Commit | Line | Data |
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c2fcd274 DV |
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> | |
623369e5 | 32 | #include <drm/drm_atomic_helper.h> |
f54d1867 | 33 | #include <linux/dma-fence.h> |
c2fcd274 | 34 | |
faf94a08 | 35 | #include "drm_crtc_helper_internal.h" |
44d1240d MS |
36 | #include "drm_crtc_internal.h" |
37 | ||
3150c7d0 DV |
38 | /** |
39 | * DOC: overview | |
40 | * | |
41 | * This helper library provides implementations of check and commit functions on | |
42 | * top of the CRTC modeset helper callbacks and the plane helper callbacks. It | |
43 | * also provides convenience implementations for the atomic state handling | |
44 | * callbacks for drivers which don't need to subclass the drm core structures to | |
45 | * add their own additional internal state. | |
46 | * | |
47 | * This library also provides default implementations for the check callback in | |
26196f7e DV |
48 | * drm_atomic_helper_check() and for the commit callback with |
49 | * drm_atomic_helper_commit(). But the individual stages and callbacks are | |
50 | * exposed to allow drivers to mix and match and e.g. use the plane helpers only | |
3150c7d0 DV |
51 | * together with a driver private modeset implementation. |
52 | * | |
53 | * This library also provides implementations for all the legacy driver | |
26196f7e DV |
54 | * interfaces on top of the atomic interface. See drm_atomic_helper_set_config(), |
55 | * drm_atomic_helper_disable_plane(), drm_atomic_helper_disable_plane() and the | |
3150c7d0 DV |
56 | * various functions to implement set_property callbacks. New drivers must not |
57 | * implement these functions themselves but must use the provided helpers. | |
092d01da DV |
58 | * |
59 | * The atomic helper uses the same function table structures as all other | |
ea0dd85a DV |
60 | * modesetting helpers. See the documentation for &struct drm_crtc_helper_funcs, |
61 | * struct &drm_encoder_helper_funcs and &struct drm_connector_helper_funcs. It | |
62 | * also shares the &struct drm_plane_helper_funcs function table with the plane | |
092d01da | 63 | * helpers. |
3150c7d0 | 64 | */ |
c2fcd274 DV |
65 | static void |
66 | drm_atomic_helper_plane_changed(struct drm_atomic_state *state, | |
415c3ac3 | 67 | struct drm_plane_state *old_plane_state, |
c2fcd274 DV |
68 | struct drm_plane_state *plane_state, |
69 | struct drm_plane *plane) | |
70 | { | |
71 | struct drm_crtc_state *crtc_state; | |
72 | ||
415c3ac3 | 73 | if (old_plane_state->crtc) { |
b4d93679 ML |
74 | crtc_state = drm_atomic_get_new_crtc_state(state, |
75 | old_plane_state->crtc); | |
c2fcd274 DV |
76 | |
77 | if (WARN_ON(!crtc_state)) | |
78 | return; | |
79 | ||
80 | crtc_state->planes_changed = true; | |
81 | } | |
82 | ||
83 | if (plane_state->crtc) { | |
b4d93679 | 84 | crtc_state = drm_atomic_get_new_crtc_state(state, plane_state->crtc); |
c2fcd274 DV |
85 | |
86 | if (WARN_ON(!crtc_state)) | |
87 | return; | |
88 | ||
89 | crtc_state->planes_changed = true; | |
90 | } | |
91 | } | |
92 | ||
8248b65d ML |
93 | static int handle_conflicting_encoders(struct drm_atomic_state *state, |
94 | bool disable_conflicting_encoders) | |
97ac3204 | 95 | { |
415c3ac3 | 96 | struct drm_connector_state *new_conn_state; |
40616a26 | 97 | struct drm_connector *connector; |
c36a3254 | 98 | struct drm_connector_list_iter conn_iter; |
40616a26 ML |
99 | struct drm_encoder *encoder; |
100 | unsigned encoder_mask = 0; | |
c36a3254 | 101 | int i, ret = 0; |
97ac3204 | 102 | |
8248b65d ML |
103 | /* |
104 | * First loop, find all newly assigned encoders from the connectors | |
105 | * part of the state. If the same encoder is assigned to multiple | |
106 | * connectors bail out. | |
107 | */ | |
415c3ac3 | 108 | for_each_new_connector_in_state(state, connector, new_conn_state, i) { |
40616a26 ML |
109 | const struct drm_connector_helper_funcs *funcs = connector->helper_private; |
110 | struct drm_encoder *new_encoder; | |
111 | ||
415c3ac3 | 112 | if (!new_conn_state->crtc) |
97ac3204 DV |
113 | continue; |
114 | ||
40616a26 | 115 | if (funcs->atomic_best_encoder) |
415c3ac3 | 116 | new_encoder = funcs->atomic_best_encoder(connector, new_conn_state); |
a0909cc5 | 117 | else if (funcs->best_encoder) |
40616a26 | 118 | new_encoder = funcs->best_encoder(connector); |
a0909cc5 BB |
119 | else |
120 | new_encoder = drm_atomic_helper_best_encoder(connector); | |
40616a26 | 121 | |
8248b65d ML |
122 | if (new_encoder) { |
123 | if (encoder_mask & (1 << drm_encoder_index(new_encoder))) { | |
124 | DRM_DEBUG_ATOMIC("[ENCODER:%d:%s] on [CONNECTOR:%d:%s] already assigned\n", | |
125 | new_encoder->base.id, new_encoder->name, | |
126 | connector->base.id, connector->name); | |
127 | ||
128 | return -EINVAL; | |
129 | } | |
130 | ||
40616a26 | 131 | encoder_mask |= 1 << drm_encoder_index(new_encoder); |
8248b65d | 132 | } |
97ac3204 DV |
133 | } |
134 | ||
8248b65d ML |
135 | if (!encoder_mask) |
136 | return 0; | |
97ac3204 | 137 | |
8248b65d ML |
138 | /* |
139 | * Second loop, iterate over all connectors not part of the state. | |
140 | * | |
141 | * If a conflicting encoder is found and disable_conflicting_encoders | |
142 | * is not set, an error is returned. Userspace can provide a solution | |
143 | * through the atomic ioctl. | |
144 | * | |
145 | * If the flag is set conflicting connectors are removed from the crtc | |
146 | * and the crtc is disabled if no encoder is left. This preserves | |
147 | * compatibility with the legacy set_config behavior. | |
148 | */ | |
b982dab1 | 149 | drm_connector_list_iter_begin(state->dev, &conn_iter); |
c36a3254 | 150 | drm_for_each_connector_iter(connector, &conn_iter) { |
40616a26 | 151 | struct drm_crtc_state *crtc_state; |
623369e5 | 152 | |
b4d93679 | 153 | if (drm_atomic_get_new_connector_state(state, connector)) |
40616a26 | 154 | continue; |
623369e5 | 155 | |
40616a26 ML |
156 | encoder = connector->state->best_encoder; |
157 | if (!encoder || !(encoder_mask & (1 << drm_encoder_index(encoder)))) | |
623369e5 DV |
158 | continue; |
159 | ||
8248b65d ML |
160 | if (!disable_conflicting_encoders) { |
161 | DRM_DEBUG_ATOMIC("[ENCODER:%d:%s] in use on [CRTC:%d:%s] by [CONNECTOR:%d:%s]\n", | |
162 | encoder->base.id, encoder->name, | |
163 | connector->state->crtc->base.id, | |
164 | connector->state->crtc->name, | |
165 | connector->base.id, connector->name); | |
c36a3254 DV |
166 | ret = -EINVAL; |
167 | goto out; | |
8248b65d ML |
168 | } |
169 | ||
415c3ac3 ML |
170 | new_conn_state = drm_atomic_get_connector_state(state, connector); |
171 | if (IS_ERR(new_conn_state)) { | |
172 | ret = PTR_ERR(new_conn_state); | |
c36a3254 DV |
173 | goto out; |
174 | } | |
40616a26 ML |
175 | |
176 | DRM_DEBUG_ATOMIC("[ENCODER:%d:%s] in use on [CRTC:%d:%s], disabling [CONNECTOR:%d:%s]\n", | |
177 | encoder->base.id, encoder->name, | |
415c3ac3 | 178 | new_conn_state->crtc->base.id, new_conn_state->crtc->name, |
40616a26 ML |
179 | connector->base.id, connector->name); |
180 | ||
b4d93679 | 181 | crtc_state = drm_atomic_get_new_crtc_state(state, new_conn_state->crtc); |
40616a26 | 182 | |
415c3ac3 | 183 | ret = drm_atomic_set_crtc_for_connector(new_conn_state, NULL); |
40616a26 | 184 | if (ret) |
c36a3254 | 185 | goto out; |
40616a26 ML |
186 | |
187 | if (!crtc_state->connector_mask) { | |
188 | ret = drm_atomic_set_mode_prop_for_crtc(crtc_state, | |
189 | NULL); | |
190 | if (ret < 0) | |
c36a3254 | 191 | goto out; |
40616a26 ML |
192 | |
193 | crtc_state->active = false; | |
194 | } | |
623369e5 | 195 | } |
c36a3254 | 196 | out: |
b982dab1 | 197 | drm_connector_list_iter_end(&conn_iter); |
623369e5 | 198 | |
c36a3254 | 199 | return ret; |
623369e5 DV |
200 | } |
201 | ||
e87a52b3 ML |
202 | static void |
203 | set_best_encoder(struct drm_atomic_state *state, | |
204 | struct drm_connector_state *conn_state, | |
205 | struct drm_encoder *encoder) | |
206 | { | |
207 | struct drm_crtc_state *crtc_state; | |
208 | struct drm_crtc *crtc; | |
209 | ||
210 | if (conn_state->best_encoder) { | |
211 | /* Unset the encoder_mask in the old crtc state. */ | |
212 | crtc = conn_state->connector->state->crtc; | |
213 | ||
214 | /* A NULL crtc is an error here because we should have | |
215 | * duplicated a NULL best_encoder when crtc was NULL. | |
216 | * As an exception restoring duplicated atomic state | |
217 | * during resume is allowed, so don't warn when | |
218 | * best_encoder is equal to encoder we intend to set. | |
219 | */ | |
220 | WARN_ON(!crtc && encoder != conn_state->best_encoder); | |
221 | if (crtc) { | |
b4d93679 | 222 | crtc_state = drm_atomic_get_new_crtc_state(state, crtc); |
e87a52b3 ML |
223 | |
224 | crtc_state->encoder_mask &= | |
225 | ~(1 << drm_encoder_index(conn_state->best_encoder)); | |
226 | } | |
227 | } | |
228 | ||
229 | if (encoder) { | |
230 | crtc = conn_state->crtc; | |
231 | WARN_ON(!crtc); | |
232 | if (crtc) { | |
b4d93679 | 233 | crtc_state = drm_atomic_get_new_crtc_state(state, crtc); |
e87a52b3 ML |
234 | |
235 | crtc_state->encoder_mask |= | |
236 | 1 << drm_encoder_index(encoder); | |
237 | } | |
238 | } | |
239 | ||
240 | conn_state->best_encoder = encoder; | |
241 | } | |
242 | ||
ec5aaa58 | 243 | static void |
623369e5 | 244 | steal_encoder(struct drm_atomic_state *state, |
ff19b786 | 245 | struct drm_encoder *encoder) |
623369e5 | 246 | { |
623369e5 DV |
247 | struct drm_crtc_state *crtc_state; |
248 | struct drm_connector *connector; | |
415c3ac3 | 249 | struct drm_connector_state *old_connector_state, *new_connector_state; |
ec5aaa58 | 250 | int i; |
623369e5 | 251 | |
415c3ac3 | 252 | for_each_oldnew_connector_in_state(state, connector, old_connector_state, new_connector_state, i) { |
ff19b786 | 253 | struct drm_crtc *encoder_crtc; |
623369e5 | 254 | |
415c3ac3 | 255 | if (new_connector_state->best_encoder != encoder) |
623369e5 DV |
256 | continue; |
257 | ||
415c3ac3 | 258 | encoder_crtc = old_connector_state->crtc; |
623369e5 | 259 | |
ff19b786 ML |
260 | DRM_DEBUG_ATOMIC("[ENCODER:%d:%s] in use on [CRTC:%d:%s], stealing it\n", |
261 | encoder->base.id, encoder->name, | |
262 | encoder_crtc->base.id, encoder_crtc->name); | |
e87a52b3 | 263 | |
415c3ac3 | 264 | set_best_encoder(state, new_connector_state, NULL); |
623369e5 | 265 | |
b4d93679 | 266 | crtc_state = drm_atomic_get_new_crtc_state(state, encoder_crtc); |
ff19b786 ML |
267 | crtc_state->connectors_changed = true; |
268 | ||
ec5aaa58 | 269 | return; |
623369e5 | 270 | } |
623369e5 DV |
271 | } |
272 | ||
273 | static int | |
9459545b ML |
274 | update_connector_routing(struct drm_atomic_state *state, |
275 | struct drm_connector *connector, | |
415c3ac3 ML |
276 | struct drm_connector_state *old_connector_state, |
277 | struct drm_connector_state *new_connector_state) | |
623369e5 | 278 | { |
b5ceff20 | 279 | const struct drm_connector_helper_funcs *funcs; |
623369e5 | 280 | struct drm_encoder *new_encoder; |
623369e5 | 281 | struct drm_crtc_state *crtc_state; |
623369e5 | 282 | |
17a38d9c DV |
283 | DRM_DEBUG_ATOMIC("Updating routing for [CONNECTOR:%d:%s]\n", |
284 | connector->base.id, | |
285 | connector->name); | |
623369e5 | 286 | |
415c3ac3 ML |
287 | if (old_connector_state->crtc != new_connector_state->crtc) { |
288 | if (old_connector_state->crtc) { | |
b4d93679 | 289 | crtc_state = drm_atomic_get_new_crtc_state(state, old_connector_state->crtc); |
fc596660 | 290 | crtc_state->connectors_changed = true; |
623369e5 DV |
291 | } |
292 | ||
415c3ac3 | 293 | if (new_connector_state->crtc) { |
b4d93679 | 294 | crtc_state = drm_atomic_get_new_crtc_state(state, new_connector_state->crtc); |
fc596660 | 295 | crtc_state->connectors_changed = true; |
623369e5 DV |
296 | } |
297 | } | |
298 | ||
415c3ac3 | 299 | if (!new_connector_state->crtc) { |
17a38d9c | 300 | DRM_DEBUG_ATOMIC("Disabling [CONNECTOR:%d:%s]\n", |
623369e5 DV |
301 | connector->base.id, |
302 | connector->name); | |
303 | ||
415c3ac3 | 304 | set_best_encoder(state, new_connector_state, NULL); |
623369e5 DV |
305 | |
306 | return 0; | |
307 | } | |
308 | ||
309 | funcs = connector->helper_private; | |
3b8a684b DV |
310 | |
311 | if (funcs->atomic_best_encoder) | |
312 | new_encoder = funcs->atomic_best_encoder(connector, | |
415c3ac3 | 313 | new_connector_state); |
c61b93fe | 314 | else if (funcs->best_encoder) |
3b8a684b | 315 | new_encoder = funcs->best_encoder(connector); |
c61b93fe BB |
316 | else |
317 | new_encoder = drm_atomic_helper_best_encoder(connector); | |
623369e5 DV |
318 | |
319 | if (!new_encoder) { | |
17a38d9c DV |
320 | DRM_DEBUG_ATOMIC("No suitable encoder found for [CONNECTOR:%d:%s]\n", |
321 | connector->base.id, | |
322 | connector->name); | |
623369e5 DV |
323 | return -EINVAL; |
324 | } | |
325 | ||
415c3ac3 | 326 | if (!drm_encoder_crtc_ok(new_encoder, new_connector_state->crtc)) { |
6ac7c548 | 327 | DRM_DEBUG_ATOMIC("[ENCODER:%d:%s] incompatible with [CRTC:%d:%s]\n", |
5481c8fb DV |
328 | new_encoder->base.id, |
329 | new_encoder->name, | |
415c3ac3 ML |
330 | new_connector_state->crtc->base.id, |
331 | new_connector_state->crtc->name); | |
5481c8fb DV |
332 | return -EINVAL; |
333 | } | |
334 | ||
415c3ac3 ML |
335 | if (new_encoder == new_connector_state->best_encoder) { |
336 | set_best_encoder(state, new_connector_state, new_encoder); | |
e87a52b3 | 337 | |
fa3ab4c2 | 338 | DRM_DEBUG_ATOMIC("[CONNECTOR:%d:%s] keeps [ENCODER:%d:%s], now on [CRTC:%d:%s]\n", |
17a38d9c DV |
339 | connector->base.id, |
340 | connector->name, | |
341 | new_encoder->base.id, | |
342 | new_encoder->name, | |
415c3ac3 ML |
343 | new_connector_state->crtc->base.id, |
344 | new_connector_state->crtc->name); | |
623369e5 DV |
345 | |
346 | return 0; | |
347 | } | |
348 | ||
ec5aaa58 | 349 | steal_encoder(state, new_encoder); |
6ea76f3c | 350 | |
415c3ac3 | 351 | set_best_encoder(state, new_connector_state, new_encoder); |
e87a52b3 | 352 | |
b4d93679 | 353 | crtc_state = drm_atomic_get_new_crtc_state(state, new_connector_state->crtc); |
fc596660 | 354 | crtc_state->connectors_changed = true; |
623369e5 | 355 | |
fa3ab4c2 | 356 | DRM_DEBUG_ATOMIC("[CONNECTOR:%d:%s] using [ENCODER:%d:%s] on [CRTC:%d:%s]\n", |
17a38d9c DV |
357 | connector->base.id, |
358 | connector->name, | |
359 | new_encoder->base.id, | |
360 | new_encoder->name, | |
415c3ac3 ML |
361 | new_connector_state->crtc->base.id, |
362 | new_connector_state->crtc->name); | |
623369e5 DV |
363 | |
364 | return 0; | |
365 | } | |
366 | ||
367 | static int | |
368 | mode_fixup(struct drm_atomic_state *state) | |
369 | { | |
df63b999 | 370 | struct drm_crtc *crtc; |
415c3ac3 | 371 | struct drm_crtc_state *new_crtc_state; |
df63b999 | 372 | struct drm_connector *connector; |
415c3ac3 | 373 | struct drm_connector_state *new_conn_state; |
623369e5 | 374 | int i; |
f9ad86e4 | 375 | int ret; |
623369e5 | 376 | |
415c3ac3 ML |
377 | for_each_new_crtc_in_state(state, crtc, new_crtc_state, i) { |
378 | if (!new_crtc_state->mode_changed && | |
379 | !new_crtc_state->connectors_changed) | |
623369e5 DV |
380 | continue; |
381 | ||
415c3ac3 | 382 | drm_mode_copy(&new_crtc_state->adjusted_mode, &new_crtc_state->mode); |
623369e5 DV |
383 | } |
384 | ||
415c3ac3 | 385 | for_each_new_connector_in_state(state, connector, new_conn_state, i) { |
b5ceff20 | 386 | const struct drm_encoder_helper_funcs *funcs; |
623369e5 DV |
387 | struct drm_encoder *encoder; |
388 | ||
415c3ac3 | 389 | WARN_ON(!!new_conn_state->best_encoder != !!new_conn_state->crtc); |
623369e5 | 390 | |
415c3ac3 | 391 | if (!new_conn_state->crtc || !new_conn_state->best_encoder) |
623369e5 DV |
392 | continue; |
393 | ||
415c3ac3 | 394 | new_crtc_state = |
b4d93679 | 395 | drm_atomic_get_new_crtc_state(state, new_conn_state->crtc); |
623369e5 DV |
396 | |
397 | /* | |
398 | * Each encoder has at most one connector (since we always steal | |
399 | * it away), so we won't call ->mode_fixup twice. | |
400 | */ | |
415c3ac3 | 401 | encoder = new_conn_state->best_encoder; |
623369e5 DV |
402 | funcs = encoder->helper_private; |
403 | ||
415c3ac3 ML |
404 | ret = drm_bridge_mode_fixup(encoder->bridge, &new_crtc_state->mode, |
405 | &new_crtc_state->adjusted_mode); | |
862e686c AT |
406 | if (!ret) { |
407 | DRM_DEBUG_ATOMIC("Bridge fixup failed\n"); | |
408 | return -EINVAL; | |
623369e5 DV |
409 | } |
410 | ||
2827635e | 411 | if (funcs && funcs->atomic_check) { |
415c3ac3 ML |
412 | ret = funcs->atomic_check(encoder, new_crtc_state, |
413 | new_conn_state); | |
4cd4df80 | 414 | if (ret) { |
17a38d9c DV |
415 | DRM_DEBUG_ATOMIC("[ENCODER:%d:%s] check failed\n", |
416 | encoder->base.id, encoder->name); | |
4cd4df80 TR |
417 | return ret; |
418 | } | |
2827635e | 419 | } else if (funcs && funcs->mode_fixup) { |
415c3ac3 ML |
420 | ret = funcs->mode_fixup(encoder, &new_crtc_state->mode, |
421 | &new_crtc_state->adjusted_mode); | |
4cd4df80 | 422 | if (!ret) { |
17a38d9c DV |
423 | DRM_DEBUG_ATOMIC("[ENCODER:%d:%s] fixup failed\n", |
424 | encoder->base.id, encoder->name); | |
4cd4df80 TR |
425 | return -EINVAL; |
426 | } | |
623369e5 DV |
427 | } |
428 | } | |
429 | ||
415c3ac3 | 430 | for_each_new_crtc_in_state(state, crtc, new_crtc_state, i) { |
b5ceff20 | 431 | const struct drm_crtc_helper_funcs *funcs; |
623369e5 | 432 | |
415c3ac3 | 433 | if (!new_crtc_state->enable) |
f55f1701 LY |
434 | continue; |
435 | ||
415c3ac3 ML |
436 | if (!new_crtc_state->mode_changed && |
437 | !new_crtc_state->connectors_changed) | |
623369e5 DV |
438 | continue; |
439 | ||
440 | funcs = crtc->helper_private; | |
840bfe95 ACO |
441 | if (!funcs->mode_fixup) |
442 | continue; | |
443 | ||
415c3ac3 ML |
444 | ret = funcs->mode_fixup(crtc, &new_crtc_state->mode, |
445 | &new_crtc_state->adjusted_mode); | |
623369e5 | 446 | if (!ret) { |
fa3ab4c2 VS |
447 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] fixup failed\n", |
448 | crtc->base.id, crtc->name); | |
623369e5 DV |
449 | return -EINVAL; |
450 | } | |
451 | } | |
452 | ||
453 | return 0; | |
454 | } | |
455 | ||
faf94a08 JA |
456 | static enum drm_mode_status mode_valid_path(struct drm_connector *connector, |
457 | struct drm_encoder *encoder, | |
458 | struct drm_crtc *crtc, | |
459 | struct drm_display_mode *mode) | |
460 | { | |
461 | enum drm_mode_status ret; | |
462 | ||
463 | ret = drm_encoder_mode_valid(encoder, mode); | |
464 | if (ret != MODE_OK) { | |
465 | DRM_DEBUG_ATOMIC("[ENCODER:%d:%s] mode_valid() failed\n", | |
466 | encoder->base.id, encoder->name); | |
467 | return ret; | |
468 | } | |
469 | ||
470 | ret = drm_bridge_mode_valid(encoder->bridge, mode); | |
471 | if (ret != MODE_OK) { | |
472 | DRM_DEBUG_ATOMIC("[BRIDGE] mode_valid() failed\n"); | |
473 | return ret; | |
474 | } | |
475 | ||
476 | ret = drm_crtc_mode_valid(crtc, mode); | |
477 | if (ret != MODE_OK) { | |
478 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] mode_valid() failed\n", | |
479 | crtc->base.id, crtc->name); | |
480 | return ret; | |
481 | } | |
482 | ||
483 | return ret; | |
484 | } | |
485 | ||
486 | static int | |
487 | mode_valid(struct drm_atomic_state *state) | |
488 | { | |
489 | struct drm_connector_state *conn_state; | |
490 | struct drm_connector *connector; | |
491 | int i; | |
492 | ||
493 | for_each_new_connector_in_state(state, connector, conn_state, i) { | |
494 | struct drm_encoder *encoder = conn_state->best_encoder; | |
495 | struct drm_crtc *crtc = conn_state->crtc; | |
496 | struct drm_crtc_state *crtc_state; | |
497 | enum drm_mode_status mode_status; | |
498 | struct drm_display_mode *mode; | |
499 | ||
500 | if (!crtc || !encoder) | |
501 | continue; | |
502 | ||
503 | crtc_state = drm_atomic_get_new_crtc_state(state, crtc); | |
504 | if (!crtc_state) | |
505 | continue; | |
506 | if (!crtc_state->mode_changed && !crtc_state->connectors_changed) | |
507 | continue; | |
508 | ||
509 | mode = &crtc_state->mode; | |
510 | ||
511 | mode_status = mode_valid_path(connector, encoder, crtc, mode); | |
512 | if (mode_status != MODE_OK) | |
513 | return -EINVAL; | |
514 | } | |
515 | ||
516 | return 0; | |
517 | } | |
518 | ||
d9b13620 | 519 | /** |
f98bd3ef | 520 | * drm_atomic_helper_check_modeset - validate state object for modeset changes |
