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_get(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 void drm_plane_force_disable(struct drm_plane
*plane
)
288 plane
->old_fb
= plane
->fb
;
289 ret
= plane
->funcs
->disable_plane(plane
);
291 DRM_ERROR("failed to disable plane with busy fb\n");
292 plane
->old_fb
= NULL
;
295 /* disconnect the plane from the fb and crtc: */
296 drm_framebuffer_unreference(plane
->old_fb
);
297 plane
->old_fb
= NULL
;
301 EXPORT_SYMBOL(drm_plane_force_disable
);
304 * drm_mode_plane_set_obj_prop - set the value of a property
305 * @plane: drm plane object to set property value for
306 * @property: property to set
307 * @value: value the property should be set to
309 * This functions sets a given property on a given plane object. This function
310 * calls the driver's ->set_property callback and changes the software state of
311 * the property if the callback succeeds.
314 * Zero on success, error code on failure.
316 int drm_mode_plane_set_obj_prop(struct drm_plane
*plane
,
317 struct drm_property
*property
,
321 struct drm_mode_object
*obj
= &plane
->base
;
323 if (plane
->funcs
->set_property
)
324 ret
= plane
->funcs
->set_property(plane
, property
, value
);
326 drm_object_property_set_value(obj
, property
, value
);
330 EXPORT_SYMBOL(drm_mode_plane_set_obj_prop
);
332 int drm_mode_getplane_res(struct drm_device
*dev
, void *data
,
333 struct drm_file
*file_priv
)
335 struct drm_mode_get_plane_res
*plane_resp
= data
;
336 struct drm_mode_config
*config
;
337 struct drm_plane
*plane
;
338 uint32_t __user
*plane_ptr
;
342 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
345 config
= &dev
->mode_config
;
347 if (file_priv
->universal_planes
)
348 num_planes
= config
->num_total_plane
;
350 num_planes
= config
->num_overlay_plane
;
353 * This ioctl is called twice, once to determine how much space is
354 * needed, and the 2nd time to fill it.
357 (plane_resp
->count_planes
>= num_planes
)) {
358 plane_ptr
= (uint32_t __user
*)(unsigned long)plane_resp
->plane_id_ptr
;
360 /* Plane lists are invariant, no locking needed. */
361 drm_for_each_plane(plane
, dev
) {
363 * Unless userspace set the 'universal planes'
364 * capability bit, only advertise overlays.
366 if (plane
->type
!= DRM_PLANE_TYPE_OVERLAY
&&
367 !file_priv
->universal_planes
)
370 if (put_user(plane
->base
.id
, plane_ptr
+ copied
))
375 plane_resp
->count_planes
= num_planes
;
380 int drm_mode_getplane(struct drm_device
*dev
, void *data
,
381 struct drm_file
*file_priv
)
383 struct drm_mode_get_plane
*plane_resp
= data
;
384 struct drm_plane
*plane
;
385 uint32_t __user
*format_ptr
;
387 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
390 plane
= drm_plane_find(dev
, plane_resp
->plane_id
);
394 drm_modeset_lock(&plane
->mutex
, NULL
);
395 if (plane
->state
&& plane
->state
->crtc
)
396 plane_resp
->crtc_id
= plane
->state
->crtc
->base
.id
;
397 else if (!plane
->state
&& plane
->crtc
)
398 plane_resp
->crtc_id
= plane
->crtc
->base
.id
;
400 plane_resp
->crtc_id
= 0;
402 if (plane
->state
&& plane
->state
->fb
)
403 plane_resp
->fb_id
= plane
->state
->fb
->base
.id
;
404 else if (!plane
->state
&& plane
->fb
)
405 plane_resp
->fb_id
= plane
->fb
->base
.id
;
407 plane_resp
->fb_id
= 0;
408 drm_modeset_unlock(&plane
->mutex
);
410 plane_resp
->plane_id
= plane
->base
.id
;
411 plane_resp
->possible_crtcs
= plane
->possible_crtcs
;
412 plane_resp
->gamma_size
= 0;
415 * This ioctl is called twice, once to determine how much space is
416 * needed, and the 2nd time to fill it.
418 if (plane
->format_count
&&
419 (plane_resp
->count_format_types
>= plane
->format_count
)) {
420 format_ptr
= (uint32_t __user
*)(unsigned long)plane_resp
->format_type_ptr
;
421 if (copy_to_user(format_ptr
,
423 sizeof(uint32_t) * plane
->format_count
)) {
427 plane_resp
->count_format_types
= plane
->format_count
;
432 int drm_plane_check_pixel_format(const struct drm_plane
*plane
, u32 format
)
436 for (i
= 0; i
< plane
->format_count
; i
++) {
437 if (format
== plane
->format_types
[i
])
445 * setplane_internal - setplane handler for internal callers
447 * Note that we assume an extra reference has already been taken on fb. If the
448 * update fails, this reference will be dropped before return; if it succeeds,
449 * the previous framebuffer (if any) will be unreferenced instead.
