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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 | ||
0500c04e | 28 | #include <linux/dma-fence.h> |
d4da4e33 | 29 | #include <linux/ktime.h> |
0500c04e | 30 | |
c2fcd274 | 31 | #include <drm/drm_atomic.h> |
0500c04e | 32 | #include <drm/drm_atomic_helper.h> |
72fdb40c | 33 | #include <drm/drm_atomic_uapi.h> |
ee68c743 | 34 | #include <drm/drm_bridge.h> |
0500c04e SR |
35 | #include <drm/drm_damage_helper.h> |
36 | #include <drm/drm_device.h> | |
c2fcd274 | 37 | #include <drm/drm_plane_helper.h> |
0500c04e | 38 | #include <drm/drm_print.h> |
1452c25b | 39 | #include <drm/drm_self_refresh_helper.h> |
0500c04e | 40 | #include <drm/drm_vblank.h> |
935774cd | 41 | #include <drm/drm_writeback.h> |
c2fcd274 | 42 | |
faf94a08 | 43 | #include "drm_crtc_helper_internal.h" |
44d1240d MS |
44 | #include "drm_crtc_internal.h" |
45 | ||
3150c7d0 DV |
46 | /** |
47 | * DOC: overview | |
48 | * | |
49 | * This helper library provides implementations of check and commit functions on | |
50 | * top of the CRTC modeset helper callbacks and the plane helper callbacks. It | |
51 | * also provides convenience implementations for the atomic state handling | |
52 | * callbacks for drivers which don't need to subclass the drm core structures to | |
53 | * add their own additional internal state. | |
54 | * | |
55 | * This library also provides default implementations for the check callback in | |
26196f7e DV |
56 | * drm_atomic_helper_check() and for the commit callback with |
57 | * drm_atomic_helper_commit(). But the individual stages and callbacks are | |
58 | * exposed to allow drivers to mix and match and e.g. use the plane helpers only | |
3150c7d0 DV |
59 | * together with a driver private modeset implementation. |
60 | * | |
61 | * This library also provides implementations for all the legacy driver | |
26196f7e DV |
62 | * interfaces on top of the atomic interface. See drm_atomic_helper_set_config(), |
63 | * drm_atomic_helper_disable_plane(), drm_atomic_helper_disable_plane() and the | |
3150c7d0 DV |
64 | * various functions to implement set_property callbacks. New drivers must not |
65 | * implement these functions themselves but must use the provided helpers. | |
092d01da DV |
66 | * |
67 | * The atomic helper uses the same function table structures as all other | |
ea0dd85a DV |
68 | * modesetting helpers. See the documentation for &struct drm_crtc_helper_funcs, |
69 | * struct &drm_encoder_helper_funcs and &struct drm_connector_helper_funcs. It | |
70 | * also shares the &struct drm_plane_helper_funcs function table with the plane | |
092d01da | 71 | * helpers. |
3150c7d0 | 72 | */ |
c2fcd274 DV |
73 | static void |
74 | drm_atomic_helper_plane_changed(struct drm_atomic_state *state, | |
415c3ac3 | 75 | struct drm_plane_state *old_plane_state, |
c2fcd274 DV |
76 | struct drm_plane_state *plane_state, |
77 | struct drm_plane *plane) | |
78 | { | |
79 | struct drm_crtc_state *crtc_state; | |
80 | ||
415c3ac3 | 81 | if (old_plane_state->crtc) { |
b4d93679 ML |
82 | crtc_state = drm_atomic_get_new_crtc_state(state, |
83 | old_plane_state->crtc); | |
c2fcd274 DV |
84 | |
85 | if (WARN_ON(!crtc_state)) | |
86 | return; | |
87 | ||
88 | crtc_state->planes_changed = true; | |
89 | } | |
90 | ||
91 | if (plane_state->crtc) { | |
b4d93679 | 92 | crtc_state = drm_atomic_get_new_crtc_state(state, plane_state->crtc); |
c2fcd274 DV |
93 | |
94 | if (WARN_ON(!crtc_state)) | |
95 | return; | |
96 | ||
97 | crtc_state->planes_changed = true; | |
98 | } | |
99 | } | |
100 | ||
8248b65d ML |
101 | static int handle_conflicting_encoders(struct drm_atomic_state *state, |
102 | bool disable_conflicting_encoders) | |
97ac3204 | 103 | { |
415c3ac3 | 104 | struct drm_connector_state *new_conn_state; |
40616a26 | 105 | struct drm_connector *connector; |
c36a3254 | 106 | struct drm_connector_list_iter conn_iter; |
40616a26 ML |
107 | struct drm_encoder *encoder; |
108 | unsigned encoder_mask = 0; | |
c36a3254 | 109 | int i, ret = 0; |
97ac3204 | 110 | |
8248b65d ML |
111 | /* |
112 | * First loop, find all newly assigned encoders from the connectors | |
113 | * part of the state. If the same encoder is assigned to multiple | |
114 | * connectors bail out. | |
115 | */ | |
415c3ac3 | 116 | for_each_new_connector_in_state(state, connector, new_conn_state, i) { |
40616a26 ML |
117 | const struct drm_connector_helper_funcs *funcs = connector->helper_private; |
118 | struct drm_encoder *new_encoder; | |
119 | ||
415c3ac3 | 120 | if (!new_conn_state->crtc) |
97ac3204 DV |
121 | continue; |
122 | ||
40616a26 | 123 | if (funcs->atomic_best_encoder) |
415c3ac3 | 124 | new_encoder = funcs->atomic_best_encoder(connector, new_conn_state); |
a0909cc5 | 125 | else if (funcs->best_encoder) |
40616a26 | 126 | new_encoder = funcs->best_encoder(connector); |
a0909cc5 | 127 | else |
a92462d6 | 128 | new_encoder = drm_connector_get_single_encoder(connector); |
40616a26 | 129 | |
8248b65d | 130 | if (new_encoder) { |
6f3be036 | 131 | if (encoder_mask & drm_encoder_mask(new_encoder)) { |
8248b65d ML |
132 | DRM_DEBUG_ATOMIC("[ENCODER:%d:%s] on [CONNECTOR:%d:%s] already assigned\n", |
133 | new_encoder->base.id, new_encoder->name, | |
134 | connector->base.id, connector->name); | |
135 | ||
136 | return -EINVAL; | |
137 | } | |
138 | ||
6f3be036 | 139 | encoder_mask |= drm_encoder_mask(new_encoder); |
8248b65d | 140 | } |
97ac3204 DV |
141 | } |
142 | ||
8248b65d ML |
143 | if (!encoder_mask) |
144 | return 0; | |
97ac3204 | 145 | |
8248b65d ML |
146 | /* |
147 | * Second loop, iterate over all connectors not part of the state. | |
148 | * | |
149 | * If a conflicting encoder is found and disable_conflicting_encoders | |
150 | * is not set, an error is returned. Userspace can provide a solution | |
151 | * through the atomic ioctl. | |
152 | * | |
153 | * If the flag is set conflicting connectors are removed from the crtc | |
154 | * and the crtc is disabled if no encoder is left. This preserves | |
155 | * compatibility with the legacy set_config behavior. | |
156 | */ | |
b982dab1 | 157 | drm_connector_list_iter_begin(state->dev, &conn_iter); |
c36a3254 | 158 | drm_for_each_connector_iter(connector, &conn_iter) { |
40616a26 | 159 | struct drm_crtc_state *crtc_state; |
623369e5 | 160 | |
b4d93679 | 161 | if (drm_atomic_get_new_connector_state(state, connector)) |
40616a26 | 162 | continue; |
623369e5 | 163 | |
40616a26 | 164 | encoder = connector->state->best_encoder; |
6f3be036 | 165 | if (!encoder || !(encoder_mask & drm_encoder_mask(encoder))) |
623369e5 DV |
166 | continue; |
167 | ||
8248b65d ML |
168 | if (!disable_conflicting_encoders) { |
169 | DRM_DEBUG_ATOMIC("[ENCODER:%d:%s] in use on [CRTC:%d:%s] by [CONNECTOR:%d:%s]\n", | |
170 | encoder->base.id, encoder->name, | |
171 | connector->state->crtc->base.id, | |
172 | connector->state->crtc->name, | |
173 | connector->base.id, connector->name); | |
c36a3254 DV |
174 | ret = -EINVAL; |
175 | goto out; | |
8248b65d ML |
176 | } |
177 | ||
415c3ac3 ML |
178 | new_conn_state = drm_atomic_get_connector_state(state, connector); |
179 | if (IS_ERR(new_conn_state)) { | |
180 | ret = PTR_ERR(new_conn_state); | |
c36a3254 DV |
181 | goto out; |
182 | } | |
40616a26 ML |
183 | |
184 | DRM_DEBUG_ATOMIC("[ENCODER:%d:%s] in use on [CRTC:%d:%s], disabling [CONNECTOR:%d:%s]\n", | |
185 | encoder->base.id, encoder->name, | |
415c3ac3 | 186 | new_conn_state->crtc->base.id, new_conn_state->crtc->name, |
40616a26 ML |
187 | connector->base.id, connector->name); |
188 | ||
b4d93679 | 189 | crtc_state = drm_atomic_get_new_crtc_state(state, new_conn_state->crtc); |
40616a26 | 190 | |
415c3ac3 | 191 | ret = drm_atomic_set_crtc_for_connector(new_conn_state, NULL); |
40616a26 | 192 | if (ret) |
c36a3254 | 193 | goto out; |
40616a26 ML |
194 | |
195 | if (!crtc_state->connector_mask) { | |
196 | ret = drm_atomic_set_mode_prop_for_crtc(crtc_state, | |
197 | NULL); | |
198 | if (ret < 0) | |
c36a3254 | 199 | goto out; |
40616a26 ML |
200 | |
201 | crtc_state->active = false; | |
202 | } | |
623369e5 | 203 | } |
c36a3254 | 204 | out: |
b982dab1 | 205 | drm_connector_list_iter_end(&conn_iter); |
623369e5 | 206 | |
c36a3254 | 207 | return ret; |
623369e5 DV |
208 | } |
209 | ||
e87a52b3 ML |
210 | static void |
211 | set_best_encoder(struct drm_atomic_state *state, | |
212 | struct drm_connector_state *conn_state, | |
213 | struct drm_encoder *encoder) | |
214 | { | |
215 | struct drm_crtc_state *crtc_state; | |
216 | struct drm_crtc *crtc; | |
217 | ||
218 | if (conn_state->best_encoder) { | |
219 | /* Unset the encoder_mask in the old crtc state. */ | |
220 | crtc = conn_state->connector->state->crtc; | |
221 | ||
222 | /* A NULL crtc is an error here because we should have | |
223 | * duplicated a NULL best_encoder when crtc was NULL. | |
224 | * As an exception restoring duplicated atomic state | |
225 | * during resume is allowed, so don't warn when | |
226 | * best_encoder is equal to encoder we intend to set. | |
227 | */ | |
228 | WARN_ON(!crtc && encoder != conn_state->best_encoder); | |
229 | if (crtc) { | |
b4d93679 | 230 | crtc_state = drm_atomic_get_new_crtc_state(state, crtc); |
e87a52b3 ML |
231 | |
232 | crtc_state->encoder_mask &= | |
6f3be036 | 233 | ~drm_encoder_mask(conn_state->best_encoder); |
e87a52b3 ML |
234 | } |
235 | } | |
236 | ||
237 | if (encoder) { | |
238 | crtc = conn_state->crtc; | |
239 | WARN_ON(!crtc); | |
240 | if (crtc) { | |
b4d93679 | 241 | crtc_state = drm_atomic_get_new_crtc_state(state, crtc); |
e87a52b3 ML |
242 | |
243 | crtc_state->encoder_mask |= | |
6f3be036 | 244 | drm_encoder_mask(encoder); |
e87a52b3 ML |
245 | } |
246 | } | |
247 | ||
248 | conn_state->best_encoder = encoder; | |
249 | } | |
250 | ||
ec5aaa58 | 251 | static void |
623369e5 | 252 | steal_encoder(struct drm_atomic_state *state, |
ff19b786 | 253 | struct drm_encoder *encoder) |
623369e5 | 254 | { |
623369e5 DV |
255 | struct drm_crtc_state *crtc_state; |
256 | struct drm_connector *connector; | |
415c3ac3 | 257 | struct drm_connector_state *old_connector_state, *new_connector_state; |
ec5aaa58 | 258 | int i; |
623369e5 | 259 | |
415c3ac3 | 260 | for_each_oldnew_connector_in_state(state, connector, old_connector_state, new_connector_state, i) { |
ff19b786 | 261 | struct drm_crtc *encoder_crtc; |
623369e5 | 262 | |
415c3ac3 | 263 | if (new_connector_state->best_encoder != encoder) |
623369e5 DV |
264 | continue; |
265 | ||
415c3ac3 | 266 | encoder_crtc = old_connector_state->crtc; |
623369e5 | 267 | |
ff19b786 ML |
268 | DRM_DEBUG_ATOMIC("[ENCODER:%d:%s] in use on [CRTC:%d:%s], stealing it\n", |
269 | encoder->base.id, encoder->name, | |
270 | encoder_crtc->base.id, encoder_crtc->name); | |
e87a52b3 | 271 | |
415c3ac3 | 272 | set_best_encoder(state, new_connector_state, NULL); |
623369e5 | 273 | |
b4d93679 | 274 | crtc_state = drm_atomic_get_new_crtc_state(state, encoder_crtc); |
ff19b786 ML |
275 | crtc_state->connectors_changed = true; |
276 | ||
ec5aaa58 | 277 | return; |
623369e5 | 278 | } |
623369e5 DV |
279 | } |
280 | ||
281 | static int | |
9459545b ML |
282 | update_connector_routing(struct drm_atomic_state *state, |
283 | struct drm_connector *connector, | |
415c3ac3 ML |
284 | struct drm_connector_state *old_connector_state, |
285 | struct drm_connector_state *new_connector_state) | |
623369e5 | 286 | { |
b5ceff20 | 287 | const struct drm_connector_helper_funcs *funcs; |
623369e5 | 288 | struct drm_encoder *new_encoder; |
623369e5 | 289 | struct drm_crtc_state *crtc_state; |
623369e5 | 290 | |
17a38d9c DV |
291 | DRM_DEBUG_ATOMIC("Updating routing for [CONNECTOR:%d:%s]\n", |
292 | connector->base.id, | |
293 | connector->name); | |
623369e5 | 294 | |
415c3ac3 ML |
295 | if (old_connector_state->crtc != new_connector_state->crtc) { |
296 | if (old_connector_state->crtc) { | |
b4d93679 | 297 | crtc_state = drm_atomic_get_new_crtc_state(state, old_connector_state->crtc); |
fc596660 | 298 | crtc_state->connectors_changed = true; |
623369e5 DV |
299 | } |
300 | ||
415c3ac3 | 301 | if (new_connector_state->crtc) { |
b4d93679 | 302 | crtc_state = drm_atomic_get_new_crtc_state(state, new_connector_state->crtc); |
fc596660 | 303 | crtc_state->connectors_changed = true; |
623369e5 DV |
304 | } |
305 | } | |
306 | ||
415c3ac3 | 307 | if (!new_connector_state->crtc) { |
17a38d9c | 308 | DRM_DEBUG_ATOMIC("Disabling [CONNECTOR:%d:%s]\n", |
623369e5 DV |
309 | connector->base.id, |
310 | connector->name); | |
311 | ||
415c3ac3 | 312 | set_best_encoder(state, new_connector_state, NULL); |
623369e5 DV |
313 | |
314 | return 0; | |
315 | } | |
316 | ||
de9f8eea LP |
317 | crtc_state = drm_atomic_get_new_crtc_state(state, |
318 | new_connector_state->crtc); | |
319 | /* | |
320 | * For compatibility with legacy users, we want to make sure that | |
321 | * we allow DPMS On->Off modesets on unregistered connectors. Modesets | |
322 | * which would result in anything else must be considered invalid, to | |
323 | * avoid turning on new displays on dead connectors. | |
324 | * | |
325 | * Since the connector can be unregistered at any point during an | |
326 | * atomic check or commit, this is racy. But that's OK: all we care | |
327 | * about is ensuring that userspace can't do anything but shut off the | |
1e55a53a | 328 | * display on a connector that was destroyed after it's been notified, |
de9f8eea | 329 | * not before. |
022debad LP |
330 | * |
331 | * Additionally, we also want to ignore connector registration when | |
332 | * we're trying to restore an atomic state during system resume since | |
333 | * there's a chance the connector may have been destroyed during the | |
334 | * process, but it's better to ignore that then cause | |
335 | * drm_atomic_helper_resume() to fail. | |
de9f8eea | 336 | */ |
022debad LP |
337 | if (!state->duplicated && drm_connector_is_unregistered(connector) && |
338 | crtc_state->active) { | |
de9f8eea LP |
339 | DRM_DEBUG_ATOMIC("[CONNECTOR:%d:%s] is not registered\n", |
340 | connector->base.id, connector->name); | |
341 | return -EINVAL; | |
342 | } | |
343 | ||
623369e5 | 344 | funcs = connector->helper_private; |
3b8a684b DV |
345 | |
346 | if (funcs->atomic_best_encoder) | |
347 | new_encoder = funcs->atomic_best_encoder(connector, | |
415c3ac3 | 348 | new_connector_state); |
c61b93fe | 349 | else if (funcs->best_encoder) |
3b8a684b | 350 | new_encoder = funcs->best_encoder(connector); |
c61b93fe | 351 | else |
a92462d6 | 352 | new_encoder = drm_connector_get_single_encoder(connector); |
623369e5 DV |
353 | |
354 | if (!new_encoder) { | |
17a38d9c DV |
355 | DRM_DEBUG_ATOMIC("No suitable encoder found for [CONNECTOR:%d:%s]\n", |
356 | connector->base.id, | |
357 | connector->name); | |
623369e5 DV |
358 | return -EINVAL; |
359 | } | |
360 | ||
415c3ac3 | 361 | if (!drm_encoder_crtc_ok(new_encoder, new_connector_state->crtc)) { |
6ac7c548 | 362 | DRM_DEBUG_ATOMIC("[ENCODER:%d:%s] incompatible with [CRTC:%d:%s]\n", |
5481c8fb DV |
363 | new_encoder->base.id, |
364 | new_encoder->name, | |
415c3ac3 ML |
365 | new_connector_state->crtc->base.id, |
366 | new_connector_state->crtc->name); | |
5481c8fb DV |
367 | return -EINVAL; |
368 | } | |
369 | ||
415c3ac3 ML |
370 | if (new_encoder == new_connector_state->best_encoder) { |
371 | set_best_encoder(state, new_connector_state, new_encoder); | |
e87a52b3 | 372 | |
fa3ab4c2 | 373 | DRM_DEBUG_ATOMIC("[CONNECTOR:%d:%s] keeps [ENCODER:%d:%s], now on [CRTC:%d:%s]\n", |
17a38d9c DV |
374 | connector->base.id, |
375 | connector->name, | |
376 | new_encoder->base.id, | |
377 | new_encoder->name, | |
415c3ac3 ML |
378 | new_connector_state->crtc->base.id, |
379 | new_connector_state->crtc->name); | |
623369e5 DV |
380 | |
381 | return 0; | |
382 | } | |
383 | ||
ec5aaa58 | 384 | steal_encoder(state, new_encoder); |
6ea76f3c | 385 | |
415c3ac3 | 386 | set_best_encoder(state, new_connector_state, new_encoder); |
e87a52b3 | 387 | |
fc596660 | 388 | crtc_state->connectors_changed = true; |
623369e5 | 389 | |
fa3ab4c2 | 390 | DRM_DEBUG_ATOMIC("[CONNECTOR:%d:%s] using [ENCODER:%d:%s] on [CRTC:%d:%s]\n", |
17a38d9c DV |
391 | connector->base.id, |
392 | connector->name, | |
393 | new_encoder->base.id, | |
394 | new_encoder->name, | |
415c3ac3 ML |
395 | new_connector_state->crtc->base.id, |
396 | new_connector_state->crtc->name); | |
623369e5 DV |
397 | |
398 | return 0; | |
399 | } | |
400 | ||
401 | static int | |
402 | mode_fixup(struct drm_atomic_state *state) | |
403 | { | |
df63b999 | 404 | struct drm_crtc *crtc; |
415c3ac3 | 405 | struct drm_crtc_state *new_crtc_state; |
df63b999 | 406 | struct drm_connector *connector; |
415c3ac3 | 407 | struct drm_connector_state *new_conn_state; |
623369e5 | 408 | int i; |
f9ad86e4 | 409 | int ret; |
623369e5 | 410 | |
415c3ac3 ML |
411 | for_each_new_crtc_in_state(state, crtc, new_crtc_state, i) { |
412 | if (!new_crtc_state->mode_changed && | |
413 | !new_crtc_state->connectors_changed) | |
623369e5 DV |
414 | continue; |
415 | ||
415c3ac3 | 416 | drm_mode_copy(&new_crtc_state->adjusted_mode, &new_crtc_state->mode); |
623369e5 DV |
417 | } |
418 | ||
415c3ac3 | 419 | for_each_new_connector_in_state(state, connector, new_conn_state, i) { |
b5ceff20 | 420 | const struct drm_encoder_helper_funcs *funcs; |
623369e5 DV |
421 | struct drm_encoder *encoder; |
422 | ||
415c3ac3 | 423 | WARN_ON(!!new_conn_state->best_encoder != !!new_conn_state->crtc); |
623369e5 | 424 | |
415c3ac3 | 425 | if (!new_conn_state->crtc || !new_conn_state->best_encoder) |
623369e5 DV |
426 | continue; |
427 | ||
415c3ac3 | 428 | new_crtc_state = |
b4d93679 | 429 | drm_atomic_get_new_crtc_state(state, new_conn_state->crtc); |
623369e5 DV |
430 | |
431 | /* | |
432 | * Each encoder has at most one connector (since we always steal | |
433 | * it away), so we won't call ->mode_fixup twice. | |
434 | */ | |
415c3ac3 | 435 | encoder = new_conn_state->best_encoder; |
623369e5 DV |
436 | funcs = encoder->helper_private; |
437 | ||
415c3ac3 ML |
438 | ret = drm_bridge_mode_fixup(encoder->bridge, &new_crtc_state->mode, |
439 | &new_crtc_state->adjusted_mode); | |
862e686c AT |
440 | if (!ret) { |
441 | DRM_DEBUG_ATOMIC("Bridge fixup failed\n"); | |
442 | return -EINVAL; | |
623369e5 DV |
443 | } |
444 | ||
2827635e | 445 | if (funcs && funcs->atomic_check) { |
415c3ac3 ML |
446 | ret = funcs->atomic_check(encoder, new_crtc_state, |
447 | new_conn_state); | |
4cd4df80 | 448 | if (ret) { |
17a38d9c DV |
449 | DRM_DEBUG_ATOMIC("[ENCODER:%d:%s] check failed\n", |
450 | encoder->base.id, encoder->name); | |
4cd4df80 TR |
451 | return ret; |
452 | } | |
2827635e | 453 | } else if (funcs && funcs->mode_fixup) { |
415c3ac3 ML |
454 | ret = funcs->mode_fixup(encoder, &new_crtc_state->mode, |
455 | &new_crtc_state->adjusted_mode); | |
4cd4df80 | 456 | if (!ret) { |
17a38d9c DV |
457 | DRM_DEBUG_ATOMIC("[ENCODER:%d:%s] fixup failed\n", |
458 | encoder->base.id, encoder->name); | |
4cd4df80 TR |
459 | return -EINVAL; |
460 | } | |
