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 state
->crtcs
[i
].ptr
= NULL
;
167 state
->crtcs
[i
].state
= NULL
;
170 for (i
= 0; i
< config
->num_total_plane
; i
++) {
171 struct drm_plane
*plane
= state
->planes
[i
].ptr
;
176 plane
->funcs
->atomic_destroy_state(plane
,
177 state
->planes
[i
].state
);
178 state
->planes
[i
].ptr
= NULL
;
179 state
->planes
[i
].state
= NULL
;
182 for (i
= 0; i
< state
->num_private_objs
; i
++) {
183 struct drm_private_obj
*obj
= state
->private_objs
[i
].ptr
;
188 obj
->funcs
->atomic_destroy_state(obj
,
189 state
->private_objs
[i
].state
);
190 state
->private_objs
[i
].ptr
= NULL
;
191 state
->private_objs
[i
].state
= NULL
;
193 state
->num_private_objs
= 0;
195 if (state
->fake_commit
) {
196 drm_crtc_commit_put(state
->fake_commit
);
197 state
->fake_commit
= NULL
;
200 EXPORT_SYMBOL(drm_atomic_state_default_clear
);
203 * drm_atomic_state_clear - clear state object
204 * @state: atomic state
206 * When the w/w mutex algorithm detects a deadlock we need to back off and drop
207 * all locks. So someone else could sneak in and change the current modeset
208 * configuration. Which means that all the state assembled in @state is no
209 * longer an atomic update to the current state, but to some arbitrary earlier
210 * state. Which could break assumptions the driver's
211 * &drm_mode_config_funcs.atomic_check likely relies on.
213 * Hence we must clear all cached state and completely start over, using this
216 void drm_atomic_state_clear(struct drm_atomic_state
*state
)
218 struct drm_device
*dev
= state
->dev
;
219 struct drm_mode_config
*config
= &dev
->mode_config
;
221 if (config
->funcs
->atomic_state_clear
)
222 config
->funcs
->atomic_state_clear(state
);
224 drm_atomic_state_default_clear(state
);
226 EXPORT_SYMBOL(drm_atomic_state_clear
);
229 * __drm_atomic_state_free - free all memory for an atomic state
230 * @ref: This atomic state to deallocate
232 * This frees all memory associated with an atomic state, including all the
233 * per-object state for planes, crtcs and connectors.
235 void __drm_atomic_state_free(struct kref
*ref
)
237 struct drm_atomic_state
*state
= container_of(ref
, typeof(*state
), ref
);
238 struct drm_mode_config
*config
= &state
->dev
->mode_config
;
240 drm_atomic_state_clear(state
);
242 DRM_DEBUG_ATOMIC("Freeing atomic state %p\n", state
);
244 if (config
->funcs
->atomic_state_free
) {
245 config
->funcs
->atomic_state_free(state
);
247 drm_atomic_state_default_release(state
);
251 EXPORT_SYMBOL(__drm_atomic_state_free
);
254 * drm_atomic_get_crtc_state - get crtc state
255 * @state: global atomic state object
256 * @crtc: crtc to get state object for
258 * This function returns the crtc state for the given crtc, allocating it if
259 * needed. It will also grab the relevant crtc lock to make sure that the state
264 * Either the allocated state or the error code encoded into the pointer. When
265 * the error is EDEADLK then the w/w mutex code has detected a deadlock and the
266 * entire atomic sequence must be restarted. All other errors are fatal.
268 struct drm_crtc_state
*
269 drm_atomic_get_crtc_state(struct drm_atomic_state
*state
,
270 struct drm_crtc
*crtc
)
272 int ret
, index
= drm_crtc_index(crtc
);
273 struct drm_crtc_state
*crtc_state
;
275 WARN_ON(!state
->acquire_ctx
);
277 crtc_state
= drm_atomic_get_existing_crtc_state(state
, crtc
);
281 ret
= drm_modeset_lock(&crtc
->mutex
, state
->acquire_ctx
);
285 crtc_state
= crtc
->funcs
->atomic_duplicate_state(crtc
);
287 return ERR_PTR(-ENOMEM
);
289 state
->crtcs
[index
].state
= crtc_state
;
290 state
->crtcs
[index
].old_state
= crtc
->state
;
291 state
->crtcs
[index
].new_state
= crtc_state
;
292 state
->crtcs
[index
].ptr
= crtc
;
293 crtc_state
->state
= state
;
295 DRM_DEBUG_ATOMIC("Added [CRTC:%d:%s] %p state to %p\n",
296 crtc
->base
.id
, crtc
->name
, crtc_state
, state
);
300 EXPORT_SYMBOL(drm_atomic_get_crtc_state
);
302 static void set_out_fence_for_crtc(struct drm_atomic_state
*state
,
303 struct drm_crtc
*crtc
, s32 __user
*fence_ptr
)
305 state
->crtcs
[drm_crtc_index(crtc
)].out_fence_ptr
= fence_ptr
;
308 static s32 __user
*get_out_fence_for_crtc(struct drm_atomic_state
*state
,
309 struct drm_crtc
*crtc
)
311 s32 __user
*fence_ptr
;
313 fence_ptr
= state
->crtcs
[drm_crtc_index(crtc
)].out_fence_ptr
;
314 state
->crtcs
[drm_crtc_index(crtc
)].out_fence_ptr
= NULL
;
320 * drm_atomic_set_mode_for_crtc - set mode for CRTC
321 * @state: the CRTC whose incoming state to update
322 * @mode: kernel-internal mode to use for the CRTC, or NULL to disable
324 * Set a mode (originating from the kernel) on the desired CRTC state and update
325 * the enable property.
328 * Zero on success, error code on failure. Cannot return -EDEADLK.
330 int drm_atomic_set_mode_for_crtc(struct drm_crtc_state
*state
,
331 const struct drm_display_mode
*mode
)
333 struct drm_mode_modeinfo umode
;
335 /* Early return for no change. */
336 if (mode
&& memcmp(&state
->mode
, mode
, sizeof(*mode
)) == 0)
339 drm_property_blob_put(state
->mode_blob
);
340 state
->mode_blob
= NULL
;
343 drm_mode_convert_to_umode(&umode
, mode
);
345 drm_property_create_blob(state
->crtc
->dev
,
348 if (IS_ERR(state
->mode_blob
))
349 return PTR_ERR(state
->mode_blob
);
351 drm_mode_copy(&state
->mode
, mode
);
352 state
->enable
= true;
353 DRM_DEBUG_ATOMIC("Set [MODE:%s] for CRTC state %p\n",
356 memset(&state
->mode
, 0, sizeof(state
->mode
));
357 state
->enable
= false;
358 DRM_DEBUG_ATOMIC("Set [NOMODE] for CRTC state %p\n",
364 EXPORT_SYMBOL(drm_atomic_set_mode_for_crtc
);
367 * drm_atomic_set_mode_prop_for_crtc - set mode for CRTC
368 * @state: the CRTC whose incoming state to update
369 * @blob: pointer to blob property to use for mode
371 * Set a mode (originating from a blob property) on the desired CRTC state.
372 * This function will take a reference on the blob property for the CRTC state,
373 * and release the reference held on the state's existing mode property, if any
377 * Zero on success, error code on failure. Cannot return -EDEADLK.
