release/src-rt-6.x.4708/linux/linux-2.6.36/drivers/video/omap2/omapfb/omapfb-ioctl.c

   1 /*
   2  * linux/drivers/video/omap2/omapfb-ioctl.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/fb.h>
  24 #include <linux/device.h>
  25 #include <linux/uaccess.h>
  26 #include <linux/platform_device.h>
  27 #include <linux/mm.h>
  28 #include <linux/omapfb.h>
  29 #include <linux/vmalloc.h>
  30
  31 #include <plat/display.h>
  32 #include <plat/vrfb.h>
  33 #include <plat/vram.h>
  34
  35 #include "omapfb.h"
  36
  37 static u8 get_mem_idx(struct omapfb_info *ofbi)
  38 {
  39         if (ofbi->id == ofbi->region->id)
  40                 return 0;
  41
  42         return OMAPFB_MEM_IDX_ENABLED | ofbi->region->id;
  43 }
  44
  45 static struct omapfb2_mem_region *get_mem_region(struct omapfb_info *ofbi,
  46                                                  u8 mem_idx)
  47 {
  48         struct omapfb2_device *fbdev = ofbi->fbdev;
  49
  50         if (mem_idx & OMAPFB_MEM_IDX_ENABLED)
  51                 mem_idx &= OMAPFB_MEM_IDX_MASK;
  52         else
  53                 mem_idx = ofbi->id;
  54
  55         if (mem_idx >= fbdev->num_fbs)
  56                 return NULL;
  57
  58         return &fbdev->regions[mem_idx];
  59 }
  60
  61 static int omapfb_setup_plane(struct fb_info *fbi, struct omapfb_plane_info *pi)
  62 {
  63         struct omapfb_info *ofbi = FB2OFB(fbi);
  64         struct omapfb2_device *fbdev = ofbi->fbdev;
  65         struct omap_overlay *ovl;
  66         struct omap_overlay_info old_info;
  67         struct omapfb2_mem_region *old_rg, *new_rg;
  68         int r = 0;
  69
  70         DBG("omapfb_setup_plane\n");
  71
  72         if (ofbi->num_overlays != 1) {
  73                 r = -EINVAL;
  74                 goto out;
  75         }
  76
  77         ovl = ofbi->overlays[0];
  78
  79         old_rg = ofbi->region;
  80         new_rg = get_mem_region(ofbi, pi->mem_idx);
  81         if (!new_rg) {
  82                 r = -EINVAL;
  83                 goto out;
  84         }
  85
  86         /* Take the locks in a specific order to keep lockdep happy */
  87         if (old_rg->id < new_rg->id) {
  88                 omapfb_get_mem_region(old_rg);
  89                 omapfb_get_mem_region(new_rg);
  90         } else if (new_rg->id < old_rg->id) {
  91                 omapfb_get_mem_region(new_rg);
  92                 omapfb_get_mem_region(old_rg);
  93         } else
  94                 omapfb_get_mem_region(old_rg);
  95
  96         if (pi->enabled && !new_rg->size) {
  97                 /*
  98                  * This plane's memory was freed, can't enable it
  99                  * until it's reallocated.
