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  * This program is free software; you can redistribute  it and/or modify it
   9  * under  the terms of  the GNU General  Public License as published by the
  10  * Free Software Foundation;  either version 2 of the  License, or (at your
  11  * option) any later version.
  12  */
  13
  14 #include <linux/pm_runtime.h>
  15 #include <drm/drmP.h>
  16 #include <drm/drm_crtc_helper.h>
  17
  18 #include <linux/anon_inodes.h>
  19 #include <linux/component.h>
  20
  21 #include <drm/exynos_drm.h>
  22
  23 #include "exynos_drm_drv.h"
  24 #include "exynos_drm_crtc.h"
  25 #include "exynos_drm_encoder.h"
  26 #include "exynos_drm_fbdev.h"
  27 #include "exynos_drm_fb.h"
  28 #include "exynos_drm_gem.h"
  29 #include "exynos_drm_plane.h"
  30 #include "exynos_drm_vidi.h"
  31 #include "exynos_drm_dmabuf.h"
  32 #include "exynos_drm_g2d.h"
  33 #include "exynos_drm_ipp.h"
  34 #include "exynos_drm_iommu.h"
  35
  36 #define DRIVER_NAME     "exynos"
  37 #define DRIVER_DESC     "Samsung SoC DRM"
  38 #define DRIVER_DATE     "20110530"
  39 #define DRIVER_MAJOR    1
  40 #define DRIVER_MINOR    0
  41
  42 #define VBLANK_OFF_DELAY        50000
  43
  44 static struct platform_device *exynos_drm_pdev;
  45
  46 static DEFINE_MUTEX(drm_component_lock);
  47 static LIST_HEAD(drm_component_list);
  48
  49 struct component_dev {
  50         struct list_head list;
  51         struct device *dev;
  52 };
  53
  54 static int exynos_drm_load(struct drm_device *dev, unsigned long flags)
  55 {
  56         struct exynos_drm_private *private;
  57         int ret;
  58         int nr;
  59
  60         private = kzalloc(sizeof(struct exynos_drm_private), GFP_KERNEL);
  61         if (!private)
  62                 return -ENOMEM;
  63
  64         INIT_LIST_HEAD(&private->pageflip_event_list);
  65         dev_set_drvdata(dev->dev, dev);
  66         dev->dev_private = (void *)private;
  67
  68         /*
  69          * create mapping to manage iommu table and set a pointer to iommu
  70          * mapping structure to iommu_mapping of private data.
  71          * also this iommu_mapping can be used to check if iommu is supported
  72          * or not.
  73          */
  74         ret = drm_create_iommu_mapping(dev);
  75         if (ret < 0) {
  76                 DRM_ERROR("failed to create iommu mapping.\n");
  77                 goto err_free_private;
  78         }
  79
  80         drm_mode_config_init(dev);
  81
  82         exynos_drm_mode_config_init(dev);
  83
  84         for (nr = 0; nr < MAX_PLANE; nr++) {
  85                 struct drm_plane *plane;
  86                 unsigned long possible_crtcs = (1 << MAX_CRTC) - 1;
  87
  88                 plane = exynos_plane_init(dev, possible_crtcs, false);
  89                 if (!plane)
  90                         goto err_mode_config_cleanup;
  91         }
  92
  93         /* init kms poll for handling hpd */
  94         drm_kms_helper_poll_init(dev);
  95
  96         ret = drm_vblank_init(dev, MAX_CRTC);
  97         if (ret)
  98                 goto err_mode_config_cleanup;
  99
 100         /* setup possible_clones. */
 101         exynos_drm_encoder_setup(dev);
 102
 103         drm_vblank_offdelay = VBLANK_OFF_DELAY;
 104
 105         platform_set_drvdata(dev->platformdev, dev);
 106
 107         /* Try to bind all sub drivers. */
 108         ret = component_bind_all(dev->dev, dev);
 109         if (ret)
 110                 goto err_cleanup_vblank;
 111
 112         /* Probe non kms sub drivers and virtual display driver. */
 113         ret = exynos_drm_device_subdrv_probe(dev);
 114         if (ret)
 115                 goto err_unbind_all;
 116
 117         /* force connectors detection */
 118         drm_helper_hpd_irq_event(dev);
 119
 120         return 0;
 121
 122 err_unbind_all:
 123         component_unbind_all(dev->dev, dev);
 124 err_cleanup_vblank:
 125         drm_vblank_cleanup(dev);
 126 err_mode_config_cleanup:
 127         drm_mode_config_cleanup(dev);
 128         drm_release_iommu_mapping(dev);
 129 err_free_private:
 130         kfree(private);
 131
 132         return ret;
 133 }
 134
 135 static int exynos_drm_unload(struct drm_device *dev)
 136 {
 137         exynos_drm_device_subdrv_remove(dev);
 138
 139         exynos_drm_fbdev_fini(dev);
 140         drm_vblank_cleanup(dev);
 141         drm_kms_helper_poll_fini(dev);
 142         drm_mode_config_cleanup(dev);
 143
 144         drm_release_iommu_mapping(dev);
 145         kfree(dev->dev_private);
 146
 147         component_unbind_all(dev->dev, dev);
 148         dev->dev_private = NULL;
 149
 150         return 0;
 151 }
 152
 153 static const struct file_operations exynos_drm_gem_fops = {
 154         .mmap = exynos_drm_gem_mmap_buffer,
 155 };
 156
 157 static int exynos_drm_suspend(struct drm_device *dev, pm_message_t state)
 158 {
 159         struct drm_connector *connector;
 160
 161         drm_modeset_lock_all(dev);
 162         list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
 163                 int old_dpms = connector->dpms;
 164
 165                 if (connector->funcs->dpms)
 166                         connector->funcs->dpms(connector, DRM_MODE_DPMS_OFF);
 167
 168                 /* Set the old mode back to the connector for resume */
 169                 connector->dpms = old_dpms;
 170         }
 171         drm_modeset_unlock_all(dev);
 172
 173         return 0;
 174 }
 175
 176 static int exynos_drm_resume(struct drm_device *dev)
 177 {
 178         struct drm_connector *connector;
 179
 180         drm_modeset_lock_all(dev);
 181         list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
 182                 if (connector->funcs->dpms)
 183                         connector->funcs->dpms(connector, connector->dpms);
 184         }
 185         drm_modeset_unlock_all(dev);
 186
 187         drm_helper_resume_force_mode(dev);
 188
 189         return 0;
 190 }
 191
 192 static int exynos_drm_open(struct drm_device *dev, struct drm_file *file)
 193 {
 194         struct drm_exynos_file_private *file_priv;
 195         struct file *anon_filp;
 196         int ret;
 197
 198         file_priv = kzalloc(sizeof(*file_priv), GFP_KERNEL);
 199         if (!file_priv)
 200                 return -ENOMEM;
 201
 202         file->driver_priv = file_priv;
 203
 204         ret = exynos_drm_subdrv_open(dev, file);
 205         if (ret)
 206                 goto err_file_priv_free;
 207
 208         anon_filp = anon_inode_getfile("exynos_gem", &exynos_drm_gem_fops,
 209                                         NULL, 0);
 210         if (IS_ERR(anon_filp)) {
 211                 ret = PTR_ERR(anon_filp);
 212                 goto err_subdrv_close;
 213         }
 214
 215         anon_filp->f_mode = FMODE_READ | FMODE_WRITE;
 216         file_priv->anon_filp = anon_filp;
 217
 218         return ret;
 219
 220 err_subdrv_close:
 221         exynos_drm_subdrv_close(dev, file);
 222
 223 err_file_priv_free:
 224         kfree(file_priv);
 225         file->driver_priv = NULL;
 226         return ret;
 227 }
 228
 229 static void exynos_drm_preclose(struct drm_device *dev,
 230                                         struct drm_file *file)
 231 {
 232         exynos_drm_subdrv_close(dev, file);
 233 }
 234
 235 static void exynos_drm_postclose(struct drm_device *dev, struct drm_file *file)
 236 {
 237         struct exynos_drm_private *private = dev->dev_private;
 238         struct drm_exynos_file_private *file_priv;
 239         struct drm_pending_vblank_event *v, *vt;
 240         struct drm_pending_event *e, *et;
 241         unsigned long flags;
 242
 243         if (!file->driver_priv)
 244                 return;
 245
 246         /* Release all events not unhandled by page flip handler. */
 247         spin_lock_irqsave(&dev->event_lock, flags);