379 int drm_atomic_set_mode_prop_for_crtc(struct drm_crtc_state
*state
,
380 struct drm_property_blob
*blob
)
382 if (blob
== state
->mode_blob
)
385 drm_property_blob_put(state
->mode_blob
);
386 state
->mode_blob
= NULL
;
388 memset(&state
->mode
, 0, sizeof(state
->mode
));
391 if (blob
->length
!= sizeof(struct drm_mode_modeinfo
) ||
392 drm_mode_convert_umode(&state
->mode
,
393 (const struct drm_mode_modeinfo
*)
397 state
->mode_blob
= drm_property_blob_get(blob
);
398 state
->enable
= true;
399 DRM_DEBUG_ATOMIC("Set [MODE:%s] for CRTC state %p\n",
400 state
->mode
.name
, state
);
402 state
->enable
= false;
403 DRM_DEBUG_ATOMIC("Set [NOMODE] for CRTC state %p\n",
409 EXPORT_SYMBOL(drm_atomic_set_mode_prop_for_crtc
);
412 drm_atomic_replace_property_blob_from_id(struct drm_device
*dev
,
413 struct drm_property_blob
**blob
,
415 ssize_t expected_size
,
418 struct drm_property_blob
*new_blob
= NULL
;
421 new_blob
= drm_property_lookup_blob(dev
, blob_id
);
422 if (new_blob
== NULL
)
425 if (expected_size
> 0 && expected_size
!= new_blob
->length
) {
426 drm_property_blob_put(new_blob
);
431 *replaced
|= drm_property_replace_blob(blob
, new_blob
);
432 drm_property_blob_put(new_blob
);
438 * drm_atomic_crtc_set_property - set property on CRTC
439 * @crtc: the drm CRTC to set a property on
440 * @state: the state object to update with the new property value
441 * @property: the property to set
442 * @val: the new property value
444 * This function handles generic/core properties and calls out to driver's
445 * &drm_crtc_funcs.atomic_set_property for driver properties. To ensure
446 * consistent behavior you must call this function rather than the driver hook
450 * Zero on success, error code on failure
452 int drm_atomic_crtc_set_property(struct drm_crtc
*crtc
,
453 struct drm_crtc_state
*state
, struct drm_property
*property
,
456 struct drm_device
*dev
= crtc
->dev
;
457 struct drm_mode_config
*config
= &dev
->mode_config
;
458 bool replaced
= false;
461 if (property
== config
->prop_active
)
463 else if (property
== config
->prop_mode_id
) {
464 struct drm_property_blob
*mode
=
465 drm_property_lookup_blob(dev
, val
);
466 ret
= drm_atomic_set_mode_prop_for_crtc(state
, mode
);
467 drm_property_blob_put(mode
);
469 } else if (property
== config
->degamma_lut_property
) {
470 ret
= drm_atomic_replace_property_blob_from_id(dev
,
475 state
->color_mgmt_changed
|= replaced
;
477 } else if (property
== config
->ctm_property
) {
478 ret
= drm_atomic_replace_property_blob_from_id(dev
,
481 sizeof(struct drm_color_ctm
),
483 state
->color_mgmt_changed
|= replaced
;
485 } else if (property
== config
->gamma_lut_property
) {
486 ret
= drm_atomic_replace_property_blob_from_id(dev
,
491 state
->color_mgmt_changed
|= replaced
;
493 } else if (property
== config
->prop_out_fence_ptr
) {
494 s32 __user
*fence_ptr
= u64_to_user_ptr(val
);
499 if (put_user(-1, fence_ptr
))
502 set_out_fence_for_crtc(state
->state
, crtc
, fence_ptr
);
503 } else if (crtc
->funcs
->atomic_set_property
)
504 return crtc
->funcs
->atomic_set_property(crtc
, state
, property
, val
);
510 EXPORT_SYMBOL(drm_atomic_crtc_set_property
);
513 * drm_atomic_crtc_get_property - get property value from CRTC state
514 * @crtc: the drm CRTC to set a property on
515 * @state: the state object to get the property value from
516 * @property: the property to set
517 * @val: return location for the property value
519 * This function handles generic/core properties and calls out to driver's
520 * &drm_crtc_funcs.atomic_get_property for driver properties. To ensure
521 * consistent behavior you must call this function rather than the driver hook
525 * Zero on success, error code on failure
528 drm_atomic_crtc_get_property(struct drm_crtc
*crtc
,
529 const struct drm_crtc_state
*state
,
530 struct drm_property
*property
, uint64_t *val
)
532 struct drm_device
*dev
= crtc
->dev
;
533 struct drm_mode_config
*config
= &dev
->mode_config
;
535 if (property
== config
->prop_active
)
536 *val
= state
->active
;
537 else if (property
== config
->prop_mode_id
)
538 *val
= (state
->mode_blob
) ? state
->mode_blob
->base
.id
: 0;
539 else if (property
== config
->degamma_lut_property
)
540 *val
= (state
->degamma_lut
) ? state
->degamma_lut
->base
.id
: 0;
541 else if (property
== config
->ctm_property
)
542 *val
= (state
->ctm
) ? state
->ctm
->base
.id
: 0;
543 else if (property
== config
->gamma_lut_property
)
544 *val
= (state
->gamma_lut
) ? state
->gamma_lut
->base
.id
: 0;
545 else if (property
== config
->prop_out_fence_ptr
)
547 else if (crtc
->funcs
->atomic_get_property
)
548 return crtc
->funcs
->atomic_get_property(crtc
, state
, property
, val
);
556 * drm_atomic_crtc_check - check crtc state
557 * @crtc: crtc to check
558 * @state: crtc state to check
560 * Provides core sanity checks for crtc state.
563 * Zero on success, error code on failure
565 static int drm_atomic_crtc_check(struct drm_crtc
*crtc
,
566 struct drm_crtc_state
*state
)
568 /* NOTE: we explicitly don't enforce constraints such as primary
569 * layer covering entire screen, since that is something we want
570 * to allow (on hw that supports it). For hw that does not, it
571 * should be checked in driver's crtc->atomic_check() vfunc.
573 * TODO: Add generic modeset state checks once we support those.
576 if (state
->active
&& !state
->enable
) {
577 DRM_DEBUG_ATOMIC("[CRTC:%d:%s] active without enabled\n",
578 crtc
->base
.id
, crtc
->name
);
582 /* The state->enable vs. state->mode_blob checks can be WARN_ON,
583 * as this is a kernel-internal detail that userspace should never
584 * be able to trigger. */
585 if (drm_core_check_feature(crtc
->dev
, DRIVER_ATOMIC
) &&
586 WARN_ON(state
->enable
&& !state
->mode_blob
)) {
587 DRM_DEBUG_ATOMIC("[CRTC:%d:%s] enabled without mode blob\n",
588 crtc
->base
.id
, crtc
->name
);
592 if (drm_core_check_feature(crtc
->dev
, DRIVER_ATOMIC
) &&
593 WARN_ON(!state
->enable
&& state
->mode_blob
)) {
594 DRM_DEBUG_ATOMIC("[CRTC:%d:%s] disabled with mode blob\n",
595 crtc
->base
.id
, crtc
->name
);
600 * Reject event generation for when a CRTC is off and stays off.
601 * It wouldn't be hard to implement this, but userspace has a track
602 * record of happily burning through 100% cpu (or worse, crash) when the
603 * display pipe is suspended. To avoid all that fun just reject updates
604 * that ask for events since likely that indicates a bug in the
605 * compositor's drawing loop. This is consistent with the vblank IOCTL
606 * and legacy page_flip IOCTL which also reject service on a disabled
609 if (state
->event
&& !state
->active
&& !crtc
->state
->active
) {
610 DRM_DEBUG_ATOMIC("[CRTC:%d:%s] requesting event but off\n",
611 crtc
->base
.id
, crtc
->name
);
618 static void drm_atomic_crtc_print_state(struct drm_printer
*p
,
619 const struct drm_crtc_state
*state
)
621 struct drm_crtc
*crtc
= state
->crtc
;
623 drm_printf(p
, "crtc[%u]: %s\n", crtc
->base
.id
, crtc
->name
);
624 drm_printf(p
, "\tenable=%d\n", state
->enable
);
625 drm_printf(p
, "\tactive=%d\n", state
->active
);
626 drm_printf(p
, "\tplanes_changed=%d\n", state
->planes_changed
);
627 drm_printf(p
, "\tmode_changed=%d\n", state
->mode_changed
);
628 drm_printf(p
, "\tactive_changed=%d\n", state
->active_changed
);
629 drm_printf(p
, "\tconnectors_changed=%d\n", state
->connectors_changed
);
630 drm_printf(p
, "\tcolor_mgmt_changed=%d\n", state
->color_mgmt_changed
);
631 drm_printf(p
, "\tplane_mask=%x\n", state
->plane_mask
);
632 drm_printf(p
, "\tconnector_mask=%x\n", state
->connector_mask
);
633 drm_printf(p
, "\tencoder_mask=%x\n", state
->encoder_mask
);
634 drm_printf(p
, "\tmode: " DRM_MODE_FMT
"\n", DRM_MODE_ARG(&state
->mode
));
636 if (crtc
->funcs
->atomic_print_state
)
637 crtc
->funcs
->atomic_print_state(p
, state
);
641 * drm_atomic_get_plane_state - get plane state
642 * @state: global atomic state object
643 * @plane: plane to get state object for
645 * This function returns the plane state for the given plane, allocating it if
646 * needed. It will also grab the relevant plane lock to make sure that the state
651 * Either the allocated state or the error code encoded into the pointer. When
652 * the error is EDEADLK then the w/w mutex code has detected a deadlock and the
653 * entire atomic sequence must be restarted. All other errors are fatal.
