1 /*
2  * Copyright (c) 2011 Samsung Electronics Co., Ltd.
3  * Authors:
4  *	Inki Dae <inki.dae@samsung.com>
5  *	Joonyoung Shim <jy0922.shim@samsung.com>
6  *	Seung-Woo Kim <sw0312.kim@samsung.com>
7  *
8  * This program is free software; you can redistribute  it and/or modify it
9  * under  the terms of  the GNU General  Public License as published by the
10  * Free Software Foundation;  either version 2 of the  License, or (at your
11  * option) any later version.
12  */
13 
14 #include <linux/pm_runtime.h>
15 #include <drm/drmP.h>
16 #include <drm/drm_crtc_helper.h>
17 
18 #include <linux/anon_inodes.h>
19 #include <linux/component.h>
20 
21 #include <drm/exynos_drm.h>
22 
23 #include "exynos_drm_drv.h"
24 #include "exynos_drm_crtc.h"
25 #include "exynos_drm_encoder.h"
26 #include "exynos_drm_fbdev.h"
27 #include "exynos_drm_fb.h"
28 #include "exynos_drm_gem.h"
29 #include "exynos_drm_plane.h"
30 #include "exynos_drm_vidi.h"
31 #include "exynos_drm_dmabuf.h"
32 #include "exynos_drm_g2d.h"
33 #include "exynos_drm_ipp.h"
34 #include "exynos_drm_iommu.h"
35 
36 #define DRIVER_NAME	"exynos"
37 #define DRIVER_DESC	"Samsung SoC DRM"
38 #define DRIVER_DATE	"20110530"
39 #define DRIVER_MAJOR	1
40 #define DRIVER_MINOR	0
41 
42 #define VBLANK_OFF_DELAY	50000
43 
44 static struct platform_device *exynos_drm_pdev;
45 
46 static DEFINE_MUTEX(drm_component_lock);
47 static LIST_HEAD(drm_component_list);
48 
49 struct component_dev {
50 	struct list_head list;
51 	struct device *crtc_dev;
52 	struct device *conn_dev;
53 	enum exynos_drm_output_type out_type;
54 	unsigned int dev_type_flag;
55 };
56 
57 static int exynos_drm_load(struct drm_device *dev, unsigned long flags)
58 {
59 	struct exynos_drm_private *private;
60 	int ret;
61 	int nr;
62 
63 	private = kzalloc(sizeof(struct exynos_drm_private), GFP_KERNEL);
64 	if (!private)
65 		return -ENOMEM;
66 
67 	INIT_LIST_HEAD(&private->pageflip_event_list);
68 	dev_set_drvdata(dev->dev, dev);
69 	dev->dev_private = (void *)private;
70 
71 	/*
72 	 * create mapping to manage iommu table and set a pointer to iommu
73 	 * mapping structure to iommu_mapping of private data.
74 	 * also this iommu_mapping can be used to check if iommu is supported
75 	 * or not.
76 	 */
77 	ret = drm_create_iommu_mapping(dev);
78 	if (ret < 0) {
79 		DRM_ERROR("failed to create iommu mapping.\n");
80 		goto err_free_private;
81 	}
82 
83 	drm_mode_config_init(dev);
84 
85 	exynos_drm_mode_config_init(dev);
86 
87 	for (nr = 0; nr < MAX_PLANE; nr++) {
88 		struct drm_plane *plane;
89 		unsigned long possible_crtcs = (1 << MAX_CRTC) - 1;
90 
91 		plane = exynos_plane_init(dev, possible_crtcs, false);
92 		if (!plane)
93 			goto err_mode_config_cleanup;
94 	}
95 
96 	/* init kms poll for handling hpd */
97 	drm_kms_helper_poll_init(dev);
98 
99 	ret = drm_vblank_init(dev, MAX_CRTC);
100 	if (ret)
101 		goto err_mode_config_cleanup;
102 
103 	/* setup possible_clones. */
104 	exynos_drm_encoder_setup(dev);
105 
106 	drm_vblank_offdelay = VBLANK_OFF_DELAY;
107 
108 	platform_set_drvdata(dev->platformdev, dev);
109 
110 	/* Try to bind all sub drivers. */