623369e5 DV |
461 | } |
462 | } | |
463 | ||
415c3ac3 | 464 | for_each_new_crtc_in_state(state, crtc, new_crtc_state, i) { |
b5ceff20 | 465 | const struct drm_crtc_helper_funcs *funcs; |
623369e5 | 466 | |
415c3ac3 | 467 | if (!new_crtc_state->enable) |
f55f1701 LY |
468 | continue; |
469 | ||
415c3ac3 ML |
470 | if (!new_crtc_state->mode_changed && |
471 | !new_crtc_state->connectors_changed) | |
623369e5 DV |
472 | continue; |
473 | ||
474 | funcs = crtc->helper_private; | |
26564be5 | 475 | if (!funcs || !funcs->mode_fixup) |
840bfe95 ACO |
476 | continue; |
477 | ||
415c3ac3 ML |
478 | ret = funcs->mode_fixup(crtc, &new_crtc_state->mode, |
479 | &new_crtc_state->adjusted_mode); | |
623369e5 | 480 | if (!ret) { |
fa3ab4c2 VS |
481 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] fixup failed\n", |
482 | crtc->base.id, crtc->name); | |
623369e5 DV |
483 | return -EINVAL; |
484 | } | |
485 | } | |
486 | ||
487 | return 0; | |
488 | } | |
489 | ||
faf94a08 JA |
490 | static enum drm_mode_status mode_valid_path(struct drm_connector *connector, |
491 | struct drm_encoder *encoder, | |
492 | struct drm_crtc *crtc, | |
8518f05a | 493 | const struct drm_display_mode *mode) |
faf94a08 JA |
494 | { |
495 | enum drm_mode_status ret; | |
496 | ||
497 | ret = drm_encoder_mode_valid(encoder, mode); | |
498 | if (ret != MODE_OK) { | |
499 | DRM_DEBUG_ATOMIC("[ENCODER:%d:%s] mode_valid() failed\n", | |
500 | encoder->base.id, encoder->name); | |
501 | return ret; | |
502 | } | |
503 | ||
504 | ret = drm_bridge_mode_valid(encoder->bridge, mode); | |
505 | if (ret != MODE_OK) { | |
506 | DRM_DEBUG_ATOMIC("[BRIDGE] mode_valid() failed\n"); | |
507 | return ret; | |
508 | } | |
509 | ||
510 | ret = drm_crtc_mode_valid(crtc, mode); | |
511 | if (ret != MODE_OK) { | |
512 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] mode_valid() failed\n", | |
513 | crtc->base.id, crtc->name); | |
514 | return ret; | |
515 | } | |
516 | ||
517 | return ret; | |
518 | } | |
519 | ||
520 | static int | |
521 | mode_valid(struct drm_atomic_state *state) | |
522 | { | |
523 | struct drm_connector_state *conn_state; | |
524 | struct drm_connector *connector; | |
525 | int i; | |
526 | ||
527 | for_each_new_connector_in_state(state, connector, conn_state, i) { | |
528 | struct drm_encoder *encoder = conn_state->best_encoder; | |
529 | struct drm_crtc *crtc = conn_state->crtc; | |
530 | struct drm_crtc_state *crtc_state; | |
531 | enum drm_mode_status mode_status; | |
8518f05a | 532 | const struct drm_display_mode *mode; |
faf94a08 JA |
533 | |
534 | if (!crtc || !encoder) | |
535 | continue; | |
536 | ||
537 | crtc_state = drm_atomic_get_new_crtc_state(state, crtc); | |
538 | if (!crtc_state) | |
539 | continue; | |
540 | if (!crtc_state->mode_changed && !crtc_state->connectors_changed) | |
541 | continue; | |
542 | ||
543 | mode = &crtc_state->mode; | |
544 | ||
545 | mode_status = mode_valid_path(connector, encoder, crtc, mode); | |
546 | if (mode_status != MODE_OK) | |
547 | return -EINVAL; | |
548 | } | |
549 | ||
550 | return 0; | |
551 | } | |
552 | ||
d9b13620 | 553 | /** |
f98bd3ef | 554 | * drm_atomic_helper_check_modeset - validate state object for modeset changes |
d9b13620 DV |
555 | * @dev: DRM device |
556 | * @state: the driver state object | |
557 | * | |
558 | * Check the state object to see if the requested state is physically possible. | |
559 | * This does all the crtc and connector related computations for an atomic | |
ce09d766 ML |
560 | * update and adds any additional connectors needed for full modesets. It calls |
561 | * the various per-object callbacks in the follow order: | |
562 | * | |
563 | * 1. &drm_connector_helper_funcs.atomic_best_encoder for determining the new encoder. | |
564 | * 2. &drm_connector_helper_funcs.atomic_check to validate the connector state. | |
565 | * 3. If it's determined a modeset is needed then all connectors on the affected crtc | |
566 | * crtc are added and &drm_connector_helper_funcs.atomic_check is run on them. | |
faf94a08 JA |
567 | * 4. &drm_encoder_helper_funcs.mode_valid, &drm_bridge_funcs.mode_valid and |
568 | * &drm_crtc_helper_funcs.mode_valid are called on the affected components. | |
569 | * 5. &drm_bridge_funcs.mode_fixup is called on all encoder bridges. | |
570 | * 6. &drm_encoder_helper_funcs.atomic_check is called to validate any encoder state. | |
ce09d766 ML |
571 | * This function is only called when the encoder will be part of a configured crtc, |
572 | * it must not be used for implementing connector property validation. | |
573 | * If this function is NULL, &drm_atomic_encoder_helper_funcs.mode_fixup is called | |
574 | * instead. | |
faf94a08 | 575 | * 7. &drm_crtc_helper_funcs.mode_fixup is called last, to fix up the mode with crtc constraints. |
6806cdf9 DV |
576 | * |
577 | * &drm_crtc_state.mode_changed is set when the input mode is changed. | |
578 | * &drm_crtc_state.connectors_changed is set when a connector is added or | |
579 | * removed from the crtc. &drm_crtc_state.active_changed is set when | |
580 | * &drm_crtc_state.active changes, which is used for DPMS. | |
d807ed1c | 581 | * See also: drm_atomic_crtc_needs_modeset() |
d9b13620 DV |
582 | * |
583 | * IMPORTANT: | |
584 | * | |
6806cdf9 DV |
585 | * Drivers which set &drm_crtc_state.mode_changed (e.g. in their |
586 | * &drm_plane_helper_funcs.atomic_check hooks if a plane update can't be done | |
587 | * without a full modeset) _must_ call this function afterwards after that | |
588 | * change. It is permitted to call this function multiple times for the same | |
589 | * update, e.g. when the &drm_crtc_helper_funcs.atomic_check functions depend | |
590 | * upon the adjusted dotclock for fifo space allocation and watermark | |
591 | * computation. | |
d9b13620 | 592 | * |
c39032a8 | 593 | * RETURNS: |
d9b13620 DV |
594 | * Zero for success or -errno |
595 | */ | |
596 | int | |
934ce1c2 | 597 | drm_atomic_helper_check_modeset(struct drm_device *dev, |
623369e5 DV |
598 | struct drm_atomic_state *state) |
599 | { | |
623369e5 | 600 | struct drm_crtc *crtc; |
415c3ac3 | 601 | struct drm_crtc_state *old_crtc_state, *new_crtc_state; |
df63b999 | 602 | struct drm_connector *connector; |
415c3ac3 | 603 | struct drm_connector_state *old_connector_state, *new_connector_state; |
623369e5 | 604 | int i, ret; |
ce09d766 | 605 | unsigned connectors_mask = 0; |
623369e5 | 606 | |
415c3ac3 | 607 | for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) { |
970ece83 ML |
608 | bool has_connectors = |
609 | !!new_crtc_state->connector_mask; | |
610 | ||
869e188a DV |
611 | WARN_ON(!drm_modeset_is_locked(&crtc->mutex)); |
612 | ||
415c3ac3 | 613 | if (!drm_mode_equal(&old_crtc_state->mode, &new_crtc_state->mode)) { |
fa3ab4c2 VS |
614 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] mode changed\n", |
615 | crtc->base.id, crtc->name); | |
415c3ac3 | 616 | new_crtc_state->mode_changed = true; |
623369e5 DV |
617 | } |
618 | ||
415c3ac3 | 619 | if (old_crtc_state->enable != new_crtc_state->enable) { |
fa3ab4c2 VS |
620 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] enable changed\n", |
621 | crtc->base.id, crtc->name); | |
fc596660 ML |
622 | |
623 | /* | |
624 | * For clarity this assignment is done here, but | |
625 | * enable == 0 is only true when there are no | |
626 | * connectors and a NULL mode. | |
627 | * | |
628 | * The other way around is true as well. enable != 0 | |
629 | * iff connectors are attached and a mode is set. | |
630 | */ | |
415c3ac3 ML |
631 | new_crtc_state->mode_changed = true; |
632 | new_crtc_state->connectors_changed = true; | |
623369e5 | 633 | } |
24d6652c ML |
634 | |
635 | if (old_crtc_state->active != new_crtc_state->active) { | |
636 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] active changed\n", | |
637 | crtc->base.id, crtc->name); | |
638 | new_crtc_state->active_changed = true; | |
639 | } | |
970ece83 ML |
640 | |
641 | if (new_crtc_state->enable != has_connectors) { | |
642 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] enabled/connectors mismatch\n", | |
643 | crtc->base.id, crtc->name); | |
644 | ||
645 | return -EINVAL; | |
646 | } | |
623369e5 DV |
647 | } |
648 | ||
44596b8c | 649 | ret = handle_conflicting_encoders(state, false); |
8248b65d ML |
650 | if (ret) |
651 | return ret; | |
40616a26 | 652 | |
415c3ac3 | 653 | for_each_oldnew_connector_in_state(state, connector, old_connector_state, new_connector_state, i) { |
ce09d766 ML |
654 | const struct drm_connector_helper_funcs *funcs = connector->helper_private; |
655 | ||
869e188a DV |
656 | WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex)); |
657 | ||
623369e5 | 658 | /* |
d807ed1c BS |
659 | * This only sets crtc->connectors_changed for routing changes, |
660 | * drivers must set crtc->connectors_changed themselves when | |
661 | * connector properties need to be updated. | |
623369e5 | 662 | */ |
9459545b | 663 | ret = update_connector_routing(state, connector, |
415c3ac3 ML |
664 | old_connector_state, |
665 | new_connector_state); | |
623369e5 DV |
666 | if (ret) |
667 | return ret; | |
415c3ac3 | 668 | if (old_connector_state->crtc) { |
b4d93679 ML |
669 | new_crtc_state = drm_atomic_get_new_crtc_state(state, |
670 | old_connector_state->crtc); | |
415c3ac3 ML |
671 | if (old_connector_state->link_status != |
672 | new_connector_state->link_status) | |
673 | new_crtc_state->connectors_changed = true; | |
47e22ff1 RS |
674 | |
675 | if (old_connector_state->max_requested_bpc != | |
676 | new_connector_state->max_requested_bpc) | |
677 | new_crtc_state->connectors_changed = true; | |
40ee6fbe | 678 | } |
ce09d766 ML |
679 | |
680 | if (funcs->atomic_check) | |
6f3b6278 | 681 | ret = funcs->atomic_check(connector, state); |
ce09d766 ML |
682 | if (ret) |
683 | return ret; | |
684 | ||
ca52bea9 | 685 | connectors_mask |= BIT(i); |
623369e5 DV |
686 | } |
687 | ||
688 | /* | |
689 | * After all the routing has been prepared we need to add in any | |
1e55a53a | 690 | * connector which is itself unchanged, but whose crtc changes its |
623369e5 DV |
691 | * configuration. This must be done before calling mode_fixup in case a |
692 | * crtc only changed its mode but has the same set of connectors. | |
693 | */ | |
415c3ac3 | 694 | for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) { |
415c3ac3 | 695 | if (!drm_atomic_crtc_needs_modeset(new_crtc_state)) |
623369e5 DV |
696 | continue; |
697 | ||
fa3ab4c2 VS |
698 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] needs all connectors, enable: %c, active: %c\n", |
699 | crtc->base.id, crtc->name, | |
415c3ac3 ML |
700 | new_crtc_state->enable ? 'y' : 'n', |
701 | new_crtc_state->active ? 'y' : 'n'); | |
623369e5 DV |
702 | |
703 | ret = drm_atomic_add_affected_connectors(state, crtc); | |
704 | if (ret != 0) | |
705 | return ret; | |
706 | ||
57744aa7 ML |
707 | ret = drm_atomic_add_affected_planes(state, crtc); |
708 | if (ret != 0) | |
709 | return ret; | |
623369e5 DV |
710 | } |
711 | ||
ce09d766 ML |
712 | /* |
713 | * Iterate over all connectors again, to make sure atomic_check() | |
714 | * has been called on them when a modeset is forced. | |
715 | */ | |
716 | for_each_oldnew_connector_in_state(state, connector, old_connector_state, new_connector_state, i) { | |
717 | const struct drm_connector_helper_funcs *funcs = connector->helper_private; | |
718 | ||
719 | if (connectors_mask & BIT(i)) | |
720 | continue; | |
721 | ||
722 | if (funcs->atomic_check) | |
6f3b6278 | 723 | ret = funcs->atomic_check(connector, state); |
ce09d766 ML |
724 | if (ret) |
725 | return ret; | |
726 | } | |
727 | ||
faf94a08 JA |
728 | ret = mode_valid(state); |
729 | if (ret) | |
730 | return ret; | |
731 | ||
623369e5 DV |
732 | return mode_fixup(state); |
733 | } | |
d9b13620 | 734 | EXPORT_SYMBOL(drm_atomic_helper_check_modeset); |
623369e5 | 735 | |
a01cb8ba VS |
736 | /** |
737 | * drm_atomic_helper_check_plane_state() - Check plane state for validity | |
738 | * @plane_state: plane state to check | |
739 | * @crtc_state: crtc state to check | |
a01cb8ba VS |
740 | * @min_scale: minimum @src:@dest scaling factor in 16.16 fixed point |
741 | * @max_scale: maximum @src:@dest scaling factor in 16.16 fixed point | |
742 | * @can_position: is it legal to position the plane such that it | |
743 | * doesn't cover the entire crtc? This will generally | |
744 | * only be false for primary planes. | |
745 | * @can_update_disabled: can the plane be updated while the crtc | |
746 | * is disabled? | |
747 | * | |
748 | * Checks that a desired plane update is valid, and updates various | |
749 | * bits of derived state (clipped coordinates etc.). Drivers that provide | |
750 | * their own plane handling rather than helper-provided implementations may | |
751 | * still wish to call this function to avoid duplication of error checking | |
752 | * code. | |
753 | * | |
754 | * RETURNS: | |
755 | * Zero if update appears valid, error code on failure | |
756 | */ | |
757 | int drm_atomic_helper_check_plane_state(struct drm_plane_state *plane_state, | |
758 | const struct drm_crtc_state *crtc_state, | |
a01cb8ba VS |
759 | int min_scale, |
760 | int max_scale, | |
761 | bool can_position, | |
762 | bool can_update_disabled) | |
763 | { | |
764 | struct drm_framebuffer *fb = plane_state->fb; | |
765 | struct drm_rect *src = &plane_state->src; | |
766 | struct drm_rect *dst = &plane_state->dst; | |
767 | unsigned int rotation = plane_state->rotation; | |
81af63a4 | 768 | struct drm_rect clip = {}; |
a01cb8ba VS |
769 | int hscale, vscale; |
770 | ||
771 | WARN_ON(plane_state->crtc && plane_state->crtc != crtc_state->crtc); | |
772 | ||
773 | *src = drm_plane_state_src(plane_state); | |
774 | *dst = drm_plane_state_dest(plane_state); | |
775 | ||
776 | if (!fb) { | |
777 | plane_state->visible = false; | |
778 | return 0; | |
779 | } | |
780 | ||
781 | /* crtc should only be NULL when disabling (i.e., !fb) */ | |
782 | if (WARN_ON(!plane_state->crtc)) { | |
783 | plane_state->visible = false; | |
784 | return 0; | |
785 | } | |
786 | ||
787 | if (!crtc_state->enable && !can_update_disabled) { | |
788 | DRM_DEBUG_KMS("Cannot update plane of a disabled CRTC.\n"); | |
789 | return -EINVAL; | |
790 | } | |
791 | ||
792 | drm_rect_rotate(src, fb->width << 16, fb->height << 16, rotation); | |
793 | ||
794 | /* Check scaling */ | |
795 | hscale = drm_rect_calc_hscale(src, dst, min_scale, max_scale); | |
796 | vscale = drm_rect_calc_vscale(src, dst, min_scale, max_scale); | |
797 | if (hscale < 0 || vscale < 0) { | |
798 | DRM_DEBUG_KMS("Invalid scaling of plane\n"); | |
799 | drm_rect_debug_print("src: ", &plane_state->src, true); | |
800 | drm_rect_debug_print("dst: ", &plane_state->dst, false); | |
801 | return -ERANGE; | |
802 | } | |
803 | ||
81af63a4 VS |
804 | if (crtc_state->enable) |
805 | drm_mode_get_hv_timing(&crtc_state->mode, &clip.x2, &clip.y2); | |
806 | ||
f96bdf56 | 807 | plane_state->visible = drm_rect_clip_scaled(src, dst, &clip); |
a01cb8ba VS |
808 | |
809 | drm_rect_rotate_inv(src, fb->width << 16, fb->height << 16, rotation); | |
810 | ||
811 | if (!plane_state->visible) | |
812 | /* | |
813 | * Plane isn't visible; some drivers can handle this | |
814 | * so we just return success here. Drivers that can't | |
815 | * (including those that use the primary plane helper's | |
816 | * update function) will return an error from their | |
817 | * update_plane handler. | |
818 | */ | |
819 | return 0; | |
820 | ||
81af63a4 | 821 | if (!can_position && !drm_rect_equals(dst, &clip)) { |
a01cb8ba VS |
822 | DRM_DEBUG_KMS("Plane must cover entire CRTC\n"); |
823 | drm_rect_debug_print("dst: ", dst, false); | |
81af63a4 | 824 | drm_rect_debug_print("clip: ", &clip, false); |
a01cb8ba VS |
825 | return -EINVAL; |
826 | } | |
827 | ||
828 | return 0; | |
829 | } | |
830 | EXPORT_SYMBOL(drm_atomic_helper_check_plane_state); | |
831 | ||
c2fcd274 | 832 | /** |
f98bd3ef | 833 | * drm_atomic_helper_check_planes - validate state object for planes changes |
c2fcd274 DV |
834 | * @dev: DRM device |
835 | * @state: the driver state object | |
836 | * | |
837 | * Check the state object to see if the requested state is physically possible. | |
d9b13620 | 838 | * This does all the plane update related checks using by calling into the |
6806cdf9 DV |
839 | * &drm_crtc_helper_funcs.atomic_check and &drm_plane_helper_funcs.atomic_check |
840 | * hooks provided by the driver. | |
c2fcd274 | 841 | * |
6806cdf9 | 842 | * It also sets &drm_crtc_state.planes_changed to indicate that a crtc has |
fc596660 ML |
843 | * updated planes. |
844 | * | |
c39032a8 | 845 | * RETURNS: |
c2fcd274 DV |
846 | * Zero for success or -errno |
847 | */ | |
d9b13620 DV |
848 | int |
849 | drm_atomic_helper_check_planes(struct drm_device *dev, | |
850 | struct drm_atomic_state *state) | |
c2fcd274 | 851 | { |
df63b999 | 852 | struct drm_crtc *crtc; |
415c3ac3 | 853 | struct drm_crtc_state *new_crtc_state; |
df63b999 | 854 | struct drm_plane *plane; |
415c3ac3 | 855 | struct drm_plane_state *new_plane_state, *old_plane_state; |
c2fcd274 DV |
856 | int i, ret = 0; |
857 | ||
415c3ac3 | 858 | for_each_oldnew_plane_in_state(state, plane, old_plane_state, new_plane_state, i) { |
b5ceff20 | 859 | const struct drm_plane_helper_funcs *funcs; |
c2fcd274 | 860 | |
869e188a DV |
861 | WARN_ON(!drm_modeset_is_locked(&plane->mutex)); |
862 | ||
c2fcd274 DV |
863 | funcs = plane->helper_private; |
864 | ||
415c3ac3 | 865 | drm_atomic_helper_plane_changed(state, old_plane_state, new_plane_state, plane); |
c2fcd274 | 866 | |
d9778b40 DR |
867 | drm_atomic_helper_check_plane_damage(state, new_plane_state); |
868 | ||
c2fcd274 DV |
869 | if (!funcs || !funcs->atomic_check) |
870 | continue; | |
871 | ||
415c3ac3 | 872 | ret = funcs->atomic_check(plane, new_plane_state); |
c2fcd274 | 873 | if (ret) { |
9f4c97a2 VS |
874 | DRM_DEBUG_ATOMIC("[PLANE:%d:%s] atomic driver check failed\n", |
875 | plane->base.id, plane->name); | |
c2fcd274 DV |
876 | return ret; |
877 | } | |
878 | } | |
879 | ||
415c3ac3 | 880 | for_each_new_crtc_in_state(state, crtc, new_crtc_state, i) { |
b5ceff20 | 881 | const struct drm_crtc_helper_funcs *funcs; |
c2fcd274 DV |
882 | |
883 | funcs = crtc->helper_private; | |
884 | ||
885 | if (!funcs || !funcs->atomic_check) | |
886 | continue; | |
887 | ||
415c3ac3 | 888 | ret = funcs->atomic_check(crtc, new_crtc_state); |
c2fcd274 | 889 | if (ret) { |
fa3ab4c2 VS |
890 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] atomic driver check failed\n", |
891 | crtc->base.id, crtc->name); | |
c2fcd274 DV |
892 | return ret; |
893 | } | |
894 | } | |
895 | ||
d9b13620 DV |
896 | return ret; |
897 | } | |
898 | EXPORT_SYMBOL(drm_atomic_helper_check_planes); | |
899 | ||
900 | /** | |
901 | * drm_atomic_helper_check - validate state object | |
902 | * @dev: DRM device | |
903 | * @state: the driver state object | |
904 | * | |
905 | * Check the state object to see if the requested state is physically possible. | |
