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 <video_fb.h>
  26 #include "../videomodes.h"
  27 #include "ipu.h"
  28 #include "mxcfb.h"
  29 #include "ipu_regs.h"
  30 #include "display.h"
  31 #include <panel.h>
  32
  33 #include <dm.h>
  34 #include <video.h>
  35
  36 DECLARE_GLOBAL_DATA_PTR;
  37
  38 static int mxcfb_map_video_memory(struct fb_info *fbi);
  39 static int mxcfb_unmap_video_memory(struct fb_info *fbi);
  40
  41 static struct fb_videomode const *gmode;
  42 static uint8_t gdisp;
  43 static uint32_t gpixfmt;
  44
  45 static void fb_videomode_to_var(struct fb_var_screeninfo *var,
  46                          const struct fb_videomode *mode)
  47 {
  48         var->xres = mode->xres;
  49         var->yres = mode->yres;
  50         var->xres_virtual = mode->xres;
  51         var->yres_virtual = mode->yres;
  52         var->xoffset = 0;
  53         var->yoffset = 0;
  54         var->pixclock = mode->pixclock;
  55         var->left_margin = mode->left_margin;
  56         var->right_margin = mode->right_margin;
  57         var->upper_margin = mode->upper_margin;
  58         var->lower_margin = mode->lower_margin;
  59         var->hsync_len = mode->hsync_len;
  60         var->vsync_len = mode->vsync_len;
  61         var->sync = mode->sync;
  62         var->vmode = mode->vmode & FB_VMODE_MASK;
  63 }
  64
  65 /*
  66  * Structure containing the MXC specific framebuffer information.
  67  */
  68 struct mxcfb_info {
  69         struct udevice *udev;
  70         int blank;
  71         ipu_channel_t ipu_ch;
  72         int ipu_di;
  73         u32 ipu_di_pix_fmt;
  74         unsigned char overlay;
  75         unsigned char alpha_chan_en;
  76         dma_addr_t alpha_phy_addr0;
  77         dma_addr_t alpha_phy_addr1;
  78         void *alpha_virt_addr0;
  79         void *alpha_virt_addr1;
  80         uint32_t alpha_mem_len;
  81         uint32_t cur_ipu_buf;
  82         uint32_t cur_ipu_alpha_buf;
  83
  84         u32 pseudo_palette[16];
  85 };
  86
  87 enum {
  88         BOTH_ON,
  89         SRC_ON,
  90         TGT_ON,
  91         BOTH_OFF
  92 };
  93
  94 static unsigned long default_bpp = 16;
  95 static unsigned char g_dp_in_use;
  96 static struct fb_info *mxcfb_info[3];
  97 static int ext_clk_used;
  98
  99 static uint32_t bpp_to_pixfmt(struct fb_info *fbi)
 100 {
 101         uint32_t pixfmt = 0;
 102
 103         debug("bpp_to_pixfmt: %d\n", fbi->var.bits_per_pixel);
 104
 105         if (fbi->var.nonstd)
 106                 return fbi->var.nonstd;
 107
 108         switch (fbi->var.bits_per_pixel) {
 109         case 24:
 110                 pixfmt = IPU_PIX_FMT_BGR24;
 111                 break;
 112         case 32:
 113                 pixfmt = IPU_PIX_FMT_BGR32;
 114                 break;
 115         case 16:
 116                 pixfmt = IPU_PIX_FMT_RGB565;
 117                 break;
 118         }
 119         return pixfmt;
 120 }
 121
 122 static int setup_disp_channel1(struct fb_info *fbi)
 123 {
 124         ipu_channel_params_t params;
 125         struct mxcfb_info *mxc_fbi = (struct mxcfb_info *)fbi->par;
 126
 127         memset(&params, 0, sizeof(params));
 128         params.mem_dp_bg_sync.di = mxc_fbi->ipu_di;
 129
 130         debug("%s called\n", __func__);
 131         /*
 132          * Assuming interlaced means yuv output, below setting also
 133          * valid for mem_dc_sync. FG should have the same vmode as BG.
