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Rev | Author | Line No. | Line |
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5271 | serge | 1 | /* |
2 | * Copyright (C) 2014 Red Hat |
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3 | * Copyright (C) 2014 Intel Corp. |
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4 | * |
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5 | * Permission is hereby granted, free of charge, to any person obtaining a |
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6 | * copy of this software and associated documentation files (the "Software"), |
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7 | * to deal in the Software without restriction, including without limitation |
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8 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
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9 | * and/or sell copies of the Software, and to permit persons to whom the |
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10 | * Software is furnished to do so, subject to the following conditions: |
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11 | * |
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12 | * The above copyright notice and this permission notice shall be included in |
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13 | * all copies or substantial portions of the Software. |
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14 | * |
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15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
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18 | * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR |
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19 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
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20 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
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21 | * OTHER DEALINGS IN THE SOFTWARE. |
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22 | * |
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23 | * Authors: |
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24 | * Rob Clark |
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25 | * Daniel Vetter |
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26 | */ |
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27 | |||
28 | |||
29 | #include |
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30 | #include |
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31 | #include |
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32 | |||
6084 | serge | 33 | /** |
34 | * drm_atomic_state_default_release - |
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35 | * release memory initialized by drm_atomic_state_init |
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36 | * @state: atomic state |
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37 | * |
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38 | * Free all the memory allocated by drm_atomic_state_init. |
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39 | * This is useful for drivers that subclass the atomic state. |
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40 | */ |
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41 | void drm_atomic_state_default_release(struct drm_atomic_state *state) |
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5271 | serge | 42 | { |
43 | kfree(state->connectors); |
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44 | kfree(state->connector_states); |
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45 | kfree(state->crtcs); |
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46 | kfree(state->crtc_states); |
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47 | kfree(state->planes); |
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48 | kfree(state->plane_states); |
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49 | } |
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6084 | serge | 50 | EXPORT_SYMBOL(drm_atomic_state_default_release); |
5271 | serge | 51 | |
52 | /** |
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6084 | serge | 53 | * drm_atomic_state_init - init new atomic state |
5271 | serge | 54 | * @dev: DRM device |
6084 | serge | 55 | * @state: atomic state |
5271 | serge | 56 | * |
6084 | serge | 57 | * Default implementation for filling in a new atomic state. |
58 | * This is useful for drivers that subclass the atomic state. |
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5271 | serge | 59 | */ |
6084 | serge | 60 | int |
61 | drm_atomic_state_init(struct drm_device *dev, struct drm_atomic_state *state) |
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5271 | serge | 62 | { |
6084 | serge | 63 | /* TODO legacy paths should maybe do a better job about |
64 | * setting this appropriately? |
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65 | */ |
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66 | state->allow_modeset = true; |
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5271 | serge | 67 | |
68 | state->crtcs = kcalloc(dev->mode_config.num_crtc, |
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69 | sizeof(*state->crtcs), GFP_KERNEL); |
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70 | if (!state->crtcs) |
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71 | goto fail; |
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72 | state->crtc_states = kcalloc(dev->mode_config.num_crtc, |
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73 | sizeof(*state->crtc_states), GFP_KERNEL); |
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74 | if (!state->crtc_states) |
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75 | goto fail; |
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76 | state->planes = kcalloc(dev->mode_config.num_total_plane, |
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77 | sizeof(*state->planes), GFP_KERNEL); |
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78 | if (!state->planes) |
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79 | goto fail; |
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80 | state->plane_states = kcalloc(dev->mode_config.num_total_plane, |
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81 | sizeof(*state->plane_states), GFP_KERNEL); |
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82 | if (!state->plane_states) |
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83 | goto fail; |
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84 | |||
85 | state->dev = dev; |
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86 | |||
6084 | serge | 87 | DRM_DEBUG_ATOMIC("Allocated atomic state %p\n", state); |
5271 | serge | 88 | |
6084 | serge | 89 | return 0; |
5271 | serge | 90 | fail: |
6084 | serge | 91 | drm_atomic_state_default_release(state); |
92 | return -ENOMEM; |
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93 | } |
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94 | EXPORT_SYMBOL(drm_atomic_state_init); |
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5271 | serge | 95 | |
6084 | serge | 96 | /** |
97 | * drm_atomic_state_alloc - allocate atomic state |
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98 | * @dev: DRM device |
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99 | * |
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100 | * This allocates an empty atomic state to track updates. |
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101 | */ |
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102 | struct drm_atomic_state * |
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103 | drm_atomic_state_alloc(struct drm_device *dev) |
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104 | { |
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105 | struct drm_mode_config *config = &dev->mode_config; |
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106 | struct drm_atomic_state *state; |
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107 | |||
108 | if (!config->funcs->atomic_state_alloc) { |
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109 | state = kzalloc(sizeof(*state), GFP_KERNEL); |
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110 | if (!state) |
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111 | return NULL; |
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112 | if (drm_atomic_state_init(dev, state) < 0) { |
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113 | kfree(state); |
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114 | return NULL; |
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115 | } |
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116 | return state; |
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117 | } |
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118 | |||
119 | return config->funcs->atomic_state_alloc(dev); |
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5271 | serge | 120 | } |
121 | EXPORT_SYMBOL(drm_atomic_state_alloc); |
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122 | |||
123 | /** |
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6084 | serge | 124 | * drm_atomic_state_default_clear - clear base atomic state |
5271 | serge | 125 | * @state: atomic state |
126 | * |
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6084 | serge | 127 | * Default implementation for clearing atomic state. |
128 | * This is useful for drivers that subclass the atomic state. |
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5271 | serge | 129 | */ |
6084 | serge | 130 | void drm_atomic_state_default_clear(struct drm_atomic_state *state) |
5271 | serge | 131 | { |
132 | struct drm_device *dev = state->dev; |
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133 | struct drm_mode_config *config = &dev->mode_config; |