d9b13620 DV |
521 | * @dev: DRM device |
522 | * @state: the driver state object | |
523 | * | |
524 | * Check the state object to see if the requested state is physically possible. | |
525 | * This does all the crtc and connector related computations for an atomic | |
ce09d766 ML |
526 | * update and adds any additional connectors needed for full modesets. It calls |
527 | * the various per-object callbacks in the follow order: | |
528 | * | |
529 | * 1. &drm_connector_helper_funcs.atomic_best_encoder for determining the new encoder. | |
530 | * 2. &drm_connector_helper_funcs.atomic_check to validate the connector state. | |
531 | * 3. If it's determined a modeset is needed then all connectors on the affected crtc | |
532 | * crtc are added and &drm_connector_helper_funcs.atomic_check is run on them. | |
faf94a08 JA |
533 | * 4. &drm_encoder_helper_funcs.mode_valid, &drm_bridge_funcs.mode_valid and |
534 | * &drm_crtc_helper_funcs.mode_valid are called on the affected components. | |
535 | * 5. &drm_bridge_funcs.mode_fixup is called on all encoder bridges. | |
536 | * 6. &drm_encoder_helper_funcs.atomic_check is called to validate any encoder state. | |
ce09d766 ML |
537 | * This function is only called when the encoder will be part of a configured crtc, |
538 | * it must not be used for implementing connector property validation. | |
539 | * If this function is NULL, &drm_atomic_encoder_helper_funcs.mode_fixup is called | |
540 | * instead. | |
faf94a08 | 541 | * 7. &drm_crtc_helper_funcs.mode_fixup is called last, to fix up the mode with crtc constraints. |
6806cdf9 DV |
542 | * |
543 | * &drm_crtc_state.mode_changed is set when the input mode is changed. | |
544 | * &drm_crtc_state.connectors_changed is set when a connector is added or | |
545 | * removed from the crtc. &drm_crtc_state.active_changed is set when | |
546 | * &drm_crtc_state.active changes, which is used for DPMS. | |
d807ed1c | 547 | * See also: drm_atomic_crtc_needs_modeset() |
d9b13620 DV |
548 | * |
549 | * IMPORTANT: | |
550 | * | |
6806cdf9 DV |
551 | * Drivers which set &drm_crtc_state.mode_changed (e.g. in their |
552 | * &drm_plane_helper_funcs.atomic_check hooks if a plane update can't be done | |
553 | * without a full modeset) _must_ call this function afterwards after that | |
554 | * change. It is permitted to call this function multiple times for the same | |
555 | * update, e.g. when the &drm_crtc_helper_funcs.atomic_check functions depend | |
556 | * upon the adjusted dotclock for fifo space allocation and watermark | |
557 | * computation. | |
d9b13620 | 558 | * |
c39032a8 | 559 | * RETURNS: |
d9b13620 DV |
560 | * Zero for success or -errno |
561 | */ | |
562 | int | |
934ce1c2 | 563 | drm_atomic_helper_check_modeset(struct drm_device *dev, |
623369e5 DV |
564 | struct drm_atomic_state *state) |
565 | { | |
623369e5 | 566 | struct drm_crtc *crtc; |
415c3ac3 | 567 | struct drm_crtc_state *old_crtc_state, *new_crtc_state; |
df63b999 | 568 | struct drm_connector *connector; |
415c3ac3 | 569 | struct drm_connector_state *old_connector_state, *new_connector_state; |
623369e5 | 570 | int i, ret; |
ce09d766 | 571 | unsigned connectors_mask = 0; |
623369e5 | 572 | |
415c3ac3 | 573 | for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) { |
970ece83 ML |
574 | bool has_connectors = |
575 | !!new_crtc_state->connector_mask; | |
576 | ||
869e188a DV |
577 | WARN_ON(!drm_modeset_is_locked(&crtc->mutex)); |
578 | ||
415c3ac3 | 579 | if (!drm_mode_equal(&old_crtc_state->mode, &new_crtc_state->mode)) { |
fa3ab4c2 VS |
580 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] mode changed\n", |
581 | crtc->base.id, crtc->name); | |
415c3ac3 | 582 | new_crtc_state->mode_changed = true; |
623369e5 DV |
583 | } |
584 | ||
415c3ac3 | 585 | if (old_crtc_state->enable != new_crtc_state->enable) { |
fa3ab4c2 VS |
586 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] enable changed\n", |
587 | crtc->base.id, crtc->name); | |
fc596660 ML |
588 | |
589 | /* | |
590 | * For clarity this assignment is done here, but | |
591 | * enable == 0 is only true when there are no | |
592 | * connectors and a NULL mode. | |
593 | * | |
594 | * The other way around is true as well. enable != 0 | |
595 | * iff connectors are attached and a mode is set. | |
596 | */ | |
415c3ac3 ML |
597 | new_crtc_state->mode_changed = true; |
598 | new_crtc_state->connectors_changed = true; | |
623369e5 | 599 | } |
24d6652c ML |
600 | |
601 | if (old_crtc_state->active != new_crtc_state->active) { | |
602 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] active changed\n", | |
603 | crtc->base.id, crtc->name); | |
604 | new_crtc_state->active_changed = true; | |
605 | } | |
970ece83 ML |
606 | |
607 | if (new_crtc_state->enable != has_connectors) { | |
608 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] enabled/connectors mismatch\n", | |
609 | crtc->base.id, crtc->name); | |
610 | ||
611 | return -EINVAL; | |
612 | } | |
623369e5 DV |
613 | } |
614 | ||
44596b8c | 615 | ret = handle_conflicting_encoders(state, false); |
8248b65d ML |
616 | if (ret) |
617 | return ret; | |
40616a26 | 618 | |
415c3ac3 | 619 | for_each_oldnew_connector_in_state(state, connector, old_connector_state, new_connector_state, i) { |
ce09d766 ML |
620 | const struct drm_connector_helper_funcs *funcs = connector->helper_private; |
621 | ||
869e188a DV |
622 | WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex)); |
623 | ||
623369e5 | 624 | /* |
d807ed1c BS |
625 | * This only sets crtc->connectors_changed for routing changes, |
626 | * drivers must set crtc->connectors_changed themselves when | |
627 | * connector properties need to be updated. | |
623369e5 | 628 | */ |
9459545b | 629 | ret = update_connector_routing(state, connector, |
415c3ac3 ML |
630 | old_connector_state, |
631 | new_connector_state); | |
623369e5 DV |
632 | if (ret) |
633 | return ret; | |
415c3ac3 | 634 | if (old_connector_state->crtc) { |
b4d93679 ML |
635 | new_crtc_state = drm_atomic_get_new_crtc_state(state, |
636 | old_connector_state->crtc); | |
415c3ac3 ML |
637 | if (old_connector_state->link_status != |
638 | new_connector_state->link_status) | |
639 | new_crtc_state->connectors_changed = true; | |
40ee6fbe | 640 | } |
ce09d766 ML |
641 | |
642 | if (funcs->atomic_check) | |
643 | ret = funcs->atomic_check(connector, new_connector_state); | |
644 | if (ret) | |
645 | return ret; | |
646 | ||
647 | connectors_mask += BIT(i); | |
623369e5 DV |
648 | } |
649 | ||
650 | /* | |
651 | * After all the routing has been prepared we need to add in any | |
652 | * connector which is itself unchanged, but who's crtc changes it's | |
653 | * configuration. This must be done before calling mode_fixup in case a | |
654 | * crtc only changed its mode but has the same set of connectors. | |
655 | */ | |
415c3ac3 | 656 | for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) { |
415c3ac3 | 657 | if (!drm_atomic_crtc_needs_modeset(new_crtc_state)) |
623369e5 DV |
658 | continue; |
659 | ||
fa3ab4c2 VS |
660 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] needs all connectors, enable: %c, active: %c\n", |
661 | crtc->base.id, crtc->name, | |
415c3ac3 ML |
662 | new_crtc_state->enable ? 'y' : 'n', |
663 | new_crtc_state->active ? 'y' : 'n'); | |
623369e5 DV |
664 | |
665 | ret = drm_atomic_add_affected_connectors(state, crtc); | |
666 | if (ret != 0) | |
667 | return ret; | |
668 | ||
57744aa7 ML |
669 | ret = drm_atomic_add_affected_planes(state, crtc); |
670 | if (ret != 0) | |
671 | return ret; | |
623369e5 DV |
672 | } |
673 | ||
ce09d766 ML |
674 | /* |
675 | * Iterate over all connectors again, to make sure atomic_check() | |
676 | * has been called on them when a modeset is forced. | |
677 | */ | |
678 | for_each_oldnew_connector_in_state(state, connector, old_connector_state, new_connector_state, i) { | |
679 | const struct drm_connector_helper_funcs *funcs = connector->helper_private; | |
680 | ||
681 | if (connectors_mask & BIT(i)) | |
682 | continue; | |
683 | ||
684 | if (funcs->atomic_check) | |
685 | ret = funcs->atomic_check(connector, new_connector_state); | |
686 | if (ret) | |
687 | return ret; | |
688 | } | |
689 | ||
faf94a08 JA |
690 | ret = mode_valid(state); |
691 | if (ret) | |
692 | return ret; | |
693 | ||
623369e5 DV |
694 | return mode_fixup(state); |
695 | } | |
d9b13620 | 696 | EXPORT_SYMBOL(drm_atomic_helper_check_modeset); |
623369e5 | 697 | |
c2fcd274 | 698 | /** |
f98bd3ef | 699 | * drm_atomic_helper_check_planes - validate state object for planes changes |
c2fcd274 DV |
700 | * @dev: DRM device |
701 | * @state: the driver state object | |
702 | * | |
703 | * Check the state object to see if the requested state is physically possible. | |
d9b13620 | 704 | * This does all the plane update related checks using by calling into the |
6806cdf9 DV |
705 | * &drm_crtc_helper_funcs.atomic_check and &drm_plane_helper_funcs.atomic_check |
706 | * hooks provided by the driver. | |
c2fcd274 | 707 | * |
6806cdf9 | 708 | * It also sets &drm_crtc_state.planes_changed to indicate that a crtc has |
fc596660 ML |
709 | * updated planes. |
710 | * | |
c39032a8 | 711 | * RETURNS: |
c2fcd274 DV |
712 | * Zero for success or -errno |
713 | */ | |
d9b13620 DV |
714 | int |
715 | drm_atomic_helper_check_planes(struct drm_device *dev, | |
716 | struct drm_atomic_state *state) | |
c2fcd274 | 717 | { |
df63b999 | 718 | struct drm_crtc *crtc; |
415c3ac3 | 719 | struct drm_crtc_state *new_crtc_state; |
df63b999 | 720 | struct drm_plane *plane; |
415c3ac3 | 721 | struct drm_plane_state *new_plane_state, *old_plane_state; |
c2fcd274 DV |
722 | int i, ret = 0; |
723 | ||
415c3ac3 | 724 | for_each_oldnew_plane_in_state(state, plane, old_plane_state, new_plane_state, i) { |
b5ceff20 | 725 | const struct drm_plane_helper_funcs *funcs; |
c2fcd274 | 726 | |
869e188a DV |
727 | WARN_ON(!drm_modeset_is_locked(&plane->mutex)); |
728 | ||
c2fcd274 DV |
729 | funcs = plane->helper_private; |
730 | ||
415c3ac3 | 731 | drm_atomic_helper_plane_changed(state, old_plane_state, new_plane_state, plane); |
c2fcd274 DV |
732 | |
733 | if (!funcs || !funcs->atomic_check) | |
734 | continue; | |
735 | ||
415c3ac3 | 736 | ret = funcs->atomic_check(plane, new_plane_state); |
c2fcd274 | 737 | if (ret) { |
9f4c97a2 VS |
738 | DRM_DEBUG_ATOMIC("[PLANE:%d:%s] atomic driver check failed\n", |
739 | plane->base.id, plane->name); | |
c2fcd274 DV |
740 | return ret; |
741 | } | |
742 | } | |
743 | ||
415c3ac3 | 744 | for_each_new_crtc_in_state(state, crtc, new_crtc_state, i) { |
b5ceff20 | 745 | const struct drm_crtc_helper_funcs *funcs; |
c2fcd274 DV |
746 | |
747 | funcs = crtc->helper_private; | |
748 | ||
749 | if (!funcs || !funcs->atomic_check) | |
750 | continue; | |
751 | ||
415c3ac3 | 752 | ret = funcs->atomic_check(crtc, new_crtc_state); |
c2fcd274 | 753 | if (ret) { |
fa3ab4c2 VS |
754 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] atomic driver check failed\n", |
755 | crtc->base.id, crtc->name); | |
c2fcd274 DV |
756 | return ret; |
757 | } | |
758 | } | |
759 | ||
d9b13620 DV |
760 | return ret; |
761 | } | |
762 | EXPORT_SYMBOL(drm_atomic_helper_check_planes); | |
763 | ||
764 | /** | |
765 | * drm_atomic_helper_check - validate state object | |
766 | * @dev: DRM device | |
767 | * @state: the driver state object | |
768 | * | |
769 | * Check the state object to see if the requested state is physically possible. | |
770 | * Only crtcs and planes have check callbacks, so for any additional (global) | |
771 | * checking that a driver needs it can simply wrap that around this function. | |
6806cdf9 DV |
772 | * Drivers without such needs can directly use this as their |
773 | * &drm_mode_config_funcs.atomic_check callback. | |
d9b13620 | 774 | * |
b4274fbe DV |
775 | * This just wraps the two parts of the state checking for planes and modeset |
776 | * state in the default order: First it calls drm_atomic_helper_check_modeset() | |
777 | * and then drm_atomic_helper_check_planes(). The assumption is that the | |
6806cdf9 DV |
778 | * @drm_plane_helper_funcs.atomic_check and @drm_crtc_helper_funcs.atomic_check |
779 | * functions depend upon an updated adjusted_mode.clock to e.g. properly compute | |
780 | * watermarks. | |
b4274fbe | 781 | * |
c39032a8 | 782 | * RETURNS: |
d9b13620 DV |
783 | * Zero for success or -errno |
784 | */ | |
785 | int drm_atomic_helper_check(struct drm_device *dev, | |
786 | struct drm_atomic_state *state) | |
787 | { | |
788 | int ret; | |
789 | ||
b4274fbe | 790 | ret = drm_atomic_helper_check_modeset(dev, state); |
d9b13620 DV |
791 | if (ret) |
792 | return ret; | |
793 | ||
b4274fbe | 794 | ret = drm_atomic_helper_check_planes(dev, state); |
934ce1c2 RC |
795 | if (ret) |
796 | return ret; | |
797 | ||
fef9df8b GP |
798 | if (state->legacy_cursor_update) |
799 | state->async_update = !drm_atomic_helper_async_check(dev, state); | |
800 | ||
c2fcd274 DV |
801 | return ret; |
802 | } | |
803 | EXPORT_SYMBOL(drm_atomic_helper_check); | |
804 | ||
623369e5 DV |
805 | static void |
806 | disable_outputs(struct drm_device *dev, struct drm_atomic_state *old_state) | |
807 | { | |
df63b999 | 808 | struct drm_connector *connector; |
415c3ac3 | 809 | struct drm_connector_state *old_conn_state, *new_conn_state; |
df63b999 | 810 | struct drm_crtc *crtc; |
415c3ac3 | 811 | struct drm_crtc_state *old_crtc_state, *new_crtc_state; |
623369e5 DV |
812 | int i; |
813 | ||
415c3ac3 | 814 | for_each_oldnew_connector_in_state(old_state, connector, old_conn_state, new_conn_state, i) { |
b5ceff20 | 815 | const struct drm_encoder_helper_funcs *funcs; |
623369e5 DV |
816 | struct drm_encoder *encoder; |
817 | ||
623369e5 DV |
818 | /* Shut down everything that's in the changeset and currently |
819 | * still on. So need to check the old, saved state. */ | |
df63b999 | 820 | if (!old_conn_state->crtc) |
623369e5 DV |
821 | continue; |
822 | ||
b4d93679 | 823 | old_crtc_state = drm_atomic_get_old_crtc_state(old_state, old_conn_state->crtc); |
eab3bbef | 824 | |
4218a32f | 825 | if (!old_crtc_state->active || |
2465ff62 | 826 | !drm_atomic_crtc_needs_modeset(old_conn_state->crtc->state)) |
eab3bbef DV |
827 | continue; |
828 | ||
46df9adb | 829 | encoder = old_conn_state->best_encoder; |
623369e5 | 830 | |
46df9adb RC |
831 | /* We shouldn't get this far if we didn't previously have |
832 | * an encoder.. but WARN_ON() rather than explode. | |
833 | */ | |
834 | if (WARN_ON(!encoder)) | |
623369e5 DV |
835 | continue; |
836 | ||
837 | funcs = encoder->helper_private; | |
838 | ||
17a38d9c DV |
839 | DRM_DEBUG_ATOMIC("disabling [ENCODER:%d:%s]\n", |
840 | encoder->base.id, encoder->name); | |
95d6eb3b | 841 | |
623369e5 DV |
842 | /* |
843 | * Each encoder has at most one connector (since we always steal | |
f98bd3ef | 844 | * it away), so we won't call disable hooks twice. |
623369e5 | 845 | */ |
862e686c | 846 | drm_bridge_disable(encoder->bridge); |
623369e5 DV |
847 | |
848 | /* Right function depends upon target state. */ | |
2827635e | 849 | if (funcs) { |
415c3ac3 | 850 | if (new_conn_state->crtc && funcs->prepare) |
2827635e NT |
851 | funcs->prepare(encoder); |
852 | else if (funcs->disable) | |
853 | funcs->disable(encoder); | |
854 | else if (funcs->dpms) | |
855 | funcs->dpms(encoder, DRM_MODE_DPMS_OFF); | |
856 | } | |
623369e5 | 857 | |
862e686c | 858 | drm_bridge_post_disable(encoder->bridge); |
623369e5 DV |
859 | } |
860 | ||
415c3ac3 | 861 | for_each_oldnew_crtc_in_state(old_state, crtc, old_crtc_state, new_crtc_state, i) { |
b5ceff20 | 862 | const struct drm_crtc_helper_funcs *funcs; |
84014b0a | 863 | int ret; |
623369e5 DV |
864 | |
865 | /* Shut down everything that needs a full modeset. */ | |
415c3ac3 | 866 | if (!drm_atomic_crtc_needs_modeset(new_crtc_state)) |
eab3bbef DV |
867 | continue; |
868 | ||
869 | if (!old_crtc_state->active) | |
623369e5 DV |
870 | continue; |
871 | ||
872 | funcs = crtc->helper_private; | |
873 | ||
fa3ab4c2 VS |
874 | DRM_DEBUG_ATOMIC("disabling [CRTC:%d:%s]\n", |
875 | crtc->base.id, crtc->name); | |
95d6eb3b DV |
876 | |
877 | ||
623369e5 | 878 | /* Right function depends upon target state. */ |
415c3ac3 | 879 | if (new_crtc_state->enable && funcs->prepare) |
623369e5 | 880 | funcs->prepare(crtc); |
c9ac8b4c LY |
881 | else if (funcs->atomic_disable) |
882 | funcs->atomic_disable(crtc, old_crtc_state); | |
623369e5 DV |
883 | else if (funcs->disable) |
884 | funcs->disable(crtc); | |
885 | else | |
886 | funcs->dpms(crtc, DRM_MODE_DPMS_OFF); | |
84014b0a DV |
887 | |
888 | if (!(dev->irq_enabled && dev->num_crtcs)) | |
889 | continue; | |
890 | ||
891 | ret = drm_crtc_vblank_get(crtc); | |
892 | WARN_ONCE(ret != -EINVAL, "driver forgot to call drm_crtc_vblank_off()\n"); | |
893 | if (ret == 0) | |
894 | drm_crtc_vblank_put(crtc); | |
623369e5 DV |
895 | } |
896 | } | |
897 | ||
4c18d301 DV |
898 | /** |
899 | * drm_atomic_helper_update_legacy_modeset_state - update legacy modeset state | |
900 | * @dev: DRM device | |
901 | * @old_state: atomic state object with old state structures | |
902 | * | |
903 | * This function updates all the various legacy modeset state pointers in | |
904 | * connectors, encoders and crtcs. It also updates the timestamping constants | |
905 | * used for precise vblank timestamps by calling | |
906 | * drm_calc_timestamping_constants(). | |
907 | * | |
908 | * Drivers can use this for building their own atomic commit if they don't have | |
909 | * a pure helper-based modeset implementation. | |
910 | */ | |
911 | void | |
912 | drm_atomic_helper_update_legacy_modeset_state(struct drm_device *dev, | |
913 | struct drm_atomic_state *old_state) | |
623369e5 | 914 | { |
df63b999 | 915 | struct drm_connector *connector; |
415c3ac3 | 916 | struct drm_connector_state *old_conn_state, *new_conn_state; |
df63b999 | 917 | struct drm_crtc *crtc; |
415c3ac3 | 918 | struct drm_crtc_state *new_crtc_state; |
623369e5 DV |
919 | int i; |
920 | ||
8c10342c | 921 | /* clear out existing links and update dpms */ |
415c3ac3 | 922 | for_each_oldnew_connector_in_state(old_state, connector, old_conn_state, new_conn_state, i) { |
8c10342c ML |
923 | if (connector->encoder) { |
924 | WARN_ON(!connector->encoder->crtc); | |
925 | ||
926 | connector->encoder->crtc = NULL; | |
927 | connector->encoder = NULL; | |
928 | } | |
623369e5 | 929 | |
415c3ac3 | 930 | crtc = new_conn_state->crtc; |
8c10342c ML |
931 | if ((!crtc && old_conn_state->crtc) || |
932 | (crtc && drm_atomic_crtc_needs_modeset(crtc->state))) { | |
8c10342c | 933 | int mode = DRM_MODE_DPMS_OFF; |
623369e5 | 934 | |
8c10342c ML |
935 | if (crtc && crtc->state->active) |
936 | mode = DRM_MODE_DPMS_ON; | |
937 | ||
938 | connector->dpms = mode; | |
8c10342c | 939 | } |
623369e5 DV |
940 | } |
941 | ||
942 | /* set new links */ | |
415c3ac3 ML |
943 | for_each_new_connector_in_state(old_state, connector, new_conn_state, i) { |
944 | if (!new_conn_state->crtc) | |
623369e5 DV |
945 | continue; |
946 | ||
415c3ac3 | 947 | if (WARN_ON(!new_conn_state->best_encoder)) |
623369e5 DV |
948 | continue; |
949 | ||
415c3ac3 ML |
950 | connector->encoder = new_conn_state->best_encoder; |
951 | connector->encoder->crtc = new_conn_state->crtc; | |
623369e5 DV |
952 | } |
953 | ||
954 | /* set legacy state in the crtc structure */ | |
415c3ac3 | 955 | for_each_new_crtc_in_state(old_state, crtc, new_crtc_state, i) { |
2660801f | 956 | struct drm_plane *primary = crtc->primary; |
b4d93679 | 957 | struct drm_plane_state *new_plane_state; |
2660801f | 958 | |
415c3ac3 ML |
959 | crtc->mode = new_crtc_state->mode; |
960 | crtc->enabled = new_crtc_state->enable; | |
2660801f | 961 | |
b4d93679 ML |
962 | new_plane_state = |
963 | drm_atomic_get_new_plane_state(old_state, primary); | |
964 | ||
965 | if (new_plane_state && new_plane_state->crtc == crtc) { | |
966 | crtc->x = new_plane_state->src_x >> 16; | |
967 | crtc->y = new_plane_state->src_y >> 16; | |
2660801f | 968 | } |
3d51d2d2 | 969 | |
415c3ac3 | 970 | if (new_crtc_state->enable) |
3d51d2d2 | 971 | drm_calc_timestamping_constants(crtc, |
415c3ac3 | 972 | &new_crtc_state->adjusted_mode); |
