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

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * linux/drivers/video/omap2/omapfb-ioctl.c
   4  *
   5  * Copyright (C) 2008 Nokia Corporation
   6  * Author: Tomi Valkeinen <tomi.valkeinen@nokia.com>
   7  *
   8  * Some code and ideas taken from drivers/video/omap/ driver
   9  * by Imre Deak.
  10  */
  11
  12 #include <linux/fb.h>
  13 #include <linux/device.h>
  14 #include <linux/uaccess.h>
  15 #include <linux/platform_device.h>
  16 #include <linux/mm.h>
  17 #include <linux/omapfb.h>
  18 #include <linux/vmalloc.h>
  19 #include <linux/export.h>
  20 #include <linux/sizes.h>
  21
  22 #include <video/omapfb_dss.h>
  23 #include <video/omapvrfb.h>
  24
  25 #include "omapfb.h"
  26
  27 static u8 get_mem_idx(struct omapfb_info *ofbi)
  28 {
  29         if (ofbi->id == ofbi->region->id)
  30                 return 0;
  31
  32         return OMAPFB_MEM_IDX_ENABLED | ofbi->region->id;
  33 }
  34
  35 static struct omapfb2_mem_region *get_mem_region(struct omapfb_info *ofbi,
  36                                                  u8 mem_idx)
  37 {
  38         struct omapfb2_device *fbdev = ofbi->fbdev;
  39
  40         if (mem_idx & OMAPFB_MEM_IDX_ENABLED)
  41                 mem_idx &= OMAPFB_MEM_IDX_MASK;
  42         else
  43                 mem_idx = ofbi->id;
  44
  45         if (mem_idx >= fbdev->num_fbs)
  46                 return NULL;
  47
  48         return &fbdev->regions[mem_idx];
  49 }
  50
  51 static int omapfb_setup_plane(struct fb_info *fbi, struct omapfb_plane_info *pi)
  52 {
  53         struct omapfb_info *ofbi = FB2OFB(fbi);
  54         struct omapfb2_device *fbdev = ofbi->fbdev;
  55         struct omap_overlay *ovl;
  56         struct omap_overlay_info old_info;
  57         struct omapfb2_mem_region *old_rg, *new_rg;
  58         int r = 0;
  59
  60         DBG("omapfb_setup_plane\n");
  61
  62         if (ofbi->num_overlays == 0) {
  63                 r = -EINVAL;
  64                 goto out;
  65         }
  66
  67         /* XXX uses only the first overlay */
  68         ovl = ofbi->overlays[0];
  69
  70         old_rg = ofbi->region;
  71         new_rg = get_mem_region(ofbi, pi->mem_idx);
  72         if (!new_rg) {
  73                 r = -EINVAL;
  74                 goto out;
  75         }
  76
  77         /* Take the locks in a specific order to keep lockdep happy */
  78         if (old_rg->id < new_rg->id) {
  79                 omapfb_get_mem_region(old_rg);
  80                 omapfb_get_mem_region(new_rg);
  81         } else if (new_rg->id < old_rg->id) {
  82                 omapfb_get_mem_region(new_rg);
  83                 omapfb_get_mem_region(old_rg);
  84         } else
  85                 omapfb_get_mem_region(old_rg);
  86
  87         if (pi->enabled && !new_rg->size) {
  88                 /*
  89                  * This plane's memory was freed, can't enable it
  90                  * until it's reallocated.
