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 == 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                 ovl->manager->apply(ovl->manager);
 142
 143         if (pi->enabled) {
 144                 r = ovl->enable(ovl);
 145                 if (r)
 146                         goto undo;
 147         }
 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 == 0) {
 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                 ovl->get_overlay_info(ovl, &ovli);
 196
 197                 pi->pos_x = ovli.pos_x;
 198                 pi->pos_y = ovli.pos_y;
 199                 pi->enabled = ovl->is_enabled(ovl);
 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_SDRAM)
 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 (rg->size == size && rg->type == mi->type)
 229                 goto out;
 230
 231         if (atomic_read(&rg->map_count)) {
 232                 r = -EBUSY;
 233                 goto out;
 234         }
 235
 236         for (i = 0; i < fbdev->num_fbs; i++) {
 237                 struct omapfb_info *ofbi2 = FB2OFB(fbdev->fbs[i]);
 238                 int j;
 239
 240                 if (ofbi2->region != rg)
 241                         continue;
 242
 243                 for (j = 0; j < ofbi2->num_overlays; j++) {
 244                         struct omap_overlay *ovl;
 245                         ovl = ofbi2->overlays[j];
 246                         if (ovl->is_enabled(ovl)) {
 247                                 r = -EBUSY;
 248                                 goto out;
 249                         }
 250                 }
 251         }
 252
 253         r = omapfb_realloc_fbmem(fbi, size, mi->type);
 254         if (r) {
 255                 dev_err(fbdev->dev, "realloc fbmem failed\n");
 256                 goto out;
 257         }
 258
 259  out:
 260         atomic_dec(&rg->lock_count);
 261         up_write(&rg->lock);
 262
 263         return r;
 264 }
 265
 266 static int omapfb_query_mem(struct fb_info *fbi, struct omapfb_mem_info *mi)
 267 {
 268         struct omapfb_info *ofbi = FB2OFB(fbi);
 269         struct omapfb2_mem_region *rg;
 270
 271         rg = omapfb_get_mem_region(ofbi->region);
 272         memset(mi, 0, sizeof(*mi));
 273
 274         mi->size = rg->size;
 275         mi->type = rg->type;
 276
 277         omapfb_put_mem_region(rg);
 278
 279         return 0;
 280 }
 281
 282 static int omapfb_update_window_nolock(struct fb_info *fbi,
 283                 u32 x, u32 y, u32 w, u32 h)
 284 {
 285         struct omap_dss_device *display = fb2display(fbi);
 286         u16 dw, dh;
 287
 288         if (!display)
 289                 return 0;
 290
 291         if (w == 0 || h == 0)
 292                 return 0;
 293
 294         display->driver->get_resolution(display, &dw, &dh);
 295
 296         if (x + w > dw || y + h > dh)
 297                 return -EINVAL;
 298
 299         return display->driver->update(display, x, y, w, h);
 300 }
 301
 302 /* This function is exported for SGX driver use */
 303 int omapfb_update_window(struct fb_info *fbi,
 304                 u32 x, u32 y, u32 w, u32 h)
 305 {
 306         struct omapfb_info *ofbi = FB2OFB(fbi);
 307         struct omapfb2_device *fbdev = ofbi->fbdev;
 308         int r;
 309
 310         if (!lock_fb_info(fbi))
 311                 return -ENODEV;
 312         omapfb_lock(fbdev);
 313
 314         r = omapfb_update_window_nolock(fbi, x, y, w, h);
 315
 316         omapfb_unlock(fbdev);
 317         unlock_fb_info(fbi);
 318
 319         return r;
 320 }
 321 EXPORT_SYMBOL(omapfb_update_window);
 322
 323 int omapfb_set_update_mode(struct fb_info *fbi,