655 struct drm_plane_state
*
656 drm_atomic_get_plane_state(struct drm_atomic_state
*state
,
657 struct drm_plane
*plane
)
659 int ret
, index
= drm_plane_index(plane
);
660 struct drm_plane_state
*plane_state
;
662 WARN_ON(!state
->acquire_ctx
);
664 plane_state
= drm_atomic_get_existing_plane_state(state
, plane
);
668 ret
= drm_modeset_lock(&plane
->mutex
, state
->acquire_ctx
);
672 plane_state
= plane
->funcs
->atomic_duplicate_state(plane
);
674 return ERR_PTR(-ENOMEM
);
676 state
->planes
[index
].state
= plane_state
;
677 state
->planes
[index
].ptr
= plane
;
678 state
->planes
[index
].old_state
= plane
->state
;
679 state
->planes
[index
].new_state
= plane_state
;
680 plane_state
->state
= state
;
682 DRM_DEBUG_ATOMIC("Added [PLANE:%d:%s] %p state to %p\n",
683 plane
->base
.id
, plane
->name
, plane_state
, state
);
685 if (plane_state
->crtc
) {
686 struct drm_crtc_state
*crtc_state
;
688 crtc_state
= drm_atomic_get_crtc_state(state
,
690 if (IS_ERR(crtc_state
))
691 return ERR_CAST(crtc_state
);
696 EXPORT_SYMBOL(drm_atomic_get_plane_state
);
699 * drm_atomic_plane_set_property - set property on plane
700 * @plane: the drm plane to set a property on
701 * @state: the state object to update with the new property value
702 * @property: the property to set
703 * @val: the new property value
705 * This function handles generic/core properties and calls out to driver's
706 * &drm_plane_funcs.atomic_set_property for driver properties. To ensure
707 * consistent behavior you must call this function rather than the driver hook
711 * Zero on success, error code on failure
713 static int drm_atomic_plane_set_property(struct drm_plane
*plane
,
714 struct drm_plane_state
*state
, struct drm_property
*property
,
717 struct drm_device
*dev
= plane
->dev
;
718 struct drm_mode_config
*config
= &dev
->mode_config
;
720 if (property
== config
->prop_fb_id
) {
721 struct drm_framebuffer
*fb
= drm_framebuffer_lookup(dev
, val
);
722 drm_atomic_set_fb_for_plane(state
, fb
);
724 drm_framebuffer_put(fb
);
725 } else if (property
== config
->prop_in_fence_fd
) {
729 if (U642I64(val
) == -1)
732 state
->fence
= sync_file_get_fence(val
);
736 } else if (property
== config
->prop_crtc_id
) {
737 struct drm_crtc
*crtc
= drm_crtc_find(dev
, val
);
738 return drm_atomic_set_crtc_for_plane(state
, crtc
);
739 } else if (property
== config
->prop_crtc_x
) {
740 state
->crtc_x
= U642I64(val
);
741 } else if (property
== config
->prop_crtc_y
) {
742 state
->crtc_y
= U642I64(val
);
743 } else if (property
== config
->prop_crtc_w
) {
745 } else if (property
== config
->prop_crtc_h
) {
747 } else if (property
== config
->prop_src_x
) {
749 } else if (property
== config
->prop_src_y
) {
751 } else if (property
== config
->prop_src_w
) {
753 } else if (property
== config
->prop_src_h
) {
755 } else if (property
== plane
->rotation_property
) {
756 if (!is_power_of_2(val
& DRM_MODE_ROTATE_MASK
))
758 state
->rotation
= val
;
759 } else if (property
== plane
->zpos_property
) {
761 } else if (plane
->funcs
->atomic_set_property
) {
762 return plane
->funcs
->atomic_set_property(plane
, state
,
772 * drm_atomic_plane_get_property - get property value from plane state
773 * @plane: the drm plane to set a property on
774 * @state: the state object to get the property value from
775 * @property: the property to set
776 * @val: return location for the property value
778 * This function handles generic/core properties and calls out to driver's
779 * &drm_plane_funcs.atomic_get_property for driver properties. To ensure
780 * consistent behavior you must call this function rather than the driver hook
784 * Zero on success, error code on failure
787 drm_atomic_plane_get_property(struct drm_plane
*plane
,
788 const struct drm_plane_state
*state
,
789 struct drm_property
*property
, uint64_t *val
)
791 struct drm_device
*dev
= plane
->dev
;
792 struct drm_mode_config
*config
= &dev
->mode_config
;
794 if (property
== config
->prop_fb_id
) {
795 *val
= (state
->fb
) ? state
->fb
->base
.id
: 0;
796 } else if (property
== config
->prop_in_fence_fd
) {
798 } else if (property
== config
->prop_crtc_id
) {
799 *val
= (state
->crtc
) ? state
->crtc
->base
.id
: 0;
800 } else if (property
== config
->prop_crtc_x
) {
801 *val
= I642U64(state
->crtc_x
);
802 } else if (property
== config
->prop_crtc_y
) {
803 *val
= I642U64(state
->crtc_y
);
804 } else if (property
== config
->prop_crtc_w
) {
805 *val
= state
->crtc_w
;
806 } else if (property
== config
->prop_crtc_h
) {
807 *val
= state
->crtc_h
;
808 } else if (property
== config
->prop_src_x
) {
810 } else if (property
== config
->prop_src_y
) {
812 } else if (property
== config
->prop_src_w
) {
814 } else if (property
== config
->prop_src_h
) {
816 } else if (property
== plane
->rotation_property
) {
817 *val
= state
->rotation
;
818 } else if (property
== plane
->zpos_property
) {
820 } else if (plane
->funcs
->atomic_get_property
) {
821 return plane
->funcs
->atomic_get_property(plane
, state
, property
, val
);
830 plane_switching_crtc(struct drm_atomic_state
*state
,
831 struct drm_plane
*plane
,
832 struct drm_plane_state
*plane_state
)
834 if (!plane
->state
->crtc
|| !plane_state
->crtc
)
837 if (plane
->state
->crtc
== plane_state
->crtc
)
840 /* This could be refined, but currently there's no helper or driver code
841 * to implement direct switching of active planes nor userspace to take
842 * advantage of more direct plane switching without the intermediate
849 * drm_atomic_plane_check - check plane state
850 * @plane: plane to check
851 * @state: plane state to check
853 * Provides core sanity checks for plane state.
856 * Zero on success, error code on failure
858 static int drm_atomic_plane_check(struct drm_plane
*plane
,
859 struct drm_plane_state
*state
)
861 unsigned int fb_width
, fb_height
;
864 /* either *both* CRTC and FB must be set, or neither */
865 if (WARN_ON(state
->crtc
&& !state
->fb
)) {
866 DRM_DEBUG_ATOMIC("CRTC set but no FB\n");
868 } else if (WARN_ON(state
->fb
&& !state
->crtc
)) {
869 DRM_DEBUG_ATOMIC("FB set but no CRTC\n");
873 /* if disabled, we don't care about the rest of the state: */
877 /* Check whether this plane is usable on this CRTC */
878 if (!(plane
->possible_crtcs
& drm_crtc_mask(state
->crtc
))) {
879 DRM_DEBUG_ATOMIC("Invalid crtc for plane\n");
883 /* Check whether this plane supports the fb pixel format. */
884 ret
= drm_plane_check_pixel_format(plane
, state
->fb
->format
->format
);
886 struct drm_format_name_buf format_name
;
887 DRM_DEBUG_ATOMIC("Invalid pixel format %s\n",
888 drm_get_format_name(state
->fb
->format
->format
,
893 /* Give drivers some help against integer overflows */
894 if (state
->crtc_w
> INT_MAX
||
895 state
->crtc_x
> INT_MAX
- (int32_t) state
->crtc_w
||
896 state
->crtc_h
> INT_MAX
||
897 state
->crtc_y
> INT_MAX
- (int32_t) state
->crtc_h
) {
898 DRM_DEBUG_ATOMIC("Invalid CRTC coordinates %ux%u+%d+%d\n",
899 state
->crtc_w
, state
->crtc_h
,
900 state
->crtc_x
, state
->crtc_y
);
904 fb_width
= state
->fb
->width
<< 16;
905 fb_height
= state
->fb
->height
<< 16;
907 /* Make sure source coordinates are inside the fb. */
908 if (state
->src_w
> fb_width
||
909 state
->src_x
> fb_width
- state
->src_w
||
910 state
->src_h
> fb_height
||
911 state
->src_y
> fb_height
- state
->src_h
) {
912 DRM_DEBUG_ATOMIC("Invalid source coordinates "
913 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
914 state
->src_w
>> 16, ((state
->src_w
& 0xffff) * 15625) >> 10,
915 state
->src_h
>> 16, ((state
->src_h
& 0xffff) * 15625) >> 10,
916 state
->src_x
>> 16, ((state
->src_x
& 0xffff) * 15625) >> 10,
917 state
->src_y
>> 16, ((state
->src_y
& 0xffff) * 15625) >> 10);
921 if (plane_switching_crtc(state
->state
, plane
, state
)) {
922 DRM_DEBUG_ATOMIC("[PLANE:%d:%s] switching CRTC directly\n",
923 plane
->base
.id
, plane
->name
);
930 static void drm_atomic_plane_print_state(struct drm_printer
*p
,
931 const struct drm_plane_state
*state
)
933 struct drm_plane
*plane
= state
->plane
;
934 struct drm_rect src
= drm_plane_state_src(state
);
935 struct drm_rect dest
= drm_plane_state_dest(state
);
937 drm_printf(p
, "plane[%u]: %s\n", plane
->base
.id
, plane
->name
);
938 drm_printf(p
, "\tcrtc=%s\n", state
->crtc
? state
->crtc
->name
: "(null)");
939 drm_printf(p
, "\tfb=%u\n", state
->fb
? state
->fb
->base
.id
: 0);
941 struct drm_framebuffer
*fb
= state
->fb
;
942 int i
, n
= fb
->format
->num_planes
;
943 struct drm_format_name_buf format_name
;
945 drm_printf(p
, "\t\tformat=%s\n",
946 drm_get_format_name(fb
->format
->format
, &format_name
));
947 drm_printf(p
, "\t\t\tmodifier=0x%llx\n", fb
->modifier
);
948 drm_printf(p
, "\t\tsize=%dx%d\n", fb
->width
, fb
->height
);
949 drm_printf(p
, "\t\tlayers:\n");
950 for (i
= 0; i
< n
; i
++) {
951 drm_printf(p
, "\t\t\tpitch[%d]=%u\n", i
, fb
->pitches
[i
]);
952 drm_printf(p
, "\t\t\toffset[%d]=%u\n", i
, fb
->offsets
[i
]);
955 drm_printf(p
, "\tcrtc-pos=" DRM_RECT_FMT
"\n", DRM_RECT_ARG(&dest
));
956 drm_printf(p
, "\tsrc-pos=" DRM_RECT_FP_FMT
"\n", DRM_RECT_FP_ARG(&src
));
957 drm_printf(p
, "\trotation=%x\n", state
->rotation
);
959 if (plane
->funcs
->atomic_print_state
)
960 plane
->funcs
->atomic_print_state(p
, state
);
964 * drm_atomic_private_obj_init - initialize private object
965 * @obj: private object
966 * @state: initial private object state
967 * @funcs: pointer to the struct of function pointers that identify the object
970 * Initialize the private object, which can be embedded into any
971 * driver private object that needs its own atomic state.
974 drm_atomic_private_obj_init(struct drm_private_obj
*obj
,
975 struct drm_private_state
*state
,
976 const struct drm_private_state_funcs
*funcs
)
978 memset(obj
, 0, sizeof(*obj
));
983 EXPORT_SYMBOL(drm_atomic_private_obj_init
);
986 * drm_atomic_private_obj_fini - finalize private object
987 * @obj: private object
989 * Finalize the private object.
