drivers/gpu/drm/sti/sti_hqvdp.c

   1 /*
   2  * Copyright (C) STMicroelectronics SA 2014
   3  * Authors: Fabien Dessenne <fabien.dessenne@st.com> for STMicroelectronics.
   4  * License terms:  GNU General Public License (GPL), version 2
   5  */
   6
   7 #include <linux/component.h>
   8 #include <linux/firmware.h>
   9 #include <linux/reset.h>
  10 #include <linux/seq_file.h>
  11
  12 #include <drm/drm_atomic.h>
  13 #include <drm/drm_fb_cma_helper.h>
  14 #include <drm/drm_gem_cma_helper.h>
  15
  16 #include "sti_compositor.h"
  17 #include "sti_hqvdp_lut.h"
  18 #include "sti_plane.h"
  19 #include "sti_vtg.h"
  20 #include "sti_drv.h"
  21
  22 /* Firmware name */
  23 #define HQVDP_FMW_NAME          "hqvdp-stih407.bin"
  24
  25 /* Regs address */
  26 #define HQVDP_DMEM              0x00000000               /* 0x00000000 */
  27 #define HQVDP_PMEM              0x00040000               /* 0x00040000 */
  28 #define HQVDP_RD_PLUG           0x000E0000               /* 0x000E0000 */
  29 #define HQVDP_RD_PLUG_CONTROL   (HQVDP_RD_PLUG + 0x1000) /* 0x000E1000 */
  30 #define HQVDP_RD_PLUG_PAGE_SIZE (HQVDP_RD_PLUG + 0x1004) /* 0x000E1004 */
  31 #define HQVDP_RD_PLUG_MIN_OPC   (HQVDP_RD_PLUG + 0x1008) /* 0x000E1008 */
  32 #define HQVDP_RD_PLUG_MAX_OPC   (HQVDP_RD_PLUG + 0x100C) /* 0x000E100C */
  33 #define HQVDP_RD_PLUG_MAX_CHK   (HQVDP_RD_PLUG + 0x1010) /* 0x000E1010 */
  34 #define HQVDP_RD_PLUG_MAX_MSG   (HQVDP_RD_PLUG + 0x1014) /* 0x000E1014 */
  35 #define HQVDP_RD_PLUG_MIN_SPACE (HQVDP_RD_PLUG + 0x1018) /* 0x000E1018 */
  36 #define HQVDP_WR_PLUG           0x000E2000               /* 0x000E2000 */
  37 #define HQVDP_WR_PLUG_CONTROL   (HQVDP_WR_PLUG + 0x1000) /* 0x000E3000 */
  38 #define HQVDP_WR_PLUG_PAGE_SIZE (HQVDP_WR_PLUG + 0x1004) /* 0x000E3004 */
  39 #define HQVDP_WR_PLUG_MIN_OPC   (HQVDP_WR_PLUG + 0x1008) /* 0x000E3008 */
  40 #define HQVDP_WR_PLUG_MAX_OPC   (HQVDP_WR_PLUG + 0x100C) /* 0x000E300C */
  41 #define HQVDP_WR_PLUG_MAX_CHK   (HQVDP_WR_PLUG + 0x1010) /* 0x000E3010 */
  42 #define HQVDP_WR_PLUG_MAX_MSG   (HQVDP_WR_PLUG + 0x1014) /* 0x000E3014 */
  43 #define HQVDP_WR_PLUG_MIN_SPACE (HQVDP_WR_PLUG + 0x1018) /* 0x000E3018 */
  44 #define HQVDP_MBX               0x000E4000               /* 0x000E4000 */
  45 #define HQVDP_MBX_IRQ_TO_XP70   (HQVDP_MBX + 0x0000)     /* 0x000E4000 */
  46 #define HQVDP_MBX_INFO_HOST     (HQVDP_MBX + 0x0004)     /* 0x000E4004 */
  47 #define HQVDP_MBX_IRQ_TO_HOST   (HQVDP_MBX + 0x0008)     /* 0x000E4008 */
  48 #define HQVDP_MBX_INFO_XP70     (HQVDP_MBX + 0x000C)     /* 0x000E400C */
  49 #define HQVDP_MBX_SW_RESET_CTRL (HQVDP_MBX + 0x0010)     /* 0x000E4010 */
  50 #define HQVDP_MBX_STARTUP_CTRL1 (HQVDP_MBX + 0x0014)     /* 0x000E4014 */
  51 #define HQVDP_MBX_STARTUP_CTRL2 (HQVDP_MBX + 0x0018)     /* 0x000E4018 */
  52 #define HQVDP_MBX_GP_STATUS     (HQVDP_MBX + 0x001C)     /* 0x000E401C */
  53 #define HQVDP_MBX_NEXT_CMD      (HQVDP_MBX + 0x0020)     /* 0x000E4020 */
  54 #define HQVDP_MBX_CURRENT_CMD   (HQVDP_MBX + 0x0024)     /* 0x000E4024 */
  55 #define HQVDP_MBX_SOFT_VSYNC    (HQVDP_MBX + 0x0028)     /* 0x000E4028 */
  56
  57 /* Plugs config */
  58 #define PLUG_CONTROL_ENABLE     0x00000001
  59 #define PLUG_PAGE_SIZE_256      0x00000002
  60 #define PLUG_MIN_OPC_8          0x00000003
  61 #define PLUG_MAX_OPC_64         0x00000006
  62 #define PLUG_MAX_CHK_2X         0x00000001
  63 #define PLUG_MAX_MSG_1X         0x00000000
  64 #define PLUG_MIN_SPACE_1        0x00000000
  65
  66 /* SW reset CTRL */
  67 #define SW_RESET_CTRL_FULL      BIT(0)
  68 #define SW_RESET_CTRL_CORE      BIT(1)
  69
  70 /* Startup ctrl 1 */
  71 #define STARTUP_CTRL1_RST_DONE  BIT(0)
  72 #define STARTUP_CTRL1_AUTH_IDLE BIT(2)
  73
  74 /* Startup ctrl 2 */
  75 #define STARTUP_CTRL2_FETCH_EN  BIT(1)
  76
  77 /* Info xP70 */
  78 #define INFO_XP70_FW_READY      BIT(15)
  79 #define INFO_XP70_FW_PROCESSING BIT(14)
  80 #define INFO_XP70_FW_INITQUEUES BIT(13)
  81
  82 /* SOFT_VSYNC */
  83 #define SOFT_VSYNC_HW           0x00000000
  84 #define SOFT_VSYNC_SW_CMD       0x00000001
  85 #define SOFT_VSYNC_SW_CTRL_IRQ  0x00000003
  86
  87 /* Reset & boot poll config */
  88 #define POLL_MAX_ATTEMPT        50
  89 #define POLL_DELAY_MS           20
  90
  91 #define SCALE_FACTOR            8192
  92 #define SCALE_MAX_FOR_LEG_LUT_F 4096
  93 #define SCALE_MAX_FOR_LEG_LUT_E 4915
  94 #define SCALE_MAX_FOR_LEG_LUT_D 6654
  95 #define SCALE_MAX_FOR_LEG_LUT_C 8192
  96
  97 enum sti_hvsrc_orient {
  98         HVSRC_HORI,
  99         HVSRC_VERT
 100 };
 101
 102 /* Command structures */
 103 struct sti_hqvdp_top {
 104         u32 config;
 105         u32 mem_format;
 106         u32 current_luma;
 107         u32 current_enh_luma;
 108         u32 current_right_luma;
 109         u32 current_enh_right_luma;
 110         u32 current_chroma;
 111         u32 current_enh_chroma;
 112         u32 current_right_chroma;
 113         u32 current_enh_right_chroma;
 114         u32 output_luma;
 115         u32 output_chroma;
 116         u32 luma_src_pitch;
 117         u32 luma_enh_src_pitch;
 118         u32 luma_right_src_pitch;
 119         u32 luma_enh_right_src_pitch;
 120         u32 chroma_src_pitch;
 121         u32 chroma_enh_src_pitch;
 122         u32 chroma_right_src_pitch;
 123         u32 chroma_enh_right_src_pitch;
 124         u32 luma_processed_pitch;
 125         u32 chroma_processed_pitch;
 126         u32 input_frame_size;
 127         u32 input_viewport_ori;
 128         u32 input_viewport_ori_right;
 129         u32 input_viewport_size;
 130         u32 left_view_border_width;
 131         u32 right_view_border_width;
 132         u32 left_view_3d_offset_width;
 133         u32 right_view_3d_offset_width;
 134         u32 side_stripe_color;
 135         u32 crc_reset_ctrl;
 136 };
 137
 138 /* Configs for interlaced : no IT, no pass thru, 3 fields */
 139 #define TOP_CONFIG_INTER_BTM            0x00000000
 140 #define TOP_CONFIG_INTER_TOP            0x00000002
 141
 142 /* Config for progressive : no IT, no pass thru, 3 fields */
 143 #define TOP_CONFIG_PROGRESSIVE          0x00000001
 144
 145 /* Default MemFormat: in=420_raster_dual out=444_raster;opaque Mem2Tv mode */
 146 #define TOP_MEM_FORMAT_DFLT             0x00018060
 147
 148 /* Min/Max size */
 149 #define MAX_WIDTH                       0x1FFF
 150 #define MAX_HEIGHT                      0x0FFF
 151 #define MIN_WIDTH                       0x0030
 152 #define MIN_HEIGHT                      0x0010
 153
 154 struct sti_hqvdp_vc1re {
 155         u32 ctrl_prv_csdi;
 156         u32 ctrl_cur_csdi;
 157         u32 ctrl_nxt_csdi;
 158         u32 ctrl_cur_fmd;
 159         u32 ctrl_nxt_fmd;
