp_port(dev_priv, PORT_C, PCH_DP_C);
16280         ibx_sanitize_pch_dp_port(dev_priv, PORT_D, PCH_DP_D);
16281
16282         /* PCH SDVOB multiplex with HDMIB */
16283         ibx_sanitize_pch_hdmi_port(dev_priv, PORT_B, PCH_HDMIB);
16284         ibx_sanitize_pch_hdmi_port(dev_priv, PORT_C, PCH_HDMIC);
16285         ibx_sanitize_pch_hdmi_port(dev_priv, PORT_D, PCH_HDMID);
16286 }
16287
16288 /* Scan out the current hw modeset state,
16289  * and sanitizes it to the current state
16290  */
16291 static void
16292 intel_modeset_setup_hw_state(struct drm_device *dev,
16293                              struct drm_modeset_acquire_ctx *ctx)
16294 {
16295         struct drm_i915_private *dev_priv = to_i915(dev);
16296         struct intel_crtc_state *crtc_state;
16297         struct intel_encoder *encoder;
16298         struct intel_crtc *crtc;
16299         intel_wakeref_t wakeref;
16300         int i;
16301
16302         wakeref = intel_display_power_get(dev_priv, POWER_DOMAIN_INIT);
16303
16304         intel_early_display_was(dev_priv);
16305         intel_modeset_readout_hw_state(dev);
16306
16307         /* HW state is read out, now we need to sanitize this mess. */
16308         get_encoder_power_domains(dev_priv);
16309
16310         if (HAS_PCH_IBX(dev_priv))
16311                 ibx_sanitize_pch_ports(dev_priv);
16312
16313         /*
16314          * intel_sanitize_plane_mapping() may need to do vblank
16315          * waits, so we need vblank interrupts restored beforehand.
16316          */
16317         for_each_intel_crtc(&dev_priv->drm, crtc) {
16318                 crtc_state = to_intel_crtc_state(crtc->base.state);
16319
16320                 drm_crtc_vblank_reset(&crtc->base);
16321
16322                 if (crtc_state->base.active)
16323                         intel_crtc_vblank_on(crtc_state);
16324         }
16325
16326         intel_sanitize_plane_mapping(dev_priv);
16327
16328         for_each_intel_encoder(dev, encoder)
16329                 intel_sanitize_encoder(encoder);
16330
16331         for_each_intel_crtc(&dev_priv->drm, crtc) {
16332                 crtc_state = to_intel_crtc_state(crtc->base.state);
16333                 intel_sanitize_crtc(crtc, ctx);
16334                 intel_dump_pipe_config(crtc, crtc_state,
16335                                        "[setup_hw_state]");
16336         }
16337
16338         intel_modeset_update_connector_atomic_state(dev);
16339
16340         for (i = 0; i < dev_priv->num_shared_dpll; i++) {
16341                 struct intel_shared_dpll *pll = &dev_priv->shared_dplls[i];
16342
16343                 if (!pll->on || pll->active_mask)
16344                         continue;
16345
16346                 DRM_DEBUG_KMS("%s enabled but not in use, disabling\n",
16347                               pll->info->name);
16348
16349                 pll->info->funcs->disable(dev_priv, pll);
16350                 pll->on = false;
16351         }
16352
16353         if (IS_G4X(dev_priv)) {
16354                 g4x_wm_get_hw_state(dev_priv);
16355                 g4x_wm_sanitize(dev_priv);
16356         } else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
16357                 vlv_wm_get_hw_state(dev_priv);
16358                 vlv_wm_sanitize(dev_priv);
16359         } else if (INTEL_GEN(dev_priv) >= 9) {
16360                 skl_wm_get_hw_state(dev_priv);
16361         } else if (HAS_PCH_SPLIT(dev_priv)) {
16362                 ilk_wm_get_hw_state(dev_priv);
16363         }
16364
16365         for_each_intel_crtc(dev, crtc) {
16366                 u64 put_domains;
16367
16368                 crtc_state = to_intel_crtc_state(crtc->base.state);
16369                 put_domains = modeset_get_crtc_power_domains(&crtc->base, crtc_state);
16370                 if (WARN_ON(put_domains))
16371                         modeset_put_power_domains(dev_priv, put_domains);
16372         }
16373
16374         intel_display_power_put(dev_priv, POWER_DOMAIN_INIT, wakeref);
16375
16376         intel_fbc_init_pipe_state(dev_priv);
16377 }
16378
16379 void intel_display_resume(struct drm_device *dev)
16380 {
16381         struct drm_i915_private *dev_priv = to_i915(dev);
16382         struct drm_atomic_state *state = dev_priv->modeset_restore_state;
16383         struct drm_modeset_acquire_ctx ctx;
