summaryrefslogtreecommitdiff
path: root/drivers/gpu/drm/msm/msm_drv.c
blob: b3a2f16290417cb055a8d7d89dc8f3f876b3a090 (plain)
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
/*
 * Copyright (C) 2013 Red Hat
 * Author: Rob Clark <robdclark@gmail.com>
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 as published by
 * the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#include "msm_drv.h"
#include "msm_gpu.h"

static void msm_fb_output_poll_changed(struct drm_device *dev)
{
	struct msm_drm_private *priv = dev->dev_private;
	if (priv->fbdev)
		drm_fb_helper_hotplug_event(priv->fbdev);
}

static const struct drm_mode_config_funcs mode_config_funcs = {
	.fb_create = msm_framebuffer_create,
	.output_poll_changed = msm_fb_output_poll_changed,
};

static int msm_fault_handler(struct iommu_domain *iommu, struct device *dev,
		unsigned long iova, int flags, void *arg)
{
	DBG("*** fault: iova=%08lx, flags=%d", iova, flags);
	return 0;
}

int msm_register_iommu(struct drm_device *dev, struct iommu_domain *iommu)
{
	struct msm_drm_private *priv = dev->dev_private;
	int idx = priv->num_iommus++;

	if (WARN_ON(idx >= ARRAY_SIZE(priv->iommus)))
		return -EINVAL;

	priv->iommus[idx] = iommu;

	iommu_set_fault_handler(iommu, msm_fault_handler, dev);

	/* need to iommu_attach_device() somewhere??  on resume?? */

	return idx;
}

int msm_iommu_attach(struct drm_device *dev, struct iommu_domain *iommu,
		const char **names, int cnt)
{
	int i, ret;

	for (i = 0; i < cnt; i++) {
		/* TODO maybe some day msm iommu won't require this hack: */
		struct device *msm_iommu_get_ctx(const char *ctx_name);
		struct device *ctx = msm_iommu_get_ctx(names[i]);
		if (!ctx)
			continue;
		ret = iommu_attach_device(iommu, ctx);
		if (ret) {
			dev_warn(dev->dev, "could not attach iommu to %s", names[i]);
			return ret;
		}
	}
	return 0;
}

#ifdef CONFIG_DRM_MSM_REGISTER_LOGGING
static bool reglog = false;
MODULE_PARM_DESC(reglog, "Enable register read/write logging");
module_param(reglog, bool, 0600);
#else
#define reglog 0
#endif

void __iomem *msm_ioremap(struct platform_device *pdev, const char *name,
		const char *dbgname)
{
	struct resource *res;
	unsigned long size;
	void __iomem *ptr;

	if (name)
		res = platform_get_resource_byname(pdev, IORESOURCE_MEM, name);
	else
		res = platform_get_resource(pdev, IORESOURCE_MEM, 0);

	if (!res) {
		dev_err(&pdev->dev, "failed to get memory resource: %s\n", name);
		return ERR_PTR(-EINVAL);
	}

	size = resource_size(res);

	ptr = devm_ioremap_nocache(&pdev->dev, res->start, size);
	if (!ptr) {
		dev_err(&pdev->dev, "failed to ioremap: %s\n", name);
		return ERR_PTR(-ENOMEM);
	}

	if (reglog)
		printk(KERN_DEBUG "IO:region %s %08x %08lx\n", dbgname, (u32)ptr, size);

	return ptr;
}

void msm_writel(u32 data, void __iomem *addr)
{
	if (reglog)
		printk(KERN_DEBUG "IO:W %08x %08x\n", (u32)addr, data);
	writel(data, addr);
}

u32 msm_readl(const void __iomem *addr)
{
	u32 val = readl(addr);
	if (reglog)
		printk(KERN_ERR "IO:R %08x %08x\n", (u32)addr, val);
	return val;
}

