2 * Copyright (C) 2014 Red Hat
3 * Copyright (C) 2014 Intel Corp.
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
12 * The above copyright notice and this permission notice shall be included in
13 * all copies or substantial portions of the Software.
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
19 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
20 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
21 * OTHER DEALINGS IN THE SOFTWARE.
24 * Rob Clark <robdclark@gmail.com>
25 * Daniel Vetter <daniel.vetter@ffwll.ch>
30 #include <drm/drm_atomic.h>
31 #include <drm/drm_mode.h>
32 #include <drm/drm_plane_helper.h>
34 #include "drm_crtc_internal.h"
36 static void crtc_commit_free(struct kref *kref)
38 struct drm_crtc_commit *commit =
39 container_of(kref, struct drm_crtc_commit, ref);
44 void drm_crtc_commit_put(struct drm_crtc_commit *commit)
46 kref_put(&commit->ref, crtc_commit_free);
48 EXPORT_SYMBOL(drm_crtc_commit_put);
51 * drm_atomic_state_default_release -
52 * release memory initialized by drm_atomic_state_init
53 * @state: atomic state
55 * Free all the memory allocated by drm_atomic_state_init.
56 * This is useful for drivers that subclass the atomic state.
58 void drm_atomic_state_default_release(struct drm_atomic_state *state)
60 kfree(state->connectors);
64 EXPORT_SYMBOL(drm_atomic_state_default_release);
67 * drm_atomic_state_init - init new atomic state
69 * @state: atomic state
71 * Default implementation for filling in a new atomic state.
72 * This is useful for drivers that subclass the atomic state.
75 drm_atomic_state_init(struct drm_device *dev, struct drm_atomic_state *state)
77 kref_init(&state->ref);
79 /* TODO legacy paths should maybe do a better job about
80 * setting this appropriately?
82 state->allow_modeset = true;
84 state->crtcs = kcalloc(dev->mode_config.num_crtc,
85 sizeof(*state->crtcs), GFP_KERNEL);
88 state->planes = kcalloc(dev->mode_config.num_total_plane,
89 sizeof(*state->planes), GFP_KERNEL);
95 DRM_DEBUG_ATOMIC("Allocated atomic state %p\n", state);
99 drm_atomic_state_default_release(state);
102 EXPORT_SYMBOL(drm_atomic_state_init);
105 * drm_atomic_state_alloc - allocate atomic state
108 * This allocates an empty atomic state to track updates.
110 struct drm_atomic_state *
111 drm_atomic_state_alloc(struct drm_device *dev)
113 struct drm_mode_config *config = &dev->mode_config;
114 struct drm_atomic_state *state;
116 if (!config->funcs->atomic_state_alloc) {
117 state = kzalloc(sizeof(*state), GFP_KERNEL);
120 if (drm_atomic_state_init(dev, state) < 0) {
127 return config->funcs->atomic_state_alloc(dev);
129 EXPORT_SYMBOL(drm_atomic_state_alloc);
132 * drm_atomic_state_default_clear - clear base atomic state
133 * @state: atomic state
135 * Default implementation for clearing atomic state.
136 * This is useful for drivers that subclass the atomic state.
138 void drm_atomic_state_default_clear(struct drm_atomic_state *state)
140 struct drm_device *dev = state->dev;
141 struct drm_mode_config *config = &dev->mode_config;
144 DRM_DEBUG_ATOMIC("Clearing atomic state %p\n", state);
146 for (i = 0; i < state->num_connector; i++) {
147 struct drm_connector *connector = state->connectors[i].ptr;
152 connector->funcs->atomic_destroy_state(connector,
153 state->connectors[i].state);
154 state->connectors[i].ptr = NULL;
155 state->connectors[i].state = NULL;
156 drm_connector_unreference(connector);
159 for (i = 0; i < config->num_crtc; i++) {
160 struct drm_crtc *crtc = state->crtcs[i].ptr;
165 crtc->funcs->atomic_destroy_state(crtc,
166 state->crtcs[i].state);
168 if (state->crtcs[i].commit) {
169 kfree(state->crtcs[i].commit->event);
170 state->crtcs[i].commit->event = NULL;
171 drm_crtc_commit_put(state->crtcs[i].commit);
174 state->crtcs[i].commit = NULL;
175 state->crtcs[i].ptr = NULL;
176 state->crtcs[i].state = NULL;
179 for (i = 0; i < config->num_total_plane; i++) {
180 struct drm_plane *plane = state->planes[i].ptr;
185 plane->funcs->atomic_destroy_state(plane,
186 state->planes[i].state);
187 state->planes[i].ptr = NULL;
188 state->planes[i].state = NULL;
191 EXPORT_SYMBOL(drm_atomic_state_default_clear);
194 * drm_atomic_state_clear - clear state object
195 * @state: atomic state
197 * When the w/w mutex algorithm detects a deadlock we need to back off and drop
198 * all locks. So someone else could sneak in and change the current modeset
199 * configuration. Which means that all the state assembled in @state is no
200 * longer an atomic update to the current state, but to some arbitrary earlier
201 * state. Which could break assumptions the driver's ->atomic_check likely
204 * Hence we must clear all cached state and completely start over, using this
207 void drm_atomic_state_clear(struct drm_atomic_state *state)
209 struct drm_device *dev = state->dev;
210 struct drm_mode_config *config = &dev->mode_config;
212 if (config->funcs->atomic_state_clear)
213 config->funcs->atomic_state_clear(state);
215 drm_atomic_state_default_clear(state);
217 EXPORT_SYMBOL(drm_atomic_state_clear);
220 * __drm_atomic_state_free - free all memory for an atomic state
221 * @ref: This atomic state to deallocate
223 * This frees all memory associated with an atomic state, including all the
224 * per-object state for planes, crtcs and connectors.
226 void __drm_atomic_state_free(struct kref *ref)
228 struct drm_atomic_state *state = container_of(ref, typeof(*state), ref);
229 struct drm_mode_config *config = &state->dev->mode_config;
231 drm_atomic_state_clear(state);
233 DRM_DEBUG_ATOMIC("Freeing atomic state %p\n", state);
235 if (config->funcs->atomic_state_free) {
236 config->funcs->atomic_state_free(state);
238 drm_atomic_state_default_release(state);
242 EXPORT_SYMBOL(__drm_atomic_state_free);
245 * drm_atomic_get_crtc_state - get crtc state
246 * @state: global atomic state object
247 * @crtc: crtc to get state object for
249 * This function returns the crtc state for the given crtc, allocating it if
250 * needed. It will also grab the relevant crtc lock to make sure that the state
255 * Either the allocated state or the error code encoded into the pointer. When
256 * the error is EDEADLK then the w/w mutex code has detected a deadlock and the
257 * entire atomic sequence must be restarted. All other errors are fatal.
