drivers/staging/omapdrm/omap_drv.c

   1 /*
   2  * drivers/staging/omapdrm/omap_drv.c
   3  *
   4  * Copyright (C) 2011 Texas Instruments
   5  * Author: Rob Clark <rob@ti.com>
   6  *
   7  * This program is free software; you can redistribute it and/or modify it
   8  * under the terms of the GNU General Public License version 2 as published by
   9  * the Free Software Foundation.
  10  *
  11  * This program is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  14  * more details.
  15  *
  16  * You should have received a copy of the GNU General Public License along with
  17  * this program.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #include "omap_drv.h"
  21
  22 #include "drm_crtc_helper.h"
  23 #include "drm_fb_helper.h"
  24 #include "omap_dmm_tiler.h"
  25
  26 #define DRIVER_NAME             MODULE_NAME
  27 #define DRIVER_DESC             "OMAP DRM"
  28 #define DRIVER_DATE             "20110917"
  29 #define DRIVER_MAJOR            1
  30 #define DRIVER_MINOR            0
  31 #define DRIVER_PATCHLEVEL       0
  32
  33 struct drm_device *drm_device;
  34
  35 static int num_crtc = CONFIG_DRM_OMAP_NUM_CRTCS;
  36
  37 MODULE_PARM_DESC(num_crtc, "Number of overlays to use as CRTCs");
  38 module_param(num_crtc, int, 0600);
  39
  40 /*
  41  * mode config funcs
  42  */
  43
  44 /* Notes about mapping DSS and DRM entities:
  45  *    CRTC:        overlay
  46  *    encoder:     manager.. with some extension to allow one primary CRTC
  47  *                 and zero or more video CRTC's to be mapped to one encoder?
  48  *    connector:   dssdev.. manager can be attached/detached from different
  49  *                 devices
  50  */
  51
  52 static void omap_fb_output_poll_changed(struct drm_device *dev)
  53 {
  54         struct omap_drm_private *priv = dev->dev_private;
  55         DBG("dev=%p", dev);
  56         if (priv->fbdev) {
  57                 drm_fb_helper_hotplug_event(priv->fbdev);
  58         }
  59 }
  60
  61 static const struct drm_mode_config_funcs omap_mode_config_funcs = {
  62         .fb_create = omap_framebuffer_create,
  63         .output_poll_changed = omap_fb_output_poll_changed,
  64 };
  65
  66 static int get_connector_type(struct omap_dss_device *dssdev)
  67 {
  68         switch (dssdev->type) {
  69         case OMAP_DISPLAY_TYPE_HDMI:
  70                 return DRM_MODE_CONNECTOR_HDMIA;
  71         case OMAP_DISPLAY_TYPE_DPI:
  72                 if (!strcmp(dssdev->name, "dvi"))
  73                         return DRM_MODE_CONNECTOR_DVID;
  74                 /* fallthrough */
  75         default:
  76                 return DRM_MODE_CONNECTOR_Unknown;
  77         }
  78 }
  79
  80 #if 0 /* enable when dss2 supports hotplug */
  81 static int omap_drm_notifier(struct notifier_block *nb,
  82                 unsigned long evt, void *arg)
  83 {
  84         switch (evt) {
  85         case OMAP_DSS_SIZE_CHANGE:
  86         case OMAP_DSS_HOTPLUG_CONNECT:
  87         case OMAP_DSS_HOTPLUG_DISCONNECT: {
  88                 struct drm_device *dev = drm_device;
  89                 DBG("hotplug event: evt=%d, dev=%p", evt, dev);
  90                 if (dev) {
  91                         drm_sysfs_hotplug_event(dev);
  92                 }
  93                 return NOTIFY_OK;
  94         }
  95         default:  /* don't care about other events for now */
  96                 return NOTIFY_DONE;
  97         }
  98 }
  99 #endif
 100
 101 static void dump_video_chains(void)
 102 {
 103         int i;
 104
 105         DBG("dumping video chains: ");
 106         for (i = 0; i < omap_dss_get_num_overlays(); i++) {
 107                 struct omap_overlay *ovl = omap_dss_get_overlay(i);
 108                 struct omap_overlay_manager *mgr = ovl->manager;
 109                 struct omap_dss_device *dssdev = mgr ?