 100                  */
 101                 r = -EINVAL;
 102                 goto put_mem;
 103         }
 104
 105         ovl->get_overlay_info(ovl, &old_info);
 106
 107         if (old_rg != new_rg) {
 108                 ofbi->region = new_rg;
 109                 set_fb_fix(fbi);
 110         }
 111
 112         if (pi->enabled) {
 113                 struct omap_overlay_info info;
 114
 115                 r = omapfb_setup_overlay(fbi, ovl, pi->pos_x, pi->pos_y,
 116                         pi->out_width, pi->out_height);
 117                 if (r)
 118                         goto undo;
 119
 120                 ovl->get_overlay_info(ovl, &info);
 121
 122                 if (!info.enabled) {
 123                         info.enabled = pi->enabled;
 124                         r = ovl->set_overlay_info(ovl, &info);
 125                         if (r)
 126                                 goto undo;
 127                 }
 128         } else {
 129                 struct omap_overlay_info info;
 130
 131                 ovl->get_overlay_info(ovl, &info);
 132
 133                 info.enabled = pi->enabled;
 134                 info.pos_x = pi->pos_x;
 135                 info.pos_y = pi->pos_y;
 136                 info.out_width = pi->out_width;
 137                 info.out_height = pi->out_height;
 138
 139                 r = ovl->set_overlay_info(ovl, &info);
 140                 if (r)
 141                         goto undo;
 142         }
 143
 144         if (ovl->manager)
 145                 ovl->manager->apply(ovl->manager);
 146
 147         /* Release the locks in a specific order to keep lockdep happy */
 148         if (old_rg->id > new_rg->id) {
 149                 omapfb_put_mem_region(old_rg);
 150                 omapfb_put_mem_region(new_rg);
 151         } else if (new_rg->id > old_rg->id) {
 152                 omapfb_put_mem_region(new_rg);
 153                 omapfb_put_mem_region(old_rg);
 154         } else
 155                 omapfb_put_mem_region(old_rg);
 156
 157         return 0;
 158
 159  undo:
 160         if (old_rg != new_rg) {
 161                 ofbi->region = old_rg;
 162                 set_fb_fix(fbi);
 163         }
 164
 165         ovl->set_overlay_info(ovl, &old_info);
 166  put_mem:
 167         /* Release the locks in a specific order to keep lockdep happy */
 168         if (old_rg->id > new_rg->id) {
 169                 omapfb_put_mem_region(old_rg);
 170                 omapfb_put_mem_region(new_rg);
 171         } else if (new_rg->id > old_rg->id) {
 172                 omapfb_put_mem_region(new_rg);
 173                 omapfb_put_mem_region(old_rg);
 174         } else
 175                 omapfb_put_mem_region(old_rg);
 176  out:
 177         dev_err(fbdev->dev, "setup_plane failed\n");
 178
 179         return r;
 180 }
 181
 182 static int omapfb_query_plane(struct fb_info *fbi, struct omapfb_plane_info *pi)
 183 {
 184         struct omapfb_info *ofbi = FB2OFB(fbi);
 185
 186         if (ofbi->num_overlays != 1) {
 187                 memset(pi, 0, sizeof(*pi));
 188         } else {
 189                 struct omap_overlay *ovl;
 190                 struct omap_overlay_info *ovli;
 191
 192                 ovl = ofbi->overlays[0];
 193                 ovli = &ovl->info;
 194
 195                 pi->pos_x = ovli->pos_x;
 196                 pi->pos_y = ovli->pos_y;
 197                 pi->enabled = ovli->enabled;
 198                 pi->channel_out = 0;
 199                 pi->mirror = 0;
 200                 pi->mem_idx = get_mem_idx(ofbi);
 201                 pi->out_width = ovli->out_width;
 202                 pi->out_height = ovli->out_height;
 203         }
 204
 205         return 0;
 206 }
 207
 208 static int omapfb_setup_mem(struct fb_info *fbi, struct omapfb_mem_info *mi)
 209 {
 210         struct omapfb_info *ofbi = FB2OFB(fbi);
 211         struct omapfb2_device *fbdev = ofbi->fbdev;
 212         struct omapfb2_mem_region *rg;
 213         int r = 0, i;
 214         size_t size;
 215
