drivers/gpu/drm/exynos/exynos_drm_drv.c

   1 /*
   2  * Copyright (c) 2011 Samsung Electronics Co., Ltd.
   3  * Authors:
   4  *      Inki Dae <inki.dae@samsung.com>
   5  *      Joonyoung Shim <jy0922.shim@samsung.com>
   6  *      Seung-Woo Kim <sw0312.kim@samsung.com>
   7  *
   8  * Permission is hereby granted, free of charge, to any person obtaining a
   9  * copy of this software and associated documentation files (the "Software"),
  10  * to deal in the Software without restriction, including without limitation
  11  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  12  * and/or sell copies of the Software, and to permit persons to whom the
  13  * Software is furnished to do so, subject to the following conditions:
  14  *
  15  * The above copyright notice and this permission notice (including the next
  16  * paragraph) shall be included in all copies or substantial portions of the
  17  * Software.
  18  *
  19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  20  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  21  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  22  * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  23  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  24  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  25  * OTHER DEALINGS IN THE SOFTWARE.
  26  */
  27
  28 #include "drmP.h"
  29 #include "drm.h"
  30 #include "drm_crtc_helper.h"
  31
  32 #include <drm/exynos_drm.h>
  33
  34 #include "exynos_drm_drv.h"
  35 #include "exynos_drm_crtc.h"
  36 #include "exynos_drm_encoder.h"
  37 #include "exynos_drm_fbdev.h"
  38 #include "exynos_drm_fb.h"
  39 #include "exynos_drm_gem.h"
  40 #include "exynos_drm_plane.h"
  41 #include "exynos_drm_vidi.h"
  42 #include "exynos_drm_dmabuf.h"
  43 #include "exynos_drm_display.h"
  44
  45 #include <linux/i2c.h>
  46 #include <linux/of_i2c.h>
  47
  48 #include <drm/bridge/ptn3460.h>
  49 #include <drm/bridge/ps8622.h>
  50
  51 #define DRIVER_NAME     "exynos"
  52 #define DRIVER_DESC     "Samsung SoC DRM"
  53 #define DRIVER_DATE     "20110530"
  54 #define DRIVER_MAJOR    1
  55 #define DRIVER_MINOR    0
  56
  57 #define VBLANK_OFF_DELAY        50000
  58
  59 /* TODO (seanpaul): Once we remove platform drivers, we'll be calling the
  60  * various panel/controller init functions directly. These init functions will
  61  * return to us the ops and context, so we can get rid of these attach
  62  * functions. Once the attach functions are gone, we can move this array of
  63  * display pointers into the drm device's platform data.
  64  *
  65  * For now, we'll use a global to keep track of things.
  66  */
  67 static struct exynos_drm_display *displays[EXYNOS_DRM_DISPLAY_NUM_DISPLAYS];
  68
  69 struct bridge_init {
  70         struct i2c_client *client;
  71         struct device_node *node;
  72         bool valid;
  73 };
  74
  75 static int find_bridge(const char *name, struct bridge_init *bridge)
  76 {
  77         bridge->valid = false;
  78         bridge->client = NULL;
  79         bridge->node = of_find_node_by_name(NULL, name);
  80         if (!bridge->node)
  81                 return 0;
  82
  83         bridge->client = of_find_i2c_device_by_node(bridge->node);
  84         if (!bridge->client)
  85                 return -ENODEV;
  86
  87         bridge->valid = true;
  88         return 0;
  89 }
  90
  91 static int exynos_drm_load(struct drm_device *dev, unsigned long flags)
  92 {
  93         struct exynos_drm_private *private;
  94         int ret;
  95         int nr;
  96         struct bridge_init bridge;
  97
  98         DRM_DEBUG("[DEV:%s] flags: 0x%lx\n", dev->devname, flags);
  99
 100         private = kzalloc(sizeof(struct exynos_drm_private), GFP_KERNEL);
 101         if (!private) {
 102                 DRM_ERROR("failed to allocate private\n");
 103                 return -ENOMEM;
 104         }
 105
 106 #ifdef CONFIG_DMA_SHARED_BUFFER_USES_KDS
 107         if (kds_callback_init(&private->kds_cb, 1,
 108                               exynos_drm_kds_callback) < 0) {
 109                 DRM_ERROR("kds alloc queue failed.\n");
 110                 ret = -ENOMEM;
 111                 goto err_kds;
 112         }
 113 #endif
 114
 115         DRM_INIT_WAITQUEUE(&private->wait_vsync_queue);
 116
 117         dev->dev_private = (void *)private;
 118
 119         drm_mode_config_init(dev);
 120
 121         /* init kms poll for handling hpd */
 122         drm_kms_helper_poll_init(dev);
 123
 124         exynos_drm_mode_config_init(dev);
 125
 126         /*
 127          * EXYNOS4 is enough to have two CRTCs and each crtc would be used
 128          * without dependency of hardware.
