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"
37 * drm_atomic_state_default_release -
38 * release memory initialized by drm_atomic_state_init
39 * @state: atomic state
41 * Free all the memory allocated by drm_atomic_state_init.
42 * This is useful for drivers that subclass the atomic state.
44 void drm_atomic_state_default_release(struct drm_atomic_state *state)
46 kfree(state->connectors);
47 kfree(state->connector_states);
49 kfree(state->crtc_states);
51 kfree(state->plane_states);
53 EXPORT_SYMBOL(drm_atomic_state_default_release);
56 * drm_atomic_state_init - init new atomic state
58 * @state: atomic state
60 * Default implementation for filling in a new atomic state.
61 * This is useful for drivers that subclass the atomic state.
64 drm_atomic_state_init(struct drm_device *dev, struct drm_atomic_state *state)
66 /* TODO legacy paths should maybe do a better job about
67 * setting this appropriately?
69 state->allow_modeset = true;
71 state->crtcs = kcalloc(dev->mode_config.num_crtc,
72 sizeof(*state->crtcs), GFP_KERNEL);
75 state->crtc_states = kcalloc(dev->mode_config.num_crtc,
76 sizeof(*state->crtc_states), GFP_KERNEL);
77 if (!state->crtc_states)
79 state->planes = kcalloc(dev->mode_config.num_total_plane,
80 sizeof(*state->planes), GFP_KERNEL);
83 state->plane_states = kcalloc(dev->mode_config.num_total_plane,
84 sizeof(*state->plane_states), GFP_KERNEL);
85 if (!state->plane_states)
90 DRM_DEBUG_ATOMIC("Allocated atomic state %p\n", state);
94 drm_atomic_state_default_release(state);
97 EXPORT_SYMBOL(drm_atomic_state_init);
100 * drm_atomic_state_alloc - allocate atomic state
103 * This allocates an empty atomic state to track updates.
105 struct drm_atomic_state *
106 drm_atomic_state_alloc(struct drm_device *dev)
108 struct drm_mode_config *config = &dev->mode_config;
109 struct drm_atomic_state *state;
111 if (!config->funcs->atomic_state_alloc) {
112 state = kzalloc(sizeof(*state), GFP_KERNEL);
115 if (drm_atomic_state_init(dev, state) < 0) {
122 return config->funcs->atomic_state_alloc(dev);
124 EXPORT_SYMBOL(drm_atomic_state_alloc);
127 * drm_atomic_state_default_clear - clear base atomic state
128 * @state: atomic state
130 * Default implementation for clearing atomic state.
131 * This is useful for drivers that subclass the atomic state.
133 void drm_atomic_state_default_clear(struct drm_atomic_state *state)
135 struct drm_device *dev = state->dev;
136 struct drm_mode_config *config = &dev->mode_config;
139 DRM_DEBUG_ATOMIC("Clearing atomic state %p\n", state);
141 for (i = 0; i < state->num_connector; i++) {
142 struct drm_connector *connector = state->connectors[i];
148 * FIXME: Nonblocking commits can race with connector unplugging and
149 * there's currently nothing that prevents cleanup up state for
150 * deleted connectors. As long as the callback doesn't look at
151 * the connector we'll be fine though, so make sure that's the
152 * case by setting all connector pointers to NULL.
154 state->connector_states[i]->connector = NULL;
155 connector->funcs->atomic_destroy_state(NULL,
156 state->connector_states[i]);
157 state->connectors[i] = NULL;
158 state->connector_states[i] = NULL;
161 for (i = 0; i < config->num_crtc; i++) {
162 struct drm_crtc *crtc = state->crtcs[i];
167 crtc->funcs->atomic_destroy_state(crtc,
168 state->crtc_states[i]);
169 state->crtcs[i] = NULL;
170 state->crtc_states[i] = NULL;
173 for (i = 0; i < config->num_total_plane; i++) {
174 struct drm_plane *plane = state->planes[i];
179 plane->funcs->atomic_destroy_state(plane,
180 state->plane_states[i]);
181 state->planes[i] = NULL;
182 state->plane_states[i] = NULL;
185 EXPORT_SYMBOL(drm_atomic_state_default_clear);
188 * drm_atomic_state_clear - clear state object
189 * @state: atomic state
191 * When the w/w mutex algorithm detects a deadlock we need to back off and drop
192 * all locks. So someone else could sneak in and change the current modeset
193 * configuration. Which means that all the state assembled in @state is no
194 * longer an atomic update to the current state, but to some arbitrary earlier
195 * state. Which could break assumptions the driver's ->atomic_check likely
198 * Hence we must clear all cached state and completely start over, using this
201 void drm_atomic_state_clear(struct drm_atomic_state *state)
203 struct drm_device *dev = state->dev;
204 struct drm_mode_config *config = &dev->mode_config;
206 if (config->funcs->atomic_state_clear)
207 config->funcs->atomic_state_clear(state);
209 drm_atomic_state_default_clear(state);
211 EXPORT_SYMBOL(drm_atomic_state_clear);
214 * drm_atomic_state_free - free all memory for an atomic state
215 * @state: atomic state to deallocate
217 * This frees all memory associated with an atomic state, including all the
218 * per-object state for planes, crtcs and connectors.
