drivers/video/fbdev/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 #include <linux/sizes.h>
  32
  33 #include <video/omapdss.h>
  34 #include <video/omapvrfb.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 == 0) {
  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                 r = ovl->disable(ovl);
 116                 if (r)
 117                         goto undo;
 118         }
 119
 120         if (pi->enabled) {
 121                 r = omapfb_setup_overlay(fbi, ovl, pi->pos_x, pi->pos_y,
 122                         pi->out_width, pi->out_height);
 123                 if (r)
 124                         goto undo;
 125         } else {
 126                 struct omap_overlay_info info;
 127
 128                 ovl->get_overlay_info(ovl, &info);
 129
 130                 info.pos_x = pi->pos_x;
 131                 info.pos_y = pi->pos_y;
 132                 info.out_width = pi->out_width;
 133                 info.out_height = pi->out_height;
 134
 135                 r = ovl->set_overlay_info(ovl, &info);
 136                 if (r)
 137                         goto undo;
 138         }
 139
 140         if (ovl->manager) {
 141                 r = ovl->manager->apply(ovl->manager);
 142                 if (r)
 143                         goto undo;
 144         }
 145
 146         if (pi->enabled) {
 147                 r = ovl->enable(ovl);
 148                 if (r)
 149                         goto undo;
 150         }
 151
 152         /* Release the locks in a specific order to keep lockdep happy */
 153         if (old_rg->id > new_rg->id) {
 154                 omapfb_put_mem_region(old_rg);
 155                 omapfb_put_mem_region(new_rg);
 156         } else if (new_rg->id > old_rg->id) {
 157                 omapfb_put_mem_region(new_rg);
 158                 omapfb_put_mem_region(old_rg);
 159         } else
 160                 omapfb_put_mem_region(old_rg);
 161
 162         return 0;
 163
 164  undo:
 165         if (old_rg != new_rg) {
 166                 ofbi->region = old_rg;
 167                 set_fb_fix(fbi);
 168         }
 169
 170         ovl->set_overlay_info(ovl, &old_info);
 171  put_mem:
 172         /* Release the locks in a specific order to keep lockdep happy */
 173         if (old_rg->id > new_rg->id) {
 174                 omapfb_put_mem_region(old_rg);
 175                 omapfb_put_mem_region(new_rg);
 176         } else if (new_rg->id > old_rg->id) {
 177                 omapfb_put_mem_region(new_rg);
 178                 omapfb_put_mem_region(old_rg);
 179         } else
 180                 omapfb_put_mem_region(old_rg);
 181  out:
 182         dev_err(fbdev->dev, "setup_plane failed\n");
 183
 184         return r;
 185 }
 186
 187 static int omapfb_query_plane(struct fb_info *fbi, struct omapfb_plane_info *pi)
 188 {
 189         struct omapfb_info *ofbi = FB2OFB(fbi);
 190
 191         if (ofbi->num_overlays == 0) {
 192                 memset(pi, 0, sizeof(*pi));
 193         } else {
 194                 struct omap_overlay *ovl;
 195                 struct omap_overlay_info ovli;
 196
 197                 ovl = ofbi->overlays[0];
 198                 ovl->get_overlay_info(ovl, &ovli);
 199
 200                 pi->pos_x = ovli.pos_x;
 201                 pi->pos_y = ovli.pos_y;
 202                 pi->enabled = ovl->is_enabled(ovl);
 203                 pi->channel_out = 0; /* xxx */
 204                 pi->mirror = 0;
 205                 pi->mem_idx = get_mem_idx(ofbi);
