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1/*
2 * Copyright (C) 2012 Avionic Design GmbH
3 * Copyright (C) 2012-2013 NVIDIA CORPORATION. All rights reserved.
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
8 */
9
10#include <linux/host1x.h>
11#include <linux/iommu.h>
12
13#include <drm/drm_atomic.h>
14#include <drm/drm_atomic_helper.h>
15
16#include "drm.h"
17#include "gem.h"
18
19#define DRIVER_NAME "tegra"
20#define DRIVER_DESC "NVIDIA Tegra graphics"
21#define DRIVER_DATE "20120330"
22#define DRIVER_MAJOR 0
23#define DRIVER_MINOR 0
24#define DRIVER_PATCHLEVEL 0
25
26struct tegra_drm_file {
27 struct list_head contexts;
28};
29
30static void tegra_atomic_schedule(struct tegra_drm *tegra,
31 struct drm_atomic_state *state)
32{
33 tegra->commit.state = state;
34 schedule_work(&tegra->commit.work);
35}
36
37static void tegra_atomic_complete(struct tegra_drm *tegra,
38 struct drm_atomic_state *state)
39{
40 struct drm_device *drm = tegra->drm;
41
42 /*
43 * Everything below can be run asynchronously without the need to grab
44 * any modeset locks at all under one condition: It must be guaranteed
45 * that the asynchronous work has either been cancelled (if the driver
46 * supports it, which at least requires that the framebuffers get
47 * cleaned up with drm_atomic_helper_cleanup_planes()) or completed
48 * before the new state gets committed on the software side with
49 * drm_atomic_helper_swap_state().
50 *
51 * This scheme allows new atomic state updates to be prepared and
52 * checked in parallel to the asynchronous completion of the previous
53 * update. Which is important since compositors need to figure out the
54 * composition of the next frame right after having submitted the
55 * current layout.
56 */
57
58 drm_atomic_helper_commit_modeset_disables(drm, state);
59 drm_atomic_helper_commit_planes(drm, state, false);
60 drm_atomic_helper_commit_modeset_enables(drm, state);
61
62 drm_atomic_helper_wait_for_vblanks(drm, state);
63
64 drm_atomic_helper_cleanup_planes(drm, state);
65 drm_atomic_state_free(state);
66}
67
68static void tegra_atomic_work(struct work_struct *work)
69{
70 struct tegra_drm *tegra = container_of(work, struct tegra_drm,
71 commit.work);
72
73 tegra_atomic_complete(tegra, tegra->commit.state);
74}
75
76static int tegra_atomic_commit(struct drm_device *drm,
77 struct drm_atomic_state *state, bool async)
78{
79 struct tegra_drm *tegra = drm->dev_private;
80 int err;
81
82 err = drm_atomic_helper_prepare_planes(drm, state);
83 if (err)
84 return err;
85
86 /* serialize outstanding asynchronous commits */
87 mutex_lock(&tegra->commit.lock);
88 flush_work(&tegra->commit.work);
89
90 /*
91 * This is the point of no return - everything below never fails except
92 * when the hw goes bonghits. Which means we can commit the new state on
93 * the software side now.
94 */
95
96 drm_atomic_helper_swap_state(drm, state);
97
98 if (async)
99 tegra_atomic_schedule(tegra, state);
100 else
101 tegra_atomic_complete(tegra, state);
102
103 mutex_unlock(&tegra->commit.lock);
104 return 0;
105}
106
107static const struct drm_mode_config_funcs tegra_drm_mode_funcs = {
108 .fb_create = tegra_fb_create,
109#ifdef CONFIG_DRM_FBDEV_EMULATION
110 .output_poll_changed = tegra_fb_output_poll_changed,
111#endif
112 .atomic_check = drm_atomic_helper_check,
113 .atomic_commit = tegra_atomic_commit,
114};
115
116static int tegra_drm_load(struct drm_device *drm, unsigned long flags)
117{
118 struct host1x_device *device = to_host1x_device(drm->dev);
119 struct tegra_drm *tegra;
120 int err;
121
122 tegra = kzalloc(sizeof(*tegra), GFP_KERNEL);
123 if (!tegra)
124 return -ENOMEM;
125
126 if (iommu_present(&platform_bus_type)) {
127 struct iommu_domain_geometry *geometry;
128 u64 start, end;
129
130 tegra->domain = iommu_domain_alloc(&platform_bus_type);
131 if (!tegra->domain) {
132 err = -ENOMEM;
133 goto free;
134 }
135
136 geometry = &tegra->domain->geometry;
137 start = geometry->aperture_start;
138 end = geometry->aperture_end;
139
140 DRM_DEBUG_DRIVER("IOMMU aperture initialized (%#llx-%#llx)\n",
141 start, end);
142 drm_mm_init(&tegra->mm, start, end - start + 1);
143 }
144
145 mutex_init(&tegra->clients_lock);
146 INIT_LIST_HEAD(&tegra->clients);
147
148 mutex_init(&tegra->commit.lock);
149 INIT_WORK(&tegra->commit.work, tegra_atomic_work);
150
151 drm->dev_private = tegra;
152 tegra->drm = drm;
153
154 drm_mode_config_init(drm);
155
156 drm->mode_config.min_width = 0;
157 drm->mode_config.min_height = 0;
158
159 drm->mode_config.max_width = 4096;
160 drm->mode_config.max_height = 4096;
161
162 drm->mode_config.funcs = &tegra_drm_mode_funcs;
163
164 err = tegra_drm_fb_prepare(drm);
165 if (err < 0)
166 goto config;
167
168 drm_kms_helper_poll_init(drm);
169
170 err = host1x_device_init(device);
171 if (err < 0)
172 goto fbdev;
173
174 /*
175 * We don't use the drm_irq_install() helpers provided by the DRM
176 * core, so we need to set this manually in order to allow the
177 * DRM_IOCTL_WAIT_VBLANK to operate correctly.
178 */
179 drm->irq_enabled = true;
180
181 /* syncpoints are used for full 32-bit hardware VBLANK counters */
182 drm->max_vblank_count = 0xffffffff;
183 drm->vblank_disable_allowed = true;
184
185 err = drm_vblank_init(drm, drm->mode_config.num_crtc);
186 if (err < 0)
187 goto device;
188
189 drm_mode_config_reset(drm);
190
191 err = tegra_drm_fb_init(drm);
192 if (err < 0)
193 goto vblank;
194
195 return 0;
196
197vblank:
198 drm_vblank_cleanup(drm);
199device:
200 host1x_device_exit(device);
201fbdev:
202 drm_kms_helper_poll_fini(drm);
203 tegra_drm_fb_free(drm);
204config:
205 drm_mode_config_cleanup(drm);
206
207 if (tegra->domain) {
208 iommu_domain_free(tegra->domain);
209 drm_mm_takedown(&tegra->mm);
210 }
211free:
212 kfree(tegra);
213 return err;
214}
215
216static int tegra_drm_unload(struct drm_device *drm)
217{
218 struct host1x_device *device = to_host1x_device(drm->dev);
219 struct tegra_drm *tegra = drm->dev_private;
220 int err;
221
222 drm_kms_helper_poll_fini(drm);
223 tegra_drm_fb_exit(drm);
224 drm_mode_config_cleanup(drm);
225 drm_vblank_cleanup(drm);
226
227 err = host1x_device_exit(device);
228 if (err < 0)
229 return err;
230
231 if (tegra->domain) {
232 iommu_domain_free(tegra->domain);
233 drm_mm_takedown(&tegra->mm);
234 }
235
236 kfree(tegra);
237
238 return 0;
239}
240
241static int tegra_drm_open(struct drm_device *drm, struct drm_file *filp)
242{
243 struct tegra_drm_file *fpriv;
244
245 fpriv = kzalloc(sizeof(*fpriv), GFP_KERNEL);
246 if (!fpriv)
247 return -ENOMEM;
248
249 INIT_LIST_HEAD(&fpriv->contexts);
250 filp->driver_priv = fpriv;
251
252 return 0;
253}
254
255static void tegra_drm_context_free(struct tegra_drm_context *context)
256{
257 context->client->ops->close_channel(context);
258 kfree(context);
259}
260
261static void tegra_drm_lastclose(struct drm_device *drm)
262{
263#ifdef CONFIG_DRM_FBDEV_EMULATION
264 struct tegra_drm *tegra = drm->dev_private;
265
266 tegra_fbdev_restore_mode(tegra->fbdev);
267#endif
268}
269
270static struct host1x_bo *
271host1x_bo_lookup(struct drm_device *drm, struct drm_file *file, u32 handle)
272{
273 struct drm_gem_object *gem;
274 struct tegra_bo *bo;
275
276 gem = drm_gem_object_lookup(drm, file, handle);
277 if (!gem)
278 return NULL;
279
280 drm_gem_object_unreference_unlocked(gem);
281
282 bo = to_tegra_bo(gem);
283 return &bo->base;
284}
285
286static int host1x_reloc_copy_from_user(struct host1x_reloc *dest,
