drivers/video/imx/mxc_ipuv3_fb.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Porting to u-boot:
   4  *
   5  * (C) Copyright 2010
   6  * Stefano Babic, DENX Software Engineering, sbabic@denx.de
   7  *
   8  * MX51 Linux framebuffer:
   9  *
  10  * (C) Copyright 2004-2010 Freescale Semiconductor, Inc.
  11  */
  12
  13 #include <common.h>
  14 #include <log.h>
  15 #include <part.h>
  16 #include <asm/cache.h>
  17 #include <linux/errno.h>
  18 #include <asm/global_data.h>
  19 #include <linux/string.h>
  20 #include <linux/list.h>
  21 #include <linux/fb.h>
  22 #include <asm/io.h>
  23 #include <asm/mach-imx/video.h>
  24 #include <malloc.h>
  25 #include "../videomodes.h"
  26 #include "ipu.h"
  27 #include "mxcfb.h"
  28 #include "ipu_regs.h"
  29 #include "display.h"
  30 #include <panel.h>
  31
  32 #include <dm.h>
  33 #include <video.h>
  34
  35 DECLARE_GLOBAL_DATA_PTR;
  36
  37 static int mxcfb_map_video_memory(struct fb_info *fbi);
  38 static int mxcfb_unmap_video_memory(struct fb_info *fbi);
  39
  40 static struct fb_videomode const *gmode;
  41 static uint8_t gdisp;
  42 static uint32_t gpixfmt;
  43
  44 static void fb_videomode_to_var(struct fb_var_screeninfo *var,
  45                          const struct fb_videomode *mode)
  46 {
  47         var->xres = mode->xres;
  48         var->yres = mode->yres;
  49         var->xres_virtual = mode->xres;
  50         var->yres_virtual = mode->yres;
  51         var->xoffset = 0;
  52         var->yoffset = 0;
  53         var->pixclock = mode->pixclock;
  54         var->left_margin = mode->left_margin;
  55         var->right_margin = mode->right_margin;
  56         var->upper_margin = mode->upper_margin;
  57         var->lower_margin = mode->lower_margin;
  58         var->hsync_len = mode->hsync_len;
  59         var->vsync_len = mode->vsync_len;
  60         var->sync = mode->sync;
  61         var->vmode = mode->vmode & FB_VMODE_MASK;
  62 }
  63
  64 /*
  65  * Structure containing the MXC specific framebuffer information.
  66  */
  67 struct mxcfb_info {
  68         struct udevice *udev;
  69         int blank;
  70         ipu_channel_t ipu_ch;
  71         int ipu_di;
  72         u32 ipu_di_pix_fmt;
  73         unsigned char overlay;
  74         unsigned char alpha_chan_en;
  75         dma_addr_t alpha_phy_addr0;
  76         dma_addr_t alpha_phy_addr1;
  77         void *alpha_virt_addr0;
  78         void *alpha_virt_addr1;
  79         uint32_t alpha_mem_len;
  80         uint32_t cur_ipu_buf;
  81         uint32_t cur_ipu_alpha_buf;
  82
  83         u32 pseudo_palette[16];
  84 };
  85
  86 enum {
  87         BOTH_ON,
  88         SRC_ON,
  89         TGT_ON,
  90         BOTH_OFF
  91 };
  92
  93 static unsigned long default_bpp = 16;
  94 static unsigned char g_dp_in_use;
  95 static struct fb_info *mxcfb_info[3];
  96 static int ext_clk_used;
  97
  98 static uint32_t bpp_to_pixfmt(struct fb_info *fbi)
  99 {
 100         uint32_t pixfmt = 0;
 101
 102         debug("bpp_to_pixfmt: %d\n", fbi->var.bits_per_pixel);
 103
 104         if (fbi->var.nonstd)
 105                 return fbi->var.nonstd;
 106
 107         switch (fbi->var.bits_per_pixel) {
 108         case 24:
 109                 pixfmt = IPU_PIX_FMT_BGR24;
 110                 break;
 111         case 32:
 112                 pixfmt = IPU_PIX_FMT_BGR32;
 113                 break;
 114         case 16:
 115                 pixfmt = IPU_PIX_FMT_RGB565;
 116                 break;
 117         }
 118         return pixfmt;
 119 }
 120
 121 static int setup_disp_channel1(struct fb_info *fbi)
 122 {
 123         ipu_channel_params_t params;
 124         struct mxcfb_info *mxc_fbi = (struct mxcfb_info *)fbi->par;
 125
 126         memset(&params, 0, sizeof(params));
 127         params.mem_dp_bg_sync.di = mxc_fbi->ipu_di;
 128
 129         debug("%s called\n", __func__);
 130         /*
 131          * Assuming interlaced means yuv output, below setting also
 132          * valid for mem_dc_sync. FG should have the same vmode as BG.
