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 /* TODO legacy paths should maybe do a better job about
78 * setting this appropriately?
80 state
->allow_modeset
= true;
82 state
->crtcs
= kcalloc(dev
->mode_config
.num_crtc
,
83 sizeof(*state
->crtcs
), GFP_KERNEL
);
86 state
->planes
= kcalloc(dev
->mode_config
.num_total_plane
,
87 sizeof(*state
->planes
), GFP_KERNEL
);
93 DRM_DEBUG_ATOMIC("Allocated atomic state %p\n", state
);
97 drm_atomic_state_default_release(state
);
100 EXPORT_SYMBOL(drm_atomic_state_init
);
103 * drm_atomic_state_alloc - allocate atomic state
106 * This allocates an empty atomic state to track updates.
108 struct drm_atomic_state
*
109 drm_atomic_state_alloc(struct drm_device
*dev
)
111 struct drm_mode_config
*config
= &dev
->mode_config
;
112 struct drm_atomic_state
*state
;
114 if (!config
->funcs
->atomic_state_alloc
) {
115 state
= kzalloc(sizeof(*state
), GFP_KERNEL
);
118 if (drm_atomic_state_init(dev
, state
) < 0) {
125 return config
->funcs
->atomic_state_alloc(dev
);
127 EXPORT_SYMBOL(drm_atomic_state_alloc
);
130 * drm_atomic_state_default_clear - clear base atomic state
131 * @state: atomic state
133 * Default implementation for clearing atomic state.
134 * This is useful for drivers that subclass the atomic state.
136 void drm_atomic_state_default_clear(struct drm_atomic_state
*state
)
138 struct drm_device
*dev
= state
->dev
;
139 struct drm_mode_config
*config
= &dev
->mode_config
;
142 DRM_DEBUG_ATOMIC("Clearing atomic state %p\n", state
);
144 for (i
= 0; i
< state
->num_connector
; i
++) {
145 struct drm_connector
*connector
= state
->connectors
[i
].ptr
;
150 connector
->funcs
->atomic_destroy_state(connector
,
151 state
->connectors
[i
].state
);
152 state
->connectors
[i
].ptr
= NULL
;
153 state
->connectors
[i
].state
= NULL
;
154 drm_connector_unreference(connector
);
157 for (i
= 0; i
< config
->num_crtc
; i
++) {
158 struct drm_crtc
*crtc
= state
->crtcs
[i
].ptr
;
163 crtc
->funcs
->atomic_destroy_state(crtc
,
164 state
->crtcs
[i
].state
);
166 if (state
->crtcs
[i
].commit
) {
167 kfree(state
->crtcs
[i
].commit
->event
);
168 state
->crtcs
[i
].commit
->event
= NULL
;
169 drm_crtc_commit_put(state
->crtcs
[i
].commit
);
172 state
->crtcs
[i
].commit
= NULL
;
173 state
->crtcs
[i
].ptr
= NULL
;
174 state
->crtcs
[i
].state
= NULL
;
177 for (i
= 0; i
< config
->num_total_plane
; i
++) {
178 struct drm_plane
*plane
= state
->planes
[i
].ptr
;
183 plane
->funcs
->atomic_destroy_state(plane
,
184 state
->planes
[i
].state
);
185 state
->planes
[i
].ptr
= NULL
;
186 state
->planes
[i
].state
= NULL
;
189 EXPORT_SYMBOL(drm_atomic_state_default_clear
);
192 * drm_atomic_state_clear - clear state object
193 * @state: atomic state
195 * When the w/w mutex algorithm detects a deadlock we need to back off and drop
196 * all locks. So someone else could sneak in and change the current modeset
197 * configuration. Which means that all the state assembled in @state is no
198 * longer an atomic update to the current state, but to some arbitrary earlier
199 * state. Which could break assumptions the driver's ->atomic_check likely
202 * Hence we must clear all cached state and completely start over, using this
205 void drm_atomic_state_clear(struct drm_atomic_state
*state
)
207 struct drm_device
*dev
= state
->dev
;
208 struct drm_mode_config
*config
= &dev
->mode_config
;
210 if (config
->funcs
->atomic_state_clear
)
211 config
->funcs
->atomic_state_clear(state
);
213 drm_atomic_state_default_clear(state
);
215 EXPORT_SYMBOL(drm_atomic_state_clear
);
218 * drm_atomic_state_free - free all memory for an atomic state
219 * @state: atomic state to deallocate
221 * This frees all memory associated with an atomic state, including all the
222 * per-object state for planes, crtcs and connectors.
