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
;
185 obj
->funcs
->atomic_destroy_state(obj
,
186 state
->private_objs
[i
].state
);
187 state
->private_objs
[i
].ptr
= NULL
;
188 state
->private_objs
[i
].state
= NULL
;
190 state
->num_private_objs
= 0;
192 if (state
->fake_commit
) {
193 drm_crtc_commit_put(state
->fake_commit
);
194 state
->fake_commit
= NULL
;
197 EXPORT_SYMBOL(drm_atomic_state_default_clear
);
200 * drm_atomic_state_clear - clear state object
201 * @state: atomic state
203 * When the w/w mutex algorithm detects a deadlock we need to back off and drop
204 * all locks. So someone else could sneak in and change the current modeset
205 * configuration. Which means that all the state assembled in @state is no
206 * longer an atomic update to the current state, but to some arbitrary earlier
207 * state. Which could break assumptions the driver's
208 * &drm_mode_config_funcs.atomic_check likely relies on.
210 * Hence we must clear all cached state and completely start over, using this
213 void drm_atomic_state_clear(struct drm_atomic_state
*state
)
215 struct drm_device
*dev
= state
->dev
;
216 struct drm_mode_config
*config
= &dev
->mode_config
;
218 if (config
->funcs
->atomic_state_clear
)
219 config
->funcs
->atomic_state_clear(state
);
221 drm_atomic_state_default_clear(state
);
223 EXPORT_SYMBOL(drm_atomic_state_clear
);
226 * __drm_atomic_state_free - free all memory for an atomic state
227 * @ref: This atomic state to deallocate
229 * This frees all memory associated with an atomic state, including all the
230 * per-object state for planes, crtcs and connectors.
232 void __drm_atomic_state_free(struct kref
*ref
)
234 struct drm_atomic_state
*state
= container_of(ref
, typeof(*state
), ref
);
235 struct drm_mode_config
*config
= &state
->dev
->mode_config
;
237 drm_atomic_state_clear(state
);
239 DRM_DEBUG_ATOMIC("Freeing atomic state %p\n", state
);
241 if (config
->funcs
->atomic_state_free
) {
242 config
->funcs
->atomic_state_free(state
);
244 drm_atomic_state_default_release(state
);
248 EXPORT_SYMBOL(__drm_atomic_state_free
);
251 * drm_atomic_get_crtc_state - get crtc state
252 * @state: global atomic state object
253 * @crtc: crtc to get state object for
255 * This function returns the crtc state for the given crtc, allocating it if
256 * needed. It will also grab the relevant crtc lock to make sure that the state
261 * Either the allocated state or the error code encoded into the pointer. When
262 * the error is EDEADLK then the w/w mutex code has detected a deadlock and the
263 * entire atomic sequence must be restarted. All other errors are fatal.
265 struct drm_crtc_state
*
266 drm_atomic_get_crtc_state(struct drm_atomic_state
*state
,
267 struct drm_crtc
*crtc
)
269 int ret
, index
= drm_crtc_index(crtc
);
270 struct drm_crtc_state
*crtc_state
;
272 WARN_ON(!state
->acquire_ctx
);
274 crtc_state
= drm_atomic_get_existing_crtc_state(state
, crtc
);
278 ret
= drm_modeset_lock(&crtc
->mutex
, state
->acquire_ctx
);
282 crtc_state
= crtc
->funcs
->atomic_duplicate_state(crtc
);
284 return ERR_PTR(-ENOMEM
);
286 state
->crtcs
[index
].state
= crtc_state
;
287 state
->crtcs
[index
].old_state
= crtc
->state
;
288 state
->crtcs
[index
].new_state
= crtc_state
;
289 state
->crtcs
[index
].ptr
= crtc
;
290 crtc_state
->state
= state
;
292 DRM_DEBUG_ATOMIC("Added [CRTC:%d:%s] %p state to %p\n",
293 crtc
->base
.id
, crtc
->name
, crtc_state
, state
);
297 EXPORT_SYMBOL(drm_atomic_get_crtc_state
);
299 static void set_out_fence_for_crtc(struct drm_atomic_state
*state
,
300 struct drm_crtc
*crtc
, s32 __user
*fence_ptr
)
302 state
->crtcs
[drm_crtc_index(crtc
)].out_fence_ptr
= fence_ptr
;
305 static s32 __user
*get_out_fence_for_crtc(struct drm_atomic_state
*state
,
306 struct drm_crtc
*crtc
)
308 s32 __user
*fence_ptr
;
310 fence_ptr
= state
->crtcs
[drm_crtc_index(crtc
)].out_fence_ptr
;
311 state
->crtcs
[drm_crtc_index(crtc
)].out_fence_ptr
= NULL
;
317 * drm_atomic_set_mode_for_crtc - set mode for CRTC
318 * @state: the CRTC whose incoming state to update
319 * @mode: kernel-internal mode to use for the CRTC, or NULL to disable
321 * Set a mode (originating from the kernel) on the desired CRTC state and update
322 * the enable property.
325 * Zero on success, error code on failure. Cannot return -EDEADLK.
327 int drm_atomic_set_mode_for_crtc(struct drm_crtc_state
*state
,
328 const struct drm_display_mode
*mode
)
330 struct drm_mode_modeinfo umode
;
332 /* Early return for no change. */
333 if (mode
&& memcmp(&state
->mode
, mode
, sizeof(*mode
)) == 0)
336 drm_property_blob_put(state
->mode_blob
);
337 state
->mode_blob
= NULL
;
340 drm_mode_convert_to_umode(&umode
, mode
);
342 drm_property_create_blob(state
->crtc
->dev
,
345 if (IS_ERR(state
->mode_blob
))
346 return PTR_ERR(state
->mode_blob
);
348 drm_mode_copy(&state
->mode
, mode
);
349 state
->enable
= true;
350 DRM_DEBUG_ATOMIC("Set [MODE:%s] for CRTC state %p\n",
353 memset(&state
->mode
, 0, sizeof(state
->mode
));
354 state
->enable
= false;
355 DRM_DEBUG_ATOMIC("Set [NOMODE] for CRTC state %p\n",
361 EXPORT_SYMBOL(drm_atomic_set_mode_for_crtc
);
364 * drm_atomic_set_mode_prop_for_crtc - set mode for CRTC
365 * @state: the CRTC whose incoming state to update
366 * @blob: pointer to blob property to use for mode
368 * Set a mode (originating from a blob property) on the desired CRTC state.
369 * This function will take a reference on the blob property for the CRTC state,
370 * and release the reference held on the state's existing mode property, if any
374 * Zero on success, error code on failure. Cannot return -EDEADLK.
376 int drm_atomic_set_mode_prop_for_crtc(struct drm_crtc_state
*state
,
377 struct drm_property_blob
*blob
)
379 if (blob
== state
->mode_blob
)
382 drm_property_blob_put(state
->mode_blob
);
383 state
->mode_blob
= NULL
;
385 memset(&state
->mode
, 0, sizeof(state
->mode
));
388 if (blob
->length
!= sizeof(struct drm_mode_modeinfo
) ||
389 drm_mode_convert_umode(&state
->mode
,
390 (const struct drm_mode_modeinfo
*)
394 state
->mode_blob
= drm_property_blob_get(blob
);
395 state
->enable
= true;
396 DRM_DEBUG_ATOMIC("Set [MODE:%s] for CRTC state %p\n",
397 state
->mode
.name
, state
);
399 state
->enable
= false;
400 DRM_DEBUG_ATOMIC("Set [NOMODE] for CRTC state %p\n",
406 EXPORT_SYMBOL(drm_atomic_set_mode_prop_for_crtc
);
409 drm_atomic_replace_property_blob_from_id(struct drm_device
*dev
,
410 struct drm_property_blob
**blob
,
412 ssize_t expected_size
,
415 struct drm_property_blob
*new_blob
= NULL
;
418 new_blob
= drm_property_lookup_blob(dev
, blob_id
);
419 if (new_blob
== NULL
)
422 if (expected_size
> 0 && expected_size
!= new_blob
->length
) {
423 drm_property_blob_put(new_blob
);
428 *replaced
|= drm_property_replace_blob(blob
, new_blob
);
429 drm_property_blob_put(new_blob
);
435 * drm_atomic_crtc_set_property - set property on CRTC
436 * @crtc: the drm CRTC to set a property on
437 * @state: the state object to update with the new property value
438 * @property: the property to set
439 * @val: the new property value
441 * This function handles generic/core properties and calls out to driver's
442 * &drm_crtc_funcs.atomic_set_property for driver properties. To ensure
443 * consistent behavior you must call this function rather than the driver hook
447 * Zero on success, error code on failure
449 int drm_atomic_crtc_set_property(struct drm_crtc
*crtc
,
450 struct drm_crtc_state
*state
, struct drm_property
*property
,
453 struct drm_device
*dev
= crtc
->dev
;
454 struct drm_mode_config
*config
= &dev
->mode_config
;
455 bool replaced
= false;
458 if (property
== config
->prop_active
)
460 else if (property
== config
->prop_mode_id
) {
461 struct drm_property_blob
*mode
=
462 drm_property_lookup_blob(dev
, val
);
463 ret
= drm_atomic_set_mode_prop_for_crtc(state
, mode
);
464 drm_property_blob_put(mode
);
466 } else if (property
== config
->degamma_lut_property
) {
467 ret
= drm_atomic_replace_property_blob_from_id(dev
,
472 state
->color_mgmt_changed
|= replaced
;
474 } else if (property
== config
->ctm_property
) {
475 ret
= drm_atomic_replace_property_blob_from_id(dev
,
478 sizeof(struct drm_color_ctm
),
480 state
->color_mgmt_changed
|= replaced
;
482 } else if (property
== config
->gamma_lut_property
) {
483 ret
= drm_atomic_replace_property_blob_from_id(dev
,
488 state
->color_mgmt_changed
|= replaced
;
490 } else if (property
== config
->prop_out_fence_ptr
) {
491 s32 __user
*fence_ptr
= u64_to_user_ptr(val
);
496 if (put_user(-1, fence_ptr
))
499 set_out_fence_for_crtc(state
->state
, crtc
, fence_ptr
);
500 } else if (crtc
->funcs
->atomic_set_property
)
501 return crtc
->funcs
->atomic_set_property(crtc
, state
, property
, val
);
507 EXPORT_SYMBOL(drm_atomic_crtc_set_property
);
510 * drm_atomic_crtc_get_property - get property value from CRTC state
511 * @crtc: the drm CRTC to set a property on
512 * @state: the state object to get the property value from
513 * @property: the property to set
514 * @val: return location for the property value
516 * This function handles generic/core properties and calls out to driver's
517 * &drm_crtc_funcs.atomic_get_property for driver properties. To ensure
518 * consistent behavior you must call this function rather than the driver hook
522 * Zero on success, error code on failure
525 drm_atomic_crtc_get_property(struct drm_crtc
*crtc
,
526 const struct drm_crtc_state
*state
,
527 struct drm_property
*property
, uint64_t *val
)
529 struct drm_device
*dev
= crtc
->dev
;
530 struct drm_mode_config
*config
= &dev
->mode_config
;
532 if (property
== config
->prop_active
)
533 *val
= state
->active
;
534 else if (property
== config
->prop_mode_id
)
535 *val
= (state
->mode_blob
) ? state
->mode_blob
->base
.id
: 0;
536 else if (property
== config
->degamma_lut_property
)
537 *val
= (state
->degamma_lut
) ? state
->degamma_lut
->base
.id
: 0;
538 else if (property
== config
->ctm_property
)
539 *val
= (state
->ctm
) ? state
->ctm
->base
.id
: 0;
540 else if (property
== config
->gamma_lut_property
)
541 *val
= (state
->gamma_lut
) ? state
->gamma_lut
->base
.id
: 0;
542 else if (property
== config
->prop_out_fence_ptr
)
544 else if (crtc
->funcs
->atomic_get_property
)
545 return crtc
->funcs
->atomic_get_property(crtc
, state
, property
, val
);
553 * drm_atomic_crtc_check - check crtc state
554 * @crtc: crtc to check
555 * @state: crtc state to check
557 * Provides core sanity checks for crtc state.
