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c2fcd274 DV |
1 | /* |
2 | * Copyright (C) 2014 Red Hat | |
3 | * Copyright (C) 2014 Intel Corp. | |
4 | * | |
5 | * Permission is hereby granted, free of charge, to any person obtaining a | |
6 | * copy of this software and associated documentation files (the "Software"), | |
7 | * to deal in the Software without restriction, including without limitation | |
8 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
9 | * and/or sell copies of the Software, and to permit persons to whom the | |
10 | * Software is furnished to do so, subject to the following conditions: | |
11 | * | |
12 | * The above copyright notice and this permission notice shall be included in | |
13 | * all copies or substantial portions of the Software. | |
14 | * | |
15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
18 | * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR | |
19 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, | |
20 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR | |
21 | * OTHER DEALINGS IN THE SOFTWARE. | |
22 | * | |
23 | * Authors: | |
24 | * Rob Clark <robdclark@gmail.com> | |
25 | * Daniel Vetter <daniel.vetter@ffwll.ch> | |
26 | */ | |
27 | ||
28 | #include <drm/drmP.h> | |
29 | #include <drm/drm_atomic.h> | |
30 | #include <drm/drm_plane_helper.h> | |
31 | #include <drm/drm_crtc_helper.h> | |
623369e5 | 32 | #include <drm/drm_atomic_helper.h> |
f54d1867 | 33 | #include <linux/dma-fence.h> |
c2fcd274 | 34 | |
44d1240d MS |
35 | #include "drm_crtc_internal.h" |
36 | ||
3150c7d0 DV |
37 | /** |
38 | * DOC: overview | |
39 | * | |
40 | * This helper library provides implementations of check and commit functions on | |
41 | * top of the CRTC modeset helper callbacks and the plane helper callbacks. It | |
42 | * also provides convenience implementations for the atomic state handling | |
43 | * callbacks for drivers which don't need to subclass the drm core structures to | |
44 | * add their own additional internal state. | |
45 | * | |
46 | * This library also provides default implementations for the check callback in | |
26196f7e DV |
47 | * drm_atomic_helper_check() and for the commit callback with |
48 | * drm_atomic_helper_commit(). But the individual stages and callbacks are | |
49 | * exposed to allow drivers to mix and match and e.g. use the plane helpers only | |
3150c7d0 DV |
50 | * together with a driver private modeset implementation. |
51 | * | |
52 | * This library also provides implementations for all the legacy driver | |
26196f7e DV |
53 | * interfaces on top of the atomic interface. See drm_atomic_helper_set_config(), |
54 | * drm_atomic_helper_disable_plane(), drm_atomic_helper_disable_plane() and the | |
3150c7d0 DV |
55 | * various functions to implement set_property callbacks. New drivers must not |
56 | * implement these functions themselves but must use the provided helpers. | |
092d01da DV |
57 | * |
58 | * The atomic helper uses the same function table structures as all other | |
ea0dd85a DV |
59 | * modesetting helpers. See the documentation for &struct drm_crtc_helper_funcs, |
60 | * struct &drm_encoder_helper_funcs and &struct drm_connector_helper_funcs. It | |
61 | * also shares the &struct drm_plane_helper_funcs function table with the plane | |
092d01da | 62 | * helpers. |
3150c7d0 | 63 | */ |
c2fcd274 DV |
64 | static void |
65 | drm_atomic_helper_plane_changed(struct drm_atomic_state *state, | |
415c3ac3 | 66 | struct drm_plane_state *old_plane_state, |
c2fcd274 DV |
67 | struct drm_plane_state *plane_state, |
68 | struct drm_plane *plane) | |
69 | { | |
70 | struct drm_crtc_state *crtc_state; | |
71 | ||
415c3ac3 | 72 | if (old_plane_state->crtc) { |
b4d93679 ML |
73 | crtc_state = drm_atomic_get_new_crtc_state(state, |
74 | old_plane_state->crtc); | |
c2fcd274 DV |
75 | |
76 | if (WARN_ON(!crtc_state)) | |
77 | return; | |
78 | ||
79 | crtc_state->planes_changed = true; | |
80 | } | |
81 | ||
82 | if (plane_state->crtc) { | |
b4d93679 | 83 | crtc_state = drm_atomic_get_new_crtc_state(state, plane_state->crtc); |
c2fcd274 DV |
84 | |
85 | if (WARN_ON(!crtc_state)) | |
86 | return; | |
87 | ||
88 | crtc_state->planes_changed = true; | |
89 | } | |
90 | } | |
91 | ||
8248b65d ML |
92 | static int handle_conflicting_encoders(struct drm_atomic_state *state, |
93 | bool disable_conflicting_encoders) | |
97ac3204 | 94 | { |
415c3ac3 | 95 | struct drm_connector_state *new_conn_state; |
40616a26 | 96 | struct drm_connector *connector; |
c36a3254 | 97 | struct drm_connector_list_iter conn_iter; |
40616a26 ML |
98 | struct drm_encoder *encoder; |
99 | unsigned encoder_mask = 0; | |
c36a3254 | 100 | int i, ret = 0; |
97ac3204 | 101 | |
8248b65d ML |
102 | /* |
103 | * First loop, find all newly assigned encoders from the connectors | |
104 | * part of the state. If the same encoder is assigned to multiple | |
105 | * connectors bail out. | |
106 | */ | |
415c3ac3 | 107 | for_each_new_connector_in_state(state, connector, new_conn_state, i) { |
40616a26 ML |
108 | const struct drm_connector_helper_funcs *funcs = connector->helper_private; |
109 | struct drm_encoder *new_encoder; | |
110 | ||
415c3ac3 | 111 | if (!new_conn_state->crtc) |
97ac3204 DV |
112 | continue; |
113 | ||
40616a26 | 114 | if (funcs->atomic_best_encoder) |
415c3ac3 | 115 | new_encoder = funcs->atomic_best_encoder(connector, new_conn_state); |
a0909cc5 | 116 | else if (funcs->best_encoder) |
40616a26 | 117 | new_encoder = funcs->best_encoder(connector); |
a0909cc5 BB |
118 | else |
119 | new_encoder = drm_atomic_helper_best_encoder(connector); | |
40616a26 | 120 | |
8248b65d ML |
121 | if (new_encoder) { |
122 | if (encoder_mask & (1 << drm_encoder_index(new_encoder))) { | |
123 | DRM_DEBUG_ATOMIC("[ENCODER:%d:%s] on [CONNECTOR:%d:%s] already assigned\n", | |
124 | new_encoder->base.id, new_encoder->name, | |
125 | connector->base.id, connector->name); | |
126 | ||
127 | return -EINVAL; | |
128 | } | |
129 | ||
40616a26 | 130 | encoder_mask |= 1 << drm_encoder_index(new_encoder); |
8248b65d | 131 | } |
97ac3204 DV |
132 | } |
133 | ||
8248b65d ML |
134 | if (!encoder_mask) |
135 | return 0; | |
97ac3204 | 136 | |
8248b65d ML |
137 | /* |
138 | * Second loop, iterate over all connectors not part of the state. | |
139 | * | |
140 | * If a conflicting encoder is found and disable_conflicting_encoders | |
141 | * is not set, an error is returned. Userspace can provide a solution | |
142 | * through the atomic ioctl. | |
143 | * | |
144 | * If the flag is set conflicting connectors are removed from the crtc | |
145 | * and the crtc is disabled if no encoder is left. This preserves | |
146 | * compatibility with the legacy set_config behavior. | |
147 | */ | |
b982dab1 | 148 | drm_connector_list_iter_begin(state->dev, &conn_iter); |
c36a3254 | 149 | drm_for_each_connector_iter(connector, &conn_iter) { |
40616a26 | 150 | struct drm_crtc_state *crtc_state; |
623369e5 | 151 | |
b4d93679 | 152 | if (drm_atomic_get_new_connector_state(state, connector)) |
40616a26 | 153 | continue; |
623369e5 | 154 | |
40616a26 ML |
155 | encoder = connector->state->best_encoder; |
156 | if (!encoder || !(encoder_mask & (1 << drm_encoder_index(encoder)))) | |
623369e5 DV |
157 | continue; |
158 | ||
8248b65d ML |
159 | if (!disable_conflicting_encoders) { |
160 | DRM_DEBUG_ATOMIC("[ENCODER:%d:%s] in use on [CRTC:%d:%s] by [CONNECTOR:%d:%s]\n", | |
161 | encoder->base.id, encoder->name, | |
162 | connector->state->crtc->base.id, | |
163 | connector->state->crtc->name, | |
164 | connector->base.id, connector->name); | |
c36a3254 DV |
165 | ret = -EINVAL; |
166 | goto out; | |
8248b65d ML |
167 | } |
168 | ||
415c3ac3 ML |
169 | new_conn_state = drm_atomic_get_connector_state(state, connector); |
170 | if (IS_ERR(new_conn_state)) { | |
171 | ret = PTR_ERR(new_conn_state); | |
c36a3254 DV |
172 | goto out; |
173 | } | |
40616a26 ML |
174 | |
175 | DRM_DEBUG_ATOMIC("[ENCODER:%d:%s] in use on [CRTC:%d:%s], disabling [CONNECTOR:%d:%s]\n", | |
176 | encoder->base.id, encoder->name, | |
415c3ac3 | 177 | new_conn_state->crtc->base.id, new_conn_state->crtc->name, |
40616a26 ML |
178 | connector->base.id, connector->name); |
179 | ||
b4d93679 | 180 | crtc_state = drm_atomic_get_new_crtc_state(state, new_conn_state->crtc); |
40616a26 | 181 | |
415c3ac3 | 182 | ret = drm_atomic_set_crtc_for_connector(new_conn_state, NULL); |
40616a26 | 183 | if (ret) |
c36a3254 | 184 | goto out; |
40616a26 ML |
185 | |
186 | if (!crtc_state->connector_mask) { | |
187 | ret = drm_atomic_set_mode_prop_for_crtc(crtc_state, | |
188 | NULL); | |
189 | if (ret < 0) | |
c36a3254 | 190 | goto out; |
40616a26 ML |
191 | |
192 | crtc_state->active = false; | |
193 | } | |
623369e5 | 194 | } |
c36a3254 | 195 | out: |
b982dab1 | 196 | drm_connector_list_iter_end(&conn_iter); |
623369e5 | 197 | |
c36a3254 | 198 | return ret; |
623369e5 DV |
199 | } |
200 | ||
e87a52b3 ML |
201 | static void |
202 | set_best_encoder(struct drm_atomic_state *state, | |
203 | struct drm_connector_state *conn_state, | |
204 | struct drm_encoder *encoder) | |
205 | { | |
206 | struct drm_crtc_state *crtc_state; | |
207 | struct drm_crtc *crtc; | |
208 | ||
209 | if (conn_state->best_encoder) { | |
210 | /* Unset the encoder_mask in the old crtc state. */ | |
211 | crtc = conn_state->connector->state->crtc; | |
212 | ||
213 | /* A NULL crtc is an error here because we should have | |
214 | * duplicated a NULL best_encoder when crtc was NULL. | |
215 | * As an exception restoring duplicated atomic state | |
216 | * during resume is allowed, so don't warn when | |
217 | * best_encoder is equal to encoder we intend to set. | |
218 | */ | |
219 | WARN_ON(!crtc && encoder != conn_state->best_encoder); | |
220 | if (crtc) { | |
b4d93679 | 221 | crtc_state = drm_atomic_get_new_crtc_state(state, crtc); |
e87a52b3 ML |
222 | |
223 | crtc_state->encoder_mask &= | |
224 | ~(1 << drm_encoder_index(conn_state->best_encoder)); | |
225 | } | |
226 | } | |
227 | ||
228 | if (encoder) { | |
229 | crtc = conn_state->crtc; | |
230 | WARN_ON(!crtc); | |
231 | if (crtc) { | |
b4d93679 | 232 | crtc_state = drm_atomic_get_new_crtc_state(state, crtc); |
e87a52b3 ML |
233 | |
234 | crtc_state->encoder_mask |= | |
235 | 1 << drm_encoder_index(encoder); | |
236 | } | |
237 | } | |
238 | ||
239 | conn_state->best_encoder = encoder; | |
240 | } | |
241 | ||
ec5aaa58 | 242 | static void |
623369e5 | 243 | steal_encoder(struct drm_atomic_state *state, |
ff19b786 | 244 | struct drm_encoder *encoder) |
623369e5 | 245 | { |
623369e5 DV |
246 | struct drm_crtc_state *crtc_state; |
247 | struct drm_connector *connector; | |
415c3ac3 | 248 | struct drm_connector_state *old_connector_state, *new_connector_state; |
ec5aaa58 | 249 | int i; |
623369e5 | 250 | |
415c3ac3 | 251 | for_each_oldnew_connector_in_state(state, connector, old_connector_state, new_connector_state, i) { |
ff19b786 | 252 | struct drm_crtc *encoder_crtc; |
623369e5 | 253 | |
415c3ac3 | 254 | if (new_connector_state->best_encoder != encoder) |
623369e5 DV |
255 | continue; |
256 | ||
415c3ac3 | 257 | encoder_crtc = old_connector_state->crtc; |
623369e5 | 258 | |
ff19b786 ML |
259 | DRM_DEBUG_ATOMIC("[ENCODER:%d:%s] in use on [CRTC:%d:%s], stealing it\n", |
260 | encoder->base.id, encoder->name, | |
261 | encoder_crtc->base.id, encoder_crtc->name); | |
e87a52b3 | 262 | |
415c3ac3 | 263 | set_best_encoder(state, new_connector_state, NULL); |
623369e5 | 264 | |
b4d93679 | 265 | crtc_state = drm_atomic_get_new_crtc_state(state, encoder_crtc); |
ff19b786 ML |
266 | crtc_state->connectors_changed = true; |
267 | ||
ec5aaa58 | 268 | return; |
623369e5 | 269 | } |
623369e5 DV |
270 | } |
271 | ||
272 | static int | |
9459545b ML |
273 | update_connector_routing(struct drm_atomic_state *state, |
274 | struct drm_connector *connector, | |
415c3ac3 ML |
275 | struct drm_connector_state *old_connector_state, |
276 | struct drm_connector_state *new_connector_state) | |
623369e5 | 277 | { |
b5ceff20 | 278 | const struct drm_connector_helper_funcs *funcs; |
623369e5 | 279 | struct drm_encoder *new_encoder; |
623369e5 | 280 | struct drm_crtc_state *crtc_state; |
623369e5 | 281 | |
17a38d9c DV |
282 | DRM_DEBUG_ATOMIC("Updating routing for [CONNECTOR:%d:%s]\n", |
283 | connector->base.id, | |
284 | connector->name); | |
623369e5 | 285 | |
415c3ac3 ML |
286 | if (old_connector_state->crtc != new_connector_state->crtc) { |
287 | if (old_connector_state->crtc) { | |
b4d93679 | 288 | crtc_state = drm_atomic_get_new_crtc_state(state, old_connector_state->crtc); |
fc596660 | 289 | crtc_state->connectors_changed = true; |
623369e5 DV |
290 | } |
291 | ||
415c3ac3 | 292 | if (new_connector_state->crtc) { |
b4d93679 | 293 | crtc_state = drm_atomic_get_new_crtc_state(state, new_connector_state->crtc); |
fc596660 | 294 | crtc_state->connectors_changed = true; |
623369e5 DV |
295 | } |
296 | } | |
297 | ||
415c3ac3 | 298 | if (!new_connector_state->crtc) { |
17a38d9c | 299 | DRM_DEBUG_ATOMIC("Disabling [CONNECTOR:%d:%s]\n", |
623369e5 DV |
300 | connector->base.id, |
301 | connector->name); | |
302 | ||
415c3ac3 | 303 | set_best_encoder(state, new_connector_state, NULL); |
623369e5 DV |
304 | |
305 | return 0; | |
306 | } | |
307 | ||
308 | funcs = connector->helper_private; | |
3b8a684b DV |
309 | |
310 | if (funcs->atomic_best_encoder) | |
311 | new_encoder = funcs->atomic_best_encoder(connector, | |
415c3ac3 | 312 | new_connector_state); |
c61b93fe | 313 | else if (funcs->best_encoder) |
3b8a684b | 314 | new_encoder = funcs->best_encoder(connector); |
c61b93fe BB |
315 | else |
316 | new_encoder = drm_atomic_helper_best_encoder(connector); | |
623369e5 DV |
317 | |
318 | if (!new_encoder) { | |
17a38d9c DV |
319 | DRM_DEBUG_ATOMIC("No suitable encoder found for [CONNECTOR:%d:%s]\n", |
320 | connector->base.id, | |
321 | connector->name); | |
623369e5 DV |
322 | return -EINVAL; |
323 | } | |
324 | ||
415c3ac3 | 325 | if (!drm_encoder_crtc_ok(new_encoder, new_connector_state->crtc)) { |
6ac7c548 | 326 | DRM_DEBUG_ATOMIC("[ENCODER:%d:%s] incompatible with [CRTC:%d:%s]\n", |
5481c8fb DV |
327 | new_encoder->base.id, |
328 | new_encoder->name, | |
415c3ac3 ML |
329 | new_connector_state->crtc->base.id, |
330 | new_connector_state->crtc->name); | |
5481c8fb DV |
331 | return -EINVAL; |
332 | } | |
333 | ||
415c3ac3 ML |
334 | if (new_encoder == new_connector_state->best_encoder) { |
335 | set_best_encoder(state, new_connector_state, new_encoder); | |
e87a52b3 | 336 | |
fa3ab4c2 | 337 | DRM_DEBUG_ATOMIC("[CONNECTOR:%d:%s] keeps [ENCODER:%d:%s], now on [CRTC:%d:%s]\n", |
17a38d9c DV |
338 | connector->base.id, |
339 | connector->name, | |
340 | new_encoder->base.id, | |
341 | new_encoder->name, | |
415c3ac3 ML |
342 | new_connector_state->crtc->base.id, |
343 | new_connector_state->crtc->name); | |
623369e5 DV |
344 | |
345 | return 0; | |
346 | } | |
347 | ||
ec5aaa58 | 348 | steal_encoder(state, new_encoder); |
6ea76f3c | 349 | |
415c3ac3 | 350 | set_best_encoder(state, new_connector_state, new_encoder); |
e87a52b3 | 351 | |
b4d93679 | 352 | crtc_state = drm_atomic_get_new_crtc_state(state, new_connector_state->crtc); |
fc596660 | 353 | crtc_state->connectors_changed = true; |
623369e5 | 354 | |
fa3ab4c2 | 355 | DRM_DEBUG_ATOMIC("[CONNECTOR:%d:%s] using [ENCODER:%d:%s] on [CRTC:%d:%s]\n", |
17a38d9c DV |
356 | connector->base.id, |
357 | connector->name, | |
358 | new_encoder->base.id, | |
359 | new_encoder->name, | |
415c3ac3 ML |
360 | new_connector_state->crtc->base.id, |
361 | new_connector_state->crtc->name); | |
623369e5 DV |
362 | |
363 | return 0; | |
364 | } | |
365 | ||
366 | static int | |
367 | mode_fixup(struct drm_atomic_state *state) | |
368 | { | |
df63b999 | 369 | struct drm_crtc *crtc; |
415c3ac3 | 370 | struct drm_crtc_state *new_crtc_state; |
df63b999 | 371 | struct drm_connector *connector; |
415c3ac3 | 372 | struct drm_connector_state *new_conn_state; |
623369e5 | 373 | int i; |
f9ad86e4 | 374 | int ret; |
623369e5 | 375 | |
415c3ac3 ML |
376 | for_each_new_crtc_in_state(state, crtc, new_crtc_state, i) { |
377 | if (!new_crtc_state->mode_changed && | |
378 | !new_crtc_state->connectors_changed) | |
623369e5 DV |
379 | continue; |
380 | ||
415c3ac3 | 381 | drm_mode_copy(&new_crtc_state->adjusted_mode, &new_crtc_state->mode); |
623369e5 DV |
382 | } |
383 | ||
415c3ac3 | 384 | for_each_new_connector_in_state(state, connector, new_conn_state, i) { |
b5ceff20 | 385 | const struct drm_encoder_helper_funcs *funcs; |
623369e5 DV |
386 | struct drm_encoder *encoder; |
387 | ||
415c3ac3 | 388 | WARN_ON(!!new_conn_state->best_encoder != !!new_conn_state->crtc); |
623369e5 | 389 | |
415c3ac3 | 390 | if (!new_conn_state->crtc || !new_conn_state->best_encoder) |
623369e5 DV |
391 | continue; |
392 | ||
415c3ac3 | 393 | new_crtc_state = |
b4d93679 | 394 | drm_atomic_get_new_crtc_state(state, new_conn_state->crtc); |
623369e5 DV |
395 | |
396 | /* | |
397 | * Each encoder has at most one connector (since we always steal | |
398 | * it away), so we won't call ->mode_fixup twice. | |
399 | */ | |
415c3ac3 | 400 | encoder = new_conn_state->best_encoder; |
623369e5 DV |
401 | funcs = encoder->helper_private; |
402 | ||
415c3ac3 ML |
403 | ret = drm_bridge_mode_fixup(encoder->bridge, &new_crtc_state->mode, |
404 | &new_crtc_state->adjusted_mode); | |
862e686c AT |
405 | if (!ret) { |
406 | DRM_DEBUG_ATOMIC("Bridge fixup failed\n"); | |
407 | return -EINVAL; | |
623369e5 DV |
408 | } |
409 | ||
2827635e | 410 | if (funcs && funcs->atomic_check) { |
415c3ac3 ML |
411 | ret = funcs->atomic_check(encoder, new_crtc_state, |
412 | new_conn_state); | |
4cd4df80 | 413 | if (ret) { |
17a38d9c DV |
414 | DRM_DEBUG_ATOMIC("[ENCODER:%d:%s] check failed\n", |
415 | encoder->base.id, encoder->name); | |
4cd4df80 TR |
416 | return ret; |
417 | } | |
2827635e | 418 | } else if (funcs && funcs->mode_fixup) { |
415c3ac3 ML |
419 | ret = funcs->mode_fixup(encoder, &new_crtc_state->mode, |
420 | &new_crtc_state->adjusted_mode); | |
4cd4df80 | 421 | if (!ret) { |
17a38d9c DV |
422 | DRM_DEBUG_ATOMIC("[ENCODER:%d:%s] fixup failed\n", |
423 | encoder->base.id, encoder->name); | |
4cd4df80 TR |
424 | return -EINVAL; |
425 | } | |
623369e5 DV |
426 | } |
427 | } | |
428 | ||
415c3ac3 | 429 | for_each_new_crtc_in_state(state, crtc, new_crtc_state, i) { |
b5ceff20 | 430 | const struct drm_crtc_helper_funcs *funcs; |
623369e5 | 431 | |
415c3ac3 | 432 | if (!new_crtc_state->enable) |
f55f1701 LY |
433 | continue; |
434 | ||
415c3ac3 ML |
435 | if (!new_crtc_state->mode_changed && |
436 | !new_crtc_state->connectors_changed) | |
623369e5 DV |
437 | continue; |
438 | ||
439 | funcs = crtc->helper_private; | |
840bfe95 ACO |
440 | if (!funcs->mode_fixup) |
441 | continue; | |
442 | ||
415c3ac3 ML |
443 | ret = funcs->mode_fixup(crtc, &new_crtc_state->mode, |
444 | &new_crtc_state->adjusted_mode); | |
623369e5 | 445 | if (!ret) { |
fa3ab4c2 VS |
446 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] fixup failed\n", |
447 | crtc->base.id, crtc->name); | |
623369e5 DV |
448 | return -EINVAL; |
449 | } | |
450 | } | |
451 | ||
452 | return 0; | |
453 | } | |
454 | ||
d9b13620 | 455 | /** |