224 void drm_atomic_state_free(struct drm_atomic_state
*state
)
226 struct drm_device
*dev
;
227 struct drm_mode_config
*config
;
233 config
= &dev
->mode_config
;
235 drm_atomic_state_clear(state
);
237 DRM_DEBUG_ATOMIC("Freeing atomic state %p\n", state
);
239 if (config
->funcs
->atomic_state_free
) {
240 config
->funcs
->atomic_state_free(state
);
242 drm_atomic_state_default_release(state
);
246 EXPORT_SYMBOL(drm_atomic_state_free
);
249 * drm_atomic_get_crtc_state - get crtc state
250 * @state: global atomic state object
251 * @crtc: crtc to get state object for
253 * This function returns the crtc state for the given crtc, allocating it if
254 * needed. It will also grab the relevant crtc lock to make sure that the state
259 * Either the allocated state or the error code encoded into the pointer. When
260 * the error is EDEADLK then the w/w mutex code has detected a deadlock and the
261 * entire atomic sequence must be restarted. All other errors are fatal.
263 struct drm_crtc_state
*
264 drm_atomic_get_crtc_state(struct drm_atomic_state
*state
,
265 struct drm_crtc
*crtc
)
267 int ret
, index
= drm_crtc_index(crtc
);
268 struct drm_crtc_state
*crtc_state
;
270 WARN_ON(!state
->acquire_ctx
);
272 crtc_state
= drm_atomic_get_existing_crtc_state(state
, crtc
);
276 ret
= drm_modeset_lock(&crtc
->mutex
, state
->acquire_ctx
);
280 crtc_state
= crtc
->funcs
->atomic_duplicate_state(crtc
);
282 return ERR_PTR(-ENOMEM
);
284 state
->crtcs
[index
].state
= crtc_state
;
285 state
->crtcs
[index
].ptr
= crtc
;
286 crtc_state
->state
= state
;
288 DRM_DEBUG_ATOMIC("Added [CRTC:%d:%s] %p state to %p\n",
289 crtc
->base
.id
, crtc
->name
, crtc_state
, state
);
293 EXPORT_SYMBOL(drm_atomic_get_crtc_state
);
296 * drm_atomic_set_mode_for_crtc - set mode for CRTC
297 * @state: the CRTC whose incoming state to update
298 * @mode: kernel-internal mode to use for the CRTC, or NULL to disable
300 * Set a mode (originating from the kernel) on the desired CRTC state. Does
301 * not change any other state properties, including enable, active, or
305 * Zero on success, error code on failure. Cannot return -EDEADLK.
307 int drm_atomic_set_mode_for_crtc(struct drm_crtc_state
*state
,
308 struct drm_display_mode
*mode
)
310 struct drm_mode_modeinfo umode
;
312 /* Early return for no change. */
313 if (mode
&& memcmp(&state
->mode
, mode
, sizeof(*mode
)) == 0)
316 drm_property_unreference_blob(state
->mode_blob
);
317 state
->mode_blob
= NULL
;
320 drm_mode_convert_to_umode(&umode
, mode
);
322 drm_property_create_blob(state
->crtc
->dev
,
325 if (IS_ERR(state
->mode_blob
))
326 return PTR_ERR(state
->mode_blob
);
328 drm_mode_copy(&state
->mode
, mode
);
329 state
->enable
= true;
330 DRM_DEBUG_ATOMIC("Set [MODE:%s] for CRTC state %p\n",
333 memset(&state
->mode
, 0, sizeof(state
->mode
));
334 state
->enable
= false;
335 DRM_DEBUG_ATOMIC("Set [NOMODE] for CRTC state %p\n",
341 EXPORT_SYMBOL(drm_atomic_set_mode_for_crtc
);
344 * drm_atomic_set_mode_prop_for_crtc - set mode for CRTC
345 * @state: the CRTC whose incoming state to update
346 * @blob: pointer to blob property to use for mode
348 * Set a mode (originating from a blob property) on the desired CRTC state.
