summaryrefslogtreecommitdiff
path: root/drivers/gpu/drm/etnaviv/etnaviv_drv.c
blob: f0a07278ad047187904f62251d9d02687b696a5f (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
// SPDX-License-Identifier: GPL-2.0
/*
 * Copyright (C) 2015-2018 Etnaviv Project
 */

#include <linux/component.h>
#include <linux/dma-mapping.h>
#include <linux/module.h>
#include <linux/of_platform.h>
#include <linux/uaccess.h>

#include <drm/drm_debugfs.h>
#include <drm/drm_drv.h>
#include <drm/drm_file.h>
#include <drm/drm_ioctl.h>
#include <drm/drm_of.h>
#include <drm/drm_prime.h>

#include "etnaviv_cmdbuf.h"
#include "etnaviv_drv.h"
#include "etnaviv_gpu.h"
#include "etnaviv_gem.h"
#include "etnaviv_mmu.h"
#include "etnaviv_perfmon.h"

/*
 * DRM operations:
 */


static void load_gpu(struct drm_device *dev)
{
	struct etnaviv_drm_private *priv = dev->dev_private;
	unsigned int i;

	for (i = 0; i < ETNA_MAX_PIPES; i++) {
		struct etnaviv_gpu *g = priv->gpu[i];

		if (g) {
			int ret;

			ret = etnaviv_gpu_init(g);
			if (ret)
				priv->gpu[i] = NULL;
		}
	}
}

static int etnaviv_open(struct drm_device *dev, struct drm_file *file)
{
	struct etnaviv_drm_private *priv = dev->dev_private;
	struct etnaviv_file_private *ctx;
	int ret, i;

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

	ctx->mmu = etnaviv_iommu_context_init(priv->mmu_global,
					      priv->cmdbuf_suballoc);
	if (!ctx->mmu) {
		ret = -ENOMEM;
		goto out_free;
	}

	for (i = 0; i < ETNA_MAX_PIPES; i++) {
		struct etnaviv_gpu *gpu = priv->gpu[i];
		struct drm_gpu_scheduler *sched;

		if (gpu) {
			sched = &gpu->sched;
			drm_sched_entity_init(&ctx->sched_entity[i],
					      DRM_SCHED_PRIORITY_NORMAL, &sched,
					      1, NULL);
			}
	}

	file->driver_priv = ctx;

	return 0;

out_free:
	kfree(ctx);
	return ret;
}

static void etnaviv_postclose(struct drm_device *dev, struct drm_file *file)
{
	struct etnaviv_drm_private *priv = dev->dev_private;
	struct etnaviv_file_private *ctx = file->driver_priv;
	unsigned int i;

	for (i = 0; i < ETNA_MAX_PIPES; i++) {
		struct etnaviv_gpu *gpu = priv->gpu[i];

		if (gpu)
			drm_sched_entity_destroy(&ctx->sched_entity[i]);
	}

	etnaviv_iommu_context_put(ctx->mmu);

	kfree(ctx);
}

/*
 * DRM debugfs:
 */

#ifdef CONFIG_DEBUG_FS
static int etnaviv_gem_show(struct drm_device *dev, struct seq_file *m)
{
	struct etnaviv_drm_private *priv = dev->dev_private;

	etnaviv_gem_describe_objects(priv, m);

	return 0;
}

static int etnaviv_mm_show(struct drm_device *dev, struct seq_file *m)
{
	struct drm_printer p = drm_seq_file_printer(m);

	read_lock(&dev->vma_offset_manager->vm_lock);
	drm_mm_print(&dev->vma_offset_manager->vm_addr_space_mm, &p);
	read_unlock(&dev->vma_offset_manager->vm_lock);

	return 0;
}

static int etnaviv_mmu_show(struct etnaviv_gpu *gpu, struct seq_file *m)
{
	struct drm_printer p = drm_seq_file_printer(m);
	struct etnaviv_iommu_context *mmu_context;

	seq_printf(m, "Active Objects (%s):\n", dev_name(gpu->dev));

