2 * Copyright (C) 2014 Red Hat
3 * Copyright (C) 2014 Intel Corp.
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
12 * The above copyright notice and this permission notice shall be included in
13 * all copies or substantial portions of the Software.
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
19 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
20 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
21 * OTHER DEALINGS IN THE SOFTWARE.
24 * Rob Clark <robdclark@gmail.com>
25 * Daniel Vetter <daniel.vetter@ffwll.ch>
30 #include <drm/drm_atomic.h>
31 #include <drm/drm_mode.h>
32 #include <drm/drm_plane_helper.h>
34 #include "drm_crtc_internal.h"
36 static void crtc_commit_free(struct kref
*kref
)
38 struct drm_crtc_commit
*commit
=
39 container_of(kref
, struct drm_crtc_commit
, ref
);
44 void drm_crtc_commit_put(struct drm_crtc_commit
*commit
)
46 kref_put(&commit
->ref
, crtc_commit_free
);
48 EXPORT_SYMBOL(drm_crtc_commit_put
);
51 * drm_atomic_state_default_release -
52 * release memory initialized by drm_atomic_state_init
53 * @state: atomic state
55 * Free all the memory allocated by drm_atomic_state_init.
56 * This is useful for drivers that subclass the atomic state.
58 void drm_atomic_state_default_release(struct drm_atomic_state
*state
)
60 kfree(state
->connectors
);
64 EXPORT_SYMBOL(drm_atomic_state_default_release
);
67 * drm_atomic_state_init - init new atomic state
69 * @state: atomic state
71 * Default implementation for filling in a new atomic state.
72 * This is useful for drivers that subclass the atomic state.
75 drm_atomic_state_init(struct drm_device
*dev
, struct drm_atomic_state
*state
)
77 kref_init(&state
->ref
);
79 /* TODO legacy paths should maybe do a better job about
80 * setting this appropriately?
82 state
->allow_modeset
= true;
84 state
->crtcs
= kcalloc(dev
->mode_config
.num_crtc
,
85 sizeof(*state
->crtcs
), GFP_KERNEL
);
88 state
->planes
= kcalloc(dev
->mode_config
.num_total_plane
,
89 sizeof(*state
->planes
), GFP_KERNEL
);
95 DRM_DEBUG_ATOMIC("Allocated atomic state %p\n", state
);
99 drm_atomic_state_default_release(state
);
102 EXPORT_SYMBOL(drm_atomic_state_init
);
105 * drm_atomic_state_alloc - allocate atomic state
108 * This allocates an empty atomic state to track updates.
110 struct drm_atomic_state
*
111 drm_atomic_state_alloc(struct drm_device
*dev
)
113 struct drm_mode_config
*config
= &dev
->mode_config
;
114 struct drm_atomic_state
*state
;
116 if (!config
->funcs
->atomic_state_alloc
) {
117 state
= kzalloc(sizeof(*state
), GFP_KERNEL
);
120 if (drm_atomic_state_init(dev
, state
) < 0) {
127 return config
->funcs
->atomic_state_alloc(dev
);
129 EXPORT_SYMBOL(drm_atomic_state_alloc
);
132 * drm_atomic_state_default_clear - clear base atomic state
133 * @state: atomic state
135 * Default implementation for clearing atomic state.
136 * This is useful for drivers that subclass the atomic state.
138 void drm_atomic_state_default_clear(struct drm_atomic_state
*state
)
140 struct drm_device
*dev
= state
->dev
;
141 struct drm_mode_config
*config
= &dev
->mode_config
;
144 DRM_DEBUG_ATOMIC("Clearing atomic state %p\n", state
);
146 for (i
= 0; i
< state
->num_connector
; i
++) {
147 struct drm_connector
*connector
= state
->connectors
[i
].ptr
;
152 connector
->funcs
->atomic_destroy_state(connector
,
153 state
->connectors
[i
].state
);
154 state
->connectors
[i
].ptr
= NULL
;
155 state
->connectors
[i
].state
= NULL
;
156 drm_connector_unreference(connector
);
159 for (i
= 0; i
< config
->num_crtc
; i
++) {
160 struct drm_crtc
*crtc
= state
->crtcs
[i
].ptr
;
165 crtc
->funcs
->atomic_destroy_state(crtc
,
166 state
->crtcs
[i
].state
);
168 if (state
->crtcs
[i
].commit
) {
169 kfree(state
->crtcs
[i
].commit
->event
);
170 state
->crtcs
[i
].commit
->event
= NULL
;
171 drm_crtc_commit_put(state
->crtcs
[i
].commit
);
174 state
->crtcs
[i
].commit
= NULL
;
175 state
->crtcs
[i
].ptr
= NULL
;
176 state
->crtcs
[i
].state
= NULL
;
179 for (i
= 0; i
< config
->num_total_plane
; i
++) {
180 struct drm_plane
*plane
= state
->planes
[i
].ptr
;
185 plane
->funcs
->atomic_destroy_state(plane
,
186 state
->planes
[i
].state
);
187 state
->planes
[i
].ptr
= NULL
;
188 state
->planes
[i
].state
= NULL
;
191 EXPORT_SYMBOL(drm_atomic_state_default_clear
);
194 * drm_atomic_state_clear - clear state object
195 * @state: atomic state
197 * When the w/w mutex algorithm detects a deadlock we need to back off and drop
198 * all locks. So someone else could sneak in and change the current modeset
199 * configuration. Which means that all the state assembled in @state is no
200 * longer an atomic update to the current state, but to some arbitrary earlier
201 * state. Which could break assumptions the driver's ->atomic_check likely
204 * Hence we must clear all cached state and completely start over, using this
207 void drm_atomic_state_clear(struct drm_atomic_state
*state
)
209 struct drm_device
*dev
= state
->dev
;
210 struct drm_mode_config
*config
= &dev
->mode_config
;
212 if (config
->funcs
->atomic_state_clear
)
213 config
->funcs
->atomic_state_clear(state
);
215 drm_atomic_state_default_clear(state
);
217 EXPORT_SYMBOL(drm_atomic_state_clear
);
220 * __drm_atomic_state_free - free all memory for an atomic state
221 * @ref: This atomic state to deallocate
223 * This frees all memory associated with an atomic state, including all the
224 * per-object state for planes, crtcs and connectors.