 206                 pi->out_width = ovli.out_width;
 207                 pi->out_height = ovli.out_height;
 208         }
 209
 210         return 0;
 211 }
 212
 213 static int omapfb_setup_mem(struct fb_info *fbi, struct omapfb_mem_info *mi)
 214 {
 215         struct omapfb_info *ofbi = FB2OFB(fbi);
 216         struct omapfb2_device *fbdev = ofbi->fbdev;
 217         struct omap_dss_device *display = fb2display(fbi);
 218         struct omapfb2_mem_region *rg;
 219         int r = 0, i;
 220         size_t size;
 221
 222         if (mi->type != OMAPFB_MEMTYPE_SDRAM)
 223                 return -EINVAL;
 224
 225         size = PAGE_ALIGN(mi->size);
 226
 227         if (display && display->driver->sync)
 228                 display->driver->sync(display);
 229
 230         rg = ofbi->region;
 231
 232         down_write_nested(&rg->lock, rg->id);
 233         atomic_inc(&rg->lock_count);
 234
 235         if (rg->size == size && rg->type == mi->type)
 236                 goto out;
 237
 238         if (atomic_read(&rg->map_count)) {
 239                 r = -EBUSY;
 240                 goto out;
 241         }
 242
 243         for (i = 0; i < fbdev->num_fbs; i++) {
 244                 struct omapfb_info *ofbi2 = FB2OFB(fbdev->fbs[i]);
 245                 int j;
 246
 247                 if (ofbi2->region != rg)
 248                         continue;
 249
 250                 for (j = 0; j < ofbi2->num_overlays; j++) {
 251                         struct omap_overlay *ovl;
 252                         ovl = ofbi2->overlays[j];
 253                         if (ovl->is_enabled(ovl)) {
 254                                 r = -EBUSY;
 255                                 goto out;
 256                         }
 257                 }
 258         }
 259
 260         r = omapfb_realloc_fbmem(fbi, size, mi->type);
 261         if (r) {
 262                 dev_err(fbdev->dev, "realloc fbmem failed\n");
 263                 goto out;
 264         }
 265
 266  out:
 267         atomic_dec(&rg->lock_count);
 268         up_write(&rg->lock);
 269
 270         return r;
 271 }
 272
 273 static int omapfb_query_mem(struct fb_info *fbi, struct omapfb_mem_info *mi)
 274 {
 275         struct omapfb_info *ofbi = FB2OFB(fbi);
 276         struct omapfb2_mem_region *rg;
 277
 278         rg = omapfb_get_mem_region(ofbi->region);
 279         memset(mi, 0, sizeof(*mi));
 280
 281         mi->size = rg->size;
 282         mi->type = rg->type;
 283
 284         omapfb_put_mem_region(rg);
 285
 286         return 0;
 287 }
 288
 289 static int omapfb_update_window(struct fb_info *fbi,
 290                 u32 x, u32 y, u32 w, u32 h)
 291 {
 292         struct omap_dss_device *display = fb2display(fbi);
 293         u16 dw, dh;
 294
 295         if (!display)
 296                 return 0;
 297
 298         if (w == 0 || h == 0)
 299                 return 0;
 300
 301         display->driver->get_resolution(display, &dw, &dh);
 302
 303         if (x + w > dw || y + h > dh)
 304                 return -EINVAL;
 305
 306         return display->driver->update(display, x, y, w, h);
 307 }
 308
 309 int omapfb_set_update_mode(struct fb_info *fbi,
 310                                    enum omapfb_update_mode mode)
 311 {
 312         struct omap_dss_device *display = fb2display(fbi);
 313         struct omapfb_info *ofbi = FB2OFB(fbi);
 314         struct omapfb2_device *fbdev = ofbi->fbdev;
 315         struct omapfb_display_data *d;
 316         int r;
 317
 318         if (!display)