f98bd3ef | 456 | * drm_atomic_helper_check_modeset - validate state object for modeset changes |
d9b13620 DV |
457 | * @dev: DRM device |
458 | * @state: the driver state object | |
459 | * | |
460 | * Check the state object to see if the requested state is physically possible. | |
461 | * This does all the crtc and connector related computations for an atomic | |
ce09d766 ML |
462 | * update and adds any additional connectors needed for full modesets. It calls |
463 | * the various per-object callbacks in the follow order: | |
464 | * | |
465 | * 1. &drm_connector_helper_funcs.atomic_best_encoder for determining the new encoder. | |
466 | * 2. &drm_connector_helper_funcs.atomic_check to validate the connector state. | |
467 | * 3. If it's determined a modeset is needed then all connectors on the affected crtc | |
468 | * crtc are added and &drm_connector_helper_funcs.atomic_check is run on them. | |
469 | * 4. &drm_bridge_funcs.mode_fixup is called on all encoder bridges. | |
470 | * 5. &drm_encoder_helper_funcs.atomic_check is called to validate any encoder state. | |
471 | * This function is only called when the encoder will be part of a configured crtc, | |
472 | * it must not be used for implementing connector property validation. | |
473 | * If this function is NULL, &drm_atomic_encoder_helper_funcs.mode_fixup is called | |
474 | * instead. | |
475 | * 6. &drm_crtc_helper_funcs.mode_fixup is called last, to fix up the mode with crtc constraints. | |
6806cdf9 DV |
476 | * |
477 | * &drm_crtc_state.mode_changed is set when the input mode is changed. | |
478 | * &drm_crtc_state.connectors_changed is set when a connector is added or | |
479 | * removed from the crtc. &drm_crtc_state.active_changed is set when | |
480 | * &drm_crtc_state.active changes, which is used for DPMS. | |
d807ed1c | 481 | * See also: drm_atomic_crtc_needs_modeset() |
d9b13620 DV |
482 | * |
483 | * IMPORTANT: | |
484 | * | |
6806cdf9 DV |
485 | * Drivers which set &drm_crtc_state.mode_changed (e.g. in their |
486 | * &drm_plane_helper_funcs.atomic_check hooks if a plane update can't be done | |
487 | * without a full modeset) _must_ call this function afterwards after that | |
488 | * change. It is permitted to call this function multiple times for the same | |
489 | * update, e.g. when the &drm_crtc_helper_funcs.atomic_check functions depend | |
490 | * upon the adjusted dotclock for fifo space allocation and watermark | |
491 | * computation. | |
d9b13620 | 492 | * |
c39032a8 | 493 | * RETURNS: |
d9b13620 DV |
494 | * Zero for success or -errno |
495 | */ | |
496 | int | |
934ce1c2 | 497 | drm_atomic_helper_check_modeset(struct drm_device *dev, |
623369e5 DV |
498 | struct drm_atomic_state *state) |
499 | { | |
623369e5 | 500 | struct drm_crtc *crtc; |
415c3ac3 | 501 | struct drm_crtc_state *old_crtc_state, *new_crtc_state; |
df63b999 | 502 | struct drm_connector *connector; |
415c3ac3 | 503 | struct drm_connector_state *old_connector_state, *new_connector_state; |
623369e5 | 504 | int i, ret; |
ce09d766 | 505 | unsigned connectors_mask = 0; |
623369e5 | 506 | |
415c3ac3 | 507 | for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) { |
970ece83 ML |
508 | bool has_connectors = |
509 | !!new_crtc_state->connector_mask; | |
510 | ||
415c3ac3 | 511 | if (!drm_mode_equal(&old_crtc_state->mode, &new_crtc_state->mode)) { |
fa3ab4c2 VS |
512 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] mode changed\n", |
513 | crtc->base.id, crtc->name); | |
415c3ac3 | 514 | new_crtc_state->mode_changed = true; |
623369e5 DV |
515 | } |
516 | ||
415c3ac3 | 517 | if (old_crtc_state->enable != new_crtc_state->enable) { |
fa3ab4c2 VS |
518 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] enable changed\n", |
519 | crtc->base.id, crtc->name); | |
fc596660 ML |
520 | |
521 | /* | |
522 | * For clarity this assignment is done here, but | |
523 | * enable == 0 is only true when there are no | |
524 | * connectors and a NULL mode. | |
525 | * | |
526 | * The other way around is true as well. enable != 0 | |
527 | * iff connectors are attached and a mode is set. | |
528 | */ | |
415c3ac3 ML |
529 | new_crtc_state->mode_changed = true; |
530 | new_crtc_state->connectors_changed = true; | |
623369e5 | 531 | } |
24d6652c ML |
532 | |
533 | if (old_crtc_state->active != new_crtc_state->active) { | |
534 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] active changed\n", | |
535 | crtc->base.id, crtc->name); | |
536 | new_crtc_state->active_changed = true; | |
537 | } | |
970ece83 ML |
538 | |
539 | if (new_crtc_state->enable != has_connectors) { | |
540 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] enabled/connectors mismatch\n", | |
541 | crtc->base.id, crtc->name); | |
542 | ||
543 | return -EINVAL; | |
544 | } | |
623369e5 DV |
545 | } |
546 | ||
44596b8c | 547 | ret = handle_conflicting_encoders(state, false); |
8248b65d ML |
548 | if (ret) |
549 | return ret; | |
40616a26 | 550 | |
415c3ac3 | 551 | for_each_oldnew_connector_in_state(state, connector, old_connector_state, new_connector_state, i) { |
ce09d766 ML |
552 | const struct drm_connector_helper_funcs *funcs = connector->helper_private; |
553 | ||
623369e5 | 554 | /* |
d807ed1c BS |
555 | * This only sets crtc->connectors_changed for routing changes, |
556 | * drivers must set crtc->connectors_changed themselves when | |
557 | * connector properties need to be updated. | |
623369e5 | 558 | */ |
9459545b | 559 | ret = update_connector_routing(state, connector, |
415c3ac3 ML |
560 | old_connector_state, |
561 | new_connector_state); | |
623369e5 DV |
562 | if (ret) |
563 | return ret; | |
415c3ac3 | 564 | if (old_connector_state->crtc) { |
b4d93679 ML |
565 | new_crtc_state = drm_atomic_get_new_crtc_state(state, |
566 | old_connector_state->crtc); | |
415c3ac3 ML |
567 | if (old_connector_state->link_status != |
568 | new_connector_state->link_status) | |
569 | new_crtc_state->connectors_changed = true; | |
40ee6fbe | 570 | } |
ce09d766 ML |
571 | |
572 | if (funcs->atomic_check) | |
573 | ret = funcs->atomic_check(connector, new_connector_state); | |
574 | if (ret) | |
575 | return ret; | |
576 | ||
577 | connectors_mask += BIT(i); | |
623369e5 DV |
578 | } |
579 | ||
580 | /* | |
581 | * After all the routing has been prepared we need to add in any | |
582 | * connector which is itself unchanged, but who's crtc changes it's | |
583 | * configuration. This must be done before calling mode_fixup in case a | |
584 | * crtc only changed its mode but has the same set of connectors. | |
585 | */ | |
415c3ac3 | 586 | for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) { |
415c3ac3 | 587 | if (!drm_atomic_crtc_needs_modeset(new_crtc_state)) |
623369e5 DV |
588 | continue; |
589 | ||
fa3ab4c2 VS |
590 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] needs all connectors, enable: %c, active: %c\n", |
591 | crtc->base.id, crtc->name, | |
415c3ac3 ML |
592 | new_crtc_state->enable ? 'y' : 'n', |
593 | new_crtc_state->active ? 'y' : 'n'); | |
623369e5 DV |
594 | |
595 | ret = drm_atomic_add_affected_connectors(state, crtc); | |
596 | if (ret != 0) | |
597 | return ret; | |
598 | ||
57744aa7 ML |
599 | ret = drm_atomic_add_affected_planes(state, crtc); |
600 | if (ret != 0) | |
601 | return ret; | |
623369e5 DV |
602 | } |
603 | ||
ce09d766 ML |
604 | /* |
605 | * Iterate over all connectors again, to make sure atomic_check() | |
606 | * has been called on them when a modeset is forced. | |
607 | */ | |
608 | for_each_oldnew_connector_in_state(state, connector, old_connector_state, new_connector_state, i) { | |
609 | const struct drm_connector_helper_funcs *funcs = connector->helper_private; | |
610 | ||
611 | if (connectors_mask & BIT(i)) | |
612 | continue; | |
613 | ||
614 | if (funcs->atomic_check) | |
615 | ret = funcs->atomic_check(connector, new_connector_state); | |
616 | if (ret) | |
617 | return ret; | |
618 | } | |
619 | ||
623369e5 DV |
620 | return mode_fixup(state); |
621 | } | |
d9b13620 | 622 | EXPORT_SYMBOL(drm_atomic_helper_check_modeset); |
623369e5 | 623 | |
c2fcd274 | 624 | /** |
f98bd3ef | 625 | * drm_atomic_helper_check_planes - validate state object for planes changes |
c2fcd274 DV |
626 | * @dev: DRM device |
627 | * @state: the driver state object | |
628 | * | |
629 | * Check the state object to see if the requested state is physically possible. | |
d9b13620 | 630 | * This does all the plane update related checks using by calling into the |
6806cdf9 DV |
631 | * &drm_crtc_helper_funcs.atomic_check and &drm_plane_helper_funcs.atomic_check |
632 | * hooks provided by the driver. | |
c2fcd274 | 633 | * |
6806cdf9 | 634 | * It also sets &drm_crtc_state.planes_changed to indicate that a crtc has |
fc596660 ML |
635 | * updated planes. |
636 | * | |
c39032a8 | 637 | * RETURNS: |
c2fcd274 DV |
638 | * Zero for success or -errno |
639 | */ | |
d9b13620 DV |
640 | int |
641 | drm_atomic_helper_check_planes(struct drm_device *dev, | |
642 | struct drm_atomic_state *state) | |
c2fcd274 | 643 | { |
df63b999 | 644 | struct drm_crtc *crtc; |
415c3ac3 | 645 | struct drm_crtc_state *new_crtc_state; |
df63b999 | 646 | struct drm_plane *plane; |
415c3ac3 | 647 | struct drm_plane_state *new_plane_state, *old_plane_state; |
c2fcd274 DV |
648 | int i, ret = 0; |
649 | ||
415c3ac3 | 650 | for_each_oldnew_plane_in_state(state, plane, old_plane_state, new_plane_state, i) { |
b5ceff20 | 651 | const struct drm_plane_helper_funcs *funcs; |
c2fcd274 DV |
652 | |
653 | funcs = plane->helper_private; | |
654 | ||
415c3ac3 | 655 | drm_atomic_helper_plane_changed(state, old_plane_state, new_plane_state, plane); |
c2fcd274 DV |
656 | |
657 | if (!funcs || !funcs->atomic_check) | |
658 | continue; | |
659 | ||
415c3ac3 | 660 | ret = funcs->atomic_check(plane, new_plane_state); |
c2fcd274 | 661 | if (ret) { |
9f4c97a2 VS |
662 | DRM_DEBUG_ATOMIC("[PLANE:%d:%s] atomic driver check failed\n", |
663 | plane->base.id, plane->name); | |
c2fcd274 DV |
664 | return ret; |
665 | } | |
666 | } | |
667 | ||
415c3ac3 | 668 | for_each_new_crtc_in_state(state, crtc, new_crtc_state, i) { |
b5ceff20 | 669 | const struct drm_crtc_helper_funcs *funcs; |
c2fcd274 DV |
670 | |
671 | funcs = crtc->helper_private; | |
672 | ||
673 | if (!funcs || !funcs->atomic_check) | |
674 | continue; | |
675 | ||
415c3ac3 | 676 | ret = funcs->atomic_check(crtc, new_crtc_state); |
c2fcd274 | 677 | if (ret) { |
fa3ab4c2 VS |
678 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] atomic driver check failed\n", |
679 | crtc->base.id, crtc->name); | |
c2fcd274 DV |
680 | return ret; |
681 | } | |
682 | } | |
683 | ||
d9b13620 DV |
684 | return ret; |
685 | } | |
686 | EXPORT_SYMBOL(drm_atomic_helper_check_planes); | |
687 | ||
688 | /** | |
689 | * drm_atomic_helper_check - validate state object | |
690 | * @dev: DRM device | |
691 | * @state: the driver state object | |
692 | * | |
693 | * Check the state object to see if the requested state is physically possible. | |
694 | * Only crtcs and planes have check callbacks, so for any additional (global) | |
695 | * checking that a driver needs it can simply wrap that around this function. | |
6806cdf9 DV |
696 | * Drivers without such needs can directly use this as their |
697 | * &drm_mode_config_funcs.atomic_check callback. | |
d9b13620 | 698 | * |
b4274fbe DV |
699 | * This just wraps the two parts of the state checking for planes and modeset |
700 | * state in the default order: First it calls drm_atomic_helper_check_modeset() | |
701 | * and then drm_atomic_helper_check_planes(). The assumption is that the | |
6806cdf9 DV |
702 | * @drm_plane_helper_funcs.atomic_check and @drm_crtc_helper_funcs.atomic_check |
703 | * functions depend upon an updated adjusted_mode.clock to e.g. properly compute | |
704 | * watermarks. | |
b4274fbe | 705 | * |
c39032a8 | 706 | * RETURNS: |
d9b13620 DV |
707 | * Zero for success or -errno |
708 | */ | |
709 | int drm_atomic_helper_check(struct drm_device *dev, | |
710 | struct drm_atomic_state *state) | |
711 | { | |
712 | int ret; | |
713 | ||
b4274fbe | 714 | ret = drm_atomic_helper_check_modeset(dev, state); |
d9b13620 DV |
715 | if (ret) |
716 | return ret; | |
717 | ||
b4274fbe | 718 | ret = drm_atomic_helper_check_planes(dev, state); |
934ce1c2 RC |
719 | if (ret) |
720 | return ret; | |
721 | ||
c2fcd274 DV |
722 | return ret; |
723 | } | |
724 | EXPORT_SYMBOL(drm_atomic_helper_check); | |
725 | ||
623369e5 DV |
726 | static void |
727 | disable_outputs(struct drm_device *dev, struct drm_atomic_state *old_state) | |
728 | { | |
df63b999 | 729 | struct drm_connector *connector; |
415c3ac3 | 730 | struct drm_connector_state *old_conn_state, *new_conn_state; |
df63b999 | 731 | struct drm_crtc *crtc; |
415c3ac3 | 732 | struct drm_crtc_state *old_crtc_state, *new_crtc_state; |
623369e5 DV |
733 | int i; |
734 | ||
415c3ac3 | 735 | for_each_oldnew_connector_in_state(old_state, connector, old_conn_state, new_conn_state, i) { |
b5ceff20 | 736 | const struct drm_encoder_helper_funcs *funcs; |
623369e5 DV |
737 | struct drm_encoder *encoder; |
738 | ||
623369e5 DV |
739 | /* Shut down everything that's in the changeset and currently |
740 | * still on. So need to check the old, saved state. */ | |
df63b999 | 741 | if (!old_conn_state->crtc) |
623369e5 DV |
742 | continue; |
743 | ||
b4d93679 | 744 | old_crtc_state = drm_atomic_get_old_crtc_state(old_state, old_conn_state->crtc); |
eab3bbef | 745 | |
4218a32f | 746 | if (!old_crtc_state->active || |
2465ff62 | 747 | !drm_atomic_crtc_needs_modeset(old_conn_state->crtc->state)) |
eab3bbef DV |
748 | continue; |
749 | ||
46df9adb | 750 | encoder = old_conn_state->best_encoder; |
623369e5 | 751 | |
46df9adb RC |
752 | /* We shouldn't get this far if we didn't previously have |
753 | * an encoder.. but WARN_ON() rather than explode. | |
754 | */ | |
755 | if (WARN_ON(!encoder)) | |
623369e5 DV |
756 | continue; |
757 | ||
758 | funcs = encoder->helper_private; | |
759 | ||
17a38d9c DV |
760 | DRM_DEBUG_ATOMIC("disabling [ENCODER:%d:%s]\n", |
761 | encoder->base.id, encoder->name); | |
95d6eb3b | 762 | |
623369e5 DV |
763 | /* |
764 | * Each encoder has at most one connector (since we always steal | |
f98bd3ef | 765 | * it away), so we won't call disable hooks twice. |
623369e5 | 766 | */ |
862e686c | 767 | drm_bridge_disable(encoder->bridge); |
623369e5 DV |
768 | |
769 | /* Right function depends upon target state. */ | |
2827635e | 770 | if (funcs) { |
415c3ac3 | 771 | if (new_conn_state->crtc && funcs->prepare) |
2827635e NT |
772 | funcs->prepare(encoder); |
773 | else if (funcs->disable) | |
774 | funcs->disable(encoder); | |
775 | else if (funcs->dpms) | |
776 | funcs->dpms(encoder, DRM_MODE_DPMS_OFF); | |
777 | } | |
623369e5 | 778 | |
862e686c | 779 | drm_bridge_post_disable(encoder->bridge); |
623369e5 DV |
780 | } |
781 | ||
415c3ac3 | 782 | for_each_oldnew_crtc_in_state(old_state, crtc, old_crtc_state, new_crtc_state, i) { |
b5ceff20 | 783 | const struct drm_crtc_helper_funcs *funcs; |
623369e5 DV |
784 | |
785 | /* Shut down everything that needs a full modeset. */ | |
415c3ac3 | 786 | if (!drm_atomic_crtc_needs_modeset(new_crtc_state)) |
eab3bbef DV |
787 | continue; |
788 | ||
789 | if (!old_crtc_state->active) | |
623369e5 DV |
790 | continue; |
791 | ||
792 | funcs = crtc->helper_private; | |
793 | ||
fa3ab4c2 VS |
794 | DRM_DEBUG_ATOMIC("disabling [CRTC:%d:%s]\n", |
795 | crtc->base.id, crtc->name); | |
95d6eb3b DV |
796 | |
797 | ||
623369e5 | 798 | /* Right function depends upon target state. */ |
415c3ac3 | 799 | if (new_crtc_state->enable && funcs->prepare) |
623369e5 | 800 | funcs->prepare(crtc); |
c9ac8b4c LY |
801 | else if (funcs->atomic_disable) |
802 | funcs->atomic_disable(crtc, old_crtc_state); | |
623369e5 DV |
803 | else if (funcs->disable) |
804 | funcs->disable(crtc); | |
805 | else | |
806 | funcs->dpms(crtc, DRM_MODE_DPMS_OFF); | |
807 | } | |
808 | } | |
809 | ||
4c18d301 DV |
810 | /** |
811 | * drm_atomic_helper_update_legacy_modeset_state - update legacy modeset state | |
812 | * @dev: DRM device | |
813 | * @old_state: atomic state object with old state structures | |
814 | * | |
815 | * This function updates all the various legacy modeset state pointers in | |
816 | * connectors, encoders and crtcs. It also updates the timestamping constants | |
817 | * used for precise vblank timestamps by calling | |
818 | * drm_calc_timestamping_constants(). | |
819 | * | |
820 | * Drivers can use this for building their own atomic commit if they don't have | |
821 | * a pure helper-based modeset implementation. | |
822 | */ | |
823 | void | |
824 | drm_atomic_helper_update_legacy_modeset_state(struct drm_device *dev, | |
825 | struct drm_atomic_state *old_state) | |
623369e5 | 826 | { |
df63b999 | 827 | struct drm_connector *connector; |
415c3ac3 | 828 | struct drm_connector_state *old_conn_state, *new_conn_state; |
df63b999 | 829 | struct drm_crtc *crtc; |
415c3ac3 | 830 | struct drm_crtc_state *new_crtc_state; |
623369e5 DV |
831 | int i; |
832 | ||
8c10342c | 833 | /* clear out existing links and update dpms */ |
415c3ac3 | 834 | for_each_oldnew_connector_in_state(old_state, connector, old_conn_state, new_conn_state, i) { |
8c10342c ML |
835 | if (connector->encoder) { |
836 | WARN_ON(!connector->encoder->crtc); | |
837 | ||
838 | connector->encoder->crtc = NULL; | |
839 | connector->encoder = NULL; | |
840 | } | |
623369e5 | 841 | |
415c3ac3 | 842 | crtc = new_conn_state->crtc; |
8c10342c ML |
843 | if ((!crtc && old_conn_state->crtc) || |
844 | (crtc && drm_atomic_crtc_needs_modeset(crtc->state))) { | |
845 | struct drm_property *dpms_prop = | |
846 | dev->mode_config.dpms_property; | |
847 | int mode = DRM_MODE_DPMS_OFF; | |
623369e5 | 848 | |
8c10342c ML |
849 | if (crtc && crtc->state->active) |
850 | mode = DRM_MODE_DPMS_ON; | |
851 | ||
852 | connector->dpms = mode; | |
853 | drm_object_property_set_value(&connector->base, | |
854 | dpms_prop, mode); | |
855 | } | |
623369e5 DV |
856 | } |
857 | ||
858 | /* set new links */ | |
415c3ac3 ML |
859 | for_each_new_connector_in_state(old_state, connector, new_conn_state, i) { |
860 | if (!new_conn_state->crtc) | |
623369e5 DV |
861 | continue; |
862 | ||
415c3ac3 | 863 | if (WARN_ON(!new_conn_state->best_encoder)) |
623369e5 DV |
864 | continue; |
865 | ||
415c3ac3 ML |
866 | connector->encoder = new_conn_state->best_encoder; |
867 | connector->encoder->crtc = new_conn_state->crtc; | |
623369e5 DV |
868 | } |
869 | ||
870 | /* set legacy state in the crtc structure */ | |
415c3ac3 | 871 | for_each_new_crtc_in_state(old_state, crtc, new_crtc_state, i) { |
2660801f | 872 | struct drm_plane *primary = crtc->primary; |
b4d93679 | 873 | struct drm_plane_state *new_plane_state; |
2660801f | 874 | |
415c3ac3 ML |
875 | crtc->mode = new_crtc_state->mode; |
876 | crtc->enabled = new_crtc_state->enable; | |
2660801f | 877 | |
b4d93679 ML |
878 | new_plane_state = |
879 | drm_atomic_get_new_plane_state(old_state, primary); | |
880 | ||
881 | if (new_plane_state && new_plane_state->crtc == crtc) { | |
882 | crtc->x = new_plane_state->src_x >> 16; | |
883 | crtc->y = new_plane_state->src_y >> 16; | |
2660801f | 884 | } |
3d51d2d2 | 885 | |
415c3ac3 | 886 | if (new_crtc_state->enable) |
