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1/*
2 * Copyright (c) 2006-2008 Intel Corporation
3 * Copyright (c) 2007 Dave Airlie <airlied@linux.ie>
4 * Copyright (c) 2008 Red Hat Inc.
5 *
6 * DRM core CRTC related functions
7 *
8 * Permission to use, copy, modify, distribute, and sell this software and its
9 * documentation for any purpose is hereby granted without fee, provided that
10 * the above copyright notice appear in all copies and that both that copyright
11 * notice and this permission notice appear in supporting documentation, and
12 * that the name of the copyright holders not be used in advertising or
13 * publicity pertaining to distribution of the software without specific,
14 * written prior permission. The copyright holders make no representations
15 * about the suitability of this software for any purpose. It is provided "as
16 * is" without express or implied warranty.
17 *
18 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
19 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
20 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
21 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
22 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
23 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
24 * OF THIS SOFTWARE.
25 *
26 * Authors:
27 * Keith Packard
28 * Eric Anholt <eric@anholt.net>
29 * Dave Airlie <airlied@linux.ie>
30 * Jesse Barnes <jesse.barnes@intel.com>
31 */
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"
51
52/**
53 * DOC: overview
54 *
55 * A CRTC represents the overall display pipeline. It receives pixel data from
56 * &drm_plane and blends them together. The &drm_display_mode is also attached
57 * to the CRTC, specifying display timings. On the output side the data is fed
58 * to one or more &drm_encoder, which are then each connected to one
59 * &drm_connector.
60 *
61 * To create a CRTC, a KMS drivers allocates and zeroes an instances of
62 * &struct drm_crtc (possibly as part of a larger structure) and registers it
63 * with a call to drm_crtc_init_with_planes().
64 *
65 * The CRTC is also the entry point for legacy modeset operations, see
66 * &drm_crtc_funcs.set_config, legacy plane operations, see
67 * &drm_crtc_funcs.page_flip and &drm_crtc_funcs.cursor_set2, and other legacy
68 * operations like &drm_crtc_funcs.gamma_set. For atomic drivers all these
69 * features are controlled through &drm_property and
70 * &drm_mode_config_funcs.atomic_check and &drm_mode_config_funcs.atomic_check.
71 */
72
73/**
74 * drm_crtc_from_index - find the registered CRTC at an index
75 * @dev: DRM device
76 * @idx: index of registered CRTC to find for
77 *
78 * Given a CRTC index, return the registered CRTC from DRM device's
79 * list of CRTCs with matching index. This is the inverse of drm_crtc_index().
80 * It's useful in the vblank callbacks (like &drm_driver.enable_vblank or
81 * &drm_driver.disable_vblank), since that still deals with indices instead
82 * of pointers to &struct drm_crtc."
83 */
84struct 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}
94EXPORT_SYMBOL(drm_crtc_from_index);
95
96int 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
107static 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
119int 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
136void 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
147static 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
159static void drm_crtc_crc_fini(struct drm_crtc *crtc)
160{
161#ifdef CONFIG_DEBUG_FS
162 kfree(crtc->crc.source);
163#endif
164}
165
166static const struct dma_fence_ops drm_crtc_fence_ops;
167
168static 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
174static 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
181static 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
188static 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
193struct 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}
206
207/**
208 * drm_crtc_init_with_planes - Initialise a new CRTC object with
209 * specified primary and cursor planes.
210 * @dev: DRM device
211 * @crtc: CRTC object to init
212 * @primary: Primary plane for CRTC
213 * @cursor: Cursor plane for CRTC
214 * @funcs: callbacks for the new CRTC
215 * @name: printf style format string for the CRTC name, or NULL for default name
216 *
217 * Inits a new object created as base part of a driver crtc object. Drivers
218 * should use this function instead of drm_crtc_init(), which is only provided
219 * for backwards compatibility with drivers which do not yet support universal
220 * planes). For really simple hardware which has only 1 plane look at
221 * drm_simple_display_pipe_init() instead.
222 *
223 * Returns:
224 * Zero on success, error code on failure.
225 */
226int 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 /* crtc index is used with 32bit bitmasks */
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}
306EXPORT_SYMBOL(drm_crtc_init_with_planes);
307
308/**
309 * drm_crtc_cleanup - Clean up the core crtc usage
310 * @crtc: CRTC to cleanup
311 *
312 * This function cleans up @crtc and removes it from the DRM mode setting
313 * core. Note that the function does *not* free the crtc structure itself,
314 * this is the responsibility of the caller.
