mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-25 05:34:00 +08:00
b9fc5e01d1
Add an atomic helper to implement dirtyfb support. This is needed to support DSI command-mode panels with x11 userspace (ie. when we can't rely on pageflips to trigger a flush to the panel). v2: Modified the helper to use plane fb_damage_clips property and removed plane_state::dirty flag. v3: - Use uapi drm_mode_rect. - Support annotate flags. v4: Correct kernel doc. Signed-off-by: Rob Clark <robdclark@gmail.com> Signed-off-by: Deepak Rawat <drawat@vmware.com> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com> Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
100 lines
3.8 KiB
C
100 lines
3.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0 OR MIT */
|
|
/**************************************************************************
|
|
*
|
|
* Copyright (c) 2018 VMware, Inc., Palo Alto, CA., USA
|
|
* All Rights Reserved.
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a
|
|
* copy of this software and associated documentation files (the
|
|
* "Software"), to deal in the Software without restriction, including
|
|
* without limitation the rights to use, copy, modify, merge, publish,
|
|
* distribute, sub license, and/or sell copies of the Software, and to
|
|
* permit persons to whom the Software is furnished to do so, subject to
|
|
* the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice (including the
|
|
* next paragraph) shall be included in all copies or substantial portions
|
|
* of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
|
|
* THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
|
|
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
|
|
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
|
|
* USE OR OTHER DEALINGS IN THE SOFTWARE.
|
|
*
|
|
* Authors:
|
|
* Deepak Rawat <drawat@vmware.com>
|
|
*
|
|
**************************************************************************/
|
|
|
|
#ifndef DRM_DAMAGE_HELPER_H_
|
|
#define DRM_DAMAGE_HELPER_H_
|
|
|
|
#include <drm/drm_atomic_helper.h>
|
|
|
|
/**
|
|
* drm_atomic_for_each_plane_damage - Iterator macro for plane damage.
|
|
* @iter: The iterator to advance.
|
|
* @rect: Return a rectangle in fb coordinate clipped to plane src.
|
|
*
|
|
* Note that if the first call to iterator macro return false then no need to do
|
|
* plane update. Iterator will return full plane src when damage is not passed
|
|
* by user-space.
|
|
*/
|
|
#define drm_atomic_for_each_plane_damage(iter, rect) \
|
|
while (drm_atomic_helper_damage_iter_next(iter, rect))
|
|
|
|
/**
|
|
* struct drm_atomic_helper_damage_iter - Closure structure for damage iterator.
|
|
*
|
|
* This structure tracks state needed to walk the list of plane damage clips.
|
|
*/
|
|
struct drm_atomic_helper_damage_iter {
|
|
/* private: Plane src in whole number. */
|
|
struct drm_rect plane_src;
|
|
/* private: Rectangles in plane damage blob. */
|
|
const struct drm_rect *clips;
|
|
/* private: Number of rectangles in plane damage blob. */
|
|
uint32_t num_clips;
|
|
/* private: Current clip iterator is advancing on. */
|
|
uint32_t curr_clip;
|
|
/* private: Whether need full plane update. */
|
|
bool full_update;
|
|
};
|
|
|
|
void drm_plane_enable_fb_damage_clips(struct drm_plane *plane);
|
|
void drm_atomic_helper_check_plane_damage(struct drm_atomic_state *state,
|
|
struct drm_plane_state *plane_state);
|
|
int drm_atomic_helper_dirtyfb(struct drm_framebuffer *fb,
|
|
struct drm_file *file_priv, unsigned int flags,
|
|
unsigned int color, struct drm_clip_rect *clips,
|
|
unsigned int num_clips);
|
|
void
|
|
drm_atomic_helper_damage_iter_init(struct drm_atomic_helper_damage_iter *iter,
|
|
const struct drm_plane_state *old_state,
|
|
const struct drm_plane_state *new_state);
|
|
bool
|
|
drm_atomic_helper_damage_iter_next(struct drm_atomic_helper_damage_iter *iter,
|
|
struct drm_rect *rect);
|
|
|
|
/**
|
|
* drm_helper_get_plane_damage_clips - Returns damage clips in &drm_rect.
|
|
* @state: Plane state.
|
|
*
|
|
* Returns plane damage rectangles in internal &drm_rect. Currently &drm_rect
|
|
* can be obtained by simply typecasting &drm_mode_rect. This is because both
|
|
* are signed 32 and during drm_atomic_check_only() it is verified that damage
|
|
* clips are inside fb.
|
|
*
|
|
* Return: Clips in plane fb_damage_clips blob property.
|
|
*/
|
|
static inline struct drm_rect *
|
|
drm_helper_get_plane_damage_clips(const struct drm_plane_state *state)
|
|
{
|
|
return (struct drm_rect *)drm_plane_get_damage_clips(state);
|
|
}
|
|
|
|
#endif
|