 319                 return -EINVAL;
 320
 321         if (mode != OMAPFB_AUTO_UPDATE && mode != OMAPFB_MANUAL_UPDATE)
 322                 return -EINVAL;
 323
 324         omapfb_lock(fbdev);
 325
 326         d = get_display_data(fbdev, display);
 327
 328         if (d->update_mode == mode) {
 329                 omapfb_unlock(fbdev);
 330                 return 0;
 331         }
 332
 333         r = 0;
 334
 335         if (display->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) {
 336                 if (mode == OMAPFB_AUTO_UPDATE)
 337                         omapfb_start_auto_update(fbdev, display);
 338                 else /* MANUAL_UPDATE */
 339                         omapfb_stop_auto_update(fbdev, display);
 340
 341                 d->update_mode = mode;
 342         } else { /* AUTO_UPDATE */
 343                 if (mode == OMAPFB_MANUAL_UPDATE)
 344                         r = -EINVAL;
 345         }
 346
 347         omapfb_unlock(fbdev);
 348
 349         return r;
 350 }
 351
 352 int omapfb_get_update_mode(struct fb_info *fbi,
 353                 enum omapfb_update_mode *mode)
 354 {
 355         struct omap_dss_device *display = fb2display(fbi);
 356         struct omapfb_info *ofbi = FB2OFB(fbi);
 357         struct omapfb2_device *fbdev = ofbi->fbdev;
 358         struct omapfb_display_data *d;
 359
 360         if (!display)
 361                 return -EINVAL;
 362
 363         omapfb_lock(fbdev);
 364
 365         d = get_display_data(fbdev, display);
 366
 367         *mode = d->update_mode;
 368
 369         omapfb_unlock(fbdev);
 370
 371         return 0;
 372 }
 373
 374 /* XXX this color key handling is a hack... */
 375 static struct omapfb_color_key omapfb_color_keys[2];
 376
 377 static int _omapfb_set_color_key(struct omap_overlay_manager *mgr,
 378                 struct omapfb_color_key *ck)
 379 {
 380         struct omap_overlay_manager_info info;
 381         enum omap_dss_trans_key_type kt;
 382         int r;
 383
 384         mgr->get_manager_info(mgr, &info);
 385
 386         if (ck->key_type == OMAPFB_COLOR_KEY_DISABLED) {
 387                 info.trans_enabled = false;
 388                 omapfb_color_keys[mgr->id] = *ck;
 389
 390                 r = mgr->set_manager_info(mgr, &info);
 391                 if (r)
 392                         return r;
 393
 394                 r = mgr->apply(mgr);
 395
 396                 return r;
 397         }
 398
 399         switch (ck->key_type) {
 400         case OMAPFB_COLOR_KEY_GFX_DST:
 401                 kt = OMAP_DSS_COLOR_KEY_GFX_DST;
 402                 break;
 403         case OMAPFB_COLOR_KEY_VID_SRC:
 404                 kt = OMAP_DSS_COLOR_KEY_VID_SRC;
 405                 break;
 406         default:
 407                 return -EINVAL;
 408         }
 409
 410         info.default_color = ck->background;
 411         info.trans_key = ck->trans_key;
 412         info.trans_key_type = kt;
 413         info.trans_enabled = true;
 414
 415         omapfb_color_keys[mgr->id] = *ck;
 416
 417         r = mgr->set_manager_info(mgr, &info);
 418         if (r)
 419                 return r;
 420
 421         r = mgr->apply(mgr);
 422
 423         return r;
 424 }
 425
 426 static int omapfb_set_color_key(struct fb_info *fbi,
 427                 struct omapfb_color_key *ck)
 428 {
 429         struct omapfb_info *ofbi = FB2OFB(fbi);
 430         struct omapfb2_device *fbdev = ofbi->fbdev;
 431         int r;
 432         int i;
