drivers/gpu/drm/rockchip/rockchip_drm_vop.c

   1 /*
   2  * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd
   3  * Author:Mark Yao <mark.yao@rock-chips.com>
   4  *
   5  * This software is licensed under the terms of the GNU General Public
   6  * License version 2, as published by the Free Software Foundation, and
   7  * may be copied, distributed, and modified under those terms.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  */
  14
  15 #include <drm/drm.h>
  16 #include <drm/drmP.h>
  17 #include <drm/drm_atomic.h>
  18 #include <drm/drm_atomic_uapi.h>
  19 #include <drm/drm_crtc.h>
  20 #include <drm/drm_flip_work.h>
  21 #include <drm/drm_gem_framebuffer_helper.h>
  22 #include <drm/drm_plane_helper.h>
  23 #include <drm/drm_probe_helper.h>
  24 #ifdef CONFIG_DRM_ANALOGIX_DP
  25 #include <drm/bridge/analogix_dp.h>
  26 #endif
  27
  28 #include <linux/kernel.h>
  29 #include <linux/module.h>
  30 #include <linux/platform_device.h>
  31 #include <linux/clk.h>
  32 #include <linux/iopoll.h>
  33 #include <linux/of.h>
  34 #include <linux/of_device.h>
  35 #include <linux/pm_runtime.h>
  36 #include <linux/component.h>
  37 #include <linux/overflow.h>
  38
  39 #include <linux/reset.h>
  40 #include <linux/delay.h>
  41
  42 #include "rockchip_drm_drv.h"
  43 #include "rockchip_drm_gem.h"
  44 #include "rockchip_drm_fb.h"
  45 #include "rockchip_drm_psr.h"
  46 #include "rockchip_drm_vop.h"
  47 #include "rockchip_rgb.h"
  48
  49 #define VOP_WIN_SET(vop, win, name, v) \
  50                 vop_reg_set(vop, &win->phy->name, win->base, ~0, v, #name)
  51 #define VOP_SCL_SET(vop, win, name, v) \
  52                 vop_reg_set(vop, &win->phy->scl->name, win->base, ~0, v, #name)
  53 #define VOP_SCL_SET_EXT(vop, win, name, v) \
  54                 vop_reg_set(vop, &win->phy->scl->ext->name, \
  55                             win->base, ~0, v, #name)
  56
  57 #define VOP_WIN_YUV2YUV_SET(vop, win_yuv2yuv, name, v) \
  58         do { \
  59                 if (win_yuv2yuv && win_yuv2yuv->name.mask) \
  60                         vop_reg_set(vop, &win_yuv2yuv->name, 0, ~0, v, #name); \
  61         } while (0)
  62
  63 #define VOP_WIN_YUV2YUV_COEFFICIENT_SET(vop, win_yuv2yuv, name, v) \
  64         do { \
  65                 if (win_yuv2yuv && win_yuv2yuv->phy->name.mask) \
  66                         vop_reg_set(vop, &win_yuv2yuv->phy->name, win_yuv2yuv->base, ~0, v, #name); \
  67         } while (0)
  68
  69 #define VOP_INTR_SET_MASK(vop, name, mask, v) \
  70                 vop_reg_set(vop, &vop->data->intr->name, 0, mask, v, #name)
  71
  72 #define VOP_REG_SET(vop, group, name, v) \
  73                     vop_reg_set(vop, &vop->data->group->name, 0, ~0, v, #name)
  74
  75 #define VOP_INTR_SET_TYPE(vop, name, type, v) \
  76         do { \
  77                 int i, reg = 0, mask = 0; \
  78                 for (i = 0; i < vop->data->intr->nintrs; i++) { \
  79                         if (vop->data->intr->intrs[i] & type) { \
  80                                 reg |= (v) << i; \
  81                                 mask |= 1 << i; \
  82                         } \
  83                 } \
  84                 VOP_INTR_SET_MASK(vop, name, mask, reg); \
  85         } while (0)
  86 #define VOP_INTR_GET_TYPE(vop, name, type) \
  87                 vop_get_intr_type(vop, &vop->data->intr->name, type)
  88
  89 #define VOP_WIN_GET(vop, win, name) \
  90                 vop_read_reg(vop, win->offset, win->phy->name)
  91
  92 #define VOP_WIN_HAS_REG(win, name) \
  93         (!!(win->phy->name.mask))
  94
  95 #define VOP_WIN_GET_YRGBADDR(vop, win) \
  96                 vop_readl(vop, win->base + win->phy->yrgb_mst.offset)
  97
  98 #define VOP_WIN_TO_INDEX(vop_win) \
  99         ((vop_win) - (vop_win)->vop->win)
 100
 101 #define to_vop(x) container_of(x, struct vop, crtc)
 102 #define to_vop_win(x) container_of(x, struct vop_win, base)
 103
 104 /*
 105  * The coefficients of the following matrix are all fixed points.
 106  * The format is S2.10 for the 3x3 part of the matrix, and S9.12 for the offsets.
 107  * They are all represented in two's complement.
 108  */
 109 static const uint32_t bt601_yuv2rgb[] = {
 110         0x4A8, 0x0,    0x662,
 111         0x4A8, 0x1E6F, 0x1CBF,
 112         0x4A8, 0x812,  0x0,
 113         0x321168, 0x0877CF, 0x2EB127
 114 };
 115
 116 enum vop_pending {
 117         VOP_PENDING_FB_UNREF,
 118 };
 119
 120 struct vop_win {
 121         struct drm_plane base;
 122         const struct vop_win_data *data;
 123         const struct vop_win_yuv2yuv_data *yuv2yuv_data;
 124         struct vop *vop;
 125 };
 126
 127 struct rockchip_rgb;
 128 struct vop {
 129         struct drm_crtc crtc;
 130         struct device *dev;
 131         struct drm_device *drm_dev;
 132         bool is_enabled;
 133
 134         struct completion dsp_hold_completion;
 135
 136         /* protected by dev->event_lock */
 137         struct drm_pending_vblank_event *event;
 138
 139         struct drm_flip_work fb_unref_work;
 140         unsigned long pending;
 141
 142         struct completion line_flag_completion;
 143
 144         const struct vop_data *data;
 145
 146         uint32_t *regsbak;
 147         void __iomem *regs;
 148
 149         /* physical map length of vop register */
 150         uint32_t len;
 151
 152         /* one time only one process allowed to config the register */
 153         spinlock_t reg_lock;
 154         /* lock vop irq reg */
 155         spinlock_t irq_lock;
 156         /* protects crtc enable/disable */
 157         struct mutex vop_lock;
 158
 159         unsigned int irq;
 160
 161         /* vop AHP clk */
 162         struct clk *hclk;
 163         /* vop dclk */
 164         struct clk *dclk;
 165         /* vop share memory frequency */
 166         struct clk *aclk;
 167
 168         /* vop dclk reset */
 169         struct reset_control *dclk_rst;
 170
 171         /* optional internal rgb encoder */
 172         struct rockchip_rgb *rgb;
 173
 174         struct vop_win win[];
 175 };
 176
 177 static inline void vop_writel(struct vop *vop, uint32_t offset, uint32_t v)
 178 {
 179         writel(v, vop->regs + offset);
 180         vop->regsbak[offset >> 2] = v;
 181 }
 182
 183 static inline uint32_t vop_readl(struct vop *vop, uint32_t offset)
 184 {
 185         return readl(vop->regs + offset);
 186 }
 187
 188 static inline uint32_t vop_read_reg(struct vop *vop, uint32_t base,
 189                                     const struct vop_reg *reg)
 190 {
 191         return (vop_readl(vop, base + reg->offset) >> reg->shift) & reg->mask;
 192 }
 193
 194 static void vop_reg_set(struct vop *vop, const struct vop_reg *reg,
 195                         uint32_t _offset, uint32_t _mask, uint32_t v,
 196                         const char *reg_name)
 197 {
 198         int offset, mask, shift;
 199
 200         if (!reg || !reg->mask) {
 201                 DRM_DEV_DEBUG(vop->dev, "Warning: not support %s\n", reg_name);
 202                 return;
 203         }
 204
 205         offset = reg->offset + _offset;
 206         mask = reg->mask & _mask;
 207         shift = reg->shift;
 208
 209         if (reg->write_mask) {
 210                 v = ((v << shift) & 0xffff) | (mask << (shift + 16));
 211         } else {
 212                 uint32_t cached_val = vop->regsbak[offset >> 2];
 213
 214                 v = (cached_val & ~(mask << shift)) | ((v & mask) << shift);
 215                 vop->regsbak[offset >> 2] = v;
 216         }
 217
 218         if (reg->relaxed)
 219                 writel_relaxed(v, vop->regs + offset);
 220         else
 221                 writel(v, vop->regs + offset);
 222 }
 223
 224 static inline uint32_t vop_get_intr_type(struct vop *vop,
 225                                          const struct vop_reg *reg, int type)
 226 {
 227         uint32_t i, ret = 0;
 228         uint32_t regs = vop_read_reg(vop, 0, reg);
 229
 230         for (i = 0; i < vop->data->intr->nintrs; i++) {
 231                 if ((type & vop->data->intr->intrs[i]) && (regs & 1 << i))
 232                         ret |= vop->data->intr->intrs[i];
 233         }
 234
 235         return ret;
 236 }
 237
 238 static inline void vop_cfg_done(struct vop *vop)
 239 {
 240         VOP_REG_SET(vop, common, cfg_done, 1);
 241 }
 242
 243 static bool has_rb_swapped(uint32_t format)
 244 {
 245         switch (format) {
 246         case DRM_FORMAT_XBGR8888:
 247         case DRM_FORMAT_ABGR8888:
 248         case DRM_FORMAT_BGR888:
 249         case DRM_FORMAT_BGR565:
 250                 return true;
 251         default:
 252                 return false;
 253         }
 254 }
 255