315 */
316void drm_crtc_cleanup(struct drm_crtc *crtc)
317{
318 struct drm_device *dev = crtc->dev;
319
320 /* Note that the crtc_list is considered to be static; should we
321 * remove the drm_crtc at runtime we would have to decrement all
322 * the indices on the drm_crtc after us in the crtc_list.
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}
344EXPORT_SYMBOL(drm_crtc_cleanup);
345
346/**
347 * drm_mode_getcrtc - get CRTC configuration
348 * @dev: drm device for the ioctl
349 * @data: data pointer for the ioctl
350 * @file_priv: drm file for the ioctl call
351 *
352 * Construct a CRTC configuration structure to return to the user.
353 *
354 * Called by the user via ioctl.
355 *
356 * Returns:
357 * Zero on success, negative errno on failure.
358 */
359int 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
418static 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
428 /*
429 * NOTE: ->set_config can also disable other crtcs (if we steal all
430 * connectors from it), hence we need to refcount the fbs across all
431 * crtcs. Atomic modeset will have saner semantics ...
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}
461
462/**
463 * drm_mode_set_config_internal - helper to call &drm_mode_config_funcs.set_config
464 * @set: modeset config to set
465 *
466 * This is a little helper to wrap internal calls to the
467 * &drm_mode_config_funcs.set_config driver interface. The only thing it adds is
468 * correct refcounting dance.
469 *
470 * This should only be used by non-atomic legacy drivers.
471 *
472 * Returns:
473 * Zero on success, negative errno on failure.
474 */
475int 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}
481EXPORT_SYMBOL(drm_mode_set_config_internal);
482
483/**
484 * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the
485 * CRTC viewport
486 * @crtc: CRTC that framebuffer will be displayed on
487 * @x: x panning
488 * @y: y panning
489 * @mode: mode that framebuffer will be displayed under
490 * @fb: framebuffer to check size of
491 */
492int 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}
510EXPORT_SYMBOL(drm_crtc_check_viewport);
511
512/**
513 * drm_mode_setcrtc - set CRTC configuration
514 * @dev: drm device for the ioctl
515 * @data: data pointer for the ioctl
516 * @file_priv: drm file for the ioctl call
517 *
518 * Build a new CRTC configuration based on user request.
519 *
520 * Called by the user via ioctl.
521 *
522 * Returns:
523 * Zero on success, negative errno on failure.
524 */
525int 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 * Universal plane src offsets are only 16.16, prevent havoc for
546 * drivers using universal plane code internally.
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 /* allow disabling with the primary plane leased */
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 /* If we have a mode we need a framebuffer. */
570 /* If we pass -1, set the mode with the currently bound fb */
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 /* Make refcounting symmetric with the lookup path. */
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
619 /*
620 * Check whether the primary plane supports the fb pixel format.
621 * Drivers not implementing the universal planes API use a
622 * default formats list provided by the DRM core which doesn't
623 * match real hardware capabilities. Skip the check in that
624 * case.
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 /* Avoid unbounded kernel memory allocation */
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
713out:
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 /* In case we need to retry... */
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
737int 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}
1/*
2 * Copyright (c) 2006-2008 Intel Corporation
3 * Copyright (c) 2007 Dave Airlie <airlied@linux.ie>
4 * Copyright (c) 2008 Red Hat Inc.
5 *
6 * DRM core CRTC related functions
7 *
8 * Permission to use, copy, modify, distribute, and sell this software and its
9 * documentation for any purpose is hereby granted without fee, provided that
10 * the above copyright notice appear in all copies and that both that copyright
11 * notice and this permission notice appear in supporting documentation, and
12 * that the name of the copyright holders not be used in advertising or
13 * publicity pertaining to distribution of the software without specific,
14 * written prior permission. The copyright holders make no representations
15 * about the suitability of this software for any purpose. It is provided "as
16 * is" without express or implied warranty.
17 *
18 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
19 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
20 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
21 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
22 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
23 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
24 * OF THIS SOFTWARE.
