1 /* SPDX-License-Identifier: GPL-2.0 OR MIT */ 2 /************************************************************************** 3 * 4 * Copyright (c) 2018 VMware, Inc., Palo Alto, CA., USA 5 * All Rights Reserved. 6 * 7 * Permission is hereby granted, free of charge, to any person obtaining a 8 * copy of this software and associated documentation files (the 9 * "Software"), to deal in the Software without restriction, including 10 * without limitation the rights to use, copy, modify, merge, publish, 11 * distribute, sub license, and/or sell copies of the Software, and to 12 * permit persons to whom the Software is furnished to do so, subject to 13 * the following conditions: 14 * 15 * The above copyright notice and this permission notice (including the 16 * next paragraph) shall be included in all copies or substantial portions 17 * of the Software. 18 * 19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 20 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 21 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL 22 * 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 OR 24 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE 25 * 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 do 43 * plane update. Iterator will return full plane src when damage is not passed 44 * 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 */ 54 struct 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 67 void drm_atomic_helper_check_plane_damage(struct drm_atomic_state *state, 68 struct drm_plane_state *plane_state); 69 int 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); 73 void 74 drm_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); 77 bool 78 drm_atomic_helper_damage_iter_next(struct drm_atomic_helper_damage_iter *iter, 79 struct drm_rect *rect); 80 bool 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 #endif 85