drivers/video/omap2/omapfb/omapfb-main.c

   1 /*
   2  * linux/drivers/video/omap2/omapfb-main.c
   3  *
   4  * Copyright (C) 2008 Nokia Corporation
   5  * Author: Tomi Valkeinen <tomi.valkeinen@nokia.com>
   6  *
   7  * Some code and ideas taken from drivers/video/omap/ driver
   8  * by Imre Deak.
   9  *
  10  * This program is free software; you can redistribute it and/or modify it
  11  * under the terms of the GNU General Public License version 2 as published by
  12  * the Free Software Foundation.
  13  *
  14  * This program is distributed in the hope that it will be useful, but WITHOUT
  15  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  16  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  17  * more details.
  18  *
  19  * You should have received a copy of the GNU General Public License along with
  20  * this program.  If not, see <http://www.gnu.org/licenses/>.
  21  */
  22
  23 #include <linux/module.h>
  24 #include <linux/delay.h>
  25 #include <linux/fb.h>
  26 #include <linux/dma-mapping.h>
  27 #include <linux/vmalloc.h>
  28 #include <linux/device.h>
  29 #include <linux/platform_device.h>
  30 #include <linux/omapfb.h>
  31
  32 #include <plat/display.h>
  33 #include <plat/vram.h>
  34 #include <plat/vrfb.h>
  35
  36 #include "omapfb.h"
  37
  38 #define MODULE_NAME     "omapfb"
  39
  40 #define OMAPFB_PLANE_XRES_MIN           8
  41 #define OMAPFB_PLANE_YRES_MIN           8
  42
  43 static char *def_mode;
  44 static char *def_vram;
  45 static int def_vrfb;
  46 static int def_rotate;
  47 static int def_mirror;
  48
  49 #ifdef DEBUG
  50 unsigned int omapfb_debug;
  51 module_param_named(debug, omapfb_debug, bool, 0644);
  52 static unsigned int omapfb_test_pattern;
  53 module_param_named(test, omapfb_test_pattern, bool, 0644);
  54 #endif
  55
  56 static int omapfb_fb_init(struct omapfb2_device *fbdev, struct fb_info *fbi);
  57 static int omapfb_get_recommended_bpp(struct omapfb2_device *fbdev,
  58                 struct omap_dss_device *dssdev);
  59
  60 #ifdef DEBUG
  61 static void draw_pixel(struct fb_info *fbi, int x, int y, unsigned color)
  62 {
  63         struct fb_var_screeninfo *var = &fbi->var;
  64         struct fb_fix_screeninfo *fix = &fbi->fix;
  65         void __iomem *addr = fbi->screen_base;
  66         const unsigned bytespp = var->bits_per_pixel >> 3;
  67         const unsigned line_len = fix->line_length / bytespp;
  68
  69         int r = (color >> 16) & 0xff;
  70         int g = (color >> 8) & 0xff;
  71         int b = (color >> 0) & 0xff;
  72
  73         if (var->bits_per_pixel == 16) {
  74                 u16 __iomem *p = (u16 __iomem *)addr;
  75                 p += y * line_len + x;
  76
  77                 r = r * 32 / 256;
  78                 g = g * 64 / 256;
  79                 b = b * 32 / 256;
  80
  81                 __raw_writew((r << 11) | (g << 5) | (b << 0), p);
  82         } else if (var->bits_per_pixel == 24) {
  83                 u8 __iomem *p = (u8 __iomem *)addr;
  84                 p += (y * line_len + x) * 3;
  85
  86                 __raw_writeb(b, p + 0);
  87                 __raw_writeb(g, p + 1);
  88                 __raw_writeb(r, p + 2);
  89         } else if (var->bits_per_pixel == 32) {
  90                 u32 __iomem *p = (u32 __iomem *)addr;
  91                 p += y * line_len + x;
  92                 __raw_writel(color, p);
  93         }
  94 }
  95
  96 static void fill_fb(struct fb_info *fbi)
  97 {
  98         struct fb_var_screeninfo *var = &fbi->var;
  99         const short w = var->xres_virtual;
 100         const short h = var->yres_virtual;
 101         void __iomem *addr = fbi->screen_base;
 102         int y, x;
 103
 104         if (!addr)
 105                 return;
 106
 107         DBG("fill_fb %dx%d, line_len %d bytes\n", w, h, fbi->fix.line_length);
 108
 109         for (y = 0; y < h; y++) {
 110                 for (x = 0; x < w; x++) {
 111                         if (x < 20 && y < 20)
 112                                 draw_pixel(fbi, x, y, 0xffffff);
 113                         else if (x < 20 && (y > 20 && y < h - 20))
 114                                 draw_pixel(fbi, x, y, 0xff);
 115                         else if (y < 20 && (x > 20 && x < w - 20))
 116                                 draw_pixel(fbi, x, y, 0xff00);
 117                         else if (x > w - 20 && (y > 20 && y < h - 20))
 118                                 draw_pixel(fbi, x, y, 0xff0000);
 119                         else if (y > h - 20 && (x > 20 && x < w - 20))
 120                                 draw_pixel(fbi, x, y, 0xffff00);
 121                         else if (x == 20 || x == w - 20 ||
 122                                         y == 20 || y == h - 20)
 123                                 draw_pixel(fbi, x, y, 0xffffff);
 124                         else if (x == y || w - x == h - y)
 125                                 draw_pixel(fbi, x, y, 0xff00ff);
 126                         else if (w - x == y || x == h - y)
 127                                 draw_pixel(fbi, x, y, 0x00ffff);
 128                         else if (x > 20 && y > 20 && x < w - 20 && y < h - 20) {
 129                                 int t = x * 3 / w;
 130                                 unsigned r = 0, g = 0, b = 0;
 131                                 unsigned c;
 132                                 if (var->bits_per_pixel == 16) {
 133                                         if (t == 0)
 134                                                 b = (y % 32) * 256 / 32;
 135                                         else if (t == 1)
 136                                                 g = (y % 64) * 256 / 64;
 137                                         else if (t == 2)
 138                                                 r = (y % 32) * 256 / 32;
 139                                 } else {
 140                                         if (t == 0)
 141                                                 b = (y % 256);
 142                                         else if (t == 1)
 143                                                 g = (y % 256);
 144                                         else if (t == 2)
 145                                                 r = (y % 256);
 146                                 }
 147                                 c = (r << 16) | (g << 8) | (b << 0);
 148                                 draw_pixel(fbi, x, y, c);
 149                         } else {
 150                                 draw_pixel(fbi, x, y, 0);
 151                         }
 152                 }
 153         }
 154 }
 155 #endif
 156
 157 static unsigned omapfb_get_vrfb_offset(const struct omapfb_info *ofbi, int rot)
 158 {
 159         const struct vrfb *vrfb = &ofbi->region.vrfb;
 160         unsigned offset;
 161
 162         switch (rot) {
 163         case FB_ROTATE_UR:
 164                 offset = 0;
 165                 break;
 166         case FB_ROTATE_CW:
 167                 offset = vrfb->yoffset;
 168                 break;
 169         case FB_ROTATE_UD:
 170                 offset = vrfb->yoffset * OMAP_VRFB_LINE_LEN + vrfb->xoffset;
 171                 break;
 172         case FB_ROTATE_CCW:
 173                 offset = vrfb->xoffset * OMAP_VRFB_LINE_LEN;
 174                 break;
 175         default:
 176                 BUG();
 177         }
 178
 179         offset *= vrfb->bytespp;
 180
 181         return offset;
 182 }
 183
 184 static u32 omapfb_get_region_rot_paddr(const struct omapfb_info *ofbi, int rot)
 185 {
 186         if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
 187                 return ofbi->region.vrfb.paddr[rot]
 188                         + omapfb_get_vrfb_offset(ofbi, rot);
 189         } else {
 190                 return ofbi->region.paddr;
 191         }
 192 }
 193
 194 static u32 omapfb_get_region_paddr(const struct omapfb_info *ofbi)
 195 {
 196         if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
 197                 return ofbi->region.vrfb.paddr[0];
 198         else
 199                 return ofbi->region.paddr;
 200 }
 201
 202 static void __iomem *omapfb_get_region_vaddr(const struct omapfb_info *ofbi)
 203 {
 204         if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
 205                 return ofbi->region.vrfb.vaddr[0];
 206         else
 207                 return ofbi->region.vaddr;
 208 }
 209
 210 static struct omapfb_colormode omapfb_colormodes[] = {
 211         {
 212                 .dssmode = OMAP_DSS_COLOR_UYVY,
 213                 .bits_per_pixel = 16,
 214                 .nonstd = OMAPFB_COLOR_YUV422,
 215         }, {
 216                 .dssmode = OMAP_DSS_COLOR_YUV2,
 217                 .bits_per_pixel = 16,
 218                 .nonstd = OMAPFB_COLOR_YUY422,
 219         }, {
 220                 .dssmode = OMAP_DSS_COLOR_ARGB16,
 221                 .bits_per_pixel = 16,
 222                 .red    = { .length = 4, .offset = 8, .msb_right = 0 },
 223                 .green  = { .length = 4, .offset = 4, .msb_right = 0 },
 224                 .blue   = { .length = 4, .offset = 0, .msb_right = 0 },
 225                 .transp = { .length = 4, .offset = 12, .msb_right = 0 },
 226         }, {
 227                 .dssmode = OMAP_DSS_COLOR_RGB16,
 228                 .bits_per_pixel = 16,
 229                 .red    = { .length = 5, .offset = 11, .msb_right = 0 },
 230                 .green  = { .length = 6, .offset = 5, .msb_right = 0 },
 231                 .blue   = { .length = 5, .offset = 0, .msb_right = 0 },
 232                 .transp = { .length = 0, .offset = 0, .msb_right = 0 },
 233         }, {
 234                 .dssmode = OMAP_DSS_COLOR_RGB24P,
 235                 .bits_per_pixel = 24,
 236                 .red    = { .length = 8, .offset = 16, .msb_right = 0 },
 237                 .green  = { .length = 8, .offset = 8, .msb_right = 0 },
 238                 .blue   = { .length = 8, .offset = 0, .msb_right = 0 },
 239                 .transp = { .length = 0, .offset = 0, .msb_right = 0 },
 240         }, {
 241                 .dssmode = OMAP_DSS_COLOR_RGB24U,
 242                 .bits_per_pixel = 32,
 243                 .red    = { .length = 8, .offset = 16, .msb_right = 0 },