 324                                    enum omapfb_update_mode mode)
 325 {
 326         struct omap_dss_device *display = fb2display(fbi);
 327         struct omapfb_info *ofbi = FB2OFB(fbi);
 328         struct omapfb2_device *fbdev = ofbi->fbdev;
 329         struct omapfb_display_data *d;
 330         int r;
 331
 332         if (!display)
 333                 return -EINVAL;
 334
 335         if (mode != OMAPFB_AUTO_UPDATE && mode != OMAPFB_MANUAL_UPDATE)
 336                 return -EINVAL;
 337
 338         omapfb_lock(fbdev);
 339
 340         d = get_display_data(fbdev, display);
 341
 342         if (d->update_mode == mode) {
 343                 omapfb_unlock(fbdev);
 344                 return 0;
 345         }
 346
 347         r = 0;
 348
 349         if (display->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) {
 350                 if (mode == OMAPFB_AUTO_UPDATE)
 351                         omapfb_start_auto_update(fbdev, display);
 352                 else /* MANUAL_UPDATE */
 353                         omapfb_stop_auto_update(fbdev, display);
 354
 355                 d->update_mode = mode;
 356         } else { /* AUTO_UPDATE */
 357                 if (mode == OMAPFB_MANUAL_UPDATE)
 358                         r = -EINVAL;
 359         }
 360
 361         omapfb_unlock(fbdev);
 362
 363         return r;
 364 }
 365
 366 int omapfb_get_update_mode(struct fb_info *fbi,
 367                 enum omapfb_update_mode *mode)
 368 {
 369         struct omap_dss_device *display = fb2display(fbi);
 370         struct omapfb_info *ofbi = FB2OFB(fbi);
 371         struct omapfb2_device *fbdev = ofbi->fbdev;
 372         struct omapfb_display_data *d;
 373
 374         if (!display)
 375                 return -EINVAL;
 376
 377         omapfb_lock(fbdev);
 378
 379         d = get_display_data(fbdev, display);
 380
 381         *mode = d->update_mode;
 382
 383         omapfb_unlock(fbdev);
 384
 385         return 0;
 386 }
 387
 388 /* XXX this color key handling is a hack... */
 389 static struct omapfb_color_key omapfb_color_keys[2];
 390
 391 static int _omapfb_set_color_key(struct omap_overlay_manager *mgr,
 392                 struct omapfb_color_key *ck)
 393 {
 394         struct omap_overlay_manager_info info;
 395         enum omap_dss_trans_key_type kt;
 396         int r;
 397
 398         mgr->get_manager_info(mgr, &info);
 399
 400         if (ck->key_type == OMAPFB_COLOR_KEY_DISABLED) {
 401                 info.trans_enabled = false;
 402                 omapfb_color_keys[mgr->id] = *ck;
 403
 404                 r = mgr->set_manager_info(mgr, &info);
 405                 if (r)
 406                         return r;
 407
 408                 r = mgr->apply(mgr);
 409
 410                 return r;
 411         }
 412
 413         switch (ck->key_type) {
 414         case OMAPFB_COLOR_KEY_GFX_DST:
 415                 kt = OMAP_DSS_COLOR_KEY_GFX_DST;
 416                 break;
 417         case OMAPFB_COLOR_KEY_VID_SRC:
 418                 kt = OMAP_DSS_COLOR_KEY_VID_SRC;
 419                 break;
 420         default:
 421                 return -EINVAL;
 422         }
 423
 424         info.default_color = ck->background;
 425         info.trans_key = ck->trans_key;
 426         info.trans_key_type = kt;
 427         info.trans_enabled = true;
 428
 429         omapfb_color_keys[mgr->id] = *ck;
 430
 431         r = mgr->set_manager_info(mgr, &info);
 432         if (r)
 433                 return r;
 434
 435         r = mgr->apply(mgr);
 436
 437         return r;
 438 }
 439
 440 static int omapfb_set_color_key(struct fb_info *fbi,
 441                 struct omapfb_color_key *ck)
 442 {