 133          */
 134         if (fbi->var.vmode & FB_VMODE_INTERLACED) {
 135                 params.mem_dp_bg_sync.interlaced = 1;
 136                 params.mem_dp_bg_sync.out_pixel_fmt =
 137                         IPU_PIX_FMT_YUV444;
 138         } else {
 139                 if (mxc_fbi->ipu_di_pix_fmt) {
 140                         params.mem_dp_bg_sync.out_pixel_fmt =
 141                                 mxc_fbi->ipu_di_pix_fmt;
 142                 } else {
 143                         params.mem_dp_bg_sync.out_pixel_fmt =
 144                                 IPU_PIX_FMT_RGB666;
 145                 }
 146         }
 147         params.mem_dp_bg_sync.in_pixel_fmt = bpp_to_pixfmt(fbi);
 148         if (mxc_fbi->alpha_chan_en)
 149                 params.mem_dp_bg_sync.alpha_chan_en = 1;
 150
 151         ipu_init_channel(mxc_fbi->ipu_ch, &params);
 152
 153         return 0;
 154 }
 155
 156 static int setup_disp_channel2(struct fb_info *fbi)
 157 {
 158         int retval = 0;
 159         struct mxcfb_info *mxc_fbi = (struct mxcfb_info *)fbi->par;
 160
 161         mxc_fbi->cur_ipu_buf = 1;
 162         if (mxc_fbi->alpha_chan_en)
 163                 mxc_fbi->cur_ipu_alpha_buf = 1;
 164
 165         fbi->var.xoffset = fbi->var.yoffset = 0;
 166
 167         debug("%s: %x %d %d %d %lx %lx\n",
 168                 __func__,
 169                 mxc_fbi->ipu_ch,
 170                 fbi->var.xres,
 171                 fbi->var.yres,
 172                 fbi->fix.line_length,
 173                 fbi->fix.smem_start,
 174                 fbi->fix.smem_start +
 175                 (fbi->fix.line_length * fbi->var.yres));
 176
 177         retval = ipu_init_channel_buffer(mxc_fbi->ipu_ch, IPU_INPUT_BUFFER,
 178                                          bpp_to_pixfmt(fbi),
 179                                          fbi->var.xres, fbi->var.yres,
 180                                          fbi->fix.line_length,
 181                                          fbi->fix.smem_start +
 182                                          (fbi->fix.line_length * fbi->var.yres),
 183                                          fbi->fix.smem_start,
 184                                          0, 0);
 185         if (retval)
 186                 printf("ipu_init_channel_buffer error %d\n", retval);
 187
 188         return retval;
 189 }
 190
 191 /*
 192  * Set framebuffer parameters and change the operating mode.
 193  *
 194  * @param       info     framebuffer information pointer
 195  */
 196 static int mxcfb_set_par(struct fb_info *fbi)
 197 {
 198         int retval = 0;
 199         u32 mem_len;
 200         ipu_di_signal_cfg_t sig_cfg;
 201         struct mxcfb_info *mxc_fbi = (struct mxcfb_info *)fbi->par;
 202         uint32_t out_pixel_fmt;
 203
 204         ipu_disable_channel(mxc_fbi->ipu_ch);
 205         ipu_uninit_channel(mxc_fbi->ipu_ch);
 206
 207         mem_len = fbi->var.yres_virtual * fbi->fix.line_length;
 208         if (!fbi->fix.smem_start || (mem_len > fbi->fix.smem_len)) {
 209                 if (fbi->fix.smem_start)
 210                         mxcfb_unmap_video_memory(fbi);
 211
 212                 if (mxcfb_map_video_memory(fbi) < 0)
 213                         return -ENOMEM;
 214         }
 215
 216         setup_disp_channel1(fbi);
 217
 218         memset(&sig_cfg, 0, sizeof(sig_cfg));
 219         if (fbi->var.vmode & FB_VMODE_INTERLACED) {
 220                 sig_cfg.interlaced = 1;
 221                 out_pixel_fmt = IPU_PIX_FMT_YUV444;
 222         } else {
 223                 if (mxc_fbi->ipu_di_pix_fmt)
 224                         out_pixel_fmt = mxc_fbi->ipu_di_pix_fmt;
 225                 else
 226                         out_pixel_fmt = IPU_PIX_FMT_RGB666;
 227         }
 228         if (fbi->var.vmode & FB_VMODE_ODD_FLD_FIRST) /* PAL */