220 void drm_atomic_state_free(struct drm_atomic_state *state)
222 struct drm_device *dev;
223 struct drm_mode_config *config;
229 config = &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->crtc_states[index] = crtc_state;
281 state->crtcs[index] = 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;
362 if (blob->length != sizeof(struct drm_mode_modeinfo) ||
363 drm_mode_convert_umode(&state->mode,
364 (const struct drm_mode_modeinfo *)
368 state->mode_blob = drm_property_reference_blob(blob);
369 state->enable = true;
370 DRM_DEBUG_ATOMIC("Set [MODE:%s] for CRTC state %p\n",
371 state->mode.name, state);
373 memset(&state->mode, 0, sizeof(state->mode));
374 state->enable = false;
375 DRM_DEBUG_ATOMIC("Set [NOMODE] for CRTC state %p\n",
381 EXPORT_SYMBOL(drm_atomic_set_mode_prop_for_crtc);
384 * drm_atomic_replace_property_blob - replace a blob property
385 * @blob: a pointer to the member blob to be replaced
386 * @new_blob: the new blob to replace with
387 * @replaced: whether the blob has been replaced
390 * Zero on success, error code on failure
393 drm_atomic_replace_property_blob(struct drm_property_blob **blob,
394 struct drm_property_blob *new_blob,
397 struct drm_property_blob *old_blob = *blob;
399 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->plane_states[index] = plane_state;
642 state->planes[index] = 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 (plane->funcs->atomic_set_property) {
711 return plane->funcs->atomic_set_property(plane, state,
719 EXPORT_SYMBOL(drm_atomic_plane_set_property);
722 * drm_atomic_plane_get_property - get property value from plane state
723 * @plane: the drm plane to set a property on
724 * @state: the state object to get the property value from
725 * @property: the property to set
726 * @val: return location for the property value
728 * This function handles generic/core properties and calls out to
729 * driver's ->atomic_get_property() for driver properties. To ensure
730 * consistent behavior you must call this function rather than the
731 * driver hook directly.
734 * Zero on success, error code on failure
737 drm_atomic_plane_get_property(struct drm_plane *plane,
738 const struct drm_plane_state *state,
739 struct drm_property *property, uint64_t *val)
741 struct drm_device *dev = plane->dev;
742 struct drm_mode_config *config = &dev->mode_config;
744 if (property == config->prop_fb_id) {
745 *val = (state->fb) ? state->fb->base.id : 0;
746 } else if (property == config->prop_crtc_id) {
747 *val = (state->crtc) ? state->crtc->base.id : 0;
748 } else if (property == config->prop_crtc_x) {
749 *val = I642U64(state->crtc_x);
750 } else if (property == config->prop_crtc_y) {
751 *val = I642U64(state->crtc_y);
752 } else if (property == config->prop_crtc_w) {
753 *val = state->crtc_w;
754 } else if (property == config->prop_crtc_h) {
755 *val = state->crtc_h;
756 } else if (property == config->prop_src_x) {
758 } else if (property == config->prop_src_y) {
760 } else if (property == config->prop_src_w) {
762 } else if (property == config->prop_src_h) {
764 } else if (property == config->rotation_property) {
765 *val = state->rotation;
766 } else if (plane->funcs->atomic_get_property) {
767 return plane->funcs->atomic_get_property(plane, state, property, val);
776 plane_switching_crtc(struct drm_atomic_state *state,
777 struct drm_plane *plane,
778 struct drm_plane_state *plane_state)
780 if (!plane->state->crtc || !plane_state->crtc)
783 if (plane->state->crtc == plane_state->crtc)
786 /* This could be refined, but currently there's no helper or driver code
787 * to implement direct switching of active planes nor userspace to take
788 * advantage of more direct plane switching without the intermediate
795 * drm_atomic_plane_check - check plane state
796 * @plane: plane to check
797 * @state: plane state to check
799 * Provides core sanity checks for plane state.