259 struct drm_crtc_state *
260 drm_atomic_get_crtc_state(struct drm_atomic_state *state,
261 struct drm_crtc *crtc)
263 int ret, index = drm_crtc_index(crtc);
264 struct drm_crtc_state *crtc_state;
266 WARN_ON(!state->acquire_ctx);
268 crtc_state = drm_atomic_get_existing_crtc_state(state, crtc);
272 ret = drm_modeset_lock(&crtc->mutex, state->acquire_ctx);
276 crtc_state = crtc->funcs->atomic_duplicate_state(crtc);
278 return ERR_PTR(-ENOMEM);
280 state->crtcs[index].state = crtc_state;
281 state->crtcs[index].ptr = crtc;
282 crtc_state->state = state;
284 DRM_DEBUG_ATOMIC("Added [CRTC:%d:%s] %p state to %p\n",
285 crtc->base.id, crtc->name, crtc_state, state);
289 EXPORT_SYMBOL(drm_atomic_get_crtc_state);
292 * drm_atomic_set_mode_for_crtc - set mode for CRTC
293 * @state: the CRTC whose incoming state to update
294 * @mode: kernel-internal mode to use for the CRTC, or NULL to disable
296 * Set a mode (originating from the kernel) on the desired CRTC state. Does
297 * not change any other state properties, including enable, active, or
301 * Zero on success, error code on failure. Cannot return -EDEADLK.
303 int drm_atomic_set_mode_for_crtc(struct drm_crtc_state *state,
304 struct drm_display_mode *mode)
306 struct drm_mode_modeinfo umode;
308 /* Early return for no change. */
309 if (mode && memcmp(&state->mode, mode, sizeof(*mode)) == 0)
312 drm_property_unreference_blob(state->mode_blob);
313 state->mode_blob = NULL;
316 drm_mode_convert_to_umode(&umode, mode);
318 drm_property_create_blob(state->crtc->dev,
321 if (IS_ERR(state->mode_blob))
322 return PTR_ERR(state->mode_blob);
324 drm_mode_copy(&state->mode, mode);
325 state->enable = true;
326 DRM_DEBUG_ATOMIC("Set [MODE:%s] for CRTC state %p\n",
329 memset(&state->mode, 0, sizeof(state->mode));
330 state->enable = false;
331 DRM_DEBUG_ATOMIC("Set [NOMODE] for CRTC state %p\n",
337 EXPORT_SYMBOL(drm_atomic_set_mode_for_crtc);
340 * drm_atomic_set_mode_prop_for_crtc - set mode for CRTC
341 * @state: the CRTC whose incoming state to update
342 * @blob: pointer to blob property to use for mode
344 * Set a mode (originating from a blob property) on the desired CRTC state.
345 * This function will take a reference on the blob property for the CRTC state,
346 * and release the reference held on the state's existing mode property, if any
350 * Zero on success, error code on failure. Cannot return -EDEADLK.
352 int drm_atomic_set_mode_prop_for_crtc(struct drm_crtc_state *state,
353 struct drm_property_blob *blob)
355 if (blob == state->mode_blob)
358 drm_property_unreference_blob(state->mode_blob);
359 state->mode_blob = NULL;
361 memset(&state->mode, 0, sizeof(state->mode));
364 if (blob->length != sizeof(struct drm_mode_modeinfo) ||
365 drm_mode_convert_umode(&state->mode,
366 (const struct drm_mode_modeinfo *)
370 state->mode_blob = drm_property_reference_blob(blob);
371 state->enable = true;
372 DRM_DEBUG_ATOMIC("Set [MODE:%s] for CRTC state %p\n",
373 state->mode.name, state);
375 state->enable = false;
376 DRM_DEBUG_ATOMIC("Set [NOMODE] for CRTC state %p\n",
382 EXPORT_SYMBOL(drm_atomic_set_mode_prop_for_crtc);
385 * drm_atomic_replace_property_blob - replace a blob property
386 * @blob: a pointer to the member blob to be replaced
387 * @new_blob: the new blob to replace with
388 * @replaced: whether the blob has been replaced
391 * Zero on success, error code on failure
394 drm_atomic_replace_property_blob(struct drm_property_blob **blob,
395 struct drm_property_blob *new_blob,
398 struct drm_property_blob *old_blob = *blob;
400 if (old_blob == new_blob)
403 drm_property_unreference_blob(old_blob);
405 drm_property_reference_blob(new_blob);
413 drm_atomic_replace_property_blob_from_id(struct drm_crtc *crtc,
414 struct drm_property_blob **blob,
416 ssize_t expected_size,
419 struct drm_device *dev = crtc->dev;
420 struct drm_property_blob *new_blob = NULL;
423 new_blob = drm_property_lookup_blob(dev, blob_id);
424 if (new_blob == NULL)
426 if (expected_size > 0 && expected_size != new_blob->length)
430 drm_atomic_replace_property_blob(blob, new_blob, replaced);
436 * drm_atomic_crtc_set_property - set property on CRTC
437 * @crtc: the drm CRTC to set a property on
438 * @state: the state object to update with the new property value
439 * @property: the property to set
440 * @val: the new property value
442 * Use this instead of calling crtc->atomic_set_property directly.
443 * This function handles generic/core properties and calls out to
444 * driver's ->atomic_set_property() for driver properties. To ensure
445 * consistent behavior you must call this function rather than the
446 * driver hook directly.
449 * Zero on success, error code on failure
451 int drm_atomic_crtc_set_property(struct drm_crtc *crtc,
452 struct drm_crtc_state *state, struct drm_property *property,
455 struct drm_device *dev = crtc->dev;
456 struct drm_mode_config *config = &dev->mode_config;
457 bool replaced = false;
460 if (property == config->prop_active)
462 else if (property == config->prop_mode_id) {
463 struct drm_property_blob *mode =
464 drm_property_lookup_blob(dev, val);
465 ret = drm_atomic_set_mode_prop_for_crtc(state, mode);
466 drm_property_unreference_blob(mode);
468 } else if (property == config->degamma_lut_property) {
469 ret = drm_atomic_replace_property_blob_from_id(crtc,
474 state->color_mgmt_changed |= replaced;
476 } else if (property == config->ctm_property) {
477 ret = drm_atomic_replace_property_blob_from_id(crtc,
480 sizeof(struct drm_color_ctm),
482 state->color_mgmt_changed |= replaced;
484 } else if (property == config->gamma_lut_property) {
485 ret = drm_atomic_replace_property_blob_from_id(crtc,
490 state->color_mgmt_changed |= replaced;
492 } else if (crtc->funcs->atomic_set_property)
493 return crtc->funcs->atomic_set_property(crtc, state, property, val);
499 EXPORT_SYMBOL(drm_atomic_crtc_set_property);
502 * drm_atomic_crtc_get_property - get property value from CRTC state
503 * @crtc: the drm CRTC to set a property on
504 * @state: the state object to get the property value from
505 * @property: the property to set
506 * @val: return location for the property value
508 * This function handles generic/core properties and calls out to
509 * driver's ->atomic_get_property() for driver properties. To ensure
510 * consistent behavior you must call this function rather than the
511 * driver hook directly.