 229                 sig_cfg.odd_field_first = 1;
 230         if ((fbi->var.sync & FB_SYNC_EXT) || ext_clk_used)
 231                 sig_cfg.ext_clk = 1;
 232         if (fbi->var.sync & FB_SYNC_HOR_HIGH_ACT)
 233                 sig_cfg.Hsync_pol = 1;
 234         if (fbi->var.sync & FB_SYNC_VERT_HIGH_ACT)
 235                 sig_cfg.Vsync_pol = 1;
 236         if (!(fbi->var.sync & FB_SYNC_CLK_LAT_FALL))
 237                 sig_cfg.clk_pol = 1;
 238         if (fbi->var.sync & FB_SYNC_DATA_INVERT)
 239                 sig_cfg.data_pol = 1;
 240         if (!(fbi->var.sync & FB_SYNC_OE_LOW_ACT))
 241                 sig_cfg.enable_pol = 1;
 242         if (fbi->var.sync & FB_SYNC_CLK_IDLE_EN)
 243                 sig_cfg.clkidle_en = 1;
 244
 245         debug("pixclock = %lu Hz\n", PICOS2KHZ(fbi->var.pixclock) * 1000UL);
 246
 247         if (ipu_init_sync_panel(mxc_fbi->ipu_di,
 248                                 (PICOS2KHZ(fbi->var.pixclock)) * 1000UL,
 249                                 fbi->var.xres, fbi->var.yres,
 250                                 out_pixel_fmt,
 251                                 fbi->var.left_margin,
 252                                 fbi->var.hsync_len,
 253                                 fbi->var.right_margin,
 254                                 fbi->var.upper_margin,
 255                                 fbi->var.vsync_len,
 256                                 fbi->var.lower_margin,
 257                                 0, sig_cfg) != 0) {
 258                 puts("mxcfb: Error initializing panel.\n");
 259                 return -EINVAL;
 260         }
 261
 262         retval = setup_disp_channel2(fbi);
 263         if (retval)
 264                 return retval;
 265
 266         if (mxc_fbi->blank == FB_BLANK_UNBLANK)
 267                 ipu_enable_channel(mxc_fbi->ipu_ch);
 268
 269         return retval;
 270 }
 271
 272 /*
 273  * Check framebuffer variable parameters and adjust to valid values.
 274  *
 275  * @param       var      framebuffer variable parameters
 276  *
 277  * @param       info     framebuffer information pointer
 278  */
 279 static int mxcfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
 280 {
 281         u32 vtotal;
 282         u32 htotal;
 283
 284         if (var->xres_virtual < var->xres)
 285                 var->xres_virtual = var->xres;
 286         if (var->yres_virtual < var->yres)
 287                 var->yres_virtual = var->yres;
 288
 289         if ((var->bits_per_pixel != 32) && (var->bits_per_pixel != 24) &&
 290             (var->bits_per_pixel != 16) && (var->bits_per_pixel != 8))
 291                 var->bits_per_pixel = default_bpp;
 292
 293         switch (var->bits_per_pixel) {
 294         case 8:
 295                 var->red.length = 3;
 296                 var->red.offset = 5;
 297                 var->red.msb_right = 0;
 298
 299                 var->green.length = 3;
 300                 var->green.offset = 2;
 301                 var->green.msb_right = 0;
 302
 303                 var->blue.length = 2;
 304                 var->blue.offset = 0;
 305                 var->blue.msb_right = 0;
 306
 307                 var->transp.length = 0;
 308                 var->transp.offset = 0;
 309                 var->transp.msb_right = 0;
 310                 break;
 311         case 16:
 312                 var->red.length = 5;
 313                 var->red.offset = 11;
 314                 var->red.msb_right = 0;
 315
 316                 var->green.length = 6;
 317                 var->green.offset = 5;
 318                 var->green.msb_right = 0;
 319
 320                 var->blue.length = 5;
 321                 var->blue.offset = 0;
 322                 var->blue.msb_right = 0;
 323
 324                 var->transp.length = 0;
 325                 var->transp.offset = 0;
