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, [email protected]
   7  *
   8  * MX51 Linux framebuffer:
   9  *
  10  * (C) Copyright 2004-2010 Freescale Semiconductor, Inc.
  11  */
  12
  13 #include <common.h>
  14 #include <linux/errno.h>
  15 #include <asm/global_data.h>
  16 #include <linux/string.h>
  17 #include <linux/list.h>
  18 #include <linux/fb.h>
  19 #include <asm/io.h>
  20 #include <asm/mach-imx/video.h>
  21 #include <malloc.h>
  22 #include <video_fb.h>
  23 #include "../videomodes.h"
  24 #include "ipu.h"
  25 #include "mxcfb.h"
  26 #include "ipu_regs.h"
  27 #include "display.h"
  28
  29 #include <dm.h>
  30 #include <video.h>
  31
  32 DECLARE_GLOBAL_DATA_PTR;
  33
  34 static int mxcfb_map_video_memory(struct fb_info *fbi);
  35 static int mxcfb_unmap_video_memory(struct fb_info *fbi);
  36
  37 /* graphics setup */
  38 static GraphicDevice panel;
  39 static struct fb_videomode const *gmode;
  40 static uint8_t gdisp;
  41 static uint32_t gpixfmt;
  42
  43 static void fb_videomode_to_var(struct fb_var_screeninfo *var,
  44                          const struct fb_videomode *mode)
  45 {
  46         var->xres = mode->xres;
  47         var->yres = mode->yres;
  48         var->xres_virtual = mode->xres;
  49         var->yres_virtual = mode->yres;
  50         var->xoffset = 0;
  51         var->yoffset = 0;
  52         var->pixclock = mode->pixclock;
  53         var->left_margin = mode->left_margin;
  54         var->right_margin = mode->right_margin;
  55         var->upper_margin = mode->upper_margin;
  56         var->lower_margin = mode->lower_margin;
  57         var->hsync_len = mode->hsync_len;
  58         var->vsync_len = mode->vsync_len;
  59         var->sync = mode->sync;
  60         var->vmode = mode->vmode & FB_VMODE_MASK;
  61 }
  62
  63 /*
  64  * Structure containing the MXC specific framebuffer information.
  65  */
  66 struct mxcfb_info {
  67         int blank;
  68         ipu_channel_t ipu_ch;
  69         int ipu_di;
  70         u32 ipu_di_pix_fmt;
  71         unsigned char overlay;
  72         unsigned char alpha_chan_en;
  73         dma_addr_t alpha_phy_addr0;
  74         dma_addr_t alpha_phy_addr1;
  75         void *alpha_virt_addr0;
  76         void *alpha_virt_addr1;
  77         uint32_t alpha_mem_len;
  78         uint32_t cur_ipu_buf;
  79         uint32_t cur_ipu_alpha_buf;
  80
  81         u32 pseudo_palette[16];
  82 };
  83
  84 enum {
  85         BOTH_ON,
  86         SRC_ON,
  87         TGT_ON,
  88         BOTH_OFF
  89 };
  90
  91 static unsigned long default_bpp = 16;
  92 static unsigned char g_dp_in_use;
  93 static struct fb_info *mxcfb_info[3];
  94 static int ext_clk_used;
  95
  96 static uint32_t bpp_to_pixfmt(struct fb_info *fbi)
  97 {
  98         uint32_t pixfmt = 0;
  99
 100         debug("bpp_to_pixfmt: %d\n", fbi->var.bits_per_pixel);
 101
 102         if (fbi->var.nonstd)
 103                 return fbi->var.nonstd;
 104
 105         switch (fbi->var.bits_per_pixel) {
 106         case 24:
 107                 pixfmt = IPU_PIX_FMT_BGR24;
 108                 break;
 109         case 32:
 110                 pixfmt = IPU_PIX_FMT_BGR32;
 111                 break;
 112         case 16:
 113                 pixfmt = IPU_PIX_FMT_RGB565;
 114                 break;
 115         }
 116         return pixfmt;
 117 }
 118
 119 /*
 120  * Set fixed framebuffer parameters based on variable settings.
