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/slab.h>
  26 #include <linux/fb.h>
  27 #include <linux/dma-mapping.h>
  28 #include <linux/vmalloc.h>
  29 #include <linux/device.h>
  30 #include <linux/platform_device.h>
  31 #include <linux/omapfb.h>
  32
  33 #include <plat/display.h>
  34 #include <plat/vram.h>
  35 #include <plat/vrfb.h>
  36
  37 #include "omapfb.h"
  38
  39 #define MODULE_NAME     "omapfb"
  40
  41 #define OMAPFB_PLANE_XRES_MIN           8
  42 #define OMAPFB_PLANE_YRES_MIN           8
  43
  44 static char *def_mode;
  45 static char *def_vram;
  46 static int def_vrfb;
  47 static int def_rotate;
  48 static int def_mirror;
  49
  50 #ifdef DEBUG
  51 unsigned int omapfb_debug;
  52 module_param_named(debug, omapfb_debug, bool, 0644);
  53 static unsigned int omapfb_test_pattern;
  54 module_param_named(test, omapfb_test_pattern, bool, 0644);
  55 #endif
  56
  57 static int omapfb_fb_init(struct omapfb2_device *fbdev, struct fb_info *fbi);
  58 static int omapfb_get_recommended_bpp(struct omapfb2_device *fbdev,
  59                 struct omap_dss_device *dssdev);
  60
  61 #ifdef DEBUG
  62 static void draw_pixel(struct fb_info *fbi, int x, int y, unsigned color)
  63 {
  64         struct fb_var_screeninfo *var = &fbi->var;
  65         struct fb_fix_screeninfo *fix = &fbi->fix;
  66         void __iomem *addr = fbi->screen_base;
  67         const unsigned bytespp = var->bits_per_pixel >> 3;
  68         const unsigned line_len = fix->line_length / bytespp;
  69
  70         int r = (color >> 16) & 0xff;
  71         int g = (color >> 8) & 0xff;
  72         int b = (color >> 0) & 0xff;
  73
  74         if (var->bits_per_pixel == 16) {
  75                 u16 __iomem *p = (u16 __iomem *)addr;
  76                 p += y * line_len + x;
  77
  78                 r = r * 32 / 256;
  79                 g = g * 64 / 256;
  80                 b = b * 32 / 256;
  81
  82                 __raw_writew((r << 11) | (g << 5) | (b << 0), p);
  83         } else if (var->bits_per_pixel == 24) {
  84                 u8 __iomem *p = (u8 __iomem *)addr;
  85                 p += (y * line_len + x) * 3;
  86
  87                 __raw_writeb(b, p + 0);
  88                 __raw_writeb(g, p + 1);
  89                 __raw_writeb(r, p + 2);
  90         } else if (var->bits_per_pixel == 32) {
  91                 u32 __iomem *p = (u32 __iomem *)addr;
  92                 p += y * line_len + x;
  93                 __raw_writel(color, p);
  94         }
  95 }
  96
  97 static void fill_fb(struct fb_info *fbi)
  98 {
  99         struct fb_var_screeninfo *var = &fbi->var;
 100         const short w = var->xres_virtual;
 101         const short h = var->yres_virtual;
 102         void __iomem *addr = fbi->screen_base;
 103         int y, x;
 104
 105         if (!addr)
 106                 return;
 107
 108         DBG("fill_fb %dx%d, line_len %d bytes\n", w, h, fbi->fix.line_length);
 109
 110         for (y = 0; y < h; y++) {
 111                 for (x = 0; x < w; x++) {
 112                         if (x < 20 && y < 20)
 113                                 draw_pixel(fbi, x, y, 0xffffff);
 114                         else if (x < 20 && (y > 20 && y < h - 20))
 115                                 draw_pixel(fbi, x, y, 0xff);
 116                         else if (y < 20 && (x > 20 && x < w - 20))
 117                                 draw_pixel(fbi, x, y, 0xff00);
 118                         else if (x > w - 20 && (y > 20 && y < h - 20))
 119                                 draw_pixel(fbi, x, y, 0xff0000);
 120                         else if (y > h - 20 && (x > 20 && x < w - 20))
 121                                 draw_pixel(fbi, x, y, 0xffff00);
 122                         else if (x == 20 || x == w - 20 ||
 123                                         y == 20 || y == h - 20)
 124                                 draw_pixel(fbi, x, y, 0xffffff);
 125                         else if (x == y || w - x == h - y)
 126                                 draw_pixel(fbi, x, y, 0xff00ff);
 127                         else if (w - x == y || x == h - y)
 128                                 draw_pixel(fbi, x, y, 0x00ffff);
 129                         else if (x > 20 && y > 20 && x < w - 20 && y < h - 20) {
 130                                 int t = x * 3 / w;
 131                                 unsigned r = 0, g = 0, b = 0;
 132                                 unsigned c;
 133                                 if (var->bits_per_pixel == 16) {
 134                                         if (t == 0)
 135                                                 b = (y % 32) * 256 / 32;
 136                                         else if (t == 1)
 137                                                 g = (y % 64) * 256 / 64;
 138                                         else if (t == 2)
 139                                                 r = (y % 32) * 256 / 32;
 140                                 } else {
 141                                         if (t == 0)
 142                                                 b = (y % 256);
 143                                         else if (t == 1)
 144                                                 g = (y % 256);
 145                                         else if (t == 2)
 146                                                 r = (y % 256);
 147                                 }
 148                                 c = (r << 16) | (g << 8) | (b << 0);
 149                                 draw_pixel(fbi, x, y, c);
 150                         } else {
 151                                 draw_pixel(fbi, x, y, 0);
 152                         }
 153                 }
 154         }
 155 }
 156 #endif
 157
 158 static unsigned omapfb_get_vrfb_offset(const struct omapfb_info *ofbi, int rot)
 159 {
 160         const struct vrfb *vrfb = &ofbi->region->vrfb;
 161         unsigned offset;
 162
 163         switch (rot) {
 164         case FB_ROTATE_UR:
 165                 offset = 0;
 166                 break;
 167         case FB_ROTATE_CW:
 168                 offset = vrfb->yoffset;
 169                 break;
 170         case FB_ROTATE_UD:
 171                 offset = vrfb->yoffset * OMAP_VRFB_LINE_LEN + vrfb->xoffset;
 172                 break;
 173         case FB_ROTATE_CCW:
 174                 offset = vrfb->xoffset * OMAP_VRFB_LINE_LEN;
 175                 break;
 176         default:
 177                 BUG();
 178         }
 179
 180         offset *= vrfb->bytespp;
 181
 182         return offset;
 183 }
 184
 185 static u32 omapfb_get_region_rot_paddr(const struct omapfb_info *ofbi, int rot)
 186 {
 187         if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
 188                 return ofbi->region->vrfb.paddr[rot]
 189                         + omapfb_get_vrfb_offset(ofbi, rot);
 190         } else {
 191                 return ofbi->region->paddr;
 192         }
 193 }
 194
 195 static u32 omapfb_get_region_paddr(const struct omapfb_info *ofbi)
 196 {
 197         if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
 198                 return ofbi->region->vrfb.paddr[0];
 199         else
 200                 return ofbi->region->paddr;
 201 }
 202
 203 static void __iomem *omapfb_get_region_vaddr(const struct omapfb_info *ofbi)
 204 {
 205         if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
 206                 return ofbi->region->vrfb.vaddr[0];
 207         else
 208                 return ofbi->region->vaddr;
 209 }
 210
 211 static struct omapfb_colormode omapfb_colormodes[] = {
 212         {
 213                 .dssmode = OMAP_DSS_COLOR_UYVY,
 214                 .bits_per_pixel = 16,
 215                 .nonstd = OMAPFB_COLOR_YUV422,
 216         }, {
 217                 .dssmode = OMAP_DSS_COLOR_YUV2,
 218                 .bits_per_pixel = 16,
 219                 .nonstd = OMAPFB_COLOR_YUY422,
 220         }, {
 221                 .dssmode = OMAP_DSS_COLOR_ARGB16,
 222                 .bits_per_pixel = 16,
 223                 .red    = { .length = 4, .offset = 8, .msb_right = 0 },
 224                 .green  = { .length = 4, .offset = 4, .msb_right = 0 },
 225                 .blue   = { .length = 4, .offset = 0, .msb_right = 0 },
 226                 .transp = { .length = 4, .offset = 12, .msb_right = 0 },
 227         }, {
 228                 .dssmode = OMAP_DSS_COLOR_RGB16,
 229                 .bits_per_pixel = 16,
 230                 .red    = { .length = 5, .offset = 11, .msb_right = 0 },
 231                 .green  = { .length = 6, .offset = 5, .msb_right = 0 },
 232                 .blue   = { .length = 5, .offset = 0, .msb_right = 0 },
 233                 .transp = { .length = 0, .offset = 0, .msb_right = 0 },
 234         }, {
 235                 .dssmode = OMAP_DSS_COLOR_RGB24P,
 236                 .bits_per_pixel = 24,
 237                 .red    = { .length = 8, .offset = 16, .msb_right = 0 },
 238                 .green  = { .length = 8, .offset = 8, .msb_right = 0 },
 239                 .blue   = { .length = 8, .offset = 0, .msb_right = 0 },
 240                 .transp = { .length = 0, .offset = 0, .msb_right = 0 },
 241         }, {
 242                 .dssmode = OMAP_DSS_COLOR_RGB24U,
 243                 .bits_per_pixel = 32,
 244                 .red    = { .length = 8, .offset = 16, .msb_right = 0 },
 245                 .green  = { .length = 8, .offset = 8, .msb_right = 0 },
 246                 .blue   = { .length = 8, .offset = 0, .msb_right = 0 },
 247                 .transp = { .length = 0, .offset = 0, .msb_right = 0 },
 248         }, {
 249                 .dssmode = OMAP_DSS_COLOR_ARGB32,
 250                 .bits_per_pixel = 32,
 251                 .red    = { .length = 8, .offset = 16, .msb_right = 0 },
