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c2fcd274 DV |
1 | /* |
2 | * Copyright (C) 2014 Red Hat | |
3 | * Copyright (C) 2014 Intel Corp. | |
4 | * | |
5 | * Permission is hereby granted, free of charge, to any person obtaining a | |
6 | * copy of this software and associated documentation files (the "Software"), | |
7 | * to deal in the Software without restriction, including without limitation | |
8 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
9 | * and/or sell copies of the Software, and to permit persons to whom the | |
10 | * Software is furnished to do so, subject to the following conditions: | |
11 | * | |
12 | * The above copyright notice and this permission notice shall be included in | |
13 | * all copies or substantial portions of the Software. | |
14 | * | |
15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
18 | * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR | |
19 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, | |
20 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR | |
21 | * OTHER DEALINGS IN THE SOFTWARE. | |
22 | * | |
23 | * Authors: | |
24 | * Rob Clark <robdclark@gmail.com> | |
25 | * Daniel Vetter <daniel.vetter@ffwll.ch> | |
26 | */ | |
27 | ||
28 | #include <drm/drmP.h> | |
29 | #include <drm/drm_atomic.h> | |
30 | #include <drm/drm_plane_helper.h> | |
31 | #include <drm/drm_crtc_helper.h> | |
623369e5 | 32 | #include <drm/drm_atomic_helper.h> |
935774cd | 33 | #include <drm/drm_writeback.h> |
f54d1867 | 34 | #include <linux/dma-fence.h> |
c2fcd274 | 35 | |
faf94a08 | 36 | #include "drm_crtc_helper_internal.h" |
44d1240d MS |
37 | #include "drm_crtc_internal.h" |
38 | ||
3150c7d0 DV |
39 | /** |
40 | * DOC: overview | |
41 | * | |
42 | * This helper library provides implementations of check and commit functions on | |
43 | * top of the CRTC modeset helper callbacks and the plane helper callbacks. It | |
44 | * also provides convenience implementations for the atomic state handling | |
45 | * callbacks for drivers which don't need to subclass the drm core structures to | |
46 | * add their own additional internal state. | |
47 | * | |
48 | * This library also provides default implementations for the check callback in | |
26196f7e DV |
49 | * drm_atomic_helper_check() and for the commit callback with |
50 | * drm_atomic_helper_commit(). But the individual stages and callbacks are | |
51 | * exposed to allow drivers to mix and match and e.g. use the plane helpers only | |
3150c7d0 DV |
52 | * together with a driver private modeset implementation. |
53 | * | |
54 | * This library also provides implementations for all the legacy driver | |
26196f7e DV |
55 | * interfaces on top of the atomic interface. See drm_atomic_helper_set_config(), |
56 | * drm_atomic_helper_disable_plane(), drm_atomic_helper_disable_plane() and the | |
3150c7d0 DV |
57 | * various functions to implement set_property callbacks. New drivers must not |
58 | * implement these functions themselves but must use the provided helpers. | |
092d01da DV |
59 | * |
60 | * The atomic helper uses the same function table structures as all other | |
ea0dd85a DV |
61 | * modesetting helpers. See the documentation for &struct drm_crtc_helper_funcs, |
62 | * struct &drm_encoder_helper_funcs and &struct drm_connector_helper_funcs. It | |
63 | * also shares the &struct drm_plane_helper_funcs function table with the plane | |
092d01da | 64 | * helpers. |
3150c7d0 | 65 | */ |
c2fcd274 DV |
66 | static void |
67 | drm_atomic_helper_plane_changed(struct drm_atomic_state *state, | |
415c3ac3 | 68 | struct drm_plane_state *old_plane_state, |
c2fcd274 DV |
69 | struct drm_plane_state *plane_state, |
70 | struct drm_plane *plane) | |
71 | { | |
72 | struct drm_crtc_state *crtc_state; | |
73 | ||
415c3ac3 | 74 | if (old_plane_state->crtc) { |
b4d93679 ML |
75 | crtc_state = drm_atomic_get_new_crtc_state(state, |
76 | old_plane_state->crtc); | |
c2fcd274 DV |
77 | |
78 | if (WARN_ON(!crtc_state)) | |
79 | return; | |
80 | ||
81 | crtc_state->planes_changed = true; | |
82 | } | |
83 | ||
84 | if (plane_state->crtc) { | |
b4d93679 | 85 | crtc_state = drm_atomic_get_new_crtc_state(state, plane_state->crtc); |
c2fcd274 DV |
86 | |
87 | if (WARN_ON(!crtc_state)) | |
88 | return; | |
89 | ||
90 | crtc_state->planes_changed = true; | |
91 | } | |
92 | } | |
93 | ||
8248b65d ML |
94 | static int handle_conflicting_encoders(struct drm_atomic_state *state, |
95 | bool disable_conflicting_encoders) | |
97ac3204 | 96 | { |
415c3ac3 | 97 | struct drm_connector_state *new_conn_state; |
40616a26 | 98 | struct drm_connector *connector; |
c36a3254 | 99 | struct drm_connector_list_iter conn_iter; |
40616a26 ML |
100 | struct drm_encoder *encoder; |
101 | unsigned encoder_mask = 0; | |
c36a3254 | 102 | int i, ret = 0; |
97ac3204 | 103 | |
8248b65d ML |
104 | /* |
105 | * First loop, find all newly assigned encoders from the connectors | |
106 | * part of the state. If the same encoder is assigned to multiple | |
107 | * connectors bail out. | |
108 | */ | |
415c3ac3 | 109 | for_each_new_connector_in_state(state, connector, new_conn_state, i) { |
40616a26 ML |
110 | const struct drm_connector_helper_funcs *funcs = connector->helper_private; |
111 | struct drm_encoder *new_encoder; | |
112 | ||
415c3ac3 | 113 | if (!new_conn_state->crtc) |
97ac3204 DV |
114 | continue; |
115 | ||
40616a26 | 116 | if (funcs->atomic_best_encoder) |
415c3ac3 | 117 | new_encoder = funcs->atomic_best_encoder(connector, new_conn_state); |
a0909cc5 | 118 | else if (funcs->best_encoder) |
40616a26 | 119 | new_encoder = funcs->best_encoder(connector); |
a0909cc5 BB |
120 | else |
121 | new_encoder = drm_atomic_helper_best_encoder(connector); | |
40616a26 | 122 | |
8248b65d | 123 | if (new_encoder) { |
6f3be036 | 124 | if (encoder_mask & drm_encoder_mask(new_encoder)) { |
8248b65d ML |
125 | DRM_DEBUG_ATOMIC("[ENCODER:%d:%s] on [CONNECTOR:%d:%s] already assigned\n", |
126 | new_encoder->base.id, new_encoder->name, | |
127 | connector->base.id, connector->name); | |
128 | ||
129 | return -EINVAL; | |
130 | } | |
131 | ||
6f3be036 | 132 | encoder_mask |= drm_encoder_mask(new_encoder); |
8248b65d | 133 | } |
97ac3204 DV |
134 | } |
135 | ||
8248b65d ML |
136 | if (!encoder_mask) |
137 | return 0; | |
97ac3204 | 138 | |
8248b65d ML |
139 | /* |
140 | * Second loop, iterate over all connectors not part of the state. | |
141 | * | |
142 | * If a conflicting encoder is found and disable_conflicting_encoders | |
143 | * is not set, an error is returned. Userspace can provide a solution | |
144 | * through the atomic ioctl. | |
145 | * | |
146 | * If the flag is set conflicting connectors are removed from the crtc | |
147 | * and the crtc is disabled if no encoder is left. This preserves | |
148 | * compatibility with the legacy set_config behavior. | |
149 | */ | |
b982dab1 | 150 | drm_connector_list_iter_begin(state->dev, &conn_iter); |
c36a3254 | 151 | drm_for_each_connector_iter(connector, &conn_iter) { |
40616a26 | 152 | struct drm_crtc_state *crtc_state; |
623369e5 | 153 | |
b4d93679 | 154 | if (drm_atomic_get_new_connector_state(state, connector)) |
40616a26 | 155 | continue; |
623369e5 | 156 | |
40616a26 | 157 | encoder = connector->state->best_encoder; |
6f3be036 | 158 | if (!encoder || !(encoder_mask & drm_encoder_mask(encoder))) |
623369e5 DV |
159 | continue; |
160 | ||
8248b65d ML |
161 | if (!disable_conflicting_encoders) { |
162 | DRM_DEBUG_ATOMIC("[ENCODER:%d:%s] in use on [CRTC:%d:%s] by [CONNECTOR:%d:%s]\n", | |
163 | encoder->base.id, encoder->name, | |
164 | connector->state->crtc->base.id, | |
165 | connector->state->crtc->name, | |
166 | connector->base.id, connector->name); | |
c36a3254 DV |
167 | ret = -EINVAL; |
168 | goto out; | |
8248b65d ML |
169 | } |
170 | ||
415c3ac3 ML |
171 | new_conn_state = drm_atomic_get_connector_state(state, connector); |
172 | if (IS_ERR(new_conn_state)) { | |
173 | ret = PTR_ERR(new_conn_state); | |
c36a3254 DV |
174 | goto out; |
175 | } | |
40616a26 ML |
176 | |
177 | DRM_DEBUG_ATOMIC("[ENCODER:%d:%s] in use on [CRTC:%d:%s], disabling [CONNECTOR:%d:%s]\n", | |
178 | encoder->base.id, encoder->name, | |
415c3ac3 | 179 | new_conn_state->crtc->base.id, new_conn_state->crtc->name, |
40616a26 ML |
180 | connector->base.id, connector->name); |
181 | ||
b4d93679 | 182 | crtc_state = drm_atomic_get_new_crtc_state(state, new_conn_state->crtc); |
40616a26 | 183 | |
415c3ac3 | 184 | ret = drm_atomic_set_crtc_for_connector(new_conn_state, NULL); |
40616a26 | 185 | if (ret) |
c36a3254 | 186 | goto out; |
40616a26 ML |
187 | |
188 | if (!crtc_state->connector_mask) { | |
189 | ret = drm_atomic_set_mode_prop_for_crtc(crtc_state, | |
190 | NULL); | |
191 | if (ret < 0) | |
c36a3254 | 192 | goto out; |
40616a26 ML |
193 | |
194 | crtc_state->active = false; | |
195 | } | |
623369e5 | 196 | } |
c36a3254 | 197 | out: |
b982dab1 | 198 | drm_connector_list_iter_end(&conn_iter); |
623369e5 | 199 | |
c36a3254 | 200 | return ret; |
623369e5 DV |
201 | } |
202 | ||
e87a52b3 ML |
203 | static void |
204 | set_best_encoder(struct drm_atomic_state *state, | |
205 | struct drm_connector_state *conn_state, | |
206 | struct drm_encoder *encoder) | |
207 | { | |
208 | struct drm_crtc_state *crtc_state; | |
209 | struct drm_crtc *crtc; | |
210 | ||
211 | if (conn_state->best_encoder) { | |
212 | /* Unset the encoder_mask in the old crtc state. */ | |
213 | crtc = conn_state->connector->state->crtc; | |
214 | ||
215 | /* A NULL crtc is an error here because we should have | |
216 | * duplicated a NULL best_encoder when crtc was NULL. | |
217 | * As an exception restoring duplicated atomic state | |
218 | * during resume is allowed, so don't warn when | |
219 | * best_encoder is equal to encoder we intend to set. | |
220 | */ | |
221 | WARN_ON(!crtc && encoder != conn_state->best_encoder); | |
222 | if (crtc) { | |
b4d93679 | 223 | crtc_state = drm_atomic_get_new_crtc_state(state, crtc); |
e87a52b3 ML |
224 | |
225 | crtc_state->encoder_mask &= | |
6f3be036 | 226 | ~drm_encoder_mask(conn_state->best_encoder); |
e87a52b3 ML |
227 | } |
228 | } | |
229 | ||
230 | if (encoder) { | |
231 | crtc = conn_state->crtc; | |
232 | WARN_ON(!crtc); | |
233 | if (crtc) { | |
b4d93679 | 234 | crtc_state = drm_atomic_get_new_crtc_state(state, crtc); |
e87a52b3 ML |
235 | |
236 | crtc_state->encoder_mask |= | |
6f3be036 | 237 | drm_encoder_mask(encoder); |
e87a52b3 ML |
238 | } |
239 | } | |
240 | ||
241 | conn_state->best_encoder = encoder; | |
242 | } | |
243 | ||
ec5aaa58 | 244 | static void |
623369e5 | 245 | steal_encoder(struct drm_atomic_state *state, |
ff19b786 | 246 | struct drm_encoder *encoder) |
623369e5 | 247 | { |
623369e5 DV |
248 | struct drm_crtc_state *crtc_state; |
249 | struct drm_connector *connector; | |
415c3ac3 | 250 | struct drm_connector_state *old_connector_state, *new_connector_state; |
ec5aaa58 | 251 | int i; |
623369e5 | 252 | |
415c3ac3 | 253 | for_each_oldnew_connector_in_state(state, connector, old_connector_state, new_connector_state, i) { |
ff19b786 | 254 | struct drm_crtc *encoder_crtc; |
623369e5 | 255 | |
415c3ac3 | 256 | if (new_connector_state->best_encoder != encoder) |
623369e5 DV |
257 | continue; |
258 | ||
415c3ac3 | 259 | encoder_crtc = old_connector_state->crtc; |
623369e5 | 260 | |
ff19b786 ML |
261 | DRM_DEBUG_ATOMIC("[ENCODER:%d:%s] in use on [CRTC:%d:%s], stealing it\n", |
262 | encoder->base.id, encoder->name, | |
263 | encoder_crtc->base.id, encoder_crtc->name); | |
e87a52b3 | 264 | |
415c3ac3 | 265 | set_best_encoder(state, new_connector_state, NULL); |
623369e5 | 266 | |
b4d93679 | 267 | crtc_state = drm_atomic_get_new_crtc_state(state, encoder_crtc); |
ff19b786 ML |
268 | crtc_state->connectors_changed = true; |
269 | ||
ec5aaa58 | 270 | return; |
623369e5 | 271 | } |
623369e5 DV |
272 | } |
273 | ||
274 | static int | |
9459545b ML |
275 | update_connector_routing(struct drm_atomic_state *state, |
276 | struct drm_connector *connector, | |
415c3ac3 ML |
277 | struct drm_connector_state *old_connector_state, |
278 | struct drm_connector_state *new_connector_state) | |
623369e5 | 279 | { |
b5ceff20 | 280 | const struct drm_connector_helper_funcs *funcs; |
623369e5 | 281 | struct drm_encoder *new_encoder; |
623369e5 | 282 | struct drm_crtc_state *crtc_state; |
623369e5 | 283 | |
17a38d9c DV |
284 | DRM_DEBUG_ATOMIC("Updating routing for [CONNECTOR:%d:%s]\n", |
285 | connector->base.id, | |
286 | connector->name); | |
623369e5 | 287 | |
415c3ac3 ML |
288 | if (old_connector_state->crtc != new_connector_state->crtc) { |
289 | if (old_connector_state->crtc) { | |
b4d93679 | 290 | crtc_state = drm_atomic_get_new_crtc_state(state, old_connector_state->crtc); |
fc596660 | 291 | crtc_state->connectors_changed = true; |
623369e5 DV |
292 | } |
293 | ||
415c3ac3 | 294 | if (new_connector_state->crtc) { |
b4d93679 | 295 | crtc_state = drm_atomic_get_new_crtc_state(state, new_connector_state->crtc); |
fc596660 | 296 | crtc_state->connectors_changed = true; |
623369e5 DV |
297 | } |
298 | } | |
299 | ||
415c3ac3 | 300 | if (!new_connector_state->crtc) { |
17a38d9c | 301 | DRM_DEBUG_ATOMIC("Disabling [CONNECTOR:%d:%s]\n", |
623369e5 DV |
302 | connector->base.id, |
303 | connector->name); | |
304 | ||
415c3ac3 | 305 | set_best_encoder(state, new_connector_state, NULL); |
623369e5 DV |
306 | |
307 | return 0; | |
308 | } | |
309 | ||
310 | funcs = connector->helper_private; | |
3b8a684b DV |
311 | |
312 | if (funcs->atomic_best_encoder) | |
313 | new_encoder = funcs->atomic_best_encoder(connector, | |
415c3ac3 | 314 | new_connector_state); |
c61b93fe | 315 | else if (funcs->best_encoder) |
3b8a684b | 316 | new_encoder = funcs->best_encoder(connector); |
c61b93fe BB |
317 | else |
318 | new_encoder = drm_atomic_helper_best_encoder(connector); | |
623369e5 DV |
319 | |
320 | if (!new_encoder) { | |
17a38d9c DV |
321 | DRM_DEBUG_ATOMIC("No suitable encoder found for [CONNECTOR:%d:%s]\n", |
322 | connector->base.id, | |
323 | connector->name); | |
623369e5 DV |
324 | return -EINVAL; |
325 | } | |
326 | ||
415c3ac3 | 327 | if (!drm_encoder_crtc_ok(new_encoder, new_connector_state->crtc)) { |
6ac7c548 | 328 | DRM_DEBUG_ATOMIC("[ENCODER:%d:%s] incompatible with [CRTC:%d:%s]\n", |
5481c8fb DV |
329 | new_encoder->base.id, |
330 | new_encoder->name, | |
415c3ac3 ML |
331 | new_connector_state->crtc->base.id, |
332 | new_connector_state->crtc->name); | |
5481c8fb DV |
333 | return -EINVAL; |
334 | } | |
335 | ||
415c3ac3 ML |
336 | if (new_encoder == new_connector_state->best_encoder) { |
337 | set_best_encoder(state, new_connector_state, new_encoder); | |
e87a52b3 | 338 | |
fa3ab4c2 | 339 | DRM_DEBUG_ATOMIC("[CONNECTOR:%d:%s] keeps [ENCODER:%d:%s], now on [CRTC:%d:%s]\n", |
17a38d9c DV |
340 | connector->base.id, |
341 | connector->name, | |
342 | new_encoder->base.id, | |
343 | new_encoder->name, | |
415c3ac3 ML |
344 | new_connector_state->crtc->base.id, |
345 | new_connector_state->crtc->name); | |
623369e5 DV |
346 | |
347 | return 0; | |
348 | } | |
349 | ||
ec5aaa58 | 350 | steal_encoder(state, new_encoder); |
6ea76f3c | 351 | |
415c3ac3 | 352 | set_best_encoder(state, new_connector_state, new_encoder); |
e87a52b3 | 353 | |
b4d93679 | 354 | crtc_state = drm_atomic_get_new_crtc_state(state, new_connector_state->crtc); |
fc596660 | 355 | crtc_state->connectors_changed = true; |
623369e5 | 356 | |
fa3ab4c2 | 357 | DRM_DEBUG_ATOMIC("[CONNECTOR:%d:%s] using [ENCODER:%d:%s] on [CRTC:%d:%s]\n", |
17a38d9c DV |
358 | connector->base.id, |
359 | connector->name, | |
360 | new_encoder->base.id, | |
361 | new_encoder->name, | |
415c3ac3 ML |
362 | new_connector_state->crtc->base.id, |
363 | new_connector_state->crtc->name); | |
623369e5 DV |
364 | |
365 | return 0; | |
366 | } | |
367 | ||
368 | static int | |
369 | mode_fixup(struct drm_atomic_state *state) | |
370 | { | |
df63b999 | 371 | struct drm_crtc *crtc; |
415c3ac3 | 372 | struct drm_crtc_state *new_crtc_state; |
df63b999 | 373 | struct drm_connector *connector; |
415c3ac3 | 374 | struct drm_connector_state *new_conn_state; |
623369e5 | 375 | int i; |
f9ad86e4 | 376 | int ret; |
623369e5 | 377 | |
415c3ac3 ML |
378 | for_each_new_crtc_in_state(state, crtc, new_crtc_state, i) { |
379 | if (!new_crtc_state->mode_changed && | |
380 | !new_crtc_state->connectors_changed) | |
623369e5 DV |
381 | continue; |
382 | ||
415c3ac3 | 383 | drm_mode_copy(&new_crtc_state->adjusted_mode, &new_crtc_state->mode); |
623369e5 DV |
384 | } |
385 | ||
415c3ac3 | 386 | for_each_new_connector_in_state(state, connector, new_conn_state, i) { |
b5ceff20 | 387 | const struct drm_encoder_helper_funcs *funcs; |
623369e5 DV |
388 | struct drm_encoder *encoder; |
389 | ||
415c3ac3 | 390 | WARN_ON(!!new_conn_state->best_encoder != !!new_conn_state->crtc); |
623369e5 | 391 | |
415c3ac3 | 392 | if (!new_conn_state->crtc || !new_conn_state->best_encoder) |
623369e5 DV |
393 | continue; |
394 | ||
415c3ac3 | 395 | new_crtc_state = |
b4d93679 | 396 | drm_atomic_get_new_crtc_state(state, new_conn_state->crtc); |
623369e5 DV |
397 | |
398 | /* | |
399 | * Each encoder has at most one connector (since we always steal | |
400 | * it away), so we won't call ->mode_fixup twice. | |
401 | */ | |
415c3ac3 | 402 | encoder = new_conn_state->best_encoder; |
623369e5 DV |
403 | funcs = encoder->helper_private; |
404 | ||
415c3ac3 ML |
405 | ret = drm_bridge_mode_fixup(encoder->bridge, &new_crtc_state->mode, |
406 | &new_crtc_state->adjusted_mode); | |
862e686c AT |
407 | if (!ret) { |
408 | DRM_DEBUG_ATOMIC("Bridge fixup failed\n"); | |
409 | return -EINVAL; | |
623369e5 DV |
410 | } |
411 | ||
2827635e | 412 | if (funcs && funcs->atomic_check) { |
415c3ac3 ML |
413 | ret = funcs->atomic_check(encoder, new_crtc_state, |
414 | new_conn_state); | |
4cd4df80 | 415 | if (ret) { |
17a38d9c DV |
416 | DRM_DEBUG_ATOMIC("[ENCODER:%d:%s] check failed\n", |
417 | encoder->base.id, encoder->name); | |
4cd4df80 TR |
418 | return ret; |
419 | } | |
2827635e | 420 | } else if (funcs && funcs->mode_fixup) { |
415c3ac3 ML |
421 | ret = funcs->mode_fixup(encoder, &new_crtc_state->mode, |
422 | &new_crtc_state->adjusted_mode); | |
4cd4df80 | 423 | if (!ret) { |
17a38d9c DV |
424 | DRM_DEBUG_ATOMIC("[ENCODER:%d:%s] fixup failed\n", |
425 | encoder->base.id, encoder->name); | |
4cd4df80 TR |
426 | return -EINVAL; |
427 | } | |
623369e5 DV |
428 | } |
429 | } | |
430 | ||
415c3ac3 | 431 | for_each_new_crtc_in_state(state, crtc, new_crtc_state, i) { |
b5ceff20 | 432 | const struct drm_crtc_helper_funcs *funcs; |
623369e5 | 433 | |
415c3ac3 | 434 | if (!new_crtc_state->enable) |
f55f1701 LY |
435 | continue; |
436 | ||
415c3ac3 ML |
437 | if (!new_crtc_state->mode_changed && |
438 | !new_crtc_state->connectors_changed) | |
623369e5 DV |
439 | continue; |
440 | ||
441 | funcs = crtc->helper_private; | |
840bfe95 ACO |
442 | if (!funcs->mode_fixup) |
443 | continue; | |
444 | ||
415c3ac3 ML |
445 | ret = funcs->mode_fixup(crtc, &new_crtc_state->mode, |
446 | &new_crtc_state->adjusted_mode); | |
623369e5 | 447 | if (!ret) { |
fa3ab4c2 VS |
448 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] fixup failed\n", |
449 | crtc->base.id, crtc->name); | |
623369e5 DV |
450 | return -EINVAL; |
451 | } | |
452 | } | |
453 | ||
454 | return 0; | |
455 | } | |
456 | ||
faf94a08 JA |
457 | static enum drm_mode_status mode_valid_path(struct drm_connector *connector, |
458 | struct drm_encoder *encoder, | |
459 | struct drm_crtc *crtc, | |
460 | struct drm_display_mode *mode) | |
461 | { | |
462 | enum drm_mode_status ret; | |
463 | ||
464 | ret = drm_encoder_mode_valid(encoder, mode); | |
465 | if (ret != MODE_OK) { | |
466 | DRM_DEBUG_ATOMIC("[ENCODER:%d:%s] mode_valid() failed\n", | |
467 | encoder->base.id, encoder->name); | |
468 | return ret; | |
469 | } | |
470 | ||
471 | ret = drm_bridge_mode_valid(encoder->bridge, mode); | |
472 | if (ret != MODE_OK) { | |
473 | DRM_DEBUG_ATOMIC("[BRIDGE] mode_valid() failed\n"); | |
474 | return ret; | |
475 | } | |
476 | ||
477 | ret = drm_crtc_mode_valid(crtc, mode); | |
478 | if (ret != MODE_OK) { | |
479 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] mode_valid() failed\n", | |
480 | crtc->base.id, crtc->name); | |
481 | return ret; | |
482 | } | |
483 | ||
484 | return ret; | |
485 | } | |
486 | ||
487 | static int | |
488 | mode_valid(struct drm_atomic_state *state) | |
489 | { | |
490 | struct drm_connector_state *conn_state; | |
491 | struct drm_connector *connector; | |
492 | int i; | |
493 | ||
494 | for_each_new_connector_in_state(state, connector, conn_state, i) { | |
495 | struct drm_encoder *encoder = conn_state->best_encoder; | |
496 | struct drm_crtc *crtc = conn_state->crtc; | |
497 | struct drm_crtc_state *crtc_state; | |
498 | enum drm_mode_status mode_status; | |
499 | struct drm_display_mode *mode; | |
500 | ||
501 | if (!crtc || !encoder) | |
502 | continue; | |
503 | ||
504 | crtc_state = drm_atomic_get_new_crtc_state(state, crtc); | |
505 | if (!crtc_state) | |
506 | continue; | |
507 | if (!crtc_state->mode_changed && !crtc_state->connectors_changed) | |
508 | continue; | |
509 | ||
510 | mode = &crtc_state->mode; | |
511 | ||
512 | mode_status = mode_valid_path(connector, encoder, crtc, mode); | |
