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 #include <linux/export.h>
  31
  32 #include <video/omapdss.h>
  33 #include <plat/vrfb.h>
  34 #include <plat/vram.h>
  35
  36 #include "omapfb.h"
  37
  38 static u8 get_mem_idx(struct omapfb_info *ofbi)
  39 {
  40         if (ofbi->id == ofbi->region->id)
  41                 return 0;
  42
  43         return OMAPFB_MEM_IDX_ENABLED | ofbi->region->id;
  44 }
  45
  46 static struct omapfb2_mem_region *get_mem_region(struct omapfb_info *ofbi,
  47                                                  u8 mem_idx)
  48 {
  49         struct omapfb2_device *fbdev = ofbi->fbdev;
  50
  51         if (mem_idx & OMAPFB_MEM_IDX_ENABLED)
  52                 mem_idx &= OMAPFB_MEM_IDX_MASK;
  53         else
  54                 mem_idx = ofbi->id;
  55
  56         if (mem_idx >= fbdev->num_fbs)
  57                 return NULL;
  58
  59         return &fbdev->regions[mem_idx];
  60 }
  61
  62 static int omapfb_setup_plane(struct fb_info *fbi, struct omapfb_plane_info *pi)
  63 {
  64         struct omapfb_info *ofbi = FB2OFB(fbi);
  65         struct omapfb2_device *fbdev = ofbi->fbdev;
  66         struct omap_overlay *ovl;
  67         struct omap_overlay_info old_info;
  68         struct omapfb2_mem_region *old_rg, *new_rg;
  69         int r = 0;
  70
  71         DBG("omapfb_setup_plane\n");
  72
  73         if (ofbi->num_overlays != 1) {
  74                 r = -EINVAL;
  75                 goto out;
  76         }
  77
  78         /* XXX uses only the first overlay */
  79         ovl = ofbi->overlays[0];
  80
  81         old_rg = ofbi->region;
  82         new_rg = get_mem_region(ofbi, pi->mem_idx);
  83         if (!new_rg) {
  84                 r = -EINVAL;
  85                 goto out;
  86         }
  87
  88         /* Take the locks in a specific order to keep lockdep happy */
  89         if (old_rg->id < new_rg->id) {
  90                 omapfb_get_mem_region(old_rg);
  91                 omapfb_get_mem_region(new_rg);
  92         } else if (new_rg->id < old_rg->id) {
  93                 omapfb_get_mem_region(new_rg);
  94                 omapfb_get_mem_region(old_rg);
  95         } else
  96                 omapfb_get_mem_region(old_rg);
  97
  98         if (pi->enabled && !new_rg->size) {
  99                 /*
 100                  * This plane's memory was freed, can't enable it
 101                  * until it's reallocated.
 102                  */
 103                 r = -EINVAL;
 104                 goto put_mem;
 105         }
 106
 107         ovl->get_overlay_info(ovl, &old_info);
 108
 109         if (old_rg != new_rg) {
 110                 ofbi->region = new_rg;
 111                 set_fb_fix(fbi);
 112         }
 113
 114         if (pi->enabled) {
 115                 struct omap_overlay_info info;
 116
 117                 r = omapfb_setup_overlay(fbi, ovl, pi->pos_x, pi->pos_y,
 118                         pi->out_width, pi->out_height);
 119                 if (r)
 120                         goto undo;
 121
 122                 ovl->get_overlay_info(ovl, &info);
 123
 124                 if (!info.enabled) {
 125                         info.enabled = pi->enabled;
 126                         r = ovl->set_overlay_info(ovl, &info);
 127                         if (r)
 128                                 goto undo;
 129                 }
 130         } else {
 131                 struct omap_overlay_info info;
 132
 133                 ovl->get_overlay_info(ovl, &info);
 134
 135                 info.enabled = pi->enabled;
 136                 info.pos_x = pi->pos_x;
 137                 info.pos_y = pi->pos_y;
 138                 info.out_width = pi->out_width;
 139                 info.out_height = pi->out_height;
 140
 141                 r = ovl->set_overlay_info(ovl, &info);
 142                 if (r)
 143                         goto undo;
