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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 | |
44d1240d MS |
35 | #include "drm_crtc_internal.h" |
36 | ||
3150c7d0 DV |
37 | /** |
38 | * DOC: overview | |
39 | * | |
40 | * This helper library provides implementations of check and commit functions on | |
41 | * top of the CRTC modeset helper callbacks and the plane helper callbacks. It | |
42 | * also provides convenience implementations for the atomic state handling | |
43 | * callbacks for drivers which don't need to subclass the drm core structures to | |
44 | * add their own additional internal state. | |
45 | * | |
46 | * This library also provides default implementations for the check callback in | |
26196f7e DV |
47 | * drm_atomic_helper_check() and for the commit callback with |
48 | * drm_atomic_helper_commit(). But the individual stages and callbacks are | |
49 | * exposed to allow drivers to mix and match and e.g. use the plane helpers only | |
3150c7d0 DV |
50 | * together with a driver private modeset implementation. |
51 | * | |
52 | * This library also provides implementations for all the legacy driver | |
26196f7e DV |
53 | * interfaces on top of the atomic interface. See drm_atomic_helper_set_config(), |
54 | * drm_atomic_helper_disable_plane(), drm_atomic_helper_disable_plane() and the | |
3150c7d0 DV |
55 | * various functions to implement set_property callbacks. New drivers must not |
56 | * implement these functions themselves but must use the provided helpers. | |
092d01da DV |
57 | * |
58 | * The atomic helper uses the same function table structures as all other | |
ea0dd85a DV |
59 | * modesetting helpers. See the documentation for &struct drm_crtc_helper_funcs, |
60 | * struct &drm_encoder_helper_funcs and &struct drm_connector_helper_funcs. It | |
61 | * also shares the &struct drm_plane_helper_funcs function table with the plane | |
092d01da | 62 | * helpers. |
3150c7d0 | 63 | */ |
c2fcd274 DV |
64 | static void |
65 | drm_atomic_helper_plane_changed(struct drm_atomic_state *state, | |
66 | struct drm_plane_state *plane_state, | |
67 | struct drm_plane *plane) | |
68 | { | |
69 | struct drm_crtc_state *crtc_state; | |
70 | ||
71 | if (plane->state->crtc) { | |
2943ef32 AH |
72 | crtc_state = drm_atomic_get_existing_crtc_state(state, |
73 | plane->state->crtc); | |
c2fcd274 DV |
74 | |
75 | if (WARN_ON(!crtc_state)) | |
76 | return; | |
77 | ||
78 | crtc_state->planes_changed = true; | |
79 | } | |
80 | ||
81 | if (plane_state->crtc) { | |
2943ef32 AH |
82 | crtc_state = drm_atomic_get_existing_crtc_state(state, |
83 | plane_state->crtc); | |
c2fcd274 DV |
84 | |
85 | if (WARN_ON(!crtc_state)) | |
86 | return; | |
87 | ||
88 | crtc_state->planes_changed = true; | |
89 | } | |
90 | } | |
91 | ||
8248b65d ML |
92 | static int handle_conflicting_encoders(struct drm_atomic_state *state, |
93 | bool disable_conflicting_encoders) | |
97ac3204 | 94 | { |
97ac3204 | 95 | struct drm_connector_state *conn_state; |
40616a26 | 96 | struct drm_connector *connector; |
c36a3254 | 97 | struct drm_connector_list_iter conn_iter; |
40616a26 ML |
98 | struct drm_encoder *encoder; |
99 | unsigned encoder_mask = 0; | |
c36a3254 | 100 | int i, ret = 0; |
97ac3204 | 101 | |
8248b65d ML |
102 | /* |
103 | * First loop, find all newly assigned encoders from the connectors | |
104 | * part of the state. If the same encoder is assigned to multiple | |
105 | * connectors bail out. | |
106 | */ | |
97ac3204 | 107 | for_each_connector_in_state(state, connector, conn_state, i) { |
40616a26 ML |
108 | const struct drm_connector_helper_funcs *funcs = connector->helper_private; |
109 | struct drm_encoder *new_encoder; | |
110 | ||
111 | if (!conn_state->crtc) | |
97ac3204 DV |
112 | continue; |
113 | ||
40616a26 ML |
114 | if (funcs->atomic_best_encoder) |
115 | new_encoder = funcs->atomic_best_encoder(connector, conn_state); | |
a0909cc5 | 116 | else if (funcs->best_encoder) |
40616a26 | 117 | new_encoder = funcs->best_encoder(connector); |
a0909cc5 BB |
118 | else |
119 | new_encoder = drm_atomic_helper_best_encoder(connector); | |
40616a26 | 120 | |
8248b65d ML |
121 | if (new_encoder) { |
122 | if (encoder_mask & (1 << drm_encoder_index(new_encoder))) { | |
123 | DRM_DEBUG_ATOMIC("[ENCODER:%d:%s] on [CONNECTOR:%d:%s] already assigned\n", | |
124 | new_encoder->base.id, new_encoder->name, | |
125 | connector->base.id, connector->name); | |
126 | ||
127 | return -EINVAL; | |
128 | } | |
129 | ||
40616a26 | 130 | encoder_mask |= 1 << drm_encoder_index(new_encoder); |
8248b65d | 131 | } |
97ac3204 DV |
132 | } |
133 | ||
8248b65d ML |
134 | if (!encoder_mask) |
135 | return 0; | |
97ac3204 | 136 | |
8248b65d ML |
137 | /* |
138 | * Second loop, iterate over all connectors not part of the state. | |
139 | * | |
140 | * If a conflicting encoder is found and disable_conflicting_encoders | |
141 | * is not set, an error is returned. Userspace can provide a solution | |
142 | * through the atomic ioctl. | |
143 | * | |
144 | * If the flag is set conflicting connectors are removed from the crtc | |
145 | * and the crtc is disabled if no encoder is left. This preserves | |
146 | * compatibility with the legacy set_config behavior. | |
147 | */ | |
c36a3254 DV |
148 | drm_connector_list_iter_get(state->dev, &conn_iter); |
149 | drm_for_each_connector_iter(connector, &conn_iter) { | |
40616a26 | 150 | struct drm_crtc_state *crtc_state; |
623369e5 | 151 | |
40616a26 ML |
152 | if (drm_atomic_get_existing_connector_state(state, connector)) |
153 | continue; | |
623369e5 | 154 | |
40616a26 ML |
155 | encoder = connector->state->best_encoder; |
156 | if (!encoder || !(encoder_mask & (1 << drm_encoder_index(encoder)))) | |
623369e5 DV |
157 | continue; |
158 | ||
8248b65d ML |
159 | if (!disable_conflicting_encoders) { |
160 | DRM_DEBUG_ATOMIC("[ENCODER:%d:%s] in use on [CRTC:%d:%s] by [CONNECTOR:%d:%s]\n", | |
161 | encoder->base.id, encoder->name, | |
162 | connector->state->crtc->base.id, | |
163 | connector->state->crtc->name, | |
164 | connector->base.id, connector->name); | |
c36a3254 DV |
165 | ret = -EINVAL; |
166 | goto out; | |
8248b65d ML |
167 | } |
168 | ||
40616a26 | 169 | conn_state = drm_atomic_get_connector_state(state, connector); |
c36a3254 DV |
170 | if (IS_ERR(conn_state)) { |
171 | ret = PTR_ERR(conn_state); | |
172 | goto out; | |
173 | } | |
40616a26 ML |
174 | |
175 | DRM_DEBUG_ATOMIC("[ENCODER:%d:%s] in use on [CRTC:%d:%s], disabling [CONNECTOR:%d:%s]\n", | |
176 | encoder->base.id, encoder->name, | |
177 | conn_state->crtc->base.id, conn_state->crtc->name, | |
178 | connector->base.id, connector->name); | |
179 | ||
180 | crtc_state = drm_atomic_get_existing_crtc_state(state, conn_state->crtc); | |
181 | ||
182 | ret = drm_atomic_set_crtc_for_connector(conn_state, NULL); | |
183 | if (ret) | |
c36a3254 | 184 | goto out; |
40616a26 ML |
185 | |
186 | if (!crtc_state->connector_mask) { | |
187 | ret = drm_atomic_set_mode_prop_for_crtc(crtc_state, | |
188 | NULL); | |
189 | if (ret < 0) | |
c36a3254 | 190 | goto out; |
40616a26 ML |
191 | |
192 | crtc_state->active = false; | |
193 | } | |
623369e5 | 194 | } |
c36a3254 DV |
195 | out: |
196 | drm_connector_list_iter_put(&conn_iter); | |
623369e5 | 197 | |
c36a3254 | 198 | return ret; |
623369e5 DV |
199 | } |
200 | ||
e87a52b3 ML |
201 | static void |
202 | set_best_encoder(struct drm_atomic_state *state, | |
203 | struct drm_connector_state *conn_state, | |
204 | struct drm_encoder *encoder) | |
205 | { | |
206 | struct drm_crtc_state *crtc_state; | |
207 | struct drm_crtc *crtc; | |
208 | ||
209 | if (conn_state->best_encoder) { | |
210 | /* Unset the encoder_mask in the old crtc state. */ | |
211 | crtc = conn_state->connector->state->crtc; | |
212 | ||
213 | /* A NULL crtc is an error here because we should have | |
214 | * duplicated a NULL best_encoder when crtc was NULL. | |
215 | * As an exception restoring duplicated atomic state | |
216 | * during resume is allowed, so don't warn when | |
217 | * best_encoder is equal to encoder we intend to set. | |
218 | */ | |
219 | WARN_ON(!crtc && encoder != conn_state->best_encoder); | |
220 | if (crtc) { | |
221 | crtc_state = drm_atomic_get_existing_crtc_state(state, crtc); | |
222 | ||
223 | crtc_state->encoder_mask &= | |
224 | ~(1 << drm_encoder_index(conn_state->best_encoder)); | |
225 | } | |
226 | } | |
227 | ||
228 | if (encoder) { | |
229 | crtc = conn_state->crtc; | |
230 | WARN_ON(!crtc); | |
231 | if (crtc) { | |
232 | crtc_state = drm_atomic_get_existing_crtc_state(state, crtc); | |
233 | ||
234 | crtc_state->encoder_mask |= | |
235 | 1 << drm_encoder_index(encoder); | |
236 | } | |
237 | } | |
238 | ||
239 | conn_state->best_encoder = encoder; | |
240 | } | |
241 | ||
ec5aaa58 | 242 | static void |
623369e5 | 243 | steal_encoder(struct drm_atomic_state *state, |
ff19b786 | 244 | struct drm_encoder *encoder) |
623369e5 | 245 | { |
623369e5 DV |
246 | struct drm_crtc_state *crtc_state; |
247 | struct drm_connector *connector; | |
248 | struct drm_connector_state *connector_state; | |
ec5aaa58 | 249 | int i; |
623369e5 | 250 | |
ec5aaa58 | 251 | for_each_connector_in_state(state, connector, connector_state, i) { |
ff19b786 | 252 | struct drm_crtc *encoder_crtc; |
623369e5 | 253 | |
e87a52b3 | 254 | if (connector_state->best_encoder != encoder) |
623369e5 DV |
255 | continue; |
256 | ||
ff19b786 | 257 | encoder_crtc = connector->state->crtc; |
623369e5 | 258 | |
ff19b786 ML |
259 | DRM_DEBUG_ATOMIC("[ENCODER:%d:%s] in use on [CRTC:%d:%s], stealing it\n", |
260 | encoder->base.id, encoder->name, | |
261 | encoder_crtc->base.id, encoder_crtc->name); | |
e87a52b3 ML |
262 | |
263 | set_best_encoder(state, connector_state, NULL); | |
623369e5 | 264 | |
ff19b786 ML |
265 | crtc_state = drm_atomic_get_existing_crtc_state(state, encoder_crtc); |
266 | crtc_state->connectors_changed = true; | |
267 | ||
ec5aaa58 | 268 | return; |
623369e5 | 269 | } |
623369e5 DV |
270 | } |
271 | ||
272 | static int | |
9459545b ML |
273 | update_connector_routing(struct drm_atomic_state *state, |
274 | struct drm_connector *connector, | |
275 | struct drm_connector_state *connector_state) | |
623369e5 | 276 | { |
b5ceff20 | 277 | const struct drm_connector_helper_funcs *funcs; |
623369e5 | 278 | struct drm_encoder *new_encoder; |
623369e5 | 279 | struct drm_crtc_state *crtc_state; |
623369e5 | 280 | |
17a38d9c DV |
281 | DRM_DEBUG_ATOMIC("Updating routing for [CONNECTOR:%d:%s]\n", |
282 | connector->base.id, | |
283 | connector->name); | |
623369e5 DV |
284 | |
285 | if (connector->state->crtc != connector_state->crtc) { | |
286 | if (connector->state->crtc) { | |
9b8d1e53 | 287 | crtc_state = drm_atomic_get_existing_crtc_state(state, connector->state->crtc); |
fc596660 | 288 | crtc_state->connectors_changed = true; |
623369e5 DV |
289 | } |
290 | ||
291 | if (connector_state->crtc) { | |
9b8d1e53 | 292 | crtc_state = drm_atomic_get_existing_crtc_state(state, connector_state->crtc); |
fc596660 | 293 | crtc_state->connectors_changed = true; |
623369e5 DV |
294 | } |
295 | } | |
296 | ||
297 | if (!connector_state->crtc) { | |
17a38d9c | 298 | DRM_DEBUG_ATOMIC("Disabling [CONNECTOR:%d:%s]\n", |
623369e5 DV |
299 | connector->base.id, |
300 | connector->name); | |
301 | ||
e87a52b3 | 302 | set_best_encoder(state, connector_state, NULL); |
623369e5 DV |
303 | |
304 | return 0; | |
305 | } | |
306 | ||
307 | funcs = connector->helper_private; | |
3b8a684b DV |
308 | |
309 | if (funcs->atomic_best_encoder) | |
310 | new_encoder = funcs->atomic_best_encoder(connector, | |
311 | connector_state); | |
c61b93fe | 312 | else if (funcs->best_encoder) |
3b8a684b | 313 | new_encoder = funcs->best_encoder(connector); |
c61b93fe BB |
314 | else |
315 | new_encoder = drm_atomic_helper_best_encoder(connector); | |
623369e5 DV |
316 | |
317 | if (!new_encoder) { | |
17a38d9c DV |
318 | DRM_DEBUG_ATOMIC("No suitable encoder found for [CONNECTOR:%d:%s]\n", |
319 | connector->base.id, | |
320 | connector->name); | |
623369e5 DV |
321 | return -EINVAL; |
322 | } | |
323 | ||
5481c8fb | 324 | if (!drm_encoder_crtc_ok(new_encoder, connector_state->crtc)) { |
6ac7c548 | 325 | DRM_DEBUG_ATOMIC("[ENCODER:%d:%s] incompatible with [CRTC:%d:%s]\n", |
5481c8fb DV |
326 | new_encoder->base.id, |
327 | new_encoder->name, | |
6ac7c548 RK |
328 | connector_state->crtc->base.id, |
329 | connector_state->crtc->name); | |
5481c8fb DV |
330 | return -EINVAL; |
331 | } | |
332 | ||
623369e5 | 333 | if (new_encoder == connector_state->best_encoder) { |
e87a52b3 ML |
334 | set_best_encoder(state, connector_state, new_encoder); |
335 | ||
fa3ab4c2 | 336 | DRM_DEBUG_ATOMIC("[CONNECTOR:%d:%s] keeps [ENCODER:%d:%s], now on [CRTC:%d:%s]\n", |
17a38d9c DV |
337 | connector->base.id, |
338 | connector->name, | |
339 | new_encoder->base.id, | |
340 | new_encoder->name, | |
fa3ab4c2 VS |
341 | connector_state->crtc->base.id, |
342 | connector_state->crtc->name); | |
623369e5 DV |
343 | |
344 | return 0; | |
345 | } | |
346 | ||
ec5aaa58 | 347 | steal_encoder(state, new_encoder); |
6ea76f3c | 348 | |
e87a52b3 ML |
349 | set_best_encoder(state, connector_state, new_encoder); |
350 | ||
9b8d1e53 | 351 | crtc_state = drm_atomic_get_existing_crtc_state(state, connector_state->crtc); |
fc596660 | 352 | crtc_state->connectors_changed = true; |
623369e5 | 353 | |
fa3ab4c2 | 354 | DRM_DEBUG_ATOMIC("[CONNECTOR:%d:%s] using [ENCODER:%d:%s] on [CRTC:%d:%s]\n", |
17a38d9c DV |
355 | connector->base.id, |
356 | connector->name, | |
357 | new_encoder->base.id, | |
358 | new_encoder->name, | |
fa3ab4c2 VS |
359 | connector_state->crtc->base.id, |
360 | connector_state->crtc->name); | |
623369e5 DV |
361 | |
362 | return 0; | |
363 | } | |
364 | ||
365 | static int | |
366 | mode_fixup(struct drm_atomic_state *state) | |
367 | { | |
df63b999 | 368 | struct drm_crtc *crtc; |
623369e5 | 369 | struct drm_crtc_state *crtc_state; |
df63b999 | 370 | struct drm_connector *connector; |
623369e5 DV |
371 | struct drm_connector_state *conn_state; |
372 | int i; | |
f9ad86e4 | 373 | int ret; |
623369e5 | 374 | |
df63b999 | 375 | for_each_crtc_in_state(state, crtc, crtc_state, i) { |
fc596660 ML |
376 | if (!crtc_state->mode_changed && |
377 | !crtc_state->connectors_changed) | |
623369e5 DV |
378 | continue; |
379 | ||
380 | drm_mode_copy(&crtc_state->adjusted_mode, &crtc_state->mode); | |
381 | } | |
382 | ||
df63b999 | 383 | for_each_connector_in_state(state, connector, conn_state, i) { |
b5ceff20 | 384 | const struct drm_encoder_helper_funcs *funcs; |
623369e5 DV |
385 | struct drm_encoder *encoder; |
386 | ||
623369e5 DV |
387 | WARN_ON(!!conn_state->best_encoder != !!conn_state->crtc); |
388 | ||
389 | if (!conn_state->crtc || !conn_state->best_encoder) | |
390 | continue; | |
391 | ||
2943ef32 AH |
392 | crtc_state = drm_atomic_get_existing_crtc_state(state, |
393 | conn_state->crtc); | |
623369e5 DV |
394 | |
395 | /* | |
396 | * Each encoder has at most one connector (since we always steal | |
397 | * it away), so we won't call ->mode_fixup twice. | |
398 | */ | |
399 | encoder = conn_state->best_encoder; | |
400 | funcs = encoder->helper_private; | |
401 | ||
862e686c AT |
402 | ret = drm_bridge_mode_fixup(encoder->bridge, &crtc_state->mode, |
403 | &crtc_state->adjusted_mode); | |
404 | if (!ret) { | |
405 | DRM_DEBUG_ATOMIC("Bridge fixup failed\n"); | |
406 | return -EINVAL; | |
623369e5 DV |
407 | } |
408 | ||
2827635e | 409 | if (funcs && funcs->atomic_check) { |
4cd4df80 TR |
410 | ret = funcs->atomic_check(encoder, crtc_state, |
411 | conn_state); | |
412 | if (ret) { | |
17a38d9c DV |
413 | DRM_DEBUG_ATOMIC("[ENCODER:%d:%s] check failed\n", |
414 | encoder->base.id, encoder->name); | |
4cd4df80 TR |
415 | return ret; |
416 | } | |
2827635e | 417 | } else if (funcs && funcs->mode_fixup) { |
4cd4df80 TR |
418 | ret = funcs->mode_fixup(encoder, &crtc_state->mode, |
419 | &crtc_state->adjusted_mode); | |
420 | if (!ret) { | |
17a38d9c DV |
421 | DRM_DEBUG_ATOMIC("[ENCODER:%d:%s] fixup failed\n", |
422 | encoder->base.id, encoder->name); | |
4cd4df80 TR |
423 | return -EINVAL; |
424 | } | |
623369e5 DV |
425 | } |
426 | } | |
427 | ||
df63b999 | 428 | for_each_crtc_in_state(state, crtc, crtc_state, i) { |
b5ceff20 | 429 | const struct drm_crtc_helper_funcs *funcs; |
623369e5 | 430 | |
f55f1701 LY |
431 | if (!crtc_state->enable) |
432 | continue; | |
433 | ||
fc596660 ML |
434 | if (!crtc_state->mode_changed && |
435 | !crtc_state->connectors_changed) | |
623369e5 DV |
436 | continue; |
437 | ||
438 | funcs = crtc->helper_private; | |
840bfe95 ACO |
439 | if (!funcs->mode_fixup) |
440 | continue; | |
441 | ||
623369e5 DV |
442 | ret = funcs->mode_fixup(crtc, &crtc_state->mode, |
443 | &crtc_state->adjusted_mode); | |
444 | if (!ret) { | |
fa3ab4c2 VS |
445 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] fixup failed\n", |
446 | crtc->base.id, crtc->name); | |
623369e5 DV |
447 | return -EINVAL; |
448 | } | |
449 | } | |
450 | ||
451 | return 0; | |
452 | } | |
453 | ||
d9b13620 | 454 | /** |
f98bd3ef | 455 | * drm_atomic_helper_check_modeset - validate state object for modeset changes |
d9b13620 DV |
456 | * @dev: DRM device |
457 | * @state: the driver state object | |
458 | * | |
459 | * Check the state object to see if the requested state is physically possible. | |
460 | * This does all the crtc and connector related computations for an atomic | |
fc596660 | 461 | * update and adds any additional connectors needed for full modesets and calls |
6806cdf9 DV |
462 | * down into &drm_crtc_helper_funcs.mode_fixup and |
463 | * &drm_encoder_helper_funcs.mode_fixup or | |
464 | * &drm_encoder_helper_funcs.atomic_check functions of the driver backend. | |
465 | * | |
466 | * &drm_crtc_state.mode_changed is set when the input mode is changed. | |
467 | * &drm_crtc_state.connectors_changed is set when a connector is added or | |
468 | * removed from the crtc. &drm_crtc_state.active_changed is set when | |
469 | * &drm_crtc_state.active changes, which is used for DPMS. | |
d807ed1c | 470 | * See also: drm_atomic_crtc_needs_modeset() |
d9b13620 DV |
471 | * |
472 | * IMPORTANT: | |
473 | * | |
6806cdf9 DV |
474 | * Drivers which set &drm_crtc_state.mode_changed (e.g. in their |
475 | * &drm_plane_helper_funcs.atomic_check hooks if a plane update can't be done | |
476 | * without a full modeset) _must_ call this function afterwards after that | |
477 | * change. It is permitted to call this function multiple times for the same | |
478 | * update, e.g. when the &drm_crtc_helper_funcs.atomic_check functions depend | |
