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 | 31 | #include <drm/drm_plane_helper.h> |
623369e5 | 32 | #include <drm/drm_atomic_helper.h> |
935774cd | 33 | #include <drm/drm_writeback.h> |
d9778b40 | 34 | #include <drm/drm_damage_helper.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 | |
1e55a53a | 333 | * display on a connector that was destroyed after it's been notified, |
de9f8eea | 334 | * not before. |
022debad LP |
335 | * |
336 | * Additionally, we also want to ignore connector registration when | |
337 | * we're trying to restore an atomic state during system resume since | |
338 | * there's a chance the connector may have been destroyed during the | |
339 | * process, but it's better to ignore that then cause | |
340 | * drm_atomic_helper_resume() to fail. | |
de9f8eea | 341 | */ |
022debad LP |
342 | if (!state->duplicated && drm_connector_is_unregistered(connector) && |
343 | crtc_state->active) { | |
de9f8eea LP |
344 | DRM_DEBUG_ATOMIC("[CONNECTOR:%d:%s] is not registered\n", |
345 | connector->base.id, connector->name); | |
346 | return -EINVAL; | |
347 | } | |
348 | ||
623369e5 | 349 | funcs = connector->helper_private; |
3b8a684b DV |
350 | |
351 | if (funcs->atomic_best_encoder) | |
352 | new_encoder = funcs->atomic_best_encoder(connector, | |
415c3ac3 | 353 | new_connector_state); |
c61b93fe | 354 | else if (funcs->best_encoder) |
3b8a684b | 355 | new_encoder = funcs->best_encoder(connector); |
c61b93fe | 356 | else |
297e30b5 | 357 | new_encoder = pick_single_encoder_for_connector(connector); |
623369e5 DV |
358 | |
359 | if (!new_encoder) { | |
17a38d9c DV |
360 | DRM_DEBUG_ATOMIC("No suitable encoder found for [CONNECTOR:%d:%s]\n", |
361 | connector->base.id, | |
362 | connector->name); | |
623369e5 DV |
363 | return -EINVAL; |
364 | } | |
365 | ||
415c3ac3 | 366 | if (!drm_encoder_crtc_ok(new_encoder, new_connector_state->crtc)) { |
6ac7c548 | 367 | DRM_DEBUG_ATOMIC("[ENCODER:%d:%s] incompatible with [CRTC:%d:%s]\n", |
5481c8fb DV |
368 | new_encoder->base.id, |
369 | new_encoder->name, | |
415c3ac3 ML |
370 | new_connector_state->crtc->base.id, |
371 | new_connector_state->crtc->name); | |
5481c8fb DV |
372 | return -EINVAL; |
373 | } | |
374 | ||
415c3ac3 ML |
375 | if (new_encoder == new_connector_state->best_encoder) { |
376 | set_best_encoder(state, new_connector_state, new_encoder); | |
e87a52b3 | 377 | |
fa3ab4c2 | 378 | DRM_DEBUG_ATOMIC("[CONNECTOR:%d:%s] keeps [ENCODER:%d:%s], now on [CRTC:%d:%s]\n", |
17a38d9c DV |
379 | connector->base.id, |
380 | connector->name, | |
381 | new_encoder->base.id, | |
382 | new_encoder->name, | |
415c3ac3 ML |
383 | new_connector_state->crtc->base.id, |
384 | new_connector_state->crtc->name); | |
623369e5 DV |
385 | |
386 | return 0; | |
387 | } | |
388 | ||
ec5aaa58 | 389 | steal_encoder(state, new_encoder); |
6ea76f3c | 390 | |
415c3ac3 | 391 | set_best_encoder(state, new_connector_state, new_encoder); |
e87a52b3 | 392 | |
fc596660 | 393 | crtc_state->connectors_changed = true; |
623369e5 | 394 | |
fa3ab4c2 | 395 | DRM_DEBUG_ATOMIC("[CONNECTOR:%d:%s] using [ENCODER:%d:%s] on [CRTC:%d:%s]\n", |
17a38d9c DV |
396 | connector->base.id, |
397 | connector->name, | |
398 | new_encoder->base.id, | |
399 | new_encoder->name, | |
415c3ac3 ML |
400 | new_connector_state->crtc->base.id, |
401 | new_connector_state->crtc->name); | |
623369e5 DV |
402 | |
403 | return 0; | |
404 | } | |
405 | ||
406 | static int | |
407 | mode_fixup(struct drm_atomic_state *state) | |
408 | { | |
df63b999 | 409 | struct drm_crtc *crtc; |
415c3ac3 | 410 | struct drm_crtc_state *new_crtc_state; |
df63b999 | 411 | struct drm_connector *connector; |
415c3ac3 | 412 | struct drm_connector_state *new_conn_state; |
623369e5 | 413 | int i; |
f9ad86e4 | 414 | int ret; |
623369e5 | 415 | |
415c3ac3 ML |
416 | for_each_new_crtc_in_state(state, crtc, new_crtc_state, i) { |
417 | if (!new_crtc_state->mode_changed && | |
418 | !new_crtc_state->connectors_changed) | |
623369e5 DV |
419 | continue; |
420 | ||
415c3ac3 | 421 | drm_mode_copy(&new_crtc_state->adjusted_mode, &new_crtc_state->mode); |
623369e5 DV |
422 | } |
423 | ||
415c3ac3 | 424 | for_each_new_connector_in_state(state, connector, new_conn_state, i) { |
b5ceff20 | 425 | const struct drm_encoder_helper_funcs *funcs; |
623369e5 DV |
426 | struct drm_encoder *encoder; |
427 | ||
415c3ac3 | 428 | WARN_ON(!!new_conn_state->best_encoder != !!new_conn_state->crtc); |
623369e5 | 429 | |
415c3ac3 | 430 | if (!new_conn_state->crtc || !new_conn_state->best_encoder) |
623369e5 DV |
431 | continue; |
432 | ||
415c3ac3 | 433 | new_crtc_state = |
b4d93679 | 434 | drm_atomic_get_new_crtc_state(state, new_conn_state->crtc); |
623369e5 DV |
435 | |
436 | /* | |
437 | * Each encoder has at most one connector (since we always steal | |
438 | * it away), so we won't call ->mode_fixup twice. | |
439 | */ | |
415c3ac3 | 440 | encoder = new_conn_state->best_encoder; |
623369e5 DV |
441 | funcs = encoder->helper_private; |
442 | ||
415c3ac3 ML |
443 | ret = drm_bridge_mode_fixup(encoder->bridge, &new_crtc_state->mode, |
444 | &new_crtc_state->adjusted_mode); | |
862e686c AT |
445 | if (!ret) { |
446 | DRM_DEBUG_ATOMIC("Bridge fixup failed\n"); | |
447 | return -EINVAL; | |
623369e5 DV |
448 | } |
449 | ||
2827635e | 450 | if (funcs && funcs->atomic_check) { |
415c3ac3 ML |
451 | ret = funcs->atomic_check(encoder, new_crtc_state, |
452 | new_conn_state); | |
4cd4df80 | 453 | if (ret) { |
17a38d9c DV |
454 | DRM_DEBUG_ATOMIC("[ENCODER:%d:%s] check failed\n", |
455 | encoder->base.id, encoder->name); | |
4cd4df80 TR |
456 | return ret; |
457 | } | |
2827635e | 458 | } else if (funcs && funcs->mode_fixup) { |
415c3ac3 ML |
459 | ret = funcs->mode_fixup(encoder, &new_crtc_state->mode, |
460 | &new_crtc_state->adjusted_mode); | |
4cd4df80 | 461 | if (!ret) { |
17a38d9c DV |
462 | DRM_DEBUG_ATOMIC("[ENCODER:%d:%s] fixup failed\n", |
463 | encoder->base.id, encoder->name); | |
4cd4df80 TR |
464 | return -EINVAL; |
465 | } | |
623369e5 DV |
466 | } |
467 | } | |
468 | ||
415c3ac3 | 469 | for_each_new_crtc_in_state(state, crtc, new_crtc_state, i) { |
b5ceff20 | 470 | const struct drm_crtc_helper_funcs *funcs; |
623369e5 | 471 | |
415c3ac3 | 472 | if (!new_crtc_state->enable) |
f55f1701 LY |
473 | continue; |
474 | ||
415c3ac3 ML |
475 | if (!new_crtc_state->mode_changed && |
476 | !new_crtc_state->connectors_changed) | |
623369e5 DV |
477 | continue; |
478 | ||
479 | funcs = crtc->helper_private; | |
840bfe95 ACO |
480 | if (!funcs->mode_fixup) |
481 | continue; | |
482 | ||
415c3ac3 ML |
483 | ret = funcs->mode_fixup(crtc, &new_crtc_state->mode, |
484 | &new_crtc_state->adjusted_mode); | |
623369e5 | 485 | if (!ret) { |
fa3ab4c2 VS |
486 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] fixup failed\n", |
487 | crtc->base.id, crtc->name); | |
623369e5 DV |
488 | return -EINVAL; |
489 | } | |
490 | } | |
491 | ||
492 | return 0; | |
493 | } | |
494 | ||
faf94a08 JA |
495 | static enum drm_mode_status mode_valid_path(struct drm_connector *connector, |
496 | struct drm_encoder *encoder, | |
497 | struct drm_crtc *crtc, | |
498 | struct drm_display_mode *mode) | |
499 | { | |
500 | enum drm_mode_status ret; | |
501 | ||
502 | ret = drm_encoder_mode_valid(encoder, mode); | |
503 | if (ret != MODE_OK) { | |
504 | DRM_DEBUG_ATOMIC("[ENCODER:%d:%s] mode_valid() failed\n", | |
505 | encoder->base.id, encoder->name); | |
506 | return ret; | |
507 | } | |
508 | ||
509 | ret = drm_bridge_mode_valid(encoder->bridge, mode); | |
510 | if (ret != MODE_OK) { | |
511 | DRM_DEBUG_ATOMIC("[BRIDGE] mode_valid() failed\n"); | |
512 | return ret; | |
513 | } | |
514 | ||
515 | ret = drm_crtc_mode_valid(crtc, mode); | |
516 | if (ret != MODE_OK) { | |
517 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] mode_valid() failed\n", | |
518 | crtc->base.id, crtc->name); | |
519 | return ret; | |
520 | } | |
521 | ||
522 | return ret; | |
523 | } | |
524 | ||
525 | static int | |
526 | mode_valid(struct drm_atomic_state *state) | |
527 | { | |
528 | struct drm_connector_state *conn_state; | |
529 | struct drm_connector *connector; | |
530 | int i; | |
531 | ||
532 | for_each_new_connector_in_state(state, connector, conn_state, i) { | |
533 | struct drm_encoder *encoder = conn_state->best_encoder; | |
534 | struct drm_crtc *crtc = conn_state->crtc; | |
535 | struct drm_crtc_state *crtc_state; | |
536 | enum drm_mode_status mode_status; | |
537 | struct drm_display_mode *mode; | |
538 | ||
539 | if (!crtc || !encoder) | |
540 | continue; | |
541 | ||
542 | crtc_state = drm_atomic_get_new_crtc_state(state, crtc); | |
543 | if (!crtc_state) | |
544 | continue; | |
545 | if (!crtc_state->mode_changed && !crtc_state->connectors_changed) | |
546 | continue; | |
547 | ||
548 | mode = &crtc_state->mode; | |
549 | ||
550 | mode_status = mode_valid_path(connector, encoder, crtc, mode); | |
551 | if (mode_status != MODE_OK) | |
552 | return -EINVAL; | |
553 | } | |
554 | ||
555 | return 0; | |
556 | } | |
557 | ||
d9b13620 | 558 | /** |
f98bd3ef | 559 | * drm_atomic_helper_check_modeset - validate state object for modeset changes |
d9b13620 DV |
560 | * @dev: DRM device |
561 | * @state: the driver state object | |
562 | * | |
563 | * Check the state object to see if the requested state is physically possible. | |
564 | * This does all the crtc and connector related computations for an atomic | |
ce09d766 ML |
565 | * update and adds any additional connectors needed for full modesets. It calls |
566 | * the various per-object callbacks in the follow order: | |
567 | * | |
568 | * 1. &drm_connector_helper_funcs.atomic_best_encoder for determining the new encoder. | |
569 | * 2. &drm_connector_helper_funcs.atomic_check to validate the connector state. | |
570 | * 3. If it's determined a modeset is needed then all connectors on the affected crtc | |
571 | * crtc are added and &drm_connector_helper_funcs.atomic_check is run on them. | |
faf94a08 JA |
572 | * 4. &drm_encoder_helper_funcs.mode_valid, &drm_bridge_funcs.mode_valid and |
573 | * &drm_crtc_helper_funcs.mode_valid are called on the affected components. | |
574 | * 5. &drm_bridge_funcs.mode_fixup is called on all encoder bridges. | |
575 | * 6. &drm_encoder_helper_funcs.atomic_check is called to validate any encoder state. | |
ce09d766 ML |
576 | * This function is only called when the encoder will be part of a configured crtc, |
577 | * it must not be used for implementing connector property validation. | |
578 | * If this function is NULL, &drm_atomic_encoder_helper_funcs.mode_fixup is called | |
579 | * instead. | |
faf94a08 | 580 | * 7. &drm_crtc_helper_funcs.mode_fixup is called last, to fix up the mode with crtc constraints. |
6806cdf9 DV |
581 | * |
582 | * &drm_crtc_state.mode_changed is set when the input mode is changed. | |
583 | * &drm_crtc_state.connectors_changed is set when a connector is added or | |
584 | * removed from the crtc. &drm_crtc_state.active_changed is set when | |
585 | * &drm_crtc_state.active changes, which is used for DPMS. | |
d807ed1c | 586 | * See also: drm_atomic_crtc_needs_modeset() |
d9b13620 DV |
587 | * |
588 | * IMPORTANT: | |
589 | * | |
6806cdf9 DV |
590 | * Drivers which set &drm_crtc_state.mode_changed (e.g. in their |
591 | * &drm_plane_helper_funcs.atomic_check hooks if a plane update can't be done | |
592 | * without a full modeset) _must_ call this function afterwards after that | |
593 | * change. It is permitted to call this function multiple times for the same | |
594 | * update, e.g. when the &drm_crtc_helper_funcs.atomic_check functions depend | |
595 | * upon the adjusted dotclock for fifo space allocation and watermark | |
596 | * computation. | |
d9b13620 | 597 | * |
c39032a8 | 598 | * RETURNS: |
d9b13620 DV |
599 | * Zero for success or -errno |
600 | */ | |
601 | int | |
934ce1c2 | 602 | drm_atomic_helper_check_modeset(struct drm_device *dev, |
623369e5 DV |
603 | struct drm_atomic_state *state) |
604 | { | |
623369e5 | 605 | struct drm_crtc *crtc; |
415c3ac3 | 606 | struct drm_crtc_state *old_crtc_state, *new_crtc_state; |
df63b999 | 607 | struct drm_connector *connector; |
415c3ac3 | 608 | struct drm_connector_state *old_connector_state, *new_connector_state; |
623369e5 | 609 | int i, ret; |
ce09d766 | 610 | unsigned connectors_mask = 0; |
623369e5 | 611 | |
415c3ac3 | 612 | for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) { |
970ece83 ML |
613 | bool has_connectors = |
614 | !!new_crtc_state->connector_mask; | |
615 | ||
869e188a DV |
616 | WARN_ON(!drm_modeset_is_locked(&crtc->mutex)); |
617 | ||
415c3ac3 | 618 | if (!drm_mode_equal(&old_crtc_state->mode, &new_crtc_state->mode)) { |
fa3ab4c2 VS |
619 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] mode changed\n", |
620 | crtc->base.id, crtc->name); | |
415c3ac3 | 621 | new_crtc_state->mode_changed = true; |
623369e5 DV |
622 | } |
623 | ||
415c3ac3 | 624 | if (old_crtc_state->enable != new_crtc_state->enable) { |
fa3ab4c2 VS |
625 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] enable changed\n", |
626 | crtc->base.id, crtc->name); | |
fc596660 ML |
627 | |
628 | /* | |
629 | * For clarity this assignment is done here, but | |
630 | * enable == 0 is only true when there are no | |
631 | * connectors and a NULL mode. | |
632 | * | |
633 | * The other way around is true as well. enable != 0 | |
634 | * iff connectors are attached and a mode is set. | |
635 | */ | |
415c3ac3 ML |
636 | new_crtc_state->mode_changed = true; |
637 | new_crtc_state->connectors_changed = true; | |
623369e5 | 638 | } |
24d6652c ML |
639 | |
640 | if (old_crtc_state->active != new_crtc_state->active) { | |
641 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] active changed\n", | |
642 | crtc->base.id, crtc->name); | |
643 | new_crtc_state->active_changed = true; | |
644 | } | |
970ece83 ML |
645 | |
646 | if (new_crtc_state->enable != has_connectors) { | |
647 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] enabled/connectors mismatch\n", | |
648 | crtc->base.id, crtc->name); | |
649 | ||
650 | return -EINVAL; | |
651 | } | |
623369e5 DV |
652 | } |
653 | ||
44596b8c | 654 | ret = handle_conflicting_encoders(state, false); |
8248b65d ML |
655 | if (ret) |
656 | return ret; | |
40616a26 | 657 | |
415c3ac3 | 658 | for_each_oldnew_connector_in_state(state, connector, old_connector_state, new_connector_state, i) { |
ce09d766 ML |
659 | const struct drm_connector_helper_funcs *funcs = connector->helper_private; |
660 | ||
869e188a DV |
661 | WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex)); |
662 | ||
623369e5 | 663 | /* |
d807ed1c BS |
664 | * This only sets crtc->connectors_changed for routing changes, |
665 | * drivers must set crtc->connectors_changed themselves when | |
666 | * connector properties need to be updated. | |
623369e5 | 667 | */ |
9459545b | 668 | ret = update_connector_routing(state, connector, |
415c3ac3 ML |
669 | old_connector_state, |
670 | new_connector_state); | |
623369e5 DV |
671 | if (ret) |
672 | return ret; | |
415c3ac3 | 673 | if (old_connector_state->crtc) { |
b4d93679 ML |
674 | new_crtc_state = drm_atomic_get_new_crtc_state(state, |
675 | old_connector_state->crtc); | |
415c3ac3 ML |
676 | if (old_connector_state->link_status != |
677 | new_connector_state->link_status) | |
678 | new_crtc_state->connectors_changed = true; | |
47e22ff1 RS |
679 | |
680 | if (old_connector_state->max_requested_bpc != | |
681 | new_connector_state->max_requested_bpc) | |
682 | new_crtc_state->connectors_changed = true; | |
40ee6fbe | 683 | } |
ce09d766 ML |
684 | |
685 | if (funcs->atomic_check) | |
686 | ret = funcs->atomic_check(connector, new_connector_state); | |
687 | if (ret) | |
688 | return ret; | |
689 | ||
ca52bea9 | 690 | connectors_mask |= BIT(i); |
623369e5 DV |
691 | } |
692 | ||
693 | /* | |
694 | * After all the routing has been prepared we need to add in any | |
1e55a53a | 695 | * connector which is itself unchanged, but whose crtc changes its |
623369e5 DV |
696 | * configuration. This must be done before calling mode_fixup in case a |
697 | * crtc only changed its mode but has the same set of connectors. | |
698 | */ | |
415c3ac3 | 699 | for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) { |
415c3ac3 | 700 | if (!drm_atomic_crtc_needs_modeset(new_crtc_state)) |
623369e5 DV |
701 | continue; |
702 | ||
fa3ab4c2 VS |
703 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] needs all connectors, enable: %c, active: %c\n", |
704 | crtc->base.id, crtc->name, | |
415c3ac3 ML |
705 | new_crtc_state->enable ? 'y' : 'n', |
706 | new_crtc_state->active ? 'y' : 'n'); | |
623369e5 DV |
707 | |
708 | ret = drm_atomic_add_affected_connectors(state, crtc); | |
709 | if (ret != 0) | |
710 | return ret; | |
711 | ||
57744aa7 ML |
712 | ret = drm_atomic_add_affected_planes(state, crtc); |
713 | if (ret != 0) | |
714 | return ret; | |
623369e5 DV |
715 | } |
716 | ||
ce09d766 ML |
717 | /* |
718 | * Iterate over all connectors again, to make sure atomic_check() | |
719 | * has been called on them when a modeset is forced. | |
720 | */ | |
721 | for_each_oldnew_connector_in_state(state, connector, old_connector_state, new_connector_state, i) { | |
722 | const struct drm_connector_helper_funcs *funcs = connector->helper_private; | |
723 | ||
724 | if (connectors_mask & BIT(i)) | |
725 | continue; | |
726 | ||
727 | if (funcs->atomic_check) | |
728 | ret = funcs->atomic_check(connector, new_connector_state); | |
729 | if (ret) | |
730 | return ret; | |
731 | } | |
732 | ||
faf94a08 JA |
733 | ret = mode_valid(state); |
734 | if (ret) | |
735 | return ret; | |
736 | ||
623369e5 DV |