514 * Zero on success, error code on failure
517 drm_atomic_crtc_get_property(struct drm_crtc *crtc,
518 const struct drm_crtc_state *state,
519 struct drm_property *property, uint64_t *val)
521 struct drm_device *dev = crtc->dev;
522 struct drm_mode_config *config = &dev->mode_config;
524 if (property == config->prop_active)
525 *val = state->active;
526 else if (property == config->prop_mode_id)
527 *val = (state->mode_blob) ? state->mode_blob->base.id : 0;
528 else if (property == config->degamma_lut_property)
529 *val = (state->degamma_lut) ? state->degamma_lut->base.id : 0;
530 else if (property == config->ctm_property)
531 *val = (state->ctm) ? state->ctm->base.id : 0;
532 else if (property == config->gamma_lut_property)
533 *val = (state->gamma_lut) ? state->gamma_lut->base.id : 0;
534 else if (crtc->funcs->atomic_get_property)
535 return crtc->funcs->atomic_get_property(crtc, state, property, val);
543 * drm_atomic_crtc_check - check crtc state
544 * @crtc: crtc to check
545 * @state: crtc state to check
547 * Provides core sanity checks for crtc state.
550 * Zero on success, error code on failure
552 static int drm_atomic_crtc_check(struct drm_crtc *crtc,
553 struct drm_crtc_state *state)
555 /* NOTE: we explicitly don't enforce constraints such as primary
556 * layer covering entire screen, since that is something we want
557 * to allow (on hw that supports it). For hw that does not, it
558 * should be checked in driver's crtc->atomic_check() vfunc.
560 * TODO: Add generic modeset state checks once we support those.
563 if (state->active && !state->enable) {
564 DRM_DEBUG_ATOMIC("[CRTC:%d:%s] active without enabled\n",
565 crtc->base.id, crtc->name);
569 /* The state->enable vs. state->mode_blob checks can be WARN_ON,
570 * as this is a kernel-internal detail that userspace should never
571 * be able to trigger. */
572 if (drm_core_check_feature(crtc->dev, DRIVER_ATOMIC) &&
573 WARN_ON(state->enable && !state->mode_blob)) {
574 DRM_DEBUG_ATOMIC("[CRTC:%d:%s] enabled without mode blob\n",
575 crtc->base.id, crtc->name);
579 if (drm_core_check_feature(crtc->dev, DRIVER_ATOMIC) &&
580 WARN_ON(!state->enable && state->mode_blob)) {
581 DRM_DEBUG_ATOMIC("[CRTC:%d:%s] disabled with mode blob\n",
582 crtc->base.id, crtc->name);
587 * Reject event generation for when a CRTC is off and stays off.
588 * It wouldn't be hard to implement this, but userspace has a track
589 * record of happily burning through 100% cpu (or worse, crash) when the
590 * display pipe is suspended. To avoid all that fun just reject updates
591 * that ask for events since likely that indicates a bug in the
592 * compositor's drawing loop. This is consistent with the vblank IOCTL
593 * and legacy page_flip IOCTL which also reject service on a disabled
596 if (state->event && !state->active && !crtc->state->active) {
597 DRM_DEBUG_ATOMIC("[CRTC:%d] requesting event but off\n",
606 * drm_atomic_get_plane_state - get plane state
607 * @state: global atomic state object
608 * @plane: plane to get state object for
610 * This function returns the plane state for the given plane, allocating it if
611 * needed. It will also grab the relevant plane lock to make sure that the state
616 * Either the allocated state or the error code encoded into the pointer. When
617 * the error is EDEADLK then the w/w mutex code has detected a deadlock and the
618 * entire atomic sequence must be restarted. All other errors are fatal.
620 struct drm_plane_state *
621 drm_atomic_get_plane_state(struct drm_atomic_state *state,
622 struct drm_plane *plane)
624 int ret, index = drm_plane_index(plane);
625 struct drm_plane_state *plane_state;
627 WARN_ON(!state->acquire_ctx);
629 plane_state = drm_atomic_get_existing_plane_state(state, plane);
633 ret = drm_modeset_lock(&plane->mutex, state->acquire_ctx);
637 plane_state = plane->funcs->atomic_duplicate_state(plane);
639 return ERR_PTR(-ENOMEM);
641 state->planes[index].state = plane_state;
642 state->planes[index].ptr = plane;
643 plane_state->state = state;
645 DRM_DEBUG_ATOMIC("Added [PLANE:%d:%s] %p state to %p\n",
646 plane->base.id, plane->name, plane_state, state);
648 if (plane_state->crtc) {
649 struct drm_crtc_state *crtc_state;
651 crtc_state = drm_atomic_get_crtc_state(state,
653 if (IS_ERR(crtc_state))
654 return ERR_CAST(crtc_state);
659 EXPORT_SYMBOL(drm_atomic_get_plane_state);
662 * drm_atomic_plane_set_property - set property on plane
663 * @plane: the drm plane to set a property on
664 * @state: the state object to update with the new property value
665 * @property: the property to set
666 * @val: the new property value
668 * Use this instead of calling plane->atomic_set_property directly.
669 * This function handles generic/core properties and calls out to
670 * driver's ->atomic_set_property() for driver properties. To ensure
671 * consistent behavior you must call this function rather than the
672 * driver hook directly.
