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"
36 #include "drm_internal.h"
38 void __drm_crtc_commit_free(struct kref *kref)
40 struct drm_crtc_commit *commit =
41 container_of(kref, struct drm_crtc_commit, ref);
45 EXPORT_SYMBOL(__drm_crtc_commit_free);
48 * drm_atomic_state_default_release -
49 * release memory initialized by drm_atomic_state_init
50 * @state: atomic state
52 * Free all the memory allocated by drm_atomic_state_init.
53 * This should only be used by drivers which are still subclassing
54 * &drm_atomic_state and haven't switched to &drm_private_state yet.
56 void drm_atomic_state_default_release(struct drm_atomic_state *state)
58 kfree(state->connectors);
61 kfree(state->private_objs);
63 EXPORT_SYMBOL(drm_atomic_state_default_release);
66 * drm_atomic_state_init - init new atomic state
68 * @state: atomic state
70 * Default implementation for filling in a new atomic state.
71 * This should only be used by drivers which are still subclassing
72 * &drm_atomic_state and haven't switched to &drm_private_state yet.
75 drm_atomic_state_init(struct drm_device *dev, struct drm_atomic_state *state)
77 kref_init(&state->ref);
79 /* TODO legacy paths should maybe do a better job about
80 * setting this appropriately?
82 state->allow_modeset = true;
84 state->crtcs = kcalloc(dev->mode_config.num_crtc,
85 sizeof(*state->crtcs), GFP_KERNEL);
88 state->planes = kcalloc(dev->mode_config.num_total_plane,
89 sizeof(*state->planes), GFP_KERNEL);
95 DRM_DEBUG_ATOMIC("Allocated atomic state %p\n", state);
99 drm_atomic_state_default_release(state);
102 EXPORT_SYMBOL(drm_atomic_state_init);
105 * drm_atomic_state_alloc - allocate atomic state
108 * This allocates an empty atomic state to track updates.
110 struct drm_atomic_state *
111 drm_atomic_state_alloc(struct drm_device *dev)
113 struct drm_mode_config *config = &dev->mode_config;
115 if (!config->funcs->atomic_state_alloc) {
116 struct drm_atomic_state *state;
118 state = kzalloc(sizeof(*state), GFP_KERNEL);
121 if (drm_atomic_state_init(dev, state) < 0) {
128 return config->funcs->atomic_state_alloc(dev);
130 EXPORT_SYMBOL(drm_atomic_state_alloc);
133 * drm_atomic_state_default_clear - clear base atomic state
134 * @state: atomic state
136 * Default implementation for clearing atomic state.
137 * This should only be used by drivers which are still subclassing
138 * &drm_atomic_state and haven't switched to &drm_private_state yet.
140 void drm_atomic_state_default_clear(struct drm_atomic_state *state)
142 struct drm_device *dev = state->dev;
143 struct drm_mode_config *config = &dev->mode_config;
146 DRM_DEBUG_ATOMIC("Clearing atomic state %p\n", state);
148 for (i = 0; i < state->num_connector; i++) {
149 struct drm_connector *connector = state->connectors[i].ptr;
154 connector->funcs->atomic_destroy_state(connector,
155 state->connectors[i].state);
156 state->connectors[i].ptr = NULL;
157 state->connectors[i].state = NULL;
158 drm_connector_put(connector);
161 for (i = 0; i < config->num_crtc; i++) {
162 struct drm_crtc *crtc = state->crtcs[i].ptr;
167 crtc->funcs->atomic_destroy_state(crtc,
168 state->crtcs[i].state);
170 state->crtcs[i].ptr = NULL;
171 state->crtcs[i].state = NULL;
174 for (i = 0; i < config->num_total_plane; i++) {
175 struct drm_plane *plane = state->planes[i].ptr;
180 plane->funcs->atomic_destroy_state(plane,
181 state->planes[i].state);
182 state->planes[i].ptr = NULL;
183 state->planes[i].state = NULL;
186 for (i = 0; i < state->num_private_objs; i++) {
187 struct drm_private_obj *obj = state->private_objs[i].ptr;
189 obj->funcs->atomic_destroy_state(obj,
190 state->private_objs[i].state);
191 state->private_objs[i].ptr = NULL;
192 state->private_objs[i].state = NULL;
194 state->num_private_objs = 0;
196 if (state->fake_commit) {
197 drm_crtc_commit_put(state->fake_commit);
198 state->fake_commit = NULL;
201 EXPORT_SYMBOL(drm_atomic_state_default_clear);
204 * drm_atomic_state_clear - clear state object
205 * @state: atomic state
207 * When the w/w mutex algorithm detects a deadlock we need to back off and drop
208 * all locks. So someone else could sneak in and change the current modeset
209 * configuration. Which means that all the state assembled in @state is no
210 * longer an atomic update to the current state, but to some arbitrary earlier
211 * state. Which could break assumptions the driver's
212 * &drm_mode_config_funcs.atomic_check likely relies on.
214 * Hence we must clear all cached state and completely start over, using this
217 void drm_atomic_state_clear(struct drm_atomic_state *state)
219 struct drm_device *dev = state->dev;
220 struct drm_mode_config *config = &dev->mode_config;
222 if (config->funcs->atomic_state_clear)
223 config->funcs->atomic_state_clear(state);
225 drm_atomic_state_default_clear(state);
227 EXPORT_SYMBOL(drm_atomic_state_clear);
230 * __drm_atomic_state_free - free all memory for an atomic state
231 * @ref: This atomic state to deallocate
233 * This frees all memory associated with an atomic state, including all the
234 * per-object state for planes, crtcs and connectors.
236 void __drm_atomic_state_free(struct kref *ref)
238 struct drm_atomic_state *state = container_of(ref, typeof(*state), ref);
239 struct drm_mode_config *config = &state->dev->mode_config;
241 drm_atomic_state_clear(state);
243 DRM_DEBUG_ATOMIC("Freeing atomic state %p\n", state);
245 if (config->funcs->atomic_state_free) {
246 config->funcs->atomic_state_free(state);
248 drm_atomic_state_default_release(state);
252 EXPORT_SYMBOL(__drm_atomic_state_free);
255 * drm_atomic_get_crtc_state - get crtc state
256 * @state: global atomic state object
257 * @crtc: crtc to get state object for
259 * This function returns the crtc state for the given crtc, allocating it if
260 * needed. It will also grab the relevant crtc lock to make sure that the state
265 * Either the allocated state or the error code encoded into the pointer. When
266 * the error is EDEADLK then the w/w mutex code has detected a deadlock and the
267 * entire atomic sequence must be restarted. All other errors are fatal.
269 struct drm_crtc_state *
270 drm_atomic_get_crtc_state(struct drm_atomic_state *state,
271 struct drm_crtc *crtc)
273 int ret, index = drm_crtc_index(crtc);
274 struct drm_crtc_state *crtc_state;
276 WARN_ON(!state->acquire_ctx);
278 crtc_state = drm_atomic_get_existing_crtc_state(state, crtc);
282 ret = drm_modeset_lock(&crtc->mutex, state->acquire_ctx);
286 crtc_state = crtc->funcs->atomic_duplicate_state(crtc);
288 return ERR_PTR(-ENOMEM);
290 state->crtcs[index].state = crtc_state;
291 state->crtcs[index].old_state = crtc->state;
292 state->crtcs[index].new_state = crtc_state;
293 state->crtcs[index].ptr = crtc;
294 crtc_state->state = state;
296 DRM_DEBUG_ATOMIC("Added [CRTC:%d:%s] %p state to %p\n",
297 crtc->base.id, crtc->name, crtc_state, state);
301 EXPORT_SYMBOL(drm_atomic_get_crtc_state);
303 static void set_out_fence_for_crtc(struct drm_atomic_state *state,
304 struct drm_crtc *crtc, s32 __user *fence_ptr)
306 state->crtcs[drm_crtc_index(crtc)].out_fence_ptr = fence_ptr;
309 static s32 __user *get_out_fence_for_crtc(struct drm_atomic_state *state,
310 struct drm_crtc *crtc)
312 s32 __user *fence_ptr;
314 fence_ptr = state->crtcs[drm_crtc_index(crtc)].out_fence_ptr;
315 state->crtcs[drm_crtc_index(crtc)].out_fence_ptr = NULL;
321 * drm_atomic_set_mode_for_crtc - set mode for CRTC
322 * @state: the CRTC whose incoming state to update
323 * @mode: kernel-internal mode to use for the CRTC, or NULL to disable
325 * Set a mode (originating from the kernel) on the desired CRTC state and update
326 * the enable property.
329 * Zero on success, error code on failure. Cannot return -EDEADLK.
331 int drm_atomic_set_mode_for_crtc(struct drm_crtc_state *state,
332 const struct drm_display_mode *mode)
334 struct drm_crtc *crtc = state->crtc;
335 struct drm_mode_modeinfo umode;
337 /* Early return for no change. */
338 if (mode && memcmp(&state->mode, mode, sizeof(*mode)) == 0)
341 drm_property_blob_put(state->mode_blob);
342 state->mode_blob = NULL;
345 drm_mode_convert_to_umode(&umode, mode);
347 drm_property_create_blob(state->crtc->dev,
350 if (IS_ERR(state->mode_blob))
351 return PTR_ERR(state->mode_blob);
353 drm_mode_copy(&state->mode, mode);
354 state->enable = true;
355 DRM_DEBUG_ATOMIC("Set [MODE:%s] for [CRTC:%d:%s] state %p\n",
356 mode->name, crtc->base.id, crtc->name, state);
358 memset(&state->mode, 0, sizeof(state->mode));
359 state->enable = false;
360 DRM_DEBUG_ATOMIC("Set [NOMODE] for [CRTC:%d:%s] state %p\n",
361 crtc->base.id, crtc->name, state);
366 EXPORT_SYMBOL(drm_atomic_set_mode_for_crtc);
369 * drm_atomic_set_mode_prop_for_crtc - set mode for CRTC
370 * @state: the CRTC whose incoming state to update
371 * @blob: pointer to blob property to use for mode
373 * Set a mode (originating from a blob property) on the desired CRTC state.
