Daniel Vetter | c2fcd27 | 2014-11-05 00:14:14 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2014 Red Hat |
| 3 | * Copyright (C) 2014 Intel Corp. |
| 4 | * |
| 5 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 6 | * copy of this software and associated documentation files (the "Software"), |
| 7 | * to deal in the Software without restriction, including without limitation |
| 8 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| 9 | * and/or sell copies of the Software, and to permit persons to whom the |
| 10 | * Software is furnished to do so, subject to the following conditions: |
| 11 | * |
| 12 | * The above copyright notice and this permission notice shall be included in |
| 13 | * all copies or substantial portions of the 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 COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR |
| 19 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
| 20 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
| 21 | * OTHER DEALINGS IN THE SOFTWARE. |
| 22 | * |
| 23 | * Authors: |
| 24 | * Rob Clark <robdclark@gmail.com> |
| 25 | * Daniel Vetter <daniel.vetter@ffwll.ch> |
| 26 | */ |
| 27 | |
| 28 | #include <drm/drmP.h> |
| 29 | #include <drm/drm_atomic.h> |
| 30 | #include <drm/drm_plane_helper.h> |
| 31 | #include <drm/drm_crtc_helper.h> |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 32 | #include <drm/drm_atomic_helper.h> |
Daniel Vetter | e2330f0 | 2014-10-29 11:34:56 +0100 | [diff] [blame] | 33 | #include <linux/fence.h> |
Daniel Vetter | c2fcd27 | 2014-11-05 00:14:14 +0100 | [diff] [blame] | 34 | |
Daniel Vetter | 3150c7d | 2014-11-06 20:53:29 +0100 | [diff] [blame] | 35 | /** |
| 36 | * DOC: overview |
| 37 | * |
| 38 | * This helper library provides implementations of check and commit functions on |
| 39 | * top of the CRTC modeset helper callbacks and the plane helper callbacks. It |
| 40 | * also provides convenience implementations for the atomic state handling |
| 41 | * callbacks for drivers which don't need to subclass the drm core structures to |
| 42 | * add their own additional internal state. |
| 43 | * |
| 44 | * This library also provides default implementations for the check callback in |
| 45 | * drm_atomic_helper_check and for the commit callback with |
| 46 | * drm_atomic_helper_commit. But the individual stages and callbacks are expose |
| 47 | * to allow drivers to mix and match and e.g. use the plane helpers only |
| 48 | * together with a driver private modeset implementation. |
| 49 | * |
| 50 | * This library also provides implementations for all the legacy driver |
| 51 | * interfaces on top of the atomic interface. See drm_atomic_helper_set_config, |
| 52 | * drm_atomic_helper_disable_plane, drm_atomic_helper_disable_plane and the |
| 53 | * various functions to implement set_property callbacks. New drivers must not |
| 54 | * implement these functions themselves but must use the provided helpers. |
| 55 | */ |
Daniel Vetter | c2fcd27 | 2014-11-05 00:14:14 +0100 | [diff] [blame] | 56 | static void |
| 57 | drm_atomic_helper_plane_changed(struct drm_atomic_state *state, |
| 58 | struct drm_plane_state *plane_state, |
| 59 | struct drm_plane *plane) |
| 60 | { |
| 61 | struct drm_crtc_state *crtc_state; |
| 62 | |
| 63 | if (plane->state->crtc) { |
Rob Clark | 4b08eae | 2014-12-08 10:45:43 -0500 | [diff] [blame] | 64 | crtc_state = state->crtc_states[drm_crtc_index(plane->state->crtc)]; |
Daniel Vetter | c2fcd27 | 2014-11-05 00:14:14 +0100 | [diff] [blame] | 65 | |
| 66 | if (WARN_ON(!crtc_state)) |
| 67 | return; |
| 68 | |
| 69 | crtc_state->planes_changed = true; |
| 70 | } |
| 71 | |
| 72 | if (plane_state->crtc) { |
| 73 | crtc_state = |
| 74 | state->crtc_states[drm_crtc_index(plane_state->crtc)]; |
| 75 | |
| 76 | if (WARN_ON(!crtc_state)) |
| 77 | return; |
| 78 | |
| 79 | crtc_state->planes_changed = true; |
| 80 | } |
| 81 | } |
| 82 | |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 83 | static struct drm_crtc * |
| 84 | get_current_crtc_for_encoder(struct drm_device *dev, |
| 85 | struct drm_encoder *encoder) |
| 86 | { |
| 87 | struct drm_mode_config *config = &dev->mode_config; |
| 88 | struct drm_connector *connector; |
| 89 | |
| 90 | WARN_ON(!drm_modeset_is_locked(&config->connection_mutex)); |
| 91 | |
| 92 | list_for_each_entry(connector, &config->connector_list, head) { |
| 93 | if (connector->state->best_encoder != encoder) |
| 94 | continue; |
| 95 | |
| 96 | return connector->state->crtc; |
| 97 | } |
| 98 | |
| 99 | return NULL; |
| 100 | } |
| 101 | |
| 102 | static int |
| 103 | steal_encoder(struct drm_atomic_state *state, |
| 104 | struct drm_encoder *encoder, |
| 105 | struct drm_crtc *encoder_crtc) |
| 106 | { |
| 107 | struct drm_mode_config *config = &state->dev->mode_config; |
| 108 | struct drm_crtc_state *crtc_state; |
| 109 | struct drm_connector *connector; |
| 110 | struct drm_connector_state *connector_state; |
Daniel Vetter | 042652e | 2014-07-27 13:46:52 +0200 | [diff] [blame] | 111 | int ret; |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 112 | |
| 113 | /* |
| 114 | * We can only steal an encoder coming from a connector, which means we |
| 115 | * must already hold the connection_mutex. |
| 116 | */ |
| 117 | WARN_ON(!drm_modeset_is_locked(&config->connection_mutex)); |
| 118 | |
Daniel Vetter | 17a38d9 | 2015-02-22 12:24:16 +0100 | [diff] [blame] | 119 | DRM_DEBUG_ATOMIC("[ENCODER:%d:%s] in use on [CRTC:%d], stealing it\n", |
| 120 | encoder->base.id, encoder->name, |
| 121 | encoder_crtc->base.id); |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 122 | |
| 123 | crtc_state = drm_atomic_get_crtc_state(state, encoder_crtc); |
| 124 | if (IS_ERR(crtc_state)) |
| 125 | return PTR_ERR(crtc_state); |
| 126 | |
| 127 | crtc_state->mode_changed = true; |
| 128 | |
| 129 | list_for_each_entry(connector, &config->connector_list, head) { |
| 130 | if (connector->state->best_encoder != encoder) |
| 131 | continue; |
| 132 | |
Daniel Vetter | 17a38d9 | 2015-02-22 12:24:16 +0100 | [diff] [blame] | 133 | DRM_DEBUG_ATOMIC("Stealing encoder from [CONNECTOR:%d:%s]\n", |
| 134 | connector->base.id, |
| 135 | connector->name); |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 136 | |
| 137 | connector_state = drm_atomic_get_connector_state(state, |
| 138 | connector); |
| 139 | if (IS_ERR(connector_state)) |
| 140 | return PTR_ERR(connector_state); |
| 141 | |
Daniel Vetter | 042652e | 2014-07-27 13:46:52 +0200 | [diff] [blame] | 142 | ret = drm_atomic_set_crtc_for_connector(connector_state, NULL); |
| 143 | if (ret) |
| 144 | return ret; |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 145 | connector_state->best_encoder = NULL; |
| 146 | } |
| 147 | |
| 148 | return 0; |
| 149 | } |
| 150 | |
| 151 | static int |
| 152 | update_connector_routing(struct drm_atomic_state *state, int conn_idx) |
| 153 | { |
Ville Syrjälä | b5ceff2 | 2015-03-10 14:35:20 +0200 | [diff] [blame] | 154 | const struct drm_connector_helper_funcs *funcs; |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 155 | struct drm_encoder *new_encoder; |
| 156 | struct drm_crtc *encoder_crtc; |
| 157 | struct drm_connector *connector; |
| 158 | struct drm_connector_state *connector_state; |
| 159 | struct drm_crtc_state *crtc_state; |
| 160 | int idx, ret; |
| 161 | |
| 162 | connector = state->connectors[conn_idx]; |
| 163 | connector_state = state->connector_states[conn_idx]; |
| 164 | |
| 165 | if (!connector) |
| 166 | return 0; |
| 167 | |
Daniel Vetter | 17a38d9 | 2015-02-22 12:24:16 +0100 | [diff] [blame] | 168 | DRM_DEBUG_ATOMIC("Updating routing for [CONNECTOR:%d:%s]\n", |
| 169 | connector->base.id, |
| 170 | connector->name); |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 171 | |
| 172 | if (connector->state->crtc != connector_state->crtc) { |
| 173 | if (connector->state->crtc) { |
| 174 | idx = drm_crtc_index(connector->state->crtc); |
| 175 | |
| 176 | crtc_state = state->crtc_states[idx]; |
| 177 | crtc_state->mode_changed = true; |
| 178 | } |
| 179 | |
| 180 | if (connector_state->crtc) { |
| 181 | idx = drm_crtc_index(connector_state->crtc); |
| 182 | |
| 183 | crtc_state = state->crtc_states[idx]; |
| 184 | crtc_state->mode_changed = true; |
| 185 | } |
| 186 | } |
| 187 | |
| 188 | if (!connector_state->crtc) { |
Daniel Vetter | 17a38d9 | 2015-02-22 12:24:16 +0100 | [diff] [blame] | 189 | DRM_DEBUG_ATOMIC("Disabling [CONNECTOR:%d:%s]\n", |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 190 | connector->base.id, |
| 191 | connector->name); |
| 192 | |
| 193 | connector_state->best_encoder = NULL; |
| 194 | |
| 195 | return 0; |
| 196 | } |
| 197 | |
| 198 | funcs = connector->helper_private; |
| 199 | new_encoder = funcs->best_encoder(connector); |
| 200 | |
| 201 | if (!new_encoder) { |
Daniel Vetter | 17a38d9 | 2015-02-22 12:24:16 +0100 | [diff] [blame] | 202 | DRM_DEBUG_ATOMIC("No suitable encoder found for [CONNECTOR:%d:%s]\n", |
| 203 | connector->base.id, |
| 204 | connector->name); |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 205 | return -EINVAL; |
| 206 | } |
| 207 | |
| 208 | if (new_encoder == connector_state->best_encoder) { |
Daniel Vetter | 17a38d9 | 2015-02-22 12:24:16 +0100 | [diff] [blame] | 209 | DRM_DEBUG_ATOMIC("[CONNECTOR:%d:%s] keeps [ENCODER:%d:%s], now on [CRTC:%d]\n", |
| 210 | connector->base.id, |
| 211 | connector->name, |
| 212 | new_encoder->base.id, |
| 213 | new_encoder->name, |
| 214 | connector_state->crtc->base.id); |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 215 | |
| 216 | return 0; |
| 217 | } |
| 218 | |
| 219 | encoder_crtc = get_current_crtc_for_encoder(state->dev, |
| 220 | new_encoder); |
| 221 | |
| 222 | if (encoder_crtc) { |
| 223 | ret = steal_encoder(state, new_encoder, encoder_crtc); |
| 224 | if (ret) { |
Daniel Vetter | 17a38d9 | 2015-02-22 12:24:16 +0100 | [diff] [blame] | 225 | DRM_DEBUG_ATOMIC("Encoder stealing failed for [CONNECTOR:%d:%s]\n", |
| 226 | connector->base.id, |
| 227 | connector->name); |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 228 | return ret; |
| 229 | } |
| 230 | } |
| 231 | |
| 232 | connector_state->best_encoder = new_encoder; |
| 233 | idx = drm_crtc_index(connector_state->crtc); |
| 234 | |
| 235 | crtc_state = state->crtc_states[idx]; |
| 236 | crtc_state->mode_changed = true; |
| 237 | |
Daniel Vetter | 17a38d9 | 2015-02-22 12:24:16 +0100 | [diff] [blame] | 238 | DRM_DEBUG_ATOMIC("[CONNECTOR:%d:%s] using [ENCODER:%d:%s] on [CRTC:%d]\n", |
| 239 | connector->base.id, |
| 240 | connector->name, |
| 241 | new_encoder->base.id, |
| 242 | new_encoder->name, |
| 243 | connector_state->crtc->base.id); |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 244 | |
| 245 | return 0; |
| 246 | } |
| 247 | |
| 248 | static int |
| 249 | mode_fixup(struct drm_atomic_state *state) |
| 250 | { |
Ander Conselvan de Oliveira | df63b99 | 2015-04-10 14:58:39 +0300 | [diff] [blame] | 251 | struct drm_crtc *crtc; |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 252 | struct drm_crtc_state *crtc_state; |
Ander Conselvan de Oliveira | df63b99 | 2015-04-10 14:58:39 +0300 | [diff] [blame] | 253 | struct drm_connector *connector; |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 254 | struct drm_connector_state *conn_state; |
| 255 | int i; |
| 256 | bool ret; |
| 257 | |
Ander Conselvan de Oliveira | df63b99 | 2015-04-10 14:58:39 +0300 | [diff] [blame] | 258 | for_each_crtc_in_state(state, crtc, crtc_state, i) { |
| 259 | if (!crtc_state->mode_changed) |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 260 | continue; |
| 261 | |
| 262 | drm_mode_copy(&crtc_state->adjusted_mode, &crtc_state->mode); |
| 263 | } |
| 264 | |
Ander Conselvan de Oliveira | df63b99 | 2015-04-10 14:58:39 +0300 | [diff] [blame] | 265 | for_each_connector_in_state(state, connector, conn_state, i) { |
Ville Syrjälä | b5ceff2 | 2015-03-10 14:35:20 +0200 | [diff] [blame] | 266 | const struct drm_encoder_helper_funcs *funcs; |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 267 | struct drm_encoder *encoder; |
| 268 | |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 269 | WARN_ON(!!conn_state->best_encoder != !!conn_state->crtc); |
| 270 | |
| 271 | if (!conn_state->crtc || !conn_state->best_encoder) |
| 272 | continue; |
| 273 | |
| 274 | crtc_state = |
| 275 | state->crtc_states[drm_crtc_index(conn_state->crtc)]; |
| 276 | |
| 277 | /* |
| 278 | * Each encoder has at most one connector (since we always steal |
| 279 | * it away), so we won't call ->mode_fixup twice. |
| 280 | */ |
| 281 | encoder = conn_state->best_encoder; |
| 282 | funcs = encoder->helper_private; |
| 283 | |
| 284 | if (encoder->bridge && encoder->bridge->funcs->mode_fixup) { |
| 285 | ret = encoder->bridge->funcs->mode_fixup( |
| 286 | encoder->bridge, &crtc_state->mode, |
| 287 | &crtc_state->adjusted_mode); |
| 288 | if (!ret) { |
Daniel Vetter | 17a38d9 | 2015-02-22 12:24:16 +0100 | [diff] [blame] | 289 | DRM_DEBUG_ATOMIC("Bridge fixup failed\n"); |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 290 | return -EINVAL; |
| 291 | } |
| 292 | } |
| 293 | |
Thierry Reding | 4cd4df8 | 2014-12-03 16:44:34 +0100 | [diff] [blame] | 294 | if (funcs->atomic_check) { |
| 295 | ret = funcs->atomic_check(encoder, crtc_state, |
| 296 | conn_state); |
| 297 | if (ret) { |
Daniel Vetter | 17a38d9 | 2015-02-22 12:24:16 +0100 | [diff] [blame] | 298 | DRM_DEBUG_ATOMIC("[ENCODER:%d:%s] check failed\n", |
| 299 | encoder->base.id, encoder->name); |
Thierry Reding | 4cd4df8 | 2014-12-03 16:44:34 +0100 | [diff] [blame] | 300 | return ret; |
| 301 | } |
| 302 | } else { |
| 303 | ret = funcs->mode_fixup(encoder, &crtc_state->mode, |
| 304 | &crtc_state->adjusted_mode); |
| 305 | if (!ret) { |
Daniel Vetter | 17a38d9 | 2015-02-22 12:24:16 +0100 | [diff] [blame] | 306 | DRM_DEBUG_ATOMIC("[ENCODER:%d:%s] fixup failed\n", |
| 307 | encoder->base.id, encoder->name); |