513 | if (mode_status != MODE_OK) | |
514 | return -EINVAL; | |
515 | } | |
516 | ||
517 | return 0; | |
518 | } | |
519 | ||
d9b13620 | 520 | /** |
f98bd3ef | 521 | * drm_atomic_helper_check_modeset - validate state object for modeset changes |
d9b13620 DV |
522 | * @dev: DRM device |
523 | * @state: the driver state object | |
524 | * | |
525 | * Check the state object to see if the requested state is physically possible. | |
526 | * This does all the crtc and connector related computations for an atomic | |
ce09d766 ML |
527 | * update and adds any additional connectors needed for full modesets. It calls |
528 | * the various per-object callbacks in the follow order: | |
529 | * | |
530 | * 1. &drm_connector_helper_funcs.atomic_best_encoder for determining the new encoder. | |
531 | * 2. &drm_connector_helper_funcs.atomic_check to validate the connector state. | |
532 | * 3. If it's determined a modeset is needed then all connectors on the affected crtc | |
533 | * crtc are added and &drm_connector_helper_funcs.atomic_check is run on them. | |
faf94a08 JA |
534 | * 4. &drm_encoder_helper_funcs.mode_valid, &drm_bridge_funcs.mode_valid and |
535 | * &drm_crtc_helper_funcs.mode_valid are called on the affected components. | |
536 | * 5. &drm_bridge_funcs.mode_fixup is called on all encoder bridges. | |
537 | * 6. &drm_encoder_helper_funcs.atomic_check is called to validate any encoder state. | |
ce09d766 ML |
538 | * This function is only called when the encoder will be part of a configured crtc, |
539 | * it must not be used for implementing connector property validation. | |
540 | * If this function is NULL, &drm_atomic_encoder_helper_funcs.mode_fixup is called | |
541 | * instead. | |
faf94a08 | 542 | * 7. &drm_crtc_helper_funcs.mode_fixup is called last, to fix up the mode with crtc constraints. |
6806cdf9 DV |
543 | * |
544 | * &drm_crtc_state.mode_changed is set when the input mode is changed. | |
545 | * &drm_crtc_state.connectors_changed is set when a connector is added or | |
546 | * removed from the crtc. &drm_crtc_state.active_changed is set when | |
547 | * &drm_crtc_state.active changes, which is used for DPMS. | |
d807ed1c | 548 | * See also: drm_atomic_crtc_needs_modeset() |
d9b13620 DV |
549 | * |
550 | * IMPORTANT: | |
551 | * | |
6806cdf9 DV |
552 | * Drivers which set &drm_crtc_state.mode_changed (e.g. in their |
553 | * &drm_plane_helper_funcs.atomic_check hooks if a plane update can't be done | |
554 | * without a full modeset) _must_ call this function afterwards after that | |
555 | * change. It is permitted to call this function multiple times for the same | |
556 | * update, e.g. when the &drm_crtc_helper_funcs.atomic_check functions depend | |
557 | * upon the adjusted dotclock for fifo space allocation and watermark | |
558 | * computation. | |
d9b13620 | 559 | * |
c39032a8 | 560 | * RETURNS: |
d9b13620 DV |
561 | * Zero for success or -errno |
562 | */ | |
563 | int | |
934ce1c2 | 564 | drm_atomic_helper_check_modeset(struct drm_device *dev, |
623369e5 DV |
565 | struct drm_atomic_state *state) |
566 | { | |
623369e5 | 567 | struct drm_crtc *crtc; |
415c3ac3 | 568 | struct drm_crtc_state *old_crtc_state, *new_crtc_state; |
df63b999 | 569 | struct drm_connector *connector; |
415c3ac3 | 570 | struct drm_connector_state *old_connector_state, *new_connector_state; |
623369e5 | 571 | int i, ret; |
ce09d766 | 572 | unsigned connectors_mask = 0; |
623369e5 | 573 | |
415c3ac3 | 574 | for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) { |
970ece83 ML |
575 | bool has_connectors = |
576 | !!new_crtc_state->connector_mask; | |
577 | ||
869e188a DV |
578 | WARN_ON(!drm_modeset_is_locked(&crtc->mutex)); |
579 | ||
415c3ac3 | 580 | if (!drm_mode_equal(&old_crtc_state->mode, &new_crtc_state->mode)) { |
fa3ab4c2 VS |
581 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] mode changed\n", |
582 | crtc->base.id, crtc->name); | |
415c3ac3 | 583 | new_crtc_state->mode_changed = true; |
623369e5 DV |
584 | } |
585 | ||
415c3ac3 | 586 | if (old_crtc_state->enable != new_crtc_state->enable) { |
fa3ab4c2 VS |
587 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] enable changed\n", |
588 | crtc->base.id, crtc->name); | |
fc596660 ML |
589 | |
590 | /* | |
591 | * For clarity this assignment is done here, but | |
592 | * enable == 0 is only true when there are no | |
593 | * connectors and a NULL mode. | |
594 | * | |
595 | * The other way around is true as well. enable != 0 | |
596 | * iff connectors are attached and a mode is set. | |
597 | */ | |
415c3ac3 ML |
598 | new_crtc_state->mode_changed = true; |
599 | new_crtc_state->connectors_changed = true; | |
623369e5 | 600 | } |
24d6652c ML |
601 | |
602 | if (old_crtc_state->active != new_crtc_state->active) { | |
603 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] active changed\n", | |
604 | crtc->base.id, crtc->name); | |
605 | new_crtc_state->active_changed = true; | |
606 | } | |
970ece83 ML |
607 | |
608 | if (new_crtc_state->enable != has_connectors) { | |
609 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] enabled/connectors mismatch\n", | |
610 | crtc->base.id, crtc->name); | |
611 | ||
612 | return -EINVAL; | |
613 | } | |
623369e5 DV |
614 | } |
615 | ||
44596b8c | 616 | ret = handle_conflicting_encoders(state, false); |
8248b65d ML |
617 | if (ret) |
618 | return ret; | |
40616a26 | 619 | |
415c3ac3 | 620 | for_each_oldnew_connector_in_state(state, connector, old_connector_state, new_connector_state, i) { |
ce09d766 ML |
621 | const struct drm_connector_helper_funcs *funcs = connector->helper_private; |
622 | ||
869e188a DV |
623 | WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex)); |
624 | ||
623369e5 | 625 | /* |
d807ed1c BS |
626 | * This only sets crtc->connectors_changed for routing changes, |
627 | * drivers must set crtc->connectors_changed themselves when | |
628 | * connector properties need to be updated. | |
623369e5 | 629 | */ |
9459545b | 630 | ret = update_connector_routing(state, connector, |
415c3ac3 ML |
631 | old_connector_state, |
632 | new_connector_state); | |
623369e5 DV |
633 | if (ret) |
634 | return ret; | |
415c3ac3 | 635 | if (old_connector_state->crtc) { |
b4d93679 ML |
636 | new_crtc_state = drm_atomic_get_new_crtc_state(state, |
637 | old_connector_state->crtc); | |
415c3ac3 ML |
638 | if (old_connector_state->link_status != |
639 | new_connector_state->link_status) | |
640 | new_crtc_state->connectors_changed = true; | |
40ee6fbe | 641 | } |
ce09d766 ML |
642 | |
643 | if (funcs->atomic_check) | |
644 | ret = funcs->atomic_check(connector, new_connector_state); | |
645 | if (ret) | |
646 | return ret; | |
647 | ||
648 | connectors_mask += BIT(i); | |
623369e5 DV |
649 | } |
650 | ||
651 | /* | |
652 | * After all the routing has been prepared we need to add in any | |
653 | * connector which is itself unchanged, but who's crtc changes it's | |
654 | * configuration. This must be done before calling mode_fixup in case a | |
655 | * crtc only changed its mode but has the same set of connectors. | |
656 | */ | |
415c3ac3 | 657 | for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) { |
415c3ac3 | 658 | if (!drm_atomic_crtc_needs_modeset(new_crtc_state)) |
623369e5 DV |
659 | continue; |
660 | ||
fa3ab4c2 VS |
661 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] needs all connectors, enable: %c, active: %c\n", |
662 | crtc->base.id, crtc->name, | |
415c3ac3 ML |
663 | new_crtc_state->enable ? 'y' : 'n', |
664 | new_crtc_state->active ? 'y' : 'n'); | |
623369e5 DV |
665 | |
666 | ret = drm_atomic_add_affected_connectors(state, crtc); | |
667 | if (ret != 0) | |
668 | return ret; | |
669 | ||
57744aa7 ML |
670 | ret = drm_atomic_add_affected_planes(state, crtc); |
671 | if (ret != 0) | |
672 | return ret; | |
623369e5 DV |
673 | } |
674 | ||
ce09d766 ML |
675 | /* |
676 | * Iterate over all connectors again, to make sure atomic_check() | |
677 | * has been called on them when a modeset is forced. | |
678 | */ | |
679 | for_each_oldnew_connector_in_state(state, connector, old_connector_state, new_connector_state, i) { | |
680 | const struct drm_connector_helper_funcs *funcs = connector->helper_private; | |
681 | ||
682 | if (connectors_mask & BIT(i)) | |
683 | continue; | |
684 | ||
685 | if (funcs->atomic_check) | |
686 | ret = funcs->atomic_check(connector, new_connector_state); | |
687 | if (ret) | |
688 | return ret; | |
689 | } | |
690 | ||
faf94a08 JA |
691 | ret = mode_valid(state); |
692 | if (ret) | |
693 | return ret; | |
694 | ||
623369e5 DV |
695 | return mode_fixup(state); |
696 | } | |
d9b13620 | 697 | EXPORT_SYMBOL(drm_atomic_helper_check_modeset); |
623369e5 | 698 | |
a01cb8ba VS |
699 | /** |
700 | * drm_atomic_helper_check_plane_state() - Check plane state for validity | |
701 | * @plane_state: plane state to check | |
702 | * @crtc_state: crtc state to check | |
a01cb8ba VS |
703 | * @min_scale: minimum @src:@dest scaling factor in 16.16 fixed point |
704 | * @max_scale: maximum @src:@dest scaling factor in 16.16 fixed point | |
705 | * @can_position: is it legal to position the plane such that it | |
706 | * doesn't cover the entire crtc? This will generally | |
707 | * only be false for primary planes. | |
708 | * @can_update_disabled: can the plane be updated while the crtc | |
709 | * is disabled? | |
710 | * | |
711 | * Checks that a desired plane update is valid, and updates various | |
712 | * bits of derived state (clipped coordinates etc.). Drivers that provide | |
713 | * their own plane handling rather than helper-provided implementations may | |
714 | * still wish to call this function to avoid duplication of error checking | |
715 | * code. | |
716 | * | |
717 | * RETURNS: | |
718 | * Zero if update appears valid, error code on failure | |
719 | */ | |
720 | int drm_atomic_helper_check_plane_state(struct drm_plane_state *plane_state, | |
721 | const struct drm_crtc_state *crtc_state, | |
a01cb8ba VS |
722 | int min_scale, |
723 | int max_scale, | |
724 | bool can_position, | |
725 | bool can_update_disabled) | |
726 | { | |
727 | struct drm_framebuffer *fb = plane_state->fb; | |
728 | struct drm_rect *src = &plane_state->src; | |
729 | struct drm_rect *dst = &plane_state->dst; | |
730 | unsigned int rotation = plane_state->rotation; | |
81af63a4 | 731 | struct drm_rect clip = {}; |
a01cb8ba VS |
732 | int hscale, vscale; |
733 | ||
734 | WARN_ON(plane_state->crtc && plane_state->crtc != crtc_state->crtc); | |
735 | ||
736 | *src = drm_plane_state_src(plane_state); | |
737 | *dst = drm_plane_state_dest(plane_state); | |
738 | ||
739 | if (!fb) { | |
740 | plane_state->visible = false; | |
741 | return 0; | |
742 | } | |
743 | ||
744 | /* crtc should only be NULL when disabling (i.e., !fb) */ | |
745 | if (WARN_ON(!plane_state->crtc)) { | |
746 | plane_state->visible = false; | |
747 | return 0; | |
748 | } | |
749 | ||
750 | if (!crtc_state->enable && !can_update_disabled) { | |
751 | DRM_DEBUG_KMS("Cannot update plane of a disabled CRTC.\n"); | |
752 | return -EINVAL; | |
753 | } | |
754 | ||
755 | drm_rect_rotate(src, fb->width << 16, fb->height << 16, rotation); | |
756 | ||
757 | /* Check scaling */ | |
758 | hscale = drm_rect_calc_hscale(src, dst, min_scale, max_scale); | |
759 | vscale = drm_rect_calc_vscale(src, dst, min_scale, max_scale); | |
760 | if (hscale < 0 || vscale < 0) { | |
761 | DRM_DEBUG_KMS("Invalid scaling of plane\n"); | |
762 | drm_rect_debug_print("src: ", &plane_state->src, true); | |
763 | drm_rect_debug_print("dst: ", &plane_state->dst, false); | |
764 | return -ERANGE; | |
765 | } | |
766 | ||
81af63a4 VS |
767 | if (crtc_state->enable) |
768 | drm_mode_get_hv_timing(&crtc_state->mode, &clip.x2, &clip.y2); | |
769 | ||
f96bdf56 | 770 | plane_state->visible = drm_rect_clip_scaled(src, dst, &clip); |
a01cb8ba VS |
771 | |
772 | drm_rect_rotate_inv(src, fb->width << 16, fb->height << 16, rotation); | |
773 | ||
774 | if (!plane_state->visible) | |
775 | /* | |
776 | * Plane isn't visible; some drivers can handle this | |
777 | * so we just return success here. Drivers that can't | |
778 | * (including those that use the primary plane helper's | |
779 | * update function) will return an error from their | |
780 | * update_plane handler. | |
781 | */ | |
782 | return 0; | |
783 | ||
81af63a4 | 784 | if (!can_position && !drm_rect_equals(dst, &clip)) { |
a01cb8ba VS |
785 | DRM_DEBUG_KMS("Plane must cover entire CRTC\n"); |
786 | drm_rect_debug_print("dst: ", dst, false); | |
81af63a4 | 787 | drm_rect_debug_print("clip: ", &clip, false); |
a01cb8ba VS |
788 | return -EINVAL; |
789 | } | |
790 | ||
791 | return 0; | |
792 | } | |
793 | EXPORT_SYMBOL(drm_atomic_helper_check_plane_state); | |
794 | ||
c2fcd274 | 795 | /** |
f98bd3ef | 796 | * drm_atomic_helper_check_planes - validate state object for planes changes |
c2fcd274 DV |
797 | * @dev: DRM device |
798 | * @state: the driver state object | |
799 | * | |
800 | * Check the state object to see if the requested state is physically possible. | |
d9b13620 | 801 | * This does all the plane update related checks using by calling into the |
6806cdf9 DV |
802 | * &drm_crtc_helper_funcs.atomic_check and &drm_plane_helper_funcs.atomic_check |
803 | * hooks provided by the driver. | |
c2fcd274 | 804 | * |
6806cdf9 | 805 | * It also sets &drm_crtc_state.planes_changed to indicate that a crtc has |
fc596660 ML |
806 | * updated planes. |
807 | * | |
c39032a8 | 808 | * RETURNS: |
c2fcd274 DV |
809 | * Zero for success or -errno |
810 | */ | |
d9b13620 DV |
811 | int |
812 | drm_atomic_helper_check_planes(struct drm_device *dev, | |
813 | struct drm_atomic_state *state) | |
c2fcd274 | 814 | { |
df63b999 | 815 | struct drm_crtc *crtc; |
415c3ac3 | 816 | struct drm_crtc_state *new_crtc_state; |
df63b999 | 817 | struct drm_plane *plane; |
415c3ac3 | 818 | struct drm_plane_state *new_plane_state, *old_plane_state; |
c2fcd274 DV |
819 | int i, ret = 0; |
820 | ||
415c3ac3 | 821 | for_each_oldnew_plane_in_state(state, plane, old_plane_state, new_plane_state, i) { |
b5ceff20 | 822 | const struct drm_plane_helper_funcs *funcs; |
c2fcd274 | 823 | |
869e188a DV |
824 | WARN_ON(!drm_modeset_is_locked(&plane->mutex)); |
825 | ||
c2fcd274 DV |
826 | funcs = plane->helper_private; |
827 | ||
415c3ac3 | 828 | drm_atomic_helper_plane_changed(state, old_plane_state, new_plane_state, plane); |
c2fcd274 DV |
829 | |
830 | if (!funcs || !funcs->atomic_check) | |
831 | continue; | |
832 | ||
415c3ac3 | 833 | ret = funcs->atomic_check(plane, new_plane_state); |
c2fcd274 | 834 | if (ret) { |
9f4c97a2 VS |
835 | DRM_DEBUG_ATOMIC("[PLANE:%d:%s] atomic driver check failed\n", |
836 | plane->base.id, plane->name); | |
c2fcd274 DV |
837 | return ret; |
838 | } | |
839 | } | |
840 | ||
415c3ac3 | 841 | for_each_new_crtc_in_state(state, crtc, new_crtc_state, i) { |
b5ceff20 | 842 | const struct drm_crtc_helper_funcs *funcs; |
c2fcd274 DV |
843 | |
844 | funcs = crtc->helper_private; | |
845 | ||
846 | if (!funcs || !funcs->atomic_check) | |
847 | continue; | |
848 | ||
415c3ac3 | 849 | ret = funcs->atomic_check(crtc, new_crtc_state); |
c2fcd274 | 850 | if (ret) { |
fa3ab4c2 VS |
851 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] atomic driver check failed\n", |
852 | crtc->base.id, crtc->name); | |
c2fcd274 DV |
853 | return ret; |
854 | } | |
855 | } | |
856 | ||
d9b13620 DV |
857 | return ret; |
858 | } | |
859 | EXPORT_SYMBOL(drm_atomic_helper_check_planes); | |
860 | ||
861 | /** | |
862 | * drm_atomic_helper_check - validate state object | |
863 | * @dev: DRM device | |
864 | * @state: the driver state object | |
865 | * | |
866 | * Check the state object to see if the requested state is physically possible. | |
867 | * Only crtcs and planes have check callbacks, so for any additional (global) | |
868 | * checking that a driver needs it can simply wrap that around this function. | |
6806cdf9 DV |
869 | * Drivers without such needs can directly use this as their |
870 | * &drm_mode_config_funcs.atomic_check callback. | |
d9b13620 | 871 | * |
b4274fbe DV |
872 | * This just wraps the two parts of the state checking for planes and modeset |
873 | * state in the default order: First it calls drm_atomic_helper_check_modeset() | |
874 | * and then drm_atomic_helper_check_planes(). The assumption is that the | |
6806cdf9 DV |
875 | * @drm_plane_helper_funcs.atomic_check and @drm_crtc_helper_funcs.atomic_check |
876 | * functions depend upon an updated adjusted_mode.clock to e.g. properly compute | |
877 | * watermarks. | |
b4274fbe | 878 | * |
49efffc7 PU |
879 | * Note that zpos normalization will add all enable planes to the state which |
880 | * might not desired for some drivers. | |
881 | * For example enable/disable of a cursor plane which have fixed zpos value | |
882 | * would trigger all other enabled planes to be forced to the state change. | |
883 | * | |
c39032a8 | 884 | * RETURNS: |
d9b13620 DV |
885 | * Zero for success or -errno |
886 | */ | |
887 | int drm_atomic_helper_check(struct drm_device *dev, | |
888 | struct drm_atomic_state *state) | |
889 | { | |
890 | int ret; | |
891 | ||
b4274fbe | 892 | ret = drm_atomic_helper_check_modeset(dev, state); |
d9b13620 DV |
893 | if (ret) |
894 | return ret; | |
895 | ||
49efffc7 PU |
896 | if (dev->mode_config.normalize_zpos) { |
897 | ret = drm_atomic_normalize_zpos(dev, state); | |
898 | if (ret) | |
899 | return ret; | |
900 | } | |
901 | ||
b4274fbe | 902 | ret = drm_atomic_helper_check_planes(dev, state); |
934ce1c2 RC |
903 | if (ret) |
904 | return ret; | |
905 | ||
fef9df8b GP |
906 | if (state->legacy_cursor_update) |
907 | state->async_update = !drm_atomic_helper_async_check(dev, state); | |
908 | ||
c2fcd274 DV |
909 | return ret; |
910 | } | |
911 | EXPORT_SYMBOL(drm_atomic_helper_check); | |
912 | ||
623369e5 DV |
913 | static void |
914 | disable_outputs(struct drm_device *dev, struct drm_atomic_state *old_state) | |
915 | { | |
df63b999 | 916 | struct drm_connector *connector; |
415c3ac3 | 917 | struct drm_connector_state *old_conn_state, *new_conn_state; |
df63b999 | 918 | struct drm_crtc *crtc; |
415c3ac3 | 919 | struct drm_crtc_state *old_crtc_state, *new_crtc_state; |
623369e5 DV |
920 | int i; |
921 | ||
415c3ac3 | 922 | for_each_oldnew_connector_in_state(old_state, connector, old_conn_state, new_conn_state, i) { |
b5ceff20 | 923 | const struct drm_encoder_helper_funcs *funcs; |
623369e5 DV |
924 | struct drm_encoder *encoder; |
925 | ||
623369e5 DV |
926 | /* Shut down everything that's in the changeset and currently |
927 | * still on. So need to check the old, saved state. */ | |
df63b999 | 928 | if (!old_conn_state->crtc) |
623369e5 DV |
929 | continue; |
930 | ||
b4d93679 | 931 | old_crtc_state = drm_atomic_get_old_crtc_state(old_state, old_conn_state->crtc); |
eab3bbef | 932 | |
4218a32f | 933 | if (!old_crtc_state->active || |
2465ff62 | 934 | !drm_atomic_crtc_needs_modeset(old_conn_state->crtc->state)) |
eab3bbef DV |
935 | continue; |
936 | ||
46df9adb | 937 | encoder = old_conn_state->best_encoder; |
623369e5 | 938 | |
46df9adb RC |
939 | /* We shouldn't get this far if we didn't previously have |
940 | * an encoder.. but WARN_ON() rather than explode. | |
941 | */ | |
942 | if (WARN_ON(!encoder)) | |
623369e5 DV |
943 | continue; |
944 | ||
945 | funcs = encoder->helper_private; | |
946 | ||
17a38d9c DV |
947 | DRM_DEBUG_ATOMIC("disabling [ENCODER:%d:%s]\n", |
948 | encoder->base.id, encoder->name); | |
95d6eb3b | 949 | |
623369e5 DV |
950 | /* |
951 | * Each encoder has at most one connector (since we always steal | |
f98bd3ef | 952 | * it away), so we won't call disable hooks twice. |
623369e5 | 953 | */ |
862e686c | 954 | drm_bridge_disable(encoder->bridge); |
623369e5 DV |
955 | |
956 | /* Right function depends upon target state. */ | |
2827635e | 957 | if (funcs) { |
415c3ac3 | 958 | if (new_conn_state->crtc && funcs->prepare) |
2827635e NT |
959 | funcs->prepare(encoder); |
960 | else if (funcs->disable) | |
961 | funcs->disable(encoder); | |
962 | else if (funcs->dpms) | |
963 | funcs->dpms(encoder, DRM_MODE_DPMS_OFF); | |
964 | } | |
623369e5 | 965 | |
862e686c | 966 | drm_bridge_post_disable(encoder->bridge); |
623369e5 DV |
967 | } |
968 | ||
415c3ac3 | 969 | for_each_oldnew_crtc_in_state(old_state, crtc, old_crtc_state, new_crtc_state, i) { |
b5ceff20 | 970 | const struct drm_crtc_helper_funcs *funcs; |
84014b0a | 971 | int ret; |
623369e5 DV |
972 | |
973 | /* Shut down everything that needs a full modeset. */ | |
415c3ac3 | 974 | if (!drm_atomic_crtc_needs_modeset(new_crtc_state)) |
eab3bbef DV |
975 | continue; |
976 | ||
977 | if (!old_crtc_state->active) | |
623369e5 DV |
978 | continue; |
979 | ||
980 | funcs = crtc->helper_private; | |
981 | ||
fa3ab4c2 VS |
982 | DRM_DEBUG_ATOMIC("disabling [CRTC:%d:%s]\n", |
983 | crtc->base.id, crtc->name); | |
95d6eb3b DV |
984 | |
985 | ||
623369e5 | 986 | /* Right function depends upon target state. */ |
415c3ac3 | 987 | if (new_crtc_state->enable && funcs->prepare) |
623369e5 | 988 | funcs->prepare(crtc); |
c9ac8b4c LY |
989 | else if (funcs->atomic_disable) |
990 | funcs->atomic_disable(crtc, old_crtc_state); | |
623369e5 DV |
991 | else if (funcs->disable) |
992 | funcs->disable(crtc); | |
