/* 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_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);
bool drm_atomic_helper_damage_merged(const struct drm_plane_state *old_state,
const struct drm_plane_state *state,
struct drm_rect *rect);
#endif
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(vorverarbeitet am 2026-09-29)
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