560 * Zero on success, error code on failure
562 static int drm_atomic_crtc_check(struct drm_crtc
*crtc
,
563 struct drm_crtc_state
*state
)
565 /* NOTE: we explicitly don't enforce constraints such as primary
566 * layer covering entire screen, since that is something we want
567 * to allow (on hw that supports it). For hw that does not, it
568 * should be checked in driver's crtc->atomic_check() vfunc.
570 * TODO: Add generic modeset state checks once we support those.
573 if (state
->active
&& !state
->enable
) {
574 DRM_DEBUG_ATOMIC("[CRTC:%d:%s] active without enabled\n",
575 crtc
->base
.id
, crtc
->name
);
579 /* The state->enable vs. state->mode_blob checks can be WARN_ON,
580 * as this is a kernel-internal detail that userspace should never
581 * be able to trigger. */
582 if (drm_core_check_feature(crtc
->dev
, DRIVER_ATOMIC
) &&
583 WARN_ON(state
->enable
&& !state
->mode_blob
)) {
584 DRM_DEBUG_ATOMIC("[CRTC:%d:%s] enabled without mode blob\n",
585 crtc
->base
.id
, crtc
->name
);
589 if (drm_core_check_feature(crtc
->dev
, DRIVER_ATOMIC
) &&
590 WARN_ON(!state
->enable
&& state
->mode_blob
)) {
591 DRM_DEBUG_ATOMIC("[CRTC:%d:%s] disabled with mode blob\n",
592 crtc
->base
.id
, crtc
->name
);
597 * Reject event generation for when a CRTC is off and stays off.
598 * It wouldn't be hard to implement this, but userspace has a track
599 * record of happily burning through 100% cpu (or worse, crash) when the
600 * display pipe is suspended. To avoid all that fun just reject updates
601 * that ask for events since likely that indicates a bug in the
602 * compositor's drawing loop. This is consistent with the vblank IOCTL
603 * and legacy page_flip IOCTL which also reject service on a disabled
606 if (state
->event
&& !state
->active
&& !crtc
->state
->active
) {
607 DRM_DEBUG_ATOMIC("[CRTC:%d:%s] requesting event but off\n",
608 crtc
->base
.id
, crtc
->name
);
615 static void drm_atomic_crtc_print_state(struct drm_printer
*p
,
616 const struct drm_crtc_state
*state
)
618 struct drm_crtc
*crtc
= state
->crtc
;
620 drm_printf(p
, "crtc[%u]: %s\n", crtc
->base
.id
, crtc
->name
);
621 drm_printf(p
, "\tenable=%d\n", state
->enable
);
622 drm_printf(p
, "\tactive=%d\n", state
->active
);
623 drm_printf(p
, "\tplanes_changed=%d\n", state
->planes_changed
);
624 drm_printf(p
, "\tmode_changed=%d\n", state
->mode_changed
);
625 drm_printf(p
, "\tactive_changed=%d\n", state
->active_changed
);
626 drm_printf(p
, "\tconnectors_changed=%d\n", state
->connectors_changed
);
627 drm_printf(p
, "\tcolor_mgmt_changed=%d\n", state
->color_mgmt_changed
);
628 drm_printf(p
, "\tplane_mask=%x\n", state
->plane_mask
);
629 drm_printf(p
, "\tconnector_mask=%x\n", state
->connector_mask
);
630 drm_printf(p
, "\tencoder_mask=%x\n", state
->encoder_mask
);
631 drm_printf(p
, "\tmode: " DRM_MODE_FMT
"\n", DRM_MODE_ARG(&state
->mode
));
633 if (crtc
->funcs
->atomic_print_state
)
634 crtc
->funcs
->atomic_print_state(p
, state
);
638 * drm_atomic_get_plane_state - get plane state
639 * @state: global atomic state object
640 * @plane: plane to get state object for
642 * This function returns the plane state for the given plane, allocating it if
643 * needed. It will also grab the relevant plane lock to make sure that the state
648 * Either the allocated state or the error code encoded into the pointer. When
649 * the error is EDEADLK then the w/w mutex code has detected a deadlock and the
650 * entire atomic sequence must be restarted. All other errors are fatal.
