Commit | Line | Data |
---|---|---|
ea2c67bb MR |
1 | /* |
2 | * Copyright © 2014 Intel Corporation | |
3 | * | |
4 | * Permission is hereby granted, free of charge, to any person obtaining a | |
5 | * copy of this software and associated documentation files (the "Software"), | |
6 | * to deal in the Software without restriction, including without limitation | |
7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
8 | * and/or sell copies of the Software, and to permit persons to whom the | |
9 | * Software is furnished to do so, subject to the following conditions: | |
10 | * | |
11 | * The above copyright notice and this permission notice (including the next | |
12 | * paragraph) shall be included in all copies or substantial portions of the | |
13 | * Software. | |
14 | * | |
15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
18 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING | |
20 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER | |
21 | * DEALINGS IN THE SOFTWARE. | |
22 | */ | |
23 | ||
24 | /** | |
cd524719 | 25 | * DOC: atomic plane helpers |
ea2c67bb MR |
26 | * |
27 | * The functions here are used by the atomic plane helper functions to | |
28 | * implement legacy plane updates (i.e., drm_plane->update_plane() and | |
29 | * drm_plane->disable_plane()). This allows plane updates to use the | |
30 | * atomic state infrastructure and perform plane updates as separate | |
31 | * prepare/check/commit/cleanup steps. | |
32 | */ | |
33 | ||
34 | #include <drm/drmP.h> | |
35 | #include <drm/drm_atomic_helper.h> | |
36 | #include <drm/drm_plane_helper.h> | |
37 | #include "intel_drv.h" | |
38 | ||
8e7d688b MR |
39 | /** |
40 | * intel_create_plane_state - create plane state object | |
41 | * @plane: drm plane | |
42 | * | |
43 | * Allocates a fresh plane state for the given plane and sets some of | |
44 | * the state values to sensible initial values. | |
45 | * | |
46 | * Returns: A newly allocated plane state, or NULL on failure | |
47 | */ | |
48 | struct intel_plane_state * | |
49 | intel_create_plane_state(struct drm_plane *plane) | |
50 | { | |
51 | struct intel_plane_state *state; | |
52 | ||
53 | state = kzalloc(sizeof(*state), GFP_KERNEL); | |
54 | if (!state) | |
55 | return NULL; | |
56 | ||
57 | state->base.plane = plane; | |
58 | state->base.rotation = BIT(DRM_ROTATE_0); | |
59 | ||
60 | return state; | |
61 | } | |
62 | ||
ea2c67bb MR |
63 | /** |
64 | * intel_plane_duplicate_state - duplicate plane state | |
65 | * @plane: drm plane | |
66 | * | |
67 | * Allocates and returns a copy of the plane state (both common and | |
68 | * Intel-specific) for the specified plane. | |
69 | * | |
8e7d688b | 70 | * Returns: The newly allocated plane state, or NULL on failure. |
ea2c67bb MR |
71 | */ |
72 | struct drm_plane_state * | |
73 | intel_plane_duplicate_state(struct drm_plane *plane) | |
74 | { | |
8e7d688b MR |
75 | struct drm_plane_state *state; |
76 | struct intel_plane_state *intel_state; | |
ea2c67bb | 77 | |
8e7d688b MR |
78 | if (WARN_ON(!plane->state)) |
79 | intel_state = intel_create_plane_state(plane); | |
ea2c67bb | 80 | else |
8e7d688b MR |
81 | intel_state = kmemdup(plane->state, sizeof(*intel_state), |
82 | GFP_KERNEL); | |
ea2c67bb | 83 | |
8e7d688b | 84 | if (!intel_state) |
ea2c67bb MR |
85 | return NULL; |
86 | ||
8e7d688b MR |
87 | state = &intel_state->base; |
88 | if (state->fb) | |
89 | drm_framebuffer_reference(state->fb); | |
ea2c67bb | 90 | |
8e7d688b | 91 | return state; |