 121  *
 122  * @param       info     framebuffer information pointer
 123  */
 124 static int mxcfb_set_fix(struct fb_info *info)
 125 {
 126         struct fb_fix_screeninfo *fix = &info->fix;
 127         struct fb_var_screeninfo *var = &info->var;
 128
 129         fix->line_length = var->xres_virtual * var->bits_per_pixel / 8;
 130
 131         fix->type = FB_TYPE_PACKED_PIXELS;
 132         fix->accel = FB_ACCEL_NONE;
 133         fix->visual = FB_VISUAL_TRUECOLOR;
 134         fix->xpanstep = 1;
 135         fix->ypanstep = 1;
 136
 137         return 0;
 138 }
 139
 140 static int setup_disp_channel1(struct fb_info *fbi)
 141 {
 142         ipu_channel_params_t params;
 143         struct mxcfb_info *mxc_fbi = (struct mxcfb_info *)fbi->par;
 144
 145         memset(&params, 0, sizeof(params));
 146         params.mem_dp_bg_sync.di = mxc_fbi->ipu_di;
 147
 148         debug("%s called\n", __func__);
 149         /*
 150          * Assuming interlaced means yuv output, below setting also
 151          * valid for mem_dc_sync. FG should have the same vmode as BG.
 152          */
 153         if (fbi->var.vmode & FB_VMODE_INTERLACED) {
 154                 params.mem_dp_bg_sync.interlaced = 1;
 155                 params.mem_dp_bg_sync.out_pixel_fmt =
 156                         IPU_PIX_FMT_YUV444;
 157         } else {
 158                 if (mxc_fbi->ipu_di_pix_fmt) {
 159                         params.mem_dp_bg_sync.out_pixel_fmt =
 160                                 mxc_fbi->ipu_di_pix_fmt;
 161                 } else {
 162                         params.mem_dp_bg_sync.out_pixel_fmt =
 163                                 IPU_PIX_FMT_RGB666;
 164                 }
 165         }
 166         params.mem_dp_bg_sync.in_pixel_fmt = bpp_to_pixfmt(fbi);
 167         if (mxc_fbi->alpha_chan_en)
 168                 params.mem_dp_bg_sync.alpha_chan_en = 1;
 169
 170         ipu_init_channel(mxc_fbi->ipu_ch, &params);
 171
 172         return 0;
 173 }
 174
 175 static int setup_disp_channel2(struct fb_info *fbi)
 176 {
 177         int retval = 0;
 178         struct mxcfb_info *mxc_fbi = (struct mxcfb_info *)fbi->par;
 179
 180         mxc_fbi->cur_ipu_buf = 1;
 181         if (mxc_fbi->alpha_chan_en)
 182                 mxc_fbi->cur_ipu_alpha_buf = 1;
 183
 184         fbi->var.xoffset = fbi->var.yoffset = 0;
 185
 186         debug("%s: %x %d %d %d %lx %lx\n",
 187                 __func__,
 188                 mxc_fbi->ipu_ch,
 189                 fbi->var.xres,
 190                 fbi->var.yres,
 191                 fbi->fix.line_length,
 192                 fbi->fix.smem_start,
 193                 fbi->fix.smem_start +
 194                 (fbi->fix.line_length * fbi->var.yres));
 195
 196         retval = ipu_init_channel_buffer(mxc_fbi->ipu_ch, IPU_INPUT_BUFFER,
 197                                          bpp_to_pixfmt(fbi),
 198                                          fbi->var.xres, fbi->var.yres,
 199                                          fbi->fix.line_length,
 200                                          fbi->fix.smem_start +
 201                                          (fbi->fix.line_length * fbi->var.yres),
 202                                          fbi->fix.smem_start,
 203                                          0, 0);
 204         if (retval)
 205                 printf("ipu_init_channel_buffer error %d\n", retval);
 206
 207         return retval;
 208 }
 209
 210 /*
 211  * Set framebuffer parameters and change the operating mode.