992 drm_atomic_private_obj_fini(struct drm_private_obj
*obj
)
994 obj
->funcs
->atomic_destroy_state(obj
, obj
->state
);
996 EXPORT_SYMBOL(drm_atomic_private_obj_fini
);
999 * drm_atomic_get_private_obj_state - get private object state
1000 * @state: global atomic state
1001 * @obj: private object to get the state for
1003 * This function returns the private object state for the given private object,
1004 * allocating the state if needed. It does not grab any locks as the caller is
1005 * expected to care of any required locking.
1009 * Either the allocated state or the error code encoded into a pointer.
1011 struct drm_private_state
*
1012 drm_atomic_get_private_obj_state(struct drm_atomic_state
*state
,
1013 struct drm_private_obj
*obj
)
1015 int index
, num_objs
, i
;
1017 struct __drm_private_objs_state
*arr
;
1018 struct drm_private_state
*obj_state
;
1020 for (i
= 0; i
< state
->num_private_objs
; i
++)
1021 if (obj
== state
->private_objs
[i
].ptr
)
1022 return state
->private_objs
[i
].state
;
1024 num_objs
= state
->num_private_objs
+ 1;
1025 size
= sizeof(*state
->private_objs
) * num_objs
;
1026 arr
= krealloc(state
->private_objs
, size
, GFP_KERNEL
);
1028 return ERR_PTR(-ENOMEM
);
1030 state
->private_objs
= arr
;
1031 index
= state
->num_private_objs
;
1032 memset(&state
->private_objs
[index
], 0, sizeof(*state
->private_objs
));
1034 obj_state
= obj
->funcs
->atomic_duplicate_state(obj
);
1036 return ERR_PTR(-ENOMEM
);
1038 state
->private_objs
[index
].state
= obj_state
;
1039 state
->private_objs
[index
].old_state
= obj
->state
;
1040 state
->private_objs
[index
].new_state
= obj_state
;
1041 state
->private_objs
[index
].ptr
= obj
;
1043 state
->num_private_objs
= num_objs
;
1045 DRM_DEBUG_ATOMIC("Added new private object %p state %p to %p\n",
1046 obj
, obj_state
, state
);
1050 EXPORT_SYMBOL(drm_atomic_get_private_obj_state
);
1053 * drm_atomic_get_connector_state - get connector state
1054 * @state: global atomic state object
1055 * @connector: connector to get state object for
1057 * This function returns the connector state for the given connector,
1058 * allocating it if needed. It will also grab the relevant connector lock to
1059 * make sure that the state is consistent.
1063 * Either the allocated state or the error code encoded into the pointer. When
1064 * the error is EDEADLK then the w/w mutex code has detected a deadlock and the
1065 * entire atomic sequence must be restarted. All other errors are fatal.
1067 struct drm_connector_state
*
1068 drm_atomic_get_connector_state(struct drm_atomic_state
*state
,
1069 struct drm_connector
*connector
)
1072 struct drm_mode_config
*config
= &connector
->dev
->mode_config
;
1073 struct drm_connector_state
*connector_state
;
1075 WARN_ON(!state
->acquire_ctx
);
1077 ret
= drm_modeset_lock(&config
->connection_mutex
, state
->acquire_ctx
);
1079 return ERR_PTR(ret
);
1081 index
= drm_connector_index(connector
);
1083 if (index
>= state
->num_connector
) {
1084 struct __drm_connnectors_state
*c
;
1085 int alloc
= max(index
+ 1, config
->num_connector
);
1087 c
= krealloc(state
->connectors
, alloc
* sizeof(*state
->connectors
), GFP_KERNEL
);
1089 return ERR_PTR(-ENOMEM
);
1091 state
->connectors
= c
;
1092 memset(&state
->connectors
[state
->num_connector
], 0,
1093 sizeof(*state
->connectors
) * (alloc
- state
->num_connector
));
1095 state
->num_connector
= alloc
;
1098 if (state
->connectors
[index
].state
)
1099 return state
->connectors
[index
].state
;
1101 connector_state
= connector
->funcs
->atomic_duplicate_state(connector
);
1102 if (!connector_state
)
1103 return ERR_PTR(-ENOMEM
);
1105 drm_connector_get(connector
);
1106 state
->connectors
[index
].state
= connector_state
;
1107 state
->connectors
[index
].old_state
= connector
->state
;
1108 state
->connectors
[index
].new_state
= connector_state
;
1109 state
->connectors
[index
].ptr
= connector
;
1110 connector_state
->state
= state
;
1112 DRM_DEBUG_ATOMIC("Added [CONNECTOR:%d:%s] %p state to %p\n",
1113 connector
->base
.id
, connector
->name
,
1114 connector_state
, state
);
1116 if (connector_state
->crtc
) {
1117 struct drm_crtc_state
*crtc_state
;
1119 crtc_state
= drm_atomic_get_crtc_state(state
,
1120 connector_state
->crtc
);
1121 if (IS_ERR(crtc_state
))
1122 return ERR_CAST(crtc_state
);
1125 return connector_state
;
1127 EXPORT_SYMBOL(drm_atomic_get_connector_state
);
1130 * drm_atomic_connector_set_property - set property on connector.
1131 * @connector: the drm connector to set a property on
1132 * @state: the state object to update with the new property value
1133 * @property: the property to set
1134 * @val: the new property value
1136 * This function handles generic/core properties and calls out to driver's
1137 * &drm_connector_funcs.atomic_set_property for driver properties. To ensure
1138 * consistent behavior you must call this function rather than the driver hook
1142 * Zero on success, error code on failure
1144 static int drm_atomic_connector_set_property(struct drm_connector
*connector
,
1145 struct drm_connector_state
*state
, struct drm_property
*property
,
1148 struct drm_device
*dev
= connector
->dev
;
1149 struct drm_mode_config
*config
= &dev
->mode_config
;
1151 if (property
== config
->prop_crtc_id
) {
1152 struct drm_crtc
*crtc
= drm_crtc_find(dev
, val
);
1153 return drm_atomic_set_crtc_for_connector(state
, crtc
);
1154 } else if (property
== config
->dpms_property
) {
1155 /* setting DPMS property requires special handling, which
1156 * is done in legacy setprop path for us. Disallow (for
1157 * now?) atomic writes to DPMS property:
1160 } else if (property
== config
->tv_select_subconnector_property
) {
1161 state
->tv
.subconnector
= val
;
1162 } else if (property
== config
->tv_left_margin_property
) {
1163 state
->tv
.margins
.left
= val
;
1164 } else if (property
== config
->tv_right_margin_property
) {
1165 state
->tv
.margins
.right
= val
;
1166 } else if (property
== config
->tv_top_margin_property
) {
1167 state
->tv
.margins
.top
= val
;
1168 } else if (property
== config
->tv_bottom_margin_property
) {
1169 state
->tv
.margins
.bottom
= val
;
1170 } else if (property
== config
->tv_mode_property
) {
1171 state
->tv
.mode
= val
;
1172 } else if (property
== config
->tv_brightness_property
) {
1173 state
->tv
.brightness
= val
;
1174 } else if (property
== config
->tv_contrast_property
) {
1175 state
->tv
.contrast
= val
;
1176 } else if (property
== config
->tv_flicker_reduction_property
) {
1177 state
->tv
.flicker_reduction
= val
;
1178 } else if (property
== config
->tv_overscan_property
) {
1179 state
->tv
.overscan
= val
;
1180 } else if (property
== config
->tv_saturation_property
) {
1181 state
->tv
.saturation
= val
;
1182 } else if (property
== config
->tv_hue_property
) {
1183 state
->tv
.hue
= val
;
1184 } else if (property
== config
->link_status_property
) {
1185 /* Never downgrade from GOOD to BAD on userspace's request here,
1186 * only hw issues can do that.
