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 #include <linux/sizes.h>
  32
  33 #include <video/omapdss.h>
  34 #include <video/omapvrfb.h>
  35
  36 #include "omapfb.h"
  37
  38 static u8 get_mem_idx(struct omapfb_info *ofbi)
  39 {
  40         if (ofbi->id == ofbi->region->id)
  41                 return 0;
  42
  43         return OMAPFB_MEM_IDX_ENABLED | ofbi->region->id;
  44 }
  45
  46 static struct omapfb2_mem_region *get_mem_region(struct omapfb_info *ofbi,
  47                                                  u8 mem_idx)
  48 {
  49         struct omapfb2_device *fbdev = ofbi->fbdev;
  50
  51         if (mem_idx & OMAPFB_MEM_IDX_ENABLED)
  52                 mem_idx &= OMAPFB_MEM_IDX_MASK;
  53         else
  54                 mem_idx = ofbi->id;
  55
  56         if (mem_idx >= fbdev->num_fbs)
  57                 return NULL;
  58
  59         return &fbdev->regions[mem_idx];
  60 }
  61
  62 static int omapfb_setup_plane(struct fb_info *fbi, struct omapfb_plane_info *pi)
  63 {
  64         struct omapfb_info *ofbi = FB2OFB(fbi);
  65         struct omapfb2_device *fbdev = ofbi->fbdev;
  66         struct omap_overlay *ovl;
  67         struct omap_overlay_info old_info;
  68         struct omapfb2_mem_region *old_rg, *new_rg;
  69         int r = 0;
  70
  71         DBG("omapfb_setup_plane\n");
  72
  73         if (ofbi->num_overlays == 0) {
  74                 r = -EINVAL;
  75                 goto out;
  76         }
  77
  78         /* XXX uses only the first overlay */
  79         ovl = ofbi->overlays[0];
  80
  81         old_rg = ofbi->region;
  82         new_rg = get_mem_region(ofbi, pi->mem_idx);
  83         if (!new_rg) {
  84                 r = -EINVAL;
  85                 goto out;
  86         }
  87
  88         /* Take the locks in a specific order to keep lockdep happy */
  89         if (old_rg->id < new_rg->id) {
  90                 omapfb_get_mem_region(old_rg);
  91                 omapfb_get_mem_region(new_rg);
  92         } else if (new_rg->id < old_rg->id) {
  93                 omapfb_get_mem_region(new_rg);
  94                 omapfb_get_mem_region(old_rg);
  95         } else
  96                 omapfb_get_mem_region(old_rg);
  97
  98         if (pi->enabled && !new_rg->size) {
  99                 /*
 100                  * This plane's memory was freed, can't enable it
 101                  * until it's reallocated.
 102                  */
 103                 r = -EINVAL;
 104                 goto put_mem;
 105         }
 106
 107         ovl->get_overlay_info(ovl, &old_info);
 108
 109         if (old_rg != new_rg) {
 110                 ofbi->region = new_rg;
 111                 set_fb_fix(fbi);
 112         }
 113
 114         if (!pi->enabled) {
 115                 r = ovl->disable(ovl);
 116                 if (r)
 117                         goto undo;
 118         }
 119
 120         if (pi->enabled) {
 121                 r = omapfb_setup_overlay(fbi, ovl, pi->pos_x, pi->pos_y,
 122                         pi->out_width, pi->out_height);
 123                 if (r)
 124                         goto undo;
 125         } else {
 126                 struct omap_overlay_info info;
 127
 128                 ovl->get_overlay_info(ovl, &info);
 129
 130                 info.pos_x = pi->pos_x;
 131                 info.pos_y = pi->pos_y;
 132                 info.out_width = pi->out_width;
 133                 info.out_height = pi->out_height;
 134
 135                 r = ovl->set_overlay_info(ovl, &info);
 136                 if (r)
 137                         goto undo;
 138         }
 139
 140         if (ovl->manager)
 141                 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 omap_dss_device *display = fb2display(fbi);
 215         struct omapfb2_mem_region *rg;
 216         int r = 0, i;
 217         size_t size;
 218
 219         if (mi->type != OMAPFB_MEMTYPE_SDRAM)
 220                 return -EINVAL;
 221
 222         size = PAGE_ALIGN(mi->size);
 223
 224         if (display && display->driver->sync)