 433         struct omap_overlay_manager *mgr = NULL;
 434
 435         omapfb_lock(fbdev);
 436
 437         for (i = 0; i < ofbi->num_overlays; i++) {
 438                 if (ofbi->overlays[i]->manager) {
 439                         mgr = ofbi->overlays[i]->manager;
 440                         break;
 441                 }
 442         }
 443
 444         if (!mgr) {
 445                 r = -EINVAL;
 446                 goto err;
 447         }
 448
 449         r = _omapfb_set_color_key(mgr, ck);
 450 err:
 451         omapfb_unlock(fbdev);
 452
 453         return r;
 454 }
 455
 456 static int omapfb_get_color_key(struct fb_info *fbi,
 457                 struct omapfb_color_key *ck)
 458 {
 459         struct omapfb_info *ofbi = FB2OFB(fbi);
 460         struct omapfb2_device *fbdev = ofbi->fbdev;
 461         struct omap_overlay_manager *mgr = NULL;
 462         int r = 0;
 463         int i;
 464
 465         omapfb_lock(fbdev);
 466
 467         for (i = 0; i < ofbi->num_overlays; i++) {
 468                 if (ofbi->overlays[i]->manager) {
 469                         mgr = ofbi->overlays[i]->manager;
 470                         break;
 471                 }
 472         }
 473
 474         if (!mgr) {
 475                 r = -EINVAL;
 476                 goto err;
 477         }
 478
 479         *ck = omapfb_color_keys[mgr->id];
 480 err:
 481         omapfb_unlock(fbdev);
 482
 483         return r;
 484 }
 485
 486 static int omapfb_memory_read(struct fb_info *fbi,
 487                 struct omapfb_memory_read *mr)
 488 {
 489         struct omap_dss_device *display = fb2display(fbi);
 490         void *buf;
 491         int r;
 492
 493         if (!display || !display->driver->memory_read)
 494                 return -ENOENT;
 495
 496         if (!access_ok(VERIFY_WRITE, mr->buffer, mr->buffer_size))
 497                 return -EFAULT;
 498
 499         if (mr->w * mr->h * 3 > mr->buffer_size)
 500                 return -EINVAL;
 501
 502         buf = vmalloc(mr->buffer_size);
 503         if (!buf) {
 504                 DBG("vmalloc failed\n");
 505                 return -ENOMEM;
 506         }
 507
 508         r = display->driver->memory_read(display, buf, mr->buffer_size,
 509                         mr->x, mr->y, mr->w, mr->h);
 510
 511         if (r > 0) {
 512                 if (copy_to_user(mr->buffer, buf, mr->buffer_size))
 513                         r = -EFAULT;
 514         }
 515
 516         vfree(buf);
 517
 518         return r;
 519 }
 520
 521 static int omapfb_get_ovl_colormode(struct omapfb2_device *fbdev,
 522                              struct omapfb_ovl_colormode *mode)
 523 {
 524         int ovl_idx = mode->overlay_idx;
 525         int mode_idx = mode->mode_idx;
 526         struct omap_overlay *ovl;
 527         enum omap_color_mode supported_modes;
 528         struct fb_var_screeninfo var;
 529         int i;
 530
 531         if (ovl_idx >= fbdev->num_overlays)
 532                 return -ENODEV;
 533         ovl = fbdev->overlays[ovl_idx];
 534         supported_modes = ovl->supported_modes;
 535
 536         mode_idx = mode->mode_idx;
 537
 538         for (i = 0; i < sizeof(supported_modes) * 8; i++) {
 539                 if (!(supported_modes & (1 << i)))
 540                         continue;
 541                 /*
 542                  * It's possible that the FB doesn't support a mode
 543                  * that is supported by the overlay, so call the
 544                  * following here.