3d51d2d2 | 887 | drm_calc_timestamping_constants(crtc, |
415c3ac3 | 888 | &new_crtc_state->adjusted_mode); |
623369e5 DV |
889 | } |
890 | } | |
4c18d301 | 891 | EXPORT_SYMBOL(drm_atomic_helper_update_legacy_modeset_state); |
623369e5 DV |
892 | |
893 | static void | |
894 | crtc_set_mode(struct drm_device *dev, struct drm_atomic_state *old_state) | |
895 | { | |
df63b999 | 896 | struct drm_crtc *crtc; |
415c3ac3 | 897 | struct drm_crtc_state *new_crtc_state; |
df63b999 | 898 | struct drm_connector *connector; |
415c3ac3 | 899 | struct drm_connector_state *new_conn_state; |
623369e5 DV |
900 | int i; |
901 | ||
415c3ac3 | 902 | for_each_new_crtc_in_state(old_state, crtc, new_crtc_state, i) { |
b5ceff20 | 903 | const struct drm_crtc_helper_funcs *funcs; |
623369e5 | 904 | |
415c3ac3 | 905 | if (!new_crtc_state->mode_changed) |
623369e5 DV |
906 | continue; |
907 | ||
908 | funcs = crtc->helper_private; | |
909 | ||
415c3ac3 | 910 | if (new_crtc_state->enable && funcs->mode_set_nofb) { |
fa3ab4c2 VS |
911 | DRM_DEBUG_ATOMIC("modeset on [CRTC:%d:%s]\n", |
912 | crtc->base.id, crtc->name); | |
95d6eb3b | 913 | |
623369e5 | 914 | funcs->mode_set_nofb(crtc); |
95d6eb3b | 915 | } |
623369e5 DV |
916 | } |
917 | ||
415c3ac3 | 918 | for_each_new_connector_in_state(old_state, connector, new_conn_state, i) { |
b5ceff20 | 919 | const struct drm_encoder_helper_funcs *funcs; |
623369e5 DV |
920 | struct drm_encoder *encoder; |
921 | struct drm_display_mode *mode, *adjusted_mode; | |
922 | ||
415c3ac3 | 923 | if (!new_conn_state->best_encoder) |
623369e5 DV |
924 | continue; |
925 | ||
415c3ac3 | 926 | encoder = new_conn_state->best_encoder; |
623369e5 | 927 | funcs = encoder->helper_private; |
415c3ac3 | 928 | new_crtc_state = new_conn_state->crtc->state; |
623369e5 DV |
929 | mode = &new_crtc_state->mode; |
930 | adjusted_mode = &new_crtc_state->adjusted_mode; | |
931 | ||
eab3bbef DV |
932 | if (!new_crtc_state->mode_changed) |
933 | continue; | |
934 | ||
17a38d9c DV |
935 | DRM_DEBUG_ATOMIC("modeset on [ENCODER:%d:%s]\n", |
936 | encoder->base.id, encoder->name); | |
95d6eb3b | 937 | |
623369e5 DV |
938 | /* |
939 | * Each encoder has at most one connector (since we always steal | |
f98bd3ef | 940 | * it away), so we won't call mode_set hooks twice. |
623369e5 | 941 | */ |
fe4a11c9 PZ |
942 | if (funcs && funcs->atomic_mode_set) { |
943 | funcs->atomic_mode_set(encoder, new_crtc_state, | |
415c3ac3 | 944 | new_conn_state); |
fe4a11c9 | 945 | } else if (funcs && funcs->mode_set) { |
c982bd90 | 946 | funcs->mode_set(encoder, mode, adjusted_mode); |
fe4a11c9 | 947 | } |
623369e5 | 948 | |
862e686c | 949 | drm_bridge_mode_set(encoder->bridge, mode, adjusted_mode); |
623369e5 DV |
950 | } |
951 | } | |
952 | ||
953 | /** | |
1af434a9 | 954 | * drm_atomic_helper_commit_modeset_disables - modeset commit to disable outputs |
623369e5 | 955 | * @dev: DRM device |
a072f809 | 956 | * @old_state: atomic state object with old state structures |
623369e5 | 957 | * |
1af434a9 | 958 | * This function shuts down all the outputs that need to be shut down and |
623369e5 | 959 | * prepares them (if required) with the new mode. |
1af434a9 | 960 | * |
60acc4eb | 961 | * For compatibility with legacy crtc helpers this should be called before |
1af434a9 DV |
962 | * drm_atomic_helper_commit_planes(), which is what the default commit function |
963 | * does. But drivers with different needs can group the modeset commits together | |
964 | * and do the plane commits at the end. This is useful for drivers doing runtime | |
965 | * PM since planes updates then only happen when the CRTC is actually enabled. | |
623369e5 | 966 | */ |
1af434a9 DV |
967 | void drm_atomic_helper_commit_modeset_disables(struct drm_device *dev, |
968 | struct drm_atomic_state *old_state) | |
623369e5 | 969 | { |
a072f809 | 970 | disable_outputs(dev, old_state); |
4c18d301 DV |
971 | |
972 | drm_atomic_helper_update_legacy_modeset_state(dev, old_state); | |
973 | ||
a072f809 | 974 | crtc_set_mode(dev, old_state); |
623369e5 | 975 | } |
1af434a9 | 976 | EXPORT_SYMBOL(drm_atomic_helper_commit_modeset_disables); |
623369e5 DV |
977 | |
978 | /** | |
1af434a9 | 979 | * drm_atomic_helper_commit_modeset_enables - modeset commit to enable outputs |
623369e5 DV |
980 | * @dev: DRM device |
981 | * @old_state: atomic state object with old state structures | |
982 | * | |
1af434a9 DV |
983 | * This function enables all the outputs with the new configuration which had to |
984 | * be turned off for the update. | |
985 | * | |
60acc4eb | 986 | * For compatibility with legacy crtc helpers this should be called after |
1af434a9 DV |
987 | * drm_atomic_helper_commit_planes(), which is what the default commit function |
988 | * does. But drivers with different needs can group the modeset commits together | |
989 | * and do the plane commits at the end. This is useful for drivers doing runtime | |
990 | * PM since planes updates then only happen when the CRTC is actually enabled. | |
623369e5 | 991 | */ |
1af434a9 DV |
992 | void drm_atomic_helper_commit_modeset_enables(struct drm_device *dev, |
993 | struct drm_atomic_state *old_state) | |
623369e5 | 994 | { |
df63b999 | 995 | struct drm_crtc *crtc; |
415c3ac3 | 996 | struct drm_crtc_state *new_crtc_state; |
df63b999 | 997 | struct drm_connector *connector; |
415c3ac3 | 998 | struct drm_connector_state *new_conn_state; |
623369e5 DV |
999 | int i; |
1000 | ||
415c3ac3 | 1001 | for_each_new_crtc_in_state(old_state, crtc, new_crtc_state, i) { |
b5ceff20 | 1002 | const struct drm_crtc_helper_funcs *funcs; |
623369e5 DV |
1003 | |
1004 | /* Need to filter out CRTCs where only planes change. */ | |
415c3ac3 | 1005 | if (!drm_atomic_crtc_needs_modeset(new_crtc_state)) |
eab3bbef DV |
1006 | continue; |
1007 | ||
415c3ac3 | 1008 | if (!new_crtc_state->active) |
623369e5 DV |
1009 | continue; |
1010 | ||
1011 | funcs = crtc->helper_private; | |
1012 | ||
415c3ac3 | 1013 | if (new_crtc_state->enable) { |
fa3ab4c2 VS |
1014 | DRM_DEBUG_ATOMIC("enabling [CRTC:%d:%s]\n", |
1015 | crtc->base.id, crtc->name); | |
95d6eb3b | 1016 | |
ee0a89cf DV |
1017 | if (funcs->enable) |
1018 | funcs->enable(crtc); | |
1019 | else | |
1020 | funcs->commit(crtc); | |
1021 | } | |
623369e5 DV |
1022 | } |
1023 | ||
415c3ac3 | 1024 | for_each_new_connector_in_state(old_state, connector, new_conn_state, i) { |
b5ceff20 | 1025 | const struct drm_encoder_helper_funcs *funcs; |
623369e5 DV |
1026 | struct drm_encoder *encoder; |
1027 | ||
415c3ac3 | 1028 | if (!new_conn_state->best_encoder) |
623369e5 DV |
1029 | continue; |
1030 | ||
415c3ac3 ML |
1031 | if (!new_conn_state->crtc->state->active || |
1032 | !drm_atomic_crtc_needs_modeset(new_conn_state->crtc->state)) | |
eab3bbef DV |
1033 | continue; |
1034 | ||
415c3ac3 | 1035 | encoder = new_conn_state->best_encoder; |
623369e5 DV |
1036 | funcs = encoder->helper_private; |
1037 | ||
17a38d9c DV |
1038 | DRM_DEBUG_ATOMIC("enabling [ENCODER:%d:%s]\n", |
1039 | encoder->base.id, encoder->name); | |
95d6eb3b | 1040 | |
623369e5 DV |
1041 | /* |
1042 | * Each encoder has at most one connector (since we always steal | |
f98bd3ef | 1043 | * it away), so we won't call enable hooks twice. |
623369e5 | 1044 | */ |
862e686c | 1045 | drm_bridge_pre_enable(encoder->bridge); |
623369e5 | 1046 | |
2827635e NT |
1047 | if (funcs) { |
1048 | if (funcs->enable) | |
1049 | funcs->enable(encoder); | |
1050 | else if (funcs->commit) | |
1051 | funcs->commit(encoder); | |
1052 | } | |
623369e5 | 1053 | |
862e686c | 1054 | drm_bridge_enable(encoder->bridge); |
623369e5 DV |
1055 | } |
1056 | } | |
1af434a9 | 1057 | EXPORT_SYMBOL(drm_atomic_helper_commit_modeset_enables); |
623369e5 | 1058 | |
4c5b7f3a RC |
1059 | /** |
1060 | * drm_atomic_helper_wait_for_fences - wait for fences stashed in plane state | |
1061 | * @dev: DRM device | |
1062 | * @state: atomic state object with old state structures | |
1ea0c02e DV |
1063 | * @pre_swap: If true, do an interruptible wait, and @state is the new state. |
1064 | * Otherwise @state is the old state. | |
4c5b7f3a RC |
1065 | * |
1066 | * For implicit sync, driver should fish the exclusive fence out from the | |
1067 | * incoming fb's and stash it in the drm_plane_state. This is called after | |
1068 | * drm_atomic_helper_swap_state() so it uses the current plane state (and | |
1069 | * just uses the atomic state to find the changed planes) | |
f6ce410a | 1070 | * |
1ea0c02e DV |
1071 | * Note that @pre_swap is needed since the point where we block for fences moves |
1072 | * around depending upon whether an atomic commit is blocking or | |
1073 | * non-blocking. For async commit all waiting needs to happen after | |
1074 | * drm_atomic_helper_swap_state() is called, but for synchronous commits we want | |
1075 | * to wait **before** we do anything that can't be easily rolled back. That is | |
1076 | * before we call drm_atomic_helper_swap_state(). | |
1077 | * | |
f54d1867 | 1078 | * Returns zero if success or < 0 if dma_fence_wait() fails. |
4c5b7f3a | 1079 | */ |
f6ce410a GP |
1080 | int drm_atomic_helper_wait_for_fences(struct drm_device *dev, |
1081 | struct drm_atomic_state *state, | |
1082 | bool pre_swap) | |
e2330f07 | 1083 | { |
df63b999 | 1084 | struct drm_plane *plane; |
415c3ac3 | 1085 | struct drm_plane_state *new_plane_state; |
f6ce410a | 1086 | int i, ret; |
e2330f07 | 1087 | |
415c3ac3 ML |
1088 | for_each_new_plane_in_state(state, plane, new_plane_state, i) { |
1089 | if (!new_plane_state->fence) | |
e2330f07 DV |
1090 | continue; |
1091 | ||
415c3ac3 | 1092 | WARN_ON(!new_plane_state->fb); |
f6ce410a GP |
1093 | |
1094 | /* | |
1095 | * If waiting for fences pre-swap (ie: nonblock), userspace can | |
1096 | * still interrupt the operation. Instead of blocking until the | |
1097 | * timer expires, make the wait interruptible. | |
1098 | */ | |
415c3ac3 | 1099 | ret = dma_fence_wait(new_plane_state->fence, pre_swap); |
f6ce410a GP |
1100 | if (ret) |
1101 | return ret; | |
e2330f07 | 1102 | |
415c3ac3 ML |
1103 | dma_fence_put(new_plane_state->fence); |
1104 | new_plane_state->fence = NULL; | |
e2330f07 | 1105 | } |
f6ce410a GP |
1106 | |
1107 | return 0; | |
e2330f07 | 1108 | } |
4c5b7f3a | 1109 | EXPORT_SYMBOL(drm_atomic_helper_wait_for_fences); |
e2330f07 | 1110 | |
5ee3229c RC |
1111 | /** |
1112 | * drm_atomic_helper_wait_for_vblanks - wait for vblank on crtcs | |
1113 | * @dev: DRM device | |
1114 | * @old_state: atomic state object with old state structures | |
1115 | * | |
1116 | * Helper to, after atomic commit, wait for vblanks on all effected | |
1117 | * crtcs (ie. before cleaning up old framebuffers using | |
ab58e338 DV |
1118 | * drm_atomic_helper_cleanup_planes()). It will only wait on crtcs where the |
1119 | * framebuffers have actually changed to optimize for the legacy cursor and | |
1120 | * plane update use-case. | |
5ee3229c RC |
1121 | */ |
1122 | void | |
1123 | drm_atomic_helper_wait_for_vblanks(struct drm_device *dev, | |
1124 | struct drm_atomic_state *old_state) | |
623369e5 DV |
1125 | { |
1126 | struct drm_crtc *crtc; | |
415c3ac3 | 1127 | struct drm_crtc_state *old_crtc_state, *new_crtc_state; |
623369e5 | 1128 | int i, ret; |
bdc57146 | 1129 | unsigned crtc_mask = 0; |
623369e5 | 1130 | |
bdc57146 ML |
1131 | /* |
1132 | * Legacy cursor ioctls are completely unsynced, and userspace | |
1133 | * relies on that (by doing tons of cursor updates). | |
1134 | */ | |
1135 | if (old_state->legacy_cursor_update) | |
1136 | return; | |
623369e5 | 1137 | |
415c3ac3 | 1138 | for_each_oldnew_crtc_in_state(old_state, crtc, old_crtc_state, new_crtc_state, i) { |
a3fbb53f | 1139 | if (!new_crtc_state->active || !new_crtc_state->planes_changed) |
ab58e338 DV |
1140 | continue; |
1141 | ||
623369e5 DV |
1142 | ret = drm_crtc_vblank_get(crtc); |
1143 | if (ret != 0) | |
1144 | continue; | |
1145 | ||
bdc57146 ML |
1146 | crtc_mask |= drm_crtc_mask(crtc); |
1147 | old_state->crtcs[i].last_vblank_count = drm_crtc_vblank_count(crtc); | |
623369e5 DV |
1148 | } |
1149 | ||
415c3ac3 | 1150 | for_each_old_crtc_in_state(old_state, crtc, old_crtc_state, i) { |
bdc57146 | 1151 | if (!(crtc_mask & drm_crtc_mask(crtc))) |
623369e5 DV |
1152 | continue; |
1153 | ||
1154 | ret = wait_event_timeout(dev->vblank[i].queue, | |
bdc57146 | 1155 | old_state->crtcs[i].last_vblank_count != |
d4853630 | 1156 | drm_crtc_vblank_count(crtc), |
623369e5 DV |
1157 | msecs_to_jiffies(50)); |
1158 | ||
6ac7c548 RK |
1159 | WARN(!ret, "[CRTC:%d:%s] vblank wait timed out\n", |
1160 | crtc->base.id, crtc->name); | |
8d4d0d70 | 1161 | |
623369e5 DV |
1162 | drm_crtc_vblank_put(crtc); |
1163 | } | |
1164 | } | |
5ee3229c | 1165 | EXPORT_SYMBOL(drm_atomic_helper_wait_for_vblanks); |
623369e5 DV |
1166 | |
1167 | /** | |
9f2a7950 | 1168 | * drm_atomic_helper_commit_tail - commit atomic update to hardware |
1ea0c02e | 1169 | * @old_state: atomic state object with old state structures |
623369e5 | 1170 | * |
6806cdf9 DV |
1171 | * This is the default implementation for the |
1172 | * &drm_mode_config_helper_funcs.atomic_commit_tail hook. | |
623369e5 | 1173 | * |
9f2a7950 DV |
1174 | * Note that the default ordering of how the various stages are called is to |
1175 | * match the legacy modeset helper library closest. One peculiarity of that is | |
1176 | * that it doesn't mesh well with runtime PM at all. | |
6e48ae32 | 1177 | * |
9f2a7950 | 1178 | * For drivers supporting runtime PM the recommended sequence is instead :: |
6e48ae32 | 1179 | * |
1ea0c02e | 1180 | * drm_atomic_helper_commit_modeset_disables(dev, old_state); |
6e48ae32 | 1181 | * |
1ea0c02e | 1182 | * drm_atomic_helper_commit_modeset_enables(dev, old_state); |
6e48ae32 | 1183 | * |
1ea0c02e | 1184 | * drm_atomic_helper_commit_planes(dev, old_state, |
2b58e98d | 1185 | * DRM_PLANE_COMMIT_ACTIVE_ONLY); |
6e48ae32 | 1186 | * |
9f2a7950 DV |
1187 | * for committing the atomic update to hardware. See the kerneldoc entries for |
1188 | * these three functions for more details. | |
1189 | */ | |
1ea0c02e | 1190 | void drm_atomic_helper_commit_tail(struct drm_atomic_state *old_state) |
9f2a7950 | 1191 | { |
1ea0c02e | 1192 | struct drm_device *dev = old_state->dev; |
9f2a7950 | 1193 | |
1ea0c02e | 1194 | drm_atomic_helper_commit_modeset_disables(dev, old_state); |
9f2a7950 | 1195 | |
1ea0c02e | 1196 | drm_atomic_helper_commit_planes(dev, old_state, 0); |
9f2a7950 | 1197 | |
1ea0c02e | 1198 | drm_atomic_helper_commit_modeset_enables(dev, old_state); |
9f2a7950 | 1199 | |
1ea0c02e | 1200 | drm_atomic_helper_commit_hw_done(old_state); |
9f2a7950 | 1201 | |
1ea0c02e | 1202 | drm_atomic_helper_wait_for_vblanks(dev, old_state); |
9f2a7950 | 1203 | |
1ea0c02e | 1204 | drm_atomic_helper_cleanup_planes(dev, old_state); |
9f2a7950 DV |
1205 | } |
1206 | EXPORT_SYMBOL(drm_atomic_helper_commit_tail); | |
1207 | ||
1ea0c02e | 1208 | static void commit_tail(struct drm_atomic_state *old_state) |
9f2a7950 | 1209 | { |
1ea0c02e | 1210 | struct drm_device *dev = old_state->dev; |
a4b10cce | 1211 | const struct drm_mode_config_helper_funcs *funcs; |
9f2a7950 DV |
1212 | |
1213 | funcs = dev->mode_config.helper_private; | |
1214 | ||
1ea0c02e | 1215 | drm_atomic_helper_wait_for_fences(dev, old_state, false); |
9f2a7950 | 1216 | |
1ea0c02e | 1217 | drm_atomic_helper_wait_for_dependencies(old_state); |
9f2a7950 DV |
1218 | |
1219 | if (funcs && funcs->atomic_commit_tail) | |
1ea0c02e | 1220 | funcs->atomic_commit_tail(old_state); |
9f2a7950 | 1221 | else |
1ea0c02e | 1222 | drm_atomic_helper_commit_tail(old_state); |
9f2a7950 | 1223 | |
1ea0c02e | 1224 | drm_atomic_helper_commit_cleanup_done(old_state); |
9f2a7950 | 1225 | |
1ea0c02e | 1226 | drm_atomic_state_put(old_state); |
9f2a7950 DV |
1227 | } |
1228 | ||
1229 | static void commit_work(struct work_struct *work) | |
1230 | { | |
1231 | struct drm_atomic_state *state = container_of(work, | |
1232 | struct drm_atomic_state, | |
1233 | commit_work); | |
1234 | commit_tail(state); | |
1235 | } | |
1236 | ||
1237 | /** | |
1238 | * drm_atomic_helper_commit - commit validated state object | |
1239 | * @dev: DRM device | |
1240 | * @state: the driver state object | |
1241 | * @nonblock: whether nonblocking behavior is requested. | |
1242 | * | |
1243 | * This function commits a with drm_atomic_helper_check() pre-validated state | |
1244 | * object. This can still fail when e.g. the framebuffer reservation fails. This | |
1245 | * function implements nonblocking commits, using | |
1246 | * drm_atomic_helper_setup_commit() and related functions. | |
1247 | * | |
9f2a7950 | 1248 | * Committing the actual hardware state is done through the |
6806cdf9 DV |
1249 | * &drm_mode_config_helper_funcs.atomic_commit_tail callback, or it's default |
1250 | * implementation drm_atomic_helper_commit_tail(). | |
6e48ae32 | 1251 | * |
c39032a8 | 1252 | * RETURNS: |
623369e5 DV |
1253 | * Zero for success or -errno. |
1254 | */ | |
1255 | int drm_atomic_helper_commit(struct drm_device *dev, | |
1256 | struct drm_atomic_state *state, | |
286dbb8d | 1257 | bool nonblock) |
623369e5 DV |
1258 | { |
1259 | int ret; | |
1260 | ||
a095caa7 DV |
1261 | ret = drm_atomic_helper_setup_commit(state, nonblock); |
1262 | if (ret) | |
1263 | return ret; | |
1264 | ||
9f2a7950 DV |
1265 | INIT_WORK(&state->commit_work, commit_work); |
1266 | ||
623369e5 DV |
1267 | ret = drm_atomic_helper_prepare_planes(dev, state); |
1268 | if (ret) | |
1269 | return ret; | |
1270 | ||
f6ce410a GP |
1271 | if (!nonblock) { |
1272 | ret = drm_atomic_helper_wait_for_fences(dev, state, true); | |
aebe55c2 LP |
1273 | if (ret) { |
1274 | drm_atomic_helper_cleanup_planes(dev, state); | |
f6ce410a | 1275 | return ret; |
aebe55c2 | 1276 | } |
f6ce410a GP |
1277 | } |
1278 | ||
623369e5 DV |
1279 | /* |
1280 | * This is the point of no return - everything below never fails except | |
1281 | * when the hw goes bonghits. Which means we can commit the new state on | |
1282 | * the software side now. | |
1283 | */ | |
1284 | ||
5e84c269 | 1285 | drm_atomic_helper_swap_state(state, true); |
623369e5 DV |
1286 | |
1287 | /* | |
1288 | * Everything below can be run asynchronously without the need to grab | |
f98bd3ef | 1289 | * any modeset locks at all under one condition: It must be guaranteed |
623369e5 DV |
1290 | * that the asynchronous work has either been cancelled (if the driver |
1291 | * supports it, which at least requires that the framebuffers get | |
1292 | * cleaned up with drm_atomic_helper_cleanup_planes()) or completed | |
1293 | * before the new state gets committed on the software side with | |
1294 | * drm_atomic_helper_swap_state(). | |
1295 | * | |
1296 | * This scheme allows new atomic state updates to be prepared and | |
1297 | * checked in parallel to the asynchronous completion of the previous | |
1298 | * update. Which is important since compositors need to figure out the | |
1299 | * composition of the next frame right after having submitted the | |
1300 | * current layout. | |
9f2a7950 DV |
1301 | * |
1302 | * NOTE: Commit work has multiple phases, first hardware commit, then | |
1303 | * cleanup. We want them to overlap, hence need system_unbound_wq to | |