Thierry Reding | 4cd4df8 | 2014-12-03 16:44:34 +0100 | [diff] [blame] | 308 | return -EINVAL; |
| 309 | } |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 310 | } |
| 311 | } |
| 312 | |
Ander Conselvan de Oliveira | df63b99 | 2015-04-10 14:58:39 +0300 | [diff] [blame] | 313 | for_each_crtc_in_state(state, crtc, crtc_state, i) { |
Ville Syrjälä | b5ceff2 | 2015-03-10 14:35:20 +0200 | [diff] [blame] | 314 | const struct drm_crtc_helper_funcs *funcs; |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 315 | |
Ander Conselvan de Oliveira | df63b99 | 2015-04-10 14:58:39 +0300 | [diff] [blame] | 316 | if (!crtc_state->mode_changed) |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 317 | continue; |
| 318 | |
| 319 | funcs = crtc->helper_private; |
| 320 | ret = funcs->mode_fixup(crtc, &crtc_state->mode, |
| 321 | &crtc_state->adjusted_mode); |
| 322 | if (!ret) { |
Daniel Vetter | 17a38d9 | 2015-02-22 12:24:16 +0100 | [diff] [blame] | 323 | DRM_DEBUG_ATOMIC("[CRTC:%d] fixup failed\n", |
| 324 | crtc->base.id); |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 325 | return -EINVAL; |
| 326 | } |
| 327 | } |
| 328 | |
| 329 | return 0; |
| 330 | } |
| 331 | |
Daniel Vetter | eab3bbe | 2015-01-22 16:36:21 +0100 | [diff] [blame] | 332 | static bool |
| 333 | needs_modeset(struct drm_crtc_state *state) |
| 334 | { |
| 335 | return state->mode_changed || state->active_changed; |
| 336 | } |
| 337 | |
Daniel Vetter | d9b1362 | 2014-11-26 16:57:41 +0100 | [diff] [blame] | 338 | /** |
John Hunter | f98bd3e | 2015-03-17 15:30:26 +0800 | [diff] [blame] | 339 | * drm_atomic_helper_check_modeset - validate state object for modeset changes |
Daniel Vetter | d9b1362 | 2014-11-26 16:57:41 +0100 | [diff] [blame] | 340 | * @dev: DRM device |
| 341 | * @state: the driver state object |
| 342 | * |
| 343 | * Check the state object to see if the requested state is physically possible. |
| 344 | * This does all the crtc and connector related computations for an atomic |
| 345 | * update. It computes and updates crtc_state->mode_changed, adds any additional |
| 346 | * connectors needed for full modesets and calls down into ->mode_fixup |
| 347 | * functions of the driver backend. |
| 348 | * |
| 349 | * IMPORTANT: |
| 350 | * |
| 351 | * Drivers which update ->mode_changed (e.g. in their ->atomic_check hooks if a |
| 352 | * plane update can't be done without a full modeset) _must_ call this function |
| 353 | * afterwards after that change. It is permitted to call this function multiple |
| 354 | * times for the same update, e.g. when the ->atomic_check functions depend upon |
| 355 | * the adjusted dotclock for fifo space allocation and watermark computation. |
| 356 | * |
| 357 | * RETURNS |
| 358 | * Zero for success or -errno |
| 359 | */ |
| 360 | int |
Rob Clark | 934ce1c | 2014-11-19 16:41:33 -0500 | [diff] [blame] | 361 | drm_atomic_helper_check_modeset(struct drm_device *dev, |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 362 | struct drm_atomic_state *state) |
| 363 | { |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 364 | struct drm_crtc *crtc; |
| 365 | struct drm_crtc_state *crtc_state; |
Ander Conselvan de Oliveira | df63b99 | 2015-04-10 14:58:39 +0300 | [diff] [blame] | 366 | struct drm_connector *connector; |
| 367 | struct drm_connector_state *connector_state; |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 368 | int i, ret; |
| 369 | |
Ander Conselvan de Oliveira | df63b99 | 2015-04-10 14:58:39 +0300 | [diff] [blame] | 370 | for_each_crtc_in_state(state, crtc, crtc_state, i) { |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 371 | if (!drm_mode_equal(&crtc->state->mode, &crtc_state->mode)) { |
Daniel Vetter | 17a38d9 | 2015-02-22 12:24:16 +0100 | [diff] [blame] | 372 | DRM_DEBUG_ATOMIC("[CRTC:%d] mode changed\n", |
| 373 | crtc->base.id); |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 374 | crtc_state->mode_changed = true; |
| 375 | } |
| 376 | |
| 377 | if (crtc->state->enable != crtc_state->enable) { |
Daniel Vetter | 17a38d9 | 2015-02-22 12:24:16 +0100 | [diff] [blame] | 378 | DRM_DEBUG_ATOMIC("[CRTC:%d] enable changed\n", |
| 379 | crtc->base.id); |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 380 | crtc_state->mode_changed = true; |
| 381 | } |
| 382 | } |
| 383 | |
Ander Conselvan de Oliveira | df63b99 | 2015-04-10 14:58:39 +0300 | [diff] [blame] | 384 | for_each_connector_in_state(state, connector, connector_state, i) { |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 385 | /* |
| 386 | * This only sets crtc->mode_changed for routing changes, |
| 387 | * drivers must set crtc->mode_changed themselves when connector |
| 388 | * properties need to be updated. |
| 389 | */ |
| 390 | ret = update_connector_routing(state, i); |
| 391 | if (ret) |
| 392 | return ret; |
| 393 | } |
| 394 | |
| 395 | /* |
| 396 | * After all the routing has been prepared we need to add in any |
| 397 | * connector which is itself unchanged, but who's crtc changes it's |
| 398 | * configuration. This must be done before calling mode_fixup in case a |
| 399 | * crtc only changed its mode but has the same set of connectors. |
| 400 | */ |
Ander Conselvan de Oliveira | df63b99 | 2015-04-10 14:58:39 +0300 | [diff] [blame] | 401 | for_each_crtc_in_state(state, crtc, crtc_state, i) { |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 402 | int num_connectors; |
| 403 | |
Daniel Vetter | eab3bbe | 2015-01-22 16:36:21 +0100 | [diff] [blame] | 404 | /* |
| 405 | * We must set ->active_changed after walking connectors for |
| 406 | * otherwise an update that only changes active would result in |
| 407 | * a full modeset because update_connector_routing force that. |
| 408 | */ |
| 409 | if (crtc->state->active != crtc_state->active) { |
Daniel Vetter | 17a38d9 | 2015-02-22 12:24:16 +0100 | [diff] [blame] | 410 | DRM_DEBUG_ATOMIC("[CRTC:%d] active changed\n", |
| 411 | crtc->base.id); |
Daniel Vetter | eab3bbe | 2015-01-22 16:36:21 +0100 | [diff] [blame] | 412 | crtc_state->active_changed = true; |
| 413 | } |
| 414 | |
| 415 | if (!needs_modeset(crtc_state)) |
| 416 | continue; |
| 417 | |
Daniel Vetter | 17a38d9 | 2015-02-22 12:24:16 +0100 | [diff] [blame] | 418 | DRM_DEBUG_ATOMIC("[CRTC:%d] needs all connectors, enable: %c, active: %c\n", |
| 419 | crtc->base.id, |
| 420 | crtc_state->enable ? 'y' : 'n', |
Daniel Vetter | eab3bbe | 2015-01-22 16:36:21 +0100 | [diff] [blame] | 421 | crtc_state->active ? 'y' : 'n'); |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 422 | |
| 423 | ret = drm_atomic_add_affected_connectors(state, crtc); |
| 424 | if (ret != 0) |
| 425 | return ret; |
| 426 | |
| 427 | num_connectors = drm_atomic_connectors_for_crtc(state, |
| 428 | crtc); |
| 429 | |
| 430 | if (crtc_state->enable != !!num_connectors) { |
Daniel Vetter | 17a38d9 | 2015-02-22 12:24:16 +0100 | [diff] [blame] | 431 | DRM_DEBUG_ATOMIC("[CRTC:%d] enabled/connectors mismatch\n", |
| 432 | crtc->base.id); |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 433 | |
| 434 | return -EINVAL; |
| 435 | } |
| 436 | } |
| 437 | |
| 438 | return mode_fixup(state); |
| 439 | } |
Daniel Vetter | d9b1362 | 2014-11-26 16:57:41 +0100 | [diff] [blame] | 440 | EXPORT_SYMBOL(drm_atomic_helper_check_modeset); |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 441 | |
Daniel Vetter | c2fcd27 | 2014-11-05 00:14:14 +0100 | [diff] [blame] | 442 | /** |
John Hunter | f98bd3e | 2015-03-17 15:30:26 +0800 | [diff] [blame] | 443 | * drm_atomic_helper_check_planes - validate state object for planes changes |
Daniel Vetter | c2fcd27 | 2014-11-05 00:14:14 +0100 | [diff] [blame] | 444 | * @dev: DRM device |
| 445 | * @state: the driver state object |
| 446 | * |
| 447 | * Check the state object to see if the requested state is physically possible. |
Daniel Vetter | d9b1362 | 2014-11-26 16:57:41 +0100 | [diff] [blame] | 448 | * This does all the plane update related checks using by calling into the |
| 449 | * ->atomic_check hooks provided by the driver. |
Daniel Vetter | c2fcd27 | 2014-11-05 00:14:14 +0100 | [diff] [blame] | 450 | * |
| 451 | * RETURNS |
| 452 | * Zero for success or -errno |
| 453 | */ |
Daniel Vetter | d9b1362 | 2014-11-26 16:57:41 +0100 | [diff] [blame] | 454 | int |
| 455 | drm_atomic_helper_check_planes(struct drm_device *dev, |
| 456 | struct drm_atomic_state *state) |
Daniel Vetter | c2fcd27 | 2014-11-05 00:14:14 +0100 | [diff] [blame] | 457 | { |
Ander Conselvan de Oliveira | df63b99 | 2015-04-10 14:58:39 +0300 | [diff] [blame] | 458 | struct drm_crtc *crtc; |
| 459 | struct drm_crtc_state *crtc_state; |
| 460 | struct drm_plane *plane; |
| 461 | struct drm_plane_state *plane_state; |
Daniel Vetter | c2fcd27 | 2014-11-05 00:14:14 +0100 | [diff] [blame] | 462 | int i, ret = 0; |
| 463 | |
Ander Conselvan de Oliveira | df63b99 | 2015-04-10 14:58:39 +0300 | [diff] [blame] | 464 | for_each_plane_in_state(state, plane, plane_state, i) { |
Ville Syrjälä | b5ceff2 | 2015-03-10 14:35:20 +0200 | [diff] [blame] | 465 | const struct drm_plane_helper_funcs *funcs; |
Daniel Vetter | c2fcd27 | 2014-11-05 00:14:14 +0100 | [diff] [blame] | 466 | |
| 467 | funcs = plane->helper_private; |
| 468 | |
| 469 | drm_atomic_helper_plane_changed(state, plane_state, plane); |
| 470 | |
| 471 | if (!funcs || !funcs->atomic_check) |
| 472 | continue; |
| 473 | |
| 474 | ret = funcs->atomic_check(plane, plane_state); |
| 475 | if (ret) { |
Daniel Vetter | 17a38d9 | 2015-02-22 12:24:16 +0100 | [diff] [blame] | 476 | DRM_DEBUG_ATOMIC("[PLANE:%d] atomic driver check failed\n", |
| 477 | plane->base.id); |
Daniel Vetter | c2fcd27 | 2014-11-05 00:14:14 +0100 | [diff] [blame] | 478 | return ret; |
| 479 | } |
| 480 | } |
| 481 | |
Ander Conselvan de Oliveira | df63b99 | 2015-04-10 14:58:39 +0300 | [diff] [blame] | 482 | for_each_crtc_in_state(state, crtc, crtc_state, i) { |
Ville Syrjälä | b5ceff2 | 2015-03-10 14:35:20 +0200 | [diff] [blame] | 483 | const struct drm_crtc_helper_funcs *funcs; |
Daniel Vetter | c2fcd27 | 2014-11-05 00:14:14 +0100 | [diff] [blame] | 484 | |
| 485 | funcs = crtc->helper_private; |
| 486 | |
| 487 | if (!funcs || !funcs->atomic_check) |
| 488 | continue; |
| 489 | |
| 490 | ret = funcs->atomic_check(crtc, state->crtc_states[i]); |
| 491 | if (ret) { |
Daniel Vetter | 17a38d9 | 2015-02-22 12:24:16 +0100 | [diff] [blame] | 492 | DRM_DEBUG_ATOMIC("[CRTC:%d] atomic driver check failed\n", |
| 493 | crtc->base.id); |
Daniel Vetter | c2fcd27 | 2014-11-05 00:14:14 +0100 | [diff] [blame] | 494 | return ret; |
| 495 | } |
| 496 | } |
| 497 | |
Daniel Vetter | d9b1362 | 2014-11-26 16:57:41 +0100 | [diff] [blame] | 498 | return ret; |
| 499 | } |
| 500 | EXPORT_SYMBOL(drm_atomic_helper_check_planes); |
| 501 | |
| 502 | /** |
| 503 | * drm_atomic_helper_check - validate state object |
| 504 | * @dev: DRM device |
| 505 | * @state: the driver state object |
| 506 | * |
| 507 | * Check the state object to see if the requested state is physically possible. |
| 508 | * Only crtcs and planes have check callbacks, so for any additional (global) |
| 509 | * checking that a driver needs it can simply wrap that around this function. |
| 510 | * Drivers without such needs can directly use this as their ->atomic_check() |
| 511 | * callback. |
| 512 | * |
Daniel Vetter | b4274fb | 2014-11-26 17:02:18 +0100 | [diff] [blame] | 513 | * This just wraps the two parts of the state checking for planes and modeset |
| 514 | * state in the default order: First it calls drm_atomic_helper_check_modeset() |
| 515 | * and then drm_atomic_helper_check_planes(). The assumption is that the |
| 516 | * ->atomic_check functions depend upon an updated adjusted_mode.clock to |
| 517 | * e.g. properly compute watermarks. |
| 518 | * |
Daniel Vetter | d9b1362 | 2014-11-26 16:57:41 +0100 | [diff] [blame] | 519 | * RETURNS |
| 520 | * Zero for success or -errno |
| 521 | */ |
| 522 | int drm_atomic_helper_check(struct drm_device *dev, |
| 523 | struct drm_atomic_state *state) |
| 524 | { |
| 525 | int ret; |
| 526 | |
Daniel Vetter | b4274fb | 2014-11-26 17:02:18 +0100 | [diff] [blame] | 527 | ret = drm_atomic_helper_check_modeset(dev, state); |
Daniel Vetter | d9b1362 | 2014-11-26 16:57:41 +0100 | [diff] [blame] | 528 | if (ret) |
| 529 | return ret; |
| 530 | |
Daniel Vetter | b4274fb | 2014-11-26 17:02:18 +0100 | [diff] [blame] | 531 | ret = drm_atomic_helper_check_planes(dev, state); |
Rob Clark | 934ce1c | 2014-11-19 16:41:33 -0500 | [diff] [blame] | 532 | if (ret) |
| 533 | return ret; |
| 534 | |
Daniel Vetter | c2fcd27 | 2014-11-05 00:14:14 +0100 | [diff] [blame] | 535 | return ret; |
| 536 | } |
| 537 | EXPORT_SYMBOL(drm_atomic_helper_check); |
| 538 | |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 539 | static void |
| 540 | disable_outputs(struct drm_device *dev, struct drm_atomic_state *old_state) |
| 541 | { |
Ander Conselvan de Oliveira | df63b99 | 2015-04-10 14:58:39 +0300 | [diff] [blame] | 542 | struct drm_connector *connector; |
| 543 | struct drm_connector_state *old_conn_state; |
| 544 | struct drm_crtc *crtc; |
| 545 | struct drm_crtc_state *old_crtc_state; |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 546 | int i; |
| 547 | |
Ander Conselvan de Oliveira | df63b99 | 2015-04-10 14:58:39 +0300 | [diff] [blame] | 548 | for_each_connector_in_state(old_state, connector, old_conn_state, i) { |
Ville Syrjälä | b5ceff2 | 2015-03-10 14:35:20 +0200 | [diff] [blame] | 549 | const struct drm_encoder_helper_funcs *funcs; |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 550 | struct drm_encoder *encoder; |
Daniel Vetter | eab3bbe | 2015-01-22 16:36:21 +0100 | [diff] [blame] | 551 | struct drm_crtc_state *old_crtc_state; |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 552 | |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 553 | /* Shut down everything that's in the changeset and currently |
| 554 | * still on. So need to check the old, saved state. */ |