 160 };
 161
 162 struct sti_hqvdp_fmd {
 163         u32 config;
 164         u32 viewport_ori;
 165         u32 viewport_size;
 166         u32 next_next_luma;
 167         u32 next_next_right_luma;
 168         u32 next_next_next_luma;
 169         u32 next_next_next_right_luma;
 170         u32 threshold_scd;
 171         u32 threshold_rfd;
 172         u32 threshold_move;
 173         u32 threshold_cfd;
 174 };
 175
 176 struct sti_hqvdp_csdi {
 177         u32 config;
 178         u32 config2;
 179         u32 dcdi_config;
 180         u32 prev_luma;
 181         u32 prev_enh_luma;
 182         u32 prev_right_luma;
 183         u32 prev_enh_right_luma;
 184         u32 next_luma;
 185         u32 next_enh_luma;
 186         u32 next_right_luma;
 187         u32 next_enh_right_luma;
 188         u32 prev_chroma;
 189         u32 prev_enh_chroma;
 190         u32 prev_right_chroma;
 191         u32 prev_enh_right_chroma;
 192         u32 next_chroma;
 193         u32 next_enh_chroma;
 194         u32 next_right_chroma;
 195         u32 next_enh_right_chroma;
 196         u32 prev_motion;
 197         u32 prev_right_motion;
 198         u32 cur_motion;
 199         u32 cur_right_motion;
 200         u32 next_motion;
 201         u32 next_right_motion;
 202 };
 203
 204 /* Config for progressive: by pass */
 205 #define CSDI_CONFIG_PROG                0x00000000
 206 /* Config for directional deinterlacing without motion */
 207 #define CSDI_CONFIG_INTER_DIR           0x00000016
 208 /* Additional configs for fader, blender, motion,... deinterlace algorithms */
 209 #define CSDI_CONFIG2_DFLT               0x000001B3
 210 #define CSDI_DCDI_CONFIG_DFLT           0x00203803
 211
 212 struct sti_hqvdp_hvsrc {
 213         u32 hor_panoramic_ctrl;
 214         u32 output_picture_size;
 215         u32 init_horizontal;
 216         u32 init_vertical;
 217         u32 param_ctrl;
 218         u32 yh_coef[NB_COEF];
 219         u32 ch_coef[NB_COEF];
 220         u32 yv_coef[NB_COEF];
 221         u32 cv_coef[NB_COEF];
 222         u32 hori_shift;
 223         u32 vert_shift;
 224 };
 225
 226 /* Default ParamCtrl: all controls enabled */
 227 #define HVSRC_PARAM_CTRL_DFLT           0xFFFFFFFF
 228
 229 struct sti_hqvdp_iqi {
 230         u32 config;
 231         u32 demo_wind_size;
 232         u32 pk_config;
 233         u32 coeff0_coeff1;
 234         u32 coeff2_coeff3;
 235         u32 coeff4;
 236         u32 pk_lut;
 237         u32 pk_gain;
 238         u32 pk_coring_level;
 239         u32 cti_config;
 240         u32 le_config;
 241         u32 le_lut[64];
 242         u32 con_bri;
 243         u32 sat_gain;
 244         u32 pxf_conf;
 245         u32 default_color;
 246 };
 247
 248 /* Default Config : IQI bypassed */
 249 #define IQI_CONFIG_DFLT                 0x00000001
 250 /* Default Contrast & Brightness gain = 256 */
 251 #define IQI_CON_BRI_DFLT                0x00000100
 252 /* Default Saturation gain = 256 */
 253 #define IQI_SAT_GAIN_DFLT               0x00000100
 254 /* Default PxfConf : P2I bypassed */
 255 #define IQI_PXF_CONF_DFLT               0x00000001
 256
 257 struct sti_hqvdp_top_status {
 258         u32 processing_time;
 259         u32 input_y_crc;
 260         u32 input_uv_crc;
 261 };
 262
 263 struct sti_hqvdp_fmd_status {
 264         u32 fmd_repeat_move_status;
 265         u32 fmd_scene_count_status;
 266         u32 cfd_sum;
 267         u32 field_sum;
 268         u32 next_y_fmd_crc;
 269         u32 next_next_y_fmd_crc;
 270         u32 next_next_next_y_fmd_crc;
 271 };
 272
 273 struct sti_hqvdp_csdi_status {
 274         u32 prev_y_csdi_crc;
 275         u32 cur_y_csdi_crc;
 276         u32 next_y_csdi_crc;
 277         u32 prev_uv_csdi_crc;
 278         u32 cur_uv_csdi_crc;
 279         u32 next_uv_csdi_crc;
 280         u32 y_csdi_crc;
 281         u32 uv_csdi_crc;
 282         u32 uv_cup_crc;
 283         u32 mot_csdi_crc;
 284         u32 mot_cur_csdi_crc;
 285         u32 mot_prev_csdi_crc;
 286 };
 287
 288 struct sti_hqvdp_hvsrc_status {
 289         u32 y_hvsrc_crc;
 290         u32 u_hvsrc_crc;
 291         u32 v_hvsrc_crc;
 292 };
 293
 294 struct sti_hqvdp_iqi_status {
 295         u32 pxf_it_status;
 296         u32 y_iqi_crc;
 297         u32 u_iqi_crc;
 298         u32 v_iqi_crc;
 299 };
 300
 301 /* Main commands. We use 2 commands one being processed by the firmware, one
 302  * ready to be fetched upon next Vsync*/
 303 #define NB_VDP_CMD      2
 304
 305 struct sti_hqvdp_cmd {
 306         struct sti_hqvdp_top top;
 307         struct sti_hqvdp_vc1re vc1re;
 308         struct sti_hqvdp_fmd fmd;
 309         struct sti_hqvdp_csdi csdi;
 310         struct sti_hqvdp_hvsrc hvsrc;
 311         struct sti_hqvdp_iqi iqi;
 312         struct sti_hqvdp_top_status top_status;
 313         struct sti_hqvdp_fmd_status fmd_status;
 314         struct sti_hqvdp_csdi_status csdi_status;
 315         struct sti_hqvdp_hvsrc_status hvsrc_status;
 316         struct sti_hqvdp_iqi_status iqi_status;
 317 };
 318
 319 /*
 320  * STI HQVDP structure
 321  *
 322  * @dev:               driver device
 323  * @drm_dev:           the drm device
 324  * @regs:              registers
 325  * @plane:             plane structure for hqvdp it self
 326  * @clk:               IP clock
 327  * @clk_pix_main:      pix main clock
 328  * @reset:             reset control
 329  * @vtg_nb:            notifier to handle VTG Vsync
 330  * @btm_field_pending: is there any bottom field (interlaced frame) to display
 331  * @hqvdp_cmd:         buffer of commands
 332  * @hqvdp_cmd_paddr:   physical address of hqvdp_cmd
 333  * @vtg:               vtg for main data path
 334  * @xp70_initialized:  true if xp70 is already initialized
 335  * @vtg_registered:    true if registered to VTG
 336  */
 337 struct sti_hqvdp {
 338         struct device *dev;
 339         struct drm_device *drm_dev;
 340         void __iomem *regs;
 341         struct sti_plane plane;
 342         struct clk *clk;
 343         struct clk *clk_pix_main;
 344         struct reset_control *reset;
 345         struct notifier_block vtg_nb;
 346         bool btm_field_pending;
 347         void *hqvdp_cmd;
 348         u32 hqvdp_cmd_paddr;
 349         struct sti_vtg *vtg;
 350         bool xp70_initialized;
 351         bool vtg_registered;
 352 };
 353
 354 #define to_sti_hqvdp(x) container_of(x, struct sti_hqvdp, plane)
 355
 356 static const uint32_t hqvdp_supported_formats[] = {
 357         DRM_FORMAT_NV12,
 358 };
 359
 360 /**
 361  * sti_hqvdp_get_free_cmd
 362  * @hqvdp: hqvdp structure
 363  *
 364  * Look for a hqvdp_cmd that is not being used (or about to be used) by the FW.