 216         if (mi->type > OMAPFB_MEMTYPE_MAX)
 217                 return -EINVAL;
 218
 219         size = PAGE_ALIGN(mi->size);
 220
 221         rg = ofbi->region;
 222
 223         down_write_nested(&rg->lock, rg->id);
 224         atomic_inc(&rg->lock_count);
 225
 226         if (atomic_read(&rg->map_count)) {
 227                 r = -EBUSY;
 228                 goto out;
 229         }
 230
 231         for (i = 0; i < fbdev->num_fbs; i++) {
 232                 struct omapfb_info *ofbi2 = FB2OFB(fbdev->fbs[i]);
 233                 int j;
 234
 235                 if (ofbi2->region != rg)
 236                         continue;
 237
 238                 for (j = 0; j < ofbi2->num_overlays; j++) {
 239                         if (ofbi2->overlays[j]->info.enabled) {
 240                                 r = -EBUSY;
 241                                 goto out;
 242                         }
 243                 }
 244         }
 245
 246         if (rg->size != size || rg->type != mi->type) {
 247                 r = omapfb_realloc_fbmem(fbi, size, mi->type);
 248                 if (r) {
 249                         dev_err(fbdev->dev, "realloc fbmem failed\n");
 250                         goto out;
 251                 }
 252         }
 253
 254  out:
 255         atomic_dec(&rg->lock_count);
 256         up_write(&rg->lock);
 257
 258         return r;
 259 }
 260
 261 static int omapfb_query_mem(struct fb_info *fbi, struct omapfb_mem_info *mi)
 262 {
 263         struct omapfb_info *ofbi = FB2OFB(fbi);
 264         struct omapfb2_mem_region *rg;
 265
 266         rg = omapfb_get_mem_region(ofbi->region);
 267         memset(mi, 0, sizeof(*mi));
 268
 269         mi->size = rg->size;
 270         mi->type = rg->type;
 271
 272         omapfb_put_mem_region(rg);
 273
 274         return 0;
 275 }
 276
 277 static int omapfb_update_window_nolock(struct fb_info *fbi,
 278                 u32 x, u32 y, u32 w, u32 h)
 279 {
 280         struct omap_dss_device *display = fb2display(fbi);
 281         u16 dw, dh;
 282
 283         if (!display)
 284                 return 0;
 285
 286         if (w == 0 || h == 0)
 287                 return 0;
 288
 289         display->driver->get_resolution(display, &dw, &dh);
 290
 291         if (x + w > dw || y + h > dh)
 292                 return -EINVAL;
 293
 294         return display->driver->update(display, x, y, w, h);
 295 }
 296
 297 /* This function is exported for SGX driver use */
 298 int omapfb_update_window(struct fb_info *fbi,
 299                 u32 x, u32 y, u32 w, u32 h)
 300 {
 301         struct omapfb_info *ofbi = FB2OFB(fbi);
 302         struct omapfb2_device *fbdev = ofbi->fbdev;
 303         int r;
 304
 305         if (!lock_fb_info(fbi))
 306                 return -ENODEV;
 307         omapfb_lock(fbdev);
 308
 309         r = omapfb_update_window_nolock(fbi, x, y, w, h);
 310
 311         omapfb_unlock(fbdev);
 312         unlock_fb_info(fbi);
 313
 314         return r;
 315 }
 316 EXPORT_SYMBOL(omapfb_update_window);
 317
 318 static int omapfb_set_update_mode(struct fb_info *fbi,
 319                                    enum omapfb_update_mode mode)
 320 {
 321         struct omap_dss_device *display = fb2display(fbi);
 322         enum omap_dss_update_mode um;
 323         int r;
 324
 325         if (!display || !display->driver->set_update_mode)
 326                 return -EINVAL;
 327
 328         switch (mode) {
 329         case OMAPFB_UPDATE_DISABLED:
 330                 um = OMAP_DSS_UPDATE_DISABLED;
 331                 break;
 332
 333         case OMAPFB_AUTO_UPDATE:
 334                 um = OMAP_DSS_UPDATE_AUTO;
 335                 break;
 336
 337         case OMAPFB_MANUAL_UPDATE:
 338                 um = OMAP_DSS_UPDATE_MANUAL;
 339                 break;
 340
 341         default:
 342                 return -EINVAL;
 343         }
 344
 345         r = display->driver->set_update_mode(display, um);
 346
 347         return r;
 348 }
 349
 350 static int omapfb_get_update_mode(struct fb_info *fbi,