	/*
	 * Lock the GPU to avoid a MMU context switch just now and elevate
	 * the refcount of the current context to avoid it disappearing from
	 * under our feet.
	 */
	mutex_lock(&gpu->lock);
	mmu_context = gpu->mmu_context;
	if (mmu_context)
		etnaviv_iommu_context_get(mmu_context);
	mutex_unlock(&gpu->lock);

	if (!mmu_context)
		return 0;

	mutex_lock(&mmu_context->lock);
	drm_mm_print(&mmu_context->mm, &p);
	mutex_unlock(&mmu_context->lock);

	etnaviv_iommu_context_put(mmu_context);

	return 0;
}

static void etnaviv_buffer_dump(struct etnaviv_gpu *gpu, struct seq_file *m)
{
	struct etnaviv_cmdbuf *buf = &gpu->buffer;
	u32 size = buf->size;
	u32 *ptr = buf->vaddr;
	u32 i;

	seq_printf(m, "virt %p - phys 0x%llx - free 0x%08x\n",
			buf->vaddr, (u64)etnaviv_cmdbuf_get_pa(buf),
			size - buf->user_size);

	for (i = 0; i < size / 4; i++) {
		if (i && !(i % 4))
			seq_puts(m, "\n");
		if (i % 4 == 0)
			seq_printf(m, "\t0x%p: ", ptr + i);
		seq_printf(m, "%08x ", *(ptr + i));
	}
	seq_puts(m, "\n");
}

static int etnaviv_ring_show(struct etnaviv_gpu *gpu, struct seq_file *m)
{
	seq_printf(m, "Ring Buffer (%s): ", dev_name(gpu->dev));

	mutex_lock(&gpu->lock);
	etnaviv_buffer_dump(gpu, m);
	mutex_unlock(&gpu->lock);

	return 0;
}

static int show_unlocked(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;

	return show(dev, m);
}

static int show_each_gpu(struct seq_file *m, void *arg)
{
	struct drm_info_node *node = (struct drm_info_node *) m->private;
	struct drm_device *dev = node->minor->dev;
	struct etnaviv_drm_private *priv = dev->dev_private;
	struct etnaviv_gpu *gpu;
	int (*show)(struct etnaviv_gpu *gpu, struct seq_file *m) =
			node->info_ent->data;
	unsigned int i;
	int ret = 0;

	for (i = 0; i < ETNA_MAX_PIPES; i++) {
		gpu = priv->gpu[i];
		if (!gpu)
			continue;

		ret = show(gpu, m);
		if (ret < 0)
			break;
	}

	return ret;
}

static struct drm_info_list etnaviv_debugfs_list[] = {
		{"gpu", show_each_gpu, 0, etnaviv_gpu_debugfs},
		{"gem", show_unlocked, 0, etnaviv_gem_show},
		{ "mm", show_unlocked, 0, etnaviv_mm_show },
		{"mmu", show_each_gpu, 0, etnaviv_mmu_show},
		{"ring", show_each_gpu, 0, etnaviv_ring_show},
};

static void etnaviv_debugfs_init(struct drm_minor *minor)
{
	drm_debugfs_create_files(etnaviv_debugfs_list,
				 ARRAY_SIZE(etnaviv_debugfs_list),
				 minor->debugfs_root, minor);
}
#endif

/*
 * DRM ioctls:
 */

static int etnaviv_ioctl_get_param(struct drm_device *dev, void *data,
		struct drm_file *file)
{
	struct etnaviv_drm_private *priv = dev->dev_private;
	struct drm_etnaviv_param *args = data;
	struct etnaviv_gpu *gpu;

	if (args->pipe >= ETNA_MAX_PIPES)
		return -EINVAL;

	gpu = priv->gpu[args->pipe];
	if (!gpu)
		return -ENXIO;

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

static int etnaviv_ioctl_gem_new(struct drm_device *dev, void *data,
		struct drm_file *file)
{
	struct drm_etnaviv_gem_new *args = data;

	if (args->flags & ~(ETNA_BO_CACHED | ETNA_BO_WC | ETNA_BO_UNCACHED |
			    ETNA_BO_FORCE_MMU))
		return -EINVAL;

	return etnaviv_gem_new_handle(dev, file, args->size,
			args->flags, &args->handle);
}

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

	if (args->op & ~(ETNA_PREP_READ | ETNA_PREP_WRITE | ETNA_PREP_NOSYNC))
		return -EINVAL;

