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