2 * Copyright (c) 2016 Intel Corporation
4 * Permission to use, copy, modify, distribute, and sell this software and its
5 * documentation for any purpose is hereby granted without fee, provided that
6 * the above copyright notice appear in all copies and that both that copyright
7 * notice and this permission notice appear in supporting documentation, and
8 * that the name of the copyright holders not be used in advertising or
9 * publicity pertaining to distribution of the software without specific,
10 * written prior permission. The copyright holders make no representations
11 * about the suitability of this software for any purpose. It is provided "as
12 * is" without express or implied warranty.
14 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
15 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
16 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
17 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
18 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
19 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
24 #include <drm/drm_plane.h>
26 #include "drm_crtc_internal.h"
31 * A plane represents an image source that can be blended with or overlayed on
32 * top of a CRTC during the scanout process. Planes take their input data from a
33 * &drm_framebuffer object. The plane itself specifies the cropping and scaling
34 * of that image, and where it is placed on the visible are of a display
35 * pipeline, represented by &drm_crtc. A plane can also have additional
36 * properties that specify how the pixels are positioned and blended, like
37 * rotation or Z-position. All these properties are stored in &drm_plane_state.
39 * To create a plane, a KMS drivers allocates and zeroes an instances of
40 * &struct drm_plane (possibly as part of a larger structure) and registers it
41 * with a call to drm_universal_plane_init().
43 * Cursor and overlay planes are optional. All drivers should provide one
44 * primary plane per CRTC to avoid surprising userspace too much. See enum
45 * drm_plane_type for a more in-depth discussion of these special uapi-relevant
46 * plane types. Special planes are associated with their CRTC by calling
47 * drm_crtc_init_with_planes().
49 * The type of a plane is exposed in the immutable "type" enumeration property,
50 * which has one of the following values: "Overlay", "Primary", "Cursor".
53 static unsigned int drm_num_planes(struct drm_device
*dev
)
56 struct drm_plane
*tmp
;
58 drm_for_each_plane(tmp
, dev
) {
66 * drm_universal_plane_init - Initialize a new universal plane object
68 * @plane: plane object to init
69 * @possible_crtcs: bitmask of possible CRTCs
70 * @funcs: callbacks for the new plane
71 * @formats: array of supported formats (DRM_FORMAT\_\*)
72 * @format_count: number of elements in @formats
73 * @type: type of plane (overlay, primary, cursor)
74 * @name: printf style format string for the plane name, or NULL for default name
76 * Initializes a plane object of type @type.
79 * Zero on success, error code on failure.
81 int drm_universal_plane_init(struct drm_device
*dev
, struct drm_plane
*plane
,
82 uint32_t possible_crtcs
,
83 const struct drm_plane_funcs
*funcs
,
84 const uint32_t *formats
, unsigned int format_count
,
85 enum drm_plane_type type
,
86 const char *name
, ...)
88 struct drm_mode_config
*config
= &dev
->mode_config
;
91 ret
= drm_mode_object_add(dev
, &plane
->base
, DRM_MODE_OBJECT_PLANE
);
95 drm_modeset_lock_init(&plane
->mutex
);
97 plane
->base
.properties
= &plane
->properties
;
100 plane
->format_types
= kmalloc_array(format_count
, sizeof(uint32_t),
102 if (!plane
->format_types
) {
103 DRM_DEBUG_KMS("out of memory when allocating plane\n");
104 drm_mode_object_unregister(dev
, &plane
->base
);
112 plane
->name
= kvasprintf(GFP_KERNEL
, name
, ap
);
115 plane
->name
= kasprintf(GFP_KERNEL
, "plane-%d",
116 drm_num_planes(dev
));
119 kfree(plane
->format_types
);
120 drm_mode_object_unregister(dev
, &plane
->base
);
124 memcpy(plane
->format_types
, formats
, format_count
* sizeof(uint32_t));
125 plane
->format_count
= format_count
;