226 void __drm_atomic_state_free(struct kref
*ref
)
228 struct drm_atomic_state
*state
= container_of(ref
, typeof(*state
), ref
);
229 struct drm_mode_config
*config
= &state
->dev
->mode_config
;
231 drm_atomic_state_clear(state
);
233 DRM_DEBUG_ATOMIC("Freeing atomic state %p\n", state
);
235 if (config
->funcs
->atomic_state_free
) {
236 config
->funcs
->atomic_state_free(state
);
238 drm_atomic_state_default_release(state
);
242 EXPORT_SYMBOL(__drm_atomic_state_free
);
245 * drm_atomic_get_crtc_state - get crtc state
246 * @state: global atomic state object
247 * @crtc: crtc to get state object for
249 * This function returns the crtc state for the given crtc, allocating it if
250 * needed. It will also grab the relevant crtc lock to make sure that the state
255 * Either the allocated state or the error code encoded into the pointer. When
256 * the error is EDEADLK then the w/w mutex code has detected a deadlock and the
257 * entire atomic sequence must be restarted. All other errors are fatal.
259 struct drm_crtc_state
*
260 drm_atomic_get_crtc_state(struct drm_atomic_state
*state
,
261 struct drm_crtc
*crtc
)
263 int ret
, index
= drm_crtc_index(crtc
);
264 struct drm_crtc_state
*crtc_state
;
266 WARN_ON(!state
->acquire_ctx
);
268 crtc_state
= drm_atomic_get_existing_crtc_state(state
, crtc
);
272 ret
= drm_modeset_lock(&crtc
->mutex
, state
->acquire_ctx
);
276 crtc_state
= crtc
->funcs
->atomic_duplicate_state(crtc
);
278 return ERR_PTR(-ENOMEM
);
280 state
->crtcs
[index
].state
= crtc_state
;
281 state
->crtcs
[index
].ptr
= crtc
;
282 crtc_state
->state
= state
;
284 DRM_DEBUG_ATOMIC("Added [CRTC:%d:%s] %p state to %p\n",
285 crtc
->base
.id
, crtc
->name
, crtc_state
, state
);
289 EXPORT_SYMBOL(drm_atomic_get_crtc_state
);
292 * drm_atomic_set_mode_for_crtc - set mode for CRTC
293 * @state: the CRTC whose incoming state to update
294 * @mode: kernel-internal mode to use for the CRTC, or NULL to disable
296 * Set a mode (originating from the kernel) on the desired CRTC state. Does
297 * not change any other state properties, including enable, active, or
301 * Zero on success, error code on failure. Cannot return -EDEADLK.
303 int drm_atomic_set_mode_for_crtc(struct drm_crtc_state
*state
,
304 struct drm_display_mode
*mode
)
306 struct drm_mode_modeinfo umode
;
308 /* Early return for no change. */
309 if (mode
&& memcmp(&state
->mode
, mode
, sizeof(*mode
)) == 0)
312 drm_property_unreference_blob(state
->mode_blob
);
313 state
->mode_blob
= NULL
;
316 drm_mode_convert_to_umode(&umode
, mode
);
318 drm_property_create_blob(state
->crtc
->dev
,
321 if (IS_ERR(state
->mode_blob
))
322 return PTR_ERR(state
->mode_blob
);
324 drm_mode_copy(&state
->mode
, mode
);
325 state
->enable
= true;
326 DRM_DEBUG_ATOMIC("Set [MODE:%s] for CRTC state %p\n",
329 memset(&state
->mode
, 0, sizeof(state
->mode
));
330 state
->enable
= false;
331 DRM_DEBUG_ATOMIC("Set [NOMODE] for CRTC state %p\n",
337 EXPORT_SYMBOL(drm_atomic_set_mode_for_crtc
);
340 * drm_atomic_set_mode_prop_for_crtc - set mode for CRTC
341 * @state: the CRTC whose incoming state to update
342 * @blob: pointer to blob property to use for mode
344 * Set a mode (originating from a blob property) on the desired CRTC state.
345 * This function will take a reference on the blob property for the CRTC state,
346 * and release the reference held on the state's existing mode property, if any
350 * Zero on success, error code on failure. Cannot return -EDEADLK.
352 int drm_atomic_set_mode_prop_for_crtc(struct drm_crtc_state
*state
,
353 struct drm_property_blob
*blob
)
355 if (blob
== state
->mode_blob
)
358 drm_property_unreference_blob(state
->mode_blob
);
359 state
->mode_blob
= NULL
;
361 memset(&state
->mode
, 0, sizeof(state
->mode
));
364 if (blob
->length
!= sizeof(struct drm_mode_modeinfo
) ||
365 drm_mode_convert_umode(&state
->mode
,
366 (const struct drm_mode_modeinfo
*)
370 state
->mode_blob
= drm_property_reference_blob(blob
);
371 state
->enable
= true;
372 DRM_DEBUG_ATOMIC("Set [MODE:%s] for CRTC state %p\n",
373 state
->mode
.name
, state
);
375 state
->enable
= false;
376 DRM_DEBUG_ATOMIC("Set [NOMODE] for CRTC state %p\n",
382 EXPORT_SYMBOL(drm_atomic_set_mode_prop_for_crtc
);
385 * drm_atomic_replace_property_blob - replace a blob property
386 * @blob: a pointer to the member blob to be replaced
387 * @new_blob: the new blob to replace with
388 * @replaced: whether the blob has been replaced
391 * Zero on success, error code on failure
394 drm_atomic_replace_property_blob(struct drm_property_blob
**blob
,
395 struct drm_property_blob
*new_blob
,
398 struct drm_property_blob
*old_blob
= *blob
;
400 if (old_blob
== new_blob
)
403 drm_property_unreference_blob(old_blob
);
405 drm_property_reference_blob(new_blob
);
413 drm_atomic_replace_property_blob_from_id(struct drm_crtc
*crtc
,
414 struct drm_property_blob
**blob
,
416 ssize_t expected_size
,
419 struct drm_device
*dev
= crtc
->dev
;
420 struct drm_property_blob
*new_blob
= NULL
;
423 new_blob
= drm_property_lookup_blob(dev
, blob_id
);
424 if (new_blob
== NULL
)
426 if (expected_size
> 0 && expected_size
!= new_blob
->length
)
430 drm_atomic_replace_property_blob(blob
, new_blob
, replaced
);
436 * drm_atomic_crtc_set_property - set property on CRTC
437 * @crtc: the drm CRTC to set a property on
438 * @state: the state object to update with the new property value
439 * @property: the property to set
440 * @val: the new property value
442 * Use this instead of calling crtc->atomic_set_property directly.
