aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/gpu/drm/exynos/exynos_drm_drv.c
blob: ab7d182063c3aef8699e0d3322cd9af5dbeeaacd (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
/*
 * Copyright (c) 2011 Samsung Electronics Co., Ltd.
 * Authors:
 *	Inki Dae <inki.dae@samsung.com>
 *	Joonyoung Shim <jy0922.shim@samsung.com>
 *	Seung-Woo Kim <sw0312.kim@samsung.com>
 *
 * This program is free software; you can redistribute  it and/or modify it
 * under  the terms of  the GNU General  Public License as published by the
 * Free Software Foundation;  either version 2 of the  License, or (at your
 * option) any later version.
 */

#include <linux/pm_runtime.h>
#include <drm/drmP.h>
#include <drm/drm_crtc_helper.h>

#include <linux/anon_inodes.h>
#include <linux/component.h>

#include <drm/exynos_drm.h>

#include "exynos_drm_drv.h"
#include "exynos_drm_crtc.h"
#include "exynos_drm_encoder.h"
#include "exynos_drm_fbdev.h"
#include "exynos_drm_fb.h"
#include "exynos_drm_gem.h"
#include "exynos_drm_plane.h"
#include "exynos_drm_vidi.h"
#include "exynos_drm_dmabuf.h"
#include "exynos_drm_g2d.h"
#include "exynos_drm_ipp.h"
#include "exynos_drm_iommu.h"

#define DRIVER_NAME	"exynos"
#define DRIVER_DESC	"Samsung SoC DRM"
#define DRIVER_DATE	"20110530"
#define DRIVER_MAJOR	1
#define DRIVER_MINOR	0

#define VBLANK_OFF_DELAY	50000

static struct platform_device *exynos_drm_pdev;

static DEFINE_MUTEX(drm_component_lock);
static LIST_HEAD(drm_component_list);

struct component_dev {
	struct list_head list;
	struct device *crtc_dev;
	struct device *conn_dev;
	enum exynos_drm_output_type out_type;
	unsigned int dev_type_flag;
};

static int exynos_drm_load(struct drm_device *dev, unsigned long flags)
{
	struct exynos_drm_private *private;
	int ret;
	int nr;

	private = kzalloc(sizeof(struct exynos_drm_private), GFP_KERNEL);
	if (!private)
		return -ENOMEM;

	INIT_LIST_HEAD(&private->pageflip_event_list);
	dev_set_drvdata(dev->dev, dev);
	dev->dev_private = (void *)private;

	/*
	 * create mapping to manage iommu table and set a pointer to iommu
	 * mapping structure to iommu_mapping of private data.
	 * also this iommu_mapping can be used to check if iommu is supported
	 * or not.
	 */
	ret = drm_create_iommu_mapping(dev);
	if (ret < 0) {
		DRM_ERROR("failed to create iommu mapping.\n");
		goto err_free_private;
	}

	drm_mode_config_init(dev);

	exynos_drm_mode_config_init(dev);

	for (nr = 0; nr < MAX_PLANE; nr++) {
		struct drm_plane *plane;
		unsigned long possible_crtcs = (1 << MAX_CRTC) - 1;

		plane = exynos_plane_init(dev, possible_crtcs, false);
		if (!plane)
			goto err_mode_config_cleanup;
	}

	/* init kms poll for handling hpd */
	drm_kms_helper_poll_init(dev);

	ret = drm_vblank_init(dev, MAX_CRTC);
	if (ret)
		goto err_mode_config_cleanup;

	/* setup possible_clones. */
	exynos_drm_encoder_setup(dev);

	drm_vblank_offdelay = VBLANK_OFF_DELAY;

	platform_set_drvdata(dev->platformdev, dev);

	/* Try to bind all sub drivers. */
	ret = component_bind_all(dev->dev, dev);
	if (ret)
		goto err_cleanup_vblank;

	/* Probe non kms sub drivers and virtual display driver. */
	ret = exynos_drm_device_subdrv_probe(dev);
	if (ret)
		goto err_unbind_all;