451 * src_{x,y,w,h} are provided in 16.16 fixed point format
453 static int __setplane_internal(struct drm_plane
*plane
,
454 struct drm_crtc
*crtc
,
455 struct drm_framebuffer
*fb
,
456 int32_t crtc_x
, int32_t crtc_y
,
457 uint32_t crtc_w
, uint32_t crtc_h
,
458 /* src_{x,y,w,h} values are 16.16 fixed point */
459 uint32_t src_x
, uint32_t src_y
,
460 uint32_t src_w
, uint32_t src_h
)
464 /* No fb means shut it down */
466 plane
->old_fb
= plane
->fb
;
467 ret
= plane
->funcs
->disable_plane(plane
);
472 plane
->old_fb
= NULL
;
477 /* Check whether this plane is usable on this CRTC */
478 if (!(plane
->possible_crtcs
& drm_crtc_mask(crtc
))) {
479 DRM_DEBUG_KMS("Invalid crtc for plane\n");
484 /* Check whether this plane supports the fb pixel format. */
485 ret
= drm_plane_check_pixel_format(plane
, fb
->format
->format
);
487 struct drm_format_name_buf format_name
;
488 DRM_DEBUG_KMS("Invalid pixel format %s\n",
489 drm_get_format_name(fb
->format
->format
,
494 /* Give drivers some help against integer overflows */
495 if (crtc_w
> INT_MAX
||
496 crtc_x
> INT_MAX
- (int32_t) crtc_w
||
498 crtc_y
> INT_MAX
- (int32_t) crtc_h
) {
499 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
500 crtc_w
, crtc_h
, crtc_x
, crtc_y
);
505 ret
= drm_framebuffer_check_src_coords(src_x
, src_y
, src_w
, src_h
, fb
);
509 plane
->old_fb
= plane
->fb
;
510 ret
= plane
->funcs
->update_plane(plane
, crtc
, fb
,
511 crtc_x
, crtc_y
, crtc_w
, crtc_h
,
512 src_x
, src_y
, src_w
, src_h
);
518 plane
->old_fb
= NULL
;
523 drm_framebuffer_unreference(fb
);
525 drm_framebuffer_unreference(plane
->old_fb
);
526 plane
->old_fb
= NULL
;
531 static int setplane_internal(struct drm_plane
*plane
,
532 struct drm_crtc
*crtc
,
533 struct drm_framebuffer
*fb
,
534 int32_t crtc_x
, int32_t crtc_y
,
535 uint32_t crtc_w
, uint32_t crtc_h
,
536 /* src_{x,y,w,h} values are 16.16 fixed point */
537 uint32_t src_x
, uint32_t src_y
,
538 uint32_t src_w
, uint32_t src_h
)
542 drm_modeset_lock_all(plane
->dev
);
543 ret
= __setplane_internal(plane
, crtc
, fb
,
544 crtc_x
, crtc_y
, crtc_w
, crtc_h
,
545 src_x
, src_y
, src_w
, src_h
);
546 drm_modeset_unlock_all(plane
->dev
);
551 int drm_mode_setplane(struct drm_device
*dev
, void *data
,
552 struct drm_file
*file_priv
)
554 struct drm_mode_set_plane
*plane_req
= data
;
555 struct drm_plane
*plane
;
556 struct drm_crtc
*crtc
= NULL
;
557 struct drm_framebuffer
*fb
= NULL
;
559 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
563 * First, find the plane, crtc, and fb objects. If not available,
564 * we don't bother to call the driver.
566 plane
= drm_plane_find(dev
, plane_req
->plane_id
);
568 DRM_DEBUG_KMS("Unknown plane ID %d\n",
569 plane_req
->plane_id
);
573 if (plane_req
->fb_id
) {
574 fb
= drm_framebuffer_lookup(dev
, plane_req
->fb_id
);
576 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
581 crtc
= drm_crtc_find(dev
, plane_req
->crtc_id
);
583 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
590 * setplane_internal will take care of deref'ing either the old or new
591 * framebuffer depending on success.