675 * Zero on success, error code on failure
677 int drm_atomic_plane_set_property(struct drm_plane *plane,
678 struct drm_plane_state *state, struct drm_property *property,
681 struct drm_device *dev = plane->dev;
682 struct drm_mode_config *config = &dev->mode_config;
684 if (property == config->prop_fb_id) {
685 struct drm_framebuffer *fb = drm_framebuffer_lookup(dev, val);
686 drm_atomic_set_fb_for_plane(state, fb);
688 drm_framebuffer_unreference(fb);
689 } else if (property == config->prop_crtc_id) {
690 struct drm_crtc *crtc = drm_crtc_find(dev, val);
691 return drm_atomic_set_crtc_for_plane(state, crtc);
692 } else if (property == config->prop_crtc_x) {
693 state->crtc_x = U642I64(val);
694 } else if (property == config->prop_crtc_y) {
695 state->crtc_y = U642I64(val);
696 } else if (property == config->prop_crtc_w) {
698 } else if (property == config->prop_crtc_h) {
700 } else if (property == config->prop_src_x) {
702 } else if (property == config->prop_src_y) {
704 } else if (property == config->prop_src_w) {
706 } else if (property == config->prop_src_h) {
708 } else if (property == config->rotation_property) {
709 state->rotation = val;
710 } else if (property == plane->zpos_property) {
712 } else if (plane->funcs->atomic_set_property) {
713 return plane->funcs->atomic_set_property(plane, state,
721 EXPORT_SYMBOL(drm_atomic_plane_set_property);
724 * drm_atomic_plane_get_property - get property value from plane state
725 * @plane: the drm plane to set a property on
726 * @state: the state object to get the property value from
727 * @property: the property to set
728 * @val: return location for the property value
730 * This function handles generic/core properties and calls out to
731 * driver's ->atomic_get_property() for driver properties. To ensure
732 * consistent behavior you must call this function rather than the
733 * driver hook directly.
736 * Zero on success, error code on failure
739 drm_atomic_plane_get_property(struct drm_plane *plane,
740 const struct drm_plane_state *state,
741 struct drm_property *property, uint64_t *val)
743 struct drm_device *dev = plane->dev;
744 struct drm_mode_config *config = &dev->mode_config;
746 if (property == config->prop_fb_id) {
747 *val = (state->fb) ? state->fb->base.id : 0;
748 } else if (property == config->prop_crtc_id) {
749 *val = (state->crtc) ? state->crtc->base.id : 0;
750 } else if (property == config->prop_crtc_x) {
751 *val = I642U64(state->crtc_x);
752 } else if (property == config->prop_crtc_y) {
753 *val = I642U64(state->crtc_y);
754 } else if (property == config->prop_crtc_w) {
755 *val = state->crtc_w;
756 } else if (property == config->prop_crtc_h) {
757 *val = state->crtc_h;
758 } else if (property == config->prop_src_x) {
760 } else if (property == config->prop_src_y) {
762 } else if (property == config->prop_src_w) {
764 } else if (property == config->prop_src_h) {
766 } else if (property == config->rotation_property) {
767 *val = state->rotation;
768 } else if (property == plane->zpos_property) {
770 } else if (plane->funcs->atomic_get_property) {
771 return plane->funcs->atomic_get_property(plane, state, property, val);
780 plane_switching_crtc(struct drm_atomic_state *state,
781 struct drm_plane *plane,
782 struct drm_plane_state *plane_state)
784 if (!plane->state->crtc || !plane_state->crtc)
787 if (plane->state->crtc == plane_state->crtc)
790 /* This could be refined, but currently there's no helper or driver code
791 * to implement direct switching of active planes nor userspace to take
792 * advantage of more direct plane switching without the intermediate
799 * drm_atomic_plane_check - check plane state
800 * @plane: plane to check
801 * @state: plane state to check
803 * Provides core sanity checks for plane state.
806 * Zero on success, error code on failure
808 static int drm_atomic_plane_check(struct drm_plane *plane,
809 struct drm_plane_state *state)
811 unsigned int fb_width, fb_height;
814 /* either *both* CRTC and FB must be set, or neither */
815 if (WARN_ON(state->crtc && !state->fb)) {
816 DRM_DEBUG_ATOMIC("CRTC set but no FB\n");
818 } else if (WARN_ON(state->fb && !state->crtc)) {
819 DRM_DEBUG_ATOMIC("FB set but no CRTC\n");
823 /* if disabled, we don't care about the rest of the state: */
827 /* Check whether this plane is usable on this CRTC */
828 if (!(plane->possible_crtcs & drm_crtc_mask(state->crtc))) {
829 DRM_DEBUG_ATOMIC("Invalid crtc for plane\n");
833 /* Check whether this plane supports the fb pixel format. */
834 ret = drm_plane_check_pixel_format(plane, state->fb->pixel_format);
836 char *format_name = drm_get_format_name(state->fb->pixel_format);
837 DRM_DEBUG_ATOMIC("Invalid pixel format %s\n", format_name);
842 /* Give drivers some help against integer overflows */
843 if (state->crtc_w > INT_MAX ||
844 state->crtc_x > INT_MAX - (int32_t) state->crtc_w ||
845 state->crtc_h > INT_MAX ||
846 state->crtc_y > INT_MAX - (int32_t) state->crtc_h) {
847 DRM_DEBUG_ATOMIC("Invalid CRTC coordinates %ux%u+%d+%d\n",
848 state->crtc_w, state->crtc_h,
849 state->crtc_x, state->crtc_y);
853 fb_width = state->fb->width << 16;
854 fb_height = state->fb->height << 16;
856 /* Make sure source coordinates are inside the fb. */
857 if (state->src_w > fb_width ||
858 state->src_x > fb_width - state->src_w ||
859 state->src_h > fb_height ||
860 state->src_y > fb_height - state->src_h) {
861 DRM_DEBUG_ATOMIC("Invalid source coordinates "
862 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
863 state->src_w >> 16, ((state->src_w & 0xffff) * 15625) >> 10,
864 state->src_h >> 16, ((state->src_h & 0xffff) * 15625) >> 10,
865 state->src_x >> 16, ((state->src_x & 0xffff) * 15625) >> 10,
866 state->src_y >> 16, ((state->src_y & 0xffff) * 15625) >> 10);
870 if (plane_switching_crtc(state->state, plane, state)) {
871 DRM_DEBUG_ATOMIC("[PLANE:%d:%s] switching CRTC directly\n",
872 plane->base.id, plane->name);
880 * drm_atomic_get_connector_state - get connector state
881 * @state: global atomic state object
882 * @connector: connector to get state object for
884 * This function returns the connector state for the given connector,
885 * allocating it if needed. It will also grab the relevant connector lock to
886 * make sure that the state is consistent.
890 * Either the allocated state or the error code encoded into the pointer. When
891 * the error is EDEADLK then the w/w mutex code has detected a deadlock and the
892 * entire atomic sequence must be restarted. All other errors are fatal.