25 *
26 * Authors:
27 * Keith Packard
28 * Eric Anholt <eric@anholt.net>
29 * Dave Airlie <airlied@linux.ie>
30 * Jesse Barnes <jesse.barnes@intel.com>
31 */
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 <drm/drmP.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
46#include "drm_crtc_internal.h"
47#include "drm_internal.h"
48
49/**
50 * drm_crtc_force_disable - Forcibly turn off a CRTC
51 * @crtc: CRTC to turn off
52 *
53 * Returns:
54 * Zero on success, error code on failure.
55 */
56int drm_crtc_force_disable(struct drm_crtc *crtc)
57{
58 struct drm_mode_set set = {
59 .crtc = crtc,
60 };
61
62 return drm_mode_set_config_internal(&set);
63}
64EXPORT_SYMBOL(drm_crtc_force_disable);
65
66/**
67 * drm_crtc_force_disable_all - Forcibly turn off all enabled CRTCs
68 * @dev: DRM device whose CRTCs to turn off
69 *
70 * Drivers may want to call this on unload to ensure that all displays are
71 * unlit and the GPU is in a consistent, low power state. Takes modeset locks.
72 *
73 * Returns:
74 * Zero on success, error code on failure.
75 */
76int drm_crtc_force_disable_all(struct drm_device *dev)
77{
78 struct drm_crtc *crtc;
79 int ret = 0;
80
81 drm_modeset_lock_all(dev);
82 drm_for_each_crtc(crtc, dev)
83 if (crtc->enabled) {
84 ret = drm_crtc_force_disable(crtc);
85 if (ret)
86 goto out;
87 }
88out:
89 drm_modeset_unlock_all(dev);
90 return ret;
91}
92EXPORT_SYMBOL(drm_crtc_force_disable_all);
93
94static unsigned int drm_num_crtcs(struct drm_device *dev)
95{
96 unsigned int num = 0;
97 struct drm_crtc *tmp;
98
99 drm_for_each_crtc(tmp, dev) {
100 num++;
101 }
102
103 return num;
104}
105
106int drm_crtc_register_all(struct drm_device *dev)
107{
108 struct drm_crtc *crtc;
109 int ret = 0;
110
111 drm_for_each_crtc(crtc, dev) {
112 if (drm_debugfs_crtc_add(crtc))
113 DRM_ERROR("Failed to initialize debugfs entry for CRTC '%s'.\n",
114 crtc->name);
115
116 if (crtc->funcs->late_register)
117 ret = crtc->funcs->late_register(crtc);
118 if (ret)
119 return ret;
120 }
121
122 return 0;
123}
124
125void drm_crtc_unregister_all(struct drm_device *dev)
126{
127 struct drm_crtc *crtc;
128
129 drm_for_each_crtc(crtc, dev) {
130 if (crtc->funcs->early_unregister)
131 crtc->funcs->early_unregister(crtc);
132 drm_debugfs_crtc_remove(crtc);
133 }
134}
135
136static int drm_crtc_crc_init(struct drm_crtc *crtc)
137{
138#ifdef CONFIG_DEBUG_FS
139 spin_lock_init(&crtc->crc.lock);
140 init_waitqueue_head(&crtc->crc.wq);
141 crtc->crc.source = kstrdup("auto", GFP_KERNEL);
142 if (!crtc->crc.source)
143 return -ENOMEM;
144#endif
145 return 0;
146}
147
148static void drm_crtc_crc_fini(struct drm_crtc *crtc)
149{
150#ifdef CONFIG_DEBUG_FS
151 kfree(crtc->crc.source);
152#endif
153}
154
155static const struct dma_fence_ops drm_crtc_fence_ops;
156
157static struct drm_crtc *fence_to_crtc(struct dma_fence *fence)
158{
159 BUG_ON(fence->ops != &drm_crtc_fence_ops);
160 return container_of(fence->lock, struct drm_crtc, fence_lock);
161}
162
163static const char *drm_crtc_fence_get_driver_name(struct dma_fence *fence)
164{
165 struct drm_crtc *crtc = fence_to_crtc(fence);
166
167 return crtc->dev->driver->name;
168}
169
170static const char *drm_crtc_fence_get_timeline_name(struct dma_fence *fence)
171{
172 struct drm_crtc *crtc = fence_to_crtc(fence);
173
174 return crtc->timeline_name;
175}
176
177static bool drm_crtc_fence_enable_signaling(struct dma_fence *fence)
178{
179 return true;
180}
181
182static const struct dma_fence_ops drm_crtc_fence_ops = {
183 .get_driver_name = drm_crtc_fence_get_driver_name,
184 .get_timeline_name = drm_crtc_fence_get_timeline_name,
185 .enable_signaling = drm_crtc_fence_enable_signaling,
186 .wait = dma_fence_default_wait,
187};
188
189struct dma_fence *drm_crtc_create_fence(struct drm_crtc *crtc)
190{
191 struct dma_fence *fence;
192
193 fence = kzalloc(sizeof(*fence), GFP_KERNEL);
194 if (!fence)
195 return NULL;
196
197 dma_fence_init(fence, &drm_crtc_fence_ops, &crtc->fence_lock,
198 crtc->fence_context, ++crtc->fence_seqno);
199
200 return fence;
201}
202
203/**
204 * drm_crtc_init_with_planes - Initialise a new CRTC object with
205 * specified primary and cursor planes.