 365  *
 366  * RETURNS:
 367  * the offset of the command to be used.
 368  * -1 in error cases
 369  */
 370 static int sti_hqvdp_get_free_cmd(struct sti_hqvdp *hqvdp)
 371 {
 372         u32 curr_cmd, next_cmd;
 373         u32 cmd = hqvdp->hqvdp_cmd_paddr;
 374         int i;
 375
 376         curr_cmd = readl(hqvdp->regs + HQVDP_MBX_CURRENT_CMD);
 377         next_cmd = readl(hqvdp->regs + HQVDP_MBX_NEXT_CMD);
 378
 379         for (i = 0; i < NB_VDP_CMD; i++) {
 380                 if ((cmd != curr_cmd) && (cmd != next_cmd))
 381                         return i * sizeof(struct sti_hqvdp_cmd);
 382                 cmd += sizeof(struct sti_hqvdp_cmd);
 383         }
 384
 385         return -1;
 386 }
 387
 388 /**
 389  * sti_hqvdp_get_curr_cmd
 390  * @hqvdp: hqvdp structure
 391  *
 392  * Look for the hqvdp_cmd that is being used by the FW.
 393  *
 394  * RETURNS:
 395  *  the offset of the command to be used.
 396  * -1 in error cases
 397  */
 398 static int sti_hqvdp_get_curr_cmd(struct sti_hqvdp *hqvdp)
 399 {
 400         u32 curr_cmd;
 401         u32 cmd = hqvdp->hqvdp_cmd_paddr;
 402         unsigned int i;
 403
 404         curr_cmd = readl(hqvdp->regs + HQVDP_MBX_CURRENT_CMD);
 405
 406         for (i = 0; i < NB_VDP_CMD; i++) {
 407                 if (cmd == curr_cmd)
 408                         return i * sizeof(struct sti_hqvdp_cmd);
 409
 410                 cmd += sizeof(struct sti_hqvdp_cmd);
 411         }
 412
 413         return -1;
 414 }
 415
 416 /**
 417  * sti_hqvdp_get_next_cmd
 418  * @hqvdp: hqvdp structure
 419  *
 420  * Look for the next hqvdp_cmd that will be used by the FW.
 421  *
 422  * RETURNS:
 423  *  the offset of the next command that will be used.
 424  * -1 in error cases
 425  */
 426 static int sti_hqvdp_get_next_cmd(struct sti_hqvdp *hqvdp)
 427 {
 428         int next_cmd;
 429         dma_addr_t cmd = hqvdp->hqvdp_cmd_paddr;
 430         unsigned int i;
 431
 432         next_cmd = readl(hqvdp->regs + HQVDP_MBX_NEXT_CMD);
 433
 434         for (i = 0; i < NB_VDP_CMD; i++) {
 435                 if (cmd == next_cmd)
 436                         return i * sizeof(struct sti_hqvdp_cmd);
 437
 438                 cmd += sizeof(struct sti_hqvdp_cmd);
 439         }
 440
 441         return -1;
 442 }
 443
 444 #define DBGFS_DUMP(reg) seq_printf(s, "\n  %-25s 0x%08X", #reg, \
 445                                    readl(hqvdp->regs + reg))
 446
 447 static const char *hqvdp_dbg_get_lut(u32 *coef)
 448 {
 449         if (!memcmp(coef, coef_lut_a_legacy, 16))
 450                 return "LUT A";
 451         if (!memcmp(coef, coef_lut_b, 16))
 452                 return "LUT B";
 453         if (!memcmp(coef, coef_lut_c_y_legacy, 16))
 454                 return "LUT C Y";
 455         if (!memcmp(coef, coef_lut_c_c_legacy, 16))
 456                 return "LUT C C";
 457         if (!memcmp(coef, coef_lut_d_y_legacy, 16))
 458                 return "LUT D Y";
 459         if (!memcmp(coef, coef_lut_d_c_legacy, 16))
 460                 return "LUT D C";
 461         if (!memcmp(coef, coef_lut_e_y_legacy, 16))
 462                 return "LUT E Y";
 463         if (!memcmp(coef, coef_lut_e_c_legacy, 16))
 464                 return "LUT E C";
 465         if (!memcmp(coef, coef_lut_f_y_legacy, 16))
 466                 return "LUT F Y";
 467         if (!memcmp(coef, coef_lut_f_c_legacy, 16))
 468                 return "LUT F C";
 469         return "<UNKNOWN>";
 470 }
 471
 472 static void hqvdp_dbg_dump_cmd(struct seq_file *s, struct sti_hqvdp_cmd *c)
 473 {
 474         int src_w, src_h, dst_w, dst_h;
 475
 476         seq_puts(s, "\n\tTOP:");
 477         seq_printf(s, "\n\t %-20s 0x%08X", "Config", c->top.config);
 478         switch (c->top.config) {
 479         case TOP_CONFIG_PROGRESSIVE:
 480                 seq_puts(s, "\tProgressive");
 481                 break;
 482         case TOP_CONFIG_INTER_TOP:
 483                 seq_puts(s, "\tInterlaced, top field");
 484                 break;
 485         case TOP_CONFIG_INTER_BTM:
 486                 seq_puts(s, "\tInterlaced, bottom field");
 487                 break;
 488         default:
 489                 seq_puts(s, "\t<UNKNOWN>");
 490                 break;
 491         }
 492
 493         seq_printf(s, "\n\t %-20s 0x%08X", "MemFormat", c->top.mem_format);
 494         seq_printf(s, "\n\t %-20s 0x%08X", "CurrentY", c->top.current_luma);
 495         seq_printf(s, "\n\t %-20s 0x%08X", "CurrentC", c->top.current_chroma);
 496         seq_printf(s, "\n\t %-20s 0x%08X", "YSrcPitch", c->top.luma_src_pitch);
 497         seq_printf(s, "\n\t %-20s 0x%08X", "CSrcPitch",
 498                    c->top.chroma_src_pitch);
 499         seq_printf(s, "\n\t %-20s 0x%08X", "InputFrameSize",
 500                    c->top.input_frame_size);
 501         seq_printf(s, "\t%dx%d",
 502                    c->top.input_frame_size & 0x0000FFFF,
 503                    c->top.input_frame_size >> 16);
 504         seq_printf(s, "\n\t %-20s 0x%08X", "InputViewportSize",
 505                    c->top.input_viewport_size);
 506         src_w = c->top.input_viewport_size & 0x0000FFFF;
 507         src_h = c->top.input_viewport_size >> 16;
 508         seq_printf(s, "\t%dx%d", src_w, src_h);
 509
 510         seq_puts(s, "\n\tHVSRC:");
 511         seq_printf(s, "\n\t %-20s 0x%08X", "OutputPictureSize",
 512                    c->hvsrc.output_picture_size);
 513         dst_w = c->hvsrc.output_picture_size & 0x0000FFFF;
 514         dst_h = c->hvsrc.output_picture_size >> 16;
 515         seq_printf(s, "\t%dx%d", dst_w, dst_h);
 516         seq_printf(s, "\n\t %-20s 0x%08X", "ParamCtrl", c->hvsrc.param_ctrl);
 517
 518         seq_printf(s, "\n\t %-20s %s", "yh_coef",
 519                    hqvdp_dbg_get_lut(c->hvsrc.yh_coef));
 520         seq_printf(s, "\n\t %-20s %s", "ch_coef",
 521                    hqvdp_dbg_get_lut(c->hvsrc.ch_coef));
 522         seq_printf(s, "\n\t %-20s %s", "yv_coef",
 523                    hqvdp_dbg_get_lut(c->hvsrc.yv_coef));
 524         seq_printf(s, "\n\t %-20s %s", "cv_coef",
 525                    hqvdp_dbg_get_lut(c->hvsrc.cv_coef));
 526
 527         seq_printf(s, "\n\t %-20s", "ScaleH");
 528         if (dst_w > src_w)
 529                 seq_printf(s, " %d/1", dst_w / src_w);
 530         else
 531                 seq_printf(s, " 1/%d", src_w / dst_w);
 532
 533         seq_printf(s, "\n\t %-20s", "tScaleV");
 534         if (dst_h > src_h)
 535                 seq_printf(s, " %d/1", dst_h / src_h);
 536         else
 537                 seq_printf(s, " 1/%d", src_h / dst_h);
 538
 539         seq_puts(s, "\n\tCSDI:");
 540         seq_printf(s, "\n\t %-20s 0x%08X\t", "Config", c->csdi.config);
 541         switch (c->csdi.config) {
 542         case CSDI_CONFIG_PROG:
 543                 seq_puts(s, "Bypass");
 544                 break;
 545         case CSDI_CONFIG_INTER_DIR:
 546                 seq_puts(s, "Deinterlace, directional");
 547                 break;
 548         default:
 549                 seq_puts(s, "<UNKNOWN>");
 550                 break;
 551         }
 552
 553         seq_printf(s, "\n\t %-20s 0x%08X", "Config2", c->csdi.config2);