894 struct drm_connector_state *
895 drm_atomic_get_connector_state(struct drm_atomic_state *state,
896 struct drm_connector *connector)
899 struct drm_mode_config *config = &connector->dev->mode_config;
900 struct drm_connector_state *connector_state;
902 WARN_ON(!state->acquire_ctx);
904 ret = drm_modeset_lock(&config->connection_mutex, state->acquire_ctx);
908 index = drm_connector_index(connector);
910 if (index >= state->num_connector) {
911 struct __drm_connnectors_state *c;
912 int alloc = max(index + 1, config->num_connector);
914 c = krealloc(state->connectors, alloc * sizeof(*state->connectors), GFP_KERNEL);
916 return ERR_PTR(-ENOMEM);
918 state->connectors = c;
919 memset(&state->connectors[state->num_connector], 0,
920 sizeof(*state->connectors) * (alloc - state->num_connector));
922 state->num_connector = alloc;
925 if (state->connectors[index].state)
926 return state->connectors[index].state;
928 connector_state = connector->funcs->atomic_duplicate_state(connector);
929 if (!connector_state)
930 return ERR_PTR(-ENOMEM);
932 drm_connector_reference(connector);
933 state->connectors[index].state = connector_state;
934 state->connectors[index].ptr = connector;
935 connector_state->state = state;
937 DRM_DEBUG_ATOMIC("Added [CONNECTOR:%d] %p state to %p\n",
938 connector->base.id, connector_state, state);
940 if (connector_state->crtc) {
941 struct drm_crtc_state *crtc_state;
943 crtc_state = drm_atomic_get_crtc_state(state,
944 connector_state->crtc);
945 if (IS_ERR(crtc_state))
946 return ERR_CAST(crtc_state);
949 return connector_state;
951 EXPORT_SYMBOL(drm_atomic_get_connector_state);
954 * drm_atomic_connector_set_property - set property on connector.
955 * @connector: the drm connector to set a property on
956 * @state: the state object to update with the new property value
957 * @property: the property to set
958 * @val: the new property value
960 * Use this instead of calling connector->atomic_set_property directly.
961 * This function handles generic/core properties and calls out to
962 * driver's ->atomic_set_property() for driver properties. To ensure
963 * consistent behavior you must call this function rather than the
964 * driver hook directly.
967 * Zero on success, error code on failure
969 int drm_atomic_connector_set_property(struct drm_connector *connector,
970 struct drm_connector_state *state, struct drm_property *property,
973 struct drm_device *dev = connector->dev;
974 struct drm_mode_config *config = &dev->mode_config;
976 if (property == config->prop_crtc_id) {
977 struct drm_crtc *crtc = drm_crtc_find(dev, val);
978 return drm_atomic_set_crtc_for_connector(state, crtc);
979 } else if (property == config->dpms_property) {
980 /* setting DPMS property requires special handling, which
981 * is done in legacy setprop path for us. Disallow (for
982 * now?) atomic writes to DPMS property:
985 } else if (connector->funcs->atomic_set_property) {
986 return connector->funcs->atomic_set_property(connector,
987 state, property, val);
992 EXPORT_SYMBOL(drm_atomic_connector_set_property);
995 * drm_atomic_connector_get_property - get property value from connector state
996 * @connector: the drm connector to set a property on
997 * @state: the state object to get the property value from
998 * @property: the property to set
999 * @val: return location for the property value
1001 * This function handles generic/core properties and calls out to
1002 * driver's ->atomic_get_property() for driver properties. To ensure
1003 * consistent behavior you must call this function rather than the
1004 * driver hook directly.
1007 * Zero on success, error code on failure
1010 drm_atomic_connector_get_property(struct drm_connector *connector,
1011 const struct drm_connector_state *state,
1012 struct drm_property *property, uint64_t *val)
1014 struct drm_device *dev = connector->dev;
1015 struct drm_mode_config *config = &dev->mode_config;
1017 if (property == config->prop_crtc_id) {
1018 *val = (state->crtc) ? state->crtc->base.id : 0;
1019 } else if (property == config->dpms_property) {
1020 *val = connector->dpms;
1021 } else if (connector->funcs->atomic_get_property) {
1022 return connector->funcs->atomic_get_property(connector,
1023 state, property, val);
1031 int drm_atomic_get_property(struct drm_mode_object *obj,
1032 struct drm_property *property, uint64_t *val)
1034 struct drm_device *dev = property->dev;
1037 switch (obj->type) {
1038 case DRM_MODE_OBJECT_CONNECTOR: {
1039 struct drm_connector *connector = obj_to_connector(obj);
1040 WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex));
1041 ret = drm_atomic_connector_get_property(connector,
1042 connector->state, property, val);
1045 case DRM_MODE_OBJECT_CRTC: {
1046 struct drm_crtc *crtc = obj_to_crtc(obj);
1047 WARN_ON(!drm_modeset_is_locked(&crtc->mutex));
1048 ret = drm_atomic_crtc_get_property(crtc,
1049 crtc->state, property, val);
1052 case DRM_MODE_OBJECT_PLANE: {
1053 struct drm_plane *plane = obj_to_plane(obj);
1054 WARN_ON(!drm_modeset_is_locked(&plane->mutex));
1055 ret = drm_atomic_plane_get_property(plane,
1056 plane->state, property, val);
1068 * drm_atomic_set_crtc_for_plane - set crtc for plane
1069 * @plane_state: the plane whose incoming state to update
1070 * @crtc: crtc to use for the plane
1072 * Changing the assigned crtc for a plane requires us to grab the lock and state
1073 * for the new crtc, as needed. This function takes care of all these details
1074 * besides updating the pointer in the state object itself.
1077 * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK
1078 * then the w/w mutex code has detected a deadlock and the entire atomic
1079 * sequence must be restarted. All other errors are fatal.
1082 drm_atomic_set_crtc_for_plane(struct drm_plane_state *plane_state,
1083 struct drm_crtc *crtc)
1085 struct drm_plane *plane = plane_state->plane;
1086 struct drm_crtc_state *crtc_state;
1088 if (plane_state->crtc) {
1089 crtc_state = drm_atomic_get_crtc_state(plane_state->state,
1091 if (WARN_ON(IS_ERR(crtc_state)))
1092 return PTR_ERR(crtc_state);
1094 crtc_state->plane_mask &= ~(1 << drm_plane_index(plane));
1097 plane_state->crtc = crtc;
1100 crtc_state = drm_atomic_get_crtc_state(plane_state->state,
1102 if (IS_ERR(crtc_state))
1103 return PTR_ERR(crtc_state);
1104 crtc_state->plane_mask |= (1 << drm_plane_index(plane));
1108 DRM_DEBUG_ATOMIC("Link plane state %p to [CRTC:%d:%s]\n",
1109 plane_state, crtc->base.id, crtc->name);
1111 DRM_DEBUG_ATOMIC("Link plane state %p to [NOCRTC]\n",
1116 EXPORT_SYMBOL(drm_atomic_set_crtc_for_plane);
1119 * drm_atomic_set_fb_for_plane - set framebuffer for plane
1120 * @plane_state: atomic state object for the plane
1121 * @fb: fb to use for the plane
1123 * Changing the assigned framebuffer for a plane requires us to grab a reference
1124 * to the new fb and drop the reference to the old fb, if there is one. This
1125 * function takes care of all these details besides updating the pointer in the
1126 * state object itself.
