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 			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 	/*
120 	 * enable drm irq mode.
121 	 * - with irq_enabled = true, we can use the vblank feature.
122 	 *
123 	 * P.S. note that we wouldn't use drm irq handler but
124 	 *	just specific driver own one instead because
125 	 *	drm framework supports only one irq handler.
126 	 */
127 	dev->irq_enabled = true;
128 
129 	/*
130 	 * with vblank_disable_allowed = true, vblank interrupt will be disabled
131 	 * by drm timer once a current process gives up ownership of
132 	 * vblank event.(after drm_vblank_put function is called)
133 	 */
134 	dev->vblank_disable_allowed = true;
135 
136 	return 0;
137 
138 err_unbind_all:
139 	component_unbind_all(dev->dev, dev);
140 err_cleanup_vblank:
141 	drm_vblank_cleanup(dev);
142 err_mode_config_cleanup:
143 	drm_mode_config_cleanup(dev);
144 	drm_release_iommu_mapping(dev);
145 err_free_private:
146 	kfree(private);
147 
148 	return ret;
149 }
150 
151 static int exynos_drm_unload(struct drm_device *dev)
152 {
153 	exynos_drm_device_subdrv_remove(dev);
154 
155 	exynos_drm_fbdev_fini(dev);
156 	drm_kms_helper_poll_fini(dev);
157 
158 	component_unbind_all(dev->dev, dev);
159 	drm_vblank_cleanup(dev);
160 	drm_mode_config_cleanup(dev);
161 	drm_release_iommu_mapping(dev);
162 
163 	kfree(dev->dev_private);
164 	dev->dev_private = NULL;
165 
166 	return 0;
167 }
168 
169 static int exynos_drm_suspend(struct drm_device *dev, pm_message_t state)
170 {
171 	struct drm_connector *connector;
172 
173 	drm_modeset_lock_all(dev);
174 	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
175 		int old_dpms = connector->dpms;
176 
177 		if (connector->funcs->dpms)
178 			connector->funcs->dpms(connector, DRM_MODE_DPMS_OFF);
179 
180 		/* Set the old mode back to the connector for resume */
181 		connector->dpms = old_dpms;
182 	}
183 	drm_modeset_unlock_all(dev);
184 
185 	return 0;
186 }
187 
188 static int exynos_drm_resume(struct drm_device *dev)
189 {
190 	struct drm_connector *connector;
191 
192 	drm_modeset_lock_all(dev);
193 	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
194 		if (connector->funcs->dpms)
195 			connector->funcs->dpms(connector, connector->dpms);
196 	}
197 	drm_modeset_unlock_all(dev);
198 
199 	drm_helper_resume_force_mode(dev);
200 
201 	return 0;
202 }
203 
204 static int exynos_drm_open(struct drm_device *dev, struct drm_file *file)
205 {
206 	struct drm_exynos_file_private *file_priv;
207 	int ret;
208 
209 	file_priv = kzalloc(sizeof(*file_priv), GFP_KERNEL);
210 	if (!file_priv)
211 		return -ENOMEM;
212 
213 	file->driver_priv = file_priv;
214 
215 	ret = exynos_drm_subdrv_open(dev, file);
216 	if (ret)
217 		goto err_file_priv_free;
218 
219 	return ret;
220 
221 err_file_priv_free:
222 	kfree(file_priv);
223 	file->driver_priv = NULL;
224 	return ret;
225 }
226 
227 static void exynos_drm_preclose(struct drm_device *dev,