 326                 var->transp.msb_right = 0;
 327                 break;
 328         case 24:
 329                 var->red.length = 8;
 330                 var->red.offset = 16;
 331                 var->red.msb_right = 0;
 332
 333                 var->green.length = 8;
 334                 var->green.offset = 8;
 335                 var->green.msb_right = 0;
 336
 337                 var->blue.length = 8;
 338                 var->blue.offset = 0;
 339                 var->blue.msb_right = 0;
 340
 341                 var->transp.length = 0;
 342                 var->transp.offset = 0;
 343                 var->transp.msb_right = 0;
 344                 break;
 345         case 32:
 346                 var->red.length = 8;
 347                 var->red.offset = 16;
 348                 var->red.msb_right = 0;
 349
 350                 var->green.length = 8;
 351                 var->green.offset = 8;
 352                 var->green.msb_right = 0;
 353
 354                 var->blue.length = 8;
 355                 var->blue.offset = 0;
 356                 var->blue.msb_right = 0;
 357
 358                 var->transp.length = 8;
 359                 var->transp.offset = 24;
 360                 var->transp.msb_right = 0;
 361                 break;
 362         }
 363
 364         if (var->pixclock < 1000) {
 365                 htotal = var->xres + var->right_margin + var->hsync_len +
 366                     var->left_margin;
 367                 vtotal = var->yres + var->lower_margin + var->vsync_len +
 368                     var->upper_margin;
 369                 var->pixclock = (vtotal * htotal * 6UL) / 100UL;
 370                 var->pixclock = KHZ2PICOS(var->pixclock);
 371                 printf("pixclock set for 60Hz refresh = %u ps\n",
 372                         var->pixclock);
 373         }
 374
 375         var->height = -1;
 376         var->width = -1;
 377         var->grayscale = 0;
 378
 379         return 0;
 380 }
 381
 382 static int mxcfb_map_video_memory(struct fb_info *fbi)
 383 {
 384         struct mxcfb_info *mxc_fbi = (struct mxcfb_info *)fbi->par;
 385         struct video_uc_plat *plat = dev_get_uclass_plat(mxc_fbi->udev);
 386
 387         if (fbi->fix.smem_len < fbi->var.yres_virtual * fbi->fix.line_length) {
 388                 fbi->fix.smem_len = fbi->var.yres_virtual *
 389                                     fbi->fix.line_length;
 390         }
 391         fbi->fix.smem_len = roundup(fbi->fix.smem_len, ARCH_DMA_MINALIGN);
 392
 393         fbi->screen_base = (char *)plat->base;
 394
 395         fbi->fix.smem_start = (unsigned long)fbi->screen_base;
 396         if (fbi->screen_base == 0) {
 397                 puts("Unable to allocate framebuffer memory\n");
 398                 fbi->fix.smem_len = 0;
 399                 fbi->fix.smem_start = 0;
 400                 return -EBUSY;
 401         }
 402
 403         debug("allocated fb @ paddr=0x%08X, size=%d.\n",
 404                 (uint32_t) fbi->fix.smem_start, fbi->fix.smem_len);
 405
 406         fbi->screen_size = fbi->fix.smem_len;
 407         gd->fb_base = fbi->fix.smem_start;
 408
 409         /* Clear the screen */
 410         memset((char *)fbi->screen_base, 0, fbi->fix.smem_len);
 411
 412         return 0;
 413 }
 414
 415 static int mxcfb_unmap_video_memory(struct fb_info *fbi)
 416 {
 417         fbi->screen_base = 0;
 418         fbi->fix.smem_start = 0;
 419         fbi->fix.smem_len = 0;
 420         return 0;
 421 }
 422
 423 /*
 424  * Initializes the framebuffer information pointer. After allocating
 425  * sufficient memory for the framebuffer structure, the fields are
 426  * filled with custom information passed in from the configurable
 427  * structures.  This includes information such as bits per pixel,
 428  * color maps, screen width/height and RGBA offsets.