993 | else | |
994 | funcs->dpms(crtc, DRM_MODE_DPMS_OFF); | |
84014b0a DV |
995 | |
996 | if (!(dev->irq_enabled && dev->num_crtcs)) | |
997 | continue; | |
998 | ||
999 | ret = drm_crtc_vblank_get(crtc); | |
1000 | WARN_ONCE(ret != -EINVAL, "driver forgot to call drm_crtc_vblank_off()\n"); | |
1001 | if (ret == 0) | |
1002 | drm_crtc_vblank_put(crtc); | |
623369e5 DV |
1003 | } |
1004 | } | |
1005 | ||
4c18d301 DV |
1006 | /** |
1007 | * drm_atomic_helper_update_legacy_modeset_state - update legacy modeset state | |
1008 | * @dev: DRM device | |
1009 | * @old_state: atomic state object with old state structures | |
1010 | * | |
1011 | * This function updates all the various legacy modeset state pointers in | |
1012 | * connectors, encoders and crtcs. It also updates the timestamping constants | |
1013 | * used for precise vblank timestamps by calling | |
1014 | * drm_calc_timestamping_constants(). | |
1015 | * | |
1016 | * Drivers can use this for building their own atomic commit if they don't have | |
1017 | * a pure helper-based modeset implementation. | |
2e2b96ef DV |
1018 | * |
1019 | * Since these updates are not synchronized with lockings, only code paths | |
1020 | * called from &drm_mode_config_helper_funcs.atomic_commit_tail can look at the | |
1021 | * legacy state filled out by this helper. Defacto this means this helper and | |
1022 | * the legacy state pointers are only really useful for transitioning an | |
1023 | * existing driver to the atomic world. | |
4c18d301 DV |
1024 | */ |
1025 | void | |
1026 | drm_atomic_helper_update_legacy_modeset_state(struct drm_device *dev, | |
1027 | struct drm_atomic_state *old_state) | |
623369e5 | 1028 | { |
df63b999 | 1029 | struct drm_connector *connector; |
415c3ac3 | 1030 | struct drm_connector_state *old_conn_state, *new_conn_state; |
df63b999 | 1031 | struct drm_crtc *crtc; |
415c3ac3 | 1032 | struct drm_crtc_state *new_crtc_state; |
623369e5 DV |
1033 | int i; |
1034 | ||
8c10342c | 1035 | /* clear out existing links and update dpms */ |
415c3ac3 | 1036 | for_each_oldnew_connector_in_state(old_state, connector, old_conn_state, new_conn_state, i) { |
8c10342c ML |
1037 | if (connector->encoder) { |
1038 | WARN_ON(!connector->encoder->crtc); | |
1039 | ||
1040 | connector->encoder->crtc = NULL; | |
1041 | connector->encoder = NULL; | |
1042 | } | |
623369e5 | 1043 | |
415c3ac3 | 1044 | crtc = new_conn_state->crtc; |
8c10342c ML |
1045 | if ((!crtc && old_conn_state->crtc) || |
1046 | (crtc && drm_atomic_crtc_needs_modeset(crtc->state))) { | |
8c10342c | 1047 | int mode = DRM_MODE_DPMS_OFF; |
623369e5 | 1048 | |
8c10342c ML |
1049 | if (crtc && crtc->state->active) |
1050 | mode = DRM_MODE_DPMS_ON; | |
1051 | ||
1052 | connector->dpms = mode; | |
8c10342c | 1053 | } |
623369e5 DV |
1054 | } |
1055 | ||
1056 | /* set new links */ | |
415c3ac3 ML |
1057 | for_each_new_connector_in_state(old_state, connector, new_conn_state, i) { |
1058 | if (!new_conn_state->crtc) | |
623369e5 DV |
1059 | continue; |
1060 | ||
415c3ac3 | 1061 | if (WARN_ON(!new_conn_state->best_encoder)) |
623369e5 DV |
1062 | continue; |
1063 | ||
415c3ac3 ML |
1064 | connector->encoder = new_conn_state->best_encoder; |
1065 | connector->encoder->crtc = new_conn_state->crtc; | |
623369e5 DV |
1066 | } |
1067 | ||
1068 | /* set legacy state in the crtc structure */ | |
415c3ac3 | 1069 | for_each_new_crtc_in_state(old_state, crtc, new_crtc_state, i) { |
2660801f | 1070 | struct drm_plane *primary = crtc->primary; |
b4d93679 | 1071 | struct drm_plane_state *new_plane_state; |
2660801f | 1072 | |
415c3ac3 ML |
1073 | crtc->mode = new_crtc_state->mode; |
1074 | crtc->enabled = new_crtc_state->enable; | |
2660801f | 1075 | |
b4d93679 ML |
1076 | new_plane_state = |
1077 | drm_atomic_get_new_plane_state(old_state, primary); | |
1078 | ||
1079 | if (new_plane_state && new_plane_state->crtc == crtc) { | |
1080 | crtc->x = new_plane_state->src_x >> 16; | |
1081 | crtc->y = new_plane_state->src_y >> 16; | |
2660801f | 1082 | } |
3d51d2d2 | 1083 | |
415c3ac3 | 1084 | if (new_crtc_state->enable) |
3d51d2d2 | 1085 | drm_calc_timestamping_constants(crtc, |
415c3ac3 | 1086 | &new_crtc_state->adjusted_mode); |
623369e5 DV |
1087 | } |
1088 | } | |
4c18d301 | 1089 | EXPORT_SYMBOL(drm_atomic_helper_update_legacy_modeset_state); |
623369e5 DV |
1090 | |
1091 | static void | |
1092 | crtc_set_mode(struct drm_device *dev, struct drm_atomic_state *old_state) | |
1093 | { | |
df63b999 | 1094 | struct drm_crtc *crtc; |
415c3ac3 | 1095 | struct drm_crtc_state *new_crtc_state; |
df63b999 | 1096 | struct drm_connector *connector; |
415c3ac3 | 1097 | struct drm_connector_state *new_conn_state; |
623369e5 DV |
1098 | int i; |
1099 | ||
415c3ac3 | 1100 | for_each_new_crtc_in_state(old_state, crtc, new_crtc_state, i) { |
b5ceff20 | 1101 | const struct drm_crtc_helper_funcs *funcs; |
623369e5 | 1102 | |
415c3ac3 | 1103 | if (!new_crtc_state->mode_changed) |
623369e5 DV |
1104 | continue; |
1105 | ||
1106 | funcs = crtc->helper_private; | |
1107 | ||
415c3ac3 | 1108 | if (new_crtc_state->enable && funcs->mode_set_nofb) { |
fa3ab4c2 VS |
1109 | DRM_DEBUG_ATOMIC("modeset on [CRTC:%d:%s]\n", |
1110 | crtc->base.id, crtc->name); | |
95d6eb3b | 1111 | |
623369e5 | 1112 | funcs->mode_set_nofb(crtc); |
95d6eb3b | 1113 | } |
623369e5 DV |
1114 | } |
1115 | ||
415c3ac3 | 1116 | for_each_new_connector_in_state(old_state, connector, new_conn_state, i) { |
b5ceff20 | 1117 | const struct drm_encoder_helper_funcs *funcs; |
623369e5 DV |
1118 | struct drm_encoder *encoder; |
1119 | struct drm_display_mode *mode, *adjusted_mode; | |
1120 | ||
415c3ac3 | 1121 | if (!new_conn_state->best_encoder) |
623369e5 DV |
1122 | continue; |
1123 | ||
415c3ac3 | 1124 | encoder = new_conn_state->best_encoder; |
623369e5 | 1125 | funcs = encoder->helper_private; |
415c3ac3 | 1126 | new_crtc_state = new_conn_state->crtc->state; |
623369e5 DV |
1127 | mode = &new_crtc_state->mode; |
1128 | adjusted_mode = &new_crtc_state->adjusted_mode; | |
1129 | ||
eab3bbef DV |
1130 | if (!new_crtc_state->mode_changed) |
1131 | continue; | |
1132 | ||
17a38d9c DV |
1133 | DRM_DEBUG_ATOMIC("modeset on [ENCODER:%d:%s]\n", |
1134 | encoder->base.id, encoder->name); | |
95d6eb3b | 1135 | |
623369e5 DV |
1136 | /* |
1137 | * Each encoder has at most one connector (since we always steal | |
f98bd3ef | 1138 | * it away), so we won't call mode_set hooks twice. |
623369e5 | 1139 | */ |
fe4a11c9 PZ |
1140 | if (funcs && funcs->atomic_mode_set) { |
1141 | funcs->atomic_mode_set(encoder, new_crtc_state, | |
415c3ac3 | 1142 | new_conn_state); |
fe4a11c9 | 1143 | } else if (funcs && funcs->mode_set) { |
c982bd90 | 1144 | funcs->mode_set(encoder, mode, adjusted_mode); |
fe4a11c9 | 1145 | } |
623369e5 | 1146 | |
862e686c | 1147 | drm_bridge_mode_set(encoder->bridge, mode, adjusted_mode); |
623369e5 DV |
1148 | } |
1149 | } | |
1150 | ||
1151 | /** | |
1af434a9 | 1152 | * drm_atomic_helper_commit_modeset_disables - modeset commit to disable outputs |
623369e5 | 1153 | * @dev: DRM device |
a072f809 | 1154 | * @old_state: atomic state object with old state structures |
623369e5 | 1155 | * |
1af434a9 | 1156 | * This function shuts down all the outputs that need to be shut down and |
623369e5 | 1157 | * prepares them (if required) with the new mode. |
1af434a9 | 1158 | * |
60acc4eb | 1159 | * For compatibility with legacy crtc helpers this should be called before |
1af434a9 DV |
1160 | * drm_atomic_helper_commit_planes(), which is what the default commit function |
1161 | * does. But drivers with different needs can group the modeset commits together | |
1162 | * and do the plane commits at the end. This is useful for drivers doing runtime | |
1163 | * PM since planes updates then only happen when the CRTC is actually enabled. | |
623369e5 | 1164 | */ |
1af434a9 DV |
1165 | void drm_atomic_helper_commit_modeset_disables(struct drm_device *dev, |
1166 | struct drm_atomic_state *old_state) | |
623369e5 | 1167 | { |
a072f809 | 1168 | disable_outputs(dev, old_state); |
4c18d301 DV |
1169 | |
1170 | drm_atomic_helper_update_legacy_modeset_state(dev, old_state); | |
1171 | ||
a072f809 | 1172 | crtc_set_mode(dev, old_state); |
623369e5 | 1173 | } |
1af434a9 | 1174 | EXPORT_SYMBOL(drm_atomic_helper_commit_modeset_disables); |
623369e5 | 1175 | |
935774cd BS |
1176 | static void drm_atomic_helper_commit_writebacks(struct drm_device *dev, |
1177 | struct drm_atomic_state *old_state) | |
1178 | { | |
1179 | struct drm_connector *connector; | |
1180 | struct drm_connector_state *new_conn_state; | |
1181 | int i; | |
1182 | ||
1183 | for_each_new_connector_in_state(old_state, connector, new_conn_state, i) { | |
1184 | const struct drm_connector_helper_funcs *funcs; | |
1185 | ||
1186 | funcs = connector->helper_private; | |
1187 | ||
1188 | if (new_conn_state->writeback_job && new_conn_state->writeback_job->fb) { | |
1189 | WARN_ON(connector->connector_type != DRM_MODE_CONNECTOR_WRITEBACK); | |
1190 | funcs->atomic_commit(connector, new_conn_state->writeback_job); | |
1191 | } | |
1192 | } | |
1193 | } | |
1194 | ||
623369e5 | 1195 | /** |
1af434a9 | 1196 | * drm_atomic_helper_commit_modeset_enables - modeset commit to enable outputs |
623369e5 DV |
1197 | * @dev: DRM device |
1198 | * @old_state: atomic state object with old state structures | |
1199 | * | |
1af434a9 DV |
1200 | * This function enables all the outputs with the new configuration which had to |
1201 | * be turned off for the update. | |
1202 | * | |
60acc4eb | 1203 | * For compatibility with legacy crtc helpers this should be called after |
1af434a9 DV |
1204 | * drm_atomic_helper_commit_planes(), which is what the default commit function |
1205 | * does. But drivers with different needs can group the modeset commits together | |
1206 | * and do the plane commits at the end. This is useful for drivers doing runtime | |
1207 | * PM since planes updates then only happen when the CRTC is actually enabled. | |
623369e5 | 1208 | */ |
1af434a9 DV |
1209 | void drm_atomic_helper_commit_modeset_enables(struct drm_device *dev, |
1210 | struct drm_atomic_state *old_state) | |
623369e5 | 1211 | { |
df63b999 | 1212 | struct drm_crtc *crtc; |
0b20a0f8 | 1213 | struct drm_crtc_state *old_crtc_state; |
415c3ac3 | 1214 | struct drm_crtc_state *new_crtc_state; |
df63b999 | 1215 | struct drm_connector *connector; |
415c3ac3 | 1216 | struct drm_connector_state *new_conn_state; |
623369e5 DV |
1217 | int i; |
1218 | ||
0b20a0f8 | 1219 | for_each_oldnew_crtc_in_state(old_state, crtc, old_crtc_state, new_crtc_state, i) { |
b5ceff20 | 1220 | const struct drm_crtc_helper_funcs *funcs; |
623369e5 DV |
1221 | |
1222 | /* Need to filter out CRTCs where only planes change. */ | |
415c3ac3 | 1223 | if (!drm_atomic_crtc_needs_modeset(new_crtc_state)) |
eab3bbef DV |
1224 | continue; |
1225 | ||
415c3ac3 | 1226 | if (!new_crtc_state->active) |
623369e5 DV |
1227 | continue; |
1228 | ||
1229 | funcs = crtc->helper_private; | |
1230 | ||
415c3ac3 | 1231 | if (new_crtc_state->enable) { |
fa3ab4c2 VS |
1232 | DRM_DEBUG_ATOMIC("enabling [CRTC:%d:%s]\n", |
1233 | crtc->base.id, crtc->name); | |
95d6eb3b | 1234 | |
0b20a0f8 LP |
1235 | if (funcs->atomic_enable) |
1236 | funcs->atomic_enable(crtc, old_crtc_state); | |
ee0a89cf DV |
1237 | else |
1238 | funcs->commit(crtc); | |
1239 | } | |
623369e5 DV |
1240 | } |
1241 | ||
415c3ac3 | 1242 | for_each_new_connector_in_state(old_state, connector, new_conn_state, i) { |
b5ceff20 | 1243 | const struct drm_encoder_helper_funcs *funcs; |
623369e5 DV |
1244 | struct drm_encoder *encoder; |
1245 | ||
415c3ac3 | 1246 | if (!new_conn_state->best_encoder) |
623369e5 DV |
1247 | continue; |
1248 | ||
415c3ac3 ML |
1249 | if (!new_conn_state->crtc->state->active || |
1250 | !drm_atomic_crtc_needs_modeset(new_conn_state->crtc->state)) | |
eab3bbef DV |
1251 | continue; |
1252 | ||
415c3ac3 | 1253 | encoder = new_conn_state->best_encoder; |
623369e5 DV |
1254 | funcs = encoder->helper_private; |
1255 | ||
17a38d9c DV |
1256 | DRM_DEBUG_ATOMIC("enabling [ENCODER:%d:%s]\n", |
1257 | encoder->base.id, encoder->name); | |
95d6eb3b | 1258 | |
623369e5 DV |
1259 | /* |
1260 | * Each encoder has at most one connector (since we always steal | |
f98bd3ef | 1261 | * it away), so we won't call enable hooks twice. |
623369e5 | 1262 | */ |
862e686c | 1263 | drm_bridge_pre_enable(encoder->bridge); |
623369e5 | 1264 | |
2827635e NT |
1265 | if (funcs) { |
1266 | if (funcs->enable) | |
1267 | funcs->enable(encoder); | |
1268 | else if (funcs->commit) | |
1269 | funcs->commit(encoder); | |
1270 | } | |
623369e5 | 1271 | |
862e686c | 1272 | drm_bridge_enable(encoder->bridge); |
623369e5 | 1273 | } |
935774cd BS |
1274 | |
1275 | drm_atomic_helper_commit_writebacks(dev, old_state); | |
623369e5 | 1276 | } |
1af434a9 | 1277 | EXPORT_SYMBOL(drm_atomic_helper_commit_modeset_enables); |
623369e5 | 1278 | |
4c5b7f3a RC |
1279 | /** |
1280 | * drm_atomic_helper_wait_for_fences - wait for fences stashed in plane state | |
1281 | * @dev: DRM device | |
1282 | * @state: atomic state object with old state structures | |
1ea0c02e DV |
1283 | * @pre_swap: If true, do an interruptible wait, and @state is the new state. |
1284 | * Otherwise @state is the old state. | |
4c5b7f3a RC |
1285 | * |
1286 | * For implicit sync, driver should fish the exclusive fence out from the | |
1287 | * incoming fb's and stash it in the drm_plane_state. This is called after | |
1288 | * drm_atomic_helper_swap_state() so it uses the current plane state (and | |
1289 | * just uses the atomic state to find the changed planes) | |
f6ce410a | 1290 | * |
1ea0c02e DV |
1291 | * Note that @pre_swap is needed since the point where we block for fences moves |
1292 | * around depending upon whether an atomic commit is blocking or | |
42590372 GP |
1293 | * non-blocking. For non-blocking commit all waiting needs to happen after |
1294 | * drm_atomic_helper_swap_state() is called, but for blocking commits we want | |
1ea0c02e DV |
1295 | * to wait **before** we do anything that can't be easily rolled back. That is |
1296 | * before we call drm_atomic_helper_swap_state(). | |
1297 | * | |
f54d1867 | 1298 | * Returns zero if success or < 0 if dma_fence_wait() fails. |
4c5b7f3a | 1299 | */ |
f6ce410a GP |
1300 | int drm_atomic_helper_wait_for_fences(struct drm_device *dev, |
1301 | struct drm_atomic_state *state, | |
1302 | bool pre_swap) | |
e2330f07 | 1303 | { |
df63b999 | 1304 | struct drm_plane *plane; |
415c3ac3 | 1305 | struct drm_plane_state *new_plane_state; |
f6ce410a | 1306 | int i, ret; |
e2330f07 | 1307 | |
415c3ac3 ML |
1308 | for_each_new_plane_in_state(state, plane, new_plane_state, i) { |
1309 | if (!new_plane_state->fence) | |
e2330f07 DV |
1310 | continue; |
1311 | ||
415c3ac3 | 1312 | WARN_ON(!new_plane_state->fb); |
f6ce410a GP |
1313 | |
1314 | /* | |
1315 | * If waiting for fences pre-swap (ie: nonblock), userspace can | |
1316 | * still interrupt the operation. Instead of blocking until the | |
1317 | * timer expires, make the wait interruptible. | |
1318 | */ | |
415c3ac3 | 1319 | ret = dma_fence_wait(new_plane_state->fence, pre_swap); |
f6ce410a GP |
1320 | if (ret) |
1321 | return ret; | |
e2330f07 | 1322 | |
415c3ac3 ML |
1323 | dma_fence_put(new_plane_state->fence); |
1324 | new_plane_state->fence = NULL; | |
e2330f07 | 1325 | } |
f6ce410a GP |
1326 | |
1327 | return 0; | |
e2330f07 | 1328 | } |
4c5b7f3a | 1329 | EXPORT_SYMBOL(drm_atomic_helper_wait_for_fences); |
e2330f07 | 1330 | |
5ee3229c RC |
1331 | /** |
1332 | * drm_atomic_helper_wait_for_vblanks - wait for vblank on crtcs | |
1333 | * @dev: DRM device | |
1334 | * @old_state: atomic state object with old state structures | |
1335 | * | |
1336 | * Helper to, after atomic commit, wait for vblanks on all effected | |
1337 | * crtcs (ie. before cleaning up old framebuffers using | |
01086487 | 1338 | * drm_atomic_helper_cleanup_planes()). It will only wait on CRTCs where the |
ab58e338 DV |
1339 | * framebuffers have actually changed to optimize for the legacy cursor and |
1340 | * plane update use-case. | |
01086487 BB |
1341 | * |
1342 | * Drivers using the nonblocking commit tracking support initialized by calling | |
1343 | * drm_atomic_helper_setup_commit() should look at | |
1344 | * drm_atomic_helper_wait_for_flip_done() as an alternative. | |
5ee3229c RC |
1345 | */ |
1346 | void | |
1347 | drm_atomic_helper_wait_for_vblanks(struct drm_device *dev, | |
1348 | struct drm_atomic_state *old_state) | |
623369e5 DV |
1349 | { |
1350 | struct drm_crtc *crtc; | |
415c3ac3 | 1351 | struct drm_crtc_state *old_crtc_state, *new_crtc_state; |
623369e5 | 1352 | int i, ret; |
bdc57146 | 1353 | unsigned crtc_mask = 0; |
623369e5 | 1354 | |
bdc57146 ML |
1355 | /* |
1356 | * Legacy cursor ioctls are completely unsynced, and userspace | |
1357 | * relies on that (by doing tons of cursor updates). | |
1358 | */ | |
1359 | if (old_state->legacy_cursor_update) | |
1360 | return; | |
623369e5 | 1361 | |
415c3ac3 | 1362 | for_each_oldnew_crtc_in_state(old_state, crtc, old_crtc_state, new_crtc_state, i) { |
a76dfe35 | 1363 | if (!new_crtc_state->active) |
ab58e338 DV |
1364 | continue; |
1365 | ||
623369e5 DV |
1366 | ret = drm_crtc_vblank_get(crtc); |
1367 | if (ret != 0) | |
1368 | continue; | |
1369 | ||
bdc57146 ML |
1370 | crtc_mask |= drm_crtc_mask(crtc); |
1371 | old_state->crtcs[i].last_vblank_count = drm_crtc_vblank_count(crtc); | |
623369e5 DV |
1372 | } |
1373 | ||
415c3ac3 | 1374 | for_each_old_crtc_in_state(old_state, crtc, old_crtc_state, i) { |
bdc57146 | 1375 | if (!(crtc_mask & drm_crtc_mask(crtc))) |
623369e5 DV |
1376 | continue; |
1377 | ||
1378 | ret = wait_event_timeout(dev->vblank[i].queue, | |
bdc57146 | 1379 | old_state->crtcs[i].last_vblank_count != |
d4853630 | 1380 | drm_crtc_vblank_count(crtc), |
623369e5 DV |
1381 | msecs_to_jiffies(50)); |
1382 | ||
6ac7c548 RK |
1383 | WARN(!ret, "[CRTC:%d:%s] vblank wait timed out\n", |
1384 | crtc->base.id, crtc->name); | |
8d4d0d70 | 1385 | |
623369e5 DV |
1386 | drm_crtc_vblank_put(crtc); |
1387 | } | |
1388 | } | |
5ee3229c | 1389 | EXPORT_SYMBOL(drm_atomic_helper_wait_for_vblanks); |
623369e5 | 1390 | |
01086487 BB |
1391 | /** |
1392 | * drm_atomic_helper_wait_for_flip_done - wait for all page flips to be done | |
1393 | * @dev: DRM device | |
1394 | * @old_state: atomic state object with old state structures | |
1395 | * | |
1396 | * Helper to, after atomic commit, wait for page flips on all effected | |
1397 | * crtcs (ie. before cleaning up old framebuffers using | |
1398 | * drm_atomic_helper_cleanup_planes()). Compared to | |
1399 | * drm_atomic_helper_wait_for_vblanks() this waits for the completion of on all | |
1400 | * CRTCs, assuming that cursors-only updates are signalling their completion | |
1401 | * immediately (or using a different path). | |
1402 | * | |
1403 | * This requires that drivers use the nonblocking commit tracking support | |
1404 | * initialized using drm_atomic_helper_setup_commit(). | |
1405 | */ | |
1406 | void drm_atomic_helper_wait_for_flip_done(struct drm_device *dev, | |
1407 | struct drm_atomic_state *old_state) | |
1408 | { | |
163bcc2c | 1409 | struct drm_crtc_state *new_crtc_state; |
01086487 BB |
1410 | struct drm_crtc *crtc; |
1411 | int i; | |
1412 | ||
163bcc2c ML |
1413 | for_each_new_crtc_in_state(old_state, crtc, new_crtc_state, i) { |
1414 | struct drm_crtc_commit *commit = new_crtc_state->commit; | |
01086487 BB |
1415 | int ret; |
1416 | ||
1417 | if (!commit) | |
1418 | continue; | |
1419 | ||
1420 | ret = wait_for_completion_timeout(&commit->flip_done, 10 * HZ); | |
1421 | if (ret == 0) | |
1422 | DRM_ERROR("[CRTC:%d:%s] flip_done timed out\n", | |
1423 | crtc->base.id, crtc->name); | |
1424 | } | |
1425 | } | |
1426 | EXPORT_SYMBOL(drm_atomic_helper_wait_for_flip_done); | |
1427 | ||
623369e5 | 1428 | /** |
9f2a7950 | 1429 | * drm_atomic_helper_commit_tail - commit atomic update to hardware |
1ea0c02e | 1430 | * @old_state: atomic state object with old state structures |
623369e5 | 1431 | * |
6806cdf9 | 1432 | * This is the default implementation for the |
81a099ac MR |
1433 | * &drm_mode_config_helper_funcs.atomic_commit_tail hook, for drivers |
1434 | * that do not support runtime_pm or do not need the CRTC to be | |
1435 | * enabled to perform a commit. Otherwise, see | |
1436 | * drm_atomic_helper_commit_tail_rpm(). | |
623369e5 | 1437 | * |
9f2a7950 | 1438 | * Note that the default ordering of how the various stages are called is to |
81a099ac | 1439 | * match the legacy modeset helper library closest. |
9f2a7950 | 1440 | */ |
1ea0c02e | 1441 | void drm_atomic_helper_commit_tail(struct drm_atomic_state *old_state) |
9f2a7950 | 1442 | { |
1ea0c02e | 1443 | struct drm_device *dev = old_state->dev; |
9f2a7950 | 1444 | |
1ea0c02e | 1445 | drm_atomic_helper_commit_modeset_disables(dev, old_state); |
9f2a7950 | 1446 | |
1ea0c02e | 1447 | drm_atomic_helper_commit_planes(dev, old_state, 0); |
9f2a7950 | 1448 | |
1ea0c02e | 1449 | drm_atomic_helper_commit_modeset_enables(dev, old_state); |
9f2a7950 | 1450 | |
1ea0c02e | 1451 | drm_atomic_helper_commit_hw_done(old_state); |
9f2a7950 | 1452 | |