 212  *
 213  * @param       info     framebuffer information pointer
 214  */
 215 static int mxcfb_set_par(struct fb_info *fbi)
 216 {
 217         int retval = 0;
 218         u32 mem_len;
 219         ipu_di_signal_cfg_t sig_cfg;
 220         struct mxcfb_info *mxc_fbi = (struct mxcfb_info *)fbi->par;
 221         uint32_t out_pixel_fmt;
 222
 223         ipu_disable_channel(mxc_fbi->ipu_ch);
 224         ipu_uninit_channel(mxc_fbi->ipu_ch);
 225         mxcfb_set_fix(fbi);
 226
 227         mem_len = fbi->var.yres_virtual * fbi->fix.line_length;
 228         if (!fbi->fix.smem_start || (mem_len > fbi->fix.smem_len)) {
 229                 if (fbi->fix.smem_start)
 230                         mxcfb_unmap_video_memory(fbi);
 231
 232                 if (mxcfb_map_video_memory(fbi) < 0)
 233                         return -ENOMEM;
 234         }
 235
 236         setup_disp_channel1(fbi);
 237
 238         memset(&sig_cfg, 0, sizeof(sig_cfg));
 239         if (fbi->var.vmode & FB_VMODE_INTERLACED) {
 240                 sig_cfg.interlaced = 1;
 241                 out_pixel_fmt = IPU_PIX_FMT_YUV444;
 242         } else {
 243                 if (mxc_fbi->ipu_di_pix_fmt)
 244                         out_pixel_fmt = mxc_fbi->ipu_di_pix_fmt;
 245                 else
 246                         out_pixel_fmt = IPU_PIX_FMT_RGB666;
 247         }
 248         if (fbi->var.vmode & FB_VMODE_ODD_FLD_FIRST) /* PAL */
 249                 sig_cfg.odd_field_first = 1;
 250         if ((fbi->var.sync & FB_SYNC_EXT) || ext_clk_used)
 251                 sig_cfg.ext_clk = 1;
 252         if (fbi->var.sync & FB_SYNC_HOR_HIGH_ACT)
 253                 sig_cfg.Hsync_pol = 1;
 254         if (fbi->var.sync & FB_SYNC_VERT_HIGH_ACT)
 255                 sig_cfg.Vsync_pol = 1;
 256         if (!(fbi->var.sync & FB_SYNC_CLK_LAT_FALL))
 257                 sig_cfg.clk_pol = 1;
 258         if (fbi->var.sync & FB_SYNC_DATA_INVERT)
 259                 sig_cfg.data_pol = 1;
 260         if (!(fbi->var.sync & FB_SYNC_OE_LOW_ACT))
 261                 sig_cfg.enable_pol = 1;
 262         if (fbi->var.sync & FB_SYNC_CLK_IDLE_EN)
 263                 sig_cfg.clkidle_en = 1;
 264
 265         debug("pixclock = %lu Hz\n", PICOS2KHZ(fbi->var.pixclock) * 1000UL);
 266
 267         if (ipu_init_sync_panel(mxc_fbi->ipu_di,
 268                                 (PICOS2KHZ(fbi->var.pixclock)) * 1000UL,
 269                                 fbi->var.xres, fbi->var.yres,
 270                                 out_pixel_fmt,
 271                                 fbi->var.left_margin,
 272                                 fbi->var.hsync_len,
 273                                 fbi->var.right_margin,
 274                                 fbi->var.upper_margin,
 275                                 fbi->var.vsync_len,
 276                                 fbi->var.lower_margin,
 277                                 0, sig_cfg) != 0) {
 278                 puts("mxcfb: Error initializing panel.\n");
 279                 return -EINVAL;
 280         }
 281
 282         retval = setup_disp_channel2(fbi);
 283         if (retval)
 284                 return retval;
 285
 286         if (mxc_fbi->blank == FB_BLANK_UNBLANK)
 287                 ipu_enable_channel(mxc_fbi->ipu_ch);
 288
 289         return retval;
 290 }
 291
 292 /*
 293  * Check framebuffer variable parameters and adjust to valid values.
