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                 struct drm_plane *plane;
 138                 unsigned int possible_crtcs =
 139                         (1 << EXYNOS_DRM_DISPLAY_NUM_DISPLAYS) - 1;
 140
 141                 plane = exynos_plane_init(dev, possible_crtcs, false);
 142                 if (!plane)
 143                         goto err_crtc;
 144         }
 145
 146         ret = drm_vblank_init(dev, EXYNOS_DRM_DISPLAY_NUM_DISPLAYS);
 147         if (ret)
 148                 goto err_crtc;
 149
 150         ret = find_bridge("ptn3460-bridge", &bridge);
 151         if (ret) {
 152                 DRM_ERROR("Could not get PTN3460 bridge %d\n", ret);
 153                 goto err_kds;
 154         }
 155         if (bridge.valid) {
 156                 ret = ptn3460_init(dev, bridge.client, bridge.node);
 157                 if (ret) {
 158                         DRM_ERROR("Failed to initialize the ptn bridge\n");
 159                         goto err_kds;
 160                 }
 161         } else {
 162                 ret = find_bridge("ps8622-bridge", &bridge);
 163                 if (ret) {
 164                         DRM_ERROR("Could not get PS8622 bridge %d\n", ret);
 165                         goto err_kds;
 166                 }
 167
 168                 if (bridge.valid) {
 169                         ret = ps8622_init(dev, bridge.client, bridge.node);
 170                         if (ret) {
 171                                 DRM_ERROR("Failed to initialize the Parade "
 172                                           "bridge\n");
 173                                 goto err_kds;
 174                         }
 175                 }
 176         }
 177
 178         /*
 179          * probe sub drivers such as display controller and hdmi driver,
 180          * that were registered at probe() of platform driver
 181          * to the sub driver and create encoder and connector for them.
 182          */
 183         ret = exynos_drm_device_register(dev);
 184         if (ret)
 185                 goto err_vblank;
 186
 187         /* setup possible_clones. */
 188         exynos_drm_encoder_setup(dev);
 189
 190         /*
 191          * create and configure fb helper and also exynos specific
 192          * fbdev object.
 193          */
 194         ret = exynos_drm_fbdev_init(dev);
 195         if (ret) {
 196                 DRM_ERROR("failed to initialize drm fbdev\n");
 197                 goto err_drm_device;
 198         }
 199
 200         drm_vblank_offdelay = VBLANK_OFF_DELAY;
 201
 202         return 0;
 203
 204 err_drm_device:
 205         exynos_drm_device_unregister(dev);
 206 err_vblank:
 207         drm_vblank_cleanup(dev);
 208 err_crtc:
 209         drm_mode_config_cleanup(dev);
 210 #ifdef CONFIG_DMA_SHARED_BUFFER_USES_KDS
 211         kds_callback_term(&private->kds_cb);
 212 err_kds:
 213 #endif
 214         kfree(private);
 215
 216         return ret;
 217 }
 218
 219 static int exynos_drm_unload(struct drm_device *dev)
 220 {
 221         struct exynos_drm_private *private = dev->dev_private;
 222
 223         DRM_DEBUG("[DEV:%s]\n", dev->devname);
 224
 225         exynos_drm_fbdev_fini(dev);
 226         exynos_drm_device_unregister(dev);
 227         drm_vblank_cleanup(dev);
 228         drm_kms_helper_poll_fini(dev);
 229         drm_mode_config_cleanup(dev);
 230 #ifdef CONFIG_DMA_SHARED_BUFFER_USES_KDS
 231         kds_callback_term(&private->kds_cb);
 232 #endif
 233         kfree(private);
 234
 235         dev->dev_private = NULL;
 236
 237         return 0;
 238 }
 239
 240 static int exynos_drm_open(struct drm_device *dev, struct drm_file *file)