 144         }
 145
 146         if (ovl->manager)
 147                 ovl->manager->apply(ovl->manager);
 148
 149         /* Release the locks in a specific order to keep lockdep happy */
 150         if (old_rg->id > new_rg->id) {
 151                 omapfb_put_mem_region(old_rg);
 152                 omapfb_put_mem_region(new_rg);
 153         } else if (new_rg->id > old_rg->id) {
 154                 omapfb_put_mem_region(new_rg);
 155                 omapfb_put_mem_region(old_rg);
 156         } else
 157                 omapfb_put_mem_region(old_rg);
 158
 159         return 0;
 160
 161  undo:
 162         if (old_rg != new_rg) {
 163                 ofbi->region = old_rg;
 164                 set_fb_fix(fbi);
 165         }
 166
 167         ovl->set_overlay_info(ovl, &old_info);
 168  put_mem:
 169         /* Release the locks in a specific order to keep lockdep happy */
 170         if (old_rg->id > new_rg->id) {
 171                 omapfb_put_mem_region(old_rg);
 172                 omapfb_put_mem_region(new_rg);
 173         } else if (new_rg->id > old_rg->id) {
 174                 omapfb_put_mem_region(new_rg);
 175                 omapfb_put_mem_region(old_rg);
 176         } else
 177                 omapfb_put_mem_region(old_rg);
 178  out:
 179         dev_err(fbdev->dev, "setup_plane failed\n");
 180
 181         return r;
 182 }
 183
 184 static int omapfb_query_plane(struct fb_info *fbi, struct omapfb_plane_info *pi)
 185 {
 186         struct omapfb_info *ofbi = FB2OFB(fbi);
 187
 188         if (ofbi->num_overlays != 1) {
 189                 memset(pi, 0, sizeof(*pi));
 190         } else {
 191                 struct omap_overlay *ovl;
 192                 struct omap_overlay_info *ovli;
 193
 194                 ovl = ofbi->overlays[0];
 195                 ovli = &ovl->info;
 196
 197                 pi->pos_x = ovli->pos_x;
 198                 pi->pos_y = ovli->pos_y;
 199                 pi->enabled = ovli->enabled;
 200                 pi->channel_out = 0; /* xxx */
 201                 pi->mirror = 0;
 202                 pi->mem_idx = get_mem_idx(ofbi);
 203                 pi->out_width = ovli->out_width;
 204                 pi->out_height = ovli->out_height;
 205         }
 206
 207         return 0;
 208 }
 209
 210 static int omapfb_setup_mem(struct fb_info *fbi, struct omapfb_mem_info *mi)
 211 {
 212         struct omapfb_info *ofbi = FB2OFB(fbi);
 213         struct omapfb2_device *fbdev = ofbi->fbdev;
 214         struct omapfb2_mem_region *rg;
 215         int r = 0, i;
 216         size_t size;
 217
 218         if (mi->type > OMAPFB_MEMTYPE_MAX)
 219                 return -EINVAL;
 220
 221         size = PAGE_ALIGN(mi->size);
 222
 223         rg = ofbi->region;
 224
 225         down_write_nested(&rg->lock, rg->id);
 226         atomic_inc(&rg->lock_count);
 227
 228         if (atomic_read(&rg->map_count)) {
 229                 r = -EBUSY;
 230                 goto out;
 231         }
 232
 233         for (i = 0; i < fbdev->num_fbs; i++) {
 234                 struct omapfb_info *ofbi2 = FB2OFB(fbdev->fbs[i]);
 235                 int j;
 236
 237                 if (ofbi2->region != rg)
 238                         continue;
 239
 240                 for (j = 0; j < ofbi2->num_overlays; j++) {
 241                         if (ofbi2->overlays[j]->info.enabled) {
 242                                 r = -EBUSY;
 243                                 goto out;
 244                         }
 245                 }
 246         }
 247
 248         if (rg->size != size || rg->type != mi->type) {
 249                 r = omapfb_realloc_fbmem(fbi, size, mi->type);
 250                 if (r) {
 251                         dev_err(fbdev->dev, "realloc fbmem failed\n");
 252                         goto out;
 253                 }
 254         }
 255
 256  out:
 257         atomic_dec(&rg->lock_count);