 225                 display->driver->sync(display);
 226
 227         rg = ofbi->region;
 228
 229         down_write_nested(&rg->lock, rg->id);
 230         atomic_inc(&rg->lock_count);
 231
 232         if (rg->size == size && rg->type == mi->type)
 233                 goto out;
 234
 235         if (atomic_read(&rg->map_count)) {
 236                 r = -EBUSY;
 237                 goto out;
 238         }
 239
 240         for (i = 0; i < fbdev->num_fbs; i++) {
 241                 struct omapfb_info *ofbi2 = FB2OFB(fbdev->fbs[i]);
 242                 int j;
 243
 244                 if (ofbi2->region != rg)
 245                         continue;
 246
 247                 for (j = 0; j < ofbi2->num_overlays; j++) {
 248                         struct omap_overlay *ovl;
 249                         ovl = ofbi2->overlays[j];
 250                         if (ovl->is_enabled(ovl)) {
 251                                 r = -EBUSY;
 252                                 goto out;
 253                         }
 254                 }
 255         }
 256
 257         r = omapfb_realloc_fbmem(fbi, size, mi->type);
 258         if (r) {
 259                 dev_err(fbdev->dev, "realloc fbmem failed\n");
 260                 goto out;
 261         }
 262
 263  out:
 264         atomic_dec(&rg->lock_count);
 265         up_write(&rg->lock);
 266
 267         return r;
 268 }
 269
 270 static int omapfb_query_mem(struct fb_info *fbi, struct omapfb_mem_info *mi)
 271 {
 272         struct omapfb_info *ofbi = FB2OFB(fbi);
 273         struct omapfb2_mem_region *rg;
 274
 275         rg = omapfb_get_mem_region(ofbi->region);
 276         memset(mi, 0, sizeof(*mi));
 277
 278         mi->size = rg->size;
 279         mi->type = rg->type;
 280
 281         omapfb_put_mem_region(rg);
 282
 283         return 0;
 284 }
 285
 286 static int omapfb_update_window(struct fb_info *fbi,
 287                 u32 x, u32 y, u32 w, u32 h)
 288 {
 289         struct omap_dss_device *display = fb2display(fbi);
 290         u16 dw, dh;
 291
 292         if (!display)
 293                 return 0;
 294
 295         if (w == 0 || h == 0)
 296                 return 0;
 297
 298         display->driver->get_resolution(display, &dw, &dh);
 299
 300         if (x + w > dw || y + h > dh)
 301                 return -EINVAL;
 302
 303         return display->driver->update(display, x, y, w, h);
 304 }
 305
 306 int omapfb_set_update_mode(struct fb_info *fbi,
 307                                    enum omapfb_update_mode mode)
 308 {
 309         struct omap_dss_device *display = fb2display(fbi);
 310         struct omapfb_info *ofbi = FB2OFB(fbi);
 311         struct omapfb2_device *fbdev = ofbi->fbdev;
 312         struct omapfb_display_data *d;
 313         int r;
 314
 315         if (!display)
 316                 return -EINVAL;
 317
 318         if (mode != OMAPFB_AUTO_UPDATE && mode != OMAPFB_MANUAL_UPDATE)
 319                 return -EINVAL;
 320
 321         omapfb_lock(fbdev);
 322
 323         d = get_display_data(fbdev, display);
 324
 325         if (d->update_mode == mode) {
 326                 omapfb_unlock(fbdev);
 327                 return 0;
 328         }
 329
 330         r = 0;
 331
 332         if (display->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) {
 333                 if (mode == OMAPFB_AUTO_UPDATE)
 334                         omapfb_start_auto_update(fbdev, display);
 335                 else /* MANUAL_UPDATE */
 336                         omapfb_stop_auto_update(fbdev, display);
 337
 338                 d->update_mode = mode;
 339         } else { /* AUTO_UPDATE */
 340                 if (mode == OMAPFB_MANUAL_UPDATE)
 341                         r = -EINVAL;
 342         }
 343
 344         omapfb_unlock(fbdev);
 345
 346         return r;
 347 }
 348
 349 int omapfb_get_update_mode(struct fb_info *fbi,
 350                 enum omapfb_update_mode *mode)
 351 {
 352         struct omap_dss_device *display = fb2display(fbi);
 353         struct omapfb_info *ofbi = FB2OFB(fbi);
