drivers/video/omap2/omapfb/omapfb-ioctl.c

   1 /*
   2  * linux/drivers/video/omap2/omapfb-ioctl.c
   3  *
   4  * Copyright (C) 2008 Nokia Corporation
   5  * Author: Tomi Valkeinen <tomi.valkeinen@nokia.com>
   6  *
   7  * Some code and ideas taken from drivers/video/omap/ driver
   8  * by Imre Deak.
   9  *
  10  * This program is free software; you can redistribute it and/or modify it
  11  * under the terms of the GNU General Public License version 2 as published by
  12  * the Free Software Foundation.
  13  *
  14  * This program is distributed in the hope that it will be useful, but WITHOUT
  15  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  16  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  17  * more details.
  18  *
  19  * You should have received a copy of the GNU General Public License along with
  20  * this program.  If not, see <http://www.gnu.org/licenses/>.
  21  */
  22
  23 #include <linux/fb.h>
  24 #include <linux/device.h>
  25 #include <linux/uaccess.h>
  26 #include <linux/platform_device.h>
  27 #include <linux/mm.h>
  28 #include <linux/omapfb.h>
  29 #include <linux/vmalloc.h>
  30 #include <linux/export.h>
  31
  32 #include <video/omapdss.h>
  33 #include <plat/vrfb.h>
  34 #include <plat/vram.h>
  35
  36 #include "omapfb.h"
  37
  38 static u8 get_mem_idx(struct omapfb_info *ofbi)
  39 {
  40         if (ofbi->id == ofbi->region->id)
  41                 return 0;
  42
  43         return OMAPFB_MEM_IDX_ENABLED | ofbi->region->id;
  44 }
  45
  46 static struct omapfb2_mem_region *get_mem_region(struct omapfb_info *ofbi,
  47                                                  u8 mem_idx)
  48 {
  49         struct omapfb2_device *fbdev = ofbi->fbdev;
  50
  51         if (mem_idx & OMAPFB_MEM_IDX_ENABLED)
  52                 mem_idx &= OMAPFB_MEM_IDX_MASK;
  53         else
  54                 mem_idx = ofbi->id;
  55
  56         if (mem_idx >= fbdev->num_fbs)
  57                 return NULL;
  58
  59         return &fbdev->regions[mem_idx];
  60 }
  61
  62 static int omapfb_setup_plane(struct fb_info *fbi, struct omapfb_plane_info *pi)
  63 {
  64         struct omapfb_info *ofbi = FB2OFB(fbi);
  65         struct omapfb2_device *fbdev = ofbi->fbdev;
  66         struct omap_overlay *ovl;
  67         struct omap_overlay_info old_info;
  68         struct omapfb2_mem_region *old_rg, *new_rg;
  69         int r = 0;
  70
  71         DBG("omapfb_setup_plane\n");
  72
  73         if (ofbi->num_overlays != 1) {
  74                 r = -EINVAL;
  75                 goto out;
  76         }
  77
  78         /* XXX uses only the first overlay */
  79         ovl = ofbi->overlays[0];
  80
  81         old_rg = ofbi->region;
  82         new_rg = get_mem_region(ofbi, pi->mem_idx);
  83         if (!new_rg) {
  84                 r = -EINVAL;
  85                 goto out;
  86         }
  87
  88         /* Take the locks in a specific order to keep lockdep happy */
  89         if (old_rg->id < new_rg->id) {
  90                 omapfb_get_mem_region(old_rg);
  91                 omapfb_get_mem_region(new_rg);
  92         } else if (new_rg->id < old_rg->id) {
  93                 omapfb_get_mem_region(new_rg);
  94                 omapfb_get_mem_region(old_rg);
  95         } else
  96                 omapfb_get_mem_region(old_rg);
  97
  98         if (pi->enabled && !new_rg->size) {
  99                 /*
 100                  * This plane's memory was freed, can't enable it
 101                  * until it's reallocated.