1129 drm_atomic_set_fb_for_plane(struct drm_plane_state *plane_state,
1130 struct drm_framebuffer *fb)
1132 if (plane_state->fb)
1133 drm_framebuffer_unreference(plane_state->fb);
1135 drm_framebuffer_reference(fb);
1136 plane_state->fb = fb;
1139 DRM_DEBUG_ATOMIC("Set [FB:%d] for plane state %p\n",
1140 fb->base.id, plane_state);
1142 DRM_DEBUG_ATOMIC("Set [NOFB] for plane state %p\n",
1145 EXPORT_SYMBOL(drm_atomic_set_fb_for_plane);
1148 * drm_atomic_set_crtc_for_connector - set crtc for connector
1149 * @conn_state: atomic state object for the connector
1150 * @crtc: crtc to use for the connector
1152 * Changing the assigned crtc for a connector requires us to grab the lock and
1153 * state for the new crtc, as needed. This function takes care of all these
1154 * details besides updating the pointer in the state object itself.
1157 * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK
1158 * then the w/w mutex code has detected a deadlock and the entire atomic
1159 * sequence must be restarted. All other errors are fatal.
1162 drm_atomic_set_crtc_for_connector(struct drm_connector_state *conn_state,
1163 struct drm_crtc *crtc)
1165 struct drm_crtc_state *crtc_state;
1167 if (conn_state->crtc == crtc)
1170 if (conn_state->crtc) {
1171 crtc_state = drm_atomic_get_existing_crtc_state(conn_state->state,
1174 crtc_state->connector_mask &=
1175 ~(1 << drm_connector_index(conn_state->connector));
1177 drm_connector_unreference(conn_state->connector);
1178 conn_state->crtc = NULL;
1182 crtc_state = drm_atomic_get_crtc_state(conn_state->state, crtc);
1183 if (IS_ERR(crtc_state))
1184 return PTR_ERR(crtc_state);
1186 crtc_state->connector_mask |=
1187 1 << drm_connector_index(conn_state->connector);
1189 drm_connector_reference(conn_state->connector);
1190 conn_state->crtc = crtc;
1192 DRM_DEBUG_ATOMIC("Link connector state %p to [CRTC:%d:%s]\n",
1193 conn_state, crtc->base.id, crtc->name);
1195 DRM_DEBUG_ATOMIC("Link connector state %p to [NOCRTC]\n",
1201 EXPORT_SYMBOL(drm_atomic_set_crtc_for_connector);
1204 * drm_atomic_add_affected_connectors - add connectors for crtc
1205 * @state: atomic state
1208 * This function walks the current configuration and adds all connectors
1209 * currently using @crtc to the atomic configuration @state. Note that this
1210 * function must acquire the connection mutex. This can potentially cause
1211 * unneeded seralization if the update is just for the planes on one crtc. Hence
1212 * drivers and helpers should only call this when really needed (e.g. when a
1213 * full modeset needs to happen due to some change).
1216 * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK
1217 * then the w/w mutex code has detected a deadlock and the entire atomic
1218 * sequence must be restarted. All other errors are fatal.
1221 drm_atomic_add_affected_connectors(struct drm_atomic_state *state,
1222 struct drm_crtc *crtc)
1224 struct drm_mode_config *config = &state->dev->mode_config;
1225 struct drm_connector *connector;
1226 struct drm_connector_state *conn_state;
1229 ret = drm_modeset_lock(&config->connection_mutex, state->acquire_ctx);
1233 DRM_DEBUG_ATOMIC("Adding all current connectors for [CRTC:%d:%s] to %p\n",
1234 crtc->base.id, crtc->name, state);
1237 * Changed connectors are already in @state, so only need to look at the
1238 * current configuration.
1240 drm_for_each_connector(connector, state->dev) {
1241 if (connector->state->crtc != crtc)
1244 conn_state = drm_atomic_get_connector_state(state, connector);
1245 if (IS_ERR(conn_state))
1246 return PTR_ERR(conn_state);
1251 EXPORT_SYMBOL(drm_atomic_add_affected_connectors);
1254 * drm_atomic_add_affected_planes - add planes for crtc
1255 * @state: atomic state
1258 * This function walks the current configuration and adds all planes
1259 * currently used by @crtc to the atomic configuration @state. This is useful
1260 * when an atomic commit also needs to check all currently enabled plane on
1261 * @crtc, e.g. when changing the mode. It's also useful when re-enabling a CRTC
1262 * to avoid special code to force-enable all planes.
1264 * Since acquiring a plane state will always also acquire the w/w mutex of the
1265 * current CRTC for that plane (if there is any) adding all the plane states for
1266 * a CRTC will not reduce parallism of atomic updates.
1269 * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK
1270 * then the w/w mutex code has detected a deadlock and the entire atomic
1271 * sequence must be restarted. All other errors are fatal.
1274 drm_atomic_add_affected_planes(struct drm_atomic_state *state,
1275 struct drm_crtc *crtc)
1277 struct drm_plane *plane;
1279 WARN_ON(!drm_atomic_get_existing_crtc_state(state, crtc));
1281 drm_for_each_plane_mask(plane, state->dev, crtc->state->plane_mask) {
1282 struct drm_plane_state *plane_state =
1283 drm_atomic_get_plane_state(state, plane);
1285 if (IS_ERR(plane_state))
1286 return PTR_ERR(plane_state);
1290 EXPORT_SYMBOL(drm_atomic_add_affected_planes);
1293 * drm_atomic_legacy_backoff - locking backoff for legacy ioctls
1294 * @state: atomic state
1296 * This function should be used by legacy entry points which don't understand
1297 * -EDEADLK semantics. For simplicity this one will grab all modeset locks after
1298 * the slowpath completed.