652 struct drm_plane_state
*
653 drm_atomic_get_plane_state(struct drm_atomic_state
*state
,
654 struct drm_plane
*plane
)
656 int ret
, index
= drm_plane_index(plane
);
657 struct drm_plane_state
*plane_state
;
659 WARN_ON(!state
->acquire_ctx
);
661 plane_state
= drm_atomic_get_existing_plane_state(state
, plane
);
665 ret
= drm_modeset_lock(&plane
->mutex
, state
->acquire_ctx
);
669 plane_state
= plane
->funcs
->atomic_duplicate_state(plane
);
671 return ERR_PTR(-ENOMEM
);
673 state
->planes
[index
].state
= plane_state
;
674 state
->planes
[index
].ptr
= plane
;
675 state
->planes
[index
].old_state
= plane
->state
;
676 state
->planes
[index
].new_state
= plane_state
;
677 plane_state
->state
= state
;
679 DRM_DEBUG_ATOMIC("Added [PLANE:%d:%s] %p state to %p\n",
680 plane
->base
.id
, plane
->name
, plane_state
, state
);
682 if (plane_state
->crtc
) {
683 struct drm_crtc_state
*crtc_state
;
685 crtc_state
= drm_atomic_get_crtc_state(state
,
687 if (IS_ERR(crtc_state
))
688 return ERR_CAST(crtc_state
);
693 EXPORT_SYMBOL(drm_atomic_get_plane_state
);
696 * drm_atomic_plane_set_property - set property on plane
697 * @plane: the drm plane to set a property on
698 * @state: the state object to update with the new property value
699 * @property: the property to set
700 * @val: the new property value
702 * This function handles generic/core properties and calls out to driver's
703 * &drm_plane_funcs.atomic_set_property for driver properties. To ensure
704 * consistent behavior you must call this function rather than the driver hook
708 * Zero on success, error code on failure
710 static int drm_atomic_plane_set_property(struct drm_plane
*plane
,
711 struct drm_plane_state
*state
, struct drm_property
*property
,
714 struct drm_device
*dev
= plane
->dev
;
715 struct drm_mode_config
*config
= &dev
->mode_config
;
717 if (property
== config
->prop_fb_id
) {
718 struct drm_framebuffer
*fb
= drm_framebuffer_lookup(dev
, NULL
, val
);
719 drm_atomic_set_fb_for_plane(state
, fb
);
721 drm_framebuffer_put(fb
);
722 } else if (property
== config
->prop_in_fence_fd
) {
726 if (U642I64(val
) == -1)
729 state
->fence
= sync_file_get_fence(val
);
733 } else if (property
== config
->prop_crtc_id
) {
734 struct drm_crtc
*crtc
= drm_crtc_find(dev
, NULL
, val
);
735 return drm_atomic_set_crtc_for_plane(state
, crtc
);
736 } else if (property
== config
->prop_crtc_x
) {
737 state
->crtc_x
= U642I64(val
);
738 } else if (property
== config
->prop_crtc_y
) {
739 state
->crtc_y
= U642I64(val
);
740 } else if (property
== config
->prop_crtc_w
) {
742 } else if (property
== config
->prop_crtc_h
) {
744 } else if (property
== config
->prop_src_x
) {
746 } else if (property
== config
->prop_src_y
) {
748 } else if (property
== config
->prop_src_w
) {
750 } else if (property
== config
->prop_src_h
) {
752 } else if (property
== plane
->rotation_property
) {
753 if (!is_power_of_2(val
& DRM_MODE_ROTATE_MASK
))
755 state
->rotation
= val
;
756 } else if (property
== plane
->zpos_property
) {
758 } else if (plane
->funcs
->atomic_set_property
) {
759 return plane
->funcs
->atomic_set_property(plane
, state
,
769 * drm_atomic_plane_get_property - get property value from plane state
770 * @plane: the drm plane to set a property on
771 * @state: the state object to get the property value from
772 * @property: the property to set
773 * @val: return location for the property value
775 * This function handles generic/core properties and calls out to driver's
776 * &drm_plane_funcs.atomic_get_property for driver properties. To ensure
777 * consistent behavior you must call this function rather than the driver hook
781 * Zero on success, error code on failure
784 drm_atomic_plane_get_property(struct drm_plane
*plane
,
785 const struct drm_plane_state
*state
,
786 struct drm_property
*property
, uint64_t *val
)
788 struct drm_device
*dev
= plane
->dev
;
789 struct drm_mode_config
*config
= &dev
->mode_config
;
791 if (property
== config
->prop_fb_id
) {
792 *val
= (state
->fb
) ? state
->fb
->base
.id
: 0;
793 } else if (property
== config
->prop_in_fence_fd
) {
795 } else if (property
== config
->prop_crtc_id
) {
796 *val
= (state
->crtc
) ? state
->crtc
->base
.id
: 0;
797 } else if (property
== config
->prop_crtc_x
) {
798 *val
= I642U64(state
->crtc_x
);
799 } else if (property
== config
->prop_crtc_y
) {
800 *val
= I642U64(state
->crtc_y
);
801 } else if (property
== config
->prop_crtc_w
) {
802 *val
= state
->crtc_w
;
803 } else if (property
== config
->prop_crtc_h
) {
804 *val
= state
->crtc_h
;
805 } else if (property
== config
->prop_src_x
) {
807 } else if (property
== config
->prop_src_y
) {
809 } else if (property
== config
->prop_src_w
) {
811 } else if (property
== config
->prop_src_h
) {
813 } else if (property
== plane
->rotation_property
) {
814 *val
= state
->rotation
;
815 } else if (property
== plane
->zpos_property
) {
817 } else if (plane
->funcs
->atomic_get_property
) {
818 return plane
->funcs
->atomic_get_property(plane
, state
, property
, val
);
827 plane_switching_crtc(struct drm_atomic_state
*state
,
828 struct drm_plane
*plane
,
829 struct drm_plane_state
*plane_state
)
831 if (!plane
->state
->crtc
|| !plane_state
->crtc
)
834 if (plane
->state
->crtc
== plane_state
->crtc
)
837 /* This could be refined, but currently there's no helper or driver code
838 * to implement direct switching of active planes nor userspace to take
839 * advantage of more direct plane switching without the intermediate
846 * drm_atomic_plane_check - check plane state
847 * @plane: plane to check
848 * @state: plane state to check
850 * Provides core sanity checks for plane state.
853 * Zero on success, error code on failure
855 static int drm_atomic_plane_check(struct drm_plane
*plane
,
856 struct drm_plane_state
*state
)
858 unsigned int fb_width
, fb_height
;
861 /* either *both* CRTC and FB must be set, or neither */
862 if (WARN_ON(state
->crtc
&& !state
->fb
)) {
863 DRM_DEBUG_ATOMIC("CRTC set but no FB\n");
865 } else if (WARN_ON(state
->fb
&& !state
->crtc
)) {
866 DRM_DEBUG_ATOMIC("FB set but no CRTC\n");
870 /* if disabled, we don't care about the rest of the state: */
874 /* Check whether this plane is usable on this CRTC */
875 if (!(plane
->possible_crtcs
& drm_crtc_mask(state
->crtc
))) {
876 DRM_DEBUG_ATOMIC("Invalid crtc for plane\n");
880 /* Check whether this plane supports the fb pixel format. */
881 ret
= drm_plane_check_pixel_format(plane
, state
->fb
->format
->format
);
883 struct drm_format_name_buf format_name
;
884 DRM_DEBUG_ATOMIC("Invalid pixel format %s\n",
885 drm_get_format_name(state
->fb
->format
->format
,
890 /* Give drivers some help against integer overflows */
891 if (state
->crtc_w
> INT_MAX
||
892 state
->crtc_x
> INT_MAX
- (int32_t) state
->crtc_w
||
893 state
->crtc_h
> INT_MAX
||
894 state
->crtc_y
> INT_MAX
- (int32_t) state
->crtc_h
) {
895 DRM_DEBUG_ATOMIC("Invalid CRTC coordinates %ux%u+%d+%d\n",
896 state
->crtc_w
, state
->crtc_h
,
897 state
->crtc_x
, state
->crtc_y
);
901 fb_width
= state
->fb
->width
<< 16;
902 fb_height
= state
->fb
->height
<< 16;
904 /* Make sure source coordinates are inside the fb. */
905 if (state
->src_w
> fb_width
||
906 state
->src_x
> fb_width
- state
->src_w
||
907 state
->src_h
> fb_height
||
908 state
->src_y
> fb_height
- state
->src_h
) {
909 DRM_DEBUG_ATOMIC("Invalid source coordinates "
910 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
911 state
->src_w
>> 16, ((state
->src_w
& 0xffff) * 15625) >> 10,
912 state
->src_h
>> 16, ((state
->src_h
& 0xffff) * 15625) >> 10,
913 state
->src_x
>> 16, ((state
->src_x
& 0xffff) * 15625) >> 10,
914 state
->src_y
>> 16, ((state
->src_y
& 0xffff) * 15625) >> 10);
918 if (plane_switching_crtc(state
->state
, plane
, state
)) {
919 DRM_DEBUG_ATOMIC("[PLANE:%d:%s] switching CRTC directly\n",
920 plane
->base
.id
, plane
->name
);
927 static void drm_atomic_plane_print_state(struct drm_printer
*p
,
928 const struct drm_plane_state
*state
)
930 struct drm_plane
*plane
= state
->plane
;
931 struct drm_rect src
= drm_plane_state_src(state
);
932 struct drm_rect dest
= drm_plane_state_dest(state
);
934 drm_printf(p
, "plane[%u]: %s\n", plane
->base
.id
, plane
->name
);
935 drm_printf(p
, "\tcrtc=%s\n", state
->crtc
? state
->crtc
->name
: "(null)");
936 drm_printf(p
, "\tfb=%u\n", state
->fb
? state
->fb
->base
.id
: 0);
938 struct drm_framebuffer
*fb
= state
->fb
;
939 int i
, n
= fb
->format
->num_planes
;
940 struct drm_format_name_buf format_name
;
942 drm_printf(p
, "\t\tformat=%s\n",
943 drm_get_format_name(fb
->format
->format
, &format_name
));
944 drm_printf(p
, "\t\t\tmodifier=0x%lx\n", fb
->modifier
);
945 drm_printf(p
, "\t\tsize=%dx%d\n", fb
->width
, fb
->height
);
946 drm_printf(p
, "\t\tlayers:\n");
947 for (i
= 0; i
< n
; i
++) {
948 drm_printf(p
, "\t\t\tpitch[%d]=%u\n", i
, fb
->pitches
[i
]);
949 drm_printf(p
, "\t\t\toffset[%d]=%u\n", i
, fb
->offsets
[i
]);
952 drm_printf(p
, "\tcrtc-pos=" DRM_RECT_FMT
"\n", DRM_RECT_ARG(&dest
));
953 drm_printf(p
, "\tsrc-pos=" DRM_RECT_FP_FMT
"\n", DRM_RECT_FP_ARG(&src
));
954 drm_printf(p
, "\trotation=%x\n", state
->rotation
);
956 if (plane
->funcs
->atomic_print_state
)
957 plane
->funcs
->atomic_print_state(p
, state
);
961 * drm_atomic_private_obj_init - initialize private object
962 * @obj: private object
963 * @state: initial private object state
964 * @funcs: pointer to the struct of function pointers that identify the object
967 * Initialize the private object, which can be embedded into any
968 * driver private object that needs its own atomic state.
971 drm_atomic_private_obj_init(struct drm_private_obj
*obj
,
972 struct drm_private_state
*state
,
973 const struct drm_private_state_funcs
*funcs
)
975 memset(obj
, 0, sizeof(*obj
));
980 EXPORT_SYMBOL(drm_atomic_private_obj_init
);
983 * drm_atomic_private_obj_fini - finalize private object
984 * @obj: private object
986 * Finalize the private object.
989 drm_atomic_private_obj_fini(struct drm_private_obj
*obj
)
991 obj
->funcs
->atomic_destroy_state(obj
, obj
->state
);
993 EXPORT_SYMBOL(drm_atomic_private_obj_fini
);
996 * drm_atomic_get_private_obj_state - get private object state
997 * @state: global atomic state
998 * @obj: private object to get the state for
1000 * This function returns the private object state for the given private object,
1001 * allocating the state if needed. It does not grab any locks as the caller is
1002 * expected to care of any required locking.