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134 | int i; |
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135 | |||
6084 | serge | 136 | DRM_DEBUG_ATOMIC("Clearing atomic state %p\n", state); |
5271 | serge | 137 | |
138 | for (i = 0; i < state->num_connector; i++) { |
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139 | struct drm_connector *connector = state->connectors[i]; |
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140 | |||
6660 | serge | 141 | if (!connector || !connector->funcs) |
5271 | serge | 142 | continue; |
143 | |||
6084 | serge | 144 | /* |
145 | * FIXME: Async commits can race with connector unplugging and |
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146 | * there's currently nothing that prevents cleanup up state for |
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147 | * deleted connectors. As long as the callback doesn't look at |
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148 | * the connector we'll be fine though, so make sure that's the |
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149 | * case by setting all connector pointers to NULL. |
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150 | */ |
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151 | state->connector_states[i]->connector = NULL; |
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152 | connector->funcs->atomic_destroy_state(NULL, |
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5271 | serge | 153 | state->connector_states[i]); |
6084 | serge | 154 | state->connectors[i] = NULL; |
155 | state->connector_states[i] = NULL; |
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5271 | serge | 156 | } |
157 | |||
158 | for (i = 0; i < config->num_crtc; i++) { |
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159 | struct drm_crtc *crtc = state->crtcs[i]; |
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160 | |||
161 | if (!crtc) |
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162 | continue; |
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163 | |||
164 | crtc->funcs->atomic_destroy_state(crtc, |
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165 | state->crtc_states[i]); |
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6084 | serge | 166 | state->crtcs[i] = NULL; |
167 | state->crtc_states[i] = NULL; |
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5271 | serge | 168 | } |
169 | |||
170 | for (i = 0; i < config->num_total_plane; i++) { |
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171 | struct drm_plane *plane = state->planes[i]; |
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172 | |||
173 | if (!plane) |
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174 | continue; |
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175 | |||
176 | plane->funcs->atomic_destroy_state(plane, |
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177 | state->plane_states[i]); |
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6084 | serge | 178 | state->planes[i] = NULL; |
179 | state->plane_states[i] = NULL; |
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5271 | serge | 180 | } |
181 | } |
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6084 | serge | 182 | EXPORT_SYMBOL(drm_atomic_state_default_clear); |
183 | |||
184 | /** |
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185 | * drm_atomic_state_clear - clear state object |
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186 | * @state: atomic state |
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187 | * |
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188 | * When the w/w mutex algorithm detects a deadlock we need to back off and drop |
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189 | * all locks. So someone else could sneak in and change the current modeset |
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190 | * configuration. Which means that all the state assembled in @state is no |
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191 | * longer an atomic update to the current state, but to some arbitrary earlier |
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192 | * state. Which could break assumptions the driver's ->atomic_check likely |
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193 | * relies on. |
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194 | * |
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195 | * Hence we must clear all cached state and completely start over, using this |
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196 | * function. |
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197 | */ |
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198 | void drm_atomic_state_clear(struct drm_atomic_state *state) |
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199 | { |
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200 | struct drm_device *dev = state->dev; |
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201 | struct drm_mode_config *config = &dev->mode_config; |
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202 | |||
203 | if (config->funcs->atomic_state_clear) |
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204 | config->funcs->atomic_state_clear(state); |
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205 | else |
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206 | drm_atomic_state_default_clear(state); |
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207 | } |
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5271 | serge | 208 | EXPORT_SYMBOL(drm_atomic_state_clear); |
209 | |||
210 | /** |
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211 | * drm_atomic_state_free - free all memory for an atomic state |
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212 | * @state: atomic state to deallocate |
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213 | * |
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214 | * This frees all memory associated with an atomic state, including all the |
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215 | * per-object state for planes, crtcs and connectors. |
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216 | */ |
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217 | void drm_atomic_state_free(struct drm_atomic_state *state) |
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218 | { |
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6084 | serge | 219 | struct drm_device *dev; |
220 | struct drm_mode_config *config; |
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221 | |||
222 | if (!state) |
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223 | return; |
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224 | |||
225 | dev = state->dev; |
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226 | config = &dev->mode_config; |
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227 | |||
5271 | serge | 228 | drm_atomic_state_clear(state); |
229 | |||
6084 | serge | 230 | DRM_DEBUG_ATOMIC("Freeing atomic state %p\n", state); |
5271 | serge | 231 | |
6084 | serge | 232 | if (config->funcs->atomic_state_free) { |
233 | config->funcs->atomic_state_free(state); |
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234 | } else { |
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235 | drm_atomic_state_default_release(state); |
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236 | kfree(state); |
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237 | } |
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5271 | serge | 238 | } |
239 | EXPORT_SYMBOL(drm_atomic_state_free); |
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240 | |||
241 | /** |
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242 | * drm_atomic_get_crtc_state - get crtc state |
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243 | * @state: global atomic state object |
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244 | * @crtc: crtc to get state object for |
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245 | * |
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246 | * This function returns the crtc state for the given crtc, allocating it if |
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247 | * needed. It will also grab the relevant crtc lock to make sure that the state |
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248 | * is consistent. |
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249 | * |
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250 | * Returns: |
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251 | * |
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252 | * Either the allocated state or the error code encoded into the pointer. When |
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253 | * the error is EDEADLK then the w/w mutex code has detected a deadlock and the |
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254 | * entire atomic sequence must be restarted. All other errors are fatal. |
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255 | */ |
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256 | struct drm_crtc_state * |
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257 | drm_atomic_get_crtc_state(struct drm_atomic_state *state, |
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258 | struct drm_crtc *crtc) |
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259 | { |
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6084 | serge | 260 | int ret, index = drm_crtc_index(crtc); |
5271 | serge | 261 | struct drm_crtc_state *crtc_state; |
262 | |||
6084 | serge | 263 | crtc_state = drm_atomic_get_existing_crtc_state(state, crtc); |
264 | if (crtc_state) |
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265 | return crtc_state; |
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5271 | serge | 266 | |
267 | ret = drm_modeset_lock(&crtc->mutex, state->acquire_ctx); |
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268 | if (ret) |