126 plane
->possible_crtcs
= possible_crtcs
;
129 list_add_tail(&plane
->head
, &config
->plane_list
);
130 plane
->index
= config
->num_total_plane
++;
131 if (plane
->type
== DRM_PLANE_TYPE_OVERLAY
)
132 config
->num_overlay_plane
++;
134 drm_object_attach_property(&plane
->base
,
135 config
->plane_type_property
,
138 if (drm_core_check_feature(dev
, DRIVER_ATOMIC
)) {
139 drm_object_attach_property(&plane
->base
, config
->prop_fb_id
, 0);
140 drm_object_attach_property(&plane
->base
, config
->prop_in_fence_fd
, -1);
141 drm_object_attach_property(&plane
->base
, config
->prop_crtc_id
, 0);
142 drm_object_attach_property(&plane
->base
, config
->prop_crtc_x
, 0);
143 drm_object_attach_property(&plane
->base
, config
->prop_crtc_y
, 0);
144 drm_object_attach_property(&plane
->base
, config
->prop_crtc_w
, 0);
145 drm_object_attach_property(&plane
->base
, config
->prop_crtc_h
, 0);
146 drm_object_attach_property(&plane
->base
, config
->prop_src_x
, 0);
147 drm_object_attach_property(&plane
->base
, config
->prop_src_y
, 0);
148 drm_object_attach_property(&plane
->base
, config
->prop_src_w
, 0);
149 drm_object_attach_property(&plane
->base
, config
->prop_src_h
, 0);
154 EXPORT_SYMBOL(drm_universal_plane_init
);
156 int drm_plane_register_all(struct drm_device
*dev
)
158 struct drm_plane
*plane
;
161 drm_for_each_plane(plane
, dev
) {
162 if (plane
->funcs
->late_register
)
163 ret
= plane
->funcs
->late_register(plane
);
171 void drm_plane_unregister_all(struct drm_device
*dev
)
173 struct drm_plane
*plane
;
175 drm_for_each_plane(plane
, dev
) {
176 if (plane
->funcs
->early_unregister
)
177 plane
->funcs
->early_unregister(plane
);
182 * drm_plane_init - Initialize a legacy plane
184 * @plane: plane object to init
185 * @possible_crtcs: bitmask of possible CRTCs
186 * @funcs: callbacks for the new plane
187 * @formats: array of supported formats (DRM_FORMAT\_\*)
188 * @format_count: number of elements in @formats
189 * @is_primary: plane type (primary vs overlay)
191 * Legacy API to initialize a DRM plane.
193 * New drivers should call drm_universal_plane_init() instead.
196 * Zero on success, error code on failure.
198 int drm_plane_init(struct drm_device
*dev
, struct drm_plane
*plane
,
199 uint32_t possible_crtcs
,
200 const struct drm_plane_funcs
*funcs
,
201 const uint32_t *formats
, unsigned int format_count
,
204 enum drm_plane_type type
;
206 type
= is_primary
? DRM_PLANE_TYPE_PRIMARY
: DRM_PLANE_TYPE_OVERLAY
;
207 return drm_universal_plane_init(dev
, plane
, possible_crtcs
, funcs
,
208 formats
, format_count
, type
, NULL
);
210 EXPORT_SYMBOL(drm_plane_init
);
213 * drm_plane_cleanup - Clean up the core plane usage
214 * @plane: plane to cleanup
216 * This function cleans up @plane and removes it from the DRM mode setting
217 * core. Note that the function does *not* free the plane structure itself,
218 * this is the responsibility of the caller.
220 void drm_plane_cleanup(struct drm_plane
*plane
)
222 struct drm_device
*dev
= plane
->dev
;
224 drm_modeset_lock_fini(&plane
->mutex
);
226 kfree(plane
->format_types
);
227 drm_mode_object_unregister(dev
, &plane
->base
);
229 BUG_ON(list_empty(&plane
->head
));
231 /* Note that the plane_list is considered to be static; should we
232 * remove the drm_plane at runtime we would have to decrement all
233 * the indices on the drm_plane after us in the plane_list.
236 list_del(&plane
->head
);
237 dev
->mode_config
.num_total_plane
--;
238 if (plane
->type
== DRM_PLANE_TYPE_OVERLAY
)
239 dev
->mode_config
.num_overlay_plane
--;
241 WARN_ON(plane
->state
&& !plane
->funcs
->atomic_destroy_state
);
242 if (plane
->state
&& plane
->funcs
->atomic_destroy_state
)
243 plane
->funcs
->atomic_destroy_state(plane
, plane
->state
);
247 memset(plane
, 0, sizeof(*plane
));
249 EXPORT_SYMBOL(drm_plane_cleanup
);
252 * drm_plane_from_index - find the registered plane at an index
254 * @idx: index of registered plane to find for
256 * Given a plane index, return the registered plane from DRM device's
257 * list of planes with matching index. This is the inverse of drm_plane_index().