 443         struct omapfb_info *ofbi = FB2OFB(fbi);
 444         struct omapfb2_device *fbdev = ofbi->fbdev;
 445         int r;
 446         int i;
 447         struct omap_overlay_manager *mgr = NULL;
 448
 449         omapfb_lock(fbdev);
 450
 451         for (i = 0; i < ofbi->num_overlays; i++) {
 452                 if (ofbi->overlays[i]->manager) {
 453                         mgr = ofbi->overlays[i]->manager;
 454                         break;
 455                 }
 456         }
 457
 458         if (!mgr) {
 459                 r = -EINVAL;
 460                 goto err;
 461         }
 462
 463         r = _omapfb_set_color_key(mgr, ck);
 464 err:
 465         omapfb_unlock(fbdev);
 466
 467         return r;
 468 }
 469
 470 static int omapfb_get_color_key(struct fb_info *fbi,
 471                 struct omapfb_color_key *ck)
 472 {
 473         struct omapfb_info *ofbi = FB2OFB(fbi);
 474         struct omapfb2_device *fbdev = ofbi->fbdev;
 475         struct omap_overlay_manager *mgr = NULL;
 476         int r = 0;
 477         int i;
 478
 479         omapfb_lock(fbdev);
 480
 481         for (i = 0; i < ofbi->num_overlays; i++) {
 482                 if (ofbi->overlays[i]->manager) {
 483                         mgr = ofbi->overlays[i]->manager;
 484                         break;
 485                 }
 486         }
 487
 488         if (!mgr) {
 489                 r = -EINVAL;
 490                 goto err;
 491         }
 492
 493         *ck = omapfb_color_keys[mgr->id];
 494 err:
 495         omapfb_unlock(fbdev);
 496
 497         return r;
 498 }
 499
 500 static int omapfb_memory_read(struct fb_info *fbi,
 501                 struct omapfb_memory_read *mr)
 502 {
 503         struct omap_dss_device *display = fb2display(fbi);
 504         void *buf;
 505         int r;
 506
 507         if (!display || !display->driver->memory_read)
 508                 return -ENOENT;
 509
 510         if (!access_ok(VERIFY_WRITE, mr->buffer, mr->buffer_size))
 511                 return -EFAULT;
 512
 513         if (mr->w * mr->h * 3 > mr->buffer_size)
 514                 return -EINVAL;
 515
 516         buf = vmalloc(mr->buffer_size);
 517         if (!buf) {
 518                 DBG("vmalloc failed\n");
 519                 return -ENOMEM;
 520         }
 521
 522         r = display->driver->memory_read(display, buf, mr->buffer_size,
 523                         mr->x, mr->y, mr->w, mr->h);
 524
 525         if (r > 0) {
 526                 if (copy_to_user(mr->buffer, buf, mr->buffer_size))
 527                         r = -EFAULT;
 528         }
 529
 530         vfree(buf);
 531
 532         return r;
 533 }
 534
 535 static int omapfb_get_ovl_colormode(struct omapfb2_device *fbdev,
 536                              struct omapfb_ovl_colormode *mode)
 537 {
 538         int ovl_idx = mode->overlay_idx;
 539         int mode_idx = mode->mode_idx;
 540         struct omap_overlay *ovl;
 541         enum omap_color_mode supported_modes;
 542         struct fb_var_screeninfo var;
 543         int i;
 544
 545         if (ovl_idx >= fbdev->num_overlays)
 546                 return -ENODEV;
 547         ovl = fbdev->overlays[ovl_idx];
 548         supported_modes = ovl->supported_modes;
 549
 550         mode_idx = mode->mode_idx;
 551
 552         for (i = 0; i < sizeof(supported_modes) * 8; i++) {
 553                 if (!(supported_modes & (1 << i)))
 554                         continue;
 555                 /*
 556                  * It's possible that the FB doesn't support a mode
 557                  * that is supported by the overlay, so call the
 558                  * following here.
