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 static struct platform_device *exynos_drm_pdev;
43 
44 static DEFINE_MUTEX(drm_component_lock);
45 static LIST_HEAD(drm_component_list);
46 
47 struct component_dev {
48 	struct list_head list;
49 	struct device *crtc_dev;
50 	struct device *conn_dev;
51 	enum exynos_drm_output_type out_type;
52 	unsigned int dev_type_flag;
53 };
54 
55 static int exynos_drm_load(struct drm_device *dev, unsigned long flags)
56 {
57 	struct exynos_drm_private *private;
58 	int ret;
59 	int nr;
60 
61 	private = kzalloc(sizeof(struct exynos_drm_private), GFP_KERNEL);
62 	if (!private)
63 		return -ENOMEM;
64 
65 	INIT_LIST_HEAD(&private->pageflip_event_list);
66 	dev_set_drvdata(dev->dev, dev);
67 	dev->dev_private = (void *)private;
68 
69 	/*
70 	 * create mapping to manage iommu table and set a pointer to iommu
71 	 * mapping structure to iommu_mapping of private data.
72 	 * also this iommu_mapping can be used to check if iommu is supported
73 	 * or not.
74 	 */
75 	ret = drm_create_iommu_mapping(dev);
76 	if (ret < 0) {
77 		DRM_ERROR("failed to create iommu mapping.\n");
78 		goto err_free_private;
79 	}
80 
81 	drm_mode_config_init(dev);
82 
83 	exynos_drm_mode_config_init(dev);
84 
85 	for (nr = 0; nr < MAX_PLANE; nr++) {
86 		struct drm_plane *plane;
87 		unsigned long possible_crtcs = (1 << MAX_CRTC) - 1;
88 
89 		plane = exynos_plane_init(dev, possible_crtcs, false);
90 		if (!plane)
91 			goto err_mode_config_cleanup;
92 	}
93 
94 	/* init kms poll for handling hpd */
95 	drm_kms_helper_poll_init(dev);
96 
97 	ret = drm_vblank_init(dev, MAX_CRTC);
98 	if (ret)
99 		goto err_mode_config_cleanup;
100 
101 	/* setup possible_clones. */
102 	exynos_drm_encoder_setup(dev);
103 
104 	platform_set_drvdata(dev->platformdev, dev);
105 
106 	/* Try to bind all sub drivers. */
107 	ret = component_bind_all(dev->dev, dev);
108 	if (ret)
109 		goto err_cleanup_vblank;
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_unbind_all;
115 
116 	/* force connectors detection */
117 	drm_helper_hpd_irq_event(dev);
118 
119 	return 0;
120 
121 err_unbind_all:
122 	component_unbind_all(dev->dev, dev);
123 err_cleanup_vblank:
124 	drm_vblank_cleanup(dev);
125 err_mode_config_cleanup:
126 	drm_mode_config_cleanup(dev);
127 	drm_release_iommu_mapping(dev);
128 err_free_private:
129 	kfree(private);
130 
131 	return ret;
132 }
133 
134 static int exynos_drm_unload(struct drm_device *dev)
135 {
136 	exynos_drm_device_subdrv_remove(dev);
137 
138 	exynos_drm_fbdev_fini(dev);
139 	drm_vblank_cleanup(dev);
140 	drm_kms_helper_poll_fini(dev);
141 	drm_mode_config_cleanup(dev);
142 
143 	drm_release_iommu_mapping(dev);
144 	kfree(dev->dev_private);
145 
146 	component_unbind_all(dev->dev, dev);