 102                  */
 103                 r = -EINVAL;
 104                 goto put_mem;
 105         }
 106
 107         ovl->get_overlay_info(ovl, &old_info);
 108
 109         if (old_rg != new_rg) {
 110                 ofbi->region = new_rg;
 111                 set_fb_fix(fbi);
 112         }
 113
 114         if (!pi->enabled) {
 115                 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 != 1) {
 189                 memset(pi, 0, sizeof(*pi));
 190         } else {
 191                 struct omap_overlay *ovl;
 192                 struct omap_overlay_info ovli;
 193
 194                 ovl = ofbi->overlays[0];
 195                 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 (atomic_read(&rg->map_count)) {
 229                 r = -EBUSY;
 230                 goto out;
 231         }
 232
 233         for (i = 0; i < fbdev->num_fbs; i++) {
 234                 struct omapfb_info *ofbi2 = FB2OFB(fbdev->fbs[i]);
 235                 int j;
 236
 237                 if (ofbi2->region != rg)
 238                         continue;
 239
 240                 for (j = 0; j < ofbi2->num_overlays; j++) {
 241                         struct omap_overlay *ovl;
 242                         ovl = ofbi2->overlays[j];
 243                         if (ovl->is_enabled(ovl)) {
 244                                 r = -EBUSY;
 245                                 goto out;
 246                         }
 247                 }
 248         }
 249
 250         if (rg->size != size || rg->type != mi->type) {
 251                 r = omapfb_realloc_fbmem(fbi, size, mi->type);
 252                 if (r) {
 253                         dev_err(fbdev->dev, "realloc fbmem failed\n");
 254                         goto out;
 255                 }
 256         }
 257
 258  out:
 259         atomic_dec(&rg->lock_count);
 260         up_write(&rg->lock);
 261
 262         return r;
 263 }
 264
 265 static int omapfb_query_mem(struct fb_info *fbi, struct omapfb_mem_info *mi)
 266 {
 267         struct omapfb_info *ofbi = FB2OFB(fbi);
 268         struct omapfb2_mem_region *rg;
 269
 270         rg = omapfb_get_mem_region(ofbi->region);
 271         memset(mi, 0, sizeof(*mi));
 272
 273         mi->size = rg->size;
 274         mi->type = rg->type;
 275
 276         omapfb_put_mem_region(rg);
 277
 278         return 0;
 279 }
 280
 281 static int omapfb_update_window_nolock(struct fb_info *fbi,
 282                 u32 x, u32 y, u32 w, u32 h)
 283 {
 284         struct omap_dss_device *display = fb2display(fbi);
 285         u16 dw, dh;
 286
 287         if (!display)
 288                 return 0;
 289
 290         if (w == 0 || h == 0)
 291                 return 0;
 292
 293         display->driver->get_resolution(display, &dw, &dh);
 294
 295         if (x + w > dw || y + h > dh)
 296                 return -EINVAL;
 297
 298         return display->driver->update(display, x, y, w, h);
 299 }
 300
 301 /* This function is exported for SGX driver use */
 302 int omapfb_update_window(struct fb_info *fbi,
 303                 u32 x, u32 y, u32 w, u32 h)
 304 {
 305         struct omapfb_info *ofbi = FB2OFB(fbi);
 306         struct omapfb2_device *fbdev = ofbi->fbdev;
 307         int r;
 308
 309         if (!lock_fb_info(fbi))
 310                 return -ENODEV;
 311         omapfb_lock(fbdev);
 312
 313         r = omapfb_update_window_nolock(fbi, x, y, w, h);
 314
 315         omapfb_unlock(fbdev);
 316         unlock_fb_info(fbi);
 317
 318         return r;
 319 }
 320 EXPORT_SYMBOL(omapfb_update_window);
 321
 322 int omapfb_set_update_mode(struct fb_info *fbi,