906 | * Only crtcs and planes have check callbacks, so for any additional (global) | |
907 | * checking that a driver needs it can simply wrap that around this function. | |
6806cdf9 DV |
908 | * Drivers without such needs can directly use this as their |
909 | * &drm_mode_config_funcs.atomic_check callback. | |
d9b13620 | 910 | * |
b4274fbe DV |
911 | * This just wraps the two parts of the state checking for planes and modeset |
912 | * state in the default order: First it calls drm_atomic_helper_check_modeset() | |
913 | * and then drm_atomic_helper_check_planes(). The assumption is that the | |
6806cdf9 DV |
914 | * @drm_plane_helper_funcs.atomic_check and @drm_crtc_helper_funcs.atomic_check |
915 | * functions depend upon an updated adjusted_mode.clock to e.g. properly compute | |
916 | * watermarks. | |
b4274fbe | 917 | * |
49efffc7 PU |
918 | * Note that zpos normalization will add all enable planes to the state which |
919 | * might not desired for some drivers. | |
920 | * For example enable/disable of a cursor plane which have fixed zpos value | |
921 | * would trigger all other enabled planes to be forced to the state change. | |
922 | * | |
c39032a8 | 923 | * RETURNS: |
d9b13620 DV |
924 | * Zero for success or -errno |
925 | */ | |
926 | int drm_atomic_helper_check(struct drm_device *dev, | |
927 | struct drm_atomic_state *state) | |
928 | { | |
929 | int ret; | |
930 | ||
b4274fbe | 931 | ret = drm_atomic_helper_check_modeset(dev, state); |
d9b13620 DV |
932 | if (ret) |
933 | return ret; | |
934 | ||
49efffc7 PU |
935 | if (dev->mode_config.normalize_zpos) { |
936 | ret = drm_atomic_normalize_zpos(dev, state); | |
937 | if (ret) | |
938 | return ret; | |
939 | } | |
940 | ||
b4274fbe | 941 | ret = drm_atomic_helper_check_planes(dev, state); |
934ce1c2 RC |
942 | if (ret) |
943 | return ret; | |
944 | ||
fef9df8b GP |
945 | if (state->legacy_cursor_update) |
946 | state->async_update = !drm_atomic_helper_async_check(dev, state); | |
947 | ||
1452c25b SP |
948 | drm_self_refresh_helper_alter_state(state); |
949 | ||
c2fcd274 DV |
950 | return ret; |
951 | } | |
952 | EXPORT_SYMBOL(drm_atomic_helper_check); | |
953 | ||
1452c25b SP |
954 | static bool |
955 | crtc_needs_disable(struct drm_crtc_state *old_state, | |
956 | struct drm_crtc_state *new_state) | |
957 | { | |
958 | /* | |
959 | * No new_state means the crtc is off, so the only criteria is whether | |
960 | * it's currently active or in self refresh mode. | |
961 | */ | |
962 | if (!new_state) | |
963 | return drm_atomic_crtc_effectively_active(old_state); | |
964 | ||
965 | /* | |
966 | * We need to run through the crtc_funcs->disable() function if the crtc | |
967 | * is currently on, if it's transitioning to self refresh mode, or if | |
968 | * it's in self refresh mode and needs to be fully disabled. | |
969 | */ | |
970 | return old_state->active || | |
971 | (old_state->self_refresh_active && !new_state->enable) || | |
972 | new_state->self_refresh_active; | |
973 | } | |
974 | ||
623369e5 DV |
975 | static void |
976 | disable_outputs(struct drm_device *dev, struct drm_atomic_state *old_state) | |
977 | { | |
df63b999 | 978 | struct drm_connector *connector; |
415c3ac3 | 979 | struct drm_connector_state *old_conn_state, *new_conn_state; |
df63b999 | 980 | struct drm_crtc *crtc; |
415c3ac3 | 981 | struct drm_crtc_state *old_crtc_state, *new_crtc_state; |
623369e5 DV |
982 | int i; |
983 | ||
415c3ac3 | 984 | for_each_oldnew_connector_in_state(old_state, connector, old_conn_state, new_conn_state, i) { |
b5ceff20 | 985 | const struct drm_encoder_helper_funcs *funcs; |
623369e5 DV |
986 | struct drm_encoder *encoder; |
987 | ||
623369e5 DV |
988 | /* Shut down everything that's in the changeset and currently |
989 | * still on. So need to check the old, saved state. */ | |
df63b999 | 990 | if (!old_conn_state->crtc) |
623369e5 DV |
991 | continue; |
992 | ||
b4d93679 | 993 | old_crtc_state = drm_atomic_get_old_crtc_state(old_state, old_conn_state->crtc); |
eab3bbef | 994 | |
1452c25b SP |
995 | if (new_conn_state->crtc) |
996 | new_crtc_state = drm_atomic_get_new_crtc_state( | |
997 | old_state, | |
998 | new_conn_state->crtc); | |
999 | else | |
1000 | new_crtc_state = NULL; | |
1001 | ||
1002 | if (!crtc_needs_disable(old_crtc_state, new_crtc_state) || | |
2465ff62 | 1003 | !drm_atomic_crtc_needs_modeset(old_conn_state->crtc->state)) |
eab3bbef DV |
1004 | continue; |
1005 | ||
46df9adb | 1006 | encoder = old_conn_state->best_encoder; |
623369e5 | 1007 | |
46df9adb RC |
1008 | /* We shouldn't get this far if we didn't previously have |
1009 | * an encoder.. but WARN_ON() rather than explode. | |
1010 | */ | |
1011 | if (WARN_ON(!encoder)) | |
623369e5 DV |
1012 | continue; |
1013 | ||
1014 | funcs = encoder->helper_private; | |
1015 | ||
17a38d9c DV |
1016 | DRM_DEBUG_ATOMIC("disabling [ENCODER:%d:%s]\n", |
1017 | encoder->base.id, encoder->name); | |
95d6eb3b | 1018 | |
623369e5 DV |
1019 | /* |
1020 | * Each encoder has at most one connector (since we always steal | |
f98bd3ef | 1021 | * it away), so we won't call disable hooks twice. |
623369e5 | 1022 | */ |
5ade071b | 1023 | drm_atomic_bridge_disable(encoder->bridge, old_state); |
623369e5 DV |
1024 | |
1025 | /* Right function depends upon target state. */ | |
2827635e | 1026 | if (funcs) { |
43c76d72 SP |
1027 | if (funcs->atomic_disable) |
1028 | funcs->atomic_disable(encoder, old_state); | |
1029 | else if (new_conn_state->crtc && funcs->prepare) | |
2827635e NT |
1030 | funcs->prepare(encoder); |
1031 | else if (funcs->disable) | |
1032 | funcs->disable(encoder); | |
1033 | else if (funcs->dpms) | |
1034 | funcs->dpms(encoder, DRM_MODE_DPMS_OFF); | |
1035 | } | |
623369e5 | 1036 | |
5ade071b | 1037 | drm_atomic_bridge_post_disable(encoder->bridge, old_state); |
623369e5 DV |
1038 | } |
1039 | ||
415c3ac3 | 1040 | for_each_oldnew_crtc_in_state(old_state, crtc, old_crtc_state, new_crtc_state, i) { |
b5ceff20 | 1041 | const struct drm_crtc_helper_funcs *funcs; |
84014b0a | 1042 | int ret; |
623369e5 DV |
1043 | |
1044 | /* Shut down everything that needs a full modeset. */ | |
415c3ac3 | 1045 | if (!drm_atomic_crtc_needs_modeset(new_crtc_state)) |
eab3bbef DV |
1046 | continue; |
1047 | ||
1452c25b | 1048 | if (!crtc_needs_disable(old_crtc_state, new_crtc_state)) |
623369e5 DV |
1049 | continue; |
1050 | ||
1051 | funcs = crtc->helper_private; | |
1052 | ||
fa3ab4c2 VS |
1053 | DRM_DEBUG_ATOMIC("disabling [CRTC:%d:%s]\n", |
1054 | crtc->base.id, crtc->name); | |
95d6eb3b DV |
1055 | |
1056 | ||
623369e5 | 1057 | /* Right function depends upon target state. */ |
415c3ac3 | 1058 | if (new_crtc_state->enable && funcs->prepare) |
623369e5 | 1059 | funcs->prepare(crtc); |
c9ac8b4c LY |
1060 | else if (funcs->atomic_disable) |
1061 | funcs->atomic_disable(crtc, old_crtc_state); | |
623369e5 DV |
1062 | else if (funcs->disable) |
1063 | funcs->disable(crtc); | |
fe616928 | 1064 | else if (funcs->dpms) |
623369e5 | 1065 | funcs->dpms(crtc, DRM_MODE_DPMS_OFF); |
84014b0a DV |
1066 | |
1067 | if (!(dev->irq_enabled && dev->num_crtcs)) | |
1068 | continue; | |
1069 | ||
1070 | ret = drm_crtc_vblank_get(crtc); | |
1071 | WARN_ONCE(ret != -EINVAL, "driver forgot to call drm_crtc_vblank_off()\n"); | |
1072 | if (ret == 0) | |
1073 | drm_crtc_vblank_put(crtc); | |
623369e5 DV |
1074 | } |
1075 | } | |
1076 | ||
4c18d301 DV |
1077 | /** |
1078 | * drm_atomic_helper_update_legacy_modeset_state - update legacy modeset state | |
1079 | * @dev: DRM device | |
1080 | * @old_state: atomic state object with old state structures | |
1081 | * | |
1082 | * This function updates all the various legacy modeset state pointers in | |
1083 | * connectors, encoders and crtcs. It also updates the timestamping constants | |
1084 | * used for precise vblank timestamps by calling | |
1085 | * drm_calc_timestamping_constants(). | |
1086 | * | |
1087 | * Drivers can use this for building their own atomic commit if they don't have | |
1088 | * a pure helper-based modeset implementation. | |
2e2b96ef DV |
1089 | * |
1090 | * Since these updates are not synchronized with lockings, only code paths | |
1091 | * called from &drm_mode_config_helper_funcs.atomic_commit_tail can look at the | |
1092 | * legacy state filled out by this helper. Defacto this means this helper and | |
1093 | * the legacy state pointers are only really useful for transitioning an | |
1094 | * existing driver to the atomic world. | |
4c18d301 DV |
1095 | */ |
1096 | void | |
1097 | drm_atomic_helper_update_legacy_modeset_state(struct drm_device *dev, | |
1098 | struct drm_atomic_state *old_state) | |
623369e5 | 1099 | { |
df63b999 | 1100 | struct drm_connector *connector; |
415c3ac3 | 1101 | struct drm_connector_state *old_conn_state, *new_conn_state; |
df63b999 | 1102 | struct drm_crtc *crtc; |
415c3ac3 | 1103 | struct drm_crtc_state *new_crtc_state; |
623369e5 DV |
1104 | int i; |
1105 | ||
8c10342c | 1106 | /* clear out existing links and update dpms */ |
415c3ac3 | 1107 | for_each_oldnew_connector_in_state(old_state, connector, old_conn_state, new_conn_state, i) { |
8c10342c ML |
1108 | if (connector->encoder) { |
1109 | WARN_ON(!connector->encoder->crtc); | |
1110 | ||
1111 | connector->encoder->crtc = NULL; | |
1112 | connector->encoder = NULL; | |
1113 | } | |
623369e5 | 1114 | |
415c3ac3 | 1115 | crtc = new_conn_state->crtc; |
8c10342c ML |
1116 | if ((!crtc && old_conn_state->crtc) || |
1117 | (crtc && drm_atomic_crtc_needs_modeset(crtc->state))) { | |
8c10342c | 1118 | int mode = DRM_MODE_DPMS_OFF; |
623369e5 | 1119 | |
8c10342c ML |
1120 | if (crtc && crtc->state->active) |
1121 | mode = DRM_MODE_DPMS_ON; | |
1122 | ||
1123 | connector->dpms = mode; | |
8c10342c | 1124 | } |
623369e5 DV |
1125 | } |
1126 | ||
1127 | /* set new links */ | |
415c3ac3 ML |
1128 | for_each_new_connector_in_state(old_state, connector, new_conn_state, i) { |
1129 | if (!new_conn_state->crtc) | |
623369e5 DV |
1130 | continue; |
1131 | ||
415c3ac3 | 1132 | if (WARN_ON(!new_conn_state->best_encoder)) |
623369e5 DV |
1133 | continue; |
1134 | ||
415c3ac3 ML |
1135 | connector->encoder = new_conn_state->best_encoder; |
1136 | connector->encoder->crtc = new_conn_state->crtc; | |
623369e5 DV |
1137 | } |
1138 | ||
1139 | /* set legacy state in the crtc structure */ | |
415c3ac3 | 1140 | for_each_new_crtc_in_state(old_state, crtc, new_crtc_state, i) { |
2660801f | 1141 | struct drm_plane *primary = crtc->primary; |
b4d93679 | 1142 | struct drm_plane_state *new_plane_state; |
2660801f | 1143 | |
415c3ac3 ML |
1144 | crtc->mode = new_crtc_state->mode; |
1145 | crtc->enabled = new_crtc_state->enable; | |
2660801f | 1146 | |
b4d93679 ML |
1147 | new_plane_state = |
1148 | drm_atomic_get_new_plane_state(old_state, primary); | |
1149 | ||
1150 | if (new_plane_state && new_plane_state->crtc == crtc) { | |
1151 | crtc->x = new_plane_state->src_x >> 16; | |
1152 | crtc->y = new_plane_state->src_y >> 16; | |
2660801f | 1153 | } |
3d51d2d2 | 1154 | |
415c3ac3 | 1155 | if (new_crtc_state->enable) |
3d51d2d2 | 1156 | drm_calc_timestamping_constants(crtc, |
415c3ac3 | 1157 | &new_crtc_state->adjusted_mode); |
623369e5 DV |
1158 | } |
1159 | } | |
4c18d301 | 1160 | EXPORT_SYMBOL(drm_atomic_helper_update_legacy_modeset_state); |
623369e5 DV |
1161 | |
1162 | static void | |
1163 | crtc_set_mode(struct drm_device *dev, struct drm_atomic_state *old_state) | |
1164 | { | |
df63b999 | 1165 | struct drm_crtc *crtc; |
415c3ac3 | 1166 | struct drm_crtc_state *new_crtc_state; |
df63b999 | 1167 | struct drm_connector *connector; |
415c3ac3 | 1168 | struct drm_connector_state *new_conn_state; |
623369e5 DV |
1169 | int i; |
1170 | ||
415c3ac3 | 1171 | for_each_new_crtc_in_state(old_state, crtc, new_crtc_state, i) { |
b5ceff20 | 1172 | const struct drm_crtc_helper_funcs *funcs; |
623369e5 | 1173 | |
415c3ac3 | 1174 | if (!new_crtc_state->mode_changed) |
623369e5 DV |
1175 | continue; |
1176 | ||
1177 | funcs = crtc->helper_private; | |
1178 | ||
415c3ac3 | 1179 | if (new_crtc_state->enable && funcs->mode_set_nofb) { |
fa3ab4c2 VS |
1180 | DRM_DEBUG_ATOMIC("modeset on [CRTC:%d:%s]\n", |
1181 | crtc->base.id, crtc->name); | |
95d6eb3b | 1182 | |
623369e5 | 1183 | funcs->mode_set_nofb(crtc); |
95d6eb3b | 1184 | } |
623369e5 DV |
1185 | } |
1186 | ||
415c3ac3 | 1187 | for_each_new_connector_in_state(old_state, connector, new_conn_state, i) { |
b5ceff20 | 1188 | const struct drm_encoder_helper_funcs *funcs; |
623369e5 DV |
1189 | struct drm_encoder *encoder; |
1190 | struct drm_display_mode *mode, *adjusted_mode; | |
1191 | ||
415c3ac3 | 1192 | if (!new_conn_state->best_encoder) |
623369e5 DV |
1193 | continue; |
1194 | ||
415c3ac3 | 1195 | encoder = new_conn_state->best_encoder; |
623369e5 | 1196 | funcs = encoder->helper_private; |
415c3ac3 | 1197 | new_crtc_state = new_conn_state->crtc->state; |
623369e5 DV |
1198 | mode = &new_crtc_state->mode; |
1199 | adjusted_mode = &new_crtc_state->adjusted_mode; | |
1200 | ||
eab3bbef DV |
1201 | if (!new_crtc_state->mode_changed) |
1202 | continue; | |
1203 | ||
17a38d9c DV |
1204 | DRM_DEBUG_ATOMIC("modeset on [ENCODER:%d:%s]\n", |
1205 | encoder->base.id, encoder->name); | |
95d6eb3b | 1206 | |
623369e5 DV |
1207 | /* |
1208 | * Each encoder has at most one connector (since we always steal | |
f98bd3ef | 1209 | * it away), so we won't call mode_set hooks twice. |
623369e5 | 1210 | */ |
fe4a11c9 PZ |
1211 | if (funcs && funcs->atomic_mode_set) { |
1212 | funcs->atomic_mode_set(encoder, new_crtc_state, | |
415c3ac3 | 1213 | new_conn_state); |
fe4a11c9 | 1214 | } else if (funcs && funcs->mode_set) { |
c982bd90 | 1215 | funcs->mode_set(encoder, mode, adjusted_mode); |
fe4a11c9 | 1216 | } |
623369e5 | 1217 | |
862e686c | 1218 | drm_bridge_mode_set(encoder->bridge, mode, adjusted_mode); |
623369e5 DV |
1219 | } |
1220 | } | |
1221 | ||
1222 | /** | |
1af434a9 | 1223 | * drm_atomic_helper_commit_modeset_disables - modeset commit to disable outputs |
623369e5 | 1224 | * @dev: DRM device |
a072f809 | 1225 | * @old_state: atomic state object with old state structures |
623369e5 | 1226 | * |
1af434a9 | 1227 | * This function shuts down all the outputs that need to be shut down and |
623369e5 | 1228 | * prepares them (if required) with the new mode. |
1af434a9 | 1229 | * |
60acc4eb | 1230 | * For compatibility with legacy crtc helpers this should be called before |
1af434a9 DV |
1231 | * drm_atomic_helper_commit_planes(), which is what the default commit function |
1232 | * does. But drivers with different needs can group the modeset commits together | |
1233 | * and do the plane commits at the end. This is useful for drivers doing runtime | |
1234 | * PM since planes updates then only happen when the CRTC is actually enabled. | |
623369e5 | 1235 | */ |
1af434a9 DV |
1236 | void drm_atomic_helper_commit_modeset_disables(struct drm_device *dev, |
1237 | struct drm_atomic_state *old_state) | |
623369e5 | 1238 | { |
a072f809 | 1239 | disable_outputs(dev, old_state); |
4c18d301 DV |
1240 | |
1241 | drm_atomic_helper_update_legacy_modeset_state(dev, old_state); | |
1242 | ||
a072f809 | 1243 | crtc_set_mode(dev, old_state); |
623369e5 | 1244 | } |
1af434a9 | 1245 | EXPORT_SYMBOL(drm_atomic_helper_commit_modeset_disables); |
623369e5 | 1246 | |
935774cd BS |
1247 | static void drm_atomic_helper_commit_writebacks(struct drm_device *dev, |
1248 | struct drm_atomic_state *old_state) | |
1249 | { | |
1250 | struct drm_connector *connector; | |
1251 | struct drm_connector_state *new_conn_state; | |
1252 | int i; | |
1253 | ||
1254 | for_each_new_connector_in_state(old_state, connector, new_conn_state, i) { | |
1255 | const struct drm_connector_helper_funcs *funcs; | |
1256 | ||
1257 | funcs = connector->helper_private; | |
814bde99 BB |
1258 | if (!funcs->atomic_commit) |
1259 | continue; | |
935774cd BS |
1260 | |
1261 | if (new_conn_state->writeback_job && new_conn_state->writeback_job->fb) { | |
1262 | WARN_ON(connector->connector_type != DRM_MODE_CONNECTOR_WRITEBACK); | |
425132fd | 1263 | funcs->atomic_commit(connector, new_conn_state); |
935774cd BS |
1264 | } |
1265 | } | |
1266 | } | |
1267 | ||
623369e5 | 1268 | /** |
1af434a9 | 1269 | * drm_atomic_helper_commit_modeset_enables - modeset commit to enable outputs |
623369e5 DV |
1270 | * @dev: DRM device |
1271 | * @old_state: atomic state object with old state structures | |
1272 | * | |
1af434a9 DV |
1273 | * This function enables all the outputs with the new configuration which had to |
1274 | * be turned off for the update. | |
1275 | * | |
60acc4eb | 1276 | * For compatibility with legacy crtc helpers this should be called after |
1af434a9 DV |
1277 | * drm_atomic_helper_commit_planes(), which is what the default commit function |
1278 | * does. But drivers with different needs can group the modeset commits together | |
1279 | * and do the plane commits at the end. This is useful for drivers doing runtime | |
1280 | * PM since planes updates then only happen when the CRTC is actually enabled. | |
623369e5 | 1281 | */ |
1af434a9 DV |
1282 | void drm_atomic_helper_commit_modeset_enables(struct drm_device *dev, |
1283 | struct drm_atomic_state *old_state) | |
623369e5 | 1284 | { |
df63b999 | 1285 | struct drm_crtc *crtc; |
0b20a0f8 | 1286 | struct drm_crtc_state *old_crtc_state; |
415c3ac3 | 1287 | struct drm_crtc_state *new_crtc_state; |
df63b999 | 1288 | struct drm_connector *connector; |
415c3ac3 | 1289 | struct drm_connector_state *new_conn_state; |
623369e5 DV |
1290 | int i; |
1291 | ||
0b20a0f8 | 1292 | for_each_oldnew_crtc_in_state(old_state, crtc, old_crtc_state, new_crtc_state, i) { |
b5ceff20 | 1293 | const struct drm_crtc_helper_funcs *funcs; |
623369e5 DV |
1294 | |
1295 | /* Need to filter out CRTCs where only planes change. */ | |
415c3ac3 | 1296 | if (!drm_atomic_crtc_needs_modeset(new_crtc_state)) |
eab3bbef DV |
1297 | continue; |
1298 | ||
415c3ac3 | 1299 | if (!new_crtc_state->active) |
623369e5 DV |
1300 | continue; |
1301 | ||
1302 | funcs = crtc->helper_private; | |
1303 | ||
415c3ac3 | 1304 | if (new_crtc_state->enable) { |
fa3ab4c2 VS |
1305 | DRM_DEBUG_ATOMIC("enabling [CRTC:%d:%s]\n", |
1306 | crtc->base.id, crtc->name); | |
0b20a0f8 LP |
1307 | if (funcs->atomic_enable) |
1308 | funcs->atomic_enable(crtc, old_crtc_state); | |
fe616928 | 1309 | else if (funcs->commit) |
ee0a89cf DV |
1310 | funcs->commit(crtc); |
1311 | } | |
623369e5 DV |
1312 | } |
1313 | ||
415c3ac3 | 1314 | for_each_new_connector_in_state(old_state, connector, new_conn_state, i) { |
b5ceff20 | 1315 | const struct drm_encoder_helper_funcs *funcs; |
623369e5 DV |
1316 | struct drm_encoder *encoder; |
1317 | ||
415c3ac3 | 1318 | if (!new_conn_state->best_encoder) |
623369e5 DV |
1319 | continue; |
1320 | ||
415c3ac3 ML |
1321 | if (!new_conn_state->crtc->state->active || |
1322 | !drm_atomic_crtc_needs_modeset(new_conn_state->crtc->state)) | |
eab3bbef DV |
1323 | continue; |
1324 | ||