228 					struct drm_file *file)
229 {
230 	exynos_drm_subdrv_close(dev, file);
231 }
232 
233 static void exynos_drm_postclose(struct drm_device *dev, struct drm_file *file)
234 {
235 	struct exynos_drm_private *private = dev->dev_private;
236 	struct drm_pending_vblank_event *v, *vt;
237 	struct drm_pending_event *e, *et;
238 	unsigned long flags;
239 
240 	if (!file->driver_priv)
241 		return;
242 
243 	/* Release all events not unhandled by page flip handler. */
244 	spin_lock_irqsave(&dev->event_lock, flags);
245 	list_for_each_entry_safe(v, vt, &private->pageflip_event_list,
246 			base.link) {
247 		if (v->base.file_priv == file) {
248 			list_del(&v->base.link);
249 			drm_vblank_put(dev, v->pipe);
250 			v->base.destroy(&v->base);
251 		}
252 	}
253 
254 	/* Release all events handled by page flip handler but not freed. */
255 	list_for_each_entry_safe(e, et, &file->event_list, link) {
256 		list_del(&e->link);
257 		e->destroy(e);
258 	}
259 	spin_unlock_irqrestore(&dev->event_lock, flags);
260 
261 	kfree(file->driver_priv);
262 	file->driver_priv = NULL;
263 }
264 
265 static void exynos_drm_lastclose(struct drm_device *dev)
266 {
267 	exynos_drm_fbdev_restore_mode(dev);
268 }
269 
270 static const struct vm_operations_struct exynos_drm_gem_vm_ops = {
271 	.fault = exynos_drm_gem_fault,
272 	.open = drm_gem_vm_open,
273 	.close = drm_gem_vm_close,
274 };
275 
276 static const struct drm_ioctl_desc exynos_ioctls[] = {
277 	DRM_IOCTL_DEF_DRV(EXYNOS_GEM_CREATE, exynos_drm_gem_create_ioctl,
278 			DRM_UNLOCKED | DRM_AUTH),
279 	DRM_IOCTL_DEF_DRV(EXYNOS_GEM_GET,
280 			exynos_drm_gem_get_ioctl, DRM_UNLOCKED),
281 	DRM_IOCTL_DEF_DRV(EXYNOS_VIDI_CONNECTION,
282 			vidi_connection_ioctl, DRM_UNLOCKED | DRM_AUTH),
283 	DRM_IOCTL_DEF_DRV(EXYNOS_G2D_GET_VER,
284 			exynos_g2d_get_ver_ioctl, DRM_UNLOCKED | DRM_AUTH),
285 	DRM_IOCTL_DEF_DRV(EXYNOS_G2D_SET_CMDLIST,
286 			exynos_g2d_set_cmdlist_ioctl, DRM_UNLOCKED | DRM_AUTH),
287 	DRM_IOCTL_DEF_DRV(EXYNOS_G2D_EXEC,
288 			exynos_g2d_exec_ioctl, DRM_UNLOCKED | DRM_AUTH),
289 	DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_PROPERTY,
290 			exynos_drm_ipp_get_property, DRM_UNLOCKED | DRM_AUTH),
291 	DRM_IOCTL_DEF_DRV(EXYNOS_IPP_SET_PROPERTY,
292 			exynos_drm_ipp_set_property, DRM_UNLOCKED | DRM_AUTH),
293 	DRM_IOCTL_DEF_DRV(EXYNOS_IPP_QUEUE_BUF,
294 			exynos_drm_ipp_queue_buf, DRM_UNLOCKED | DRM_AUTH),
295 	DRM_IOCTL_DEF_DRV(EXYNOS_IPP_CMD_CTRL,
296 			exynos_drm_ipp_cmd_ctrl, DRM_UNLOCKED | DRM_AUTH),
297 };
298 
299 static const struct file_operations exynos_drm_driver_fops = {
300 	.owner		= THIS_MODULE,
301 	.open		= drm_open,
302 	.mmap		= exynos_drm_gem_mmap,
303 	.poll		= drm_poll,
304 	.read		= drm_read,
305 	.unlocked_ioctl	= drm_ioctl,
306 #ifdef CONFIG_COMPAT
307 	.compat_ioctl = drm_compat_ioctl,
308 #endif
309 	.release	= drm_release,
310 };
311 
312 static struct drm_driver exynos_drm_driver = {
