Commit | Line | Data |
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c2fcd274 DV |
1 | /* |
2 | * Copyright (C) 2014 Red Hat | |
3 | * Copyright (C) 2014 Intel Corp. | |
4 | * | |
5 | * Permission is hereby granted, free of charge, to any person obtaining a | |
6 | * copy of this software and associated documentation files (the "Software"), | |
7 | * to deal in the Software without restriction, including without limitation | |
8 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
9 | * and/or sell copies of the Software, and to permit persons to whom the | |
10 | * Software is furnished to do so, subject to the following conditions: | |
11 | * | |
12 | * The above copyright notice and this permission notice shall be included in | |
13 | * all copies or substantial portions of the Software. | |
14 | * | |
15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
18 | * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR | |
19 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, | |
20 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR | |
21 | * OTHER DEALINGS IN THE SOFTWARE. | |
22 | * | |
23 | * Authors: | |
24 | * Rob Clark <robdclark@gmail.com> | |
25 | * Daniel Vetter <daniel.vetter@ffwll.ch> | |
26 | */ | |
27 | ||
28 | #include <drm/drmP.h> | |
29 | #include <drm/drm_atomic.h> | |
72fdb40c | 30 | #include <drm/drm_atomic_uapi.h> |
c2fcd274 DV |
31 | #include <drm/drm_plane_helper.h> |
32 | #include <drm/drm_crtc_helper.h> | |
623369e5 | 33 | #include <drm/drm_atomic_helper.h> |
935774cd | 34 | #include <drm/drm_writeback.h> |
f54d1867 | 35 | #include <linux/dma-fence.h> |
c2fcd274 | 36 | |
faf94a08 | 37 | #include "drm_crtc_helper_internal.h" |
44d1240d MS |
38 | #include "drm_crtc_internal.h" |
39 | ||
3150c7d0 DV |
40 | /** |
41 | * DOC: overview | |
42 | * | |
43 | * This helper library provides implementations of check and commit functions on | |
44 | * top of the CRTC modeset helper callbacks and the plane helper callbacks. It | |
45 | * also provides convenience implementations for the atomic state handling | |
46 | * callbacks for drivers which don't need to subclass the drm core structures to | |
47 | * add their own additional internal state. | |
48 | * | |
49 | * This library also provides default implementations for the check callback in | |
26196f7e DV |
50 | * drm_atomic_helper_check() and for the commit callback with |
51 | * drm_atomic_helper_commit(). But the individual stages and callbacks are | |
52 | * exposed to allow drivers to mix and match and e.g. use the plane helpers only | |
3150c7d0 DV |
53 | * together with a driver private modeset implementation. |
54 | * | |
55 | * This library also provides implementations for all the legacy driver | |
26196f7e DV |
56 | * interfaces on top of the atomic interface. See drm_atomic_helper_set_config(), |
57 | * drm_atomic_helper_disable_plane(), drm_atomic_helper_disable_plane() and the | |
3150c7d0 DV |
58 | * various functions to implement set_property callbacks. New drivers must not |
59 | * implement these functions themselves but must use the provided helpers. | |
092d01da DV |
60 | * |
61 | * The atomic helper uses the same function table structures as all other | |
ea0dd85a DV |
62 | * modesetting helpers. See the documentation for &struct drm_crtc_helper_funcs, |
63 | * struct &drm_encoder_helper_funcs and &struct drm_connector_helper_funcs. It | |
64 | * also shares the &struct drm_plane_helper_funcs function table with the plane | |
092d01da | 65 | * helpers. |
3150c7d0 | 66 | */ |
c2fcd274 DV |
67 | static void |
68 | drm_atomic_helper_plane_changed(struct drm_atomic_state *state, | |
415c3ac3 | 69 | struct drm_plane_state *old_plane_state, |
c2fcd274 DV |
70 | struct drm_plane_state *plane_state, |
71 | struct drm_plane *plane) | |
72 | { | |
73 | struct drm_crtc_state *crtc_state; | |
74 | ||
415c3ac3 | 75 | if (old_plane_state->crtc) { |
b4d93679 ML |
76 | crtc_state = drm_atomic_get_new_crtc_state(state, |
77 | old_plane_state->crtc); | |
c2fcd274 DV |
78 | |
79 | if (WARN_ON(!crtc_state)) | |
80 | return; | |
81 | ||
82 | crtc_state->planes_changed = true; | |
83 | } | |
84 | ||
85 | if (plane_state->crtc) { | |
b4d93679 | 86 | crtc_state = drm_atomic_get_new_crtc_state(state, plane_state->crtc); |
c2fcd274 DV |
87 | |
88 | if (WARN_ON(!crtc_state)) | |
89 | return; | |
90 | ||
91 | crtc_state->planes_changed = true; | |
92 | } | |
93 | } | |
94 | ||
297e30b5 DV |
95 | /* |
96 | * For connectors that support multiple encoders, either the | |
97 | * .atomic_best_encoder() or .best_encoder() operation must be implemented. | |
98 | */ | |
99 | static struct drm_encoder * | |
100 | pick_single_encoder_for_connector(struct drm_connector *connector) | |
101 | { | |
102 | WARN_ON(connector->encoder_ids[1]); | |
103 | return drm_encoder_find(connector->dev, NULL, connector->encoder_ids[0]); | |
104 | } | |
105 | ||
8248b65d ML |
106 | static int handle_conflicting_encoders(struct drm_atomic_state *state, |
107 | bool disable_conflicting_encoders) | |
97ac3204 | 108 | { |
415c3ac3 | 109 | struct drm_connector_state *new_conn_state; |
40616a26 | 110 | struct drm_connector *connector; |
c36a3254 | 111 | struct drm_connector_list_iter conn_iter; |
40616a26 ML |
112 | struct drm_encoder *encoder; |
113 | unsigned encoder_mask = 0; | |
c36a3254 | 114 | int i, ret = 0; |
97ac3204 | 115 | |
8248b65d ML |
116 | /* |
117 | * First loop, find all newly assigned encoders from the connectors | |
118 | * part of the state. If the same encoder is assigned to multiple | |
119 | * connectors bail out. | |
120 | */ | |
415c3ac3 | 121 | for_each_new_connector_in_state(state, connector, new_conn_state, i) { |
40616a26 ML |
122 | const struct drm_connector_helper_funcs *funcs = connector->helper_private; |
123 | struct drm_encoder *new_encoder; | |
124 | ||
415c3ac3 | 125 | if (!new_conn_state->crtc) |
97ac3204 DV |
126 | continue; |
127 | ||
40616a26 | 128 | if (funcs->atomic_best_encoder) |
415c3ac3 | 129 | new_encoder = funcs->atomic_best_encoder(connector, new_conn_state); |
a0909cc5 | 130 | else if (funcs->best_encoder) |
40616a26 | 131 | new_encoder = funcs->best_encoder(connector); |
a0909cc5 | 132 | else |
297e30b5 | 133 | new_encoder = pick_single_encoder_for_connector(connector); |
40616a26 | 134 | |
8248b65d | 135 | if (new_encoder) { |
6f3be036 | 136 | if (encoder_mask & drm_encoder_mask(new_encoder)) { |
8248b65d ML |
137 | DRM_DEBUG_ATOMIC("[ENCODER:%d:%s] on [CONNECTOR:%d:%s] already assigned\n", |
138 | new_encoder->base.id, new_encoder->name, | |
139 | connector->base.id, connector->name); | |
140 | ||
141 | return -EINVAL; | |
142 | } | |
143 | ||
6f3be036 | 144 | encoder_mask |= drm_encoder_mask(new_encoder); |
8248b65d | 145 | } |
97ac3204 DV |
146 | } |
147 | ||
8248b65d ML |
148 | if (!encoder_mask) |
149 | return 0; | |
97ac3204 | 150 | |
8248b65d ML |
151 | /* |
152 | * Second loop, iterate over all connectors not part of the state. | |
153 | * | |
154 | * If a conflicting encoder is found and disable_conflicting_encoders | |
155 | * is not set, an error is returned. Userspace can provide a solution | |
156 | * through the atomic ioctl. | |
157 | * | |
158 | * If the flag is set conflicting connectors are removed from the crtc | |
159 | * and the crtc is disabled if no encoder is left. This preserves | |
160 | * compatibility with the legacy set_config behavior. | |
161 | */ | |
b982dab1 | 162 | drm_connector_list_iter_begin(state->dev, &conn_iter); |
c36a3254 | 163 | drm_for_each_connector_iter(connector, &conn_iter) { |
40616a26 | 164 | struct drm_crtc_state *crtc_state; |
623369e5 | 165 | |
b4d93679 | 166 | if (drm_atomic_get_new_connector_state(state, connector)) |
40616a26 | 167 | continue; |
623369e5 | 168 | |
40616a26 | 169 | encoder = connector->state->best_encoder; |
6f3be036 | 170 | if (!encoder || !(encoder_mask & drm_encoder_mask(encoder))) |
623369e5 DV |
171 | continue; |
172 | ||
8248b65d ML |
173 | if (!disable_conflicting_encoders) { |
174 | DRM_DEBUG_ATOMIC("[ENCODER:%d:%s] in use on [CRTC:%d:%s] by [CONNECTOR:%d:%s]\n", | |
175 | encoder->base.id, encoder->name, | |
176 | connector->state->crtc->base.id, | |
177 | connector->state->crtc->name, | |
178 | connector->base.id, connector->name); | |
c36a3254 DV |
179 | ret = -EINVAL; |
180 | goto out; | |
8248b65d ML |
181 | } |
182 | ||
415c3ac3 ML |
183 | new_conn_state = drm_atomic_get_connector_state(state, connector); |
184 | if (IS_ERR(new_conn_state)) { | |
185 | ret = PTR_ERR(new_conn_state); | |
c36a3254 DV |
186 | goto out; |
187 | } | |
40616a26 ML |
188 | |
189 | DRM_DEBUG_ATOMIC("[ENCODER:%d:%s] in use on [CRTC:%d:%s], disabling [CONNECTOR:%d:%s]\n", | |
190 | encoder->base.id, encoder->name, | |
415c3ac3 | 191 | new_conn_state->crtc->base.id, new_conn_state->crtc->name, |
40616a26 ML |
192 | connector->base.id, connector->name); |
193 | ||
b4d93679 | 194 | crtc_state = drm_atomic_get_new_crtc_state(state, new_conn_state->crtc); |
40616a26 | 195 | |
415c3ac3 | 196 | ret = drm_atomic_set_crtc_for_connector(new_conn_state, NULL); |
40616a26 | 197 | if (ret) |
c36a3254 | 198 | goto out; |
40616a26 ML |
199 | |
200 | if (!crtc_state->connector_mask) { | |
201 | ret = drm_atomic_set_mode_prop_for_crtc(crtc_state, | |
202 | NULL); | |
203 | if (ret < 0) | |
c36a3254 | 204 | goto out; |
40616a26 ML |
205 | |
206 | crtc_state->active = false; | |
207 | } | |
623369e5 | 208 | } |
c36a3254 | 209 | out: |
b982dab1 | 210 | drm_connector_list_iter_end(&conn_iter); |
623369e5 | 211 | |
c36a3254 | 212 | return ret; |
623369e5 DV |
213 | } |
214 | ||
e87a52b3 ML |
215 | static void |
216 | set_best_encoder(struct drm_atomic_state *state, | |
217 | struct drm_connector_state *conn_state, | |
218 | struct drm_encoder *encoder) | |
219 | { | |
220 | struct drm_crtc_state *crtc_state; | |
221 | struct drm_crtc *crtc; | |
222 | ||
223 | if (conn_state->best_encoder) { | |
224 | /* Unset the encoder_mask in the old crtc state. */ | |
225 | crtc = conn_state->connector->state->crtc; | |
226 | ||
227 | /* A NULL crtc is an error here because we should have | |
228 | * duplicated a NULL best_encoder when crtc was NULL. | |
229 | * As an exception restoring duplicated atomic state | |
230 | * during resume is allowed, so don't warn when | |
231 | * best_encoder is equal to encoder we intend to set. | |
232 | */ | |
233 | WARN_ON(!crtc && encoder != conn_state->best_encoder); | |
234 | if (crtc) { | |
b4d93679 | 235 | crtc_state = drm_atomic_get_new_crtc_state(state, crtc); |
e87a52b3 ML |
236 | |
237 | crtc_state->encoder_mask &= | |
6f3be036 | 238 | ~drm_encoder_mask(conn_state->best_encoder); |
e87a52b3 ML |
239 | } |
240 | } | |
241 | ||
242 | if (encoder) { | |
243 | crtc = conn_state->crtc; | |
244 | WARN_ON(!crtc); | |
245 | if (crtc) { | |
b4d93679 | 246 | crtc_state = drm_atomic_get_new_crtc_state(state, crtc); |
e87a52b3 ML |
247 | |
248 | crtc_state->encoder_mask |= | |
6f3be036 | 249 | drm_encoder_mask(encoder); |
e87a52b3 ML |
250 | } |
251 | } | |
252 | ||
253 | conn_state->best_encoder = encoder; | |
254 | } | |
255 | ||
ec5aaa58 | 256 | static void |
623369e5 | 257 | steal_encoder(struct drm_atomic_state *state, |
ff19b786 | 258 | struct drm_encoder *encoder) |
623369e5 | 259 | { |
623369e5 DV |
260 | struct drm_crtc_state *crtc_state; |
261 | struct drm_connector *connector; | |
415c3ac3 | 262 | struct drm_connector_state *old_connector_state, *new_connector_state; |
ec5aaa58 | 263 | int i; |
623369e5 | 264 | |
415c3ac3 | 265 | for_each_oldnew_connector_in_state(state, connector, old_connector_state, new_connector_state, i) { |
ff19b786 | 266 | struct drm_crtc *encoder_crtc; |
623369e5 | 267 | |
415c3ac3 | 268 | if (new_connector_state->best_encoder != encoder) |
623369e5 DV |
269 | continue; |
270 | ||
415c3ac3 | 271 | encoder_crtc = old_connector_state->crtc; |
623369e5 | 272 | |
ff19b786 ML |
273 | DRM_DEBUG_ATOMIC("[ENCODER:%d:%s] in use on [CRTC:%d:%s], stealing it\n", |
274 | encoder->base.id, encoder->name, | |
275 | encoder_crtc->base.id, encoder_crtc->name); | |
e87a52b3 | 276 | |
415c3ac3 | 277 | set_best_encoder(state, new_connector_state, NULL); |
623369e5 | 278 | |
b4d93679 | 279 | crtc_state = drm_atomic_get_new_crtc_state(state, encoder_crtc); |
ff19b786 ML |
280 | crtc_state->connectors_changed = true; |
281 | ||
ec5aaa58 | 282 | return; |
623369e5 | 283 | } |
623369e5 DV |
284 | } |
285 | ||
286 | static int | |
9459545b ML |
287 | update_connector_routing(struct drm_atomic_state *state, |
288 | struct drm_connector *connector, | |
415c3ac3 ML |
289 | struct drm_connector_state *old_connector_state, |
290 | struct drm_connector_state *new_connector_state) | |
623369e5 | 291 | { |
b5ceff20 | 292 | const struct drm_connector_helper_funcs *funcs; |
623369e5 | 293 | struct drm_encoder *new_encoder; |
623369e5 | 294 | struct drm_crtc_state *crtc_state; |
623369e5 | 295 | |
17a38d9c DV |
296 | DRM_DEBUG_ATOMIC("Updating routing for [CONNECTOR:%d:%s]\n", |
297 | connector->base.id, | |
298 | connector->name); | |
623369e5 | 299 | |
415c3ac3 ML |
300 | if (old_connector_state->crtc != new_connector_state->crtc) { |
301 | if (old_connector_state->crtc) { | |
b4d93679 | 302 | crtc_state = drm_atomic_get_new_crtc_state(state, old_connector_state->crtc); |
fc596660 | 303 | crtc_state->connectors_changed = true; |
623369e5 DV |
304 | } |
305 | ||
415c3ac3 | 306 | if (new_connector_state->crtc) { |
b4d93679 | 307 | crtc_state = drm_atomic_get_new_crtc_state(state, new_connector_state->crtc); |
fc596660 | 308 | crtc_state->connectors_changed = true; |
623369e5 DV |
309 | } |
310 | } | |
311 | ||
415c3ac3 | 312 | if (!new_connector_state->crtc) { |
17a38d9c | 313 | DRM_DEBUG_ATOMIC("Disabling [CONNECTOR:%d:%s]\n", |
623369e5 DV |
314 | connector->base.id, |
315 | connector->name); | |
316 | ||
415c3ac3 | 317 | set_best_encoder(state, new_connector_state, NULL); |
623369e5 DV |
318 | |
319 | return 0; | |
320 | } | |
321 | ||
de9f8eea LP |
322 | crtc_state = drm_atomic_get_new_crtc_state(state, |
323 | new_connector_state->crtc); | |
324 | /* | |
325 | * For compatibility with legacy users, we want to make sure that | |
326 | * we allow DPMS On->Off modesets on unregistered connectors. Modesets | |
327 | * which would result in anything else must be considered invalid, to | |
328 | * avoid turning on new displays on dead connectors. | |
329 | * | |
330 | * Since the connector can be unregistered at any point during an | |
331 | * atomic check or commit, this is racy. But that's OK: all we care | |
332 | * about is ensuring that userspace can't do anything but shut off the | |
333 | * display on a connector that was destroyed after its been notified, | |
334 | * not before. | |
335 | */ | |
336 | if (drm_connector_is_unregistered(connector) && crtc_state->active) { | |
337 | DRM_DEBUG_ATOMIC("[CONNECTOR:%d:%s] is not registered\n", | |
338 | connector->base.id, connector->name); | |
339 | return -EINVAL; | |
340 | } | |
341 | ||
623369e5 | 342 | funcs = connector->helper_private; |
3b8a684b DV |
343 | |
344 | if (funcs->atomic_best_encoder) | |
345 | new_encoder = funcs->atomic_best_encoder(connector, | |
415c3ac3 | 346 | new_connector_state); |
c61b93fe | 347 | else if (funcs->best_encoder) |
3b8a684b | 348 | new_encoder = funcs->best_encoder(connector); |
c61b93fe | 349 | else |
297e30b5 | 350 | new_encoder = pick_single_encoder_for_connector(connector); |
623369e5 DV |
351 | |
352 | if (!new_encoder) { | |
17a38d9c DV |
353 | DRM_DEBUG_ATOMIC("No suitable encoder found for [CONNECTOR:%d:%s]\n", |
354 | connector->base.id, | |
355 | connector->name); | |
623369e5 DV |
356 | return -EINVAL; |
357 | } | |
358 | ||
415c3ac3 | 359 | if (!drm_encoder_crtc_ok(new_encoder, new_connector_state->crtc)) { |
6ac7c548 | 360 | DRM_DEBUG_ATOMIC("[ENCODER:%d:%s] incompatible with [CRTC:%d:%s]\n", |
5481c8fb DV |
361 | new_encoder->base.id, |
362 | new_encoder->name, | |
415c3ac3 ML |
363 | new_connector_state->crtc->base.id, |
364 | new_connector_state->crtc->name); | |
5481c8fb DV |
365 | return -EINVAL; |
366 | } | |
367 | ||
415c3ac3 ML |
368 | if (new_encoder == new_connector_state->best_encoder) { |
369 | set_best_encoder(state, new_connector_state, new_encoder); | |
e87a52b3 | 370 | |
fa3ab4c2 | 371 | DRM_DEBUG_ATOMIC("[CONNECTOR:%d:%s] keeps [ENCODER:%d:%s], now on [CRTC:%d:%s]\n", |
17a38d9c DV |
372 | connector->base.id, |
373 | connector->name, | |
374 | new_encoder->base.id, | |
375 | new_encoder->name, | |
415c3ac3 ML |
376 | new_connector_state->crtc->base.id, |
377 | new_connector_state->crtc->name); | |
623369e5 DV |
378 | |
379 | return 0; | |
380 | } | |
381 | ||
ec5aaa58 | 382 | steal_encoder(state, new_encoder); |
6ea76f3c | 383 | |
415c3ac3 | 384 | set_best_encoder(state, new_connector_state, new_encoder); |
e87a52b3 | 385 | |
fc596660 | 386 | crtc_state->connectors_changed = true; |
623369e5 | 387 | |
fa3ab4c2 | 388 | DRM_DEBUG_ATOMIC("[CONNECTOR:%d:%s] using [ENCODER:%d:%s] on [CRTC:%d:%s]\n", |
17a38d9c DV |
389 | connector->base.id, |
390 | connector->name, | |
391 | new_encoder->base.id, | |
392 | new_encoder->name, | |
415c3ac3 ML |
393 | new_connector_state->crtc->base.id, |
394 | new_connector_state->crtc->name); | |
623369e5 DV |
395 | |
396 | return 0; | |
397 | } | |
398 | ||
399 | static int | |
400 | mode_fixup(struct drm_atomic_state *state) | |
401 | { | |
df63b999 | 402 | struct drm_crtc *crtc; |
415c3ac3 | 403 | struct drm_crtc_state *new_crtc_state; |
df63b999 | 404 | struct drm_connector *connector; |
415c3ac3 | 405 | struct drm_connector_state *new_conn_state; |
623369e5 | 406 | int i; |
f9ad86e4 | 407 | int ret; |
623369e5 | 408 | |
415c3ac3 ML |
409 | for_each_new_crtc_in_state(state, crtc, new_crtc_state, i) { |
410 | if (!new_crtc_state->mode_changed && | |
411 | !new_crtc_state->connectors_changed) | |
623369e5 DV |
412 | continue; |
413 | ||
415c3ac3 | 414 | drm_mode_copy(&new_crtc_state->adjusted_mode, &new_crtc_state->mode); |
623369e5 DV |
415 | } |
416 | ||
415c3ac3 | 417 | for_each_new_connector_in_state(state, connector, new_conn_state, i) { |
b5ceff20 | 418 | const struct drm_encoder_helper_funcs *funcs; |
623369e5 DV |
419 | struct drm_encoder *encoder; |
420 | ||
415c3ac3 | 421 | WARN_ON(!!new_conn_state->best_encoder != !!new_conn_state->crtc); |
623369e5 | 422 | |
415c3ac3 | 423 | if (!new_conn_state->crtc || !new_conn_state->best_encoder) |
623369e5 DV |
424 | continue; |
425 | ||
415c3ac3 | 426 | new_crtc_state = |
b4d93679 | 427 | drm_atomic_get_new_crtc_state(state, new_conn_state->crtc); |
623369e5 DV |
428 | |
429 | /* | |
430 | * Each encoder has at most one connector (since we always steal | |
