This source file includes following definitions.
- drm_crtc_from_index
- drm_crtc_force_disable
- drm_num_crtcs
- drm_crtc_register_all
- drm_crtc_unregister_all
- drm_crtc_crc_init
- drm_crtc_crc_fini
- fence_to_crtc
- drm_crtc_fence_get_driver_name
- drm_crtc_fence_get_timeline_name
- drm_crtc_create_fence
- drm_crtc_init_with_planes
- drm_crtc_cleanup
- drm_mode_getcrtc
- __drm_mode_set_config_internal
- drm_mode_set_config_internal
- drm_crtc_check_viewport
- drm_mode_setcrtc
- drm_mode_crtc_set_obj_prop
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32 #include <linux/ctype.h>
33 #include <linux/list.h>
34 #include <linux/slab.h>
35 #include <linux/export.h>
36 #include <linux/dma-fence.h>
37 #include <linux/uaccess.h>
38 #include <drm/drm_crtc.h>
39 #include <drm/drm_edid.h>
40 #include <drm/drm_fourcc.h>
41 #include <drm/drm_modeset_lock.h>
42 #include <drm/drm_atomic.h>
43 #include <drm/drm_auth.h>
44 #include <drm/drm_debugfs_crc.h>
45 #include <drm/drm_drv.h>
46 #include <drm/drm_print.h>
47 #include <drm/drm_file.h>
48
49 #include "drm_crtc_internal.h"
50 #include "drm_internal.h"
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84 struct drm_crtc *drm_crtc_from_index(struct drm_device *dev, int idx)
85 {
86 struct drm_crtc *crtc;
87
88 drm_for_each_crtc(crtc, dev)
89 if (idx == crtc->index)
90 return crtc;
91
92 return NULL;
93 }
94 EXPORT_SYMBOL(drm_crtc_from_index);
95
96 int drm_crtc_force_disable(struct drm_crtc *crtc)
97 {
98 struct drm_mode_set set = {
99 .crtc = crtc,
100 };
101
102 WARN_ON(drm_drv_uses_atomic_modeset(crtc->dev));
103
104 return drm_mode_set_config_internal(&set);
105 }
106
107 static unsigned int drm_num_crtcs(struct drm_device *dev)
108 {
109 unsigned int num = 0;
110 struct drm_crtc *tmp;
111
112 drm_for_each_crtc(tmp, dev) {
113 num++;
114 }
115
116 return num;
117 }
118
119 int drm_crtc_register_all(struct drm_device *dev)
120 {
121 struct drm_crtc *crtc;
122 int ret = 0;
123
124 drm_for_each_crtc(crtc, dev) {
125 drm_debugfs_crtc_add(crtc);
126
127 if (crtc->funcs->late_register)
128 ret = crtc->funcs->late_register(crtc);
129 if (ret)
130 return ret;
131 }
132
133 return 0;
134 }
135
136 void drm_crtc_unregister_all(struct drm_device *dev)
137 {
138 struct drm_crtc *crtc;
139
140 drm_for_each_crtc(crtc, dev) {
141 if (crtc->funcs->early_unregister)
142 crtc->funcs->early_unregister(crtc);
143 drm_debugfs_crtc_remove(crtc);
144 }
145 }
146
147 static int drm_crtc_crc_init(struct drm_crtc *crtc)
148 {
149 #ifdef CONFIG_DEBUG_FS
150 spin_lock_init(&crtc->crc.lock);
151 init_waitqueue_head(&crtc->crc.wq);
152 crtc->crc.source = kstrdup("auto", GFP_KERNEL);
153 if (!crtc->crc.source)
154 return -ENOMEM;
155 #endif
156 return 0;
157 }
158
159 static void drm_crtc_crc_fini(struct drm_crtc *crtc)
160 {
161 #ifdef CONFIG_DEBUG_FS
162 kfree(crtc->crc.source);
163 #endif
164 }
165
166 static const struct dma_fence_ops drm_crtc_fence_ops;
167
168 static struct drm_crtc *fence_to_crtc(struct dma_fence *fence)
169 {
170 BUG_ON(fence->ops != &drm_crtc_fence_ops);
171 return container_of(fence->lock, struct drm_crtc, fence_lock);
172 }
173
174 static const char *drm_crtc_fence_get_driver_name(struct dma_fence *fence)
175 {