 351                 enum omapfb_update_mode *mode)
 352 {
 353         struct omap_dss_device *display = fb2display(fbi);
 354         enum omap_dss_update_mode m;
 355
 356         if (!display)
 357                 return -EINVAL;
 358
 359         if (!display->driver->get_update_mode) {
 360                 *mode = OMAPFB_AUTO_UPDATE;
 361                 return 0;
 362         }
 363
 364         m = display->driver->get_update_mode(display);
 365
 366         switch (m) {
 367         case OMAP_DSS_UPDATE_DISABLED:
 368                 *mode = OMAPFB_UPDATE_DISABLED;
 369                 break;
 370         case OMAP_DSS_UPDATE_AUTO:
 371                 *mode = OMAPFB_AUTO_UPDATE;
 372                 break;
 373         case OMAP_DSS_UPDATE_MANUAL:
 374                 *mode = OMAPFB_MANUAL_UPDATE;
 375                 break;
 376         default:
 377                 BUG();
 378         }
 379
 380         return 0;
 381 }
 382
 383 static struct omapfb_color_key omapfb_color_keys[2];
 384
 385 static int _omapfb_set_color_key(struct omap_overlay_manager *mgr,
 386                 struct omapfb_color_key *ck)
 387 {
 388         struct omap_overlay_manager_info info;
 389         enum omap_dss_trans_key_type kt;
 390         int r;
 391
 392         mgr->get_manager_info(mgr, &info);
 393
 394         if (ck->key_type == OMAPFB_COLOR_KEY_DISABLED) {
 395                 info.trans_enabled = false;
 396                 omapfb_color_keys[mgr->id] = *ck;
 397
 398                 r = mgr->set_manager_info(mgr, &info);
 399                 if (r)
 400                         return r;
 401
 402                 r = mgr->apply(mgr);
 403
 404                 return r;
 405         }
 406
 407         switch (ck->key_type) {
 408         case OMAPFB_COLOR_KEY_GFX_DST:
 409                 kt = OMAP_DSS_COLOR_KEY_GFX_DST;
 410                 break;
 411         case OMAPFB_COLOR_KEY_VID_SRC:
 412                 kt = OMAP_DSS_COLOR_KEY_VID_SRC;
 413                 break;
 414         default:
 415                 return -EINVAL;
 416         }
 417
 418         info.default_color = ck->background;
 419         info.trans_key = ck->trans_key;
 420         info.trans_key_type = kt;
 421         info.trans_enabled = true;
 422
 423         omapfb_color_keys[mgr->id] = *ck;
 424
 425         r = mgr->set_manager_info(mgr, &info);
 426         if (r)
 427                 return r;
 428
 429         r = mgr->apply(mgr);
 430
 431         return r;
 432 }
 433
 434 static int omapfb_set_color_key(struct fb_info *fbi,
 435                 struct omapfb_color_key *ck)
 436 {
 437         struct omapfb_info *ofbi = FB2OFB(fbi);
 438         struct omapfb2_device *fbdev = ofbi->fbdev;
 439         int r;
 440         int i;
 441         struct omap_overlay_manager *mgr = NULL;
 442
 443         omapfb_lock(fbdev);
 444
 445         for (i = 0; i < ofbi->num_overlays; i++) {
 446                 if (ofbi->overlays[i]->manager) {
 447                         mgr = ofbi->overlays[i]->manager;
 448                         break;
 449                 }
 450         }
 451
 452         if (!mgr) {
 453                 r = -EINVAL;
 454                 goto err;
 455         }
 456
 457         r = _omapfb_set_color_key(mgr, ck);
 458 err:
 459         omapfb_unlock(fbdev);
 460
 461         return r;
 462 }
 463
 464 static int omapfb_get_color_key(struct fb_info *fbi,
 465                 struct omapfb_color_key *ck)
 466 {
 467         struct omapfb_info *ofbi = FB2OFB(fbi);
 468         struct omapfb2_device *fbdev = ofbi->fbdev;
 469         struct omap_overlay_manager *mgr = NULL;
 470         int r = 0;
 471         int i;
 472
 473         omapfb_lock(fbdev);
 474
 475         for (i = 0; i < ofbi->num_overlays; i++) {
 476                 if (ofbi->overlays[i]->manager) {
 477                         mgr = ofbi->overlays[i]->manager;
 478                         break;
 479                 }
 480         }
 481
 482         if (!mgr) {
 483                 r = -EINVAL;