Ander Conselvan de Oliveira | df63b99 | 2015-04-10 14:58:39 +0300 | [diff] [blame] | 555 | if (!old_conn_state->crtc) |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 556 | continue; |
| 557 | |
Daniel Vetter | eab3bbe | 2015-01-22 16:36:21 +0100 | [diff] [blame] | 558 | old_crtc_state = old_state->crtc_states[drm_crtc_index(old_conn_state->crtc)]; |
| 559 | |
Daniel Vetter | 4218a32 | 2015-03-26 22:18:40 +0100 | [diff] [blame] | 560 | if (!old_crtc_state->active || |
| 561 | !needs_modeset(old_conn_state->crtc->state)) |
Daniel Vetter | eab3bbe | 2015-01-22 16:36:21 +0100 | [diff] [blame] | 562 | continue; |
| 563 | |
Rob Clark | 46df9ad | 2014-11-20 15:40:36 -0500 | [diff] [blame] | 564 | encoder = old_conn_state->best_encoder; |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 565 | |
Rob Clark | 46df9ad | 2014-11-20 15:40:36 -0500 | [diff] [blame] | 566 | /* We shouldn't get this far if we didn't previously have |
| 567 | * an encoder.. but WARN_ON() rather than explode. |
| 568 | */ |
| 569 | if (WARN_ON(!encoder)) |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 570 | continue; |
| 571 | |
| 572 | funcs = encoder->helper_private; |
| 573 | |
Daniel Vetter | 17a38d9 | 2015-02-22 12:24:16 +0100 | [diff] [blame] | 574 | DRM_DEBUG_ATOMIC("disabling [ENCODER:%d:%s]\n", |
| 575 | encoder->base.id, encoder->name); |
Daniel Vetter | 95d6eb3 | 2015-01-22 16:36:25 +0100 | [diff] [blame] | 576 | |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 577 | /* |
| 578 | * Each encoder has at most one connector (since we always steal |
John Hunter | f98bd3e | 2015-03-17 15:30:26 +0800 | [diff] [blame] | 579 | * it away), so we won't call disable hooks twice. |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 580 | */ |
| 581 | if (encoder->bridge) |
| 582 | encoder->bridge->funcs->disable(encoder->bridge); |
| 583 | |
| 584 | /* Right function depends upon target state. */ |
Daniel Vetter | ee0a89c | 2015-01-22 16:36:24 +0100 | [diff] [blame] | 585 | if (connector->state->crtc && funcs->prepare) |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 586 | funcs->prepare(encoder); |
| 587 | else if (funcs->disable) |
| 588 | funcs->disable(encoder); |
| 589 | else |
| 590 | funcs->dpms(encoder, DRM_MODE_DPMS_OFF); |
| 591 | |
| 592 | if (encoder->bridge) |
| 593 | encoder->bridge->funcs->post_disable(encoder->bridge); |
| 594 | } |
| 595 | |
Ander Conselvan de Oliveira | df63b99 | 2015-04-10 14:58:39 +0300 | [diff] [blame] | 596 | for_each_crtc_in_state(old_state, crtc, old_crtc_state, i) { |
Ville Syrjälä | b5ceff2 | 2015-03-10 14:35:20 +0200 | [diff] [blame] | 597 | const struct drm_crtc_helper_funcs *funcs; |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 598 | |
| 599 | /* Shut down everything that needs a full modeset. */ |
Ander Conselvan de Oliveira | df63b99 | 2015-04-10 14:58:39 +0300 | [diff] [blame] | 600 | if (!needs_modeset(crtc->state)) |
Daniel Vetter | eab3bbe | 2015-01-22 16:36:21 +0100 | [diff] [blame] | 601 | continue; |
| 602 | |
| 603 | if (!old_crtc_state->active) |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 604 | continue; |
| 605 | |
| 606 | funcs = crtc->helper_private; |
| 607 | |
Daniel Vetter | 17a38d9 | 2015-02-22 12:24:16 +0100 | [diff] [blame] | 608 | DRM_DEBUG_ATOMIC("disabling [CRTC:%d]\n", |
| 609 | crtc->base.id); |
Daniel Vetter | 95d6eb3 | 2015-01-22 16:36:25 +0100 | [diff] [blame] | 610 | |
| 611 | |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 612 | /* Right function depends upon target state. */ |
Daniel Vetter | ee0a89c | 2015-01-22 16:36:24 +0100 | [diff] [blame] | 613 | if (crtc->state->enable && funcs->prepare) |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 614 | funcs->prepare(crtc); |
| 615 | else if (funcs->disable) |
| 616 | funcs->disable(crtc); |
| 617 | else |
| 618 | funcs->dpms(crtc, DRM_MODE_DPMS_OFF); |
| 619 | } |
| 620 | } |
| 621 | |
| 622 | static void |
| 623 | set_routing_links(struct drm_device *dev, struct drm_atomic_state *old_state) |
| 624 | { |
Ander Conselvan de Oliveira | df63b99 | 2015-04-10 14:58:39 +0300 | [diff] [blame] | 625 | struct drm_connector *connector; |
| 626 | struct drm_connector_state *old_conn_state; |
| 627 | struct drm_crtc *crtc; |
| 628 | struct drm_crtc_state *old_crtc_state; |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 629 | int i; |
| 630 | |
| 631 | /* clear out existing links */ |
Ander Conselvan de Oliveira | df63b99 | 2015-04-10 14:58:39 +0300 | [diff] [blame] | 632 | for_each_connector_in_state(old_state, connector, old_conn_state, i) { |
| 633 | if (!connector->encoder) |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 634 | continue; |
| 635 | |
| 636 | WARN_ON(!connector->encoder->crtc); |
| 637 | |
| 638 | connector->encoder->crtc = NULL; |
| 639 | connector->encoder = NULL; |
| 640 | } |
| 641 | |
| 642 | /* set new links */ |
Ander Conselvan de Oliveira | df63b99 | 2015-04-10 14:58:39 +0300 | [diff] [blame] | 643 | for_each_connector_in_state(old_state, connector, old_conn_state, i) { |
| 644 | if (!connector->state->crtc) |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 645 | continue; |
| 646 | |
| 647 | if (WARN_ON(!connector->state->best_encoder)) |
| 648 | continue; |
| 649 | |
| 650 | connector->encoder = connector->state->best_encoder; |
| 651 | connector->encoder->crtc = connector->state->crtc; |
| 652 | } |
| 653 | |
| 654 | /* set legacy state in the crtc structure */ |
Ander Conselvan de Oliveira | df63b99 | 2015-04-10 14:58:39 +0300 | [diff] [blame] | 655 | for_each_crtc_in_state(old_state, crtc, old_crtc_state, i) { |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 656 | crtc->mode = crtc->state->mode; |
| 657 | crtc->enabled = crtc->state->enable; |
| 658 | crtc->x = crtc->primary->state->src_x >> 16; |
| 659 | crtc->y = crtc->primary->state->src_y >> 16; |
| 660 | } |
| 661 | } |
| 662 | |
| 663 | static void |
| 664 | crtc_set_mode(struct drm_device *dev, struct drm_atomic_state *old_state) |
| 665 | { |
Ander Conselvan de Oliveira | df63b99 | 2015-04-10 14:58:39 +0300 | [diff] [blame] | 666 | struct drm_crtc *crtc; |
| 667 | struct drm_crtc_state *old_crtc_state; |
| 668 | struct drm_connector *connector; |
| 669 | struct drm_connector_state *old_conn_state; |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 670 | int i; |
| 671 | |
Ander Conselvan de Oliveira | df63b99 | 2015-04-10 14:58:39 +0300 | [diff] [blame] | 672 | for_each_crtc_in_state(old_state, crtc, old_crtc_state, i) { |
Ville Syrjälä | b5ceff2 | 2015-03-10 14:35:20 +0200 | [diff] [blame] | 673 | const struct drm_crtc_helper_funcs *funcs; |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 674 | |
Ander Conselvan de Oliveira | df63b99 | 2015-04-10 14:58:39 +0300 | [diff] [blame] | 675 | if (!crtc->state->mode_changed) |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 676 | continue; |
| 677 | |
| 678 | funcs = crtc->helper_private; |
| 679 | |
Daniel Vetter | c982bd9 | 2015-02-22 12:24:20 +0100 | [diff] [blame] | 680 | if (crtc->state->enable && funcs->mode_set_nofb) { |
Daniel Vetter | 17a38d9 | 2015-02-22 12:24:16 +0100 | [diff] [blame] | 681 | DRM_DEBUG_ATOMIC("modeset on [CRTC:%d]\n", |
| 682 | crtc->base.id); |
Daniel Vetter | 95d6eb3 | 2015-01-22 16:36:25 +0100 | [diff] [blame] | 683 | |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 684 | funcs->mode_set_nofb(crtc); |
Daniel Vetter | 95d6eb3 | 2015-01-22 16:36:25 +0100 | [diff] [blame] | 685 | } |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 686 | } |
| 687 | |
Ander Conselvan de Oliveira | df63b99 | 2015-04-10 14:58:39 +0300 | [diff] [blame] | 688 | for_each_connector_in_state(old_state, connector, old_conn_state, i) { |
Ville Syrjälä | b5ceff2 | 2015-03-10 14:35:20 +0200 | [diff] [blame] | 689 | const struct drm_encoder_helper_funcs *funcs; |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 690 | struct drm_crtc_state *new_crtc_state; |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 691 | struct drm_encoder *encoder; |
| 692 | struct drm_display_mode *mode, *adjusted_mode; |
| 693 | |
Ander Conselvan de Oliveira | df63b99 | 2015-04-10 14:58:39 +0300 | [diff] [blame] | 694 | if (!connector->state->best_encoder) |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 695 | continue; |
| 696 | |
| 697 | encoder = connector->state->best_encoder; |
| 698 | funcs = encoder->helper_private; |
| 699 | new_crtc_state = connector->state->crtc->state; |
| 700 | mode = &new_crtc_state->mode; |
| 701 | adjusted_mode = &new_crtc_state->adjusted_mode; |
| 702 | |
Daniel Vetter | eab3bbe | 2015-01-22 16:36:21 +0100 | [diff] [blame] | 703 | if (!new_crtc_state->mode_changed) |
| 704 | continue; |
| 705 | |
Daniel Vetter | 17a38d9 | 2015-02-22 12:24:16 +0100 | [diff] [blame] | 706 | DRM_DEBUG_ATOMIC("modeset on [ENCODER:%d:%s]\n", |
| 707 | encoder->base.id, encoder->name); |
Daniel Vetter | 95d6eb3 | 2015-01-22 16:36:25 +0100 | [diff] [blame] | 708 | |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 709 | /* |
| 710 | * Each encoder has at most one connector (since we always steal |
John Hunter | f98bd3e | 2015-03-17 15:30:26 +0800 | [diff] [blame] | 711 | * it away), so we won't call mode_set hooks twice. |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 712 | */ |
Daniel Vetter | c982bd9 | 2015-02-22 12:24:20 +0100 | [diff] [blame] | 713 | if (funcs->mode_set) |
| 714 | funcs->mode_set(encoder, mode, adjusted_mode); |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 715 | |
| 716 | if (encoder->bridge && encoder->bridge->funcs->mode_set) |
| 717 | encoder->bridge->funcs->mode_set(encoder->bridge, |
| 718 | mode, adjusted_mode); |
| 719 | } |
| 720 | } |
| 721 | |
| 722 | /** |
Daniel Vetter | 1af434a | 2015-02-22 12:24:19 +0100 | [diff] [blame] | 723 | * drm_atomic_helper_commit_modeset_disables - modeset commit to disable outputs |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 724 | * @dev: DRM device |
Laurent Pinchart | a072f80 | 2015-02-22 12:24:18 +0100 | [diff] [blame] | 725 | * @old_state: atomic state object with old state structures |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 726 | * |
Daniel Vetter | 1af434a | 2015-02-22 12:24:19 +0100 | [diff] [blame] | 727 | * This function shuts down all the outputs that need to be shut down and |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 728 | * prepares them (if required) with the new mode. |
Daniel Vetter | 1af434a | 2015-02-22 12:24:19 +0100 | [diff] [blame] | 729 | * |
| 730 | * For compatability with legacy crtc helpers this should be called before |
| 731 | * drm_atomic_helper_commit_planes(), which is what the default commit function |
| 732 | * does. But drivers with different needs can group the modeset commits together |
| 733 | * and do the plane commits at the end. This is useful for drivers doing runtime |
| 734 | * PM since planes updates then only happen when the CRTC is actually enabled. |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 735 | */ |
Daniel Vetter | 1af434a | 2015-02-22 12:24:19 +0100 | [diff] [blame] | 736 | void drm_atomic_helper_commit_modeset_disables(struct drm_device *dev, |
| 737 | struct drm_atomic_state *old_state) |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 738 | { |
Laurent Pinchart | a072f80 | 2015-02-22 12:24:18 +0100 | [diff] [blame] | 739 | disable_outputs(dev, old_state); |
| 740 | set_routing_links(dev, old_state); |
| 741 | crtc_set_mode(dev, old_state); |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 742 | } |
Daniel Vetter | 1af434a | 2015-02-22 12:24:19 +0100 | [diff] [blame] | 743 | EXPORT_SYMBOL(drm_atomic_helper_commit_modeset_disables); |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 744 | |
| 745 | /** |
Daniel Vetter | 1af434a | 2015-02-22 12:24:19 +0100 | [diff] [blame] | 746 | * drm_atomic_helper_commit_modeset_enables - modeset commit to enable outputs |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 747 | * @dev: DRM device |
| 748 | * @old_state: atomic state object with old state structures |
| 749 | * |
Daniel Vetter | 1af434a | 2015-02-22 12:24:19 +0100 | [diff] [blame] | 750 | * This function enables all the outputs with the new configuration which had to |
| 751 | * be turned off for the update. |
| 752 | * |
| 753 | * For compatability with legacy crtc helpers this should be called after |
| 754 | * drm_atomic_helper_commit_planes(), which is what the default commit function |
| 755 | * does. But drivers with different needs can group the modeset commits together |
| 756 | * and do the plane commits at the end. This is useful for drivers doing runtime |
| 757 | * PM since planes updates then only happen when the CRTC is actually enabled. |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 758 | */ |
Daniel Vetter | 1af434a | 2015-02-22 12:24:19 +0100 | [diff] [blame] | 759 | void drm_atomic_helper_commit_modeset_enables(struct drm_device *dev, |
| 760 | struct drm_atomic_state *old_state) |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 761 | { |
Ander Conselvan de Oliveira | df63b99 | 2015-04-10 14:58:39 +0300 | [diff] [blame] | 762 | struct drm_crtc *crtc; |
| 763 | struct drm_crtc_state *old_crtc_state; |
| 764 | struct drm_connector *connector; |
| 765 | struct drm_connector_state *old_conn_state; |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 766 | int i; |
| 767 | |
Ander Conselvan de Oliveira | df63b99 | 2015-04-10 14:58:39 +0300 | [diff] [blame] | 768 | for_each_crtc_in_state(old_state, crtc, old_crtc_state, i) { |
Ville Syrjälä | b5ceff2 | 2015-03-10 14:35:20 +0200 | [diff] [blame] | 769 | const struct drm_crtc_helper_funcs *funcs; |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 770 | |
| 771 | /* Need to filter out CRTCs where only planes change. */ |
Ander Conselvan de Oliveira | df63b99 | 2015-04-10 14:58:39 +0300 | [diff] [blame] | 772 | if (!needs_modeset(crtc->state)) |
Daniel Vetter | eab3bbe | 2015-01-22 16:36:21 +0100 | [diff] [blame] | 773 | continue; |
| 774 | |