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269 | return ERR_PTR(ret); |
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270 | |||
271 | crtc_state = crtc->funcs->atomic_duplicate_state(crtc); |
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272 | if (!crtc_state) |
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273 | return ERR_PTR(-ENOMEM); |
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274 | |||
275 | state->crtc_states[index] = crtc_state; |
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276 | state->crtcs[index] = crtc; |
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277 | crtc_state->state = state; |
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278 | |||
6937 | serge | 279 | DRM_DEBUG_ATOMIC("Added [CRTC:%d:%s] %p state to %p\n", |
280 | crtc->base.id, crtc->name, crtc_state, state); |
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5271 | serge | 281 | |
282 | return crtc_state; |
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283 | } |
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284 | EXPORT_SYMBOL(drm_atomic_get_crtc_state); |
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285 | |||
286 | /** |
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6084 | serge | 287 | * drm_atomic_set_mode_for_crtc - set mode for CRTC |
288 | * @state: the CRTC whose incoming state to update |
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289 | * @mode: kernel-internal mode to use for the CRTC, or NULL to disable |
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290 | * |
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291 | * Set a mode (originating from the kernel) on the desired CRTC state. Does |
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292 | * not change any other state properties, including enable, active, or |
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293 | * mode_changed. |
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294 | * |
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295 | * RETURNS: |
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296 | * Zero on success, error code on failure. Cannot return -EDEADLK. |
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297 | */ |
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298 | int drm_atomic_set_mode_for_crtc(struct drm_crtc_state *state, |
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299 | struct drm_display_mode *mode) |
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300 | { |
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301 | struct drm_mode_modeinfo umode; |
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302 | |||
303 | /* Early return for no change. */ |
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304 | if (mode && memcmp(&state->mode, mode, sizeof(*mode)) == 0) |
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305 | return 0; |
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306 | |||
307 | drm_property_unreference_blob(state->mode_blob); |
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308 | state->mode_blob = NULL; |
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309 | |||
310 | if (mode) { |
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311 | drm_mode_convert_to_umode(&umode, mode); |
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312 | state->mode_blob = |
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313 | drm_property_create_blob(state->crtc->dev, |
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314 | sizeof(umode), |
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315 | &umode); |
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316 | if (IS_ERR(state->mode_blob)) |
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317 | return PTR_ERR(state->mode_blob); |
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318 | |||
319 | drm_mode_copy(&state->mode, mode); |
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320 | state->enable = true; |
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321 | DRM_DEBUG_ATOMIC("Set [MODE:%s] for CRTC state %p\n", |
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322 | mode->name, state); |
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323 | } else { |
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324 | memset(&state->mode, 0, sizeof(state->mode)); |
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325 | state->enable = false; |
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326 | DRM_DEBUG_ATOMIC("Set [NOMODE] for CRTC state %p\n", |
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327 | state); |
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328 | } |
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329 | |||
330 | return 0; |
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331 | } |
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332 | EXPORT_SYMBOL(drm_atomic_set_mode_for_crtc); |
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333 | |||
334 | /** |
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335 | * drm_atomic_set_mode_prop_for_crtc - set mode for CRTC |
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336 | * @state: the CRTC whose incoming state to update |
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337 | * @blob: pointer to blob property to use for mode |
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338 | * |
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339 | * Set a mode (originating from a blob property) on the desired CRTC state. |
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340 | * This function will take a reference on the blob property for the CRTC state, |
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341 | * and release the reference held on the state's existing mode property, if any |
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342 | * was set. |
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343 | * |
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344 | * RETURNS: |
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345 | * Zero on success, error code on failure. Cannot return -EDEADLK. |
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346 | */ |
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347 | int drm_atomic_set_mode_prop_for_crtc(struct drm_crtc_state *state, |
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348 | struct drm_property_blob *blob) |
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349 | { |
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350 | if (blob == state->mode_blob) |
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351 | return 0; |
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352 | |||
353 | drm_property_unreference_blob(state->mode_blob); |
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354 | state->mode_blob = NULL; |
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355 | |||
356 | if (blob) { |
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357 | if (blob->length != sizeof(struct drm_mode_modeinfo) || |
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358 | drm_mode_convert_umode(&state->mode, |
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359 | (const struct drm_mode_modeinfo *) |
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360 | blob->data)) |
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361 | return -EINVAL; |
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362 | |||
363 | state->mode_blob = drm_property_reference_blob(blob); |
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364 | state->enable = true; |
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365 | DRM_DEBUG_ATOMIC("Set [MODE:%s] for CRTC state %p\n", |
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366 | state->mode.name, state); |
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367 | } else { |
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6937 | serge | 368 | memset(&state->mode, 0, sizeof(state->mode)); |
6084 | serge | 369 | state->enable = false; |
370 | DRM_DEBUG_ATOMIC("Set [NOMODE] for CRTC state %p\n", |
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371 | state); |
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372 | } |
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373 | |||
374 | return 0; |
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375 | } |
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376 | EXPORT_SYMBOL(drm_atomic_set_mode_prop_for_crtc); |
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377 | |||
378 | /** |
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379 | * drm_atomic_crtc_set_property - set property on CRTC |
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380 | * @crtc: the drm CRTC to set a property on |
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381 | * @state: the state object to update with the new property value |
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382 | * @property: the property to set |
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383 | * @val: the new property value |
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384 | * |
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385 | * Use this instead of calling crtc->atomic_set_property directly. |
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386 | * This function handles generic/core properties and calls out to |
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387 | * driver's ->atomic_set_property() for driver properties. To ensure |
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388 | * consistent behavior you must call this function rather than the |
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389 | * driver hook directly. |
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390 | * |
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391 | * RETURNS: |