 484                 goto err;
 485         }
 486
 487         *ck = omapfb_color_keys[mgr->id];
 488 err:
 489         omapfb_unlock(fbdev);
 490
 491         return r;
 492 }
 493
 494 static int omapfb_memory_read(struct fb_info *fbi,
 495                 struct omapfb_memory_read *mr)
 496 {
 497         struct omap_dss_device *display = fb2display(fbi);
 498         void *buf;
 499         int r;
 500
 501         if (!display || !display->driver->memory_read)
 502                 return -ENOENT;
 503
 504         if (!access_ok(VERIFY_WRITE, mr->buffer, mr->buffer_size))
 505                 return -EFAULT;
 506
 507         if (mr->w * mr->h * 3 > mr->buffer_size)
 508                 return -EINVAL;
 509
 510         buf = vmalloc(mr->buffer_size);
 511         if (!buf) {
 512                 DBG("vmalloc failed\n");
 513                 return -ENOMEM;
 514         }
 515
 516         r = display->driver->memory_read(display, buf, mr->buffer_size,
 517                         mr->x, mr->y, mr->w, mr->h);
 518
 519         if (r > 0) {
 520                 if (copy_to_user(mr->buffer, buf, mr->buffer_size))
 521                         r = -EFAULT;
 522         }
 523
 524         vfree(buf);
 525
 526         return r;
 527 }
 528
 529 static int omapfb_get_ovl_colormode(struct omapfb2_device *fbdev,
 530                              struct omapfb_ovl_colormode *mode)
 531 {
 532         int ovl_idx = mode->overlay_idx;
 533         int mode_idx = mode->mode_idx;
 534         struct omap_overlay *ovl;
 535         enum omap_color_mode supported_modes;
 536         struct fb_var_screeninfo var;
 537         int i;
 538
 539         if (ovl_idx >= fbdev->num_overlays)
 540                 return -ENODEV;
 541         ovl = fbdev->overlays[ovl_idx];
 542         supported_modes = ovl->supported_modes;
 543
 544         mode_idx = mode->mode_idx;
 545
 546         for (i = 0; i < sizeof(supported_modes) * 8; i++) {
 547                 if (!(supported_modes & (1 << i)))
 548                         continue;
 549                 /*
 550                  * It's possible that the FB doesn't support a mode
 551                  * that is supported by the overlay, so call the
 552                  * following here.
 553                  */
 554                 if (dss_mode_to_fb_mode(1 << i, &var) < 0)
 555                         continue;
 556
 557                 mode_idx--;
 558                 if (mode_idx < 0)
 559                         break;
 560         }
 561
 562         if (i == sizeof(supported_modes) * 8)
 563                 return -ENOENT;
 564
 565         mode->bits_per_pixel = var.bits_per_pixel;
 566         mode->nonstd = var.nonstd;
 567         mode->red = var.red;
 568         mode->green = var.green;
 569         mode->blue = var.blue;
 570         mode->transp = var.transp;
 571
 572         return 0;
 573 }
 574
 575 static int omapfb_wait_for_go(struct fb_info *fbi)
 576 {
 577         struct omapfb_info *ofbi = FB2OFB(fbi);
 578         int r = 0;
 579         int i;
 580
 581         for (i = 0; i < ofbi->num_overlays; ++i) {
 582                 struct omap_overlay *ovl = ofbi->overlays[i];
 583                 r = ovl->wait_for_go(ovl);
 584                 if (r)
 585                         break;
 586         }
 587
 588         return r;
 589 }
 590
 591 int omapfb_ioctl(struct fb_info *fbi, unsigned int cmd, unsigned long arg)
 592 {
 593         struct omapfb_info *ofbi = FB2OFB(fbi);
 594         struct omapfb2_device *fbdev = ofbi->fbdev;
 595         struct omap_dss_device *display = fb2display(fbi);
 596
 597         union {
 598                 struct omapfb_update_window_old uwnd_o;
 599                 struct omapfb_update_window     uwnd;
 600                 struct omapfb_plane_info        plane_info;
 601                 struct omapfb_caps              caps;
 602                 struct omapfb_mem_info          mem_info;
 603                 struct omapfb_color_key         color_key;
 604                 struct omapfb_ovl_colormode     ovl_colormode;