206 * @dev: DRM device
207 * @crtc: CRTC object to init
208 * @primary: Primary plane for CRTC
209 * @cursor: Cursor plane for CRTC
210 * @funcs: callbacks for the new CRTC
211 * @name: printf style format string for the CRTC name, or NULL for default name
212 *
213 * Inits a new object created as base part of a driver crtc object. Drivers
214 * should use this function instead of drm_crtc_init(), which is only provided
215 * for backwards compatibility with drivers which do not yet support universal
216 * planes). For really simple hardware which has only 1 plane look at
217 * drm_simple_display_pipe_init() instead.
218 *
219 * Returns:
220 * Zero on success, error code on failure.
221 */
222int drm_crtc_init_with_planes(struct drm_device *dev, struct drm_crtc *crtc,
223 struct drm_plane *primary,
224 struct drm_plane *cursor,
225 const struct drm_crtc_funcs *funcs,
226 const char *name, ...)
227{
228 struct drm_mode_config *config = &dev->mode_config;
229 int ret;
230
231 WARN_ON(primary && primary->type != DRM_PLANE_TYPE_PRIMARY);
232 WARN_ON(cursor && cursor->type != DRM_PLANE_TYPE_CURSOR);
233
234 crtc->dev = dev;
235 crtc->funcs = funcs;
236
237 INIT_LIST_HEAD(&crtc->commit_list);
238 spin_lock_init(&crtc->commit_lock);
239
240 drm_modeset_lock_init(&crtc->mutex);
241 ret = drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC);
242 if (ret)
243 return ret;
244
245 if (name) {
246 va_list ap;
247
248 va_start(ap, name);
249 crtc->name = kvasprintf(GFP_KERNEL, name, ap);
250 va_end(ap);
251 } else {
252 crtc->name = kasprintf(GFP_KERNEL, "crtc-%d",
253 drm_num_crtcs(dev));
254 }
255 if (!crtc->name) {
256 drm_mode_object_unregister(dev, &crtc->base);
257 return -ENOMEM;
258 }
259
260 crtc->fence_context = dma_fence_context_alloc(1);
261 spin_lock_init(&crtc->fence_lock);
262 snprintf(crtc->timeline_name, sizeof(crtc->timeline_name),
263 "CRTC:%d-%s", crtc->base.id, crtc->name);
264
265 crtc->base.properties = &crtc->properties;
266
267 list_add_tail(&crtc->head, &config->crtc_list);
268 crtc->index = config->num_crtc++;
269
270 crtc->primary = primary;
271 crtc->cursor = cursor;
272 if (primary && !primary->possible_crtcs)
273 primary->possible_crtcs = 1 << drm_crtc_index(crtc);
274 if (cursor && !cursor->possible_crtcs)
275 cursor->possible_crtcs = 1 << drm_crtc_index(crtc);
276
277 ret = drm_crtc_crc_init(crtc);
278 if (ret) {
279 drm_mode_object_unregister(dev, &crtc->base);
280 return ret;
281 }
282
283 if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
284 drm_object_attach_property(&crtc->base, config->prop_active, 0);
285 drm_object_attach_property(&crtc->base, config->prop_mode_id, 0);
286 drm_object_attach_property(&crtc->base,
287 config->prop_out_fence_ptr, 0);
288 }
289
290 return 0;
291}
292EXPORT_SYMBOL(drm_crtc_init_with_planes);
293
294/**
295 * drm_crtc_cleanup - Clean up the core crtc usage
296 * @crtc: CRTC to cleanup
297 *
298 * This function cleans up @crtc and removes it from the DRM mode setting
299 * core. Note that the function does *not* free the crtc structure itself,
300 * this is the responsibility of the caller.