176 struct drm_crtc *crtc = fence_to_crtc(fence);
177
178 return crtc->dev->driver->name;
179 }
180
181 static const char *drm_crtc_fence_get_timeline_name(struct dma_fence *fence)
182 {
183 struct drm_crtc *crtc = fence_to_crtc(fence);
184
185 return crtc->timeline_name;
186 }
187
188 static const struct dma_fence_ops drm_crtc_fence_ops = {
189 .get_driver_name = drm_crtc_fence_get_driver_name,
190 .get_timeline_name = drm_crtc_fence_get_timeline_name,
191 };
192
193 struct dma_fence *drm_crtc_create_fence(struct drm_crtc *crtc)
194 {
195 struct dma_fence *fence;
196
197 fence = kzalloc(sizeof(*fence), GFP_KERNEL);
198 if (!fence)
199 return NULL;
200
201 dma_fence_init(fence, &drm_crtc_fence_ops, &crtc->fence_lock,
202 crtc->fence_context, ++crtc->fence_seqno);
203
204 return fence;
205 }
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226 int drm_crtc_init_with_planes(struct drm_device *dev, struct drm_crtc *crtc,
227 struct drm_plane *primary,
228 struct drm_plane *cursor,
229 const struct drm_crtc_funcs *funcs,
230 const char *name, ...)
231 {
232 struct drm_mode_config *config = &dev->mode_config;
233 int ret;
234
235 WARN_ON(primary && primary->type != DRM_PLANE_TYPE_PRIMARY);
236 WARN_ON(cursor && cursor->type != DRM_PLANE_TYPE_CURSOR);
237
238
239 if (WARN_ON(config->num_crtc >= 32))
240 return -EINVAL;
241
242 WARN_ON(drm_drv_uses_atomic_modeset(dev) &&
243 (!funcs->atomic_destroy_state ||
244 !funcs->atomic_duplicate_state));
245
246 crtc->dev = dev;
247 crtc->funcs = funcs;
248
249 INIT_LIST_HEAD(&crtc->commit_list);
250 spin_lock_init(&crtc->commit_lock);
251
252 drm_modeset_lock_init(&crtc->mutex);
253 ret = drm_mode_object_add(dev, &crtc->base, DRM_MODE_OBJECT_CRTC);
254 if (ret)
255 return ret;
256
257 if (name) {
258 va_list ap;
259
260 va_start(ap, name);
261 crtc->name = kvasprintf(GFP_KERNEL, name, ap);
262 va_end(ap);
263 } else {
264 crtc->name = kasprintf(GFP_KERNEL, "crtc-%d",
265 drm_num_crtcs(dev));
266 }
267 if (!crtc->name) {
268 drm_mode_object_unregister(dev, &crtc->base);
269 return -ENOMEM;
270 }
271
272 crtc->fence_context = dma_fence_context_alloc(1);
273 spin_lock_init(&crtc->fence_lock);
274 snprintf(crtc->timeline_name, sizeof(crtc->timeline_name),
275 "CRTC:%d-%s", crtc->base.id, crtc->name);
276
277 crtc->base.properties = &crtc->properties;
278
279 list_add_tail(&crtc->head, &config->crtc_list);
280 crtc->index = config->num_crtc++;
281
282 crtc->primary = primary;
283 crtc->cursor = cursor;
284 if (primary && !primary->possible_crtcs)
285 primary->possible_crtcs = drm_crtc_mask(crtc);
286 if (cursor && !cursor->possible_crtcs)
287 cursor->possible_crtcs = drm_crtc_mask(crtc);
288
289 ret = drm_crtc_crc_init(crtc);
290 if (ret) {
291 drm_mode_object_unregister(dev, &crtc->base);
292 return ret;
293 }
294
295 if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
296 drm_object_attach_property(&crtc->base, config->prop_active, 0);
297 drm_object_attach_property(&crtc->base, config->prop_mode_id, 0);
298 drm_object_attach_property(&crtc->base,
299 config->prop_out_fence_ptr, 0);
300 drm_object_attach_property(&crtc->base,
301 config->prop_vrr_enabled, 0);
302 }
303
304 return 0;
305 }
306 EXPORT_SYMBOL(drm_crtc_init_with_planes);
307