287 struct drm_tegra_reloc __user *src,
288 struct drm_device *drm,
289 struct drm_file *file)
290{
291 u32 cmdbuf, target;
292 int err;
293
294 err = get_user(cmdbuf, &src->cmdbuf.handle);
295 if (err < 0)
296 return err;
297
298 err = get_user(dest->cmdbuf.offset, &src->cmdbuf.offset);
299 if (err < 0)
300 return err;
301
302 err = get_user(target, &src->target.handle);
303 if (err < 0)
304 return err;
305
306 err = get_user(dest->target.offset, &src->target.offset);
307 if (err < 0)
308 return err;
309
310 err = get_user(dest->shift, &src->shift);
311 if (err < 0)
312 return err;
313
314 dest->cmdbuf.bo = host1x_bo_lookup(drm, file, cmdbuf);
315 if (!dest->cmdbuf.bo)
316 return -ENOENT;
317
318 dest->target.bo = host1x_bo_lookup(drm, file, target);
319 if (!dest->target.bo)
320 return -ENOENT;
321
322 return 0;
323}
324
325int tegra_drm_submit(struct tegra_drm_context *context,
326 struct drm_tegra_submit *args, struct drm_device *drm,
327 struct drm_file *file)
328{
329 unsigned int num_cmdbufs = args->num_cmdbufs;
330 unsigned int num_relocs = args->num_relocs;
331 unsigned int num_waitchks = args->num_waitchks;
332 struct drm_tegra_cmdbuf __user *cmdbufs =
333 (void __user *)(uintptr_t)args->cmdbufs;
334 struct drm_tegra_reloc __user *relocs =
335 (void __user *)(uintptr_t)args->relocs;
336 struct drm_tegra_waitchk __user *waitchks =
337 (void __user *)(uintptr_t)args->waitchks;
338 struct drm_tegra_syncpt syncpt;
339 struct host1x_job *job;
340 int err;
341
342 /* We don't yet support other than one syncpt_incr struct per submit */
343 if (args->num_syncpts != 1)
344 return -EINVAL;
345
346 job = host1x_job_alloc(context->channel, args->num_cmdbufs,
347 args->num_relocs, args->num_waitchks);
348 if (!job)
349 return -ENOMEM;
350
351 job->num_relocs = args->num_relocs;
352 job->num_waitchk = args->num_waitchks;
353 job->client = (u32)args->context;
354 job->class = context->client->base.class;
355 job->serialize = true;
356
357 while (num_cmdbufs) {
358 struct drm_tegra_cmdbuf cmdbuf;
359 struct host1x_bo *bo;
360
361 if (copy_from_user(&cmdbuf, cmdbufs, sizeof(cmdbuf))) {
362 err = -EFAULT;
363 goto fail;
364 }
365
366 bo = host1x_bo_lookup(drm, file, cmdbuf.handle);
367 if (!bo) {
368 err = -ENOENT;
369 goto fail;
370 }
371
372 host1x_job_add_gather(job, bo, cmdbuf.words, cmdbuf.offset);
373 num_cmdbufs--;
374 cmdbufs++;
375 }
376
377 /* copy and resolve relocations from submit */
378 while (num_relocs--) {
379 err = host1x_reloc_copy_from_user(&job->relocarray[num_relocs],
380 &relocs[num_relocs], drm,
381 file);
382 if (err < 0)
383 goto fail;
384 }
385
386 if (copy_from_user(job->waitchk, waitchks,
387 sizeof(*waitchks) * num_waitchks)) {
388 err = -EFAULT;
389 goto fail;
390 }
391
392 if (copy_from_user(&syncpt, (void __user *)(uintptr_t)args->syncpts,
393 sizeof(syncpt))) {
394 err = -EFAULT;
395 goto fail;
396 }
397
398 job->is_addr_reg = context->client->ops->is_addr_reg;
399 job->syncpt_incrs = syncpt.incrs;
400 job->syncpt_id = syncpt.id;
401 job->timeout = 10000;
402
403 if (args->timeout && args->timeout < 10000)
404 job->timeout = args->timeout;
405
406 err = host1x_job_pin(job, context->client->base.dev);
407 if (err)
408 goto fail;
409
410 err = host1x_job_submit(job);
411 if (err)
412 goto fail_submit;
413
414 args->fence = job->syncpt_end;
415
416 host1x_job_put(job);
417 return 0;
418
419fail_submit:
420 host1x_job_unpin(job);
421fail:
422 host1x_job_put(job);
423 return err;
424}
425
426
427#ifdef CONFIG_DRM_TEGRA_STAGING
428static struct tegra_drm_context *tegra_drm_get_context(__u64 context)
429{
430 return (struct tegra_drm_context *)(uintptr_t)context;
431}
432
433static bool tegra_drm_file_owns_context(struct tegra_drm_file *file,
434 struct tegra_drm_context *context)
435{
436 struct tegra_drm_context *ctx;
437
438 list_for_each_entry(ctx, &file->contexts, list)
439 if (ctx == context)
440 return true;
441
442 return false;
443}
444
445static int tegra_gem_create(struct drm_device *drm, void *data,
446 struct drm_file *file)
447{
448 struct drm_tegra_gem_create *args = data;
449 struct tegra_bo *bo;
450
451 bo = tegra_bo_create_with_handle(file, drm, args->size, args->flags,
452 &args->handle);
453 if (IS_ERR(bo))
454 return PTR_ERR(bo);
455
456 return 0;
457}
458
459static int tegra_gem_mmap(struct drm_device *drm, void *data,
460 struct drm_file *file)
461{
462 struct drm_tegra_gem_mmap *args = data;
463 struct drm_gem_object *gem;
464 struct tegra_bo *bo;
465
466 gem = drm_gem_object_lookup(drm, file, args->handle);
467 if (!gem)
468 return -EINVAL;
469
470 bo = to_tegra_bo(gem);
471
472 args->offset = drm_vma_node_offset_addr(&bo->gem.vma_node);
473
474 drm_gem_object_unreference_unlocked(gem);
475
476 return 0;
477}
478
479static int tegra_syncpt_read(struct drm_device *drm, void *data,
480 struct drm_file *file)
481{
482 struct host1x *host = dev_get_drvdata(drm->dev->parent);
483 struct drm_tegra_syncpt_read *args = data;
484 struct host1x_syncpt *sp;
485
486 sp = host1x_syncpt_get(host, args->id);
487 if (!sp)
488 return -EINVAL;
489
490 args->value = host1x_syncpt_read_min(sp);
491 return 0;
492}
493
494static int tegra_syncpt_incr(struct drm_device *drm, void *data,
495 struct drm_file *file)
496{
497 struct host1x *host1x = dev_get_drvdata(drm->dev->parent);
498 struct drm_tegra_syncpt_incr *args = data;
499 struct host1x_syncpt *sp;
500
501 sp = host1x_syncpt_get(host1x, args->id);
502 if (!sp)
503 return -EINVAL;
504
505 return host1x_syncpt_incr(sp);
506}
507
508static int tegra_syncpt_wait(struct drm_device *drm, void *data,
509 struct drm_file *file)
510{
511 struct host1x *host1x = dev_get_drvdata(drm->dev->parent);
512 struct drm_tegra_syncpt_wait *args = data;
513 struct host1x_syncpt *sp;
514
515 sp = host1x_syncpt_get(host1x, args->id);
516 if (!sp)
517 return -EINVAL;
518
519 return host1x_syncpt_wait(sp, args->thresh, args->timeout,
520 &args->value);
521}
522
523static int tegra_open_channel(struct drm_device *drm, void *data,
524 struct drm_file *file)
525{
526 struct tegra_drm_file *fpriv = file->driver_priv;
527 struct tegra_drm *tegra = drm->dev_private;
528 struct drm_tegra_open_channel *args = data;
529 struct tegra_drm_context *context;
530 struct tegra_drm_client *client;
531 int err = -ENODEV;
532
533 context = kzalloc(sizeof(*context), GFP_KERNEL);
534 if (!context)
535 return -ENOMEM;
536
537 list_for_each_entry(client, &tegra->clients, list)
538 if (client->base.class == args->client) {
539 err = client->ops->open_channel(client, context);
540 if (err)
541 break;
542
543 list_add(&context->list, &fpriv->contexts);
544 args->context = (uintptr_t)context;
545 context->client = client;
546 return 0;
547 }
548
549 kfree(context);
550 return err;
551}
552
553static int tegra_close_channel(struct drm_device *drm, void *data,
554 struct drm_file *file)
555{
556 struct tegra_drm_file *fpriv = file->driver_priv;
557 struct drm_tegra_close_channel *args = data;
558 struct tegra_drm_context *context;
559
560 context = tegra_drm_get_context(args->context);
561
562 if (!tegra_drm_file_owns_context(fpriv, context))
563 return -EINVAL;
564
565 list_del(&context->list);
566 tegra_drm_context_free(context);
567
568 return 0;
569}
570
571static int tegra_get_syncpt(struct drm_device *drm, void *data,
572 struct drm_file *file)
573{
574 struct tegra_drm_file *fpriv = file->driver_priv;
575 struct drm_tegra_get_syncpt *args = data;
576 struct tegra_drm_context *context;
577 struct host1x_syncpt *syncpt;