479 | * upon the adjusted dotclock for fifo space allocation and watermark | |
480 | * computation. | |
d9b13620 | 481 | * |
c39032a8 | 482 | * RETURNS: |
d9b13620 DV |
483 | * Zero for success or -errno |
484 | */ | |
485 | int | |
934ce1c2 | 486 | drm_atomic_helper_check_modeset(struct drm_device *dev, |
623369e5 DV |
487 | struct drm_atomic_state *state) |
488 | { | |
623369e5 DV |
489 | struct drm_crtc *crtc; |
490 | struct drm_crtc_state *crtc_state; | |
df63b999 ACO |
491 | struct drm_connector *connector; |
492 | struct drm_connector_state *connector_state; | |
623369e5 DV |
493 | int i, ret; |
494 | ||
df63b999 | 495 | for_each_crtc_in_state(state, crtc, crtc_state, i) { |
623369e5 | 496 | if (!drm_mode_equal(&crtc->state->mode, &crtc_state->mode)) { |
fa3ab4c2 VS |
497 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] mode changed\n", |
498 | crtc->base.id, crtc->name); | |
623369e5 DV |
499 | crtc_state->mode_changed = true; |
500 | } | |
501 | ||
502 | if (crtc->state->enable != crtc_state->enable) { | |
fa3ab4c2 VS |
503 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] enable changed\n", |
504 | crtc->base.id, crtc->name); | |
fc596660 ML |
505 | |
506 | /* | |
507 | * For clarity this assignment is done here, but | |
508 | * enable == 0 is only true when there are no | |
509 | * connectors and a NULL mode. | |
510 | * | |
511 | * The other way around is true as well. enable != 0 | |
512 | * iff connectors are attached and a mode is set. | |
513 | */ | |
623369e5 | 514 | crtc_state->mode_changed = true; |
fc596660 | 515 | crtc_state->connectors_changed = true; |
623369e5 DV |
516 | } |
517 | } | |
518 | ||
8248b65d ML |
519 | ret = handle_conflicting_encoders(state, state->legacy_set_config); |
520 | if (ret) | |
521 | return ret; | |
40616a26 | 522 | |
df63b999 | 523 | for_each_connector_in_state(state, connector, connector_state, i) { |
623369e5 | 524 | /* |
d807ed1c BS |
525 | * This only sets crtc->connectors_changed for routing changes, |
526 | * drivers must set crtc->connectors_changed themselves when | |
527 | * connector properties need to be updated. | |
623369e5 | 528 | */ |
9459545b ML |
529 | ret = update_connector_routing(state, connector, |
530 | connector_state); | |
623369e5 DV |
531 | if (ret) |
532 | return ret; | |
40ee6fbe MN |
533 | if (connector->state->crtc) { |
534 | crtc_state = drm_atomic_get_existing_crtc_state(state, | |
535 | connector->state->crtc); | |
536 | if (connector->state->link_status != | |
537 | connector_state->link_status) | |
538 | crtc_state->connectors_changed = true; | |
539 | } | |
623369e5 DV |
540 | } |
541 | ||
542 | /* | |
543 | * After all the routing has been prepared we need to add in any | |
544 | * connector which is itself unchanged, but who's crtc changes it's | |
545 | * configuration. This must be done before calling mode_fixup in case a | |
546 | * crtc only changed its mode but has the same set of connectors. | |
547 | */ | |
df63b999 | 548 | for_each_crtc_in_state(state, crtc, crtc_state, i) { |
14de6c44 ML |
549 | bool has_connectors = |
550 | !!crtc_state->connector_mask; | |
623369e5 | 551 | |
eab3bbef DV |
552 | /* |
553 | * We must set ->active_changed after walking connectors for | |
554 | * otherwise an update that only changes active would result in | |
555 | * a full modeset because update_connector_routing force that. | |
556 | */ | |
557 | if (crtc->state->active != crtc_state->active) { | |
fa3ab4c2 VS |
558 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] active changed\n", |
559 | crtc->base.id, crtc->name); | |
eab3bbef DV |
560 | crtc_state->active_changed = true; |
561 | } | |
562 | ||
2465ff62 | 563 | if (!drm_atomic_crtc_needs_modeset(crtc_state)) |
623369e5 DV |
564 | continue; |
565 | ||
fa3ab4c2 VS |
566 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] needs all connectors, enable: %c, active: %c\n", |
567 | crtc->base.id, crtc->name, | |
17a38d9c | 568 | crtc_state->enable ? 'y' : 'n', |
fa3ab4c2 | 569 | crtc_state->active ? 'y' : 'n'); |
623369e5 DV |
570 | |
571 | ret = drm_atomic_add_affected_connectors(state, crtc); | |
572 | if (ret != 0) | |
573 | return ret; | |
574 | ||
57744aa7 ML |
575 | ret = drm_atomic_add_affected_planes(state, crtc); |
576 | if (ret != 0) | |
577 | return ret; | |
578 | ||
14de6c44 | 579 | if (crtc_state->enable != has_connectors) { |
fa3ab4c2 VS |
580 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] enabled/connectors mismatch\n", |
581 | crtc->base.id, crtc->name); | |
623369e5 DV |
582 | |
583 | return -EINVAL; | |
584 | } | |
585 | } | |
586 | ||
587 | return mode_fixup(state); | |
588 | } | |
d9b13620 | 589 | EXPORT_SYMBOL(drm_atomic_helper_check_modeset); |
623369e5 | 590 | |
c2fcd274 | 591 | /** |
f98bd3ef | 592 | * drm_atomic_helper_check_planes - validate state object for planes changes |
c2fcd274 DV |
593 | * @dev: DRM device |
594 | * @state: the driver state object | |
595 | * | |
596 | * Check the state object to see if the requested state is physically possible. | |
d9b13620 | 597 | * This does all the plane update related checks using by calling into the |
6806cdf9 DV |
598 | * &drm_crtc_helper_funcs.atomic_check and &drm_plane_helper_funcs.atomic_check |
599 | * hooks provided by the driver. | |
c2fcd274 | 600 | * |
6806cdf9 | 601 | * It also sets &drm_crtc_state.planes_changed to indicate that a crtc has |
fc596660 ML |
602 | * updated planes. |
603 | * | |
c39032a8 | 604 | * RETURNS: |
c2fcd274 DV |
605 | * Zero for success or -errno |
606 | */ | |
d9b13620 DV |
607 | int |
608 | drm_atomic_helper_check_planes(struct drm_device *dev, | |
609 | struct drm_atomic_state *state) | |
c2fcd274 | 610 | { |
df63b999 ACO |
611 | struct drm_crtc *crtc; |
612 | struct drm_crtc_state *crtc_state; | |
613 | struct drm_plane *plane; | |
614 | struct drm_plane_state *plane_state; | |
c2fcd274 DV |
615 | int i, ret = 0; |
616 | ||
df63b999 | 617 | for_each_plane_in_state(state, plane, plane_state, i) { |
b5ceff20 | 618 | const struct drm_plane_helper_funcs *funcs; |
c2fcd274 DV |
619 | |
620 | funcs = plane->helper_private; | |
621 | ||
622 | drm_atomic_helper_plane_changed(state, plane_state, plane); | |
623 | ||
624 | if (!funcs || !funcs->atomic_check) | |
625 | continue; | |
626 | ||
627 | ret = funcs->atomic_check(plane, plane_state); | |
628 | if (ret) { | |
9f4c97a2 VS |
629 | DRM_DEBUG_ATOMIC("[PLANE:%d:%s] atomic driver check failed\n", |
630 | plane->base.id, plane->name); | |
c2fcd274 DV |
631 | return ret; |
632 | } | |
633 | } | |
634 | ||
df63b999 | 635 | for_each_crtc_in_state(state, crtc, crtc_state, i) { |
b5ceff20 | 636 | const struct drm_crtc_helper_funcs *funcs; |
c2fcd274 DV |
637 | |
638 | funcs = crtc->helper_private; | |
639 | ||
640 | if (!funcs || !funcs->atomic_check) | |
641 | continue; | |
642 | ||
be9174a4 | 643 | ret = funcs->atomic_check(crtc, crtc_state); |
c2fcd274 | 644 | if (ret) { |
fa3ab4c2 VS |
645 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] atomic driver check failed\n", |
646 | crtc->base.id, crtc->name); | |
c2fcd274 DV |
647 | return ret; |
648 | } | |
649 | } | |
650 | ||
d9b13620 DV |
651 | return ret; |
652 | } | |
653 | EXPORT_SYMBOL(drm_atomic_helper_check_planes); | |
654 | ||
655 | /** | |
656 | * drm_atomic_helper_check - validate state object | |
657 | * @dev: DRM device | |
658 | * @state: the driver state object | |
659 | * | |
660 | * Check the state object to see if the requested state is physically possible. | |
661 | * Only crtcs and planes have check callbacks, so for any additional (global) | |
662 | * checking that a driver needs it can simply wrap that around this function. | |
6806cdf9 DV |
663 | * Drivers without such needs can directly use this as their |
664 | * &drm_mode_config_funcs.atomic_check callback. | |
d9b13620 | 665 | * |
b4274fbe DV |
666 | * This just wraps the two parts of the state checking for planes and modeset |
667 | * state in the default order: First it calls drm_atomic_helper_check_modeset() | |
668 | * and then drm_atomic_helper_check_planes(). The assumption is that the | |
6806cdf9 DV |
669 | * @drm_plane_helper_funcs.atomic_check and @drm_crtc_helper_funcs.atomic_check |
670 | * functions depend upon an updated adjusted_mode.clock to e.g. properly compute | |
671 | * watermarks. | |
b4274fbe | 672 | * |
c39032a8 | 673 | * RETURNS: |
d9b13620 DV |
674 | * Zero for success or -errno |
675 | */ | |
676 | int drm_atomic_helper_check(struct drm_device *dev, | |
677 | struct drm_atomic_state *state) | |
678 | { | |
679 | int ret; | |
680 | ||
b4274fbe | 681 | ret = drm_atomic_helper_check_modeset(dev, state); |
d9b13620 DV |
682 | if (ret) |
683 | return ret; | |
684 | ||
b4274fbe | 685 | ret = drm_atomic_helper_check_planes(dev, state); |
934ce1c2 RC |
686 | if (ret) |
687 | return ret; | |
688 | ||
c2fcd274 DV |
689 | return ret; |
690 | } | |
691 | EXPORT_SYMBOL(drm_atomic_helper_check); | |
692 | ||
623369e5 DV |
693 | static void |
694 | disable_outputs(struct drm_device *dev, struct drm_atomic_state *old_state) | |
695 | { | |
df63b999 ACO |
696 | struct drm_connector *connector; |
697 | struct drm_connector_state *old_conn_state; | |
698 | struct drm_crtc *crtc; | |
699 | struct drm_crtc_state *old_crtc_state; | |
623369e5 DV |
700 | int i; |
701 | ||
df63b999 | 702 | for_each_connector_in_state(old_state, connector, old_conn_state, i) { |
b5ceff20 | 703 | const struct drm_encoder_helper_funcs *funcs; |
623369e5 DV |
704 | struct drm_encoder *encoder; |
705 | ||
623369e5 DV |
706 | /* Shut down everything that's in the changeset and currently |
707 | * still on. So need to check the old, saved state. */ | |
df63b999 | 708 | if (!old_conn_state->crtc) |
623369e5 DV |
709 | continue; |
710 | ||
2943ef32 AH |
711 | old_crtc_state = drm_atomic_get_existing_crtc_state(old_state, |
712 | old_conn_state->crtc); | |
eab3bbef | 713 | |
4218a32f | 714 | if (!old_crtc_state->active || |
2465ff62 | 715 | !drm_atomic_crtc_needs_modeset(old_conn_state->crtc->state)) |
eab3bbef DV |
716 | continue; |
717 | ||
46df9adb | 718 | encoder = old_conn_state->best_encoder; |
623369e5 | 719 | |
46df9adb RC |
720 | /* We shouldn't get this far if we didn't previously have |
721 | * an encoder.. but WARN_ON() rather than explode. | |
722 | */ | |
723 | if (WARN_ON(!encoder)) | |
623369e5 DV |
724 | continue; |
725 | ||
726 | funcs = encoder->helper_private; | |
727 | ||
17a38d9c DV |
728 | DRM_DEBUG_ATOMIC("disabling [ENCODER:%d:%s]\n", |
729 | encoder->base.id, encoder->name); | |
95d6eb3b | 730 | |
623369e5 DV |
731 | /* |
732 | * Each encoder has at most one connector (since we always steal | |
f98bd3ef | 733 | * it away), so we won't call disable hooks twice. |
623369e5 | 734 | */ |
862e686c | 735 | drm_bridge_disable(encoder->bridge); |
623369e5 DV |
736 | |
737 | /* Right function depends upon target state. */ | |
2827635e NT |
738 | if (funcs) { |
739 | if (connector->state->crtc && funcs->prepare) | |
740 | funcs->prepare(encoder); | |
741 | else if (funcs->disable) | |
742 | funcs->disable(encoder); | |
743 | else if (funcs->dpms) | |
744 | funcs->dpms(encoder, DRM_MODE_DPMS_OFF); | |
745 | } | |
623369e5 | 746 | |
862e686c | 747 | drm_bridge_post_disable(encoder->bridge); |
623369e5 DV |
748 | } |
749 | ||
df63b999 | 750 | for_each_crtc_in_state(old_state, crtc, old_crtc_state, i) { |
b5ceff20 | 751 | const struct drm_crtc_helper_funcs *funcs; |
623369e5 DV |
752 | |
753 | /* Shut down everything that needs a full modeset. */ | |
2465ff62 | 754 | if (!drm_atomic_crtc_needs_modeset(crtc->state)) |
eab3bbef DV |
755 | continue; |
756 | ||
757 | if (!old_crtc_state->active) | |
623369e5 DV |
758 | continue; |
759 | ||
760 | funcs = crtc->helper_private; | |
761 | ||
fa3ab4c2 VS |
762 | DRM_DEBUG_ATOMIC("disabling [CRTC:%d:%s]\n", |
763 | crtc->base.id, crtc->name); | |
95d6eb3b DV |
764 | |
765 | ||
623369e5 | 766 | /* Right function depends upon target state. */ |
ee0a89cf | 767 | if (crtc->state->enable && funcs->prepare) |
623369e5 | 768 | funcs->prepare(crtc); |
c9ac8b4c LY |
769 | else if (funcs->atomic_disable) |
770 | funcs->atomic_disable(crtc, old_crtc_state); | |
623369e5 DV |
771 | else if (funcs->disable) |
772 | funcs->disable(crtc); | |
773 | else | |
774 | funcs->dpms(crtc, DRM_MODE_DPMS_OFF); | |
775 | } | |
776 | } | |
777 | ||
4c18d301 DV |
778 | /** |
779 | * drm_atomic_helper_update_legacy_modeset_state - update legacy modeset state | |
780 | * @dev: DRM device | |
781 | * @old_state: atomic state object with old state structures | |
782 | * | |
783 | * This function updates all the various legacy modeset state pointers in | |
784 | * connectors, encoders and crtcs. It also updates the timestamping constants | |
785 | * used for precise vblank timestamps by calling | |
786 | * drm_calc_timestamping_constants(). | |
787 | * | |
788 | * Drivers can use this for building their own atomic commit if they don't have | |
789 | * a pure helper-based modeset implementation. | |
790 | */ | |
791 | void | |
792 | drm_atomic_helper_update_legacy_modeset_state(struct drm_device *dev, | |
793 | struct drm_atomic_state *old_state) | |
623369e5 | 794 | { |
df63b999 ACO |
795 | struct drm_connector *connector; |
796 | struct drm_connector_state *old_conn_state; | |
797 | struct drm_crtc *crtc; | |
798 | struct drm_crtc_state *old_crtc_state; | |
623369e5 DV |
799 | int i; |
800 | ||
8c10342c | 801 | /* clear out existing links and update dpms */ |
df63b999 | 802 | for_each_connector_in_state(old_state, connector, old_conn_state, i) { |
8c10342c ML |
803 | if (connector->encoder) { |
804 | WARN_ON(!connector->encoder->crtc); | |
805 | ||
806 | connector->encoder->crtc = NULL; | |
807 | connector->encoder = NULL; | |
808 | } | |
623369e5 | 809 | |
8c10342c ML |
810 | crtc = connector->state->crtc; |
811 | if ((!crtc && old_conn_state->crtc) || | |
812 | (crtc && drm_atomic_crtc_needs_modeset(crtc->state))) { | |
813 | struct drm_property *dpms_prop = | |
814 | dev->mode_config.dpms_property; | |
815 | int mode = DRM_MODE_DPMS_OFF; | |
623369e5 | 816 | |
8c10342c ML |
817 | if (crtc && crtc->state->active) |
818 | mode = DRM_MODE_DPMS_ON; | |
819 | ||
820 | connector->dpms = mode; | |
821 | drm_object_property_set_value(&connector->base, | |
822 | dpms_prop, mode); | |
823 | } | |
623369e5 DV |
824 | } |
825 | ||
826 | /* set new links */ | |
df63b999 ACO |
827 | for_each_connector_in_state(old_state, connector, old_conn_state, i) { |
828 | if (!connector->state->crtc) | |
623369e5 DV |
829 | continue; |
830 | ||
831 | if (WARN_ON(!connector->state->best_encoder)) | |
832 | continue; | |
833 | ||
834 | connector->encoder = connector->state->best_encoder; | |
835 | connector->encoder->crtc = connector->state->crtc; | |
836 | } | |
837 | ||
838 | /* set legacy state in the crtc structure */ | |
df63b999 | 839 | for_each_crtc_in_state(old_state, crtc, old_crtc_state, i) { |
2660801f ML |
840 | struct drm_plane *primary = crtc->primary; |
841 | ||
623369e5 DV |
842 | crtc->mode = crtc->state->mode; |
843 | crtc->enabled = crtc->state->enable; | |
2660801f ML |
844 | |
845 | if (drm_atomic_get_existing_plane_state(old_state, primary) && | |
846 | primary->state->crtc == crtc) { | |
847 | crtc->x = primary->state->src_x >> 16; | |
848 | crtc->y = primary->state->src_y >> 16; | |
849 | } | |
3d51d2d2 DV |
850 | |
851 | if (crtc->state->enable) | |
852 | drm_calc_timestamping_constants(crtc, | |
853 | &crtc->state->adjusted_mode); | |
623369e5 DV |
854 | } |
855 | } | |
4c18d301 | 856 | EXPORT_SYMBOL(drm_atomic_helper_update_legacy_modeset_state); |
623369e5 DV |
857 | |
858 | static void | |
859 | crtc_set_mode(struct drm_device *dev, struct drm_atomic_state *old_state) | |
860 | { | |
df63b999 ACO |
861 | struct drm_crtc *crtc; |
862 | struct drm_crtc_state *old_crtc_state; | |
863 | struct drm_connector *connector; | |
864 | struct drm_connector_state *old_conn_state; | |
623369e5 DV |
865 | int i; |
866 | ||
df63b999 | 867 | for_each_crtc_in_state(old_state, crtc, old_crtc_state, i) { |
b5ceff20 | 868 | const struct drm_crtc_helper_funcs *funcs; |
623369e5 | 869 | |
df63b999 | 870 | if (!crtc->state->mode_changed) |
623369e5 DV |
871 | continue; |
872 | ||
873 | funcs = crtc->helper_private; | |
874 | ||
c982bd90 | 875 | if (crtc->state->enable && funcs->mode_set_nofb) { |
fa3ab4c2 VS |
876 | DRM_DEBUG_ATOMIC("modeset on [CRTC:%d:%s]\n", |
877 | crtc->base.id, crtc->name); | |
95d6eb3b | 878 | |
623369e5 | 879 | funcs->mode_set_nofb(crtc); |
95d6eb3b | 880 | } |
623369e5 DV |
881 | } |
882 | ||
df63b999 | 883 | for_each_connector_in_state(old_state, connector, old_conn_state, i) { |
b5ceff20 | 884 | const struct drm_encoder_helper_funcs *funcs; |
623369e5 | 885 | struct drm_crtc_state *new_crtc_state; |
623369e5 DV |
886 | struct drm_encoder *encoder; |
887 | struct drm_display_mode *mode, *adjusted_mode; | |
888 | ||
df63b999 | 889 | if (!connector->state->best_encoder) |
623369e5 DV |
890 | continue; |
891 | ||
892 | encoder = connector->state->best_encoder; | |
893 | funcs = encoder->helper_private; | |
894 | new_crtc_state = connector->state->crtc->state; | |
895 | mode = &new_crtc_state->mode; | |
896 | adjusted_mode = &new_crtc_state->adjusted_mode; | |
897 | ||
eab3bbef DV |
898 | if (!new_crtc_state->mode_changed) |
899 | continue; | |
900 | ||
17a38d9c DV |
901 | DRM_DEBUG_ATOMIC("modeset on [ENCODER:%d:%s]\n", |
902 | encoder->base.id, encoder->name); | |
95d6eb3b | 903 | |
623369e5 DV |
904 | /* |
905 | * Each encoder has at most one connector (since we always steal | |
f98bd3ef | 906 | * it away), so we won't call mode_set hooks twice. |
623369e5 | 907 | */ |
fe4a11c9 PZ |
908 | if (funcs && funcs->atomic_mode_set) { |
909 | funcs->atomic_mode_set(encoder, new_crtc_state, | |
910 | connector->state); | |
911 | } else if (funcs && funcs->mode_set) { | |
c982bd90 | 912 | funcs->mode_set(encoder, mode, adjusted_mode); |
fe4a11c9 | 913 | } |
623369e5 | 914 | |
862e686c | 915 | drm_bridge_mode_set(encoder->bridge, mode, adjusted_mode); |
623369e5 DV |
916 | } |
917 | } | |
918 | ||
919 | /** | |
1af434a9 | 920 | * drm_atomic_helper_commit_modeset_disables - modeset commit to disable outputs |
623369e5 | 921 | * @dev: DRM device |
a072f809 | 922 | * @old_state: atomic state object with old state structures |
623369e5 | 923 | * |
1af434a9 | 924 | * This function shuts down all the outputs that need to be shut down and |
623369e5 | 925 | * prepares them (if required) with the new mode. |
1af434a9 | 926 | * |