737 | return mode_fixup(state); |
738 | } | |
d9b13620 | 739 | EXPORT_SYMBOL(drm_atomic_helper_check_modeset); |
623369e5 | 740 | |
a01cb8ba VS |
741 | /** |
742 | * drm_atomic_helper_check_plane_state() - Check plane state for validity | |
743 | * @plane_state: plane state to check | |
744 | * @crtc_state: crtc state to check | |
a01cb8ba VS |
745 | * @min_scale: minimum @src:@dest scaling factor in 16.16 fixed point |
746 | * @max_scale: maximum @src:@dest scaling factor in 16.16 fixed point | |
747 | * @can_position: is it legal to position the plane such that it | |
748 | * doesn't cover the entire crtc? This will generally | |
749 | * only be false for primary planes. | |
750 | * @can_update_disabled: can the plane be updated while the crtc | |
751 | * is disabled? | |
752 | * | |
753 | * Checks that a desired plane update is valid, and updates various | |
754 | * bits of derived state (clipped coordinates etc.). Drivers that provide | |
755 | * their own plane handling rather than helper-provided implementations may | |
756 | * still wish to call this function to avoid duplication of error checking | |
757 | * code. | |
758 | * | |
759 | * RETURNS: | |
760 | * Zero if update appears valid, error code on failure | |
761 | */ | |
762 | int drm_atomic_helper_check_plane_state(struct drm_plane_state *plane_state, | |
763 | const struct drm_crtc_state *crtc_state, | |
a01cb8ba VS |
764 | int min_scale, |
765 | int max_scale, | |
766 | bool can_position, | |
767 | bool can_update_disabled) | |
768 | { | |
769 | struct drm_framebuffer *fb = plane_state->fb; | |
770 | struct drm_rect *src = &plane_state->src; | |
771 | struct drm_rect *dst = &plane_state->dst; | |
772 | unsigned int rotation = plane_state->rotation; | |
81af63a4 | 773 | struct drm_rect clip = {}; |
a01cb8ba VS |
774 | int hscale, vscale; |
775 | ||
776 | WARN_ON(plane_state->crtc && plane_state->crtc != crtc_state->crtc); | |
777 | ||
778 | *src = drm_plane_state_src(plane_state); | |
779 | *dst = drm_plane_state_dest(plane_state); | |
780 | ||
781 | if (!fb) { | |
782 | plane_state->visible = false; | |
783 | return 0; | |
784 | } | |
785 | ||
786 | /* crtc should only be NULL when disabling (i.e., !fb) */ | |
787 | if (WARN_ON(!plane_state->crtc)) { | |
788 | plane_state->visible = false; | |
789 | return 0; | |
790 | } | |
791 | ||
792 | if (!crtc_state->enable && !can_update_disabled) { | |
793 | DRM_DEBUG_KMS("Cannot update plane of a disabled CRTC.\n"); | |
794 | return -EINVAL; | |
795 | } | |
796 | ||
797 | drm_rect_rotate(src, fb->width << 16, fb->height << 16, rotation); | |
798 | ||
799 | /* Check scaling */ | |
800 | hscale = drm_rect_calc_hscale(src, dst, min_scale, max_scale); | |
801 | vscale = drm_rect_calc_vscale(src, dst, min_scale, max_scale); | |
802 | if (hscale < 0 || vscale < 0) { | |
803 | DRM_DEBUG_KMS("Invalid scaling of plane\n"); | |
804 | drm_rect_debug_print("src: ", &plane_state->src, true); | |
805 | drm_rect_debug_print("dst: ", &plane_state->dst, false); | |
806 | return -ERANGE; | |
807 | } | |
808 | ||
81af63a4 VS |
809 | if (crtc_state->enable) |
810 | drm_mode_get_hv_timing(&crtc_state->mode, &clip.x2, &clip.y2); | |
811 | ||
f96bdf56 | 812 | plane_state->visible = drm_rect_clip_scaled(src, dst, &clip); |
a01cb8ba VS |
813 | |
814 | drm_rect_rotate_inv(src, fb->width << 16, fb->height << 16, rotation); | |
815 | ||
816 | if (!plane_state->visible) | |
817 | /* | |
818 | * Plane isn't visible; some drivers can handle this | |
819 | * so we just return success here. Drivers that can't | |
820 | * (including those that use the primary plane helper's | |
821 | * update function) will return an error from their | |
822 | * update_plane handler. | |
823 | */ | |
824 | return 0; | |
825 | ||
81af63a4 | 826 | if (!can_position && !drm_rect_equals(dst, &clip)) { |
a01cb8ba VS |
827 | DRM_DEBUG_KMS("Plane must cover entire CRTC\n"); |
828 | drm_rect_debug_print("dst: ", dst, false); | |
81af63a4 | 829 | drm_rect_debug_print("clip: ", &clip, false); |
a01cb8ba VS |
830 | return -EINVAL; |
831 | } | |
832 | ||
833 | return 0; | |
834 | } | |
835 | EXPORT_SYMBOL(drm_atomic_helper_check_plane_state); | |
836 | ||
c2fcd274 | 837 | /** |
f98bd3ef | 838 | * drm_atomic_helper_check_planes - validate state object for planes changes |
c2fcd274 DV |
839 | * @dev: DRM device |
840 | * @state: the driver state object | |
841 | * | |
842 | * Check the state object to see if the requested state is physically possible. | |
d9b13620 | 843 | * This does all the plane update related checks using by calling into the |
6806cdf9 DV |
844 | * &drm_crtc_helper_funcs.atomic_check and &drm_plane_helper_funcs.atomic_check |
845 | * hooks provided by the driver. | |
c2fcd274 | 846 | * |
6806cdf9 | 847 | * It also sets &drm_crtc_state.planes_changed to indicate that a crtc has |
fc596660 ML |
848 | * updated planes. |
849 | * | |
c39032a8 | 850 | * RETURNS: |
c2fcd274 DV |
851 | * Zero for success or -errno |
852 | */ | |
d9b13620 DV |
853 | int |
854 | drm_atomic_helper_check_planes(struct drm_device *dev, | |
855 | struct drm_atomic_state *state) | |
c2fcd274 | 856 | { |
df63b999 | 857 | struct drm_crtc *crtc; |
415c3ac3 | 858 | struct drm_crtc_state *new_crtc_state; |
df63b999 | 859 | struct drm_plane *plane; |
415c3ac3 | 860 | struct drm_plane_state *new_plane_state, *old_plane_state; |
c2fcd274 DV |
861 | int i, ret = 0; |
862 | ||
415c3ac3 | 863 | for_each_oldnew_plane_in_state(state, plane, old_plane_state, new_plane_state, i) { |
b5ceff20 | 864 | const struct drm_plane_helper_funcs *funcs; |
c2fcd274 | 865 | |
869e188a DV |
866 | WARN_ON(!drm_modeset_is_locked(&plane->mutex)); |
867 | ||
c2fcd274 DV |
868 | funcs = plane->helper_private; |
869 | ||
415c3ac3 | 870 | drm_atomic_helper_plane_changed(state, old_plane_state, new_plane_state, plane); |
c2fcd274 | 871 | |
d9778b40 DR |
872 | drm_atomic_helper_check_plane_damage(state, new_plane_state); |
873 | ||
c2fcd274 DV |
874 | if (!funcs || !funcs->atomic_check) |
875 | continue; | |
876 | ||
415c3ac3 | 877 | ret = funcs->atomic_check(plane, new_plane_state); |
c2fcd274 | 878 | if (ret) { |
9f4c97a2 VS |
879 | DRM_DEBUG_ATOMIC("[PLANE:%d:%s] atomic driver check failed\n", |
880 | plane->base.id, plane->name); | |
c2fcd274 DV |
881 | return ret; |
882 | } | |
883 | } | |
884 | ||
415c3ac3 | 885 | for_each_new_crtc_in_state(state, crtc, new_crtc_state, i) { |
b5ceff20 | 886 | const struct drm_crtc_helper_funcs *funcs; |
c2fcd274 DV |
887 | |
888 | funcs = crtc->helper_private; | |
889 | ||
890 | if (!funcs || !funcs->atomic_check) | |
891 | continue; | |
892 | ||
415c3ac3 | 893 | ret = funcs->atomic_check(crtc, new_crtc_state); |
c2fcd274 | 894 | if (ret) { |
fa3ab4c2 VS |
895 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] atomic driver check failed\n", |
896 | crtc->base.id, crtc->name); | |
c2fcd274 DV |
897 | return ret; |
898 | } | |
899 | } | |
900 | ||
d9b13620 DV |
901 | return ret; |
902 | } | |
903 | EXPORT_SYMBOL(drm_atomic_helper_check_planes); | |
904 | ||
905 | /** | |
906 | * drm_atomic_helper_check - validate state object | |
907 | * @dev: DRM device | |
908 | * @state: the driver state object | |
909 | * | |
910 | * Check the state object to see if the requested state is physically possible. | |
911 | * Only crtcs and planes have check callbacks, so for any additional (global) | |
912 | * checking that a driver needs it can simply wrap that around this function. | |
6806cdf9 DV |
913 | * Drivers without such needs can directly use this as their |
914 | * &drm_mode_config_funcs.atomic_check callback. | |
d9b13620 | 915 | * |
b4274fbe DV |
916 | * This just wraps the two parts of the state checking for planes and modeset |
917 | * state in the default order: First it calls drm_atomic_helper_check_modeset() | |
918 | * and then drm_atomic_helper_check_planes(). The assumption is that the | |
6806cdf9 DV |
919 | * @drm_plane_helper_funcs.atomic_check and @drm_crtc_helper_funcs.atomic_check |
920 | * functions depend upon an updated adjusted_mode.clock to e.g. properly compute | |
921 | * watermarks. | |
b4274fbe | 922 | * |
49efffc7 PU |
923 | * Note that zpos normalization will add all enable planes to the state which |
924 | * might not desired for some drivers. | |
925 | * For example enable/disable of a cursor plane which have fixed zpos value | |
926 | * would trigger all other enabled planes to be forced to the state change. | |
927 | * | |
c39032a8 | 928 | * RETURNS: |
d9b13620 DV |
929 | * Zero for success or -errno |
930 | */ | |
931 | int drm_atomic_helper_check(struct drm_device *dev, | |
932 | struct drm_atomic_state *state) | |
933 | { | |
934 | int ret; | |
935 | ||
b4274fbe | 936 | ret = drm_atomic_helper_check_modeset(dev, state); |
d9b13620 DV |
937 | if (ret) |
938 | return ret; | |
939 | ||
49efffc7 PU |
940 | if (dev->mode_config.normalize_zpos) { |
941 | ret = drm_atomic_normalize_zpos(dev, state); | |
942 | if (ret) | |
943 | return ret; | |
944 | } | |
945 | ||
b4274fbe | 946 | ret = drm_atomic_helper_check_planes(dev, state); |
934ce1c2 RC |
947 | if (ret) |
948 | return ret; | |
949 | ||
fef9df8b GP |
950 | if (state->legacy_cursor_update) |
951 | state->async_update = !drm_atomic_helper_async_check(dev, state); | |
952 | ||
c2fcd274 DV |
953 | return ret; |
954 | } | |
955 | EXPORT_SYMBOL(drm_atomic_helper_check); | |
956 | ||
623369e5 DV |
957 | static void |
958 | disable_outputs(struct drm_device *dev, struct drm_atomic_state *old_state) | |
959 | { | |
df63b999 | 960 | struct drm_connector *connector; |
415c3ac3 | 961 | struct drm_connector_state *old_conn_state, *new_conn_state; |
df63b999 | 962 | struct drm_crtc *crtc; |
415c3ac3 | 963 | struct drm_crtc_state *old_crtc_state, *new_crtc_state; |
623369e5 DV |
964 | int i; |
965 | ||
415c3ac3 | 966 | for_each_oldnew_connector_in_state(old_state, connector, old_conn_state, new_conn_state, i) { |
b5ceff20 | 967 | const struct drm_encoder_helper_funcs *funcs; |
623369e5 DV |
968 | struct drm_encoder *encoder; |
969 | ||
623369e5 DV |
970 | /* Shut down everything that's in the changeset and currently |
971 | * still on. So need to check the old, saved state. */ | |
df63b999 | 972 | if (!old_conn_state->crtc) |
623369e5 DV |
973 | continue; |
974 | ||
b4d93679 | 975 | old_crtc_state = drm_atomic_get_old_crtc_state(old_state, old_conn_state->crtc); |
eab3bbef | 976 | |
4218a32f | 977 | if (!old_crtc_state->active || |
2465ff62 | 978 | !drm_atomic_crtc_needs_modeset(old_conn_state->crtc->state)) |
eab3bbef DV |
979 | continue; |
980 | ||
46df9adb | 981 | encoder = old_conn_state->best_encoder; |
623369e5 | 982 | |
46df9adb RC |
983 | /* We shouldn't get this far if we didn't previously have |
984 | * an encoder.. but WARN_ON() rather than explode. | |
985 | */ | |
986 | if (WARN_ON(!encoder)) | |
623369e5 DV |
987 | continue; |
988 | ||
989 | funcs = encoder->helper_private; | |
990 | ||
17a38d9c DV |
991 | DRM_DEBUG_ATOMIC("disabling [ENCODER:%d:%s]\n", |
992 | encoder->base.id, encoder->name); | |
95d6eb3b | 993 | |
623369e5 DV |
994 | /* |
995 | * Each encoder has at most one connector (since we always steal | |
f98bd3ef | 996 | * it away), so we won't call disable hooks twice. |
623369e5 | 997 | */ |
862e686c | 998 | drm_bridge_disable(encoder->bridge); |
623369e5 DV |
999 | |
1000 | /* Right function depends upon target state. */ | |
2827635e | 1001 | if (funcs) { |
415c3ac3 | 1002 | if (new_conn_state->crtc && funcs->prepare) |
2827635e NT |
1003 | funcs->prepare(encoder); |
1004 | else if (funcs->disable) | |
1005 | funcs->disable(encoder); | |
1006 | else if (funcs->dpms) | |
1007 | funcs->dpms(encoder, DRM_MODE_DPMS_OFF); | |
1008 | } | |
623369e5 | 1009 | |
862e686c | 1010 | drm_bridge_post_disable(encoder->bridge); |
623369e5 DV |
1011 | } |
1012 | ||
415c3ac3 | 1013 | for_each_oldnew_crtc_in_state(old_state, crtc, old_crtc_state, new_crtc_state, i) { |
b5ceff20 | 1014 | const struct drm_crtc_helper_funcs *funcs; |
84014b0a | 1015 | int ret; |
623369e5 DV |
1016 | |
1017 | /* Shut down everything that needs a full modeset. */ | |
415c3ac3 | 1018 | if (!drm_atomic_crtc_needs_modeset(new_crtc_state)) |
eab3bbef DV |
1019 | continue; |
1020 | ||
1021 | if (!old_crtc_state->active) | |
623369e5 DV |
1022 | continue; |
1023 | ||
1024 | funcs = crtc->helper_private; | |
1025 | ||
fa3ab4c2 VS |
1026 | DRM_DEBUG_ATOMIC("disabling [CRTC:%d:%s]\n", |
1027 | crtc->base.id, crtc->name); | |
95d6eb3b DV |
1028 | |
1029 | ||
623369e5 | 1030 | /* Right function depends upon target state. */ |
415c3ac3 | 1031 | if (new_crtc_state->enable && funcs->prepare) |
623369e5 | 1032 | funcs->prepare(crtc); |
c9ac8b4c LY |
1033 | else if (funcs->atomic_disable) |
1034 | funcs->atomic_disable(crtc, old_crtc_state); | |
623369e5 DV |
1035 | else if (funcs->disable) |
1036 | funcs->disable(crtc); | |
1037 | else | |
1038 | funcs->dpms(crtc, DRM_MODE_DPMS_OFF); | |
84014b0a DV |
1039 | |
1040 | if (!(dev->irq_enabled && dev->num_crtcs)) | |
1041 | continue; | |
1042 | ||
1043 | ret = drm_crtc_vblank_get(crtc); | |
1044 | WARN_ONCE(ret != -EINVAL, "driver forgot to call drm_crtc_vblank_off()\n"); | |
1045 | if (ret == 0) | |
1046 | drm_crtc_vblank_put(crtc); | |
623369e5 DV |
1047 | } |
1048 | } | |
1049 | ||
4c18d301 DV |
1050 | /** |
1051 | * drm_atomic_helper_update_legacy_modeset_state - update legacy modeset state | |
1052 | * @dev: DRM device | |
1053 | * @old_state: atomic state object with old state structures | |
1054 | * | |
1055 | * This function updates all the various legacy modeset state pointers in | |
1056 | * connectors, encoders and crtcs. It also updates the timestamping constants | |
1057 | * used for precise vblank timestamps by calling | |
1058 | * drm_calc_timestamping_constants(). | |
1059 | * | |
1060 | * Drivers can use this for building their own atomic commit if they don't have | |
1061 | * a pure helper-based modeset implementation. | |
2e2b96ef DV |
1062 | * |
1063 | * Since these updates are not synchronized with lockings, only code paths | |
1064 | * called from &drm_mode_config_helper_funcs.atomic_commit_tail can look at the | |
1065 | * legacy state filled out by this helper. Defacto this means this helper and | |
1066 | * the legacy state pointers are only really useful for transitioning an | |
1067 | * existing driver to the atomic world. | |
4c18d301 DV |
1068 | */ |
1069 | void | |
1070 | drm_atomic_helper_update_legacy_modeset_state(struct drm_device *dev, | |
1071 | struct drm_atomic_state *old_state) | |
623369e5 | 1072 | { |
df63b999 | 1073 | struct drm_connector *connector; |
415c3ac3 | 1074 | struct drm_connector_state *old_conn_state, *new_conn_state; |
df63b999 | 1075 | struct drm_crtc *crtc; |
415c3ac3 | 1076 | struct drm_crtc_state *new_crtc_state; |
623369e5 DV |
1077 | int i; |
1078 | ||
8c10342c | 1079 | /* clear out existing links and update dpms */ |
415c3ac3 | 1080 | for_each_oldnew_connector_in_state(old_state, connector, old_conn_state, new_conn_state, i) { |
8c10342c ML |
1081 | if (connector->encoder) { |
1082 | WARN_ON(!connector->encoder->crtc); | |
1083 | ||
1084 | connector->encoder->crtc = NULL; | |
1085 | connector->encoder = NULL; | |
1086 | } | |
623369e5 | 1087 | |
415c3ac3 | 1088 | crtc = new_conn_state->crtc; |
8c10342c ML |
1089 | if ((!crtc && old_conn_state->crtc) || |
1090 | (crtc && drm_atomic_crtc_needs_modeset(crtc->state))) { | |
8c10342c | 1091 | int mode = DRM_MODE_DPMS_OFF; |
623369e5 | 1092 | |
8c10342c ML |
1093 | if (crtc && crtc->state->active) |
1094 | mode = DRM_MODE_DPMS_ON; | |
1095 | ||
1096 | connector->dpms = mode; | |
8c10342c | 1097 | } |
623369e5 DV |
1098 | } |
1099 | ||
1100 | /* set new links */ | |
415c3ac3 ML |
1101 | for_each_new_connector_in_state(old_state, connector, new_conn_state, i) { |
1102 | if (!new_conn_state->crtc) | |
623369e5 DV |
1103 | continue; |
1104 | ||
415c3ac3 | 1105 | if (WARN_ON(!new_conn_state->best_encoder)) |
623369e5 DV |
1106 | continue; |
1107 | ||
415c3ac3 ML |
1108 | connector->encoder = new_conn_state->best_encoder; |
1109 | connector->encoder->crtc = new_conn_state->crtc; | |
623369e5 DV |
1110 | } |
1111 | ||
1112 | /* set legacy state in the crtc structure */ | |
415c3ac3 | 1113 | for_each_new_crtc_in_state(old_state, crtc, new_crtc_state, i) { |
2660801f | 1114 | struct drm_plane *primary = crtc->primary; |
b4d93679 | 1115 | struct drm_plane_state *new_plane_state; |
2660801f | 1116 | |
415c3ac3 ML |
1117 | crtc->mode = new_crtc_state->mode; |
1118 | crtc->enabled = new_crtc_state->enable; | |
2660801f | 1119 | |
b4d93679 ML |
1120 | new_plane_state = |
1121 | drm_atomic_get_new_plane_state(old_state, primary); | |
1122 | ||
1123 | if (new_plane_state && new_plane_state->crtc == crtc) { | |
1124 | crtc->x = new_plane_state->src_x >> 16; | |
1125 | crtc->y = new_plane_state->src_y >> 16; | |
2660801f | 1126 | } |
3d51d2d2 | 1127 | |
415c3ac3 | 1128 | if (new_crtc_state->enable) |
3d51d2d2 | 1129 | drm_calc_timestamping_constants(crtc, |
415c3ac3 | 1130 | &new_crtc_state->adjusted_mode); |
623369e5 DV |
1131 | } |
1132 | } | |
4c18d301 | 1133 | EXPORT_SYMBOL(drm_atomic_helper_update_legacy_modeset_state); |
623369e5 DV |
1134 | |
1135 | static void | |
1136 | crtc_set_mode(struct drm_device *dev, struct drm_atomic_state *old_state) | |
1137 | { | |
df63b999 | 1138 | struct drm_crtc *crtc; |
415c3ac3 | 1139 | struct drm_crtc_state *new_crtc_state; |
df63b999 | 1140 | struct drm_connector *connector; |
415c3ac3 | 1141 | struct drm_connector_state *new_conn_state; |
623369e5 DV |
1142 | int i; |
1143 | ||
415c3ac3 | 1144 | for_each_new_crtc_in_state(old_state, crtc, new_crtc_state, i) { |