/*
 * DRM operations:
 */

static int msm_unload(struct drm_device *dev)
{
	struct msm_drm_private *priv = dev->dev_private;
	struct msm_kms *kms = priv->kms;
	struct msm_gpu *gpu = priv->gpu;

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

	pm_runtime_get_sync(dev->dev);
	drm_irq_uninstall(dev);
	pm_runtime_put_sync(dev->dev);

	flush_workqueue(priv->wq);
	destroy_workqueue(priv->wq);

	if (kms) {
		pm_runtime_disable(dev->dev);
		kms->funcs->destroy(kms);
	}

	if (gpu) {
		mutex_lock(&dev->struct_mutex);
		gpu->funcs->pm_suspend(gpu);
		gpu->funcs->destroy(gpu);
		mutex_unlock(&dev->struct_mutex);
	}

	dev->dev_private = NULL;

	kfree(priv);

	return 0;
}

static int msm_load(struct drm_device *dev, unsigned long flags)
{
	struct platform_device *pdev = dev->platformdev;
	struct msm_drm_private *priv;
	struct msm_kms *kms;
	int ret;

	priv = kzalloc(sizeof(*priv), GFP_KERNEL);
	if (!priv) {
		dev_err(dev->dev, "failed to allocate private data\n");
		return -ENOMEM;
	}

	dev->dev_private = priv;

	priv->wq = alloc_ordered_workqueue("msm", 0);
	init_waitqueue_head(&priv->fence_event);

	INIT_LIST_HEAD(&priv->inactive_list);

	drm_mode_config_init(dev);

	kms = mdp4_kms_init(dev);
	if (IS_ERR(kms)) {
		/*
		 * NOTE: once we have GPU support, having no kms should not
		 * be considered fatal.. ideally we would still support gpu
		 * and (for example) use dmabuf/prime to share buffers with
		 * imx drm driver on iMX5
		 */
		dev_err(dev->dev, "failed to load kms\n");
		ret = PTR_ERR(kms);
		goto fail;
	}

	priv->kms = kms;

	if (kms) {
		pm_runtime_enable(dev->dev);
		ret = kms->funcs->hw_init(kms);
		if (ret) {
			dev_err(dev->dev, "kms hw init failed: %d\n", ret);
			goto fail;
		}
	}

	dev->mode_config.min_width = 0;
	dev->mode_config.min_height = 0;
	dev->mode_config.max_width = 2048;
	dev->mode_config.max_height = 2048;
	dev->mode_config.funcs = &mode_config_funcs;

	ret = drm_vblank_init(dev, 1);
	if (ret < 0) {
		dev_err(dev->dev, "failed to initialize vblank\n");
		goto fail;
	}

	pm_runtime_get_sync(dev->dev);
	ret = drm_irq_install(dev);
	pm_runtime_put_sync(dev->dev);
	if (ret < 0) {
		dev_err(dev->dev, "failed to install IRQ handler\n");
		goto fail;
	}

	platform_set_drvdata(pdev, dev);

#ifdef CONFIG_DRM_MSM_FBDEV
	priv->fbdev = msm_fbdev_init(dev);
#endif

	drm_kms_helper_poll_init(dev);

	return 0;

fail:
	msm_unload(dev);
	return ret;
}

static void load_gpu(struct drm_device *dev)
{
	struct msm_drm_private *priv = dev->dev_private;
	struct msm_gpu *gpu;

	if (priv->gpu)
		return;

	mutex_lock(&dev->struct_mutex);
	gpu = a3xx_gpu_init(dev);
	if (IS_ERR(gpu)) {
		dev_warn(dev->dev, "failed to load a3xx gpu\n");
		gpu = NULL;
		/* not fatal */
	}
	mutex_unlock(&dev->struct_mutex);

	if (gpu) {
		int ret;
		gpu->funcs->pm_resume(gpu);
		ret = gpu->funcs->hw_init(gpu);
		if (ret) {
			dev_err(dev->dev, "gpu hw init failed: %d\n", ret);
			gpu->funcs->destroy(gpu);
			gpu = NULL;
		}
	}

	priv->gpu = gpu;
}

static int msm_open(struct drm_device *dev, struct drm_file *file)
{
	struct msm_file_private *ctx;