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315
316 void drm_crtc_cleanup(struct drm_crtc *crtc)
317 {
318 struct drm_device *dev = crtc->dev;
319
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323
324
325 drm_crtc_crc_fini(crtc);
326
327 kfree(crtc->gamma_store);
328 crtc->gamma_store = NULL;
329
330 drm_modeset_lock_fini(&crtc->mutex);
331
332 drm_mode_object_unregister(dev, &crtc->base);
333 list_del(&crtc->head);
334 dev->mode_config.num_crtc--;
335
336 WARN_ON(crtc->state && !crtc->funcs->atomic_destroy_state);
337 if (crtc->state && crtc->funcs->atomic_destroy_state)
338 crtc->funcs->atomic_destroy_state(crtc, crtc->state);
339
340 kfree(crtc->name);
341
342 memset(crtc, 0, sizeof(*crtc));
343 }
344 EXPORT_SYMBOL(drm_crtc_cleanup);
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358
359 int drm_mode_getcrtc(struct drm_device *dev,
360 void *data, struct drm_file *file_priv)
361 {
362 struct drm_mode_crtc *crtc_resp = data;
363 struct drm_crtc *crtc;
364 struct drm_plane *plane;
365
366 if (!drm_core_check_feature(dev, DRIVER_MODESET))
367 return -EOPNOTSUPP;
368
369 crtc = drm_crtc_find(dev, file_priv, crtc_resp->crtc_id);
370 if (!crtc)
371 return -ENOENT;
372
373 plane = crtc->primary;
374
375 crtc_resp->gamma_size = crtc->gamma_size;
376
377 drm_modeset_lock(&plane->mutex, NULL);
378 if (plane->state && plane->state->fb)
379 crtc_resp->fb_id = plane->state->fb->base.id;
380 else if (!plane->state && plane->fb)
381 crtc_resp->fb_id = plane->fb->base.id;
382 else
383 crtc_resp->fb_id = 0;
384
385 if (plane->state) {
386 crtc_resp->x = plane->state->src_x >> 16;
387 crtc_resp->y = plane->state->src_y >> 16;
388 }
389 drm_modeset_unlock(&plane->mutex);
390
391 drm_modeset_lock(&crtc->mutex, NULL);
392 if (crtc->state) {
393 if (crtc->state->enable) {
394 drm_mode_convert_to_umode(&crtc_resp->mode, &crtc->state->mode);
395 crtc_resp->mode_valid = 1;
396 } else {
397 crtc_resp->mode_valid = 0;
398 }
399 } else {
400 crtc_resp->x = crtc->x;
401 crtc_resp->y = crtc->y;
402
403 if (crtc->enabled) {
404 drm_mode_convert_to_umode(&crtc_resp->mode, &crtc->mode);
405 crtc_resp->mode_valid = 1;
406
407 } else {
408 crtc_resp->mode_valid = 0;
409 }
410 }
411 if (!file_priv->aspect_ratio_allowed)
412 crtc_resp->mode.flags &= ~DRM_MODE_FLAG_PIC_AR_MASK;
413 drm_modeset_unlock(&crtc->mutex);
414
415 return 0;
416 }
417
418 static int __drm_mode_set_config_internal(struct drm_mode_set *set,
419 struct drm_modeset_acquire_ctx *ctx)
420 {
421 struct drm_crtc *crtc = set->crtc;
422 struct drm_framebuffer *fb;
423 struct drm_crtc *tmp;
424 int ret;
425
426 WARN_ON(drm_drv_uses_atomic_modeset(crtc->dev));
427
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430
431
432
433 drm_for_each_crtc(tmp, crtc->dev) {
434 struct drm_plane *plane = tmp->primary;
435
436 plane->old_fb = plane->fb;
437 }
438
439 fb = set->fb;
440
441 ret = crtc->funcs->set_config(set, ctx);
442 if (ret == 0) {
443 struct drm_plane *plane = crtc->primary;
444
445 plane->crtc = fb ? crtc : NULL;
446 plane->fb = fb;
447 }
448
449 drm_for_each_crtc(tmp, crtc->dev) {
450 struct drm_plane *plane = tmp->primary;
451
452 if (plane->fb)
453 drm_framebuffer_get(plane->fb);
454 if (plane->old_fb)