 252                 .green  = { .length = 8, .offset = 8, .msb_right = 0 },
 253                 .blue   = { .length = 8, .offset = 0, .msb_right = 0 },
 254                 .transp = { .length = 8, .offset = 24, .msb_right = 0 },
 255         }, {
 256                 .dssmode = OMAP_DSS_COLOR_RGBA32,
 257                 .bits_per_pixel = 32,
 258                 .red    = { .length = 8, .offset = 24, .msb_right = 0 },
 259                 .green  = { .length = 8, .offset = 16, .msb_right = 0 },
 260                 .blue   = { .length = 8, .offset = 8, .msb_right = 0 },
 261                 .transp = { .length = 8, .offset = 0, .msb_right = 0 },
 262         }, {
 263                 .dssmode = OMAP_DSS_COLOR_RGBX32,
 264                 .bits_per_pixel = 32,
 265                 .red    = { .length = 8, .offset = 24, .msb_right = 0 },
 266                 .green  = { .length = 8, .offset = 16, .msb_right = 0 },
 267                 .blue   = { .length = 8, .offset = 8, .msb_right = 0 },
 268                 .transp = { .length = 0, .offset = 0, .msb_right = 0 },
 269         },
 270 };
 271
 272 static bool cmp_var_to_colormode(struct fb_var_screeninfo *var,
 273                 struct omapfb_colormode *color)
 274 {
 275         bool cmp_component(struct fb_bitfield *f1, struct fb_bitfield *f2)
 276         {
 277                 return f1->length == f2->length &&
 278                         f1->offset == f2->offset &&
 279                         f1->msb_right == f2->msb_right;
 280         }
 281
 282         if (var->bits_per_pixel == 0 ||
 283                         var->red.length == 0 ||
 284                         var->blue.length == 0 ||
 285                         var->green.length == 0)
 286                 return 0;
 287
 288         return var->bits_per_pixel == color->bits_per_pixel &&
 289                 cmp_component(&var->red, &color->red) &&
 290                 cmp_component(&var->green, &color->green) &&
 291                 cmp_component(&var->blue, &color->blue) &&
 292                 cmp_component(&var->transp, &color->transp);
 293 }
 294
 295 static void assign_colormode_to_var(struct fb_var_screeninfo *var,
 296                 struct omapfb_colormode *color)
 297 {
 298         var->bits_per_pixel = color->bits_per_pixel;
 299         var->nonstd = color->nonstd;
 300         var->red = color->red;
 301         var->green = color->green;
 302         var->blue = color->blue;
 303         var->transp = color->transp;
 304 }
 305
 306 static int fb_mode_to_dss_mode(struct fb_var_screeninfo *var,
 307                 enum omap_color_mode *mode)
 308 {
 309         enum omap_color_mode dssmode;
 310         int i;
 311
 312         /* first match with nonstd field */
 313         if (var->nonstd) {
 314                 for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) {
 315                         struct omapfb_colormode *m = &omapfb_colormodes[i];
 316                         if (var->nonstd == m->nonstd) {
 317                                 assign_colormode_to_var(var, m);
 318                                 *mode = m->dssmode;
 319                                 return 0;
 320                         }
 321                 }
 322
 323                 return -EINVAL;
 324         }
 325
 326         /* then try exact match of bpp and colors */
 327         for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) {
 328                 struct omapfb_colormode *m = &omapfb_colormodes[i];
 329                 if (cmp_var_to_colormode(var, m)) {
 330                         assign_colormode_to_var(var, m);
 331                         *mode = m->dssmode;
 332                         return 0;
 333                 }
 334         }
 335
 336         /* match with bpp if user has not filled color fields
 337          * properly */
 338         switch (var->bits_per_pixel) {
 339         case 1:
 340                 dssmode = OMAP_DSS_COLOR_CLUT1;
 341                 break;
 342         case 2:
 343                 dssmode = OMAP_DSS_COLOR_CLUT2;
 344                 break;
 345         case 4:
 346                 dssmode = OMAP_DSS_COLOR_CLUT4;
 347                 break;
 348         case 8:
 349                 dssmode = OMAP_DSS_COLOR_CLUT8;
 350                 break;
 351         case 12:
 352                 dssmode = OMAP_DSS_COLOR_RGB12U;
 353                 break;
 354         case 16:
 355                 dssmode = OMAP_DSS_COLOR_RGB16;
 356                 break;
 357         case 24:
 358                 dssmode = OMAP_DSS_COLOR_RGB24P;
 359                 break;
 360         case 32:
 361                 dssmode = OMAP_DSS_COLOR_RGB24U;
 362                 break;
 363         default:
 364                 return -EINVAL;
 365         }
 366
 367         for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) {
 368                 struct omapfb_colormode *m = &omapfb_colormodes[i];
 369                 if (dssmode == m->dssmode) {
 370                         assign_colormode_to_var(var, m);
 371                         *mode = m->dssmode;
 372                         return 0;
 373                 }
 374         }
 375
 376         return -EINVAL;
 377 }
 378
 379 static int check_fb_res_bounds(struct fb_var_screeninfo *var)
 380 {
 381         int xres_min = OMAPFB_PLANE_XRES_MIN;
 382         int xres_max = 2048;
 383         int yres_min = OMAPFB_PLANE_YRES_MIN;
 384         int yres_max = 2048;
 385
 386         /* XXX: some applications seem to set virtual res to 0. */
 387         if (var->xres_virtual == 0)
 388                 var->xres_virtual = var->xres;
 389
 390         if (var->yres_virtual == 0)
 391                 var->yres_virtual = var->yres;
 392
 393         if (var->xres_virtual < xres_min || var->yres_virtual < yres_min)
 394                 return -EINVAL;
 395
 396         if (var->xres < xres_min)
 397                 var->xres = xres_min;
 398         if (var->yres < yres_min)
 399                 var->yres = yres_min;
 400         if (var->xres > xres_max)
 401                 var->xres = xres_max;
 402         if (var->yres > yres_max)
 403                 var->yres = yres_max;
 404
 405         if (var->xres > var->xres_virtual)
 406                 var->xres = var->xres_virtual;
 407         if (var->yres > var->yres_virtual)
 408                 var->yres = var->yres_virtual;
 409
 410         return 0;
 411 }
 412
 413 static void shrink_height(unsigned long max_frame_size,
 414                 struct fb_var_screeninfo *var)
 415 {
 416         DBG("can't fit FB into memory, reducing y\n");
 417         var->yres_virtual = max_frame_size /
 418                 (var->xres_virtual * var->bits_per_pixel >> 3);
 419
 420         if (var->yres_virtual < OMAPFB_PLANE_YRES_MIN)
 421                 var->yres_virtual = OMAPFB_PLANE_YRES_MIN;
 422
 423         if (var->yres > var->yres_virtual)
 424                 var->yres = var->yres_virtual;
 425 }
 426
 427 static void shrink_width(unsigned long max_frame_size,
 428                 struct fb_var_screeninfo *var)
 429 {
 430         DBG("can't fit FB into memory, reducing x\n");
 431         var->xres_virtual = max_frame_size / var->yres_virtual /
 432                 (var->bits_per_pixel >> 3);
 433
 434         if (var->xres_virtual < OMAPFB_PLANE_XRES_MIN)
 435                 var->xres_virtual = OMAPFB_PLANE_XRES_MIN;
 436
 437         if (var->xres > var->xres_virtual)
 438                 var->xres = var->xres_virtual;
 439 }
 440
 441 static int check_vrfb_fb_size(unsigned long region_size,
 442                 const struct fb_var_screeninfo *var)
 443 {
 444         unsigned long min_phys_size = omap_vrfb_min_phys_size(var->xres_virtual,
 445                 var->yres_virtual, var->bits_per_pixel >> 3);
 446
 447         return min_phys_size > region_size ? -EINVAL : 0;
 448 }
 449
 450 static int check_fb_size(const struct omapfb_info *ofbi,
 451                 struct fb_var_screeninfo *var)
 452 {
 453         unsigned long max_frame_size = ofbi->region->size;
 454         int bytespp = var->bits_per_pixel >> 3;
 455         unsigned long line_size = var->xres_virtual * bytespp;
 456
 457         if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
 458                 /* One needs to check for both VRFB and OMAPFB limitations. */
 459                 if (check_vrfb_fb_size(max_frame_size, var))
 460                         shrink_height(omap_vrfb_max_height(
 461                                 max_frame_size, var->xres_virtual, bytespp) *
 462                                 line_size, var);
 463
 464                 if (check_vrfb_fb_size(max_frame_size, var)) {
 465                         DBG("cannot fit FB to memory\n");
 466                         return -EINVAL;
 467                 }
 468
 469                 return 0;
 470         }
 471
 472         DBG("max frame size %lu, line size %lu\n", max_frame_size, line_size);
 473
 474         if (line_size * var->yres_virtual > max_frame_size)
 475                 shrink_height(max_frame_size, var);
 476
 477         if (line_size * var->yres_virtual > max_frame_size) {
 478                 shrink_width(max_frame_size, var);
 479                 line_size = var->xres_virtual * bytespp;
 480         }
 481
 482         if (line_size * var->yres_virtual > max_frame_size) {
 483                 DBG("cannot fit FB to memory\n");
 484                 return -EINVAL;
 485         }
 486
 487         return 0;
 488 }
 489
 490 /*
 491  * Consider if VRFB assisted rotation is in use and if the virtual space for
 492  * the zero degree view needs to be mapped. The need for mapping also acts as
 493  * the trigger for setting up the hardware on the context in question. This
 494  * ensures that one does not attempt to access the virtual view before the
 495  * hardware is serving the address translations.