	/* For now, load gpu on open.. to avoid the requirement of having
	 * firmware in the initrd.
	 */
	load_gpu(dev);

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

	file->driver_priv = ctx;

	return 0;
}

static void msm_preclose(struct drm_device *dev, struct drm_file *file)
{
	struct msm_drm_private *priv = dev->dev_private;
	struct msm_file_private *ctx = file->driver_priv;
	struct msm_kms *kms = priv->kms;

	if (kms)
		kms->funcs->preclose(kms, file);

	mutex_lock(&dev->struct_mutex);
	if (ctx == priv->lastctx)
		priv->lastctx = NULL;
	mutex_unlock(&dev->struct_mutex);

	kfree(ctx);
}

static void msm_lastclose(struct drm_device *dev)
{
	struct msm_drm_private *priv = dev->dev_private;
	if (priv->fbdev) {
		drm_modeset_lock_all(dev);
		drm_fb_helper_restore_fbdev_mode(priv->fbdev);
		drm_modeset_unlock_all(dev);
	}
}

static irqreturn_t msm_irq(DRM_IRQ_ARGS)
{
	struct drm_device *dev = arg;
	struct msm_drm_private *priv = dev->dev_private;
	struct msm_kms *kms = priv->kms;
	BUG_ON(!kms);
	return kms->funcs->irq(kms);
}

static void msm_irq_preinstall(struct drm_device *dev)
{
	struct msm_drm_private *priv = dev->dev_private;
	struct msm_kms *kms = priv->kms;
	BUG_ON(!kms);
	kms->funcs->irq_preinstall(kms);
}

static int msm_irq_postinstall(struct drm_device *dev)
{
	struct msm_drm_private *priv = dev->dev_private;
	struct msm_kms *kms = priv->kms;
	BUG_ON(!kms);
	return kms->funcs->irq_postinstall(kms);
}

static void msm_irq_uninstall(struct drm_device *dev)
{
	struct msm_drm_private *priv = dev->dev_private;
	struct msm_kms *kms = priv->kms;
	BUG_ON(!kms);
	kms->funcs->irq_uninstall(kms);
}

static int msm_enable_vblank(struct drm_device *dev, int crtc_id)
{
	struct msm_drm_private *priv = dev->dev_private;
	struct msm_kms *kms = priv->kms;
	if (!kms)
		return -ENXIO;
	DBG("dev=%p, crtc=%d", dev, crtc_id);
	return kms->funcs->enable_vblank(kms, priv->crtcs[crtc_id]);
}

static void msm_disable_vblank(struct drm_device *dev, int crtc_id)
{
	struct msm_drm_private *priv = dev->dev_private;
	struct msm_kms *kms = priv->kms;
	if (!kms)
		return;
	DBG("dev=%p, crtc=%d", dev, crtc_id);
	kms->funcs->disable_vblank(kms, priv->crtcs[crtc_id]);
}

/*
 * DRM debugfs:
 */

#ifdef CONFIG_DEBUG_FS
static int msm_gpu_show(struct drm_device *dev, struct seq_file *m)
{
	struct msm_drm_private *priv = dev->dev_private;
	struct msm_gpu *gpu = priv->gpu;

	if (gpu) {
		seq_printf(m, "%s Status:\n", gpu->name);
		gpu->funcs->show(gpu, m);
	}

	return 0;
}

static int msm_gem_show(struct drm_device *dev, struct seq_file *m)
{
	struct msm_drm_private *priv = dev->dev_private;
	struct msm_gpu *gpu = priv->gpu;

	if (gpu) {
		seq_printf(m, "Active Objects (%s):\n", gpu->name);
		msm_gem_describe_objects(&gpu->active_list, m);
	}

	seq_printf(m, "Inactive Objects:\n");
	msm_gem_describe_objects(&priv->inactive_list, m);