 258         up_write(&rg->lock);
 259
 260         return r;
 261 }
 262
 263 static int omapfb_query_mem(struct fb_info *fbi, struct omapfb_mem_info *mi)
 264 {
 265         struct omapfb_info *ofbi = FB2OFB(fbi);
 266         struct omapfb2_mem_region *rg;
 267
 268         rg = omapfb_get_mem_region(ofbi->region);
 269         memset(mi, 0, sizeof(*mi));
 270
 271         mi->size = rg->size;
 272         mi->type = rg->type;
 273
 274         omapfb_put_mem_region(rg);
 275
 276         return 0;
 277 }
 278
 279 static int omapfb_update_window_nolock(struct fb_info *fbi,
 280                 u32 x, u32 y, u32 w, u32 h)
 281 {
 282         struct omap_dss_device *display = fb2display(fbi);
 283         u16 dw, dh;
 284
 285         if (!display)
 286                 return 0;
 287
 288         if (w == 0 || h == 0)
 289                 return 0;
 290
 291         display->driver->get_resolution(display, &dw, &dh);
 292
 293         if (x + w > dw || y + h > dh)
 294                 return -EINVAL;
 295
 296         return display->driver->update(display, x, y, w, h);
 297 }
 298
 299 /* This function is exported for SGX driver use */
 300 int omapfb_update_window(struct fb_info *fbi,
 301                 u32 x, u32 y, u32 w, u32 h)
 302 {
 303         struct omapfb_info *ofbi = FB2OFB(fbi);
 304         struct omapfb2_device *fbdev = ofbi->fbdev;
 305         int r;
 306
 307         if (!lock_fb_info(fbi))
 308                 return -ENODEV;
 309         omapfb_lock(fbdev);
 310
 311         r = omapfb_update_window_nolock(fbi, x, y, w, h);
 312
 313         omapfb_unlock(fbdev);
 314         unlock_fb_info(fbi);
 315
 316         return r;
 317 }
 318 EXPORT_SYMBOL(omapfb_update_window);
 319
 320 int omapfb_set_update_mode(struct fb_info *fbi,
 321                                    enum omapfb_update_mode mode)
 322 {
 323         struct omap_dss_device *display = fb2display(fbi);
 324         struct omapfb_info *ofbi = FB2OFB(fbi);
 325         struct omapfb2_device *fbdev = ofbi->fbdev;
 326         struct omapfb_display_data *d;
 327         int r;
 328
 329         if (!display)
 330                 return -EINVAL;
 331
 332         if (mode != OMAPFB_AUTO_UPDATE && mode != OMAPFB_MANUAL_UPDATE)
 333                 return -EINVAL;
 334
 335         omapfb_lock(fbdev);
 336
 337         d = get_display_data(fbdev, display);
 338
 339         if (d->update_mode == mode) {
 340                 omapfb_unlock(fbdev);
 341                 return 0;
 342         }
 343
 344         r = 0;
 345
 346         if (display->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) {
 347                 if (mode == OMAPFB_AUTO_UPDATE)
 348                         omapfb_start_auto_update(fbdev, display);
 349                 else /* MANUAL_UPDATE */
 350                         omapfb_stop_auto_update(fbdev, display);
 351
 352                 d->update_mode = mode;
 353         } else { /* AUTO_UPDATE */
 354                 if (mode == OMAPFB_MANUAL_UPDATE)
 355                         r = -EINVAL;
 356         }
 357
 358         omapfb_unlock(fbdev);
 359
 360         return r;
 361 }
 362
 363 int omapfb_get_update_mode(struct fb_info *fbi,
 364                 enum omapfb_update_mode *mode)
 365 {
 366         struct omap_dss_device *display = fb2display(fbi);
 367         struct omapfb_info *ofbi = FB2OFB(fbi);
 368         struct omapfb2_device *fbdev = ofbi->fbdev;
 369         struct omapfb_display_data *d;
 370
 371         if (!display)
 372                 return -EINVAL;
 373
 374         omapfb_lock(fbdev);
 375
 376         d = get_display_data(fbdev, display);
 377
 378         *mode = d->update_mode;
 379
 380         omapfb_unlock(fbdev);
 381
 382         return 0;
 383 }
 384
 385 /* XXX this color key handling is a hack... */
 386 static struct omapfb_color_key omapfb_color_keys[2];
 387