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392 | * Zero on success, error code on failure |
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393 | */ |
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394 | int drm_atomic_crtc_set_property(struct drm_crtc *crtc, |
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395 | struct drm_crtc_state *state, struct drm_property *property, |
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396 | uint64_t val) |
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397 | { |
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398 | struct drm_device *dev = crtc->dev; |
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399 | struct drm_mode_config *config = &dev->mode_config; |
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400 | int ret; |
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401 | |||
402 | if (property == config->prop_active) |
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403 | state->active = val; |
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404 | else if (property == config->prop_mode_id) { |
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405 | struct drm_property_blob *mode = |
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406 | drm_property_lookup_blob(dev, val); |
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407 | ret = drm_atomic_set_mode_prop_for_crtc(state, mode); |
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408 | drm_property_unreference_blob(mode); |
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409 | return ret; |
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410 | } |
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411 | else if (crtc->funcs->atomic_set_property) |
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412 | return crtc->funcs->atomic_set_property(crtc, state, property, val); |
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413 | else |
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414 | return -EINVAL; |
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415 | |||
416 | return 0; |
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417 | } |
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418 | EXPORT_SYMBOL(drm_atomic_crtc_set_property); |
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419 | |||
6937 | serge | 420 | /** |
421 | * drm_atomic_crtc_get_property - get property value from CRTC state |
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422 | * @crtc: the drm CRTC to set a property on |
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423 | * @state: the state object to get the property value from |
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424 | * @property: the property to set |
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425 | * @val: return location for the property value |
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426 | * |
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6084 | serge | 427 | * This function handles generic/core properties and calls out to |
428 | * driver's ->atomic_get_property() for driver properties. To ensure |
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429 | * consistent behavior you must call this function rather than the |
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430 | * driver hook directly. |
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6937 | serge | 431 | * |
432 | * RETURNS: |
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433 | * Zero on success, error code on failure |
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6084 | serge | 434 | */ |
435 | static int |
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436 | drm_atomic_crtc_get_property(struct drm_crtc *crtc, |
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437 | const struct drm_crtc_state *state, |
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438 | struct drm_property *property, uint64_t *val) |
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439 | { |
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440 | struct drm_device *dev = crtc->dev; |
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441 | struct drm_mode_config *config = &dev->mode_config; |
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442 | |||
443 | if (property == config->prop_active) |
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444 | *val = state->active; |
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445 | else if (property == config->prop_mode_id) |
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446 | *val = (state->mode_blob) ? state->mode_blob->base.id : 0; |
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447 | else if (crtc->funcs->atomic_get_property) |
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448 | return crtc->funcs->atomic_get_property(crtc, state, property, val); |
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449 | else |
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450 | return -EINVAL; |
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451 | |||
452 | return 0; |
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453 | } |
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454 | |||
455 | /** |
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456 | * drm_atomic_crtc_check - check crtc state |
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457 | * @crtc: crtc to check |
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458 | * @state: crtc state to check |
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459 | * |
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460 | * Provides core sanity checks for crtc state. |
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461 | * |
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462 | * RETURNS: |
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463 | * Zero on success, error code on failure |
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464 | */ |
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465 | static int drm_atomic_crtc_check(struct drm_crtc *crtc, |
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466 | struct drm_crtc_state *state) |
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467 | { |
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468 | /* NOTE: we explicitly don't enforce constraints such as primary |
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469 | * layer covering entire screen, since that is something we want |
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470 | * to allow (on hw that supports it). For hw that does not, it |
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471 | * should be checked in driver's crtc->atomic_check() vfunc. |
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472 | * |
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473 | * TODO: Add generic modeset state checks once we support those. |
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474 | */ |
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475 | |||
476 | if (state->active && !state->enable) { |
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6937 | serge | 477 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] active without enabled\n", |
478 | crtc->base.id, crtc->name); |
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6084 | serge | 479 | return -EINVAL; |
480 | } |
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481 | |||
482 | /* The state->enable vs. state->mode_blob checks can be WARN_ON, |
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483 | * as this is a kernel-internal detail that userspace should never |
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484 | * be able to trigger. */ |
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485 | if (drm_core_check_feature(crtc->dev, DRIVER_ATOMIC) && |
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486 | WARN_ON(state->enable && !state->mode_blob)) { |
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6937 | serge | 487 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] enabled without mode blob\n", |
488 | crtc->base.id, crtc->name); |
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6084 | serge | 489 | return -EINVAL; |
490 | } |
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491 | |||
492 | if (drm_core_check_feature(crtc->dev, DRIVER_ATOMIC) && |
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493 | WARN_ON(!state->enable && state->mode_blob)) { |
||
6937 | serge | 494 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] disabled with mode blob\n", |
495 | crtc->base.id, crtc->name); |
||
496 | return -EINVAL; |
||
497 | } |
||
498 | |||
499 | /* |
||
500 | * Reject event generation for when a CRTC is off and stays off. |
||
501 | * It wouldn't be hard to implement this, but userspace has a track |
||
502 | * record of happily burning through 100% cpu (or worse, crash) when the |
||
503 | * display pipe is suspended. To avoid all that fun just reject updates |
||
504 | * that ask for events since likely that indicates a bug in the |
||
505 | * compositor's drawing loop. This is consistent with the vblank IOCTL |
||
506 | * and legacy page_flip IOCTL which also reject service on a disabled |
||
507 | * pipe. |
||
508 | */ |
||
509 | if (state->event && !state->active && !crtc->state->active) { |
||
510 | DRM_DEBUG_ATOMIC("[CRTC:%d] requesting event but off\n", |
||
6084 | serge | 511 | crtc->base.id); |
512 | return -EINVAL; |
||
513 | } |
||
514 | |||
515 | return 0; |
||
516 | } |
||
517 | |||
518 | /** |
||
5271 | serge | 519 | * drm_atomic_get_plane_state - get plane state |
520 | * @state: global atomic state object |
||
521 | * @plane: plane to get state object for |
||
522 | * |
||
523 | * This function returns the plane state for the given plane, allocating it if |
||
524 | * needed. It will also grab the relevant plane lock to make sure that the state |
||
525 | * is consistent. |
||
526 | * |
||
527 | * Returns: |
||
528 | * |