	return 0;
}

static int msm_mm_show(struct drm_device *dev, struct seq_file *m)
{
	return drm_mm_dump_table(m, dev->mm_private);
}

static int msm_fb_show(struct drm_device *dev, struct seq_file *m)
{
	struct msm_drm_private *priv = dev->dev_private;
	struct drm_framebuffer *fb, *fbdev_fb = NULL;

	if (priv->fbdev) {
		seq_printf(m, "fbcon ");
		fbdev_fb = priv->fbdev->fb;
		msm_framebuffer_describe(fbdev_fb, m);
	}

	mutex_lock(&dev->mode_config.fb_lock);
	list_for_each_entry(fb, &dev->mode_config.fb_list, head) {
		if (fb == fbdev_fb)
			continue;

		seq_printf(m, "user ");
		msm_framebuffer_describe(fb, m);
	}
	mutex_unlock(&dev->mode_config.fb_lock);

	return 0;
}

static int show_locked(struct seq_file *m, void *arg)
{
	struct drm_info_node *node = (struct drm_info_node *) m->private;
	struct drm_device *dev = node->minor->dev;
	int (*show)(struct drm_device *dev, struct seq_file *m) =
			node->info_ent->data;
	int ret;

	ret = mutex_lock_interruptible(&dev->struct_mutex);
	if (ret)
		return ret;

	ret = show(dev, m);

	mutex_unlock(&dev->struct_mutex);

	return ret;
}

static struct drm_info_list msm_debugfs_list[] = {
		{"gpu", show_locked, 0, msm_gpu_show},
		{"gem", show_locked, 0, msm_gem_show},
		{ "mm", show_locked, 0, msm_mm_show },
		{ "fb", show_locked, 0, msm_fb_show },
};

static int msm_debugfs_init(struct drm_minor *minor)
{
	struct drm_device *dev = minor->dev;
	int ret;

	ret = drm_debugfs_create_files(msm_debugfs_list,
			ARRAY_SIZE(msm_debugfs_list),
			minor->debugfs_root, minor);

	if (ret) {
		dev_err(dev->dev, "could not install msm_debugfs_list\n");
		return ret;
	}

	return ret;
}

static void msm_debugfs_cleanup(struct drm_minor *minor)
{
	drm_debugfs_remove_files(msm_debugfs_list,
			ARRAY_SIZE(msm_debugfs_list), minor);
}
#endif

/*
 * Fences:
 */

int msm_wait_fence_interruptable(struct drm_device *dev, uint32_t fence,
		struct timespec *timeout)
{
	struct msm_drm_private *priv = dev->dev_private;
	int ret;

	if (!priv->gpu)
		return 0;

	if (fence > priv->gpu->submitted_fence) {
		DRM_ERROR("waiting on invalid fence: %u (of %u)\n",
				fence, priv->gpu->submitted_fence);
		return -EINVAL;
	}

	if (!timeout) {
		/* no-wait: */
		ret = fence_completed(dev, fence) ? 0 : -EBUSY;
	} else {
		unsigned long timeout_jiffies = timespec_to_jiffies(timeout);
		unsigned long start_jiffies = jiffies;
		unsigned long remaining_jiffies;

		if (time_after(start_jiffies, timeout_jiffies))
			remaining_jiffies = 0;
		else
			remaining_jiffies = timeout_jiffies - start_jiffies;

		ret = wait_event_interruptible_timeout(priv->fence_event,
				fence_completed(dev, fence),
				remaining_jiffies);

		if (ret == 0) {
			DBG("timeout waiting for fence: %u (completed: %u)",
					fence, priv->completed_fence);
			ret = -ETIMEDOUT;
		} else if (ret != -ERESTARTSYS) {
			ret = 0;
		}
	}

	return ret;
}

/* call under struct_mutex */
void msm_update_fence(struct drm_device *dev, uint32_t fence)
{
	struct msm_drm_private *priv = dev->dev_private;

	if (fence > priv->completed_fence) {
		priv->completed_fence = fence;
		wake_up_all(&priv->fence_event);
	}
}