301 */
302void drm_crtc_cleanup(struct drm_crtc *crtc)
303{
304 struct drm_device *dev = crtc->dev;
305
306 /* Note that the crtc_list is considered to be static; should we
307 * remove the drm_crtc at runtime we would have to decrement all
308 * the indices on the drm_crtc after us in the crtc_list.
309 */
310
311 drm_crtc_crc_fini(crtc);
312
313 kfree(crtc->gamma_store);
314 crtc->gamma_store = NULL;
315
316 drm_modeset_lock_fini(&crtc->mutex);
317
318 drm_mode_object_unregister(dev, &crtc->base);
319 list_del(&crtc->head);
320 dev->mode_config.num_crtc--;
321
322 WARN_ON(crtc->state && !crtc->funcs->atomic_destroy_state);
323 if (crtc->state && crtc->funcs->atomic_destroy_state)
324 crtc->funcs->atomic_destroy_state(crtc, crtc->state);
325
326 kfree(crtc->name);
327
328 memset(crtc, 0, sizeof(*crtc));
329}
330EXPORT_SYMBOL(drm_crtc_cleanup);
331
332/**
333 * drm_mode_getcrtc - get CRTC configuration
334 * @dev: drm device for the ioctl
335 * @data: data pointer for the ioctl
336 * @file_priv: drm file for the ioctl call
337 *
338 * Construct a CRTC configuration structure to return to the user.
339 *
340 * Called by the user via ioctl.
341 *
342 * Returns:
343 * Zero on success, negative errno on failure.
344 */
345int drm_mode_getcrtc(struct drm_device *dev,
346 void *data, struct drm_file *file_priv)
347{
348 struct drm_mode_crtc *crtc_resp = data;
349 struct drm_crtc *crtc;
350
351 if (!drm_core_check_feature(dev, DRIVER_MODESET))
352 return -EINVAL;
353
354 crtc = drm_crtc_find(dev, crtc_resp->crtc_id);
355 if (!crtc)
356 return -ENOENT;
357
358 drm_modeset_lock_crtc(crtc, crtc->primary);
359 crtc_resp->gamma_size = crtc->gamma_size;
360 if (crtc->primary->fb)
361 crtc_resp->fb_id = crtc->primary->fb->base.id;
362 else
363 crtc_resp->fb_id = 0;
364
365 if (crtc->state) {
366 crtc_resp->x = crtc->primary->state->src_x >> 16;
367 crtc_resp->y = crtc->primary->state->src_y >> 16;
368 if (crtc->state->enable) {
369 drm_mode_convert_to_umode(&crtc_resp->mode, &crtc->state->mode);
370 crtc_resp->mode_valid = 1;
371
372 } else {
373 crtc_resp->mode_valid = 0;
374 }
375 } else {
376 crtc_resp->x = crtc->x;
377 crtc_resp->y = crtc->y;
378 if (crtc->enabled) {
379 drm_mode_convert_to_umode(&crtc_resp->mode, &crtc->mode);
380 crtc_resp->mode_valid = 1;
381
382 } else {
383 crtc_resp->mode_valid = 0;
384 }
385 }
386 drm_modeset_unlock_crtc(crtc);
387
388 return 0;
389}
390
391/**
392 * drm_mode_set_config_internal - helper to call ->set_config
393 * @set: modeset config to set
394 *
395 * This is a little helper to wrap internal calls to the ->set_config driver
396 * interface. The only thing it adds is correct refcounting dance.
397 *
398 * Returns:
399 * Zero on success, negative errno on failure.
400 */
401int drm_mode_set_config_internal(struct drm_mode_set *set)
402{
403 struct drm_crtc *crtc = set->crtc;
404 struct drm_framebuffer *fb;
405 struct drm_crtc *tmp;
406 int ret;
407
408 /*
409 * NOTE: ->set_config can also disable other crtcs (if we steal all
410 * connectors from it), hence we need to refcount the fbs across all
411 * crtcs. Atomic modeset will have saner semantics ...