 110                                         mgr->get_device(mgr) : NULL;
 111                 if (dssdev) {
 112                         DBG("%d: %s -> %s -> %s", i, ovl->name, mgr->name,
 113                                                 dssdev->name);
 114                 } else if (mgr) {
 115                         DBG("%d: %s -> %s", i, ovl->name, mgr->name);
 116                 } else {
 117                         DBG("%d: %s", i, ovl->name);
 118                 }
 119         }
 120 }
 121
 122 /* create encoders for each manager */
 123 static int create_encoder(struct drm_device *dev,
 124                 struct omap_overlay_manager *mgr)
 125 {
 126         struct omap_drm_private *priv = dev->dev_private;
 127         struct drm_encoder *encoder = omap_encoder_init(dev, mgr);
 128
 129         if (!encoder) {
 130                 dev_err(dev->dev, "could not create encoder: %s\n",
 131                                 mgr->name);
 132                 return -ENOMEM;
 133         }
 134
 135         BUG_ON(priv->num_encoders >= ARRAY_SIZE(priv->encoders));
 136
 137         priv->encoders[priv->num_encoders++] = encoder;
 138
 139         return 0;
 140 }
 141
 142 /* create connectors for each display device */
 143 static int create_connector(struct drm_device *dev,
 144                 struct omap_dss_device *dssdev)
 145 {
 146         struct omap_drm_private *priv = dev->dev_private;
 147         static struct notifier_block *notifier;
 148         struct drm_connector *connector;
 149         int j;
 150
 151         if (!dssdev->driver) {
 152                 dev_warn(dev->dev, "%s has no driver.. skipping it\n",
 153                                 dssdev->name);
 154                 return 0;
 155         }
 156
 157         if (!(dssdev->driver->get_timings ||
 158                                 dssdev->driver->read_edid)) {
 159                 dev_warn(dev->dev, "%s driver does not support "
 160                         "get_timings or read_edid.. skipping it!\n",
 161                         dssdev->name);
 162                 return 0;
 163         }
 164
 165         connector = omap_connector_init(dev,
 166                         get_connector_type(dssdev), dssdev);
 167
 168         if (!connector) {
 169                 dev_err(dev->dev, "could not create connector: %s\n",
 170                                 dssdev->name);
 171                 return -ENOMEM;
 172         }
 173
 174         BUG_ON(priv->num_connectors >= ARRAY_SIZE(priv->connectors));
 175
 176         priv->connectors[priv->num_connectors++] = connector;
 177
 178 #if 0 /* enable when dss2 supports hotplug */
 179         notifier = kzalloc(sizeof(struct notifier_block), GFP_KERNEL);
 180         notifier->notifier_call = omap_drm_notifier;
 181         omap_dss_add_notify(dssdev, notifier);
 182 #else
 183         notifier = NULL;
 184 #endif
 185
 186         for (j = 0; j < priv->num_encoders; j++) {
 187                 struct omap_overlay_manager *mgr =
 188                         omap_encoder_get_manager(priv->encoders[j]);
 189                 if (mgr->get_device(mgr) == dssdev) {
 190                         drm_mode_connector_attach_encoder(connector,
 191                                         priv->encoders[j]);
 192                 }
 193         }
 194
 195         return 0;
 196 }
 197
 198 /* create up to max_overlays CRTCs mapping to overlays.. by default,
 199  * connect the overlays to different managers/encoders, giving priority
 200  * to encoders connected to connectors with a detected connection
 201  */
 202 static int create_crtc(struct drm_device *dev, struct omap_overlay *ovl,
 203                 int *j, unsigned int connected_connectors)
 204 {
 205         struct omap_drm_private *priv = dev->dev_private;
 206         struct omap_overlay_manager *mgr = NULL;
 207         struct drm_crtc *crtc;
 208
 209         /* find next best connector, ones with detected connection first
 210          */
 211         while (*j < priv->num_connectors && !mgr) {
 212                 if (connected_connectors & (1 << *j)) {
 213                         struct drm_encoder *encoder =
 214                                 omap_connector_attached_encoder(
 215                                                 priv->connectors[*j]);
 216                         if (encoder) {
 217                                 mgr = omap_encoder_get_manager(encoder);
 218                         }
 219                 }
 220                 (*j)++;
 221         }
 222
 223         /* if we couldn't find another connected connector, lets start
 224          * looking at the unconnected connectors:
 225          *
 226          * note: it might not be immediately apparent, but thanks to
 227          * the !mgr check in both this loop and the one above, the only
 228          * way to enter this loop is with *j == priv->num_connectors,
 229          * so idx can never go negative.