431 | * it away), so we won't call ->mode_fixup twice. | |
432 | */ | |
415c3ac3 | 433 | encoder = new_conn_state->best_encoder; |
623369e5 DV |
434 | funcs = encoder->helper_private; |
435 | ||
415c3ac3 ML |
436 | ret = drm_bridge_mode_fixup(encoder->bridge, &new_crtc_state->mode, |
437 | &new_crtc_state->adjusted_mode); | |
862e686c AT |
438 | if (!ret) { |
439 | DRM_DEBUG_ATOMIC("Bridge fixup failed\n"); | |
440 | return -EINVAL; | |
623369e5 DV |
441 | } |
442 | ||
2827635e | 443 | if (funcs && funcs->atomic_check) { |
415c3ac3 ML |
444 | ret = funcs->atomic_check(encoder, new_crtc_state, |
445 | new_conn_state); | |
4cd4df80 | 446 | if (ret) { |
17a38d9c DV |
447 | DRM_DEBUG_ATOMIC("[ENCODER:%d:%s] check failed\n", |
448 | encoder->base.id, encoder->name); | |
4cd4df80 TR |
449 | return ret; |
450 | } | |
2827635e | 451 | } else if (funcs && funcs->mode_fixup) { |
415c3ac3 ML |
452 | ret = funcs->mode_fixup(encoder, &new_crtc_state->mode, |
453 | &new_crtc_state->adjusted_mode); | |
4cd4df80 | 454 | if (!ret) { |
17a38d9c DV |
455 | DRM_DEBUG_ATOMIC("[ENCODER:%d:%s] fixup failed\n", |
456 | encoder->base.id, encoder->name); | |
4cd4df80 TR |
457 | return -EINVAL; |
458 | } | |
623369e5 DV |
459 | } |
460 | } | |
461 | ||
415c3ac3 | 462 | for_each_new_crtc_in_state(state, crtc, new_crtc_state, i) { |
b5ceff20 | 463 | const struct drm_crtc_helper_funcs *funcs; |
623369e5 | 464 | |
415c3ac3 | 465 | if (!new_crtc_state->enable) |
f55f1701 LY |
466 | continue; |
467 | ||
415c3ac3 ML |
468 | if (!new_crtc_state->mode_changed && |
469 | !new_crtc_state->connectors_changed) | |
623369e5 DV |
470 | continue; |
471 | ||
472 | funcs = crtc->helper_private; | |
840bfe95 ACO |
473 | if (!funcs->mode_fixup) |
474 | continue; | |
475 | ||
415c3ac3 ML |
476 | ret = funcs->mode_fixup(crtc, &new_crtc_state->mode, |
477 | &new_crtc_state->adjusted_mode); | |
623369e5 | 478 | if (!ret) { |
fa3ab4c2 VS |
479 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] fixup failed\n", |
480 | crtc->base.id, crtc->name); | |
623369e5 DV |
481 | return -EINVAL; |
482 | } | |
483 | } | |
484 | ||
485 | return 0; | |
486 | } | |
487 | ||
faf94a08 JA |
488 | static enum drm_mode_status mode_valid_path(struct drm_connector *connector, |
489 | struct drm_encoder *encoder, | |
490 | struct drm_crtc *crtc, | |
491 | struct drm_display_mode *mode) | |
492 | { | |
493 | enum drm_mode_status ret; | |
494 | ||
495 | ret = drm_encoder_mode_valid(encoder, mode); | |
496 | if (ret != MODE_OK) { | |
497 | DRM_DEBUG_ATOMIC("[ENCODER:%d:%s] mode_valid() failed\n", | |
498 | encoder->base.id, encoder->name); | |
499 | return ret; | |
500 | } | |
501 | ||
502 | ret = drm_bridge_mode_valid(encoder->bridge, mode); | |
503 | if (ret != MODE_OK) { | |
504 | DRM_DEBUG_ATOMIC("[BRIDGE] mode_valid() failed\n"); | |
505 | return ret; | |
506 | } | |
507 | ||
508 | ret = drm_crtc_mode_valid(crtc, mode); | |
509 | if (ret != MODE_OK) { | |
510 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] mode_valid() failed\n", | |
511 | crtc->base.id, crtc->name); | |
512 | return ret; | |
513 | } | |
514 | ||
515 | return ret; | |
516 | } | |
517 | ||
518 | static int | |
519 | mode_valid(struct drm_atomic_state *state) | |
520 | { | |
521 | struct drm_connector_state *conn_state; | |
522 | struct drm_connector *connector; | |
523 | int i; | |
524 | ||
525 | for_each_new_connector_in_state(state, connector, conn_state, i) { | |
526 | struct drm_encoder *encoder = conn_state->best_encoder; | |
527 | struct drm_crtc *crtc = conn_state->crtc; | |
528 | struct drm_crtc_state *crtc_state; | |
529 | enum drm_mode_status mode_status; | |
530 | struct drm_display_mode *mode; | |
531 | ||
532 | if (!crtc || !encoder) | |
533 | continue; | |
534 | ||
535 | crtc_state = drm_atomic_get_new_crtc_state(state, crtc); | |
536 | if (!crtc_state) | |
537 | continue; | |
538 | if (!crtc_state->mode_changed && !crtc_state->connectors_changed) | |
539 | continue; | |
540 | ||
541 | mode = &crtc_state->mode; | |
542 | ||
543 | mode_status = mode_valid_path(connector, encoder, crtc, mode); | |
544 | if (mode_status != MODE_OK) | |
545 | return -EINVAL; | |
546 | } | |
547 | ||
548 | return 0; | |
549 | } | |
550 | ||
d9b13620 | 551 | /** |
f98bd3ef | 552 | * drm_atomic_helper_check_modeset - validate state object for modeset changes |
d9b13620 DV |
553 | * @dev: DRM device |
554 | * @state: the driver state object | |
555 | * | |
556 | * Check the state object to see if the requested state is physically possible. | |
557 | * This does all the crtc and connector related computations for an atomic | |
ce09d766 ML |
558 | * update and adds any additional connectors needed for full modesets. It calls |
559 | * the various per-object callbacks in the follow order: | |
560 | * | |
561 | * 1. &drm_connector_helper_funcs.atomic_best_encoder for determining the new encoder. | |
562 | * 2. &drm_connector_helper_funcs.atomic_check to validate the connector state. | |
563 | * 3. If it's determined a modeset is needed then all connectors on the affected crtc | |
564 | * crtc are added and &drm_connector_helper_funcs.atomic_check is run on them. | |
faf94a08 JA |
565 | * 4. &drm_encoder_helper_funcs.mode_valid, &drm_bridge_funcs.mode_valid and |
566 | * &drm_crtc_helper_funcs.mode_valid are called on the affected components. | |
567 | * 5. &drm_bridge_funcs.mode_fixup is called on all encoder bridges. | |
568 | * 6. &drm_encoder_helper_funcs.atomic_check is called to validate any encoder state. | |
ce09d766 ML |
569 | * This function is only called when the encoder will be part of a configured crtc, |
570 | * it must not be used for implementing connector property validation. | |
571 | * If this function is NULL, &drm_atomic_encoder_helper_funcs.mode_fixup is called | |
572 | * instead. | |
faf94a08 | 573 | * 7. &drm_crtc_helper_funcs.mode_fixup is called last, to fix up the mode with crtc constraints. |
6806cdf9 DV |
574 | * |
575 | * &drm_crtc_state.mode_changed is set when the input mode is changed. | |
576 | * &drm_crtc_state.connectors_changed is set when a connector is added or | |
577 | * removed from the crtc. &drm_crtc_state.active_changed is set when | |
578 | * &drm_crtc_state.active changes, which is used for DPMS. | |
d807ed1c | 579 | * See also: drm_atomic_crtc_needs_modeset() |
d9b13620 DV |
580 | * |
581 | * IMPORTANT: | |
582 | * | |
6806cdf9 DV |
583 | * Drivers which set &drm_crtc_state.mode_changed (e.g. in their |
584 | * &drm_plane_helper_funcs.atomic_check hooks if a plane update can't be done | |
585 | * without a full modeset) _must_ call this function afterwards after that | |
586 | * change. It is permitted to call this function multiple times for the same | |
587 | * update, e.g. when the &drm_crtc_helper_funcs.atomic_check functions depend | |
588 | * upon the adjusted dotclock for fifo space allocation and watermark | |
589 | * computation. | |
d9b13620 | 590 | * |
c39032a8 | 591 | * RETURNS: |
d9b13620 DV |
592 | * Zero for success or -errno |
593 | */ | |
594 | int | |
934ce1c2 | 595 | drm_atomic_helper_check_modeset(struct drm_device *dev, |
623369e5 DV |
596 | struct drm_atomic_state *state) |
597 | { | |
623369e5 | 598 | struct drm_crtc *crtc; |
415c3ac3 | 599 | struct drm_crtc_state *old_crtc_state, *new_crtc_state; |
df63b999 | 600 | struct drm_connector *connector; |
415c3ac3 | 601 | struct drm_connector_state *old_connector_state, *new_connector_state; |
623369e5 | 602 | int i, ret; |
ce09d766 | 603 | unsigned connectors_mask = 0; |
623369e5 | 604 | |
415c3ac3 | 605 | for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) { |
970ece83 ML |
606 | bool has_connectors = |
607 | !!new_crtc_state->connector_mask; | |
608 | ||
869e188a DV |
609 | WARN_ON(!drm_modeset_is_locked(&crtc->mutex)); |
610 | ||
415c3ac3 | 611 | if (!drm_mode_equal(&old_crtc_state->mode, &new_crtc_state->mode)) { |
fa3ab4c2 VS |
612 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] mode changed\n", |
613 | crtc->base.id, crtc->name); | |
415c3ac3 | 614 | new_crtc_state->mode_changed = true; |
623369e5 DV |
615 | } |
616 | ||
415c3ac3 | 617 | if (old_crtc_state->enable != new_crtc_state->enable) { |
fa3ab4c2 VS |
618 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] enable changed\n", |
619 | crtc->base.id, crtc->name); | |
fc596660 ML |
620 | |
621 | /* | |
622 | * For clarity this assignment is done here, but | |
623 | * enable == 0 is only true when there are no | |
624 | * connectors and a NULL mode. | |
625 | * | |
626 | * The other way around is true as well. enable != 0 | |
627 | * iff connectors are attached and a mode is set. | |
628 | */ | |
415c3ac3 ML |
629 | new_crtc_state->mode_changed = true; |
630 | new_crtc_state->connectors_changed = true; | |
623369e5 | 631 | } |
24d6652c ML |
632 | |
633 | if (old_crtc_state->active != new_crtc_state->active) { | |
634 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] active changed\n", | |
635 | crtc->base.id, crtc->name); | |
636 | new_crtc_state->active_changed = true; | |
637 | } | |
970ece83 ML |
638 | |
639 | if (new_crtc_state->enable != has_connectors) { | |
640 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] enabled/connectors mismatch\n", | |
641 | crtc->base.id, crtc->name); | |
642 | ||
643 | return -EINVAL; | |
644 | } | |
623369e5 DV |
645 | } |
646 | ||
44596b8c | 647 | ret = handle_conflicting_encoders(state, false); |
8248b65d ML |
648 | if (ret) |
649 | return ret; | |
40616a26 | 650 | |
415c3ac3 | 651 | for_each_oldnew_connector_in_state(state, connector, old_connector_state, new_connector_state, i) { |
ce09d766 ML |
652 | const struct drm_connector_helper_funcs *funcs = connector->helper_private; |
653 | ||
869e188a DV |
654 | WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex)); |
655 | ||
623369e5 | 656 | /* |
d807ed1c BS |
657 | * This only sets crtc->connectors_changed for routing changes, |
658 | * drivers must set crtc->connectors_changed themselves when | |
659 | * connector properties need to be updated. | |
623369e5 | 660 | */ |
9459545b | 661 | ret = update_connector_routing(state, connector, |
415c3ac3 ML |
662 | old_connector_state, |
663 | new_connector_state); | |
623369e5 DV |
664 | if (ret) |
665 | return ret; | |
415c3ac3 | 666 | if (old_connector_state->crtc) { |
b4d93679 ML |
667 | new_crtc_state = drm_atomic_get_new_crtc_state(state, |
668 | old_connector_state->crtc); | |
415c3ac3 ML |
669 | if (old_connector_state->link_status != |
670 | new_connector_state->link_status) | |
671 | new_crtc_state->connectors_changed = true; | |
47e22ff1 RS |
672 | |
673 | if (old_connector_state->max_requested_bpc != | |
674 | new_connector_state->max_requested_bpc) | |
675 | new_crtc_state->connectors_changed = true; | |
40ee6fbe | 676 | } |
ce09d766 ML |
677 | |
678 | if (funcs->atomic_check) | |
679 | ret = funcs->atomic_check(connector, new_connector_state); | |
680 | if (ret) | |
681 | return ret; | |
682 | ||
ca52bea9 | 683 | connectors_mask |= BIT(i); |
623369e5 DV |
684 | } |
685 | ||
686 | /* | |
687 | * After all the routing has been prepared we need to add in any | |
688 | * connector which is itself unchanged, but who's crtc changes it's | |
689 | * configuration. This must be done before calling mode_fixup in case a | |
690 | * crtc only changed its mode but has the same set of connectors. | |
691 | */ | |
415c3ac3 | 692 | for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) { |
415c3ac3 | 693 | if (!drm_atomic_crtc_needs_modeset(new_crtc_state)) |
623369e5 DV |
694 | continue; |
695 | ||
fa3ab4c2 VS |
696 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] needs all connectors, enable: %c, active: %c\n", |
697 | crtc->base.id, crtc->name, | |
415c3ac3 ML |
698 | new_crtc_state->enable ? 'y' : 'n', |
699 | new_crtc_state->active ? 'y' : 'n'); | |
623369e5 DV |
700 | |
701 | ret = drm_atomic_add_affected_connectors(state, crtc); | |
702 | if (ret != 0) | |
703 | return ret; | |
704 | ||
57744aa7 ML |
705 | ret = drm_atomic_add_affected_planes(state, crtc); |
706 | if (ret != 0) | |
707 | return ret; | |
623369e5 DV |
708 | } |
709 | ||
ce09d766 ML |
710 | /* |
711 | * Iterate over all connectors again, to make sure atomic_check() | |
712 | * has been called on them when a modeset is forced. | |
713 | */ | |
714 | for_each_oldnew_connector_in_state(state, connector, old_connector_state, new_connector_state, i) { | |
715 | const struct drm_connector_helper_funcs *funcs = connector->helper_private; | |
716 | ||
717 | if (connectors_mask & BIT(i)) | |
718 | continue; | |
719 | ||
720 | if (funcs->atomic_check) | |
721 | ret = funcs->atomic_check(connector, new_connector_state); | |
722 | if (ret) | |
723 | return ret; | |
724 | } | |
725 | ||
faf94a08 JA |
726 | ret = mode_valid(state); |
727 | if (ret) | |
728 | return ret; | |
729 | ||
623369e5 DV |
730 | return mode_fixup(state); |
731 | } | |
d9b13620 | 732 | EXPORT_SYMBOL(drm_atomic_helper_check_modeset); |
623369e5 | 733 | |
a01cb8ba VS |
734 | /** |
735 | * drm_atomic_helper_check_plane_state() - Check plane state for validity | |
736 | * @plane_state: plane state to check | |
737 | * @crtc_state: crtc state to check | |
a01cb8ba VS |
738 | * @min_scale: minimum @src:@dest scaling factor in 16.16 fixed point |
739 | * @max_scale: maximum @src:@dest scaling factor in 16.16 fixed point | |
740 | * @can_position: is it legal to position the plane such that it | |
741 | * doesn't cover the entire crtc? This will generally | |
742 | * only be false for primary planes. | |
743 | * @can_update_disabled: can the plane be updated while the crtc | |
744 | * is disabled? | |
745 | * | |
746 | * Checks that a desired plane update is valid, and updates various | |
747 | * bits of derived state (clipped coordinates etc.). Drivers that provide | |
748 | * their own plane handling rather than helper-provided implementations may | |
749 | * still wish to call this function to avoid duplication of error checking | |
750 | * code. | |
751 | * | |
752 | * RETURNS: | |
753 | * Zero if update appears valid, error code on failure | |
754 | */ | |
755 | int drm_atomic_helper_check_plane_state(struct drm_plane_state *plane_state, | |
756 | const struct drm_crtc_state *crtc_state, | |
a01cb8ba VS |
757 | int min_scale, |
758 | int max_scale, | |
759 | bool can_position, | |
760 | bool can_update_disabled) | |
761 | { | |
762 | struct drm_framebuffer *fb = plane_state->fb; | |
763 | struct drm_rect *src = &plane_state->src; | |
764 | struct drm_rect *dst = &plane_state->dst; | |
765 | unsigned int rotation = plane_state->rotation; | |
81af63a4 | 766 | struct drm_rect clip = {}; |
a01cb8ba VS |
767 | int hscale, vscale; |
768 | ||
769 | WARN_ON(plane_state->crtc && plane_state->crtc != crtc_state->crtc); | |
770 | ||
771 | *src = drm_plane_state_src(plane_state); | |
772 | *dst = drm_plane_state_dest(plane_state); | |
773 | ||
774 | if (!fb) { | |
775 | plane_state->visible = false; | |
776 | return 0; | |
777 | } | |
778 | ||
779 | /* crtc should only be NULL when disabling (i.e., !fb) */ | |
780 | if (WARN_ON(!plane_state->crtc)) { | |
781 | plane_state->visible = false; | |
782 | return 0; | |
783 | } | |
784 | ||
785 | if (!crtc_state->enable && !can_update_disabled) { | |
786 | DRM_DEBUG_KMS("Cannot update plane of a disabled CRTC.\n"); | |
787 | return -EINVAL; | |
788 | } | |
789 | ||
790 | drm_rect_rotate(src, fb->width << 16, fb->height << 16, rotation); | |
791 | ||
792 | /* Check scaling */ | |
793 | hscale = drm_rect_calc_hscale(src, dst, min_scale, max_scale); | |
794 | vscale = drm_rect_calc_vscale(src, dst, min_scale, max_scale); | |
795 | if (hscale < 0 || vscale < 0) { | |
796 | DRM_DEBUG_KMS("Invalid scaling of plane\n"); | |
797 | drm_rect_debug_print("src: ", &plane_state->src, true); | |
798 | drm_rect_debug_print("dst: ", &plane_state->dst, false); | |
799 | return -ERANGE; | |
800 | } | |
801 | ||
81af63a4 VS |
802 | if (crtc_state->enable) |
803 | drm_mode_get_hv_timing(&crtc_state->mode, &clip.x2, &clip.y2); | |
804 | ||
f96bdf56 | 805 | plane_state->visible = drm_rect_clip_scaled(src, dst, &clip); |
a01cb8ba VS |
806 | |
807 | drm_rect_rotate_inv(src, fb->width << 16, fb->height << 16, rotation); | |
808 | ||
809 | if (!plane_state->visible) | |
810 | /* | |
811 | * Plane isn't visible; some drivers can handle this | |
812 | * so we just return success here. Drivers that can't | |
813 | * (including those that use the primary plane helper's | |
814 | * update function) will return an error from their | |
815 | * update_plane handler. | |
816 | */ | |
817 | return 0; | |
818 | ||
81af63a4 | 819 | if (!can_position && !drm_rect_equals(dst, &clip)) { |
a01cb8ba VS |
820 | DRM_DEBUG_KMS("Plane must cover entire CRTC\n"); |
821 | drm_rect_debug_print("dst: ", dst, false); | |
81af63a4 | 822 | drm_rect_debug_print("clip: ", &clip, false); |
a01cb8ba VS |
823 | return -EINVAL; |
824 | } | |
825 | ||
826 | return 0; | |
827 | } | |
828 | EXPORT_SYMBOL(drm_atomic_helper_check_plane_state); | |
829 | ||
c2fcd274 | 830 | /** |
f98bd3ef | 831 | * drm_atomic_helper_check_planes - validate state object for planes changes |
c2fcd274 DV |
832 | * @dev: DRM device |
833 | * @state: the driver state object | |
834 | * | |
835 | * Check the state object to see if the requested state is physically possible. | |
d9b13620 | 836 | * This does all the plane update related checks using by calling into the |
6806cdf9 DV |
837 | * &drm_crtc_helper_funcs.atomic_check and &drm_plane_helper_funcs.atomic_check |
838 | * hooks provided by the driver. | |
c2fcd274 | 839 | * |
6806cdf9 | 840 | * It also sets &drm_crtc_state.planes_changed to indicate that a crtc has |
fc596660 ML |
841 | * updated planes. |
842 | * | |
c39032a8 | 843 | * RETURNS: |
c2fcd274 DV |
844 | * Zero for success or -errno |
845 | */ | |
d9b13620 DV |
846 | int |
847 | drm_atomic_helper_check_planes(struct drm_device *dev, | |
848 | struct drm_atomic_state *state) | |
c2fcd274 | 849 | { |
df63b999 | 850 | struct drm_crtc *crtc; |
415c3ac3 | 851 | struct drm_crtc_state *new_crtc_state; |
df63b999 | 852 | struct drm_plane *plane; |
415c3ac3 | 853 | struct drm_plane_state *new_plane_state, *old_plane_state; |
c2fcd274 DV |
854 | int i, ret = 0; |
855 | ||
415c3ac3 | 856 | for_each_oldnew_plane_in_state(state, plane, old_plane_state, new_plane_state, i) { |
b5ceff20 | 857 | const struct drm_plane_helper_funcs *funcs; |
c2fcd274 | 858 | |
869e188a DV |
859 | WARN_ON(!drm_modeset_is_locked(&plane->mutex)); |
860 | ||
c2fcd274 DV |
861 | funcs = plane->helper_private; |
862 | ||
415c3ac3 | 863 | drm_atomic_helper_plane_changed(state, old_plane_state, new_plane_state, plane); |
c2fcd274 DV |
864 | |