/*
 * DRM ioctls:
 */

static int msm_ioctl_get_param(struct drm_device *dev, void *data,
		struct drm_file *file)
{
	struct msm_drm_private *priv = dev->dev_private;
	struct drm_msm_param *args = data;
	struct msm_gpu *gpu;

	/* for now, we just have 3d pipe.. eventually this would need to
	 * be more clever to dispatch to appropriate gpu module:
	 */
	if (args->pipe != MSM_PIPE_3D0)
		return -EINVAL;

	gpu = priv->gpu;

	if (!gpu)
		return -ENXIO;

	return gpu->funcs->get_param(gpu, args->param, &args->value);
}

static int msm_ioctl_gem_new(struct drm_device *dev, void *data,
		struct drm_file *file)
{
	struct drm_msm_gem_new *args = data;
	return msm_gem_new_handle(dev, file, args->size,
			args->flags, &args->handle);
}

#define TS(t) ((struct timespec){ .tv_sec = (t).tv_sec, .tv_nsec = (t).tv_nsec })

static int msm_ioctl_gem_cpu_prep(struct drm_device *dev, void *data,
		struct drm_file *file)
{
	struct drm_msm_gem_cpu_prep *args = data;
	struct drm_gem_object *obj;
	int ret;

	obj = drm_gem_object_lookup(dev, file, args->handle);
	if (!obj)
		return -ENOENT;

	ret = msm_gem_cpu_prep(obj, args->op, &TS(args->timeout));

	drm_gem_object_unreference_unlocked(obj);

	return ret;
}

static int msm_ioctl_gem_cpu_fini(struct drm_device *dev, void *data,
		struct drm_file *file)
{
	struct drm_msm_gem_cpu_fini *args = data;
	struct drm_gem_object *obj;
	int ret;

	obj = drm_gem_object_lookup(dev, file, args->handle);
	if (!obj)
		return -ENOENT;

	ret = msm_gem_cpu_fini(obj);

	drm_gem_object_unreference_unlocked(obj);

	return ret;
}

static int msm_ioctl_gem_info(struct drm_device *dev, void *data,
		struct drm_file *file)
{
	struct drm_msm_gem_info *args = data;
	struct drm_gem_object *obj;
	int ret = 0;

	if (args->pad)
		return -EINVAL;

	obj = drm_gem_object_lookup(dev, file, args->handle);
	if (!obj)
		return -ENOENT;

	args->offset = msm_gem_mmap_offset(obj);

	drm_gem_object_unreference_unlocked(obj);

	return ret;
}

static int msm_ioctl_wait_fence(struct drm_device *dev, void *data,
		struct drm_file *file)
{
	struct drm_msm_wait_fence *args = data;
	return msm_wait_fence_interruptable(dev, args->fence, &TS(args->timeout));
}

static const struct drm_ioctl_desc msm_ioctls[] = {
	DRM_IOCTL_DEF_DRV(MSM_GET_PARAM,    msm_ioctl_get_param,    DRM_UNLOCKED|DRM_AUTH),
	DRM_IOCTL_DEF_DRV(MSM_GEM_NEW,      msm_ioctl_gem_new,      DRM_UNLOCKED|DRM_AUTH),
	DRM_IOCTL_DEF_DRV(MSM_GEM_INFO,     msm_ioctl_gem_info,     DRM_UNLOCKED|DRM_AUTH),
	DRM_IOCTL_DEF_DRV(MSM_GEM_CPU_PREP, msm_ioctl_gem_cpu_prep, DRM_UNLOCKED|DRM_AUTH),
	DRM_IOCTL_DEF_DRV(MSM_GEM_CPU_FINI, msm_ioctl_gem_cpu_fini, DRM_UNLOCKED|DRM_AUTH),
	DRM_IOCTL_DEF_DRV(MSM_GEM_SUBMIT,   msm_ioctl_gem_submit,   DRM_UNLOCKED|DRM_AUTH),
	DRM_IOCTL_DEF_DRV(MSM_WAIT_FENCE,   msm_ioctl_wait_fence,   DRM_UNLOCKED|DRM_AUTH),
};

static const struct vm_operations_struct vm_ops = {
	.fault = msm_gem_fault,
	.open = drm_gem_vm_open,
	.close = drm_gem_vm_close,
};