1188 * For an atomic property the userspace doesn't need to be able
1189 * to understand all the properties, but needs to be able to
1190 * restore the state it wants on VT switch. So if the userspace
1191 * tries to change the link_status from GOOD to BAD, driver
1192 * silently rejects it and returns a 0. This prevents userspace
1193 * from accidently breaking the display when it restores the
1196 if (state
->link_status
!= DRM_LINK_STATUS_GOOD
)
1197 state
->link_status
= val
;
1198 } else if (property
== config
->aspect_ratio_property
) {
1199 state
->picture_aspect_ratio
= val
;
1200 } else if (property
== connector
->scaling_mode_property
) {
1201 state
->scaling_mode
= val
;
1202 } else if (connector
->funcs
->atomic_set_property
) {
1203 return connector
->funcs
->atomic_set_property(connector
,
1204 state
, property
, val
);
1212 static void drm_atomic_connector_print_state(struct drm_printer
*p
,
1213 const struct drm_connector_state
*state
)
1215 struct drm_connector
*connector
= state
->connector
;
1217 drm_printf(p
, "connector[%u]: %s\n", connector
->base
.id
, connector
->name
);
1218 drm_printf(p
, "\tcrtc=%s\n", state
->crtc
? state
->crtc
->name
: "(null)");
1220 if (connector
->funcs
->atomic_print_state
)
1221 connector
->funcs
->atomic_print_state(p
, state
);
1225 * drm_atomic_connector_get_property - get property value from connector state
1226 * @connector: the drm connector to set a property on
1227 * @state: the state object to get the property value from
1228 * @property: the property to set
1229 * @val: return location for the property value
1231 * This function handles generic/core properties and calls out to driver's
1232 * &drm_connector_funcs.atomic_get_property for driver properties. To ensure
1233 * consistent behavior you must call this function rather than the driver hook
1237 * Zero on success, error code on failure
1240 drm_atomic_connector_get_property(struct drm_connector
*connector
,
1241 const struct drm_connector_state
*state
,
1242 struct drm_property
*property
, uint64_t *val
)
1244 struct drm_device
*dev
= connector
->dev
;
1245 struct drm_mode_config
*config
= &dev
->mode_config
;
1247 if (property
== config
->prop_crtc_id
) {
1248 *val
= (state
->crtc
) ? state
->crtc
->base
.id
: 0;
1249 } else if (property
== config
->dpms_property
) {
1250 *val
= connector
->dpms
;
1251 } else if (property
== config
->tv_select_subconnector_property
) {
1252 *val
= state
->tv
.subconnector
;
1253 } else if (property
== config
->tv_left_margin_property
) {
1254 *val
= state
->tv
.margins
.left
;
1255 } else if (property
== config
->tv_right_margin_property
) {
1256 *val
= state
->tv
.margins
.right
;
1257 } else if (property
== config
->tv_top_margin_property
) {
1258 *val
= state
->tv
.margins
.top
;
1259 } else if (property
== config
->tv_bottom_margin_property
) {
1260 *val
= state
->tv
.margins
.bottom
;
1261 } else if (property
== config
->tv_mode_property
) {
1262 *val
= state
->tv
.mode
;
1263 } else if (property
== config
->tv_brightness_property
) {
1264 *val
= state
->tv
.brightness
;
1265 } else if (property
== config
->tv_contrast_property
) {
1266 *val
= state
->tv
.contrast
;
1267 } else if (property
== config
->tv_flicker_reduction_property
) {
1268 *val
= state
->tv
.flicker_reduction
;
1269 } else if (property
== config
->tv_overscan_property
) {
1270 *val
= state
->tv
.overscan
;
1271 } else if (property
== config
->tv_saturation_property
) {
1272 *val
= state
->tv
.saturation
;
1273 } else if (property
== config
->tv_hue_property
) {
1274 *val
= state
->tv
.hue
;
1275 } else if (property
== config
->link_status_property
) {
1276 *val
= state
->link_status
;
1277 } else if (property
== config
->aspect_ratio_property
) {
1278 *val
= state
->picture_aspect_ratio
;
1279 } else if (property
== connector
->scaling_mode_property
) {
1280 *val
= state
->scaling_mode
;
1281 } else if (connector
->funcs
->atomic_get_property
) {
1282 return connector
->funcs
->atomic_get_property(connector
,
1283 state
, property
, val
);
1291 int drm_atomic_get_property(struct drm_mode_object
*obj
,
1292 struct drm_property
*property
, uint64_t *val
)
1294 struct drm_device
*dev
= property
->dev
;
1297 switch (obj
->type
) {
1298 case DRM_MODE_OBJECT_CONNECTOR
: {
1299 struct drm_connector
*connector
= obj_to_connector(obj
);
1300 WARN_ON(!drm_modeset_is_locked(&dev
->mode_config
.connection_mutex
));
1301 ret
= drm_atomic_connector_get_property(connector
,
1302 connector
->state
, property
, val
);
1305 case DRM_MODE_OBJECT_CRTC
: {
1306 struct drm_crtc
*crtc
= obj_to_crtc(obj
);
1307 WARN_ON(!drm_modeset_is_locked(&crtc
->mutex
));
1308 ret
= drm_atomic_crtc_get_property(crtc
,
1309 crtc
->state
, property
, val
);
1312 case DRM_MODE_OBJECT_PLANE
: {
1313 struct drm_plane
*plane
= obj_to_plane(obj
);
1314 WARN_ON(!drm_modeset_is_locked(&plane
->mutex
));
1315 ret
= drm_atomic_plane_get_property(plane
,
1316 plane
->state
, property
, val
);
1328 * drm_atomic_set_crtc_for_plane - set crtc for plane
1329 * @plane_state: the plane whose incoming state to update
1330 * @crtc: crtc to use for the plane
1332 * Changing the assigned crtc for a plane requires us to grab the lock and state
1333 * for the new crtc, as needed. This function takes care of all these details
1334 * besides updating the pointer in the state object itself.
1337 * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK
1338 * then the w/w mutex code has detected a deadlock and the entire atomic
1339 * sequence must be restarted. All other errors are fatal.
1342 drm_atomic_set_crtc_for_plane(struct drm_plane_state
*plane_state
,
1343 struct drm_crtc
*crtc
)
1345 struct drm_plane
*plane
= plane_state
->plane
;
1346 struct drm_crtc_state
*crtc_state
;
1348 if (plane_state
->crtc
) {
1349 crtc_state
= drm_atomic_get_crtc_state(plane_state
->state
,
1351 if (WARN_ON(IS_ERR(crtc_state
)))
1352 return PTR_ERR(crtc_state
);
1354 crtc_state
->plane_mask
&= ~(1 << drm_plane_index(plane
));
1357 plane_state
->crtc
= crtc
;
1360 crtc_state
= drm_atomic_get_crtc_state(plane_state
->state
,
1362 if (IS_ERR(crtc_state
))
1363 return PTR_ERR(crtc_state
);
1364 crtc_state
->plane_mask
|= (1 << drm_plane_index(plane
));
1368 DRM_DEBUG_ATOMIC("Link plane state %p to [CRTC:%d:%s]\n",
1369 plane_state
, crtc
->base
.id
, crtc
->name
);
1371 DRM_DEBUG_ATOMIC("Link plane state %p to [NOCRTC]\n",
1376 EXPORT_SYMBOL(drm_atomic_set_crtc_for_plane
);
1379 * drm_atomic_set_fb_for_plane - set framebuffer for plane
1380 * @plane_state: atomic state object for the plane
1381 * @fb: fb to use for the plane
1383 * Changing the assigned framebuffer for a plane requires us to grab a reference
1384 * to the new fb and drop the reference to the old fb, if there is one. This
1385 * function takes care of all these details besides updating the pointer in the
1386 * state object itself.
1389 drm_atomic_set_fb_for_plane(struct drm_plane_state
*plane_state
,
1390 struct drm_framebuffer
*fb
)
1393 DRM_DEBUG_ATOMIC("Set [FB:%d] for plane state %p\n",
1394 fb
->base
.id
, plane_state
);
1396 DRM_DEBUG_ATOMIC("Set [NOFB] for plane state %p\n",
1399 drm_framebuffer_assign(&plane_state
->fb
, fb
);
1401 EXPORT_SYMBOL(drm_atomic_set_fb_for_plane
);
1404 * drm_atomic_set_fence_for_plane - set fence for plane
1405 * @plane_state: atomic state object for the plane
1406 * @fence: dma_fence to use for the plane
1408 * Helper to setup the plane_state fence in case it is not set yet.
1409 * By using this drivers doesn't need to worry if the user choose
1410 * implicit or explicit fencing.
1412 * This function will not set the fence to the state if it was set
1413 * via explicit fencing interfaces on the atomic ioctl. In that case it will
1414 * drop the reference to the fence as we are not storing it anywhere.
1415 * Otherwise, if &drm_plane_state.fence is not set this function we just set it
1416 * with the received implicit fence. In both cases this function consumes a
1417 * reference for @fence.
1420 drm_atomic_set_fence_for_plane(struct drm_plane_state
*plane_state
,
1421 struct dma_fence
*fence
)
1423 if (plane_state
->fence
) {
1424 dma_fence_put(fence
);
1428 plane_state
->fence
= fence
;
1430 EXPORT_SYMBOL(drm_atomic_set_fence_for_plane
);
1433 * drm_atomic_set_crtc_for_connector - set crtc for connector
1434 * @conn_state: atomic state object for the connector
1435 * @crtc: crtc to use for the connector
1437 * Changing the assigned crtc for a connector requires us to grab the lock and
1438 * state for the new crtc, as needed. This function takes care of all these
1439 * details besides updating the pointer in the state object itself.
1442 * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK
1443 * then the w/w mutex code has detected a deadlock and the entire atomic
1444 * sequence must be restarted. All other errors are fatal.
1447 drm_atomic_set_crtc_for_connector(struct drm_connector_state
*conn_state
,
1448 struct drm_crtc
*crtc
)
1450 struct drm_crtc_state
*crtc_state
;
1452 if (conn_state
->crtc
== crtc
)
1455 if (conn_state
->crtc
) {
1456 crtc_state
= drm_atomic_get_new_crtc_state(conn_state
->state
,
1459 crtc_state
->connector_mask
&=
1460 ~(1 << drm_connector_index(conn_state
->connector
));
1462 drm_connector_put(conn_state
->connector
);
1463 conn_state
->crtc
= NULL
;
1467 crtc_state
= drm_atomic_get_crtc_state(conn_state
->state
, crtc
);
1468 if (IS_ERR(crtc_state
))
1469 return PTR_ERR(crtc_state
);
1471 crtc_state
->connector_mask
|=
1472 1 << drm_connector_index(conn_state
->connector
);
1474 drm_connector_get(conn_state
->connector
);
1475 conn_state
->crtc
= crtc
;
1477 DRM_DEBUG_ATOMIC("Link connector state %p to [CRTC:%d:%s]\n",
1478 conn_state
, crtc
->base
.id
, crtc
->name
);
1480 DRM_DEBUG_ATOMIC("Link connector state %p to [NOCRTC]\n",
1486 EXPORT_SYMBOL(drm_atomic_set_crtc_for_connector
);
1489 * drm_atomic_add_affected_connectors - add connectors for crtc
1490 * @state: atomic state
1493 * This function walks the current configuration and adds all connectors
1494 * currently using @crtc to the atomic configuration @state. Note that this
1495 * function must acquire the connection mutex. This can potentially cause
1496 * unneeded seralization if the update is just for the planes on one crtc. Hence
1497 * drivers and helpers should only call this when really needed (e.g. when a
1498 * full modeset needs to happen due to some change).
