drivers/gpu/drm/omapdrm/omap_drv.c

   1 /*
   2  * drivers/gpu/drm/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 <linux/sys_soc.h>
  21
  22 #include <drm/drm_atomic.h>
  23 #include <drm/drm_atomic_helper.h>
  24 #include <drm/drm_crtc_helper.h>
  25 #include <drm/drm_fb_helper.h>
  26
  27 #include "omap_dmm_tiler.h"
  28 #include "omap_drv.h"
  29
  30 #define DRIVER_NAME             MODULE_NAME
  31 #define DRIVER_DESC             "OMAP DRM"
  32 #define DRIVER_DATE             "20110917"
  33 #define DRIVER_MAJOR            1
  34 #define DRIVER_MINOR            0
  35 #define DRIVER_PATCHLEVEL       0
  36
  37 /*
  38  * mode config funcs
  39  */
  40
  41 /* Notes about mapping DSS and DRM entities:
  42  *    CRTC:        overlay
  43  *    encoder:     manager.. with some extension to allow one primary CRTC
  44  *                 and zero or more video CRTC's to be mapped to one encoder?
  45  *    connector:   dssdev.. manager can be attached/detached from different
  46  *                 devices
  47  */
  48
  49 static void omap_fb_output_poll_changed(struct drm_device *dev)
  50 {
  51         struct omap_drm_private *priv = dev->dev_private;
  52         DBG("dev=%p", dev);
  53         if (priv->fbdev)
  54                 drm_fb_helper_hotplug_event(priv->fbdev);
  55 }
  56
  57 static void omap_atomic_wait_for_completion(struct drm_device *dev,
  58                                             struct drm_atomic_state *old_state)
  59 {
  60         struct drm_crtc_state *old_crtc_state;
  61         struct drm_crtc *crtc;
  62         unsigned int i;
  63         int ret;
  64
  65         for_each_crtc_in_state(old_state, crtc, old_crtc_state, i) {
  66                 if (!crtc->state->enable)
  67                         continue;
  68
  69                 ret = omap_crtc_wait_pending(crtc);
  70
  71                 if (!ret)
  72                         dev_warn(dev->dev,
  73                                  "atomic complete timeout (pipe %u)!\n", i);
  74         }
  75 }
  76
  77 static void omap_atomic_commit_tail(struct drm_atomic_state *old_state)
  78 {
  79         struct drm_device *dev = old_state->dev;
  80         struct omap_drm_private *priv = dev->dev_private;
  81
  82         priv->dispc_ops->runtime_get();
  83
  84         /* Apply the atomic update. */
  85         drm_atomic_helper_commit_modeset_disables(dev, old_state);
  86
  87         /* With the current dss dispc implementation we have to enable
  88          * the new modeset before we can commit planes. The dispc ovl
  89          * configuration relies on the video mode configuration been
  90          * written into the HW when the ovl configuration is
  91          * calculated.
  92          *
  93          * This approach is not ideal because after a mode change the
  94          * plane update is executed only after the first vblank
  95          * interrupt. The dispc implementation should be fixed so that
  96          * it is able use uncommitted drm state information.
  97          */
  98         drm_atomic_helper_commit_modeset_enables(dev, old_state);
  99         omap_atomic_wait_for_completion(dev, old_state);
 100
 101         drm_atomic_helper_commit_planes(dev, old_state, 0);
 102
 103         drm_atomic_helper_commit_hw_done(old_state);
 104
 105         /*
 106          * Wait for completion of the page flips to ensure that old buffers
 107          * can't be touched by the hardware anymore before cleaning up planes.