 129          */
 130         for (nr = 0; nr < EXYNOS_DRM_DISPLAY_NUM_DISPLAYS; nr++) {
 131                 ret = exynos_drm_crtc_create(dev, nr, displays[nr]);
 132                 if (ret)
 133                         goto err_crtc;
 134         }
 135
 136         for (nr = 0; nr < MAX_PLANE; nr++) {
 137                 ret = exynos_plane_init(dev, nr);
 138                 if (ret)
 139                         goto err_crtc;
 140         }
 141
 142         ret = drm_vblank_init(dev, EXYNOS_DRM_DISPLAY_NUM_DISPLAYS);
 143         if (ret)
 144                 goto err_crtc;
 145
 146         ret = find_bridge("ptn3460-bridge", &bridge);
 147         if (ret) {
 148                 DRM_ERROR("Could not get PTN3460 bridge %d\n", ret);
 149                 goto err_kds;
 150         }
 151         if (bridge.valid) {
 152                 ret = ptn3460_init(dev, bridge.client, bridge.node);
 153                 if (ret) {
 154                         DRM_ERROR("Failed to initialize the ptn bridge\n");
 155                         goto err_kds;
 156                 }
 157         } else {
 158                 ret = find_bridge("ps8622-bridge", &bridge);
 159                 if (ret) {
 160                         DRM_ERROR("Could not get PS8622 bridge %d\n", ret);
 161                         goto err_kds;
 162                 }
 163
 164                 if (bridge.valid) {
 165                         ret = ps8622_init(dev, bridge.client, bridge.node);
 166                         if (ret) {
 167                                 DRM_ERROR("Failed to initialize the Parade "
 168                                           "bridge\n");
 169                                 goto err_kds;
 170                         }
 171                 }
 172         }
 173
 174         /*
 175          * probe sub drivers such as display controller and hdmi driver,
 176          * that were registered at probe() of platform driver
 177          * to the sub driver and create encoder and connector for them.
 178          */
 179         ret = exynos_drm_device_register(dev);
 180         if (ret)
 181                 goto err_vblank;
 182
 183         /* setup possible_clones. */
 184         exynos_drm_encoder_setup(dev);
 185
 186         /*
 187          * create and configure fb helper and also exynos specific
 188          * fbdev object.