865 | if (!funcs || !funcs->atomic_check) | |
866 | continue; | |
867 | ||
415c3ac3 | 868 | ret = funcs->atomic_check(plane, new_plane_state); |
c2fcd274 | 869 | if (ret) { |
9f4c97a2 VS |
870 | DRM_DEBUG_ATOMIC("[PLANE:%d:%s] atomic driver check failed\n", |
871 | plane->base.id, plane->name); | |
c2fcd274 DV |
872 | return ret; |
873 | } | |
874 | } | |
875 | ||
415c3ac3 | 876 | for_each_new_crtc_in_state(state, crtc, new_crtc_state, i) { |
b5ceff20 | 877 | const struct drm_crtc_helper_funcs *funcs; |
c2fcd274 DV |
878 | |
879 | funcs = crtc->helper_private; | |
880 | ||
881 | if (!funcs || !funcs->atomic_check) | |
882 | continue; | |
883 | ||
415c3ac3 | 884 | ret = funcs->atomic_check(crtc, new_crtc_state); |
c2fcd274 | 885 | if (ret) { |
fa3ab4c2 VS |
886 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] atomic driver check failed\n", |
887 | crtc->base.id, crtc->name); | |
c2fcd274 DV |
888 | return ret; |
889 | } | |
890 | } | |
891 | ||
d9b13620 DV |
892 | return ret; |
893 | } | |
894 | EXPORT_SYMBOL(drm_atomic_helper_check_planes); | |
895 | ||
896 | /** | |
897 | * drm_atomic_helper_check - validate state object | |
898 | * @dev: DRM device | |
899 | * @state: the driver state object | |
900 | * | |
901 | * Check the state object to see if the requested state is physically possible. | |
902 | * Only crtcs and planes have check callbacks, so for any additional (global) | |
903 | * checking that a driver needs it can simply wrap that around this function. | |
6806cdf9 DV |
904 | * Drivers without such needs can directly use this as their |
905 | * &drm_mode_config_funcs.atomic_check callback. | |
d9b13620 | 906 | * |
b4274fbe DV |
907 | * This just wraps the two parts of the state checking for planes and modeset |
908 | * state in the default order: First it calls drm_atomic_helper_check_modeset() | |
909 | * and then drm_atomic_helper_check_planes(). The assumption is that the | |
6806cdf9 DV |
910 | * @drm_plane_helper_funcs.atomic_check and @drm_crtc_helper_funcs.atomic_check |
911 | * functions depend upon an updated adjusted_mode.clock to e.g. properly compute | |
912 | * watermarks. | |
b4274fbe | 913 | * |
49efffc7 PU |
914 | * Note that zpos normalization will add all enable planes to the state which |
915 | * might not desired for some drivers. | |
916 | * For example enable/disable of a cursor plane which have fixed zpos value | |
917 | * would trigger all other enabled planes to be forced to the state change. | |
918 | * | |
c39032a8 | 919 | * RETURNS: |
d9b13620 DV |
920 | * Zero for success or -errno |
921 | */ | |
922 | int drm_atomic_helper_check(struct drm_device *dev, | |
923 | struct drm_atomic_state *state) | |
924 | { | |
925 | int ret; | |
926 | ||
b4274fbe | 927 | ret = drm_atomic_helper_check_modeset(dev, state); |
d9b13620 DV |
928 | if (ret) |
929 | return ret; | |
930 | ||
49efffc7 PU |
931 | if (dev->mode_config.normalize_zpos) { |
932 | ret = drm_atomic_normalize_zpos(dev, state); | |
933 | if (ret) | |
934 | return ret; | |
935 | } | |
936 | ||
b4274fbe | 937 | ret = drm_atomic_helper_check_planes(dev, state); |
934ce1c2 RC |
938 | if (ret) |
939 | return ret; | |
940 | ||
fef9df8b GP |
941 | if (state->legacy_cursor_update) |
942 | state->async_update = !drm_atomic_helper_async_check(dev, state); | |
943 | ||
c2fcd274 DV |
944 | return ret; |
945 | } | |
946 | EXPORT_SYMBOL(drm_atomic_helper_check); | |
947 | ||
623369e5 DV |
948 | static void |
949 | disable_outputs(struct drm_device *dev, struct drm_atomic_state *old_state) | |
950 | { | |
df63b999 | 951 | struct drm_connector *connector; |
415c3ac3 | 952 | struct drm_connector_state *old_conn_state, *new_conn_state; |
df63b999 | 953 | struct drm_crtc *crtc; |
415c3ac3 | 954 | struct drm_crtc_state *old_crtc_state, *new_crtc_state; |
623369e5 DV |
955 | int i; |
956 | ||
415c3ac3 | 957 | for_each_oldnew_connector_in_state(old_state, connector, old_conn_state, new_conn_state, i) { |
b5ceff20 | 958 | const struct drm_encoder_helper_funcs *funcs; |
623369e5 DV |
959 | struct drm_encoder *encoder; |
960 | ||
623369e5 DV |
961 | /* Shut down everything that's in the changeset and currently |
962 | * still on. So need to check the old, saved state. */ | |
df63b999 | 963 | if (!old_conn_state->crtc) |
623369e5 DV |
964 | continue; |
965 | ||
b4d93679 | 966 | old_crtc_state = drm_atomic_get_old_crtc_state(old_state, old_conn_state->crtc); |
eab3bbef | 967 | |
4218a32f | 968 | if (!old_crtc_state->active || |
2465ff62 | 969 | !drm_atomic_crtc_needs_modeset(old_conn_state->crtc->state)) |
eab3bbef DV |
970 | continue; |
971 | ||
46df9adb | 972 | encoder = old_conn_state->best_encoder; |
623369e5 | 973 | |
46df9adb RC |
974 | /* We shouldn't get this far if we didn't previously have |
975 | * an encoder.. but WARN_ON() rather than explode. | |
976 | */ | |
977 | if (WARN_ON(!encoder)) | |
623369e5 DV |
978 | continue; |
979 | ||
980 | funcs = encoder->helper_private; | |
981 | ||
17a38d9c DV |
982 | DRM_DEBUG_ATOMIC("disabling [ENCODER:%d:%s]\n", |
983 | encoder->base.id, encoder->name); | |
95d6eb3b | 984 | |
623369e5 DV |
985 | /* |
986 | * Each encoder has at most one connector (since we always steal | |
f98bd3ef | 987 | * it away), so we won't call disable hooks twice. |
623369e5 | 988 | */ |
862e686c | 989 | drm_bridge_disable(encoder->bridge); |
623369e5 DV |
990 | |
991 | /* Right function depends upon target state. */ | |
2827635e | 992 | if (funcs) { |
415c3ac3 | 993 | if (new_conn_state->crtc && funcs->prepare) |
2827635e NT |
994 | funcs->prepare(encoder); |
995 | else if (funcs->disable) | |
996 | funcs->disable(encoder); | |
997 | else if (funcs->dpms) | |
998 | funcs->dpms(encoder, DRM_MODE_DPMS_OFF); | |
999 | } | |
623369e5 | 1000 | |
862e686c | 1001 | drm_bridge_post_disable(encoder->bridge); |
623369e5 DV |
1002 | } |
1003 | ||
415c3ac3 | 1004 | for_each_oldnew_crtc_in_state(old_state, crtc, old_crtc_state, new_crtc_state, i) { |
b5ceff20 | 1005 | const struct drm_crtc_helper_funcs *funcs; |
84014b0a | 1006 | int ret; |
623369e5 DV |
1007 | |
1008 | /* Shut down everything that needs a full modeset. */ | |
415c3ac3 | 1009 | if (!drm_atomic_crtc_needs_modeset(new_crtc_state)) |
eab3bbef DV |
1010 | continue; |
1011 | ||
1012 | if (!old_crtc_state->active) | |
623369e5 DV |
1013 | continue; |
1014 | ||
1015 | funcs = crtc->helper_private; | |
1016 | ||
fa3ab4c2 VS |
1017 | DRM_DEBUG_ATOMIC("disabling [CRTC:%d:%s]\n", |
1018 | crtc->base.id, crtc->name); | |
95d6eb3b DV |
1019 | |
1020 | ||
623369e5 | 1021 | /* Right function depends upon target state. */ |
415c3ac3 | 1022 | if (new_crtc_state->enable && funcs->prepare) |
623369e5 | 1023 | funcs->prepare(crtc); |
c9ac8b4c LY |
1024 | else if (funcs->atomic_disable) |
1025 | funcs->atomic_disable(crtc, old_crtc_state); | |
623369e5 DV |
1026 | else if (funcs->disable) |
1027 | funcs->disable(crtc); | |
1028 | else | |
1029 | funcs->dpms(crtc, DRM_MODE_DPMS_OFF); | |
84014b0a DV |
1030 | |
1031 | if (!(dev->irq_enabled && dev->num_crtcs)) | |
1032 | continue; | |
1033 | ||
1034 | ret = drm_crtc_vblank_get(crtc); | |
1035 | WARN_ONCE(ret != -EINVAL, "driver forgot to call drm_crtc_vblank_off()\n"); | |
1036 | if (ret == 0) | |
1037 | drm_crtc_vblank_put(crtc); | |
623369e5 DV |
1038 | } |
1039 | } | |
1040 | ||
4c18d301 DV |
1041 | /** |
1042 | * drm_atomic_helper_update_legacy_modeset_state - update legacy modeset state | |
1043 | * @dev: DRM device | |
1044 | * @old_state: atomic state object with old state structures | |
1045 | * | |
1046 | * This function updates all the various legacy modeset state pointers in | |
1047 | * connectors, encoders and crtcs. It also updates the timestamping constants | |
1048 | * used for precise vblank timestamps by calling | |
1049 | * drm_calc_timestamping_constants(). | |
1050 | * | |
1051 | * Drivers can use this for building their own atomic commit if they don't have | |
1052 | * a pure helper-based modeset implementation. | |
2e2b96ef DV |
1053 | * |
1054 | * Since these updates are not synchronized with lockings, only code paths | |
1055 | * called from &drm_mode_config_helper_funcs.atomic_commit_tail can look at the | |
1056 | * legacy state filled out by this helper. Defacto this means this helper and | |
1057 | * the legacy state pointers are only really useful for transitioning an | |
1058 | * existing driver to the atomic world. | |
4c18d301 DV |
1059 | */ |
1060 | void | |
1061 | drm_atomic_helper_update_legacy_modeset_state(struct drm_device *dev, | |
1062 | struct drm_atomic_state *old_state) | |
623369e5 | 1063 | { |
df63b999 | 1064 | struct drm_connector *connector; |
415c3ac3 | 1065 | struct drm_connector_state *old_conn_state, *new_conn_state; |
df63b999 | 1066 | struct drm_crtc *crtc; |
415c3ac3 | 1067 | struct drm_crtc_state *new_crtc_state; |
623369e5 DV |
1068 | int i; |
1069 | ||
8c10342c | 1070 | /* clear out existing links and update dpms */ |
415c3ac3 | 1071 | for_each_oldnew_connector_in_state(old_state, connector, old_conn_state, new_conn_state, i) { |
8c10342c ML |
1072 | if (connector->encoder) { |
1073 | WARN_ON(!connector->encoder->crtc); | |
1074 | ||
1075 | connector->encoder->crtc = NULL; | |
1076 | connector->encoder = NULL; | |
1077 | } | |
623369e5 | 1078 | |
415c3ac3 | 1079 | crtc = new_conn_state->crtc; |
8c10342c ML |
1080 | if ((!crtc && old_conn_state->crtc) || |
1081 | (crtc && drm_atomic_crtc_needs_modeset(crtc->state))) { | |
8c10342c | 1082 | int mode = DRM_MODE_DPMS_OFF; |
623369e5 | 1083 | |
8c10342c ML |
1084 | if (crtc && crtc->state->active) |
1085 | mode = DRM_MODE_DPMS_ON; | |
1086 | ||
1087 | connector->dpms = mode; | |
8c10342c | 1088 | } |
623369e5 DV |
1089 | } |
1090 | ||
1091 | /* set new links */ | |
415c3ac3 ML |
1092 | for_each_new_connector_in_state(old_state, connector, new_conn_state, i) { |
1093 | if (!new_conn_state->crtc) | |
623369e5 DV |
1094 | continue; |
1095 | ||
415c3ac3 | 1096 | if (WARN_ON(!new_conn_state->best_encoder)) |
623369e5 DV |
1097 | continue; |
1098 | ||
415c3ac3 ML |
1099 | connector->encoder = new_conn_state->best_encoder; |
1100 | connector->encoder->crtc = new_conn_state->crtc; | |
623369e5 DV |
1101 | } |
1102 | ||
1103 | /* set legacy state in the crtc structure */ | |
415c3ac3 | 1104 | for_each_new_crtc_in_state(old_state, crtc, new_crtc_state, i) { |
2660801f | 1105 | struct drm_plane *primary = crtc->primary; |
b4d93679 | 1106 | struct drm_plane_state *new_plane_state; |
2660801f | 1107 | |
415c3ac3 ML |
1108 | crtc->mode = new_crtc_state->mode; |
1109 | crtc->enabled = new_crtc_state->enable; | |
2660801f | 1110 | |
b4d93679 ML |
1111 | new_plane_state = |
1112 | drm_atomic_get_new_plane_state(old_state, primary); | |
1113 | ||
1114 | if (new_plane_state && new_plane_state->crtc == crtc) { | |
1115 | crtc->x = new_plane_state->src_x >> 16; | |
1116 | crtc->y = new_plane_state->src_y >> 16; | |
2660801f | 1117 | } |
3d51d2d2 | 1118 | |
415c3ac3 | 1119 | if (new_crtc_state->enable) |
3d51d2d2 | 1120 | drm_calc_timestamping_constants(crtc, |
415c3ac3 | 1121 | &new_crtc_state->adjusted_mode); |
623369e5 DV |
1122 | } |
1123 | } | |
4c18d301 | 1124 | EXPORT_SYMBOL(drm_atomic_helper_update_legacy_modeset_state); |
623369e5 DV |
1125 | |
1126 | static void | |
1127 | crtc_set_mode(struct drm_device *dev, struct drm_atomic_state *old_state) | |
1128 | { | |
df63b999 | 1129 | struct drm_crtc *crtc; |
415c3ac3 | 1130 | struct drm_crtc_state *new_crtc_state; |
df63b999 | 1131 | struct drm_connector *connector; |
415c3ac3 | 1132 | struct drm_connector_state *new_conn_state; |
623369e5 DV |
1133 | int i; |
1134 | ||
415c3ac3 | 1135 | for_each_new_crtc_in_state(old_state, crtc, new_crtc_state, i) { |
b5ceff20 | 1136 | const struct drm_crtc_helper_funcs *funcs; |
623369e5 | 1137 | |
415c3ac3 | 1138 | if (!new_crtc_state->mode_changed) |
623369e5 DV |
1139 | continue; |
1140 | ||
1141 | funcs = crtc->helper_private; | |
1142 | ||
415c3ac3 | 1143 | if (new_crtc_state->enable && funcs->mode_set_nofb) { |
fa3ab4c2 VS |
1144 | DRM_DEBUG_ATOMIC("modeset on [CRTC:%d:%s]\n", |
1145 | crtc->base.id, crtc->name); | |
95d6eb3b | 1146 | |
623369e5 | 1147 | funcs->mode_set_nofb(crtc); |
95d6eb3b | 1148 | } |
623369e5 DV |
1149 | } |
1150 | ||
415c3ac3 | 1151 | for_each_new_connector_in_state(old_state, connector, new_conn_state, i) { |
b5ceff20 | 1152 | const struct drm_encoder_helper_funcs *funcs; |
623369e5 DV |
1153 | struct drm_encoder *encoder; |
1154 | struct drm_display_mode *mode, *adjusted_mode; | |
1155 | ||
415c3ac3 | 1156 | if (!new_conn_state->best_encoder) |
623369e5 DV |
1157 | continue; |
1158 | ||
415c3ac3 | 1159 | encoder = new_conn_state->best_encoder; |
623369e5 | 1160 | funcs = encoder->helper_private; |
415c3ac3 | 1161 | new_crtc_state = new_conn_state->crtc->state; |
623369e5 DV |
1162 | mode = &new_crtc_state->mode; |
1163 | adjusted_mode = &new_crtc_state->adjusted_mode; | |
1164 | ||
eab3bbef DV |
1165 | if (!new_crtc_state->mode_changed) |
1166 | continue; | |
1167 | ||
17a38d9c DV |
1168 | DRM_DEBUG_ATOMIC("modeset on [ENCODER:%d:%s]\n", |
1169 | encoder->base.id, encoder->name); | |
95d6eb3b | 1170 | |
623369e5 DV |
1171 | /* |
1172 | * Each encoder has at most one connector (since we always steal | |
f98bd3ef | 1173 | * it away), so we won't call mode_set hooks twice. |
623369e5 | 1174 | */ |
fe4a11c9 PZ |
1175 | if (funcs && funcs->atomic_mode_set) { |
1176 | funcs->atomic_mode_set(encoder, new_crtc_state, | |
415c3ac3 | 1177 | new_conn_state); |
fe4a11c9 | 1178 | } else if (funcs && funcs->mode_set) { |
c982bd90 | 1179 | funcs->mode_set(encoder, mode, adjusted_mode); |
fe4a11c9 | 1180 | } |
623369e5 | 1181 | |
862e686c | 1182 | drm_bridge_mode_set(encoder->bridge, mode, adjusted_mode); |
623369e5 DV |
1183 | } |
1184 | } | |
1185 | ||
1186 | /** | |
1af434a9 | 1187 | * drm_atomic_helper_commit_modeset_disables - modeset commit to disable outputs |
623369e5 | 1188 | * @dev: DRM device |
a072f809 | 1189 | * @old_state: atomic state object with old state structures |
623369e5 | 1190 | * |
1af434a9 | 1191 | * This function shuts down all the outputs that need to be shut down and |
623369e5 | 1192 | * prepares them (if required) with the new mode. |
1af434a9 | 1193 | * |
60acc4eb | 1194 | * For compatibility with legacy crtc helpers this should be called before |
1af434a9 DV |
1195 | * drm_atomic_helper_commit_planes(), which is what the default commit function |
1196 | * does. But drivers with different needs can group the modeset commits together | |
1197 | * and do the plane commits at the end. This is useful for drivers doing runtime | |
1198 | * PM since planes updates then only happen when the CRTC is actually enabled. | |
623369e5 | 1199 | */ |
1af434a9 DV |
1200 | void drm_atomic_helper_commit_modeset_disables(struct drm_device *dev, |
1201 | struct drm_atomic_state *old_state) | |
623369e5 | 1202 | { |
a072f809 | 1203 | disable_outputs(dev, old_state); |
4c18d301 DV |
1204 | |
1205 | drm_atomic_helper_update_legacy_modeset_state(dev, old_state); | |
1206 | ||
a072f809 | 1207 | crtc_set_mode(dev, old_state); |
623369e5 | 1208 | } |
1af434a9 | 1209 | EXPORT_SYMBOL(drm_atomic_helper_commit_modeset_disables); |
623369e5 | 1210 | |
935774cd BS |
1211 | static void drm_atomic_helper_commit_writebacks(struct drm_device *dev, |
1212 | struct drm_atomic_state *old_state) | |
1213 | { | |
1214 | struct drm_connector *connector; | |
1215 | struct drm_connector_state *new_conn_state; | |
1216 | int i; | |
1217 | ||
1218 | for_each_new_connector_in_state(old_state, connector, new_conn_state, i) { | |
1219 | const struct drm_connector_helper_funcs *funcs; | |
1220 | ||
1221 | funcs = connector->helper_private; | |
814bde99 BB |
1222 | if (!funcs->atomic_commit) |
1223 | continue; | |
935774cd BS |
1224 | |
1225 | if (new_conn_state->writeback_job && new_conn_state->writeback_job->fb) { | |
1226 | WARN_ON(connector->connector_type != DRM_MODE_CONNECTOR_WRITEBACK); | |
425132fd | 1227 | funcs->atomic_commit(connector, new_conn_state); |
935774cd BS |
1228 | } |
1229 | } | |
1230 | } | |
1231 | ||
623369e5 | 1232 | /** |
1af434a9 | 1233 | * drm_atomic_helper_commit_modeset_enables - modeset commit to enable outputs |
623369e5 DV |
1234 | * @dev: DRM device |
1235 | * @old_state: atomic state object with old state structures | |
1236 | * | |
1af434a9 DV |
1237 | * This function enables all the outputs with the new configuration which had to |
1238 | * be turned off for the update. | |
1239 | * | |
60acc4eb | 1240 | * For compatibility with legacy crtc helpers this should be called after |
1af434a9 DV |
1241 | * drm_atomic_helper_commit_planes(), which is what the default commit function |
1242 | * does. But drivers with different needs can group the modeset commits together | |
1243 | * and do the plane commits at the end. This is useful for drivers doing runtime | |
1244 | * PM since planes updates then only happen when the CRTC is actually enabled. | |
623369e5 | 1245 | */ |
1af434a9 DV |
1246 | void drm_atomic_helper_commit_modeset_enables(struct drm_device *dev, |
1247 | struct drm_atomic_state *old_state) | |
623369e5 | 1248 | { |
df63b999 | 1249 | struct drm_crtc *crtc; |
0b20a0f8 | 1250 | struct drm_crtc_state *old_crtc_state; |
415c3ac3 | 1251 | struct drm_crtc_state *new_crtc_state; |
df63b999 | 1252 | struct drm_connector *connector; |
415c3ac3 | 1253 | struct drm_connector_state *new_conn_state; |
623369e5 DV |
1254 | int i; |
1255 | ||
0b20a0f8 | 1256 | for_each_oldnew_crtc_in_state(old_state, crtc, old_crtc_state, new_crtc_state, i) { |
b5ceff20 | 1257 | const struct drm_crtc_helper_funcs *funcs; |
623369e5 DV |
1258 | |
1259 | /* Need to filter out CRTCs where only planes change. */ | |
415c3ac3 | 1260 | if (!drm_atomic_crtc_needs_modeset(new_crtc_state)) |
eab3bbef DV |
1261 | continue; |
1262 | ||
415c3ac3 | 1263 | if (!new_crtc_state->active) |
623369e5 DV |
1264 | continue; |
1265 | ||
1266 | funcs = crtc->helper_private; | |
1267 | ||
415c3ac3 | 1268 | if (new_crtc_state->enable) { |
fa3ab4c2 VS |
1269 | DRM_DEBUG_ATOMIC("enabling [CRTC:%d:%s]\n", |
1270 | crtc->base.id, crtc->name); | |
95d6eb3b | 1271 | |
0b20a0f8 LP |
1272 | if (funcs->atomic_enable) |
1273 | funcs->atomic_enable(crtc, old_crtc_state); | |
ee0a89cf DV |
1274 | else |
1275 | funcs->commit(crtc); | |
1276 | } | |
623369e5 DV |
1277 | } |
1278 | ||
415c3ac3 | 1279 | for_each_new_connector_in_state(old_state, connector, new_conn_state, i) { |
b5ceff20 | 1280 | const struct drm_encoder_helper_funcs *funcs; |
623369e5 DV |
1281 | struct drm_encoder *encoder; |
1282 | ||
415c3ac3 | 1283 | if (!new_conn_state->best_encoder) |
623369e5 DV |
1284 | continue; |
1285 | ||
415c3ac3 ML |