415c3ac3 | 1325 | encoder = new_conn_state->best_encoder; |
623369e5 DV |
1326 | funcs = encoder->helper_private; |
1327 | ||
17a38d9c DV |
1328 | DRM_DEBUG_ATOMIC("enabling [ENCODER:%d:%s]\n", |
1329 | encoder->base.id, encoder->name); | |
95d6eb3b | 1330 | |
623369e5 DV |
1331 | /* |
1332 | * Each encoder has at most one connector (since we always steal | |
f98bd3ef | 1333 | * it away), so we won't call enable hooks twice. |
623369e5 | 1334 | */ |
5ade071b | 1335 | drm_atomic_bridge_pre_enable(encoder->bridge, old_state); |
623369e5 | 1336 | |
2827635e | 1337 | if (funcs) { |
43c76d72 SP |
1338 | if (funcs->atomic_enable) |
1339 | funcs->atomic_enable(encoder, old_state); | |
1340 | else if (funcs->enable) | |
2827635e NT |
1341 | funcs->enable(encoder); |
1342 | else if (funcs->commit) | |
1343 | funcs->commit(encoder); | |
1344 | } | |
623369e5 | 1345 | |
5ade071b | 1346 | drm_atomic_bridge_enable(encoder->bridge, old_state); |
623369e5 | 1347 | } |
935774cd BS |
1348 | |
1349 | drm_atomic_helper_commit_writebacks(dev, old_state); | |
623369e5 | 1350 | } |
1af434a9 | 1351 | EXPORT_SYMBOL(drm_atomic_helper_commit_modeset_enables); |
623369e5 | 1352 | |
4c5b7f3a RC |
1353 | /** |
1354 | * drm_atomic_helper_wait_for_fences - wait for fences stashed in plane state | |
1355 | * @dev: DRM device | |
1356 | * @state: atomic state object with old state structures | |
1ea0c02e DV |
1357 | * @pre_swap: If true, do an interruptible wait, and @state is the new state. |
1358 | * Otherwise @state is the old state. | |
4c5b7f3a RC |
1359 | * |
1360 | * For implicit sync, driver should fish the exclusive fence out from the | |
1361 | * incoming fb's and stash it in the drm_plane_state. This is called after | |
1362 | * drm_atomic_helper_swap_state() so it uses the current plane state (and | |
1363 | * just uses the atomic state to find the changed planes) | |
f6ce410a | 1364 | * |
1ea0c02e DV |
1365 | * Note that @pre_swap is needed since the point where we block for fences moves |
1366 | * around depending upon whether an atomic commit is blocking or | |
42590372 GP |
1367 | * non-blocking. For non-blocking commit all waiting needs to happen after |
1368 | * drm_atomic_helper_swap_state() is called, but for blocking commits we want | |
1ea0c02e DV |
1369 | * to wait **before** we do anything that can't be easily rolled back. That is |
1370 | * before we call drm_atomic_helper_swap_state(). | |
1371 | * | |
f54d1867 | 1372 | * Returns zero if success or < 0 if dma_fence_wait() fails. |
4c5b7f3a | 1373 | */ |
f6ce410a GP |
1374 | int drm_atomic_helper_wait_for_fences(struct drm_device *dev, |
1375 | struct drm_atomic_state *state, | |
1376 | bool pre_swap) | |
e2330f07 | 1377 | { |
df63b999 | 1378 | struct drm_plane *plane; |
415c3ac3 | 1379 | struct drm_plane_state *new_plane_state; |
f6ce410a | 1380 | int i, ret; |
e2330f07 | 1381 | |
415c3ac3 ML |
1382 | for_each_new_plane_in_state(state, plane, new_plane_state, i) { |
1383 | if (!new_plane_state->fence) | |
e2330f07 DV |
1384 | continue; |
1385 | ||
415c3ac3 | 1386 | WARN_ON(!new_plane_state->fb); |
f6ce410a GP |
1387 | |
1388 | /* | |
1389 | * If waiting for fences pre-swap (ie: nonblock), userspace can | |
1390 | * still interrupt the operation. Instead of blocking until the | |
1391 | * timer expires, make the wait interruptible. | |
1392 | */ | |
415c3ac3 | 1393 | ret = dma_fence_wait(new_plane_state->fence, pre_swap); |
f6ce410a GP |
1394 | if (ret) |
1395 | return ret; | |
e2330f07 | 1396 | |
415c3ac3 ML |
1397 | dma_fence_put(new_plane_state->fence); |
1398 | new_plane_state->fence = NULL; | |
e2330f07 | 1399 | } |
f6ce410a GP |
1400 | |
1401 | return 0; | |
e2330f07 | 1402 | } |
4c5b7f3a | 1403 | EXPORT_SYMBOL(drm_atomic_helper_wait_for_fences); |
e2330f07 | 1404 | |
5ee3229c RC |
1405 | /** |
1406 | * drm_atomic_helper_wait_for_vblanks - wait for vblank on crtcs | |
1407 | * @dev: DRM device | |
1408 | * @old_state: atomic state object with old state structures | |
1409 | * | |
1410 | * Helper to, after atomic commit, wait for vblanks on all effected | |
1411 | * crtcs (ie. before cleaning up old framebuffers using | |
01086487 | 1412 | * drm_atomic_helper_cleanup_planes()). It will only wait on CRTCs where the |
ab58e338 DV |
1413 | * framebuffers have actually changed to optimize for the legacy cursor and |
1414 | * plane update use-case. | |
01086487 BB |
1415 | * |
1416 | * Drivers using the nonblocking commit tracking support initialized by calling | |
1417 | * drm_atomic_helper_setup_commit() should look at | |
1418 | * drm_atomic_helper_wait_for_flip_done() as an alternative. | |
5ee3229c RC |
1419 | */ |
1420 | void | |
1421 | drm_atomic_helper_wait_for_vblanks(struct drm_device *dev, | |
1422 | struct drm_atomic_state *old_state) | |
623369e5 DV |
1423 | { |
1424 | struct drm_crtc *crtc; | |
415c3ac3 | 1425 | struct drm_crtc_state *old_crtc_state, *new_crtc_state; |
623369e5 | 1426 | int i, ret; |
bdc57146 | 1427 | unsigned crtc_mask = 0; |
623369e5 | 1428 | |
bdc57146 ML |
1429 | /* |
1430 | * Legacy cursor ioctls are completely unsynced, and userspace | |
1431 | * relies on that (by doing tons of cursor updates). | |
1432 | */ | |
1433 | if (old_state->legacy_cursor_update) | |
1434 | return; | |
623369e5 | 1435 | |
415c3ac3 | 1436 | for_each_oldnew_crtc_in_state(old_state, crtc, old_crtc_state, new_crtc_state, i) { |
a76dfe35 | 1437 | if (!new_crtc_state->active) |
ab58e338 DV |
1438 | continue; |
1439 | ||
623369e5 DV |
1440 | ret = drm_crtc_vblank_get(crtc); |
1441 | if (ret != 0) | |
1442 | continue; | |
1443 | ||
bdc57146 ML |
1444 | crtc_mask |= drm_crtc_mask(crtc); |
1445 | old_state->crtcs[i].last_vblank_count = drm_crtc_vblank_count(crtc); | |
623369e5 DV |
1446 | } |
1447 | ||
415c3ac3 | 1448 | for_each_old_crtc_in_state(old_state, crtc, old_crtc_state, i) { |
bdc57146 | 1449 | if (!(crtc_mask & drm_crtc_mask(crtc))) |
623369e5 DV |
1450 | continue; |
1451 | ||
1452 | ret = wait_event_timeout(dev->vblank[i].queue, | |
bdc57146 | 1453 | old_state->crtcs[i].last_vblank_count != |
d4853630 | 1454 | drm_crtc_vblank_count(crtc), |
b3198c38 | 1455 | msecs_to_jiffies(100)); |
623369e5 | 1456 | |
6ac7c548 RK |
1457 | WARN(!ret, "[CRTC:%d:%s] vblank wait timed out\n", |
1458 | crtc->base.id, crtc->name); | |
8d4d0d70 | 1459 | |
623369e5 DV |
1460 | drm_crtc_vblank_put(crtc); |
1461 | } | |
1462 | } | |
5ee3229c | 1463 | EXPORT_SYMBOL(drm_atomic_helper_wait_for_vblanks); |
623369e5 | 1464 | |
01086487 BB |
1465 | /** |
1466 | * drm_atomic_helper_wait_for_flip_done - wait for all page flips to be done | |
1467 | * @dev: DRM device | |
1468 | * @old_state: atomic state object with old state structures | |
1469 | * | |
1470 | * Helper to, after atomic commit, wait for page flips on all effected | |
1471 | * crtcs (ie. before cleaning up old framebuffers using | |
1472 | * drm_atomic_helper_cleanup_planes()). Compared to | |
1473 | * drm_atomic_helper_wait_for_vblanks() this waits for the completion of on all | |
1474 | * CRTCs, assuming that cursors-only updates are signalling their completion | |
1475 | * immediately (or using a different path). | |
1476 | * | |
1477 | * This requires that drivers use the nonblocking commit tracking support | |
1478 | * initialized using drm_atomic_helper_setup_commit(). | |
1479 | */ | |
1480 | void drm_atomic_helper_wait_for_flip_done(struct drm_device *dev, | |
1481 | struct drm_atomic_state *old_state) | |
1482 | { | |
01086487 BB |
1483 | struct drm_crtc *crtc; |
1484 | int i; | |
1485 | ||
4364bcb2 LL |
1486 | for (i = 0; i < dev->mode_config.num_crtc; i++) { |
1487 | struct drm_crtc_commit *commit = old_state->crtcs[i].commit; | |
01086487 BB |
1488 | int ret; |
1489 | ||
4364bcb2 LL |
1490 | crtc = old_state->crtcs[i].ptr; |
1491 | ||
1492 | if (!crtc || !commit) | |
01086487 BB |
1493 | continue; |
1494 | ||
1495 | ret = wait_for_completion_timeout(&commit->flip_done, 10 * HZ); | |
1496 | if (ret == 0) | |
1497 | DRM_ERROR("[CRTC:%d:%s] flip_done timed out\n", | |
1498 | crtc->base.id, crtc->name); | |
1499 | } | |
2de42f79 VS |
1500 | |
1501 | if (old_state->fake_commit) | |
1502 | complete_all(&old_state->fake_commit->flip_done); | |
01086487 BB |
1503 | } |
1504 | EXPORT_SYMBOL(drm_atomic_helper_wait_for_flip_done); | |
1505 | ||
623369e5 | 1506 | /** |
9f2a7950 | 1507 | * drm_atomic_helper_commit_tail - commit atomic update to hardware |
1ea0c02e | 1508 | * @old_state: atomic state object with old state structures |
623369e5 | 1509 | * |
6806cdf9 | 1510 | * This is the default implementation for the |
81a099ac MR |
1511 | * &drm_mode_config_helper_funcs.atomic_commit_tail hook, for drivers |
1512 | * that do not support runtime_pm or do not need the CRTC to be | |
1513 | * enabled to perform a commit. Otherwise, see | |
1514 | * drm_atomic_helper_commit_tail_rpm(). | |
623369e5 | 1515 | * |
9f2a7950 | 1516 | * Note that the default ordering of how the various stages are called is to |
81a099ac | 1517 | * match the legacy modeset helper library closest. |
9f2a7950 | 1518 | */ |
1ea0c02e | 1519 | void drm_atomic_helper_commit_tail(struct drm_atomic_state *old_state) |
9f2a7950 | 1520 | { |
1ea0c02e | 1521 | struct drm_device *dev = old_state->dev; |
9f2a7950 | 1522 | |
1ea0c02e | 1523 | drm_atomic_helper_commit_modeset_disables(dev, old_state); |
9f2a7950 | 1524 | |
1ea0c02e | 1525 | drm_atomic_helper_commit_planes(dev, old_state, 0); |
9f2a7950 | 1526 | |
1ea0c02e | 1527 | drm_atomic_helper_commit_modeset_enables(dev, old_state); |
9f2a7950 | 1528 | |
6fb42b66 BB |
1529 | drm_atomic_helper_fake_vblank(old_state); |
1530 | ||
1ea0c02e | 1531 | drm_atomic_helper_commit_hw_done(old_state); |
9f2a7950 | 1532 | |
1ea0c02e | 1533 | drm_atomic_helper_wait_for_vblanks(dev, old_state); |
9f2a7950 | 1534 | |
1ea0c02e | 1535 | drm_atomic_helper_cleanup_planes(dev, old_state); |
9f2a7950 DV |
1536 | } |
1537 | EXPORT_SYMBOL(drm_atomic_helper_commit_tail); | |
1538 | ||
81a099ac MR |
1539 | /** |
1540 | * drm_atomic_helper_commit_tail_rpm - commit atomic update to hardware | |
1541 | * @old_state: new modeset state to be committed | |
1542 | * | |
1543 | * This is an alternative implementation for the | |
1544 | * &drm_mode_config_helper_funcs.atomic_commit_tail hook, for drivers | |
1545 | * that support runtime_pm or need the CRTC to be enabled to perform a | |
1546 | * commit. Otherwise, one should use the default implementation | |
1547 | * drm_atomic_helper_commit_tail(). | |
1548 | */ | |
1549 | void drm_atomic_helper_commit_tail_rpm(struct drm_atomic_state *old_state) | |
1550 | { | |
1551 | struct drm_device *dev = old_state->dev; | |
1552 | ||
1553 | drm_atomic_helper_commit_modeset_disables(dev, old_state); | |
1554 | ||
1555 | drm_atomic_helper_commit_modeset_enables(dev, old_state); | |
1556 | ||
1557 | drm_atomic_helper_commit_planes(dev, old_state, | |
1558 | DRM_PLANE_COMMIT_ACTIVE_ONLY); | |
1559 | ||
6fb42b66 BB |
1560 | drm_atomic_helper_fake_vblank(old_state); |
1561 | ||
81a099ac MR |
1562 | drm_atomic_helper_commit_hw_done(old_state); |
1563 | ||
1564 | drm_atomic_helper_wait_for_vblanks(dev, old_state); | |
1565 | ||
1566 | drm_atomic_helper_cleanup_planes(dev, old_state); | |
1567 | } | |
1568 | EXPORT_SYMBOL(drm_atomic_helper_commit_tail_rpm); | |
1569 | ||
1ea0c02e | 1570 | static void commit_tail(struct drm_atomic_state *old_state) |
9f2a7950 | 1571 | { |
1ea0c02e | 1572 | struct drm_device *dev = old_state->dev; |
a4b10cce | 1573 | const struct drm_mode_config_helper_funcs *funcs; |
86de88cf RC |
1574 | struct drm_crtc_state *new_crtc_state; |
1575 | struct drm_crtc *crtc; | |
d4da4e33 SP |
1576 | ktime_t start; |
1577 | s64 commit_time_ms; | |
86de88cf | 1578 | unsigned int i, new_self_refresh_mask = 0; |
9f2a7950 DV |
1579 | |
1580 | funcs = dev->mode_config.helper_private; | |
1581 | ||
d4da4e33 SP |
1582 | /* |
1583 | * We're measuring the _entire_ commit, so the time will vary depending | |
1584 | * on how many fences and objects are involved. For the purposes of self | |
1585 | * refresh, this is desirable since it'll give us an idea of how | |
1586 | * congested things are. This will inform our decision on how often we | |
1587 | * should enter self refresh after idle. | |
1588 | * | |
1589 | * These times will be averaged out in the self refresh helpers to avoid | |
1590 | * overreacting over one outlier frame | |
1591 | */ | |
1592 | start = ktime_get(); | |
1593 | ||
1ea0c02e | 1594 | drm_atomic_helper_wait_for_fences(dev, old_state, false); |
9f2a7950 | 1595 | |
1ea0c02e | 1596 | drm_atomic_helper_wait_for_dependencies(old_state); |
9f2a7950 | 1597 | |
86de88cf RC |
1598 | /* |
1599 | * We cannot safely access new_crtc_state after | |
1600 | * drm_atomic_helper_commit_hw_done() so figure out which crtc's have | |
1601 | * self-refresh active beforehand: | |
1602 | */ | |
1603 | for_each_new_crtc_in_state(old_state, crtc, new_crtc_state, i) | |
1604 | if (new_crtc_state->self_refresh_active) | |
1605 | new_self_refresh_mask |= BIT(i); | |
1606 | ||
9f2a7950 | 1607 | if (funcs && funcs->atomic_commit_tail) |
1ea0c02e | 1608 | funcs->atomic_commit_tail(old_state); |
9f2a7950 | 1609 | else |
1ea0c02e | 1610 | drm_atomic_helper_commit_tail(old_state); |
9f2a7950 | 1611 | |
d4da4e33 SP |
1612 | commit_time_ms = ktime_ms_delta(ktime_get(), start); |
1613 | if (commit_time_ms > 0) | |
1614 | drm_self_refresh_helper_update_avg_times(old_state, | |
86de88cf RC |
1615 | (unsigned long)commit_time_ms, |
1616 | new_self_refresh_mask); | |
d4da4e33 | 1617 | |
1ea0c02e | 1618 | drm_atomic_helper_commit_cleanup_done(old_state); |
9f2a7950 | 1619 | |
1ea0c02e | 1620 | drm_atomic_state_put(old_state); |
9f2a7950 DV |
1621 | } |
1622 | ||
1623 | static void commit_work(struct work_struct *work) | |
1624 | { | |
1625 | struct drm_atomic_state *state = container_of(work, | |
1626 | struct drm_atomic_state, | |
1627 | commit_work); | |
1628 | commit_tail(state); | |
1629 | } | |
1630 | ||
fef9df8b GP |
1631 | /** |
1632 | * drm_atomic_helper_async_check - check if state can be commited asynchronously | |
1633 | * @dev: DRM device | |
1634 | * @state: the driver state object | |
1635 | * | |
1636 | * This helper will check if it is possible to commit the state asynchronously. | |
1637 | * Async commits are not supposed to swap the states like normal sync commits | |
1638 | * but just do in-place changes on the current state. | |
1639 | * | |
1640 | * It will return 0 if the commit can happen in an asynchronous fashion or error | |
1641 | * if not. Note that error just mean it can't be commited asynchronously, if it | |
1642 | * fails the commit should be treated like a normal synchronous commit. | |
1643 | */ | |
1644 | int drm_atomic_helper_async_check(struct drm_device *dev, | |
1645 | struct drm_atomic_state *state) | |
1646 | { | |
1647 | struct drm_crtc *crtc; | |
1648 | struct drm_crtc_state *crtc_state; | |
de2d8db3 BB |
1649 | struct drm_plane *plane = NULL; |
1650 | struct drm_plane_state *old_plane_state = NULL; | |
1651 | struct drm_plane_state *new_plane_state = NULL; | |
fef9df8b | 1652 | const struct drm_plane_helper_funcs *funcs; |
669c9215 | 1653 | int i, n_planes = 0; |
fef9df8b GP |
1654 | |
1655 | for_each_new_crtc_in_state(state, crtc, crtc_state, i) { | |
1656 | if (drm_atomic_crtc_needs_modeset(crtc_state)) | |
1657 | return -EINVAL; | |
1658 | } | |
1659 | ||
669c9215 | 1660 | for_each_oldnew_plane_in_state(state, plane, old_plane_state, new_plane_state, i) |
fef9df8b | 1661 | n_planes++; |
fef9df8b GP |
1662 | |
1663 | /* FIXME: we support only single plane updates for now */ | |
669c9215 | 1664 | if (n_planes != 1) |
fef9df8b GP |
1665 | return -EINVAL; |
1666 | ||
603ba2df BB |
1667 | if (!new_plane_state->crtc || |
1668 | old_plane_state->crtc != new_plane_state->crtc) | |
fef9df8b GP |
1669 | return -EINVAL; |
1670 | ||
1671 | funcs = plane->helper_private; | |
1672 | if (!funcs->atomic_async_update) | |
1673 | return -EINVAL; | |
1674 | ||
669c9215 | 1675 | if (new_plane_state->fence) |
fef9df8b GP |
1676 | return -EINVAL; |
1677 | ||
1678 | /* | |
1679 | * Don't do an async update if there is an outstanding commit modifying | |
1680 | * the plane. This prevents our async update's changes from getting | |
1681 | * overridden by a previous synchronous update's state. | |
1682 | */ | |
669c9215 ML |
1683 | if (old_plane_state->commit && |
1684 | !try_wait_for_completion(&old_plane_state->commit->hw_done)) | |
1685 | return -EBUSY; | |
fef9df8b | 1686 | |
669c9215 | 1687 | return funcs->atomic_async_check(plane, new_plane_state); |
fef9df8b GP |
1688 | } |
1689 | EXPORT_SYMBOL(drm_atomic_helper_async_check); | |
1690 | ||
1691 | /** | |
1692 | * drm_atomic_helper_async_commit - commit state asynchronously | |
1693 | * @dev: DRM device | |
1694 | * @state: the driver state object | |
1695 | * | |
1696 | * This function commits a state asynchronously, i.e., not vblank | |
1697 | * synchronized. It should be used on a state only when | |
1698 | * drm_atomic_async_check() succeeds. Async commits are not supposed to swap | |
1699 | * the states like normal sync commits, but just do in-place changes on the | |
1700 | * current state. | |
89a4aac0 HK |
1701 | * |
1702 | * TODO: Implement full swap instead of doing in-place changes. | |
fef9df8b GP |
1703 | */ |
1704 | void drm_atomic_helper_async_commit(struct drm_device *dev, | |
1705 | struct drm_atomic_state *state) | |
1706 | { | |
1707 | struct drm_plane *plane; | |
1708 | struct drm_plane_state *plane_state; | |
1709 | const struct drm_plane_helper_funcs *funcs; | |
1710 | int i; | |
1711 | ||
1712 | for_each_new_plane_in_state(state, plane, plane_state, i) { | |
89a4aac0 HK |
1713 | struct drm_framebuffer *new_fb = plane_state->fb; |
1714 | struct drm_framebuffer *old_fb = plane->state->fb; | |
1715 | ||
fef9df8b GP |
1716 | funcs = plane->helper_private; |
1717 | funcs->atomic_async_update(plane, plane_state); | |
02edfd9c BB |
1718 | |
1719 | /* | |
1720 | * ->atomic_async_update() is supposed to update the | |
1721 | * plane->state in-place, make sure at least common | |
1722 | * properties have been properly updated. | |
1723 | */ | |
89a4aac0 | 1724 | WARN_ON_ONCE(plane->state->fb != new_fb); |
02edfd9c BB |
1725 | WARN_ON_ONCE(plane->state->crtc_x != plane_state->crtc_x); |
1726 | WARN_ON_ONCE(plane->state->crtc_y != plane_state->crtc_y); | |
1727 | WARN_ON_ONCE(plane->state->src_x != plane_state->src_x); | |
1728 | WARN_ON_ONCE(plane->state->src_y != plane_state->src_y); | |
89a4aac0 HK |
1729 | |
1730 | /* | |
1731 | * Make sure the FBs have been swapped so that cleanups in the | |
1732 | * new_state performs a cleanup in the old FB. | |
1733 | */ | |
1734 | WARN_ON_ONCE(plane_state->fb != old_fb); | |
fef9df8b GP |
1735 | } |
1736 | } | |
1737 | EXPORT_SYMBOL(drm_atomic_helper_async_commit); | |
1738 | ||
9f2a7950 DV |
1739 | /** |
1740 | * drm_atomic_helper_commit - commit validated state object | |
1741 | * @dev: DRM device | |
1742 | * @state: the driver state object | |