||
529 | * Either the allocated state or the error code encoded into the pointer. When |
||
530 | * the error is EDEADLK then the w/w mutex code has detected a deadlock and the |
||
531 | * entire atomic sequence must be restarted. All other errors are fatal. |
||
532 | */ |
||
533 | struct drm_plane_state * |
||
534 | drm_atomic_get_plane_state(struct drm_atomic_state *state, |
||
535 | struct drm_plane *plane) |
||
536 | { |
||
6084 | serge | 537 | int ret, index = drm_plane_index(plane); |
5271 | serge | 538 | struct drm_plane_state *plane_state; |
539 | |||
6084 | serge | 540 | plane_state = drm_atomic_get_existing_plane_state(state, plane); |
541 | if (plane_state) |
||
542 | return plane_state; |
||
5271 | serge | 543 | |
544 | ret = drm_modeset_lock(&plane->mutex, state->acquire_ctx); |
||
545 | if (ret) |
||
546 | return ERR_PTR(ret); |
||
547 | |||
548 | plane_state = plane->funcs->atomic_duplicate_state(plane); |
||
549 | if (!plane_state) |
||
550 | return ERR_PTR(-ENOMEM); |
||
551 | |||
552 | state->plane_states[index] = plane_state; |
||
553 | state->planes[index] = plane; |
||
554 | plane_state->state = state; |
||
555 | |||
6937 | serge | 556 | DRM_DEBUG_ATOMIC("Added [PLANE:%d:%s] %p state to %p\n", |
557 | plane->base.id, plane->name, plane_state, state); |
||
5271 | serge | 558 | |
559 | if (plane_state->crtc) { |
||
560 | struct drm_crtc_state *crtc_state; |
||
561 | |||
562 | crtc_state = drm_atomic_get_crtc_state(state, |
||
563 | plane_state->crtc); |
||
564 | if (IS_ERR(crtc_state)) |
||
565 | return ERR_CAST(crtc_state); |
||
566 | } |
||
567 | |||
568 | return plane_state; |
||
569 | } |
||
570 | EXPORT_SYMBOL(drm_atomic_get_plane_state); |
||
571 | |||
572 | /** |
||
6084 | serge | 573 | * drm_atomic_plane_set_property - set property on plane |
574 | * @plane: the drm plane to set a property on |
||
575 | * @state: the state object to update with the new property value |
||
576 | * @property: the property to set |
||
577 | * @val: the new property value |
||
578 | * |
||
579 | * Use this instead of calling plane->atomic_set_property directly. |
||
580 | * This function handles generic/core properties and calls out to |
||
581 | * driver's ->atomic_set_property() for driver properties. To ensure |
||
582 | * consistent behavior you must call this function rather than the |
||
583 | * driver hook directly. |
||
584 | * |
||
585 | * RETURNS: |
||
586 | * Zero on success, error code on failure |
||
587 | */ |
||
588 | int drm_atomic_plane_set_property(struct drm_plane *plane, |
||
589 | struct drm_plane_state *state, struct drm_property *property, |
||
590 | uint64_t val) |
||
591 | { |
||
592 | struct drm_device *dev = plane->dev; |
||
593 | struct drm_mode_config *config = &dev->mode_config; |
||
594 | |||
595 | if (property == config->prop_fb_id) { |
||
596 | struct drm_framebuffer *fb = drm_framebuffer_lookup(dev, val); |
||
597 | drm_atomic_set_fb_for_plane(state, fb); |
||
598 | if (fb) |
||
599 | drm_framebuffer_unreference(fb); |
||
600 | } else if (property == config->prop_crtc_id) { |
||
601 | struct drm_crtc *crtc = drm_crtc_find(dev, val); |
||
602 | return drm_atomic_set_crtc_for_plane(state, crtc); |
||
603 | } else if (property == config->prop_crtc_x) { |
||
604 | state->crtc_x = U642I64(val); |
||
605 | } else if (property == config->prop_crtc_y) { |
||
606 | state->crtc_y = U642I64(val); |
||
607 | } else if (property == config->prop_crtc_w) { |
||
608 | state->crtc_w = val; |
||
609 | } else if (property == config->prop_crtc_h) { |
||
610 | state->crtc_h = val; |
||
611 | } else if (property == config->prop_src_x) { |
||
612 | state->src_x = val; |
||
613 | } else if (property == config->prop_src_y) { |
||
614 | state->src_y = val; |
||
615 | } else if (property == config->prop_src_w) { |
||
616 | state->src_w = val; |
||
617 | } else if (property == config->prop_src_h) { |
||
618 | state->src_h = val; |
||
619 | } else if (property == config->rotation_property) { |
||
620 | state->rotation = val; |
||
621 | } else if (plane->funcs->atomic_set_property) { |
||
622 | return plane->funcs->atomic_set_property(plane, state, |
||
623 | property, val); |
||
624 | } else { |
||
625 | return -EINVAL; |
||
626 | } |
||
627 | |||
628 | return 0; |
||
629 | } |
||
630 | EXPORT_SYMBOL(drm_atomic_plane_set_property); |
||
631 | |||
6937 | serge | 632 | /** |
633 | * drm_atomic_plane_get_property - get property value from plane state |
||
634 | * @plane: the drm plane to set a property on |
||
635 | * @state: the state object to get the property value from |
||
636 | * @property: the property to set |
||
637 | * @val: return location for the property value |
||
638 | * |
||
6084 | serge | 639 | * This function handles generic/core properties and calls out to |
640 | * driver's ->atomic_get_property() for driver properties. To ensure |
||
641 | * consistent behavior you must call this function rather than the |
||
642 | * driver hook directly. |
||
6937 | serge | 643 | * |
644 | * RETURNS: |
||
645 | * Zero on success, error code on failure |
||
6084 | serge | 646 | */ |
647 | static int |
||
648 | drm_atomic_plane_get_property(struct drm_plane *plane, |
||
649 | const struct drm_plane_state *state, |
||
650 | struct drm_property *property, uint64_t *val) |
||
651 | { |
||
652 | struct drm_device *dev = plane->dev; |
||
653 | struct drm_mode_config *config = &dev->mode_config; |
||
654 | |||
655 | if (property == config->prop_fb_id) { |
||
656 | *val = (state->fb) ? state->fb->base.id : 0; |
||
657 | } else if (property == config->prop_crtc_id) { |
||
658 | *val = (state->crtc) ? state->crtc->base.id : 0; |
||
659 | } else if (property == config->prop_crtc_x) { |
||
660 | *val = I642U64(state->crtc_x); |
||
661 | } else if (property == config->prop_crtc_y) { |
||
662 | *val = I642U64(state->crtc_y); |
||
663 | } else if (property == config->prop_crtc_w) { |
||
664 | *val = state->crtc_w; |
||
665 | } else if (property == config->prop_crtc_h) { |
||
666 | *val = state->crtc_h; |
||
667 | } else if (property == config->prop_src_x) { |
||
668 | *val = state->src_x; |
||
669 | } else if (property == config->prop_src_y) { |
||
670 | *val = state->src_y; |
||
671 | } else if (property == config->prop_src_w) { |
||
672 | *val = state->src_w; |
||
673 | } else if (property == config->prop_src_h) { |
||
674 | *val = state->src_h; |
||
675 | } else if (property == config->rotation_property) { |
||
676 | *val = state->rotation; |
||
677 | } else if (plane->funcs->atomic_get_property) { |
||
678 | return plane->funcs->atomic_get_property(plane, state, property, val); |
||
679 | } else { |
||
680 | return -EINVAL; |
||
681 | } |
||
682 | |||
683 | return 0; |
||
684 | } |
||
685 | |||
686 | static bool |
||
687 | plane_switching_crtc(struct drm_atomic_state *state, |
||
688 | struct drm_plane *plane, |
||
689 | struct drm_plane_state *plane_state) |
||
690 | { |
||
691 | if (!plane->state->crtc || !plane_state->crtc) |
||
692 | return false; |
||
693 | |||
694 | if (plane->state->crtc == plane_state->crtc) |
||
695 | return false; |
||
696 | |||
697 | /* This could be refined, but currently there's no helper or driver code |
||
698 | * to implement direct switching of active planes nor userspace to take |
||
699 | * advantage of more direct plane switching without the intermediate |
||
700 | * full OFF state. |
||
701 | */ |
||
702 | return true; |
||
703 | } |
||
704 | |||
705 | /** |
||
706 | * drm_atomic_plane_check - check plane state |
||
707 | * @plane: plane to check |
||
708 | * @state: plane state to check |
||
709 | * |
||
710 | * Provides core sanity checks for plane state. |
||
711 | * |
||
712 | * RETURNS: |
||
713 | * Zero on success, error code on failure |
||
714 | */ |
||
715 | static int drm_atomic_plane_check(struct drm_plane *plane, |
||
716 | struct drm_plane_state *state) |
||
717 | { |
||
718 | unsigned int fb_width, fb_height; |
||
719 | int ret; |
||
720 | |||
721 | /* either *both* CRTC and FB must be set, or neither */ |
||
722 | if (WARN_ON(state->crtc && !state->fb)) { |
||
723 | DRM_DEBUG_ATOMIC("CRTC set but no FB\n"); |
||
724 | return -EINVAL; |
||
725 | } else if (WARN_ON(state->fb && !state->crtc)) { |
||
726 | DRM_DEBUG_ATOMIC("FB set but no CRTC\n"); |
||
727 | return -EINVAL; |
||
728 | } |
||
729 | |||
730 | /* if disabled, we don't care about the rest of the state: */ |
||
731 | if (!state->crtc) |
||
732 | return 0; |
||
733 | |||
734 | /* Check whether this plane is usable on this CRTC */ |
||
735 | if (!(plane->possible_crtcs & drm_crtc_mask(state->crtc))) { |
||
736 | DRM_DEBUG_ATOMIC("Invalid crtc for plane\n"); |
||
737 | return -EINVAL; |
||
738 | } |
||
739 | |||
740 | /* Check whether this plane supports the fb pixel format. */ |
||
741 | ret = drm_plane_check_pixel_format(plane, state->fb->pixel_format); |
||
742 | if (ret) { |
||
743 | DRM_DEBUG_ATOMIC("Invalid pixel format %s\n", |
||
744 | drm_get_format_name(state->fb->pixel_format)); |
||
745 | return ret; |
||
746 | } |
||
747 | |||
748 | /* Give drivers some help against integer overflows */ |
||
749 | if (state->crtc_w > INT_MAX || |
||
750 | state->crtc_x > INT_MAX - (int32_t) state->crtc_w || |
||
751 | state->crtc_h > INT_MAX || |
||
752 | state->crtc_y > INT_MAX - (int32_t) state->crtc_h) { |
||
753 | DRM_DEBUG_ATOMIC("Invalid CRTC coordinates %ux%u+%d+%d\n", |
||
754 | state->crtc_w, state->crtc_h, |
||
755 | state->crtc_x, state->crtc_y); |
||
756 | return -ERANGE; |
||
757 | } |
||
758 | |||
759 | fb_width = state->fb->width << 16; |
||
760 | fb_height = state->fb->height << 16; |
||
761 | |||
762 | /* Make sure source coordinates are inside the fb. */ |
||
763 | if (state->src_w > fb_width || |
||
764 | state->src_x > fb_width - state->src_w || |
||
765 | state->src_h > fb_height || |
||
766 | state->src_y > fb_height - state->src_h) { |
||
767 | DRM_DEBUG_ATOMIC("Invalid source coordinates " |
||
768 | "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n", |
||
769 | state->src_w >> 16, ((state->src_w & 0xffff) * 15625) >> 10, |
