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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 | |
fc596660 | 462 | * update and adds any additional connectors needed for full modesets and calls |
6806cdf9 DV |
463 | * down into &drm_crtc_helper_funcs.mode_fixup and |
464 | * &drm_encoder_helper_funcs.mode_fixup or | |
465 | * &drm_encoder_helper_funcs.atomic_check functions of the driver backend. | |
466 | * | |
467 | * &drm_crtc_state.mode_changed is set when the input mode is changed. | |
468 | * &drm_crtc_state.connectors_changed is set when a connector is added or | |
469 | * removed from the crtc. &drm_crtc_state.active_changed is set when | |
470 | * &drm_crtc_state.active changes, which is used for DPMS. | |
d807ed1c | 471 | * See also: drm_atomic_crtc_needs_modeset() |
d9b13620 DV |
472 | * |
473 | * IMPORTANT: | |
474 | * | |
6806cdf9 DV |
475 | * Drivers which set &drm_crtc_state.mode_changed (e.g. in their |
476 | * &drm_plane_helper_funcs.atomic_check hooks if a plane update can't be done | |
477 | * without a full modeset) _must_ call this function afterwards after that | |
478 | * change. It is permitted to call this function multiple times for the same | |
479 | * update, e.g. when the &drm_crtc_helper_funcs.atomic_check functions depend | |
480 | * upon the adjusted dotclock for fifo space allocation and watermark | |
481 | * computation. | |
d9b13620 | 482 | * |
c39032a8 | 483 | * RETURNS: |
d9b13620 DV |
484 | * Zero for success or -errno |
485 | */ | |
486 | int | |
934ce1c2 | 487 | drm_atomic_helper_check_modeset(struct drm_device *dev, |
623369e5 DV |
488 | struct drm_atomic_state *state) |
489 | { | |
623369e5 | 490 | struct drm_crtc *crtc; |
415c3ac3 | 491 | struct drm_crtc_state *old_crtc_state, *new_crtc_state; |
df63b999 | 492 | struct drm_connector *connector; |
415c3ac3 | 493 | struct drm_connector_state *old_connector_state, *new_connector_state; |
623369e5 DV |
494 | int i, ret; |
495 | ||
415c3ac3 ML |
496 | for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) { |
497 | if (!drm_mode_equal(&old_crtc_state->mode, &new_crtc_state->mode)) { | |
fa3ab4c2 VS |
498 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] mode changed\n", |
499 | crtc->base.id, crtc->name); | |
415c3ac3 | 500 | new_crtc_state->mode_changed = true; |
623369e5 DV |
501 | } |
502 | ||
415c3ac3 | 503 | if (old_crtc_state->enable != new_crtc_state->enable) { |
fa3ab4c2 VS |
504 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] enable changed\n", |
505 | crtc->base.id, crtc->name); | |
fc596660 ML |
506 | |
507 | /* | |
508 | * For clarity this assignment is done here, but | |
509 | * enable == 0 is only true when there are no | |
510 | * connectors and a NULL mode. | |
511 | * | |
512 | * The other way around is true as well. enable != 0 | |
513 | * iff connectors are attached and a mode is set. | |
514 | */ | |
415c3ac3 ML |
515 | new_crtc_state->mode_changed = true; |
516 | new_crtc_state->connectors_changed = true; | |
623369e5 DV |
517 | } |
518 | } | |
519 | ||
8248b65d ML |
520 | ret = handle_conflicting_encoders(state, state->legacy_set_config); |
521 | if (ret) | |
522 | return ret; | |
40616a26 | 523 | |
415c3ac3 | 524 | for_each_oldnew_connector_in_state(state, connector, old_connector_state, new_connector_state, i) { |
623369e5 | 525 | /* |
d807ed1c BS |
526 | * This only sets crtc->connectors_changed for routing changes, |
527 | * drivers must set crtc->connectors_changed themselves when | |
528 | * connector properties need to be updated. | |
623369e5 | 529 | */ |
9459545b | 530 | ret = update_connector_routing(state, connector, |
415c3ac3 ML |
531 | old_connector_state, |