 230          */
 231         while (*j < 2 * priv->num_connectors && !mgr) {
 232                 int idx = *j - priv->num_connectors;
 233                 if (!(connected_connectors & (1 << idx))) {
 234                         struct drm_encoder *encoder =
 235                                 omap_connector_attached_encoder(
 236                                                 priv->connectors[idx]);
 237                         if (encoder) {
 238                                 mgr = omap_encoder_get_manager(encoder);
 239                         }
 240                 }
 241                 (*j)++;
 242         }
 243
 244         crtc = omap_crtc_init(dev, ovl, priv->num_crtcs);
 245
 246         if (!crtc) {
 247                 dev_err(dev->dev, "could not create CRTC: %s\n",
 248                                 ovl->name);
 249                 return -ENOMEM;
 250         }
 251
 252         BUG_ON(priv->num_crtcs >= ARRAY_SIZE(priv->crtcs));
 253
 254         priv->crtcs[priv->num_crtcs++] = crtc;
 255
 256         return 0;
 257 }
 258
 259 static int create_plane(struct drm_device *dev, struct omap_overlay *ovl,
 260                 unsigned int possible_crtcs)
 261 {
 262         struct omap_drm_private *priv = dev->dev_private;
 263         struct drm_plane *plane =
 264                         omap_plane_init(dev, ovl, possible_crtcs, false);
 265
 266         if (!plane) {
 267                 dev_err(dev->dev, "could not create plane: %s\n",
 268                                 ovl->name);
 269                 return -ENOMEM;
 270         }
 271
 272         BUG_ON(priv->num_planes >= ARRAY_SIZE(priv->planes));
 273
 274         priv->planes[priv->num_planes++] = plane;
 275
 276         return 0;
 277 }
 278
 279 static int match_dev_name(struct omap_dss_device *dssdev, void *data)
 280 {
 281         return !strcmp(dssdev->name, data);
 282 }
 283
 284 static unsigned int detect_connectors(struct drm_device *dev)
 285 {
 286         struct omap_drm_private *priv = dev->dev_private;
 287         unsigned int connected_connectors = 0;
 288         int i;
 289
 290         for (i = 0; i < priv->num_connectors; i++) {
 291                 struct drm_connector *connector = priv->connectors[i];
 292                 if (omap_connector_detect(connector, true) ==
 293                                 connector_status_connected) {
 294                         connected_connectors |= (1 << i);
 295                 }
 296         }
 297
 298         return connected_connectors;
 299 }
 300
 301 static int omap_modeset_init(struct drm_device *dev)
 302 {
 303         const struct omap_drm_platform_data *pdata = dev->dev->platform_data;
 304         struct omap_kms_platform_data *kms_pdata = NULL;
 305         struct omap_drm_private *priv = dev->dev_private;
 306         struct omap_dss_device *dssdev = NULL;
 307         int i, j;
 308         unsigned int connected_connectors = 0;
 309
 310         drm_mode_config_init(dev);
 311
 312         if (pdata && pdata->kms_pdata) {
 313                 kms_pdata = pdata->kms_pdata;
 314
 315                 /* if platform data is provided by the board file, use it to
 316                  * control which overlays, managers, and devices we own.