 244                 .green  = { .length = 8, .offset = 8, .msb_right = 0 },
 245                 .blue   = { .length = 8, .offset = 0, .msb_right = 0 },
 246                 .transp = { .length = 0, .offset = 0, .msb_right = 0 },
 247         }, {
 248                 .dssmode = OMAP_DSS_COLOR_ARGB32,
 249                 .bits_per_pixel = 32,
 250                 .red    = { .length = 8, .offset = 16, .msb_right = 0 },
 251                 .green  = { .length = 8, .offset = 8, .msb_right = 0 },
 252                 .blue   = { .length = 8, .offset = 0, .msb_right = 0 },
 253                 .transp = { .length = 8, .offset = 24, .msb_right = 0 },
 254         }, {
 255                 .dssmode = OMAP_DSS_COLOR_RGBA32,
 256                 .bits_per_pixel = 32,
 257                 .red    = { .length = 8, .offset = 24, .msb_right = 0 },
 258                 .green  = { .length = 8, .offset = 16, .msb_right = 0 },
 259                 .blue   = { .length = 8, .offset = 8, .msb_right = 0 },
 260                 .transp = { .length = 8, .offset = 0, .msb_right = 0 },
 261         }, {
 262                 .dssmode = OMAP_DSS_COLOR_RGBX32,
 263                 .bits_per_pixel = 32,
 264                 .red    = { .length = 8, .offset = 24, .msb_right = 0 },
 265                 .green  = { .length = 8, .offset = 16, .msb_right = 0 },
 266                 .blue   = { .length = 8, .offset = 8, .msb_right = 0 },
 267                 .transp = { .length = 0, .offset = 0, .msb_right = 0 },
 268         },
 269 };
 270
 271 static bool cmp_var_to_colormode(struct fb_var_screeninfo *var,
 272                 struct omapfb_colormode *color)
 273 {
 274         bool cmp_component(struct fb_bitfield *f1, struct fb_bitfield *f2)
 275         {
 276                 return f1->length == f2->length &&
 277                         f1->offset == f2->offset &&
 278                         f1->msb_right == f2->msb_right;
 279         }
 280
 281         if (var->bits_per_pixel == 0 ||
 282                         var->red.length == 0 ||
 283                         var->blue.length == 0 ||
 284                         var->green.length == 0)
 285                 return 0;
 286
 287         return var->bits_per_pixel == color->bits_per_pixel &&
 288                 cmp_component(&var->red, &color->red) &&
 289                 cmp_component(&var->green, &color->green) &&
 290                 cmp_component(&var->blue, &color->blue) &&
 291                 cmp_component(&var->transp, &color->transp);
 292 }
 293
 294 static void assign_colormode_to_var(struct fb_var_screeninfo *var,
 295                 struct omapfb_colormode *color)
 296 {
 297         var->bits_per_pixel = color->bits_per_pixel;
 298         var->nonstd = color->nonstd;
 299         var->red = color->red;
 300         var->green = color->green;
 301         var->blue = color->blue;
 302         var->transp = color->transp;
 303 }
 304
 305 static int fb_mode_to_dss_mode(struct fb_var_screeninfo *var,
 306                 enum omap_color_mode *mode)
 307 {
 308         enum omap_color_mode dssmode;
 309         int i;
 310
 311         /* first match with nonstd field */
 312         if (var->nonstd) {
 313                 for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) {
 314                         struct omapfb_colormode *m = &omapfb_colormodes[i];
 315                         if (var->nonstd == m->nonstd) {
 316                                 assign_colormode_to_var(var, m);
 317                                 *mode = m->dssmode;
 318                                 return 0;
 319                         }
 320                 }
 321
 322                 return -EINVAL;
 323         }
 324
 325         /* then try exact match of bpp and colors */
 326         for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) {
 327                 struct omapfb_colormode *m = &omapfb_colormodes[i];
 328                 if (cmp_var_to_colormode(var, m)) {
 329                         assign_colormode_to_var(var, m);
 330                         *mode = m->dssmode;
 331                         return 0;
 332                 }
 333         }
 334
 335         /* match with bpp if user has not filled color fields
 336          * properly */
 337         switch (var->bits_per_pixel) {
 338         case 1:
 339                 dssmode = OMAP_DSS_COLOR_CLUT1;
 340                 break;
 341         case 2:
 342                 dssmode = OMAP_DSS_COLOR_CLUT2;
 343                 break;
 344         case 4:
 345                 dssmode = OMAP_DSS_COLOR_CLUT4;
 346                 break;
 347         case 8:
 348                 dssmode = OMAP_DSS_COLOR_CLUT8;
 349                 break;
 350         case 12:
 351                 dssmode = OMAP_DSS_COLOR_RGB12U;
 352                 break;
 353         case 16:
 354                 dssmode = OMAP_DSS_COLOR_RGB16;
 355                 break;
 356         case 24:
 357                 dssmode = OMAP_DSS_COLOR_RGB24P;
 358                 break;
 359         case 32:
 360                 dssmode = OMAP_DSS_COLOR_RGB24U;
 361                 break;
 362         default:
 363                 return -EINVAL;
 364         }
 365
 366         for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) {
 367                 struct omapfb_colormode *m = &omapfb_colormodes[i];
 368                 if (dssmode == m->dssmode) {
 369                         assign_colormode_to_var(var, m);
 370                         *mode = m->dssmode;
 371                         return 0;
 372                 }
 373         }
 374
 375         return -EINVAL;
 376 }
 377
 378 static int check_fb_res_bounds(struct fb_var_screeninfo *var)
 379 {
 380         int xres_min = OMAPFB_PLANE_XRES_MIN;
 381         int xres_max = 2048;
 382         int yres_min = OMAPFB_PLANE_YRES_MIN;
 383         int yres_max = 2048;
 384
 385         /* XXX: some applications seem to set virtual res to 0. */
 386         if (var->xres_virtual == 0)
 387                 var->xres_virtual = var->xres;
 388
 389         if (var->yres_virtual == 0)
 390                 var->yres_virtual = var->yres;
 391
 392         if (var->xres_virtual < xres_min || var->yres_virtual < yres_min)
 393                 return -EINVAL;
 394
 395         if (var->xres < xres_min)
 396                 var->xres = xres_min;
 397         if (var->yres < yres_min)
 398                 var->yres = yres_min;
 399         if (var->xres > xres_max)
 400                 var->xres = xres_max;
 401         if (var->yres > yres_max)
 402                 var->yres = yres_max;
 403
 404         if (var->xres > var->xres_virtual)
 405                 var->xres = var->xres_virtual;
 406         if (var->yres > var->yres_virtual)
 407                 var->yres = var->yres_virtual;
 408
 409         return 0;
 410 }
 411
 412 static void shrink_height(unsigned long max_frame_size,
 413                 struct fb_var_screeninfo *var)
 414 {
 415         DBG("can't fit FB into memory, reducing y\n");
 416         var->yres_virtual = max_frame_size /
 417                 (var->xres_virtual * var->bits_per_pixel >> 3);
 418
 419         if (var->yres_virtual < OMAPFB_PLANE_YRES_MIN)
 420                 var->yres_virtual = OMAPFB_PLANE_YRES_MIN;
 421
 422         if (var->yres > var->yres_virtual)
 423                 var->yres = var->yres_virtual;
 424 }
 425
 426 static void shrink_width(unsigned long max_frame_size,
 427                 struct fb_var_screeninfo *var)
 428 {
 429         DBG("can't fit FB into memory, reducing x\n");
 430         var->xres_virtual = max_frame_size / var->yres_virtual /
 431                 (var->bits_per_pixel >> 3);
 432
 433         if (var->xres_virtual < OMAPFB_PLANE_XRES_MIN)
 434                 var->xres_virtual = OMAPFB_PLANE_XRES_MIN;
 435
 436         if (var->xres > var->xres_virtual)
 437                 var->xres = var->xres_virtual;
 438 }
 439
 440 static int check_vrfb_fb_size(unsigned long region_size,
 441                 const struct fb_var_screeninfo *var)
 442 {
 443         unsigned long min_phys_size = omap_vrfb_min_phys_size(var->xres_virtual,
 444                 var->yres_virtual, var->bits_per_pixel >> 3);
 445
 446         return min_phys_size > region_size ? -EINVAL : 0;
 447 }
 448
 449 static int check_fb_size(const struct omapfb_info *ofbi,
 450                 struct fb_var_screeninfo *var)
 451 {
 452         unsigned long max_frame_size = ofbi->region.size;
 453         int bytespp = var->bits_per_pixel >> 3;
 454         unsigned long line_size = var->xres_virtual * bytespp;
 455
 456         if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
 457                 /* One needs to check for both VRFB and OMAPFB limitations. */
 458                 if (check_vrfb_fb_size(max_frame_size, var))
 459                         shrink_height(omap_vrfb_max_height(
 460                                 max_frame_size, var->xres_virtual, bytespp) *
 461                                 line_size, var);
 462
 463                 if (check_vrfb_fb_size(max_frame_size, var)) {
 464                         DBG("cannot fit FB to memory\n");
 465                         return -EINVAL;
 466                 }
 467
 468                 return 0;
 469         }
 470
 471         DBG("max frame size %lu, line size %lu\n", max_frame_size, line_size);
 472
 473         if (line_size * var->yres_virtual > max_frame_size)
 474                 shrink_height(max_frame_size, var);
 475
 476         if (line_size * var->yres_virtual > max_frame_size) {
 477                 shrink_width(max_frame_size, var);
 478                 line_size = var->xres_virtual * bytespp;
 479         }
 480
 481         if (line_size * var->yres_virtual > max_frame_size) {
 482                 DBG("cannot fit FB to memory\n");
 483                 return -EINVAL;
 484         }
 485
 486         return 0;
 487 }
 488
 489 /*
 490  * Consider if VRFB assisted rotation is in use and if the virtual space for
 491  * the zero degree view needs to be mapped. The need for mapping also acts as
 492  * the trigger for setting up the hardware on the context in question. This
 493  * ensures that one does not attempt to access the virtual view before the
 494  * hardware is serving the address translations.