 354         struct omapfb2_device *fbdev = ofbi->fbdev;
 355         struct omapfb_display_data *d;
 356
 357         if (!display)
 358                 return -EINVAL;
 359
 360         omapfb_lock(fbdev);
 361
 362         d = get_display_data(fbdev, display);
 363
 364         *mode = d->update_mode;
 365
 366         omapfb_unlock(fbdev);
 367
 368         return 0;
 369 }
 370
 371 /* XXX this color key handling is a hack... */
 372 static struct omapfb_color_key omapfb_color_keys[2];
 373
 374 static int _omapfb_set_color_key(struct omap_overlay_manager *mgr,
 375                 struct omapfb_color_key *ck)
 376 {
 377         struct omap_overlay_manager_info info;
 378         enum omap_dss_trans_key_type kt;
 379         int r;
 380
 381         mgr->get_manager_info(mgr, &info);
 382
 383         if (ck->key_type == OMAPFB_COLOR_KEY_DISABLED) {
 384                 info.trans_enabled = false;
 385                 omapfb_color_keys[mgr->id] = *ck;
 386
 387                 r = mgr->set_manager_info(mgr, &info);
 388                 if (r)
 389                         return r;
 390
 391                 r = mgr->apply(mgr);
 392
 393                 return r;
 394         }
 395
 396         switch (ck->key_type) {
 397         case OMAPFB_COLOR_KEY_GFX_DST:
 398                 kt = OMAP_DSS_COLOR_KEY_GFX_DST;
 399                 break;
 400         case OMAPFB_COLOR_KEY_VID_SRC:
 401                 kt = OMAP_DSS_COLOR_KEY_VID_SRC;
 402                 break;
 403         default:
 404                 return -EINVAL;
 405         }
 406
 407         info.default_color = ck->background;
 408         info.trans_key = ck->trans_key;
 409         info.trans_key_type = kt;
 410         info.trans_enabled = true;
 411
 412         omapfb_color_keys[mgr->id] = *ck;
 413
 414         r = mgr->set_manager_info(mgr, &info);
 415         if (r)
 416                 return r;
 417
 418         r = mgr->apply(mgr);
 419
 420         return r;
 421 }
 422
 423 static int omapfb_set_color_key(struct fb_info *fbi,
 424                 struct omapfb_color_key *ck)
 425 {
 426         struct omapfb_info *ofbi = FB2OFB(fbi);
 427         struct omapfb2_device *fbdev = ofbi->fbdev;
 428         int r;
 429         int i;
 430         struct omap_overlay_manager *mgr = NULL;
 431
 432         omapfb_lock(fbdev);
 433
 434         for (i = 0; i < ofbi->num_overlays; i++) {
 435                 if (ofbi->overlays[i]->manager) {
 436                         mgr = ofbi->overlays[i]->manager;
 437                         break;
 438                 }
 439         }
 440
 441         if (!mgr) {
 442                 r = -EINVAL;
 443                 goto err;
 444         }
 445
 446         r = _omapfb_set_color_key(mgr, ck);
 447 err:
 448         omapfb_unlock(fbdev);
 449
 450         return r;
 451 }
 452
 453 static int omapfb_get_color_key(struct fb_info *fbi,
 454                 struct omapfb_color_key *ck)
 455 {
 456         struct omapfb_info *ofbi = FB2OFB(fbi);
 457         struct omapfb2_device *fbdev = ofbi->fbdev;
 458         struct omap_overlay_manager *mgr = NULL;
 459         int r = 0;
 460         int i;
 461
 462         omapfb_lock(fbdev);
 463
 464         for (i = 0; i < ofbi->num_overlays; i++) {
 465                 if (ofbi->overlays[i]->manager) {
 466                         mgr = ofbi->overlays[i]->manager;
 467                         break;
 468                 }
 469         }
 470
 471         if (!mgr) {
 472                 r = -EINVAL;
 473                 goto err;
 474         }
 475
 476         *ck = omapfb_color_keys[mgr->id];
 477 err:
 478         omapfb_unlock(fbdev);
 479
 480         return r;
 481 }
 482
 483 static int omapfb_memory_read(struct fb_info *fbi,
 484                 struct omapfb_memory_read *mr)
 485 {
 486         struct omap_dss_device *display = fb2display(fbi);
 487         void *buf;
 488         int r;
 489
 490         if (!display || !display->driver->memory_read)
 491                 return -ENOENT;
 492
 493         if (!access_ok(VERIFY_WRITE, mr->buffer, mr->buffer_size))