578
579 context = tegra_drm_get_context(args->context);
580
581 if (!tegra_drm_file_owns_context(fpriv, context))
582 return -ENODEV;
583
584 if (args->index >= context->client->base.num_syncpts)
585 return -EINVAL;
586
587 syncpt = context->client->base.syncpts[args->index];
588 args->id = host1x_syncpt_id(syncpt);
589
590 return 0;
591}
592
593static int tegra_submit(struct drm_device *drm, void *data,
594 struct drm_file *file)
595{
596 struct tegra_drm_file *fpriv = file->driver_priv;
597 struct drm_tegra_submit *args = data;
598 struct tegra_drm_context *context;
599
600 context = tegra_drm_get_context(args->context);
601
602 if (!tegra_drm_file_owns_context(fpriv, context))
603 return -ENODEV;
604
605 return context->client->ops->submit(context, args, drm, file);
606}
607
608static int tegra_get_syncpt_base(struct drm_device *drm, void *data,
609 struct drm_file *file)
610{
611 struct tegra_drm_file *fpriv = file->driver_priv;
612 struct drm_tegra_get_syncpt_base *args = data;
613 struct tegra_drm_context *context;
614 struct host1x_syncpt_base *base;
615 struct host1x_syncpt *syncpt;
616
617 context = tegra_drm_get_context(args->context);
618
619 if (!tegra_drm_file_owns_context(fpriv, context))
620 return -ENODEV;
621
622 if (args->syncpt >= context->client->base.num_syncpts)
623 return -EINVAL;
624
625 syncpt = context->client->base.syncpts[args->syncpt];
626
627 base = host1x_syncpt_get_base(syncpt);
628 if (!base)
629 return -ENXIO;
630
631 args->id = host1x_syncpt_base_id(base);
632
633 return 0;
634}
635
636static int tegra_gem_set_tiling(struct drm_device *drm, void *data,
637 struct drm_file *file)
638{
639 struct drm_tegra_gem_set_tiling *args = data;
640 enum tegra_bo_tiling_mode mode;
641 struct drm_gem_object *gem;
642 unsigned long value = 0;
643 struct tegra_bo *bo;
644
645 switch (args->mode) {
646 case DRM_TEGRA_GEM_TILING_MODE_PITCH:
647 mode = TEGRA_BO_TILING_MODE_PITCH;
648
649 if (args->value != 0)
650 return -EINVAL;
651
652 break;
653
654 case DRM_TEGRA_GEM_TILING_MODE_TILED:
655 mode = TEGRA_BO_TILING_MODE_TILED;
656
657 if (args->value != 0)
658 return -EINVAL;
659
660 break;
661
662 case DRM_TEGRA_GEM_TILING_MODE_BLOCK:
663 mode = TEGRA_BO_TILING_MODE_BLOCK;
664
665 if (args->value > 5)
666 return -EINVAL;
667
668 value = args->value;
669 break;
670
671 default:
672 return -EINVAL;
673 }
674
675 gem = drm_gem_object_lookup(drm, file, args->handle);
676 if (!gem)
677 return -ENOENT;
678
679 bo = to_tegra_bo(gem);
680
681 bo->tiling.mode = mode;
682 bo->tiling.value = value;
683
684 drm_gem_object_unreference_unlocked(gem);
685
686 return 0;
687}
688
689static int tegra_gem_get_tiling(struct drm_device *drm, void *data,
690 struct drm_file *file)
691{
692 struct drm_tegra_gem_get_tiling *args = data;
693 struct drm_gem_object *gem;
694 struct tegra_bo *bo;
695 int err = 0;
696
697 gem = drm_gem_object_lookup(drm, file, args->handle);
698 if (!gem)
699 return -ENOENT;
700
701 bo = to_tegra_bo(gem);
702
703 switch (bo->tiling.mode) {
704 case TEGRA_BO_TILING_MODE_PITCH:
705 args->mode = DRM_TEGRA_GEM_TILING_MODE_PITCH;
706 args->value = 0;
707 break;
708
709 case TEGRA_BO_TILING_MODE_TILED:
710 args->mode = DRM_TEGRA_GEM_TILING_MODE_TILED;
711 args->value = 0;
712 break;
713
714 case TEGRA_BO_TILING_MODE_BLOCK:
715 args->mode = DRM_TEGRA_GEM_TILING_MODE_BLOCK;
716 args->value = bo->tiling.value;
717 break;
718
719 default:
720 err = -EINVAL;
721 break;
722 }
723
724 drm_gem_object_unreference_unlocked(gem);
725
726 return err;
727}
728
729static int tegra_gem_set_flags(struct drm_device *drm, void *data,
730 struct drm_file *file)
731{
732 struct drm_tegra_gem_set_flags *args = data;
733 struct drm_gem_object *gem;
734 struct tegra_bo *bo;
735
736 if (args->flags & ~DRM_TEGRA_GEM_FLAGS)
737 return -EINVAL;
738
739 gem = drm_gem_object_lookup(drm, file, args->handle);
740 if (!gem)
741 return -ENOENT;
742
743 bo = to_tegra_bo(gem);
744 bo->flags = 0;
745
746 if (args->flags & DRM_TEGRA_GEM_BOTTOM_UP)
747 bo->flags |= TEGRA_BO_BOTTOM_UP;
748
749 drm_gem_object_unreference_unlocked(gem);
750
751 return 0;
752}
753
754static int tegra_gem_get_flags(struct drm_device *drm, void *data,
755 struct drm_file *file)
756{
757 struct drm_tegra_gem_get_flags *args = data;
758 struct drm_gem_object *gem;
759 struct tegra_bo *bo;
760
761 gem = drm_gem_object_lookup(drm, file, args->handle);
762 if (!gem)
763 return -ENOENT;
764
765 bo = to_tegra_bo(gem);
766 args->flags = 0;
767
768 if (bo->flags & TEGRA_BO_BOTTOM_UP)
769 args->flags |= DRM_TEGRA_GEM_BOTTOM_UP;
770
771 drm_gem_object_unreference_unlocked(gem);
772
773 return 0;
774}
775#endif
776
777static const struct drm_ioctl_desc tegra_drm_ioctls[] = {
778#ifdef CONFIG_DRM_TEGRA_STAGING
779 DRM_IOCTL_DEF_DRV(TEGRA_GEM_CREATE, tegra_gem_create, 0),
780 DRM_IOCTL_DEF_DRV(TEGRA_GEM_MMAP, tegra_gem_mmap, 0),
781 DRM_IOCTL_DEF_DRV(TEGRA_SYNCPT_READ, tegra_syncpt_read, 0),
782 DRM_IOCTL_DEF_DRV(TEGRA_SYNCPT_INCR, tegra_syncpt_incr, 0),
783 DRM_IOCTL_DEF_DRV(TEGRA_SYNCPT_WAIT, tegra_syncpt_wait, 0),
784 DRM_IOCTL_DEF_DRV(TEGRA_OPEN_CHANNEL, tegra_open_channel, 0),
785 DRM_IOCTL_DEF_DRV(TEGRA_CLOSE_CHANNEL, tegra_close_channel, 0),
786 DRM_IOCTL_DEF_DRV(TEGRA_GET_SYNCPT, tegra_get_syncpt, 0),
787 DRM_IOCTL_DEF_DRV(TEGRA_SUBMIT, tegra_submit, 0),
788 DRM_IOCTL_DEF_DRV(TEGRA_GET_SYNCPT_BASE, tegra_get_syncpt_base, 0),
789 DRM_IOCTL_DEF_DRV(TEGRA_GEM_SET_TILING, tegra_gem_set_tiling, 0),
790 DRM_IOCTL_DEF_DRV(TEGRA_GEM_GET_TILING, tegra_gem_get_tiling, 0),
791 DRM_IOCTL_DEF_DRV(TEGRA_GEM_SET_FLAGS, tegra_gem_set_flags, 0),
792 DRM_IOCTL_DEF_DRV(TEGRA_GEM_GET_FLAGS, tegra_gem_get_flags, 0),
793#endif
794};
795
796static const struct file_operations tegra_drm_fops = {
797 .owner = THIS_MODULE,
798 .open = drm_open,
799 .release = drm_release,
800 .unlocked_ioctl = drm_ioctl,
801 .mmap = tegra_drm_mmap,
802 .poll = drm_poll,
803 .read = drm_read,
804#ifdef CONFIG_COMPAT
805 .compat_ioctl = drm_compat_ioctl,
806#endif
807 .llseek = noop_llseek,
808};
809
810static struct drm_crtc *tegra_crtc_from_pipe(struct drm_device *drm,
811 unsigned int pipe)
812{
813 struct drm_crtc *crtc;
814
815 list_for_each_entry(crtc, &drm->mode_config.crtc_list, head) {
816 if (pipe == drm_crtc_index(crtc))
817 return crtc;
818 }
819
820 return NULL;
821}
822
823static u32 tegra_drm_get_vblank_counter(struct drm_device *drm,
824 unsigned int pipe)
825{
826 struct drm_crtc *crtc = tegra_crtc_from_pipe(drm, pipe);
827 struct tegra_dc *dc = to_tegra_dc(crtc);
828
829 if (!crtc)
830 return 0;
831
832 return tegra_dc_get_vblank_counter(dc);
833}
834
835static int tegra_drm_enable_vblank(struct drm_device *drm, unsigned int pipe)
836{
837 struct drm_crtc *crtc = tegra_crtc_from_pipe(drm, pipe);
838 struct tegra_dc *dc = to_tegra_dc(crtc);
839
840 if (!crtc)
841 return -ENODEV;
842
843 tegra_dc_enable_vblank(dc);
844
845 return 0;
846}
847
848static void tegra_drm_disable_vblank(struct drm_device *drm, unsigned int pipe)
849{
850 struct drm_crtc *crtc = tegra_crtc_from_pipe(drm, pipe);
851 struct tegra_dc *dc = to_tegra_dc(crtc);
852
853 if (crtc)
854 tegra_dc_disable_vblank(dc);
855}
856
857static void tegra_drm_preclose(struct drm_device *drm, struct drm_file *file)
858{
859 struct tegra_drm_file *fpriv = file->driver_priv;
860 struct tegra_drm_context *context, *tmp;
861
862 list_for_each_entry_safe(context, tmp, &fpriv->contexts, list)
863 tegra_drm_context_free(context);
864
865 kfree(fpriv);
