Current File : //usr/src/kernels/3.10.0-1160.88.1.el7.centos.plus.x86_64/include/drm/drm_damage_helper.h
/* 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
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