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_print.h>
33 #include <linux/sync_file.h>
35 #include "drm_crtc_internal.h"
37 void __drm_crtc_commit_free(struct kref
*kref
)
39 struct drm_crtc_commit
*commit
=
40 container_of(kref
, struct drm_crtc_commit
, ref
);
44 EXPORT_SYMBOL(__drm_crtc_commit_free
);
47 * drm_atomic_state_default_release -
48 * release memory initialized by drm_atomic_state_init
49 * @state: atomic state
51 * Free all the memory allocated by drm_atomic_state_init.
52 * This is useful for drivers that subclass the atomic state.
54 void drm_atomic_state_default_release(struct drm_atomic_state
*state
)
56 kfree(state
->connectors
);
59 kfree(state
->private_objs
);
61 EXPORT_SYMBOL(drm_atomic_state_default_release
);
64 * drm_atomic_state_init - init new atomic state
66 * @state: atomic state
68 * Default implementation for filling in a new atomic state.
69 * This is useful for drivers that subclass the atomic state.
72 drm_atomic_state_init(struct drm_device
*dev
, struct drm_atomic_state
*state
)
74 kref_init(&state
->ref
);
76 /* TODO legacy paths should maybe do a better job about
77 * setting this appropriately?
79 state
->allow_modeset
= true;
81 state
->crtcs
= kcalloc(dev
->mode_config
.num_crtc
,
82 sizeof(*state
->crtcs
), GFP_KERNEL
);
85 state
->planes
= kcalloc(dev
->mode_config
.num_total_plane
,
86 sizeof(*state
->planes
), GFP_KERNEL
);
92 DRM_DEBUG_ATOMIC("Allocated atomic state %p\n", state
);
96 drm_atomic_state_default_release(state
);
99 EXPORT_SYMBOL(drm_atomic_state_init
);
102 * drm_atomic_state_alloc - allocate atomic state
105 * This allocates an empty atomic state to track updates.
107 struct drm_atomic_state
*
108 drm_atomic_state_alloc(struct drm_device
*dev
)
110 struct drm_mode_config
*config
= &dev
->mode_config
;
112 if (!config
->funcs
->atomic_state_alloc
) {
113 struct drm_atomic_state
*state
;
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_put(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 for (i
= 0; i
< state
->num_private_objs
; i
++) {
190 struct drm_private_obj
*obj
= state
->private_objs
[i
].ptr
;
195 obj
->funcs
->atomic_destroy_state(obj
,
196 state
->private_objs
[i
].state
);
197 state
->private_objs
[i
].ptr
= NULL
;
198 state
->private_objs
[i
].state
= NULL
;
200 state
->num_private_objs
= 0;
203 EXPORT_SYMBOL(drm_atomic_state_default_clear
);
206 * drm_atomic_state_clear - clear state object
207 * @state: atomic state
209 * When the w/w mutex algorithm detects a deadlock we need to back off and drop
210 * all locks. So someone else could sneak in and change the current modeset
211 * configuration. Which means that all the state assembled in @state is no
212 * longer an atomic update to the current state, but to some arbitrary earlier
213 * state. Which could break assumptions the driver's
214 * &drm_mode_config_funcs.atomic_check likely relies on.
216 * Hence we must clear all cached state and completely start over, using this
219 void drm_atomic_state_clear(struct drm_atomic_state
*state
)
221 struct drm_device
*dev
= state
->dev
;
222 struct drm_mode_config
*config
= &dev
->mode_config
;
224 if (config
->funcs
->atomic_state_clear
)
225 config
->funcs
->atomic_state_clear(state
);
227 drm_atomic_state_default_clear(state
);
229 EXPORT_SYMBOL(drm_atomic_state_clear
);
232 * __drm_atomic_state_free - free all memory for an atomic state
233 * @ref: This atomic state to deallocate
235 * This frees all memory associated with an atomic state, including all the
236 * per-object state for planes, crtcs and connectors.
238 void __drm_atomic_state_free(struct kref
*ref
)
240 struct drm_atomic_state
*state
= container_of(ref
, typeof(*state
), ref
);
241 struct drm_mode_config
*config
= &state
->dev
->mode_config
;
243 drm_atomic_state_clear(state
);
245 DRM_DEBUG_ATOMIC("Freeing atomic state %p\n", state
);
247 if (config
->funcs
->atomic_state_free
) {
248 config
->funcs
->atomic_state_free(state
);
250 drm_atomic_state_default_release(state
);
254 EXPORT_SYMBOL(__drm_atomic_state_free
);
257 * drm_atomic_get_crtc_state - get crtc state
258 * @state: global atomic state object
259 * @crtc: crtc to get state object for
261 * This function returns the crtc state for the given crtc, allocating it if
262 * needed. It will also grab the relevant crtc lock to make sure that the state
267 * Either the allocated state or the error code encoded into the pointer. When
268 * the error is EDEADLK then the w/w mutex code has detected a deadlock and the
269 * entire atomic sequence must be restarted. All other errors are fatal.
271 struct drm_crtc_state
*
272 drm_atomic_get_crtc_state(struct drm_atomic_state
*state
,
273 struct drm_crtc
*crtc
)
275 int ret
, index
= drm_crtc_index(crtc
);
276 struct drm_crtc_state
*crtc_state
;
278 WARN_ON(!state
->acquire_ctx
);
280 crtc_state
= drm_atomic_get_existing_crtc_state(state
, crtc
);
284 ret
= drm_modeset_lock(&crtc
->mutex
, state
->acquire_ctx
);
288 crtc_state
= crtc
->funcs
->atomic_duplicate_state(crtc
);
290 return ERR_PTR(-ENOMEM
);
292 state
->crtcs
[index
].state
= crtc_state
;
293 state
->crtcs
[index
].old_state
= crtc
->state
;
294 state
->crtcs
[index
].new_state
= crtc_state
;
295 state
->crtcs
[index
].ptr
= crtc
;
296 crtc_state
->state
= state
;
298 DRM_DEBUG_ATOMIC("Added [CRTC:%d:%s] %p state to %p\n",
299 crtc
->base
.id
, crtc
->name
, crtc_state
, state
);
303 EXPORT_SYMBOL(drm_atomic_get_crtc_state
);
305 static void set_out_fence_for_crtc(struct drm_atomic_state
*state
,
306 struct drm_crtc
*crtc
, s32 __user
*fence_ptr
)
308 state
->crtcs
[drm_crtc_index(crtc
)].out_fence_ptr
= fence_ptr
;
311 static s32 __user
*get_out_fence_for_crtc(struct drm_atomic_state
*state
,
312 struct drm_crtc
*crtc
)
314 s32 __user
*fence_ptr
;
316 fence_ptr
= state
->crtcs
[drm_crtc_index(crtc
)].out_fence_ptr
;
317 state
->crtcs
[drm_crtc_index(crtc
)].out_fence_ptr
= NULL
;
323 * drm_atomic_set_mode_for_crtc - set mode for CRTC
324 * @state: the CRTC whose incoming state to update
325 * @mode: kernel-internal mode to use for the CRTC, or NULL to disable
327 * Set a mode (originating from the kernel) on the desired CRTC state and update
328 * the enable property.
331 * Zero on success, error code on failure. Cannot return -EDEADLK.
333 int drm_atomic_set_mode_for_crtc(struct drm_crtc_state
*state
,
334 const struct drm_display_mode
*mode
)
336 struct drm_mode_modeinfo umode
;
338 /* Early return for no change. */
339 if (mode
&& memcmp(&state
->mode
, mode
, sizeof(*mode
)) == 0)
342 drm_property_blob_put(state
->mode_blob
);
343 state
->mode_blob
= NULL
;
346 drm_mode_convert_to_umode(&umode
, mode
);
348 drm_property_create_blob(state
->crtc
->dev
,
351 if (IS_ERR(state
->mode_blob
))
352 return PTR_ERR(state
->mode_blob
);
354 drm_mode_copy(&state
->mode
, mode
);
355 state
->enable
= true;
356 DRM_DEBUG_ATOMIC("Set [MODE:%s] for CRTC state %p\n",
359 memset(&state
->mode
, 0, sizeof(state
->mode
));
360 state
->enable
= false;
361 DRM_DEBUG_ATOMIC("Set [NOMODE] for CRTC state %p\n",
367 EXPORT_SYMBOL(drm_atomic_set_mode_for_crtc
);
370 * drm_atomic_set_mode_prop_for_crtc - set mode for CRTC
371 * @state: the CRTC whose incoming state to update
372 * @blob: pointer to blob property to use for mode
374 * Set a mode (originating from a blob property) on the desired CRTC state.
375 * This function will take a reference on the blob property for the CRTC state,
376 * and release the reference held on the state's existing mode property, if any
380 * Zero on success, error code on failure. Cannot return -EDEADLK.