1286 | if (!new_conn_state->crtc->state->active || |
1287 | !drm_atomic_crtc_needs_modeset(new_conn_state->crtc->state)) | |
eab3bbef DV |
1288 | continue; |
1289 | ||
415c3ac3 | 1290 | encoder = new_conn_state->best_encoder; |
623369e5 DV |
1291 | funcs = encoder->helper_private; |
1292 | ||
17a38d9c DV |
1293 | DRM_DEBUG_ATOMIC("enabling [ENCODER:%d:%s]\n", |
1294 | encoder->base.id, encoder->name); | |
95d6eb3b | 1295 | |
623369e5 DV |
1296 | /* |
1297 | * Each encoder has at most one connector (since we always steal | |
f98bd3ef | 1298 | * it away), so we won't call enable hooks twice. |
623369e5 | 1299 | */ |
862e686c | 1300 | drm_bridge_pre_enable(encoder->bridge); |
623369e5 | 1301 | |
2827635e NT |
1302 | if (funcs) { |
1303 | if (funcs->enable) | |
1304 | funcs->enable(encoder); | |
1305 | else if (funcs->commit) | |
1306 | funcs->commit(encoder); | |
1307 | } | |
623369e5 | 1308 | |
862e686c | 1309 | drm_bridge_enable(encoder->bridge); |
623369e5 | 1310 | } |
935774cd BS |
1311 | |
1312 | drm_atomic_helper_commit_writebacks(dev, old_state); | |
623369e5 | 1313 | } |
1af434a9 | 1314 | EXPORT_SYMBOL(drm_atomic_helper_commit_modeset_enables); |
623369e5 | 1315 | |
4c5b7f3a RC |
1316 | /** |
1317 | * drm_atomic_helper_wait_for_fences - wait for fences stashed in plane state | |
1318 | * @dev: DRM device | |
1319 | * @state: atomic state object with old state structures | |
1ea0c02e DV |
1320 | * @pre_swap: If true, do an interruptible wait, and @state is the new state. |
1321 | * Otherwise @state is the old state. | |
4c5b7f3a RC |
1322 | * |
1323 | * For implicit sync, driver should fish the exclusive fence out from the | |
1324 | * incoming fb's and stash it in the drm_plane_state. This is called after | |
1325 | * drm_atomic_helper_swap_state() so it uses the current plane state (and | |
1326 | * just uses the atomic state to find the changed planes) | |
f6ce410a | 1327 | * |
1ea0c02e DV |
1328 | * Note that @pre_swap is needed since the point where we block for fences moves |
1329 | * around depending upon whether an atomic commit is blocking or | |
42590372 GP |
1330 | * non-blocking. For non-blocking commit all waiting needs to happen after |
1331 | * drm_atomic_helper_swap_state() is called, but for blocking commits we want | |
1ea0c02e DV |
1332 | * to wait **before** we do anything that can't be easily rolled back. That is |
1333 | * before we call drm_atomic_helper_swap_state(). | |
1334 | * | |
f54d1867 | 1335 | * Returns zero if success or < 0 if dma_fence_wait() fails. |
4c5b7f3a | 1336 | */ |
f6ce410a GP |
1337 | int drm_atomic_helper_wait_for_fences(struct drm_device *dev, |
1338 | struct drm_atomic_state *state, | |
1339 | bool pre_swap) | |
e2330f07 | 1340 | { |
df63b999 | 1341 | struct drm_plane *plane; |
415c3ac3 | 1342 | struct drm_plane_state *new_plane_state; |
f6ce410a | 1343 | int i, ret; |
e2330f07 | 1344 | |
415c3ac3 ML |
1345 | for_each_new_plane_in_state(state, plane, new_plane_state, i) { |
1346 | if (!new_plane_state->fence) | |
e2330f07 DV |
1347 | continue; |
1348 | ||
415c3ac3 | 1349 | WARN_ON(!new_plane_state->fb); |
f6ce410a GP |
1350 | |
1351 | /* | |
1352 | * If waiting for fences pre-swap (ie: nonblock), userspace can | |
1353 | * still interrupt the operation. Instead of blocking until the | |
1354 | * timer expires, make the wait interruptible. | |
1355 | */ | |
415c3ac3 | 1356 | ret = dma_fence_wait(new_plane_state->fence, pre_swap); |
f6ce410a GP |
1357 | if (ret) |
1358 | return ret; | |
e2330f07 | 1359 | |
415c3ac3 ML |
1360 | dma_fence_put(new_plane_state->fence); |
1361 | new_plane_state->fence = NULL; | |
e2330f07 | 1362 | } |
f6ce410a GP |
1363 | |
1364 | return 0; | |
e2330f07 | 1365 | } |
4c5b7f3a | 1366 | EXPORT_SYMBOL(drm_atomic_helper_wait_for_fences); |
e2330f07 | 1367 | |
5ee3229c RC |
1368 | /** |
1369 | * drm_atomic_helper_wait_for_vblanks - wait for vblank on crtcs | |
1370 | * @dev: DRM device | |
1371 | * @old_state: atomic state object with old state structures | |
1372 | * | |
1373 | * Helper to, after atomic commit, wait for vblanks on all effected | |
1374 | * crtcs (ie. before cleaning up old framebuffers using | |
01086487 | 1375 | * drm_atomic_helper_cleanup_planes()). It will only wait on CRTCs where the |
ab58e338 DV |
1376 | * framebuffers have actually changed to optimize for the legacy cursor and |
1377 | * plane update use-case. | |
01086487 BB |
1378 | * |
1379 | * Drivers using the nonblocking commit tracking support initialized by calling | |
1380 | * drm_atomic_helper_setup_commit() should look at | |
1381 | * drm_atomic_helper_wait_for_flip_done() as an alternative. | |
5ee3229c RC |
1382 | */ |
1383 | void | |
1384 | drm_atomic_helper_wait_for_vblanks(struct drm_device *dev, | |
1385 | struct drm_atomic_state *old_state) | |
623369e5 DV |
1386 | { |
1387 | struct drm_crtc *crtc; | |
415c3ac3 | 1388 | struct drm_crtc_state *old_crtc_state, *new_crtc_state; |
623369e5 | 1389 | int i, ret; |
bdc57146 | 1390 | unsigned crtc_mask = 0; |
623369e5 | 1391 | |
bdc57146 ML |
1392 | /* |
1393 | * Legacy cursor ioctls are completely unsynced, and userspace | |
1394 | * relies on that (by doing tons of cursor updates). | |
1395 | */ | |
1396 | if (old_state->legacy_cursor_update) | |
1397 | return; | |
623369e5 | 1398 | |
415c3ac3 | 1399 | for_each_oldnew_crtc_in_state(old_state, crtc, old_crtc_state, new_crtc_state, i) { |
a76dfe35 | 1400 | if (!new_crtc_state->active) |
ab58e338 DV |
1401 | continue; |
1402 | ||
623369e5 DV |
1403 | ret = drm_crtc_vblank_get(crtc); |
1404 | if (ret != 0) | |
1405 | continue; | |
1406 | ||
bdc57146 ML |
1407 | crtc_mask |= drm_crtc_mask(crtc); |
1408 | old_state->crtcs[i].last_vblank_count = drm_crtc_vblank_count(crtc); | |
623369e5 DV |
1409 | } |
1410 | ||
415c3ac3 | 1411 | for_each_old_crtc_in_state(old_state, crtc, old_crtc_state, i) { |
bdc57146 | 1412 | if (!(crtc_mask & drm_crtc_mask(crtc))) |
623369e5 DV |
1413 | continue; |
1414 | ||
1415 | ret = wait_event_timeout(dev->vblank[i].queue, | |
bdc57146 | 1416 | old_state->crtcs[i].last_vblank_count != |
d4853630 | 1417 | drm_crtc_vblank_count(crtc), |
623369e5 DV |
1418 | msecs_to_jiffies(50)); |
1419 | ||
6ac7c548 RK |
1420 | WARN(!ret, "[CRTC:%d:%s] vblank wait timed out\n", |
1421 | crtc->base.id, crtc->name); | |
8d4d0d70 | 1422 | |
623369e5 DV |
1423 | drm_crtc_vblank_put(crtc); |
1424 | } | |
1425 | } | |
5ee3229c | 1426 | EXPORT_SYMBOL(drm_atomic_helper_wait_for_vblanks); |
623369e5 | 1427 | |
01086487 BB |
1428 | /** |
1429 | * drm_atomic_helper_wait_for_flip_done - wait for all page flips to be done | |
1430 | * @dev: DRM device | |
1431 | * @old_state: atomic state object with old state structures | |
1432 | * | |
1433 | * Helper to, after atomic commit, wait for page flips on all effected | |
1434 | * crtcs (ie. before cleaning up old framebuffers using | |
1435 | * drm_atomic_helper_cleanup_planes()). Compared to | |
1436 | * drm_atomic_helper_wait_for_vblanks() this waits for the completion of on all | |
1437 | * CRTCs, assuming that cursors-only updates are signalling their completion | |
1438 | * immediately (or using a different path). | |
1439 | * | |
1440 | * This requires that drivers use the nonblocking commit tracking support | |
1441 | * initialized using drm_atomic_helper_setup_commit(). | |
1442 | */ | |
1443 | void drm_atomic_helper_wait_for_flip_done(struct drm_device *dev, | |
1444 | struct drm_atomic_state *old_state) | |
1445 | { | |
01086487 BB |
1446 | struct drm_crtc *crtc; |
1447 | int i; | |
1448 | ||
4364bcb2 LL |
1449 | for (i = 0; i < dev->mode_config.num_crtc; i++) { |
1450 | struct drm_crtc_commit *commit = old_state->crtcs[i].commit; | |
01086487 BB |
1451 | int ret; |
1452 | ||
4364bcb2 LL |
1453 | crtc = old_state->crtcs[i].ptr; |
1454 | ||
1455 | if (!crtc || !commit) | |
01086487 BB |
1456 | continue; |
1457 | ||
1458 | ret = wait_for_completion_timeout(&commit->flip_done, 10 * HZ); | |
1459 | if (ret == 0) | |
1460 | DRM_ERROR("[CRTC:%d:%s] flip_done timed out\n", | |
1461 | crtc->base.id, crtc->name); | |
1462 | } | |
1463 | } | |
1464 | EXPORT_SYMBOL(drm_atomic_helper_wait_for_flip_done); | |
1465 | ||
623369e5 | 1466 | /** |
9f2a7950 | 1467 | * drm_atomic_helper_commit_tail - commit atomic update to hardware |
1ea0c02e | 1468 | * @old_state: atomic state object with old state structures |
623369e5 | 1469 | * |
6806cdf9 | 1470 | * This is the default implementation for the |
81a099ac MR |
1471 | * &drm_mode_config_helper_funcs.atomic_commit_tail hook, for drivers |
1472 | * that do not support runtime_pm or do not need the CRTC to be | |
1473 | * enabled to perform a commit. Otherwise, see | |
1474 | * drm_atomic_helper_commit_tail_rpm(). | |
623369e5 | 1475 | * |
9f2a7950 | 1476 | * Note that the default ordering of how the various stages are called is to |
81a099ac | 1477 | * match the legacy modeset helper library closest. |
9f2a7950 | 1478 | */ |
1ea0c02e | 1479 | void drm_atomic_helper_commit_tail(struct drm_atomic_state *old_state) |
9f2a7950 | 1480 | { |
1ea0c02e | 1481 | struct drm_device *dev = old_state->dev; |
9f2a7950 | 1482 | |
1ea0c02e | 1483 | drm_atomic_helper_commit_modeset_disables(dev, old_state); |
9f2a7950 | 1484 | |
1ea0c02e | 1485 | drm_atomic_helper_commit_planes(dev, old_state, 0); |
9f2a7950 | 1486 | |
1ea0c02e | 1487 | drm_atomic_helper_commit_modeset_enables(dev, old_state); |
9f2a7950 | 1488 | |
6fb42b66 BB |
1489 | drm_atomic_helper_fake_vblank(old_state); |
1490 | ||
1ea0c02e | 1491 | drm_atomic_helper_commit_hw_done(old_state); |
9f2a7950 | 1492 | |
1ea0c02e | 1493 | drm_atomic_helper_wait_for_vblanks(dev, old_state); |
9f2a7950 | 1494 | |
1ea0c02e | 1495 | drm_atomic_helper_cleanup_planes(dev, old_state); |
9f2a7950 DV |
1496 | } |
1497 | EXPORT_SYMBOL(drm_atomic_helper_commit_tail); | |
1498 | ||
81a099ac MR |
1499 | /** |
1500 | * drm_atomic_helper_commit_tail_rpm - commit atomic update to hardware | |
1501 | * @old_state: new modeset state to be committed | |
1502 | * | |
1503 | * This is an alternative implementation for the | |
1504 | * &drm_mode_config_helper_funcs.atomic_commit_tail hook, for drivers | |
1505 | * that support runtime_pm or need the CRTC to be enabled to perform a | |
1506 | * commit. Otherwise, one should use the default implementation | |
1507 | * drm_atomic_helper_commit_tail(). | |
1508 | */ | |
1509 | void drm_atomic_helper_commit_tail_rpm(struct drm_atomic_state *old_state) | |
1510 | { | |
1511 | struct drm_device *dev = old_state->dev; | |
1512 | ||
1513 | drm_atomic_helper_commit_modeset_disables(dev, old_state); | |
1514 | ||
1515 | drm_atomic_helper_commit_modeset_enables(dev, old_state); | |
1516 | ||
1517 | drm_atomic_helper_commit_planes(dev, old_state, | |
1518 | DRM_PLANE_COMMIT_ACTIVE_ONLY); | |
1519 | ||
6fb42b66 BB |
1520 | drm_atomic_helper_fake_vblank(old_state); |
1521 | ||
81a099ac MR |
1522 | drm_atomic_helper_commit_hw_done(old_state); |
1523 | ||
1524 | drm_atomic_helper_wait_for_vblanks(dev, old_state); | |
1525 | ||
1526 | drm_atomic_helper_cleanup_planes(dev, old_state); | |
1527 | } | |
1528 | EXPORT_SYMBOL(drm_atomic_helper_commit_tail_rpm); | |
1529 | ||
1ea0c02e | 1530 | static void commit_tail(struct drm_atomic_state *old_state) |
9f2a7950 | 1531 | { |
1ea0c02e | 1532 | struct drm_device *dev = old_state->dev; |
a4b10cce | 1533 | const struct drm_mode_config_helper_funcs *funcs; |
9f2a7950 DV |
1534 | |
1535 | funcs = dev->mode_config.helper_private; | |
1536 | ||
1ea0c02e | 1537 | drm_atomic_helper_wait_for_fences(dev, old_state, false); |
9f2a7950 | 1538 | |
1ea0c02e | 1539 | drm_atomic_helper_wait_for_dependencies(old_state); |
9f2a7950 DV |
1540 | |
1541 | if (funcs && funcs->atomic_commit_tail) | |
1ea0c02e | 1542 | funcs->atomic_commit_tail(old_state); |
9f2a7950 | 1543 | else |
1ea0c02e | 1544 | drm_atomic_helper_commit_tail(old_state); |
9f2a7950 | 1545 | |
1ea0c02e | 1546 | drm_atomic_helper_commit_cleanup_done(old_state); |
9f2a7950 | 1547 | |
1ea0c02e | 1548 | drm_atomic_state_put(old_state); |
9f2a7950 DV |
1549 | } |
1550 | ||
1551 | static void commit_work(struct work_struct *work) | |
1552 | { | |
1553 | struct drm_atomic_state *state = container_of(work, | |
1554 | struct drm_atomic_state, | |
1555 | commit_work); | |
1556 | commit_tail(state); | |
1557 | } | |
1558 | ||
fef9df8b GP |
1559 | /** |
1560 | * drm_atomic_helper_async_check - check if state can be commited asynchronously | |
1561 | * @dev: DRM device | |
1562 | * @state: the driver state object | |
1563 | * | |
1564 | * This helper will check if it is possible to commit the state asynchronously. | |
1565 | * Async commits are not supposed to swap the states like normal sync commits | |
1566 | * but just do in-place changes on the current state. | |
1567 | * | |
1568 | * It will return 0 if the commit can happen in an asynchronous fashion or error | |
1569 | * if not. Note that error just mean it can't be commited asynchronously, if it | |
1570 | * fails the commit should be treated like a normal synchronous commit. | |
1571 | */ | |
1572 | int drm_atomic_helper_async_check(struct drm_device *dev, | |
1573 | struct drm_atomic_state *state) | |
1574 | { | |
1575 | struct drm_crtc *crtc; | |
1576 | struct drm_crtc_state *crtc_state; | |
de2d8db3 BB |
1577 | struct drm_plane *plane = NULL; |
1578 | struct drm_plane_state *old_plane_state = NULL; | |
1579 | struct drm_plane_state *new_plane_state = NULL; | |
fef9df8b | 1580 | const struct drm_plane_helper_funcs *funcs; |
669c9215 | 1581 | int i, n_planes = 0; |
fef9df8b GP |
1582 | |
1583 | for_each_new_crtc_in_state(state, crtc, crtc_state, i) { | |
1584 | if (drm_atomic_crtc_needs_modeset(crtc_state)) | |
1585 | return -EINVAL; | |
1586 | } | |
1587 | ||
669c9215 | 1588 | for_each_oldnew_plane_in_state(state, plane, old_plane_state, new_plane_state, i) |
fef9df8b | 1589 | n_planes++; |
fef9df8b GP |
1590 | |
1591 | /* FIXME: we support only single plane updates for now */ | |
669c9215 | 1592 | if (n_planes != 1) |
fef9df8b GP |
1593 | return -EINVAL; |
1594 | ||
603ba2df BB |
1595 | if (!new_plane_state->crtc || |
1596 | old_plane_state->crtc != new_plane_state->crtc) | |
fef9df8b GP |
1597 | return -EINVAL; |
1598 | ||
1599 | funcs = plane->helper_private; | |
1600 | if (!funcs->atomic_async_update) | |
1601 | return -EINVAL; | |
1602 | ||
669c9215 | 1603 | if (new_plane_state->fence) |
fef9df8b GP |
1604 | return -EINVAL; |
1605 | ||
1606 | /* | |
1607 | * Don't do an async update if there is an outstanding commit modifying | |
1608 | * the plane. This prevents our async update's changes from getting | |
1609 | * overridden by a previous synchronous update's state. | |
1610 | */ | |
669c9215 ML |
1611 | if (old_plane_state->commit && |
1612 | !try_wait_for_completion(&old_plane_state->commit->hw_done)) | |
1613 | return -EBUSY; | |
fef9df8b | 1614 | |
669c9215 | 1615 | return funcs->atomic_async_check(plane, new_plane_state); |
fef9df8b GP |
1616 | } |
1617 | EXPORT_SYMBOL(drm_atomic_helper_async_check); | |
1618 | ||
1619 | /** | |
1620 | * drm_atomic_helper_async_commit - commit state asynchronously | |
1621 | * @dev: DRM device | |
1622 | * @state: the driver state object | |
1623 | * | |
1624 | * This function commits a state asynchronously, i.e., not vblank | |
1625 | * synchronized. It should be used on a state only when | |
1626 | * drm_atomic_async_check() succeeds. Async commits are not supposed to swap | |
1627 | * the states like normal sync commits, but just do in-place changes on the | |
1628 | * current state. | |
1629 | */ | |
1630 | void drm_atomic_helper_async_commit(struct drm_device *dev, | |
1631 | struct drm_atomic_state *state) | |
1632 | { | |
1633 | struct drm_plane *plane; | |
1634 | struct drm_plane_state *plane_state; | |
1635 | const struct drm_plane_helper_funcs *funcs; | |
1636 | int i; | |
1637 | ||
1638 | for_each_new_plane_in_state(state, plane, plane_state, i) { | |
1639 | funcs = plane->helper_private; | |
1640 | funcs->atomic_async_update(plane, plane_state); | |
02edfd9c BB |
1641 | |
1642 | /* | |
1643 | * ->atomic_async_update() is supposed to update the | |
1644 | * plane->state in-place, make sure at least common | |
1645 | * properties have been properly updated. | |
1646 | */ | |
1647 | WARN_ON_ONCE(plane->state->fb != plane_state->fb); | |
1648 | WARN_ON_ONCE(plane->state->crtc_x != plane_state->crtc_x); | |
1649 | WARN_ON_ONCE(plane->state->crtc_y != plane_state->crtc_y); | |
1650 | WARN_ON_ONCE(plane->state->src_x != plane_state->src_x); | |
1651 | WARN_ON_ONCE(plane->state->src_y != plane_state->src_y); | |
fef9df8b GP |
1652 | } |
1653 | } | |
1654 | EXPORT_SYMBOL(drm_atomic_helper_async_commit); | |
1655 | ||
9f2a7950 DV |
1656 | /** |
1657 | * drm_atomic_helper_commit - commit validated state object | |
1658 | * @dev: DRM device | |
1659 | * @state: the driver state object | |
1660 | * @nonblock: whether nonblocking behavior is requested. | |
1661 | * | |
1662 | * This function commits a with drm_atomic_helper_check() pre-validated state | |
1663 | * object. This can still fail when e.g. the framebuffer reservation fails. This | |
1664 | * function implements nonblocking commits, using | |
1665 | * drm_atomic_helper_setup_commit() and related functions. | |
1666 | * | |
9f2a7950 | 1667 | * Committing the actual hardware state is done through the |
6806cdf9 DV |
1668 | * &drm_mode_config_helper_funcs.atomic_commit_tail callback, or it's default |
1669 | * implementation drm_atomic_helper_commit_tail(). | |
6e48ae32 | 1670 | * |
c39032a8 | 1671 | * RETURNS: |
623369e5 DV |
1672 | * Zero for success or -errno. |
1673 | */ | |
1674 | int drm_atomic_helper_commit(struct drm_device *dev, | |
1675 | struct drm_atomic_state *state, | |
286dbb8d | 1676 | bool nonblock) |
623369e5 DV |
1677 | { |
1678 | int ret; | |
1679 | ||
fef9df8b GP |
1680 | if (state->async_update) { |
1681 | ret = drm_atomic_helper_prepare_planes(dev, state); | |
1682 | if (ret) | |
1683 | return ret; | |
1684 | ||
1685 | drm_atomic_helper_async_commit(dev, state); | |
1686 | drm_atomic_helper_cleanup_planes(dev, state); | |
1687 | ||
1688 | return 0; | |
1689 | } | |
1690 | ||
a095caa7 DV |
1691 | ret = drm_atomic_helper_setup_commit(state, nonblock); |
1692 | if (ret) | |
1693 | return ret; | |
1694 | ||
9f2a7950 DV |
1695 | INIT_WORK(&state->commit_work, commit_work); |
1696 | ||
623369e5 DV |
1697 | ret = drm_atomic_helper_prepare_planes(dev, state); |
1698 | if (ret) | |
1699 | return ret; | |
1700 | ||
f6ce410a GP |
1701 | if (!nonblock) { |
1702 | ret = drm_atomic_helper_wait_for_fences(dev, state, true); | |
c066d231 ML |
1703 | if (ret) |
1704 | goto err; | |
f6ce410a GP |