1304 | * make sure work items don't artifically stall on each another. | |
623369e5 DV |
1305 | */ |
1306 | ||
0853695c | 1307 | drm_atomic_state_get(state); |
9f2a7950 DV |
1308 | if (nonblock) |
1309 | queue_work(system_unbound_wq, &state->commit_work); | |
1310 | else | |
1311 | commit_tail(state); | |
623369e5 DV |
1312 | |
1313 | return 0; | |
1314 | } | |
1315 | EXPORT_SYMBOL(drm_atomic_helper_commit); | |
1316 | ||
e8c833a7 | 1317 | /** |
286dbb8d | 1318 | * DOC: implementing nonblocking commit |
e8c833a7 | 1319 | * |
9f2a7950 | 1320 | * Nonblocking atomic commits have to be implemented in the following sequence: |
e8c833a7 DV |
1321 | * |
1322 | * 1. Run drm_atomic_helper_prepare_planes() first. This is the only function | |
1323 | * which commit needs to call which can fail, so we want to run it first and | |
1324 | * synchronously. | |
1325 | * | |
286dbb8d | 1326 | * 2. Synchronize with any outstanding nonblocking commit worker threads which |
e8c833a7 DV |
1327 | * might be affected the new state update. This can be done by either cancelling |
1328 | * or flushing the work items, depending upon whether the driver can deal with | |
1329 | * cancelled updates. Note that it is important to ensure that the framebuffer | |
1330 | * cleanup is still done when cancelling. | |
1331 | * | |
9f2a7950 DV |
1332 | * Asynchronous workers need to have sufficient parallelism to be able to run |
1333 | * different atomic commits on different CRTCs in parallel. The simplest way to | |
1334 | * achive this is by running them on the &system_unbound_wq work queue. Note | |
1335 | * that drivers are not required to split up atomic commits and run an | |
1336 | * individual commit in parallel - userspace is supposed to do that if it cares. | |
1337 | * But it might be beneficial to do that for modesets, since those necessarily | |
1338 | * must be done as one global operation, and enabling or disabling a CRTC can | |
1339 | * take a long time. But even that is not required. | |
e8c833a7 DV |
1340 | * |
1341 | * 3. The software state is updated synchronously with | |
26196f7e | 1342 | * drm_atomic_helper_swap_state(). Doing this under the protection of all modeset |
e8c833a7 | 1343 | * locks means concurrent callers never see inconsistent state. And doing this |
286dbb8d ML |
1344 | * while it's guaranteed that no relevant nonblocking worker runs means that |
1345 | * nonblocking workers do not need grab any locks. Actually they must not grab | |
1346 | * locks, for otherwise the work flushing will deadlock. | |
e8c833a7 DV |
1347 | * |
1348 | * 4. Schedule a work item to do all subsequent steps, using the split-out | |
1349 | * commit helpers: a) pre-plane commit b) plane commit c) post-plane commit and | |
1350 | * then cleaning up the framebuffers after the old framebuffer is no longer | |
1351 | * being displayed. | |
9f2a7950 DV |
1352 | * |
1353 | * The above scheme is implemented in the atomic helper libraries in | |
1354 | * drm_atomic_helper_commit() using a bunch of helper functions. See | |
1355 | * drm_atomic_helper_setup_commit() for a starting point. | |
e8c833a7 DV |
1356 | */ |
1357 | ||
a095caa7 DV |
1358 | static int stall_checks(struct drm_crtc *crtc, bool nonblock) |
1359 | { | |
1360 | struct drm_crtc_commit *commit, *stall_commit = NULL; | |
1361 | bool completed = true; | |
1362 | int i; | |
1363 | long ret = 0; | |
1364 | ||
1365 | spin_lock(&crtc->commit_lock); | |
1366 | i = 0; | |
1367 | list_for_each_entry(commit, &crtc->commit_list, commit_entry) { | |
1368 | if (i == 0) { | |
1369 | completed = try_wait_for_completion(&commit->flip_done); | |
1370 | /* Userspace is not allowed to get ahead of the previous | |
1371 | * commit with nonblocking ones. */ | |
1372 | if (!completed && nonblock) { | |
1373 | spin_unlock(&crtc->commit_lock); | |
1374 | return -EBUSY; | |
1375 | } | |
1376 | } else if (i == 1) { | |
1377 | stall_commit = commit; | |
1378 | drm_crtc_commit_get(stall_commit); | |
a095caa7 | 1379 | break; |
723c3e55 | 1380 | } |
a095caa7 DV |
1381 | |
1382 | i++; | |
1383 | } | |
1384 | spin_unlock(&crtc->commit_lock); | |
1385 | ||
1386 | if (!stall_commit) | |
1387 | return 0; | |
1388 | ||
1389 | /* We don't want to let commits get ahead of cleanup work too much, | |
1390 | * stalling on 2nd previous commit means triple-buffer won't ever stall. | |
1391 | */ | |
723c3e55 | 1392 | ret = wait_for_completion_interruptible_timeout(&stall_commit->cleanup_done, |
a095caa7 DV |
1393 | 10*HZ); |
1394 | if (ret == 0) | |
1395 | DRM_ERROR("[CRTC:%d:%s] cleanup_done timed out\n", | |
1396 | crtc->base.id, crtc->name); | |
1397 | ||
1398 | drm_crtc_commit_put(stall_commit); | |
1399 | ||
1400 | return ret < 0 ? ret : 0; | |
1401 | } | |
1402 | ||
899cc5f1 | 1403 | static void release_crtc_commit(struct completion *completion) |
24835e44 DV |
1404 | { |
1405 | struct drm_crtc_commit *commit = container_of(completion, | |
1406 | typeof(*commit), | |
1407 | flip_done); | |
1408 | ||
1409 | drm_crtc_commit_put(commit); | |
1410 | } | |
1411 | ||
a095caa7 DV |
1412 | /** |
1413 | * drm_atomic_helper_setup_commit - setup possibly nonblocking commit | |
1414 | * @state: new modeset state to be committed | |
1415 | * @nonblock: whether nonblocking behavior is requested. | |
1416 | * | |
1417 | * This function prepares @state to be used by the atomic helper's support for | |
1418 | * nonblocking commits. Drivers using the nonblocking commit infrastructure | |
6806cdf9 DV |
1419 | * should always call this function from their |
1420 | * &drm_mode_config_funcs.atomic_commit hook. | |
a095caa7 DV |
1421 | * |
1422 | * To be able to use this support drivers need to use a few more helper | |
1423 | * functions. drm_atomic_helper_wait_for_dependencies() must be called before | |
1424 | * actually committing the hardware state, and for nonblocking commits this call | |
1425 | * must be placed in the async worker. See also drm_atomic_helper_swap_state() | |
1426 | * and it's stall parameter, for when a driver's commit hooks look at the | |
6806cdf9 | 1427 | * &drm_crtc.state, &drm_plane.state or &drm_connector.state pointer directly. |
a095caa7 DV |
1428 | * |
1429 | * Completion of the hardware commit step must be signalled using | |
1430 | * drm_atomic_helper_commit_hw_done(). After this step the driver is not allowed | |
1431 | * to read or change any permanent software or hardware modeset state. The only | |
1432 | * exception is state protected by other means than &drm_modeset_lock locks. | |
1433 | * Only the free standing @state with pointers to the old state structures can | |
1434 | * be inspected, e.g. to clean up old buffers using | |
1435 | * drm_atomic_helper_cleanup_planes(). | |
1436 | * | |
1437 | * At the very end, before cleaning up @state drivers must call | |
1438 | * drm_atomic_helper_commit_cleanup_done(). | |
1439 | * | |
1440 | * This is all implemented by in drm_atomic_helper_commit(), giving drivers a | |
1441 | * complete and esay-to-use default implementation of the atomic_commit() hook. | |
1442 | * | |
1443 | * The tracking of asynchronously executed and still pending commits is done | |
1444 | * using the core structure &drm_crtc_commit. | |
1445 | * | |
1446 | * By default there's no need to clean up resources allocated by this function | |
1447 | * explicitly: drm_atomic_state_default_clear() will take care of that | |
1448 | * automatically. | |
1449 | * | |
1450 | * Returns: | |
1451 | * | |
1452 | * 0 on success. -EBUSY when userspace schedules nonblocking commits too fast, | |
1453 | * -ENOMEM on allocation failures and -EINTR when a signal is pending. | |
1454 | */ | |
1455 | int drm_atomic_helper_setup_commit(struct drm_atomic_state *state, | |
1456 | bool nonblock) | |
1457 | { | |
1458 | struct drm_crtc *crtc; | |
415c3ac3 | 1459 | struct drm_crtc_state *old_crtc_state, *new_crtc_state; |
a095caa7 DV |
1460 | struct drm_crtc_commit *commit; |
1461 | int i, ret; | |
1462 | ||
415c3ac3 | 1463 | for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) { |
a095caa7 DV |
1464 | commit = kzalloc(sizeof(*commit), GFP_KERNEL); |
1465 | if (!commit) | |
1466 | return -ENOMEM; | |
1467 | ||
1468 | init_completion(&commit->flip_done); | |
1469 | init_completion(&commit->hw_done); | |
1470 | init_completion(&commit->cleanup_done); | |
1471 | INIT_LIST_HEAD(&commit->commit_entry); | |
1472 | kref_init(&commit->ref); | |
1473 | commit->crtc = crtc; | |
1474 | ||
1475 | state->crtcs[i].commit = commit; | |
1476 | ||
1477 | ret = stall_checks(crtc, nonblock); | |
1478 | if (ret) | |
1479 | return ret; | |
1480 | ||
1481 | /* Drivers only send out events when at least either current or | |
1482 | * new CRTC state is active. Complete right away if everything | |
1483 | * stays off. */ | |
415c3ac3 | 1484 | if (!old_crtc_state->active && !new_crtc_state->active) { |
a095caa7 DV |
1485 | complete_all(&commit->flip_done); |
1486 | continue; | |
1487 | } | |
1488 | ||
1489 | /* Legacy cursor updates are fully unsynced. */ | |
1490 | if (state->legacy_cursor_update) { | |
1491 | complete_all(&commit->flip_done); | |
1492 | continue; | |
1493 | } | |
1494 | ||
415c3ac3 | 1495 | if (!new_crtc_state->event) { |
a095caa7 DV |
1496 | commit->event = kzalloc(sizeof(*commit->event), |
1497 | GFP_KERNEL); | |
1498 | if (!commit->event) | |
1499 | return -ENOMEM; | |
1500 | ||
415c3ac3 | 1501 | new_crtc_state->event = commit->event; |
a095caa7 DV |
1502 | } |
1503 | ||
415c3ac3 ML |
1504 | new_crtc_state->event->base.completion = &commit->flip_done; |
1505 | new_crtc_state->event->base.completion_release = release_crtc_commit; | |
24835e44 | 1506 | drm_crtc_commit_get(commit); |
a095caa7 DV |
1507 | } |
1508 | ||
1509 | return 0; | |
1510 | } | |
1511 | EXPORT_SYMBOL(drm_atomic_helper_setup_commit); | |
1512 | ||
1513 | ||
1514 | static struct drm_crtc_commit *preceeding_commit(struct drm_crtc *crtc) | |
1515 | { | |
1516 | struct drm_crtc_commit *commit; | |
1517 | int i = 0; | |
1518 | ||
1519 | list_for_each_entry(commit, &crtc->commit_list, commit_entry) { | |
1520 | /* skip the first entry, that's the current commit */ | |
1521 | if (i == 1) | |
1522 | return commit; | |
1523 | i++; | |
1524 | } | |
1525 | ||
1526 | return NULL; | |
1527 | } | |
1528 | ||
1529 | /** | |
1530 | * drm_atomic_helper_wait_for_dependencies - wait for required preceeding commits | |
1ea0c02e | 1531 | * @old_state: atomic state object with old state structures |
a095caa7 DV |
1532 | * |
1533 | * This function waits for all preceeding commits that touch the same CRTC as | |
1ea0c02e | 1534 | * @old_state to both be committed to the hardware (as signalled by |
a095caa7 | 1535 | * drm_atomic_helper_commit_hw_done) and executed by the hardware (as signalled |
6806cdf9 | 1536 | * by calling drm_crtc_vblank_send_event() on the &drm_crtc_state.event). |
a095caa7 DV |
1537 | * |
1538 | * This is part of the atomic helper support for nonblocking commits, see | |
1539 | * drm_atomic_helper_setup_commit() for an overview. | |
1540 | */ | |
1ea0c02e | 1541 | void drm_atomic_helper_wait_for_dependencies(struct drm_atomic_state *old_state) |
a095caa7 DV |
1542 | { |
1543 | struct drm_crtc *crtc; | |
415c3ac3 | 1544 | struct drm_crtc_state *new_crtc_state; |
a095caa7 DV |
1545 | struct drm_crtc_commit *commit; |
1546 | int i; | |
1547 | long ret; | |
1548 | ||
415c3ac3 | 1549 | for_each_new_crtc_in_state(old_state, crtc, new_crtc_state, i) { |
a095caa7 DV |
1550 | spin_lock(&crtc->commit_lock); |
1551 | commit = preceeding_commit(crtc); | |
1552 | if (commit) | |
1553 | drm_crtc_commit_get(commit); | |
1554 | spin_unlock(&crtc->commit_lock); | |
1555 | ||
1556 | if (!commit) | |
1557 | continue; | |
1558 | ||
1559 | ret = wait_for_completion_timeout(&commit->hw_done, | |
1560 | 10*HZ); | |
1561 | if (ret == 0) | |
1562 | DRM_ERROR("[CRTC:%d:%s] hw_done timed out\n", | |
1563 | crtc->base.id, crtc->name); | |
1564 | ||
1565 | /* Currently no support for overwriting flips, hence | |
1566 | * stall for previous one to execute completely. */ | |
1567 | ret = wait_for_completion_timeout(&commit->flip_done, | |
1568 | 10*HZ); | |
1569 | if (ret == 0) | |
1570 | DRM_ERROR("[CRTC:%d:%s] flip_done timed out\n", | |
1571 | crtc->base.id, crtc->name); | |
1572 | ||
1573 | drm_crtc_commit_put(commit); | |
1574 | } | |
1575 | } | |
1576 | EXPORT_SYMBOL(drm_atomic_helper_wait_for_dependencies); | |
1577 | ||
1578 | /** | |
1579 | * drm_atomic_helper_commit_hw_done - setup possible nonblocking commit | |
1ea0c02e | 1580 | * @old_state: atomic state object with old state structures |
a095caa7 DV |
1581 | * |
1582 | * This function is used to signal completion of the hardware commit step. After | |
1583 | * this step the driver is not allowed to read or change any permanent software | |
1584 | * or hardware modeset state. The only exception is state protected by other | |
1585 | * means than &drm_modeset_lock locks. | |
1586 | * | |
1587 | * Drivers should try to postpone any expensive or delayed cleanup work after | |
1588 | * this function is called. | |
1589 | * | |
1590 | * This is part of the atomic helper support for nonblocking commits, see | |
1591 | * drm_atomic_helper_setup_commit() for an overview. | |
1592 | */ | |
1ea0c02e | 1593 | void drm_atomic_helper_commit_hw_done(struct drm_atomic_state *old_state) |
a095caa7 DV |
1594 | { |
1595 | struct drm_crtc *crtc; | |
415c3ac3 | 1596 | struct drm_crtc_state *new_crtc_state; |
a095caa7 DV |
1597 | struct drm_crtc_commit *commit; |
1598 | int i; | |
1599 | ||
415c3ac3 | 1600 | for_each_new_crtc_in_state(old_state, crtc, new_crtc_state, i) { |
1ea0c02e | 1601 | commit = old_state->crtcs[i].commit; |
a095caa7 DV |
1602 | if (!commit) |
1603 | continue; | |
1604 | ||
1605 | /* backend must have consumed any event by now */ | |
415c3ac3 | 1606 | WARN_ON(new_crtc_state->event); |
a095caa7 DV |
1607 | spin_lock(&crtc->commit_lock); |
1608 | complete_all(&commit->hw_done); | |
1609 | spin_unlock(&crtc->commit_lock); | |
1610 | } | |
1611 | } | |
1612 | EXPORT_SYMBOL(drm_atomic_helper_commit_hw_done); | |
1613 | ||
1614 | /** | |
1615 | * drm_atomic_helper_commit_cleanup_done - signal completion of commit | |
1ea0c02e | 1616 | * @old_state: atomic state object with old state structures |
a095caa7 | 1617 | * |
1ea0c02e DV |
1618 | * This signals completion of the atomic update @old_state, including any |
1619 | * cleanup work. If used, it must be called right before calling | |
0853695c | 1620 | * drm_atomic_state_put(). |
a095caa7 DV |
1621 | * |
1622 | * This is part of the atomic helper support for nonblocking commits, see | |
1623 | * drm_atomic_helper_setup_commit() for an overview. | |
1624 | */ | |
1ea0c02e | 1625 | void drm_atomic_helper_commit_cleanup_done(struct drm_atomic_state *old_state) |
a095caa7 DV |
1626 | { |
1627 | struct drm_crtc *crtc; | |
415c3ac3 | 1628 | struct drm_crtc_state *new_crtc_state; |
a095caa7 DV |
1629 | struct drm_crtc_commit *commit; |
1630 | int i; | |
1631 | long ret; | |
1632 | ||
415c3ac3 | 1633 | for_each_new_crtc_in_state(old_state, crtc, new_crtc_state, i) { |
1ea0c02e | 1634 | commit = old_state->crtcs[i].commit; |
a095caa7 DV |
1635 | if (WARN_ON(!commit)) |
1636 | continue; | |
1637 | ||
1638 | spin_lock(&crtc->commit_lock); | |
1639 | complete_all(&commit->cleanup_done); | |
1640 | WARN_ON(!try_wait_for_completion(&commit->hw_done)); | |
1641 | ||
1642 | /* commit_list borrows our reference, need to remove before we | |
1643 | * clean up our drm_atomic_state. But only after it actually | |
1644 | * completed, otherwise subsequent commits won't stall properly. */ | |
7deef7f1 DV |
1645 | if (try_wait_for_completion(&commit->flip_done)) |
1646 | goto del_commit; | |
a095caa7 DV |
1647 | |
1648 | spin_unlock(&crtc->commit_lock); | |
1649 | ||
1650 | /* We must wait for the vblank event to signal our completion | |
1651 | * before releasing our reference, since the vblank work does | |
1652 | * not hold a reference of its own. */ | |
1653 | ret = wait_for_completion_timeout(&commit->flip_done, | |
1654 | 10*HZ); | |
1655 | if (ret == 0) | |
1656 | DRM_ERROR("[CRTC:%d:%s] flip_done timed out\n", | |
1657 | crtc->base.id, crtc->name); | |
1658 | ||
1659 | spin_lock(&crtc->commit_lock); | |
7deef7f1 | 1660 | del_commit: |
a095caa7 DV |
1661 | list_del(&commit->commit_entry); |
1662 | spin_unlock(&crtc->commit_lock); | |
1663 | } | |
1664 | } | |
1665 | EXPORT_SYMBOL(drm_atomic_helper_commit_cleanup_done); | |
1666 | ||
c2fcd274 | 1667 | /** |
2e3afd47 | 1668 | * drm_atomic_helper_prepare_planes - prepare plane resources before commit |
c2fcd274 | 1669 | * @dev: DRM device |
2e3afd47 | 1670 | * @state: atomic state object with new state structures |
c2fcd274 DV |
1671 | * |
1672 | * This function prepares plane state, specifically framebuffers, for the new | |
6806cdf9 DV |
1673 | * configuration, by calling &drm_plane_helper_funcs.prepare_fb. If any failure |
1674 | * is encountered this function will call &drm_plane_helper_funcs.cleanup_fb on | |
1675 | * any already successfully prepared framebuffer. | |
c2fcd274 DV |
1676 | * |
1677 | * Returns: | |
1678 | * 0 on success, negative error code on failure. | |
1679 | */ | |
1680 | int drm_atomic_helper_prepare_planes(struct drm_device *dev, | |
1681 | struct drm_atomic_state *state) | |
1682 | { | |
be9174a4 | 1683 | struct drm_plane *plane; |
415c3ac3 | 1684 | struct drm_plane_state *new_plane_state; |
be9174a4 | 1685 | int ret, i, j; |
c2fcd274 | 1686 | |
415c3ac3 | 1687 | for_each_new_plane_in_state(state, plane, new_plane_state, i) { |
b5ceff20 | 1688 | const struct drm_plane_helper_funcs *funcs; |
c2fcd274 DV |
1689 | |
1690 | funcs = plane->helper_private; | |
1691 | ||
844f9111 | 1692 | if (funcs->prepare_fb) { |
415c3ac3 | 1693 | ret = funcs->prepare_fb(plane, new_plane_state); |
c2fcd274 DV |
1694 | if (ret) |
1695 | goto fail; | |
1696 | } | |
1697 | } | |
1698 | ||
1699 | return 0; | |
1700 | ||
1701 | fail: | |
415c3ac3 | 1702 | for_each_new_plane_in_state(state, plane, new_plane_state, j) { |
b5ceff20 | 1703 | const struct drm_plane_helper_funcs *funcs; |
c2fcd274 | 1704 | |
be9174a4 | 1705 | if (j >= i) |
c2fcd274 DV |
1706 | continue; |
1707 | ||
1708 | funcs = plane->helper_private; | |
1709 | ||
844f9111 | 1710 | if (funcs->cleanup_fb) |
415c3ac3 | 1711 | funcs->cleanup_fb(plane, new_plane_state); |
c2fcd274 DV |
1712 | } |
1713 | ||
1714 | return ret; | |
1715 | } | |
1716 | EXPORT_SYMBOL(drm_atomic_helper_prepare_planes); | |
1717 | ||
7135ac54 | 1718 | static bool plane_crtc_active(const struct drm_plane_state *state) |
aef9dbb8 DV |
1719 | { |
1720 | return state->crtc && state->crtc->state->active; | |
1721 | } | |
1722 | ||
c2fcd274 DV |
1723 | /** |
1724 | * drm_atomic_helper_commit_planes - commit plane state | |
1725 | * @dev: DRM device | |
b0fcfc89 | 1726 | * @old_state: atomic state object with old state structures |
2b58e98d | 1727 | * @flags: flags for committing plane state |
c2fcd274 DV |
1728 | * |
1729 | * This function commits the new plane state using the plane and atomic helper | |
1730 | * functions for planes and crtcs. It assumes that the atomic state has already | |
1731 | * been pushed into the relevant object state pointers, since this step can no | |