  91                  */
  92                 r = -EINVAL;
  93                 goto put_mem;
  94         }
  95
  96         ovl->get_overlay_info(ovl, &old_info);
  97
  98         if (old_rg != new_rg) {
  99                 ofbi->region = new_rg;
 100                 set_fb_fix(fbi);
 101         }
 102
 103         if (!pi->enabled) {
 104                 r = ovl->disable(ovl);
 105                 if (r)
 106                         goto undo;
 107         }
 108
 109         if (pi->enabled) {
 110                 r = omapfb_setup_overlay(fbi, ovl, pi->pos_x, pi->pos_y,
 111                         pi->out_width, pi->out_height);
 112                 if (r)
 113                         goto undo;
 114         } else {
 115                 struct omap_overlay_info info;
 116
 117                 ovl->get_overlay_info(ovl, &info);
 118
 119                 info.pos_x = pi->pos_x;
 120                 info.pos_y = pi->pos_y;
 121                 info.out_width = pi->out_width;
 122                 info.out_height = pi->out_height;
 123
 124                 r = ovl->set_overlay_info(ovl, &info);
 125                 if (r)
 126                         goto undo;
 127         }
 128
 129         if (ovl->manager) {
 130                 r = ovl->manager->apply(ovl->manager);
 131                 if (r)
 132                         goto undo;
 133         }
 134
 135         if (pi->enabled) {
 136                 r = ovl->enable(ovl);
 137                 if (r)
 138                         goto undo;
 139         }
 140
 141         /* Release the locks in a specific order to keep lockdep happy */
 142         if (old_rg->id > new_rg->id) {
 143                 omapfb_put_mem_region(old_rg);
 144                 omapfb_put_mem_region(new_rg);
 145         } else if (new_rg->id > old_rg->id) {
 146                 omapfb_put_mem_region(new_rg);
 147                 omapfb_put_mem_region(old_rg);
 148         } else
 149                 omapfb_put_mem_region(old_rg);
 150
 151         return 0;
 152
 153  undo:
 154         if (old_rg != new_rg) {
 155                 ofbi->region = old_rg;
 156                 set_fb_fix(fbi);
 157         }
 158
 159         ovl->set_overlay_info(ovl, &old_info);
 160  put_mem:
 161         /* Release the locks in a specific order to keep lockdep happy */
 162         if (old_rg->id > new_rg->id) {
 163                 omapfb_put_mem_region(old_rg);
 164                 omapfb_put_mem_region(new_rg);
 165         } else if (new_rg->id > old_rg->id) {
 166                 omapfb_put_mem_region(new_rg);
 167                 omapfb_put_mem_region(old_rg);
 168         } else
 169                 omapfb_put_mem_region(old_rg);
 170  out:
 171         dev_err(fbdev->dev, "setup_plane failed\n");
 172
 173         return r;
 174 }
 175
 176 static int omapfb_query_plane(struct fb_info *fbi, struct omapfb_plane_info *pi)
 177 {
 178         struct omapfb_info *ofbi = FB2OFB(fbi);
 179
 180         if (ofbi->num_overlays == 0) {
 181                 memset(pi, 0, sizeof(*pi));
 182         } else {
 183                 struct omap_overlay *ovl;
 184                 struct omap_overlay_info ovli;
 185
 186                 ovl = ofbi->overlays[0];
 187                 ovl->get_overlay_info(ovl, &ovli);
 188
 189                 pi->pos_x = ovli.pos_x;
 190                 pi->pos_y = ovli.pos_y;
 191                 pi->enabled = ovl->is_enabled(ovl);
 192                 pi->channel_out = 0; /* xxx */
 193                 pi->mirror = 0;
 194                 pi->mem_idx = get_mem_idx(ofbi);
 195                 pi->out_width = ovli.out_width;
 196                 pi->out_height = ovli.out_height;
 197         }
 198
 199         return 0;
 200 }
 201
 202 static int omapfb_setup_mem(struct fb_info *fbi, struct omapfb_mem_info *mi)
 203 {
 204         struct omapfb_info *ofbi = FB2OFB(fbi);
 205         struct omapfb2_device *fbdev = ofbi->fbdev;
 206         struct omap_dss_device *display = fb2display(fbi);
 207         struct omapfb2_mem_region *rg;
 208         int r = 0, i;
 209         size_t size;
 210