260 drm_plane_from_index(struct drm_device
*dev
, int idx
)
262 struct drm_plane
*plane
;
264 drm_for_each_plane(plane
, dev
)
265 if (idx
== plane
->index
)
270 EXPORT_SYMBOL(drm_plane_from_index
);
273 * drm_plane_force_disable - Forcibly disable a plane
274 * @plane: plane to disable
276 * Forces the plane to be disabled.
278 * Used when the plane's current framebuffer is destroyed,
279 * and when restoring fbdev mode.
281 * Note that this function is not suitable for atomic drivers, since it doesn't
282 * wire through the lock acquisition context properly and hence can't handle
283 * retries or driver private locks. You probably want to use
284 * drm_atomic_helper_disable_plane() or
285 * drm_atomic_helper_disable_planes_on_crtc() instead.
287 void drm_plane_force_disable(struct drm_plane
*plane
)
294 WARN_ON(drm_drv_uses_atomic_modeset(plane
->dev
));
296 plane
->old_fb
= plane
->fb
;
297 ret
= plane
->funcs
->disable_plane(plane
, NULL
);
299 DRM_ERROR("failed to disable plane with busy fb\n");
300 plane
->old_fb
= NULL
;
303 /* disconnect the plane from the fb and crtc: */
304 drm_framebuffer_put(plane
->old_fb
);
305 plane
->old_fb
= NULL
;
309 EXPORT_SYMBOL(drm_plane_force_disable
);
312 * drm_mode_plane_set_obj_prop - set the value of a property
313 * @plane: drm plane object to set property value for
314 * @property: property to set
315 * @value: value the property should be set to
317 * This functions sets a given property on a given plane object. This function
318 * calls the driver's ->set_property callback and changes the software state of
319 * the property if the callback succeeds.
322 * Zero on success, error code on failure.
324 int drm_mode_plane_set_obj_prop(struct drm_plane
*plane
,
325 struct drm_property
*property
,
329 struct drm_mode_object
*obj
= &plane
->base
;
331 if (plane
->funcs
->set_property
)
332 ret
= plane
->funcs
->set_property(plane
, property
, value
);
334 drm_object_property_set_value(obj
, property
, value
);
338 EXPORT_SYMBOL(drm_mode_plane_set_obj_prop
);
340 int drm_mode_getplane_res(struct drm_device
*dev
, void *data
,
341 struct drm_file
*file_priv
)
343 struct drm_mode_get_plane_res
*plane_resp
= data
;
344 struct drm_mode_config
*config
;
345 struct drm_plane
*plane
;
346 uint32_t __user
*plane_ptr
;
350 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
353 config
= &dev
->mode_config
;
355 if (file_priv
->universal_planes
)
356 num_planes
= config
->num_total_plane
;
358 num_planes
= config
->num_overlay_plane
;
361 * This ioctl is called twice, once to determine how much space is
362 * needed, and the 2nd time to fill it.
365 (plane_resp
->count_planes
>= num_planes
)) {
366 plane_ptr
= (uint32_t __user
*)(unsigned long)plane_resp
->plane_id_ptr
;
368 /* Plane lists are invariant, no locking needed. */
369 drm_for_each_plane(plane
, dev
) {
371 * Unless userspace set the 'universal planes'
372 * capability bit, only advertise overlays.
