Version:  2.0.40 2.2.26 2.4.37 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16 3.17 3.18

Linux/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");
806 

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