 494                 return -EFAULT;
 495
 496         if (mr->w * mr->h * 3 > mr->buffer_size)
 497                 return -EINVAL;
 498
 499         buf = vmalloc(mr->buffer_size);
 500         if (!buf) {
 501                 DBG("vmalloc failed\n");
 502                 return -ENOMEM;
 503         }
 504
 505         r = display->driver->memory_read(display, buf, mr->buffer_size,
 506                         mr->x, mr->y, mr->w, mr->h);
 507
 508         if (r > 0) {
 509                 if (copy_to_user(mr->buffer, buf, mr->buffer_size))
 510                         r = -EFAULT;
 511         }
 512
 513         vfree(buf);
 514
 515         return r;
 516 }
 517
 518 static int omapfb_get_ovl_colormode(struct omapfb2_device *fbdev,
 519                              struct omapfb_ovl_colormode *mode)
 520 {
 521         int ovl_idx = mode->overlay_idx;
 522         int mode_idx = mode->mode_idx;
 523         struct omap_overlay *ovl;
 524         enum omap_color_mode supported_modes;
 525         struct fb_var_screeninfo var;
 526         int i;
 527
 528         if (ovl_idx >= fbdev->num_overlays)
 529                 return -ENODEV;
 530         ovl = fbdev->overlays[ovl_idx];
 531         supported_modes = ovl->supported_modes;
 532
 533         mode_idx = mode->mode_idx;
 534
 535         for (i = 0; i < sizeof(supported_modes) * 8; i++) {
 536                 if (!(supported_modes & (1 << i)))
 537                         continue;
 538                 /*
 539                  * It's possible that the FB doesn't support a mode
 540                  * that is supported by the overlay, so call the
 541                  * following here.
 542                  */
 543                 if (dss_mode_to_fb_mode(1 << i, &var) < 0)
 544                         continue;
 545
 546                 mode_idx--;
 547                 if (mode_idx < 0)
 548                         break;
 549         }
 550
 551         if (i == sizeof(supported_modes) * 8)
 552                 return -ENOENT;
 553
 554         mode->bits_per_pixel = var.bits_per_pixel;
 555         mode->nonstd = var.nonstd;
 556         mode->red = var.red;
 557         mode->green = var.green;
 558         mode->blue = var.blue;
 559         mode->transp = var.transp;
 560
 561         return 0;
 562 }
 563
 564 static int omapfb_wait_for_go(struct fb_info *fbi)
 565 {
 566         struct omapfb_info *ofbi = FB2OFB(fbi);
 567         int r = 0;
 568         int i;
 569
 570         for (i = 0; i < ofbi->num_overlays; ++i) {
 571                 struct omap_overlay *ovl = ofbi->overlays[i];
 572                 r = ovl->wait_for_go(ovl);
 573                 if (r)
 574                         break;
 575         }
 576
 577         return r;
 578 }
 579
 580 int omapfb_ioctl(struct fb_info *fbi, unsigned int cmd, unsigned long arg)
 581 {
 582         struct omapfb_info *ofbi = FB2OFB(fbi);
 583         struct omapfb2_device *fbdev = ofbi->fbdev;
 584         struct omap_dss_device *display = fb2display(fbi);
 585         struct omap_overlay_manager *mgr;
 586
 587         union {
 588                 struct omapfb_update_window_old uwnd_o;
 589                 struct omapfb_update_window     uwnd;
 590                 struct omapfb_plane_info        plane_info;
 591                 struct omapfb_caps              caps;
 592                 struct omapfb_mem_info          mem_info;
 593                 struct omapfb_color_key         color_key;
 594                 struct omapfb_ovl_colormode     ovl_colormode;
 595                 enum omapfb_update_mode         update_mode;
 596                 int test_num;
 597                 struct omapfb_memory_read       memory_read;
 598                 struct omapfb_vram_info         vram_info;
 599                 struct omapfb_tearsync_info     tearsync_info;
 600                 struct omapfb_display_info      display_info;
 601                 u32                             crt;
 602         } p;
 603
 604         int r = 0;
 605
 606         switch (cmd) {
 607         case OMAPFB_SYNC_GFX:
 608                 DBG("ioctl SYNC_GFX\n");
 609                 if (!display || !display->driver->sync) {
 610                         /* DSS1 never returns an error here, so we neither */
 611                         /*r = -EINVAL;*/
 612                         break;
 613                 }
 614
 615                 r = display->driver->sync(display);
 616                 break;
 617
 618         case OMAPFB_UPDATE_WINDOW_OLD:
 619                 DBG("ioctl UPDATE_WINDOW_OLD\n");
 620                 if (!display || !display->driver->update) {
 621                         r = -EINVAL;
 622                         break;
 623                 }
 624
 625                 if (copy_from_user(&p.uwnd_o,
 626                                         (void __user *)arg,
 627                                         sizeof(p.uwnd_o))) {
 628                         r = -EFAULT;
 629                         break;
 630                 }
 631
 632                 r = omapfb_update_window(fbi, p.uwnd_o.x, p.uwnd_o.y,
 633                                 p.uwnd_o.width, p.uwnd_o.height);
 634                 break;
 635
 636         case OMAPFB_UPDATE_WINDOW:
 637                 DBG("ioctl UPDATE_WINDOW\n");
 638                 if (!display || !display->driver->update) {
 639                         r = -EINVAL;
 640                         break;
 641                 }
 642
 643                 if (copy_from_user(&p.uwnd, (void __user *)arg,
 644                                         sizeof(p.uwnd))) {
 645                         r = -EFAULT;
 646                         break;
 647                 }
 648
 649                 r = omapfb_update_window(fbi, p.uwnd.x, p.uwnd.y,
 650                                 p.uwnd.width, p.uwnd.height);
 651                 break;
 652
 653         case OMAPFB_SETUP_PLANE:
 654                 DBG("ioctl SETUP_PLANE\n");
 655                 if (copy_from_user(&p.plane_info, (void __user *)arg,
 656                                         sizeof(p.plane_info)))
 657                         r = -EFAULT;
 658                 else
 659                         r = omapfb_setup_plane(fbi, &p.plane_info);
 660                 break;
 661
 662         case OMAPFB_QUERY_PLANE:
 663                 DBG("ioctl QUERY_PLANE\n");
 664                 r = omapfb_query_plane(fbi, &p.plane_info);
 665                 if (r < 0)
 666                         break;
 667                 if (copy_to_user((void __user *)arg, &p.plane_info,
 668                                         sizeof(p.plane_info)))
 669                         r = -EFAULT;
 670                 break;
 671
 672         case OMAPFB_SETUP_MEM:
 673                 DBG("ioctl SETUP_MEM\n");
 674                 if (copy_from_user(&p.mem_info, (void __user *)arg,
 675                                         sizeof(p.mem_info)))
 676                         r = -EFAULT;
 677                 else
 678                         r = omapfb_setup_mem(fbi, &p.mem_info);
 679                 break;
 680
 681         case OMAPFB_QUERY_MEM:
 682                 DBG("ioctl QUERY_MEM\n");
 683                 r = omapfb_query_mem(fbi, &p.mem_info);
 684                 if (r < 0)
 685                         break;
 686                 if (copy_to_user((void __user *)arg, &p.mem_info,
 687                                         sizeof(p.mem_info)))
 688                         r = -EFAULT;
 689                 break;
 690
 691         case OMAPFB_GET_CAPS:
 692                 DBG("ioctl GET_CAPS\n");
 693                 if (!display) {
 694                         r = -EINVAL;
 695                         break;
 696                 }
 697
 698                 memset(&p.caps, 0, sizeof(p.caps));
 699                 if (display->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE)
 700                         p.caps.ctrl |= OMAPFB_CAPS_MANUAL_UPDATE;
 701                 if (display->caps & OMAP_DSS_DISPLAY_CAP_TEAR_ELIM)
 702                         p.caps.ctrl |= OMAPFB_CAPS_TEARSYNC;
 703