 559                  */
 560                 if (dss_mode_to_fb_mode(1 << i, &var) < 0)
 561                         continue;
 562
 563                 mode_idx--;
 564                 if (mode_idx < 0)
 565                         break;
 566         }
 567
 568         if (i == sizeof(supported_modes) * 8)
 569                 return -ENOENT;
 570
 571         mode->bits_per_pixel = var.bits_per_pixel;
 572         mode->nonstd = var.nonstd;
 573         mode->red = var.red;
 574         mode->green = var.green;
 575         mode->blue = var.blue;
 576         mode->transp = var.transp;
 577
 578         return 0;
 579 }
 580
 581 static int omapfb_wait_for_go(struct fb_info *fbi)
 582 {
 583         struct omapfb_info *ofbi = FB2OFB(fbi);
 584         int r = 0;
 585         int i;
 586
 587         for (i = 0; i < ofbi->num_overlays; ++i) {
 588                 struct omap_overlay *ovl = ofbi->overlays[i];
 589                 r = ovl->wait_for_go(ovl);
 590                 if (r)
 591                         break;
 592         }
 593
 594         return r;
 595 }
 596
 597 int omapfb_ioctl(struct fb_info *fbi, unsigned int cmd, unsigned long arg)
 598 {
 599         struct omapfb_info *ofbi = FB2OFB(fbi);
 600         struct omapfb2_device *fbdev = ofbi->fbdev;
 601         struct omap_dss_device *display = fb2display(fbi);
 602
 603         union {
 604                 struct omapfb_update_window_old uwnd_o;
 605                 struct omapfb_update_window     uwnd;
 606                 struct omapfb_plane_info        plane_info;
 607                 struct omapfb_caps              caps;
 608                 struct omapfb_mem_info          mem_info;
 609                 struct omapfb_color_key         color_key;
 610                 struct omapfb_ovl_colormode     ovl_colormode;
 611                 enum omapfb_update_mode         update_mode;
 612                 int test_num;
 613                 struct omapfb_memory_read       memory_read;
 614                 struct omapfb_vram_info         vram_info;
 615                 struct omapfb_tearsync_info     tearsync_info;
 616                 struct omapfb_display_info      display_info;
 617                 u32                             crt;
 618         } p;
 619
 620         int r = 0;
 621
 622         switch (cmd) {
 623         case OMAPFB_SYNC_GFX:
 624                 DBG("ioctl SYNC_GFX\n");
 625                 if (!display || !display->driver->sync) {
 626                         /* DSS1 never returns an error here, so we neither */
 627                         /*r = -EINVAL;*/
 628                         break;
 629                 }
 630
 631                 r = display->driver->sync(display);
 632                 break;
 633
 634         case OMAPFB_UPDATE_WINDOW_OLD:
 635                 DBG("ioctl UPDATE_WINDOW_OLD\n");
 636                 if (!display || !display->driver->update) {
 637                         r = -EINVAL;
 638                         break;
 639                 }
 640
 641                 if (copy_from_user(&p.uwnd_o,
 642                                         (void __user *)arg,
 643                                         sizeof(p.uwnd_o))) {
 644                         r = -EFAULT;
 645                         break;
 646                 }
 647
 648                 r = omapfb_update_window_nolock(fbi, p.uwnd_o.x, p.uwnd_o.y,
 649                                 p.uwnd_o.width, p.uwnd_o.height);
 650                 break;
 651
 652         case OMAPFB_UPDATE_WINDOW:
 653                 DBG("ioctl UPDATE_WINDOW\n");
 654                 if (!display || !display->driver->update) {
 655                         r = -EINVAL;
 656                         break;
 657                 }
 658
 659                 if (copy_from_user(&p.uwnd, (void __user *)arg,
 660                                         sizeof(p.uwnd))) {
 661                         r = -EFAULT;
 662                         break;
 663                 }
 664
 665                 r = omapfb_update_window_nolock(fbi, p.uwnd.x, p.uwnd.y,
 666                                 p.uwnd.width, p.uwnd.height);
 667                 break;
 668
 669         case OMAPFB_SETUP_PLANE:
 670                 DBG("ioctl SETUP_PLANE\n");
 671                 if (copy_from_user(&p.plane_info, (void __user *)arg,
 672                                         sizeof(p.plane_info)))
 673                         r = -EFAULT;
 674                 else
 675                         r = omapfb_setup_plane(fbi, &p.plane_info);
 676                 break;
 677
 678         case OMAPFB_QUERY_PLANE:
 679                 DBG("ioctl QUERY_PLANE\n");
 680                 r = omapfb_query_plane(fbi, &p.plane_info);
 681                 if (r < 0)