382 int drm_atomic_set_mode_prop_for_crtc(struct drm_crtc_state
*state
,
383 struct drm_property_blob
*blob
)
385 if (blob
== state
->mode_blob
)
388 drm_property_blob_put(state
->mode_blob
);
389 state
->mode_blob
= NULL
;
391 memset(&state
->mode
, 0, sizeof(state
->mode
));
394 if (blob
->length
!= sizeof(struct drm_mode_modeinfo
) ||
395 drm_mode_convert_umode(&state
->mode
,
396 (const struct drm_mode_modeinfo
*)
400 state
->mode_blob
= drm_property_blob_get(blob
);
401 state
->enable
= true;
402 DRM_DEBUG_ATOMIC("Set [MODE:%s] for CRTC state %p\n",
403 state
->mode
.name
, state
);
405 state
->enable
= false;
406 DRM_DEBUG_ATOMIC("Set [NOMODE] for CRTC state %p\n",
412 EXPORT_SYMBOL(drm_atomic_set_mode_prop_for_crtc
);
415 drm_atomic_replace_property_blob_from_id(struct drm_device
*dev
,
416 struct drm_property_blob
**blob
,
418 ssize_t expected_size
,
421 struct drm_property_blob
*new_blob
= NULL
;
424 new_blob
= drm_property_lookup_blob(dev
, blob_id
);
425 if (new_blob
== NULL
)
428 if (expected_size
> 0 && expected_size
!= new_blob
->length
) {
429 drm_property_blob_put(new_blob
);
434 *replaced
|= drm_property_replace_blob(blob
, new_blob
);
435 drm_property_blob_put(new_blob
);
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 * This function handles generic/core properties and calls out to driver's
448 * &drm_crtc_funcs.atomic_set_property for driver properties. To ensure
449 * consistent behavior you must call this function rather than the driver hook
453 * Zero on success, error code on failure
455 int drm_atomic_crtc_set_property(struct drm_crtc
*crtc
,
456 struct drm_crtc_state
*state
, struct drm_property
*property
,
459 struct drm_device
*dev
= crtc
->dev
;
460 struct drm_mode_config
*config
= &dev
->mode_config
;
461 bool replaced
= false;
464 if (property
== config
->prop_active
)
466 else if (property
== config
->prop_mode_id
) {
467 struct drm_property_blob
*mode
=
468 drm_property_lookup_blob(dev
, val
);
469 ret
= drm_atomic_set_mode_prop_for_crtc(state
, mode
);
470 drm_property_blob_put(mode
);
472 } else if (property
== config
->degamma_lut_property
) {
473 ret
= drm_atomic_replace_property_blob_from_id(dev
,
478 state
->color_mgmt_changed
|= replaced
;
480 } else if (property
== config
->ctm_property
) {
481 ret
= drm_atomic_replace_property_blob_from_id(dev
,
484 sizeof(struct drm_color_ctm
),
486 state
->color_mgmt_changed
|= replaced
;
488 } else if (property
== config
->gamma_lut_property
) {
489 ret
= drm_atomic_replace_property_blob_from_id(dev
,
494 state
->color_mgmt_changed
|= replaced
;
496 } else if (property
== config
->prop_out_fence_ptr
) {
497 s32 __user
*fence_ptr
= u64_to_user_ptr(val
);
502 if (put_user(-1, fence_ptr
))
505 set_out_fence_for_crtc(state
->state
, crtc
, fence_ptr
);
506 } else if (crtc
->funcs
->atomic_set_property
)
507 return crtc
->funcs
->atomic_set_property(crtc
, state
, property
, val
);
513 EXPORT_SYMBOL(drm_atomic_crtc_set_property
);
516 * drm_atomic_crtc_get_property - get property value from CRTC state
517 * @crtc: the drm CRTC to set a property on
518 * @state: the state object to get the property value from
519 * @property: the property to set
520 * @val: return location for the property value
522 * This function handles generic/core properties and calls out to driver's
523 * &drm_crtc_funcs.atomic_get_property for driver properties. To ensure
524 * consistent behavior you must call this function rather than the driver hook
528 * Zero on success, error code on failure
531 drm_atomic_crtc_get_property(struct drm_crtc
*crtc
,
532 const struct drm_crtc_state
*state
,
533 struct drm_property
*property
, uint64_t *val
)
535 struct drm_device
*dev
= crtc
->dev
;
536 struct drm_mode_config
*config
= &dev
->mode_config
;
538 if (property
== config
->prop_active
)
539 *val
= state
->active
;
540 else if (property
== config
->prop_mode_id
)
541 *val
= (state
->mode_blob
) ? state
->mode_blob
->base
.id
: 0;
542 else if (property
== config
->degamma_lut_property
)
543 *val
= (state
->degamma_lut
) ? state
->degamma_lut
->base
.id
: 0;
544 else if (property
== config
->ctm_property
)
545 *val
= (state
->ctm
) ? state
->ctm
->base
.id
: 0;
546 else if (property
== config
->gamma_lut_property
)
547 *val
= (state
->gamma_lut
) ? state
->gamma_lut
->base
.id
: 0;
548 else if (property
== config
->prop_out_fence_ptr
)
550 else if (crtc
->funcs
->atomic_get_property
)
551 return crtc
->funcs
->atomic_get_property(crtc
, state
, property
, val
);
559 * drm_atomic_crtc_check - check crtc state
560 * @crtc: crtc to check
561 * @state: crtc state to check
563 * Provides core sanity checks for crtc state.
566 * Zero on success, error code on failure
568 static int drm_atomic_crtc_check(struct drm_crtc
*crtc
,
569 struct drm_crtc_state
*state
)
571 /* NOTE: we explicitly don't enforce constraints such as primary
572 * layer covering entire screen, since that is something we want
573 * to allow (on hw that supports it). For hw that does not, it
574 * should be checked in driver's crtc->atomic_check() vfunc.
576 * TODO: Add generic modeset state checks once we support those.
579 if (state
->active
&& !state
->enable
) {
580 DRM_DEBUG_ATOMIC("[CRTC:%d:%s] active without enabled\n",
581 crtc
->base
.id
, crtc
->name
);
585 /* The state->enable vs. state->mode_blob checks can be WARN_ON,
586 * as this is a kernel-internal detail that userspace should never
587 * be able to trigger. */
588 if (drm_core_check_feature(crtc
->dev
, DRIVER_ATOMIC
) &&
589 WARN_ON(state
->enable
&& !state
->mode_blob
)) {
590 DRM_DEBUG_ATOMIC("[CRTC:%d:%s] enabled without mode blob\n",
591 crtc
->base
.id
, crtc
->name
);
595 if (drm_core_check_feature(crtc
->dev
, DRIVER_ATOMIC
) &&
596 WARN_ON(!state
->enable
&& state
->mode_blob
)) {
597 DRM_DEBUG_ATOMIC("[CRTC:%d:%s] disabled with mode blob\n",
598 crtc
->base
.id
, crtc
->name
);
603 * Reject event generation for when a CRTC is off and stays off.
604 * It wouldn't be hard to implement this, but userspace has a track
605 * record of happily burning through 100% cpu (or worse, crash) when the
606 * display pipe is suspended. To avoid all that fun just reject updates
607 * that ask for events since likely that indicates a bug in the
608 * compositor's drawing loop. This is consistent with the vblank IOCTL
609 * and legacy page_flip IOCTL which also reject service on a disabled
612 if (state
->event
&& !state
->active
&& !crtc
->state
->active
) {
613 DRM_DEBUG_ATOMIC("[CRTC:%d:%s] requesting event but off\n",
614 crtc
->base
.id
, crtc
->name
);
621 static void drm_atomic_crtc_print_state(struct drm_printer
*p
,
622 const struct drm_crtc_state
*state
)
624 struct drm_crtc
*crtc
= state
->crtc
;
626 drm_printf(p
, "crtc[%u]: %s\n", crtc
->base
.id
, crtc
->name
);
627 drm_printf(p
, "\tenable=%d\n", state
->enable
);
628 drm_printf(p
, "\tactive=%d\n", state
->active
);
629 drm_printf(p
, "\tplanes_changed=%d\n", state
->planes_changed
);
630 drm_printf(p
, "\tmode_changed=%d\n", state
->mode_changed
);
631 drm_printf(p
, "\tactive_changed=%d\n", state
->active_changed
);
632 drm_printf(p
, "\tconnectors_changed=%d\n", state
->connectors_changed
);
633 drm_printf(p
, "\tcolor_mgmt_changed=%d\n", state
->color_mgmt_changed
);
634 drm_printf(p
, "\tplane_mask=%x\n", state
->plane_mask
);
635 drm_printf(p
, "\tconnector_mask=%x\n", state
->connector_mask
);
636 drm_printf(p
, "\tencoder_mask=%x\n", state
->encoder_mask
);
637 drm_printf(p
, "\tmode: " DRM_MODE_FMT
"\n", DRM_MODE_ARG(&state
->mode
));
639 if (crtc
->funcs
->atomic_print_state
)
640 crtc
->funcs
->atomic_print_state(p
, state
);
644 * drm_atomic_get_plane_state - get plane state
645 * @state: global atomic state object
646 * @plane: plane to get state object for
648 * This function returns the plane state for the given plane, allocating it if
649 * needed. It will also grab the relevant plane lock to make sure that the state
654 * Either the allocated state or the error code encoded into the pointer. When
655 * the error is EDEADLK then the w/w mutex code has detected a deadlock and the
656 * entire atomic sequence must be restarted. All other errors are fatal.