b5ceff20 | 1145 | const struct drm_crtc_helper_funcs *funcs; |
623369e5 | 1146 | |
415c3ac3 | 1147 | if (!new_crtc_state->mode_changed) |
623369e5 DV |
1148 | continue; |
1149 | ||
1150 | funcs = crtc->helper_private; | |
1151 | ||
415c3ac3 | 1152 | if (new_crtc_state->enable && funcs->mode_set_nofb) { |
fa3ab4c2 VS |
1153 | DRM_DEBUG_ATOMIC("modeset on [CRTC:%d:%s]\n", |
1154 | crtc->base.id, crtc->name); | |
95d6eb3b | 1155 | |
623369e5 | 1156 | funcs->mode_set_nofb(crtc); |
95d6eb3b | 1157 | } |
623369e5 DV |
1158 | } |
1159 | ||
415c3ac3 | 1160 | for_each_new_connector_in_state(old_state, connector, new_conn_state, i) { |
b5ceff20 | 1161 | const struct drm_encoder_helper_funcs *funcs; |
623369e5 DV |
1162 | struct drm_encoder *encoder; |
1163 | struct drm_display_mode *mode, *adjusted_mode; | |
1164 | ||
415c3ac3 | 1165 | if (!new_conn_state->best_encoder) |
623369e5 DV |
1166 | continue; |
1167 | ||
415c3ac3 | 1168 | encoder = new_conn_state->best_encoder; |
623369e5 | 1169 | funcs = encoder->helper_private; |
415c3ac3 | 1170 | new_crtc_state = new_conn_state->crtc->state; |
623369e5 DV |
1171 | mode = &new_crtc_state->mode; |
1172 | adjusted_mode = &new_crtc_state->adjusted_mode; | |
1173 | ||
eab3bbef DV |
1174 | if (!new_crtc_state->mode_changed) |
1175 | continue; | |
1176 | ||
17a38d9c DV |
1177 | DRM_DEBUG_ATOMIC("modeset on [ENCODER:%d:%s]\n", |
1178 | encoder->base.id, encoder->name); | |
95d6eb3b | 1179 | |
623369e5 DV |
1180 | /* |
1181 | * Each encoder has at most one connector (since we always steal | |
f98bd3ef | 1182 | * it away), so we won't call mode_set hooks twice. |
623369e5 | 1183 | */ |
fe4a11c9 PZ |
1184 | if (funcs && funcs->atomic_mode_set) { |
1185 | funcs->atomic_mode_set(encoder, new_crtc_state, | |
415c3ac3 | 1186 | new_conn_state); |
fe4a11c9 | 1187 | } else if (funcs && funcs->mode_set) { |
c982bd90 | 1188 | funcs->mode_set(encoder, mode, adjusted_mode); |
fe4a11c9 | 1189 | } |
623369e5 | 1190 | |
862e686c | 1191 | drm_bridge_mode_set(encoder->bridge, mode, adjusted_mode); |
623369e5 DV |
1192 | } |
1193 | } | |
1194 | ||
1195 | /** | |
1af434a9 | 1196 | * drm_atomic_helper_commit_modeset_disables - modeset commit to disable outputs |
623369e5 | 1197 | * @dev: DRM device |
a072f809 | 1198 | * @old_state: atomic state object with old state structures |
623369e5 | 1199 | * |
1af434a9 | 1200 | * This function shuts down all the outputs that need to be shut down and |
623369e5 | 1201 | * prepares them (if required) with the new mode. |
1af434a9 | 1202 | * |
60acc4eb | 1203 | * For compatibility with legacy crtc helpers this should be called before |
1af434a9 DV |
1204 | * drm_atomic_helper_commit_planes(), which is what the default commit function |
1205 | * does. But drivers with different needs can group the modeset commits together | |
1206 | * and do the plane commits at the end. This is useful for drivers doing runtime | |
1207 | * PM since planes updates then only happen when the CRTC is actually enabled. | |
623369e5 | 1208 | */ |
1af434a9 DV |
1209 | void drm_atomic_helper_commit_modeset_disables(struct drm_device *dev, |
1210 | struct drm_atomic_state *old_state) | |
623369e5 | 1211 | { |
a072f809 | 1212 | disable_outputs(dev, old_state); |
4c18d301 DV |
1213 | |
1214 | drm_atomic_helper_update_legacy_modeset_state(dev, old_state); | |
1215 | ||
a072f809 | 1216 | crtc_set_mode(dev, old_state); |
623369e5 | 1217 | } |
1af434a9 | 1218 | EXPORT_SYMBOL(drm_atomic_helper_commit_modeset_disables); |
623369e5 | 1219 | |
935774cd BS |
1220 | static void drm_atomic_helper_commit_writebacks(struct drm_device *dev, |
1221 | struct drm_atomic_state *old_state) | |
1222 | { | |
1223 | struct drm_connector *connector; | |
1224 | struct drm_connector_state *new_conn_state; | |
1225 | int i; | |
1226 | ||
1227 | for_each_new_connector_in_state(old_state, connector, new_conn_state, i) { | |
1228 | const struct drm_connector_helper_funcs *funcs; | |
1229 | ||
1230 | funcs = connector->helper_private; | |
814bde99 BB |
1231 | if (!funcs->atomic_commit) |
1232 | continue; | |
935774cd BS |
1233 | |
1234 | if (new_conn_state->writeback_job && new_conn_state->writeback_job->fb) { | |
1235 | WARN_ON(connector->connector_type != DRM_MODE_CONNECTOR_WRITEBACK); | |
425132fd | 1236 | funcs->atomic_commit(connector, new_conn_state); |
935774cd BS |
1237 | } |
1238 | } | |
1239 | } | |
1240 | ||
623369e5 | 1241 | /** |
1af434a9 | 1242 | * drm_atomic_helper_commit_modeset_enables - modeset commit to enable outputs |
623369e5 DV |
1243 | * @dev: DRM device |
1244 | * @old_state: atomic state object with old state structures | |
1245 | * | |
1af434a9 DV |
1246 | * This function enables all the outputs with the new configuration which had to |
1247 | * be turned off for the update. | |
1248 | * | |
60acc4eb | 1249 | * For compatibility with legacy crtc helpers this should be called after |
1af434a9 DV |
1250 | * drm_atomic_helper_commit_planes(), which is what the default commit function |
1251 | * does. But drivers with different needs can group the modeset commits together | |
1252 | * and do the plane commits at the end. This is useful for drivers doing runtime | |
1253 | * PM since planes updates then only happen when the CRTC is actually enabled. | |
623369e5 | 1254 | */ |
1af434a9 DV |
1255 | void drm_atomic_helper_commit_modeset_enables(struct drm_device *dev, |
1256 | struct drm_atomic_state *old_state) | |
623369e5 | 1257 | { |
df63b999 | 1258 | struct drm_crtc *crtc; |
0b20a0f8 | 1259 | struct drm_crtc_state *old_crtc_state; |
415c3ac3 | 1260 | struct drm_crtc_state *new_crtc_state; |
df63b999 | 1261 | struct drm_connector *connector; |
415c3ac3 | 1262 | struct drm_connector_state *new_conn_state; |
623369e5 DV |
1263 | int i; |
1264 | ||
0b20a0f8 | 1265 | for_each_oldnew_crtc_in_state(old_state, crtc, old_crtc_state, new_crtc_state, i) { |
b5ceff20 | 1266 | const struct drm_crtc_helper_funcs *funcs; |
623369e5 DV |
1267 | |
1268 | /* Need to filter out CRTCs where only planes change. */ | |
415c3ac3 | 1269 | if (!drm_atomic_crtc_needs_modeset(new_crtc_state)) |
eab3bbef DV |
1270 | continue; |
1271 | ||
415c3ac3 | 1272 | if (!new_crtc_state->active) |
623369e5 DV |
1273 | continue; |
1274 | ||
1275 | funcs = crtc->helper_private; | |
1276 | ||
415c3ac3 | 1277 | if (new_crtc_state->enable) { |
fa3ab4c2 VS |
1278 | DRM_DEBUG_ATOMIC("enabling [CRTC:%d:%s]\n", |
1279 | crtc->base.id, crtc->name); | |
95d6eb3b | 1280 | |
0b20a0f8 LP |
1281 | if (funcs->atomic_enable) |
1282 | funcs->atomic_enable(crtc, old_crtc_state); | |
ee0a89cf DV |
1283 | else |
1284 | funcs->commit(crtc); | |
1285 | } | |
623369e5 DV |
1286 | } |
1287 | ||
415c3ac3 | 1288 | for_each_new_connector_in_state(old_state, connector, new_conn_state, i) { |
b5ceff20 | 1289 | const struct drm_encoder_helper_funcs *funcs; |
623369e5 DV |
1290 | struct drm_encoder *encoder; |
1291 | ||
415c3ac3 | 1292 | if (!new_conn_state->best_encoder) |
623369e5 DV |
1293 | continue; |
1294 | ||
415c3ac3 ML |
1295 | if (!new_conn_state->crtc->state->active || |
1296 | !drm_atomic_crtc_needs_modeset(new_conn_state->crtc->state)) | |
eab3bbef DV |
1297 | continue; |
1298 | ||
415c3ac3 | 1299 | encoder = new_conn_state->best_encoder; |
623369e5 DV |
1300 | funcs = encoder->helper_private; |
1301 | ||
17a38d9c DV |
1302 | DRM_DEBUG_ATOMIC("enabling [ENCODER:%d:%s]\n", |
1303 | encoder->base.id, encoder->name); | |
95d6eb3b | 1304 | |
623369e5 DV |
1305 | /* |
1306 | * Each encoder has at most one connector (since we always steal | |
f98bd3ef | 1307 | * it away), so we won't call enable hooks twice. |
623369e5 | 1308 | */ |
862e686c | 1309 | drm_bridge_pre_enable(encoder->bridge); |
623369e5 | 1310 | |
2827635e NT |
1311 | if (funcs) { |
1312 | if (funcs->enable) | |
1313 | funcs->enable(encoder); | |
1314 | else if (funcs->commit) | |
1315 | funcs->commit(encoder); | |
1316 | } | |
623369e5 | 1317 | |
862e686c | 1318 | drm_bridge_enable(encoder->bridge); |
623369e5 | 1319 | } |
935774cd BS |
1320 | |
1321 | drm_atomic_helper_commit_writebacks(dev, old_state); | |
623369e5 | 1322 | } |
1af434a9 | 1323 | EXPORT_SYMBOL(drm_atomic_helper_commit_modeset_enables); |
623369e5 | 1324 | |
4c5b7f3a RC |
1325 | /** |
1326 | * drm_atomic_helper_wait_for_fences - wait for fences stashed in plane state | |
1327 | * @dev: DRM device | |
1328 | * @state: atomic state object with old state structures | |
1ea0c02e DV |
1329 | * @pre_swap: If true, do an interruptible wait, and @state is the new state. |
1330 | * Otherwise @state is the old state. | |
4c5b7f3a RC |
1331 | * |
1332 | * For implicit sync, driver should fish the exclusive fence out from the | |
1333 | * incoming fb's and stash it in the drm_plane_state. This is called after | |
1334 | * drm_atomic_helper_swap_state() so it uses the current plane state (and | |
1335 | * just uses the atomic state to find the changed planes) | |
f6ce410a | 1336 | * |
1ea0c02e DV |
1337 | * Note that @pre_swap is needed since the point where we block for fences moves |
1338 | * around depending upon whether an atomic commit is blocking or | |
42590372 GP |
1339 | * non-blocking. For non-blocking commit all waiting needs to happen after |
1340 | * drm_atomic_helper_swap_state() is called, but for blocking commits we want | |
1ea0c02e DV |
1341 | * to wait **before** we do anything that can't be easily rolled back. That is |
1342 | * before we call drm_atomic_helper_swap_state(). | |
1343 | * | |
f54d1867 | 1344 | * Returns zero if success or < 0 if dma_fence_wait() fails. |
4c5b7f3a | 1345 | */ |
f6ce410a GP |
1346 | int drm_atomic_helper_wait_for_fences(struct drm_device *dev, |
1347 | struct drm_atomic_state *state, | |
1348 | bool pre_swap) | |
e2330f07 | 1349 | { |
df63b999 | 1350 | struct drm_plane *plane; |
415c3ac3 | 1351 | struct drm_plane_state *new_plane_state; |
f6ce410a | 1352 | int i, ret; |
e2330f07 | 1353 | |
415c3ac3 ML |
1354 | for_each_new_plane_in_state(state, plane, new_plane_state, i) { |
1355 | if (!new_plane_state->fence) | |
e2330f07 DV |
1356 | continue; |
1357 | ||
415c3ac3 | 1358 | WARN_ON(!new_plane_state->fb); |
f6ce410a GP |
1359 | |
1360 | /* | |
1361 | * If waiting for fences pre-swap (ie: nonblock), userspace can | |
1362 | * still interrupt the operation. Instead of blocking until the | |
1363 | * timer expires, make the wait interruptible. | |
1364 | */ | |
415c3ac3 | 1365 | ret = dma_fence_wait(new_plane_state->fence, pre_swap); |
f6ce410a GP |
1366 | if (ret) |
1367 | return ret; | |
e2330f07 | 1368 | |
415c3ac3 ML |
1369 | dma_fence_put(new_plane_state->fence); |
1370 | new_plane_state->fence = NULL; | |
e2330f07 | 1371 | } |
f6ce410a GP |
1372 | |
1373 | return 0; | |
e2330f07 | 1374 | } |
4c5b7f3a | 1375 | EXPORT_SYMBOL(drm_atomic_helper_wait_for_fences); |
e2330f07 | 1376 | |
5ee3229c RC |
1377 | /** |
1378 | * drm_atomic_helper_wait_for_vblanks - wait for vblank on crtcs | |
1379 | * @dev: DRM device | |
1380 | * @old_state: atomic state object with old state structures | |
1381 | * | |
1382 | * Helper to, after atomic commit, wait for vblanks on all effected | |
1383 | * crtcs (ie. before cleaning up old framebuffers using | |
01086487 | 1384 | * drm_atomic_helper_cleanup_planes()). It will only wait on CRTCs where the |
ab58e338 DV |
1385 | * framebuffers have actually changed to optimize for the legacy cursor and |
1386 | * plane update use-case. | |
01086487 BB |
1387 | * |
1388 | * Drivers using the nonblocking commit tracking support initialized by calling | |
1389 | * drm_atomic_helper_setup_commit() should look at | |
1390 | * drm_atomic_helper_wait_for_flip_done() as an alternative. | |
5ee3229c RC |
1391 | */ |
1392 | void | |
1393 | drm_atomic_helper_wait_for_vblanks(struct drm_device *dev, | |
1394 | struct drm_atomic_state *old_state) | |
623369e5 DV |
1395 | { |
1396 | struct drm_crtc *crtc; | |
415c3ac3 | 1397 | struct drm_crtc_state *old_crtc_state, *new_crtc_state; |
623369e5 | 1398 | int i, ret; |
bdc57146 | 1399 | unsigned crtc_mask = 0; |
623369e5 | 1400 | |
bdc57146 ML |
1401 | /* |
1402 | * Legacy cursor ioctls are completely unsynced, and userspace | |
1403 | * relies on that (by doing tons of cursor updates). | |
1404 | */ | |
1405 | if (old_state->legacy_cursor_update) | |
1406 | return; | |
623369e5 | 1407 | |
415c3ac3 | 1408 | for_each_oldnew_crtc_in_state(old_state, crtc, old_crtc_state, new_crtc_state, i) { |
a76dfe35 | 1409 | if (!new_crtc_state->active) |
ab58e338 DV |
1410 | continue; |
1411 | ||
623369e5 DV |
1412 | ret = drm_crtc_vblank_get(crtc); |
1413 | if (ret != 0) | |
1414 | continue; | |
1415 | ||
bdc57146 ML |
1416 | crtc_mask |= drm_crtc_mask(crtc); |
1417 | old_state->crtcs[i].last_vblank_count = drm_crtc_vblank_count(crtc); | |
623369e5 DV |
1418 | } |
1419 | ||
415c3ac3 | 1420 | for_each_old_crtc_in_state(old_state, crtc, old_crtc_state, i) { |
bdc57146 | 1421 | if (!(crtc_mask & drm_crtc_mask(crtc))) |
623369e5 DV |
1422 | continue; |
1423 | ||
1424 | ret = wait_event_timeout(dev->vblank[i].queue, | |
bdc57146 | 1425 | old_state->crtcs[i].last_vblank_count != |
d4853630 | 1426 | drm_crtc_vblank_count(crtc), |
623369e5 DV |
1427 | msecs_to_jiffies(50)); |
1428 | ||
6ac7c548 RK |
1429 | WARN(!ret, "[CRTC:%d:%s] vblank wait timed out\n", |
1430 | crtc->base.id, crtc->name); | |
8d4d0d70 | 1431 | |
623369e5 DV |
1432 | drm_crtc_vblank_put(crtc); |
1433 | } | |
1434 | } | |
5ee3229c | 1435 | EXPORT_SYMBOL(drm_atomic_helper_wait_for_vblanks); |
623369e5 | 1436 | |
01086487 BB |
1437 | /** |
1438 | * drm_atomic_helper_wait_for_flip_done - wait for all page flips to be done | |
1439 | * @dev: DRM device | |
1440 | * @old_state: atomic state object with old state structures | |
1441 | * | |
1442 | * Helper to, after atomic commit, wait for page flips on all effected | |
1443 | * crtcs (ie. before cleaning up old framebuffers using | |
1444 | * drm_atomic_helper_cleanup_planes()). Compared to | |
1445 | * drm_atomic_helper_wait_for_vblanks() this waits for the completion of on all | |
1446 | * CRTCs, assuming that cursors-only updates are signalling their completion | |
1447 | * immediately (or using a different path). | |
1448 | * | |
1449 | * This requires that drivers use the nonblocking commit tracking support | |
1450 | * initialized using drm_atomic_helper_setup_commit(). | |
1451 | */ | |
1452 | void drm_atomic_helper_wait_for_flip_done(struct drm_device *dev, | |
1453 | struct drm_atomic_state *old_state) | |
1454 | { | |
01086487 BB |
1455 | struct drm_crtc *crtc; |
1456 | int i; | |
1457 | ||
4364bcb2 LL |
1458 | for (i = 0; i < dev->mode_config.num_crtc; i++) { |
1459 | struct drm_crtc_commit *commit = old_state->crtcs[i].commit; | |
01086487 BB |
1460 | int ret; |
1461 | ||
4364bcb2 LL |
1462 | crtc = old_state->crtcs[i].ptr; |
1463 | ||
1464 | if (!crtc || !commit) | |
01086487 BB |
1465 | continue; |
1466 | ||
1467 | ret = wait_for_completion_timeout(&commit->flip_done, 10 * HZ); | |
1468 | if (ret == 0) | |
1469 | DRM_ERROR("[CRTC:%d:%s] flip_done timed out\n", | |
1470 | crtc->base.id, crtc->name); | |
1471 | } | |
2de42f79 VS |
1472 | |
1473 | if (old_state->fake_commit) | |
1474 | complete_all(&old_state->fake_commit->flip_done); | |
01086487 BB |
1475 | } |
1476 | EXPORT_SYMBOL(drm_atomic_helper_wait_for_flip_done); | |
1477 | ||
623369e5 | 1478 | /** |
9f2a7950 | 1479 | * drm_atomic_helper_commit_tail - commit atomic update to hardware |
1ea0c02e | 1480 | * @old_state: atomic state object with old state structures |
623369e5 | 1481 | * |
6806cdf9 | 1482 | * This is the default implementation for the |
81a099ac MR |
1483 | * &drm_mode_config_helper_funcs.atomic_commit_tail hook, for drivers |
1484 | * that do not support runtime_pm or do not need the CRTC to be | |
1485 | * enabled to perform a commit. Otherwise, see | |
1486 | * drm_atomic_helper_commit_tail_rpm(). | |
623369e5 | 1487 | * |
9f2a7950 | 1488 | * Note that the default ordering of how the various stages are called is to |
81a099ac | 1489 | * match the legacy modeset helper library closest. |
9f2a7950 | 1490 | */ |
1ea0c02e | 1491 | void drm_atomic_helper_commit_tail(struct drm_atomic_state *old_state) |
9f2a7950 | 1492 | { |
1ea0c02e | 1493 | struct drm_device *dev = old_state->dev; |
9f2a7950 | 1494 | |
1ea0c02e | 1495 | drm_atomic_helper_commit_modeset_disables(dev, old_state); |
9f2a7950 | 1496 | |
1ea0c02e | 1497 | drm_atomic_helper_commit_planes(dev, old_state, 0); |
9f2a7950 | 1498 | |
1ea0c02e | 1499 | drm_atomic_helper_commit_modeset_enables(dev, old_state); |
9f2a7950 | 1500 | |
6fb42b66 BB |
1501 | drm_atomic_helper_fake_vblank(old_state); |
1502 | ||
1ea0c02e | 1503 | drm_atomic_helper_commit_hw_done(old_state); |
9f2a7950 | 1504 | |
1ea0c02e | 1505 | drm_atomic_helper_wait_for_vblanks(dev, old_state); |
9f2a7950 | 1506 | |
1ea0c02e | 1507 | drm_atomic_helper_cleanup_planes(dev, old_state); |
9f2a7950 DV |
1508 | } |
1509 | EXPORT_SYMBOL(drm_atomic_helper_commit_tail); | |
1510 | ||
81a099ac MR |
1511 | /** |
1512 | * drm_atomic_helper_commit_tail_rpm - commit atomic update to hardware | |
1513 | * @old_state: new modeset state to be committed | |
1514 | * | |
1515 | * This is an alternative implementation for the | |
1516 | * &drm_mode_config_helper_funcs.atomic_commit_tail hook, for drivers | |
1517 | * that support runtime_pm or need the CRTC to be enabled to perform a | |
1518 | * commit. Otherwise, one should use the default implementation | |
1519 | * drm_atomic_helper_commit_tail(). | |
1520 | */ | |
1521 | void drm_atomic_helper_commit_tail_rpm(struct drm_atomic_state *old_state) | |
1522 | { | |
1523 | struct drm_device *dev = old_state->dev; | |
1524 | ||