 211         if (mi->type != OMAPFB_MEMTYPE_SDRAM)
 212                 return -EINVAL;
 213
 214         size = PAGE_ALIGN(mi->size);
 215
 216         if (display && display->driver->sync)
 217                 display->driver->sync(display);
 218
 219         rg = ofbi->region;
 220
 221         down_write_nested(&rg->lock, rg->id);
 222         atomic_inc(&rg->lock_count);
 223
 224         if (rg->size == size && rg->type == mi->type)
 225                 goto out;
 226
 227         if (atomic_read(&rg->map_count)) {
 228                 r = -EBUSY;
 229                 goto out;
 230         }
 231
 232         for (i = 0; i < fbdev->num_fbs; i++) {
 233                 struct omapfb_info *ofbi2 = FB2OFB(fbdev->fbs[i]);
 234                 int j;
 235
 236                 if (ofbi2->region != rg)
 237                         continue;
 238
 239                 for (j = 0; j < ofbi2->num_overlays; j++) {
 240                         struct omap_overlay *ovl;
 241                         ovl = ofbi2->overlays[j];
 242                         if (ovl->is_enabled(ovl)) {
 243                                 r = -EBUSY;
 244                                 goto out;
 245                         }
 246                 }
 247         }
 248
 249         r = omapfb_realloc_fbmem(fbi, size, mi->type);
 250         if (r) {
 251                 dev_err(fbdev->dev, "realloc fbmem failed\n");
 252                 goto out;
 253         }
 254
 255  out:
 256         atomic_dec(&rg->lock_count);
 257         up_write(&rg->lock);
 258
 259         return r;
 260 }
 261
 262 static int omapfb_query_mem(struct fb_info *fbi, struct omapfb_mem_info *mi)
 263 {
 264         struct omapfb_info *ofbi = FB2OFB(fbi);
 265         struct omapfb2_mem_region *rg;
 266
 267         rg = omapfb_get_mem_region(ofbi->region);
 268         memset(mi, 0, sizeof(*mi));
 269
 270         mi->size = rg->size;
 271         mi->type = rg->type;
 272
 273         omapfb_put_mem_region(rg);
 274
 275         return 0;
 276 }
 277
 278 static int omapfb_update_window(struct fb_info *fbi,
 279                 u32 x, u32 y, u32 w, u32 h)
 280 {
 281         struct omap_dss_device *display = fb2display(fbi);
 282         u16 dw, dh;
 283
 284         if (!display)
 285                 return 0;
 286
 287         if (w == 0 || h == 0)
 288                 return 0;
 289
 290         display->driver->get_resolution(display, &dw, &dh);
 291
 292         if (x + w > dw || y + h > dh)
 293                 return -EINVAL;
 294
 295         return display->driver->update(display, x, y, w, h);
 296 }
 297
 298 int omapfb_set_update_mode(struct fb_info *fbi,
 299                                    enum omapfb_update_mode mode)
 300 {
 301         struct omap_dss_device *display = fb2display(fbi);
 302         struct omapfb_info *ofbi = FB2OFB(fbi);
 303         struct omapfb2_device *fbdev = ofbi->fbdev;
 304         struct omapfb_display_data *d;
 305         int r;
 306
 307         if (!display)
 308                 return -EINVAL;
 309
 310         if (mode != OMAPFB_AUTO_UPDATE && mode != OMAPFB_MANUAL_UPDATE)
 311                 return -EINVAL;
 312
 313         omapfb_lock(fbdev);
 314
 315         d = get_display_data(fbdev, display);
 316
 317         if (d->update_mode == mode) {
 318                 omapfb_unlock(fbdev);
 319                 return 0;
 320         }
 321
 322         r = 0;
 323
 324         if (display->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) {
 325                 if (mode == OMAPFB_AUTO_UPDATE)
 326                         omapfb_start_auto_update(fbdev, display);
 327                 else /* MANUAL_UPDATE */
 328                         omapfb_stop_auto_update(fbdev, display);
 329
 330                 d->update_mode = mode;
 331         } else { /* AUTO_UPDATE */
 332                 if (mode == OMAPFB_MANUAL_UPDATE)
 333                         r = -EINVAL;
 334         }
 335
 336         omapfb_unlock(fbdev);
 337
 338         return r;
 339 }
 340
 341 int omapfb_get_update_mode(struct fb_info *fbi,
 342                 enum omapfb_update_mode *mode)
 343 {