 495  */
 496 static int setup_vrfb_rotation(struct fb_info *fbi)
 497 {
 498         struct omapfb_info *ofbi = FB2OFB(fbi);
 499         struct omapfb2_mem_region *rg = &ofbi->region;
 500         struct vrfb *vrfb = &rg->vrfb;
 501         struct fb_var_screeninfo *var = &fbi->var;
 502         struct fb_fix_screeninfo *fix = &fbi->fix;
 503         unsigned bytespp;
 504         bool yuv_mode;
 505         enum omap_color_mode mode;
 506         int r;
 507         bool reconf;
 508
 509         if (!rg->size || ofbi->rotation_type != OMAP_DSS_ROT_VRFB)
 510                 return 0;
 511
 512         DBG("setup_vrfb_rotation\n");
 513
 514         r = fb_mode_to_dss_mode(var, &mode);
 515         if (r)
 516                 return r;
 517
 518         bytespp = var->bits_per_pixel >> 3;
 519
 520         yuv_mode = mode == OMAP_DSS_COLOR_YUV2 || mode == OMAP_DSS_COLOR_UYVY;
 521
 522         /* We need to reconfigure VRFB if the resolution changes, if yuv mode
 523          * is enabled/disabled, or if bytes per pixel changes */
 524
 525         /* XXX we shouldn't allow this when framebuffer is mmapped */
 526
 527         reconf = false;
 528
 529         if (yuv_mode != vrfb->yuv_mode)
 530                 reconf = true;
 531         else if (bytespp != vrfb->bytespp)
 532                 reconf = true;
 533         else if (vrfb->xres != var->xres_virtual ||
 534                         vrfb->yres != var->yres_virtual)
 535                 reconf = true;
 536
 537         if (vrfb->vaddr[0] && reconf) {
 538                 fbi->screen_base = NULL;
 539                 fix->smem_start = 0;
 540                 fix->smem_len = 0;
 541                 iounmap(vrfb->vaddr[0]);
 542                 vrfb->vaddr[0] = NULL;
 543                 DBG("setup_vrfb_rotation: reset fb\n");
 544         }
 545
 546         if (vrfb->vaddr[0])
 547                 return 0;
 548
 549         omap_vrfb_setup(&rg->vrfb, rg->paddr,
 550                         var->xres_virtual,
 551                         var->yres_virtual,
 552                         bytespp, yuv_mode);
 553
 554         /* Now one can ioremap the 0 angle view */
 555         r = omap_vrfb_map_angle(vrfb, var->yres_virtual, 0);
 556         if (r)
 557                 return r;
 558
 559         /* used by open/write in fbmem.c */
 560         fbi->screen_base = ofbi->region.vrfb.vaddr[0];
 561
 562         fix->smem_start = ofbi->region.vrfb.paddr[0];
 563
 564         switch (var->nonstd) {
 565         case OMAPFB_COLOR_YUV422:
 566         case OMAPFB_COLOR_YUY422:
 567                 fix->line_length =
 568                         (OMAP_VRFB_LINE_LEN * var->bits_per_pixel) >> 2;
 569                 break;
 570         default:
 571                 fix->line_length =
 572                         (OMAP_VRFB_LINE_LEN * var->bits_per_pixel) >> 3;
 573                 break;
 574         }
 575
 576         fix->smem_len = var->yres_virtual * fix->line_length;
 577
 578         return 0;
 579 }
 580
 581 int dss_mode_to_fb_mode(enum omap_color_mode dssmode,
 582                         struct fb_var_screeninfo *var)
 583 {
 584         int i;
 585
 586         for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) {
 587                 struct omapfb_colormode *mode = &omapfb_colormodes[i];
 588                 if (dssmode == mode->dssmode) {
 589                         assign_colormode_to_var(var, mode);
 590                         return 0;
 591                 }
 592         }
 593         return -ENOENT;
 594 }
 595
 596 void set_fb_fix(struct fb_info *fbi)
 597 {
 598         struct fb_fix_screeninfo *fix = &fbi->fix;
 599         struct fb_var_screeninfo *var = &fbi->var;
 600         struct omapfb_info *ofbi = FB2OFB(fbi);
 601         struct omapfb2_mem_region *rg = &ofbi->region;
 602
 603         DBG("set_fb_fix\n");
 604
 605         /* used by open/write in fbmem.c */
 606         fbi->screen_base = (char __iomem *)omapfb_get_region_vaddr(ofbi);
 607
 608         /* used by mmap in fbmem.c */
 609         if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
 610                 switch (var->nonstd) {
 611                 case OMAPFB_COLOR_YUV422:
 612                 case OMAPFB_COLOR_YUY422:
 613                         fix->line_length =
 614                                 (OMAP_VRFB_LINE_LEN * var->bits_per_pixel) >> 2;
 615                         break;
 616                 default:
 617                         fix->line_length =
 618                                 (OMAP_VRFB_LINE_LEN * var->bits_per_pixel) >> 3;
 619                         break;
 620                 }
 621
 622                 fix->smem_len = var->yres_virtual * fix->line_length;
 623         } else {
 624                 fix->line_length =
 625                         (var->xres_virtual * var->bits_per_pixel) >> 3;
 626                 fix->smem_len = rg->size;
 627         }
 628
 629         fix->smem_start = omapfb_get_region_paddr(ofbi);
 630
 631         fix->type = FB_TYPE_PACKED_PIXELS;
 632
 633         if (var->nonstd)
 634                 fix->visual = FB_VISUAL_PSEUDOCOLOR;
 635         else {
 636                 switch (var->bits_per_pixel) {
 637                 case 32:
 638                 case 24:
 639                 case 16:
 640                 case 12:
 641                         fix->visual = FB_VISUAL_TRUECOLOR;
 642                         /* 12bpp is stored in 16 bits */
 643                         break;
 644                 case 1:
 645                 case 2:
 646                 case 4:
 647                 case 8:
 648                         fix->visual = FB_VISUAL_PSEUDOCOLOR;
 649                         break;
 650                 }
 651         }
 652
 653         fix->accel = FB_ACCEL_NONE;
 654
 655         fix->xpanstep = 1;
 656         fix->ypanstep = 1;
 657 }
 658
 659 /* check new var and possibly modify it to be ok */
 660 int check_fb_var(struct fb_info *fbi, struct fb_var_screeninfo *var)
 661 {
 662         struct omapfb_info *ofbi = FB2OFB(fbi);
 663         struct omap_dss_device *display = fb2display(fbi);
 664         enum omap_color_mode mode = 0;
 665         int i;
 666         int r;
 667
 668         DBG("check_fb_var %d\n", ofbi->id);
 669
 670         if (ofbi->region.size == 0)
 671                 return 0;
 672
 673         r = fb_mode_to_dss_mode(var, &mode);
 674         if (r) {
 675                 DBG("cannot convert var to omap dss mode\n");
 676                 return r;
 677         }
 678
 679         for (i = 0; i < ofbi->num_overlays; ++i) {
 680                 if ((ofbi->overlays[i]->supported_modes & mode) == 0) {
 681                         DBG("invalid mode\n");
 682                         return -EINVAL;
 683                 }
 684         }
 685
 686         if (var->rotate < 0 || var->rotate > 3)
 687                 return -EINVAL;
 688
 689         if (check_fb_res_bounds(var))
 690                 return -EINVAL;
 691
 692         if (check_fb_size(ofbi, var))
 693                 return -EINVAL;
 694
 695         if (var->xres + var->xoffset > var->xres_virtual)
 696                 var->xoffset = var->xres_virtual - var->xres;
 697         if (var->yres + var->yoffset > var->yres_virtual)
 698                 var->yoffset = var->yres_virtual - var->yres;
 699
 700         DBG("xres = %d, yres = %d, vxres = %d, vyres = %d\n",
 701                         var->xres, var->yres,
 702                         var->xres_virtual, var->yres_virtual);
 703
 704         var->height             = -1;
 705         var->width              = -1;
 706         var->grayscale          = 0;
 707
 708         if (display && display->driver->get_timings) {
 709                 struct omap_video_timings timings;
 710                 display->driver->get_timings(display, &timings);
 711
 712                 /* pixclock in ps, the rest in pixclock */
 713                 var->pixclock = timings.pixel_clock != 0 ?