 256 static enum vop_data_format vop_convert_format(uint32_t format)
 257 {
 258         switch (format) {
 259         case DRM_FORMAT_XRGB8888:
 260         case DRM_FORMAT_ARGB8888:
 261         case DRM_FORMAT_XBGR8888:
 262         case DRM_FORMAT_ABGR8888:
 263                 return VOP_FMT_ARGB8888;
 264         case DRM_FORMAT_RGB888:
 265         case DRM_FORMAT_BGR888:
 266                 return VOP_FMT_RGB888;
 267         case DRM_FORMAT_RGB565:
 268         case DRM_FORMAT_BGR565:
 269                 return VOP_FMT_RGB565;
 270         case DRM_FORMAT_NV12:
 271                 return VOP_FMT_YUV420SP;
 272         case DRM_FORMAT_NV16:
 273                 return VOP_FMT_YUV422SP;
 274         case DRM_FORMAT_NV24:
 275                 return VOP_FMT_YUV444SP;
 276         default:
 277                 DRM_ERROR("unsupported format[%08x]\n", format);
 278                 return -EINVAL;
 279         }
 280 }
 281
 282 static uint16_t scl_vop_cal_scale(enum scale_mode mode, uint32_t src,
 283                                   uint32_t dst, bool is_horizontal,
 284                                   int vsu_mode, int *vskiplines)
 285 {
 286         uint16_t val = 1 << SCL_FT_DEFAULT_FIXPOINT_SHIFT;
 287
 288         if (vskiplines)
 289                 *vskiplines = 0;
 290
 291         if (is_horizontal) {
 292                 if (mode == SCALE_UP)
 293                         val = GET_SCL_FT_BIC(src, dst);
 294                 else if (mode == SCALE_DOWN)
 295                         val = GET_SCL_FT_BILI_DN(src, dst);
 296         } else {
 297                 if (mode == SCALE_UP) {
 298                         if (vsu_mode == SCALE_UP_BIL)
 299                                 val = GET_SCL_FT_BILI_UP(src, dst);
 300                         else
 301                                 val = GET_SCL_FT_BIC(src, dst);
 302                 } else if (mode == SCALE_DOWN) {
 303                         if (vskiplines) {
 304                                 *vskiplines = scl_get_vskiplines(src, dst);
 305                                 val = scl_get_bili_dn_vskip(src, dst,
 306                                                             *vskiplines);
 307                         } else {
 308                                 val = GET_SCL_FT_BILI_DN(src, dst);
 309                         }
 310                 }
 311         }
 312
 313         return val;
 314 }
 315
 316 static void scl_vop_cal_scl_fac(struct vop *vop, const struct vop_win_data *win,
 317                              uint32_t src_w, uint32_t src_h, uint32_t dst_w,
 318                              uint32_t dst_h, uint32_t pixel_format)
 319 {
 320         uint16_t yrgb_hor_scl_mode, yrgb_ver_scl_mode;
 321         uint16_t cbcr_hor_scl_mode = SCALE_NONE;
 322         uint16_t cbcr_ver_scl_mode = SCALE_NONE;
 323         int hsub = drm_format_horz_chroma_subsampling(pixel_format);
 324         int vsub = drm_format_vert_chroma_subsampling(pixel_format);
 325         const struct drm_format_info *info;
 326         bool is_yuv = false;
 327         uint16_t cbcr_src_w = src_w / hsub;
 328         uint16_t cbcr_src_h = src_h / vsub;
 329         uint16_t vsu_mode;
 330         uint16_t lb_mode;
 331         uint32_t val;
 332         int vskiplines;
 333
 334         info = drm_format_info(pixel_format);
 335
 336         if (info->is_yuv)
 337                 is_yuv = true;
 338
 339         if (dst_w > 3840) {
 340                 DRM_DEV_ERROR(vop->dev, "Maximum dst width (3840) exceeded\n");
 341                 return;
 342         }
 343
 344         if (!win->phy->scl->ext) {
 345                 VOP_SCL_SET(vop, win, scale_yrgb_x,
 346                             scl_cal_scale2(src_w, dst_w));
 347                 VOP_SCL_SET(vop, win, scale_yrgb_y,
 348                             scl_cal_scale2(src_h, dst_h));
 349                 if (is_yuv) {
 350                         VOP_SCL_SET(vop, win, scale_cbcr_x,
 351                                     scl_cal_scale2(cbcr_src_w, dst_w));
 352                         VOP_SCL_SET(vop, win, scale_cbcr_y,
 353                                     scl_cal_scale2(cbcr_src_h, dst_h));
 354                 }
 355                 return;
 356         }
 357
 358         yrgb_hor_scl_mode = scl_get_scl_mode(src_w, dst_w);
 359         yrgb_ver_scl_mode = scl_get_scl_mode(src_h, dst_h);
 360
 361         if (is_yuv) {
 362                 cbcr_hor_scl_mode = scl_get_scl_mode(cbcr_src_w, dst_w);
 363                 cbcr_ver_scl_mode = scl_get_scl_mode(cbcr_src_h, dst_h);
 364                 if (cbcr_hor_scl_mode == SCALE_DOWN)
 365                         lb_mode = scl_vop_cal_lb_mode(dst_w, true);
 366                 else
 367                         lb_mode = scl_vop_cal_lb_mode(cbcr_src_w, true);
 368         } else {
 369                 if (yrgb_hor_scl_mode == SCALE_DOWN)
 370                         lb_mode = scl_vop_cal_lb_mode(dst_w, false);
 371                 else
 372                         lb_mode = scl_vop_cal_lb_mode(src_w, false);
 373         }
 374
 375         VOP_SCL_SET_EXT(vop, win, lb_mode, lb_mode);
 376         if (lb_mode == LB_RGB_3840X2) {
 377                 if (yrgb_ver_scl_mode != SCALE_NONE) {
 378                         DRM_DEV_ERROR(vop->dev, "not allow yrgb ver scale\n");
 379                         return;
 380                 }
 381                 if (cbcr_ver_scl_mode != SCALE_NONE) {
 382                         DRM_DEV_ERROR(vop->dev, "not allow cbcr ver scale\n");
 383                         return;
 384                 }
 385                 vsu_mode = SCALE_UP_BIL;
 386         } else if (lb_mode == LB_RGB_2560X4) {
 387                 vsu_mode = SCALE_UP_BIL;
 388         } else {
 389                 vsu_mode = SCALE_UP_BIC;
 390         }
 391
 392         val = scl_vop_cal_scale(yrgb_hor_scl_mode, src_w, dst_w,
 393                                 true, 0, NULL);
 394         VOP_SCL_SET(vop, win, scale_yrgb_x, val);
 395         val = scl_vop_cal_scale(yrgb_ver_scl_mode, src_h, dst_h,
 396                                 false, vsu_mode, &vskiplines);
 397         VOP_SCL_SET(vop, win, scale_yrgb_y, val);
 398
 399         VOP_SCL_SET_EXT(vop, win, vsd_yrgb_gt4, vskiplines == 4);
 400         VOP_SCL_SET_EXT(vop, win, vsd_yrgb_gt2, vskiplines == 2);
 401
 402         VOP_SCL_SET_EXT(vop, win, yrgb_hor_scl_mode, yrgb_hor_scl_mode);
 403         VOP_SCL_SET_EXT(vop, win, yrgb_ver_scl_mode, yrgb_ver_scl_mode);
 404         VOP_SCL_SET_EXT(vop, win, yrgb_hsd_mode, SCALE_DOWN_BIL);
 405         VOP_SCL_SET_EXT(vop, win, yrgb_vsd_mode, SCALE_DOWN_BIL);
 406         VOP_SCL_SET_EXT(vop, win, yrgb_vsu_mode, vsu_mode);
 407         if (is_yuv) {
 408                 val = scl_vop_cal_scale(cbcr_hor_scl_mode, cbcr_src_w,
 409                                         dst_w, true, 0, NULL);
 410                 VOP_SCL_SET(vop, win, scale_cbcr_x, val);
 411                 val = scl_vop_cal_scale(cbcr_ver_scl_mode, cbcr_src_h,
 412                                         dst_h, false, vsu_mode, &vskiplines);
 413                 VOP_SCL_SET(vop, win, scale_cbcr_y, val);
 414
 415                 VOP_SCL_SET_EXT(vop, win, vsd_cbcr_gt4, vskiplines == 4);
 416                 VOP_SCL_SET_EXT(vop, win, vsd_cbcr_gt2, vskiplines == 2);
 417                 VOP_SCL_SET_EXT(vop, win, cbcr_hor_scl_mode, cbcr_hor_scl_mode);
 418                 VOP_SCL_SET_EXT(vop, win, cbcr_ver_scl_mode, cbcr_ver_scl_mode);
 419                 VOP_SCL_SET_EXT(vop, win, cbcr_hsd_mode, SCALE_DOWN_BIL);
 420                 VOP_SCL_SET_EXT(vop, win, cbcr_vsd_mode, SCALE_DOWN_BIL);
 421                 VOP_SCL_SET_EXT(vop, win, cbcr_vsu_mode, vsu_mode);
 422         }
 423 }
 424
 425 static void vop_dsp_hold_valid_irq_enable(struct vop *vop)
 426 {
 427         unsigned long flags;
 428
 429         if (WARN_ON(!vop->is_enabled))
 430                 return;
 431
 432         spin_lock_irqsave(&vop->irq_lock, flags);
 433
 434         VOP_INTR_SET_TYPE(vop, clear, DSP_HOLD_VALID_INTR, 1);
 435         VOP_INTR_SET_TYPE(vop, enable, DSP_HOLD_VALID_INTR, 1);
 436
 437         spin_unlock_irqrestore(&vop->irq_lock, flags);
 438 }
 439
 440 static void vop_dsp_hold_valid_irq_disable(struct vop *vop)
 441 {
 442         unsigned long flags;
 443
 444         if (WARN_ON(!vop->is_enabled))
 445                 return;
 446
 447         spin_lock_irqsave(&vop->irq_lock, flags);
 448
 449         VOP_INTR_SET_TYPE(vop, enable, DSP_HOLD_VALID_INTR, 0);
 450
 451         spin_unlock_irqrestore(&vop->irq_lock, flags);
 452 }
 453
 454 /*
 455  * (1) each frame starts at the start of the Vsync pulse which is signaled by
 456  *     the "FRAME_SYNC" interrupt.
