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/component.h>
  19
  20 #include <drm/exynos_drm.h>
  21
  22 #include "exynos_drm_drv.h"
  23 #include "exynos_drm_crtc.h"
  24 #include "exynos_drm_encoder.h"
  25 #include "exynos_drm_fbdev.h"
  26 #include "exynos_drm_fb.h"
  27 #include "exynos_drm_gem.h"
  28 #include "exynos_drm_plane.h"
  29 #include "exynos_drm_vidi.h"
  30 #include "exynos_drm_dmabuf.h"
  31 #include "exynos_drm_g2d.h"
  32 #include "exynos_drm_ipp.h"
  33 #include "exynos_drm_iommu.h"
  34
  35 #define DRIVER_NAME     "exynos"
  36 #define DRIVER_DESC     "Samsung SoC DRM"
  37 #define DRIVER_DATE     "20110530"
  38 #define DRIVER_MAJOR    1
  39 #define DRIVER_MINOR    0
  40
  41 static struct platform_device *exynos_drm_pdev;
  42
  43 static DEFINE_MUTEX(drm_component_lock);
  44 static LIST_HEAD(drm_component_list);
  45
  46 struct component_dev {
  47         struct list_head list;
  48         struct device *crtc_dev;
  49         struct device *conn_dev;
  50         enum exynos_drm_output_type out_type;
  51         unsigned int dev_type_flag;
  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,
  89                                           DRM_PLANE_TYPE_OVERLAY);
  90                 if (!IS_ERR(plane))
  91                         continue;
  92
  93                 ret = PTR_ERR(plane);
  94                 goto err_mode_config_cleanup;
  95         }
  96
  97         /* setup possible_clones. */
  98         exynos_drm_encoder_setup(dev);
  99
 100         platform_set_drvdata(dev->platformdev, dev);
 101
 102         /* Try to bind all sub drivers. */
 103         ret = component_bind_all(dev->dev, dev);
 104         if (ret)
 105                 goto err_mode_config_cleanup;
 106
 107         ret = drm_vblank_init(dev, dev->mode_config.num_crtc);
 108         if (ret)
 109                 goto err_unbind_all;
 110
 111         /* Probe non kms sub drivers and virtual display driver. */
 112         ret = exynos_drm_device_subdrv_probe(dev);
 113         if (ret)
 114                 goto err_cleanup_vblank;
 115
 116         /*
 117          * enable drm irq mode.
 118          * - with irq_enabled = true, we can use the vblank feature.
 119          *
 120          * P.S. note that we wouldn't use drm irq handler but
 121          *      just specific driver own one instead because
 122          *      drm framework supports only one irq handler.
 123          */
 124         dev->irq_enabled = true;
 125
 126         /*
 127          * with vblank_disable_allowed = true, vblank interrupt will be disabled
 128          * by drm timer once a current process gives up ownership of
 129          * vblank event.(after drm_vblank_put function is called)
 130          */
 131         dev->vblank_disable_allowed = true;
 132
 133         /* init kms poll for handling hpd */
 134         drm_kms_helper_poll_init(dev);
 135
 136         /* force connectors detection */
 137         drm_helper_hpd_irq_event(dev);
 138
 139         return 0;
 140
 141 err_cleanup_vblank:
 142         drm_vblank_cleanup(dev);
 143 err_unbind_all:
 144         component_unbind_all(dev->dev, dev);
 145 err_mode_config_cleanup:
 146         drm_mode_config_cleanup(dev);
 147         drm_release_iommu_mapping(dev);
 148 err_free_private:
 149         kfree(private);
 150
 151         return ret;
 152 }
 153
 154 static int exynos_drm_unload(struct drm_device *dev)
 155 {
 156         exynos_drm_device_subdrv_remove(dev);
 157
 158         exynos_drm_fbdev_fini(dev);
 159         drm_kms_helper_poll_fini(dev);
 160
 161         drm_vblank_cleanup(dev);
 162         component_unbind_all(dev->dev, dev);
 163         drm_mode_config_cleanup(dev);
 164         drm_release_iommu_mapping(dev);
 165
 166         kfree(dev->dev_private);
 167         dev->dev_private = NULL;
 168
 169         return 0;
 170 }
 171
 172 static int exynos_drm_suspend(struct drm_device *dev, pm_message_t state)
 173 {
 174         struct drm_connector *connector;
 175
 176         drm_modeset_lock_all(dev);
 177         list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