 344         struct omap_dss_device *display = fb2display(fbi);
 345         struct omapfb_info *ofbi = FB2OFB(fbi);
 346         struct omapfb2_device *fbdev = ofbi->fbdev;
 347         struct omapfb_display_data *d;
 348
 349         if (!display)
 350                 return -EINVAL;
 351
 352         omapfb_lock(fbdev);
 353
 354         d = get_display_data(fbdev, display);
 355
 356         *mode = d->update_mode;
 357
 358         omapfb_unlock(fbdev);
 359
 360         return 0;
 361 }
 362
 363 /* XXX this color key handling is a hack... */
 364 static struct omapfb_color_key omapfb_color_keys[2];
 365
 366 static int _omapfb_set_color_key(struct omap_overlay_manager *mgr,
 367                 struct omapfb_color_key *ck)
 368 {
 369         struct omap_overlay_manager_info info;
 370         enum omap_dss_trans_key_type kt;
 371         int r;
 372
 373         mgr->get_manager_info(mgr, &info);
 374
 375         if (ck->key_type == OMAPFB_COLOR_KEY_DISABLED) {
 376                 info.trans_enabled = false;
 377                 omapfb_color_keys[mgr->id] = *ck;
 378
 379                 r = mgr->set_manager_info(mgr, &info);
 380                 if (r)
 381                         return r;
 382
 383                 r = mgr->apply(mgr);
 384
 385                 return r;
 386         }
 387
 388         switch (ck->key_type) {
 389         case OMAPFB_COLOR_KEY_GFX_DST:
 390                 kt = OMAP_DSS_COLOR_KEY_GFX_DST;
 391                 break;
 392         case OMAPFB_COLOR_KEY_VID_SRC:
 393                 kt = OMAP_DSS_COLOR_KEY_VID_SRC;
 394                 break;
 395         default:
 396                 return -EINVAL;
 397         }
 398
 399         info.default_color = ck->background;
 400         info.trans_key = ck->trans_key;
 401         info.trans_key_type = kt;
 402         info.trans_enabled = true;
 403
 404         omapfb_color_keys[mgr->id] = *ck;
 405
 406         r = mgr->set_manager_info(mgr, &info);
 407         if (r)
 408                 return r;
 409
 410         r = mgr->apply(mgr);
 411
 412         return r;
 413 }
 414
 415 static int omapfb_set_color_key(struct fb_info *fbi,
 416                 struct omapfb_color_key *ck)
 417 {
 418         struct omapfb_info *ofbi = FB2OFB(fbi);
 419         struct omapfb2_device *fbdev = ofbi->fbdev;
 420         int r;
 421         int i;
 422         struct omap_overlay_manager *mgr = NULL;
 423
 424         omapfb_lock(fbdev);
 425
 426         for (i = 0; i < ofbi->num_overlays; i++) {
 427                 if (ofbi->overlays[i]->manager) {
 428                         mgr = ofbi->overlays[i]->manager;
 429                         break;
 430                 }
 431         }
 432
 433         if (!mgr) {
 434                 r = -EINVAL;
 435                 goto err;
 436         }
 437
 438         r = _omapfb_set_color_key(mgr, ck);
 439 err:
 440         omapfb_unlock(fbdev);
 441
 442         return r;
 443 }
 444
 445 static int omapfb_get_color_key(struct fb_info *fbi,
 446                 struct omapfb_color_key *ck)
 447 {
 448         struct omapfb_info *ofbi = FB2OFB(fbi);
 449         struct omapfb2_device *fbdev = ofbi->fbdev;
 450         struct omap_overlay_manager *mgr = NULL;
 451         int r = 0;
 452         int i;
 453
 454         omapfb_lock(fbdev);
 455
 456         for (i = 0; i < ofbi->num_overlays; i++) {
 457                 if (ofbi->overlays[i]->manager) {
 458                         mgr = ofbi->overlays[i]->manager;
 459                         break;
 460                 }
 461         }
 462
 463         if (!mgr) {
 464                 r = -EINVAL;
 465                 goto err;
 466         }
 467
 468         *ck = omapfb_color_keys[mgr->id];
 469 err:
 470         omapfb_unlock(fbdev);
 471
 472         return r;
 473 }
 474
 475 static int omapfb_memory_read(struct fb_info *fbi,
 476                 struct omapfb_memory_read *mr)
 477 {
 478         struct omap_dss_device *display = fb2display(fbi);
 479         void *buf;
 480         int r;
 481
 482         if (!display || !display->driver->memory_read)