 317                  */
 318                 for (i = 0; i < kms_pdata->mgr_cnt; i++) {
 319                         struct omap_overlay_manager *mgr =
 320                                 omap_dss_get_overlay_manager(
 321                                                 kms_pdata->mgr_ids[i]);
 322                         create_encoder(dev, mgr);
 323                 }
 324
 325                 for (i = 0; i < kms_pdata->dev_cnt; i++) {
 326                         struct omap_dss_device *dssdev =
 327                                 omap_dss_find_device(
 328                                         (void *)kms_pdata->dev_names[i],
 329                                         match_dev_name);
 330                         if (!dssdev) {
 331                                 dev_warn(dev->dev, "no such dssdev: %s\n",
 332                                                 kms_pdata->dev_names[i]);
 333                                 continue;
 334                         }
 335                         create_connector(dev, dssdev);
 336                 }
 337
 338                 connected_connectors = detect_connectors(dev);
 339
 340                 j = 0;
 341                 for (i = 0; i < kms_pdata->ovl_cnt; i++) {
 342                         struct omap_overlay *ovl =
 343                                 omap_dss_get_overlay(kms_pdata->ovl_ids[i]);
 344                         create_crtc(dev, ovl, &j, connected_connectors);
 345                 }
 346
 347                 for (i = 0; i < kms_pdata->pln_cnt; i++) {
 348                         struct omap_overlay *ovl =
 349                                 omap_dss_get_overlay(kms_pdata->pln_ids[i]);
 350                         create_plane(dev, ovl, (1 << priv->num_crtcs) - 1);
 351                 }
 352         } else {
 353                 /* otherwise just grab up to CONFIG_DRM_OMAP_NUM_CRTCS and try
 354                  * to make educated guesses about everything else
 355                  */
 356                 int max_overlays = min(omap_dss_get_num_overlays(), num_crtc);
 357
 358                 for (i = 0; i < omap_dss_get_num_overlay_managers(); i++) {
 359                         create_encoder(dev, omap_dss_get_overlay_manager(i));
 360                 }
 361
 362                 for_each_dss_dev(dssdev) {
 363                         create_connector(dev, dssdev);
 364                 }
 365
 366                 connected_connectors = detect_connectors(dev);
 367
 368                 j = 0;
 369                 for (i = 0; i < max_overlays; i++) {
 370                         create_crtc(dev, omap_dss_get_overlay(i),
 371                                         &j, connected_connectors);
 372                 }
 373
 374                 /* use any remaining overlays as drm planes */
 375                 for (; i < omap_dss_get_num_overlays(); i++) {
 376                         struct omap_overlay *ovl = omap_dss_get_overlay(i);
 377                         create_plane(dev, ovl, (1 << priv->num_crtcs) - 1);
 378                 }
 379         }
 380
 381         /* for now keep the mapping of CRTCs and encoders static.. */
 382         for (i = 0; i < priv->num_encoders; i++) {
 383                 struct drm_encoder *encoder = priv->encoders[i];
 384                 struct omap_overlay_manager *mgr =
 385                                 omap_encoder_get_manager(encoder);
 386
 387                 encoder->possible_crtcs = (1 << priv->num_crtcs) - 1;
 388
 389                 DBG("%s: possible_crtcs=%08x", mgr->name,
 390                                         encoder->possible_crtcs);
 391         }
 392
 393         dump_video_chains();
 394
 395         dev->mode_config.min_width = 32;
 396         dev->mode_config.min_height = 32;
 397
 398         /* note: eventually will need some cpu_is_omapXYZ() type stuff here
 399          * to fill in these limits properly on different OMAP generations..