 134          */
 135         if (fbi->var.vmode & FB_VMODE_INTERLACED) {
 136                 params.mem_dp_bg_sync.interlaced = 1;
 137                 params.mem_dp_bg_sync.out_pixel_fmt =
 138                         IPU_PIX_FMT_YUV444;
 139         } else {
 140                 if (mxc_fbi->ipu_di_pix_fmt) {
 141                         params.mem_dp_bg_sync.out_pixel_fmt =
 142                                 mxc_fbi->ipu_di_pix_fmt;
 143                 } else {
 144                         params.mem_dp_bg_sync.out_pixel_fmt =
 145                                 IPU_PIX_FMT_RGB666;
 146                 }
 147         }
 148         params.mem_dp_bg_sync.in_pixel_fmt = bpp_to_pixfmt(fbi);
 149         if (mxc_fbi->alpha_chan_en)
 150                 params.mem_dp_bg_sync.alpha_chan_en = 1;
 151
 152         ipu_init_channel(mxc_fbi->ipu_ch, &params);
 153
 154         return 0;
 155 }
 156
 157 static int setup_disp_channel2(struct fb_info *fbi)
 158 {
 159         int retval = 0;
 160         struct mxcfb_info *mxc_fbi = (struct mxcfb_info *)fbi->par;
 161
 162         mxc_fbi->cur_ipu_buf = 1;
 163         if (mxc_fbi->alpha_chan_en)
 164                 mxc_fbi->cur_ipu_alpha_buf = 1;
 165
 166         fbi->var.xoffset = fbi->var.yoffset = 0;
 167
 168         debug("%s: %x %d %d %d %lx %lx\n",
 169                 __func__,
 170                 mxc_fbi->ipu_ch,
 171                 fbi->var.xres,
 172                 fbi->var.yres,
 173                 fbi->fix.line_length,
 174                 fbi->fix.smem_start,
 175                 fbi->fix.smem_start +
 176                 (fbi->fix.line_length * fbi->var.yres));
 177
 178         retval = ipu_init_channel_buffer(mxc_fbi->ipu_ch, IPU_INPUT_BUFFER,
 179                                          bpp_to_pixfmt(fbi),
 180                                          fbi->var.xres, fbi->var.yres,
 181                                          fbi->fix.line_length,
 182                                          fbi->fix.smem_start +
 183                                          (fbi->fix.line_length * fbi->var.yres),
 184                                          fbi->fix.smem_start,
 185                                          0, 0);
 186         if (retval)
 187                 printf("ipu_init_channel_buffer error %d\n", retval);
 188
 189         return retval;
 190 }
 191
 192 /*
 193  * Set framebuffer parameters and change the operating mode.
 194  *
 195  * @param       info     framebuffer information pointer
 196  */
 197 static int mxcfb_set_par(struct fb_info *fbi)
 198 {
 199         int retval = 0;
 200         u32 mem_len;
 201         ipu_di_signal_cfg_t sig_cfg;
 202         struct mxcfb_info *mxc_fbi = (struct mxcfb_info *)fbi->par;
 203         uint32_t out_pixel_fmt;
 204
 205         ipu_disable_channel(mxc_fbi->ipu_ch);
 206         ipu_uninit_channel(mxc_fbi->ipu_ch);
 207
 208         mem_len = fbi->var.yres_virtual * fbi->fix.line_length;
 209         if (!fbi->fix.smem_start || (mem_len > fbi->fix.smem_len)) {
 210                 if (fbi->fix.smem_start)
 211                         mxcfb_unmap_video_memory(fbi);
 212
 213                 if (mxcfb_map_video_memory(fbi) < 0)
 214                         return -ENOMEM;
 215         }
 216
 217         setup_disp_channel1(fbi);
 218
 219         memset(&sig_cfg, 0, sizeof(sig_cfg));
 220         if (fbi->var.vmode & FB_VMODE_INTERLACED) {
 221                 sig_cfg.interlaced = 1;
 222                 out_pixel_fmt = IPU_PIX_FMT_YUV444;
 223         } else {
 224                 if (mxc_fbi->ipu_di_pix_fmt)
 225                         out_pixel_fmt = mxc_fbi->ipu_di_pix_fmt;
 226                 else
 227                         out_pixel_fmt = IPU_PIX_FMT_RGB666;
 228         }
 229         if (fbi->var.vmode & FB_VMODE_ODD_FLD_FIRST) /* PAL */