 241 {
 242         struct exynos_drm_file_private *file_private;
 243
 244         DRM_DEBUG("[DEV:%s]\n", dev->devname);
 245
 246         file_private = kzalloc(sizeof(*file_private), GFP_KERNEL);
 247         if (!file_private) {
 248                 DRM_ERROR("failed to allocate exynos_drm_file_private\n");
 249                 return -ENOMEM;
 250         }
 251         INIT_LIST_HEAD(&file_private->gem_cpu_acquire_list);
 252
 253         file->driver_priv = file_private;
 254
 255         return exynos_drm_subdrv_open(dev, file);
 256 }
 257
 258 static void exynos_drm_preclose(struct drm_device *dev,
 259                                         struct drm_file *file)
 260 {
 261         struct exynos_drm_file_private *file_private = file->driver_priv;
 262         struct exynos_drm_gem_obj_node *cur, *d;
 263
 264         DRM_DEBUG("[DEV:%s]\n", dev->devname);
 265
 266         mutex_lock(&dev->struct_mutex);
 267         /* release kds resource sets for outstanding GEM object acquires */
 268         list_for_each_entry_safe(cur, d,
 269                         &file_private->gem_cpu_acquire_list, list) {
 270 #ifdef CONFIG_DMA_SHARED_BUFFER_USES_KDS
 271                 BUG_ON(cur->exynos_gem_obj->resource_set == NULL);
 272                 kds_resource_set_release(&cur->exynos_gem_obj->resource_set);
 273 #endif
 274                 drm_gem_object_unreference(&cur->exynos_gem_obj->base);
 275                 kfree(cur);
 276         }
 277         mutex_unlock(&dev->struct_mutex);
 278         INIT_LIST_HEAD(&file_private->gem_cpu_acquire_list);
 279
 280         exynos_drm_subdrv_close(dev, file);
 281 }
 282
 283 static void exynos_drm_postclose(struct drm_device *dev, struct drm_file *file)
 284 {
 285         DRM_DEBUG("[DEV:%s]\n", dev->devname);
 286
 287         if (!file->driver_priv)
 288                 return;
 289
 290         kfree(file->driver_priv);
 291         file->driver_priv = NULL;
 292 }
 293
 294 static void exynos_drm_lastclose(struct drm_device *dev)
 295 {
 296         DRM_DEBUG("[DEV:%s]\n", dev->devname);
 297
 298         exynos_drm_fbdev_restore_mode(dev);
 299 }
 300
 301 static struct vm_operations_struct exynos_drm_gem_vm_ops = {
 302         .fault = exynos_drm_gem_fault,
 303         .open = drm_gem_vm_open,
 304         .close = drm_gem_vm_close,
 305 };
 306
 307 static struct drm_ioctl_desc exynos_ioctls[] = {
 308         DRM_IOCTL_DEF_DRV(EXYNOS_GEM_CREATE, exynos_drm_gem_create_ioctl,
 309                         DRM_UNLOCKED | DRM_AUTH),
 310         DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MAP_OFFSET,
 311                         exynos_drm_gem_map_offset_ioctl, DRM_UNLOCKED |
 312                         DRM_AUTH),
 313         DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MMAP,
 314                         exynos_drm_gem_mmap_ioctl, DRM_UNLOCKED | DRM_AUTH),
 315         DRM_IOCTL_DEF_DRV(EXYNOS_VIDI_CONNECTION,
 316                         vidi_connection_ioctl, DRM_UNLOCKED | DRM_AUTH),
 317         DRM_IOCTL_DEF_DRV(EXYNOS_GEM_CPU_ACQUIRE,
 318                         exynos_drm_gem_cpu_acquire_ioctl,
 319                         DRM_UNLOCKED | DRM_AUTH),
 320         DRM_IOCTL_DEF_DRV(EXYNOS_GEM_CPU_RELEASE,
 321                         exynos_drm_gem_cpu_release_ioctl,
 322                         DRM_UNLOCKED | DRM_AUTH),
 323 };
 324
 325 static const struct file_operations exynos_drm_driver_fops = {
 326         .owner          = THIS_MODULE,
 327         .open           = drm_open,
 328         .mmap           = exynos_drm_gem_mmap,
 329         .poll           = drm_poll,
 330         .read           = drm_read,