1732 | * longer fail. | |
1733 | * | |
b0fcfc89 | 1734 | * It still requires the global state object @old_state to know which planes and |
c2fcd274 | 1735 | * crtcs need to be updated though. |
de28d021 ML |
1736 | * |
1737 | * Note that this function does all plane updates across all CRTCs in one step. | |
1738 | * If the hardware can't support this approach look at | |
1739 | * drm_atomic_helper_commit_planes_on_crtc() instead. | |
6e48ae32 DV |
1740 | * |
1741 | * Plane parameters can be updated by applications while the associated CRTC is | |
1742 | * disabled. The DRM/KMS core will store the parameters in the plane state, | |
1743 | * which will be available to the driver when the CRTC is turned on. As a result | |
1744 | * most drivers don't need to be immediately notified of plane updates for a | |
1745 | * disabled CRTC. | |
1746 | * | |
2b58e98d LY |
1747 | * Unless otherwise needed, drivers are advised to set the ACTIVE_ONLY flag in |
1748 | * @flags in order not to receive plane update notifications related to a | |
1749 | * disabled CRTC. This avoids the need to manually ignore plane updates in | |
6e48ae32 DV |
1750 | * driver code when the driver and/or hardware can't or just don't need to deal |
1751 | * with updates on disabled CRTCs, for example when supporting runtime PM. | |
1752 | * | |
2b58e98d LY |
1753 | * Drivers may set the NO_DISABLE_AFTER_MODESET flag in @flags if the relevant |
1754 | * display controllers require to disable a CRTC's planes when the CRTC is | |
6806cdf9 DV |
1755 | * disabled. This function would skip the &drm_plane_helper_funcs.atomic_disable |
1756 | * call for a plane if the CRTC of the old plane state needs a modesetting | |
1757 | * operation. Of course, the drivers need to disable the planes in their CRTC | |
1758 | * disable callbacks since no one else would do that. | |
2b58e98d LY |
1759 | * |
1760 | * The drm_atomic_helper_commit() default implementation doesn't set the | |
1761 | * ACTIVE_ONLY flag to most closely match the behaviour of the legacy helpers. | |
1762 | * This should not be copied blindly by drivers. | |
c2fcd274 DV |
1763 | */ |
1764 | void drm_atomic_helper_commit_planes(struct drm_device *dev, | |
aef9dbb8 | 1765 | struct drm_atomic_state *old_state, |
2b58e98d | 1766 | uint32_t flags) |
c2fcd274 | 1767 | { |
df63b999 | 1768 | struct drm_crtc *crtc; |
415c3ac3 | 1769 | struct drm_crtc_state *old_crtc_state, *new_crtc_state; |
df63b999 | 1770 | struct drm_plane *plane; |
415c3ac3 | 1771 | struct drm_plane_state *old_plane_state, *new_plane_state; |
c2fcd274 | 1772 | int i; |
2b58e98d LY |
1773 | bool active_only = flags & DRM_PLANE_COMMIT_ACTIVE_ONLY; |
1774 | bool no_disable = flags & DRM_PLANE_COMMIT_NO_DISABLE_AFTER_MODESET; | |
c2fcd274 | 1775 | |
415c3ac3 | 1776 | for_each_oldnew_crtc_in_state(old_state, crtc, old_crtc_state, new_crtc_state, i) { |
b5ceff20 | 1777 | const struct drm_crtc_helper_funcs *funcs; |
c2fcd274 DV |
1778 | |
1779 | funcs = crtc->helper_private; | |
1780 | ||
1781 | if (!funcs || !funcs->atomic_begin) | |
1782 | continue; | |
1783 | ||
415c3ac3 | 1784 | if (active_only && !new_crtc_state->active) |
aef9dbb8 DV |
1785 | continue; |
1786 | ||
613d2b27 | 1787 | funcs->atomic_begin(crtc, old_crtc_state); |
c2fcd274 DV |
1788 | } |
1789 | ||
415c3ac3 | 1790 | for_each_oldnew_plane_in_state(old_state, plane, old_plane_state, new_plane_state, i) { |
b5ceff20 | 1791 | const struct drm_plane_helper_funcs *funcs; |
216c59d6 | 1792 | bool disabling; |
c2fcd274 DV |
1793 | |
1794 | funcs = plane->helper_private; | |
1795 | ||
3cad4b68 | 1796 | if (!funcs) |
c2fcd274 DV |
1797 | continue; |
1798 | ||
51ffa12d ML |
1799 | disabling = drm_atomic_plane_disabling(old_plane_state, |
1800 | new_plane_state); | |
216c59d6 LP |
1801 | |
1802 | if (active_only) { | |
1803 | /* | |
1804 | * Skip planes related to inactive CRTCs. If the plane | |
1805 | * is enabled use the state of the current CRTC. If the | |
1806 | * plane is being disabled use the state of the old | |
1807 | * CRTC to avoid skipping planes being disabled on an | |
1808 | * active CRTC. | |
1809 | */ | |
415c3ac3 | 1810 | if (!disabling && !plane_crtc_active(new_plane_state)) |
216c59d6 LP |
1811 | continue; |
1812 | if (disabling && !plane_crtc_active(old_plane_state)) | |
1813 | continue; | |
1814 | } | |
aef9dbb8 | 1815 | |
407b8bd9 TR |
1816 | /* |
1817 | * Special-case disabling the plane if drivers support it. | |
1818 | */ | |
2b58e98d LY |
1819 | if (disabling && funcs->atomic_disable) { |
1820 | struct drm_crtc_state *crtc_state; | |
1821 | ||
1822 | crtc_state = old_plane_state->crtc->state; | |
1823 | ||
1824 | if (drm_atomic_crtc_needs_modeset(crtc_state) && | |
1825 | no_disable) | |
1826 | continue; | |
1827 | ||
407b8bd9 | 1828 | funcs->atomic_disable(plane, old_plane_state); |
415c3ac3 | 1829 | } else if (new_plane_state->crtc || disabling) { |
407b8bd9 | 1830 | funcs->atomic_update(plane, old_plane_state); |
2b58e98d | 1831 | } |
c2fcd274 DV |
1832 | } |
1833 | ||
415c3ac3 | 1834 | for_each_oldnew_crtc_in_state(old_state, crtc, old_crtc_state, new_crtc_state, i) { |
b5ceff20 | 1835 | const struct drm_crtc_helper_funcs *funcs; |
c2fcd274 DV |
1836 | |
1837 | funcs = crtc->helper_private; | |
1838 | ||
1839 | if (!funcs || !funcs->atomic_flush) | |
1840 | continue; | |
1841 | ||
415c3ac3 | 1842 | if (active_only && !new_crtc_state->active) |
aef9dbb8 DV |
1843 | continue; |
1844 | ||
613d2b27 | 1845 | funcs->atomic_flush(crtc, old_crtc_state); |
c2fcd274 DV |
1846 | } |
1847 | } | |
1848 | EXPORT_SYMBOL(drm_atomic_helper_commit_planes); | |
1849 | ||
de28d021 ML |
1850 | /** |
1851 | * drm_atomic_helper_commit_planes_on_crtc - commit plane state for a crtc | |
1852 | * @old_crtc_state: atomic state object with the old crtc state | |
1853 | * | |
1854 | * This function commits the new plane state using the plane and atomic helper | |
1855 | * functions for planes on the specific crtc. It assumes that the atomic state | |
1856 | * has already been pushed into the relevant object state pointers, since this | |
1857 | * step can no longer fail. | |
1858 | * | |
1859 | * This function is useful when plane updates should be done crtc-by-crtc | |
1860 | * instead of one global step like drm_atomic_helper_commit_planes() does. | |
1861 | * | |
1862 | * This function can only be savely used when planes are not allowed to move | |
1863 | * between different CRTCs because this function doesn't handle inter-CRTC | |
1864 | * depencies. Callers need to ensure that either no such depencies exist, | |
1865 | * resolve them through ordering of commit calls or through some other means. | |
1866 | */ | |
1867 | void | |
1868 | drm_atomic_helper_commit_planes_on_crtc(struct drm_crtc_state *old_crtc_state) | |
1869 | { | |
1870 | const struct drm_crtc_helper_funcs *crtc_funcs; | |
1871 | struct drm_crtc *crtc = old_crtc_state->crtc; | |
1872 | struct drm_atomic_state *old_state = old_crtc_state->state; | |
1873 | struct drm_plane *plane; | |
1874 | unsigned plane_mask; | |
1875 | ||
1876 | plane_mask = old_crtc_state->plane_mask; | |
1877 | plane_mask |= crtc->state->plane_mask; | |
1878 | ||
1879 | crtc_funcs = crtc->helper_private; | |
1880 | if (crtc_funcs && crtc_funcs->atomic_begin) | |
613d2b27 | 1881 | crtc_funcs->atomic_begin(crtc, old_crtc_state); |
de28d021 ML |
1882 | |
1883 | drm_for_each_plane_mask(plane, crtc->dev, plane_mask) { | |
1884 | struct drm_plane_state *old_plane_state = | |
b4d93679 | 1885 | drm_atomic_get_old_plane_state(old_state, plane); |
de28d021 ML |
1886 | const struct drm_plane_helper_funcs *plane_funcs; |
1887 | ||
1888 | plane_funcs = plane->helper_private; | |
1889 | ||
1890 | if (!old_plane_state || !plane_funcs) | |
1891 | continue; | |
1892 | ||
1893 | WARN_ON(plane->state->crtc && plane->state->crtc != crtc); | |
1894 | ||
51ffa12d | 1895 | if (drm_atomic_plane_disabling(old_plane_state, plane->state) && |
de28d021 ML |
1896 | plane_funcs->atomic_disable) |
1897 | plane_funcs->atomic_disable(plane, old_plane_state); | |
1898 | else if (plane->state->crtc || | |
51ffa12d | 1899 | drm_atomic_plane_disabling(old_plane_state, plane->state)) |
de28d021 ML |
1900 | plane_funcs->atomic_update(plane, old_plane_state); |
1901 | } | |
1902 | ||
1903 | if (crtc_funcs && crtc_funcs->atomic_flush) | |
613d2b27 | 1904 | crtc_funcs->atomic_flush(crtc, old_crtc_state); |
de28d021 ML |
1905 | } |
1906 | EXPORT_SYMBOL(drm_atomic_helper_commit_planes_on_crtc); | |
1907 | ||
6753ba97 JS |
1908 | /** |
1909 | * drm_atomic_helper_disable_planes_on_crtc - helper to disable CRTC's planes | |
28500291 | 1910 | * @old_crtc_state: atomic state object with the old CRTC state |
6753ba97 JS |
1911 | * @atomic: if set, synchronize with CRTC's atomic_begin/flush hooks |
1912 | * | |
1913 | * Disables all planes associated with the given CRTC. This can be | |
28500291 LY |
1914 | * used for instance in the CRTC helper atomic_disable callback to disable |
1915 | * all planes. | |
6753ba97 JS |
1916 | * |
1917 | * If the atomic-parameter is set the function calls the CRTC's | |
1918 | * atomic_begin hook before and atomic_flush hook after disabling the | |
1919 | * planes. | |
1920 | * | |
1921 | * It is a bug to call this function without having implemented the | |
6806cdf9 | 1922 | * &drm_plane_helper_funcs.atomic_disable plane hook. |
6753ba97 | 1923 | */ |
28500291 LY |
1924 | void |
1925 | drm_atomic_helper_disable_planes_on_crtc(struct drm_crtc_state *old_crtc_state, | |
1926 | bool atomic) | |
6753ba97 | 1927 | { |
28500291 | 1928 | struct drm_crtc *crtc = old_crtc_state->crtc; |
6753ba97 JS |
1929 | const struct drm_crtc_helper_funcs *crtc_funcs = |
1930 | crtc->helper_private; | |
1931 | struct drm_plane *plane; | |
1932 | ||
1933 | if (atomic && crtc_funcs && crtc_funcs->atomic_begin) | |
1934 | crtc_funcs->atomic_begin(crtc, NULL); | |
1935 | ||
28500291 | 1936 | drm_atomic_crtc_state_for_each_plane(plane, old_crtc_state) { |
6753ba97 JS |
1937 | const struct drm_plane_helper_funcs *plane_funcs = |
1938 | plane->helper_private; | |
1939 | ||
28500291 | 1940 | if (!plane_funcs) |
6753ba97 JS |
1941 | continue; |
1942 | ||
1943 | WARN_ON(!plane_funcs->atomic_disable); | |
1944 | if (plane_funcs->atomic_disable) | |
1945 | plane_funcs->atomic_disable(plane, NULL); | |
1946 | } | |
1947 | ||
1948 | if (atomic && crtc_funcs && crtc_funcs->atomic_flush) | |
1949 | crtc_funcs->atomic_flush(crtc, NULL); | |
1950 | } | |
1951 | EXPORT_SYMBOL(drm_atomic_helper_disable_planes_on_crtc); | |
1952 | ||
c2fcd274 DV |
1953 | /** |
1954 | * drm_atomic_helper_cleanup_planes - cleanup plane resources after commit | |
1955 | * @dev: DRM device | |
1956 | * @old_state: atomic state object with old state structures | |
1957 | * | |
1958 | * This function cleans up plane state, specifically framebuffers, from the old | |
1959 | * configuration. Hence the old configuration must be perserved in @old_state to | |
1960 | * be able to call this function. | |
1961 | * | |
1962 | * This function must also be called on the new state when the atomic update | |
1963 | * fails at any point after calling drm_atomic_helper_prepare_planes(). | |
1964 | */ | |
1965 | void drm_atomic_helper_cleanup_planes(struct drm_device *dev, | |
1966 | struct drm_atomic_state *old_state) | |
1967 | { | |
df63b999 | 1968 | struct drm_plane *plane; |
415c3ac3 | 1969 | struct drm_plane_state *old_plane_state, *new_plane_state; |
c2fcd274 DV |
1970 | int i; |
1971 | ||
415c3ac3 | 1972 | for_each_oldnew_plane_in_state(old_state, plane, old_plane_state, new_plane_state, i) { |
b5ceff20 | 1973 | const struct drm_plane_helper_funcs *funcs; |
415c3ac3 ML |
1974 | struct drm_plane_state *plane_state; |
1975 | ||
1976 | /* | |
1977 | * This might be called before swapping when commit is aborted, | |
1978 | * in which case we have to cleanup the new state. | |
1979 | */ | |
1980 | if (old_plane_state == plane->state) | |
1981 | plane_state = new_plane_state; | |
1982 | else | |
1983 | plane_state = old_plane_state; | |
c2fcd274 | 1984 | |
c2fcd274 DV |
1985 | funcs = plane->helper_private; |
1986 | ||
844f9111 ML |
1987 | if (funcs->cleanup_fb) |
1988 | funcs->cleanup_fb(plane, plane_state); | |
c2fcd274 DV |
1989 | } |
1990 | } | |
1991 | EXPORT_SYMBOL(drm_atomic_helper_cleanup_planes); | |
1992 | ||
1993 | /** | |
1994 | * drm_atomic_helper_swap_state - store atomic state into current sw state | |
c2fcd274 | 1995 | * @state: atomic state |
5e84c269 | 1996 | * @stall: stall for proceeding commits |
c2fcd274 DV |
1997 | * |
1998 | * This function stores the atomic state into the current state pointers in all | |
1999 | * driver objects. It should be called after all failing steps have been done | |
2000 | * and succeeded, but before the actual hardware state is committed. | |
2001 | * | |
2002 | * For cleanup and error recovery the current state for all changed objects will | |
2003 | * be swaped into @state. | |
2004 | * | |
2005 | * With that sequence it fits perfectly into the plane prepare/cleanup sequence: | |
2006 | * | |
2007 | * 1. Call drm_atomic_helper_prepare_planes() with the staged atomic state. | |
2008 | * | |
2009 | * 2. Do any other steps that might fail. | |
2010 | * | |
2011 | * 3. Put the staged state into the current state pointers with this function. | |
2012 | * | |
2013 | * 4. Actually commit the hardware state. | |
2014 | * | |
26196f7e | 2015 | * 5. Call drm_atomic_helper_cleanup_planes() with @state, which since step 3 |
c2fcd274 | 2016 | * contains the old state. Also do any other cleanup required with that state. |
a095caa7 DV |
2017 | * |
2018 | * @stall must be set when nonblocking commits for this driver directly access | |
6806cdf9 DV |
2019 | * the &drm_plane.state, &drm_crtc.state or &drm_connector.state pointer. With |
2020 | * the current atomic helpers this is almost always the case, since the helpers | |
a095caa7 | 2021 | * don't pass the right state structures to the callbacks. |
c2fcd274 | 2022 | */ |
5e84c269 DV |
2023 | void drm_atomic_helper_swap_state(struct drm_atomic_state *state, |
2024 | bool stall) | |
c2fcd274 DV |
2025 | { |
2026 | int i; | |
a095caa7 | 2027 | long ret; |
be9174a4 | 2028 | struct drm_connector *connector; |
415c3ac3 | 2029 | struct drm_connector_state *old_conn_state, *new_conn_state; |
be9174a4 | 2030 | struct drm_crtc *crtc; |
415c3ac3 | 2031 | struct drm_crtc_state *old_crtc_state, *new_crtc_state; |
be9174a4 | 2032 | struct drm_plane *plane; |
415c3ac3 | 2033 | struct drm_plane_state *old_plane_state, *new_plane_state; |
a095caa7 DV |
2034 | struct drm_crtc_commit *commit; |
2035 | ||
2036 | if (stall) { | |
415c3ac3 | 2037 | for_each_new_crtc_in_state(state, crtc, new_crtc_state, i) { |
a095caa7 DV |
2038 | spin_lock(&crtc->commit_lock); |
2039 | commit = list_first_entry_or_null(&crtc->commit_list, | |
2040 | struct drm_crtc_commit, commit_entry); | |
2041 | if (commit) | |
2042 | drm_crtc_commit_get(commit); | |
2043 | spin_unlock(&crtc->commit_lock); | |
2044 | ||
2045 | if (!commit) | |
2046 | continue; | |
2047 | ||
2048 | ret = wait_for_completion_timeout(&commit->hw_done, | |
2049 | 10*HZ); | |
2050 | if (ret == 0) | |
2051 | DRM_ERROR("[CRTC:%d:%s] hw_done timed out\n", | |
2052 | crtc->base.id, crtc->name); | |
2053 | drm_crtc_commit_put(commit); | |
2054 | } | |
2055 | } | |
c2fcd274 | 2056 | |
415c3ac3 | 2057 | for_each_oldnew_connector_in_state(state, connector, old_conn_state, new_conn_state, i) { |
581e49fe ML |
2058 | WARN_ON(connector->state != old_conn_state); |
2059 | ||
415c3ac3 ML |
2060 | old_conn_state->state = state; |
2061 | new_conn_state->state = NULL; | |
2062 | ||
2063 | state->connectors[i].state = old_conn_state; | |
2064 | connector->state = new_conn_state; | |
c2fcd274 DV |
2065 | } |
2066 | ||
415c3ac3 | 2067 | for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) { |
581e49fe ML |
2068 | WARN_ON(crtc->state != old_crtc_state); |
2069 | ||
415c3ac3 ML |
2070 | old_crtc_state->state = state; |
2071 | new_crtc_state->state = NULL; | |
2072 | ||
2073 | state->crtcs[i].state = old_crtc_state; | |
2074 | crtc->state = new_crtc_state; | |
a095caa7 DV |
2075 | |
2076 | if (state->crtcs[i].commit) { | |
2077 | spin_lock(&crtc->commit_lock); | |
2078 | list_add(&state->crtcs[i].commit->commit_entry, | |
2079 | &crtc->commit_list); | |
2080 | spin_unlock(&crtc->commit_lock); | |
2081 | ||
2082 | state->crtcs[i].commit->event = NULL; | |
2083 | } | |
c2fcd274 DV |
2084 | } |
2085 | ||
415c3ac3 | 2086 | for_each_oldnew_plane_in_state(state, plane, old_plane_state, new_plane_state, i) { |
581e49fe ML |
2087 | WARN_ON(plane->state != old_plane_state); |
2088 | ||
415c3ac3 ML |
2089 | old_plane_state->state = state; |
2090 | new_plane_state->state = NULL; | |
2091 | ||
2092 | state->planes[i].state = old_plane_state; | |
2093 | plane->state = new_plane_state; | |
c2fcd274 DV |
2094 | } |
2095 | } | |
2096 | EXPORT_SYMBOL(drm_atomic_helper_swap_state); | |
042652ed DV |
2097 | |
2098 | /** | |
2099 | * drm_atomic_helper_update_plane - Helper for primary plane update using atomic | |
2100 | * @plane: plane object to update | |
2101 | * @crtc: owning CRTC of owning plane | |
2102 | * @fb: framebuffer to flip onto plane | |
2103 | * @crtc_x: x offset of primary plane on crtc | |
2104 | * @crtc_y: y offset of primary plane on crtc | |
2105 | * @crtc_w: width of primary plane rectangle on crtc | |
2106 | * @crtc_h: height of primary plane rectangle on crtc | |
2107 | * @src_x: x offset of @fb for panning | |
2108 | * @src_y: y offset of @fb for panning | |
2109 | * @src_w: width of source rectangle in @fb | |
2110 | * @src_h: height of source rectangle in @fb | |
34a2ab5e | 2111 | * @ctx: lock acquire context |
042652ed DV |
2112 | * |
2113 | * Provides a default plane update handler using the atomic driver interface. | |
2114 | * | |
2115 | * RETURNS: | |
2116 | * Zero on success, error code on failure | |
2117 | */ | |
2118 | int drm_atomic_helper_update_plane(struct drm_plane *plane, | |
2119 | struct drm_crtc *crtc, | |
2120 | struct drm_framebuffer *fb, | |
2121 | int crtc_x, int crtc_y, | |
2122 | unsigned int crtc_w, unsigned int crtc_h, | |
2123 | uint32_t src_x, uint32_t src_y, | |
34a2ab5e DV |
2124 | uint32_t src_w, uint32_t src_h, |
2125 | struct drm_modeset_acquire_ctx *ctx) | |
042652ed DV |
2126 | { |
2127 | struct drm_atomic_state *state; | |
2128 | struct drm_plane_state *plane_state; | |
2129 | int ret = 0; | |
2130 | ||
2131 | state = drm_atomic_state_alloc(plane->dev); | |
2132 | if (!state) | |
2133 | return -ENOMEM; | |
2134 | ||
d26f96c7 | 2135 | state->acquire_ctx = ctx; |
042652ed DV |
2136 | plane_state = drm_atomic_get_plane_state(state, plane); |
2137 | if (IS_ERR(plane_state)) { | |
2138 | ret = PTR_ERR(plane_state); | |
2139 | goto fail; | |
2140 | } | |
2141 | ||
07cc0ef6 | 2142 | ret = drm_atomic_set_crtc_for_plane(plane_state, crtc); |
042652ed DV |
2143 | if (ret != 0) |
2144 | goto fail; | |
321ebf04 | 2145 | drm_atomic_set_fb_for_plane(plane_state, fb); |
042652ed DV |
2146 | plane_state->crtc_x = crtc_x; |
2147 | plane_state->crtc_y = crtc_y; | |
042652ed | 2148 | plane_state->crtc_w = crtc_w; |