 429  *
 430  * Return:      Framebuffer structure initialized with our information
 431  */
 432 static struct fb_info *mxcfb_init_fbinfo(void)
 433 {
 434 #define BYTES_PER_LONG 4
 435 #define PADDING (BYTES_PER_LONG - (sizeof(struct fb_info) % BYTES_PER_LONG))
 436         struct fb_info *fbi;
 437         struct mxcfb_info *mxcfbi;
 438         char *p;
 439         int size = sizeof(struct mxcfb_info) + PADDING +
 440                 sizeof(struct fb_info);
 441
 442         debug("%s: %d %d %d %d\n",
 443                 __func__,
 444                 PADDING,
 445                 size,
 446                 sizeof(struct mxcfb_info),
 447                 sizeof(struct fb_info));
 448         /*
 449          * Allocate sufficient memory for the fb structure
 450          */
 451
 452         p = malloc(size);
 453         if (!p)
 454                 return NULL;
 455
 456         memset(p, 0, size);
 457
 458         fbi = (struct fb_info *)p;
 459         fbi->par = p + sizeof(struct fb_info) + PADDING;
 460
 461         mxcfbi = (struct mxcfb_info *)fbi->par;
 462         debug("Framebuffer structures at: fbi=0x%x mxcfbi=0x%x\n",
 463                 (unsigned int)fbi, (unsigned int)mxcfbi);
 464
 465         fbi->var.activate = FB_ACTIVATE_NOW;
 466
 467         fbi->flags = FBINFO_FLAG_DEFAULT;
 468         fbi->pseudo_palette = mxcfbi->pseudo_palette;
 469
 470         return fbi;
 471 }
 472
 473 extern struct clk *g_ipu_clk;
 474
 475 /*
 476  * Probe routine for the framebuffer driver. It is called during the
 477  * driver binding process. The following functions are performed in
 478  * this routine: Framebuffer initialization, Memory allocation and
 479  * mapping, Framebuffer registration, IPU initialization.
 480  *
 481  * Return:      Appropriate error code to the kernel common code
 482  */
 483 static int mxcfb_probe(struct udevice *dev, u32 interface_pix_fmt,
 484                        uint8_t disp, struct fb_videomode const *mode)
 485 {
 486         struct fb_info *fbi;
 487         struct mxcfb_info *mxcfbi;
 488
 489         /*
 490          * Initialize FB structures
 491          */
 492         fbi = mxcfb_init_fbinfo();
 493         if (!fbi)
 494                 return -ENOMEM;
 495
 496         mxcfbi = (struct mxcfb_info *)fbi->par;
 497
 498         if (!g_dp_in_use) {
 499                 mxcfbi->ipu_ch = MEM_BG_SYNC;
 500                 mxcfbi->blank = FB_BLANK_UNBLANK;
 501         } else {
 502                 mxcfbi->ipu_ch = MEM_DC_SYNC;
 503                 mxcfbi->blank = FB_BLANK_POWERDOWN;
 504         }
 505
 506         mxcfbi->ipu_di = disp;
 507         mxcfbi->udev = dev;
 508
 509         if (!ipu_clk_enabled())
 510                 clk_enable(g_ipu_clk);
 511
 512         ipu_disp_set_global_alpha(mxcfbi->ipu_ch, 1, 0x80);
 513         ipu_disp_set_color_key(mxcfbi->ipu_ch, 0, 0);
 514
 515         g_dp_in_use = 1;
 516
 517         mxcfb_info[mxcfbi->ipu_di] = fbi;
 518
 519         /* Need dummy values until real panel is configured */
 520
 521         mxcfbi->ipu_di_pix_fmt = interface_pix_fmt;
 522         fb_videomode_to_var(&fbi->var, mode);
 523         fbi->var.bits_per_pixel = 16;
 524         fbi->fix.line_length = fbi->var.xres_virtual *
 525                                (fbi->var.bits_per_pixel / 8);
 526         fbi->fix.smem_len = fbi->var.yres_virtual * fbi->fix.line_length;
 527
 528         mxcfb_check_var(&fbi->var, fbi);
 529
 530         /* Default Y virtual size is 2x panel size */
 531         fbi->var.yres_virtual = fbi->var.yres * 2;
 532
 533         /* allocate fb first */
 534         if (mxcfb_map_video_memory(fbi) < 0)
 535                 return -ENOMEM;
 536
 537         mxcfb_set_par(fbi);
 538
 539 #ifdef DEBUG
 540         ipu_dump_registers();
 541 #endif
 542
 543         return 0;
 544 }
 545
 546 void ipuv3_fb_shutdown(void)
 547 {
 548         int i;
 549         struct ipu_stat *stat = (struct ipu_stat *)IPU_STAT;
 550
 551         if (!ipu_clk_enabled())