658 struct drm_plane_state
*
659 drm_atomic_get_plane_state(struct drm_atomic_state
*state
,
660 struct drm_plane
*plane
)
662 int ret
, index
= drm_plane_index(plane
);
663 struct drm_plane_state
*plane_state
;
665 WARN_ON(!state
->acquire_ctx
);
667 plane_state
= drm_atomic_get_existing_plane_state(state
, plane
);
671 ret
= drm_modeset_lock(&plane
->mutex
, state
->acquire_ctx
);
675 plane_state
= plane
->funcs
->atomic_duplicate_state(plane
);
677 return ERR_PTR(-ENOMEM
);
679 state
->planes
[index
].state
= plane_state
;
680 state
->planes
[index
].ptr
= plane
;
681 state
->planes
[index
].old_state
= plane
->state
;
682 state
->planes
[index
].new_state
= plane_state
;
683 plane_state
->state
= state
;
685 DRM_DEBUG_ATOMIC("Added [PLANE:%d:%s] %p state to %p\n",
686 plane
->base
.id
, plane
->name
, plane_state
, state
);
688 if (plane_state
->crtc
) {
689 struct drm_crtc_state
*crtc_state
;
691 crtc_state
= drm_atomic_get_crtc_state(state
,
693 if (IS_ERR(crtc_state
))
694 return ERR_CAST(crtc_state
);
699 EXPORT_SYMBOL(drm_atomic_get_plane_state
);
702 * drm_atomic_plane_set_property - set property on plane
703 * @plane: the drm plane to set a property on
704 * @state: the state object to update with the new property value
705 * @property: the property to set
706 * @val: the new property value
708 * This function handles generic/core properties and calls out to driver's
709 * &drm_plane_funcs.atomic_set_property for driver properties. To ensure
710 * consistent behavior you must call this function rather than the driver hook
714 * Zero on success, error code on failure
716 static int drm_atomic_plane_set_property(struct drm_plane
*plane
,
717 struct drm_plane_state
*state
, struct drm_property
*property
,
720 struct drm_device
*dev
= plane
->dev
;
721 struct drm_mode_config
*config
= &dev
->mode_config
;
723 if (property
== config
->prop_fb_id
) {
724 struct drm_framebuffer
*fb
= drm_framebuffer_lookup(dev
, val
);
725 drm_atomic_set_fb_for_plane(state
, fb
);
727 drm_framebuffer_put(fb
);
728 } else if (property
== config
->prop_in_fence_fd
) {
732 if (U642I64(val
) == -1)
735 state
->fence
= sync_file_get_fence(val
);
739 } else if (property
== config
->prop_crtc_id
) {
740 struct drm_crtc
*crtc
= drm_crtc_find(dev
, val
);
741 return drm_atomic_set_crtc_for_plane(state
, crtc
);
742 } else if (property
== config
->prop_crtc_x
) {
743 state
->crtc_x
= U642I64(val
);
744 } else if (property
== config
->prop_crtc_y
) {
745 state
->crtc_y
= U642I64(val
);
746 } else if (property
== config
->prop_crtc_w
) {
748 } else if (property
== config
->prop_crtc_h
) {
750 } else if (property
== config
->prop_src_x
) {
752 } else if (property
== config
->prop_src_y
) {
754 } else if (property
== config
->prop_src_w
) {
756 } else if (property
== config
->prop_src_h
) {
758 } else if (property
== plane
->rotation_property
) {
759 if (!is_power_of_2(val
& DRM_MODE_ROTATE_MASK
))
761 state
->rotation
= val
;
762 } else if (property
== plane
->zpos_property
) {
764 } else if (plane
->funcs
->atomic_set_property
) {
765 return plane
->funcs
->atomic_set_property(plane
, state
,
775 * drm_atomic_plane_get_property - get property value from plane state
776 * @plane: the drm plane to set a property on
777 * @state: the state object to get the property value from
778 * @property: the property to set
779 * @val: return location for the property value
781 * This function handles generic/core properties and calls out to driver's
782 * &drm_plane_funcs.atomic_get_property for driver properties. To ensure
783 * consistent behavior you must call this function rather than the driver hook
787 * Zero on success, error code on failure
790 drm_atomic_plane_get_property(struct drm_plane
*plane
,
791 const struct drm_plane_state
*state
,
792 struct drm_property
*property
, uint64_t *val
)
794 struct drm_device
*dev
= plane
->dev
;
795 struct drm_mode_config
*config
= &dev
->mode_config
;
797 if (property
== config
->prop_fb_id
) {
798 *val
= (state
->fb
) ? state
->fb
->base
.id
: 0;
799 } else if (property
== config
->prop_in_fence_fd
) {
801 } else if (property
== config
->prop_crtc_id
) {
802 *val
= (state
->crtc
) ? state
->crtc
->base
.id
: 0;
803 } else if (property
== config
->prop_crtc_x
) {
804 *val
= I642U64(state
->crtc_x
);
805 } else if (property
== config
->prop_crtc_y
) {
806 *val
= I642U64(state
->crtc_y
);
807 } else if (property
== config
->prop_crtc_w
) {
808 *val
= state
->crtc_w
;
809 } else if (property
== config
->prop_crtc_h
) {
810 *val
= state
->crtc_h
;
811 } else if (property
== config
->prop_src_x
) {
813 } else if (property
== config
->prop_src_y
) {
815 } else if (property
== config
->prop_src_w
) {
817 } else if (property
== config
->prop_src_h
) {
819 } else if (property
== plane
->rotation_property
) {
820 *val
= state
->rotation
;
821 } else if (property
== plane
->zpos_property
) {
823 } else if (plane
->funcs
->atomic_get_property
) {
824 return plane
->funcs
->atomic_get_property(plane
, state
, property
, val
);
833 plane_switching_crtc(struct drm_atomic_state
*state
,
834 struct drm_plane
*plane
,
835 struct drm_plane_state
*plane_state
)
837 if (!plane
->state
->crtc
|| !plane_state
->crtc
)
840 if (plane
->state
->crtc
== plane_state
->crtc
)
843 /* This could be refined, but currently there's no helper or driver code
844 * to implement direct switching of active planes nor userspace to take
845 * advantage of more direct plane switching without the intermediate
852 * drm_atomic_plane_check - check plane state
853 * @plane: plane to check
854 * @state: plane state to check
856 * Provides core sanity checks for plane state.
859 * Zero on success, error code on failure
861 static int drm_atomic_plane_check(struct drm_plane
*plane
,
862 struct drm_plane_state
*state
)
864 unsigned int fb_width
, fb_height
;
867 /* either *both* CRTC and FB must be set, or neither */
868 if (WARN_ON(state
->crtc
&& !state
->fb
)) {
869 DRM_DEBUG_ATOMIC("CRTC set but no FB\n");
871 } else if (WARN_ON(state
->fb
&& !state
->crtc
)) {
872 DRM_DEBUG_ATOMIC("FB set but no CRTC\n");
876 /* if disabled, we don't care about the rest of the state: */
880 /* Check whether this plane is usable on this CRTC */
881 if (!(plane
->possible_crtcs
& drm_crtc_mask(state
->crtc
))) {
882 DRM_DEBUG_ATOMIC("Invalid crtc for plane\n");
886 /* Check whether this plane supports the fb pixel format. */
887 ret
= drm_plane_check_pixel_format(plane
, state
->fb
->format
->format
);
889 struct drm_format_name_buf format_name
;
890 DRM_DEBUG_ATOMIC("Invalid pixel format %s\n",
891 drm_get_format_name(state
->fb
->format
->format
,
896 /* Give drivers some help against integer overflows */
897 if (state
->crtc_w
> INT_MAX
||
898 state
->crtc_x
> INT_MAX
- (int32_t) state
->crtc_w
||
899 state
->crtc_h
> INT_MAX
||
900 state
->crtc_y
> INT_MAX
- (int32_t) state
->crtc_h
) {
901 DRM_DEBUG_ATOMIC("Invalid CRTC coordinates %ux%u+%d+%d\n",
902 state
->crtc_w
, state
->crtc_h
,
903 state
->crtc_x
, state
->crtc_y
);
907 fb_width
= state
->fb
->width
<< 16;
908 fb_height
= state
->fb
->height
<< 16;
910 /* Make sure source coordinates are inside the fb. */
911 if (state
->src_w
> fb_width
||
912 state
->src_x
> fb_width
- state
->src_w
||
913 state
->src_h
> fb_height
||
914 state
->src_y
> fb_height
- state
->src_h
) {
915 DRM_DEBUG_ATOMIC("Invalid source coordinates "
916 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
917 state
->src_w
>> 16, ((state
->src_w
& 0xffff) * 15625) >> 10,
918 state
->src_h
>> 16, ((state
->src_h
& 0xffff) * 15625) >> 10,
919 state
->src_x
>> 16, ((state
->src_x
& 0xffff) * 15625) >> 10,
920 state
->src_y
>> 16, ((state
->src_y
& 0xffff) * 15625) >> 10);
924 if (plane_switching_crtc(state
->state
, plane
, state
)) {
925 DRM_DEBUG_ATOMIC("[PLANE:%d:%s] switching CRTC directly\n",
926 plane
->base
.id
, plane
->name
);
933 static void drm_atomic_plane_print_state(struct drm_printer
*p
,
934 const struct drm_plane_state
*state
)
936 struct drm_plane
*plane
= state
->plane
;
937 struct drm_rect src
= drm_plane_state_src(state
);
938 struct drm_rect dest
= drm_plane_state_dest(state
);
940 drm_printf(p
, "plane[%u]: %s\n", plane
->base
.id
, plane
->name
);
941 drm_printf(p
, "\tcrtc=%s\n", state
->crtc
? state
->crtc
->name
: "(null)");
942 drm_printf(p
, "\tfb=%u\n", state
->fb
? state
->fb
->base
.id
: 0);
944 struct drm_framebuffer
*fb
= state
->fb
;
945 int i
, n
= fb
->format
->num_planes
;
946 struct drm_format_name_buf format_name
;
948 drm_printf(p
, "\t\tformat=%s\n",
949 drm_get_format_name(fb
->format
->format
, &format_name
));
950 drm_printf(p
, "\t\t\tmodifier=0x%llx\n", fb
->modifier
);
951 drm_printf(p
, "\t\tsize=%dx%d\n", fb
->width
, fb
->height
);
952 drm_printf(p
, "\t\tlayers:\n");
953 for (i
= 0; i
< n
; i
++) {
954 drm_printf(p
, "\t\t\tpitch[%d]=%u\n", i
, fb
->pitches
[i
]);
955 drm_printf(p
, "\t\t\toffset[%d]=%u\n", i
, fb
->offsets
[i
]);
958 drm_printf(p
, "\tcrtc-pos=" DRM_RECT_FMT
"\n", DRM_RECT_ARG(&dest
));
959 drm_printf(p
, "\tsrc-pos=" DRM_RECT_FP_FMT
"\n", DRM_RECT_FP_ARG(&src
));
960 drm_printf(p
, "\trotation=%x\n", state
->rotation
);
962 if (plane
->funcs
->atomic_print_state
)
963 plane
->funcs
->atomic_print_state(p
, state
);
967 * drm_atomic_private_obj_init - initialize private object
968 * @obj: private object
969 * @state: initial private object state
970 * @funcs: pointer to the struct of function pointers that identify the object
973 * Initialize the private object, which can be embedded into any
974 * driver private object that needs its own atomic state.