623369e5 DV |
973 | } |
974 | } | |
4c18d301 | 975 | EXPORT_SYMBOL(drm_atomic_helper_update_legacy_modeset_state); |
623369e5 DV |
976 | |
977 | static void | |
978 | crtc_set_mode(struct drm_device *dev, struct drm_atomic_state *old_state) | |
979 | { | |
df63b999 | 980 | struct drm_crtc *crtc; |
415c3ac3 | 981 | struct drm_crtc_state *new_crtc_state; |
df63b999 | 982 | struct drm_connector *connector; |
415c3ac3 | 983 | struct drm_connector_state *new_conn_state; |
623369e5 DV |
984 | int i; |
985 | ||
415c3ac3 | 986 | for_each_new_crtc_in_state(old_state, crtc, new_crtc_state, i) { |
b5ceff20 | 987 | const struct drm_crtc_helper_funcs *funcs; |
623369e5 | 988 | |
415c3ac3 | 989 | if (!new_crtc_state->mode_changed) |
623369e5 DV |
990 | continue; |
991 | ||
992 | funcs = crtc->helper_private; | |
993 | ||
415c3ac3 | 994 | if (new_crtc_state->enable && funcs->mode_set_nofb) { |
fa3ab4c2 VS |
995 | DRM_DEBUG_ATOMIC("modeset on [CRTC:%d:%s]\n", |
996 | crtc->base.id, crtc->name); | |
95d6eb3b | 997 | |
623369e5 | 998 | funcs->mode_set_nofb(crtc); |
95d6eb3b | 999 | } |
623369e5 DV |
1000 | } |
1001 | ||
415c3ac3 | 1002 | for_each_new_connector_in_state(old_state, connector, new_conn_state, i) { |
b5ceff20 | 1003 | const struct drm_encoder_helper_funcs *funcs; |
623369e5 DV |
1004 | struct drm_encoder *encoder; |
1005 | struct drm_display_mode *mode, *adjusted_mode; | |
1006 | ||
415c3ac3 | 1007 | if (!new_conn_state->best_encoder) |
623369e5 DV |
1008 | continue; |
1009 | ||
415c3ac3 | 1010 | encoder = new_conn_state->best_encoder; |
623369e5 | 1011 | funcs = encoder->helper_private; |
415c3ac3 | 1012 | new_crtc_state = new_conn_state->crtc->state; |
623369e5 DV |
1013 | mode = &new_crtc_state->mode; |
1014 | adjusted_mode = &new_crtc_state->adjusted_mode; | |
1015 | ||
eab3bbef DV |
1016 | if (!new_crtc_state->mode_changed) |
1017 | continue; | |
1018 | ||
17a38d9c DV |
1019 | DRM_DEBUG_ATOMIC("modeset on [ENCODER:%d:%s]\n", |
1020 | encoder->base.id, encoder->name); | |
95d6eb3b | 1021 | |
623369e5 DV |
1022 | /* |
1023 | * Each encoder has at most one connector (since we always steal | |
f98bd3ef | 1024 | * it away), so we won't call mode_set hooks twice. |
623369e5 | 1025 | */ |
fe4a11c9 PZ |
1026 | if (funcs && funcs->atomic_mode_set) { |
1027 | funcs->atomic_mode_set(encoder, new_crtc_state, | |
415c3ac3 | 1028 | new_conn_state); |
fe4a11c9 | 1029 | } else if (funcs && funcs->mode_set) { |
c982bd90 | 1030 | funcs->mode_set(encoder, mode, adjusted_mode); |
fe4a11c9 | 1031 | } |
623369e5 | 1032 | |
862e686c | 1033 | drm_bridge_mode_set(encoder->bridge, mode, adjusted_mode); |
623369e5 DV |
1034 | } |
1035 | } | |
1036 | ||
1037 | /** | |
1af434a9 | 1038 | * drm_atomic_helper_commit_modeset_disables - modeset commit to disable outputs |
623369e5 | 1039 | * @dev: DRM device |
a072f809 | 1040 | * @old_state: atomic state object with old state structures |
623369e5 | 1041 | * |
1af434a9 | 1042 | * This function shuts down all the outputs that need to be shut down and |
623369e5 | 1043 | * prepares them (if required) with the new mode. |
1af434a9 | 1044 | * |
60acc4eb | 1045 | * For compatibility with legacy crtc helpers this should be called before |
1af434a9 DV |
1046 | * drm_atomic_helper_commit_planes(), which is what the default commit function |
1047 | * does. But drivers with different needs can group the modeset commits together | |
1048 | * and do the plane commits at the end. This is useful for drivers doing runtime | |
1049 | * PM since planes updates then only happen when the CRTC is actually enabled. | |
623369e5 | 1050 | */ |
1af434a9 DV |
1051 | void drm_atomic_helper_commit_modeset_disables(struct drm_device *dev, |
1052 | struct drm_atomic_state *old_state) | |
623369e5 | 1053 | { |
a072f809 | 1054 | disable_outputs(dev, old_state); |
4c18d301 DV |
1055 | |
1056 | drm_atomic_helper_update_legacy_modeset_state(dev, old_state); | |
1057 | ||
a072f809 | 1058 | crtc_set_mode(dev, old_state); |
623369e5 | 1059 | } |
1af434a9 | 1060 | EXPORT_SYMBOL(drm_atomic_helper_commit_modeset_disables); |
623369e5 DV |
1061 | |
1062 | /** | |
1af434a9 | 1063 | * drm_atomic_helper_commit_modeset_enables - modeset commit to enable outputs |
623369e5 DV |
1064 | * @dev: DRM device |
1065 | * @old_state: atomic state object with old state structures | |
1066 | * | |
1af434a9 DV |
1067 | * This function enables all the outputs with the new configuration which had to |
1068 | * be turned off for the update. | |
1069 | * | |
60acc4eb | 1070 | * For compatibility with legacy crtc helpers this should be called after |
1af434a9 DV |
1071 | * drm_atomic_helper_commit_planes(), which is what the default commit function |
1072 | * does. But drivers with different needs can group the modeset commits together | |
1073 | * and do the plane commits at the end. This is useful for drivers doing runtime | |
1074 | * PM since planes updates then only happen when the CRTC is actually enabled. | |
623369e5 | 1075 | */ |
1af434a9 DV |
1076 | void drm_atomic_helper_commit_modeset_enables(struct drm_device *dev, |
1077 | struct drm_atomic_state *old_state) | |
623369e5 | 1078 | { |
df63b999 | 1079 | struct drm_crtc *crtc; |
0b20a0f8 | 1080 | struct drm_crtc_state *old_crtc_state; |
415c3ac3 | 1081 | struct drm_crtc_state *new_crtc_state; |
df63b999 | 1082 | struct drm_connector *connector; |
415c3ac3 | 1083 | struct drm_connector_state *new_conn_state; |
623369e5 DV |
1084 | int i; |
1085 | ||
0b20a0f8 | 1086 | for_each_oldnew_crtc_in_state(old_state, crtc, old_crtc_state, new_crtc_state, i) { |
b5ceff20 | 1087 | const struct drm_crtc_helper_funcs *funcs; |
623369e5 DV |
1088 | |
1089 | /* Need to filter out CRTCs where only planes change. */ | |
415c3ac3 | 1090 | if (!drm_atomic_crtc_needs_modeset(new_crtc_state)) |
eab3bbef DV |
1091 | continue; |
1092 | ||
415c3ac3 | 1093 | if (!new_crtc_state->active) |
623369e5 DV |
1094 | continue; |
1095 | ||
1096 | funcs = crtc->helper_private; | |
1097 | ||
415c3ac3 | 1098 | if (new_crtc_state->enable) { |
fa3ab4c2 VS |
1099 | DRM_DEBUG_ATOMIC("enabling [CRTC:%d:%s]\n", |
1100 | crtc->base.id, crtc->name); | |
95d6eb3b | 1101 | |
0b20a0f8 LP |
1102 | if (funcs->atomic_enable) |
1103 | funcs->atomic_enable(crtc, old_crtc_state); | |
ee0a89cf DV |
1104 | else |
1105 | funcs->commit(crtc); | |
1106 | } | |
623369e5 DV |
1107 | } |
1108 | ||
415c3ac3 | 1109 | for_each_new_connector_in_state(old_state, connector, new_conn_state, i) { |
b5ceff20 | 1110 | const struct drm_encoder_helper_funcs *funcs; |
623369e5 DV |
1111 | struct drm_encoder *encoder; |
1112 | ||
415c3ac3 | 1113 | if (!new_conn_state->best_encoder) |
623369e5 DV |
1114 | continue; |
1115 | ||
415c3ac3 ML |
1116 | if (!new_conn_state->crtc->state->active || |
1117 | !drm_atomic_crtc_needs_modeset(new_conn_state->crtc->state)) | |
eab3bbef DV |
1118 | continue; |
1119 | ||
415c3ac3 | 1120 | encoder = new_conn_state->best_encoder; |
623369e5 DV |
1121 | funcs = encoder->helper_private; |
1122 | ||
17a38d9c DV |
1123 | DRM_DEBUG_ATOMIC("enabling [ENCODER:%d:%s]\n", |
1124 | encoder->base.id, encoder->name); | |
95d6eb3b | 1125 | |
623369e5 DV |
1126 | /* |
1127 | * Each encoder has at most one connector (since we always steal | |
f98bd3ef | 1128 | * it away), so we won't call enable hooks twice. |
623369e5 | 1129 | */ |
862e686c | 1130 | drm_bridge_pre_enable(encoder->bridge); |
623369e5 | 1131 | |
2827635e NT |
1132 | if (funcs) { |
1133 | if (funcs->enable) | |
1134 | funcs->enable(encoder); | |
1135 | else if (funcs->commit) | |
1136 | funcs->commit(encoder); | |
1137 | } | |
623369e5 | 1138 | |
862e686c | 1139 | drm_bridge_enable(encoder->bridge); |
623369e5 DV |
1140 | } |
1141 | } | |
1af434a9 | 1142 | EXPORT_SYMBOL(drm_atomic_helper_commit_modeset_enables); |
623369e5 | 1143 | |
4c5b7f3a RC |
1144 | /** |
1145 | * drm_atomic_helper_wait_for_fences - wait for fences stashed in plane state | |
1146 | * @dev: DRM device | |
1147 | * @state: atomic state object with old state structures | |
1ea0c02e DV |
1148 | * @pre_swap: If true, do an interruptible wait, and @state is the new state. |
1149 | * Otherwise @state is the old state. | |
4c5b7f3a RC |
1150 | * |
1151 | * For implicit sync, driver should fish the exclusive fence out from the | |
1152 | * incoming fb's and stash it in the drm_plane_state. This is called after | |
1153 | * drm_atomic_helper_swap_state() so it uses the current plane state (and | |
1154 | * just uses the atomic state to find the changed planes) | |
f6ce410a | 1155 | * |
1ea0c02e DV |
1156 | * Note that @pre_swap is needed since the point where we block for fences moves |
1157 | * around depending upon whether an atomic commit is blocking or | |
42590372 GP |
1158 | * non-blocking. For non-blocking commit all waiting needs to happen after |
1159 | * drm_atomic_helper_swap_state() is called, but for blocking commits we want | |
1ea0c02e DV |
1160 | * to wait **before** we do anything that can't be easily rolled back. That is |
1161 | * before we call drm_atomic_helper_swap_state(). | |
1162 | * | |
f54d1867 | 1163 | * Returns zero if success or < 0 if dma_fence_wait() fails. |
4c5b7f3a | 1164 | */ |
f6ce410a GP |
1165 | int drm_atomic_helper_wait_for_fences(struct drm_device *dev, |
1166 | struct drm_atomic_state *state, | |
1167 | bool pre_swap) | |
e2330f07 | 1168 | { |
df63b999 | 1169 | struct drm_plane *plane; |
415c3ac3 | 1170 | struct drm_plane_state *new_plane_state; |
f6ce410a | 1171 | int i, ret; |
e2330f07 | 1172 | |
415c3ac3 ML |
1173 | for_each_new_plane_in_state(state, plane, new_plane_state, i) { |
1174 | if (!new_plane_state->fence) | |
e2330f07 DV |
1175 | continue; |
1176 | ||
415c3ac3 | 1177 | WARN_ON(!new_plane_state->fb); |
f6ce410a GP |
1178 | |
1179 | /* | |
1180 | * If waiting for fences pre-swap (ie: nonblock), userspace can | |
1181 | * still interrupt the operation. Instead of blocking until the | |
1182 | * timer expires, make the wait interruptible. | |
1183 | */ | |
415c3ac3 | 1184 | ret = dma_fence_wait(new_plane_state->fence, pre_swap); |
f6ce410a GP |
1185 | if (ret) |
1186 | return ret; | |
e2330f07 | 1187 | |
415c3ac3 ML |
1188 | dma_fence_put(new_plane_state->fence); |
1189 | new_plane_state->fence = NULL; | |
e2330f07 | 1190 | } |
f6ce410a GP |
1191 | |
1192 | return 0; | |
e2330f07 | 1193 | } |
4c5b7f3a | 1194 | EXPORT_SYMBOL(drm_atomic_helper_wait_for_fences); |
e2330f07 | 1195 | |
5ee3229c RC |
1196 | /** |
1197 | * drm_atomic_helper_wait_for_vblanks - wait for vblank on crtcs | |
1198 | * @dev: DRM device | |
1199 | * @old_state: atomic state object with old state structures | |
1200 | * | |
1201 | * Helper to, after atomic commit, wait for vblanks on all effected | |
1202 | * crtcs (ie. before cleaning up old framebuffers using | |
01086487 | 1203 | * drm_atomic_helper_cleanup_planes()). It will only wait on CRTCs where the |
ab58e338 DV |
1204 | * framebuffers have actually changed to optimize for the legacy cursor and |
1205 | * plane update use-case. | |
01086487 BB |
1206 | * |
1207 | * Drivers using the nonblocking commit tracking support initialized by calling | |
1208 | * drm_atomic_helper_setup_commit() should look at | |
1209 | * drm_atomic_helper_wait_for_flip_done() as an alternative. | |
5ee3229c RC |
1210 | */ |
1211 | void | |
1212 | drm_atomic_helper_wait_for_vblanks(struct drm_device *dev, | |
1213 | struct drm_atomic_state *old_state) | |
623369e5 DV |
1214 | { |
1215 | struct drm_crtc *crtc; | |
415c3ac3 | 1216 | struct drm_crtc_state *old_crtc_state, *new_crtc_state; |
623369e5 | 1217 | int i, ret; |
bdc57146 | 1218 | unsigned crtc_mask = 0; |
623369e5 | 1219 | |
bdc57146 ML |
1220 | /* |
1221 | * Legacy cursor ioctls are completely unsynced, and userspace | |
1222 | * relies on that (by doing tons of cursor updates). | |
1223 | */ | |
1224 | if (old_state->legacy_cursor_update) | |
1225 | return; | |
623369e5 | 1226 | |
415c3ac3 | 1227 | for_each_oldnew_crtc_in_state(old_state, crtc, old_crtc_state, new_crtc_state, i) { |
a76dfe35 | 1228 | if (!new_crtc_state->active) |
ab58e338 DV |
1229 | continue; |
1230 | ||
623369e5 DV |
1231 | ret = drm_crtc_vblank_get(crtc); |
1232 | if (ret != 0) | |
1233 | continue; | |
1234 | ||
bdc57146 ML |
1235 | crtc_mask |= drm_crtc_mask(crtc); |
1236 | old_state->crtcs[i].last_vblank_count = drm_crtc_vblank_count(crtc); | |
623369e5 DV |
1237 | } |
1238 | ||
415c3ac3 | 1239 | for_each_old_crtc_in_state(old_state, crtc, old_crtc_state, i) { |
bdc57146 | 1240 | if (!(crtc_mask & drm_crtc_mask(crtc))) |
623369e5 DV |
1241 | continue; |
1242 | ||
1243 | ret = wait_event_timeout(dev->vblank[i].queue, | |
bdc57146 | 1244 | old_state->crtcs[i].last_vblank_count != |
d4853630 | 1245 | drm_crtc_vblank_count(crtc), |
623369e5 DV |
1246 | msecs_to_jiffies(50)); |
1247 | ||
6ac7c548 RK |
1248 | WARN(!ret, "[CRTC:%d:%s] vblank wait timed out\n", |
1249 | crtc->base.id, crtc->name); | |
8d4d0d70 | 1250 | |
623369e5 DV |
1251 | drm_crtc_vblank_put(crtc); |
1252 | } | |
1253 | } | |
5ee3229c | 1254 | EXPORT_SYMBOL(drm_atomic_helper_wait_for_vblanks); |
623369e5 | 1255 | |
01086487 BB |
1256 | /** |
1257 | * drm_atomic_helper_wait_for_flip_done - wait for all page flips to be done | |
1258 | * @dev: DRM device | |
1259 | * @old_state: atomic state object with old state structures | |
1260 | * | |
1261 | * Helper to, after atomic commit, wait for page flips on all effected | |
1262 | * crtcs (ie. before cleaning up old framebuffers using | |
1263 | * drm_atomic_helper_cleanup_planes()). Compared to | |
1264 | * drm_atomic_helper_wait_for_vblanks() this waits for the completion of on all | |
1265 | * CRTCs, assuming that cursors-only updates are signalling their completion | |
1266 | * immediately (or using a different path). | |
1267 | * | |
1268 | * This requires that drivers use the nonblocking commit tracking support | |
1269 | * initialized using drm_atomic_helper_setup_commit(). | |
1270 | */ | |
1271 | void drm_atomic_helper_wait_for_flip_done(struct drm_device *dev, | |
1272 | struct drm_atomic_state *old_state) | |
1273 | { | |
163bcc2c | 1274 | struct drm_crtc_state *new_crtc_state; |
01086487 BB |
1275 | struct drm_crtc *crtc; |
1276 | int i; | |
1277 | ||
163bcc2c ML |
1278 | for_each_new_crtc_in_state(old_state, crtc, new_crtc_state, i) { |
1279 | struct drm_crtc_commit *commit = new_crtc_state->commit; | |
01086487 BB |
1280 | int ret; |
1281 | ||
1282 | if (!commit) | |
1283 | continue; | |
1284 | ||
1285 | ret = wait_for_completion_timeout(&commit->flip_done, 10 * HZ); | |
1286 | if (ret == 0) | |
1287 | DRM_ERROR("[CRTC:%d:%s] flip_done timed out\n", | |
1288 | crtc->base.id, crtc->name); | |
1289 | } | |
1290 | } | |
1291 | EXPORT_SYMBOL(drm_atomic_helper_wait_for_flip_done); | |
1292 | ||
623369e5 | 1293 | /** |
9f2a7950 | 1294 | * drm_atomic_helper_commit_tail - commit atomic update to hardware |
1ea0c02e | 1295 | * @old_state: atomic state object with old state structures |
623369e5 | 1296 | * |
6806cdf9 | 1297 | * This is the default implementation for the |
81a099ac MR |
1298 | * &drm_mode_config_helper_funcs.atomic_commit_tail hook, for drivers |
1299 | * that do not support runtime_pm or do not need the CRTC to be | |
1300 | * enabled to perform a commit. Otherwise, see | |
1301 | * drm_atomic_helper_commit_tail_rpm(). | |
623369e5 | 1302 | * |
9f2a7950 | 1303 | * Note that the default ordering of how the various stages are called is to |
81a099ac | 1304 | * match the legacy modeset helper library closest. |
9f2a7950 | 1305 | */ |
1ea0c02e | 1306 | void drm_atomic_helper_commit_tail(struct drm_atomic_state *old_state) |
9f2a7950 | 1307 | { |
1ea0c02e | 1308 | struct drm_device *dev = old_state->dev; |
9f2a7950 | 1309 | |
1ea0c02e | 1310 | drm_atomic_helper_commit_modeset_disables(dev, old_state); |
9f2a7950 | 1311 | |
1ea0c02e | 1312 | drm_atomic_helper_commit_planes(dev, old_state, 0); |
9f2a7950 | 1313 | |
1ea0c02e | 1314 | drm_atomic_helper_commit_modeset_enables(dev, old_state); |
9f2a7950 | 1315 | |
1ea0c02e | 1316 | drm_atomic_helper_commit_hw_done(old_state); |
9f2a7950 | 1317 | |
1ea0c02e | 1318 | drm_atomic_helper_wait_for_vblanks(dev, old_state); |
9f2a7950 | 1319 | |
1ea0c02e | 1320 | drm_atomic_helper_cleanup_planes(dev, old_state); |
9f2a7950 DV |
1321 | } |
1322 | EXPORT_SYMBOL(drm_atomic_helper_commit_tail); | |
1323 | ||
81a099ac MR |
1324 | /** |
1325 | * drm_atomic_helper_commit_tail_rpm - commit atomic update to hardware | |
1326 | * @old_state: new modeset state to be committed | |
1327 | * | |
1328 | * This is an alternative implementation for the | |
1329 | * &drm_mode_config_helper_funcs.atomic_commit_tail hook, for drivers | |
1330 | * that support runtime_pm or need the CRTC to be enabled to perform a | |
1331 | * commit. Otherwise, one should use the default implementation | |
1332 | * drm_atomic_helper_commit_tail(). | |
1333 | */ | |
1334 | void drm_atomic_helper_commit_tail_rpm(struct drm_atomic_state *old_state) | |
1335 | { | |
1336 | struct drm_device *dev = old_state->dev; | |
1337 | ||
1338 | drm_atomic_helper_commit_modeset_disables(dev, old_state); | |
1339 | ||
1340 | drm_atomic_helper_commit_modeset_enables(dev, old_state); | |
1341 | ||
1342 | drm_atomic_helper_commit_planes(dev, old_state, | |
1343 | DRM_PLANE_COMMIT_ACTIVE_ONLY); | |
1344 | ||
1345 | drm_atomic_helper_commit_hw_done(old_state); | |
1346 | ||
1347 | drm_atomic_helper_wait_for_vblanks(dev, old_state); | |
1348 | ||
1349 | drm_atomic_helper_cleanup_planes(dev, old_state); | |
1350 | } | |
1351 | EXPORT_SYMBOL(drm_atomic_helper_commit_tail_rpm); | |
1352 | ||
1ea0c02e | 1353 | static void commit_tail(struct drm_atomic_state *old_state) |
9f2a7950 | 1354 | { |
1ea0c02e | 1355 | struct drm_device *dev = old_state->dev; |
a4b10cce | 1356 | const struct drm_mode_config_helper_funcs *funcs; |
9f2a7950 DV |
1357 | |
1358 | funcs = dev->mode_config.helper_private; | |
1359 | ||
1ea0c02e | 1360 | drm_atomic_helper_wait_for_fences(dev, old_state, false); |
9f2a7950 | 1361 | |
1ea0c02e | 1362 | drm_atomic_helper_wait_for_dependencies(old_state); |
9f2a7950 DV |
1363 | |
1364 | if (funcs && funcs->atomic_commit_tail) | |
1ea0c02e | 1365 | funcs->atomic_commit_tail(old_state); |
9f2a7950 | 1366 | else |
1ea0c02e | 1367 | drm_atomic_helper_commit_tail(old_state); |
9f2a7950 | 1368 | |
1ea0c02e | 1369 | drm_atomic_helper_commit_cleanup_done(old_state); |
9f2a7950 | 1370 | |
1ea0c02e | 1371 | drm_atomic_state_put(old_state); |
9f2a7950 DV |
1372 | } |
1373 | ||
1374 | static void commit_work(struct work_struct *work) | |
1375 | { | |
1376 | struct drm_atomic_state *state = container_of(work, | |
1377 | struct drm_atomic_state, | |
1378 | commit_work); | |
1379 | commit_tail(state); | |
1380 | } | |
1381 | ||
fef9df8b GP |
1382 | /** |
1383 | * drm_atomic_helper_async_check - check if state can be commited asynchronously | |
1384 | * @dev: DRM device | |
1385 | * @state: the driver state object | |
1386 | * | |
1387 | * This helper will check if it is possible to commit the state asynchronously. | |
1388 | * Async commits are not supposed to swap the states like normal sync commits | |
1389 | * but just do in-place changes on the current state. | |
1390 | * | |
1391 | * It will return 0 if the commit can happen in an asynchronous fashion or error | |
1392 | * if not. Note that error just mean it can't be commited asynchronously, if it | |
1393 | * fails the commit should be treated like a normal synchronous commit. | |
1394 | */ | |
1395 | int drm_atomic_helper_async_check(struct drm_device *dev, | |
1396 | struct drm_atomic_state *state) | |
1397 | { | |
1398 | struct drm_crtc *crtc; | |
1399 | struct drm_crtc_state *crtc_state; | |
669c9215 ML |
1400 | struct drm_plane *plane; |
1401 | struct drm_plane_state *old_plane_state, *new_plane_state; | |
fef9df8b | 1402 | const struct drm_plane_helper_funcs *funcs; |
669c9215 | 1403 | int i, n_planes = 0; |
fef9df8b GP |
1404 | |
1405 | for_each_new_crtc_in_state(state, crtc, crtc_state, i) { | |
1406 | if (drm_atomic_crtc_needs_modeset(crtc_state)) | |
1407 | return -EINVAL; | |
1408 | } | |
1409 | ||