 457  * (2) the active data region of each frame ends at dsp_vact_end
 458  * (3) we should program this same number (dsp_vact_end) into dsp_line_frag_num,
 459  *      to get "LINE_FLAG" interrupt at the end of the active on screen data.
 460  *
 461  * VOP_INTR_CTRL0.dsp_line_frag_num = VOP_DSP_VACT_ST_END.dsp_vact_end
 462  * Interrupts
 463  * LINE_FLAG -------------------------------+
 464  * FRAME_SYNC ----+                         |
 465  *                |                         |
 466  *                v                         v
 467  *                | Vsync | Vbp |  Vactive  | Vfp |
 468  *                        ^     ^           ^     ^
 469  *                        |     |           |     |
 470  *                        |     |           |     |
 471  * dsp_vs_end ------------+     |           |     |   VOP_DSP_VTOTAL_VS_END
 472  * dsp_vact_start --------------+           |     |   VOP_DSP_VACT_ST_END
 473  * dsp_vact_end ----------------------------+     |   VOP_DSP_VACT_ST_END
 474  * dsp_total -------------------------------------+   VOP_DSP_VTOTAL_VS_END
 475  */
 476 static bool vop_line_flag_irq_is_enabled(struct vop *vop)
 477 {
 478         uint32_t line_flag_irq;
 479         unsigned long flags;
 480
 481         spin_lock_irqsave(&vop->irq_lock, flags);
 482
 483         line_flag_irq = VOP_INTR_GET_TYPE(vop, enable, LINE_FLAG_INTR);
 484
 485         spin_unlock_irqrestore(&vop->irq_lock, flags);
 486
 487         return !!line_flag_irq;
 488 }
 489
 490 static void vop_line_flag_irq_enable(struct vop *vop)
 491 {
 492         unsigned long flags;
 493
 494         if (WARN_ON(!vop->is_enabled))
 495                 return;
 496
 497         spin_lock_irqsave(&vop->irq_lock, flags);
 498
 499         VOP_INTR_SET_TYPE(vop, clear, LINE_FLAG_INTR, 1);
 500         VOP_INTR_SET_TYPE(vop, enable, LINE_FLAG_INTR, 1);
 501
 502         spin_unlock_irqrestore(&vop->irq_lock, flags);
 503 }
 504
 505 static void vop_line_flag_irq_disable(struct vop *vop)
 506 {
 507         unsigned long flags;
 508
 509         if (WARN_ON(!vop->is_enabled))
 510                 return;
 511
 512         spin_lock_irqsave(&vop->irq_lock, flags);
 513
 514         VOP_INTR_SET_TYPE(vop, enable, LINE_FLAG_INTR, 0);
 515
 516         spin_unlock_irqrestore(&vop->irq_lock, flags);
 517 }
 518
 519 static int vop_core_clks_enable(struct vop *vop)
 520 {
 521         int ret;
 522
 523         ret = clk_enable(vop->hclk);
 524         if (ret < 0)
 525                 return ret;
 526
 527         ret = clk_enable(vop->aclk);
 528         if (ret < 0)
 529                 goto err_disable_hclk;
 530
 531         return 0;
 532
 533 err_disable_hclk:
 534         clk_disable(vop->hclk);
 535         return ret;
 536 }
 537
 538 static void vop_core_clks_disable(struct vop *vop)
 539 {
 540         clk_disable(vop->aclk);
 541         clk_disable(vop->hclk);
 542 }
 543
 544 static void vop_win_disable(struct vop *vop, const struct vop_win_data *win)
 545 {
 546         if (win->phy->scl && win->phy->scl->ext) {
 547                 VOP_SCL_SET_EXT(vop, win, yrgb_hor_scl_mode, SCALE_NONE);
 548                 VOP_SCL_SET_EXT(vop, win, yrgb_ver_scl_mode, SCALE_NONE);
 549                 VOP_SCL_SET_EXT(vop, win, cbcr_hor_scl_mode, SCALE_NONE);
 550                 VOP_SCL_SET_EXT(vop, win, cbcr_ver_scl_mode, SCALE_NONE);
 551         }
 552
 553         VOP_WIN_SET(vop, win, enable, 0);
 554 }
 555
 556 static int vop_enable(struct drm_crtc *crtc)
 557 {
 558         struct vop *vop = to_vop(crtc);
 559         int ret, i;
 560
 561         ret = pm_runtime_get_sync(vop->dev);
 562         if (ret < 0) {
 563                 DRM_DEV_ERROR(vop->dev, "failed to get pm runtime: %d\n", ret);
 564                 return ret;
 565         }
 566
 567         ret = vop_core_clks_enable(vop);
 568         if (WARN_ON(ret < 0))
 569                 goto err_put_pm_runtime;
 570
 571         ret = clk_enable(vop->dclk);
 572         if (WARN_ON(ret < 0))
 573                 goto err_disable_core;
 574
 575         /*
 576          * Slave iommu shares power, irq and clock with vop.  It was associated
 577          * automatically with this master device via common driver code.
 578          * Now that we have enabled the clock we attach it to the shared drm
 579          * mapping.
 580          */
 581         ret = rockchip_drm_dma_attach_device(vop->drm_dev, vop->dev);
 582         if (ret) {
 583                 DRM_DEV_ERROR(vop->dev,
 584                               "failed to attach dma mapping, %d\n", ret);
 585                 goto err_disable_dclk;
 586         }
 587
 588         spin_lock(&vop->reg_lock);
 589         for (i = 0; i < vop->len; i += 4)
 590                 writel_relaxed(vop->regsbak[i / 4], vop->regs + i);
 591
 592         /*
 593          * We need to make sure that all windows are disabled before we
 594          * enable the crtc. Otherwise we might try to scan from a destroyed
 595          * buffer later.
 596          */
 597         for (i = 0; i < vop->data->win_size; i++) {
 598                 struct vop_win *vop_win = &vop->win[i];
 599                 const struct vop_win_data *win = vop_win->data;
 600
 601                 vop_win_disable(vop, win);
 602         }
 603         spin_unlock(&vop->reg_lock);
 604
 605         vop_cfg_done(vop);
 606
 607         /*
 608          * At here, vop clock & iommu is enable, R/W vop regs would be safe.
 609          */
 610         vop->is_enabled = true;
 611
 612         spin_lock(&vop->reg_lock);
 613
 614         VOP_REG_SET(vop, common, standby, 1);
 615
 616         spin_unlock(&vop->reg_lock);
 617
 618         drm_crtc_vblank_on(crtc);
 619
 620         return 0;
 621
 622 err_disable_dclk:
 623         clk_disable(vop->dclk);
 624 err_disable_core:
 625         vop_core_clks_disable(vop);
 626 err_put_pm_runtime:
 627         pm_runtime_put_sync(vop->dev);
 628         return ret;
 629 }
 630
 631 static void vop_crtc_atomic_disable(struct drm_crtc *crtc,
 632                                     struct drm_crtc_state *old_state)
 633 {
 634         struct vop *vop = to_vop(crtc);
 635
 636         WARN_ON(vop->event);
 637
 638         mutex_lock(&vop->vop_lock);
 639         drm_crtc_vblank_off(crtc);
 640
 641         /*
 642          * Vop standby will take effect at end of current frame,
 643          * if dsp hold valid irq happen, it means standby complete.
 644          *
 645          * we must wait standby complete when we want to disable aclk,
 646          * if not, memory bus maybe dead.
 647          */
 648         reinit_completion(&vop->dsp_hold_completion);
 649         vop_dsp_hold_valid_irq_enable(vop);
 650
 651         spin_lock(&vop->reg_lock);
 652
 653         VOP_REG_SET(vop, common, standby, 1);
 654
 655         spin_unlock(&vop->reg_lock);
 656
 657         wait_for_completion(&vop->dsp_hold_completion);
 658
 659         vop_dsp_hold_valid_irq_disable(vop);
 660
 661         vop->is_enabled = false;
 662
 663         /*
 664          * vop standby complete, so iommu detach is safe.
 665          */
 666         rockchip_drm_dma_detach_device(vop->drm_dev, vop->dev);
 667
 668         clk_disable(vop->dclk);
 669         vop_core_clks_disable(vop);
 670         pm_runtime_put(vop->dev);
 671         mutex_unlock(&vop->vop_lock);
 672
 673         if (crtc->state->event && !crtc->state->active) {
 674                 spin_lock_irq(&crtc->dev->event_lock);
 675                 drm_crtc_send_vblank_event(crtc, crtc->state->event);
 676                 spin_unlock_irq(&crtc->dev->event_lock);
 677
 678                 crtc->state->event = NULL;
 679         }
 680 }
 681
 682 static void vop_plane_destroy(struct drm_plane *plane)
 683 {
 684         drm_plane_cleanup(plane);
 685 }
 686
 687 static int vop_plane_atomic_check(struct drm_plane *plane,
 688                            struct drm_plane_state *state)
 689 {
 690         struct drm_crtc *crtc = state->crtc;
 691         struct drm_crtc_state *crtc_state;
 692         struct drm_framebuffer *fb = state->fb;
 693         struct vop_win *vop_win = to_vop_win(plane);
 694         const struct vop_win_data *win = vop_win->data;
 695         int ret;
 696         int min_scale = win->phy->scl ? FRAC_16_16(1, 8) :
 697                                         DRM_PLANE_HELPER_NO_SCALING;
 698         int max_scale = win->phy->scl ? FRAC_16_16(8, 1) :
 699                                         DRM_PLANE_HELPER_NO_SCALING;
 700
 701         if (!crtc || !fb)
 702                 return 0;
 703
 704         crtc_state = drm_atomic_get_existing_crtc_state(state->state, crtc);
 705         if (WARN_ON(!crtc_state))
 706                 return -EINVAL;
 707
 708         ret = drm_atomic_helper_check_plane_state(state, crtc_state,
 709                                                   min_scale, max_scale,
 710                                                   true, true);
 711         if (ret)
 712                 return ret;
 713
 714         if (!state->visible)
 715                 return 0;
 716
 717         ret = vop_convert_format(fb->format->format);
 718         if (ret < 0)
 719                 return ret;
 720
 721         /*
 722          * Src.x1 can be odd when do clip, but yuv plane start point
 723          * need align with 2 pixel.