 189          */
 190         ret = exynos_drm_fbdev_init(dev);
 191         if (ret) {
 192                 DRM_ERROR("failed to initialize drm fbdev\n");
 193                 goto err_drm_device;
 194         }
 195
 196         drm_vblank_offdelay = VBLANK_OFF_DELAY;
 197
 198         return 0;
 199
 200 err_drm_device:
 201         exynos_drm_device_unregister(dev);
 202 err_vblank:
 203         drm_vblank_cleanup(dev);
 204 err_crtc:
 205         drm_mode_config_cleanup(dev);
 206 #ifdef CONFIG_DMA_SHARED_BUFFER_USES_KDS
 207         kds_callback_term(&private->kds_cb);
 208 err_kds:
 209 #endif
 210         kfree(private);
 211
 212         return ret;
 213 }
 214
 215 static int exynos_drm_unload(struct drm_device *dev)
 216 {
 217         struct exynos_drm_private *private = dev->dev_private;
 218
 219         DRM_DEBUG("[DEV:%s]\n", dev->devname);
 220
 221         exynos_drm_fbdev_fini(dev);
 222         exynos_drm_device_unregister(dev);
 223         drm_vblank_cleanup(dev);
 224         drm_kms_helper_poll_fini(dev);
 225         drm_mode_config_cleanup(dev);
 226 #ifdef CONFIG_DMA_SHARED_BUFFER_USES_KDS
 227         kds_callback_term(&private->kds_cb);
 228 #endif
 229         kfree(private);
 230
 231         dev->dev_private = NULL;
 232
 233         return 0;
 234 }
 235
 236 static int exynos_drm_open(struct drm_device *dev, struct drm_file *file)
 237 {
 238         struct exynos_drm_file_private *file_private;
 239
 240         DRM_DEBUG("[DEV:%s]\n", dev->devname);
 241
 242         file_private = kzalloc(sizeof(*file_private), GFP_KERNEL);
 243         if (!file_private) {
 244                 DRM_ERROR("failed to allocate exynos_drm_file_private\n");
 245                 return -ENOMEM;
 246         }
 247         INIT_LIST_HEAD(&file_private->gem_cpu_acquire_list);
 248
 249         file->driver_priv = file_private;
 250
 251         return exynos_drm_subdrv_open(dev, file);
 252 }
 253
 254 static void exynos_drm_preclose(struct drm_device *dev,
 255                                         struct drm_file *file)
 256 {
 257         struct exynos_drm_file_private *file_private = file->driver_priv;
 258         struct exynos_drm_gem_obj_node *cur, *d;
 259
 260         DRM_DEBUG("[DEV:%s]\n", dev->devname);
 261
 262         mutex_lock(&dev->struct_mutex);
 263         /* release kds resource sets for outstanding GEM object acquires */
 264         list_for_each_entry_safe(cur, d,
 265                         &file_private->gem_cpu_acquire_list, list) {
 266 #ifdef CONFIG_DMA_SHARED_BUFFER_USES_KDS
 267                 BUG_ON(cur->exynos_gem_obj->resource_set == NULL);
 268                 kds_resource_set_release(&cur->exynos_gem_obj->resource_set);
 269 #endif
 270                 drm_gem_object_unreference(&cur->exynos_gem_obj->base);
 271                 kfree(cur);
 272         }
 273         mutex_unlock(&dev->struct_mutex);
 274         INIT_LIST_HEAD(&file_private->gem_cpu_acquire_list);
 275
 276         exynos_drm_subdrv_close(dev, file);
 277 }
 278
 279 static void exynos_drm_postclose(struct drm_device *dev, struct drm_file *file)
 280 {
 281         DRM_DEBUG("[DEV:%s]\n", dev->devname);
 282
 283         if (!file->driver_priv)
 284                 return;
 285
 286         kfree(file->driver_priv);
 287         file->driver_priv = NULL;
 288 }
 289
 290 static void exynos_drm_lastclose(struct drm_device *dev)
 291 {
 292         DRM_DEBUG("[DEV:%s]\n", dev->devname);
 293
 294         exynos_drm_fbdev_restore_mode(dev);
 295 }
 296
 297 static struct vm_operations_struct exynos_drm_gem_vm_ops = {
 298         .fault = exynos_drm_gem_fault,
 299         .open = drm_gem_vm_open,
 300         .close = drm_gem_vm_close,
 301 };
 302
 303 static struct drm_ioctl_desc exynos_ioctls[] = {
 304         DRM_IOCTL_DEF_DRV(EXYNOS_GEM_CREATE, exynos_drm_gem_create_ioctl,
 305                         DRM_UNLOCKED | DRM_AUTH),