313 	.driver_features	= DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME,
314 	.load			= exynos_drm_load,
315 	.unload			= exynos_drm_unload,
316 	.suspend		= exynos_drm_suspend,
317 	.resume			= exynos_drm_resume,
318 	.open			= exynos_drm_open,
319 	.preclose		= exynos_drm_preclose,
320 	.lastclose		= exynos_drm_lastclose,
321 	.postclose		= exynos_drm_postclose,
322 	.set_busid		= drm_platform_set_busid,
323 	.get_vblank_counter	= drm_vblank_count,
324 	.enable_vblank		= exynos_drm_crtc_enable_vblank,
325 	.disable_vblank		= exynos_drm_crtc_disable_vblank,
326 	.gem_free_object	= exynos_drm_gem_free_object,
327 	.gem_vm_ops		= &exynos_drm_gem_vm_ops,
328 	.dumb_create		= exynos_drm_gem_dumb_create,
329 	.dumb_map_offset	= exynos_drm_gem_dumb_map_offset,
330 	.dumb_destroy		= drm_gem_dumb_destroy,
331 	.prime_handle_to_fd	= drm_gem_prime_handle_to_fd,
332 	.prime_fd_to_handle	= drm_gem_prime_fd_to_handle,
333 	.gem_prime_export	= exynos_dmabuf_prime_export,
334 	.gem_prime_import	= exynos_dmabuf_prime_import,
335 	.ioctls			= exynos_ioctls,
336 	.num_ioctls		= ARRAY_SIZE(exynos_ioctls),
337 	.fops			= &exynos_drm_driver_fops,
338 	.name	= DRIVER_NAME,
339 	.desc	= DRIVER_DESC,
340 	.date	= DRIVER_DATE,
341 	.major	= DRIVER_MAJOR,
342 	.minor	= DRIVER_MINOR,
343 };
344 
345 #ifdef CONFIG_PM_SLEEP
346 static int exynos_drm_sys_suspend(struct device *dev)
347 {
348 	struct drm_device *drm_dev = dev_get_drvdata(dev);
349 	pm_message_t message;
350 
351 	if (pm_runtime_suspended(dev) || !drm_dev)
352 		return 0;
353 
354 	message.event = PM_EVENT_SUSPEND;
355 	return exynos_drm_suspend(drm_dev, message);
356 }
357 
358 static int exynos_drm_sys_resume(struct device *dev)
359 {
360 	struct drm_device *drm_dev = dev_get_drvdata(dev);
361 
362 	if (pm_runtime_suspended(dev) || !drm_dev)
363 		return 0;
364 
365 	return exynos_drm_resume(drm_dev);
366 }
367 #endif
368 
369 static const struct dev_pm_ops exynos_drm_pm_ops = {
370 	SET_SYSTEM_SLEEP_PM_OPS(exynos_drm_sys_suspend, exynos_drm_sys_resume)
371 };
372 
373 int exynos_drm_component_add(struct device *dev,
374 				enum exynos_drm_device_type dev_type,
375 				enum exynos_drm_output_type out_type)
376 {
377 	struct component_dev *cdev;
378 
379 	if (dev_type != EXYNOS_DEVICE_TYPE_CRTC &&
380 			dev_type != EXYNOS_DEVICE_TYPE_CONNECTOR) {
381 		DRM_ERROR("invalid device type.\n");
382 		return -EINVAL;
383 	}
384 
385 	mutex_lock(&drm_component_lock);
386 
387 	/*
388 	 * Make sure to check if there is a component which has two device
389 	 * objects, for connector and for encoder/connector.
390 	 * It should make sure that crtc and encoder/connector drivers are
391 	 * ready before exynos drm core binds them.
392 	 */
393 	list_for_each_entry(cdev, &drm_component_list, list) {
394 		if (cdev->out_type == out_type) {
395 			/*
396 			 * If crtc and encoder/connector device objects are
397 			 * added already just return.