1705 | } |
1706 | ||
623369e5 DV |
1707 | /* |
1708 | * This is the point of no return - everything below never fails except | |
1709 | * when the hw goes bonghits. Which means we can commit the new state on | |
1710 | * the software side now. | |
1711 | */ | |
1712 | ||
c066d231 ML |
1713 | ret = drm_atomic_helper_swap_state(state, true); |
1714 | if (ret) | |
1715 | goto err; | |
623369e5 DV |
1716 | |
1717 | /* | |
1718 | * Everything below can be run asynchronously without the need to grab | |
f98bd3ef | 1719 | * any modeset locks at all under one condition: It must be guaranteed |
623369e5 DV |
1720 | * that the asynchronous work has either been cancelled (if the driver |
1721 | * supports it, which at least requires that the framebuffers get | |
1722 | * cleaned up with drm_atomic_helper_cleanup_planes()) or completed | |
1723 | * before the new state gets committed on the software side with | |
1724 | * drm_atomic_helper_swap_state(). | |
1725 | * | |
1726 | * This scheme allows new atomic state updates to be prepared and | |
1727 | * checked in parallel to the asynchronous completion of the previous | |
1728 | * update. Which is important since compositors need to figure out the | |
1729 | * composition of the next frame right after having submitted the | |
1730 | * current layout. | |
9f2a7950 DV |
1731 | * |
1732 | * NOTE: Commit work has multiple phases, first hardware commit, then | |
1733 | * cleanup. We want them to overlap, hence need system_unbound_wq to | |
1734 | * make sure work items don't artifically stall on each another. | |
623369e5 DV |
1735 | */ |
1736 | ||
0853695c | 1737 | drm_atomic_state_get(state); |
9f2a7950 DV |
1738 | if (nonblock) |
1739 | queue_work(system_unbound_wq, &state->commit_work); | |
1740 | else | |
1741 | commit_tail(state); | |
623369e5 DV |
1742 | |
1743 | return 0; | |
c066d231 ML |
1744 | |
1745 | err: | |
1746 | drm_atomic_helper_cleanup_planes(dev, state); | |
1747 | return ret; | |
623369e5 DV |
1748 | } |
1749 | EXPORT_SYMBOL(drm_atomic_helper_commit); | |
1750 | ||
e8c833a7 | 1751 | /** |
286dbb8d | 1752 | * DOC: implementing nonblocking commit |
e8c833a7 | 1753 | * |
9f2a7950 | 1754 | * Nonblocking atomic commits have to be implemented in the following sequence: |
e8c833a7 DV |
1755 | * |
1756 | * 1. Run drm_atomic_helper_prepare_planes() first. This is the only function | |
1757 | * which commit needs to call which can fail, so we want to run it first and | |
1758 | * synchronously. | |
1759 | * | |
286dbb8d | 1760 | * 2. Synchronize with any outstanding nonblocking commit worker threads which |
e8c833a7 DV |
1761 | * might be affected the new state update. This can be done by either cancelling |
1762 | * or flushing the work items, depending upon whether the driver can deal with | |
1763 | * cancelled updates. Note that it is important to ensure that the framebuffer | |
1764 | * cleanup is still done when cancelling. | |
1765 | * | |
9f2a7950 DV |
1766 | * Asynchronous workers need to have sufficient parallelism to be able to run |
1767 | * different atomic commits on different CRTCs in parallel. The simplest way to | |
1768 | * achive this is by running them on the &system_unbound_wq work queue. Note | |
1769 | * that drivers are not required to split up atomic commits and run an | |
1770 | * individual commit in parallel - userspace is supposed to do that if it cares. | |
1771 | * But it might be beneficial to do that for modesets, since those necessarily | |
1772 | * must be done as one global operation, and enabling or disabling a CRTC can | |
1773 | * take a long time. But even that is not required. | |
e8c833a7 DV |
1774 | * |
1775 | * 3. The software state is updated synchronously with | |
26196f7e | 1776 | * drm_atomic_helper_swap_state(). Doing this under the protection of all modeset |
e8c833a7 | 1777 | * locks means concurrent callers never see inconsistent state. And doing this |
286dbb8d ML |
1778 | * while it's guaranteed that no relevant nonblocking worker runs means that |
1779 | * nonblocking workers do not need grab any locks. Actually they must not grab | |
1780 | * locks, for otherwise the work flushing will deadlock. | |
e8c833a7 DV |
1781 | * |
1782 | * 4. Schedule a work item to do all subsequent steps, using the split-out | |
1783 | * commit helpers: a) pre-plane commit b) plane commit c) post-plane commit and | |
1784 | * then cleaning up the framebuffers after the old framebuffer is no longer | |
1785 | * being displayed. | |
9f2a7950 DV |
1786 | * |
1787 | * The above scheme is implemented in the atomic helper libraries in | |
1788 | * drm_atomic_helper_commit() using a bunch of helper functions. See | |
1789 | * drm_atomic_helper_setup_commit() for a starting point. | |
e8c833a7 DV |
1790 | */ |
1791 | ||
a095caa7 DV |
1792 | static int stall_checks(struct drm_crtc *crtc, bool nonblock) |
1793 | { | |
1794 | struct drm_crtc_commit *commit, *stall_commit = NULL; | |
1795 | bool completed = true; | |
1796 | int i; | |
1797 | long ret = 0; | |
1798 | ||
1799 | spin_lock(&crtc->commit_lock); | |
1800 | i = 0; | |
1801 | list_for_each_entry(commit, &crtc->commit_list, commit_entry) { | |
1802 | if (i == 0) { | |
1803 | completed = try_wait_for_completion(&commit->flip_done); | |
1804 | /* Userspace is not allowed to get ahead of the previous | |
1805 | * commit with nonblocking ones. */ | |
1806 | if (!completed && nonblock) { | |
1807 | spin_unlock(&crtc->commit_lock); | |
1808 | return -EBUSY; | |
1809 | } | |
1810 | } else if (i == 1) { | |
f46640b9 | 1811 | stall_commit = drm_crtc_commit_get(commit); |
a095caa7 | 1812 | break; |
723c3e55 | 1813 | } |
a095caa7 DV |
1814 | |
1815 | i++; | |
1816 | } | |
1817 | spin_unlock(&crtc->commit_lock); | |
1818 | ||
1819 | if (!stall_commit) | |
1820 | return 0; | |
1821 | ||
1822 | /* We don't want to let commits get ahead of cleanup work too much, | |
1823 | * stalling on 2nd previous commit means triple-buffer won't ever stall. | |
1824 | */ | |
723c3e55 | 1825 | ret = wait_for_completion_interruptible_timeout(&stall_commit->cleanup_done, |
a095caa7 DV |
1826 | 10*HZ); |
1827 | if (ret == 0) | |
1828 | DRM_ERROR("[CRTC:%d:%s] cleanup_done timed out\n", | |
1829 | crtc->base.id, crtc->name); | |
1830 | ||
1831 | drm_crtc_commit_put(stall_commit); | |
1832 | ||
1833 | return ret < 0 ? ret : 0; | |
1834 | } | |
1835 | ||
899cc5f1 | 1836 | static void release_crtc_commit(struct completion *completion) |
24835e44 DV |
1837 | { |
1838 | struct drm_crtc_commit *commit = container_of(completion, | |
1839 | typeof(*commit), | |
1840 | flip_done); | |
1841 | ||
1842 | drm_crtc_commit_put(commit); | |
1843 | } | |
1844 | ||
21a01abb ML |
1845 | static void init_commit(struct drm_crtc_commit *commit, struct drm_crtc *crtc) |
1846 | { | |
1847 | init_completion(&commit->flip_done); | |
1848 | init_completion(&commit->hw_done); | |
1849 | init_completion(&commit->cleanup_done); | |
1850 | INIT_LIST_HEAD(&commit->commit_entry); | |
1851 | kref_init(&commit->ref); | |
1852 | commit->crtc = crtc; | |
1853 | } | |
1854 | ||
1855 | static struct drm_crtc_commit * | |
1856 | crtc_or_fake_commit(struct drm_atomic_state *state, struct drm_crtc *crtc) | |
1857 | { | |
1858 | if (crtc) { | |
1859 | struct drm_crtc_state *new_crtc_state; | |
1860 | ||
1861 | new_crtc_state = drm_atomic_get_new_crtc_state(state, crtc); | |
1862 | ||
1863 | return new_crtc_state->commit; | |
1864 | } | |
1865 | ||
1866 | if (!state->fake_commit) { | |
1867 | state->fake_commit = kzalloc(sizeof(*state->fake_commit), GFP_KERNEL); | |
1868 | if (!state->fake_commit) | |
1869 | return NULL; | |
1870 | ||
1871 | init_commit(state->fake_commit, NULL); | |
1872 | } | |
1873 | ||
1874 | return state->fake_commit; | |
1875 | } | |
1876 | ||
a095caa7 DV |
1877 | /** |
1878 | * drm_atomic_helper_setup_commit - setup possibly nonblocking commit | |
1879 | * @state: new modeset state to be committed | |
1880 | * @nonblock: whether nonblocking behavior is requested. | |
1881 | * | |
1882 | * This function prepares @state to be used by the atomic helper's support for | |
1883 | * nonblocking commits. Drivers using the nonblocking commit infrastructure | |
6806cdf9 DV |
1884 | * should always call this function from their |
1885 | * &drm_mode_config_funcs.atomic_commit hook. | |
a095caa7 DV |
1886 | * |
1887 | * To be able to use this support drivers need to use a few more helper | |
1888 | * functions. drm_atomic_helper_wait_for_dependencies() must be called before | |
1889 | * actually committing the hardware state, and for nonblocking commits this call | |
1890 | * must be placed in the async worker. See also drm_atomic_helper_swap_state() | |
1891 | * and it's stall parameter, for when a driver's commit hooks look at the | |
6806cdf9 | 1892 | * &drm_crtc.state, &drm_plane.state or &drm_connector.state pointer directly. |
a095caa7 DV |
1893 | * |
1894 | * Completion of the hardware commit step must be signalled using | |
1895 | * drm_atomic_helper_commit_hw_done(). After this step the driver is not allowed | |
1896 | * to read or change any permanent software or hardware modeset state. The only | |
1897 | * exception is state protected by other means than &drm_modeset_lock locks. | |
1898 | * Only the free standing @state with pointers to the old state structures can | |
1899 | * be inspected, e.g. to clean up old buffers using | |
1900 | * drm_atomic_helper_cleanup_planes(). | |
1901 | * | |
1902 | * At the very end, before cleaning up @state drivers must call | |
1903 | * drm_atomic_helper_commit_cleanup_done(). | |
1904 | * | |
1905 | * This is all implemented by in drm_atomic_helper_commit(), giving drivers a | |
9ac07815 | 1906 | * complete and easy-to-use default implementation of the atomic_commit() hook. |
a095caa7 DV |
1907 | * |
1908 | * The tracking of asynchronously executed and still pending commits is done | |
1909 | * using the core structure &drm_crtc_commit. | |
1910 | * | |
1911 | * By default there's no need to clean up resources allocated by this function | |
1912 | * explicitly: drm_atomic_state_default_clear() will take care of that | |
1913 | * automatically. | |
1914 | * | |
1915 | * Returns: | |
1916 | * | |
1917 | * 0 on success. -EBUSY when userspace schedules nonblocking commits too fast, | |
1918 | * -ENOMEM on allocation failures and -EINTR when a signal is pending. | |
1919 | */ | |
1920 | int drm_atomic_helper_setup_commit(struct drm_atomic_state *state, | |
1921 | bool nonblock) | |
1922 | { | |
1923 | struct drm_crtc *crtc; | |
415c3ac3 | 1924 | struct drm_crtc_state *old_crtc_state, *new_crtc_state; |
21a01abb ML |
1925 | struct drm_connector *conn; |
1926 | struct drm_connector_state *old_conn_state, *new_conn_state; | |
1927 | struct drm_plane *plane; | |
1928 | struct drm_plane_state *old_plane_state, *new_plane_state; | |
a095caa7 DV |
1929 | struct drm_crtc_commit *commit; |
1930 | int i, ret; | |
1931 | ||
415c3ac3 | 1932 | for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) { |
a095caa7 DV |
1933 | commit = kzalloc(sizeof(*commit), GFP_KERNEL); |
1934 | if (!commit) | |
1935 | return -ENOMEM; | |
1936 | ||
21a01abb | 1937 | init_commit(commit, crtc); |
a095caa7 | 1938 | |
163bcc2c | 1939 | new_crtc_state->commit = commit; |
a095caa7 DV |
1940 | |
1941 | ret = stall_checks(crtc, nonblock); | |
1942 | if (ret) | |
1943 | return ret; | |
1944 | ||
1945 | /* Drivers only send out events when at least either current or | |
1946 | * new CRTC state is active. Complete right away if everything | |
1947 | * stays off. */ | |
415c3ac3 | 1948 | if (!old_crtc_state->active && !new_crtc_state->active) { |
a095caa7 DV |
1949 | complete_all(&commit->flip_done); |
1950 | continue; | |
1951 | } | |
1952 | ||
1953 | /* Legacy cursor updates are fully unsynced. */ | |
1954 | if (state->legacy_cursor_update) { | |
1955 | complete_all(&commit->flip_done); | |
1956 | continue; | |
1957 | } | |
1958 | ||
415c3ac3 | 1959 | if (!new_crtc_state->event) { |
a095caa7 DV |
1960 | commit->event = kzalloc(sizeof(*commit->event), |
1961 | GFP_KERNEL); | |
1962 | if (!commit->event) | |
1963 | return -ENOMEM; | |
1964 | ||
415c3ac3 | 1965 | new_crtc_state->event = commit->event; |
a095caa7 DV |
1966 | } |
1967 | ||
415c3ac3 ML |
1968 | new_crtc_state->event->base.completion = &commit->flip_done; |
1969 | new_crtc_state->event->base.completion_release = release_crtc_commit; | |
24835e44 | 1970 | drm_crtc_commit_get(commit); |
1c6ceeee LSL |
1971 | |
1972 | commit->abort_completion = true; | |
4364bcb2 LL |
1973 | |
1974 | state->crtcs[i].commit = commit; | |
1975 | drm_crtc_commit_get(commit); | |
a095caa7 DV |
1976 | } |
1977 | ||
21a01abb | 1978 | for_each_oldnew_connector_in_state(state, conn, old_conn_state, new_conn_state, i) { |
21a01abb ML |
1979 | /* Userspace is not allowed to get ahead of the previous |
1980 | * commit with nonblocking ones. */ | |
1981 | if (nonblock && old_conn_state->commit && | |
1982 | !try_wait_for_completion(&old_conn_state->commit->flip_done)) | |
1983 | return -EBUSY; | |
a095caa7 | 1984 | |
1f2d9bdc DV |
1985 | /* Always track connectors explicitly for e.g. link retraining. */ |
1986 | commit = crtc_or_fake_commit(state, new_conn_state->crtc ?: old_conn_state->crtc); | |
21a01abb ML |
1987 | if (!commit) |
1988 | return -ENOMEM; | |
a095caa7 | 1989 | |
21a01abb ML |
1990 | new_conn_state->commit = drm_crtc_commit_get(commit); |
1991 | } | |
1992 | ||
1993 | for_each_oldnew_plane_in_state(state, plane, old_plane_state, new_plane_state, i) { | |
21a01abb ML |
1994 | /* Userspace is not allowed to get ahead of the previous |
1995 | * commit with nonblocking ones. */ | |
1996 | if (nonblock && old_plane_state->commit && | |
1997 | !try_wait_for_completion(&old_plane_state->commit->flip_done)) | |
1998 | return -EBUSY; | |
1999 | ||
1f2d9bdc | 2000 | /* Always track planes explicitly for async pageflip support. */ |
4edd6084 | 2001 | commit = crtc_or_fake_commit(state, new_plane_state->crtc ?: old_plane_state->crtc); |
21a01abb ML |
2002 | if (!commit) |
2003 | return -ENOMEM; | |
2004 | ||
2005 | new_plane_state->commit = drm_crtc_commit_get(commit); | |
a095caa7 DV |
2006 | } |
2007 | ||
a095caa7 | 2008 | return 0; |
a095caa7 | 2009 | } |
a095caa7 | 2010 | EXPORT_SYMBOL(drm_atomic_helper_setup_commit); |
a095caa7 DV |
2011 | |
2012 | /** | |
2013 | * drm_atomic_helper_wait_for_dependencies - wait for required preceeding commits | |
1ea0c02e | 2014 | * @old_state: atomic state object with old state structures |
a095caa7 DV |
2015 | * |
2016 | * This function waits for all preceeding commits that touch the same CRTC as | |
1ea0c02e | 2017 | * @old_state to both be committed to the hardware (as signalled by |
a095caa7 | 2018 | * drm_atomic_helper_commit_hw_done) and executed by the hardware (as signalled |
277b09cf | 2019 | * by calling drm_crtc_send_vblank_event() on the &drm_crtc_state.event). |
a095caa7 DV |
2020 | * |
2021 | * This is part of the atomic helper support for nonblocking commits, see | |
2022 | * drm_atomic_helper_setup_commit() for an overview. | |
2023 | */ | |
1ea0c02e | 2024 | void drm_atomic_helper_wait_for_dependencies(struct drm_atomic_state *old_state) |
a095caa7 DV |
2025 | { |
2026 | struct drm_crtc *crtc; | |
163bcc2c | 2027 | struct drm_crtc_state *old_crtc_state; |
21a01abb ML |
2028 | struct drm_plane *plane; |
2029 | struct drm_plane_state *old_plane_state; | |
2030 | struct drm_connector *conn; | |
2031 | struct drm_connector_state *old_conn_state; | |
a095caa7 DV |
2032 | struct drm_crtc_commit *commit; |
2033 | int i; | |
2034 | long ret; | |
2035 | ||
163bcc2c ML |
2036 | for_each_old_crtc_in_state(old_state, crtc, old_crtc_state, i) { |
2037 | commit = old_crtc_state->commit; | |
a095caa7 DV |
2038 | |
2039 | if (!commit) | |
2040 | continue; | |
2041 | ||
2042 | ret = wait_for_completion_timeout(&commit->hw_done, | |
2043 | 10*HZ); | |
2044 | if (ret == 0) | |
2045 | DRM_ERROR("[CRTC:%d:%s] hw_done timed out\n", | |
2046 | crtc->base.id, crtc->name); | |
2047 | ||
2048 | /* Currently no support for overwriting flips, hence | |
2049 | * stall for previous one to execute completely. */ | |
2050 | ret = wait_for_completion_timeout(&commit->flip_done, | |
2051 | 10*HZ); | |
2052 | if (ret == 0) | |
2053 | DRM_ERROR("[CRTC:%d:%s] flip_done timed out\n", | |
2054 | crtc->base.id, crtc->name); | |
a095caa7 | 2055 | } |
21a01abb ML |
2056 | |
2057 | for_each_old_connector_in_state(old_state, conn, old_conn_state, i) { | |
2058 | commit = old_conn_state->commit; | |
a095caa7 | 2059 | |
21a01abb ML |
2060 | if (!commit) |
2061 | continue; | |
2062 | ||
2063 | ret = wait_for_completion_timeout(&commit->hw_done, | |
2064 | 10*HZ); | |
2065 | if (ret == 0) | |
2066 | DRM_ERROR("[CONNECTOR:%d:%s] hw_done timed out\n", | |
2067 | conn->base.id, conn->name); | |
2068 | ||
2069 | /* Currently no support for overwriting flips, hence | |
2070 | * stall for previous one to execute completely. */ | |
2071 | ret = wait_for_completion_timeout(&commit->flip_done, | |
2072 | 10*HZ); | |
2073 | if (ret == 0) | |
2074 | DRM_ERROR("[CONNECTOR:%d:%s] flip_done timed out\n", | |
2075 | conn->base.id, conn->name); | |
2076 | } | |
2077 | ||
2078 | for_each_old_plane_in_state(old_state, plane, old_plane_state, i) { | |
2079 | commit = old_plane_state->commit; | |
2080 | ||
2081 | if (!commit) | |
2082 | continue; | |
2083 | ||
2084 | ret = wait_for_completion_timeout(&commit->hw_done, | |
2085 | 10*HZ); | |
2086 | if (ret == 0) | |
2087 | DRM_ERROR("[PLANE:%d:%s] hw_done timed out\n", | |
2088 | plane->base.id, plane->name); | |
2089 | ||
2090 | /* Currently no support for overwriting flips, hence | |
2091 | * stall for previous one to execute completely. */ | |
2092 | ret = wait_for_completion_timeout(&commit->flip_done, | |
2093 | 10*HZ); | |
2094 | if (ret == 0) | |
2095 | DRM_ERROR("[PLANE:%d:%s] flip_done timed out\n", | |
2096 | plane->base.id, plane->name); | |
a095caa7 DV |
2097 | } |
2098 | } | |
2099 | EXPORT_SYMBOL(drm_atomic_helper_wait_for_dependencies); | |
2100 | ||
b25c60af BB |
2101 | /** |
2102 | * drm_atomic_helper_fake_vblank - fake VBLANK events if needed | |
2103 | * @old_state: atomic state object with old state structures | |
2104 | * | |
2105 | * This function walks all CRTCs and fake VBLANK events on those with | |
2106 | * &drm_crtc_state.no_vblank set to true and &drm_crtc_state.event != NULL. | |
2107 | * The primary use of this function is writeback connectors working in oneshot | |
2108 | * mode and faking VBLANK events. In this case they only fake the VBLANK event | |
2109 | * when a job is queued, and any change to the pipeline that does not touch the | |