60acc4eb | 927 | * For compatibility with legacy crtc helpers this should be called before |
1af434a9 DV |
928 | * drm_atomic_helper_commit_planes(), which is what the default commit function |
929 | * does. But drivers with different needs can group the modeset commits together | |
930 | * and do the plane commits at the end. This is useful for drivers doing runtime | |
931 | * PM since planes updates then only happen when the CRTC is actually enabled. | |
623369e5 | 932 | */ |
1af434a9 DV |
933 | void drm_atomic_helper_commit_modeset_disables(struct drm_device *dev, |
934 | struct drm_atomic_state *old_state) | |
623369e5 | 935 | { |
a072f809 | 936 | disable_outputs(dev, old_state); |
4c18d301 DV |
937 | |
938 | drm_atomic_helper_update_legacy_modeset_state(dev, old_state); | |
939 | ||
a072f809 | 940 | crtc_set_mode(dev, old_state); |
623369e5 | 941 | } |
1af434a9 | 942 | EXPORT_SYMBOL(drm_atomic_helper_commit_modeset_disables); |
623369e5 DV |
943 | |
944 | /** | |
1af434a9 | 945 | * drm_atomic_helper_commit_modeset_enables - modeset commit to enable outputs |
623369e5 DV |
946 | * @dev: DRM device |
947 | * @old_state: atomic state object with old state structures | |
948 | * | |
1af434a9 DV |
949 | * This function enables all the outputs with the new configuration which had to |
950 | * be turned off for the update. | |
951 | * | |
60acc4eb | 952 | * For compatibility with legacy crtc helpers this should be called after |
1af434a9 DV |
953 | * drm_atomic_helper_commit_planes(), which is what the default commit function |
954 | * does. But drivers with different needs can group the modeset commits together | |
955 | * and do the plane commits at the end. This is useful for drivers doing runtime | |
956 | * PM since planes updates then only happen when the CRTC is actually enabled. | |
623369e5 | 957 | */ |
1af434a9 DV |
958 | void drm_atomic_helper_commit_modeset_enables(struct drm_device *dev, |
959 | struct drm_atomic_state *old_state) | |
623369e5 | 960 | { |
df63b999 ACO |
961 | struct drm_crtc *crtc; |
962 | struct drm_crtc_state *old_crtc_state; | |
963 | struct drm_connector *connector; | |
964 | struct drm_connector_state *old_conn_state; | |
623369e5 DV |
965 | int i; |
966 | ||
df63b999 | 967 | for_each_crtc_in_state(old_state, crtc, old_crtc_state, i) { |
b5ceff20 | 968 | const struct drm_crtc_helper_funcs *funcs; |
623369e5 DV |
969 | |
970 | /* Need to filter out CRTCs where only planes change. */ | |
2465ff62 | 971 | if (!drm_atomic_crtc_needs_modeset(crtc->state)) |
eab3bbef DV |
972 | continue; |
973 | ||
974 | if (!crtc->state->active) | |
623369e5 DV |
975 | continue; |
976 | ||
977 | funcs = crtc->helper_private; | |
978 | ||
ee0a89cf | 979 | if (crtc->state->enable) { |
fa3ab4c2 VS |
980 | DRM_DEBUG_ATOMIC("enabling [CRTC:%d:%s]\n", |
981 | crtc->base.id, crtc->name); | |
95d6eb3b | 982 | |
ee0a89cf DV |
983 | if (funcs->enable) |
984 | funcs->enable(crtc); | |
985 | else | |
986 | funcs->commit(crtc); | |
987 | } | |
623369e5 DV |
988 | } |
989 | ||
df63b999 | 990 | for_each_connector_in_state(old_state, connector, old_conn_state, i) { |
b5ceff20 | 991 | const struct drm_encoder_helper_funcs *funcs; |
623369e5 DV |
992 | struct drm_encoder *encoder; |
993 | ||
df63b999 | 994 | if (!connector->state->best_encoder) |
623369e5 DV |
995 | continue; |
996 | ||
4218a32f | 997 | if (!connector->state->crtc->state->active || |
2465ff62 | 998 | !drm_atomic_crtc_needs_modeset(connector->state->crtc->state)) |
eab3bbef DV |
999 | continue; |
1000 | ||
623369e5 DV |
1001 | encoder = connector->state->best_encoder; |
1002 | funcs = encoder->helper_private; | |
1003 | ||
17a38d9c DV |
1004 | DRM_DEBUG_ATOMIC("enabling [ENCODER:%d:%s]\n", |
1005 | encoder->base.id, encoder->name); | |
95d6eb3b | 1006 | |
623369e5 DV |
1007 | /* |
1008 | * Each encoder has at most one connector (since we always steal | |
f98bd3ef | 1009 | * it away), so we won't call enable hooks twice. |
623369e5 | 1010 | */ |
862e686c | 1011 | drm_bridge_pre_enable(encoder->bridge); |
623369e5 | 1012 | |
2827635e NT |
1013 | if (funcs) { |
1014 | if (funcs->enable) | |
1015 | funcs->enable(encoder); | |
1016 | else if (funcs->commit) | |
1017 | funcs->commit(encoder); | |
1018 | } | |
623369e5 | 1019 | |
862e686c | 1020 | drm_bridge_enable(encoder->bridge); |
623369e5 DV |
1021 | } |
1022 | } | |
1af434a9 | 1023 | EXPORT_SYMBOL(drm_atomic_helper_commit_modeset_enables); |
623369e5 | 1024 | |
4c5b7f3a RC |
1025 | /** |
1026 | * drm_atomic_helper_wait_for_fences - wait for fences stashed in plane state | |
1027 | * @dev: DRM device | |
1028 | * @state: atomic state object with old state structures | |
1ea0c02e DV |
1029 | * @pre_swap: If true, do an interruptible wait, and @state is the new state. |
1030 | * Otherwise @state is the old state. | |
4c5b7f3a RC |
1031 | * |
1032 | * For implicit sync, driver should fish the exclusive fence out from the | |
1033 | * incoming fb's and stash it in the drm_plane_state. This is called after | |
1034 | * drm_atomic_helper_swap_state() so it uses the current plane state (and | |
1035 | * just uses the atomic state to find the changed planes) | |
f6ce410a | 1036 | * |
1ea0c02e DV |
1037 | * Note that @pre_swap is needed since the point where we block for fences moves |
1038 | * around depending upon whether an atomic commit is blocking or | |
1039 | * non-blocking. For async commit all waiting needs to happen after | |
1040 | * drm_atomic_helper_swap_state() is called, but for synchronous commits we want | |
1041 | * to wait **before** we do anything that can't be easily rolled back. That is | |
1042 | * before we call drm_atomic_helper_swap_state(). | |
1043 | * | |
f54d1867 | 1044 | * Returns zero if success or < 0 if dma_fence_wait() fails. |
4c5b7f3a | 1045 | */ |
f6ce410a GP |
1046 | int drm_atomic_helper_wait_for_fences(struct drm_device *dev, |
1047 | struct drm_atomic_state *state, | |
1048 | bool pre_swap) | |
e2330f07 | 1049 | { |
df63b999 ACO |
1050 | struct drm_plane *plane; |
1051 | struct drm_plane_state *plane_state; | |
f6ce410a | 1052 | int i, ret; |
e2330f07 | 1053 | |
df63b999 | 1054 | for_each_plane_in_state(state, plane, plane_state, i) { |
f6ce410a GP |
1055 | if (!pre_swap) |
1056 | plane_state = plane->state; | |
1057 | ||
1058 | if (!plane_state->fence) | |
e2330f07 DV |
1059 | continue; |
1060 | ||
f6ce410a GP |
1061 | WARN_ON(!plane_state->fb); |
1062 | ||
1063 | /* | |
1064 | * If waiting for fences pre-swap (ie: nonblock), userspace can | |
1065 | * still interrupt the operation. Instead of blocking until the | |
1066 | * timer expires, make the wait interruptible. | |
1067 | */ | |
f54d1867 | 1068 | ret = dma_fence_wait(plane_state->fence, pre_swap); |
f6ce410a GP |
1069 | if (ret) |
1070 | return ret; | |
e2330f07 | 1071 | |
f54d1867 | 1072 | dma_fence_put(plane_state->fence); |
f6ce410a | 1073 | plane_state->fence = NULL; |
e2330f07 | 1074 | } |
f6ce410a GP |
1075 | |
1076 | return 0; | |
e2330f07 | 1077 | } |
4c5b7f3a | 1078 | EXPORT_SYMBOL(drm_atomic_helper_wait_for_fences); |
e2330f07 | 1079 | |
5ee3229c RC |
1080 | /** |
1081 | * drm_atomic_helper_wait_for_vblanks - wait for vblank on crtcs | |
1082 | * @dev: DRM device | |
1083 | * @old_state: atomic state object with old state structures | |
1084 | * | |
1085 | * Helper to, after atomic commit, wait for vblanks on all effected | |
1086 | * crtcs (ie. before cleaning up old framebuffers using | |
ab58e338 DV |
1087 | * drm_atomic_helper_cleanup_planes()). It will only wait on crtcs where the |
1088 | * framebuffers have actually changed to optimize for the legacy cursor and | |
1089 | * plane update use-case. | |
5ee3229c RC |
1090 | */ |
1091 | void | |
1092 | drm_atomic_helper_wait_for_vblanks(struct drm_device *dev, | |
1093 | struct drm_atomic_state *old_state) | |
623369e5 DV |
1094 | { |
1095 | struct drm_crtc *crtc; | |
1096 | struct drm_crtc_state *old_crtc_state; | |
623369e5 | 1097 | int i, ret; |
bdc57146 | 1098 | unsigned crtc_mask = 0; |
623369e5 | 1099 | |
bdc57146 ML |
1100 | /* |
1101 | * Legacy cursor ioctls are completely unsynced, and userspace | |
1102 | * relies on that (by doing tons of cursor updates). | |
1103 | */ | |
1104 | if (old_state->legacy_cursor_update) | |
1105 | return; | |
623369e5 | 1106 | |
bdc57146 ML |
1107 | for_each_crtc_in_state(old_state, crtc, old_crtc_state, i) { |
1108 | struct drm_crtc_state *new_crtc_state = crtc->state; | |
623369e5 | 1109 | |
a3fbb53f | 1110 | if (!new_crtc_state->active || !new_crtc_state->planes_changed) |
ab58e338 DV |
1111 | continue; |
1112 | ||
623369e5 DV |
1113 | ret = drm_crtc_vblank_get(crtc); |
1114 | if (ret != 0) | |
1115 | continue; | |
1116 | ||
bdc57146 ML |
1117 | crtc_mask |= drm_crtc_mask(crtc); |
1118 | old_state->crtcs[i].last_vblank_count = drm_crtc_vblank_count(crtc); | |
623369e5 DV |
1119 | } |
1120 | ||
df63b999 | 1121 | for_each_crtc_in_state(old_state, crtc, old_crtc_state, i) { |
bdc57146 | 1122 | if (!(crtc_mask & drm_crtc_mask(crtc))) |
623369e5 DV |
1123 | continue; |
1124 | ||
1125 | ret = wait_event_timeout(dev->vblank[i].queue, | |
bdc57146 | 1126 | old_state->crtcs[i].last_vblank_count != |
d4853630 | 1127 | drm_crtc_vblank_count(crtc), |
623369e5 DV |
1128 | msecs_to_jiffies(50)); |
1129 | ||
6ac7c548 RK |
1130 | WARN(!ret, "[CRTC:%d:%s] vblank wait timed out\n", |
1131 | crtc->base.id, crtc->name); | |
8d4d0d70 | 1132 | |
623369e5 DV |
1133 | drm_crtc_vblank_put(crtc); |
1134 | } | |
1135 | } | |
5ee3229c | 1136 | EXPORT_SYMBOL(drm_atomic_helper_wait_for_vblanks); |
623369e5 DV |
1137 | |
1138 | /** | |
9f2a7950 | 1139 | * drm_atomic_helper_commit_tail - commit atomic update to hardware |
1ea0c02e | 1140 | * @old_state: atomic state object with old state structures |
623369e5 | 1141 | * |
6806cdf9 DV |
1142 | * This is the default implementation for the |
1143 | * &drm_mode_config_helper_funcs.atomic_commit_tail hook. | |
623369e5 | 1144 | * |
9f2a7950 DV |
1145 | * Note that the default ordering of how the various stages are called is to |
1146 | * match the legacy modeset helper library closest. One peculiarity of that is | |
1147 | * that it doesn't mesh well with runtime PM at all. | |
6e48ae32 | 1148 | * |
9f2a7950 | 1149 | * For drivers supporting runtime PM the recommended sequence is instead :: |
6e48ae32 | 1150 | * |
1ea0c02e | 1151 | * drm_atomic_helper_commit_modeset_disables(dev, old_state); |
6e48ae32 | 1152 | * |
1ea0c02e | 1153 | * drm_atomic_helper_commit_modeset_enables(dev, old_state); |
6e48ae32 | 1154 | * |
1ea0c02e | 1155 | * drm_atomic_helper_commit_planes(dev, old_state, |
2b58e98d | 1156 | * DRM_PLANE_COMMIT_ACTIVE_ONLY); |
6e48ae32 | 1157 | * |
9f2a7950 DV |
1158 | * for committing the atomic update to hardware. See the kerneldoc entries for |
1159 | * these three functions for more details. | |
1160 | */ | |
1ea0c02e | 1161 | void drm_atomic_helper_commit_tail(struct drm_atomic_state *old_state) |
9f2a7950 | 1162 | { |
1ea0c02e | 1163 | struct drm_device *dev = old_state->dev; |
9f2a7950 | 1164 | |
1ea0c02e | 1165 | drm_atomic_helper_commit_modeset_disables(dev, old_state); |
9f2a7950 | 1166 | |
1ea0c02e | 1167 | drm_atomic_helper_commit_planes(dev, old_state, 0); |
9f2a7950 | 1168 | |
1ea0c02e | 1169 | drm_atomic_helper_commit_modeset_enables(dev, old_state); |
9f2a7950 | 1170 | |
1ea0c02e | 1171 | drm_atomic_helper_commit_hw_done(old_state); |
9f2a7950 | 1172 | |
1ea0c02e | 1173 | drm_atomic_helper_wait_for_vblanks(dev, old_state); |
9f2a7950 | 1174 | |
1ea0c02e | 1175 | drm_atomic_helper_cleanup_planes(dev, old_state); |
9f2a7950 DV |
1176 | } |
1177 | EXPORT_SYMBOL(drm_atomic_helper_commit_tail); | |
1178 | ||
1ea0c02e | 1179 | static void commit_tail(struct drm_atomic_state *old_state) |
9f2a7950 | 1180 | { |
1ea0c02e | 1181 | struct drm_device *dev = old_state->dev; |
a4b10cce | 1182 | const struct drm_mode_config_helper_funcs *funcs; |
9f2a7950 DV |
1183 | |
1184 | funcs = dev->mode_config.helper_private; | |
1185 | ||
1ea0c02e | 1186 | drm_atomic_helper_wait_for_fences(dev, old_state, false); |
9f2a7950 | 1187 | |
1ea0c02e | 1188 | drm_atomic_helper_wait_for_dependencies(old_state); |
9f2a7950 DV |
1189 | |
1190 | if (funcs && funcs->atomic_commit_tail) | |
1ea0c02e | 1191 | funcs->atomic_commit_tail(old_state); |
9f2a7950 | 1192 | else |
1ea0c02e | 1193 | drm_atomic_helper_commit_tail(old_state); |
9f2a7950 | 1194 | |
1ea0c02e | 1195 | drm_atomic_helper_commit_cleanup_done(old_state); |
9f2a7950 | 1196 | |
1ea0c02e | 1197 | drm_atomic_state_put(old_state); |
9f2a7950 DV |
1198 | } |
1199 | ||
1200 | static void commit_work(struct work_struct *work) | |
1201 | { | |
1202 | struct drm_atomic_state *state = container_of(work, | |
1203 | struct drm_atomic_state, | |
1204 | commit_work); | |
1205 | commit_tail(state); | |
1206 | } | |
1207 | ||
1208 | /** | |
1209 | * drm_atomic_helper_commit - commit validated state object | |
1210 | * @dev: DRM device | |
1211 | * @state: the driver state object | |
1212 | * @nonblock: whether nonblocking behavior is requested. | |
1213 | * | |
1214 | * This function commits a with drm_atomic_helper_check() pre-validated state | |
1215 | * object. This can still fail when e.g. the framebuffer reservation fails. This | |
1216 | * function implements nonblocking commits, using | |
1217 | * drm_atomic_helper_setup_commit() and related functions. | |
1218 | * | |
9f2a7950 | 1219 | * Committing the actual hardware state is done through the |
6806cdf9 DV |
1220 | * &drm_mode_config_helper_funcs.atomic_commit_tail callback, or it's default |
1221 | * implementation drm_atomic_helper_commit_tail(). | |
6e48ae32 | 1222 | * |
c39032a8 | 1223 | * RETURNS: |
623369e5 DV |
1224 | * Zero for success or -errno. |
1225 | */ | |
1226 | int drm_atomic_helper_commit(struct drm_device *dev, | |
1227 | struct drm_atomic_state *state, | |
286dbb8d | 1228 | bool nonblock) |
623369e5 DV |
1229 | { |
1230 | int ret; | |
1231 | ||
a095caa7 DV |
1232 | ret = drm_atomic_helper_setup_commit(state, nonblock); |
1233 | if (ret) | |
1234 | return ret; | |
1235 | ||
9f2a7950 DV |
1236 | INIT_WORK(&state->commit_work, commit_work); |
1237 | ||
623369e5 DV |
1238 | ret = drm_atomic_helper_prepare_planes(dev, state); |
1239 | if (ret) | |
1240 | return ret; | |
1241 | ||
f6ce410a GP |
1242 | if (!nonblock) { |
1243 | ret = drm_atomic_helper_wait_for_fences(dev, state, true); | |
aebe55c2 LP |
1244 | if (ret) { |
1245 | drm_atomic_helper_cleanup_planes(dev, state); | |
f6ce410a | 1246 | return ret; |
aebe55c2 | 1247 | } |
f6ce410a GP |
1248 | } |
1249 | ||
623369e5 DV |
1250 | /* |
1251 | * This is the point of no return - everything below never fails except | |
1252 | * when the hw goes bonghits. Which means we can commit the new state on | |
1253 | * the software side now. | |
1254 | */ | |
1255 | ||
5e84c269 | 1256 | drm_atomic_helper_swap_state(state, true); |
623369e5 DV |
1257 | |
1258 | /* | |
1259 | * Everything below can be run asynchronously without the need to grab | |
f98bd3ef | 1260 | * any modeset locks at all under one condition: It must be guaranteed |
623369e5 DV |
1261 | * that the asynchronous work has either been cancelled (if the driver |
1262 | * supports it, which at least requires that the framebuffers get | |
1263 | * cleaned up with drm_atomic_helper_cleanup_planes()) or completed | |
1264 | * before the new state gets committed on the software side with | |
1265 | * drm_atomic_helper_swap_state(). | |
1266 | * | |
1267 | * This scheme allows new atomic state updates to be prepared and | |
1268 | * checked in parallel to the asynchronous completion of the previous | |
1269 | * update. Which is important since compositors need to figure out the | |
1270 | * composition of the next frame right after having submitted the | |
1271 | * current layout. | |
9f2a7950 DV |
1272 | * |
1273 | * NOTE: Commit work has multiple phases, first hardware commit, then | |
1274 | * cleanup. We want them to overlap, hence need system_unbound_wq to | |
1275 | * make sure work items don't artifically stall on each another. | |
623369e5 DV |
1276 | */ |
1277 | ||
0853695c | 1278 | drm_atomic_state_get(state); |
9f2a7950 DV |
1279 | if (nonblock) |
1280 | queue_work(system_unbound_wq, &state->commit_work); | |
1281 | else | |
1282 | commit_tail(state); | |
623369e5 DV |
1283 | |
1284 | return 0; | |
1285 | } | |
1286 | EXPORT_SYMBOL(drm_atomic_helper_commit); | |
1287 | ||
e8c833a7 | 1288 | /** |
286dbb8d | 1289 | * DOC: implementing nonblocking commit |
e8c833a7 | 1290 | * |
9f2a7950 | 1291 | * Nonblocking atomic commits have to be implemented in the following sequence: |
e8c833a7 DV |
1292 | * |
1293 | * 1. Run drm_atomic_helper_prepare_planes() first. This is the only function | |
1294 | * which commit needs to call which can fail, so we want to run it first and | |
1295 | * synchronously. | |
1296 | * | |
286dbb8d | 1297 | * 2. Synchronize with any outstanding nonblocking commit worker threads which |
e8c833a7 DV |
1298 | * might be affected the new state update. This can be done by either cancelling |
1299 | * or flushing the work items, depending upon whether the driver can deal with | |
1300 | * cancelled updates. Note that it is important to ensure that the framebuffer | |
1301 | * cleanup is still done when cancelling. | |
1302 | * | |
9f2a7950 DV |
1303 | * Asynchronous workers need to have sufficient parallelism to be able to run |
1304 | * different atomic commits on different CRTCs in parallel. The simplest way to | |
1305 | * achive this is by running them on the &system_unbound_wq work queue. Note | |
1306 | * that drivers are not required to split up atomic commits and run an | |
1307 | * individual commit in parallel - userspace is supposed to do that if it cares. | |
1308 | * But it might be beneficial to do that for modesets, since those necessarily | |
1309 | * must be done as one global operation, and enabling or disabling a CRTC can | |
1310 | * take a long time. But even that is not required. | |
e8c833a7 DV |
1311 | * |
1312 | * 3. The software state is updated synchronously with | |
26196f7e | 1313 | * drm_atomic_helper_swap_state(). Doing this under the protection of all modeset |
e8c833a7 | 1314 | * locks means concurrent callers never see inconsistent state. And doing this |
286dbb8d ML |
1315 | * while it's guaranteed that no relevant nonblocking worker runs means that |
1316 | * nonblocking workers do not need grab any locks. Actually they must not grab | |
1317 | * locks, for otherwise the work flushing will deadlock. | |
e8c833a7 DV |
1318 | * |
1319 | * 4. Schedule a work item to do all subsequent steps, using the split-out | |