 323                                    enum omapfb_update_mode mode)
 324 {
 325         struct omap_dss_device *display = fb2display(fbi);
 326         struct omapfb_info *ofbi = FB2OFB(fbi);
 327         struct omapfb2_device *fbdev = ofbi->fbdev;
 328         struct omapfb_display_data *d;
 329         int r;
 330
 331         if (!display)
 332                 return -EINVAL;
 333
 334         if (mode != OMAPFB_AUTO_UPDATE && mode != OMAPFB_MANUAL_UPDATE)
 335                 return -EINVAL;
 336
 337         omapfb_lock(fbdev);
 338
 339         d = get_display_data(fbdev, display);
 340
 341         if (d->update_mode == mode) {
 342                 omapfb_unlock(fbdev);
 343                 return 0;
 344         }
 345
 346         r = 0;
 347
 348         if (display->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) {
 349                 if (mode == OMAPFB_AUTO_UPDATE)
 350                         omapfb_start_auto_update(fbdev, display);
 351                 else /* MANUAL_UPDATE */
 352                         omapfb_stop_auto_update(fbdev, display);
 353
 354                 d->update_mode = mode;
 355         } else { /* AUTO_UPDATE */
 356                 if (mode == OMAPFB_MANUAL_UPDATE)
 357                         r = -EINVAL;
 358         }
 359
 360         omapfb_unlock(fbdev);
 361
 362         return r;
 363 }
 364
 365 int omapfb_get_update_mode(struct fb_info *fbi,
 366                 enum omapfb_update_mode *mode)
 367 {
 368         struct omap_dss_device *display = fb2display(fbi);
 369         struct omapfb_info *ofbi = FB2OFB(fbi);
 370         struct omapfb2_device *fbdev = ofbi->fbdev;
 371         struct omapfb_display_data *d;
 372
 373         if (!display)
 374                 return -EINVAL;
 375
 376         omapfb_lock(fbdev);
 377
 378         d = get_display_data(fbdev, display);
 379
 380         *mode = d->update_mode;
 381
 382         omapfb_unlock(fbdev);
 383
 384         return 0;
 385 }
 386
 387 /* XXX this color key handling is a hack... */
 388 static struct omapfb_color_key omapfb_color_keys[2];
 389
 390 static int _omapfb_set_color_key(struct omap_overlay_manager *mgr,
 391                 struct omapfb_color_key *ck)
 392 {
 393         struct omap_overlay_manager_info info;
 394         enum omap_dss_trans_key_type kt;
 395         int r;
 396
 397         mgr->get_manager_info(mgr, &info);
 398
 399         if (ck->key_type == OMAPFB_COLOR_KEY_DISABLED) {
 400                 info.trans_enabled = false;
 401                 omapfb_color_keys[mgr->id] = *ck;
 402
 403                 r = mgr->set_manager_info(mgr, &info);
 404                 if (r)
 405                         return r;
 406
 407                 r = mgr->apply(mgr);
 408
 409                 return r;
 410         }
 411
 412         switch (ck->key_type) {
 413         case OMAPFB_COLOR_KEY_GFX_DST:
 414                 kt = OMAP_DSS_COLOR_KEY_GFX_DST;
 415                 break;
 416         case OMAPFB_COLOR_KEY_VID_SRC:
 417                 kt = OMAP_DSS_COLOR_KEY_VID_SRC;
 418                 break;
 419         default:
 420                 return -EINVAL;
 421         }
 422
 423         info.default_color = ck->background;
 424         info.trans_key = ck->trans_key;
 425         info.trans_key_type = kt;
 426         info.trans_enabled = true;
 427
 428         omapfb_color_keys[mgr->id] = *ck;
 429
 430         r = mgr->set_manager_info(mgr, &info);
 431         if (r)
 432                 return r;
 433
 434         r = mgr->apply(mgr);
 435
 436         return r;
 437 }
 438
 439 static int omapfb_set_color_key(struct fb_info *fbi,
 440                 struct omapfb_color_key *ck)
 441 {