 714                         KHZ2PICOS(timings.pixel_clock) :
 715                         0;
 716                 var->left_margin = timings.hfp;
 717                 var->right_margin = timings.hbp;
 718                 var->upper_margin = timings.vfp;
 719                 var->lower_margin = timings.vbp;
 720                 var->hsync_len = timings.hsw;
 721                 var->vsync_len = timings.vsw;
 722         } else {
 723                 var->pixclock = 0;
 724                 var->left_margin = 0;
 725                 var->right_margin = 0;
 726                 var->upper_margin = 0;
 727                 var->lower_margin = 0;
 728                 var->hsync_len = 0;
 729                 var->vsync_len = 0;
 730         }
 731
 732         /* TODO: get these from panel->config */
 733         var->vmode              = FB_VMODE_NONINTERLACED;
 734         var->sync               = 0;
 735
 736         return 0;
 737 }
 738
 739 /*
 740  * ---------------------------------------------------------------------------
 741  * fbdev framework callbacks
 742  * ---------------------------------------------------------------------------
 743  */
 744 static int omapfb_open(struct fb_info *fbi, int user)
 745 {
 746         return 0;
 747 }
 748
 749 static int omapfb_release(struct fb_info *fbi, int user)
 750 {
 751 #if 0
 752         struct omapfb_info *ofbi = FB2OFB(fbi);
 753         struct omapfb2_device *fbdev = ofbi->fbdev;
 754         struct omap_dss_device *display = fb2display(fbi);
 755
 756         DBG("Closing fb with plane index %d\n", ofbi->id);
 757
 758         omapfb_lock(fbdev);
 759
 760         if (display && display->get_update_mode && display->update) {
 761                 /* XXX this update should be removed, I think. But it's
 762                  * good for debugging */
 763                 if (display->get_update_mode(display) ==
 764                                 OMAP_DSS_UPDATE_MANUAL) {
 765                         u16 w, h;
 766
 767                         if (display->sync)
 768                                 display->sync(display);
 769
 770                         display->get_resolution(display, &w, &h);
 771                         display->update(display, 0, 0, w, h);
 772                 }
 773         }
 774
 775         if (display && display->sync)
 776                 display->sync(display);
 777
 778         omapfb_unlock(fbdev);
 779 #endif
 780         return 0;
 781 }
 782
 783 static unsigned calc_rotation_offset_dma(const struct fb_var_screeninfo *var,
 784                 const struct fb_fix_screeninfo *fix, int rotation)
 785 {
 786         unsigned offset;
 787
 788         offset = var->yoffset * fix->line_length +
 789                 var->xoffset * (var->bits_per_pixel >> 3);
 790
 791         return offset;
 792 }
 793
 794 static unsigned calc_rotation_offset_vrfb(const struct fb_var_screeninfo *var,
 795                 const struct fb_fix_screeninfo *fix, int rotation)
 796 {
 797         unsigned offset;
 798
 799         if (rotation == FB_ROTATE_UD)
 800                 offset = (var->yres_virtual - var->yres) *
 801                         fix->line_length;
 802         else if (rotation == FB_ROTATE_CW)
 803                 offset = (var->yres_virtual - var->yres) *
 804                         (var->bits_per_pixel >> 3);
 805         else
 806                 offset = 0;
 807
 808         if (rotation == FB_ROTATE_UR)
 809                 offset += var->yoffset * fix->line_length +
 810                         var->xoffset * (var->bits_per_pixel >> 3);
 811         else if (rotation == FB_ROTATE_UD)
 812                 offset -= var->yoffset * fix->line_length +
 813                         var->xoffset * (var->bits_per_pixel >> 3);
 814         else if (rotation == FB_ROTATE_CW)
 815                 offset -= var->xoffset * fix->line_length +
 816                         var->yoffset * (var->bits_per_pixel >> 3);
 817         else if (rotation == FB_ROTATE_CCW)
 818                 offset += var->xoffset * fix->line_length +
 819                         var->yoffset * (var->bits_per_pixel >> 3);
 820
 821         return offset;
 822 }
 823
 824
 825 /* setup overlay according to the fb */
 826 static int omapfb_setup_overlay(struct fb_info *fbi, struct omap_overlay *ovl,
 827                 u16 posx, u16 posy, u16 outw, u16 outh)
 828 {
 829         int r = 0;
 830         struct omapfb_info *ofbi = FB2OFB(fbi);
 831         struct fb_var_screeninfo *var = &fbi->var;
 832         struct fb_fix_screeninfo *fix = &fbi->fix;
 833         enum omap_color_mode mode = 0;
 834         int offset;
 835         u32 data_start_p;
 836         void __iomem *data_start_v;
 837         struct omap_overlay_info info;
 838         int xres, yres;
 839         int screen_width;
 840         int mirror;
 841         int rotation = var->rotate;
 842         int i;
 843
 844         for (i = 0; i < ofbi->num_overlays; i++) {
 845                 if (ovl != ofbi->overlays[i])
 846                         continue;
 847
 848                 rotation = (rotation + ofbi->rotation[i]) % 4;
 849                 break;
 850         }
 851
 852         DBG("setup_overlay %d, posx %d, posy %d, outw %d, outh %d\n", ofbi->id,
 853                         posx, posy, outw, outh);
 854
 855         if (rotation == FB_ROTATE_CW || rotation == FB_ROTATE_CCW) {
 856                 xres = var->yres;
 857                 yres = var->xres;
 858         } else {
 859                 xres = var->xres;
 860                 yres = var->yres;
 861         }
 862
 863
 864         if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
 865                 data_start_p = omapfb_get_region_rot_paddr(ofbi, rotation);
 866                 data_start_v = NULL;
 867         } else {
 868                 data_start_p = omapfb_get_region_paddr(ofbi);
 869                 data_start_v = omapfb_get_region_vaddr(ofbi);
 870         }
 871
 872         if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
 873                 offset = calc_rotation_offset_vrfb(var, fix, rotation);
 874         else
 875                 offset = calc_rotation_offset_dma(var, fix, rotation);
 876
 877         data_start_p += offset;
 878         data_start_v += offset;
 879
 880         if (offset)
 881                 DBG("offset %d, %d = %d\n",
 882                                 var->xoffset, var->yoffset, offset);
 883
 884         DBG("paddr %x, vaddr %p\n", data_start_p, data_start_v);
 885
 886         r = fb_mode_to_dss_mode(var, &mode);
 887         if (r) {
 888                 DBG("fb_mode_to_dss_mode failed");
 889                 goto err;
 890         }
 891
 892         switch (var->nonstd) {
 893         case OMAPFB_COLOR_YUV422:
 894         case OMAPFB_COLOR_YUY422:
 895                 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
 896                         screen_width = fix->line_length
 897                                 / (var->bits_per_pixel >> 2);
 898                         break;
 899                 }
 900         default:
 901                 screen_width = fix->line_length / (var->bits_per_pixel >> 3);
 902                 break;
 903         }
 904
 905         ovl->get_overlay_info(ovl, &info);
 906
 907         if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
 908                 mirror = 0;
 909         else
 910                 mirror = ofbi->mirror;
 911
 912         info.paddr = data_start_p;
 913         info.vaddr = data_start_v;
 914         info.screen_width = screen_width;
 915         info.width = xres;
 916         info.height = yres;
 917         info.color_mode = mode;
 918         info.rotation_type = ofbi->rotation_type;
 919         info.rotation = rotation;
 920         info.mirror = mirror;
 921
 922         info.pos_x = posx;
 923         info.pos_y = posy;
 924         info.out_width = outw;
 925         info.out_height = outh;
 926
 927         r = ovl->set_overlay_info(ovl, &info);
 928         if (r) {
 929                 DBG("ovl->setup_overlay_info failed\n");
 930                 goto err;
 931         }
 932
 933         return 0;
 934
 935 err:
 936         DBG("setup_overlay failed\n");
 937         return r;
 938 }
 939
 940 /* apply var to the overlay */
 941 int omapfb_apply_changes(struct fb_info *fbi, int init)
 942 {
 943         int r = 0;
 944         struct omapfb_info *ofbi = FB2OFB(fbi);
 945         struct fb_var_screeninfo *var = &fbi->var;
 946         struct omap_overlay *ovl;
 947         u16 posx, posy;
 948         u16 outw, outh;
 949         int i;
 950
 951 #ifdef DEBUG
 952         if (omapfb_test_pattern)
 953                 fill_fb(fbi);
 954 #endif
 955
 956         for (i = 0; i < ofbi->num_overlays; i++) {
 957                 ovl = ofbi->overlays[i];
 958
 959                 DBG("apply_changes, fb %d, ovl %d\n", ofbi->id, ovl->id);
 960
 961                 if (ofbi->region.size == 0) {
 962                         /* the fb is not available. disable the overlay */
 963                         omapfb_overlay_enable(ovl, 0);
 964                         if (!init && ovl->manager)
 965                                 ovl->manager->apply(ovl->manager);
 966                         continue;
 967                 }
 968
 969                 if (init || (ovl->caps & OMAP_DSS_OVL_CAP_SCALE) == 0) {
 970                         int rotation = (var->rotate + ofbi->rotation[i]) % 4;
 971                         if (rotation == FB_ROTATE_CW ||
 972                                         rotation == FB_ROTATE_CCW) {
 973                                 outw = var->yres;
 974                                 outh = var->xres;
 975                         } else {
 976                                 outw = var->xres;
 977                                 outh = var->yres;
 978                         }
 979                 } else {
 980                         outw = ovl->info.out_width;
 981                         outh = ovl->info.out_height;
 982                 }
 983
 984                 if (init) {
 985                         posx = 0;
 986                         posy = 0;
 987                 } else {
 988                         posx = ovl->info.pos_x;
 989                         posy = ovl->info.pos_y;
 990                 }
 991
 992                 r = omapfb_setup_overlay(fbi, ovl, posx, posy, outw, outh);
 993                 if (r)
 994                         goto err;
 995
 996                 if (!init && ovl->manager)
 997                         ovl->manager->apply(ovl->manager);
 998         }
 999         return 0;
1000 err:
1001         DBG("apply_changes failed\n");
1002         return r;
1003 }
1004
1005 /* checks var and eventually tweaks it to something supported,
1006  * DO NOT MODIFY PAR */
1007 static int omapfb_check_var(struct fb_var_screeninfo *var, struct fb_info *fbi)
1008 {
1009         int r;
1010
1011         DBG("check_var(%d)\n", FB2OFB(fbi)->id);
1012
1013         r = check_fb_var(fbi, var);
1014
1015         return r;
1016 }
1017
1018 /* set the video mode according to info->var */
1019 static int omapfb_set_par(struct fb_info *fbi)
1020 {
1021         int r;
1022
1023         DBG("set_par(%d)\n", FB2OFB(fbi)->id);
1024
1025         set_fb_fix(fbi);
1026
1027         r = setup_vrfb_rotation(fbi);
1028         if (r)
1029                 return r;
1030
1031         r = omapfb_apply_changes(fbi, 0);
1032
1033         return r;
1034 }
1035
1036 static int omapfb_pan_display(struct fb_var_screeninfo *var,
1037                 struct fb_info *fbi)
1038 {
1039         struct fb_var_screeninfo new_var;
1040         int r;
1041
1042         DBG("pan_display(%d)\n", FB2OFB(fbi)->id);
1043
1044         if (var->xoffset == fbi->var.xoffset &&
1045             var->yoffset == fbi->var.yoffset)
1046                 return 0;
1047
1048         new_var = fbi->var;
1049         new_var.xoffset = var->xoffset;
1050         new_var.yoffset = var->yoffset;
1051
1052         fbi->var = new_var;
1053
1054         r = omapfb_apply_changes(fbi, 0);
1055
1056         return r;
1057 }
1058
1059 static void mmap_user_open(struct vm_area_struct *vma)
1060 {
1061         struct omapfb_info *ofbi = (struct omapfb_info *)vma->vm_private_data;
1062
1063         atomic_inc(&ofbi->map_count);
1064 }
1065
1066 static void mmap_user_close(struct vm_area_struct *vma)
1067 {
1068         struct omapfb_info *ofbi = (struct omapfb_info *)vma->vm_private_data;
1069
1070         atomic_dec(&ofbi->map_count);
1071 }
1072
1073 static struct vm_operations_struct mmap_user_ops = {
1074         .open = mmap_user_open,
1075         .close = mmap_user_close,
1076 };
1077
1078 static int omapfb_mmap(struct fb_info *fbi, struct vm_area_struct *vma)
1079 {
1080         struct omapfb_info *ofbi = FB2OFB(fbi);
1081         struct fb_fix_screeninfo *fix = &fbi->fix;
1082         unsigned long off;
1083         unsigned long start;
1084         u32 len;
1085
1086         if (vma->vm_end - vma->vm_start == 0)
1087                 return 0;
1088         if (vma->vm_pgoff > (~0UL >> PAGE_SHIFT))
1089                 return -EINVAL;
1090         off = vma->vm_pgoff << PAGE_SHIFT;
1091
1092         start = omapfb_get_region_paddr(ofbi);
1093         len = fix->smem_len;
1094         if (off >= len)
1095                 return -EINVAL;
1096         if ((vma->vm_end - vma->vm_start + off) > len)
1097                 return -EINVAL;
1098
1099         off += start;
1100
1101         DBG("user mmap region start %lx, len %d, off %lx\n", start, len, off);
1102
1103         vma->vm_pgoff = off >> PAGE_SHIFT;
1104         vma->vm_flags |= VM_IO | VM_RESERVED;
1105         vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
1106         vma->vm_ops = &mmap_user_ops;
1107         vma->vm_private_data = ofbi;
1108         if (io_remap_pfn_range(vma, vma->vm_start, off >> PAGE_SHIFT,
1109                              vma->vm_end - vma->vm_start, vma->vm_page_prot))
1110                 return -EAGAIN;
1111         /* vm_ops.open won't be called for mmap itself. */
1112         atomic_inc(&ofbi->map_count);
1113         return 0;
1114 }
1115
1116 /* Store a single color palette entry into a pseudo palette or the hardware
1117  * palette if one is available. For now we support only 16bpp and thus store
1118  * the entry only to the pseudo palette.