1743 | * @nonblock: whether nonblocking behavior is requested. | |
1744 | * | |
1745 | * This function commits a with drm_atomic_helper_check() pre-validated state | |
1746 | * object. This can still fail when e.g. the framebuffer reservation fails. This | |
1747 | * function implements nonblocking commits, using | |
1748 | * drm_atomic_helper_setup_commit() and related functions. | |
1749 | * | |
9f2a7950 | 1750 | * Committing the actual hardware state is done through the |
1e55a53a | 1751 | * &drm_mode_config_helper_funcs.atomic_commit_tail callback, or its default |
6806cdf9 | 1752 | * implementation drm_atomic_helper_commit_tail(). |
6e48ae32 | 1753 | * |
c39032a8 | 1754 | * RETURNS: |
623369e5 DV |
1755 | * Zero for success or -errno. |
1756 | */ | |
1757 | int drm_atomic_helper_commit(struct drm_device *dev, | |
1758 | struct drm_atomic_state *state, | |
286dbb8d | 1759 | bool nonblock) |
623369e5 DV |
1760 | { |
1761 | int ret; | |
1762 | ||
fef9df8b GP |
1763 | if (state->async_update) { |
1764 | ret = drm_atomic_helper_prepare_planes(dev, state); | |
1765 | if (ret) | |
1766 | return ret; | |
1767 | ||
1768 | drm_atomic_helper_async_commit(dev, state); | |
1769 | drm_atomic_helper_cleanup_planes(dev, state); | |
1770 | ||
1771 | return 0; | |
1772 | } | |
1773 | ||
a095caa7 DV |
1774 | ret = drm_atomic_helper_setup_commit(state, nonblock); |
1775 | if (ret) | |
1776 | return ret; | |
1777 | ||
9f2a7950 DV |
1778 | INIT_WORK(&state->commit_work, commit_work); |
1779 | ||
623369e5 DV |
1780 | ret = drm_atomic_helper_prepare_planes(dev, state); |
1781 | if (ret) | |
1782 | return ret; | |
1783 | ||
f6ce410a GP |
1784 | if (!nonblock) { |
1785 | ret = drm_atomic_helper_wait_for_fences(dev, state, true); | |
c066d231 ML |
1786 | if (ret) |
1787 | goto err; | |
f6ce410a GP |
1788 | } |
1789 | ||
623369e5 DV |
1790 | /* |
1791 | * This is the point of no return - everything below never fails except | |
1792 | * when the hw goes bonghits. Which means we can commit the new state on | |
1793 | * the software side now. | |
1794 | */ | |
1795 | ||
c066d231 ML |
1796 | ret = drm_atomic_helper_swap_state(state, true); |
1797 | if (ret) | |
1798 | goto err; | |
623369e5 DV |
1799 | |
1800 | /* | |
1801 | * Everything below can be run asynchronously without the need to grab | |
f98bd3ef | 1802 | * any modeset locks at all under one condition: It must be guaranteed |
623369e5 DV |
1803 | * that the asynchronous work has either been cancelled (if the driver |
1804 | * supports it, which at least requires that the framebuffers get | |
1805 | * cleaned up with drm_atomic_helper_cleanup_planes()) or completed | |
1806 | * before the new state gets committed on the software side with | |
1807 | * drm_atomic_helper_swap_state(). | |
1808 | * | |
1809 | * This scheme allows new atomic state updates to be prepared and | |
1810 | * checked in parallel to the asynchronous completion of the previous | |
1811 | * update. Which is important since compositors need to figure out the | |
1812 | * composition of the next frame right after having submitted the | |
1813 | * current layout. | |
9f2a7950 DV |
1814 | * |
1815 | * NOTE: Commit work has multiple phases, first hardware commit, then | |
1816 | * cleanup. We want them to overlap, hence need system_unbound_wq to | |
a0689e34 | 1817 | * make sure work items don't artificially stall on each another. |
623369e5 DV |
1818 | */ |
1819 | ||
0853695c | 1820 | drm_atomic_state_get(state); |
9f2a7950 DV |
1821 | if (nonblock) |
1822 | queue_work(system_unbound_wq, &state->commit_work); | |
1823 | else | |
1824 | commit_tail(state); | |
623369e5 DV |
1825 | |
1826 | return 0; | |
c066d231 ML |
1827 | |
1828 | err: | |
1829 | drm_atomic_helper_cleanup_planes(dev, state); | |
1830 | return ret; | |
623369e5 DV |
1831 | } |
1832 | EXPORT_SYMBOL(drm_atomic_helper_commit); | |
1833 | ||
e8c833a7 | 1834 | /** |
286dbb8d | 1835 | * DOC: implementing nonblocking commit |
e8c833a7 | 1836 | * |
9f2a7950 | 1837 | * Nonblocking atomic commits have to be implemented in the following sequence: |
e8c833a7 DV |
1838 | * |
1839 | * 1. Run drm_atomic_helper_prepare_planes() first. This is the only function | |
1840 | * which commit needs to call which can fail, so we want to run it first and | |
1841 | * synchronously. | |
1842 | * | |
286dbb8d | 1843 | * 2. Synchronize with any outstanding nonblocking commit worker threads which |
e8c833a7 DV |
1844 | * might be affected the new state update. This can be done by either cancelling |
1845 | * or flushing the work items, depending upon whether the driver can deal with | |
1846 | * cancelled updates. Note that it is important to ensure that the framebuffer | |
1847 | * cleanup is still done when cancelling. | |
1848 | * | |
9f2a7950 DV |
1849 | * Asynchronous workers need to have sufficient parallelism to be able to run |
1850 | * different atomic commits on different CRTCs in parallel. The simplest way to | |
a0689e34 | 1851 | * achieve this is by running them on the &system_unbound_wq work queue. Note |
9f2a7950 DV |
1852 | * that drivers are not required to split up atomic commits and run an |
1853 | * individual commit in parallel - userspace is supposed to do that if it cares. | |
1854 | * But it might be beneficial to do that for modesets, since those necessarily | |
1855 | * must be done as one global operation, and enabling or disabling a CRTC can | |
1856 | * take a long time. But even that is not required. | |
e8c833a7 DV |
1857 | * |
1858 | * 3. The software state is updated synchronously with | |
26196f7e | 1859 | * drm_atomic_helper_swap_state(). Doing this under the protection of all modeset |
e8c833a7 | 1860 | * locks means concurrent callers never see inconsistent state. And doing this |
286dbb8d ML |
1861 | * while it's guaranteed that no relevant nonblocking worker runs means that |
1862 | * nonblocking workers do not need grab any locks. Actually they must not grab | |
1863 | * locks, for otherwise the work flushing will deadlock. | |
e8c833a7 DV |
1864 | * |
1865 | * 4. Schedule a work item to do all subsequent steps, using the split-out | |
1866 | * commit helpers: a) pre-plane commit b) plane commit c) post-plane commit and | |
1867 | * then cleaning up the framebuffers after the old framebuffer is no longer | |
1868 | * being displayed. | |
9f2a7950 DV |
1869 | * |
1870 | * The above scheme is implemented in the atomic helper libraries in | |
1871 | * drm_atomic_helper_commit() using a bunch of helper functions. See | |
1872 | * drm_atomic_helper_setup_commit() for a starting point. | |
e8c833a7 DV |
1873 | */ |
1874 | ||
a095caa7 DV |
1875 | static int stall_checks(struct drm_crtc *crtc, bool nonblock) |
1876 | { | |
1877 | struct drm_crtc_commit *commit, *stall_commit = NULL; | |
1878 | bool completed = true; | |
1879 | int i; | |
1880 | long ret = 0; | |
1881 | ||
1882 | spin_lock(&crtc->commit_lock); | |
1883 | i = 0; | |
1884 | list_for_each_entry(commit, &crtc->commit_list, commit_entry) { | |
1885 | if (i == 0) { | |
1886 | completed = try_wait_for_completion(&commit->flip_done); | |
1887 | /* Userspace is not allowed to get ahead of the previous | |
1888 | * commit with nonblocking ones. */ | |
1889 | if (!completed && nonblock) { | |
1890 | spin_unlock(&crtc->commit_lock); | |
1891 | return -EBUSY; | |
1892 | } | |
1893 | } else if (i == 1) { | |
f46640b9 | 1894 | stall_commit = drm_crtc_commit_get(commit); |
a095caa7 | 1895 | break; |
723c3e55 | 1896 | } |
a095caa7 DV |
1897 | |
1898 | i++; | |
1899 | } | |
1900 | spin_unlock(&crtc->commit_lock); | |
1901 | ||
1902 | if (!stall_commit) | |
1903 | return 0; | |
1904 | ||
1905 | /* We don't want to let commits get ahead of cleanup work too much, | |
1906 | * stalling on 2nd previous commit means triple-buffer won't ever stall. | |
1907 | */ | |
723c3e55 | 1908 | ret = wait_for_completion_interruptible_timeout(&stall_commit->cleanup_done, |
a095caa7 DV |
1909 | 10*HZ); |
1910 | if (ret == 0) | |
1911 | DRM_ERROR("[CRTC:%d:%s] cleanup_done timed out\n", | |
1912 | crtc->base.id, crtc->name); | |
1913 | ||
1914 | drm_crtc_commit_put(stall_commit); | |
1915 | ||
1916 | return ret < 0 ? ret : 0; | |
1917 | } | |
1918 | ||
899cc5f1 | 1919 | static void release_crtc_commit(struct completion *completion) |
24835e44 DV |
1920 | { |
1921 | struct drm_crtc_commit *commit = container_of(completion, | |
1922 | typeof(*commit), | |
1923 | flip_done); | |
1924 | ||
1925 | drm_crtc_commit_put(commit); | |
1926 | } | |
1927 | ||
21a01abb ML |
1928 | static void init_commit(struct drm_crtc_commit *commit, struct drm_crtc *crtc) |
1929 | { | |
1930 | init_completion(&commit->flip_done); | |
1931 | init_completion(&commit->hw_done); | |
1932 | init_completion(&commit->cleanup_done); | |
1933 | INIT_LIST_HEAD(&commit->commit_entry); | |
1934 | kref_init(&commit->ref); | |
1935 | commit->crtc = crtc; | |
1936 | } | |
1937 | ||
1938 | static struct drm_crtc_commit * | |
1939 | crtc_or_fake_commit(struct drm_atomic_state *state, struct drm_crtc *crtc) | |
1940 | { | |
1941 | if (crtc) { | |
1942 | struct drm_crtc_state *new_crtc_state; | |
1943 | ||
1944 | new_crtc_state = drm_atomic_get_new_crtc_state(state, crtc); | |
1945 | ||
1946 | return new_crtc_state->commit; | |
1947 | } | |
1948 | ||
1949 | if (!state->fake_commit) { | |
1950 | state->fake_commit = kzalloc(sizeof(*state->fake_commit), GFP_KERNEL); | |
1951 | if (!state->fake_commit) | |
1952 | return NULL; | |
1953 | ||
1954 | init_commit(state->fake_commit, NULL); | |
1955 | } | |
1956 | ||
1957 | return state->fake_commit; | |
1958 | } | |
1959 | ||
a095caa7 DV |
1960 | /** |
1961 | * drm_atomic_helper_setup_commit - setup possibly nonblocking commit | |
1962 | * @state: new modeset state to be committed | |
1963 | * @nonblock: whether nonblocking behavior is requested. | |
1964 | * | |
1965 | * This function prepares @state to be used by the atomic helper's support for | |
1966 | * nonblocking commits. Drivers using the nonblocking commit infrastructure | |
6806cdf9 DV |
1967 | * should always call this function from their |
1968 | * &drm_mode_config_funcs.atomic_commit hook. | |
a095caa7 DV |
1969 | * |
1970 | * To be able to use this support drivers need to use a few more helper | |
1971 | * functions. drm_atomic_helper_wait_for_dependencies() must be called before | |
1972 | * actually committing the hardware state, and for nonblocking commits this call | |
1973 | * must be placed in the async worker. See also drm_atomic_helper_swap_state() | |
1e55a53a | 1974 | * and its stall parameter, for when a driver's commit hooks look at the |
6806cdf9 | 1975 | * &drm_crtc.state, &drm_plane.state or &drm_connector.state pointer directly. |
a095caa7 DV |
1976 | * |
1977 | * Completion of the hardware commit step must be signalled using | |
1978 | * drm_atomic_helper_commit_hw_done(). After this step the driver is not allowed | |
1979 | * to read or change any permanent software or hardware modeset state. The only | |
1980 | * exception is state protected by other means than &drm_modeset_lock locks. | |
1981 | * Only the free standing @state with pointers to the old state structures can | |
1982 | * be inspected, e.g. to clean up old buffers using | |
1983 | * drm_atomic_helper_cleanup_planes(). | |
1984 | * | |
1985 | * At the very end, before cleaning up @state drivers must call | |
1986 | * drm_atomic_helper_commit_cleanup_done(). | |
1987 | * | |
1988 | * This is all implemented by in drm_atomic_helper_commit(), giving drivers a | |
9ac07815 | 1989 | * complete and easy-to-use default implementation of the atomic_commit() hook. |
a095caa7 DV |
1990 | * |
1991 | * The tracking of asynchronously executed and still pending commits is done | |
1992 | * using the core structure &drm_crtc_commit. | |
1993 | * | |
1994 | * By default there's no need to clean up resources allocated by this function | |
1995 | * explicitly: drm_atomic_state_default_clear() will take care of that | |
1996 | * automatically. | |
1997 | * | |
1998 | * Returns: | |
1999 | * | |
2000 | * 0 on success. -EBUSY when userspace schedules nonblocking commits too fast, | |
2001 | * -ENOMEM on allocation failures and -EINTR when a signal is pending. | |
2002 | */ | |
2003 | int drm_atomic_helper_setup_commit(struct drm_atomic_state *state, | |
2004 | bool nonblock) | |
2005 | { | |
2006 | struct drm_crtc *crtc; | |
415c3ac3 | 2007 | struct drm_crtc_state *old_crtc_state, *new_crtc_state; |
21a01abb ML |
2008 | struct drm_connector *conn; |
2009 | struct drm_connector_state *old_conn_state, *new_conn_state; | |
2010 | struct drm_plane *plane; | |
2011 | struct drm_plane_state *old_plane_state, *new_plane_state; | |
a095caa7 DV |
2012 | struct drm_crtc_commit *commit; |
2013 | int i, ret; | |
2014 | ||
415c3ac3 | 2015 | for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) { |
a095caa7 DV |
2016 | commit = kzalloc(sizeof(*commit), GFP_KERNEL); |
2017 | if (!commit) | |
2018 | return -ENOMEM; | |
2019 | ||
21a01abb | 2020 | init_commit(commit, crtc); |
a095caa7 | 2021 | |
163bcc2c | 2022 | new_crtc_state->commit = commit; |
a095caa7 DV |
2023 | |
2024 | ret = stall_checks(crtc, nonblock); | |
2025 | if (ret) | |
2026 | return ret; | |
2027 | ||
2028 | /* Drivers only send out events when at least either current or | |
2029 | * new CRTC state is active. Complete right away if everything | |
2030 | * stays off. */ | |
415c3ac3 | 2031 | if (!old_crtc_state->active && !new_crtc_state->active) { |
a095caa7 DV |
2032 | complete_all(&commit->flip_done); |
2033 | continue; | |
2034 | } | |
2035 | ||
2036 | /* Legacy cursor updates are fully unsynced. */ | |
2037 | if (state->legacy_cursor_update) { | |
2038 | complete_all(&commit->flip_done); | |
2039 | continue; | |
2040 | } | |
2041 | ||
415c3ac3 | 2042 | if (!new_crtc_state->event) { |
a095caa7 DV |
2043 | commit->event = kzalloc(sizeof(*commit->event), |
2044 | GFP_KERNEL); | |
2045 | if (!commit->event) | |
2046 | return -ENOMEM; | |
2047 | ||
415c3ac3 | 2048 | new_crtc_state->event = commit->event; |
a095caa7 DV |
2049 | } |
2050 | ||
415c3ac3 ML |
2051 | new_crtc_state->event->base.completion = &commit->flip_done; |
2052 | new_crtc_state->event->base.completion_release = release_crtc_commit; | |
24835e44 | 2053 | drm_crtc_commit_get(commit); |
1c6ceeee LSL |
2054 | |
2055 | commit->abort_completion = true; | |
4364bcb2 LL |
2056 | |
2057 | state->crtcs[i].commit = commit; | |
2058 | drm_crtc_commit_get(commit); | |
a095caa7 DV |
2059 | } |
2060 | ||
21a01abb | 2061 | for_each_oldnew_connector_in_state(state, conn, old_conn_state, new_conn_state, i) { |
21a01abb ML |
2062 | /* Userspace is not allowed to get ahead of the previous |
2063 | * commit with nonblocking ones. */ | |
2064 | if (nonblock && old_conn_state->commit && | |
2065 | !try_wait_for_completion(&old_conn_state->commit->flip_done)) | |
2066 | return -EBUSY; | |
a095caa7 | 2067 | |
1f2d9bdc DV |
2068 | /* Always track connectors explicitly for e.g. link retraining. */ |
2069 | commit = crtc_or_fake_commit(state, new_conn_state->crtc ?: old_conn_state->crtc); | |
21a01abb ML |
2070 | if (!commit) |
2071 | return -ENOMEM; | |
a095caa7 | 2072 | |
21a01abb ML |
2073 | new_conn_state->commit = drm_crtc_commit_get(commit); |
2074 | } | |
2075 | ||
2076 | for_each_oldnew_plane_in_state(state, plane, old_plane_state, new_plane_state, i) { | |
21a01abb ML |
2077 | /* Userspace is not allowed to get ahead of the previous |
2078 | * commit with nonblocking ones. */ | |
2079 | if (nonblock && old_plane_state->commit && | |
2080 | !try_wait_for_completion(&old_plane_state->commit->flip_done)) | |
2081 | return -EBUSY; | |
2082 | ||
1f2d9bdc | 2083 | /* Always track planes explicitly for async pageflip support. */ |
4edd6084 | 2084 | commit = crtc_or_fake_commit(state, new_plane_state->crtc ?: old_plane_state->crtc); |
21a01abb ML |
2085 | if (!commit) |
2086 | return -ENOMEM; | |
2087 | ||
2088 | new_plane_state->commit = drm_crtc_commit_get(commit); | |
a095caa7 DV |
2089 | } |
2090 | ||
a095caa7 | 2091 | return 0; |
a095caa7 | 2092 | } |
a095caa7 | 2093 | EXPORT_SYMBOL(drm_atomic_helper_setup_commit); |
a095caa7 DV |
2094 | |
2095 | /** | |
2096 | * drm_atomic_helper_wait_for_dependencies - wait for required preceeding commits | |
1ea0c02e | 2097 | * @old_state: atomic state object with old state structures |
a095caa7 DV |
2098 | * |
2099 | * This function waits for all preceeding commits that touch the same CRTC as | |
1ea0c02e | 2100 | * @old_state to both be committed to the hardware (as signalled by |
a095caa7 | 2101 | * drm_atomic_helper_commit_hw_done) and executed by the hardware (as signalled |
277b09cf | 2102 | * by calling drm_crtc_send_vblank_event() on the &drm_crtc_state.event). |
a095caa7 DV |
2103 | * |
2104 | * This is part of the atomic helper support for nonblocking commits, see | |
2105 | * drm_atomic_helper_setup_commit() for an overview. | |
2106 | */ | |
1ea0c02e | 2107 | void drm_atomic_helper_wait_for_dependencies(struct drm_atomic_state *old_state) |
a095caa7 DV |
2108 | { |
2109 | struct drm_crtc *crtc; | |
163bcc2c | 2110 | struct drm_crtc_state *old_crtc_state; |
21a01abb ML |
2111 | struct drm_plane *plane; |
2112 | struct drm_plane_state *old_plane_state; | |
2113 | struct drm_connector *conn; | |
2114 | struct drm_connector_state *old_conn_state; | |
a095caa7 DV |
2115 | struct drm_crtc_commit *commit; |
2116 | int i; | |
2117 | long ret; | |
2118 | ||
163bcc2c ML |
2119 | for_each_old_crtc_in_state(old_state, crtc, old_crtc_state, i) { |
2120 | commit = old_crtc_state->commit; | |
a095caa7 DV |
2121 | |
2122 | if (!commit) | |
2123 | continue; | |
2124 | ||
2125 | ret = wait_for_completion_timeout(&commit->hw_done, | |
2126 | 10*HZ); | |
2127 | if (ret == 0) | |
2128 | DRM_ERROR("[CRTC:%d:%s] hw_done timed out\n", | |
2129 | crtc->base.id, crtc->name); | |
2130 | ||
2131 | /* Currently no support for overwriting flips, hence | |
2132 | * stall for previous one to execute completely. */ | |
2133 | ret = wait_for_completion_timeout(&commit->flip_done, | |
2134 | 10*HZ); | |
2135 | if (ret == 0) | |
2136 | DRM_ERROR("[CRTC:%d:%s] flip_done timed out\n", | |
2137 | crtc->base.id, crtc->name); | |
a095caa7 | 2138 | } |
21a01abb ML |
2139 | |
2140 | for_each_old_connector_in_state(old_state, conn, old_conn_state, i) { | |
2141 | commit = old_conn_state->commit; | |
a095caa7 | 2142 | |
21a01abb ML |
2143 | if (!commit) |
2144 | continue; | |
2145 | ||
2146 | ret = wait_for_completion_timeout(&commit->hw_done, | |
2147 | 10*HZ); | |
2148 | if (ret == 0) | |
2149 | DRM_ERROR("[CONNECTOR:%d:%s] hw_done timed out\n", | |
2150 | conn->base.id, conn->name); | |
2151 | ||
2152 | /* Currently no support for overwriting flips, hence | |
2153 | * stall for previous one to execute completely. */ | |
2154 | ret = wait_for_completion_timeout(&commit->flip_done, | |
2155 | 10*HZ); | |
2156 | if (ret == 0) | |
2157 | DRM_ERROR("[CONNECTOR:%d:%s] flip_done timed out\n", | |