 442         struct omapfb_info *ofbi = FB2OFB(fbi);
 443         struct omapfb2_device *fbdev = ofbi->fbdev;
 444         int r;
 445         int i;
 446         struct omap_overlay_manager *mgr = NULL;
 447
 448         omapfb_lock(fbdev);
 449
 450         for (i = 0; i < ofbi->num_overlays; i++) {
 451                 if (ofbi->overlays[i]->manager) {
 452                         mgr = ofbi->overlays[i]->manager;
 453                         break;
 454                 }
 455         }
 456
 457         if (!mgr) {
 458                 r = -EINVAL;
 459                 goto err;
 460         }
 461
 462         r = _omapfb_set_color_key(mgr, ck);
 463 err:
 464         omapfb_unlock(fbdev);
 465
 466         return r;
 467 }
 468
 469 static int omapfb_get_color_key(struct fb_info *fbi,
 470                 struct omapfb_color_key *ck)
 471 {
 472         struct omapfb_info *ofbi = FB2OFB(fbi);
 473         struct omapfb2_device *fbdev = ofbi->fbdev;
 474         struct omap_overlay_manager *mgr = NULL;
 475         int r = 0;
 476         int i;
 477
 478         omapfb_lock(fbdev);
 479
 480         for (i = 0; i < ofbi->num_overlays; i++) {
 481                 if (ofbi->overlays[i]->manager) {
 482                         mgr = ofbi->overlays[i]->manager;
 483                         break;
 484                 }
 485         }
 486
 487         if (!mgr) {
 488                 r = -EINVAL;
 489                 goto err;
 490         }
 491
 492         *ck = omapfb_color_keys[mgr->id];
 493 err:
 494         omapfb_unlock(fbdev);
 495
 496         return r;
 497 }
 498
 499 static int omapfb_memory_read(struct fb_info *fbi,
 500                 struct omapfb_memory_read *mr)
 501 {
 502         struct omap_dss_device *display = fb2display(fbi);
 503         void *buf;
 504         int r;
 505
 506         if (!display || !display->driver->memory_read)
 507                 return -ENOENT;
 508
 509         if (!access_ok(VERIFY_WRITE, mr->buffer, mr->buffer_size))
 510                 return -EFAULT;
 511
 512         if (mr->w * mr->h * 3 > mr->buffer_size)
 513                 return -EINVAL;
 514
 515         buf = vmalloc(mr->buffer_size);
 516         if (!buf) {
 517                 DBG("vmalloc failed\n");
 518                 return -ENOMEM;
 519         }
 520
 521         r = display->driver->memory_read(display, buf, mr->buffer_size,
 522                         mr->x, mr->y, mr->w, mr->h);
 523
 524         if (r > 0) {
 525                 if (copy_to_user(mr->buffer, buf, mr->buffer_size))
 526                         r = -EFAULT;
 527         }
 528
 529         vfree(buf);
 530
 531         return r;
 532 }
 533
 534 static int omapfb_get_ovl_colormode(struct omapfb2_device *fbdev,
 535                              struct omapfb_ovl_colormode *mode)
 536 {
 537         int ovl_idx = mode->overlay_idx;
 538         int mode_idx = mode->mode_idx;
 539         struct omap_overlay *ovl;
 540         enum omap_color_mode supported_modes;
 541         struct fb_var_screeninfo var;
 542         int i;
 543
 544         if (ovl_idx >= fbdev->num_overlays)
 545                 return -ENODEV;
 546         ovl = fbdev->overlays[ovl_idx];
 547         supported_modes = ovl->supported_modes;
 548
 549         mode_idx = mode->mode_idx;
 550
 551         for (i = 0; i < sizeof(supported_modes) * 8; i++) {
 552                 if (!(supported_modes & (1 << i)))
 553                         continue;
 554                 /*
 555                  * It's possible that the FB doesn't support a mode
 556                  * that is supported by the overlay, so call the
 557                  * following here.