669c9215 | 1410 | for_each_oldnew_plane_in_state(state, plane, old_plane_state, new_plane_state, i) |
fef9df8b | 1411 | n_planes++; |
fef9df8b GP |
1412 | |
1413 | /* FIXME: we support only single plane updates for now */ | |
669c9215 | 1414 | if (n_planes != 1) |
fef9df8b GP |
1415 | return -EINVAL; |
1416 | ||
669c9215 | 1417 | if (!new_plane_state->crtc) |
fef9df8b GP |
1418 | return -EINVAL; |
1419 | ||
1420 | funcs = plane->helper_private; | |
1421 | if (!funcs->atomic_async_update) | |
1422 | return -EINVAL; | |
1423 | ||
669c9215 | 1424 | if (new_plane_state->fence) |
fef9df8b GP |
1425 | return -EINVAL; |
1426 | ||
1427 | /* | |
1428 | * Don't do an async update if there is an outstanding commit modifying | |
1429 | * the plane. This prevents our async update's changes from getting | |
1430 | * overridden by a previous synchronous update's state. | |
1431 | */ | |
669c9215 ML |
1432 | if (old_plane_state->commit && |
1433 | !try_wait_for_completion(&old_plane_state->commit->hw_done)) | |
1434 | return -EBUSY; | |
fef9df8b | 1435 | |
669c9215 | 1436 | return funcs->atomic_async_check(plane, new_plane_state); |
fef9df8b GP |
1437 | } |
1438 | EXPORT_SYMBOL(drm_atomic_helper_async_check); | |
1439 | ||
1440 | /** | |
1441 | * drm_atomic_helper_async_commit - commit state asynchronously | |
1442 | * @dev: DRM device | |
1443 | * @state: the driver state object | |
1444 | * | |
1445 | * This function commits a state asynchronously, i.e., not vblank | |
1446 | * synchronized. It should be used on a state only when | |
1447 | * drm_atomic_async_check() succeeds. Async commits are not supposed to swap | |
1448 | * the states like normal sync commits, but just do in-place changes on the | |
1449 | * current state. | |
1450 | */ | |
1451 | void drm_atomic_helper_async_commit(struct drm_device *dev, | |
1452 | struct drm_atomic_state *state) | |
1453 | { | |
1454 | struct drm_plane *plane; | |
1455 | struct drm_plane_state *plane_state; | |
1456 | const struct drm_plane_helper_funcs *funcs; | |
1457 | int i; | |
1458 | ||
1459 | for_each_new_plane_in_state(state, plane, plane_state, i) { | |
1460 | funcs = plane->helper_private; | |
1461 | funcs->atomic_async_update(plane, plane_state); | |
1462 | } | |
1463 | } | |
1464 | EXPORT_SYMBOL(drm_atomic_helper_async_commit); | |
1465 | ||
9f2a7950 DV |
1466 | /** |
1467 | * drm_atomic_helper_commit - commit validated state object | |
1468 | * @dev: DRM device | |
1469 | * @state: the driver state object | |
1470 | * @nonblock: whether nonblocking behavior is requested. | |
1471 | * | |
1472 | * This function commits a with drm_atomic_helper_check() pre-validated state | |
1473 | * object. This can still fail when e.g. the framebuffer reservation fails. This | |
1474 | * function implements nonblocking commits, using | |
1475 | * drm_atomic_helper_setup_commit() and related functions. | |
1476 | * | |
9f2a7950 | 1477 | * Committing the actual hardware state is done through the |
6806cdf9 DV |
1478 | * &drm_mode_config_helper_funcs.atomic_commit_tail callback, or it's default |
1479 | * implementation drm_atomic_helper_commit_tail(). | |
6e48ae32 | 1480 | * |
c39032a8 | 1481 | * RETURNS: |
623369e5 DV |
1482 | * Zero for success or -errno. |
1483 | */ | |
1484 | int drm_atomic_helper_commit(struct drm_device *dev, | |
1485 | struct drm_atomic_state *state, | |
286dbb8d | 1486 | bool nonblock) |
623369e5 DV |
1487 | { |
1488 | int ret; | |
1489 | ||
fef9df8b GP |
1490 | if (state->async_update) { |
1491 | ret = drm_atomic_helper_prepare_planes(dev, state); | |
1492 | if (ret) | |
1493 | return ret; | |
1494 | ||
1495 | drm_atomic_helper_async_commit(dev, state); | |
1496 | drm_atomic_helper_cleanup_planes(dev, state); | |
1497 | ||
1498 | return 0; | |
1499 | } | |
1500 | ||
a095caa7 DV |
1501 | ret = drm_atomic_helper_setup_commit(state, nonblock); |
1502 | if (ret) | |
1503 | return ret; | |
1504 | ||
9f2a7950 DV |
1505 | INIT_WORK(&state->commit_work, commit_work); |
1506 | ||
623369e5 DV |
1507 | ret = drm_atomic_helper_prepare_planes(dev, state); |
1508 | if (ret) | |
1509 | return ret; | |
1510 | ||
f6ce410a GP |
1511 | if (!nonblock) { |
1512 | ret = drm_atomic_helper_wait_for_fences(dev, state, true); | |
c066d231 ML |
1513 | if (ret) |
1514 | goto err; | |
f6ce410a GP |
1515 | } |
1516 | ||
623369e5 DV |
1517 | /* |
1518 | * This is the point of no return - everything below never fails except | |
1519 | * when the hw goes bonghits. Which means we can commit the new state on | |
1520 | * the software side now. | |
1521 | */ | |
1522 | ||
c066d231 ML |
1523 | ret = drm_atomic_helper_swap_state(state, true); |
1524 | if (ret) | |
1525 | goto err; | |
623369e5 DV |
1526 | |
1527 | /* | |
1528 | * Everything below can be run asynchronously without the need to grab | |
f98bd3ef | 1529 | * any modeset locks at all under one condition: It must be guaranteed |
623369e5 DV |
1530 | * that the asynchronous work has either been cancelled (if the driver |
1531 | * supports it, which at least requires that the framebuffers get | |
1532 | * cleaned up with drm_atomic_helper_cleanup_planes()) or completed | |
1533 | * before the new state gets committed on the software side with | |
1534 | * drm_atomic_helper_swap_state(). | |
1535 | * | |
1536 | * This scheme allows new atomic state updates to be prepared and | |
1537 | * checked in parallel to the asynchronous completion of the previous | |
1538 | * update. Which is important since compositors need to figure out the | |
1539 | * composition of the next frame right after having submitted the | |
1540 | * current layout. | |
9f2a7950 DV |
1541 | * |
1542 | * NOTE: Commit work has multiple phases, first hardware commit, then | |
1543 | * cleanup. We want them to overlap, hence need system_unbound_wq to | |
1544 | * make sure work items don't artifically stall on each another. | |
623369e5 DV |
1545 | */ |
1546 | ||
0853695c | 1547 | drm_atomic_state_get(state); |
9f2a7950 DV |
1548 | if (nonblock) |
1549 | queue_work(system_unbound_wq, &state->commit_work); | |
1550 | else | |
1551 | commit_tail(state); | |
623369e5 DV |
1552 | |
1553 | return 0; | |
c066d231 ML |
1554 | |
1555 | err: | |
1556 | drm_atomic_helper_cleanup_planes(dev, state); | |
1557 | return ret; | |
623369e5 DV |
1558 | } |
1559 | EXPORT_SYMBOL(drm_atomic_helper_commit); | |
1560 | ||
e8c833a7 | 1561 | /** |
286dbb8d | 1562 | * DOC: implementing nonblocking commit |
e8c833a7 | 1563 | * |
9f2a7950 | 1564 | * Nonblocking atomic commits have to be implemented in the following sequence: |
e8c833a7 DV |
1565 | * |
1566 | * 1. Run drm_atomic_helper_prepare_planes() first. This is the only function | |
1567 | * which commit needs to call which can fail, so we want to run it first and | |
1568 | * synchronously. | |
1569 | * | |
286dbb8d | 1570 | * 2. Synchronize with any outstanding nonblocking commit worker threads which |
e8c833a7 DV |
1571 | * might be affected the new state update. This can be done by either cancelling |
1572 | * or flushing the work items, depending upon whether the driver can deal with | |
1573 | * cancelled updates. Note that it is important to ensure that the framebuffer | |
1574 | * cleanup is still done when cancelling. | |
1575 | * | |
9f2a7950 DV |
1576 | * Asynchronous workers need to have sufficient parallelism to be able to run |
1577 | * different atomic commits on different CRTCs in parallel. The simplest way to | |
1578 | * achive this is by running them on the &system_unbound_wq work queue. Note | |
1579 | * that drivers are not required to split up atomic commits and run an | |
1580 | * individual commit in parallel - userspace is supposed to do that if it cares. | |
1581 | * But it might be beneficial to do that for modesets, since those necessarily | |
1582 | * must be done as one global operation, and enabling or disabling a CRTC can | |
1583 | * take a long time. But even that is not required. | |
e8c833a7 DV |
1584 | * |
1585 | * 3. The software state is updated synchronously with | |
26196f7e | 1586 | * drm_atomic_helper_swap_state(). Doing this under the protection of all modeset |
e8c833a7 | 1587 | * locks means concurrent callers never see inconsistent state. And doing this |
286dbb8d ML |
1588 | * while it's guaranteed that no relevant nonblocking worker runs means that |
1589 | * nonblocking workers do not need grab any locks. Actually they must not grab | |
1590 | * locks, for otherwise the work flushing will deadlock. | |
e8c833a7 DV |
1591 | * |
1592 | * 4. Schedule a work item to do all subsequent steps, using the split-out | |
1593 | * commit helpers: a) pre-plane commit b) plane commit c) post-plane commit and | |
1594 | * then cleaning up the framebuffers after the old framebuffer is no longer | |
1595 | * being displayed. | |
9f2a7950 DV |
1596 | * |
1597 | * The above scheme is implemented in the atomic helper libraries in | |
1598 | * drm_atomic_helper_commit() using a bunch of helper functions. See | |
1599 | * drm_atomic_helper_setup_commit() for a starting point. | |
e8c833a7 DV |
1600 | */ |
1601 | ||
a095caa7 DV |
1602 | static int stall_checks(struct drm_crtc *crtc, bool nonblock) |
1603 | { | |
1604 | struct drm_crtc_commit *commit, *stall_commit = NULL; | |
1605 | bool completed = true; | |
1606 | int i; | |
1607 | long ret = 0; | |
1608 | ||
1609 | spin_lock(&crtc->commit_lock); | |
1610 | i = 0; | |
1611 | list_for_each_entry(commit, &crtc->commit_list, commit_entry) { | |
1612 | if (i == 0) { | |
1613 | completed = try_wait_for_completion(&commit->flip_done); | |
1614 | /* Userspace is not allowed to get ahead of the previous | |
1615 | * commit with nonblocking ones. */ | |
1616 | if (!completed && nonblock) { | |
1617 | spin_unlock(&crtc->commit_lock); | |
1618 | return -EBUSY; | |
1619 | } | |
1620 | } else if (i == 1) { | |
f46640b9 | 1621 | stall_commit = drm_crtc_commit_get(commit); |
a095caa7 | 1622 | break; |
723c3e55 | 1623 | } |
a095caa7 DV |
1624 | |
1625 | i++; | |
1626 | } | |
1627 | spin_unlock(&crtc->commit_lock); | |
1628 | ||
1629 | if (!stall_commit) | |
1630 | return 0; | |
1631 | ||
1632 | /* We don't want to let commits get ahead of cleanup work too much, | |
1633 | * stalling on 2nd previous commit means triple-buffer won't ever stall. | |
1634 | */ | |
723c3e55 | 1635 | ret = wait_for_completion_interruptible_timeout(&stall_commit->cleanup_done, |
a095caa7 DV |
1636 | 10*HZ); |
1637 | if (ret == 0) | |
1638 | DRM_ERROR("[CRTC:%d:%s] cleanup_done timed out\n", | |
1639 | crtc->base.id, crtc->name); | |
1640 | ||
1641 | drm_crtc_commit_put(stall_commit); | |
1642 | ||
1643 | return ret < 0 ? ret : 0; | |
1644 | } | |
1645 | ||
899cc5f1 | 1646 | static void release_crtc_commit(struct completion *completion) |
24835e44 DV |
1647 | { |
1648 | struct drm_crtc_commit *commit = container_of(completion, | |
1649 | typeof(*commit), | |
1650 | flip_done); | |
1651 | ||
1652 | drm_crtc_commit_put(commit); | |
1653 | } | |
1654 | ||
21a01abb ML |
1655 | static void init_commit(struct drm_crtc_commit *commit, struct drm_crtc *crtc) |
1656 | { | |
1657 | init_completion(&commit->flip_done); | |
1658 | init_completion(&commit->hw_done); | |
1659 | init_completion(&commit->cleanup_done); | |
1660 | INIT_LIST_HEAD(&commit->commit_entry); | |
1661 | kref_init(&commit->ref); | |
1662 | commit->crtc = crtc; | |
1663 | } | |
1664 | ||
1665 | static struct drm_crtc_commit * | |
1666 | crtc_or_fake_commit(struct drm_atomic_state *state, struct drm_crtc *crtc) | |
1667 | { | |
1668 | if (crtc) { | |
1669 | struct drm_crtc_state *new_crtc_state; | |
1670 | ||
1671 | new_crtc_state = drm_atomic_get_new_crtc_state(state, crtc); | |
1672 | ||
1673 | return new_crtc_state->commit; | |
1674 | } | |
1675 | ||
1676 | if (!state->fake_commit) { | |
1677 | state->fake_commit = kzalloc(sizeof(*state->fake_commit), GFP_KERNEL); | |
1678 | if (!state->fake_commit) | |
1679 | return NULL; | |
1680 | ||
1681 | init_commit(state->fake_commit, NULL); | |
1682 | } | |
1683 | ||
1684 | return state->fake_commit; | |
1685 | } | |
1686 | ||
a095caa7 DV |
1687 | /** |
1688 | * drm_atomic_helper_setup_commit - setup possibly nonblocking commit | |
1689 | * @state: new modeset state to be committed | |
1690 | * @nonblock: whether nonblocking behavior is requested. | |
1691 | * | |
1692 | * This function prepares @state to be used by the atomic helper's support for | |
1693 | * nonblocking commits. Drivers using the nonblocking commit infrastructure | |
6806cdf9 DV |
1694 | * should always call this function from their |
1695 | * &drm_mode_config_funcs.atomic_commit hook. | |
a095caa7 DV |
1696 | * |
1697 | * To be able to use this support drivers need to use a few more helper | |
1698 | * functions. drm_atomic_helper_wait_for_dependencies() must be called before | |
1699 | * actually committing the hardware state, and for nonblocking commits this call | |
1700 | * must be placed in the async worker. See also drm_atomic_helper_swap_state() | |
1701 | * and it's stall parameter, for when a driver's commit hooks look at the | |
6806cdf9 | 1702 | * &drm_crtc.state, &drm_plane.state or &drm_connector.state pointer directly. |
a095caa7 DV |
1703 | * |
1704 | * Completion of the hardware commit step must be signalled using | |
1705 | * drm_atomic_helper_commit_hw_done(). After this step the driver is not allowed | |
1706 | * to read or change any permanent software or hardware modeset state. The only | |
1707 | * exception is state protected by other means than &drm_modeset_lock locks. | |
1708 | * Only the free standing @state with pointers to the old state structures can | |
1709 | * be inspected, e.g. to clean up old buffers using | |
1710 | * drm_atomic_helper_cleanup_planes(). | |
1711 | * | |
1712 | * At the very end, before cleaning up @state drivers must call | |
1713 | * drm_atomic_helper_commit_cleanup_done(). | |
1714 | * | |
1715 | * This is all implemented by in drm_atomic_helper_commit(), giving drivers a | |
9ac07815 | 1716 | * complete and easy-to-use default implementation of the atomic_commit() hook. |
a095caa7 DV |
1717 | * |
1718 | * The tracking of asynchronously executed and still pending commits is done | |
1719 | * using the core structure &drm_crtc_commit. | |
1720 | * | |
1721 | * By default there's no need to clean up resources allocated by this function | |
1722 | * explicitly: drm_atomic_state_default_clear() will take care of that | |
1723 | * automatically. | |
1724 | * | |
1725 | * Returns: | |
1726 | * | |
1727 | * 0 on success. -EBUSY when userspace schedules nonblocking commits too fast, | |
1728 | * -ENOMEM on allocation failures and -EINTR when a signal is pending. | |
1729 | */ | |
1730 | int drm_atomic_helper_setup_commit(struct drm_atomic_state *state, | |
1731 | bool nonblock) | |
1732 | { | |
1733 | struct drm_crtc *crtc; | |
415c3ac3 | 1734 | struct drm_crtc_state *old_crtc_state, *new_crtc_state; |
21a01abb ML |
1735 | struct drm_connector *conn; |
1736 | struct drm_connector_state *old_conn_state, *new_conn_state; | |
1737 | struct drm_plane *plane; | |
1738 | struct drm_plane_state *old_plane_state, *new_plane_state; | |
a095caa7 DV |
1739 | struct drm_crtc_commit *commit; |
1740 | int i, ret; | |
1741 | ||
415c3ac3 | 1742 | for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) { |
a095caa7 DV |
1743 | commit = kzalloc(sizeof(*commit), GFP_KERNEL); |
1744 | if (!commit) | |
1745 | return -ENOMEM; | |
1746 | ||
21a01abb | 1747 | init_commit(commit, crtc); |
a095caa7 | 1748 | |
163bcc2c | 1749 | new_crtc_state->commit = commit; |
a095caa7 DV |
1750 | |
1751 | ret = stall_checks(crtc, nonblock); | |
1752 | if (ret) | |
1753 | return ret; | |
1754 | ||
1755 | /* Drivers only send out events when at least either current or | |
1756 | * new CRTC state is active. Complete right away if everything | |
1757 | * stays off. */ | |
415c3ac3 | 1758 | if (!old_crtc_state->active && !new_crtc_state->active) { |
a095caa7 DV |
1759 | complete_all(&commit->flip_done); |
1760 | continue; | |
1761 | } | |
1762 | ||
1763 | /* Legacy cursor updates are fully unsynced. */ | |
1764 | if (state->legacy_cursor_update) { | |
1765 | complete_all(&commit->flip_done); | |
1766 | continue; | |
1767 | } | |
1768 | ||
415c3ac3 | 1769 | if (!new_crtc_state->event) { |
a095caa7 DV |
1770 | commit->event = kzalloc(sizeof(*commit->event), |
1771 | GFP_KERNEL); | |
1772 | if (!commit->event) | |
1773 | return -ENOMEM; | |
1774 | ||
415c3ac3 | 1775 | new_crtc_state->event = commit->event; |
a095caa7 DV |
1776 | } |
1777 | ||
415c3ac3 ML |
1778 | new_crtc_state->event->base.completion = &commit->flip_done; |
1779 | new_crtc_state->event->base.completion_release = release_crtc_commit; | |
24835e44 | 1780 | drm_crtc_commit_get(commit); |
a095caa7 DV |
1781 | } |
1782 | ||
21a01abb | 1783 | for_each_oldnew_connector_in_state(state, conn, old_conn_state, new_conn_state, i) { |
21a01abb ML |
1784 | /* Userspace is not allowed to get ahead of the previous |
1785 | * commit with nonblocking ones. */ | |
1786 | if (nonblock && old_conn_state->commit && | |
1787 | !try_wait_for_completion(&old_conn_state->commit->flip_done)) | |
1788 | return -EBUSY; | |
a095caa7 | 1789 | |
080de2e5 ML |
1790 | /* commit tracked through new_crtc_state->commit, no need to do it explicitly */ |
1791 | if (new_conn_state->crtc) | |
1792 | continue; | |
1793 | ||
21a01abb ML |
1794 | commit = crtc_or_fake_commit(state, old_conn_state->crtc); |
1795 | if (!commit) | |
1796 | return -ENOMEM; | |
a095caa7 | 1797 | |
21a01abb ML |
1798 | new_conn_state->commit = drm_crtc_commit_get(commit); |
1799 | } | |
1800 | ||
1801 | for_each_oldnew_plane_in_state(state, plane, old_plane_state, new_plane_state, i) { | |
21a01abb ML |
1802 | /* Userspace is not allowed to get ahead of the previous |
1803 | * commit with nonblocking ones. */ | |
1804 | if (nonblock && old_plane_state->commit && | |
1805 | !try_wait_for_completion(&old_plane_state->commit->flip_done)) | |
1806 | return -EBUSY; | |
1807 | ||
080de2e5 ML |
1808 | /* |
1809 | * Unlike connectors, always track planes explicitly for | |
1810 | * async pageflip support. | |
1811 | */ | |
4edd6084 | 1812 | commit = crtc_or_fake_commit(state, new_plane_state->crtc ?: old_plane_state->crtc); |
21a01abb ML |
1813 | if (!commit) |
1814 | return -ENOMEM; | |
1815 | ||
1816 | new_plane_state->commit = drm_crtc_commit_get(commit); | |
a095caa7 DV |
1817 | } |
1818 | ||
a095caa7 | 1819 | return 0; |
a095caa7 | 1820 | } |
a095caa7 | 1821 | EXPORT_SYMBOL(drm_atomic_helper_setup_commit); |
a095caa7 DV |
1822 | |
1823 | /** | |
1824 | * drm_atomic_helper_wait_for_dependencies - wait for required preceeding commits | |
1ea0c02e | 1825 | * @old_state: atomic state object with old state structures |
a095caa7 DV |
1826 | * |
1827 | * This function waits for all preceeding commits that touch the same CRTC as | |
1ea0c02e | 1828 | * @old_state to both be committed to the hardware (as signalled by |
a095caa7 | 1829 | * drm_atomic_helper_commit_hw_done) and executed by the hardware (as signalled |
277b09cf | 1830 | * by calling drm_crtc_send_vblank_event() on the &drm_crtc_state.event). |
a095caa7 DV |
1831 | * |
1832 | * This is part of the atomic helper support for nonblocking commits, see | |
1833 | * drm_atomic_helper_setup_commit() for an overview. | |
1834 | */ | |
1ea0c02e | 1835 | void drm_atomic_helper_wait_for_dependencies(struct drm_atomic_state *old_state) |
a095caa7 DV |
1836 | { |
1837 | struct drm_crtc *crtc; | |
163bcc2c | 1838 | struct drm_crtc_state *old_crtc_state; |
21a01abb ML |
1839 | struct drm_plane *plane; |
1840 | struct drm_plane_state *old_plane_state; | |
1841 | struct drm_connector *conn; | |
1842 | struct drm_connector_state *old_conn_state; | |
a095caa7 DV |
1843 | struct drm_crtc_commit *commit; |
1844 | int i; | |
1845 | long ret; | |
1846 | ||
163bcc2c ML |
1847 | for_each_old_crtc_in_state(old_state, crtc, old_crtc_state, i) { |
1848 | commit = old_crtc_state->commit; | |
a095caa7 DV |
1849 | |
1850 | if (!commit) | |
1851 | continue; | |
1852 | ||
1853 | ret = wait_for_completion_timeout(&commit->hw_done, | |
1854 | 10*HZ); | |
1855 | if (ret == 0) | |