374 if (plane
->type
!= DRM_PLANE_TYPE_OVERLAY
&&
375 !file_priv
->universal_planes
)
378 if (put_user(plane
->base
.id
, plane_ptr
+ copied
))
383 plane_resp
->count_planes
= num_planes
;
388 int drm_mode_getplane(struct drm_device
*dev
, void *data
,
389 struct drm_file
*file_priv
)
391 struct drm_mode_get_plane
*plane_resp
= data
;
392 struct drm_plane
*plane
;
393 uint32_t __user
*format_ptr
;
395 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
398 plane
= drm_plane_find(dev
, plane_resp
->plane_id
);
402 drm_modeset_lock(&plane
->mutex
, NULL
);
403 if (plane
->state
&& plane
->state
->crtc
)
404 plane_resp
->crtc_id
= plane
->state
->crtc
->base
.id
;
405 else if (!plane
->state
&& plane
->crtc
)
406 plane_resp
->crtc_id
= plane
->crtc
->base
.id
;
408 plane_resp
->crtc_id
= 0;
410 if (plane
->state
&& plane
->state
->fb
)
411 plane_resp
->fb_id
= plane
->state
->fb
->base
.id
;
412 else if (!plane
->state
&& plane
->fb
)
413 plane_resp
->fb_id
= plane
->fb
->base
.id
;
415 plane_resp
->fb_id
= 0;
416 drm_modeset_unlock(&plane
->mutex
);
418 plane_resp
->plane_id
= plane
->base
.id
;
419 plane_resp
->possible_crtcs
= plane
->possible_crtcs
;
420 plane_resp
->gamma_size
= 0;
423 * This ioctl is called twice, once to determine how much space is
424 * needed, and the 2nd time to fill it.
426 if (plane
->format_count
&&
427 (plane_resp
->count_format_types
>= plane
->format_count
)) {
428 format_ptr
= (uint32_t __user
*)(unsigned long)plane_resp
->format_type_ptr
;
429 if (copy_to_user(format_ptr
,
431 sizeof(uint32_t) * plane
->format_count
)) {
435 plane_resp
->count_format_types
= plane
->format_count
;
440 int drm_plane_check_pixel_format(const struct drm_plane
*plane
, u32 format
)
444 for (i
= 0; i
< plane
->format_count
; i
++) {
445 if (format
== plane
->format_types
[i
])
453 * setplane_internal - setplane handler for internal callers
455 * Note that we assume an extra reference has already been taken on fb. If the
456 * update fails, this reference will be dropped before return; if it succeeds,
457 * the previous framebuffer (if any) will be unreferenced instead.
459 * src_{x,y,w,h} are provided in 16.16 fixed point format
461 static int __setplane_internal(struct drm_plane
*plane
,
462 struct drm_crtc
*crtc
,
463 struct drm_framebuffer
*fb
,
464 int32_t crtc_x
, int32_t crtc_y
,
465 uint32_t crtc_w
, uint32_t crtc_h
,
466 /* src_{x,y,w,h} values are 16.16 fixed point */
467 uint32_t src_x
, uint32_t src_y
,
468 uint32_t src_w
, uint32_t src_h
,
469 struct drm_modeset_acquire_ctx
*ctx
)
473 /* No fb means shut it down */
475 plane
->old_fb
= plane
->fb
;
476 ret
= plane
->funcs
->disable_plane(plane
, ctx
);
481 plane
->old_fb
= NULL
;
486 /* Check whether this plane is usable on this CRTC */
487 if (!(plane
->possible_crtcs
& drm_crtc_mask(crtc
))) {
488 DRM_DEBUG_KMS("Invalid crtc for plane\n");
493 /* Check whether this plane supports the fb pixel format. */
494 ret
= drm_plane_check_pixel_format(plane
, fb
->format
->format
);
496 struct drm_format_name_buf format_name
;
497 DRM_DEBUG_KMS("Invalid pixel format %s\n",
498 drm_get_format_name(fb
->format
->format
,
503 /* Give drivers some help against integer overflows */
504 if (crtc_w
> INT_MAX
||
505 crtc_x
> INT_MAX
- (int32_t) crtc_w
||
507 crtc_y
> INT_MAX
- (int32_t) crtc_h
) {
508 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
509 crtc_w
, crtc_h
, crtc_x
, crtc_y
);
514 ret
= drm_framebuffer_check_src_coords(src_x
, src_y
, src_w
, src_h
, fb
);
518 plane
->old_fb
= plane
->fb
;
519 ret
= plane
->funcs