374 * This function will take a reference on the blob property for the CRTC state,
375 * and release the reference held on the state's existing mode property, if any
379 * Zero on success, error code on failure. Cannot return -EDEADLK.
381 int drm_atomic_set_mode_prop_for_crtc(struct drm_crtc_state *state,
382 struct drm_property_blob *blob)
384 struct drm_crtc *crtc = state->crtc;
386 if (blob == state->mode_blob)
389 drm_property_blob_put(state->mode_blob);
390 state->mode_blob = NULL;
392 memset(&state->mode, 0, sizeof(state->mode));
395 if (blob->length != sizeof(struct drm_mode_modeinfo) ||
396 drm_mode_convert_umode(state->crtc->dev, &state->mode,
400 state->mode_blob = drm_property_blob_get(blob);
401 state->enable = true;
402 DRM_DEBUG_ATOMIC("Set [MODE:%s] for [CRTC:%d:%s] state %p\n",
403 state->mode.name, crtc->base.id, crtc->name,
406 state->enable = false;
407 DRM_DEBUG_ATOMIC("Set [NOMODE] for [CRTC:%d:%s] state %p\n",
408 crtc->base.id, crtc->name, state);
413 EXPORT_SYMBOL(drm_atomic_set_mode_prop_for_crtc);
416 * drm_atomic_replace_property_blob_from_id - lookup the new blob and replace the old one with it
418 * @blob: a pointer to the member blob to be replaced
419 * @blob_id: ID of the new blob
420 * @expected_size: total expected size of the blob data (in bytes)
421 * @expected_elem_size: expected element size of the blob data (in bytes)
422 * @replaced: did the blob get replaced?
424 * Replace @blob with another blob with the ID @blob_id. If @blob_id is zero
425 * @blob becomes NULL.
427 * If @expected_size is positive the new blob length is expected to be equal
428 * to @expected_size bytes. If @expected_elem_size is positive the new blob
429 * length is expected to be a multiple of @expected_elem_size bytes. Otherwise
430 * an error is returned.
432 * @replaced will indicate to the caller whether the blob was replaced or not.
433 * If the old and new blobs were in fact the same blob @replaced will be false
434 * otherwise it will be true.
437 * Zero on success, error code on failure.
440 drm_atomic_replace_property_blob_from_id(struct drm_device *dev,
441 struct drm_property_blob **blob,
443 ssize_t expected_size,
444 ssize_t expected_elem_size,
447 struct drm_property_blob *new_blob = NULL;
450 new_blob = drm_property_lookup_blob(dev, blob_id);
451 if (new_blob == NULL)
454 if (expected_size > 0 &&
455 new_blob->length != expected_size) {
456 drm_property_blob_put(new_blob);
459 if (expected_elem_size > 0 &&
460 new_blob->length % expected_elem_size != 0) {
461 drm_property_blob_put(new_blob);
466 *replaced |= drm_property_replace_blob(blob, new_blob);
467 drm_property_blob_put(new_blob);
473 * drm_atomic_crtc_set_property - set property on CRTC
474 * @crtc: the drm CRTC to set a property on
475 * @state: the state object to update with the new property value
476 * @property: the property to set
477 * @val: the new property value
479 * This function handles generic/core properties and calls out to driver's
480 * &drm_crtc_funcs.atomic_set_property for driver properties. To ensure
481 * consistent behavior you must call this function rather than the driver hook
485 * Zero on success, error code on failure
487 int drm_atomic_crtc_set_property(struct drm_crtc *crtc,
488 struct drm_crtc_state *state, struct drm_property *property,
491 struct drm_device *dev = crtc->dev;
492 struct drm_mode_config *config = &dev->mode_config;
493 bool replaced = false;
496 if (property == config->prop_active)
498 else if (property == config->prop_mode_id) {
499 struct drm_property_blob *mode =
500 drm_property_lookup_blob(dev, val);
501 ret = drm_atomic_set_mode_prop_for_crtc(state, mode);
502 drm_property_blob_put(mode);
504 } else if (property == config->degamma_lut_property) {
505 ret = drm_atomic_replace_property_blob_from_id(dev,
508 -1, sizeof(struct drm_color_lut),
510 state->color_mgmt_changed |= replaced;
512 } else if (property == config->ctm_property) {
513 ret = drm_atomic_replace_property_blob_from_id(dev,
516 sizeof(struct drm_color_ctm), -1,
518 state->color_mgmt_changed |= replaced;
520 } else if (property == config->gamma_lut_property) {
521 ret = drm_atomic_replace_property_blob_from_id(dev,
524 -1, sizeof(struct drm_color_lut),
526 state->color_mgmt_changed |= replaced;
528 } else if (property == config->prop_out_fence_ptr) {
529 s32 __user *fence_ptr = u64_to_user_ptr(val);
534 if (put_user(-1, fence_ptr))
537 set_out_fence_for_crtc(state->state, crtc, fence_ptr);
538 } else if (crtc->funcs->atomic_set_property) {
539 return crtc->funcs->atomic_set_property(crtc, state, property, val);
541 DRM_DEBUG_ATOMIC("[CRTC:%d:%s] unknown property [PROP:%d:%s]]\n",
542 crtc->base.id, crtc->name,
543 property->base.id, property->name);
549 EXPORT_SYMBOL(drm_atomic_crtc_set_property);
552 * drm_atomic_crtc_get_property - get property value from CRTC state
553 * @crtc: the drm CRTC to set a property on
554 * @state: the state object to get the property value from
555 * @property: the property to set
556 * @val: return location for the property value
558 * This function handles generic/core properties and calls out to driver's
559 * &drm_crtc_funcs.atomic_get_property for driver properties. To ensure
560 * consistent behavior you must call this function rather than the driver hook
564 * Zero on success, error code on failure
567 drm_atomic_crtc_get_property(struct drm_crtc *crtc,
568 const struct drm_crtc_state *state,
569 struct drm_property *property, uint64_t *val)
571 struct drm_device *dev = crtc->dev;
572 struct drm_mode_config *config = &dev->mode_config;
574 if (property == config->prop_active)
575 *val = state->active;
576 else if (property == config->prop_mode_id)
577 *val = (state->mode_blob) ? state->mode_blob->base.id : 0;
578 else if (property == config->degamma_lut_property)
579 *val = (state->degamma_lut) ? state->degamma_lut->base.id : 0;
580 else if (property == config->ctm_property)
581 *val = (state->ctm) ? state->ctm->base.id : 0;
582 else if (property == config->gamma_lut_property)
583 *val = (state->gamma_lut) ? state->gamma_lut->base.id : 0;
584 else if (property == config->prop_out_fence_ptr)
586 else if (crtc->funcs->atomic_get_property)
587 return crtc->funcs->atomic_get_property(crtc, state, property, val);
595 * drm_atomic_crtc_check - check crtc state
596 * @crtc: crtc to check
597 * @state: crtc state to check
599 * Provides core sanity checks for crtc state.
602 * Zero on success, error code on failure
604 static int drm_atomic_crtc_check(struct drm_crtc *crtc,
605 struct drm_crtc_state *state)
607 /* NOTE: we explicitly don't enforce constraints such as primary
608 * layer covering entire screen, since that is something we want
609 * to allow (on hw that supports it). For hw that does not, it
610 * should be checked in driver's crtc->atomic_check() vfunc.
612 * TODO: Add generic modeset state checks once we support those.
615 if (state->active && !state->enable) {
616 DRM_DEBUG_ATOMIC("[CRTC:%d:%s] active without enabled\n",
617 crtc->base.id, crtc->name);
621 /* The state->enable vs. state->mode_blob checks can be WARN_ON,
622 * as this is a kernel-internal detail that userspace should never
623 * be able to trigger. */
624 if (drm_core_check_feature(crtc->dev, DRIVER_ATOMIC) &&
625 WARN_ON(state->enable && !state->mode_blob)) {
626 DRM_DEBUG_ATOMIC("[CRTC:%d:%s] enabled without mode blob\n",
627 crtc->base.id, crtc->name);
631 if (drm_core_check_feature(crtc->dev, DRIVER_ATOMIC) &&
632 WARN_ON(!state->enable && state->mode_blob)) {
633 DRM_DEBUG_ATOMIC("[CRTC:%d:%s] disabled with mode blob\n",
634 crtc->base.id, crtc->name);
639 * Reject event generation for when a CRTC is off and stays off.
640 * It wouldn't be hard to implement this, but userspace has a track
641 * record of happily burning through 100% cpu (or worse, crash) when the
642 * display pipe is suspended. To avoid all that fun just reject updates
643 * that ask for events since likely that indicates a bug in the
644 * compositor's drawing loop. This is consistent with the vblank IOCTL
645 * and legacy page_flip IOCTL which also reject service on a disabled
648 if (state->event && !state->active && !crtc->state->active) {
649 DRM_DEBUG_ATOMIC("[CRTC:%d:%s] requesting event but off\n",
650 crtc->base.id, crtc->name);
657 static void drm_atomic_crtc_print_state(struct drm_printer *p,
658 const struct drm_crtc_state *state)
660 struct drm_crtc *crtc = state->crtc;
662 drm_printf(p, "crtc[%u]: %s\n", crtc->base.id, crtc->name);
663 drm_printf(p, "\tenable=%d\n", state->enable);
664 drm_printf(p, "\tactive=%d\n", state->active);
665 drm_printf(p, "\tplanes_changed=%d\n", state->planes_changed);
666 drm_printf(p, "\tmode_changed=%d\n", state->mode_changed);
667 drm_printf(p, "\tactive_changed=%d\n", state->active_changed);
668 drm_printf(p, "\tconnectors_changed=%d\n", state->connectors_changed);
669 drm_printf(p, "\tcolor_mgmt_changed=%d\n", state->color_mgmt_changed);
670 drm_printf(p, "\tplane_mask=%x\n", state->plane_mask);
671 drm_printf(p, "\tconnector_mask=%x\n", state->connector_mask);
672 drm_printf(p, "\tencoder_mask=%x\n", state->encoder_mask);
673 drm_printf(p, "\tmode: " DRM_MODE_FMT "\n", DRM_MODE_ARG(&state->mode));
675 if (crtc->funcs->atomic_print_state)
676 crtc->funcs->atomic_print_state(p, state);
680 * drm_atomic_get_plane_state - get plane state
681 * @state: global atomic state object
682 * @plane: plane to get state object for
684 * This function returns the plane state for the given plane, allocating it if
685 * needed. It will also grab the relevant plane lock to make sure that the state
690 * Either the allocated state or the error code encoded into the pointer. When
691 * the error is EDEADLK then the w/w mutex code has detected a deadlock and the
692 * entire atomic sequence must be restarted. All other errors are fatal.