 554         seq_printf(s, "\n\t %-20s 0x%08X", "DcdiConfig", c->csdi.dcdi_config);
 555 }
 556
 557 static int hqvdp_dbg_show(struct seq_file *s, void *data)
 558 {
 559         struct drm_info_node *node = s->private;
 560         struct sti_hqvdp *hqvdp = (struct sti_hqvdp *)node->info_ent->data;
 561         int cmd, cmd_offset, infoxp70;
 562         void *virt;
 563
 564         seq_printf(s, "%s: (vaddr = 0x%p)",
 565                    sti_plane_to_str(&hqvdp->plane), hqvdp->regs);
 566
 567         DBGFS_DUMP(HQVDP_MBX_IRQ_TO_XP70);
 568         DBGFS_DUMP(HQVDP_MBX_INFO_HOST);
 569         DBGFS_DUMP(HQVDP_MBX_IRQ_TO_HOST);
 570         DBGFS_DUMP(HQVDP_MBX_INFO_XP70);
 571         infoxp70 = readl(hqvdp->regs + HQVDP_MBX_INFO_XP70);
 572         seq_puts(s, "\tFirmware state: ");
 573         if (infoxp70 & INFO_XP70_FW_READY)
 574                 seq_puts(s, "idle and ready");
 575         else if (infoxp70 & INFO_XP70_FW_PROCESSING)
 576                 seq_puts(s, "processing a picture");
 577         else if (infoxp70 & INFO_XP70_FW_INITQUEUES)
 578                 seq_puts(s, "programming queues");
 579         else
 580                 seq_puts(s, "NOT READY");
 581
 582         DBGFS_DUMP(HQVDP_MBX_SW_RESET_CTRL);
 583         DBGFS_DUMP(HQVDP_MBX_STARTUP_CTRL1);
 584         if (readl(hqvdp->regs + HQVDP_MBX_STARTUP_CTRL1)
 585                                         & STARTUP_CTRL1_RST_DONE)
 586                 seq_puts(s, "\tReset is done");
 587         else
 588                 seq_puts(s, "\tReset is NOT done");
 589         DBGFS_DUMP(HQVDP_MBX_STARTUP_CTRL2);
 590         if (readl(hqvdp->regs + HQVDP_MBX_STARTUP_CTRL2)
 591                                         & STARTUP_CTRL2_FETCH_EN)
 592                 seq_puts(s, "\tFetch is enabled");
 593         else
 594                 seq_puts(s, "\tFetch is NOT enabled");
 595         DBGFS_DUMP(HQVDP_MBX_GP_STATUS);
 596         DBGFS_DUMP(HQVDP_MBX_NEXT_CMD);
 597         DBGFS_DUMP(HQVDP_MBX_CURRENT_CMD);
 598         DBGFS_DUMP(HQVDP_MBX_SOFT_VSYNC);
 599         if (!(readl(hqvdp->regs + HQVDP_MBX_SOFT_VSYNC) & 3))
 600                 seq_puts(s, "\tHW Vsync");
 601         else
 602                 seq_puts(s, "\tSW Vsync ?!?!");
 603
 604         /* Last command */
 605         cmd = readl(hqvdp->regs + HQVDP_MBX_CURRENT_CMD);
 606         cmd_offset = sti_hqvdp_get_curr_cmd(hqvdp);
 607         if (cmd_offset == -1) {
 608                 seq_puts(s, "\n\n  Last command: unknown");
 609         } else {
 610                 virt = hqvdp->hqvdp_cmd + cmd_offset;
 611                 seq_printf(s, "\n\n  Last command: address @ 0x%x (0x%p)",
 612                            cmd, virt);
 613                 hqvdp_dbg_dump_cmd(s, (struct sti_hqvdp_cmd *)virt);
 614         }
 615
 616         /* Next command */
 617         cmd = readl(hqvdp->regs + HQVDP_MBX_NEXT_CMD);
 618         cmd_offset = sti_hqvdp_get_next_cmd(hqvdp);
 619         if (cmd_offset == -1) {
 620                 seq_puts(s, "\n\n  Next command: unknown");
 621         } else {
 622                 virt = hqvdp->hqvdp_cmd + cmd_offset;
 623                 seq_printf(s, "\n\n  Next command address: @ 0x%x (0x%p)",
 624                            cmd, virt);
 625                 hqvdp_dbg_dump_cmd(s, (struct sti_hqvdp_cmd *)virt);
 626         }
 627
 628         seq_puts(s, "\n");
 629
 630         return 0;
 631 }
 632
 633 static struct drm_info_list hqvdp_debugfs_files[] = {
 634         { "hqvdp", hqvdp_dbg_show, 0, NULL },
 635 };
 636
 637 static int hqvdp_debugfs_init(struct sti_hqvdp *hqvdp, struct drm_minor *minor)
 638 {
 639         unsigned int i;
 640
 641         for (i = 0; i < ARRAY_SIZE(hqvdp_debugfs_files); i++)
 642                 hqvdp_debugfs_files[i].data = hqvdp;
 643
 644         return drm_debugfs_create_files(hqvdp_debugfs_files,
 645                                         ARRAY_SIZE(hqvdp_debugfs_files),
 646                                         minor->debugfs_root, minor);
 647 }
 648
 649 /**
 650  * sti_hqvdp_update_hvsrc
 651  * @orient: horizontal or vertical
 652  * @scale:  scaling/zoom factor
 653  * @hvsrc:  the structure containing the LUT coef
 654  *
 655  * Update the Y and C Lut coef, as well as the shift param
 656  *
 657  * RETURNS:
 658  * None.
 659  */
 660 static void sti_hqvdp_update_hvsrc(enum sti_hvsrc_orient orient, int scale,
 661                 struct sti_hqvdp_hvsrc *hvsrc)
 662 {
 663         const int *coef_c, *coef_y;
 664         int shift_c, shift_y;
 665
 666         /* Get the appropriate coef tables */
 667         if (scale < SCALE_MAX_FOR_LEG_LUT_F) {
 668                 coef_y = coef_lut_f_y_legacy;
 669                 coef_c = coef_lut_f_c_legacy;
 670                 shift_y = SHIFT_LUT_F_Y_LEGACY;
 671                 shift_c = SHIFT_LUT_F_C_LEGACY;
 672         } else if (scale < SCALE_MAX_FOR_LEG_LUT_E) {
 673                 coef_y = coef_lut_e_y_legacy;
 674                 coef_c = coef_lut_e_c_legacy;
 675                 shift_y = SHIFT_LUT_E_Y_LEGACY;
 676                 shift_c = SHIFT_LUT_E_C_LEGACY;
 677         } else if (scale < SCALE_MAX_FOR_LEG_LUT_D) {
 678                 coef_y = coef_lut_d_y_legacy;
 679                 coef_c = coef_lut_d_c_legacy;
 680                 shift_y = SHIFT_LUT_D_Y_LEGACY;
 681                 shift_c = SHIFT_LUT_D_C_LEGACY;
 682         } else if (scale < SCALE_MAX_FOR_LEG_LUT_C) {
 683                 coef_y = coef_lut_c_y_legacy;
 684                 coef_c = coef_lut_c_c_legacy;
 685                 shift_y = SHIFT_LUT_C_Y_LEGACY;
 686                 shift_c = SHIFT_LUT_C_C_LEGACY;
 687         } else if (scale == SCALE_MAX_FOR_LEG_LUT_C) {
 688                 coef_y = coef_c = coef_lut_b;
 689                 shift_y = shift_c = SHIFT_LUT_B;
 690         } else {
 691                 coef_y = coef_c = coef_lut_a_legacy;
 692                 shift_y = shift_c = SHIFT_LUT_A_LEGACY;
 693         }
 694
 695         if (orient == HVSRC_HORI) {
 696                 hvsrc->hori_shift = (shift_c << 16) | shift_y;
 697                 memcpy(hvsrc->yh_coef, coef_y, sizeof(hvsrc->yh_coef));
 698                 memcpy(hvsrc->ch_coef, coef_c, sizeof(hvsrc->ch_coef));
 699         } else {
 700                 hvsrc->vert_shift = (shift_c << 16) | shift_y;
 701                 memcpy(hvsrc->yv_coef, coef_y, sizeof(hvsrc->yv_coef));
 702                 memcpy(hvsrc->cv_coef, coef_c, sizeof(hvsrc->cv_coef));
 703         }
 704 }
 705
 706 /**
 707  * sti_hqvdp_check_hw_scaling
 708  * @hqvdp: hqvdp pointer
 709  * @mode: display mode with timing constraints
 710  * @src_w: source width
 711  * @src_h: source height
 712  * @dst_w: destination width
 713  * @dst_h: destination height
 714  *
 715  * Check if the HW is able to perform the scaling request
 716  * The firmware scaling limitation is "CEIL(1/Zy) <= FLOOR(LFW)" where:
 717  *   Zy = OutputHeight / InputHeight
 718  *   LFW = (Tx * IPClock) / (MaxNbCycles * Cp)
 719  *     Tx : Total video mode horizontal resolution
 720  *     IPClock : HQVDP IP clock (Mhz)
 721  *     MaxNbCycles: max(InputWidth, OutputWidth)
 722  *     Cp: Video mode pixel clock (Mhz)
 723  *
 724  * RETURNS:
 725  * True if the HW can scale.