| 775 | if (!crtc->state->active) |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 776 | continue; |
| 777 | |
| 778 | funcs = crtc->helper_private; |
| 779 | |
Daniel Vetter | ee0a89c | 2015-01-22 16:36:24 +0100 | [diff] [blame] | 780 | if (crtc->state->enable) { |
Daniel Vetter | 17a38d9 | 2015-02-22 12:24:16 +0100 | [diff] [blame] | 781 | DRM_DEBUG_ATOMIC("enabling [CRTC:%d]\n", |
| 782 | crtc->base.id); |
Daniel Vetter | 95d6eb3 | 2015-01-22 16:36:25 +0100 | [diff] [blame] | 783 | |
Daniel Vetter | ee0a89c | 2015-01-22 16:36:24 +0100 | [diff] [blame] | 784 | if (funcs->enable) |
| 785 | funcs->enable(crtc); |
| 786 | else |
| 787 | funcs->commit(crtc); |
| 788 | } |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 789 | } |
| 790 | |
Ander Conselvan de Oliveira | df63b99 | 2015-04-10 14:58:39 +0300 | [diff] [blame] | 791 | for_each_connector_in_state(old_state, connector, old_conn_state, i) { |
Ville Syrjälä | b5ceff2 | 2015-03-10 14:35:20 +0200 | [diff] [blame] | 792 | const struct drm_encoder_helper_funcs *funcs; |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 793 | struct drm_encoder *encoder; |
| 794 | |
Ander Conselvan de Oliveira | df63b99 | 2015-04-10 14:58:39 +0300 | [diff] [blame] | 795 | if (!connector->state->best_encoder) |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 796 | continue; |
| 797 | |
Daniel Vetter | 4218a32 | 2015-03-26 22:18:40 +0100 | [diff] [blame] | 798 | if (!connector->state->crtc->state->active || |
| 799 | !needs_modeset(connector->state->crtc->state)) |
Daniel Vetter | eab3bbe | 2015-01-22 16:36:21 +0100 | [diff] [blame] | 800 | continue; |
| 801 | |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 802 | encoder = connector->state->best_encoder; |
| 803 | funcs = encoder->helper_private; |
| 804 | |
Daniel Vetter | 17a38d9 | 2015-02-22 12:24:16 +0100 | [diff] [blame] | 805 | DRM_DEBUG_ATOMIC("enabling [ENCODER:%d:%s]\n", |
| 806 | encoder->base.id, encoder->name); |
Daniel Vetter | 95d6eb3 | 2015-01-22 16:36:25 +0100 | [diff] [blame] | 807 | |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 808 | /* |
| 809 | * Each encoder has at most one connector (since we always steal |
John Hunter | f98bd3e | 2015-03-17 15:30:26 +0800 | [diff] [blame] | 810 | * it away), so we won't call enable hooks twice. |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 811 | */ |
| 812 | if (encoder->bridge) |
| 813 | encoder->bridge->funcs->pre_enable(encoder->bridge); |
| 814 | |
Daniel Vetter | ee0a89c | 2015-01-22 16:36:24 +0100 | [diff] [blame] | 815 | if (funcs->enable) |
| 816 | funcs->enable(encoder); |
| 817 | else |
| 818 | funcs->commit(encoder); |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 819 | |
| 820 | if (encoder->bridge) |
| 821 | encoder->bridge->funcs->enable(encoder->bridge); |
| 822 | } |
| 823 | } |
Daniel Vetter | 1af434a | 2015-02-22 12:24:19 +0100 | [diff] [blame] | 824 | EXPORT_SYMBOL(drm_atomic_helper_commit_modeset_enables); |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 825 | |
Daniel Vetter | e2330f0 | 2014-10-29 11:34:56 +0100 | [diff] [blame] | 826 | static void wait_for_fences(struct drm_device *dev, |
| 827 | struct drm_atomic_state *state) |
| 828 | { |
Ander Conselvan de Oliveira | df63b99 | 2015-04-10 14:58:39 +0300 | [diff] [blame] | 829 | struct drm_plane *plane; |
| 830 | struct drm_plane_state *plane_state; |
Daniel Vetter | e2330f0 | 2014-10-29 11:34:56 +0100 | [diff] [blame] | 831 | int i; |
| 832 | |
Ander Conselvan de Oliveira | df63b99 | 2015-04-10 14:58:39 +0300 | [diff] [blame] | 833 | for_each_plane_in_state(state, plane, plane_state, i) { |
| 834 | if (!plane->state->fence) |
Daniel Vetter | e2330f0 | 2014-10-29 11:34:56 +0100 | [diff] [blame] | 835 | continue; |
| 836 | |
| 837 | WARN_ON(!plane->state->fb); |
| 838 | |
| 839 | fence_wait(plane->state->fence, false); |
| 840 | fence_put(plane->state->fence); |
| 841 | plane->state->fence = NULL; |
| 842 | } |
| 843 | } |
| 844 | |
Daniel Vetter | ab58e33 | 2014-11-24 20:42:42 +0100 | [diff] [blame] | 845 | static bool framebuffer_changed(struct drm_device *dev, |
| 846 | struct drm_atomic_state *old_state, |
| 847 | struct drm_crtc *crtc) |
| 848 | { |
| 849 | struct drm_plane *plane; |
| 850 | struct drm_plane_state *old_plane_state; |
Daniel Vetter | ab58e33 | 2014-11-24 20:42:42 +0100 | [diff] [blame] | 851 | int i; |
| 852 | |
Ander Conselvan de Oliveira | df63b99 | 2015-04-10 14:58:39 +0300 | [diff] [blame] | 853 | for_each_plane_in_state(old_state, plane, old_plane_state, i) { |
Daniel Vetter | ab58e33 | 2014-11-24 20:42:42 +0100 | [diff] [blame] | 854 | if (plane->state->crtc != crtc && |
| 855 | old_plane_state->crtc != crtc) |
| 856 | continue; |
| 857 | |
| 858 | if (plane->state->fb != old_plane_state->fb) |
| 859 | return true; |
| 860 | } |
| 861 | |
| 862 | return false; |
| 863 | } |
| 864 | |
Rob Clark | 5ee3229 | 2014-11-11 19:38:59 -0500 | [diff] [blame] | 865 | /** |
| 866 | * drm_atomic_helper_wait_for_vblanks - wait for vblank on crtcs |
| 867 | * @dev: DRM device |
| 868 | * @old_state: atomic state object with old state structures |
| 869 | * |
| 870 | * Helper to, after atomic commit, wait for vblanks on all effected |
| 871 | * crtcs (ie. before cleaning up old framebuffers using |
Daniel Vetter | ab58e33 | 2014-11-24 20:42:42 +0100 | [diff] [blame] | 872 | * drm_atomic_helper_cleanup_planes()). It will only wait on crtcs where the |
| 873 | * framebuffers have actually changed to optimize for the legacy cursor and |
| 874 | * plane update use-case. |
Rob Clark | 5ee3229 | 2014-11-11 19:38:59 -0500 | [diff] [blame] | 875 | */ |
| 876 | void |
| 877 | drm_atomic_helper_wait_for_vblanks(struct drm_device *dev, |
| 878 | struct drm_atomic_state *old_state) |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 879 | { |
| 880 | struct drm_crtc *crtc; |
| 881 | struct drm_crtc_state *old_crtc_state; |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 882 | int i, ret; |
| 883 | |
Ander Conselvan de Oliveira | df63b99 | 2015-04-10 14:58:39 +0300 | [diff] [blame] | 884 | for_each_crtc_in_state(old_state, crtc, old_crtc_state, i) { |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 885 | /* No one cares about the old state, so abuse it for tracking |
| 886 | * and store whether we hold a vblank reference (and should do a |
| 887 | * vblank wait) in the ->enable boolean. */ |
| 888 | old_crtc_state->enable = false; |
| 889 | |
| 890 | if (!crtc->state->enable) |
| 891 | continue; |
| 892 | |
Daniel Vetter | f02ad90 | 2015-01-22 16:36:23 +0100 | [diff] [blame] | 893 | /* Legacy cursor ioctls are completely unsynced, and userspace |
| 894 | * relies on that (by doing tons of cursor updates). */ |
| 895 | if (old_state->legacy_cursor_update) |
| 896 | continue; |
| 897 | |
Daniel Vetter | ab58e33 | 2014-11-24 20:42:42 +0100 | [diff] [blame] | 898 | if (!framebuffer_changed(dev, old_state, crtc)) |
| 899 | continue; |
| 900 | |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 901 | ret = drm_crtc_vblank_get(crtc); |
| 902 | if (ret != 0) |
| 903 | continue; |
| 904 | |
| 905 | old_crtc_state->enable = true; |
| 906 | old_crtc_state->last_vblank_count = drm_vblank_count(dev, i); |
| 907 | } |
| 908 | |
Ander Conselvan de Oliveira | df63b99 | 2015-04-10 14:58:39 +0300 | [diff] [blame] | 909 | for_each_crtc_in_state(old_state, crtc, old_crtc_state, i) { |
| 910 | if (!old_crtc_state->enable) |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 911 | continue; |
| 912 | |
| 913 | ret = wait_event_timeout(dev->vblank[i].queue, |
| 914 | old_crtc_state->last_vblank_count != |
| 915 | drm_vblank_count(dev, i), |
| 916 | msecs_to_jiffies(50)); |
| 917 | |
| 918 | drm_crtc_vblank_put(crtc); |
| 919 | } |
| 920 | } |
Rob Clark | 5ee3229 | 2014-11-11 19:38:59 -0500 | [diff] [blame] | 921 | EXPORT_SYMBOL(drm_atomic_helper_wait_for_vblanks); |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 922 | |
| 923 | /** |
| 924 | * drm_atomic_helper_commit - commit validated state object |
| 925 | * @dev: DRM device |
| 926 | * @state: the driver state object |
| 927 | * @async: asynchronous commit |
| 928 | * |
| 929 | * This function commits a with drm_atomic_helper_check() pre-validated state |
| 930 | * object. This can still fail when e.g. the framebuffer reservation fails. For |
| 931 | * now this doesn't implement asynchronous commits. |
| 932 | * |
| 933 | * RETURNS |
| 934 | * Zero for success or -errno. |
| 935 | */ |
| 936 | int drm_atomic_helper_commit(struct drm_device *dev, |
| 937 | struct drm_atomic_state *state, |
| 938 | bool async) |
| 939 | { |
| 940 | int ret; |
| 941 | |
| 942 | if (async) |
| 943 | return -EBUSY; |
| 944 | |
| 945 | ret = drm_atomic_helper_prepare_planes(dev, state); |
| 946 | if (ret) |
| 947 | return ret; |
| 948 | |
| 949 | /* |
| 950 | * This is the point of no return - everything below never fails except |
| 951 | * when the hw goes bonghits. Which means we can commit the new state on |
| 952 | * the software side now. |
| 953 | */ |
| 954 | |
| 955 | drm_atomic_helper_swap_state(dev, state); |
| 956 | |
| 957 | /* |
| 958 | * Everything below can be run asynchronously without the need to grab |
John Hunter | f98bd3e | 2015-03-17 15:30:26 +0800 | [diff] [blame] | 959 | * any modeset locks at all under one condition: It must be guaranteed |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 960 | * that the asynchronous work has either been cancelled (if the driver |
| 961 | * supports it, which at least requires that the framebuffers get |
| 962 | * cleaned up with drm_atomic_helper_cleanup_planes()) or completed |
| 963 | * before the new state gets committed on the software side with |
| 964 | * drm_atomic_helper_swap_state(). |
| 965 | * |
| 966 | * This scheme allows new atomic state updates to be prepared and |
| 967 | * checked in parallel to the asynchronous completion of the previous |
| 968 | * update. Which is important since compositors need to figure out the |
| 969 | * composition of the next frame right after having submitted the |
| 970 | * current layout. |
| 971 | */ |
| 972 | |
Daniel Vetter | e2330f0 | 2014-10-29 11:34:56 +0100 | [diff] [blame] | 973 | wait_for_fences(dev, state); |
| 974 | |
Daniel Vetter | 1af434a | 2015-02-22 12:24:19 +0100 | [diff] [blame] | 975 | drm_atomic_helper_commit_modeset_disables(dev, state); |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 976 | |
| 977 | drm_atomic_helper_commit_planes(dev, state); |
| 978 | |
Daniel Vetter | 1af434a | 2015-02-22 12:24:19 +0100 | [diff] [blame] | 979 | drm_atomic_helper_commit_modeset_enables(dev, state); |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 980 | |
Rob Clark | 5ee3229 | 2014-11-11 19:38:59 -0500 | [diff] [blame] | 981 | drm_atomic_helper_wait_for_vblanks(dev, state); |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 982 | |
| 983 | drm_atomic_helper_cleanup_planes(dev, state); |
| 984 | |
| 985 | drm_atomic_state_free(state); |
| 986 | |
| 987 | return 0; |
| 988 | } |
| 989 | EXPORT_SYMBOL(drm_atomic_helper_commit); |
| 990 | |
Daniel Vetter | c2fcd27 | 2014-11-05 00:14:14 +0100 | [diff] [blame] | 991 | /** |
Daniel Vetter | e8c833a | 2014-07-27 18:30:19 +0200 | [diff] [blame] | 992 | * DOC: implementing async commit |
| 993 | * |
| 994 | * For now the atomic helpers don't support async commit directly. If there is |
| 995 | * real need it could be added though, using the dma-buf fence infrastructure |
| 996 | * for generic synchronization with outstanding rendering. |
| 997 | * |
| 998 | * For now drivers have to implement async commit themselves, with the following |
| 999 | * sequence being the recommended one: |
| 1000 | * |
| 1001 | * 1. Run drm_atomic_helper_prepare_planes() first. This is the only function |
| 1002 | * which commit needs to call which can fail, so we want to run it first and |
| 1003 | * synchronously. |
| 1004 | * |
| 1005 | * 2. Synchronize with any outstanding asynchronous commit worker threads which |
| 1006 | * might be affected the new state update. This can be done by either cancelling |
| 1007 | * or flushing the work items, depending upon whether the driver can deal with |
| 1008 | * cancelled updates. Note that it is important to ensure that the framebuffer |
| 1009 | * cleanup is still done when cancelling. |
| 1010 | * |
| 1011 | * For sufficient parallelism it is recommended to have a work item per crtc |
| 1012 | * (for updates which don't touch global state) and a global one. Then we only |
| 1013 | * need to synchronize with the crtc work items for changed crtcs and the global |
| 1014 | * work item, which allows nice concurrent updates on disjoint sets of crtcs. |
| 1015 | * |
| 1016 | * 3. The software state is updated synchronously with |
| 1017 | * drm_atomic_helper_swap_state. Doing this under the protection of all modeset |
| 1018 | * locks means concurrent callers never see inconsistent state. And doing this |
| 1019 | * while it's guaranteed that no relevant async worker runs means that async |
| 1020 | * workers do not need grab any locks. Actually they must not grab locks, for |
| 1021 | * otherwise the work flushing will deadlock. |
| 1022 | * |
| 1023 | * 4. Schedule a work item to do all subsequent steps, using the split-out |
| 1024 | * commit helpers: a) pre-plane commit b) plane commit c) post-plane commit and |
| 1025 | * then cleaning up the framebuffers after the old framebuffer is no longer |
| 1026 | * being displayed. |
| 1027 | */ |
| 1028 | |
| 1029 | /** |
Daniel Vetter | 2e3afd4 | 2015-02-26 14:17:38 +0100 | [diff] [blame] | 1030 | * drm_atomic_helper_prepare_planes - prepare plane resources before commit |
Daniel Vetter | c2fcd27 | 2014-11-05 00:14:14 +0100 | [diff] [blame] | 1031 | * @dev: DRM device |
Daniel Vetter | 2e3afd4 | 2015-02-26 14:17:38 +0100 | [diff] [blame] | 1032 | * @state: atomic state object with new state structures |
Daniel Vetter | c2fcd27 | 2014-11-05 00:14:14 +0100 | [diff] [blame] | 1033 | * |