147 	dev->dev_private = NULL;
148 
149 	return 0;
150 }
151 
152 static const struct file_operations exynos_drm_gem_fops = {
153 	.mmap = exynos_drm_gem_mmap_buffer,
154 };
155 
156 static int exynos_drm_suspend(struct drm_device *dev, pm_message_t state)
157 {
158 	struct drm_connector *connector;
159 
160 	drm_modeset_lock_all(dev);
161 	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
162 		int old_dpms = connector->dpms;
163 
164 		if (connector->funcs->dpms)
165 			connector->funcs->dpms(connector, DRM_MODE_DPMS_OFF);
166 
167 		/* Set the old mode back to the connector for resume */
168 		connector->dpms = old_dpms;
169 	}
170 	drm_modeset_unlock_all(dev);
171 
172 	return 0;
173 }
174 
175 static int exynos_drm_resume(struct drm_device *dev)
176 {
177 	struct drm_connector *connector;
178 
179 	drm_modeset_lock_all(dev);
180 	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
181 		if (connector->funcs->dpms)
182 			connector->funcs->dpms(connector, connector->dpms);
183 	}
184 	drm_modeset_unlock_all(dev);
185 
186 	drm_helper_resume_force_mode(dev);
187 
188 	return 0;
189 }
190 
191 static int exynos_drm_open(struct drm_device *dev, struct drm_file *file)
192 {
193 	struct drm_exynos_file_private *file_priv;
194 	struct file *anon_filp;
195 	int ret;
196 
197 	file_priv = kzalloc(sizeof(*file_priv), GFP_KERNEL);
198 	if (!file_priv)
199 		return -ENOMEM;
200 
201 	file->driver_priv = file_priv;
202 
203 	ret = exynos_drm_subdrv_open(dev, file);
204 	if (ret)
205 		goto err_file_priv_free;
206 
207 	anon_filp = anon_inode_getfile("exynos_gem", &exynos_drm_gem_fops,
208 					NULL, 0);
209 	if (IS_ERR(anon_filp)) {
210 		ret = PTR_ERR(anon_filp);
211 		goto err_subdrv_close;
212 	}
213 
214 	anon_filp->f_mode = FMODE_READ | FMODE_WRITE;
215 	file_priv->anon_filp = anon_filp;
216 
217 	return ret;
218 
219 err_subdrv_close:
220 	exynos_drm_subdrv_close(dev, file);
221 
222 err_file_priv_free:
223 	kfree(file_priv);
224 	file->driver_priv = NULL;
225 	return ret;
226 }
227 
228 static void exynos_drm_preclose(struct drm_device *dev,
229 					struct drm_file *file)
230 {
231 	exynos_drm_subdrv_close(dev, file);
232 }
233 
234 static void exynos_drm_postclose(struct drm_device *dev, struct drm_file *file)
235 {
236 	struct exynos_drm_private *private = dev->dev_private;
237 	struct drm_exynos_file_private *file_priv;
238 	struct drm_pending_vblank_event *v, *vt;
239 	struct drm_pending_event *e, *et;
240 	unsigned long flags;
241 
242 	if (!file->driver_priv)
243 		return;
244 
245 	/* Release all events not unhandled by page flip handler. */
246 	spin_lock_irqsave(&dev->event_lock, flags);
247 	list_for_each_entry_safe(v, vt, &private->pageflip_event_list,
248 			base.link) {
249 		if (v->base.file_priv == file) {