1501 * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK
1502 * then the w/w mutex code has detected a deadlock and the entire atomic
1503 * sequence must be restarted. All other errors are fatal.
1506 drm_atomic_add_affected_connectors(struct drm_atomic_state
*state
,
1507 struct drm_crtc
*crtc
)
1509 struct drm_mode_config
*config
= &state
->dev
->mode_config
;
1510 struct drm_connector
*connector
;
1511 struct drm_connector_state
*conn_state
;
1512 struct drm_connector_list_iter conn_iter
;
1513 struct drm_crtc_state
*crtc_state
;
1516 crtc_state
= drm_atomic_get_crtc_state(state
, crtc
);
1517 if (IS_ERR(crtc_state
))
1518 return PTR_ERR(crtc_state
);
1520 ret
= drm_modeset_lock(&config
->connection_mutex
, state
->acquire_ctx
);
1524 DRM_DEBUG_ATOMIC("Adding all current connectors for [CRTC:%d:%s] to %p\n",
1525 crtc
->base
.id
, crtc
->name
, state
);
1528 * Changed connectors are already in @state, so only need to look
1529 * at the connector_mask in crtc_state.
1531 drm_connector_list_iter_begin(state
->dev
, &conn_iter
);
1532 drm_for_each_connector_iter(connector
, &conn_iter
) {
1533 if (!(crtc_state
->connector_mask
& (1 << drm_connector_index(connector
))))
1536 conn_state
= drm_atomic_get_connector_state(state
, connector
);
1537 if (IS_ERR(conn_state
)) {
1538 drm_connector_list_iter_end(&conn_iter
);
1539 return PTR_ERR(conn_state
);
1542 drm_connector_list_iter_end(&conn_iter
);
1546 EXPORT_SYMBOL(drm_atomic_add_affected_connectors
);
1549 * drm_atomic_add_affected_planes - add planes for crtc
1550 * @state: atomic state
1553 * This function walks the current configuration and adds all planes
1554 * currently used by @crtc to the atomic configuration @state. This is useful
1555 * when an atomic commit also needs to check all currently enabled plane on
1556 * @crtc, e.g. when changing the mode. It's also useful when re-enabling a CRTC
1557 * to avoid special code to force-enable all planes.
1559 * Since acquiring a plane state will always also acquire the w/w mutex of the
1560 * current CRTC for that plane (if there is any) adding all the plane states for
1561 * a CRTC will not reduce parallism of atomic updates.
1564 * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK
1565 * then the w/w mutex code has detected a deadlock and the entire atomic
1566 * sequence must be restarted. All other errors are fatal.
1569 drm_atomic_add_affected_planes(struct drm_atomic_state
*state
,
1570 struct drm_crtc
*crtc
)
1572 struct drm_plane
*plane
;
1574 WARN_ON(!drm_atomic_get_new_crtc_state(state
, crtc
));
1576 drm_for_each_plane_mask(plane
, state
->dev
, crtc
->state
->plane_mask
) {
1577 struct drm_plane_state
*plane_state
=
1578 drm_atomic_get_plane_state(state
, plane
);
1580 if (IS_ERR(plane_state
))
1581 return PTR_ERR(plane_state
);
1585 EXPORT_SYMBOL(drm_atomic_add_affected_planes
);
1588 * drm_atomic_check_only - check whether a given config would work
1589 * @state: atomic configuration to check
1591 * Note that this function can return -EDEADLK if the driver needed to acquire
1592 * more locks but encountered a deadlock. The caller must then do the usual w/w
1593 * backoff dance and restart. All other errors are fatal.
1596 * 0 on success, negative error code on failure.
1598 int drm_atomic_check_only(struct drm_atomic_state
*state
)
1600 struct drm_device
*dev
= state
->dev
;
1601 struct drm_mode_config
*config
= &dev
->mode_config
;
1602 struct drm_plane
*plane
;
1603 struct drm_plane_state
*plane_state
;
1604 struct drm_crtc
*crtc
;
1605 struct drm_crtc_state
*crtc_state
;
1608 DRM_DEBUG_ATOMIC("checking %p\n", state
);
1610 for_each_new_plane_in_state(state
, plane
, plane_state
, i
) {
1611 ret
= drm_atomic_plane_check(plane
, plane_state
);
1613 DRM_DEBUG_ATOMIC("[PLANE:%d:%s] atomic core check failed\n",
1614 plane
->base
.id
, plane
->name
);
1619 for_each_new_crtc_in_state(state
, crtc
, crtc_state
, i
) {
1620 ret
= drm_atomic_crtc_check(crtc
, crtc_state
);
1622 DRM_DEBUG_ATOMIC("[CRTC:%d:%s] atomic core check failed\n",
1623 crtc
->base
.id
, crtc
->name
);
1628 if (config
->funcs
->atomic_check
)
1629 ret
= config
->funcs
->atomic_check(state
->dev
, state
);
1631 if (!state
->allow_modeset
) {
1632 for_each_new_crtc_in_state(state
, crtc
, crtc_state
, i
) {
1633 if (drm_atomic_crtc_needs_modeset(crtc_state
)) {
1634 DRM_DEBUG_ATOMIC("[CRTC:%d:%s] requires full modeset\n",
1635 crtc
->base
.id
, crtc
->name
);
1643 EXPORT_SYMBOL(drm_atomic_check_only
);
1646 * drm_atomic_commit - commit configuration atomically
1647 * @state: atomic configuration to check
1649 * Note that this function can return -EDEADLK if the driver needed to acquire
1650 * more locks but encountered a deadlock. The caller must then do the usual w/w
1651 * backoff dance and restart. All other errors are fatal.
1653 * This function will take its own reference on @state.
1654 * Callers should always release their reference with drm_atomic_state_put().
1657 * 0 on success, negative error code on failure.
1659 int drm_atomic_commit(struct drm_atomic_state
*state
)
1661 struct drm_mode_config
*config
= &state
->dev
->mode_config
;
1664 ret
= drm_atomic_check_only(state
);
1668 DRM_DEBUG_ATOMIC("committing %p\n", state
);
1670 return config
->funcs
->atomic_commit(state
->dev
, state
, false);
1672 EXPORT_SYMBOL(drm_atomic_commit
);
1675 * drm_atomic_nonblocking_commit - atomic nonblocking commit
1676 * @state: atomic configuration to check
1678 * Note that this function can return -EDEADLK if the driver needed to acquire
1679 * more locks but encountered a deadlock. The caller must then do the usual w/w
1680 * backoff dance and restart. All other errors are fatal.
1682 * This function will take its own reference on @state.
1683 * Callers should always release their reference with drm_atomic_state_put().
1686 * 0 on success, negative error code on failure.
1688 int drm_atomic_nonblocking_commit(struct drm_atomic_state
*state
)
1690 struct drm_mode_config
*config
= &state
->dev
->mode_config
;
1693 ret
= drm_atomic_check_only(state
);
1697 DRM_DEBUG_ATOMIC("committing %p nonblocking\n", state
);
1699 return config
->funcs
->atomic_commit(state
->dev
, state
, true);
1701 EXPORT_SYMBOL(drm_atomic_nonblocking_commit
);
1703 static void drm_atomic_print_state(const struct drm_atomic_state
*state
)
1705 struct drm_printer p
= drm_info_printer(state
->dev
->dev
);
1706 struct drm_plane
*plane
;
1707 struct drm_plane_state
*plane_state
;
1708 struct drm_crtc
*crtc
;
1709 struct drm_crtc_state
*crtc_state
;
1710 struct drm_connector
*connector
;
1711 struct drm_connector_state
*connector_state
;
1714 DRM_DEBUG_ATOMIC("checking %p\n", state
);
1716 for_each_new_plane_in_state(state
, plane
, plane_state
, i
)
1717 drm_atomic_plane_print_state(&p
, plane_state
);
1719 for_each_new_crtc_in_state(state
, crtc
, crtc_state
, i
)
1720 drm_atomic_crtc_print_state(&p
, crtc_state
);
1722 for_each_new_connector_in_state(state
, connector
, connector_state
, i
)
1723 drm_atomic_connector_print_state(&p
, connector_state
);
1726 static void __drm_state_dump(struct drm_device
*dev
, struct drm_printer
*p
,
1729 struct drm_mode_config
*config
= &dev
->mode_config
;
1730 struct drm_plane
*plane
;
1731 struct drm_crtc
*crtc
;
1732 struct drm_connector
*connector
;
1733 struct drm_connector_list_iter conn_iter
;
1735 if (!drm_core_check_feature(dev
, DRIVER_ATOMIC
))
1738 list_for_each_entry(plane
, &config
->plane_list
, head
) {
1740 drm_modeset_lock(&plane
->mutex
, NULL
);
1741 drm_atomic_plane_print_state(p
, plane
->state
);
1743 drm_modeset_unlock(&plane
->mutex
);
1746 list_for_each_entry(crtc
, &config
->crtc_list
, head
) {
1748 drm_modeset_lock(&crtc
->mutex
, NULL
);
1749 drm_atomic_crtc_print_state(p
, crtc
->state
);
1751 drm_modeset_unlock(&crtc
->mutex
);
1754 drm_connector_list_iter_begin(dev
, &conn_iter
);
1756 drm_modeset_lock(&dev
->mode_config
.connection_mutex
, NULL
);
1757 drm_for_each_connector_iter(connector
, &conn_iter
)
1758 drm_atomic_connector_print_state(p
, connector
->state
);
1760 drm_modeset_unlock(&dev
->mode_config
.connection_mutex
);
1761 drm_connector_list_iter_end(&conn_iter
);
1765 * drm_state_dump - dump entire device atomic state
1766 * @dev: the drm device
1767 * @p: where to print the state to
1769 * Just for debugging. Drivers might want an option to dump state
1770 * to dmesg in case of error irq's. (Hint, you probably want to
1773 * The caller must drm_modeset_lock_all(), or if this is called
1774 * from error irq handler, it should not be enabled by default.