1300 void drm_atomic_legacy_backoff(struct drm_atomic_state *state)
1302 struct drm_device *dev = state->dev;
1303 unsigned crtc_mask = 0;
1304 struct drm_crtc *crtc;
1306 bool global = false;
1308 drm_for_each_crtc(crtc, dev) {
1309 if (crtc->acquire_ctx != state->acquire_ctx)
1312 crtc_mask |= drm_crtc_mask(crtc);
1313 crtc->acquire_ctx = NULL;
1316 if (WARN_ON(dev->mode_config.acquire_ctx == state->acquire_ctx)) {
1319 dev->mode_config.acquire_ctx = NULL;
1323 drm_modeset_backoff(state->acquire_ctx);
1325 ret = drm_modeset_lock_all_ctx(dev, state->acquire_ctx);
1329 drm_for_each_crtc(crtc, dev)
1330 if (drm_crtc_mask(crtc) & crtc_mask)
1331 crtc->acquire_ctx = state->acquire_ctx;
1334 dev->mode_config.acquire_ctx = state->acquire_ctx;
1336 EXPORT_SYMBOL(drm_atomic_legacy_backoff);
1339 * drm_atomic_check_only - check whether a given config would work
1340 * @state: atomic configuration to check
1342 * Note that this function can return -EDEADLK if the driver needed to acquire
1343 * more locks but encountered a deadlock. The caller must then do the usual w/w
1344 * backoff dance and restart. All other errors are fatal.
1347 * 0 on success, negative error code on failure.
1349 int drm_atomic_check_only(struct drm_atomic_state *state)
1351 struct drm_device *dev = state->dev;
1352 struct drm_mode_config *config = &dev->mode_config;
1353 struct drm_plane *plane;
1354 struct drm_plane_state *plane_state;
1355 struct drm_crtc *crtc;
1356 struct drm_crtc_state *crtc_state;
1359 DRM_DEBUG_ATOMIC("checking %p\n", state);
1361 for_each_plane_in_state(state, plane, plane_state, i) {
1362 ret = drm_atomic_plane_check(plane, plane_state);
1364 DRM_DEBUG_ATOMIC("[PLANE:%d:%s] atomic core check failed\n",
1365 plane->base.id, plane->name);
1370 for_each_crtc_in_state(state, crtc, crtc_state, i) {
1371 ret = drm_atomic_crtc_check(crtc, crtc_state);
1373 DRM_DEBUG_ATOMIC("[CRTC:%d:%s] atomic core check failed\n",
1374 crtc->base.id, crtc->name);
1379 if (config->funcs->atomic_check)
1380 ret = config->funcs->atomic_check(state->dev, state);
1382 if (!state->allow_modeset) {
1383 for_each_crtc_in_state(state, crtc, crtc_state, i) {
1384 if (drm_atomic_crtc_needs_modeset(crtc_state)) {
1385 DRM_DEBUG_ATOMIC("[CRTC:%d:%s] requires full modeset\n",
1386 crtc->base.id, crtc->name);
1394 EXPORT_SYMBOL(drm_atomic_check_only);
1397 * drm_atomic_commit - commit configuration atomically
1398 * @state: atomic configuration to check
1400 * Note that this function can return -EDEADLK if the driver needed to acquire
1401 * more locks but encountered a deadlock. The caller must then do the usual w/w
1402 * backoff dance and restart. All other errors are fatal.
1404 * Also note that on successful execution ownership of @state is transferred
1405 * from the caller of this function to the function itself. The caller must not
1406 * free or in any other way access @state. If the function fails then the caller
1407 * must clean up @state itself.
1410 * 0 on success, negative error code on failure.
1412 int drm_atomic_commit(struct drm_atomic_state *state)
1414 struct drm_mode_config *config = &state->dev->mode_config;
1417 ret = drm_atomic_check_only(state);
1421 DRM_DEBUG_ATOMIC("commiting %p\n", state);
1423 return config->funcs->atomic_commit(state->dev, state, false);
1425 EXPORT_SYMBOL(drm_atomic_commit);
1428 * drm_atomic_nonblocking_commit - atomic&nonblocking configuration commit
1429 * @state: atomic configuration to check
1431 * Note that this function can return -EDEADLK if the driver needed to acquire
1432 * more locks but encountered a deadlock. The caller must then do the usual w/w
1433 * backoff dance and restart. All other errors are fatal.
1435 * Also note that on successful execution ownership of @state is transferred
1436 * from the caller of this function to the function itself. The caller must not
1437 * free or in any other way access @state. If the function fails then the caller
1438 * must clean up @state itself.
1441 * 0 on success, negative error code on failure.
1443 int drm_atomic_nonblocking_commit(struct drm_atomic_state *state)
1445 struct drm_mode_config *config = &state->dev->mode_config;
1448 ret = drm_atomic_check_only(state);
1452 DRM_DEBUG_ATOMIC("commiting %p nonblocking\n", state);
1454 return config->funcs->atomic_commit(state->dev, state, true);
1456 EXPORT_SYMBOL(drm_atomic_nonblocking_commit);
1459 * The big monstor ioctl
1462 static struct drm_pending_vblank_event *create_vblank_event(
1463 struct drm_device *dev, struct drm_file *file_priv,
1464 struct fence *fence, uint64_t user_data)
1466 struct drm_pending_vblank_event *e = NULL;
1469 e = kzalloc(sizeof *e, GFP_KERNEL);
1473 e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
1474 e->event.base.length = sizeof(e->event);
1475 e->event.user_data = user_data;
1478 ret = drm_event_reserve_init(dev, file_priv, &e->base,
1486 e->base.fence = fence;
1491 static int atomic_set_prop(struct drm_atomic_state *state,
1492 struct drm_mode_object *obj, struct drm_property *prop,
1493 uint64_t prop_value)
1495 struct drm_mode_object *ref;
1498 if (!drm_property_change_valid_get(prop, prop_value, &ref))
1501 switch (obj->type) {
1502 case DRM_MODE_OBJECT_CONNECTOR: {
1503 struct drm_connector *connector = obj_to_connector(obj);
1504 struct drm_connector_state *connector_state;
1506 connector_state = drm_atomic_get_connector_state(state, connector);
1507 if (IS_ERR(connector_state)) {
1508 ret = PTR_ERR(connector_state);
1512 ret = drm_atomic_connector_set_property(connector,
1513 connector_state, prop, prop_value);
1516 case DRM_MODE_OBJECT_CRTC: {
1517 struct drm_crtc *crtc = obj_to_crtc(obj);
1518 struct drm_crtc_state *crtc_state;
1520 crtc_state = drm_atomic_get_crtc_state(state, crtc);
1521 if (IS_ERR(crtc_state)) {
1522 ret = PTR_ERR(crtc_state);
1526 ret = drm_atomic_crtc_set_property(crtc,
1527 crtc_state, prop, prop_value);
1530 case DRM_MODE_OBJECT_PLANE: {
1531 struct drm_plane *plane = obj_to_plane(obj);
1532 struct drm_plane_state *plane_state;
1534 plane_state = drm_atomic_get_plane_state(state, plane);
1535 if (IS_ERR(plane_state)) {
1536 ret = PTR_ERR(plane_state);
1540 ret = drm_atomic_plane_set_property(plane,
1541 plane_state, prop, prop_value);
1549 drm_property_change_valid_put(prop, ref);
1554 * drm_atomic_clean_old_fb -- Unset old_fb pointers and set plane->fb pointers.