 400          */
 401         dev->mode_config.max_width = 2048;
 402         dev->mode_config.max_height = 2048;
 403
 404         dev->mode_config.funcs = &omap_mode_config_funcs;
 405
 406         return 0;
 407 }
 408
 409 static void omap_modeset_free(struct drm_device *dev)
 410 {
 411         drm_mode_config_cleanup(dev);
 412 }
 413
 414 /*
 415  * drm ioctl funcs
 416  */
 417
 418
 419 static int ioctl_get_param(struct drm_device *dev, void *data,
 420                 struct drm_file *file_priv)
 421 {
 422         struct drm_omap_param *args = data;
 423
 424         DBG("%p: param=%llu", dev, args->param);
 425
 426         switch (args->param) {
 427         case OMAP_PARAM_CHIPSET_ID:
 428                 args->value = GET_OMAP_TYPE;
 429                 break;
 430         default:
 431                 DBG("unknown parameter %lld", args->param);
 432                 return -EINVAL;
 433         }
 434
 435         return 0;
 436 }
 437
 438 static int ioctl_set_param(struct drm_device *dev, void *data,
 439                 struct drm_file *file_priv)
 440 {
 441         struct drm_omap_param *args = data;
 442
 443         switch (args->param) {
 444         default:
 445                 DBG("unknown parameter %lld", args->param);
 446                 return -EINVAL;
 447         }
 448
 449         return 0;
 450 }
 451
 452 static int ioctl_gem_new(struct drm_device *dev, void *data,
 453                 struct drm_file *file_priv)
 454 {
 455         struct drm_omap_gem_new *args = data;
 456         DBG("%p:%p: size=0x%08x, flags=%08x", dev, file_priv,
 457                         args->size.bytes, args->flags);
 458         return omap_gem_new_handle(dev, file_priv, args->size,
 459                         args->flags, &args->handle);
 460 }
 461
 462 static int ioctl_gem_cpu_prep(struct drm_device *dev, void *data,
 463                 struct drm_file *file_priv)
 464 {
 465         struct drm_omap_gem_cpu_prep *args = data;
 466         struct drm_gem_object *obj;
 467         int ret;
 468
 469         VERB("%p:%p: handle=%d, op=%x", dev, file_priv, args->handle, args->op);
 470
 471         obj = drm_gem_object_lookup(dev, file_priv, args->handle);
 472         if (!obj) {
 473                 return -ENOENT;
 474         }
 475
 476         ret = omap_gem_op_sync(obj, args->op);
 477
 478         if (!ret) {
 479                 ret = omap_gem_op_start(obj, args->op);
 480         }
 481
 482         drm_gem_object_unreference_unlocked(obj);
 483
 484         return ret;
 485 }
 486
 487 static int ioctl_gem_cpu_fini(struct drm_device *dev, void *data,
 488                 struct drm_file *file_priv)
 489 {
 490         struct drm_omap_gem_cpu_fini *args = data;
 491         struct drm_gem_object *obj;
 492         int ret;
 493
 494         VERB("%p:%p: handle=%d", dev, file_priv, args->handle);
 495
 496         obj = drm_gem_object_lookup(dev, file_priv, args->handle);
 497         if (!obj) {
 498                 return -ENOENT;
 499         }
 500
 501         /* XXX flushy, flushy */
 502         ret = 0;
 503
 504         if (!ret) {
 505                 ret = omap_gem_op_finish(obj, args->op);
 506         }
 507
 508         drm_gem_object_unreference_unlocked(obj);
 509
 510         return ret;
 511 }
 512
 513 static int ioctl_gem_info(struct drm_device *dev, void *data,
 514                 struct drm_file *file_priv)
 515 {
 516         struct drm_omap_gem_info *args = data;
 517         struct drm_gem_object *obj;
 518         int ret = 0;
 519
 520         DBG("%p:%p: handle=%d", dev, file_priv, args->handle);
 521
 522         obj = drm_gem_object_lookup(dev, file_priv, args->handle);
 523         if (!obj) {
 524                 return -ENOENT;
 525         }
 526
 527         args->size = omap_gem_mmap_size(obj);
 528         args->offset = omap_gem_mmap_offset(obj);