| 1034 | * This function prepares plane state, specifically framebuffers, for the new |
| 1035 | * configuration. If any failure is encountered this function will call |
| 1036 | * ->cleanup_fb on any already successfully prepared framebuffer. |
| 1037 | * |
| 1038 | * Returns: |
| 1039 | * 0 on success, negative error code on failure. |
| 1040 | */ |
| 1041 | int drm_atomic_helper_prepare_planes(struct drm_device *dev, |
| 1042 | struct drm_atomic_state *state) |
| 1043 | { |
| 1044 | int nplanes = dev->mode_config.num_total_plane; |
| 1045 | int ret, i; |
| 1046 | |
| 1047 | for (i = 0; i < nplanes; i++) { |
Ville Syrjälä | b5ceff2 | 2015-03-10 14:35:20 +0200 | [diff] [blame] | 1048 | const struct drm_plane_helper_funcs *funcs; |
Daniel Vetter | c2fcd27 | 2014-11-05 00:14:14 +0100 | [diff] [blame] | 1049 | struct drm_plane *plane = state->planes[i]; |
Tvrtko Ursulin | d136dfe | 2015-03-03 14:22:31 +0000 | [diff] [blame] | 1050 | struct drm_plane_state *plane_state = state->plane_states[i]; |
Daniel Vetter | c2fcd27 | 2014-11-05 00:14:14 +0100 | [diff] [blame] | 1051 | struct drm_framebuffer *fb; |
| 1052 | |
| 1053 | if (!plane) |
| 1054 | continue; |
| 1055 | |
| 1056 | funcs = plane->helper_private; |
| 1057 | |
Tvrtko Ursulin | d136dfe | 2015-03-03 14:22:31 +0000 | [diff] [blame] | 1058 | fb = plane_state->fb; |
Daniel Vetter | c2fcd27 | 2014-11-05 00:14:14 +0100 | [diff] [blame] | 1059 | |
| 1060 | if (fb && funcs->prepare_fb) { |
Tvrtko Ursulin | d136dfe | 2015-03-03 14:22:31 +0000 | [diff] [blame] | 1061 | ret = funcs->prepare_fb(plane, fb, plane_state); |
Daniel Vetter | c2fcd27 | 2014-11-05 00:14:14 +0100 | [diff] [blame] | 1062 | if (ret) |
| 1063 | goto fail; |
| 1064 | } |
| 1065 | } |
| 1066 | |
| 1067 | return 0; |
| 1068 | |
| 1069 | fail: |
| 1070 | for (i--; i >= 0; i--) { |
Ville Syrjälä | b5ceff2 | 2015-03-10 14:35:20 +0200 | [diff] [blame] | 1071 | const struct drm_plane_helper_funcs *funcs; |
Daniel Vetter | c2fcd27 | 2014-11-05 00:14:14 +0100 | [diff] [blame] | 1072 | struct drm_plane *plane = state->planes[i]; |
Tvrtko Ursulin | d136dfe | 2015-03-03 14:22:31 +0000 | [diff] [blame] | 1073 | struct drm_plane_state *plane_state = state->plane_states[i]; |
Daniel Vetter | c2fcd27 | 2014-11-05 00:14:14 +0100 | [diff] [blame] | 1074 | struct drm_framebuffer *fb; |
| 1075 | |
| 1076 | if (!plane) |
| 1077 | continue; |
| 1078 | |
| 1079 | funcs = plane->helper_private; |
| 1080 | |
| 1081 | fb = state->plane_states[i]->fb; |
| 1082 | |
| 1083 | if (fb && funcs->cleanup_fb) |
Tvrtko Ursulin | d136dfe | 2015-03-03 14:22:31 +0000 | [diff] [blame] | 1084 | funcs->cleanup_fb(plane, fb, plane_state); |
Daniel Vetter | c2fcd27 | 2014-11-05 00:14:14 +0100 | [diff] [blame] | 1085 | |
| 1086 | } |
| 1087 | |
| 1088 | return ret; |
| 1089 | } |
| 1090 | EXPORT_SYMBOL(drm_atomic_helper_prepare_planes); |
| 1091 | |
| 1092 | /** |
| 1093 | * drm_atomic_helper_commit_planes - commit plane state |
| 1094 | * @dev: DRM device |
Daniel Vetter | b0fcfc8 | 2014-11-19 18:38:11 +0100 | [diff] [blame] | 1095 | * @old_state: atomic state object with old state structures |
Daniel Vetter | c2fcd27 | 2014-11-05 00:14:14 +0100 | [diff] [blame] | 1096 | * |
| 1097 | * This function commits the new plane state using the plane and atomic helper |
| 1098 | * functions for planes and crtcs. It assumes that the atomic state has already |
| 1099 | * been pushed into the relevant object state pointers, since this step can no |
| 1100 | * longer fail. |
| 1101 | * |
Daniel Vetter | b0fcfc8 | 2014-11-19 18:38:11 +0100 | [diff] [blame] | 1102 | * It still requires the global state object @old_state to know which planes and |
Daniel Vetter | c2fcd27 | 2014-11-05 00:14:14 +0100 | [diff] [blame] | 1103 | * crtcs need to be updated though. |
| 1104 | */ |
| 1105 | void drm_atomic_helper_commit_planes(struct drm_device *dev, |
Daniel Vetter | b0fcfc8 | 2014-11-19 18:38:11 +0100 | [diff] [blame] | 1106 | struct drm_atomic_state *old_state) |
Daniel Vetter | c2fcd27 | 2014-11-05 00:14:14 +0100 | [diff] [blame] | 1107 | { |
Ander Conselvan de Oliveira | df63b99 | 2015-04-10 14:58:39 +0300 | [diff] [blame] | 1108 | struct drm_crtc *crtc; |
| 1109 | struct drm_crtc_state *old_crtc_state; |
| 1110 | struct drm_plane *plane; |
| 1111 | struct drm_plane_state *old_plane_state; |
Daniel Vetter | c2fcd27 | 2014-11-05 00:14:14 +0100 | [diff] [blame] | 1112 | int i; |
| 1113 | |
Ander Conselvan de Oliveira | df63b99 | 2015-04-10 14:58:39 +0300 | [diff] [blame] | 1114 | for_each_crtc_in_state(old_state, crtc, old_crtc_state, i) { |
Ville Syrjälä | b5ceff2 | 2015-03-10 14:35:20 +0200 | [diff] [blame] | 1115 | const struct drm_crtc_helper_funcs *funcs; |
Daniel Vetter | c2fcd27 | 2014-11-05 00:14:14 +0100 | [diff] [blame] | 1116 | |
| 1117 | funcs = crtc->helper_private; |
| 1118 | |
| 1119 | if (!funcs || !funcs->atomic_begin) |
| 1120 | continue; |
| 1121 | |
| 1122 | funcs->atomic_begin(crtc); |
| 1123 | } |
| 1124 | |
Ander Conselvan de Oliveira | df63b99 | 2015-04-10 14:58:39 +0300 | [diff] [blame] | 1125 | for_each_plane_in_state(old_state, plane, old_plane_state, i) { |
Ville Syrjälä | b5ceff2 | 2015-03-10 14:35:20 +0200 | [diff] [blame] | 1126 | const struct drm_plane_helper_funcs *funcs; |
Daniel Vetter | c2fcd27 | 2014-11-05 00:14:14 +0100 | [diff] [blame] | 1127 | |
| 1128 | funcs = plane->helper_private; |
| 1129 | |
Thierry Reding | 3cad4b6 | 2014-11-25 13:05:12 +0100 | [diff] [blame] | 1130 | if (!funcs) |
Daniel Vetter | c2fcd27 | 2014-11-05 00:14:14 +0100 | [diff] [blame] | 1131 | continue; |
| 1132 | |
Thierry Reding | f1c37e1 | 2014-11-25 12:09:44 +0100 | [diff] [blame] | 1133 | old_plane_state = old_state->plane_states[i]; |
| 1134 | |
Thierry Reding | 407b8bd | 2014-11-20 12:05:50 +0100 | [diff] [blame] | 1135 | /* |
| 1136 | * Special-case disabling the plane if drivers support it. |
| 1137 | */ |
| 1138 | if (drm_atomic_plane_disabling(plane, old_plane_state) && |
| 1139 | funcs->atomic_disable) |
| 1140 | funcs->atomic_disable(plane, old_plane_state); |
| 1141 | else |
| 1142 | funcs->atomic_update(plane, old_plane_state); |
Daniel Vetter | c2fcd27 | 2014-11-05 00:14:14 +0100 | [diff] [blame] | 1143 | } |
| 1144 | |
Ander Conselvan de Oliveira | df63b99 | 2015-04-10 14:58:39 +0300 | [diff] [blame] | 1145 | for_each_crtc_in_state(old_state, crtc, old_crtc_state, i) { |
Ville Syrjälä | b5ceff2 | 2015-03-10 14:35:20 +0200 | [diff] [blame] | 1146 | const struct drm_crtc_helper_funcs *funcs; |
Daniel Vetter | c2fcd27 | 2014-11-05 00:14:14 +0100 | [diff] [blame] | 1147 | |
| 1148 | funcs = crtc->helper_private; |
| 1149 | |
| 1150 | if (!funcs || !funcs->atomic_flush) |
| 1151 | continue; |
| 1152 | |
| 1153 | funcs->atomic_flush(crtc); |
| 1154 | } |
| 1155 | } |
| 1156 | EXPORT_SYMBOL(drm_atomic_helper_commit_planes); |
| 1157 | |
| 1158 | /** |
| 1159 | * drm_atomic_helper_cleanup_planes - cleanup plane resources after commit |
| 1160 | * @dev: DRM device |
| 1161 | * @old_state: atomic state object with old state structures |
| 1162 | * |
| 1163 | * This function cleans up plane state, specifically framebuffers, from the old |
| 1164 | * configuration. Hence the old configuration must be perserved in @old_state to |
| 1165 | * be able to call this function. |
| 1166 | * |
| 1167 | * This function must also be called on the new state when the atomic update |
| 1168 | * fails at any point after calling drm_atomic_helper_prepare_planes(). |
| 1169 | */ |
| 1170 | void drm_atomic_helper_cleanup_planes(struct drm_device *dev, |
| 1171 | struct drm_atomic_state *old_state) |
| 1172 | { |
Ander Conselvan de Oliveira | df63b99 | 2015-04-10 14:58:39 +0300 | [diff] [blame] | 1173 | struct drm_plane *plane; |
| 1174 | struct drm_plane_state *plane_state; |
Daniel Vetter | c2fcd27 | 2014-11-05 00:14:14 +0100 | [diff] [blame] | 1175 | int i; |
| 1176 | |
Ander Conselvan de Oliveira | df63b99 | 2015-04-10 14:58:39 +0300 | [diff] [blame] | 1177 | for_each_plane_in_state(old_state, plane, plane_state, i) { |
Ville Syrjälä | b5ceff2 | 2015-03-10 14:35:20 +0200 | [diff] [blame] | 1178 | const struct drm_plane_helper_funcs *funcs; |
Daniel Vetter | c2fcd27 | 2014-11-05 00:14:14 +0100 | [diff] [blame] | 1179 | struct drm_framebuffer *old_fb; |
| 1180 | |
Daniel Vetter | c2fcd27 | 2014-11-05 00:14:14 +0100 | [diff] [blame] | 1181 | funcs = plane->helper_private; |
| 1182 | |
Tvrtko Ursulin | d136dfe | 2015-03-03 14:22:31 +0000 | [diff] [blame] | 1183 | old_fb = plane_state->fb; |
Daniel Vetter | c2fcd27 | 2014-11-05 00:14:14 +0100 | [diff] [blame] | 1184 | |
| 1185 | if (old_fb && funcs->cleanup_fb) |
Tvrtko Ursulin | d136dfe | 2015-03-03 14:22:31 +0000 | [diff] [blame] | 1186 | funcs->cleanup_fb(plane, old_fb, plane_state); |
Daniel Vetter | c2fcd27 | 2014-11-05 00:14:14 +0100 | [diff] [blame] | 1187 | } |
| 1188 | } |
| 1189 | EXPORT_SYMBOL(drm_atomic_helper_cleanup_planes); |
| 1190 | |
| 1191 | /** |
| 1192 | * drm_atomic_helper_swap_state - store atomic state into current sw state |
| 1193 | * @dev: DRM device |
| 1194 | * @state: atomic state |
| 1195 | * |
| 1196 | * This function stores the atomic state into the current state pointers in all |
| 1197 | * driver objects. It should be called after all failing steps have been done |
| 1198 | * and succeeded, but before the actual hardware state is committed. |
| 1199 | * |
| 1200 | * For cleanup and error recovery the current state for all changed objects will |
| 1201 | * be swaped into @state. |
| 1202 | * |
| 1203 | * With that sequence it fits perfectly into the plane prepare/cleanup sequence: |
| 1204 | * |
| 1205 | * 1. Call drm_atomic_helper_prepare_planes() with the staged atomic state. |
| 1206 | * |
| 1207 | * 2. Do any other steps that might fail. |
| 1208 | * |
| 1209 | * 3. Put the staged state into the current state pointers with this function. |
| 1210 | * |
| 1211 | * 4. Actually commit the hardware state. |
| 1212 | * |
| 1213 | * 5. Call drm_atomic_helper_cleanup_planes with @state, which since step 3 |
| 1214 | * contains the old state. Also do any other cleanup required with that state. |
| 1215 | */ |
| 1216 | void drm_atomic_helper_swap_state(struct drm_device *dev, |
| 1217 | struct drm_atomic_state *state) |
| 1218 | { |
| 1219 | int i; |
| 1220 | |
| 1221 | for (i = 0; i < dev->mode_config.num_connector; i++) { |
| 1222 | struct drm_connector *connector = state->connectors[i]; |
| 1223 | |
| 1224 | if (!connector) |
| 1225 | continue; |
| 1226 | |
| 1227 | connector->state->state = state; |
| 1228 | swap(state->connector_states[i], connector->state); |
| 1229 | connector->state->state = NULL; |
| 1230 | } |
| 1231 | |
| 1232 | for (i = 0; i < dev->mode_config.num_crtc; i++) { |
| 1233 | struct drm_crtc *crtc = state->crtcs[i]; |
| 1234 | |
| 1235 | if (!crtc) |
| 1236 | continue; |
| 1237 | |
| 1238 | crtc->state->state = state; |
| 1239 | swap(state->crtc_states[i], crtc->state); |
| 1240 | crtc->state->state = NULL; |
| 1241 | } |
| 1242 | |
| 1243 | for (i = 0; i < dev->mode_config.num_total_plane; i++) { |
| 1244 | struct drm_plane *plane = state->planes[i]; |
| 1245 | |
| 1246 | if (!plane) |
| 1247 | continue; |
| 1248 | |
| 1249 | plane->state->state = state; |
| 1250 | swap(state->plane_states[i], plane->state); |
| 1251 | plane->state->state = NULL; |
| 1252 | } |
| 1253 | } |
| 1254 | EXPORT_SYMBOL(drm_atomic_helper_swap_state); |
Daniel Vetter | 042652e | 2014-07-27 13:46:52 +0200 | [diff] [blame] | 1255 | |
| 1256 | /** |
| 1257 | * drm_atomic_helper_update_plane - Helper for primary plane update using atomic |
| 1258 | * @plane: plane object to update |
| 1259 | * @crtc: owning CRTC of owning plane |
| 1260 | * @fb: framebuffer to flip onto plane |
| 1261 | * @crtc_x: x offset of primary plane on crtc |
| 1262 | * @crtc_y: y offset of primary plane on crtc |
| 1263 | * @crtc_w: width of primary plane rectangle on crtc |
| 1264 | * @crtc_h: height of primary plane rectangle on crtc |
| 1265 | * @src_x: x offset of @fb for panning |
| 1266 | * @src_y: y offset of @fb for panning |
| 1267 | * @src_w: width of source rectangle in @fb |
| 1268 | * @src_h: height of source rectangle in @fb |
| 1269 | * |
| 1270 | * Provides a default plane update handler using the atomic driver interface. |
| 1271 | * |
| 1272 | * RETURNS: |
| 1273 | * Zero on success, error code on failure |
| 1274 | */ |
| 1275 | int drm_atomic_helper_update_plane(struct drm_plane *plane, |
| 1276 | struct drm_crtc *crtc, |
| 1277 | struct drm_framebuffer *fb, |
| 1278 | int crtc_x, int crtc_y, |
| 1279 | unsigned int crtc_w, unsigned int crtc_h, |
| 1280 | uint32_t src_x, uint32_t src_y, |
| 1281 | uint32_t src_w, uint32_t src_h) |
| 1282 | { |
| 1283 | struct drm_atomic_state *state; |
| 1284 | struct drm_plane_state *plane_state; |
| 1285 | int ret = 0; |
| 1286 | |
| 1287 | state = drm_atomic_state_alloc(plane->dev); |
| 1288 | if (!state) |
| 1289 | return -ENOMEM; |
| 1290 | |
| 1291 | state->acquire_ctx = drm_modeset_legacy_acquire_ctx(crtc); |
| 1292 | retry: |
| 1293 | plane_state = drm_atomic_get_plane_state(state, plane); |
| 1294 | if (IS_ERR(plane_state)) { |
| 1295 | ret = PTR_ERR(plane_state); |
| 1296 | goto fail; |
| 1297 | } |
| 1298 | |
Daniel Vetter | 07cc0ef | 2014-11-27 15:49:39 +0100 | [diff] [blame] | 1299 | ret = drm_atomic_set_crtc_for_plane(plane_state, crtc); |
Daniel Vetter | 042652e | 2014-07-27 13:46:52 +0200 | [diff] [blame] | 1300 | if (ret != 0) |
| 1301 | goto fail; |
Daniel Vetter | 321ebf0 | 2014-11-04 22:57:27 +0100 | [diff] [blame] | 1302 | drm_atomic_set_fb_for_plane(plane_state, fb); |
Daniel Vetter | 042652e | 2014-07-27 13:46:52 +0200 | [diff] [blame] | 1303 | plane_state->crtc_x = crtc_x; |
| 1304 | plane_state->crtc_y = crtc_y; |
| 1305 | plane_state->crtc_h = crtc_h; |
| 1306 | plane_state->crtc_w = crtc_w; |
| 1307 | plane_state->src_x = src_x; |
| 1308 | plane_state->src_y = src_y; |
| 1309 | plane_state->src_h = src_h; |