2110 | * connector is leading to timeouts when calling | |
2111 | * drm_atomic_helper_wait_for_vblanks() or | |
2112 | * drm_atomic_helper_wait_for_flip_done(). | |
2113 | * | |
2114 | * This is part of the atomic helper support for nonblocking commits, see | |
2115 | * drm_atomic_helper_setup_commit() for an overview. | |
2116 | */ | |
2117 | void drm_atomic_helper_fake_vblank(struct drm_atomic_state *old_state) | |
2118 | { | |
2119 | struct drm_crtc_state *new_crtc_state; | |
2120 | struct drm_crtc *crtc; | |
2121 | int i; | |
2122 | ||
2123 | for_each_new_crtc_in_state(old_state, crtc, new_crtc_state, i) { | |
2124 | unsigned long flags; | |
2125 | ||
2126 | if (!new_crtc_state->no_vblank) | |
2127 | continue; | |
2128 | ||
2129 | spin_lock_irqsave(&old_state->dev->event_lock, flags); | |
2130 | if (new_crtc_state->event) { | |
2131 | drm_crtc_send_vblank_event(crtc, | |
2132 | new_crtc_state->event); | |
2133 | new_crtc_state->event = NULL; | |
2134 | } | |
2135 | spin_unlock_irqrestore(&old_state->dev->event_lock, flags); | |
2136 | } | |
2137 | } | |
2138 | EXPORT_SYMBOL(drm_atomic_helper_fake_vblank); | |
2139 | ||
a095caa7 DV |
2140 | /** |
2141 | * drm_atomic_helper_commit_hw_done - setup possible nonblocking commit | |
1ea0c02e | 2142 | * @old_state: atomic state object with old state structures |
a095caa7 DV |
2143 | * |
2144 | * This function is used to signal completion of the hardware commit step. After | |
2145 | * this step the driver is not allowed to read or change any permanent software | |
2146 | * or hardware modeset state. The only exception is state protected by other | |
2147 | * means than &drm_modeset_lock locks. | |
2148 | * | |
2149 | * Drivers should try to postpone any expensive or delayed cleanup work after | |
2150 | * this function is called. | |
2151 | * | |
2152 | * This is part of the atomic helper support for nonblocking commits, see | |
2153 | * drm_atomic_helper_setup_commit() for an overview. | |
2154 | */ | |
1ea0c02e | 2155 | void drm_atomic_helper_commit_hw_done(struct drm_atomic_state *old_state) |
a095caa7 DV |
2156 | { |
2157 | struct drm_crtc *crtc; | |
163bcc2c | 2158 | struct drm_crtc_state *old_crtc_state, *new_crtc_state; |
a095caa7 DV |
2159 | struct drm_crtc_commit *commit; |
2160 | int i; | |
2161 | ||
163bcc2c ML |
2162 | for_each_oldnew_crtc_in_state(old_state, crtc, old_crtc_state, new_crtc_state, i) { |
2163 | commit = new_crtc_state->commit; | |
a095caa7 DV |
2164 | if (!commit) |
2165 | continue; | |
2166 | ||
163bcc2c ML |
2167 | /* |
2168 | * copy new_crtc_state->commit to old_crtc_state->commit, | |
2169 | * it's unsafe to touch new_crtc_state after hw_done, | |
2170 | * but we still need to do so in cleanup_done(). | |
2171 | */ | |
2172 | if (old_crtc_state->commit) | |
2173 | drm_crtc_commit_put(old_crtc_state->commit); | |
2174 | ||
2175 | old_crtc_state->commit = drm_crtc_commit_get(commit); | |
2176 | ||
a095caa7 | 2177 | /* backend must have consumed any event by now */ |
415c3ac3 | 2178 | WARN_ON(new_crtc_state->event); |
a095caa7 | 2179 | complete_all(&commit->hw_done); |
a095caa7 | 2180 | } |
21a01abb ML |
2181 | |
2182 | if (old_state->fake_commit) { | |
2183 | complete_all(&old_state->fake_commit->hw_done); | |
2184 | complete_all(&old_state->fake_commit->flip_done); | |
2185 | } | |
a095caa7 DV |
2186 | } |
2187 | EXPORT_SYMBOL(drm_atomic_helper_commit_hw_done); | |
2188 | ||
2189 | /** | |
2190 | * drm_atomic_helper_commit_cleanup_done - signal completion of commit | |
1ea0c02e | 2191 | * @old_state: atomic state object with old state structures |
a095caa7 | 2192 | * |
1ea0c02e DV |
2193 | * This signals completion of the atomic update @old_state, including any |
2194 | * cleanup work. If used, it must be called right before calling | |
0853695c | 2195 | * drm_atomic_state_put(). |
a095caa7 DV |
2196 | * |
2197 | * This is part of the atomic helper support for nonblocking commits, see | |
2198 | * drm_atomic_helper_setup_commit() for an overview. | |
2199 | */ | |
1ea0c02e | 2200 | void drm_atomic_helper_commit_cleanup_done(struct drm_atomic_state *old_state) |
a095caa7 DV |
2201 | { |
2202 | struct drm_crtc *crtc; | |
163bcc2c | 2203 | struct drm_crtc_state *old_crtc_state; |
a095caa7 DV |
2204 | struct drm_crtc_commit *commit; |
2205 | int i; | |
a095caa7 | 2206 | |
163bcc2c ML |
2207 | for_each_old_crtc_in_state(old_state, crtc, old_crtc_state, i) { |
2208 | commit = old_crtc_state->commit; | |
a095caa7 DV |
2209 | if (WARN_ON(!commit)) |
2210 | continue; | |
2211 | ||
a095caa7 DV |
2212 | complete_all(&commit->cleanup_done); |
2213 | WARN_ON(!try_wait_for_completion(&commit->hw_done)); | |
2214 | ||
7141fd3e | 2215 | spin_lock(&crtc->commit_lock); |
a095caa7 DV |
2216 | list_del(&commit->commit_entry); |
2217 | spin_unlock(&crtc->commit_lock); | |
2218 | } | |
21a01abb ML |
2219 | |
2220 | if (old_state->fake_commit) | |
2221 | complete_all(&old_state->fake_commit->cleanup_done); | |
a095caa7 DV |
2222 | } |
2223 | EXPORT_SYMBOL(drm_atomic_helper_commit_cleanup_done); | |
2224 | ||
c2fcd274 | 2225 | /** |
2e3afd47 | 2226 | * drm_atomic_helper_prepare_planes - prepare plane resources before commit |
c2fcd274 | 2227 | * @dev: DRM device |
2e3afd47 | 2228 | * @state: atomic state object with new state structures |
c2fcd274 DV |
2229 | * |
2230 | * This function prepares plane state, specifically framebuffers, for the new | |
6806cdf9 DV |
2231 | * configuration, by calling &drm_plane_helper_funcs.prepare_fb. If any failure |
2232 | * is encountered this function will call &drm_plane_helper_funcs.cleanup_fb on | |
2233 | * any already successfully prepared framebuffer. | |
c2fcd274 DV |
2234 | * |
2235 | * Returns: | |
2236 | * 0 on success, negative error code on failure. | |
2237 | */ | |
2238 | int drm_atomic_helper_prepare_planes(struct drm_device *dev, | |
2239 | struct drm_atomic_state *state) | |
2240 | { | |
be9174a4 | 2241 | struct drm_plane *plane; |
415c3ac3 | 2242 | struct drm_plane_state *new_plane_state; |
be9174a4 | 2243 | int ret, i, j; |
c2fcd274 | 2244 | |
415c3ac3 | 2245 | for_each_new_plane_in_state(state, plane, new_plane_state, i) { |
b5ceff20 | 2246 | const struct drm_plane_helper_funcs *funcs; |
c2fcd274 DV |
2247 | |
2248 | funcs = plane->helper_private; | |
2249 | ||
844f9111 | 2250 | if (funcs->prepare_fb) { |
415c3ac3 | 2251 | ret = funcs->prepare_fb(plane, new_plane_state); |
c2fcd274 DV |
2252 | if (ret) |
2253 | goto fail; | |
2254 | } | |
2255 | } | |
2256 | ||
2257 | return 0; | |
2258 | ||
2259 | fail: | |
415c3ac3 | 2260 | for_each_new_plane_in_state(state, plane, new_plane_state, j) { |
b5ceff20 | 2261 | const struct drm_plane_helper_funcs *funcs; |
c2fcd274 | 2262 | |
be9174a4 | 2263 | if (j >= i) |
c2fcd274 DV |
2264 | continue; |
2265 | ||
2266 | funcs = plane->helper_private; | |
2267 | ||
844f9111 | 2268 | if (funcs->cleanup_fb) |
415c3ac3 | 2269 | funcs->cleanup_fb(plane, new_plane_state); |
c2fcd274 DV |
2270 | } |
2271 | ||
2272 | return ret; | |
2273 | } | |
2274 | EXPORT_SYMBOL(drm_atomic_helper_prepare_planes); | |
2275 | ||
7135ac54 | 2276 | static bool plane_crtc_active(const struct drm_plane_state *state) |
aef9dbb8 DV |
2277 | { |
2278 | return state->crtc && state->crtc->state->active; | |
2279 | } | |
2280 | ||
c2fcd274 DV |
2281 | /** |
2282 | * drm_atomic_helper_commit_planes - commit plane state | |
2283 | * @dev: DRM device | |
b0fcfc89 | 2284 | * @old_state: atomic state object with old state structures |
2b58e98d | 2285 | * @flags: flags for committing plane state |
c2fcd274 DV |
2286 | * |
2287 | * This function commits the new plane state using the plane and atomic helper | |
2288 | * functions for planes and crtcs. It assumes that the atomic state has already | |
2289 | * been pushed into the relevant object state pointers, since this step can no | |
2290 | * longer fail. | |
2291 | * | |
b0fcfc89 | 2292 | * It still requires the global state object @old_state to know which planes and |
c2fcd274 | 2293 | * crtcs need to be updated though. |
de28d021 ML |
2294 | * |
2295 | * Note that this function does all plane updates across all CRTCs in one step. | |
2296 | * If the hardware can't support this approach look at | |
2297 | * drm_atomic_helper_commit_planes_on_crtc() instead. | |
6e48ae32 DV |
2298 | * |
2299 | * Plane parameters can be updated by applications while the associated CRTC is | |
2300 | * disabled. The DRM/KMS core will store the parameters in the plane state, | |
2301 | * which will be available to the driver when the CRTC is turned on. As a result | |
2302 | * most drivers don't need to be immediately notified of plane updates for a | |
2303 | * disabled CRTC. | |
2304 | * | |
2b58e98d LY |
2305 | * Unless otherwise needed, drivers are advised to set the ACTIVE_ONLY flag in |
2306 | * @flags in order not to receive plane update notifications related to a | |
2307 | * disabled CRTC. This avoids the need to manually ignore plane updates in | |
6e48ae32 DV |
2308 | * driver code when the driver and/or hardware can't or just don't need to deal |
2309 | * with updates on disabled CRTCs, for example when supporting runtime PM. | |
2310 | * | |
2b58e98d LY |
2311 | * Drivers may set the NO_DISABLE_AFTER_MODESET flag in @flags if the relevant |
2312 | * display controllers require to disable a CRTC's planes when the CRTC is | |
6806cdf9 DV |
2313 | * disabled. This function would skip the &drm_plane_helper_funcs.atomic_disable |
2314 | * call for a plane if the CRTC of the old plane state needs a modesetting | |
2315 | * operation. Of course, the drivers need to disable the planes in their CRTC | |
2316 | * disable callbacks since no one else would do that. | |
2b58e98d LY |
2317 | * |
2318 | * The drm_atomic_helper_commit() default implementation doesn't set the | |
2319 | * ACTIVE_ONLY flag to most closely match the behaviour of the legacy helpers. | |
2320 | * This should not be copied blindly by drivers. | |
c2fcd274 DV |
2321 | */ |
2322 | void drm_atomic_helper_commit_planes(struct drm_device *dev, | |
aef9dbb8 | 2323 | struct drm_atomic_state *old_state, |
2b58e98d | 2324 | uint32_t flags) |
c2fcd274 | 2325 | { |
df63b999 | 2326 | struct drm_crtc *crtc; |
415c3ac3 | 2327 | struct drm_crtc_state *old_crtc_state, *new_crtc_state; |
df63b999 | 2328 | struct drm_plane *plane; |
415c3ac3 | 2329 | struct drm_plane_state *old_plane_state, *new_plane_state; |
c2fcd274 | 2330 | int i; |
2b58e98d LY |
2331 | bool active_only = flags & DRM_PLANE_COMMIT_ACTIVE_ONLY; |
2332 | bool no_disable = flags & DRM_PLANE_COMMIT_NO_DISABLE_AFTER_MODESET; | |
c2fcd274 | 2333 | |
415c3ac3 | 2334 | for_each_oldnew_crtc_in_state(old_state, crtc, old_crtc_state, new_crtc_state, i) { |
b5ceff20 | 2335 | const struct drm_crtc_helper_funcs *funcs; |
c2fcd274 DV |
2336 | |
2337 | funcs = crtc->helper_private; | |
2338 | ||
2339 | if (!funcs || !funcs->atomic_begin) | |
2340 | continue; | |
2341 | ||
415c3ac3 | 2342 | if (active_only && !new_crtc_state->active) |
aef9dbb8 DV |
2343 | continue; |
2344 | ||
613d2b27 | 2345 | funcs->atomic_begin(crtc, old_crtc_state); |
c2fcd274 DV |
2346 | } |
2347 | ||
415c3ac3 | 2348 | for_each_oldnew_plane_in_state(old_state, plane, old_plane_state, new_plane_state, i) { |
b5ceff20 | 2349 | const struct drm_plane_helper_funcs *funcs; |
216c59d6 | 2350 | bool disabling; |
c2fcd274 DV |
2351 | |
2352 | funcs = plane->helper_private; | |
2353 | ||
3cad4b68 | 2354 | if (!funcs) |
c2fcd274 DV |
2355 | continue; |
2356 | ||
51ffa12d ML |
2357 | disabling = drm_atomic_plane_disabling(old_plane_state, |
2358 | new_plane_state); | |
216c59d6 LP |
2359 | |
2360 | if (active_only) { | |
2361 | /* | |
2362 | * Skip planes related to inactive CRTCs. If the plane | |
2363 | * is enabled use the state of the current CRTC. If the | |
2364 | * plane is being disabled use the state of the old | |
2365 | * CRTC to avoid skipping planes being disabled on an | |
2366 | * active CRTC. | |
2367 | */ | |
415c3ac3 | 2368 | if (!disabling && !plane_crtc_active(new_plane_state)) |
216c59d6 LP |
2369 | continue; |
2370 | if (disabling && !plane_crtc_active(old_plane_state)) | |
2371 | continue; | |
2372 | } | |
aef9dbb8 | 2373 | |
407b8bd9 TR |
2374 | /* |
2375 | * Special-case disabling the plane if drivers support it. | |
2376 | */ | |
2b58e98d LY |
2377 | if (disabling && funcs->atomic_disable) { |
2378 | struct drm_crtc_state *crtc_state; | |
2379 | ||
2380 | crtc_state = old_plane_state->crtc->state; | |
2381 | ||
2382 | if (drm_atomic_crtc_needs_modeset(crtc_state) && | |
2383 | no_disable) | |
2384 | continue; | |
2385 | ||
407b8bd9 | 2386 | funcs->atomic_disable(plane, old_plane_state); |
415c3ac3 | 2387 | } else if (new_plane_state->crtc || disabling) { |
407b8bd9 | 2388 | funcs->atomic_update(plane, old_plane_state); |
2b58e98d | 2389 | } |
c2fcd274 DV |
2390 | } |
2391 | ||
415c3ac3 | 2392 | for_each_oldnew_crtc_in_state(old_state, crtc, old_crtc_state, new_crtc_state, i) { |
b5ceff20 | 2393 | const struct drm_crtc_helper_funcs *funcs; |
c2fcd274 DV |
2394 | |
2395 | funcs = crtc->helper_private; | |
2396 | ||
2397 | if (!funcs || !funcs->atomic_flush) | |
2398 | continue; | |
2399 | ||
415c3ac3 | 2400 | if (active_only && !new_crtc_state->active) |
aef9dbb8 DV |
2401 | continue; |
2402 | ||
613d2b27 | 2403 | funcs->atomic_flush(crtc, old_crtc_state); |
c2fcd274 DV |
2404 | } |
2405 | } | |
2406 | EXPORT_SYMBOL(drm_atomic_helper_commit_planes); | |
2407 | ||
de28d021 ML |
2408 | /** |
2409 | * drm_atomic_helper_commit_planes_on_crtc - commit plane state for a crtc | |
2410 | * @old_crtc_state: atomic state object with the old crtc state | |
2411 | * | |
2412 | * This function commits the new plane state using the plane and atomic helper | |
2413 | * functions for planes on the specific crtc. It assumes that the atomic state | |
2414 | * has already been pushed into the relevant object state pointers, since this | |
2415 | * step can no longer fail. | |
2416 | * | |
2417 | * This function is useful when plane updates should be done crtc-by-crtc | |
2418 | * instead of one global step like drm_atomic_helper_commit_planes() does. | |
2419 | * | |
2420 | * This function can only be savely used when planes are not allowed to move | |
2421 | * between different CRTCs because this function doesn't handle inter-CRTC | |
2422 | * depencies. Callers need to ensure that either no such depencies exist, | |
2423 | * resolve them through ordering of commit calls or through some other means. | |
2424 | */ | |
2425 | void | |
2426 | drm_atomic_helper_commit_planes_on_crtc(struct drm_crtc_state *old_crtc_state) | |
2427 | { | |
2428 | const struct drm_crtc_helper_funcs *crtc_funcs; | |
2429 | struct drm_crtc *crtc = old_crtc_state->crtc; | |
2430 | struct drm_atomic_state *old_state = old_crtc_state->state; | |
e35a2f9a VS |
2431 | struct drm_crtc_state *new_crtc_state = |
2432 | drm_atomic_get_new_crtc_state(old_state, crtc); | |
de28d021 ML |
2433 | struct drm_plane *plane; |
2434 | unsigned plane_mask; | |
2435 | ||
2436 | plane_mask = old_crtc_state->plane_mask; | |
e35a2f9a | 2437 | plane_mask |= new_crtc_state->plane_mask; |
de28d021 ML |
2438 | |
2439 | crtc_funcs = crtc->helper_private; | |
2440 | if (crtc_funcs && crtc_funcs->atomic_begin) | |
613d2b27 | 2441 | crtc_funcs->atomic_begin(crtc, old_crtc_state); |
de28d021 ML |
2442 | |
2443 | drm_for_each_plane_mask(plane, crtc->dev, plane_mask) { | |
2444 | struct drm_plane_state *old_plane_state = | |
b4d93679 | 2445 | drm_atomic_get_old_plane_state(old_state, plane); |
e35a2f9a VS |
2446 | struct drm_plane_state *new_plane_state = |
2447 | drm_atomic_get_new_plane_state(old_state, plane); | |
de28d021 ML |
2448 | const struct drm_plane_helper_funcs *plane_funcs; |
2449 | ||
2450 | plane_funcs = plane->helper_private; | |
2451 | ||
2452 | if (!old_plane_state || !plane_funcs) | |
2453 | continue; | |
2454 | ||
e35a2f9a VS |
2455 | WARN_ON(new_plane_state->crtc && |
2456 | new_plane_state->crtc != crtc); | |
de28d021 | 2457 | |
e35a2f9a | 2458 | if (drm_atomic_plane_disabling(old_plane_state, new_plane_state) && |
de28d021 ML |
2459 | plane_funcs->atomic_disable) |
2460 | plane_funcs->atomic_disable(plane, old_plane_state); | |
e35a2f9a VS |
2461 | else if (new_plane_state->crtc || |
2462 | drm_atomic_plane_disabling(old_plane_state, new_plane_state)) | |
de28d021 ML |
2463 | plane_funcs->atomic_update(plane, old_plane_state); |
2464 | } | |
2465 | ||
2466 | if (crtc_funcs && crtc_funcs->atomic_flush) | |
613d2b27 | 2467 | crtc_funcs->atomic_flush(crtc, old_crtc_state); |
de28d021 ML |
2468 | } |
2469 | EXPORT_SYMBOL(drm_atomic_helper_commit_planes_on_crtc); | |
2470 | ||
6753ba97 JS |
2471 | /** |
2472 | * drm_atomic_helper_disable_planes_on_crtc - helper to disable CRTC's planes | |
28500291 | 2473 | * @old_crtc_state: atomic state object with the old CRTC state |
6753ba97 JS |
2474 | * @atomic: if set, synchronize with CRTC's atomic_begin/flush hooks |
2475 | * | |
2476 | * Disables all planes associated with the given CRTC. This can be | |
28500291 LY |
2477 | * used for instance in the CRTC helper atomic_disable callback to disable |
2478 | * all planes. | |
6753ba97 JS |
2479 | * |
2480 | * If the atomic-parameter is set the function calls the CRTC's | |
2481 | * atomic_begin hook before and atomic_flush hook after disabling the | |
2482 | * planes. | |
2483 | * | |
2484 | * It is a bug to call this function without having implemented the | |
6806cdf9 | 2485 | * &drm_plane_helper_funcs.atomic_disable plane hook. |
6753ba97 | 2486 | */ |
28500291 LY |
2487 | void |
2488 | drm_atomic_helper_disable_planes_on_crtc(struct drm_crtc_state *old_crtc_state, | |
2489 | bool atomic) | |
6753ba97 | 2490 | { |
28500291 | 2491 | struct drm_crtc *crtc = old_crtc_state->crtc; |
6753ba97 JS |
2492 | const struct drm_crtc_helper_funcs *crtc_funcs = |
2493 | crtc->helper_private; | |
2494 | struct drm_plane *plane; | |
2495 | ||
2496 | if (atomic && crtc_funcs && crtc_funcs->atomic_begin) | |
2497 | crtc_funcs->atomic_begin(crtc, NULL); | |
2498 | ||
28500291 | 2499 | drm_atomic_crtc_state_for_each_plane(plane, old_crtc_state) { |
6753ba97 JS |
2500 | const struct drm_plane_helper_funcs *plane_funcs = |
2501 | plane->helper_private; | |
2502 | ||
28500291 | 2503 | if (!plane_funcs) |
6753ba97 JS |
2504 | continue; |
2505 | ||
2506 | WARN_ON(!plane_funcs->atomic_disable); | |
2507 | if (plane_funcs->atomic_disable) | |
2508 | plane_funcs->atomic_disable(plane, NULL); | |
2509 | } | |
2510 | ||
2511 | if (atomic && crtc_funcs && crtc_funcs->atomic_flush) | |
2512 | crtc_funcs->atomic_flush(crtc, NULL); | |
2513 | } | |
2514 | EXPORT_SYMBOL(drm_atomic_helper_disable_planes_on_crtc); | |