 294  *
 295  * @param       var      framebuffer variable parameters
 296  *
 297  * @param       info     framebuffer information pointer
 298  */
 299 static int mxcfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
 300 {
 301         u32 vtotal;
 302         u32 htotal;
 303
 304         if (var->xres_virtual < var->xres)
 305                 var->xres_virtual = var->xres;
 306         if (var->yres_virtual < var->yres)
 307                 var->yres_virtual = var->yres;
 308
 309         if ((var->bits_per_pixel != 32) && (var->bits_per_pixel != 24) &&
 310             (var->bits_per_pixel != 16) && (var->bits_per_pixel != 8))
 311                 var->bits_per_pixel = default_bpp;
 312
 313         switch (var->bits_per_pixel) {
 314         case 8:
 315                 var->red.length = 3;
 316                 var->red.offset = 5;
 317                 var->red.msb_right = 0;
 318
 319                 var->green.length = 3;
 320                 var->green.offset = 2;
 321                 var->green.msb_right = 0;
 322
 323                 var->blue.length = 2;
 324                 var->blue.offset = 0;
 325                 var->blue.msb_right = 0;
 326
 327                 var->transp.length = 0;
 328                 var->transp.offset = 0;
 329                 var->transp.msb_right = 0;
 330                 break;
 331         case 16:
 332                 var->red.length = 5;
 333                 var->red.offset = 11;
 334                 var->red.msb_right = 0;
 335
 336                 var->green.length = 6;
 337                 var->green.offset = 5;
 338                 var->green.msb_right = 0;
 339
 340                 var->blue.length = 5;
 341                 var->blue.offset = 0;
 342                 var->blue.msb_right = 0;
 343
 344                 var->transp.length = 0;
 345                 var->transp.offset = 0;
 346                 var->transp.msb_right = 0;
 347                 break;
 348         case 24:
 349                 var->red.length = 8;
 350                 var->red.offset = 16;
 351                 var->red.msb_right = 0;
 352
 353                 var->green.length = 8;
 354                 var->green.offset = 8;
 355                 var->green.msb_right = 0;
 356
 357                 var->blue.length = 8;
 358                 var->blue.offset = 0;
 359                 var->blue.msb_right = 0;
 360
 361                 var->transp.length = 0;
 362                 var->transp.offset = 0;
 363                 var->transp.msb_right = 0;
 364                 break;
 365         case 32:
 366                 var->red.length = 8;
 367                 var->red.offset = 16;
 368                 var->red.msb_right = 0;
 369
 370                 var->green.length = 8;
 371                 var->green.offset = 8;
 372                 var->green.msb_right = 0;
 373
 374                 var->blue.length = 8;
 375                 var->blue.offset = 0;
 376                 var->blue.msb_right = 0;
 377
 378                 var->transp.length = 8;
 379                 var->transp.offset = 24;
 380                 var->transp.msb_right = 0;
 381                 break;
 382         }
 383
 384         if (var->pixclock < 1000) {
 385                 htotal = var->xres + var->right_margin + var->hsync_len +
 386                     var->left_margin;
 387                 vtotal = var->yres + var->lower_margin + var->vsync_len +
 388                     var->upper_margin;
 389                 var->pixclock = (vtotal * htotal * 6UL) / 100UL;
 390                 var->pixclock = KHZ2PICOS(var->pixclock);
 391                 printf("pixclock set for 60Hz refresh = %u ps\n",
 392                         var->pixclock);
 393         }
 394
 395         var->height = -1;
 396         var->width = -1;