| 1310 | plane_state->src_w = src_w; |
| 1311 | |
| 1312 | ret = drm_atomic_commit(state); |
| 1313 | if (ret != 0) |
| 1314 | goto fail; |
| 1315 | |
Daniel Vetter | f02ad90 | 2015-01-22 16:36:23 +0100 | [diff] [blame] | 1316 | if (plane == crtc->cursor) |
| 1317 | state->legacy_cursor_update = true; |
| 1318 | |
Daniel Vetter | 042652e | 2014-07-27 13:46:52 +0200 | [diff] [blame] | 1319 | /* Driver takes ownership of state on successful commit. */ |
| 1320 | return 0; |
| 1321 | fail: |
| 1322 | if (ret == -EDEADLK) |
| 1323 | goto backoff; |
| 1324 | |
| 1325 | drm_atomic_state_free(state); |
| 1326 | |
| 1327 | return ret; |
| 1328 | backoff: |
Daniel Vetter | 042652e | 2014-07-27 13:46:52 +0200 | [diff] [blame] | 1329 | drm_atomic_state_clear(state); |
Daniel Vetter | 6f75cea | 2014-11-19 18:38:07 +0100 | [diff] [blame] | 1330 | drm_atomic_legacy_backoff(state); |
Daniel Vetter | 042652e | 2014-07-27 13:46:52 +0200 | [diff] [blame] | 1331 | |
| 1332 | /* |
| 1333 | * Someone might have exchanged the framebuffer while we dropped locks |
| 1334 | * in the backoff code. We need to fix up the fb refcount tracking the |
| 1335 | * core does for us. |
| 1336 | */ |
| 1337 | plane->old_fb = plane->fb; |
| 1338 | |
| 1339 | goto retry; |
| 1340 | } |
| 1341 | EXPORT_SYMBOL(drm_atomic_helper_update_plane); |
| 1342 | |
| 1343 | /** |
| 1344 | * drm_atomic_helper_disable_plane - Helper for primary plane disable using * atomic |
| 1345 | * @plane: plane to disable |
| 1346 | * |
| 1347 | * Provides a default plane disable handler using the atomic driver interface. |
| 1348 | * |
| 1349 | * RETURNS: |
| 1350 | * Zero on success, error code on failure |
| 1351 | */ |
| 1352 | int drm_atomic_helper_disable_plane(struct drm_plane *plane) |
| 1353 | { |
| 1354 | struct drm_atomic_state *state; |
| 1355 | struct drm_plane_state *plane_state; |
| 1356 | int ret = 0; |
| 1357 | |
Jasper St. Pierre | aa54e2e | 2014-11-20 19:59:15 -0800 | [diff] [blame] | 1358 | /* |
| 1359 | * FIXME: Without plane->crtc set we can't get at the implicit legacy |
| 1360 | * acquire context. The real fix will be to wire the acquire ctx through |
| 1361 | * everywhere we need it, but meanwhile prevent chaos by just skipping |
| 1362 | * this noop. The critical case is the cursor ioctls which a) only grab |
| 1363 | * crtc/cursor-plane locks (so we need the crtc to get at the right |
| 1364 | * acquire context) and b) can try to disable the plane multiple times. |
| 1365 | */ |
| 1366 | if (!plane->crtc) |
| 1367 | return 0; |
| 1368 | |
Daniel Vetter | 042652e | 2014-07-27 13:46:52 +0200 | [diff] [blame] | 1369 | state = drm_atomic_state_alloc(plane->dev); |
| 1370 | if (!state) |
| 1371 | return -ENOMEM; |
| 1372 | |
| 1373 | state->acquire_ctx = drm_modeset_legacy_acquire_ctx(plane->crtc); |
| 1374 | retry: |
| 1375 | plane_state = drm_atomic_get_plane_state(state, plane); |
| 1376 | if (IS_ERR(plane_state)) { |
| 1377 | ret = PTR_ERR(plane_state); |
| 1378 | goto fail; |
| 1379 | } |
| 1380 | |
Daniel Vetter | 07cc0ef | 2014-11-27 15:49:39 +0100 | [diff] [blame] | 1381 | ret = drm_atomic_set_crtc_for_plane(plane_state, NULL); |
Daniel Vetter | 042652e | 2014-07-27 13:46:52 +0200 | [diff] [blame] | 1382 | if (ret != 0) |
| 1383 | goto fail; |
Daniel Vetter | 321ebf0 | 2014-11-04 22:57:27 +0100 | [diff] [blame] | 1384 | drm_atomic_set_fb_for_plane(plane_state, NULL); |
Daniel Vetter | 042652e | 2014-07-27 13:46:52 +0200 | [diff] [blame] | 1385 | plane_state->crtc_x = 0; |
| 1386 | plane_state->crtc_y = 0; |
| 1387 | plane_state->crtc_h = 0; |
| 1388 | plane_state->crtc_w = 0; |
| 1389 | plane_state->src_x = 0; |
| 1390 | plane_state->src_y = 0; |
| 1391 | plane_state->src_h = 0; |
| 1392 | plane_state->src_w = 0; |
| 1393 | |
Daniel Vetter | f02ad90 | 2015-01-22 16:36:23 +0100 | [diff] [blame] | 1394 | if (plane == plane->crtc->cursor) |
| 1395 | state->legacy_cursor_update = true; |
| 1396 | |
Daniel Vetter | 042652e | 2014-07-27 13:46:52 +0200 | [diff] [blame] | 1397 | ret = drm_atomic_commit(state); |
| 1398 | if (ret != 0) |
| 1399 | goto fail; |
| 1400 | |
| 1401 | /* Driver takes ownership of state on successful commit. */ |
| 1402 | return 0; |
| 1403 | fail: |
| 1404 | if (ret == -EDEADLK) |
| 1405 | goto backoff; |
| 1406 | |
| 1407 | drm_atomic_state_free(state); |
| 1408 | |
| 1409 | return ret; |
| 1410 | backoff: |
Daniel Vetter | 042652e | 2014-07-27 13:46:52 +0200 | [diff] [blame] | 1411 | drm_atomic_state_clear(state); |
Daniel Vetter | 6f75cea | 2014-11-19 18:38:07 +0100 | [diff] [blame] | 1412 | drm_atomic_legacy_backoff(state); |
Daniel Vetter | 042652e | 2014-07-27 13:46:52 +0200 | [diff] [blame] | 1413 | |
| 1414 | /* |
| 1415 | * Someone might have exchanged the framebuffer while we dropped locks |
| 1416 | * in the backoff code. We need to fix up the fb refcount tracking the |
| 1417 | * core does for us. |
| 1418 | */ |
| 1419 | plane->old_fb = plane->fb; |
| 1420 | |
| 1421 | goto retry; |
| 1422 | } |
| 1423 | EXPORT_SYMBOL(drm_atomic_helper_disable_plane); |
| 1424 | |
| 1425 | static int update_output_state(struct drm_atomic_state *state, |
| 1426 | struct drm_mode_set *set) |
| 1427 | { |
| 1428 | struct drm_device *dev = set->crtc->dev; |
Ander Conselvan de Oliveira | df63b99 | 2015-04-10 14:58:39 +0300 | [diff] [blame] | 1429 | struct drm_crtc *crtc; |
| 1430 | struct drm_crtc_state *crtc_state; |
| 1431 | struct drm_connector *connector; |
Daniel Vetter | 042652e | 2014-07-27 13:46:52 +0200 | [diff] [blame] | 1432 | struct drm_connector_state *conn_state; |
Daniel Vetter | 042652e | 2014-07-27 13:46:52 +0200 | [diff] [blame] | 1433 | int ret, i, j; |
| 1434 | |
| 1435 | ret = drm_modeset_lock(&dev->mode_config.connection_mutex, |
| 1436 | state->acquire_ctx); |
| 1437 | if (ret) |
| 1438 | return ret; |
| 1439 | |
| 1440 | /* First grab all affected connector/crtc states. */ |
| 1441 | for (i = 0; i < set->num_connectors; i++) { |
| 1442 | conn_state = drm_atomic_get_connector_state(state, |
| 1443 | set->connectors[i]); |
| 1444 | if (IS_ERR(conn_state)) |
| 1445 | return PTR_ERR(conn_state); |
| 1446 | } |
| 1447 | |
Ander Conselvan de Oliveira | df63b99 | 2015-04-10 14:58:39 +0300 | [diff] [blame] | 1448 | for_each_crtc_in_state(state, crtc, crtc_state, i) { |
Daniel Vetter | 042652e | 2014-07-27 13:46:52 +0200 | [diff] [blame] | 1449 | ret = drm_atomic_add_affected_connectors(state, crtc); |
| 1450 | if (ret) |
| 1451 | return ret; |
| 1452 | } |
| 1453 | |
| 1454 | /* Then recompute connector->crtc links and crtc enabling state. */ |
Ander Conselvan de Oliveira | df63b99 | 2015-04-10 14:58:39 +0300 | [diff] [blame] | 1455 | for_each_connector_in_state(state, connector, conn_state, i) { |
Daniel Vetter | 042652e | 2014-07-27 13:46:52 +0200 | [diff] [blame] | 1456 | if (conn_state->crtc == set->crtc) { |
| 1457 | ret = drm_atomic_set_crtc_for_connector(conn_state, |
| 1458 | NULL); |
| 1459 | if (ret) |
| 1460 | return ret; |
| 1461 | } |
| 1462 | |
| 1463 | for (j = 0; j < set->num_connectors; j++) { |
| 1464 | if (set->connectors[j] == connector) { |
| 1465 | ret = drm_atomic_set_crtc_for_connector(conn_state, |
| 1466 | set->crtc); |
| 1467 | if (ret) |
| 1468 | return ret; |
| 1469 | break; |
| 1470 | } |
| 1471 | } |
| 1472 | } |
| 1473 | |
Ander Conselvan de Oliveira | df63b99 | 2015-04-10 14:58:39 +0300 | [diff] [blame] | 1474 | for_each_crtc_in_state(state, crtc, crtc_state, i) { |
Daniel Vetter | 042652e | 2014-07-27 13:46:52 +0200 | [diff] [blame] | 1475 | /* Don't update ->enable for the CRTC in the set_config request, |
| 1476 | * since a mismatch would indicate a bug in the upper layers. |
| 1477 | * The actual modeset code later on will catch any |
| 1478 | * inconsistencies here. */ |
| 1479 | if (crtc == set->crtc) |
| 1480 | continue; |
| 1481 | |
| 1482 | crtc_state->enable = |
| 1483 | drm_atomic_connectors_for_crtc(state, crtc); |
| 1484 | } |
| 1485 | |
| 1486 | return 0; |
| 1487 | } |
| 1488 | |
| 1489 | /** |
| 1490 | * drm_atomic_helper_set_config - set a new config from userspace |
| 1491 | * @set: mode set configuration |
| 1492 | * |
| 1493 | * Provides a default crtc set_config handler using the atomic driver interface. |
| 1494 | * |
| 1495 | * Returns: |
| 1496 | * Returns 0 on success, negative errno numbers on failure. |
| 1497 | */ |
| 1498 | int drm_atomic_helper_set_config(struct drm_mode_set *set) |
| 1499 | { |
| 1500 | struct drm_atomic_state *state; |
| 1501 | struct drm_crtc *crtc = set->crtc; |
| 1502 | struct drm_crtc_state *crtc_state; |
| 1503 | struct drm_plane_state *primary_state; |
| 1504 | int ret = 0; |
| 1505 | |
| 1506 | state = drm_atomic_state_alloc(crtc->dev); |
| 1507 | if (!state) |
| 1508 | return -ENOMEM; |
| 1509 | |
| 1510 | state->acquire_ctx = drm_modeset_legacy_acquire_ctx(crtc); |
| 1511 | retry: |
| 1512 | crtc_state = drm_atomic_get_crtc_state(state, crtc); |
| 1513 | if (IS_ERR(crtc_state)) { |
| 1514 | ret = PTR_ERR(crtc_state); |
| 1515 | goto fail; |
| 1516 | } |
| 1517 | |
Rob Clark | e5b5341 | 2014-11-26 18:58:04 -0500 | [diff] [blame] | 1518 | primary_state = drm_atomic_get_plane_state(state, crtc->primary); |
| 1519 | if (IS_ERR(primary_state)) { |
| 1520 | ret = PTR_ERR(primary_state); |
| 1521 | goto fail; |
| 1522 | } |
| 1523 | |
Daniel Vetter | 042652e | 2014-07-27 13:46:52 +0200 | [diff] [blame] | 1524 | if (!set->mode) { |
| 1525 | WARN_ON(set->fb); |
| 1526 | WARN_ON(set->num_connectors); |
| 1527 | |
| 1528 | crtc_state->enable = false; |
Daniel Vetter | eab3bbe | 2015-01-22 16:36:21 +0100 | [diff] [blame] | 1529 | crtc_state->active = false; |
Rob Clark | e5b5341 | 2014-11-26 18:58:04 -0500 | [diff] [blame] | 1530 | |
Daniel Vetter | 07cc0ef | 2014-11-27 15:49:39 +0100 | [diff] [blame] | 1531 | ret = drm_atomic_set_crtc_for_plane(primary_state, NULL); |
Rob Clark | e5b5341 | 2014-11-26 18:58:04 -0500 | [diff] [blame] | 1532 | if (ret != 0) |
| 1533 | goto fail; |
| 1534 | |
| 1535 | drm_atomic_set_fb_for_plane(primary_state, NULL); |
| 1536 | |
Daniel Vetter | 042652e | 2014-07-27 13:46:52 +0200 | [diff] [blame] | 1537 | goto commit; |
| 1538 | } |
| 1539 | |
| 1540 | WARN_ON(!set->fb); |
| 1541 | WARN_ON(!set->num_connectors); |
| 1542 | |
| 1543 | crtc_state->enable = true; |
Daniel Vetter | eab3bbe | 2015-01-22 16:36:21 +0100 | [diff] [blame] | 1544 | crtc_state->active = true; |
Daniel Vetter | 042652e | 2014-07-27 13:46:52 +0200 | [diff] [blame] | 1545 | drm_mode_copy(&crtc_state->mode, set->mode); |
| 1546 | |
Daniel Vetter | 07cc0ef | 2014-11-27 15:49:39 +0100 | [diff] [blame] | 1547 | ret = drm_atomic_set_crtc_for_plane(primary_state, crtc); |
Daniel Vetter | 042652e | 2014-07-27 13:46:52 +0200 | [diff] [blame] | 1548 | if (ret != 0) |
| 1549 | goto fail; |
Daniel Vetter | 321ebf0 | 2014-11-04 22:57:27 +0100 | [diff] [blame] | 1550 | drm_atomic_set_fb_for_plane(primary_state, set->fb); |
Daniel Vetter | 042652e | 2014-07-27 13:46:52 +0200 | [diff] [blame] | 1551 | primary_state->crtc_x = 0; |
| 1552 | primary_state->crtc_y = 0; |
| 1553 | primary_state->crtc_h = set->mode->vdisplay; |
| 1554 | primary_state->crtc_w = set->mode->hdisplay; |
| 1555 | primary_state->src_x = set->x << 16; |
| 1556 | primary_state->src_y = set->y << 16; |
| 1557 | primary_state->src_h = set->mode->vdisplay << 16; |
| 1558 | primary_state->src_w = set->mode->hdisplay << 16; |
| 1559 | |
| 1560 | commit: |
| 1561 | ret = update_output_state(state, set); |
| 1562 | if (ret) |
| 1563 | goto fail; |
| 1564 | |
| 1565 | ret = drm_atomic_commit(state); |
| 1566 | if (ret != 0) |
| 1567 | goto fail; |
| 1568 | |
| 1569 | /* Driver takes ownership of state on successful commit. */ |
| 1570 | return 0; |
| 1571 | fail: |
| 1572 | if (ret == -EDEADLK) |
| 1573 | goto backoff; |
| 1574 | |
| 1575 | drm_atomic_state_free(state); |
| 1576 | |
| 1577 | return ret; |
| 1578 | backoff: |
Daniel Vetter | 042652e | 2014-07-27 13:46:52 +0200 | [diff] [blame] | 1579 | drm_atomic_state_clear(state); |
Daniel Vetter | 6f75cea | 2014-11-19 18:38:07 +0100 | [diff] [blame] | 1580 | drm_atomic_legacy_backoff(state); |
Daniel Vetter | 042652e | 2014-07-27 13:46:52 +0200 | [diff] [blame] | 1581 | |
| 1582 | /* |
| 1583 | * Someone might have exchanged the framebuffer while we dropped locks |
| 1584 | * in the backoff code. We need to fix up the fb refcount tracking the |
| 1585 | * core does for us. |
| 1586 | */ |
| 1587 | crtc->primary->old_fb = crtc->primary->fb; |
| 1588 | |
| 1589 | goto retry; |
| 1590 | } |
| 1591 | EXPORT_SYMBOL(drm_atomic_helper_set_config); |
| 1592 | |
| 1593 | /** |
Laurent Pinchart | 7f50002 | 2015-02-23 02:50:23 +0200 | [diff] [blame] | 1594 | * drm_atomic_helper_crtc_set_property - helper for crtc properties |
Daniel Vetter | 042652e | 2014-07-27 13:46:52 +0200 | [diff] [blame] | 1595 | * @crtc: DRM crtc |
| 1596 | * @property: DRM property |
| 1597 | * @val: value of property |
| 1598 | * |
Laurent Pinchart | 7f50002 | 2015-02-23 02:50:23 +0200 | [diff] [blame] | 1599 | * Provides a default crtc set_property handler using the atomic driver |
| 1600 | * interface. |
Daniel Vetter | 042652e | 2014-07-27 13:46:52 +0200 | [diff] [blame] | 1601 | * |
| 1602 | * RETURNS: |
| 1603 | * Zero on success, error code on failure |
| 1604 | */ |
| 1605 | int |
| 1606 | drm_atomic_helper_crtc_set_property(struct drm_crtc *crtc, |
| 1607 | struct drm_property *property, |
| 1608 | uint64_t val) |
| 1609 | { |
| 1610 | struct drm_atomic_state *state; |
| 1611 | struct drm_crtc_state *crtc_state; |
| 1612 | int ret = 0; |
| 1613 | |
| 1614 | state = drm_atomic_state_alloc(crtc->dev); |
| 1615 | if (!state) |
| 1616 | return -ENOMEM; |
| 1617 | |
| 1618 | /* ->set_property is always called with all locks held. */ |
| 1619 | state->acquire_ctx = crtc->dev->mode_config.acquire_ctx; |
| 1620 | retry: |
| 1621 | crtc_state = drm_atomic_get_crtc_state(state, crtc); |
| 1622 | if (IS_ERR(crtc_state)) { |
| 1623 | ret = PTR_ERR(crtc_state); |
| 1624 | goto fail; |