866}
867
868#ifdef CONFIG_DEBUG_FS
869static int tegra_debugfs_framebuffers(struct seq_file *s, void *data)
870{
871 struct drm_info_node *node = (struct drm_info_node *)s->private;
872 struct drm_device *drm = node->minor->dev;
873 struct drm_framebuffer *fb;
874
875 mutex_lock(&drm->mode_config.fb_lock);
876
877 list_for_each_entry(fb, &drm->mode_config.fb_list, head) {
878 seq_printf(s, "%3d: user size: %d x %d, depth %d, %d bpp, refcount %d\n",
879 fb->base.id, fb->width, fb->height, fb->depth,
880 fb->bits_per_pixel,
881 atomic_read(&fb->refcount.refcount));
882 }
883
884 mutex_unlock(&drm->mode_config.fb_lock);
885
886 return 0;
887}
888
889static int tegra_debugfs_iova(struct seq_file *s, void *data)
890{
891 struct drm_info_node *node = (struct drm_info_node *)s->private;
892 struct drm_device *drm = node->minor->dev;
893 struct tegra_drm *tegra = drm->dev_private;
894
895 return drm_mm_dump_table(s, &tegra->mm);
896}
897
898static struct drm_info_list tegra_debugfs_list[] = {
899 { "framebuffers", tegra_debugfs_framebuffers, 0 },
900 { "iova", tegra_debugfs_iova, 0 },
901};
902
903static int tegra_debugfs_init(struct drm_minor *minor)
904{
905 return drm_debugfs_create_files(tegra_debugfs_list,
906 ARRAY_SIZE(tegra_debugfs_list),
907 minor->debugfs_root, minor);
908}
909
910static void tegra_debugfs_cleanup(struct drm_minor *minor)
911{
912 drm_debugfs_remove_files(tegra_debugfs_list,
913 ARRAY_SIZE(tegra_debugfs_list), minor);
914}
915#endif
916
917static struct drm_driver tegra_drm_driver = {
918 .driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME |
919 DRIVER_ATOMIC,
920 .load = tegra_drm_load,
921 .unload = tegra_drm_unload,
922 .open = tegra_drm_open,
923 .preclose = tegra_drm_preclose,
924 .lastclose = tegra_drm_lastclose,
925
926 .get_vblank_counter = tegra_drm_get_vblank_counter,
927 .enable_vblank = tegra_drm_enable_vblank,
928 .disable_vblank = tegra_drm_disable_vblank,
929
930#if defined(CONFIG_DEBUG_FS)
931 .debugfs_init = tegra_debugfs_init,
932 .debugfs_cleanup = tegra_debugfs_cleanup,
933#endif
934
935 .gem_free_object = tegra_bo_free_object,
936 .gem_vm_ops = &tegra_bo_vm_ops,
937
938 .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
939 .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
940 .gem_prime_export = tegra_gem_prime_export,
941 .gem_prime_import = tegra_gem_prime_import,
942
943 .dumb_create = tegra_bo_dumb_create,
944 .dumb_map_offset = tegra_bo_dumb_map_offset,
945 .dumb_destroy = drm_gem_dumb_destroy,
946
947 .ioctls = tegra_drm_ioctls,
948 .num_ioctls = ARRAY_SIZE(tegra_drm_ioctls),
949 .fops = &tegra_drm_fops,
950
951 .name = DRIVER_NAME,
952 .desc = DRIVER_DESC,
953 .date = DRIVER_DATE,
954 .major = DRIVER_MAJOR,
955 .minor = DRIVER_MINOR,
956 .patchlevel = DRIVER_PATCHLEVEL,
957};
958
959int tegra_drm_register_client(struct tegra_drm *tegra,
960 struct tegra_drm_client *client)
961{
962 mutex_lock(&tegra->clients_lock);
963 list_add_tail(&client->list, &tegra->clients);
964 mutex_unlock(&tegra->clients_lock);
965
966 return 0;
967}
968
969int tegra_drm_unregister_client(struct tegra_drm *tegra,
970 struct tegra_drm_client *client)
971{
972 mutex_lock(&tegra->clients_lock);
973 list_del_init(&client->list);
974 mutex_unlock(&tegra->clients_lock);
975
976 return 0;
977}
978
979static int host1x_drm_probe(struct host1x_device *dev)
980{
981 struct drm_driver *driver = &tegra_drm_driver;
982 struct drm_device *drm;
983 int err;
984
985 drm = drm_dev_alloc(driver, &dev->dev);
986 if (!drm)
987 return -ENOMEM;
988
989 dev_set_drvdata(&dev->dev, drm);
990
991 err = drm_dev_register(drm, 0);
992 if (err < 0)
993 goto unref;
994
995 DRM_INFO("Initialized %s %d.%d.%d %s on minor %d\n", driver->name,
996 driver->major, driver->minor, driver->patchlevel,
997 driver->date, drm->primary->index);
998
999 return 0;
1000
1001unref:
1002 drm_dev_unref(drm);
1003 return err;
1004}
1005
1006static int host1x_drm_remove(struct host1x_device *dev)
1007{
1008 struct drm_device *drm = dev_get_drvdata(&dev->dev);
1009
1010 drm_dev_unregister(drm);
1011 drm_dev_unref(drm);
1012
1013 return 0;
1014}
1015
1016#ifdef CONFIG_PM_SLEEP
1017static int host1x_drm_suspend(struct device *dev)
1018{
1019 struct drm_device *drm = dev_get_drvdata(dev);
1020 struct tegra_drm *tegra = drm->dev_private;
1021
1022 drm_kms_helper_poll_disable(drm);
1023 tegra_drm_fb_suspend(drm);
1024
1025 tegra->state = drm_atomic_helper_suspend(drm);
1026 if (IS_ERR(tegra->state)) {
1027 tegra_drm_fb_resume(drm);
1028 drm_kms_helper_poll_enable(drm);
1029 return PTR_ERR(tegra->state);
1030 }
1031
1032 return 0;
1033}
1034
1035static int host1x_drm_resume(struct device *dev)
1036{
1037 struct drm_device *drm = dev_get_drvdata(dev);
1038 struct tegra_drm *tegra = drm->dev_private;
1039
1040 drm_atomic_helper_resume(drm, tegra->state);
1041 tegra_drm_fb_resume(drm);
1042 drm_kms_helper_poll_enable(drm);
1043
1044 return 0;
1045}
1046#endif
1047
1048static SIMPLE_DEV_PM_OPS(host1x_drm_pm_ops, host1x_drm_suspend,
1049 host1x_drm_resume);
1050
1051static const struct of_device_id host1x_drm_subdevs[] = {
1052 { .compatible = "nvidia,tegra20-dc", },
1053 { .compatible = "nvidia,tegra20-hdmi", },
1054 { .compatible = "nvidia,tegra20-gr2d", },
1055 { .compatible = "nvidia,tegra20-gr3d", },
1056 { .compatible = "nvidia,tegra30-dc", },
1057 { .compatible = "nvidia,tegra30-hdmi", },
1058 { .compatible = "nvidia,tegra30-gr2d", },
1059 { .compatible = "nvidia,tegra30-gr3d", },
1060 { .compatible = "nvidia,tegra114-dsi", },
1061 { .compatible = "nvidia,tegra114-hdmi", },
1062 { .compatible = "nvidia,tegra114-gr3d", },
1063 { .compatible = "nvidia,tegra124-dc", },
1064 { .compatible = "nvidia,tegra124-sor", },
1065 { .compatible = "nvidia,tegra124-hdmi", },
1066 { .compatible = "nvidia,tegra124-dsi", },
1067 { .compatible = "nvidia,tegra132-dsi", },
1068 { .compatible = "nvidia,tegra210-dc", },
1069 { .compatible = "nvidia,tegra210-dsi", },
1070 { .compatible = "nvidia,tegra210-sor", },
1071 { .compatible = "nvidia,tegra210-sor1", },
1072 { /* sentinel */ }
1073};
1074
1075static struct host1x_driver host1x_drm_driver = {
1076 .driver = {
1077 .name = "drm",
1078 .pm = &host1x_drm_pm_ops,
1079 },
1080 .probe = host1x_drm_probe,
1081 .remove = host1x_drm_remove,
1082 .subdevs = host1x_drm_subdevs,
1083};
1084
1085static struct platform_driver * const drivers[] = {
1086 &tegra_dc_driver,
1087 &tegra_hdmi_driver,
1088 &tegra_dsi_driver,
1089 &tegra_dpaux_driver,
1090 &tegra_sor_driver,
1091 &tegra_gr2d_driver,
1092 &tegra_gr3d_driver,
1093};
1094
1095static int __init host1x_drm_init(void)
1096{
1097 int err;
1098
1099 err = host1x_driver_register(&host1x_drm_driver);
1100 if (err < 0)
1101 return err;
1102
1103 err = platform_register_drivers(drivers, ARRAY_SIZE(drivers));
1104 if (err < 0)
1105 goto unregister_host1x;
1106
1107 return 0;
1108
1109unregister_host1x:
1110 host1x_driver_unregister(&host1x_drm_driver);
1111 return err;
1112}
1113module_init(host1x_drm_init);
1114
1115static void __exit host1x_drm_exit(void)
1116{
1117 platform_unregister_drivers(drivers, ARRAY_SIZE(drivers));
1118 host1x_driver_unregister(&host1x_drm_driver);
1119}
1120module_exit(host1x_drm_exit);
1121
1122MODULE_AUTHOR("Thierry Reding <thierry.reding@avionic-design.de>");
1123MODULE_DESCRIPTION("NVIDIA Tegra DRM driver");
1124MODULE_LICENSE("GPL v2");
1/*
2 * Copyright (C) 2012 Avionic Design GmbH
3 * Copyright (C) 2012-2013 NVIDIA CORPORATION. All rights reserved.