1006 * Either the allocated state or the error code encoded into a pointer.
1008 struct drm_private_state
*
1009 drm_atomic_get_private_obj_state(struct drm_atomic_state
*state
,
1010 struct drm_private_obj
*obj
)
1012 int index
, num_objs
, i
;
1014 struct __drm_private_objs_state
*arr
;
1015 struct drm_private_state
*obj_state
;
1017 for (i
= 0; i
< state
->num_private_objs
; i
++)
1018 if (obj
== state
->private_objs
[i
].ptr
)
1019 return state
->private_objs
[i
].state
;
1021 num_objs
= state
->num_private_objs
+ 1;
1022 size
= sizeof(*state
->private_objs
) * num_objs
;
1023 arr
= krealloc(state
->private_objs
, size
, M_DRM
, GFP_KERNEL
);
1025 return ERR_PTR(-ENOMEM
);
1027 state
->private_objs
= arr
;
1028 index
= state
->num_private_objs
;
1029 memset(&state
->private_objs
[index
], 0, sizeof(*state
->private_objs
));
1031 obj_state
= obj
->funcs
->atomic_duplicate_state(obj
);
1033 return ERR_PTR(-ENOMEM
);
1035 state
->private_objs
[index
].state
= obj_state
;
1036 state
->private_objs
[index
].old_state
= obj
->state
;
1037 state
->private_objs
[index
].new_state
= obj_state
;
1038 state
->private_objs
[index
].ptr
= obj
;
1040 state
->num_private_objs
= num_objs
;
1042 DRM_DEBUG_ATOMIC("Added new private object %p state %p to %p\n",
1043 obj
, obj_state
, state
);
1047 EXPORT_SYMBOL(drm_atomic_get_private_obj_state
);
1050 * drm_atomic_get_connector_state - get connector state
1051 * @state: global atomic state object
1052 * @connector: connector to get state object for
1054 * This function returns the connector state for the given connector,
1055 * allocating it if needed. It will also grab the relevant connector lock to
1056 * make sure that the state is consistent.
1060 * Either the allocated state or the error code encoded into the pointer. When
1061 * the error is EDEADLK then the w/w mutex code has detected a deadlock and the
1062 * entire atomic sequence must be restarted. All other errors are fatal.
1064 struct drm_connector_state
*
1065 drm_atomic_get_connector_state(struct drm_atomic_state
*state
,
1066 struct drm_connector
*connector
)
1069 struct drm_mode_config
*config
= &connector
->dev
->mode_config
;
1070 struct drm_connector_state
*connector_state
;
1072 WARN_ON(!state
->acquire_ctx
);
1074 ret
= drm_modeset_lock(&config
->connection_mutex
, state
->acquire_ctx
);
1076 return ERR_PTR(ret
);
1078 index
= drm_connector_index(connector
);
1080 if (index
>= state
->num_connector
) {
1081 struct __drm_connnectors_state
*c
;
1082 int alloc
= max(index
+ 1, config
->num_connector
);
1084 c
= krealloc(state
->connectors
,
1085 alloc
* sizeof(*state
->connectors
), M_DRM
,
1088 return ERR_PTR(-ENOMEM
);
1090 state
->connectors
= c
;
1091 memset(&state
->connectors
[state
->num_connector
], 0,
1092 sizeof(*state
->connectors
) * (alloc
- state
->num_connector
));
1094 state
->num_connector
= alloc
;
1097 if (state
->connectors
[index
].state
)
1098 return state
->connectors
[index
].state
;
1100 connector_state
= connector
->funcs
->atomic_duplicate_state(connector
);
1101 if (!connector_state
)
1102 return ERR_PTR(-ENOMEM
);
1104 drm_connector_get(connector
);
1105 state
->connectors
[index
].state
= connector_state
;
1106 state
->connectors
[index
].old_state
= connector
->state
;
1107 state
->connectors
[index
].new_state
= connector_state
;
1108 state
->connectors
[index
].ptr
= connector
;
1109 connector_state
->state
= state
;
1111 DRM_DEBUG_ATOMIC("Added [CONNECTOR:%d:%s] %p state to %p\n",
1112 connector
->base
.id
, connector
->name
,
1113 connector_state
, state
);
1115 if (connector_state
->crtc
) {
1116 struct drm_crtc_state
*crtc_state
;
1118 crtc_state
= drm_atomic_get_crtc_state(state
,
1119 connector_state
->crtc
);
1120 if (IS_ERR(crtc_state
))
1121 return ERR_CAST(crtc_state
);
1124 return connector_state
;
1126 EXPORT_SYMBOL(drm_atomic_get_connector_state
);
1129 * drm_atomic_connector_set_property - set property on connector.
1130 * @connector: the drm connector to set a property on
1131 * @state: the state object to update with the new property value
1132 * @property: the property to set
1133 * @val: the new property value
1135 * This function handles generic/core properties and calls out to driver's
1136 * &drm_connector_funcs.atomic_set_property for driver properties. To ensure
1137 * consistent behavior you must call this function rather than the driver hook
1141 * Zero on success, error code on failure
1143 static int drm_atomic_connector_set_property(struct drm_connector
*connector
,
1144 struct drm_connector_state
*state
, struct drm_property
*property
,
1147 struct drm_device
*dev
= connector
->dev
;
1148 struct drm_mode_config
*config
= &dev
->mode_config
;
1150 if (property
== config
->prop_crtc_id
) {
1151 struct drm_crtc
*crtc
= drm_crtc_find(dev
, NULL
, val
);
1152 return drm_atomic_set_crtc_for_connector(state
, crtc
);
1153 } else if (property
== config
->dpms_property
) {
1154 /* setting DPMS property requires special handling, which
1155 * is done in legacy setprop path for us. Disallow (for
1156 * now?) atomic writes to DPMS property:
1159 } else if (property
== config
->tv_select_subconnector_property
) {
1160 state
->tv
.subconnector
= val
;
1161 } else if (property
== config
->tv_left_margin_property
) {
1162 state
->tv
.margins
.left
= val
;
1163 } else if (property
== config
->tv_right_margin_property
) {
1164 state
->tv
.margins
.right
= val
;
1165 } else if (property
== config
->tv_top_margin_property
) {
1166 state
->tv
.margins
.top
= val
;
1167 } else if (property
== config
->tv_bottom_margin_property
) {
1168 state
->tv
.margins
.bottom
= val
;
1169 } else if (property
== config
->tv_mode_property
) {
1170 state
->tv
.mode
= val
;
1171 } else if (property
== config
->tv_brightness_property
) {
1172 state
->tv
.brightness
= val
;
1173 } else if (property
== config
->tv_contrast_property
) {
1174 state
->tv
.contrast
= val
;
1175 } else if (property
== config
->tv_flicker_reduction_property
) {
1176 state
->tv
.flicker_reduction
= val
;
1177 } else if (property
== config
->tv_overscan_property
) {
1178 state
->tv
.overscan
= val
;
1179 } else if (property
== config
->tv_saturation_property
) {
1180 state
->tv
.saturation
= val
;
1181 } else if (property
== config
->tv_hue_property
) {
1182 state
->tv
.hue
= val
;
1183 } else if (property
== config
->link_status_property
) {
1184 /* Never downgrade from GOOD to BAD on userspace's request here,
1185 * only hw issues can do that.