977 drm_atomic_private_obj_init(struct drm_private_obj
*obj
,
978 struct drm_private_state
*state
,
979 const struct drm_private_state_funcs
*funcs
)
981 memset(obj
, 0, sizeof(*obj
));
986 EXPORT_SYMBOL(drm_atomic_private_obj_init
);
989 * drm_atomic_private_obj_fini - finalize private object
990 * @obj: private object
992 * Finalize the private object.
995 drm_atomic_private_obj_fini(struct drm_private_obj
*obj
)
997 obj
->funcs
->atomic_destroy_state(obj
, obj
->state
);
999 EXPORT_SYMBOL(drm_atomic_private_obj_fini
);
1002 * drm_atomic_get_private_obj_state - get private object state
1003 * @state: global atomic state
1004 * @obj: private object to get the state for
1006 * This function returns the private object state for the given private object,
1007 * allocating the state if needed. It does not grab any locks as the caller is
1008 * expected to care of any required locking.
1012 * Either the allocated state or the error code encoded into a pointer.
1014 struct drm_private_state
*
1015 drm_atomic_get_private_obj_state(struct drm_atomic_state
*state
,
1016 struct drm_private_obj
*obj
)
1018 int index
, num_objs
, i
;
1020 struct __drm_private_objs_state
*arr
;
1021 struct drm_private_state
*obj_state
;
1023 for (i
= 0; i
< state
->num_private_objs
; i
++)
1024 if (obj
== state
->private_objs
[i
].ptr
)
1025 return state
->private_objs
[i
].state
;
1027 num_objs
= state
->num_private_objs
+ 1;
1028 size
= sizeof(*state
->private_objs
) * num_objs
;
1029 arr
= krealloc(state
->private_objs
, size
, GFP_KERNEL
);
1031 return ERR_PTR(-ENOMEM
);
1033 state
->private_objs
= arr
;
1034 index
= state
->num_private_objs
;
1035 memset(&state
->private_objs
[index
], 0, sizeof(*state
->private_objs
));
1037 obj_state
= obj
->funcs
->atomic_duplicate_state(obj
);
1039 return ERR_PTR(-ENOMEM
);
1041 state
->private_objs
[index
].state
= obj_state
;
1042 state
->private_objs
[index
].old_state
= obj
->state
;
1043 state
->private_objs
[index
].new_state
= obj_state
;
1044 state
->private_objs
[index
].ptr
= obj
;
1046 state
->num_private_objs
= num_objs
;
1048 DRM_DEBUG_ATOMIC("Added new private object %p state %p to %p\n",
1049 obj
, obj_state
, state
);
1053 EXPORT_SYMBOL(drm_atomic_get_private_obj_state
);
1056 * drm_atomic_get_connector_state - get connector state
1057 * @state: global atomic state object
1058 * @connector: connector to get state object for
1060 * This function returns the connector state for the given connector,
1061 * allocating it if needed. It will also grab the relevant connector lock to
1062 * make sure that the state is consistent.
1066 * Either the allocated state or the error code encoded into the pointer. When
1067 * the error is EDEADLK then the w/w mutex code has detected a deadlock and the
1068 * entire atomic sequence must be restarted. All other errors are fatal.
1070 struct drm_connector_state
*
1071 drm_atomic_get_connector_state(struct drm_atomic_state
*state
,
1072 struct drm_connector
*connector
)
1075 struct drm_mode_config
*config
= &connector
->dev
->mode_config
;
1076 struct drm_connector_state
*connector_state
;
1078 WARN_ON(!state
->acquire_ctx
);
1080 ret
= drm_modeset_lock(&config
->connection_mutex
, state
->acquire_ctx
);
1082 return ERR_PTR(ret
);
1084 index
= drm_connector_index(connector
);
1086 if (index
>= state
->num_connector
) {
1087 struct __drm_connnectors_state
*c
;
1088 int alloc
= max(index
+ 1, config
->num_connector
);
1090 c
= krealloc(state
->connectors
, alloc
* sizeof(*state
->connectors
), GFP_KERNEL
);
1092 return ERR_PTR(-ENOMEM
);
1094 state
->connectors
= c
;
1095 memset(&state
->connectors
[state
->num_connector
], 0,
1096 sizeof(*state
->connectors
) * (alloc
- state
->num_connector
));
1098 state
->num_connector
= alloc
;
1101 if (state
->connectors
[index
].state
)
1102 return state
->connectors
[index
].state
;
1104 connector_state
= connector
->funcs
->atomic_duplicate_state(connector
);
1105 if (!connector_state
)
1106 return ERR_PTR(-ENOMEM
);
1108 drm_connector_get(connector
);
1109 state
->connectors
[index
].state
= connector_state
;
1110 state
->connectors
[index
].old_state
= connector
->state
;
1111 state
->connectors
[index
].new_state
= connector_state
;
1112 state
->connectors
[index
].ptr
= connector
;
1113 connector_state
->state
= state
;
1115 DRM_DEBUG_ATOMIC("Added [CONNECTOR:%d:%s] %p state to %p\n",
1116 connector
->base
.id
, connector
->name
,
1117 connector_state
, state
);
1119 if (connector_state
->crtc
) {
1120 struct drm_crtc_state
*crtc_state
;
1122 crtc_state
= drm_atomic_get_crtc_state(state
,
1123 connector_state
->crtc
);
1124 if (IS_ERR(crtc_state
))
1125 return ERR_CAST(crtc_state
);
1128 return connector_state
;
1130 EXPORT_SYMBOL(drm_atomic_get_connector_state
);
1133 * drm_atomic_connector_set_property - set property on connector.
1134 * @connector: the drm connector to set a property on
1135 * @state: the state object to update with the new property value
1136 * @property: the property to set
1137 * @val: the new property value
1139 * This function handles generic/core properties and calls out to driver's
1140 * &drm_connector_funcs.atomic_set_property for driver properties. To ensure
1141 * consistent behavior you must call this function rather than the driver hook
1145 * Zero on success, error code on failure
1147 static int drm_atomic_connector_set_property(struct drm_connector
*connector
,
1148 struct drm_connector_state
*state
, struct drm_property
*property
,
1151 struct drm_device
*dev
= connector
->dev
;
1152 struct drm_mode_config
*config
= &dev
->mode_config
;
1154 if (property
== config
->prop_crtc_id
) {
1155 struct drm_crtc
*crtc
= drm_crtc_find(dev
, val
);
1156 return drm_atomic_set_crtc_for_connector(state
, crtc
);
1157 } else if (property
== config
->dpms_property
) {
1158 /* setting DPMS property requires special handling, which
1159 * is done in legacy setprop path for us. Disallow (for
1160 * now?) atomic writes to DPMS property:
1163 } else if (property
== config
->tv_select_subconnector_property
) {
1164 state
->tv
.subconnector
= val
;
1165 } else if (property
== config
->tv_left_margin_property
) {
1166 state
->tv
.margins
.left
= val
;
1167 } else if (property
== config
->tv_right_margin_property
) {
1168 state
->tv
.margins
.right
= val
;
1169 } else if (property
== config
->tv_top_margin_property
) {
1170 state
->tv
.margins
.top
= val
;
1171 } else if (property
== config
->tv_bottom_margin_property
) {
1172 state
->tv
.margins
.bottom
= val
;
1173 } else if (property
== config
->tv_mode_property
) {
1174 state
->tv
.mode
= val
;
1175 } else if (property
== config
->tv_brightness_property
) {
1176 state
->tv
.brightness
= val
;
1177 } else if (property
== config
->tv_contrast_property
) {
1178 state
->tv
.contrast
= val
;
1179 } else if (property
== config
->tv_flicker_reduction_property
) {
1180 state
->tv
.flicker_reduction
= val
;
1181 } else if (property
== config
->tv_overscan_property
) {
1182 state
->tv
.overscan
= val
;
1183 } else if (property
== config
->tv_saturation_property
) {
1184 state
->tv
.saturation
= val
;
1185 } else if (property
== config
->tv_hue_property
) {
1186 state
->tv
.hue
= val
;
1187 } else if (property
== config
->link_status_property
) {
1188 /* Never downgrade from GOOD to BAD on userspace's request here,
1189 * only hw issues can do that.