412 */
413 drm_for_each_crtc(tmp, crtc->dev)
414 tmp->primary->old_fb = tmp->primary->fb;
415
416 fb = set->fb;
417
418 ret = crtc->funcs->set_config(set);
419 if (ret == 0) {
420 crtc->primary->crtc = crtc;
421 crtc->primary->fb = fb;
422 }
423
424 drm_for_each_crtc(tmp, crtc->dev) {
425 if (tmp->primary->fb)
426 drm_framebuffer_reference(tmp->primary->fb);
427 if (tmp->primary->old_fb)
428 drm_framebuffer_unreference(tmp->primary->old_fb);
429 tmp->primary->old_fb = NULL;
430 }
431
432 return ret;
433}
434EXPORT_SYMBOL(drm_mode_set_config_internal);
435
436/**
437 * drm_crtc_get_hv_timing - Fetches hdisplay/vdisplay for given mode
438 * @mode: mode to query
439 * @hdisplay: hdisplay value to fill in
440 * @vdisplay: vdisplay value to fill in
441 *
442 * The vdisplay value will be doubled if the specified mode is a stereo mode of
443 * the appropriate layout.
444 */
445void drm_crtc_get_hv_timing(const struct drm_display_mode *mode,
446 int *hdisplay, int *vdisplay)
447{
448 struct drm_display_mode adjusted;
449
450 drm_mode_copy(&adjusted, mode);
451 drm_mode_set_crtcinfo(&adjusted, CRTC_STEREO_DOUBLE_ONLY);
452 *hdisplay = adjusted.crtc_hdisplay;
453 *vdisplay = adjusted.crtc_vdisplay;
454}
455EXPORT_SYMBOL(drm_crtc_get_hv_timing);
456
457/**
458 * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the
459 * CRTC viewport
460 * @crtc: CRTC that framebuffer will be displayed on
461 * @x: x panning
462 * @y: y panning
463 * @mode: mode that framebuffer will be displayed under
464 * @fb: framebuffer to check size of
465 */
466int drm_crtc_check_viewport(const struct drm_crtc *crtc,
467 int x, int y,
468 const struct drm_display_mode *mode,
469 const struct drm_framebuffer *fb)
470
471{
472 int hdisplay, vdisplay;
473
474 drm_crtc_get_hv_timing(mode, &hdisplay, &vdisplay);
475
476 if (crtc->state &&
477 drm_rotation_90_or_270(crtc->primary->state->rotation))
478 swap(hdisplay, vdisplay);
479
480 return drm_framebuffer_check_src_coords(x << 16, y << 16,
481 hdisplay << 16, vdisplay << 16,
482 fb);
483}
484EXPORT_SYMBOL(drm_crtc_check_viewport);
485
486/**
487 * drm_mode_setcrtc - set CRTC configuration
488 * @dev: drm device for the ioctl
489 * @data: data pointer for the ioctl
490 * @file_priv: drm file for the ioctl call
491 *
492 * Build a new CRTC configuration based on user request.
493 *
494 * Called by the user via ioctl.
495 *
496 * Returns:
497 * Zero on success, negative errno on failure.
498 */
499int drm_mode_setcrtc(struct drm_device *dev, void *data,
500 struct drm_file *file_priv)
501{
502 struct drm_mode_config *config = &dev->mode_config;
503 struct drm_mode_crtc *crtc_req = data;
504 struct drm_crtc *crtc;
505 struct drm_connector **connector_set = NULL, *connector;
506 struct drm_framebuffer *fb = NULL;
507 struct drm_display_mode *mode = NULL;
508 struct drm_mode_set set;
509 uint32_t __user *set_connectors_ptr;
510 int ret;
511 int i;
512
513 if (!drm_core_check_feature(dev, DRIVER_MODESET))
514 return -EINVAL;
515
516 /*
517 * Universal plane src offsets are only 16.16, prevent havoc for
518 * drivers using universal plane code internally.