 230                 sig_cfg.odd_field_first = 1;
 231         if ((fbi->var.sync & FB_SYNC_EXT) || ext_clk_used)
 232                 sig_cfg.ext_clk = 1;
 233         if (fbi->var.sync & FB_SYNC_HOR_HIGH_ACT)
 234                 sig_cfg.Hsync_pol = 1;
 235         if (fbi->var.sync & FB_SYNC_VERT_HIGH_ACT)
 236                 sig_cfg.Vsync_pol = 1;
 237         if (!(fbi->var.sync & FB_SYNC_CLK_LAT_FALL))
 238                 sig_cfg.clk_pol = 1;
 239         if (fbi->var.sync & FB_SYNC_DATA_INVERT)
 240                 sig_cfg.data_pol = 1;
 241         if (!(fbi->var.sync & FB_SYNC_OE_LOW_ACT))
 242                 sig_cfg.enable_pol = 1;
 243         if (fbi->var.sync & FB_SYNC_CLK_IDLE_EN)
 244                 sig_cfg.clkidle_en = 1;
 245
 246         debug("pixclock = %lu Hz\n", PICOS2KHZ(fbi->var.pixclock) * 1000UL);
 247
 248         if (ipu_init_sync_panel(mxc_fbi->ipu_di,
 249                                 (PICOS2KHZ(fbi->var.pixclock)) * 1000UL,
 250                                 fbi->var.xres, fbi->var.yres,
 251                                 out_pixel_fmt,
 252                                 fbi->var.left_margin,
 253                                 fbi->var.hsync_len,
 254                                 fbi->var.right_margin,
 255                                 fbi->var.upper_margin,
 256                                 fbi->var.vsync_len,
 257                                 fbi->var.lower_margin,
 258                                 0, sig_cfg) != 0) {
 259                 puts("mxcfb: Error initializing panel.\n");
 260                 return -EINVAL;
 261         }
 262
 263         retval = setup_disp_channel2(fbi);
 264         if (retval)
 265                 return retval;
 266
 267         if (mxc_fbi->blank == FB_BLANK_UNBLANK)
 268                 ipu_enable_channel(mxc_fbi->ipu_ch);
 269
 270         return retval;
 271 }
 272
 273 /*
 274  * Check framebuffer variable parameters and adjust to valid values.
 275  *
 276  * @param       var      framebuffer variable parameters
 277  *
 278  * @param       info     framebuffer information pointer
 279  */
 280 static int mxcfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
 281 {
 282         u32 vtotal;
 283         u32 htotal;
 284
 285         if (var->xres_virtual < var->xres)
 286                 var->xres_virtual = var->xres;
 287         if (var->yres_virtual < var->yres)
 288                 var->yres_virtual = var->yres;
 289
 290         if ((var->bits_per_pixel != 32) && (var->bits_per_pixel != 24) &&
 291             (var->bits_per_pixel != 16) && (var->bits_per_pixel != 8))
 292                 var->bits_per_pixel = default_bpp;
 293
 294         switch (var->bits_per_pixel) {
 295         case 8:
 296                 var->red.length = 3;
 297                 var->red.offset = 5;
 298                 var->red.msb_right = 0;
 299
 300                 var->green.length = 3;
 301                 var->green.offset = 2;
 302                 var->green.msb_right = 0;
 303
 304                 var->blue.length = 2;
 305                 var->blue.offset = 0;
 306                 var->blue.msb_right = 0;
 307
 308                 var->transp.length = 0;
 309                 var->transp.offset = 0;
 310                 var->transp.msb_right = 0;
 311                 break;
 312         case 16:
 313                 var->red.length = 5;
 314                 var->red.offset = 11;
 315                 var->red.msb_right = 0;
 316
 317                 var->green.length = 6;
 318                 var->green.offset = 5;
 319                 var->green.msb_right = 0;
 320
 321                 var->blue.length = 5;
 322                 var->blue.offset = 0;
 323                 var->blue.msb_right = 0;
 324
 325                 var->transp.length = 0;
 326                 var->transp.offset = 0;