	/* force connectors detection */
	drm_helper_hpd_irq_event(dev);

	return 0;

err_unbind_all:
	component_unbind_all(dev->dev, dev);
err_cleanup_vblank:
	drm_vblank_cleanup(dev);
err_mode_config_cleanup:
	drm_mode_config_cleanup(dev);
	drm_release_iommu_mapping(dev);
err_free_private:
	kfree(private);

	return ret;
}

static int exynos_drm_unload(struct drm_device *dev)
{
	exynos_drm_device_subdrv_remove(dev);

	exynos_drm_fbdev_fini(dev);
	drm_vblank_cleanup(dev);
	drm_kms_helper_poll_fini(dev);
	drm_mode_config_cleanup(dev);

	drm_release_iommu_mapping(dev);
	kfree(dev->dev_private);

	component_unbind_all(dev->dev, dev);
	dev->dev_private = NULL;

	return 0;
}

static const struct file_operations exynos_drm_gem_fops = {
	.mmap = exynos_drm_gem_mmap_buffer,
};

static int exynos_drm_suspend(struct drm_device *dev, pm_message_t state)
{
	struct drm_connector *connector;

	drm_modeset_lock_all(dev);
	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
		int old_dpms = connector->dpms;

		if (connector->funcs->dpms)
			connector->funcs->dpms(connector, DRM_MODE_DPMS_OFF);

		/* Set the old mode back to the connector for resume */
		connector->dpms = old_dpms;
	}
	drm_modeset_unlock_all(dev);

	return 0;
}

static int exynos_drm_resume(struct drm_device *dev)
{
	struct drm_connector *connector;

	drm_modeset_lock_all(dev);
	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
		if (connector->funcs->dpms)
			connector->funcs->dpms(connector, connector->dpms);
	}
	drm_modeset_unlock_all(dev);

	drm_helper_resume_force_mode(dev);

	return 0;
}

static int exynos_drm_open(struct drm_device *dev, struct drm_file *file)
{
	struct drm_exynos_file_private *file_priv;
	struct file *anon_filp;
	int ret;

	file_priv = kzalloc(sizeof(*file_priv), GFP_KERNEL);
	if (!file_priv)
		return -ENOMEM;

	file->driver_priv = file_priv;

	ret = exynos_drm_subdrv_open(dev, file);
	if (ret)
		goto err_file_priv_free;

	anon_filp = anon_inode_getfile("exynos_gem", &exynos_drm_gem_fops,
					NULL, 0);
	if (IS_ERR(anon_filp)) {
		ret = PTR_ERR(anon_filp);
		goto err_subdrv_close;
	}

	anon_filp->f_mode = FMODE_READ | FMODE_WRITE;
	file_priv->anon_filp = anon_filp;

	return ret;

err_subdrv_close:
	exynos_drm_subdrv_close(dev, file);

err_file_priv_free:
	kfree(file_priv);
	file->driver_priv = NULL;
	return ret;
}

static void exynos_drm_preclose(struct drm_device *dev,
					struct drm_file *file)
{
	exynos_drm_subdrv_close(dev, file);
}

static void exynos_drm_postclose(struct drm_device *dev, struct drm_file *file)
{
	struct exynos_drm_private *private = dev->dev_private;
	struct drm_exynos_file_private *file_priv;
	struct drm_pending_vblank_event *v, *vt;
	struct drm_pending_event *e, *et;
	unsigned long flags;

	if (!file->driver_priv)
		return;

	/* Release all events not unhandled by page flip handler. */
	spin_lock_irqsave(&dev->event_lock, flags);
	list_for_each_entry_safe(v, vt, &private->pageflip_event_list,
			base.link) {
		if (v->base.file_priv == file) {
			list_del(&v->base.link);
			drm_vblank_put(dev, v->pipe);
			v->base.destroy(&v->base);
		}
	}

	/* Release all events handled by page flip handler but not freed. */
	list_for_each_entry_safe(e, et, &file->event_list, link) {
		list_del(&e->link);
		e->destroy(e);
	}
	spin_unlock_irqrestore(&dev->event_lock, flags);

	file_priv = file->driver_priv;
	if (file_priv->anon_filp)
		fput(file_priv->anon_filp);

	kfree(file->driver_priv);
	file->driver_priv = NULL;
}

static void exynos_drm_lastclose(struct drm_device *dev)
{
	exynos_drm_fbdev_restore_mode(dev);
}

static const struct vm_operations_struct exynos_drm_gem_vm_ops = {
	.fault = exynos_drm_gem_fault,
	.open = drm_gem_vm_open,
	.close = drm_gem_vm_close,
};