1525 | drm_atomic_helper_commit_modeset_disables(dev, old_state); | |
1526 | ||
1527 | drm_atomic_helper_commit_modeset_enables(dev, old_state); | |
1528 | ||
1529 | drm_atomic_helper_commit_planes(dev, old_state, | |
1530 | DRM_PLANE_COMMIT_ACTIVE_ONLY); | |
1531 | ||
6fb42b66 BB |
1532 | drm_atomic_helper_fake_vblank(old_state); |
1533 | ||
81a099ac MR |
1534 | drm_atomic_helper_commit_hw_done(old_state); |
1535 | ||
1536 | drm_atomic_helper_wait_for_vblanks(dev, old_state); | |
1537 | ||
1538 | drm_atomic_helper_cleanup_planes(dev, old_state); | |
1539 | } | |
1540 | EXPORT_SYMBOL(drm_atomic_helper_commit_tail_rpm); | |
1541 | ||
1ea0c02e | 1542 | static void commit_tail(struct drm_atomic_state *old_state) |
9f2a7950 | 1543 | { |
1ea0c02e | 1544 | struct drm_device *dev = old_state->dev; |
a4b10cce | 1545 | const struct drm_mode_config_helper_funcs *funcs; |
9f2a7950 DV |
1546 | |
1547 | funcs = dev->mode_config.helper_private; | |
1548 | ||
1ea0c02e | 1549 | drm_atomic_helper_wait_for_fences(dev, old_state, false); |
9f2a7950 | 1550 | |
1ea0c02e | 1551 | drm_atomic_helper_wait_for_dependencies(old_state); |
9f2a7950 DV |
1552 | |
1553 | if (funcs && funcs->atomic_commit_tail) | |
1ea0c02e | 1554 | funcs->atomic_commit_tail(old_state); |
9f2a7950 | 1555 | else |
1ea0c02e | 1556 | drm_atomic_helper_commit_tail(old_state); |
9f2a7950 | 1557 | |
1ea0c02e | 1558 | drm_atomic_helper_commit_cleanup_done(old_state); |
9f2a7950 | 1559 | |
1ea0c02e | 1560 | drm_atomic_state_put(old_state); |
9f2a7950 DV |
1561 | } |
1562 | ||
1563 | static void commit_work(struct work_struct *work) | |
1564 | { | |
1565 | struct drm_atomic_state *state = container_of(work, | |
1566 | struct drm_atomic_state, | |
1567 | commit_work); | |
1568 | commit_tail(state); | |
1569 | } | |
1570 | ||
fef9df8b GP |
1571 | /** |
1572 | * drm_atomic_helper_async_check - check if state can be commited asynchronously | |
1573 | * @dev: DRM device | |
1574 | * @state: the driver state object | |
1575 | * | |
1576 | * This helper will check if it is possible to commit the state asynchronously. | |
1577 | * Async commits are not supposed to swap the states like normal sync commits | |
1578 | * but just do in-place changes on the current state. | |
1579 | * | |
1580 | * It will return 0 if the commit can happen in an asynchronous fashion or error | |
1581 | * if not. Note that error just mean it can't be commited asynchronously, if it | |
1582 | * fails the commit should be treated like a normal synchronous commit. | |
1583 | */ | |
1584 | int drm_atomic_helper_async_check(struct drm_device *dev, | |
1585 | struct drm_atomic_state *state) | |
1586 | { | |
1587 | struct drm_crtc *crtc; | |
1588 | struct drm_crtc_state *crtc_state; | |
de2d8db3 BB |
1589 | struct drm_plane *plane = NULL; |
1590 | struct drm_plane_state *old_plane_state = NULL; | |
1591 | struct drm_plane_state *new_plane_state = NULL; | |
fef9df8b | 1592 | const struct drm_plane_helper_funcs *funcs; |
669c9215 | 1593 | int i, n_planes = 0; |
fef9df8b GP |
1594 | |
1595 | for_each_new_crtc_in_state(state, crtc, crtc_state, i) { | |
1596 | if (drm_atomic_crtc_needs_modeset(crtc_state)) | |
1597 | return -EINVAL; | |
1598 | } | |
1599 | ||
669c9215 | 1600 | for_each_oldnew_plane_in_state(state, plane, old_plane_state, new_plane_state, i) |
fef9df8b | 1601 | n_planes++; |
fef9df8b GP |
1602 | |
1603 | /* FIXME: we support only single plane updates for now */ | |
669c9215 | 1604 | if (n_planes != 1) |
fef9df8b GP |
1605 | return -EINVAL; |
1606 | ||
603ba2df BB |
1607 | if (!new_plane_state->crtc || |
1608 | old_plane_state->crtc != new_plane_state->crtc) | |
fef9df8b GP |
1609 | return -EINVAL; |
1610 | ||
22163229 NK |
1611 | /* |
1612 | * FIXME: Since prepare_fb and cleanup_fb are always called on | |
1613 | * the new_plane_state for async updates we need to block framebuffer | |
1614 | * changes. This prevents use of a fb that's been cleaned up and | |
1615 | * double cleanups from occuring. | |
1616 | */ | |
1617 | if (old_plane_state->fb != new_plane_state->fb) | |
1618 | return -EINVAL; | |
1619 | ||
fef9df8b GP |
1620 | funcs = plane->helper_private; |
1621 | if (!funcs->atomic_async_update) | |
1622 | return -EINVAL; | |
1623 | ||
669c9215 | 1624 | if (new_plane_state->fence) |
fef9df8b GP |
1625 | return -EINVAL; |
1626 | ||
1627 | /* | |
1628 | * Don't do an async update if there is an outstanding commit modifying | |
1629 | * the plane. This prevents our async update's changes from getting | |
1630 | * overridden by a previous synchronous update's state. | |
1631 | */ | |
669c9215 ML |
1632 | if (old_plane_state->commit && |
1633 | !try_wait_for_completion(&old_plane_state->commit->hw_done)) | |
1634 | return -EBUSY; | |
fef9df8b | 1635 | |
669c9215 | 1636 | return funcs->atomic_async_check(plane, new_plane_state); |
fef9df8b GP |
1637 | } |
1638 | EXPORT_SYMBOL(drm_atomic_helper_async_check); | |
1639 | ||
1640 | /** | |
1641 | * drm_atomic_helper_async_commit - commit state asynchronously | |
1642 | * @dev: DRM device | |
1643 | * @state: the driver state object | |
1644 | * | |
1645 | * This function commits a state asynchronously, i.e., not vblank | |
1646 | * synchronized. It should be used on a state only when | |
1647 | * drm_atomic_async_check() succeeds. Async commits are not supposed to swap | |
1648 | * the states like normal sync commits, but just do in-place changes on the | |
1649 | * current state. | |
1650 | */ | |
1651 | void drm_atomic_helper_async_commit(struct drm_device *dev, | |
1652 | struct drm_atomic_state *state) | |
1653 | { | |
1654 | struct drm_plane *plane; | |
1655 | struct drm_plane_state *plane_state; | |
1656 | const struct drm_plane_helper_funcs *funcs; | |
1657 | int i; | |
1658 | ||
1659 | for_each_new_plane_in_state(state, plane, plane_state, i) { | |
1660 | funcs = plane->helper_private; | |
1661 | funcs->atomic_async_update(plane, plane_state); | |
02edfd9c BB |
1662 | |
1663 | /* | |
1664 | * ->atomic_async_update() is supposed to update the | |
1665 | * plane->state in-place, make sure at least common | |
1666 | * properties have been properly updated. | |
1667 | */ | |
1668 | WARN_ON_ONCE(plane->state->fb != plane_state->fb); | |
1669 | WARN_ON_ONCE(plane->state->crtc_x != plane_state->crtc_x); | |
1670 | WARN_ON_ONCE(plane->state->crtc_y != plane_state->crtc_y); | |
1671 | WARN_ON_ONCE(plane->state->src_x != plane_state->src_x); | |
1672 | WARN_ON_ONCE(plane->state->src_y != plane_state->src_y); | |
fef9df8b GP |
1673 | } |
1674 | } | |
1675 | EXPORT_SYMBOL(drm_atomic_helper_async_commit); | |
1676 | ||
9f2a7950 DV |
1677 | /** |
1678 | * drm_atomic_helper_commit - commit validated state object | |
1679 | * @dev: DRM device | |
1680 | * @state: the driver state object | |
1681 | * @nonblock: whether nonblocking behavior is requested. | |
1682 | * | |
1683 | * This function commits a with drm_atomic_helper_check() pre-validated state | |
1684 | * object. This can still fail when e.g. the framebuffer reservation fails. This | |
1685 | * function implements nonblocking commits, using | |
1686 | * drm_atomic_helper_setup_commit() and related functions. | |
1687 | * | |
9f2a7950 | 1688 | * Committing the actual hardware state is done through the |
1e55a53a | 1689 | * &drm_mode_config_helper_funcs.atomic_commit_tail callback, or its default |
6806cdf9 | 1690 | * implementation drm_atomic_helper_commit_tail(). |
6e48ae32 | 1691 | * |
c39032a8 | 1692 | * RETURNS: |
623369e5 DV |
1693 | * Zero for success or -errno. |
1694 | */ | |
1695 | int drm_atomic_helper_commit(struct drm_device *dev, | |
1696 | struct drm_atomic_state *state, | |
286dbb8d | 1697 | bool nonblock) |
623369e5 DV |
1698 | { |
1699 | int ret; | |
1700 | ||
fef9df8b GP |
1701 | if (state->async_update) { |
1702 | ret = drm_atomic_helper_prepare_planes(dev, state); | |
1703 | if (ret) | |
1704 | return ret; | |
1705 | ||
1706 | drm_atomic_helper_async_commit(dev, state); | |
1707 | drm_atomic_helper_cleanup_planes(dev, state); | |
1708 | ||
1709 | return 0; | |
1710 | } | |
1711 | ||
a095caa7 DV |
1712 | ret = drm_atomic_helper_setup_commit(state, nonblock); |
1713 | if (ret) | |
1714 | return ret; | |
1715 | ||
9f2a7950 DV |
1716 | INIT_WORK(&state->commit_work, commit_work); |
1717 | ||
623369e5 DV |
1718 | ret = drm_atomic_helper_prepare_planes(dev, state); |
1719 | if (ret) | |
1720 | return ret; | |
1721 | ||
f6ce410a GP |
1722 | if (!nonblock) { |
1723 | ret = drm_atomic_helper_wait_for_fences(dev, state, true); | |
c066d231 ML |
1724 | if (ret) |
1725 | goto err; | |
f6ce410a GP |
1726 | } |
1727 | ||
623369e5 DV |
1728 | /* |
1729 | * This is the point of no return - everything below never fails except | |
1730 | * when the hw goes bonghits. Which means we can commit the new state on | |
1731 | * the software side now. | |
1732 | */ | |
1733 | ||
c066d231 ML |
1734 | ret = drm_atomic_helper_swap_state(state, true); |
1735 | if (ret) | |
1736 | goto err; | |
623369e5 DV |
1737 | |
1738 | /* | |
1739 | * Everything below can be run asynchronously without the need to grab | |
f98bd3ef | 1740 | * any modeset locks at all under one condition: It must be guaranteed |
623369e5 DV |
1741 | * that the asynchronous work has either been cancelled (if the driver |
1742 | * supports it, which at least requires that the framebuffers get | |
1743 | * cleaned up with drm_atomic_helper_cleanup_planes()) or completed | |
1744 | * before the new state gets committed on the software side with | |
1745 | * drm_atomic_helper_swap_state(). | |
1746 | * | |
1747 | * This scheme allows new atomic state updates to be prepared and | |
1748 | * checked in parallel to the asynchronous completion of the previous | |
1749 | * update. Which is important since compositors need to figure out the | |
1750 | * composition of the next frame right after having submitted the | |
1751 | * current layout. | |
9f2a7950 DV |
1752 | * |
1753 | * NOTE: Commit work has multiple phases, first hardware commit, then | |
1754 | * cleanup. We want them to overlap, hence need system_unbound_wq to | |
1755 | * make sure work items don't artifically stall on each another. | |
623369e5 DV |
1756 | */ |
1757 | ||
0853695c | 1758 | drm_atomic_state_get(state); |
9f2a7950 DV |
1759 | if (nonblock) |
1760 | queue_work(system_unbound_wq, &state->commit_work); | |
1761 | else | |
1762 | commit_tail(state); | |
623369e5 DV |
1763 | |
1764 | return 0; | |
c066d231 ML |
1765 | |
1766 | err: | |
1767 | drm_atomic_helper_cleanup_planes(dev, state); | |
1768 | return ret; | |
623369e5 DV |
1769 | } |
1770 | EXPORT_SYMBOL(drm_atomic_helper_commit); | |
1771 | ||
e8c833a7 | 1772 | /** |
286dbb8d | 1773 | * DOC: implementing nonblocking commit |
e8c833a7 | 1774 | * |
9f2a7950 | 1775 | * Nonblocking atomic commits have to be implemented in the following sequence: |
e8c833a7 DV |
1776 | * |
1777 | * 1. Run drm_atomic_helper_prepare_planes() first. This is the only function | |
1778 | * which commit needs to call which can fail, so we want to run it first and | |
1779 | * synchronously. | |
1780 | * | |
286dbb8d | 1781 | * 2. Synchronize with any outstanding nonblocking commit worker threads which |
e8c833a7 DV |
1782 | * might be affected the new state update. This can be done by either cancelling |
1783 | * or flushing the work items, depending upon whether the driver can deal with | |
1784 | * cancelled updates. Note that it is important to ensure that the framebuffer | |
1785 | * cleanup is still done when cancelling. | |
1786 | * | |
9f2a7950 DV |
1787 | * Asynchronous workers need to have sufficient parallelism to be able to run |
1788 | * different atomic commits on different CRTCs in parallel. The simplest way to | |
1789 | * achive this is by running them on the &system_unbound_wq work queue. Note | |
1790 | * that drivers are not required to split up atomic commits and run an | |
1791 | * individual commit in parallel - userspace is supposed to do that if it cares. | |
1792 | * But it might be beneficial to do that for modesets, since those necessarily | |
1793 | * must be done as one global operation, and enabling or disabling a CRTC can | |
1794 | * take a long time. But even that is not required. | |
e8c833a7 DV |
1795 | * |
1796 | * 3. The software state is updated synchronously with | |
26196f7e | 1797 | * drm_atomic_helper_swap_state(). Doing this under the protection of all modeset |
e8c833a7 | 1798 | * locks means concurrent callers never see inconsistent state. And doing this |
286dbb8d ML |
1799 | * while it's guaranteed that no relevant nonblocking worker runs means that |
1800 | * nonblocking workers do not need grab any locks. Actually they must not grab | |
1801 | * locks, for otherwise the work flushing will deadlock. | |
e8c833a7 DV |
1802 | * |
1803 | * 4. Schedule a work item to do all subsequent steps, using the split-out | |
1804 | * commit helpers: a) pre-plane commit b) plane commit c) post-plane commit and | |
1805 | * then cleaning up the framebuffers after the old framebuffer is no longer | |
1806 | * being displayed. | |
9f2a7950 DV |
1807 | * |
1808 | * The above scheme is implemented in the atomic helper libraries in | |
1809 | * drm_atomic_helper_commit() using a bunch of helper functions. See | |
1810 | * drm_atomic_helper_setup_commit() for a starting point. | |
e8c833a7 DV |
1811 | */ |
1812 | ||
a095caa7 DV |
1813 | static int stall_checks(struct drm_crtc *crtc, bool nonblock) |
1814 | { | |
1815 | struct drm_crtc_commit *commit, *stall_commit = NULL; | |
1816 | bool completed = true; | |
1817 | int i; | |
1818 | long ret = 0; | |
1819 | ||
1820 | spin_lock(&crtc->commit_lock); | |
1821 | i = 0; | |
1822 | list_for_each_entry(commit, &crtc->commit_list, commit_entry) { | |
1823 | if (i == 0) { | |
1824 | completed = try_wait_for_completion(&commit->flip_done); | |
1825 | /* Userspace is not allowed to get ahead of the previous | |
1826 | * commit with nonblocking ones. */ | |
1827 | if (!completed && nonblock) { | |
1828 | spin_unlock(&crtc->commit_lock); | |
1829 | return -EBUSY; | |
1830 | } | |
1831 | } else if (i == 1) { | |
f46640b9 | 1832 | stall_commit = drm_crtc_commit_get(commit); |
a095caa7 | 1833 | break; |
723c3e55 | 1834 | } |
a095caa7 DV |
1835 | |
1836 | i++; | |
1837 | } | |
1838 | spin_unlock(&crtc->commit_lock); | |
1839 | ||
1840 | if (!stall_commit) | |
1841 | return 0; | |
1842 | ||
1843 | /* We don't want to let commits get ahead of cleanup work too much, | |
1844 | * stalling on 2nd previous commit means triple-buffer won't ever stall. | |
1845 | */ | |
723c3e55 | 1846 | ret = wait_for_completion_interruptible_timeout(&stall_commit->cleanup_done, |
a095caa7 DV |
1847 | 10*HZ); |
1848 | if (ret == 0) | |
1849 | DRM_ERROR("[CRTC:%d:%s] cleanup_done timed out\n", | |
1850 | crtc->base.id, crtc->name); | |
1851 | ||
1852 | drm_crtc_commit_put(stall_commit); | |
1853 | ||
1854 | return ret < 0 ? ret : 0; | |
1855 | } | |
1856 | ||
899cc5f1 | 1857 | static void release_crtc_commit(struct completion *completion) |
24835e44 DV |
1858 | { |
1859 | struct drm_crtc_commit *commit = container_of(completion, | |
1860 | typeof(*commit), | |
1861 | flip_done); | |
1862 | ||
1863 | drm_crtc_commit_put(commit); | |
1864 | } | |
1865 | ||
21a01abb ML |
1866 | static void init_commit(struct drm_crtc_commit *commit, struct drm_crtc *crtc) |
1867 | { | |
1868 | init_completion(&commit->flip_done); | |
1869 | init_completion(&commit->hw_done); | |
1870 | init_completion(&commit->cleanup_done); | |
1871 | INIT_LIST_HEAD(&commit->commit_entry); | |
1872 | kref_init(&commit->ref); | |
1873 | commit->crtc = crtc; | |
1874 | } | |
1875 | ||
1876 | static struct drm_crtc_commit * | |
1877 | crtc_or_fake_commit(struct drm_atomic_state *state, struct drm_crtc *crtc) | |
1878 | { | |
1879 | if (crtc) { | |
1880 | struct drm_crtc_state *new_crtc_state; | |
1881 | ||
1882 | new_crtc_state = drm_atomic_get_new_crtc_state(state, crtc); | |
1883 | ||
1884 | return new_crtc_state->commit; | |
1885 | } | |
1886 | ||
1887 | if (!state->fake_commit) { | |
1888 | state->fake_commit = kzalloc(sizeof(*state->fake_commit), GFP_KERNEL); | |
1889 | if (!state->fake_commit) | |
1890 | return NULL; | |
1891 | ||
1892 | init_commit(state->fake_commit, NULL); | |
1893 | } | |
1894 | ||
1895 | return state->fake_commit; | |
1896 | } | |
1897 | ||
a095caa7 DV |
1898 | /** |
1899 | * drm_atomic_helper_setup_commit - setup possibly nonblocking commit | |
1900 | * @state: new modeset state to be committed | |
1901 | * @nonblock: whether nonblocking behavior is requested. | |
1902 | * | |
1903 | * This function prepares @state to be used by the atomic helper's support for | |
1904 | * nonblocking commits. Drivers using the nonblocking commit infrastructure | |
6806cdf9 DV |
1905 | * should always call this function from their |
1906 | * &drm_mode_config_funcs.atomic_commit hook. | |
a095caa7 DV |
1907 | * |
1908 | * To be able to use this support drivers need to use a few more helper | |
1909 | * functions. drm_atomic_helper_wait_for_dependencies() must be called before | |
1910 | * actually committing the hardware state, and for nonblocking commits this call | |
1911 | * must be placed in the async worker. See also drm_atomic_helper_swap_state() | |
1e55a53a | 1912 | * and its stall parameter, for when a driver's commit hooks look at the |
6806cdf9 | 1913 | * &drm_crtc.state, &drm_plane.state or &drm_connector.state pointer directly. |
a095caa7 DV |
1914 | * |
1915 | * Completion of the hardware commit step must be signalled using | |
1916 | * drm_atomic_helper_commit_hw_done(). After this step the driver is not allowed | |