1191 * For an atomic property the userspace doesn't need to be able
1192 * to understand all the properties, but needs to be able to
1193 * restore the state it wants on VT switch. So if the userspace
1194 * tries to change the link_status from GOOD to BAD, driver
1195 * silently rejects it and returns a 0. This prevents userspace
1196 * from accidently breaking the display when it restores the
1199 if (state
->link_status
!= DRM_LINK_STATUS_GOOD
)
1200 state
->link_status
= val
;
1201 } else if (property
== config
->aspect_ratio_property
) {
1202 state
->picture_aspect_ratio
= val
;
1203 } else if (property
== connector
->scaling_mode_property
) {
1204 state
->scaling_mode
= val
;
1205 } else if (connector
->funcs
->atomic_set_property
) {
1206 return connector
->funcs
->atomic_set_property(connector
,
1207 state
, property
, val
);
1215 static void drm_atomic_connector_print_state(struct drm_printer
*p
,
1216 const struct drm_connector_state
*state
)
1218 struct drm_connector
*connector
= state
->connector
;
1220 drm_printf(p
, "connector[%u]: %s\n", connector
->base
.id
, connector
->name
);
1221 drm_printf(p
, "\tcrtc=%s\n", state
->crtc
? state
->crtc
->name
: "(null)");
1223 if (connector
->funcs
->atomic_print_state
)
1224 connector
->funcs
->atomic_print_state(p
, state
);
1228 * drm_atomic_connector_get_property - get property value from connector state
1229 * @connector: the drm connector to set a property on
1230 * @state: the state object to get the property value from
1231 * @property: the property to set
1232 * @val: return location for the property value
1234 * This function handles generic/core properties and calls out to driver's
1235 * &drm_connector_funcs.atomic_get_property for driver properties. To ensure
1236 * consistent behavior you must call this function rather than the driver hook
1240 * Zero on success, error code on failure
1243 drm_atomic_connector_get_property(struct drm_connector
*connector
,
1244 const struct drm_connector_state
*state
,
1245 struct drm_property
*property
, uint64_t *val
)
1247 struct drm_device
*dev
= connector
->dev
;
1248 struct drm_mode_config
*config
= &dev
->mode_config
;
1250 if (property
== config
->prop_crtc_id
) {
1251 *val
= (state
->crtc
) ? state
->crtc
->base
.id
: 0;
1252 } else if (property
== config
->dpms_property
) {
1253 *val
= connector
->dpms
;
1254 } else if (property
== config
->tv_select_subconnector_property
) {
1255 *val
= state
->tv
.subconnector
;
1256 } else if (property
== config
->tv_left_margin_property
) {
1257 *val
= state
->tv
.margins
.left
;
1258 } else if (property
== config
->tv_right_margin_property
) {
1259 *val
= state
->tv
.margins
.right
;
1260 } else if (property
== config
->tv_top_margin_property
) {
1261 *val
= state
->tv
.margins
.top
;
1262 } else if (property
== config
->tv_bottom_margin_property
) {
1263 *val
= state
->tv
.margins
.bottom
;
1264 } else if (property
== config
->tv_mode_property
) {
1265 *val
= state
->tv
.mode
;
1266 } else if (property
== config
->tv_brightness_property
) {
1267 *val
= state
->tv
.brightness
;
1268 } else if (property
== config
->tv_contrast_property
) {
1269 *val
= state
->tv
.contrast
;
1270 } else if (property
== config
->tv_flicker_reduction_property
) {
1271 *val
= state
->tv
.flicker_reduction
;
1272 } else if (property
== config
->tv_overscan_property
) {
1273 *val
= state
->tv
.overscan
;
1274 } else if (property
== config
->tv_saturation_property
) {
1275 *val
= state
->tv
.saturation
;
1276 } else if (property
== config
->tv_hue_property
) {
1277 *val
= state
->tv
.hue
;
1278 } else if (property
== config
->link_status_property
) {
1279 *val
= state
->link_status
;
1280 } else if (property
== config
->aspect_ratio_property
) {
1281 *val
= state
->picture_aspect_ratio
;
1282 } else if (property
== connector
->scaling_mode_property
) {
1283 *val
= state
->scaling_mode
;
1284 } else if (connector
->funcs
->atomic_get_property
) {
1285 return connector
->funcs
->atomic_get_property(connector
,
1286 state
, property
, val
);
1294 int drm_atomic_get_property(struct drm_mode_object
*obj
,
1295 struct drm_property
*property
, uint64_t *val
)
1297 struct drm_device
*dev
= property
->dev
;
1300 switch (obj
->type
) {
1301 case DRM_MODE_OBJECT_CONNECTOR
: {
1302 struct drm_connector
*connector
= obj_to_connector(obj
);
1303 WARN_ON(!drm_modeset_is_locked(&dev
->mode_config
.connection_mutex
));
1304 ret
= drm_atomic_connector_get_property(connector
,
1305 connector
->state
, property
, val
);
1308 case DRM_MODE_OBJECT_CRTC
: {
1309 struct drm_crtc
*crtc
= obj_to_crtc(obj
);
1310 WARN_ON(!drm_modeset_is_locked(&crtc
->mutex
));
1311 ret
= drm_atomic_crtc_get_property(crtc
,
1312 crtc
->state
, property
, val
);
1315 case DRM_MODE_OBJECT_PLANE
: {
1316 struct drm_plane
*plane
= obj_to_plane(obj
);
1317 WARN_ON(!drm_modeset_is_locked(&plane
->mutex
));
1318 ret
= drm_atomic_plane_get_property(plane
,
1319 plane
->state
, property
, val
);
1331 * drm_atomic_set_crtc_for_plane - set crtc for plane
1332 * @plane_state: the plane whose incoming state to update
1333 * @crtc: crtc to use for the plane
1335 * Changing the assigned crtc for a plane requires us to grab the lock and state
1336 * for the new crtc, as needed. This function takes care of all these details
1337 * besides updating the pointer in the state object itself.
1340 * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK
1341 * then the w/w mutex code has detected a deadlock and the entire atomic
1342 * sequence must be restarted. All other errors are fatal.
1345 drm_atomic_set_crtc_for_plane(struct drm_plane_state
*plane_state
,
1346 struct drm_crtc
*crtc
)
1348 struct drm_plane
*plane
= plane_state
->plane
;
1349 struct drm_crtc_state
*crtc_state
;
1351 if (plane_state
->crtc
) {
1352 crtc_state
= drm_atomic_get_crtc_state(plane_state
->state
,
1354 if (WARN_ON(IS_ERR(crtc_state
)))
1355 return PTR_ERR(crtc_state
);
1357 crtc_state
->plane_mask
&= ~(1 << drm_plane_index(plane
));
1360 plane_state
->crtc
= crtc
;
1363 crtc_state
= drm_atomic_get_crtc_state(plane_state
->state
,
1365 if (IS_ERR(crtc_state
))
1366 return PTR_ERR(crtc_state
);
1367 crtc_state
->plane_mask
|= (1 << drm_plane_index(plane
));
1371 DRM_DEBUG_ATOMIC("Link plane state %p to [CRTC:%d:%s]\n",
1372 plane_state
, crtc
->base
.id
, crtc
->name
);
1374 DRM_DEBUG_ATOMIC("Link plane state %p to [NOCRTC]\n",
1379 EXPORT_SYMBOL(drm_atomic_set_crtc_for_plane
);
1382 * drm_atomic_set_fb_for_plane - set framebuffer for plane
1383 * @plane_state: atomic state object for the plane
1384 * @fb: fb to use for the plane
1386 * Changing the assigned framebuffer for a plane requires us to grab a reference
1387 * to the new fb and drop the reference to the old fb, if there is one. This
1388 * function takes care of all these details besides updating the pointer in the
1389 * state object itself.
1392 drm_atomic_set_fb_for_plane(struct drm_plane_state
*plane_state
,
1393 struct drm_framebuffer
*fb
)
1396 DRM_DEBUG_ATOMIC("Set [FB:%d] for plane state %p\n",
1397 fb
->base
.id
, plane_state
);
1399 DRM_DEBUG_ATOMIC("Set [NOFB] for plane state %p\n",
1402 drm_framebuffer_assign(&plane_state
->fb
, fb
);
1404 EXPORT_SYMBOL(drm_atomic_set_fb_for_plane
);
1407 * drm_atomic_set_fence_for_plane - set fence for plane
1408 * @plane_state: atomic state object for the plane
1409 * @fence: dma_fence to use for the plane
1411 * Helper to setup the plane_state fence in case it is not set yet.
1412 * By using this drivers doesn't need to worry if the user choose
1413 * implicit or explicit fencing.
1415 * This function will not set the fence to the state if it was set
1416 * via explicit fencing interfaces on the atomic ioctl. In that case it will
1417 * drop the reference to the fence as we are not storing it anywhere.
1418 * Otherwise, if &drm_plane_state.fence is not set this function we just set it
1419 * with the received implicit fence. In both cases this function consumes a
1420 * reference for @fence.
1423 drm_atomic_set_fence_for_plane(struct drm_plane_state
*plane_state
,
1424 struct dma_fence
*fence
)
1426 if (plane_state
->fence
) {
1427 dma_fence_put(fence
);
1431 plane_state
->fence
= fence
;
1433 EXPORT_SYMBOL(drm_atomic_set_fence_for_plane
);
1436 * drm_atomic_set_crtc_for_connector - set crtc for connector
1437 * @conn_state: atomic state object for the connector
1438 * @crtc: crtc to use for the connector
1440 * Changing the assigned crtc for a connector requires us to grab the lock and
1441 * state for the new crtc, as needed. This function takes care of all these
1442 * details besides updating the pointer in the state object itself.
1445 * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK
1446 * then the w/w mutex code has detected a deadlock and the entire atomic
1447 * sequence must be restarted. All other errors are fatal.
1450 drm_atomic_set_crtc_for_connector(struct drm_connector_state
*conn_state
,
1451 struct drm_crtc
*crtc
)
1453 struct drm_crtc_state
*crtc_state
;
1455 if (conn_state
->crtc
== crtc
)
1458 if (conn_state
->crtc
) {
1459 crtc_state
= drm_atomic_get_new_crtc_state(conn_state
->state
,
1462 crtc_state
->connector_mask
&=
1463 ~(1 << drm_connector_index(conn_state
->connector
));
1465 drm_connector_put(conn_state
->connector
);
1466 conn_state
->crtc
= NULL
;
1470 crtc_state
= drm_atomic_get_crtc_state(conn_state
->state
, crtc
);
1471 if (IS_ERR(crtc_state
))
1472 return PTR_ERR(crtc_state
);
1474 crtc_state
->connector_mask
|=
1475 1 << drm_connector_index(conn_state
->connector
);
1477 drm_connector_get(conn_state
->connector
);
1478 conn_state
->crtc
= crtc
;
1480 DRM_DEBUG_ATOMIC("Link connector state %p to [CRTC:%d:%s]\n",
1481 conn_state
, crtc
->base
.id
, crtc
->name
);
1483 DRM_DEBUG_ATOMIC("Link connector state %p to [NOCRTC]\n",
1489 EXPORT_SYMBOL(drm_atomic_set_crtc_for_connector
);
1492 * drm_atomic_add_affected_connectors - add connectors for crtc
1493 * @state: atomic state
1496 * This function walks the current configuration and adds all connectors
1497 * currently using @crtc to the atomic configuration @state. Note that this
1498 * function must acquire the connection mutex. This can potentially cause
1499 * unneeded seralization if the update is just for the planes on one crtc. Hence
1500 * drivers and helpers should only call this when really needed (e.g. when a
1501 * full modeset needs to happen due to some change).