 331         .unlocked_ioctl = drm_ioctl,
 332         .release        = drm_release,
 333 };
 334
 335 static struct drm_driver exynos_drm_driver = {
 336         .driver_features        = DRIVER_HAVE_IRQ | DRIVER_BUS_PLATFORM |
 337                                   DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME,
 338         .load                   = exynos_drm_load,
 339         .unload                 = exynos_drm_unload,
 340         .open                   = exynos_drm_open,
 341         .preclose               = exynos_drm_preclose,
 342         .lastclose              = exynos_drm_lastclose,
 343         .postclose              = exynos_drm_postclose,
 344         .get_vblank_counter     = drm_vblank_count,
 345         .enable_vblank          = exynos_drm_crtc_enable_vblank,
 346         .disable_vblank         = exynos_drm_crtc_disable_vblank,
 347 #if defined(CONFIG_DEBUG_FS)
 348         .debugfs_init           = exynos_drm_debugfs_init,
 349         .debugfs_cleanup        = exynos_drm_debugfs_cleanup,
 350 #endif
 351         .gem_free_object        = exynos_drm_gem_free_object,
 352         .gem_vm_ops             = &exynos_drm_gem_vm_ops,
 353         .dumb_create            = exynos_drm_gem_dumb_create,
 354         .dumb_map_offset        = exynos_drm_gem_dumb_map_offset,
 355         .dumb_destroy           = exynos_drm_gem_dumb_destroy,
 356         .prime_handle_to_fd     = drm_gem_prime_handle_to_fd,
 357         .prime_fd_to_handle     = drm_gem_prime_fd_to_handle,
 358         .gem_prime_export       = exynos_dmabuf_prime_export,
 359         .gem_prime_import       = exynos_dmabuf_prime_import,
 360         .ioctls                 = exynos_ioctls,
 361         .fops                   = &exynos_drm_driver_fops,
 362         .name   = DRIVER_NAME,
 363         .desc   = DRIVER_DESC,
 364         .date   = DRIVER_DATE,
 365         .major  = DRIVER_MAJOR,
 366         .minor  = DRIVER_MINOR,
 367 };
 368
 369 #ifdef CONFIG_EXYNOS_IOMMU
 370 static int iommu_init(struct platform_device *pdev)
 371 {
 372         /* DRM device expects a IOMMU mapping to be already
 373          * created in FIMD. Else this function should
 374          * throw an error.
 375          */
 376         if (exynos_drm_common_mapping==NULL) {
 377                 printk(KERN_ERR "exynos drm common mapping is invalid\n");
 378                 return -1;
 379         }
 380
 381         /*
 382          * The ordering in Makefile warrants that this is initialized after
 383          * FIMD, so only just ensure that it works as expected and we are
 384          * reusing the mapping originally created in exynos_drm_fimd.c.
 385          */
 386         WARN_ON(!exynos_drm_common_mapping);
 387         if (!s5p_create_iommu_mapping(&pdev->dev, 0,
 388                                 0, 0, exynos_drm_common_mapping)) {
 389                 printk(KERN_ERR "failed to create IOMMU mapping\n");
 390                 return -1;
 391         }
 392
 393         return 0;
 394 }
 395
 396 static void iommu_deinit(struct platform_device *pdev)
 397 {
 398         /* detach the device and mapping */
 399         s5p_destroy_iommu_mapping(&pdev->dev);
 400         DRM_DEBUG("released the IOMMU mapping\n");
 401
 402         return;
 403 }
 404 #endif
 405
 406 static int exynos_drm_platform_probe(struct platform_device *pdev)
 407 {
 408         struct device *dev = &pdev->dev;
 409         int ret;
 410
 411         DRM_DEBUG("[PDEV:%s]\n", pdev->name);
 412
 413 #ifdef CONFIG_EXYNOS_IOMMU
 414         if (iommu_init(pdev)) {
 415                 DRM_ERROR("failed to initialize IOMMU\n");
 416                 return -ENODEV;