802 * Zero on success, error code on failure
804 static int drm_atomic_plane_check(struct drm_plane *plane,
805 struct drm_plane_state *state)
807 unsigned int fb_width, fb_height;
810 /* either *both* CRTC and FB must be set, or neither */
811 if (WARN_ON(state->crtc && !state->fb)) {
812 DRM_DEBUG_ATOMIC("CRTC set but no FB\n");
814 } else if (WARN_ON(state->fb && !state->crtc)) {
815 DRM_DEBUG_ATOMIC("FB set but no CRTC\n");
819 /* if disabled, we don't care about the rest of the state: */
823 /* Check whether this plane is usable on this CRTC */
824 if (!(plane->possible_crtcs & drm_crtc_mask(state->crtc))) {
825 DRM_DEBUG_ATOMIC("Invalid crtc for plane\n");
829 /* Check whether this plane supports the fb pixel format. */
830 ret = drm_plane_check_pixel_format(plane, state->fb->pixel_format);
832 DRM_DEBUG_ATOMIC("Invalid pixel format %s\n",
833 drm_get_format_name(state->fb->pixel_format));
837 /* Give drivers some help against integer overflows */
838 if (state->crtc_w > INT_MAX ||
839 state->crtc_x > INT_MAX - (int32_t) state->crtc_w ||
840 state->crtc_h > INT_MAX ||
841 state->crtc_y > INT_MAX - (int32_t) state->crtc_h) {
842 DRM_DEBUG_ATOMIC("Invalid CRTC coordinates %ux%u+%d+%d\n",
843 state->crtc_w, state->crtc_h,
844 state->crtc_x, state->crtc_y);
848 fb_width = state->fb->width << 16;
849 fb_height = state->fb->height << 16;
851 /* Make sure source coordinates are inside the fb. */
852 if (state->src_w > fb_width ||
853 state->src_x > fb_width - state->src_w ||
854 state->src_h > fb_height ||
855 state->src_y > fb_height - state->src_h) {
856 DRM_DEBUG_ATOMIC("Invalid source coordinates "
857 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
858 state->src_w >> 16, ((state->src_w & 0xffff) * 15625) >> 10,
859 state->src_h >> 16, ((state->src_h & 0xffff) * 15625) >> 10,
860 state->src_x >> 16, ((state->src_x & 0xffff) * 15625) >> 10,
861 state->src_y >> 16, ((state->src_y & 0xffff) * 15625) >> 10);
865 if (plane_switching_crtc(state->state, plane, state)) {
866 DRM_DEBUG_ATOMIC("[PLANE:%d:%s] switching CRTC directly\n",
867 plane->base.id, plane->name);
875 * drm_atomic_get_connector_state - get connector state
876 * @state: global atomic state object
877 * @connector: connector to get state object for
879 * This function returns the connector state for the given connector,
880 * allocating it if needed. It will also grab the relevant connector lock to
881 * make sure that the state is consistent.
885 * Either the allocated state or the error code encoded into the pointer. When
886 * the error is EDEADLK then the w/w mutex code has detected a deadlock and the
887 * entire atomic sequence must be restarted. All other errors are fatal.
889 struct drm_connector_state *
890 drm_atomic_get_connector_state(struct drm_atomic_state *state,
891 struct drm_connector *connector)
894 struct drm_mode_config *config = &connector->dev->mode_config;
895 struct drm_connector_state *connector_state;
897 WARN_ON(!state->acquire_ctx);
899 ret = drm_modeset_lock(&config->connection_mutex, state->acquire_ctx);
903 index = drm_connector_index(connector);
905 if (index >= state->num_connector) {
906 struct drm_connector **c;
907 struct drm_connector_state **cs;
908 int alloc = max(index + 1, config->num_connector);
910 c = krealloc(state->connectors, alloc * sizeof(*state->connectors), GFP_KERNEL);
912 return ERR_PTR(-ENOMEM);
914 state->connectors = c;
915 memset(&state->connectors[state->num_connector], 0,
916 sizeof(*state->connectors) * (alloc - state->num_connector));
918 cs = krealloc(state->connector_states, alloc * sizeof(*state->connector_states), GFP_KERNEL);
920 return ERR_PTR(-ENOMEM);
922 state->connector_states = cs;
923 memset(&state->connector_states[state->num_connector], 0,
924 sizeof(*state->connector_states) * (alloc - state->num_connector));
925 state->num_connector = alloc;
928 if (state->connector_states[index])
929 return state->connector_states[index];
931 connector_state = connector->funcs->atomic_duplicate_state(connector);
932 if (!connector_state)
933 return ERR_PTR(-ENOMEM);
935 state->connector_states[index] = connector_state;
936 state->connectors[index] = connector;
937 connector_state->state = state;
939 DRM_DEBUG_ATOMIC("Added [CONNECTOR:%d] %p state to %p\n",
940 connector->base.id, connector_state, state);
942 if (connector_state->crtc) {
943 struct drm_crtc_state *crtc_state;
945 crtc_state = drm_atomic_get_crtc_state(state,
946 connector_state->crtc);
947 if (IS_ERR(crtc_state))
948 return ERR_CAST(crtc_state);
951 return connector_state;
953 EXPORT_SYMBOL(drm_atomic_get_connector_state);
956 * drm_atomic_connector_set_property - set property on connector.