 605                 enum omapfb_update_mode         update_mode;
 606                 int test_num;
 607                 struct omapfb_memory_read       memory_read;
 608                 struct omapfb_vram_info         vram_info;
 609                 struct omapfb_tearsync_info     tearsync_info;
 610                 struct omapfb_display_info      display_info;
 611                 u32                             crt;
 612         } p;
 613
 614         int r = 0;
 615
 616         switch (cmd) {
 617         case OMAPFB_SYNC_GFX:
 618                 DBG("ioctl SYNC_GFX\n");
 619                 if (!display || !display->driver->sync) {
 620                         /* DSS1 never returns an error here, so we neither */
 621                         /*r = -EINVAL;*/
 622                         break;
 623                 }
 624
 625                 r = display->driver->sync(display);
 626                 break;
 627
 628         case OMAPFB_UPDATE_WINDOW_OLD:
 629                 DBG("ioctl UPDATE_WINDOW_OLD\n");
 630                 if (!display || !display->driver->update) {
 631                         r = -EINVAL;
 632                         break;
 633                 }
 634
 635                 if (copy_from_user(&p.uwnd_o,
 636                                         (void __user *)arg,
 637                                         sizeof(p.uwnd_o))) {
 638                         r = -EFAULT;
 639                         break;
 640                 }
 641
 642                 r = omapfb_update_window_nolock(fbi, p.uwnd_o.x, p.uwnd_o.y,
 643                                 p.uwnd_o.width, p.uwnd_o.height);
 644                 break;
 645
 646         case OMAPFB_UPDATE_WINDOW:
 647                 DBG("ioctl UPDATE_WINDOW\n");
 648                 if (!display || !display->driver->update) {
 649                         r = -EINVAL;
 650                         break;
 651                 }
 652
 653                 if (copy_from_user(&p.uwnd, (void __user *)arg,
 654                                         sizeof(p.uwnd))) {
 655                         r = -EFAULT;
 656                         break;
 657                 }
 658
 659                 r = omapfb_update_window_nolock(fbi, p.uwnd.x, p.uwnd.y,
 660                                 p.uwnd.width, p.uwnd.height);
 661                 break;
 662
 663         case OMAPFB_SETUP_PLANE:
 664                 DBG("ioctl SETUP_PLANE\n");
 665                 if (copy_from_user(&p.plane_info, (void __user *)arg,
 666                                         sizeof(p.plane_info)))
 667                         r = -EFAULT;
 668                 else
 669                         r = omapfb_setup_plane(fbi, &p.plane_info);
 670                 break;
 671
 672         case OMAPFB_QUERY_PLANE:
 673                 DBG("ioctl QUERY_PLANE\n");
 674                 r = omapfb_query_plane(fbi, &p.plane_info);
 675                 if (r < 0)
 676                         break;
 677                 if (copy_to_user((void __user *)arg, &p.plane_info,
 678                                         sizeof(p.plane_info)))
 679                         r = -EFAULT;
 680                 break;
 681
 682         case OMAPFB_SETUP_MEM:
 683                 DBG("ioctl SETUP_MEM\n");
 684                 if (copy_from_user(&p.mem_info, (void __user *)arg,
 685                                         sizeof(p.mem_info)))
 686                         r = -EFAULT;
 687                 else
 688                         r = omapfb_setup_mem(fbi, &p.mem_info);
 689                 break;
 690
 691         case OMAPFB_QUERY_MEM:
 692                 DBG("ioctl QUERY_MEM\n");
 693                 r = omapfb_query_mem(fbi, &p.mem_info);
 694                 if (r < 0)
 695                         break;
 696                 if (copy_to_user((void __user *)arg, &p.mem_info,
 697                                         sizeof(p.mem_info)))
 698                         r = -EFAULT;
 699                 break;
 700