1775 * (Ie. if you are debugging errors you might not care that this
1776 * is racey. But calling this without all modeset locks held is
1777 * not inherently safe.)
1779 void drm_state_dump(struct drm_device
*dev
, struct drm_printer
*p
)
1781 __drm_state_dump(dev
, p
, false);
1783 EXPORT_SYMBOL(drm_state_dump
);
1785 #ifdef CONFIG_DEBUG_FS
1786 static int drm_state_info(struct seq_file
*m
, void *data
)
1788 struct drm_info_node
*node
= (struct drm_info_node
*) m
->private;
1789 struct drm_device
*dev
= node
->minor
->dev
;
1790 struct drm_printer p
= drm_seq_file_printer(m
);
1792 __drm_state_dump(dev
, &p
, true);
1797 /* any use in debugfs files to dump individual planes/crtc/etc? */
1798 static const struct drm_info_list drm_atomic_debugfs_list
[] = {
1799 {"state", drm_state_info
, 0},
1802 int drm_atomic_debugfs_init(struct drm_minor
*minor
)
1804 return drm_debugfs_create_files(drm_atomic_debugfs_list
,
1805 ARRAY_SIZE(drm_atomic_debugfs_list
),
1806 minor
->debugfs_root
, minor
);
1811 * The big monstor ioctl
1814 static struct drm_pending_vblank_event
*create_vblank_event(
1815 struct drm_device
*dev
, uint64_t user_data
)
1817 struct drm_pending_vblank_event
*e
= NULL
;
1819 e
= kzalloc(sizeof *e
, GFP_KERNEL
);
1823 e
->event
.base
.type
= DRM_EVENT_FLIP_COMPLETE
;
1824 e
->event
.base
.length
= sizeof(e
->event
);
1825 e
->event
.user_data
= user_data
;
1830 int drm_atomic_connector_commit_dpms(struct drm_atomic_state
*state
,
1831 struct drm_connector
*connector
,
1834 struct drm_connector
*tmp_connector
;
1835 struct drm_connector_state
*new_conn_state
;
1836 struct drm_crtc
*crtc
;
1837 struct drm_crtc_state
*crtc_state
;
1838 int i
, ret
, old_mode
= connector
->dpms
;
1839 bool active
= false;
1841 ret
= drm_modeset_lock(&state
->dev
->mode_config
.connection_mutex
,
1842 state
->acquire_ctx
);
1846 if (mode
!= DRM_MODE_DPMS_ON
)
1847 mode
= DRM_MODE_DPMS_OFF
;
1848 connector
->dpms
= mode
;
1850 crtc
= connector
->state
->crtc
;
1853 ret
= drm_atomic_add_affected_connectors(state
, crtc
);
1857 crtc_state
= drm_atomic_get_crtc_state(state
, crtc
);
1858 if (IS_ERR(crtc_state
)) {
1859 ret
= PTR_ERR(crtc_state
);
1863 for_each_new_connector_in_state(state
, tmp_connector
, new_conn_state
, i
) {
1864 if (new_conn_state
->crtc
!= crtc
)
1866 if (tmp_connector
->dpms
== DRM_MODE_DPMS_ON
) {
1872 crtc_state
->active
= active
;
1873 ret
= drm_atomic_commit(state
);
1876 connector
->dpms
= old_mode
;
1880 int drm_atomic_set_property(struct drm_atomic_state
*state
,
1881 struct drm_mode_object
*obj
,
1882 struct drm_property
*prop
,
1883 uint64_t prop_value
)
1885 struct drm_mode_object
*ref
;
1888 if (!drm_property_change_valid_get(prop
, prop_value
, &ref
))
1891 switch (obj
->type
) {
1892 case DRM_MODE_OBJECT_CONNECTOR
: {
1893 struct drm_connector
*connector
= obj_to_connector(obj
);
1894 struct drm_connector_state
*connector_state
;
1896 connector_state
= drm_atomic_get_connector_state(state
, connector
);
1897 if (IS_ERR(connector_state
)) {
1898 ret
= PTR_ERR(connector_state
);
1902 ret
= drm_atomic_connector_set_property(connector
,
1903 connector_state
, prop
, prop_value
);
1906 case DRM_MODE_OBJECT_CRTC
: {
1907 struct drm_crtc
*crtc
= obj_to_crtc(obj
);
1908 struct drm_crtc_state
*crtc_state
;
1910 crtc_state
= drm_atomic_get_crtc_state(state
, crtc
);
1911 if (IS_ERR(crtc_state
)) {
1912 ret
= PTR_ERR(crtc_state
);
1916 ret
= drm_atomic_crtc_set_property(crtc
,
1917 crtc_state
, prop
, prop_value
);
1920 case DRM_MODE_OBJECT_PLANE
: {
1921 struct drm_plane
*plane
= obj_to_plane(obj
);
1922 struct drm_plane_state
*plane_state
;
1924 plane_state
= drm_atomic_get_plane_state(state
, plane
);
1925 if (IS_ERR(plane_state
)) {
1926 ret
= PTR_ERR(plane_state
);
1930 ret
= drm_atomic_plane_set_property(plane
,
1931 plane_state
, prop
, prop_value
);
1939 drm_property_change_valid_put(prop
, ref
);
1944 * drm_atomic_clean_old_fb -- Unset old_fb pointers and set plane->fb pointers.
1946 * @dev: drm device to check.
1947 * @plane_mask: plane mask for planes that were updated.
1948 * @ret: return value, can be -EDEADLK for a retry.
1950 * Before doing an update &drm_plane.old_fb is set to &drm_plane.fb, but before
1951 * dropping the locks old_fb needs to be set to NULL and plane->fb updated. This
1952 * is a common operation for each atomic update, so this call is split off as a
1955 void drm_atomic_clean_old_fb(struct drm_device
*dev
,
1956 unsigned plane_mask
,
1959 struct drm_plane
*plane
;
1961 /* if succeeded, fixup legacy plane crtc/fb ptrs before dropping
1962 * locks (ie. while it is still safe to deref plane->state). We
1963 * need to do this here because the driver entry points cannot
1964 * distinguish between legacy and atomic ioctls.
1966 drm_for_each_plane_mask(plane
, dev
, plane_mask
) {
1968 struct drm_framebuffer
*new_fb
= plane
->state
->fb
;
1970 drm_framebuffer_get(new_fb
);
1972 plane
->crtc
= plane
->state
->crtc
;
1975 drm_framebuffer_put(plane
->old_fb
);
1977 plane
->old_fb
= NULL
;
1980 EXPORT_SYMBOL(drm_atomic_clean_old_fb
);
1983 * DOC: explicit fencing properties
1985 * Explicit fencing allows userspace to control the buffer synchronization
1986 * between devices. A Fence or a group of fences are transfered to/from
1987 * userspace using Sync File fds and there are two DRM properties for that.
1988 * IN_FENCE_FD on each DRM Plane to send fences to the kernel and
1989 * OUT_FENCE_PTR on each DRM CRTC to receive fences from the kernel.
1991 * As a contrast, with implicit fencing the kernel keeps track of any
1992 * ongoing rendering, and automatically ensures that the atomic update waits
1993 * for any pending rendering to complete. For shared buffers represented with
1994 * a &struct dma_buf this is tracked in &struct reservation_object.
1995 * Implicit syncing is how Linux traditionally worked (e.g. DRI2/3 on X.org),
1996 * whereas explicit fencing is what Android wants.
1999 * Use this property to pass a fence that DRM should wait on before
2000 * proceeding with the Atomic Commit request and show the framebuffer for
2001 * the plane on the screen. The fence can be either a normal fence or a
2002 * merged one, the sync_file framework will handle both cases and use a
2003 * fence_array if a merged fence is received. Passing -1 here means no
2004 * fences to wait on.
2006 * If the Atomic Commit request has the DRM_MODE_ATOMIC_TEST_ONLY flag
2007 * it will only check if the Sync File is a valid one.
2009 * On the driver side the fence is stored on the @fence parameter of
2010 * &struct drm_plane_state. Drivers which also support implicit fencing
2011 * should set the implicit fence using drm_atomic_set_fence_for_plane(),
2012 * to make sure there's consistent behaviour between drivers in precedence
2013 * of implicit vs. explicit fencing.
2016 * Use this property to pass a file descriptor pointer to DRM. Once the
2017 * Atomic Commit request call returns OUT_FENCE_PTR will be filled with
2018 * the file descriptor number of a Sync File. This Sync File contains the
2019 * CRTC fence that will be signaled when all framebuffers present on the
2020 * Atomic Commit * request for that given CRTC are scanned out on the
2023 * The Atomic Commit request fails if a invalid pointer is passed. If the
2024 * Atomic Commit request fails for any other reason the out fence fd
2025 * returned will be -1. On a Atomic Commit with the
2026 * DRM_MODE_ATOMIC_TEST_ONLY flag the out fence will also be set to -1.
2028 * Note that out-fences don't have a special interface to drivers and are
2029 * internally represented by a &struct drm_pending_vblank_event in struct
2030 * &drm_crtc_state, which is also used by the nonblocking atomic commit
2031 * helpers and for the DRM event handling for existing userspace.