static const struct drm_ioctl_desc exynos_ioctls[] = {
	DRM_IOCTL_DEF_DRV(EXYNOS_GEM_CREATE, exynos_drm_gem_create_ioctl,
			DRM_UNLOCKED | DRM_AUTH),
	DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MAP_OFFSET,
			exynos_drm_gem_map_offset_ioctl, DRM_UNLOCKED |
			DRM_AUTH),
	DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MMAP,
			exynos_drm_gem_mmap_ioctl, DRM_UNLOCKED | DRM_AUTH),
	DRM_IOCTL_DEF_DRV(EXYNOS_GEM_GET,
			exynos_drm_gem_get_ioctl, DRM_UNLOCKED),
	DRM_IOCTL_DEF_DRV(EXYNOS_VIDI_CONNECTION,
			vidi_connection_ioctl, DRM_UNLOCKED | DRM_AUTH),
	DRM_IOCTL_DEF_DRV(EXYNOS_G2D_GET_VER,
			exynos_g2d_get_ver_ioctl, DRM_UNLOCKED | DRM_AUTH),
	DRM_IOCTL_DEF_DRV(EXYNOS_G2D_SET_CMDLIST,
			exynos_g2d_set_cmdlist_ioctl, DRM_UNLOCKED | DRM_AUTH),
	DRM_IOCTL_DEF_DRV(EXYNOS_G2D_EXEC,
			exynos_g2d_exec_ioctl, DRM_UNLOCKED | DRM_AUTH),
	DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_PROPERTY,
			exynos_drm_ipp_get_property, DRM_UNLOCKED | DRM_AUTH),
	DRM_IOCTL_DEF_DRV(EXYNOS_IPP_SET_PROPERTY,
			exynos_drm_ipp_set_property, DRM_UNLOCKED | DRM_AUTH),
	DRM_IOCTL_DEF_DRV(EXYNOS_IPP_QUEUE_BUF,
			exynos_drm_ipp_queue_buf, DRM_UNLOCKED | DRM_AUTH),
	DRM_IOCTL_DEF_DRV(EXYNOS_IPP_CMD_CTRL,
			exynos_drm_ipp_cmd_ctrl, DRM_UNLOCKED | DRM_AUTH),
};

static const struct file_operations exynos_drm_driver_fops = {
	.owner		= THIS_MODULE,
	.open		= drm_open,
	.mmap		= exynos_drm_gem_mmap,
	.poll		= drm_poll,
	.read		= drm_read,
	.unlocked_ioctl	= drm_ioctl,
#ifdef CONFIG_COMPAT
	.compat_ioctl = drm_compat_ioctl,
#endif
	.release	= drm_release,
};

static struct drm_driver exynos_drm_driver = {
	.driver_features	= DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME,
	.load			= exynos_drm_load,
	.unload			= exynos_drm_unload,
	.suspend		= exynos_drm_suspend,
	.resume			= exynos_drm_resume,
	.open			= exynos_drm_open,
	.preclose		= exynos_drm_preclose,
	.lastclose		= exynos_drm_lastclose,
	.postclose		= exynos_drm_postclose,
	.get_vblank_counter	= drm_vblank_count,
	.enable_vblank		= exynos_drm_crtc_enable_vblank,
	.disable_vblank		= exynos_drm_crtc_disable_vblank,
	.gem_free_object	= exynos_drm_gem_free_object,
	.gem_vm_ops		= &exynos_drm_gem_vm_ops,
	.dumb_create		= exynos_drm_gem_dumb_create,
	.dumb_map_offset	= exynos_drm_gem_dumb_map_offset,
	.dumb_destroy		= drm_gem_dumb_destroy,
	.prime_handle_to_fd	= drm_gem_prime_handle_to_fd,
	.prime_fd_to_handle	= drm_gem_prime_fd_to_handle,
	.gem_prime_export	= exynos_dmabuf_prime_export,
	.gem_prime_import	= exynos_dmabuf_prime_import,
	.ioctls			= exynos_ioctls,
	.num_ioctls		= ARRAY_SIZE(exynos_ioctls),
	.fops			= &exynos_drm_driver_fops,
	.name	= DRIVER_NAME,
	.desc	= DRIVER_DESC,
	.date	= DRIVER_DATE,
	.major	= DRIVER_MAJOR,
	.minor	= DRIVER_MINOR,
};