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
8 */
9
10#include <linux/host1x.h>
11#include <linux/iommu.h>
12
13#include <drm/drm_atomic.h>
14#include <drm/drm_atomic_helper.h>
15
16#include "drm.h"
17#include "gem.h"
18
19#define DRIVER_NAME "tegra"
20#define DRIVER_DESC "NVIDIA Tegra graphics"
21#define DRIVER_DATE "20120330"
22#define DRIVER_MAJOR 0
23#define DRIVER_MINOR 0
24#define DRIVER_PATCHLEVEL 0
25
26struct tegra_drm_file {
27 struct list_head contexts;
28};
29
30static void tegra_atomic_schedule(struct tegra_drm *tegra,
31 struct drm_atomic_state *state)
32{
33 tegra->commit.state = state;
34 schedule_work(&tegra->commit.work);
35}
36
37static void tegra_atomic_complete(struct tegra_drm *tegra,
38 struct drm_atomic_state *state)
39{
40 struct drm_device *drm = tegra->drm;
41
42 /*
43 * Everything below can be run asynchronously without the need to grab
44 * any modeset locks at all under one condition: It must be guaranteed
45 * that the asynchronous work has either been cancelled (if the driver
46 * supports it, which at least requires that the framebuffers get
47 * cleaned up with drm_atomic_helper_cleanup_planes()) or completed
48 * before the new state gets committed on the software side with
49 * drm_atomic_helper_swap_state().
50 *
51 * This scheme allows new atomic state updates to be prepared and
52 * checked in parallel to the asynchronous completion of the previous
53 * update. Which is important since compositors need to figure out the
54 * composition of the next frame right after having submitted the
55 * current layout.
56 */
57
58 drm_atomic_helper_commit_modeset_disables(drm, state);
59 drm_atomic_helper_commit_modeset_enables(drm, state);
60 drm_atomic_helper_commit_planes(drm, state,
61 DRM_PLANE_COMMIT_ACTIVE_ONLY);
62
63 drm_atomic_helper_wait_for_vblanks(drm, state);
64
65 drm_atomic_helper_cleanup_planes(drm, state);
66 drm_atomic_state_put(state);
67}
68
69static void tegra_atomic_work(struct work_struct *work)
70{
71 struct tegra_drm *tegra = container_of(work, struct tegra_drm,
72 commit.work);
73
74 tegra_atomic_complete(tegra, tegra->commit.state);
75}
76
77static int tegra_atomic_commit(struct drm_device *drm,
78 struct drm_atomic_state *state, bool nonblock)
79{
80 struct tegra_drm *tegra = drm->dev_private;
81 int err;
82
83 err = drm_atomic_helper_prepare_planes(drm, state);
84 if (err)
85 return err;
86
87 /* serialize outstanding nonblocking commits */
88 mutex_lock(&tegra->commit.lock);
89 flush_work(&tegra->commit.work);
90
91 /*
92 * This is the point of no return - everything below never fails except
93 * when the hw goes bonghits. Which means we can commit the new state on
94 * the software side now.
95 */
96
97 drm_atomic_helper_swap_state(state, true);
98
99 drm_atomic_state_get(state);
100 if (nonblock)
101 tegra_atomic_schedule(tegra, state);
102 else
103 tegra_atomic_complete(tegra, state);
104
105 mutex_unlock(&tegra->commit.lock);
106 return 0;
107}
108
109static const struct drm_mode_config_funcs tegra_drm_mode_funcs = {
110 .fb_create = tegra_fb_create,
111#ifdef CONFIG_DRM_FBDEV_EMULATION
112 .output_poll_changed = tegra_fb_output_poll_changed,
113#endif
114 .atomic_check = drm_atomic_helper_check,
115 .atomic_commit = tegra_atomic_commit,
116};
117
118static int tegra_drm_load(struct drm_device *drm, unsigned long flags)
119{
120 struct host1x_device *device = to_host1x_device(drm->dev);
121 struct tegra_drm *tegra;
122 int err;
123
124 tegra = kzalloc(sizeof(*tegra), GFP_KERNEL);
125 if (!tegra)
126 return -ENOMEM;
127
128 if (iommu_present(&platform_bus_type)) {
129 struct iommu_domain_geometry *geometry;
130 u64 start, end;
131
132 tegra->domain = iommu_domain_alloc(&platform_bus_type);
133 if (!tegra->domain) {
134 err = -ENOMEM;
135 goto free;
136 }
137
138 geometry = &tegra->domain->geometry;
139 start = geometry->aperture_start;
140 end = geometry->aperture_end;
141
142 DRM_DEBUG_DRIVER("IOMMU aperture initialized (%#llx-%#llx)\n",
143 start, end);
144 drm_mm_init(&tegra->mm, start, end - start + 1);
145 }
146
147 mutex_init(&tegra->clients_lock);
148 INIT_LIST_HEAD(&tegra->clients);
149
150 mutex_init(&tegra->commit.lock);
151 INIT_WORK(&tegra->commit.work, tegra_atomic_work);
152
153 drm->dev_private = tegra;
154 tegra->drm = drm;
155
156 drm_mode_config_init(drm);
157
158 drm->mode_config.min_width = 0;
159 drm->mode_config.min_height = 0;
160
161 drm->mode_config.max_width = 4096;
162 drm->mode_config.max_height = 4096;
163
164 drm->mode_config.funcs = &tegra_drm_mode_funcs;
165
166 err = tegra_drm_fb_prepare(drm);
167 if (err < 0)
168 goto config;
169
170 drm_kms_helper_poll_init(drm);
171
172 err = host1x_device_init(device);
173 if (err < 0)
174 goto fbdev;
175
176 /*
177 * We don't use the drm_irq_install() helpers provided by the DRM
178 * core, so we need to set this manually in order to allow the
179 * DRM_IOCTL_WAIT_VBLANK to operate correctly.
180 */
181 drm->irq_enabled = true;
182
183 /* syncpoints are used for full 32-bit hardware VBLANK counters */
184 drm->max_vblank_count = 0xffffffff;
185
186 err = drm_vblank_init(drm, drm->mode_config.num_crtc);
187 if (err < 0)
188 goto device;
189
190 drm_mode_config_reset(drm);
191
192 err = tegra_drm_fb_init(drm);
193 if (err < 0)
194 goto vblank;
195
196 return 0;
197
198vblank:
199 drm_vblank_cleanup(drm);
200device:
201 host1x_device_exit(device);
202fbdev:
203 drm_kms_helper_poll_fini(drm);
204 tegra_drm_fb_free(drm);
205config:
206 drm_mode_config_cleanup(drm);
207
208 if (tegra->domain) {
209 iommu_domain_free(tegra->domain);
210 drm_mm_takedown(&tegra->mm);
211 }
212free:
213 kfree(tegra);
214 return err;
215}
216
217static int tegra_drm_unload(struct drm_device *drm)
218{
219 struct host1x_device *device = to_host1x_device(drm->dev);
220 struct tegra_drm *tegra = drm->dev_private;
221 int err;
222
223 drm_kms_helper_poll_fini(drm);
224 tegra_drm_fb_exit(drm);
225 drm_mode_config_cleanup(drm);
226 drm_vblank_cleanup(drm);
227
228 err = host1x_device_exit(device);
229 if (err < 0)
230 return err;
231
232 if (tegra->domain) {
233 iommu_domain_free(tegra->domain);
234 drm_mm_takedown(&tegra->mm);
235 }
236
237 kfree(tegra);
238
239 return 0;
240}
241
242static int tegra_drm_open(struct drm_device *drm, struct drm_file *filp)
243{
244 struct tegra_drm_file *fpriv;
245
246 fpriv = kzalloc(sizeof(*fpriv), GFP_KERNEL);
247 if (!fpriv)
248 return -ENOMEM;
249
250 INIT_LIST_HEAD(&fpriv->contexts);
251 filp->driver_priv = fpriv;
252
253 return 0;
254}
255
256static void tegra_drm_context_free(struct tegra_drm_context *context)
257{
258 context->client->ops->close_channel(context);
259 kfree(context);
260}
261
262static void tegra_drm_lastclose(struct drm_device *drm)
263{
264#ifdef CONFIG_DRM_FBDEV_EMULATION
265 struct tegra_drm *tegra = drm->dev_private;
266
267 tegra_fbdev_restore_mode(tegra->fbdev);
268#endif
269}
270
271static struct host1x_bo *
272host1x_bo_lookup(struct drm_file *file, u32 handle)
273{
274 struct drm_gem_object *gem;
275 struct tegra_bo *bo;
276
277 gem = drm_gem_object_lookup(file, handle);
278 if (!gem)
279 return NULL;
280
281 drm_gem_object_unreference_unlocked(gem);
282
283 bo = to_tegra_bo(gem);
284 return &bo->base;
285}
286
287static int host1x_reloc_copy_from_user(struct host1x_reloc *dest,
288 struct drm_tegra_reloc __user *src,
289 struct drm_device *drm,
290 struct drm_file *file)