16384         int ret;
16385
16386         dev_priv->modeset_restore_state = NULL;
16387         if (state)
16388                 state->acquire_ctx = &ctx;
16389
16390         drm_modeset_acquire_init(&ctx, 0);
16391
16392         while (1) {
16393                 ret = drm_modeset_lock_all_ctx(dev, &ctx);
16394                 if (ret != -EDEADLK)
16395                         break;
16396
16397                 drm_modeset_backoff(&ctx);
16398         }
16399
16400         if (!ret)
16401                 ret = __intel_display_resume(dev, state, &ctx);
16402
16403         intel_enable_ipc(dev_priv);
16404         drm_modeset_drop_locks(&ctx);
16405         drm_modeset_acquire_fini(&ctx);
16406
16407         if (ret)
16408                 DRM_ERROR("Restoring old state failed with %i\n", ret);
16409         if (state)
16410                 drm_atomic_state_put(state);
16411 }
16412
16413 static void intel_hpd_poll_fini(struct drm_device *dev)
16414 {
16415         struct intel_connector *connector;
16416         struct drm_connector_list_iter conn_iter;
16417
16418         /* Kill all the work that may have been queued by hpd. */
16419         drm_connector_list_iter_begin(dev, &conn_iter);
16420         for_each_intel_connector_iter(connector, &conn_iter) {
16421                 if (connector->modeset_retry_work.func)
16422                         cancel_work_sync(&connector->modeset_retry_work);
16423                 if (connector->hdcp.shim) {
16424                         cancel_delayed_work_sync(&connector->hdcp.check_work);
16425                         cancel_work_sync(&connector->hdcp.prop_work);
16426                 }
16427         }
16428         drm_connector_list_iter_end(&conn_iter);
16429 }
16430
16431 void intel_modeset_cleanup(struct drm_device *dev)
16432 {
16433         struct drm_i915_private *dev_priv = to_i915(dev);
16434
16435         flush_workqueue(dev_priv->modeset_wq);
16436
16437         flush_work(&dev_priv->atomic_helper.free_work);
16438         WARN_ON(!llist_empty(&dev_priv->atomic_helper.free_list));
16439
16440         /*
16441          * Interrupts and polling as the first thing to avoid creating havoc.
16442          * Too much stuff here (turning of connectors, ...) would
16443          * experience fancy races otherwise.
16444          */
16445         intel_irq_uninstall(dev_priv);
16446
16447         /*
16448          * Due to the hpd irq storm handling the hotplug work can re-arm the
16449          * poll handlers. Hence disable polling after hpd handling is shut down.
16450          */
16451         intel_hpd_poll_fini(dev);
16452
16453         /* poll work can call into fbdev, hence clean that up afterwards */
16454         intel_fbdev_fini(dev_priv);
16455
16456         intel_unregister_dsm_handler();
16457
16458         intel_fbc_global_disable(dev_priv);
16459
16460         /* flush any delayed tasks or pending work */
16461         flush_scheduled_work();
16462
16463         intel_hdcp_component_fini(dev_priv);
16464
16465         drm_mode_config_cleanup(dev);
16466
16467         intel_overlay_cleanup(dev_priv);
16468
16469         intel_gmbus_teardown(dev_priv);
16470
16471         destroy_workqueue(dev_priv->modeset_wq);
16472
16473         intel_fbc_cleanup_cfb(dev_priv);
16474 }
16475
16476 /*
16477  * set vga decode state - true == enable VGA decode
16478  */
16479 int intel_modeset_vga_set_state(struct drm_i915_private *dev_priv, bool state)
16480 {
16481         unsigned reg = INTEL_GEN(dev_priv) >= 6 ? SNB_GMCH_CTRL : INTEL_GMCH_CTRL;
16482         u16 gmch_ctrl;
16483
16484         if (pci_read_config_word(dev_priv->bridge_dev, reg, &gmch_ctrl)) {
16485                 DRM_ERROR("failed to read control word\n");
16486                 return -EIO;
16487         }
16488
16489         if (!!(gmch_ctrl & INTEL_GMCH_VGA_DISABLE) == !state)
16490                 return 0;
16491
16492         if (state)
16493                 gmch_ctrl &= ~INTEL_GMCH_VGA_DISABLE;
16494         else
16495                 gmch_ctrl |= INTEL_GMCH_VGA_DISABLE;
16496
16497         if (pci_write_config_word(dev_priv->bridge_dev, reg, gmch_ctrl)) {
16498                 DRM_ERROR("failed to write control word\n");
16499                 return -EIO;
16500         }
16501
16502         return 0;