1856 | DRM_ERROR("[CRTC:%d:%s] hw_done timed out\n", | |
1857 | crtc->base.id, crtc->name); | |
1858 | ||
1859 | /* Currently no support for overwriting flips, hence | |
1860 | * stall for previous one to execute completely. */ | |
1861 | ret = wait_for_completion_timeout(&commit->flip_done, | |
1862 | 10*HZ); | |
1863 | if (ret == 0) | |
1864 | DRM_ERROR("[CRTC:%d:%s] flip_done timed out\n", | |
1865 | crtc->base.id, crtc->name); | |
a095caa7 | 1866 | } |
21a01abb ML |
1867 | |
1868 | for_each_old_connector_in_state(old_state, conn, old_conn_state, i) { | |
1869 | commit = old_conn_state->commit; | |
a095caa7 | 1870 | |
21a01abb ML |
1871 | if (!commit) |
1872 | continue; | |
1873 | ||
1874 | ret = wait_for_completion_timeout(&commit->hw_done, | |
1875 | 10*HZ); | |
1876 | if (ret == 0) | |
1877 | DRM_ERROR("[CONNECTOR:%d:%s] hw_done timed out\n", | |
1878 | conn->base.id, conn->name); | |
1879 | ||
1880 | /* Currently no support for overwriting flips, hence | |
1881 | * stall for previous one to execute completely. */ | |
1882 | ret = wait_for_completion_timeout(&commit->flip_done, | |
1883 | 10*HZ); | |
1884 | if (ret == 0) | |
1885 | DRM_ERROR("[CONNECTOR:%d:%s] flip_done timed out\n", | |
1886 | conn->base.id, conn->name); | |
1887 | } | |
1888 | ||
1889 | for_each_old_plane_in_state(old_state, plane, old_plane_state, i) { | |
1890 | commit = old_plane_state->commit; | |
1891 | ||
1892 | if (!commit) | |
1893 | continue; | |
1894 | ||
1895 | ret = wait_for_completion_timeout(&commit->hw_done, | |
1896 | 10*HZ); | |
1897 | if (ret == 0) | |
1898 | DRM_ERROR("[PLANE:%d:%s] hw_done timed out\n", | |
1899 | plane->base.id, plane->name); | |
1900 | ||
1901 | /* Currently no support for overwriting flips, hence | |
1902 | * stall for previous one to execute completely. */ | |
1903 | ret = wait_for_completion_timeout(&commit->flip_done, | |
1904 | 10*HZ); | |
1905 | if (ret == 0) | |
1906 | DRM_ERROR("[PLANE:%d:%s] flip_done timed out\n", | |
1907 | plane->base.id, plane->name); | |
a095caa7 DV |
1908 | } |
1909 | } | |
1910 | EXPORT_SYMBOL(drm_atomic_helper_wait_for_dependencies); | |
1911 | ||
1912 | /** | |
1913 | * drm_atomic_helper_commit_hw_done - setup possible nonblocking commit | |
1ea0c02e | 1914 | * @old_state: atomic state object with old state structures |
a095caa7 DV |
1915 | * |
1916 | * This function is used to signal completion of the hardware commit step. After | |
1917 | * this step the driver is not allowed to read or change any permanent software | |
1918 | * or hardware modeset state. The only exception is state protected by other | |
1919 | * means than &drm_modeset_lock locks. | |
1920 | * | |
1921 | * Drivers should try to postpone any expensive or delayed cleanup work after | |
1922 | * this function is called. | |
1923 | * | |
1924 | * This is part of the atomic helper support for nonblocking commits, see | |
1925 | * drm_atomic_helper_setup_commit() for an overview. | |
1926 | */ | |
1ea0c02e | 1927 | void drm_atomic_helper_commit_hw_done(struct drm_atomic_state *old_state) |
a095caa7 DV |
1928 | { |
1929 | struct drm_crtc *crtc; | |
163bcc2c | 1930 | struct drm_crtc_state *old_crtc_state, *new_crtc_state; |
a095caa7 DV |
1931 | struct drm_crtc_commit *commit; |
1932 | int i; | |
1933 | ||
163bcc2c ML |
1934 | for_each_oldnew_crtc_in_state(old_state, crtc, old_crtc_state, new_crtc_state, i) { |
1935 | commit = new_crtc_state->commit; | |
a095caa7 DV |
1936 | if (!commit) |
1937 | continue; | |
1938 | ||
163bcc2c ML |
1939 | /* |
1940 | * copy new_crtc_state->commit to old_crtc_state->commit, | |
1941 | * it's unsafe to touch new_crtc_state after hw_done, | |
1942 | * but we still need to do so in cleanup_done(). | |
1943 | */ | |
1944 | if (old_crtc_state->commit) | |
1945 | drm_crtc_commit_put(old_crtc_state->commit); | |
1946 | ||
1947 | old_crtc_state->commit = drm_crtc_commit_get(commit); | |
1948 | ||
a095caa7 | 1949 | /* backend must have consumed any event by now */ |
415c3ac3 | 1950 | WARN_ON(new_crtc_state->event); |
a095caa7 | 1951 | complete_all(&commit->hw_done); |
a095caa7 | 1952 | } |
21a01abb ML |
1953 | |
1954 | if (old_state->fake_commit) { | |
1955 | complete_all(&old_state->fake_commit->hw_done); | |
1956 | complete_all(&old_state->fake_commit->flip_done); | |
1957 | } | |
a095caa7 DV |
1958 | } |
1959 | EXPORT_SYMBOL(drm_atomic_helper_commit_hw_done); | |
1960 | ||
1961 | /** | |
1962 | * drm_atomic_helper_commit_cleanup_done - signal completion of commit | |
1ea0c02e | 1963 | * @old_state: atomic state object with old state structures |
a095caa7 | 1964 | * |
1ea0c02e DV |
1965 | * This signals completion of the atomic update @old_state, including any |
1966 | * cleanup work. If used, it must be called right before calling | |
0853695c | 1967 | * drm_atomic_state_put(). |
a095caa7 DV |
1968 | * |
1969 | * This is part of the atomic helper support for nonblocking commits, see | |
1970 | * drm_atomic_helper_setup_commit() for an overview. | |
1971 | */ | |
1ea0c02e | 1972 | void drm_atomic_helper_commit_cleanup_done(struct drm_atomic_state *old_state) |
a095caa7 DV |
1973 | { |
1974 | struct drm_crtc *crtc; | |
163bcc2c | 1975 | struct drm_crtc_state *old_crtc_state; |
a095caa7 DV |
1976 | struct drm_crtc_commit *commit; |
1977 | int i; | |
a095caa7 | 1978 | |
163bcc2c ML |
1979 | for_each_old_crtc_in_state(old_state, crtc, old_crtc_state, i) { |
1980 | commit = old_crtc_state->commit; | |
a095caa7 DV |
1981 | if (WARN_ON(!commit)) |
1982 | continue; | |
1983 | ||
a095caa7 DV |
1984 | complete_all(&commit->cleanup_done); |
1985 | WARN_ON(!try_wait_for_completion(&commit->hw_done)); | |
1986 | ||
7141fd3e | 1987 | spin_lock(&crtc->commit_lock); |
a095caa7 DV |
1988 | list_del(&commit->commit_entry); |
1989 | spin_unlock(&crtc->commit_lock); | |
1990 | } | |
21a01abb ML |
1991 | |
1992 | if (old_state->fake_commit) | |
1993 | complete_all(&old_state->fake_commit->cleanup_done); | |
a095caa7 DV |
1994 | } |
1995 | EXPORT_SYMBOL(drm_atomic_helper_commit_cleanup_done); | |
1996 | ||
c2fcd274 | 1997 | /** |
2e3afd47 | 1998 | * drm_atomic_helper_prepare_planes - prepare plane resources before commit |
c2fcd274 | 1999 | * @dev: DRM device |
2e3afd47 | 2000 | * @state: atomic state object with new state structures |
c2fcd274 DV |
2001 | * |
2002 | * This function prepares plane state, specifically framebuffers, for the new | |
6806cdf9 DV |
2003 | * configuration, by calling &drm_plane_helper_funcs.prepare_fb. If any failure |
2004 | * is encountered this function will call &drm_plane_helper_funcs.cleanup_fb on | |
2005 | * any already successfully prepared framebuffer. | |
c2fcd274 DV |
2006 | * |
2007 | * Returns: | |
2008 | * 0 on success, negative error code on failure. | |
2009 | */ | |
2010 | int drm_atomic_helper_prepare_planes(struct drm_device *dev, | |
2011 | struct drm_atomic_state *state) | |
2012 | { | |
be9174a4 | 2013 | struct drm_plane *plane; |
415c3ac3 | 2014 | struct drm_plane_state *new_plane_state; |
be9174a4 | 2015 | int ret, i, j; |
c2fcd274 | 2016 | |
415c3ac3 | 2017 | for_each_new_plane_in_state(state, plane, new_plane_state, i) { |
b5ceff20 | 2018 | const struct drm_plane_helper_funcs *funcs; |
c2fcd274 DV |
2019 | |
2020 | funcs = plane->helper_private; | |
2021 | ||
844f9111 | 2022 | if (funcs->prepare_fb) { |
415c3ac3 | 2023 | ret = funcs->prepare_fb(plane, new_plane_state); |
c2fcd274 DV |
2024 | if (ret) |
2025 | goto fail; | |
2026 | } | |
2027 | } | |
2028 | ||
2029 | return 0; | |
2030 | ||
2031 | fail: | |
415c3ac3 | 2032 | for_each_new_plane_in_state(state, plane, new_plane_state, j) { |
b5ceff20 | 2033 | const struct drm_plane_helper_funcs *funcs; |
c2fcd274 | 2034 | |
be9174a4 | 2035 | if (j >= i) |
c2fcd274 DV |
2036 | continue; |
2037 | ||
2038 | funcs = plane->helper_private; | |
2039 | ||
844f9111 | 2040 | if (funcs->cleanup_fb) |
415c3ac3 | 2041 | funcs->cleanup_fb(plane, new_plane_state); |
c2fcd274 DV |
2042 | } |
2043 | ||
2044 | return ret; | |
2045 | } | |
2046 | EXPORT_SYMBOL(drm_atomic_helper_prepare_planes); | |
2047 | ||
7135ac54 | 2048 | static bool plane_crtc_active(const struct drm_plane_state *state) |
aef9dbb8 DV |
2049 | { |
2050 | return state->crtc && state->crtc->state->active; | |
2051 | } | |
2052 | ||
c2fcd274 DV |
2053 | /** |
2054 | * drm_atomic_helper_commit_planes - commit plane state | |
2055 | * @dev: DRM device | |
b0fcfc89 | 2056 | * @old_state: atomic state object with old state structures |
2b58e98d | 2057 | * @flags: flags for committing plane state |
c2fcd274 DV |
2058 | * |
2059 | * This function commits the new plane state using the plane and atomic helper | |
2060 | * functions for planes and crtcs. It assumes that the atomic state has already | |
2061 | * been pushed into the relevant object state pointers, since this step can no | |
2062 | * longer fail. | |
2063 | * | |
b0fcfc89 | 2064 | * It still requires the global state object @old_state to know which planes and |
c2fcd274 | 2065 | * crtcs need to be updated though. |
de28d021 ML |
2066 | * |
2067 | * Note that this function does all plane updates across all CRTCs in one step. | |
2068 | * If the hardware can't support this approach look at | |
2069 | * drm_atomic_helper_commit_planes_on_crtc() instead. | |
6e48ae32 DV |
2070 | * |
2071 | * Plane parameters can be updated by applications while the associated CRTC is | |
2072 | * disabled. The DRM/KMS core will store the parameters in the plane state, | |
2073 | * which will be available to the driver when the CRTC is turned on. As a result | |
2074 | * most drivers don't need to be immediately notified of plane updates for a | |
2075 | * disabled CRTC. | |
2076 | * | |
2b58e98d LY |
2077 | * Unless otherwise needed, drivers are advised to set the ACTIVE_ONLY flag in |
2078 | * @flags in order not to receive plane update notifications related to a | |
2079 | * disabled CRTC. This avoids the need to manually ignore plane updates in | |
6e48ae32 DV |
2080 | * driver code when the driver and/or hardware can't or just don't need to deal |
2081 | * with updates on disabled CRTCs, for example when supporting runtime PM. | |
2082 | * | |
2b58e98d LY |
2083 | * Drivers may set the NO_DISABLE_AFTER_MODESET flag in @flags if the relevant |
2084 | * display controllers require to disable a CRTC's planes when the CRTC is | |
6806cdf9 DV |
2085 | * disabled. This function would skip the &drm_plane_helper_funcs.atomic_disable |
2086 | * call for a plane if the CRTC of the old plane state needs a modesetting | |
2087 | * operation. Of course, the drivers need to disable the planes in their CRTC | |
2088 | * disable callbacks since no one else would do that. | |
2b58e98d LY |
2089 | * |
2090 | * The drm_atomic_helper_commit() default implementation doesn't set the | |
2091 | * ACTIVE_ONLY flag to most closely match the behaviour of the legacy helpers. | |
2092 | * This should not be copied blindly by drivers. | |
c2fcd274 DV |
2093 | */ |
2094 | void drm_atomic_helper_commit_planes(struct drm_device *dev, | |
aef9dbb8 | 2095 | struct drm_atomic_state *old_state, |
2b58e98d | 2096 | uint32_t flags) |
c2fcd274 | 2097 | { |
df63b999 | 2098 | struct drm_crtc *crtc; |
415c3ac3 | 2099 | struct drm_crtc_state *old_crtc_state, *new_crtc_state; |
df63b999 | 2100 | struct drm_plane *plane; |
415c3ac3 | 2101 | struct drm_plane_state *old_plane_state, *new_plane_state; |
c2fcd274 | 2102 | int i; |
2b58e98d LY |
2103 | bool active_only = flags & DRM_PLANE_COMMIT_ACTIVE_ONLY; |
2104 | bool no_disable = flags & DRM_PLANE_COMMIT_NO_DISABLE_AFTER_MODESET; | |
c2fcd274 | 2105 | |
415c3ac3 | 2106 | for_each_oldnew_crtc_in_state(old_state, crtc, old_crtc_state, new_crtc_state, i) { |
b5ceff20 | 2107 | const struct drm_crtc_helper_funcs *funcs; |
c2fcd274 DV |
2108 | |
2109 | funcs = crtc->helper_private; | |
2110 | ||
2111 | if (!funcs || !funcs->atomic_begin) | |
2112 | continue; | |
2113 | ||
415c3ac3 | 2114 | if (active_only && !new_crtc_state->active) |
aef9dbb8 DV |
2115 | continue; |
2116 | ||
613d2b27 | 2117 | funcs->atomic_begin(crtc, old_crtc_state); |
c2fcd274 DV |
2118 | } |
2119 | ||
415c3ac3 | 2120 | for_each_oldnew_plane_in_state(old_state, plane, old_plane_state, new_plane_state, i) { |
b5ceff20 | 2121 | const struct drm_plane_helper_funcs *funcs; |
216c59d6 | 2122 | bool disabling; |
c2fcd274 DV |
2123 | |
2124 | funcs = plane->helper_private; | |
2125 | ||
3cad4b68 | 2126 | if (!funcs) |
c2fcd274 DV |
2127 | continue; |
2128 | ||
51ffa12d ML |
2129 | disabling = drm_atomic_plane_disabling(old_plane_state, |
2130 | new_plane_state); | |
216c59d6 LP |
2131 | |
2132 | if (active_only) { | |
2133 | /* | |
2134 | * Skip planes related to inactive CRTCs. If the plane | |
2135 | * is enabled use the state of the current CRTC. If the | |
2136 | * plane is being disabled use the state of the old | |
2137 | * CRTC to avoid skipping planes being disabled on an | |
2138 | * active CRTC. | |
2139 | */ | |
415c3ac3 | 2140 | if (!disabling && !plane_crtc_active(new_plane_state)) |
216c59d6 LP |
2141 | continue; |
2142 | if (disabling && !plane_crtc_active(old_plane_state)) | |
2143 | continue; | |
2144 | } | |
aef9dbb8 | 2145 | |
407b8bd9 TR |
2146 | /* |
2147 | * Special-case disabling the plane if drivers support it. | |
2148 | */ | |
2b58e98d LY |
2149 | if (disabling && funcs->atomic_disable) { |
2150 | struct drm_crtc_state *crtc_state; | |
2151 | ||
2152 | crtc_state = old_plane_state->crtc->state; | |
2153 | ||
2154 | if (drm_atomic_crtc_needs_modeset(crtc_state) && | |
2155 | no_disable) | |
2156 | continue; | |
2157 | ||
407b8bd9 | 2158 | funcs->atomic_disable(plane, old_plane_state); |
415c3ac3 | 2159 | } else if (new_plane_state->crtc || disabling) { |
407b8bd9 | 2160 | funcs->atomic_update(plane, old_plane_state); |
2b58e98d | 2161 | } |
c2fcd274 DV |
2162 | } |
2163 | ||
415c3ac3 | 2164 | for_each_oldnew_crtc_in_state(old_state, crtc, old_crtc_state, new_crtc_state, i) { |
b5ceff20 | 2165 | const struct drm_crtc_helper_funcs *funcs; |
c2fcd274 DV |
2166 | |
2167 | funcs = crtc->helper_private; | |
2168 | ||
2169 | if (!funcs || !funcs->atomic_flush) | |
2170 | continue; | |
2171 | ||
415c3ac3 | 2172 | if (active_only && !new_crtc_state->active) |
aef9dbb8 DV |
2173 | continue; |
2174 | ||
613d2b27 | 2175 | funcs->atomic_flush(crtc, old_crtc_state); |
c2fcd274 DV |
2176 | } |
2177 | } | |
2178 | EXPORT_SYMBOL(drm_atomic_helper_commit_planes); | |
2179 | ||
de28d021 ML |
2180 | /** |
2181 | * drm_atomic_helper_commit_planes_on_crtc - commit plane state for a crtc | |
2182 | * @old_crtc_state: atomic state object with the old crtc state | |
2183 | * | |
2184 | * This function commits the new plane state using the plane and atomic helper | |
2185 | * functions for planes on the specific crtc. It assumes that the atomic state | |
2186 | * has already been pushed into the relevant object state pointers, since this | |
2187 | * step can no longer fail. | |
2188 | * | |
2189 | * This function is useful when plane updates should be done crtc-by-crtc | |
2190 | * instead of one global step like drm_atomic_helper_commit_planes() does. | |
2191 | * | |
2192 | * This function can only be savely used when planes are not allowed to move | |
2193 | * between different CRTCs because this function doesn't handle inter-CRTC | |
2194 | * depencies. Callers need to ensure that either no such depencies exist, | |
2195 | * resolve them through ordering of commit calls or through some other means. | |
2196 | */ | |
2197 | void | |
2198 | drm_atomic_helper_commit_planes_on_crtc(struct drm_crtc_state *old_crtc_state) | |
2199 | { | |
2200 | const struct drm_crtc_helper_funcs *crtc_funcs; | |
2201 | struct drm_crtc *crtc = old_crtc_state->crtc; | |
2202 | struct drm_atomic_state *old_state = old_crtc_state->state; | |
2203 | struct drm_plane *plane; | |
2204 | unsigned plane_mask; | |
2205 | ||
2206 | plane_mask = old_crtc_state->plane_mask; | |
2207 | plane_mask |= crtc->state->plane_mask; | |
2208 | ||
2209 | crtc_funcs = crtc->helper_private; | |
2210 | if (crtc_funcs && crtc_funcs->atomic_begin) | |
613d2b27 | 2211 | crtc_funcs->atomic_begin(crtc, old_crtc_state); |
de28d021 ML |
2212 | |
2213 | drm_for_each_plane_mask(plane, crtc->dev, plane_mask) { | |
2214 | struct drm_plane_state *old_plane_state = | |
b4d93679 | 2215 | drm_atomic_get_old_plane_state(old_state, plane); |
de28d021 ML |
2216 | const struct drm_plane_helper_funcs *plane_funcs; |
2217 | ||
2218 | plane_funcs = plane->helper_private; | |
2219 | ||
2220 | if (!old_plane_state || !plane_funcs) | |
2221 | continue; | |
2222 | ||
2223 | WARN_ON(plane->state->crtc && plane->state->crtc != crtc); | |
2224 | ||
51ffa12d | 2225 | if (drm_atomic_plane_disabling(old_plane_state, plane->state) && |
de28d021 ML |
2226 | plane_funcs->atomic_disable) |
2227 | plane_funcs->atomic_disable(plane, old_plane_state); | |
2228 | else if (plane->state->crtc || | |
51ffa12d | 2229 | drm_atomic_plane_disabling(old_plane_state, plane->state)) |
de28d021 ML |
2230 | plane_funcs->atomic_update(plane, old_plane_state); |
2231 | } | |
2232 | ||
2233 | if (crtc_funcs && crtc_funcs->atomic_flush) | |
613d2b27 | 2234 | crtc_funcs->atomic_flush(crtc, old_crtc_state); |
de28d021 ML |
2235 | } |
2236 | EXPORT_SYMBOL(drm_atomic_helper_commit_planes_on_crtc); | |
2237 | ||
6753ba97 JS |
2238 | /** |
2239 | * drm_atomic_helper_disable_planes_on_crtc - helper to disable CRTC's planes | |
28500291 | 2240 | * @old_crtc_state: atomic state object with the old CRTC state |
6753ba97 JS |
2241 | * @atomic: if set, synchronize with CRTC's atomic_begin/flush hooks |
2242 | * | |
2243 | * Disables all planes associated with the given CRTC. This can be | |
28500291 LY |
2244 | * used for instance in the CRTC helper atomic_disable callback to disable |
2245 | * all planes. | |
6753ba97 JS |
2246 | * |
2247 | * If the atomic-parameter is set the function calls the CRTC's | |
2248 | * atomic_begin hook before and atomic_flush hook after disabling the | |
2249 | * planes. | |
2250 | * | |
2251 | * It is a bug to call this function without having implemented the | |
6806cdf9 | 2252 | * &drm_plane_helper_funcs.atomic_disable plane hook. |
6753ba97 | 2253 | */ |
28500291 LY |
2254 | void |
2255 | drm_atomic_helper_disable_planes_on_crtc(struct drm_crtc_state *old_crtc_state, | |
2256 | bool atomic) | |
6753ba97 | 2257 | { |
28500291 | 2258 | struct drm_crtc *crtc = old_crtc_state->crtc; |
6753ba97 JS |
2259 | const struct drm_crtc_helper_funcs *crtc_funcs = |
2260 | crtc->helper_private; | |
2261 | struct drm_plane *plane; | |
2262 | ||
2263 | if (atomic && crtc_funcs && crtc_funcs->atomic_begin) | |
2264 | crtc_funcs->atomic_begin(crtc, NULL); | |
2265 | ||
28500291 | 2266 | drm_atomic_crtc_state_for_each_plane(plane, old_crtc_state) { |
6753ba97 JS |
2267 | const struct drm_plane_helper_funcs *plane_funcs = |
2268 | plane->helper_private; | |
2269 | ||
28500291 | 2270 | if (!plane_funcs) |
6753ba97 JS |
2271 | continue; |
2272 | ||
2273 | WARN_ON(!plane_funcs->atomic_disable); | |
2274 | if (plane_funcs->atomic_disable) | |
2275 | plane_funcs->atomic_disable(plane, NULL); | |
2276 | } | |
2277 | ||
2278 | if (atomic && crtc_funcs && crtc_funcs->atomic_flush) | |
2279 | crtc_funcs->atomic_flush(crtc, NULL); | |
2280 | } | |
2281 | EXPORT_SYMBOL(drm_atomic_helper_disable_planes_on_crtc); | |
2282 | ||
c2fcd274 DV |
2283 | /** |
2284 | * drm_atomic_helper_cleanup_planes - cleanup plane resources after commit | |
2285 | * @dev: DRM device | |
2286 | * @old_state: atomic state object with old state structures | |
2287 | * | |
2288 | * This function cleans up plane state, specifically framebuffers, from the old | |
2289 | * configuration. Hence the old configuration must be perserved in @old_state to | |
2290 | * be able to call this function. | |
2291 | * | |
2292 | * This function must also be called on the new state when the atomic update | |
2293 | * fails at any point after calling drm_atomic_helper_prepare_planes(). | |
2294 | */ | |
2295 | void drm_atomic_helper_cleanup_planes(struct drm_device *dev, | |
2296 | struct drm_atomic_state *old_state) | |
2297 | { | |