 397         var->grayscale = 0;
 398
 399         return 0;
 400 }
 401
 402 static int mxcfb_map_video_memory(struct fb_info *fbi)
 403 {
 404         if (fbi->fix.smem_len < fbi->var.yres_virtual * fbi->fix.line_length) {
 405                 fbi->fix.smem_len = fbi->var.yres_virtual *
 406                                     fbi->fix.line_length;
 407         }
 408         fbi->fix.smem_len = roundup(fbi->fix.smem_len, ARCH_DMA_MINALIGN);
 409
 410 #if CONFIG_IS_ENABLED(DM_VIDEO)
 411         fbi->screen_base = (char *)gd->video_bottom;
 412 #else
 413         fbi->screen_base = (char *)memalign(ARCH_DMA_MINALIGN,
 414                                             fbi->fix.smem_len);
 415 #endif
 416
 417         fbi->fix.smem_start = (unsigned long)fbi->screen_base;
 418         if (fbi->screen_base == 0) {
 419                 puts("Unable to allocate framebuffer memory\n");
 420                 fbi->fix.smem_len = 0;
 421                 fbi->fix.smem_start = 0;
 422                 return -EBUSY;
 423         }
 424
 425         debug("allocated fb @ paddr=0x%08X, size=%d.\n",
 426                 (uint32_t) fbi->fix.smem_start, fbi->fix.smem_len);
 427
 428         fbi->screen_size = fbi->fix.smem_len;
 429
 430 #if CONFIG_IS_ENABLED(VIDEO)
 431         gd->fb_base = fbi->fix.smem_start;
 432 #endif
 433
 434         /* Clear the screen */
 435         memset((char *)fbi->screen_base, 0, fbi->fix.smem_len);
 436
 437         return 0;
 438 }
 439
 440 static int mxcfb_unmap_video_memory(struct fb_info *fbi)
 441 {
 442         fbi->screen_base = 0;
 443         fbi->fix.smem_start = 0;
 444         fbi->fix.smem_len = 0;
 445         return 0;
 446 }
 447
 448 /*
 449  * Initializes the framebuffer information pointer. After allocating
 450  * sufficient memory for the framebuffer structure, the fields are
 451  * filled with custom information passed in from the configurable
 452  * structures.  This includes information such as bits per pixel,
 453  * color maps, screen width/height and RGBA offsets.
 454  *
 455  * @return      Framebuffer structure initialized with our information
 456  */
 457 static struct fb_info *mxcfb_init_fbinfo(void)
 458 {
 459 #define BYTES_PER_LONG 4
 460 #define PADDING (BYTES_PER_LONG - (sizeof(struct fb_info) % BYTES_PER_LONG))
 461         struct fb_info *fbi;
 462         struct mxcfb_info *mxcfbi;
 463         char *p;
 464         int size = sizeof(struct mxcfb_info) + PADDING +
 465                 sizeof(struct fb_info);
 466
 467         debug("%s: %d %d %d %d\n",
 468                 __func__,
 469                 PADDING,
 470                 size,
 471                 sizeof(struct mxcfb_info),
 472                 sizeof(struct fb_info));
 473         /*
 474          * Allocate sufficient memory for the fb structure
 475          */
 476
 477         p = malloc(size);
 478         if (!p)
 479                 return NULL;
 480
 481         memset(p, 0, size);
 482
 483         fbi = (struct fb_info *)p;
 484         fbi->par = p + sizeof(struct fb_info) + PADDING;
 485
 486         mxcfbi = (struct mxcfb_info *)fbi->par;
 487         debug("Framebuffer structures at: fbi=0x%x mxcfbi=0x%x\n",
 488                 (unsigned int)fbi, (unsigned int)mxcfbi);
 489
 490         fbi->var.activate = FB_ACTIVATE_NOW;
 491
 492         fbi->flags = FBINFO_FLAG_DEFAULT;
 493         fbi->pseudo_palette = mxcfbi->pseudo_palette;
 494
 495         return fbi;
 496 }
 497
 498 /*
 499  * Probe routine for the framebuffer driver. It is called during the
 500  * driver binding process. The following functions are performed in
 501  * this routine: Framebuffer initialization, Memory allocation and
 502  * mapping, Framebuffer registration, IPU initialization.
