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1/* SPDX-License-Identifier: GPL-2.0 OR MIT */2/**************************************************************************3 *4 * Copyright (c) 2018 VMware, Inc., Palo Alto, CA., USA5 * All Rights Reserved.6 *7 * Permission is hereby granted, free of charge, to any person obtaining a8 * copy of this software and associated documentation files (the9 * "Software"), to deal in the Software without restriction, including10 * without limitation the rights to use, copy, modify, merge, publish,11 * distribute, sub license, and/or sell copies of the Software, and to12 * permit persons to whom the Software is furnished to do so, subject to13 * the following conditions:14 *15 * The above copyright notice and this permission notice (including the16 * next paragraph) shall be included in all copies or substantial portions17 * of the Software.18 *19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR20 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,21 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL22 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,23 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR24 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE25 * USE OR OTHER DEALINGS IN THE SOFTWARE.26 *27 * Authors:28 * Deepak Rawat <drawat@vmware.com>29 *30 **************************************************************************/31 32#ifndef DRM_DAMAGE_HELPER_H_33#define DRM_DAMAGE_HELPER_H_34 35#include <drm/drm_atomic_helper.h>36 37/**38 * drm_atomic_for_each_plane_damage - Iterator macro for plane damage.39 * @iter: The iterator to advance.40 * @rect: Return a rectangle in fb coordinate clipped to plane src.41 *42 * Note that if the first call to iterator macro return false then no need to do43 * plane update. Iterator will return full plane src when damage is not passed44 * by user-space.45 */46#define drm_atomic_for_each_plane_damage(iter, rect) \47 while (drm_atomic_helper_damage_iter_next(iter, rect))48 49/**50 * struct drm_atomic_helper_damage_iter - Closure structure for damage iterator.51 *52 * This structure tracks state needed to walk the list of plane damage clips.53 */54struct drm_atomic_helper_damage_iter {55 /* private: Plane src in whole number. */56 struct drm_rect plane_src;57 /* private: Rectangles in plane damage blob. */58 const struct drm_rect *clips;59 /* private: Number of rectangles in plane damage blob. */60 uint32_t num_clips;61 /* private: Current clip iterator is advancing on. */62 uint32_t curr_clip;63 /* private: Whether need full plane update. */64 bool full_update;65};66 67void drm_atomic_helper_check_plane_damage(struct drm_atomic_state *state,68 struct drm_plane_state *plane_state);69int drm_atomic_helper_dirtyfb(struct drm_framebuffer *fb,70 struct drm_file *file_priv, unsigned int flags,71 unsigned int color, struct drm_clip_rect *clips,72 unsigned int num_clips);73void74drm_atomic_helper_damage_iter_init(struct drm_atomic_helper_damage_iter *iter,75 const struct drm_plane_state *old_state,76 const struct drm_plane_state *new_state);77bool78drm_atomic_helper_damage_iter_next(struct drm_atomic_helper_damage_iter *iter,79 struct drm_rect *rect);80bool drm_atomic_helper_damage_merged(const struct drm_plane_state *old_state,81 struct drm_plane_state *state,82 struct drm_rect *rect);83 84#endif85