 108          */
 109         omap_atomic_wait_for_completion(dev, old_state);
 110
 111         drm_atomic_helper_cleanup_planes(dev, old_state);
 112
 113         priv->dispc_ops->runtime_put();
 114 }
 115
 116 static const struct drm_mode_config_helper_funcs omap_mode_config_helper_funcs = {
 117         .atomic_commit_tail = omap_atomic_commit_tail,
 118 };
 119
 120 static const struct drm_mode_config_funcs omap_mode_config_funcs = {
 121         .fb_create = omap_framebuffer_create,
 122         .output_poll_changed = omap_fb_output_poll_changed,
 123         .atomic_check = drm_atomic_helper_check,
 124         .atomic_commit = drm_atomic_helper_commit,
 125 };
 126
 127 static int get_connector_type(struct omap_dss_device *dssdev)
 128 {
 129         switch (dssdev->type) {
 130         case OMAP_DISPLAY_TYPE_HDMI:
 131                 return DRM_MODE_CONNECTOR_HDMIA;
 132         case OMAP_DISPLAY_TYPE_DVI:
 133                 return DRM_MODE_CONNECTOR_DVID;
 134         case OMAP_DISPLAY_TYPE_DSI:
 135                 return DRM_MODE_CONNECTOR_DSI;
 136         case OMAP_DISPLAY_TYPE_DPI:
 137         case OMAP_DISPLAY_TYPE_DBI:
 138                 return DRM_MODE_CONNECTOR_DPI;
 139         case OMAP_DISPLAY_TYPE_VENC:
 140                 /* TODO: This could also be composite */
 141                 return DRM_MODE_CONNECTOR_SVIDEO;
 142         case OMAP_DISPLAY_TYPE_SDI:
 143                 return DRM_MODE_CONNECTOR_LVDS;
 144         default:
 145                 return DRM_MODE_CONNECTOR_Unknown;
 146         }
 147 }
 148
 149 static void omap_disconnect_dssdevs(void)
 150 {
 151         struct omap_dss_device *dssdev = NULL;
 152
 153         for_each_dss_dev(dssdev)
 154                 dssdev->driver->disconnect(dssdev);
 155 }
 156
 157 static int omap_connect_dssdevs(void)
 158 {
 159         int r;
 160         struct omap_dss_device *dssdev = NULL;
 161
 162         if (!omapdss_stack_is_ready())
 163                 return -EPROBE_DEFER;
 164
 165         for_each_dss_dev(dssdev) {
 166                 r = dssdev->driver->connect(dssdev);
 167                 if (r == -EPROBE_DEFER) {
 168                         omap_dss_put_device(dssdev);
 169                         goto cleanup;
 170                 } else if (r) {
 171                         dev_warn(dssdev->dev, "could not connect display: %s\n",
 172                                 dssdev->name);
 173                 }
 174         }
 175
 176         return 0;
 177
 178 cleanup:
 179         /*
 180          * if we are deferring probe, we disconnect the devices we previously
 181          * connected
 182          */
 183         omap_disconnect_dssdevs();
 184
 185         return r;
 186 }
 187
 188 static int omap_modeset_init_properties(struct drm_device *dev)
 189 {
 190         struct omap_drm_private *priv = dev->dev_private;
 191         unsigned int num_planes = priv->dispc_ops->get_num_ovls();
 192
 193         priv->zorder_prop = drm_property_create_range(dev, 0, "zorder", 0,
 194                                                       num_planes - 1);
 195         if (!priv->zorder_prop)
 196                 return -ENOMEM;
 197
 198         return 0;
 199 }
 200
 201 static int omap_modeset_init(struct drm_device *dev)
 202 {
 203         struct omap_drm_private *priv = dev->dev_private;
 204         struct omap_dss_device *dssdev = NULL;
 205         int num_ovls = priv->dispc_ops->get_num_ovls();
 206         int num_mgrs = priv->dispc_ops->get_num_mgrs();
 207         int num_crtcs, crtc_idx, plane_idx;
 208         int ret;
 209         u32 plane_crtc_mask;
 210
 211         drm_mode_config_init(dev);
 212
 213         ret = omap_modeset_init_properties(dev);
 214         if (ret < 0)
 215                 return ret;
 216
 217         /*
 218          * This function creates exactly one connector, encoder, crtc,
 219          * and primary plane per each connected dss-device. Each
 220          * connector->encoder->crtc chain is expected to be separate
 221          * and each crtc is connect to a single dss-channel. If the
 222          * configuration does not match the expectations or exceeds
 223          * the available resources, the configuration is rejected.