 483                 return -ENOENT;
 484
 485         if (!access_ok(mr->buffer, mr->buffer_size))
 486                 return -EFAULT;
 487
 488         if (mr->w > 4096 || mr->h > 4096)
 489                 return -EINVAL;
 490
 491         if (mr->w * mr->h * 3 > mr->buffer_size)
 492                 return -EINVAL;
 493
 494         buf = vmalloc(mr->buffer_size);
 495         if (!buf) {
 496                 DBG("vmalloc failed\n");
 497                 return -ENOMEM;
 498         }
 499
 500         r = display->driver->memory_read(display, buf, mr->buffer_size,
 501                         mr->x, mr->y, mr->w, mr->h);
 502
 503         if (r > 0) {
 504                 if (copy_to_user(mr->buffer, buf, r))
 505                         r = -EFAULT;
 506         }
 507
 508         vfree(buf);
 509
 510         return r;
 511 }
 512
 513 static int omapfb_get_ovl_colormode(struct omapfb2_device *fbdev,
 514                              struct omapfb_ovl_colormode *mode)
 515 {
 516         int ovl_idx = mode->overlay_idx;
 517         int mode_idx = mode->mode_idx;
 518         struct omap_overlay *ovl;
 519         enum omap_color_mode supported_modes;
 520         struct fb_var_screeninfo var;
 521         int i;
 522
 523         if (ovl_idx >= fbdev->num_overlays)
 524                 return -ENODEV;
 525         ovl = fbdev->overlays[ovl_idx];
 526         supported_modes = ovl->supported_modes;
 527
 528         mode_idx = mode->mode_idx;
 529
 530         for (i = 0; i < sizeof(supported_modes) * 8; i++) {
 531                 if (!(supported_modes & (1 << i)))
 532                         continue;
 533                 /*
 534                  * It's possible that the FB doesn't support a mode
 535                  * that is supported by the overlay, so call the
 536                  * following here.
 537                  */
 538                 if (dss_mode_to_fb_mode(1 << i, &var) < 0)
 539                         continue;
 540
 541                 mode_idx--;
 542                 if (mode_idx < 0)
 543                         break;
 544         }
 545
 546         if (i == sizeof(supported_modes) * 8)
 547                 return -ENOENT;
 548
 549         mode->bits_per_pixel = var.bits_per_pixel;
 550         mode->nonstd = var.nonstd;
 551         mode->red = var.red;
 552         mode->green = var.green;
 553         mode->blue = var.blue;
 554         mode->transp = var.transp;
 555
 556         return 0;
 557 }
 558
 559 static int omapfb_wait_for_go(struct fb_info *fbi)
 560 {
 561         struct omapfb_info *ofbi = FB2OFB(fbi);
 562         int r = 0;
 563         int i;
 564
 565         for (i = 0; i < ofbi->num_overlays; ++i) {
 566                 struct omap_overlay *ovl = ofbi->overlays[i];
 567                 r = ovl->wait_for_go(ovl);
 568                 if (r)
 569                         break;
 570         }
 571
 572         return r;
 573 }
 574
 575 int omapfb_ioctl(struct fb_info *fbi, unsigned int cmd, unsigned long arg)
 576 {
 577         struct omapfb_info *ofbi = FB2OFB(fbi);
 578         struct omapfb2_device *fbdev = ofbi->fbdev;
 579         struct omap_dss_device *display = fb2display(fbi);
 580         struct omap_overlay_manager *mgr;
 581
 582         union {
 583                 struct omapfb_update_window_old uwnd_o;
 584                 struct omapfb_update_window     uwnd;
 585                 struct omapfb_plane_info        plane_info;
 586                 struct omapfb_caps              caps;
 587                 struct omapfb_mem_info          mem_info;
 588                 struct omapfb_color_key         color_key;
 589                 struct omapfb_ovl_colormode     ovl_colormode;
 590                 enum omapfb_update_mode         update_mode;
 591                 int test_num;
 592                 struct omapfb_memory_read       memory_read;
 593                 struct omapfb_vram_info         vram_info;
 594                 struct omapfb_tearsync_info     tearsync_info;
 595                 struct omapfb_display_info      display_info;
 596                 u32                             crt;