 178                 int old_dpms = connector->dpms;
 179
 180                 if (connector->funcs->dpms)
 181                         connector->funcs->dpms(connector, DRM_MODE_DPMS_OFF);
 182
 183                 /* Set the old mode back to the connector for resume */
 184                 connector->dpms = old_dpms;
 185         }
 186         drm_modeset_unlock_all(dev);
 187
 188         return 0;
 189 }
 190
 191 static int exynos_drm_resume(struct drm_device *dev)
 192 {
 193         struct drm_connector *connector;
 194
 195         drm_modeset_lock_all(dev);
 196         list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
 197                 if (connector->funcs->dpms) {
 198                         int dpms = connector->dpms;
 199
 200                         connector->dpms = DRM_MODE_DPMS_OFF;
 201                         connector->funcs->dpms(connector, dpms);
 202                 }
 203         }
 204         drm_modeset_unlock_all(dev);
 205
 206         drm_helper_resume_force_mode(dev);
 207
 208         return 0;
 209 }
 210
 211 static int exynos_drm_open(struct drm_device *dev, struct drm_file *file)
 212 {
 213         struct drm_exynos_file_private *file_priv;
 214         int ret;
 215
 216         file_priv = kzalloc(sizeof(*file_priv), GFP_KERNEL);
 217         if (!file_priv)
 218                 return -ENOMEM;
 219
 220         file->driver_priv = file_priv;
 221
 222         ret = exynos_drm_subdrv_open(dev, file);
 223         if (ret)
 224                 goto err_file_priv_free;
 225
 226         return ret;
 227
 228 err_file_priv_free:
 229         kfree(file_priv);
 230         file->driver_priv = NULL;
 231         return ret;
 232 }
 233
 234 static void exynos_drm_preclose(struct drm_device *dev,
 235                                         struct drm_file *file)
 236 {
 237         exynos_drm_subdrv_close(dev, file);
 238 }
 239
 240 static void exynos_drm_postclose(struct drm_device *dev, struct drm_file *file)
 241 {
 242         struct exynos_drm_private *private = dev->dev_private;
 243         struct drm_pending_vblank_event *v, *vt;
 244         struct drm_pending_event *e, *et;
 245         unsigned long flags;
 246
 247         if (!file->driver_priv)
 248                 return;
 249
 250         /* Release all events not unhandled by page flip handler. */
 251         spin_lock_irqsave(&dev->event_lock, flags);
 252         list_for_each_entry_safe(v, vt, &private->pageflip_event_list,
 253                         base.link) {
 254                 if (v->base.file_priv == file) {
 255                         list_del(&v->base.link);
 256                         drm_vblank_put(dev, v->pipe);
 257                         v->base.destroy(&v->base);
 258                 }
 259         }
 260
 261         /* Release all events handled by page flip handler but not freed. */
 262         list_for_each_entry_safe(e, et, &file->event_list, link) {
 263                 list_del(&e->link);
 264                 e->destroy(e);
 265         }
 266         spin_unlock_irqrestore(&dev->event_lock, flags);
 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_GET,
 287                         exynos_drm_gem_get_ioctl, DRM_UNLOCKED),
 288         DRM_IOCTL_DEF_DRV(EXYNOS_VIDI_CONNECTION,
 289                         vidi_connection_ioctl, DRM_UNLOCKED | DRM_AUTH),
 290         DRM_IOCTL_DEF_DRV(EXYNOS_G2D_GET_VER,
 291                         exynos_g2d_get_ver_ioctl, DRM_UNLOCKED | DRM_AUTH),
 292         DRM_IOCTL_DEF_DRV(EXYNOS_G2D_SET_CMDLIST,
 293                         exynos_g2d_set_cmdlist_ioctl, DRM_UNLOCKED | DRM_AUTH),
 294         DRM_IOCTL_DEF_DRV(EXYNOS_G2D_EXEC,
 295                         exynos_g2d_exec_ioctl, DRM_UNLOCKED | DRM_AUTH),
 296         DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_PROPERTY,
 297                         exynos_drm_ipp_get_property, DRM_UNLOCKED | DRM_AUTH),
 298         DRM_IOCTL_DEF_DRV(EXYNOS_IPP_SET_PROPERTY,
 299                         exynos_drm_ipp_set_property, DRM_UNLOCKED | DRM_AUTH),
 300         DRM_IOCTL_DEF_DRV(EXYNOS_IPP_QUEUE_BUF,