 224          */
 225         num_crtcs = 0;
 226         for_each_dss_dev(dssdev)
 227                 if (omapdss_device_is_connected(dssdev))
 228                         num_crtcs++;
 229
 230         if (num_crtcs > num_mgrs || num_crtcs > num_ovls ||
 231             num_crtcs > ARRAY_SIZE(priv->crtcs) ||
 232             num_crtcs > ARRAY_SIZE(priv->planes) ||
 233             num_crtcs > ARRAY_SIZE(priv->encoders) ||
 234             num_crtcs > ARRAY_SIZE(priv->connectors)) {
 235                 dev_err(dev->dev, "%s(): Too many connected displays\n",
 236                         __func__);
 237                 return -EINVAL;
 238         }
 239
 240         /* All planes can be put to any CRTC */
 241         plane_crtc_mask = (1 << num_crtcs) - 1;
 242
 243         dssdev = NULL;
 244
 245         crtc_idx = 0;
 246         plane_idx = 0;
 247         for_each_dss_dev(dssdev) {
 248                 struct drm_connector *connector;
 249                 struct drm_encoder *encoder;
 250                 struct drm_plane *plane;
 251                 struct drm_crtc *crtc;
 252
 253                 if (!omapdss_device_is_connected(dssdev))
 254                         continue;
 255
 256                 encoder = omap_encoder_init(dev, dssdev);
 257                 if (!encoder)
 258                         return -ENOMEM;
 259
 260                 connector = omap_connector_init(dev,
 261                                 get_connector_type(dssdev), dssdev, encoder);
 262                 if (!connector)
 263                         return -ENOMEM;
 264
 265                 plane = omap_plane_init(dev, plane_idx, DRM_PLANE_TYPE_PRIMARY,
 266                                         plane_crtc_mask);
 267                 if (IS_ERR(plane))
 268                         return PTR_ERR(plane);
 269
 270                 crtc = omap_crtc_init(dev, plane, dssdev);
 271                 if (IS_ERR(crtc))
 272                         return PTR_ERR(crtc);
 273
 274                 drm_mode_connector_attach_encoder(connector, encoder);
 275                 encoder->possible_crtcs = (1 << crtc_idx);
 276
 277                 priv->crtcs[priv->num_crtcs++] = crtc;
 278                 priv->planes[priv->num_planes++] = plane;
 279                 priv->encoders[priv->num_encoders++] = encoder;
 280                 priv->connectors[priv->num_connectors++] = connector;
 281
 282                 plane_idx++;
 283                 crtc_idx++;
 284         }
 285
 286         /*
 287          * Create normal planes for the remaining overlays:
 288          */
 289         for (; plane_idx < num_ovls; plane_idx++) {
 290                 struct drm_plane *plane;
 291
 292                 if (WARN_ON(priv->num_planes >= ARRAY_SIZE(priv->planes)))
 293                         return -EINVAL;
 294
 295                 plane = omap_plane_init(dev, plane_idx, DRM_PLANE_TYPE_OVERLAY,
 296                         plane_crtc_mask);
 297                 if (IS_ERR(plane))
 298                         return PTR_ERR(plane);
 299
 300                 priv->planes[priv->num_planes++] = plane;
 301         }
 302
 303         DBG("registered %d planes, %d crtcs, %d encoders and %d connectors\n",
 304                 priv->num_planes, priv->num_crtcs, priv->num_encoders,
 305                 priv->num_connectors);
 306
 307         dev->mode_config.min_width = 8;
 308         dev->mode_config.min_height = 2;
 309
 310         /* note: eventually will need some cpu_is_omapXYZ() type stuff here
 311          * to fill in these limits properly on different OMAP generations..