 558                  */
 559                 if (dss_mode_to_fb_mode(1 << i, &var) < 0)
 560                         continue;
 561
 562                 mode_idx--;
 563                 if (mode_idx < 0)
 564                         break;
 565         }
 566
 567         if (i == sizeof(supported_modes) * 8)
 568                 return -ENOENT;
 569
 570         mode->bits_per_pixel = var.bits_per_pixel;
 571         mode->nonstd = var.nonstd;
 572         mode->red = var.red;
 573         mode->green = var.green;
 574         mode->blue = var.blue;
 575         mode->transp = var.transp;
 576
 577         return 0;
 578 }
 579
 580 static int omapfb_wait_for_go(struct fb_info *fbi)
 581 {
 582         struct omapfb_info *ofbi = FB2OFB(fbi);
 583         int r = 0;
 584         int i;
 585
 586         for (i = 0; i < ofbi->num_overlays; ++i) {
 587                 struct omap_overlay *ovl = ofbi->overlays[i];
 588                 r = ovl->wait_for_go(ovl);
 589                 if (r)
 590                         break;
 591         }
 592
 593         return r;
 594 }
 595
 596 int omapfb_ioctl(struct fb_info *fbi, unsigned int cmd, unsigned long arg)
 597 {
 598         struct omapfb_info *ofbi = FB2OFB(fbi);
 599         struct omapfb2_device *fbdev = ofbi->fbdev;
 600         struct omap_dss_device *display = fb2display(fbi);
 601
 602         union {
 603                 struct omapfb_update_window_old uwnd_o;
 604                 struct omapfb_update_window     uwnd;
 605                 struct omapfb_plane_info        plane_info;
 606                 struct omapfb_caps              caps;
 607                 struct omapfb_mem_info          mem_info;
 608                 struct omapfb_color_key         color_key;
 609                 struct omapfb_ovl_colormode     ovl_colormode;
 610                 enum omapfb_update_mode         update_mode;
 611                 int test_num;
 612                 struct omapfb_memory_read       memory_read;
 613                 struct omapfb_vram_info         vram_info;
 614                 struct omapfb_tearsync_info     tearsync_info;
 615                 struct omapfb_display_info      display_info;
 616                 u32                             crt;
 617         } p;
 618
 619         int r = 0;
 620
 621         switch (cmd) {
 622         case OMAPFB_SYNC_GFX:
 623                 DBG("ioctl SYNC_GFX\n");
 624                 if (!display || !display->driver->sync) {
 625                         /* DSS1 never returns an error here, so we neither */
 626                         /*r = -EINVAL;*/
 627                         break;
 628                 }
 629
 630                 r = display->driver->sync(display);
 631                 break;
 632
 633         case OMAPFB_UPDATE_WINDOW_OLD:
 634                 DBG("ioctl UPDATE_WINDOW_OLD\n");
 635                 if (!display || !display->driver->update) {
 636                         r = -EINVAL;
 637                         break;
 638                 }
 639
 640                 if (copy_from_user(&p.uwnd_o,
 641                                         (void __user *)arg,
 642                                         sizeof(p.uwnd_o))) {
 643                         r = -EFAULT;
 644                         break;
 645                 }
 646
 647                 r = omapfb_update_window_nolock(fbi, p.uwnd_o.x, p.uwnd_o.y,
 648                                 p.uwnd_o.width, p.uwnd_o.height);
 649                 break;
 650
 651         case OMAPFB_UPDATE_WINDOW:
 652                 DBG("ioctl UPDATE_WINDOW\n");
 653                 if (!display || !display->driver->update) {
 654                         r = -EINVAL;
 655                         break;
 656                 }
 657
 658                 if (copy_from_user(&p.uwnd, (void __user *)arg,
 659                                         sizeof(p.uwnd))) {
 660                         r = -EFAULT;
 661                         break;
 662                 }
 663
 664                 r = omapfb_update_window_nolock(fbi, p.uwnd.x, p.uwnd.y,
 665                                 p.uwnd.width, p.uwnd.height);
 666                 break;
 667
 668         case OMAPFB_SETUP_PLANE:
 669                 DBG("ioctl SETUP_PLANE\n");
 670                 if (copy_from_user(&p.plane_info, (void __user *)arg,
 671                                         sizeof(p.plane_info)))
 672                         r = -EFAULT;
 673                 else
 674                         r = omapfb_setup_plane(fbi, &p.plane_info);
 675                 break;
 676
 677         case OMAPFB_QUERY_PLANE:
 678                 DBG("ioctl QUERY_PLANE\n");
 679                 r = omapfb_query_plane(fbi, &p.plane_info);
 680                 if (r < 0)