1320 | * commit helpers: a) pre-plane commit b) plane commit c) post-plane commit and | |
1321 | * then cleaning up the framebuffers after the old framebuffer is no longer | |
1322 | * being displayed. | |
9f2a7950 DV |
1323 | * |
1324 | * The above scheme is implemented in the atomic helper libraries in | |
1325 | * drm_atomic_helper_commit() using a bunch of helper functions. See | |
1326 | * drm_atomic_helper_setup_commit() for a starting point. | |
e8c833a7 DV |
1327 | */ |
1328 | ||
a095caa7 DV |
1329 | static int stall_checks(struct drm_crtc *crtc, bool nonblock) |
1330 | { | |
1331 | struct drm_crtc_commit *commit, *stall_commit = NULL; | |
1332 | bool completed = true; | |
1333 | int i; | |
1334 | long ret = 0; | |
1335 | ||
1336 | spin_lock(&crtc->commit_lock); | |
1337 | i = 0; | |
1338 | list_for_each_entry(commit, &crtc->commit_list, commit_entry) { | |
1339 | if (i == 0) { | |
1340 | completed = try_wait_for_completion(&commit->flip_done); | |
1341 | /* Userspace is not allowed to get ahead of the previous | |
1342 | * commit with nonblocking ones. */ | |
1343 | if (!completed && nonblock) { | |
1344 | spin_unlock(&crtc->commit_lock); | |
1345 | return -EBUSY; | |
1346 | } | |
1347 | } else if (i == 1) { | |
1348 | stall_commit = commit; | |
1349 | drm_crtc_commit_get(stall_commit); | |
a095caa7 | 1350 | break; |
723c3e55 | 1351 | } |
a095caa7 DV |
1352 | |
1353 | i++; | |
1354 | } | |
1355 | spin_unlock(&crtc->commit_lock); | |
1356 | ||
1357 | if (!stall_commit) | |
1358 | return 0; | |
1359 | ||
1360 | /* We don't want to let commits get ahead of cleanup work too much, | |
1361 | * stalling on 2nd previous commit means triple-buffer won't ever stall. | |
1362 | */ | |
723c3e55 | 1363 | ret = wait_for_completion_interruptible_timeout(&stall_commit->cleanup_done, |
a095caa7 DV |
1364 | 10*HZ); |
1365 | if (ret == 0) | |
1366 | DRM_ERROR("[CRTC:%d:%s] cleanup_done timed out\n", | |
1367 | crtc->base.id, crtc->name); | |
1368 | ||
1369 | drm_crtc_commit_put(stall_commit); | |
1370 | ||
1371 | return ret < 0 ? ret : 0; | |
1372 | } | |
1373 | ||
899cc5f1 | 1374 | static void release_crtc_commit(struct completion *completion) |
24835e44 DV |
1375 | { |
1376 | struct drm_crtc_commit *commit = container_of(completion, | |
1377 | typeof(*commit), | |
1378 | flip_done); | |
1379 | ||
1380 | drm_crtc_commit_put(commit); | |
1381 | } | |
1382 | ||
a095caa7 DV |
1383 | /** |
1384 | * drm_atomic_helper_setup_commit - setup possibly nonblocking commit | |
1385 | * @state: new modeset state to be committed | |
1386 | * @nonblock: whether nonblocking behavior is requested. | |
1387 | * | |
1388 | * This function prepares @state to be used by the atomic helper's support for | |
1389 | * nonblocking commits. Drivers using the nonblocking commit infrastructure | |
6806cdf9 DV |
1390 | * should always call this function from their |
1391 | * &drm_mode_config_funcs.atomic_commit hook. | |
a095caa7 DV |
1392 | * |
1393 | * To be able to use this support drivers need to use a few more helper | |
1394 | * functions. drm_atomic_helper_wait_for_dependencies() must be called before | |
1395 | * actually committing the hardware state, and for nonblocking commits this call | |
1396 | * must be placed in the async worker. See also drm_atomic_helper_swap_state() | |
1397 | * and it's stall parameter, for when a driver's commit hooks look at the | |
6806cdf9 | 1398 | * &drm_crtc.state, &drm_plane.state or &drm_connector.state pointer directly. |
a095caa7 DV |
1399 | * |
1400 | * Completion of the hardware commit step must be signalled using | |
1401 | * drm_atomic_helper_commit_hw_done(). After this step the driver is not allowed | |
1402 | * to read or change any permanent software or hardware modeset state. The only | |
1403 | * exception is state protected by other means than &drm_modeset_lock locks. | |
1404 | * Only the free standing @state with pointers to the old state structures can | |
1405 | * be inspected, e.g. to clean up old buffers using | |
1406 | * drm_atomic_helper_cleanup_planes(). | |
1407 | * | |
1408 | * At the very end, before cleaning up @state drivers must call | |
1409 | * drm_atomic_helper_commit_cleanup_done(). | |
1410 | * | |
1411 | * This is all implemented by in drm_atomic_helper_commit(), giving drivers a | |
1412 | * complete and esay-to-use default implementation of the atomic_commit() hook. | |
1413 | * | |
1414 | * The tracking of asynchronously executed and still pending commits is done | |
1415 | * using the core structure &drm_crtc_commit. | |
1416 | * | |
1417 | * By default there's no need to clean up resources allocated by this function | |
1418 | * explicitly: drm_atomic_state_default_clear() will take care of that | |
1419 | * automatically. | |
1420 | * | |
1421 | * Returns: | |
1422 | * | |
1423 | * 0 on success. -EBUSY when userspace schedules nonblocking commits too fast, | |
1424 | * -ENOMEM on allocation failures and -EINTR when a signal is pending. | |
1425 | */ | |
1426 | int drm_atomic_helper_setup_commit(struct drm_atomic_state *state, | |
1427 | bool nonblock) | |
1428 | { | |
1429 | struct drm_crtc *crtc; | |
1430 | struct drm_crtc_state *crtc_state; | |
1431 | struct drm_crtc_commit *commit; | |
1432 | int i, ret; | |
1433 | ||
1434 | for_each_crtc_in_state(state, crtc, crtc_state, i) { | |
1435 | commit = kzalloc(sizeof(*commit), GFP_KERNEL); | |
1436 | if (!commit) | |
1437 | return -ENOMEM; | |
1438 | ||
1439 | init_completion(&commit->flip_done); | |
1440 | init_completion(&commit->hw_done); | |
1441 | init_completion(&commit->cleanup_done); | |
1442 | INIT_LIST_HEAD(&commit->commit_entry); | |
1443 | kref_init(&commit->ref); | |
1444 | commit->crtc = crtc; | |
1445 | ||
1446 | state->crtcs[i].commit = commit; | |
1447 | ||
1448 | ret = stall_checks(crtc, nonblock); | |
1449 | if (ret) | |
1450 | return ret; | |
1451 | ||
1452 | /* Drivers only send out events when at least either current or | |
1453 | * new CRTC state is active. Complete right away if everything | |
1454 | * stays off. */ | |
1455 | if (!crtc->state->active && !crtc_state->active) { | |
1456 | complete_all(&commit->flip_done); | |
1457 | continue; | |
1458 | } | |
1459 | ||
1460 | /* Legacy cursor updates are fully unsynced. */ | |
1461 | if (state->legacy_cursor_update) { | |
1462 | complete_all(&commit->flip_done); | |
1463 | continue; | |
1464 | } | |
1465 | ||
1466 | if (!crtc_state->event) { | |
1467 | commit->event = kzalloc(sizeof(*commit->event), | |
1468 | GFP_KERNEL); | |
1469 | if (!commit->event) | |
1470 | return -ENOMEM; | |
1471 | ||
1472 | crtc_state->event = commit->event; | |
1473 | } | |
1474 | ||
1475 | crtc_state->event->base.completion = &commit->flip_done; | |
24835e44 DV |
1476 | crtc_state->event->base.completion_release = release_crtc_commit; |
1477 | drm_crtc_commit_get(commit); | |
a095caa7 DV |
1478 | } |
1479 | ||
1480 | return 0; | |
1481 | } | |
1482 | EXPORT_SYMBOL(drm_atomic_helper_setup_commit); | |
1483 | ||
1484 | ||
1485 | static struct drm_crtc_commit *preceeding_commit(struct drm_crtc *crtc) | |
1486 | { | |
1487 | struct drm_crtc_commit *commit; | |
1488 | int i = 0; | |
1489 | ||
1490 | list_for_each_entry(commit, &crtc->commit_list, commit_entry) { | |
1491 | /* skip the first entry, that's the current commit */ | |
1492 | if (i == 1) | |
1493 | return commit; | |
1494 | i++; | |
1495 | } | |
1496 | ||
1497 | return NULL; | |
1498 | } | |
1499 | ||
1500 | /** | |
1501 | * drm_atomic_helper_wait_for_dependencies - wait for required preceeding commits | |
1ea0c02e | 1502 | * @old_state: atomic state object with old state structures |
a095caa7 DV |
1503 | * |
1504 | * This function waits for all preceeding commits that touch the same CRTC as | |
1ea0c02e | 1505 | * @old_state to both be committed to the hardware (as signalled by |
a095caa7 | 1506 | * drm_atomic_helper_commit_hw_done) and executed by the hardware (as signalled |
6806cdf9 | 1507 | * by calling drm_crtc_vblank_send_event() on the &drm_crtc_state.event). |
a095caa7 DV |
1508 | * |
1509 | * This is part of the atomic helper support for nonblocking commits, see | |
1510 | * drm_atomic_helper_setup_commit() for an overview. | |
1511 | */ | |
1ea0c02e | 1512 | void drm_atomic_helper_wait_for_dependencies(struct drm_atomic_state *old_state) |
a095caa7 DV |
1513 | { |
1514 | struct drm_crtc *crtc; | |
1515 | struct drm_crtc_state *crtc_state; | |
1516 | struct drm_crtc_commit *commit; | |
1517 | int i; | |
1518 | long ret; | |
1519 | ||
1ea0c02e | 1520 | for_each_crtc_in_state(old_state, crtc, crtc_state, i) { |
a095caa7 DV |
1521 | spin_lock(&crtc->commit_lock); |
1522 | commit = preceeding_commit(crtc); | |
1523 | if (commit) | |
1524 | drm_crtc_commit_get(commit); | |
1525 | spin_unlock(&crtc->commit_lock); | |
1526 | ||
1527 | if (!commit) | |
1528 | continue; | |
1529 | ||
1530 | ret = wait_for_completion_timeout(&commit->hw_done, | |
1531 | 10*HZ); | |
1532 | if (ret == 0) | |
1533 | DRM_ERROR("[CRTC:%d:%s] hw_done timed out\n", | |
1534 | crtc->base.id, crtc->name); | |
1535 | ||
1536 | /* Currently no support for overwriting flips, hence | |
1537 | * stall for previous one to execute completely. */ | |
1538 | ret = wait_for_completion_timeout(&commit->flip_done, | |
1539 | 10*HZ); | |
1540 | if (ret == 0) | |
1541 | DRM_ERROR("[CRTC:%d:%s] flip_done timed out\n", | |
1542 | crtc->base.id, crtc->name); | |
1543 | ||
1544 | drm_crtc_commit_put(commit); | |
1545 | } | |
1546 | } | |
1547 | EXPORT_SYMBOL(drm_atomic_helper_wait_for_dependencies); | |
1548 | ||
1549 | /** | |
1550 | * drm_atomic_helper_commit_hw_done - setup possible nonblocking commit | |
1ea0c02e | 1551 | * @old_state: atomic state object with old state structures |
a095caa7 DV |
1552 | * |
1553 | * This function is used to signal completion of the hardware commit step. After | |
1554 | * this step the driver is not allowed to read or change any permanent software | |
1555 | * or hardware modeset state. The only exception is state protected by other | |
1556 | * means than &drm_modeset_lock locks. | |
1557 | * | |
1558 | * Drivers should try to postpone any expensive or delayed cleanup work after | |
1559 | * this function is called. | |
1560 | * | |
1561 | * This is part of the atomic helper support for nonblocking commits, see | |
1562 | * drm_atomic_helper_setup_commit() for an overview. | |
1563 | */ | |
1ea0c02e | 1564 | void drm_atomic_helper_commit_hw_done(struct drm_atomic_state *old_state) |
a095caa7 DV |
1565 | { |
1566 | struct drm_crtc *crtc; | |
1567 | struct drm_crtc_state *crtc_state; | |
1568 | struct drm_crtc_commit *commit; | |
1569 | int i; | |
1570 | ||
1ea0c02e DV |
1571 | for_each_crtc_in_state(old_state, crtc, crtc_state, i) { |
1572 | commit = old_state->crtcs[i].commit; | |
a095caa7 DV |
1573 | if (!commit) |
1574 | continue; | |
1575 | ||
1576 | /* backend must have consumed any event by now */ | |
1577 | WARN_ON(crtc->state->event); | |
1578 | spin_lock(&crtc->commit_lock); | |
1579 | complete_all(&commit->hw_done); | |
1580 | spin_unlock(&crtc->commit_lock); | |
1581 | } | |
1582 | } | |
1583 | EXPORT_SYMBOL(drm_atomic_helper_commit_hw_done); | |
1584 | ||
1585 | /** | |
1586 | * drm_atomic_helper_commit_cleanup_done - signal completion of commit | |
1ea0c02e | 1587 | * @old_state: atomic state object with old state structures |
a095caa7 | 1588 | * |
1ea0c02e DV |
1589 | * This signals completion of the atomic update @old_state, including any |
1590 | * cleanup work. If used, it must be called right before calling | |
0853695c | 1591 | * drm_atomic_state_put(). |
a095caa7 DV |
1592 | * |
1593 | * This is part of the atomic helper support for nonblocking commits, see | |
1594 | * drm_atomic_helper_setup_commit() for an overview. | |
1595 | */ | |
1ea0c02e | 1596 | void drm_atomic_helper_commit_cleanup_done(struct drm_atomic_state *old_state) |
a095caa7 DV |
1597 | { |
1598 | struct drm_crtc *crtc; | |
1599 | struct drm_crtc_state *crtc_state; | |
1600 | struct drm_crtc_commit *commit; | |
1601 | int i; | |
1602 | long ret; | |
1603 | ||
1ea0c02e DV |
1604 | for_each_crtc_in_state(old_state, crtc, crtc_state, i) { |
1605 | commit = old_state->crtcs[i].commit; | |
a095caa7 DV |
1606 | if (WARN_ON(!commit)) |
1607 | continue; | |
1608 | ||
1609 | spin_lock(&crtc->commit_lock); | |
1610 | complete_all(&commit->cleanup_done); | |
1611 | WARN_ON(!try_wait_for_completion(&commit->hw_done)); | |
1612 | ||
1613 | /* commit_list borrows our reference, need to remove before we | |
1614 | * clean up our drm_atomic_state. But only after it actually | |
1615 | * completed, otherwise subsequent commits won't stall properly. */ | |
7deef7f1 DV |
1616 | if (try_wait_for_completion(&commit->flip_done)) |
1617 | goto del_commit; | |
a095caa7 DV |
1618 | |
1619 | spin_unlock(&crtc->commit_lock); | |
1620 | ||
1621 | /* We must wait for the vblank event to signal our completion | |
1622 | * before releasing our reference, since the vblank work does | |
1623 | * not hold a reference of its own. */ | |
1624 | ret = wait_for_completion_timeout(&commit->flip_done, | |
1625 | 10*HZ); | |
1626 | if (ret == 0) | |
1627 | DRM_ERROR("[CRTC:%d:%s] flip_done timed out\n", | |
1628 | crtc->base.id, crtc->name); | |
1629 | ||
1630 | spin_lock(&crtc->commit_lock); | |
7deef7f1 | 1631 | del_commit: |
a095caa7 DV |
1632 | list_del(&commit->commit_entry); |
1633 | spin_unlock(&crtc->commit_lock); | |
1634 | } | |
1635 | } | |
1636 | EXPORT_SYMBOL(drm_atomic_helper_commit_cleanup_done); | |
1637 | ||
c2fcd274 | 1638 | /** |
2e3afd47 | 1639 | * drm_atomic_helper_prepare_planes - prepare plane resources before commit |
c2fcd274 | 1640 | * @dev: DRM device |
2e3afd47 | 1641 | * @state: atomic state object with new state structures |
c2fcd274 DV |
1642 | * |
1643 | * This function prepares plane state, specifically framebuffers, for the new | |
6806cdf9 DV |
1644 | * configuration, by calling &drm_plane_helper_funcs.prepare_fb. If any failure |
1645 | * is encountered this function will call &drm_plane_helper_funcs.cleanup_fb on | |
1646 | * any already successfully prepared framebuffer. | |
c2fcd274 DV |
1647 | * |
1648 | * Returns: | |
1649 | * 0 on success, negative error code on failure. | |
1650 | */ | |
1651 | int drm_atomic_helper_prepare_planes(struct drm_device *dev, | |
1652 | struct drm_atomic_state *state) | |
1653 | { | |
be9174a4 DV |
1654 | struct drm_plane *plane; |
1655 | struct drm_plane_state *plane_state; | |
1656 | int ret, i, j; | |
c2fcd274 | 1657 | |
be9174a4 | 1658 | for_each_plane_in_state(state, plane, plane_state, i) { |
b5ceff20 | 1659 | const struct drm_plane_helper_funcs *funcs; |
c2fcd274 DV |
1660 | |
1661 | funcs = plane->helper_private; | |
1662 | ||
844f9111 ML |
1663 | if (funcs->prepare_fb) { |
1664 | ret = funcs->prepare_fb(plane, plane_state); | |
c2fcd274 DV |
1665 | if (ret) |
1666 | goto fail; | |
1667 | } | |
1668 | } | |
1669 | ||
1670 | return 0; | |
1671 | ||
1672 | fail: | |
be9174a4 | 1673 | for_each_plane_in_state(state, plane, plane_state, j) { |
b5ceff20 | 1674 | const struct drm_plane_helper_funcs *funcs; |
c2fcd274 | 1675 | |
be9174a4 | 1676 | if (j >= i) |
c2fcd274 DV |
1677 | continue; |
1678 | ||
1679 | funcs = plane->helper_private; | |
1680 | ||
844f9111 ML |
1681 | if (funcs->cleanup_fb) |
1682 | funcs->cleanup_fb(plane, plane_state); | |
c2fcd274 DV |
1683 | } |
1684 | ||
1685 | return ret; | |
1686 | } | |
1687 | EXPORT_SYMBOL(drm_atomic_helper_prepare_planes); | |
1688 | ||
7135ac54 | 1689 | static bool plane_crtc_active(const struct drm_plane_state *state) |
aef9dbb8 DV |
1690 | { |
1691 | return state->crtc && state->crtc->state->active; | |
1692 | } | |
1693 | ||
c2fcd274 DV |
1694 | /** |
1695 | * drm_atomic_helper_commit_planes - commit plane state | |
1696 | * @dev: DRM device | |
b0fcfc89 | 1697 | * @old_state: atomic state object with old state structures |
2b58e98d | 1698 | * @flags: flags for committing plane state |
c2fcd274 DV |
1699 | * |
1700 | * This function commits the new plane state using the plane and atomic helper | |
1701 | * functions for planes and crtcs. It assumes that the atomic state has already | |
1702 | * been pushed into the relevant object state pointers, since this step can no | |
1703 | * longer fail. | |
1704 | * | |
b0fcfc89 | 1705 | * It still requires the global state object @old_state to know which planes and |
c2fcd274 | 1706 | * crtcs need to be updated though. |
de28d021 ML |
1707 | * |
1708 | * Note that this function does all plane updates across all CRTCs in one step. | |
1709 | * If the hardware can't support this approach look at | |
1710 | * drm_atomic_helper_commit_planes_on_crtc() instead. | |
6e48ae32 DV |
1711 | * |
1712 | * Plane parameters can be updated by applications while the associated CRTC is | |
1713 | * disabled. The DRM/KMS core will store the parameters in the plane state, | |
1714 | * which will be available to the driver when the CRTC is turned on. As a result | |
1715 | * most drivers don't need to be immediately notified of plane updates for a | |
1716 | * disabled CRTC. | |
1717 | * | |
2b58e98d LY |
1718 | * Unless otherwise needed, drivers are advised to set the ACTIVE_ONLY flag in |
1719 | * @flags in order not to receive plane update notifications related to a | |
1720 | * disabled CRTC. This avoids the need to manually ignore plane updates in | |
6e48ae32 DV |
1721 | * driver code when the driver and/or hardware can't or just don't need to deal |
1722 | * with updates on disabled CRTCs, for example when supporting runtime PM. | |
1723 | * | |
2b58e98d LY |
1724 | * Drivers may set the NO_DISABLE_AFTER_MODESET flag in @flags if the relevant |
1725 | * display controllers require to disable a CRTC's planes when the CRTC is | |
6806cdf9 DV |
1726 | * disabled. This function would skip the &drm_plane_helper_funcs.atomic_disable |
1727 | * call for a plane if the CRTC of the old plane state needs a modesetting | |
1728 | * operation. Of course, the drivers need to disable the planes in their CRTC | |
1729 | * disable callbacks since no one else would do that. | |
2b58e98d LY |
1730 | * |
1731 | * The drm_atomic_helper_commit() default implementation doesn't set the | |
1732 | * ACTIVE_ONLY flag to most closely match the behaviour of the legacy helpers. | |
1733 | * This should not be copied blindly by drivers. | |
c2fcd274 DV |
1734 | */ |
1735 | void drm_atomic_helper_commit_planes(struct drm_device *dev, | |
aef9dbb8 | 1736 | struct drm_atomic_state *old_state, |
2b58e98d | 1737 | uint32_t flags) |