 417         }
 418 #endif
 419
 420         exynos_drm_driver.num_ioctls = DRM_ARRAY_SIZE(exynos_ioctls);
 421
 422         pm_vt_switch_required(dev, false);
 423         pm_runtime_enable(dev);
 424         pm_runtime_get_sync(dev);
 425
 426         ret = drm_platform_init(&exynos_drm_driver, pdev);
 427 #ifdef CONFIG_EXYNOS_IOMMU
 428         if (ret)
 429                 iommu_deinit(pdev);
 430 #endif
 431
 432         return ret;
 433 }
 434
 435 static int __devexit exynos_drm_platform_remove(struct platform_device *pdev)
 436 {
 437         struct device *dev = &pdev->dev;
 438
 439         DRM_DEBUG("[PDEV:%s]\n", pdev->name);
 440
 441         pm_vt_switch_unregister(dev);
 442         pm_runtime_disable(dev);
 443
 444         drm_platform_exit(&exynos_drm_driver, pdev);
 445
 446 #ifdef CONFIG_EXYNOS_IOMMU
 447         iommu_deinit(pdev);
 448 #endif
 449         return 0;
 450 }
 451
 452 const char *exynos_display_type_name(const struct exynos_drm_display *display)
 453 {
 454         switch (display->display_type) {
 455         case EXYNOS_DRM_DISPLAY_TYPE_FIMD:
 456                 return "FIMD";
 457         case EXYNOS_DRM_DISPLAY_TYPE_MIXER:
 458                 return "MIXER";
 459         case EXYNOS_DRM_DISPLAY_TYPE_VIDI:
 460                 return "VIDI";
 461         default:
 462                 return "?";
 463         }
 464 }
 465
 466 void exynos_display_attach_panel(enum exynos_drm_display_type type,
 467                 struct exynos_panel_ops *ops, void *ctx)
 468 {
 469         int i;
 470         for (i = 0; i < EXYNOS_DRM_DISPLAY_NUM_DISPLAYS; i++) {
 471                 if (displays[i]->display_type == type) {
 472                         displays[i]->panel_ctx = ctx;
 473                         displays[i]->panel_ops = ops;
 474                         return;
 475                 }
 476         }
 477 }
 478
 479 void exynos_display_attach_controller(enum exynos_drm_display_type type,
 480                 struct exynos_controller_ops *ops, void *ctx)
 481 {
 482         int i;
 483         for (i = 0; i < EXYNOS_DRM_DISPLAY_NUM_DISPLAYS; i++) {
 484                 if (displays[i]->display_type == type) {
 485                         displays[i]->controller_ctx = ctx;
 486                         displays[i]->controller_ops = ops;
 487                         return;
 488                 }
 489         }
 490 }
 491
 492 static int display_subdrv_probe(struct drm_device *drm_dev,
 493                 struct exynos_drm_subdrv *subdrv)
 494 {
 495         struct exynos_drm_display *display = subdrv->display;
 496         int ret;
 497
 498         if (!display->controller_ops || !display->panel_ops)
 499                 return -EINVAL;
 500
 501         if (display->controller_ops->subdrv_probe) {
 502                 ret = display->controller_ops->subdrv_probe(
 503                                 display->controller_ctx, drm_dev);
 504                 if (ret)
 505                         return ret;
 506         }
 507
 508         if (display->panel_ops->subdrv_probe) {
 509                 ret = display->panel_ops->subdrv_probe(display->panel_ctx,
 510                                 drm_dev);
 511                 if (ret)
 512                         return ret;
 513         }
 514
 515         return 0;
 516 }
 517
 518 int exynos_display_init(struct exynos_drm_display *display,
 519                 enum exynos_drm_display_type type)
 520 {
 521         struct exynos_drm_subdrv *subdrv;
 522
 523         subdrv = kzalloc(sizeof(*subdrv), GFP_KERNEL);
 524         if (!subdrv) {
 525                 DRM_ERROR("Failed to allocate display subdrv\n");