694 struct drm_plane_state *
695 drm_atomic_get_plane_state(struct drm_atomic_state *state,
696 struct drm_plane *plane)
698 int ret, index = drm_plane_index(plane);
699 struct drm_plane_state *plane_state;
701 WARN_ON(!state->acquire_ctx);
703 /* the legacy pointers should never be set */
705 WARN_ON(plane->old_fb);
706 WARN_ON(plane->crtc);
708 plane_state = drm_atomic_get_existing_plane_state(state, plane);
712 ret = drm_modeset_lock(&plane->mutex, state->acquire_ctx);
716 plane_state = plane->funcs->atomic_duplicate_state(plane);
718 return ERR_PTR(-ENOMEM);
720 state->planes[index].state = plane_state;
721 state->planes[index].ptr = plane;
722 state->planes[index].old_state = plane->state;
723 state->planes[index].new_state = plane_state;
724 plane_state->state = state;
726 DRM_DEBUG_ATOMIC("Added [PLANE:%d:%s] %p state to %p\n",
727 plane->base.id, plane->name, plane_state, state);
729 if (plane_state->crtc) {
730 struct drm_crtc_state *crtc_state;
732 crtc_state = drm_atomic_get_crtc_state(state,
734 if (IS_ERR(crtc_state))
735 return ERR_CAST(crtc_state);
740 EXPORT_SYMBOL(drm_atomic_get_plane_state);
743 * drm_atomic_plane_set_property - set property on plane
744 * @plane: the drm plane to set a property on
745 * @state: the state object to update with the new property value
746 * @property: the property to set
747 * @val: the new property value
749 * This function handles generic/core properties and calls out to driver's
750 * &drm_plane_funcs.atomic_set_property for driver properties. To ensure
751 * consistent behavior you must call this function rather than the driver hook
755 * Zero on success, error code on failure
757 static int drm_atomic_plane_set_property(struct drm_plane *plane,
758 struct drm_plane_state *state, struct drm_property *property,
761 struct drm_device *dev = plane->dev;
762 struct drm_mode_config *config = &dev->mode_config;
764 if (property == config->prop_fb_id) {
765 struct drm_framebuffer *fb = drm_framebuffer_lookup(dev, NULL, val);
766 drm_atomic_set_fb_for_plane(state, fb);
768 drm_framebuffer_put(fb);
769 } else if (property == config->prop_in_fence_fd) {
773 if (U642I64(val) == -1)
776 state->fence = sync_file_get_fence(val);
780 } else if (property == config->prop_crtc_id) {
781 struct drm_crtc *crtc = drm_crtc_find(dev, NULL, val);
782 return drm_atomic_set_crtc_for_plane(state, crtc);
783 } else if (property == config->prop_crtc_x) {
784 state->crtc_x = U642I64(val);
785 } else if (property == config->prop_crtc_y) {
786 state->crtc_y = U642I64(val);
787 } else if (property == config->prop_crtc_w) {
789 } else if (property == config->prop_crtc_h) {
791 } else if (property == config->prop_src_x) {
793 } else if (property == config->prop_src_y) {
795 } else if (property == config->prop_src_w) {
797 } else if (property == config->prop_src_h) {
799 } else if (property == plane->alpha_property) {
801 } else if (property == plane->rotation_property) {
802 if (!is_power_of_2(val & DRM_MODE_ROTATE_MASK)) {
803 DRM_DEBUG_ATOMIC("[PLANE:%d:%s] bad rotation bitmask: 0x%llx\n",
804 plane->base.id, plane->name, val);
807 state->rotation = val;
808 } else if (property == plane->zpos_property) {
810 } else if (property == plane->color_encoding_property) {
811 state->color_encoding = val;
812 } else if (property == plane->color_range_property) {
813 state->color_range = val;
814 } else if (plane->funcs->atomic_set_property) {
815 return plane->funcs->atomic_set_property(plane, state,
818 DRM_DEBUG_ATOMIC("[PLANE:%d:%s] unknown property [PROP:%d:%s]]\n",
819 plane->base.id, plane->name,
820 property->base.id, property->name);
828 * drm_atomic_plane_get_property - get property value from plane state
829 * @plane: the drm plane to set a property on
830 * @state: the state object to get the property value from
831 * @property: the property to set
832 * @val: return location for the property value
834 * This function handles generic/core properties and calls out to driver's
835 * &drm_plane_funcs.atomic_get_property for driver properties. To ensure
836 * consistent behavior you must call this function rather than the driver hook
840 * Zero on success, error code on failure
843 drm_atomic_plane_get_property(struct drm_plane *plane,
844 const struct drm_plane_state *state,
845 struct drm_property *property, uint64_t *val)
847 struct drm_device *dev = plane->dev;
848 struct drm_mode_config *config = &dev->mode_config;
850 if (property == config->prop_fb_id) {
851 *val = (state->fb) ? state->fb->base.id : 0;
852 } else if (property == config->prop_in_fence_fd) {
854 } else if (property == config->prop_crtc_id) {
855 *val = (state->crtc) ? state->crtc->base.id : 0;
856 } else if (property == config->prop_crtc_x) {
857 *val = I642U64(state->crtc_x);
858 } else if (property == config->prop_crtc_y) {
859 *val = I642U64(state->crtc_y);
860 } else if (property == config->prop_crtc_w) {
861 *val = state->crtc_w;
862 } else if (property == config->prop_crtc_h) {
863 *val = state->crtc_h;
864 } else if (property == config->prop_src_x) {
866 } else if (property == config->prop_src_y) {
868 } else if (property == config->prop_src_w) {
870 } else if (property == config->prop_src_h) {
872 } else if (property == plane->alpha_property) {
874 } else if (property == plane->rotation_property) {
875 *val = state->rotation;
876 } else if (property == plane->zpos_property) {
878 } else if (property == plane->color_encoding_property) {
879 *val = state->color_encoding;
880 } else if (property == plane->color_range_property) {
881 *val = state->color_range;
882 } else if (plane->funcs->atomic_get_property) {
883 return plane->funcs->atomic_get_property(plane, state, property, val);
892 plane_switching_crtc(struct drm_atomic_state *state,
893 struct drm_plane *plane,
894 struct drm_plane_state *plane_state)
896 if (!plane->state->crtc || !plane_state->crtc)
899 if (plane->state->crtc == plane_state->crtc)
902 /* This could be refined, but currently there's no helper or driver code
903 * to implement direct switching of active planes nor userspace to take
904 * advantage of more direct plane switching without the intermediate
911 * drm_atomic_plane_check - check plane state
912 * @plane: plane to check
913 * @state: plane state to check
915 * Provides core sanity checks for plane state.