2158 | conn->base.id, conn->name); | |
2159 | } | |
2160 | ||
2161 | for_each_old_plane_in_state(old_state, plane, old_plane_state, i) { | |
2162 | commit = old_plane_state->commit; | |
2163 | ||
2164 | if (!commit) | |
2165 | continue; | |
2166 | ||
2167 | ret = wait_for_completion_timeout(&commit->hw_done, | |
2168 | 10*HZ); | |
2169 | if (ret == 0) | |
2170 | DRM_ERROR("[PLANE:%d:%s] hw_done timed out\n", | |
2171 | plane->base.id, plane->name); | |
2172 | ||
2173 | /* Currently no support for overwriting flips, hence | |
2174 | * stall for previous one to execute completely. */ | |
2175 | ret = wait_for_completion_timeout(&commit->flip_done, | |
2176 | 10*HZ); | |
2177 | if (ret == 0) | |
2178 | DRM_ERROR("[PLANE:%d:%s] flip_done timed out\n", | |
2179 | plane->base.id, plane->name); | |
a095caa7 DV |
2180 | } |
2181 | } | |
2182 | EXPORT_SYMBOL(drm_atomic_helper_wait_for_dependencies); | |
2183 | ||
b25c60af BB |
2184 | /** |
2185 | * drm_atomic_helper_fake_vblank - fake VBLANK events if needed | |
2186 | * @old_state: atomic state object with old state structures | |
2187 | * | |
2188 | * This function walks all CRTCs and fake VBLANK events on those with | |
2189 | * &drm_crtc_state.no_vblank set to true and &drm_crtc_state.event != NULL. | |
2190 | * The primary use of this function is writeback connectors working in oneshot | |
2191 | * mode and faking VBLANK events. In this case they only fake the VBLANK event | |
2192 | * when a job is queued, and any change to the pipeline that does not touch the | |
2193 | * connector is leading to timeouts when calling | |
2194 | * drm_atomic_helper_wait_for_vblanks() or | |
2195 | * drm_atomic_helper_wait_for_flip_done(). | |
2196 | * | |
2197 | * This is part of the atomic helper support for nonblocking commits, see | |
2198 | * drm_atomic_helper_setup_commit() for an overview. | |
2199 | */ | |
2200 | void drm_atomic_helper_fake_vblank(struct drm_atomic_state *old_state) | |
2201 | { | |
2202 | struct drm_crtc_state *new_crtc_state; | |
2203 | struct drm_crtc *crtc; | |
2204 | int i; | |
2205 | ||
2206 | for_each_new_crtc_in_state(old_state, crtc, new_crtc_state, i) { | |
2207 | unsigned long flags; | |
2208 | ||
2209 | if (!new_crtc_state->no_vblank) | |
2210 | continue; | |
2211 | ||
2212 | spin_lock_irqsave(&old_state->dev->event_lock, flags); | |
2213 | if (new_crtc_state->event) { | |
2214 | drm_crtc_send_vblank_event(crtc, | |
2215 | new_crtc_state->event); | |
2216 | new_crtc_state->event = NULL; | |
2217 | } | |
2218 | spin_unlock_irqrestore(&old_state->dev->event_lock, flags); | |
2219 | } | |
2220 | } | |
2221 | EXPORT_SYMBOL(drm_atomic_helper_fake_vblank); | |
2222 | ||
a095caa7 DV |
2223 | /** |
2224 | * drm_atomic_helper_commit_hw_done - setup possible nonblocking commit | |
1ea0c02e | 2225 | * @old_state: atomic state object with old state structures |
a095caa7 DV |
2226 | * |
2227 | * This function is used to signal completion of the hardware commit step. After | |
2228 | * this step the driver is not allowed to read or change any permanent software | |
2229 | * or hardware modeset state. The only exception is state protected by other | |
2230 | * means than &drm_modeset_lock locks. | |
2231 | * | |
2232 | * Drivers should try to postpone any expensive or delayed cleanup work after | |
2233 | * this function is called. | |
2234 | * | |
2235 | * This is part of the atomic helper support for nonblocking commits, see | |
2236 | * drm_atomic_helper_setup_commit() for an overview. | |
2237 | */ | |
1ea0c02e | 2238 | void drm_atomic_helper_commit_hw_done(struct drm_atomic_state *old_state) |
a095caa7 DV |
2239 | { |
2240 | struct drm_crtc *crtc; | |
163bcc2c | 2241 | struct drm_crtc_state *old_crtc_state, *new_crtc_state; |
a095caa7 DV |
2242 | struct drm_crtc_commit *commit; |
2243 | int i; | |
2244 | ||
163bcc2c ML |
2245 | for_each_oldnew_crtc_in_state(old_state, crtc, old_crtc_state, new_crtc_state, i) { |
2246 | commit = new_crtc_state->commit; | |
a095caa7 DV |
2247 | if (!commit) |
2248 | continue; | |
2249 | ||
163bcc2c ML |
2250 | /* |
2251 | * copy new_crtc_state->commit to old_crtc_state->commit, | |
2252 | * it's unsafe to touch new_crtc_state after hw_done, | |
2253 | * but we still need to do so in cleanup_done(). | |
2254 | */ | |
2255 | if (old_crtc_state->commit) | |
2256 | drm_crtc_commit_put(old_crtc_state->commit); | |
2257 | ||
2258 | old_crtc_state->commit = drm_crtc_commit_get(commit); | |
2259 | ||
a095caa7 | 2260 | /* backend must have consumed any event by now */ |
415c3ac3 | 2261 | WARN_ON(new_crtc_state->event); |
a095caa7 | 2262 | complete_all(&commit->hw_done); |
a095caa7 | 2263 | } |
21a01abb ML |
2264 | |
2265 | if (old_state->fake_commit) { | |
2266 | complete_all(&old_state->fake_commit->hw_done); | |
2267 | complete_all(&old_state->fake_commit->flip_done); | |
2268 | } | |
a095caa7 DV |
2269 | } |
2270 | EXPORT_SYMBOL(drm_atomic_helper_commit_hw_done); | |
2271 | ||
2272 | /** | |
2273 | * drm_atomic_helper_commit_cleanup_done - signal completion of commit | |
1ea0c02e | 2274 | * @old_state: atomic state object with old state structures |
a095caa7 | 2275 | * |
1ea0c02e DV |
2276 | * This signals completion of the atomic update @old_state, including any |
2277 | * cleanup work. If used, it must be called right before calling | |
0853695c | 2278 | * drm_atomic_state_put(). |
a095caa7 DV |
2279 | * |
2280 | * This is part of the atomic helper support for nonblocking commits, see | |
2281 | * drm_atomic_helper_setup_commit() for an overview. | |
2282 | */ | |
1ea0c02e | 2283 | void drm_atomic_helper_commit_cleanup_done(struct drm_atomic_state *old_state) |
a095caa7 DV |
2284 | { |
2285 | struct drm_crtc *crtc; | |
163bcc2c | 2286 | struct drm_crtc_state *old_crtc_state; |
a095caa7 DV |
2287 | struct drm_crtc_commit *commit; |
2288 | int i; | |
a095caa7 | 2289 | |
163bcc2c ML |
2290 | for_each_old_crtc_in_state(old_state, crtc, old_crtc_state, i) { |
2291 | commit = old_crtc_state->commit; | |
a095caa7 DV |
2292 | if (WARN_ON(!commit)) |
2293 | continue; | |
2294 | ||
a095caa7 DV |
2295 | complete_all(&commit->cleanup_done); |
2296 | WARN_ON(!try_wait_for_completion(&commit->hw_done)); | |
2297 | ||
7141fd3e | 2298 | spin_lock(&crtc->commit_lock); |
a095caa7 DV |
2299 | list_del(&commit->commit_entry); |
2300 | spin_unlock(&crtc->commit_lock); | |
2301 | } | |
21a01abb | 2302 | |
10a599fa | 2303 | if (old_state->fake_commit) { |
21a01abb | 2304 | complete_all(&old_state->fake_commit->cleanup_done); |
10a599fa VS |
2305 | WARN_ON(!try_wait_for_completion(&old_state->fake_commit->hw_done)); |
2306 | } | |
a095caa7 DV |
2307 | } |
2308 | EXPORT_SYMBOL(drm_atomic_helper_commit_cleanup_done); | |
2309 | ||
c2fcd274 | 2310 | /** |
2e3afd47 | 2311 | * drm_atomic_helper_prepare_planes - prepare plane resources before commit |
c2fcd274 | 2312 | * @dev: DRM device |
2e3afd47 | 2313 | * @state: atomic state object with new state structures |
c2fcd274 DV |
2314 | * |
2315 | * This function prepares plane state, specifically framebuffers, for the new | |
6806cdf9 DV |
2316 | * configuration, by calling &drm_plane_helper_funcs.prepare_fb. If any failure |
2317 | * is encountered this function will call &drm_plane_helper_funcs.cleanup_fb on | |
2318 | * any already successfully prepared framebuffer. | |
c2fcd274 DV |
2319 | * |
2320 | * Returns: | |
2321 | * 0 on success, negative error code on failure. | |
2322 | */ | |
2323 | int drm_atomic_helper_prepare_planes(struct drm_device *dev, | |
2324 | struct drm_atomic_state *state) | |
2325 | { | |
9d2230dc LP |
2326 | struct drm_connector *connector; |
2327 | struct drm_connector_state *new_conn_state; | |
be9174a4 | 2328 | struct drm_plane *plane; |
415c3ac3 | 2329 | struct drm_plane_state *new_plane_state; |
be9174a4 | 2330 | int ret, i, j; |
c2fcd274 | 2331 | |
9d2230dc LP |
2332 | for_each_new_connector_in_state(state, connector, new_conn_state, i) { |
2333 | if (!new_conn_state->writeback_job) | |
2334 | continue; | |
2335 | ||
2336 | ret = drm_writeback_prepare_job(new_conn_state->writeback_job); | |
2337 | if (ret < 0) | |
2338 | return ret; | |
2339 | } | |
2340 | ||
415c3ac3 | 2341 | for_each_new_plane_in_state(state, plane, new_plane_state, i) { |
b5ceff20 | 2342 | const struct drm_plane_helper_funcs *funcs; |
c2fcd274 DV |
2343 | |
2344 | funcs = plane->helper_private; | |
2345 | ||
844f9111 | 2346 | if (funcs->prepare_fb) { |
415c3ac3 | 2347 | ret = funcs->prepare_fb(plane, new_plane_state); |
c2fcd274 DV |
2348 | if (ret) |
2349 | goto fail; | |
2350 | } | |
2351 | } | |
2352 | ||
2353 | return 0; | |
2354 | ||
2355 | fail: | |
415c3ac3 | 2356 | for_each_new_plane_in_state(state, plane, new_plane_state, j) { |
b5ceff20 | 2357 | const struct drm_plane_helper_funcs *funcs; |
c2fcd274 | 2358 | |
be9174a4 | 2359 | if (j >= i) |
c2fcd274 DV |
2360 | continue; |
2361 | ||
2362 | funcs = plane->helper_private; | |
2363 | ||
844f9111 | 2364 | if (funcs->cleanup_fb) |
415c3ac3 | 2365 | funcs->cleanup_fb(plane, new_plane_state); |
c2fcd274 DV |
2366 | } |
2367 | ||
2368 | return ret; | |
2369 | } | |
2370 | EXPORT_SYMBOL(drm_atomic_helper_prepare_planes); | |
2371 | ||
7135ac54 | 2372 | static bool plane_crtc_active(const struct drm_plane_state *state) |
aef9dbb8 DV |
2373 | { |
2374 | return state->crtc && state->crtc->state->active; | |
2375 | } | |
2376 | ||
c2fcd274 DV |
2377 | /** |
2378 | * drm_atomic_helper_commit_planes - commit plane state | |
2379 | * @dev: DRM device | |
b0fcfc89 | 2380 | * @old_state: atomic state object with old state structures |
2b58e98d | 2381 | * @flags: flags for committing plane state |
c2fcd274 DV |
2382 | * |
2383 | * This function commits the new plane state using the plane and atomic helper | |
2384 | * functions for planes and crtcs. It assumes that the atomic state has already | |
2385 | * been pushed into the relevant object state pointers, since this step can no | |
2386 | * longer fail. | |
2387 | * | |
b0fcfc89 | 2388 | * It still requires the global state object @old_state to know which planes and |
c2fcd274 | 2389 | * crtcs need to be updated though. |
de28d021 ML |
2390 | * |
2391 | * Note that this function does all plane updates across all CRTCs in one step. | |
2392 | * If the hardware can't support this approach look at | |
2393 | * drm_atomic_helper_commit_planes_on_crtc() instead. | |
6e48ae32 DV |
2394 | * |
2395 | * Plane parameters can be updated by applications while the associated CRTC is | |
2396 | * disabled. The DRM/KMS core will store the parameters in the plane state, | |
2397 | * which will be available to the driver when the CRTC is turned on. As a result | |
2398 | * most drivers don't need to be immediately notified of plane updates for a | |
2399 | * disabled CRTC. | |
2400 | * | |
2b58e98d LY |
2401 | * Unless otherwise needed, drivers are advised to set the ACTIVE_ONLY flag in |
2402 | * @flags in order not to receive plane update notifications related to a | |
2403 | * disabled CRTC. This avoids the need to manually ignore plane updates in | |
6e48ae32 DV |
2404 | * driver code when the driver and/or hardware can't or just don't need to deal |
2405 | * with updates on disabled CRTCs, for example when supporting runtime PM. | |
2406 | * | |
2b58e98d LY |
2407 | * Drivers may set the NO_DISABLE_AFTER_MODESET flag in @flags if the relevant |
2408 | * display controllers require to disable a CRTC's planes when the CRTC is | |
6806cdf9 DV |
2409 | * disabled. This function would skip the &drm_plane_helper_funcs.atomic_disable |
2410 | * call for a plane if the CRTC of the old plane state needs a modesetting | |
2411 | * operation. Of course, the drivers need to disable the planes in their CRTC | |
2412 | * disable callbacks since no one else would do that. | |
2b58e98d LY |
2413 | * |
2414 | * The drm_atomic_helper_commit() default implementation doesn't set the | |
2415 | * ACTIVE_ONLY flag to most closely match the behaviour of the legacy helpers. | |
2416 | * This should not be copied blindly by drivers. | |
c2fcd274 DV |
2417 | */ |
2418 | void drm_atomic_helper_commit_planes(struct drm_device *dev, | |
aef9dbb8 | 2419 | struct drm_atomic_state *old_state, |
2b58e98d | 2420 | uint32_t flags) |
c2fcd274 | 2421 | { |
df63b999 | 2422 | struct drm_crtc *crtc; |
415c3ac3 | 2423 | struct drm_crtc_state *old_crtc_state, *new_crtc_state; |
df63b999 | 2424 | struct drm_plane *plane; |
415c3ac3 | 2425 | struct drm_plane_state *old_plane_state, *new_plane_state; |
c2fcd274 | 2426 | int i; |
2b58e98d LY |
2427 | bool active_only = flags & DRM_PLANE_COMMIT_ACTIVE_ONLY; |
2428 | bool no_disable = flags & DRM_PLANE_COMMIT_NO_DISABLE_AFTER_MODESET; | |
c2fcd274 | 2429 | |
415c3ac3 | 2430 | for_each_oldnew_crtc_in_state(old_state, crtc, old_crtc_state, new_crtc_state, i) { |
b5ceff20 | 2431 | const struct drm_crtc_helper_funcs *funcs; |
c2fcd274 DV |
2432 | |
2433 | funcs = crtc->helper_private; | |
2434 | ||
2435 | if (!funcs || !funcs->atomic_begin) | |
2436 | continue; | |
2437 | ||
415c3ac3 | 2438 | if (active_only && !new_crtc_state->active) |
aef9dbb8 DV |
2439 | continue; |
2440 | ||
613d2b27 | 2441 | funcs->atomic_begin(crtc, old_crtc_state); |
c2fcd274 DV |
2442 | } |
2443 | ||
415c3ac3 | 2444 | for_each_oldnew_plane_in_state(old_state, plane, old_plane_state, new_plane_state, i) { |
b5ceff20 | 2445 | const struct drm_plane_helper_funcs *funcs; |
216c59d6 | 2446 | bool disabling; |
c2fcd274 DV |
2447 | |
2448 | funcs = plane->helper_private; | |
2449 | ||
3cad4b68 | 2450 | if (!funcs) |
c2fcd274 DV |
2451 | continue; |
2452 | ||
51ffa12d ML |
2453 | disabling = drm_atomic_plane_disabling(old_plane_state, |
2454 | new_plane_state); | |
216c59d6 LP |
2455 | |
2456 | if (active_only) { | |
2457 | /* | |
2458 | * Skip planes related to inactive CRTCs. If the plane | |
2459 | * is enabled use the state of the current CRTC. If the | |
2460 | * plane is being disabled use the state of the old | |
2461 | * CRTC to avoid skipping planes being disabled on an | |
2462 | * active CRTC. | |
2463 | */ | |
415c3ac3 | 2464 | if (!disabling && !plane_crtc_active(new_plane_state)) |
216c59d6 LP |
2465 | continue; |
2466 | if (disabling && !plane_crtc_active(old_plane_state)) | |
2467 | continue; | |
2468 | } | |
aef9dbb8 | 2469 | |
407b8bd9 TR |
2470 | /* |
2471 | * Special-case disabling the plane if drivers support it. | |
2472 | */ | |
2b58e98d LY |
2473 | if (disabling && funcs->atomic_disable) { |
2474 | struct drm_crtc_state *crtc_state; | |
2475 | ||
2476 | crtc_state = old_plane_state->crtc->state; | |
2477 | ||
2478 | if (drm_atomic_crtc_needs_modeset(crtc_state) && | |
2479 | no_disable) | |
2480 | continue; | |
2481 | ||
407b8bd9 | 2482 | funcs->atomic_disable(plane, old_plane_state); |
415c3ac3 | 2483 | } else if (new_plane_state->crtc || disabling) { |
407b8bd9 | 2484 | funcs->atomic_update(plane, old_plane_state); |
2b58e98d | 2485 | } |
c2fcd274 DV |
2486 | } |
2487 | ||
415c3ac3 | 2488 | for_each_oldnew_crtc_in_state(old_state, crtc, old_crtc_state, new_crtc_state, i) { |
b5ceff20 | 2489 | const struct drm_crtc_helper_funcs *funcs; |
c2fcd274 DV |
2490 | |
2491 | funcs = crtc->helper_private; | |
2492 | ||
2493 | if (!funcs || !funcs->atomic_flush) | |
2494 | continue; | |
2495 | ||
415c3ac3 | 2496 | if (active_only && !new_crtc_state->active) |
aef9dbb8 DV |
2497 | continue; |
2498 | ||
613d2b27 | 2499 | funcs->atomic_flush(crtc, old_crtc_state); |
c2fcd274 DV |
2500 | } |
2501 | } | |
2502 | EXPORT_SYMBOL(drm_atomic_helper_commit_planes); | |
2503 | ||
de28d021 ML |
2504 | /** |
2505 | * drm_atomic_helper_commit_planes_on_crtc - commit plane state for a crtc | |
2506 | * @old_crtc_state: atomic state object with the old crtc state | |
2507 | * | |
2508 | * This function commits the new plane state using the plane and atomic helper | |
2509 | * functions for planes on the specific crtc. It assumes that the atomic state | |
2510 | * has already been pushed into the relevant object state pointers, since this | |
2511 | * step can no longer fail. | |
2512 | * | |
2513 | * This function is useful when plane updates should be done crtc-by-crtc | |
2514 | * instead of one global step like drm_atomic_helper_commit_planes() does. | |
2515 | * | |
2516 | * This function can only be savely used when planes are not allowed to move | |
2517 | * between different CRTCs because this function doesn't handle inter-CRTC | |
2518 | * depencies. Callers need to ensure that either no such depencies exist, | |
2519 | * resolve them through ordering of commit calls or through some other means. | |
2520 | */ | |
2521 | void | |
2522 | drm_atomic_helper_commit_planes_on_crtc(struct drm_crtc_state *old_crtc_state) | |
2523 | { | |
2524 | const struct drm_crtc_helper_funcs *crtc_funcs; | |
2525 | struct drm_crtc *crtc = old_crtc_state->crtc; | |
2526 | struct drm_atomic_state *old_state = old_crtc_state->state; | |
e35a2f9a VS |
2527 | struct drm_crtc_state *new_crtc_state = |
2528 | drm_atomic_get_new_crtc_state(old_state, crtc); | |
de28d021 ML |
2529 | struct drm_plane *plane; |
2530 | unsigned plane_mask; | |
2531 | ||
2532 | plane_mask = old_crtc_state->plane_mask; | |
e35a2f9a | 2533 | plane_mask |= new_crtc_state->plane_mask; |
de28d021 ML |
2534 | |
2535 | crtc_funcs = crtc->helper_private; | |
2536 | if (crtc_funcs && crtc_funcs->atomic_begin) | |
613d2b27 | 2537 | crtc_funcs->atomic_begin(crtc, old_crtc_state); |
de28d021 ML |
2538 | |
2539 | drm_for_each_plane_mask(plane, crtc->dev, plane_mask) { | |
2540 | struct drm_plane_state *old_plane_state = | |
b4d93679 | 2541 | drm_atomic_get_old_plane_state(old_state, plane); |
e35a2f9a VS |
2542 | struct drm_plane_state *new_plane_state = |
2543 | drm_atomic_get_new_plane_state(old_state, plane); | |
de28d021 ML |
2544 | const struct drm_plane_helper_funcs *plane_funcs; |
2545 | ||
2546 | plane_funcs = plane->helper_private; | |
2547 | ||
2548 | if (!old_plane_state || !plane_funcs) | |
2549 | continue; | |
2550 | ||
e35a2f9a VS |
2551 | WARN_ON(new_plane_state->crtc && |
2552 | new_plane_state->crtc != crtc); | |
de28d021 | 2553 | |
e35a2f9a | 2554 | if (drm_atomic_plane_disabling(old_plane_state, new_plane_state) && |
de28d021 ML |
2555 | plane_funcs->atomic_disable) |
2556 | plane_funcs->atomic_disable(plane, old_plane_state); | |
e35a2f9a VS |
2557 | else if (new_plane_state->crtc || |
2558 | drm_atomic_plane_disabling(old_plane_state, new_plane_state)) | |
de28d021 ML |
2559 | plane_funcs->atomic_update(plane, old_plane_state); |
2560 | } | |
2561 | ||
2562 | if (crtc_funcs && crtc_funcs->atomic_flush) | |
613d2b27 | 2563 | crtc_funcs->atomic_flush(crtc, old_crtc_state); |
de28d021 ML |
2564 | } |
2565 | EXPORT_SYMBOL(drm_atomic_helper_commit_planes_on_crtc); | |
2566 | ||
6753ba97 JS |
2567 | /** |
2568 | * drm_atomic_helper_disable_planes_on_crtc - helper to disable CRTC's planes | |
28500291 | 2569 | * @old_crtc_state: atomic state object with the old CRTC state |
6753ba97 JS |