1504 * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK
1505 * then the w/w mutex code has detected a deadlock and the entire atomic
1506 * sequence must be restarted. All other errors are fatal.
1509 drm_atomic_add_affected_connectors(struct drm_atomic_state
*state
,
1510 struct drm_crtc
*crtc
)
1512 struct drm_mode_config
*config
= &state
->dev
->mode_config
;
1513 struct drm_connector
*connector
;
1514 struct drm_connector_state
*conn_state
;
1515 struct drm_connector_list_iter conn_iter
;
1516 struct drm_crtc_state
*crtc_state
;
1519 crtc_state
= drm_atomic_get_crtc_state(state
, crtc
);
1520 if (IS_ERR(crtc_state
))
1521 return PTR_ERR(crtc_state
);
1523 ret
= drm_modeset_lock(&config
->connection_mutex
, state
->acquire_ctx
);
1527 DRM_DEBUG_ATOMIC("Adding all current connectors for [CRTC:%d:%s] to %p\n",
1528 crtc
->base
.id
, crtc
->name
, state
);
1531 * Changed connectors are already in @state, so only need to look
1532 * at the connector_mask in crtc_state.
1534 drm_connector_list_iter_begin(state
->dev
, &conn_iter
);
1535 drm_for_each_connector_iter(connector
, &conn_iter
) {
1536 if (!(crtc_state
->connector_mask
& (1 << drm_connector_index(connector
))))
1539 conn_state
= drm_atomic_get_connector_state(state
, connector
);
1540 if (IS_ERR(conn_state
)) {
1541 drm_connector_list_iter_end(&conn_iter
);
1542 return PTR_ERR(conn_state
);
1545 drm_connector_list_iter_end(&conn_iter
);
1549 EXPORT_SYMBOL(drm_atomic_add_affected_connectors
);
1552 * drm_atomic_add_affected_planes - add planes for crtc
1553 * @state: atomic state
1556 * This function walks the current configuration and adds all planes
1557 * currently used by @crtc to the atomic configuration @state. This is useful
1558 * when an atomic commit also needs to check all currently enabled plane on
1559 * @crtc, e.g. when changing the mode. It's also useful when re-enabling a CRTC
1560 * to avoid special code to force-enable all planes.
1562 * Since acquiring a plane state will always also acquire the w/w mutex of the
1563 * current CRTC for that plane (if there is any) adding all the plane states for
1564 * a CRTC will not reduce parallism of atomic updates.
1567 * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK
1568 * then the w/w mutex code has detected a deadlock and the entire atomic
1569 * sequence must be restarted. All other errors are fatal.
1572 drm_atomic_add_affected_planes(struct drm_atomic_state
*state
,
1573 struct drm_crtc
*crtc
)
1575 struct drm_plane
*plane
;
1577 WARN_ON(!drm_atomic_get_new_crtc_state(state
, crtc
));
1579 drm_for_each_plane_mask(plane
, state
->dev
, crtc
->state
->plane_mask
) {
1580 struct drm_plane_state
*plane_state
=
1581 drm_atomic_get_plane_state(state
, plane
);
1583 if (IS_ERR(plane_state
))
1584 return PTR_ERR(plane_state
);
1588 EXPORT_SYMBOL(drm_atomic_add_affected_planes
);
1591 * drm_atomic_check_only - check whether a given config would work
1592 * @state: atomic configuration to check
1594 * Note that this function can return -EDEADLK if the driver needed to acquire
1595 * more locks but encountered a deadlock. The caller must then do the usual w/w
1596 * backoff dance and restart. All other errors are fatal.
1599 * 0 on success, negative error code on failure.
1601 int drm_atomic_check_only(struct drm_atomic_state
*state
)
1603 struct drm_device
*dev
= state
->dev
;
1604 struct drm_mode_config
*config
= &dev
->mode_config
;
1605 struct drm_plane
*plane
;
1606 struct drm_plane_state
*plane_state
;
1607 struct drm_crtc
*crtc
;
1608 struct drm_crtc_state
*crtc_state
;
1611 DRM_DEBUG_ATOMIC("checking %p\n", state
);
1613 for_each_new_plane_in_state(state
, plane
, plane_state
, i
) {
1614 ret
= drm_atomic_plane_check(plane
, plane_state
);
1616 DRM_DEBUG_ATOMIC("[PLANE:%d:%s] atomic core check failed\n",
1617 plane
->base
.id
, plane
->name
);
1622 for_each_new_crtc_in_state(state
, crtc
, crtc_state
, i
) {
1623 ret
= drm_atomic_crtc_check(crtc
, crtc_state
);
1625 DRM_DEBUG_ATOMIC("[CRTC:%d:%s] atomic core check failed\n",
1626 crtc
->base
.id
, crtc
->name
);
1631 if (config
->funcs
->atomic_check
)
1632 ret
= config
->funcs
->atomic_check(state
->dev
, state
);
1637 if (!state
->allow_modeset
) {
1638 for_each_new_crtc_in_state(state
, crtc
, crtc_state
, i
) {
1639 if (drm_atomic_crtc_needs_modeset(crtc_state
)) {
1640 DRM_DEBUG_ATOMIC("[CRTC:%d:%s] requires full modeset\n",
1641 crtc
->base
.id
, crtc
->name
);
1649 EXPORT_SYMBOL(drm_atomic_check_only
);
1652 * drm_atomic_commit - commit configuration atomically
1653 * @state: atomic configuration to check
1655 * Note that this function can return -EDEADLK if the driver needed to acquire
1656 * more locks but encountered a deadlock. The caller must then do the usual w/w
1657 * backoff dance and restart. All other errors are fatal.
1659 * This function will take its own reference on @state.
1660 * Callers should always release their reference with drm_atomic_state_put().
1663 * 0 on success, negative error code on failure.
1665 int drm_atomic_commit(struct drm_atomic_state
*state
)
1667 struct drm_mode_config
*config
= &state
->dev
->mode_config
;
1670 ret
= drm_atomic_check_only(state
);
1674 DRM_DEBUG_ATOMIC("committing %p\n", state
);
1676 return config
->funcs
->atomic_commit(state
->dev
, state
, false);
1678 EXPORT_SYMBOL(drm_atomic_commit
);
1681 * drm_atomic_nonblocking_commit - atomic nonblocking commit
1682 * @state: atomic configuration to check
1684 * Note that this function can return -EDEADLK if the driver needed to acquire
1685 * more locks but encountered a deadlock. The caller must then do the usual w/w
1686 * backoff dance and restart. All other errors are fatal.
1688 * This function will take its own reference on @state.
1689 * Callers should always release their reference with drm_atomic_state_put().
1692 * 0 on success, negative error code on failure.
1694 int drm_atomic_nonblocking_commit(struct drm_atomic_state
*state
)
1696 struct drm_mode_config
*config
= &state
->dev
->mode_config
;
1699 ret
= drm_atomic_check_only(state
);
1703 DRM_DEBUG_ATOMIC("committing %p nonblocking\n", state
);
1705 return config
->funcs
->atomic_commit(state
->dev
, state
, true);
1707 EXPORT_SYMBOL(drm_atomic_nonblocking_commit
);
1709 static void drm_atomic_print_state(const struct drm_atomic_state
*state
)
1711 struct drm_printer p
= drm_info_printer(state
->dev
->dev
);
1712 struct drm_plane
*plane
;
1713 struct drm_plane_state
*plane_state
;
1714 struct drm_crtc
*crtc
;
1715 struct drm_crtc_state
*crtc_state
;
1716 struct drm_connector
*connector
;
1717 struct drm_connector_state
*connector_state
;
1720 DRM_DEBUG_ATOMIC("checking %p\n", state
);
1722 for_each_new_plane_in_state(state
, plane
, plane_state
, i
)
1723 drm_atomic_plane_print_state(&p
, plane_state
);
1725 for_each_new_crtc_in_state(state
, crtc
, crtc_state
, i
)
1726 drm_atomic_crtc_print_state(&p
, crtc_state
);
1728 for_each_new_connector_in_state(state
, connector
, connector_state
, i
)
1729 drm_atomic_connector_print_state(&p
, connector_state
);
1732 static void __drm_state_dump(struct drm_device
*dev
, struct drm_printer
*p
,
1735 struct drm_mode_config
*config
= &dev
->mode_config
;
1736 struct drm_plane
*plane
;
1737 struct drm_crtc
*crtc
;
1738 struct drm_connector
*connector
;
1739 struct drm_connector_list_iter conn_iter
;
1741 if (!drm_core_check_feature(dev
, DRIVER_ATOMIC
))
1744 list_for_each_entry(plane
, &config
->plane_list
, head
) {
1746 drm_modeset_lock(&plane
->mutex
, NULL
);
1747 drm_atomic_plane_print_state(p
, plane
->state
);
1749 drm_modeset_unlock(&plane
->mutex
);
1752 list_for_each_entry(crtc
, &config
->crtc_list
, head
) {
1754 drm_modeset_lock(&crtc
->mutex
, NULL
);
1755 drm_atomic_crtc_print_state(p
, crtc
->state
);
1757 drm_modeset_unlock(&crtc
->mutex
);
1760 drm_connector_list_iter_begin(dev
, &conn_iter
);
1762 drm_modeset_lock(&dev
->mode_config
.connection_mutex
, NULL
);
1763 drm_for_each_connector_iter(connector
, &conn_iter
)
1764 drm_atomic_connector_print_state(p
, connector
->state
);
1766 drm_modeset_unlock(&dev
->mode_config
.connection_mutex
);
1767 drm_connector_list_iter_end(&conn_iter
);
1771 * drm_state_dump - dump entire device atomic state
1772 * @dev: the drm device
1773 * @p: where to print the state to
1775 * Just for debugging. Drivers might want an option to dump state
1776 * to dmesg in case of error irq's. (Hint, you probably want to
1779 * The caller must drm_modeset_lock_all(), or if this is called
1780 * from error irq handler, it should not be enabled by default.