111 	ret = component_bind_all(dev->dev, dev);
112 	if (ret)
113 		goto err_cleanup_vblank;
114 
115 	/* Probe non kms sub drivers and virtual display driver. */
116 	ret = exynos_drm_device_subdrv_probe(dev);
117 	if (ret)
118 		goto err_unbind_all;
119 
120 	/* force connectors detection */
121 	drm_helper_hpd_irq_event(dev);
122 
123 	return 0;
124 
125 err_unbind_all:
126 	component_unbind_all(dev->dev, dev);
127 err_cleanup_vblank:
128 	drm_vblank_cleanup(dev);
129 err_mode_config_cleanup:
130 	drm_mode_config_cleanup(dev);
131 	drm_release_iommu_mapping(dev);
132 err_free_private:
133 	kfree(private);
134 
135 	return ret;
136 }
137 
138 static int exynos_drm_unload(struct drm_device *dev)
139 {
140 	exynos_drm_device_subdrv_remove(dev);
141 
142 	exynos_drm_fbdev_fini(dev);
143 	drm_vblank_cleanup(dev);
144 	drm_kms_helper_poll_fini(dev);
145 	drm_mode_config_cleanup(dev);
146 
147 	drm_release_iommu_mapping(dev);
148 	kfree(dev->dev_private);
149 
150 	component_unbind_all(dev->dev, dev);
151 	dev->dev_private = NULL;
152 
153 	return 0;
154 }
155 
156 static const struct file_operations exynos_drm_gem_fops = {
157 	.mmap = exynos_drm_gem_mmap_buffer,
158 };
159 
160 static int exynos_drm_suspend(struct drm_device *dev, pm_message_t state)
161 {
162 	struct drm_connector *connector;
163 
164 	drm_modeset_lock_all(dev);
165 	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
166 		int old_dpms = connector->dpms;
167 
168 		if (connector->funcs->dpms)
169 			connector->funcs->dpms(connector, DRM_MODE_DPMS_OFF);
170 
171 		/* Set the old mode back to the connector for resume */
172 		connector->dpms = old_dpms;
173 	}
174 	drm_modeset_unlock_all(dev);
175 
176 	return 0;
177 }
178 
179 static int exynos_drm_resume(struct drm_device *dev)
180 {
181 	struct drm_connector *connector;
182 
183 	drm_modeset_lock_all(dev);
184 	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
185 		if (connector->funcs->dpms)
186 			connector->funcs->dpms(connector, connector->dpms);
187 	}
188 	drm_modeset_unlock_all(dev);
189 
190 	drm_helper_resume_force_mode(dev);
191 
192 	return 0;
193 }
194 
195 static int exynos_drm_open(struct drm_device *dev, struct drm_file *file)
196 {
197 	struct drm_exynos_file_private *file_priv;
198 	struct file *anon_filp;
199 	int ret;
200 
201 	file_priv = kzalloc(sizeof(*file_priv), GFP_KERNEL);
202 	if (!file_priv)
203 		return -ENOMEM;
204 
205 	file->driver_priv = file_priv;
206 
207 	ret = exynos_drm_subdrv_open(dev, file);
208 	if (ret)
209 		goto err_file_priv_free;
210 
211 	anon_filp = anon_inode_getfile("exynos_gem", &exynos_drm_gem_fops,
212 					NULL, 0);
213 	if (IS_ERR(anon_filp)) {
214 		ret = PTR_ERR(anon_filp);
215 		goto err_subdrv_close;
216 	}
217 
218 	anon_filp->f_mode = FMODE_READ | FMODE_WRITE;
219 	file_priv->anon_filp = anon_filp;
220 
221 	return ret;
222 
223 err_subdrv_close:
224 	exynos_drm_subdrv_close(dev, file);
225 
226 err_file_priv_free:
227 	kfree(file_priv);
228 	file->driver_priv = NULL;
229 	return ret;
230 }
231 
232 static void exynos_drm_preclose(struct drm_device *dev,