 248         list_for_each_entry_safe(v, vt, &private->pageflip_event_list,
 249                         base.link) {
 250                 if (v->base.file_priv == file) {
 251                         list_del(&v->base.link);
 252                         drm_vblank_put(dev, v->pipe);
 253                         v->base.destroy(&v->base);
 254                 }
 255         }
 256
 257         /* Release all events handled by page flip handler but not freed. */
 258         list_for_each_entry_safe(e, et, &file->event_list, link) {
 259                 list_del(&e->link);
 260                 e->destroy(e);
 261         }
 262         spin_unlock_irqrestore(&dev->event_lock, flags);
 263
 264         file_priv = file->driver_priv;
 265         if (file_priv->anon_filp)
 266                 fput(file_priv->anon_filp);
 267
 268         kfree(file->driver_priv);
 269         file->driver_priv = NULL;
 270 }
 271
 272 static void exynos_drm_lastclose(struct drm_device *dev)
 273 {
 274         exynos_drm_fbdev_restore_mode(dev);
 275 }
 276
 277 static const struct vm_operations_struct exynos_drm_gem_vm_ops = {
 278         .fault = exynos_drm_gem_fault,
 279         .open = drm_gem_vm_open,
 280         .close = drm_gem_vm_close,
 281 };
 282
 283 static const struct drm_ioctl_desc exynos_ioctls[] = {
 284         DRM_IOCTL_DEF_DRV(EXYNOS_GEM_CREATE, exynos_drm_gem_create_ioctl,
 285                         DRM_UNLOCKED | DRM_AUTH),
 286         DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MAP_OFFSET,
 287                         exynos_drm_gem_map_offset_ioctl, DRM_UNLOCKED |
 288                         DRM_AUTH),
 289         DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MMAP,
 290                         exynos_drm_gem_mmap_ioctl, DRM_UNLOCKED | DRM_AUTH),
 291         DRM_IOCTL_DEF_DRV(EXYNOS_GEM_GET,
 292                         exynos_drm_gem_get_ioctl, DRM_UNLOCKED),
 293         DRM_IOCTL_DEF_DRV(EXYNOS_VIDI_CONNECTION,
 294                         vidi_connection_ioctl, DRM_UNLOCKED | DRM_AUTH),
 295         DRM_IOCTL_DEF_DRV(EXYNOS_G2D_GET_VER,
 296                         exynos_g2d_get_ver_ioctl, DRM_UNLOCKED | DRM_AUTH),
 297         DRM_IOCTL_DEF_DRV(EXYNOS_G2D_SET_CMDLIST,
 298                         exynos_g2d_set_cmdlist_ioctl, DRM_UNLOCKED | DRM_AUTH),
 299         DRM_IOCTL_DEF_DRV(EXYNOS_G2D_EXEC,
 300                         exynos_g2d_exec_ioctl, DRM_UNLOCKED | DRM_AUTH),
 301         DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_PROPERTY,
 302                         exynos_drm_ipp_get_property, DRM_UNLOCKED | DRM_AUTH),
 303         DRM_IOCTL_DEF_DRV(EXYNOS_IPP_SET_PROPERTY,
 304                         exynos_drm_ipp_set_property, DRM_UNLOCKED | DRM_AUTH),
 305         DRM_IOCTL_DEF_DRV(EXYNOS_IPP_QUEUE_BUF,
 306                         exynos_drm_ipp_queue_buf, DRM_UNLOCKED | DRM_AUTH),
 307         DRM_IOCTL_DEF_DRV(EXYNOS_IPP_CMD_CTRL,
 308                         exynos_drm_ipp_cmd_ctrl, DRM_UNLOCKED | DRM_AUTH),
 309 };
 310
 311 static const struct file_operations exynos_drm_driver_fops = {
 312         .owner          = THIS_MODULE,
 313         .open           = drm_open,
 314         .mmap           = exynos_drm_gem_mmap,
 315         .poll           = drm_poll,
 316         .read           = drm_read,
 317         .unlocked_ioctl = drm_ioctl,
 318 #ifdef CONFIG_COMPAT
 319         .compat_ioctl = drm_compat_ioctl,
 320 #endif
 321         .release        = drm_release,
 322 };
 323
 324 static struct drm_driver exynos_drm_driver = {
 325         .driver_features        = DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME,
 326         .load                   = exynos_drm_load,
 327         .unload                 = exynos_drm_unload,
 328         .suspend                = exynos_drm_suspend,
 329         .resume                 = exynos_drm_resume,
 330         .open                   = exynos_drm_open,