 682                         break;
 683                 if (copy_to_user((void __user *)arg, &p.plane_info,
 684                                         sizeof(p.plane_info)))
 685                         r = -EFAULT;
 686                 break;
 687
 688         case OMAPFB_SETUP_MEM:
 689                 DBG("ioctl SETUP_MEM\n");
 690                 if (copy_from_user(&p.mem_info, (void __user *)arg,
 691                                         sizeof(p.mem_info)))
 692                         r = -EFAULT;
 693                 else
 694                         r = omapfb_setup_mem(fbi, &p.mem_info);
 695                 break;
 696
 697         case OMAPFB_QUERY_MEM:
 698                 DBG("ioctl QUERY_MEM\n");
 699                 r = omapfb_query_mem(fbi, &p.mem_info);
 700                 if (r < 0)
 701                         break;
 702                 if (copy_to_user((void __user *)arg, &p.mem_info,
 703                                         sizeof(p.mem_info)))
 704                         r = -EFAULT;
 705                 break;
 706
 707         case OMAPFB_GET_CAPS:
 708                 DBG("ioctl GET_CAPS\n");
 709                 if (!display) {
 710                         r = -EINVAL;
 711                         break;
 712                 }
 713
 714                 memset(&p.caps, 0, sizeof(p.caps));
 715                 if (display->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE)
 716                         p.caps.ctrl |= OMAPFB_CAPS_MANUAL_UPDATE;
 717                 if (display->caps & OMAP_DSS_DISPLAY_CAP_TEAR_ELIM)
 718                         p.caps.ctrl |= OMAPFB_CAPS_TEARSYNC;
 719
 720                 if (copy_to_user((void __user *)arg, &p.caps, sizeof(p.caps)))
 721                         r = -EFAULT;
 722                 break;
 723
 724         case OMAPFB_GET_OVERLAY_COLORMODE:
 725                 DBG("ioctl GET_OVERLAY_COLORMODE\n");
 726                 if (copy_from_user(&p.ovl_colormode, (void __user *)arg,
 727                                    sizeof(p.ovl_colormode))) {
 728                         r = -EFAULT;
 729                         break;
 730                 }
 731                 r = omapfb_get_ovl_colormode(fbdev, &p.ovl_colormode);
 732                 if (r < 0)
 733                         break;
 734                 if (copy_to_user((void __user *)arg, &p.ovl_colormode,
 735                                  sizeof(p.ovl_colormode)))
 736                         r = -EFAULT;
 737                 break;
 738
 739         case OMAPFB_SET_UPDATE_MODE:
 740                 DBG("ioctl SET_UPDATE_MODE\n");
 741                 if (get_user(p.update_mode, (int __user *)arg))
 742                         r = -EFAULT;
 743                 else
 744                         r = omapfb_set_update_mode(fbi, p.update_mode);
 745                 break;
 746
 747         case OMAPFB_GET_UPDATE_MODE:
 748                 DBG("ioctl GET_UPDATE_MODE\n");
 749                 r = omapfb_get_update_mode(fbi, &p.update_mode);
 750                 if (r)
 751                         break;
 752                 if (put_user(p.update_mode,
 753                                         (enum omapfb_update_mode __user *)arg))
 754                         r = -EFAULT;
 755                 break;
 756
 757         case OMAPFB_SET_COLOR_KEY:
 758                 DBG("ioctl SET_COLOR_KEY\n");
 759                 if (copy_from_user(&p.color_key, (void __user *)arg,
 760                                    sizeof(p.color_key)))
 761                         r = -EFAULT;
 762                 else
 763                         r = omapfb_set_color_key(fbi, &p.color_key);
 764                 break;
 765
 766         case OMAPFB_GET_COLOR_KEY:
 767                 DBG("ioctl GET_COLOR_KEY\n");
 768                 r = omapfb_get_color_key(fbi, &p.color_key);
 769                 if (r)
 770                         break;
 771                 if (copy_to_user((void __user *)arg, &p.color_key,
 772                                  sizeof(p.color_key)))
 773                         r = -EFAULT;
 774                 break;
 775
 776         case FBIO_WAITFORVSYNC:
 777                 if (get_user(p.crt, (__u32 __user *)arg)) {
 778                         r = -EFAULT;
 779                         break;
 780                 }
 781                 if (p.crt != 0) {
 782                         r = -ENODEV;
 783                         break;
 784                 }
 785                 /* FALLTHROUGH */
 786
 787         case OMAPFB_WAITFORVSYNC:
 788                 DBG("ioctl WAITFORVSYNC\n");
 789                 if (!display) {
 790                         r = -EINVAL;
 791                         break;
 792                 }
 793