1187 * For an atomic property the userspace doesn't need to be able
1188 * to understand all the properties, but needs to be able to
1189 * restore the state it wants on VT switch. So if the userspace
1190 * tries to change the link_status from GOOD to BAD, driver
1191 * silently rejects it and returns a 0. This prevents userspace
1192 * from accidently breaking the display when it restores the
1195 if (state
->link_status
!= DRM_LINK_STATUS_GOOD
)
1196 state
->link_status
= val
;
1197 } else if (property
== config
->aspect_ratio_property
) {
1198 state
->picture_aspect_ratio
= val
;
1199 } else if (property
== connector
->scaling_mode_property
) {
1200 state
->scaling_mode
= val
;
1201 } else if (connector
->funcs
->atomic_set_property
) {
1202 return connector
->funcs
->atomic_set_property(connector
,
1203 state
, property
, val
);
1211 static void drm_atomic_connector_print_state(struct drm_printer
*p
,
1212 const struct drm_connector_state
*state
)
1214 struct drm_connector
*connector
= state
->connector
;
1216 drm_printf(p
, "connector[%u]: %s\n", connector
->base
.id
, connector
->name
);
1217 drm_printf(p
, "\tcrtc=%s\n", state
->crtc
? state
->crtc
->name
: "(null)");
1219 if (connector
->funcs
->atomic_print_state
)
1220 connector
->funcs
->atomic_print_state(p
, state
);
1224 * drm_atomic_connector_get_property - get property value from connector state
1225 * @connector: the drm connector to set a property on
1226 * @state: the state object to get the property value from
1227 * @property: the property to set
1228 * @val: return location for the property value
1230 * This function handles generic/core properties and calls out to driver's
1231 * &drm_connector_funcs.atomic_get_property for driver properties. To ensure
1232 * consistent behavior you must call this function rather than the driver hook
1236 * Zero on success, error code on failure
1239 drm_atomic_connector_get_property(struct drm_connector
*connector
,
1240 const struct drm_connector_state
*state
,
1241 struct drm_property
*property
, uint64_t *val
)
1243 struct drm_device
*dev
= connector
->dev
;
1244 struct drm_mode_config
*config
= &dev
->mode_config
;
1246 if (property
== config
->prop_crtc_id
) {
1247 *val
= (state
->crtc
) ? state
->crtc
->base
.id
: 0;
1248 } else if (property
== config
->dpms_property
) {
1249 *val
= connector
->dpms
;
1250 } else if (property
== config
->tv_select_subconnector_property
) {
1251 *val
= state
->tv
.subconnector
;
1252 } else if (property
== config
->tv_left_margin_property
) {
1253 *val
= state
->tv
.margins
.left
;
1254 } else if (property
== config
->tv_right_margin_property
) {
1255 *val
= state
->tv
.margins
.right
;
1256 } else if (property
== config
->tv_top_margin_property
) {
1257 *val
= state
->tv
.margins
.top
;
1258 } else if (property
== config
->tv_bottom_margin_property
) {
1259 *val
= state
->tv
.margins
.bottom
;
1260 } else if (property
== config
->tv_mode_property
) {
1261 *val
= state
->tv
.mode
;
1262 } else if (property
== config
->tv_brightness_property
) {
1263 *val
= state
->tv
.brightness
;
1264 } else if (property
== config
->tv_contrast_property
) {
1265 *val
= state
->tv
.contrast
;
1266 } else if (property
== config
->tv_flicker_reduction_property
) {
1267 *val
= state
->tv
.flicker_reduction
;
1268 } else if (property
== config
->tv_overscan_property
) {
1269 *val
= state
->tv
.overscan
;
1270 } else if (property
== config
->tv_saturation_property
) {
1271 *val
= state
->tv
.saturation
;
1272 } else if (property
== config
->tv_hue_property
) {
1273 *val
= state
->tv
.hue
;
1274 } else if (property
== config
->link_status_property
) {
1275 *val
= state
->link_status
;
1276 } else if (property
== config
->aspect_ratio_property
) {
1277 *val
= state
->picture_aspect_ratio
;
1278 } else if (property
== connector
->scaling_mode_property
) {
1279 *val
= state
->scaling_mode
;
1280 } else if (connector
->funcs
->atomic_get_property
) {
1281 return connector
->funcs
->atomic_get_property(connector
,
1282 state
, property
, val
);
1290 int drm_atomic_get_property(struct drm_mode_object
*obj
,
1291 struct drm_property
*property
, uint64_t *val
)
1293 struct drm_device
*dev
= property
->dev
;
1296 switch (obj
->type
) {
1297 case DRM_MODE_OBJECT_CONNECTOR
: {
1298 struct drm_connector
*connector
= obj_to_connector(obj
);
1299 WARN_ON(!drm_modeset_is_locked(&dev
->mode_config
.connection_mutex
));
1300 ret
= drm_atomic_connector_get_property(connector
,
1301 connector
->state
, property
, val
);
1304 case DRM_MODE_OBJECT_CRTC
: {
1305 struct drm_crtc
*crtc
= obj_to_crtc(obj
);
1306 WARN_ON(!drm_modeset_is_locked(&crtc
->mutex
));
1307 ret
= drm_atomic_crtc_get_property(crtc
,
1308 crtc
->state
, property
, val
);
1311 case DRM_MODE_OBJECT_PLANE
: {
1312 struct drm_plane
*plane
= obj_to_plane(obj
);
1313 WARN_ON(!drm_modeset_is_locked(&plane
->mutex
));
1314 ret
= drm_atomic_plane_get_property(plane
,
1315 plane
->state
, property
, val
);
1327 * drm_atomic_set_crtc_for_plane - set crtc for plane
1328 * @plane_state: the plane whose incoming state to update
1329 * @crtc: crtc to use for the plane
1331 * Changing the assigned crtc for a plane requires us to grab the lock and state
1332 * for the new crtc, as needed. This function takes care of all these details
1333 * besides updating the pointer in the state object itself.
1336 * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK
1337 * then the w/w mutex code has detected a deadlock and the entire atomic
1338 * sequence must be restarted. All other errors are fatal.
1341 drm_atomic_set_crtc_for_plane(struct drm_plane_state
*plane_state
,
1342 struct drm_crtc
*crtc
)
1344 struct drm_plane
*plane
= plane_state
->plane
;
1345 struct drm_crtc_state
*crtc_state
;
1347 if (plane_state
->crtc
) {
1348 crtc_state
= drm_atomic_get_crtc_state(plane_state
->state
,
1350 if (WARN_ON(IS_ERR(crtc_state
)))
1351 return PTR_ERR(crtc_state
);
1353 crtc_state
->plane_mask
&= ~(1 << drm_plane_index(plane
));
1356 plane_state
->crtc
= crtc
;
1359 crtc_state
= drm_atomic_get_crtc_state(plane_state
->state
,
1361 if (IS_ERR(crtc_state
))
1362 return PTR_ERR(crtc_state
);
1363 crtc_state
->plane_mask
|= (1 << drm_plane_index(plane
));
1367 DRM_DEBUG_ATOMIC("Link plane state %p to [CRTC:%d:%s]\n",
1368 plane_state
, crtc
->base
.id
, crtc
->name
);
1370 DRM_DEBUG_ATOMIC("Link plane state %p to [NOCRTC]\n",
1375 EXPORT_SYMBOL(drm_atomic_set_crtc_for_plane
);
1378 * drm_atomic_set_fb_for_plane - set framebuffer for plane
1379 * @plane_state: atomic state object for the plane
1380 * @fb: fb to use for the plane
1382 * Changing the assigned framebuffer for a plane requires us to grab a reference
1383 * to the new fb and drop the reference to the old fb, if there is one. This
1384 * function takes care of all these details besides updating the pointer in the
1385 * state object itself.
1388 drm_atomic_set_fb_for_plane(struct drm_plane_state
*plane_state
,
1389 struct drm_framebuffer
*fb
)
1392 DRM_DEBUG_ATOMIC("Set [FB:%d] for plane state %p\n",
1393 fb
->base
.id
, plane_state
);
1395 DRM_DEBUG_ATOMIC("Set [NOFB] for plane state %p\n",
1398 drm_framebuffer_assign(&plane_state
->fb
, fb
);
1400 EXPORT_SYMBOL(drm_atomic_set_fb_for_plane
);
1403 * drm_atomic_set_fence_for_plane - set fence for plane
1404 * @plane_state: atomic state object for the plane
1405 * @fence: dma_fence to use for the plane
1407 * Helper to setup the plane_state fence in case it is not set yet.
1408 * By using this drivers doesn't need to worry if the user choose
1409 * implicit or explicit fencing.
1411 * This function will not set the fence to the state if it was set
1412 * via explicit fencing interfaces on the atomic ioctl. In that case it will
1413 * drop the reference to the fence as we are not storing it anywhere.
1414 * Otherwise, if &drm_plane_state.fence is not set this function we just set it
1415 * with the received implicit fence. In both cases this function consumes a
1416 * reference for @fence.
1419 drm_atomic_set_fence_for_plane(struct drm_plane_state
*plane_state
,
1420 struct dma_fence
*fence
)
1422 if (plane_state
->fence
) {
1423 dma_fence_put(fence
);
1427 plane_state
->fence
= fence
;
1429 EXPORT_SYMBOL(drm_atomic_set_fence_for_plane
);
1432 * drm_atomic_set_crtc_for_connector - set crtc for connector
1433 * @conn_state: atomic state object for the connector
1434 * @crtc: crtc to use for the connector
1436 * Changing the assigned crtc for a connector requires us to grab the lock and
1437 * state for the new crtc, as needed. This function takes care of all these
1438 * details besides updating the pointer in the state object itself.
1441 * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK
1442 * then the w/w mutex code has detected a deadlock and the entire atomic
1443 * sequence must be restarted. All other errors are fatal.
1446 drm_atomic_set_crtc_for_connector(struct drm_connector_state
*conn_state
,
1447 struct drm_crtc
*crtc
)
1449 struct drm_crtc_state
*crtc_state
;
1451 if (conn_state
->crtc
== crtc
)
1454 if (conn_state
->crtc
) {
1455 crtc_state
= drm_atomic_get_new_crtc_state(conn_state
->state
,
1458 crtc_state
->connector_mask
&=
1459 ~(1 << drm_connector_index(conn_state
->connector
));
1461 drm_connector_put(conn_state
->connector
);
1462 conn_state
->crtc
= NULL
;
1466 crtc_state
= drm_atomic_get_crtc_state(conn_state
->state
, crtc
);
1467 if (IS_ERR(crtc_state
))
1468 return PTR_ERR(crtc_state
);
1470 crtc_state
->connector_mask
|=
1471 1 << drm_connector_index(conn_state
->connector
);
1473 drm_connector_get(conn_state
->connector
);
1474 conn_state
->crtc
= crtc
;
1476 DRM_DEBUG_ATOMIC("Link connector state %p to [CRTC:%d:%s]\n",
1477 conn_state
, crtc
->base
.id
, crtc
->name
);
1479 DRM_DEBUG_ATOMIC("Link connector state %p to [NOCRTC]\n",
1485 EXPORT_SYMBOL(drm_atomic_set_crtc_for_connector
);
1488 * drm_atomic_add_affected_connectors - add connectors for crtc
1489 * @state: atomic state
1492 * This function walks the current configuration and adds all connectors
1493 * currently using @crtc to the atomic configuration @state. Note that this
1494 * function must acquire the connection mutex. This can potentially cause
1495 * unneeded seralization if the update is just for the planes on one crtc. Hence
1496 * drivers and helpers should only call this when really needed (e.g. when a
1497 * full modeset needs to happen due to some change).
1500 * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK
1501 * then the w/w mutex code has detected a deadlock and the entire atomic
1502 * sequence must be restarted. All other errors are fatal.