 306         DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MAP_OFFSET,
 307                         exynos_drm_gem_map_offset_ioctl, DRM_UNLOCKED |
 308                         DRM_AUTH),
 309         DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MMAP,
 310                         exynos_drm_gem_mmap_ioctl, DRM_UNLOCKED | DRM_AUTH),
 311         DRM_IOCTL_DEF_DRV(EXYNOS_PLANE_SET_ZPOS, exynos_plane_set_zpos_ioctl,
 312                         DRM_UNLOCKED | DRM_AUTH),
 313         DRM_IOCTL_DEF_DRV(EXYNOS_VIDI_CONNECTION,
 314                         vidi_connection_ioctl, DRM_UNLOCKED | DRM_AUTH),
 315         DRM_IOCTL_DEF_DRV(EXYNOS_GEM_CPU_ACQUIRE,
 316                         exynos_drm_gem_cpu_acquire_ioctl,
 317                         DRM_UNLOCKED | DRM_AUTH),
 318         DRM_IOCTL_DEF_DRV(EXYNOS_GEM_CPU_RELEASE,
 319                         exynos_drm_gem_cpu_release_ioctl,
 320                         DRM_UNLOCKED | DRM_AUTH),
 321 };
 322
 323 static const struct file_operations exynos_drm_driver_fops = {
 324         .owner          = THIS_MODULE,
 325         .open           = drm_open,
 326         .mmap           = exynos_drm_gem_mmap,
 327         .poll           = drm_poll,
 328         .read           = drm_read,
 329         .unlocked_ioctl = drm_ioctl,
 330         .release        = drm_release,
 331 };
 332
 333 static struct drm_driver exynos_drm_driver = {
 334         .driver_features        = DRIVER_HAVE_IRQ | DRIVER_BUS_PLATFORM |
 335                                   DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME,
 336         .load                   = exynos_drm_load,
 337         .unload                 = exynos_drm_unload,
 338         .open                   = exynos_drm_open,
 339         .preclose               = exynos_drm_preclose,
 340         .lastclose              = exynos_drm_lastclose,
 341         .postclose              = exynos_drm_postclose,
 342         .get_vblank_counter     = drm_vblank_count,
 343         .enable_vblank          = exynos_drm_crtc_enable_vblank,
 344         .disable_vblank         = exynos_drm_crtc_disable_vblank,
 345 #if defined(CONFIG_DEBUG_FS)
 346         .debugfs_init           = exynos_drm_debugfs_init,
 347         .debugfs_cleanup        = exynos_drm_debugfs_cleanup,
 348 #endif
 349         .gem_free_object        = exynos_drm_gem_free_object,
 350         .gem_vm_ops             = &exynos_drm_gem_vm_ops,
 351         .dumb_create            = exynos_drm_gem_dumb_create,
 352         .dumb_map_offset        = exynos_drm_gem_dumb_map_offset,
 353         .dumb_destroy           = exynos_drm_gem_dumb_destroy,
 354         .prime_handle_to_fd     = drm_gem_prime_handle_to_fd,
 355         .prime_fd_to_handle     = drm_gem_prime_fd_to_handle,
 356         .gem_prime_export       = exynos_dmabuf_prime_export,
 357         .gem_prime_import       = exynos_dmabuf_prime_import,
 358         .ioctls                 = exynos_ioctls,
 359         .fops                   = &exynos_drm_driver_fops,
 360         .name   = DRIVER_NAME,
 361         .desc   = DRIVER_DESC,
 362         .date   = DRIVER_DATE,
 363         .major  = DRIVER_MAJOR,
 364         .minor  = DRIVER_MINOR,
 365 };
 366
 367 #ifdef CONFIG_EXYNOS_IOMMU
 368 static int iommu_init(struct platform_device *pdev)
 369 {
 370         /* DRM device expects a IOMMU mapping to be already
 371          * created in FIMD. Else this function should
 372          * throw an error.
 373          */
 374         if (exynos_drm_common_mapping==NULL) {
 375                 printk(KERN_ERR "exynos drm common mapping is invalid\n");
 376                 return -1;
 377         }
 378
 379         /*
 380          * The ordering in Makefile warrants that this is initialized after
 381          * FIMD, so only just ensure that it works as expected and we are
 382          * reusing the mapping originally created in exynos_drm_fimd.c.