16503 }
16504
16505 #if IS_ENABLED(CONFIG_DRM_I915_CAPTURE_ERROR)
16506
16507 struct intel_display_error_state {
16508
16509         u32 power_well_driver;
16510
16511         struct intel_cursor_error_state {
16512                 u32 control;
16513                 u32 position;
16514                 u32 base;
16515                 u32 size;
16516         } cursor[I915_MAX_PIPES];
16517
16518         struct intel_pipe_error_state {
16519                 bool power_domain_on;
16520                 u32 source;
16521                 u32 stat;
16522         } pipe[I915_MAX_PIPES];
16523
16524         struct intel_plane_error_state {
16525                 u32 control;
16526                 u32 stride;
16527                 u32 size;
16528                 u32 pos;
16529                 u32 addr;
16530                 u32 surface;
16531                 u32 tile_offset;
16532         } plane[I915_MAX_PIPES];
16533
16534         struct intel_transcoder_error_state {
16535                 bool available;
16536                 bool power_domain_on;
16537                 enum transcoder cpu_transcoder;
16538
16539                 u32 conf;
16540
16541                 u32 htotal;
16542                 u32 hblank;
16543                 u32 hsync;
16544                 u32 vtotal;
16545                 u32 vblank;
16546                 u32 vsync;
16547         } transcoder[4];
16548 };
16549
16550 struct intel_display_error_state *
16551 intel_display_capture_error_state(struct drm_i915_private *dev_priv)
16552 {
16553         struct intel_display_error_state *error;
16554         int transcoders[] = {
16555                 TRANSCODER_A,
16556                 TRANSCODER_B,
16557                 TRANSCODER_C,
16558                 TRANSCODER_EDP,
16559         };
16560         int i;
16561
16562         BUILD_BUG_ON(ARRAY_SIZE(transcoders) != ARRAY_SIZE(error->transcoder));
16563
16564         if (!HAS_DISPLAY(dev_priv))
16565                 return NULL;
16566
16567         error = kzalloc(sizeof(*error), GFP_ATOMIC);
16568         if (error == NULL)
16569                 return NULL;
16570
16571         if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv))
16572                 error->power_well_driver = I915_READ(HSW_PWR_WELL_CTL2);
16573
16574         for_each_pipe(dev_priv, i) {
16575                 error->pipe[i].power_domain_on =
16576                         __intel_display_power_is_enabled(dev_priv,
16577                                                          POWER_DOMAIN_PIPE(i));
16578                 if (!error->pipe[i].power_domain_on)
16579                         continue;
16580
16581                 error->cursor[i].control = I915_READ(CURCNTR(i));
16582                 error->cursor[i].position = I915_READ(CURPOS(i));
16583                 error->cursor[i].base = I915_READ(CURBASE(i));
16584
16585                 error->plane[i].control = I915_READ(DSPCNTR(i));
16586                 error->plane[i].stride = I915_READ(DSPSTRIDE(i));
16587                 if (INTEL_GEN(dev_priv) <= 3) {
16588                         error->plane[i].size = I915_READ(DSPSIZE(i));
16589                         error->plane[i].pos = I915_READ(DSPPOS(i));
16590                 }
16591                 if (INTEL_GEN(dev_priv) <= 7 && !IS_HASWELL(dev_priv))
16592                         error->plane[i].addr = I915_READ(DSPADDR(i));
16593                 if (INTEL_GEN(dev_priv) >= 4) {
16594                         error->plane[i].surface = I915_READ(DSPSURF(i));
16595                         error->plane[i].tile_offset = I915_READ(DSPTILEOFF(i));
16596                 }
16597
16598                 error->pipe[i].source = I915_READ(PIPESRC(i));
16599
16600                 if (HAS_GMCH(dev_priv))
16601                         error->pipe[i].stat = I915_READ(PIPESTAT(i));
16602         }
16603
16604         for (i = 0; i < ARRAY_SIZE(error->transcoder); i++) {
16605                 enum transcoder cpu_transcoder = transcoders[i];
16606
16607                 if (!INTEL_INFO(dev_priv)->trans_offsets[cpu_transcoder])
16608                         continue;
16609
16610                 error->transcoder[i].available = true;
16611                 error->transcoder[i].power_domain_on =
16612                         __intel_display_power_is_enabled(dev_priv,