 496  */
 497 static int setup_vrfb_rotation(struct fb_info *fbi)
 498 {
 499         struct omapfb_info *ofbi = FB2OFB(fbi);
 500         struct omapfb2_mem_region *rg = ofbi->region;
 501         struct vrfb *vrfb = &rg->vrfb;
 502         struct fb_var_screeninfo *var = &fbi->var;
 503         struct fb_fix_screeninfo *fix = &fbi->fix;
 504         unsigned bytespp;
 505         bool yuv_mode;
 506         enum omap_color_mode mode;
 507         int r;
 508         bool reconf;
 509
 510         if (!rg->size || ofbi->rotation_type != OMAP_DSS_ROT_VRFB)
 511                 return 0;
 512
 513         DBG("setup_vrfb_rotation\n");
 514
 515         r = fb_mode_to_dss_mode(var, &mode);
 516         if (r)
 517                 return r;
 518
 519         bytespp = var->bits_per_pixel >> 3;
 520
 521         yuv_mode = mode == OMAP_DSS_COLOR_YUV2 || mode == OMAP_DSS_COLOR_UYVY;
 522
 523         /* We need to reconfigure VRFB if the resolution changes, if yuv mode
 524          * is enabled/disabled, or if bytes per pixel changes */
 525
 526         /* XXX we shouldn't allow this when framebuffer is mmapped */
 527
 528         reconf = false;
 529
 530         if (yuv_mode != vrfb->yuv_mode)
 531                 reconf = true;
 532         else if (bytespp != vrfb->bytespp)
 533                 reconf = true;
 534         else if (vrfb->xres != var->xres_virtual ||
 535                         vrfb->yres != var->yres_virtual)
 536                 reconf = true;
 537
 538         if (vrfb->vaddr[0] && reconf) {
 539                 fbi->screen_base = NULL;
 540                 fix->smem_start = 0;
 541                 fix->smem_len = 0;
 542                 iounmap(vrfb->vaddr[0]);
 543                 vrfb->vaddr[0] = NULL;
 544                 DBG("setup_vrfb_rotation: reset fb\n");
 545         }
 546
 547         if (vrfb->vaddr[0])
 548                 return 0;
 549
 550         omap_vrfb_setup(&rg->vrfb, rg->paddr,
 551                         var->xres_virtual,
 552                         var->yres_virtual,
 553                         bytespp, yuv_mode);
 554
 555         /* Now one can ioremap the 0 angle view */
 556         r = omap_vrfb_map_angle(vrfb, var->yres_virtual, 0);
 557         if (r)
 558                 return r;
 559
 560         /* used by open/write in fbmem.c */
 561         fbi->screen_base = ofbi->region->vrfb.vaddr[0];
 562
 563         fix->smem_start = ofbi->region->vrfb.paddr[0];
 564
 565         switch (var->nonstd) {
 566         case OMAPFB_COLOR_YUV422:
 567         case OMAPFB_COLOR_YUY422:
 568                 fix->line_length =
 569                         (OMAP_VRFB_LINE_LEN * var->bits_per_pixel) >> 2;
 570                 break;
 571         default:
 572                 fix->line_length =
 573                         (OMAP_VRFB_LINE_LEN * var->bits_per_pixel) >> 3;
 574                 break;
 575         }
 576
 577         fix->smem_len = var->yres_virtual * fix->line_length;
 578
 579         return 0;
 580 }
 581
 582 int dss_mode_to_fb_mode(enum omap_color_mode dssmode,
 583                         struct fb_var_screeninfo *var)
 584 {
 585         int i;
 586
 587         for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) {
 588                 struct omapfb_colormode *mode = &omapfb_colormodes[i];
 589                 if (dssmode == mode->dssmode) {
 590                         assign_colormode_to_var(var, mode);
 591                         return 0;
 592                 }
 593         }
 594         return -ENOENT;
 595 }
 596
 597 void set_fb_fix(struct fb_info *fbi)
 598 {
 599         struct fb_fix_screeninfo *fix = &fbi->fix;
 600         struct fb_var_screeninfo *var = &fbi->var;
 601         struct omapfb_info *ofbi = FB2OFB(fbi);
 602         struct omapfb2_mem_region *rg = ofbi->region;
 603
 604         DBG("set_fb_fix\n");
 605
 606         /* used by open/write in fbmem.c */
 607         fbi->screen_base = (char __iomem *)omapfb_get_region_vaddr(ofbi);
 608
 609         /* used by mmap in fbmem.c */
 610         if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
 611                 switch (var->nonstd) {
 612                 case OMAPFB_COLOR_YUV422:
 613                 case OMAPFB_COLOR_YUY422:
 614                         fix->line_length =
 615                                 (OMAP_VRFB_LINE_LEN * var->bits_per_pixel) >> 2;
 616                         break;
 617                 default:
 618                         fix->line_length =
 619                                 (OMAP_VRFB_LINE_LEN * var->bits_per_pixel) >> 3;
 620                         break;
 621                 }
 622
 623                 fix->smem_len = var->yres_virtual * fix->line_length;
 624         } else {
 625                 fix->line_length =
 626                         (var->xres_virtual * var->bits_per_pixel) >> 3;
 627                 fix->smem_len = rg->size;
 628         }
 629
 630         fix->smem_start = omapfb_get_region_paddr(ofbi);
 631
 632         fix->type = FB_TYPE_PACKED_PIXELS;
 633
 634         if (var->nonstd)
 635                 fix->visual = FB_VISUAL_PSEUDOCOLOR;
 636         else {
 637                 switch (var->bits_per_pixel) {
 638                 case 32:
 639                 case 24:
 640                 case 16:
 641                 case 12:
 642                         fix->visual = FB_VISUAL_TRUECOLOR;
 643                         /* 12bpp is stored in 16 bits */
 644                         break;
 645                 case 1:
 646                 case 2:
 647                 case 4:
 648                 case 8:
 649                         fix->visual = FB_VISUAL_PSEUDOCOLOR;
 650                         break;
 651                 }
 652         }
 653
 654         fix->accel = FB_ACCEL_NONE;
 655
 656         fix->xpanstep = 1;
 657         fix->ypanstep = 1;
 658 }
 659
 660 /* check new var and possibly modify it to be ok */
 661 int check_fb_var(struct fb_info *fbi, struct fb_var_screeninfo *var)
 662 {
 663         struct omapfb_info *ofbi = FB2OFB(fbi);
 664         struct omap_dss_device *display = fb2display(fbi);
 665         enum omap_color_mode mode = 0;
 666         int i;
 667         int r;
 668
 669         DBG("check_fb_var %d\n", ofbi->id);
 670
 671         WARN_ON(!atomic_read(&ofbi->region->lock_count));
 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 > 3)
 687                 return -EINVAL;
 688
 689         if (check_fb_res_bounds(var))
 690                 return -EINVAL;
 691
 692         /* When no memory is allocated ignore the size check */
 693         if (ofbi->region->size != 0 && check_fb_size(ofbi, var))
 694                 return -EINVAL;
 695
 696         if (var->xres + var->xoffset > var->xres_virtual)
 697                 var->xoffset = var->xres_virtual - var->xres;
 698         if (var->yres + var->yoffset > var->yres_virtual)
 699                 var->yoffset = var->yres_virtual - var->yres;
 700
 701         DBG("xres = %d, yres = %d, vxres = %d, vyres = %d\n",
 702                         var->xres, var->yres,
 703                         var->xres_virtual, var->yres_virtual);
 704
 705         var->height             = -1;
 706         var->width              = -1;
 707         var->grayscale          = 0;
 708
 709         if (display && display->driver->get_timings) {
 710                 struct omap_video_timings timings;
 711                 display->driver->get_timings(display, &timings);
 712
 713                 /* pixclock in ps, the rest in pixclock */
 714                 var->pixclock = timings.pixel_clock != 0 ?
 715                         KHZ2PICOS(timings.pixel_clock) :
 716                         0;
 717                 var->left_margin = timings.hbp;
 718                 var->right_margin = timings.hfp;
 719                 var->upper_margin = timings.vbp;
 720                 var->lower_margin = timings.vfp;
 721                 var->hsync_len = timings.hsw;
 722                 var->vsync_len = timings.vsw;
 723         } else {
 724                 var->pixclock = 0;
 725                 var->left_margin = 0;
 726                 var->right_margin = 0;
 727                 var->upper_margin = 0;
 728                 var->lower_margin = 0;
 729                 var->hsync_len = 0;
 730                 var->vsync_len = 0;
 731         }
 732
 733         /* TODO: get these from panel->config */
 734         var->vmode              = FB_VMODE_NONINTERLACED;
 735         var->sync               = 0;
 736
 737         return 0;
 738 }
 739
 740 /*
 741  * ---------------------------------------------------------------------------
 742  * fbdev framework callbacks
 743  * ---------------------------------------------------------------------------
 744  */
 745 static int omapfb_open(struct fb_info *fbi, int user)
 746 {
 747         return 0;
 748 }
 749
 750 static int omapfb_release(struct fb_info *fbi, int user)
 751 {
 752 #if 0
 753         struct omapfb_info *ofbi = FB2OFB(fbi);
 754         struct omapfb2_device *fbdev = ofbi->fbdev;
 755         struct omap_dss_device *display = fb2display(fbi);
 756
 757         DBG("Closing fb with plane index %d\n", ofbi->id);
 758
 759         omapfb_lock(fbdev);
 760
 761         if (display && display->get_update_mode && display->update) {
 762                 /* XXX this update should be removed, I think. But it's
 763                  * good for debugging */
 764                 if (display->get_update_mode(display) ==
 765                                 OMAP_DSS_UPDATE_MANUAL) {
 766                         u16 w, h;
 767
 768                         if (display->sync)
 769                                 display->sync(display);
 770
 771                         display->get_resolution(display, &w, &h);
 772                         display->update(display, 0, 0, w, h);
 773                 }
 774         }
 775
 776         if (display && display->sync)
 777                 display->sync(display);
 778
 779         omapfb_unlock(fbdev);
 780 #endif
 781         return 0;
 782 }
 783
 784 static unsigned calc_rotation_offset_dma(const struct fb_var_screeninfo *var,
 785                 const struct fb_fix_screeninfo *fix, int rotation)
 786 {
 787         unsigned offset;
 788
 789         offset = var->yoffset * fix->line_length +
 790                 var->xoffset * (var->bits_per_pixel >> 3);
 791
 792         return offset;
 793 }
 794
 795 static unsigned calc_rotation_offset_vrfb(const struct fb_var_screeninfo *var,
 796                 const struct fb_fix_screeninfo *fix, int rotation)
 797 {
 798         unsigned offset;
 799
 800         if (rotation == FB_ROTATE_UD)
 801                 offset = (var->yres_virtual - var->yres) *
 802                         fix->line_length;
 803         else if (rotation == FB_ROTATE_CW)
 804                 offset = (var->yres_virtual - var->yres) *
 805                         (var->bits_per_pixel >> 3);
 806         else
 807                 offset = 0;
 808
 809         if (rotation == FB_ROTATE_UR)
 810                 offset += var->yoffset * fix->line_length +
 811                         var->xoffset * (var->bits_per_pixel >> 3);
 812         else if (rotation == FB_ROTATE_UD)
 813                 offset -= var->yoffset * fix->line_length +
 814                         var->xoffset * (var->bits_per_pixel >> 3);
 815         else if (rotation == FB_ROTATE_CW)
 816                 offset -= var->xoffset * fix->line_length +
 817                         var->yoffset * (var->bits_per_pixel >> 3);
 818         else if (rotation == FB_ROTATE_CCW)
 819                 offset += var->xoffset * fix->line_length +
 820                         var->yoffset * (var->bits_per_pixel >> 3);
 821
 822         return offset;
 823 }
 824
 825 static void omapfb_calc_addr(const struct omapfb_info *ofbi,