02e6f379 | 2149 | plane_state->crtc_h = crtc_h; |
042652ed DV |
2150 | plane_state->src_x = src_x; |
2151 | plane_state->src_y = src_y; | |
042652ed | 2152 | plane_state->src_w = src_w; |
02e6f379 | 2153 | plane_state->src_h = src_h; |
042652ed | 2154 | |
3671c580 DV |
2155 | if (plane == crtc->cursor) |
2156 | state->legacy_cursor_update = true; | |
2157 | ||
042652ed | 2158 | ret = drm_atomic_commit(state); |
042652ed | 2159 | fail: |
0853695c | 2160 | drm_atomic_state_put(state); |
042652ed | 2161 | return ret; |
042652ed DV |
2162 | } |
2163 | EXPORT_SYMBOL(drm_atomic_helper_update_plane); | |
2164 | ||
2165 | /** | |
2166 | * drm_atomic_helper_disable_plane - Helper for primary plane disable using * atomic | |
2167 | * @plane: plane to disable | |
19315294 | 2168 | * @ctx: lock acquire context |
042652ed DV |
2169 | * |
2170 | * Provides a default plane disable handler using the atomic driver interface. | |
2171 | * | |
2172 | * RETURNS: | |
2173 | * Zero on success, error code on failure | |
2174 | */ | |
19315294 DV |
2175 | int drm_atomic_helper_disable_plane(struct drm_plane *plane, |
2176 | struct drm_modeset_acquire_ctx *ctx) | |
042652ed DV |
2177 | { |
2178 | struct drm_atomic_state *state; | |
2179 | struct drm_plane_state *plane_state; | |
2180 | int ret = 0; | |
2181 | ||
2182 | state = drm_atomic_state_alloc(plane->dev); | |
2183 | if (!state) | |
2184 | return -ENOMEM; | |
2185 | ||
d26f96c7 | 2186 | state->acquire_ctx = ctx; |
042652ed DV |
2187 | plane_state = drm_atomic_get_plane_state(state, plane); |
2188 | if (IS_ERR(plane_state)) { | |
2189 | ret = PTR_ERR(plane_state); | |
2190 | goto fail; | |
2191 | } | |
2192 | ||
24e79d0d ML |
2193 | if (plane_state->crtc && (plane == plane->crtc->cursor)) |
2194 | plane_state->state->legacy_cursor_update = true; | |
2195 | ||
bbb1e524 | 2196 | ret = __drm_atomic_helper_disable_plane(plane, plane_state); |
042652ed DV |
2197 | if (ret != 0) |
2198 | goto fail; | |
f02ad907 | 2199 | |
042652ed | 2200 | ret = drm_atomic_commit(state); |
042652ed | 2201 | fail: |
0853695c | 2202 | drm_atomic_state_put(state); |
042652ed | 2203 | return ret; |
042652ed DV |
2204 | } |
2205 | EXPORT_SYMBOL(drm_atomic_helper_disable_plane); | |
2206 | ||
bbb1e524 RC |
2207 | /* just used from fb-helper and atomic-helper: */ |
2208 | int __drm_atomic_helper_disable_plane(struct drm_plane *plane, | |
2209 | struct drm_plane_state *plane_state) | |
2210 | { | |
2211 | int ret; | |
2212 | ||
2213 | ret = drm_atomic_set_crtc_for_plane(plane_state, NULL); | |
2214 | if (ret != 0) | |
2215 | return ret; | |
2216 | ||
2217 | drm_atomic_set_fb_for_plane(plane_state, NULL); | |
2218 | plane_state->crtc_x = 0; | |
2219 | plane_state->crtc_y = 0; | |
bbb1e524 | 2220 | plane_state->crtc_w = 0; |
02e6f379 | 2221 | plane_state->crtc_h = 0; |
bbb1e524 RC |
2222 | plane_state->src_x = 0; |
2223 | plane_state->src_y = 0; | |
bbb1e524 | 2224 | plane_state->src_w = 0; |
02e6f379 | 2225 | plane_state->src_h = 0; |
bbb1e524 | 2226 | |
bbb1e524 RC |
2227 | return 0; |
2228 | } | |
2229 | ||
042652ed DV |
2230 | static int update_output_state(struct drm_atomic_state *state, |
2231 | struct drm_mode_set *set) | |
2232 | { | |
2233 | struct drm_device *dev = set->crtc->dev; | |
df63b999 | 2234 | struct drm_crtc *crtc; |
415c3ac3 | 2235 | struct drm_crtc_state *new_crtc_state; |
df63b999 | 2236 | struct drm_connector *connector; |
415c3ac3 | 2237 | struct drm_connector_state *new_conn_state; |
6ab520a2 | 2238 | int ret, i; |
042652ed DV |
2239 | |
2240 | ret = drm_modeset_lock(&dev->mode_config.connection_mutex, | |
2241 | state->acquire_ctx); | |
2242 | if (ret) | |
2243 | return ret; | |
2244 | ||
6ab520a2 ML |
2245 | /* First disable all connectors on the target crtc. */ |
2246 | ret = drm_atomic_add_affected_connectors(state, set->crtc); | |
2247 | if (ret) | |
2248 | return ret; | |
042652ed | 2249 | |
415c3ac3 ML |
2250 | for_each_new_connector_in_state(state, connector, new_conn_state, i) { |
2251 | if (new_conn_state->crtc == set->crtc) { | |
2252 | ret = drm_atomic_set_crtc_for_connector(new_conn_state, | |
042652ed DV |
2253 | NULL); |
2254 | if (ret) | |
2255 | return ret; | |
415c3ac3 | 2256 | |
40ee6fbe | 2257 | /* Make sure legacy setCrtc always re-trains */ |
415c3ac3 | 2258 | new_conn_state->link_status = DRM_LINK_STATUS_GOOD; |
042652ed | 2259 | } |
6ab520a2 | 2260 | } |
042652ed | 2261 | |
6ab520a2 ML |
2262 | /* Then set all connectors from set->connectors on the target crtc */ |
2263 | for (i = 0; i < set->num_connectors; i++) { | |
415c3ac3 | 2264 | new_conn_state = drm_atomic_get_connector_state(state, |
6ab520a2 | 2265 | set->connectors[i]); |
415c3ac3 ML |
2266 | if (IS_ERR(new_conn_state)) |
2267 | return PTR_ERR(new_conn_state); | |
6ab520a2 | 2268 | |
415c3ac3 | 2269 | ret = drm_atomic_set_crtc_for_connector(new_conn_state, |
6ab520a2 ML |
2270 | set->crtc); |
2271 | if (ret) | |
2272 | return ret; | |
042652ed DV |
2273 | } |
2274 | ||
415c3ac3 | 2275 | for_each_new_crtc_in_state(state, crtc, new_crtc_state, i) { |
042652ed DV |
2276 | /* Don't update ->enable for the CRTC in the set_config request, |
2277 | * since a mismatch would indicate a bug in the upper layers. | |
2278 | * The actual modeset code later on will catch any | |
2279 | * inconsistencies here. */ | |
2280 | if (crtc == set->crtc) | |
2281 | continue; | |
2282 | ||
415c3ac3 ML |
2283 | if (!new_crtc_state->connector_mask) { |
2284 | ret = drm_atomic_set_mode_prop_for_crtc(new_crtc_state, | |
c30f55a7 LP |
2285 | NULL); |
2286 | if (ret < 0) | |
2287 | return ret; | |
2288 | ||
415c3ac3 | 2289 | new_crtc_state->active = false; |
c30f55a7 | 2290 | } |
042652ed DV |
2291 | } |
2292 | ||
2293 | return 0; | |
2294 | } | |
2295 | ||
2296 | /** | |
2297 | * drm_atomic_helper_set_config - set a new config from userspace | |
2298 | * @set: mode set configuration | |
a4eff9aa | 2299 | * @ctx: lock acquisition context |
042652ed DV |
2300 | * |
2301 | * Provides a default crtc set_config handler using the atomic driver interface. | |
2302 | * | |
40ee6fbe MN |
2303 | * NOTE: For backwards compatibility with old userspace this automatically |
2304 | * resets the "link-status" property to GOOD, to force any link | |
2305 | * re-training. The SETCRTC ioctl does not define whether an update does | |
2306 | * need a full modeset or just a plane update, hence we're allowed to do | |
2307 | * that. See also drm_mode_connector_set_link_status_property(). | |
2308 | * | |
042652ed DV |
2309 | * Returns: |
2310 | * Returns 0 on success, negative errno numbers on failure. | |
2311 | */ | |
a4eff9aa DV |
2312 | int drm_atomic_helper_set_config(struct drm_mode_set *set, |
2313 | struct drm_modeset_acquire_ctx *ctx) | |
042652ed DV |
2314 | { |
2315 | struct drm_atomic_state *state; | |
2316 | struct drm_crtc *crtc = set->crtc; | |
042652ed DV |
2317 | int ret = 0; |
2318 | ||
2319 | state = drm_atomic_state_alloc(crtc->dev); | |
2320 | if (!state) | |
2321 | return -ENOMEM; | |
2322 | ||
38b6441e | 2323 | state->acquire_ctx = ctx; |
bbb1e524 RC |
2324 | ret = __drm_atomic_helper_set_config(set, state); |
2325 | if (ret != 0) | |
1fa4da04 | 2326 | goto fail; |
042652ed | 2327 | |
44596b8c ML |
2328 | ret = handle_conflicting_encoders(state, true); |
2329 | if (ret) | |
2330 | return ret; | |
2331 | ||
bbb1e524 | 2332 | ret = drm_atomic_commit(state); |
bbb1e524 | 2333 | |
1fa4da04 | 2334 | fail: |
0853695c | 2335 | drm_atomic_state_put(state); |
bbb1e524 | 2336 | return ret; |
bbb1e524 RC |
2337 | } |
2338 | EXPORT_SYMBOL(drm_atomic_helper_set_config); | |
2339 | ||
2340 | /* just used from fb-helper and atomic-helper: */ | |
2341 | int __drm_atomic_helper_set_config(struct drm_mode_set *set, | |
2342 | struct drm_atomic_state *state) | |
2343 | { | |
2344 | struct drm_crtc_state *crtc_state; | |
2345 | struct drm_plane_state *primary_state; | |
2346 | struct drm_crtc *crtc = set->crtc; | |
83926117 | 2347 | int hdisplay, vdisplay; |
bbb1e524 RC |
2348 | int ret; |
2349 | ||
2350 | crtc_state = drm_atomic_get_crtc_state(state, crtc); | |
2351 | if (IS_ERR(crtc_state)) | |
2352 | return PTR_ERR(crtc_state); | |
2353 | ||
2354 | primary_state = drm_atomic_get_plane_state(state, crtc->primary); | |
2355 | if (IS_ERR(primary_state)) | |
2356 | return PTR_ERR(primary_state); | |
e5b5341c | 2357 | |
042652ed DV |
2358 | if (!set->mode) { |
2359 | WARN_ON(set->fb); | |
2360 | WARN_ON(set->num_connectors); | |
2361 | ||
819364da DS |
2362 | ret = drm_atomic_set_mode_for_crtc(crtc_state, NULL); |
2363 | if (ret != 0) | |
bbb1e524 | 2364 | return ret; |
819364da | 2365 | |
eab3bbef | 2366 | crtc_state->active = false; |
e5b5341c | 2367 | |
07cc0ef6 | 2368 | ret = drm_atomic_set_crtc_for_plane(primary_state, NULL); |
e5b5341c | 2369 | if (ret != 0) |
bbb1e524 | 2370 | return ret; |
e5b5341c RC |
2371 | |
2372 | drm_atomic_set_fb_for_plane(primary_state, NULL); | |
2373 | ||
042652ed DV |
2374 | goto commit; |
2375 | } | |
2376 | ||
2377 | WARN_ON(!set->fb); | |
2378 | WARN_ON(!set->num_connectors); | |
2379 | ||
819364da DS |
2380 | ret = drm_atomic_set_mode_for_crtc(crtc_state, set->mode); |
2381 | if (ret != 0) | |
bbb1e524 | 2382 | return ret; |
819364da | 2383 | |
eab3bbef | 2384 | crtc_state->active = true; |
042652ed | 2385 | |
07cc0ef6 | 2386 | ret = drm_atomic_set_crtc_for_plane(primary_state, crtc); |
042652ed | 2387 | if (ret != 0) |
bbb1e524 RC |
2388 | return ret; |
2389 | ||
196cd5d3 | 2390 | drm_mode_get_hv_timing(set->mode, &hdisplay, &vdisplay); |
83926117 | 2391 | |
321ebf04 | 2392 | drm_atomic_set_fb_for_plane(primary_state, set->fb); |
042652ed DV |
2393 | primary_state->crtc_x = 0; |
2394 | primary_state->crtc_y = 0; | |
83926117 | 2395 | primary_state->crtc_w = hdisplay; |
02e6f379 | 2396 | primary_state->crtc_h = vdisplay; |
042652ed DV |
2397 | primary_state->src_x = set->x << 16; |
2398 | primary_state->src_y = set->y << 16; | |
bd2ef25d | 2399 | if (drm_rotation_90_or_270(primary_state->rotation)) { |
83926117 | 2400 | primary_state->src_w = vdisplay << 16; |
02e6f379 | 2401 | primary_state->src_h = hdisplay << 16; |
41121248 | 2402 | } else { |
83926117 | 2403 | primary_state->src_w = hdisplay << 16; |
02e6f379 | 2404 | primary_state->src_h = vdisplay << 16; |
41121248 | 2405 | } |
042652ed DV |
2406 | |
2407 | commit: | |
2408 | ret = update_output_state(state, set); | |
2409 | if (ret) | |
bbb1e524 | 2410 | return ret; |
042652ed | 2411 | |
042652ed | 2412 | return 0; |
042652ed | 2413 | } |
042652ed | 2414 | |
14942760 TR |
2415 | /** |
2416 | * drm_atomic_helper_disable_all - disable all currently active outputs | |
2417 | * @dev: DRM device | |
2418 | * @ctx: lock acquisition context | |
2419 | * | |
2420 | * Loops through all connectors, finding those that aren't turned off and then | |
2421 | * turns them off by setting their DPMS mode to OFF and deactivating the CRTC | |
2422 | * that they are connected to. | |
2423 | * | |
2424 | * This is used for example in suspend/resume to disable all currently active | |
18dddadc DV |
2425 | * functions when suspending. If you just want to shut down everything at e.g. |
2426 | * driver unload, look at drm_atomic_helper_shutdown(). | |
14942760 TR |
2427 | * |
2428 | * Note that if callers haven't already acquired all modeset locks this might | |
2429 | * return -EDEADLK, which must be handled by calling drm_modeset_backoff(). | |
2430 | * | |
2431 | * Returns: | |
2432 | * 0 on success or a negative error code on failure. | |
2433 | * | |
2434 | * See also: | |
18dddadc DV |
2435 | * drm_atomic_helper_suspend(), drm_atomic_helper_resume() and |
2436 | * drm_atomic_helper_shutdown(). | |
14942760 TR |
2437 | */ |
2438 | int drm_atomic_helper_disable_all(struct drm_device *dev, | |
2439 | struct drm_modeset_acquire_ctx *ctx) | |
2440 | { | |
2441 | struct drm_atomic_state *state; | |
9b2104f4 | 2442 | struct drm_connector_state *conn_state; |
14942760 | 2443 | struct drm_connector *conn; |
9b2104f4 ML |
2444 | struct drm_plane_state *plane_state; |
2445 | struct drm_plane *plane; | |
2446 | struct drm_crtc_state *crtc_state; | |
2447 | struct drm_crtc *crtc; | |
2448 | int ret, i; | |
14942760 TR |
2449 | |
2450 | state = drm_atomic_state_alloc(dev); | |
2451 | if (!state) | |
2452 | return -ENOMEM; | |
2453 | ||
2454 | state->acquire_ctx = ctx; | |
2455 | ||
9b2104f4 | 2456 | drm_for_each_crtc(crtc, dev) { |
14942760 TR |
2457 | crtc_state = drm_atomic_get_crtc_state(state, crtc); |
2458 | if (IS_ERR(crtc_state)) { | |
9b2104f4 | 2459 | ret = PTR_ERR(crtc_state); |
14942760 TR |
2460 | goto free; |
2461 | } | |
2462 | ||
2463 | crtc_state->active = false; | |
9b2104f4 ML |
2464 | |
2465 | ret = drm_atomic_set_mode_prop_for_crtc(crtc_state, NULL); | |
2466 | if (ret < 0) | |
2467 | goto free; | |
2468 | ||
2469 | ret = drm_atomic_add_affected_planes(state, crtc); | |
2470 | if (ret < 0) | |
2471 | goto free; | |
2472 | ||
2473 | ret = drm_atomic_add_affected_connectors(state, crtc); | |
2474 | if (ret < 0) | |
2475 | goto free; | |
2476 | } | |
2477 | ||
2478 | for_each_connector_in_state(state, conn, conn_state, i) { | |
2479 | ret = drm_atomic_set_crtc_for_connector(conn_state, NULL); | |
2480 | if (ret < 0) | |
2481 | goto free; | |
2482 | } | |
2483 | ||
2484 | for_each_plane_in_state(state, plane, plane_state, i) { | |
2485 | ret = drm_atomic_set_crtc_for_plane(plane_state, NULL); | |
2486 | if (ret < 0) | |
2487 | goto free; | |
2488 | ||
2489 | drm_atomic_set_fb_for_plane(plane_state, NULL); | |
14942760 TR |
2490 | } |
2491 | ||
9b2104f4 | 2492 | ret = drm_atomic_commit(state); |
14942760 | 2493 | free: |
0853695c | 2494 | drm_atomic_state_put(state); |
9b2104f4 | 2495 | return ret; |
14942760 | 2496 | } |
9b2104f4 | 2497 | |
14942760 TR |
2498 | EXPORT_SYMBOL(drm_atomic_helper_disable_all); |
2499 | ||
18dddadc DV |
2500 | /** |
2501 | * drm_atomic_helper_shutdown - shutdown all CRTC | |
2502 | * @dev: DRM device | |
2503 | * | |
2504 | * This shuts down all CRTC, which is useful for driver unloading. Shutdown on | |
2505 | * suspend should instead be handled with drm_atomic_helper_suspend(), since | |
2506 | * that also takes a snapshot of the modeset state to be restored on resume. | |
2507 | * | |
2508 | * This is just a convenience wrapper around drm_atomic_helper_disable_all(), | |
2509 | * and it is the atomic version of drm_crtc_force_disable_all(). | |
2510 | */ | |
2511 | void drm_atomic_helper_shutdown(struct drm_device *dev) | |
2512 | { | |
2513 | struct drm_modeset_acquire_ctx ctx; | |
2514 | int ret; | |
2515 | ||
2516 | drm_modeset_acquire_init(&ctx, 0); | |
2517 | while (1) { | |
2518 | ret = drm_modeset_lock_all_ctx(dev, &ctx); | |
2519 | if (!ret) | |
2520 | ret = drm_atomic_helper_disable_all(dev, &ctx); | |
2521 | ||
2522 | if (ret != -EDEADLK) | |
2523 | break; | |
2524 | ||
2525 | drm_modeset_backoff(&ctx); | |
2526 | } | |
2527 | ||
2528 | if (ret) | |
2529 | DRM_ERROR("Disabling all crtc's during unload failed with %i\n", ret); | |
2530 | ||
2531 | drm_modeset_drop_locks(&ctx); | |
2532 | drm_modeset_acquire_fini(&ctx); | |
2533 | } | |
2534 | EXPORT_SYMBOL(drm_atomic_helper_shutdown); | |
2535 | ||
14942760 TR |
2536 | /** |
2537 | * drm_atomic_helper_suspend - subsystem-level suspend helper | |
2538 | * @dev: DRM device | |
2539 | * | |
2540 | * Duplicates the current atomic state, disables all active outputs and then | |
2541 | * returns a pointer to the original atomic state to the caller. Drivers can | |
2542 | * pass this pointer to the drm_atomic_helper_resume() helper upon resume to | |
2543 | * restore the output configuration that was active at the time the system | |
2544 | * entered suspend. | |
2545 | * | |
2546 | * Note that it is potentially unsafe to use this. The atomic state object | |
2547 | * returned by this function is assumed to be persistent. Drivers must ensure | |
2548 | * that this holds true. Before calling this function, drivers must make sure | |
2549 | * to suspend fbdev emulation so that nothing can be using the device. | |
2550 | * | |
2551 | * Returns: | |
2552 | * A pointer to a copy of the state before suspend on success or an ERR_PTR()- | |
2553 | * encoded error code on failure. Drivers should store the returned atomic | |
2554 | * state object and pass it to the drm_atomic_helper_resume() helper upon | |
2555 | * resume. | |
2556 | * | |
2557 | * See also: | |
2558 | * drm_atomic_helper_duplicate_state(), drm_atomic_helper_disable_all(), | |
581e49fe | 2559 | * drm_atomic_helper_resume(), drm_atomic_helper_commit_duplicated_state() |
14942760 TR |
2560 | */ |
2561 | struct drm_atomic_state *drm_atomic_helper_suspend(struct drm_device *dev) | |
2562 | { | |
2563 | struct drm_modeset_acquire_ctx ctx; | |
2564 | struct drm_atomic_state *state; | |
2565 | int err; | |
2566 | ||
2567 | drm_modeset_acquire_init(&ctx, 0); | |
2568 | ||
2569 | retry: | |
2570 | err = drm_modeset_lock_all_ctx(dev, &ctx); | |
2571 | if (err < 0) { | |
2572 | state = ERR_PTR(err); | |
2573 | goto unlock; | |
2574 | } | |
2575 | ||
2576 | state = drm_atomic_helper_duplicate_state(dev, &ctx); | |
2577 | if (IS_ERR(state)) | |
2578 | goto unlock; | |
2579 | ||
2580 | err = drm_atomic_helper_disable_all(dev, &ctx); | |
2581 | if (err < 0) { | |
0853695c | 2582 | drm_atomic_state_put(state); |
14942760 TR |
2583 | state = ERR_PTR(err); |
2584 | goto unlock; | |
2585 | } | |
2586 | ||
2587 | unlock: | |
2588 | if (PTR_ERR(state) == -EDEADLK) { | |
2589 | drm_modeset_backoff(&ctx); | |
2590 | goto retry; | |
2591 | } | |
2592 | ||
2593 | drm_modeset_drop_locks(&ctx); | |
2594 | drm_modeset_acquire_fini(&ctx); | |
2595 | return state; | |
2596 | } | |
2597 | EXPORT_SYMBOL(drm_atomic_helper_suspend); | |
2598 | ||
581e49fe ML |
2599 | /** |
2600 | * drm_atomic_helper_commit_duplicated_state - commit duplicated state | |
2601 | * @state: duplicated atomic state to commit | |
2602 | * @ctx: pointer to acquire_ctx to use for commit. | |
2603 | * | |
2604 | * The state returned by drm_atomic_helper_duplicate_state() and | |
2605 | * drm_atomic_helper_suspend() is partially invalid, and needs to | |
2606 | * be fixed up before commit. | |
2607 | * | |
2608 | * Returns: | |
2609 | * 0 on success or a negative error code on failure. | |
2610 | * | |
2611 | * See also: | |
2612 | * drm_atomic_helper_suspend() | |
2613 | */ | |
2614 | int drm_atomic_helper_commit_duplicated_state(struct drm_atomic_state *state, | |
2615 | struct drm_modeset_acquire_ctx *ctx) | |
2616 | { | |
2617 | int i; | |
2618 | struct drm_plane *plane; | |
415c3ac3 | 2619 | struct drm_plane_state *new_plane_state; |
581e49fe | 2620 | struct drm_connector *connector; |
415c3ac3 | 2621 | struct drm_connector_state *new_conn_state; |
581e49fe | 2622 | struct drm_crtc *crtc; |
415c3ac3 | 2623 | struct drm_crtc_state *new_crtc_state; |
581e49fe ML |
2624 | |
2625 | state->acquire_ctx = ctx; | |
2626 | ||
415c3ac3 | 2627 | for_each_new_plane_in_state(state, plane, new_plane_state, i) |
581e49fe ML |
2628 | state->planes[i].old_state = plane->state; |
2629 | ||
415c3ac3 | 2630 | for_each_new_crtc_in_state(state, crtc, new_crtc_state, i) |
581e49fe ML |
2631 | state->crtcs[i].old_state = crtc->state; |
2632 | ||