233 					struct drm_file *file)
234 {
235 	exynos_drm_subdrv_close(dev, file);
236 }
237 
238 static void exynos_drm_postclose(struct drm_device *dev, struct drm_file *file)
239 {
240 	struct exynos_drm_private *private = dev->dev_private;
241 	struct drm_exynos_file_private *file_priv;
242 	struct drm_pending_vblank_event *v, *vt;
243 	struct drm_pending_event *e, *et;
244 	unsigned long flags;
245 
246 	if (!file->driver_priv)
247 		return;
248 
249 	/* Release all events not unhandled by page flip handler. */
250 	spin_lock_irqsave(&dev->event_lock, flags);
251 	list_for_each_entry_safe(v, vt, &private->pageflip_event_list,
252 			base.link) {
253 		if (v->base.file_priv == file) {
254 			list_del(&v->base.link);
255 			drm_vblank_put(dev, v->pipe);
256 			v->base.destroy(&v->base);
257 		}
258 	}
259 
260 	/* Release all events handled by page flip handler but not freed. */
261 	list_for_each_entry_safe(e, et, &file->event_list, link) {
262 		list_del(&e->link);
263 		e->destroy(e);
264 	}
265 	spin_unlock_irqrestore(&dev->event_lock, flags);
266 
267 	file_priv = file->driver_priv;
268 	if (file_priv->anon_filp)
269 		fput(file_priv->anon_filp);
270 
271 	kfree(file->driver_priv);
272 	file->driver_priv = NULL;
273 }
274 
275 static void exynos_drm_lastclose(struct drm_device *dev)
276 {
277 	exynos_drm_fbdev_restore_mode(dev);
278 }
279 
280 static const struct vm_operations_struct exynos_drm_gem_vm_ops = {
281 	.fault = exynos_drm_gem_fault,
282 	.open = drm_gem_vm_open,
283 	.close = drm_gem_vm_close,
284 };
285 
286 static const struct drm_ioctl_desc exynos_ioctls[] = {
287 	DRM_IOCTL_DEF_DRV(EXYNOS_GEM_CREATE, exynos_drm_gem_create_ioctl,
288 			DRM_UNLOCKED | DRM_AUTH),
289 	DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MAP_OFFSET,
290 			exynos_drm_gem_map_offset_ioctl, DRM_UNLOCKED |
291 			DRM_AUTH),
292 	DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MMAP,
293 			exynos_drm_gem_mmap_ioctl, DRM_UNLOCKED | DRM_AUTH),
294 	DRM_IOCTL_DEF_DRV(EXYNOS_GEM_GET,
295 			exynos_drm_gem_get_ioctl, DRM_UNLOCKED),
296 	DRM_IOCTL_DEF_DRV(EXYNOS_VIDI_CONNECTION,
297 			vidi_connection_ioctl, DRM_UNLOCKED | DRM_AUTH),
298 	DRM_IOCTL_DEF_DRV(EXYNOS_G2D_GET_VER,
299 			exynos_g2d_get_ver_ioctl, DRM_UNLOCKED | DRM_AUTH),
300 	DRM_IOCTL_DEF_DRV(EXYNOS_G2D_SET_CMDLIST,
301 			exynos_g2d_set_cmdlist_ioctl, DRM_UNLOCKED | DRM_AUTH),
302 	DRM_IOCTL_DEF_DRV(EXYNOS_G2D_EXEC,
303 			exynos_g2d_exec_ioctl, DRM_UNLOCKED | DRM_AUTH),
304 	DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_PROPERTY,
305 			exynos_drm_ipp_get_property, DRM_UNLOCKED | DRM_AUTH),
306 	DRM_IOCTL_DEF_DRV(EXYNOS_IPP_SET_PROPERTY,
307 			exynos_drm_ipp_set_property, DRM_UNLOCKED | DRM_AUTH),
308 	DRM_IOCTL_DEF_DRV(EXYNOS_IPP_QUEUE_BUF,
309 			exynos_drm_ipp_queue_buf, DRM_UNLOCKED | DRM_AUTH),
310 	DRM_IOCTL_DEF_DRV(EXYNOS_IPP_CMD_CTRL,
311 			exynos_drm_ipp_cmd_ctrl, DRM_UNLOCKED | DRM_AUTH),
312 };
313 
314 static const struct file_operations exynos_drm_driver_fops = {
315 	.owner		= THIS_MODULE,
316 	.open		= drm_open,
317 	.mmap		= exynos_drm_gem_mmap,