2034 struct drm_out_fence_state
{
2035 s32 __user
*out_fence_ptr
;
2036 struct sync_file
*sync_file
;
2040 static int setup_out_fence(struct drm_out_fence_state
*fence_state
,
2041 struct dma_fence
*fence
)
2043 fence_state
->fd
= get_unused_fd_flags(O_CLOEXEC
);
2044 if (fence_state
->fd
< 0)
2045 return fence_state
->fd
;
2047 if (put_user(fence_state
->fd
, fence_state
->out_fence_ptr
))
2050 fence_state
->sync_file
= sync_file_create(fence
);
2051 if (!fence_state
->sync_file
)
2057 static int prepare_crtc_signaling(struct drm_device
*dev
,
2058 struct drm_atomic_state
*state
,
2059 struct drm_mode_atomic
*arg
,
2060 struct drm_file
*file_priv
,
2061 struct drm_out_fence_state
**fence_state
,
2062 unsigned int *num_fences
)
2064 struct drm_crtc
*crtc
;
2065 struct drm_crtc_state
*crtc_state
;
2068 if (arg
->flags
& DRM_MODE_ATOMIC_TEST_ONLY
)
2071 for_each_new_crtc_in_state(state
, crtc
, crtc_state
, i
) {
2072 s32 __user
*fence_ptr
;
2074 fence_ptr
= get_out_fence_for_crtc(crtc_state
->state
, crtc
);
2076 if (arg
->flags
& DRM_MODE_PAGE_FLIP_EVENT
|| fence_ptr
) {
2077 struct drm_pending_vblank_event
*e
;
2079 e
= create_vblank_event(dev
, arg
->user_data
);
2083 crtc_state
->event
= e
;
2086 if (arg
->flags
& DRM_MODE_PAGE_FLIP_EVENT
) {
2087 struct drm_pending_vblank_event
*e
= crtc_state
->event
;
2092 ret
= drm_event_reserve_init(dev
, file_priv
, &e
->base
,
2096 crtc_state
->event
= NULL
;
2102 struct dma_fence
*fence
;
2103 struct drm_out_fence_state
*f
;
2105 f
= krealloc(*fence_state
, sizeof(**fence_state
) *
2106 (*num_fences
+ 1), GFP_KERNEL
);
2110 memset(&f
[*num_fences
], 0, sizeof(*f
));
2112 f
[*num_fences
].out_fence_ptr
= fence_ptr
;
2115 fence
= drm_crtc_create_fence(crtc
);
2119 ret
= setup_out_fence(&f
[(*num_fences
)++], fence
);
2121 dma_fence_put(fence
);
2125 crtc_state
->event
->base
.fence
= fence
;
2132 * Having this flag means user mode pends on event which will never
2133 * reach due to lack of at least one CRTC for signaling
2135 if (c
== 0 && (arg
->flags
& DRM_MODE_PAGE_FLIP_EVENT
))
2141 static void complete_crtc_signaling(struct drm_device
*dev
,
2142 struct drm_atomic_state
*state
,
2143 struct drm_out_fence_state
*fence_state
,
2144 unsigned int num_fences
,
2147 struct drm_crtc
*crtc
;
2148 struct drm_crtc_state
*crtc_state
;
2152 for (i
= 0; i
< num_fences
; i
++)
2153 fd_install(fence_state
[i
].fd
,
2154 fence_state
[i
].sync_file
->file
);
2160 for_each_new_crtc_in_state(state
, crtc
, crtc_state
, i
) {
2161 struct drm_pending_vblank_event
*event
= crtc_state
->event
;
2163 * Free the allocated event. drm_atomic_helper_setup_commit
2164 * can allocate an event too, so only free it if it's ours
2165 * to prevent a double free in drm_atomic_state_clear.
2167 if (event
&& (event
->base
.fence
|| event
->base
.file_priv
)) {
2168 drm_event_cancel_free(dev
, &event
->base
);
2169 crtc_state
->event
= NULL
;
2176 for (i
= 0; i
< num_fences
; i
++) {
2177 if (fence_state
[i
].sync_file
)
2178 fput(fence_state
[i
].sync_file
->file
);
2179 if (fence_state
[i
].fd
>= 0)
2180 put_unused_fd(fence_state
[i
].fd
);
2182 /* If this fails log error to the user */
2183 if (fence_state
[i
].out_fence_ptr
&&
2184 put_user(-1, fence_state
[i
].out_fence_ptr
))
2185 DRM_DEBUG_ATOMIC("Couldn't clear out_fence_ptr\n");
2191 int drm_mode_atomic_ioctl(struct drm_device
*dev
,
2192 void *data
, struct drm_file
*file_priv
)
2194 struct drm_mode_atomic
*arg
= data
;
2195 uint32_t __user
*objs_ptr
= (uint32_t __user
*)(unsigned long)(arg
->objs_ptr
);
2196 uint32_t __user
*count_props_ptr
= (uint32_t __user
*)(unsigned long)(arg
->count_props_ptr
);
2197 uint32_t __user
*props_ptr
= (uint32_t __user
*)(unsigned long)(arg
->props_ptr
);
2198 uint64_t __user
*prop_values_ptr
= (uint64_t __user
*)(unsigned long)(arg
->prop_values_ptr
);
2199 unsigned int copied_objs
, copied_props
;
2200 struct drm_atomic_state
*state
;
2201 struct drm_modeset_acquire_ctx ctx
;
2202 struct drm_plane
*plane
;
2203 struct drm_out_fence_state
*fence_state
= NULL
;
2204 unsigned plane_mask
;
2206 unsigned int i
, j
, num_fences
= 0;
2208 /* disallow for drivers not supporting atomic: */
2209 if (!drm_core_check_feature(dev
, DRIVER_ATOMIC
))
2212 /* disallow for userspace that has not enabled atomic cap (even
2213 * though this may be a bit overkill, since legacy userspace
2214 * wouldn't know how to call this ioctl)
2216 if (!file_priv
->atomic
)
2219 if (arg
->flags
& ~DRM_MODE_ATOMIC_FLAGS
)
2225 if ((arg
->flags
& DRM_MODE_PAGE_FLIP_ASYNC
) &&
2226 !dev
->mode_config
.async_page_flip
)
2229 /* can't test and expect an event at the same time. */
2230 if ((arg
->flags
& DRM_MODE_ATOMIC_TEST_ONLY
) &&
2231 (arg
->flags
& DRM_MODE_PAGE_FLIP_EVENT
))
2234 drm_modeset_acquire_init(&ctx
, 0);
2236 state
= drm_atomic_state_alloc(dev
);
2240 state
->acquire_ctx
= &ctx
;
2241 state
->allow_modeset
= !!(arg
->flags
& DRM_MODE_ATOMIC_ALLOW_MODESET
);
2248 for (i
= 0; i
< arg
->count_objs
; i
++) {
2249 uint32_t obj_id
, count_props
;
2250 struct drm_mode_object
*obj
;
2252 if (get_user(obj_id
, objs_ptr
+ copied_objs
)) {
2257 obj
= drm_mode_object_find(dev
, obj_id
, DRM_MODE_OBJECT_ANY
);
2263 if (!obj
->properties
) {
2264 drm_mode_object_put(obj
);
2269 if (get_user(count_props
, count_props_ptr
+ copied_objs
)) {
2270 drm_mode_object_put(obj
);
2277 for (j
= 0; j
< count_props
; j
++) {
2279 uint64_t prop_value
;
2280 struct drm_property
*prop
;
2282 if (get_user(prop_id
, props_ptr
+ copied_props
)) {
2283 drm_mode_object_put(obj
);
2288 prop
= drm_mode_obj_find_prop_id(obj
, prop_id
);
2290 drm_mode_object_put(obj
);
2295 if (copy_from_user(&prop_value
,
2296 prop_values_ptr
+ copied_props
,
2297 sizeof(prop_value
))) {
2298 drm_mode_object_put(obj
);
2303 ret
= drm_atomic_set_property(state
, obj
, prop
,
2306 drm_mode_object_put(obj
);
2313 if (obj
->type
== DRM_MODE_OBJECT_PLANE
&& count_props
&&
2314 !(arg
->flags
& DRM_MODE_ATOMIC_TEST_ONLY
)) {
2315 plane
= obj_to_plane(obj
);
2316 plane_mask
|= (1 << drm_plane_index(plane
));
2317 plane
->old_fb
= plane
->fb
;
2319 drm_mode_object_put(obj
);
2322 ret
= prepare_crtc_signaling(dev
, state
, arg
, file_priv
, &fence_state
,
2327 if (arg
->flags
& DRM_MODE_ATOMIC_TEST_ONLY
) {
2328 ret
= drm_atomic_check_only(state
);
2329 } else if (arg
->flags
& DRM_MODE_ATOMIC_NONBLOCK
) {
2330 ret
= drm_atomic_nonblocking_commit(state
);
2332 if (unlikely(drm_debug
& DRM_UT_STATE
))
2333 drm_atomic_print_state(state
);
2335 ret
= drm_atomic_commit(state
);
2339 drm_atomic_clean_old_fb(dev
, plane_mask
, ret
);
2341 complete_crtc_signaling(dev
, state
, fence_state
, num_fences
, !ret
);
2343 if (ret
== -EDEADLK
) {
2344 drm_atomic_state_clear(state
);
2345 drm_modeset_backoff(&ctx
);
2349 drm_atomic_state_put(state
);
2351 drm_modeset_drop_locks(&ctx
);
2352 drm_modeset_acquire_fini(&ctx
);