2515 | ||
c2fcd274 DV |
2516 | /** |
2517 | * drm_atomic_helper_cleanup_planes - cleanup plane resources after commit | |
2518 | * @dev: DRM device | |
2519 | * @old_state: atomic state object with old state structures | |
2520 | * | |
2521 | * This function cleans up plane state, specifically framebuffers, from the old | |
2522 | * configuration. Hence the old configuration must be perserved in @old_state to | |
2523 | * be able to call this function. | |
2524 | * | |
2525 | * This function must also be called on the new state when the atomic update | |
2526 | * fails at any point after calling drm_atomic_helper_prepare_planes(). | |
2527 | */ | |
2528 | void drm_atomic_helper_cleanup_planes(struct drm_device *dev, | |
2529 | struct drm_atomic_state *old_state) | |
2530 | { | |
df63b999 | 2531 | struct drm_plane *plane; |
415c3ac3 | 2532 | struct drm_plane_state *old_plane_state, *new_plane_state; |
c2fcd274 DV |
2533 | int i; |
2534 | ||
415c3ac3 | 2535 | for_each_oldnew_plane_in_state(old_state, plane, old_plane_state, new_plane_state, i) { |
b5ceff20 | 2536 | const struct drm_plane_helper_funcs *funcs; |
415c3ac3 ML |
2537 | struct drm_plane_state *plane_state; |
2538 | ||
2539 | /* | |
2540 | * This might be called before swapping when commit is aborted, | |
2541 | * in which case we have to cleanup the new state. | |
2542 | */ | |
2543 | if (old_plane_state == plane->state) | |
2544 | plane_state = new_plane_state; | |
2545 | else | |
2546 | plane_state = old_plane_state; | |
c2fcd274 | 2547 | |
c2fcd274 DV |
2548 | funcs = plane->helper_private; |
2549 | ||
844f9111 ML |
2550 | if (funcs->cleanup_fb) |
2551 | funcs->cleanup_fb(plane, plane_state); | |
c2fcd274 DV |
2552 | } |
2553 | } | |
2554 | EXPORT_SYMBOL(drm_atomic_helper_cleanup_planes); | |
2555 | ||
2556 | /** | |
2557 | * drm_atomic_helper_swap_state - store atomic state into current sw state | |
c2fcd274 | 2558 | * @state: atomic state |
c066d231 | 2559 | * @stall: stall for preceeding commits |
c2fcd274 DV |
2560 | * |
2561 | * This function stores the atomic state into the current state pointers in all | |
2562 | * driver objects. It should be called after all failing steps have been done | |
2563 | * and succeeded, but before the actual hardware state is committed. | |
2564 | * | |
2565 | * For cleanup and error recovery the current state for all changed objects will | |
c066d231 | 2566 | * be swapped into @state. |
c2fcd274 DV |
2567 | * |
2568 | * With that sequence it fits perfectly into the plane prepare/cleanup sequence: | |
2569 | * | |
2570 | * 1. Call drm_atomic_helper_prepare_planes() with the staged atomic state. | |
2571 | * | |
2572 | * 2. Do any other steps that might fail. | |
2573 | * | |
2574 | * 3. Put the staged state into the current state pointers with this function. | |
2575 | * | |
2576 | * 4. Actually commit the hardware state. | |
2577 | * | |
26196f7e | 2578 | * 5. Call drm_atomic_helper_cleanup_planes() with @state, which since step 3 |
c2fcd274 | 2579 | * contains the old state. Also do any other cleanup required with that state. |
a095caa7 DV |
2580 | * |
2581 | * @stall must be set when nonblocking commits for this driver directly access | |
6806cdf9 DV |
2582 | * the &drm_plane.state, &drm_crtc.state or &drm_connector.state pointer. With |
2583 | * the current atomic helpers this is almost always the case, since the helpers | |
a095caa7 | 2584 | * don't pass the right state structures to the callbacks. |
c066d231 ML |
2585 | * |
2586 | * Returns: | |
2587 | * | |
c4bbb735 ML |
2588 | * Returns 0 on success. Can return -ERESTARTSYS when @stall is true and the |
2589 | * waiting for the previous commits has been interrupted. | |
c2fcd274 | 2590 | */ |
c066d231 | 2591 | int drm_atomic_helper_swap_state(struct drm_atomic_state *state, |
5e84c269 | 2592 | bool stall) |
c2fcd274 | 2593 | { |
c4bbb735 | 2594 | int i, ret; |
be9174a4 | 2595 | struct drm_connector *connector; |
415c3ac3 | 2596 | struct drm_connector_state *old_conn_state, *new_conn_state; |
be9174a4 | 2597 | struct drm_crtc *crtc; |
415c3ac3 | 2598 | struct drm_crtc_state *old_crtc_state, *new_crtc_state; |
be9174a4 | 2599 | struct drm_plane *plane; |
415c3ac3 | 2600 | struct drm_plane_state *old_plane_state, *new_plane_state; |
a095caa7 | 2601 | struct drm_crtc_commit *commit; |
a4370c77 VS |
2602 | struct drm_private_obj *obj; |
2603 | struct drm_private_state *old_obj_state, *new_obj_state; | |
a095caa7 DV |
2604 | |
2605 | if (stall) { | |
21a01abb ML |
2606 | /* |
2607 | * We have to stall for hw_done here before | |
2608 | * drm_atomic_helper_wait_for_dependencies() because flip | |
2609 | * depth > 1 is not yet supported by all drivers. As long as | |
2610 | * obj->state is directly dereferenced anywhere in the drivers | |
2611 | * atomic_commit_tail function, then it's unsafe to swap state | |
2612 | * before drm_atomic_helper_commit_hw_done() is called. | |
2613 | */ | |
2614 | ||
163bcc2c ML |
2615 | for_each_old_crtc_in_state(state, crtc, old_crtc_state, i) { |
2616 | commit = old_crtc_state->commit; | |
a095caa7 DV |
2617 | |
2618 | if (!commit) | |
2619 | continue; | |
2620 | ||
c4bbb735 | 2621 | ret = wait_for_completion_interruptible(&commit->hw_done); |
c4bbb735 ML |
2622 | if (ret) |
2623 | return ret; | |
a095caa7 | 2624 | } |
21a01abb ML |
2625 | |
2626 | for_each_old_connector_in_state(state, connector, old_conn_state, i) { | |
2627 | commit = old_conn_state->commit; | |
a095caa7 DV |
2628 | |
2629 | if (!commit) | |
2630 | continue; | |
2631 | ||
c4bbb735 | 2632 | ret = wait_for_completion_interruptible(&commit->hw_done); |
21a01abb ML |
2633 | if (ret) |
2634 | return ret; | |
2635 | } | |
c4bbb735 | 2636 | |
21a01abb ML |
2637 | for_each_old_plane_in_state(state, plane, old_plane_state, i) { |
2638 | commit = old_plane_state->commit; | |
2639 | ||
2640 | if (!commit) | |
2641 | continue; | |
2642 | ||
2643 | ret = wait_for_completion_interruptible(&commit->hw_done); | |
c4bbb735 ML |
2644 | if (ret) |
2645 | return ret; | |
a095caa7 DV |
2646 | } |
2647 | } | |
c2fcd274 | 2648 | |
415c3ac3 | 2649 | for_each_oldnew_connector_in_state(state, connector, old_conn_state, new_conn_state, i) { |
581e49fe ML |
2650 | WARN_ON(connector->state != old_conn_state); |
2651 | ||
415c3ac3 ML |
2652 | old_conn_state->state = state; |
2653 | new_conn_state->state = NULL; | |
2654 | ||
2655 | state->connectors[i].state = old_conn_state; | |
2656 | connector->state = new_conn_state; | |
c2fcd274 DV |
2657 | } |
2658 | ||
415c3ac3 | 2659 | for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) { |
581e49fe ML |
2660 | WARN_ON(crtc->state != old_crtc_state); |
2661 | ||
415c3ac3 ML |
2662 | old_crtc_state->state = state; |
2663 | new_crtc_state->state = NULL; | |
2664 | ||
2665 | state->crtcs[i].state = old_crtc_state; | |
2666 | crtc->state = new_crtc_state; | |
a095caa7 | 2667 | |
163bcc2c | 2668 | if (new_crtc_state->commit) { |
a095caa7 | 2669 | spin_lock(&crtc->commit_lock); |
163bcc2c | 2670 | list_add(&new_crtc_state->commit->commit_entry, |
a095caa7 DV |
2671 | &crtc->commit_list); |
2672 | spin_unlock(&crtc->commit_lock); | |
2673 | ||
163bcc2c | 2674 | new_crtc_state->commit->event = NULL; |
a095caa7 | 2675 | } |
c2fcd274 DV |
2676 | } |
2677 | ||
415c3ac3 | 2678 | for_each_oldnew_plane_in_state(state, plane, old_plane_state, new_plane_state, i) { |
581e49fe ML |
2679 | WARN_ON(plane->state != old_plane_state); |
2680 | ||
415c3ac3 ML |
2681 | old_plane_state->state = state; |
2682 | new_plane_state->state = NULL; | |
2683 | ||
2684 | state->planes[i].state = old_plane_state; | |
2685 | plane->state = new_plane_state; | |
c2fcd274 | 2686 | } |
b430c27a | 2687 | |
a4370c77 VS |
2688 | for_each_oldnew_private_obj_in_state(state, obj, old_obj_state, new_obj_state, i) { |
2689 | WARN_ON(obj->state != old_obj_state); | |
2690 | ||
2691 | old_obj_state->state = state; | |
2692 | new_obj_state->state = NULL; | |
2693 | ||
2694 | state->private_objs[i].state = old_obj_state; | |
2695 | obj->state = new_obj_state; | |
2696 | } | |
c066d231 ML |
2697 | |
2698 | return 0; | |
c2fcd274 DV |
2699 | } |
2700 | EXPORT_SYMBOL(drm_atomic_helper_swap_state); | |
042652ed DV |
2701 | |
2702 | /** | |
2703 | * drm_atomic_helper_update_plane - Helper for primary plane update using atomic | |
2704 | * @plane: plane object to update | |
2705 | * @crtc: owning CRTC of owning plane | |
2706 | * @fb: framebuffer to flip onto plane | |
2707 | * @crtc_x: x offset of primary plane on crtc | |
2708 | * @crtc_y: y offset of primary plane on crtc | |
2709 | * @crtc_w: width of primary plane rectangle on crtc | |
2710 | * @crtc_h: height of primary plane rectangle on crtc | |
2711 | * @src_x: x offset of @fb for panning | |
2712 | * @src_y: y offset of @fb for panning | |
2713 | * @src_w: width of source rectangle in @fb | |
2714 | * @src_h: height of source rectangle in @fb | |
34a2ab5e | 2715 | * @ctx: lock acquire context |
042652ed DV |
2716 | * |
2717 | * Provides a default plane update handler using the atomic driver interface. | |
2718 | * | |
2719 | * RETURNS: | |
2720 | * Zero on success, error code on failure | |
2721 | */ | |
2722 | int drm_atomic_helper_update_plane(struct drm_plane *plane, | |
2723 | struct drm_crtc *crtc, | |
2724 | struct drm_framebuffer *fb, | |
2725 | int crtc_x, int crtc_y, | |
2726 | unsigned int crtc_w, unsigned int crtc_h, | |
2727 | uint32_t src_x, uint32_t src_y, | |
34a2ab5e DV |
2728 | uint32_t src_w, uint32_t src_h, |
2729 | struct drm_modeset_acquire_ctx *ctx) | |
042652ed DV |
2730 | { |
2731 | struct drm_atomic_state *state; | |
2732 | struct drm_plane_state *plane_state; | |
2733 | int ret = 0; | |
2734 | ||
2735 | state = drm_atomic_state_alloc(plane->dev); | |
2736 | if (!state) | |
2737 | return -ENOMEM; | |
2738 | ||
d26f96c7 | 2739 | state->acquire_ctx = ctx; |
042652ed DV |
2740 | plane_state = drm_atomic_get_plane_state(state, plane); |
2741 | if (IS_ERR(plane_state)) { | |
2742 | ret = PTR_ERR(plane_state); | |
2743 | goto fail; | |
2744 | } | |
2745 | ||
07cc0ef6 | 2746 | ret = drm_atomic_set_crtc_for_plane(plane_state, crtc); |
042652ed DV |
2747 | if (ret != 0) |
2748 | goto fail; | |
321ebf04 | 2749 | drm_atomic_set_fb_for_plane(plane_state, fb); |
042652ed DV |
2750 | plane_state->crtc_x = crtc_x; |
2751 | plane_state->crtc_y = crtc_y; | |
042652ed | 2752 | plane_state->crtc_w = crtc_w; |
02e6f379 | 2753 | plane_state->crtc_h = crtc_h; |
042652ed DV |
2754 | plane_state->src_x = src_x; |
2755 | plane_state->src_y = src_y; | |
042652ed | 2756 | plane_state->src_w = src_w; |
02e6f379 | 2757 | plane_state->src_h = src_h; |
042652ed | 2758 | |
3671c580 DV |
2759 | if (plane == crtc->cursor) |
2760 | state->legacy_cursor_update = true; | |
2761 | ||
042652ed | 2762 | ret = drm_atomic_commit(state); |
042652ed | 2763 | fail: |
0853695c | 2764 | drm_atomic_state_put(state); |
042652ed | 2765 | return ret; |
042652ed DV |
2766 | } |
2767 | EXPORT_SYMBOL(drm_atomic_helper_update_plane); | |
2768 | ||
2769 | /** | |
2770 | * drm_atomic_helper_disable_plane - Helper for primary plane disable using * atomic | |
2771 | * @plane: plane to disable | |
19315294 | 2772 | * @ctx: lock acquire context |
042652ed DV |
2773 | * |
2774 | * Provides a default plane disable handler using the atomic driver interface. | |
2775 | * | |
2776 | * RETURNS: | |
2777 | * Zero on success, error code on failure | |
2778 | */ | |
19315294 DV |
2779 | int drm_atomic_helper_disable_plane(struct drm_plane *plane, |
2780 | struct drm_modeset_acquire_ctx *ctx) | |
042652ed DV |
2781 | { |
2782 | struct drm_atomic_state *state; | |
2783 | struct drm_plane_state *plane_state; | |
2784 | int ret = 0; | |
2785 | ||
2786 | state = drm_atomic_state_alloc(plane->dev); | |
2787 | if (!state) | |
2788 | return -ENOMEM; | |
2789 | ||
d26f96c7 | 2790 | state->acquire_ctx = ctx; |
042652ed DV |
2791 | plane_state = drm_atomic_get_plane_state(state, plane); |
2792 | if (IS_ERR(plane_state)) { | |
2793 | ret = PTR_ERR(plane_state); | |
2794 | goto fail; | |
2795 | } | |
2796 | ||
a36c027d | 2797 | if (plane_state->crtc && plane_state->crtc->cursor == plane) |
24e79d0d ML |
2798 | plane_state->state->legacy_cursor_update = true; |
2799 | ||
bbb1e524 | 2800 | ret = __drm_atomic_helper_disable_plane(plane, plane_state); |
042652ed DV |
2801 | if (ret != 0) |
2802 | goto fail; | |
f02ad907 | 2803 | |
042652ed | 2804 | ret = drm_atomic_commit(state); |
042652ed | 2805 | fail: |
0853695c | 2806 | drm_atomic_state_put(state); |
042652ed | 2807 | return ret; |
042652ed DV |
2808 | } |
2809 | EXPORT_SYMBOL(drm_atomic_helper_disable_plane); | |
2810 | ||
bbb1e524 RC |
2811 | /* just used from fb-helper and atomic-helper: */ |
2812 | int __drm_atomic_helper_disable_plane(struct drm_plane *plane, | |
2813 | struct drm_plane_state *plane_state) | |
2814 | { | |
2815 | int ret; | |
2816 | ||
2817 | ret = drm_atomic_set_crtc_for_plane(plane_state, NULL); | |
2818 | if (ret != 0) | |
2819 | return ret; | |
2820 | ||
2821 | drm_atomic_set_fb_for_plane(plane_state, NULL); | |
2822 | plane_state->crtc_x = 0; | |
2823 | plane_state->crtc_y = 0; | |
bbb1e524 | 2824 | plane_state->crtc_w = 0; |
02e6f379 | 2825 | plane_state->crtc_h = 0; |
bbb1e524 RC |
2826 | plane_state->src_x = 0; |
2827 | plane_state->src_y = 0; | |
bbb1e524 | 2828 | plane_state->src_w = 0; |
02e6f379 | 2829 | plane_state->src_h = 0; |
bbb1e524 | 2830 | |
bbb1e524 RC |
2831 | return 0; |
2832 | } | |
2833 | ||
042652ed DV |
2834 | static int update_output_state(struct drm_atomic_state *state, |
2835 | struct drm_mode_set *set) | |
2836 | { | |
2837 | struct drm_device *dev = set->crtc->dev; | |
df63b999 | 2838 | struct drm_crtc *crtc; |
415c3ac3 | 2839 | struct drm_crtc_state *new_crtc_state; |
df63b999 | 2840 | struct drm_connector *connector; |
415c3ac3 | 2841 | struct drm_connector_state *new_conn_state; |
6ab520a2 | 2842 | int ret, i; |
042652ed DV |
2843 | |
2844 | ret = drm_modeset_lock(&dev->mode_config.connection_mutex, | |
2845 | state->acquire_ctx); | |
2846 | if (ret) | |
2847 | return ret; | |
2848 | ||
6ab520a2 ML |
2849 | /* First disable all connectors on the target crtc. */ |
2850 | ret = drm_atomic_add_affected_connectors(state, set->crtc); | |
2851 | if (ret) | |
2852 | return ret; | |
042652ed | 2853 | |
415c3ac3 ML |
2854 | for_each_new_connector_in_state(state, connector, new_conn_state, i) { |
2855 | if (new_conn_state->crtc == set->crtc) { | |
2856 | ret = drm_atomic_set_crtc_for_connector(new_conn_state, | |
042652ed DV |
2857 | NULL); |
2858 | if (ret) | |
2859 | return ret; | |
415c3ac3 | 2860 | |
40ee6fbe | 2861 | /* Make sure legacy setCrtc always re-trains */ |
415c3ac3 | 2862 | new_conn_state->link_status = DRM_LINK_STATUS_GOOD; |
042652ed | 2863 | } |
6ab520a2 | 2864 | } |
042652ed | 2865 | |
6ab520a2 ML |
2866 | /* Then set all connectors from set->connectors on the target crtc */ |
2867 | for (i = 0; i < set->num_connectors; i++) { | |
415c3ac3 | 2868 | new_conn_state = drm_atomic_get_connector_state(state, |
6ab520a2 | 2869 | set->connectors[i]); |
415c3ac3 ML |
2870 | if (IS_ERR(new_conn_state)) |
2871 | return PTR_ERR(new_conn_state); | |
6ab520a2 | 2872 | |
415c3ac3 | 2873 | ret = drm_atomic_set_crtc_for_connector(new_conn_state, |
6ab520a2 ML |
2874 | set->crtc); |
2875 | if (ret) | |
2876 | return ret; | |
042652ed DV |
2877 | } |
2878 | ||
415c3ac3 | 2879 | for_each_new_crtc_in_state(state, crtc, new_crtc_state, i) { |
042652ed DV |
2880 | /* Don't update ->enable for the CRTC in the set_config request, |
2881 | * since a mismatch would indicate a bug in the upper layers. | |
2882 | * The actual modeset code later on will catch any | |
2883 | * inconsistencies here. */ | |
2884 | if (crtc == set->crtc) | |
2885 | continue; | |
2886 | ||
415c3ac3 ML |
2887 | if (!new_crtc_state->connector_mask) { |
2888 | ret = drm_atomic_set_mode_prop_for_crtc(new_crtc_state, | |
c30f55a7 LP |
2889 | NULL); |
2890 | if (ret < 0) | |
2891 | return ret; | |
2892 | ||
415c3ac3 | 2893 | new_crtc_state->active = false; |
c30f55a7 | 2894 | } |
042652ed DV |
2895 | } |
2896 | ||
2897 | return 0; | |
2898 | } | |
2899 | ||
2900 | /** | |
2901 | * drm_atomic_helper_set_config - set a new config from userspace | |
2902 | * @set: mode set configuration | |
a4eff9aa | 2903 | * @ctx: lock acquisition context |
042652ed DV |
2904 | * |
2905 | * Provides a default crtc set_config handler using the atomic driver interface. | |
2906 | * | |
40ee6fbe MN |
2907 | * NOTE: For backwards compatibility with old userspace this automatically |
2908 | * resets the "link-status" property to GOOD, to force any link | |
2909 | * re-training. The SETCRTC ioctl does not define whether an update does | |
2910 | * need a full modeset or just a plane update, hence we're allowed to do | |
97e14fbe | 2911 | * that. See also drm_connector_set_link_status_property(). |
40ee6fbe | 2912 | * |
042652ed DV |
2913 | * Returns: |
2914 | * Returns 0 on success, negative errno numbers on failure. | |
2915 | */ | |
a4eff9aa DV |
2916 | int drm_atomic_helper_set_config(struct drm_mode_set *set, |
2917 | struct drm_modeset_acquire_ctx *ctx) | |
042652ed DV |
2918 | { |
2919 | struct drm_atomic_state *state; | |
2920 | struct drm_crtc *crtc = set->crtc; | |
042652ed DV |
2921 | int ret = 0; |
2922 | ||
2923 | state = drm_atomic_state_alloc(crtc->dev); | |
2924 | if (!state) | |
2925 | return -ENOMEM; | |
2926 | ||
38b6441e | 2927 | state->acquire_ctx = ctx; |
bbb1e524 RC |
2928 | ret = __drm_atomic_helper_set_config(set, state); |
2929 | if (ret != 0) | |
1fa4da04 | 2930 | goto fail; |
042652ed | 2931 | |
44596b8c ML |
2932 | ret = handle_conflicting_encoders(state, true); |
2933 | if (ret) | |
2934 | return ret; | |
2935 | ||
bbb1e524 | 2936 | ret = drm_atomic_commit(state); |
bbb1e524 | 2937 | |
1fa4da04 | 2938 | fail: |
0853695c | 2939 | drm_atomic_state_put(state); |
bbb1e524 | 2940 | return ret; |
bbb1e524 RC |
2941 | } |
2942 | EXPORT_SYMBOL(drm_atomic_helper_set_config); | |
2943 | ||
2944 | /* just used from fb-helper and atomic-helper: */ | |
2945 | int __drm_atomic_helper_set_config(struct drm_mode_set *set, | |
2946 | struct drm_atomic_state *state) | |
2947 | { | |
2948 | struct drm_crtc_state *crtc_state; | |
2949 | struct drm_plane_state *primary_state; | |
2950 | struct drm_crtc *crtc = set->crtc; | |
83926117 | 2951 | int hdisplay, vdisplay; |
bbb1e524 RC |
2952 | int ret; |
2953 | ||
2954 | crtc_state = drm_atomic_get_crtc_state(state, crtc); | |
2955 | if (IS_ERR(crtc_state)) | |
2956 | return PTR_ERR(crtc_state); | |
2957 | ||
2958 | primary_state = drm_atomic_get_plane_state(state, crtc->primary); | |