 724          */
 725         if (fb->format->is_yuv && ((state->src.x1 >> 16) % 2)) {
 726                 DRM_ERROR("Invalid Source: Yuv format not support odd xpos\n");
 727                 return -EINVAL;
 728         }
 729
 730         if (fb->format->is_yuv && state->rotation & DRM_MODE_REFLECT_Y) {
 731                 DRM_ERROR("Invalid Source: Yuv format does not support this rotation\n");
 732                 return -EINVAL;
 733         }
 734
 735         return 0;
 736 }
 737
 738 static void vop_plane_atomic_disable(struct drm_plane *plane,
 739                                      struct drm_plane_state *old_state)
 740 {
 741         struct vop_win *vop_win = to_vop_win(plane);
 742         const struct vop_win_data *win = vop_win->data;
 743         struct vop *vop = to_vop(old_state->crtc);
 744
 745         if (!old_state->crtc)
 746                 return;
 747
 748         spin_lock(&vop->reg_lock);
 749
 750         vop_win_disable(vop, win);
 751
 752         spin_unlock(&vop->reg_lock);
 753 }
 754
 755 static void vop_plane_atomic_update(struct drm_plane *plane,
 756                 struct drm_plane_state *old_state)
 757 {
 758         struct drm_plane_state *state = plane->state;
 759         struct drm_crtc *crtc = state->crtc;
 760         struct vop_win *vop_win = to_vop_win(plane);
 761         const struct vop_win_data *win = vop_win->data;
 762         const struct vop_win_yuv2yuv_data *win_yuv2yuv = vop_win->yuv2yuv_data;
 763         struct vop *vop = to_vop(state->crtc);
 764         struct drm_framebuffer *fb = state->fb;
 765         unsigned int actual_w, actual_h;
 766         unsigned int dsp_stx, dsp_sty;
 767         uint32_t act_info, dsp_info, dsp_st;
 768         struct drm_rect *src = &state->src;
 769         struct drm_rect *dest = &state->dst;
 770         struct drm_gem_object *obj, *uv_obj;
 771         struct rockchip_gem_object *rk_obj, *rk_uv_obj;
 772         unsigned long offset;
 773         dma_addr_t dma_addr;
 774         uint32_t val;
 775         bool rb_swap;
 776         int win_index = VOP_WIN_TO_INDEX(vop_win);
 777         int format;
 778         int is_yuv = fb->format->is_yuv;
 779         int i;
 780
 781         /*
 782          * can't update plane when vop is disabled.
 783          */
 784         if (WARN_ON(!crtc))
 785                 return;
 786
 787         if (WARN_ON(!vop->is_enabled))
 788                 return;
 789
 790         if (!state->visible) {
 791                 vop_plane_atomic_disable(plane, old_state);
 792                 return;
 793         }
 794
 795         obj = fb->obj[0];
 796         rk_obj = to_rockchip_obj(obj);
 797
 798         actual_w = drm_rect_width(src) >> 16;
 799         actual_h = drm_rect_height(src) >> 16;
 800         act_info = (actual_h - 1) << 16 | ((actual_w - 1) & 0xffff);
 801
 802         dsp_info = (drm_rect_height(dest) - 1) << 16;
 803         dsp_info |= (drm_rect_width(dest) - 1) & 0xffff;
 804
 805         dsp_stx = dest->x1 + crtc->mode.htotal - crtc->mode.hsync_start;
 806         dsp_sty = dest->y1 + crtc->mode.vtotal - crtc->mode.vsync_start;
 807         dsp_st = dsp_sty << 16 | (dsp_stx & 0xffff);
 808
 809         offset = (src->x1 >> 16) * fb->format->cpp[0];
 810         offset += (src->y1 >> 16) * fb->pitches[0];
 811         dma_addr = rk_obj->dma_addr + offset + fb->offsets[0];
 812
 813         /*
 814          * For y-mirroring we need to move address
 815          * to the beginning of the last line.
 816          */
 817         if (state->rotation & DRM_MODE_REFLECT_Y)
 818                 dma_addr += (actual_h - 1) * fb->pitches[0];
 819
 820         format = vop_convert_format(fb->format->format);
 821
 822         spin_lock(&vop->reg_lock);
 823
 824         VOP_WIN_SET(vop, win, format, format);
 825         VOP_WIN_SET(vop, win, yrgb_vir, DIV_ROUND_UP(fb->pitches[0], 4));
 826         VOP_WIN_SET(vop, win, yrgb_mst, dma_addr);
 827         VOP_WIN_YUV2YUV_SET(vop, win_yuv2yuv, y2r_en, is_yuv);
 828         VOP_WIN_SET(vop, win, y_mir_en,
 829                     (state->rotation & DRM_MODE_REFLECT_Y) ? 1 : 0);
 830         VOP_WIN_SET(vop, win, x_mir_en,
 831                     (state->rotation & DRM_MODE_REFLECT_X) ? 1 : 0);
 832
 833         if (is_yuv) {
 834                 int hsub = drm_format_horz_chroma_subsampling(fb->format->format);
 835                 int vsub = drm_format_vert_chroma_subsampling(fb->format->format);
 836                 int bpp = fb->format->cpp[1];
 837
 838                 uv_obj = fb->obj[1];
 839                 rk_uv_obj = to_rockchip_obj(uv_obj);
 840
 841                 offset = (src->x1 >> 16) * bpp / hsub;
 842                 offset += (src->y1 >> 16) * fb->pitches[1] / vsub;
 843
 844                 dma_addr = rk_uv_obj->dma_addr + offset + fb->offsets[1];
 845                 VOP_WIN_SET(vop, win, uv_vir, DIV_ROUND_UP(fb->pitches[1], 4));
 846                 VOP_WIN_SET(vop, win, uv_mst, dma_addr);
 847
 848                 for (i = 0; i < NUM_YUV2YUV_COEFFICIENTS; i++) {
 849                         VOP_WIN_YUV2YUV_COEFFICIENT_SET(vop,
 850                                                         win_yuv2yuv,
 851                                                         y2r_coefficients[i],
 852                                                         bt601_yuv2rgb[i]);
 853                 }
 854         }
 855
 856         if (win->phy->scl)
 857                 scl_vop_cal_scl_fac(vop, win, actual_w, actual_h,
 858                                     drm_rect_width(dest), drm_rect_height(dest),
 859                                     fb->format->format);
 860
 861         VOP_WIN_SET(vop, win, act_info, act_info);
 862         VOP_WIN_SET(vop, win, dsp_info, dsp_info);
 863         VOP_WIN_SET(vop, win, dsp_st, dsp_st);
 864
 865         rb_swap = has_rb_swapped(fb->format->format);
 866         VOP_WIN_SET(vop, win, rb_swap, rb_swap);
 867
 868         /*
 869          * Blending win0 with the background color doesn't seem to work
 870          * correctly. We only get the background color, no matter the contents
 871          * of the win0 framebuffer.  However, blending pre-multiplied color
 872          * with the default opaque black default background color is a no-op,
 873          * so we can just disable blending to get the correct result.
 874          */
 875         if (fb->format->has_alpha && win_index > 0) {
 876                 VOP_WIN_SET(vop, win, dst_alpha_ctl,
 877                             DST_FACTOR_M0(ALPHA_SRC_INVERSE));
 878                 val = SRC_ALPHA_EN(1) | SRC_COLOR_M0(ALPHA_SRC_PRE_MUL) |
 879                         SRC_ALPHA_M0(ALPHA_STRAIGHT) |
 880                         SRC_BLEND_M0(ALPHA_PER_PIX) |
 881                         SRC_ALPHA_CAL_M0(ALPHA_NO_SATURATION) |
 882                         SRC_FACTOR_M0(ALPHA_ONE);
 883                 VOP_WIN_SET(vop, win, src_alpha_ctl, val);
 884         } else {
 885                 VOP_WIN_SET(vop, win, src_alpha_ctl, SRC_ALPHA_EN(0));
 886         }
 887
 888         VOP_WIN_SET(vop, win, enable, 1);
 889         spin_unlock(&vop->reg_lock);
 890 }
 891
 892 static int vop_plane_atomic_async_check(struct drm_plane *plane,
 893                                         struct drm_plane_state *state)
 894 {
 895         struct vop_win *vop_win = to_vop_win(plane);
 896         const struct vop_win_data *win = vop_win->data;
 897         int min_scale = win->phy->scl ? FRAC_16_16(1, 8) :
 898                                         DRM_PLANE_HELPER_NO_SCALING;
 899         int max_scale = win->phy->scl ? FRAC_16_16(8, 1) :
 900                                         DRM_PLANE_HELPER_NO_SCALING;
 901         struct drm_crtc_state *crtc_state;
 902
 903         if (plane != state->crtc->cursor)
 904                 return -EINVAL;
 905
 906         if (!plane->state)
 907                 return -EINVAL;
 908
 909         if (!plane->state->fb)
 910                 return -EINVAL;
 911
 912         if (state->state)
 913                 crtc_state = drm_atomic_get_existing_crtc_state(state->state,
 914                                                                 state->crtc);
 915         else /* Special case for asynchronous cursor updates. */
 916                 crtc_state = plane->crtc->state;
 917
 918         return drm_atomic_helper_check_plane_state(plane->state, crtc_state,
 919                                                    min_scale, max_scale,
 920                                                    true, true);
 921 }
 922
 923 static void vop_plane_atomic_async_update(struct drm_plane *plane,
 924                                           struct drm_plane_state *new_state)
 925 {
 926         struct vop *vop = to_vop(plane->state->crtc);
 927         struct drm_framebuffer *old_fb = plane->state->fb;
 928
 929         plane->state->crtc_x = new_state->crtc_x;
 930         plane->state->crtc_y = new_state->crtc_y;
 931         plane->state->crtc_h = new_state->crtc_h;
 932         plane->state->crtc_w = new_state->crtc_w;
 933         plane->state->src_x = new_state->src_x;
 934         plane->state->src_y = new_state->src_y;
 935         plane->state->src_h = new_state->src_h;
 936         plane->state->src_w = new_state->src_w;
 937         swap(plane->state->fb, new_state->fb);
 938
 939         if (vop->is_enabled) {
 940                 rockchip_drm_psr_inhibit_get_state(new_state->state);
 941                 vop_plane_atomic_update(plane, plane->state);
 942                 spin_lock(&vop->reg_lock);
 943                 vop_cfg_done(vop);
 944                 spin_unlock(&vop->reg_lock);
 945                 rockchip_drm_psr_inhibit_put_state(new_state->state);
 946
 947                 /*
 948                  * A scanout can still be occurring, so we can't drop the
 949                  * reference to the old framebuffer. To solve this we get a
 950                  * reference to old_fb and set a worker to release it later.