957 * @connector: the drm connector to set a property on
958 * @state: the state object to update with the new property value
959 * @property: the property to set
960 * @val: the new property value
962 * Use this instead of calling connector->atomic_set_property directly.
963 * This function handles generic/core properties and calls out to
964 * driver's ->atomic_set_property() for driver properties. To ensure
965 * consistent behavior you must call this function rather than the
966 * driver hook directly.
969 * Zero on success, error code on failure
971 int drm_atomic_connector_set_property(struct drm_connector *connector,
972 struct drm_connector_state *state, struct drm_property *property,
975 struct drm_device *dev = connector->dev;
976 struct drm_mode_config *config = &dev->mode_config;
978 if (property == config->prop_crtc_id) {
979 struct drm_crtc *crtc = drm_crtc_find(dev, val);
980 return drm_atomic_set_crtc_for_connector(state, crtc);
981 } else if (property == config->dpms_property) {
982 /* setting DPMS property requires special handling, which
983 * is done in legacy setprop path for us. Disallow (for
984 * now?) atomic writes to DPMS property:
987 } else if (connector->funcs->atomic_set_property) {
988 return connector->funcs->atomic_set_property(connector,
989 state, property, val);
994 EXPORT_SYMBOL(drm_atomic_connector_set_property);
997 * drm_atomic_connector_get_property - get property value from connector state
998 * @connector: the drm connector to set a property on
999 * @state: the state object to get the property value from
1000 * @property: the property to set
1001 * @val: return location for the property value
1003 * This function handles generic/core properties and calls out to
1004 * driver's ->atomic_get_property() for driver properties. To ensure
1005 * consistent behavior you must call this function rather than the
1006 * driver hook directly.
1009 * Zero on success, error code on failure
1012 drm_atomic_connector_get_property(struct drm_connector *connector,
1013 const struct drm_connector_state *state,
1014 struct drm_property *property, uint64_t *val)
1016 struct drm_device *dev = connector->dev;
1017 struct drm_mode_config *config = &dev->mode_config;
1019 if (property == config->prop_crtc_id) {
1020 *val = (state->crtc) ? state->crtc->base.id : 0;
1021 } else if (property == config->dpms_property) {
1022 *val = connector->dpms;
1023 } else if (connector->funcs->atomic_get_property) {
1024 return connector->funcs->atomic_get_property(connector,
1025 state, property, val);
1033 int drm_atomic_get_property(struct drm_mode_object *obj,
1034 struct drm_property *property, uint64_t *val)
1036 struct drm_device *dev = property->dev;
1039 switch (obj->type) {
1040 case DRM_MODE_OBJECT_CONNECTOR: {
1041 struct drm_connector *connector = obj_to_connector(obj);
1042 WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex));
1043 ret = drm_atomic_connector_get_property(connector,
1044 connector->state, property, val);
1047 case DRM_MODE_OBJECT_CRTC: {
1048 struct drm_crtc *crtc = obj_to_crtc(obj);
1049 WARN_ON(!drm_modeset_is_locked(&crtc->mutex));
1050 ret = drm_atomic_crtc_get_property(crtc,
1051 crtc->state, property, val);
1054 case DRM_MODE_OBJECT_PLANE: {
1055 struct drm_plane *plane = obj_to_plane(obj);
1056 WARN_ON(!drm_modeset_is_locked(&plane->mutex));
1057 ret = drm_atomic_plane_get_property(plane,
1058 plane->state, property, val);
1070 * drm_atomic_set_crtc_for_plane - set crtc for plane
1071 * @plane_state: the plane whose incoming state to update
1072 * @crtc: crtc to use for the plane
1074 * Changing the assigned crtc for a plane requires us to grab the lock and state
1075 * for the new crtc, as needed. This function takes care of all these details
1076 * besides updating the pointer in the state object itself.
1079 * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK
1080 * then the w/w mutex code has detected a deadlock and the entire atomic
1081 * sequence must be restarted. All other errors are fatal.
1084 drm_atomic_set_crtc_for_plane(struct drm_plane_state *plane_state,
1085 struct drm_crtc *crtc)
1087 struct drm_plane *plane = plane_state->plane;
1088 struct drm_crtc_state *crtc_state;
1090 if (plane_state->crtc) {
1091 crtc_state = drm_atomic_get_crtc_state(plane_state->state,
1093 if (WARN_ON(IS_ERR(crtc_state)))
1094 return PTR_ERR(crtc_state);
1096 crtc_state->plane_mask &= ~(1 << drm_plane_index(plane));
1099 plane_state->crtc = crtc;
1102 crtc_state = drm_atomic_get_crtc_state(plane_state->state,
1104 if (IS_ERR(crtc_state))
1105 return PTR_ERR(crtc_state);
1106 crtc_state->plane_mask |= (1 << drm_plane_index(plane));
1110 DRM_DEBUG_ATOMIC("Link plane state %p to [CRTC:%d:%s]\n",
1111 plane_state, crtc->base.id, crtc->name);
1113 DRM_DEBUG_ATOMIC("Link plane state %p to [NOCRTC]\n",
1118 EXPORT_SYMBOL(drm_atomic_set_crtc_for_plane);
1121 * drm_atomic_set_fb_for_plane - set framebuffer for plane
1122 * @plane_state: atomic state object for the plane
1123 * @fb: fb to use for the plane
1125 * Changing the assigned framebuffer for a plane requires us to grab a reference
1126 * to the new fb and drop the reference to the old fb, if there is one. This
1127 * function takes care of all these details besides updating the pointer in the
1128 * state object itself.