 388 static int _omapfb_set_color_key(struct omap_overlay_manager *mgr,
 389                 struct omapfb_color_key *ck)
 390 {
 391         struct omap_overlay_manager_info info;
 392         enum omap_dss_trans_key_type kt;
 393         int r;
 394
 395         mgr->get_manager_info(mgr, &info);
 396
 397         if (ck->key_type == OMAPFB_COLOR_KEY_DISABLED) {
 398                 info.trans_enabled = false;
 399                 omapfb_color_keys[mgr->id] = *ck;
 400
 401                 r = mgr->set_manager_info(mgr, &info);
 402                 if (r)
 403                         return r;
 404
 405                 r = mgr->apply(mgr);
 406
 407                 return r;
 408         }
 409
 410         switch (ck->key_type) {
 411         case OMAPFB_COLOR_KEY_GFX_DST:
 412                 kt = OMAP_DSS_COLOR_KEY_GFX_DST;
 413                 break;
 414         case OMAPFB_COLOR_KEY_VID_SRC:
 415                 kt = OMAP_DSS_COLOR_KEY_VID_SRC;
 416                 break;
 417         default:
 418                 return -EINVAL;
 419         }
 420
 421         info.default_color = ck->background;
 422         info.trans_key = ck->trans_key;
 423         info.trans_key_type = kt;
 424         info.trans_enabled = true;
 425
 426         omapfb_color_keys[mgr->id] = *ck;
 427
 428         r = mgr->set_manager_info(mgr, &info);
 429         if (r)
 430                 return r;
 431
 432         r = mgr->apply(mgr);
 433
 434         return r;
 435 }
 436
 437 static int omapfb_set_color_key(struct fb_info *fbi,
 438                 struct omapfb_color_key *ck)
 439 {
 440         struct omapfb_info *ofbi = FB2OFB(fbi);
 441         struct omapfb2_device *fbdev = ofbi->fbdev;
 442         int r;
 443         int i;
 444         struct omap_overlay_manager *mgr = NULL;
 445
 446         omapfb_lock(fbdev);
 447
 448         for (i = 0; i < ofbi->num_overlays; i++) {
 449                 if (ofbi->overlays[i]->manager) {
 450                         mgr = ofbi->overlays[i]->manager;
 451                         break;
 452                 }
 453         }
 454
 455         if (!mgr) {
 456                 r = -EINVAL;
 457                 goto err;
 458         }
 459
 460         r = _omapfb_set_color_key(mgr, ck);
 461 err:
 462         omapfb_unlock(fbdev);
 463
 464         return r;
 465 }
 466
 467 static int omapfb_get_color_key(struct fb_info *fbi,
 468                 struct omapfb_color_key *ck)
 469 {
 470         struct omapfb_info *ofbi = FB2OFB(fbi);
 471         struct omapfb2_device *fbdev = ofbi->fbdev;
 472         struct omap_overlay_manager *mgr = NULL;
 473         int r = 0;
 474         int i;
 475
 476         omapfb_lock(fbdev);
 477
 478         for (i = 0; i < ofbi->num_overlays; i++) {
 479                 if (ofbi->overlays[i]->manager) {
 480                         mgr = ofbi->overlays[i]->manager;
 481                         break;
 482                 }
 483         }
 484
 485         if (!mgr) {
 486                 r = -EINVAL;
 487                 goto err;
 488         }
 489
 490         *ck = omapfb_color_keys[mgr->id];
 491 err:
 492         omapfb_unlock(fbdev);
 493
 494         return r;
 495 }
 496
 497 static int omapfb_memory_read(struct fb_info *fbi,
 498                 struct omapfb_memory_read *mr)
 499 {
 500         struct omap_dss_device *display = fb2display(fbi);
 501         void *buf;
 502         int r;
 503
 504         if (!display || !display->driver->memory_read)
 505                 return -ENOENT;
 506
 507         if (!access_ok(VERIFY_WRITE, mr->buffer, mr->buffer_size))
 508                 return -EFAULT;
 509
 510         if (mr->w * mr->h * 3 > mr->buffer_size)
 511                 return -EINVAL;
 512
 513         buf = vmalloc(mr->buffer_size);
 514         if (!buf) {
 515                 DBG("vmalloc failed\n");
 516                 return -ENOMEM;
 517         }
 518