415c3ac3 | 2633 | for_each_new_connector_in_state(state, connector, new_conn_state, i) |
581e49fe ML |
2634 | state->connectors[i].old_state = connector->state; |
2635 | ||
2636 | return drm_atomic_commit(state); | |
2637 | } | |
2638 | EXPORT_SYMBOL(drm_atomic_helper_commit_duplicated_state); | |
2639 | ||
14942760 TR |
2640 | /** |
2641 | * drm_atomic_helper_resume - subsystem-level resume helper | |
2642 | * @dev: DRM device | |
2643 | * @state: atomic state to resume to | |
2644 | * | |
2645 | * Calls drm_mode_config_reset() to synchronize hardware and software states, | |
2646 | * grabs all modeset locks and commits the atomic state object. This can be | |
2647 | * used in conjunction with the drm_atomic_helper_suspend() helper to | |
2648 | * implement suspend/resume for drivers that support atomic mode-setting. | |
2649 | * | |
2650 | * Returns: | |
2651 | * 0 on success or a negative error code on failure. | |
2652 | * | |
2653 | * See also: | |
2654 | * drm_atomic_helper_suspend() | |
2655 | */ | |
2656 | int drm_atomic_helper_resume(struct drm_device *dev, | |
2657 | struct drm_atomic_state *state) | |
2658 | { | |
a5b8444e | 2659 | struct drm_modeset_acquire_ctx ctx; |
14942760 TR |
2660 | int err; |
2661 | ||
2662 | drm_mode_config_reset(dev); | |
581e49fe | 2663 | |
a5b8444e DV |
2664 | drm_modeset_acquire_init(&ctx, 0); |
2665 | while (1) { | |
2666 | err = drm_atomic_helper_commit_duplicated_state(state, &ctx); | |
2667 | if (err != -EDEADLK) | |
2668 | break; | |
2669 | ||
2670 | drm_modeset_backoff(&ctx); | |
2671 | } | |
2672 | ||
2673 | drm_modeset_drop_locks(&ctx); | |
2674 | drm_modeset_acquire_fini(&ctx); | |
14942760 TR |
2675 | |
2676 | return err; | |
2677 | } | |
2678 | EXPORT_SYMBOL(drm_atomic_helper_resume); | |
2679 | ||
042652ed | 2680 | /** |
7f50002f | 2681 | * drm_atomic_helper_crtc_set_property - helper for crtc properties |
042652ed DV |
2682 | * @crtc: DRM crtc |
2683 | * @property: DRM property | |
2684 | * @val: value of property | |
2685 | * | |
7f50002f LP |
2686 | * Provides a default crtc set_property handler using the atomic driver |
2687 | * interface. | |
042652ed DV |
2688 | * |
2689 | * RETURNS: | |
2690 | * Zero on success, error code on failure | |
2691 | */ | |
2692 | int | |
2693 | drm_atomic_helper_crtc_set_property(struct drm_crtc *crtc, | |
2694 | struct drm_property *property, | |
2695 | uint64_t val) | |
2696 | { | |
2697 | struct drm_atomic_state *state; | |
2698 | struct drm_crtc_state *crtc_state; | |
2699 | int ret = 0; | |
2700 | ||
2701 | state = drm_atomic_state_alloc(crtc->dev); | |
2702 | if (!state) | |
2703 | return -ENOMEM; | |
2704 | ||
2705 | /* ->set_property is always called with all locks held. */ | |
2706 | state->acquire_ctx = crtc->dev->mode_config.acquire_ctx; | |
2707 | retry: | |
2708 | crtc_state = drm_atomic_get_crtc_state(state, crtc); | |
2709 | if (IS_ERR(crtc_state)) { | |
2710 | ret = PTR_ERR(crtc_state); | |
2711 | goto fail; | |
2712 | } | |
2713 | ||
40ecc694 RC |
2714 | ret = drm_atomic_crtc_set_property(crtc, crtc_state, |
2715 | property, val); | |
042652ed DV |
2716 | if (ret) |
2717 | goto fail; | |
2718 | ||
2719 | ret = drm_atomic_commit(state); | |
042652ed DV |
2720 | fail: |
2721 | if (ret == -EDEADLK) | |
2722 | goto backoff; | |
2723 | ||
0853695c | 2724 | drm_atomic_state_put(state); |
042652ed | 2725 | return ret; |
0853695c | 2726 | |
042652ed | 2727 | backoff: |
042652ed | 2728 | drm_atomic_state_clear(state); |
6f75cea6 | 2729 | drm_atomic_legacy_backoff(state); |
042652ed DV |
2730 | |
2731 | goto retry; | |
2732 | } | |
2733 | EXPORT_SYMBOL(drm_atomic_helper_crtc_set_property); | |
2734 | ||
2735 | /** | |
7f50002f | 2736 | * drm_atomic_helper_plane_set_property - helper for plane properties |
042652ed DV |
2737 | * @plane: DRM plane |
2738 | * @property: DRM property | |
2739 | * @val: value of property | |
2740 | * | |
7f50002f LP |
2741 | * Provides a default plane set_property handler using the atomic driver |
2742 | * interface. | |
042652ed DV |
2743 | * |
2744 | * RETURNS: | |
2745 | * Zero on success, error code on failure | |
2746 | */ | |
2747 | int | |
2748 | drm_atomic_helper_plane_set_property(struct drm_plane *plane, | |
2749 | struct drm_property *property, | |
2750 | uint64_t val) | |
2751 | { | |
2752 | struct drm_atomic_state *state; | |
2753 | struct drm_plane_state *plane_state; | |
2754 | int ret = 0; | |
2755 | ||
2756 | state = drm_atomic_state_alloc(plane->dev); | |
2757 | if (!state) | |
2758 | return -ENOMEM; | |
2759 | ||
2760 | /* ->set_property is always called with all locks held. */ | |
2761 | state->acquire_ctx = plane->dev->mode_config.acquire_ctx; | |
2762 | retry: | |
2763 | plane_state = drm_atomic_get_plane_state(state, plane); | |
2764 | if (IS_ERR(plane_state)) { | |
2765 | ret = PTR_ERR(plane_state); | |
2766 | goto fail; | |
2767 | } | |
2768 | ||
40ecc694 RC |
2769 | ret = drm_atomic_plane_set_property(plane, plane_state, |
2770 | property, val); | |
042652ed DV |
2771 | if (ret) |
2772 | goto fail; | |
2773 | ||
2774 | ret = drm_atomic_commit(state); | |
042652ed DV |
2775 | fail: |
2776 | if (ret == -EDEADLK) | |
2777 | goto backoff; | |
2778 | ||
0853695c | 2779 | drm_atomic_state_put(state); |
042652ed | 2780 | return ret; |
0853695c | 2781 | |
042652ed | 2782 | backoff: |
042652ed | 2783 | drm_atomic_state_clear(state); |
6f75cea6 | 2784 | drm_atomic_legacy_backoff(state); |
042652ed DV |
2785 | |
2786 | goto retry; | |
2787 | } | |
2788 | EXPORT_SYMBOL(drm_atomic_helper_plane_set_property); | |
2789 | ||
2790 | /** | |
7f50002f | 2791 | * drm_atomic_helper_connector_set_property - helper for connector properties |
042652ed DV |
2792 | * @connector: DRM connector |
2793 | * @property: DRM property | |
2794 | * @val: value of property | |
2795 | * | |
7f50002f LP |
2796 | * Provides a default connector set_property handler using the atomic driver |
2797 | * interface. | |
042652ed DV |
2798 | * |
2799 | * RETURNS: | |
2800 | * Zero on success, error code on failure | |
2801 | */ | |
2802 | int | |
2803 | drm_atomic_helper_connector_set_property(struct drm_connector *connector, | |
2804 | struct drm_property *property, | |
2805 | uint64_t val) | |
2806 | { | |
2807 | struct drm_atomic_state *state; | |
2808 | struct drm_connector_state *connector_state; | |
2809 | int ret = 0; | |
2810 | ||
2811 | state = drm_atomic_state_alloc(connector->dev); | |
2812 | if (!state) | |
2813 | return -ENOMEM; | |
2814 | ||
2815 | /* ->set_property is always called with all locks held. */ | |
2816 | state->acquire_ctx = connector->dev->mode_config.acquire_ctx; | |
2817 | retry: | |
2818 | connector_state = drm_atomic_get_connector_state(state, connector); | |
2819 | if (IS_ERR(connector_state)) { | |
2820 | ret = PTR_ERR(connector_state); | |
2821 | goto fail; | |
2822 | } | |
2823 | ||
40ecc694 RC |
2824 | ret = drm_atomic_connector_set_property(connector, connector_state, |
2825 | property, val); | |
042652ed DV |
2826 | if (ret) |
2827 | goto fail; | |
2828 | ||
2829 | ret = drm_atomic_commit(state); | |
042652ed DV |
2830 | fail: |
2831 | if (ret == -EDEADLK) | |
2832 | goto backoff; | |
2833 | ||
0853695c | 2834 | drm_atomic_state_put(state); |
042652ed | 2835 | return ret; |
0853695c | 2836 | |
042652ed | 2837 | backoff: |
042652ed | 2838 | drm_atomic_state_clear(state); |
6f75cea6 | 2839 | drm_atomic_legacy_backoff(state); |
042652ed DV |
2840 | |
2841 | goto retry; | |
2842 | } | |
2843 | EXPORT_SYMBOL(drm_atomic_helper_connector_set_property); | |
8bc0f312 | 2844 | |
f869a6ec AG |
2845 | static int page_flip_common( |
2846 | struct drm_atomic_state *state, | |
2847 | struct drm_crtc *crtc, | |
2848 | struct drm_framebuffer *fb, | |
6cbe5c46 AG |
2849 | struct drm_pending_vblank_event *event, |
2850 | uint32_t flags) | |
f869a6ec AG |
2851 | { |
2852 | struct drm_plane *plane = crtc->primary; | |
2853 | struct drm_plane_state *plane_state; | |
2854 | struct drm_crtc_state *crtc_state; | |
2855 | int ret = 0; | |
2856 | ||
2857 | crtc_state = drm_atomic_get_crtc_state(state, crtc); | |
2858 | if (IS_ERR(crtc_state)) | |
2859 | return PTR_ERR(crtc_state); | |
2860 | ||
2861 | crtc_state->event = event; | |
6cbe5c46 | 2862 | crtc_state->pageflip_flags = flags; |
f869a6ec AG |
2863 | |
2864 | plane_state = drm_atomic_get_plane_state(state, plane); | |
2865 | if (IS_ERR(plane_state)) | |
2866 | return PTR_ERR(plane_state); | |
2867 | ||
f869a6ec AG |
2868 | ret = drm_atomic_set_crtc_for_plane(plane_state, crtc); |
2869 | if (ret != 0) | |
2870 | return ret; | |
2871 | drm_atomic_set_fb_for_plane(plane_state, fb); | |
2872 | ||
2873 | /* Make sure we don't accidentally do a full modeset. */ | |
2874 | state->allow_modeset = false; | |
2875 | if (!crtc_state->active) { | |
6ac7c548 RK |
2876 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] disabled, rejecting legacy flip\n", |
2877 | crtc->base.id, crtc->name); | |
f869a6ec AG |
2878 | return -EINVAL; |
2879 | } | |
2880 | ||
2881 | return ret; | |
2882 | } | |
2883 | ||
8bc0f312 DV |
2884 | /** |
2885 | * drm_atomic_helper_page_flip - execute a legacy page flip | |
2886 | * @crtc: DRM crtc | |
2887 | * @fb: DRM framebuffer | |
2888 | * @event: optional DRM event to signal upon completion | |
2889 | * @flags: flip flags for non-vblank sync'ed updates | |
41292b1f | 2890 | * @ctx: lock acquisition context |
8bc0f312 | 2891 | * |
f869a6ec AG |
2892 | * Provides a default &drm_crtc_funcs.page_flip implementation |
2893 | * using the atomic driver interface. | |
8bc0f312 | 2894 | * |
8bc0f312 DV |
2895 | * Returns: |
2896 | * Returns 0 on success, negative errno numbers on failure. | |
f869a6ec AG |
2897 | * |
2898 | * See also: | |
2899 | * drm_atomic_helper_page_flip_target() | |
8bc0f312 DV |
2900 | */ |
2901 | int drm_atomic_helper_page_flip(struct drm_crtc *crtc, | |
2902 | struct drm_framebuffer *fb, | |
2903 | struct drm_pending_vblank_event *event, | |
41292b1f DV |
2904 | uint32_t flags, |
2905 | struct drm_modeset_acquire_ctx *ctx) | |
8bc0f312 DV |
2906 | { |
2907 | struct drm_plane *plane = crtc->primary; | |
2908 | struct drm_atomic_state *state; | |
8bc0f312 DV |
2909 | int ret = 0; |
2910 | ||
8bc0f312 DV |
2911 | state = drm_atomic_state_alloc(plane->dev); |
2912 | if (!state) | |
2913 | return -ENOMEM; | |
2914 | ||
043e7fb6 | 2915 | state->acquire_ctx = ctx; |
f869a6ec | 2916 | |
6cbe5c46 | 2917 | ret = page_flip_common(state, crtc, fb, event, flags); |
f869a6ec | 2918 | if (ret != 0) |
8bc0f312 | 2919 | goto fail; |
8bc0f312 | 2920 | |
f869a6ec | 2921 | ret = drm_atomic_nonblocking_commit(state); |
f869a6ec | 2922 | fail: |
f869a6ec AG |
2923 | drm_atomic_state_put(state); |
2924 | return ret; | |
f869a6ec AG |
2925 | } |
2926 | EXPORT_SYMBOL(drm_atomic_helper_page_flip); | |
2927 | ||
2928 | /** | |
2929 | * drm_atomic_helper_page_flip_target - do page flip on target vblank period. | |
2930 | * @crtc: DRM crtc | |
2931 | * @fb: DRM framebuffer | |
2932 | * @event: optional DRM event to signal upon completion | |
2933 | * @flags: flip flags for non-vblank sync'ed updates | |
2934 | * @target: specifying the target vblank period when the flip to take effect | |
41292b1f | 2935 | * @ctx: lock acquisition context |
f869a6ec AG |
2936 | * |
2937 | * Provides a default &drm_crtc_funcs.page_flip_target implementation. | |
2938 | * Similar to drm_atomic_helper_page_flip() with extra parameter to specify | |
2939 | * target vblank period to flip. | |
2940 | * | |
2941 | * Returns: | |
2942 | * Returns 0 on success, negative errno numbers on failure. | |
2943 | */ | |
2944 | int drm_atomic_helper_page_flip_target( | |
2945 | struct drm_crtc *crtc, | |
2946 | struct drm_framebuffer *fb, | |
2947 | struct drm_pending_vblank_event *event, | |
2948 | uint32_t flags, | |
41292b1f DV |
2949 | uint32_t target, |
2950 | struct drm_modeset_acquire_ctx *ctx) | |
f869a6ec AG |
2951 | { |
2952 | struct drm_plane *plane = crtc->primary; | |
2953 | struct drm_atomic_state *state; | |
2954 | struct drm_crtc_state *crtc_state; | |
2955 | int ret = 0; | |
2956 | ||
f869a6ec AG |
2957 | state = drm_atomic_state_alloc(plane->dev); |
2958 | if (!state) | |
2959 | return -ENOMEM; | |
2960 | ||
043e7fb6 | 2961 | state->acquire_ctx = ctx; |
f869a6ec | 2962 | |
6cbe5c46 | 2963 | ret = page_flip_common(state, crtc, fb, event, flags); |
8bc0f312 DV |
2964 | if (ret != 0) |
2965 | goto fail; | |
8bc0f312 | 2966 | |
b4d93679 | 2967 | crtc_state = drm_atomic_get_new_crtc_state(state, crtc); |
f869a6ec | 2968 | if (WARN_ON(!crtc_state)) { |
4cba6850 DV |
2969 | ret = -EINVAL; |
2970 | goto fail; | |
2971 | } | |
f869a6ec | 2972 | crtc_state->target_vblank = target; |
4cba6850 | 2973 | |
b837ba0a | 2974 | ret = drm_atomic_nonblocking_commit(state); |
8bc0f312 | 2975 | fail: |
0853695c | 2976 | drm_atomic_state_put(state); |
8bc0f312 | 2977 | return ret; |
8bc0f312 | 2978 | } |
f869a6ec | 2979 | EXPORT_SYMBOL(drm_atomic_helper_page_flip_target); |
d461701c | 2980 | |
b486e0e6 DV |
2981 | /** |
2982 | * drm_atomic_helper_connector_dpms() - connector dpms helper implementation | |
2983 | * @connector: affected connector | |
2984 | * @mode: DPMS mode | |
2985 | * | |
2986 | * This is the main helper function provided by the atomic helper framework for | |
2987 | * implementing the legacy DPMS connector interface. It computes the new desired | |
6806cdf9 DV |
2988 | * &drm_crtc_state.active state for the corresponding CRTC (if the connector is |
2989 | * enabled) and updates it. | |
9a69a9ac ML |
2990 | * |
2991 | * Returns: | |
2992 | * Returns 0 on success, negative errno numbers on failure. | |
b486e0e6 | 2993 | */ |
9a69a9ac ML |
2994 | int drm_atomic_helper_connector_dpms(struct drm_connector *connector, |
2995 | int mode) | |
b486e0e6 DV |
2996 | { |
2997 | struct drm_mode_config *config = &connector->dev->mode_config; | |
2998 | struct drm_atomic_state *state; | |
2999 | struct drm_crtc_state *crtc_state; | |
3000 | struct drm_crtc *crtc; | |
3001 | struct drm_connector *tmp_connector; | |
c36a3254 | 3002 | struct drm_connector_list_iter conn_iter; |
b486e0e6 DV |
3003 | int ret; |
3004 | bool active = false; | |
9a69a9ac | 3005 | int old_mode = connector->dpms; |
b486e0e6 DV |
3006 | |
3007 | if (mode != DRM_MODE_DPMS_ON) | |
3008 | mode = DRM_MODE_DPMS_OFF; | |
3009 | ||
3010 | connector->dpms = mode; | |
3011 | crtc = connector->state->crtc; | |
3012 | ||
3013 | if (!crtc) | |
9a69a9ac | 3014 | return 0; |
b486e0e6 | 3015 | |
b486e0e6 DV |
3016 | state = drm_atomic_state_alloc(connector->dev); |
3017 | if (!state) | |
9a69a9ac | 3018 | return -ENOMEM; |
b486e0e6 | 3019 | |
b260ac3e | 3020 | state->acquire_ctx = crtc->dev->mode_config.acquire_ctx; |
b486e0e6 DV |
3021 | retry: |
3022 | crtc_state = drm_atomic_get_crtc_state(state, crtc); | |
9a69a9ac ML |
3023 | if (IS_ERR(crtc_state)) { |
3024 | ret = PTR_ERR(crtc_state); | |
3025 | goto fail; | |
3026 | } | |
b486e0e6 DV |
3027 | |
3028 | WARN_ON(!drm_modeset_is_locked(&config->connection_mutex)); | |
3029 | ||
b982dab1 | 3030 | drm_connector_list_iter_begin(connector->dev, &conn_iter); |
c36a3254 | 3031 | drm_for_each_connector_iter(tmp_connector, &conn_iter) { |
0388df05 | 3032 | if (tmp_connector->state->crtc != crtc) |
b486e0e6 DV |
3033 | continue; |
3034 | ||
0388df05 | 3035 | if (tmp_connector->dpms == DRM_MODE_DPMS_ON) { |
b486e0e6 DV |
3036 | active = true; |
3037 | break; | |
3038 | } | |
3039 | } | |
b982dab1 | 3040 | drm_connector_list_iter_end(&conn_iter); |
b486e0e6 DV |
3041 | crtc_state->active = active; |
3042 | ||
3043 | ret = drm_atomic_commit(state); | |
b486e0e6 DV |
3044 | fail: |
3045 | if (ret == -EDEADLK) | |
3046 | goto backoff; | |
8f5040e4 ML |
3047 | if (ret != 0) |
3048 | connector->dpms = old_mode; | |
0853695c | 3049 | drm_atomic_state_put(state); |
9a69a9ac | 3050 | return ret; |
0853695c | 3051 | |
b486e0e6 DV |
3052 | backoff: |
3053 | drm_atomic_state_clear(state); | |
3054 | drm_atomic_legacy_backoff(state); | |
3055 | ||
3056 | goto retry; | |
3057 | } | |
3058 | EXPORT_SYMBOL(drm_atomic_helper_connector_dpms); | |
3059 | ||
9ecb5498 | 3060 | /** |
6806cdf9 DV |
3061 | * drm_atomic_helper_best_encoder - Helper for |
3062 | * &drm_connector_helper_funcs.best_encoder callback | |
9ecb5498 NT |
3063 | * @connector: Connector control structure |
3064 | * | |
6806cdf9 | 3065 | * This is a &drm_connector_helper_funcs.best_encoder callback helper for |
9ecb5498 NT |
3066 | * connectors that support exactly 1 encoder, statically determined at driver |
3067 | * init time. | |
3068 | */ | |
3069 | struct drm_encoder * | |
3070 | drm_atomic_helper_best_encoder(struct drm_connector *connector) | |
3071 | { | |
3072 | WARN_ON(connector->encoder_ids[1]); | |
3073 | return drm_encoder_find(connector->dev, connector->encoder_ids[0]); | |
3074 | } | |
3075 | EXPORT_SYMBOL(drm_atomic_helper_best_encoder); | |
3076 | ||
3150c7d0 DV |
3077 | /** |
3078 | * DOC: atomic state reset and initialization | |
3079 | * | |
3080 | * Both the drm core and the atomic helpers assume that there is always the full | |
3081 | * and correct atomic software state for all connectors, CRTCs and planes | |
3082 | * available. Which is a bit a problem on driver load and also after system | |
3083 | * suspend. One way to solve this is to have a hardware state read-out | |
3084 | * infrastructure which reconstructs the full software state (e.g. the i915 | |
3085 | * driver). | |
3086 | * | |
3087 | * The simpler solution is to just reset the software state to everything off, | |
3088 | * which is easiest to do by calling drm_mode_config_reset(). To facilitate this | |
3089 | * the atomic helpers provide default reset implementations for all hooks. | |
7f8ee3e5 DV |
3090 | * |
3091 | * On the upside the precise state tracking of atomic simplifies system suspend | |
3092 | * and resume a lot. For drivers using drm_mode_config_reset() a complete recipe | |
3093 | * is implemented in drm_atomic_helper_suspend() and drm_atomic_helper_resume(). | |
3094 | * For other drivers the building blocks are split out, see the documentation | |
3095 | * for these functions. | |
3150c7d0 DV |
3096 | */ |
3097 | ||
d461701c | 3098 | /** |
6806cdf9 | 3099 | * drm_atomic_helper_crtc_reset - default &drm_crtc_funcs.reset hook for CRTCs |
d461701c DV |
3100 | * @crtc: drm CRTC |
3101 | * | |
3102 | * Resets the atomic state for @crtc by freeing the state pointer (which might | |
3103 | * be NULL, e.g. at driver load time) and allocating a new empty state object. | |
3104 | */ | |
3105 | void drm_atomic_helper_crtc_reset(struct drm_crtc *crtc) | |
3106 | { | |
b0b5511b | 3107 | if (crtc->state) |
ec2dc6a0 | 3108 | __drm_atomic_helper_crtc_destroy_state(crtc->state); |
b0b5511b | 3109 | |
d461701c DV |
3110 | kfree(crtc->state); |
3111 | crtc->state = kzalloc(sizeof(*crtc->state), GFP_KERNEL); | |
07cc0ef6 DV |
3112 | |
3113 | if (crtc->state) | |
3114 | crtc->state->crtc = crtc; | |
d461701c DV |
3115 | } |
3116 | EXPORT_SYMBOL(drm_atomic_helper_crtc_reset); | |
3117 | ||
f5e7840b TR |
3118 | /** |
3119 | * __drm_atomic_helper_crtc_duplicate_state - copy atomic CRTC state | |
3120 | * @crtc: CRTC object | |
3121 | * @state: atomic CRTC state | |
3122 | * | |