443 * This function handles generic/core properties and calls out to
444 * driver's ->atomic_set_property() for driver properties. To ensure
445 * consistent behavior you must call this function rather than the
446 * driver hook directly.
449 * Zero on success, error code on failure
451 int drm_atomic_crtc_set_property(struct drm_crtc
*crtc
,
452 struct drm_crtc_state
*state
, struct drm_property
*property
,
455 struct drm_device
*dev
= crtc
->dev
;
456 struct drm_mode_config
*config
= &dev
->mode_config
;
457 bool replaced
= false;
460 if (property
== config
->prop_active
)
462 else if (property
== config
->prop_mode_id
) {
463 struct drm_property_blob
*mode
=
464 drm_property_lookup_blob(dev
, val
);
465 ret
= drm_atomic_set_mode_prop_for_crtc(state
, mode
);
466 drm_property_unreference_blob(mode
);
468 } else if (property
== config
->degamma_lut_property
) {
469 ret
= drm_atomic_replace_property_blob_from_id(crtc
,
474 state
->color_mgmt_changed
|= replaced
;
476 } else if (property
== config
->ctm_property
) {
477 ret
= drm_atomic_replace_property_blob_from_id(crtc
,
480 sizeof(struct drm_color_ctm
),
482 state
->color_mgmt_changed
|= replaced
;
484 } else if (property
== config
->gamma_lut_property
) {
485 ret
= drm_atomic_replace_property_blob_from_id(crtc
,
490 state
->color_mgmt_changed
|= replaced
;
492 } else if (crtc
->funcs
->atomic_set_property
)
493 return crtc
->funcs
->atomic_set_property(crtc
, state
, property
, val
);
499 EXPORT_SYMBOL(drm_atomic_crtc_set_property
);
502 * drm_atomic_crtc_get_property - get property value from CRTC state
503 * @crtc: the drm CRTC to set a property on
504 * @state: the state object to get the property value from
505 * @property: the property to set
506 * @val: return location for the property value
508 * This function handles generic/core properties and calls out to
509 * driver's ->atomic_get_property() for driver properties. To ensure
510 * consistent behavior you must call this function rather than the
511 * driver hook directly.
514 * Zero on success, error code on failure
517 drm_atomic_crtc_get_property(struct drm_crtc
*crtc
,
518 const struct drm_crtc_state
*state
,
519 struct drm_property
*property
, uint64_t *val
)
521 struct drm_device
*dev
= crtc
->dev
;
522 struct drm_mode_config
*config
= &dev
->mode_config
;
524 if (property
== config
->prop_active
)
525 *val
= state
->active
;
526 else if (property
== config
->prop_mode_id
)
527 *val
= (state
->mode_blob
) ? state
->mode_blob
->base
.id
: 0;
528 else if (property
== config
->degamma_lut_property
)
529 *val
= (state
->degamma_lut
) ? state
->degamma_lut
->base
.id
: 0;
530 else if (property
== config
->ctm_property
)
531 *val
= (state
->ctm
) ? state
->ctm
->base
.id
: 0;
532 else if (property
== config
->gamma_lut_property
)
533 *val
= (state
->gamma_lut
) ? state
->gamma_lut
->base
.id
: 0;
534 else if (crtc
->funcs
->atomic_get_property
)
535 return crtc
->funcs
->atomic_get_property(crtc
, state
, property
, val
);
543 * drm_atomic_crtc_check - check crtc state
544 * @crtc: crtc to check
545 * @state: crtc state to check
547 * Provides core sanity checks for crtc state.
550 * Zero on success, error code on failure
552 static int drm_atomic_crtc_check(struct drm_crtc
*crtc
,
553 struct drm_crtc_state
*state
)
555 /* NOTE: we explicitly don't enforce constraints such as primary
556 * layer covering entire screen, since that is something we want
557 * to allow (on hw that supports it). For hw that does not, it
558 * should be checked in driver's crtc->atomic_check() vfunc.
560 * TODO: Add generic modeset state checks once we support those.
563 if (state
->active
&& !state
->enable
) {
564 DRM_DEBUG_ATOMIC("[CRTC:%d:%s] active without enabled\n",
565 crtc
->base
.id
, crtc
->name
);
569 /* The state->enable vs. state->mode_blob checks can be WARN_ON,
570 * as this is a kernel-internal detail that userspace should never
571 * be able to trigger. */
572 if (drm_core_check_feature(crtc
->dev
, DRIVER_ATOMIC
) &&
573 WARN_ON(state
->enable
&& !state
->mode_blob
)) {
574 DRM_DEBUG_ATOMIC("[CRTC:%d:%s] enabled without mode blob\n",
575 crtc
->base
.id
, crtc
->name
);
579 if (drm_core_check_feature(crtc
->dev
, DRIVER_ATOMIC
) &&
580 WARN_ON(!state
->enable
&& state
->mode_blob
)) {
581 DRM_DEBUG_ATOMIC("[CRTC:%d:%s] disabled with mode blob\n",
582 crtc
->base
.id
, crtc
->name
);
587 * Reject event generation for when a CRTC is off and stays off.
588 * It wouldn't be hard to implement this, but userspace has a track
589 * record of happily burning through 100% cpu (or worse, crash) when the
590 * display pipe is suspended. To avoid all that fun just reject updates
591 * that ask for events since likely that indicates a bug in the
592 * compositor's drawing loop. This is consistent with the vblank IOCTL
593 * and legacy page_flip IOCTL which also reject service on a disabled
596 if (state
->event
&& !state
->active
&& !crtc
->state
->active
) {
597 DRM_DEBUG_ATOMIC("[CRTC:%d] requesting event but off\n",
606 * drm_atomic_get_plane_state - get plane state
607 * @state: global atomic state object
608 * @plane: plane to get state object for
610 * This function returns the plane state for the given plane, allocating it if
611 * needed. It will also grab the relevant plane lock to make sure that the state
616 * Either the allocated state or the error code encoded into the pointer. When
617 * the error is EDEADLK then the w/w mutex code has detected a deadlock and the
618 * entire atomic sequence must be restarted. All other errors are fatal.