 312          */
 313         dev->mode_config.max_width = 2048;
 314         dev->mode_config.max_height = 2048;
 315
 316         dev->mode_config.funcs = &omap_mode_config_funcs;
 317         dev->mode_config.helper_private = &omap_mode_config_helper_funcs;
 318
 319         drm_mode_config_reset(dev);
 320
 321         omap_drm_irq_install(dev);
 322
 323         return 0;
 324 }
 325
 326 /*
 327  * drm ioctl funcs
 328  */
 329
 330
 331 static int ioctl_get_param(struct drm_device *dev, void *data,
 332                 struct drm_file *file_priv)
 333 {
 334         struct omap_drm_private *priv = dev->dev_private;
 335         struct drm_omap_param *args = data;
 336
 337         DBG("%p: param=%llu", dev, args->param);
 338
 339         switch (args->param) {
 340         case OMAP_PARAM_CHIPSET_ID:
 341                 args->value = priv->omaprev;
 342                 break;
 343         default:
 344                 DBG("unknown parameter %lld", args->param);
 345                 return -EINVAL;
 346         }
 347
 348         return 0;
 349 }
 350
 351 static int ioctl_set_param(struct drm_device *dev, void *data,
 352                 struct drm_file *file_priv)
 353 {
 354         struct drm_omap_param *args = data;
 355
 356         switch (args->param) {
 357         default:
 358                 DBG("unknown parameter %lld", args->param);
 359                 return -EINVAL;
 360         }
 361
 362         return 0;
 363 }
 364
 365 #define OMAP_BO_USER_MASK       0x00ffffff      /* flags settable by userspace */
 366
 367 static int ioctl_gem_new(struct drm_device *dev, void *data,
 368                 struct drm_file *file_priv)
 369 {
 370         struct drm_omap_gem_new *args = data;
 371         u32 flags = args->flags & OMAP_BO_USER_MASK;
 372
 373         VERB("%p:%p: size=0x%08x, flags=%08x", dev, file_priv,
 374              args->size.bytes, flags);
 375
 376         return omap_gem_new_handle(dev, file_priv, args->size, flags,
 377                                    &args->handle);
 378 }
 379
 380 static int ioctl_gem_info(struct drm_device *dev, void *data,
 381                 struct drm_file *file_priv)
 382 {
 383         struct drm_omap_gem_info *args = data;
 384         struct drm_gem_object *obj;
 385         int ret = 0;
 386
 387         VERB("%p:%p: handle=%d", dev, file_priv, args->handle);
 388
 389         obj = drm_gem_object_lookup(file_priv, args->handle);
 390         if (!obj)
 391                 return -ENOENT;
 392
 393         args->size = omap_gem_mmap_size(obj);
 394         args->offset = omap_gem_mmap_offset(obj);
 395
 396         drm_gem_object_unreference_unlocked(obj);
 397
 398         return ret;
 399 }
 400
 401 static const struct drm_ioctl_desc ioctls[DRM_COMMAND_END - DRM_COMMAND_BASE] = {
 402         DRM_IOCTL_DEF_DRV(OMAP_GET_PARAM, ioctl_get_param,
 403                           DRM_AUTH | DRM_RENDER_ALLOW),
 404         DRM_IOCTL_DEF_DRV(OMAP_SET_PARAM, ioctl_set_param,
 405                           DRM_AUTH | DRM_MASTER | DRM_ROOT_ONLY),
 406         DRM_IOCTL_DEF_DRV(OMAP_GEM_NEW, ioctl_gem_new,
 407                           DRM_AUTH | DRM_RENDER_ALLOW),
 408         /* Deprecated, to be removed. */
 409         DRM_IOCTL_DEF_DRV(OMAP_GEM_CPU_PREP, drm_noop,
 410                           DRM_AUTH | DRM_RENDER_ALLOW),
 411         /* Deprecated, to be removed. */
 412         DRM_IOCTL_DEF_DRV(OMAP_GEM_CPU_FINI, drm_noop,
 413                           DRM_AUTH | DRM_RENDER_ALLOW),
 414         DRM_IOCTL_DEF_DRV(OMAP_GEM_INFO, ioctl_gem_info,
 415                           DRM_AUTH | DRM_RENDER_ALLOW),
 416 };
 417
 418 /*
 419  * drm driver funcs
 420  */
 421
 422 static int dev_open(struct drm_device *dev, struct drm_file *file)
 423 {
 424         file->driver_priv = NULL;
 425
 426         DBG("open: dev=%p, file=%p", dev, file);
 427
 428         return 0;
 429 }
 430
 431 /**
 432  * lastclose - clean up after all DRM clients have exited
 433  * @dev: DRM device
 434  *
 435  * Take care of cleaning up after all DRM clients have exited.  In the
 436  * mode setting case, we want to restore the kernel's initial mode (just
 437  * in case the last client left us in a bad state).