 301                         exynos_drm_ipp_queue_buf, DRM_UNLOCKED | DRM_AUTH),
 302         DRM_IOCTL_DEF_DRV(EXYNOS_IPP_CMD_CTRL,
 303                         exynos_drm_ipp_cmd_ctrl, DRM_UNLOCKED | DRM_AUTH),
 304 };
 305
 306 static const struct file_operations exynos_drm_driver_fops = {
 307         .owner          = THIS_MODULE,
 308         .open           = drm_open,
 309         .mmap           = exynos_drm_gem_mmap,
 310         .poll           = drm_poll,
 311         .read           = drm_read,
 312         .unlocked_ioctl = drm_ioctl,
 313 #ifdef CONFIG_COMPAT
 314         .compat_ioctl = drm_compat_ioctl,
 315 #endif
 316         .release        = drm_release,
 317 };
 318
 319 static struct drm_driver exynos_drm_driver = {
 320         .driver_features        = DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME,
 321         .load                   = exynos_drm_load,
 322         .unload                 = exynos_drm_unload,
 323         .suspend                = exynos_drm_suspend,
 324         .resume                 = exynos_drm_resume,
 325         .open                   = exynos_drm_open,
 326         .preclose               = exynos_drm_preclose,
 327         .lastclose              = exynos_drm_lastclose,
 328         .postclose              = exynos_drm_postclose,
 329         .set_busid              = drm_platform_set_busid,
 330         .get_vblank_counter     = drm_vblank_count,
 331         .enable_vblank          = exynos_drm_crtc_enable_vblank,
 332         .disable_vblank         = exynos_drm_crtc_disable_vblank,
 333         .gem_free_object        = exynos_drm_gem_free_object,
 334         .gem_vm_ops             = &exynos_drm_gem_vm_ops,
 335         .dumb_create            = exynos_drm_gem_dumb_create,
 336         .dumb_map_offset        = exynos_drm_gem_dumb_map_offset,
 337         .dumb_destroy           = drm_gem_dumb_destroy,
 338         .prime_handle_to_fd     = drm_gem_prime_handle_to_fd,
 339         .prime_fd_to_handle     = drm_gem_prime_fd_to_handle,
 340         .gem_prime_export       = exynos_dmabuf_prime_export,
 341         .gem_prime_import       = exynos_dmabuf_prime_import,
 342         .ioctls                 = exynos_ioctls,
 343         .num_ioctls             = ARRAY_SIZE(exynos_ioctls),
 344         .fops                   = &exynos_drm_driver_fops,
 345         .name   = DRIVER_NAME,
 346         .desc   = DRIVER_DESC,
 347         .date   = DRIVER_DATE,
 348         .major  = DRIVER_MAJOR,
 349         .minor  = DRIVER_MINOR,
 350 };
 351
 352 #ifdef CONFIG_PM_SLEEP
 353 static int exynos_drm_sys_suspend(struct device *dev)
 354 {
 355         struct drm_device *drm_dev = dev_get_drvdata(dev);
 356         pm_message_t message;
 357
 358         if (pm_runtime_suspended(dev) || !drm_dev)
 359                 return 0;
 360
 361         message.event = PM_EVENT_SUSPEND;
 362         return exynos_drm_suspend(drm_dev, message);
 363 }
 364
 365 static int exynos_drm_sys_resume(struct device *dev)
 366 {
 367         struct drm_device *drm_dev = dev_get_drvdata(dev);
 368
 369         if (pm_runtime_suspended(dev) || !drm_dev)
 370                 return 0;
 371
 372         return exynos_drm_resume(drm_dev);
 373 }
 374 #endif
 375
 376 static const struct dev_pm_ops exynos_drm_pm_ops = {
 377         SET_SYSTEM_SLEEP_PM_OPS(exynos_drm_sys_suspend, exynos_drm_sys_resume)
 378 };
 379
 380 int exynos_drm_component_add(struct device *dev,
 381                                 enum exynos_drm_device_type dev_type,
 382                                 enum exynos_drm_output_type out_type)
 383 {
 384         struct component_dev *cdev;
 385
 386         if (dev_type != EXYNOS_DEVICE_TYPE_CRTC &&
 387                         dev_type != EXYNOS_DEVICE_TYPE_CONNECTOR) {
 388                 DRM_ERROR("invalid device type.\n");
 389                 return -EINVAL;
 390         }
 391
 392         mutex_lock(&drm_component_lock);
 393
 394         /*
 395          * Make sure to check if there is a component which has two device
 396          * objects, for connector and for encoder/connector.