620 struct drm_plane_state
*
621 drm_atomic_get_plane_state(struct drm_atomic_state
*state
,
622 struct drm_plane
*plane
)
624 int ret
, index
= drm_plane_index(plane
);
625 struct drm_plane_state
*plane_state
;
627 WARN_ON(!state
->acquire_ctx
);
629 plane_state
= drm_atomic_get_existing_plane_state(state
, plane
);
633 ret
= drm_modeset_lock(&plane
->mutex
, state
->acquire_ctx
);
637 plane_state
= plane
->funcs
->atomic_duplicate_state(plane
);
639 return ERR_PTR(-ENOMEM
);
641 state
->planes
[index
].state
= plane_state
;
642 state
->planes
[index
].ptr
= plane
;
643 plane_state
->state
= state
;
645 DRM_DEBUG_ATOMIC("Added [PLANE:%d:%s] %p state to %p\n",
646 plane
->base
.id
, plane
->name
, plane_state
, state
);
648 if (plane_state
->crtc
) {
649 struct drm_crtc_state
*crtc_state
;
651 crtc_state
= drm_atomic_get_crtc_state(state
,
653 if (IS_ERR(crtc_state
))
654 return ERR_CAST(crtc_state
);
659 EXPORT_SYMBOL(drm_atomic_get_plane_state
);
662 * drm_atomic_plane_set_property - set property on plane
663 * @plane: the drm plane to set a property on
664 * @state: the state object to update with the new property value
665 * @property: the property to set
666 * @val: the new property value
668 * Use this instead of calling plane->atomic_set_property directly.
669 * This function handles generic/core properties and calls out to
670 * driver's ->atomic_set_property() for driver properties. To ensure
671 * consistent behavior you must call this function rather than the
672 * driver hook directly.
675 * Zero on success, error code on failure
677 int drm_atomic_plane_set_property(struct drm_plane
*plane
,
678 struct drm_plane_state
*state
, struct drm_property
*property
,
681 struct drm_device
*dev
= plane
->dev
;
682 struct drm_mode_config
*config
= &dev
->mode_config
;
684 if (property
== config
->prop_fb_id
) {
685 struct drm_framebuffer
*fb
= drm_framebuffer_lookup(dev
, val
);
686 drm_atomic_set_fb_for_plane(state
, fb
);
688 drm_framebuffer_unreference(fb
);
689 } else if (property
== config
->prop_crtc_id
) {
690 struct drm_crtc
*crtc
= drm_crtc_find(dev
, val
);
691 return drm_atomic_set_crtc_for_plane(state
, crtc
);
692 } else if (property
== config
->prop_crtc_x
) {
693 state
->crtc_x
= U642I64(val
);
694 } else if (property
== config
->prop_crtc_y
) {
695 state
->crtc_y
= U642I64(val
);
696 } else if (property
== config
->prop_crtc_w
) {
698 } else if (property
== config
->prop_crtc_h
) {
700 } else if (property
== config
->prop_src_x
) {
702 } else if (property
== config
->prop_src_y
) {
704 } else if (property
== config
->prop_src_w
) {
706 } else if (property
== config
->prop_src_h
) {
708 } else if (property
== plane
->rotation_property
) {
709 if (!is_power_of_2(val
& DRM_ROTATE_MASK
))
711 state
->rotation
= val
;
712 } else if (property
== plane
->zpos_property
) {
714 } else if (plane
->funcs
->atomic_set_property
) {
715 return plane
->funcs
->atomic_set_property(plane
, state
,
723 EXPORT_SYMBOL(drm_atomic_plane_set_property
);
726 * drm_atomic_plane_get_property - get property value from plane state
727 * @plane: the drm plane to set a property on
728 * @state: the state object to get the property value from
729 * @property: the property to set
730 * @val: return location for the property value
732 * This function handles generic/core properties and calls out to
733 * driver's ->atomic_get_property() for driver properties. To ensure
734 * consistent behavior you must call this function rather than the
735 * driver hook directly.
738 * Zero on success, error code on failure
741 drm_atomic_plane_get_property(struct drm_plane
*plane
,
742 const struct drm_plane_state
*state
,
743 struct drm_property
*property
, uint64_t *val
)
745 struct drm_device
*dev
= plane
->dev
;
746 struct drm_mode_config
*config
= &dev
->mode_config
;
748 if (property
== config
->prop_fb_id
) {
749 *val
= (state
->fb
) ? state
->fb
->base
.id
: 0;
750 } else if (property
== config
->prop_crtc_id
) {
751 *val
= (state
->crtc
) ? state
->crtc
->base
.id
: 0;
752 } else if (property
== config
->prop_crtc_x
) {
753 *val
= I642U64(state
->crtc_x
);
754 } else if (property
== config
->prop_crtc_y
) {
755 *val
= I642U64(state
->crtc_y
);
756 } else if (property
== config
->prop_crtc_w
) {
757 *val
= state
->crtc_w
;
758 } else if (property
== config
->prop_crtc_h
) {
759 *val
= state
->crtc_h
;
760 } else if (property
== config
->prop_src_x
) {
762 } else if (property
== config
->prop_src_y
) {
764 } else if (property
== config
->prop_src_w
) {
766 } else if (property
== config
->prop_src_h
) {
768 } else if (property
== plane
->rotation_property
) {
769 *val
= state
->rotation
;
770 } else if (property
== plane
->zpos_property
) {
772 } else if (plane
->funcs
->atomic_get_property
) {
773 return plane
->funcs
->atomic_get_property(plane
, state
, property
, val
);
782 plane_switching_crtc(struct drm_atomic_state
*state
,
783 struct drm_plane
*plane
,
784 struct drm_plane_state
*plane_state
)
786 if (!plane
->state
->crtc
|| !plane_state
->crtc
)
789 if (plane
->state
->crtc
== plane_state
->crtc
)
792 /* This could be refined, but currently there's no helper or driver code
793 * to implement direct switching of active planes nor userspace to take
794 * advantage of more direct plane switching without the intermediate
801 * drm_atomic_plane_check - check plane state
802 * @plane: plane to check
803 * @state: plane state to check
805 * Provides core sanity checks for plane state.