 701         case OMAPFB_GET_CAPS:
 702                 DBG("ioctl GET_CAPS\n");
 703                 if (!display) {
 704                         r = -EINVAL;
 705                         break;
 706                 }
 707
 708                 memset(&p.caps, 0, sizeof(p.caps));
 709                 if (display->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE)
 710                         p.caps.ctrl |= OMAPFB_CAPS_MANUAL_UPDATE;
 711                 if (display->caps & OMAP_DSS_DISPLAY_CAP_TEAR_ELIM)
 712                         p.caps.ctrl |= OMAPFB_CAPS_TEARSYNC;
 713
 714                 if (copy_to_user((void __user *)arg, &p.caps, sizeof(p.caps)))
 715                         r = -EFAULT;
 716                 break;
 717
 718         case OMAPFB_GET_OVERLAY_COLORMODE:
 719                 DBG("ioctl GET_OVERLAY_COLORMODE\n");
 720                 if (copy_from_user(&p.ovl_colormode, (void __user *)arg,
 721                                    sizeof(p.ovl_colormode))) {
 722                         r = -EFAULT;
 723                         break;
 724                 }
 725                 r = omapfb_get_ovl_colormode(fbdev, &p.ovl_colormode);
 726                 if (r < 0)
 727                         break;
 728                 if (copy_to_user((void __user *)arg, &p.ovl_colormode,
 729                                  sizeof(p.ovl_colormode)))
 730                         r = -EFAULT;
 731                 break;
 732
 733         case OMAPFB_SET_UPDATE_MODE:
 734                 DBG("ioctl SET_UPDATE_MODE\n");
 735                 if (get_user(p.update_mode, (int __user *)arg))
 736                         r = -EFAULT;
 737                 else
 738                         r = omapfb_set_update_mode(fbi, p.update_mode);
 739                 break;
 740
 741         case OMAPFB_GET_UPDATE_MODE:
 742                 DBG("ioctl GET_UPDATE_MODE\n");
 743                 r = omapfb_get_update_mode(fbi, &p.update_mode);
 744                 if (r)
 745                         break;
 746                 if (put_user(p.update_mode,
 747                                         (enum omapfb_update_mode __user *)arg))
 748                         r = -EFAULT;
 749                 break;
 750
 751         case OMAPFB_SET_COLOR_KEY:
 752                 DBG("ioctl SET_COLOR_KEY\n");
 753                 if (copy_from_user(&p.color_key, (void __user *)arg,
 754                                    sizeof(p.color_key)))
 755                         r = -EFAULT;
 756                 else
 757                         r = omapfb_set_color_key(fbi, &p.color_key);
 758                 break;
 759
 760         case OMAPFB_GET_COLOR_KEY:
 761                 DBG("ioctl GET_COLOR_KEY\n");
 762                 r = omapfb_get_color_key(fbi, &p.color_key);
 763                 if (r)
 764                         break;
 765                 if (copy_to_user((void __user *)arg, &p.color_key,
 766                                  sizeof(p.color_key)))
 767                         r = -EFAULT;
 768                 break;
 769
 770         case FBIO_WAITFORVSYNC:
 771                 if (get_user(p.crt, (__u32 __user *)arg)) {
 772                         r = -EFAULT;
 773                         break;
 774                 }
 775                 if (p.crt != 0) {
 776                         r = -ENODEV;
 777                         break;
 778                 }
 779                 /* FALLTHROUGH */
 780
 781         case OMAPFB_WAITFORVSYNC:
 782                 DBG("ioctl WAITFORVSYNC\n");
 783                 if (!display) {
 784                         r = -EINVAL;
 785                         break;
 786                 }
 787
 788                 r = display->manager->wait_for_vsync(display->manager);
 789                 break;
 790
 791         case OMAPFB_WAITFORGO:
 792                 DBG("ioctl WAITFORGO\n");
 793                 if (!display) {
 794                         r = -EINVAL;
 795                         break;
 796                 }
 797
 798                 r = omapfb_wait_for_go(fbi);