1917 | * to read or change any permanent software or hardware modeset state. The only | |
1918 | * exception is state protected by other means than &drm_modeset_lock locks. | |
1919 | * Only the free standing @state with pointers to the old state structures can | |
1920 | * be inspected, e.g. to clean up old buffers using | |
1921 | * drm_atomic_helper_cleanup_planes(). | |
1922 | * | |
1923 | * At the very end, before cleaning up @state drivers must call | |
1924 | * drm_atomic_helper_commit_cleanup_done(). | |
1925 | * | |
1926 | * This is all implemented by in drm_atomic_helper_commit(), giving drivers a | |
9ac07815 | 1927 | * complete and easy-to-use default implementation of the atomic_commit() hook. |
a095caa7 DV |
1928 | * |
1929 | * The tracking of asynchronously executed and still pending commits is done | |
1930 | * using the core structure &drm_crtc_commit. | |
1931 | * | |
1932 | * By default there's no need to clean up resources allocated by this function | |
1933 | * explicitly: drm_atomic_state_default_clear() will take care of that | |
1934 | * automatically. | |
1935 | * | |
1936 | * Returns: | |
1937 | * | |
1938 | * 0 on success. -EBUSY when userspace schedules nonblocking commits too fast, | |
1939 | * -ENOMEM on allocation failures and -EINTR when a signal is pending. | |
1940 | */ | |
1941 | int drm_atomic_helper_setup_commit(struct drm_atomic_state *state, | |
1942 | bool nonblock) | |
1943 | { | |
1944 | struct drm_crtc *crtc; | |
415c3ac3 | 1945 | struct drm_crtc_state *old_crtc_state, *new_crtc_state; |
21a01abb ML |
1946 | struct drm_connector *conn; |
1947 | struct drm_connector_state *old_conn_state, *new_conn_state; | |
1948 | struct drm_plane *plane; | |
1949 | struct drm_plane_state *old_plane_state, *new_plane_state; | |
a095caa7 DV |
1950 | struct drm_crtc_commit *commit; |
1951 | int i, ret; | |
1952 | ||
415c3ac3 | 1953 | for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) { |
a095caa7 DV |
1954 | commit = kzalloc(sizeof(*commit), GFP_KERNEL); |
1955 | if (!commit) | |
1956 | return -ENOMEM; | |
1957 | ||
21a01abb | 1958 | init_commit(commit, crtc); |
a095caa7 | 1959 | |
163bcc2c | 1960 | new_crtc_state->commit = commit; |
a095caa7 DV |
1961 | |
1962 | ret = stall_checks(crtc, nonblock); | |
1963 | if (ret) | |
1964 | return ret; | |
1965 | ||
1966 | /* Drivers only send out events when at least either current or | |
1967 | * new CRTC state is active. Complete right away if everything | |
1968 | * stays off. */ | |
415c3ac3 | 1969 | if (!old_crtc_state->active && !new_crtc_state->active) { |
a095caa7 DV |
1970 | complete_all(&commit->flip_done); |
1971 | continue; | |
1972 | } | |
1973 | ||
1974 | /* Legacy cursor updates are fully unsynced. */ | |
1975 | if (state->legacy_cursor_update) { | |
1976 | complete_all(&commit->flip_done); | |
1977 | continue; | |
1978 | } | |
1979 | ||
415c3ac3 | 1980 | if (!new_crtc_state->event) { |
a095caa7 DV |
1981 | commit->event = kzalloc(sizeof(*commit->event), |
1982 | GFP_KERNEL); | |
1983 | if (!commit->event) | |
1984 | return -ENOMEM; | |
1985 | ||
415c3ac3 | 1986 | new_crtc_state->event = commit->event; |
a095caa7 DV |
1987 | } |
1988 | ||
415c3ac3 ML |
1989 | new_crtc_state->event->base.completion = &commit->flip_done; |
1990 | new_crtc_state->event->base.completion_release = release_crtc_commit; | |
24835e44 | 1991 | drm_crtc_commit_get(commit); |
1c6ceeee LSL |
1992 | |
1993 | commit->abort_completion = true; | |
4364bcb2 LL |
1994 | |
1995 | state->crtcs[i].commit = commit; | |
1996 | drm_crtc_commit_get(commit); | |
a095caa7 DV |
1997 | } |
1998 | ||
21a01abb | 1999 | for_each_oldnew_connector_in_state(state, conn, old_conn_state, new_conn_state, i) { |
21a01abb ML |
2000 | /* Userspace is not allowed to get ahead of the previous |
2001 | * commit with nonblocking ones. */ | |
2002 | if (nonblock && old_conn_state->commit && | |
2003 | !try_wait_for_completion(&old_conn_state->commit->flip_done)) | |
2004 | return -EBUSY; | |
a095caa7 | 2005 | |
1f2d9bdc DV |
2006 | /* Always track connectors explicitly for e.g. link retraining. */ |
2007 | commit = crtc_or_fake_commit(state, new_conn_state->crtc ?: old_conn_state->crtc); | |
21a01abb ML |
2008 | if (!commit) |
2009 | return -ENOMEM; | |
a095caa7 | 2010 | |
21a01abb ML |
2011 | new_conn_state->commit = drm_crtc_commit_get(commit); |
2012 | } | |
2013 | ||
2014 | for_each_oldnew_plane_in_state(state, plane, old_plane_state, new_plane_state, i) { | |
21a01abb ML |
2015 | /* Userspace is not allowed to get ahead of the previous |
2016 | * commit with nonblocking ones. */ | |
2017 | if (nonblock && old_plane_state->commit && | |
2018 | !try_wait_for_completion(&old_plane_state->commit->flip_done)) | |
2019 | return -EBUSY; | |
2020 | ||
1f2d9bdc | 2021 | /* Always track planes explicitly for async pageflip support. */ |
4edd6084 | 2022 | commit = crtc_or_fake_commit(state, new_plane_state->crtc ?: old_plane_state->crtc); |
21a01abb ML |
2023 | if (!commit) |
2024 | return -ENOMEM; | |
2025 | ||
2026 | new_plane_state->commit = drm_crtc_commit_get(commit); | |
a095caa7 DV |
2027 | } |
2028 | ||
a095caa7 | 2029 | return 0; |
a095caa7 | 2030 | } |
a095caa7 | 2031 | EXPORT_SYMBOL(drm_atomic_helper_setup_commit); |
a095caa7 DV |
2032 | |
2033 | /** | |
2034 | * drm_atomic_helper_wait_for_dependencies - wait for required preceeding commits | |
1ea0c02e | 2035 | * @old_state: atomic state object with old state structures |
a095caa7 DV |
2036 | * |
2037 | * This function waits for all preceeding commits that touch the same CRTC as | |
1ea0c02e | 2038 | * @old_state to both be committed to the hardware (as signalled by |
a095caa7 | 2039 | * drm_atomic_helper_commit_hw_done) and executed by the hardware (as signalled |
277b09cf | 2040 | * by calling drm_crtc_send_vblank_event() on the &drm_crtc_state.event). |
a095caa7 DV |
2041 | * |
2042 | * This is part of the atomic helper support for nonblocking commits, see | |
2043 | * drm_atomic_helper_setup_commit() for an overview. | |
2044 | */ | |
1ea0c02e | 2045 | void drm_atomic_helper_wait_for_dependencies(struct drm_atomic_state *old_state) |
a095caa7 DV |
2046 | { |
2047 | struct drm_crtc *crtc; | |
163bcc2c | 2048 | struct drm_crtc_state *old_crtc_state; |
21a01abb ML |
2049 | struct drm_plane *plane; |
2050 | struct drm_plane_state *old_plane_state; | |
2051 | struct drm_connector *conn; | |
2052 | struct drm_connector_state *old_conn_state; | |
a095caa7 DV |
2053 | struct drm_crtc_commit *commit; |
2054 | int i; | |
2055 | long ret; | |
2056 | ||
163bcc2c ML |
2057 | for_each_old_crtc_in_state(old_state, crtc, old_crtc_state, i) { |
2058 | commit = old_crtc_state->commit; | |
a095caa7 DV |
2059 | |
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("[CRTC:%d:%s] hw_done timed out\n", | |
2067 | crtc->base.id, crtc->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("[CRTC:%d:%s] flip_done timed out\n", | |
2075 | crtc->base.id, crtc->name); | |
a095caa7 | 2076 | } |
21a01abb ML |
2077 | |
2078 | for_each_old_connector_in_state(old_state, conn, old_conn_state, i) { | |
2079 | commit = old_conn_state->commit; | |
a095caa7 | 2080 | |
21a01abb ML |
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("[CONNECTOR:%d:%s] hw_done timed out\n", | |
2088 | conn->base.id, conn->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("[CONNECTOR:%d:%s] flip_done timed out\n", | |
2096 | conn->base.id, conn->name); | |
2097 | } | |
2098 | ||
2099 | for_each_old_plane_in_state(old_state, plane, old_plane_state, i) { | |
2100 | commit = old_plane_state->commit; | |
2101 | ||
2102 | if (!commit) | |
2103 | continue; | |
2104 | ||
2105 | ret = wait_for_completion_timeout(&commit->hw_done, | |
2106 | 10*HZ); | |
2107 | if (ret == 0) | |
2108 | DRM_ERROR("[PLANE:%d:%s] hw_done timed out\n", | |
2109 | plane->base.id, plane->name); | |
2110 | ||
2111 | /* Currently no support for overwriting flips, hence | |
2112 | * stall for previous one to execute completely. */ | |
2113 | ret = wait_for_completion_timeout(&commit->flip_done, | |
2114 | 10*HZ); | |
2115 | if (ret == 0) | |
2116 | DRM_ERROR("[PLANE:%d:%s] flip_done timed out\n", | |
2117 | plane->base.id, plane->name); | |
a095caa7 DV |
2118 | } |
2119 | } | |
2120 | EXPORT_SYMBOL(drm_atomic_helper_wait_for_dependencies); | |
2121 | ||
b25c60af BB |
2122 | /** |
2123 | * drm_atomic_helper_fake_vblank - fake VBLANK events if needed | |
2124 | * @old_state: atomic state object with old state structures | |
2125 | * | |
2126 | * This function walks all CRTCs and fake VBLANK events on those with | |
2127 | * &drm_crtc_state.no_vblank set to true and &drm_crtc_state.event != NULL. | |
2128 | * The primary use of this function is writeback connectors working in oneshot | |
2129 | * mode and faking VBLANK events. In this case they only fake the VBLANK event | |
2130 | * when a job is queued, and any change to the pipeline that does not touch the | |
2131 | * connector is leading to timeouts when calling | |
2132 | * drm_atomic_helper_wait_for_vblanks() or | |
2133 | * drm_atomic_helper_wait_for_flip_done(). | |
2134 | * | |
2135 | * This is part of the atomic helper support for nonblocking commits, see | |
2136 | * drm_atomic_helper_setup_commit() for an overview. | |
2137 | */ | |
2138 | void drm_atomic_helper_fake_vblank(struct drm_atomic_state *old_state) | |
2139 | { | |
2140 | struct drm_crtc_state *new_crtc_state; | |
2141 | struct drm_crtc *crtc; | |
2142 | int i; | |
2143 | ||
2144 | for_each_new_crtc_in_state(old_state, crtc, new_crtc_state, i) { | |
2145 | unsigned long flags; | |
2146 | ||
2147 | if (!new_crtc_state->no_vblank) | |
2148 | continue; | |
2149 | ||
2150 | spin_lock_irqsave(&old_state->dev->event_lock, flags); | |
2151 | if (new_crtc_state->event) { | |
2152 | drm_crtc_send_vblank_event(crtc, | |
2153 | new_crtc_state->event); | |
2154 | new_crtc_state->event = NULL; | |
2155 | } | |
2156 | spin_unlock_irqrestore(&old_state->dev->event_lock, flags); | |
2157 | } | |
2158 | } | |
2159 | EXPORT_SYMBOL(drm_atomic_helper_fake_vblank); | |
2160 | ||
a095caa7 DV |
2161 | /** |
2162 | * drm_atomic_helper_commit_hw_done - setup possible nonblocking commit | |
1ea0c02e | 2163 | * @old_state: atomic state object with old state structures |
a095caa7 DV |
2164 | * |
2165 | * This function is used to signal completion of the hardware commit step. After | |
2166 | * this step the driver is not allowed to read or change any permanent software | |
2167 | * or hardware modeset state. The only exception is state protected by other | |
2168 | * means than &drm_modeset_lock locks. | |
2169 | * | |
2170 | * Drivers should try to postpone any expensive or delayed cleanup work after | |
2171 | * this function is called. | |
2172 | * | |
2173 | * This is part of the atomic helper support for nonblocking commits, see | |
2174 | * drm_atomic_helper_setup_commit() for an overview. | |
2175 | */ | |
1ea0c02e | 2176 | void drm_atomic_helper_commit_hw_done(struct drm_atomic_state *old_state) |
a095caa7 DV |
2177 | { |
2178 | struct drm_crtc *crtc; | |
163bcc2c | 2179 | struct drm_crtc_state *old_crtc_state, *new_crtc_state; |
a095caa7 DV |
2180 | struct drm_crtc_commit *commit; |
2181 | int i; | |
2182 | ||
163bcc2c ML |
2183 | for_each_oldnew_crtc_in_state(old_state, crtc, old_crtc_state, new_crtc_state, i) { |
2184 | commit = new_crtc_state->commit; | |
a095caa7 DV |
2185 | if (!commit) |
2186 | continue; | |
2187 | ||
163bcc2c ML |
2188 | /* |
2189 | * copy new_crtc_state->commit to old_crtc_state->commit, | |
2190 | * it's unsafe to touch new_crtc_state after hw_done, | |
2191 | * but we still need to do so in cleanup_done(). | |
2192 | */ | |
2193 | if (old_crtc_state->commit) | |
2194 | drm_crtc_commit_put(old_crtc_state->commit); | |
2195 | ||
2196 | old_crtc_state->commit = drm_crtc_commit_get(commit); | |
2197 | ||
a095caa7 | 2198 | /* backend must have consumed any event by now */ |
415c3ac3 | 2199 | WARN_ON(new_crtc_state->event); |
a095caa7 | 2200 | complete_all(&commit->hw_done); |
a095caa7 | 2201 | } |
21a01abb ML |
2202 | |
2203 | if (old_state->fake_commit) { | |
2204 | complete_all(&old_state->fake_commit->hw_done); | |
2205 | complete_all(&old_state->fake_commit->flip_done); | |
2206 | } | |
a095caa7 DV |
2207 | } |
2208 | EXPORT_SYMBOL(drm_atomic_helper_commit_hw_done); | |
2209 | ||
2210 | /** | |
2211 | * drm_atomic_helper_commit_cleanup_done - signal completion of commit | |
1ea0c02e | 2212 | * @old_state: atomic state object with old state structures |
a095caa7 | 2213 | * |
1ea0c02e DV |
2214 | * This signals completion of the atomic update @old_state, including any |
2215 | * cleanup work. If used, it must be called right before calling | |
0853695c | 2216 | * drm_atomic_state_put(). |
a095caa7 DV |
2217 | * |
2218 | * This is part of the atomic helper support for nonblocking commits, see | |
2219 | * drm_atomic_helper_setup_commit() for an overview. | |
2220 | */ | |
1ea0c02e | 2221 | void drm_atomic_helper_commit_cleanup_done(struct drm_atomic_state *old_state) |
a095caa7 DV |
2222 | { |
2223 | struct drm_crtc *crtc; | |
163bcc2c | 2224 | struct drm_crtc_state *old_crtc_state; |
a095caa7 DV |
2225 | struct drm_crtc_commit *commit; |
2226 | int i; | |
a095caa7 | 2227 | |
163bcc2c ML |
2228 | for_each_old_crtc_in_state(old_state, crtc, old_crtc_state, i) { |
2229 | commit = old_crtc_state->commit; | |
a095caa7 DV |
2230 | if (WARN_ON(!commit)) |
2231 | continue; | |
2232 | ||
a095caa7 DV |
2233 | complete_all(&commit->cleanup_done); |
2234 | WARN_ON(!try_wait_for_completion(&commit->hw_done)); | |
2235 | ||
7141fd3e | 2236 | spin_lock(&crtc->commit_lock); |
a095caa7 DV |
2237 | list_del(&commit->commit_entry); |
2238 | spin_unlock(&crtc->commit_lock); | |
2239 | } | |
21a01abb | 2240 | |
10a599fa | 2241 | if (old_state->fake_commit) { |
21a01abb | 2242 | complete_all(&old_state->fake_commit->cleanup_done); |
10a599fa VS |
2243 | WARN_ON(!try_wait_for_completion(&old_state->fake_commit->hw_done)); |
2244 | } | |
a095caa7 DV |
2245 | } |
2246 | EXPORT_SYMBOL(drm_atomic_helper_commit_cleanup_done); | |
2247 | ||
c2fcd274 | 2248 | /** |
2e3afd47 | 2249 | * drm_atomic_helper_prepare_planes - prepare plane resources before commit |
c2fcd274 | 2250 | * @dev: DRM device |
2e3afd47 | 2251 | * @state: atomic state object with new state structures |
c2fcd274 DV |
2252 | * |
2253 | * This function prepares plane state, specifically framebuffers, for the new | |
6806cdf9 DV |
2254 | * configuration, by calling &drm_plane_helper_funcs.prepare_fb. If any failure |
2255 | * is encountered this function will call &drm_plane_helper_funcs.cleanup_fb on | |
2256 | * any already successfully prepared framebuffer. | |
c2fcd274 DV |
2257 | * |
2258 | * Returns: | |
2259 | * 0 on success, negative error code on failure. | |
2260 | */ | |
2261 | int drm_atomic_helper_prepare_planes(struct drm_device *dev, | |
2262 | struct drm_atomic_state *state) | |
2263 | { | |
be9174a4 | 2264 | struct drm_plane *plane; |
415c3ac3 | 2265 | struct drm_plane_state *new_plane_state; |
be9174a4 | 2266 | int ret, i, j; |
c2fcd274 | 2267 | |
415c3ac3 | 2268 | for_each_new_plane_in_state(state, plane, new_plane_state, i) { |
b5ceff20 | 2269 | const struct drm_plane_helper_funcs *funcs; |
c2fcd274 DV |
2270 | |
2271 | funcs = plane->helper_private; | |
2272 | ||
844f9111 | 2273 | if (funcs->prepare_fb) { |
415c3ac3 | 2274 | ret = funcs->prepare_fb(plane, new_plane_state); |
c2fcd274 DV |
2275 | if (ret) |
2276 | goto fail; | |
2277 | } | |
2278 | } | |
2279 | ||
2280 | return 0; | |
2281 | ||
2282 | fail: | |
415c3ac3 | 2283 | for_each_new_plane_in_state(state, plane, new_plane_state, j) { |
b5ceff20 | 2284 | const struct drm_plane_helper_funcs *funcs; |
c2fcd274 | 2285 | |
be9174a4 | 2286 | if (j >= i) |
c2fcd274 DV |
2287 | continue; |
2288 | ||
2289 | funcs = plane->helper_private; | |
2290 | ||
844f9111 | 2291 | if (funcs->cleanup_fb) |
415c3ac3 | 2292 | funcs->cleanup_fb(plane, new_plane_state); |
c2fcd274 DV |
2293 | } |
2294 | ||
2295 | return ret; | |
2296 | } | |
2297 | EXPORT_SYMBOL(drm_atomic_helper_prepare_planes); | |
2298 | ||
7135ac54 | 2299 | static bool plane_crtc_active(const struct drm_plane_state *state) |
aef9dbb8 DV |
2300 | { |
2301 | return state->crtc && state->crtc->state->active; | |
2302 | } | |
2303 | ||
c2fcd274 DV |
2304 | /** |
2305 | * drm_atomic_helper_commit_planes - commit plane state | |
2306 | * @dev: DRM device | |
b0fcfc89 | 2307 | * @old_state: atomic state object with old state structures |
2b58e98d | 2308 | * @flags: flags for committing plane state |
c2fcd274 DV |
2309 | * |
2310 | * This function commits the new plane state using the plane and atomic helper | |
2311 | * functions for planes and crtcs. It assumes that the atomic state has already | |
2312 | * been pushed into the relevant object state pointers, since this step can no | |
2313 | * longer fail. | |
2314 | * | |
b0fcfc89 | 2315 | * It still requires the global state object @old_state to know which planes and |
c2fcd274 | 2316 | * crtcs need to be updated though. |
de28d021 ML |
2317 | * |
2318 | * Note that this function does all plane updates across all CRTCs in one step. | |
2319 | * If the hardware can't support this approach look at | |
2320 | * drm_atomic_helper_commit_planes_on_crtc() instead. | |
6e48ae32 DV |
2321 | * |
2322 | * Plane parameters can be updated by applications while the associated CRTC is | |
2323 | * disabled. The DRM/KMS core will store the parameters in the plane state, | |
2324 | * which will be available to the driver when the CRTC is turned on. As a result | |
2325 | * most drivers don't need to be immediately notified of plane updates for a | |