c2fcd274 | 1738 | { |
df63b999 ACO |
1739 | struct drm_crtc *crtc; |
1740 | struct drm_crtc_state *old_crtc_state; | |
1741 | struct drm_plane *plane; | |
1742 | struct drm_plane_state *old_plane_state; | |
c2fcd274 | 1743 | int i; |
2b58e98d LY |
1744 | bool active_only = flags & DRM_PLANE_COMMIT_ACTIVE_ONLY; |
1745 | bool no_disable = flags & DRM_PLANE_COMMIT_NO_DISABLE_AFTER_MODESET; | |
c2fcd274 | 1746 | |
df63b999 | 1747 | for_each_crtc_in_state(old_state, crtc, old_crtc_state, i) { |
b5ceff20 | 1748 | const struct drm_crtc_helper_funcs *funcs; |
c2fcd274 DV |
1749 | |
1750 | funcs = crtc->helper_private; | |
1751 | ||
1752 | if (!funcs || !funcs->atomic_begin) | |
1753 | continue; | |
1754 | ||
aef9dbb8 DV |
1755 | if (active_only && !crtc->state->active) |
1756 | continue; | |
1757 | ||
613d2b27 | 1758 | funcs->atomic_begin(crtc, old_crtc_state); |
c2fcd274 DV |
1759 | } |
1760 | ||
df63b999 | 1761 | for_each_plane_in_state(old_state, plane, old_plane_state, i) { |
b5ceff20 | 1762 | const struct drm_plane_helper_funcs *funcs; |
216c59d6 | 1763 | bool disabling; |
c2fcd274 DV |
1764 | |
1765 | funcs = plane->helper_private; | |
1766 | ||
3cad4b68 | 1767 | if (!funcs) |
c2fcd274 DV |
1768 | continue; |
1769 | ||
216c59d6 LP |
1770 | disabling = drm_atomic_plane_disabling(plane, old_plane_state); |
1771 | ||
1772 | if (active_only) { | |
1773 | /* | |
1774 | * Skip planes related to inactive CRTCs. If the plane | |
1775 | * is enabled use the state of the current CRTC. If the | |
1776 | * plane is being disabled use the state of the old | |
1777 | * CRTC to avoid skipping planes being disabled on an | |
1778 | * active CRTC. | |
1779 | */ | |
1780 | if (!disabling && !plane_crtc_active(plane->state)) | |
1781 | continue; | |
1782 | if (disabling && !plane_crtc_active(old_plane_state)) | |
1783 | continue; | |
1784 | } | |
aef9dbb8 | 1785 | |
407b8bd9 TR |
1786 | /* |
1787 | * Special-case disabling the plane if drivers support it. | |
1788 | */ | |
2b58e98d LY |
1789 | if (disabling && funcs->atomic_disable) { |
1790 | struct drm_crtc_state *crtc_state; | |
1791 | ||
1792 | crtc_state = old_plane_state->crtc->state; | |
1793 | ||
1794 | if (drm_atomic_crtc_needs_modeset(crtc_state) && | |
1795 | no_disable) | |
1796 | continue; | |
1797 | ||
407b8bd9 | 1798 | funcs->atomic_disable(plane, old_plane_state); |
2b58e98d | 1799 | } else if (plane->state->crtc || disabling) { |
407b8bd9 | 1800 | funcs->atomic_update(plane, old_plane_state); |
2b58e98d | 1801 | } |
c2fcd274 DV |
1802 | } |
1803 | ||
df63b999 | 1804 | for_each_crtc_in_state(old_state, crtc, old_crtc_state, i) { |
b5ceff20 | 1805 | const struct drm_crtc_helper_funcs *funcs; |
c2fcd274 DV |
1806 | |
1807 | funcs = crtc->helper_private; | |
1808 | ||
1809 | if (!funcs || !funcs->atomic_flush) | |
1810 | continue; | |
1811 | ||
aef9dbb8 DV |
1812 | if (active_only && !crtc->state->active) |
1813 | continue; | |
1814 | ||
613d2b27 | 1815 | funcs->atomic_flush(crtc, old_crtc_state); |
c2fcd274 DV |
1816 | } |
1817 | } | |
1818 | EXPORT_SYMBOL(drm_atomic_helper_commit_planes); | |
1819 | ||
de28d021 ML |
1820 | /** |
1821 | * drm_atomic_helper_commit_planes_on_crtc - commit plane state for a crtc | |
1822 | * @old_crtc_state: atomic state object with the old crtc state | |
1823 | * | |
1824 | * This function commits the new plane state using the plane and atomic helper | |
1825 | * functions for planes on the specific crtc. It assumes that the atomic state | |
1826 | * has already been pushed into the relevant object state pointers, since this | |
1827 | * step can no longer fail. | |
1828 | * | |
1829 | * This function is useful when plane updates should be done crtc-by-crtc | |
1830 | * instead of one global step like drm_atomic_helper_commit_planes() does. | |
1831 | * | |
1832 | * This function can only be savely used when planes are not allowed to move | |
1833 | * between different CRTCs because this function doesn't handle inter-CRTC | |
1834 | * depencies. Callers need to ensure that either no such depencies exist, | |
1835 | * resolve them through ordering of commit calls or through some other means. | |
1836 | */ | |
1837 | void | |
1838 | drm_atomic_helper_commit_planes_on_crtc(struct drm_crtc_state *old_crtc_state) | |
1839 | { | |
1840 | const struct drm_crtc_helper_funcs *crtc_funcs; | |
1841 | struct drm_crtc *crtc = old_crtc_state->crtc; | |
1842 | struct drm_atomic_state *old_state = old_crtc_state->state; | |
1843 | struct drm_plane *plane; | |
1844 | unsigned plane_mask; | |
1845 | ||
1846 | plane_mask = old_crtc_state->plane_mask; | |
1847 | plane_mask |= crtc->state->plane_mask; | |
1848 | ||
1849 | crtc_funcs = crtc->helper_private; | |
1850 | if (crtc_funcs && crtc_funcs->atomic_begin) | |
613d2b27 | 1851 | crtc_funcs->atomic_begin(crtc, old_crtc_state); |
de28d021 ML |
1852 | |
1853 | drm_for_each_plane_mask(plane, crtc->dev, plane_mask) { | |
1854 | struct drm_plane_state *old_plane_state = | |
1855 | drm_atomic_get_existing_plane_state(old_state, plane); | |
1856 | const struct drm_plane_helper_funcs *plane_funcs; | |
1857 | ||
1858 | plane_funcs = plane->helper_private; | |
1859 | ||
1860 | if (!old_plane_state || !plane_funcs) | |
1861 | continue; | |
1862 | ||
1863 | WARN_ON(plane->state->crtc && plane->state->crtc != crtc); | |
1864 | ||
1865 | if (drm_atomic_plane_disabling(plane, old_plane_state) && | |
1866 | plane_funcs->atomic_disable) | |
1867 | plane_funcs->atomic_disable(plane, old_plane_state); | |
1868 | else if (plane->state->crtc || | |
1869 | drm_atomic_plane_disabling(plane, old_plane_state)) | |
1870 | plane_funcs->atomic_update(plane, old_plane_state); | |
1871 | } | |
1872 | ||
1873 | if (crtc_funcs && crtc_funcs->atomic_flush) | |
613d2b27 | 1874 | crtc_funcs->atomic_flush(crtc, old_crtc_state); |
de28d021 ML |
1875 | } |
1876 | EXPORT_SYMBOL(drm_atomic_helper_commit_planes_on_crtc); | |
1877 | ||
6753ba97 JS |
1878 | /** |
1879 | * drm_atomic_helper_disable_planes_on_crtc - helper to disable CRTC's planes | |
28500291 | 1880 | * @old_crtc_state: atomic state object with the old CRTC state |
6753ba97 JS |
1881 | * @atomic: if set, synchronize with CRTC's atomic_begin/flush hooks |
1882 | * | |
1883 | * Disables all planes associated with the given CRTC. This can be | |
28500291 LY |
1884 | * used for instance in the CRTC helper atomic_disable callback to disable |
1885 | * all planes. | |
6753ba97 JS |
1886 | * |
1887 | * If the atomic-parameter is set the function calls the CRTC's | |
1888 | * atomic_begin hook before and atomic_flush hook after disabling the | |
1889 | * planes. | |
1890 | * | |
1891 | * It is a bug to call this function without having implemented the | |
6806cdf9 | 1892 | * &drm_plane_helper_funcs.atomic_disable plane hook. |
6753ba97 | 1893 | */ |
28500291 LY |
1894 | void |
1895 | drm_atomic_helper_disable_planes_on_crtc(struct drm_crtc_state *old_crtc_state, | |
1896 | bool atomic) | |
6753ba97 | 1897 | { |
28500291 | 1898 | struct drm_crtc *crtc = old_crtc_state->crtc; |
6753ba97 JS |
1899 | const struct drm_crtc_helper_funcs *crtc_funcs = |
1900 | crtc->helper_private; | |
1901 | struct drm_plane *plane; | |
1902 | ||
1903 | if (atomic && crtc_funcs && crtc_funcs->atomic_begin) | |
1904 | crtc_funcs->atomic_begin(crtc, NULL); | |
1905 | ||
28500291 | 1906 | drm_atomic_crtc_state_for_each_plane(plane, old_crtc_state) { |
6753ba97 JS |
1907 | const struct drm_plane_helper_funcs *plane_funcs = |
1908 | plane->helper_private; | |
1909 | ||
28500291 | 1910 | if (!plane_funcs) |
6753ba97 JS |
1911 | continue; |
1912 | ||
1913 | WARN_ON(!plane_funcs->atomic_disable); | |
1914 | if (plane_funcs->atomic_disable) | |
1915 | plane_funcs->atomic_disable(plane, NULL); | |
1916 | } | |
1917 | ||
1918 | if (atomic && crtc_funcs && crtc_funcs->atomic_flush) | |
1919 | crtc_funcs->atomic_flush(crtc, NULL); | |
1920 | } | |
1921 | EXPORT_SYMBOL(drm_atomic_helper_disable_planes_on_crtc); | |
1922 | ||
c2fcd274 DV |
1923 | /** |
1924 | * drm_atomic_helper_cleanup_planes - cleanup plane resources after commit | |
1925 | * @dev: DRM device | |
1926 | * @old_state: atomic state object with old state structures | |
1927 | * | |
1928 | * This function cleans up plane state, specifically framebuffers, from the old | |
1929 | * configuration. Hence the old configuration must be perserved in @old_state to | |
1930 | * be able to call this function. | |
1931 | * | |
1932 | * This function must also be called on the new state when the atomic update | |
1933 | * fails at any point after calling drm_atomic_helper_prepare_planes(). | |
1934 | */ | |
1935 | void drm_atomic_helper_cleanup_planes(struct drm_device *dev, | |
1936 | struct drm_atomic_state *old_state) | |
1937 | { | |
df63b999 ACO |
1938 | struct drm_plane *plane; |
1939 | struct drm_plane_state *plane_state; | |
c2fcd274 DV |
1940 | int i; |
1941 | ||
df63b999 | 1942 | for_each_plane_in_state(old_state, plane, plane_state, i) { |
b5ceff20 | 1943 | const struct drm_plane_helper_funcs *funcs; |
c2fcd274 | 1944 | |
c2fcd274 DV |
1945 | funcs = plane->helper_private; |
1946 | ||
844f9111 ML |
1947 | if (funcs->cleanup_fb) |
1948 | funcs->cleanup_fb(plane, plane_state); | |
c2fcd274 DV |
1949 | } |
1950 | } | |
1951 | EXPORT_SYMBOL(drm_atomic_helper_cleanup_planes); | |
1952 | ||
1953 | /** | |
1954 | * drm_atomic_helper_swap_state - store atomic state into current sw state | |
c2fcd274 | 1955 | * @state: atomic state |
5e84c269 | 1956 | * @stall: stall for proceeding commits |
c2fcd274 DV |
1957 | * |
1958 | * This function stores the atomic state into the current state pointers in all | |
1959 | * driver objects. It should be called after all failing steps have been done | |
1960 | * and succeeded, but before the actual hardware state is committed. | |
1961 | * | |
1962 | * For cleanup and error recovery the current state for all changed objects will | |
1963 | * be swaped into @state. | |
1964 | * | |
1965 | * With that sequence it fits perfectly into the plane prepare/cleanup sequence: | |
1966 | * | |
1967 | * 1. Call drm_atomic_helper_prepare_planes() with the staged atomic state. | |
1968 | * | |
1969 | * 2. Do any other steps that might fail. | |
1970 | * | |
1971 | * 3. Put the staged state into the current state pointers with this function. | |
1972 | * | |
1973 | * 4. Actually commit the hardware state. | |
1974 | * | |
26196f7e | 1975 | * 5. Call drm_atomic_helper_cleanup_planes() with @state, which since step 3 |
c2fcd274 | 1976 | * contains the old state. Also do any other cleanup required with that state. |
a095caa7 DV |
1977 | * |
1978 | * @stall must be set when nonblocking commits for this driver directly access | |
6806cdf9 DV |
1979 | * the &drm_plane.state, &drm_crtc.state or &drm_connector.state pointer. With |
1980 | * the current atomic helpers this is almost always the case, since the helpers | |
a095caa7 | 1981 | * don't pass the right state structures to the callbacks. |
c2fcd274 | 1982 | */ |
5e84c269 DV |
1983 | void drm_atomic_helper_swap_state(struct drm_atomic_state *state, |
1984 | bool stall) | |
c2fcd274 DV |
1985 | { |
1986 | int i; | |
a095caa7 | 1987 | long ret; |
be9174a4 | 1988 | struct drm_connector *connector; |
581e49fe | 1989 | struct drm_connector_state *conn_state, *old_conn_state; |
be9174a4 | 1990 | struct drm_crtc *crtc; |
581e49fe | 1991 | struct drm_crtc_state *crtc_state, *old_crtc_state; |
be9174a4 | 1992 | struct drm_plane *plane; |
581e49fe | 1993 | struct drm_plane_state *plane_state, *old_plane_state; |
a095caa7 DV |
1994 | struct drm_crtc_commit *commit; |
1995 | ||
1996 | if (stall) { | |
1997 | for_each_crtc_in_state(state, crtc, crtc_state, i) { | |
1998 | spin_lock(&crtc->commit_lock); | |
1999 | commit = list_first_entry_or_null(&crtc->commit_list, | |
2000 | struct drm_crtc_commit, commit_entry); | |
2001 | if (commit) | |
2002 | drm_crtc_commit_get(commit); | |
2003 | spin_unlock(&crtc->commit_lock); | |
2004 | ||
2005 | if (!commit) | |
2006 | continue; | |
2007 | ||
2008 | ret = wait_for_completion_timeout(&commit->hw_done, | |
2009 | 10*HZ); | |
2010 | if (ret == 0) | |
2011 | DRM_ERROR("[CRTC:%d:%s] hw_done timed out\n", | |
2012 | crtc->base.id, crtc->name); | |
2013 | drm_crtc_commit_put(commit); | |
2014 | } | |
2015 | } | |
c2fcd274 | 2016 | |
581e49fe ML |
2017 | for_each_oldnew_connector_in_state(state, connector, old_conn_state, conn_state, i) { |
2018 | WARN_ON(connector->state != old_conn_state); | |
2019 | ||
c2fcd274 | 2020 | connector->state->state = state; |
63e83c1d | 2021 | swap(state->connectors[i].state, connector->state); |
c2fcd274 DV |
2022 | connector->state->state = NULL; |
2023 | } | |
2024 | ||
581e49fe ML |
2025 | for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, crtc_state, i) { |
2026 | WARN_ON(crtc->state != old_crtc_state); | |
2027 | ||
c2fcd274 | 2028 | crtc->state->state = state; |
5d943aa6 | 2029 | swap(state->crtcs[i].state, crtc->state); |
c2fcd274 | 2030 | crtc->state->state = NULL; |
a095caa7 DV |
2031 | |
2032 | if (state->crtcs[i].commit) { | |
2033 | spin_lock(&crtc->commit_lock); | |
2034 | list_add(&state->crtcs[i].commit->commit_entry, | |
2035 | &crtc->commit_list); | |
2036 | spin_unlock(&crtc->commit_lock); | |
2037 | ||
2038 | state->crtcs[i].commit->event = NULL; | |
2039 | } | |
c2fcd274 DV |
2040 | } |
2041 | ||
581e49fe ML |
2042 | for_each_oldnew_plane_in_state(state, plane, old_plane_state, plane_state, i) { |
2043 | WARN_ON(plane->state != old_plane_state); | |
2044 | ||
c2fcd274 | 2045 | plane->state->state = state; |
b8b5342b | 2046 | swap(state->planes[i].state, plane->state); |
c2fcd274 DV |
2047 | plane->state->state = NULL; |
2048 | } | |
2049 | } | |
2050 | EXPORT_SYMBOL(drm_atomic_helper_swap_state); | |
042652ed DV |
2051 | |
2052 | /** | |
2053 | * drm_atomic_helper_update_plane - Helper for primary plane update using atomic | |
2054 | * @plane: plane object to update | |
2055 | * @crtc: owning CRTC of owning plane | |
2056 | * @fb: framebuffer to flip onto plane | |
2057 | * @crtc_x: x offset of primary plane on crtc | |
2058 | * @crtc_y: y offset of primary plane on crtc | |
2059 | * @crtc_w: width of primary plane rectangle on crtc | |
2060 | * @crtc_h: height of primary plane rectangle on crtc | |
2061 | * @src_x: x offset of @fb for panning | |
2062 | * @src_y: y offset of @fb for panning | |
2063 | * @src_w: width of source rectangle in @fb | |
2064 | * @src_h: height of source rectangle in @fb | |
2065 | * | |
2066 | * Provides a default plane update handler using the atomic driver interface. | |
2067 | * | |
2068 | * RETURNS: | |
2069 | * Zero on success, error code on failure | |
2070 | */ | |
2071 | int drm_atomic_helper_update_plane(struct drm_plane *plane, | |
2072 | struct drm_crtc *crtc, | |
2073 | struct drm_framebuffer *fb, | |
2074 | int crtc_x, int crtc_y, | |
2075 | unsigned int crtc_w, unsigned int crtc_h, | |
2076 | uint32_t src_x, uint32_t src_y, | |
2077 | uint32_t src_w, uint32_t src_h) | |
2078 | { | |
2079 | struct drm_atomic_state *state; | |
2080 | struct drm_plane_state *plane_state; | |
2081 | int ret = 0; | |
2082 | ||
2083 | state = drm_atomic_state_alloc(plane->dev); | |
2084 | if (!state) | |
2085 | return -ENOMEM; | |
2086 | ||
2087 | state->acquire_ctx = drm_modeset_legacy_acquire_ctx(crtc); | |
2088 | retry: | |
2089 | plane_state = drm_atomic_get_plane_state(state, plane); | |
2090 | if (IS_ERR(plane_state)) { | |
2091 | ret = PTR_ERR(plane_state); | |
2092 | goto fail; | |
2093 | } | |
2094 | ||
07cc0ef6 | 2095 | ret = drm_atomic_set_crtc_for_plane(plane_state, crtc); |
042652ed DV |
2096 | if (ret != 0) |
2097 | goto fail; | |
321ebf04 | 2098 | drm_atomic_set_fb_for_plane(plane_state, fb); |
042652ed DV |
2099 | plane_state->crtc_x = crtc_x; |
2100 | plane_state->crtc_y = crtc_y; | |
042652ed | 2101 | plane_state->crtc_w = crtc_w; |
02e6f379 | 2102 | plane_state->crtc_h = crtc_h; |
042652ed DV |
2103 | plane_state->src_x = src_x; |
2104 | plane_state->src_y = src_y; | |
042652ed | 2105 | plane_state->src_w = src_w; |
02e6f379 | 2106 | plane_state->src_h = src_h; |
042652ed | 2107 | |
3671c580 DV |
2108 | if (plane == crtc->cursor) |
2109 | state->legacy_cursor_update = true; | |
2110 | ||
042652ed | 2111 | ret = drm_atomic_commit(state); |
042652ed DV |
2112 | fail: |
2113 | if (ret == -EDEADLK) | |
2114 | goto backoff; | |
2115 | ||
0853695c | 2116 | drm_atomic_state_put(state); |
042652ed | 2117 | return ret; |
0853695c | 2118 | |
042652ed | 2119 | backoff: |
042652ed | 2120 | drm_atomic_state_clear(state); |
6f75cea6 | 2121 | drm_atomic_legacy_backoff(state); |
042652ed DV |
2122 | |
2123 | /* | |
2124 | * Someone might have exchanged the framebuffer while we dropped locks | |
2125 | * in the backoff code. We need to fix up the fb refcount tracking the | |
2126 | * core does for us. | |
2127 | */ | |
2128 | plane->old_fb = plane->fb; | |
2129 | ||
2130 | goto retry; | |
2131 | } | |
2132 | EXPORT_SYMBOL(drm_atomic_helper_update_plane); | |
2133 | ||
2134 | /** | |
2135 | * drm_atomic_helper_disable_plane - Helper for primary plane disable using * atomic | |
2136 | * @plane: plane to disable | |
2137 | * | |
2138 | * Provides a default plane disable handler using the atomic driver interface. | |
2139 | * | |
2140 | * RETURNS: | |
2141 | * Zero on success, error code on failure | |
2142 | */ | |
2143 | int drm_atomic_helper_disable_plane(struct drm_plane *plane) | |
2144 | { | |
2145 | struct drm_atomic_state *state; | |
2146 | struct drm_plane_state *plane_state; | |
2147 | int ret = 0; | |
2148 | ||
aa54e2ee JSP |
2149 | /* |
2150 | * FIXME: Without plane->crtc set we can't get at the implicit legacy | |
2151 | * acquire context. The real fix will be to wire the acquire ctx through | |
2152 | * everywhere we need it, but meanwhile prevent chaos by just skipping | |
2153 | * this noop. The critical case is the cursor ioctls which a) only grab | |
2154 | * crtc/cursor-plane locks (so we need the crtc to get at the right | |
2155 | * acquire context) and b) can try to disable the plane multiple times. | |
2156 | */ | |
2157 | if (!plane->crtc) | |
2158 | return 0; | |
2159 | ||
042652ed DV |
2160 | state = drm_atomic_state_alloc(plane->dev); |
2161 | if (!state) | |
2162 | return -ENOMEM; | |
2163 | ||
2164 | state->acquire_ctx = drm_modeset_legacy_acquire_ctx(plane->crtc); | |
2165 | retry: | |
2166 | plane_state = drm_atomic_get_plane_state(state, plane); | |
2167 | if (IS_ERR(plane_state)) { | |
2168 | ret = PTR_ERR(plane_state); | |
2169 | goto fail; | |
2170 | } | |
2171 | ||