455 drm_framebuffer_put(plane->old_fb);
456 plane->old_fb = NULL;
457 }
458
459 return ret;
460 }
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473
474
475 int drm_mode_set_config_internal(struct drm_mode_set *set)
476 {
477 WARN_ON(drm_drv_uses_atomic_modeset(set->crtc->dev));
478
479 return __drm_mode_set_config_internal(set, NULL);
480 }
481 EXPORT_SYMBOL(drm_mode_set_config_internal);
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491
492 int drm_crtc_check_viewport(const struct drm_crtc *crtc,
493 int x, int y,
494 const struct drm_display_mode *mode,
495 const struct drm_framebuffer *fb)
496
497 {
498 int hdisplay, vdisplay;
499
500 drm_mode_get_hv_timing(mode, &hdisplay, &vdisplay);
501
502 if (crtc->state &&
503 drm_rotation_90_or_270(crtc->primary->state->rotation))
504 swap(hdisplay, vdisplay);
505
506 return drm_framebuffer_check_src_coords(x << 16, y << 16,
507 hdisplay << 16, vdisplay << 16,
508 fb);
509 }
510 EXPORT_SYMBOL(drm_crtc_check_viewport);
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524
525 int drm_mode_setcrtc(struct drm_device *dev, void *data,
526 struct drm_file *file_priv)
527 {
528 struct drm_mode_config *config = &dev->mode_config;
529 struct drm_mode_crtc *crtc_req = data;
530 struct drm_crtc *crtc;
531 struct drm_plane *plane;
532 struct drm_connector **connector_set = NULL, *connector;
533 struct drm_framebuffer *fb = NULL;
534 struct drm_display_mode *mode = NULL;
535 struct drm_mode_set set;
536 uint32_t __user *set_connectors_ptr;
537 struct drm_modeset_acquire_ctx ctx;
538 int ret;
539 int i;
540
541 if (!drm_core_check_feature(dev, DRIVER_MODESET))
542 return -EOPNOTSUPP;
543
544
545
546
547
548 if (crtc_req->x & 0xffff0000 || crtc_req->y & 0xffff0000)
549 return -ERANGE;
550
551 crtc = drm_crtc_find(dev, file_priv, crtc_req->crtc_id);
552 if (!crtc) {
553 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
554 return -ENOENT;
555 }
556 DRM_DEBUG_KMS("[CRTC:%d:%s]\n", crtc->base.id, crtc->name);
557
558 plane = crtc->primary;
559
560
561 if (crtc_req->mode_valid && !drm_lease_held(file_priv, plane->base.id))
562 return -EACCES;
563
564 mutex_lock(&crtc->dev->mode_config.mutex);
565 DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx,
566 DRM_MODESET_ACQUIRE_INTERRUPTIBLE, ret);
567
568 if (crtc_req->mode_valid) {
569
570
571 if (crtc_req->fb_id == -1) {
572 struct drm_framebuffer *old_fb;
573
574 if (plane->state)
575 old_fb = plane->state->fb;
576 else
577 old_fb = plane->fb;
578
579 if (!old_fb) {
580 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
581 ret = -EINVAL;
582 goto out;
583 }
584
585 fb = old_fb;
586
587 drm_framebuffer_get(fb);
588 } else {
589 fb = drm_framebuffer_lookup(dev, file_priv, crtc_req->fb_id);
590 if (!fb) {
591 DRM_DEBUG_KMS("Unknown FB ID%d\n",
592 crtc_req->fb_id);
593 ret = -ENOENT;
594 goto out;
595 }
596 }
597
598 mode = drm_mode_create(dev);
599 if (!mode) {
600 ret = -ENOMEM;
601 goto out;
602 }
603 if (!file_priv->aspect_ratio_allowed &&
604 (crtc_req->mode.flags & DRM_MODE_FLAG_PIC_AR_MASK) != DRM_MODE_FLAG_PIC_AR_NONE) {
605 DRM_DEBUG_KMS("Unexpected aspect-ratio flag bits\n");
606 ret = -EINVAL;
607 goto out;
608 }
609
610
611 ret = drm_mode_convert_umode(dev, mode, &crtc_req->mode);