2326 | * disabled CRTC. | |
2327 | * | |
2b58e98d LY |
2328 | * Unless otherwise needed, drivers are advised to set the ACTIVE_ONLY flag in |
2329 | * @flags in order not to receive plane update notifications related to a | |
2330 | * disabled CRTC. This avoids the need to manually ignore plane updates in | |
6e48ae32 DV |
2331 | * driver code when the driver and/or hardware can't or just don't need to deal |
2332 | * with updates on disabled CRTCs, for example when supporting runtime PM. | |
2333 | * | |
2b58e98d LY |
2334 | * Drivers may set the NO_DISABLE_AFTER_MODESET flag in @flags if the relevant |
2335 | * display controllers require to disable a CRTC's planes when the CRTC is | |
6806cdf9 DV |
2336 | * disabled. This function would skip the &drm_plane_helper_funcs.atomic_disable |
2337 | * call for a plane if the CRTC of the old plane state needs a modesetting | |
2338 | * operation. Of course, the drivers need to disable the planes in their CRTC | |
2339 | * disable callbacks since no one else would do that. | |
2b58e98d LY |
2340 | * |
2341 | * The drm_atomic_helper_commit() default implementation doesn't set the | |
2342 | * ACTIVE_ONLY flag to most closely match the behaviour of the legacy helpers. | |
2343 | * This should not be copied blindly by drivers. | |
c2fcd274 DV |
2344 | */ |
2345 | void drm_atomic_helper_commit_planes(struct drm_device *dev, | |
aef9dbb8 | 2346 | struct drm_atomic_state *old_state, |
2b58e98d | 2347 | uint32_t flags) |
c2fcd274 | 2348 | { |
df63b999 | 2349 | struct drm_crtc *crtc; |
415c3ac3 | 2350 | struct drm_crtc_state *old_crtc_state, *new_crtc_state; |
df63b999 | 2351 | struct drm_plane *plane; |
415c3ac3 | 2352 | struct drm_plane_state *old_plane_state, *new_plane_state; |
c2fcd274 | 2353 | int i; |
2b58e98d LY |
2354 | bool active_only = flags & DRM_PLANE_COMMIT_ACTIVE_ONLY; |
2355 | bool no_disable = flags & DRM_PLANE_COMMIT_NO_DISABLE_AFTER_MODESET; | |
c2fcd274 | 2356 | |
415c3ac3 | 2357 | for_each_oldnew_crtc_in_state(old_state, crtc, old_crtc_state, new_crtc_state, i) { |
b5ceff20 | 2358 | const struct drm_crtc_helper_funcs *funcs; |
c2fcd274 DV |
2359 | |
2360 | funcs = crtc->helper_private; | |
2361 | ||
2362 | if (!funcs || !funcs->atomic_begin) | |
2363 | continue; | |
2364 | ||
415c3ac3 | 2365 | if (active_only && !new_crtc_state->active) |
aef9dbb8 DV |
2366 | continue; |
2367 | ||
613d2b27 | 2368 | funcs->atomic_begin(crtc, old_crtc_state); |
c2fcd274 DV |
2369 | } |
2370 | ||
415c3ac3 | 2371 | for_each_oldnew_plane_in_state(old_state, plane, old_plane_state, new_plane_state, i) { |
b5ceff20 | 2372 | const struct drm_plane_helper_funcs *funcs; |
216c59d6 | 2373 | bool disabling; |
c2fcd274 DV |
2374 | |
2375 | funcs = plane->helper_private; | |
2376 | ||
3cad4b68 | 2377 | if (!funcs) |
c2fcd274 DV |
2378 | continue; |
2379 | ||
51ffa12d ML |
2380 | disabling = drm_atomic_plane_disabling(old_plane_state, |
2381 | new_plane_state); | |
216c59d6 LP |
2382 | |
2383 | if (active_only) { | |
2384 | /* | |
2385 | * Skip planes related to inactive CRTCs. If the plane | |
2386 | * is enabled use the state of the current CRTC. If the | |
2387 | * plane is being disabled use the state of the old | |
2388 | * CRTC to avoid skipping planes being disabled on an | |
2389 | * active CRTC. | |
2390 | */ | |
415c3ac3 | 2391 | if (!disabling && !plane_crtc_active(new_plane_state)) |
216c59d6 LP |
2392 | continue; |
2393 | if (disabling && !plane_crtc_active(old_plane_state)) | |
2394 | continue; | |
2395 | } | |
aef9dbb8 | 2396 | |
407b8bd9 TR |
2397 | /* |
2398 | * Special-case disabling the plane if drivers support it. | |
2399 | */ | |
2b58e98d LY |
2400 | if (disabling && funcs->atomic_disable) { |
2401 | struct drm_crtc_state *crtc_state; | |
2402 | ||
2403 | crtc_state = old_plane_state->crtc->state; | |
2404 | ||
2405 | if (drm_atomic_crtc_needs_modeset(crtc_state) && | |
2406 | no_disable) | |
2407 | continue; | |
2408 | ||
407b8bd9 | 2409 | funcs->atomic_disable(plane, old_plane_state); |
415c3ac3 | 2410 | } else if (new_plane_state->crtc || disabling) { |
407b8bd9 | 2411 | funcs->atomic_update(plane, old_plane_state); |
2b58e98d | 2412 | } |
c2fcd274 DV |
2413 | } |
2414 | ||
415c3ac3 | 2415 | for_each_oldnew_crtc_in_state(old_state, crtc, old_crtc_state, new_crtc_state, i) { |
b5ceff20 | 2416 | const struct drm_crtc_helper_funcs *funcs; |
c2fcd274 DV |
2417 | |
2418 | funcs = crtc->helper_private; | |
2419 | ||
2420 | if (!funcs || !funcs->atomic_flush) | |
2421 | continue; | |
2422 | ||
415c3ac3 | 2423 | if (active_only && !new_crtc_state->active) |
aef9dbb8 DV |
2424 | continue; |
2425 | ||
613d2b27 | 2426 | funcs->atomic_flush(crtc, old_crtc_state); |
c2fcd274 DV |
2427 | } |
2428 | } | |
2429 | EXPORT_SYMBOL(drm_atomic_helper_commit_planes); | |
2430 | ||
de28d021 ML |
2431 | /** |
2432 | * drm_atomic_helper_commit_planes_on_crtc - commit plane state for a crtc | |
2433 | * @old_crtc_state: atomic state object with the old crtc state | |
2434 | * | |
2435 | * This function commits the new plane state using the plane and atomic helper | |
2436 | * functions for planes on the specific crtc. It assumes that the atomic state | |
2437 | * has already been pushed into the relevant object state pointers, since this | |
2438 | * step can no longer fail. | |
2439 | * | |
2440 | * This function is useful when plane updates should be done crtc-by-crtc | |
2441 | * instead of one global step like drm_atomic_helper_commit_planes() does. | |
2442 | * | |
2443 | * This function can only be savely used when planes are not allowed to move | |
2444 | * between different CRTCs because this function doesn't handle inter-CRTC | |
2445 | * depencies. Callers need to ensure that either no such depencies exist, | |
2446 | * resolve them through ordering of commit calls or through some other means. | |
2447 | */ | |
2448 | void | |
2449 | drm_atomic_helper_commit_planes_on_crtc(struct drm_crtc_state *old_crtc_state) | |
2450 | { | |
2451 | const struct drm_crtc_helper_funcs *crtc_funcs; | |
2452 | struct drm_crtc *crtc = old_crtc_state->crtc; | |
2453 | struct drm_atomic_state *old_state = old_crtc_state->state; | |
e35a2f9a VS |
2454 | struct drm_crtc_state *new_crtc_state = |
2455 | drm_atomic_get_new_crtc_state(old_state, crtc); | |
de28d021 ML |
2456 | struct drm_plane *plane; |
2457 | unsigned plane_mask; | |
2458 | ||
2459 | plane_mask = old_crtc_state->plane_mask; | |
e35a2f9a | 2460 | plane_mask |= new_crtc_state->plane_mask; |
de28d021 ML |
2461 | |
2462 | crtc_funcs = crtc->helper_private; | |
2463 | if (crtc_funcs && crtc_funcs->atomic_begin) | |
613d2b27 | 2464 | crtc_funcs->atomic_begin(crtc, old_crtc_state); |
de28d021 ML |
2465 | |
2466 | drm_for_each_plane_mask(plane, crtc->dev, plane_mask) { | |
2467 | struct drm_plane_state *old_plane_state = | |
b4d93679 | 2468 | drm_atomic_get_old_plane_state(old_state, plane); |
e35a2f9a VS |
2469 | struct drm_plane_state *new_plane_state = |
2470 | drm_atomic_get_new_plane_state(old_state, plane); | |
de28d021 ML |
2471 | const struct drm_plane_helper_funcs *plane_funcs; |
2472 | ||
2473 | plane_funcs = plane->helper_private; | |
2474 | ||
2475 | if (!old_plane_state || !plane_funcs) | |
2476 | continue; | |
2477 | ||
e35a2f9a VS |
2478 | WARN_ON(new_plane_state->crtc && |
2479 | new_plane_state->crtc != crtc); | |
de28d021 | 2480 | |
e35a2f9a | 2481 | if (drm_atomic_plane_disabling(old_plane_state, new_plane_state) && |
de28d021 ML |
2482 | plane_funcs->atomic_disable) |
2483 | plane_funcs->atomic_disable(plane, old_plane_state); | |
e35a2f9a VS |
2484 | else if (new_plane_state->crtc || |
2485 | drm_atomic_plane_disabling(old_plane_state, new_plane_state)) | |
de28d021 ML |
2486 | plane_funcs->atomic_update(plane, old_plane_state); |
2487 | } | |
2488 | ||
2489 | if (crtc_funcs && crtc_funcs->atomic_flush) | |
613d2b27 | 2490 | crtc_funcs->atomic_flush(crtc, old_crtc_state); |
de28d021 ML |
2491 | } |
2492 | EXPORT_SYMBOL(drm_atomic_helper_commit_planes_on_crtc); | |
2493 | ||
6753ba97 JS |
2494 | /** |
2495 | * drm_atomic_helper_disable_planes_on_crtc - helper to disable CRTC's planes | |
28500291 | 2496 | * @old_crtc_state: atomic state object with the old CRTC state |
6753ba97 JS |
2497 | * @atomic: if set, synchronize with CRTC's atomic_begin/flush hooks |
2498 | * | |
2499 | * Disables all planes associated with the given CRTC. This can be | |
28500291 LY |
2500 | * used for instance in the CRTC helper atomic_disable callback to disable |
2501 | * all planes. | |
6753ba97 JS |
2502 | * |
2503 | * If the atomic-parameter is set the function calls the CRTC's | |
2504 | * atomic_begin hook before and atomic_flush hook after disabling the | |
2505 | * planes. | |
2506 | * | |
2507 | * It is a bug to call this function without having implemented the | |
6806cdf9 | 2508 | * &drm_plane_helper_funcs.atomic_disable plane hook. |
6753ba97 | 2509 | */ |
28500291 LY |
2510 | void |
2511 | drm_atomic_helper_disable_planes_on_crtc(struct drm_crtc_state *old_crtc_state, | |
2512 | bool atomic) | |
6753ba97 | 2513 | { |
28500291 | 2514 | struct drm_crtc *crtc = old_crtc_state->crtc; |
6753ba97 JS |
2515 | const struct drm_crtc_helper_funcs *crtc_funcs = |
2516 | crtc->helper_private; | |
2517 | struct drm_plane *plane; | |
2518 | ||
2519 | if (atomic && crtc_funcs && crtc_funcs->atomic_begin) | |
2520 | crtc_funcs->atomic_begin(crtc, NULL); | |
2521 | ||
28500291 | 2522 | drm_atomic_crtc_state_for_each_plane(plane, old_crtc_state) { |
6753ba97 JS |
2523 | const struct drm_plane_helper_funcs *plane_funcs = |
2524 | plane->helper_private; | |
2525 | ||
28500291 | 2526 | if (!plane_funcs) |
6753ba97 JS |
2527 | continue; |
2528 | ||
2529 | WARN_ON(!plane_funcs->atomic_disable); | |
2530 | if (plane_funcs->atomic_disable) | |
2531 | plane_funcs->atomic_disable(plane, NULL); | |
2532 | } | |
2533 | ||
2534 | if (atomic && crtc_funcs && crtc_funcs->atomic_flush) | |
2535 | crtc_funcs->atomic_flush(crtc, NULL); | |
2536 | } | |
2537 | EXPORT_SYMBOL(drm_atomic_helper_disable_planes_on_crtc); | |
2538 | ||
c2fcd274 DV |
2539 | /** |
2540 | * drm_atomic_helper_cleanup_planes - cleanup plane resources after commit | |
2541 | * @dev: DRM device | |
2542 | * @old_state: atomic state object with old state structures | |
2543 | * | |
2544 | * This function cleans up plane state, specifically framebuffers, from the old | |
2545 | * configuration. Hence the old configuration must be perserved in @old_state to | |
2546 | * be able to call this function. | |
2547 | * | |
2548 | * This function must also be called on the new state when the atomic update | |
2549 | * fails at any point after calling drm_atomic_helper_prepare_planes(). | |
2550 | */ | |
2551 | void drm_atomic_helper_cleanup_planes(struct drm_device *dev, | |
2552 | struct drm_atomic_state *old_state) | |
2553 | { | |
df63b999 | 2554 | struct drm_plane *plane; |
415c3ac3 | 2555 | struct drm_plane_state *old_plane_state, *new_plane_state; |
c2fcd274 DV |
2556 | int i; |
2557 | ||
415c3ac3 | 2558 | for_each_oldnew_plane_in_state(old_state, plane, old_plane_state, new_plane_state, i) { |
b5ceff20 | 2559 | const struct drm_plane_helper_funcs *funcs; |
415c3ac3 ML |
2560 | struct drm_plane_state *plane_state; |
2561 | ||
2562 | /* | |
2563 | * This might be called before swapping when commit is aborted, | |
2564 | * in which case we have to cleanup the new state. | |
2565 | */ | |
2566 | if (old_plane_state == plane->state) | |
2567 | plane_state = new_plane_state; | |
2568 | else | |
2569 | plane_state = old_plane_state; | |
c2fcd274 | 2570 | |
c2fcd274 DV |
2571 | funcs = plane->helper_private; |
2572 | ||
844f9111 ML |
2573 | if (funcs->cleanup_fb) |
2574 | funcs->cleanup_fb(plane, plane_state); | |
c2fcd274 DV |
2575 | } |
2576 | } | |
2577 | EXPORT_SYMBOL(drm_atomic_helper_cleanup_planes); | |
2578 | ||
2579 | /** | |
2580 | * drm_atomic_helper_swap_state - store atomic state into current sw state | |
c2fcd274 | 2581 | * @state: atomic state |
c066d231 | 2582 | * @stall: stall for preceeding commits |
c2fcd274 DV |
2583 | * |
2584 | * This function stores the atomic state into the current state pointers in all | |
2585 | * driver objects. It should be called after all failing steps have been done | |
2586 | * and succeeded, but before the actual hardware state is committed. | |
2587 | * | |
2588 | * For cleanup and error recovery the current state for all changed objects will | |
c066d231 | 2589 | * be swapped into @state. |
c2fcd274 DV |
2590 | * |
2591 | * With that sequence it fits perfectly into the plane prepare/cleanup sequence: | |
2592 | * | |
2593 | * 1. Call drm_atomic_helper_prepare_planes() with the staged atomic state. | |
2594 | * | |
2595 | * 2. Do any other steps that might fail. | |
2596 | * | |
2597 | * 3. Put the staged state into the current state pointers with this function. | |
2598 | * | |
2599 | * 4. Actually commit the hardware state. | |
2600 | * | |
26196f7e | 2601 | * 5. Call drm_atomic_helper_cleanup_planes() with @state, which since step 3 |
c2fcd274 | 2602 | * contains the old state. Also do any other cleanup required with that state. |
a095caa7 DV |
2603 | * |
2604 | * @stall must be set when nonblocking commits for this driver directly access | |
6806cdf9 DV |
2605 | * the &drm_plane.state, &drm_crtc.state or &drm_connector.state pointer. With |
2606 | * the current atomic helpers this is almost always the case, since the helpers | |
a095caa7 | 2607 | * don't pass the right state structures to the callbacks. |
c066d231 ML |
2608 | * |
2609 | * Returns: | |
2610 | * | |
c4bbb735 ML |
2611 | * Returns 0 on success. Can return -ERESTARTSYS when @stall is true and the |
2612 | * waiting for the previous commits has been interrupted. | |
c2fcd274 | 2613 | */ |
c066d231 | 2614 | int drm_atomic_helper_swap_state(struct drm_atomic_state *state, |
5e84c269 | 2615 | bool stall) |
c2fcd274 | 2616 | { |
c4bbb735 | 2617 | int i, ret; |
be9174a4 | 2618 | struct drm_connector *connector; |
415c3ac3 | 2619 | struct drm_connector_state *old_conn_state, *new_conn_state; |
be9174a4 | 2620 | struct drm_crtc *crtc; |
415c3ac3 | 2621 | struct drm_crtc_state *old_crtc_state, *new_crtc_state; |
be9174a4 | 2622 | struct drm_plane *plane; |
415c3ac3 | 2623 | struct drm_plane_state *old_plane_state, *new_plane_state; |
a095caa7 | 2624 | struct drm_crtc_commit *commit; |
a4370c77 VS |
2625 | struct drm_private_obj *obj; |
2626 | struct drm_private_state *old_obj_state, *new_obj_state; | |
a095caa7 DV |
2627 | |
2628 | if (stall) { | |
21a01abb ML |
2629 | /* |
2630 | * We have to stall for hw_done here before | |
2631 | * drm_atomic_helper_wait_for_dependencies() because flip | |
2632 | * depth > 1 is not yet supported by all drivers. As long as | |
2633 | * obj->state is directly dereferenced anywhere in the drivers | |
2634 | * atomic_commit_tail function, then it's unsafe to swap state | |
2635 | * before drm_atomic_helper_commit_hw_done() is called. | |
2636 | */ | |
2637 | ||
163bcc2c ML |
2638 | for_each_old_crtc_in_state(state, crtc, old_crtc_state, i) { |
2639 | commit = old_crtc_state->commit; | |
a095caa7 DV |
2640 | |
2641 | if (!commit) | |
2642 | continue; | |
2643 | ||
c4bbb735 | 2644 | ret = wait_for_completion_interruptible(&commit->hw_done); |
c4bbb735 ML |
2645 | if (ret) |
2646 | return ret; | |
a095caa7 | 2647 | } |
21a01abb ML |
2648 | |
2649 | for_each_old_connector_in_state(state, connector, old_conn_state, i) { | |
2650 | commit = old_conn_state->commit; | |
a095caa7 DV |
2651 | |
2652 | if (!commit) | |
2653 | continue; | |
2654 | ||
c4bbb735 | 2655 | ret = wait_for_completion_interruptible(&commit->hw_done); |
21a01abb ML |
2656 | if (ret) |
2657 | return ret; | |
2658 | } | |
c4bbb735 | 2659 | |
21a01abb ML |
2660 | for_each_old_plane_in_state(state, plane, old_plane_state, i) { |
2661 | commit = old_plane_state->commit; | |
2662 | ||
2663 | if (!commit) | |
2664 | continue; | |
2665 | ||
2666 | ret = wait_for_completion_interruptible(&commit->hw_done); | |
c4bbb735 ML |
2667 | if (ret) |
2668 | return ret; | |
a095caa7 DV |
2669 | } |
2670 | } | |
c2fcd274 | 2671 | |
415c3ac3 | 2672 | for_each_oldnew_connector_in_state(state, connector, old_conn_state, new_conn_state, i) { |
581e49fe ML |
2673 | WARN_ON(connector->state != old_conn_state); |
2674 | ||
415c3ac3 ML |
2675 | old_conn_state->state = state; |
2676 | new_conn_state->state = NULL; | |
2677 | ||
2678 | state->connectors[i].state = old_conn_state; | |
2679 | connector->state = new_conn_state; | |
c2fcd274 DV |
2680 | } |
2681 | ||
415c3ac3 | 2682 | for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) { |
581e49fe ML |
2683 | WARN_ON(crtc->state != old_crtc_state); |
2684 | ||
415c3ac3 ML |
2685 | old_crtc_state->state = state; |
2686 | new_crtc_state->state = NULL; | |
2687 | ||
2688 | state->crtcs[i].state = old_crtc_state; | |
2689 | crtc->state = new_crtc_state; | |
a095caa7 | 2690 | |
163bcc2c | 2691 | if (new_crtc_state->commit) { |
a095caa7 | 2692 | spin_lock(&crtc->commit_lock); |
163bcc2c | 2693 | list_add(&new_crtc_state->commit->commit_entry, |
a095caa7 DV |
2694 | &crtc->commit_list); |
2695 | spin_unlock(&crtc->commit_lock); | |
2696 | ||
163bcc2c | 2697 | new_crtc_state->commit->event = NULL; |
a095caa7 | 2698 | } |
c2fcd274 DV |
2699 | } |
2700 | ||
415c3ac3 | 2701 | for_each_oldnew_plane_in_state(state, plane, old_plane_state, new_plane_state, i) { |
581e49fe ML |
2702 | WARN_ON(plane->state != old_plane_state); |
2703 | ||
415c3ac3 ML |
2704 | old_plane_state->state = state; |
2705 | new_plane_state->state = NULL; | |
2706 | ||