 327                 var->transp.msb_right = 0;
 328                 break;
 329         case 24:
 330                 var->red.length = 8;
 331                 var->red.offset = 16;
 332                 var->red.msb_right = 0;
 333
 334                 var->green.length = 8;
 335                 var->green.offset = 8;
 336                 var->green.msb_right = 0;
 337
 338                 var->blue.length = 8;
 339                 var->blue.offset = 0;
 340                 var->blue.msb_right = 0;
 341
 342                 var->transp.length = 0;
 343                 var->transp.offset = 0;
 344                 var->transp.msb_right = 0;
 345                 break;
 346         case 32:
 347                 var->red.length = 8;
 348                 var->red.offset = 16;
 349                 var->red.msb_right = 0;
 350
 351                 var->green.length = 8;
 352                 var->green.offset = 8;
 353                 var->green.msb_right = 0;
 354
 355                 var->blue.length = 8;
 356                 var->blue.offset = 0;
 357                 var->blue.msb_right = 0;
 358
 359                 var->transp.length = 8;
 360                 var->transp.offset = 24;
 361                 var->transp.msb_right = 0;
 362                 break;
 363         }
 364
 365         if (var->pixclock < 1000) {
 366                 htotal = var->xres + var->right_margin + var->hsync_len +
 367                     var->left_margin;
 368                 vtotal = var->yres + var->lower_margin + var->vsync_len +
 369                     var->upper_margin;
 370                 var->pixclock = (vtotal * htotal * 6UL) / 100UL;
 371                 var->pixclock = KHZ2PICOS(var->pixclock);
 372                 printf("pixclock set for 60Hz refresh = %u ps\n",
 373                         var->pixclock);
 374         }
 375
 376         var->height = -1;
 377         var->width = -1;
 378         var->grayscale = 0;
 379
 380         return 0;
 381 }
 382
 383 static int mxcfb_map_video_memory(struct fb_info *fbi)
 384 {
 385         struct mxcfb_info *mxc_fbi = (struct mxcfb_info *)fbi->par;
 386         struct video_uc_platdata *plat = dev_get_uclass_platdata(mxc_fbi->udev);
 387
 388         if (fbi->fix.smem_len < fbi->var.yres_virtual * fbi->fix.line_length) {
 389                 fbi->fix.smem_len = fbi->var.yres_virtual *
 390                                     fbi->fix.line_length;
 391         }
 392         fbi->fix.smem_len = roundup(fbi->fix.smem_len, ARCH_DMA_MINALIGN);
 393
 394         fbi->screen_base = (char *)plat->base;
 395
 396         fbi->fix.smem_start = (unsigned long)fbi->screen_base;
 397         if (fbi->screen_base == 0) {
 398                 puts("Unable to allocate framebuffer memory\n");
 399                 fbi->fix.smem_len = 0;
 400                 fbi->fix.smem_start = 0;
 401                 return -EBUSY;
 402         }
 403
 404         debug("allocated fb @ paddr=0x%08X, size=%d.\n",
 405                 (uint32_t) fbi->fix.smem_start, fbi->fix.smem_len);
 406
 407         fbi->screen_size = fbi->fix.smem_len;
 408         gd->fb_base = fbi->fix.smem_start;
 409
 410         /* Clear the screen */
 411         memset((char *)fbi->screen_base, 0, fbi->fix.smem_len);
 412
 413         return 0;
 414 }
 415
 416 static int mxcfb_unmap_video_memory(struct fb_info *fbi)
 417 {
 418         fbi->screen_base = 0;
 419         fbi->fix.smem_start = 0;
 420         fbi->fix.smem_len = 0;
 421         return 0;
 422 }
 423
 424 /*
 425  * Initializes the framebuffer information pointer. After allocating
 426  * sufficient memory for the framebuffer structure, the fields are
 427  * filled with custom information passed in from the configurable
 428  * structures.  This includes information such as bits per pixel,
 429  * color maps, screen width/height and RGBA offsets.