df63b999 | 2298 | struct drm_plane *plane; |
415c3ac3 | 2299 | struct drm_plane_state *old_plane_state, *new_plane_state; |
c2fcd274 DV |
2300 | int i; |
2301 | ||
415c3ac3 | 2302 | for_each_oldnew_plane_in_state(old_state, plane, old_plane_state, new_plane_state, i) { |
b5ceff20 | 2303 | const struct drm_plane_helper_funcs *funcs; |
415c3ac3 ML |
2304 | struct drm_plane_state *plane_state; |
2305 | ||
2306 | /* | |
2307 | * This might be called before swapping when commit is aborted, | |
2308 | * in which case we have to cleanup the new state. | |
2309 | */ | |
2310 | if (old_plane_state == plane->state) | |
2311 | plane_state = new_plane_state; | |
2312 | else | |
2313 | plane_state = old_plane_state; | |
c2fcd274 | 2314 | |
c2fcd274 DV |
2315 | funcs = plane->helper_private; |
2316 | ||
844f9111 ML |
2317 | if (funcs->cleanup_fb) |
2318 | funcs->cleanup_fb(plane, plane_state); | |
c2fcd274 DV |
2319 | } |
2320 | } | |
2321 | EXPORT_SYMBOL(drm_atomic_helper_cleanup_planes); | |
2322 | ||
2323 | /** | |
2324 | * drm_atomic_helper_swap_state - store atomic state into current sw state | |
c2fcd274 | 2325 | * @state: atomic state |
c066d231 | 2326 | * @stall: stall for preceeding commits |
c2fcd274 DV |
2327 | * |
2328 | * This function stores the atomic state into the current state pointers in all | |
2329 | * driver objects. It should be called after all failing steps have been done | |
2330 | * and succeeded, but before the actual hardware state is committed. | |
2331 | * | |
2332 | * For cleanup and error recovery the current state for all changed objects will | |
c066d231 | 2333 | * be swapped into @state. |
c2fcd274 DV |
2334 | * |
2335 | * With that sequence it fits perfectly into the plane prepare/cleanup sequence: | |
2336 | * | |
2337 | * 1. Call drm_atomic_helper_prepare_planes() with the staged atomic state. | |
2338 | * | |
2339 | * 2. Do any other steps that might fail. | |
2340 | * | |
2341 | * 3. Put the staged state into the current state pointers with this function. | |
2342 | * | |
2343 | * 4. Actually commit the hardware state. | |
2344 | * | |
26196f7e | 2345 | * 5. Call drm_atomic_helper_cleanup_planes() with @state, which since step 3 |
c2fcd274 | 2346 | * contains the old state. Also do any other cleanup required with that state. |
a095caa7 DV |
2347 | * |
2348 | * @stall must be set when nonblocking commits for this driver directly access | |
6806cdf9 DV |
2349 | * the &drm_plane.state, &drm_crtc.state or &drm_connector.state pointer. With |
2350 | * the current atomic helpers this is almost always the case, since the helpers | |
a095caa7 | 2351 | * don't pass the right state structures to the callbacks. |
c066d231 ML |
2352 | * |
2353 | * Returns: | |
2354 | * | |
c4bbb735 ML |
2355 | * Returns 0 on success. Can return -ERESTARTSYS when @stall is true and the |
2356 | * waiting for the previous commits has been interrupted. | |
c2fcd274 | 2357 | */ |
c066d231 | 2358 | int drm_atomic_helper_swap_state(struct drm_atomic_state *state, |
5e84c269 | 2359 | bool stall) |
c2fcd274 | 2360 | { |
c4bbb735 | 2361 | int i, ret; |
be9174a4 | 2362 | struct drm_connector *connector; |
415c3ac3 | 2363 | struct drm_connector_state *old_conn_state, *new_conn_state; |
be9174a4 | 2364 | struct drm_crtc *crtc; |
415c3ac3 | 2365 | struct drm_crtc_state *old_crtc_state, *new_crtc_state; |
be9174a4 | 2366 | struct drm_plane *plane; |
415c3ac3 | 2367 | struct drm_plane_state *old_plane_state, *new_plane_state; |
a095caa7 | 2368 | struct drm_crtc_commit *commit; |
a4370c77 VS |
2369 | struct drm_private_obj *obj; |
2370 | struct drm_private_state *old_obj_state, *new_obj_state; | |
a095caa7 DV |
2371 | |
2372 | if (stall) { | |
21a01abb ML |
2373 | /* |
2374 | * We have to stall for hw_done here before | |
2375 | * drm_atomic_helper_wait_for_dependencies() because flip | |
2376 | * depth > 1 is not yet supported by all drivers. As long as | |
2377 | * obj->state is directly dereferenced anywhere in the drivers | |
2378 | * atomic_commit_tail function, then it's unsafe to swap state | |
2379 | * before drm_atomic_helper_commit_hw_done() is called. | |
2380 | */ | |
2381 | ||
163bcc2c ML |
2382 | for_each_old_crtc_in_state(state, crtc, old_crtc_state, i) { |
2383 | commit = old_crtc_state->commit; | |
a095caa7 DV |
2384 | |
2385 | if (!commit) | |
2386 | continue; | |
2387 | ||
c4bbb735 | 2388 | ret = wait_for_completion_interruptible(&commit->hw_done); |
c4bbb735 ML |
2389 | if (ret) |
2390 | return ret; | |
a095caa7 | 2391 | } |
21a01abb ML |
2392 | |
2393 | for_each_old_connector_in_state(state, connector, old_conn_state, i) { | |
2394 | commit = old_conn_state->commit; | |
a095caa7 DV |
2395 | |
2396 | if (!commit) | |
2397 | continue; | |
2398 | ||
c4bbb735 | 2399 | ret = wait_for_completion_interruptible(&commit->hw_done); |
21a01abb ML |
2400 | if (ret) |
2401 | return ret; | |
2402 | } | |
c4bbb735 | 2403 | |
21a01abb ML |
2404 | for_each_old_plane_in_state(state, plane, old_plane_state, i) { |
2405 | commit = old_plane_state->commit; | |
2406 | ||
2407 | if (!commit) | |
2408 | continue; | |
2409 | ||
2410 | ret = wait_for_completion_interruptible(&commit->hw_done); | |
c4bbb735 ML |
2411 | if (ret) |
2412 | return ret; | |
a095caa7 DV |
2413 | } |
2414 | } | |
c2fcd274 | 2415 | |
415c3ac3 | 2416 | for_each_oldnew_connector_in_state(state, connector, old_conn_state, new_conn_state, i) { |
581e49fe ML |
2417 | WARN_ON(connector->state != old_conn_state); |
2418 | ||
415c3ac3 ML |
2419 | old_conn_state->state = state; |
2420 | new_conn_state->state = NULL; | |
2421 | ||
2422 | state->connectors[i].state = old_conn_state; | |
2423 | connector->state = new_conn_state; | |
c2fcd274 DV |
2424 | } |
2425 | ||
415c3ac3 | 2426 | for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) { |
581e49fe ML |
2427 | WARN_ON(crtc->state != old_crtc_state); |
2428 | ||
415c3ac3 ML |
2429 | old_crtc_state->state = state; |
2430 | new_crtc_state->state = NULL; | |
2431 | ||
2432 | state->crtcs[i].state = old_crtc_state; | |
2433 | crtc->state = new_crtc_state; | |
a095caa7 | 2434 | |
163bcc2c | 2435 | if (new_crtc_state->commit) { |
a095caa7 | 2436 | spin_lock(&crtc->commit_lock); |
163bcc2c | 2437 | list_add(&new_crtc_state->commit->commit_entry, |
a095caa7 DV |
2438 | &crtc->commit_list); |
2439 | spin_unlock(&crtc->commit_lock); | |
2440 | ||
163bcc2c | 2441 | new_crtc_state->commit->event = NULL; |
a095caa7 | 2442 | } |
c2fcd274 DV |
2443 | } |
2444 | ||
415c3ac3 | 2445 | for_each_oldnew_plane_in_state(state, plane, old_plane_state, new_plane_state, i) { |
581e49fe ML |
2446 | WARN_ON(plane->state != old_plane_state); |
2447 | ||
415c3ac3 ML |
2448 | old_plane_state->state = state; |
2449 | new_plane_state->state = NULL; | |
2450 | ||
2451 | state->planes[i].state = old_plane_state; | |
2452 | plane->state = new_plane_state; | |
c2fcd274 | 2453 | } |
b430c27a | 2454 | |
a4370c77 VS |
2455 | for_each_oldnew_private_obj_in_state(state, obj, old_obj_state, new_obj_state, i) { |
2456 | WARN_ON(obj->state != old_obj_state); | |
2457 | ||
2458 | old_obj_state->state = state; | |
2459 | new_obj_state->state = NULL; | |
2460 | ||
2461 | state->private_objs[i].state = old_obj_state; | |
2462 | obj->state = new_obj_state; | |
2463 | } | |
c066d231 ML |
2464 | |
2465 | return 0; | |
c2fcd274 DV |
2466 | } |
2467 | EXPORT_SYMBOL(drm_atomic_helper_swap_state); | |
042652ed DV |
2468 | |
2469 | /** | |
2470 | * drm_atomic_helper_update_plane - Helper for primary plane update using atomic | |
2471 | * @plane: plane object to update | |
2472 | * @crtc: owning CRTC of owning plane | |
2473 | * @fb: framebuffer to flip onto plane | |
2474 | * @crtc_x: x offset of primary plane on crtc | |
2475 | * @crtc_y: y offset of primary plane on crtc | |
2476 | * @crtc_w: width of primary plane rectangle on crtc | |
2477 | * @crtc_h: height of primary plane rectangle on crtc | |
2478 | * @src_x: x offset of @fb for panning | |
2479 | * @src_y: y offset of @fb for panning | |
2480 | * @src_w: width of source rectangle in @fb | |
2481 | * @src_h: height of source rectangle in @fb | |
34a2ab5e | 2482 | * @ctx: lock acquire context |
042652ed DV |
2483 | * |
2484 | * Provides a default plane update handler using the atomic driver interface. | |
2485 | * | |
2486 | * RETURNS: | |
2487 | * Zero on success, error code on failure | |
2488 | */ | |
2489 | int drm_atomic_helper_update_plane(struct drm_plane *plane, | |
2490 | struct drm_crtc *crtc, | |
2491 | struct drm_framebuffer *fb, | |
2492 | int crtc_x, int crtc_y, | |
2493 | unsigned int crtc_w, unsigned int crtc_h, | |
2494 | uint32_t src_x, uint32_t src_y, | |
34a2ab5e DV |
2495 | uint32_t src_w, uint32_t src_h, |
2496 | struct drm_modeset_acquire_ctx *ctx) | |
042652ed DV |
2497 | { |
2498 | struct drm_atomic_state *state; | |
2499 | struct drm_plane_state *plane_state; | |
2500 | int ret = 0; | |
2501 | ||
2502 | state = drm_atomic_state_alloc(plane->dev); | |
2503 | if (!state) | |
2504 | return -ENOMEM; | |
2505 | ||
d26f96c7 | 2506 | state->acquire_ctx = ctx; |
042652ed DV |
2507 | plane_state = drm_atomic_get_plane_state(state, plane); |
2508 | if (IS_ERR(plane_state)) { | |
2509 | ret = PTR_ERR(plane_state); | |
2510 | goto fail; | |
2511 | } | |
2512 | ||
07cc0ef6 | 2513 | ret = drm_atomic_set_crtc_for_plane(plane_state, crtc); |
042652ed DV |
2514 | if (ret != 0) |
2515 | goto fail; | |
321ebf04 | 2516 | drm_atomic_set_fb_for_plane(plane_state, fb); |
042652ed DV |
2517 | plane_state->crtc_x = crtc_x; |
2518 | plane_state->crtc_y = crtc_y; | |
042652ed | 2519 | plane_state->crtc_w = crtc_w; |
02e6f379 | 2520 | plane_state->crtc_h = crtc_h; |
042652ed DV |
2521 | plane_state->src_x = src_x; |
2522 | plane_state->src_y = src_y; | |
042652ed | 2523 | plane_state->src_w = src_w; |
02e6f379 | 2524 | plane_state->src_h = src_h; |
042652ed | 2525 | |
3671c580 DV |
2526 | if (plane == crtc->cursor) |
2527 | state->legacy_cursor_update = true; | |
2528 | ||
042652ed | 2529 | ret = drm_atomic_commit(state); |
042652ed | 2530 | fail: |
0853695c | 2531 | drm_atomic_state_put(state); |
042652ed | 2532 | return ret; |
042652ed DV |
2533 | } |
2534 | EXPORT_SYMBOL(drm_atomic_helper_update_plane); | |
2535 | ||
2536 | /** | |
2537 | * drm_atomic_helper_disable_plane - Helper for primary plane disable using * atomic | |
2538 | * @plane: plane to disable | |
19315294 | 2539 | * @ctx: lock acquire context |
042652ed DV |
2540 | * |
2541 | * Provides a default plane disable handler using the atomic driver interface. | |
2542 | * | |
2543 | * RETURNS: | |
2544 | * Zero on success, error code on failure | |
2545 | */ | |
19315294 DV |
2546 | int drm_atomic_helper_disable_plane(struct drm_plane *plane, |
2547 | struct drm_modeset_acquire_ctx *ctx) | |
042652ed DV |
2548 | { |
2549 | struct drm_atomic_state *state; | |
2550 | struct drm_plane_state *plane_state; | |
2551 | int ret = 0; | |
2552 | ||
2553 | state = drm_atomic_state_alloc(plane->dev); | |
2554 | if (!state) | |
2555 | return -ENOMEM; | |
2556 | ||
d26f96c7 | 2557 | state->acquire_ctx = ctx; |
042652ed DV |
2558 | plane_state = drm_atomic_get_plane_state(state, plane); |
2559 | if (IS_ERR(plane_state)) { | |
2560 | ret = PTR_ERR(plane_state); | |
2561 | goto fail; | |
2562 | } | |
2563 | ||
24e79d0d ML |
2564 | if (plane_state->crtc && (plane == plane->crtc->cursor)) |
2565 | plane_state->state->legacy_cursor_update = true; | |
2566 | ||
bbb1e524 | 2567 | ret = __drm_atomic_helper_disable_plane(plane, plane_state); |
042652ed DV |
2568 | if (ret != 0) |
2569 | goto fail; | |
f02ad907 | 2570 | |
042652ed | 2571 | ret = drm_atomic_commit(state); |
042652ed | 2572 | fail: |
0853695c | 2573 | drm_atomic_state_put(state); |
042652ed | 2574 | return ret; |
042652ed DV |
2575 | } |
2576 | EXPORT_SYMBOL(drm_atomic_helper_disable_plane); | |
2577 | ||
bbb1e524 RC |
2578 | /* just used from fb-helper and atomic-helper: */ |
2579 | int __drm_atomic_helper_disable_plane(struct drm_plane *plane, | |
2580 | struct drm_plane_state *plane_state) | |
2581 | { | |
2582 | int ret; | |
2583 | ||
2584 | ret = drm_atomic_set_crtc_for_plane(plane_state, NULL); | |
2585 | if (ret != 0) | |
2586 | return ret; | |
2587 | ||
2588 | drm_atomic_set_fb_for_plane(plane_state, NULL); | |
2589 | plane_state->crtc_x = 0; | |
2590 | plane_state->crtc_y = 0; | |
bbb1e524 | 2591 | plane_state->crtc_w = 0; |
02e6f379 | 2592 | plane_state->crtc_h = 0; |
bbb1e524 RC |
2593 | plane_state->src_x = 0; |
2594 | plane_state->src_y = 0; | |
bbb1e524 | 2595 | plane_state->src_w = 0; |
02e6f379 | 2596 | plane_state->src_h = 0; |
bbb1e524 | 2597 | |
bbb1e524 RC |
2598 | return 0; |
2599 | } | |
2600 | ||
042652ed DV |
2601 | static int update_output_state(struct drm_atomic_state *state, |
2602 | struct drm_mode_set *set) | |
2603 | { | |
2604 | struct drm_device *dev = set->crtc->dev; | |
df63b999 | 2605 | struct drm_crtc *crtc; |
415c3ac3 | 2606 | struct drm_crtc_state *new_crtc_state; |
df63b999 | 2607 | struct drm_connector *connector; |
415c3ac3 | 2608 | struct drm_connector_state *new_conn_state; |
6ab520a2 | 2609 | int ret, i; |
042652ed DV |
2610 | |
2611 | ret = drm_modeset_lock(&dev->mode_config.connection_mutex, | |
2612 | state->acquire_ctx); | |
2613 | if (ret) | |
2614 | return ret; | |
2615 | ||
6ab520a2 ML |
2616 | /* First disable all connectors on the target crtc. */ |
2617 | ret = drm_atomic_add_affected_connectors(state, set->crtc); | |
2618 | if (ret) | |
2619 | return ret; | |
042652ed | 2620 | |
415c3ac3 ML |
2621 | for_each_new_connector_in_state(state, connector, new_conn_state, i) { |
2622 | if (new_conn_state->crtc == set->crtc) { | |
2623 | ret = drm_atomic_set_crtc_for_connector(new_conn_state, | |
042652ed DV |
2624 | NULL); |
2625 | if (ret) | |
2626 | return ret; | |
415c3ac3 | 2627 | |
40ee6fbe | 2628 | /* Make sure legacy setCrtc always re-trains */ |
415c3ac3 | 2629 | new_conn_state->link_status = DRM_LINK_STATUS_GOOD; |
042652ed | 2630 | } |
6ab520a2 | 2631 | } |
042652ed | 2632 | |
6ab520a2 ML |
2633 | /* Then set all connectors from set->connectors on the target crtc */ |
2634 | for (i = 0; i < set->num_connectors; i++) { | |
415c3ac3 | 2635 | new_conn_state = drm_atomic_get_connector_state(state, |
6ab520a2 | 2636 | set->connectors[i]); |
415c3ac3 ML |
2637 | if (IS_ERR(new_conn_state)) |
2638 | return PTR_ERR(new_conn_state); | |
6ab520a2 | 2639 | |
415c3ac3 | 2640 | ret = drm_atomic_set_crtc_for_connector(new_conn_state, |
6ab520a2 ML |
2641 | set->crtc); |
2642 | if (ret) | |
2643 | return ret; | |
042652ed DV |
2644 | } |
2645 | ||
415c3ac3 | 2646 | for_each_new_crtc_in_state(state, crtc, new_crtc_state, i) { |
042652ed DV |
2647 | /* Don't update ->enable for the CRTC in the set_config request, |
2648 | * since a mismatch would indicate a bug in the upper layers. | |
2649 | * The actual modeset code later on will catch any | |
2650 | * inconsistencies here. */ | |
2651 | if (crtc == set->crtc) | |
2652 | continue; | |
2653 | ||
415c3ac3 ML |
2654 | if (!new_crtc_state->connector_mask) { |
2655 | ret = drm_atomic_set_mode_prop_for_crtc(new_crtc_state, | |
c30f55a7 LP |
2656 | NULL); |
2657 | if (ret < 0) | |
2658 | return ret; | |
2659 | ||
415c3ac3 | 2660 | new_crtc_state->active = false; |
c30f55a7 | 2661 | } |
042652ed DV |
2662 | } |
2663 | ||
2664 | return 0; | |
2665 | } | |
2666 | ||
2667 | /** | |
2668 | * drm_atomic_helper_set_config - set a new config from userspace | |
2669 | * @set: mode set configuration | |
a4eff9aa | 2670 | * @ctx: lock acquisition context |
042652ed DV |
2671 | * |
2672 | * Provides a default crtc set_config handler using the atomic driver interface. | |
2673 | * | |
40ee6fbe MN |
2674 | * NOTE: For backwards compatibility with old userspace this automatically |
2675 | * resets the "link-status" property to GOOD, to force any link | |
2676 | * re-training. The SETCRTC ioctl does not define whether an update does | |
2677 | * need a full modeset or just a plane update, hence we're allowed to do | |
2678 | * that. See also drm_mode_connector_set_link_status_property(). | |
2679 | * | |
042652ed DV |
2680 | * Returns: |
2681 | * Returns 0 on success, negative errno numbers on failure. | |
2682 | */ | |
a4eff9aa DV |
2683 | int drm_atomic_helper_set_config(struct drm_mode_set *set, |
2684 | struct drm_modeset_acquire_ctx *ctx) | |
042652ed DV |
2685 | { |
2686 | struct drm_atomic_state *state; | |
2687 | struct drm_crtc *crtc = set->crtc; | |
042652ed DV |
2688 | int ret = 0; |
2689 | ||
2690 | state = drm_atomic_state_alloc(crtc->dev); | |
2691 | if (!state) | |
2692 | return -ENOMEM; | |
2693 | ||
38b6441e | 2694 | state->acquire_ctx = ctx; |
bbb1e524 RC |
2695 | ret = __drm_atomic_helper_set_config(set, state); |
2696 | if (ret != 0) | |
1fa4da04 | 2697 | goto fail; |
042652ed | 2698 | |
44596b8c ML |
2699 | ret = handle_conflicting_encoders(state, true); |
2700 | if (ret) | |
2701 | return ret; | |
2702 | ||
bbb1e524 | 2703 | ret = drm_atomic_commit(state); |
bbb1e524 | 2704 | |
1fa4da04 | 2705 | fail: |
0853695c | 2706 | drm_atomic_state_put(state); |
bbb1e524 | 2707 | return ret; |
bbb1e524 RC |
2708 | } |
2709 | EXPORT_SYMBOL(drm_atomic_helper_set_config); | |
2710 | ||
2711 | /* just used from fb-helper and atomic-helper: */ | |
2712 | int __drm_atomic_helper_set_config(struct drm_mode_set *set, | |
2713 | struct drm_atomic_state *state) | |
2714 | { | |
2715 | struct drm_crtc_state *crtc_state; | |
2716 | struct drm_plane_state *primary_state; | |
2717 | struct drm_crtc *crtc = set->crtc; | |
83926117 | 2718 | int hdisplay, vdisplay; |
bbb1e524 RC |
2719 | int ret; |
2720 | ||
2721 | crtc_state = drm_atomic_get_crtc_state(state, crtc); | |
2722 | if (IS_ERR(crtc_state)) | |
2723 | return PTR_ERR(crtc_state); | |
2724 | ||
2725 | primary_state = drm_atomic_get_plane_state(state, crtc->primary); | |
2726 | if (IS_ERR(primary_state)) | |
2727 | return PTR_ERR(primary_state); | |
e5b5341c | 2728 | |
042652ed DV |
2729 | if (!set->mode) { |
2730 | WARN_ON(set->fb); | |
2731 | WARN_ON(set->num_connectors); | |
2732 | ||
819364da DS |
2733 | ret = drm_atomic_set_mode_for_crtc(crtc_state, NULL); |
2734 | if (ret != 0) | |
bbb1e524 | 2735 | return ret; |
819364da | 2736 | |
eab3bbef | 2737 | crtc_state->active = false; |
e5b5341c | 2738 | |
07cc0ef6 | 2739 | ret = drm_atomic_set_crtc_for_plane(primary_state, NULL); |
e5b5341c | 2740 | if (ret != 0) |
bbb1e524 | 2741 | return ret; |
e5b5341c RC |
2742 | |
2743 | drm_atomic_set_fb_for_plane(primary_state, NULL); | |
2744 | ||
042652ed DV |
2745 | goto commit; |
2746 | } | |
2747 | ||
2748 | WARN_ON(!set->fb); | |
2749 | WARN_ON(!set->num_connectors); | |
2750 | ||
819364da DS |
2751 | ret = drm_atomic_set_mode_for_crtc(crtc_state, set->mode); |
2752 | if (ret != 0) | |
bbb1e524 | 2753 | return ret; |
819364da | 2754 | |
eab3bbef | 2755 | crtc_state->active = true; |
042652ed | 2756 | |
07cc0ef6 | 2757 | ret = drm_atomic_set_crtc_for_plane(primary_state, crtc); |
042652ed | 2758 | if (ret != 0) |
bbb1e524 RC |
2759 | return ret; |
2760 | ||
196cd5d3 | 2761 | drm_mode_get_hv_timing(set->mode, &hdisplay, &vdisplay); |
83926117 | 2762 | |
321ebf04 | 2763 | drm_atomic_set_fb_for_plane(primary_state, set->fb); |
042652ed DV |
2764 | primary_state->crtc_x = 0; |
2765 | primary_state->crtc_y = 0; | |
83926117 | 2766 | primary_state->crtc_w = hdisplay; |
02e6f379 | 2767 | primary_state->crtc_h = vdisplay; |
042652ed DV |
2768 | primary_state->src_x = set->x << 16; |
2769 | primary_state->src_y = set->y << 16; | |
bd2ef25d | 2770 | if (drm_rotation_90_or_270(primary_state->rotation)) { |
83926117 | 2771 | primary_state->src_w = vdisplay << 16; |
02e6f379 | 2772 | primary_state->src_h = hdisplay << 16; |
41121248 | 2773 | } else { |
83926117 | 2774 | primary_state->src_w = hdisplay << 16; |
02e6f379 | 2775 | primary_state->src_h = vdisplay << 16; |
41121248 | 2776 | } |
042652ed DV |
2777 | |
2778 | commit: | |
2779 | ret = update_output_state(state, set); | |
2780 | if (ret) | |
bbb1e524 | 2781 | return ret; |
042652ed | 2782 | |
042652ed | 2783 | return 0; |
042652ed | 2784 | } |
042652ed | 2785 | |
14942760 TR |
2786 | /** |