 519         r = display->driver->memory_read(display, buf, mr->buffer_size,
 520                         mr->x, mr->y, mr->w, mr->h);
 521
 522         if (r > 0) {
 523                 if (copy_to_user(mr->buffer, buf, mr->buffer_size))
 524                         r = -EFAULT;
 525         }
 526
 527         vfree(buf);
 528
 529         return r;
 530 }
 531
 532 static int omapfb_get_ovl_colormode(struct omapfb2_device *fbdev,
 533                              struct omapfb_ovl_colormode *mode)
 534 {
 535         int ovl_idx = mode->overlay_idx;
 536         int mode_idx = mode->mode_idx;
 537         struct omap_overlay *ovl;
 538         enum omap_color_mode supported_modes;
 539         struct fb_var_screeninfo var;
 540         int i;
 541
 542         if (ovl_idx >= fbdev->num_overlays)
 543                 return -ENODEV;
 544         ovl = fbdev->overlays[ovl_idx];
 545         supported_modes = ovl->supported_modes;
 546
 547         mode_idx = mode->mode_idx;
 548
 549         for (i = 0; i < sizeof(supported_modes) * 8; i++) {
 550                 if (!(supported_modes & (1 << i)))
 551                         continue;
 552                 /*
 553                  * It's possible that the FB doesn't support a mode
 554                  * that is supported by the overlay, so call the
 555                  * following here.
 556                  */
 557                 if (dss_mode_to_fb_mode(1 << i, &var) < 0)
 558                         continue;
 559
 560                 mode_idx--;
 561                 if (mode_idx < 0)
 562                         break;
 563         }
 564
 565         if (i == sizeof(supported_modes) * 8)
 566                 return -ENOENT;
 567
 568         mode->bits_per_pixel = var.bits_per_pixel;
 569         mode->nonstd = var.nonstd;
 570         mode->red = var.red;
 571         mode->green = var.green;
 572         mode->blue = var.blue;
 573         mode->transp = var.transp;
 574
 575         return 0;
 576 }
 577
 578 static int omapfb_wait_for_go(struct fb_info *fbi)
 579 {
 580         struct omapfb_info *ofbi = FB2OFB(fbi);
 581         int r = 0;
 582         int i;
 583
 584         for (i = 0; i < ofbi->num_overlays; ++i) {
 585                 struct omap_overlay *ovl = ofbi->overlays[i];
 586                 r = ovl->wait_for_go(ovl);
 587                 if (r)
 588                         break;
 589         }
 590
 591         return r;
 592 }
 593
 594 int omapfb_ioctl(struct fb_info *fbi, unsigned int cmd, unsigned long arg)
 595 {
 596         struct omapfb_info *ofbi = FB2OFB(fbi);
 597         struct omapfb2_device *fbdev = ofbi->fbdev;
 598         struct omap_dss_device *display = fb2display(fbi);
 599
 600         union {
 601                 struct omapfb_update_window_old uwnd_o;
 602                 struct omapfb_update_window     uwnd;
 603                 struct omapfb_plane_info        plane_info;
 604                 struct omapfb_caps              caps;
 605                 struct omapfb_mem_info          mem_info;
 606                 struct omapfb_color_key         color_key;
 607                 struct omapfb_ovl_colormode     ovl_colormode;
 608                 enum omapfb_update_mode         update_mode;
 609                 int test_num;
 610                 struct omapfb_memory_read       memory_read;
 611                 struct omapfb_vram_info         vram_info;
 612                 struct omapfb_tearsync_info     tearsync_info;
 613                 struct omapfb_display_info      display_info;
 614                 u32                             crt;
 615         } p;
 616
 617         int r = 0;
 618
 619         switch (cmd) {
 620         case OMAPFB_SYNC_GFX:
 621                 DBG("ioctl SYNC_GFX\n");
 622                 if (!display || !display->driver->sync) {
 623                         /* DSS1 never returns an error here, so we neither */