 726  */
 727 static bool sti_hqvdp_check_hw_scaling(struct sti_hqvdp *hqvdp,
 728                                        struct drm_display_mode *mode,
 729                                        int src_w, int src_h,
 730                                        int dst_w, int dst_h)
 731 {
 732         unsigned long lfw;
 733         unsigned int inv_zy;
 734
 735         lfw = mode->htotal * (clk_get_rate(hqvdp->clk) / 1000000);
 736         lfw /= max(src_w, dst_w) * mode->clock / 1000;
 737
 738         inv_zy = DIV_ROUND_UP(src_h, dst_h);
 739
 740         return (inv_zy <= lfw) ? true : false;
 741 }
 742
 743 /**
 744  * sti_hqvdp_disable
 745  * @hqvdp: hqvdp pointer
 746  *
 747  * Disables the HQVDP plane
 748  */
 749 static void sti_hqvdp_disable(struct sti_hqvdp *hqvdp)
 750 {
 751         int i;
 752
 753         DRM_DEBUG_DRIVER("%s\n", sti_plane_to_str(&hqvdp->plane));
 754
 755         /* Unregister VTG Vsync callback */
 756         if (sti_vtg_unregister_client(hqvdp->vtg, &hqvdp->vtg_nb))
 757                 DRM_DEBUG_DRIVER("Warning: cannot unregister VTG notifier\n");
 758
 759         /* Set next cmd to NULL */
 760         writel(0, hqvdp->regs + HQVDP_MBX_NEXT_CMD);
 761
 762         for (i = 0; i < POLL_MAX_ATTEMPT; i++) {
 763                 if (readl(hqvdp->regs + HQVDP_MBX_INFO_XP70)
 764                                 & INFO_XP70_FW_READY)
 765                         break;
 766                 msleep(POLL_DELAY_MS);
 767         }
 768
 769         /* VTG can stop now */
 770         clk_disable_unprepare(hqvdp->clk_pix_main);
 771
 772         if (i == POLL_MAX_ATTEMPT)
 773                 DRM_ERROR("XP70 could not revert to idle\n");
 774
 775         hqvdp->plane.status = STI_PLANE_DISABLED;
 776         hqvdp->vtg_registered = false;
 777 }
 778
 779 /**
 780  * sti_vdp_vtg_cb
 781  * @nb: notifier block
 782  * @evt: event message
 783  * @data: private data
 784  *
 785  * Handle VTG Vsync event, display pending bottom field
 786  *
 787  * RETURNS:
 788  * 0 on success.
 789  */
 790 static int sti_hqvdp_vtg_cb(struct notifier_block *nb, unsigned long evt, void *data)
 791 {
 792         struct sti_hqvdp *hqvdp = container_of(nb, struct sti_hqvdp, vtg_nb);
 793         int btm_cmd_offset, top_cmd_offest;
 794         struct sti_hqvdp_cmd *btm_cmd, *top_cmd;
 795
 796         if ((evt != VTG_TOP_FIELD_EVENT) && (evt != VTG_BOTTOM_FIELD_EVENT)) {
 797                 DRM_DEBUG_DRIVER("Unknown event\n");
 798                 return 0;
 799         }
 800
 801         if (hqvdp->plane.status == STI_PLANE_FLUSHING) {
 802                 /* disable need to be synchronize on vsync event */
 803                 DRM_DEBUG_DRIVER("Vsync event received => disable %s\n",
 804                                  sti_plane_to_str(&hqvdp->plane));
 805
 806                 sti_hqvdp_disable(hqvdp);
 807         }
 808
 809         if (hqvdp->btm_field_pending) {
 810                 /* Create the btm field command from the current one */
 811                 btm_cmd_offset = sti_hqvdp_get_free_cmd(hqvdp);
 812                 top_cmd_offest = sti_hqvdp_get_curr_cmd(hqvdp);
 813                 if ((btm_cmd_offset == -1) || (top_cmd_offest == -1)) {
 814                         DRM_DEBUG_DRIVER("Warning: no cmd, will skip field\n");
 815                         return -EBUSY;
 816                 }
 817
 818                 btm_cmd = hqvdp->hqvdp_cmd + btm_cmd_offset;
 819                 top_cmd = hqvdp->hqvdp_cmd + top_cmd_offest;
 820
 821                 memcpy(btm_cmd, top_cmd, sizeof(*btm_cmd));
 822
 823                 btm_cmd->top.config = TOP_CONFIG_INTER_BTM;
 824                 btm_cmd->top.current_luma +=
 825                                 btm_cmd->top.luma_src_pitch / 2;
 826                 btm_cmd->top.current_chroma +=
 827                                 btm_cmd->top.chroma_src_pitch / 2;
 828
 829                 /* Post the command to mailbox */
 830                 writel(hqvdp->hqvdp_cmd_paddr + btm_cmd_offset,
 831                                 hqvdp->regs + HQVDP_MBX_NEXT_CMD);
 832
 833                 hqvdp->btm_field_pending = false;
 834
 835                 dev_dbg(hqvdp->dev, "%s Posted command:0x%x\n",
 836                                 __func__, hqvdp->hqvdp_cmd_paddr);
 837
 838                 sti_plane_update_fps(&hqvdp->plane, false, true);
 839         }
 840
 841         return 0;
 842 }
 843
 844 static void sti_hqvdp_init(struct sti_hqvdp *hqvdp)
 845 {
 846         int size;
 847         dma_addr_t dma_addr;
 848
 849         hqvdp->vtg_nb.notifier_call = sti_hqvdp_vtg_cb;
 850
 851         /* Allocate memory for the VDP commands */
 852         size = NB_VDP_CMD * sizeof(struct sti_hqvdp_cmd);
 853         hqvdp->hqvdp_cmd = dma_alloc_wc(hqvdp->dev, size,
 854                                         &dma_addr,
 855                                         GFP_KERNEL | GFP_DMA);
 856         if (!hqvdp->hqvdp_cmd) {
 857                 DRM_ERROR("Failed to allocate memory for VDP cmd\n");
 858                 return;
 859         }
 860
 861         hqvdp->hqvdp_cmd_paddr = (u32)dma_addr;
 862         memset(hqvdp->hqvdp_cmd, 0, size);
 863 }
 864
 865 static void sti_hqvdp_init_plugs(struct sti_hqvdp *hqvdp)
 866 {
 867         /* Configure Plugs (same for RD & WR) */
 868         writel(PLUG_PAGE_SIZE_256, hqvdp->regs + HQVDP_RD_PLUG_PAGE_SIZE);
 869         writel(PLUG_MIN_OPC_8, hqvdp->regs + HQVDP_RD_PLUG_MIN_OPC);
 870         writel(PLUG_MAX_OPC_64, hqvdp->regs + HQVDP_RD_PLUG_MAX_OPC);
 871         writel(PLUG_MAX_CHK_2X, hqvdp->regs + HQVDP_RD_PLUG_MAX_CHK);
 872         writel(PLUG_MAX_MSG_1X, hqvdp->regs + HQVDP_RD_PLUG_MAX_MSG);
 873         writel(PLUG_MIN_SPACE_1, hqvdp->regs + HQVDP_RD_PLUG_MIN_SPACE);
 874         writel(PLUG_CONTROL_ENABLE, hqvdp->regs + HQVDP_RD_PLUG_CONTROL);
 875
 876         writel(PLUG_PAGE_SIZE_256, hqvdp->regs + HQVDP_WR_PLUG_PAGE_SIZE);
 877         writel(PLUG_MIN_OPC_8, hqvdp->regs + HQVDP_WR_PLUG_MIN_OPC);
 878         writel(PLUG_MAX_OPC_64, hqvdp->regs + HQVDP_WR_PLUG_MAX_OPC);
 879         writel(PLUG_MAX_CHK_2X, hqvdp->regs + HQVDP_WR_PLUG_MAX_CHK);
 880         writel(PLUG_MAX_MSG_1X, hqvdp->regs + HQVDP_WR_PLUG_MAX_MSG);
 881         writel(PLUG_MIN_SPACE_1, hqvdp->regs + HQVDP_WR_PLUG_MIN_SPACE);
 882         writel(PLUG_CONTROL_ENABLE, hqvdp->regs + HQVDP_WR_PLUG_CONTROL);
 883 }
 884
 885 /**
 886  * sti_hqvdp_start_xp70
 887  * @hqvdp: hqvdp pointer
 888  *
 889  * Run the xP70 initialization sequence
 890  */
 891 static void sti_hqvdp_start_xp70(struct sti_hqvdp *hqvdp)
 892 {
 893         const struct firmware *firmware;
 894         u32 *fw_rd_plug, *fw_wr_plug, *fw_pmem, *fw_dmem;
 895         u8 *data;
 896         int i;
 897         struct fw_header {
 898                 int rd_size;
 899                 int wr_size;
 900                 int pmem_size;