1505 drm_atomic_add_affected_connectors(struct drm_atomic_state
*state
,
1506 struct drm_crtc
*crtc
)
1508 struct drm_mode_config
*config
= &state
->dev
->mode_config
;
1509 struct drm_connector
*connector
;
1510 struct drm_connector_state
*conn_state
;
1511 struct drm_connector_list_iter conn_iter
;
1512 struct drm_crtc_state
*crtc_state
;
1515 crtc_state
= drm_atomic_get_crtc_state(state
, crtc
);
1516 if (IS_ERR(crtc_state
))
1517 return PTR_ERR(crtc_state
);
1519 ret
= drm_modeset_lock(&config
->connection_mutex
, state
->acquire_ctx
);
1523 DRM_DEBUG_ATOMIC("Adding all current connectors for [CRTC:%d:%s] to %p\n",
1524 crtc
->base
.id
, crtc
->name
, state
);
1527 * Changed connectors are already in @state, so only need to look
1528 * at the connector_mask in crtc_state.
1530 drm_connector_list_iter_begin(state
->dev
, &conn_iter
);
1531 drm_for_each_connector_iter(connector
, &conn_iter
) {
1532 if (!(crtc_state
->connector_mask
& (1 << drm_connector_index(connector
))))
1535 conn_state
= drm_atomic_get_connector_state(state
, connector
);
1536 if (IS_ERR(conn_state
)) {
1537 drm_connector_list_iter_end(&conn_iter
);
1538 return PTR_ERR(conn_state
);
1541 drm_connector_list_iter_end(&conn_iter
);
1545 EXPORT_SYMBOL(drm_atomic_add_affected_connectors
);
1548 * drm_atomic_add_affected_planes - add planes for crtc
1549 * @state: atomic state
1552 * This function walks the current configuration and adds all planes
1553 * currently used by @crtc to the atomic configuration @state. This is useful
1554 * when an atomic commit also needs to check all currently enabled plane on
1555 * @crtc, e.g. when changing the mode. It's also useful when re-enabling a CRTC
1556 * to avoid special code to force-enable all planes.
1558 * Since acquiring a plane state will always also acquire the w/w mutex of the
1559 * current CRTC for that plane (if there is any) adding all the plane states for
1560 * a CRTC will not reduce parallism of atomic updates.
1563 * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK
1564 * then the w/w mutex code has detected a deadlock and the entire atomic
1565 * sequence must be restarted. All other errors are fatal.
1568 drm_atomic_add_affected_planes(struct drm_atomic_state
*state
,
1569 struct drm_crtc
*crtc
)
1571 struct drm_plane
*plane
;
1573 WARN_ON(!drm_atomic_get_new_crtc_state(state
, crtc
));
1575 drm_for_each_plane_mask(plane
, state
->dev
, crtc
->state
->plane_mask
) {
1576 struct drm_plane_state
*plane_state
=
1577 drm_atomic_get_plane_state(state
, plane
);
1579 if (IS_ERR(plane_state
))
1580 return PTR_ERR(plane_state
);
1584 EXPORT_SYMBOL(drm_atomic_add_affected_planes
);
1587 * drm_atomic_check_only - check whether a given config would work
1588 * @state: atomic configuration to check
1590 * Note that this function can return -EDEADLK if the driver needed to acquire
1591 * more locks but encountered a deadlock. The caller must then do the usual w/w
1592 * backoff dance and restart. All other errors are fatal.
1595 * 0 on success, negative error code on failure.
1597 int drm_atomic_check_only(struct drm_atomic_state
*state
)
1599 struct drm_device
*dev
= state
->dev
;
1600 struct drm_mode_config
*config
= &dev
->mode_config
;
1601 struct drm_plane
*plane
;
1602 struct drm_plane_state
*plane_state
;
1603 struct drm_crtc
*crtc
;
1604 struct drm_crtc_state
*crtc_state
;
1607 DRM_DEBUG_ATOMIC("checking %p\n", state
);
1609 for_each_new_plane_in_state(state
, plane
, plane_state
, i
) {
1610 ret
= drm_atomic_plane_check(plane
, plane_state
);
1612 DRM_DEBUG_ATOMIC("[PLANE:%d:%s] atomic core check failed\n",
1613 plane
->base
.id
, plane
->name
);
1618 for_each_new_crtc_in_state(state
, crtc
, crtc_state
, i
) {
1619 ret
= drm_atomic_crtc_check(crtc
, crtc_state
);
1621 DRM_DEBUG_ATOMIC("[CRTC:%d:%s] atomic core check failed\n",
1622 crtc
->base
.id
, crtc
->name
);
1627 if (config
->funcs
->atomic_check
)
1628 ret
= config
->funcs
->atomic_check(state
->dev
, state
);
1633 if (!state
->allow_modeset
) {
1634 for_each_new_crtc_in_state(state
, crtc
, crtc_state
, i
) {
1635 if (drm_atomic_crtc_needs_modeset(crtc_state
)) {
1636 DRM_DEBUG_ATOMIC("[CRTC:%d:%s] requires full modeset\n",
1637 crtc
->base
.id
, crtc
->name
);
1645 EXPORT_SYMBOL(drm_atomic_check_only
);
1648 * drm_atomic_commit - commit configuration atomically
1649 * @state: atomic configuration to check
1651 * Note that this function can return -EDEADLK if the driver needed to acquire
1652 * more locks but encountered a deadlock. The caller must then do the usual w/w
1653 * backoff dance and restart. All other errors are fatal.
1655 * This function will take its own reference on @state.
1656 * Callers should always release their reference with drm_atomic_state_put().
1659 * 0 on success, negative error code on failure.
1661 int drm_atomic_commit(struct drm_atomic_state
*state
)
1663 struct drm_mode_config
*config
= &state
->dev
->mode_config
;
1666 ret
= drm_atomic_check_only(state
);
1670 DRM_DEBUG_ATOMIC("committing %p\n", state
);
1672 return config
->funcs
->atomic_commit(state
->dev
, state
, false);
1674 EXPORT_SYMBOL(drm_atomic_commit
);
1677 * drm_atomic_nonblocking_commit - atomic nonblocking commit
1678 * @state: atomic configuration to check
1680 * Note that this function can return -EDEADLK if the driver needed to acquire
1681 * more locks but encountered a deadlock. The caller must then do the usual w/w
1682 * backoff dance and restart. All other errors are fatal.
1684 * This function will take its own reference on @state.
1685 * Callers should always release their reference with drm_atomic_state_put().
1688 * 0 on success, negative error code on failure.
1690 int drm_atomic_nonblocking_commit(struct drm_atomic_state
*state
)
1692 struct drm_mode_config
*config
= &state
->dev
->mode_config
;
1695 ret
= drm_atomic_check_only(state
);
1699 DRM_DEBUG_ATOMIC("committing %p nonblocking\n", state
);
1701 return config
->funcs
->atomic_commit(state
->dev
, state
, true);
1703 EXPORT_SYMBOL(drm_atomic_nonblocking_commit
);
1705 static void drm_atomic_print_state(const struct drm_atomic_state
*state
)
1707 struct drm_printer p
= drm_info_printer(state
->dev
->dev
);
1708 struct drm_plane
*plane
;
1709 struct drm_plane_state
*plane_state
;
1710 struct drm_crtc
*crtc
;
1711 struct drm_crtc_state
*crtc_state
;
1712 struct drm_connector
*connector
;
1713 struct drm_connector_state
*connector_state
;
1716 DRM_DEBUG_ATOMIC("checking %p\n", state
);
1718 for_each_new_plane_in_state(state
, plane
, plane_state
, i
)
1719 drm_atomic_plane_print_state(&p
, plane_state
);
1721 for_each_new_crtc_in_state(state
, crtc
, crtc_state
, i
)
1722 drm_atomic_crtc_print_state(&p
, crtc_state
);
1724 for_each_new_connector_in_state(state
, connector
, connector_state
, i
)
1725 drm_atomic_connector_print_state(&p
, connector_state
);
1728 static void __drm_state_dump(struct drm_device
*dev
, struct drm_printer
*p
,
1731 struct drm_mode_config
*config
= &dev
->mode_config
;
1732 struct drm_plane
*plane
;
1733 struct drm_crtc
*crtc
;
1734 struct drm_connector
*connector
;
1735 struct drm_connector_list_iter conn_iter
;
1737 if (!drm_core_check_feature(dev
, DRIVER_ATOMIC
))
1740 list_for_each_entry(plane
, &config
->plane_list
, head
) {
1742 drm_modeset_lock(&plane
->mutex
, NULL
);
1743 drm_atomic_plane_print_state(p
, plane
->state
);
1745 drm_modeset_unlock(&plane
->mutex
);
1748 list_for_each_entry(crtc
, &config
->crtc_list
, head
) {
1750 drm_modeset_lock(&crtc
->mutex
, NULL
);
1751 drm_atomic_crtc_print_state(p
, crtc
->state
);
1753 drm_modeset_unlock(&crtc
->mutex
);
1756 drm_connector_list_iter_begin(dev
, &conn_iter
);
1758 drm_modeset_lock(&dev
->mode_config
.connection_mutex
, NULL
);
1759 drm_for_each_connector_iter(connector
, &conn_iter
)
1760 drm_atomic_connector_print_state(p
, connector
->state
);
1762 drm_modeset_unlock(&dev
->mode_config
.connection_mutex
);
1763 drm_connector_list_iter_end(&conn_iter
);
1767 * drm_state_dump - dump entire device atomic state
1768 * @dev: the drm device
1769 * @p: where to print the state to
1771 * Just for debugging. Drivers might want an option to dump state
1772 * to dmesg in case of error irq's. (Hint, you probably want to
1775 * The caller must drm_modeset_lock_all(), or if this is called
1776 * from error irq handler, it should not be enabled by default.