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

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

	drm_gem_object_put(obj);

	return ret;
}

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

	if (args->flags)
		return -EINVAL;

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

	ret = etnaviv_gem_cpu_fini(obj);

	drm_gem_object_put(obj);

	return ret;
}

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

	if (args->pad)
		return -EINVAL;

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

	ret = etnaviv_gem_mmap_offset(obj, &args->offset);
	drm_gem_object_put(obj);

	return ret;
}

static int etnaviv_ioctl_wait_fence(struct drm_device *dev, void *data,
		struct drm_file *file)
{
	struct drm_etnaviv_wait_fence *args = data;
	struct etnaviv_drm_private *priv = dev->dev_private;
	struct drm_etnaviv_timespec *timeout = &args->timeout;
	struct etnaviv_gpu *gpu;

	if (args->flags & ~(ETNA_WAIT_NONBLOCK))
		return -EINVAL;

	if (args->pipe >= ETNA_MAX_PIPES)
		return -EINVAL;

	gpu = priv->gpu[args->pipe];
	if (!gpu)
		return -ENXIO;

	if (args->flags & ETNA_WAIT_NONBLOCK)
		timeout = NULL;

	return etnaviv_gpu_wait_fence_interruptible(gpu, args->fence,
						    timeout);
}

static int etnaviv_ioctl_gem_userptr(struct drm_device *dev, void *data,
	struct drm_file *file)
{
	struct drm_etnaviv_gem_userptr *args = data;

	if (args->flags & ~(ETNA_USERPTR_READ|ETNA_USERPTR_WRITE) ||
	    args->flags == 0)
		return -EINVAL;

	if (offset_in_page(args->user_ptr | args->user_size) ||
	    (uintptr_t)args->user_ptr != args->user_ptr ||
	    (u32)args->user_size != args->user_size ||
	    args->user_ptr & ~PAGE_MASK)
		return -EINVAL;

	if (!access_ok((void __user *)(unsigned long)args->user_ptr,
		       args->user_size))
		return -EFAULT;

	return etnaviv_gem_new_userptr(dev, file, args->user_ptr,
				       args->user_size, args->flags,
				       &args->handle);
}

static int etnaviv_ioctl_gem_wait(struct drm_device *dev, void *data,
	struct drm_file *file)
{
	struct etnaviv_drm_private *priv = dev->dev_private;
	struct drm_etnaviv_gem_wait *args = data;
	struct drm_etnaviv_timespec *timeout = &args->timeout;
	struct drm_gem_object *obj;
	struct etnaviv_gpu *gpu;
	int ret;

	if (args->flags & ~(ETNA_WAIT_NONBLOCK))
		return -EINVAL;

	if (args->pipe >= ETNA_MAX_PIPES)
		return -EINVAL;

	gpu = priv->gpu[args->pipe];
	if (!gpu)
		return -ENXIO;

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

	if (args->flags & ETNA_WAIT_NONBLOCK)
		timeout = NULL;

	ret = etnaviv_gem_wait_bo(gpu, obj, timeout);

	drm_gem_object_put(obj);

	return ret;
}

static int etnaviv_ioctl_pm_query_dom(struct drm_device *dev, void *data,
	struct drm_file *file)
{
	struct etnaviv_drm_private *priv = dev->dev_private;
	struct drm_etnaviv_pm_domain *args = data;
	struct etnaviv_gpu *gpu;

	if (args->pipe >= ETNA_MAX_PIPES)
		return -EINVAL;

	gpu = priv->gpu[args->pipe];
	if (!gpu)
		return -ENXIO;

	return etnaviv_pm_query_dom(gpu, args);
}

static int etnaviv_ioctl_pm_query_sig(struct drm_device *dev, void *data,
	struct drm_file *file)
{
	struct etnaviv_drm_private *priv = dev->dev_private;
	struct drm_etnaviv_pm_signal *args = data;
	struct etnaviv_gpu *gpu;

	if (args->pipe >= ETNA_MAX_PIPES)
		return -EINVAL;

	gpu = priv->gpu[args->pipe];
	if (!gpu)
		return -ENXIO;