 383          */
 384         WARN_ON(!exynos_drm_common_mapping);
 385         if (!s5p_create_iommu_mapping(&pdev->dev, 0,
 386                                 0, 0, exynos_drm_common_mapping)) {
 387                 printk(KERN_ERR "failed to create IOMMU mapping\n");
 388                 return -1;
 389         }
 390
 391         return 0;
 392 }
 393
 394 static void iommu_deinit(struct platform_device *pdev)
 395 {
 396         /* detach the device and mapping */
 397         s5p_destroy_iommu_mapping(&pdev->dev);
 398         DRM_DEBUG("released the IOMMU mapping\n");
 399
 400         return;
 401 }
 402 #endif
 403
 404 static int exynos_drm_platform_probe(struct platform_device *pdev)
 405 {
 406         struct device *dev = &pdev->dev;
 407         int ret;
 408
 409         DRM_DEBUG("[PDEV:%s]\n", pdev->name);
 410
 411 #ifdef CONFIG_EXYNOS_IOMMU
 412         if (iommu_init(pdev)) {
 413                 DRM_ERROR("failed to initialize IOMMU\n");
 414                 return -ENODEV;
 415         }
 416 #endif
 417
 418         exynos_drm_driver.num_ioctls = DRM_ARRAY_SIZE(exynos_ioctls);
 419
 420         pm_vt_switch_required(dev, false);
 421         pm_runtime_enable(dev);
 422         pm_runtime_get_sync(dev);
 423
 424         ret = drm_platform_init(&exynos_drm_driver, pdev);
 425 #ifdef CONFIG_EXYNOS_IOMMU
 426         if (ret)
 427                 iommu_deinit(pdev);
 428 #endif
 429
 430         return ret;
 431 }
 432
 433 static int __devexit exynos_drm_platform_remove(struct platform_device *pdev)
 434 {
 435         struct device *dev = &pdev->dev;
 436
 437         DRM_DEBUG("[PDEV:%s]\n", pdev->name);
 438
 439         pm_vt_switch_unregister(dev);
 440         pm_runtime_disable(dev);
 441
 442         drm_platform_exit(&exynos_drm_driver, pdev);
 443
 444 #ifdef CONFIG_EXYNOS_IOMMU
 445         iommu_deinit(pdev);
 446 #endif
 447         return 0;
 448 }
 449
 450 const char *exynos_display_type_name(const struct exynos_drm_display *display)
 451 {
 452         switch (display->display_type) {
 453         case EXYNOS_DRM_DISPLAY_TYPE_FIMD:
 454                 return "FIMD";
 455         case EXYNOS_DRM_DISPLAY_TYPE_MIXER:
 456                 return "MIXER";
 457         case EXYNOS_DRM_DISPLAY_TYPE_VIDI:
 458                 return "VIDI";
 459         default:
 460                 return "?";
 461         }
 462 }
 463
 464 void exynos_display_attach_panel(enum exynos_drm_display_type type,
 465                 struct exynos_panel_ops *ops, void *ctx)
 466 {
 467         int i;
 468         for (i = 0; i < EXYNOS_DRM_DISPLAY_NUM_DISPLAYS; i++) {
 469                 if (displays[i]->display_type == type) {
 470                         displays[i]->panel_ctx = ctx;
 471                         displays[i]->panel_ops = ops;
 472                         return;
 473                 }
 474         }
 475 }
 476
 477 void exynos_display_attach_controller(enum exynos_drm_display_type type,
 478                 struct exynos_controller_ops *ops, void *ctx)
 479 {
 480         int i;
 481         for (i = 0; i < EXYNOS_DRM_DISPLAY_NUM_DISPLAYS; i++) {
 482                 if (displays[i]->display_type == type) {
 483                         displays[i]->controller_ctx = ctx;
 484                         displays[i]->controller_ops = ops;
 485                         return;
 486                 }
 487         }
 488 }
 489
 490 static int display_subdrv_probe(struct drm_device *drm_dev,
 491                 struct exynos_drm_subdrv *subdrv)
 492 {
 493         struct exynos_drm_display *display = subdrv->display;
 494         int ret;
 495
 496         if (!display->controller_ops || !display->panel_ops)
 497                 return -EINVAL;
 498
 499         if (display->controller_ops->subdrv_probe) {
 500                 ret = display->controller_ops->subdrv_probe(
 501                                 display->controller_ctx, drm_dev);
 502                 if (ret)
 503                         return ret;