 951                  * FIXME: if we perform 500 async_update calls before the
 952                  * vblank, then we can have 500 different framebuffers waiting
 953                  * to be released.
 954                  */
 955                 if (old_fb && plane->state->fb != old_fb) {
 956                         drm_framebuffer_get(old_fb);
 957                         WARN_ON(drm_crtc_vblank_get(plane->state->crtc) != 0);
 958                         drm_flip_work_queue(&vop->fb_unref_work, old_fb);
 959                         set_bit(VOP_PENDING_FB_UNREF, &vop->pending);
 960                 }
 961         }
 962 }
 963
 964 static const struct drm_plane_helper_funcs plane_helper_funcs = {
 965         .atomic_check = vop_plane_atomic_check,
 966         .atomic_update = vop_plane_atomic_update,
 967         .atomic_disable = vop_plane_atomic_disable,
 968         .atomic_async_check = vop_plane_atomic_async_check,
 969         .atomic_async_update = vop_plane_atomic_async_update,
 970         .prepare_fb = drm_gem_fb_prepare_fb,
 971 };
 972
 973 static const struct drm_plane_funcs vop_plane_funcs = {
 974         .update_plane   = drm_atomic_helper_update_plane,
 975         .disable_plane  = drm_atomic_helper_disable_plane,
 976         .destroy = vop_plane_destroy,
 977         .reset = drm_atomic_helper_plane_reset,
 978         .atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
 979         .atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
 980 };
 981
 982 static int vop_crtc_enable_vblank(struct drm_crtc *crtc)
 983 {
 984         struct vop *vop = to_vop(crtc);
 985         unsigned long flags;
 986
 987         if (WARN_ON(!vop->is_enabled))
 988                 return -EPERM;
 989
 990         spin_lock_irqsave(&vop->irq_lock, flags);
 991
 992         VOP_INTR_SET_TYPE(vop, clear, FS_INTR, 1);
 993         VOP_INTR_SET_TYPE(vop, enable, FS_INTR, 1);
 994
 995         spin_unlock_irqrestore(&vop->irq_lock, flags);
 996
 997         return 0;
 998 }
 999
1000 static void vop_crtc_disable_vblank(struct drm_crtc *crtc)
1001 {
1002         struct vop *vop = to_vop(crtc);
1003         unsigned long flags;
1004
1005         if (WARN_ON(!vop->is_enabled))
1006                 return;
1007
1008         spin_lock_irqsave(&vop->irq_lock, flags);
1009
1010         VOP_INTR_SET_TYPE(vop, enable, FS_INTR, 0);
1011
1012         spin_unlock_irqrestore(&vop->irq_lock, flags);
1013 }
1014
1015 static bool vop_crtc_mode_fixup(struct drm_crtc *crtc,
1016                                 const struct drm_display_mode *mode,
1017                                 struct drm_display_mode *adjusted_mode)
1018 {
1019         struct vop *vop = to_vop(crtc);
1020
1021         adjusted_mode->clock =
1022                 clk_round_rate(vop->dclk, mode->clock * 1000) / 1000;
1023
1024         return true;
1025 }
1026
1027 static void vop_crtc_atomic_enable(struct drm_crtc *crtc,
1028                                    struct drm_crtc_state *old_state)
1029 {
1030         struct vop *vop = to_vop(crtc);
1031         const struct vop_data *vop_data = vop->data;
1032         struct rockchip_crtc_state *s = to_rockchip_crtc_state(crtc->state);
1033         struct drm_display_mode *adjusted_mode = &crtc->state->adjusted_mode;
1034         u16 hsync_len = adjusted_mode->hsync_end - adjusted_mode->hsync_start;
1035         u16 hdisplay = adjusted_mode->hdisplay;
1036         u16 htotal = adjusted_mode->htotal;
1037         u16 hact_st = adjusted_mode->htotal - adjusted_mode->hsync_start;
1038         u16 hact_end = hact_st + hdisplay;
1039         u16 vdisplay = adjusted_mode->vdisplay;
1040         u16 vtotal = adjusted_mode->vtotal;
1041         u16 vsync_len = adjusted_mode->vsync_end - adjusted_mode->vsync_start;
1042         u16 vact_st = adjusted_mode->vtotal - adjusted_mode->vsync_start;
1043         u16 vact_end = vact_st + vdisplay;
1044         uint32_t pin_pol, val;
1045         int dither_bpc = s->output_bpc ? s->output_bpc : 10;
1046         int ret;
1047
1048         mutex_lock(&vop->vop_lock);
1049
1050         WARN_ON(vop->event);
1051
1052         ret = vop_enable(crtc);
1053         if (ret) {
1054                 mutex_unlock(&vop->vop_lock);
1055                 DRM_DEV_ERROR(vop->dev, "Failed to enable vop (%d)\n", ret);
1056                 return;
1057         }
1058
1059         pin_pol = BIT(DCLK_INVERT);
1060         pin_pol |= (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC) ?
1061                    BIT(HSYNC_POSITIVE) : 0;
1062         pin_pol |= (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC) ?
1063                    BIT(VSYNC_POSITIVE) : 0;
1064         VOP_REG_SET(vop, output, pin_pol, pin_pol);
1065         VOP_REG_SET(vop, output, mipi_dual_channel_en, 0);
1066
1067         switch (s->output_type) {
1068         case DRM_MODE_CONNECTOR_LVDS:
1069                 VOP_REG_SET(vop, output, rgb_en, 1);
1070                 VOP_REG_SET(vop, output, rgb_pin_pol, pin_pol);
1071                 break;
1072         case DRM_MODE_CONNECTOR_eDP:
1073                 VOP_REG_SET(vop, output, edp_pin_pol, pin_pol);
1074                 VOP_REG_SET(vop, output, edp_en, 1);
1075                 break;
1076         case DRM_MODE_CONNECTOR_HDMIA:
1077                 VOP_REG_SET(vop, output, hdmi_pin_pol, pin_pol);
1078                 VOP_REG_SET(vop, output, hdmi_en, 1);
1079                 break;
1080         case DRM_MODE_CONNECTOR_DSI:
1081                 VOP_REG_SET(vop, output, mipi_pin_pol, pin_pol);
1082                 VOP_REG_SET(vop, output, mipi_en, 1);
1083                 VOP_REG_SET(vop, output, mipi_dual_channel_en,
1084                             !!(s->output_flags & ROCKCHIP_OUTPUT_DSI_DUAL));
1085                 break;
1086         case DRM_MODE_CONNECTOR_DisplayPort:
1087                 pin_pol &= ~BIT(DCLK_INVERT);
1088                 VOP_REG_SET(vop, output, dp_pin_pol, pin_pol);
1089                 VOP_REG_SET(vop, output, dp_en, 1);
1090                 break;
1091         default:
1092                 DRM_DEV_ERROR(vop->dev, "unsupported connector_type [%d]\n",
1093                               s->output_type);
1094         }
1095
1096         /*
1097          * if vop is not support RGB10 output, need force RGB10 to RGB888.