| 1625 | } |
| 1626 | |
Rob Clark | 40ecc69 | 2014-12-18 16:01:46 -0500 | [diff] [blame] | 1627 | ret = drm_atomic_crtc_set_property(crtc, crtc_state, |
| 1628 | property, val); |
Daniel Vetter | 042652e | 2014-07-27 13:46:52 +0200 | [diff] [blame] | 1629 | if (ret) |
| 1630 | goto fail; |
| 1631 | |
| 1632 | ret = drm_atomic_commit(state); |
| 1633 | if (ret != 0) |
| 1634 | goto fail; |
| 1635 | |
| 1636 | /* Driver takes ownership of state on successful commit. */ |
| 1637 | return 0; |
| 1638 | fail: |
| 1639 | if (ret == -EDEADLK) |
| 1640 | goto backoff; |
| 1641 | |
| 1642 | drm_atomic_state_free(state); |
| 1643 | |
| 1644 | return ret; |
| 1645 | backoff: |
Daniel Vetter | 042652e | 2014-07-27 13:46:52 +0200 | [diff] [blame] | 1646 | drm_atomic_state_clear(state); |
Daniel Vetter | 6f75cea | 2014-11-19 18:38:07 +0100 | [diff] [blame] | 1647 | drm_atomic_legacy_backoff(state); |
Daniel Vetter | 042652e | 2014-07-27 13:46:52 +0200 | [diff] [blame] | 1648 | |
| 1649 | goto retry; |
| 1650 | } |
| 1651 | EXPORT_SYMBOL(drm_atomic_helper_crtc_set_property); |
| 1652 | |
| 1653 | /** |
Laurent Pinchart | 7f50002 | 2015-02-23 02:50:23 +0200 | [diff] [blame] | 1654 | * drm_atomic_helper_plane_set_property - helper for plane properties |
Daniel Vetter | 042652e | 2014-07-27 13:46:52 +0200 | [diff] [blame] | 1655 | * @plane: DRM plane |
| 1656 | * @property: DRM property |
| 1657 | * @val: value of property |
| 1658 | * |
Laurent Pinchart | 7f50002 | 2015-02-23 02:50:23 +0200 | [diff] [blame] | 1659 | * Provides a default plane set_property handler using the atomic driver |
| 1660 | * interface. |
Daniel Vetter | 042652e | 2014-07-27 13:46:52 +0200 | [diff] [blame] | 1661 | * |
| 1662 | * RETURNS: |
| 1663 | * Zero on success, error code on failure |
| 1664 | */ |
| 1665 | int |
| 1666 | drm_atomic_helper_plane_set_property(struct drm_plane *plane, |
| 1667 | struct drm_property *property, |
| 1668 | uint64_t val) |
| 1669 | { |
| 1670 | struct drm_atomic_state *state; |
| 1671 | struct drm_plane_state *plane_state; |
| 1672 | int ret = 0; |
| 1673 | |
| 1674 | state = drm_atomic_state_alloc(plane->dev); |
| 1675 | if (!state) |
| 1676 | return -ENOMEM; |
| 1677 | |
| 1678 | /* ->set_property is always called with all locks held. */ |
| 1679 | state->acquire_ctx = plane->dev->mode_config.acquire_ctx; |
| 1680 | retry: |
| 1681 | plane_state = drm_atomic_get_plane_state(state, plane); |
| 1682 | if (IS_ERR(plane_state)) { |
| 1683 | ret = PTR_ERR(plane_state); |
| 1684 | goto fail; |
| 1685 | } |
| 1686 | |
Rob Clark | 40ecc69 | 2014-12-18 16:01:46 -0500 | [diff] [blame] | 1687 | ret = drm_atomic_plane_set_property(plane, plane_state, |
| 1688 | property, val); |
Daniel Vetter | 042652e | 2014-07-27 13:46:52 +0200 | [diff] [blame] | 1689 | if (ret) |
| 1690 | goto fail; |
| 1691 | |
| 1692 | ret = drm_atomic_commit(state); |
| 1693 | if (ret != 0) |
| 1694 | goto fail; |
| 1695 | |
| 1696 | /* Driver takes ownership of state on successful commit. */ |
| 1697 | return 0; |
| 1698 | fail: |
| 1699 | if (ret == -EDEADLK) |
| 1700 | goto backoff; |
| 1701 | |
| 1702 | drm_atomic_state_free(state); |
| 1703 | |
| 1704 | return ret; |
| 1705 | backoff: |
Daniel Vetter | 042652e | 2014-07-27 13:46:52 +0200 | [diff] [blame] | 1706 | drm_atomic_state_clear(state); |
Daniel Vetter | 6f75cea | 2014-11-19 18:38:07 +0100 | [diff] [blame] | 1707 | drm_atomic_legacy_backoff(state); |
Daniel Vetter | 042652e | 2014-07-27 13:46:52 +0200 | [diff] [blame] | 1708 | |
| 1709 | goto retry; |
| 1710 | } |
| 1711 | EXPORT_SYMBOL(drm_atomic_helper_plane_set_property); |
| 1712 | |
| 1713 | /** |
Laurent Pinchart | 7f50002 | 2015-02-23 02:50:23 +0200 | [diff] [blame] | 1714 | * drm_atomic_helper_connector_set_property - helper for connector properties |
Daniel Vetter | 042652e | 2014-07-27 13:46:52 +0200 | [diff] [blame] | 1715 | * @connector: DRM connector |
| 1716 | * @property: DRM property |
| 1717 | * @val: value of property |
| 1718 | * |
Laurent Pinchart | 7f50002 | 2015-02-23 02:50:23 +0200 | [diff] [blame] | 1719 | * Provides a default connector set_property handler using the atomic driver |
| 1720 | * interface. |
Daniel Vetter | 042652e | 2014-07-27 13:46:52 +0200 | [diff] [blame] | 1721 | * |
| 1722 | * RETURNS: |
| 1723 | * Zero on success, error code on failure |
| 1724 | */ |
| 1725 | int |
| 1726 | drm_atomic_helper_connector_set_property(struct drm_connector *connector, |
| 1727 | struct drm_property *property, |
| 1728 | uint64_t val) |
| 1729 | { |
| 1730 | struct drm_atomic_state *state; |
| 1731 | struct drm_connector_state *connector_state; |
| 1732 | int ret = 0; |
| 1733 | |
| 1734 | state = drm_atomic_state_alloc(connector->dev); |
| 1735 | if (!state) |
| 1736 | return -ENOMEM; |
| 1737 | |
| 1738 | /* ->set_property is always called with all locks held. */ |
| 1739 | state->acquire_ctx = connector->dev->mode_config.acquire_ctx; |
| 1740 | retry: |
| 1741 | connector_state = drm_atomic_get_connector_state(state, connector); |
| 1742 | if (IS_ERR(connector_state)) { |
| 1743 | ret = PTR_ERR(connector_state); |
| 1744 | goto fail; |
| 1745 | } |
| 1746 | |
Rob Clark | 40ecc69 | 2014-12-18 16:01:46 -0500 | [diff] [blame] | 1747 | ret = drm_atomic_connector_set_property(connector, connector_state, |
| 1748 | property, val); |
Daniel Vetter | 042652e | 2014-07-27 13:46:52 +0200 | [diff] [blame] | 1749 | if (ret) |
| 1750 | goto fail; |
| 1751 | |
| 1752 | ret = drm_atomic_commit(state); |
| 1753 | if (ret != 0) |
| 1754 | goto fail; |
| 1755 | |
| 1756 | /* Driver takes ownership of state on successful commit. */ |
| 1757 | return 0; |
| 1758 | fail: |
| 1759 | if (ret == -EDEADLK) |
| 1760 | goto backoff; |
| 1761 | |
| 1762 | drm_atomic_state_free(state); |
| 1763 | |
| 1764 | return ret; |
| 1765 | backoff: |
Daniel Vetter | 042652e | 2014-07-27 13:46:52 +0200 | [diff] [blame] | 1766 | drm_atomic_state_clear(state); |
Daniel Vetter | 6f75cea | 2014-11-19 18:38:07 +0100 | [diff] [blame] | 1767 | drm_atomic_legacy_backoff(state); |
Daniel Vetter | 042652e | 2014-07-27 13:46:52 +0200 | [diff] [blame] | 1768 | |
| 1769 | goto retry; |
| 1770 | } |
| 1771 | EXPORT_SYMBOL(drm_atomic_helper_connector_set_property); |
Daniel Vetter | 8bc0f31 | 2014-07-27 18:42:37 +0200 | [diff] [blame] | 1772 | |
| 1773 | /** |
| 1774 | * drm_atomic_helper_page_flip - execute a legacy page flip |
| 1775 | * @crtc: DRM crtc |
| 1776 | * @fb: DRM framebuffer |
| 1777 | * @event: optional DRM event to signal upon completion |
| 1778 | * @flags: flip flags for non-vblank sync'ed updates |
| 1779 | * |
| 1780 | * Provides a default page flip implementation using the atomic driver interface. |
| 1781 | * |
| 1782 | * Note that for now so called async page flips (i.e. updates which are not |
| 1783 | * synchronized to vblank) are not supported, since the atomic interfaces have |
| 1784 | * no provisions for this yet. |
| 1785 | * |
| 1786 | * Returns: |
| 1787 | * Returns 0 on success, negative errno numbers on failure. |
| 1788 | */ |
| 1789 | int drm_atomic_helper_page_flip(struct drm_crtc *crtc, |
| 1790 | struct drm_framebuffer *fb, |
| 1791 | struct drm_pending_vblank_event *event, |
| 1792 | uint32_t flags) |
| 1793 | { |
| 1794 | struct drm_plane *plane = crtc->primary; |
| 1795 | struct drm_atomic_state *state; |
| 1796 | struct drm_plane_state *plane_state; |
| 1797 | struct drm_crtc_state *crtc_state; |
| 1798 | int ret = 0; |
| 1799 | |
| 1800 | if (flags & DRM_MODE_PAGE_FLIP_ASYNC) |
| 1801 | return -EINVAL; |
| 1802 | |
| 1803 | state = drm_atomic_state_alloc(plane->dev); |
| 1804 | if (!state) |
| 1805 | return -ENOMEM; |
| 1806 | |
| 1807 | state->acquire_ctx = drm_modeset_legacy_acquire_ctx(crtc); |
| 1808 | retry: |
| 1809 | crtc_state = drm_atomic_get_crtc_state(state, crtc); |
| 1810 | if (IS_ERR(crtc_state)) { |
| 1811 | ret = PTR_ERR(crtc_state); |
| 1812 | goto fail; |
| 1813 | } |
| 1814 | crtc_state->event = event; |
| 1815 | |
| 1816 | plane_state = drm_atomic_get_plane_state(state, plane); |
| 1817 | if (IS_ERR(plane_state)) { |
| 1818 | ret = PTR_ERR(plane_state); |
| 1819 | goto fail; |
| 1820 | } |
| 1821 | |
Daniel Vetter | 07cc0ef | 2014-11-27 15:49:39 +0100 | [diff] [blame] | 1822 | ret = drm_atomic_set_crtc_for_plane(plane_state, crtc); |
Daniel Vetter | 8bc0f31 | 2014-07-27 18:42:37 +0200 | [diff] [blame] | 1823 | if (ret != 0) |
| 1824 | goto fail; |
Daniel Vetter | 321ebf0 | 2014-11-04 22:57:27 +0100 | [diff] [blame] | 1825 | drm_atomic_set_fb_for_plane(plane_state, fb); |
Daniel Vetter | 8bc0f31 | 2014-07-27 18:42:37 +0200 | [diff] [blame] | 1826 | |
| 1827 | ret = drm_atomic_async_commit(state); |
| 1828 | if (ret != 0) |
| 1829 | goto fail; |
| 1830 | |
| 1831 | /* TODO: ->page_flip is the only driver callback where the core |
| 1832 | * doesn't update plane->fb. For now patch it up here. */ |
| 1833 | plane->fb = plane->state->fb; |
| 1834 | |
| 1835 | /* Driver takes ownership of state on successful async commit. */ |
| 1836 | return 0; |
| 1837 | fail: |
| 1838 | if (ret == -EDEADLK) |
| 1839 | goto backoff; |
| 1840 | |
| 1841 | drm_atomic_state_free(state); |
| 1842 | |
| 1843 | return ret; |
| 1844 | backoff: |
Daniel Vetter | 8bc0f31 | 2014-07-27 18:42:37 +0200 | [diff] [blame] | 1845 | drm_atomic_state_clear(state); |
Daniel Vetter | 6f75cea | 2014-11-19 18:38:07 +0100 | [diff] [blame] | 1846 | drm_atomic_legacy_backoff(state); |
Daniel Vetter | 8bc0f31 | 2014-07-27 18:42:37 +0200 | [diff] [blame] | 1847 | |
| 1848 | /* |
| 1849 | * Someone might have exchanged the framebuffer while we dropped locks |
| 1850 | * in the backoff code. We need to fix up the fb refcount tracking the |
| 1851 | * core does for us. |
| 1852 | */ |
| 1853 | plane->old_fb = plane->fb; |
| 1854 | |
| 1855 | goto retry; |
| 1856 | } |
| 1857 | EXPORT_SYMBOL(drm_atomic_helper_page_flip); |
Daniel Vetter | d461701 | 2014-11-03 15:56:43 +0100 | [diff] [blame] | 1858 | |
| 1859 | /** |
Daniel Vetter | b486e0e | 2015-01-22 18:53:05 +0100 | [diff] [blame] | 1860 | * drm_atomic_helper_connector_dpms() - connector dpms helper implementation |
| 1861 | * @connector: affected connector |
| 1862 | * @mode: DPMS mode |
| 1863 | * |
| 1864 | * This is the main helper function provided by the atomic helper framework for |
| 1865 | * implementing the legacy DPMS connector interface. It computes the new desired |
| 1866 | * ->active state for the corresponding CRTC (if the connector is enabled) and |
| 1867 | * updates it. |
| 1868 | */ |
| 1869 | void drm_atomic_helper_connector_dpms(struct drm_connector *connector, |
| 1870 | int mode) |
| 1871 | { |
| 1872 | struct drm_mode_config *config = &connector->dev->mode_config; |
| 1873 | struct drm_atomic_state *state; |
| 1874 | struct drm_crtc_state *crtc_state; |
| 1875 | struct drm_crtc *crtc; |
| 1876 | struct drm_connector *tmp_connector; |
| 1877 | int ret; |
| 1878 | bool active = false; |
| 1879 | |
| 1880 | if (mode != DRM_MODE_DPMS_ON) |
| 1881 | mode = DRM_MODE_DPMS_OFF; |
| 1882 | |
| 1883 | connector->dpms = mode; |
| 1884 | crtc = connector->state->crtc; |
| 1885 | |
| 1886 | if (!crtc) |
| 1887 | return; |
| 1888 | |
| 1889 | /* FIXME: ->dpms has no return value so can't forward the -ENOMEM. */ |
| 1890 | state = drm_atomic_state_alloc(connector->dev); |
| 1891 | if (!state) |
| 1892 | return; |
| 1893 | |
| 1894 | state->acquire_ctx = drm_modeset_legacy_acquire_ctx(crtc); |
| 1895 | retry: |
| 1896 | crtc_state = drm_atomic_get_crtc_state(state, crtc); |
| 1897 | if (IS_ERR(crtc_state)) |
| 1898 | return; |
| 1899 | |
| 1900 | WARN_ON(!drm_modeset_is_locked(&config->connection_mutex)); |
| 1901 | |
| 1902 | list_for_each_entry(tmp_connector, &config->connector_list, head) { |
John Hunter | 0388df0 | 2015-03-17 15:30:28 +0800 | [diff] [blame] | 1903 | if (tmp_connector->state->crtc != crtc) |
Daniel Vetter | b486e0e | 2015-01-22 18:53:05 +0100 | [diff] [blame] | 1904 | continue; |
| 1905 | |
John Hunter | 0388df0 | 2015-03-17 15:30:28 +0800 | [diff] [blame] | 1906 | if (tmp_connector->dpms == DRM_MODE_DPMS_ON) { |
Daniel Vetter | b486e0e | 2015-01-22 18:53:05 +0100 | [diff] [blame] | 1907 | active = true; |
| 1908 | break; |
| 1909 | } |
| 1910 | } |
| 1911 | crtc_state->active = active; |
| 1912 | |
| 1913 | ret = drm_atomic_commit(state); |
| 1914 | if (ret != 0) |
| 1915 | goto fail; |
| 1916 | |
| 1917 | /* Driver takes ownership of state on successful async commit. */ |
| 1918 | return; |
| 1919 | fail: |
| 1920 | if (ret == -EDEADLK) |
| 1921 | goto backoff; |
| 1922 | |
| 1923 | drm_atomic_state_free(state); |
| 1924 | |
| 1925 | WARN(1, "Driver bug: Changing ->active failed with ret=%i\n", ret); |
| 1926 | |
| 1927 | return; |
| 1928 | backoff: |
| 1929 | drm_atomic_state_clear(state); |
| 1930 | drm_atomic_legacy_backoff(state); |
| 1931 | |
| 1932 | goto retry; |
| 1933 | } |
| 1934 | EXPORT_SYMBOL(drm_atomic_helper_connector_dpms); |
| 1935 | |
| 1936 | /** |
Daniel Vetter | 3150c7d | 2014-11-06 20:53:29 +0100 | [diff] [blame] | 1937 | * DOC: atomic state reset and initialization |
| 1938 | * |
| 1939 | * Both the drm core and the atomic helpers assume that there is always the full |
| 1940 | * and correct atomic software state for all connectors, CRTCs and planes |
| 1941 | * available. Which is a bit a problem on driver load and also after system |
| 1942 | * suspend. One way to solve this is to have a hardware state read-out |
| 1943 | * infrastructure which reconstructs the full software state (e.g. the i915 |
| 1944 | * driver). |
| 1945 | * |
| 1946 | * The simpler solution is to just reset the software state to everything off, |
| 1947 | * which is easiest to do by calling drm_mode_config_reset(). To facilitate this |
| 1948 | * the atomic helpers provide default reset implementations for all hooks. |
| 1949 | */ |
| 1950 | |
| 1951 | /** |
Daniel Vetter | d461701 | 2014-11-03 15:56:43 +0100 | [diff] [blame] | 1952 | * drm_atomic_helper_crtc_reset - default ->reset hook for CRTCs |