1ea0c02e | 1453 | drm_atomic_helper_wait_for_vblanks(dev, old_state); |
9f2a7950 | 1454 | |
1ea0c02e | 1455 | drm_atomic_helper_cleanup_planes(dev, old_state); |
9f2a7950 DV |
1456 | } |
1457 | EXPORT_SYMBOL(drm_atomic_helper_commit_tail); | |
1458 | ||
81a099ac MR |
1459 | /** |
1460 | * drm_atomic_helper_commit_tail_rpm - commit atomic update to hardware | |
1461 | * @old_state: new modeset state to be committed | |
1462 | * | |
1463 | * This is an alternative implementation for the | |
1464 | * &drm_mode_config_helper_funcs.atomic_commit_tail hook, for drivers | |
1465 | * that support runtime_pm or need the CRTC to be enabled to perform a | |
1466 | * commit. Otherwise, one should use the default implementation | |
1467 | * drm_atomic_helper_commit_tail(). | |
1468 | */ | |
1469 | void drm_atomic_helper_commit_tail_rpm(struct drm_atomic_state *old_state) | |
1470 | { | |
1471 | struct drm_device *dev = old_state->dev; | |
1472 | ||
1473 | drm_atomic_helper_commit_modeset_disables(dev, old_state); | |
1474 | ||
1475 | drm_atomic_helper_commit_modeset_enables(dev, old_state); | |
1476 | ||
1477 | drm_atomic_helper_commit_planes(dev, old_state, | |
1478 | DRM_PLANE_COMMIT_ACTIVE_ONLY); | |
1479 | ||
1480 | drm_atomic_helper_commit_hw_done(old_state); | |
1481 | ||
1482 | drm_atomic_helper_wait_for_vblanks(dev, old_state); | |
1483 | ||
1484 | drm_atomic_helper_cleanup_planes(dev, old_state); | |
1485 | } | |
1486 | EXPORT_SYMBOL(drm_atomic_helper_commit_tail_rpm); | |
1487 | ||
1ea0c02e | 1488 | static void commit_tail(struct drm_atomic_state *old_state) |
9f2a7950 | 1489 | { |
1ea0c02e | 1490 | struct drm_device *dev = old_state->dev; |
a4b10cce | 1491 | const struct drm_mode_config_helper_funcs *funcs; |
9f2a7950 DV |
1492 | |
1493 | funcs = dev->mode_config.helper_private; | |
1494 | ||
1ea0c02e | 1495 | drm_atomic_helper_wait_for_fences(dev, old_state, false); |
9f2a7950 | 1496 | |
1ea0c02e | 1497 | drm_atomic_helper_wait_for_dependencies(old_state); |
9f2a7950 DV |
1498 | |
1499 | if (funcs && funcs->atomic_commit_tail) | |
1ea0c02e | 1500 | funcs->atomic_commit_tail(old_state); |
9f2a7950 | 1501 | else |
1ea0c02e | 1502 | drm_atomic_helper_commit_tail(old_state); |
9f2a7950 | 1503 | |
1ea0c02e | 1504 | drm_atomic_helper_commit_cleanup_done(old_state); |
9f2a7950 | 1505 | |
1ea0c02e | 1506 | drm_atomic_state_put(old_state); |
9f2a7950 DV |
1507 | } |
1508 | ||
1509 | static void commit_work(struct work_struct *work) | |
1510 | { | |
1511 | struct drm_atomic_state *state = container_of(work, | |
1512 | struct drm_atomic_state, | |
1513 | commit_work); | |
1514 | commit_tail(state); | |
1515 | } | |
1516 | ||
fef9df8b GP |
1517 | /** |
1518 | * drm_atomic_helper_async_check - check if state can be commited asynchronously | |
1519 | * @dev: DRM device | |
1520 | * @state: the driver state object | |
1521 | * | |
1522 | * This helper will check if it is possible to commit the state asynchronously. | |
1523 | * Async commits are not supposed to swap the states like normal sync commits | |
1524 | * but just do in-place changes on the current state. | |
1525 | * | |
1526 | * It will return 0 if the commit can happen in an asynchronous fashion or error | |
1527 | * if not. Note that error just mean it can't be commited asynchronously, if it | |
1528 | * fails the commit should be treated like a normal synchronous commit. | |
1529 | */ | |
1530 | int drm_atomic_helper_async_check(struct drm_device *dev, | |
1531 | struct drm_atomic_state *state) | |
1532 | { | |
1533 | struct drm_crtc *crtc; | |
1534 | struct drm_crtc_state *crtc_state; | |
669c9215 ML |
1535 | struct drm_plane *plane; |
1536 | struct drm_plane_state *old_plane_state, *new_plane_state; | |
fef9df8b | 1537 | const struct drm_plane_helper_funcs *funcs; |
669c9215 | 1538 | int i, n_planes = 0; |
fef9df8b GP |
1539 | |
1540 | for_each_new_crtc_in_state(state, crtc, crtc_state, i) { | |
1541 | if (drm_atomic_crtc_needs_modeset(crtc_state)) | |
1542 | return -EINVAL; | |
1543 | } | |
1544 | ||
669c9215 | 1545 | for_each_oldnew_plane_in_state(state, plane, old_plane_state, new_plane_state, i) |
fef9df8b | 1546 | n_planes++; |
fef9df8b GP |
1547 | |
1548 | /* FIXME: we support only single plane updates for now */ | |
669c9215 | 1549 | if (n_planes != 1) |
fef9df8b GP |
1550 | return -EINVAL; |
1551 | ||
669c9215 | 1552 | if (!new_plane_state->crtc) |
fef9df8b GP |
1553 | return -EINVAL; |
1554 | ||
1555 | funcs = plane->helper_private; | |
1556 | if (!funcs->atomic_async_update) | |
1557 | return -EINVAL; | |
1558 | ||
669c9215 | 1559 | if (new_plane_state->fence) |
fef9df8b GP |
1560 | return -EINVAL; |
1561 | ||
1562 | /* | |
1563 | * Don't do an async update if there is an outstanding commit modifying | |
1564 | * the plane. This prevents our async update's changes from getting | |
1565 | * overridden by a previous synchronous update's state. | |
1566 | */ | |
669c9215 ML |
1567 | if (old_plane_state->commit && |
1568 | !try_wait_for_completion(&old_plane_state->commit->hw_done)) | |
1569 | return -EBUSY; | |
fef9df8b | 1570 | |
669c9215 | 1571 | return funcs->atomic_async_check(plane, new_plane_state); |
fef9df8b GP |
1572 | } |
1573 | EXPORT_SYMBOL(drm_atomic_helper_async_check); | |
1574 | ||
1575 | /** | |
1576 | * drm_atomic_helper_async_commit - commit state asynchronously | |
1577 | * @dev: DRM device | |
1578 | * @state: the driver state object | |
1579 | * | |
1580 | * This function commits a state asynchronously, i.e., not vblank | |
1581 | * synchronized. It should be used on a state only when | |
1582 | * drm_atomic_async_check() succeeds. Async commits are not supposed to swap | |
1583 | * the states like normal sync commits, but just do in-place changes on the | |
1584 | * current state. | |
1585 | */ | |
1586 | void drm_atomic_helper_async_commit(struct drm_device *dev, | |
1587 | struct drm_atomic_state *state) | |
1588 | { | |
1589 | struct drm_plane *plane; | |
1590 | struct drm_plane_state *plane_state; | |
1591 | const struct drm_plane_helper_funcs *funcs; | |
1592 | int i; | |
1593 | ||
1594 | for_each_new_plane_in_state(state, plane, plane_state, i) { | |
1595 | funcs = plane->helper_private; | |
1596 | funcs->atomic_async_update(plane, plane_state); | |
02edfd9c BB |
1597 | |
1598 | /* | |
1599 | * ->atomic_async_update() is supposed to update the | |
1600 | * plane->state in-place, make sure at least common | |
1601 | * properties have been properly updated. | |
1602 | */ | |
1603 | WARN_ON_ONCE(plane->state->fb != plane_state->fb); | |
1604 | WARN_ON_ONCE(plane->state->crtc_x != plane_state->crtc_x); | |
1605 | WARN_ON_ONCE(plane->state->crtc_y != plane_state->crtc_y); | |
1606 | WARN_ON_ONCE(plane->state->src_x != plane_state->src_x); | |
1607 | WARN_ON_ONCE(plane->state->src_y != plane_state->src_y); | |
fef9df8b GP |
1608 | } |
1609 | } | |
1610 | EXPORT_SYMBOL(drm_atomic_helper_async_commit); | |
1611 | ||
9f2a7950 DV |
1612 | /** |
1613 | * drm_atomic_helper_commit - commit validated state object | |
1614 | * @dev: DRM device | |
1615 | * @state: the driver state object | |
1616 | * @nonblock: whether nonblocking behavior is requested. | |
1617 | * | |
1618 | * This function commits a with drm_atomic_helper_check() pre-validated state | |
1619 | * object. This can still fail when e.g. the framebuffer reservation fails. This | |
1620 | * function implements nonblocking commits, using | |
1621 | * drm_atomic_helper_setup_commit() and related functions. | |
1622 | * | |
9f2a7950 | 1623 | * Committing the actual hardware state is done through the |
6806cdf9 DV |
1624 | * &drm_mode_config_helper_funcs.atomic_commit_tail callback, or it's default |
1625 | * implementation drm_atomic_helper_commit_tail(). | |
6e48ae32 | 1626 | * |
c39032a8 | 1627 | * RETURNS: |
623369e5 DV |
1628 | * Zero for success or -errno. |
1629 | */ | |
1630 | int drm_atomic_helper_commit(struct drm_device *dev, | |
1631 | struct drm_atomic_state *state, | |
286dbb8d | 1632 | bool nonblock) |
623369e5 DV |
1633 | { |
1634 | int ret; | |
1635 | ||
fef9df8b GP |
1636 | if (state->async_update) { |
1637 | ret = drm_atomic_helper_prepare_planes(dev, state); | |
1638 | if (ret) | |
1639 | return ret; | |
1640 | ||
1641 | drm_atomic_helper_async_commit(dev, state); | |
1642 | drm_atomic_helper_cleanup_planes(dev, state); | |
1643 | ||
1644 | return 0; | |
1645 | } | |
1646 | ||
a095caa7 DV |
1647 | ret = drm_atomic_helper_setup_commit(state, nonblock); |
1648 | if (ret) | |
1649 | return ret; | |
1650 | ||
9f2a7950 DV |
1651 | INIT_WORK(&state->commit_work, commit_work); |
1652 | ||
623369e5 DV |
1653 | ret = drm_atomic_helper_prepare_planes(dev, state); |
1654 | if (ret) | |
1655 | return ret; | |
1656 | ||
f6ce410a GP |
1657 | if (!nonblock) { |
1658 | ret = drm_atomic_helper_wait_for_fences(dev, state, true); | |
c066d231 ML |
1659 | if (ret) |
1660 | goto err; | |
f6ce410a GP |
1661 | } |
1662 | ||
623369e5 DV |
1663 | /* |
1664 | * This is the point of no return - everything below never fails except | |
1665 | * when the hw goes bonghits. Which means we can commit the new state on | |
1666 | * the software side now. | |
1667 | */ | |
1668 | ||
c066d231 ML |
1669 | ret = drm_atomic_helper_swap_state(state, true); |
1670 | if (ret) | |
1671 | goto err; | |
623369e5 DV |
1672 | |
1673 | /* | |
1674 | * Everything below can be run asynchronously without the need to grab | |
f98bd3ef | 1675 | * any modeset locks at all under one condition: It must be guaranteed |
623369e5 DV |
1676 | * that the asynchronous work has either been cancelled (if the driver |
1677 | * supports it, which at least requires that the framebuffers get | |
1678 | * cleaned up with drm_atomic_helper_cleanup_planes()) or completed | |
1679 | * before the new state gets committed on the software side with | |
1680 | * drm_atomic_helper_swap_state(). | |
1681 | * | |
1682 | * This scheme allows new atomic state updates to be prepared and | |
1683 | * checked in parallel to the asynchronous completion of the previous | |
1684 | * update. Which is important since compositors need to figure out the | |
1685 | * composition of the next frame right after having submitted the | |
1686 | * current layout. | |
9f2a7950 DV |
1687 | * |
1688 | * NOTE: Commit work has multiple phases, first hardware commit, then | |
1689 | * cleanup. We want them to overlap, hence need system_unbound_wq to | |
1690 | * make sure work items don't artifically stall on each another. | |
623369e5 DV |
1691 | */ |
1692 | ||
0853695c | 1693 | drm_atomic_state_get(state); |
9f2a7950 DV |
1694 | if (nonblock) |
1695 | queue_work(system_unbound_wq, &state->commit_work); | |
1696 | else | |
1697 | commit_tail(state); | |
623369e5 DV |
1698 | |
1699 | return 0; | |
c066d231 ML |
1700 | |
1701 | err: | |
1702 | drm_atomic_helper_cleanup_planes(dev, state); | |
1703 | return ret; | |
623369e5 DV |
1704 | } |
1705 | EXPORT_SYMBOL(drm_atomic_helper_commit); | |
1706 | ||
e8c833a7 | 1707 | /** |
286dbb8d | 1708 | * DOC: implementing nonblocking commit |
e8c833a7 | 1709 | * |
9f2a7950 | 1710 | * Nonblocking atomic commits have to be implemented in the following sequence: |
e8c833a7 DV |
1711 | * |
1712 | * 1. Run drm_atomic_helper_prepare_planes() first. This is the only function | |
1713 | * which commit needs to call which can fail, so we want to run it first and | |
1714 | * synchronously. | |
1715 | * | |
286dbb8d | 1716 | * 2. Synchronize with any outstanding nonblocking commit worker threads which |
e8c833a7 DV |
1717 | * might be affected the new state update. This can be done by either cancelling |
1718 | * or flushing the work items, depending upon whether the driver can deal with | |
1719 | * cancelled updates. Note that it is important to ensure that the framebuffer | |
1720 | * cleanup is still done when cancelling. | |
1721 | * | |
9f2a7950 DV |
1722 | * Asynchronous workers need to have sufficient parallelism to be able to run |
1723 | * different atomic commits on different CRTCs in parallel. The simplest way to | |
1724 | * achive this is by running them on the &system_unbound_wq work queue. Note | |
1725 | * that drivers are not required to split up atomic commits and run an | |
1726 | * individual commit in parallel - userspace is supposed to do that if it cares. | |
1727 | * But it might be beneficial to do that for modesets, since those necessarily | |
1728 | * must be done as one global operation, and enabling or disabling a CRTC can | |
1729 | * take a long time. But even that is not required. | |
e8c833a7 DV |
1730 | * |
1731 | * 3. The software state is updated synchronously with | |
26196f7e | 1732 | * drm_atomic_helper_swap_state(). Doing this under the protection of all modeset |
e8c833a7 | 1733 | * locks means concurrent callers never see inconsistent state. And doing this |
286dbb8d ML |
1734 | * while it's guaranteed that no relevant nonblocking worker runs means that |
1735 | * nonblocking workers do not need grab any locks. Actually they must not grab | |
1736 | * locks, for otherwise the work flushing will deadlock. | |
e8c833a7 DV |
1737 | * |
1738 | * 4. Schedule a work item to do all subsequent steps, using the split-out | |
1739 | * commit helpers: a) pre-plane commit b) plane commit c) post-plane commit and | |
1740 | * then cleaning up the framebuffers after the old framebuffer is no longer | |
1741 | * being displayed. | |
9f2a7950 DV |
1742 | * |
1743 | * The above scheme is implemented in the atomic helper libraries in | |
1744 | * drm_atomic_helper_commit() using a bunch of helper functions. See | |
1745 | * drm_atomic_helper_setup_commit() for a starting point. | |
e8c833a7 DV |
1746 | */ |
1747 | ||
a095caa7 DV |
1748 | static int stall_checks(struct drm_crtc *crtc, bool nonblock) |
1749 | { | |
1750 | struct drm_crtc_commit *commit, *stall_commit = NULL; | |
1751 | bool completed = true; | |
1752 | int i; | |
1753 | long ret = 0; | |
1754 | ||
1755 | spin_lock(&crtc->commit_lock); | |
1756 | i = 0; | |
1757 | list_for_each_entry(commit, &crtc->commit_list, commit_entry) { | |
1758 | if (i == 0) { | |
1759 | completed = try_wait_for_completion(&commit->flip_done); | |
1760 | /* Userspace is not allowed to get ahead of the previous | |
1761 | * commit with nonblocking ones. */ | |
1762 | if (!completed && nonblock) { | |
1763 | spin_unlock(&crtc->commit_lock); | |
1764 | return -EBUSY; | |
1765 | } | |
1766 | } else if (i == 1) { | |
f46640b9 | 1767 | stall_commit = drm_crtc_commit_get(commit); |
a095caa7 | 1768 | break; |
723c3e55 | 1769 | } |
a095caa7 DV |
1770 | |
1771 | i++; | |
1772 | } | |
1773 | spin_unlock(&crtc->commit_lock); | |
1774 | ||
1775 | if (!stall_commit) | |
1776 | return 0; | |
1777 | ||
1778 | /* We don't want to let commits get ahead of cleanup work too much, | |
1779 | * stalling on 2nd previous commit means triple-buffer won't ever stall. | |
1780 | */ | |
723c3e55 | 1781 | ret = wait_for_completion_interruptible_timeout(&stall_commit->cleanup_done, |
a095caa7 DV |
1782 | 10*HZ); |
1783 | if (ret == 0) | |
1784 | DRM_ERROR("[CRTC:%d:%s] cleanup_done timed out\n", | |
1785 | crtc->base.id, crtc->name); | |
1786 | ||
1787 | drm_crtc_commit_put(stall_commit); | |
1788 | ||
1789 | return ret < 0 ? ret : 0; | |
1790 | } | |
1791 | ||
899cc5f1 | 1792 | static void release_crtc_commit(struct completion *completion) |
24835e44 DV |
1793 | { |
1794 | struct drm_crtc_commit *commit = container_of(completion, | |
1795 | typeof(*commit), | |
1796 | flip_done); | |
1797 | ||
1798 | drm_crtc_commit_put(commit); | |
1799 | } | |
1800 | ||
21a01abb ML |
1801 | static void init_commit(struct drm_crtc_commit *commit, struct drm_crtc *crtc) |
1802 | { | |
1803 | init_completion(&commit->flip_done); | |
1804 | init_completion(&commit->hw_done); | |
1805 | init_completion(&commit->cleanup_done); | |
1806 | INIT_LIST_HEAD(&commit->commit_entry); | |
1807 | kref_init(&commit->ref); | |
1808 | commit->crtc = crtc; | |
1809 | } | |
1810 | ||
1811 | static struct drm_crtc_commit * | |
1812 | crtc_or_fake_commit(struct drm_atomic_state *state, struct drm_crtc *crtc) | |
1813 | { | |
1814 | if (crtc) { | |
1815 | struct drm_crtc_state *new_crtc_state; | |
1816 | ||
1817 | new_crtc_state = drm_atomic_get_new_crtc_state(state, crtc); | |
1818 | ||
1819 | return new_crtc_state->commit; | |
1820 | } | |
1821 | ||
1822 | if (!state->fake_commit) { | |
1823 | state->fake_commit = kzalloc(sizeof(*state->fake_commit), GFP_KERNEL); | |
1824 | if (!state->fake_commit) | |
1825 | return NULL; | |
1826 | ||
1827 | init_commit(state->fake_commit, NULL); | |
1828 | } | |
1829 | ||
1830 | return state->fake_commit; | |
1831 | } | |
1832 | ||
a095caa7 DV |
1833 | /** |
1834 | * drm_atomic_helper_setup_commit - setup possibly nonblocking commit | |
1835 | * @state: new modeset state to be committed | |
1836 | * @nonblock: whether nonblocking behavior is requested. | |
1837 | * | |
1838 | * This function prepares @state to be used by the atomic helper's support for | |
1839 | * nonblocking commits. Drivers using the nonblocking commit infrastructure | |
6806cdf9 DV |
1840 | * should always call this function from their |
1841 | * &drm_mode_config_funcs.atomic_commit hook. | |
a095caa7 DV |
1842 | * |
1843 | * To be able to use this support drivers need to use a few more helper | |
1844 | * functions. drm_atomic_helper_wait_for_dependencies() must be called before | |
1845 | * actually committing the hardware state, and for nonblocking commits this call | |
1846 | * must be placed in the async worker. See also drm_atomic_helper_swap_state() | |
1847 | * and it's stall parameter, for when a driver's commit hooks look at the | |
6806cdf9 | 1848 | * &drm_crtc.state, &drm_plane.state or &drm_connector.state pointer directly. |
a095caa7 DV |
1849 | * |
1850 | * Completion of the hardware commit step must be signalled using | |
1851 | * drm_atomic_helper_commit_hw_done(). After this step the driver is not allowed | |
1852 | * to read or change any permanent software or hardware modeset state. The only | |
1853 | * exception is state protected by other means than &drm_modeset_lock locks. | |
1854 | * Only the free standing @state with pointers to the old state structures can | |
1855 | * be inspected, e.g. to clean up old buffers using | |
1856 | * drm_atomic_helper_cleanup_planes(). | |
1857 | * | |
1858 | * At the very end, before cleaning up @state drivers must call | |
1859 | * drm_atomic_helper_commit_cleanup_done(). | |
1860 | * | |
1861 | * This is all implemented by in drm_atomic_helper_commit(), giving drivers a | |
9ac07815 | 1862 | * complete and easy-to-use default implementation of the atomic_commit() hook. |
a095caa7 DV |
1863 | * |
1864 | * The tracking of asynchronously executed and still pending commits is done | |
1865 | * using the core structure &drm_crtc_commit. | |
1866 | * | |
1867 | * By default there's no need to clean up resources allocated by this function | |
1868 | * explicitly: drm_atomic_state_default_clear() will take care of that | |
1869 | * automatically. | |
1870 | * | |
1871 | * Returns: | |
1872 | * | |
1873 | * 0 on success. -EBUSY when userspace schedules nonblocking commits too fast, | |
1874 | * -ENOMEM on allocation failures and -EINTR when a signal is pending. | |
1875 | */ | |
1876 | int drm_atomic_helper_setup_commit(struct drm_atomic_state *state, | |
1877 | bool nonblock) | |
1878 | { | |
1879 | struct drm_crtc *crtc; | |
415c3ac3 | 1880 | struct drm_crtc_state *old_crtc_state, *new_crtc_state; |
21a01abb ML |
1881 | struct drm_connector *conn; |
1882 | struct drm_connector_state *old_conn_state, *new_conn_state; | |
1883 | struct drm_plane *plane; | |
1884 | struct drm_plane_state *old_plane_state, *new_plane_state; | |
a095caa7 DV |
1885 | struct drm_crtc_commit *commit; |
1886 | int i, ret; | |
1887 | ||
415c3ac3 | 1888 | for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) { |
a095caa7 DV |
1889 | commit = kzalloc(sizeof(*commit), GFP_KERNEL); |
1890 | if (!commit) | |
1891 | return -ENOMEM; | |
1892 | ||
21a01abb | 1893 | init_commit(commit, crtc); |
a095caa7 | 1894 | |
163bcc2c | 1895 | new_crtc_state->commit = commit; |
a095caa7 DV |
1896 | |
1897 | ret = stall_checks(crtc, nonblock); | |
1898 | if (ret) | |
1899 | return ret; | |
1900 | ||
1901 | /* Drivers only send out events when at least either current or | |
1902 | * new CRTC state is active. Complete right away if everything | |
1903 | * stays off. */ | |
415c3ac3 | 1904 | if (!old_crtc_state->active && !new_crtc_state->active) { |
a095caa7 DV |
1905 | complete_all(&commit->flip_done); |
1906 | continue; | |
1907 | } | |
1908 | ||
1909 | /* Legacy cursor updates are fully unsynced. */ | |
1910 | if (state->legacy_cursor_update) { | |
1911 | complete_all(&commit->flip_done); | |
1912 | continue; | |
1913 | } | |
1914 | ||
415c3ac3 | 1915 | if (!new_crtc_state->event) { |
a095caa7 DV |
1916 | commit->event = kzalloc(sizeof(*commit->event), |
1917 | GFP_KERNEL); | |
1918 | if (!commit->event) | |
1919 | return -ENOMEM; | |
1920 | ||
415c3ac3 | 1921 | new_crtc_state->event = commit->event; |
a095caa7 DV |
1922 | } |
1923 | ||
415c3ac3 ML |
1924 | new_crtc_state->event->base.completion = &commit->flip_done; |
1925 | new_crtc_state->event->base.completion_release = release_crtc_commit; | |