 331         .preclose               = exynos_drm_preclose,
 332         .lastclose              = exynos_drm_lastclose,
 333         .postclose              = exynos_drm_postclose,
 334         .get_vblank_counter     = drm_vblank_count,
 335         .enable_vblank          = exynos_drm_crtc_enable_vblank,
 336         .disable_vblank         = exynos_drm_crtc_disable_vblank,
 337         .gem_free_object        = exynos_drm_gem_free_object,
 338         .gem_vm_ops             = &exynos_drm_gem_vm_ops,
 339         .dumb_create            = exynos_drm_gem_dumb_create,
 340         .dumb_map_offset        = exynos_drm_gem_dumb_map_offset,
 341         .dumb_destroy           = drm_gem_dumb_destroy,
 342         .prime_handle_to_fd     = drm_gem_prime_handle_to_fd,
 343         .prime_fd_to_handle     = drm_gem_prime_fd_to_handle,
 344         .gem_prime_export       = exynos_dmabuf_prime_export,
 345         .gem_prime_import       = exynos_dmabuf_prime_import,
 346         .ioctls                 = exynos_ioctls,
 347         .num_ioctls             = ARRAY_SIZE(exynos_ioctls),
 348         .fops                   = &exynos_drm_driver_fops,
 349         .name   = DRIVER_NAME,
 350         .desc   = DRIVER_DESC,
 351         .date   = DRIVER_DATE,
 352         .major  = DRIVER_MAJOR,
 353         .minor  = DRIVER_MINOR,
 354 };
 355
 356 #ifdef CONFIG_PM_SLEEP
 357 static int exynos_drm_sys_suspend(struct device *dev)
 358 {
 359         struct drm_device *drm_dev = dev_get_drvdata(dev);
 360         pm_message_t message;
 361
 362         if (pm_runtime_suspended(dev))
 363                 return 0;
 364
 365         message.event = PM_EVENT_SUSPEND;
 366         return exynos_drm_suspend(drm_dev, message);
 367 }
 368
 369 static int exynos_drm_sys_resume(struct device *dev)
 370 {
 371         struct drm_device *drm_dev = dev_get_drvdata(dev);
 372
 373         if (pm_runtime_suspended(dev))
 374                 return 0;
 375
 376         return exynos_drm_resume(drm_dev);
 377 }
 378 #endif
 379
 380 static const struct dev_pm_ops exynos_drm_pm_ops = {
 381         SET_SYSTEM_SLEEP_PM_OPS(exynos_drm_sys_suspend, exynos_drm_sys_resume)
 382 };
 383
 384 int exynos_drm_component_add(struct device *dev,
 385                                 const struct component_ops *ops)
 386 {
 387         struct component_dev *cdev;
 388         int ret;
 389
 390         cdev = kzalloc(sizeof(*cdev), GFP_KERNEL);
 391         if (!cdev)
 392                 return -ENOMEM;
 393
 394         ret = component_add(dev, ops);
 395         if (ret) {
 396                 kfree(cdev);
 397                 return ret;
 398         }
 399
 400         cdev->dev = dev;
 401
 402         mutex_lock(&drm_component_lock);
 403         list_add_tail(&cdev->list, &drm_component_list);
 404         mutex_unlock(&drm_component_lock);
 405
 406         return 0;
 407 }
 408
 409 void exynos_drm_component_del(struct device *dev,
 410                                 const struct component_ops *ops)
 411 {
 412         struct component_dev *cdev, *next;
 413
 414         mutex_lock(&drm_component_lock);
 415
 416         list_for_each_entry_safe(cdev, next, &drm_component_list, list) {
 417                 if (dev == cdev->dev) {
 418                         list_del(&cdev->list);
 419                         kfree(cdev);
 420                         break;
 421                 }
 422         }
 423
 424         mutex_unlock(&drm_component_lock);
 425
 426         component_del(dev, ops);
 427 }
 428
 429 static int compare_of(struct device *dev, void *data)
 430 {
 431         return dev == (struct device *)data;
 432 }
 433
 434 static int exynos_drm_add_components(struct device *dev, struct master *m)
 435 {
 436         unsigned int attached_cnt = 0;
 437         struct component_dev *cdev;
 438
 439         mutex_lock(&drm_component_lock);
 440
 441         list_for_each_entry(cdev, &drm_component_list, list) {