#ifdef CONFIG_PM_SLEEP
static int exynos_drm_sys_suspend(struct device *dev)
{
	struct drm_device *drm_dev = dev_get_drvdata(dev);
	pm_message_t message;

	if (pm_runtime_suspended(dev))
		return 0;

	message.event = PM_EVENT_SUSPEND;
	return exynos_drm_suspend(drm_dev, message);
}

static int exynos_drm_sys_resume(struct device *dev)
{
	struct drm_device *drm_dev = dev_get_drvdata(dev);

	if (pm_runtime_suspended(dev))
		return 0;

	return exynos_drm_resume(drm_dev);
}
#endif

static const struct dev_pm_ops exynos_drm_pm_ops = {
	SET_SYSTEM_SLEEP_PM_OPS(exynos_drm_sys_suspend, exynos_drm_sys_resume)
};

int exynos_drm_component_add(struct device *dev,
				enum exynos_drm_device_type dev_type,
				enum exynos_drm_output_type out_type)
{
	struct component_dev *cdev;

	if (dev_type != EXYNOS_DEVICE_TYPE_CRTC &&
			dev_type != EXYNOS_DEVICE_TYPE_CONNECTOR) {
		DRM_ERROR("invalid device type.\n");
		return -EINVAL;
	}

	mutex_lock(&drm_component_lock);

	/*
	 * Make sure to check if there is a component which has two device
	 * objects, for connector and for encoder/connector.
	 * It should make sure that crtc and encoder/connector drivers are
	 * ready before exynos drm core binds them.
	 */
	list_for_each_entry(cdev, &drm_component_list, list) {
		if (cdev->out_type == out_type) {
			/*
			 * If crtc and encoder/connector device objects are
			 * added already just return.
			 */
			if (cdev->dev_type_flag == (EXYNOS_DEVICE_TYPE_CRTC |
						EXYNOS_DEVICE_TYPE_CONNECTOR)) {
				mutex_unlock(&drm_component_lock);
				return 0;
			}

			if (dev_type == EXYNOS_DEVICE_TYPE_CRTC) {
				cdev->crtc_dev = dev;
				cdev->dev_type_flag |= dev_type;
			}

			if (dev_type == EXYNOS_DEVICE_TYPE_CONNECTOR) {
				cdev->conn_dev = dev;
				cdev->dev_type_flag |= dev_type;
			}

			mutex_unlock(&drm_component_lock);
			return 0;
		}
	}

	mutex_unlock(&drm_component_lock);

	cdev = kzalloc(sizeof(*cdev), GFP_KERNEL);
	if (!cdev)
		return -ENOMEM;

	if (dev_type == EXYNOS_DEVICE_TYPE_CRTC)
		cdev->crtc_dev = dev;
	if (dev_type == EXYNOS_DEVICE_TYPE_CONNECTOR)
		cdev->conn_dev = dev;

	cdev->out_type = out_type;
	cdev->dev_type_flag = dev_type;

	mutex_lock(&drm_component_lock);
	list_add_tail(&cdev->list, &drm_component_list);
	mutex_unlock(&drm_component_lock);

	return 0;
}

void exynos_drm_component_del(struct device *dev,
				enum exynos_drm_device_type dev_type)
{
	struct component_dev *cdev, *next;

	mutex_lock(&drm_component_lock);

	list_for_each_entry_safe(cdev, next, &drm_component_list, list) {
		if (dev_type == EXYNOS_DEVICE_TYPE_CRTC) {
			if (cdev->crtc_dev == dev) {
				cdev->crtc_dev = NULL;
				cdev->dev_type_flag &= ~dev_type;
			}
		}

		if (dev_type == EXYNOS_DEVICE_TYPE_CONNECTOR) {
			if (cdev->conn_dev == dev) {
				cdev->conn_dev = NULL;
				cdev->dev_type_flag &= ~dev_type;
			}
		}

		/*
		 * Release cdev object only in case that both of crtc and
		 * encoder/connector device objects are NULL.
		 */
		if (!cdev->crtc_dev && !cdev->conn_dev) {
			list_del(&cdev->list);
			kfree(cdev);
		}

		break;
	}

	mutex_unlock(&drm_component_lock);
}

static int compare_of(struct device *dev, void *data)
{
	return dev == (struct device *)data;
}

static int exynos_drm_add_components(struct device *dev, struct master *m)
{
	struct component_dev *cdev;
	unsigned int attach_cnt = 0;

	mutex_lock(&drm_component_lock);

	list_for_each_entry(cdev, &drm_component_list, list) {
		int ret;