918 * Zero on success, error code on failure
920 static int drm_atomic_plane_check(struct drm_plane *plane,
921 struct drm_plane_state *state)
923 unsigned int fb_width, fb_height;
926 /* either *both* CRTC and FB must be set, or neither */
927 if (state->crtc && !state->fb) {
928 DRM_DEBUG_ATOMIC("[PLANE:%d:%s] CRTC set but no FB\n",
929 plane->base.id, plane->name);
931 } else if (state->fb && !state->crtc) {
932 DRM_DEBUG_ATOMIC("[PLANE:%d:%s] FB set but no CRTC\n",
933 plane->base.id, plane->name);
937 /* if disabled, we don't care about the rest of the state: */
941 /* Check whether this plane is usable on this CRTC */
942 if (!(plane->possible_crtcs & drm_crtc_mask(state->crtc))) {
943 DRM_DEBUG_ATOMIC("Invalid [CRTC:%d:%s] for [PLANE:%d:%s]\n",
944 state->crtc->base.id, state->crtc->name,
945 plane->base.id, plane->name);
949 /* Check whether this plane supports the fb pixel format. */
950 ret = drm_plane_check_pixel_format(plane, state->fb->format->format,
951 state->fb->modifier);
953 struct drm_format_name_buf format_name;
954 DRM_DEBUG_ATOMIC("[PLANE:%d:%s] invalid pixel format %s, modifier 0x%llx\n",
955 plane->base.id, plane->name,
956 drm_get_format_name(state->fb->format->format,
958 state->fb->modifier);
962 /* Give drivers some help against integer overflows */
963 if (state->crtc_w > INT_MAX ||
964 state->crtc_x > INT_MAX - (int32_t) state->crtc_w ||
965 state->crtc_h > INT_MAX ||
966 state->crtc_y > INT_MAX - (int32_t) state->crtc_h) {
967 DRM_DEBUG_ATOMIC("[PLANE:%d:%s] invalid CRTC coordinates %ux%u+%d+%d\n",
968 plane->base.id, plane->name,
969 state->crtc_w, state->crtc_h,
970 state->crtc_x, state->crtc_y);
974 fb_width = state->fb->width << 16;
975 fb_height = state->fb->height << 16;
977 /* Make sure source coordinates are inside the fb. */
978 if (state->src_w > fb_width ||
979 state->src_x > fb_width - state->src_w ||
980 state->src_h > fb_height ||
981 state->src_y > fb_height - state->src_h) {
982 DRM_DEBUG_ATOMIC("[PLANE:%d:%s] invalid source coordinates "
983 "%u.%06ux%u.%06u+%u.%06u+%u.%06u (fb %ux%u)\n",
984 plane->base.id, plane->name,
985 state->src_w >> 16, ((state->src_w & 0xffff) * 15625) >> 10,
986 state->src_h >> 16, ((state->src_h & 0xffff) * 15625) >> 10,
987 state->src_x >> 16, ((state->src_x & 0xffff) * 15625) >> 10,
988 state->src_y >> 16, ((state->src_y & 0xffff) * 15625) >> 10,
989 state->fb->width, state->fb->height);
993 if (plane_switching_crtc(state->state, plane, state)) {
994 DRM_DEBUG_ATOMIC("[PLANE:%d:%s] switching CRTC directly\n",
995 plane->base.id, plane->name);
1002 static void drm_atomic_plane_print_state(struct drm_printer *p,
1003 const struct drm_plane_state *state)
1005 struct drm_plane *plane = state->plane;
1006 struct drm_rect src = drm_plane_state_src(state);
1007 struct drm_rect dest = drm_plane_state_dest(state);
1009 drm_printf(p, "plane[%u]: %s\n", plane->base.id, plane->name);
1010 drm_printf(p, "\tcrtc=%s\n", state->crtc ? state->crtc->name : "(null)");
1011 drm_printf(p, "\tfb=%u\n", state->fb ? state->fb->base.id : 0);
1013 drm_framebuffer_print_info(p, 2, state->fb);
1014 drm_printf(p, "\tcrtc-pos=" DRM_RECT_FMT "\n", DRM_RECT_ARG(&dest));
1015 drm_printf(p, "\tsrc-pos=" DRM_RECT_FP_FMT "\n", DRM_RECT_FP_ARG(&src));
1016 drm_printf(p, "\trotation=%x\n", state->rotation);
1017 drm_printf(p, "\tcolor-encoding=%s\n",
1018 drm_get_color_encoding_name(state->color_encoding));
1019 drm_printf(p, "\tcolor-range=%s\n",
1020 drm_get_color_range_name(state->color_range));
1022 if (plane->funcs->atomic_print_state)
1023 plane->funcs->atomic_print_state(p, state);
1027 * DOC: handling driver private state
1029 * Very often the DRM objects exposed to userspace in the atomic modeset api
1030 * (&drm_connector, &drm_crtc and &drm_plane) do not map neatly to the
1031 * underlying hardware. Especially for any kind of shared resources (e.g. shared
1032 * clocks, scaler units, bandwidth and fifo limits shared among a group of
1033 * planes or CRTCs, and so on) it makes sense to model these as independent
1034 * objects. Drivers then need to do similar state tracking and commit ordering for
1035 * such private (since not exposed to userpace) objects as the atomic core and
1036 * helpers already provide for connectors, planes and CRTCs.
1038 * To make this easier on drivers the atomic core provides some support to track
1039 * driver private state objects using struct &drm_private_obj, with the
1040 * associated state struct &drm_private_state.
1042 * Similar to userspace-exposed objects, private state structures can be
1043 * acquired by calling drm_atomic_get_private_obj_state(). Since this function
1044 * does not take care of locking, drivers should wrap it for each type of
1045 * private state object they have with the required call to drm_modeset_lock()
1046 * for the corresponding &drm_modeset_lock.
1048 * All private state structures contained in a &drm_atomic_state update can be
1049 * iterated using for_each_oldnew_private_obj_in_state(),
1050 * for_each_new_private_obj_in_state() and for_each_old_private_obj_in_state().
1051 * Drivers are recommended to wrap these for each type of driver private state
1052 * object they have, filtering on &drm_private_obj.funcs using for_each_if(), at
1053 * least if they want to iterate over all objects of a given type.
1055 * An earlier way to handle driver private state was by subclassing struct
1056 * &drm_atomic_state. But since that encourages non-standard ways to implement
1057 * the check/commit split atomic requires (by using e.g. "check and rollback or
1058 * commit instead" of "duplicate state, check, then either commit or release
1059 * duplicated state) it is deprecated in favour of using &drm_private_state.
1063 * drm_atomic_private_obj_init - initialize private object
1064 * @obj: private object
1065 * @state: initial private object state
1066 * @funcs: pointer to the struct of function pointers that identify the object
1069 * Initialize the private object, which can be embedded into any
1070 * driver private object that needs its own atomic state.
1073 drm_atomic_private_obj_init(struct drm_private_obj *obj,
1074 struct drm_private_state *state,
1075 const struct drm_private_state_funcs *funcs)
1077 memset(obj, 0, sizeof(*obj));
1082 EXPORT_SYMBOL(drm_atomic_private_obj_init);
1085 * drm_atomic_private_obj_fini - finalize private object
1086 * @obj: private object
1088 * Finalize the private object.
1091 drm_atomic_private_obj_fini(struct drm_private_obj *obj)
1093 obj->funcs->atomic_destroy_state(obj, obj->state);
1095 EXPORT_SYMBOL(drm_atomic_private_obj_fini);
1098 * drm_atomic_get_private_obj_state - get private object state
1099 * @state: global atomic state
1100 * @obj: private object to get the state for
1102 * This function returns the private object state for the given private object,
1103 * allocating the state if needed. It does not grab any locks as the caller is
1104 * expected to care of any required locking.
1108 * Either the allocated state or the error code encoded into a pointer.
1110 struct drm_private_state *
1111 drm_atomic_get_private_obj_state(struct drm_atomic_state *state,
1112 struct drm_private_obj *obj)
1114 int index, num_objs, i;
1116 struct __drm_private_objs_state *arr;
1117 struct drm_private_state *obj_state;
1119 for (i = 0; i < state->num_private_objs; i++)
1120 if (obj == state->private_objs[i].ptr)
1121 return state->private_objs[i].state;
1123 num_objs = state->num_private_objs + 1;
1124 size = sizeof(*state->private_objs) * num_objs;
1125 arr = krealloc(state->private_objs, size, GFP_KERNEL);
1127 return ERR_PTR(-ENOMEM);
1129 state->private_objs = arr;
1130 index = state->num_private_objs;
1131 memset(&state->private_objs[index], 0, sizeof(*state->private_objs));
1133 obj_state = obj->funcs->atomic_duplicate_state(obj);
1135 return ERR_PTR(-ENOMEM);
1137 state->private_objs[index].state = obj_state;
1138 state->private_objs[index].old_state = obj->state;
1139 state->private_objs[index].new_state = obj_state;
1140 state->private_objs[index].ptr = obj;
1142 state->num_private_objs = num_objs;
1144 DRM_DEBUG_ATOMIC("Added new private object %p state %p to %p\n",
1145 obj, obj_state, state);
1149 EXPORT_SYMBOL(drm_atomic_get_private_obj_state);
1152 * drm_atomic_get_connector_state - get connector state
1153 * @state: global atomic state object
1154 * @connector: connector to get state object for
1156 * This function returns the connector state for the given connector,
1157 * allocating it if needed. It will also grab the relevant connector lock to
1158 * make sure that the state is consistent.
1162 * Either the allocated state or the error code encoded into the pointer. When
1163 * the error is EDEADLK then the w/w mutex code has detected a deadlock and the
1164 * entire atomic sequence must be restarted. All other errors are fatal.
1166 struct drm_connector_state *
1167 drm_atomic_get_connector_state(struct drm_atomic_state *state,
1168 struct drm_connector *connector)
1171 struct drm_mode_config *config = &connector->dev->mode_config;
1172 struct drm_connector_state *connector_state;
1174 WARN_ON(!state->acquire_ctx);
1176 ret = drm_modeset_lock(&config->connection_mutex, state->acquire_ctx);
1178 return ERR_PTR(ret);
1180 index = drm_connector_index(connector);
1182 if (index >= state->num_connector) {
1183 struct __drm_connnectors_state *c;
1184 int alloc = max(index + 1, config->num_connector);
1186 c = krealloc(state->connectors, alloc * sizeof(*state->connectors), GFP_KERNEL);
1188 return ERR_PTR(-ENOMEM);
1190 state->connectors = c;
1191 memset(&state->connectors[state->num_connector], 0,
1192 sizeof(*state->connectors) * (alloc - state->num_connector));
1194 state->num_connector = alloc;
1197 if (state->connectors[index].state)
1198 return state->connectors[index].state;
1200 connector_state = connector->funcs->atomic_duplicate_state(connector);
1201 if (!connector_state)
1202 return ERR_PTR(-ENOMEM);
1204 drm_connector_get(connector);
1205 state->connectors[index].state = connector_state;
1206 state->connectors[index].old_state = connector->state;
1207 state->connectors[index].new_state = connector_state;
1208 state->connectors[index].ptr = connector;
1209 connector_state->state = state;
1211 DRM_DEBUG_ATOMIC("Added [CONNECTOR:%d:%s] %p state to %p\n",
1212 connector->base.id, connector->name,
1213 connector_state, state);
1215 if (connector_state->crtc) {
1216 struct drm_crtc_state *crtc_state;
1218 crtc_state = drm_atomic_get_crtc_state(state,
1219 connector_state->crtc);
1220 if (IS_ERR(crtc_state))
1221 return ERR_CAST(crtc_state);
1224 return connector_state;
1226 EXPORT_SYMBOL(drm_atomic_get_connector_state);
1229 * drm_atomic_connector_set_property - set property on connector.