1119  */
1120 static int _setcolreg(struct fb_info *fbi, u_int regno, u_int red, u_int green,
1121                 u_int blue, u_int transp, int update_hw_pal)
1122 {
1123         /*struct omapfb_info *ofbi = FB2OFB(fbi);*/
1124         /*struct omapfb2_device *fbdev = ofbi->fbdev;*/
1125         struct fb_var_screeninfo *var = &fbi->var;
1126         int r = 0;
1127
1128         enum omapfb_color_format mode = OMAPFB_COLOR_RGB24U; /* XXX */
1129
1130         /*switch (plane->color_mode) {*/
1131         switch (mode) {
1132         case OMAPFB_COLOR_YUV422:
1133         case OMAPFB_COLOR_YUV420:
1134         case OMAPFB_COLOR_YUY422:
1135                 r = -EINVAL;
1136                 break;
1137         case OMAPFB_COLOR_CLUT_8BPP:
1138         case OMAPFB_COLOR_CLUT_4BPP:
1139         case OMAPFB_COLOR_CLUT_2BPP:
1140         case OMAPFB_COLOR_CLUT_1BPP:
1141                 /*
1142                    if (fbdev->ctrl->setcolreg)
1143                    r = fbdev->ctrl->setcolreg(regno, red, green, blue,
1144                    transp, update_hw_pal);
1145                    */
1146                 /* Fallthrough */
1147                 r = -EINVAL;
1148                 break;
1149         case OMAPFB_COLOR_RGB565:
1150         case OMAPFB_COLOR_RGB444:
1151         case OMAPFB_COLOR_RGB24P:
1152         case OMAPFB_COLOR_RGB24U:
1153                 if (r != 0)
1154                         break;
1155
1156                 if (regno < 0) {
1157                         r = -EINVAL;
1158                         break;
1159                 }
1160
1161                 if (regno < 16) {
1162                         u16 pal;
1163                         pal = ((red >> (16 - var->red.length)) <<
1164                                         var->red.offset) |
1165                                 ((green >> (16 - var->green.length)) <<
1166                                  var->green.offset) |
1167                                 (blue >> (16 - var->blue.length));
1168                         ((u32 *)(fbi->pseudo_palette))[regno] = pal;
1169                 }
1170                 break;
1171         default:
1172                 BUG();
1173         }
1174         return r;
1175 }
1176
1177 static int omapfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
1178                 u_int transp, struct fb_info *info)
1179 {
1180         DBG("setcolreg\n");
1181
1182         return _setcolreg(info, regno, red, green, blue, transp, 1);
1183 }
1184
1185 static int omapfb_setcmap(struct fb_cmap *cmap, struct fb_info *info)
1186 {
1187         int count, index, r;
1188         u16 *red, *green, *blue, *transp;
1189         u16 trans = 0xffff;
1190
1191         DBG("setcmap\n");
1192
1193         red     = cmap->red;
1194         green   = cmap->green;
1195         blue    = cmap->blue;
1196         transp  = cmap->transp;
1197         index   = cmap->start;
1198
1199         for (count = 0; count < cmap->len; count++) {
1200                 if (transp)
1201                         trans = *transp++;
1202                 r = _setcolreg(info, index++, *red++, *green++, *blue++, trans,
1203                                 count == cmap->len - 1);
1204                 if (r != 0)
1205                         return r;
1206         }
1207
1208         return 0;
1209 }
1210
1211 static int omapfb_blank(int blank, struct fb_info *fbi)
1212 {
1213         struct omapfb_info *ofbi = FB2OFB(fbi);
1214         struct omapfb2_device *fbdev = ofbi->fbdev;
1215         struct omap_dss_device *display = fb2display(fbi);
1216         int do_update = 0;
1217         int r = 0;
1218
1219         omapfb_lock(fbdev);
1220
1221         switch (blank) {
1222         case FB_BLANK_UNBLANK:
1223                 if (display->state != OMAP_DSS_DISPLAY_SUSPENDED)
1224                         goto exit;
1225
1226                 if (display->driver->resume)
1227                         r = display->driver->resume(display);
1228
1229                 if (r == 0 && display->driver->get_update_mode &&
1230                                 display->driver->get_update_mode(display) ==
1231                                 OMAP_DSS_UPDATE_MANUAL)
1232                         do_update = 1;
1233
1234                 break;
1235
1236         case FB_BLANK_NORMAL:
1237                 /* FB_BLANK_NORMAL could be implemented.
1238                  * Needs DSS additions. */
1239         case FB_BLANK_VSYNC_SUSPEND:
1240         case FB_BLANK_HSYNC_SUSPEND:
1241         case FB_BLANK_POWERDOWN:
1242                 if (display->state != OMAP_DSS_DISPLAY_ACTIVE)
1243                         goto exit;
1244
1245                 if (display->driver->suspend)
1246                         r = display->driver->suspend(display);
1247
1248                 break;
1249
1250         default:
1251                 r = -EINVAL;
1252         }
1253
1254 exit:
1255         omapfb_unlock(fbdev);
1256
1257         if (r == 0 && do_update && display->driver->update) {
1258                 u16 w, h;
1259                 display->driver->get_resolution(display, &w, &h);
1260
1261                 r = display->driver->update(display, 0, 0, w, h);
1262         }
1263
1264         return r;
1265 }
1266
1267 #if 0
1268 /* XXX fb_read and fb_write are needed for VRFB */
1269 ssize_t omapfb_write(struct fb_info *info, const char __user *buf,
1270                 size_t count, loff_t *ppos)
1271 {
1272         DBG("omapfb_write %d, %lu\n", count, (unsigned long)*ppos);
1273         /* XXX needed for VRFB */
1274         return count;
1275 }
1276 #endif
1277
1278 static struct fb_ops omapfb_ops = {
1279         .owner          = THIS_MODULE,
1280         .fb_open        = omapfb_open,
1281         .fb_release     = omapfb_release,
1282         .fb_fillrect    = cfb_fillrect,
1283         .fb_copyarea    = cfb_copyarea,
1284         .fb_imageblit   = cfb_imageblit,
1285         .fb_blank       = omapfb_blank,
1286         .fb_ioctl       = omapfb_ioctl,
1287         .fb_check_var   = omapfb_check_var,
1288         .fb_set_par     = omapfb_set_par,
1289         .fb_pan_display = omapfb_pan_display,
1290         .fb_mmap        = omapfb_mmap,
1291         .fb_setcolreg   = omapfb_setcolreg,
1292         .fb_setcmap     = omapfb_setcmap,
1293         /*.fb_write     = omapfb_write,*/
1294 };
1295
1296 static void omapfb_free_fbmem(struct fb_info *fbi)
1297 {
1298         struct omapfb_info *ofbi = FB2OFB(fbi);
1299         struct omapfb2_device *fbdev = ofbi->fbdev;
1300         struct omapfb2_mem_region *rg;
1301
1302         rg = &ofbi->region;
1303
1304         if (rg->paddr)
1305                 if (omap_vram_free(rg->paddr, rg->size))
1306                         dev_err(fbdev->dev, "VRAM FREE failed\n");
1307
1308         if (rg->vaddr)
1309                 iounmap(rg->vaddr);
1310
1311         if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
1312                 /* unmap the 0 angle rotation */
1313                 if (rg->vrfb.vaddr[0]) {
1314                         iounmap(rg->vrfb.vaddr[0]);
1315                         omap_vrfb_release_ctx(&rg->vrfb);
1316                         rg->vrfb.vaddr[0] = NULL;
1317                 }
1318         }
1319
1320         rg->vaddr = NULL;
1321         rg->paddr = 0;
1322         rg->alloc = 0;
1323         rg->size = 0;
1324 }
1325
1326 static void clear_fb_info(struct fb_info *fbi)
1327 {
1328         memset(&fbi->var, 0, sizeof(fbi->var));
1329         memset(&fbi->fix, 0, sizeof(fbi->fix));
1330         strlcpy(fbi->fix.id, MODULE_NAME, sizeof(fbi->fix.id));
1331 }
1332
1333 static int omapfb_free_all_fbmem(struct omapfb2_device *fbdev)
1334 {
1335         int i;
1336
1337         DBG("free all fbmem\n");
1338
1339         for (i = 0; i < fbdev->num_fbs; i++) {
1340                 struct fb_info *fbi = fbdev->fbs[i];
1341                 omapfb_free_fbmem(fbi);
1342                 clear_fb_info(fbi);
1343         }
1344
1345         return 0;
1346 }
1347
1348 static int omapfb_alloc_fbmem(struct fb_info *fbi, unsigned long size,
1349                 unsigned long paddr)
1350 {
1351         struct omapfb_info *ofbi = FB2OFB(fbi);
1352         struct omapfb2_device *fbdev = ofbi->fbdev;
1353         struct omapfb2_mem_region *rg;
1354         void __iomem *vaddr;
1355         int r;
1356
1357         rg = &ofbi->region;
1358         memset(rg, 0, sizeof(*rg));
1359
1360         size = PAGE_ALIGN(size);
1361
1362         if (!paddr) {
1363                 DBG("allocating %lu bytes for fb %d\n", size, ofbi->id);
1364                 r = omap_vram_alloc(OMAP_VRAM_MEMTYPE_SDRAM, size, &paddr);
1365         } else {
1366                 DBG("reserving %lu bytes at %lx for fb %d\n", size, paddr,
1367                                 ofbi->id);
1368                 r = omap_vram_reserve(paddr, size);
1369         }
1370
1371         if (r) {
1372                 dev_err(fbdev->dev, "failed to allocate framebuffer\n");
1373                 return -ENOMEM;
1374         }
1375
1376         if (ofbi->rotation_type != OMAP_DSS_ROT_VRFB) {
1377                 vaddr = ioremap_wc(paddr, size);
1378
1379                 if (!vaddr) {
1380                         dev_err(fbdev->dev, "failed to ioremap framebuffer\n");
1381                         omap_vram_free(paddr, size);
1382                         return -ENOMEM;
1383                 }
1384
1385                 DBG("allocated VRAM paddr %lx, vaddr %p\n", paddr, vaddr);
1386         } else {
1387                 r = omap_vrfb_request_ctx(&rg->vrfb);
1388                 if (r) {
1389                         dev_err(fbdev->dev, "vrfb create ctx failed\n");
1390                         return r;
1391                 }
1392
1393                 vaddr = NULL;
1394         }
1395
1396         rg->paddr = paddr;
1397         rg->vaddr = vaddr;
1398         rg->size = size;
1399         rg->alloc = 1;
1400
1401         return 0;
1402 }
1403
1404 /* allocate fbmem using display resolution as reference */
1405 static int omapfb_alloc_fbmem_display(struct fb_info *fbi, unsigned long size,
1406                 unsigned long paddr)
1407 {
1408         struct omapfb_info *ofbi = FB2OFB(fbi);
1409         struct omapfb2_device *fbdev = ofbi->fbdev;
1410         struct omap_dss_device *display;
1411         int bytespp;
1412
1413         display =  fb2display(fbi);
1414
1415         if (!display)
1416                 return 0;
1417
1418         switch (omapfb_get_recommended_bpp(fbdev, display)) {