1098          */
1099         if (s->output_mode == ROCKCHIP_OUT_MODE_AAAA &&
1100             !(vop_data->feature & VOP_FEATURE_OUTPUT_RGB10))
1101                 s->output_mode = ROCKCHIP_OUT_MODE_P888;
1102
1103         if (s->output_mode == ROCKCHIP_OUT_MODE_AAAA && dither_bpc <= 8)
1104                 VOP_REG_SET(vop, common, pre_dither_down, 1);
1105         else
1106                 VOP_REG_SET(vop, common, pre_dither_down, 0);
1107
1108         if (dither_bpc == 6) {
1109                 VOP_REG_SET(vop, common, dither_down_sel, DITHER_DOWN_ALLEGRO);
1110                 VOP_REG_SET(vop, common, dither_down_mode, RGB888_TO_RGB666);
1111                 VOP_REG_SET(vop, common, dither_down_en, 1);
1112         } else {
1113                 VOP_REG_SET(vop, common, dither_down_en, 0);
1114         }
1115
1116         VOP_REG_SET(vop, common, out_mode, s->output_mode);
1117
1118         VOP_REG_SET(vop, modeset, htotal_pw, (htotal << 16) | hsync_len);
1119         val = hact_st << 16;
1120         val |= hact_end;
1121         VOP_REG_SET(vop, modeset, hact_st_end, val);
1122         VOP_REG_SET(vop, modeset, hpost_st_end, val);
1123
1124         VOP_REG_SET(vop, modeset, vtotal_pw, (vtotal << 16) | vsync_len);
1125         val = vact_st << 16;
1126         val |= vact_end;
1127         VOP_REG_SET(vop, modeset, vact_st_end, val);
1128         VOP_REG_SET(vop, modeset, vpost_st_end, val);
1129
1130         VOP_REG_SET(vop, intr, line_flag_num[0], vact_end);
1131
1132         clk_set_rate(vop->dclk, adjusted_mode->clock * 1000);
1133
1134         VOP_REG_SET(vop, common, standby, 0);
1135         mutex_unlock(&vop->vop_lock);
1136 }
1137
1138 static bool vop_fs_irq_is_pending(struct vop *vop)
1139 {
1140         return VOP_INTR_GET_TYPE(vop, status, FS_INTR);
1141 }
1142
1143 static void vop_wait_for_irq_handler(struct vop *vop)
1144 {
1145         bool pending;
1146         int ret;
1147
1148         /*
1149          * Spin until frame start interrupt status bit goes low, which means
1150          * that interrupt handler was invoked and cleared it. The timeout of
1151          * 10 msecs is really too long, but it is just a safety measure if
1152          * something goes really wrong. The wait will only happen in the very
1153          * unlikely case of a vblank happening exactly at the same time and
1154          * shouldn't exceed microseconds range.
1155          */
1156         ret = readx_poll_timeout_atomic(vop_fs_irq_is_pending, vop, pending,
1157                                         !pending, 0, 10 * 1000);
1158         if (ret)
1159                 DRM_DEV_ERROR(vop->dev, "VOP vblank IRQ stuck for 10 ms\n");
1160
1161         synchronize_irq(vop->irq);
1162 }
1163
1164 static void vop_crtc_atomic_flush(struct drm_crtc *crtc,
1165                                   struct drm_crtc_state *old_crtc_state)
1166 {
1167         struct drm_atomic_state *old_state = old_crtc_state->state;
1168         struct drm_plane_state *old_plane_state, *new_plane_state;
1169         struct vop *vop = to_vop(crtc);
1170         struct drm_plane *plane;
1171         int i;
1172
1173         if (WARN_ON(!vop->is_enabled))
1174                 return;
1175
1176         spin_lock(&vop->reg_lock);
1177
1178         vop_cfg_done(vop);
1179
1180         spin_unlock(&vop->reg_lock);
1181
1182         /*
1183          * There is a (rather unlikely) possiblity that a vblank interrupt
1184          * fired before we set the cfg_done bit. To avoid spuriously
1185          * signalling flip completion we need to wait for it to finish.
1186          */
1187         vop_wait_for_irq_handler(vop);
1188
1189         spin_lock_irq(&crtc->dev->event_lock);
1190         if (crtc->state->event) {
1191                 WARN_ON(drm_crtc_vblank_get(crtc) != 0);
1192                 WARN_ON(vop->event);
1193
1194                 vop->event = crtc->state->event;
1195                 crtc->state->event = NULL;
1196         }
1197         spin_unlock_irq(&crtc->dev->event_lock);
1198
1199         for_each_oldnew_plane_in_state(old_state, plane, old_plane_state,
1200                                        new_plane_state, i) {
1201                 if (!old_plane_state->fb)
1202                         continue;
1203
1204                 if (old_plane_state->fb == new_plane_state->fb)
1205                         continue;
1206
1207                 drm_framebuffer_get(old_plane_state->fb);
1208                 WARN_ON(drm_crtc_vblank_get(crtc) != 0);
1209                 drm_flip_work_queue(&vop->fb_unref_work, old_plane_state->fb);
1210                 set_bit(VOP_PENDING_FB_UNREF, &vop->pending);
1211         }
1212 }
1213
1214 static const struct drm_crtc_helper_funcs vop_crtc_helper_funcs = {
1215         .mode_fixup = vop_crtc_mode_fixup,
1216         .atomic_flush = vop_crtc_atomic_flush,
1217         .atomic_enable = vop_crtc_atomic_enable,
1218         .atomic_disable = vop_crtc_atomic_disable,
1219 };
1220
1221 static void vop_crtc_destroy(struct drm_crtc *crtc)
1222 {
1223         drm_crtc_cleanup(crtc);
1224 }
1225
1226 static void vop_crtc_reset(struct drm_crtc *crtc)
1227 {
1228         if (crtc->state)
1229                 __drm_atomic_helper_crtc_destroy_state(crtc->state);
1230         kfree(crtc->state);
1231
1232         crtc->state = kzalloc(sizeof(struct rockchip_crtc_state), GFP_KERNEL);
1233         if (crtc->state)
1234                 crtc->state->crtc = crtc;
1235 }
1236
1237 static struct drm_crtc_state *vop_crtc_duplicate_state(struct drm_crtc *crtc)
1238 {
1239         struct rockchip_crtc_state *rockchip_state;
1240
1241         rockchip_state = kzalloc(sizeof(*rockchip_state), GFP_KERNEL);
1242         if (!rockchip_state)
1243                 return NULL;
1244
1245         __drm_atomic_helper_crtc_duplicate_state(crtc, &rockchip_state->base);
1246         return &rockchip_state->base;
1247 }
1248
1249 static void vop_crtc_destroy_state(struct drm_crtc *crtc,
1250                                    struct drm_crtc_state *state)
1251 {
1252         struct rockchip_crtc_state *s = to_rockchip_crtc_state(state);
1253
1254         __drm_atomic_helper_crtc_destroy_state(&s->base);
1255         kfree(s);
1256 }
1257
1258 #ifdef CONFIG_DRM_ANALOGIX_DP
1259 static struct drm_connector *vop_get_edp_connector(struct vop *vop)
1260 {
1261         struct drm_connector *connector;
1262         struct drm_connector_list_iter conn_iter;
1263
1264         drm_connector_list_iter_begin(vop->drm_dev, &conn_iter);
1265         drm_for_each_connector_iter(connector, &conn_iter) {
1266                 if (connector->connector_type == DRM_MODE_CONNECTOR_eDP) {
1267                         drm_connector_list_iter_end(&conn_iter);
1268                         return connector;
1269                 }
1270         }
1271         drm_connector_list_iter_end(&conn_iter);
1272
1273         return NULL;
1274 }
1275
1276 static int vop_crtc_set_crc_source(struct drm_crtc *crtc,
1277                                    const char *source_name)
1278 {
1279         struct vop *vop = to_vop(crtc);
1280         struct drm_connector *connector;
1281         int ret;
1282
1283         connector = vop_get_edp_connector(vop);
1284         if (!connector)
1285                 return -EINVAL;
1286
1287         if (source_name && strcmp(source_name, "auto") == 0)
1288                 ret = analogix_dp_start_crc(connector);
1289         else if (!source_name)
1290                 ret = analogix_dp_stop_crc(connector);
1291         else
1292                 ret = -EINVAL;
1293
1294         return ret;
1295 }
1296
1297 static int
1298 vop_crtc_verify_crc_source(struct drm_crtc *crtc, const char *source_name,
1299                            size_t *values_cnt)
1300 {
1301         if (source_name && strcmp(source_name, "auto") != 0)
1302                 return -EINVAL;
1303
1304         *values_cnt = 3;
1305         return 0;
1306 }
1307
1308 #else
1309 static int vop_crtc_set_crc_source(struct drm_crtc *crtc,
1310                                    const char *source_name)
1311 {
1312         return -ENODEV;
1313 }
1314
1315 static int
1316 vop_crtc_verify_crc_source(struct drm_crtc *crtc, const char *source_name,
1317                            size_t *values_cnt)
1318 {
1319         return -ENODEV;
1320 }
1321 #endif
1322
1323 static const struct drm_crtc_funcs vop_crtc_funcs = {
1324         .set_config = drm_atomic_helper_set_config,
1325         .page_flip = drm_atomic_helper_page_flip,
1326         .destroy = vop_crtc_destroy,
1327         .reset = vop_crtc_reset,
1328         .atomic_duplicate_state = vop_crtc_duplicate_state,
1329         .atomic_destroy_state = vop_crtc_destroy_state,
1330         .enable_vblank = vop_crtc_enable_vblank,
1331         .disable_vblank = vop_crtc_disable_vblank,
1332         .set_crc_source = vop_crtc_set_crc_source,
1333         .verify_crc_source = vop_crtc_verify_crc_source,
1334 };
1335
1336 static void vop_fb_unref_worker(struct drm_flip_work *work, void *val)
1337 {
1338         struct vop *vop = container_of(work, struct vop, fb_unref_work);
1339         struct drm_framebuffer *fb = val;
1340
1341         drm_crtc_vblank_put(&vop->crtc);
1342         drm_framebuffer_put(fb);
1343 }
1344
1345 static void vop_handle_vblank(struct vop *vop)
1346 {
1347         struct drm_device *drm = vop->drm_dev;
1348         struct drm_crtc *crtc = &vop->crtc;
1349
1350         spin_lock(&drm->event_lock);
1351         if (vop->event) {
1352                 drm_crtc_send_vblank_event(crtc, vop->event);
1353                 drm_crtc_vblank_put(crtc);
1354                 vop->event = NULL;
1355         }
1356         spin_unlock(&drm->event_lock);
1357
1358         if (test_and_clear_bit(VOP_PENDING_FB_UNREF, &vop->pending))
1359                 drm_flip_work_commit(&vop->fb_unref_work, system_unbound_wq);
1360 }
1361
1362 static irqreturn_t vop_isr(int irq, void *data)
1363 {
1364         struct vop *vop = data;
1365         struct drm_crtc *crtc = &vop->crtc;
1366         uint32_t active_irqs;
1367         int ret = IRQ_NONE;
1368
1369         /*
1370          * The irq is shared with the iommu. If the runtime-pm state of the
1371          * vop-device is disabled the irq has to be targeted at the iommu.