1230 * @connector: the drm connector to set a property on
1231 * @state: the state object to update with the new property value
1232 * @property: the property to set
1233 * @val: the new property value
1235 * This function handles generic/core properties and calls out to driver's
1236 * &drm_connector_funcs.atomic_set_property for driver properties. To ensure
1237 * consistent behavior you must call this function rather than the driver hook
1241 * Zero on success, error code on failure
1243 static int drm_atomic_connector_set_property(struct drm_connector *connector,
1244 struct drm_connector_state *state, struct drm_property *property,
1247 struct drm_device *dev = connector->dev;
1248 struct drm_mode_config *config = &dev->mode_config;
1250 if (property == config->prop_crtc_id) {
1251 struct drm_crtc *crtc = drm_crtc_find(dev, NULL, val);
1252 return drm_atomic_set_crtc_for_connector(state, crtc);
1253 } else if (property == config->dpms_property) {
1254 /* setting DPMS property requires special handling, which
1255 * is done in legacy setprop path for us. Disallow (for
1256 * now?) atomic writes to DPMS property:
1259 } else if (property == config->tv_select_subconnector_property) {
1260 state->tv.subconnector = val;
1261 } else if (property == config->tv_left_margin_property) {
1262 state->tv.margins.left = val;
1263 } else if (property == config->tv_right_margin_property) {
1264 state->tv.margins.right = val;
1265 } else if (property == config->tv_top_margin_property) {
1266 state->tv.margins.top = val;
1267 } else if (property == config->tv_bottom_margin_property) {
1268 state->tv.margins.bottom = val;
1269 } else if (property == config->tv_mode_property) {
1270 state->tv.mode = val;
1271 } else if (property == config->tv_brightness_property) {
1272 state->tv.brightness = val;
1273 } else if (property == config->tv_contrast_property) {
1274 state->tv.contrast = val;
1275 } else if (property == config->tv_flicker_reduction_property) {
1276 state->tv.flicker_reduction = val;
1277 } else if (property == config->tv_overscan_property) {
1278 state->tv.overscan = val;
1279 } else if (property == config->tv_saturation_property) {
1280 state->tv.saturation = val;
1281 } else if (property == config->tv_hue_property) {
1282 state->tv.hue = val;
1283 } else if (property == config->link_status_property) {
1284 /* Never downgrade from GOOD to BAD on userspace's request here,
1285 * only hw issues can do that.
1287 * For an atomic property the userspace doesn't need to be able
1288 * to understand all the properties, but needs to be able to
1289 * restore the state it wants on VT switch. So if the userspace
1290 * tries to change the link_status from GOOD to BAD, driver
1291 * silently rejects it and returns a 0. This prevents userspace
1292 * from accidently breaking the display when it restores the
1295 if (state->link_status != DRM_LINK_STATUS_GOOD)
1296 state->link_status = val;
1297 } else if (property == config->aspect_ratio_property) {
1298 state->picture_aspect_ratio = val;
1299 } else if (property == config->content_type_property) {
1300 state->content_type = val;
1301 } else if (property == connector->scaling_mode_property) {
1302 state->scaling_mode = val;
1303 } else if (property == connector->content_protection_property) {
1304 if (val == DRM_MODE_CONTENT_PROTECTION_ENABLED) {
1305 DRM_DEBUG_KMS("only drivers can set CP Enabled\n");
1308 state->content_protection = val;
1309 } else if (connector->funcs->atomic_set_property) {
1310 return connector->funcs->atomic_set_property(connector,
1311 state, property, val);
1313 DRM_DEBUG_ATOMIC("[CONNECTOR:%d:%s] unknown property [PROP:%d:%s]]\n",
1314 connector->base.id, connector->name,
1315 property->base.id, property->name);
1322 static void drm_atomic_connector_print_state(struct drm_printer *p,
1323 const struct drm_connector_state *state)
1325 struct drm_connector *connector = state->connector;
1327 drm_printf(p, "connector[%u]: %s\n", connector->base.id, connector->name);
1328 drm_printf(p, "\tcrtc=%s\n", state->crtc ? state->crtc->name : "(null)");
1330 if (connector->funcs->atomic_print_state)
1331 connector->funcs->atomic_print_state(p, state);
1335 * drm_atomic_connector_get_property - get property value from connector state
1336 * @connector: the drm connector to set a property on
1337 * @state: the state object to get the property value from
1338 * @property: the property to set
1339 * @val: return location for the property value
1341 * This function handles generic/core properties and calls out to driver's
1342 * &drm_connector_funcs.atomic_get_property for driver properties. To ensure
1343 * consistent behavior you must call this function rather than the driver hook
1347 * Zero on success, error code on failure
1350 drm_atomic_connector_get_property(struct drm_connector *connector,
1351 const struct drm_connector_state *state,
1352 struct drm_property *property, uint64_t *val)
1354 struct drm_device *dev = connector->dev;
1355 struct drm_mode_config *config = &dev->mode_config;
1357 if (property == config->prop_crtc_id) {
1358 *val = (state->crtc) ? state->crtc->base.id : 0;
1359 } else if (property == config->dpms_property) {
1360 *val = connector->dpms;
1361 } else if (property == config->tv_select_subconnector_property) {
1362 *val = state->tv.subconnector;
1363 } else if (property == config->tv_left_margin_property) {
1364 *val = state->tv.margins.left;
1365 } else if (property == config->tv_right_margin_property) {
1366 *val = state->tv.margins.right;
1367 } else if (property == config->tv_top_margin_property) {
1368 *val = state->tv.margins.top;
1369 } else if (property == config->tv_bottom_margin_property) {
1370 *val = state->tv.margins.bottom;
1371 } else if (property == config->tv_mode_property) {
1372 *val = state->tv.mode;
1373 } else if (property == config->tv_brightness_property) {
1374 *val = state->tv.brightness;
1375 } else if (property == config->tv_contrast_property) {
1376 *val = state->tv.contrast;
1377 } else if (property == config->tv_flicker_reduction_property) {
1378 *val = state->tv.flicker_reduction;
1379 } else if (property == config->tv_overscan_property) {
1380 *val = state->tv.overscan;
1381 } else if (property == config->tv_saturation_property) {
1382 *val = state->tv.saturation;
1383 } else if (property == config->tv_hue_property) {
1384 *val = state->tv.hue;
1385 } else if (property == config->link_status_property) {
1386 *val = state->link_status;
1387 } else if (property == config->aspect_ratio_property) {
1388 *val = state->picture_aspect_ratio;
1389 } else if (property == config->content_type_property) {
1390 *val = state->content_type;
1391 } else if (property == connector->scaling_mode_property) {
1392 *val = state->scaling_mode;
1393 } else if (property == connector->content_protection_property) {
1394 *val = state->content_protection;
1395 } else if (connector->funcs->atomic_get_property) {
1396 return connector->funcs->atomic_get_property(connector,
1397 state, property, val);
1405 int drm_atomic_get_property(struct drm_mode_object *obj,
1406 struct drm_property *property, uint64_t *val)
1408 struct drm_device *dev = property->dev;
1411 switch (obj->type) {
1412 case DRM_MODE_OBJECT_CONNECTOR: {
1413 struct drm_connector *connector = obj_to_connector(obj);
1414 WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex));
1415 ret = drm_atomic_connector_get_property(connector,
1416 connector->state, property, val);
1419 case DRM_MODE_OBJECT_CRTC: {
1420 struct drm_crtc *crtc = obj_to_crtc(obj);
1421 WARN_ON(!drm_modeset_is_locked(&crtc->mutex));
1422 ret = drm_atomic_crtc_get_property(crtc,
1423 crtc->state, property, val);
1426 case DRM_MODE_OBJECT_PLANE: {
1427 struct drm_plane *plane = obj_to_plane(obj);
1428 WARN_ON(!drm_modeset_is_locked(&plane->mutex));
1429 ret = drm_atomic_plane_get_property(plane,
1430 plane->state, property, val);
1442 * drm_atomic_set_crtc_for_plane - set crtc for plane
1443 * @plane_state: the plane whose incoming state to update
1444 * @crtc: crtc to use for the plane
1446 * Changing the assigned crtc for a plane requires us to grab the lock and state
1447 * for the new crtc, as needed. This function takes care of all these details
1448 * besides updating the pointer in the state object itself.
1451 * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK
1452 * then the w/w mutex code has detected a deadlock and the entire atomic
1453 * sequence must be restarted. All other errors are fatal.
1456 drm_atomic_set_crtc_for_plane(struct drm_plane_state *plane_state,
1457 struct drm_crtc *crtc)
1459 struct drm_plane *plane = plane_state->plane;
1460 struct drm_crtc_state *crtc_state;
1461 /* Nothing to do for same crtc*/
1462 if (plane_state->crtc == crtc)
1464 if (plane_state->crtc) {
1465 crtc_state = drm_atomic_get_crtc_state(plane_state->state,
1467 if (WARN_ON(IS_ERR(crtc_state)))
1468 return PTR_ERR(crtc_state);
1470 crtc_state->plane_mask &= ~(1 << drm_plane_index(plane));
1473 plane_state->crtc = crtc;
1476 crtc_state = drm_atomic_get_crtc_state(plane_state->state,
1478 if (IS_ERR(crtc_state))
1479 return PTR_ERR(crtc_state);
1480 crtc_state->plane_mask |= (1 << drm_plane_index(plane));
1484 DRM_DEBUG_ATOMIC("Link [PLANE:%d:%s] state %p to [CRTC:%d:%s]\n",
1485 plane->base.id, plane->name, plane_state,
1486 crtc->base.id, crtc->name);
1488 DRM_DEBUG_ATOMIC("Link [PLANE:%d:%s] state %p to [NOCRTC]\n",
1489 plane->base.id, plane->name, plane_state);
1493 EXPORT_SYMBOL(drm_atomic_set_crtc_for_plane);
1496 * drm_atomic_set_fb_for_plane - set framebuffer for plane
1497 * @plane_state: atomic state object for the plane
1498 * @fb: fb to use for the plane
1500 * Changing the assigned framebuffer for a plane requires us to grab a reference
1501 * to the new fb and drop the reference to the old fb, if there is one. This
1502 * function takes care of all these details besides updating the pointer in the
1503 * state object itself.