2787 | * drm_atomic_helper_disable_all - disable all currently active outputs | |
2788 | * @dev: DRM device | |
2789 | * @ctx: lock acquisition context | |
2790 | * | |
2791 | * Loops through all connectors, finding those that aren't turned off and then | |
2792 | * turns them off by setting their DPMS mode to OFF and deactivating the CRTC | |
2793 | * that they are connected to. | |
2794 | * | |
2795 | * This is used for example in suspend/resume to disable all currently active | |
18dddadc DV |
2796 | * functions when suspending. If you just want to shut down everything at e.g. |
2797 | * driver unload, look at drm_atomic_helper_shutdown(). | |
14942760 TR |
2798 | * |
2799 | * Note that if callers haven't already acquired all modeset locks this might | |
2800 | * return -EDEADLK, which must be handled by calling drm_modeset_backoff(). | |
2801 | * | |
2802 | * Returns: | |
2803 | * 0 on success or a negative error code on failure. | |
2804 | * | |
2805 | * See also: | |
18dddadc DV |
2806 | * drm_atomic_helper_suspend(), drm_atomic_helper_resume() and |
2807 | * drm_atomic_helper_shutdown(). | |
14942760 TR |
2808 | */ |
2809 | int drm_atomic_helper_disable_all(struct drm_device *dev, | |
2810 | struct drm_modeset_acquire_ctx *ctx) | |
2811 | { | |
2812 | struct drm_atomic_state *state; | |
9b2104f4 | 2813 | struct drm_connector_state *conn_state; |
14942760 | 2814 | struct drm_connector *conn; |
9b2104f4 ML |
2815 | struct drm_plane_state *plane_state; |
2816 | struct drm_plane *plane; | |
2817 | struct drm_crtc_state *crtc_state; | |
2818 | struct drm_crtc *crtc; | |
49d70aea | 2819 | unsigned plane_mask = 0; |
9b2104f4 | 2820 | int ret, i; |
14942760 TR |
2821 | |
2822 | state = drm_atomic_state_alloc(dev); | |
2823 | if (!state) | |
2824 | return -ENOMEM; | |
2825 | ||
2826 | state->acquire_ctx = ctx; | |
2827 | ||
9b2104f4 | 2828 | drm_for_each_crtc(crtc, dev) { |
14942760 TR |
2829 | crtc_state = drm_atomic_get_crtc_state(state, crtc); |
2830 | if (IS_ERR(crtc_state)) { | |
9b2104f4 | 2831 | ret = PTR_ERR(crtc_state); |
14942760 TR |
2832 | goto free; |
2833 | } | |
2834 | ||
2835 | crtc_state->active = false; | |
9b2104f4 ML |
2836 | |
2837 | ret = drm_atomic_set_mode_prop_for_crtc(crtc_state, NULL); | |
2838 | if (ret < 0) | |
2839 | goto free; | |
2840 | ||
2841 | ret = drm_atomic_add_affected_planes(state, crtc); | |
2842 | if (ret < 0) | |
2843 | goto free; | |
2844 | ||
2845 | ret = drm_atomic_add_affected_connectors(state, crtc); | |
2846 | if (ret < 0) | |
2847 | goto free; | |
2848 | } | |
2849 | ||
dfb8bb3b | 2850 | for_each_new_connector_in_state(state, conn, conn_state, i) { |
9b2104f4 ML |
2851 | ret = drm_atomic_set_crtc_for_connector(conn_state, NULL); |
2852 | if (ret < 0) | |
2853 | goto free; | |
2854 | } | |
2855 | ||
dfb8bb3b | 2856 | for_each_new_plane_in_state(state, plane, plane_state, i) { |
9b2104f4 ML |
2857 | ret = drm_atomic_set_crtc_for_plane(plane_state, NULL); |
2858 | if (ret < 0) | |
2859 | goto free; | |
2860 | ||
2861 | drm_atomic_set_fb_for_plane(plane_state, NULL); | |
49d70aea DV |
2862 | plane_mask |= BIT(drm_plane_index(plane)); |
2863 | plane->old_fb = plane->fb; | |
14942760 TR |
2864 | } |
2865 | ||
9b2104f4 | 2866 | ret = drm_atomic_commit(state); |
14942760 | 2867 | free: |
49d70aea DV |
2868 | if (plane_mask) |
2869 | drm_atomic_clean_old_fb(dev, plane_mask, ret); | |
0853695c | 2870 | drm_atomic_state_put(state); |
9b2104f4 | 2871 | return ret; |
14942760 | 2872 | } |
9b2104f4 | 2873 | |
14942760 TR |
2874 | EXPORT_SYMBOL(drm_atomic_helper_disable_all); |
2875 | ||
18dddadc DV |
2876 | /** |
2877 | * drm_atomic_helper_shutdown - shutdown all CRTC | |
2878 | * @dev: DRM device | |
2879 | * | |
2880 | * This shuts down all CRTC, which is useful for driver unloading. Shutdown on | |
2881 | * suspend should instead be handled with drm_atomic_helper_suspend(), since | |
2882 | * that also takes a snapshot of the modeset state to be restored on resume. | |
2883 | * | |
2884 | * This is just a convenience wrapper around drm_atomic_helper_disable_all(), | |
2885 | * and it is the atomic version of drm_crtc_force_disable_all(). | |
2886 | */ | |
2887 | void drm_atomic_helper_shutdown(struct drm_device *dev) | |
2888 | { | |
2889 | struct drm_modeset_acquire_ctx ctx; | |
2890 | int ret; | |
2891 | ||
2892 | drm_modeset_acquire_init(&ctx, 0); | |
2893 | while (1) { | |
2894 | ret = drm_modeset_lock_all_ctx(dev, &ctx); | |
2895 | if (!ret) | |
2896 | ret = drm_atomic_helper_disable_all(dev, &ctx); | |
2897 | ||
2898 | if (ret != -EDEADLK) | |
2899 | break; | |
2900 | ||
2901 | drm_modeset_backoff(&ctx); | |
2902 | } | |
2903 | ||
2904 | if (ret) | |
2905 | DRM_ERROR("Disabling all crtc's during unload failed with %i\n", ret); | |
2906 | ||
2907 | drm_modeset_drop_locks(&ctx); | |
2908 | drm_modeset_acquire_fini(&ctx); | |
2909 | } | |
2910 | EXPORT_SYMBOL(drm_atomic_helper_shutdown); | |
2911 | ||
14942760 TR |
2912 | /** |
2913 | * drm_atomic_helper_suspend - subsystem-level suspend helper | |
2914 | * @dev: DRM device | |
2915 | * | |
2916 | * Duplicates the current atomic state, disables all active outputs and then | |
2917 | * returns a pointer to the original atomic state to the caller. Drivers can | |
2918 | * pass this pointer to the drm_atomic_helper_resume() helper upon resume to | |
2919 | * restore the output configuration that was active at the time the system | |
2920 | * entered suspend. | |
2921 | * | |
2922 | * Note that it is potentially unsafe to use this. The atomic state object | |
2923 | * returned by this function is assumed to be persistent. Drivers must ensure | |
2924 | * that this holds true. Before calling this function, drivers must make sure | |
2925 | * to suspend fbdev emulation so that nothing can be using the device. | |
2926 | * | |
2927 | * Returns: | |
2928 | * A pointer to a copy of the state before suspend on success or an ERR_PTR()- | |
2929 | * encoded error code on failure. Drivers should store the returned atomic | |
2930 | * state object and pass it to the drm_atomic_helper_resume() helper upon | |
2931 | * resume. | |
2932 | * | |
2933 | * See also: | |
2934 | * drm_atomic_helper_duplicate_state(), drm_atomic_helper_disable_all(), | |
581e49fe | 2935 | * drm_atomic_helper_resume(), drm_atomic_helper_commit_duplicated_state() |
14942760 TR |
2936 | */ |
2937 | struct drm_atomic_state *drm_atomic_helper_suspend(struct drm_device *dev) | |
2938 | { | |
2939 | struct drm_modeset_acquire_ctx ctx; | |
2940 | struct drm_atomic_state *state; | |
2941 | int err; | |
2942 | ||
2943 | drm_modeset_acquire_init(&ctx, 0); | |
2944 | ||
2945 | retry: | |
2946 | err = drm_modeset_lock_all_ctx(dev, &ctx); | |
2947 | if (err < 0) { | |
2948 | state = ERR_PTR(err); | |
2949 | goto unlock; | |
2950 | } | |
2951 | ||
2952 | state = drm_atomic_helper_duplicate_state(dev, &ctx); | |
2953 | if (IS_ERR(state)) | |
2954 | goto unlock; | |
2955 | ||
2956 | err = drm_atomic_helper_disable_all(dev, &ctx); | |
2957 | if (err < 0) { | |
0853695c | 2958 | drm_atomic_state_put(state); |
14942760 TR |
2959 | state = ERR_PTR(err); |
2960 | goto unlock; | |
2961 | } | |
2962 | ||
2963 | unlock: | |
2964 | if (PTR_ERR(state) == -EDEADLK) { | |
2965 | drm_modeset_backoff(&ctx); | |
2966 | goto retry; | |
2967 | } | |
2968 | ||
2969 | drm_modeset_drop_locks(&ctx); | |
2970 | drm_modeset_acquire_fini(&ctx); | |
2971 | return state; | |
2972 | } | |
2973 | EXPORT_SYMBOL(drm_atomic_helper_suspend); | |
2974 | ||
581e49fe ML |
2975 | /** |
2976 | * drm_atomic_helper_commit_duplicated_state - commit duplicated state | |
2977 | * @state: duplicated atomic state to commit | |
2978 | * @ctx: pointer to acquire_ctx to use for commit. | |
2979 | * | |
2980 | * The state returned by drm_atomic_helper_duplicate_state() and | |
2981 | * drm_atomic_helper_suspend() is partially invalid, and needs to | |
2982 | * be fixed up before commit. | |
2983 | * | |
2984 | * Returns: | |
2985 | * 0 on success or a negative error code on failure. | |
2986 | * | |
2987 | * See also: | |
2988 | * drm_atomic_helper_suspend() | |
2989 | */ | |
2990 | int drm_atomic_helper_commit_duplicated_state(struct drm_atomic_state *state, | |
2991 | struct drm_modeset_acquire_ctx *ctx) | |
2992 | { | |
2993 | int i; | |
2994 | struct drm_plane *plane; | |
415c3ac3 | 2995 | struct drm_plane_state *new_plane_state; |
581e49fe | 2996 | struct drm_connector *connector; |
415c3ac3 | 2997 | struct drm_connector_state *new_conn_state; |
581e49fe | 2998 | struct drm_crtc *crtc; |
415c3ac3 | 2999 | struct drm_crtc_state *new_crtc_state; |
49d70aea DV |
3000 | unsigned plane_mask = 0; |
3001 | struct drm_device *dev = state->dev; | |
3002 | int ret; | |
581e49fe ML |
3003 | |
3004 | state->acquire_ctx = ctx; | |
3005 | ||
49d70aea DV |
3006 | for_each_new_plane_in_state(state, plane, new_plane_state, i) { |
3007 | plane_mask |= BIT(drm_plane_index(plane)); | |
581e49fe | 3008 | state->planes[i].old_state = plane->state; |
49d70aea | 3009 | } |
581e49fe | 3010 | |
415c3ac3 | 3011 | for_each_new_crtc_in_state(state, crtc, new_crtc_state, i) |
581e49fe ML |
3012 | state->crtcs[i].old_state = crtc->state; |
3013 | ||
415c3ac3 | 3014 | for_each_new_connector_in_state(state, connector, new_conn_state, i) |
581e49fe ML |
3015 | state->connectors[i].old_state = connector->state; |
3016 | ||
49d70aea DV |
3017 | ret = drm_atomic_commit(state); |
3018 | if (plane_mask) | |
3019 | drm_atomic_clean_old_fb(dev, plane_mask, ret); | |
3020 | ||
3021 | return ret; | |
581e49fe ML |
3022 | } |
3023 | EXPORT_SYMBOL(drm_atomic_helper_commit_duplicated_state); | |
3024 | ||
14942760 TR |
3025 | /** |
3026 | * drm_atomic_helper_resume - subsystem-level resume helper | |
3027 | * @dev: DRM device | |
3028 | * @state: atomic state to resume to | |
3029 | * | |
3030 | * Calls drm_mode_config_reset() to synchronize hardware and software states, | |
3031 | * grabs all modeset locks and commits the atomic state object. This can be | |
3032 | * used in conjunction with the drm_atomic_helper_suspend() helper to | |
3033 | * implement suspend/resume for drivers that support atomic mode-setting. | |
3034 | * | |
3035 | * Returns: | |
3036 | * 0 on success or a negative error code on failure. | |
3037 | * | |
3038 | * See also: | |
3039 | * drm_atomic_helper_suspend() | |
3040 | */ | |
3041 | int drm_atomic_helper_resume(struct drm_device *dev, | |
3042 | struct drm_atomic_state *state) | |
3043 | { | |
a5b8444e | 3044 | struct drm_modeset_acquire_ctx ctx; |
14942760 TR |
3045 | int err; |
3046 | ||
3047 | drm_mode_config_reset(dev); | |
581e49fe | 3048 | |
a5b8444e DV |
3049 | drm_modeset_acquire_init(&ctx, 0); |
3050 | while (1) { | |
869e188a DV |
3051 | err = drm_modeset_lock_all_ctx(dev, &ctx); |
3052 | if (err) | |
3053 | goto out; | |
3054 | ||
a5b8444e | 3055 | err = drm_atomic_helper_commit_duplicated_state(state, &ctx); |
869e188a | 3056 | out: |
a5b8444e DV |
3057 | if (err != -EDEADLK) |
3058 | break; | |
3059 | ||
3060 | drm_modeset_backoff(&ctx); | |
3061 | } | |
3062 | ||
6d281b1f | 3063 | drm_atomic_state_put(state); |
a5b8444e DV |
3064 | drm_modeset_drop_locks(&ctx); |
3065 | drm_modeset_acquire_fini(&ctx); | |
14942760 TR |
3066 | |
3067 | return err; | |
3068 | } | |
3069 | EXPORT_SYMBOL(drm_atomic_helper_resume); | |
3070 | ||
8c3a8181 DV |
3071 | static int page_flip_common(struct drm_atomic_state *state, |
3072 | struct drm_crtc *crtc, | |
3073 | struct drm_framebuffer *fb, | |
3074 | struct drm_pending_vblank_event *event, | |
3075 | uint32_t flags) | |
f869a6ec AG |
3076 | { |
3077 | struct drm_plane *plane = crtc->primary; | |
3078 | struct drm_plane_state *plane_state; | |
3079 | struct drm_crtc_state *crtc_state; | |
3080 | int ret = 0; | |
3081 | ||
3082 | crtc_state = drm_atomic_get_crtc_state(state, crtc); | |
3083 | if (IS_ERR(crtc_state)) | |
3084 | return PTR_ERR(crtc_state); | |
3085 | ||
3086 | crtc_state->event = event; | |
6cbe5c46 | 3087 | crtc_state->pageflip_flags = flags; |
f869a6ec AG |
3088 | |
3089 | plane_state = drm_atomic_get_plane_state(state, plane); | |
3090 | if (IS_ERR(plane_state)) | |
3091 | return PTR_ERR(plane_state); | |
3092 | ||
f869a6ec AG |
3093 | ret = drm_atomic_set_crtc_for_plane(plane_state, crtc); |
3094 | if (ret != 0) | |
3095 | return ret; | |
3096 | drm_atomic_set_fb_for_plane(plane_state, fb); | |
3097 | ||
3098 | /* Make sure we don't accidentally do a full modeset. */ | |
3099 | state->allow_modeset = false; | |
3100 | if (!crtc_state->active) { | |
6ac7c548 RK |
3101 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] disabled, rejecting legacy flip\n", |
3102 | crtc->base.id, crtc->name); | |
f869a6ec AG |
3103 | return -EINVAL; |
3104 | } | |
3105 | ||
3106 | return ret; | |
3107 | } | |
3108 | ||
8bc0f312 DV |
3109 | /** |
3110 | * drm_atomic_helper_page_flip - execute a legacy page flip | |
3111 | * @crtc: DRM crtc | |
3112 | * @fb: DRM framebuffer | |
3113 | * @event: optional DRM event to signal upon completion | |
3114 | * @flags: flip flags for non-vblank sync'ed updates | |
41292b1f | 3115 | * @ctx: lock acquisition context |
8bc0f312 | 3116 | * |
f869a6ec AG |
3117 | * Provides a default &drm_crtc_funcs.page_flip implementation |
3118 | * using the atomic driver interface. | |
8bc0f312 | 3119 | * |
8bc0f312 DV |
3120 | * Returns: |
3121 | * Returns 0 on success, negative errno numbers on failure. | |
f869a6ec AG |
3122 | * |
3123 | * See also: | |
3124 | * drm_atomic_helper_page_flip_target() | |
8bc0f312 DV |
3125 | */ |
3126 | int drm_atomic_helper_page_flip(struct drm_crtc *crtc, | |
3127 | struct drm_framebuffer *fb, | |
3128 | struct drm_pending_vblank_event *event, | |
41292b1f DV |
3129 | uint32_t flags, |
3130 | struct drm_modeset_acquire_ctx *ctx) | |
8bc0f312 DV |
3131 | { |
3132 | struct drm_plane *plane = crtc->primary; | |
3133 | struct drm_atomic_state *state; | |
8bc0f312 DV |
3134 | int ret = 0; |
3135 | ||
8bc0f312 DV |
3136 | state = drm_atomic_state_alloc(plane->dev); |
3137 | if (!state) | |
3138 | return -ENOMEM; | |
3139 | ||
043e7fb6 | 3140 | state->acquire_ctx = ctx; |
f869a6ec | 3141 | |
6cbe5c46 | 3142 | ret = page_flip_common(state, crtc, fb, event, flags); |
f869a6ec | 3143 | if (ret != 0) |
8bc0f312 | 3144 | goto fail; |
8bc0f312 | 3145 | |
f869a6ec | 3146 | ret = drm_atomic_nonblocking_commit(state); |
f869a6ec | 3147 | fail: |
f869a6ec AG |
3148 | drm_atomic_state_put(state); |
3149 | return ret; | |
f869a6ec AG |
3150 | } |
3151 | EXPORT_SYMBOL(drm_atomic_helper_page_flip); | |
3152 | ||
3153 | /** | |
3154 | * drm_atomic_helper_page_flip_target - do page flip on target vblank period. | |
3155 | * @crtc: DRM crtc | |
3156 | * @fb: DRM framebuffer | |
3157 | * @event: optional DRM event to signal upon completion | |
3158 | * @flags: flip flags for non-vblank sync'ed updates | |
3159 | * @target: specifying the target vblank period when the flip to take effect | |
41292b1f | 3160 | * @ctx: lock acquisition context |
f869a6ec AG |
3161 | * |
3162 | * Provides a default &drm_crtc_funcs.page_flip_target implementation. | |
3163 | * Similar to drm_atomic_helper_page_flip() with extra parameter to specify | |
3164 | * target vblank period to flip. | |
3165 | * | |
3166 | * Returns: | |
3167 | * Returns 0 on success, negative errno numbers on failure. | |
3168 | */ | |
8c3a8181 DV |
3169 | int drm_atomic_helper_page_flip_target(struct drm_crtc *crtc, |
3170 | struct drm_framebuffer *fb, | |
3171 | struct drm_pending_vblank_event *event, | |
3172 | uint32_t flags, | |
3173 | uint32_t target, | |
3174 | struct drm_modeset_acquire_ctx *ctx) | |
f869a6ec AG |
3175 | { |
3176 | struct drm_plane *plane = crtc->primary; | |
3177 | struct drm_atomic_state *state; | |
3178 | struct drm_crtc_state *crtc_state; | |
3179 | int ret = 0; | |
3180 | ||
f869a6ec AG |
3181 | state = drm_atomic_state_alloc(plane->dev); |
3182 | if (!state) | |
3183 | return -ENOMEM; | |
3184 | ||
043e7fb6 | 3185 | state->acquire_ctx = ctx; |
f869a6ec | 3186 | |
6cbe5c46 | 3187 | ret = page_flip_common(state, crtc, fb, event, flags); |
8bc0f312 DV |
3188 | if (ret != 0) |
3189 | goto fail; | |
8bc0f312 | 3190 | |
b4d93679 | 3191 | crtc_state = drm_atomic_get_new_crtc_state(state, crtc); |
f869a6ec | 3192 | if (WARN_ON(!crtc_state)) { |
4cba6850 DV |
3193 | ret = -EINVAL; |
3194 | goto fail; | |
3195 | } | |
f869a6ec | 3196 | crtc_state->target_vblank = target; |
4cba6850 | 3197 | |
b837ba0a | 3198 | ret = drm_atomic_nonblocking_commit(state); |
8bc0f312 | 3199 | fail: |
0853695c | 3200 | drm_atomic_state_put(state); |
8bc0f312 | 3201 | return ret; |
8bc0f312 | 3202 | } |
f869a6ec | 3203 | EXPORT_SYMBOL(drm_atomic_helper_page_flip_target); |
d461701c | 3204 | |
9ecb5498 | 3205 | /** |
6806cdf9 DV |
3206 | * drm_atomic_helper_best_encoder - Helper for |
3207 | * &drm_connector_helper_funcs.best_encoder callback | |
9ecb5498 NT |
3208 | * @connector: Connector control structure |
3209 | * | |
6806cdf9 | 3210 | * This is a &drm_connector_helper_funcs.best_encoder callback helper for |
9ecb5498 NT |
3211 | * connectors that support exactly 1 encoder, statically determined at driver |
3212 | * init time. | |
3213 | */ | |
3214 | struct drm_encoder * | |
3215 | drm_atomic_helper_best_encoder(struct drm_connector *connector) | |
3216 | { | |
3217 | WARN_ON(connector->encoder_ids[1]); | |
418da172 | 3218 | return drm_encoder_find(connector->dev, NULL, connector->encoder_ids[0]); |
9ecb5498 NT |
3219 | } |
3220 | EXPORT_SYMBOL(drm_atomic_helper_best_encoder); | |
3221 | ||
3150c7d0 DV |
3222 | /** |
3223 | * DOC: atomic state reset and initialization | |
3224 | * | |
3225 | * Both the drm core and the atomic helpers assume that there is always the full | |
3226 | * and correct atomic software state for all connectors, CRTCs and planes | |
3227 | * available. Which is a bit a problem on driver load and also after system | |
3228 | * suspend. One way to solve this is to have a hardware state read-out | |
3229 | * infrastructure which reconstructs the full software state (e.g. the i915 | |
3230 | * driver). | |
3231 | * | |
3232 | * The simpler solution is to just reset the software state to everything off, | |
3233 | * which is easiest to do by calling drm_mode_config_reset(). To facilitate this | |
3234 | * the atomic helpers provide default reset implementations for all hooks. | |
7f8ee3e5 DV |
3235 | * |
3236 | * On the upside the precise state tracking of atomic simplifies system suspend | |
3237 | * and resume a lot. For drivers using drm_mode_config_reset() a complete recipe | |
3238 | * is implemented in drm_atomic_helper_suspend() and drm_atomic_helper_resume(). | |
3239 | * For other drivers the building blocks are split out, see the documentation | |
3240 | * for these functions. | |
3150c7d0 DV |
3241 | */ |
3242 | ||
d461701c | 3243 | /** |
6806cdf9 | 3244 | * drm_atomic_helper_crtc_reset - default &drm_crtc_funcs.reset hook for CRTCs |
d461701c DV |
3245 | * @crtc: drm CRTC |
3246 | * | |
3247 | * Resets the atomic state for @crtc by freeing the state pointer (which might | |
3248 | * be NULL, e.g. at driver load time) and allocating a new empty state object. | |
3249 | */ | |
3250 | void drm_atomic_helper_crtc_reset(struct drm_crtc *crtc) | |
3251 | { | |
b0b5511b | 3252 | if (crtc->state) |
ec2dc6a0 | 3253 | __drm_atomic_helper_crtc_destroy_state(crtc->state); |
b0b5511b | 3254 | |
d461701c DV |
3255 | kfree(crtc->state); |
3256 | crtc->state = kzalloc(sizeof(*crtc->state), GFP_KERNEL); | |
07cc0ef6 DV |
3257 | |
3258 | if (crtc->state) | |
3259 | crtc->state->crtc = crtc; | |
d461701c DV |
3260 | } |
3261 | EXPORT_SYMBOL(drm_atomic_helper_crtc_reset); | |
3262 | ||
f5e7840b TR |
3263 | /** |
3264 | * __drm_atomic_helper_crtc_duplicate_state - copy atomic CRTC state | |
3265 | * @crtc: CRTC object | |
3266 | * @state: atomic CRTC state | |
3267 | * | |
3268 | * Copies atomic state from a CRTC's current state and resets inferred values. | |
3269 | * This is useful for drivers that subclass the CRTC state. | |
3270 | */ | |
3271 | void __drm_atomic_helper_crtc_duplicate_state(struct drm_crtc *crtc, | |
3272 | struct drm_crtc_state *state) | |