2707 | state->planes[i].state = old_plane_state; | |
2708 | plane->state = new_plane_state; | |
c2fcd274 | 2709 | } |
b430c27a | 2710 | |
a4370c77 VS |
2711 | for_each_oldnew_private_obj_in_state(state, obj, old_obj_state, new_obj_state, i) { |
2712 | WARN_ON(obj->state != old_obj_state); | |
2713 | ||
2714 | old_obj_state->state = state; | |
2715 | new_obj_state->state = NULL; | |
2716 | ||
2717 | state->private_objs[i].state = old_obj_state; | |
2718 | obj->state = new_obj_state; | |
2719 | } | |
c066d231 ML |
2720 | |
2721 | return 0; | |
c2fcd274 DV |
2722 | } |
2723 | EXPORT_SYMBOL(drm_atomic_helper_swap_state); | |
042652ed DV |
2724 | |
2725 | /** | |
2726 | * drm_atomic_helper_update_plane - Helper for primary plane update using atomic | |
2727 | * @plane: plane object to update | |
2728 | * @crtc: owning CRTC of owning plane | |
2729 | * @fb: framebuffer to flip onto plane | |
2730 | * @crtc_x: x offset of primary plane on crtc | |
2731 | * @crtc_y: y offset of primary plane on crtc | |
2732 | * @crtc_w: width of primary plane rectangle on crtc | |
2733 | * @crtc_h: height of primary plane rectangle on crtc | |
2734 | * @src_x: x offset of @fb for panning | |
2735 | * @src_y: y offset of @fb for panning | |
2736 | * @src_w: width of source rectangle in @fb | |
2737 | * @src_h: height of source rectangle in @fb | |
34a2ab5e | 2738 | * @ctx: lock acquire context |
042652ed DV |
2739 | * |
2740 | * Provides a default plane update handler using the atomic driver interface. | |
2741 | * | |
2742 | * RETURNS: | |
2743 | * Zero on success, error code on failure | |
2744 | */ | |
2745 | int drm_atomic_helper_update_plane(struct drm_plane *plane, | |
2746 | struct drm_crtc *crtc, | |
2747 | struct drm_framebuffer *fb, | |
2748 | int crtc_x, int crtc_y, | |
2749 | unsigned int crtc_w, unsigned int crtc_h, | |
2750 | uint32_t src_x, uint32_t src_y, | |
34a2ab5e DV |
2751 | uint32_t src_w, uint32_t src_h, |
2752 | struct drm_modeset_acquire_ctx *ctx) | |
042652ed DV |
2753 | { |
2754 | struct drm_atomic_state *state; | |
2755 | struct drm_plane_state *plane_state; | |
2756 | int ret = 0; | |
2757 | ||
2758 | state = drm_atomic_state_alloc(plane->dev); | |
2759 | if (!state) | |
2760 | return -ENOMEM; | |
2761 | ||
d26f96c7 | 2762 | state->acquire_ctx = ctx; |
042652ed DV |
2763 | plane_state = drm_atomic_get_plane_state(state, plane); |
2764 | if (IS_ERR(plane_state)) { | |
2765 | ret = PTR_ERR(plane_state); | |
2766 | goto fail; | |
2767 | } | |
2768 | ||
07cc0ef6 | 2769 | ret = drm_atomic_set_crtc_for_plane(plane_state, crtc); |
042652ed DV |
2770 | if (ret != 0) |
2771 | goto fail; | |
321ebf04 | 2772 | drm_atomic_set_fb_for_plane(plane_state, fb); |
042652ed DV |
2773 | plane_state->crtc_x = crtc_x; |
2774 | plane_state->crtc_y = crtc_y; | |
042652ed | 2775 | plane_state->crtc_w = crtc_w; |
02e6f379 | 2776 | plane_state->crtc_h = crtc_h; |
042652ed DV |
2777 | plane_state->src_x = src_x; |
2778 | plane_state->src_y = src_y; | |
042652ed | 2779 | plane_state->src_w = src_w; |
02e6f379 | 2780 | plane_state->src_h = src_h; |
042652ed | 2781 | |
3671c580 DV |
2782 | if (plane == crtc->cursor) |
2783 | state->legacy_cursor_update = true; | |
2784 | ||
042652ed | 2785 | ret = drm_atomic_commit(state); |
042652ed | 2786 | fail: |
0853695c | 2787 | drm_atomic_state_put(state); |
042652ed | 2788 | return ret; |
042652ed DV |
2789 | } |
2790 | EXPORT_SYMBOL(drm_atomic_helper_update_plane); | |
2791 | ||
2792 | /** | |
2793 | * drm_atomic_helper_disable_plane - Helper for primary plane disable using * atomic | |
2794 | * @plane: plane to disable | |
19315294 | 2795 | * @ctx: lock acquire context |
042652ed DV |
2796 | * |
2797 | * Provides a default plane disable handler using the atomic driver interface. | |
2798 | * | |
2799 | * RETURNS: | |
2800 | * Zero on success, error code on failure | |
2801 | */ | |
19315294 DV |
2802 | int drm_atomic_helper_disable_plane(struct drm_plane *plane, |
2803 | struct drm_modeset_acquire_ctx *ctx) | |
042652ed DV |
2804 | { |
2805 | struct drm_atomic_state *state; | |
2806 | struct drm_plane_state *plane_state; | |
2807 | int ret = 0; | |
2808 | ||
2809 | state = drm_atomic_state_alloc(plane->dev); | |
2810 | if (!state) | |
2811 | return -ENOMEM; | |
2812 | ||
d26f96c7 | 2813 | state->acquire_ctx = ctx; |
042652ed DV |
2814 | plane_state = drm_atomic_get_plane_state(state, plane); |
2815 | if (IS_ERR(plane_state)) { | |
2816 | ret = PTR_ERR(plane_state); | |
2817 | goto fail; | |
2818 | } | |
2819 | ||
a36c027d | 2820 | if (plane_state->crtc && plane_state->crtc->cursor == plane) |
24e79d0d ML |
2821 | plane_state->state->legacy_cursor_update = true; |
2822 | ||
bbb1e524 | 2823 | ret = __drm_atomic_helper_disable_plane(plane, plane_state); |
042652ed DV |
2824 | if (ret != 0) |
2825 | goto fail; | |
f02ad907 | 2826 | |
042652ed | 2827 | ret = drm_atomic_commit(state); |
042652ed | 2828 | fail: |
0853695c | 2829 | drm_atomic_state_put(state); |
042652ed | 2830 | return ret; |
042652ed DV |
2831 | } |
2832 | EXPORT_SYMBOL(drm_atomic_helper_disable_plane); | |
2833 | ||
bbb1e524 RC |
2834 | /* just used from fb-helper and atomic-helper: */ |
2835 | int __drm_atomic_helper_disable_plane(struct drm_plane *plane, | |
2836 | struct drm_plane_state *plane_state) | |
2837 | { | |
2838 | int ret; | |
2839 | ||
2840 | ret = drm_atomic_set_crtc_for_plane(plane_state, NULL); | |
2841 | if (ret != 0) | |
2842 | return ret; | |
2843 | ||
2844 | drm_atomic_set_fb_for_plane(plane_state, NULL); | |
2845 | plane_state->crtc_x = 0; | |
2846 | plane_state->crtc_y = 0; | |
bbb1e524 | 2847 | plane_state->crtc_w = 0; |
02e6f379 | 2848 | plane_state->crtc_h = 0; |
bbb1e524 RC |
2849 | plane_state->src_x = 0; |
2850 | plane_state->src_y = 0; | |
bbb1e524 | 2851 | plane_state->src_w = 0; |
02e6f379 | 2852 | plane_state->src_h = 0; |
bbb1e524 | 2853 | |
bbb1e524 RC |
2854 | return 0; |
2855 | } | |
2856 | ||
042652ed DV |
2857 | static int update_output_state(struct drm_atomic_state *state, |
2858 | struct drm_mode_set *set) | |
2859 | { | |
2860 | struct drm_device *dev = set->crtc->dev; | |
df63b999 | 2861 | struct drm_crtc *crtc; |
415c3ac3 | 2862 | struct drm_crtc_state *new_crtc_state; |
df63b999 | 2863 | struct drm_connector *connector; |
415c3ac3 | 2864 | struct drm_connector_state *new_conn_state; |
6ab520a2 | 2865 | int ret, i; |
042652ed DV |
2866 | |
2867 | ret = drm_modeset_lock(&dev->mode_config.connection_mutex, | |
2868 | state->acquire_ctx); | |
2869 | if (ret) | |
2870 | return ret; | |
2871 | ||
6ab520a2 ML |
2872 | /* First disable all connectors on the target crtc. */ |
2873 | ret = drm_atomic_add_affected_connectors(state, set->crtc); | |
2874 | if (ret) | |
2875 | return ret; | |
042652ed | 2876 | |
415c3ac3 ML |
2877 | for_each_new_connector_in_state(state, connector, new_conn_state, i) { |
2878 | if (new_conn_state->crtc == set->crtc) { | |
2879 | ret = drm_atomic_set_crtc_for_connector(new_conn_state, | |
042652ed DV |
2880 | NULL); |
2881 | if (ret) | |
2882 | return ret; | |
415c3ac3 | 2883 | |
40ee6fbe | 2884 | /* Make sure legacy setCrtc always re-trains */ |
415c3ac3 | 2885 | new_conn_state->link_status = DRM_LINK_STATUS_GOOD; |
042652ed | 2886 | } |
6ab520a2 | 2887 | } |
042652ed | 2888 | |
6ab520a2 ML |
2889 | /* Then set all connectors from set->connectors on the target crtc */ |
2890 | for (i = 0; i < set->num_connectors; i++) { | |
415c3ac3 | 2891 | new_conn_state = drm_atomic_get_connector_state(state, |
6ab520a2 | 2892 | set->connectors[i]); |
415c3ac3 ML |
2893 | if (IS_ERR(new_conn_state)) |
2894 | return PTR_ERR(new_conn_state); | |
6ab520a2 | 2895 | |
415c3ac3 | 2896 | ret = drm_atomic_set_crtc_for_connector(new_conn_state, |
6ab520a2 ML |
2897 | set->crtc); |
2898 | if (ret) | |
2899 | return ret; | |
042652ed DV |
2900 | } |
2901 | ||
415c3ac3 | 2902 | for_each_new_crtc_in_state(state, crtc, new_crtc_state, i) { |
042652ed DV |
2903 | /* Don't update ->enable for the CRTC in the set_config request, |
2904 | * since a mismatch would indicate a bug in the upper layers. | |
2905 | * The actual modeset code later on will catch any | |
2906 | * inconsistencies here. */ | |
2907 | if (crtc == set->crtc) | |
2908 | continue; | |
2909 | ||
415c3ac3 ML |
2910 | if (!new_crtc_state->connector_mask) { |
2911 | ret = drm_atomic_set_mode_prop_for_crtc(new_crtc_state, | |
c30f55a7 LP |
2912 | NULL); |
2913 | if (ret < 0) | |
2914 | return ret; | |
2915 | ||
415c3ac3 | 2916 | new_crtc_state->active = false; |
c30f55a7 | 2917 | } |
042652ed DV |
2918 | } |
2919 | ||
2920 | return 0; | |
2921 | } | |
2922 | ||
2923 | /** | |
2924 | * drm_atomic_helper_set_config - set a new config from userspace | |
2925 | * @set: mode set configuration | |
a4eff9aa | 2926 | * @ctx: lock acquisition context |
042652ed DV |
2927 | * |
2928 | * Provides a default crtc set_config handler using the atomic driver interface. | |
2929 | * | |
40ee6fbe MN |
2930 | * NOTE: For backwards compatibility with old userspace this automatically |
2931 | * resets the "link-status" property to GOOD, to force any link | |
2932 | * re-training. The SETCRTC ioctl does not define whether an update does | |
2933 | * need a full modeset or just a plane update, hence we're allowed to do | |
97e14fbe | 2934 | * that. See also drm_connector_set_link_status_property(). |
40ee6fbe | 2935 | * |
042652ed DV |
2936 | * Returns: |
2937 | * Returns 0 on success, negative errno numbers on failure. | |
2938 | */ | |
a4eff9aa DV |
2939 | int drm_atomic_helper_set_config(struct drm_mode_set *set, |
2940 | struct drm_modeset_acquire_ctx *ctx) | |
042652ed DV |
2941 | { |
2942 | struct drm_atomic_state *state; | |
2943 | struct drm_crtc *crtc = set->crtc; | |
042652ed DV |
2944 | int ret = 0; |
2945 | ||
2946 | state = drm_atomic_state_alloc(crtc->dev); | |
2947 | if (!state) | |
2948 | return -ENOMEM; | |
2949 | ||
38b6441e | 2950 | state->acquire_ctx = ctx; |
bbb1e524 RC |
2951 | ret = __drm_atomic_helper_set_config(set, state); |
2952 | if (ret != 0) | |
1fa4da04 | 2953 | goto fail; |
042652ed | 2954 | |
44596b8c ML |
2955 | ret = handle_conflicting_encoders(state, true); |
2956 | if (ret) | |
2957 | return ret; | |
2958 | ||
bbb1e524 | 2959 | ret = drm_atomic_commit(state); |
bbb1e524 | 2960 | |
1fa4da04 | 2961 | fail: |
0853695c | 2962 | drm_atomic_state_put(state); |
bbb1e524 | 2963 | return ret; |
bbb1e524 RC |
2964 | } |
2965 | EXPORT_SYMBOL(drm_atomic_helper_set_config); | |
2966 | ||
2967 | /* just used from fb-helper and atomic-helper: */ | |
2968 | int __drm_atomic_helper_set_config(struct drm_mode_set *set, | |
2969 | struct drm_atomic_state *state) | |
2970 | { | |
2971 | struct drm_crtc_state *crtc_state; | |
2972 | struct drm_plane_state *primary_state; | |
2973 | struct drm_crtc *crtc = set->crtc; | |
83926117 | 2974 | int hdisplay, vdisplay; |
bbb1e524 RC |
2975 | int ret; |
2976 | ||
2977 | crtc_state = drm_atomic_get_crtc_state(state, crtc); | |
2978 | if (IS_ERR(crtc_state)) | |
2979 | return PTR_ERR(crtc_state); | |
2980 | ||
2981 | primary_state = drm_atomic_get_plane_state(state, crtc->primary); | |
2982 | if (IS_ERR(primary_state)) | |
2983 | return PTR_ERR(primary_state); | |
e5b5341c | 2984 | |
042652ed DV |
2985 | if (!set->mode) { |
2986 | WARN_ON(set->fb); | |
2987 | WARN_ON(set->num_connectors); | |
2988 | ||
819364da DS |
2989 | ret = drm_atomic_set_mode_for_crtc(crtc_state, NULL); |
2990 | if (ret != 0) | |
bbb1e524 | 2991 | return ret; |
819364da | 2992 | |
eab3bbef | 2993 | crtc_state->active = false; |
e5b5341c | 2994 | |
07cc0ef6 | 2995 | ret = drm_atomic_set_crtc_for_plane(primary_state, NULL); |
e5b5341c | 2996 | if (ret != 0) |
bbb1e524 | 2997 | return ret; |
e5b5341c RC |
2998 | |
2999 | drm_atomic_set_fb_for_plane(primary_state, NULL); | |
3000 | ||
042652ed DV |
3001 | goto commit; |
3002 | } | |
3003 | ||
3004 | WARN_ON(!set->fb); | |
3005 | WARN_ON(!set->num_connectors); | |
3006 | ||
819364da DS |
3007 | ret = drm_atomic_set_mode_for_crtc(crtc_state, set->mode); |
3008 | if (ret != 0) | |
bbb1e524 | 3009 | return ret; |
819364da | 3010 | |
eab3bbef | 3011 | crtc_state->active = true; |
042652ed | 3012 | |
07cc0ef6 | 3013 | ret = drm_atomic_set_crtc_for_plane(primary_state, crtc); |
042652ed | 3014 | if (ret != 0) |
bbb1e524 RC |
3015 | return ret; |
3016 | ||
196cd5d3 | 3017 | drm_mode_get_hv_timing(set->mode, &hdisplay, &vdisplay); |
83926117 | 3018 | |
321ebf04 | 3019 | drm_atomic_set_fb_for_plane(primary_state, set->fb); |
042652ed DV |
3020 | primary_state->crtc_x = 0; |
3021 | primary_state->crtc_y = 0; | |
83926117 | 3022 | primary_state->crtc_w = hdisplay; |
02e6f379 | 3023 | primary_state->crtc_h = vdisplay; |
042652ed DV |
3024 | primary_state->src_x = set->x << 16; |
3025 | primary_state->src_y = set->y << 16; | |
bd2ef25d | 3026 | if (drm_rotation_90_or_270(primary_state->rotation)) { |
83926117 | 3027 | primary_state->src_w = vdisplay << 16; |
02e6f379 | 3028 | primary_state->src_h = hdisplay << 16; |
41121248 | 3029 | } else { |
83926117 | 3030 | primary_state->src_w = hdisplay << 16; |
02e6f379 | 3031 | primary_state->src_h = vdisplay << 16; |
41121248 | 3032 | } |
042652ed DV |
3033 | |
3034 | commit: | |
3035 | ret = update_output_state(state, set); | |
3036 | if (ret) | |
bbb1e524 | 3037 | return ret; |
042652ed | 3038 | |
042652ed | 3039 | return 0; |
042652ed | 3040 | } |
042652ed | 3041 | |
5e9cfeba VS |
3042 | static int __drm_atomic_helper_disable_all(struct drm_device *dev, |
3043 | struct drm_modeset_acquire_ctx *ctx, | |
3044 | bool clean_old_fbs) | |
14942760 TR |
3045 | { |
3046 | struct drm_atomic_state *state; | |
9b2104f4 | 3047 | struct drm_connector_state *conn_state; |
14942760 | 3048 | struct drm_connector *conn; |
9b2104f4 ML |
3049 | struct drm_plane_state *plane_state; |
3050 | struct drm_plane *plane; | |
3051 | struct drm_crtc_state *crtc_state; | |
3052 | struct drm_crtc *crtc; | |
3053 | int ret, i; | |
14942760 TR |
3054 | |
3055 | state = drm_atomic_state_alloc(dev); | |
3056 | if (!state) | |
3057 | return -ENOMEM; | |
3058 | ||
3059 | state->acquire_ctx = ctx; | |
3060 | ||
9b2104f4 | 3061 | drm_for_each_crtc(crtc, dev) { |
14942760 TR |
3062 | crtc_state = drm_atomic_get_crtc_state(state, crtc); |
3063 | if (IS_ERR(crtc_state)) { | |
9b2104f4 | 3064 | ret = PTR_ERR(crtc_state); |
14942760 TR |
3065 | goto free; |
3066 | } | |
3067 | ||
3068 | crtc_state->active = false; | |
9b2104f4 ML |
3069 | |
3070 | ret = drm_atomic_set_mode_prop_for_crtc(crtc_state, NULL); | |
3071 | if (ret < 0) | |
3072 | goto free; | |
3073 | ||
3074 | ret = drm_atomic_add_affected_planes(state, crtc); | |
3075 | if (ret < 0) | |
3076 | goto free; | |
3077 | ||
3078 | ret = drm_atomic_add_affected_connectors(state, crtc); | |
3079 | if (ret < 0) | |
3080 | goto free; | |
3081 | } | |
3082 | ||
dfb8bb3b | 3083 | for_each_new_connector_in_state(state, conn, conn_state, i) { |
9b2104f4 ML |
3084 | ret = drm_atomic_set_crtc_for_connector(conn_state, NULL); |
3085 | if (ret < 0) | |
3086 | goto free; | |
3087 | } | |
3088 | ||
dfb8bb3b | 3089 | for_each_new_plane_in_state(state, plane, plane_state, i) { |
9b2104f4 ML |
3090 | ret = drm_atomic_set_crtc_for_plane(plane_state, NULL); |
3091 | if (ret < 0) | |
3092 | goto free; | |
3093 | ||
3094 | drm_atomic_set_fb_for_plane(plane_state, NULL); | |
14942760 TR |
3095 | } |
3096 | ||
9b2104f4 | 3097 | ret = drm_atomic_commit(state); |
14942760 | 3098 | free: |
0853695c | 3099 | drm_atomic_state_put(state); |
9b2104f4 | 3100 | return ret; |
14942760 | 3101 | } |
9b2104f4 | 3102 | |
5e9cfeba VS |
3103 | /** |
3104 | * drm_atomic_helper_disable_all - disable all currently active outputs | |
3105 | * @dev: DRM device | |
3106 | * @ctx: lock acquisition context | |
3107 | * | |
3108 | * Loops through all connectors, finding those that aren't turned off and then | |
3109 | * turns them off by setting their DPMS mode to OFF and deactivating the CRTC | |
3110 | * that they are connected to. | |
3111 | * | |
3112 | * This is used for example in suspend/resume to disable all currently active | |
3113 | * functions when suspending. If you just want to shut down everything at e.g. | |
3114 | * driver unload, look at drm_atomic_helper_shutdown(). | |
3115 | * | |
3116 | * Note that if callers haven't already acquired all modeset locks this might | |
3117 | * return -EDEADLK, which must be handled by calling drm_modeset_backoff(). | |
3118 | * | |
3119 | * Returns: | |
3120 | * 0 on success or a negative error code on failure. | |
3121 | * | |
3122 | * See also: | |
3123 | * drm_atomic_helper_suspend(), drm_atomic_helper_resume() and | |
3124 | * drm_atomic_helper_shutdown(). | |
3125 | */ | |
3126 | int drm_atomic_helper_disable_all(struct drm_device *dev, | |
3127 | struct drm_modeset_acquire_ctx *ctx) | |
3128 | { | |
3129 | return __drm_atomic_helper_disable_all(dev, ctx, false); | |
3130 | } | |
14942760 TR |
3131 | EXPORT_SYMBOL(drm_atomic_helper_disable_all); |
3132 | ||
18dddadc DV |
3133 | /** |
3134 | * drm_atomic_helper_shutdown - shutdown all CRTC | |
3135 | * @dev: DRM device | |
3136 | * | |
3137 | * This shuts down all CRTC, which is useful for driver unloading. Shutdown on | |
3138 | * suspend should instead be handled with drm_atomic_helper_suspend(), since | |
3139 | * that also takes a snapshot of the modeset state to be restored on resume. | |
3140 | * | |
3141 | * This is just a convenience wrapper around drm_atomic_helper_disable_all(), | |
3142 | * and it is the atomic version of drm_crtc_force_disable_all(). | |
3143 | */ | |
3144 | void drm_atomic_helper_shutdown(struct drm_device *dev) | |
3145 | { | |
3146 | struct drm_modeset_acquire_ctx ctx; | |
