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 | |