612 if (ret) {
613 DRM_DEBUG_KMS("Invalid mode (ret=%d, status=%s)\n",
614 ret, drm_get_mode_status_name(mode->status));
615 drm_mode_debug_printmodeline(mode);
616 goto out;
617 }
618
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623
624
625
626 if (!plane->format_default) {
627 ret = drm_plane_check_pixel_format(plane,
628 fb->format->format,
629 fb->modifier);
630 if (ret) {
631 struct drm_format_name_buf format_name;
632 DRM_DEBUG_KMS("Invalid pixel format %s, modifier 0x%llx\n",
633 drm_get_format_name(fb->format->format,
634 &format_name),
635 fb->modifier);
636 goto out;
637 }
638 }
639
640 ret = drm_crtc_check_viewport(crtc, crtc_req->x, crtc_req->y,
641 mode, fb);
642 if (ret)
643 goto out;
644
645 }
646
647 if (crtc_req->count_connectors == 0 && mode) {
648 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
649 ret = -EINVAL;
650 goto out;
651 }
652
653 if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
654 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
655 crtc_req->count_connectors);
656 ret = -EINVAL;
657 goto out;
658 }
659
660 if (crtc_req->count_connectors > 0) {
661 u32 out_id;
662
663
664 if (crtc_req->count_connectors > config->num_connector) {
665 ret = -EINVAL;
666 goto out;
667 }
668
669 connector_set = kmalloc_array(crtc_req->count_connectors,
670 sizeof(struct drm_connector *),
671 GFP_KERNEL);
672 if (!connector_set) {
673 ret = -ENOMEM;
674 goto out;
675 }
676
677 for (i = 0; i < crtc_req->count_connectors; i++) {
678 connector_set[i] = NULL;
679 set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr;
680 if (get_user(out_id, &set_connectors_ptr[i])) {
681 ret = -EFAULT;
682 goto out;
683 }
684
685 connector = drm_connector_lookup(dev, file_priv, out_id);
686 if (!connector) {
687 DRM_DEBUG_KMS("Connector id %d unknown\n",
688 out_id);
689 ret = -ENOENT;
690 goto out;
691 }
692 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
693 connector->base.id,
694 connector->name);
695
696 connector_set[i] = connector;
697 }
698 }
699
700 set.crtc = crtc;
701 set.x = crtc_req->x;
702 set.y = crtc_req->y;
703 set.mode = mode;
704 set.connectors = connector_set;
705 set.num_connectors = crtc_req->count_connectors;
706 set.fb = fb;
707
708 if (drm_drv_uses_atomic_modeset(dev))
709 ret = crtc->funcs->set_config(&set, &ctx);
710 else
711 ret = __drm_mode_set_config_internal(&set, &ctx);
712
713 out:
714 if (fb)
715 drm_framebuffer_put(fb);
716
717 if (connector_set) {
718 for (i = 0; i < crtc_req->count_connectors; i++) {
719 if (connector_set[i])
720 drm_connector_put(connector_set[i]);
721 }
722 }
723 kfree(connector_set);
724 drm_mode_destroy(dev, mode);
725
726
727 connector_set = NULL;
728 fb = NULL;
729 mode = NULL;
730
731 DRM_MODESET_LOCK_ALL_END(ctx, ret);
732 mutex_unlock(&crtc->dev->mode_config.mutex);
733
734 return ret;
735 }
736
737 int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
738 struct drm_property *property,
739 uint64_t value)
740 {
741 int ret = -EINVAL;
742 struct drm_crtc *crtc = obj_to_crtc(obj);
743
744 if (crtc->funcs->set_property)
745 ret = crtc->funcs->set_property(crtc, property, value);
746 if (!ret)
747 drm_object_property_set_value(obj, property, value);
748
749 return ret;
750 }