ea2c67bb MR |
92 | } |
93 | ||
94 | /** | |
95 | * intel_plane_destroy_state - destroy plane state | |
96 | * @plane: drm plane | |
cd524719 | 97 | * @state: state object to destroy |
ea2c67bb MR |
98 | * |
99 | * Destroys the plane state (both common and Intel-specific) for the | |
100 | * specified plane. | |
101 | */ | |
102 | void | |
103 | intel_plane_destroy_state(struct drm_plane *plane, | |
104 | struct drm_plane_state *state) | |
105 | { | |
106 | drm_atomic_helper_plane_destroy_state(plane, state); | |
107 | } | |
108 | ||
109 | static int intel_plane_atomic_check(struct drm_plane *plane, | |
110 | struct drm_plane_state *state) | |
111 | { | |
112 | struct drm_crtc *crtc = state->crtc; | |
113 | struct intel_crtc *intel_crtc; | |
114 | struct intel_plane *intel_plane = to_intel_plane(plane); | |
115 | struct intel_plane_state *intel_state = to_intel_plane_state(state); | |
116 | ||
117 | crtc = crtc ? crtc : plane->crtc; | |
118 | intel_crtc = to_intel_crtc(crtc); | |
119 | ||
120 | /* | |
121 | * The original src/dest coordinates are stored in state->base, but | |
122 | * we want to keep another copy internal to our driver that we can | |
123 | * clip/modify ourselves. | |
124 | */ | |
125 | intel_state->src.x1 = state->src_x; | |
126 | intel_state->src.y1 = state->src_y; | |
127 | intel_state->src.x2 = state->src_x + state->src_w; | |
128 | intel_state->src.y2 = state->src_y + state->src_h; | |
129 | intel_state->dst.x1 = state->crtc_x; | |
130 | intel_state->dst.y1 = state->crtc_y; | |
131 | intel_state->dst.x2 = state->crtc_x + state->crtc_w; | |
132 | intel_state->dst.y2 = state->crtc_y + state->crtc_h; | |
133 | ||
134 | /* Clip all planes to CRTC size, or 0x0 if CRTC is disabled */ | |
135 | intel_state->clip.x1 = 0; | |
136 | intel_state->clip.y1 = 0; | |
137 | intel_state->clip.x2 = | |
6e3c9717 | 138 | intel_crtc->active ? intel_crtc->config->pipe_src_w : 0; |
ea2c67bb | 139 | intel_state->clip.y2 = |
6e3c9717 | 140 | intel_crtc->active ? intel_crtc->config->pipe_src_h : 0; |
ea2c67bb MR |
141 | |
142 | /* | |
143 | * Disabling a plane is always okay; we just need to update | |
144 | * fb tracking in a special way since cleanup_fb() won't | |
145 | * get called by the plane helpers. | |
146 | */ | |
147 | if (state->fb == NULL && plane->state->fb != NULL) { | |
148 | /* | |
149 | * 'prepare' is never called when plane is being disabled, so | |
150 | * we need to handle frontbuffer tracking as a special case | |
151 | */ | |
152 | intel_crtc->atomic.disabled_planes |= | |
153 | (1 << drm_plane_index(plane)); | |
154 | } | |
155 | ||
156 | return intel_plane->check_plane(plane, intel_state); | |
157 | } | |
158 | ||
159 | static void intel_plane_atomic_update(struct drm_plane *plane, | |
160 | struct drm_plane_state *old_state) | |
161 | { | |
162 | struct intel_plane *intel_plane = to_intel_plane(plane); | |
163 | struct intel_plane_state *intel_state = | |
164 | to_intel_plane_state(plane->state); | |
165 | ||
166 | /* Don't disable an already disabled plane */ | |
167 | if (!plane->state->fb && !old_state->fb) | |
168 | return; | |
169 | ||
170 | intel_plane->commit_plane(plane, intel_state); | |
171 | } | |
172 | ||
173 | const struct drm_plane_helper_funcs intel_plane_helper_funcs = { | |
174 | .prepare_fb = intel_prepare_plane_fb, | |
175 | .cleanup_fb = intel_cleanup_plane_fb, | |
176 | .atomic_check = intel_plane_atomic_check, | |
177 | .atomic_update = intel_plane_atomic_update, | |
178 | }; | |
179 |