 545                  */
 546                 if (dss_mode_to_fb_mode(1 << i, &var) < 0)
 547                         continue;
 548
 549                 mode_idx--;
 550                 if (mode_idx < 0)
 551                         break;
 552         }
 553
 554         if (i == sizeof(supported_modes) * 8)
 555                 return -ENOENT;
 556
 557         mode->bits_per_pixel = var.bits_per_pixel;
 558         mode->nonstd = var.nonstd;
 559         mode->red = var.red;
 560         mode->green = var.green;
 561         mode->blue = var.blue;
 562         mode->transp = var.transp;
 563
 564         return 0;
 565 }
 566
 567 static int omapfb_wait_for_go(struct fb_info *fbi)
 568 {
 569         struct omapfb_info *ofbi = FB2OFB(fbi);
 570         int r = 0;
 571         int i;
 572
 573         for (i = 0; i < ofbi->num_overlays; ++i) {
 574                 struct omap_overlay *ovl = ofbi->overlays[i];
 575                 r = ovl->wait_for_go(ovl);
 576                 if (r)
 577                         break;
 578         }
 579
 580         return r;
 581 }
 582
 583 int omapfb_ioctl(struct fb_info *fbi, unsigned int cmd, unsigned long arg)
 584 {
 585         struct omapfb_info *ofbi = FB2OFB(fbi);
 586         struct omapfb2_device *fbdev = ofbi->fbdev;
 587         struct omap_dss_device *display = fb2display(fbi);
 588         struct omap_overlay_manager *mgr;
 589
 590         union {
 591                 struct omapfb_update_window_old uwnd_o;
 592                 struct omapfb_update_window     uwnd;
 593                 struct omapfb_plane_info        plane_info;
 594                 struct omapfb_caps              caps;
 595                 struct omapfb_mem_info          mem_info;
 596                 struct omapfb_color_key         color_key;
 597                 struct omapfb_ovl_colormode     ovl_colormode;
 598                 enum omapfb_update_mode         update_mode;
 599                 int test_num;
 600                 struct omapfb_memory_read       memory_read;
 601                 struct omapfb_vram_info         vram_info;
 602                 struct omapfb_tearsync_info     tearsync_info;
 603                 struct omapfb_display_info      display_info;
 604                 u32                             crt;
 605         } p;
 606
 607         int r = 0;
 608
 609         switch (cmd) {
 610         case OMAPFB_SYNC_GFX:
 611                 DBG("ioctl SYNC_GFX\n");
 612                 if (!display || !display->driver->sync) {
 613                         /* DSS1 never returns an error here, so we neither */
 614                         /*r = -EINVAL;*/
 615                         break;
 616                 }
 617
 618                 r = display->driver->sync(display);
 619                 break;
 620
 621         case OMAPFB_UPDATE_WINDOW_OLD:
 622                 DBG("ioctl UPDATE_WINDOW_OLD\n");
 623                 if (!display || !display->driver->update) {
 624                         r = -EINVAL;
 625                         break;
 626                 }
 627
 628                 if (copy_from_user(&p.uwnd_o,
 629                                         (void __user *)arg,
 630                                         sizeof(p.uwnd_o))) {
 631                         r = -EFAULT;
 632                         break;
 633                 }
 634
 635                 r = omapfb_update_window(fbi, p.uwnd_o.x, p.uwnd_o.y,
 636                                 p.uwnd_o.width, p.uwnd_o.height);
 637                 break;
 638
 639         case OMAPFB_UPDATE_WINDOW:
 640                 DBG("ioctl UPDATE_WINDOW\n");
 641                 if (!display || !display->driver->update) {
 642                         r = -EINVAL;
 643                         break;
 644                 }
 645
 646                 if (copy_from_user(&p.uwnd, (void __user *)arg,
 647                                         sizeof(p.uwnd))) {
 648                         r = -EFAULT;
 649                         break;
 650                 }
 651
 652                 r = omapfb_update_window(fbi, p.uwnd.x, p.uwnd.y,
 653                                 p.uwnd.width, p.uwnd.height);
 654                 break;
 655
 656         case OMAPFB_SETUP_PLANE:
 657                 DBG("ioctl SETUP_PLANE\n");
 658                 if (copy_from_user(&p.plane_info, (void __user *)arg,
 659                                         sizeof(p.plane_info)))
 660                         r = -EFAULT;
 661                 else
 662                         r = omapfb_setup_plane(fbi, &p.plane_info);
 663                 break;
 664
 665         case OMAPFB_QUERY_PLANE:
 666                 DBG("ioctl QUERY_PLANE\n");
 667                 r = omapfb_query_plane(fbi, &p.plane_info);
 668                 if (r < 0)
 669                         break;
 670                 if (copy_to_user((void __user *)arg, &p.plane_info,
 671                                         sizeof(p.plane_info)))
 672                         r = -EFAULT;
 673                 break;
 674
 675         case OMAPFB_SETUP_MEM:
 676                 DBG("ioctl SETUP_MEM\n");
 677                 if (copy_from_user(&p.mem_info, (void __user *)arg,
 678                                         sizeof(p.mem_info)))
 679                         r = -EFAULT;
 680                 else
 681                         r = omapfb_setup_mem(fbi, &p.mem_info);
 682                 break;
 683
 684         case OMAPFB_QUERY_MEM:
 685                 DBG("ioctl QUERY_MEM\n");
 686                 r = omapfb_query_mem(fbi, &p.mem_info);
 687                 if (r < 0)
 688                         break;
 689                 if (copy_to_user((void __user *)arg, &p.mem_info,
 690                                         sizeof(p.mem_info)))
 691                         r = -EFAULT;
 692                 break;
 693
 694         case OMAPFB_GET_CAPS:
 695                 DBG("ioctl GET_CAPS\n");
 696                 if (!display) {
 697                         r = -EINVAL;
 698                         break;
 699                 }
 700
 701                 memset(&p.caps, 0, sizeof(p.caps));
 702                 if (display->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE)
 703                         p.caps.ctrl |= OMAPFB_CAPS_MANUAL_UPDATE;
 704                 if (display->caps & OMAP_DSS_DISPLAY_CAP_TEAR_ELIM)
 705                         p.caps.ctrl |= OMAPFB_CAPS_TEARSYNC;
 706
 707                 if (copy_to_user((void __user *)arg, &p.caps, sizeof(p.caps)))
 708                         r = -EFAULT;
 709                 break;
 710
 711         case OMAPFB_GET_OVERLAY_COLORMODE:
 712                 DBG("ioctl GET_OVERLAY_COLORMODE\n");
 713                 if (copy_from_user(&p.ovl_colormode, (void __user *)arg,
 714                                    sizeof(p.ovl_colormode))) {
 715                         r = -EFAULT;
 716                         break;
 717                 }
 718                 r = omapfb_get_ovl_colormode(fbdev, &p.ovl_colormode);
 719                 if (r < 0)
 720                         break;
 721                 if (copy_to_user((void __user *)arg, &p.ovl_colormode,
 722                                  sizeof(p.ovl_colormode)))
 723                         r = -EFAULT;
 724                 break;
 725
 726         case OMAPFB_SET_UPDATE_MODE:
 727                 DBG("ioctl SET_UPDATE_MODE\n");
 728                 if (get_user(p.update_mode, (int __user *)arg))
 729                         r = -EFAULT;
 730                 else
 731                         r = omapfb_set_update_mode(fbi, p.update_mode);
 732                 break;
 733
 734         case OMAPFB_GET_UPDATE_MODE:
 735                 DBG("ioctl GET_UPDATE_MODE\n");
 736                 r = omapfb_get_update_mode(fbi, &p.update_mode);
 737                 if (r)
 738                         break;
 739                 if (put_user(p.update_mode,
 740                                         (enum omapfb_update_mode __user *)arg))
 741                         r = -EFAULT;
 742                 break;
 743
 744         case OMAPFB_SET_COLOR_KEY:
 745                 DBG("ioctl SET_COLOR_KEY\n");
 746                 if (copy_from_user(&p.color_key, (void __user *)arg,
 747                                    sizeof(p.color_key)))
 748                         r = -EFAULT;
 749                 else
 750                         r = omapfb_set_color_key(fbi, &p.color_key);