 794                 r = display->manager->wait_for_vsync(display->manager);
 795                 break;
 796
 797         case OMAPFB_WAITFORGO:
 798                 DBG("ioctl WAITFORGO\n");
 799                 if (!display) {
 800                         r = -EINVAL;
 801                         break;
 802                 }
 803
 804                 r = omapfb_wait_for_go(fbi);
 805                 break;
 806
 807         /* LCD and CTRL tests do the same thing for backward
 808          * compatibility */
 809         case OMAPFB_LCD_TEST:
 810                 DBG("ioctl LCD_TEST\n");
 811                 if (get_user(p.test_num, (int __user *)arg)) {
 812                         r = -EFAULT;
 813                         break;
 814                 }
 815                 if (!display || !display->driver->run_test) {
 816                         r = -EINVAL;
 817                         break;
 818                 }
 819
 820                 r = display->driver->run_test(display, p.test_num);
 821
 822                 break;
 823
 824         case OMAPFB_CTRL_TEST:
 825                 DBG("ioctl CTRL_TEST\n");
 826                 if (get_user(p.test_num, (int __user *)arg)) {
 827                         r = -EFAULT;
 828                         break;
 829                 }
 830                 if (!display || !display->driver->run_test) {
 831                         r = -EINVAL;
 832                         break;
 833                 }
 834
 835                 r = display->driver->run_test(display, p.test_num);
 836
 837                 break;
 838
 839         case OMAPFB_MEMORY_READ:
 840                 DBG("ioctl MEMORY_READ\n");
 841
 842                 if (copy_from_user(&p.memory_read, (void __user *)arg,
 843                                         sizeof(p.memory_read))) {
 844                         r = -EFAULT;
 845                         break;
 846                 }
 847
 848                 r = omapfb_memory_read(fbi, &p.memory_read);
 849
 850                 break;
 851
 852         case OMAPFB_GET_VRAM_INFO: {
 853                 unsigned long vram, free, largest;
 854
 855                 DBG("ioctl GET_VRAM_INFO\n");
 856
 857                 omap_vram_get_info(&vram, &free, &largest);
 858                 p.vram_info.total = vram;
 859                 p.vram_info.free = free;
 860                 p.vram_info.largest_free_block = largest;
 861
 862                 if (copy_to_user((void __user *)arg, &p.vram_info,
 863                                         sizeof(p.vram_info)))
 864                         r = -EFAULT;
 865                 break;
 866         }
 867
 868         case OMAPFB_SET_TEARSYNC: {
 869                 DBG("ioctl SET_TEARSYNC\n");
 870
 871                 if (copy_from_user(&p.tearsync_info, (void __user *)arg,
 872                                         sizeof(p.tearsync_info))) {
 873                         r = -EFAULT;
 874                         break;
 875                 }
 876
 877                 if (!display || !display->driver->enable_te) {
 878                         r = -ENODEV;
 879                         break;
 880                 }
 881
 882                 r = display->driver->enable_te(display,
 883                                 !!p.tearsync_info.enabled);
 884
 885                 break;
 886         }
 887
 888         case OMAPFB_GET_DISPLAY_INFO: {
 889                 u16 xres, yres;
 890
 891                 DBG("ioctl GET_DISPLAY_INFO\n");
 892
 893                 if (display == NULL) {
 894                         r = -ENODEV;
 895                         break;
 896                 }
 897
 898                 display->driver->get_resolution(display, &xres, &yres);
 899
 900                 p.display_info.xres = xres;
 901                 p.display_info.yres = yres;
 902
 903                 if (display->driver->get_dimensions) {
 904                         u32 w, h;
 905                         display->driver->get_dimensions(display, &w, &h);
 906                         p.display_info.width = w;
 907                         p.display_info.height = h;
 908                 } else {
 909                         p.display_info.width = 0;
 910                         p.display_info.height = 0;
 911                 }
 912
 913                 if (copy_to_user((void __user *)arg, &p.display_info,
 914                                         sizeof(p.display_info)))
 915                         r = -EFAULT;
 916                 break;
 917         }
 918
 919         default:
 920                 dev_err(fbdev->dev, "Unknown ioctl 0x%x\n", cmd);
 921                 r = -EINVAL;
 922         }
 923
 924         if (r < 0)
 925                 DBG("ioctl failed: %d\n", r);
 926
 927         return r;
 928 }
 929
 930