1419         case 16:
1420                 bytespp = 2;
1421                 break;
1422         case 24:
1423                 bytespp = 4;
1424                 break;
1425         default:
1426                 bytespp = 4;
1427                 break;
1428         }
1429
1430         if (!size) {
1431                 u16 w, h;
1432
1433                 display->driver->get_resolution(display, &w, &h);
1434
1435                 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
1436                         size = max(omap_vrfb_min_phys_size(w, h, bytespp),
1437                                         omap_vrfb_min_phys_size(h, w, bytespp));
1438
1439                         DBG("adjusting fb mem size for VRFB, %u -> %lu\n",
1440                                         w * h * bytespp, size);
1441                 } else {
1442                         size = w * h * bytespp;
1443                 }
1444         }
1445
1446         if (!size)
1447                 return 0;
1448
1449         return omapfb_alloc_fbmem(fbi, size, paddr);
1450 }
1451
1452 static enum omap_color_mode fb_format_to_dss_mode(enum omapfb_color_format fmt)
1453 {
1454         enum omap_color_mode mode;
1455
1456         switch (fmt) {
1457         case OMAPFB_COLOR_RGB565:
1458                 mode = OMAP_DSS_COLOR_RGB16;
1459                 break;
1460         case OMAPFB_COLOR_YUV422:
1461                 mode = OMAP_DSS_COLOR_YUV2;
1462                 break;
1463         case OMAPFB_COLOR_CLUT_8BPP:
1464                 mode = OMAP_DSS_COLOR_CLUT8;
1465                 break;
1466         case OMAPFB_COLOR_CLUT_4BPP:
1467                 mode = OMAP_DSS_COLOR_CLUT4;
1468                 break;
1469         case OMAPFB_COLOR_CLUT_2BPP:
1470                 mode = OMAP_DSS_COLOR_CLUT2;
1471                 break;
1472         case OMAPFB_COLOR_CLUT_1BPP:
1473                 mode = OMAP_DSS_COLOR_CLUT1;
1474                 break;
1475         case OMAPFB_COLOR_RGB444:
1476                 mode = OMAP_DSS_COLOR_RGB12U;
1477                 break;
1478         case OMAPFB_COLOR_YUY422:
1479                 mode = OMAP_DSS_COLOR_UYVY;
1480                 break;
1481         case OMAPFB_COLOR_ARGB16:
1482                 mode = OMAP_DSS_COLOR_ARGB16;
1483                 break;
1484         case OMAPFB_COLOR_RGB24U:
1485                 mode = OMAP_DSS_COLOR_RGB24U;
1486                 break;
1487         case OMAPFB_COLOR_RGB24P:
1488                 mode = OMAP_DSS_COLOR_RGB24P;
1489                 break;
1490         case OMAPFB_COLOR_ARGB32:
1491                 mode = OMAP_DSS_COLOR_ARGB32;
1492                 break;
1493         case OMAPFB_COLOR_RGBA32:
1494                 mode = OMAP_DSS_COLOR_RGBA32;
1495                 break;
1496         case OMAPFB_COLOR_RGBX32:
1497                 mode = OMAP_DSS_COLOR_RGBX32;
1498                 break;
1499         default:
1500                 mode = -EINVAL;
1501         }
1502
1503         return mode;
1504 }
1505
1506 static int omapfb_parse_vram_param(const char *param, int max_entries,
1507                 unsigned long *sizes, unsigned long *paddrs)
1508 {
1509         int fbnum;
1510         unsigned long size;
1511         unsigned long paddr = 0;
1512         char *p, *start;
1513
1514         start = (char *)param;
1515
1516         while (1) {
1517                 p = start;
1518
1519                 fbnum = simple_strtoul(p, &p, 10);
1520
1521                 if (p == param)
1522                         return -EINVAL;
1523
1524                 if (*p != ':')
1525                         return -EINVAL;
1526
1527                 if (fbnum >= max_entries)
1528                         return -EINVAL;
1529
1530                 size = memparse(p + 1, &p);
1531
1532                 if (!size)
1533                         return -EINVAL;
1534
1535                 paddr = 0;
1536
1537                 if (*p == '@') {
1538                         paddr = simple_strtoul(p + 1, &p, 16);
1539
1540                         if (!paddr)
1541                                 return -EINVAL;
1542
1543                 }
1544
1545                 paddrs[fbnum] = paddr;
1546                 sizes[fbnum] = size;
1547
1548                 if (*p == 0)
1549                         break;
1550
1551                 if (*p != ',')
1552                         return -EINVAL;
1553
1554                 ++p;
1555
1556                 start = p;
1557         }
1558
1559         return 0;
1560 }
1561
1562 static int omapfb_allocate_all_fbs(struct omapfb2_device *fbdev)
1563 {
1564         int i, r;
1565         unsigned long vram_sizes[10];
1566         unsigned long vram_paddrs[10];
1567
1568         memset(&vram_sizes, 0, sizeof(vram_sizes));
1569         memset(&vram_paddrs, 0, sizeof(vram_paddrs));
1570
1571         if (def_vram && omapfb_parse_vram_param(def_vram, 10,
1572                                 vram_sizes, vram_paddrs)) {
1573                 dev_err(fbdev->dev, "failed to parse vram parameter\n");
1574
1575                 memset(&vram_sizes, 0, sizeof(vram_sizes));
1576                 memset(&vram_paddrs, 0, sizeof(vram_paddrs));
1577         }
1578
1579         if (fbdev->dev->platform_data) {
1580                 struct omapfb_platform_data *opd;
1581                 opd = fbdev->dev->platform_data;
1582                 for (i = 0; i < opd->mem_desc.region_cnt; ++i) {
1583                         if (!vram_sizes[i]) {
1584                                 unsigned long size;
1585                                 unsigned long paddr;
1586
1587                                 size = opd->mem_desc.region[i].size;
1588                                 paddr = opd->mem_desc.region[i].paddr;
1589
1590                                 vram_sizes[i] = size;
1591                                 vram_paddrs[i] = paddr;
1592                         }
1593                 }
1594         }
1595
1596         for (i = 0; i < fbdev->num_fbs; i++) {
1597                 /* allocate memory automatically only for fb0, or if
1598                  * excplicitly defined with vram or plat data option */
1599                 if (i == 0 || vram_sizes[i] != 0) {
1600                         r = omapfb_alloc_fbmem_display(fbdev->fbs[i],
1601                                         vram_sizes[i], vram_paddrs[i]);
1602
1603                         if (r)
1604                                 return r;
1605                 }
1606         }
1607
1608         for (i = 0; i < fbdev->num_fbs; i++) {
1609                 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[i]);
1610                 struct omapfb2_mem_region *rg;
1611                 rg = &ofbi->region;
1612
1613                 DBG("region%d phys %08x virt %p size=%lu\n",
1614                                 i,
1615                                 rg->paddr,
1616                                 rg->vaddr,
1617                                 rg->size);
1618         }
1619
1620         return 0;
1621 }
1622
1623 int omapfb_realloc_fbmem(struct fb_info *fbi, unsigned long size, int type)
1624 {
1625         struct omapfb_info *ofbi = FB2OFB(fbi);
1626         struct omapfb2_device *fbdev = ofbi->fbdev;
1627         struct omap_dss_device *display = fb2display(fbi);
1628         struct omapfb2_mem_region *rg = &ofbi->region;
1629         unsigned long old_size = rg->size;
1630         unsigned long old_paddr = rg->paddr;
1631         int old_type = rg->type;
1632         int r;
1633
1634         if (type > OMAPFB_MEMTYPE_MAX)
1635                 return -EINVAL;
1636
1637         size = PAGE_ALIGN(size);
1638
1639         if (old_size == size && old_type == type)
1640                 return 0;
1641
1642         if (display && display->driver->sync)
1643                         display->driver->sync(display);
1644
1645         omapfb_free_fbmem(fbi);
1646
1647         if (size == 0) {
1648                 clear_fb_info(fbi);
1649                 return 0;
1650         }
1651
1652         r = omapfb_alloc_fbmem(fbi, size, 0);
1653
1654         if (r) {
1655                 if (old_size)
1656                         omapfb_alloc_fbmem(fbi, old_size, old_paddr);
1657
1658                 if (rg->size == 0)
1659                         clear_fb_info(fbi);
1660
1661                 return r;
1662         }
1663
1664         if (old_size == size)
1665                 return 0;
1666
1667         if (old_size == 0) {
1668                 DBG("initializing fb %d\n", ofbi->id);
1669                 r = omapfb_fb_init(fbdev, fbi);
1670                 if (r) {
1671                         DBG("omapfb_fb_init failed\n");
1672                         goto err;
1673                 }
1674                 r = omapfb_apply_changes(fbi, 1);
1675                 if (r) {
1676                         DBG("omapfb_apply_changes failed\n");
1677                         goto err;
1678                 }
1679         } else {
1680                 struct fb_var_screeninfo new_var;
1681                 memcpy(&new_var, &fbi->var, sizeof(new_var));
1682                 r = check_fb_var(fbi, &new_var);
1683                 if (r)
1684                         goto err;
1685                 memcpy(&fbi->var, &new_var, sizeof(fbi->var));
1686                 set_fb_fix(fbi);
1687                 r = setup_vrfb_rotation(fbi);
1688                 if (r)
1689                         goto err;
1690         }
1691
1692         return 0;
1693 err:
1694         omapfb_free_fbmem(fbi);
1695         clear_fb_info(fbi);
1696         return r;
1697 }
1698
1699 /* initialize fb_info, var, fix to something sane based on the display */
1700 static int omapfb_fb_init(struct omapfb2_device *fbdev, struct fb_info *fbi)
1701 {
1702         struct fb_var_screeninfo *var = &fbi->var;
1703         struct omap_dss_device *display = fb2display(fbi);
1704         struct omapfb_info *ofbi = FB2OFB(fbi);
1705         int r = 0;
1706
1707         fbi->fbops = &omapfb_ops;
1708         fbi->flags = FBINFO_FLAG_DEFAULT;
1709         fbi->pseudo_palette = fbdev->pseudo_palette;
1710
1711         if (ofbi->region.size == 0) {
1712                 clear_fb_info(fbi);
1713                 return 0;
1714         }
1715
1716         var->nonstd = 0;
1717         var->bits_per_pixel = 0;
1718
1719         var->rotate = def_rotate;
1720
1721         /*
1722          * Check if there is a default color format set in the board file,
1723          * and use this format instead the default deducted from the
1724          * display bpp.