250 			list_del(&v->base.link);
251 			drm_vblank_put(dev, v->pipe);
252 			v->base.destroy(&v->base);
253 		}
254 	}
255 
256 	/* Release all events handled by page flip handler but not freed. */
257 	list_for_each_entry_safe(e, et, &file->event_list, link) {
258 		list_del(&e->link);
259 		e->destroy(e);
260 	}
261 	spin_unlock_irqrestore(&dev->event_lock, flags);
262 
263 	file_priv = file->driver_priv;
264 	if (file_priv->anon_filp)
265 		fput(file_priv->anon_filp);
266 
267 	kfree(file->driver_priv);
268 	file->driver_priv = NULL;
269 }
270 
271 static void exynos_drm_lastclose(struct drm_device *dev)
272 {
273 	exynos_drm_fbdev_restore_mode(dev);
274 }
275 
276 static const struct vm_operations_struct exynos_drm_gem_vm_ops = {
277 	.fault = exynos_drm_gem_fault,
278 	.open = drm_gem_vm_open,
279 	.close = drm_gem_vm_close,
280 };
281 
282 static const struct drm_ioctl_desc exynos_ioctls[] = {
283 	DRM_IOCTL_DEF_DRV(EXYNOS_GEM_CREATE, exynos_drm_gem_create_ioctl,
284 			DRM_UNLOCKED | DRM_AUTH),
285 	DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MAP_OFFSET,
286 			exynos_drm_gem_map_offset_ioctl, DRM_UNLOCKED |
287 			DRM_AUTH),
288 	DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MMAP,
289 			exynos_drm_gem_mmap_ioctl, DRM_UNLOCKED | DRM_AUTH),
290 	DRM_IOCTL_DEF_DRV(EXYNOS_GEM_GET,
291 			exynos_drm_gem_get_ioctl, DRM_UNLOCKED),
292 	DRM_IOCTL_DEF_DRV(EXYNOS_VIDI_CONNECTION,
293 			vidi_connection_ioctl, DRM_UNLOCKED | DRM_AUTH),
294 	DRM_IOCTL_DEF_DRV(EXYNOS_G2D_GET_VER,
295 			exynos_g2d_get_ver_ioctl, DRM_UNLOCKED | DRM_AUTH),
296 	DRM_IOCTL_DEF_DRV(EXYNOS_G2D_SET_CMDLIST,
297 			exynos_g2d_set_cmdlist_ioctl, DRM_UNLOCKED | DRM_AUTH),
298 	DRM_IOCTL_DEF_DRV(EXYNOS_G2D_EXEC,
299 			exynos_g2d_exec_ioctl, DRM_UNLOCKED | DRM_AUTH),
300 	DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_PROPERTY,
301 			exynos_drm_ipp_get_property, DRM_UNLOCKED | DRM_AUTH),
302 	DRM_IOCTL_DEF_DRV(EXYNOS_IPP_SET_PROPERTY,
303 			exynos_drm_ipp_set_property, DRM_UNLOCKED | DRM_AUTH),
304 	DRM_IOCTL_DEF_DRV(EXYNOS_IPP_QUEUE_BUF,
305 			exynos_drm_ipp_queue_buf, DRM_UNLOCKED | DRM_AUTH),
306 	DRM_IOCTL_DEF_DRV(EXYNOS_IPP_CMD_CTRL,
307 			exynos_drm_ipp_cmd_ctrl, DRM_UNLOCKED | DRM_AUTH),
308 };
309 
310 static const struct file_operations exynos_drm_driver_fops = {
311 	.owner		= THIS_MODULE,
312 	.open		= drm_open,
313 	.mmap		= exynos_drm_gem_mmap,
314 	.poll		= drm_poll,
315 	.read		= drm_read,
316 	.unlocked_ioctl	= drm_ioctl,
317 #ifdef CONFIG_COMPAT
318 	.compat_ioctl = drm_compat_ioctl,
319 #endif
320 	.release	= drm_release,
321 };
322 
323 static struct drm_driver exynos_drm_driver = {
324 	.driver_features	= DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME,
325 	.load			= exynos_drm_load,