 430  *
 431  * @return      Framebuffer structure initialized with our information
 432  */
 433 static struct fb_info *mxcfb_init_fbinfo(void)
 434 {
 435 #define BYTES_PER_LONG 4
 436 #define PADDING (BYTES_PER_LONG - (sizeof(struct fb_info) % BYTES_PER_LONG))
 437         struct fb_info *fbi;
 438         struct mxcfb_info *mxcfbi;
 439         char *p;
 440         int size = sizeof(struct mxcfb_info) + PADDING +
 441                 sizeof(struct fb_info);
 442
 443         debug("%s: %d %d %d %d\n",
 444                 __func__,
 445                 PADDING,
 446                 size,
 447                 sizeof(struct mxcfb_info),
 448                 sizeof(struct fb_info));
 449         /*
 450          * Allocate sufficient memory for the fb structure
 451          */
 452
 453         p = malloc(size);
 454         if (!p)
 455                 return NULL;
 456
 457         memset(p, 0, size);
 458
 459         fbi = (struct fb_info *)p;
 460         fbi->par = p + sizeof(struct fb_info) + PADDING;
 461
 462         mxcfbi = (struct mxcfb_info *)fbi->par;
 463         debug("Framebuffer structures at: fbi=0x%x mxcfbi=0x%x\n",
 464                 (unsigned int)fbi, (unsigned int)mxcfbi);
 465
 466         fbi->var.activate = FB_ACTIVATE_NOW;
 467
 468         fbi->flags = FBINFO_FLAG_DEFAULT;
 469         fbi->pseudo_palette = mxcfbi->pseudo_palette;
 470
 471         return fbi;
 472 }
 473
 474 extern struct clk *g_ipu_clk;
 475
 476 /*
 477  * Probe routine for the framebuffer driver. It is called during the
 478  * driver binding process. The following functions are performed in
 479  * this routine: Framebuffer initialization, Memory allocation and
 480  * mapping, Framebuffer registration, IPU initialization.
 481  *
 482  * @return      Appropriate error code to the kernel common code
 483  */
 484 static int mxcfb_probe(struct udevice *dev, u32 interface_pix_fmt,
 485                        uint8_t disp, struct fb_videomode const *mode)
 486 {
 487         struct fb_info *fbi;
 488         struct mxcfb_info *mxcfbi;
 489
 490         /*
 491          * Initialize FB structures
 492          */
 493         fbi = mxcfb_init_fbinfo();
 494         if (!fbi)
 495                 return -ENOMEM;
 496
 497         mxcfbi = (struct mxcfb_info *)fbi->par;
 498
 499         if (!g_dp_in_use) {
 500                 mxcfbi->ipu_ch = MEM_BG_SYNC;
 501                 mxcfbi->blank = FB_BLANK_UNBLANK;
 502         } else {
 503                 mxcfbi->ipu_ch = MEM_DC_SYNC;
 504                 mxcfbi->blank = FB_BLANK_POWERDOWN;
 505         }
 506
 507         mxcfbi->ipu_di = disp;
 508         mxcfbi->udev = dev;
 509
 510         if (!ipu_clk_enabled())
 511                 clk_enable(g_ipu_clk);
 512
 513         ipu_disp_set_global_alpha(mxcfbi->ipu_ch, 1, 0x80);
 514         ipu_disp_set_color_key(mxcfbi->ipu_ch, 0, 0);
 515
 516         g_dp_in_use = 1;
 517
 518         mxcfb_info[mxcfbi->ipu_di] = fbi;
 519
 520         /* Need dummy values until real panel is configured */
 521
 522         mxcfbi->ipu_di_pix_fmt = interface_pix_fmt;
 523         fb_videomode_to_var(&fbi->var, mode);
 524         fbi->var.bits_per_pixel = 16;
 525         fbi->fix.line_length = fbi->var.xres_virtual *
 526                                (fbi->var.bits_per_pixel / 8);
 527         fbi->fix.smem_len = fbi->var.yres_virtual * fbi->fix.line_length;
 528
 529         mxcfb_check_var(&fbi->var, fbi);
 530
 531         /* Default Y virtual size is 2x panel size */
 532         fbi->var.yres_virtual = fbi->var.yres * 2;
 533
 534         /* allocate fb first */
 535         if (mxcfb_map_video_memory(fbi) < 0)
 536                 return -ENOMEM;
 537
 538         mxcfb_set_par(fbi);
 539
 540 #ifdef DEBUG
 541         ipu_dump_registers();
 542 #endif
 543
 544         return 0;
 545 }
 546
 547 void ipuv3_fb_shutdown(void)
 548 {
 549         int i;
 550         struct ipu_stat *stat = (struct ipu_stat *)IPU_STAT;
 551
 552         if (!ipu_clk_enabled())
 553                 return;
 554