1725          */
1726         if (fbdev->dev->platform_data) {
1727                 struct omapfb_platform_data *opd;
1728                 int id = ofbi->id;
1729
1730                 opd = fbdev->dev->platform_data;
1731                 if (opd->mem_desc.region[id].format_used) {
1732                         enum omap_color_mode mode;
1733                         enum omapfb_color_format format;
1734
1735                         format = opd->mem_desc.region[id].format;
1736                         mode = fb_format_to_dss_mode(format);
1737                         if (mode < 0) {
1738                                 r = mode;
1739                                 goto err;
1740                         }
1741                         r = dss_mode_to_fb_mode(mode, var);
1742                         if (r < 0)
1743                                 goto err;
1744                 }
1745         }
1746
1747         if (display) {
1748                 u16 w, h;
1749                 int rotation = (var->rotate + ofbi->rotation[0]) % 4;
1750
1751                 display->driver->get_resolution(display, &w, &h);
1752
1753                 if (rotation == FB_ROTATE_CW ||
1754                                 rotation == FB_ROTATE_CCW) {
1755                         var->xres = h;
1756                         var->yres = w;
1757                 } else {
1758                         var->xres = w;
1759                         var->yres = h;
1760                 }
1761
1762                 var->xres_virtual = var->xres;
1763                 var->yres_virtual = var->yres;
1764
1765                 if (!var->bits_per_pixel) {
1766                         switch (omapfb_get_recommended_bpp(fbdev, display)) {
1767                         case 16:
1768                                 var->bits_per_pixel = 16;
1769                                 break;
1770                         case 24:
1771                                 var->bits_per_pixel = 32;
1772                                 break;
1773                         default:
1774                                 dev_err(fbdev->dev, "illegal display "
1775                                                 "bpp\n");
1776                                 return -EINVAL;
1777                         }
1778                 }
1779         } else {
1780                 /* if there's no display, let's just guess some basic values */
1781                 var->xres = 320;
1782                 var->yres = 240;
1783                 var->xres_virtual = var->xres;
1784                 var->yres_virtual = var->yres;
1785                 if (!var->bits_per_pixel)
1786                         var->bits_per_pixel = 16;
1787         }
1788
1789         r = check_fb_var(fbi, var);
1790         if (r)
1791                 goto err;
1792
1793         set_fb_fix(fbi);
1794         r = setup_vrfb_rotation(fbi);
1795         if (r)
1796                 goto err;
1797
1798         r = fb_alloc_cmap(&fbi->cmap, 256, 0);
1799         if (r)
1800                 dev_err(fbdev->dev, "unable to allocate color map memory\n");
1801
1802 err:
1803         return r;
1804 }
1805
1806 static void fbinfo_cleanup(struct omapfb2_device *fbdev, struct fb_info *fbi)
1807 {
1808         fb_dealloc_cmap(&fbi->cmap);
1809 }
1810
1811
1812 static void omapfb_free_resources(struct omapfb2_device *fbdev)
1813 {
1814         int i;
1815
1816         DBG("free_resources\n");
1817
1818         if (fbdev == NULL)
1819                 return;
1820
1821         for (i = 0; i < fbdev->num_fbs; i++)
1822                 unregister_framebuffer(fbdev->fbs[i]);
1823
1824         /* free the reserved fbmem */
1825         omapfb_free_all_fbmem(fbdev);
1826
1827         for (i = 0; i < fbdev->num_fbs; i++) {
1828                 fbinfo_cleanup(fbdev, fbdev->fbs[i]);
1829                 framebuffer_release(fbdev->fbs[i]);
1830         }
1831
1832         for (i = 0; i < fbdev->num_displays; i++) {
1833                 if (fbdev->displays[i]->state != OMAP_DSS_DISPLAY_DISABLED)
1834                         fbdev->displays[i]->driver->disable(fbdev->displays[i]);
1835
1836                 omap_dss_put_device(fbdev->displays[i]);
1837         }
1838
1839         dev_set_drvdata(fbdev->dev, NULL);
1840         kfree(fbdev);
1841 }
1842
1843 static int omapfb_create_framebuffers(struct omapfb2_device *fbdev)
1844 {
1845         int r, i;
1846
1847         fbdev->num_fbs = 0;
1848
1849         DBG("create %d framebuffers\n", CONFIG_FB_OMAP2_NUM_FBS);
1850
1851         /* allocate fb_infos */
1852         for (i = 0; i < CONFIG_FB_OMAP2_NUM_FBS; i++) {
1853                 struct fb_info *fbi;
1854                 struct omapfb_info *ofbi;
1855
1856                 fbi = framebuffer_alloc(sizeof(struct omapfb_info),
1857                                 fbdev->dev);
1858
1859                 if (fbi == NULL) {
1860                         dev_err(fbdev->dev,
1861                                 "unable to allocate memory for plane info\n");
1862                         return -ENOMEM;
1863                 }
1864
1865                 clear_fb_info(fbi);
1866
1867                 fbdev->fbs[i] = fbi;
1868
1869                 ofbi = FB2OFB(fbi);
1870                 ofbi->fbdev = fbdev;
1871                 ofbi->id = i;
1872
1873                 /* assign these early, so that fb alloc can use them */
1874                 ofbi->rotation_type = def_vrfb ? OMAP_DSS_ROT_VRFB :
1875                         OMAP_DSS_ROT_DMA;
1876                 ofbi->mirror = def_mirror;
1877
1878                 fbdev->num_fbs++;
1879         }
1880
1881         DBG("fb_infos allocated\n");
1882
1883         /* assign overlays for the fbs */
1884         for (i = 0; i < min(fbdev->num_fbs, fbdev->num_overlays); i++) {
1885                 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[i]);
1886
1887                 ofbi->overlays[0] = fbdev->overlays[i];
1888                 ofbi->num_overlays = 1;
1889         }
1890
1891         /* allocate fb memories */
1892         r = omapfb_allocate_all_fbs(fbdev);
1893         if (r) {
1894                 dev_err(fbdev->dev, "failed to allocate fbmem\n");
1895                 return r;
1896         }
1897
1898         DBG("fbmems allocated\n");
1899
1900         /* setup fb_infos */
1901         for (i = 0; i < fbdev->num_fbs; i++) {
1902                 r = omapfb_fb_init(fbdev, fbdev->fbs[i]);
1903                 if (r) {
1904                         dev_err(fbdev->dev, "failed to setup fb_info\n");
1905                         return r;
1906                 }
1907         }
1908
1909         DBG("fb_infos initialized\n");
1910
1911         for (i = 0; i < fbdev->num_fbs; i++) {
1912                 r = register_framebuffer(fbdev->fbs[i]);
1913                 if (r != 0) {
1914                         dev_err(fbdev->dev,
1915                                 "registering framebuffer %d failed\n", i);
1916                         return r;
1917                 }
1918         }
1919
1920         DBG("framebuffers registered\n");
1921
1922         for (i = 0; i < fbdev->num_fbs; i++) {
1923                 r = omapfb_apply_changes(fbdev->fbs[i], 1);
1924                 if (r) {
1925                         dev_err(fbdev->dev, "failed to change mode\n");
1926                         return r;
1927                 }
1928         }
1929
1930         DBG("create sysfs for fbs\n");
1931         r = omapfb_create_sysfs(fbdev);
1932         if (r) {
1933                 dev_err(fbdev->dev, "failed to create sysfs entries\n");
1934                 return r;
1935         }
1936
1937         /* Enable fb0 */
1938         if (fbdev->num_fbs > 0) {
1939                 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[0]);
1940
1941                 if (ofbi->num_overlays > 0) {
1942                         struct omap_overlay *ovl = ofbi->overlays[0];
1943
1944                         r = omapfb_overlay_enable(ovl, 1);
1945
1946                         if (r) {
1947                                 dev_err(fbdev->dev,
1948                                                 "failed to enable overlay\n");
1949                                 return r;
1950                         }
1951                 }
1952         }
1953
1954         DBG("create_framebuffers done\n");
1955
1956         return 0;
1957 }
1958
1959 static int omapfb_mode_to_timings(const char *mode_str,
1960                 struct omap_video_timings *timings, u8 *bpp)
1961 {
1962         struct fb_info fbi;
1963         struct fb_var_screeninfo var;
1964         struct fb_ops fbops;
1965         int r;
1966
1967 #ifdef CONFIG_OMAP2_DSS_VENC
1968         if (strcmp(mode_str, "pal") == 0) {
1969                 *timings = omap_dss_pal_timings;
1970                 *bpp = 0;
1971                 return 0;
1972         } else if (strcmp(mode_str, "ntsc") == 0) {
1973                 *timings = omap_dss_ntsc_timings;
1974                 *bpp = 0;
1975                 return 0;
1976         }
1977 #endif
1978
1979         /* this is quite a hack, but I wanted to use the modedb and for
1980          * that we need fb_info and var, so we create dummy ones */
1981
1982         memset(&fbi, 0, sizeof(fbi));
1983         memset(&var, 0, sizeof(var));
1984         memset(&fbops, 0, sizeof(fbops));
1985         fbi.fbops = &fbops;
1986
1987         r = fb_find_mode(&var, &fbi, mode_str, NULL, 0, NULL, 24);
1988
1989         if (r != 0) {
1990                 timings->pixel_clock = PICOS2KHZ(var.pixclock);
1991                 timings->hfp = var.left_margin;
1992                 timings->hbp = var.right_margin;
1993                 timings->vfp = var.upper_margin;
1994                 timings->vbp = var.lower_margin;
1995                 timings->hsw = var.hsync_len;
1996                 timings->vsw = var.vsync_len;
1997                 timings->x_res = var.xres;
1998                 timings->y_res = var.yres;
1999