1131 drm_atomic_set_fb_for_plane(struct drm_plane_state *plane_state,
1132 struct drm_framebuffer *fb)
1134 if (plane_state->fb)
1135 drm_framebuffer_unreference(plane_state->fb);
1137 drm_framebuffer_reference(fb);
1138 plane_state->fb = fb;
1141 DRM_DEBUG_ATOMIC("Set [FB:%d] for plane state %p\n",
1142 fb->base.id, plane_state);
1144 DRM_DEBUG_ATOMIC("Set [NOFB] for plane state %p\n",
1147 EXPORT_SYMBOL(drm_atomic_set_fb_for_plane);
1150 * drm_atomic_set_crtc_for_connector - set crtc for connector
1151 * @conn_state: atomic state object for the connector
1152 * @crtc: crtc to use for the connector
1154 * Changing the assigned crtc for a connector requires us to grab the lock and
1155 * state for the new crtc, as needed. This function takes care of all these
1156 * details besides updating the pointer in the state object itself.
1159 * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK
1160 * then the w/w mutex code has detected a deadlock and the entire atomic
1161 * sequence must be restarted. All other errors are fatal.
1164 drm_atomic_set_crtc_for_connector(struct drm_connector_state *conn_state,
1165 struct drm_crtc *crtc)
1167 struct drm_crtc_state *crtc_state;
1169 if (conn_state->crtc && conn_state->crtc != crtc) {
1170 crtc_state = drm_atomic_get_existing_crtc_state(conn_state->state,
1173 crtc_state->connector_mask &=
1174 ~(1 << drm_connector_index(conn_state->connector));
1178 crtc_state = drm_atomic_get_crtc_state(conn_state->state, crtc);
1179 if (IS_ERR(crtc_state))
1180 return PTR_ERR(crtc_state);
1182 crtc_state->connector_mask |=
1183 1 << drm_connector_index(conn_state->connector);
1186 conn_state->crtc = crtc;
1189 DRM_DEBUG_ATOMIC("Link connector state %p to [CRTC:%d:%s]\n",
1190 conn_state, crtc->base.id, crtc->name);
1192 DRM_DEBUG_ATOMIC("Link connector state %p to [NOCRTC]\n",
1197 EXPORT_SYMBOL(drm_atomic_set_crtc_for_connector);
1200 * drm_atomic_add_affected_connectors - add connectors for crtc
1201 * @state: atomic state
1204 * This function walks the current configuration and adds all connectors
1205 * currently using @crtc to the atomic configuration @state. Note that this
1206 * function must acquire the connection mutex. This can potentially cause
1207 * unneeded seralization if the update is just for the planes on one crtc. Hence
1208 * drivers and helpers should only call this when really needed (e.g. when a
1209 * full modeset needs to happen due to some change).
1212 * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK
1213 * then the w/w mutex code has detected a deadlock and the entire atomic
1214 * sequence must be restarted. All other errors are fatal.
1217 drm_atomic_add_affected_connectors(struct drm_atomic_state *state,
1218 struct drm_crtc *crtc)
1220 struct drm_mode_config *config = &state->dev->mode_config;
1221 struct drm_connector *connector;
1222 struct drm_connector_state *conn_state;
1225 ret = drm_modeset_lock(&config->connection_mutex, state->acquire_ctx);
1229 DRM_DEBUG_ATOMIC("Adding all current connectors for [CRTC:%d:%s] to %p\n",
1230 crtc->base.id, crtc->name, state);
1233 * Changed connectors are already in @state, so only need to look at the
1234 * current configuration.
1236 drm_for_each_connector(connector, state->dev) {
1237 if (connector->state->crtc != crtc)
1240 conn_state = drm_atomic_get_connector_state(state, connector);
1241 if (IS_ERR(conn_state))
1242 return PTR_ERR(conn_state);
1247 EXPORT_SYMBOL(drm_atomic_add_affected_connectors);
1250 * drm_atomic_add_affected_planes - add planes for crtc
1251 * @state: atomic state
1254 * This function walks the current configuration and adds all planes
1255 * currently used by @crtc to the atomic configuration @state. This is useful
1256 * when an atomic commit also needs to check all currently enabled plane on
1257 * @crtc, e.g. when changing the mode. It's also useful when re-enabling a CRTC
1258 * to avoid special code to force-enable all planes.