 751                 break;
 752
 753         case OMAPFB_GET_COLOR_KEY:
 754                 DBG("ioctl GET_COLOR_KEY\n");
 755                 r = omapfb_get_color_key(fbi, &p.color_key);
 756                 if (r)
 757                         break;
 758                 if (copy_to_user((void __user *)arg, &p.color_key,
 759                                  sizeof(p.color_key)))
 760                         r = -EFAULT;
 761                 break;
 762
 763         case FBIO_WAITFORVSYNC:
 764                 if (get_user(p.crt, (__u32 __user *)arg)) {
 765                         r = -EFAULT;
 766                         break;
 767                 }
 768                 if (p.crt != 0) {
 769                         r = -ENODEV;
 770                         break;
 771                 }
 772                 /* FALLTHROUGH */
 773
 774         case OMAPFB_WAITFORVSYNC:
 775                 DBG("ioctl WAITFORVSYNC\n");
 776
 777                 if (!display) {
 778                         r = -EINVAL;
 779                         break;
 780                 }
 781
 782                 mgr = omapdss_find_mgr_from_display(display);
 783                 if (!mgr) {
 784                         r = -EINVAL;
 785                         break;
 786                 }
 787
 788                 r = mgr->wait_for_vsync(mgr);
 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                 DBG("ioctl GET_VRAM_INFO\n");
 848
 849                 /*
 850                  * We don't have the ability to get this vram info anymore.
 851                  * Fill in something that should keep the applications working.
 852                  */
 853                 p.vram_info.total = SZ_1M * 64;
 854                 p.vram_info.free = SZ_1M * 64;
 855                 p.vram_info.largest_free_block = SZ_1M * 64;
 856
 857                 if (copy_to_user((void __user *)arg, &p.vram_info,
 858                                         sizeof(p.vram_info)))
 859                         r = -EFAULT;
 860                 break;
 861         }
 862
 863         case OMAPFB_SET_TEARSYNC: {
 864                 DBG("ioctl SET_TEARSYNC\n");
 865
 866                 if (copy_from_user(&p.tearsync_info, (void __user *)arg,
 867                                         sizeof(p.tearsync_info))) {
 868                         r = -EFAULT;
 869                         break;
 870                 }
 871
 872                 if (!display || !display->driver->enable_te) {
 873                         r = -ENODEV;
 874                         break;
 875                 }
 876
 877                 r = display->driver->enable_te(display,
 878                                 !!p.tearsync_info.enabled);
 879
 880                 break;
 881         }
 882
 883         case OMAPFB_GET_DISPLAY_INFO: {
 884                 u16 xres, yres;
 885
 886                 DBG("ioctl GET_DISPLAY_INFO\n");
 887
 888                 if (display == NULL) {
 889                         r = -ENODEV;
 890                         break;
 891                 }
 892
 893                 display->driver->get_resolution(display, &xres, &yres);
 894
 895                 p.display_info.xres = xres;
 896                 p.display_info.yres = yres;
 897
 898                 if (display->driver->get_dimensions) {
 899                         u32 w, h;
 900                         display->driver->get_dimensions(display, &w, &h);
 901                         p.display_info.width = w;
 902                         p.display_info.height = h;
 903                 } else {
 904                         p.display_info.width = 0;
 905                         p.display_info.height = 0;
 906                 }
 907
 908                 if (copy_to_user((void __user *)arg, &p.display_info,
 909                                         sizeof(p.display_info)))
 910                         r = -EFAULT;
 911                 break;
 912         }
 913
 914         default:
 915                 dev_err(fbdev->dev, "Unknown ioctl 0x%x\n", cmd);
 916                 r = -EINVAL;
 917         }
 918
 919         if (r < 0)
 920                 DBG("ioctl failed: %d\n", r);
 921
 922         return r;
 923 }
 924
 925