3273 | { | |
3274 | memcpy(state, crtc->state, sizeof(*state)); | |
3275 | ||
99cf4a29 | 3276 | if (state->mode_blob) |
6472e509 | 3277 | drm_property_blob_get(state->mode_blob); |
5488dc16 | 3278 | if (state->degamma_lut) |
6472e509 | 3279 | drm_property_blob_get(state->degamma_lut); |
5488dc16 | 3280 | if (state->ctm) |
6472e509 | 3281 | drm_property_blob_get(state->ctm); |
5488dc16 | 3282 | if (state->gamma_lut) |
6472e509 | 3283 | drm_property_blob_get(state->gamma_lut); |
f5e7840b TR |
3284 | state->mode_changed = false; |
3285 | state->active_changed = false; | |
3286 | state->planes_changed = false; | |
fc596660 | 3287 | state->connectors_changed = false; |
5488dc16 | 3288 | state->color_mgmt_changed = false; |
44d1240d | 3289 | state->zpos_changed = false; |
163bcc2c | 3290 | state->commit = NULL; |
f5e7840b | 3291 | state->event = NULL; |
6cbe5c46 | 3292 | state->pageflip_flags = 0; |
f5e7840b TR |
3293 | } |
3294 | EXPORT_SYMBOL(__drm_atomic_helper_crtc_duplicate_state); | |
3295 | ||
d461701c DV |
3296 | /** |
3297 | * drm_atomic_helper_crtc_duplicate_state - default state duplicate hook | |
3298 | * @crtc: drm CRTC | |
3299 | * | |
3300 | * Default CRTC state duplicate hook for drivers which don't have their own | |
3301 | * subclassed CRTC state structure. | |
3302 | */ | |
3303 | struct drm_crtc_state * | |
3304 | drm_atomic_helper_crtc_duplicate_state(struct drm_crtc *crtc) | |
3305 | { | |
3306 | struct drm_crtc_state *state; | |
3307 | ||
3308 | if (WARN_ON(!crtc->state)) | |
3309 | return NULL; | |
3310 | ||
f5e7840b TR |
3311 | state = kmalloc(sizeof(*state), GFP_KERNEL); |
3312 | if (state) | |
3313 | __drm_atomic_helper_crtc_duplicate_state(crtc, state); | |
d461701c DV |
3314 | |
3315 | return state; | |
3316 | } | |
3317 | EXPORT_SYMBOL(drm_atomic_helper_crtc_duplicate_state); | |
3318 | ||
f5e7840b TR |
3319 | /** |
3320 | * __drm_atomic_helper_crtc_destroy_state - release CRTC state | |
f5e7840b TR |
3321 | * @state: CRTC state object to release |
3322 | * | |
3323 | * Releases all resources stored in the CRTC state without actually freeing | |
3324 | * the memory of the CRTC state. This is useful for drivers that subclass the | |
3325 | * CRTC state. | |
3326 | */ | |
ec2dc6a0 | 3327 | void __drm_atomic_helper_crtc_destroy_state(struct drm_crtc_state *state) |
f5e7840b | 3328 | { |
163bcc2c ML |
3329 | if (state->commit) { |
3330 | kfree(state->commit->event); | |
3331 | state->commit->event = NULL; | |
3332 | drm_crtc_commit_put(state->commit); | |
3333 | } | |
3334 | ||
6472e509 TR |
3335 | drm_property_blob_put(state->mode_blob); |
3336 | drm_property_blob_put(state->degamma_lut); | |
3337 | drm_property_blob_put(state->ctm); | |
3338 | drm_property_blob_put(state->gamma_lut); | |
f5e7840b TR |
3339 | } |
3340 | EXPORT_SYMBOL(__drm_atomic_helper_crtc_destroy_state); | |
3341 | ||
d461701c DV |
3342 | /** |
3343 | * drm_atomic_helper_crtc_destroy_state - default state destroy hook | |
3344 | * @crtc: drm CRTC | |
3345 | * @state: CRTC state object to release | |
3346 | * | |
3347 | * Default CRTC state destroy hook for drivers which don't have their own | |
3348 | * subclassed CRTC state structure. | |
3349 | */ | |
3350 | void drm_atomic_helper_crtc_destroy_state(struct drm_crtc *crtc, | |
3351 | struct drm_crtc_state *state) | |
3352 | { | |
ec2dc6a0 | 3353 | __drm_atomic_helper_crtc_destroy_state(state); |
d461701c DV |
3354 | kfree(state); |
3355 | } | |
3356 | EXPORT_SYMBOL(drm_atomic_helper_crtc_destroy_state); | |
3357 | ||
3358 | /** | |
6806cdf9 | 3359 | * drm_atomic_helper_plane_reset - default &drm_plane_funcs.reset hook for planes |
d461701c DV |
3360 | * @plane: drm plane |
3361 | * | |
3362 | * Resets the atomic state for @plane by freeing the state pointer (which might | |
3363 | * be NULL, e.g. at driver load time) and allocating a new empty state object. | |
3364 | */ | |
3365 | void drm_atomic_helper_plane_reset(struct drm_plane *plane) | |
3366 | { | |
b0b5511b | 3367 | if (plane->state) |
2f701695 | 3368 | __drm_atomic_helper_plane_destroy_state(plane->state); |
321ebf04 | 3369 | |
d461701c DV |
3370 | kfree(plane->state); |
3371 | plane->state = kzalloc(sizeof(*plane->state), GFP_KERNEL); | |
07cc0ef6 | 3372 | |
25aaa3a1 | 3373 | if (plane->state) { |
07cc0ef6 | 3374 | plane->state->plane = plane; |
c2c446ad | 3375 | plane->state->rotation = DRM_MODE_ROTATE_0; |
25aaa3a1 | 3376 | } |
d461701c DV |
3377 | } |
3378 | EXPORT_SYMBOL(drm_atomic_helper_plane_reset); | |
3379 | ||
f5e7840b TR |
3380 | /** |
3381 | * __drm_atomic_helper_plane_duplicate_state - copy atomic plane state | |
3382 | * @plane: plane object | |
3383 | * @state: atomic plane state | |
3384 | * | |
3385 | * Copies atomic state from a plane's current state. This is useful for | |
3386 | * drivers that subclass the plane state. | |
3387 | */ | |
3388 | void __drm_atomic_helper_plane_duplicate_state(struct drm_plane *plane, | |
3389 | struct drm_plane_state *state) | |
3390 | { | |
3391 | memcpy(state, plane->state, sizeof(*state)); | |
3392 | ||
3393 | if (state->fb) | |
a4a69da0 | 3394 | drm_framebuffer_get(state->fb); |
96260142 GP |
3395 | |
3396 | state->fence = NULL; | |
21a01abb | 3397 | state->commit = NULL; |
f5e7840b TR |
3398 | } |
3399 | EXPORT_SYMBOL(__drm_atomic_helper_plane_duplicate_state); | |
3400 | ||
d461701c DV |
3401 | /** |
3402 | * drm_atomic_helper_plane_duplicate_state - default state duplicate hook | |
3403 | * @plane: drm plane | |
3404 | * | |
3405 | * Default plane state duplicate hook for drivers which don't have their own | |
3406 | * subclassed plane state structure. | |
3407 | */ | |
3408 | struct drm_plane_state * | |
3409 | drm_atomic_helper_plane_duplicate_state(struct drm_plane *plane) | |
3410 | { | |
321ebf04 DV |
3411 | struct drm_plane_state *state; |
3412 | ||
d461701c DV |
3413 | if (WARN_ON(!plane->state)) |
3414 | return NULL; | |
3415 | ||
f5e7840b TR |
3416 | state = kmalloc(sizeof(*state), GFP_KERNEL); |
3417 | if (state) | |
3418 | __drm_atomic_helper_plane_duplicate_state(plane, state); | |
321ebf04 DV |
3419 | |
3420 | return state; | |
d461701c DV |
3421 | } |
3422 | EXPORT_SYMBOL(drm_atomic_helper_plane_duplicate_state); | |
3423 | ||
f5e7840b TR |
3424 | /** |
3425 | * __drm_atomic_helper_plane_destroy_state - release plane state | |
f5e7840b TR |
3426 | * @state: plane state object to release |
3427 | * | |
3428 | * Releases all resources stored in the plane state without actually freeing | |
3429 | * the memory of the plane state. This is useful for drivers that subclass the | |
3430 | * plane state. | |
3431 | */ | |
2f701695 | 3432 | void __drm_atomic_helper_plane_destroy_state(struct drm_plane_state *state) |
f5e7840b TR |
3433 | { |
3434 | if (state->fb) | |
a4a69da0 | 3435 | drm_framebuffer_put(state->fb); |
96260142 GP |
3436 | |
3437 | if (state->fence) | |
3438 | dma_fence_put(state->fence); | |
21a01abb ML |
3439 | |
3440 | if (state->commit) | |
3441 | drm_crtc_commit_put(state->commit); | |
f5e7840b TR |
3442 | } |
3443 | EXPORT_SYMBOL(__drm_atomic_helper_plane_destroy_state); | |
3444 | ||
d461701c DV |
3445 | /** |
3446 | * drm_atomic_helper_plane_destroy_state - default state destroy hook | |
3447 | * @plane: drm plane | |
3448 | * @state: plane state object to release | |
3449 | * | |
3450 | * Default plane state destroy hook for drivers which don't have their own | |
3451 | * subclassed plane state structure. | |
3452 | */ | |
3453 | void drm_atomic_helper_plane_destroy_state(struct drm_plane *plane, | |
321ebf04 | 3454 | struct drm_plane_state *state) |
d461701c | 3455 | { |
2f701695 | 3456 | __drm_atomic_helper_plane_destroy_state(state); |
d461701c DV |
3457 | kfree(state); |
3458 | } | |
3459 | EXPORT_SYMBOL(drm_atomic_helper_plane_destroy_state); | |
3460 | ||
4cd39917 ML |
3461 | /** |
3462 | * __drm_atomic_helper_connector_reset - reset state on connector | |
3463 | * @connector: drm connector | |
3464 | * @conn_state: connector state to assign | |
3465 | * | |
3466 | * Initializes the newly allocated @conn_state and assigns it to | |
6806cdf9 DV |
3467 | * the &drm_conector->state pointer of @connector, usually required when |
3468 | * initializing the drivers or when called from the &drm_connector_funcs.reset | |
3469 | * hook. | |
4cd39917 ML |
3470 | * |
3471 | * This is useful for drivers that subclass the connector state. | |
3472 | */ | |
3473 | void | |
3474 | __drm_atomic_helper_connector_reset(struct drm_connector *connector, | |
3475 | struct drm_connector_state *conn_state) | |
3476 | { | |
3477 | if (conn_state) | |
3478 | conn_state->connector = connector; | |
3479 | ||
3480 | connector->state = conn_state; | |
3481 | } | |
3482 | EXPORT_SYMBOL(__drm_atomic_helper_connector_reset); | |
3483 | ||
d461701c | 3484 | /** |
6806cdf9 | 3485 | * drm_atomic_helper_connector_reset - default &drm_connector_funcs.reset hook for connectors |
d461701c DV |
3486 | * @connector: drm connector |
3487 | * | |
3488 | * Resets the atomic state for @connector by freeing the state pointer (which | |
3489 | * might be NULL, e.g. at driver load time) and allocating a new empty state | |
3490 | * object. | |
3491 | */ | |
3492 | void drm_atomic_helper_connector_reset(struct drm_connector *connector) | |
3493 | { | |
4cd39917 ML |
3494 | struct drm_connector_state *conn_state = |
3495 | kzalloc(sizeof(*conn_state), GFP_KERNEL); | |
07cc0ef6 | 3496 | |
b0b5511b | 3497 | if (connector->state) |
fabd9106 | 3498 | __drm_atomic_helper_connector_destroy_state(connector->state); |
b0b5511b | 3499 | |
4cd39917 ML |
3500 | kfree(connector->state); |
3501 | __drm_atomic_helper_connector_reset(connector, conn_state); | |
d461701c DV |
3502 | } |
3503 | EXPORT_SYMBOL(drm_atomic_helper_connector_reset); | |
3504 | ||
f5e7840b TR |
3505 | /** |
3506 | * __drm_atomic_helper_connector_duplicate_state - copy atomic connector state | |
3507 | * @connector: connector object | |
3508 | * @state: atomic connector state | |
3509 | * | |
3510 | * Copies atomic state from a connector's current state. This is useful for | |
3511 | * drivers that subclass the connector state. | |
3512 | */ | |
3513 | void | |
3514 | __drm_atomic_helper_connector_duplicate_state(struct drm_connector *connector, | |
3515 | struct drm_connector_state *state) | |
3516 | { | |
3517 | memcpy(state, connector->state, sizeof(*state)); | |
d2307dea | 3518 | if (state->crtc) |
ad093607 | 3519 | drm_connector_get(connector); |
21a01abb | 3520 | state->commit = NULL; |
f5e7840b TR |
3521 | } |
3522 | EXPORT_SYMBOL(__drm_atomic_helper_connector_duplicate_state); | |
3523 | ||
d461701c DV |
3524 | /** |
3525 | * drm_atomic_helper_connector_duplicate_state - default state duplicate hook | |
3526 | * @connector: drm connector | |
3527 | * | |
3528 | * Default connector state duplicate hook for drivers which don't have their own | |
3529 | * subclassed connector state structure. | |
3530 | */ | |
3531 | struct drm_connector_state * | |
3532 | drm_atomic_helper_connector_duplicate_state(struct drm_connector *connector) | |
3533 | { | |
f5e7840b TR |
3534 | struct drm_connector_state *state; |
3535 | ||
d461701c DV |
3536 | if (WARN_ON(!connector->state)) |
3537 | return NULL; | |
3538 | ||
f5e7840b TR |
3539 | state = kmalloc(sizeof(*state), GFP_KERNEL); |
3540 | if (state) | |
3541 | __drm_atomic_helper_connector_duplicate_state(connector, state); | |
3542 | ||
3543 | return state; | |
d461701c DV |
3544 | } |
3545 | EXPORT_SYMBOL(drm_atomic_helper_connector_duplicate_state); | |
3546 | ||
397fd77c TR |
3547 | /** |
3548 | * drm_atomic_helper_duplicate_state - duplicate an atomic state object | |
3549 | * @dev: DRM device | |
3550 | * @ctx: lock acquisition context | |
3551 | * | |
3552 | * Makes a copy of the current atomic state by looping over all objects and | |
14942760 TR |
3553 | * duplicating their respective states. This is used for example by suspend/ |
3554 | * resume support code to save the state prior to suspend such that it can | |
3555 | * be restored upon resume. | |
397fd77c TR |
3556 | * |
3557 | * Note that this treats atomic state as persistent between save and restore. | |
3558 | * Drivers must make sure that this is possible and won't result in confusion | |
3559 | * or erroneous behaviour. | |
3560 | * | |
3561 | * Note that if callers haven't already acquired all modeset locks this might | |
3562 | * return -EDEADLK, which must be handled by calling drm_modeset_backoff(). | |
3563 | * | |
3564 | * Returns: | |
3565 | * A pointer to the copy of the atomic state object on success or an | |
3566 | * ERR_PTR()-encoded error code on failure. | |
14942760 TR |
3567 | * |
3568 | * See also: | |
3569 | * drm_atomic_helper_suspend(), drm_atomic_helper_resume() | |
397fd77c TR |
3570 | */ |
3571 | struct drm_atomic_state * | |
3572 | drm_atomic_helper_duplicate_state(struct drm_device *dev, | |
3573 | struct drm_modeset_acquire_ctx *ctx) | |
3574 | { | |
3575 | struct drm_atomic_state *state; | |
3576 | struct drm_connector *conn; | |
c36a3254 | 3577 | struct drm_connector_list_iter conn_iter; |
397fd77c TR |
3578 | struct drm_plane *plane; |
3579 | struct drm_crtc *crtc; | |
3580 | int err = 0; | |
3581 | ||
3582 | state = drm_atomic_state_alloc(dev); | |
3583 | if (!state) | |
3584 | return ERR_PTR(-ENOMEM); | |
3585 | ||
3586 | state->acquire_ctx = ctx; | |
3587 | ||
3588 | drm_for_each_crtc(crtc, dev) { | |
3589 | struct drm_crtc_state *crtc_state; | |
3590 | ||
3591 | crtc_state = drm_atomic_get_crtc_state(state, crtc); | |
3592 | if (IS_ERR(crtc_state)) { | |
3593 | err = PTR_ERR(crtc_state); | |
3594 | goto free; | |
3595 | } | |
3596 | } | |
3597 | ||
3598 | drm_for_each_plane(plane, dev) { | |
3599 | struct drm_plane_state *plane_state; | |
3600 | ||
3601 | plane_state = drm_atomic_get_plane_state(state, plane); | |
3602 | if (IS_ERR(plane_state)) { | |
3603 | err = PTR_ERR(plane_state); | |
3604 | goto free; | |
3605 | } | |
3606 | } | |
3607 | ||
b982dab1 | 3608 | drm_connector_list_iter_begin(dev, &conn_iter); |
c36a3254 | 3609 | drm_for_each_connector_iter(conn, &conn_iter) { |
397fd77c TR |
3610 | struct drm_connector_state *conn_state; |
3611 | ||
3612 | conn_state = drm_atomic_get_connector_state(state, conn); | |
3613 | if (IS_ERR(conn_state)) { | |
3614 | err = PTR_ERR(conn_state); | |
b982dab1 | 3615 | drm_connector_list_iter_end(&conn_iter); |
397fd77c TR |
3616 | goto free; |
3617 | } | |
3618 | } | |
b982dab1 | 3619 | drm_connector_list_iter_end(&conn_iter); |
397fd77c TR |
3620 | |
3621 | /* clear the acquire context so that it isn't accidentally reused */ | |
3622 | state->acquire_ctx = NULL; | |
3623 | ||
3624 | free: | |
3625 | if (err < 0) { | |
0853695c | 3626 | drm_atomic_state_put(state); |
397fd77c TR |
3627 | state = ERR_PTR(err); |
3628 | } | |
3629 | ||
3630 | return state; | |
3631 | } | |
3632 | EXPORT_SYMBOL(drm_atomic_helper_duplicate_state); | |
3633 | ||
f5e7840b TR |
3634 | /** |
3635 | * __drm_atomic_helper_connector_destroy_state - release connector state | |
f5e7840b TR |
3636 | * @state: connector state object to release |
3637 | * | |
3638 | * Releases all resources stored in the connector state without actually | |
3639 | * freeing the memory of the connector state. This is useful for drivers that | |
3640 | * subclass the connector state. | |
3641 | */ | |
3642 | void | |
fabd9106 | 3643 | __drm_atomic_helper_connector_destroy_state(struct drm_connector_state *state) |
f5e7840b | 3644 | { |
d2307dea | 3645 | if (state->crtc) |
ad093607 | 3646 | drm_connector_put(state->connector); |
21a01abb ML |
3647 | |
3648 | if (state->commit) | |
3649 | drm_crtc_commit_put(state->commit); | |
f5e7840b TR |
3650 | } |
3651 | EXPORT_SYMBOL(__drm_atomic_helper_connector_destroy_state); | |
3652 | ||
d461701c DV |
3653 | /** |
3654 | * drm_atomic_helper_connector_destroy_state - default state destroy hook | |
3655 | * @connector: drm connector | |
3656 | * @state: connector state object to release | |
3657 | * | |
3658 | * Default connector state destroy hook for drivers which don't have their own | |
3659 | * subclassed connector state structure. | |
3660 | */ | |
3661 | void drm_atomic_helper_connector_destroy_state(struct drm_connector *connector, | |
3662 | struct drm_connector_state *state) | |
3663 | { | |
fabd9106 | 3664 | __drm_atomic_helper_connector_destroy_state(state); |
d461701c DV |
3665 | kfree(state); |
3666 | } | |
3667 | EXPORT_SYMBOL(drm_atomic_helper_connector_destroy_state); | |
5488dc16 LL |
3668 | |
3669 | /** | |
3670 | * drm_atomic_helper_legacy_gamma_set - set the legacy gamma correction table | |
3671 | * @crtc: CRTC object | |
3672 | * @red: red correction table | |
3673 | * @green: green correction table | |
3674 | * @blue: green correction table | |
5488dc16 | 3675 | * @size: size of the tables |
6d124ff8 | 3676 | * @ctx: lock acquire context |
5488dc16 LL |
3677 | * |
3678 | * Implements support for legacy gamma correction table for drivers | |
3679 | * that support color management through the DEGAMMA_LUT/GAMMA_LUT | |
2e38178e DV |
3680 | * properties. See drm_crtc_enable_color_mgmt() and the containing chapter for |
3681 | * how the atomic color management and gamma tables work. | |
5488dc16 | 3682 | */ |
7ea77283 ML |
3683 | int drm_atomic_helper_legacy_gamma_set(struct drm_crtc *crtc, |
3684 | u16 *red, u16 *green, u16 *blue, | |
6d124ff8 DV |
3685 | uint32_t size, |
3686 | struct drm_modeset_acquire_ctx *ctx) | |
5488dc16 LL |
3687 | { |
3688 | struct drm_device *dev = crtc->dev; | |
5488dc16 LL |
3689 | struct drm_atomic_state *state; |
3690 | struct drm_crtc_state *crtc_state; | |
3691 | struct drm_property_blob *blob = NULL; | |
3692 | struct drm_color_lut *blob_data; | |
3693 | int i, ret = 0; | |
e2b9dd30 | 3694 | bool replaced; |
5488dc16 LL |
3695 | |
3696 | state = drm_atomic_state_alloc(crtc->dev); | |
3697 | if (!state) | |
7ea77283 | 3698 | return -ENOMEM; |
5488dc16 LL |
3699 | |
3700 | blob = drm_property_create_blob(dev, | |
3701 | sizeof(struct drm_color_lut) * size, | |
3702 | NULL); | |
562c5b4d LL |
3703 | if (IS_ERR(blob)) { |
3704 | ret = PTR_ERR(blob); | |
c1f415c9 | 3705 | blob = NULL; |
5488dc16 LL |
3706 | goto fail; |
3707 | } | |
3708 | ||
3709 | /* Prepare GAMMA_LUT with the legacy values. */ | |
3710 | blob_data = (struct drm_color_lut *) blob->data; | |
3711 | for (i = 0; i < size; i++) { | |
3712 | blob_data[i].red = red[i]; | |
3713 | blob_data[i].green = green[i]; | |
3714 | blob_data[i].blue = blue[i]; | |
3715 | } | |
3716 | ||
3a09f737 | 3717 | state->acquire_ctx = ctx; |
5488dc16 LL |
3718 | crtc_state = drm_atomic_get_crtc_state(state, crtc); |
3719 | if (IS_ERR(crtc_state)) { | |
3720 | ret = PTR_ERR(crtc_state); | |
3721 | goto fail; | |
3722 | } | |
3723 | ||
3724 | /* Reset DEGAMMA_LUT and CTM properties. */ | |
e2b9dd30 PR |
3725 | replaced = drm_property_replace_blob(&crtc_state->degamma_lut, NULL); |
3726 | replaced |= drm_property_replace_blob(&crtc_state->ctm, NULL); | |
3727 | replaced |= drm_property_replace_blob(&crtc_state->gamma_lut, blob); | |
3728 | crtc_state->color_mgmt_changed |= replaced; | |
5488dc16 LL |
3729 | |
3730 | ret = drm_atomic_commit(state); | |
5488dc16 | 3731 | |
3a09f737 | 3732 | fail: |
0853695c | 3733 | drm_atomic_state_put(state); |
6472e509 | 3734 | drm_property_blob_put(blob); |
7ea77283 | 3735 | return ret; |
5488dc16 LL |
3736 | } |
3737 | EXPORT_SYMBOL(drm_atomic_helper_legacy_gamma_set); | |
a4370c77 VS |
3738 | |
3739 | /** | |
3740 | * __drm_atomic_helper_private_duplicate_state - copy atomic private state | |
3741 | * @obj: CRTC object | |
3742 | * @state: new private object state | |
3743 | * | |
3744 | * Copies atomic state from a private objects's current state and resets inferred values. | |
3745 | * This is useful for drivers that subclass the private state. | |
3746 | */ | |
3747 | void __drm_atomic_helper_private_obj_duplicate_state(struct drm_private_obj *obj, | |
3748 | struct drm_private_state *state) | |
3749 | { | |
3750 | memcpy(state, obj->state, sizeof(*state)); | |
3751 | } | |
3752 | EXPORT_SYMBOL(__drm_atomic_helper_private_obj_duplicate_state); |