||
770 | state->src_h >> 16, ((state->src_h & 0xffff) * 15625) >> 10, |
||
771 | state->src_x >> 16, ((state->src_x & 0xffff) * 15625) >> 10, |
||
772 | state->src_y >> 16, ((state->src_y & 0xffff) * 15625) >> 10); |
||
773 | return -ENOSPC; |
||
774 | } |
||
775 | |||
776 | if (plane_switching_crtc(state->state, plane, state)) { |
||
6937 | serge | 777 | DRM_DEBUG_ATOMIC("[PLANE:%d:%s] switching CRTC directly\n", |
778 | plane->base.id, plane->name); |
||
6084 | serge | 779 | return -EINVAL; |
780 | } |
||
781 | |||
782 | return 0; |
||
783 | } |
||
784 | |||
785 | /** |
||
5271 | serge | 786 | * drm_atomic_get_connector_state - get connector state |
787 | * @state: global atomic state object |
||
788 | * @connector: connector to get state object for |
||
789 | * |
||
790 | * This function returns the connector state for the given connector, |
||
791 | * allocating it if needed. It will also grab the relevant connector lock to |
||
792 | * make sure that the state is consistent. |
||
793 | * |
||
794 | * Returns: |
||
795 | * |
||
796 | * Either the allocated state or the error code encoded into the pointer. When |
||
797 | * the error is EDEADLK then the w/w mutex code has detected a deadlock and the |
||
798 | * entire atomic sequence must be restarted. All other errors are fatal. |
||
799 | */ |
||
800 | struct drm_connector_state * |
||
801 | drm_atomic_get_connector_state(struct drm_atomic_state *state, |
||
802 | struct drm_connector *connector) |
||
803 | { |
||
804 | int ret, index; |
||
805 | struct drm_mode_config *config = &connector->dev->mode_config; |
||
806 | struct drm_connector_state *connector_state; |
||
807 | |||
808 | ret = drm_modeset_lock(&config->connection_mutex, state->acquire_ctx); |
||
809 | if (ret) |
||
810 | return ERR_PTR(ret); |
||
811 | |||
812 | index = drm_connector_index(connector); |
||
813 | |||
814 | if (index >= state->num_connector) { |
||
6937 | serge | 815 | struct drm_connector **c; |
816 | struct drm_connector_state **cs; |
||
817 | int alloc = max(index + 1, config->num_connector); |
||
818 | |||
819 | c = krealloc(state->connectors, alloc * sizeof(*state->connectors), GFP_KERNEL); |
||
820 | if (!c) |
||
821 | return ERR_PTR(-ENOMEM); |
||
822 | |||
823 | state->connectors = c; |
||
824 | memset(&state->connectors[state->num_connector], 0, |
||
825 | sizeof(*state->connectors) * (alloc - state->num_connector)); |
||
826 | |||
827 | cs = krealloc(state->connector_states, alloc * sizeof(*state->connector_states), GFP_KERNEL); |
||
828 | if (!cs) |
||
829 | return ERR_PTR(-ENOMEM); |
||
830 | |||
831 | state->connector_states = cs; |
||
832 | memset(&state->connector_states[state->num_connector], 0, |
||
833 | sizeof(*state->connector_states) * (alloc - state->num_connector)); |
||
834 | state->num_connector = alloc; |
||
5271 | serge | 835 | } |
836 | |||
837 | if (state->connector_states[index]) |
||
838 | return state->connector_states[index]; |
||
839 | |||
840 | connector_state = connector->funcs->atomic_duplicate_state(connector); |
||
841 | if (!connector_state) |
||
842 | return ERR_PTR(-ENOMEM); |
||
843 | |||
844 | state->connector_states[index] = connector_state; |
||
845 | state->connectors[index] = connector; |
||
846 | connector_state->state = state; |
||
847 | |||
6084 | serge | 848 | DRM_DEBUG_ATOMIC("Added [CONNECTOR:%d] %p state to %p\n", |
849 | connector->base.id, connector_state, state); |
||
5271 | serge | 850 | |
851 | if (connector_state->crtc) { |
||
852 | struct drm_crtc_state *crtc_state; |
||
853 | |||
854 | crtc_state = drm_atomic_get_crtc_state(state, |
||
855 | connector_state->crtc); |
||
856 | if (IS_ERR(crtc_state)) |
||
857 | return ERR_CAST(crtc_state); |
||
858 | } |
||
859 | |||
860 | return connector_state; |
||
861 | } |
||
862 | EXPORT_SYMBOL(drm_atomic_get_connector_state); |
||
863 | |||
864 | /** |
||
6084 | serge | 865 | * drm_atomic_connector_set_property - set property on connector. |
866 | * @connector: the drm connector to set a property on |
||
867 | * @state: the state object to update with the new property value |
||
868 | * @property: the property to set |
||
869 | * @val: the new property value |
||
870 | * |
||
871 | * Use this instead of calling connector->atomic_set_property directly. |
||
872 | * This function handles generic/core properties and calls out to |
||
873 | * driver's ->atomic_set_property() for driver properties. To ensure |
||
874 | * consistent behavior you must call this function rather than the |
||
875 | * driver hook directly. |
||
876 | * |
||
877 | * RETURNS: |
||
878 | * Zero on success, error code on failure |
||
879 | */ |
||
880 | int drm_atomic_connector_set_property(struct drm_connector *connector, |
||
881 | struct drm_connector_state *state, struct drm_property *property, |
||
882 | uint64_t val) |
||
883 | { |
||
884 | struct drm_device *dev = connector->dev; |
||
885 | struct drm_mode_config *config = &dev->mode_config; |
||
886 | |||
887 | if (property == config->prop_crtc_id) { |
||
888 | struct drm_crtc *crtc = drm_crtc_find(dev, val); |
||
889 | return drm_atomic_set_crtc_for_connector(state, crtc); |
||
890 | } else if (property == config->dpms_property) { |
||
891 | /* setting DPMS property requires special handling, which |
||
892 | * is done in legacy setprop path for us. Disallow (for |
||
893 | * now?) atomic writes to DPMS property: |
||
894 | */ |
||
895 | return -EINVAL; |
||
896 | } else if (connector->funcs->atomic_set_property) { |
||
897 | return connector->funcs->atomic_set_property(connector, |
||
898 | state, property, val); |
||
899 | } else { |
||
900 | return -EINVAL; |
||
901 | } |
||
902 | } |
||
903 | EXPORT_SYMBOL(drm_atomic_connector_set_property); |
||
904 | |||
6937 | serge | 905 | /** |
906 | * drm_atomic_connector_get_property - get property value from connector state |
||
907 | * @connector: the drm connector to set a property on |
||
908 | * @state: the state object to get the property value from |
||
909 | * @property: the property to set |
||
910 | * @val: return location for the property value |
||
911 | * |
||
6084 | serge | 912 | * This function handles generic/core properties and calls out to |
913 | * driver's ->atomic_get_property() for driver properties. To ensure |
||
914 | * consistent behavior you must call this function rather than the |
||
915 | * driver hook directly. |
||
6937 | serge | 916 | * |
917 | * RETURNS: |
||
918 | * Zero on success, error code on failure |
||
6084 | serge | 919 | */ |
920 | static int |
||
921 | drm_atomic_connector_get_property(struct drm_connector *connector, |
||
922 | const struct drm_connector_state *state, |
||
923 | struct drm_property *property, uint64_t *val) |
||
924 | { |
||
925 | struct drm_device *dev = connector->dev; |
||
926 | struct drm_mode_config *config = &dev->mode_config; |
||
927 | |||
928 | if (property == config->prop_crtc_id) { |
||
929 | *val = (state->crtc) ? state->crtc->base.id : 0; |
||
930 | } else if (property == config->dpms_property) { |
||
931 | *val = connector->dpms; |
||
932 | } else if (connector->funcs->atomic_get_property) { |
||
933 | return connector->funcs->atomic_get_property(connector, |
||
934 | state, property, val); |
||
935 | } else { |
||
936 | return -EINVAL; |
||
937 | } |
||
938 | |||
939 | return 0; |
||
940 | } |
||
941 | |||
942 | int drm_atomic_get_property(struct drm_mode_object *obj, |
||
943 | struct drm_property *property, uint64_t *val) |
||
944 | { |
||
945 | struct drm_device *dev = property->dev; |
||
946 | int ret; |
||
947 | |||
948 | switch (obj->type) { |
||
949 | case DRM_MODE_OBJECT_CONNECTOR: { |
||
950 | struct drm_connector *connector = obj_to_connector(obj); |
||
951 | WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex)); |
||
952 | ret = drm_atomic_connector_get_property(connector, |
||
953 | connector->state, property, val); |
||
954 | break; |
||
955 | } |
||
956 | case DRM_MODE_OBJECT_CRTC: { |
||
957 | struct drm_crtc *crtc = obj_to_crtc(obj); |
||
958 | WARN_ON(!drm_modeset_is_locked(&crtc->mutex)); |
||
959 | ret = drm_atomic_crtc_get_property(crtc, |
||
960 | crtc->state, property, val); |
||
961 | break; |
||
962 | } |
||
963 | case DRM_MODE_OBJECT_PLANE: { |
||
964 | struct drm_plane *plane = obj_to_plane(obj); |
||
965 | WARN_ON(!drm_modeset_is_locked(&plane->mutex)); |
||
966 | ret = drm_atomic_plane_get_property(plane, |
||
967 | plane->state, property, val); |
||
968 | break; |
||
969 | } |
||
970 | default: |
||
971 | ret = -EINVAL; |
||
972 | break; |
||
973 | } |
||
974 | |||
975 | return ret; |
||
976 | } |
||
977 | |||
978 | /** |
||
5271 | serge | 979 | * drm_atomic_set_crtc_for_plane - set crtc for plane |
6084 | serge | 980 | * @plane_state: the plane whose incoming state to update |
5271 | serge | 981 | * @crtc: crtc to use for the plane |
982 | * |
||
983 | * Changing the assigned crtc for a plane requires us to grab the lock and state |
||
984 | * for the new crtc, as needed. This function takes care of all these details |
||
985 | * besides updating the pointer in the state object itself. |
||
986 | * |
||
987 | * Returns: |
||
988 | * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK |
||
989 | * then the w/w mutex code has detected a deadlock and the entire atomic |
||
990 | * sequence must be restarted. All other errors are fatal. |
||
991 | */ |
||
992 | int |
||
6084 | serge | 993 | drm_atomic_set_crtc_for_plane(struct drm_plane_state *plane_state, |
994 | struct drm_crtc *crtc) |
||
5271 | serge | 995 | { |
6084 | serge | 996 | struct drm_plane *plane = plane_state->plane; |
5271 | serge | 997 | struct drm_crtc_state *crtc_state; |
998 | |||
999 | if (plane_state->crtc) { |
||
1000 | crtc_state = drm_atomic_get_crtc_state(plane_state->state, |
||
1001 | plane_state->crtc); |
||
1002 | if (WARN_ON(IS_ERR(crtc_state))) |
||
1003 | return PTR_ERR(crtc_state); |
||
1004 | |||
1005 | crtc_state->plane_mask &= ~(1 << drm_plane_index(plane)); |
||
1006 | } |
||
1007 | |||