		/*
		 * Add components to master only in case that crtc and
		 * encoder/connector device objects exist.
		 */
		if (!cdev->crtc_dev || !cdev->conn_dev)
			continue;

		attach_cnt++;

		mutex_unlock(&drm_component_lock);

		/*
		 * fimd and dpi modules have same device object so add
		 * only crtc device object in this case.
		 *
		 * TODO. if dpi module follows driver-model driver then
		 * below codes can be removed.
		 */
		if (cdev->crtc_dev == cdev->conn_dev) {
			ret = component_master_add_child(m, compare_of,
					cdev->crtc_dev);
			if (ret < 0)
				return ret;

			goto out_lock;
		}

		/*
		 * Do not chage below call order.
		 * crtc device first should be added to master because
		 * connector/encoder need pipe number of crtc when they
		 * are created.
		 */
		ret = component_master_add_child(m, compare_of, cdev->crtc_dev);
		ret |= component_master_add_child(m, compare_of,
							cdev->conn_dev);
		if (ret < 0)
			return ret;

out_lock:
		mutex_lock(&drm_component_lock);
	}

	mutex_unlock(&drm_component_lock);

	return attach_cnt ? 0 : -ENODEV;
}

static int exynos_drm_bind(struct device *dev)
{
	return drm_platform_init(&exynos_drm_driver, to_platform_device(dev));
}

static void exynos_drm_unbind(struct device *dev)
{
	drm_put_dev(dev_get_drvdata(dev));
}

static const struct component_master_ops exynos_drm_ops = {
	.add_components = exynos_drm_add_components,
	.bind		= exynos_drm_bind,
	.unbind		= exynos_drm_unbind,
};

static int exynos_drm_platform_probe(struct platform_device *pdev)
{
	int ret;

	pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
	exynos_drm_driver.num_ioctls = ARRAY_SIZE(exynos_ioctls);

#ifdef CONFIG_DRM_EXYNOS_FIMD
	ret = platform_driver_register(&fimd_driver);
	if (ret < 0)
		return ret;
#endif

#ifdef CONFIG_DRM_EXYNOS_DP
	ret = platform_driver_register(&dp_driver);
	if (ret < 0)
		goto err_unregister_fimd_drv;
#endif

#ifdef CONFIG_DRM_EXYNOS_DSI
	ret = platform_driver_register(&dsi_driver);
	if (ret < 0)
		goto err_unregister_dp_drv;
#endif

#ifdef CONFIG_DRM_EXYNOS_HDMI
	ret = platform_driver_register(&mixer_driver);
	if (ret < 0)
		goto err_unregister_dsi_drv;
	ret = platform_driver_register(&hdmi_driver);
	if (ret < 0)
		goto err_unregister_mixer_drv;
#endif

#ifdef CONFIG_DRM_EXYNOS_G2D
	ret = platform_driver_register(&g2d_driver);
	if (ret < 0)
		goto err_unregister_hdmi_drv;
#endif

#ifdef CONFIG_DRM_EXYNOS_FIMC
	ret = platform_driver_register(&fimc_driver);
	if (ret < 0)
		goto err_unregister_g2d_drv;
#endif

#ifdef CONFIG_DRM_EXYNOS_ROTATOR
	ret = platform_driver_register(&rotator_driver);
	if (ret < 0)
		goto err_unregister_fimc_drv;
#endif

#ifdef CONFIG_DRM_EXYNOS_GSC
	ret = platform_driver_register(&gsc_driver);
	if (ret < 0)
		goto err_unregister_rotator_drv;
#endif

#ifdef CONFIG_DRM_EXYNOS_IPP
	ret = platform_driver_register(&ipp_driver);
	if (ret < 0)
		goto err_unregister_gsc_drv;

	ret = exynos_platform_device_ipp_register();
	if (ret < 0)
		goto err_unregister_ipp_drv;
#endif

	ret = component_master_add(&pdev->dev, &exynos_drm_ops);
	if (ret < 0)
		DRM_DEBUG_KMS("re-tried by last sub driver probed later.\n");

	return 0;

#ifdef CONFIG_DRM_EXYNOS_IPP
err_unregister_ipp_drv:
	platform_driver_unregister(&ipp_driver);
err_unregister_gsc_drv:
#endif