 799                 break;
 800
 801         /* LCD and CTRL tests do the same thing for backward
 802          * compatibility */
 803         case OMAPFB_LCD_TEST:
 804                 DBG("ioctl LCD_TEST\n");
 805                 if (get_user(p.test_num, (int __user *)arg)) {
 806                         r = -EFAULT;
 807                         break;
 808                 }
 809                 if (!display || !display->driver->run_test) {
 810                         r = -EINVAL;
 811                         break;
 812                 }
 813
 814                 r = display->driver->run_test(display, p.test_num);
 815
 816                 break;
 817
 818         case OMAPFB_CTRL_TEST:
 819                 DBG("ioctl CTRL_TEST\n");
 820                 if (get_user(p.test_num, (int __user *)arg)) {
 821                         r = -EFAULT;
 822                         break;
 823                 }
 824                 if (!display || !display->driver->run_test) {
 825                         r = -EINVAL;
 826                         break;
 827                 }
 828
 829                 r = display->driver->run_test(display, p.test_num);
 830
 831                 break;
 832
 833         case OMAPFB_MEMORY_READ:
 834                 DBG("ioctl MEMORY_READ\n");
 835
 836                 if (copy_from_user(&p.memory_read, (void __user *)arg,
 837                                         sizeof(p.memory_read))) {
 838                         r = -EFAULT;
 839                         break;
 840                 }
 841
 842                 r = omapfb_memory_read(fbi, &p.memory_read);
 843
 844                 break;
 845
 846         case OMAPFB_GET_VRAM_INFO: {
 847                 unsigned long vram, free, largest;
 848
 849                 DBG("ioctl GET_VRAM_INFO\n");
 850
 851                 omap_vram_get_info(&vram, &free, &largest);
 852                 p.vram_info.total = vram;
 853                 p.vram_info.free = free;
 854                 p.vram_info.largest_free_block = largest;
 855
 856                 if (copy_to_user((void __user *)arg, &p.vram_info,
 857                                         sizeof(p.vram_info)))
 858                         r = -EFAULT;
 859                 break;
 860         }
 861
 862         case OMAPFB_SET_TEARSYNC: {
 863                 DBG("ioctl SET_TEARSYNC\n");
 864
 865                 if (copy_from_user(&p.tearsync_info, (void __user *)arg,
 866                                         sizeof(p.tearsync_info))) {
 867                         r = -EFAULT;
 868                         break;
 869                 }
 870
 871                 if (!display || !display->driver->enable_te) {
 872                         r = -ENODEV;
 873                         break;
 874                 }
 875
 876                 r = display->driver->enable_te(display,
 877                                 !!p.tearsync_info.enabled);
 878
 879                 break;
 880         }
 881
 882         case OMAPFB_GET_DISPLAY_INFO: {
 883                 u16 xres, yres;
 884
 885                 DBG("ioctl GET_DISPLAY_INFO\n");
 886
 887                 if (display == NULL) {
 888                         r = -ENODEV;
 889                         break;
 890                 }
 891
 892                 display->driver->get_resolution(display, &xres, &yres);
 893
 894                 p.display_info.xres = xres;
 895                 p.display_info.yres = yres;
 896                 p.display_info.width = 0;
 897                 p.display_info.height = 0;
 898
 899                 if (copy_to_user((void __user *)arg, &p.display_info,
 900                                         sizeof(p.display_info)))
 901                         r = -EFAULT;
 902                 break;
 903         }
 904
 905         default:
 906                 dev_err(fbdev->dev, "Unknown ioctl 0x%x\n", cmd);
 907                 r = -EINVAL;
 908         }
 909
 910         if (r < 0)
 911                 DBG("ioctl failed: %d\n", r);
 912
 913         return r;
 914 }