2570 | * @atomic: if set, synchronize with CRTC's atomic_begin/flush hooks |
2571 | * | |
2572 | * Disables all planes associated with the given CRTC. This can be | |
28500291 LY |
2573 | * used for instance in the CRTC helper atomic_disable callback to disable |
2574 | * all planes. | |
6753ba97 JS |
2575 | * |
2576 | * If the atomic-parameter is set the function calls the CRTC's | |
2577 | * atomic_begin hook before and atomic_flush hook after disabling the | |
2578 | * planes. | |
2579 | * | |
2580 | * It is a bug to call this function without having implemented the | |
6806cdf9 | 2581 | * &drm_plane_helper_funcs.atomic_disable plane hook. |
6753ba97 | 2582 | */ |
28500291 LY |
2583 | void |
2584 | drm_atomic_helper_disable_planes_on_crtc(struct drm_crtc_state *old_crtc_state, | |
2585 | bool atomic) | |
6753ba97 | 2586 | { |
28500291 | 2587 | struct drm_crtc *crtc = old_crtc_state->crtc; |
6753ba97 JS |
2588 | const struct drm_crtc_helper_funcs *crtc_funcs = |
2589 | crtc->helper_private; | |
2590 | struct drm_plane *plane; | |
2591 | ||
2592 | if (atomic && crtc_funcs && crtc_funcs->atomic_begin) | |
2593 | crtc_funcs->atomic_begin(crtc, NULL); | |
2594 | ||
28500291 | 2595 | drm_atomic_crtc_state_for_each_plane(plane, old_crtc_state) { |
6753ba97 JS |
2596 | const struct drm_plane_helper_funcs *plane_funcs = |
2597 | plane->helper_private; | |
2598 | ||
28500291 | 2599 | if (!plane_funcs) |
6753ba97 JS |
2600 | continue; |
2601 | ||
2602 | WARN_ON(!plane_funcs->atomic_disable); | |
2603 | if (plane_funcs->atomic_disable) | |
2604 | plane_funcs->atomic_disable(plane, NULL); | |
2605 | } | |
2606 | ||
2607 | if (atomic && crtc_funcs && crtc_funcs->atomic_flush) | |
2608 | crtc_funcs->atomic_flush(crtc, NULL); | |
2609 | } | |
2610 | EXPORT_SYMBOL(drm_atomic_helper_disable_planes_on_crtc); | |
2611 | ||
c2fcd274 DV |
2612 | /** |
2613 | * drm_atomic_helper_cleanup_planes - cleanup plane resources after commit | |
2614 | * @dev: DRM device | |
2615 | * @old_state: atomic state object with old state structures | |
2616 | * | |
2617 | * This function cleans up plane state, specifically framebuffers, from the old | |
2618 | * configuration. Hence the old configuration must be perserved in @old_state to | |
2619 | * be able to call this function. | |
2620 | * | |
2621 | * This function must also be called on the new state when the atomic update | |
2622 | * fails at any point after calling drm_atomic_helper_prepare_planes(). | |
2623 | */ | |
2624 | void drm_atomic_helper_cleanup_planes(struct drm_device *dev, | |
2625 | struct drm_atomic_state *old_state) | |
2626 | { | |
df63b999 | 2627 | struct drm_plane *plane; |
415c3ac3 | 2628 | struct drm_plane_state *old_plane_state, *new_plane_state; |
c2fcd274 DV |
2629 | int i; |
2630 | ||
415c3ac3 | 2631 | for_each_oldnew_plane_in_state(old_state, plane, old_plane_state, new_plane_state, i) { |
b5ceff20 | 2632 | const struct drm_plane_helper_funcs *funcs; |
415c3ac3 ML |
2633 | struct drm_plane_state *plane_state; |
2634 | ||
2635 | /* | |
2636 | * This might be called before swapping when commit is aborted, | |
2637 | * in which case we have to cleanup the new state. | |
2638 | */ | |
2639 | if (old_plane_state == plane->state) | |
2640 | plane_state = new_plane_state; | |
2641 | else | |
2642 | plane_state = old_plane_state; | |
c2fcd274 | 2643 | |
c2fcd274 DV |
2644 | funcs = plane->helper_private; |
2645 | ||
844f9111 ML |
2646 | if (funcs->cleanup_fb) |
2647 | funcs->cleanup_fb(plane, plane_state); | |
c2fcd274 DV |
2648 | } |
2649 | } | |
2650 | EXPORT_SYMBOL(drm_atomic_helper_cleanup_planes); | |
2651 | ||
2652 | /** | |
2653 | * drm_atomic_helper_swap_state - store atomic state into current sw state | |
c2fcd274 | 2654 | * @state: atomic state |
c066d231 | 2655 | * @stall: stall for preceeding commits |
c2fcd274 DV |
2656 | * |
2657 | * This function stores the atomic state into the current state pointers in all | |
2658 | * driver objects. It should be called after all failing steps have been done | |
2659 | * and succeeded, but before the actual hardware state is committed. | |
2660 | * | |
2661 | * For cleanup and error recovery the current state for all changed objects will | |
c066d231 | 2662 | * be swapped into @state. |
c2fcd274 DV |
2663 | * |
2664 | * With that sequence it fits perfectly into the plane prepare/cleanup sequence: | |
2665 | * | |
2666 | * 1. Call drm_atomic_helper_prepare_planes() with the staged atomic state. | |
2667 | * | |
2668 | * 2. Do any other steps that might fail. | |
2669 | * | |
2670 | * 3. Put the staged state into the current state pointers with this function. | |
2671 | * | |
2672 | * 4. Actually commit the hardware state. | |
2673 | * | |
26196f7e | 2674 | * 5. Call drm_atomic_helper_cleanup_planes() with @state, which since step 3 |
c2fcd274 | 2675 | * contains the old state. Also do any other cleanup required with that state. |
a095caa7 DV |
2676 | * |
2677 | * @stall must be set when nonblocking commits for this driver directly access | |
6806cdf9 DV |
2678 | * the &drm_plane.state, &drm_crtc.state or &drm_connector.state pointer. With |
2679 | * the current atomic helpers this is almost always the case, since the helpers | |
a095caa7 | 2680 | * don't pass the right state structures to the callbacks. |
c066d231 ML |
2681 | * |
2682 | * Returns: | |
2683 | * | |
c4bbb735 ML |
2684 | * Returns 0 on success. Can return -ERESTARTSYS when @stall is true and the |
2685 | * waiting for the previous commits has been interrupted. | |
c2fcd274 | 2686 | */ |
c066d231 | 2687 | int drm_atomic_helper_swap_state(struct drm_atomic_state *state, |
5e84c269 | 2688 | bool stall) |
c2fcd274 | 2689 | { |
c4bbb735 | 2690 | int i, ret; |
be9174a4 | 2691 | struct drm_connector *connector; |
415c3ac3 | 2692 | struct drm_connector_state *old_conn_state, *new_conn_state; |
be9174a4 | 2693 | struct drm_crtc *crtc; |
415c3ac3 | 2694 | struct drm_crtc_state *old_crtc_state, *new_crtc_state; |
be9174a4 | 2695 | struct drm_plane *plane; |
415c3ac3 | 2696 | struct drm_plane_state *old_plane_state, *new_plane_state; |
a095caa7 | 2697 | struct drm_crtc_commit *commit; |
a4370c77 VS |
2698 | struct drm_private_obj *obj; |
2699 | struct drm_private_state *old_obj_state, *new_obj_state; | |
a095caa7 DV |
2700 | |
2701 | if (stall) { | |
21a01abb ML |
2702 | /* |
2703 | * We have to stall for hw_done here before | |
2704 | * drm_atomic_helper_wait_for_dependencies() because flip | |
2705 | * depth > 1 is not yet supported by all drivers. As long as | |
2706 | * obj->state is directly dereferenced anywhere in the drivers | |
2707 | * atomic_commit_tail function, then it's unsafe to swap state | |
2708 | * before drm_atomic_helper_commit_hw_done() is called. | |
2709 | */ | |
2710 | ||
163bcc2c ML |
2711 | for_each_old_crtc_in_state(state, crtc, old_crtc_state, i) { |
2712 | commit = old_crtc_state->commit; | |
a095caa7 DV |
2713 | |
2714 | if (!commit) | |
2715 | continue; | |
2716 | ||
c4bbb735 | 2717 | ret = wait_for_completion_interruptible(&commit->hw_done); |
c4bbb735 ML |
2718 | if (ret) |
2719 | return ret; | |
a095caa7 | 2720 | } |
21a01abb ML |
2721 | |
2722 | for_each_old_connector_in_state(state, connector, old_conn_state, i) { | |
2723 | commit = old_conn_state->commit; | |
a095caa7 DV |
2724 | |
2725 | if (!commit) | |
2726 | continue; | |
2727 | ||
c4bbb735 | 2728 | ret = wait_for_completion_interruptible(&commit->hw_done); |
21a01abb ML |
2729 | if (ret) |
2730 | return ret; | |
2731 | } | |
c4bbb735 | 2732 | |
21a01abb ML |
2733 | for_each_old_plane_in_state(state, plane, old_plane_state, i) { |
2734 | commit = old_plane_state->commit; | |
2735 | ||
2736 | if (!commit) | |
2737 | continue; | |
2738 | ||
2739 | ret = wait_for_completion_interruptible(&commit->hw_done); | |
c4bbb735 ML |
2740 | if (ret) |
2741 | return ret; | |
a095caa7 DV |
2742 | } |
2743 | } | |
c2fcd274 | 2744 | |
415c3ac3 | 2745 | for_each_oldnew_connector_in_state(state, connector, old_conn_state, new_conn_state, i) { |
581e49fe ML |
2746 | WARN_ON(connector->state != old_conn_state); |
2747 | ||
415c3ac3 ML |
2748 | old_conn_state->state = state; |
2749 | new_conn_state->state = NULL; | |
2750 | ||
2751 | state->connectors[i].state = old_conn_state; | |
2752 | connector->state = new_conn_state; | |
c2fcd274 DV |
2753 | } |
2754 | ||
415c3ac3 | 2755 | for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) { |
581e49fe ML |
2756 | WARN_ON(crtc->state != old_crtc_state); |
2757 | ||
415c3ac3 ML |
2758 | old_crtc_state->state = state; |
2759 | new_crtc_state->state = NULL; | |
2760 | ||
2761 | state->crtcs[i].state = old_crtc_state; | |
2762 | crtc->state = new_crtc_state; | |
a095caa7 | 2763 | |
163bcc2c | 2764 | if (new_crtc_state->commit) { |
a095caa7 | 2765 | spin_lock(&crtc->commit_lock); |
163bcc2c | 2766 | list_add(&new_crtc_state->commit->commit_entry, |
a095caa7 DV |
2767 | &crtc->commit_list); |
2768 | spin_unlock(&crtc->commit_lock); | |
2769 | ||
163bcc2c | 2770 | new_crtc_state->commit->event = NULL; |
a095caa7 | 2771 | } |
c2fcd274 DV |
2772 | } |
2773 | ||
415c3ac3 | 2774 | for_each_oldnew_plane_in_state(state, plane, old_plane_state, new_plane_state, i) { |
581e49fe ML |
2775 | WARN_ON(plane->state != old_plane_state); |
2776 | ||
415c3ac3 ML |
2777 | old_plane_state->state = state; |
2778 | new_plane_state->state = NULL; | |
2779 | ||
2780 | state->planes[i].state = old_plane_state; | |
2781 | plane->state = new_plane_state; | |
c2fcd274 | 2782 | } |
b430c27a | 2783 | |
a4370c77 VS |
2784 | for_each_oldnew_private_obj_in_state(state, obj, old_obj_state, new_obj_state, i) { |
2785 | WARN_ON(obj->state != old_obj_state); | |
2786 | ||
2787 | old_obj_state->state = state; | |
2788 | new_obj_state->state = NULL; | |
2789 | ||
2790 | state->private_objs[i].state = old_obj_state; | |
2791 | obj->state = new_obj_state; | |
2792 | } | |
c066d231 ML |
2793 | |
2794 | return 0; | |
c2fcd274 DV |
2795 | } |
2796 | EXPORT_SYMBOL(drm_atomic_helper_swap_state); | |
042652ed DV |
2797 | |
2798 | /** | |
2799 | * drm_atomic_helper_update_plane - Helper for primary plane update using atomic | |
2800 | * @plane: plane object to update | |
2801 | * @crtc: owning CRTC of owning plane | |
2802 | * @fb: framebuffer to flip onto plane | |
2803 | * @crtc_x: x offset of primary plane on crtc | |
2804 | * @crtc_y: y offset of primary plane on crtc | |
2805 | * @crtc_w: width of primary plane rectangle on crtc | |
2806 | * @crtc_h: height of primary plane rectangle on crtc | |
2807 | * @src_x: x offset of @fb for panning | |
2808 | * @src_y: y offset of @fb for panning | |
2809 | * @src_w: width of source rectangle in @fb | |
2810 | * @src_h: height of source rectangle in @fb | |
34a2ab5e | 2811 | * @ctx: lock acquire context |
042652ed DV |
2812 | * |
2813 | * Provides a default plane update handler using the atomic driver interface. | |
2814 | * | |
2815 | * RETURNS: | |
2816 | * Zero on success, error code on failure | |
2817 | */ | |
2818 | int drm_atomic_helper_update_plane(struct drm_plane *plane, | |
2819 | struct drm_crtc *crtc, | |
2820 | struct drm_framebuffer *fb, | |
2821 | int crtc_x, int crtc_y, | |
2822 | unsigned int crtc_w, unsigned int crtc_h, | |
2823 | uint32_t src_x, uint32_t src_y, | |
34a2ab5e DV |
2824 | uint32_t src_w, uint32_t src_h, |
2825 | struct drm_modeset_acquire_ctx *ctx) | |
042652ed DV |
2826 | { |
2827 | struct drm_atomic_state *state; | |
2828 | struct drm_plane_state *plane_state; | |
2829 | int ret = 0; | |
2830 | ||
2831 | state = drm_atomic_state_alloc(plane->dev); | |
2832 | if (!state) | |
2833 | return -ENOMEM; | |
2834 | ||
d26f96c7 | 2835 | state->acquire_ctx = ctx; |
042652ed DV |
2836 | plane_state = drm_atomic_get_plane_state(state, plane); |
2837 | if (IS_ERR(plane_state)) { | |
2838 | ret = PTR_ERR(plane_state); | |
2839 | goto fail; | |
2840 | } | |
2841 | ||
07cc0ef6 | 2842 | ret = drm_atomic_set_crtc_for_plane(plane_state, crtc); |
042652ed DV |
2843 | if (ret != 0) |
2844 | goto fail; | |
321ebf04 | 2845 | drm_atomic_set_fb_for_plane(plane_state, fb); |
042652ed DV |
2846 | plane_state->crtc_x = crtc_x; |
2847 | plane_state->crtc_y = crtc_y; | |
042652ed | 2848 | plane_state->crtc_w = crtc_w; |
02e6f379 | 2849 | plane_state->crtc_h = crtc_h; |
042652ed DV |
2850 | plane_state->src_x = src_x; |
2851 | plane_state->src_y = src_y; | |
042652ed | 2852 | plane_state->src_w = src_w; |
02e6f379 | 2853 | plane_state->src_h = src_h; |
042652ed | 2854 | |
3671c580 DV |
2855 | if (plane == crtc->cursor) |
2856 | state->legacy_cursor_update = true; | |
2857 | ||
042652ed | 2858 | ret = drm_atomic_commit(state); |
042652ed | 2859 | fail: |
0853695c | 2860 | drm_atomic_state_put(state); |
042652ed | 2861 | return ret; |
042652ed DV |
2862 | } |
2863 | EXPORT_SYMBOL(drm_atomic_helper_update_plane); | |
2864 | ||
2865 | /** | |
2866 | * drm_atomic_helper_disable_plane - Helper for primary plane disable using * atomic | |
2867 | * @plane: plane to disable | |
19315294 | 2868 | * @ctx: lock acquire context |
042652ed DV |
2869 | * |
2870 | * Provides a default plane disable handler using the atomic driver interface. | |
2871 | * | |
2872 | * RETURNS: | |
2873 | * Zero on success, error code on failure | |
2874 | */ | |
19315294 DV |
2875 | int drm_atomic_helper_disable_plane(struct drm_plane *plane, |
2876 | struct drm_modeset_acquire_ctx *ctx) | |
042652ed DV |
2877 | { |
2878 | struct drm_atomic_state *state; | |
2879 | struct drm_plane_state *plane_state; | |
2880 | int ret = 0; | |
2881 | ||
2882 | state = drm_atomic_state_alloc(plane->dev); | |
2883 | if (!state) | |
2884 | return -ENOMEM; | |
2885 | ||
d26f96c7 | 2886 | state->acquire_ctx = ctx; |
042652ed DV |
2887 | plane_state = drm_atomic_get_plane_state(state, plane); |
2888 | if (IS_ERR(plane_state)) { | |
2889 | ret = PTR_ERR(plane_state); | |
2890 | goto fail; | |
2891 | } | |
2892 | ||
a36c027d | 2893 | if (plane_state->crtc && plane_state->crtc->cursor == plane) |
24e79d0d ML |
2894 | plane_state->state->legacy_cursor_update = true; |
2895 | ||
bbb1e524 | 2896 | ret = __drm_atomic_helper_disable_plane(plane, plane_state); |
042652ed DV |
2897 | if (ret != 0) |
2898 | goto fail; | |
f02ad907 | 2899 | |
042652ed | 2900 | ret = drm_atomic_commit(state); |
042652ed | 2901 | fail: |
0853695c | 2902 | drm_atomic_state_put(state); |
042652ed | 2903 | return ret; |
042652ed DV |
2904 | } |
2905 | EXPORT_SYMBOL(drm_atomic_helper_disable_plane); | |
2906 | ||
042652ed DV |
2907 | /** |
2908 | * drm_atomic_helper_set_config - set a new config from userspace | |
2909 | * @set: mode set configuration | |
a4eff9aa | 2910 | * @ctx: lock acquisition context |
042652ed DV |
2911 | * |
2912 | * Provides a default crtc set_config handler using the atomic driver interface. | |
2913 | * | |
40ee6fbe MN |
2914 | * NOTE: For backwards compatibility with old userspace this automatically |
2915 | * resets the "link-status" property to GOOD, to force any link | |
2916 | * re-training. The SETCRTC ioctl does not define whether an update does | |
2917 | * need a full modeset or just a plane update, hence we're allowed to do | |
97e14fbe | 2918 | * that. See also drm_connector_set_link_status_property(). |
40ee6fbe | 2919 | * |
042652ed DV |
2920 | * Returns: |
2921 | * Returns 0 on success, negative errno numbers on failure. | |
2922 | */ | |
a4eff9aa DV |
2923 | int drm_atomic_helper_set_config(struct drm_mode_set *set, |
2924 | struct drm_modeset_acquire_ctx *ctx) | |
042652ed DV |
2925 | { |
2926 | struct drm_atomic_state *state; | |
2927 | struct drm_crtc *crtc = set->crtc; | |
042652ed DV |
2928 | int ret = 0; |
2929 | ||
2930 | state = drm_atomic_state_alloc(crtc->dev); | |
2931 | if (!state) | |
2932 | return -ENOMEM; | |
2933 | ||
38b6441e | 2934 | state->acquire_ctx = ctx; |
bbb1e524 RC |
2935 | ret = __drm_atomic_helper_set_config(set, state); |
2936 | if (ret != 0) | |
1fa4da04 | 2937 | goto fail; |
042652ed | 2938 | |
44596b8c ML |
2939 | ret = handle_conflicting_encoders(state, true); |
2940 | if (ret) | |
2941 | return ret; | |
2942 | ||
bbb1e524 | 2943 | ret = drm_atomic_commit(state); |
bbb1e524 | 2944 | |
1fa4da04 | 2945 | fail: |
0853695c | 2946 | drm_atomic_state_put(state); |
bbb1e524 | 2947 | return ret; |
bbb1e524 RC |
2948 | } |
2949 | EXPORT_SYMBOL(drm_atomic_helper_set_config); | |
2950 | ||
37406a60 SP |
2951 | /** |
2952 | * drm_atomic_helper_disable_all - disable all currently active outputs | |
2953 | * @dev: DRM device | |
2954 | * @ctx: lock acquisition context | |
2955 | * | |
2956 | * Loops through all connectors, finding those that aren't turned off and then | |
2957 | * turns them off by setting their DPMS mode to OFF and deactivating the CRTC | |
2958 | * that they are connected to. | |
2959 | * | |
2960 | * This is used for example in suspend/resume to disable all currently active | |
2961 | * functions when suspending. If you just want to shut down everything at e.g. | |
2962 | * driver unload, look at drm_atomic_helper_shutdown(). | |
2963 | * | |
2964 | * Note that if callers haven't already acquired all modeset locks this might | |
2965 | * return -EDEADLK, which must be handled by calling drm_modeset_backoff(). | |
2966 | * | |
2967 | * Returns: | |
2968 | * 0 on success or a negative error code on failure. | |
2969 | * | |
2970 | * See also: | |
2971 | * drm_atomic_helper_suspend(), drm_atomic_helper_resume() and | |
2972 | * drm_atomic_helper_shutdown(). | |
2973 | */ | |
2974 | int drm_atomic_helper_disable_all(struct drm_device *dev, | |
2975 | struct drm_modeset_acquire_ctx *ctx) | |
14942760 TR |
2976 | { |
2977 | struct drm_atomic_state *state; | |
9b2104f4 | 2978 | struct drm_connector_state *conn_state; |
14942760 | 2979 | struct drm_connector *conn; |
9b2104f4 ML |
2980 | struct drm_plane_state *plane_state; |
2981 | struct drm_plane *plane; | |
2982 | struct drm_crtc_state *crtc_state; | |
2983 | struct drm_crtc *crtc; | |
2984 | int ret, i; | |
14942760 TR |
2985 | |
2986 | state = drm_atomic_state_alloc(dev); | |
2987 | if (!state) | |
2988 | return -ENOMEM; | |
2989 | ||
2990 | state->acquire_ctx = ctx; | |
2991 | ||
9b2104f4 | 2992 | drm_for_each_crtc(crtc, dev) { |
14942760 TR |
2993 | crtc_state = drm_atomic_get_crtc_state(state, crtc); |
2994 | if (IS_ERR(crtc_state)) { | |
9b2104f4 | 2995 | ret = PTR_ERR(crtc_state); |
14942760 TR |
2996 | goto free; |
2997 | } | |
2998 | ||
2999 | crtc_state->active = false; | |
9b2104f4 ML |
3000 | |
3001 | ret = drm_atomic_set_mode_prop_for_crtc(crtc_state, NULL); | |
3002 | if (ret < 0) | |
3003 | goto free; | |
3004 | ||
3005 | ret = drm_atomic_add_affected_planes(state, crtc); | |
3006 | if (ret < 0) | |
3007 | goto free; | |
3008 | ||
3009 | ret = drm_atomic_add_affected_connectors(state, crtc); | |
3010 | if (ret < 0) | |
3011 | goto free; | |
3012 | } | |
3013 | ||
dfb8bb3b | 3014 | for_each_new_connector_in_state(state, conn, conn_state, i) { |
9b2104f4 ML |
3015 | ret = drm_atomic_set_crtc_for_connector(conn_state, NULL); |
3016 | if (ret < 0) | |