 503  *
 504  * @return      Appropriate error code to the kernel common code
 505  */
 506 static int mxcfb_probe(u32 interface_pix_fmt, uint8_t disp,
 507                         struct fb_videomode const *mode)
 508 {
 509         struct fb_info *fbi;
 510         struct mxcfb_info *mxcfbi;
 511         int ret = 0;
 512
 513         /*
 514          * Initialize FB structures
 515          */
 516         fbi = mxcfb_init_fbinfo();
 517         if (!fbi) {
 518                 ret = -ENOMEM;
 519                 goto err0;
 520         }
 521         mxcfbi = (struct mxcfb_info *)fbi->par;
 522
 523         if (!g_dp_in_use) {
 524                 mxcfbi->ipu_ch = MEM_BG_SYNC;
 525                 mxcfbi->blank = FB_BLANK_UNBLANK;
 526         } else {
 527                 mxcfbi->ipu_ch = MEM_DC_SYNC;
 528                 mxcfbi->blank = FB_BLANK_POWERDOWN;
 529         }
 530
 531         mxcfbi->ipu_di = disp;
 532
 533         ipu_disp_set_global_alpha(mxcfbi->ipu_ch, 1, 0x80);
 534         ipu_disp_set_color_key(mxcfbi->ipu_ch, 0, 0);
 535         strcpy(fbi->fix.id, "DISP3 BG");
 536
 537         g_dp_in_use = 1;
 538
 539         mxcfb_info[mxcfbi->ipu_di] = fbi;
 540
 541         /* Need dummy values until real panel is configured */
 542
 543         mxcfbi->ipu_di_pix_fmt = interface_pix_fmt;
 544         fb_videomode_to_var(&fbi->var, mode);
 545         fbi->var.bits_per_pixel = 16;
 546         fbi->fix.line_length = fbi->var.xres * (fbi->var.bits_per_pixel / 8);
 547         fbi->fix.smem_len = fbi->var.yres_virtual * fbi->fix.line_length;
 548
 549         mxcfb_check_var(&fbi->var, fbi);
 550
 551         /* Default Y virtual size is 2x panel size */
 552         fbi->var.yres_virtual = fbi->var.yres * 2;
 553
 554         mxcfb_set_fix(fbi);
 555
 556         /* allocate fb first */
 557         if (mxcfb_map_video_memory(fbi) < 0)
 558                 return -ENOMEM;
 559
 560         mxcfb_set_par(fbi);
 561
 562         panel.winSizeX = mode->xres;
 563         panel.winSizeY = mode->yres;
 564         panel.plnSizeX = mode->xres;
 565         panel.plnSizeY = mode->yres;
 566
 567         panel.frameAdrs = (u32)fbi->screen_base;
 568         panel.memSize = fbi->screen_size;
 569
 570         panel.gdfBytesPP = 2;
 571         panel.gdfIndex = GDF_16BIT_565RGB;
 572
 573         ipu_dump_registers();
 574
 575         return 0;
 576
 577 err0:
 578         return ret;
 579 }
 580
 581 void ipuv3_fb_shutdown(void)
 582 {
 583         int i;
 584         struct ipu_stat *stat = (struct ipu_stat *)IPU_STAT;
 585
 586         if (!ipu_clk_enabled())
 587                 return;
 588
 589         for (i = 0; i < ARRAY_SIZE(mxcfb_info); i++) {
 590                 struct fb_info *fbi = mxcfb_info[i];
 591                 if (fbi) {
 592                         struct mxcfb_info *mxc_fbi = fbi->par;
 593                         ipu_disable_channel(mxc_fbi->ipu_ch);
 594                         ipu_uninit_channel(mxc_fbi->ipu_ch);
 595                 }
 596         }
 597         for (i = 0; i < ARRAY_SIZE(stat->int_stat); i++) {
 598                 __raw_writel(__raw_readl(&stat->int_stat[i]),
 599                              &stat->int_stat[i]);
 600         }
 601 }
 602
 603 void *video_hw_init(void)
 604 {
 605         int ret;
 606
 607         ret = ipu_probe();
 608         if (ret)
 609                 puts("Error initializing IPU\n");