 901                 int dmem_size;
 902         } *header;
 903
 904         DRM_DEBUG_DRIVER("\n");
 905
 906         if (hqvdp->xp70_initialized) {
 907                 DRM_DEBUG_DRIVER("HQVDP XP70 already initialized\n");
 908                 return;
 909         }
 910
 911         /* Request firmware */
 912         if (request_firmware(&firmware, HQVDP_FMW_NAME, hqvdp->dev)) {
 913                 DRM_ERROR("Can't get HQVDP firmware\n");
 914                 return;
 915         }
 916
 917         /* Check firmware parts */
 918         if (!firmware) {
 919                 DRM_ERROR("Firmware not available\n");
 920                 return;
 921         }
 922
 923         header = (struct fw_header *)firmware->data;
 924         if (firmware->size < sizeof(*header)) {
 925                 DRM_ERROR("Invalid firmware size (%d)\n", firmware->size);
 926                 goto out;
 927         }
 928         if ((sizeof(*header) + header->rd_size + header->wr_size +
 929                 header->pmem_size + header->dmem_size) != firmware->size) {
 930                 DRM_ERROR("Invalid fmw structure (%d+%d+%d+%d+%d != %d)\n",
 931                           sizeof(*header), header->rd_size, header->wr_size,
 932                           header->pmem_size, header->dmem_size,
 933                           firmware->size);
 934                 goto out;
 935         }
 936
 937         data = (u8 *)firmware->data;
 938         data += sizeof(*header);
 939         fw_rd_plug = (void *)data;
 940         data += header->rd_size;
 941         fw_wr_plug = (void *)data;
 942         data += header->wr_size;
 943         fw_pmem = (void *)data;
 944         data += header->pmem_size;
 945         fw_dmem = (void *)data;
 946
 947         /* Enable clock */
 948         if (clk_prepare_enable(hqvdp->clk))
 949                 DRM_ERROR("Failed to prepare/enable HQVDP clk\n");
 950
 951         /* Reset */
 952         writel(SW_RESET_CTRL_FULL, hqvdp->regs + HQVDP_MBX_SW_RESET_CTRL);
 953
 954         for (i = 0; i < POLL_MAX_ATTEMPT; i++) {
 955                 if (readl(hqvdp->regs + HQVDP_MBX_STARTUP_CTRL1)
 956                                 & STARTUP_CTRL1_RST_DONE)
 957                         break;
 958                 msleep(POLL_DELAY_MS);
 959         }
 960         if (i == POLL_MAX_ATTEMPT) {
 961                 DRM_ERROR("Could not reset\n");
 962                 goto out;
 963         }
 964
 965         /* Init Read & Write plugs */
 966         for (i = 0; i < header->rd_size / 4; i++)
 967                 writel(fw_rd_plug[i], hqvdp->regs + HQVDP_RD_PLUG + i * 4);
 968         for (i = 0; i < header->wr_size / 4; i++)
 969                 writel(fw_wr_plug[i], hqvdp->regs + HQVDP_WR_PLUG + i * 4);
 970
 971         sti_hqvdp_init_plugs(hqvdp);
 972
 973         /* Authorize Idle Mode */
 974         writel(STARTUP_CTRL1_AUTH_IDLE, hqvdp->regs + HQVDP_MBX_STARTUP_CTRL1);
 975
 976         /* Prevent VTG interruption during the boot */
 977         writel(SOFT_VSYNC_SW_CTRL_IRQ, hqvdp->regs + HQVDP_MBX_SOFT_VSYNC);
 978         writel(0, hqvdp->regs + HQVDP_MBX_NEXT_CMD);
 979
 980         /* Download PMEM & DMEM */
 981         for (i = 0; i < header->pmem_size / 4; i++)
 982                 writel(fw_pmem[i], hqvdp->regs + HQVDP_PMEM + i * 4);
 983         for (i = 0; i < header->dmem_size / 4; i++)
 984                 writel(fw_dmem[i], hqvdp->regs + HQVDP_DMEM + i * 4);
 985
 986         /* Enable fetch */
 987         writel(STARTUP_CTRL2_FETCH_EN, hqvdp->regs + HQVDP_MBX_STARTUP_CTRL2);
 988
 989         /* Wait end of boot */
 990         for (i = 0; i < POLL_MAX_ATTEMPT; i++) {
 991                 if (readl(hqvdp->regs + HQVDP_MBX_INFO_XP70)
 992                                 & INFO_XP70_FW_READY)
 993                         break;
 994                 msleep(POLL_DELAY_MS);
 995         }
 996         if (i == POLL_MAX_ATTEMPT) {
 997                 DRM_ERROR("Could not boot\n");
 998                 goto out;
 999         }
1000
1001         /* Launch Vsync */
1002         writel(SOFT_VSYNC_HW, hqvdp->regs + HQVDP_MBX_SOFT_VSYNC);
1003
1004         DRM_INFO("HQVDP XP70 initialized\n");
1005
1006         hqvdp->xp70_initialized = true;
1007
1008 out:
1009         release_firmware(firmware);
1010 }
1011
1012 static int sti_hqvdp_atomic_check(struct drm_plane *drm_plane,
1013                                   struct drm_plane_state *state)
1014 {
1015         struct sti_plane *plane = to_sti_plane(drm_plane);
1016         struct sti_hqvdp *hqvdp = to_sti_hqvdp(plane);
1017         struct drm_crtc *crtc = state->crtc;
1018         struct drm_framebuffer *fb = state->fb;
1019         struct drm_crtc_state *crtc_state;
1020         struct drm_display_mode *mode;
1021         int dst_x, dst_y, dst_w, dst_h;
1022         int src_x, src_y, src_w, src_h;
1023
1024         /* no need for further checks if the plane is being disabled */
1025         if (!crtc || !fb)
1026                 return 0;
1027
1028         crtc_state = drm_atomic_get_crtc_state(state->state, crtc);
1029         mode = &crtc_state->mode;
1030         dst_x = state->crtc_x;
1031         dst_y = state->crtc_y;
1032         dst_w = clamp_val(state->crtc_w, 0, mode->hdisplay - dst_x);
1033         dst_h = clamp_val(state->crtc_h, 0, mode->vdisplay - dst_y);
1034         /* src_x are in 16.16 format */
1035         src_x = state->src_x >> 16;
1036         src_y = state->src_y >> 16;
1037         src_w = state->src_w >> 16;
1038         src_h = state->src_h >> 16;
1039
1040         if (mode->clock && !sti_hqvdp_check_hw_scaling(hqvdp, mode,
1041                                                        src_w, src_h,
1042                                                        dst_w, dst_h)) {
1043                 DRM_ERROR("Scaling beyond HW capabilities\n");
1044                 return -EINVAL;
1045         }
1046
1047         if (!drm_fb_cma_get_gem_obj(fb, 0)) {
1048                 DRM_ERROR("Can't get CMA GEM object for fb\n");
1049                 return -EINVAL;
1050         }
1051
1052         /*
1053          * Input / output size
1054          * Align to upper even value
1055          */
1056         dst_w = ALIGN(dst_w, 2);
1057         dst_h = ALIGN(dst_h, 2);
1058
1059         if ((src_w > MAX_WIDTH) || (src_w < MIN_WIDTH) ||
1060             (src_h > MAX_HEIGHT) || (src_h < MIN_HEIGHT) ||
1061             (dst_w > MAX_WIDTH) || (dst_w < MIN_WIDTH) ||
1062             (dst_h > MAX_HEIGHT) || (dst_h < MIN_HEIGHT)) {
1063                 DRM_ERROR("Invalid in/out size %dx%d -> %dx%d\n",
1064                           src_w, src_h,
1065                           dst_w, dst_h);
1066                 return -EINVAL;
1067         }
1068
1069         if (!hqvdp->xp70_initialized)
1070                 /* Start HQVDP XP70 coprocessor */
1071                 sti_hqvdp_start_xp70(hqvdp);
1072
1073         if (!hqvdp->vtg_registered) {