3017 | goto free; | |
3018 | } | |
3019 | ||
dfb8bb3b | 3020 | for_each_new_plane_in_state(state, plane, plane_state, i) { |
9b2104f4 ML |
3021 | ret = drm_atomic_set_crtc_for_plane(plane_state, NULL); |
3022 | if (ret < 0) | |
3023 | goto free; | |
3024 | ||
3025 | drm_atomic_set_fb_for_plane(plane_state, NULL); | |
14942760 TR |
3026 | } |
3027 | ||
9b2104f4 | 3028 | ret = drm_atomic_commit(state); |
14942760 | 3029 | free: |
0853695c | 3030 | drm_atomic_state_put(state); |
9b2104f4 | 3031 | return ret; |
14942760 TR |
3032 | } |
3033 | EXPORT_SYMBOL(drm_atomic_helper_disable_all); | |
3034 | ||
18dddadc DV |
3035 | /** |
3036 | * drm_atomic_helper_shutdown - shutdown all CRTC | |
3037 | * @dev: DRM device | |
3038 | * | |
3039 | * This shuts down all CRTC, which is useful for driver unloading. Shutdown on | |
3040 | * suspend should instead be handled with drm_atomic_helper_suspend(), since | |
3041 | * that also takes a snapshot of the modeset state to be restored on resume. | |
3042 | * | |
3043 | * This is just a convenience wrapper around drm_atomic_helper_disable_all(), | |
3044 | * and it is the atomic version of drm_crtc_force_disable_all(). | |
3045 | */ | |
3046 | void drm_atomic_helper_shutdown(struct drm_device *dev) | |
3047 | { | |
3048 | struct drm_modeset_acquire_ctx ctx; | |
3049 | int ret; | |
3050 | ||
b7ea04d2 | 3051 | DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, 0, ret); |
18dddadc | 3052 | |
37406a60 | 3053 | ret = drm_atomic_helper_disable_all(dev, &ctx); |
18dddadc DV |
3054 | if (ret) |
3055 | DRM_ERROR("Disabling all crtc's during unload failed with %i\n", ret); | |
3056 | ||
b7ea04d2 | 3057 | DRM_MODESET_LOCK_ALL_END(ctx, ret); |
18dddadc DV |
3058 | } |
3059 | EXPORT_SYMBOL(drm_atomic_helper_shutdown); | |
3060 | ||
1d8224e7 DV |
3061 | /** |
3062 | * drm_atomic_helper_duplicate_state - duplicate an atomic state object | |
3063 | * @dev: DRM device | |
3064 | * @ctx: lock acquisition context | |
3065 | * | |
3066 | * Makes a copy of the current atomic state by looping over all objects and | |
3067 | * duplicating their respective states. This is used for example by suspend/ | |
3068 | * resume support code to save the state prior to suspend such that it can | |
3069 | * be restored upon resume. | |
3070 | * | |
3071 | * Note that this treats atomic state as persistent between save and restore. | |
3072 | * Drivers must make sure that this is possible and won't result in confusion | |
3073 | * or erroneous behaviour. | |
3074 | * | |
3075 | * Note that if callers haven't already acquired all modeset locks this might | |
3076 | * return -EDEADLK, which must be handled by calling drm_modeset_backoff(). | |
3077 | * | |
3078 | * Returns: | |
3079 | * A pointer to the copy of the atomic state object on success or an | |
3080 | * ERR_PTR()-encoded error code on failure. | |
3081 | * | |
3082 | * See also: | |
3083 | * drm_atomic_helper_suspend(), drm_atomic_helper_resume() | |
3084 | */ | |
3085 | struct drm_atomic_state * | |
3086 | drm_atomic_helper_duplicate_state(struct drm_device *dev, | |
3087 | struct drm_modeset_acquire_ctx *ctx) | |
3088 | { | |
3089 | struct drm_atomic_state *state; | |
3090 | struct drm_connector *conn; | |
3091 | struct drm_connector_list_iter conn_iter; | |
3092 | struct drm_plane *plane; | |
3093 | struct drm_crtc *crtc; | |
3094 | int err = 0; | |
3095 | ||
3096 | state = drm_atomic_state_alloc(dev); | |
3097 | if (!state) | |
3098 | return ERR_PTR(-ENOMEM); | |
3099 | ||
3100 | state->acquire_ctx = ctx; | |
022debad | 3101 | state->duplicated = true; |
1d8224e7 DV |
3102 | |
3103 | drm_for_each_crtc(crtc, dev) { | |
3104 | struct drm_crtc_state *crtc_state; | |
3105 | ||
3106 | crtc_state = drm_atomic_get_crtc_state(state, crtc); | |
3107 | if (IS_ERR(crtc_state)) { | |
3108 | err = PTR_ERR(crtc_state); | |
3109 | goto free; | |
3110 | } | |
3111 | } | |
3112 | ||
3113 | drm_for_each_plane(plane, dev) { | |
3114 | struct drm_plane_state *plane_state; | |
3115 | ||
3116 | plane_state = drm_atomic_get_plane_state(state, plane); | |
3117 | if (IS_ERR(plane_state)) { | |
3118 | err = PTR_ERR(plane_state); | |
3119 | goto free; | |
3120 | } | |
3121 | } | |
3122 | ||
3123 | drm_connector_list_iter_begin(dev, &conn_iter); | |
3124 | drm_for_each_connector_iter(conn, &conn_iter) { | |
3125 | struct drm_connector_state *conn_state; | |
3126 | ||
3127 | conn_state = drm_atomic_get_connector_state(state, conn); | |
3128 | if (IS_ERR(conn_state)) { | |
3129 | err = PTR_ERR(conn_state); | |
3130 | drm_connector_list_iter_end(&conn_iter); | |
3131 | goto free; | |
3132 | } | |
3133 | } | |
3134 | drm_connector_list_iter_end(&conn_iter); | |
3135 | ||
3136 | /* clear the acquire context so that it isn't accidentally reused */ | |
3137 | state->acquire_ctx = NULL; | |
3138 | ||
3139 | free: | |
3140 | if (err < 0) { | |
3141 | drm_atomic_state_put(state); | |
3142 | state = ERR_PTR(err); | |
3143 | } | |
3144 | ||
3145 | return state; | |
3146 | } | |
3147 | EXPORT_SYMBOL(drm_atomic_helper_duplicate_state); | |
3148 | ||
14942760 TR |
3149 | /** |
3150 | * drm_atomic_helper_suspend - subsystem-level suspend helper | |
3151 | * @dev: DRM device | |
3152 | * | |
3153 | * Duplicates the current atomic state, disables all active outputs and then | |
3154 | * returns a pointer to the original atomic state to the caller. Drivers can | |
3155 | * pass this pointer to the drm_atomic_helper_resume() helper upon resume to | |
3156 | * restore the output configuration that was active at the time the system | |
3157 | * entered suspend. | |
3158 | * | |
3159 | * Note that it is potentially unsafe to use this. The atomic state object | |
3160 | * returned by this function is assumed to be persistent. Drivers must ensure | |
3161 | * that this holds true. Before calling this function, drivers must make sure | |
3162 | * to suspend fbdev emulation so that nothing can be using the device. | |
3163 | * | |
3164 | * Returns: | |
3165 | * A pointer to a copy of the state before suspend on success or an ERR_PTR()- | |
3166 | * encoded error code on failure. Drivers should store the returned atomic | |
3167 | * state object and pass it to the drm_atomic_helper_resume() helper upon | |
3168 | * resume. | |
3169 | * | |
3170 | * See also: | |
3171 | * drm_atomic_helper_duplicate_state(), drm_atomic_helper_disable_all(), | |
581e49fe | 3172 | * drm_atomic_helper_resume(), drm_atomic_helper_commit_duplicated_state() |
14942760 TR |
3173 | */ |
3174 | struct drm_atomic_state *drm_atomic_helper_suspend(struct drm_device *dev) | |
3175 | { | |
3176 | struct drm_modeset_acquire_ctx ctx; | |
3177 | struct drm_atomic_state *state; | |
3178 | int err; | |
3179 | ||
615aa3d9 SP |
3180 | /* This can never be returned, but it makes the compiler happy */ |
3181 | state = ERR_PTR(-EINVAL); | |
14942760 | 3182 | |
b7ea04d2 | 3183 | DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, 0, err); |
14942760 TR |
3184 | |
3185 | state = drm_atomic_helper_duplicate_state(dev, &ctx); | |
3186 | if (IS_ERR(state)) | |
3187 | goto unlock; | |
3188 | ||
3189 | err = drm_atomic_helper_disable_all(dev, &ctx); | |
3190 | if (err < 0) { | |
0853695c | 3191 | drm_atomic_state_put(state); |
14942760 TR |
3192 | state = ERR_PTR(err); |
3193 | goto unlock; | |
3194 | } | |
3195 | ||
3196 | unlock: | |
b7ea04d2 SP |
3197 | DRM_MODESET_LOCK_ALL_END(ctx, err); |
3198 | if (err) | |
3199 | return ERR_PTR(err); | |
14942760 | 3200 | |
14942760 TR |
3201 | return state; |
3202 | } | |
3203 | EXPORT_SYMBOL(drm_atomic_helper_suspend); | |
3204 | ||
581e49fe ML |
3205 | /** |
3206 | * drm_atomic_helper_commit_duplicated_state - commit duplicated state | |
3207 | * @state: duplicated atomic state to commit | |
3208 | * @ctx: pointer to acquire_ctx to use for commit. | |
3209 | * | |
3210 | * The state returned by drm_atomic_helper_duplicate_state() and | |
3211 | * drm_atomic_helper_suspend() is partially invalid, and needs to | |
3212 | * be fixed up before commit. | |
3213 | * | |
3214 | * Returns: | |
3215 | * 0 on success or a negative error code on failure. | |
3216 | * | |
3217 | * See also: | |
3218 | * drm_atomic_helper_suspend() | |
3219 | */ | |
3220 | int drm_atomic_helper_commit_duplicated_state(struct drm_atomic_state *state, | |
3221 | struct drm_modeset_acquire_ctx *ctx) | |
3222 | { | |
aa394b0d | 3223 | int i, ret; |
581e49fe | 3224 | struct drm_plane *plane; |
415c3ac3 | 3225 | struct drm_plane_state *new_plane_state; |
581e49fe | 3226 | struct drm_connector *connector; |
415c3ac3 | 3227 | struct drm_connector_state *new_conn_state; |
581e49fe | 3228 | struct drm_crtc *crtc; |
415c3ac3 | 3229 | struct drm_crtc_state *new_crtc_state; |
581e49fe ML |
3230 | |
3231 | state->acquire_ctx = ctx; | |
3232 | ||
e00fb856 | 3233 | for_each_new_plane_in_state(state, plane, new_plane_state, i) |
581e49fe ML |
3234 | state->planes[i].old_state = plane->state; |
3235 | ||
415c3ac3 | 3236 | for_each_new_crtc_in_state(state, crtc, new_crtc_state, i) |
581e49fe ML |
3237 | state->crtcs[i].old_state = crtc->state; |
3238 | ||
415c3ac3 | 3239 | for_each_new_connector_in_state(state, connector, new_conn_state, i) |
581e49fe ML |
3240 | state->connectors[i].old_state = connector->state; |
3241 | ||
aa394b0d SP |
3242 | ret = drm_atomic_commit(state); |
3243 | ||
3244 | state->acquire_ctx = NULL; | |
3245 | ||
3246 | return ret; | |
581e49fe ML |
3247 | } |
3248 | EXPORT_SYMBOL(drm_atomic_helper_commit_duplicated_state); | |
3249 | ||
14942760 TR |
3250 | /** |
3251 | * drm_atomic_helper_resume - subsystem-level resume helper | |
3252 | * @dev: DRM device | |
3253 | * @state: atomic state to resume to | |
3254 | * | |
3255 | * Calls drm_mode_config_reset() to synchronize hardware and software states, | |
3256 | * grabs all modeset locks and commits the atomic state object. This can be | |
3257 | * used in conjunction with the drm_atomic_helper_suspend() helper to | |
3258 | * implement suspend/resume for drivers that support atomic mode-setting. | |
3259 | * | |
3260 | * Returns: | |
3261 | * 0 on success or a negative error code on failure. | |
3262 | * | |
3263 | * See also: | |
3264 | * drm_atomic_helper_suspend() | |
3265 | */ | |
3266 | int drm_atomic_helper_resume(struct drm_device *dev, | |
3267 | struct drm_atomic_state *state) | |
3268 | { | |
a5b8444e | 3269 | struct drm_modeset_acquire_ctx ctx; |
14942760 TR |
3270 | int err; |
3271 | ||
3272 | drm_mode_config_reset(dev); | |
581e49fe | 3273 | |
b7ea04d2 | 3274 | DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, 0, err); |
869e188a | 3275 | |
b7ea04d2 | 3276 | err = drm_atomic_helper_commit_duplicated_state(state, &ctx); |
a5b8444e | 3277 | |
b7ea04d2 | 3278 | DRM_MODESET_LOCK_ALL_END(ctx, err); |
6d281b1f | 3279 | drm_atomic_state_put(state); |
14942760 TR |
3280 | |
3281 | return err; | |
3282 | } | |
3283 | EXPORT_SYMBOL(drm_atomic_helper_resume); | |
3284 | ||
8c3a8181 DV |
3285 | static int page_flip_common(struct drm_atomic_state *state, |
3286 | struct drm_crtc *crtc, | |
3287 | struct drm_framebuffer *fb, | |
3288 | struct drm_pending_vblank_event *event, | |
3289 | uint32_t flags) | |
f869a6ec AG |
3290 | { |
3291 | struct drm_plane *plane = crtc->primary; | |
3292 | struct drm_plane_state *plane_state; | |
3293 | struct drm_crtc_state *crtc_state; | |
3294 | int ret = 0; | |
3295 | ||
3296 | crtc_state = drm_atomic_get_crtc_state(state, crtc); | |
3297 | if (IS_ERR(crtc_state)) | |
3298 | return PTR_ERR(crtc_state); | |
3299 | ||
3300 | crtc_state->event = event; | |
4d85f45c | 3301 | crtc_state->async_flip = flags & DRM_MODE_PAGE_FLIP_ASYNC; |
f869a6ec AG |
3302 | |
3303 | plane_state = drm_atomic_get_plane_state(state, plane); | |
3304 | if (IS_ERR(plane_state)) | |
3305 | return PTR_ERR(plane_state); | |
3306 | ||
f869a6ec AG |
3307 | ret = drm_atomic_set_crtc_for_plane(plane_state, crtc); |
3308 | if (ret != 0) | |
3309 | return ret; | |
3310 | drm_atomic_set_fb_for_plane(plane_state, fb); | |
3311 | ||
3312 | /* Make sure we don't accidentally do a full modeset. */ | |
3313 | state->allow_modeset = false; | |
3314 | if (!crtc_state->active) { | |
6ac7c548 RK |
3315 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] disabled, rejecting legacy flip\n", |
3316 | crtc->base.id, crtc->name); | |
f869a6ec AG |
3317 | return -EINVAL; |
3318 | } | |
3319 | ||
3320 | return ret; | |
3321 | } | |
3322 | ||
8bc0f312 DV |
3323 | /** |
3324 | * drm_atomic_helper_page_flip - execute a legacy page flip | |
3325 | * @crtc: DRM crtc | |
3326 | * @fb: DRM framebuffer | |
3327 | * @event: optional DRM event to signal upon completion | |
3328 | * @flags: flip flags for non-vblank sync'ed updates | |
41292b1f | 3329 | * @ctx: lock acquisition context |
8bc0f312 | 3330 | * |
f869a6ec AG |
3331 | * Provides a default &drm_crtc_funcs.page_flip implementation |
3332 | * using the atomic driver interface. | |
8bc0f312 | 3333 | * |
8bc0f312 DV |
3334 | * Returns: |
3335 | * Returns 0 on success, negative errno numbers on failure. | |
f869a6ec AG |
3336 | * |
3337 | * See also: | |
3338 | * drm_atomic_helper_page_flip_target() | |
8bc0f312 DV |
3339 | */ |
3340 | int drm_atomic_helper_page_flip(struct drm_crtc *crtc, | |
3341 | struct drm_framebuffer *fb, | |
3342 | struct drm_pending_vblank_event *event, | |
41292b1f DV |
3343 | uint32_t flags, |
3344 | struct drm_modeset_acquire_ctx *ctx) | |
8bc0f312 DV |
3345 | { |
3346 | struct drm_plane *plane = crtc->primary; | |
3347 | struct drm_atomic_state *state; | |
8bc0f312 DV |
3348 | int ret = 0; |
3349 | ||
8bc0f312 DV |
3350 | state = drm_atomic_state_alloc(plane->dev); |
3351 | if (!state) | |
3352 | return -ENOMEM; | |
3353 | ||
043e7fb6 | 3354 | state->acquire_ctx = ctx; |
f869a6ec | 3355 | |
6cbe5c46 | 3356 | ret = page_flip_common(state, crtc, fb, event, flags); |
f869a6ec | 3357 | if (ret != 0) |
8bc0f312 | 3358 | goto fail; |
8bc0f312 | 3359 | |
f869a6ec | 3360 | ret = drm_atomic_nonblocking_commit(state); |
f869a6ec | 3361 | fail: |
f869a6ec AG |
3362 | drm_atomic_state_put(state); |
3363 | return ret; | |
f869a6ec AG |
3364 | } |
3365 | EXPORT_SYMBOL(drm_atomic_helper_page_flip); | |
3366 | ||
3367 | /** | |
3368 | * drm_atomic_helper_page_flip_target - do page flip on target vblank period. | |
3369 | * @crtc: DRM crtc | |
3370 | * @fb: DRM framebuffer | |
3371 | * @event: optional DRM event to signal upon completion | |
3372 | * @flags: flip flags for non-vblank sync'ed updates | |
3373 | * @target: specifying the target vblank period when the flip to take effect | |
41292b1f | 3374 | * @ctx: lock acquisition context |
f869a6ec AG |
3375 | * |
3376 | * Provides a default &drm_crtc_funcs.page_flip_target implementation. | |
3377 | * Similar to drm_atomic_helper_page_flip() with extra parameter to specify | |
3378 | * target vblank period to flip. | |
3379 | * | |
3380 | * Returns: | |
3381 | * Returns 0 on success, negative errno numbers on failure. | |
3382 | */ | |
8c3a8181 DV |
3383 | int drm_atomic_helper_page_flip_target(struct drm_crtc *crtc, |
3384 | struct drm_framebuffer *fb, | |
3385 | struct drm_pending_vblank_event *event, | |
3386 | uint32_t flags, | |
3387 | uint32_t target, | |
3388 | struct drm_modeset_acquire_ctx *ctx) | |
f869a6ec AG |
3389 | { |
3390 | struct drm_plane *plane = crtc->primary; | |
3391 | struct drm_atomic_state *state; | |
3392 | struct drm_crtc_state *crtc_state; | |
3393 | int ret = 0; | |
3394 | ||
f869a6ec AG |
3395 | state = drm_atomic_state_alloc(plane->dev); |
3396 | if (!state) | |
3397 | return -ENOMEM; | |
3398 | ||
043e7fb6 | 3399 | state->acquire_ctx = ctx; |
f869a6ec | 3400 | |
6cbe5c46 | 3401 | ret = page_flip_common(state, crtc, fb, event, flags); |
8bc0f312 DV |
3402 | if (ret != 0) |
3403 | goto fail; | |
8bc0f312 | 3404 | |
b4d93679 | 3405 | crtc_state = drm_atomic_get_new_crtc_state(state, crtc); |
f869a6ec | 3406 | if (WARN_ON(!crtc_state)) { |
4cba6850 DV |
3407 | ret = -EINVAL; |
3408 | goto fail; | |
3409 | } | |
f869a6ec | 3410 | crtc_state->target_vblank = target; |
4cba6850 | 3411 | |
b837ba0a | 3412 | ret = drm_atomic_nonblocking_commit(state); |
8bc0f312 | 3413 | fail: |
0853695c | 3414 | drm_atomic_state_put(state); |
8bc0f312 | 3415 | return ret; |
8bc0f312 | 3416 | } |
f869a6ec | 3417 | EXPORT_SYMBOL(drm_atomic_helper_page_flip_target); |
1d8224e7 DV |
3418 | |
3419 | /** | |
3420 | * drm_atomic_helper_legacy_gamma_set - set the legacy gamma correction table | |
3421 | * @crtc: CRTC object | |
3422 | * @red: red correction table | |
3423 | * @green: green correction table | |
3424 | * @blue: green correction table | |
3425 | * @size: size of the tables | |
3426 | * @ctx: lock acquire context | |
3427 | * | |
3428 | * Implements support for legacy gamma correction table for drivers | |
3429 | * that support color management through the DEGAMMA_LUT/GAMMA_LUT | |
3430 | * properties. See drm_crtc_enable_color_mgmt() and the containing chapter for | |
3431 | * how the atomic color management and gamma tables work. | |
3432 | */ | |
3433 | int drm_atomic_helper_legacy_gamma_set(struct drm_crtc *crtc, | |
3434 | u16 *red, u16 *green, u16 *blue, | |
3435 | uint32_t size, | |
3436 | struct drm_modeset_acquire_ctx *ctx) | |
3437 | { | |
3438 | struct drm_device *dev = crtc->dev; | |
3439 | struct drm_atomic_state *state; | |
3440 | struct drm_crtc_state *crtc_state; | |
3441 | struct drm_property_blob *blob = NULL; | |
3442 | struct drm_color_lut *blob_data; | |
3443 | int i, ret = 0; | |
3444 | bool replaced; | |
3445 | ||
3446 | state = drm_atomic_state_alloc(crtc->dev); | |
3447 | if (!state) | |
3448 | return -ENOMEM; | |
3449 | ||
3450 | blob = drm_property_create_blob(dev, | |
3451 | sizeof(struct drm_color_lut) * size, | |
3452 | NULL); | |
3453 | if (IS_ERR(blob)) { | |
3454 | ret = PTR_ERR(blob); | |
3455 | blob = NULL; | |
3456 | goto fail; | |
3457 | } | |
3458 | ||
3459 | /* Prepare GAMMA_LUT with the legacy values. */ | |
3460 | blob_data = blob->data; | |
3461 | for (i = 0; i < size; i++) { | |
3462 | blob_data[i].red = red[i]; | |
3463 | blob_data[i].green = green[i]; | |
3464 | blob_data[i].blue = blue[i]; | |
3465 | } | |
3466 | ||
3467 | state->acquire_ctx = ctx; | |
3468 | crtc_state = drm_atomic_get_crtc_state(state, crtc); | |
3469 | if (IS_ERR(crtc_state)) { | |
3470 | ret = PTR_ERR(crtc_state); | |
3471 | goto fail; | |
3472 | } | |
3473 | ||
3474 | /* Reset DEGAMMA_LUT and CTM properties. */ | |
3475 | replaced = drm_property_replace_blob(&crtc_state->degamma_lut, NULL); | |
3476 | replaced |= drm_property_replace_blob(&crtc_state->ctm, NULL); | |
3477 | replaced |= drm_property_replace_blob(&crtc_state->gamma_lut, blob); | |
3478 | crtc_state->color_mgmt_changed |= replaced; | |
3479 | ||
3480 | ret = drm_atomic_commit(state); | |
3481 | ||
3482 | fail: | |
3483 | drm_atomic_state_put(state); | |
3484 | drm_property_blob_put(blob); | |
3485 | return ret; | |
3486 | } | |
3487 | EXPORT_SYMBOL(drm_atomic_helper_legacy_gamma_set); |