 397          * It should make sure that crtc and encoder/connector drivers are
 398          * ready before exynos drm core binds them.
 399          */
 400         list_for_each_entry(cdev, &drm_component_list, list) {
 401                 if (cdev->out_type == out_type) {
 402                         /*
 403                          * If crtc and encoder/connector device objects are
 404                          * added already just return.
 405                          */
 406                         if (cdev->dev_type_flag == (EXYNOS_DEVICE_TYPE_CRTC |
 407                                                 EXYNOS_DEVICE_TYPE_CONNECTOR)) {
 408                                 mutex_unlock(&drm_component_lock);
 409                                 return 0;
 410                         }
 411
 412                         if (dev_type == EXYNOS_DEVICE_TYPE_CRTC) {
 413                                 cdev->crtc_dev = dev;
 414                                 cdev->dev_type_flag |= dev_type;
 415                         }
 416
 417                         if (dev_type == EXYNOS_DEVICE_TYPE_CONNECTOR) {
 418                                 cdev->conn_dev = dev;
 419                                 cdev->dev_type_flag |= dev_type;
 420                         }
 421
 422                         mutex_unlock(&drm_component_lock);
 423                         return 0;
 424                 }
 425         }
 426
 427         mutex_unlock(&drm_component_lock);
 428
 429         cdev = kzalloc(sizeof(*cdev), GFP_KERNEL);
 430         if (!cdev)
 431                 return -ENOMEM;
 432
 433         if (dev_type == EXYNOS_DEVICE_TYPE_CRTC)
 434                 cdev->crtc_dev = dev;
 435         if (dev_type == EXYNOS_DEVICE_TYPE_CONNECTOR)
 436                 cdev->conn_dev = dev;
 437
 438         cdev->out_type = out_type;
 439         cdev->dev_type_flag = dev_type;
 440
 441         mutex_lock(&drm_component_lock);
 442         list_add_tail(&cdev->list, &drm_component_list);
 443         mutex_unlock(&drm_component_lock);
 444
 445         return 0;
 446 }
 447
 448 void exynos_drm_component_del(struct device *dev,
 449                                 enum exynos_drm_device_type dev_type)
 450 {
 451         struct component_dev *cdev, *next;
 452
 453         mutex_lock(&drm_component_lock);
 454
 455         list_for_each_entry_safe(cdev, next, &drm_component_list, list) {
 456                 if (dev_type == EXYNOS_DEVICE_TYPE_CRTC) {
 457                         if (cdev->crtc_dev == dev) {
 458                                 cdev->crtc_dev = NULL;
 459                                 cdev->dev_type_flag &= ~dev_type;
 460                         }
 461                 }
 462
 463                 if (dev_type == EXYNOS_DEVICE_TYPE_CONNECTOR) {
 464                         if (cdev->conn_dev == dev) {
 465                                 cdev->conn_dev = NULL;
 466                                 cdev->dev_type_flag &= ~dev_type;
 467                         }
 468                 }
 469
 470                 /*
 471                  * Release cdev object only in case that both of crtc and
 472                  * encoder/connector device objects are NULL.