808 * Zero on success, error code on failure
810 static int drm_atomic_plane_check(struct drm_plane
*plane
,
811 struct drm_plane_state
*state
)
813 unsigned int fb_width
, fb_height
;
816 /* either *both* CRTC and FB must be set, or neither */
817 if (WARN_ON(state
->crtc
&& !state
->fb
)) {
818 DRM_DEBUG_ATOMIC("CRTC set but no FB\n");
820 } else if (WARN_ON(state
->fb
&& !state
->crtc
)) {
821 DRM_DEBUG_ATOMIC("FB set but no CRTC\n");
825 /* if disabled, we don't care about the rest of the state: */
829 /* Check whether this plane is usable on this CRTC */
830 if (!(plane
->possible_crtcs
& drm_crtc_mask(state
->crtc
))) {
831 DRM_DEBUG_ATOMIC("Invalid crtc for plane\n");
835 /* Check whether this plane supports the fb pixel format. */
836 ret
= drm_plane_check_pixel_format(plane
, state
->fb
->pixel_format
);
838 char *format_name
= drm_get_format_name(state
->fb
->pixel_format
);
839 DRM_DEBUG_ATOMIC("Invalid pixel format %s\n", format_name
);
844 /* Give drivers some help against integer overflows */
845 if (state
->crtc_w
> INT_MAX
||
846 state
->crtc_x
> INT_MAX
- (int32_t) state
->crtc_w
||
847 state
->crtc_h
> INT_MAX
||
848 state
->crtc_y
> INT_MAX
- (int32_t) state
->crtc_h
) {
849 DRM_DEBUG_ATOMIC("Invalid CRTC coordinates %ux%u+%d+%d\n",
850 state
->crtc_w
, state
->crtc_h
,
851 state
->crtc_x
, state
->crtc_y
);
855 fb_width
= state
->fb
->width
<< 16;
856 fb_height
= state
->fb
->height
<< 16;
858 /* Make sure source coordinates are inside the fb. */
859 if (state
->src_w
> fb_width
||
860 state
->src_x
> fb_width
- state
->src_w
||
861 state
->src_h
> fb_height
||
862 state
->src_y
> fb_height
- state
->src_h
) {
863 DRM_DEBUG_ATOMIC("Invalid source coordinates "
864 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
865 state
->src_w
>> 16, ((state
->src_w
& 0xffff) * 15625) >> 10,
866 state
->src_h
>> 16, ((state
->src_h
& 0xffff) * 15625) >> 10,
867 state
->src_x
>> 16, ((state
->src_x
& 0xffff) * 15625) >> 10,
868 state
->src_y
>> 16, ((state
->src_y
& 0xffff) * 15625) >> 10);
872 if (plane_switching_crtc(state
->state
, plane
, state
)) {
873 DRM_DEBUG_ATOMIC("[PLANE:%d:%s] switching CRTC directly\n",
874 plane
->base
.id
, plane
->name
);
882 * drm_atomic_get_connector_state - get connector state
883 * @state: global atomic state object
884 * @connector: connector to get state object for
886 * This function returns the connector state for the given connector,
887 * allocating it if needed. It will also grab the relevant connector lock to
888 * make sure that the state is consistent.
892 * Either the allocated state or the error code encoded into the pointer. When
893 * the error is EDEADLK then the w/w mutex code has detected a deadlock and the
894 * entire atomic sequence must be restarted. All other errors are fatal.
896 struct drm_connector_state
*
897 drm_atomic_get_connector_state(struct drm_atomic_state
*state
,
898 struct drm_connector
*connector
)
901 struct drm_mode_config
*config
= &connector
->dev
->mode_config
;
902 struct drm_connector_state
*connector_state
;
904 WARN_ON(!state
->acquire_ctx
);
906 ret
= drm_modeset_lock(&config
->connection_mutex
, state
->acquire_ctx
);
910 index
= drm_connector_index(connector
);
912 if (index
>= state
->num_connector
) {
913 struct __drm_connnectors_state
*c
;
914 int alloc
= max(index
+ 1, config
->num_connector
);
916 c
= krealloc(state
->connectors
, alloc
* sizeof(*state
->connectors
), GFP_KERNEL
);
918 return ERR_PTR(-ENOMEM
);
920 state
->connectors
= c
;
921 memset(&state
->connectors
[state
->num_connector
], 0,
922 sizeof(*state
->connectors
) * (alloc
- state
->num_connector
));
924 state
->num_connector
= alloc
;
927 if (state
->connectors
[index
].state
)
928 return state
->connectors
[index
].state
;
930 connector_state
= connector
->funcs
->atomic_duplicate_state(connector
);
931 if (!connector_state
)
932 return ERR_PTR(-ENOMEM
);
934 drm_connector_reference(connector
);
935 state
->connectors
[index
].state
= connector_state
;
936 state
->connectors
[index
].ptr
= 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_fence_for_plane - set fence for plane
1151 * @plane_state: atomic state object for the plane
1152 * @fence: dma_fence to use for the plane
1154 * Helper to setup the plane_state fence in case it is not set yet.
1155 * By using this drivers doesn't need to worry if the user choose
1156 * implicit or explicit fencing.
1158 * This function will not set the fence to the state if it was set
1159 * via explicit fencing interfaces on the atomic ioctl. It will
1160 * all drope the reference to the fence as we not storing it
1163 * Otherwise, if plane_state->fence is not set this function we
1164 * just set it with the received implict fence.
1167 drm_atomic_set_fence_for_plane(struct drm_plane_state
*plane_state
,
1168 struct dma_fence
*fence
)
1170 if (plane_state
->fence
) {
1171 dma_fence_put(fence
);
1175 plane_state
->fence
= fence
;
1177 EXPORT_SYMBOL(drm_atomic_set_fence_for_plane
);
1180 * drm_atomic_set_crtc_for_connector - set crtc for connector
1181 * @conn_state: atomic state object for the connector
1182 * @crtc: crtc to use for the connector
1184 * Changing the assigned crtc for a connector requires us to grab the lock and
1185 * state for the new crtc, as needed. This function takes care of all these
1186 * details besides updating the pointer in the state object itself.
1189 * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK
1190 * then the w/w mutex code has detected a deadlock and the entire atomic
1191 * sequence must be restarted. All other errors are fatal.