326 	.unload			= exynos_drm_unload,
327 	.suspend		= exynos_drm_suspend,
328 	.resume			= exynos_drm_resume,
329 	.open			= exynos_drm_open,
330 	.preclose		= exynos_drm_preclose,
331 	.lastclose		= exynos_drm_lastclose,
332 	.postclose		= exynos_drm_postclose,
333 	.get_vblank_counter	= drm_vblank_count,
334 	.enable_vblank		= exynos_drm_crtc_enable_vblank,
335 	.disable_vblank		= exynos_drm_crtc_disable_vblank,
336 	.gem_free_object	= exynos_drm_gem_free_object,
337 	.gem_vm_ops		= &exynos_drm_gem_vm_ops,
338 	.dumb_create		= exynos_drm_gem_dumb_create,
339 	.dumb_map_offset	= exynos_drm_gem_dumb_map_offset,
340 	.dumb_destroy		= drm_gem_dumb_destroy,
341 	.prime_handle_to_fd	= drm_gem_prime_handle_to_fd,
342 	.prime_fd_to_handle	= drm_gem_prime_fd_to_handle,
343 	.gem_prime_export	= exynos_dmabuf_prime_export,
344 	.gem_prime_import	= exynos_dmabuf_prime_import,
345 	.ioctls			= exynos_ioctls,
346 	.num_ioctls		= ARRAY_SIZE(exynos_ioctls),
347 	.fops			= &exynos_drm_driver_fops,
348 	.name	= DRIVER_NAME,
349 	.desc	= DRIVER_DESC,
350 	.date	= DRIVER_DATE,
351 	.major	= DRIVER_MAJOR,
352 	.minor	= DRIVER_MINOR,
353 };
354 
355 #ifdef CONFIG_PM_SLEEP
356 static int exynos_drm_sys_suspend(struct device *dev)
357 {
358 	struct drm_device *drm_dev = dev_get_drvdata(dev);
359 	pm_message_t message;
360 
361 	if (pm_runtime_suspended(dev) || !drm_dev)
362 		return 0;
363 
364 	message.event = PM_EVENT_SUSPEND;
365 	return exynos_drm_suspend(drm_dev, message);
366 }
367 
368 static int exynos_drm_sys_resume(struct device *dev)
369 {
370 	struct drm_device *drm_dev = dev_get_drvdata(dev);
371 
372 	if (pm_runtime_suspended(dev) || !drm_dev)
373 		return 0;
374 
375 	return exynos_drm_resume(drm_dev);
376 }
377 #endif
378 
379 static const struct dev_pm_ops exynos_drm_pm_ops = {
380 	SET_SYSTEM_SLEEP_PM_OPS(exynos_drm_sys_suspend, exynos_drm_sys_resume)
381 };
382 
383 int exynos_drm_component_add(struct device *dev,
384 				enum exynos_drm_device_type dev_type,
385 				enum exynos_drm_output_type out_type)
386 {
387 	struct component_dev *cdev;
388 
389 	if (dev_type != EXYNOS_DEVICE_TYPE_CRTC &&
390 			dev_type != EXYNOS_DEVICE_TYPE_CONNECTOR) {
391 		DRM_ERROR("invalid device type.\n");
392 		return -EINVAL;
393 	}
394 
395 	mutex_lock(&drm_component_lock);
396 
397 	/*
398 	 * Make sure to check if there is a component which has two device
399 	 * objects, for connector and for encoder/connector.
400 	 * It should make sure that crtc and encoder/connector drivers are
401 	 * ready before exynos drm core binds them.
402 	 */
403 	list_for_each_entry(cdev, &drm_component_list, list) {
404 		if (cdev->out_type == out_type) {
405 			/*
406 			 * If crtc and encoder/connector device objects are
407 			 * added already just return.
