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d2780b1f02
With fb_damage_clips blob property in drm_plane_state, this patch adds helper iterator to traverse the damage clips that lie inside plane src. Iterator will return full plane src as damage in case need full plane update or damage is not specified. v2: - Plane src clipping correction - Handle no plane update case in iter_next 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>
95 lines
3.6 KiB
C
95 lines
3.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0 OR MIT */
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/**************************************************************************
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*
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* Copyright (c) 2018 VMware, Inc., Palo Alto, CA., USA
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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* USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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* Authors:
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* Deepak Rawat <drawat@vmware.com>
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*
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**************************************************************************/
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#ifndef DRM_DAMAGE_HELPER_H_
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#define DRM_DAMAGE_HELPER_H_
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#include <drm/drm_atomic_helper.h>
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/**
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* drm_atomic_for_each_plane_damage - Iterator macro for plane damage.
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* @iter: The iterator to advance.
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* @rect: Return a rectangle in fb coordinate clipped to plane src.
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*
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* Note that if the first call to iterator macro return false then no need to do
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* plane update. Iterator will return full plane src when damage is not passed
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* by user-space.
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*/
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#define drm_atomic_for_each_plane_damage(iter, rect) \
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while (drm_atomic_helper_damage_iter_next(iter, rect))
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/**
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* struct drm_atomic_helper_damage_iter - Closure structure for damage iterator.
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*
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* This structure tracks state needed to walk the list of plane damage clips.
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*/
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struct drm_atomic_helper_damage_iter {
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/* private: Plane src in whole number. */
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struct drm_rect plane_src;
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/* private: Rectangles in plane damage blob. */
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const struct drm_rect *clips;
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/* private: Number of rectangles in plane damage blob. */
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uint32_t num_clips;
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/* private: Current clip iterator is advancing on. */
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uint32_t curr_clip;
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/* private: Whether need full plane update. */
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bool full_update;
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};
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void drm_plane_enable_fb_damage_clips(struct drm_plane *plane);
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void drm_atomic_helper_check_plane_damage(struct drm_atomic_state *state,
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struct drm_plane_state *plane_state);
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void
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drm_atomic_helper_damage_iter_init(struct drm_atomic_helper_damage_iter *iter,
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const struct drm_plane_state *old_state,
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const struct drm_plane_state *new_state);
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bool
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drm_atomic_helper_damage_iter_next(struct drm_atomic_helper_damage_iter *iter,
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struct drm_rect *rect);
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/**
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* drm_helper_get_plane_damage_clips - Returns damage clips in &drm_rect.
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* @state: Plane state.
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*
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* Returns plane damage rectangles in internal &drm_rect. Currently &drm_rect
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* can be obtained by simply typecasting &drm_mode_rect. This is because both
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* are signed 32 and during drm_atomic_check_only() it is verified that damage
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* clips are inside fb.
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*
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* Return: Clips in plane fb_damage_clips blob property.
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*/
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static inline struct drm_rect *
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drm_helper_get_plane_damage_clips(const struct drm_plane_state *state)
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{
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return (struct drm_rect *)drm_plane_get_damage_clips(state);
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}
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#endif
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