 704                 if (copy_to_user((void __user *)arg, &p.caps, sizeof(p.caps)))
 705                         r = -EFAULT;
 706                 break;
 707
 708         case OMAPFB_GET_OVERLAY_COLORMODE:
 709                 DBG("ioctl GET_OVERLAY_COLORMODE\n");
 710                 if (copy_from_user(&p.ovl_colormode, (void __user *)arg,
 711                                    sizeof(p.ovl_colormode))) {
 712                         r = -EFAULT;
 713                         break;
 714                 }
 715                 r = omapfb_get_ovl_colormode(fbdev, &p.ovl_colormode);
 716                 if (r < 0)
 717                         break;
 718                 if (copy_to_user((void __user *)arg, &p.ovl_colormode,
 719                                  sizeof(p.ovl_colormode)))
 720                         r = -EFAULT;
 721                 break;
 722
 723         case OMAPFB_SET_UPDATE_MODE:
 724                 DBG("ioctl SET_UPDATE_MODE\n");
 725                 if (get_user(p.update_mode, (int __user *)arg))
 726                         r = -EFAULT;
 727                 else
 728                         r = omapfb_set_update_mode(fbi, p.update_mode);
 729                 break;
 730
 731         case OMAPFB_GET_UPDATE_MODE:
 732                 DBG("ioctl GET_UPDATE_MODE\n");
 733                 r = omapfb_get_update_mode(fbi, &p.update_mode);
 734                 if (r)
 735                         break;
 736                 if (put_user(p.update_mode,
 737                                         (enum omapfb_update_mode __user *)arg))
 738                         r = -EFAULT;
 739                 break;
 740
 741         case OMAPFB_SET_COLOR_KEY:
 742                 DBG("ioctl SET_COLOR_KEY\n");
 743                 if (copy_from_user(&p.color_key, (void __user *)arg,
 744                                    sizeof(p.color_key)))
 745                         r = -EFAULT;
 746                 else
 747                         r = omapfb_set_color_key(fbi, &p.color_key);
 748                 break;
 749
 750         case OMAPFB_GET_COLOR_KEY:
 751                 DBG("ioctl GET_COLOR_KEY\n");
 752                 r = omapfb_get_color_key(fbi, &p.color_key);
 753                 if (r)
 754                         break;
 755                 if (copy_to_user((void __user *)arg, &p.color_key,
 756                                  sizeof(p.color_key)))
 757                         r = -EFAULT;
 758                 break;
 759
 760         case FBIO_WAITFORVSYNC:
 761                 if (get_user(p.crt, (__u32 __user *)arg)) {
 762                         r = -EFAULT;
 763                         break;
 764                 }
 765                 if (p.crt != 0) {
 766                         r = -ENODEV;
 767                         break;
 768                 }
 769                 /* FALLTHROUGH */
 770
 771         case OMAPFB_WAITFORVSYNC:
 772                 DBG("ioctl WAITFORVSYNC\n");
 773
 774                 if (!display) {
 775                         r = -EINVAL;
 776                         break;
 777                 }
 778
 779                 mgr = omapdss_find_mgr_from_display(display);
 780                 if (!mgr) {
 781                         r = -EINVAL;
 782                         break;
 783                 }
 784
 785                 r = mgr->wait_for_vsync(mgr);
 786                 break;
 787
 788         case OMAPFB_WAITFORGO:
 789                 DBG("ioctl WAITFORGO\n");
 790                 if (!display) {
 791                         r = -EINVAL;
 792                         break;
 793                 }
 794
 795                 r = omapfb_wait_for_go(fbi);
 796                 break;
 797
 798         /* LCD and CTRL tests do the same thing for backward
 799          * compatibility */
 800         case OMAPFB_LCD_TEST:
 801                 DBG("ioctl LCD_TEST\n");
 802                 if (get_user(p.test_num, (int __user *)arg)) {
 803                         r = -EFAULT;
 804                         break;
 805                 }
 806                 if (!display || !display->driver->run_test) {