24835e44 | 1926 | drm_crtc_commit_get(commit); |
1c6ceeee LSL |
1927 | |
1928 | commit->abort_completion = true; | |
a095caa7 DV |
1929 | } |
1930 | ||
21a01abb | 1931 | for_each_oldnew_connector_in_state(state, conn, old_conn_state, new_conn_state, i) { |
21a01abb ML |
1932 | /* Userspace is not allowed to get ahead of the previous |
1933 | * commit with nonblocking ones. */ | |
1934 | if (nonblock && old_conn_state->commit && | |
1935 | !try_wait_for_completion(&old_conn_state->commit->flip_done)) | |
1936 | return -EBUSY; | |
a095caa7 | 1937 | |
1f2d9bdc DV |
1938 | /* Always track connectors explicitly for e.g. link retraining. */ |
1939 | commit = crtc_or_fake_commit(state, new_conn_state->crtc ?: old_conn_state->crtc); | |
21a01abb ML |
1940 | if (!commit) |
1941 | return -ENOMEM; | |
a095caa7 | 1942 | |
21a01abb ML |
1943 | new_conn_state->commit = drm_crtc_commit_get(commit); |
1944 | } | |
1945 | ||
1946 | for_each_oldnew_plane_in_state(state, plane, old_plane_state, new_plane_state, i) { | |
21a01abb ML |
1947 | /* Userspace is not allowed to get ahead of the previous |
1948 | * commit with nonblocking ones. */ | |
1949 | if (nonblock && old_plane_state->commit && | |
1950 | !try_wait_for_completion(&old_plane_state->commit->flip_done)) | |
1951 | return -EBUSY; | |
1952 | ||
1f2d9bdc | 1953 | /* Always track planes explicitly for async pageflip support. */ |
4edd6084 | 1954 | commit = crtc_or_fake_commit(state, new_plane_state->crtc ?: old_plane_state->crtc); |
21a01abb ML |
1955 | if (!commit) |
1956 | return -ENOMEM; | |
1957 | ||
1958 | new_plane_state->commit = drm_crtc_commit_get(commit); | |
a095caa7 DV |
1959 | } |
1960 | ||
a095caa7 | 1961 | return 0; |
a095caa7 | 1962 | } |
a095caa7 | 1963 | EXPORT_SYMBOL(drm_atomic_helper_setup_commit); |
a095caa7 DV |
1964 | |
1965 | /** | |
1966 | * drm_atomic_helper_wait_for_dependencies - wait for required preceeding commits | |
1ea0c02e | 1967 | * @old_state: atomic state object with old state structures |
a095caa7 DV |
1968 | * |
1969 | * This function waits for all preceeding commits that touch the same CRTC as | |
1ea0c02e | 1970 | * @old_state to both be committed to the hardware (as signalled by |
a095caa7 | 1971 | * drm_atomic_helper_commit_hw_done) and executed by the hardware (as signalled |
277b09cf | 1972 | * by calling drm_crtc_send_vblank_event() on the &drm_crtc_state.event). |
a095caa7 DV |
1973 | * |
1974 | * This is part of the atomic helper support for nonblocking commits, see | |
1975 | * drm_atomic_helper_setup_commit() for an overview. | |
1976 | */ | |
1ea0c02e | 1977 | void drm_atomic_helper_wait_for_dependencies(struct drm_atomic_state *old_state) |
a095caa7 DV |
1978 | { |
1979 | struct drm_crtc *crtc; | |
163bcc2c | 1980 | struct drm_crtc_state *old_crtc_state; |
21a01abb ML |
1981 | struct drm_plane *plane; |
1982 | struct drm_plane_state *old_plane_state; | |
1983 | struct drm_connector *conn; | |
1984 | struct drm_connector_state *old_conn_state; | |
a095caa7 DV |
1985 | struct drm_crtc_commit *commit; |
1986 | int i; | |
1987 | long ret; | |
1988 | ||
163bcc2c ML |
1989 | for_each_old_crtc_in_state(old_state, crtc, old_crtc_state, i) { |
1990 | commit = old_crtc_state->commit; | |
a095caa7 DV |
1991 | |
1992 | if (!commit) | |
1993 | continue; | |
1994 | ||
1995 | ret = wait_for_completion_timeout(&commit->hw_done, | |
1996 | 10*HZ); | |
1997 | if (ret == 0) | |
1998 | DRM_ERROR("[CRTC:%d:%s] hw_done timed out\n", | |
1999 | crtc->base.id, crtc->name); | |
2000 | ||
2001 | /* Currently no support for overwriting flips, hence | |
2002 | * stall for previous one to execute completely. */ | |
2003 | ret = wait_for_completion_timeout(&commit->flip_done, | |
2004 | 10*HZ); | |
2005 | if (ret == 0) | |
2006 | DRM_ERROR("[CRTC:%d:%s] flip_done timed out\n", | |
2007 | crtc->base.id, crtc->name); | |
a095caa7 | 2008 | } |
21a01abb ML |
2009 | |
2010 | for_each_old_connector_in_state(old_state, conn, old_conn_state, i) { | |
2011 | commit = old_conn_state->commit; | |
a095caa7 | 2012 | |
21a01abb ML |
2013 | if (!commit) |
2014 | continue; | |
2015 | ||
2016 | ret = wait_for_completion_timeout(&commit->hw_done, | |
2017 | 10*HZ); | |
2018 | if (ret == 0) | |
2019 | DRM_ERROR("[CONNECTOR:%d:%s] hw_done timed out\n", | |
2020 | conn->base.id, conn->name); | |
2021 | ||
2022 | /* Currently no support for overwriting flips, hence | |
2023 | * stall for previous one to execute completely. */ | |
2024 | ret = wait_for_completion_timeout(&commit->flip_done, | |
2025 | 10*HZ); | |
2026 | if (ret == 0) | |
2027 | DRM_ERROR("[CONNECTOR:%d:%s] flip_done timed out\n", | |
2028 | conn->base.id, conn->name); | |
2029 | } | |
2030 | ||
2031 | for_each_old_plane_in_state(old_state, plane, old_plane_state, i) { | |
2032 | commit = old_plane_state->commit; | |
2033 | ||
2034 | if (!commit) | |
2035 | continue; | |
2036 | ||
2037 | ret = wait_for_completion_timeout(&commit->hw_done, | |
2038 | 10*HZ); | |
2039 | if (ret == 0) | |
2040 | DRM_ERROR("[PLANE:%d:%s] hw_done timed out\n", | |
2041 | plane->base.id, plane->name); | |
2042 | ||
2043 | /* Currently no support for overwriting flips, hence | |
2044 | * stall for previous one to execute completely. */ | |
2045 | ret = wait_for_completion_timeout(&commit->flip_done, | |
2046 | 10*HZ); | |
2047 | if (ret == 0) | |
2048 | DRM_ERROR("[PLANE:%d:%s] flip_done timed out\n", | |
2049 | plane->base.id, plane->name); | |
a095caa7 DV |
2050 | } |
2051 | } | |
2052 | EXPORT_SYMBOL(drm_atomic_helper_wait_for_dependencies); | |
2053 | ||
2054 | /** | |
2055 | * drm_atomic_helper_commit_hw_done - setup possible nonblocking commit | |
1ea0c02e | 2056 | * @old_state: atomic state object with old state structures |
a095caa7 DV |
2057 | * |
2058 | * This function is used to signal completion of the hardware commit step. After | |
2059 | * this step the driver is not allowed to read or change any permanent software | |
2060 | * or hardware modeset state. The only exception is state protected by other | |
2061 | * means than &drm_modeset_lock locks. | |
2062 | * | |
2063 | * Drivers should try to postpone any expensive or delayed cleanup work after | |
2064 | * this function is called. | |
2065 | * | |
2066 | * This is part of the atomic helper support for nonblocking commits, see | |
2067 | * drm_atomic_helper_setup_commit() for an overview. | |
2068 | */ | |
1ea0c02e | 2069 | void drm_atomic_helper_commit_hw_done(struct drm_atomic_state *old_state) |
a095caa7 DV |
2070 | { |
2071 | struct drm_crtc *crtc; | |
163bcc2c | 2072 | struct drm_crtc_state *old_crtc_state, *new_crtc_state; |
a095caa7 DV |
2073 | struct drm_crtc_commit *commit; |
2074 | int i; | |
2075 | ||
163bcc2c ML |
2076 | for_each_oldnew_crtc_in_state(old_state, crtc, old_crtc_state, new_crtc_state, i) { |
2077 | commit = new_crtc_state->commit; | |
a095caa7 DV |
2078 | if (!commit) |
2079 | continue; | |
2080 | ||
163bcc2c ML |
2081 | /* |
2082 | * copy new_crtc_state->commit to old_crtc_state->commit, | |
2083 | * it's unsafe to touch new_crtc_state after hw_done, | |
2084 | * but we still need to do so in cleanup_done(). | |
2085 | */ | |
2086 | if (old_crtc_state->commit) | |
2087 | drm_crtc_commit_put(old_crtc_state->commit); | |
2088 | ||
2089 | old_crtc_state->commit = drm_crtc_commit_get(commit); | |
2090 | ||
a095caa7 | 2091 | /* backend must have consumed any event by now */ |
415c3ac3 | 2092 | WARN_ON(new_crtc_state->event); |
a095caa7 | 2093 | complete_all(&commit->hw_done); |
a095caa7 | 2094 | } |
21a01abb ML |
2095 | |
2096 | if (old_state->fake_commit) { | |
2097 | complete_all(&old_state->fake_commit->hw_done); | |
2098 | complete_all(&old_state->fake_commit->flip_done); | |
2099 | } | |
a095caa7 DV |
2100 | } |
2101 | EXPORT_SYMBOL(drm_atomic_helper_commit_hw_done); | |
2102 | ||
2103 | /** | |
2104 | * drm_atomic_helper_commit_cleanup_done - signal completion of commit | |
1ea0c02e | 2105 | * @old_state: atomic state object with old state structures |
a095caa7 | 2106 | * |
1ea0c02e DV |
2107 | * This signals completion of the atomic update @old_state, including any |
2108 | * cleanup work. If used, it must be called right before calling | |
0853695c | 2109 | * drm_atomic_state_put(). |
a095caa7 DV |
2110 | * |
2111 | * This is part of the atomic helper support for nonblocking commits, see | |
2112 | * drm_atomic_helper_setup_commit() for an overview. | |
2113 | */ | |
1ea0c02e | 2114 | void drm_atomic_helper_commit_cleanup_done(struct drm_atomic_state *old_state) |
a095caa7 DV |
2115 | { |
2116 | struct drm_crtc *crtc; | |
163bcc2c | 2117 | struct drm_crtc_state *old_crtc_state; |
a095caa7 DV |
2118 | struct drm_crtc_commit *commit; |
2119 | int i; | |
a095caa7 | 2120 | |
163bcc2c ML |
2121 | for_each_old_crtc_in_state(old_state, crtc, old_crtc_state, i) { |
2122 | commit = old_crtc_state->commit; | |
a095caa7 DV |
2123 | if (WARN_ON(!commit)) |
2124 | continue; | |
2125 | ||
a095caa7 DV |
2126 | complete_all(&commit->cleanup_done); |
2127 | WARN_ON(!try_wait_for_completion(&commit->hw_done)); | |
2128 | ||
7141fd3e | 2129 | spin_lock(&crtc->commit_lock); |
a095caa7 DV |
2130 | list_del(&commit->commit_entry); |
2131 | spin_unlock(&crtc->commit_lock); | |
2132 | } | |
21a01abb ML |
2133 | |
2134 | if (old_state->fake_commit) | |
2135 | complete_all(&old_state->fake_commit->cleanup_done); | |
a095caa7 DV |
2136 | } |
2137 | EXPORT_SYMBOL(drm_atomic_helper_commit_cleanup_done); | |
2138 | ||
c2fcd274 | 2139 | /** |
2e3afd47 | 2140 | * drm_atomic_helper_prepare_planes - prepare plane resources before commit |
c2fcd274 | 2141 | * @dev: DRM device |
2e3afd47 | 2142 | * @state: atomic state object with new state structures |
c2fcd274 DV |
2143 | * |
2144 | * This function prepares plane state, specifically framebuffers, for the new | |
6806cdf9 DV |
2145 | * configuration, by calling &drm_plane_helper_funcs.prepare_fb. If any failure |
2146 | * is encountered this function will call &drm_plane_helper_funcs.cleanup_fb on | |
2147 | * any already successfully prepared framebuffer. | |
c2fcd274 DV |
2148 | * |
2149 | * Returns: | |
2150 | * 0 on success, negative error code on failure. | |
2151 | */ | |
2152 | int drm_atomic_helper_prepare_planes(struct drm_device *dev, | |
2153 | struct drm_atomic_state *state) | |
2154 | { | |
be9174a4 | 2155 | struct drm_plane *plane; |
415c3ac3 | 2156 | struct drm_plane_state *new_plane_state; |
be9174a4 | 2157 | int ret, i, j; |
c2fcd274 | 2158 | |
415c3ac3 | 2159 | for_each_new_plane_in_state(state, plane, new_plane_state, i) { |
b5ceff20 | 2160 | const struct drm_plane_helper_funcs *funcs; |
c2fcd274 DV |
2161 | |
2162 | funcs = plane->helper_private; | |
2163 | ||
844f9111 | 2164 | if (funcs->prepare_fb) { |
415c3ac3 | 2165 | ret = funcs->prepare_fb(plane, new_plane_state); |
c2fcd274 DV |
2166 | if (ret) |
2167 | goto fail; | |
2168 | } | |
2169 | } | |
2170 | ||
2171 | return 0; | |
2172 | ||
2173 | fail: | |
415c3ac3 | 2174 | for_each_new_plane_in_state(state, plane, new_plane_state, j) { |
b5ceff20 | 2175 | const struct drm_plane_helper_funcs *funcs; |
c2fcd274 | 2176 | |
be9174a4 | 2177 | if (j >= i) |
c2fcd274 DV |
2178 | continue; |
2179 | ||
2180 | funcs = plane->helper_private; | |
2181 | ||
844f9111 | 2182 | if (funcs->cleanup_fb) |
415c3ac3 | 2183 | funcs->cleanup_fb(plane, new_plane_state); |
c2fcd274 DV |
2184 | } |
2185 | ||
2186 | return ret; | |
2187 | } | |
2188 | EXPORT_SYMBOL(drm_atomic_helper_prepare_planes); | |
2189 | ||
7135ac54 | 2190 | static bool plane_crtc_active(const struct drm_plane_state *state) |
aef9dbb8 DV |
2191 | { |
2192 | return state->crtc && state->crtc->state->active; | |
2193 | } | |
2194 | ||
c2fcd274 DV |
2195 | /** |
2196 | * drm_atomic_helper_commit_planes - commit plane state | |
2197 | * @dev: DRM device | |
b0fcfc89 | 2198 | * @old_state: atomic state object with old state structures |
2b58e98d | 2199 | * @flags: flags for committing plane state |
c2fcd274 DV |
2200 | * |
2201 | * This function commits the new plane state using the plane and atomic helper | |
2202 | * functions for planes and crtcs. It assumes that the atomic state has already | |
2203 | * been pushed into the relevant object state pointers, since this step can no | |
2204 | * longer fail. | |
2205 | * | |
b0fcfc89 | 2206 | * It still requires the global state object @old_state to know which planes and |
c2fcd274 | 2207 | * crtcs need to be updated though. |
de28d021 ML |
2208 | * |
2209 | * Note that this function does all plane updates across all CRTCs in one step. | |
2210 | * If the hardware can't support this approach look at | |
2211 | * drm_atomic_helper_commit_planes_on_crtc() instead. | |
6e48ae32 DV |
2212 | * |
2213 | * Plane parameters can be updated by applications while the associated CRTC is | |
2214 | * disabled. The DRM/KMS core will store the parameters in the plane state, | |
2215 | * which will be available to the driver when the CRTC is turned on. As a result | |
2216 | * most drivers don't need to be immediately notified of plane updates for a | |
2217 | * disabled CRTC. | |
2218 | * | |
2b58e98d LY |
2219 | * Unless otherwise needed, drivers are advised to set the ACTIVE_ONLY flag in |
2220 | * @flags in order not to receive plane update notifications related to a | |
2221 | * disabled CRTC. This avoids the need to manually ignore plane updates in | |
6e48ae32 DV |
2222 | * driver code when the driver and/or hardware can't or just don't need to deal |
2223 | * with updates on disabled CRTCs, for example when supporting runtime PM. | |
2224 | * | |
2b58e98d LY |
2225 | * Drivers may set the NO_DISABLE_AFTER_MODESET flag in @flags if the relevant |
2226 | * display controllers require to disable a CRTC's planes when the CRTC is | |
6806cdf9 DV |
2227 | * disabled. This function would skip the &drm_plane_helper_funcs.atomic_disable |
2228 | * call for a plane if the CRTC of the old plane state needs a modesetting | |
2229 | * operation. Of course, the drivers need to disable the planes in their CRTC | |
2230 | * disable callbacks since no one else would do that. | |
2b58e98d LY |
2231 | * |
2232 | * The drm_atomic_helper_commit() default implementation doesn't set the | |
2233 | * ACTIVE_ONLY flag to most closely match the behaviour of the legacy helpers. | |
2234 | * This should not be copied blindly by drivers. | |
c2fcd274 DV |
2235 | */ |
2236 | void drm_atomic_helper_commit_planes(struct drm_device *dev, | |
aef9dbb8 | 2237 | struct drm_atomic_state *old_state, |
2b58e98d | 2238 | uint32_t flags) |
c2fcd274 | 2239 | { |
df63b999 | 2240 | struct drm_crtc *crtc; |
415c3ac3 | 2241 | struct drm_crtc_state *old_crtc_state, *new_crtc_state; |
df63b999 | 2242 | struct drm_plane *plane; |
415c3ac3 | 2243 | struct drm_plane_state *old_plane_state, *new_plane_state; |
c2fcd274 | 2244 | int i; |
2b58e98d LY |
2245 | bool active_only = flags & DRM_PLANE_COMMIT_ACTIVE_ONLY; |
2246 | bool no_disable = flags & DRM_PLANE_COMMIT_NO_DISABLE_AFTER_MODESET; | |
c2fcd274 | 2247 | |
415c3ac3 | 2248 | for_each_oldnew_crtc_in_state(old_state, crtc, old_crtc_state, new_crtc_state, i) { |
b5ceff20 | 2249 | const struct drm_crtc_helper_funcs *funcs; |
c2fcd274 DV |
2250 | |
2251 | funcs = crtc->helper_private; | |
2252 | ||
2253 | if (!funcs || !funcs->atomic_begin) | |
2254 | continue; | |
2255 | ||
415c3ac3 | 2256 | if (active_only && !new_crtc_state->active) |
aef9dbb8 DV |
2257 | continue; |
2258 | ||
613d2b27 | 2259 | funcs->atomic_begin(crtc, old_crtc_state); |
c2fcd274 DV |
2260 | } |
2261 | ||
415c3ac3 | 2262 | for_each_oldnew_plane_in_state(old_state, plane, old_plane_state, new_plane_state, i) { |
b5ceff20 | 2263 | const struct drm_plane_helper_funcs *funcs; |
216c59d6 | 2264 | bool disabling; |
c2fcd274 DV |
2265 | |
2266 | funcs = plane->helper_private; | |
2267 | ||
3cad4b68 | 2268 | if (!funcs) |
c2fcd274 DV |
2269 | continue; |
2270 | ||
51ffa12d ML |
2271 | disabling = drm_atomic_plane_disabling(old_plane_state, |
2272 | new_plane_state); | |
216c59d6 LP |
2273 | |
2274 | if (active_only) { | |
2275 | /* | |
2276 | * Skip planes related to inactive CRTCs. If the plane | |
2277 | * is enabled use the state of the current CRTC. If the | |
2278 | * plane is being disabled use the state of the old | |
2279 | * CRTC to avoid skipping planes being disabled on an | |
2280 | * active CRTC. | |
2281 | */ | |
415c3ac3 | 2282 | if (!disabling && !plane_crtc_active(new_plane_state)) |
216c59d6 LP |
2283 | continue; |
2284 | if (disabling && !plane_crtc_active(old_plane_state)) | |
2285 | continue; | |
2286 | } | |
aef9dbb8 | 2287 | |
407b8bd9 TR |
2288 | /* |
2289 | * Special-case disabling the plane if drivers support it. | |
2290 | */ | |
2b58e98d LY |
2291 | if (disabling && funcs->atomic_disable) { |
2292 | struct drm_crtc_state *crtc_state; | |
2293 | ||
2294 | crtc_state = old_plane_state->crtc->state; | |
2295 | ||
2296 | if (drm_atomic_crtc_needs_modeset(crtc_state) && | |
2297 | no_disable) | |
2298 | continue; | |
2299 | ||
407b8bd9 | 2300 | funcs->atomic_disable(plane, old_plane_state); |
415c3ac3 | 2301 | } else if (new_plane_state->crtc || disabling) { |
407b8bd9 | 2302 | funcs->atomic_update(plane, old_plane_state); |
2b58e98d | 2303 | } |
c2fcd274 DV |
2304 | } |
2305 | ||
415c3ac3 | 2306 | for_each_oldnew_crtc_in_state(old_state, crtc, old_crtc_state, new_crtc_state, i) { |
b5ceff20 | 2307 | const struct drm_crtc_helper_funcs *funcs; |
c2fcd274 DV |
2308 | |
2309 | funcs = crtc->helper_private; | |
2310 | ||
2311 | if (!funcs || !funcs->atomic_flush) | |
2312 | continue; | |
2313 | ||
415c3ac3 | 2314 | if (active_only && !new_crtc_state->active) |
aef9dbb8 DV |
2315 | continue; |
2316 | ||
613d2b27 | 2317 | funcs->atomic_flush(crtc, old_crtc_state); |
c2fcd274 DV |
2318 | } |
2319 | } | |
2320 | EXPORT_SYMBOL(drm_atomic_helper_commit_planes); | |
2321 | ||
de28d021 ML |
2322 | /** |
2323 | * drm_atomic_helper_commit_planes_on_crtc - commit plane state for a crtc | |
2324 | * @old_crtc_state: atomic state object with the old crtc state | |
2325 | * | |
2326 | * This function commits the new plane state using the plane and atomic helper | |
2327 | * functions for planes on the specific crtc. It assumes that the atomic state | |
2328 | * has already been pushed into the relevant object state pointers, since this | |
2329 | * step can no longer fail. | |
2330 | * | |
2331 | * This function is useful when plane updates should be done crtc-by-crtc | |
2332 | * instead of one global step like drm_atomic_helper_commit_planes() does. | |
2333 | * | |
2334 | * This function can only be savely used when planes are not allowed to move | |
2335 | * between different CRTCs because this function doesn't handle inter-CRTC | |
2336 | * depencies. Callers need to ensure that either no such depencies exist, | |
2337 | * resolve them through ordering of commit calls or through some other means. | |
2338 | */ | |
2339 | void | |
2340 | drm_atomic_helper_commit_planes_on_crtc(struct drm_crtc_state *old_crtc_state) | |
2341 | { | |
2342 | const struct drm_crtc_helper_funcs *crtc_funcs; | |
2343 | struct drm_crtc *crtc = old_crtc_state->crtc; | |
2344 | struct drm_atomic_state *old_state = old_crtc_state->state; | |
e35a2f9a VS |
2345 | struct drm_crtc_state *new_crtc_state = |
2346 | drm_atomic_get_new_crtc_state(old_state, crtc); | |
de28d021 ML |
2347 | struct drm_plane *plane; |
2348 | unsigned plane_mask; | |
2349 | ||
2350 | plane_mask = old_crtc_state->plane_mask; | |
e35a2f9a | 2351 | plane_mask |= new_crtc_state->plane_mask; |
de28d021 ML |
2352 | |
2353 | crtc_funcs = crtc->helper_private; | |
2354 | if (crtc_funcs && crtc_funcs->atomic_begin) | |
613d2b27 | 2355 | crtc_funcs->atomic_begin(crtc, old_crtc_state); |
de28d021 ML |
2356 | |
2357 | drm_for_each_plane_mask(plane, crtc->dev, plane_mask) { | |
2358 | struct drm_plane_state *old_plane_state = | |
b4d93679 | 2359 | drm_atomic_get_old_plane_state(old_state, plane); |
e35a2f9a VS |
2360 | struct drm_plane_state *new_plane_state = |
2361 | drm_atomic_get_new_plane_state(old_state, plane); | |
de28d021 ML |
2362 | const struct drm_plane_helper_funcs *plane_funcs; |
2363 | ||
2364 | plane_funcs = plane->helper_private; | |
2365 | ||
2366 | if (!old_plane_state || !plane_funcs) | |
2367 | continue; | |
2368 | ||
e35a2f9a VS |
2369 | WARN_ON(new_plane_state->crtc && |
2370 | new_plane_state->crtc != crtc); | |
de28d021 | 2371 | |
e35a2f9a | 2372 | if (drm_atomic_plane_disabling(old_plane_state, new_plane_state) && |
de28d021 ML |
2373 | plane_funcs->atomic_disable) |
2374 | plane_funcs->atomic_disable(plane, old_plane_state); | |
e35a2f9a VS |
2375 | else if (new_plane_state->crtc || |
2376 | drm_atomic_plane_disabling(old_plane_state, new_plane_state)) | |
de28d021 ML |
2377 | plane_funcs->atomic_update(plane, old_plane_state); |
2378 | } | |
2379 | ||
2380 | if (crtc_funcs && crtc_funcs->atomic_flush) | |
613d2b27 | 2381 | crtc_funcs->atomic_flush(crtc, old_crtc_state); |
de28d021 ML |
2382 | } |
2383 | EXPORT_SYMBOL(drm_atomic_helper_commit_planes_on_crtc); | |
2384 | ||
6753ba97 JS |
2385 | /** |
2386 | * drm_atomic_helper_disable_planes_on_crtc - helper to disable CRTC's planes | |
28500291 | 2387 | * @old_crtc_state: atomic state object with the old CRTC state |