1777 * (Ie. if you are debugging errors you might not care that this
1778 * is racey. But calling this without all modeset locks held is
1779 * not inherently safe.)
1781 void drm_state_dump(struct drm_device
*dev
, struct drm_printer
*p
)
1783 __drm_state_dump(dev
, p
, false);
1785 EXPORT_SYMBOL(drm_state_dump
);
1787 #ifdef CONFIG_DEBUG_FS
1788 static int drm_state_info(struct seq_file
*m
, void *data
)
1790 struct drm_info_node
*node
= (struct drm_info_node
*) m
->private;
1791 struct drm_device
*dev
= node
->minor
->dev
;
1792 struct drm_printer p
= drm_seq_file_printer(m
);
1794 __drm_state_dump(dev
, &p
, true);
1799 /* any use in debugfs files to dump individual planes/crtc/etc? */
1800 static const struct drm_info_list drm_atomic_debugfs_list
[] = {
1801 {"state", drm_state_info
, 0},
1804 int drm_atomic_debugfs_init(struct drm_minor
*minor
)
1806 return drm_debugfs_create_files(drm_atomic_debugfs_list
,
1807 ARRAY_SIZE(drm_atomic_debugfs_list
),
1808 minor
->debugfs_root
, minor
);
1813 * The big monstor ioctl
1816 static struct drm_pending_vblank_event
*create_vblank_event(
1817 struct drm_crtc
*crtc
, uint64_t user_data
)
1819 struct drm_pending_vblank_event
*e
= NULL
;
1821 e
= kzalloc(sizeof *e
, GFP_KERNEL
);
1825 e
->event
.base
.type
= DRM_EVENT_FLIP_COMPLETE
;
1826 e
->event
.base
.length
= sizeof(e
->event
);
1827 e
->event
.vbl
.crtc_id
= crtc
->base
.id
;
1828 e
->event
.vbl
.user_data
= user_data
;
1833 int drm_atomic_connector_commit_dpms(struct drm_atomic_state
*state
,
1834 struct drm_connector
*connector
,
1837 struct drm_connector
*tmp_connector
;
1838 struct drm_connector_state
*new_conn_state
;
1839 struct drm_crtc
*crtc
;
1840 struct drm_crtc_state
*crtc_state
;
1841 int i
, ret
, old_mode
= connector
->dpms
;
1842 bool active
= false;
1844 ret
= drm_modeset_lock(&state
->dev
->mode_config
.connection_mutex
,
1845 state
->acquire_ctx
);
1849 if (mode
!= DRM_MODE_DPMS_ON
)
1850 mode
= DRM_MODE_DPMS_OFF
;
1851 connector
->dpms
= mode
;
1853 crtc
= connector
->state
->crtc
;
1856 ret
= drm_atomic_add_affected_connectors(state
, crtc
);
1860 crtc_state
= drm_atomic_get_crtc_state(state
, crtc
);
1861 if (IS_ERR(crtc_state
)) {
1862 ret
= PTR_ERR(crtc_state
);
1866 for_each_new_connector_in_state(state
, tmp_connector
, new_conn_state
, i
) {
1867 if (new_conn_state
->crtc
!= crtc
)
1869 if (tmp_connector
->dpms
== DRM_MODE_DPMS_ON
) {
1875 crtc_state
->active
= active
;
1876 ret
= drm_atomic_commit(state
);
1879 connector
->dpms
= old_mode
;
1883 int drm_atomic_set_property(struct drm_atomic_state
*state
,
1884 struct drm_mode_object
*obj
,
1885 struct drm_property
*prop
,
1886 uint64_t prop_value
)
1888 struct drm_mode_object
*ref
;
1891 if (!drm_property_change_valid_get(prop
, prop_value
, &ref
))
1894 switch (obj
->type
) {
1895 case DRM_MODE_OBJECT_CONNECTOR
: {
1896 struct drm_connector
*connector
= obj_to_connector(obj
);
1897 struct drm_connector_state
*connector_state
;
1899 connector_state
= drm_atomic_get_connector_state(state
, connector
);
1900 if (IS_ERR(connector_state
)) {
1901 ret
= PTR_ERR(connector_state
);
1905 ret
= drm_atomic_connector_set_property(connector
,
1906 connector_state
, prop
, prop_value
);
1909 case DRM_MODE_OBJECT_CRTC
: {
1910 struct drm_crtc
*crtc
= obj_to_crtc(obj
);
1911 struct drm_crtc_state
*crtc_state
;
1913 crtc_state
= drm_atomic_get_crtc_state(state
, crtc
);
1914 if (IS_ERR(crtc_state
)) {
1915 ret
= PTR_ERR(crtc_state
);
1919 ret
= drm_atomic_crtc_set_property(crtc
,
1920 crtc_state
, prop
, prop_value
);
1923 case DRM_MODE_OBJECT_PLANE
: {
1924 struct drm_plane
*plane
= obj_to_plane(obj
);
1925 struct drm_plane_state
*plane_state
;
1927 plane_state
= drm_atomic_get_plane_state(state
, plane
);
1928 if (IS_ERR(plane_state
)) {
1929 ret
= PTR_ERR(plane_state
);
1933 ret
= drm_atomic_plane_set_property(plane
,
1934 plane_state
, prop
, prop_value
);
1942 drm_property_change_valid_put(prop
, ref
);
1947 * drm_atomic_clean_old_fb -- Unset old_fb pointers and set plane->fb pointers.
1949 * @dev: drm device to check.
1950 * @plane_mask: plane mask for planes that were updated.
1951 * @ret: return value, can be -EDEADLK for a retry.
1953 * Before doing an update &drm_plane.old_fb is set to &drm_plane.fb, but before
1954 * dropping the locks old_fb needs to be set to NULL and plane->fb updated. This
1955 * is a common operation for each atomic update, so this call is split off as a
1958 void drm_atomic_clean_old_fb(struct drm_device
*dev
,
1959 unsigned plane_mask
,
1962 struct drm_plane
*plane
;
1964 /* if succeeded, fixup legacy plane crtc/fb ptrs before dropping
1965 * locks (ie. while it is still safe to deref plane->state). We
1966 * need to do this here because the driver entry points cannot
1967 * distinguish between legacy and atomic ioctls.
1969 drm_for_each_plane_mask(plane
, dev
, plane_mask
) {
1971 struct drm_framebuffer
*new_fb
= plane
->state
->fb
;
1973 drm_framebuffer_get(new_fb
);
1975 plane
->crtc
= plane
->state
->crtc
;
1978 drm_framebuffer_put(plane
->old_fb
);
1980 plane
->old_fb
= NULL
;
1983 EXPORT_SYMBOL(drm_atomic_clean_old_fb
);
1986 * DOC: explicit fencing properties
1988 * Explicit fencing allows userspace to control the buffer synchronization
1989 * between devices. A Fence or a group of fences are transfered to/from
1990 * userspace using Sync File fds and there are two DRM properties for that.
1991 * IN_FENCE_FD on each DRM Plane to send fences to the kernel and
1992 * OUT_FENCE_PTR on each DRM CRTC to receive fences from the kernel.
1994 * As a contrast, with implicit fencing the kernel keeps track of any
1995 * ongoing rendering, and automatically ensures that the atomic update waits
1996 * for any pending rendering to complete. For shared buffers represented with
1997 * a &struct dma_buf this is tracked in &struct reservation_object.
1998 * Implicit syncing is how Linux traditionally worked (e.g. DRI2/3 on X.org),
1999 * whereas explicit fencing is what Android wants.
2002 * Use this property to pass a fence that DRM should wait on before
2003 * proceeding with the Atomic Commit request and show the framebuffer for
2004 * the plane on the screen. The fence can be either a normal fence or a
2005 * merged one, the sync_file framework will handle both cases and use a
2006 * fence_array if a merged fence is received. Passing -1 here means no
2007 * fences to wait on.
2009 * If the Atomic Commit request has the DRM_MODE_ATOMIC_TEST_ONLY flag
2010 * it will only check if the Sync File is a valid one.
2012 * On the driver side the fence is stored on the @fence parameter of
2013 * &struct drm_plane_state. Drivers which also support implicit fencing
2014 * should set the implicit fence using drm_atomic_set_fence_for_plane(),
2015 * to make sure there's consistent behaviour between drivers in precedence
2016 * of implicit vs. explicit fencing.
2019 * Use this property to pass a file descriptor pointer to DRM. Once the
2020 * Atomic Commit request call returns OUT_FENCE_PTR will be filled with
2021 * the file descriptor number of a Sync File. This Sync File contains the
2022 * CRTC fence that will be signaled when all framebuffers present on the
2023 * Atomic Commit * request for that given CRTC are scanned out on the
2026 * The Atomic Commit request fails if a invalid pointer is passed. If the
2027 * Atomic Commit request fails for any other reason the out fence fd
2028 * returned will be -1. On a Atomic Commit with the
2029 * DRM_MODE_ATOMIC_TEST_ONLY flag the out fence will also be set to -1.
2031 * Note that out-fences don't have a special interface to drivers and are
2032 * internally represented by a &struct drm_pending_vblank_event in struct
2033 * &drm_crtc_state, which is also used by the nonblocking atomic commit
2034 * helpers and for the DRM event handling for existing userspace.