398 			 */
399 			if (cdev->dev_type_flag == (EXYNOS_DEVICE_TYPE_CRTC |
400 						EXYNOS_DEVICE_TYPE_CONNECTOR)) {
401 				mutex_unlock(&drm_component_lock);
402 				return 0;
403 			}
404 
405 			if (dev_type == EXYNOS_DEVICE_TYPE_CRTC) {
406 				cdev->crtc_dev = dev;
407 				cdev->dev_type_flag |= dev_type;
408 			}
409 
410 			if (dev_type == EXYNOS_DEVICE_TYPE_CONNECTOR) {
411 				cdev->conn_dev = dev;
412 				cdev->dev_type_flag |= dev_type;
413 			}
414 
415 			mutex_unlock(&drm_component_lock);
416 			return 0;
417 		}
418 	}
419 
420 	mutex_unlock(&drm_component_lock);
421 
422 	cdev = kzalloc(sizeof(*cdev), GFP_KERNEL);
423 	if (!cdev)
424 		return -ENOMEM;
425 
426 	if (dev_type == EXYNOS_DEVICE_TYPE_CRTC)
427 		cdev->crtc_dev = dev;
428 	if (dev_type == EXYNOS_DEVICE_TYPE_CONNECTOR)
429 		cdev->conn_dev = dev;
430 
431 	cdev->out_type = out_type;
432 	cdev->dev_type_flag = dev_type;
433 
434 	mutex_lock(&drm_component_lock);
435 	list_add_tail(&cdev->list, &drm_component_list);
436 	mutex_unlock(&drm_component_lock);
437 
438 	return 0;
439 }
440 
441 void exynos_drm_component_del(struct device *dev,
442 				enum exynos_drm_device_type dev_type)
443 {
444 	struct component_dev *cdev, *next;
445 
446 	mutex_lock(&drm_component_lock);
447 
448 	list_for_each_entry_safe(cdev, next, &drm_component_list, list) {
449 		if (dev_type == EXYNOS_DEVICE_TYPE_CRTC) {
450 			if (cdev->crtc_dev == dev) {
451 				cdev->crtc_dev = NULL;
452 				cdev->dev_type_flag &= ~dev_type;
453 			}
454 		}
455 
456 		if (dev_type == EXYNOS_DEVICE_TYPE_CONNECTOR) {
457 			if (cdev->conn_dev == dev) {
458 				cdev->conn_dev = NULL;
459 				cdev->dev_type_flag &= ~dev_type;
460 			}
461 		}
462 
463 		/*
464 		 * Release cdev object only in case that both of crtc and
465 		 * encoder/connector device objects are NULL.
466 		 */
467 		if (!cdev->crtc_dev && !cdev->conn_dev) {
468 			list_del(&cdev->list);
469 			kfree(cdev);
470 		}
471 
472 		break;
473 	}
474 
475 	mutex_unlock(&drm_component_lock);
476 }
477 
478 static int compare_dev(struct device *dev, void *data)
479 {
480 	return dev == (struct device *)data;
481 }
482 
483 static struct component_match *exynos_drm_match_add(struct device *dev)
484 {
485 	struct component_match *match = NULL;
486 	struct component_dev *cdev;
487 	unsigned int attach_cnt = 0;
488 
489 	mutex_lock(&drm_component_lock);
490 
491 	list_for_each_entry(cdev, &drm_component_list, list) {
492 		/*
493 		 * Add components to master only in case that crtc and
494 		 * encoder/connector device objects exist.
495 		 */
496 		if (!cdev->crtc_dev || !cdev->conn_dev)
497 			continue;
498 
499 		attach_cnt++;
500 
501 		mutex_unlock(&drm_component_lock);
502 
503 		/*
504 		 * fimd and dpi modules have same device object so add
505 		 * only crtc device object in this case.
506 		 */
507 		if (cdev->crtc_dev == cdev->conn_dev) {
508 			component_match_add(dev, &match, compare_dev,
509 						cdev->crtc_dev);
510 			goto out_lock;
511 		}
512 
513 		/*
514 		 * Do not chage below call order.
515 		 * crtc device first should be added to master because
516 		 * connector/encoder need pipe number of crtc when they
517 		 * are created.