 526                 return -ENOMEM;
 527         }
 528
 529         display->display_type = type;
 530         display->pipe = -1;
 531         display->subdrv = subdrv;
 532
 533         subdrv->probe = display_subdrv_probe;
 534         subdrv->display = display;
 535         exynos_drm_subdrv_register(subdrv);
 536
 537         return 0;
 538 }
 539
 540 void exynos_display_remove(struct exynos_drm_display *display)
 541 {
 542         if (display->subdrv) {
 543                 exynos_drm_subdrv_unregister(display->subdrv);
 544                 kfree(display->subdrv);
 545         }
 546 }
 547
 548 static int exynos_drm_resume_displays(struct drm_device *dev)
 549 {
 550         int i;
 551
 552         for (i = 0; i < EXYNOS_DRM_DISPLAY_NUM_DISPLAYS; i++) {
 553                 struct exynos_drm_display *display = displays[i];
 554                 struct drm_connector *connector = display->subdrv->connector;
 555
 556                 if (!connector || !connector->funcs->dpms)
 557                         continue;
 558
 559                 connector->funcs->dpms(connector, display->suspend_dpms);
 560         }
 561
 562         drm_helper_resume_force_mode(dev);
 563
 564         return 0;
 565 }
 566
 567 static int exynos_drm_suspend_displays(void)
 568 {
 569         int i;
 570
 571         for (i = 0; i < EXYNOS_DRM_DISPLAY_NUM_DISPLAYS; i++) {
 572                 struct exynos_drm_display *display = displays[i];
 573                 struct drm_connector *connector = display->subdrv->connector;
 574
 575                 if (!connector)
 576                         continue;
 577
 578                 display->suspend_dpms = connector->dpms;
 579                 if (connector->funcs->dpms)
 580                         connector->funcs->dpms(connector, DRM_MODE_DPMS_OFF);
 581         }
 582         return 0;
 583 }
 584
 585 #ifdef CONFIG_PM_SLEEP
 586 static int exynos_drm_suspend(struct device *dev)
 587 {
 588         if (pm_runtime_suspended(dev))
 589                 return 0;
 590
 591         return exynos_drm_suspend_displays();
 592 }
 593
 594 static int exynos_drm_resume(struct device *dev)
 595 {
 596         struct platform_device *pdev = to_platform_device(dev);
 597         struct drm_device *drm_dev = platform_get_drvdata(pdev);
 598
 599         if (pm_runtime_suspended(dev))
 600                 return 0;
 601
 602         return exynos_drm_resume_displays(drm_dev);
 603 }
 604 #endif
 605
 606 #ifdef CONFIG_PM_RUNTIME
 607 static int exynos_drm_runtime_resume(struct device *dev)
 608 {
 609         struct platform_device *pdev = to_platform_device(dev);
 610         struct drm_device *drm_dev = platform_get_drvdata(pdev);
 611
 612         /* Check drm_dev here since this function is called from probe */
 613         if (!drm_dev)
 614                 return 0;
 615
 616         return exynos_drm_resume_displays(drm_dev);
 617 }
 618
 619 static int exynos_drm_runtime_suspend(struct device *dev)
 620 {
 621         return exynos_drm_suspend_displays();
 622 }
 623 #endif
 624
 625 static const struct dev_pm_ops drm_pm_ops = {
 626         SET_SYSTEM_SLEEP_PM_OPS(exynos_drm_suspend, exynos_drm_resume)
 627         SET_RUNTIME_PM_OPS(exynos_drm_runtime_suspend,
 628                         exynos_drm_runtime_resume, NULL)
 629 };
 630
 631 static struct platform_driver exynos_drm_platform_driver = {
 632         .probe          = exynos_drm_platform_probe,
 633         .remove         = __devexit_p(exynos_drm_platform_remove),
 634         .driver         = {
 635                 .owner  = THIS_MODULE,
 636                 .name   = "exynos-drm",
 637                 .pm     = &drm_pm_ops,