2037 struct drm_out_fence_state
{
2038 s32 __user
*out_fence_ptr
;
2039 struct sync_file
*sync_file
;
2043 static int setup_out_fence(struct drm_out_fence_state
*fence_state
,
2044 struct dma_fence
*fence
)
2046 fence_state
->fd
= get_unused_fd_flags(O_CLOEXEC
);
2047 if (fence_state
->fd
< 0)
2048 return fence_state
->fd
;
2050 if (put_user(fence_state
->fd
, fence_state
->out_fence_ptr
))
2053 fence_state
->sync_file
= sync_file_create(fence
);
2054 if (!fence_state
->sync_file
)
2060 static int prepare_crtc_signaling(struct drm_device
*dev
,
2061 struct drm_atomic_state
*state
,
2062 struct drm_mode_atomic
*arg
,
2063 struct drm_file
*file_priv
,
2064 struct drm_out_fence_state
**fence_state
,
2065 unsigned int *num_fences
)
2067 struct drm_crtc
*crtc
;
2068 struct drm_crtc_state
*crtc_state
;
2071 if (arg
->flags
& DRM_MODE_ATOMIC_TEST_ONLY
)
2074 for_each_new_crtc_in_state(state
, crtc
, crtc_state
, i
) {
2075 s32 __user
*fence_ptr
;
2077 fence_ptr
= get_out_fence_for_crtc(crtc_state
->state
, crtc
);
2079 if (arg
->flags
& DRM_MODE_PAGE_FLIP_EVENT
|| fence_ptr
) {
2080 struct drm_pending_vblank_event
*e
;
2082 e
= create_vblank_event(crtc
, arg
->user_data
);
2086 crtc_state
->event
= e
;
2089 if (arg
->flags
& DRM_MODE_PAGE_FLIP_EVENT
) {
2090 struct drm_pending_vblank_event
*e
= crtc_state
->event
;
2095 ret
= drm_event_reserve_init(dev
, file_priv
, &e
->base
,
2099 crtc_state
->event
= NULL
;
2105 struct dma_fence
*fence
;
2106 struct drm_out_fence_state
*f
;
2108 f
= krealloc(*fence_state
,
2109 sizeof(**fence_state
) * (*num_fences
+ 1),
2114 memset(&f
[*num_fences
], 0, sizeof(*f
));
2116 f
[*num_fences
].out_fence_ptr
= fence_ptr
;
2119 fence
= drm_crtc_create_fence(crtc
);
2123 ret
= setup_out_fence(&f
[(*num_fences
)++], fence
);
2125 dma_fence_put(fence
);
2129 crtc_state
->event
->base
.fence
= fence
;
2136 * Having this flag means user mode pends on event which will never
2137 * reach due to lack of at least one CRTC for signaling
2139 if (c
== 0 && (arg
->flags
& DRM_MODE_PAGE_FLIP_EVENT
))
2145 static void complete_crtc_signaling(struct drm_device
*dev
,
2146 struct drm_atomic_state
*state
,
2147 struct drm_out_fence_state
*fence_state
,
2148 unsigned int num_fences
,
2151 struct drm_crtc
*crtc
;
2152 struct drm_crtc_state
*crtc_state
;
2156 for (i
= 0; i
< num_fences
; i
++)
2157 fd_install(fence_state
[i
].fd
,
2158 fence_state
[i
].sync_file
->file
);
2164 for_each_new_crtc_in_state(state
, crtc
, crtc_state
, i
) {
2165 struct drm_pending_vblank_event
*event
= crtc_state
->event
;
2167 * Free the allocated event. drm_atomic_helper_setup_commit
2168 * can allocate an event too, so only free it if it's ours
2169 * to prevent a double free in drm_atomic_state_clear.
2171 if (event
&& (event
->base
.fence
|| event
->base
.file_priv
)) {
2172 drm_event_cancel_free(dev
, &event
->base
);
2173 crtc_state
->event
= NULL
;
2180 for (i
= 0; i
< num_fences
; i
++) {
2181 if (fence_state
[i
].sync_file
)
2182 fput(fence_state
[i
].sync_file
->file
);
2183 if (fence_state
[i
].fd
>= 0)
2184 put_unused_fd(fence_state
[i
].fd
);
2186 /* If this fails log error to the user */
2187 if (fence_state
[i
].out_fence_ptr
&&
2188 put_user(-1, fence_state
[i
].out_fence_ptr
))
2189 DRM_DEBUG_ATOMIC("Couldn't clear out_fence_ptr\n");
2195 int drm_mode_atomic_ioctl(struct drm_device
*dev
,
2196 void *data
, struct drm_file
*file_priv
)
2198 struct drm_mode_atomic
*arg
= data
;
2199 uint32_t __user
*objs_ptr
= (uint32_t __user
*)(unsigned long)(arg
->objs_ptr
);
2200 uint32_t __user
*count_props_ptr
= (uint32_t __user
*)(unsigned long)(arg
->count_props_ptr
);
2201 uint32_t __user
*props_ptr
= (uint32_t __user
*)(unsigned long)(arg
->props_ptr
);
2202 uint64_t __user
*prop_values_ptr
= (uint64_t __user
*)(unsigned long)(arg
->prop_values_ptr
);
2203 unsigned int copied_objs
, copied_props
;
2204 struct drm_atomic_state
*state
;
2205 struct drm_modeset_acquire_ctx ctx
;
2206 struct drm_plane
*plane
;
2207 struct drm_out_fence_state
*fence_state
;
2208 unsigned plane_mask
;
2210 unsigned int i
, j
, num_fences
;
2212 /* disallow for drivers not supporting atomic: */
2213 if (!drm_core_check_feature(dev
, DRIVER_ATOMIC
))
2216 /* disallow for userspace that has not enabled atomic cap (even
2217 * though this may be a bit overkill, since legacy userspace
2218 * wouldn't know how to call this ioctl)
2220 if (!file_priv
->atomic
)
2223 if (arg
->flags
& ~DRM_MODE_ATOMIC_FLAGS
)
2229 if ((arg
->flags
& DRM_MODE_PAGE_FLIP_ASYNC
) &&
2230 !dev
->mode_config
.async_page_flip
)
2233 /* can't test and expect an event at the same time. */
2234 if ((arg
->flags
& DRM_MODE_ATOMIC_TEST_ONLY
) &&
2235 (arg
->flags
& DRM_MODE_PAGE_FLIP_EVENT
))
2238 drm_modeset_acquire_init(&ctx
, DRM_MODESET_ACQUIRE_INTERRUPTIBLE
);
2240 state
= drm_atomic_state_alloc(dev
);
2244 state
->acquire_ctx
= &ctx
;
2245 state
->allow_modeset
= !!(arg
->flags
& DRM_MODE_ATOMIC_ALLOW_MODESET
);
2254 for (i
= 0; i
< arg
->count_objs
; i
++) {
2255 uint32_t obj_id
, count_props
;
2256 struct drm_mode_object
*obj
;
2258 if (get_user(obj_id
, objs_ptr
+ copied_objs
)) {
2263 obj
= drm_mode_object_find(dev
, file_priv
, obj_id
, DRM_MODE_OBJECT_ANY
);
2269 if (!obj
->properties
) {
2270 drm_mode_object_put(obj
);
2275 if (get_user(count_props
, count_props_ptr
+ copied_objs
)) {
2276 drm_mode_object_put(obj
);
2283 for (j
= 0; j
< count_props
; j
++) {
2285 uint64_t prop_value
;
2286 struct drm_property
*prop
;
2288 if (get_user(prop_id
, props_ptr
+ copied_props
)) {
2289 drm_mode_object_put(obj
);
2294 prop
= drm_mode_obj_find_prop_id(obj
, prop_id
);
2296 drm_mode_object_put(obj
);
2301 if (copy_from_user(&prop_value
,
2302 prop_values_ptr
+ copied_props
,
2303 sizeof(prop_value
))) {
2304 drm_mode_object_put(obj
);
2309 ret
= drm_atomic_set_property(state
, obj
, prop
,
2312 drm_mode_object_put(obj
);
2319 if (obj
->type
== DRM_MODE_OBJECT_PLANE
&& count_props
&&
2320 !(arg
->flags
& DRM_MODE_ATOMIC_TEST_ONLY
)) {
2321 plane
= obj_to_plane(obj
);
2322 plane_mask
|= (1 << drm_plane_index(plane
));
2323 plane
->old_fb
= plane
->fb
;
2325 drm_mode_object_put(obj
);
2328 ret
= prepare_crtc_signaling(dev
, state
, arg
, file_priv
, &fence_state
,
2333 if (arg
->flags
& DRM_MODE_ATOMIC_TEST_ONLY
) {
2334 ret
= drm_atomic_check_only(state
);
2335 } else if (arg
->flags
& DRM_MODE_ATOMIC_NONBLOCK
) {
2336 ret
= drm_atomic_nonblocking_commit(state
);
2338 if (unlikely(drm_debug
& DRM_UT_STATE
))
2339 drm_atomic_print_state(state
);
2341 ret
= drm_atomic_commit(state
);
2345 drm_atomic_clean_old_fb(dev
, plane_mask
, ret
);
2347 complete_crtc_signaling(dev
, state
, fence_state
, num_fences
, !ret
);
2349 if (ret
== -EDEADLK
) {
2350 drm_atomic_state_clear(state
);
2351 ret
= drm_modeset_backoff(&ctx
);
2356 drm_atomic_state_put(state
);
2358 drm_modeset_drop_locks(&ctx
);
2359 drm_modeset_acquire_fini(&ctx
);