 624                         /*r = -EINVAL;*/
 625                         break;
 626                 }
 627
 628                 r = display->driver->sync(display);
 629                 break;
 630
 631         case OMAPFB_UPDATE_WINDOW_OLD:
 632                 DBG("ioctl UPDATE_WINDOW_OLD\n");
 633                 if (!display || !display->driver->update) {
 634                         r = -EINVAL;
 635                         break;
 636                 }
 637
 638                 if (copy_from_user(&p.uwnd_o,
 639                                         (void __user *)arg,
 640                                         sizeof(p.uwnd_o))) {
 641                         r = -EFAULT;
 642                         break;
 643                 }
 644
 645                 r = omapfb_update_window_nolock(fbi, p.uwnd_o.x, p.uwnd_o.y,
 646                                 p.uwnd_o.width, p.uwnd_o.height);
 647                 break;
 648
 649         case OMAPFB_UPDATE_WINDOW:
 650                 DBG("ioctl UPDATE_WINDOW\n");
 651                 if (!display || !display->driver->update) {
 652                         r = -EINVAL;
 653                         break;
 654                 }
 655
 656                 if (copy_from_user(&p.uwnd, (void __user *)arg,
 657                                         sizeof(p.uwnd))) {
 658                         r = -EFAULT;
 659                         break;
 660                 }
 661
 662                 r = omapfb_update_window_nolock(fbi, p.uwnd.x, p.uwnd.y,
 663                                 p.uwnd.width, p.uwnd.height);
 664                 break;
 665
 666         case OMAPFB_SETUP_PLANE:
 667                 DBG("ioctl SETUP_PLANE\n");
 668                 if (copy_from_user(&p.plane_info, (void __user *)arg,
 669                                         sizeof(p.plane_info)))
 670                         r = -EFAULT;
 671                 else
 672                         r = omapfb_setup_plane(fbi, &p.plane_info);
 673                 break;
 674
 675         case OMAPFB_QUERY_PLANE:
 676                 DBG("ioctl QUERY_PLANE\n");
 677                 r = omapfb_query_plane(fbi, &p.plane_info);
 678                 if (r < 0)
 679                         break;
 680                 if (copy_to_user((void __user *)arg, &p.plane_info,
 681                                         sizeof(p.plane_info)))
 682                         r = -EFAULT;
 683                 break;
 684
 685         case OMAPFB_SETUP_MEM:
 686                 DBG("ioctl SETUP_MEM\n");
 687                 if (copy_from_user(&p.mem_info, (void __user *)arg,
 688                                         sizeof(p.mem_info)))
 689                         r = -EFAULT;
 690                 else
 691                         r = omapfb_setup_mem(fbi, &p.mem_info);
 692                 break;
 693
 694         case OMAPFB_QUERY_MEM:
 695                 DBG("ioctl QUERY_MEM\n");
 696                 r = omapfb_query_mem(fbi, &p.mem_info);
 697                 if (r < 0)
 698                         break;
 699                 if (copy_to_user((void __user *)arg, &p.mem_info,
 700                                         sizeof(p.mem_info)))
 701                         r = -EFAULT;
 702                 break;
 703
 704         case OMAPFB_GET_CAPS:
 705                 DBG("ioctl GET_CAPS\n");
 706                 if (!display) {
 707                         r = -EINVAL;
 708                         break;
 709                 }
 710
 711                 memset(&p.caps, 0, sizeof(p.caps));
 712                 if (display->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE)
 713                         p.caps.ctrl |= OMAPFB_CAPS_MANUAL_UPDATE;
 714                 if (display->caps & OMAP_DSS_DISPLAY_CAP_TEAR_ELIM)
 715                         p.caps.ctrl |= OMAPFB_CAPS_TEARSYNC;
 716
 717                 if (copy_to_user((void __user *)arg, &p.caps, sizeof(p.caps)))