 826                              const struct fb_var_screeninfo *var,
 827                              const struct fb_fix_screeninfo *fix,
 828                              int rotation, u32 *paddr, void __iomem **vaddr)
 829 {
 830         u32 data_start_p;
 831         void __iomem *data_start_v;
 832         int offset;
 833
 834         if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
 835                 data_start_p = omapfb_get_region_rot_paddr(ofbi, rotation);
 836                 data_start_v = NULL;
 837         } else {
 838                 data_start_p = omapfb_get_region_paddr(ofbi);
 839                 data_start_v = omapfb_get_region_vaddr(ofbi);
 840         }
 841
 842         if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
 843                 offset = calc_rotation_offset_vrfb(var, fix, rotation);
 844         else
 845                 offset = calc_rotation_offset_dma(var, fix, rotation);
 846
 847         data_start_p += offset;
 848         data_start_v += offset;
 849
 850         if (offset)
 851                 DBG("offset %d, %d = %d\n",
 852                     var->xoffset, var->yoffset, offset);
 853
 854         DBG("paddr %x, vaddr %p\n", data_start_p, data_start_v);
 855
 856         *paddr = data_start_p;
 857         *vaddr = data_start_v;
 858 }
 859
 860 /* setup overlay according to the fb */
 861 int omapfb_setup_overlay(struct fb_info *fbi, struct omap_overlay *ovl,
 862                 u16 posx, u16 posy, u16 outw, u16 outh)
 863 {
 864         int r = 0;
 865         struct omapfb_info *ofbi = FB2OFB(fbi);
 866         struct fb_var_screeninfo *var = &fbi->var;
 867         struct fb_fix_screeninfo *fix = &fbi->fix;
 868         enum omap_color_mode mode = 0;
 869         u32 data_start_p = 0;
 870         void __iomem *data_start_v = NULL;
 871         struct omap_overlay_info info;
 872         int xres, yres;
 873         int screen_width;
 874         int mirror;
 875         int rotation = var->rotate;
 876         int i;
 877
 878         WARN_ON(!atomic_read(&ofbi->region->lock_count));
 879
 880         for (i = 0; i < ofbi->num_overlays; i++) {
 881                 if (ovl != ofbi->overlays[i])
 882                         continue;
 883
 884                 rotation = (rotation + ofbi->rotation[i]) % 4;
 885                 break;
 886         }
 887
 888         DBG("setup_overlay %d, posx %d, posy %d, outw %d, outh %d\n", ofbi->id,
 889                         posx, posy, outw, outh);
 890
 891         if (rotation == FB_ROTATE_CW || rotation == FB_ROTATE_CCW) {
 892                 xres = var->yres;
 893                 yres = var->xres;
 894         } else {
 895                 xres = var->xres;
 896                 yres = var->yres;
 897         }
 898
 899         if (ofbi->region->size)
 900                 omapfb_calc_addr(ofbi, var, fix, rotation,
 901                                  &data_start_p, &data_start_v);
 902
 903         r = fb_mode_to_dss_mode(var, &mode);
 904         if (r) {
 905                 DBG("fb_mode_to_dss_mode failed");
 906                 goto err;
 907         }
 908
 909         switch (var->nonstd) {
 910         case OMAPFB_COLOR_YUV422:
 911         case OMAPFB_COLOR_YUY422:
 912                 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
 913                         screen_width = fix->line_length
 914                                 / (var->bits_per_pixel >> 2);
 915                         break;
 916                 }
 917         default:
 918                 screen_width = fix->line_length / (var->bits_per_pixel >> 3);
 919                 break;
 920         }
 921
 922         ovl->get_overlay_info(ovl, &info);
 923
 924         if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
 925                 mirror = 0;
 926         else
 927                 mirror = ofbi->mirror;
 928
 929         info.paddr = data_start_p;
 930         info.vaddr = data_start_v;
 931         info.screen_width = screen_width;
 932         info.width = xres;
 933         info.height = yres;
 934         info.color_mode = mode;
 935         info.rotation_type = ofbi->rotation_type;
 936         info.rotation = rotation;
 937         info.mirror = mirror;
 938
 939         info.pos_x = posx;
 940         info.pos_y = posy;
 941         info.out_width = outw;
 942         info.out_height = outh;
 943
 944         r = ovl->set_overlay_info(ovl, &info);
 945         if (r) {
 946                 DBG("ovl->setup_overlay_info failed\n");
 947                 goto err;
 948         }
 949
 950         return 0;
 951
 952 err:
 953         DBG("setup_overlay failed\n");
 954         return r;
 955 }
 956
 957 /* apply var to the overlay */
 958 int omapfb_apply_changes(struct fb_info *fbi, int init)
 959 {
 960         int r = 0;
 961         struct omapfb_info *ofbi = FB2OFB(fbi);
 962         struct fb_var_screeninfo *var = &fbi->var;
 963         struct omap_overlay *ovl;
 964         u16 posx, posy;
 965         u16 outw, outh;
 966         int i;
 967
 968 #ifdef DEBUG
 969         if (omapfb_test_pattern)
 970                 fill_fb(fbi);
 971 #endif
 972
 973         WARN_ON(!atomic_read(&ofbi->region->lock_count));
 974
 975         for (i = 0; i < ofbi->num_overlays; i++) {
 976                 ovl = ofbi->overlays[i];
 977
 978                 DBG("apply_changes, fb %d, ovl %d\n", ofbi->id, ovl->id);
 979
 980                 if (ofbi->region->size == 0) {
 981                         /* the fb is not available. disable the overlay */
 982                         omapfb_overlay_enable(ovl, 0);
 983                         if (!init && ovl->manager)
 984                                 ovl->manager->apply(ovl->manager);
 985                         continue;
 986                 }
 987
 988                 if (init || (ovl->caps & OMAP_DSS_OVL_CAP_SCALE) == 0) {
 989                         int rotation = (var->rotate + ofbi->rotation[i]) % 4;
 990                         if (rotation == FB_ROTATE_CW ||
 991                                         rotation == FB_ROTATE_CCW) {
 992                                 outw = var->yres;
 993                                 outh = var->xres;
 994                         } else {
 995                                 outw = var->xres;
 996                                 outh = var->yres;
 997                         }
 998                 } else {
 999                         outw = ovl->info.out_width;
1000                         outh = ovl->info.out_height;
1001                 }
1002
1003                 if (init) {
1004                         posx = 0;
1005                         posy = 0;
1006                 } else {
1007                         posx = ovl->info.pos_x;
1008                         posy = ovl->info.pos_y;
1009                 }
1010
1011                 r = omapfb_setup_overlay(fbi, ovl, posx, posy, outw, outh);
1012                 if (r)
1013                         goto err;
1014
1015                 if (!init && ovl->manager)
1016                         ovl->manager->apply(ovl->manager);
1017         }
1018         return 0;
1019 err:
1020         DBG("apply_changes failed\n");
1021         return r;
1022 }
1023
1024 /* checks var and eventually tweaks it to something supported,
1025  * DO NOT MODIFY PAR */
1026 static int omapfb_check_var(struct fb_var_screeninfo *var, struct fb_info *fbi)
1027 {
1028         struct omapfb_info *ofbi = FB2OFB(fbi);
1029         int r;
1030
1031         DBG("check_var(%d)\n", FB2OFB(fbi)->id);
1032
1033         omapfb_get_mem_region(ofbi->region);
1034
1035         r = check_fb_var(fbi, var);
1036
1037         omapfb_put_mem_region(ofbi->region);
1038
1039         return r;
1040 }
1041
1042 /* set the video mode according to info->var */
1043 static int omapfb_set_par(struct fb_info *fbi)
1044 {
1045         struct omapfb_info *ofbi = FB2OFB(fbi);
1046         int r;
1047
1048         DBG("set_par(%d)\n", FB2OFB(fbi)->id);
1049
1050         omapfb_get_mem_region(ofbi->region);
1051
1052         set_fb_fix(fbi);
1053
1054         r = setup_vrfb_rotation(fbi);
1055         if (r)
1056                 goto out;
1057
1058         r = omapfb_apply_changes(fbi, 0);
1059
1060  out:
1061         omapfb_put_mem_region(ofbi->region);
1062
1063         return r;
1064 }
1065
1066 static int omapfb_pan_display(struct fb_var_screeninfo *var,
1067                 struct fb_info *fbi)
1068 {
1069         struct omapfb_info *ofbi = FB2OFB(fbi);
1070         struct fb_var_screeninfo new_var;
1071         int r;
1072
1073         DBG("pan_display(%d)\n", FB2OFB(fbi)->id);
1074
1075         if (var->xoffset == fbi->var.xoffset &&
1076             var->yoffset == fbi->var.yoffset)
1077                 return 0;
1078
1079         new_var = fbi->var;
1080         new_var.xoffset = var->xoffset;
1081         new_var.yoffset = var->yoffset;
1082
1083         fbi->var = new_var;
1084
1085         omapfb_get_mem_region(ofbi->region);
1086
1087         r = omapfb_apply_changes(fbi, 0);
1088
1089         omapfb_put_mem_region(ofbi->region);
1090
1091         return r;
1092 }
1093
1094 static void mmap_user_open(struct vm_area_struct *vma)
1095 {
1096         struct omapfb2_mem_region *rg = vma->vm_private_data;
1097
1098         omapfb_get_mem_region(rg);
1099         atomic_inc(&rg->map_count);
1100         omapfb_put_mem_region(rg);
1101 }
1102
1103 static void mmap_user_close(struct vm_area_struct *vma)
1104 {
1105         struct omapfb2_mem_region *rg = vma->vm_private_data;
1106
1107         omapfb_get_mem_region(rg);
1108         atomic_dec(&rg->map_count);
1109         omapfb_put_mem_region(rg);
1110 }
1111
1112 static struct vm_operations_struct mmap_user_ops = {
1113         .open = mmap_user_open,
1114         .close = mmap_user_close,
1115 };
1116
1117 static int omapfb_mmap(struct fb_info *fbi, struct vm_area_struct *vma)
1118 {
1119         struct omapfb_info *ofbi = FB2OFB(fbi);
1120         struct fb_fix_screeninfo *fix = &fbi->fix;
1121         struct omapfb2_mem_region *rg;
1122         unsigned long off;
1123         unsigned long start;
1124         u32 len;
1125         int r = -EINVAL;
1126
1127         if (vma->vm_end - vma->vm_start == 0)
1128                 return 0;
1129         if (vma->vm_pgoff > (~0UL >> PAGE_SHIFT))
1130                 return -EINVAL;
1131         off = vma->vm_pgoff << PAGE_SHIFT;
1132
1133         rg = omapfb_get_mem_region(ofbi->region);
1134
1135         start = omapfb_get_region_paddr(ofbi);
1136         len = fix->smem_len;
1137         if (off >= len)
1138                 goto error;
1139         if ((vma->vm_end - vma->vm_start + off) > len)
1140                 goto error;
1141
1142         off += start;
1143
1144         DBG("user mmap region start %lx, len %d, off %lx\n", start, len, off);
1145
1146         vma->vm_pgoff = off >> PAGE_SHIFT;
1147         vma->vm_flags |= VM_IO | VM_RESERVED;
1148         vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
1149         vma->vm_ops = &mmap_user_ops;
1150         vma->vm_private_data = rg;
1151         if (io_remap_pfn_range(vma, vma->vm_start, off >> PAGE_SHIFT,
1152                                vma->vm_end - vma->vm_start,
1153                                vma->vm_page_prot)) {
1154                 r = -EAGAIN;
1155                 goto error;
1156         }
1157
1158         /* vm_ops.open won't be called for mmap itself. */
1159         atomic_inc(&rg->map_count);
1160
1161         omapfb_put_mem_region(rg);
1162
1163         return 0;
1164
1165  error:
1166         omapfb_put_mem_region(ofbi->region);
1167
1168         return r;
1169 }
1170
1171 /* Store a single color palette entry into a pseudo palette or the hardware
1172  * palette if one is available. For now we support only 16bpp and thus store
1173  * the entry only to the pseudo palette.