3123 | * Copies atomic state from a CRTC's current state and resets inferred values. | |
3124 | * This is useful for drivers that subclass the CRTC state. | |
3125 | */ | |
3126 | void __drm_atomic_helper_crtc_duplicate_state(struct drm_crtc *crtc, | |
3127 | struct drm_crtc_state *state) | |
3128 | { | |
3129 | memcpy(state, crtc->state, sizeof(*state)); | |
3130 | ||
99cf4a29 | 3131 | if (state->mode_blob) |
6472e509 | 3132 | drm_property_blob_get(state->mode_blob); |
5488dc16 | 3133 | if (state->degamma_lut) |
6472e509 | 3134 | drm_property_blob_get(state->degamma_lut); |
5488dc16 | 3135 | if (state->ctm) |
6472e509 | 3136 | drm_property_blob_get(state->ctm); |
5488dc16 | 3137 | if (state->gamma_lut) |
6472e509 | 3138 | drm_property_blob_get(state->gamma_lut); |
f5e7840b TR |
3139 | state->mode_changed = false; |
3140 | state->active_changed = false; | |
3141 | state->planes_changed = false; | |
fc596660 | 3142 | state->connectors_changed = false; |
5488dc16 | 3143 | state->color_mgmt_changed = false; |
44d1240d | 3144 | state->zpos_changed = false; |
f5e7840b | 3145 | state->event = NULL; |
6cbe5c46 | 3146 | state->pageflip_flags = 0; |
f5e7840b TR |
3147 | } |
3148 | EXPORT_SYMBOL(__drm_atomic_helper_crtc_duplicate_state); | |
3149 | ||
d461701c DV |
3150 | /** |
3151 | * drm_atomic_helper_crtc_duplicate_state - default state duplicate hook | |
3152 | * @crtc: drm CRTC | |
3153 | * | |
3154 | * Default CRTC state duplicate hook for drivers which don't have their own | |
3155 | * subclassed CRTC state structure. | |
3156 | */ | |
3157 | struct drm_crtc_state * | |
3158 | drm_atomic_helper_crtc_duplicate_state(struct drm_crtc *crtc) | |
3159 | { | |
3160 | struct drm_crtc_state *state; | |
3161 | ||
3162 | if (WARN_ON(!crtc->state)) | |
3163 | return NULL; | |
3164 | ||
f5e7840b TR |
3165 | state = kmalloc(sizeof(*state), GFP_KERNEL); |
3166 | if (state) | |
3167 | __drm_atomic_helper_crtc_duplicate_state(crtc, state); | |
d461701c DV |
3168 | |
3169 | return state; | |
3170 | } | |
3171 | EXPORT_SYMBOL(drm_atomic_helper_crtc_duplicate_state); | |
3172 | ||
f5e7840b TR |
3173 | /** |
3174 | * __drm_atomic_helper_crtc_destroy_state - release CRTC state | |
f5e7840b TR |
3175 | * @state: CRTC state object to release |
3176 | * | |
3177 | * Releases all resources stored in the CRTC state without actually freeing | |
3178 | * the memory of the CRTC state. This is useful for drivers that subclass the | |
3179 | * CRTC state. | |
3180 | */ | |
ec2dc6a0 | 3181 | void __drm_atomic_helper_crtc_destroy_state(struct drm_crtc_state *state) |
f5e7840b | 3182 | { |
6472e509 TR |
3183 | drm_property_blob_put(state->mode_blob); |
3184 | drm_property_blob_put(state->degamma_lut); | |
3185 | drm_property_blob_put(state->ctm); | |
3186 | drm_property_blob_put(state->gamma_lut); | |
f5e7840b TR |
3187 | } |
3188 | EXPORT_SYMBOL(__drm_atomic_helper_crtc_destroy_state); | |
3189 | ||
d461701c DV |
3190 | /** |
3191 | * drm_atomic_helper_crtc_destroy_state - default state destroy hook | |
3192 | * @crtc: drm CRTC | |
3193 | * @state: CRTC state object to release | |
3194 | * | |
3195 | * Default CRTC state destroy hook for drivers which don't have their own | |
3196 | * subclassed CRTC state structure. | |
3197 | */ | |
3198 | void drm_atomic_helper_crtc_destroy_state(struct drm_crtc *crtc, | |
3199 | struct drm_crtc_state *state) | |
3200 | { | |
ec2dc6a0 | 3201 | __drm_atomic_helper_crtc_destroy_state(state); |
d461701c DV |
3202 | kfree(state); |
3203 | } | |
3204 | EXPORT_SYMBOL(drm_atomic_helper_crtc_destroy_state); | |
3205 | ||
3206 | /** | |
6806cdf9 | 3207 | * drm_atomic_helper_plane_reset - default &drm_plane_funcs.reset hook for planes |
d461701c DV |
3208 | * @plane: drm plane |
3209 | * | |
3210 | * Resets the atomic state for @plane by freeing the state pointer (which might | |
3211 | * be NULL, e.g. at driver load time) and allocating a new empty state object. | |
3212 | */ | |
3213 | void drm_atomic_helper_plane_reset(struct drm_plane *plane) | |
3214 | { | |
b0b5511b | 3215 | if (plane->state) |
2f701695 | 3216 | __drm_atomic_helper_plane_destroy_state(plane->state); |
321ebf04 | 3217 | |
d461701c DV |
3218 | kfree(plane->state); |
3219 | plane->state = kzalloc(sizeof(*plane->state), GFP_KERNEL); | |
07cc0ef6 | 3220 | |
25aaa3a1 | 3221 | if (plane->state) { |
07cc0ef6 | 3222 | plane->state->plane = plane; |
31ad61e4 | 3223 | plane->state->rotation = DRM_ROTATE_0; |
25aaa3a1 | 3224 | } |
d461701c DV |
3225 | } |
3226 | EXPORT_SYMBOL(drm_atomic_helper_plane_reset); | |
3227 | ||
f5e7840b TR |
3228 | /** |
3229 | * __drm_atomic_helper_plane_duplicate_state - copy atomic plane state | |
3230 | * @plane: plane object | |
3231 | * @state: atomic plane state | |
3232 | * | |
3233 | * Copies atomic state from a plane's current state. This is useful for | |
3234 | * drivers that subclass the plane state. | |
3235 | */ | |
3236 | void __drm_atomic_helper_plane_duplicate_state(struct drm_plane *plane, | |
3237 | struct drm_plane_state *state) | |
3238 | { | |
3239 | memcpy(state, plane->state, sizeof(*state)); | |
3240 | ||
3241 | if (state->fb) | |
a4a69da0 | 3242 | drm_framebuffer_get(state->fb); |
96260142 GP |
3243 | |
3244 | state->fence = NULL; | |
f5e7840b TR |
3245 | } |
3246 | EXPORT_SYMBOL(__drm_atomic_helper_plane_duplicate_state); | |
3247 | ||
d461701c DV |
3248 | /** |
3249 | * drm_atomic_helper_plane_duplicate_state - default state duplicate hook | |
3250 | * @plane: drm plane | |
3251 | * | |
3252 | * Default plane state duplicate hook for drivers which don't have their own | |
3253 | * subclassed plane state structure. | |
3254 | */ | |
3255 | struct drm_plane_state * | |
3256 | drm_atomic_helper_plane_duplicate_state(struct drm_plane *plane) | |
3257 | { | |
321ebf04 DV |
3258 | struct drm_plane_state *state; |
3259 | ||
d461701c DV |
3260 | if (WARN_ON(!plane->state)) |
3261 | return NULL; | |
3262 | ||
f5e7840b TR |
3263 | state = kmalloc(sizeof(*state), GFP_KERNEL); |
3264 | if (state) | |
3265 | __drm_atomic_helper_plane_duplicate_state(plane, state); | |
321ebf04 DV |
3266 | |
3267 | return state; | |
d461701c DV |
3268 | } |
3269 | EXPORT_SYMBOL(drm_atomic_helper_plane_duplicate_state); | |
3270 | ||
f5e7840b TR |
3271 | /** |
3272 | * __drm_atomic_helper_plane_destroy_state - release plane state | |
f5e7840b TR |
3273 | * @state: plane state object to release |
3274 | * | |
3275 | * Releases all resources stored in the plane state without actually freeing | |
3276 | * the memory of the plane state. This is useful for drivers that subclass the | |
3277 | * plane state. | |
3278 | */ | |
2f701695 | 3279 | void __drm_atomic_helper_plane_destroy_state(struct drm_plane_state *state) |
f5e7840b TR |
3280 | { |
3281 | if (state->fb) | |
a4a69da0 | 3282 | drm_framebuffer_put(state->fb); |
96260142 GP |
3283 | |
3284 | if (state->fence) | |
3285 | dma_fence_put(state->fence); | |
f5e7840b TR |
3286 | } |
3287 | EXPORT_SYMBOL(__drm_atomic_helper_plane_destroy_state); | |
3288 | ||
d461701c DV |
3289 | /** |
3290 | * drm_atomic_helper_plane_destroy_state - default state destroy hook | |
3291 | * @plane: drm plane | |
3292 | * @state: plane state object to release | |
3293 | * | |
3294 | * Default plane state destroy hook for drivers which don't have their own | |
3295 | * subclassed plane state structure. | |
3296 | */ | |
3297 | void drm_atomic_helper_plane_destroy_state(struct drm_plane *plane, | |
321ebf04 | 3298 | struct drm_plane_state *state) |
d461701c | 3299 | { |
2f701695 | 3300 | __drm_atomic_helper_plane_destroy_state(state); |
d461701c DV |
3301 | kfree(state); |
3302 | } | |
3303 | EXPORT_SYMBOL(drm_atomic_helper_plane_destroy_state); | |
3304 | ||
4cd39917 ML |
3305 | /** |
3306 | * __drm_atomic_helper_connector_reset - reset state on connector | |
3307 | * @connector: drm connector | |
3308 | * @conn_state: connector state to assign | |
3309 | * | |
3310 | * Initializes the newly allocated @conn_state and assigns it to | |
6806cdf9 DV |
3311 | * the &drm_conector->state pointer of @connector, usually required when |
3312 | * initializing the drivers or when called from the &drm_connector_funcs.reset | |
3313 | * hook. | |
4cd39917 ML |
3314 | * |
3315 | * This is useful for drivers that subclass the connector state. | |
3316 | */ | |
3317 | void | |
3318 | __drm_atomic_helper_connector_reset(struct drm_connector *connector, | |
3319 | struct drm_connector_state *conn_state) | |
3320 | { | |
3321 | if (conn_state) | |
3322 | conn_state->connector = connector; | |
3323 | ||
3324 | connector->state = conn_state; | |
3325 | } | |
3326 | EXPORT_SYMBOL(__drm_atomic_helper_connector_reset); | |
3327 | ||
d461701c | 3328 | /** |
6806cdf9 | 3329 | * drm_atomic_helper_connector_reset - default &drm_connector_funcs.reset hook for connectors |
d461701c DV |
3330 | * @connector: drm connector |
3331 | * | |
3332 | * Resets the atomic state for @connector by freeing the state pointer (which | |
3333 | * might be NULL, e.g. at driver load time) and allocating a new empty state | |
3334 | * object. | |
3335 | */ | |
3336 | void drm_atomic_helper_connector_reset(struct drm_connector *connector) | |
3337 | { | |
4cd39917 ML |
3338 | struct drm_connector_state *conn_state = |
3339 | kzalloc(sizeof(*conn_state), GFP_KERNEL); | |
07cc0ef6 | 3340 | |
b0b5511b | 3341 | if (connector->state) |
fabd9106 | 3342 | __drm_atomic_helper_connector_destroy_state(connector->state); |
b0b5511b | 3343 | |
4cd39917 ML |
3344 | kfree(connector->state); |
3345 | __drm_atomic_helper_connector_reset(connector, conn_state); | |
d461701c DV |
3346 | } |
3347 | EXPORT_SYMBOL(drm_atomic_helper_connector_reset); | |
3348 | ||
f5e7840b TR |
3349 | /** |
3350 | * __drm_atomic_helper_connector_duplicate_state - copy atomic connector state | |
3351 | * @connector: connector object | |
3352 | * @state: atomic connector state | |
3353 | * | |
3354 | * Copies atomic state from a connector's current state. This is useful for | |
3355 | * drivers that subclass the connector state. | |
3356 | */ | |
3357 | void | |
3358 | __drm_atomic_helper_connector_duplicate_state(struct drm_connector *connector, | |
3359 | struct drm_connector_state *state) | |
3360 | { | |
3361 | memcpy(state, connector->state, sizeof(*state)); | |
d2307dea | 3362 | if (state->crtc) |
ad093607 | 3363 | drm_connector_get(connector); |
f5e7840b TR |
3364 | } |
3365 | EXPORT_SYMBOL(__drm_atomic_helper_connector_duplicate_state); | |
3366 | ||
d461701c DV |
3367 | /** |
3368 | * drm_atomic_helper_connector_duplicate_state - default state duplicate hook | |
3369 | * @connector: drm connector | |
3370 | * | |
3371 | * Default connector state duplicate hook for drivers which don't have their own | |
3372 | * subclassed connector state structure. | |
3373 | */ | |
3374 | struct drm_connector_state * | |
3375 | drm_atomic_helper_connector_duplicate_state(struct drm_connector *connector) | |
3376 | { | |
f5e7840b TR |
3377 | struct drm_connector_state *state; |
3378 | ||
d461701c DV |
3379 | if (WARN_ON(!connector->state)) |
3380 | return NULL; | |
3381 | ||
f5e7840b TR |
3382 | state = kmalloc(sizeof(*state), GFP_KERNEL); |
3383 | if (state) | |
3384 | __drm_atomic_helper_connector_duplicate_state(connector, state); | |
3385 | ||
3386 | return state; | |
d461701c DV |
3387 | } |
3388 | EXPORT_SYMBOL(drm_atomic_helper_connector_duplicate_state); | |
3389 | ||
397fd77c TR |
3390 | /** |
3391 | * drm_atomic_helper_duplicate_state - duplicate an atomic state object | |
3392 | * @dev: DRM device | |
3393 | * @ctx: lock acquisition context | |
3394 | * | |
3395 | * Makes a copy of the current atomic state by looping over all objects and | |
14942760 TR |
3396 | * duplicating their respective states. This is used for example by suspend/ |
3397 | * resume support code to save the state prior to suspend such that it can | |
3398 | * be restored upon resume. | |
397fd77c TR |
3399 | * |
3400 | * Note that this treats atomic state as persistent between save and restore. | |
3401 | * Drivers must make sure that this is possible and won't result in confusion | |
3402 | * or erroneous behaviour. | |
3403 | * | |
3404 | * Note that if callers haven't already acquired all modeset locks this might | |
3405 | * return -EDEADLK, which must be handled by calling drm_modeset_backoff(). | |
3406 | * | |
3407 | * Returns: | |
3408 | * A pointer to the copy of the atomic state object on success or an | |
3409 | * ERR_PTR()-encoded error code on failure. | |
14942760 TR |
3410 | * |
3411 | * See also: | |
3412 | * drm_atomic_helper_suspend(), drm_atomic_helper_resume() | |
397fd77c TR |
3413 | */ |
3414 | struct drm_atomic_state * | |
3415 | drm_atomic_helper_duplicate_state(struct drm_device *dev, | |
3416 | struct drm_modeset_acquire_ctx *ctx) | |
3417 | { | |
3418 | struct drm_atomic_state *state; | |
3419 | struct drm_connector *conn; | |
c36a3254 | 3420 | struct drm_connector_list_iter conn_iter; |
397fd77c TR |
3421 | struct drm_plane *plane; |
3422 | struct drm_crtc *crtc; | |
3423 | int err = 0; | |
3424 | ||
3425 | state = drm_atomic_state_alloc(dev); | |
3426 | if (!state) | |
3427 | return ERR_PTR(-ENOMEM); | |
3428 | ||
3429 | state->acquire_ctx = ctx; | |
3430 | ||
3431 | drm_for_each_crtc(crtc, dev) { | |
3432 | struct drm_crtc_state *crtc_state; | |
3433 | ||
3434 | crtc_state = drm_atomic_get_crtc_state(state, crtc); | |
3435 | if (IS_ERR(crtc_state)) { | |
3436 | err = PTR_ERR(crtc_state); | |
3437 | goto free; | |
3438 | } | |
3439 | } | |
3440 | ||
3441 | drm_for_each_plane(plane, dev) { | |
3442 | struct drm_plane_state *plane_state; | |
3443 | ||
3444 | plane_state = drm_atomic_get_plane_state(state, plane); | |
3445 | if (IS_ERR(plane_state)) { | |
3446 | err = PTR_ERR(plane_state); | |
3447 | goto free; | |
3448 | } | |
3449 | } | |
3450 | ||
b982dab1 | 3451 | drm_connector_list_iter_begin(dev, &conn_iter); |
c36a3254 | 3452 | drm_for_each_connector_iter(conn, &conn_iter) { |
397fd77c TR |
3453 | struct drm_connector_state *conn_state; |
3454 | ||
3455 | conn_state = drm_atomic_get_connector_state(state, conn); | |
3456 | if (IS_ERR(conn_state)) { | |
3457 | err = PTR_ERR(conn_state); | |
b982dab1 | 3458 | drm_connector_list_iter_end(&conn_iter); |
397fd77c TR |
3459 | goto free; |
3460 | } | |
3461 | } | |
b982dab1 | 3462 | drm_connector_list_iter_end(&conn_iter); |
397fd77c TR |
3463 | |
3464 | /* clear the acquire context so that it isn't accidentally reused */ | |
3465 | state->acquire_ctx = NULL; | |
3466 | ||
3467 | free: | |
3468 | if (err < 0) { | |
0853695c | 3469 | drm_atomic_state_put(state); |
397fd77c TR |
3470 | state = ERR_PTR(err); |
3471 | } | |
3472 | ||
3473 | return state; | |
3474 | } | |
3475 | EXPORT_SYMBOL(drm_atomic_helper_duplicate_state); | |
3476 | ||
f5e7840b TR |
3477 | /** |
3478 | * __drm_atomic_helper_connector_destroy_state - release connector state | |
f5e7840b TR |
3479 | * @state: connector state object to release |
3480 | * | |
3481 | * Releases all resources stored in the connector state without actually | |
3482 | * freeing the memory of the connector state. This is useful for drivers that | |
3483 | * subclass the connector state. | |
3484 | */ | |
3485 | void | |
fabd9106 | 3486 | __drm_atomic_helper_connector_destroy_state(struct drm_connector_state *state) |
f5e7840b | 3487 | { |
d2307dea | 3488 | if (state->crtc) |
ad093607 | 3489 | drm_connector_put(state->connector); |
f5e7840b TR |
3490 | } |
3491 | EXPORT_SYMBOL(__drm_atomic_helper_connector_destroy_state); | |
3492 | ||
d461701c DV |
3493 | /** |
3494 | * drm_atomic_helper_connector_destroy_state - default state destroy hook | |
3495 | * @connector: drm connector | |
3496 | * @state: connector state object to release | |
3497 | * | |
3498 | * Default connector state destroy hook for drivers which don't have their own | |
3499 | * subclassed connector state structure. | |
3500 | */ | |
3501 | void drm_atomic_helper_connector_destroy_state(struct drm_connector *connector, | |
3502 | struct drm_connector_state *state) | |
3503 | { | |
fabd9106 | 3504 | __drm_atomic_helper_connector_destroy_state(state); |
d461701c DV |
3505 | kfree(state); |
3506 | } | |
3507 | EXPORT_SYMBOL(drm_atomic_helper_connector_destroy_state); | |
5488dc16 LL |
3508 | |
3509 | /** | |
3510 | * drm_atomic_helper_legacy_gamma_set - set the legacy gamma correction table | |
3511 | * @crtc: CRTC object | |
3512 | * @red: red correction table | |
3513 | * @green: green correction table | |
3514 | * @blue: green correction table | |
5488dc16 | 3515 | * @size: size of the tables |
6d124ff8 | 3516 | * @ctx: lock acquire context |
5488dc16 LL |
3517 | * |
3518 | * Implements support for legacy gamma correction table for drivers | |
3519 | * that support color management through the DEGAMMA_LUT/GAMMA_LUT | |
3520 | * properties. | |
3521 | */ | |
7ea77283 ML |
3522 | int drm_atomic_helper_legacy_gamma_set(struct drm_crtc *crtc, |
3523 | u16 *red, u16 *green, u16 *blue, | |
6d124ff8 DV |
3524 | uint32_t size, |
3525 | struct drm_modeset_acquire_ctx *ctx) | |
5488dc16 LL |
3526 | { |
3527 | struct drm_device *dev = crtc->dev; | |
3528 | struct drm_mode_config *config = &dev->mode_config; | |
3529 | struct drm_atomic_state *state; | |
3530 | struct drm_crtc_state *crtc_state; | |
3531 | struct drm_property_blob *blob = NULL; | |
3532 | struct drm_color_lut *blob_data; | |
3533 | int i, ret = 0; | |
3534 | ||
3535 | state = drm_atomic_state_alloc(crtc->dev); | |
3536 | if (!state) | |
7ea77283 | 3537 | return -ENOMEM; |
5488dc16 LL |
3538 | |
3539 | blob = drm_property_create_blob(dev, | |
3540 | sizeof(struct drm_color_lut) * size, | |
3541 | NULL); | |
562c5b4d LL |
3542 | if (IS_ERR(blob)) { |
3543 | ret = PTR_ERR(blob); | |
c1f415c9 | 3544 | blob = NULL; |
5488dc16 LL |
3545 | goto fail; |
3546 | } | |
3547 | ||
3548 | /* Prepare GAMMA_LUT with the legacy values. */ | |
3549 | blob_data = (struct drm_color_lut *) blob->data; | |
3550 | for (i = 0; i < size; i++) { | |
3551 | blob_data[i].red = red[i]; | |
3552 | blob_data[i].green = green[i]; | |
3553 | blob_data[i].blue = blue[i]; | |
3554 | } | |
3555 | ||
3a09f737 | 3556 | state->acquire_ctx = ctx; |
5488dc16 LL |
3557 | crtc_state = drm_atomic_get_crtc_state(state, crtc); |
3558 | if (IS_ERR(crtc_state)) { | |
3559 | ret = PTR_ERR(crtc_state); | |
3560 | goto fail; | |
3561 | } | |
3562 | ||
3563 | /* Reset DEGAMMA_LUT and CTM properties. */ | |
3564 | ret = drm_atomic_crtc_set_property(crtc, crtc_state, | |
3565 | config->degamma_lut_property, 0); | |
3566 | if (ret) | |
3567 | goto fail; | |
3568 | ||
3569 | ret = drm_atomic_crtc_set_property(crtc, crtc_state, | |
3570 | config->ctm_property, 0); | |
3571 | if (ret) | |
3572 | goto fail; | |
3573 | ||
3574 | ret = drm_atomic_crtc_set_property(crtc, crtc_state, | |
3575 | config->gamma_lut_property, blob->base.id); | |
3576 | if (ret) | |
3577 | goto fail; | |
3578 | ||
3579 | ret = drm_atomic_commit(state); | |
5488dc16 | 3580 | |
3a09f737 | 3581 | fail: |
0853695c | 3582 | drm_atomic_state_put(state); |
6472e509 | 3583 | drm_property_blob_put(blob); |
7ea77283 | 3584 | return ret; |
5488dc16 LL |
3585 | } |
3586 | EXPORT_SYMBOL(drm_atomic_helper_legacy_gamma_set); |