 718                         r = -EFAULT;
 719                 break;
 720
 721         case OMAPFB_GET_OVERLAY_COLORMODE:
 722                 DBG("ioctl GET_OVERLAY_COLORMODE\n");
 723                 if (copy_from_user(&p.ovl_colormode, (void __user *)arg,
 724                                    sizeof(p.ovl_colormode))) {
 725                         r = -EFAULT;
 726                         break;
 727                 }
 728                 r = omapfb_get_ovl_colormode(fbdev, &p.ovl_colormode);
 729                 if (r < 0)
 730                         break;
 731                 if (copy_to_user((void __user *)arg, &p.ovl_colormode,
 732                                  sizeof(p.ovl_colormode)))
 733                         r = -EFAULT;
 734                 break;
 735
 736         case OMAPFB_SET_UPDATE_MODE:
 737                 DBG("ioctl SET_UPDATE_MODE\n");
 738                 if (get_user(p.update_mode, (int __user *)arg))
 739                         r = -EFAULT;
 740                 else
 741                         r = omapfb_set_update_mode(fbi, p.update_mode);
 742                 break;
 743
 744         case OMAPFB_GET_UPDATE_MODE:
 745                 DBG("ioctl GET_UPDATE_MODE\n");
 746                 r = omapfb_get_update_mode(fbi, &p.update_mode);
 747                 if (r)
 748                         break;
 749                 if (put_user(p.update_mode,
 750                                         (enum omapfb_update_mode __user *)arg))
 751                         r = -EFAULT;
 752                 break;
 753
 754         case OMAPFB_SET_COLOR_KEY:
 755                 DBG("ioctl SET_COLOR_KEY\n");
 756                 if (copy_from_user(&p.color_key, (void __user *)arg,
 757                                    sizeof(p.color_key)))
 758                         r = -EFAULT;
 759                 else
 760                         r = omapfb_set_color_key(fbi, &p.color_key);
 761                 break;
 762
 763         case OMAPFB_GET_COLOR_KEY:
 764                 DBG("ioctl GET_COLOR_KEY\n");
 765                 r = omapfb_get_color_key(fbi, &p.color_key);
 766                 if (r)
 767                         break;
 768                 if (copy_to_user((void __user *)arg, &p.color_key,
 769                                  sizeof(p.color_key)))
 770                         r = -EFAULT;
 771                 break;
 772
 773         case FBIO_WAITFORVSYNC:
 774                 if (get_user(p.crt, (__u32 __user *)arg)) {
 775                         r = -EFAULT;
 776                         break;
 777                 }
 778                 if (p.crt != 0) {
 779                         r = -ENODEV;
 780                         break;
 781                 }
 782                 /* FALLTHROUGH */
 783
 784         case OMAPFB_WAITFORVSYNC:
 785                 DBG("ioctl WAITFORVSYNC\n");
 786                 if (!display) {
 787                         r = -EINVAL;
 788                         break;
 789                 }
 790
 791                 r = display->manager->wait_for_vsync(display->manager);
 792                 break;
 793
 794         case OMAPFB_WAITFORGO:
 795                 DBG("ioctl WAITFORGO\n");
 796                 if (!display) {
 797                         r = -EINVAL;
 798                         break;
 799                 }
 800
 801                 r = omapfb_wait_for_go(fbi);
 802                 break;
 803
 804         /* LCD and CTRL tests do the same thing for backward
 805          * compatibility */
 806         case OMAPFB_LCD_TEST:
 807                 DBG("ioctl LCD_TEST\n");
 808                 if (get_user(p.test_num, (int __user *)arg)) {
 809                         r = -EFAULT;
 810                         break;
 811                 }
 812                 if (!display || !display->driver->run_test) {
 813                         r = -EINVAL;