1260 * Since acquiring a plane state will always also acquire the w/w mutex of the
1261 * current CRTC for that plane (if there is any) adding all the plane states for
1262 * a CRTC will not reduce parallism of atomic updates.
1265 * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK
1266 * then the w/w mutex code has detected a deadlock and the entire atomic
1267 * sequence must be restarted. All other errors are fatal.
1270 drm_atomic_add_affected_planes(struct drm_atomic_state *state,
1271 struct drm_crtc *crtc)
1273 struct drm_plane *plane;
1275 WARN_ON(!drm_atomic_get_existing_crtc_state(state, crtc));
1277 drm_for_each_plane_mask(plane, state->dev, crtc->state->plane_mask) {
1278 struct drm_plane_state *plane_state =
1279 drm_atomic_get_plane_state(state, plane);
1281 if (IS_ERR(plane_state))
1282 return PTR_ERR(plane_state);
1286 EXPORT_SYMBOL(drm_atomic_add_affected_planes);
1289 * drm_atomic_legacy_backoff - locking backoff for legacy ioctls
1290 * @state: atomic state
1292 * This function should be used by legacy entry points which don't understand
1293 * -EDEADLK semantics. For simplicity this one will grab all modeset locks after
1294 * the slowpath completed.
1296 void drm_atomic_legacy_backoff(struct drm_atomic_state *state)
1301 drm_modeset_backoff(state->acquire_ctx);
1303 ret = drm_modeset_lock_all_ctx(state->dev, state->acquire_ctx);
1307 EXPORT_SYMBOL(drm_atomic_legacy_backoff);
1310 * drm_atomic_check_only - check whether a given config would work
1311 * @state: atomic configuration to check
1313 * Note that this function can return -EDEADLK if the driver needed to acquire
1314 * more locks but encountered a deadlock. The caller must then do the usual w/w
1315 * backoff dance and restart. All other errors are fatal.
1318 * 0 on success, negative error code on failure.
1320 int drm_atomic_check_only(struct drm_atomic_state *state)
1322 struct drm_device *dev = state->dev;
1323 struct drm_mode_config *config = &dev->mode_config;
1324 struct drm_plane *plane;
1325 struct drm_plane_state *plane_state;
1326 struct drm_crtc *crtc;
1327 struct drm_crtc_state *crtc_state;
1330 DRM_DEBUG_ATOMIC("checking %p\n", state);
1332 for_each_plane_in_state(state, plane, plane_state, i) {
1333 ret = drm_atomic_plane_check(plane, plane_state);
1335 DRM_DEBUG_ATOMIC("[PLANE:%d:%s] atomic core check failed\n",
1336 plane->base.id, plane->name);
1341 for_each_crtc_in_state(state, crtc, crtc_state, i) {
1342 ret = drm_atomic_crtc_check(crtc, crtc_state);
1344 DRM_DEBUG_ATOMIC("[CRTC:%d:%s] atomic core check failed\n",
1345 crtc->base.id, crtc->name);
1350 if (config->funcs->atomic_check)
1351 ret = config->funcs->atomic_check(state->dev, state);
1353 if (!state->allow_modeset) {
1354 for_each_crtc_in_state(state, crtc, crtc_state, i) {
1355 if (drm_atomic_crtc_needs_modeset(crtc_state)) {
1356 DRM_DEBUG_ATOMIC("[CRTC:%d:%s] requires full modeset\n",
1357 crtc->base.id, crtc->name);
1365 EXPORT_SYMBOL(drm_atomic_check_only);
1368 * drm_atomic_commit - commit configuration atomically
1369 * @state: atomic configuration to check
1371 * Note that this function can return -EDEADLK if the driver needed to acquire
1372 * more locks but encountered a deadlock. The caller must then do the usual w/w
1373 * backoff dance and restart. All other errors are fatal.
1375 * Also note that on successful execution ownership of @state is transferred
1376 * from the caller of this function to the function itself. The caller must not
1377 * free or in any other way access @state. If the function fails then the caller
1378 * must clean up @state itself.
1381 * 0 on success, negative error code on failure.
1383 int drm_atomic_commit(struct drm_atomic_state *state)
1385 struct drm_mode_config *config = &state->dev->mode_config;
1388 ret = drm_atomic_check_only(state);
1392 DRM_DEBUG_ATOMIC("commiting %p\n", state);
1394 return config->funcs->atomic_commit(state->dev, state, false);
1396 EXPORT_SYMBOL(drm_atomic_commit);
1399 * drm_atomic_nonblocking_commit - atomic&nonblocking configuration commit
1400 * @state: atomic configuration to check
1402 * Note that this function can return -EDEADLK if the driver needed to acquire
1403 * more locks but encountered a deadlock. The caller must then do the usual w/w
1404 * backoff dance and restart. All other errors are fatal.