 438  */
 439 static void dev_lastclose(struct drm_device *dev)
 440 {
 441         int i;
 442
 443         /* we don't support vga_switcheroo.. so just make sure the fbdev
 444          * mode is active
 445          */
 446         struct omap_drm_private *priv = dev->dev_private;
 447         int ret;
 448
 449         DBG("lastclose: dev=%p", dev);
 450
 451         /* need to restore default rotation state.. not sure
 452          * if there is a cleaner way to restore properties to
 453          * default state?  Maybe a flag that properties should
 454          * automatically be restored to default state on
 455          * lastclose?
 456          */
 457         for (i = 0; i < priv->num_crtcs; i++) {
 458                 struct drm_crtc *crtc = priv->crtcs[i];
 459
 460                 if (!crtc->primary->rotation_property)
 461                         continue;
 462
 463                 drm_object_property_set_value(&crtc->base,
 464                                               crtc->primary->rotation_property,
 465                                               DRM_MODE_ROTATE_0);
 466         }
 467
 468         for (i = 0; i < priv->num_planes; i++) {
 469                 struct drm_plane *plane = priv->planes[i];
 470
 471                 if (!plane->rotation_property)
 472                         continue;
 473
 474                 drm_object_property_set_value(&plane->base,
 475                                               plane->rotation_property,
 476                                               DRM_MODE_ROTATE_0);
 477         }
 478
 479         if (priv->fbdev) {
 480                 ret = drm_fb_helper_restore_fbdev_mode_unlocked(priv->fbdev);
 481                 if (ret)
 482                         DBG("failed to restore crtc mode");
 483         }
 484 }
 485
 486 static const struct vm_operations_struct omap_gem_vm_ops = {
 487         .fault = omap_gem_fault,
 488         .open = drm_gem_vm_open,
 489         .close = drm_gem_vm_close,
 490 };
 491
 492 static const struct file_operations omapdriver_fops = {
 493         .owner = THIS_MODULE,
 494         .open = drm_open,
 495         .unlocked_ioctl = drm_ioctl,
 496         .compat_ioctl = drm_compat_ioctl,
 497         .release = drm_release,
 498         .mmap = omap_gem_mmap,
 499         .poll = drm_poll,
 500         .read = drm_read,
 501         .llseek = noop_llseek,
 502 };
 503
 504 static struct drm_driver omap_drm_driver = {
 505         .driver_features = DRIVER_MODESET | DRIVER_GEM  | DRIVER_PRIME |
 506                 DRIVER_ATOMIC | DRIVER_RENDER,
 507         .open = dev_open,
 508         .lastclose = dev_lastclose,
 509 #ifdef CONFIG_DEBUG_FS
 510         .debugfs_init = omap_debugfs_init,
 511 #endif
 512         .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
 513         .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
 514         .gem_prime_export = omap_gem_prime_export,
 515         .gem_prime_import = omap_gem_prime_import,
 516         .gem_free_object = omap_gem_free_object,
 517         .gem_vm_ops = &omap_gem_vm_ops,
 518         .dumb_create = omap_gem_dumb_create,