	return etnaviv_pm_query_sig(gpu, args);
}

static const struct drm_ioctl_desc etnaviv_ioctls[] = {
#define ETNA_IOCTL(n, func, flags) \
	DRM_IOCTL_DEF_DRV(ETNAVIV_##n, etnaviv_ioctl_##func, flags)
	ETNA_IOCTL(GET_PARAM,    get_param,    DRM_RENDER_ALLOW),
	ETNA_IOCTL(GEM_NEW,      gem_new,      DRM_RENDER_ALLOW),
	ETNA_IOCTL(GEM_INFO,     gem_info,     DRM_RENDER_ALLOW),
	ETNA_IOCTL(GEM_CPU_PREP, gem_cpu_prep, DRM_RENDER_ALLOW),
	ETNA_IOCTL(GEM_CPU_FINI, gem_cpu_fini, DRM_RENDER_ALLOW),
	ETNA_IOCTL(GEM_SUBMIT,   gem_submit,   DRM_RENDER_ALLOW),
	ETNA_IOCTL(WAIT_FENCE,   wait_fence,   DRM_RENDER_ALLOW),
	ETNA_IOCTL(GEM_USERPTR,  gem_userptr,  DRM_RENDER_ALLOW),
	ETNA_IOCTL(GEM_WAIT,     gem_wait,     DRM_RENDER_ALLOW),
	ETNA_IOCTL(PM_QUERY_DOM, pm_query_dom, DRM_RENDER_ALLOW),
	ETNA_IOCTL(PM_QUERY_SIG, pm_query_sig, DRM_RENDER_ALLOW),
};

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

static const struct drm_driver etnaviv_drm_driver = {
	.driver_features    = DRIVER_GEM | DRIVER_RENDER,
	.open               = etnaviv_open,
	.postclose           = etnaviv_postclose,
	.prime_handle_to_fd = drm_gem_prime_handle_to_fd,
	.prime_fd_to_handle = drm_gem_prime_fd_to_handle,
	.gem_prime_import_sg_table = etnaviv_gem_prime_import_sg_table,
	.gem_prime_mmap     = etnaviv_gem_prime_mmap,
#ifdef CONFIG_DEBUG_FS
	.debugfs_init       = etnaviv_debugfs_init,
#endif
	.ioctls             = etnaviv_ioctls,
	.num_ioctls         = DRM_ETNAVIV_NUM_IOCTLS,
	.fops               = &fops,
	.name               = "etnaviv",
	.desc               = "etnaviv DRM",
	.date               = "20151214",
	.major              = 1,
	.minor              = 3,
};

/*
 * Platform driver:
 */
static int etnaviv_bind(struct device *dev)
{
	struct etnaviv_drm_private *priv;
	struct drm_device *drm;
	int ret;

	drm = drm_dev_alloc(&etnaviv_drm_driver, dev);
	if (IS_ERR(drm))
		return PTR_ERR(drm);

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

	dma_set_max_seg_size(dev, SZ_2G);

	mutex_init(&priv->gem_lock);
	INIT_LIST_HEAD(&priv->gem_list);
	priv->num_gpus = 0;
	priv->shm_gfp_mask = GFP_HIGHUSER | __GFP_RETRY_MAYFAIL | __GFP_NOWARN;

	priv->cmdbuf_suballoc = etnaviv_cmdbuf_suballoc_new(drm->dev);
	if (IS_ERR(priv->cmdbuf_suballoc)) {
		dev_err(drm->dev, "Failed to create cmdbuf suballocator\n");
		ret = PTR_ERR(priv->cmdbuf_suballoc);
		goto out_free_priv;
	}

	dev_set_drvdata(dev, drm);

	ret = component_bind_all(dev, drm);
	if (ret < 0)
		goto out_destroy_suballoc;

	load_gpu(drm);

	ret = drm_dev_register(drm, 0);
	if (ret)
		goto out_unbind;

	return 0;

out_unbind:
	component_unbind_all(dev, drm);
out_destroy_suballoc:
	etnaviv_cmdbuf_suballoc_destroy(priv->cmdbuf_suballoc);
out_free_priv:
	kfree(priv);
out_put:
	drm_dev_put(drm);

	return ret;
}

static void etnaviv_unbind(struct device *dev)
{
	struct drm_device *drm = dev_get_drvdata(dev);
	struct etnaviv_drm_private *priv = drm->dev_private;