 681                         break;
 682                 if (copy_to_user((void __user *)arg, &p.plane_info,
 683                                         sizeof(p.plane_info)))
 684                         r = -EFAULT;
 685                 break;
 686
 687         case OMAPFB_SETUP_MEM:
 688                 DBG("ioctl SETUP_MEM\n");
 689                 if (copy_from_user(&p.mem_info, (void __user *)arg,
 690                                         sizeof(p.mem_info)))
 691                         r = -EFAULT;
 692                 else
 693                         r = omapfb_setup_mem(fbi, &p.mem_info);
 694                 break;
 695
 696         case OMAPFB_QUERY_MEM:
 697                 DBG("ioctl QUERY_MEM\n");
 698                 r = omapfb_query_mem(fbi, &p.mem_info);
 699                 if (r < 0)
 700                         break;
 701                 if (copy_to_user((void __user *)arg, &p.mem_info,
 702                                         sizeof(p.mem_info)))
 703                         r = -EFAULT;
 704                 break;
 705
 706         case OMAPFB_GET_CAPS:
 707                 DBG("ioctl GET_CAPS\n");
 708                 if (!display) {
 709                         r = -EINVAL;
 710                         break;
 711                 }
 712
 713                 memset(&p.caps, 0, sizeof(p.caps));
 714                 if (display->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE)
 715                         p.caps.ctrl |= OMAPFB_CAPS_MANUAL_UPDATE;
 716                 if (display->caps & OMAP_DSS_DISPLAY_CAP_TEAR_ELIM)
 717                         p.caps.ctrl |= OMAPFB_CAPS_TEARSYNC;
 718
 719                 if (copy_to_user((void __user *)arg, &p.caps, sizeof(p.caps)))
 720                         r = -EFAULT;
 721                 break;
 722
 723         case OMAPFB_GET_OVERLAY_COLORMODE:
 724                 DBG("ioctl GET_OVERLAY_COLORMODE\n");
 725                 if (copy_from_user(&p.ovl_colormode, (void __user *)arg,
 726                                    sizeof(p.ovl_colormode))) {
 727                         r = -EFAULT;
 728                         break;
 729                 }
 730                 r = omapfb_get_ovl_colormode(fbdev, &p.ovl_colormode);
 731                 if (r < 0)
 732                         break;
 733                 if (copy_to_user((void __user *)arg, &p.ovl_colormode,
 734                                  sizeof(p.ovl_colormode)))
 735                         r = -EFAULT;
 736                 break;
 737
 738         case OMAPFB_SET_UPDATE_MODE:
 739                 DBG("ioctl SET_UPDATE_MODE\n");
 740                 if (get_user(p.update_mode, (int __user *)arg))
 741                         r = -EFAULT;
 742                 else
 743                         r = omapfb_set_update_mode(fbi, p.update_mode);
 744                 break;
 745
 746         case OMAPFB_GET_UPDATE_MODE:
 747                 DBG("ioctl GET_UPDATE_MODE\n");
 748                 r = omapfb_get_update_mode(fbi, &p.update_mode);
 749                 if (r)
 750                         break;
 751                 if (put_user(p.update_mode,
 752                                         (enum omapfb_update_mode __user *)arg))
 753                         r = -EFAULT;
 754                 break;
 755
 756         case OMAPFB_SET_COLOR_KEY:
 757                 DBG("ioctl SET_COLOR_KEY\n");
 758                 if (copy_from_user(&p.color_key, (void __user *)arg,
 759                                    sizeof(p.color_key)))
 760                         r = -EFAULT;
 761                 else
 762                         r = omapfb_set_color_key(fbi, &p.color_key);
 763                 break;
 764
 765         case OMAPFB_GET_COLOR_KEY:
 766                 DBG("ioctl GET_COLOR_KEY\n");
 767                 r = omapfb_get_color_key(fbi, &p.color_key);
 768                 if (r)
 769                         break;
 770                 if (copy_to_user((void __user *)arg, &p.color_key,
 771                                  sizeof(p.color_key)))
 772                         r = -EFAULT;
 773                 break;
 774
 775         case FBIO_WAITFORVSYNC:
 776                 if (get_user(p.crt, (__u32 __user *)arg)) {
 777                         r = -EFAULT;
 778                         break;
 779                 }
 780                 if (p.crt != 0) {
 781                         r = -ENODEV;
 782                         break;
 783                 }
 784                 /* FALLTHROUGH */
 785
 786         case OMAPFB_WAITFORVSYNC:
 787                 DBG("ioctl WAITFORVSYNC\n");
 788                 if (!display) {
 789                         r = -EINVAL;
 790                         break;
 791                 }
 792
