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5b809074 NT |
1 | /* |
2 | * Copyright (C) 2016 Noralf Trønnes | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License as published by | |
6 | * the Free Software Foundation; either version 2 of the License, or | |
7 | * (at your option) any later version. | |
8 | */ | |
9 | ||
10 | #ifndef __LINUX_DRM_SIMPLE_KMS_HELPER_H | |
11 | #define __LINUX_DRM_SIMPLE_KMS_HELPER_H | |
12 | ||
a6a9534c NT |
13 | #include <drm/drm_crtc.h> |
14 | #include <drm/drm_encoder.h> | |
15 | #include <drm/drm_plane.h> | |
16 | ||
5b809074 NT |
17 | struct drm_simple_display_pipe; |
18 | ||
19 | /** | |
20 | * struct drm_simple_display_pipe_funcs - helper operations for a simple | |
21 | * display pipeline | |
22 | */ | |
23 | struct drm_simple_display_pipe_funcs { | |
24 | /** | |
25 | * @enable: | |
26 | * | |
27 | * This function should be used to enable the pipeline. | |
28 | * It is called when the underlying crtc is enabled. | |
29 | * This hook is optional. | |
30 | */ | |
31 | void (*enable)(struct drm_simple_display_pipe *pipe, | |
32 | struct drm_crtc_state *crtc_state); | |
33 | /** | |
34 | * @disable: | |
35 | * | |
36 | * This function should be used to disable the pipeline. | |
37 | * It is called when the underlying crtc is disabled. | |
38 | * This hook is optional. | |
39 | */ | |
40 | void (*disable)(struct drm_simple_display_pipe *pipe); | |
41 | ||
42 | /** | |
43 | * @check: | |
44 | * | |
45 | * This function is called in the check phase of an atomic update, | |
46 | * specifically when the underlying plane is checked. | |
47 | * The simple display pipeline helpers already check that the plane is | |
48 | * not scaled, fills the entire visible area and is always enabled | |
49 | * when the crtc is also enabled. | |
50 | * This hook is optional. | |
51 | * | |
52 | * RETURNS: | |
53 | * | |
54 | * 0 on success, -EINVAL if the state or the transition can't be | |
55 | * supported, -ENOMEM on memory allocation failure and -EDEADLK if an | |
56 | * attempt to obtain another state object ran into a &drm_modeset_lock | |
57 | * deadlock. | |
58 | */ | |
59 | int (*check)(struct drm_simple_display_pipe *pipe, | |
60 | struct drm_plane_state *plane_state, | |
61 | struct drm_crtc_state *crtc_state); | |
62 | /** | |
63 | * @update: | |
64 | * | |
65 | * This function is called when the underlying plane state is updated. | |
66 | * This hook is optional. | |
6dcf0de7 DV |
67 | * |
68 | * This is the function drivers should submit the | |
69 | * &drm_pending_vblank_event from. Using either | |
70 | * drm_crtc_arm_vblank_event(), when the driver supports vblank | |
71 | * interrupt handling, or drm_crtc_send_vblank_event() directly in case | |
72 | * the hardware lacks vblank support entirely. | |
5b809074 NT |
73 | */ |
74 | void (*update)(struct drm_simple_display_pipe *pipe, | |
bcd2ba02 | 75 | struct drm_plane_state *old_plane_state); |
7d83a155 MV |
76 | |
77 | /** | |
78 | * @prepare_fb: | |
79 | * | |
6806cdf9 DV |
80 | * Optional, called by &drm_plane_helper_funcs.prepare_fb. Please read |
81 | * the documentation for the &drm_plane_helper_funcs.prepare_fb hook for | |
82 | * more details. | |
7d83a155 MV |
83 | */ |
84 | int (*prepare_fb)(struct drm_simple_display_pipe *pipe, | |
85 | struct drm_plane_state *plane_state); | |
86 | ||
87 | /** | |
88 | * @cleanup_fb: | |
89 | * | |
6806cdf9 DV |
90 | * Optional, called by &drm_plane_helper_funcs.cleanup_fb. Please read |
91 | * the documentation for the &drm_plane_helper_funcs.cleanup_fb hook for | |
92 | * more details. | |
7d83a155 MV |
93 | */ |
94 | void (*cleanup_fb)(struct drm_simple_display_pipe *pipe, | |
95 | struct drm_plane_state *plane_state); | |
5b809074 NT |
96 | }; |
97 | ||
98 | /** | |
99 | * struct drm_simple_display_pipe - simple display pipeline | |
100 | * @crtc: CRTC control structure | |
101 | * @plane: Plane control structure | |
102 | * @encoder: Encoder control structure | |
103 | * @connector: Connector control structure | |
104 | * @funcs: Pipeline control functions (optional) | |
105 | * | |
106 | * Simple display pipeline with plane, crtc and encoder collapsed into one | |
107 | * entity. It should be initialized by calling drm_simple_display_pipe_init(). | |
108 | */ | |
109 | struct drm_simple_display_pipe { | |
110 | struct drm_crtc crtc; | |
111 | struct drm_plane plane; | |
112 | struct drm_encoder encoder; | |
113 | struct drm_connector *connector; | |
114 | ||
115 | const struct drm_simple_display_pipe_funcs *funcs; | |
116 | }; | |
117 | ||
315486c6 AM |
118 | int drm_simple_display_pipe_attach_bridge(struct drm_simple_display_pipe *pipe, |
119 | struct drm_bridge *bridge); | |
120 | ||
5b809074 NT |
121 | int drm_simple_display_pipe_init(struct drm_device *dev, |
122 | struct drm_simple_display_pipe *pipe, | |
123 | const struct drm_simple_display_pipe_funcs *funcs, | |
124 | const uint32_t *formats, unsigned int format_count, | |
e6fc3b68 | 125 | const uint64_t *format_modifiers, |
5b809074 NT |
126 | struct drm_connector *connector); |
127 | ||
128 | #endif /* __LINUX_DRM_SIMPLE_KMS_HELPER_H */ |