291{
292 u32 cmdbuf, target;
293 int err;
294
295 err = get_user(cmdbuf, &src->cmdbuf.handle);
296 if (err < 0)
297 return err;
298
299 err = get_user(dest->cmdbuf.offset, &src->cmdbuf.offset);
300 if (err < 0)
301 return err;
302
303 err = get_user(target, &src->target.handle);
304 if (err < 0)
305 return err;
306
307 err = get_user(dest->target.offset, &src->target.offset);
308 if (err < 0)
309 return err;
310
311 err = get_user(dest->shift, &src->shift);
312 if (err < 0)
313 return err;
314
315 dest->cmdbuf.bo = host1x_bo_lookup(file, cmdbuf);
316 if (!dest->cmdbuf.bo)
317 return -ENOENT;
318
319 dest->target.bo = host1x_bo_lookup(file, target);
320 if (!dest->target.bo)
321 return -ENOENT;
322
323 return 0;
324}
325
326int tegra_drm_submit(struct tegra_drm_context *context,
327 struct drm_tegra_submit *args, struct drm_device *drm,
328 struct drm_file *file)
329{
330 unsigned int num_cmdbufs = args->num_cmdbufs;
331 unsigned int num_relocs = args->num_relocs;
332 unsigned int num_waitchks = args->num_waitchks;
333 struct drm_tegra_cmdbuf __user *cmdbufs =
334 (void __user *)(uintptr_t)args->cmdbufs;
335 struct drm_tegra_reloc __user *relocs =
336 (void __user *)(uintptr_t)args->relocs;
337 struct drm_tegra_waitchk __user *waitchks =
338 (void __user *)(uintptr_t)args->waitchks;
339 struct drm_tegra_syncpt syncpt;
340 struct host1x_job *job;
341 int err;
342
343 /* We don't yet support other than one syncpt_incr struct per submit */
344 if (args->num_syncpts != 1)
345 return -EINVAL;
346
347 job = host1x_job_alloc(context->channel, args->num_cmdbufs,
348 args->num_relocs, args->num_waitchks);
349 if (!job)
350 return -ENOMEM;
351
352 job->num_relocs = args->num_relocs;
353 job->num_waitchk = args->num_waitchks;
354 job->client = (u32)args->context;
355 job->class = context->client->base.class;
356 job->serialize = true;
357
358 while (num_cmdbufs) {
359 struct drm_tegra_cmdbuf cmdbuf;
360 struct host1x_bo *bo;
361
362 if (copy_from_user(&cmdbuf, cmdbufs, sizeof(cmdbuf))) {
363 err = -EFAULT;
364 goto fail;
365 }
366
367 bo = host1x_bo_lookup(file, cmdbuf.handle);
368 if (!bo) {
369 err = -ENOENT;
370 goto fail;
371 }
372
373 host1x_job_add_gather(job, bo, cmdbuf.words, cmdbuf.offset);
374 num_cmdbufs--;
375 cmdbufs++;
376 }
377
378 /* copy and resolve relocations from submit */
379 while (num_relocs--) {
380 err = host1x_reloc_copy_from_user(&job->relocarray[num_relocs],
381 &relocs[num_relocs], drm,
382 file);
383 if (err < 0)
384 goto fail;
385 }
386
387 if (copy_from_user(job->waitchk, waitchks,
388 sizeof(*waitchks) * num_waitchks)) {
389 err = -EFAULT;
390 goto fail;
391 }
392
393 if (copy_from_user(&syncpt, (void __user *)(uintptr_t)args->syncpts,
394 sizeof(syncpt))) {
395 err = -EFAULT;
396 goto fail;
397 }
398
399 job->is_addr_reg = context->client->ops->is_addr_reg;
400 job->syncpt_incrs = syncpt.incrs;
401 job->syncpt_id = syncpt.id;
402 job->timeout = 10000;
403
404 if (args->timeout && args->timeout < 10000)
405 job->timeout = args->timeout;
406
407 err = host1x_job_pin(job, context->client->base.dev);
408 if (err)
409 goto fail;
410
411 err = host1x_job_submit(job);
412 if (err)
413 goto fail_submit;
414
415 args->fence = job->syncpt_end;
416
417 host1x_job_put(job);
418 return 0;
419
420fail_submit:
421 host1x_job_unpin(job);
422fail:
423 host1x_job_put(job);
424 return err;
425}
426
427
428#ifdef CONFIG_DRM_TEGRA_STAGING
429static struct tegra_drm_context *tegra_drm_get_context(__u64 context)
430{
431 return (struct tegra_drm_context *)(uintptr_t)context;
432}
433
434static bool tegra_drm_file_owns_context(struct tegra_drm_file *file,
435 struct tegra_drm_context *context)
436{
437 struct tegra_drm_context *ctx;
438
439 list_for_each_entry(ctx, &file->contexts, list)
440 if (ctx == context)
441 return true;
442
443 return false;
444}
445
446static int tegra_gem_create(struct drm_device *drm, void *data,
447 struct drm_file *file)
448{
449 struct drm_tegra_gem_create *args = data;
450 struct tegra_bo *bo;
451
452 bo = tegra_bo_create_with_handle(file, drm, args->size, args->flags,
453 &args->handle);
454 if (IS_ERR(bo))
455 return PTR_ERR(bo);
456
457 return 0;
458}
459
460static int tegra_gem_mmap(struct drm_device *drm, void *data,
461 struct drm_file *file)
462{
463 struct drm_tegra_gem_mmap *args = data;
464 struct drm_gem_object *gem;
465 struct tegra_bo *bo;
466
467 gem = drm_gem_object_lookup(file, args->handle);
468 if (!gem)
469 return -EINVAL;
470
471 bo = to_tegra_bo(gem);
472
473 args->offset = drm_vma_node_offset_addr(&bo->gem.vma_node);
474
475 drm_gem_object_unreference_unlocked(gem);
476
477 return 0;
478}
479
480static int tegra_syncpt_read(struct drm_device *drm, void *data,
481 struct drm_file *file)
482{
483 struct host1x *host = dev_get_drvdata(drm->dev->parent);
484 struct drm_tegra_syncpt_read *args = data;
485 struct host1x_syncpt *sp;
486
487 sp = host1x_syncpt_get(host, args->id);
488 if (!sp)
489 return -EINVAL;
490
491 args->value = host1x_syncpt_read_min(sp);
492 return 0;
493}
494
495static int tegra_syncpt_incr(struct drm_device *drm, void *data,
496 struct drm_file *file)
497{
498 struct host1x *host1x = dev_get_drvdata(drm->dev->parent);
499 struct drm_tegra_syncpt_incr *args = data;
500 struct host1x_syncpt *sp;
501
502 sp = host1x_syncpt_get(host1x, args->id);
503 if (!sp)
504 return -EINVAL;
505
506 return host1x_syncpt_incr(sp);
507}
508
509static int tegra_syncpt_wait(struct drm_device *drm, void *data,
510 struct drm_file *file)
511{
512 struct host1x *host1x = dev_get_drvdata(drm->dev->parent);
513 struct drm_tegra_syncpt_wait *args = data;
514 struct host1x_syncpt *sp;
515
516 sp = host1x_syncpt_get(host1x, args->id);
517 if (!sp)
518 return -EINVAL;
519
520 return host1x_syncpt_wait(sp, args->thresh, args->timeout,
521 &args->value);
522}
523
524static int tegra_open_channel(struct drm_device *drm, void *data,
525 struct drm_file *file)
526{
527 struct tegra_drm_file *fpriv = file->driver_priv;
528 struct tegra_drm *tegra = drm->dev_private;
529 struct drm_tegra_open_channel *args = data;
530 struct tegra_drm_context *context;
531 struct tegra_drm_client *client;
532 int err = -ENODEV;
533
534 context = kzalloc(sizeof(*context), GFP_KERNEL);
535 if (!context)
536 return -ENOMEM;
537
538 list_for_each_entry(client, &tegra->clients, list)
539 if (client->base.class == args->client) {
540 err = client->ops->open_channel(client, context);
541 if (err)
542 break;
543
544 list_add(&context->list, &fpriv->contexts);
545 args->context = (uintptr_t)context;
546 context->client = client;
547 return 0;
548 }
549
550 kfree(context);
551 return err;
552}
553
554static int tegra_close_channel(struct drm_device *drm, void *data,
555 struct drm_file *file)
556{
557 struct tegra_drm_file *fpriv = file->driver_priv;
558 struct drm_tegra_close_channel *args = data;
559 struct tegra_drm_context *context;
560
561 context = tegra_drm_get_context(args->context);
562
563 if (!tegra_drm_file_owns_context(fpriv, context))
564 return -EINVAL;
565
566 list_del(&context->list);
567 tegra_drm_context_free(context);
568
569 return 0;
570}
571
572static int tegra_get_syncpt(struct drm_device *drm, void *data,
573 struct drm_file *file)
574{
575 struct tegra_drm_file *fpriv = file->driver_priv;
576 struct drm_tegra_get_syncpt *args = data;
577 struct tegra_drm_context *context;
578 struct host1x_syncpt *syncpt;
579