593 return setplane_internal(plane
, crtc
, fb
,
594 plane_req
->crtc_x
, plane_req
->crtc_y
,
595 plane_req
->crtc_w
, plane_req
->crtc_h
,
596 plane_req
->src_x
, plane_req
->src_y
,
597 plane_req
->src_w
, plane_req
->src_h
);
600 static int drm_mode_cursor_universal(struct drm_crtc
*crtc
,
601 struct drm_mode_cursor2
*req
,
602 struct drm_file
*file_priv
)
604 struct drm_device
*dev
= crtc
->dev
;
605 struct drm_framebuffer
*fb
= NULL
;
606 struct drm_mode_fb_cmd2 fbreq
= {
608 .height
= req
->height
,
609 .pixel_format
= DRM_FORMAT_ARGB8888
,
610 .pitches
= { req
->width
* 4 },
611 .handles
= { req
->handle
},
613 int32_t crtc_x
, crtc_y
;
614 uint32_t crtc_w
= 0, crtc_h
= 0;
615 uint32_t src_w
= 0, src_h
= 0;
618 BUG_ON(!crtc
->cursor
);
619 WARN_ON(crtc
->cursor
->crtc
!= crtc
&& crtc
->cursor
->crtc
!= NULL
);
622 * Obtain fb we'll be using (either new or existing) and take an extra
623 * reference to it if fb != null. setplane will take care of dropping
624 * the reference if the plane update fails.
626 if (req
->flags
& DRM_MODE_CURSOR_BO
) {
628 fb
= drm_internal_framebuffer_create(dev
, &fbreq
, file_priv
);
630 DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n");
633 fb
->hot_x
= req
->hot_x
;
634 fb
->hot_y
= req
->hot_y
;
639 fb
= crtc
->cursor
->fb
;
641 drm_framebuffer_reference(fb
);
644 if (req
->flags
& DRM_MODE_CURSOR_MOVE
) {
648 crtc_x
= crtc
->cursor_x
;
649 crtc_y
= crtc
->cursor_y
;
655 src_w
= fb
->width
<< 16;
656 src_h
= fb
->height
<< 16;
660 * setplane_internal will take care of deref'ing either the old or new
661 * framebuffer depending on success.
663 ret
= __setplane_internal(crtc
->cursor
, crtc
, fb
,
664 crtc_x
, crtc_y
, crtc_w
, crtc_h
,
667 /* Update successful; save new cursor position, if necessary */
668 if (ret
== 0 && req
->flags
& DRM_MODE_CURSOR_MOVE
) {
669 crtc
->cursor_x
= req
->x
;
670 crtc
->cursor_y
= req
->y
;
676 static int drm_mode_cursor_common(struct drm_device
*dev
,
677 struct drm_mode_cursor2
*req
,
678 struct drm_file
*file_priv
)
680 struct drm_crtc
*crtc
;
683 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
686 if (!req
->flags
|| (~DRM_MODE_CURSOR_FLAGS
& req
->flags
))
689 crtc
= drm_crtc_find(dev
, req
->crtc_id
);
691 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req
->crtc_id
);
696 * If this crtc has a universal cursor plane, call that plane's update
697 * handler rather than using legacy cursor handlers.
699 drm_modeset_lock_crtc(crtc
, crtc
->cursor
);
701 ret
= drm_mode_cursor_universal(crtc
, req
, file_priv
);
705 if (req
->flags
& DRM_MODE_CURSOR_BO
) {
706 if (!crtc
->funcs
->cursor_set
&& !crtc
->funcs
->cursor_set2
) {
710 /* Turns off the cursor if handle is 0 */
711 if (crtc
->funcs
->cursor_set2
)
712 ret
= crtc
->funcs
->cursor_set2(crtc
, file_priv
, req
->handle
,
713 req
->width
, req
->height
, req
->hot_x
, req
->hot_y
);
715 ret
= crtc
->funcs
->cursor_set(crtc
, file_priv
, req
->handle
,
716 req
->width
, req
->height
);
719 if (req
->flags
& DRM_MODE_CURSOR_MOVE
) {
720 if (crtc
->funcs
->cursor_move
) {
721 ret
= crtc
->funcs
->cursor_move(crtc
, req
->x
, req
->y
);
728 drm_modeset_unlock_crtc(crtc
);
735 int drm_mode_cursor_ioctl(struct drm_device
*dev
,
736 void *data
, struct drm_file
*file_priv
)
738 struct drm_mode_cursor
*req
= data
;
739 struct drm_mode_cursor2 new_req
;
741 memcpy(&new_req
, req
, sizeof(struct drm_mode_cursor
));
742 new_req
.hot_x
= new_req
.hot_y
= 0;
744 return drm_mode_cursor_common(dev
, &new_req
, file_priv
);
748 * Set the cursor configuration based on user request. This implements the 2nd
749 * version of the cursor ioctl, which allows userspace to additionally specify
750 * the hotspot of the pointer.