 597         } p;
 598
 599         int r = 0;
 600
 601         memset(&p, 0, sizeof(p));
 602
 603         switch (cmd) {
 604         case OMAPFB_SYNC_GFX:
 605                 DBG("ioctl SYNC_GFX\n");
 606                 if (!display || !display->driver->sync) {
 607                         /* DSS1 never returns an error here, so we neither */
 608                         /*r = -EINVAL;*/
 609                         break;
 610                 }
 611
 612                 r = display->driver->sync(display);
 613                 break;
 614
 615         case OMAPFB_UPDATE_WINDOW_OLD:
 616                 DBG("ioctl UPDATE_WINDOW_OLD\n");
 617                 if (!display || !display->driver->update) {
 618                         r = -EINVAL;
 619                         break;
 620                 }
 621
 622                 if (copy_from_user(&p.uwnd_o,
 623                                         (void __user *)arg,
 624                                         sizeof(p.uwnd_o))) {
 625                         r = -EFAULT;
 626                         break;
 627                 }
 628
 629                 r = omapfb_update_window(fbi, p.uwnd_o.x, p.uwnd_o.y,
 630                                 p.uwnd_o.width, p.uwnd_o.height);
 631                 break;
 632
 633         case OMAPFB_UPDATE_WINDOW:
 634                 DBG("ioctl UPDATE_WINDOW\n");
 635                 if (!display || !display->driver->update) {
 636                         r = -EINVAL;
 637                         break;
 638                 }
 639
 640                 if (copy_from_user(&p.uwnd, (void __user *)arg,
 641                                         sizeof(p.uwnd))) {
 642                         r = -EFAULT;
 643                         break;
 644                 }
 645
 646                 r = omapfb_update_window(fbi, p.uwnd.x, p.uwnd.y,
 647                                 p.uwnd.width, p.uwnd.height);
 648                 break;
 649
 650         case OMAPFB_SETUP_PLANE:
 651                 DBG("ioctl SETUP_PLANE\n");
 652                 if (copy_from_user(&p.plane_info, (void __user *)arg,
 653                                         sizeof(p.plane_info)))
 654                         r = -EFAULT;
 655                 else
 656                         r = omapfb_setup_plane(fbi, &p.plane_info);
 657                 break;
 658
 659         case OMAPFB_QUERY_PLANE:
 660                 DBG("ioctl QUERY_PLANE\n");
 661                 r = omapfb_query_plane(fbi, &p.plane_info);
 662                 if (r < 0)
 663                         break;
 664                 if (copy_to_user((void __user *)arg, &p.plane_info,
 665                                         sizeof(p.plane_info)))
 666                         r = -EFAULT;
 667                 break;
 668
 669         case OMAPFB_SETUP_MEM:
 670                 DBG("ioctl SETUP_MEM\n");
 671                 if (copy_from_user(&p.mem_info, (void __user *)arg,
 672                                         sizeof(p.mem_info)))
 673                         r = -EFAULT;
 674                 else
 675                         r = omapfb_setup_mem(fbi, &p.mem_info);
 676                 break;
 677
 678         case OMAPFB_QUERY_MEM:
 679                 DBG("ioctl QUERY_MEM\n");
 680                 r = omapfb_query_mem(fbi, &p.mem_info);
 681                 if (r < 0)
 682                         break;
 683                 if (copy_to_user((void __user *)arg, &p.mem_info,
 684                                         sizeof(p.mem_info)))
 685                         r = -EFAULT;
 686                 break;
 687
 688         case OMAPFB_GET_CAPS:
 689                 DBG("ioctl GET_CAPS\n");
 690                 if (!display) {
 691                         r = -EINVAL;
 692                         break;
 693                 }
 694
 695                 memset(&p.caps, 0, sizeof(p.caps));
 696                 if (display->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE)
 697                         p.caps.ctrl |= OMAPFB_CAPS_MANUAL_UPDATE;
 698                 if (display->caps & OMAP_DSS_DISPLAY_CAP_TEAR_ELIM)