580 context = tegra_drm_get_context(args->context);
581
582 if (!tegra_drm_file_owns_context(fpriv, context))
583 return -ENODEV;
584
585 if (args->index >= context->client->base.num_syncpts)
586 return -EINVAL;
587
588 syncpt = context->client->base.syncpts[args->index];
589 args->id = host1x_syncpt_id(syncpt);
590
591 return 0;
592}
593
594static int tegra_submit(struct drm_device *drm, void *data,
595 struct drm_file *file)
596{
597 struct tegra_drm_file *fpriv = file->driver_priv;
598 struct drm_tegra_submit *args = data;
599 struct tegra_drm_context *context;
600
601 context = tegra_drm_get_context(args->context);
602
603 if (!tegra_drm_file_owns_context(fpriv, context))
604 return -ENODEV;
605
606 return context->client->ops->submit(context, args, drm, file);
607}
608
609static int tegra_get_syncpt_base(struct drm_device *drm, void *data,
610 struct drm_file *file)
611{
612 struct tegra_drm_file *fpriv = file->driver_priv;
613 struct drm_tegra_get_syncpt_base *args = data;
614 struct tegra_drm_context *context;
615 struct host1x_syncpt_base *base;
616 struct host1x_syncpt *syncpt;
617
618 context = tegra_drm_get_context(args->context);
619
620 if (!tegra_drm_file_owns_context(fpriv, context))
621 return -ENODEV;
622
623 if (args->syncpt >= context->client->base.num_syncpts)
624 return -EINVAL;
625
626 syncpt = context->client->base.syncpts[args->syncpt];
627
628 base = host1x_syncpt_get_base(syncpt);
629 if (!base)
630 return -ENXIO;
631
632 args->id = host1x_syncpt_base_id(base);
633
634 return 0;
635}
636
637static int tegra_gem_set_tiling(struct drm_device *drm, void *data,
638 struct drm_file *file)
639{
640 struct drm_tegra_gem_set_tiling *args = data;
641 enum tegra_bo_tiling_mode mode;
642 struct drm_gem_object *gem;
643 unsigned long value = 0;
644 struct tegra_bo *bo;
645
646 switch (args->mode) {
647 case DRM_TEGRA_GEM_TILING_MODE_PITCH:
648 mode = TEGRA_BO_TILING_MODE_PITCH;
649
650 if (args->value != 0)
651 return -EINVAL;
652
653 break;
654
655 case DRM_TEGRA_GEM_TILING_MODE_TILED:
656 mode = TEGRA_BO_TILING_MODE_TILED;
657
658 if (args->value != 0)
659 return -EINVAL;
660
661 break;
662
663 case DRM_TEGRA_GEM_TILING_MODE_BLOCK:
664 mode = TEGRA_BO_TILING_MODE_BLOCK;
665
666 if (args->value > 5)
667 return -EINVAL;
668
669 value = args->value;
670 break;
671
672 default:
673 return -EINVAL;
674 }
675
676 gem = drm_gem_object_lookup(file, args->handle);
677 if (!gem)
678 return -ENOENT;
679
680 bo = to_tegra_bo(gem);
681
682 bo->tiling.mode = mode;
683 bo->tiling.value = value;
684
685 drm_gem_object_unreference_unlocked(gem);
686
687 return 0;
688}
689
690static int tegra_gem_get_tiling(struct drm_device *drm, void *data,
691 struct drm_file *file)
692{
693 struct drm_tegra_gem_get_tiling *args = data;
694 struct drm_gem_object *gem;
695 struct tegra_bo *bo;
696 int err = 0;
697
698 gem = drm_gem_object_lookup(file, args->handle);
699 if (!gem)
700 return -ENOENT;
701
702 bo = to_tegra_bo(gem);
703
704 switch (bo->tiling.mode) {
705 case TEGRA_BO_TILING_MODE_PITCH:
706 args->mode = DRM_TEGRA_GEM_TILING_MODE_PITCH;
707 args->value = 0;
708 break;
709
710 case TEGRA_BO_TILING_MODE_TILED:
711 args->mode = DRM_TEGRA_GEM_TILING_MODE_TILED;
712 args->value = 0;
713 break;
714
715 case TEGRA_BO_TILING_MODE_BLOCK:
716 args->mode = DRM_TEGRA_GEM_TILING_MODE_BLOCK;
717 args->value = bo->tiling.value;
718 break;
719
720 default:
721 err = -EINVAL;
722 break;
723 }
724
725 drm_gem_object_unreference_unlocked(gem);
726
727 return err;
728}
729
730static int tegra_gem_set_flags(struct drm_device *drm, void *data,
731 struct drm_file *file)
732{
733 struct drm_tegra_gem_set_flags *args = data;
734 struct drm_gem_object *gem;
735 struct tegra_bo *bo;
736
737 if (args->flags & ~DRM_TEGRA_GEM_FLAGS)
738 return -EINVAL;
739
740 gem = drm_gem_object_lookup(file, args->handle);
741 if (!gem)
742 return -ENOENT;
743
744 bo = to_tegra_bo(gem);
745 bo->flags = 0;
746
747 if (args->flags & DRM_TEGRA_GEM_BOTTOM_UP)
748 bo->flags |= TEGRA_BO_BOTTOM_UP;
749
750 drm_gem_object_unreference_unlocked(gem);
751
752 return 0;
753}
754
755static int tegra_gem_get_flags(struct drm_device *drm, void *data,
756 struct drm_file *file)
757{
758 struct drm_tegra_gem_get_flags *args = data;
759 struct drm_gem_object *gem;
760 struct tegra_bo *bo;
761
762 gem = drm_gem_object_lookup(file, args->handle);
763 if (!gem)
764 return -ENOENT;
765
766 bo = to_tegra_bo(gem);
767 args->flags = 0;
768
769 if (bo->flags & TEGRA_BO_BOTTOM_UP)
770 args->flags |= DRM_TEGRA_GEM_BOTTOM_UP;
771
772 drm_gem_object_unreference_unlocked(gem);
773
774 return 0;
775}
776#endif
777
778static const struct drm_ioctl_desc tegra_drm_ioctls[] = {
779#ifdef CONFIG_DRM_TEGRA_STAGING
780 DRM_IOCTL_DEF_DRV(TEGRA_GEM_CREATE, tegra_gem_create, 0),
781 DRM_IOCTL_DEF_DRV(TEGRA_GEM_MMAP, tegra_gem_mmap, 0),
782 DRM_IOCTL_DEF_DRV(TEGRA_SYNCPT_READ, tegra_syncpt_read, 0),
783 DRM_IOCTL_DEF_DRV(TEGRA_SYNCPT_INCR, tegra_syncpt_incr, 0),
784 DRM_IOCTL_DEF_DRV(TEGRA_SYNCPT_WAIT, tegra_syncpt_wait, 0),
785 DRM_IOCTL_DEF_DRV(TEGRA_OPEN_CHANNEL, tegra_open_channel, 0),
786 DRM_IOCTL_DEF_DRV(TEGRA_CLOSE_CHANNEL, tegra_close_channel, 0),
787 DRM_IOCTL_DEF_DRV(TEGRA_GET_SYNCPT, tegra_get_syncpt, 0),
788 DRM_IOCTL_DEF_DRV(TEGRA_SUBMIT, tegra_submit, 0),
789 DRM_IOCTL_DEF_DRV(TEGRA_GET_SYNCPT_BASE, tegra_get_syncpt_base, 0),
790 DRM_IOCTL_DEF_DRV(TEGRA_GEM_SET_TILING, tegra_gem_set_tiling, 0),
791 DRM_IOCTL_DEF_DRV(TEGRA_GEM_GET_TILING, tegra_gem_get_tiling, 0),
792 DRM_IOCTL_DEF_DRV(TEGRA_GEM_SET_FLAGS, tegra_gem_set_flags, 0),
793 DRM_IOCTL_DEF_DRV(TEGRA_GEM_GET_FLAGS, tegra_gem_get_flags, 0),
794#endif
795};
796
797static const struct file_operations tegra_drm_fops = {
798 .owner = THIS_MODULE,
799 .open = drm_open,
800 .release = drm_release,
801 .unlocked_ioctl = drm_ioctl,
802 .mmap = tegra_drm_mmap,
803 .poll = drm_poll,
804 .read = drm_read,
805 .compat_ioctl = drm_compat_ioctl,
806 .llseek = noop_llseek,
807};
808
809static struct drm_crtc *tegra_crtc_from_pipe(struct drm_device *drm,
810 unsigned int pipe)
811{
812 struct drm_crtc *crtc;
813
814 list_for_each_entry(crtc, &drm->mode_config.crtc_list, head) {
815 if (pipe == drm_crtc_index(crtc))
816 return crtc;
817 }
818
819 return NULL;
820}
821
822static u32 tegra_drm_get_vblank_counter(struct drm_device *drm,
823 unsigned int pipe)
824{
825 struct drm_crtc *crtc = tegra_crtc_from_pipe(drm, pipe);
826 struct tegra_dc *dc = to_tegra_dc(crtc);
827
828 if (!crtc)
829 return 0;
830
831 return tegra_dc_get_vblank_counter(dc);
832}
833
834static int tegra_drm_enable_vblank(struct drm_device *drm, unsigned int pipe)
835{
836 struct drm_crtc *crtc = tegra_crtc_from_pipe(drm, pipe);
837 struct tegra_dc *dc = to_tegra_dc(crtc);
838
839 if (!crtc)
840 return -ENODEV;
841
842 tegra_dc_enable_vblank(dc);
843
844 return 0;
845}
846
847static void tegra_drm_disable_vblank(struct drm_device *drm, unsigned int pipe)
848{
849 struct drm_crtc *crtc = tegra_crtc_from_pipe(drm, pipe);
850 struct tegra_dc *dc = to_tegra_dc(crtc);
851
852 if (crtc)
853 tegra_dc_disable_vblank(dc);
854}
855
856static void tegra_drm_preclose(struct drm_device *drm, struct drm_file *file)
857{
858 struct tegra_drm_file *fpriv = file->driver_priv;
859 struct tegra_drm_context *context, *tmp;
860
861 list_for_each_entry_safe(context, tmp, &fpriv->contexts, list)
862 tegra_drm_context_free(context);
863