 610
 611         ret = mxcfb_probe(gpixfmt, gdisp, gmode);
 612         debug("Framebuffer at 0x%x\n", (unsigned int)panel.frameAdrs);
 613         gd->fb_base = panel.frameAdrs;
 614
 615         return (void *)&panel;
 616 }
 617
 618 int ipuv3_fb_init(struct fb_videomode const *mode,
 619                   uint8_t disp,
 620                   uint32_t pixfmt)
 621 {
 622         gmode = mode;
 623         gdisp = disp;
 624         gpixfmt = pixfmt;
 625
 626         return 0;
 627 }
 628
 629 #if CONFIG_IS_ENABLED(DM_VIDEO)
 630 enum {
 631         /* Maximum display size we support */
 632         LCD_MAX_WIDTH           = 1920,
 633         LCD_MAX_HEIGHT          = 1080,
 634         LCD_MAX_LOG2_BPP        = VIDEO_BPP16,
 635 };
 636
 637 static int ipuv3_video_probe(struct udevice *dev)
 638 {
 639         struct video_uc_platdata *plat = dev_get_uclass_platdata(dev);
 640         struct video_priv *uc_priv = dev_get_uclass_priv(dev);
 641 #if defined(CONFIG_DISPLAY)
 642         struct udevice *disp_dev;
 643 #endif
 644         u32 fb_start, fb_end;
 645         int ret;
 646
 647         debug("%s() plat: base 0x%lx, size 0x%x\n",
 648               __func__, plat->base, plat->size);
 649
 650         ret = ipu_probe();
 651         if (ret)
 652                 return ret;
 653
 654         ret = ipu_displays_init();
 655         if (ret < 0)
 656                 return ret;
 657
 658         ret = mxcfb_probe(gpixfmt, gdisp, gmode);
 659         if (ret < 0)
 660                 return ret;
 661
 662 #if defined(CONFIG_DISPLAY)
 663         ret = uclass_first_device(UCLASS_DISPLAY, &disp_dev);
 664         if (disp_dev) {
 665                 ret = display_enable(disp_dev, 16, NULL);
 666                 if (ret < 0)
 667                         return ret;
 668         }
 669 #endif
 670
 671         uc_priv->xsize = gmode->xres;
 672         uc_priv->ysize = gmode->yres;
 673         uc_priv->bpix = LCD_MAX_LOG2_BPP;
 674
 675         /* Enable dcache for the frame buffer */
 676         fb_start = plat->base & ~(MMU_SECTION_SIZE - 1);
 677         fb_end = plat->base + plat->size;
 678         fb_end = ALIGN(fb_end, 1 << MMU_SECTION_SHIFT);
 679         mmu_set_region_dcache_behaviour(fb_start, fb_end - fb_start,
 680                                         DCACHE_WRITEBACK);
 681         video_set_flush_dcache(dev, true);
 682         gd->fb_base = fb_start;
 683
 684         return 0;
 685 }
 686
 687 struct ipuv3_video_priv {
 688         ulong regs;
 689 };
 690
 691 static int ipuv3_video_bind(struct udevice *dev)
 692 {
 693         struct video_uc_platdata *plat = dev_get_uclass_platdata(dev);
 694
 695         plat->size = LCD_MAX_WIDTH * LCD_MAX_HEIGHT *
 696                      (1 << VIDEO_BPP32) / 8;
 697
 698         return 0;
 699 }
 700
 701 static const struct udevice_id ipuv3_video_ids[] = {
 702         { .compatible = "fsl,imx6q-ipu" },
 703         { .compatible = "fsl,imx53-ipu" },
 704         { }
 705 };
 706
 707 U_BOOT_DRIVER(ipuv3_video) = {
 708         .name   = "ipuv3_video",
 709         .id     = UCLASS_VIDEO,
 710         .of_match = ipuv3_video_ids,
 711         .bind   = ipuv3_video_bind,
 712         .probe  = ipuv3_video_probe,
 713         .priv_auto_alloc_size = sizeof(struct ipuv3_video_priv),
 714         .flags  = DM_FLAG_PRE_RELOC,
 715 };
 716 #endif /* CONFIG_DM_VIDEO */