6753ba97 JS |
2388 | * @atomic: if set, synchronize with CRTC's atomic_begin/flush hooks |
2389 | * | |
2390 | * Disables all planes associated with the given CRTC. This can be | |
28500291 LY |
2391 | * used for instance in the CRTC helper atomic_disable callback to disable |
2392 | * all planes. | |
6753ba97 JS |
2393 | * |
2394 | * If the atomic-parameter is set the function calls the CRTC's | |
2395 | * atomic_begin hook before and atomic_flush hook after disabling the | |
2396 | * planes. | |
2397 | * | |
2398 | * It is a bug to call this function without having implemented the | |
6806cdf9 | 2399 | * &drm_plane_helper_funcs.atomic_disable plane hook. |
6753ba97 | 2400 | */ |
28500291 LY |
2401 | void |
2402 | drm_atomic_helper_disable_planes_on_crtc(struct drm_crtc_state *old_crtc_state, | |
2403 | bool atomic) | |
6753ba97 | 2404 | { |
28500291 | 2405 | struct drm_crtc *crtc = old_crtc_state->crtc; |
6753ba97 JS |
2406 | const struct drm_crtc_helper_funcs *crtc_funcs = |
2407 | crtc->helper_private; | |
2408 | struct drm_plane *plane; | |
2409 | ||
2410 | if (atomic && crtc_funcs && crtc_funcs->atomic_begin) | |
2411 | crtc_funcs->atomic_begin(crtc, NULL); | |
2412 | ||
28500291 | 2413 | drm_atomic_crtc_state_for_each_plane(plane, old_crtc_state) { |
6753ba97 JS |
2414 | const struct drm_plane_helper_funcs *plane_funcs = |
2415 | plane->helper_private; | |
2416 | ||
28500291 | 2417 | if (!plane_funcs) |
6753ba97 JS |
2418 | continue; |
2419 | ||
2420 | WARN_ON(!plane_funcs->atomic_disable); | |
2421 | if (plane_funcs->atomic_disable) | |
2422 | plane_funcs->atomic_disable(plane, NULL); | |
2423 | } | |
2424 | ||
2425 | if (atomic && crtc_funcs && crtc_funcs->atomic_flush) | |
2426 | crtc_funcs->atomic_flush(crtc, NULL); | |
2427 | } | |
2428 | EXPORT_SYMBOL(drm_atomic_helper_disable_planes_on_crtc); | |
2429 | ||
c2fcd274 DV |
2430 | /** |
2431 | * drm_atomic_helper_cleanup_planes - cleanup plane resources after commit | |
2432 | * @dev: DRM device | |
2433 | * @old_state: atomic state object with old state structures | |
2434 | * | |
2435 | * This function cleans up plane state, specifically framebuffers, from the old | |
2436 | * configuration. Hence the old configuration must be perserved in @old_state to | |
2437 | * be able to call this function. | |
2438 | * | |
2439 | * This function must also be called on the new state when the atomic update | |
2440 | * fails at any point after calling drm_atomic_helper_prepare_planes(). | |
2441 | */ | |
2442 | void drm_atomic_helper_cleanup_planes(struct drm_device *dev, | |
2443 | struct drm_atomic_state *old_state) | |
2444 | { | |
df63b999 | 2445 | struct drm_plane *plane; |
415c3ac3 | 2446 | struct drm_plane_state *old_plane_state, *new_plane_state; |
c2fcd274 DV |
2447 | int i; |
2448 | ||
415c3ac3 | 2449 | for_each_oldnew_plane_in_state(old_state, plane, old_plane_state, new_plane_state, i) { |
b5ceff20 | 2450 | const struct drm_plane_helper_funcs *funcs; |
415c3ac3 ML |
2451 | struct drm_plane_state *plane_state; |
2452 | ||
2453 | /* | |
2454 | * This might be called before swapping when commit is aborted, | |
2455 | * in which case we have to cleanup the new state. | |
2456 | */ | |
2457 | if (old_plane_state == plane->state) | |
2458 | plane_state = new_plane_state; | |
2459 | else | |
2460 | plane_state = old_plane_state; | |
c2fcd274 | 2461 | |
c2fcd274 DV |
2462 | funcs = plane->helper_private; |
2463 | ||
844f9111 ML |
2464 | if (funcs->cleanup_fb) |
2465 | funcs->cleanup_fb(plane, plane_state); | |
c2fcd274 DV |
2466 | } |
2467 | } | |
2468 | EXPORT_SYMBOL(drm_atomic_helper_cleanup_planes); | |
2469 | ||
2470 | /** | |
2471 | * drm_atomic_helper_swap_state - store atomic state into current sw state | |
c2fcd274 | 2472 | * @state: atomic state |
c066d231 | 2473 | * @stall: stall for preceeding commits |
c2fcd274 DV |
2474 | * |
2475 | * This function stores the atomic state into the current state pointers in all | |
2476 | * driver objects. It should be called after all failing steps have been done | |
2477 | * and succeeded, but before the actual hardware state is committed. | |
2478 | * | |
2479 | * For cleanup and error recovery the current state for all changed objects will | |
c066d231 | 2480 | * be swapped into @state. |
c2fcd274 DV |
2481 | * |
2482 | * With that sequence it fits perfectly into the plane prepare/cleanup sequence: | |
2483 | * | |
2484 | * 1. Call drm_atomic_helper_prepare_planes() with the staged atomic state. | |
2485 | * | |
2486 | * 2. Do any other steps that might fail. | |
2487 | * | |
2488 | * 3. Put the staged state into the current state pointers with this function. | |
2489 | * | |
2490 | * 4. Actually commit the hardware state. | |
2491 | * | |
26196f7e | 2492 | * 5. Call drm_atomic_helper_cleanup_planes() with @state, which since step 3 |
c2fcd274 | 2493 | * contains the old state. Also do any other cleanup required with that state. |
a095caa7 DV |
2494 | * |
2495 | * @stall must be set when nonblocking commits for this driver directly access | |
6806cdf9 DV |
2496 | * the &drm_plane.state, &drm_crtc.state or &drm_connector.state pointer. With |
2497 | * the current atomic helpers this is almost always the case, since the helpers | |
a095caa7 | 2498 | * don't pass the right state structures to the callbacks. |
c066d231 ML |
2499 | * |
2500 | * Returns: | |
2501 | * | |
c4bbb735 ML |
2502 | * Returns 0 on success. Can return -ERESTARTSYS when @stall is true and the |
2503 | * waiting for the previous commits has been interrupted. | |
c2fcd274 | 2504 | */ |
c066d231 | 2505 | int drm_atomic_helper_swap_state(struct drm_atomic_state *state, |
5e84c269 | 2506 | bool stall) |
c2fcd274 | 2507 | { |
c4bbb735 | 2508 | int i, ret; |
be9174a4 | 2509 | struct drm_connector *connector; |
415c3ac3 | 2510 | struct drm_connector_state *old_conn_state, *new_conn_state; |
be9174a4 | 2511 | struct drm_crtc *crtc; |
415c3ac3 | 2512 | struct drm_crtc_state *old_crtc_state, *new_crtc_state; |
be9174a4 | 2513 | struct drm_plane *plane; |
415c3ac3 | 2514 | struct drm_plane_state *old_plane_state, *new_plane_state; |
a095caa7 | 2515 | struct drm_crtc_commit *commit; |
a4370c77 VS |
2516 | struct drm_private_obj *obj; |
2517 | struct drm_private_state *old_obj_state, *new_obj_state; | |
a095caa7 DV |
2518 | |
2519 | if (stall) { | |
21a01abb ML |
2520 | /* |
2521 | * We have to stall for hw_done here before | |
2522 | * drm_atomic_helper_wait_for_dependencies() because flip | |
2523 | * depth > 1 is not yet supported by all drivers. As long as | |
2524 | * obj->state is directly dereferenced anywhere in the drivers | |
2525 | * atomic_commit_tail function, then it's unsafe to swap state | |
2526 | * before drm_atomic_helper_commit_hw_done() is called. | |
2527 | */ | |
2528 | ||
163bcc2c ML |
2529 | for_each_old_crtc_in_state(state, crtc, old_crtc_state, i) { |
2530 | commit = old_crtc_state->commit; | |
a095caa7 DV |
2531 | |
2532 | if (!commit) | |
2533 | continue; | |
2534 | ||
c4bbb735 | 2535 | ret = wait_for_completion_interruptible(&commit->hw_done); |
c4bbb735 ML |
2536 | if (ret) |
2537 | return ret; | |
a095caa7 | 2538 | } |
21a01abb ML |
2539 | |
2540 | for_each_old_connector_in_state(state, connector, old_conn_state, i) { | |
2541 | commit = old_conn_state->commit; | |
a095caa7 DV |
2542 | |
2543 | if (!commit) | |
2544 | continue; | |
2545 | ||
c4bbb735 | 2546 | ret = wait_for_completion_interruptible(&commit->hw_done); |
21a01abb ML |
2547 | if (ret) |
2548 | return ret; | |
2549 | } | |
c4bbb735 | 2550 | |
21a01abb ML |
2551 | for_each_old_plane_in_state(state, plane, old_plane_state, i) { |
2552 | commit = old_plane_state->commit; | |
2553 | ||
2554 | if (!commit) | |
2555 | continue; | |
2556 | ||
2557 | ret = wait_for_completion_interruptible(&commit->hw_done); | |
c4bbb735 ML |
2558 | if (ret) |
2559 | return ret; | |
a095caa7 DV |
2560 | } |
2561 | } | |
c2fcd274 | 2562 | |
415c3ac3 | 2563 | for_each_oldnew_connector_in_state(state, connector, old_conn_state, new_conn_state, i) { |
581e49fe ML |
2564 | WARN_ON(connector->state != old_conn_state); |
2565 | ||
415c3ac3 ML |
2566 | old_conn_state->state = state; |
2567 | new_conn_state->state = NULL; | |
2568 | ||
2569 | state->connectors[i].state = old_conn_state; | |
2570 | connector->state = new_conn_state; | |
c2fcd274 DV |
2571 | } |
2572 | ||
415c3ac3 | 2573 | for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) { |
581e49fe ML |
2574 | WARN_ON(crtc->state != old_crtc_state); |
2575 | ||
415c3ac3 ML |
2576 | old_crtc_state->state = state; |
2577 | new_crtc_state->state = NULL; | |
2578 | ||
2579 | state->crtcs[i].state = old_crtc_state; | |
2580 | crtc->state = new_crtc_state; | |
a095caa7 | 2581 | |
163bcc2c | 2582 | if (new_crtc_state->commit) { |
a095caa7 | 2583 | spin_lock(&crtc->commit_lock); |
163bcc2c | 2584 | list_add(&new_crtc_state->commit->commit_entry, |
a095caa7 DV |
2585 | &crtc->commit_list); |
2586 | spin_unlock(&crtc->commit_lock); | |
2587 | ||
163bcc2c | 2588 | new_crtc_state->commit->event = NULL; |
a095caa7 | 2589 | } |
c2fcd274 DV |
2590 | } |
2591 | ||
415c3ac3 | 2592 | for_each_oldnew_plane_in_state(state, plane, old_plane_state, new_plane_state, i) { |
581e49fe ML |
2593 | WARN_ON(plane->state != old_plane_state); |
2594 | ||
415c3ac3 ML |
2595 | old_plane_state->state = state; |
2596 | new_plane_state->state = NULL; | |
2597 | ||
2598 | state->planes[i].state = old_plane_state; | |
2599 | plane->state = new_plane_state; | |
c2fcd274 | 2600 | } |
b430c27a | 2601 | |
a4370c77 VS |
2602 | for_each_oldnew_private_obj_in_state(state, obj, old_obj_state, new_obj_state, i) { |
2603 | WARN_ON(obj->state != old_obj_state); | |
2604 | ||
2605 | old_obj_state->state = state; | |
2606 | new_obj_state->state = NULL; | |
2607 | ||
2608 | state->private_objs[i].state = old_obj_state; | |
2609 | obj->state = new_obj_state; | |
2610 | } | |
c066d231 ML |
2611 | |
2612 | return 0; | |
c2fcd274 DV |
2613 | } |
2614 | EXPORT_SYMBOL(drm_atomic_helper_swap_state); | |
042652ed DV |
2615 | |
2616 | /** | |
2617 | * drm_atomic_helper_update_plane - Helper for primary plane update using atomic | |
2618 | * @plane: plane object to update | |
2619 | * @crtc: owning CRTC of owning plane | |
2620 | * @fb: framebuffer to flip onto plane | |
2621 | * @crtc_x: x offset of primary plane on crtc | |
2622 | * @crtc_y: y offset of primary plane on crtc | |
2623 | * @crtc_w: width of primary plane rectangle on crtc | |
2624 | * @crtc_h: height of primary plane rectangle on crtc | |
2625 | * @src_x: x offset of @fb for panning | |
2626 | * @src_y: y offset of @fb for panning | |
2627 | * @src_w: width of source rectangle in @fb | |
2628 | * @src_h: height of source rectangle in @fb | |
34a2ab5e | 2629 | * @ctx: lock acquire context |
042652ed DV |
2630 | * |
2631 | * Provides a default plane update handler using the atomic driver interface. | |
2632 | * | |
2633 | * RETURNS: | |
2634 | * Zero on success, error code on failure | |
2635 | */ | |
2636 | int drm_atomic_helper_update_plane(struct drm_plane *plane, | |
2637 | struct drm_crtc *crtc, | |
2638 | struct drm_framebuffer *fb, | |
2639 | int crtc_x, int crtc_y, | |
2640 | unsigned int crtc_w, unsigned int crtc_h, | |
2641 | uint32_t src_x, uint32_t src_y, | |
34a2ab5e DV |
2642 | uint32_t src_w, uint32_t src_h, |
2643 | struct drm_modeset_acquire_ctx *ctx) | |
042652ed DV |
2644 | { |
2645 | struct drm_atomic_state *state; | |
2646 | struct drm_plane_state *plane_state; | |
2647 | int ret = 0; | |
2648 | ||
2649 | state = drm_atomic_state_alloc(plane->dev); | |
2650 | if (!state) | |
2651 | return -ENOMEM; | |
2652 | ||
d26f96c7 | 2653 | state->acquire_ctx = ctx; |
042652ed DV |
2654 | plane_state = drm_atomic_get_plane_state(state, plane); |
2655 | if (IS_ERR(plane_state)) { | |
2656 | ret = PTR_ERR(plane_state); | |
2657 | goto fail; | |
2658 | } | |
2659 | ||
07cc0ef6 | 2660 | ret = drm_atomic_set_crtc_for_plane(plane_state, crtc); |
042652ed DV |
2661 | if (ret != 0) |
2662 | goto fail; | |
321ebf04 | 2663 | drm_atomic_set_fb_for_plane(plane_state, fb); |
042652ed DV |
2664 | plane_state->crtc_x = crtc_x; |
2665 | plane_state->crtc_y = crtc_y; | |
042652ed | 2666 | plane_state->crtc_w = crtc_w; |
02e6f379 | 2667 | plane_state->crtc_h = crtc_h; |
042652ed DV |
2668 | plane_state->src_x = src_x; |
2669 | plane_state->src_y = src_y; | |
042652ed | 2670 | plane_state->src_w = src_w; |
02e6f379 | 2671 | plane_state->src_h = src_h; |
042652ed | 2672 | |
3671c580 DV |
2673 | if (plane == crtc->cursor) |
2674 | state->legacy_cursor_update = true; | |
2675 | ||
042652ed | 2676 | ret = drm_atomic_commit(state); |
042652ed | 2677 | fail: |
0853695c | 2678 | drm_atomic_state_put(state); |
042652ed | 2679 | return ret; |
042652ed DV |
2680 | } |
2681 | EXPORT_SYMBOL(drm_atomic_helper_update_plane); | |
2682 | ||
2683 | /** | |
2684 | * drm_atomic_helper_disable_plane - Helper for primary plane disable using * atomic | |
2685 | * @plane: plane to disable | |
19315294 | 2686 | * @ctx: lock acquire context |
042652ed DV |
2687 | * |
2688 | * Provides a default plane disable handler using the atomic driver interface. | |
2689 | * | |
2690 | * RETURNS: | |
2691 | * Zero on success, error code on failure | |
2692 | */ | |
19315294 DV |
2693 | int drm_atomic_helper_disable_plane(struct drm_plane *plane, |
2694 | struct drm_modeset_acquire_ctx *ctx) | |
042652ed DV |
2695 | { |
2696 | struct drm_atomic_state *state; | |
2697 | struct drm_plane_state *plane_state; | |
2698 | int ret = 0; | |
2699 | ||
2700 | state = drm_atomic_state_alloc(plane->dev); | |
2701 | if (!state) | |
2702 | return -ENOMEM; | |
2703 | ||
d26f96c7 | 2704 | state->acquire_ctx = ctx; |
042652ed DV |
2705 | plane_state = drm_atomic_get_plane_state(state, plane); |
2706 | if (IS_ERR(plane_state)) { | |
2707 | ret = PTR_ERR(plane_state); | |
2708 | goto fail; | |
2709 | } | |
2710 | ||
a36c027d | 2711 | if (plane_state->crtc && plane_state->crtc->cursor == plane) |
24e79d0d ML |
2712 | plane_state->state->legacy_cursor_update = true; |
2713 | ||
bbb1e524 | 2714 | ret = __drm_atomic_helper_disable_plane(plane, plane_state); |
042652ed DV |
2715 | if (ret != 0) |
2716 | goto fail; | |
f02ad907 | 2717 | |
042652ed | 2718 | ret = drm_atomic_commit(state); |
042652ed | 2719 | fail: |
0853695c | 2720 | drm_atomic_state_put(state); |
042652ed | 2721 | return ret; |
042652ed DV |
2722 | } |
2723 | EXPORT_SYMBOL(drm_atomic_helper_disable_plane); | |
2724 | ||
bbb1e524 RC |
2725 | /* just used from fb-helper and atomic-helper: */ |
2726 | int __drm_atomic_helper_disable_plane(struct drm_plane *plane, | |
2727 | struct drm_plane_state *plane_state) | |
2728 | { | |
2729 | int ret; | |
2730 | ||
2731 | ret = drm_atomic_set_crtc_for_plane(plane_state, NULL); | |
2732 | if (ret != 0) | |
2733 | return ret; | |
2734 | ||
2735 | drm_atomic_set_fb_for_plane(plane_state, NULL); | |
2736 | plane_state->crtc_x = 0; | |
2737 | plane_state->crtc_y = 0; | |
bbb1e524 | 2738 | plane_state->crtc_w = 0; |
02e6f379 | 2739 | plane_state->crtc_h = 0; |
bbb1e524 RC |
2740 | plane_state->src_x = 0; |
2741 | plane_state->src_y = 0; | |
bbb1e524 | 2742 | plane_state->src_w = 0; |
02e6f379 | 2743 | plane_state->src_h = 0; |
bbb1e524 | 2744 | |
bbb1e524 RC |
2745 | return 0; |
2746 | } | |
2747 | ||
042652ed DV |
2748 | static int update_output_state(struct drm_atomic_state *state, |
2749 | struct drm_mode_set *set) | |
2750 | { | |
2751 | struct drm_device *dev = set->crtc->dev; | |
df63b999 | 2752 | struct drm_crtc *crtc; |
415c3ac3 | 2753 | struct drm_crtc_state *new_crtc_state; |
df63b999 | 2754 | struct drm_connector *connector; |
415c3ac3 | 2755 | struct drm_connector_state *new_conn_state; |
6ab520a2 | 2756 | int ret, i; |
042652ed DV |
2757 | |
2758 | ret = drm_modeset_lock(&dev->mode_config.connection_mutex, | |
2759 | state->acquire_ctx); | |
2760 | if (ret) | |
2761 | return ret; | |
2762 | ||
6ab520a2 ML |
2763 | /* First disable all connectors on the target crtc. */ |
2764 | ret = drm_atomic_add_affected_connectors(state, set->crtc); | |
2765 | if (ret) | |
2766 | return ret; | |
042652ed | 2767 | |
415c3ac3 ML |
2768 | for_each_new_connector_in_state(state, connector, new_conn_state, i) { |
2769 | if (new_conn_state->crtc == set->crtc) { | |
2770 | ret = drm_atomic_set_crtc_for_connector(new_conn_state, | |
042652ed DV |
2771 | NULL); |
2772 | if (ret) | |
2773 | return ret; | |
415c3ac3 | 2774 | |
40ee6fbe | 2775 | /* Make sure legacy setCrtc always re-trains */ |
415c3ac3 | 2776 | new_conn_state->link_status = DRM_LINK_STATUS_GOOD; |
042652ed | 2777 | } |
6ab520a2 | 2778 | } |
042652ed | 2779 | |
6ab520a2 ML |
2780 | /* Then set all connectors from set->connectors on the target crtc */ |
2781 | for (i = 0; i < set->num_connectors; i++) { | |
415c3ac3 | 2782 | new_conn_state = drm_atomic_get_connector_state(state, |
6ab520a2 | 2783 | set->connectors[i]); |
415c3ac3 ML |
2784 | if (IS_ERR(new_conn_state)) |
2785 | return PTR_ERR(new_conn_state); | |
6ab520a2 | 2786 | |
415c3ac3 | 2787 | ret = drm_atomic_set_crtc_for_connector(new_conn_state, |
6ab520a2 ML |
2788 | set->crtc); |
2789 | if (ret) | |
2790 | return ret; | |
042652ed DV |
2791 | } |
2792 | ||
415c3ac3 | 2793 | for_each_new_crtc_in_state(state, crtc, new_crtc_state, i) { |
042652ed DV |
2794 | /* Don't update ->enable for the CRTC in the set_config request, |
2795 | * since a mismatch would indicate a bug in the upper layers. | |
2796 | * The actual modeset code later on will catch any | |
2797 | * inconsistencies here. */ | |
2798 | if (crtc == set->crtc) | |
2799 | continue; | |
2800 | ||
415c3ac3 ML |
2801 | if (!new_crtc_state->connector_mask) { |
2802 | ret = drm_atomic_set_mode_prop_for_crtc(new_crtc_state, | |
c30f55a7 LP |
2803 | NULL); |
2804 | if (ret < 0) | |
2805 | return ret; | |
2806 | ||
415c3ac3 | 2807 | new_crtc_state->active = false; |
c30f55a7 | 2808 | } |
042652ed DV |
2809 | } |
2810 | ||
2811 | return 0; | |
2812 | } | |
2813 | ||
2814 | /** | |
2815 | * drm_atomic_helper_set_config - set a new config from userspace | |
2816 | * @set: mode set configuration | |
a4eff9aa | 2817 | * @ctx: lock acquisition context |
042652ed DV |
2818 | * |
2819 | * Provides a default crtc set_config handler using the atomic driver interface. | |
2820 | * | |
40ee6fbe MN |
2821 | * NOTE: For backwards compatibility with old userspace this automatically |
2822 | * resets the "link-status" property to GOOD, to force any link | |
2823 | * re-training. The SETCRTC ioctl does not define whether an update does | |
2824 | * need a full modeset or just a plane update, hence we're allowed to do | |
2825 | * that. See also drm_mode_connector_set_link_status_property(). | |
2826 | * | |
042652ed DV |
2827 | * Returns: |
2828 | * Returns 0 on success, negative errno numbers on failure. | |
2829 | */ | |
a4eff9aa DV |
2830 | int drm_atomic_helper_set_config(struct drm_mode_set *set, |
2831 | struct drm_modeset_acquire_ctx *ctx) | |
042652ed DV |
2832 | { |
2833 | struct drm_atomic_state *state; | |
2834 | struct drm_crtc *crtc = set->crtc; | |
042652ed DV |
2835 | int ret = 0; |
2836 | ||
2837 | state = drm_atomic_state_alloc(crtc->dev); | |
2838 | if (!state) | |
2839 | return -ENOMEM; | |
2840 | ||
38b6441e | 2841 | state->acquire_ctx = ctx; |
bbb1e524 RC |
2842 | ret = __drm_atomic_helper_set_config(set, state); |
2843 | if (ret != 0) | |
1fa4da04 | 2844 | goto fail; |
042652ed | 2845 | |
44596b8c ML |
2846 | ret = handle_conflicting_encoders(state, true); |
2847 | if (ret) | |
2848 | return ret; | |
2849 | ||
bbb1e524 | 2850 | ret = drm_atomic_commit(state); |
bbb1e524 | 2851 | |
1fa4da04 | 2852 | fail: |
0853695c | 2853 | drm_atomic_state_put(state); |
bbb1e524 | 2854 | return ret; |
bbb1e524 RC |
2855 | } |
2856 | EXPORT_SYMBOL(drm_atomic_helper_set_config); | |
2857 | ||
2858 | /* just used from fb-helper and atomic-helper: */ | |
2859 | int __drm_atomic_helper_set_config(struct drm_mode_set *set, | |
2860 | struct drm_atomic_state *state) | |
2861 | { | |
2862 | struct drm_crtc_state *crtc_state; | |
2863 | struct drm_plane_state *primary_state; | |
2864 | struct drm_crtc *crtc = set->crtc; | |
83926117 | 2865 | int hdisplay, vdisplay; |
bbb1e524 RC |
2866 | int ret; |
2867 | ||
2868 | crtc_state = drm_atomic_get_crtc_state(state, crtc); | |
2869 | if (IS_ERR(crtc_state)) | |
2870 | return PTR_ERR(crtc_state); | |
2871 | ||
2872 | primary_state = drm_atomic_get_plane_state(state, crtc->primary); | |
2873 | if (IS_ERR(primary_state)) | |
2874 | return PTR_ERR(primary_state); | |
e5b5341c | 2875 | |
042652ed DV |
2876 | if (!set->mode) { |
2877 | WARN_ON(set->fb); | |
2878 | WARN_ON(set->num_connectors); | |
2879 | ||
819364da DS |
2880 | ret = drm_atomic_set_mode_for_crtc(crtc_state, NULL); |
2881 | if (ret != 0) | |
bbb1e524 | 2882 | return ret; |
819364da | 2883 | |
eab3bbef | 2884 | crtc_state->active = false; |
e5b5341c | 2885 | |
07cc0ef6 | 2886 | ret = drm_atomic_set_crtc_for_plane(primary_state, NULL); |
e5b5341c | 2887 | if (ret != 0) |
bbb1e524 | 2888 | return ret; |
e5b5341c RC |
2889 | |
2890 | drm_atomic_set_fb_for_plane(primary_state, NULL); | |
2891 | ||
042652ed DV |
2892 | goto commit; |
2893 | } | |