1506 drm_atomic_set_fb_for_plane(struct drm_plane_state *plane_state,
1507 struct drm_framebuffer *fb)
1509 struct drm_plane *plane = plane_state->plane;
1512 DRM_DEBUG_ATOMIC("Set [FB:%d] for [PLANE:%d:%s] state %p\n",
1513 fb->base.id, plane->base.id, plane->name,
1516 DRM_DEBUG_ATOMIC("Set [NOFB] for [PLANE:%d:%s] state %p\n",
1517 plane->base.id, plane->name, plane_state);
1519 drm_framebuffer_assign(&plane_state->fb, fb);
1521 EXPORT_SYMBOL(drm_atomic_set_fb_for_plane);
1524 * drm_atomic_set_fence_for_plane - set fence for plane
1525 * @plane_state: atomic state object for the plane
1526 * @fence: dma_fence to use for the plane
1528 * Helper to setup the plane_state fence in case it is not set yet.
1529 * By using this drivers doesn't need to worry if the user choose
1530 * implicit or explicit fencing.
1532 * This function will not set the fence to the state if it was set
1533 * via explicit fencing interfaces on the atomic ioctl. In that case it will
1534 * drop the reference to the fence as we are not storing it anywhere.
1535 * Otherwise, if &drm_plane_state.fence is not set this function we just set it
1536 * with the received implicit fence. In both cases this function consumes a
1537 * reference for @fence.
1539 * This way explicit fencing can be used to overrule implicit fencing, which is
1540 * important to make explicit fencing use-cases work: One example is using one
1541 * buffer for 2 screens with different refresh rates. Implicit fencing will
1542 * clamp rendering to the refresh rate of the slower screen, whereas explicit
1543 * fence allows 2 independent render and display loops on a single buffer. If a
1544 * driver allows obeys both implicit and explicit fences for plane updates, then
1545 * it will break all the benefits of explicit fencing.
1548 drm_atomic_set_fence_for_plane(struct drm_plane_state *plane_state,
1549 struct dma_fence *fence)
1551 if (plane_state->fence) {
1552 dma_fence_put(fence);
1556 plane_state->fence = fence;
1558 EXPORT_SYMBOL(drm_atomic_set_fence_for_plane);
1561 * drm_atomic_set_crtc_for_connector - set crtc for connector
1562 * @conn_state: atomic state object for the connector
1563 * @crtc: crtc to use for the connector
1565 * Changing the assigned crtc for a connector requires us to grab the lock and
1566 * state for the new crtc, as needed. This function takes care of all these
1567 * details besides updating the pointer in the state object itself.
1570 * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK
1571 * then the w/w mutex code has detected a deadlock and the entire atomic
1572 * sequence must be restarted. All other errors are fatal.
1575 drm_atomic_set_crtc_for_connector(struct drm_connector_state *conn_state,
1576 struct drm_crtc *crtc)
1578 struct drm_connector *connector = conn_state->connector;
1579 struct drm_crtc_state *crtc_state;
1581 if (conn_state->crtc == crtc)
1584 if (conn_state->crtc) {
1585 crtc_state = drm_atomic_get_new_crtc_state(conn_state->state,
1588 crtc_state->connector_mask &=
1589 ~(1 << drm_connector_index(conn_state->connector));
1591 drm_connector_put(conn_state->connector);
1592 conn_state->crtc = NULL;
1596 crtc_state = drm_atomic_get_crtc_state(conn_state->state, crtc);
1597 if (IS_ERR(crtc_state))
1598 return PTR_ERR(crtc_state);
1600 crtc_state->connector_mask |=
1601 1 << drm_connector_index(conn_state->connector);
1603 drm_connector_get(conn_state->connector);
1604 conn_state->crtc = crtc;
1606 DRM_DEBUG_ATOMIC("Link [CONNECTOR:%d:%s] state %p to [CRTC:%d:%s]\n",
1607 connector->base.id, connector->name,
1608 conn_state, crtc->base.id, crtc->name);
1610 DRM_DEBUG_ATOMIC("Link [CONNECTOR:%d:%s] state %p to [NOCRTC]\n",
1611 connector->base.id, connector->name,
1617 EXPORT_SYMBOL(drm_atomic_set_crtc_for_connector);
1620 * drm_atomic_add_affected_connectors - add connectors for crtc
1621 * @state: atomic state
1624 * This function walks the current configuration and adds all connectors
1625 * currently using @crtc to the atomic configuration @state. Note that this
1626 * function must acquire the connection mutex. This can potentially cause
1627 * unneeded seralization if the update is just for the planes on one crtc. Hence
1628 * drivers and helpers should only call this when really needed (e.g. when a
1629 * full modeset needs to happen due to some change).
1632 * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK
1633 * then the w/w mutex code has detected a deadlock and the entire atomic
1634 * sequence must be restarted. All other errors are fatal.
1637 drm_atomic_add_affected_connectors(struct drm_atomic_state *state,
1638 struct drm_crtc *crtc)
1640 struct drm_mode_config *config = &state->dev->mode_config;
1641 struct drm_connector *connector;
1642 struct drm_connector_state *conn_state;
1643 struct drm_connector_list_iter conn_iter;
1644 struct drm_crtc_state *crtc_state;
1647 crtc_state = drm_atomic_get_crtc_state(state, crtc);
1648 if (IS_ERR(crtc_state))
1649 return PTR_ERR(crtc_state);
1651 ret = drm_modeset_lock(&config->connection_mutex, state->acquire_ctx);
1655 DRM_DEBUG_ATOMIC("Adding all current connectors for [CRTC:%d:%s] to %p\n",
1656 crtc->base.id, crtc->name, state);
1659 * Changed connectors are already in @state, so only need to look
1660 * at the connector_mask in crtc_state.
1662 drm_connector_list_iter_begin(state->dev, &conn_iter);
1663 drm_for_each_connector_iter(connector, &conn_iter) {
1664 if (!(crtc_state->connector_mask & (1 << drm_connector_index(connector))))
1667 conn_state = drm_atomic_get_connector_state(state, connector);
1668 if (IS_ERR(conn_state)) {
1669 drm_connector_list_iter_end(&conn_iter);
1670 return PTR_ERR(conn_state);
1673 drm_connector_list_iter_end(&conn_iter);
1677 EXPORT_SYMBOL(drm_atomic_add_affected_connectors);
1680 * drm_atomic_add_affected_planes - add planes for crtc
1681 * @state: atomic state
1684 * This function walks the current configuration and adds all planes
1685 * currently used by @crtc to the atomic configuration @state. This is useful
1686 * when an atomic commit also needs to check all currently enabled plane on
1687 * @crtc, e.g. when changing the mode. It's also useful when re-enabling a CRTC
1688 * to avoid special code to force-enable all planes.
1690 * Since acquiring a plane state will always also acquire the w/w mutex of the
1691 * current CRTC for that plane (if there is any) adding all the plane states for
1692 * a CRTC will not reduce parallism of atomic updates.
1695 * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK
1696 * then the w/w mutex code has detected a deadlock and the entire atomic
1697 * sequence must be restarted. All other errors are fatal.
1700 drm_atomic_add_affected_planes(struct drm_atomic_state *state,
1701 struct drm_crtc *crtc)
1703 struct drm_plane *plane;
1705 WARN_ON(!drm_atomic_get_new_crtc_state(state, crtc));
1707 DRM_DEBUG_ATOMIC("Adding all current planes for [CRTC:%d:%s] to %p\n",
1708 crtc->base.id, crtc->name, state);
1710 drm_for_each_plane_mask(plane, state->dev, crtc->state->plane_mask) {
1711 struct drm_plane_state *plane_state =
1712 drm_atomic_get_plane_state(state, plane);
1714 if (IS_ERR(plane_state))
1715 return PTR_ERR(plane_state);
1719 EXPORT_SYMBOL(drm_atomic_add_affected_planes);
1722 * drm_atomic_check_only - check whether a given config would work
1723 * @state: atomic configuration to check
1725 * Note that this function can return -EDEADLK if the driver needed to acquire
1726 * more locks but encountered a deadlock. The caller must then do the usual w/w
1727 * backoff dance and restart. All other errors are fatal.
1730 * 0 on success, negative error code on failure.
1732 int drm_atomic_check_only(struct drm_atomic_state *state)
1734 struct drm_device *dev = state->dev;
1735 struct drm_mode_config *config = &dev->mode_config;
1736 struct drm_plane *plane;
1737 struct drm_plane_state *plane_state;
1738 struct drm_crtc *crtc;
1739 struct drm_crtc_state *crtc_state;
1742 DRM_DEBUG_ATOMIC("checking %p\n", state);
1744 for_each_new_plane_in_state(state, plane, plane_state, i) {
1745 ret = drm_atomic_plane_check(plane, plane_state);
1747 DRM_DEBUG_ATOMIC("[PLANE:%d:%s] atomic core check failed\n",
1748 plane->base.id, plane->name);
1753 for_each_new_crtc_in_state(state, crtc, crtc_state, i) {
1754 ret = drm_atomic_crtc_check(crtc, crtc_state);
1756 DRM_DEBUG_ATOMIC("[CRTC:%d:%s] atomic core check failed\n",
1757 crtc->base.id, crtc->name);
1762 if (config->funcs->atomic_check)
1763 ret = config->funcs->atomic_check(state->dev, state);
1768 if (!state->allow_modeset) {
1769 for_each_new_crtc_in_state(state, crtc, crtc_state, i) {
1770 if (drm_atomic_crtc_needs_modeset(crtc_state)) {
1771 DRM_DEBUG_ATOMIC("[CRTC:%d:%s] requires full modeset\n",
1772 crtc->base.id, crtc->name);
1780 EXPORT_SYMBOL(drm_atomic_check_only);
1783 * drm_atomic_commit - commit configuration atomically
1784 * @state: atomic configuration to check
1786 * Note that this function can return -EDEADLK if the driver needed to acquire
1787 * more locks but encountered a deadlock. The caller must then do the usual w/w
1788 * backoff dance and restart. All other errors are fatal.