 442                 int ret;
 443
 444                 mutex_unlock(&drm_component_lock);
 445
 446                 ret = component_master_add_child(m, compare_of, cdev->dev);
 447                 if (!ret)
 448                         attached_cnt++;
 449
 450                 mutex_lock(&drm_component_lock);
 451         }
 452
 453         mutex_unlock(&drm_component_lock);
 454
 455         if (!attached_cnt)
 456                 return -ENXIO;
 457
 458         return 0;
 459 }
 460
 461 static int exynos_drm_bind(struct device *dev)
 462 {
 463         return drm_platform_init(&exynos_drm_driver, to_platform_device(dev));
 464 }
 465
 466 static void exynos_drm_unbind(struct device *dev)
 467 {
 468         drm_put_dev(dev_get_drvdata(dev));
 469 }
 470
 471 static const struct component_master_ops exynos_drm_ops = {
 472         .add_components = exynos_drm_add_components,
 473         .bind           = exynos_drm_bind,
 474         .unbind         = exynos_drm_unbind,
 475 };
 476
 477 static int exynos_drm_platform_probe(struct platform_device *pdev)
 478 {
 479         int ret;
 480
 481         pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
 482         exynos_drm_driver.num_ioctls = DRM_ARRAY_SIZE(exynos_ioctls);
 483
 484 #ifdef CONFIG_DRM_EXYNOS_FIMD
 485         ret = platform_driver_register(&fimd_driver);
 486         if (ret < 0)
 487                 return ret;
 488 #endif
 489
 490 #ifdef CONFIG_DRM_EXYNOS_DP
 491         ret = platform_driver_register(&dp_driver);
 492         if (ret < 0)
 493                 goto err_unregister_fimd_drv;
 494 #endif
 495
 496 #ifdef CONFIG_DRM_EXYNOS_DSI
 497         ret = platform_driver_register(&dsi_driver);
 498         if (ret < 0)
 499                 goto err_unregister_dp_drv;
 500 #endif
 501
 502 #ifdef CONFIG_DRM_EXYNOS_HDMI
 503         ret = platform_driver_register(&mixer_driver);
 504         if (ret < 0)
 505                 goto err_unregister_dsi_drv;
 506         ret = platform_driver_register(&hdmi_driver);
 507         if (ret < 0)
 508                 goto err_unregister_mixer_drv;
 509 #endif
 510
 511 #ifdef CONFIG_DRM_EXYNOS_G2D
 512         ret = platform_driver_register(&g2d_driver);
 513         if (ret < 0)
 514                 goto err_unregister_hdmi_drv;
 515 #endif
 516
 517 #ifdef CONFIG_DRM_EXYNOS_FIMC
 518         ret = platform_driver_register(&fimc_driver);
 519         if (ret < 0)
 520                 goto err_unregister_g2d_drv;
 521 #endif
 522
 523 #ifdef CONFIG_DRM_EXYNOS_ROTATOR
 524         ret = platform_driver_register(&rotator_driver);
 525         if (ret < 0)
 526                 goto err_unregister_fimc_drv;
 527 #endif
 528
 529 #ifdef CONFIG_DRM_EXYNOS_GSC
 530         ret = platform_driver_register(&gsc_driver);
 531         if (ret < 0)
 532                 goto err_unregister_rotator_drv;
 533 #endif
 534
 535 #ifdef CONFIG_DRM_EXYNOS_IPP
 536         ret = platform_driver_register(&ipp_driver);
 537         if (ret < 0)
 538                 goto err_unregister_gsc_drv;
 539
 540         ret = exynos_platform_device_ipp_register();
 541         if (ret < 0)
 542                 goto err_unregister_ipp_drv;
 543 #endif
 544
 545         ret = component_master_add(&pdev->dev, &exynos_drm_ops);
 546         if (ret < 0)
 547                 DRM_DEBUG_KMS("re-tried by last sub driver probed later.\n");
 548
 549         return 0;
 550
 551 #ifdef CONFIG_DRM_EXYNOS_IPP
 552 err_unregister_ipp_drv:
 553         platform_driver_unregister(&ipp_driver);
 554 err_unregister_gsc_drv:
 555 #endif
 556
 557 #ifdef CONFIG_DRM_EXYNOS_GSC
 558         platform_driver_unregister(&gsc_driver);
 559 err_unregister_rotator_drv:
 560 #endif
 561
 562 #ifdef CONFIG_DRM_EXYNOS_ROTATOR
 563         platform_driver_unregister(&rotator_driver);
 564 err_unregister_fimc_drv:
 565 #endif
 566
 567 #ifdef CONFIG_DRM_EXYNOS_FIMC
 568         platform_driver_unregister(&fimc_driver);