318 	.poll		= drm_poll,
319 	.read		= drm_read,
320 	.unlocked_ioctl	= drm_ioctl,
321 #ifdef CONFIG_COMPAT
322 	.compat_ioctl = drm_compat_ioctl,
323 #endif
324 	.release	= drm_release,
325 };
326 
327 static struct drm_driver exynos_drm_driver = {
328 	.driver_features	= DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME,
329 	.load			= exynos_drm_load,
330 	.unload			= exynos_drm_unload,
331 	.suspend		= exynos_drm_suspend,
332 	.resume			= exynos_drm_resume,
333 	.open			= exynos_drm_open,
334 	.preclose		= exynos_drm_preclose,
335 	.lastclose		= exynos_drm_lastclose,
336 	.postclose		= exynos_drm_postclose,
337 	.get_vblank_counter	= drm_vblank_count,
338 	.enable_vblank		= exynos_drm_crtc_enable_vblank,
339 	.disable_vblank		= exynos_drm_crtc_disable_vblank,
340 	.gem_free_object	= exynos_drm_gem_free_object,
341 	.gem_vm_ops		= &exynos_drm_gem_vm_ops,
342 	.dumb_create		= exynos_drm_gem_dumb_create,
343 	.dumb_map_offset	= exynos_drm_gem_dumb_map_offset,
344 	.dumb_destroy		= drm_gem_dumb_destroy,
345 	.prime_handle_to_fd	= drm_gem_prime_handle_to_fd,
346 	.prime_fd_to_handle	= drm_gem_prime_fd_to_handle,
347 	.gem_prime_export	= exynos_dmabuf_prime_export,
348 	.gem_prime_import	= exynos_dmabuf_prime_import,
349 	.ioctls			= exynos_ioctls,
350 	.num_ioctls		= ARRAY_SIZE(exynos_ioctls),
351 	.fops			= &exynos_drm_driver_fops,
352 	.name	= DRIVER_NAME,
353 	.desc	= DRIVER_DESC,
354 	.date	= DRIVER_DATE,
355 	.major	= DRIVER_MAJOR,
356 	.minor	= DRIVER_MINOR,
357 };
358 
359 #ifdef CONFIG_PM_SLEEP
360 static int exynos_drm_sys_suspend(struct device *dev)
361 {
362 	struct drm_device *drm_dev = dev_get_drvdata(dev);
363 	pm_message_t message;
364 
365 	if (pm_runtime_suspended(dev))
366 		return 0;
367 
368 	message.event = PM_EVENT_SUSPEND;
369 	return exynos_drm_suspend(drm_dev, message);
370 }
371 
372 static int exynos_drm_sys_resume(struct device *dev)
373 {
374 	struct drm_device *drm_dev = dev_get_drvdata(dev);
375 
376 	if (pm_runtime_suspended(dev))
377 		return 0;
378 
379 	return exynos_drm_resume(drm_dev);
380 }
381 #endif
382 
383 static const struct dev_pm_ops exynos_drm_pm_ops = {
384 	SET_SYSTEM_SLEEP_PM_OPS(exynos_drm_sys_suspend, exynos_drm_sys_resume)
385 };
386 
387 int exynos_drm_component_add(struct device *dev,
388 				enum exynos_drm_device_type dev_type,
389 				enum exynos_drm_output_type out_type)
390 {
391 	struct component_dev *cdev;
392 
393 	if (dev_type != EXYNOS_DEVICE_TYPE_CRTC &&
394 			dev_type != EXYNOS_DEVICE_TYPE_CONNECTOR) {
395 		DRM_ERROR("invalid device type.\n");
396 		return -EINVAL;
397 	}
398 
399 	mutex_lock(&drm_component_lock);
400 
401 	/*
402 	 * Make sure to check if there is a component which has two device
403 	 * objects, for connector and for encoder/connector.
404 	 * It should make sure that crtc and encoder/connector drivers are
405 	 * ready before exynos drm core binds them.
406 	 */
407 	list_for_each_entry(cdev, &drm_component_list, list) {
408 		if (cdev->out_type == out_type) {
409 			/*
410 			 * If crtc and encoder/connector device objects are
411 			 * added already just return.