 552                 return;
 553
 554         for (i = 0; i < ARRAY_SIZE(mxcfb_info); i++) {
 555                 struct fb_info *fbi = mxcfb_info[i];
 556                 if (fbi) {
 557                         struct mxcfb_info *mxc_fbi = fbi->par;
 558                         ipu_disable_channel(mxc_fbi->ipu_ch);
 559                         ipu_uninit_channel(mxc_fbi->ipu_ch);
 560                 }
 561         }
 562         for (i = 0; i < ARRAY_SIZE(stat->int_stat); i++) {
 563                 __raw_writel(__raw_readl(&stat->int_stat[i]),
 564                              &stat->int_stat[i]);
 565         }
 566 }
 567
 568 int ipuv3_fb_init(struct fb_videomode const *mode,
 569                   uint8_t disp,
 570                   uint32_t pixfmt)
 571 {
 572         gmode = mode;
 573         gdisp = disp;
 574         gpixfmt = pixfmt;
 575
 576         return 0;
 577 }
 578
 579 enum {
 580         /* Maximum display size we support */
 581         LCD_MAX_WIDTH           = 1920,
 582         LCD_MAX_HEIGHT          = 1080,
 583         LCD_MAX_LOG2_BPP        = VIDEO_BPP16,
 584 };
 585
 586 static int ipuv3_video_probe(struct udevice *dev)
 587 {
 588         struct video_uc_plat *plat = dev_get_uclass_plat(dev);
 589         struct video_priv *uc_priv = dev_get_uclass_priv(dev);
 590 #if defined(CONFIG_DISPLAY)
 591         struct udevice *disp_dev;
 592 #endif
 593         u32 fb_start, fb_end;
 594         int ret;
 595
 596         debug("%s() plat: base 0x%lx, size 0x%x\n",
 597               __func__, plat->base, plat->size);
 598
 599         ret = ipu_probe();
 600         if (ret)
 601                 return ret;
 602
 603         ret = ipu_displays_init();
 604         if (ret < 0)
 605                 return ret;
 606
 607         ret = mxcfb_probe(dev, gpixfmt, gdisp, gmode);
 608         if (ret < 0)
 609                 return ret;
 610
 611 #if defined(CONFIG_DISPLAY)
 612         ret = uclass_first_device_err(UCLASS_DISPLAY, &disp_dev);
 613         if (!ret)
 614                 ret = display_enable(disp_dev, 16, NULL);
 615         if (ret < 0)
 616                 return ret;
 617 #endif
 618         if (IS_ENABLED(CONFIG_PANEL)) {
 619                 struct udevice *panel_dev;
 620
 621                 ret = uclass_get_device(UCLASS_PANEL, 0, &panel_dev);
 622                 if (panel_dev)
 623                         panel_enable_backlight(panel_dev);
 624         }
 625
 626         uc_priv->xsize = gmode->xres;
 627         uc_priv->ysize = gmode->yres;
 628         uc_priv->bpix = LCD_MAX_LOG2_BPP;
 629
 630         /* Enable dcache for the frame buffer */
 631         fb_start = plat->base & ~(MMU_SECTION_SIZE - 1);
 632         fb_end = plat->base + plat->size;
 633         fb_end = ALIGN(fb_end, 1 << MMU_SECTION_SHIFT);
 634         mmu_set_region_dcache_behaviour(fb_start, fb_end - fb_start,
 635                                         DCACHE_WRITEBACK);
 636         video_set_flush_dcache(dev, true);
 637         gd->fb_base = fb_start;
 638
 639         return 0;
 640 }
 641
 642 struct ipuv3_video_priv {
 643         ulong regs;
 644 };
 645
 646 static int ipuv3_video_bind(struct udevice *dev)
 647 {
 648         struct video_uc_plat *plat = dev_get_uclass_plat(dev);
 649
 650         plat->size = LCD_MAX_WIDTH * LCD_MAX_HEIGHT *
 651                      (1 << VIDEO_BPP32) / 8;
 652
 653         return 0;
 654 }
 655
 656 static const struct udevice_id ipuv3_video_ids[] = {
 657 #ifdef CONFIG_ARCH_MX6
 658         { .compatible = "fsl,imx6q-ipu" },
 659 #endif
 660 #ifdef CONFIG_ARCH_MX5
 661         { .compatible = "fsl,imx53-ipu" },
 662 #endif
 663         { }
 664 };
 665
 666 U_BOOT_DRIVER(fsl_imx6q_ipu) = {
 667         .name   = "fsl_imx6q_ipu",
 668         .id     = UCLASS_VIDEO,
 669         .of_match = ipuv3_video_ids,
 670         .bind   = ipuv3_video_bind,
 671         .probe  = ipuv3_video_probe,
 672         .priv_auto      = sizeof(struct ipuv3_video_priv),
 673         .flags  = DM_FLAG_PRE_RELOC,
 674 };