 569 err_unregister_g2d_drv:
 570 #endif
 571
 572 #ifdef CONFIG_DRM_EXYNOS_G2D
 573         platform_driver_unregister(&g2d_driver);
 574 err_unregister_hdmi_drv:
 575 #endif
 576
 577 #ifdef CONFIG_DRM_EXYNOS_HDMI
 578         platform_driver_unregister(&hdmi_driver);
 579 err_unregister_mixer_drv:
 580         platform_driver_unregister(&mixer_driver);
 581 err_unregister_dsi_drv:
 582 #endif
 583
 584 #ifdef CONFIG_DRM_EXYNOS_DSI
 585         platform_driver_unregister(&dsi_driver);
 586 err_unregister_dp_drv:
 587 #endif
 588
 589 #ifdef CONFIG_DRM_EXYNOS_DP
 590         platform_driver_unregister(&dp_driver);
 591 err_unregister_fimd_drv:
 592 #endif
 593
 594 #ifdef CONFIG_DRM_EXYNOS_FIMD
 595         platform_driver_unregister(&fimd_driver);
 596 #endif
 597         return ret;
 598 }
 599
 600 static int exynos_drm_platform_remove(struct platform_device *pdev)
 601 {
 602 #ifdef CONFIG_DRM_EXYNOS_IPP
 603         exynos_platform_device_ipp_unregister();
 604         platform_driver_unregister(&ipp_driver);
 605 #endif
 606
 607 #ifdef CONFIG_DRM_EXYNOS_GSC
 608         platform_driver_unregister(&gsc_driver);
 609 #endif
 610
 611 #ifdef CONFIG_DRM_EXYNOS_ROTATOR
 612         platform_driver_unregister(&rotator_driver);
 613 #endif
 614
 615 #ifdef CONFIG_DRM_EXYNOS_FIMC
 616         platform_driver_unregister(&fimc_driver);
 617 #endif
 618
 619 #ifdef CONFIG_DRM_EXYNOS_G2D
 620         platform_driver_unregister(&g2d_driver);
 621 #endif
 622
 623 #ifdef CONFIG_DRM_EXYNOS_HDMI
 624         platform_driver_unregister(&mixer_driver);
 625         platform_driver_unregister(&hdmi_driver);
 626 #endif
 627
 628 #ifdef CONFIG_DRM_EXYNOS_FIMD
 629         platform_driver_unregister(&fimd_driver);
 630 #endif
 631
 632 #ifdef CONFIG_DRM_EXYNOS_DSI
 633         platform_driver_unregister(&dsi_driver);
 634 #endif
 635
 636 #ifdef CONFIG_DRM_EXYNOS_DP
 637         platform_driver_unregister(&dp_driver);
 638 #endif
 639         component_master_del(&pdev->dev, &exynos_drm_ops);
 640         return 0;
 641 }
 642
 643 static struct platform_driver exynos_drm_platform_driver = {
 644         .probe  = exynos_drm_platform_probe,
 645         .remove = exynos_drm_platform_remove,
 646         .driver = {
 647                 .owner  = THIS_MODULE,
 648                 .name   = "exynos-drm",
 649                 .pm     = &exynos_drm_pm_ops,
 650         },
 651 };
 652
 653 static int exynos_drm_init(void)
 654 {
 655         int ret;
 656
 657         exynos_drm_pdev = platform_device_register_simple("exynos-drm", -1,
 658                                                                 NULL, 0);
 659         if (IS_ERR(exynos_drm_pdev))
 660                 return PTR_ERR(exynos_drm_pdev);
 661
 662 #ifdef CONFIG_DRM_EXYNOS_VIDI
 663         ret = exynos_drm_probe_vidi();
 664         if (ret < 0)
 665                 goto err_unregister_pd;
 666 #endif
 667
 668         ret = platform_driver_register(&exynos_drm_platform_driver);
 669         if (ret)
 670                 goto err_remove_vidi;
 671
 672         return 0;
 673
 674 err_unregister_pd:
 675         platform_device_unregister(exynos_drm_pdev);
 676
 677 err_remove_vidi:
 678 #ifdef CONFIG_DRM_EXYNOS_VIDI
 679         exynos_drm_remove_vidi();
 680 #endif
 681
 682         return ret;
 683 }
 684
 685 static void exynos_drm_exit(void)
 686 {
 687 #ifdef CONFIG_DRM_EXYNOS_VIDI
 688         exynos_drm_remove_vidi();
 689 #endif
 690         platform_device_unregister(exynos_drm_pdev);
 691         platform_driver_unregister(&exynos_drm_platform_driver);
 692 }
 693
 694 module_init(exynos_drm_init);
 695 module_exit(exynos_drm_exit);
 696
 697 MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>");
 698 MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
 699 MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>");
 700 MODULE_DESCRIPTION("Samsung SoC DRM Driver");
 701 MODULE_LICENSE("GPL");