 699                         p.caps.ctrl |= OMAPFB_CAPS_TEARSYNC;
 700
 701                 if (copy_to_user((void __user *)arg, &p.caps, sizeof(p.caps)))
 702                         r = -EFAULT;
 703                 break;
 704
 705         case OMAPFB_GET_OVERLAY_COLORMODE:
 706                 DBG("ioctl GET_OVERLAY_COLORMODE\n");
 707                 if (copy_from_user(&p.ovl_colormode, (void __user *)arg,
 708                                    sizeof(p.ovl_colormode))) {
 709                         r = -EFAULT;
 710                         break;
 711                 }
 712                 r = omapfb_get_ovl_colormode(fbdev, &p.ovl_colormode);
 713                 if (r < 0)
 714                         break;
 715                 if (copy_to_user((void __user *)arg, &p.ovl_colormode,
 716                                  sizeof(p.ovl_colormode)))
 717                         r = -EFAULT;
 718                 break;
 719
 720         case OMAPFB_SET_UPDATE_MODE:
 721                 DBG("ioctl SET_UPDATE_MODE\n");
 722                 if (get_user(p.update_mode, (int __user *)arg))
 723                         r = -EFAULT;
 724                 else
 725                         r = omapfb_set_update_mode(fbi, p.update_mode);
 726                 break;
 727
 728         case OMAPFB_GET_UPDATE_MODE:
 729                 DBG("ioctl GET_UPDATE_MODE\n");
 730                 r = omapfb_get_update_mode(fbi, &p.update_mode);
 731                 if (r)
 732                         break;
 733                 if (put_user(p.update_mode,
 734                                         (enum omapfb_update_mode __user *)arg))
 735                         r = -EFAULT;
 736                 break;
 737
 738         case OMAPFB_SET_COLOR_KEY:
 739                 DBG("ioctl SET_COLOR_KEY\n");
 740                 if (copy_from_user(&p.color_key, (void __user *)arg,
 741                                    sizeof(p.color_key)))
 742                         r = -EFAULT;
 743                 else
 744                         r = omapfb_set_color_key(fbi, &p.color_key);
 745                 break;
 746
 747         case OMAPFB_GET_COLOR_KEY:
 748                 DBG("ioctl GET_COLOR_KEY\n");
 749                 r = omapfb_get_color_key(fbi, &p.color_key);
 750                 if (r)
 751                         break;
 752                 if (copy_to_user((void __user *)arg, &p.color_key,
 753                                  sizeof(p.color_key)))
 754                         r = -EFAULT;
 755                 break;
 756
 757         case FBIO_WAITFORVSYNC:
 758                 if (get_user(p.crt, (__u32 __user *)arg)) {
 759                         r = -EFAULT;
 760                         break;
 761                 }
 762                 if (p.crt != 0) {
 763                         r = -ENODEV;
 764                         break;
 765                 }
 766                 /* FALLTHROUGH */
 767
 768         case OMAPFB_WAITFORVSYNC:
 769                 DBG("ioctl WAITFORVSYNC\n");
 770
 771                 if (!display) {
 772                         r = -EINVAL;
 773                         break;
 774                 }
 775
 776                 mgr = omapdss_find_mgr_from_display(display);
 777                 if (!mgr) {
 778                         r = -EINVAL;
 779                         break;
 780                 }
 781
 782                 r = mgr->wait_for_vsync(mgr);
 783                 break;
 784
 785         case OMAPFB_WAITFORGO:
 786                 DBG("ioctl WAITFORGO\n");
 787                 if (!display) {
 788                         r = -EINVAL;
 789                         break;
 790                 }
 791
 792                 r = omapfb_wait_for_go(fbi);
 793                 break;
 794
 795         /* LCD and CTRL tests do the same thing for backward
 796          * compatibility */
 797         case OMAPFB_LCD_TEST:
 798                 DBG("ioctl LCD_TEST\n");
 799                 if (get_user(p.test_num, (int __user *)arg)) {
 800                         r = -EFAULT;
 801                         break;
 802                 }