3147 | int ret; | |
3148 | ||
b7ea04d2 | 3149 | DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, 0, ret); |
18dddadc | 3150 | |
b7ea04d2 | 3151 | ret = __drm_atomic_helper_disable_all(dev, &ctx, true); |
18dddadc DV |
3152 | if (ret) |
3153 | DRM_ERROR("Disabling all crtc's during unload failed with %i\n", ret); | |
3154 | ||
b7ea04d2 | 3155 | DRM_MODESET_LOCK_ALL_END(ctx, ret); |
18dddadc DV |
3156 | } |
3157 | EXPORT_SYMBOL(drm_atomic_helper_shutdown); | |
3158 | ||
1d8224e7 DV |
3159 | /** |
3160 | * drm_atomic_helper_duplicate_state - duplicate an atomic state object | |
3161 | * @dev: DRM device | |
3162 | * @ctx: lock acquisition context | |
3163 | * | |
3164 | * Makes a copy of the current atomic state by looping over all objects and | |
3165 | * duplicating their respective states. This is used for example by suspend/ | |
3166 | * resume support code to save the state prior to suspend such that it can | |
3167 | * be restored upon resume. | |
3168 | * | |
3169 | * Note that this treats atomic state as persistent between save and restore. | |
3170 | * Drivers must make sure that this is possible and won't result in confusion | |
3171 | * or erroneous behaviour. | |
3172 | * | |
3173 | * Note that if callers haven't already acquired all modeset locks this might | |
3174 | * return -EDEADLK, which must be handled by calling drm_modeset_backoff(). | |
3175 | * | |
3176 | * Returns: | |
3177 | * A pointer to the copy of the atomic state object on success or an | |
3178 | * ERR_PTR()-encoded error code on failure. | |
3179 | * | |
3180 | * See also: | |
3181 | * drm_atomic_helper_suspend(), drm_atomic_helper_resume() | |
3182 | */ | |
3183 | struct drm_atomic_state * | |
3184 | drm_atomic_helper_duplicate_state(struct drm_device *dev, | |
3185 | struct drm_modeset_acquire_ctx *ctx) | |
3186 | { | |
3187 | struct drm_atomic_state *state; | |
3188 | struct drm_connector *conn; | |
3189 | struct drm_connector_list_iter conn_iter; | |
3190 | struct drm_plane *plane; | |
3191 | struct drm_crtc *crtc; | |
3192 | int err = 0; | |
3193 | ||
3194 | state = drm_atomic_state_alloc(dev); | |
3195 | if (!state) | |
3196 | return ERR_PTR(-ENOMEM); | |
3197 | ||
3198 | state->acquire_ctx = ctx; | |
022debad | 3199 | state->duplicated = true; |
1d8224e7 DV |
3200 | |
3201 | drm_for_each_crtc(crtc, dev) { | |
3202 | struct drm_crtc_state *crtc_state; | |
3203 | ||
3204 | crtc_state = drm_atomic_get_crtc_state(state, crtc); | |
3205 | if (IS_ERR(crtc_state)) { | |
3206 | err = PTR_ERR(crtc_state); | |
3207 | goto free; | |
3208 | } | |
3209 | } | |
3210 | ||
3211 | drm_for_each_plane(plane, dev) { | |
3212 | struct drm_plane_state *plane_state; | |
3213 | ||
3214 | plane_state = drm_atomic_get_plane_state(state, plane); | |
3215 | if (IS_ERR(plane_state)) { | |
3216 | err = PTR_ERR(plane_state); | |
3217 | goto free; | |
3218 | } | |
3219 | } | |
3220 | ||
3221 | drm_connector_list_iter_begin(dev, &conn_iter); | |
3222 | drm_for_each_connector_iter(conn, &conn_iter) { | |
3223 | struct drm_connector_state *conn_state; | |
3224 | ||
3225 | conn_state = drm_atomic_get_connector_state(state, conn); | |
3226 | if (IS_ERR(conn_state)) { | |
3227 | err = PTR_ERR(conn_state); | |
3228 | drm_connector_list_iter_end(&conn_iter); | |
3229 | goto free; | |
3230 | } | |
3231 | } | |
3232 | drm_connector_list_iter_end(&conn_iter); | |
3233 | ||
3234 | /* clear the acquire context so that it isn't accidentally reused */ | |
3235 | state->acquire_ctx = NULL; | |
3236 | ||
3237 | free: | |
3238 | if (err < 0) { | |
3239 | drm_atomic_state_put(state); | |
3240 | state = ERR_PTR(err); | |
3241 | } | |
3242 | ||
3243 | return state; | |
3244 | } | |
3245 | EXPORT_SYMBOL(drm_atomic_helper_duplicate_state); | |
3246 | ||
14942760 TR |
3247 | /** |
3248 | * drm_atomic_helper_suspend - subsystem-level suspend helper | |
3249 | * @dev: DRM device | |
3250 | * | |
3251 | * Duplicates the current atomic state, disables all active outputs and then | |
3252 | * returns a pointer to the original atomic state to the caller. Drivers can | |
3253 | * pass this pointer to the drm_atomic_helper_resume() helper upon resume to | |
3254 | * restore the output configuration that was active at the time the system | |
3255 | * entered suspend. | |
3256 | * | |
3257 | * Note that it is potentially unsafe to use this. The atomic state object | |
3258 | * returned by this function is assumed to be persistent. Drivers must ensure | |
3259 | * that this holds true. Before calling this function, drivers must make sure | |
3260 | * to suspend fbdev emulation so that nothing can be using the device. | |
3261 | * | |
3262 | * Returns: | |
3263 | * A pointer to a copy of the state before suspend on success or an ERR_PTR()- | |
3264 | * encoded error code on failure. Drivers should store the returned atomic | |
3265 | * state object and pass it to the drm_atomic_helper_resume() helper upon | |
3266 | * resume. | |
3267 | * | |
3268 | * See also: | |
3269 | * drm_atomic_helper_duplicate_state(), drm_atomic_helper_disable_all(), | |
581e49fe | 3270 | * drm_atomic_helper_resume(), drm_atomic_helper_commit_duplicated_state() |
14942760 TR |
3271 | */ |
3272 | struct drm_atomic_state *drm_atomic_helper_suspend(struct drm_device *dev) | |
3273 | { | |
3274 | struct drm_modeset_acquire_ctx ctx; | |
3275 | struct drm_atomic_state *state; | |
3276 | int err; | |
3277 | ||
615aa3d9 SP |
3278 | /* This can never be returned, but it makes the compiler happy */ |
3279 | state = ERR_PTR(-EINVAL); | |
14942760 | 3280 | |
b7ea04d2 | 3281 | DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, 0, err); |
14942760 TR |
3282 | |
3283 | state = drm_atomic_helper_duplicate_state(dev, &ctx); | |
3284 | if (IS_ERR(state)) | |
3285 | goto unlock; | |
3286 | ||
3287 | err = drm_atomic_helper_disable_all(dev, &ctx); | |
3288 | if (err < 0) { | |
0853695c | 3289 | drm_atomic_state_put(state); |
14942760 TR |
3290 | state = ERR_PTR(err); |
3291 | goto unlock; | |
3292 | } | |
3293 | ||
3294 | unlock: | |
b7ea04d2 SP |
3295 | DRM_MODESET_LOCK_ALL_END(ctx, err); |
3296 | if (err) | |
3297 | return ERR_PTR(err); | |
14942760 | 3298 | |
14942760 TR |
3299 | return state; |
3300 | } | |
3301 | EXPORT_SYMBOL(drm_atomic_helper_suspend); | |
3302 | ||
581e49fe ML |
3303 | /** |
3304 | * drm_atomic_helper_commit_duplicated_state - commit duplicated state | |
3305 | * @state: duplicated atomic state to commit | |
3306 | * @ctx: pointer to acquire_ctx to use for commit. | |
3307 | * | |
3308 | * The state returned by drm_atomic_helper_duplicate_state() and | |
3309 | * drm_atomic_helper_suspend() is partially invalid, and needs to | |
3310 | * be fixed up before commit. | |
3311 | * | |
3312 | * Returns: | |
3313 | * 0 on success or a negative error code on failure. | |
3314 | * | |
3315 | * See also: | |
3316 | * drm_atomic_helper_suspend() | |
3317 | */ | |
3318 | int drm_atomic_helper_commit_duplicated_state(struct drm_atomic_state *state, | |
3319 | struct drm_modeset_acquire_ctx *ctx) | |
3320 | { | |
aa394b0d | 3321 | int i, ret; |
581e49fe | 3322 | struct drm_plane *plane; |
415c3ac3 | 3323 | struct drm_plane_state *new_plane_state; |
581e49fe | 3324 | struct drm_connector *connector; |
415c3ac3 | 3325 | struct drm_connector_state *new_conn_state; |
581e49fe | 3326 | struct drm_crtc *crtc; |
415c3ac3 | 3327 | struct drm_crtc_state *new_crtc_state; |
581e49fe ML |
3328 | |
3329 | state->acquire_ctx = ctx; | |
3330 | ||
e00fb856 | 3331 | for_each_new_plane_in_state(state, plane, new_plane_state, i) |
581e49fe ML |
3332 | state->planes[i].old_state = plane->state; |
3333 | ||
415c3ac3 | 3334 | for_each_new_crtc_in_state(state, crtc, new_crtc_state, i) |
581e49fe ML |
3335 | state->crtcs[i].old_state = crtc->state; |
3336 | ||
415c3ac3 | 3337 | for_each_new_connector_in_state(state, connector, new_conn_state, i) |
581e49fe ML |
3338 | state->connectors[i].old_state = connector->state; |
3339 | ||
aa394b0d SP |
3340 | ret = drm_atomic_commit(state); |
3341 | ||
3342 | state->acquire_ctx = NULL; | |
3343 | ||
3344 | return ret; | |
581e49fe ML |
3345 | } |
3346 | EXPORT_SYMBOL(drm_atomic_helper_commit_duplicated_state); | |
3347 | ||
14942760 TR |
3348 | /** |
3349 | * drm_atomic_helper_resume - subsystem-level resume helper | |
3350 | * @dev: DRM device | |
3351 | * @state: atomic state to resume to | |
3352 | * | |
3353 | * Calls drm_mode_config_reset() to synchronize hardware and software states, | |
3354 | * grabs all modeset locks and commits the atomic state object. This can be | |
3355 | * used in conjunction with the drm_atomic_helper_suspend() helper to | |
3356 | * implement suspend/resume for drivers that support atomic mode-setting. | |
3357 | * | |
3358 | * Returns: | |
3359 | * 0 on success or a negative error code on failure. | |
3360 | * | |
3361 | * See also: | |
3362 | * drm_atomic_helper_suspend() | |
3363 | */ | |
3364 | int drm_atomic_helper_resume(struct drm_device *dev, | |
3365 | struct drm_atomic_state *state) | |
3366 | { | |
a5b8444e | 3367 | struct drm_modeset_acquire_ctx ctx; |
14942760 TR |
3368 | int err; |
3369 | ||
3370 | drm_mode_config_reset(dev); | |
581e49fe | 3371 | |
b7ea04d2 | 3372 | DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, 0, err); |
869e188a | 3373 | |
b7ea04d2 | 3374 | err = drm_atomic_helper_commit_duplicated_state(state, &ctx); |
a5b8444e | 3375 | |
b7ea04d2 | 3376 | DRM_MODESET_LOCK_ALL_END(ctx, err); |
6d281b1f | 3377 | drm_atomic_state_put(state); |
14942760 TR |
3378 | |
3379 | return err; | |
3380 | } | |
3381 | EXPORT_SYMBOL(drm_atomic_helper_resume); | |
3382 | ||
8c3a8181 DV |
3383 | static int page_flip_common(struct drm_atomic_state *state, |
3384 | struct drm_crtc *crtc, | |
3385 | struct drm_framebuffer *fb, | |
3386 | struct drm_pending_vblank_event *event, | |
3387 | uint32_t flags) | |
f869a6ec AG |
3388 | { |
3389 | struct drm_plane *plane = crtc->primary; | |
3390 | struct drm_plane_state *plane_state; | |
3391 | struct drm_crtc_state *crtc_state; | |
3392 | int ret = 0; | |
3393 | ||
3394 | crtc_state = drm_atomic_get_crtc_state(state, crtc); | |
3395 | if (IS_ERR(crtc_state)) | |
3396 | return PTR_ERR(crtc_state); | |
3397 | ||
3398 | crtc_state->event = event; | |
6cbe5c46 | 3399 | crtc_state->pageflip_flags = flags; |
f869a6ec AG |
3400 | |
3401 | plane_state = drm_atomic_get_plane_state(state, plane); | |
3402 | if (IS_ERR(plane_state)) | |
3403 | return PTR_ERR(plane_state); | |
3404 | ||
f869a6ec AG |
3405 | ret = drm_atomic_set_crtc_for_plane(plane_state, crtc); |
3406 | if (ret != 0) | |
3407 | return ret; | |
3408 | drm_atomic_set_fb_for_plane(plane_state, fb); | |
3409 | ||
3410 | /* Make sure we don't accidentally do a full modeset. */ | |
3411 | state->allow_modeset = false; | |
3412 | if (!crtc_state->active) { | |
6ac7c548 RK |
3413 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] disabled, rejecting legacy flip\n", |
3414 | crtc->base.id, crtc->name); | |
f869a6ec AG |
3415 | return -EINVAL; |
3416 | } | |
3417 | ||
3418 | return ret; | |
3419 | } | |
3420 | ||
8bc0f312 DV |
3421 | /** |
3422 | * drm_atomic_helper_page_flip - execute a legacy page flip | |
3423 | * @crtc: DRM crtc | |
3424 | * @fb: DRM framebuffer | |
3425 | * @event: optional DRM event to signal upon completion | |
3426 | * @flags: flip flags for non-vblank sync'ed updates | |
41292b1f | 3427 | * @ctx: lock acquisition context |
8bc0f312 | 3428 | * |
f869a6ec AG |
3429 | * Provides a default &drm_crtc_funcs.page_flip implementation |
3430 | * using the atomic driver interface. | |
8bc0f312 | 3431 | * |
8bc0f312 DV |
3432 | * Returns: |
3433 | * Returns 0 on success, negative errno numbers on failure. | |
f869a6ec AG |
3434 | * |
3435 | * See also: | |
3436 | * drm_atomic_helper_page_flip_target() | |
8bc0f312 DV |
3437 | */ |
3438 | int drm_atomic_helper_page_flip(struct drm_crtc *crtc, | |
3439 | struct drm_framebuffer *fb, | |
3440 | struct drm_pending_vblank_event *event, | |
41292b1f DV |
3441 | uint32_t flags, |
3442 | struct drm_modeset_acquire_ctx *ctx) | |
8bc0f312 DV |
3443 | { |
3444 | struct drm_plane *plane = crtc->primary; | |
3445 | struct drm_atomic_state *state; | |
8bc0f312 DV |
3446 | int ret = 0; |
3447 | ||
8bc0f312 DV |
3448 | state = drm_atomic_state_alloc(plane->dev); |
3449 | if (!state) | |
3450 | return -ENOMEM; | |
3451 | ||
043e7fb6 | 3452 | state->acquire_ctx = ctx; |
f869a6ec | 3453 | |
6cbe5c46 | 3454 | ret = page_flip_common(state, crtc, fb, event, flags); |
f869a6ec | 3455 | if (ret != 0) |
8bc0f312 | 3456 | goto fail; |
8bc0f312 | 3457 | |
f869a6ec | 3458 | ret = drm_atomic_nonblocking_commit(state); |
f869a6ec | 3459 | fail: |
f869a6ec AG |
3460 | drm_atomic_state_put(state); |
3461 | return ret; | |
f869a6ec AG |
3462 | } |
3463 | EXPORT_SYMBOL(drm_atomic_helper_page_flip); | |
3464 | ||
3465 | /** | |
3466 | * drm_atomic_helper_page_flip_target - do page flip on target vblank period. | |
3467 | * @crtc: DRM crtc | |
3468 | * @fb: DRM framebuffer | |
3469 | * @event: optional DRM event to signal upon completion | |
3470 | * @flags: flip flags for non-vblank sync'ed updates | |
3471 | * @target: specifying the target vblank period when the flip to take effect | |
41292b1f | 3472 | * @ctx: lock acquisition context |
f869a6ec AG |
3473 | * |
3474 | * Provides a default &drm_crtc_funcs.page_flip_target implementation. | |
3475 | * Similar to drm_atomic_helper_page_flip() with extra parameter to specify | |
3476 | * target vblank period to flip. | |
3477 | * | |
3478 | * Returns: | |
3479 | * Returns 0 on success, negative errno numbers on failure. | |
3480 | */ | |
8c3a8181 DV |
3481 | int drm_atomic_helper_page_flip_target(struct drm_crtc *crtc, |
3482 | struct drm_framebuffer *fb, | |
3483 | struct drm_pending_vblank_event *event, | |
3484 | uint32_t flags, | |
3485 | uint32_t target, | |
3486 | struct drm_modeset_acquire_ctx *ctx) | |
f869a6ec AG |
3487 | { |
3488 | struct drm_plane *plane = crtc->primary; | |
3489 | struct drm_atomic_state *state; | |
3490 | struct drm_crtc_state *crtc_state; | |
3491 | int ret = 0; | |
3492 | ||
f869a6ec AG |
3493 | state = drm_atomic_state_alloc(plane->dev); |
3494 | if (!state) | |
3495 | return -ENOMEM; | |
3496 | ||
043e7fb6 | 3497 | state->acquire_ctx = ctx; |
f869a6ec | 3498 | |
6cbe5c46 | 3499 | ret = page_flip_common(state, crtc, fb, event, flags); |
8bc0f312 DV |
3500 | if (ret != 0) |
3501 | goto fail; | |
8bc0f312 | 3502 | |
b4d93679 | 3503 | crtc_state = drm_atomic_get_new_crtc_state(state, crtc); |
f869a6ec | 3504 | if (WARN_ON(!crtc_state)) { |
4cba6850 DV |
3505 | ret = -EINVAL; |
3506 | goto fail; | |
3507 | } | |
f869a6ec | 3508 | crtc_state->target_vblank = target; |
4cba6850 | 3509 | |
b837ba0a | 3510 | ret = drm_atomic_nonblocking_commit(state); |
8bc0f312 | 3511 | fail: |
0853695c | 3512 | drm_atomic_state_put(state); |
8bc0f312 | 3513 | return ret; |
8bc0f312 | 3514 | } |
f869a6ec | 3515 | EXPORT_SYMBOL(drm_atomic_helper_page_flip_target); |
1d8224e7 DV |
3516 | |
3517 | /** | |
3518 | * drm_atomic_helper_legacy_gamma_set - set the legacy gamma correction table | |
3519 | * @crtc: CRTC object | |
3520 | * @red: red correction table | |
3521 | * @green: green correction table | |
3522 | * @blue: green correction table | |
3523 | * @size: size of the tables | |
3524 | * @ctx: lock acquire context | |
3525 | * | |
3526 | * Implements support for legacy gamma correction table for drivers | |
3527 | * that support color management through the DEGAMMA_LUT/GAMMA_LUT | |
3528 | * properties. See drm_crtc_enable_color_mgmt() and the containing chapter for | |
3529 | * how the atomic color management and gamma tables work. | |
3530 | */ | |
3531 | int drm_atomic_helper_legacy_gamma_set(struct drm_crtc *crtc, | |
3532 | u16 *red, u16 *green, u16 *blue, | |
3533 | uint32_t size, | |
3534 | struct drm_modeset_acquire_ctx *ctx) | |
3535 | { | |
3536 | struct drm_device *dev = crtc->dev; | |
3537 | struct drm_atomic_state *state; | |
3538 | struct drm_crtc_state *crtc_state; | |
3539 | struct drm_property_blob *blob = NULL; | |
3540 | struct drm_color_lut *blob_data; | |
3541 | int i, ret = 0; | |
3542 | bool replaced; | |
3543 | ||
3544 | state = drm_atomic_state_alloc(crtc->dev); | |
3545 | if (!state) | |
3546 | return -ENOMEM; | |
3547 | ||
3548 | blob = drm_property_create_blob(dev, | |
3549 | sizeof(struct drm_color_lut) * size, | |
3550 | NULL); | |
3551 | if (IS_ERR(blob)) { | |
3552 | ret = PTR_ERR(blob); | |
3553 | blob = NULL; | |
3554 | goto fail; | |
3555 | } | |
3556 | ||
3557 | /* Prepare GAMMA_LUT with the legacy values. */ | |
3558 | blob_data = blob->data; | |
3559 | for (i = 0; i < size; i++) { | |
3560 | blob_data[i].red = red[i]; | |
3561 | blob_data[i].green = green[i]; | |
3562 | blob_data[i].blue = blue[i]; | |
3563 | } | |
3564 | ||
3565 | state->acquire_ctx = ctx; | |
3566 | crtc_state = drm_atomic_get_crtc_state(state, crtc); | |
3567 | if (IS_ERR(crtc_state)) { | |
3568 | ret = PTR_ERR(crtc_state); | |
3569 | goto fail; | |
3570 | } | |
3571 | ||
3572 | /* Reset DEGAMMA_LUT and CTM properties. */ | |
3573 | replaced = drm_property_replace_blob(&crtc_state->degamma_lut, NULL); | |
3574 | replaced |= drm_property_replace_blob(&crtc_state->ctm, NULL); | |
3575 | replaced |= drm_property_replace_blob(&crtc_state->gamma_lut, blob); | |
3576 | crtc_state->color_mgmt_changed |= replaced; | |
3577 | ||
3578 | ret = drm_atomic_commit(state); | |
3579 | ||
3580 | fail: | |
3581 | drm_atomic_state_put(state); | |
3582 | drm_property_blob_put(blob); | |
3583 | return ret; | |
3584 | } | |
3585 | EXPORT_SYMBOL(drm_atomic_helper_legacy_gamma_set); |