1008 | plane_state->crtc = crtc; |
||
1009 | |||
1010 | if (crtc) { |
||
1011 | crtc_state = drm_atomic_get_crtc_state(plane_state->state, |
||
1012 | crtc); |
||
1013 | if (IS_ERR(crtc_state)) |
||
1014 | return PTR_ERR(crtc_state); |
||
1015 | crtc_state->plane_mask |= (1 << drm_plane_index(plane)); |
||
1016 | } |
||
1017 | |||
1018 | if (crtc) |
||
6937 | serge | 1019 | DRM_DEBUG_ATOMIC("Link plane state %p to [CRTC:%d:%s]\n", |
1020 | plane_state, crtc->base.id, crtc->name); |
||
5271 | serge | 1021 | else |
6084 | serge | 1022 | DRM_DEBUG_ATOMIC("Link plane state %p to [NOCRTC]\n", |
1023 | plane_state); |
||
5271 | serge | 1024 | |
1025 | return 0; |
||
1026 | } |
||
1027 | EXPORT_SYMBOL(drm_atomic_set_crtc_for_plane); |
||
1028 | |||
1029 | /** |
||
6084 | serge | 1030 | * drm_atomic_set_fb_for_plane - set framebuffer for plane |
5271 | serge | 1031 | * @plane_state: atomic state object for the plane |
1032 | * @fb: fb to use for the plane |
||
1033 | * |
||
1034 | * Changing the assigned framebuffer for a plane requires us to grab a reference |
||
1035 | * to the new fb and drop the reference to the old fb, if there is one. This |
||
1036 | * function takes care of all these details besides updating the pointer in the |
||
1037 | * state object itself. |
||
1038 | */ |
||
1039 | void |
||
1040 | drm_atomic_set_fb_for_plane(struct drm_plane_state *plane_state, |
||
1041 | struct drm_framebuffer *fb) |
||
1042 | { |
||
1043 | if (plane_state->fb) |
||
1044 | drm_framebuffer_unreference(plane_state->fb); |
||
1045 | if (fb) |
||
1046 | drm_framebuffer_reference(fb); |
||
1047 | plane_state->fb = fb; |
||
1048 | |||
1049 | if (fb) |
||
6084 | serge | 1050 | DRM_DEBUG_ATOMIC("Set [FB:%d] for plane state %p\n", |
1051 | fb->base.id, plane_state); |
||
5271 | serge | 1052 | else |
6084 | serge | 1053 | DRM_DEBUG_ATOMIC("Set [NOFB] for plane state %p\n", |
1054 | plane_state); |
||
5271 | serge | 1055 | } |
1056 | EXPORT_SYMBOL(drm_atomic_set_fb_for_plane); |
||
1057 | |||
1058 | /** |
||
1059 | * drm_atomic_set_crtc_for_connector - set crtc for connector |
||
1060 | * @conn_state: atomic state object for the connector |
||
1061 | * @crtc: crtc to use for the connector |
||
1062 | * |
||
1063 | * Changing the assigned crtc for a connector requires us to grab the lock and |
||
1064 | * state for the new crtc, as needed. This function takes care of all these |
||
1065 | * details besides updating the pointer in the state object itself. |
||
1066 | * |
||
1067 | * Returns: |
||
1068 | * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK |
||
1069 | * then the w/w mutex code has detected a deadlock and the entire atomic |
||
1070 | * sequence must be restarted. All other errors are fatal. |
||
1071 | */ |
||
1072 | int |
||
1073 | drm_atomic_set_crtc_for_connector(struct drm_connector_state *conn_state, |
||
1074 | struct drm_crtc *crtc) |
||
1075 | { |
||
1076 | struct drm_crtc_state *crtc_state; |
||
1077 | |||
6937 | serge | 1078 | if (conn_state->crtc && conn_state->crtc != crtc) { |
1079 | crtc_state = drm_atomic_get_existing_crtc_state(conn_state->state, |
||
1080 | conn_state->crtc); |
||
1081 | |||
1082 | crtc_state->connector_mask &= |
||
1083 | ~(1 << drm_connector_index(conn_state->connector)); |
||
1084 | } |
||
1085 | |||
5271 | serge | 1086 | if (crtc) { |
1087 | crtc_state = drm_atomic_get_crtc_state(conn_state->state, crtc); |
||
1088 | if (IS_ERR(crtc_state)) |
||
1089 | return PTR_ERR(crtc_state); |
||
6937 | serge | 1090 | |
1091 | crtc_state->connector_mask |= |
||
1092 | 1 << drm_connector_index(conn_state->connector); |
||
5271 | serge | 1093 | } |
1094 | |||
1095 | conn_state->crtc = crtc; |
||
1096 | |||
1097 | if (crtc) |
||
6937 | serge | 1098 | DRM_DEBUG_ATOMIC("Link connector state %p to [CRTC:%d:%s]\n", |
1099 | conn_state, crtc->base.id, crtc->name); |
||
5271 | serge | 1100 | else |
6084 | serge | 1101 | DRM_DEBUG_ATOMIC("Link connector state %p to [NOCRTC]\n", |
1102 | conn_state); |
||
5271 | serge | 1103 | |
1104 | return 0; |
||
1105 | } |
||
1106 | EXPORT_SYMBOL(drm_atomic_set_crtc_for_connector); |
||
1107 | |||
1108 | /** |
||
1109 | * drm_atomic_add_affected_connectors - add connectors for crtc |
||
1110 | * @state: atomic state |
||
1111 | * @crtc: DRM crtc |
||
1112 | * |
||
1113 | * This function walks the current configuration and adds all connectors |
||
1114 | * currently using @crtc to the atomic configuration @state. Note that this |
||
1115 | * function must acquire the connection mutex. This can potentially cause |
||
1116 | * unneeded seralization if the update is just for the planes on one crtc. Hence |
||
1117 | * drivers and helpers should only call this when really needed (e.g. when a |
||
1118 | * full modeset needs to happen due to some change). |
||
1119 | * |
||
1120 | * Returns: |
||
1121 | * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK |
||
1122 | * then the w/w mutex code has detected a deadlock and the entire atomic |
||
1123 | * sequence must be restarted. All other errors are fatal. |
||
1124 | */ |
||
1125 | int |
||
1126 | drm_atomic_add_affected_connectors(struct drm_atomic_state *state, |
||
1127 | struct drm_crtc *crtc) |
||
1128 | { |
||
1129 | struct drm_mode_config *config = &state->dev->mode_config; |
||
1130 | struct drm_connector *connector; |
||
1131 | struct drm_connector_state *conn_state; |
||
1132 | int ret; |
||
1133 | |||
1134 | ret = drm_modeset_lock(&config->connection_mutex, state->acquire_ctx); |
||
1135 | if (ret) |
||
1136 | return ret; |
||
1137 | |||
6937 | serge | 1138 | DRM_DEBUG_ATOMIC("Adding all current connectors for [CRTC:%d:%s] to %p\n", |
1139 | crtc->base.id, crtc->name, state); |
||
5271 | serge | 1140 | |
1141 | /* |
||
1142 | * Changed connectors are already in @state, so only need to look at the |
||
1143 | * current configuration. |
||
1144 | */ |
||
6084 | serge | 1145 | drm_for_each_connector(connector, state->dev) { |
5271 | serge | 1146 | if (connector->state->crtc != crtc) |
1147 | continue; |
||
1148 | |||
1149 | conn_state = drm_atomic_get_connector_state(state, connector); |
||
1150 | if (IS_ERR(conn_state)) |
||
1151 | return PTR_ERR(conn_state); |
||
1152 | } |
||
1153 | |||
1154 | return 0; |
||
1155 | } |
||
1156 | EXPORT_SYMBOL(drm_atomic_add_affected_connectors); |
||
1157 | |||
1158 | /** |
||
6084 | serge | 1159 | * drm_atomic_add_affected_planes - add planes for crtc |
1160 | * @state: atomic state |
||
1161 | * @crtc: DRM crtc |
||
1162 | * |
||
1163 | * This function walks the current configuration and adds all planes |
||
1164 | * currently used by @crtc to the atomic configuration @state. This is useful |
||
1165 | * when an atomic commit also needs to check all currently enabled plane on |
||
1166 | * @crtc, e.g. when changing the mode. It's also useful when re-enabling a CRTC |
||
1167 | * to avoid special code to force-enable all planes. |
||
1168 | * |
||
1169 | * Since acquiring a plane state will always also acquire the w/w mutex of the |
||
1170 | * current CRTC for that plane (if there is any) adding all the plane states for |
||
1171 | * a CRTC will not reduce parallism of atomic updates. |
||
1172 | * |
||
1173 | * Returns: |
||
1174 | * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK |
||
1175 | * then the w/w mutex code has detected a deadlock and the entire atomic |
||
1176 | * sequence must be restarted. All other errors are fatal. |
||
1177 | */ |
||
1178 | int |
||
1179 | drm_atomic_add_affected_planes(struct drm_atomic_state *state, |
||
1180 | struct drm_crtc *crtc) |
||
1181 | { |
||
1182 | struct drm_plane *plane; |
||
1183 | |||
1184 | WARN_ON(!drm_atomic_get_existing_crtc_state(state, crtc)); |
||
1185 | |||
1186 | drm_for_each_plane_mask(plane, state->dev, crtc->state->plane_mask) { |
||
1187 | struct drm_plane_state *plane_state = |
||
1188 | drm_atomic_get_plane_state(state, plane); |
||
1189 | |||
1190 | if (IS_ERR(plane_state)) |
||
1191 | return PTR_ERR(plane_state); |
||
1192 | } |
||
1193 | return 0; |
||
1194 | } |
||
1195 | EXPORT_SYMBOL(drm_atomic_add_affected_planes); |
||
1196 | |||
1197 | /** |
||
5271 | serge | 1198 | * drm_atomic_legacy_backoff - locking backoff for legacy ioctls |
1199 | * @state: atomic state |
||
1200 | * |
||
1201 | * This function should be used by legacy entry points which don't understand |
||
1202 | * -EDEADLK semantics. For simplicity this one will grab all modeset locks after |
||
6084 | serge | 1203 | * the slowpath completed. |
5271 | serge | 1204 | */ |
1205 | void drm_atomic_legacy_backoff(struct drm_atomic_state *state) |
||
1206 | { |
||
1207 | int ret; |
||
1208 | |||
1209 | retry: |
||
1210 | drm_modeset_backoff(state->acquire_ctx); |
||
1211 | |||
6937 | serge | 1212 | ret = drm_modeset_lock_all_ctx(state->dev, state->acquire_ctx); |
5271 | serge | 1213 | if (ret) |
1214 | goto retry; |
||
1215 | } |
||
1216 | EXPORT_SYMBOL(drm_atomic_legacy_backoff); |
||
1217 | |||
1218 | /** |
||
1219 | * drm_atomic_check_only - check whether a given config would work |
||
1220 | * @state: atomic configuration to check |
||
1221 | * |
||
1222 | * Note that this function can return -EDEADLK if the driver needed to acquire |
||
1223 | * more locks but encountered a deadlock. The caller must then do the usual w/w |
||
1224 | * backoff dance and restart. All other errors are fatal. |
||
1225 | * |
||
1226 | * Returns: |
||
1227 | * 0 on success, negative error code on failure. |
||
1228 | */ |
||
1229 | int drm_atomic_check_only(struct drm_atomic_state *state) |
||
1230 | { |
||
6084 | serge | 1231 | struct drm_device *dev = state->dev; |
1232 | struct drm_mode_config *config = &dev->mode_config; |
||
1233 | struct drm_plane *plane; |
||
1234 | struct drm_plane_state *plane_state; |
||
1235 | struct drm_crtc *crtc; |
||
1236 | struct drm_crtc_state *crtc_state; |
||
1237 | int i, ret = 0; |
||
5271 | serge | 1238 | |
6084 | serge | 1239 | DRM_DEBUG_ATOMIC("checking %p\n", state); |
5271 | serge | 1240 | |