1174  */
1175 static int _setcolreg(struct fb_info *fbi, u_int regno, u_int red, u_int green,
1176                 u_int blue, u_int transp, int update_hw_pal)
1177 {
1178         /*struct omapfb_info *ofbi = FB2OFB(fbi);*/
1179         /*struct omapfb2_device *fbdev = ofbi->fbdev;*/
1180         struct fb_var_screeninfo *var = &fbi->var;
1181         int r = 0;
1182
1183         enum omapfb_color_format mode = OMAPFB_COLOR_RGB24U; /* XXX */
1184
1185         /*switch (plane->color_mode) {*/
1186         switch (mode) {
1187         case OMAPFB_COLOR_YUV422:
1188         case OMAPFB_COLOR_YUV420:
1189         case OMAPFB_COLOR_YUY422:
1190                 r = -EINVAL;
1191                 break;
1192         case OMAPFB_COLOR_CLUT_8BPP:
1193         case OMAPFB_COLOR_CLUT_4BPP:
1194         case OMAPFB_COLOR_CLUT_2BPP:
1195         case OMAPFB_COLOR_CLUT_1BPP:
1196                 /*
1197                    if (fbdev->ctrl->setcolreg)
1198                    r = fbdev->ctrl->setcolreg(regno, red, green, blue,
1199                    transp, update_hw_pal);
1200                    */
1201                 /* Fallthrough */
1202                 r = -EINVAL;
1203                 break;
1204         case OMAPFB_COLOR_RGB565:
1205         case OMAPFB_COLOR_RGB444:
1206         case OMAPFB_COLOR_RGB24P:
1207         case OMAPFB_COLOR_RGB24U:
1208                 if (r != 0)
1209                         break;
1210
1211                 if (regno < 16) {
1212                         u16 pal;
1213                         pal = ((red >> (16 - var->red.length)) <<
1214                                         var->red.offset) |
1215                                 ((green >> (16 - var->green.length)) <<
1216                                  var->green.offset) |
1217                                 (blue >> (16 - var->blue.length));
1218                         ((u32 *)(fbi->pseudo_palette))[regno] = pal;
1219                 }
1220                 break;
1221         default:
1222                 BUG();
1223         }
1224         return r;
1225 }
1226
1227 static int omapfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
1228                 u_int transp, struct fb_info *info)
1229 {
1230         DBG("setcolreg\n");
1231
1232         return _setcolreg(info, regno, red, green, blue, transp, 1);
1233 }
1234
1235 static int omapfb_setcmap(struct fb_cmap *cmap, struct fb_info *info)
1236 {
1237         int count, index, r;
1238         u16 *red, *green, *blue, *transp;
1239         u16 trans = 0xffff;
1240
1241         DBG("setcmap\n");
1242
1243         red     = cmap->red;
1244         green   = cmap->green;
1245         blue    = cmap->blue;
1246         transp  = cmap->transp;
1247         index   = cmap->start;
1248
1249         for (count = 0; count < cmap->len; count++) {
1250                 if (transp)
1251                         trans = *transp++;
1252                 r = _setcolreg(info, index++, *red++, *green++, *blue++, trans,
1253                                 count == cmap->len - 1);
1254                 if (r != 0)
1255                         return r;
1256         }
1257
1258         return 0;
1259 }
1260
1261 static int omapfb_blank(int blank, struct fb_info *fbi)
1262 {
1263         struct omapfb_info *ofbi = FB2OFB(fbi);
1264         struct omapfb2_device *fbdev = ofbi->fbdev;
1265         struct omap_dss_device *display = fb2display(fbi);
1266         int do_update = 0;
1267         int r = 0;
1268
1269         if (!display)
1270                 return -EINVAL;
1271
1272         omapfb_lock(fbdev);
1273
1274         switch (blank) {
1275         case FB_BLANK_UNBLANK:
1276                 if (display->state != OMAP_DSS_DISPLAY_SUSPENDED)
1277                         goto exit;
1278
1279                 if (display->driver->resume)
1280                         r = display->driver->resume(display);
1281
1282                 if (r == 0 && display->driver->get_update_mode &&
1283                                 display->driver->get_update_mode(display) ==
1284                                 OMAP_DSS_UPDATE_MANUAL)
1285                         do_update = 1;
1286
1287                 break;
1288
1289         case FB_BLANK_NORMAL:
1290                 /* FB_BLANK_NORMAL could be implemented.
1291                  * Needs DSS additions. */
1292         case FB_BLANK_VSYNC_SUSPEND:
1293         case FB_BLANK_HSYNC_SUSPEND:
1294         case FB_BLANK_POWERDOWN:
1295                 if (display->state != OMAP_DSS_DISPLAY_ACTIVE)
1296                         goto exit;
1297
1298                 if (display->driver->suspend)
1299                         r = display->driver->suspend(display);
1300
1301                 break;
1302
1303         default:
1304                 r = -EINVAL;
1305         }
1306
1307 exit:
1308         omapfb_unlock(fbdev);
1309
1310         if (r == 0 && do_update && display->driver->update) {
1311                 u16 w, h;
1312                 display->driver->get_resolution(display, &w, &h);
1313
1314                 r = display->driver->update(display, 0, 0, w, h);
1315         }
1316
1317         return r;
1318 }
1319
1320 #if 0
1321 /* XXX fb_read and fb_write are needed for VRFB */
1322 ssize_t omapfb_write(struct fb_info *info, const char __user *buf,
1323                 size_t count, loff_t *ppos)
1324 {
1325         DBG("omapfb_write %d, %lu\n", count, (unsigned long)*ppos);
1326         /* XXX needed for VRFB */
1327         return count;
1328 }
1329 #endif
1330
1331 static struct fb_ops omapfb_ops = {
1332         .owner          = THIS_MODULE,
1333         .fb_open        = omapfb_open,
1334         .fb_release     = omapfb_release,
1335         .fb_fillrect    = cfb_fillrect,
1336         .fb_copyarea    = cfb_copyarea,
1337         .fb_imageblit   = cfb_imageblit,
1338         .fb_blank       = omapfb_blank,
1339         .fb_ioctl       = omapfb_ioctl,
1340         .fb_check_var   = omapfb_check_var,
1341         .fb_set_par     = omapfb_set_par,
1342         .fb_pan_display = omapfb_pan_display,
1343         .fb_mmap        = omapfb_mmap,
1344         .fb_setcolreg   = omapfb_setcolreg,
1345         .fb_setcmap     = omapfb_setcmap,
1346         /*.fb_write     = omapfb_write,*/
1347 };
1348
1349 static void omapfb_free_fbmem(struct fb_info *fbi)
1350 {
1351         struct omapfb_info *ofbi = FB2OFB(fbi);
1352         struct omapfb2_device *fbdev = ofbi->fbdev;
1353         struct omapfb2_mem_region *rg;
1354
1355         rg = ofbi->region;
1356
1357         WARN_ON(atomic_read(&rg->map_count));
1358
1359         if (rg->paddr)
1360                 if (omap_vram_free(rg->paddr, rg->size))
1361                         dev_err(fbdev->dev, "VRAM FREE failed\n");
1362
1363         if (rg->vaddr)
1364                 iounmap(rg->vaddr);
1365
1366         if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
1367                 /* unmap the 0 angle rotation */
1368                 if (rg->vrfb.vaddr[0]) {
1369                         iounmap(rg->vrfb.vaddr[0]);
1370                         omap_vrfb_release_ctx(&rg->vrfb);
1371                         rg->vrfb.vaddr[0] = NULL;
1372                 }
1373         }
1374
1375         rg->vaddr = NULL;
1376         rg->paddr = 0;
1377         rg->alloc = 0;
1378         rg->size = 0;
1379 }
1380
1381 static void clear_fb_info(struct fb_info *fbi)
1382 {
1383         memset(&fbi->var, 0, sizeof(fbi->var));
1384         memset(&fbi->fix, 0, sizeof(fbi->fix));
1385         strlcpy(fbi->fix.id, MODULE_NAME, sizeof(fbi->fix.id));
1386 }
1387
1388 static int omapfb_free_all_fbmem(struct omapfb2_device *fbdev)
1389 {
1390         int i;
1391
1392         DBG("free all fbmem\n");
1393
1394         for (i = 0; i < fbdev->num_fbs; i++) {
1395                 struct fb_info *fbi = fbdev->fbs[i];
1396                 omapfb_free_fbmem(fbi);
1397                 clear_fb_info(fbi);
1398         }
1399
1400         return 0;
1401 }
1402
1403 static int omapfb_alloc_fbmem(struct fb_info *fbi, unsigned long size,
1404                 unsigned long paddr)
1405 {
1406         struct omapfb_info *ofbi = FB2OFB(fbi);
1407         struct omapfb2_device *fbdev = ofbi->fbdev;
1408         struct omapfb2_mem_region *rg;
1409         void __iomem *vaddr;
1410         int r;
1411
1412         rg = ofbi->region;
1413
1414         rg->paddr = 0;
1415         rg->vaddr = NULL;
1416         memset(&rg->vrfb, 0, sizeof rg->vrfb);
1417         rg->size = 0;
1418         rg->type = 0;
1419         rg->alloc = false;
1420         rg->map = false;
1421
1422         size = PAGE_ALIGN(size);
1423
1424         if (!paddr) {
1425                 DBG("allocating %lu bytes for fb %d\n", size, ofbi->id);
1426                 r = omap_vram_alloc(OMAP_VRAM_MEMTYPE_SDRAM, size, &paddr);
1427         } else {
1428                 DBG("reserving %lu bytes at %lx for fb %d\n", size, paddr,
1429                                 ofbi->id);
1430                 r = omap_vram_reserve(paddr, size);
1431         }
1432
1433         if (r) {
1434                 dev_err(fbdev->dev, "failed to allocate framebuffer\n");
1435                 return -ENOMEM;
1436         }
1437
1438         if (ofbi->rotation_type != OMAP_DSS_ROT_VRFB) {
1439                 vaddr = ioremap_wc(paddr, size);
1440
1441                 if (!vaddr) {
1442                         dev_err(fbdev->dev, "failed to ioremap framebuffer\n");
1443                         omap_vram_free(paddr, size);
1444                         return -ENOMEM;
1445                 }
1446
1447                 DBG("allocated VRAM paddr %lx, vaddr %p\n", paddr, vaddr);
1448         } else {
1449                 r = omap_vrfb_request_ctx(&rg->vrfb);
1450                 if (r) {
1451                         dev_err(fbdev->dev, "vrfb create ctx failed\n");
1452                         return r;
1453                 }
1454
1455                 vaddr = NULL;
1456         }
1457
1458         rg->paddr = paddr;
1459         rg->vaddr = vaddr;
1460         rg->size = size;
1461         rg->alloc = 1;
1462
1463         return 0;
1464 }
1465
1466 /* allocate fbmem using display resolution as reference */
1467 static int omapfb_alloc_fbmem_display(struct fb_info *fbi, unsigned long size,
1468                 unsigned long paddr)
1469 {
1470         struct omapfb_info *ofbi = FB2OFB(fbi);
1471         struct omapfb2_device *fbdev = ofbi->fbdev;
1472         struct omap_dss_device *display;
1473         int bytespp;
1474
1475         display =  fb2display(fbi);
1476
1477         if (!display)
1478                 return 0;