 529
 530         drm_gem_object_unreference_unlocked(obj);
 531
 532         return ret;
 533 }
 534
 535 struct drm_ioctl_desc ioctls[DRM_COMMAND_END - DRM_COMMAND_BASE] = {
 536         DRM_IOCTL_DEF_DRV(OMAP_GET_PARAM, ioctl_get_param, DRM_UNLOCKED|DRM_AUTH),
 537         DRM_IOCTL_DEF_DRV(OMAP_SET_PARAM, ioctl_set_param, DRM_UNLOCKED|DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 538         DRM_IOCTL_DEF_DRV(OMAP_GEM_NEW, ioctl_gem_new, DRM_UNLOCKED|DRM_AUTH),
 539         DRM_IOCTL_DEF_DRV(OMAP_GEM_CPU_PREP, ioctl_gem_cpu_prep, DRM_UNLOCKED|DRM_AUTH),
 540         DRM_IOCTL_DEF_DRV(OMAP_GEM_CPU_FINI, ioctl_gem_cpu_fini, DRM_UNLOCKED|DRM_AUTH),
 541         DRM_IOCTL_DEF_DRV(OMAP_GEM_INFO, ioctl_gem_info, DRM_UNLOCKED|DRM_AUTH),
 542 };
 543
 544 /*
 545  * drm driver funcs
 546  */
 547
 548 /**
 549  * load - setup chip and create an initial config
 550  * @dev: DRM device
 551  * @flags: startup flags
 552  *
 553  * The driver load routine has to do several things:
 554  *   - initialize the memory manager
 555  *   - allocate initial config memory
 556  *   - setup the DRM framebuffer with the allocated memory
 557  */
 558 static int dev_load(struct drm_device *dev, unsigned long flags)
 559 {
 560         struct omap_drm_private *priv;
 561         int ret;
 562
 563         DBG("load: dev=%p", dev);
 564
 565         drm_device = dev;
 566
 567         priv = kzalloc(sizeof(*priv), GFP_KERNEL);
 568         if (!priv) {
 569                 dev_err(dev->dev, "could not allocate priv\n");
 570                 return -ENOMEM;
 571         }
 572
 573         dev->dev_private = priv;
 574
 575         priv->wq = alloc_ordered_workqueue("omapdrm", 0);
 576
 577         INIT_LIST_HEAD(&priv->obj_list);
 578
 579         omap_gem_init(dev);
 580
 581         ret = omap_modeset_init(dev);
 582         if (ret) {
 583                 dev_err(dev->dev, "omap_modeset_init failed: ret=%d\n", ret);
 584                 dev->dev_private = NULL;
 585                 kfree(priv);
 586                 return ret;
 587         }
 588
 589         priv->fbdev = omap_fbdev_init(dev);
 590         if (!priv->fbdev) {
 591                 dev_warn(dev->dev, "omap_fbdev_init failed\n");
 592                 /* well, limp along without an fbdev.. maybe X11 will work? */
 593         }
 594
 595         drm_kms_helper_poll_init(dev);
 596
 597         ret = drm_vblank_init(dev, priv->num_crtcs);
 598         if (ret) {
 599                 dev_warn(dev->dev, "could not init vblank\n");
 600         }
 601
 602         return 0;
 603 }
 604
 605 static int dev_unload(struct drm_device *dev)
 606 {
 607         struct omap_drm_private *priv = dev->dev_private;
 608
 609         DBG("unload: dev=%p", dev);
 610
 611         drm_vblank_cleanup(dev);
 612         drm_kms_helper_poll_fini(dev);
 613
 614         omap_fbdev_free(dev);
 615         omap_modeset_free(dev);
 616         omap_gem_deinit(dev);
 617
 618         flush_workqueue(priv->wq);
 619         destroy_workqueue(priv->wq);
 620
 621         kfree(dev->dev_private);
 622         dev->dev_private = NULL;
 623
 624         return 0;
 625 }
 626
 627 static int dev_open(struct drm_device *dev, struct drm_file *file)
 628 {
 629         file->driver_priv = NULL;
 630
 631         DBG("open: dev=%p, file=%p", dev, file);
 632
 633         return 0;
 634 }
 635
 636 static int dev_firstopen(struct drm_device *dev)
 637 {
 638         DBG("firstopen: dev=%p", dev);
 639         return 0;
 640 }
 641
 642 /**
 643  * lastclose - clean up after all DRM clients have exited
 644  * @dev: DRM device
 645  *
 646  * Take care of cleaning up after all DRM clients have exited.  In the
 647  * mode setting case, we want to restore the kernel's initial mode (just
 648  * in case the last client left us in a bad state).