1781 * (Ie. if you are debugging errors you might not care that this
1782 * is racey. But calling this without all modeset locks held is
1783 * not inherently safe.)
1785 void drm_state_dump(struct drm_device
*dev
, struct drm_printer
*p
)
1787 __drm_state_dump(dev
, p
, false);
1789 EXPORT_SYMBOL(drm_state_dump
);
1791 #ifdef CONFIG_DEBUG_FS
1792 static int drm_state_info(struct seq_file
*m
, void *data
)
1794 struct drm_info_node
*node
= (struct drm_info_node
*) m
->private;
1795 struct drm_device
*dev
= node
->minor
->dev
;
1796 struct drm_printer p
= drm_seq_file_printer(m
);
1798 __drm_state_dump(dev
, &p
, true);
1803 /* any use in debugfs files to dump individual planes/crtc/etc? */
1804 static const struct drm_info_list drm_atomic_debugfs_list
[] = {
1805 {"state", drm_state_info
, 0},
1808 int drm_atomic_debugfs_init(struct drm_minor
*minor
)
1810 return drm_debugfs_create_files(drm_atomic_debugfs_list
,
1811 ARRAY_SIZE(drm_atomic_debugfs_list
),
1812 minor
->debugfs_root
, minor
);
1817 * The big monstor ioctl
1820 static struct drm_pending_vblank_event
*create_vblank_event(
1821 struct drm_device
*dev
, uint64_t user_data
)
1823 struct drm_pending_vblank_event
*e
= NULL
;
1825 e
= kzalloc(sizeof *e
, GFP_KERNEL
);
1829 e
->event
.base
.type
= DRM_EVENT_FLIP_COMPLETE
;
1830 e
->event
.base
.length
= sizeof(e
->event
);
1831 e
->event
.user_data
= user_data
;
1836 int drm_atomic_connector_commit_dpms(struct drm_atomic_state
*state
,
1837 struct drm_connector
*connector
,
1840 struct drm_connector
*tmp_connector
;
1841 struct drm_connector_state
*new_conn_state
;
1842 struct drm_crtc
*crtc
;
1843 struct drm_crtc_state
*crtc_state
;
1844 int i
, ret
, old_mode
= connector
->dpms
;
1845 bool active
= false;
1847 ret
= drm_modeset_lock(&state
->dev
->mode_config
.connection_mutex
,
1848 state
->acquire_ctx
);
1852 if (mode
!= DRM_MODE_DPMS_ON
)
1853 mode
= DRM_MODE_DPMS_OFF
;
1854 connector
->dpms
= mode
;
1856 crtc
= connector
->state
->crtc
;
1859 ret
= drm_atomic_add_affected_connectors(state
, crtc
);
1863 crtc_state
= drm_atomic_get_crtc_state(state
, crtc
);
1864 if (IS_ERR(crtc_state
)) {
1865 ret
= PTR_ERR(crtc_state
);
1869 for_each_new_connector_in_state(state
, tmp_connector
, new_conn_state
, i
) {
1870 if (new_conn_state
->crtc
!= crtc
)
1872 if (tmp_connector
->dpms
== DRM_MODE_DPMS_ON
) {
1878 crtc_state
->active
= active
;
1879 ret
= drm_atomic_commit(state
);
1882 connector
->dpms
= old_mode
;
1886 int drm_atomic_set_property(struct drm_atomic_state
*state
,
1887 struct drm_mode_object
*obj
,
1888 struct drm_property
*prop
,
1889 uint64_t prop_value
)
1891 struct drm_mode_object
*ref
;
1894 if (!drm_property_change_valid_get(prop
, prop_value
, &ref
))
1897 switch (obj
->type
) {
1898 case DRM_MODE_OBJECT_CONNECTOR
: {
1899 struct drm_connector
*connector
= obj_to_connector(obj
);
1900 struct drm_connector_state
*connector_state
;
1902 connector_state
= drm_atomic_get_connector_state(state
, connector
);
1903 if (IS_ERR(connector_state
)) {
1904 ret
= PTR_ERR(connector_state
);
1908 ret
= drm_atomic_connector_set_property(connector
,
1909 connector_state
, prop
, prop_value
);
1912 case DRM_MODE_OBJECT_CRTC
: {
1913 struct drm_crtc
*crtc
= obj_to_crtc(obj
);
1914 struct drm_crtc_state
*crtc_state
;
1916 crtc_state
= drm_atomic_get_crtc_state(state
, crtc
);
1917 if (IS_ERR(crtc_state
)) {
1918 ret
= PTR_ERR(crtc_state
);
1922 ret
= drm_atomic_crtc_set_property(crtc
,
1923 crtc_state
, prop
, prop_value
);
1926 case DRM_MODE_OBJECT_PLANE
: {
1927 struct drm_plane
*plane
= obj_to_plane(obj
);
1928 struct drm_plane_state
*plane_state
;
1930 plane_state
= drm_atomic_get_plane_state(state
, plane
);
1931 if (IS_ERR(plane_state
)) {
1932 ret
= PTR_ERR(plane_state
);
1936 ret
= drm_atomic_plane_set_property(plane
,
1937 plane_state
, prop
, prop_value
);
1945 drm_property_change_valid_put(prop
, ref
);
1950 * drm_atomic_clean_old_fb -- Unset old_fb pointers and set plane->fb pointers.
1952 * @dev: drm device to check.
1953 * @plane_mask: plane mask for planes that were updated.
1954 * @ret: return value, can be -EDEADLK for a retry.
1956 * Before doing an update &drm_plane.old_fb is set to &drm_plane.fb, but before
1957 * dropping the locks old_fb needs to be set to NULL and plane->fb updated. This
1958 * is a common operation for each atomic update, so this call is split off as a
1961 void drm_atomic_clean_old_fb(struct drm_device
*dev
,
1962 unsigned plane_mask
,
1965 struct drm_plane
*plane
;
1967 /* if succeeded, fixup legacy plane crtc/fb ptrs before dropping
1968 * locks (ie. while it is still safe to deref plane->state). We
1969 * need to do this here because the driver entry points cannot
1970 * distinguish between legacy and atomic ioctls.
1972 drm_for_each_plane_mask(plane
, dev
, plane_mask
) {
1974 struct drm_framebuffer
*new_fb
= plane
->state
->fb
;
1976 drm_framebuffer_get(new_fb
);
1978 plane
->crtc
= plane
->state
->crtc
;
1981 drm_framebuffer_put(plane
->old_fb
);
1983 plane
->old_fb
= NULL
;
1986 EXPORT_SYMBOL(drm_atomic_clean_old_fb
);
1989 * DOC: explicit fencing properties
1991 * Explicit fencing allows userspace to control the buffer synchronization
1992 * between devices. A Fence or a group of fences are transfered to/from
1993 * userspace using Sync File fds and there are two DRM properties for that.
1994 * IN_FENCE_FD on each DRM Plane to send fences to the kernel and
1995 * OUT_FENCE_PTR on each DRM CRTC to receive fences from the kernel.
1997 * As a contrast, with implicit fencing the kernel keeps track of any
1998 * ongoing rendering, and automatically ensures that the atomic update waits
1999 * for any pending rendering to complete. For shared buffers represented with
2000 * a &struct dma_buf this is tracked in &struct reservation_object.
2001 * Implicit syncing is how Linux traditionally worked (e.g. DRI2/3 on X.org),
2002 * whereas explicit fencing is what Android wants.
2005 * Use this property to pass a fence that DRM should wait on before
2006 * proceeding with the Atomic Commit request and show the framebuffer for
2007 * the plane on the screen. The fence can be either a normal fence or a
2008 * merged one, the sync_file framework will handle both cases and use a
2009 * fence_array if a merged fence is received. Passing -1 here means no
2010 * fences to wait on.
2012 * If the Atomic Commit request has the DRM_MODE_ATOMIC_TEST_ONLY flag
2013 * it will only check if the Sync File is a valid one.
2015 * On the driver side the fence is stored on the @fence parameter of
2016 * &struct drm_plane_state. Drivers which also support implicit fencing
2017 * should set the implicit fence using drm_atomic_set_fence_for_plane(),
2018 * to make sure there's consistent behaviour between drivers in precedence
2019 * of implicit vs. explicit fencing.
2022 * Use this property to pass a file descriptor pointer to DRM. Once the
2023 * Atomic Commit request call returns OUT_FENCE_PTR will be filled with
2024 * the file descriptor number of a Sync File. This Sync File contains the
2025 * CRTC fence that will be signaled when all framebuffers present on the
2026 * Atomic Commit * request for that given CRTC are scanned out on the
2029 * The Atomic Commit request fails if a invalid pointer is passed. If the
2030 * Atomic Commit request fails for any other reason the out fence fd
2031 * returned will be -1. On a Atomic Commit with the
2032 * DRM_MODE_ATOMIC_TEST_ONLY flag the out fence will also be set to -1.