1479
1480         switch (omapfb_get_recommended_bpp(fbdev, display)) {
1481         case 16:
1482                 bytespp = 2;
1483                 break;
1484         case 24:
1485                 bytespp = 4;
1486                 break;
1487         default:
1488                 bytespp = 4;
1489                 break;
1490         }
1491
1492         if (!size) {
1493                 u16 w, h;
1494
1495                 display->driver->get_resolution(display, &w, &h);
1496
1497                 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
1498                         size = max(omap_vrfb_min_phys_size(w, h, bytespp),
1499                                         omap_vrfb_min_phys_size(h, w, bytespp));
1500
1501                         DBG("adjusting fb mem size for VRFB, %u -> %lu\n",
1502                                         w * h * bytespp, size);
1503                 } else {
1504                         size = w * h * bytespp;
1505                 }
1506         }
1507
1508         if (!size)
1509                 return 0;
1510
1511         return omapfb_alloc_fbmem(fbi, size, paddr);
1512 }
1513
1514 static enum omap_color_mode fb_format_to_dss_mode(enum omapfb_color_format fmt)
1515 {
1516         enum omap_color_mode mode;
1517
1518         switch (fmt) {
1519         case OMAPFB_COLOR_RGB565:
1520                 mode = OMAP_DSS_COLOR_RGB16;
1521                 break;
1522         case OMAPFB_COLOR_YUV422:
1523                 mode = OMAP_DSS_COLOR_YUV2;
1524                 break;
1525         case OMAPFB_COLOR_CLUT_8BPP:
1526                 mode = OMAP_DSS_COLOR_CLUT8;
1527                 break;
1528         case OMAPFB_COLOR_CLUT_4BPP:
1529                 mode = OMAP_DSS_COLOR_CLUT4;
1530                 break;
1531         case OMAPFB_COLOR_CLUT_2BPP:
1532                 mode = OMAP_DSS_COLOR_CLUT2;
1533                 break;
1534         case OMAPFB_COLOR_CLUT_1BPP:
1535                 mode = OMAP_DSS_COLOR_CLUT1;
1536                 break;
1537         case OMAPFB_COLOR_RGB444:
1538                 mode = OMAP_DSS_COLOR_RGB12U;
1539                 break;
1540         case OMAPFB_COLOR_YUY422:
1541                 mode = OMAP_DSS_COLOR_UYVY;
1542                 break;
1543         case OMAPFB_COLOR_ARGB16:
1544                 mode = OMAP_DSS_COLOR_ARGB16;
1545                 break;
1546         case OMAPFB_COLOR_RGB24U:
1547                 mode = OMAP_DSS_COLOR_RGB24U;
1548                 break;
1549         case OMAPFB_COLOR_RGB24P:
1550                 mode = OMAP_DSS_COLOR_RGB24P;
1551                 break;
1552         case OMAPFB_COLOR_ARGB32:
1553                 mode = OMAP_DSS_COLOR_ARGB32;
1554                 break;
1555         case OMAPFB_COLOR_RGBA32:
1556                 mode = OMAP_DSS_COLOR_RGBA32;
1557                 break;
1558         case OMAPFB_COLOR_RGBX32:
1559                 mode = OMAP_DSS_COLOR_RGBX32;
1560                 break;
1561         default:
1562                 mode = -EINVAL;
1563         }
1564
1565         return mode;
1566 }
1567
1568 static int omapfb_parse_vram_param(const char *param, int max_entries,
1569                 unsigned long *sizes, unsigned long *paddrs)
1570 {
1571         int fbnum;
1572         unsigned long size;
1573         unsigned long paddr = 0;
1574         char *p, *start;
1575
1576         start = (char *)param;
1577
1578         while (1) {
1579                 p = start;
1580
1581                 fbnum = simple_strtoul(p, &p, 10);
1582
1583                 if (p == param)
1584                         return -EINVAL;
1585
1586                 if (*p != ':')
1587                         return -EINVAL;
1588
1589                 if (fbnum >= max_entries)
1590                         return -EINVAL;
1591
1592                 size = memparse(p + 1, &p);
1593
1594                 if (!size)
1595                         return -EINVAL;
1596
1597                 paddr = 0;
1598
1599                 if (*p == '@') {
1600                         paddr = simple_strtoul(p + 1, &p, 16);
1601
1602                         if (!paddr)
1603                                 return -EINVAL;
1604
1605                 }
1606
1607                 paddrs[fbnum] = paddr;
1608                 sizes[fbnum] = size;
1609
1610                 if (*p == 0)
1611                         break;
1612
1613                 if (*p != ',')
1614                         return -EINVAL;
1615
1616                 ++p;
1617
1618                 start = p;
1619         }
1620
1621         return 0;
1622 }
1623
1624 static int omapfb_allocate_all_fbs(struct omapfb2_device *fbdev)
1625 {
1626         int i, r;
1627         unsigned long vram_sizes[10];
1628         unsigned long vram_paddrs[10];
1629
1630         memset(&vram_sizes, 0, sizeof(vram_sizes));
1631         memset(&vram_paddrs, 0, sizeof(vram_paddrs));
1632
1633         if (def_vram && omapfb_parse_vram_param(def_vram, 10,
1634                                 vram_sizes, vram_paddrs)) {
1635                 dev_err(fbdev->dev, "failed to parse vram parameter\n");
1636
1637                 memset(&vram_sizes, 0, sizeof(vram_sizes));
1638                 memset(&vram_paddrs, 0, sizeof(vram_paddrs));
1639         }
1640
1641         if (fbdev->dev->platform_data) {
1642                 struct omapfb_platform_data *opd;
1643                 opd = fbdev->dev->platform_data;
1644                 for (i = 0; i < opd->mem_desc.region_cnt; ++i) {
1645                         if (!vram_sizes[i]) {
1646                                 unsigned long size;
1647                                 unsigned long paddr;
1648
1649                                 size = opd->mem_desc.region[i].size;
1650                                 paddr = opd->mem_desc.region[i].paddr;
1651
1652                                 vram_sizes[i] = size;
1653                                 vram_paddrs[i] = paddr;
1654                         }
1655                 }
1656         }
1657
1658         for (i = 0; i < fbdev->num_fbs; i++) {
1659                 /* allocate memory automatically only for fb0, or if
1660                  * excplicitly defined with vram or plat data option */
1661                 if (i == 0 || vram_sizes[i] != 0) {
1662                         r = omapfb_alloc_fbmem_display(fbdev->fbs[i],
1663                                         vram_sizes[i], vram_paddrs[i]);
1664
1665                         if (r)
1666                                 return r;
1667                 }
1668         }
1669
1670         for (i = 0; i < fbdev->num_fbs; i++) {
1671                 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[i]);
1672                 struct omapfb2_mem_region *rg;
1673                 rg = ofbi->region;
1674
1675                 DBG("region%d phys %08x virt %p size=%lu\n",
1676                                 i,
1677                                 rg->paddr,
1678                                 rg->vaddr,
1679                                 rg->size);
1680         }
1681
1682         return 0;
1683 }
1684
1685 int omapfb_realloc_fbmem(struct fb_info *fbi, unsigned long size, int type)
1686 {
1687         struct omapfb_info *ofbi = FB2OFB(fbi);
1688         struct omapfb2_device *fbdev = ofbi->fbdev;
1689         struct omap_dss_device *display = fb2display(fbi);
1690         struct omapfb2_mem_region *rg = ofbi->region;
1691         unsigned long old_size = rg->size;
1692         unsigned long old_paddr = rg->paddr;
1693         int old_type = rg->type;
1694         int r;
1695
1696         if (type > OMAPFB_MEMTYPE_MAX)
1697                 return -EINVAL;
1698
1699         size = PAGE_ALIGN(size);
1700
1701         if (old_size == size && old_type == type)
1702                 return 0;
1703
1704         if (display && display->driver->sync)
1705                         display->driver->sync(display);
1706
1707         omapfb_free_fbmem(fbi);
1708
1709         if (size == 0) {
1710                 clear_fb_info(fbi);
1711                 return 0;
1712         }
1713
1714         r = omapfb_alloc_fbmem(fbi, size, 0);
1715
1716         if (r) {
1717                 if (old_size)
1718                         omapfb_alloc_fbmem(fbi, old_size, old_paddr);
1719
1720                 if (rg->size == 0)
1721                         clear_fb_info(fbi);
1722
1723                 return r;
1724         }
1725
1726         if (old_size == size)
1727                 return 0;
1728
1729         if (old_size == 0) {
1730                 DBG("initializing fb %d\n", ofbi->id);
1731                 r = omapfb_fb_init(fbdev, fbi);
1732                 if (r) {
1733                         DBG("omapfb_fb_init failed\n");
1734                         goto err;
1735                 }
1736                 r = omapfb_apply_changes(fbi, 1);
1737                 if (r) {
1738                         DBG("omapfb_apply_changes failed\n");
1739                         goto err;
1740                 }
1741         } else {
1742                 struct fb_var_screeninfo new_var;
1743                 memcpy(&new_var, &fbi->var, sizeof(new_var));
1744                 r = check_fb_var(fbi, &new_var);
1745                 if (r)
1746                         goto err;
1747                 memcpy(&fbi->var, &new_var, sizeof(fbi->var));
1748                 set_fb_fix(fbi);
1749                 r = setup_vrfb_rotation(fbi);
1750                 if (r)
1751                         goto err;
1752         }
1753
1754         return 0;
1755 err:
1756         omapfb_free_fbmem(fbi);
1757         clear_fb_info(fbi);
1758         return r;
1759 }
1760
1761 /* initialize fb_info, var, fix to something sane based on the display */
1762 static int omapfb_fb_init(struct omapfb2_device *fbdev, struct fb_info *fbi)
1763 {
1764         struct fb_var_screeninfo *var = &fbi->var;
1765         struct omap_dss_device *display = fb2display(fbi);
1766         struct omapfb_info *ofbi = FB2OFB(fbi);
1767         int r = 0;
1768
1769         fbi->fbops = &omapfb_ops;
1770         fbi->flags = FBINFO_FLAG_DEFAULT;
1771         fbi->pseudo_palette = fbdev->pseudo_palette;
1772
1773         if (ofbi->region->size == 0) {
1774                 clear_fb_info(fbi);
1775                 return 0;
1776         }
1777
1778         var->nonstd = 0;
1779         var->bits_per_pixel = 0;
1780
1781         var->rotate = def_rotate;
1782
1783         /*
1784          * Check if there is a default color format set in the board file,
1785          * and use this format instead the default deducted from the
1786          * display bpp.