1406 * Also note that on successful execution ownership of @state is transferred
1407 * from the caller of this function to the function itself. The caller must not
1408 * free or in any other way access @state. If the function fails then the caller
1409 * must clean up @state itself.
1412 * 0 on success, negative error code on failure.
1414 int drm_atomic_nonblocking_commit(struct drm_atomic_state *state)
1416 struct drm_mode_config *config = &state->dev->mode_config;
1419 ret = drm_atomic_check_only(state);
1423 DRM_DEBUG_ATOMIC("commiting %p nonblocking\n", state);
1425 return config->funcs->atomic_commit(state->dev, state, true);
1427 EXPORT_SYMBOL(drm_atomic_nonblocking_commit);
1430 * The big monstor ioctl
1433 static struct drm_pending_vblank_event *create_vblank_event(
1434 struct drm_device *dev, struct drm_file *file_priv, uint64_t user_data)
1436 struct drm_pending_vblank_event *e = NULL;
1439 e = kzalloc(sizeof *e, GFP_KERNEL);
1443 e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
1444 e->event.base.length = sizeof(e->event);
1445 e->event.user_data = user_data;
1447 ret = drm_event_reserve_init(dev, file_priv, &e->base, &e->event.base);
1456 static int atomic_set_prop(struct drm_atomic_state *state,
1457 struct drm_mode_object *obj, struct drm_property *prop,
1458 uint64_t prop_value)
1460 struct drm_mode_object *ref;
1463 if (!drm_property_change_valid_get(prop, prop_value, &ref))
1466 switch (obj->type) {
1467 case DRM_MODE_OBJECT_CONNECTOR: {
1468 struct drm_connector *connector = obj_to_connector(obj);
1469 struct drm_connector_state *connector_state;
1471 connector_state = drm_atomic_get_connector_state(state, connector);
1472 if (IS_ERR(connector_state)) {
1473 ret = PTR_ERR(connector_state);
1477 ret = drm_atomic_connector_set_property(connector,
1478 connector_state, prop, prop_value);
1481 case DRM_MODE_OBJECT_CRTC: {
1482 struct drm_crtc *crtc = obj_to_crtc(obj);
1483 struct drm_crtc_state *crtc_state;
1485 crtc_state = drm_atomic_get_crtc_state(state, crtc);
1486 if (IS_ERR(crtc_state)) {
1487 ret = PTR_ERR(crtc_state);
1491 ret = drm_atomic_crtc_set_property(crtc,
1492 crtc_state, prop, prop_value);
1495 case DRM_MODE_OBJECT_PLANE: {
1496 struct drm_plane *plane = obj_to_plane(obj);
1497 struct drm_plane_state *plane_state;
1499 plane_state = drm_atomic_get_plane_state(state, plane);
1500 if (IS_ERR(plane_state)) {
1501 ret = PTR_ERR(plane_state);
1505 ret = drm_atomic_plane_set_property(plane,
1506 plane_state, prop, prop_value);
1514 drm_property_change_valid_put(prop, ref);
1519 * drm_atomic_clean_old_fb -- Unset old_fb pointers and set plane->fb pointers.
1521 * @dev: drm device to check.
1522 * @plane_mask: plane mask for planes that were updated.
1523 * @ret: return value, can be -EDEADLK for a retry.
1525 * Before doing an update plane->old_fb is set to plane->fb,
1526 * but before dropping the locks old_fb needs to be set to NULL
1527 * and plane->fb updated. This is a common operation for each
1528 * atomic update, so this call is split off as a helper.
1530 void drm_atomic_clean_old_fb(struct drm_device *dev,
1531 unsigned plane_mask,
1534 struct drm_plane *plane;
1536 /* if succeeded, fixup legacy plane crtc/fb ptrs before dropping
1537 * locks (ie. while it is still safe to deref plane->state). We
1538 * need to do this here because the driver entry points cannot
1539 * distinguish between legacy and atomic ioctls.