518 		 */
519 		component_match_add(dev, &match, compare_dev, cdev->crtc_dev);
520 		component_match_add(dev, &match, compare_dev, cdev->conn_dev);
521 
522 out_lock:
523 		mutex_lock(&drm_component_lock);
524 	}
525 
526 	mutex_unlock(&drm_component_lock);
527 
528 	return attach_cnt ? match : ERR_PTR(-EPROBE_DEFER);
529 }
530 
531 static int exynos_drm_bind(struct device *dev)
532 {
533 	return drm_platform_init(&exynos_drm_driver, to_platform_device(dev));
534 }
535 
536 static void exynos_drm_unbind(struct device *dev)
537 {
538 	drm_put_dev(dev_get_drvdata(dev));
539 }
540 
541 static const struct component_master_ops exynos_drm_ops = {
542 	.bind		= exynos_drm_bind,
543 	.unbind		= exynos_drm_unbind,
544 };
545 
546 static int exynos_drm_platform_probe(struct platform_device *pdev)
547 {
548 	struct component_match *match;
549 	int ret;
550 
551 	pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
552 	exynos_drm_driver.num_ioctls = ARRAY_SIZE(exynos_ioctls);
553 
554 #ifdef CONFIG_DRM_EXYNOS_FIMD
555 	ret = platform_driver_register(&fimd_driver);
556 	if (ret < 0)
557 		return ret;
558 #endif
559 
560 #ifdef CONFIG_DRM_EXYNOS_DP
561 	ret = platform_driver_register(&dp_driver);
562 	if (ret < 0)
563 		goto err_unregister_fimd_drv;
564 #endif
565 
566 #ifdef CONFIG_DRM_EXYNOS_DSI
567 	ret = platform_driver_register(&dsi_driver);
568 	if (ret < 0)
569 		goto err_unregister_dp_drv;
570 #endif
571 
572 #ifdef CONFIG_DRM_EXYNOS_HDMI
573 	ret = platform_driver_register(&mixer_driver);
574 	if (ret < 0)
575 		goto err_unregister_dsi_drv;
576 	ret = platform_driver_register(&hdmi_driver);
577 	if (ret < 0)
578 		goto err_unregister_mixer_drv;
579 #endif
580 
581 #ifdef CONFIG_DRM_EXYNOS_G2D
582 	ret = platform_driver_register(&g2d_driver);
583 	if (ret < 0)
584 		goto err_unregister_hdmi_drv;
585 #endif
586 
587 #ifdef CONFIG_DRM_EXYNOS_FIMC
588 	ret = platform_driver_register(&fimc_driver);
589 	if (ret < 0)
590 		goto err_unregister_g2d_drv;
591 #endif
592 
593 #ifdef CONFIG_DRM_EXYNOS_ROTATOR
594 	ret = platform_driver_register(&rotator_driver);
595 	if (ret < 0)
596 		goto err_unregister_fimc_drv;
597 #endif
598 
599 #ifdef CONFIG_DRM_EXYNOS_GSC
600 	ret = platform_driver_register(&gsc_driver);
601 	if (ret < 0)
602 		goto err_unregister_rotator_drv;
603 #endif
604 
605 #ifdef CONFIG_DRM_EXYNOS_IPP
606 	ret = platform_driver_register(&ipp_driver);
607 	if (ret < 0)
608 		goto err_unregister_gsc_drv;
609 
610 	ret = exynos_platform_device_ipp_register();
611 	if (ret < 0)
612 		goto err_unregister_ipp_drv;
613 #endif
614 
615 	match = exynos_drm_match_add(&pdev->dev);
616 	if (IS_ERR(match)) {
617 		ret = PTR_ERR(match);
618 		goto err_unregister_resources;
619 	}
620 
621 	ret = component_master_add_with_match(&pdev->dev, &exynos_drm_ops,
622 						match);
623 	if (ret < 0)
624 		goto err_unregister_resources;
625 
626 	return ret;
627 
628 err_unregister_resources:
629 
630 #ifdef CONFIG_DRM_EXYNOS_IPP
631 	exynos_platform_device_ipp_unregister();
632 err_unregister_ipp_drv:
633 	platform_driver_unregister(&ipp_driver);
634 err_unregister_gsc_drv:
635 #endif
636 
637 #ifdef CONFIG_DRM_EXYNOS_GSC
638 	platform_driver_unregister(&gsc_driver);
639 err_unregister_rotator_drv:
640 #endif
641 
642 #ifdef CONFIG_DRM_EXYNOS_ROTATOR
643 	platform_driver_unregister(&rotator_driver);
644 err_unregister_fimc_drv:
645 #endif
646 
647 #ifdef CONFIG_DRM_EXYNOS_FIMC