 814                         break;
 815                 }
 816
 817                 r = display->driver->run_test(display, p.test_num);
 818
 819                 break;
 820
 821         case OMAPFB_CTRL_TEST:
 822                 DBG("ioctl CTRL_TEST\n");
 823                 if (get_user(p.test_num, (int __user *)arg)) {
 824                         r = -EFAULT;
 825                         break;
 826                 }
 827                 if (!display || !display->driver->run_test) {
 828                         r = -EINVAL;
 829                         break;
 830                 }
 831
 832                 r = display->driver->run_test(display, p.test_num);
 833
 834                 break;
 835
 836         case OMAPFB_MEMORY_READ:
 837                 DBG("ioctl MEMORY_READ\n");
 838
 839                 if (copy_from_user(&p.memory_read, (void __user *)arg,
 840                                         sizeof(p.memory_read))) {
 841                         r = -EFAULT;
 842                         break;
 843                 }
 844
 845                 r = omapfb_memory_read(fbi, &p.memory_read);
 846
 847                 break;
 848
 849         case OMAPFB_GET_VRAM_INFO: {
 850                 unsigned long vram, free, largest;
 851
 852                 DBG("ioctl GET_VRAM_INFO\n");
 853
 854                 omap_vram_get_info(&vram, &free, &largest);
 855                 p.vram_info.total = vram;
 856                 p.vram_info.free = free;
 857                 p.vram_info.largest_free_block = largest;
 858
 859                 if (copy_to_user((void __user *)arg, &p.vram_info,
 860                                         sizeof(p.vram_info)))
 861                         r = -EFAULT;
 862                 break;
 863         }
 864
 865         case OMAPFB_SET_TEARSYNC: {
 866                 DBG("ioctl SET_TEARSYNC\n");
 867
 868                 if (copy_from_user(&p.tearsync_info, (void __user *)arg,
 869                                         sizeof(p.tearsync_info))) {
 870                         r = -EFAULT;
 871                         break;
 872                 }
 873
 874                 if (!display || !display->driver->enable_te) {
 875                         r = -ENODEV;
 876                         break;
 877                 }
 878
 879                 r = display->driver->enable_te(display,
 880                                 !!p.tearsync_info.enabled);
 881
 882                 break;
 883         }
 884
 885         case OMAPFB_GET_DISPLAY_INFO: {
 886                 u16 xres, yres;
 887
 888                 DBG("ioctl GET_DISPLAY_INFO\n");
 889
 890                 if (display == NULL) {
 891                         r = -ENODEV;
 892                         break;
 893                 }
 894
 895                 display->driver->get_resolution(display, &xres, &yres);
 896
 897                 p.display_info.xres = xres;
 898                 p.display_info.yres = yres;
 899
 900                 if (display->driver->get_dimensions) {
 901                         u32 w, h;
 902                         display->driver->get_dimensions(display, &w, &h);
 903                         p.display_info.width = w;
 904                         p.display_info.height = h;
 905                 } else {
 906                         p.display_info.width = 0;
 907                         p.display_info.height = 0;
 908                 }
 909
 910                 if (copy_to_user((void __user *)arg, &p.display_info,
 911                                         sizeof(p.display_info)))
 912                         r = -EFAULT;
 913                 break;
 914         }
 915
 916         default:
 917                 dev_err(fbdev->dev, "Unknown ioctl 0x%x\n", cmd);
 918                 r = -EINVAL;
 919         }
 920
 921         if (r < 0)
 922                 DBG("ioctl failed: %d\n", r);
 923
 924         return r;
 925 }
 926
 927