349 * This function will take a reference on the blob property for the CRTC state,
350 * and release the reference held on the state's existing mode property, if any
354 * Zero on success, error code on failure. Cannot return -EDEADLK.
356 int drm_atomic_set_mode_prop_for_crtc(struct drm_crtc_state
*state
,
357 struct drm_property_blob
*blob
)
359 if (blob
== state
->mode_blob
)
362 drm_property_unreference_blob(state
->mode_blob
);
363 state
->mode_blob
= NULL
;
365 memset(&state
->mode
, 0, sizeof(state
->mode
));
368 if (blob
->length
!= sizeof(struct drm_mode_modeinfo
) ||
369 drm_mode_convert_umode(&state
->mode
,
370 (const struct drm_mode_modeinfo
*)
374 state
->mode_blob
= drm_property_reference_blob(blob
);
375 state
->enable
= true;
376 DRM_DEBUG_ATOMIC("Set [MODE:%s] for CRTC state %p\n",
377 state
->mode
.name
, state
);
379 state
->enable
= false;
380 DRM_DEBUG_ATOMIC("Set [NOMODE] for CRTC state %p\n",
386 EXPORT_SYMBOL(drm_atomic_set_mode_prop_for_crtc
);
389 * drm_atomic_replace_property_blob - replace a blob property
390 * @blob: a pointer to the member blob to be replaced
391 * @new_blob: the new blob to replace with
392 * @replaced: whether the blob has been replaced
395 * Zero on success, error code on failure
398 drm_atomic_replace_property_blob(struct drm_property_blob
**blob
,
399 struct drm_property_blob
*new_blob
,
402 struct drm_property_blob
*old_blob
= *blob
;
404 if (old_blob
== new_blob
)
408 drm_property_unreference_blob(old_blob
);
410 drm_property_reference_blob(new_blob
);
418 drm_atomic_replace_property_blob_from_id(struct drm_crtc
*crtc
,
419 struct drm_property_blob
**blob
,
421 ssize_t expected_size
,
424 struct drm_device
*dev
= crtc
->dev
;
425 struct drm_property_blob
*new_blob
= NULL
;
428 new_blob
= drm_property_lookup_blob(dev
, blob_id
);
429 if (new_blob
== NULL
)
431 if (expected_size
> 0 && expected_size
!= new_blob
->length
)
435 drm_atomic_replace_property_blob(blob
, new_blob
, replaced
);
441 * drm_atomic_crtc_set_property - set property on CRTC
442 * @crtc: the drm CRTC to set a property on
443 * @state: the state object to update with the new property value
444 * @property: the property to set
445 * @val: the new property value
447 * Use this instead of calling crtc->atomic_set_property directly.
448 * This function handles generic/core properties and calls out to
449 * driver's ->atomic_set_property() for driver properties. To ensure
450 * consistent behavior you must call this function rather than the
451 * driver hook directly.
454 * Zero on success, error code on failure
456 int drm_atomic_crtc_set_property(struct drm_crtc
*crtc
,
457 struct drm_crtc_state
*state
, struct drm_property
*property
,
460 struct drm_device
*dev
= crtc
->dev
;
461 struct drm_mode_config
*config
= &dev
->mode_config
;
462 bool replaced
= false;
465 if (property
== config
->prop_active
)
467 else if (property
== config
->prop_mode_id
) {
468 struct drm_property_blob
*mode
=
469 drm_property_lookup_blob(dev
, val
);
470 ret
= drm_atomic_set_mode_prop_for_crtc(state
, mode
);
471 drm_property_unreference_blob(mode
);
473 } else if (property
== config
->degamma_lut_property
) {
474 ret
= drm_atomic_replace_property_blob_from_id(crtc
,
479 state
->color_mgmt_changed
= replaced
;
481 } else if (property
== config
->ctm_property
) {
482 ret
= drm_atomic_replace_property_blob_from_id(crtc
,
485 sizeof(struct drm_color_ctm
),
487 state
->color_mgmt_changed
= replaced
;
489 } else if (property
== config
->gamma_lut_property
) {
490 ret
= drm_atomic_replace_property_blob_from_id(crtc
,
495 state
->color_mgmt_changed
= replaced
;
497 } else if (crtc
->funcs
->atomic_set_property
)
498 return crtc
->funcs
->atomic_set_property(crtc
, state
, property
, val
);
504 EXPORT_SYMBOL(drm_atomic_crtc_set_property
);
507 * drm_atomic_crtc_get_property - get property value from CRTC state
508 * @crtc: the drm CRTC to set a property on
509 * @state: the state object to get the property value from
510 * @property: the property to set
511 * @val: return location for the property value
513 * This function handles generic/core properties and calls out to
514 * driver's ->atomic_get_property() for driver properties. To ensure
515 * consistent behavior you must call this function rather than the
516 * driver hook directly.