 793                 r = display->manager->wait_for_vsync(display->manager);
 794                 break;
 795
 796         case OMAPFB_WAITFORGO:
 797                 DBG("ioctl WAITFORGO\n");
 798                 if (!display) {
 799                         r = -EINVAL;
 800                         break;
 801                 }
 802
 803                 r = omapfb_wait_for_go(fbi);
 804                 break;
 805
 806         /* LCD and CTRL tests do the same thing for backward
 807          * compatibility */
 808         case OMAPFB_LCD_TEST:
 809                 DBG("ioctl LCD_TEST\n");
 810                 if (get_user(p.test_num, (int __user *)arg)) {
 811                         r = -EFAULT;
 812                         break;
 813                 }
 814                 if (!display || !display->driver->run_test) {
 815                         r = -EINVAL;
 816                         break;
 817                 }
 818
 819                 r = display->driver->run_test(display, p.test_num);
 820
 821                 break;
 822
 823         case OMAPFB_CTRL_TEST:
 824                 DBG("ioctl CTRL_TEST\n");
 825                 if (get_user(p.test_num, (int __user *)arg)) {
 826                         r = -EFAULT;
 827                         break;
 828                 }
 829                 if (!display || !display->driver->run_test) {
 830                         r = -EINVAL;
 831                         break;
 832                 }
 833
 834                 r = display->driver->run_test(display, p.test_num);
 835
 836                 break;
 837
 838         case OMAPFB_MEMORY_READ:
 839                 DBG("ioctl MEMORY_READ\n");
 840
 841                 if (copy_from_user(&p.memory_read, (void __user *)arg,
 842                                         sizeof(p.memory_read))) {
 843                         r = -EFAULT;
 844                         break;
 845                 }
 846
 847                 r = omapfb_memory_read(fbi, &p.memory_read);
 848
 849                 break;
 850
 851         case OMAPFB_GET_VRAM_INFO: {
 852                 unsigned long vram, free, largest;
 853
 854                 DBG("ioctl GET_VRAM_INFO\n");
 855
 856                 omap_vram_get_info(&vram, &free, &largest);
 857                 p.vram_info.total = vram;
 858                 p.vram_info.free = free;
 859                 p.vram_info.largest_free_block = largest;
 860
 861                 if (copy_to_user((void __user *)arg, &p.vram_info,
 862                                         sizeof(p.vram_info)))
 863                         r = -EFAULT;
 864                 break;
 865         }
 866
 867         case OMAPFB_SET_TEARSYNC: {
 868                 DBG("ioctl SET_TEARSYNC\n");
 869
 870                 if (copy_from_user(&p.tearsync_info, (void __user *)arg,
 871                                         sizeof(p.tearsync_info))) {
 872                         r = -EFAULT;
 873                         break;
 874                 }
 875
 876                 if (!display || !display->driver->enable_te) {
 877                         r = -ENODEV;
 878                         break;
 879                 }
 880
 881                 r = display->driver->enable_te(display,
 882                                 !!p.tearsync_info.enabled);
 883
 884                 break;
 885         }
 886
 887         case OMAPFB_GET_DISPLAY_INFO: {
 888                 u16 xres, yres;
 889
 890                 DBG("ioctl GET_DISPLAY_INFO\n");
 891
 892                 if (display == NULL) {
 893                         r = -ENODEV;
 894                         break;
 895                 }
 896
 897                 display->driver->get_resolution(display, &xres, &yres);
 898
 899                 p.display_info.xres = xres;
 900                 p.display_info.yres = yres;
 901
 902                 if (display->driver->get_dimensions) {
 903                         u32 w, h;
 904                         display->driver->get_dimensions(display, &w, &h);
 905                         p.display_info.width = w;
 906                         p.display_info.height = h;
 907                 } else {
 908                         p.display_info.width = 0;
 909                         p.display_info.height = 0;
 910                 }
 911
 912                 if (copy_to_user((void __user *)arg, &p.display_info,
 913                                         sizeof(p.display_info)))
 914                         r = -EFAULT;
 915                 break;
 916         }
 917
 918         default:
 919                 dev_err(fbdev->dev, "Unknown ioctl 0x%x\n", cmd);
 920                 r = -EINVAL;
 921         }
 922
 923         if (r < 0)
 924                 DBG("ioctl failed: %d\n", r);
 925
 926         return r;
 927 }
 928
 929