412 			 */
413 			if (cdev->dev_type_flag == (EXYNOS_DEVICE_TYPE_CRTC |
414 						EXYNOS_DEVICE_TYPE_CONNECTOR)) {
415 				mutex_unlock(&drm_component_lock);
416 				return 0;
417 			}
418 
419 			if (dev_type == EXYNOS_DEVICE_TYPE_CRTC) {
420 				cdev->crtc_dev = dev;
421 				cdev->dev_type_flag |= dev_type;
422 			}
423 
424 			if (dev_type == EXYNOS_DEVICE_TYPE_CONNECTOR) {
425 				cdev->conn_dev = dev;
426 				cdev->dev_type_flag |= dev_type;
427 			}
428 
429 			mutex_unlock(&drm_component_lock);
430 			return 0;
431 		}
432 	}
433 
434 	mutex_unlock(&drm_component_lock);
435 
436 	cdev = kzalloc(sizeof(*cdev), GFP_KERNEL);
437 	if (!cdev)
438 		return -ENOMEM;
439 
440 	if (dev_type == EXYNOS_DEVICE_TYPE_CRTC)
441 		cdev->crtc_dev = dev;
442 	if (dev_type == EXYNOS_DEVICE_TYPE_CONNECTOR)
443 		cdev->conn_dev = dev;
444 
445 	cdev->out_type = out_type;
446 	cdev->dev_type_flag = dev_type;
447 
448 	mutex_lock(&drm_component_lock);
449 	list_add_tail(&cdev->list, &drm_component_list);
450 	mutex_unlock(&drm_component_lock);
451 
452 	return 0;
453 }
454 
455 void exynos_drm_component_del(struct device *dev,
456 				enum exynos_drm_device_type dev_type)
457 {
458 	struct component_dev *cdev, *next;
459 
460 	mutex_lock(&drm_component_lock);
461 
462 	list_for_each_entry_safe(cdev, next, &drm_component_list, list) {
463 		if (dev_type == EXYNOS_DEVICE_TYPE_CRTC) {
464 			if (cdev->crtc_dev == dev) {
465 				cdev->crtc_dev = NULL;
466 				cdev->dev_type_flag &= ~dev_type;
467 			}
468 		}
469 
470 		if (dev_type == EXYNOS_DEVICE_TYPE_CONNECTOR) {
471 			if (cdev->conn_dev == dev) {
472 				cdev->conn_dev = NULL;
473 				cdev->dev_type_flag &= ~dev_type;
474 			}
475 		}
476 
477 		/*
478 		 * Release cdev object only in case that both of crtc and
479 		 * encoder/connector device objects are NULL.
480 		 */
481 		if (!cdev->crtc_dev && !cdev->conn_dev) {
482 			list_del(&cdev->list);
483 			kfree(cdev);
484 		}
485 
486 		break;
487 	}
488 
489 	mutex_unlock(&drm_component_lock);
490 }
491 
492 static int compare_of(struct device *dev, void *data)
493 {
494 	return dev == (struct device *)data;
495 }
496 
497 static int exynos_drm_add_components(struct device *dev, struct master *m)
498 {
499 	struct component_dev *cdev;
500 	unsigned int attach_cnt = 0;
501 
502 	mutex_lock(&drm_component_lock);
503 
504 	list_for_each_entry(cdev, &drm_component_list, list) {
505 		int ret;
506 
507 		/*
508 		 * Add components to master only in case that crtc and
509 		 * encoder/connector device objects exist.
510 		 */
511 		if (!cdev->crtc_dev || !cdev->conn_dev)
512 			continue;
513 
514 		attach_cnt++;
515 
516 		mutex_unlock(&drm_component_lock);
517 
518 		/*
519 		 * fimd and dpi modules have same device object so add
520 		 * only crtc device object in this case.
521 		 *
522 		 * TODO. if dpi module follows driver-model driver then
523 		 * below codes can be removed.
524 		 */
525 		if (cdev->crtc_dev == cdev->conn_dev) {
526 			ret = component_master_add_child(m, compare_of,
527 					cdev->crtc_dev);
528 			if (ret < 0)
529 				return ret;
530 
531 			goto out_lock;
532 		}
533 
534 		/*
535 		 * Do not chage below call order.
