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