1790 * This function will take its own reference on @state.
1791 * Callers should always release their reference with drm_atomic_state_put().
1794 * 0 on success, negative error code on failure.
1796 int drm_atomic_commit(struct drm_atomic_state *state)
1798 struct drm_mode_config *config = &state->dev->mode_config;
1801 ret = drm_atomic_check_only(state);
1805 DRM_DEBUG_ATOMIC("committing %p\n", state);
1807 return config->funcs->atomic_commit(state->dev, state, false);
1809 EXPORT_SYMBOL(drm_atomic_commit);
1812 * drm_atomic_nonblocking_commit - atomic nonblocking commit
1813 * @state: atomic configuration to check
1815 * Note that this function can return -EDEADLK if the driver needed to acquire
1816 * more locks but encountered a deadlock. The caller must then do the usual w/w
1817 * backoff dance and restart. All other errors are fatal.
1819 * This function will take its own reference on @state.
1820 * Callers should always release their reference with drm_atomic_state_put().
1823 * 0 on success, negative error code on failure.
1825 int drm_atomic_nonblocking_commit(struct drm_atomic_state *state)
1827 struct drm_mode_config *config = &state->dev->mode_config;
1830 ret = drm_atomic_check_only(state);
1834 DRM_DEBUG_ATOMIC("committing %p nonblocking\n", state);
1836 return config->funcs->atomic_commit(state->dev, state, true);
1838 EXPORT_SYMBOL(drm_atomic_nonblocking_commit);
1840 static void drm_atomic_print_state(const struct drm_atomic_state *state)
1842 struct drm_printer p = drm_info_printer(state->dev->dev);
1843 struct drm_plane *plane;
1844 struct drm_plane_state *plane_state;
1845 struct drm_crtc *crtc;
1846 struct drm_crtc_state *crtc_state;
1847 struct drm_connector *connector;
1848 struct drm_connector_state *connector_state;
1851 DRM_DEBUG_ATOMIC("checking %p\n", state);
1853 for_each_new_plane_in_state(state, plane, plane_state, i)
1854 drm_atomic_plane_print_state(&p, plane_state);
1856 for_each_new_crtc_in_state(state, crtc, crtc_state, i)
1857 drm_atomic_crtc_print_state(&p, crtc_state);
1859 for_each_new_connector_in_state(state, connector, connector_state, i)
1860 drm_atomic_connector_print_state(&p, connector_state);
1863 static void __drm_state_dump(struct drm_device *dev, struct drm_printer *p,
1866 struct drm_mode_config *config = &dev->mode_config;
1867 struct drm_plane *plane;
1868 struct drm_crtc *crtc;
1869 struct drm_connector *connector;
1870 struct drm_connector_list_iter conn_iter;
1872 if (!drm_core_check_feature(dev, DRIVER_ATOMIC))
1875 list_for_each_entry(plane, &config->plane_list, head) {
1877 drm_modeset_lock(&plane->mutex, NULL);
1878 drm_atomic_plane_print_state(p, plane->state);
1880 drm_modeset_unlock(&plane->mutex);
1883 list_for_each_entry(crtc, &config->crtc_list, head) {
1885 drm_modeset_lock(&crtc->mutex, NULL);
1886 drm_atomic_crtc_print_state(p, crtc->state);
1888 drm_modeset_unlock(&crtc->mutex);
1891 drm_connector_list_iter_begin(dev, &conn_iter);
1893 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
1894 drm_for_each_connector_iter(connector, &conn_iter)
1895 drm_atomic_connector_print_state(p, connector->state);
1897 drm_modeset_unlock(&dev->mode_config.connection_mutex);
1898 drm_connector_list_iter_end(&conn_iter);
1902 * drm_state_dump - dump entire device atomic state
1903 * @dev: the drm device
1904 * @p: where to print the state to
1906 * Just for debugging. Drivers might want an option to dump state
1907 * to dmesg in case of error irq's. (Hint, you probably want to
1910 * The caller must drm_modeset_lock_all(), or if this is called
1911 * from error irq handler, it should not be enabled by default.
1912 * (Ie. if you are debugging errors you might not care that this
1913 * is racey. But calling this without all modeset locks held is
1914 * not inherently safe.)
1916 void drm_state_dump(struct drm_device *dev, struct drm_printer *p)
1918 __drm_state_dump(dev, p, false);
1920 EXPORT_SYMBOL(drm_state_dump);
1922 #ifdef CONFIG_DEBUG_FS
1923 static int drm_state_info(struct seq_file *m, void *data)
1925 struct drm_info_node *node = (struct drm_info_node *) m->private;
1926 struct drm_device *dev = node->minor->dev;
1927 struct drm_printer p = drm_seq_file_printer(m);
1929 __drm_state_dump(dev, &p, true);
1934 /* any use in debugfs files to dump individual planes/crtc/etc? */
1935 static const struct drm_info_list drm_atomic_debugfs_list[] = {
1936 {"state", drm_state_info, 0},
1939 int drm_atomic_debugfs_init(struct drm_minor *minor)
1941 return drm_debugfs_create_files(drm_atomic_debugfs_list,
1942 ARRAY_SIZE(drm_atomic_debugfs_list),
1943 minor->debugfs_root, minor);
1948 * The big monster ioctl
1951 static struct drm_pending_vblank_event *create_vblank_event(
1952 struct drm_crtc *crtc, uint64_t user_data)
1954 struct drm_pending_vblank_event *e = NULL;
1956 e = kzalloc(sizeof *e, GFP_KERNEL);
1960 e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
1961 e->event.base.length = sizeof(e->event);
1962 e->event.vbl.crtc_id = crtc->base.id;
1963 e->event.vbl.user_data = user_data;
1968 int drm_atomic_connector_commit_dpms(struct drm_atomic_state *state,
1969 struct drm_connector *connector,
1972 struct drm_connector *tmp_connector;
1973 struct drm_connector_state *new_conn_state;
1974 struct drm_crtc *crtc;
1975 struct drm_crtc_state *crtc_state;
1976 int i, ret, old_mode = connector->dpms;
1977 bool active = false;
1979 ret = drm_modeset_lock(&state->dev->mode_config.connection_mutex,
1980 state->acquire_ctx);
1984 if (mode != DRM_MODE_DPMS_ON)
1985 mode = DRM_MODE_DPMS_OFF;
1986 connector->dpms = mode;
1988 crtc = connector->state->crtc;
1991 ret = drm_atomic_add_affected_connectors(state, crtc);
1995 crtc_state = drm_atomic_get_crtc_state(state, crtc);
1996 if (IS_ERR(crtc_state)) {
1997 ret = PTR_ERR(crtc_state);
2001 for_each_new_connector_in_state(state, tmp_connector, new_conn_state, i) {
2002 if (new_conn_state->crtc != crtc)
2004 if (tmp_connector->dpms == DRM_MODE_DPMS_ON) {
2010 crtc_state->active = active;
2011 ret = drm_atomic_commit(state);
2014 connector->dpms = old_mode;
2018 int drm_atomic_set_property(struct drm_atomic_state *state,
2019 struct drm_mode_object *obj,
2020 struct drm_property *prop,
2021 uint64_t prop_value)
2023 struct drm_mode_object *ref;
2026 if (!drm_property_change_valid_get(prop, prop_value, &ref))
2029 switch (obj->type) {
2030 case DRM_MODE_OBJECT_CONNECTOR: {
2031 struct drm_connector *connector = obj_to_connector(obj);
2032 struct drm_connector_state *connector_state;
2034 connector_state = drm_atomic_get_connector_state(state, connector);
2035 if (IS_ERR(connector_state)) {
2036 ret = PTR_ERR(connector_state);
2040 ret = drm_atomic_connector_set_property(connector,
2041 connector_state, prop, prop_value);
2044 case DRM_MODE_OBJECT_CRTC: {
2045 struct drm_crtc *crtc = obj_to_crtc(obj);
2046 struct drm_crtc_state *crtc_state;
2048 crtc_state = drm_atomic_get_crtc_state(state, crtc);
2049 if (IS_ERR(crtc_state)) {
2050 ret = PTR_ERR(crtc_state);
2054 ret = drm_atomic_crtc_set_property(crtc,
2055 crtc_state, prop, prop_value);
2058 case DRM_MODE_OBJECT_PLANE: {
2059 struct drm_plane *plane = obj_to_plane(obj);
2060 struct drm_plane_state *plane_state;
2062 plane_state = drm_atomic_get_plane_state(state, plane);
2063 if (IS_ERR(plane_state)) {
2064 ret = PTR_ERR(plane_state);
2068 ret = drm_atomic_plane_set_property(plane,
2069 plane_state, prop, prop_value);
2077 drm_property_change_valid_put(prop, ref);
2082 * DOC: explicit fencing properties
2084 * Explicit fencing allows userspace to control the buffer synchronization
2085 * between devices. A Fence or a group of fences are transfered to/from
2086 * userspace using Sync File fds and there are two DRM properties for that.
2087 * IN_FENCE_FD on each DRM Plane to send fences to the kernel and
2088 * OUT_FENCE_PTR on each DRM CRTC to receive fences from the kernel.
2090 * As a contrast, with implicit fencing the kernel keeps track of any
2091 * ongoing rendering, and automatically ensures that the atomic update waits
2092 * for any pending rendering to complete. For shared buffers represented with
2093 * a &struct dma_buf this is tracked in &struct reservation_object.
2094 * Implicit syncing is how Linux traditionally worked (e.g. DRI2/3 on X.org),
2095 * whereas explicit fencing is what Android wants.