864 kfree(fpriv);
865}
866
867#ifdef CONFIG_DEBUG_FS
868static int tegra_debugfs_framebuffers(struct seq_file *s, void *data)
869{
870 struct drm_info_node *node = (struct drm_info_node *)s->private;
871 struct drm_device *drm = node->minor->dev;
872 struct drm_framebuffer *fb;
873
874 mutex_lock(&drm->mode_config.fb_lock);
875
876 list_for_each_entry(fb, &drm->mode_config.fb_list, head) {
877 seq_printf(s, "%3d: user size: %d x %d, depth %d, %d bpp, refcount %d\n",
878 fb->base.id, fb->width, fb->height, fb->depth,
879 fb->bits_per_pixel,
880 drm_framebuffer_read_refcount(fb));
881 }
882
883 mutex_unlock(&drm->mode_config.fb_lock);
884
885 return 0;
886}
887
888static int tegra_debugfs_iova(struct seq_file *s, void *data)
889{
890 struct drm_info_node *node = (struct drm_info_node *)s->private;
891 struct drm_device *drm = node->minor->dev;
892 struct tegra_drm *tegra = drm->dev_private;
893
894 return drm_mm_dump_table(s, &tegra->mm);
895}
896
897static struct drm_info_list tegra_debugfs_list[] = {
898 { "framebuffers", tegra_debugfs_framebuffers, 0 },
899 { "iova", tegra_debugfs_iova, 0 },
900};
901
902static int tegra_debugfs_init(struct drm_minor *minor)
903{
904 return drm_debugfs_create_files(tegra_debugfs_list,
905 ARRAY_SIZE(tegra_debugfs_list),
906 minor->debugfs_root, minor);
907}
908
909static void tegra_debugfs_cleanup(struct drm_minor *minor)
910{
911 drm_debugfs_remove_files(tegra_debugfs_list,
912 ARRAY_SIZE(tegra_debugfs_list), minor);
913}
914#endif
915
916static struct drm_driver tegra_drm_driver = {
917 .driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME |
918 DRIVER_ATOMIC,
919 .load = tegra_drm_load,
920 .unload = tegra_drm_unload,
921 .open = tegra_drm_open,
922 .preclose = tegra_drm_preclose,
923 .lastclose = tegra_drm_lastclose,
924
925 .get_vblank_counter = tegra_drm_get_vblank_counter,
926 .enable_vblank = tegra_drm_enable_vblank,
927 .disable_vblank = tegra_drm_disable_vblank,
928
929#if defined(CONFIG_DEBUG_FS)
930 .debugfs_init = tegra_debugfs_init,
931 .debugfs_cleanup = tegra_debugfs_cleanup,
932#endif
933
934 .gem_free_object_unlocked = tegra_bo_free_object,
935 .gem_vm_ops = &tegra_bo_vm_ops,
936
937 .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
938 .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
939 .gem_prime_export = tegra_gem_prime_export,
940 .gem_prime_import = tegra_gem_prime_import,
941
942 .dumb_create = tegra_bo_dumb_create,
943 .dumb_map_offset = tegra_bo_dumb_map_offset,
944 .dumb_destroy = drm_gem_dumb_destroy,
945
946 .ioctls = tegra_drm_ioctls,
947 .num_ioctls = ARRAY_SIZE(tegra_drm_ioctls),
948 .fops = &tegra_drm_fops,
949
950 .name = DRIVER_NAME,
951 .desc = DRIVER_DESC,
952 .date = DRIVER_DATE,
953 .major = DRIVER_MAJOR,
954 .minor = DRIVER_MINOR,
955 .patchlevel = DRIVER_PATCHLEVEL,
956};
957
958int tegra_drm_register_client(struct tegra_drm *tegra,
959 struct tegra_drm_client *client)
960{
961 mutex_lock(&tegra->clients_lock);
962 list_add_tail(&client->list, &tegra->clients);
963 mutex_unlock(&tegra->clients_lock);
964
965 return 0;
966}
967
968int tegra_drm_unregister_client(struct tegra_drm *tegra,
969 struct tegra_drm_client *client)
970{
971 mutex_lock(&tegra->clients_lock);
972 list_del_init(&client->list);
973 mutex_unlock(&tegra->clients_lock);
974
975 return 0;
976}
977
978static int host1x_drm_probe(struct host1x_device *dev)
979{
980 struct drm_driver *driver = &tegra_drm_driver;
981 struct drm_device *drm;
982 int err;
983
984 drm = drm_dev_alloc(driver, &dev->dev);
985 if (IS_ERR(drm))
986 return PTR_ERR(drm);
987
988 dev_set_drvdata(&dev->dev, drm);
989
990 err = drm_dev_register(drm, 0);
991 if (err < 0)
992 goto unref;
993
994 DRM_INFO("Initialized %s %d.%d.%d %s on minor %d\n", driver->name,
995 driver->major, driver->minor, driver->patchlevel,
996 driver->date, drm->primary->index);
997
998 return 0;
999
1000unref:
1001 drm_dev_unref(drm);
1002 return err;
1003}
1004
1005static int host1x_drm_remove(struct host1x_device *dev)
1006{
1007 struct drm_device *drm = dev_get_drvdata(&dev->dev);
1008
1009 drm_dev_unregister(drm);
1010 drm_dev_unref(drm);
1011
1012 return 0;
1013}
1014
1015#ifdef CONFIG_PM_SLEEP
1016static int host1x_drm_suspend(struct device *dev)
1017{
1018 struct drm_device *drm = dev_get_drvdata(dev);
1019 struct tegra_drm *tegra = drm->dev_private;
1020
1021 drm_kms_helper_poll_disable(drm);
1022 tegra_drm_fb_suspend(drm);
1023
1024 tegra->state = drm_atomic_helper_suspend(drm);
1025 if (IS_ERR(tegra->state)) {
1026 tegra_drm_fb_resume(drm);
1027 drm_kms_helper_poll_enable(drm);
1028 return PTR_ERR(tegra->state);
1029 }
1030
1031 return 0;
1032}
1033
1034static int host1x_drm_resume(struct device *dev)
1035{
1036 struct drm_device *drm = dev_get_drvdata(dev);
1037 struct tegra_drm *tegra = drm->dev_private;
1038
1039 drm_atomic_helper_resume(drm, tegra->state);
1040 tegra_drm_fb_resume(drm);
1041 drm_kms_helper_poll_enable(drm);
1042
1043 return 0;
1044}
1045#endif
1046
1047static SIMPLE_DEV_PM_OPS(host1x_drm_pm_ops, host1x_drm_suspend,
1048 host1x_drm_resume);
1049
1050static const struct of_device_id host1x_drm_subdevs[] = {
1051 { .compatible = "nvidia,tegra20-dc", },
1052 { .compatible = "nvidia,tegra20-hdmi", },
1053 { .compatible = "nvidia,tegra20-gr2d", },
1054 { .compatible = "nvidia,tegra20-gr3d", },
1055 { .compatible = "nvidia,tegra30-dc", },
1056 { .compatible = "nvidia,tegra30-hdmi", },
1057 { .compatible = "nvidia,tegra30-gr2d", },
1058 { .compatible = "nvidia,tegra30-gr3d", },
1059 { .compatible = "nvidia,tegra114-dsi", },
1060 { .compatible = "nvidia,tegra114-hdmi", },
1061 { .compatible = "nvidia,tegra114-gr3d", },
1062 { .compatible = "nvidia,tegra124-dc", },
1063 { .compatible = "nvidia,tegra124-sor", },
1064 { .compatible = "nvidia,tegra124-hdmi", },
1065 { .compatible = "nvidia,tegra124-dsi", },
1066 { .compatible = "nvidia,tegra132-dsi", },
1067 { .compatible = "nvidia,tegra210-dc", },
1068 { .compatible = "nvidia,tegra210-dsi", },
1069 { .compatible = "nvidia,tegra210-sor", },
1070 { .compatible = "nvidia,tegra210-sor1", },
1071 { /* sentinel */ }
1072};
1073
1074static struct host1x_driver host1x_drm_driver = {
1075 .driver = {
1076 .name = "drm",
1077 .pm = &host1x_drm_pm_ops,
1078 },
1079 .probe = host1x_drm_probe,
1080 .remove = host1x_drm_remove,
1081 .subdevs = host1x_drm_subdevs,
1082};
1083
1084static struct platform_driver * const drivers[] = {
1085 &tegra_dc_driver,
1086 &tegra_hdmi_driver,
1087 &tegra_dsi_driver,
1088 &tegra_dpaux_driver,
1089 &tegra_sor_driver,
1090 &tegra_gr2d_driver,
1091 &tegra_gr3d_driver,
1092};
1093
1094static int __init host1x_drm_init(void)
1095{
1096 int err;
1097
1098 err = host1x_driver_register(&host1x_drm_driver);
1099 if (err < 0)
1100 return err;
1101
1102 err = platform_register_drivers(drivers, ARRAY_SIZE(drivers));
1103 if (err < 0)
1104 goto unregister_host1x;
1105
1106 return 0;
1107
1108unregister_host1x:
1109 host1x_driver_unregister(&host1x_drm_driver);
1110 return err;
1111}
1112module_init(host1x_drm_init);
1113
1114static void __exit host1x_drm_exit(void)
1115{
1116 platform_unregister_drivers(drivers, ARRAY_SIZE(drivers));
1117 host1x_driver_unregister(&host1x_drm_driver);
1118}
1119module_exit(host1x_drm_exit);
1120
1121MODULE_AUTHOR("Thierry Reding <thierry.reding@avionic-design.de>");
1122MODULE_DESCRIPTION("NVIDIA Tegra DRM driver");
1123MODULE_LICENSE("GPL v2");