 555         for (i = 0; i < ARRAY_SIZE(mxcfb_info); i++) {
 556                 struct fb_info *fbi = mxcfb_info[i];
 557                 if (fbi) {
 558                         struct mxcfb_info *mxc_fbi = fbi->par;
 559                         ipu_disable_channel(mxc_fbi->ipu_ch);
 560                         ipu_uninit_channel(mxc_fbi->ipu_ch);
 561                 }
 562         }
 563         for (i = 0; i < ARRAY_SIZE(stat->int_stat); i++) {
 564                 __raw_writel(__raw_readl(&stat->int_stat[i]),
 565                              &stat->int_stat[i]);
 566         }
 567 }
 568
 569 int ipuv3_fb_init(struct fb_videomode const *mode,
 570                   uint8_t disp,
 571                   uint32_t pixfmt)
 572 {
 573         gmode = mode;
 574         gdisp = disp;
 575         gpixfmt = pixfmt;
 576
 577         return 0;
 578 }
 579
 580 enum {
 581         /* Maximum display size we support */
 582         LCD_MAX_WIDTH           = 1920,
 583         LCD_MAX_HEIGHT          = 1080,
 584         LCD_MAX_LOG2_BPP        = VIDEO_BPP16,
 585 };
 586
 587 static int ipuv3_video_probe(struct udevice *dev)
 588 {
 589         struct video_uc_platdata *plat = dev_get_uclass_platdata(dev);
 590         struct video_priv *uc_priv = dev_get_uclass_priv(dev);
 591 #if defined(CONFIG_DISPLAY)
 592         struct udevice *disp_dev;
 593 #endif
 594         u32 fb_start, fb_end;
 595         int ret;
 596
 597         debug("%s() plat: base 0x%lx, size 0x%x\n",
 598               __func__, plat->base, plat->size);
 599
 600         ret = ipu_probe();
 601         if (ret)
 602                 return ret;
 603
 604         ret = ipu_displays_init();
 605         if (ret < 0)
 606                 return ret;
 607
 608         ret = mxcfb_probe(dev, gpixfmt, gdisp, gmode);
 609         if (ret < 0)
 610                 return ret;
 611
 612 #if defined(CONFIG_DISPLAY)
 613         ret = uclass_first_device(UCLASS_DISPLAY, &disp_dev);
 614         if (disp_dev) {
 615                 ret = display_enable(disp_dev, 16, NULL);
 616                 if (ret < 0)
 617                         return ret;
 618         }
 619 #endif
 620         if (CONFIG_IS_ENABLED(PANEL)) {
 621                 struct udevice *panel_dev;
 622
 623                 ret = uclass_get_device(UCLASS_PANEL, 0, &panel_dev);
 624                 if (panel_dev)
 625                         panel_enable_backlight(panel_dev);
 626         }
 627
 628         uc_priv->xsize = gmode->xres;
 629         uc_priv->ysize = gmode->yres;
 630         uc_priv->bpix = LCD_MAX_LOG2_BPP;
 631
 632         /* Enable dcache for the frame buffer */
 633         fb_start = plat->base & ~(MMU_SECTION_SIZE - 1);
 634         fb_end = plat->base + plat->size;
 635         fb_end = ALIGN(fb_end, 1 << MMU_SECTION_SHIFT);
 636         mmu_set_region_dcache_behaviour(fb_start, fb_end - fb_start,
 637                                         DCACHE_WRITEBACK);
 638         video_set_flush_dcache(dev, true);
 639         gd->fb_base = fb_start;
 640
 641         return 0;
 642 }
 643
 644 struct ipuv3_video_priv {
 645         ulong regs;
 646 };
 647
 648 static int ipuv3_video_bind(struct udevice *dev)
 649 {
 650         struct video_uc_platdata *plat = dev_get_uclass_platdata(dev);
 651
 652         plat->size = LCD_MAX_WIDTH * LCD_MAX_HEIGHT *
 653                      (1 << VIDEO_BPP32) / 8;
 654
 655         return 0;
 656 }
 657
 658 static const struct udevice_id ipuv3_video_ids[] = {
 659 #ifdef CONFIG_ARCH_MX6
 660         { .compatible = "fsl,imx6q-ipu" },
 661 #endif
 662 #ifdef CONFIG_ARCH_MX5
 663         { .compatible = "fsl,imx53-ipu" },
 664 #endif
 665         { }
 666 };
 667
 668 U_BOOT_DRIVER(fsl_imx6q_ipu) = {
 669         .name   = "fsl_imx6q_ipu",
 670         .id     = UCLASS_VIDEO,
 671         .of_match = ipuv3_video_ids,
 672         .bind   = ipuv3_video_bind,
 673         .probe  = ipuv3_video_probe,
 674         .priv_auto_alloc_size = sizeof(struct ipuv3_video_priv),
 675         .flags  = DM_FLAG_PRE_RELOC,
 676 };