1556 * @dev: drm device to check.
1557 * @plane_mask: plane mask for planes that were updated.
1558 * @ret: return value, can be -EDEADLK for a retry.
1560 * Before doing an update plane->old_fb is set to plane->fb,
1561 * but before dropping the locks old_fb needs to be set to NULL
1562 * and plane->fb updated. This is a common operation for each
1563 * atomic update, so this call is split off as a helper.
1565 void drm_atomic_clean_old_fb(struct drm_device *dev,
1566 unsigned plane_mask,
1569 struct drm_plane *plane;
1571 /* if succeeded, fixup legacy plane crtc/fb ptrs before dropping
1572 * locks (ie. while it is still safe to deref plane->state). We
1573 * need to do this here because the driver entry points cannot
1574 * distinguish between legacy and atomic ioctls.
1576 drm_for_each_plane_mask(plane, dev, plane_mask) {
1578 struct drm_framebuffer *new_fb = plane->state->fb;
1580 drm_framebuffer_reference(new_fb);
1582 plane->crtc = plane->state->crtc;
1585 drm_framebuffer_unreference(plane->old_fb);
1587 plane->old_fb = NULL;
1590 EXPORT_SYMBOL(drm_atomic_clean_old_fb);
1592 int drm_mode_atomic_ioctl(struct drm_device *dev,
1593 void *data, struct drm_file *file_priv)
1595 struct drm_mode_atomic *arg = data;
1596 uint32_t __user *objs_ptr = (uint32_t __user *)(unsigned long)(arg->objs_ptr);
1597 uint32_t __user *count_props_ptr = (uint32_t __user *)(unsigned long)(arg->count_props_ptr);
1598 uint32_t __user *props_ptr = (uint32_t __user *)(unsigned long)(arg->props_ptr);
1599 uint64_t __user *prop_values_ptr = (uint64_t __user *)(unsigned long)(arg->prop_values_ptr);
1600 unsigned int copied_objs, copied_props;
1601 struct drm_atomic_state *state;
1602 struct drm_modeset_acquire_ctx ctx;
1603 struct drm_plane *plane;
1604 struct drm_crtc *crtc;
1605 struct drm_crtc_state *crtc_state;
1606 unsigned plane_mask;
1610 /* disallow for drivers not supporting atomic: */
1611 if (!drm_core_check_feature(dev, DRIVER_ATOMIC))
1614 /* disallow for userspace that has not enabled atomic cap (even
1615 * though this may be a bit overkill, since legacy userspace
1616 * wouldn't know how to call this ioctl)
1618 if (!file_priv->atomic)
1621 if (arg->flags & ~DRM_MODE_ATOMIC_FLAGS)
1627 if ((arg->flags & DRM_MODE_PAGE_FLIP_ASYNC) &&
1628 !dev->mode_config.async_page_flip)
1631 /* can't test and expect an event at the same time. */
1632 if ((arg->flags & DRM_MODE_ATOMIC_TEST_ONLY) &&
1633 (arg->flags & DRM_MODE_PAGE_FLIP_EVENT))
1636 drm_modeset_acquire_init(&ctx, 0);
1638 state = drm_atomic_state_alloc(dev);
1642 state->acquire_ctx = &ctx;
1643 state->allow_modeset = !!(arg->flags & DRM_MODE_ATOMIC_ALLOW_MODESET);
1650 for (i = 0; i < arg->count_objs; i++) {
1651 uint32_t obj_id, count_props;
1652 struct drm_mode_object *obj;
1654 if (get_user(obj_id, objs_ptr + copied_objs)) {
1659 obj = drm_mode_object_find(dev, obj_id, DRM_MODE_OBJECT_ANY);
1665 if (!obj->properties) {
1666 drm_mode_object_unreference(obj);
1671 if (get_user(count_props, count_props_ptr + copied_objs)) {
1672 drm_mode_object_unreference(obj);
1679 for (j = 0; j < count_props; j++) {
1681 uint64_t prop_value;
1682 struct drm_property *prop;
1684 if (get_user(prop_id, props_ptr + copied_props)) {
1685 drm_mode_object_unreference(obj);
1690 prop = drm_mode_obj_find_prop_id(obj, prop_id);
1692 drm_mode_object_unreference(obj);
1697 if (copy_from_user(&prop_value,
1698 prop_values_ptr + copied_props,
1699 sizeof(prop_value))) {
1700 drm_mode_object_unreference(obj);
1705 ret = atomic_set_prop(state, obj, prop, prop_value);
1707 drm_mode_object_unreference(obj);
1714 if (obj->type == DRM_MODE_OBJECT_PLANE && count_props &&
1715 !(arg->flags & DRM_MODE_ATOMIC_TEST_ONLY)) {
1716 plane = obj_to_plane(obj);
1717 plane_mask |= (1 << drm_plane_index(plane));
1718 plane->old_fb = plane->fb;
1720 drm_mode_object_unreference(obj);
1723 if (arg->flags & DRM_MODE_PAGE_FLIP_EVENT) {
1724 for_each_crtc_in_state(state, crtc, crtc_state, i) {
1725 struct drm_pending_vblank_event *e;
1727 e = create_vblank_event(dev, file_priv, NULL,
1734 crtc_state->event = e;
1738 if (arg->flags & DRM_MODE_ATOMIC_TEST_ONLY) {
1740 * Unlike commit, check_only does not clean up state.
1741 * Below we call drm_atomic_state_put for it.
1743 ret = drm_atomic_check_only(state);
1744 } else if (arg->flags & DRM_MODE_ATOMIC_NONBLOCK) {
1745 ret = drm_atomic_nonblocking_commit(state);
1747 ret = drm_atomic_commit(state);
1751 drm_atomic_clean_old_fb(dev, plane_mask, ret);
1753 if (ret && arg->flags & DRM_MODE_PAGE_FLIP_EVENT) {
1755 * TEST_ONLY and PAGE_FLIP_EVENT are mutually exclusive,
1756 * if they weren't, this code should be called on success
1757 * for TEST_ONLY too.
1760 for_each_crtc_in_state(state, crtc, crtc_state, i) {
1761 if (!crtc_state->event)
1764 drm_event_cancel_free(dev, &crtc_state->event->base);
1768 if (ret == -EDEADLK) {
1769 drm_atomic_state_clear(state);
1770 drm_modeset_backoff(&ctx);
1774 drm_atomic_state_put(state);
1776 drm_modeset_drop_locks(&ctx);
1777 drm_modeset_acquire_fini(&ctx);