1541 drm_for_each_plane_mask(plane, dev, plane_mask) {
1543 struct drm_framebuffer *new_fb = plane->state->fb;
1545 drm_framebuffer_reference(new_fb);
1547 plane->crtc = plane->state->crtc;
1550 drm_framebuffer_unreference(plane->old_fb);
1552 plane->old_fb = NULL;
1555 EXPORT_SYMBOL(drm_atomic_clean_old_fb);
1557 int drm_mode_atomic_ioctl(struct drm_device *dev,
1558 void *data, struct drm_file *file_priv)
1560 struct drm_mode_atomic *arg = data;
1561 uint32_t __user *objs_ptr = (uint32_t __user *)(unsigned long)(arg->objs_ptr);
1562 uint32_t __user *count_props_ptr = (uint32_t __user *)(unsigned long)(arg->count_props_ptr);
1563 uint32_t __user *props_ptr = (uint32_t __user *)(unsigned long)(arg->props_ptr);
1564 uint64_t __user *prop_values_ptr = (uint64_t __user *)(unsigned long)(arg->prop_values_ptr);
1565 unsigned int copied_objs, copied_props;
1566 struct drm_atomic_state *state;
1567 struct drm_modeset_acquire_ctx ctx;
1568 struct drm_plane *plane;
1569 struct drm_crtc *crtc;
1570 struct drm_crtc_state *crtc_state;
1571 unsigned plane_mask;
1575 /* disallow for drivers not supporting atomic: */
1576 if (!drm_core_check_feature(dev, DRIVER_ATOMIC))
1579 /* disallow for userspace that has not enabled atomic cap (even
1580 * though this may be a bit overkill, since legacy userspace
1581 * wouldn't know how to call this ioctl)
1583 if (!file_priv->atomic)
1586 if (arg->flags & ~DRM_MODE_ATOMIC_FLAGS)
1592 if ((arg->flags & DRM_MODE_PAGE_FLIP_ASYNC) &&
1593 !dev->mode_config.async_page_flip)
1596 /* can't test and expect an event at the same time. */
1597 if ((arg->flags & DRM_MODE_ATOMIC_TEST_ONLY) &&
1598 (arg->flags & DRM_MODE_PAGE_FLIP_EVENT))
1601 drm_modeset_acquire_init(&ctx, 0);
1603 state = drm_atomic_state_alloc(dev);
1607 state->acquire_ctx = &ctx;
1608 state->allow_modeset = !!(arg->flags & DRM_MODE_ATOMIC_ALLOW_MODESET);
1615 for (i = 0; i < arg->count_objs; i++) {
1616 uint32_t obj_id, count_props;
1617 struct drm_mode_object *obj;
1619 if (get_user(obj_id, objs_ptr + copied_objs)) {
1624 obj = drm_mode_object_find(dev, obj_id, DRM_MODE_OBJECT_ANY);
1625 if (!obj || !obj->properties) {
1630 if (get_user(count_props, count_props_ptr + copied_objs)) {
1637 for (j = 0; j < count_props; j++) {
1639 uint64_t prop_value;
1640 struct drm_property *prop;
1642 if (get_user(prop_id, props_ptr + copied_props)) {
1647 prop = drm_property_find(dev, prop_id);
1653 if (copy_from_user(&prop_value,
1654 prop_values_ptr + copied_props,
1655 sizeof(prop_value))) {
1660 ret = atomic_set_prop(state, obj, prop, prop_value);
1667 if (obj->type == DRM_MODE_OBJECT_PLANE && count_props &&
1668 !(arg->flags & DRM_MODE_ATOMIC_TEST_ONLY)) {
1669 plane = obj_to_plane(obj);
1670 plane_mask |= (1 << drm_plane_index(plane));
1671 plane->old_fb = plane->fb;
1675 if (arg->flags & DRM_MODE_PAGE_FLIP_EVENT) {
1676 for_each_crtc_in_state(state, crtc, crtc_state, i) {
1677 struct drm_pending_vblank_event *e;
1679 e = create_vblank_event(dev, file_priv, arg->user_data);
1685 crtc_state->event = e;
1689 if (arg->flags & DRM_MODE_ATOMIC_TEST_ONLY) {
1691 * Unlike commit, check_only does not clean up state.
1692 * Below we call drm_atomic_state_free for it.
1694 ret = drm_atomic_check_only(state);
1695 } else if (arg->flags & DRM_MODE_ATOMIC_NONBLOCK) {
1696 ret = drm_atomic_nonblocking_commit(state);
1698 ret = drm_atomic_commit(state);
1702 drm_atomic_clean_old_fb(dev, plane_mask, ret);
1704 if (ret && arg->flags & DRM_MODE_PAGE_FLIP_EVENT) {
1706 * TEST_ONLY and PAGE_FLIP_EVENT are mutually exclusive,
1707 * if they weren't, this code should be called on success
1708 * for TEST_ONLY too.
1711 for_each_crtc_in_state(state, crtc, crtc_state, i) {
1712 if (!crtc_state->event)
1715 drm_event_cancel_free(dev, &crtc_state->event->base);
1719 if (ret == -EDEADLK) {
1720 drm_atomic_state_clear(state);
1721 drm_modeset_backoff(&ctx);
1725 if (ret || arg->flags & DRM_MODE_ATOMIC_TEST_ONLY)
1726 drm_atomic_state_free(state);
1728 drm_modeset_drop_locks(&ctx);
1729 drm_modeset_acquire_fini(&ctx);