 649  */
 650 static void dev_lastclose(struct drm_device *dev)
 651 {
 652         int i;
 653
 654         /* we don't support vga-switcheroo.. so just make sure the fbdev
 655          * mode is active
 656          */
 657         struct omap_drm_private *priv = dev->dev_private;
 658         int ret;
 659
 660         DBG("lastclose: dev=%p", dev);
 661
 662         /* need to restore default rotation state.. not sure if there is
 663          * a cleaner way to restore properties to default state?  Maybe
 664          * a flag that properties should automatically be restored to
 665          * default state on lastclose?
 666          */
 667         for (i = 0; i < priv->num_crtcs; i++) {
 668                 drm_object_property_set_value(&priv->crtcs[i]->base,
 669                                 priv->rotation_prop, 0);
 670         }
 671
 672         for (i = 0; i < priv->num_planes; i++) {
 673                 drm_object_property_set_value(&priv->planes[i]->base,
 674                                 priv->rotation_prop, 0);
 675         }
 676
 677         ret = drm_fb_helper_restore_fbdev_mode(priv->fbdev);
 678         if (ret)
 679                 DBG("failed to restore crtc mode");
 680 }
 681
 682 static void dev_preclose(struct drm_device *dev, struct drm_file *file)
 683 {
 684         DBG("preclose: dev=%p", dev);
 685 }
 686
 687 static void dev_postclose(struct drm_device *dev, struct drm_file *file)
 688 {
 689         DBG("postclose: dev=%p, file=%p", dev, file);
 690 }
 691
 692 /**
 693  * enable_vblank - enable vblank interrupt events
 694  * @dev: DRM device
 695  * @crtc: which irq to enable
 696  *
 697  * Enable vblank interrupts for @crtc.  If the device doesn't have
 698  * a hardware vblank counter, this routine should be a no-op, since
 699  * interrupts will have to stay on to keep the count accurate.
 700  *
 701  * RETURNS
 702  * Zero on success, appropriate errno if the given @crtc's vblank
 703  * interrupt cannot be enabled.
 704  */
 705 static int dev_enable_vblank(struct drm_device *dev, int crtc)
 706 {
 707         DBG("enable_vblank: dev=%p, crtc=%d", dev, crtc);
 708         return 0;
 709 }
 710
 711 /**
 712  * disable_vblank - disable vblank interrupt events
 713  * @dev: DRM device
 714  * @crtc: which irq to enable
 715  *
 716  * Disable vblank interrupts for @crtc.  If the device doesn't have
 717  * a hardware vblank counter, this routine should be a no-op, since
 718  * interrupts will have to stay on to keep the count accurate.
 719  */
 720 static void dev_disable_vblank(struct drm_device *dev, int crtc)
 721 {
 722         DBG("disable_vblank: dev=%p, crtc=%d", dev, crtc);
 723 }
 724
 725 static irqreturn_t dev_irq_handler(DRM_IRQ_ARGS)
 726 {
 727         return IRQ_HANDLED;
 728 }
 729
 730 static void dev_irq_preinstall(struct drm_device *dev)
 731 {
 732         DBG("irq_preinstall: dev=%p", dev);
 733 }
 734
 735 static int dev_irq_postinstall(struct drm_device *dev)
 736 {
 737         DBG("irq_postinstall: dev=%p", dev);
 738         return 0;
 739 }
 740
 741 static void dev_irq_uninstall(struct drm_device *dev)
 742 {
 743         DBG("irq_uninstall: dev=%p", dev);
 744 }
 745
 746 static const struct vm_operations_struct omap_gem_vm_ops = {
 747         .fault = omap_gem_fault,
 748         .open = drm_gem_vm_open,
 749         .close = drm_gem_vm_close,
 750 };
 751
 752 static const struct file_operations omapdriver_fops = {
 753                 .owner = THIS_MODULE,
 754                 .open = drm_open,
 755                 .unlocked_ioctl = drm_ioctl,
 756                 .release = drm_release,
 757                 .mmap = omap_gem_mmap,
 758                 .poll = drm_poll,
 759                 .fasync = drm_fasync,
 760                 .read = drm_read,
 761                 .llseek = noop_llseek,
 762 };
 763
 764 static struct drm_driver omap_drm_driver = {
 765                 .driver_features =
 766                                 DRIVER_HAVE_IRQ | DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME,