#ifdef CONFIG_DRM_EXYNOS_GSC
	platform_driver_unregister(&gsc_driver);
err_unregister_rotator_drv:
#endif

#ifdef CONFIG_DRM_EXYNOS_ROTATOR
	platform_driver_unregister(&rotator_driver);
err_unregister_fimc_drv:
#endif

#ifdef CONFIG_DRM_EXYNOS_FIMC
	platform_driver_unregister(&fimc_driver);
err_unregister_g2d_drv:
#endif

#ifdef CONFIG_DRM_EXYNOS_G2D
	platform_driver_unregister(&g2d_driver);
err_unregister_hdmi_drv:
#endif

#ifdef CONFIG_DRM_EXYNOS_HDMI
	platform_driver_unregister(&hdmi_driver);
err_unregister_mixer_drv:
	platform_driver_unregister(&mixer_driver);
err_unregister_dsi_drv:
#endif

#ifdef CONFIG_DRM_EXYNOS_DSI
	platform_driver_unregister(&dsi_driver);
err_unregister_dp_drv:
#endif

#ifdef CONFIG_DRM_EXYNOS_DP
	platform_driver_unregister(&dp_driver);
err_unregister_fimd_drv:
#endif

#ifdef CONFIG_DRM_EXYNOS_FIMD
	platform_driver_unregister(&fimd_driver);
#endif
	return ret;
}

static int exynos_drm_platform_remove(struct platform_device *pdev)
{
#ifdef CONFIG_DRM_EXYNOS_IPP
	exynos_platform_device_ipp_unregister();
	platform_driver_unregister(&ipp_driver);
#endif

#ifdef CONFIG_DRM_EXYNOS_GSC
	platform_driver_unregister(&gsc_driver);
#endif

#ifdef CONFIG_DRM_EXYNOS_ROTATOR
	platform_driver_unregister(&rotator_driver);
#endif

#ifdef CONFIG_DRM_EXYNOS_FIMC
	platform_driver_unregister(&fimc_driver);
#endif

#ifdef CONFIG_DRM_EXYNOS_G2D
	platform_driver_unregister(&g2d_driver);
#endif

#ifdef CONFIG_DRM_EXYNOS_HDMI
	platform_driver_unregister(&mixer_driver);
	platform_driver_unregister(&hdmi_driver);
#endif

#ifdef CONFIG_DRM_EXYNOS_FIMD
	platform_driver_unregister(&fimd_driver);
#endif

#ifdef CONFIG_DRM_EXYNOS_DSI
	platform_driver_unregister(&dsi_driver);
#endif

#ifdef CONFIG_DRM_EXYNOS_DP
	platform_driver_unregister(&dp_driver);
#endif
	component_master_del(&pdev->dev, &exynos_drm_ops);
	return 0;
}

static struct platform_driver exynos_drm_platform_driver = {
	.probe	= exynos_drm_platform_probe,
	.remove	= exynos_drm_platform_remove,
	.driver	= {
		.owner	= THIS_MODULE,
		.name	= "exynos-drm",
		.pm	= &exynos_drm_pm_ops,
	},
};

static int exynos_drm_init(void)
{
	int ret;

	exynos_drm_pdev = platform_device_register_simple("exynos-drm", -1,
								NULL, 0);
	if (IS_ERR(exynos_drm_pdev))
		return PTR_ERR(exynos_drm_pdev);

#ifdef CONFIG_DRM_EXYNOS_VIDI
	ret = exynos_drm_probe_vidi();
	if (ret < 0)
		goto err_unregister_pd;
#endif

	ret = platform_driver_register(&exynos_drm_platform_driver);
	if (ret)
		goto err_remove_vidi;

	return 0;

err_remove_vidi:
#ifdef CONFIG_DRM_EXYNOS_VIDI
	exynos_drm_remove_vidi();

err_unregister_pd:
#endif
	platform_device_unregister(exynos_drm_pdev);

	return ret;
}

static void exynos_drm_exit(void)
{
	platform_driver_unregister(&exynos_drm_platform_driver);
#ifdef CONFIG_DRM_EXYNOS_VIDI
	exynos_drm_remove_vidi();
#endif
	platform_device_unregister(exynos_drm_pdev);
}

module_init(exynos_drm_init);
module_exit(exynos_drm_exit);

MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>");
MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>");
MODULE_DESCRIPTION("Samsung SoC DRM Driver");
MODULE_LICENSE("GPL");