1194 drm_atomic_set_crtc_for_connector(struct drm_connector_state
*conn_state
,
1195 struct drm_crtc
*crtc
)
1197 struct drm_crtc_state
*crtc_state
;
1199 if (conn_state
->crtc
== crtc
)
1202 if (conn_state
->crtc
) {
1203 crtc_state
= drm_atomic_get_existing_crtc_state(conn_state
->state
,
1206 crtc_state
->connector_mask
&=
1207 ~(1 << drm_connector_index(conn_state
->connector
));
1209 drm_connector_unreference(conn_state
->connector
);
1210 conn_state
->crtc
= NULL
;
1214 crtc_state
= drm_atomic_get_crtc_state(conn_state
->state
, crtc
);
1215 if (IS_ERR(crtc_state
))
1216 return PTR_ERR(crtc_state
);
1218 crtc_state
->connector_mask
|=
1219 1 << drm_connector_index(conn_state
->connector
);
1221 drm_connector_reference(conn_state
->connector
);
1222 conn_state
->crtc
= crtc
;
1224 DRM_DEBUG_ATOMIC("Link connector state %p to [CRTC:%d:%s]\n",
1225 conn_state
, crtc
->base
.id
, crtc
->name
);
1227 DRM_DEBUG_ATOMIC("Link connector state %p to [NOCRTC]\n",
1233 EXPORT_SYMBOL(drm_atomic_set_crtc_for_connector
);
1236 * drm_atomic_add_affected_connectors - add connectors for crtc
1237 * @state: atomic state
1240 * This function walks the current configuration and adds all connectors
1241 * currently using @crtc to the atomic configuration @state. Note that this
1242 * function must acquire the connection mutex. This can potentially cause
1243 * unneeded seralization if the update is just for the planes on one crtc. Hence
1244 * drivers and helpers should only call this when really needed (e.g. when a
1245 * full modeset needs to happen due to some change).
1248 * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK
1249 * then the w/w mutex code has detected a deadlock and the entire atomic
1250 * sequence must be restarted. All other errors are fatal.
1253 drm_atomic_add_affected_connectors(struct drm_atomic_state
*state
,
1254 struct drm_crtc
*crtc
)
1256 struct drm_mode_config
*config
= &state
->dev
->mode_config
;
1257 struct drm_connector
*connector
;
1258 struct drm_connector_state
*conn_state
;
1261 ret
= drm_modeset_lock(&config
->connection_mutex
, state
->acquire_ctx
);
1265 DRM_DEBUG_ATOMIC("Adding all current connectors for [CRTC:%d:%s] to %p\n",
1266 crtc
->base
.id
, crtc
->name
, state
);
1269 * Changed connectors are already in @state, so only need to look at the
1270 * current configuration.
1272 drm_for_each_connector(connector
, state
->dev
) {
1273 if (connector
->state
->crtc
!= crtc
)
1276 conn_state
= drm_atomic_get_connector_state(state
, connector
);
1277 if (IS_ERR(conn_state
))
1278 return PTR_ERR(conn_state
);
1283 EXPORT_SYMBOL(drm_atomic_add_affected_connectors
);
1286 * drm_atomic_add_affected_planes - add planes for crtc
1287 * @state: atomic state
1290 * This function walks the current configuration and adds all planes
1291 * currently used by @crtc to the atomic configuration @state. This is useful
1292 * when an atomic commit also needs to check all currently enabled plane on
1293 * @crtc, e.g. when changing the mode. It's also useful when re-enabling a CRTC
1294 * to avoid special code to force-enable all planes.
1296 * Since acquiring a plane state will always also acquire the w/w mutex of the
1297 * current CRTC for that plane (if there is any) adding all the plane states for
1298 * a CRTC will not reduce parallism of atomic updates.
1301 * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK
1302 * then the w/w mutex code has detected a deadlock and the entire atomic
1303 * sequence must be restarted. All other errors are fatal.
1306 drm_atomic_add_affected_planes(struct drm_atomic_state
*state
,
1307 struct drm_crtc
*crtc
)
1309 struct drm_plane
*plane
;
1311 WARN_ON(!drm_atomic_get_existing_crtc_state(state
, crtc
));
1313 drm_for_each_plane_mask(plane
, state
->dev
, crtc
->state
->plane_mask
) {
1314 struct drm_plane_state
*plane_state
=
1315 drm_atomic_get_plane_state(state
, plane
);
1317 if (IS_ERR(plane_state
))
1318 return PTR_ERR(plane_state
);
1322 EXPORT_SYMBOL(drm_atomic_add_affected_planes
);
1325 * drm_atomic_legacy_backoff - locking backoff for legacy ioctls
1326 * @state: atomic state
1328 * This function should be used by legacy entry points which don't understand
1329 * -EDEADLK semantics. For simplicity this one will grab all modeset locks after
1330 * the slowpath completed.
1332 void drm_atomic_legacy_backoff(struct drm_atomic_state
*state
)
1334 struct drm_device
*dev
= state
->dev
;
1335 unsigned crtc_mask
= 0;
1336 struct drm_crtc
*crtc
;
1338 bool global
= false;
1340 drm_for_each_crtc(crtc
, dev
) {
1341 if (crtc
->acquire_ctx
!= state
->acquire_ctx
)
1344 crtc_mask
|= drm_crtc_mask(crtc
);
1345 crtc
->acquire_ctx
= NULL
;
1348 if (WARN_ON(dev
->mode_config
.acquire_ctx
== state
->acquire_ctx
)) {
1351 dev
->mode_config
.acquire_ctx
= NULL
;
1355 drm_modeset_backoff(state
->acquire_ctx
);
1357 ret
= drm_modeset_lock_all_ctx(dev
, state
->acquire_ctx
);
1361 drm_for_each_crtc(crtc
, dev
)
1362 if (drm_crtc_mask(crtc
) & crtc_mask
)
1363 crtc
->acquire_ctx
= state
->acquire_ctx
;
1366 dev
->mode_config
.acquire_ctx
= state
->acquire_ctx
;
1368 EXPORT_SYMBOL(drm_atomic_legacy_backoff
);
1371 * drm_atomic_check_only - check whether a given config would work
1372 * @state: atomic configuration to check
1374 * Note that this function can return -EDEADLK if the driver needed to acquire
1375 * more locks but encountered a deadlock. The caller must then do the usual w/w
1376 * backoff dance and restart. All other errors are fatal.
1379 * 0 on success, negative error code on failure.