519 * Zero on success, error code on failure
522 drm_atomic_crtc_get_property(struct drm_crtc
*crtc
,
523 const struct drm_crtc_state
*state
,
524 struct drm_property
*property
, uint64_t *val
)
526 struct drm_device
*dev
= crtc
->dev
;
527 struct drm_mode_config
*config
= &dev
->mode_config
;
529 if (property
== config
->prop_active
)
530 *val
= state
->active
;
531 else if (property
== config
->prop_mode_id
)
532 *val
= (state
->mode_blob
) ? state
->mode_blob
->base
.id
: 0;
533 else if (property
== config
->degamma_lut_property
)
534 *val
= (state
->degamma_lut
) ? state
->degamma_lut
->base
.id
: 0;
535 else if (property
== config
->ctm_property
)
536 *val
= (state
->ctm
) ? state
->ctm
->base
.id
: 0;
537 else if (property
== config
->gamma_lut_property
)
538 *val
= (state
->gamma_lut
) ? state
->gamma_lut
->base
.id
: 0;
539 else if (crtc
->funcs
->atomic_get_property
)
540 return crtc
->funcs
->atomic_get_property(crtc
, state
, property
, val
);
548 * drm_atomic_crtc_check - check crtc state
549 * @crtc: crtc to check
550 * @state: crtc state to check
552 * Provides core sanity checks for crtc state.
555 * Zero on success, error code on failure
557 static int drm_atomic_crtc_check(struct drm_crtc
*crtc
,
558 struct drm_crtc_state
*state
)
560 /* NOTE: we explicitly don't enforce constraints such as primary
561 * layer covering entire screen, since that is something we want
562 * to allow (on hw that supports it). For hw that does not, it
563 * should be checked in driver's crtc->atomic_check() vfunc.
565 * TODO: Add generic modeset state checks once we support those.
568 if (state
->active
&& !state
->enable
) {
569 DRM_DEBUG_ATOMIC("[CRTC:%d:%s] active without enabled\n",
570 crtc
->base
.id
, crtc
->name
);
574 /* The state->enable vs. state->mode_blob checks can be WARN_ON,
575 * as this is a kernel-internal detail that userspace should never
576 * be able to trigger. */
577 if (drm_core_check_feature(crtc
->dev
, DRIVER_ATOMIC
) &&
578 WARN_ON(state
->enable
&& !state
->mode_blob
)) {
579 DRM_DEBUG_ATOMIC("[CRTC:%d:%s] enabled without mode blob\n",
580 crtc
->base
.id
, crtc
->name
);
584 if (drm_core_check_feature(crtc
->dev
, DRIVER_ATOMIC
) &&
585 WARN_ON(!state
->enable
&& state
->mode_blob
)) {
586 DRM_DEBUG_ATOMIC("[CRTC:%d:%s] disabled with mode blob\n",
587 crtc
->base
.id
, crtc
->name
);
592 * Reject event generation for when a CRTC is off and stays off.