 803                 if (!display || !display->driver->run_test) {
 804                         r = -EINVAL;
 805                         break;
 806                 }
 807
 808                 r = display->driver->run_test(display, p.test_num);
 809
 810                 break;
 811
 812         case OMAPFB_CTRL_TEST:
 813                 DBG("ioctl CTRL_TEST\n");
 814                 if (get_user(p.test_num, (int __user *)arg)) {
 815                         r = -EFAULT;
 816                         break;
 817                 }
 818                 if (!display || !display->driver->run_test) {
 819                         r = -EINVAL;
 820                         break;
 821                 }
 822
 823                 r = display->driver->run_test(display, p.test_num);
 824
 825                 break;
 826
 827         case OMAPFB_MEMORY_READ:
 828                 DBG("ioctl MEMORY_READ\n");
 829
 830                 if (copy_from_user(&p.memory_read, (void __user *)arg,
 831                                         sizeof(p.memory_read))) {
 832                         r = -EFAULT;
 833                         break;
 834                 }
 835
 836                 r = omapfb_memory_read(fbi, &p.memory_read);
 837
 838                 break;
 839
 840         case OMAPFB_GET_VRAM_INFO: {
 841                 DBG("ioctl GET_VRAM_INFO\n");
 842
 843                 /*
 844                  * We don't have the ability to get this vram info anymore.
 845                  * Fill in something that should keep the applications working.
 846                  */
 847                 p.vram_info.total = SZ_1M * 64;
 848                 p.vram_info.free = SZ_1M * 64;
 849                 p.vram_info.largest_free_block = SZ_1M * 64;
 850
 851                 if (copy_to_user((void __user *)arg, &p.vram_info,
 852                                         sizeof(p.vram_info)))
 853                         r = -EFAULT;
 854                 break;
 855         }
 856
 857         case OMAPFB_SET_TEARSYNC: {
 858                 DBG("ioctl SET_TEARSYNC\n");
 859
 860                 if (copy_from_user(&p.tearsync_info, (void __user *)arg,
 861                                         sizeof(p.tearsync_info))) {
 862                         r = -EFAULT;
 863                         break;
 864                 }
 865
 866                 if (!display || !display->driver->enable_te) {
 867                         r = -ENODEV;
 868                         break;
 869                 }
 870
 871                 r = display->driver->enable_te(display,
 872                                 !!p.tearsync_info.enabled);
 873
 874                 break;
 875         }
 876
 877         case OMAPFB_GET_DISPLAY_INFO: {
 878                 u16 xres, yres;
 879
 880                 DBG("ioctl GET_DISPLAY_INFO\n");
 881
 882                 if (display == NULL) {
 883                         r = -ENODEV;
 884                         break;
 885                 }
 886
 887                 display->driver->get_resolution(display, &xres, &yres);
 888
 889                 p.display_info.xres = xres;
 890                 p.display_info.yres = yres;
 891
 892                 if (display->driver->get_dimensions) {
 893                         u32 w, h;
 894                         display->driver->get_dimensions(display, &w, &h);
 895                         p.display_info.width = w;
 896                         p.display_info.height = h;
 897                 } else {
 898                         p.display_info.width = 0;
 899                         p.display_info.height = 0;
 900                 }
 901
 902                 if (copy_to_user((void __user *)arg, &p.display_info,
 903                                         sizeof(p.display_info)))
 904                         r = -EFAULT;
 905                 break;
 906         }
 907
 908         default:
 909                 dev_err(fbdev->dev, "Unknown ioctl 0x%x\n", cmd);
 910                 r = -EINVAL;
 911         }
 912
 913         if (r < 0)
 914                 DBG("ioctl failed: %d\n", r);
 915
 916         return r;
 917 }
 918
 919