1074                 /* Prevent VTG shutdown */
1075                 if (clk_prepare_enable(hqvdp->clk_pix_main)) {
1076                         DRM_ERROR("Failed to prepare/enable pix main clk\n");
1077                         return -EINVAL;
1078                 }
1079
1080                 /* Register VTG Vsync callback to handle bottom fields */
1081                 if (sti_vtg_register_client(hqvdp->vtg,
1082                                             &hqvdp->vtg_nb,
1083                                             crtc)) {
1084                         DRM_ERROR("Cannot register VTG notifier\n");
1085                         return -EINVAL;
1086                 }
1087                 hqvdp->vtg_registered = true;
1088         }
1089
1090         DRM_DEBUG_KMS("CRTC:%d (%s) drm plane:%d (%s)\n",
1091                       crtc->base.id, sti_mixer_to_str(to_sti_mixer(crtc)),
1092                       drm_plane->base.id, sti_plane_to_str(plane));
1093         DRM_DEBUG_KMS("%s dst=(%dx%d)@(%d,%d) - src=(%dx%d)@(%d,%d)\n",
1094                       sti_plane_to_str(plane),
1095                       dst_w, dst_h, dst_x, dst_y,
1096                       src_w, src_h, src_x, src_y);
1097
1098         return 0;
1099 }
1100
1101 static void sti_hqvdp_atomic_update(struct drm_plane *drm_plane,
1102                                     struct drm_plane_state *oldstate)
1103 {
1104         struct drm_plane_state *state = drm_plane->state;
1105         struct sti_plane *plane = to_sti_plane(drm_plane);
1106         struct sti_hqvdp *hqvdp = to_sti_hqvdp(plane);
1107         struct drm_crtc *crtc = state->crtc;
1108         struct drm_framebuffer *fb = state->fb;
1109         struct drm_display_mode *mode;
1110         int dst_x, dst_y, dst_w, dst_h;
1111         int src_x, src_y, src_w, src_h;
1112         struct drm_gem_cma_object *cma_obj;
1113         struct sti_hqvdp_cmd *cmd;
1114         int scale_h, scale_v;
1115         int cmd_offset;
1116
1117         if (!crtc || !fb)
1118                 return;
1119
1120         if ((oldstate->fb == state->fb) &&
1121             (oldstate->crtc_x == state->crtc_x) &&
1122             (oldstate->crtc_y == state->crtc_y) &&
1123             (oldstate->crtc_w == state->crtc_w) &&
1124             (oldstate->crtc_h == state->crtc_h) &&
1125             (oldstate->src_x == state->src_x) &&
1126             (oldstate->src_y == state->src_y) &&
1127             (oldstate->src_w == state->src_w) &&
1128             (oldstate->src_h == state->src_h)) {
1129                 /* No change since last update, do not post cmd */
1130                 DRM_DEBUG_DRIVER("No change, not posting cmd\n");
1131                 plane->status = STI_PLANE_UPDATED;
1132                 return;
1133         }
1134
1135         mode = &crtc->mode;
1136         dst_x = state->crtc_x;
1137         dst_y = state->crtc_y;
1138         dst_w = clamp_val(state->crtc_w, 0, mode->hdisplay - dst_x);
1139         dst_h = clamp_val(state->crtc_h, 0, mode->vdisplay - dst_y);
1140         /* src_x are in 16.16 format */
1141         src_x = state->src_x >> 16;
1142         src_y = state->src_y >> 16;
1143         src_w = state->src_w >> 16;
1144         src_h = state->src_h >> 16;
1145
1146         cmd_offset = sti_hqvdp_get_free_cmd(hqvdp);
1147         if (cmd_offset == -1) {
1148                 DRM_DEBUG_DRIVER("Warning: no cmd, will skip frame\n");
1149                 return;
1150         }
1151         cmd = hqvdp->hqvdp_cmd + cmd_offset;
1152
1153         /* Static parameters, defaulting to progressive mode */
1154         cmd->top.config = TOP_CONFIG_PROGRESSIVE;
1155         cmd->top.mem_format = TOP_MEM_FORMAT_DFLT;
1156         cmd->hvsrc.param_ctrl = HVSRC_PARAM_CTRL_DFLT;
1157         cmd->csdi.config = CSDI_CONFIG_PROG;
1158
1159         /* VC1RE, FMD bypassed : keep everything set to 0
1160          * IQI/P2I bypassed */
1161         cmd->iqi.config = IQI_CONFIG_DFLT;
1162         cmd->iqi.con_bri = IQI_CON_BRI_DFLT;
1163         cmd->iqi.sat_gain = IQI_SAT_GAIN_DFLT;
1164         cmd->iqi.pxf_conf = IQI_PXF_CONF_DFLT;
1165
1166         cma_obj = drm_fb_cma_get_gem_obj(fb, 0);
1167
1168         DRM_DEBUG_DRIVER("drm FB:%d format:%.4s phys@:0x%lx\n", fb->base.id,
1169                          (char *)&fb->format->format,
1170                          (unsigned long)cma_obj->paddr);
1171
1172         /* Buffer planes address */
1173         cmd->top.current_luma = (u32)cma_obj->paddr + fb->offsets[0];
1174         cmd->top.current_chroma = (u32)cma_obj->paddr + fb->offsets[1];
1175
1176         /* Pitches */
1177         cmd->top.luma_processed_pitch = fb->pitches[0];
1178         cmd->top.luma_src_pitch = fb->pitches[0];
1179         cmd->top.chroma_processed_pitch = fb->pitches[1];
1180         cmd->top.chroma_src_pitch = fb->pitches[1];
1181
1182         /* Input / output size
1183          * Align to upper even value */
1184         dst_w = ALIGN(dst_w, 2);
1185         dst_h = ALIGN(dst_h, 2);
1186
1187         cmd->top.input_viewport_size = src_h << 16 | src_w;
1188         cmd->top.input_frame_size = src_h << 16 | src_w;
1189         cmd->hvsrc.output_picture_size = dst_h << 16 | dst_w;
1190         cmd->top.input_viewport_ori = src_y << 16 | src_x;
1191
1192         /* Handle interlaced */
1193         if (fb->flags & DRM_MODE_FB_INTERLACED) {
1194                 /* Top field to display */
1195                 cmd->top.config = TOP_CONFIG_INTER_TOP;
1196
1197                 /* Update pitches and vert size */
1198                 cmd->top.input_frame_size = (src_h / 2) << 16 | src_w;
1199                 cmd->top.luma_processed_pitch *= 2;
1200                 cmd->top.luma_src_pitch *= 2;
1201                 cmd->top.chroma_processed_pitch *= 2;
1202                 cmd->top.chroma_src_pitch *= 2;
1203
1204                 /* Enable directional deinterlacing processing */
1205                 cmd->csdi.config = CSDI_CONFIG_INTER_DIR;
1206                 cmd->csdi.config2 = CSDI_CONFIG2_DFLT;
1207                 cmd->csdi.dcdi_config = CSDI_DCDI_CONFIG_DFLT;
1208         }
1209
1210         /* Update hvsrc lut coef */
1211         scale_h = SCALE_FACTOR * dst_w / src_w;
1212         sti_hqvdp_update_hvsrc(HVSRC_HORI, scale_h, &cmd->hvsrc);
1213
1214         scale_v = SCALE_FACTOR * dst_h / src_h;
1215         sti_hqvdp_update_hvsrc(HVSRC_VERT, scale_v, &cmd->hvsrc);
1216
1217         writel(hqvdp->hqvdp_cmd_paddr + cmd_offset,
1218                hqvdp->regs + HQVDP_MBX_NEXT_CMD);
1219
1220         /* Interlaced : get ready to display the bottom field at next Vsync */
1221         if (fb->flags & DRM_MODE_FB_INTERLACED)
1222                 hqvdp->btm_field_pending = true;
1223
1224         dev_dbg(hqvdp->dev, "%s Posted command:0x%x\n",
1225                 __func__, hqvdp->hqvdp_cmd_paddr + cmd_offset);
1226
1227         sti_plane_update_fps(plane, true, true);
1228