1787          */
1788         if (fbdev->dev->platform_data) {
1789                 struct omapfb_platform_data *opd;
1790                 int id = ofbi->id;
1791
1792                 opd = fbdev->dev->platform_data;
1793                 if (opd->mem_desc.region[id].format_used) {
1794                         enum omap_color_mode mode;
1795                         enum omapfb_color_format format;
1796
1797                         format = opd->mem_desc.region[id].format;
1798                         mode = fb_format_to_dss_mode(format);
1799                         if (mode < 0) {
1800                                 r = mode;
1801                                 goto err;
1802                         }
1803                         r = dss_mode_to_fb_mode(mode, var);
1804                         if (r < 0)
1805                                 goto err;
1806                 }
1807         }
1808
1809         if (display) {
1810                 u16 w, h;
1811                 int rotation = (var->rotate + ofbi->rotation[0]) % 4;
1812
1813                 display->driver->get_resolution(display, &w, &h);
1814
1815                 if (rotation == FB_ROTATE_CW ||
1816                                 rotation == FB_ROTATE_CCW) {
1817                         var->xres = h;
1818                         var->yres = w;
1819                 } else {
1820                         var->xres = w;
1821                         var->yres = h;
1822                 }
1823
1824                 var->xres_virtual = var->xres;
1825                 var->yres_virtual = var->yres;
1826
1827                 if (!var->bits_per_pixel) {
1828                         switch (omapfb_get_recommended_bpp(fbdev, display)) {
1829                         case 16:
1830                                 var->bits_per_pixel = 16;
1831                                 break;
1832                         case 24:
1833                                 var->bits_per_pixel = 32;
1834                                 break;
1835                         default:
1836                                 dev_err(fbdev->dev, "illegal display "
1837                                                 "bpp\n");
1838                                 return -EINVAL;
1839                         }
1840                 }
1841         } else {
1842                 /* if there's no display, let's just guess some basic values */
1843                 var->xres = 320;
1844                 var->yres = 240;
1845                 var->xres_virtual = var->xres;
1846                 var->yres_virtual = var->yres;
1847                 if (!var->bits_per_pixel)
1848                         var->bits_per_pixel = 16;
1849         }
1850
1851         r = check_fb_var(fbi, var);
1852         if (r)
1853                 goto err;
1854
1855         set_fb_fix(fbi);
1856         r = setup_vrfb_rotation(fbi);
1857         if (r)
1858                 goto err;
1859
1860         r = fb_alloc_cmap(&fbi->cmap, 256, 0);
1861         if (r)
1862                 dev_err(fbdev->dev, "unable to allocate color map memory\n");
1863
1864 err:
1865         return r;
1866 }
1867
1868 static void fbinfo_cleanup(struct omapfb2_device *fbdev, struct fb_info *fbi)
1869 {
1870         fb_dealloc_cmap(&fbi->cmap);
1871 }
1872
1873
1874 static void omapfb_free_resources(struct omapfb2_device *fbdev)
1875 {
1876         int i;
1877
1878         DBG("free_resources\n");
1879
1880         if (fbdev == NULL)
1881                 return;
1882
1883         for (i = 0; i < fbdev->num_fbs; i++)
1884                 unregister_framebuffer(fbdev->fbs[i]);
1885
1886         /* free the reserved fbmem */
1887         omapfb_free_all_fbmem(fbdev);
1888
1889         for (i = 0; i < fbdev->num_fbs; i++) {
1890                 fbinfo_cleanup(fbdev, fbdev->fbs[i]);
1891                 framebuffer_release(fbdev->fbs[i]);
1892         }
1893
1894         for (i = 0; i < fbdev->num_displays; i++) {
1895                 if (fbdev->displays[i]->state != OMAP_DSS_DISPLAY_DISABLED)
1896                         fbdev->displays[i]->driver->disable(fbdev->displays[i]);
1897
1898                 omap_dss_put_device(fbdev->displays[i]);
1899         }
1900
1901         dev_set_drvdata(fbdev->dev, NULL);
1902         kfree(fbdev);
1903 }
1904
1905 static int omapfb_create_framebuffers(struct omapfb2_device *fbdev)
1906 {
1907         int r, i;
1908
1909         fbdev->num_fbs = 0;
1910
1911         DBG("create %d framebuffers\n", CONFIG_FB_OMAP2_NUM_FBS);
1912
1913         /* allocate fb_infos */
1914         for (i = 0; i < CONFIG_FB_OMAP2_NUM_FBS; i++) {
1915                 struct fb_info *fbi;
1916                 struct omapfb_info *ofbi;
1917
1918                 fbi = framebuffer_alloc(sizeof(struct omapfb_info),
1919                                 fbdev->dev);
1920
1921                 if (fbi == NULL) {
1922                         dev_err(fbdev->dev,
1923                                 "unable to allocate memory for plane info\n");
1924                         return -ENOMEM;
1925                 }
1926
1927                 clear_fb_info(fbi);
1928
1929                 fbdev->fbs[i] = fbi;
1930
1931                 ofbi = FB2OFB(fbi);
1932                 ofbi->fbdev = fbdev;
1933                 ofbi->id = i;
1934
1935                 ofbi->region = &fbdev->regions[i];
1936                 ofbi->region->id = i;
1937                 init_rwsem(&ofbi->region->lock);
1938
1939                 /* assign these early, so that fb alloc can use them */
1940                 ofbi->rotation_type = def_vrfb ? OMAP_DSS_ROT_VRFB :
1941                         OMAP_DSS_ROT_DMA;
1942                 ofbi->mirror = def_mirror;
1943
1944                 fbdev->num_fbs++;
1945         }
1946
1947         DBG("fb_infos allocated\n");
1948
1949         /* assign overlays for the fbs */
1950         for (i = 0; i < min(fbdev->num_fbs, fbdev->num_overlays); i++) {
1951                 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[i]);
1952
1953                 ofbi->overlays[0] = fbdev->overlays[i];
1954                 ofbi->num_overlays = 1;
1955         }
1956
1957         /* allocate fb memories */
1958         r = omapfb_allocate_all_fbs(fbdev);
1959         if (r) {
1960                 dev_err(fbdev->dev, "failed to allocate fbmem\n");
1961                 return r;
1962         }
1963
1964         DBG("fbmems allocated\n");
1965
1966         /* setup fb_infos */
1967         for (i = 0; i < fbdev->num_fbs; i++) {
1968                 struct fb_info *fbi = fbdev->fbs[i];
1969                 struct omapfb_info *ofbi = FB2OFB(fbi);
1970
1971                 omapfb_get_mem_region(ofbi->region);
1972                 r = omapfb_fb_init(fbdev, fbi);
1973                 omapfb_put_mem_region(ofbi->region);
1974
1975                 if (r) {
1976                         dev_err(fbdev->dev, "failed to setup fb_info\n");
1977                         return r;
1978                 }
1979         }
1980
1981         DBG("fb_infos initialized\n");
1982
1983         for (i = 0; i < fbdev->num_fbs; i++) {
1984                 r = register_framebuffer(fbdev->fbs[i]);
1985                 if (r != 0) {
1986                         dev_err(fbdev->dev,
1987                                 "registering framebuffer %d failed\n", i);
1988                         return r;
1989                 }
1990         }
1991
1992         DBG("framebuffers registered\n");
1993
1994         for (i = 0; i < fbdev->num_fbs; i++) {
1995                 struct fb_info *fbi = fbdev->fbs[i];
1996                 struct omapfb_info *ofbi = FB2OFB(fbi);
1997
1998                 omapfb_get_mem_region(ofbi->region);
1999                 r = omapfb_apply_changes(fbi, 1);
2000                 omapfb_put_mem_region(ofbi->region);
2001
2002                 if (r) {
2003                         dev_err(fbdev->dev, "failed to change mode\n");
2004                         return r;
2005                 }
2006         }
2007
2008         /* Enable fb0 */
2009         if (fbdev->num_fbs > 0) {
2010                 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[0]);
2011
2012                 if (ofbi->num_overlays > 0) {
2013                         struct omap_overlay *ovl = ofbi->overlays[0];
2014
2015                         r = omapfb_overlay_enable(ovl, 1);
2016
2017                         if (r) {
2018                                 dev_err(fbdev->dev,
2019                                                 "failed to enable overlay\n");
2020                                 return r;
2021                         }
2022                 }
2023         }
2024
2025         DBG("create_framebuffers done\n");
2026
2027         return 0;
2028 }
2029
2030 static int omapfb_mode_to_timings(const char *mode_str,
2031                 struct omap_video_timings *timings, u8 *bpp)
2032 {
2033         struct fb_info fbi;
2034         struct fb_var_screeninfo var;
2035         struct fb_ops fbops;
2036         int r;
2037
2038 #ifdef CONFIG_OMAP2_DSS_VENC
2039         if (strcmp(mode_str, "pal") == 0) {
2040                 *timings = omap_dss_pal_timings;
2041                 *bpp = 24;
2042                 return 0;
2043         } else if (strcmp(mode_str, "ntsc") == 0) {
2044                 *timings = omap_dss_ntsc_timings;
2045                 *bpp = 24;
2046                 return 0;
2047         }
2048 #endif
2049
2050         /* this is quite a hack, but I wanted to use the modedb and for
2051          * that we need fb_info and var, so we create dummy ones */
2052
2053         memset(&fbi, 0, sizeof(fbi));
2054         memset(&var, 0, sizeof(var));
2055         memset(&fbops, 0, sizeof(fbops));
2056         fbi.fbops = &fbops;
2057
2058         r = fb_find_mode(&var, &fbi, mode_str, NULL, 0, NULL, 24);
2059
2060         if (r != 0) {
2061                 timings->pixel_clock = PICOS2KHZ(var.pixclock);
2062                 timings->hbp = var.left_margin;
2063                 timings->hfp = var.right_margin;
2064                 timings->vbp = var.upper_margin;
2065                 timings->vfp = var.lower_margin;
2066                 timings->hsw = var.hsync_len;
2067                 timings->vsw = var.vsync_len;
2068                 timings->x_res = var.xres;
2069                 timings->y_res = var.yres;
2070
2071                 switch (var.bits_per_pixel) {
2072                 case 16:
2073                         *bpp = 16;
2074                         break;