2000                 switch (var.bits_per_pixel) {
2001                 case 16:
2002                         *bpp = 16;
2003                         break;
2004                 case 24:
2005                 case 32:
2006                 default:
2007                         *bpp = 24;
2008                         break;
2009                 }
2010
2011                 return 0;
2012         } else {
2013                 return -EINVAL;
2014         }
2015 }
2016
2017 static int omapfb_set_def_mode(struct omapfb2_device *fbdev,
2018                 struct omap_dss_device *display, char *mode_str)
2019 {
2020         int r;
2021         u8 bpp;
2022         struct omap_video_timings timings;
2023
2024         r = omapfb_mode_to_timings(mode_str, &timings, &bpp);
2025         if (r)
2026                 return r;
2027
2028         fbdev->bpp_overrides[fbdev->num_bpp_overrides].dssdev = display;
2029         fbdev->bpp_overrides[fbdev->num_bpp_overrides].bpp = bpp;
2030         ++fbdev->num_bpp_overrides;
2031
2032         if (!display->driver->check_timings || !display->driver->set_timings)
2033                 return -EINVAL;
2034
2035         r = display->driver->check_timings(display, &timings);
2036         if (r)
2037                 return r;
2038
2039         display->driver->set_timings(display, &timings);
2040
2041         return 0;
2042 }
2043
2044 static int omapfb_get_recommended_bpp(struct omapfb2_device *fbdev,
2045                 struct omap_dss_device *dssdev)
2046 {
2047         int i;
2048
2049         BUG_ON(dssdev->driver->get_recommended_bpp == NULL);
2050
2051         for (i = 0; i < fbdev->num_bpp_overrides; ++i) {
2052                 if (dssdev == fbdev->bpp_overrides[i].dssdev)
2053                         return fbdev->bpp_overrides[i].bpp;
2054         }
2055
2056         return dssdev->driver->get_recommended_bpp(dssdev);
2057 }
2058
2059 static int omapfb_parse_def_modes(struct omapfb2_device *fbdev)
2060 {
2061         char *str, *options, *this_opt;
2062         int r = 0;
2063
2064         str = kmalloc(strlen(def_mode) + 1, GFP_KERNEL);
2065         strcpy(str, def_mode);
2066         options = str;
2067
2068         while (!r && (this_opt = strsep(&options, ",")) != NULL) {
2069                 char *p, *display_str, *mode_str;
2070                 struct omap_dss_device *display;
2071                 int i;
2072
2073                 p = strchr(this_opt, ':');
2074                 if (!p) {
2075                         r = -EINVAL;
2076                         break;
2077                 }
2078
2079                 *p = 0;
2080                 display_str = this_opt;
2081                 mode_str = p + 1;
2082
2083                 display = NULL;
2084                 for (i = 0; i < fbdev->num_displays; ++i) {
2085                         if (strcmp(fbdev->displays[i]->name,
2086                                                 display_str) == 0) {
2087                                 display = fbdev->displays[i];
2088                                 break;
2089                         }
2090                 }
2091
2092                 if (!display) {
2093                         r = -EINVAL;
2094                         break;
2095                 }
2096
2097                 r = omapfb_set_def_mode(fbdev, display, mode_str);
2098                 if (r)
2099                         break;
2100         }
2101
2102         kfree(str);
2103
2104         return r;
2105 }
2106
2107 static int omapfb_probe(struct platform_device *pdev)
2108 {
2109         struct omapfb2_device *fbdev = NULL;
2110         int r = 0;
2111         int i;
2112         struct omap_overlay *ovl;
2113         struct omap_dss_device *def_display;
2114         struct omap_dss_device *dssdev;
2115
2116         DBG("omapfb_probe\n");
2117
2118         if (pdev->num_resources != 0) {
2119                 dev_err(&pdev->dev, "probed for an unknown device\n");
2120                 r = -ENODEV;
2121                 goto err0;
2122         }
2123
2124         fbdev = kzalloc(sizeof(struct omapfb2_device), GFP_KERNEL);
2125         if (fbdev == NULL) {
2126                 r = -ENOMEM;
2127                 goto err0;
2128         }
2129
2130         mutex_init(&fbdev->mtx);
2131
2132         fbdev->dev = &pdev->dev;
2133         platform_set_drvdata(pdev, fbdev);
2134
2135         r = 0;
2136         fbdev->num_displays = 0;
2137         dssdev = NULL;
2138         for_each_dss_dev(dssdev) {
2139                 omap_dss_get_device(dssdev);
2140
2141                 if (!dssdev->driver) {
2142                         dev_err(&pdev->dev, "no driver for display\n");
2143                         r = -ENODEV;
2144                 }
2145
2146                 fbdev->displays[fbdev->num_displays++] = dssdev;
2147         }
2148
2149         if (r)
2150                 goto cleanup;
2151
2152         if (fbdev->num_displays == 0) {
2153                 dev_err(&pdev->dev, "no displays\n");
2154                 r = -EINVAL;
2155                 goto cleanup;
2156         }
2157
2158         fbdev->num_overlays = omap_dss_get_num_overlays();
2159         for (i = 0; i < fbdev->num_overlays; i++)
2160                 fbdev->overlays[i] = omap_dss_get_overlay(i);
2161
2162         fbdev->num_managers = omap_dss_get_num_overlay_managers();
2163         for (i = 0; i < fbdev->num_managers; i++)
2164                 fbdev->managers[i] = omap_dss_get_overlay_manager(i);
2165
2166         if (def_mode && strlen(def_mode) > 0) {
2167                 if (omapfb_parse_def_modes(fbdev))
2168                         dev_warn(&pdev->dev, "cannot parse default modes\n");
2169         }
2170
2171         r = omapfb_create_framebuffers(fbdev);
2172         if (r)
2173                 goto cleanup;
2174
2175         for (i = 0; i < fbdev->num_managers; i++) {
2176                 struct omap_overlay_manager *mgr;
2177                 mgr = fbdev->managers[i];
2178                 r = mgr->apply(mgr);
2179                 if (r)
2180                         dev_warn(fbdev->dev, "failed to apply dispc config\n");
2181         }
2182
2183         DBG("mgr->apply'ed\n");
2184
2185         /* gfx overlay should be the default one. find a display
2186          * connected to that, and use it as default display */
2187         ovl = omap_dss_get_overlay(0);
2188         if (ovl->manager && ovl->manager->device) {
2189                 def_display = ovl->manager->device;
2190         } else {
2191                 dev_warn(&pdev->dev, "cannot find default display\n");
2192                 def_display = NULL;
2193         }
2194
2195         if (def_display) {
2196                 struct omap_dss_driver *dssdrv = def_display->driver;
2197
2198                 r = def_display->driver->enable(def_display);
2199                 if (r) {
2200                         dev_warn(fbdev->dev, "Failed to enable display '%s'\n",
2201                                         def_display->name);
2202                         goto cleanup;
2203                 }
2204
2205                 if (def_display->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) {
2206                         u16 w, h;
2207                         if (dssdrv->enable_te)
2208                                 dssdrv->enable_te(def_display, 1);
2209                         if (dssdrv->set_update_mode)
2210                                 dssdrv->set_update_mode(def_display,
2211                                                 OMAP_DSS_UPDATE_MANUAL);
2212
2213                         dssdrv->get_resolution(def_display, &w, &h);
2214                         def_display->driver->update(def_display, 0, 0, w, h);
2215                 } else {
2216                         if (dssdrv->set_update_mode)
2217                                 dssdrv->set_update_mode(def_display,
2218                                                 OMAP_DSS_UPDATE_AUTO);
2219                 }
2220         }
2221
2222         return 0;
2223
2224 cleanup:
2225         omapfb_free_resources(fbdev);
2226 err0:
2227         dev_err(&pdev->dev, "failed to setup omapfb\n");
2228         return r;
2229 }
2230
2231 static int omapfb_remove(struct platform_device *pdev)
2232 {
2233         struct omapfb2_device *fbdev = platform_get_drvdata(pdev);
2234
2235         /* FIXME: wait till completion of pending events */
2236
2237         omapfb_remove_sysfs(fbdev);
2238
2239         omapfb_free_resources(fbdev);
2240
2241         return 0;
2242 }
2243
2244 static struct platform_driver omapfb_driver = {
2245         .probe          = omapfb_probe,
2246         .remove         = omapfb_remove,
2247         .driver         = {
2248                 .name   = "omapfb",
2249                 .owner  = THIS_MODULE,
2250         },
2251 };
2252
2253 static int __init omapfb_init(void)
2254 {
2255         DBG("omapfb_init\n");
2256
2257         if (platform_driver_register(&omapfb_driver)) {
2258                 printk(KERN_ERR "failed to register omapfb driver\n");
2259                 return -ENODEV;
2260         }
2261
2262         return 0;
2263 }
2264
2265 static void __exit omapfb_exit(void)
2266 {
2267         DBG("omapfb_exit\n");
2268         platform_driver_unregister(&omapfb_driver);
2269 }
2270
2271 module_param_named(mode, def_mode, charp, 0);
2272 module_param_named(vram, def_vram, charp, 0);
2273 module_param_named(rotate, def_rotate, int, 0);
2274 module_param_named(vrfb, def_vrfb, bool, 0);
2275 module_param_named(mirror, def_mirror, bool, 0);
2276
2277 /* late_initcall to let panel/ctrl drivers loaded first.
2278  * I guess better option would be a more dynamic approach,
2279  * so that omapfb reacts to new panels when they are loaded */
2280 late_initcall(omapfb_init);
2281 /*module_init(omapfb_init);*/
2282 module_exit(omapfb_exit);
2283
2284 MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@nokia.com>");
2285 MODULE_DESCRIPTION("OMAP2/3 Framebuffer");
2286 MODULE_LICENSE("GPL v2");