 473                  */
 474                 if (!cdev->crtc_dev && !cdev->conn_dev) {
 475                         list_del(&cdev->list);
 476                         kfree(cdev);
 477                 }
 478
 479                 break;
 480         }
 481
 482         mutex_unlock(&drm_component_lock);
 483 }
 484
 485 static int compare_dev(struct device *dev, void *data)
 486 {
 487         return dev == (struct device *)data;
 488 }
 489
 490 static struct component_match *exynos_drm_match_add(struct device *dev)
 491 {
 492         struct component_match *match = NULL;
 493         struct component_dev *cdev;
 494         unsigned int attach_cnt = 0;
 495
 496         mutex_lock(&drm_component_lock);
 497
 498         /* Do not retry to probe if there is no any kms driver regitered. */
 499         if (list_empty(&drm_component_list)) {
 500                 mutex_unlock(&drm_component_lock);
 501                 return ERR_PTR(-ENODEV);
 502         }
 503
 504         list_for_each_entry(cdev, &drm_component_list, list) {
 505                 /*
 506                  * Add components to master only in case that crtc and
 507                  * encoder/connector device objects exist.
 508                  */
 509                 if (!cdev->crtc_dev || !cdev->conn_dev)
 510                         continue;
 511
 512                 attach_cnt++;
 513
 514                 mutex_unlock(&drm_component_lock);
 515
 516                 /*
 517                  * fimd and dpi modules have same device object so add
 518                  * only crtc device object in this case.
 519                  */
 520                 if (cdev->crtc_dev == cdev->conn_dev) {
 521                         component_match_add(dev, &match, compare_dev,
 522                                                 cdev->crtc_dev);
 523                         goto out_lock;
 524                 }
 525
 526                 /*
 527                  * Do not chage below call order.
 528                  * crtc device first should be added to master because
 529                  * connector/encoder need pipe number of crtc when they
 530                  * are created.
 531                  */
 532                 component_match_add(dev, &match, compare_dev, cdev->crtc_dev);
 533                 component_match_add(dev, &match, compare_dev, cdev->conn_dev);
 534
 535 out_lock:
 536                 mutex_lock(&drm_component_lock);
 537         }
 538
 539         mutex_unlock(&drm_component_lock);
 540
 541         return attach_cnt ? match : ERR_PTR(-EPROBE_DEFER);
 542 }
 543
 544 static int exynos_drm_bind(struct device *dev)
 545 {
 546         return drm_platform_init(&exynos_drm_driver, to_platform_device(dev));
 547 }
 548
 549 static void exynos_drm_unbind(struct device *dev)
 550 {
 551         drm_put_dev(dev_get_drvdata(dev));
 552 }
 553
 554 static const struct component_master_ops exynos_drm_ops = {
 555         .bind           = exynos_drm_bind,
 556         .unbind         = exynos_drm_unbind,
 557 };
 558
 559 static int exynos_drm_platform_probe(struct platform_device *pdev)
 560 {
 561         struct component_match *match;
 562         int ret;
 563
 564         pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
 565         exynos_drm_driver.num_ioctls = ARRAY_SIZE(exynos_ioctls);
 566
 567 #ifdef CONFIG_DRM_EXYNOS_FIMD
 568         ret = platform_driver_register(&fimd_driver);
 569         if (ret < 0)
 570                 return ret;
 571 #endif
 572
 573 #ifdef CONFIG_DRM_EXYNOS_DP
 574         ret = platform_driver_register(&dp_driver);
 575         if (ret < 0)