408 			 */
409 			if (cdev->dev_type_flag == (EXYNOS_DEVICE_TYPE_CRTC |
410 						EXYNOS_DEVICE_TYPE_CONNECTOR)) {
411 				mutex_unlock(&drm_component_lock);
412 				return 0;
413 			}
414 
415 			if (dev_type == EXYNOS_DEVICE_TYPE_CRTC) {
416 				cdev->crtc_dev = dev;
417 				cdev->dev_type_flag |= dev_type;
418 			}
419 
420 			if (dev_type == EXYNOS_DEVICE_TYPE_CONNECTOR) {
421 				cdev->conn_dev = dev;
422 				cdev->dev_type_flag |= dev_type;
423 			}
424 
425 			mutex_unlock(&drm_component_lock);
426 			return 0;
427 		}
428 	}
429 
430 	mutex_unlock(&drm_component_lock);
431 
432 	cdev = kzalloc(sizeof(*cdev), GFP_KERNEL);
433 	if (!cdev)
434 		return -ENOMEM;
435 
436 	if (dev_type == EXYNOS_DEVICE_TYPE_CRTC)
437 		cdev->crtc_dev = dev;
438 	if (dev_type == EXYNOS_DEVICE_TYPE_CONNECTOR)
439 		cdev->conn_dev = dev;
440 
441 	cdev->out_type = out_type;
442 	cdev->dev_type_flag = dev_type;
443 
444 	mutex_lock(&drm_component_lock);
445 	list_add_tail(&cdev->list, &drm_component_list);
446 	mutex_unlock(&drm_component_lock);
447 
448 	return 0;
449 }
450 
451 void exynos_drm_component_del(struct device *dev,
452 				enum exynos_drm_device_type dev_type)
453 {
454 	struct component_dev *cdev, *next;
455 
456 	mutex_lock(&drm_component_lock);
457 
458 	list_for_each_entry_safe(cdev, next, &drm_component_list, list) {
459 		if (dev_type == EXYNOS_DEVICE_TYPE_CRTC) {
460 			if (cdev->crtc_dev == dev) {
461 				cdev->crtc_dev = NULL;
462 				cdev->dev_type_flag &= ~dev_type;
463 			}
464 		}
465 
466 		if (dev_type == EXYNOS_DEVICE_TYPE_CONNECTOR) {
467 			if (cdev->conn_dev == dev) {
468 				cdev->conn_dev = NULL;
469 				cdev->dev_type_flag &= ~dev_type;
470 			}
471 		}
472 
473 		/*
474 		 * Release cdev object only in case that both of crtc and
475 		 * encoder/connector device objects are NULL.
476 		 */
477 		if (!cdev->crtc_dev && !cdev->conn_dev) {
478 			list_del(&cdev->list);
479 			kfree(cdev);
480 		}
481 
482 		break;
483 	}
484 
485 	mutex_unlock(&drm_component_lock);
486 }
487 
488 static int compare_of(struct device *dev, void *data)
489 {
490 	return dev == (struct device *)data;
491 }
492 
493 static int exynos_drm_add_components(struct device *dev, struct master *m)
494 {
495 	struct component_dev *cdev;
496 	unsigned int attach_cnt = 0;
497 
498 	mutex_lock(&drm_component_lock);
499 
500 	list_for_each_entry(cdev, &drm_component_list, list) {
501 		int ret;
502 
503 		/*
504 		 * Add components to master only in case that crtc and
505 		 * encoder/connector device objects exist.
506 		 */
507 		if (!cdev->crtc_dev || !cdev->conn_dev)
508 			continue;
509 
510 		attach_cnt++;
511 
512 		mutex_unlock(&drm_component_lock);
513 
514 		/*
515 		 * fimd and dpi modules have same device object so add
516 		 * only crtc device object in this case.
517 		 *
518 		 * TODO. if dpi module follows driver-model driver then
519 		 * below codes can be removed.
520 		 */
521 		if (cdev->crtc_dev == cdev->conn_dev) {
522 			ret = component_master_add_child(m, compare_of,
523 					cdev->crtc_dev);
524 			if (ret < 0)
525 				return ret;
526 
527 			goto out_lock;
528 		}
529 
530 		/*
531 		 * Do not chage below call order.
532 		 * crtc device first should be added to master because
533 		 * connector/encoder need pipe number of crtc when they
534 		 * are created.