6084 | serge | 1241 | for_each_plane_in_state(state, plane, plane_state, i) { |
1242 | ret = drm_atomic_plane_check(plane, plane_state); |
||
1243 | if (ret) { |
||
6937 | serge | 1244 | DRM_DEBUG_ATOMIC("[PLANE:%d:%s] atomic core check failed\n", |
1245 | plane->base.id, plane->name); |
||
6084 | serge | 1246 | return ret; |
1247 | } |
||
1248 | } |
||
1249 | |||
1250 | for_each_crtc_in_state(state, crtc, crtc_state, i) { |
||
1251 | ret = drm_atomic_crtc_check(crtc, crtc_state); |
||
1252 | if (ret) { |
||
6937 | serge | 1253 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] atomic core check failed\n", |
1254 | crtc->base.id, crtc->name); |
||
6084 | serge | 1255 | return ret; |
1256 | } |
||
1257 | } |
||
1258 | |||
5271 | serge | 1259 | if (config->funcs->atomic_check) |
6084 | serge | 1260 | ret = config->funcs->atomic_check(state->dev, state); |
1261 | |||
1262 | if (!state->allow_modeset) { |
||
1263 | for_each_crtc_in_state(state, crtc, crtc_state, i) { |
||
1264 | if (drm_atomic_crtc_needs_modeset(crtc_state)) { |
||
6937 | serge | 1265 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] requires full modeset\n", |
1266 | crtc->base.id, crtc->name); |
||
6084 | serge | 1267 | return -EINVAL; |
1268 | } |
||
1269 | } |
||
1270 | } |
||
1271 | |||
1272 | return ret; |
||
5271 | serge | 1273 | } |
1274 | EXPORT_SYMBOL(drm_atomic_check_only); |
||
1275 | |||
1276 | /** |
||
1277 | * drm_atomic_commit - commit configuration atomically |
||
1278 | * @state: atomic configuration to check |
||
1279 | * |
||
1280 | * Note that this function can return -EDEADLK if the driver needed to acquire |
||
1281 | * more locks but encountered a deadlock. The caller must then do the usual w/w |
||
1282 | * backoff dance and restart. All other errors are fatal. |
||
1283 | * |
||
1284 | * Also note that on successful execution ownership of @state is transferred |
||
1285 | * from the caller of this function to the function itself. The caller must not |
||
1286 | * free or in any other way access @state. If the function fails then the caller |
||
1287 | * must clean up @state itself. |
||
1288 | * |
||
1289 | * Returns: |
||
1290 | * 0 on success, negative error code on failure. |
||
1291 | */ |
||
1292 | int drm_atomic_commit(struct drm_atomic_state *state) |
||
1293 | { |
||
1294 | struct drm_mode_config *config = &state->dev->mode_config; |
||
1295 | int ret; |
||
1296 | |||
1297 | ret = drm_atomic_check_only(state); |
||
1298 | if (ret) |
||
1299 | return ret; |
||
1300 | |||
6084 | serge | 1301 | DRM_DEBUG_ATOMIC("commiting %p\n", state); |
5271 | serge | 1302 | |
1303 | return config->funcs->atomic_commit(state->dev, state, false); |
||
1304 | } |
||
1305 | EXPORT_SYMBOL(drm_atomic_commit); |
||
1306 | |||
1307 | /** |
||
1308 | * drm_atomic_async_commit - atomic&async configuration commit |
||
1309 | * @state: atomic configuration to check |
||
1310 | * |
||
1311 | * Note that this function can return -EDEADLK if the driver needed to acquire |
||
1312 | * more locks but encountered a deadlock. The caller must then do the usual w/w |
||
1313 | * backoff dance and restart. All other errors are fatal. |
||
1314 | * |
||
1315 | * Also note that on successful execution ownership of @state is transferred |
||
1316 | * from the caller of this function to the function itself. The caller must not |
||
1317 | * free or in any other way access @state. If the function fails then the caller |
||
1318 | * must clean up @state itself. |
||
1319 | * |
||
1320 | * Returns: |
||
1321 | * 0 on success, negative error code on failure. |
||
1322 | */ |
||
1323 | int drm_atomic_async_commit(struct drm_atomic_state *state) |
||
1324 | { |
||
1325 | struct drm_mode_config *config = &state->dev->mode_config; |
||
1326 | int ret; |
||
1327 | |||
1328 | ret = drm_atomic_check_only(state); |
||
1329 | if (ret) |
||
1330 | return ret; |
||
1331 | |||
6084 | serge | 1332 | DRM_DEBUG_ATOMIC("commiting %p asynchronously\n", state); |
5271 | serge | 1333 | |
1334 | return config->funcs->atomic_commit(state->dev, state, true); |
||
1335 | } |
||
1336 | EXPORT_SYMBOL(drm_atomic_async_commit); |
||
1337 | |||
6084 | serge | 1338 | /* |
1339 | * The big monstor ioctl |
||
5271 | serge | 1340 | */ |
6084 | serge | 1341 | |
1342 | static struct drm_pending_vblank_event *create_vblank_event( |
||
1343 | struct drm_device *dev, struct drm_file *file_priv, uint64_t user_data) |
||
5271 | serge | 1344 | { |
6084 | serge | 1345 | struct drm_pending_vblank_event *e = NULL; |
1346 | unsigned long flags; |
||
5271 | serge | 1347 | |
6084 | serge | 1348 | spin_lock_irqsave(&dev->event_lock, flags); |
1349 | if (file_priv->event_space < sizeof e->event) { |
||
1350 | spin_unlock_irqrestore(&dev->event_lock, flags); |
||
1351 | goto out; |
||
1352 | } |
||
1353 | file_priv->event_space -= sizeof e->event; |
||
1354 | spin_unlock_irqrestore(&dev->event_lock, flags); |
||
5271 | serge | 1355 | |
6084 | serge | 1356 | e = kzalloc(sizeof *e, GFP_KERNEL); |
1357 | if (e == NULL) { |
||
1358 | spin_lock_irqsave(&dev->event_lock, flags); |
||
1359 | file_priv->event_space += sizeof e->event; |
||
1360 | spin_unlock_irqrestore(&dev->event_lock, flags); |
||
1361 | goto out; |
||
1362 | } |
||
5271 | serge | 1363 | |
6084 | serge | 1364 | e->event.base.type = DRM_EVENT_FLIP_COMPLETE; |
1365 | e->event.base.length = sizeof e->event; |
||
1366 | e->event.user_data = user_data; |
||
1367 | e->base.event = &e->event.base; |
||
1368 | e->base.file_priv = file_priv; |
||
1369 | e->base.destroy = (void (*) (struct drm_pending_event *)) kfree; |
||
5271 | serge | 1370 | |
6084 | serge | 1371 | out: |
1372 | return e; |
||
5271 | serge | 1373 | } |
1374 | |||
6084 | serge | 1375 | static void destroy_vblank_event(struct drm_device *dev, |
1376 | struct drm_file *file_priv, struct drm_pending_vblank_event *e) |
||
1377 | { |
||
1378 | unsigned long flags; |
||
5271 | serge | 1379 | |
6084 | serge | 1380 | spin_lock_irqsave(&dev->event_lock, flags); |
1381 | file_priv->event_space += sizeof e->event; |
||
1382 | spin_unlock_irqrestore(&dev->event_lock, flags); |
||
1383 | kfree(e); |
||
1384 | } |
||
1385 | |||
1386 | static int atomic_set_prop(struct drm_atomic_state *state, |
||
1387 | struct drm_mode_object *obj, struct drm_property *prop, |
||
1388 | uint64_t prop_value) |
||
5271 | serge | 1389 | { |
6084 | serge | 1390 | struct drm_mode_object *ref; |
1391 | int ret; |
||
1392 | |||
1393 | if (!drm_property_change_valid_get(prop, prop_value, &ref)) |
||
1394 | return -EINVAL; |
||
1395 | |||
1396 | switch (obj->type) { |
||
1397 | case DRM_MODE_OBJECT_CONNECTOR: { |
||
1398 | struct drm_connector *connector = obj_to_connector(obj); |
||
1399 | struct drm_connector_state *connector_state; |
||
1400 | |||
1401 | connector_state = drm_atomic_get_connector_state(state, connector); |
||
1402 | if (IS_ERR(connector_state)) { |
||
1403 | ret = PTR_ERR(connector_state); |
||
1404 | break; |
||
1405 | } |
||
1406 | |||
1407 | ret = drm_atomic_connector_set_property(connector, |
||
1408 | connector_state, prop, prop_value); |
||
1409 | break; |
||
1410 | } |
||
1411 | case DRM_MODE_OBJECT_CRTC: { |
||
1412 | struct drm_crtc *crtc = obj_to_crtc(obj); |
||
1413 | struct drm_crtc_state *crtc_state; |
||
1414 | |||
1415 | crtc_state = drm_atomic_get_crtc_state(state, crtc); |
||
1416 | if (IS_ERR(crtc_state)) { |
||
1417 | ret = PTR_ERR(crtc_state); |
||
1418 | break; |
||
1419 | } |
||
1420 | |||
1421 | ret = drm_atomic_crtc_set_property(crtc, |
||
1422 | crtc_state, prop, prop_value); |
||
1423 | break; |
||
1424 | } |
||
1425 | case DRM_MODE_OBJECT_PLANE: { |
||
1426 | struct drm_plane *plane = obj_to_plane(obj); |
||
1427 | struct drm_plane_state *plane_state; |
||
1428 | |||
1429 | plane_state = drm_atomic_get_plane_state(state, plane); |
||
1430 | if (IS_ERR(plane_state)) { |
||
1431 | ret = PTR_ERR(plane_state); |
||
1432 | break; |
||
1433 | } |
||
1434 | |||
1435 | ret = drm_atomic_plane_set_property(plane, |
||
1436 | plane_state, prop, prop_value); |
||
1437 | break; |
||
1438 | } |
||
1439 | default: |
||
1440 | ret = -EINVAL; |
||
1441 | break; |
||
1442 | } |
||
1443 | |||
1444 | drm_property_change_valid_put(prop, ref); |
||
1445 | return ret; |
||
5271 | serge | 1446 | } |
1447 | |||
1448 | /** |
||
6937 | serge | 1449 | * drm_atomic_clean_old_fb -- Unset old_fb pointers and set plane->fb pointers. |
5271 | serge | 1450 | * |
6084 | serge | 1451 | * @dev: drm device to check. |
1452 | * @plane_mask: plane mask for planes that were updated. |
||
1453 | * @ret: return value, can be -EDEADLK for a retry. |
||
1454 | * |
||
1455 | * Before doing an update plane->old_fb is set to plane->fb, |
||
1456 | * but before dropping the locks old_fb needs to be set to NULL |
||
1457 | * and plane->fb updated. This is a common operation for each |
||
1458 | * atomic update, so this call is split off as a helper. |
||
5271 | serge | 1459 | */ |
6084 | serge | 1460 | void drm_atomic_clean_old_fb(struct drm_device *dev, |
1461 | unsigned plane_mask, |
||
1462 | int ret) |
||
5271 | serge | 1463 | { |
6084 | serge | 1464 | struct drm_plane *plane; |
5271 | serge | 1465 | |
6084 | serge | 1466 | /* if succeeded, fixup legacy plane crtc/fb ptrs before dropping |
1467 | * locks (ie. while it is still safe to deref plane->state). We |
||
1468 | * need to do this here because the driver entry points cannot |
||
1469 | * distinguish between legacy and atomic ioctls. |
||
1470 | */ |
||
1471 | drm_for_each_plane_mask(plane, dev, plane_mask) { |
||
1472 | if (ret == 0) { |
||
1473 | struct drm_framebuffer *new_fb = plane->state->fb; |
||
1474 | if (new_fb) |
||
1475 | drm_framebuffer_reference(new_fb); |
||
1476 | plane->fb = new_fb; |
||
1477 | plane->crtc = plane->state->crtc; |
||
1478 | |||
1479 | if (plane->old_fb) |
||
1480 | drm_framebuffer_unreference(plane->old_fb); |
||
1481 | } |
||
1482 | plane->old_fb = NULL; |
||
1483 | } |
||
5271 | serge | 1484 | } |
6084 | serge | 1485 | EXPORT_SYMBOL(drm_atomic_clean_old_fb);>><>><>><>><>><>><>>>>> |