16613                                 POWER_DOMAIN_TRANSCODER(cpu_transcoder));
16614                 if (!error->transcoder[i].power_domain_on)
16615                         continue;
16616
16617                 error->transcoder[i].cpu_transcoder = cpu_transcoder;
16618
16619                 error->transcoder[i].conf = I915_READ(PIPECONF(cpu_transcoder));
16620                 error->transcoder[i].htotal = I915_READ(HTOTAL(cpu_transcoder));
16621                 error->transcoder[i].hblank = I915_READ(HBLANK(cpu_transcoder));
16622                 error->transcoder[i].hsync = I915_READ(HSYNC(cpu_transcoder));
16623                 error->transcoder[i].vtotal = I915_READ(VTOTAL(cpu_transcoder));
16624                 error->transcoder[i].vblank = I915_READ(VBLANK(cpu_transcoder));
16625                 error->transcoder[i].vsync = I915_READ(VSYNC(cpu_transcoder));
16626         }
16627
16628         return error;
16629 }
16630
16631 #define err_printf(e, ...) i915_error_printf(e, __VA_ARGS__)
16632
16633 void
16634 intel_display_print_error_state(struct drm_i915_error_state_buf *m,
16635                                 struct intel_display_error_state *error)
16636 {
16637         struct drm_i915_private *dev_priv = m->i915;
16638         int i;
16639
16640         if (!error)
16641                 return;
16642
16643         err_printf(m, "Num Pipes: %d\n", INTEL_INFO(dev_priv)->num_pipes);
16644         if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv))
16645                 err_printf(m, "PWR_WELL_CTL2: %08x\n",
16646                            error->power_well_driver);
16647         for_each_pipe(dev_priv, i) {
16648                 err_printf(m, "Pipe [%d]:\n", i);
16649                 err_printf(m, "  Power: %s\n",
16650                            onoff(error->pipe[i].power_domain_on));
16651                 err_printf(m, "  SRC: %08x\n", error->pipe[i].source);
16652                 err_printf(m, "  STAT: %08x\n", error->pipe[i].stat);
16653
16654                 err_printf(m, "Plane [%d]:\n", i);
16655                 err_printf(m, "  CNTR: %08x\n", error->plane[i].control);
16656                 err_printf(m, "  STRIDE: %08x\n", error->plane[i].stride);
16657                 if (INTEL_GEN(dev_priv) <= 3) {
16658                         err_printf(m, "  SIZE: %08x\n", error->plane[i].size);
16659                         err_printf(m, "  POS: %08x\n", error->plane[i].pos);
16660                 }
16661                 if (INTEL_GEN(dev_priv) <= 7 && !IS_HASWELL(dev_priv))
16662                         err_printf(m, "  ADDR: %08x\n", error->plane[i].addr);
16663                 if (INTEL_GEN(dev_priv) >= 4) {
16664                         err_printf(m, "  SURF: %08x\n", error->plane[i].surface);
16665                         err_printf(m, "  TILEOFF: %08x\n", error->plane[i].tile_offset);
16666                 }
16667
16668                 err_printf(m, "Cursor [%d]:\n", i);
16669                 err_printf(m, "  CNTR: %08x\n", error->cursor[i].control);
16670                 err_printf(m, "  POS: %08x\n", error->cursor[i].position);
16671                 err_printf(m, "  BASE: %08x\n", error->cursor[i].base);
16672         }
16673
16674         for (i = 0; i < ARRAY_SIZE(error->transcoder); i++) {
16675                 if (!error->transcoder[i].available)
16676                         continue;
16677
16678                 err_printf(m, "CPU transcoder: %s\n",
16679                            transcoder_name(error->transcoder[i].cpu_transcoder));
16680                 err_printf(m, "  Power: %s\n",
16681                            onoff(error->transcoder[i].power_domain_on));
16682                 err_printf(m, "  CONF: %08x\n", error->transcoder[i].conf);
16683                 err_printf(m, "  HTOTAL: %08x\n", error->transcoder[i].htotal);
16684                 err_printf(m, "  HBLANK: %08x\n", error->transcoder[i].hblank);
16685                 err_printf(m, "  HSYNC: %08x\n", error->transcoder[i].hsync);
16686                 err_printf(m, "  VTOTAL: %08x\n", error->transcoder[i].vtotal);
16687                 err_printf(m, "  VBLANK: %08x\n", error->transcoder[i].vblank);
16688                 err_printf(m, "  VSYNC: %08x\n", error->transcoder[i].vsync);
16689         }
16690 }
16691
16692 #endif