24e79d0d ML |
2172 | if (plane_state->crtc && (plane == plane->crtc->cursor)) |
2173 | plane_state->state->legacy_cursor_update = true; | |
2174 | ||
bbb1e524 | 2175 | ret = __drm_atomic_helper_disable_plane(plane, plane_state); |
042652ed DV |
2176 | if (ret != 0) |
2177 | goto fail; | |
f02ad907 | 2178 | |
042652ed | 2179 | ret = drm_atomic_commit(state); |
042652ed DV |
2180 | fail: |
2181 | if (ret == -EDEADLK) | |
2182 | goto backoff; | |
2183 | ||
0853695c | 2184 | drm_atomic_state_put(state); |
042652ed | 2185 | return ret; |
0853695c | 2186 | |
042652ed | 2187 | backoff: |
042652ed | 2188 | drm_atomic_state_clear(state); |
6f75cea6 | 2189 | drm_atomic_legacy_backoff(state); |
042652ed DV |
2190 | |
2191 | /* | |
2192 | * Someone might have exchanged the framebuffer while we dropped locks | |
2193 | * in the backoff code. We need to fix up the fb refcount tracking the | |
2194 | * core does for us. | |
2195 | */ | |
2196 | plane->old_fb = plane->fb; | |
2197 | ||
2198 | goto retry; | |
2199 | } | |
2200 | EXPORT_SYMBOL(drm_atomic_helper_disable_plane); | |
2201 | ||
bbb1e524 RC |
2202 | /* just used from fb-helper and atomic-helper: */ |
2203 | int __drm_atomic_helper_disable_plane(struct drm_plane *plane, | |
2204 | struct drm_plane_state *plane_state) | |
2205 | { | |
2206 | int ret; | |
2207 | ||
2208 | ret = drm_atomic_set_crtc_for_plane(plane_state, NULL); | |
2209 | if (ret != 0) | |
2210 | return ret; | |
2211 | ||
2212 | drm_atomic_set_fb_for_plane(plane_state, NULL); | |
2213 | plane_state->crtc_x = 0; | |
2214 | plane_state->crtc_y = 0; | |
bbb1e524 | 2215 | plane_state->crtc_w = 0; |
02e6f379 | 2216 | plane_state->crtc_h = 0; |
bbb1e524 RC |
2217 | plane_state->src_x = 0; |
2218 | plane_state->src_y = 0; | |
bbb1e524 | 2219 | plane_state->src_w = 0; |
02e6f379 | 2220 | plane_state->src_h = 0; |
bbb1e524 | 2221 | |
bbb1e524 RC |
2222 | return 0; |
2223 | } | |
2224 | ||
042652ed DV |
2225 | static int update_output_state(struct drm_atomic_state *state, |
2226 | struct drm_mode_set *set) | |
2227 | { | |
2228 | struct drm_device *dev = set->crtc->dev; | |
df63b999 ACO |
2229 | struct drm_crtc *crtc; |
2230 | struct drm_crtc_state *crtc_state; | |
2231 | struct drm_connector *connector; | |
042652ed | 2232 | struct drm_connector_state *conn_state; |
6ab520a2 | 2233 | int ret, i; |
042652ed DV |
2234 | |
2235 | ret = drm_modeset_lock(&dev->mode_config.connection_mutex, | |
2236 | state->acquire_ctx); | |
2237 | if (ret) | |
2238 | return ret; | |
2239 | ||
6ab520a2 ML |
2240 | /* First disable all connectors on the target crtc. */ |
2241 | ret = drm_atomic_add_affected_connectors(state, set->crtc); | |
2242 | if (ret) | |
2243 | return ret; | |
042652ed | 2244 | |
df63b999 | 2245 | for_each_connector_in_state(state, connector, conn_state, i) { |
042652ed DV |
2246 | if (conn_state->crtc == set->crtc) { |
2247 | ret = drm_atomic_set_crtc_for_connector(conn_state, | |
2248 | NULL); | |
2249 | if (ret) | |
2250 | return ret; | |
40ee6fbe MN |
2251 | /* Make sure legacy setCrtc always re-trains */ |
2252 | conn_state->link_status = DRM_LINK_STATUS_GOOD; | |
042652ed | 2253 | } |
6ab520a2 | 2254 | } |
042652ed | 2255 | |
6ab520a2 ML |
2256 | /* Then set all connectors from set->connectors on the target crtc */ |
2257 | for (i = 0; i < set->num_connectors; i++) { | |
2258 | conn_state = drm_atomic_get_connector_state(state, | |
2259 | set->connectors[i]); | |
2260 | if (IS_ERR(conn_state)) | |
2261 | return PTR_ERR(conn_state); | |
2262 | ||
2263 | ret = drm_atomic_set_crtc_for_connector(conn_state, | |
2264 | set->crtc); | |
2265 | if (ret) | |
2266 | return ret; | |
042652ed DV |
2267 | } |
2268 | ||
df63b999 | 2269 | for_each_crtc_in_state(state, crtc, crtc_state, i) { |
042652ed DV |
2270 | /* Don't update ->enable for the CRTC in the set_config request, |
2271 | * since a mismatch would indicate a bug in the upper layers. | |
2272 | * The actual modeset code later on will catch any | |
2273 | * inconsistencies here. */ | |
2274 | if (crtc == set->crtc) | |
2275 | continue; | |
2276 | ||
14de6c44 | 2277 | if (!crtc_state->connector_mask) { |
c30f55a7 LP |
2278 | ret = drm_atomic_set_mode_prop_for_crtc(crtc_state, |
2279 | NULL); | |
2280 | if (ret < 0) | |
2281 | return ret; | |
2282 | ||
9b5edbf7 | 2283 | crtc_state->active = false; |
c30f55a7 | 2284 | } |
042652ed DV |
2285 | } |
2286 | ||
2287 | return 0; | |
2288 | } | |
2289 | ||
2290 | /** | |
2291 | * drm_atomic_helper_set_config - set a new config from userspace | |
2292 | * @set: mode set configuration | |
2293 | * | |
2294 | * Provides a default crtc set_config handler using the atomic driver interface. | |
2295 | * | |
40ee6fbe MN |
2296 | * NOTE: For backwards compatibility with old userspace this automatically |
2297 | * resets the "link-status" property to GOOD, to force any link | |
2298 | * re-training. The SETCRTC ioctl does not define whether an update does | |
2299 | * need a full modeset or just a plane update, hence we're allowed to do | |
2300 | * that. See also drm_mode_connector_set_link_status_property(). | |
2301 | * | |
042652ed DV |
2302 | * Returns: |
2303 | * Returns 0 on success, negative errno numbers on failure. | |
2304 | */ | |
2305 | int drm_atomic_helper_set_config(struct drm_mode_set *set) | |
2306 | { | |
2307 | struct drm_atomic_state *state; | |
2308 | struct drm_crtc *crtc = set->crtc; | |
042652ed DV |
2309 | int ret = 0; |
2310 | ||
2311 | state = drm_atomic_state_alloc(crtc->dev); | |
2312 | if (!state) | |
2313 | return -ENOMEM; | |
2314 | ||
40616a26 | 2315 | state->legacy_set_config = true; |
042652ed DV |
2316 | state->acquire_ctx = drm_modeset_legacy_acquire_ctx(crtc); |
2317 | retry: | |
bbb1e524 RC |
2318 | ret = __drm_atomic_helper_set_config(set, state); |
2319 | if (ret != 0) | |
042652ed | 2320 | goto fail; |
042652ed | 2321 | |
bbb1e524 | 2322 | ret = drm_atomic_commit(state); |
bbb1e524 RC |
2323 | fail: |
2324 | if (ret == -EDEADLK) | |
2325 | goto backoff; | |
2326 | ||
0853695c | 2327 | drm_atomic_state_put(state); |
bbb1e524 | 2328 | return ret; |
0853695c | 2329 | |
bbb1e524 RC |
2330 | backoff: |
2331 | drm_atomic_state_clear(state); | |
2332 | drm_atomic_legacy_backoff(state); | |
2333 | ||
2334 | /* | |
2335 | * Someone might have exchanged the framebuffer while we dropped locks | |
2336 | * in the backoff code. We need to fix up the fb refcount tracking the | |
2337 | * core does for us. | |
2338 | */ | |
2339 | crtc->primary->old_fb = crtc->primary->fb; | |
2340 | ||
2341 | goto retry; | |
2342 | } | |
2343 | EXPORT_SYMBOL(drm_atomic_helper_set_config); | |
2344 | ||
2345 | /* just used from fb-helper and atomic-helper: */ | |
2346 | int __drm_atomic_helper_set_config(struct drm_mode_set *set, | |
2347 | struct drm_atomic_state *state) | |
2348 | { | |
2349 | struct drm_crtc_state *crtc_state; | |
2350 | struct drm_plane_state *primary_state; | |
2351 | struct drm_crtc *crtc = set->crtc; | |
83926117 | 2352 | int hdisplay, vdisplay; |
bbb1e524 RC |
2353 | int ret; |
2354 | ||
2355 | crtc_state = drm_atomic_get_crtc_state(state, crtc); | |
2356 | if (IS_ERR(crtc_state)) | |
2357 | return PTR_ERR(crtc_state); | |
2358 | ||
2359 | primary_state = drm_atomic_get_plane_state(state, crtc->primary); | |
2360 | if (IS_ERR(primary_state)) | |
2361 | return PTR_ERR(primary_state); | |
e5b5341c | 2362 | |
042652ed DV |
2363 | if (!set->mode) { |
2364 | WARN_ON(set->fb); | |
2365 | WARN_ON(set->num_connectors); | |
2366 | ||
819364da DS |
2367 | ret = drm_atomic_set_mode_for_crtc(crtc_state, NULL); |
2368 | if (ret != 0) | |
bbb1e524 | 2369 | return ret; |
819364da | 2370 | |
eab3bbef | 2371 | crtc_state->active = false; |
e5b5341c | 2372 | |
07cc0ef6 | 2373 | ret = drm_atomic_set_crtc_for_plane(primary_state, NULL); |
e5b5341c | 2374 | if (ret != 0) |
bbb1e524 | 2375 | return ret; |
e5b5341c RC |
2376 | |
2377 | drm_atomic_set_fb_for_plane(primary_state, NULL); | |
2378 | ||
042652ed DV |
2379 | goto commit; |
2380 | } | |
2381 | ||
2382 | WARN_ON(!set->fb); | |
2383 | WARN_ON(!set->num_connectors); | |
2384 | ||
819364da DS |
2385 | ret = drm_atomic_set_mode_for_crtc(crtc_state, set->mode); |
2386 | if (ret != 0) | |
bbb1e524 | 2387 | return ret; |
819364da | 2388 | |
eab3bbef | 2389 | crtc_state->active = true; |
042652ed | 2390 | |
07cc0ef6 | 2391 | ret = drm_atomic_set_crtc_for_plane(primary_state, crtc); |
042652ed | 2392 | if (ret != 0) |
bbb1e524 RC |
2393 | return ret; |
2394 | ||
196cd5d3 | 2395 | drm_mode_get_hv_timing(set->mode, &hdisplay, &vdisplay); |
83926117 | 2396 | |
321ebf04 | 2397 | drm_atomic_set_fb_for_plane(primary_state, set->fb); |
042652ed DV |
2398 | primary_state->crtc_x = 0; |
2399 | primary_state->crtc_y = 0; | |
83926117 | 2400 | primary_state->crtc_w = hdisplay; |
02e6f379 | 2401 | primary_state->crtc_h = vdisplay; |
042652ed DV |
2402 | primary_state->src_x = set->x << 16; |
2403 | primary_state->src_y = set->y << 16; | |
bd2ef25d | 2404 | if (drm_rotation_90_or_270(primary_state->rotation)) { |
83926117 | 2405 | primary_state->src_w = vdisplay << 16; |
02e6f379 | 2406 | primary_state->src_h = hdisplay << 16; |
41121248 | 2407 | } else { |
83926117 | 2408 | primary_state->src_w = hdisplay << 16; |
02e6f379 | 2409 | primary_state->src_h = vdisplay << 16; |
41121248 | 2410 | } |
042652ed DV |
2411 | |
2412 | commit: | |
2413 | ret = update_output_state(state, set); | |
2414 | if (ret) | |
bbb1e524 | 2415 | return ret; |
042652ed | 2416 | |
042652ed | 2417 | return 0; |
042652ed | 2418 | } |
042652ed | 2419 | |
14942760 TR |
2420 | /** |
2421 | * drm_atomic_helper_disable_all - disable all currently active outputs | |
2422 | * @dev: DRM device | |
2423 | * @ctx: lock acquisition context | |
2424 | * | |
2425 | * Loops through all connectors, finding those that aren't turned off and then | |
2426 | * turns them off by setting their DPMS mode to OFF and deactivating the CRTC | |
2427 | * that they are connected to. | |
2428 | * | |
2429 | * This is used for example in suspend/resume to disable all currently active | |
2430 | * functions when suspending. | |
2431 | * | |
2432 | * Note that if callers haven't already acquired all modeset locks this might | |
2433 | * return -EDEADLK, which must be handled by calling drm_modeset_backoff(). | |
2434 | * | |
2435 | * Returns: | |
2436 | * 0 on success or a negative error code on failure. | |
2437 | * | |
2438 | * See also: | |
2439 | * drm_atomic_helper_suspend(), drm_atomic_helper_resume() | |
2440 | */ | |
2441 | int drm_atomic_helper_disable_all(struct drm_device *dev, | |
2442 | struct drm_modeset_acquire_ctx *ctx) | |
2443 | { | |
2444 | struct drm_atomic_state *state; | |
9b2104f4 | 2445 | struct drm_connector_state *conn_state; |
14942760 | 2446 | struct drm_connector *conn; |
9b2104f4 ML |
2447 | struct drm_plane_state *plane_state; |
2448 | struct drm_plane *plane; | |
2449 | struct drm_crtc_state *crtc_state; | |
2450 | struct drm_crtc *crtc; | |
2451 | int ret, i; | |
14942760 TR |
2452 | |
2453 | state = drm_atomic_state_alloc(dev); | |
2454 | if (!state) | |
2455 | return -ENOMEM; | |
2456 | ||
2457 | state->acquire_ctx = ctx; | |
2458 | ||
9b2104f4 | 2459 | drm_for_each_crtc(crtc, dev) { |
14942760 TR |
2460 | crtc_state = drm_atomic_get_crtc_state(state, crtc); |
2461 | if (IS_ERR(crtc_state)) { | |
9b2104f4 | 2462 | ret = PTR_ERR(crtc_state); |
14942760 TR |
2463 | goto free; |
2464 | } | |
2465 | ||
2466 | crtc_state->active = false; | |
9b2104f4 ML |
2467 | |
2468 | ret = drm_atomic_set_mode_prop_for_crtc(crtc_state, NULL); | |
2469 | if (ret < 0) | |
2470 | goto free; | |
2471 | ||
2472 | ret = drm_atomic_add_affected_planes(state, crtc); | |
2473 | if (ret < 0) | |
2474 | goto free; | |
2475 | ||
2476 | ret = drm_atomic_add_affected_connectors(state, crtc); | |
2477 | if (ret < 0) | |
2478 | goto free; | |
2479 | } | |
2480 | ||
2481 | for_each_connector_in_state(state, conn, conn_state, i) { | |
2482 | ret = drm_atomic_set_crtc_for_connector(conn_state, NULL); | |
2483 | if (ret < 0) | |
2484 | goto free; | |
2485 | } | |
2486 | ||
2487 | for_each_plane_in_state(state, plane, plane_state, i) { | |
2488 | ret = drm_atomic_set_crtc_for_plane(plane_state, NULL); | |
2489 | if (ret < 0) | |
2490 | goto free; | |
2491 | ||
2492 | drm_atomic_set_fb_for_plane(plane_state, NULL); | |
14942760 TR |
2493 | } |
2494 | ||
9b2104f4 | 2495 | ret = drm_atomic_commit(state); |
14942760 | 2496 | free: |
0853695c | 2497 | drm_atomic_state_put(state); |
9b2104f4 | 2498 | return ret; |
14942760 | 2499 | } |
9b2104f4 | 2500 | |
14942760 TR |
2501 | EXPORT_SYMBOL(drm_atomic_helper_disable_all); |
2502 | ||
2503 | /** | |
2504 | * drm_atomic_helper_suspend - subsystem-level suspend helper | |
2505 | * @dev: DRM device | |
2506 | * | |
2507 | * Duplicates the current atomic state, disables all active outputs and then | |
2508 | * returns a pointer to the original atomic state to the caller. Drivers can | |
2509 | * pass this pointer to the drm_atomic_helper_resume() helper upon resume to | |
2510 | * restore the output configuration that was active at the time the system | |
2511 | * entered suspend. | |
2512 | * | |
2513 | * Note that it is potentially unsafe to use this. The atomic state object | |
2514 | * returned by this function is assumed to be persistent. Drivers must ensure | |
2515 | * that this holds true. Before calling this function, drivers must make sure | |
2516 | * to suspend fbdev emulation so that nothing can be using the device. | |
2517 | * | |
2518 | * Returns: | |
2519 | * A pointer to a copy of the state before suspend on success or an ERR_PTR()- | |
2520 | * encoded error code on failure. Drivers should store the returned atomic | |
2521 | * state object and pass it to the drm_atomic_helper_resume() helper upon | |
2522 | * resume. | |
2523 | * | |
2524 | * See also: | |
2525 | * drm_atomic_helper_duplicate_state(), drm_atomic_helper_disable_all(), | |
581e49fe | 2526 | * drm_atomic_helper_resume(), drm_atomic_helper_commit_duplicated_state() |
14942760 TR |
2527 | */ |
2528 | struct drm_atomic_state *drm_atomic_helper_suspend(struct drm_device *dev) | |
2529 | { | |
2530 | struct drm_modeset_acquire_ctx ctx; | |
2531 | struct drm_atomic_state *state; | |
2532 | int err; | |
2533 | ||
2534 | drm_modeset_acquire_init(&ctx, 0); | |
2535 | ||
2536 | retry: | |
2537 | err = drm_modeset_lock_all_ctx(dev, &ctx); | |
2538 | if (err < 0) { | |
2539 | state = ERR_PTR(err); | |
2540 | goto unlock; | |
2541 | } | |
2542 | ||
2543 | state = drm_atomic_helper_duplicate_state(dev, &ctx); | |
2544 | if (IS_ERR(state)) | |
2545 | goto unlock; | |
2546 | ||
2547 | err = drm_atomic_helper_disable_all(dev, &ctx); | |
2548 | if (err < 0) { | |
0853695c | 2549 | drm_atomic_state_put(state); |
14942760 TR |
2550 | state = ERR_PTR(err); |
2551 | goto unlock; | |
2552 | } | |
2553 | ||
2554 | unlock: | |
2555 | if (PTR_ERR(state) == -EDEADLK) { | |
2556 | drm_modeset_backoff(&ctx); | |
2557 | goto retry; | |
2558 | } | |
2559 | ||
2560 | drm_modeset_drop_locks(&ctx); | |
2561 | drm_modeset_acquire_fini(&ctx); | |
2562 | return state; | |
2563 | } | |
2564 | EXPORT_SYMBOL(drm_atomic_helper_suspend); | |
2565 | ||
581e49fe ML |
2566 | /** |
2567 | * drm_atomic_helper_commit_duplicated_state - commit duplicated state | |
2568 | * @state: duplicated atomic state to commit | |
2569 | * @ctx: pointer to acquire_ctx to use for commit. | |
2570 | * | |
2571 | * The state returned by drm_atomic_helper_duplicate_state() and | |
2572 | * drm_atomic_helper_suspend() is partially invalid, and needs to | |
2573 | * be fixed up before commit. | |
2574 | * | |
2575 | * Returns: | |
2576 | * 0 on success or a negative error code on failure. | |
2577 | * | |
2578 | * See also: | |
2579 | * drm_atomic_helper_suspend() | |
2580 | */ | |
2581 | int drm_atomic_helper_commit_duplicated_state(struct drm_atomic_state *state, | |
2582 | struct drm_modeset_acquire_ctx *ctx) | |
2583 | { | |
2584 | int i; | |
2585 | struct drm_plane *plane; | |
2586 | struct drm_plane_state *plane_state; | |
2587 | struct drm_connector *connector; | |
2588 | struct drm_connector_state *conn_state; | |
2589 | struct drm_crtc *crtc; | |
2590 | struct drm_crtc_state *crtc_state; | |
2591 | ||
2592 | state->acquire_ctx = ctx; | |
2593 | ||
2594 | for_each_new_plane_in_state(state, plane, plane_state, i) | |
2595 | state->planes[i].old_state = plane->state; | |
2596 | ||
2597 | for_each_new_crtc_in_state(state, crtc, crtc_state, i) | |
2598 | state->crtcs[i].old_state = crtc->state; | |
2599 | ||
2600 | for_each_new_connector_in_state(state, connector, conn_state, i) | |
2601 | state->connectors[i].old_state = connector->state; | |
2602 | ||
2603 | return drm_atomic_commit(state); | |
2604 | } | |
2605 | EXPORT_SYMBOL(drm_atomic_helper_commit_duplicated_state); | |
2606 | ||
14942760 TR |
2607 | /** |
2608 | * drm_atomic_helper_resume - subsystem-level resume helper | |
2609 | * @dev: DRM device | |
2610 | * @state: atomic state to resume to | |
2611 | * | |
2612 | * Calls drm_mode_config_reset() to synchronize hardware and software states, | |
2613 | * grabs all modeset locks and commits the atomic state object. This can be | |
2614 | * used in conjunction with the drm_atomic_helper_suspend() helper to | |
2615 | * implement suspend/resume for drivers that support atomic mode-setting. | |
2616 | * | |
2617 | * Returns: | |
2618 | * 0 on success or a negative error code on failure. | |
2619 | * | |
2620 | * See also: | |
2621 | * drm_atomic_helper_suspend() | |
2622 | */ | |
2623 | int drm_atomic_helper_resume(struct drm_device *dev, | |
2624 | struct drm_atomic_state *state) | |
2625 | { | |
2626 | struct drm_mode_config *config = &dev->mode_config; | |
2627 | int err; | |
2628 | ||
2629 | drm_mode_config_reset(dev); | |
581e49fe | 2630 | |
14942760 | 2631 | drm_modeset_lock_all(dev); |
581e49fe | 2632 | err = drm_atomic_helper_commit_duplicated_state(state, config->acquire_ctx); |
14942760 TR |
2633 | drm_modeset_unlock_all(dev); |
2634 | ||
2635 | return err; | |
2636 | } | |
2637 | EXPORT_SYMBOL(drm_atomic_helper_resume); | |
2638 | ||
042652ed | 2639 | /** |
7f50002f | 2640 | * drm_atomic_helper_crtc_set_property - helper for crtc properties |
042652ed DV |
2641 | * @crtc: DRM crtc |
2642 | * @property: DRM property | |
2643 | * @val: value of property | |
2644 | * | |
7f50002f LP |
2645 | * Provides a default crtc set_property handler using the atomic driver |
2646 | * interface. | |
042652ed DV |
2647 | * |
2648 | * RETURNS: | |
2649 | * Zero on success, error code on failure | |