2894 | ||
2895 | WARN_ON(!set->fb); | |
2896 | WARN_ON(!set->num_connectors); | |
2897 | ||
819364da DS |
2898 | ret = drm_atomic_set_mode_for_crtc(crtc_state, set->mode); |
2899 | if (ret != 0) | |
bbb1e524 | 2900 | return ret; |
819364da | 2901 | |
eab3bbef | 2902 | crtc_state->active = true; |
042652ed | 2903 | |
07cc0ef6 | 2904 | ret = drm_atomic_set_crtc_for_plane(primary_state, crtc); |
042652ed | 2905 | if (ret != 0) |
bbb1e524 RC |
2906 | return ret; |
2907 | ||
196cd5d3 | 2908 | drm_mode_get_hv_timing(set->mode, &hdisplay, &vdisplay); |
83926117 | 2909 | |
321ebf04 | 2910 | drm_atomic_set_fb_for_plane(primary_state, set->fb); |
042652ed DV |
2911 | primary_state->crtc_x = 0; |
2912 | primary_state->crtc_y = 0; | |
83926117 | 2913 | primary_state->crtc_w = hdisplay; |
02e6f379 | 2914 | primary_state->crtc_h = vdisplay; |
042652ed DV |
2915 | primary_state->src_x = set->x << 16; |
2916 | primary_state->src_y = set->y << 16; | |
bd2ef25d | 2917 | if (drm_rotation_90_or_270(primary_state->rotation)) { |
83926117 | 2918 | primary_state->src_w = vdisplay << 16; |
02e6f379 | 2919 | primary_state->src_h = hdisplay << 16; |
41121248 | 2920 | } else { |
83926117 | 2921 | primary_state->src_w = hdisplay << 16; |
02e6f379 | 2922 | primary_state->src_h = vdisplay << 16; |
41121248 | 2923 | } |
042652ed DV |
2924 | |
2925 | commit: | |
2926 | ret = update_output_state(state, set); | |
2927 | if (ret) | |
bbb1e524 | 2928 | return ret; |
042652ed | 2929 | |
042652ed | 2930 | return 0; |
042652ed | 2931 | } |
042652ed | 2932 | |
5e9cfeba VS |
2933 | static int __drm_atomic_helper_disable_all(struct drm_device *dev, |
2934 | struct drm_modeset_acquire_ctx *ctx, | |
2935 | bool clean_old_fbs) | |
14942760 TR |
2936 | { |
2937 | struct drm_atomic_state *state; | |
9b2104f4 | 2938 | struct drm_connector_state *conn_state; |
14942760 | 2939 | struct drm_connector *conn; |
9b2104f4 ML |
2940 | struct drm_plane_state *plane_state; |
2941 | struct drm_plane *plane; | |
2942 | struct drm_crtc_state *crtc_state; | |
2943 | struct drm_crtc *crtc; | |
2944 | int ret, i; | |
14942760 TR |
2945 | |
2946 | state = drm_atomic_state_alloc(dev); | |
2947 | if (!state) | |
2948 | return -ENOMEM; | |
2949 | ||
2950 | state->acquire_ctx = ctx; | |
2951 | ||
9b2104f4 | 2952 | drm_for_each_crtc(crtc, dev) { |
14942760 TR |
2953 | crtc_state = drm_atomic_get_crtc_state(state, crtc); |
2954 | if (IS_ERR(crtc_state)) { | |
9b2104f4 | 2955 | ret = PTR_ERR(crtc_state); |
14942760 TR |
2956 | goto free; |
2957 | } | |
2958 | ||
2959 | crtc_state->active = false; | |
9b2104f4 ML |
2960 | |
2961 | ret = drm_atomic_set_mode_prop_for_crtc(crtc_state, NULL); | |
2962 | if (ret < 0) | |
2963 | goto free; | |
2964 | ||
2965 | ret = drm_atomic_add_affected_planes(state, crtc); | |
2966 | if (ret < 0) | |
2967 | goto free; | |
2968 | ||
2969 | ret = drm_atomic_add_affected_connectors(state, crtc); | |
2970 | if (ret < 0) | |
2971 | goto free; | |
2972 | } | |
2973 | ||
dfb8bb3b | 2974 | for_each_new_connector_in_state(state, conn, conn_state, i) { |
9b2104f4 ML |
2975 | ret = drm_atomic_set_crtc_for_connector(conn_state, NULL); |
2976 | if (ret < 0) | |
2977 | goto free; | |
2978 | } | |
2979 | ||
dfb8bb3b | 2980 | for_each_new_plane_in_state(state, plane, plane_state, i) { |
9b2104f4 ML |
2981 | ret = drm_atomic_set_crtc_for_plane(plane_state, NULL); |
2982 | if (ret < 0) | |
2983 | goto free; | |
2984 | ||
2985 | drm_atomic_set_fb_for_plane(plane_state, NULL); | |
14942760 TR |
2986 | } |
2987 | ||
9b2104f4 | 2988 | ret = drm_atomic_commit(state); |
14942760 | 2989 | free: |
0853695c | 2990 | drm_atomic_state_put(state); |
9b2104f4 | 2991 | return ret; |
14942760 | 2992 | } |
9b2104f4 | 2993 | |
5e9cfeba VS |
2994 | /** |
2995 | * drm_atomic_helper_disable_all - disable all currently active outputs | |
2996 | * @dev: DRM device | |
2997 | * @ctx: lock acquisition context | |
2998 | * | |
2999 | * Loops through all connectors, finding those that aren't turned off and then | |
3000 | * turns them off by setting their DPMS mode to OFF and deactivating the CRTC | |
3001 | * that they are connected to. | |
3002 | * | |
3003 | * This is used for example in suspend/resume to disable all currently active | |
3004 | * functions when suspending. If you just want to shut down everything at e.g. | |
3005 | * driver unload, look at drm_atomic_helper_shutdown(). | |
3006 | * | |
3007 | * Note that if callers haven't already acquired all modeset locks this might | |
3008 | * return -EDEADLK, which must be handled by calling drm_modeset_backoff(). | |
3009 | * | |
3010 | * Returns: | |
3011 | * 0 on success or a negative error code on failure. | |
3012 | * | |
3013 | * See also: | |
3014 | * drm_atomic_helper_suspend(), drm_atomic_helper_resume() and | |
3015 | * drm_atomic_helper_shutdown(). | |
3016 | */ | |
3017 | int drm_atomic_helper_disable_all(struct drm_device *dev, | |
3018 | struct drm_modeset_acquire_ctx *ctx) | |
3019 | { | |
3020 | return __drm_atomic_helper_disable_all(dev, ctx, false); | |
3021 | } | |
14942760 TR |
3022 | EXPORT_SYMBOL(drm_atomic_helper_disable_all); |
3023 | ||
18dddadc DV |
3024 | /** |
3025 | * drm_atomic_helper_shutdown - shutdown all CRTC | |
3026 | * @dev: DRM device | |
3027 | * | |
3028 | * This shuts down all CRTC, which is useful for driver unloading. Shutdown on | |
3029 | * suspend should instead be handled with drm_atomic_helper_suspend(), since | |
3030 | * that also takes a snapshot of the modeset state to be restored on resume. | |
3031 | * | |
3032 | * This is just a convenience wrapper around drm_atomic_helper_disable_all(), | |
3033 | * and it is the atomic version of drm_crtc_force_disable_all(). | |
3034 | */ | |
3035 | void drm_atomic_helper_shutdown(struct drm_device *dev) | |
3036 | { | |
3037 | struct drm_modeset_acquire_ctx ctx; | |
3038 | int ret; | |
3039 | ||
3040 | drm_modeset_acquire_init(&ctx, 0); | |
3041 | while (1) { | |
3042 | ret = drm_modeset_lock_all_ctx(dev, &ctx); | |
3043 | if (!ret) | |
5e9cfeba | 3044 | ret = __drm_atomic_helper_disable_all(dev, &ctx, true); |
18dddadc DV |
3045 | |
3046 | if (ret != -EDEADLK) | |
3047 | break; | |
3048 | ||
3049 | drm_modeset_backoff(&ctx); | |
3050 | } | |
3051 | ||
3052 | if (ret) | |
3053 | DRM_ERROR("Disabling all crtc's during unload failed with %i\n", ret); | |
3054 | ||
3055 | drm_modeset_drop_locks(&ctx); | |
3056 | drm_modeset_acquire_fini(&ctx); | |
3057 | } | |
3058 | EXPORT_SYMBOL(drm_atomic_helper_shutdown); | |
3059 | ||
14942760 TR |
3060 | /** |
3061 | * drm_atomic_helper_suspend - subsystem-level suspend helper | |
3062 | * @dev: DRM device | |
3063 | * | |
3064 | * Duplicates the current atomic state, disables all active outputs and then | |
3065 | * returns a pointer to the original atomic state to the caller. Drivers can | |
3066 | * pass this pointer to the drm_atomic_helper_resume() helper upon resume to | |
3067 | * restore the output configuration that was active at the time the system | |
3068 | * entered suspend. | |
3069 | * | |
3070 | * Note that it is potentially unsafe to use this. The atomic state object | |
3071 | * returned by this function is assumed to be persistent. Drivers must ensure | |
3072 | * that this holds true. Before calling this function, drivers must make sure | |
3073 | * to suspend fbdev emulation so that nothing can be using the device. | |
3074 | * | |
3075 | * Returns: | |
3076 | * A pointer to a copy of the state before suspend on success or an ERR_PTR()- | |
3077 | * encoded error code on failure. Drivers should store the returned atomic | |
3078 | * state object and pass it to the drm_atomic_helper_resume() helper upon | |
3079 | * resume. | |
3080 | * | |
3081 | * See also: | |
3082 | * drm_atomic_helper_duplicate_state(), drm_atomic_helper_disable_all(), | |
581e49fe | 3083 | * drm_atomic_helper_resume(), drm_atomic_helper_commit_duplicated_state() |
14942760 TR |
3084 | */ |
3085 | struct drm_atomic_state *drm_atomic_helper_suspend(struct drm_device *dev) | |
3086 | { | |
3087 | struct drm_modeset_acquire_ctx ctx; | |
3088 | struct drm_atomic_state *state; | |
3089 | int err; | |
3090 | ||
3091 | drm_modeset_acquire_init(&ctx, 0); | |
3092 | ||
3093 | retry: | |
3094 | err = drm_modeset_lock_all_ctx(dev, &ctx); | |
3095 | if (err < 0) { | |
3096 | state = ERR_PTR(err); | |
3097 | goto unlock; | |
3098 | } | |
3099 | ||
3100 | state = drm_atomic_helper_duplicate_state(dev, &ctx); | |
3101 | if (IS_ERR(state)) | |
3102 | goto unlock; | |
3103 | ||
3104 | err = drm_atomic_helper_disable_all(dev, &ctx); | |
3105 | if (err < 0) { | |
0853695c | 3106 | drm_atomic_state_put(state); |
14942760 TR |
3107 | state = ERR_PTR(err); |
3108 | goto unlock; | |
3109 | } | |
3110 | ||
3111 | unlock: | |
3112 | if (PTR_ERR(state) == -EDEADLK) { | |
3113 | drm_modeset_backoff(&ctx); | |
3114 | goto retry; | |
3115 | } | |
3116 | ||
3117 | drm_modeset_drop_locks(&ctx); | |
3118 | drm_modeset_acquire_fini(&ctx); | |
3119 | return state; | |
3120 | } | |
3121 | EXPORT_SYMBOL(drm_atomic_helper_suspend); | |
3122 | ||
581e49fe ML |
3123 | /** |
3124 | * drm_atomic_helper_commit_duplicated_state - commit duplicated state | |
3125 | * @state: duplicated atomic state to commit | |
3126 | * @ctx: pointer to acquire_ctx to use for commit. | |
3127 | * | |
3128 | * The state returned by drm_atomic_helper_duplicate_state() and | |
3129 | * drm_atomic_helper_suspend() is partially invalid, and needs to | |
3130 | * be fixed up before commit. | |
3131 | * | |
3132 | * Returns: | |
3133 | * 0 on success or a negative error code on failure. | |
3134 | * | |
3135 | * See also: | |
3136 | * drm_atomic_helper_suspend() | |
3137 | */ | |
3138 | int drm_atomic_helper_commit_duplicated_state(struct drm_atomic_state *state, | |
3139 | struct drm_modeset_acquire_ctx *ctx) | |
3140 | { | |
3141 | int i; | |
3142 | struct drm_plane *plane; | |
415c3ac3 | 3143 | struct drm_plane_state *new_plane_state; |
581e49fe | 3144 | struct drm_connector *connector; |
415c3ac3 | 3145 | struct drm_connector_state *new_conn_state; |
581e49fe | 3146 | struct drm_crtc *crtc; |
415c3ac3 | 3147 | struct drm_crtc_state *new_crtc_state; |
581e49fe ML |
3148 | |
3149 | state->acquire_ctx = ctx; | |
3150 | ||
e00fb856 | 3151 | for_each_new_plane_in_state(state, plane, new_plane_state, i) |
581e49fe ML |
3152 | state->planes[i].old_state = plane->state; |
3153 | ||
415c3ac3 | 3154 | for_each_new_crtc_in_state(state, crtc, new_crtc_state, i) |
581e49fe ML |
3155 | state->crtcs[i].old_state = crtc->state; |
3156 | ||
415c3ac3 | 3157 | for_each_new_connector_in_state(state, connector, new_conn_state, i) |
581e49fe ML |
3158 | state->connectors[i].old_state = connector->state; |
3159 | ||
5e9cfeba | 3160 | return drm_atomic_commit(state); |
581e49fe ML |
3161 | } |
3162 | EXPORT_SYMBOL(drm_atomic_helper_commit_duplicated_state); | |
3163 | ||
14942760 TR |
3164 | /** |
3165 | * drm_atomic_helper_resume - subsystem-level resume helper | |
3166 | * @dev: DRM device | |
3167 | * @state: atomic state to resume to | |
3168 | * | |
3169 | * Calls drm_mode_config_reset() to synchronize hardware and software states, | |
3170 | * grabs all modeset locks and commits the atomic state object. This can be | |
3171 | * used in conjunction with the drm_atomic_helper_suspend() helper to | |
3172 | * implement suspend/resume for drivers that support atomic mode-setting. | |
3173 | * | |
3174 | * Returns: | |
3175 | * 0 on success or a negative error code on failure. | |
3176 | * | |
3177 | * See also: | |
3178 | * drm_atomic_helper_suspend() | |
3179 | */ | |
3180 | int drm_atomic_helper_resume(struct drm_device *dev, | |
3181 | struct drm_atomic_state *state) | |
3182 | { | |
a5b8444e | 3183 | struct drm_modeset_acquire_ctx ctx; |
14942760 TR |
3184 | int err; |
3185 | ||
3186 | drm_mode_config_reset(dev); | |
581e49fe | 3187 | |
a5b8444e DV |
3188 | drm_modeset_acquire_init(&ctx, 0); |
3189 | while (1) { | |
869e188a DV |
3190 | err = drm_modeset_lock_all_ctx(dev, &ctx); |
3191 | if (err) | |
3192 | goto out; | |
3193 | ||
a5b8444e | 3194 | err = drm_atomic_helper_commit_duplicated_state(state, &ctx); |
869e188a | 3195 | out: |
a5b8444e DV |
3196 | if (err != -EDEADLK) |
3197 | break; | |
3198 | ||
3199 | drm_modeset_backoff(&ctx); | |
3200 | } | |
3201 | ||
6d281b1f | 3202 | drm_atomic_state_put(state); |
a5b8444e DV |
3203 | drm_modeset_drop_locks(&ctx); |
3204 | drm_modeset_acquire_fini(&ctx); | |
14942760 TR |
3205 | |
3206 | return err; | |
3207 | } | |
3208 | EXPORT_SYMBOL(drm_atomic_helper_resume); | |
3209 | ||
8c3a8181 DV |
3210 | static int page_flip_common(struct drm_atomic_state *state, |
3211 | struct drm_crtc *crtc, | |
3212 | struct drm_framebuffer *fb, | |
3213 | struct drm_pending_vblank_event *event, | |
3214 | uint32_t flags) | |
f869a6ec AG |
3215 | { |
3216 | struct drm_plane *plane = crtc->primary; | |
3217 | struct drm_plane_state *plane_state; | |
3218 | struct drm_crtc_state *crtc_state; | |
3219 | int ret = 0; | |
3220 | ||
3221 | crtc_state = drm_atomic_get_crtc_state(state, crtc); | |
3222 | if (IS_ERR(crtc_state)) | |
3223 | return PTR_ERR(crtc_state); | |
3224 | ||
3225 | crtc_state->event = event; | |
6cbe5c46 | 3226 | crtc_state->pageflip_flags = flags; |
f869a6ec AG |
3227 | |
3228 | plane_state = drm_atomic_get_plane_state(state, plane); | |
3229 | if (IS_ERR(plane_state)) | |
3230 | return PTR_ERR(plane_state); | |
3231 | ||
f869a6ec AG |
3232 | ret = drm_atomic_set_crtc_for_plane(plane_state, crtc); |
3233 | if (ret != 0) | |
3234 | return ret; | |
3235 | drm_atomic_set_fb_for_plane(plane_state, fb); | |
3236 | ||
3237 | /* Make sure we don't accidentally do a full modeset. */ | |
3238 | state->allow_modeset = false; | |
3239 | if (!crtc_state->active) { | |
6ac7c548 RK |
3240 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] disabled, rejecting legacy flip\n", |
3241 | crtc->base.id, crtc->name); | |
f869a6ec AG |
3242 | return -EINVAL; |
3243 | } | |
3244 | ||
3245 | return ret; | |
3246 | } | |
3247 | ||
8bc0f312 DV |
3248 | /** |
3249 | * drm_atomic_helper_page_flip - execute a legacy page flip | |
3250 | * @crtc: DRM crtc | |
3251 | * @fb: DRM framebuffer | |
3252 | * @event: optional DRM event to signal upon completion | |
3253 | * @flags: flip flags for non-vblank sync'ed updates | |
41292b1f | 3254 | * @ctx: lock acquisition context |
8bc0f312 | 3255 | * |
f869a6ec AG |
3256 | * Provides a default &drm_crtc_funcs.page_flip implementation |
3257 | * using the atomic driver interface. | |
8bc0f312 | 3258 | * |
8bc0f312 DV |
3259 | * Returns: |
3260 | * Returns 0 on success, negative errno numbers on failure. | |
f869a6ec AG |
3261 | * |
3262 | * See also: | |
3263 | * drm_atomic_helper_page_flip_target() | |
8bc0f312 DV |
3264 | */ |
3265 | int drm_atomic_helper_page_flip(struct drm_crtc *crtc, | |
3266 | struct drm_framebuffer *fb, | |
3267 | struct drm_pending_vblank_event *event, | |
41292b1f DV |
3268 | uint32_t flags, |
3269 | struct drm_modeset_acquire_ctx *ctx) | |
8bc0f312 DV |
3270 | { |
3271 | struct drm_plane *plane = crtc->primary; | |
3272 | struct drm_atomic_state *state; | |
8bc0f312 DV |
3273 | int ret = 0; |
3274 | ||
8bc0f312 DV |
3275 | state = drm_atomic_state_alloc(plane->dev); |
3276 | if (!state) | |
3277 | return -ENOMEM; | |
3278 | ||
043e7fb6 | 3279 | state->acquire_ctx = ctx; |
f869a6ec | 3280 | |
6cbe5c46 | 3281 | ret = page_flip_common(state, crtc, fb, event, flags); |
f869a6ec | 3282 | if (ret != 0) |
8bc0f312 | 3283 | goto fail; |
8bc0f312 | 3284 | |
f869a6ec | 3285 | ret = drm_atomic_nonblocking_commit(state); |
f869a6ec | 3286 | fail: |
f869a6ec AG |
3287 | drm_atomic_state_put(state); |
3288 | return ret; | |
f869a6ec AG |
3289 | } |
3290 | EXPORT_SYMBOL(drm_atomic_helper_page_flip); | |
3291 | ||
3292 | /** | |
3293 | * drm_atomic_helper_page_flip_target - do page flip on target vblank period. | |
3294 | * @crtc: DRM crtc | |
3295 | * @fb: DRM framebuffer | |
3296 | * @event: optional DRM event to signal upon completion | |
3297 | * @flags: flip flags for non-vblank sync'ed updates | |
3298 | * @target: specifying the target vblank period when the flip to take effect | |
41292b1f | 3299 | * @ctx: lock acquisition context |
f869a6ec AG |
3300 | * |
3301 | * Provides a default &drm_crtc_funcs.page_flip_target implementation. | |
3302 | * Similar to drm_atomic_helper_page_flip() with extra parameter to specify | |
3303 | * target vblank period to flip. | |
3304 | * | |
3305 | * Returns: | |
3306 | * Returns 0 on success, negative errno numbers on failure. | |
3307 | */ | |
8c3a8181 DV |
3308 | int drm_atomic_helper_page_flip_target(struct drm_crtc *crtc, |
3309 | struct drm_framebuffer *fb, | |
3310 | struct drm_pending_vblank_event *event, | |
3311 | uint32_t flags, | |
3312 | uint32_t target, | |
3313 | struct drm_modeset_acquire_ctx *ctx) | |
f869a6ec AG |
3314 | { |
3315 | struct drm_plane *plane = crtc->primary; | |
3316 | struct drm_atomic_state *state; | |
3317 | struct drm_crtc_state *crtc_state; | |
3318 | int ret = 0; | |
3319 | ||
f869a6ec AG |
3320 | state = drm_atomic_state_alloc(plane->dev); |
3321 | if (!state) | |
3322 | return -ENOMEM; | |
3323 | ||
043e7fb6 | 3324 | state->acquire_ctx = ctx; |
f869a6ec | 3325 | |
6cbe5c46 | 3326 | ret = page_flip_common(state, crtc, fb, event, flags); |
8bc0f312 DV |
3327 | if (ret != 0) |
3328 | goto fail; | |
8bc0f312 | 3329 | |
b4d93679 | 3330 | crtc_state = drm_atomic_get_new_crtc_state(state, crtc); |
f869a6ec | 3331 | if (WARN_ON(!crtc_state)) { |
4cba6850 DV |
3332 | ret = -EINVAL; |
3333 | goto fail; | |
3334 | } | |
f869a6ec | 3335 | crtc_state->target_vblank = target; |
4cba6850 | 3336 | |
b837ba0a | 3337 | ret = drm_atomic_nonblocking_commit(state); |
8bc0f312 | 3338 | fail: |
0853695c | 3339 | drm_atomic_state_put(state); |
8bc0f312 | 3340 | return ret; |
8bc0f312 | 3341 | } |
f869a6ec | 3342 | EXPORT_SYMBOL(drm_atomic_helper_page_flip_target); |
d461701c | 3343 | |
9ecb5498 | 3344 | /** |
6806cdf9 DV |
3345 | * drm_atomic_helper_best_encoder - Helper for |
3346 | * &drm_connector_helper_funcs.best_encoder callback | |
9ecb5498 NT |
3347 | * @connector: Connector control structure |
3348 | * | |
6806cdf9 | 3349 | * This is a &drm_connector_helper_funcs.best_encoder callback helper for |
9ecb5498 NT |
3350 | * connectors that support exactly 1 encoder, statically determined at driver |
3351 | * init time. | |
3352 | */ | |
3353 | struct drm_encoder * | |
3354 | drm_atomic_helper_best_encoder(struct drm_connector *connector) | |
3355 | { | |
3356 | WARN_ON(connector->encoder_ids[1]); | |
418da172 | 3357 | return drm_encoder_find(connector->dev, NULL, connector->encoder_ids[0]); |
9ecb5498 NT |
3358 | } |
3359 | EXPORT_SYMBOL(drm_atomic_helper_best_encoder); | |
3360 | ||
3150c7d0 DV |
3361 | /** |
3362 | * DOC: atomic state reset and initialization | |
3363 | * | |
3364 | * Both the drm core and the atomic helpers assume that there is always the full | |
3365 | * and correct atomic software state for all connectors, CRTCs and planes | |
3366 | * available. Which is a bit a problem on driver load and also after system | |
3367 | * suspend. One way to solve this is to have a hardware state read-out | |
3368 | * infrastructure which reconstructs the full software state (e.g. the i915 | |
3369 | * driver). | |
3370 | * | |
3371 | * The simpler solution is to just reset the software state to everything off, | |
3372 | * which is easiest to do by calling drm_mode_config_reset(). To facilitate this | |
3373 | * the atomic helpers provide default reset implementations for all hooks. | |
7f8ee3e5 DV |
3374 | * |
3375 | * On the upside the precise state tracking of atomic simplifies system suspend | |
3376 | * and resume a lot. For drivers using drm_mode_config_reset() a complete recipe | |
3377 | * is implemented in drm_atomic_helper_suspend() and drm_atomic_helper_resume(). | |
3378 | * For other drivers the building blocks are split out, see the documentation | |
3379 | * for these functions. | |
3150c7d0 DV |
3380 | */ |
3381 | ||
d461701c | 3382 | /** |
6806cdf9 | 3383 | * drm_atomic_helper_crtc_reset - default &drm_crtc_funcs.reset hook for CRTCs |
d461701c DV |
3384 | * @crtc: drm CRTC |
3385 | * | |
3386 | * Resets the atomic state for @crtc by freeing the state pointer (which might | |
3387 | * be NULL, e.g. at driver load time) and allocating a new empty state object. | |
3388 | */ | |
3389 | void drm_atomic_helper_crtc_reset(struct drm_crtc *crtc) | |
3390 | { | |
b0b5511b | 3391 | if (crtc->state) |
ec2dc6a0 | 3392 | __drm_atomic_helper_crtc_destroy_state(crtc->state); |
b0b5511b | 3393 | |
d461701c DV |
3394 | kfree(crtc->state); |
3395 | crtc->state = kzalloc(sizeof(*crtc->state), GFP_KERNEL); | |
07cc0ef6 DV |
3396 | |
3397 | if (crtc->state) | |
3398 | crtc->state->crtc = crtc; | |
d461701c DV |
3399 | } |
3400 | EXPORT_SYMBOL(drm_atomic_helper_crtc_reset); | |
3401 | ||
f5e7840b TR |
3402 | /** |
3403 | * __drm_atomic_helper_crtc_duplicate_state - copy atomic CRTC state | |
3404 | * @crtc: CRTC object | |
3405 | * @state: atomic CRTC state | |
3406 | * | |
3407 | * Copies atomic state from a CRTC's current state and resets inferred values. | |