752 int drm_mode_cursor2_ioctl(struct drm_device
*dev
,
753 void *data
, struct drm_file
*file_priv
)
755 struct drm_mode_cursor2
*req
= data
;
757 return drm_mode_cursor_common(dev
, req
, file_priv
);
760 int drm_mode_page_flip_ioctl(struct drm_device
*dev
,
761 void *data
, struct drm_file
*file_priv
)
763 struct drm_mode_crtc_page_flip_target
*page_flip
= data
;
764 struct drm_crtc
*crtc
;
765 struct drm_framebuffer
*fb
= NULL
;
766 struct drm_pending_vblank_event
*e
= NULL
;
767 u32 target_vblank
= page_flip
->sequence
;
770 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
773 if (page_flip
->flags
& ~DRM_MODE_PAGE_FLIP_FLAGS
)
776 if (page_flip
->sequence
!= 0 && !(page_flip
->flags
& DRM_MODE_PAGE_FLIP_TARGET
))
779 /* Only one of the DRM_MODE_PAGE_FLIP_TARGET_ABSOLUTE/RELATIVE flags
782 if ((page_flip
->flags
& DRM_MODE_PAGE_FLIP_TARGET
) == DRM_MODE_PAGE_FLIP_TARGET
)
785 if ((page_flip
->flags
& DRM_MODE_PAGE_FLIP_ASYNC
) && !dev
->mode_config
.async_page_flip
)
788 crtc
= drm_crtc_find(dev
, page_flip
->crtc_id
);
792 if (crtc
->funcs
->page_flip_target
) {
796 r
= drm_crtc_vblank_get(crtc
);
800 current_vblank
= drm_crtc_vblank_count(crtc
);
802 switch (page_flip
->flags
& DRM_MODE_PAGE_FLIP_TARGET
) {
803 case DRM_MODE_PAGE_FLIP_TARGET_ABSOLUTE
:
804 if ((int)(target_vblank
- current_vblank
) > 1) {
805 DRM_DEBUG("Invalid absolute flip target %u, "
806 "must be <= %u\n", target_vblank
,
808 drm_crtc_vblank_put(crtc
);
812 case DRM_MODE_PAGE_FLIP_TARGET_RELATIVE
:
813 if (target_vblank
!= 0 && target_vblank
!= 1) {
814 DRM_DEBUG("Invalid relative flip target %u, "
815 "must be 0 or 1\n", target_vblank
);
816 drm_crtc_vblank_put(crtc
);
819 target_vblank
+= current_vblank
;
822 target_vblank
= current_vblank
+
823 !(page_flip
->flags
& DRM_MODE_PAGE_FLIP_ASYNC
);
826 } else if (crtc
->funcs
->page_flip
== NULL
||
827 (page_flip
->flags
& DRM_MODE_PAGE_FLIP_TARGET
)) {
831 drm_modeset_lock_crtc(crtc
, crtc
->primary
);
832 if (crtc
->primary
->fb
== NULL
) {
833 /* The framebuffer is currently unbound, presumably
834 * due to a hotplug event, that userspace has not
841 fb
= drm_framebuffer_lookup(dev
, page_flip
->fb_id
);
848 const struct drm_plane_state
*state
= crtc
->primary
->state
;
850 ret
= drm_framebuffer_check_src_coords(state
->src_x
,
856 ret
= drm_crtc_check_viewport(crtc
, crtc
->x
, crtc
->y
, &crtc
->mode
, fb
);
861 if (crtc
->primary
->fb
->format
!= fb
->format
) {
862 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
867 if (page_flip
->flags
& DRM_MODE_PAGE_FLIP_EVENT
) {
868 e
= kzalloc(sizeof *e
, GFP_KERNEL
);
873 e
->event
.base
.type
= DRM_EVENT_FLIP_COMPLETE
;
874 e
->event
.base
.length
= sizeof(e
->event
);
875 e
->event
.user_data
= page_flip
->user_data
;
876 ret
= drm_event_reserve_init(dev
, file_priv
, &e
->base
, &e
->event
.base
);
883 crtc
->primary
->old_fb
= crtc
->primary
->fb
;
884 if (crtc
->funcs
->page_flip_target
)
885 ret
= crtc
->funcs
->page_flip_target(crtc
, fb
, e
,
889 ret
= crtc
->funcs
->page_flip(crtc
, fb
, e
, page_flip
->flags
);
891 if (page_flip
->flags
& DRM_MODE_PAGE_FLIP_EVENT
)
892 drm_event_cancel_free(dev
, &e
->base
);
893 /* Keep the old fb, don't unref it. */
894 crtc
->primary
->old_fb
= NULL
;
896 crtc
->primary
->fb
= fb
;
897 /* Unref only the old framebuffer. */
902 if (ret
&& crtc
->funcs
->page_flip_target
)
903 drm_crtc_vblank_put(crtc
);
905 drm_framebuffer_unreference(fb
);
906 if (crtc
->primary
->old_fb
)
907 drm_framebuffer_unreference(crtc
->primary
->old_fb
);
908 crtc
->primary
->old_fb
= NULL
;
909 drm_modeset_unlock_crtc(crtc
);