2098 * Use this property to pass a fence that DRM should wait on before
2099 * proceeding with the Atomic Commit request and show the framebuffer for
2100 * the plane on the screen. The fence can be either a normal fence or a
2101 * merged one, the sync_file framework will handle both cases and use a
2102 * fence_array if a merged fence is received. Passing -1 here means no
2103 * fences to wait on.
2105 * If the Atomic Commit request has the DRM_MODE_ATOMIC_TEST_ONLY flag
2106 * it will only check if the Sync File is a valid one.
2108 * On the driver side the fence is stored on the @fence parameter of
2109 * &struct drm_plane_state. Drivers which also support implicit fencing
2110 * should set the implicit fence using drm_atomic_set_fence_for_plane(),
2111 * to make sure there's consistent behaviour between drivers in precedence
2112 * of implicit vs. explicit fencing.
2115 * Use this property to pass a file descriptor pointer to DRM. Once the
2116 * Atomic Commit request call returns OUT_FENCE_PTR will be filled with
2117 * the file descriptor number of a Sync File. This Sync File contains the
2118 * CRTC fence that will be signaled when all framebuffers present on the
2119 * Atomic Commit * request for that given CRTC are scanned out on the
2122 * The Atomic Commit request fails if a invalid pointer is passed. If the
2123 * Atomic Commit request fails for any other reason the out fence fd
2124 * returned will be -1. On a Atomic Commit with the
2125 * DRM_MODE_ATOMIC_TEST_ONLY flag the out fence will also be set to -1.
2127 * Note that out-fences don't have a special interface to drivers and are
2128 * internally represented by a &struct drm_pending_vblank_event in struct
2129 * &drm_crtc_state, which is also used by the nonblocking atomic commit
2130 * helpers and for the DRM event handling for existing userspace.
2133 struct drm_out_fence_state {
2134 s32 __user *out_fence_ptr;
2135 struct sync_file *sync_file;
2139 static int setup_out_fence(struct drm_out_fence_state *fence_state,
2140 struct dma_fence *fence)
2142 fence_state->fd = get_unused_fd_flags(O_CLOEXEC);
2143 if (fence_state->fd < 0)
2144 return fence_state->fd;
2146 if (put_user(fence_state->fd, fence_state->out_fence_ptr))
2149 fence_state->sync_file = sync_file_create(fence);
2150 if (!fence_state->sync_file)
2156 static int prepare_crtc_signaling(struct drm_device *dev,
2157 struct drm_atomic_state *state,
2158 struct drm_mode_atomic *arg,
2159 struct drm_file *file_priv,
2160 struct drm_out_fence_state **fence_state,
2161 unsigned int *num_fences)
2163 struct drm_crtc *crtc;
2164 struct drm_crtc_state *crtc_state;
2167 if (arg->flags & DRM_MODE_ATOMIC_TEST_ONLY)
2170 for_each_new_crtc_in_state(state, crtc, crtc_state, i) {
2171 s32 __user *fence_ptr;
2173 fence_ptr = get_out_fence_for_crtc(crtc_state->state, crtc);
2175 if (arg->flags & DRM_MODE_PAGE_FLIP_EVENT || fence_ptr) {
2176 struct drm_pending_vblank_event *e;
2178 e = create_vblank_event(crtc, arg->user_data);
2182 crtc_state->event = e;
2185 if (arg->flags & DRM_MODE_PAGE_FLIP_EVENT) {
2186 struct drm_pending_vblank_event *e = crtc_state->event;
2191 ret = drm_event_reserve_init(dev, file_priv, &e->base,
2195 crtc_state->event = NULL;
2201 struct dma_fence *fence;
2202 struct drm_out_fence_state *f;
2204 f = krealloc(*fence_state, sizeof(**fence_state) *
2205 (*num_fences + 1), GFP_KERNEL);
2209 memset(&f[*num_fences], 0, sizeof(*f));
2211 f[*num_fences].out_fence_ptr = fence_ptr;
2214 fence = drm_crtc_create_fence(crtc);
2218 ret = setup_out_fence(&f[(*num_fences)++], fence);
2220 dma_fence_put(fence);
2224 crtc_state->event->base.fence = fence;
2231 * Having this flag means user mode pends on event which will never
2232 * reach due to lack of at least one CRTC for signaling
2234 if (c == 0 && (arg->flags & DRM_MODE_PAGE_FLIP_EVENT))
2240 static void complete_crtc_signaling(struct drm_device *dev,
2241 struct drm_atomic_state *state,
2242 struct drm_out_fence_state *fence_state,
2243 unsigned int num_fences,
2246 struct drm_crtc *crtc;
2247 struct drm_crtc_state *crtc_state;
2251 for (i = 0; i < num_fences; i++)
2252 fd_install(fence_state[i].fd,
2253 fence_state[i].sync_file->file);
2259 for_each_new_crtc_in_state(state, crtc, crtc_state, i) {
2260 struct drm_pending_vblank_event *event = crtc_state->event;
2262 * Free the allocated event. drm_atomic_helper_setup_commit
2263 * can allocate an event too, so only free it if it's ours
2264 * to prevent a double free in drm_atomic_state_clear.
2266 if (event && (event->base.fence || event->base.file_priv)) {
2267 drm_event_cancel_free(dev, &event->base);
2268 crtc_state->event = NULL;
2275 for (i = 0; i < num_fences; i++) {
2276 if (fence_state[i].sync_file)
2277 fput(fence_state[i].sync_file->file);
2278 if (fence_state[i].fd >= 0)
2279 put_unused_fd(fence_state[i].fd);
2281 /* If this fails log error to the user */
2282 if (fence_state[i].out_fence_ptr &&
2283 put_user(-1, fence_state[i].out_fence_ptr))
2284 DRM_DEBUG_ATOMIC("Couldn't clear out_fence_ptr\n");
2290 int drm_mode_atomic_ioctl(struct drm_device *dev,
2291 void *data, struct drm_file *file_priv)
2293 struct drm_mode_atomic *arg = data;
2294 uint32_t __user *objs_ptr = (uint32_t __user *)(unsigned long)(arg->objs_ptr);
2295 uint32_t __user *count_props_ptr = (uint32_t __user *)(unsigned long)(arg->count_props_ptr);
2296 uint32_t __user *props_ptr = (uint32_t __user *)(unsigned long)(arg->props_ptr);
2297 uint64_t __user *prop_values_ptr = (uint64_t __user *)(unsigned long)(arg->prop_values_ptr);
2298 unsigned int copied_objs, copied_props;
2299 struct drm_atomic_state *state;
2300 struct drm_modeset_acquire_ctx ctx;
2301 struct drm_out_fence_state *fence_state;
2303 unsigned int i, j, num_fences;
2305 /* disallow for drivers not supporting atomic: */
2306 if (!drm_core_check_feature(dev, DRIVER_ATOMIC))
2309 /* disallow for userspace that has not enabled atomic cap (even
2310 * though this may be a bit overkill, since legacy userspace
2311 * wouldn't know how to call this ioctl)
2313 if (!file_priv->atomic)
2316 if (arg->flags & ~DRM_MODE_ATOMIC_FLAGS)
2322 if ((arg->flags & DRM_MODE_PAGE_FLIP_ASYNC) &&
2323 !dev->mode_config.async_page_flip)
2326 /* can't test and expect an event at the same time. */
2327 if ((arg->flags & DRM_MODE_ATOMIC_TEST_ONLY) &&
2328 (arg->flags & DRM_MODE_PAGE_FLIP_EVENT))
2331 drm_modeset_acquire_init(&ctx, DRM_MODESET_ACQUIRE_INTERRUPTIBLE);
2333 state = drm_atomic_state_alloc(dev);
2337 state->acquire_ctx = &ctx;
2338 state->allow_modeset = !!(arg->flags & DRM_MODE_ATOMIC_ALLOW_MODESET);
2346 for (i = 0; i < arg->count_objs; i++) {
2347 uint32_t obj_id, count_props;
2348 struct drm_mode_object *obj;
2350 if (get_user(obj_id, objs_ptr + copied_objs)) {
2355 obj = drm_mode_object_find(dev, file_priv, obj_id, DRM_MODE_OBJECT_ANY);
2361 if (!obj->properties) {
2362 drm_mode_object_put(obj);
2367 if (get_user(count_props, count_props_ptr + copied_objs)) {
2368 drm_mode_object_put(obj);
2375 for (j = 0; j < count_props; j++) {
2377 uint64_t prop_value;
2378 struct drm_property *prop;
2380 if (get_user(prop_id, props_ptr + copied_props)) {
2381 drm_mode_object_put(obj);
2386 prop = drm_mode_obj_find_prop_id(obj, prop_id);
2388 drm_mode_object_put(obj);
2393 if (copy_from_user(&prop_value,
2394 prop_values_ptr + copied_props,
2395 sizeof(prop_value))) {
2396 drm_mode_object_put(obj);
2401 ret = drm_atomic_set_property(state, obj, prop,
2404 drm_mode_object_put(obj);
2411 drm_mode_object_put(obj);
2414 ret = prepare_crtc_signaling(dev, state, arg, file_priv, &fence_state,
2419 if (arg->flags & DRM_MODE_ATOMIC_TEST_ONLY) {
2420 ret = drm_atomic_check_only(state);
2421 } else if (arg->flags & DRM_MODE_ATOMIC_NONBLOCK) {
2422 ret = drm_atomic_nonblocking_commit(state);
2424 if (unlikely(drm_debug & DRM_UT_STATE))
2425 drm_atomic_print_state(state);
2427 ret = drm_atomic_commit(state);
2431 complete_crtc_signaling(dev, state, fence_state, num_fences, !ret);
2433 if (ret == -EDEADLK) {
2434 drm_atomic_state_clear(state);
2435 ret = drm_modeset_backoff(&ctx);
2440 drm_atomic_state_put(state);
2442 drm_modeset_drop_locks(&ctx);
2443 drm_modeset_acquire_fini(&ctx);