1229         plane->status = STI_PLANE_UPDATED;
1230 }
1231
1232 static void sti_hqvdp_atomic_disable(struct drm_plane *drm_plane,
1233                                      struct drm_plane_state *oldstate)
1234 {
1235         struct sti_plane *plane = to_sti_plane(drm_plane);
1236
1237         if (!oldstate->crtc) {
1238                 DRM_DEBUG_DRIVER("drm plane:%d not enabled\n",
1239                                  drm_plane->base.id);
1240                 return;
1241         }
1242
1243         DRM_DEBUG_DRIVER("CRTC:%d (%s) drm plane:%d (%s)\n",
1244                          oldstate->crtc->base.id,
1245                          sti_mixer_to_str(to_sti_mixer(oldstate->crtc)),
1246                          drm_plane->base.id, sti_plane_to_str(plane));
1247
1248         plane->status = STI_PLANE_DISABLING;
1249 }
1250
1251 static const struct drm_plane_helper_funcs sti_hqvdp_helpers_funcs = {
1252         .atomic_check = sti_hqvdp_atomic_check,
1253         .atomic_update = sti_hqvdp_atomic_update,
1254         .atomic_disable = sti_hqvdp_atomic_disable,
1255 };
1256
1257 static void sti_hqvdp_destroy(struct drm_plane *drm_plane)
1258 {
1259         DRM_DEBUG_DRIVER("\n");
1260
1261         drm_plane_helper_disable(drm_plane);
1262         drm_plane_cleanup(drm_plane);
1263 }
1264
1265 static int sti_hqvdp_late_register(struct drm_plane *drm_plane)
1266 {
1267         struct sti_plane *plane = to_sti_plane(drm_plane);
1268         struct sti_hqvdp *hqvdp = to_sti_hqvdp(plane);
1269
1270         return hqvdp_debugfs_init(hqvdp, drm_plane->dev->primary);
1271 }
1272
1273 static const struct drm_plane_funcs sti_hqvdp_plane_helpers_funcs = {
1274         .update_plane = drm_atomic_helper_update_plane,
1275         .disable_plane = drm_atomic_helper_disable_plane,
1276         .destroy = sti_hqvdp_destroy,
1277         .set_property = drm_atomic_helper_plane_set_property,
1278         .reset = sti_plane_reset,
1279         .atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
1280         .atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
1281         .late_register = sti_hqvdp_late_register,
1282 };
1283
1284 static struct drm_plane *sti_hqvdp_create(struct drm_device *drm_dev,
1285                                           struct device *dev, int desc)
1286 {
1287         struct sti_hqvdp *hqvdp = dev_get_drvdata(dev);
1288         int res;
1289
1290         hqvdp->plane.desc = desc;
1291         hqvdp->plane.status = STI_PLANE_DISABLED;
1292
1293         sti_hqvdp_init(hqvdp);
1294
1295         res = drm_universal_plane_init(drm_dev, &hqvdp->plane.drm_plane, 1,
1296                                        &sti_hqvdp_plane_helpers_funcs,
1297                                        hqvdp_supported_formats,
1298                                        ARRAY_SIZE(hqvdp_supported_formats),
1299                                        DRM_PLANE_TYPE_OVERLAY, NULL);
1300         if (res) {
1301                 DRM_ERROR("Failed to initialize universal plane\n");
1302                 return NULL;
1303         }
1304
1305         drm_plane_helper_add(&hqvdp->plane.drm_plane, &sti_hqvdp_helpers_funcs);
1306
1307         sti_plane_init_property(&hqvdp->plane, DRM_PLANE_TYPE_OVERLAY);
1308
1309         return &hqvdp->plane.drm_plane;
1310 }
1311
1312 static int sti_hqvdp_bind(struct device *dev, struct device *master, void *data)
1313 {
1314         struct sti_hqvdp *hqvdp = dev_get_drvdata(dev);
1315         struct drm_device *drm_dev = data;
1316         struct drm_plane *plane;
1317
1318         DRM_DEBUG_DRIVER("\n");
1319
1320         hqvdp->drm_dev = drm_dev;
1321
1322         /* Create HQVDP plane once xp70 is initialized */
1323         plane = sti_hqvdp_create(drm_dev, hqvdp->dev, STI_HQVDP_0);
1324         if (!plane)
1325                 DRM_ERROR("Can't create HQVDP plane\n");
1326
1327         return 0;
1328 }
1329
1330 static void sti_hqvdp_unbind(struct device *dev,
1331                 struct device *master, void *data)
1332 {
1333         /* do nothing */
1334 }
1335
1336 static const struct component_ops sti_hqvdp_ops = {
1337         .bind = sti_hqvdp_bind,
1338         .unbind = sti_hqvdp_unbind,
1339 };
1340
1341 static int sti_hqvdp_probe(struct platform_device *pdev)
1342 {
1343         struct device *dev = &pdev->dev;
1344         struct device_node *vtg_np;
1345         struct sti_hqvdp *hqvdp;
1346         struct resource *res;
1347
1348         DRM_DEBUG_DRIVER("\n");
1349
1350         hqvdp = devm_kzalloc(dev, sizeof(*hqvdp), GFP_KERNEL);
1351         if (!hqvdp) {
1352                 DRM_ERROR("Failed to allocate HQVDP context\n");
1353                 return -ENOMEM;
1354         }
1355
1356         hqvdp->dev = dev;
1357
1358         /* Get Memory resources */
1359         res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1360         if (res == NULL) {
1361                 DRM_ERROR("Get memory resource failed\n");
1362                 return -ENXIO;
1363         }
1364         hqvdp->regs = devm_ioremap(dev, res->start, resource_size(res));
1365         if (hqvdp->regs == NULL) {
1366                 DRM_ERROR("Register mapping failed\n");
1367                 return -ENXIO;
1368         }
1369
1370         /* Get clock resources */
1371         hqvdp->clk = devm_clk_get(dev, "hqvdp");
1372         hqvdp->clk_pix_main = devm_clk_get(dev, "pix_main");
1373         if (IS_ERR(hqvdp->clk) || IS_ERR(hqvdp->clk_pix_main)) {
1374                 DRM_ERROR("Cannot get clocks\n");
1375                 return -ENXIO;
1376         }
1377
1378         /* Get reset resources */
1379         hqvdp->reset = devm_reset_control_get(dev, "hqvdp");
1380         if (!IS_ERR(hqvdp->reset))
1381                 reset_control_deassert(hqvdp->reset);
1382
1383         vtg_np = of_parse_phandle(pdev->dev.of_node, "st,vtg", 0);
1384         if (vtg_np)
1385                 hqvdp->vtg = of_vtg_find(vtg_np);
1386         of_node_put(vtg_np);
1387
1388         platform_set_drvdata(pdev, hqvdp);
1389
1390         return component_add(&pdev->dev, &sti_hqvdp_ops);
1391 }
1392
1393 static int sti_hqvdp_remove(struct platform_device *pdev)
1394 {
1395         component_del(&pdev->dev, &sti_hqvdp_ops);
1396         return 0;
1397 }
1398
1399 static struct of_device_id hqvdp_of_match[] = {
1400         { .compatible = "st,stih407-hqvdp", },
1401         { /* end node */ }
1402 };
1403 MODULE_DEVICE_TABLE(of, hqvdp_of_match);
1404
1405 struct platform_driver sti_hqvdp_driver = {
1406         .driver = {
1407                 .name = "sti-hqvdp",
1408                 .owner = THIS_MODULE,
1409                 .of_match_table = hqvdp_of_match,
1410         },
1411         .probe = sti_hqvdp_probe,
1412         .remove = sti_hqvdp_remove,
1413 };
1414
1415 MODULE_AUTHOR("Benjamin Gaignard <benjamin.gaignard@st.com>");
1416 MODULE_DESCRIPTION("STMicroelectronics SoC DRM driver");
1417 MODULE_LICENSE("GPL");