2650 | */ | |
2651 | int | |
2652 | drm_atomic_helper_crtc_set_property(struct drm_crtc *crtc, | |
2653 | struct drm_property *property, | |
2654 | uint64_t val) | |
2655 | { | |
2656 | struct drm_atomic_state *state; | |
2657 | struct drm_crtc_state *crtc_state; | |
2658 | int ret = 0; | |
2659 | ||
2660 | state = drm_atomic_state_alloc(crtc->dev); | |
2661 | if (!state) | |
2662 | return -ENOMEM; | |
2663 | ||
2664 | /* ->set_property is always called with all locks held. */ | |
2665 | state->acquire_ctx = crtc->dev->mode_config.acquire_ctx; | |
2666 | retry: | |
2667 | crtc_state = drm_atomic_get_crtc_state(state, crtc); | |
2668 | if (IS_ERR(crtc_state)) { | |
2669 | ret = PTR_ERR(crtc_state); | |
2670 | goto fail; | |
2671 | } | |
2672 | ||
40ecc694 RC |
2673 | ret = drm_atomic_crtc_set_property(crtc, crtc_state, |
2674 | property, val); | |
042652ed DV |
2675 | if (ret) |
2676 | goto fail; | |
2677 | ||
2678 | ret = drm_atomic_commit(state); | |
042652ed DV |
2679 | fail: |
2680 | if (ret == -EDEADLK) | |
2681 | goto backoff; | |
2682 | ||
0853695c | 2683 | drm_atomic_state_put(state); |
042652ed | 2684 | return ret; |
0853695c | 2685 | |
042652ed | 2686 | backoff: |
042652ed | 2687 | drm_atomic_state_clear(state); |
6f75cea6 | 2688 | drm_atomic_legacy_backoff(state); |
042652ed DV |
2689 | |
2690 | goto retry; | |
2691 | } | |
2692 | EXPORT_SYMBOL(drm_atomic_helper_crtc_set_property); | |
2693 | ||
2694 | /** | |
7f50002f | 2695 | * drm_atomic_helper_plane_set_property - helper for plane properties |
042652ed DV |
2696 | * @plane: DRM plane |
2697 | * @property: DRM property | |
2698 | * @val: value of property | |
2699 | * | |
7f50002f LP |
2700 | * Provides a default plane set_property handler using the atomic driver |
2701 | * interface. | |
042652ed DV |
2702 | * |
2703 | * RETURNS: | |
2704 | * Zero on success, error code on failure | |
2705 | */ | |
2706 | int | |
2707 | drm_atomic_helper_plane_set_property(struct drm_plane *plane, | |
2708 | struct drm_property *property, | |
2709 | uint64_t val) | |
2710 | { | |
2711 | struct drm_atomic_state *state; | |
2712 | struct drm_plane_state *plane_state; | |
2713 | int ret = 0; | |
2714 | ||
2715 | state = drm_atomic_state_alloc(plane->dev); | |
2716 | if (!state) | |
2717 | return -ENOMEM; | |
2718 | ||
2719 | /* ->set_property is always called with all locks held. */ | |
2720 | state->acquire_ctx = plane->dev->mode_config.acquire_ctx; | |
2721 | retry: | |
2722 | plane_state = drm_atomic_get_plane_state(state, plane); | |
2723 | if (IS_ERR(plane_state)) { | |
2724 | ret = PTR_ERR(plane_state); | |
2725 | goto fail; | |
2726 | } | |
2727 | ||
40ecc694 RC |
2728 | ret = drm_atomic_plane_set_property(plane, plane_state, |
2729 | property, val); | |
042652ed DV |
2730 | if (ret) |
2731 | goto fail; | |
2732 | ||
2733 | ret = drm_atomic_commit(state); | |
042652ed DV |
2734 | fail: |
2735 | if (ret == -EDEADLK) | |
2736 | goto backoff; | |
2737 | ||
0853695c | 2738 | drm_atomic_state_put(state); |
042652ed | 2739 | return ret; |
0853695c | 2740 | |
042652ed | 2741 | backoff: |
042652ed | 2742 | drm_atomic_state_clear(state); |
6f75cea6 | 2743 | drm_atomic_legacy_backoff(state); |
042652ed DV |
2744 | |
2745 | goto retry; | |
2746 | } | |
2747 | EXPORT_SYMBOL(drm_atomic_helper_plane_set_property); | |
2748 | ||
2749 | /** | |
7f50002f | 2750 | * drm_atomic_helper_connector_set_property - helper for connector properties |
042652ed DV |
2751 | * @connector: DRM connector |
2752 | * @property: DRM property | |
2753 | * @val: value of property | |
2754 | * | |
7f50002f LP |
2755 | * Provides a default connector set_property handler using the atomic driver |
2756 | * interface. | |
042652ed DV |
2757 | * |
2758 | * RETURNS: | |
2759 | * Zero on success, error code on failure | |
2760 | */ | |
2761 | int | |
2762 | drm_atomic_helper_connector_set_property(struct drm_connector *connector, | |
2763 | struct drm_property *property, | |
2764 | uint64_t val) | |
2765 | { | |
2766 | struct drm_atomic_state *state; | |
2767 | struct drm_connector_state *connector_state; | |
2768 | int ret = 0; | |
2769 | ||
2770 | state = drm_atomic_state_alloc(connector->dev); | |
2771 | if (!state) | |
2772 | return -ENOMEM; | |
2773 | ||
2774 | /* ->set_property is always called with all locks held. */ | |
2775 | state->acquire_ctx = connector->dev->mode_config.acquire_ctx; | |
2776 | retry: | |
2777 | connector_state = drm_atomic_get_connector_state(state, connector); | |
2778 | if (IS_ERR(connector_state)) { | |
2779 | ret = PTR_ERR(connector_state); | |
2780 | goto fail; | |
2781 | } | |
2782 | ||
40ecc694 RC |
2783 | ret = drm_atomic_connector_set_property(connector, connector_state, |
2784 | property, val); | |
042652ed DV |
2785 | if (ret) |
2786 | goto fail; | |
2787 | ||
2788 | ret = drm_atomic_commit(state); | |
042652ed DV |
2789 | fail: |
2790 | if (ret == -EDEADLK) | |
2791 | goto backoff; | |
2792 | ||
0853695c | 2793 | drm_atomic_state_put(state); |
042652ed | 2794 | return ret; |
0853695c | 2795 | |
042652ed | 2796 | backoff: |
042652ed | 2797 | drm_atomic_state_clear(state); |
6f75cea6 | 2798 | drm_atomic_legacy_backoff(state); |
042652ed DV |
2799 | |
2800 | goto retry; | |
2801 | } | |
2802 | EXPORT_SYMBOL(drm_atomic_helper_connector_set_property); | |
8bc0f312 | 2803 | |
f869a6ec AG |
2804 | static int page_flip_common( |
2805 | struct drm_atomic_state *state, | |
2806 | struct drm_crtc *crtc, | |
2807 | struct drm_framebuffer *fb, | |
6cbe5c46 AG |
2808 | struct drm_pending_vblank_event *event, |
2809 | uint32_t flags) | |
f869a6ec AG |
2810 | { |
2811 | struct drm_plane *plane = crtc->primary; | |
2812 | struct drm_plane_state *plane_state; | |
2813 | struct drm_crtc_state *crtc_state; | |
2814 | int ret = 0; | |
2815 | ||
2816 | crtc_state = drm_atomic_get_crtc_state(state, crtc); | |
2817 | if (IS_ERR(crtc_state)) | |
2818 | return PTR_ERR(crtc_state); | |
2819 | ||
2820 | crtc_state->event = event; | |
6cbe5c46 | 2821 | crtc_state->pageflip_flags = flags; |
f869a6ec AG |
2822 | |
2823 | plane_state = drm_atomic_get_plane_state(state, plane); | |
2824 | if (IS_ERR(plane_state)) | |
2825 | return PTR_ERR(plane_state); | |
2826 | ||
f869a6ec AG |
2827 | ret = drm_atomic_set_crtc_for_plane(plane_state, crtc); |
2828 | if (ret != 0) | |
2829 | return ret; | |
2830 | drm_atomic_set_fb_for_plane(plane_state, fb); | |
2831 | ||
2832 | /* Make sure we don't accidentally do a full modeset. */ | |
2833 | state->allow_modeset = false; | |
2834 | if (!crtc_state->active) { | |
6ac7c548 RK |
2835 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] disabled, rejecting legacy flip\n", |
2836 | crtc->base.id, crtc->name); | |
f869a6ec AG |
2837 | return -EINVAL; |
2838 | } | |
2839 | ||
2840 | return ret; | |
2841 | } | |
2842 | ||
8bc0f312 DV |
2843 | /** |
2844 | * drm_atomic_helper_page_flip - execute a legacy page flip | |
2845 | * @crtc: DRM crtc | |
2846 | * @fb: DRM framebuffer | |
2847 | * @event: optional DRM event to signal upon completion | |
2848 | * @flags: flip flags for non-vblank sync'ed updates | |
2849 | * | |
f869a6ec AG |
2850 | * Provides a default &drm_crtc_funcs.page_flip implementation |
2851 | * using the atomic driver interface. | |
8bc0f312 | 2852 | * |
8bc0f312 DV |
2853 | * Returns: |
2854 | * Returns 0 on success, negative errno numbers on failure. | |
f869a6ec AG |
2855 | * |
2856 | * See also: | |
2857 | * drm_atomic_helper_page_flip_target() | |
8bc0f312 DV |
2858 | */ |
2859 | int drm_atomic_helper_page_flip(struct drm_crtc *crtc, | |
2860 | struct drm_framebuffer *fb, | |
2861 | struct drm_pending_vblank_event *event, | |
2862 | uint32_t flags) | |
2863 | { | |
2864 | struct drm_plane *plane = crtc->primary; | |
2865 | struct drm_atomic_state *state; | |
8bc0f312 DV |
2866 | int ret = 0; |
2867 | ||
8bc0f312 DV |
2868 | state = drm_atomic_state_alloc(plane->dev); |
2869 | if (!state) | |
2870 | return -ENOMEM; | |
2871 | ||
2872 | state->acquire_ctx = drm_modeset_legacy_acquire_ctx(crtc); | |
f869a6ec | 2873 | |
8bc0f312 | 2874 | retry: |
6cbe5c46 | 2875 | ret = page_flip_common(state, crtc, fb, event, flags); |
f869a6ec | 2876 | if (ret != 0) |
8bc0f312 | 2877 | goto fail; |
8bc0f312 | 2878 | |
f869a6ec | 2879 | ret = drm_atomic_nonblocking_commit(state); |
8bc0f312 | 2880 | |
f869a6ec AG |
2881 | fail: |
2882 | if (ret == -EDEADLK) | |
2883 | goto backoff; | |
2884 | ||
2885 | drm_atomic_state_put(state); | |
2886 | return ret; | |
2887 | ||
2888 | backoff: | |
2889 | drm_atomic_state_clear(state); | |
2890 | drm_atomic_legacy_backoff(state); | |
2891 | ||
2892 | /* | |
2893 | * Someone might have exchanged the framebuffer while we dropped locks | |
2894 | * in the backoff code. We need to fix up the fb refcount tracking the | |
2895 | * core does for us. | |
2896 | */ | |
2897 | plane->old_fb = plane->fb; | |
2898 | ||
2899 | goto retry; | |
2900 | } | |
2901 | EXPORT_SYMBOL(drm_atomic_helper_page_flip); | |
2902 | ||
2903 | /** | |
2904 | * drm_atomic_helper_page_flip_target - do page flip on target vblank period. | |
2905 | * @crtc: DRM crtc | |
2906 | * @fb: DRM framebuffer | |
2907 | * @event: optional DRM event to signal upon completion | |
2908 | * @flags: flip flags for non-vblank sync'ed updates | |
2909 | * @target: specifying the target vblank period when the flip to take effect | |
2910 | * | |
2911 | * Provides a default &drm_crtc_funcs.page_flip_target implementation. | |
2912 | * Similar to drm_atomic_helper_page_flip() with extra parameter to specify | |
2913 | * target vblank period to flip. | |
2914 | * | |
2915 | * Returns: | |
2916 | * Returns 0 on success, negative errno numbers on failure. | |
2917 | */ | |
2918 | int drm_atomic_helper_page_flip_target( | |
2919 | struct drm_crtc *crtc, | |
2920 | struct drm_framebuffer *fb, | |
2921 | struct drm_pending_vblank_event *event, | |
2922 | uint32_t flags, | |
2923 | uint32_t target) | |
2924 | { | |
2925 | struct drm_plane *plane = crtc->primary; | |
2926 | struct drm_atomic_state *state; | |
2927 | struct drm_crtc_state *crtc_state; | |
2928 | int ret = 0; | |
2929 | ||
f869a6ec AG |
2930 | state = drm_atomic_state_alloc(plane->dev); |
2931 | if (!state) | |
2932 | return -ENOMEM; | |
2933 | ||
2934 | state->acquire_ctx = drm_modeset_legacy_acquire_ctx(crtc); | |
2935 | ||
2936 | retry: | |
6cbe5c46 | 2937 | ret = page_flip_common(state, crtc, fb, event, flags); |
8bc0f312 DV |
2938 | if (ret != 0) |
2939 | goto fail; | |
8bc0f312 | 2940 | |
f869a6ec AG |
2941 | crtc_state = drm_atomic_get_existing_crtc_state(state, crtc); |
2942 | if (WARN_ON(!crtc_state)) { | |
4cba6850 DV |
2943 | ret = -EINVAL; |
2944 | goto fail; | |
2945 | } | |
f869a6ec | 2946 | crtc_state->target_vblank = target; |
4cba6850 | 2947 | |
b837ba0a | 2948 | ret = drm_atomic_nonblocking_commit(state); |
f869a6ec | 2949 | |
8bc0f312 DV |
2950 | fail: |
2951 | if (ret == -EDEADLK) | |
2952 | goto backoff; | |
2953 | ||
0853695c | 2954 | drm_atomic_state_put(state); |
8bc0f312 | 2955 | return ret; |
0853695c | 2956 | |
8bc0f312 | 2957 | backoff: |
8bc0f312 | 2958 | drm_atomic_state_clear(state); |
6f75cea6 | 2959 | drm_atomic_legacy_backoff(state); |
8bc0f312 DV |
2960 | |
2961 | /* | |
2962 | * Someone might have exchanged the framebuffer while we dropped locks | |
2963 | * in the backoff code. We need to fix up the fb refcount tracking the | |
2964 | * core does for us. | |
2965 | */ | |
2966 | plane->old_fb = plane->fb; | |
2967 | ||
2968 | goto retry; | |
2969 | } | |
f869a6ec | 2970 | EXPORT_SYMBOL(drm_atomic_helper_page_flip_target); |
d461701c | 2971 | |
b486e0e6 DV |
2972 | /** |
2973 | * drm_atomic_helper_connector_dpms() - connector dpms helper implementation | |
2974 | * @connector: affected connector | |
2975 | * @mode: DPMS mode | |
2976 | * | |
2977 | * This is the main helper function provided by the atomic helper framework for | |
2978 | * implementing the legacy DPMS connector interface. It computes the new desired | |
6806cdf9 DV |
2979 | * &drm_crtc_state.active state for the corresponding CRTC (if the connector is |
2980 | * enabled) and updates it. | |
9a69a9ac ML |
2981 | * |
2982 | * Returns: | |
2983 | * Returns 0 on success, negative errno numbers on failure. | |
b486e0e6 | 2984 | */ |
9a69a9ac ML |
2985 | int drm_atomic_helper_connector_dpms(struct drm_connector *connector, |
2986 | int mode) | |
b486e0e6 DV |
2987 | { |
2988 | struct drm_mode_config *config = &connector->dev->mode_config; | |
2989 | struct drm_atomic_state *state; | |
2990 | struct drm_crtc_state *crtc_state; | |
2991 | struct drm_crtc *crtc; | |
2992 | struct drm_connector *tmp_connector; | |
c36a3254 | 2993 | struct drm_connector_list_iter conn_iter; |
b486e0e6 DV |
2994 | int ret; |
2995 | bool active = false; | |
9a69a9ac | 2996 | int old_mode = connector->dpms; |
b486e0e6 DV |
2997 | |
2998 | if (mode != DRM_MODE_DPMS_ON) | |
2999 | mode = DRM_MODE_DPMS_OFF; | |
3000 | ||
3001 | connector->dpms = mode; | |
3002 | crtc = connector->state->crtc; | |
3003 | ||
3004 | if (!crtc) | |
9a69a9ac | 3005 | return 0; |
b486e0e6 | 3006 | |
b486e0e6 DV |
3007 | state = drm_atomic_state_alloc(connector->dev); |
3008 | if (!state) | |
9a69a9ac | 3009 | return -ENOMEM; |
b486e0e6 DV |
3010 | |
3011 | state->acquire_ctx = drm_modeset_legacy_acquire_ctx(crtc); | |
3012 | retry: | |
3013 | crtc_state = drm_atomic_get_crtc_state(state, crtc); | |
9a69a9ac ML |
3014 | if (IS_ERR(crtc_state)) { |
3015 | ret = PTR_ERR(crtc_state); | |
3016 | goto fail; | |
3017 | } | |
b486e0e6 DV |
3018 | |
3019 | WARN_ON(!drm_modeset_is_locked(&config->connection_mutex)); | |
3020 | ||
c36a3254 DV |
3021 | drm_connector_list_iter_get(connector->dev, &conn_iter); |
3022 | drm_for_each_connector_iter(tmp_connector, &conn_iter) { | |
0388df05 | 3023 | if (tmp_connector->state->crtc != crtc) |
b486e0e6 DV |
3024 | continue; |
3025 | ||
0388df05 | 3026 | if (tmp_connector->dpms == DRM_MODE_DPMS_ON) { |
b486e0e6 DV |
3027 | active = true; |
3028 | break; | |
3029 | } | |
3030 | } | |
c36a3254 | 3031 | drm_connector_list_iter_put(&conn_iter); |
b486e0e6 DV |
3032 | crtc_state->active = active; |
3033 | ||
3034 | ret = drm_atomic_commit(state); | |
b486e0e6 DV |
3035 | fail: |
3036 | if (ret == -EDEADLK) | |
3037 | goto backoff; | |
8f5040e4 ML |
3038 | if (ret != 0) |
3039 | connector->dpms = old_mode; | |
0853695c | 3040 | drm_atomic_state_put(state); |
9a69a9ac | 3041 | return ret; |
0853695c | 3042 | |
b486e0e6 DV |
3043 | backoff: |
3044 | drm_atomic_state_clear(state); | |
3045 | drm_atomic_legacy_backoff(state); | |
3046 | ||
3047 | goto retry; | |
3048 | } | |
3049 | EXPORT_SYMBOL(drm_atomic_helper_connector_dpms); | |
3050 | ||
9ecb5498 | 3051 | /** |
6806cdf9 DV |
3052 | * drm_atomic_helper_best_encoder - Helper for |
3053 | * &drm_connector_helper_funcs.best_encoder callback | |
9ecb5498 NT |
3054 | * @connector: Connector control structure |
3055 | * | |
6806cdf9 | 3056 | * This is a &drm_connector_helper_funcs.best_encoder callback helper for |
9ecb5498 NT |
3057 | * connectors that support exactly 1 encoder, statically determined at driver |
3058 | * init time. | |
3059 | */ | |
3060 | struct drm_encoder * | |
3061 | drm_atomic_helper_best_encoder(struct drm_connector *connector) | |
3062 | { | |
3063 | WARN_ON(connector->encoder_ids[1]); | |
3064 | return drm_encoder_find(connector->dev, connector->encoder_ids[0]); | |
3065 | } | |
3066 | EXPORT_SYMBOL(drm_atomic_helper_best_encoder); | |
3067 | ||
3150c7d0 DV |
3068 | /** |
3069 | * DOC: atomic state reset and initialization | |
3070 | * | |
3071 | * Both the drm core and the atomic helpers assume that there is always the full | |
3072 | * and correct atomic software state for all connectors, CRTCs and planes | |
3073 | * available. Which is a bit a problem on driver load and also after system | |
3074 | * suspend. One way to solve this is to have a hardware state read-out | |
3075 | * infrastructure which reconstructs the full software state (e.g. the i915 | |
3076 | * driver). | |
3077 | * | |
3078 | * The simpler solution is to just reset the software state to everything off, | |
3079 | * which is easiest to do by calling drm_mode_config_reset(). To facilitate this | |
3080 | * the atomic helpers provide default reset implementations for all hooks. | |
7f8ee3e5 DV |
3081 | * |
3082 | * On the upside the precise state tracking of atomic simplifies system suspend | |
3083 | * and resume a lot. For drivers using drm_mode_config_reset() a complete recipe | |
3084 | * is implemented in drm_atomic_helper_suspend() and drm_atomic_helper_resume(). | |
3085 | * For other drivers the building blocks are split out, see the documentation | |
3086 | * for these functions. | |
3150c7d0 DV |
3087 | */ |
3088 | ||
d461701c | 3089 | /** |
6806cdf9 | 3090 | * drm_atomic_helper_crtc_reset - default &drm_crtc_funcs.reset hook for CRTCs |
d461701c DV |
3091 | * @crtc: drm CRTC |
3092 | * | |
3093 | * Resets the atomic state for @crtc by freeing the state pointer (which might | |
3094 | * be NULL, e.g. at driver load time) and allocating a new empty state object. | |
3095 | */ | |
3096 | void drm_atomic_helper_crtc_reset(struct drm_crtc *crtc) | |
3097 | { | |
b0b5511b | 3098 | if (crtc->state) |
ec2dc6a0 | 3099 | __drm_atomic_helper_crtc_destroy_state(crtc->state); |
b0b5511b | 3100 | |
d461701c DV |
3101 | kfree(crtc->state); |
3102 | crtc->state = kzalloc(sizeof(*crtc->state), GFP_KERNEL); | |
07cc0ef6 DV |
3103 | |
3104 | if (crtc->state) | |
3105 | crtc->state->crtc = crtc; | |
d461701c DV |
3106 | } |
3107 | EXPORT_SYMBOL(drm_atomic_helper_crtc_reset); | |
3108 | ||
f5e7840b TR |
3109 | /** |
3110 | * __drm_atomic_helper_crtc_duplicate_state - copy atomic CRTC state | |
3111 | * @crtc: CRTC object | |
3112 | * @state: atomic CRTC state | |
3113 | * | |
3114 | * Copies atomic state from a CRTC's current state and resets inferred values. | |
3115 | * This is useful for drivers that subclass the CRTC state. | |
3116 | */ | |
3117 | void __drm_atomic_helper_crtc_duplicate_state(struct drm_crtc *crtc, | |
3118 | struct drm_crtc_state *state) | |
3119 | { | |
3120 | memcpy(state, crtc->state, sizeof(*state)); | |
3121 | ||
99cf4a29 | 3122 | if (state->mode_blob) |
6472e509 | 3123 | drm_property_blob_get(state->mode_blob); |
5488dc16 | 3124 | if (state->degamma_lut) |
6472e509 | 3125 | drm_property_blob_get(state->degamma_lut); |
5488dc16 | 3126 | if (state->ctm) |
6472e509 | 3127 | drm_property_blob_get(state->ctm); |
5488dc16 | 3128 | if (state->gamma_lut) |
6472e509 | 3129 | drm_property_blob_get(state->gamma_lut); |