2075                 case 24:
2076                 case 32:
2077                 default:
2078                         *bpp = 24;
2079                         break;
2080                 }
2081
2082                 return 0;
2083         } else {
2084                 return -EINVAL;
2085         }
2086 }
2087
2088 static int omapfb_set_def_mode(struct omapfb2_device *fbdev,
2089                 struct omap_dss_device *display, char *mode_str)
2090 {
2091         int r;
2092         u8 bpp;
2093         struct omap_video_timings timings;
2094
2095         r = omapfb_mode_to_timings(mode_str, &timings, &bpp);
2096         if (r)
2097                 return r;
2098
2099         fbdev->bpp_overrides[fbdev->num_bpp_overrides].dssdev = display;
2100         fbdev->bpp_overrides[fbdev->num_bpp_overrides].bpp = bpp;
2101         ++fbdev->num_bpp_overrides;
2102
2103         if (!display->driver->check_timings || !display->driver->set_timings)
2104                 return -EINVAL;
2105
2106         r = display->driver->check_timings(display, &timings);
2107         if (r)
2108                 return r;
2109
2110         display->driver->set_timings(display, &timings);
2111
2112         return 0;
2113 }
2114
2115 static int omapfb_get_recommended_bpp(struct omapfb2_device *fbdev,
2116                 struct omap_dss_device *dssdev)
2117 {
2118         int i;
2119
2120         BUG_ON(dssdev->driver->get_recommended_bpp == NULL);
2121
2122         for (i = 0; i < fbdev->num_bpp_overrides; ++i) {
2123                 if (dssdev == fbdev->bpp_overrides[i].dssdev)
2124                         return fbdev->bpp_overrides[i].bpp;
2125         }
2126
2127         return dssdev->driver->get_recommended_bpp(dssdev);
2128 }
2129
2130 static int omapfb_parse_def_modes(struct omapfb2_device *fbdev)
2131 {
2132         char *str, *options, *this_opt;
2133         int r = 0;
2134
2135         str = kstrdup(def_mode, GFP_KERNEL);
2136         if (!str)
2137                 return -ENOMEM;
2138         options = str;
2139
2140         while (!r && (this_opt = strsep(&options, ",")) != NULL) {
2141                 char *p, *display_str, *mode_str;
2142                 struct omap_dss_device *display;
2143                 int i;
2144
2145                 p = strchr(this_opt, ':');
2146                 if (!p) {
2147                         r = -EINVAL;
2148                         break;
2149                 }
2150
2151                 *p = 0;
2152                 display_str = this_opt;
2153                 mode_str = p + 1;
2154
2155                 display = NULL;
2156                 for (i = 0; i < fbdev->num_displays; ++i) {
2157                         if (strcmp(fbdev->displays[i]->name,
2158                                                 display_str) == 0) {
2159                                 display = fbdev->displays[i];
2160                                 break;
2161                         }
2162                 }
2163
2164                 if (!display) {
2165                         r = -EINVAL;
2166                         break;
2167                 }
2168
2169                 r = omapfb_set_def_mode(fbdev, display, mode_str);
2170                 if (r)
2171                         break;
2172         }
2173
2174         kfree(str);
2175
2176         return r;
2177 }
2178
2179 static int omapfb_probe(struct platform_device *pdev)
2180 {
2181         struct omapfb2_device *fbdev = NULL;
2182         int r = 0;
2183         int i;
2184         struct omap_overlay *ovl;
2185         struct omap_dss_device *def_display;
2186         struct omap_dss_device *dssdev;
2187
2188         DBG("omapfb_probe\n");
2189
2190         if (pdev->num_resources != 0) {
2191                 dev_err(&pdev->dev, "probed for an unknown device\n");
2192                 r = -ENODEV;
2193                 goto err0;
2194         }
2195
2196         fbdev = kzalloc(sizeof(struct omapfb2_device), GFP_KERNEL);
2197         if (fbdev == NULL) {
2198                 r = -ENOMEM;
2199                 goto err0;
2200         }
2201
2202         /* TODO : Replace cpu check with omap_has_vrfb once HAS_FEATURE
2203         *        available for OMAP2 and OMAP3
2204         */
2205         if (def_vrfb && !cpu_is_omap24xx() && !cpu_is_omap34xx()) {
2206                 def_vrfb = 0;
2207                 dev_warn(&pdev->dev, "VRFB is not supported on this hardware, "
2208                                 "ignoring the module parameter vrfb=y\n");
2209         }
2210
2211
2212         mutex_init(&fbdev->mtx);
2213
2214         fbdev->dev = &pdev->dev;
2215         platform_set_drvdata(pdev, fbdev);
2216
2217         r = 0;
2218         fbdev->num_displays = 0;
2219         dssdev = NULL;
2220         for_each_dss_dev(dssdev) {
2221                 omap_dss_get_device(dssdev);
2222
2223                 if (!dssdev->driver) {
2224                         dev_err(&pdev->dev, "no driver for display\n");
2225                         r = -ENODEV;
2226                 }
2227
2228                 fbdev->displays[fbdev->num_displays++] = dssdev;
2229         }
2230
2231         if (r)
2232                 goto cleanup;
2233
2234         if (fbdev->num_displays == 0) {
2235                 dev_err(&pdev->dev, "no displays\n");
2236                 r = -EINVAL;
2237                 goto cleanup;
2238         }
2239
2240         fbdev->num_overlays = omap_dss_get_num_overlays();
2241         for (i = 0; i < fbdev->num_overlays; i++)
2242                 fbdev->overlays[i] = omap_dss_get_overlay(i);
2243
2244         fbdev->num_managers = omap_dss_get_num_overlay_managers();
2245         for (i = 0; i < fbdev->num_managers; i++)
2246                 fbdev->managers[i] = omap_dss_get_overlay_manager(i);
2247
2248         if (def_mode && strlen(def_mode) > 0) {
2249                 if (omapfb_parse_def_modes(fbdev))
2250                         dev_warn(&pdev->dev, "cannot parse default modes\n");
2251         }
2252
2253         r = omapfb_create_framebuffers(fbdev);
2254         if (r)
2255                 goto cleanup;
2256
2257         for (i = 0; i < fbdev->num_managers; i++) {
2258                 struct omap_overlay_manager *mgr;
2259                 mgr = fbdev->managers[i];
2260                 r = mgr->apply(mgr);
2261                 if (r)
2262                         dev_warn(fbdev->dev, "failed to apply dispc config\n");
2263         }
2264
2265         DBG("mgr->apply'ed\n");
2266
2267         /* gfx overlay should be the default one. find a display
2268          * connected to that, and use it as default display */
2269         ovl = omap_dss_get_overlay(0);
2270         if (ovl->manager && ovl->manager->device) {
2271                 def_display = ovl->manager->device;
2272         } else {
2273                 dev_warn(&pdev->dev, "cannot find default display\n");
2274                 def_display = NULL;
2275         }
2276
2277         if (def_display) {
2278                 struct omap_dss_driver *dssdrv = def_display->driver;
2279
2280                 r = def_display->driver->enable(def_display);
2281                 if (r) {
2282                         dev_warn(fbdev->dev, "Failed to enable display '%s'\n",
2283                                         def_display->name);
2284                         goto cleanup;
2285                 }
2286
2287                 if (def_display->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) {
2288                         u16 w, h;
2289                         if (dssdrv->enable_te)
2290                                 dssdrv->enable_te(def_display, 1);
2291                         if (dssdrv->set_update_mode)
2292                                 dssdrv->set_update_mode(def_display,
2293                                                 OMAP_DSS_UPDATE_MANUAL);
2294
2295                         dssdrv->get_resolution(def_display, &w, &h);
2296                         def_display->driver->update(def_display, 0, 0, w, h);
2297                 } else {
2298                         if (dssdrv->set_update_mode)
2299                                 dssdrv->set_update_mode(def_display,
2300                                                 OMAP_DSS_UPDATE_AUTO);
2301                 }
2302         }
2303
2304         DBG("create sysfs for fbs\n");
2305         r = omapfb_create_sysfs(fbdev);
2306         if (r) {
2307                 dev_err(fbdev->dev, "failed to create sysfs entries\n");
2308                 goto cleanup;
2309         }
2310
2311         return 0;
2312
2313 cleanup:
2314         omapfb_free_resources(fbdev);
2315 err0:
2316         dev_err(&pdev->dev, "failed to setup omapfb\n");
2317         return r;
2318 }
2319
2320 static int omapfb_remove(struct platform_device *pdev)
2321 {
2322         struct omapfb2_device *fbdev = platform_get_drvdata(pdev);
2323
2324         /* FIXME: wait till completion of pending events */
2325
2326         omapfb_remove_sysfs(fbdev);
2327
2328         omapfb_free_resources(fbdev);
2329
2330         return 0;
2331 }
2332
2333 static struct platform_driver omapfb_driver = {
2334         .probe          = omapfb_probe,
2335         .remove         = omapfb_remove,
2336         .driver         = {
2337                 .name   = "omapfb",
2338                 .owner  = THIS_MODULE,
2339         },
2340 };
2341
2342 static int __init omapfb_init(void)
2343 {
2344         DBG("omapfb_init\n");
2345
2346         if (platform_driver_register(&omapfb_driver)) {
2347                 printk(KERN_ERR "failed to register omapfb driver\n");
2348                 return -ENODEV;
2349         }
2350
2351         return 0;
2352 }
2353
2354 static void __exit omapfb_exit(void)
2355 {
2356         DBG("omapfb_exit\n");
2357         platform_driver_unregister(&omapfb_driver);
2358 }
2359
2360 module_param_named(mode, def_mode, charp, 0);
2361 module_param_named(vram, def_vram, charp, 0);
2362 module_param_named(rotate, def_rotate, int, 0);
2363 module_param_named(vrfb, def_vrfb, bool, 0);
2364 module_param_named(mirror, def_mirror, bool, 0);
2365
2366 /* late_initcall to let panel/ctrl drivers loaded first.
2367  * I guess better option would be a more dynamic approach,
2368  * so that omapfb reacts to new panels when they are loaded */
2369 late_initcall(omapfb_init);
2370 /*module_init(omapfb_init);*/
2371 module_exit(omapfb_exit);
2372
2373 MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@nokia.com>");
2374 MODULE_DESCRIPTION("OMAP2/3 Framebuffer");
2375 MODULE_LICENSE("GPL v2");