648 	platform_driver_unregister(&fimc_driver);
649 err_unregister_g2d_drv:
650 #endif
651 
652 #ifdef CONFIG_DRM_EXYNOS_G2D
653 	platform_driver_unregister(&g2d_driver);
654 err_unregister_hdmi_drv:
655 #endif
656 
657 #ifdef CONFIG_DRM_EXYNOS_HDMI
658 	platform_driver_unregister(&hdmi_driver);
659 err_unregister_mixer_drv:
660 	platform_driver_unregister(&mixer_driver);
661 err_unregister_dsi_drv:
662 #endif
663 
664 #ifdef CONFIG_DRM_EXYNOS_DSI
665 	platform_driver_unregister(&dsi_driver);
666 err_unregister_dp_drv:
667 #endif
668 
669 #ifdef CONFIG_DRM_EXYNOS_DP
670 	platform_driver_unregister(&dp_driver);
671 err_unregister_fimd_drv:
672 #endif
673 
674 #ifdef CONFIG_DRM_EXYNOS_FIMD
675 	platform_driver_unregister(&fimd_driver);
676 #endif
677 	return ret;
678 }
679 
680 static int exynos_drm_platform_remove(struct platform_device *pdev)
681 {
682 #ifdef CONFIG_DRM_EXYNOS_IPP
683 	exynos_platform_device_ipp_unregister();
684 	platform_driver_unregister(&ipp_driver);
685 #endif
686 
687 #ifdef CONFIG_DRM_EXYNOS_GSC
688 	platform_driver_unregister(&gsc_driver);
689 #endif
690 
691 #ifdef CONFIG_DRM_EXYNOS_ROTATOR
692 	platform_driver_unregister(&rotator_driver);
693 #endif
694 
695 #ifdef CONFIG_DRM_EXYNOS_FIMC
696 	platform_driver_unregister(&fimc_driver);
697 #endif
698 
699 #ifdef CONFIG_DRM_EXYNOS_G2D
700 	platform_driver_unregister(&g2d_driver);
701 #endif
702 
703 #ifdef CONFIG_DRM_EXYNOS_HDMI
704 	platform_driver_unregister(&mixer_driver);
705 	platform_driver_unregister(&hdmi_driver);
706 #endif
707 
708 #ifdef CONFIG_DRM_EXYNOS_FIMD
709 	platform_driver_unregister(&fimd_driver);
710 #endif
711 
712 #ifdef CONFIG_DRM_EXYNOS_DSI
713 	platform_driver_unregister(&dsi_driver);
714 #endif
715 
716 #ifdef CONFIG_DRM_EXYNOS_DP
717 	platform_driver_unregister(&dp_driver);
718 #endif
719 	component_master_del(&pdev->dev, &exynos_drm_ops);
720 	return 0;
721 }
722 
723 static struct platform_driver exynos_drm_platform_driver = {
724 	.probe	= exynos_drm_platform_probe,
725 	.remove	= exynos_drm_platform_remove,
726 	.driver	= {
727 		.owner	= THIS_MODULE,
728 		.name	= "exynos-drm",
729 		.pm	= &exynos_drm_pm_ops,
730 	},
731 };
732 
733 static int exynos_drm_init(void)
734 {
735 	int ret;
736 
737 	exynos_drm_pdev = platform_device_register_simple("exynos-drm", -1,
738 								NULL, 0);
739 	if (IS_ERR(exynos_drm_pdev))
740 		return PTR_ERR(exynos_drm_pdev);
741 
742 #ifdef CONFIG_DRM_EXYNOS_VIDI
743 	ret = exynos_drm_probe_vidi();
744 	if (ret < 0)
745 		goto err_unregister_pd;
746 #endif
747 
748 	ret = platform_driver_register(&exynos_drm_platform_driver);
749 	if (ret)
750 		goto err_remove_vidi;
751 
752 	return 0;
753 
754 err_remove_vidi:
755 #ifdef CONFIG_DRM_EXYNOS_VIDI
756 	exynos_drm_remove_vidi();
757 
758 err_unregister_pd:
759 #endif
760 	platform_device_unregister(exynos_drm_pdev);
761 
762 	return ret;
763 }
764 
765 static void exynos_drm_exit(void)
766 {
767 	platform_driver_unregister(&exynos_drm_platform_driver);
768 #ifdef CONFIG_DRM_EXYNOS_VIDI
769 	exynos_drm_remove_vidi();
770 #endif
771 	platform_device_unregister(exynos_drm_pdev);
772 }
773 
774 module_init(exynos_drm_init);
775 module_exit(exynos_drm_exit);
776 
777 MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>");
778 MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
779 MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>");
780 MODULE_DESCRIPTION("Samsung SoC DRM Driver");
781 MODULE_LICENSE("GPL");
782