->update_plane(plane
, crtc
, fb
,
520 crtc_x
, crtc_y
, crtc_w
, crtc_h
,
521 src_x
, src_y
, src_w
, src_h
, ctx
);
527 plane
->old_fb
= NULL
;
532 drm_framebuffer_put(fb
);
534 drm_framebuffer_put(plane
->old_fb
);
535 plane
->old_fb
= NULL
;
540 static int setplane_internal(struct drm_plane
*plane
,
541 struct drm_crtc
*crtc
,
542 struct drm_framebuffer
*fb
,
543 int32_t crtc_x
, int32_t crtc_y
,
544 uint32_t crtc_w
, uint32_t crtc_h
,
545 /* src_{x,y,w,h} values are 16.16 fixed point */
546 uint32_t src_x
, uint32_t src_y
,
547 uint32_t src_w
, uint32_t src_h
)
549 struct drm_modeset_acquire_ctx ctx
;
552 drm_modeset_acquire_init(&ctx
, 0);
554 ret
= drm_modeset_lock_all_ctx(plane
->dev
, &ctx
);
557 ret
= __setplane_internal(plane
, crtc
, fb
,
558 crtc_x
, crtc_y
, crtc_w
, crtc_h
,
559 src_x
, src_y
, src_w
, src_h
, &ctx
);
562 if (ret
== -EDEADLK
) {
563 drm_modeset_backoff(&ctx
);
566 drm_modeset_drop_locks(&ctx
);
567 drm_modeset_acquire_fini(&ctx
);
572 int drm_mode_setplane(struct drm_device
*dev
, void *data
,
573 struct drm_file
*file_priv
)
575 struct drm_mode_set_plane
*plane_req
= data
;
576 struct drm_plane
*plane
;
577 struct drm_crtc
*crtc
= NULL
;
578 struct drm_framebuffer
*fb
= NULL
;
580 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
584 * First, find the plane, crtc, and fb objects. If not available,
585 * we don't bother to call the driver.
587 plane
= drm_plane_find(dev
, plane_req
->plane_id
);
589 DRM_DEBUG_KMS("Unknown plane ID %d\n",
590 plane_req
->plane_id
);
594 if (plane_req
->fb_id
) {
595 fb
= drm_framebuffer_lookup(dev
, plane_req
->fb_id
);
597 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
602 crtc
= drm_crtc_find(dev
, plane_req
->crtc_id
);
604 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
611 * setplane_internal will take care of deref'ing either the old or new
612 * framebuffer depending on success.
614 return setplane_internal(plane
, crtc
, fb
,
615 plane_req
->crtc_x
, plane_req
->crtc_y
,
616 plane_req
->crtc_w
, plane_req
->crtc_h
,
617 plane_req
->src_x
, plane_req
->src_y
,
618 plane_req
->src_w
, plane_req
->src_h
);
621 static int drm_mode_cursor_universal(struct drm_crtc
*crtc
,
622 struct drm_mode_cursor2
*req
,
623 struct drm_file
*file_priv
,
624 struct drm_modeset_acquire_ctx
*ctx
)
626 struct drm_device
*dev
= crtc
->dev
;
627 struct drm_framebuffer
*fb
= NULL
;
628 struct drm_mode_fb_cmd2 fbreq
= {
630 .height
= req
->height
,
631 .pixel_format
= DRM_FORMAT_ARGB8888
,
632 .pitches
= { req
->width
* 4 },
633 .handles
= { req
->handle
},
635 int32_t crtc_x
, crtc_y
;
636 uint32_t crtc_w
= 0, crtc_h
= 0;
637 uint32_t src_w
= 0, src_h
= 0;
640 BUG_ON(!crtc
->cursor
);
641 WARN_ON(crtc
->cursor
->crtc
!= crtc
&& crtc
->cursor
->crtc
!= NULL
);
644 * Obtain fb we'll be using (either new or existing) and take an extra
645 * reference to it if fb != null. setplane will take care of dropping
646 * the reference if the plane update fails.
648 if (req
->flags
& DRM_MODE_CURSOR_BO
) {
650 fb
= drm_internal_framebuffer_create(dev
, &fbreq
, file_priv
);
652 DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n");
655 fb
->hot_x
= req
->hot_x
;
656 fb
->hot_y
= req
->hot_y
;
661 fb
= crtc
->cursor
->fb
;
663 drm_framebuffer_get(fb
);
666 if (req
->flags
& DRM_MODE_CURSOR_MOVE
) {
670 crtc_x
= crtc
->cursor_x
;
671 crtc_y
= crtc
->cursor_y
;
677 src_w
= fb
->width
<< 16;
678 src_h
= fb
->height
<< 16;
682 * setplane_internal will take care of deref'ing either the old or new
683 * framebuffer depending on success.