 504         }
 505
 506         if (display->panel_ops->subdrv_probe) {
 507                 ret = display->panel_ops->subdrv_probe(display->panel_ctx,
 508                                 drm_dev);
 509                 if (ret)
 510                         return ret;
 511         }
 512
 513         return 0;
 514 }
 515
 516 int exynos_display_init(struct exynos_drm_display *display,
 517                 enum exynos_drm_display_type type)
 518 {
 519         struct exynos_drm_subdrv *subdrv;
 520
 521         subdrv = kzalloc(sizeof(*subdrv), GFP_KERNEL);
 522         if (!subdrv) {
 523                 DRM_ERROR("Failed to allocate display subdrv\n");
 524                 return -ENOMEM;
 525         }
 526
 527         display->display_type = type;
 528         display->pipe = -1;
 529         display->subdrv = subdrv;
 530
 531         subdrv->probe = display_subdrv_probe;
 532         subdrv->display = display;
 533         exynos_drm_subdrv_register(subdrv);
 534
 535         return 0;
 536 }
 537
 538 void exynos_display_remove(struct exynos_drm_display *display)
 539 {
 540         if (display->subdrv) {
 541                 exynos_drm_subdrv_unregister(display->subdrv);
 542                 kfree(display->subdrv);
 543         }
 544 }
 545
 546 static int exynos_drm_resume_displays(struct drm_device *dev)
 547 {
 548         int i;
 549
 550         for (i = 0; i < EXYNOS_DRM_DISPLAY_NUM_DISPLAYS; i++) {
 551                 struct exynos_drm_display *display = displays[i];
 552                 struct drm_connector *connector = display->subdrv->connector;
 553
 554                 if (!connector || !connector->funcs->dpms)
 555                         continue;
 556
 557                 connector->funcs->dpms(connector, display->suspend_dpms);
 558         }
 559
 560         drm_helper_resume_force_mode(dev);
 561
 562         return 0;
 563 }
 564
 565 static int exynos_drm_suspend_displays(void)
 566 {
 567         int i;
 568
 569         for (i = 0; i < EXYNOS_DRM_DISPLAY_NUM_DISPLAYS; i++) {
 570                 struct exynos_drm_display *display = displays[i];
 571                 struct drm_connector *connector = display->subdrv->connector;
 572
 573                 if (!connector)
 574                         continue;
 575
 576                 display->suspend_dpms = connector->dpms;
 577                 if (connector->funcs->dpms)
 578                         connector->funcs->dpms(connector, DRM_MODE_DPMS_OFF);
 579         }
 580         return 0;
 581 }
 582
 583 #ifdef CONFIG_PM_SLEEP
 584 static int exynos_drm_suspend(struct device *dev)
 585 {
 586         if (pm_runtime_suspended(dev))
 587                 return 0;
 588
 589         return exynos_drm_suspend_displays();
 590 }
 591
 592 static int exynos_drm_resume(struct device *dev)
 593 {
 594         struct platform_device *pdev = to_platform_device(dev);
 595         struct drm_device *drm_dev = platform_get_drvdata(pdev);
 596
 597         if (pm_runtime_suspended(dev))
 598                 return 0;
 599
 600         return exynos_drm_resume_displays(drm_dev);
 601 }
 602 #endif
 603
 604 #ifdef CONFIG_PM_RUNTIME
 605 static int exynos_drm_runtime_resume(struct device *dev)
 606 {
 607         struct platform_device *pdev = to_platform_device(dev);
 608         struct drm_device *drm_dev = platform_get_drvdata(pdev);
 609
 610         /* Check drm_dev here since this function is called from probe */
 611         if (!drm_dev)
 612                 return 0;
 613
 614         return exynos_drm_resume_displays(drm_dev);
 615 }
 616
 617 static int exynos_drm_runtime_suspend(struct device *dev)
 618 {
 619         return exynos_drm_suspend_displays();
 620 }
 621 #endif
 622
 623 static const struct dev_pm_ops drm_pm_ops = {
 624         SET_SYSTEM_SLEEP_PM_OPS(exynos_drm_suspend, exynos_drm_resume)
 625         SET_RUNTIME_PM_OPS(exynos_drm_runtime_suspend,
 626                         exynos_drm_runtime_resume, NULL)
 627 };
 628