535 		 */
536 		ret = component_master_add_child(m, compare_of, cdev->crtc_dev);
537 		ret |= component_master_add_child(m, compare_of,
538 							cdev->conn_dev);
539 		if (ret < 0)
540 			return ret;
541 
542 out_lock:
543 		mutex_lock(&drm_component_lock);
544 	}
545 
546 	mutex_unlock(&drm_component_lock);
547 
548 	return attach_cnt ? 0 : -ENODEV;
549 }
550 
551 static int exynos_drm_bind(struct device *dev)
552 {
553 	return drm_platform_init(&exynos_drm_driver, to_platform_device(dev));
554 }
555 
556 static void exynos_drm_unbind(struct device *dev)
557 {
558 	drm_put_dev(dev_get_drvdata(dev));
559 }
560 
561 static const struct component_master_ops exynos_drm_ops = {
562 	.add_components = exynos_drm_add_components,
563 	.bind		= exynos_drm_bind,
564 	.unbind		= exynos_drm_unbind,
565 };
566 
567 static int exynos_drm_platform_probe(struct platform_device *pdev)
568 {
569 	int ret;
570 
571 	pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
572 	exynos_drm_driver.num_ioctls = ARRAY_SIZE(exynos_ioctls);
573 
574 #ifdef CONFIG_DRM_EXYNOS_FIMD
575 	ret = platform_driver_register(&fimd_driver);
576 	if (ret < 0)
577 		return ret;
578 #endif
579 
580 #ifdef CONFIG_DRM_EXYNOS_DP
581 	ret = platform_driver_register(&dp_driver);
582 	if (ret < 0)
583 		goto err_unregister_fimd_drv;
584 #endif
585 
586 #ifdef CONFIG_DRM_EXYNOS_DSI
587 	ret = platform_driver_register(&dsi_driver);
588 	if (ret < 0)
589 		goto err_unregister_dp_drv;
590 #endif
591 
592 #ifdef CONFIG_DRM_EXYNOS_HDMI
593 	ret = platform_driver_register(&mixer_driver);
594 	if (ret < 0)
595 		goto err_unregister_dsi_drv;
596 	ret = platform_driver_register(&hdmi_driver);
597 	if (ret < 0)
598 		goto err_unregister_mixer_drv;
599 #endif
600 
601 #ifdef CONFIG_DRM_EXYNOS_G2D
602 	ret = platform_driver_register(&g2d_driver);
603 	if (ret < 0)
604 		goto err_unregister_hdmi_drv;
605 #endif
606 
607 #ifdef CONFIG_DRM_EXYNOS_FIMC
608 	ret = platform_driver_register(&fimc_driver);
609 	if (ret < 0)
610 		goto err_unregister_g2d_drv;
611 #endif
612 
613 #ifdef CONFIG_DRM_EXYNOS_ROTATOR
614 	ret = platform_driver_register(&rotator_driver);
615 	if (ret < 0)
616 		goto err_unregister_fimc_drv;
617 #endif
618 
619 #ifdef CONFIG_DRM_EXYNOS_GSC
620 	ret = platform_driver_register(&gsc_driver);
621 	if (ret < 0)
622 		goto err_unregister_rotator_drv;
623 #endif
624 
625 #ifdef CONFIG_DRM_EXYNOS_IPP
626 	ret = platform_driver_register(&ipp_driver);
627 	if (ret < 0)
628 		goto err_unregister_gsc_drv;
629 
630 	ret = exynos_platform_device_ipp_register();
631 	if (ret < 0)
632 		goto err_unregister_ipp_drv;
633 #endif
634 
635 	ret = component_master_add(&pdev->dev, &exynos_drm_ops);
636 	if (ret < 0)
637 		DRM_DEBUG_KMS("re-tried by last sub driver probed later.\n");
638 
639 	return 0;
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_unregister_hdmi_drv:
665 #endif
666 
667 #ifdef CONFIG_DRM_EXYNOS_HDMI
668 	platform_driver_unregister(&hdmi_driver);
669 err_unregister_mixer_drv:
670 	platform_driver_unregister(&mixer_driver);
671 err_unregister_dsi_drv:
672 #endif
673 
674 #ifdef CONFIG_DRM_EXYNOS_DSI
675 	platform_driver_unregister(&dsi_driver);
676 err_unregister_dp_drv:
677 #endif
678 
679 #ifdef CONFIG_DRM_EXYNOS_DP
680 	platform_driver_unregister(&dp_driver);
681 err_unregister_fimd_drv:
682 #endif
683 
684 #ifdef CONFIG_DRM_EXYNOS_FIMD
685 	platform_driver_unregister(&fimd_driver);
686 #endif
687 	return ret;
688 }
689 
690 static int exynos_drm_platform_remove(struct platform_device *pdev)
691 {
692 #ifdef CONFIG_DRM_EXYNOS_IPP
693 	exynos_platform_device_ipp_unregister();
694 	platform_driver_unregister(&ipp_driver);
695 #endif
696 
697 #ifdef CONFIG_DRM_EXYNOS_GSC
698 	platform_driver_unregister(&gsc_driver);
699 #endif
700 
701 #ifdef CONFIG_DRM_EXYNOS_ROTATOR
702 	platform_driver_unregister(&rotator_driver);
703 #endif
704 
705 #ifdef CONFIG_DRM_EXYNOS_FIMC
706 	platform_driver_unregister(&fimc_driver);
707 #endif
708 
709 #ifdef CONFIG_DRM_EXYNOS_G2D
710 	platform_driver_unregister(&g2d_driver);
711 #endif
712 
713 #ifdef CONFIG_DRM_EXYNOS_HDMI
714 	platform_driver_unregister(&mixer_driver);
715 	platform_driver_unregister(&hdmi_driver);
716 #endif
717 
718 #ifdef CONFIG_DRM_EXYNOS_FIMD
719 	platform_driver_unregister(&fimd_driver);
720 #endif
721 
722 #ifdef CONFIG_DRM_EXYNOS_DSI
723 	platform_driver_unregister(&dsi_driver);
724 #endif
725 
726 #ifdef CONFIG_DRM_EXYNOS_DP
727 	platform_driver_unregister(&dp_driver);
728 #endif
729 	component_master_del(&pdev->dev, &exynos_drm_ops);
730 	return 0;
731 }
732 
733 static struct platform_driver exynos_drm_platform_driver = {
734 	.probe	= exynos_drm_platform_probe,
735 	.remove	= exynos_drm_platform_remove,
736 	.driver	= {
737 		.owner	= THIS_MODULE,
738 		.name	= "exynos-drm",
739 		.pm	= &exynos_drm_pm_ops,
740 	},
741 };
742 
743 static int exynos_drm_init(void)
744 {
745 	int ret;
746 
747 	exynos_drm_pdev = platform_device_register_simple("exynos-drm", -1,
748 								NULL, 0);
749 	if (IS_ERR(exynos_drm_pdev))
750 		return PTR_ERR(exynos_drm_pdev);
751 
752 #ifdef CONFIG_DRM_EXYNOS_VIDI
753 	ret = exynos_drm_probe_vidi();
754 	if (ret < 0)
755 		goto err_unregister_pd;
756 #endif
757 
758 	ret = platform_driver_register(&exynos_drm_platform_driver);
759 	if (ret)
760 		goto err_remove_vidi;
761 
762 	return 0;
763 
764 err_remove_vidi:
765 #ifdef CONFIG_DRM_EXYNOS_VIDI
766 	exynos_drm_remove_vidi();
767 
768 err_unregister_pd:
769 #endif
770 	platform_device_unregister(exynos_drm_pdev);
771 
772 	return ret;
773 }
774 
775 static void exynos_drm_exit(void)
776 {
777 	platform_driver_unregister(&exynos_drm_platform_driver);
778 #ifdef CONFIG_DRM_EXYNOS_VIDI
779 	exynos_drm_remove_vidi();
780 #endif
781 	platform_device_unregister(exynos_drm_pdev);
782 }
783 
784 module_init(exynos_drm_init);
785 module_exit(exynos_drm_exit);
786 
787 MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>");
788 MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
789 MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>");
790 MODULE_DESCRIPTION("Samsung SoC DRM Driver");
791 MODULE_LICENSE("GPL");
792