685 ret
= __setplane_internal(crtc
->cursor
, crtc
, fb
,
686 crtc_x
, crtc_y
, crtc_w
, crtc_h
,
687 0, 0, src_w
, src_h
, ctx
);
689 /* Update successful; save new cursor position, if necessary */
690 if (ret
== 0 && req
->flags
& DRM_MODE_CURSOR_MOVE
) {
691 crtc
->cursor_x
= req
->x
;
692 crtc
->cursor_y
= req
->y
;
698 static int drm_mode_cursor_common(struct drm_device
*dev
,
699 struct drm_mode_cursor2
*req
,
700 struct drm_file
*file_priv
)
702 struct drm_crtc
*crtc
;
703 struct drm_modeset_acquire_ctx ctx
;
706 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
709 if (!req
->flags
|| (~DRM_MODE_CURSOR_FLAGS
& req
->flags
))
712 crtc
= drm_crtc_find(dev
, req
->crtc_id
);
714 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req
->crtc_id
);
718 drm_modeset_acquire_init(&ctx
, 0);
720 ret
= drm_modeset_lock(&crtc
->mutex
, &ctx
);
724 * If this crtc has a universal cursor plane, call that plane's update
725 * handler rather than using legacy cursor handlers.
728 ret
= drm_modeset_lock(&crtc
->cursor
->mutex
, &ctx
);
732 ret
= drm_mode_cursor_universal(crtc
, req
, file_priv
, &ctx
);
736 if (req
->flags
& DRM_MODE_CURSOR_BO
) {
737 if (!crtc
->funcs
->cursor_set
&& !crtc
->funcs
->cursor_set2
) {
741 /* Turns off the cursor if handle is 0 */
742 if (crtc
->funcs
->cursor_set2
)
743 ret
= crtc
->funcs
->cursor_set2(crtc
, file_priv
, req
->handle
,
744 req
->width
, req
->height
, req
->hot_x
, req
->hot_y
);
746 ret
= crtc
->funcs
->cursor_set(crtc
, file_priv
, req
->handle
,
747 req
->width
, req
->height
);
750 if (req
->flags
& DRM_MODE_CURSOR_MOVE
) {
751 if (crtc
->funcs
->cursor_move
) {
752 ret
= crtc
->funcs
->cursor_move(crtc
, req
->x
, req
->y
);
759 if (ret
== -EDEADLK
) {
760 drm_modeset_backoff(&ctx
);
764 drm_modeset_drop_locks(&ctx
);
765 drm_modeset_acquire_fini(&ctx
);
772 int drm_mode_cursor_ioctl(struct drm_device
*dev
,
773 void *data
, struct drm_file
*file_priv
)
775 struct drm_mode_cursor
*req
= data
;
776 struct drm_mode_cursor2 new_req
;
778 memcpy(&new_req
, req
, sizeof(struct drm_mode_cursor
));
779 new_req
.hot_x
= new_req
.hot_y
= 0;
781 return drm_mode_cursor_common(dev
, &new_req
, file_priv
);
785 * Set the cursor configuration based on user request. This implements the 2nd
786 * version of the cursor ioctl, which allows userspace to additionally specify
787 * the hotspot of the pointer.