 576                 goto err_unregister_fimd_drv;
 577 #endif
 578
 579 #ifdef CONFIG_DRM_EXYNOS_DSI
 580         ret = platform_driver_register(&dsi_driver);
 581         if (ret < 0)
 582                 goto err_unregister_dp_drv;
 583 #endif
 584
 585 #ifdef CONFIG_DRM_EXYNOS_HDMI
 586         ret = platform_driver_register(&mixer_driver);
 587         if (ret < 0)
 588                 goto err_unregister_dsi_drv;
 589         ret = platform_driver_register(&hdmi_driver);
 590         if (ret < 0)
 591                 goto err_unregister_mixer_drv;
 592 #endif
 593
 594         match = exynos_drm_match_add(&pdev->dev);
 595         if (IS_ERR(match)) {
 596                 ret = PTR_ERR(match);
 597                 goto err_unregister_hdmi_drv;
 598         }
 599
 600         ret = component_master_add_with_match(&pdev->dev, &exynos_drm_ops,
 601                                                 match);
 602         if (ret < 0)
 603                 goto err_unregister_hdmi_drv;
 604
 605 #ifdef CONFIG_DRM_EXYNOS_G2D
 606         ret = platform_driver_register(&g2d_driver);
 607         if (ret < 0)
 608                 goto err_del_component_master;
 609 #endif
 610
 611 #ifdef CONFIG_DRM_EXYNOS_FIMC
 612         ret = platform_driver_register(&fimc_driver);
 613         if (ret < 0)
 614                 goto err_unregister_g2d_drv;
 615 #endif
 616
 617 #ifdef CONFIG_DRM_EXYNOS_ROTATOR
 618         ret = platform_driver_register(&rotator_driver);
 619         if (ret < 0)
 620                 goto err_unregister_fimc_drv;
 621 #endif
 622
 623 #ifdef CONFIG_DRM_EXYNOS_GSC
 624         ret = platform_driver_register(&gsc_driver);
 625         if (ret < 0)
 626                 goto err_unregister_rotator_drv;
 627 #endif
 628
 629 #ifdef CONFIG_DRM_EXYNOS_IPP
 630         ret = platform_driver_register(&ipp_driver);
 631         if (ret < 0)
 632                 goto err_unregister_gsc_drv;
 633
 634         ret = exynos_platform_device_ipp_register();
 635         if (ret < 0)
 636                 goto err_unregister_ipp_drv;
 637 #endif
 638
 639         return ret;
 640
 641 #ifdef CONFIG_DRM_EXYNOS_IPP
 642 err_unregister_ipp_drv:
 643         platform_driver_unregister(&ipp_driver);
 644 err_unregister_gsc_drv:
 645 #endif
 646
 647 #ifdef CONFIG_DRM_EXYNOS_GSC
 648         platform_driver_unregister(&gsc_driver);
 649 err_unregister_rotator_drv:
 650 #endif
 651
 652 #ifdef CONFIG_DRM_EXYNOS_ROTATOR
 653         platform_driver_unregister(&rotator_driver);
 654 err_unregister_fimc_drv:
 655 #endif
 656
 657 #ifdef CONFIG_DRM_EXYNOS_FIMC
 658         platform_driver_unregister(&fimc_driver);
 659 err_unregister_g2d_drv:
 660 #endif
 661
 662 #ifdef CONFIG_DRM_EXYNOS_G2D
 663         platform_driver_unregister(&g2d_driver);
 664 err_del_component_master:
 665 #endif
 666         component_master_del(&pdev->dev, &exynos_drm_ops);
 667
 668 err_unregister_hdmi_drv:
 669 #ifdef CONFIG_DRM_EXYNOS_HDMI
 670         platform_driver_unregister(&hdmi_driver);
 671 err_unregister_mixer_drv:
 672         platform_driver_unregister(&mixer_driver);
 673 err_unregister_dsi_drv:
 674 #endif
 675
 676 #ifdef CONFIG_DRM_EXYNOS_DSI
 677         platform_driver_unregister(&dsi_driver);
 678 err_unregister_dp_drv:
 679 #endif
 680
 681 #ifdef CONFIG_DRM_EXYNOS_DP
 682         platform_driver_unregister(&dp_driver);
 683 err_unregister_fimd_drv:
 684 #endif
 685
 686 #ifdef CONFIG_DRM_EXYNOS_FIMD
 687         platform_driver_unregister(&fimd_driver);
 688 #endif
 689         return ret;
 690 }
 691
 692 static int exynos_drm_platform_remove(struct platform_device *pdev)
 693 {