1372          */
1373         if (!pm_runtime_get_if_in_use(vop->dev))
1374                 return IRQ_NONE;
1375
1376         if (vop_core_clks_enable(vop)) {
1377                 DRM_DEV_ERROR_RATELIMITED(vop->dev, "couldn't enable clocks\n");
1378                 goto out;
1379         }
1380
1381         /*
1382          * interrupt register has interrupt status, enable and clear bits, we
1383          * must hold irq_lock to avoid a race with enable/disable_vblank().
1384         */
1385         spin_lock(&vop->irq_lock);
1386
1387         active_irqs = VOP_INTR_GET_TYPE(vop, status, INTR_MASK);
1388         /* Clear all active interrupt sources */
1389         if (active_irqs)
1390                 VOP_INTR_SET_TYPE(vop, clear, active_irqs, 1);
1391
1392         spin_unlock(&vop->irq_lock);
1393
1394         /* This is expected for vop iommu irqs, since the irq is shared */
1395         if (!active_irqs)
1396                 goto out_disable;
1397
1398         if (active_irqs & DSP_HOLD_VALID_INTR) {
1399                 complete(&vop->dsp_hold_completion);
1400                 active_irqs &= ~DSP_HOLD_VALID_INTR;
1401                 ret = IRQ_HANDLED;
1402         }
1403
1404         if (active_irqs & LINE_FLAG_INTR) {
1405                 complete(&vop->line_flag_completion);
1406                 active_irqs &= ~LINE_FLAG_INTR;
1407                 ret = IRQ_HANDLED;
1408         }
1409
1410         if (active_irqs & FS_INTR) {
1411                 drm_crtc_handle_vblank(crtc);
1412                 vop_handle_vblank(vop);
1413                 active_irqs &= ~FS_INTR;
1414                 ret = IRQ_HANDLED;
1415         }
1416
1417         /* Unhandled irqs are spurious. */
1418         if (active_irqs)
1419                 DRM_DEV_ERROR(vop->dev, "Unknown VOP IRQs: %#02x\n",
1420                               active_irqs);
1421
1422 out_disable:
1423         vop_core_clks_disable(vop);
1424 out:
1425         pm_runtime_put(vop->dev);
1426         return ret;
1427 }
1428
1429 static void vop_plane_add_properties(struct drm_plane *plane,
1430                                      const struct vop_win_data *win_data)
1431 {
1432         unsigned int flags = 0;
1433
1434         flags |= VOP_WIN_HAS_REG(win_data, x_mir_en) ? DRM_MODE_REFLECT_X : 0;
1435         flags |= VOP_WIN_HAS_REG(win_data, y_mir_en) ? DRM_MODE_REFLECT_Y : 0;
1436         if (flags)
1437                 drm_plane_create_rotation_property(plane, DRM_MODE_ROTATE_0,
1438                                                    DRM_MODE_ROTATE_0 | flags);
1439 }
1440
1441 static int vop_create_crtc(struct vop *vop)
1442 {
1443         const struct vop_data *vop_data = vop->data;
1444         struct device *dev = vop->dev;
1445         struct drm_device *drm_dev = vop->drm_dev;
1446         struct drm_plane *primary = NULL, *cursor = NULL, *plane, *tmp;
1447         struct drm_crtc *crtc = &vop->crtc;
1448         struct device_node *port;
1449         int ret;
1450         int i;
1451
1452         /*
1453          * Create drm_plane for primary and cursor planes first, since we need
1454          * to pass them to drm_crtc_init_with_planes, which sets the
1455          * "possible_crtcs" to the newly initialized crtc.
1456          */
1457         for (i = 0; i < vop_data->win_size; i++) {
1458                 struct vop_win *vop_win = &vop->win[i];
1459                 const struct vop_win_data *win_data = vop_win->data;
1460
1461                 if (win_data->type != DRM_PLANE_TYPE_PRIMARY &&
1462                     win_data->type != DRM_PLANE_TYPE_CURSOR)
1463                         continue;
1464
1465                 ret = drm_universal_plane_init(vop->drm_dev, &vop_win->base,
1466                                                0, &vop_plane_funcs,
1467                                                win_data->phy->data_formats,
1468                                                win_data->phy->nformats,
1469                                                NULL, win_data->type, NULL);
1470                 if (ret) {
1471                         DRM_DEV_ERROR(vop->dev, "failed to init plane %d\n",
1472                                       ret);
1473                         goto err_cleanup_planes;
1474                 }
1475
1476                 plane = &vop_win->base;
1477                 drm_plane_helper_add(plane, &plane_helper_funcs);
1478                 vop_plane_add_properties(plane, win_data);
1479                 if (plane->type == DRM_PLANE_TYPE_PRIMARY)
1480                         primary = plane;
1481                 else if (plane->type == DRM_PLANE_TYPE_CURSOR)
1482                         cursor = plane;
1483         }
1484
1485         ret = drm_crtc_init_with_planes(drm_dev, crtc, primary, cursor,
1486                                         &vop_crtc_funcs, NULL);
1487         if (ret)
1488                 goto err_cleanup_planes;
1489
1490         drm_crtc_helper_add(crtc, &vop_crtc_helper_funcs);
1491
1492         /*
1493          * Create drm_planes for overlay windows with possible_crtcs restricted
1494          * to the newly created crtc.
1495          */
1496         for (i = 0; i < vop_data->win_size; i++) {
1497                 struct vop_win *vop_win = &vop->win[i];
1498                 const struct vop_win_data *win_data = vop_win->data;
1499                 unsigned long possible_crtcs = drm_crtc_mask(crtc);
1500
1501                 if (win_data->type != DRM_PLANE_TYPE_OVERLAY)
1502                         continue;
1503
1504                 ret = drm_universal_plane_init(vop->drm_dev, &vop_win->base,
1505                                                possible_crtcs,
1506                                                &vop_plane_funcs,
1507                                                win_data->phy->data_formats,
1508                                                win_data->phy->nformats,
1509                                                NULL, win_data->type, NULL);
1510                 if (ret) {
1511                         DRM_DEV_ERROR(vop->dev, "failed to init overlay %d\n",
1512                                       ret);
1513                         goto err_cleanup_crtc;
1514                 }
1515                 drm_plane_helper_add(&vop_win->base, &plane_helper_funcs);
1516                 vop_plane_add_properties(&vop_win->base, win_data);
1517         }
1518
1519         port = of_get_child_by_name(dev->of_node, "port");
1520         if (!port) {
1521                 DRM_DEV_ERROR(vop->dev, "no port node found in %pOF\n",
1522                               dev->of_node);
1523                 ret = -ENOENT;
1524                 goto err_cleanup_crtc;
1525         }
1526
1527         drm_flip_work_init(&vop->fb_unref_work, "fb_unref",
1528                            vop_fb_unref_worker);
1529
1530         init_completion(&vop->dsp_hold_completion);
1531         init_completion(&vop->line_flag_completion);
1532         crtc->port = port;
1533
1534         return 0;
1535
1536 err_cleanup_crtc:
1537         drm_crtc_cleanup(crtc);
1538 err_cleanup_planes:
1539         list_for_each_entry_safe(plane, tmp, &drm_dev->mode_config.plane_list,
1540                                  head)
1541                 drm_plane_cleanup(plane);
1542         return ret;
1543 }
1544
1545 static void vop_destroy_crtc(struct vop *vop)
1546 {
1547         struct drm_crtc *crtc = &vop->crtc;
1548         struct drm_device *drm_dev = vop->drm_dev;
1549         struct drm_plane *plane, *tmp;
1550
1551         of_node_put(crtc->port);
1552
1553         /*
1554          * We need to cleanup the planes now.  Why?
1555          *
1556          * The planes are "&vop->win[i].base".  That means the memory is
1557          * all part of the big "struct vop" chunk of memory.  That memory
1558          * was devm allocated and associated with this component.  We need to
1559          * free it ourselves before vop_unbind() finishes.
1560          */
1561         list_for_each_entry_safe(plane, tmp, &drm_dev->mode_config.plane_list,
1562                                  head)
1563                 vop_plane_destroy(plane);
1564
1565         /*
1566          * Destroy CRTC after vop_plane_destroy() since vop_disable_plane()
1567          * references the CRTC.
1568          */
1569         drm_crtc_cleanup(crtc);
1570         drm_flip_work_cleanup(&vop->fb_unref_work);
1571 }
1572
1573 static int vop_initial(struct vop *vop)
1574 {
1575         const struct vop_data *vop_data = vop->data;
1576         struct reset_control *ahb_rst;
1577         int i, ret;
1578
1579         vop->hclk = devm_clk_get(vop->dev, "hclk_vop");
1580         if (IS_ERR(vop->hclk)) {
1581                 DRM_DEV_ERROR(vop->dev, "failed to get hclk source\n");
1582                 return PTR_ERR(vop->hclk);
1583         }
1584         vop->aclk = devm_clk_get(vop->dev, "aclk_vop");
1585         if (IS_ERR(vop->aclk)) {
1586                 DRM_DEV_ERROR(vop->dev, "failed to get aclk source\n");
1587                 return PTR_ERR(vop->aclk);
1588         }
1589         vop->dclk = devm_clk_get(vop->dev, "dclk_vop");
1590         if (IS_ERR(vop->dclk)) {
1591                 DRM_DEV_ERROR(vop->dev, "failed to get dclk source\n");
1592                 return PTR_ERR(vop->dclk);
1593         }
1594
1595         ret = pm_runtime_get_sync(vop->dev);
1596         if (ret < 0) {
1597                 DRM_DEV_ERROR(vop->dev, "failed to get pm runtime: %d\n", ret);
1598                 return ret;
1599         }
1600
1601         ret = clk_prepare(vop->dclk);
1602         if (ret < 0) {
1603                 DRM_DEV_ERROR(vop->dev, "failed to prepare dclk\n");
1604                 goto err_put_pm_runtime;
1605         }
1606
1607         /* Enable both the hclk and aclk to setup the vop */
1608         ret = clk_prepare_enable(vop->hclk);
1609         if (ret < 0) {
1610                 DRM_DEV_ERROR(vop->dev, "failed to prepare/enable hclk\n");
1611                 goto err_unprepare_dclk;
1612         }
1613
1614         ret = clk_prepare_enable(vop->aclk);
1615         if (ret < 0) {
1616                 DRM_DEV_ERROR(vop->dev, "failed to prepare/enable aclk\n");
1617                 goto err_disable_hclk;
1618         }
1619
1620         /*
1621          * do hclk_reset, reset all vop registers.