1381 int drm_atomic_check_only(struct drm_atomic_state
*state
)
1383 struct drm_device
*dev
= state
->dev
;
1384 struct drm_mode_config
*config
= &dev
->mode_config
;
1385 struct drm_plane
*plane
;
1386 struct drm_plane_state
*plane_state
;
1387 struct drm_crtc
*crtc
;
1388 struct drm_crtc_state
*crtc_state
;
1391 DRM_DEBUG_ATOMIC("checking %p\n", state
);
1393 for_each_plane_in_state(state
, plane
, plane_state
, i
) {
1394 ret
= drm_atomic_plane_check(plane
, plane_state
);
1396 DRM_DEBUG_ATOMIC("[PLANE:%d:%s] atomic core check failed\n",
1397 plane
->base
.id
, plane
->name
);
1402 for_each_crtc_in_state(state
, crtc
, crtc_state
, i
) {
1403 ret
= drm_atomic_crtc_check(crtc
, crtc_state
);
1405 DRM_DEBUG_ATOMIC("[CRTC:%d:%s] atomic core check failed\n",
1406 crtc
->base
.id
, crtc
->name
);
1411 if (config
->funcs
->atomic_check
)
1412 ret
= config
->funcs
->atomic_check(state
->dev
, state
);
1414 if (!state
->allow_modeset
) {
1415 for_each_crtc_in_state(state
, crtc
, crtc_state
, i
) {
1416 if (drm_atomic_crtc_needs_modeset(crtc_state
)) {
1417 DRM_DEBUG_ATOMIC("[CRTC:%d:%s] requires full modeset\n",
1418 crtc
->base
.id
, crtc
->name
);
1426 EXPORT_SYMBOL(drm_atomic_check_only
);
1429 * drm_atomic_commit - commit configuration atomically
1430 * @state: atomic configuration to check
1432 * Note that this function can return -EDEADLK if the driver needed to acquire
1433 * more locks but encountered a deadlock. The caller must then do the usual w/w
1434 * backoff dance and restart. All other errors are fatal.
1436 * Also note that on successful execution ownership of @state is transferred
1437 * from the caller of this function to the function itself. The caller must not
1438 * free or in any other way access @state. If the function fails then the caller
1439 * must clean up @state itself.
1442 * 0 on success, negative error code on failure.
1444 int drm_atomic_commit(struct drm_atomic_state
*state
)
1446 struct drm_mode_config
*config
= &state
->dev
->mode_config
;
1449 ret
= drm_atomic_check_only(state
);
1453 DRM_DEBUG_ATOMIC("commiting %p\n", state
);
1455 return config
->funcs
->atomic_commit(state
->dev
, state
, false);
1457 EXPORT_SYMBOL(drm_atomic_commit
);
1460 * drm_atomic_nonblocking_commit - atomic&nonblocking configuration commit
1461 * @state: atomic configuration to check
1463 * Note that this function can return -EDEADLK if the driver needed to acquire
1464 * more locks but encountered a deadlock. The caller must then do the usual w/w
1465 * backoff dance and restart. All other errors are fatal.
1467 * Also note that on successful execution ownership of @state is transferred
1468 * from the caller of this function to the function itself. The caller must not
1469 * free or in any other way access @state. If the function fails then the caller
1470 * must clean up @state itself.
1473 * 0 on success, negative error code on failure.
1475 int drm_atomic_nonblocking_commit(struct drm_atomic_state
*state
)
1477 struct drm_mode_config
*config
= &state
->dev
->mode_config
;
1480 ret
= drm_atomic_check_only(state
);
1484 DRM_DEBUG_ATOMIC("commiting %p nonblocking\n", state
);
1486 return config
->funcs
->atomic_commit(state
->dev
, state
, true);
1488 EXPORT_SYMBOL(drm_atomic_nonblocking_commit
);
1491 * The big monstor ioctl
1494 static struct drm_pending_vblank_event
*create_vblank_event(
1495 struct drm_device
*dev
, struct drm_file
*file_priv
,
1496 struct dma_fence
*fence
, uint64_t user_data
)
1498 struct drm_pending_vblank_event
*e
= NULL
;
1501 e
= kzalloc(sizeof *e
, GFP_KERNEL
);
1505 e
->event
.base
.type
= DRM_EVENT_FLIP_COMPLETE
;
1506 e
->event
.base
.length
= sizeof(e
->event
);
1507 e
->event
.user_data
= user_data
;
1510 ret
= drm_event_reserve_init(dev
, file_priv
, &e
->base
,
1518 e
->base
.fence
= fence
;
1523 static int atomic_set_prop(struct drm_atomic_state
*state
,
1524 struct drm_mode_object
*obj
, struct drm_property
*prop
,
1525 uint64_t prop_value
)
1527 struct drm_mode_object
*ref
;
1530 if (!drm_property_change_valid_get(prop
, prop_value
, &ref
))
1533 switch (obj
->type
) {
1534 case DRM_MODE_OBJECT_CONNECTOR
: {
1535 struct drm_connector
*connector
= obj_to_connector(obj
);
1536 struct drm_connector_state
*connector_state
;
1538 connector_state
= drm_atomic_get_connector_state(state
, connector
);
1539 if (IS_ERR(connector_state
)) {
1540 ret
= PTR_ERR(connector_state
);
1544 ret
= drm_atomic_connector_set_property(connector
,
1545 connector_state
, prop
, prop_value
);
1548 case DRM_MODE_OBJECT_CRTC
: {
1549 struct drm_crtc
*crtc
= obj_to_crtc(obj
);
1550 struct drm_crtc_state
*crtc_state
;
1552 crtc_state
= drm_atomic_get_crtc_state(state
, crtc
);
1553 if (IS_ERR(crtc_state
)) {
1554 ret
= PTR_ERR(crtc_state
);
1558 ret
= drm_atomic_crtc_set_property(crtc
,
1559 crtc_state
, prop
, prop_value
);
1562 case DRM_MODE_OBJECT_PLANE
: {
1563 struct drm_plane
*plane
= obj_to_plane(obj
);
1564 struct drm_plane_state
*plane_state
;
1566 plane_state
= drm_atomic_get_plane_state(state
, plane
);
1567 if (IS_ERR(plane_state
)) {
1568 ret
= PTR_ERR(plane_state
);
1572 ret
= drm_atomic_plane_set_property(plane
,
1573 plane_state
, prop
, prop_value
);
1581 drm_property_change_valid_put(prop
, ref
);
1586 * drm_atomic_clean_old_fb -- Unset old_fb pointers and set plane->fb pointers.
1588 * @dev: drm device to check.
1589 * @plane_mask: plane mask for planes that were updated.
1590 * @ret: return value, can be -EDEADLK for a retry.
1592 * Before doing an update plane->old_fb is set to plane->fb,
1593 * but before dropping the locks old_fb needs to be set to NULL
1594 * and plane->fb updated. This is a common operation for each
1595 * atomic update, so this call is split off as a helper.