3408 | * This is useful for drivers that subclass the CRTC state. | |
3409 | */ | |
3410 | void __drm_atomic_helper_crtc_duplicate_state(struct drm_crtc *crtc, | |
3411 | struct drm_crtc_state *state) | |
3412 | { | |
3413 | memcpy(state, crtc->state, sizeof(*state)); | |
3414 | ||
99cf4a29 | 3415 | if (state->mode_blob) |
6472e509 | 3416 | drm_property_blob_get(state->mode_blob); |
5488dc16 | 3417 | if (state->degamma_lut) |
6472e509 | 3418 | drm_property_blob_get(state->degamma_lut); |
5488dc16 | 3419 | if (state->ctm) |
6472e509 | 3420 | drm_property_blob_get(state->ctm); |
5488dc16 | 3421 | if (state->gamma_lut) |
6472e509 | 3422 | drm_property_blob_get(state->gamma_lut); |
f5e7840b TR |
3423 | state->mode_changed = false; |
3424 | state->active_changed = false; | |
3425 | state->planes_changed = false; | |
fc596660 | 3426 | state->connectors_changed = false; |
5488dc16 | 3427 | state->color_mgmt_changed = false; |
44d1240d | 3428 | state->zpos_changed = false; |
163bcc2c | 3429 | state->commit = NULL; |
f5e7840b | 3430 | state->event = NULL; |
6cbe5c46 | 3431 | state->pageflip_flags = 0; |
f5e7840b TR |
3432 | } |
3433 | EXPORT_SYMBOL(__drm_atomic_helper_crtc_duplicate_state); | |
3434 | ||
d461701c DV |
3435 | /** |
3436 | * drm_atomic_helper_crtc_duplicate_state - default state duplicate hook | |
3437 | * @crtc: drm CRTC | |
3438 | * | |
3439 | * Default CRTC state duplicate hook for drivers which don't have their own | |
3440 | * subclassed CRTC state structure. | |
3441 | */ | |
3442 | struct drm_crtc_state * | |
3443 | drm_atomic_helper_crtc_duplicate_state(struct drm_crtc *crtc) | |
3444 | { | |
3445 | struct drm_crtc_state *state; | |
3446 | ||
3447 | if (WARN_ON(!crtc->state)) | |
3448 | return NULL; | |
3449 | ||
f5e7840b TR |
3450 | state = kmalloc(sizeof(*state), GFP_KERNEL); |
3451 | if (state) | |
3452 | __drm_atomic_helper_crtc_duplicate_state(crtc, state); | |
d461701c DV |
3453 | |
3454 | return state; | |
3455 | } | |
3456 | EXPORT_SYMBOL(drm_atomic_helper_crtc_duplicate_state); | |
3457 | ||
f5e7840b TR |
3458 | /** |
3459 | * __drm_atomic_helper_crtc_destroy_state - release CRTC state | |
f5e7840b TR |
3460 | * @state: CRTC state object to release |
3461 | * | |
3462 | * Releases all resources stored in the CRTC state without actually freeing | |
3463 | * the memory of the CRTC state. This is useful for drivers that subclass the | |
3464 | * CRTC state. | |
3465 | */ | |
ec2dc6a0 | 3466 | void __drm_atomic_helper_crtc_destroy_state(struct drm_crtc_state *state) |
f5e7840b | 3467 | { |
163bcc2c | 3468 | if (state->commit) { |
1c6ceeee LSL |
3469 | /* |
3470 | * In the event that a non-blocking commit returns | |
3471 | * -ERESTARTSYS before the commit_tail work is queued, we will | |
3472 | * have an extra reference to the commit object. Release it, if | |
3473 | * the event has not been consumed by the worker. | |
3474 | * | |
3475 | * state->event may be freed, so we can't directly look at | |
3476 | * state->event->base.completion. | |
3477 | */ | |
3478 | if (state->event && state->commit->abort_completion) | |
3479 | drm_crtc_commit_put(state->commit); | |
3480 | ||
163bcc2c ML |
3481 | kfree(state->commit->event); |
3482 | state->commit->event = NULL; | |
1c6ceeee | 3483 | |
163bcc2c ML |
3484 | drm_crtc_commit_put(state->commit); |
3485 | } | |
3486 | ||
6472e509 TR |
3487 | drm_property_blob_put(state->mode_blob); |
3488 | drm_property_blob_put(state->degamma_lut); | |
3489 | drm_property_blob_put(state->ctm); | |
3490 | drm_property_blob_put(state->gamma_lut); | |
f5e7840b TR |
3491 | } |
3492 | EXPORT_SYMBOL(__drm_atomic_helper_crtc_destroy_state); | |
3493 | ||
d461701c DV |
3494 | /** |
3495 | * drm_atomic_helper_crtc_destroy_state - default state destroy hook | |
3496 | * @crtc: drm CRTC | |
3497 | * @state: CRTC state object to release | |
3498 | * | |
3499 | * Default CRTC state destroy hook for drivers which don't have their own | |
3500 | * subclassed CRTC state structure. | |
3501 | */ | |
3502 | void drm_atomic_helper_crtc_destroy_state(struct drm_crtc *crtc, | |
3503 | struct drm_crtc_state *state) | |
3504 | { | |
ec2dc6a0 | 3505 | __drm_atomic_helper_crtc_destroy_state(state); |
d461701c DV |
3506 | kfree(state); |
3507 | } | |
3508 | EXPORT_SYMBOL(drm_atomic_helper_crtc_destroy_state); | |
3509 | ||
3510 | /** | |
6806cdf9 | 3511 | * drm_atomic_helper_plane_reset - default &drm_plane_funcs.reset hook for planes |
d461701c DV |
3512 | * @plane: drm plane |
3513 | * | |
3514 | * Resets the atomic state for @plane by freeing the state pointer (which might | |
3515 | * be NULL, e.g. at driver load time) and allocating a new empty state object. | |
3516 | */ | |
3517 | void drm_atomic_helper_plane_reset(struct drm_plane *plane) | |
3518 | { | |
b0b5511b | 3519 | if (plane->state) |
2f701695 | 3520 | __drm_atomic_helper_plane_destroy_state(plane->state); |
321ebf04 | 3521 | |
d461701c DV |
3522 | kfree(plane->state); |
3523 | plane->state = kzalloc(sizeof(*plane->state), GFP_KERNEL); | |
07cc0ef6 | 3524 | |
25aaa3a1 | 3525 | if (plane->state) { |
07cc0ef6 | 3526 | plane->state->plane = plane; |
c2c446ad | 3527 | plane->state->rotation = DRM_MODE_ROTATE_0; |
ae0e2826 MR |
3528 | |
3529 | /* Reset the alpha value to fully opaque if it matters */ | |
3530 | if (plane->alpha_property) | |
3531 | plane->state->alpha = plane->alpha_property->values[1]; | |
25aaa3a1 | 3532 | } |
d461701c DV |
3533 | } |
3534 | EXPORT_SYMBOL(drm_atomic_helper_plane_reset); | |
3535 | ||
f5e7840b TR |
3536 | /** |
3537 | * __drm_atomic_helper_plane_duplicate_state - copy atomic plane state | |
3538 | * @plane: plane object | |
3539 | * @state: atomic plane state | |
3540 | * | |
3541 | * Copies atomic state from a plane's current state. This is useful for | |
3542 | * drivers that subclass the plane state. | |
3543 | */ | |
3544 | void __drm_atomic_helper_plane_duplicate_state(struct drm_plane *plane, | |
3545 | struct drm_plane_state *state) | |
3546 | { | |
3547 | memcpy(state, plane->state, sizeof(*state)); | |
3548 | ||
3549 | if (state->fb) | |
a4a69da0 | 3550 | drm_framebuffer_get(state->fb); |
96260142 GP |
3551 | |
3552 | state->fence = NULL; | |
21a01abb | 3553 | state->commit = NULL; |
f5e7840b TR |
3554 | } |
3555 | EXPORT_SYMBOL(__drm_atomic_helper_plane_duplicate_state); | |
3556 | ||
d461701c DV |
3557 | /** |
3558 | * drm_atomic_helper_plane_duplicate_state - default state duplicate hook | |
3559 | * @plane: drm plane | |
3560 | * | |
3561 | * Default plane state duplicate hook for drivers which don't have their own | |
3562 | * subclassed plane state structure. | |
3563 | */ | |
3564 | struct drm_plane_state * | |
3565 | drm_atomic_helper_plane_duplicate_state(struct drm_plane *plane) | |
3566 | { | |
321ebf04 DV |
3567 | struct drm_plane_state *state; |
3568 | ||
d461701c DV |
3569 | if (WARN_ON(!plane->state)) |
3570 | return NULL; | |
3571 | ||
f5e7840b TR |
3572 | state = kmalloc(sizeof(*state), GFP_KERNEL); |
3573 | if (state) | |
3574 | __drm_atomic_helper_plane_duplicate_state(plane, state); | |
321ebf04 DV |
3575 | |
3576 | return state; | |
d461701c DV |
3577 | } |
3578 | EXPORT_SYMBOL(drm_atomic_helper_plane_duplicate_state); | |
3579 | ||
f5e7840b TR |
3580 | /** |
3581 | * __drm_atomic_helper_plane_destroy_state - release plane state | |
f5e7840b TR |
3582 | * @state: plane state object to release |
3583 | * | |
3584 | * Releases all resources stored in the plane state without actually freeing | |
3585 | * the memory of the plane state. This is useful for drivers that subclass the | |
3586 | * plane state. | |
3587 | */ | |
2f701695 | 3588 | void __drm_atomic_helper_plane_destroy_state(struct drm_plane_state *state) |
f5e7840b TR |
3589 | { |
3590 | if (state->fb) | |
a4a69da0 | 3591 | drm_framebuffer_put(state->fb); |
96260142 GP |
3592 | |
3593 | if (state->fence) | |
3594 | dma_fence_put(state->fence); | |
21a01abb ML |
3595 | |
3596 | if (state->commit) | |
3597 | drm_crtc_commit_put(state->commit); | |
f5e7840b TR |
3598 | } |
3599 | EXPORT_SYMBOL(__drm_atomic_helper_plane_destroy_state); | |
3600 | ||
d461701c DV |
3601 | /** |
3602 | * drm_atomic_helper_plane_destroy_state - default state destroy hook | |
3603 | * @plane: drm plane | |
3604 | * @state: plane state object to release | |
3605 | * | |
3606 | * Default plane state destroy hook for drivers which don't have their own | |
3607 | * subclassed plane state structure. | |
3608 | */ | |
3609 | void drm_atomic_helper_plane_destroy_state(struct drm_plane *plane, | |
321ebf04 | 3610 | struct drm_plane_state *state) |
d461701c | 3611 | { |
2f701695 | 3612 | __drm_atomic_helper_plane_destroy_state(state); |
d461701c DV |
3613 | kfree(state); |
3614 | } | |
3615 | EXPORT_SYMBOL(drm_atomic_helper_plane_destroy_state); | |
3616 | ||
4cd39917 ML |
3617 | /** |
3618 | * __drm_atomic_helper_connector_reset - reset state on connector | |
3619 | * @connector: drm connector | |
3620 | * @conn_state: connector state to assign | |
3621 | * | |
3622 | * Initializes the newly allocated @conn_state and assigns it to | |
6806cdf9 DV |
3623 | * the &drm_conector->state pointer of @connector, usually required when |
3624 | * initializing the drivers or when called from the &drm_connector_funcs.reset | |
3625 | * hook. | |
4cd39917 ML |
3626 | * |
3627 | * This is useful for drivers that subclass the connector state. | |
3628 | */ | |
3629 | void | |
3630 | __drm_atomic_helper_connector_reset(struct drm_connector *connector, | |
3631 | struct drm_connector_state *conn_state) | |
3632 | { | |
3633 | if (conn_state) | |
3634 | conn_state->connector = connector; | |
3635 | ||
3636 | connector->state = conn_state; | |
3637 | } | |
3638 | EXPORT_SYMBOL(__drm_atomic_helper_connector_reset); | |
3639 | ||
d461701c | 3640 | /** |
6806cdf9 | 3641 | * drm_atomic_helper_connector_reset - default &drm_connector_funcs.reset hook for connectors |
d461701c DV |
3642 | * @connector: drm connector |
3643 | * | |
3644 | * Resets the atomic state for @connector by freeing the state pointer (which | |
3645 | * might be NULL, e.g. at driver load time) and allocating a new empty state | |
3646 | * object. | |
3647 | */ | |
3648 | void drm_atomic_helper_connector_reset(struct drm_connector *connector) | |
3649 | { | |
4cd39917 ML |
3650 | struct drm_connector_state *conn_state = |
3651 | kzalloc(sizeof(*conn_state), GFP_KERNEL); | |
07cc0ef6 | 3652 | |
b0b5511b | 3653 | if (connector->state) |
fabd9106 | 3654 | __drm_atomic_helper_connector_destroy_state(connector->state); |
b0b5511b | 3655 | |
4cd39917 ML |
3656 | kfree(connector->state); |
3657 | __drm_atomic_helper_connector_reset(connector, conn_state); | |
d461701c DV |
3658 | } |
3659 | EXPORT_SYMBOL(drm_atomic_helper_connector_reset); | |
3660 | ||
f5e7840b TR |
3661 | /** |
3662 | * __drm_atomic_helper_connector_duplicate_state - copy atomic connector state | |
3663 | * @connector: connector object | |
3664 | * @state: atomic connector state | |
3665 | * | |
3666 | * Copies atomic state from a connector's current state. This is useful for | |
3667 | * drivers that subclass the connector state. | |
3668 | */ | |
3669 | void | |
3670 | __drm_atomic_helper_connector_duplicate_state(struct drm_connector *connector, | |
3671 | struct drm_connector_state *state) | |
3672 | { | |
3673 | memcpy(state, connector->state, sizeof(*state)); | |
d2307dea | 3674 | if (state->crtc) |
ad093607 | 3675 | drm_connector_get(connector); |
21a01abb | 3676 | state->commit = NULL; |
935774cd BS |
3677 | |
3678 | /* Don't copy over a writeback job, they are used only once */ | |
3679 | state->writeback_job = NULL; | |
f5e7840b TR |
3680 | } |
3681 | EXPORT_SYMBOL(__drm_atomic_helper_connector_duplicate_state); | |
3682 | ||
d461701c DV |
3683 | /** |
3684 | * drm_atomic_helper_connector_duplicate_state - default state duplicate hook | |
3685 | * @connector: drm connector | |
3686 | * | |
3687 | * Default connector state duplicate hook for drivers which don't have their own | |
3688 | * subclassed connector state structure. | |
3689 | */ | |
3690 | struct drm_connector_state * | |
3691 | drm_atomic_helper_connector_duplicate_state(struct drm_connector *connector) | |
3692 | { | |
f5e7840b TR |
3693 | struct drm_connector_state *state; |
3694 | ||
d461701c DV |
3695 | if (WARN_ON(!connector->state)) |
3696 | return NULL; | |
3697 | ||
f5e7840b TR |
3698 | state = kmalloc(sizeof(*state), GFP_KERNEL); |
3699 | if (state) | |
3700 | __drm_atomic_helper_connector_duplicate_state(connector, state); | |
3701 | ||
3702 | return state; | |
d461701c DV |
3703 | } |
3704 | EXPORT_SYMBOL(drm_atomic_helper_connector_duplicate_state); | |
3705 | ||
397fd77c TR |
3706 | /** |
3707 | * drm_atomic_helper_duplicate_state - duplicate an atomic state object | |
3708 | * @dev: DRM device | |
3709 | * @ctx: lock acquisition context | |
3710 | * | |
3711 | * Makes a copy of the current atomic state by looping over all objects and | |
14942760 TR |
3712 | * duplicating their respective states. This is used for example by suspend/ |
3713 | * resume support code to save the state prior to suspend such that it can | |
3714 | * be restored upon resume. | |
397fd77c TR |
3715 | * |
3716 | * Note that this treats atomic state as persistent between save and restore. | |
3717 | * Drivers must make sure that this is possible and won't result in confusion | |
3718 | * or erroneous behaviour. | |
3719 | * | |
3720 | * Note that if callers haven't already acquired all modeset locks this might | |
3721 | * return -EDEADLK, which must be handled by calling drm_modeset_backoff(). | |
3722 | * | |
3723 | * Returns: | |
3724 | * A pointer to the copy of the atomic state object on success or an | |
3725 | * ERR_PTR()-encoded error code on failure. | |
14942760 TR |
3726 | * |
3727 | * See also: | |
3728 | * drm_atomic_helper_suspend(), drm_atomic_helper_resume() | |
397fd77c TR |
3729 | */ |
3730 | struct drm_atomic_state * | |
3731 | drm_atomic_helper_duplicate_state(struct drm_device *dev, | |
3732 | struct drm_modeset_acquire_ctx *ctx) | |
3733 | { | |
3734 | struct drm_atomic_state *state; | |
3735 | struct drm_connector *conn; | |
c36a3254 | 3736 | struct drm_connector_list_iter conn_iter; |
397fd77c TR |
3737 | struct drm_plane *plane; |
3738 | struct drm_crtc *crtc; | |
3739 | int err = 0; | |
3740 | ||
3741 | state = drm_atomic_state_alloc(dev); | |
3742 | if (!state) | |
3743 | return ERR_PTR(-ENOMEM); | |
3744 | ||
3745 | state->acquire_ctx = ctx; | |
3746 | ||
3747 | drm_for_each_crtc(crtc, dev) { | |
3748 | struct drm_crtc_state *crtc_state; | |
3749 | ||
3750 | crtc_state = drm_atomic_get_crtc_state(state, crtc); | |
3751 | if (IS_ERR(crtc_state)) { | |
3752 | err = PTR_ERR(crtc_state); | |
3753 | goto free; | |
3754 | } | |
3755 | } | |
3756 | ||
3757 | drm_for_each_plane(plane, dev) { | |
3758 | struct drm_plane_state *plane_state; | |
3759 | ||
3760 | plane_state = drm_atomic_get_plane_state(state, plane); | |
3761 | if (IS_ERR(plane_state)) { | |
3762 | err = PTR_ERR(plane_state); | |
3763 | goto free; | |
3764 | } | |
3765 | } | |
3766 | ||
b982dab1 | 3767 | drm_connector_list_iter_begin(dev, &conn_iter); |
c36a3254 | 3768 | drm_for_each_connector_iter(conn, &conn_iter) { |
397fd77c TR |
3769 | struct drm_connector_state *conn_state; |
3770 | ||
3771 | conn_state = drm_atomic_get_connector_state(state, conn); | |
3772 | if (IS_ERR(conn_state)) { | |
3773 | err = PTR_ERR(conn_state); | |
b982dab1 | 3774 | drm_connector_list_iter_end(&conn_iter); |
397fd77c TR |
3775 | goto free; |
3776 | } | |
3777 | } | |
b982dab1 | 3778 | drm_connector_list_iter_end(&conn_iter); |
397fd77c TR |
3779 | |
3780 | /* clear the acquire context so that it isn't accidentally reused */ | |
3781 | state->acquire_ctx = NULL; | |
3782 | ||
3783 | free: | |
3784 | if (err < 0) { | |
0853695c | 3785 | drm_atomic_state_put(state); |
397fd77c TR |
3786 | state = ERR_PTR(err); |
3787 | } | |
3788 | ||
3789 | return state; | |
3790 | } | |
3791 | EXPORT_SYMBOL(drm_atomic_helper_duplicate_state); | |
3792 | ||
f5e7840b TR |
3793 | /** |
3794 | * __drm_atomic_helper_connector_destroy_state - release connector state | |
f5e7840b TR |
3795 | * @state: connector state object to release |
3796 | * | |
3797 | * Releases all resources stored in the connector state without actually | |
3798 | * freeing the memory of the connector state. This is useful for drivers that | |
3799 | * subclass the connector state. | |
3800 | */ | |
3801 | void | |
fabd9106 | 3802 | __drm_atomic_helper_connector_destroy_state(struct drm_connector_state *state) |
f5e7840b | 3803 | { |
d2307dea | 3804 | if (state->crtc) |
ad093607 | 3805 | drm_connector_put(state->connector); |
21a01abb ML |
3806 | |
3807 | if (state->commit) | |
3808 | drm_crtc_commit_put(state->commit); | |
f5e7840b TR |
3809 | } |
3810 | EXPORT_SYMBOL(__drm_atomic_helper_connector_destroy_state); | |
3811 | ||
d461701c DV |
3812 | /** |
3813 | * drm_atomic_helper_connector_destroy_state - default state destroy hook | |
3814 | * @connector: drm connector | |
3815 | * @state: connector state object to release | |
3816 | * | |
3817 | * Default connector state destroy hook for drivers which don't have their own | |
3818 | * subclassed connector state structure. | |
3819 | */ | |
3820 | void drm_atomic_helper_connector_destroy_state(struct drm_connector *connector, | |
3821 | struct drm_connector_state *state) | |
3822 | { | |
fabd9106 | 3823 | __drm_atomic_helper_connector_destroy_state(state); |
d461701c DV |
3824 | kfree(state); |
3825 | } | |
3826 | EXPORT_SYMBOL(drm_atomic_helper_connector_destroy_state); | |
5488dc16 LL |
3827 | |
3828 | /** | |
3829 | * drm_atomic_helper_legacy_gamma_set - set the legacy gamma correction table | |
3830 | * @crtc: CRTC object | |
3831 | * @red: red correction table | |
3832 | * @green: green correction table | |
3833 | * @blue: green correction table | |
5488dc16 | 3834 | * @size: size of the tables |
6d124ff8 | 3835 | * @ctx: lock acquire context |
5488dc16 LL |
3836 | * |
3837 | * Implements support for legacy gamma correction table for drivers | |
3838 | * that support color management through the DEGAMMA_LUT/GAMMA_LUT | |
2e38178e DV |
3839 | * properties. See drm_crtc_enable_color_mgmt() and the containing chapter for |
3840 | * how the atomic color management and gamma tables work. | |
5488dc16 | 3841 | */ |
7ea77283 ML |
3842 | int drm_atomic_helper_legacy_gamma_set(struct drm_crtc *crtc, |
3843 | u16 *red, u16 *green, u16 *blue, | |
6d124ff8 DV |
3844 | uint32_t size, |
3845 | struct drm_modeset_acquire_ctx *ctx) | |
5488dc16 LL |
3846 | { |
3847 | struct drm_device *dev = crtc->dev; | |
5488dc16 LL |
3848 | struct drm_atomic_state *state; |
3849 | struct drm_crtc_state *crtc_state; | |
3850 | struct drm_property_blob *blob = NULL; | |
3851 | struct drm_color_lut *blob_data; | |
3852 | int i, ret = 0; | |
e2b9dd30 | 3853 | bool replaced; |
5488dc16 LL |
3854 | |
3855 | state = drm_atomic_state_alloc(crtc->dev); | |
3856 | if (!state) | |
7ea77283 | 3857 | return -ENOMEM; |
5488dc16 LL |
3858 | |
3859 | blob = drm_property_create_blob(dev, | |
3860 | sizeof(struct drm_color_lut) * size, | |
3861 | NULL); | |
562c5b4d LL |
3862 | if (IS_ERR(blob)) { |
3863 | ret = PTR_ERR(blob); | |
c1f415c9 | 3864 | blob = NULL; |
5488dc16 LL |
3865 | goto fail; |
3866 | } | |
3867 | ||
3868 | /* Prepare GAMMA_LUT with the legacy values. */ | |
11b83e3f | 3869 | blob_data = blob->data; |
5488dc16 LL |
3870 | for (i = 0; i < size; i++) { |
3871 | blob_data[i].red = red[i]; | |
3872 | blob_data[i].green = green[i]; | |
3873 | blob_data[i].blue = blue[i]; | |
3874 | } | |
3875 | ||
3a09f737 | 3876 | state->acquire_ctx = ctx; |
5488dc16 LL |
3877 | crtc_state = drm_atomic_get_crtc_state(state, crtc); |
3878 | if (IS_ERR(crtc_state)) { | |
3879 | ret = PTR_ERR(crtc_state); | |
3880 | goto fail; | |
3881 | } | |
3882 | ||
3883 | /* Reset DEGAMMA_LUT and CTM properties. */ | |
e2b9dd30 PR |
3884 | replaced = drm_property_replace_blob(&crtc_state->degamma_lut, NULL); |
3885 | replaced |= drm_property_replace_blob(&crtc_state->ctm, NULL); | |
3886 | replaced |= drm_property_replace_blob(&crtc_state->gamma_lut, blob); | |
3887 | crtc_state->color_mgmt_changed |= replaced; | |
5488dc16 LL |
3888 | |
3889 | ret = drm_atomic_commit(state); | |
5488dc16 | 3890 | |
3a09f737 | 3891 | fail: |
0853695c | 3892 | drm_atomic_state_put(state); |
6472e509 | 3893 | drm_property_blob_put(blob); |
7ea77283 | 3894 | return ret; |
5488dc16 LL |
3895 | } |
3896 | EXPORT_SYMBOL(drm_atomic_helper_legacy_gamma_set); | |
a4370c77 VS |
3897 | |
3898 | /** | |
3899 | * __drm_atomic_helper_private_duplicate_state - copy atomic private state | |
3900 | * @obj: CRTC object | |
3901 | * @state: new private object state | |
3902 | * | |
3903 | * Copies atomic state from a private objects's current state and resets inferred values. | |
3904 | * This is useful for drivers that subclass the private state. | |
3905 | */ | |
3906 | void __drm_atomic_helper_private_obj_duplicate_state(struct drm_private_obj *obj, | |
3907 | struct drm_private_state *state) | |
3908 | { | |
3909 | memcpy(state, obj->state, sizeof(*state)); | |
3910 | } | |
3911 | EXPORT_SYMBOL(__drm_atomic_helper_private_obj_duplicate_state); |