1622          */
1623         ahb_rst = devm_reset_control_get(vop->dev, "ahb");
1624         if (IS_ERR(ahb_rst)) {
1625                 DRM_DEV_ERROR(vop->dev, "failed to get ahb reset\n");
1626                 ret = PTR_ERR(ahb_rst);
1627                 goto err_disable_aclk;
1628         }
1629         reset_control_assert(ahb_rst);
1630         usleep_range(10, 20);
1631         reset_control_deassert(ahb_rst);
1632
1633         VOP_INTR_SET_TYPE(vop, clear, INTR_MASK, 1);
1634         VOP_INTR_SET_TYPE(vop, enable, INTR_MASK, 0);
1635
1636         for (i = 0; i < vop->len; i += sizeof(u32))
1637                 vop->regsbak[i / 4] = readl_relaxed(vop->regs + i);
1638
1639         VOP_REG_SET(vop, misc, global_regdone_en, 1);
1640         VOP_REG_SET(vop, common, dsp_blank, 0);
1641
1642         for (i = 0; i < vop_data->win_size; i++) {
1643                 const struct vop_win_data *win = &vop_data->win[i];
1644                 int channel = i * 2 + 1;
1645
1646                 VOP_WIN_SET(vop, win, channel, (channel + 1) << 4 | channel);
1647                 vop_win_disable(vop, win);
1648                 VOP_WIN_SET(vop, win, gate, 1);
1649         }
1650
1651         vop_cfg_done(vop);
1652
1653         /*
1654          * do dclk_reset, let all config take affect.
1655          */
1656         vop->dclk_rst = devm_reset_control_get(vop->dev, "dclk");
1657         if (IS_ERR(vop->dclk_rst)) {
1658                 DRM_DEV_ERROR(vop->dev, "failed to get dclk reset\n");
1659                 ret = PTR_ERR(vop->dclk_rst);
1660                 goto err_disable_aclk;
1661         }
1662         reset_control_assert(vop->dclk_rst);
1663         usleep_range(10, 20);
1664         reset_control_deassert(vop->dclk_rst);
1665
1666         clk_disable(vop->hclk);
1667         clk_disable(vop->aclk);
1668
1669         vop->is_enabled = false;
1670
1671         pm_runtime_put_sync(vop->dev);
1672
1673         return 0;
1674
1675 err_disable_aclk:
1676         clk_disable_unprepare(vop->aclk);
1677 err_disable_hclk:
1678         clk_disable_unprepare(vop->hclk);
1679 err_unprepare_dclk:
1680         clk_unprepare(vop->dclk);
1681 err_put_pm_runtime:
1682         pm_runtime_put_sync(vop->dev);
1683         return ret;
1684 }
1685
1686 /*
1687  * Initialize the vop->win array elements.
1688  */
1689 static void vop_win_init(struct vop *vop)
1690 {
1691         const struct vop_data *vop_data = vop->data;
1692         unsigned int i;
1693
1694         for (i = 0; i < vop_data->win_size; i++) {
1695                 struct vop_win *vop_win = &vop->win[i];
1696                 const struct vop_win_data *win_data = &vop_data->win[i];
1697
1698                 vop_win->data = win_data;
1699                 vop_win->vop = vop;
1700
1701                 if (vop_data->win_yuv2yuv)
1702                         vop_win->yuv2yuv_data = &vop_data->win_yuv2yuv[i];
1703         }
1704 }
1705
1706 /**
1707  * rockchip_drm_wait_vact_end
1708  * @crtc: CRTC to enable line flag
1709  * @mstimeout: millisecond for timeout
1710  *
1711  * Wait for vact_end line flag irq or timeout.
1712  *
1713  * Returns:
1714  * Zero on success, negative errno on failure.
1715  */
1716 int rockchip_drm_wait_vact_end(struct drm_crtc *crtc, unsigned int mstimeout)
1717 {
1718         struct vop *vop = to_vop(crtc);
1719         unsigned long jiffies_left;
1720         int ret = 0;
1721
1722         if (!crtc || !vop->is_enabled)
1723                 return -ENODEV;
1724
1725         mutex_lock(&vop->vop_lock);
1726         if (mstimeout <= 0) {
1727                 ret = -EINVAL;
1728                 goto out;
1729         }
1730
1731         if (vop_line_flag_irq_is_enabled(vop)) {
1732                 ret = -EBUSY;
1733                 goto out;
1734         }
1735
1736         reinit_completion(&vop->line_flag_completion);
1737         vop_line_flag_irq_enable(vop);
1738
1739         jiffies_left = wait_for_completion_timeout(&vop->line_flag_completion,
1740                                                    msecs_to_jiffies(mstimeout));
1741         vop_line_flag_irq_disable(vop);
1742
1743         if (jiffies_left == 0) {
1744                 DRM_DEV_ERROR(vop->dev, "Timeout waiting for IRQ\n");
1745                 ret = -ETIMEDOUT;
1746                 goto out;
1747         }
1748
1749 out:
1750         mutex_unlock(&vop->vop_lock);
1751         return ret;
1752 }
1753 EXPORT_SYMBOL(rockchip_drm_wait_vact_end);
1754
1755 static int vop_bind(struct device *dev, struct device *master, void *data)
1756 {
1757         struct platform_device *pdev = to_platform_device(dev);
1758         const struct vop_data *vop_data;
1759         struct drm_device *drm_dev = data;
1760         struct vop *vop;
1761         struct resource *res;
1762         int ret, irq;
1763
1764         vop_data = of_device_get_match_data(dev);
1765         if (!vop_data)
1766                 return -ENODEV;
1767
1768         /* Allocate vop struct and its vop_win array */
1769         vop = devm_kzalloc(dev, struct_size(vop, win, vop_data->win_size),
1770                            GFP_KERNEL);
1771         if (!vop)
1772                 return -ENOMEM;
1773
1774         vop->dev = dev;
1775         vop->data = vop_data;
1776         vop->drm_dev = drm_dev;
1777         dev_set_drvdata(dev, vop);
1778
1779         vop_win_init(vop);
1780
1781         res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1782         vop->len = resource_size(res);
1783         vop->regs = devm_ioremap_resource(dev, res);
1784         if (IS_ERR(vop->regs))
1785                 return PTR_ERR(vop->regs);
1786
1787         vop->regsbak = devm_kzalloc(dev, vop->len, GFP_KERNEL);
1788         if (!vop->regsbak)
1789                 return -ENOMEM;
1790
1791         irq = platform_get_irq(pdev, 0);
1792         if (irq < 0) {
1793                 DRM_DEV_ERROR(dev, "cannot find irq for vop\n");
1794                 return irq;
1795         }
1796         vop->irq = (unsigned int)irq;
1797
1798         spin_lock_init(&vop->reg_lock);
1799         spin_lock_init(&vop->irq_lock);
1800         mutex_init(&vop->vop_lock);
1801
1802         ret = vop_create_crtc(vop);
1803         if (ret)
1804                 return ret;
1805
1806         pm_runtime_enable(&pdev->dev);
1807
1808         ret = vop_initial(vop);
1809         if (ret < 0) {
1810                 DRM_DEV_ERROR(&pdev->dev,
1811                               "cannot initial vop dev - err %d\n", ret);
1812                 goto err_disable_pm_runtime;
1813         }
1814
1815         ret = devm_request_irq(dev, vop->irq, vop_isr,
1816                                IRQF_SHARED, dev_name(dev), vop);
1817         if (ret)
1818                 goto err_disable_pm_runtime;
1819
1820         if (vop->data->feature & VOP_FEATURE_INTERNAL_RGB) {
1821                 vop->rgb = rockchip_rgb_init(dev, &vop->crtc, vop->drm_dev);
1822                 if (IS_ERR(vop->rgb)) {
1823                         ret = PTR_ERR(vop->rgb);
1824                         goto err_disable_pm_runtime;
1825                 }
1826         }
1827
1828         return 0;
1829
1830 err_disable_pm_runtime:
1831         pm_runtime_disable(&pdev->dev);
1832         vop_destroy_crtc(vop);
1833         return ret;
1834 }
1835
1836 static void vop_unbind(struct device *dev, struct device *master, void *data)
1837 {
1838         struct vop *vop = dev_get_drvdata(dev);
1839
1840         if (vop->rgb)
1841                 rockchip_rgb_fini(vop->rgb);
1842
1843         pm_runtime_disable(dev);
1844         vop_destroy_crtc(vop);
1845
1846         clk_unprepare(vop->aclk);
1847         clk_unprepare(vop->hclk);
1848         clk_unprepare(vop->dclk);
1849 }
1850
1851 const struct component_ops vop_component_ops = {
1852         .bind = vop_bind,
1853         .unbind = vop_unbind,
1854 };
1855 EXPORT_SYMBOL_GPL(vop_component_ops);