789 int drm_mode_cursor2_ioctl(struct drm_device
*dev
,
790 void *data
, struct drm_file
*file_priv
)
792 struct drm_mode_cursor2
*req
= data
;
794 return drm_mode_cursor_common(dev
, req
, file_priv
);
797 int drm_mode_page_flip_ioctl(struct drm_device
*dev
,
798 void *data
, struct drm_file
*file_priv
)
800 struct drm_mode_crtc_page_flip_target
*page_flip
= data
;
801 struct drm_crtc
*crtc
;
802 struct drm_framebuffer
*fb
= NULL
;
803 struct drm_pending_vblank_event
*e
= NULL
;
804 u32 target_vblank
= page_flip
->sequence
;
805 struct drm_modeset_acquire_ctx ctx
;
808 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
811 if (page_flip
->flags
& ~DRM_MODE_PAGE_FLIP_FLAGS
)
814 if (page_flip
->sequence
!= 0 && !(page_flip
->flags
& DRM_MODE_PAGE_FLIP_TARGET
))
817 /* Only one of the DRM_MODE_PAGE_FLIP_TARGET_ABSOLUTE/RELATIVE flags
820 if ((page_flip
->flags
& DRM_MODE_PAGE_FLIP_TARGET
) == DRM_MODE_PAGE_FLIP_TARGET
)
823 if ((page_flip
->flags
& DRM_MODE_PAGE_FLIP_ASYNC
) && !dev
->mode_config
.async_page_flip
)
826 crtc
= drm_crtc_find(dev
, page_flip
->crtc_id
);
830 if (crtc
->funcs
->page_flip_target
) {
834 r
= drm_crtc_vblank_get(crtc
);
838 current_vblank
= drm_crtc_vblank_count(crtc
);
840 switch (page_flip
->flags
& DRM_MODE_PAGE_FLIP_TARGET
) {
841 case DRM_MODE_PAGE_FLIP_TARGET_ABSOLUTE
:
842 if ((int)(target_vblank
- current_vblank
) > 1) {
843 DRM_DEBUG("Invalid absolute flip target %u, "
844 "must be <= %u\n", target_vblank
,
846 drm_crtc_vblank_put(crtc
);
850 case DRM_MODE_PAGE_FLIP_TARGET_RELATIVE
:
851 if (target_vblank
!= 0 && target_vblank
!= 1) {
852 DRM_DEBUG("Invalid relative flip target %u, "
853 "must be 0 or 1\n", target_vblank
);
854 drm_crtc_vblank_put(crtc
);
857 target_vblank
+= current_vblank
;
860 target_vblank
= current_vblank
+
861 !(page_flip
->flags
& DRM_MODE_PAGE_FLIP_ASYNC
);
864 } else if (crtc
->funcs
->page_flip
== NULL
||
865 (page_flip
->flags
& DRM_MODE_PAGE_FLIP_TARGET
)) {
869 drm_modeset_acquire_init(&ctx
, 0);
871 ret
= drm_modeset_lock(&crtc
->mutex
, &ctx
);
874 ret
= drm_modeset_lock(&crtc
->primary
->mutex
, &ctx
);
878 if (crtc
->primary
->fb
== NULL
) {
879 /* The framebuffer is currently unbound, presumably
880 * due to a hotplug event, that userspace has not
887 fb
= drm_framebuffer_lookup(dev
, page_flip
->fb_id
);
894 const struct drm_plane_state
*state
= crtc
->primary
->state
;
896 ret
= drm_framebuffer_check_src_coords(state
->src_x
,
902 ret
= drm_crtc_check_viewport(crtc
, crtc
->x
, crtc
->y
, &crtc
->mode
, fb
);
907 if (crtc
->primary
->fb
->format
!= fb
->format
) {
908 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
913 if (page_flip
->flags
& DRM_MODE_PAGE_FLIP_EVENT
) {
914 e
= kzalloc(sizeof *e
, GFP_KERNEL
);
919 e
->event
.base
.type
= DRM_EVENT_FLIP_COMPLETE
;
920 e
->event
.base
.length
= sizeof(e
->event
);
921 e
->event
.user_data
= page_flip
->user_data
;
922 ret
= drm_event_reserve_init(dev
, file_priv
, &e
->base
, &e
->event
.base
);
930 crtc
->primary
->old_fb
= crtc
->primary
->fb
;
931 if (crtc
->funcs
->page_flip_target
)
932 ret
= crtc
->funcs
->page_flip_target(crtc
, fb
, e
,
937 ret
= crtc
->funcs
->page_flip(crtc
, fb
, e
, page_flip
->flags
,
940 if (page_flip
->flags
& DRM_MODE_PAGE_FLIP_EVENT
)
941 drm_event_cancel_free(dev
, &e
->base
);
942 /* Keep the old fb, don't unref it. */
943 crtc
->primary
->old_fb
= NULL
;
945 crtc
->primary
->fb
= fb
;
946 /* Unref only the old framebuffer. */
952 drm_framebuffer_put(fb
);
953 if (crtc
->primary
->old_fb
)
954 drm_framebuffer_put(crtc
->primary
->old_fb
);
955 crtc
->primary
->old_fb
= NULL
;
957 if (ret
== -EDEADLK
) {
958 drm_modeset_backoff(&ctx
);
962 drm_modeset_drop_locks(&ctx
);
963 drm_modeset_acquire_fini(&ctx
);
965 if (ret
&& crtc
->funcs
->page_flip_target
)
966 drm_crtc_vblank_put(crtc
);