593 * It wouldn't be hard to implement this, but userspace has a track
594 * record of happily burning through 100% cpu (or worse, crash) when the
595 * display pipe is suspended. To avoid all that fun just reject updates
596 * that ask for events since likely that indicates a bug in the
597 * compositor's drawing loop. This is consistent with the vblank IOCTL
598 * and legacy page_flip IOCTL which also reject service on a disabled
601 if (state
->event
&& !state
->active
&& !crtc
->state
->active
) {
602 DRM_DEBUG_ATOMIC("[CRTC:%d] requesting event but off\n",
611 * drm_atomic_get_plane_state - get plane state
612 * @state: global atomic state object
613 * @plane: plane to get state object for
615 * This function returns the plane state for the given plane, allocating it if
616 * needed. It will also grab the relevant plane lock to make sure that the state
621 * Either the allocated state or the error code encoded into the pointer. When
622 * the error is EDEADLK then the w/w mutex code has detected a deadlock and the
623 * entire atomic sequence must be restarted. All other errors are fatal.
625 struct drm_plane_state
*
626 drm_atomic_get_plane_state(struct drm_atomic_state
*state
,
627 struct drm_plane
*plane
)
629 int ret
, index
= drm_plane_index(plane
);
630 struct drm_plane_state
*plane_state
;
632 WARN_ON(!state
->acquire_ctx
);
634 plane_state
= drm_atomic_get_existing_plane_state(state
, plane
);
638 ret
= drm_modeset_lock(&plane
->mutex
, state
->acquire_ctx
);
642 plane_state
= plane
->funcs
->atomic_duplicate_state(plane
);
644 return ERR_PTR(-ENOMEM
);
646 state
->planes
[index
].state
= plane_state
;
647 state
->planes
[index
].ptr
= plane
;
648 plane_state
->state
= state
;
650 DRM_DEBUG_ATOMIC("Added [PLANE:%d:%s] %p state to %p\n",
651 plane
->base
.id
, plane
->name
, plane_state
, state
);
653 if (plane_state
->crtc
) {
654 struct drm_crtc_state
*crtc_state
;
656 crtc_state
= drm_atomic_get_crtc_state(state
,
658 if (IS_ERR(crtc_state
))
659 return ERR_CAST(crtc_state
);
664 EXPORT_SYMBOL(drm_atomic_get_plane_state
);
667 * drm_atomic_plane_set_property - set property on plane
668 * @plane: the drm plane to set a property on
669 * @state: the state object to update with the new property value
670 * @property: the property to set
671 * @val: the new property value
673 * Use this instead of calling plane->atomic_set_property directly.
674 * This function handles generic/core properties and calls out to
675 * driver's ->atomic_set_property() for driver properties. To ensure
676 * consistent behavior you must call this function rather than the
677 * driver hook directly.
680 * Zero on success, error code on failure
682 int drm_atomic_plane_set_property(struct drm_plane
*plane
,
683 struct drm_plane_state
*state
, struct drm_property
*property
,
686 struct drm_device
*dev
= plane
->dev
;
687 struct drm_mode_config
*config
= &dev
->mode_config
;
689 if (property
== config
->prop_fb_id
) {
690 struct drm_framebuffer
*fb
= drm_framebuffer_lookup(dev
, val
);
691 drm_atomic_set_fb_for_plane(state
, fb
);
693 drm_framebuffer_unreference(fb
);
694 } else if (property
== config
->prop_crtc_id
) {
695 struct drm_crtc
*crtc
= drm_crtc_find(dev
, val
);
696 return drm_atomic_set_crtc_for_plane(state
, crtc
);
697 } else if (property
== config
->prop_crtc_x
) {
698 state
->crtc_x
= U642I64(val
);
699 } else if (property
== config
->prop_crtc_y
) {
700 state
->crtc_y
= U642I64(val
);
701 } else if (property
== config
->prop_crtc_w
) {
703 } else if (property
== config
->prop_crtc_h
) {
705 } else if (property
== config
->prop_src_x
) {
707 } else if (property
== config
->prop_src_y
) {
709 } else if (property
== config
->prop_src_w
) {
711 } else if (property
== config
->prop_src_h
) {
713 } else if (property
== config
->rotation_property
) {
714 state
->rotation
= val
;
715 } else if (plane
->funcs
->atomic_set_property
) {
716 return plane
->funcs
->atomic_set_property(plane
, state
,
724 EXPORT_SYMBOL(drm_atomic_plane_set_property
);
727 * drm_atomic_plane_get_property - get property value from plane state
728 * @plane: the drm plane to set a property on
729 * @state: the state object to get the property value from
730 * @property: the property to set
731 * @val: return location for the property value
733 * This function handles generic/core properties and calls out to
734 * driver's ->atomic_get_property() for driver properties. To ensure
735 * consistent behavior you must call this function rather than the
736 * driver hook directly.