2959 | if (IS_ERR(primary_state)) | |
2960 | return PTR_ERR(primary_state); | |
e5b5341c | 2961 | |
042652ed DV |
2962 | if (!set->mode) { |
2963 | WARN_ON(set->fb); | |
2964 | WARN_ON(set->num_connectors); | |
2965 | ||
819364da DS |
2966 | ret = drm_atomic_set_mode_for_crtc(crtc_state, NULL); |
2967 | if (ret != 0) | |
bbb1e524 | 2968 | return ret; |
819364da | 2969 | |
eab3bbef | 2970 | crtc_state->active = false; |
e5b5341c | 2971 | |
07cc0ef6 | 2972 | ret = drm_atomic_set_crtc_for_plane(primary_state, NULL); |
e5b5341c | 2973 | if (ret != 0) |
bbb1e524 | 2974 | return ret; |
e5b5341c RC |
2975 | |
2976 | drm_atomic_set_fb_for_plane(primary_state, NULL); | |
2977 | ||
042652ed DV |
2978 | goto commit; |
2979 | } | |
2980 | ||
2981 | WARN_ON(!set->fb); | |
2982 | WARN_ON(!set->num_connectors); | |
2983 | ||
819364da DS |
2984 | ret = drm_atomic_set_mode_for_crtc(crtc_state, set->mode); |
2985 | if (ret != 0) | |
bbb1e524 | 2986 | return ret; |
819364da | 2987 | |
eab3bbef | 2988 | crtc_state->active = true; |
042652ed | 2989 | |
07cc0ef6 | 2990 | ret = drm_atomic_set_crtc_for_plane(primary_state, crtc); |
042652ed | 2991 | if (ret != 0) |
bbb1e524 RC |
2992 | return ret; |
2993 | ||
196cd5d3 | 2994 | drm_mode_get_hv_timing(set->mode, &hdisplay, &vdisplay); |
83926117 | 2995 | |
321ebf04 | 2996 | drm_atomic_set_fb_for_plane(primary_state, set->fb); |
042652ed DV |
2997 | primary_state->crtc_x = 0; |
2998 | primary_state->crtc_y = 0; | |
83926117 | 2999 | primary_state->crtc_w = hdisplay; |
02e6f379 | 3000 | primary_state->crtc_h = vdisplay; |
042652ed DV |
3001 | primary_state->src_x = set->x << 16; |
3002 | primary_state->src_y = set->y << 16; | |
bd2ef25d | 3003 | if (drm_rotation_90_or_270(primary_state->rotation)) { |
83926117 | 3004 | primary_state->src_w = vdisplay << 16; |
02e6f379 | 3005 | primary_state->src_h = hdisplay << 16; |
41121248 | 3006 | } else { |
83926117 | 3007 | primary_state->src_w = hdisplay << 16; |
02e6f379 | 3008 | primary_state->src_h = vdisplay << 16; |
41121248 | 3009 | } |
042652ed DV |
3010 | |
3011 | commit: | |
3012 | ret = update_output_state(state, set); | |
3013 | if (ret) | |
bbb1e524 | 3014 | return ret; |
042652ed | 3015 | |
042652ed | 3016 | return 0; |
042652ed | 3017 | } |
042652ed | 3018 | |
5e9cfeba VS |
3019 | static int __drm_atomic_helper_disable_all(struct drm_device *dev, |
3020 | struct drm_modeset_acquire_ctx *ctx, | |
3021 | bool clean_old_fbs) | |
14942760 TR |
3022 | { |
3023 | struct drm_atomic_state *state; | |
9b2104f4 | 3024 | struct drm_connector_state *conn_state; |
14942760 | 3025 | struct drm_connector *conn; |
9b2104f4 ML |
3026 | struct drm_plane_state *plane_state; |
3027 | struct drm_plane *plane; | |
3028 | struct drm_crtc_state *crtc_state; | |
3029 | struct drm_crtc *crtc; | |
3030 | int ret, i; | |
14942760 TR |
3031 | |
3032 | state = drm_atomic_state_alloc(dev); | |
3033 | if (!state) | |
3034 | return -ENOMEM; | |
3035 | ||
3036 | state->acquire_ctx = ctx; | |
3037 | ||
9b2104f4 | 3038 | drm_for_each_crtc(crtc, dev) { |
14942760 TR |
3039 | crtc_state = drm_atomic_get_crtc_state(state, crtc); |
3040 | if (IS_ERR(crtc_state)) { | |
9b2104f4 | 3041 | ret = PTR_ERR(crtc_state); |
14942760 TR |
3042 | goto free; |
3043 | } | |
3044 | ||
3045 | crtc_state->active = false; | |
9b2104f4 ML |
3046 | |
3047 | ret = drm_atomic_set_mode_prop_for_crtc(crtc_state, NULL); | |
3048 | if (ret < 0) | |
3049 | goto free; | |
3050 | ||
3051 | ret = drm_atomic_add_affected_planes(state, crtc); | |
3052 | if (ret < 0) | |
3053 | goto free; | |
3054 | ||
3055 | ret = drm_atomic_add_affected_connectors(state, crtc); | |
3056 | if (ret < 0) | |
3057 | goto free; | |
3058 | } | |
3059 | ||
dfb8bb3b | 3060 | for_each_new_connector_in_state(state, conn, conn_state, i) { |
9b2104f4 ML |
3061 | ret = drm_atomic_set_crtc_for_connector(conn_state, NULL); |
3062 | if (ret < 0) | |
3063 | goto free; | |
3064 | } | |
3065 | ||
dfb8bb3b | 3066 | for_each_new_plane_in_state(state, plane, plane_state, i) { |
9b2104f4 ML |
3067 | ret = drm_atomic_set_crtc_for_plane(plane_state, NULL); |
3068 | if (ret < 0) | |
3069 | goto free; | |
3070 | ||
3071 | drm_atomic_set_fb_for_plane(plane_state, NULL); | |
14942760 TR |
3072 | } |
3073 | ||
9b2104f4 | 3074 | ret = drm_atomic_commit(state); |
14942760 | 3075 | free: |
0853695c | 3076 | drm_atomic_state_put(state); |
9b2104f4 | 3077 | return ret; |
14942760 | 3078 | } |
9b2104f4 | 3079 | |
5e9cfeba VS |
3080 | /** |
3081 | * drm_atomic_helper_disable_all - disable all currently active outputs | |
3082 | * @dev: DRM device | |
3083 | * @ctx: lock acquisition context | |
3084 | * | |
3085 | * Loops through all connectors, finding those that aren't turned off and then | |
3086 | * turns them off by setting their DPMS mode to OFF and deactivating the CRTC | |
3087 | * that they are connected to. | |
3088 | * | |
3089 | * This is used for example in suspend/resume to disable all currently active | |
3090 | * functions when suspending. If you just want to shut down everything at e.g. | |
3091 | * driver unload, look at drm_atomic_helper_shutdown(). | |
3092 | * | |
3093 | * Note that if callers haven't already acquired all modeset locks this might | |
3094 | * return -EDEADLK, which must be handled by calling drm_modeset_backoff(). | |
3095 | * | |
3096 | * Returns: | |
3097 | * 0 on success or a negative error code on failure. | |
3098 | * | |
3099 | * See also: | |
3100 | * drm_atomic_helper_suspend(), drm_atomic_helper_resume() and | |
3101 | * drm_atomic_helper_shutdown(). | |
3102 | */ | |
3103 | int drm_atomic_helper_disable_all(struct drm_device *dev, | |
3104 | struct drm_modeset_acquire_ctx *ctx) | |
3105 | { | |
3106 | return __drm_atomic_helper_disable_all(dev, ctx, false); | |
3107 | } | |
14942760 TR |
3108 | EXPORT_SYMBOL(drm_atomic_helper_disable_all); |
3109 | ||
18dddadc DV |
3110 | /** |
3111 | * drm_atomic_helper_shutdown - shutdown all CRTC | |
3112 | * @dev: DRM device | |
3113 | * | |
3114 | * This shuts down all CRTC, which is useful for driver unloading. Shutdown on | |
3115 | * suspend should instead be handled with drm_atomic_helper_suspend(), since | |
3116 | * that also takes a snapshot of the modeset state to be restored on resume. | |
3117 | * | |
3118 | * This is just a convenience wrapper around drm_atomic_helper_disable_all(), | |
3119 | * and it is the atomic version of drm_crtc_force_disable_all(). | |
3120 | */ | |
3121 | void drm_atomic_helper_shutdown(struct drm_device *dev) | |
3122 | { | |
3123 | struct drm_modeset_acquire_ctx ctx; | |
3124 | int ret; | |
3125 | ||
3126 | drm_modeset_acquire_init(&ctx, 0); | |
3127 | while (1) { | |
3128 | ret = drm_modeset_lock_all_ctx(dev, &ctx); | |
3129 | if (!ret) | |
5e9cfeba | 3130 | ret = __drm_atomic_helper_disable_all(dev, &ctx, true); |
18dddadc DV |
3131 | |
3132 | if (ret != -EDEADLK) | |
3133 | break; | |
3134 | ||
3135 | drm_modeset_backoff(&ctx); | |
3136 | } | |
3137 | ||
3138 | if (ret) | |
3139 | DRM_ERROR("Disabling all crtc's during unload failed with %i\n", ret); | |
3140 | ||
3141 | drm_modeset_drop_locks(&ctx); | |
3142 | drm_modeset_acquire_fini(&ctx); | |
3143 | } | |
3144 | EXPORT_SYMBOL(drm_atomic_helper_shutdown); | |
3145 | ||
14942760 TR |
3146 | /** |
3147 | * drm_atomic_helper_suspend - subsystem-level suspend helper | |
3148 | * @dev: DRM device | |
3149 | * | |
3150 | * Duplicates the current atomic state, disables all active outputs and then | |
3151 | * returns a pointer to the original atomic state to the caller. Drivers can | |
3152 | * pass this pointer to the drm_atomic_helper_resume() helper upon resume to | |
3153 | * restore the output configuration that was active at the time the system | |
3154 | * entered suspend. | |
3155 | * | |
3156 | * Note that it is potentially unsafe to use this. The atomic state object | |
3157 | * returned by this function is assumed to be persistent. Drivers must ensure | |
3158 | * that this holds true. Before calling this function, drivers must make sure | |
3159 | * to suspend fbdev emulation so that nothing can be using the device. | |
3160 | * | |
3161 | * Returns: | |
3162 | * A pointer to a copy of the state before suspend on success or an ERR_PTR()- | |
3163 | * encoded error code on failure. Drivers should store the returned atomic | |
3164 | * state object and pass it to the drm_atomic_helper_resume() helper upon | |
3165 | * resume. | |
3166 | * | |
3167 | * See also: | |
3168 | * drm_atomic_helper_duplicate_state(), drm_atomic_helper_disable_all(), | |
581e49fe | 3169 | * drm_atomic_helper_resume(), drm_atomic_helper_commit_duplicated_state() |
14942760 TR |
3170 | */ |
3171 | struct drm_atomic_state *drm_atomic_helper_suspend(struct drm_device *dev) | |
3172 | { | |
3173 | struct drm_modeset_acquire_ctx ctx; | |
3174 | struct drm_atomic_state *state; | |
3175 | int err; | |
3176 | ||
3177 | drm_modeset_acquire_init(&ctx, 0); | |
3178 | ||
3179 | retry: | |
3180 | err = drm_modeset_lock_all_ctx(dev, &ctx); | |
3181 | if (err < 0) { | |
3182 | state = ERR_PTR(err); | |
3183 | goto unlock; | |
3184 | } | |
3185 | ||
3186 | state = drm_atomic_helper_duplicate_state(dev, &ctx); | |
3187 | if (IS_ERR(state)) | |
3188 | goto unlock; | |
3189 | ||
3190 | err = drm_atomic_helper_disable_all(dev, &ctx); | |
3191 | if (err < 0) { | |
0853695c | 3192 | drm_atomic_state_put(state); |
14942760 TR |
3193 | state = ERR_PTR(err); |
3194 | goto unlock; | |
3195 | } | |
3196 | ||
3197 | unlock: | |
3198 | if (PTR_ERR(state) == -EDEADLK) { | |
3199 | drm_modeset_backoff(&ctx); | |
3200 | goto retry; | |
3201 | } | |
3202 | ||
3203 | drm_modeset_drop_locks(&ctx); | |
3204 | drm_modeset_acquire_fini(&ctx); | |
3205 | return state; | |
3206 | } | |
3207 | EXPORT_SYMBOL(drm_atomic_helper_suspend); | |
3208 | ||
581e49fe ML |
3209 | /** |
3210 | * drm_atomic_helper_commit_duplicated_state - commit duplicated state | |
3211 | * @state: duplicated atomic state to commit | |
3212 | * @ctx: pointer to acquire_ctx to use for commit. | |
3213 | * | |
3214 | * The state returned by drm_atomic_helper_duplicate_state() and | |
3215 | * drm_atomic_helper_suspend() is partially invalid, and needs to | |
3216 | * be fixed up before commit. | |
3217 | * | |
3218 | * Returns: | |
3219 | * 0 on success or a negative error code on failure. | |
3220 | * | |
3221 | * See also: | |
3222 | * drm_atomic_helper_suspend() | |
3223 | */ | |
3224 | int drm_atomic_helper_commit_duplicated_state(struct drm_atomic_state *state, | |
3225 | struct drm_modeset_acquire_ctx *ctx) | |
3226 | { | |
3227 | int i; | |
3228 | struct drm_plane *plane; | |
415c3ac3 | 3229 | struct drm_plane_state *new_plane_state; |
581e49fe | 3230 | struct drm_connector *connector; |
415c3ac3 | 3231 | struct drm_connector_state *new_conn_state; |
581e49fe | 3232 | struct drm_crtc *crtc; |
415c3ac3 | 3233 | struct drm_crtc_state *new_crtc_state; |
581e49fe ML |
3234 | |
3235 | state->acquire_ctx = ctx; | |
3236 | ||
e00fb856 | 3237 | for_each_new_plane_in_state(state, plane, new_plane_state, i) |
581e49fe ML |
3238 | state->planes[i].old_state = plane->state; |
3239 | ||
415c3ac3 | 3240 | for_each_new_crtc_in_state(state, crtc, new_crtc_state, i) |
581e49fe ML |
3241 | state->crtcs[i].old_state = crtc->state; |
3242 | ||
415c3ac3 | 3243 | for_each_new_connector_in_state(state, connector, new_conn_state, i) |
581e49fe ML |
3244 | state->connectors[i].old_state = connector->state; |
3245 | ||
5e9cfeba | 3246 | return drm_atomic_commit(state); |
581e49fe ML |
3247 | } |
3248 | EXPORT_SYMBOL(drm_atomic_helper_commit_duplicated_state); | |
3249 | ||
14942760 TR |
3250 | /** |
3251 | * drm_atomic_helper_resume - subsystem-level resume helper | |
3252 | * @dev: DRM device | |
3253 | * @state: atomic state to resume to | |
3254 | * | |
3255 | * Calls drm_mode_config_reset() to synchronize hardware and software states, | |
3256 | * grabs all modeset locks and commits the atomic state object. This can be | |
3257 | * used in conjunction with the drm_atomic_helper_suspend() helper to | |
3258 | * implement suspend/resume for drivers that support atomic mode-setting. | |
3259 | * | |
3260 | * Returns: | |
3261 | * 0 on success or a negative error code on failure. | |
3262 | * | |
3263 | * See also: | |
3264 | * drm_atomic_helper_suspend() | |
3265 | */ | |
3266 | int drm_atomic_helper_resume(struct drm_device *dev, | |
3267 | struct drm_atomic_state *state) | |
3268 | { | |
a5b8444e | 3269 | struct drm_modeset_acquire_ctx ctx; |
14942760 TR |
3270 | int err; |
3271 | ||
3272 | drm_mode_config_reset(dev); | |
581e49fe | 3273 | |
a5b8444e DV |
3274 | drm_modeset_acquire_init(&ctx, 0); |
3275 | while (1) { | |
869e188a DV |
3276 | err = drm_modeset_lock_all_ctx(dev, &ctx); |
3277 | if (err) | |
3278 | goto out; | |
3279 | ||
a5b8444e | 3280 | err = drm_atomic_helper_commit_duplicated_state(state, &ctx); |
869e188a | 3281 | out: |
a5b8444e DV |
3282 | if (err != -EDEADLK) |
3283 | break; | |
3284 | ||
3285 | drm_modeset_backoff(&ctx); | |
3286 | } | |
3287 | ||
6d281b1f | 3288 | drm_atomic_state_put(state); |
a5b8444e DV |
3289 | drm_modeset_drop_locks(&ctx); |
3290 | drm_modeset_acquire_fini(&ctx); | |
14942760 TR |
3291 | |
3292 | return err; | |
3293 | } | |
3294 | EXPORT_SYMBOL(drm_atomic_helper_resume); | |
3295 | ||
8c3a8181 DV |
3296 | static int page_flip_common(struct drm_atomic_state *state, |
3297 | struct drm_crtc *crtc, | |
3298 | struct drm_framebuffer *fb, | |
3299 | struct drm_pending_vblank_event *event, | |
3300 | uint32_t flags) | |
f869a6ec AG |
3301 | { |
3302 | struct drm_plane *plane = crtc->primary; | |
3303 | struct drm_plane_state *plane_state; | |
3304 | struct drm_crtc_state *crtc_state; | |
3305 | int ret = 0; | |
3306 | ||
3307 | crtc_state = drm_atomic_get_crtc_state(state, crtc); | |
3308 | if (IS_ERR(crtc_state)) | |
3309 | return PTR_ERR(crtc_state); | |
3310 | ||
3311 | crtc_state->event = event; | |
6cbe5c46 | 3312 | crtc_state->pageflip_flags = flags; |
f869a6ec AG |
3313 | |
3314 | plane_state = drm_atomic_get_plane_state(state, plane); | |
3315 | if (IS_ERR(plane_state)) | |
3316 | return PTR_ERR(plane_state); | |
3317 | ||
f869a6ec AG |
3318 | ret = drm_atomic_set_crtc_for_plane(plane_state, crtc); |
3319 | if (ret != 0) | |
3320 | return ret; | |
3321 | drm_atomic_set_fb_for_plane(plane_state, fb); | |
3322 | ||
3323 | /* Make sure we don't accidentally do a full modeset. */ | |
3324 | state->allow_modeset = false; | |
3325 | if (!crtc_state->active) { | |
6ac7c548 RK |
3326 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] disabled, rejecting legacy flip\n", |
3327 | crtc->base.id, crtc->name); | |
f869a6ec AG |
3328 | return -EINVAL; |
3329 | } | |
3330 | ||
3331 | return ret; | |
3332 | } | |
3333 | ||
8bc0f312 DV |
3334 | /** |
3335 | * drm_atomic_helper_page_flip - execute a legacy page flip | |
3336 | * @crtc: DRM crtc | |
3337 | * @fb: DRM framebuffer | |
3338 | * @event: optional DRM event to signal upon completion | |
3339 | * @flags: flip flags for non-vblank sync'ed updates | |
41292b1f | 3340 | * @ctx: lock acquisition context |
8bc0f312 | 3341 | * |
f869a6ec AG |
3342 | * Provides a default &drm_crtc_funcs.page_flip implementation |
3343 | * using the atomic driver interface. | |
8bc0f312 | 3344 | * |
8bc0f312 DV |
3345 | * Returns: |
3346 | * Returns 0 on success, negative errno numbers on failure. | |
f869a6ec AG |
3347 | * |
3348 | * See also: | |
3349 | * drm_atomic_helper_page_flip_target() | |
8bc0f312 DV |
3350 | */ |
3351 | int drm_atomic_helper_page_flip(struct drm_crtc *crtc, | |
3352 | struct drm_framebuffer *fb, | |
3353 | struct drm_pending_vblank_event *event, | |
41292b1f DV |
3354 | uint32_t flags, |
3355 | struct drm_modeset_acquire_ctx *ctx) | |
8bc0f312 DV |
3356 | { |
3357 | struct drm_plane *plane = crtc->primary; | |
3358 | struct drm_atomic_state *state; | |
8bc0f312 DV |
3359 | int ret = 0; |
3360 | ||
8bc0f312 DV |
3361 | state = drm_atomic_state_alloc(plane->dev); |
3362 | if (!state) | |
3363 | return -ENOMEM; | |
3364 | ||
043e7fb6 | 3365 | state->acquire_ctx = ctx; |
f869a6ec | 3366 | |
6cbe5c46 | 3367 | ret = page_flip_common(state, crtc, fb, event, flags); |
f869a6ec | 3368 | if (ret != 0) |
8bc0f312 | 3369 | goto fail; |
8bc0f312 | 3370 | |
f869a6ec | 3371 | ret = drm_atomic_nonblocking_commit(state); |
f869a6ec | 3372 | fail: |
f869a6ec AG |
3373 | drm_atomic_state_put(state); |
3374 | return ret; | |
f869a6ec AG |
3375 | } |
3376 | EXPORT_SYMBOL(drm_atomic_helper_page_flip); | |
3377 | ||
3378 | /** | |
3379 | * drm_atomic_helper_page_flip_target - do page flip on target vblank period. | |
3380 | * @crtc: DRM crtc | |
3381 | * @fb: DRM framebuffer | |
3382 | * @event: optional DRM event to signal upon completion | |
3383 | * @flags: flip flags for non-vblank sync'ed updates | |
3384 | * @target: specifying the target vblank period when the flip to take effect | |
41292b1f | 3385 | * @ctx: lock acquisition context |
f869a6ec AG |
3386 | * |
3387 | * Provides a default &drm_crtc_funcs.page_flip_target implementation. | |
3388 | * Similar to drm_atomic_helper_page_flip() with extra parameter to specify | |
3389 | * target vblank period to flip. | |
3390 | * | |
3391 | * Returns: | |
3392 | * Returns 0 on success, negative errno numbers on failure. | |
3393 | */ | |
8c3a8181 DV |
3394 | int drm_atomic_helper_page_flip_target(struct drm_crtc *crtc, |
3395 | struct drm_framebuffer *fb, | |
3396 | struct drm_pending_vblank_event *event, | |
3397 | uint32_t flags, | |
3398 | uint32_t target, | |
3399 | struct drm_modeset_acquire_ctx *ctx) | |
f869a6ec AG |
3400 | { |
3401 | struct drm_plane *plane = crtc->primary; | |
3402 | struct drm_atomic_state *state; | |
3403 | struct drm_crtc_state *crtc_state; | |
3404 | int ret = 0; | |
3405 | ||
f869a6ec AG |
3406 | state = drm_atomic_state_alloc(plane->dev); |
3407 | if (!state) | |
3408 | return -ENOMEM; | |
3409 | ||
043e7fb6 | 3410 | state->acquire_ctx = ctx; |
f869a6ec | 3411 | |
6cbe5c46 | 3412 | ret = page_flip_common(state, crtc, fb, event, flags); |
8bc0f312 DV |
3413 | if (ret != 0) |
3414 | goto fail; | |
8bc0f312 | 3415 | |
b4d93679 | 3416 | crtc_state = drm_atomic_get_new_crtc_state(state, crtc); |
f869a6ec | 3417 | if (WARN_ON(!crtc_state)) { |
4cba6850 DV |
3418 | ret = -EINVAL; |
3419 | goto fail; | |
3420 | } | |
f869a6ec | 3421 | crtc_state->target_vblank = target; |
4cba6850 | 3422 | |
b837ba0a | 3423 | ret = drm_atomic_nonblocking_commit(state); |
8bc0f312 | 3424 | fail: |
0853695c | 3425 | drm_atomic_state_put(state); |
8bc0f312 | 3426 | return ret; |
8bc0f312 | 3427 | } |
f869a6ec | 3428 | EXPORT_SYMBOL(drm_atomic_helper_page_flip_target); |