	drm_dev_unregister(drm);

	component_unbind_all(dev, drm);

	etnaviv_cmdbuf_suballoc_destroy(priv->cmdbuf_suballoc);

	drm->dev_private = NULL;
	kfree(priv);

	drm_dev_put(drm);
}

static const struct component_master_ops etnaviv_master_ops = {
	.bind = etnaviv_bind,
	.unbind = etnaviv_unbind,
};

static int compare_of(struct device *dev, void *data)
{
	struct device_node *np = data;

	return dev->of_node == np;
}

static int compare_str(struct device *dev, void *data)
{
	return !strcmp(dev_name(dev), data);
}

static int etnaviv_pdev_probe(struct platform_device *pdev)
{
	struct device *dev = &pdev->dev;
	struct component_match *match = NULL;

	if (!dev->platform_data) {
		struct device_node *core_node;

		for_each_compatible_node(core_node, NULL, "vivante,gc") {
			if (!of_device_is_available(core_node))
				continue;

			drm_of_component_match_add(&pdev->dev, &match,
						   compare_of, core_node);
		}
	} else {
		char **names = dev->platform_data;
		unsigned i;

		for (i = 0; names[i]; i++)
			component_match_add(dev, &match, compare_str, names[i]);
	}

	return component_master_add_with_match(dev, &etnaviv_master_ops, match);
}

static int etnaviv_pdev_remove(struct platform_device *pdev)
{
	component_master_del(&pdev->dev, &etnaviv_master_ops);

	return 0;
}

static struct platform_driver etnaviv_platform_driver = {
	.probe      = etnaviv_pdev_probe,
	.remove     = etnaviv_pdev_remove,
	.driver     = {
		.name   = "etnaviv",
	},
};

static struct platform_device *etnaviv_drm;

static int __init etnaviv_init(void)
{
	struct platform_device *pdev;
	int ret;
	struct device_node *np;

	etnaviv_validate_init();

	ret = platform_driver_register(&etnaviv_gpu_driver);
	if (ret != 0)
		return ret;

	ret = platform_driver_register(&etnaviv_platform_driver);
	if (ret != 0)
		goto unregister_gpu_driver;

	/*
	 * If the DT contains at least one available GPU device, instantiate
	 * the DRM platform device.
	 */
	for_each_compatible_node(np, NULL, "vivante,gc") {
		if (!of_device_is_available(np))
			continue;

		pdev = platform_device_alloc("etnaviv", -1);
		if (!pdev) {
			ret = -ENOMEM;
			of_node_put(np);
			goto unregister_platform_driver;
		}
		pdev->dev.coherent_dma_mask = DMA_BIT_MASK(40);
		pdev->dev.dma_mask = &pdev->dev.coherent_dma_mask;

		/*
		 * Apply the same DMA configuration to the virtual etnaviv
		 * device as the GPU we found. This assumes that all Vivante
		 * GPUs in the system share the same DMA constraints.
		 */
		of_dma_configure(&pdev->dev, np, true);

		ret = platform_device_add(pdev);
		if (ret) {
			platform_device_put(pdev);
			of_node_put(np);
			goto unregister_platform_driver;
		}

		etnaviv_drm = pdev;
		of_node_put(np);
		break;
	}

	return 0;

unregister_platform_driver:
	platform_driver_unregister(&etnaviv_platform_driver);
unregister_gpu_driver:
	platform_driver_unregister(&etnaviv_gpu_driver);
	return ret;
}
module_init(etnaviv_init);

static void __exit etnaviv_exit(void)
{
	platform_device_unregister(etnaviv_drm);
	platform_driver_unregister(&etnaviv_platform_driver);
	platform_driver_unregister(&etnaviv_gpu_driver);
}
module_exit(etnaviv_exit);

MODULE_AUTHOR("Christian Gmeiner <christian.gmeiner@gmail.com>");
MODULE_AUTHOR("Russell King <rmk+kernel@armlinux.org.uk>");
MODULE_AUTHOR("Lucas Stach <l.stach@pengutronix.de>");
MODULE_DESCRIPTION("etnaviv DRM Driver");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("platform:etnaviv");