f5e7840b TR |
3130 | state->mode_changed = false; |
3131 | state->active_changed = false; | |
3132 | state->planes_changed = false; | |
fc596660 | 3133 | state->connectors_changed = false; |
5488dc16 | 3134 | state->color_mgmt_changed = false; |
44d1240d | 3135 | state->zpos_changed = false; |
f5e7840b | 3136 | state->event = NULL; |
6cbe5c46 | 3137 | state->pageflip_flags = 0; |
f5e7840b TR |
3138 | } |
3139 | EXPORT_SYMBOL(__drm_atomic_helper_crtc_duplicate_state); | |
3140 | ||
d461701c DV |
3141 | /** |
3142 | * drm_atomic_helper_crtc_duplicate_state - default state duplicate hook | |
3143 | * @crtc: drm CRTC | |
3144 | * | |
3145 | * Default CRTC state duplicate hook for drivers which don't have their own | |
3146 | * subclassed CRTC state structure. | |
3147 | */ | |
3148 | struct drm_crtc_state * | |
3149 | drm_atomic_helper_crtc_duplicate_state(struct drm_crtc *crtc) | |
3150 | { | |
3151 | struct drm_crtc_state *state; | |
3152 | ||
3153 | if (WARN_ON(!crtc->state)) | |
3154 | return NULL; | |
3155 | ||
f5e7840b TR |
3156 | state = kmalloc(sizeof(*state), GFP_KERNEL); |
3157 | if (state) | |
3158 | __drm_atomic_helper_crtc_duplicate_state(crtc, state); | |
d461701c DV |
3159 | |
3160 | return state; | |
3161 | } | |
3162 | EXPORT_SYMBOL(drm_atomic_helper_crtc_duplicate_state); | |
3163 | ||
f5e7840b TR |
3164 | /** |
3165 | * __drm_atomic_helper_crtc_destroy_state - release CRTC state | |
f5e7840b TR |
3166 | * @state: CRTC state object to release |
3167 | * | |
3168 | * Releases all resources stored in the CRTC state without actually freeing | |
3169 | * the memory of the CRTC state. This is useful for drivers that subclass the | |
3170 | * CRTC state. | |
3171 | */ | |
ec2dc6a0 | 3172 | void __drm_atomic_helper_crtc_destroy_state(struct drm_crtc_state *state) |
f5e7840b | 3173 | { |
6472e509 TR |
3174 | drm_property_blob_put(state->mode_blob); |
3175 | drm_property_blob_put(state->degamma_lut); | |
3176 | drm_property_blob_put(state->ctm); | |
3177 | drm_property_blob_put(state->gamma_lut); | |
f5e7840b TR |
3178 | } |
3179 | EXPORT_SYMBOL(__drm_atomic_helper_crtc_destroy_state); | |
3180 | ||
d461701c DV |
3181 | /** |
3182 | * drm_atomic_helper_crtc_destroy_state - default state destroy hook | |
3183 | * @crtc: drm CRTC | |
3184 | * @state: CRTC state object to release | |
3185 | * | |
3186 | * Default CRTC state destroy hook for drivers which don't have their own | |
3187 | * subclassed CRTC state structure. | |
3188 | */ | |
3189 | void drm_atomic_helper_crtc_destroy_state(struct drm_crtc *crtc, | |
3190 | struct drm_crtc_state *state) | |
3191 | { | |
ec2dc6a0 | 3192 | __drm_atomic_helper_crtc_destroy_state(state); |
d461701c DV |
3193 | kfree(state); |
3194 | } | |
3195 | EXPORT_SYMBOL(drm_atomic_helper_crtc_destroy_state); | |
3196 | ||
3197 | /** | |
6806cdf9 | 3198 | * drm_atomic_helper_plane_reset - default &drm_plane_funcs.reset hook for planes |
d461701c DV |
3199 | * @plane: drm plane |
3200 | * | |
3201 | * Resets the atomic state for @plane by freeing the state pointer (which might | |
3202 | * be NULL, e.g. at driver load time) and allocating a new empty state object. | |
3203 | */ | |
3204 | void drm_atomic_helper_plane_reset(struct drm_plane *plane) | |
3205 | { | |
b0b5511b | 3206 | if (plane->state) |
2f701695 | 3207 | __drm_atomic_helper_plane_destroy_state(plane->state); |
321ebf04 | 3208 | |
d461701c DV |
3209 | kfree(plane->state); |
3210 | plane->state = kzalloc(sizeof(*plane->state), GFP_KERNEL); | |
07cc0ef6 | 3211 | |
25aaa3a1 | 3212 | if (plane->state) { |
07cc0ef6 | 3213 | plane->state->plane = plane; |
31ad61e4 | 3214 | plane->state->rotation = DRM_ROTATE_0; |
25aaa3a1 | 3215 | } |
d461701c DV |
3216 | } |
3217 | EXPORT_SYMBOL(drm_atomic_helper_plane_reset); | |
3218 | ||
f5e7840b TR |
3219 | /** |
3220 | * __drm_atomic_helper_plane_duplicate_state - copy atomic plane state | |
3221 | * @plane: plane object | |
3222 | * @state: atomic plane state | |
3223 | * | |
3224 | * Copies atomic state from a plane's current state. This is useful for | |
3225 | * drivers that subclass the plane state. | |
3226 | */ | |
3227 | void __drm_atomic_helper_plane_duplicate_state(struct drm_plane *plane, | |
3228 | struct drm_plane_state *state) | |
3229 | { | |
3230 | memcpy(state, plane->state, sizeof(*state)); | |
3231 | ||
3232 | if (state->fb) | |
a4a69da0 | 3233 | drm_framebuffer_get(state->fb); |
96260142 GP |
3234 | |
3235 | state->fence = NULL; | |
f5e7840b TR |
3236 | } |
3237 | EXPORT_SYMBOL(__drm_atomic_helper_plane_duplicate_state); | |
3238 | ||
d461701c DV |
3239 | /** |
3240 | * drm_atomic_helper_plane_duplicate_state - default state duplicate hook | |
3241 | * @plane: drm plane | |
3242 | * | |
3243 | * Default plane state duplicate hook for drivers which don't have their own | |
3244 | * subclassed plane state structure. | |
3245 | */ | |
3246 | struct drm_plane_state * | |
3247 | drm_atomic_helper_plane_duplicate_state(struct drm_plane *plane) | |
3248 | { | |
321ebf04 DV |
3249 | struct drm_plane_state *state; |
3250 | ||
d461701c DV |
3251 | if (WARN_ON(!plane->state)) |
3252 | return NULL; | |
3253 | ||
f5e7840b TR |
3254 | state = kmalloc(sizeof(*state), GFP_KERNEL); |
3255 | if (state) | |
3256 | __drm_atomic_helper_plane_duplicate_state(plane, state); | |
321ebf04 DV |
3257 | |
3258 | return state; | |
d461701c DV |
3259 | } |
3260 | EXPORT_SYMBOL(drm_atomic_helper_plane_duplicate_state); | |
3261 | ||
f5e7840b TR |
3262 | /** |
3263 | * __drm_atomic_helper_plane_destroy_state - release plane state | |
f5e7840b TR |
3264 | * @state: plane state object to release |
3265 | * | |
3266 | * Releases all resources stored in the plane state without actually freeing | |
3267 | * the memory of the plane state. This is useful for drivers that subclass the | |
3268 | * plane state. | |
3269 | */ | |
2f701695 | 3270 | void __drm_atomic_helper_plane_destroy_state(struct drm_plane_state *state) |
f5e7840b TR |
3271 | { |
3272 | if (state->fb) | |
a4a69da0 | 3273 | drm_framebuffer_put(state->fb); |
96260142 GP |
3274 | |
3275 | if (state->fence) | |
3276 | dma_fence_put(state->fence); | |
f5e7840b TR |
3277 | } |
3278 | EXPORT_SYMBOL(__drm_atomic_helper_plane_destroy_state); | |
3279 | ||
d461701c DV |
3280 | /** |
3281 | * drm_atomic_helper_plane_destroy_state - default state destroy hook | |
3282 | * @plane: drm plane | |
3283 | * @state: plane state object to release | |
3284 | * | |
3285 | * Default plane state destroy hook for drivers which don't have their own | |
3286 | * subclassed plane state structure. | |
3287 | */ | |
3288 | void drm_atomic_helper_plane_destroy_state(struct drm_plane *plane, | |
321ebf04 | 3289 | struct drm_plane_state *state) |
d461701c | 3290 | { |
2f701695 | 3291 | __drm_atomic_helper_plane_destroy_state(state); |
d461701c DV |
3292 | kfree(state); |
3293 | } | |
3294 | EXPORT_SYMBOL(drm_atomic_helper_plane_destroy_state); | |
3295 | ||
4cd39917 ML |
3296 | /** |
3297 | * __drm_atomic_helper_connector_reset - reset state on connector | |
3298 | * @connector: drm connector | |
3299 | * @conn_state: connector state to assign | |
3300 | * | |
3301 | * Initializes the newly allocated @conn_state and assigns it to | |
6806cdf9 DV |
3302 | * the &drm_conector->state pointer of @connector, usually required when |
3303 | * initializing the drivers or when called from the &drm_connector_funcs.reset | |
3304 | * hook. | |
4cd39917 ML |
3305 | * |
3306 | * This is useful for drivers that subclass the connector state. | |
3307 | */ | |
3308 | void | |
3309 | __drm_atomic_helper_connector_reset(struct drm_connector *connector, | |
3310 | struct drm_connector_state *conn_state) | |
3311 | { | |
3312 | if (conn_state) | |
3313 | conn_state->connector = connector; | |
3314 | ||
3315 | connector->state = conn_state; | |
3316 | } | |
3317 | EXPORT_SYMBOL(__drm_atomic_helper_connector_reset); | |
3318 | ||
d461701c | 3319 | /** |
6806cdf9 | 3320 | * drm_atomic_helper_connector_reset - default &drm_connector_funcs.reset hook for connectors |
d461701c DV |
3321 | * @connector: drm connector |
3322 | * | |
3323 | * Resets the atomic state for @connector by freeing the state pointer (which | |
3324 | * might be NULL, e.g. at driver load time) and allocating a new empty state | |
3325 | * object. | |
3326 | */ | |
3327 | void drm_atomic_helper_connector_reset(struct drm_connector *connector) | |
3328 | { | |
4cd39917 ML |
3329 | struct drm_connector_state *conn_state = |
3330 | kzalloc(sizeof(*conn_state), GFP_KERNEL); | |
07cc0ef6 | 3331 | |
b0b5511b | 3332 | if (connector->state) |
fabd9106 | 3333 | __drm_atomic_helper_connector_destroy_state(connector->state); |
b0b5511b | 3334 | |
4cd39917 ML |
3335 | kfree(connector->state); |
3336 | __drm_atomic_helper_connector_reset(connector, conn_state); | |
d461701c DV |
3337 | } |
3338 | EXPORT_SYMBOL(drm_atomic_helper_connector_reset); | |
3339 | ||
f5e7840b TR |
3340 | /** |
3341 | * __drm_atomic_helper_connector_duplicate_state - copy atomic connector state | |
3342 | * @connector: connector object | |
3343 | * @state: atomic connector state | |
3344 | * | |
3345 | * Copies atomic state from a connector's current state. This is useful for | |
3346 | * drivers that subclass the connector state. | |
3347 | */ | |
3348 | void | |
3349 | __drm_atomic_helper_connector_duplicate_state(struct drm_connector *connector, | |
3350 | struct drm_connector_state *state) | |
3351 | { | |
3352 | memcpy(state, connector->state, sizeof(*state)); | |
d2307dea | 3353 | if (state->crtc) |
ad093607 | 3354 | drm_connector_get(connector); |
f5e7840b TR |
3355 | } |
3356 | EXPORT_SYMBOL(__drm_atomic_helper_connector_duplicate_state); | |
3357 | ||
d461701c DV |
3358 | /** |
3359 | * drm_atomic_helper_connector_duplicate_state - default state duplicate hook | |
3360 | * @connector: drm connector | |
3361 | * | |
3362 | * Default connector state duplicate hook for drivers which don't have their own | |
3363 | * subclassed connector state structure. | |
3364 | */ | |
3365 | struct drm_connector_state * | |
3366 | drm_atomic_helper_connector_duplicate_state(struct drm_connector *connector) | |
3367 | { | |
f5e7840b TR |
3368 | struct drm_connector_state *state; |
3369 | ||
d461701c DV |
3370 | if (WARN_ON(!connector->state)) |
3371 | return NULL; | |
3372 | ||
f5e7840b TR |
3373 | state = kmalloc(sizeof(*state), GFP_KERNEL); |
3374 | if (state) | |
3375 | __drm_atomic_helper_connector_duplicate_state(connector, state); | |
3376 | ||
3377 | return state; | |
d461701c DV |
3378 | } |
3379 | EXPORT_SYMBOL(drm_atomic_helper_connector_duplicate_state); | |
3380 | ||
397fd77c TR |
3381 | /** |
3382 | * drm_atomic_helper_duplicate_state - duplicate an atomic state object | |
3383 | * @dev: DRM device | |
3384 | * @ctx: lock acquisition context | |
3385 | * | |
3386 | * Makes a copy of the current atomic state by looping over all objects and | |
14942760 TR |
3387 | * duplicating their respective states. This is used for example by suspend/ |
3388 | * resume support code to save the state prior to suspend such that it can | |
3389 | * be restored upon resume. | |
397fd77c TR |
3390 | * |
3391 | * Note that this treats atomic state as persistent between save and restore. | |
3392 | * Drivers must make sure that this is possible and won't result in confusion | |
3393 | * or erroneous behaviour. | |
3394 | * | |
3395 | * Note that if callers haven't already acquired all modeset locks this might | |
3396 | * return -EDEADLK, which must be handled by calling drm_modeset_backoff(). | |
3397 | * | |
3398 | * Returns: | |
3399 | * A pointer to the copy of the atomic state object on success or an | |
3400 | * ERR_PTR()-encoded error code on failure. | |
14942760 TR |
3401 | * |
3402 | * See also: | |
3403 | * drm_atomic_helper_suspend(), drm_atomic_helper_resume() | |
397fd77c TR |
3404 | */ |
3405 | struct drm_atomic_state * | |
3406 | drm_atomic_helper_duplicate_state(struct drm_device *dev, | |
3407 | struct drm_modeset_acquire_ctx *ctx) | |
3408 | { | |
3409 | struct drm_atomic_state *state; | |
3410 | struct drm_connector *conn; | |
c36a3254 | 3411 | struct drm_connector_list_iter conn_iter; |
397fd77c TR |
3412 | struct drm_plane *plane; |
3413 | struct drm_crtc *crtc; | |
3414 | int err = 0; | |
3415 | ||
3416 | state = drm_atomic_state_alloc(dev); | |
3417 | if (!state) | |
3418 | return ERR_PTR(-ENOMEM); | |
3419 | ||
3420 | state->acquire_ctx = ctx; | |
3421 | ||
3422 | drm_for_each_crtc(crtc, dev) { | |
3423 | struct drm_crtc_state *crtc_state; | |
3424 | ||
3425 | crtc_state = drm_atomic_get_crtc_state(state, crtc); | |
3426 | if (IS_ERR(crtc_state)) { | |
3427 | err = PTR_ERR(crtc_state); | |
3428 | goto free; | |
3429 | } | |
3430 | } | |
3431 | ||
3432 | drm_for_each_plane(plane, dev) { | |
3433 | struct drm_plane_state *plane_state; | |
3434 | ||
3435 | plane_state = drm_atomic_get_plane_state(state, plane); | |
3436 | if (IS_ERR(plane_state)) { | |
3437 | err = PTR_ERR(plane_state); | |
3438 | goto free; | |
3439 | } | |
3440 | } | |
3441 | ||
c36a3254 DV |
3442 | drm_connector_list_iter_get(dev, &conn_iter); |
3443 | drm_for_each_connector_iter(conn, &conn_iter) { | |
397fd77c TR |
3444 | struct drm_connector_state *conn_state; |
3445 | ||
3446 | conn_state = drm_atomic_get_connector_state(state, conn); | |
3447 | if (IS_ERR(conn_state)) { | |
3448 | err = PTR_ERR(conn_state); | |
c36a3254 | 3449 | drm_connector_list_iter_put(&conn_iter); |
397fd77c TR |
3450 | goto free; |
3451 | } | |
3452 | } | |
c36a3254 | 3453 | drm_connector_list_iter_put(&conn_iter); |
397fd77c TR |
3454 | |
3455 | /* clear the acquire context so that it isn't accidentally reused */ | |
3456 | state->acquire_ctx = NULL; | |
3457 | ||
3458 | free: | |
3459 | if (err < 0) { | |
0853695c | 3460 | drm_atomic_state_put(state); |
397fd77c TR |
3461 | state = ERR_PTR(err); |
3462 | } | |
3463 | ||
3464 | return state; | |
3465 | } | |
3466 | EXPORT_SYMBOL(drm_atomic_helper_duplicate_state); | |
3467 | ||
f5e7840b TR |
3468 | /** |
3469 | * __drm_atomic_helper_connector_destroy_state - release connector state | |
f5e7840b TR |
3470 | * @state: connector state object to release |
3471 | * | |
3472 | * Releases all resources stored in the connector state without actually | |
3473 | * freeing the memory of the connector state. This is useful for drivers that | |
3474 | * subclass the connector state. | |
3475 | */ | |
3476 | void | |
fabd9106 | 3477 | __drm_atomic_helper_connector_destroy_state(struct drm_connector_state *state) |
f5e7840b | 3478 | { |
d2307dea | 3479 | if (state->crtc) |
ad093607 | 3480 | drm_connector_put(state->connector); |
f5e7840b TR |
3481 | } |
3482 | EXPORT_SYMBOL(__drm_atomic_helper_connector_destroy_state); | |
3483 | ||
d461701c DV |
3484 | /** |
3485 | * drm_atomic_helper_connector_destroy_state - default state destroy hook | |
3486 | * @connector: drm connector | |
3487 | * @state: connector state object to release | |
3488 | * | |
3489 | * Default connector state destroy hook for drivers which don't have their own | |
3490 | * subclassed connector state structure. | |
3491 | */ | |
3492 | void drm_atomic_helper_connector_destroy_state(struct drm_connector *connector, | |
3493 | struct drm_connector_state *state) | |
3494 | { | |
fabd9106 | 3495 | __drm_atomic_helper_connector_destroy_state(state); |
d461701c DV |
3496 | kfree(state); |
3497 | } | |
3498 | EXPORT_SYMBOL(drm_atomic_helper_connector_destroy_state); | |
5488dc16 LL |
3499 | |
3500 | /** | |
3501 | * drm_atomic_helper_legacy_gamma_set - set the legacy gamma correction table | |
3502 | * @crtc: CRTC object | |
3503 | * @red: red correction table | |
3504 | * @green: green correction table | |
3505 | * @blue: green correction table | |
5488dc16 LL |
3506 | * @size: size of the tables |
3507 | * | |
3508 | * Implements support for legacy gamma correction table for drivers | |
3509 | * that support color management through the DEGAMMA_LUT/GAMMA_LUT | |
3510 | * properties. | |
3511 | */ | |
7ea77283 ML |
3512 | int drm_atomic_helper_legacy_gamma_set(struct drm_crtc *crtc, |
3513 | u16 *red, u16 *green, u16 *blue, | |
3514 | uint32_t size) | |
5488dc16 LL |
3515 | { |
3516 | struct drm_device *dev = crtc->dev; | |
3517 | struct drm_mode_config *config = &dev->mode_config; | |
3518 | struct drm_atomic_state *state; | |
3519 | struct drm_crtc_state *crtc_state; | |
3520 | struct drm_property_blob *blob = NULL; | |
3521 | struct drm_color_lut *blob_data; | |
3522 | int i, ret = 0; | |
3523 | ||
3524 | state = drm_atomic_state_alloc(crtc->dev); | |
3525 | if (!state) | |
7ea77283 | 3526 | return -ENOMEM; |
5488dc16 LL |
3527 | |
3528 | blob = drm_property_create_blob(dev, | |
3529 | sizeof(struct drm_color_lut) * size, | |
3530 | NULL); | |
562c5b4d LL |
3531 | if (IS_ERR(blob)) { |
3532 | ret = PTR_ERR(blob); | |
c1f415c9 | 3533 | blob = NULL; |
5488dc16 LL |
3534 | goto fail; |
3535 | } | |
3536 | ||
3537 | /* Prepare GAMMA_LUT with the legacy values. */ | |
3538 | blob_data = (struct drm_color_lut *) blob->data; | |
3539 | for (i = 0; i < size; i++) { | |
3540 | blob_data[i].red = red[i]; | |
3541 | blob_data[i].green = green[i]; | |
3542 | blob_data[i].blue = blue[i]; | |
3543 | } | |
3544 | ||
3545 | state->acquire_ctx = crtc->dev->mode_config.acquire_ctx; | |
3546 | retry: | |
3547 | crtc_state = drm_atomic_get_crtc_state(state, crtc); | |
3548 | if (IS_ERR(crtc_state)) { | |
3549 | ret = PTR_ERR(crtc_state); | |
3550 | goto fail; | |
3551 | } | |
3552 | ||
3553 | /* Reset DEGAMMA_LUT and CTM properties. */ | |
3554 | ret = drm_atomic_crtc_set_property(crtc, crtc_state, | |
3555 | config->degamma_lut_property, 0); | |
3556 | if (ret) | |
3557 | goto fail; | |
3558 | ||
3559 | ret = drm_atomic_crtc_set_property(crtc, crtc_state, | |
3560 | config->ctm_property, 0); | |
3561 | if (ret) | |
3562 | goto fail; | |
3563 | ||
3564 | ret = drm_atomic_crtc_set_property(crtc, crtc_state, | |
3565 | config->gamma_lut_property, blob->base.id); | |
3566 | if (ret) | |
3567 | goto fail; | |
3568 | ||
3569 | ret = drm_atomic_commit(state); | |
5488dc16 LL |
3570 | fail: |
3571 | if (ret == -EDEADLK) | |
3572 | goto backoff; | |
3573 | ||
0853695c | 3574 | drm_atomic_state_put(state); |
6472e509 | 3575 | drm_property_blob_put(blob); |
7ea77283 | 3576 | return ret; |
0853695c | 3577 | |
5488dc16 LL |
3578 | backoff: |
3579 | drm_atomic_state_clear(state); | |
3580 | drm_atomic_legacy_backoff(state); | |
3581 | ||
3582 | goto retry; | |
3583 | } | |
3584 | EXPORT_SYMBOL(drm_atomic_helper_legacy_gamma_set); |