 767                 .load = dev_load,
 768                 .unload = dev_unload,
 769                 .open = dev_open,
 770                 .firstopen = dev_firstopen,
 771                 .lastclose = dev_lastclose,
 772                 .preclose = dev_preclose,
 773                 .postclose = dev_postclose,
 774                 .get_vblank_counter = drm_vblank_count,
 775                 .enable_vblank = dev_enable_vblank,
 776                 .disable_vblank = dev_disable_vblank,
 777                 .irq_preinstall = dev_irq_preinstall,
 778                 .irq_postinstall = dev_irq_postinstall,
 779                 .irq_uninstall = dev_irq_uninstall,
 780                 .irq_handler = dev_irq_handler,
 781 #ifdef CONFIG_DEBUG_FS
 782                 .debugfs_init = omap_debugfs_init,
 783                 .debugfs_cleanup = omap_debugfs_cleanup,
 784 #endif
 785                 .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
 786                 .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
 787                 .gem_prime_export = omap_gem_prime_export,
 788                 .gem_prime_import = omap_gem_prime_import,
 789                 .gem_init_object = omap_gem_init_object,
 790                 .gem_free_object = omap_gem_free_object,
 791                 .gem_vm_ops = &omap_gem_vm_ops,
 792                 .dumb_create = omap_gem_dumb_create,
 793                 .dumb_map_offset = omap_gem_dumb_map_offset,
 794                 .dumb_destroy = omap_gem_dumb_destroy,
 795                 .ioctls = ioctls,
 796                 .num_ioctls = DRM_OMAP_NUM_IOCTLS,
 797                 .fops = &omapdriver_fops,
 798                 .name = DRIVER_NAME,
 799                 .desc = DRIVER_DESC,
 800                 .date = DRIVER_DATE,
 801                 .major = DRIVER_MAJOR,
 802                 .minor = DRIVER_MINOR,
 803                 .patchlevel = DRIVER_PATCHLEVEL,
 804 };
 805
 806 static int pdev_suspend(struct platform_device *pDevice, pm_message_t state)
 807 {
 808         DBG("");
 809         return 0;
 810 }
 811
 812 static int pdev_resume(struct platform_device *device)
 813 {
 814         DBG("");
 815         return 0;
 816 }
 817
 818 static void pdev_shutdown(struct platform_device *device)
 819 {
 820         DBG("");
 821 }
 822
 823 static int pdev_probe(struct platform_device *device)
 824 {
 825         DBG("%s", device->name);
 826         return drm_platform_init(&omap_drm_driver, device);
 827 }
 828
 829 static int pdev_remove(struct platform_device *device)
 830 {
 831         DBG("");
 832         drm_platform_exit(&omap_drm_driver, device);
 833
 834         platform_driver_unregister(&omap_dmm_driver);
 835         return 0;
 836 }
 837
 838 struct platform_driver pdev = {
 839                 .driver = {
 840                         .name = DRIVER_NAME,
 841                         .owner = THIS_MODULE,
 842                 },
 843                 .probe = pdev_probe,
 844                 .remove = pdev_remove,
 845                 .suspend = pdev_suspend,
 846                 .resume = pdev_resume,
 847                 .shutdown = pdev_shutdown,
 848 };
 849
 850 static int __init omap_drm_init(void)
 851 {
 852         DBG("init");
 853         if (platform_driver_register(&omap_dmm_driver)) {
 854                 /* we can continue on without DMM.. so not fatal */
 855                 dev_err(NULL, "DMM registration failed\n");
 856         }
 857         return platform_driver_register(&pdev);
 858 }
 859
 860 static void __exit omap_drm_fini(void)
 861 {
 862         DBG("fini");
 863         platform_driver_unregister(&pdev);
 864 }
 865
 866 /* need late_initcall() so we load after dss_driver's are loaded */
 867 late_initcall(omap_drm_init);
 868 module_exit(omap_drm_fini);
 869
 870 MODULE_AUTHOR("Rob Clark <rob@ti.com>");
 871 MODULE_DESCRIPTION("OMAP DRM Display Driver");
 872 MODULE_ALIAS("platform:" DRIVER_NAME);
 873 MODULE_LICENSE("GPL v2");