739 * Zero on success, error code on failure
742 drm_atomic_plane_get_property(struct drm_plane
*plane
,
743 const struct drm_plane_state
*state
,
744 struct drm_property
*property
, uint64_t *val
)
746 struct drm_device
*dev
= plane
->dev
;
747 struct drm_mode_config
*config
= &dev
->mode_config
;
749 if (property
== config
->prop_fb_id
) {
750 *val
= (state
->fb
) ? state
->fb
->base
.id
: 0;
751 } else if (property
== config
->prop_crtc_id
) {
752 *val
= (state
->crtc
) ? state
->crtc
->base
.id
: 0;
753 } else if (property
== config
->prop_crtc_x
) {
754 *val
= I642U64(state
->crtc_x
);
755 } else if (property
== config
->prop_crtc_y
) {
756 *val
= I642U64(state
->crtc_y
);
757 } else if (property
== config
->prop_crtc_w
) {
758 *val
= state
->crtc_w
;
759 } else if (property
== config
->prop_crtc_h
) {
760 *val
= state
->crtc_h
;
761 } else if (property
== config
->prop_src_x
) {
763 } else if (property
== config
->prop_src_y
) {
765 } else if (property
== config
->prop_src_w
) {
767 } else if (property
== config
->prop_src_h
) {
769 } else if (property
== config
->rotation_property
) {
770 *val
= state
->rotation
;
771 } else if (plane
->funcs
->atomic_get_property
) {
772 return plane
->funcs
->atomic_get_property(plane
, state
, property
, val
);
781 plane_switching_crtc(struct drm_atomic_state
*state
,
782 struct drm_plane
*plane
,
783 struct drm_plane_state
*plane_state
)
785 if (!plane
->state
->crtc
|| !plane_state
->crtc
)
788 if (plane
->state
->crtc
== plane_state
->crtc
)
791 /* This could be refined, but currently there's no helper or driver code
792 * to implement direct switching of active planes nor userspace to take
793 * advantage of more direct plane switching without the intermediate
800 * drm_atomic_plane_check - check plane state
801 * @plane: plane to check
802 * @state: plane state to check
804 * Provides core sanity checks for plane state.
807 * Zero on success, error code on failure
809 static int drm_atomic_plane_check(struct drm_plane
*plane
,
810 struct drm_plane_state
*state
)
812 unsigned int fb_width
, fb_height
;
815 /* either *both* CRTC and FB must be set, or neither */
816 if (WARN_ON(state
->crtc
&& !state
->fb
)) {
817 DRM_DEBUG_ATOMIC("CRTC set but no FB\n");
819 } else if (WARN_ON(state
->fb
&& !state
->crtc
)) {
820 DRM_DEBUG_ATOMIC("FB set but no CRTC\n");
824 /* if disabled, we don't care about the rest of the state: */
828 /* Check whether this plane is usable on this CRTC */
829 if (!(plane
->possible_crtcs
& drm_crtc_mask(state
->crtc
))) {
830 DRM_DEBUG_ATOMIC("Invalid crtc for plane\n");
834 /* Check whether this plane supports the fb pixel format. */
835 ret
= drm_plane_check_pixel_format(plane
, state
->fb
->pixel_format
);
837 DRM_DEBUG_ATOMIC("Invalid pixel format %s\n",
838 drm_get_format_name(state
->fb
->pixel_format
));
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_property_find(dev
, 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_free 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 if (ret
|| arg
->flags
& DRM_MODE_ATOMIC_TEST_ONLY
)
1775 drm_atomic_state_free(state
);
1777 drm_modeset_drop_locks(&ctx
);
1778 drm_modeset_acquire_fini(&ctx
);