 638         },
 639 };
 640
 641 static int __init exynos_drm_init(void)
 642 {
 643         int ret, i;
 644
 645         DRM_DEBUG_DRIVER("\n");
 646
 647         for (i = 0; i < EXYNOS_DRM_DISPLAY_NUM_DISPLAYS; i++) {
 648                 displays[i] = kzalloc(sizeof(*displays[i]), GFP_KERNEL);
 649                 if (!displays[i]) {
 650                         ret = -ENOMEM;
 651                         goto out_display;
 652                 }
 653
 654                 ret = exynos_display_init(displays[i], i);
 655                 if (ret)
 656                         goto out_display;
 657         }
 658
 659 #ifdef CONFIG_DRM_EXYNOS_FIMD
 660         ret = platform_driver_register(&fimd_driver);
 661         if (ret < 0)
 662                 goto out_fimd;
 663 #endif
 664
 665 #ifdef CONFIG_DRM_EXYNOS_DP
 666         ret = platform_driver_register(&dp_driver);
 667         if (ret < 0)
 668                 goto out_dp_driver;
 669 #endif
 670
 671 #ifdef CONFIG_DRM_EXYNOS_HDMI
 672         ret = platform_driver_register(&hdmi_driver);
 673         if (ret < 0)
 674                 goto out_hdmi;
 675         ret = platform_driver_register(&mixer_driver);
 676         if (ret < 0)
 677                 goto out_mixer;
 678 #endif
 679
 680 #ifdef CONFIG_DRM_EXYNOS_VIDI
 681         ret = platform_driver_register(&vidi_driver);
 682         if (ret < 0)
 683                 goto out_vidi;
 684 #endif
 685
 686         ret = platform_driver_register(&exynos_drm_platform_driver);
 687         if (ret < 0)
 688                 goto out;
 689
 690         return 0;
 691
 692 out:
 693 #ifdef CONFIG_DRM_EXYNOS_VIDI
 694 out_vidi:
 695         platform_driver_unregister(&vidi_driver);
 696 #endif
 697
 698 #ifdef CONFIG_DRM_EXYNOS_HDMI
 699         platform_driver_unregister(&mixer_driver);
 700 out_mixer:
 701         platform_driver_unregister(&hdmi_driver);
 702 out_hdmi:
 703 #endif
 704
 705         platform_driver_unregister(&dp_driver);
 706 out_dp_driver:
 707 #ifdef CONFIG_DRM_EXYNOS_FIMD
 708         platform_driver_unregister(&fimd_driver);
 709 out_fimd:
 710 #endif
 711 out_display:
 712         for (i = 0; i < EXYNOS_DRM_DISPLAY_NUM_DISPLAYS; i++) {
 713                 if (!displays[i])
 714                         continue;
 715
 716                 exynos_display_remove(displays[i]);
 717                 kfree(displays[i]);
 718         }
 719         return ret;
 720 }
 721
 722 static void __exit exynos_drm_exit(void)
 723 {
 724         int i;
 725
 726         DRM_DEBUG_DRIVER("\n");
 727
 728         platform_driver_unregister(&exynos_drm_platform_driver);
 729
 730 #ifdef CONFIG_DRM_EXYNOS_HDMI
 731         platform_driver_unregister(&mixer_driver);
 732         platform_driver_unregister(&hdmi_driver);
 733 #endif
 734
 735 #ifdef CONFIG_DRM_EXYNOS_VIDI
 736         platform_driver_unregister(&vidi_driver);
 737 #endif
 738
 739         platform_driver_unregister(&dp_driver);
 740 #ifdef CONFIG_DRM_EXYNOS_FIMD
 741         platform_driver_unregister(&fimd_driver);
 742 #endif
 743
 744         for (i = 0; i < EXYNOS_DRM_DISPLAY_NUM_DISPLAYS; i++) {
 745                 if (!displays[i])
 746                         continue;
 747
 748                 exynos_display_remove(displays[i]);
 749                 kfree(displays[i]);
 750         }
 751 }
 752
 753 module_init(exynos_drm_init);
 754 module_exit(exynos_drm_exit);
 755
 756 MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>");
 757 MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
 758 MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>");
 759 MODULE_DESCRIPTION("Samsung SoC DRM Driver");
 760 MODULE_LICENSE("GPL");