536 		 * crtc device first should be added to master because
537 		 * connector/encoder need pipe number of crtc when they
538 		 * are created.
539 		 */
540 		ret = component_master_add_child(m, compare_of, cdev->crtc_dev);
541 		ret |= component_master_add_child(m, compare_of,
542 							cdev->conn_dev);
543 		if (ret < 0)
544 			return ret;
545 
546 out_lock:
547 		mutex_lock(&drm_component_lock);
548 	}
549 
550 	mutex_unlock(&drm_component_lock);
551 
552 	return attach_cnt ? 0 : -ENODEV;
553 }
554 
555 static int exynos_drm_bind(struct device *dev)
556 {
557 	return drm_platform_init(&exynos_drm_driver, to_platform_device(dev));
558 }
559 
560 static void exynos_drm_unbind(struct device *dev)
561 {
562 	drm_put_dev(dev_get_drvdata(dev));
563 }
564 
565 static const struct component_master_ops exynos_drm_ops = {
566 	.add_components = exynos_drm_add_components,
567 	.bind		= exynos_drm_bind,
568 	.unbind		= exynos_drm_unbind,
569 };
570 
571 static int exynos_drm_platform_probe(struct platform_device *pdev)
572 {
573 	int ret;
574 
575 	pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
576 	exynos_drm_driver.num_ioctls = ARRAY_SIZE(exynos_ioctls);
577 
578 #ifdef CONFIG_DRM_EXYNOS_FIMD
579 	ret = platform_driver_register(&fimd_driver);
580 	if (ret < 0)
581 		return ret;
582 #endif
583 
584 #ifdef CONFIG_DRM_EXYNOS_DP
585 	ret = platform_driver_register(&dp_driver);
586 	if (ret < 0)
587 		goto err_unregister_fimd_drv;
588 #endif
589 
590 #ifdef CONFIG_DRM_EXYNOS_DSI
591 	ret = platform_driver_register(&dsi_driver);
592 	if (ret < 0)
593 		goto err_unregister_dp_drv;
594 #endif
595 
596 #ifdef CONFIG_DRM_EXYNOS_HDMI
597 	ret = platform_driver_register(&mixer_driver);
598 	if (ret < 0)
599 		goto err_unregister_dsi_drv;
600 	ret = platform_driver_register(&hdmi_driver);
601 	if (ret < 0)
602 		goto err_unregister_mixer_drv;
603 #endif
604 
605 #ifdef CONFIG_DRM_EXYNOS_G2D
606 	ret = platform_driver_register(&g2d_driver);
607 	if (ret < 0)
608 		goto err_unregister_hdmi_drv;
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 	ret = component_master_add(&pdev->dev, &exynos_drm_ops);
640 	if (ret < 0)
641 		DRM_DEBUG_KMS("re-tried by last sub driver probed later.\n");
642 
643 	return 0;
644 
645 #ifdef CONFIG_DRM_EXYNOS_IPP
646 err_unregister_ipp_drv:
647 	platform_driver_unregister(&ipp_driver);
648 err_unregister_gsc_drv:
649 #endif
650 
651 #ifdef CONFIG_DRM_EXYNOS_GSC
652 	platform_driver_unregister(&gsc_driver);
653 err_unregister_rotator_drv:
654 #endif
655 
656 #ifdef CONFIG_DRM_EXYNOS_ROTATOR
657 	platform_driver_unregister(&rotator_driver);
658 err_unregister_fimc_drv:
659 #endif
660 
661 #ifdef CONFIG_DRM_EXYNOS_FIMC
662 	platform_driver_unregister(&fimc_driver);
663 err_unregister_g2d_drv:
664 #endif
665 
666 #ifdef CONFIG_DRM_EXYNOS_G2D
667 	platform_driver_unregister(&g2d_driver);
668 err_unregister_hdmi_drv:
669 #endif
670 
671 #ifdef CONFIG_DRM_EXYNOS_HDMI
672 	platform_driver_unregister(&hdmi_driver);
673 err_unregister_mixer_drv:
674 	platform_driver_unregister(&mixer_driver);
675 err_unregister_dsi_drv:
676 #endif
677 
678 #ifdef CONFIG_DRM_EXYNOS_DSI
679 	platform_driver_unregister(&dsi_driver);
680 err_unregister_dp_drv:
681 #endif
682 
683 #ifdef CONFIG_DRM_EXYNOS_DP
684 	platform_driver_unregister(&dp_driver);
685 err_unregister_fimd_drv:
686 #endif
687 
688 #ifdef CONFIG_DRM_EXYNOS_FIMD
689 	platform_driver_unregister(&fimd_driver);
690 #endif
691 	return ret;
692 }
693 
694 static int exynos_drm_platform_remove(struct platform_device *pdev)
695 {
696 #ifdef CONFIG_DRM_EXYNOS_IPP
697 	exynos_platform_device_ipp_unregister();
698 	platform_driver_unregister(&ipp_driver);
699 #endif
700 
701 #ifdef CONFIG_DRM_EXYNOS_GSC
702 	platform_driver_unregister(&gsc_driver);
703 #endif
704 
705 #ifdef CONFIG_DRM_EXYNOS_ROTATOR
706 	platform_driver_unregister(&rotator_driver);
707 #endif
708 
709 #ifdef CONFIG_DRM_EXYNOS_FIMC
710 	platform_driver_unregister(&fimc_driver);
711 #endif
712 
713 #ifdef CONFIG_DRM_EXYNOS_G2D
714 	platform_driver_unregister(&g2d_driver);
715 #endif
716 
717 #ifdef CONFIG_DRM_EXYNOS_HDMI
718 	platform_driver_unregister(&mixer_driver);
719 	platform_driver_unregister(&hdmi_driver);
720 #endif
721 
722 #ifdef CONFIG_DRM_EXYNOS_FIMD
723 	platform_driver_unregister(&fimd_driver);
724 #endif
725 
726 #ifdef CONFIG_DRM_EXYNOS_DSI
727 	platform_driver_unregister(&dsi_driver);
728 #endif
729 
730 #ifdef CONFIG_DRM_EXYNOS_DP
731 	platform_driver_unregister(&dp_driver);
732 #endif
733 	component_master_del(&pdev->dev, &exynos_drm_ops);
734 	return 0;
735 }
736 
737 static struct platform_driver exynos_drm_platform_driver = {
738 	.probe	= exynos_drm_platform_probe,
739 	.remove	= exynos_drm_platform_remove,
740 	.driver	= {
741 		.owner	= THIS_MODULE,
742 		.name	= "exynos-drm",
743 		.pm	= &exynos_drm_pm_ops,
744 	},
745 };
746 
747 static int exynos_drm_init(void)
748 {
749 	int ret;
750 
751 	exynos_drm_pdev = platform_device_register_simple("exynos-drm", -1,
752 								NULL, 0);
753 	if (IS_ERR(exynos_drm_pdev))
754 		return PTR_ERR(exynos_drm_pdev);
755 
756 #ifdef CONFIG_DRM_EXYNOS_VIDI
757 	ret = exynos_drm_probe_vidi();
758 	if (ret < 0)
759 		goto err_unregister_pd;
760 #endif
761 
762 	ret = platform_driver_register(&exynos_drm_platform_driver);
763 	if (ret)
764 		goto err_remove_vidi;
765 
766 	return 0;
767 
768 err_remove_vidi:
769 #ifdef CONFIG_DRM_EXYNOS_VIDI
770 	exynos_drm_remove_vidi();
771 
772 err_unregister_pd:
773 #endif
774 	platform_device_unregister(exynos_drm_pdev);
775 
776 	return ret;
777 }
778 
779 static void exynos_drm_exit(void)
780 {
781 	platform_driver_unregister(&exynos_drm_platform_driver);
782 #ifdef CONFIG_DRM_EXYNOS_VIDI
783 	exynos_drm_remove_vidi();
784 #endif
785 	platform_device_unregister(exynos_drm_pdev);
786 }
787 
788 module_init(exynos_drm_init);
789 module_exit(exynos_drm_exit);
790 
791 MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>");
792 MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
793 MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>");
794 MODULE_DESCRIPTION("Samsung SoC DRM Driver");
795 MODULE_LICENSE("GPL");
796