519 */
520 if (crtc_req->x & 0xffff0000 || crtc_req->y & 0xffff0000)
521 return -ERANGE;
522
523 drm_modeset_lock_all(dev);
524 crtc = drm_crtc_find(dev, crtc_req->crtc_id);
525 if (!crtc) {
526 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
527 ret = -ENOENT;
528 goto out;
529 }
530 DRM_DEBUG_KMS("[CRTC:%d:%s]\n", crtc->base.id, crtc->name);
531
532 if (crtc_req->mode_valid) {
533 /* If we have a mode we need a framebuffer. */
534 /* If we pass -1, set the mode with the currently bound fb */
535 if (crtc_req->fb_id == -1) {
536 if (!crtc->primary->fb) {
537 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
538 ret = -EINVAL;
539 goto out;
540 }
541 fb = crtc->primary->fb;
542 /* Make refcounting symmetric with the lookup path. */
543 drm_framebuffer_reference(fb);
544 } else {
545 fb = drm_framebuffer_lookup(dev, crtc_req->fb_id);
546 if (!fb) {
547 DRM_DEBUG_KMS("Unknown FB ID%d\n",
548 crtc_req->fb_id);
549 ret = -ENOENT;
550 goto out;
551 }
552 }
553
554 mode = drm_mode_create(dev);
555 if (!mode) {
556 ret = -ENOMEM;
557 goto out;
558 }
559
560 ret = drm_mode_convert_umode(mode, &crtc_req->mode);
561 if (ret) {
562 DRM_DEBUG_KMS("Invalid mode\n");
563 goto out;
564 }
565
566 /*
567 * Check whether the primary plane supports the fb pixel format.
568 * Drivers not implementing the universal planes API use a
569 * default formats list provided by the DRM core which doesn't
570 * match real hardware capabilities. Skip the check in that
571 * case.
572 */
573 if (!crtc->primary->format_default) {
574 ret = drm_plane_check_pixel_format(crtc->primary,
575 fb->pixel_format);
576 if (ret) {
577 struct drm_format_name_buf format_name;
578 DRM_DEBUG_KMS("Invalid pixel format %s\n",
579 drm_get_format_name(fb->pixel_format,
580 &format_name));
581 goto out;
582 }
583 }
584
585 ret = drm_crtc_check_viewport(crtc, crtc_req->x, crtc_req->y,
586 mode, fb);
587 if (ret)
588 goto out;
589
590 }
591
592 if (crtc_req->count_connectors == 0 && mode) {
593 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
594 ret = -EINVAL;
595 goto out;
596 }
597
598 if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
599 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
600 crtc_req->count_connectors);
601 ret = -EINVAL;
602 goto out;
603 }
604
605 if (crtc_req->count_connectors > 0) {
606 u32 out_id;
607
608 /* Avoid unbounded kernel memory allocation */
609 if (crtc_req->count_connectors > config->num_connector) {
610 ret = -EINVAL;
611 goto out;
612 }
613
614 connector_set = kmalloc_array(crtc_req->count_connectors,
615 sizeof(struct drm_connector *),
616 GFP_KERNEL);
617 if (!connector_set) {
618 ret = -ENOMEM;
619 goto out;
620 }
621
622 for (i = 0; i < crtc_req->count_connectors; i++) {
623 connector_set[i] = NULL;
624 set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr;
625 if (get_user(out_id, &set_connectors_ptr[i])) {
626 ret = -EFAULT;
627 goto out;
628 }
629
630 connector = drm_connector_lookup(dev, out_id);
631 if (!connector) {
632 DRM_DEBUG_KMS("Connector id %d unknown\n",
633 out_id);
634 ret = -ENOENT;
635 goto out;
636 }
637 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
638 connector->base.id,
639 connector->name);
640
641 connector_set[i] = connector;
642 }
643 }
644
645 set.crtc = crtc;
646 set.x = crtc_req->x;
647 set.y = crtc_req->y;
648 set.mode = mode;
649 set.connectors = connector_set;
650 set.num_connectors = crtc_req->count_connectors;
651 set.fb = fb;
652 ret = drm_mode_set_config_internal(&set);
653
654out:
655 if (fb)
656 drm_framebuffer_unreference(fb);
657
658 if (connector_set) {
659 for (i = 0; i < crtc_req->count_connectors; i++) {
660 if (connector_set[i])
661 drm_connector_unreference(connector_set[i]);
662 }
663 }
664 kfree(connector_set);
665 drm_mode_destroy(dev, mode);
666 drm_modeset_unlock_all(dev);
667 return ret;
668}
669
670int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
671 struct drm_property *property,
672 uint64_t value)
673{
674 int ret = -EINVAL;
675 struct drm_crtc *crtc = obj_to_crtc(obj);
676
677 if (crtc->funcs->set_property)
678 ret = crtc->funcs->set_property(crtc, property, value);
679 if (!ret)
680 drm_object_property_set_value(obj, property, value);
681
682 return ret;
683}