 519         .dumb_map_offset = omap_gem_dumb_map_offset,
 520         .dumb_destroy = drm_gem_dumb_destroy,
 521         .ioctls = ioctls,
 522         .num_ioctls = DRM_OMAP_NUM_IOCTLS,
 523         .fops = &omapdriver_fops,
 524         .name = DRIVER_NAME,
 525         .desc = DRIVER_DESC,
 526         .date = DRIVER_DATE,
 527         .major = DRIVER_MAJOR,
 528         .minor = DRIVER_MINOR,
 529         .patchlevel = DRIVER_PATCHLEVEL,
 530 };
 531
 532 static const struct soc_device_attribute omapdrm_soc_devices[] = {
 533         { .family = "OMAP3", .data = (void *)0x3430 },
 534         { .family = "OMAP4", .data = (void *)0x4430 },
 535         { .family = "OMAP5", .data = (void *)0x5430 },
 536         { .family = "DRA7",  .data = (void *)0x0752 },
 537         { /* sentinel */ }
 538 };
 539
 540 static int pdev_probe(struct platform_device *pdev)
 541 {
 542         const struct soc_device_attribute *soc;
 543         struct omap_drm_private *priv;
 544         struct drm_device *ddev;
 545         unsigned int i;
 546         int ret;
 547
 548         DBG("%s", pdev->name);
 549
 550         if (omapdss_is_initialized() == false)
 551                 return -EPROBE_DEFER;
 552
 553         omap_crtc_pre_init();
 554
 555         ret = omap_connect_dssdevs();
 556         if (ret)
 557                 goto err_crtc_uninit;
 558
 559         /* Allocate and initialize the driver private structure. */
 560         priv = kzalloc(sizeof(*priv), GFP_KERNEL);
 561         if (!priv) {
 562                 ret = -ENOMEM;
 563                 goto err_disconnect_dssdevs;
 564         }
 565
 566         priv->dispc_ops = dispc_get_ops();
 567
 568         soc = soc_device_match(omapdrm_soc_devices);
 569         priv->omaprev = soc ? (unsigned int)soc->data : 0;
 570         priv->wq = alloc_ordered_workqueue("omapdrm", 0);
 571
 572         spin_lock_init(&priv->list_lock);
 573         INIT_LIST_HEAD(&priv->obj_list);
 574
 575         /* Allocate and initialize the DRM device. */
 576         ddev = drm_dev_alloc(&omap_drm_driver, &pdev->dev);
 577         if (IS_ERR(ddev)) {
 578                 ret = PTR_ERR(ddev);
 579                 goto err_free_priv;
 580         }
 581
 582         ddev->dev_private = priv;
 583         platform_set_drvdata(pdev, ddev);
 584
 585         omap_gem_init(ddev);
 586
 587         ret = omap_modeset_init(ddev);
 588         if (ret) {
 589                 dev_err(&pdev->dev, "omap_modeset_init failed: ret=%d\n", ret);
 590                 goto err_free_drm_dev;
 591         }
 592
 593         /* Initialize vblank handling, start with all CRTCs disabled. */
 594         ret = drm_vblank_init(ddev, priv->num_crtcs);
 595         if (ret) {
 596                 dev_err(&pdev->dev, "could not init vblank\n");
 597                 goto err_cleanup_modeset;
 598         }
 599
 600         for (i = 0; i < priv->num_crtcs; i++)
 601                 drm_crtc_vblank_off(priv->crtcs[i]);
 602
 603         priv->fbdev = omap_fbdev_init(ddev);
 604
 605         drm_kms_helper_poll_init(ddev);
 606
 607         /*
 608          * Register the DRM device with the core and the connectors with
 609          * sysfs.