 629 static struct platform_driver exynos_drm_platform_driver = {
 630         .probe          = exynos_drm_platform_probe,
 631         .remove         = __devexit_p(exynos_drm_platform_remove),
 632         .driver         = {
 633                 .owner  = THIS_MODULE,
 634                 .name   = "exynos-drm",
 635                 .pm     = &drm_pm_ops,
 636         },
 637 };
 638
 639 static int __init exynos_drm_init(void)
 640 {
 641         int ret, i;
 642
 643         DRM_DEBUG_DRIVER("\n");
 644
 645         for (i = 0; i < EXYNOS_DRM_DISPLAY_NUM_DISPLAYS; i++) {
 646                 displays[i] = kzalloc(sizeof(*displays[i]), GFP_KERNEL);
 647                 if (!displays[i]) {
 648                         ret = -ENOMEM;
 649                         goto out_display;
 650                 }
 651
 652                 ret = exynos_display_init(displays[i], i);
 653                 if (ret)
 654                         goto out_display;
 655         }
 656
 657 #ifdef CONFIG_DRM_EXYNOS_FIMD
 658         ret = platform_driver_register(&fimd_driver);
 659         if (ret < 0)
 660                 goto out_fimd;
 661 #endif
 662
 663 #ifdef CONFIG_DRM_EXYNOS_DP
 664         ret = platform_driver_register(&dp_driver);
 665         if (ret < 0)
 666                 goto out_dp_driver;
 667 #endif
 668
 669 #ifdef CONFIG_DRM_EXYNOS_HDMI
 670         ret = platform_driver_register(&hdmi_driver);
 671         if (ret < 0)
 672                 goto out_hdmi;
 673         ret = platform_driver_register(&mixer_driver);
 674         if (ret < 0)
 675                 goto out_mixer;
 676 #endif
 677
 678 #ifdef CONFIG_DRM_EXYNOS_VIDI
 679         ret = platform_driver_register(&vidi_driver);
 680         if (ret < 0)
 681                 goto out_vidi;
 682 #endif
 683
 684         ret = platform_driver_register(&exynos_drm_platform_driver);
 685         if (ret < 0)
 686                 goto out;
 687
 688         return 0;
 689
 690 out:
 691 #ifdef CONFIG_DRM_EXYNOS_VIDI
 692 out_vidi:
 693         platform_driver_unregister(&vidi_driver);
 694 #endif
 695
 696 #ifdef CONFIG_DRM_EXYNOS_HDMI
 697         platform_driver_unregister(&mixer_driver);
 698 out_mixer:
 699         platform_driver_unregister(&hdmi_driver);
 700 out_hdmi:
 701 #endif
 702
 703         platform_driver_unregister(&dp_driver);
 704 out_dp_driver:
 705 #ifdef CONFIG_DRM_EXYNOS_FIMD
 706         platform_driver_unregister(&fimd_driver);
 707 out_fimd:
 708 #endif
 709 out_display:
 710         for (i = 0; i < EXYNOS_DRM_DISPLAY_NUM_DISPLAYS; i++) {
 711                 if (!displays[i])
 712                         continue;
 713
 714                 exynos_display_remove(displays[i]);
 715                 kfree(displays[i]);
 716         }
 717         return ret;
 718 }
 719
 720 static void __exit exynos_drm_exit(void)
 721 {
 722         int i;
 723
 724         DRM_DEBUG_DRIVER("\n");
 725
 726         platform_driver_unregister(&exynos_drm_platform_driver);
 727
 728 #ifdef CONFIG_DRM_EXYNOS_HDMI
 729         platform_driver_unregister(&mixer_driver);
 730         platform_driver_unregister(&hdmi_driver);
 731 #endif
 732
 733 #ifdef CONFIG_DRM_EXYNOS_VIDI
 734         platform_driver_unregister(&vidi_driver);
 735 #endif
 736
 737         platform_driver_unregister(&dp_driver);
 738 #ifdef CONFIG_DRM_EXYNOS_FIMD
 739         platform_driver_unregister(&fimd_driver);
 740 #endif
 741
 742         for (i = 0; i < EXYNOS_DRM_DISPLAY_NUM_DISPLAYS; i++) {
 743                 if (!displays[i])
 744                         continue;
 745
 746                 exynos_display_remove(displays[i]);
 747                 kfree(displays[i]);
 748         }
 749 }
 750
 751 module_init(exynos_drm_init);
 752 module_exit(exynos_drm_exit);
 753
 754 MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>");
 755 MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
 756 MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>");
 757 MODULE_DESCRIPTION("Samsung SoC DRM Driver");
 758 MODULE_LICENSE("GPL");