 694 #ifdef CONFIG_DRM_EXYNOS_IPP
 695         exynos_platform_device_ipp_unregister();
 696         platform_driver_unregister(&ipp_driver);
 697 #endif
 698
 699 #ifdef CONFIG_DRM_EXYNOS_GSC
 700         platform_driver_unregister(&gsc_driver);
 701 #endif
 702
 703 #ifdef CONFIG_DRM_EXYNOS_ROTATOR
 704         platform_driver_unregister(&rotator_driver);
 705 #endif
 706
 707 #ifdef CONFIG_DRM_EXYNOS_FIMC
 708         platform_driver_unregister(&fimc_driver);
 709 #endif
 710
 711 #ifdef CONFIG_DRM_EXYNOS_G2D
 712         platform_driver_unregister(&g2d_driver);
 713 #endif
 714
 715 #ifdef CONFIG_DRM_EXYNOS_HDMI
 716         platform_driver_unregister(&mixer_driver);
 717         platform_driver_unregister(&hdmi_driver);
 718 #endif
 719
 720 #ifdef CONFIG_DRM_EXYNOS_FIMD
 721         platform_driver_unregister(&fimd_driver);
 722 #endif
 723
 724 #ifdef CONFIG_DRM_EXYNOS_DSI
 725         platform_driver_unregister(&dsi_driver);
 726 #endif
 727
 728 #ifdef CONFIG_DRM_EXYNOS_DP
 729         platform_driver_unregister(&dp_driver);
 730 #endif
 731         component_master_del(&pdev->dev, &exynos_drm_ops);
 732         return 0;
 733 }
 734
 735 static struct platform_driver exynos_drm_platform_driver = {
 736         .probe  = exynos_drm_platform_probe,
 737         .remove = exynos_drm_platform_remove,
 738         .driver = {
 739                 .owner  = THIS_MODULE,
 740                 .name   = "exynos-drm",
 741                 .pm     = &exynos_drm_pm_ops,
 742         },
 743 };
 744
 745 static int exynos_drm_init(void)
 746 {
 747         int ret;
 748
 749         /*
 750          * Register device object only in case of Exynos SoC.
 751          *
 752          * Below codes resolves temporarily infinite loop issue incurred
 753          * by Exynos drm driver when using multi-platform kernel.
 754          * So these codes will be replaced with more generic way later.
 755          */
 756         if (!of_machine_is_compatible("samsung,exynos3") &&
 757                         !of_machine_is_compatible("samsung,exynos4") &&
 758                         !of_machine_is_compatible("samsung,exynos5"))
 759                 return -ENODEV;
 760
 761         exynos_drm_pdev = platform_device_register_simple("exynos-drm", -1,
 762                                                                 NULL, 0);
 763         if (IS_ERR(exynos_drm_pdev))
 764                 return PTR_ERR(exynos_drm_pdev);
 765
 766 #ifdef CONFIG_DRM_EXYNOS_VIDI
 767         ret = exynos_drm_probe_vidi();
 768         if (ret < 0)
 769                 goto err_unregister_pd;
 770 #endif
 771
 772         ret = platform_driver_register(&exynos_drm_platform_driver);
 773         if (ret)
 774                 goto err_remove_vidi;
 775
 776         return 0;
 777
 778 err_remove_vidi:
 779 #ifdef CONFIG_DRM_EXYNOS_VIDI
 780         exynos_drm_remove_vidi();
 781
 782 err_unregister_pd:
 783 #endif
 784         platform_device_unregister(exynos_drm_pdev);
 785
 786         return ret;
 787 }
 788
 789 static void exynos_drm_exit(void)
 790 {
 791         platform_driver_unregister(&exynos_drm_platform_driver);
 792 #ifdef CONFIG_DRM_EXYNOS_VIDI
 793         exynos_drm_remove_vidi();
 794 #endif
 795         platform_device_unregister(exynos_drm_pdev);
 796 }
 797
 798 module_init(exynos_drm_init);
 799 module_exit(exynos_drm_exit);
 800
 801 MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>");
 802 MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
 803 MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>");
 804 MODULE_DESCRIPTION("Samsung SoC DRM Driver");
 805 MODULE_LICENSE("GPL");