 610          */
 611         ret = drm_dev_register(ddev, 0);
 612         if (ret)
 613                 goto err_cleanup_helpers;
 614
 615         return 0;
 616
 617 err_cleanup_helpers:
 618         drm_kms_helper_poll_fini(ddev);
 619         if (priv->fbdev)
 620                 omap_fbdev_free(ddev);
 621 err_cleanup_modeset:
 622         drm_mode_config_cleanup(ddev);
 623         omap_drm_irq_uninstall(ddev);
 624 err_free_drm_dev:
 625         omap_gem_deinit(ddev);
 626         drm_dev_unref(ddev);
 627 err_free_priv:
 628         destroy_workqueue(priv->wq);
 629         kfree(priv);
 630 err_disconnect_dssdevs:
 631         omap_disconnect_dssdevs();
 632 err_crtc_uninit:
 633         omap_crtc_pre_uninit();
 634         return ret;
 635 }
 636
 637 static int pdev_remove(struct platform_device *pdev)
 638 {
 639         struct drm_device *ddev = platform_get_drvdata(pdev);
 640         struct omap_drm_private *priv = ddev->dev_private;
 641
 642         DBG("");
 643
 644         drm_dev_unregister(ddev);
 645
 646         drm_kms_helper_poll_fini(ddev);
 647
 648         if (priv->fbdev)
 649                 omap_fbdev_free(ddev);
 650
 651         drm_atomic_helper_shutdown(ddev);
 652
 653         drm_mode_config_cleanup(ddev);
 654
 655         omap_drm_irq_uninstall(ddev);
 656         omap_gem_deinit(ddev);
 657
 658         drm_dev_unref(ddev);
 659
 660         destroy_workqueue(priv->wq);
 661         kfree(priv);
 662
 663         omap_disconnect_dssdevs();
 664         omap_crtc_pre_uninit();
 665
 666         return 0;
 667 }
 668
 669 #ifdef CONFIG_PM_SLEEP
 670 static int omap_drm_suspend_all_displays(void)
 671 {
 672         struct omap_dss_device *dssdev = NULL;
 673
 674         for_each_dss_dev(dssdev) {
 675                 if (!dssdev->driver)
 676                         continue;
 677
 678                 if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE) {
 679                         dssdev->driver->disable(dssdev);
 680                         dssdev->activate_after_resume = true;
 681                 } else {
 682                         dssdev->activate_after_resume = false;
 683                 }
 684         }
 685
 686         return 0;
 687 }
 688
 689 static int omap_drm_resume_all_displays(void)
 690 {
 691         struct omap_dss_device *dssdev = NULL;
 692
 693         for_each_dss_dev(dssdev) {
 694                 if (!dssdev->driver)
 695                         continue;
 696
 697                 if (dssdev->activate_after_resume) {
 698                         dssdev->driver->enable(dssdev);
 699                         dssdev->activate_after_resume = false;
 700                 }
 701         }
 702
 703         return 0;
 704 }
 705
 706 static int omap_drm_suspend(struct device *dev)
 707 {
 708         struct drm_device *drm_dev = dev_get_drvdata(dev);
 709
 710         drm_kms_helper_poll_disable(drm_dev);
 711
 712         drm_modeset_lock_all(drm_dev);
 713         omap_drm_suspend_all_displays();
 714         drm_modeset_unlock_all(drm_dev);
 715
 716         return 0;
 717 }
 718
 719 static int omap_drm_resume(struct device *dev)
 720 {
 721         struct drm_device *drm_dev = dev_get_drvdata(dev);
 722
 723         drm_modeset_lock_all(drm_dev);
 724         omap_drm_resume_all_displays();
 725         drm_modeset_unlock_all(drm_dev);
 726
 727         drm_kms_helper_poll_enable(drm_dev);
 728
 729         return omap_gem_resume(dev);
 730 }
 731 #endif
 732
 733 static SIMPLE_DEV_PM_OPS(omapdrm_pm_ops, omap_drm_suspend, omap_drm_resume);
 734
 735 static struct platform_driver pdev = {
 736         .driver = {
 737                 .name = DRIVER_NAME,
 738                 .pm = &omapdrm_pm_ops,
 739         },
 740         .probe = pdev_probe,
 741         .remove = pdev_remove,
 742 };
 743
 744 static struct platform_driver * const drivers[] = {
 745         &omap_dmm_driver,
 746         &pdev,
 747 };
 748
 749 static int __init omap_drm_init(void)
 750 {
 751         DBG("init");
 752
 753         return platform_register_drivers(drivers, ARRAY_SIZE(drivers));
 754 }
 755
 756 static void __exit omap_drm_fini(void)
 757 {
 758         DBG("fini");
 759
 760         platform_unregister_drivers(drivers, ARRAY_SIZE(drivers));
 761 }
 762
 763 /* need late_initcall() so we load after dss_driver's are loaded */
 764 late_initcall(omap_drm_init);
 765 module_exit(omap_drm_fini);
 766
 767 MODULE_AUTHOR("Rob Clark <rob@ti.com>");
 768 MODULE_DESCRIPTION("OMAP DRM Display Driver");
 769 MODULE_ALIAS("platform:" DRIVER_NAME);
 770 MODULE_LICENSE("GPL v2");