 807                         r = -EINVAL;
 808                         break;
 809                 }
 810
 811                 r = display->driver->run_test(display, p.test_num);
 812
 813                 break;
 814
 815         case OMAPFB_CTRL_TEST:
 816                 DBG("ioctl CTRL_TEST\n");
 817                 if (get_user(p.test_num, (int __user *)arg)) {
 818                         r = -EFAULT;
 819                         break;
 820                 }
 821                 if (!display || !display->driver->run_test) {
 822                         r = -EINVAL;
 823                         break;
 824                 }
 825
 826                 r = display->driver->run_test(display, p.test_num);
 827
 828                 break;
 829
 830         case OMAPFB_MEMORY_READ:
 831                 DBG("ioctl MEMORY_READ\n");
 832
 833                 if (copy_from_user(&p.memory_read, (void __user *)arg,
 834                                         sizeof(p.memory_read))) {
 835                         r = -EFAULT;
 836                         break;
 837                 }
 838
 839                 r = omapfb_memory_read(fbi, &p.memory_read);
 840
 841                 break;
 842
 843         case OMAPFB_GET_VRAM_INFO: {
 844                 DBG("ioctl GET_VRAM_INFO\n");
 845
 846                 /*
 847                  * We don't have the ability to get this vram info anymore.
 848                  * Fill in something that should keep the applications working.
 849                  */
 850                 p.vram_info.total = SZ_1M * 64;
 851                 p.vram_info.free = SZ_1M * 64;
 852                 p.vram_info.largest_free_block = SZ_1M * 64;
 853
 854                 if (copy_to_user((void __user *)arg, &p.vram_info,
 855                                         sizeof(p.vram_info)))
 856                         r = -EFAULT;
 857                 break;
 858         }
 859
 860         case OMAPFB_SET_TEARSYNC: {
 861                 DBG("ioctl SET_TEARSYNC\n");
 862
 863                 if (copy_from_user(&p.tearsync_info, (void __user *)arg,
 864                                         sizeof(p.tearsync_info))) {
 865                         r = -EFAULT;
 866                         break;
 867                 }
 868
 869                 if (!display || !display->driver->enable_te) {
 870                         r = -ENODEV;
 871                         break;
 872                 }
 873
 874                 r = display->driver->enable_te(display,
 875                                 !!p.tearsync_info.enabled);
 876
 877                 break;
 878         }
 879
 880         case OMAPFB_GET_DISPLAY_INFO: {
 881                 u16 xres, yres;
 882
 883                 DBG("ioctl GET_DISPLAY_INFO\n");
 884
 885                 if (display == NULL) {
 886                         r = -ENODEV;
 887                         break;
 888                 }
 889
 890                 display->driver->get_resolution(display, &xres, &yres);
 891
 892                 p.display_info.xres = xres;
 893                 p.display_info.yres = yres;
 894
 895                 if (display->driver->get_dimensions) {
 896                         u32 w, h;
 897                         display->driver->get_dimensions(display, &w, &h);
 898                         p.display_info.width = w;
 899                         p.display_info.height = h;
 900                 } else {
 901                         p.display_info.width = 0;
 902                         p.display_info.height = 0;
 903                 }
 904
 905                 if (copy_to_user((void __user *)arg, &p.display_info,
 906                                         sizeof(p.display_info)))
 907                         r = -EFAULT;
 908                 break;
 909         }
 910
 911         default:
 912                 dev_err(fbdev->dev, "Unknown ioctl 0x%x\n", cmd);
 913                 r = -EINVAL;
 914         }
 915
 916         if (r < 0)
 917                 DBG("ioctl failed: %d\n", r);
 918
 919         return r;
 920 }
 921
 922