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

static struct drm_driver msm_driver = {
	.driver_features    = DRIVER_HAVE_IRQ | DRIVER_GEM | DRIVER_MODESET,
	.load               = msm_load,
	.unload             = msm_unload,
	.open               = msm_open,
	.preclose           = msm_preclose,
	.lastclose          = msm_lastclose,
	.irq_handler        = msm_irq,
	.irq_preinstall     = msm_irq_preinstall,
	.irq_postinstall    = msm_irq_postinstall,
	.irq_uninstall      = msm_irq_uninstall,
	.get_vblank_counter = drm_vblank_count,
	.enable_vblank      = msm_enable_vblank,
	.disable_vblank     = msm_disable_vblank,
	.gem_free_object    = msm_gem_free_object,
	.gem_vm_ops         = &vm_ops,
	.dumb_create        = msm_gem_dumb_create,
	.dumb_map_offset    = msm_gem_dumb_map_offset,
	.dumb_destroy       = drm_gem_dumb_destroy,
#ifdef CONFIG_DEBUG_FS
	.debugfs_init       = msm_debugfs_init,
	.debugfs_cleanup    = msm_debugfs_cleanup,
#endif
	.ioctls             = msm_ioctls,
	.num_ioctls         = DRM_MSM_NUM_IOCTLS,
	.fops               = &fops,
	.name               = "msm",
	.desc               = "MSM Snapdragon DRM",
	.date               = "20130625",
	.major              = 1,
	.minor              = 0,
};

#ifdef CONFIG_PM_SLEEP
static int msm_pm_suspend(struct device *dev)
{
	struct drm_device *ddev = dev_get_drvdata(dev);

	drm_kms_helper_poll_disable(ddev);

	return 0;
}

static int msm_pm_resume(struct device *dev)
{
	struct drm_device *ddev = dev_get_drvdata(dev);

	drm_kms_helper_poll_enable(ddev);

	return 0;
}
#endif

static const struct dev_pm_ops msm_pm_ops = {
	SET_SYSTEM_SLEEP_PM_OPS(msm_pm_suspend, msm_pm_resume)
};

/*
 * Platform driver:
 */

static int msm_pdev_probe(struct platform_device *pdev)
{
	return drm_platform_init(&msm_driver, pdev);
}

static int msm_pdev_remove(struct platform_device *pdev)
{
	drm_platform_exit(&msm_driver, pdev);

	return 0;
}

static const struct platform_device_id msm_id[] = {
	{ "mdp", 0 },
	{ }
};

static struct platform_driver msm_platform_driver = {
	.probe      = msm_pdev_probe,
	.remove     = msm_pdev_remove,
	.driver     = {
		.owner  = THIS_MODULE,
		.name   = "msm",
		.pm     = &msm_pm_ops,
	},
	.id_table   = msm_id,
};

static int __init msm_drm_register(void)
{
	DBG("init");
	hdmi_register();
	a3xx_register();
	return platform_driver_register(&msm_platform_driver);
}

static void __exit msm_drm_unregister(void)
{
	DBG("fini");
	platform_driver_unregister(&msm_platform_driver);
	hdmi_unregister();
	a3xx_unregister();
}

module_init(msm_drm_register);
module_exit(msm_drm_unregister);

MODULE_AUTHOR("Rob Clark <robdclark@gmail.com");
MODULE_DESCRIPTION("MSM DRM Driver");
MODULE_LICENSE("GPL");