| 1953 | * @crtc: drm CRTC |
| 1954 | * |
| 1955 | * Resets the atomic state for @crtc by freeing the state pointer (which might |
| 1956 | * be NULL, e.g. at driver load time) and allocating a new empty state object. |
| 1957 | */ |
| 1958 | void drm_atomic_helper_crtc_reset(struct drm_crtc *crtc) |
| 1959 | { |
| 1960 | kfree(crtc->state); |
| 1961 | crtc->state = kzalloc(sizeof(*crtc->state), GFP_KERNEL); |
Daniel Vetter | 07cc0ef | 2014-11-27 15:49:39 +0100 | [diff] [blame] | 1962 | |
| 1963 | if (crtc->state) |
| 1964 | crtc->state->crtc = crtc; |
Daniel Vetter | d461701 | 2014-11-03 15:56:43 +0100 | [diff] [blame] | 1965 | } |
| 1966 | EXPORT_SYMBOL(drm_atomic_helper_crtc_reset); |
| 1967 | |
| 1968 | /** |
Thierry Reding | f5e7840 | 2015-01-28 14:54:32 +0100 | [diff] [blame] | 1969 | * __drm_atomic_helper_crtc_duplicate_state - copy atomic CRTC state |
| 1970 | * @crtc: CRTC object |
| 1971 | * @state: atomic CRTC state |
| 1972 | * |
| 1973 | * Copies atomic state from a CRTC's current state and resets inferred values. |
| 1974 | * This is useful for drivers that subclass the CRTC state. |
| 1975 | */ |
| 1976 | void __drm_atomic_helper_crtc_duplicate_state(struct drm_crtc *crtc, |
| 1977 | struct drm_crtc_state *state) |
| 1978 | { |
| 1979 | memcpy(state, crtc->state, sizeof(*state)); |
| 1980 | |
| 1981 | state->mode_changed = false; |
| 1982 | state->active_changed = false; |
| 1983 | state->planes_changed = false; |
| 1984 | state->event = NULL; |
| 1985 | } |
| 1986 | EXPORT_SYMBOL(__drm_atomic_helper_crtc_duplicate_state); |
| 1987 | |
| 1988 | /** |
Daniel Vetter | d461701 | 2014-11-03 15:56:43 +0100 | [diff] [blame] | 1989 | * drm_atomic_helper_crtc_duplicate_state - default state duplicate hook |
| 1990 | * @crtc: drm CRTC |
| 1991 | * |
| 1992 | * Default CRTC state duplicate hook for drivers which don't have their own |
| 1993 | * subclassed CRTC state structure. |
| 1994 | */ |
| 1995 | struct drm_crtc_state * |
| 1996 | drm_atomic_helper_crtc_duplicate_state(struct drm_crtc *crtc) |
| 1997 | { |
| 1998 | struct drm_crtc_state *state; |
| 1999 | |
| 2000 | if (WARN_ON(!crtc->state)) |
| 2001 | return NULL; |
| 2002 | |
Thierry Reding | f5e7840 | 2015-01-28 14:54:32 +0100 | [diff] [blame] | 2003 | state = kmalloc(sizeof(*state), GFP_KERNEL); |
| 2004 | if (state) |
| 2005 | __drm_atomic_helper_crtc_duplicate_state(crtc, state); |
Daniel Vetter | d461701 | 2014-11-03 15:56:43 +0100 | [diff] [blame] | 2006 | |
| 2007 | return state; |
| 2008 | } |
| 2009 | EXPORT_SYMBOL(drm_atomic_helper_crtc_duplicate_state); |
| 2010 | |
| 2011 | /** |
Thierry Reding | f5e7840 | 2015-01-28 14:54:32 +0100 | [diff] [blame] | 2012 | * __drm_atomic_helper_crtc_destroy_state - release CRTC state |
| 2013 | * @crtc: CRTC object |
| 2014 | * @state: CRTC state object to release |
| 2015 | * |
| 2016 | * Releases all resources stored in the CRTC state without actually freeing |
| 2017 | * the memory of the CRTC state. This is useful for drivers that subclass the |
| 2018 | * CRTC state. |
| 2019 | */ |
| 2020 | void __drm_atomic_helper_crtc_destroy_state(struct drm_crtc *crtc, |
| 2021 | struct drm_crtc_state *state) |
| 2022 | { |
| 2023 | /* |
| 2024 | * This is currently a placeholder so that drivers that subclass the |
| 2025 | * state will automatically do the right thing if code is ever added |
| 2026 | * to this function. |
| 2027 | */ |
| 2028 | } |
| 2029 | EXPORT_SYMBOL(__drm_atomic_helper_crtc_destroy_state); |
| 2030 | |
| 2031 | /** |
Daniel Vetter | d461701 | 2014-11-03 15:56:43 +0100 | [diff] [blame] | 2032 | * drm_atomic_helper_crtc_destroy_state - default state destroy hook |
| 2033 | * @crtc: drm CRTC |
| 2034 | * @state: CRTC state object to release |
| 2035 | * |
| 2036 | * Default CRTC state destroy hook for drivers which don't have their own |
| 2037 | * subclassed CRTC state structure. |
| 2038 | */ |
| 2039 | void drm_atomic_helper_crtc_destroy_state(struct drm_crtc *crtc, |
| 2040 | struct drm_crtc_state *state) |
| 2041 | { |
Thierry Reding | f5e7840 | 2015-01-28 14:54:32 +0100 | [diff] [blame] | 2042 | __drm_atomic_helper_crtc_destroy_state(crtc, state); |
Daniel Vetter | d461701 | 2014-11-03 15:56:43 +0100 | [diff] [blame] | 2043 | kfree(state); |
| 2044 | } |
| 2045 | EXPORT_SYMBOL(drm_atomic_helper_crtc_destroy_state); |
| 2046 | |
| 2047 | /** |
| 2048 | * drm_atomic_helper_plane_reset - default ->reset hook for planes |
| 2049 | * @plane: drm plane |
| 2050 | * |
| 2051 | * Resets the atomic state for @plane by freeing the state pointer (which might |
| 2052 | * be NULL, e.g. at driver load time) and allocating a new empty state object. |
| 2053 | */ |
| 2054 | void drm_atomic_helper_plane_reset(struct drm_plane *plane) |
| 2055 | { |
Daniel Vetter | 321ebf0 | 2014-11-04 22:57:27 +0100 | [diff] [blame] | 2056 | if (plane->state && plane->state->fb) |
| 2057 | drm_framebuffer_unreference(plane->state->fb); |
| 2058 | |
Daniel Vetter | d461701 | 2014-11-03 15:56:43 +0100 | [diff] [blame] | 2059 | kfree(plane->state); |
| 2060 | plane->state = kzalloc(sizeof(*plane->state), GFP_KERNEL); |
Daniel Vetter | 07cc0ef | 2014-11-27 15:49:39 +0100 | [diff] [blame] | 2061 | |
| 2062 | if (plane->state) |
| 2063 | plane->state->plane = plane; |
Daniel Vetter | d461701 | 2014-11-03 15:56:43 +0100 | [diff] [blame] | 2064 | } |
| 2065 | EXPORT_SYMBOL(drm_atomic_helper_plane_reset); |
| 2066 | |
| 2067 | /** |
Thierry Reding | f5e7840 | 2015-01-28 14:54:32 +0100 | [diff] [blame] | 2068 | * __drm_atomic_helper_plane_duplicate_state - copy atomic plane state |
| 2069 | * @plane: plane object |
| 2070 | * @state: atomic plane state |
| 2071 | * |
| 2072 | * Copies atomic state from a plane's current state. This is useful for |
| 2073 | * drivers that subclass the plane state. |
| 2074 | */ |
| 2075 | void __drm_atomic_helper_plane_duplicate_state(struct drm_plane *plane, |
| 2076 | struct drm_plane_state *state) |
| 2077 | { |
| 2078 | memcpy(state, plane->state, sizeof(*state)); |
| 2079 | |
| 2080 | if (state->fb) |
| 2081 | drm_framebuffer_reference(state->fb); |
| 2082 | } |
| 2083 | EXPORT_SYMBOL(__drm_atomic_helper_plane_duplicate_state); |
| 2084 | |
| 2085 | /** |
Daniel Vetter | d461701 | 2014-11-03 15:56:43 +0100 | [diff] [blame] | 2086 | * drm_atomic_helper_plane_duplicate_state - default state duplicate hook |
| 2087 | * @plane: drm plane |
| 2088 | * |
| 2089 | * Default plane state duplicate hook for drivers which don't have their own |
| 2090 | * subclassed plane state structure. |
| 2091 | */ |
| 2092 | struct drm_plane_state * |
| 2093 | drm_atomic_helper_plane_duplicate_state(struct drm_plane *plane) |
| 2094 | { |
Daniel Vetter | 321ebf0 | 2014-11-04 22:57:27 +0100 | [diff] [blame] | 2095 | struct drm_plane_state *state; |
| 2096 | |
Daniel Vetter | d461701 | 2014-11-03 15:56:43 +0100 | [diff] [blame] | 2097 | if (WARN_ON(!plane->state)) |
| 2098 | return NULL; |
| 2099 | |
Thierry Reding | f5e7840 | 2015-01-28 14:54:32 +0100 | [diff] [blame] | 2100 | state = kmalloc(sizeof(*state), GFP_KERNEL); |
| 2101 | if (state) |
| 2102 | __drm_atomic_helper_plane_duplicate_state(plane, state); |
Daniel Vetter | 321ebf0 | 2014-11-04 22:57:27 +0100 | [diff] [blame] | 2103 | |
| 2104 | return state; |
Daniel Vetter | d461701 | 2014-11-03 15:56:43 +0100 | [diff] [blame] | 2105 | } |
| 2106 | EXPORT_SYMBOL(drm_atomic_helper_plane_duplicate_state); |
| 2107 | |
| 2108 | /** |
Thierry Reding | f5e7840 | 2015-01-28 14:54:32 +0100 | [diff] [blame] | 2109 | * __drm_atomic_helper_plane_destroy_state - release plane state |
| 2110 | * @plane: plane object |
| 2111 | * @state: plane state object to release |
| 2112 | * |
| 2113 | * Releases all resources stored in the plane state without actually freeing |
| 2114 | * the memory of the plane state. This is useful for drivers that subclass the |
| 2115 | * plane state. |
| 2116 | */ |
| 2117 | void __drm_atomic_helper_plane_destroy_state(struct drm_plane *plane, |
| 2118 | struct drm_plane_state *state) |
| 2119 | { |
| 2120 | if (state->fb) |
| 2121 | drm_framebuffer_unreference(state->fb); |
| 2122 | } |
| 2123 | EXPORT_SYMBOL(__drm_atomic_helper_plane_destroy_state); |
| 2124 | |
| 2125 | /** |
Daniel Vetter | d461701 | 2014-11-03 15:56:43 +0100 | [diff] [blame] | 2126 | * drm_atomic_helper_plane_destroy_state - default state destroy hook |
| 2127 | * @plane: drm plane |
| 2128 | * @state: plane state object to release |
| 2129 | * |
| 2130 | * Default plane state destroy hook for drivers which don't have their own |
| 2131 | * subclassed plane state structure. |
| 2132 | */ |
| 2133 | void drm_atomic_helper_plane_destroy_state(struct drm_plane *plane, |
Daniel Vetter | 321ebf0 | 2014-11-04 22:57:27 +0100 | [diff] [blame] | 2134 | struct drm_plane_state *state) |
Daniel Vetter | d461701 | 2014-11-03 15:56:43 +0100 | [diff] [blame] | 2135 | { |
Thierry Reding | f5e7840 | 2015-01-28 14:54:32 +0100 | [diff] [blame] | 2136 | __drm_atomic_helper_plane_destroy_state(plane, state); |
Daniel Vetter | d461701 | 2014-11-03 15:56:43 +0100 | [diff] [blame] | 2137 | kfree(state); |
| 2138 | } |
| 2139 | EXPORT_SYMBOL(drm_atomic_helper_plane_destroy_state); |
| 2140 | |
| 2141 | /** |
| 2142 | * drm_atomic_helper_connector_reset - default ->reset hook for connectors |
| 2143 | * @connector: drm connector |
| 2144 | * |
| 2145 | * Resets the atomic state for @connector by freeing the state pointer (which |
| 2146 | * might be NULL, e.g. at driver load time) and allocating a new empty state |
| 2147 | * object. |
| 2148 | */ |
| 2149 | void drm_atomic_helper_connector_reset(struct drm_connector *connector) |
| 2150 | { |
| 2151 | kfree(connector->state); |
| 2152 | connector->state = kzalloc(sizeof(*connector->state), GFP_KERNEL); |
Daniel Vetter | 07cc0ef | 2014-11-27 15:49:39 +0100 | [diff] [blame] | 2153 | |
| 2154 | if (connector->state) |
| 2155 | connector->state->connector = connector; |
Daniel Vetter | d461701 | 2014-11-03 15:56:43 +0100 | [diff] [blame] | 2156 | } |
| 2157 | EXPORT_SYMBOL(drm_atomic_helper_connector_reset); |
| 2158 | |
| 2159 | /** |
Thierry Reding | f5e7840 | 2015-01-28 14:54:32 +0100 | [diff] [blame] | 2160 | * __drm_atomic_helper_connector_duplicate_state - copy atomic connector state |
| 2161 | * @connector: connector object |
| 2162 | * @state: atomic connector state |
| 2163 | * |
| 2164 | * Copies atomic state from a connector's current state. This is useful for |
| 2165 | * drivers that subclass the connector state. |
| 2166 | */ |
| 2167 | void |
| 2168 | __drm_atomic_helper_connector_duplicate_state(struct drm_connector *connector, |
| 2169 | struct drm_connector_state *state) |
| 2170 | { |
| 2171 | memcpy(state, connector->state, sizeof(*state)); |
| 2172 | } |
| 2173 | EXPORT_SYMBOL(__drm_atomic_helper_connector_duplicate_state); |
| 2174 | |
| 2175 | /** |
Daniel Vetter | d461701 | 2014-11-03 15:56:43 +0100 | [diff] [blame] | 2176 | * drm_atomic_helper_connector_duplicate_state - default state duplicate hook |
| 2177 | * @connector: drm connector |
| 2178 | * |
| 2179 | * Default connector state duplicate hook for drivers which don't have their own |
| 2180 | * subclassed connector state structure. |
| 2181 | */ |
| 2182 | struct drm_connector_state * |
| 2183 | drm_atomic_helper_connector_duplicate_state(struct drm_connector *connector) |
| 2184 | { |
Thierry Reding | f5e7840 | 2015-01-28 14:54:32 +0100 | [diff] [blame] | 2185 | struct drm_connector_state *state; |
| 2186 | |
Daniel Vetter | d461701 | 2014-11-03 15:56:43 +0100 | [diff] [blame] | 2187 | if (WARN_ON(!connector->state)) |
| 2188 | return NULL; |
| 2189 | |
Thierry Reding | f5e7840 | 2015-01-28 14:54:32 +0100 | [diff] [blame] | 2190 | state = kmalloc(sizeof(*state), GFP_KERNEL); |
| 2191 | if (state) |
| 2192 | __drm_atomic_helper_connector_duplicate_state(connector, state); |
| 2193 | |
| 2194 | return state; |
Daniel Vetter | d461701 | 2014-11-03 15:56:43 +0100 | [diff] [blame] | 2195 | } |
| 2196 | EXPORT_SYMBOL(drm_atomic_helper_connector_duplicate_state); |
| 2197 | |
| 2198 | /** |
Thierry Reding | f5e7840 | 2015-01-28 14:54:32 +0100 | [diff] [blame] | 2199 | * __drm_atomic_helper_connector_destroy_state - release connector state |
| 2200 | * @connector: connector object |
| 2201 | * @state: connector state object to release |
| 2202 | * |
| 2203 | * Releases all resources stored in the connector state without actually |
| 2204 | * freeing the memory of the connector state. This is useful for drivers that |
| 2205 | * subclass the connector state. |
| 2206 | */ |
| 2207 | void |
| 2208 | __drm_atomic_helper_connector_destroy_state(struct drm_connector *connector, |
| 2209 | struct drm_connector_state *state) |
| 2210 | { |
| 2211 | /* |
| 2212 | * This is currently a placeholder so that drivers that subclass the |
| 2213 | * state will automatically do the right thing if code is ever added |
| 2214 | * to this function. |
| 2215 | */ |
| 2216 | } |
| 2217 | EXPORT_SYMBOL(__drm_atomic_helper_connector_destroy_state); |
| 2218 | |
| 2219 | /** |
Daniel Vetter | d461701 | 2014-11-03 15:56:43 +0100 | [diff] [blame] | 2220 | * drm_atomic_helper_connector_destroy_state - default state destroy hook |
| 2221 | * @connector: drm connector |
| 2222 | * @state: connector state object to release |
| 2223 | * |
| 2224 | * Default connector state destroy hook for drivers which don't have their own |
| 2225 | * subclassed connector state structure. |
| 2226 | */ |
| 2227 | void drm_atomic_helper_connector_destroy_state(struct drm_connector *connector, |
| 2228 | struct drm_connector_state *state) |
| 2229 | { |
Thierry Reding | f5e7840 | 2015-01-28 14:54:32 +0100 | [diff] [blame] | 2230 | __drm_atomic_helper_connector_destroy_state(connector, state); |
Daniel Vetter | d461701 | 2014-11-03 15:56:43 +0100 | [diff] [blame] | 2231 | kfree(state); |
| 2232 | } |
| 2233 | EXPORT_SYMBOL(drm_atomic_helper_connector_destroy_state); |