1597 void drm_atomic_clean_old_fb(struct drm_device
*dev
,
1598 unsigned plane_mask
,
1601 struct drm_plane
*plane
;
1603 /* if succeeded, fixup legacy plane crtc/fb ptrs before dropping
1604 * locks (ie. while it is still safe to deref plane->state). We
1605 * need to do this here because the driver entry points cannot
1606 * distinguish between legacy and atomic ioctls.
1608 drm_for_each_plane_mask(plane
, dev
, plane_mask
) {
1610 struct drm_framebuffer
*new_fb
= plane
->state
->fb
;
1612 drm_framebuffer_reference(new_fb
);
1614 plane
->crtc
= plane
->state
->crtc
;
1617 drm_framebuffer_unreference(plane
->old_fb
);
1619 plane
->old_fb
= NULL
;
1622 EXPORT_SYMBOL(drm_atomic_clean_old_fb
);
1624 int drm_mode_atomic_ioctl(struct drm_device
*dev
,
1625 void *data
, struct drm_file
*file_priv
)
1627 struct drm_mode_atomic
*arg
= data
;
1628 uint32_t __user
*objs_ptr
= (uint32_t __user
*)(unsigned long)(arg
->objs_ptr
);
1629 uint32_t __user
*count_props_ptr
= (uint32_t __user
*)(unsigned long)(arg
->count_props_ptr
);
1630 uint32_t __user
*props_ptr
= (uint32_t __user
*)(unsigned long)(arg
->props_ptr
);
1631 uint64_t __user
*prop_values_ptr
= (uint64_t __user
*)(unsigned long)(arg
->prop_values_ptr
);
1632 unsigned int copied_objs
, copied_props
;
1633 struct drm_atomic_state
*state
;
1634 struct drm_modeset_acquire_ctx ctx
;
1635 struct drm_plane
*plane
;
1636 struct drm_crtc
*crtc
;
1637 struct drm_crtc_state
*crtc_state
;
1638 unsigned plane_mask
;
1642 /* disallow for drivers not supporting atomic: */
1643 if (!drm_core_check_feature(dev
, DRIVER_ATOMIC
))
1646 /* disallow for userspace that has not enabled atomic cap (even
1647 * though this may be a bit overkill, since legacy userspace
1648 * wouldn't know how to call this ioctl)
1650 if (!file_priv
->atomic
)
1653 if (arg
->flags
& ~DRM_MODE_ATOMIC_FLAGS
)
1659 if ((arg
->flags
& DRM_MODE_PAGE_FLIP_ASYNC
) &&
1660 !dev
->mode_config
.async_page_flip
)
1663 /* can't test and expect an event at the same time. */
1664 if ((arg
->flags
& DRM_MODE_ATOMIC_TEST_ONLY
) &&
1665 (arg
->flags
& DRM_MODE_PAGE_FLIP_EVENT
))
1668 drm_modeset_acquire_init(&ctx
, 0);
1670 state
= drm_atomic_state_alloc(dev
);
1674 state
->acquire_ctx
= &ctx
;
1675 state
->allow_modeset
= !!(arg
->flags
& DRM_MODE_ATOMIC_ALLOW_MODESET
);
1682 for (i
= 0; i
< arg
->count_objs
; i
++) {
1683 uint32_t obj_id
, count_props
;
1684 struct drm_mode_object
*obj
;
1686 if (get_user(obj_id
, objs_ptr
+ copied_objs
)) {
1691 obj
= drm_mode_object_find(dev
, obj_id
, DRM_MODE_OBJECT_ANY
);
1697 if (!obj
->properties
) {
1698 drm_mode_object_unreference(obj
);
1703 if (get_user(count_props
, count_props_ptr
+ copied_objs
)) {
1704 drm_mode_object_unreference(obj
);
1711 for (j
= 0; j
< count_props
; j
++) {
1713 uint64_t prop_value
;
1714 struct drm_property
*prop
;
1716 if (get_user(prop_id
, props_ptr
+ copied_props
)) {
1717 drm_mode_object_unreference(obj
);
1722 prop
= drm_mode_obj_find_prop_id(obj
, prop_id
);
1724 drm_mode_object_unreference(obj
);
1729 if (copy_from_user(&prop_value
,
1730 prop_values_ptr
+ copied_props
,
1731 sizeof(prop_value
))) {
1732 drm_mode_object_unreference(obj
);
1737 ret
= atomic_set_prop(state
, obj
, prop
, prop_value
);
1739 drm_mode_object_unreference(obj
);
1746 if (obj
->type
== DRM_MODE_OBJECT_PLANE
&& count_props
&&
1747 !(arg
->flags
& DRM_MODE_ATOMIC_TEST_ONLY
)) {
1748 plane
= obj_to_plane(obj
);
1749 plane_mask
|= (1 << drm_plane_index(plane
));
1750 plane
->old_fb
= plane
->fb
;
1752 drm_mode_object_unreference(obj
);
1755 if (arg
->flags
& DRM_MODE_PAGE_FLIP_EVENT
) {
1756 for_each_crtc_in_state(state
, crtc
, crtc_state
, i
) {
1757 struct drm_pending_vblank_event
*e
;
1759 e
= create_vblank_event(dev
, file_priv
, NULL
,
1766 crtc_state
->event
= e
;
1770 if (arg
->flags
& DRM_MODE_ATOMIC_TEST_ONLY
) {
1772 * Unlike commit, check_only does not clean up state.
1773 * Below we call drm_atomic_state_put for it.
1775 ret
= drm_atomic_check_only(state
);
1776 } else if (arg
->flags
& DRM_MODE_ATOMIC_NONBLOCK
) {
1777 ret
= drm_atomic_nonblocking_commit(state
);
1779 ret
= drm_atomic_commit(state
);
1783 drm_atomic_clean_old_fb(dev
, plane_mask
, ret
);
1785 if (ret
&& arg
->flags
& DRM_MODE_PAGE_FLIP_EVENT
) {
1787 * TEST_ONLY and PAGE_FLIP_EVENT are mutually exclusive,
1788 * if they weren't, this code should be called on success
1789 * for TEST_ONLY too.
1792 for_each_crtc_in_state(state
, crtc
, crtc_state
, i
) {
1793 if (!crtc_state
->event
)
1796 drm_event_cancel_free(dev
, &crtc_state
->event
->base
);
1800 if (ret
== -EDEADLK
) {
1801 drm_atomic_state_clear(state
);
1802 drm_modeset_backoff(&ctx
);
1806 drm_atomic_state_put(state
);
1808 drm_modeset_drop_locks(&ctx
);
1809 drm_modeset_acquire_fini(&ctx
);