2034 * Note that out-fences don't have a special interface to drivers and are
2035 * internally represented by a &struct drm_pending_vblank_event in struct
2036 * &drm_crtc_state, which is also used by the nonblocking atomic commit
2037 * helpers and for the DRM event handling for existing userspace.
2040 struct drm_out_fence_state
{
2041 s32 __user
*out_fence_ptr
;
2042 struct sync_file
*sync_file
;
2046 static int setup_out_fence(struct drm_out_fence_state
*fence_state
,
2047 struct dma_fence
*fence
)
2049 fence_state
->fd
= get_unused_fd_flags(O_CLOEXEC
);
2050 if (fence_state
->fd
< 0)
2051 return fence_state
->fd
;
2053 if (put_user(fence_state
->fd
, fence_state
->out_fence_ptr
))
2056 fence_state
->sync_file
= sync_file_create(fence
);
2057 if (!fence_state
->sync_file
)
2063 static int prepare_crtc_signaling(struct drm_device
*dev
,
2064 struct drm_atomic_state
*state
,
2065 struct drm_mode_atomic
*arg
,
2066 struct drm_file
*file_priv
,
2067 struct drm_out_fence_state
**fence_state
,
2068 unsigned int *num_fences
)
2070 struct drm_crtc
*crtc
;
2071 struct drm_crtc_state
*crtc_state
;
2074 if (arg
->flags
& DRM_MODE_ATOMIC_TEST_ONLY
)
2077 for_each_new_crtc_in_state(state
, crtc
, crtc_state
, i
) {
2078 s32 __user
*fence_ptr
;
2080 fence_ptr
= get_out_fence_for_crtc(crtc_state
->state
, crtc
);
2082 if (arg
->flags
& DRM_MODE_PAGE_FLIP_EVENT
|| fence_ptr
) {
2083 struct drm_pending_vblank_event
*e
;
2085 e
= create_vblank_event(dev
, arg
->user_data
);
2089 crtc_state
->event
= e
;
2092 if (arg
->flags
& DRM_MODE_PAGE_FLIP_EVENT
) {
2093 struct drm_pending_vblank_event
*e
= crtc_state
->event
;
2098 ret
= drm_event_reserve_init(dev
, file_priv
, &e
->base
,
2102 crtc_state
->event
= NULL
;
2108 struct dma_fence
*fence
;
2109 struct drm_out_fence_state
*f
;
2111 f
= krealloc(*fence_state
, sizeof(**fence_state
) *
2112 (*num_fences
+ 1), GFP_KERNEL
);
2116 memset(&f
[*num_fences
], 0, sizeof(*f
));
2118 f
[*num_fences
].out_fence_ptr
= fence_ptr
;
2121 fence
= drm_crtc_create_fence(crtc
);
2125 ret
= setup_out_fence(&f
[(*num_fences
)++], fence
);
2127 dma_fence_put(fence
);
2131 crtc_state
->event
->base
.fence
= fence
;
2138 * Having this flag means user mode pends on event which will never
2139 * reach due to lack of at least one CRTC for signaling
2141 if (c
== 0 && (arg
->flags
& DRM_MODE_PAGE_FLIP_EVENT
))
2147 static void complete_crtc_signaling(struct drm_device
*dev
,
2148 struct drm_atomic_state
*state
,
2149 struct drm_out_fence_state
*fence_state
,
2150 unsigned int num_fences
,
2153 struct drm_crtc
*crtc
;
2154 struct drm_crtc_state
*crtc_state
;
2158 for (i
= 0; i
< num_fences
; i
++)
2159 fd_install(fence_state
[i
].fd
,
2160 fence_state
[i
].sync_file
->file
);
2166 for_each_new_crtc_in_state(state
, crtc
, crtc_state
, i
) {
2167 struct drm_pending_vblank_event
*event
= crtc_state
->event
;
2169 * Free the allocated event. drm_atomic_helper_setup_commit
2170 * can allocate an event too, so only free it if it's ours
2171 * to prevent a double free in drm_atomic_state_clear.
2173 if (event
&& (event
->base
.fence
|| event
->base
.file_priv
)) {
2174 drm_event_cancel_free(dev
, &event
->base
);
2175 crtc_state
->event
= NULL
;
2182 for (i
= 0; i
< num_fences
; i
++) {
2183 if (fence_state
[i
].sync_file
)
2184 fput(fence_state
[i
].sync_file
->file
);
2185 if (fence_state
[i
].fd
>= 0)
2186 put_unused_fd(fence_state
[i
].fd
);
2188 /* If this fails log error to the user */
2189 if (fence_state
[i
].out_fence_ptr
&&
2190 put_user(-1, fence_state
[i
].out_fence_ptr
))
2191 DRM_DEBUG_ATOMIC("Couldn't clear out_fence_ptr\n");
2197 int drm_mode_atomic_ioctl(struct drm_device
*dev
,
2198 void *data
, struct drm_file
*file_priv
)
2200 struct drm_mode_atomic
*arg
= data
;
2201 uint32_t __user
*objs_ptr
= (uint32_t __user
*)(unsigned long)(arg
->objs_ptr
);
2202 uint32_t __user
*count_props_ptr
= (uint32_t __user
*)(unsigned long)(arg
->count_props_ptr
);
2203 uint32_t __user
*props_ptr
= (uint32_t __user
*)(unsigned long)(arg
->props_ptr
);
2204 uint64_t __user
*prop_values_ptr
= (uint64_t __user
*)(unsigned long)(arg
->prop_values_ptr
);
2205 unsigned int copied_objs
, copied_props
;
2206 struct drm_atomic_state
*state
;
2207 struct drm_modeset_acquire_ctx ctx
;
2208 struct drm_plane
*plane
;
2209 struct drm_out_fence_state
*fence_state
;
2210 unsigned plane_mask
;
2212 unsigned int i
, j
, num_fences
;
2214 /* disallow for drivers not supporting atomic: */
2215 if (!drm_core_check_feature(dev
, DRIVER_ATOMIC
))
2218 /* disallow for userspace that has not enabled atomic cap (even
2219 * though this may be a bit overkill, since legacy userspace
2220 * wouldn't know how to call this ioctl)
2222 if (!file_priv
->atomic
)
2225 if (arg
->flags
& ~DRM_MODE_ATOMIC_FLAGS
)
2231 if ((arg
->flags
& DRM_MODE_PAGE_FLIP_ASYNC
) &&
2232 !dev
->mode_config
.async_page_flip
)
2235 /* can't test and expect an event at the same time. */
2236 if ((arg
->flags
& DRM_MODE_ATOMIC_TEST_ONLY
) &&
2237 (arg
->flags
& DRM_MODE_PAGE_FLIP_EVENT
))
2240 drm_modeset_acquire_init(&ctx
, 0);
2242 state
= drm_atomic_state_alloc(dev
);
2246 state
->acquire_ctx
= &ctx
;
2247 state
->allow_modeset
= !!(arg
->flags
& DRM_MODE_ATOMIC_ALLOW_MODESET
);
2256 for (i
= 0; i
< arg
->count_objs
; i
++) {
2257 uint32_t obj_id
, count_props
;
2258 struct drm_mode_object
*obj
;
2260 if (get_user(obj_id
, objs_ptr
+ copied_objs
)) {
2265 obj
= drm_mode_object_find(dev
, obj_id
, DRM_MODE_OBJECT_ANY
);
2271 if (!obj
->properties
) {
2272 drm_mode_object_put(obj
);
2277 if (get_user(count_props
, count_props_ptr
+ copied_objs
)) {
2278 drm_mode_object_put(obj
);
2285 for (j
= 0; j
< count_props
; j
++) {
2287 uint64_t prop_value
;
2288 struct drm_property
*prop
;
2290 if (get_user(prop_id
, props_ptr
+ copied_props
)) {
2291 drm_mode_object_put(obj
);
2296 prop
= drm_mode_obj_find_prop_id(obj
, prop_id
);
2298 drm_mode_object_put(obj
);
2303 if (copy_from_user(&prop_value
,
2304 prop_values_ptr
+ copied_props
,
2305 sizeof(prop_value
))) {
2306 drm_mode_object_put(obj
);
2311 ret
= drm_atomic_set_property(state
, obj
, prop
,
2314 drm_mode_object_put(obj
);
2321 if (obj
->type
== DRM_MODE_OBJECT_PLANE
&& count_props
&&
2322 !(arg
->flags
& DRM_MODE_ATOMIC_TEST_ONLY
)) {
2323 plane
= obj_to_plane(obj
);
2324 plane_mask
|= (1 << drm_plane_index(plane
));
2325 plane
->old_fb
= plane
->fb
;
2327 drm_mode_object_put(obj
);
2330 ret
= prepare_crtc_signaling(dev
, state
, arg
, file_priv
, &fence_state
,
2335 if (arg
->flags
& DRM_MODE_ATOMIC_TEST_ONLY
) {
2336 ret
= drm_atomic_check_only(state
);
2337 } else if (arg
->flags
& DRM_MODE_ATOMIC_NONBLOCK
) {
2338 ret
= drm_atomic_nonblocking_commit(state
);
2340 if (unlikely(drm_debug
& DRM_UT_STATE
))
2341 drm_atomic_print_state(state
);
2343 ret
= drm_atomic_commit(state
);
2347 drm_atomic_clean_old_fb(dev
, plane_mask
, ret
);
2349 complete_crtc_signaling(dev
, state
, fence_state
, num_fences
, !ret
);
2351 if (ret
== -EDEADLK
) {
2352 drm_atomic_state_clear(state
);
2353 drm_modeset_backoff(&ctx
);
2357 drm_atomic_state_put(state
);
2359 drm_modeset_drop_locks(&ctx
);
2360 drm_modeset_acquire_fini(&ctx
);