532 | new_connector_state); | |
623369e5 DV |
533 | if (ret) |
534 | return ret; | |
415c3ac3 | 535 | if (old_connector_state->crtc) { |
b4d93679 ML |
536 | new_crtc_state = drm_atomic_get_new_crtc_state(state, |
537 | old_connector_state->crtc); | |
415c3ac3 ML |
538 | if (old_connector_state->link_status != |
539 | new_connector_state->link_status) | |
540 | new_crtc_state->connectors_changed = true; | |
40ee6fbe | 541 | } |
623369e5 DV |
542 | } |
543 | ||
544 | /* | |
545 | * After all the routing has been prepared we need to add in any | |
546 | * connector which is itself unchanged, but who's crtc changes it's | |
547 | * configuration. This must be done before calling mode_fixup in case a | |
548 | * crtc only changed its mode but has the same set of connectors. | |
549 | */ | |
415c3ac3 | 550 | for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) { |
14de6c44 | 551 | bool has_connectors = |
415c3ac3 | 552 | !!new_crtc_state->connector_mask; |
623369e5 | 553 | |
eab3bbef DV |
554 | /* |
555 | * We must set ->active_changed after walking connectors for | |
556 | * otherwise an update that only changes active would result in | |
557 | * a full modeset because update_connector_routing force that. | |
558 | */ | |
415c3ac3 | 559 | if (old_crtc_state->active != new_crtc_state->active) { |
fa3ab4c2 VS |
560 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] active changed\n", |
561 | crtc->base.id, crtc->name); | |
415c3ac3 | 562 | new_crtc_state->active_changed = true; |
eab3bbef DV |
563 | } |
564 | ||
415c3ac3 | 565 | if (!drm_atomic_crtc_needs_modeset(new_crtc_state)) |
623369e5 DV |
566 | continue; |
567 | ||
fa3ab4c2 VS |
568 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] needs all connectors, enable: %c, active: %c\n", |
569 | crtc->base.id, crtc->name, | |
415c3ac3 ML |
570 | new_crtc_state->enable ? 'y' : 'n', |
571 | new_crtc_state->active ? 'y' : 'n'); | |
623369e5 DV |
572 | |
573 | ret = drm_atomic_add_affected_connectors(state, crtc); | |
574 | if (ret != 0) | |
575 | return ret; | |
576 | ||
57744aa7 ML |
577 | ret = drm_atomic_add_affected_planes(state, crtc); |
578 | if (ret != 0) | |
579 | return ret; | |
580 | ||
415c3ac3 | 581 | if (new_crtc_state->enable != has_connectors) { |
fa3ab4c2 VS |
582 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] enabled/connectors mismatch\n", |
583 | crtc->base.id, crtc->name); | |
623369e5 DV |
584 | |
585 | return -EINVAL; | |
586 | } | |
587 | } | |
588 | ||
589 | return mode_fixup(state); | |
590 | } | |
d9b13620 | 591 | EXPORT_SYMBOL(drm_atomic_helper_check_modeset); |
623369e5 | 592 | |
c2fcd274 | 593 | /** |
f98bd3ef | 594 | * drm_atomic_helper_check_planes - validate state object for planes changes |
c2fcd274 DV |
595 | * @dev: DRM device |
596 | * @state: the driver state object | |
597 | * | |
598 | * Check the state object to see if the requested state is physically possible. | |
d9b13620 | 599 | * This does all the plane update related checks using by calling into the |
6806cdf9 DV |
600 | * &drm_crtc_helper_funcs.atomic_check and &drm_plane_helper_funcs.atomic_check |
601 | * hooks provided by the driver. | |
c2fcd274 | 602 | * |
6806cdf9 | 603 | * It also sets &drm_crtc_state.planes_changed to indicate that a crtc has |
fc596660 ML |
604 | * updated planes. |
605 | * | |
c39032a8 | 606 | * RETURNS: |
c2fcd274 DV |
607 | * Zero for success or -errno |
608 | */ | |
d9b13620 DV |
609 | int |
610 | drm_atomic_helper_check_planes(struct drm_device *dev, | |
611 | struct drm_atomic_state *state) | |
c2fcd274 | 612 | { |
df63b999 | 613 | struct drm_crtc *crtc; |
415c3ac3 | 614 | struct drm_crtc_state *new_crtc_state; |
df63b999 | 615 | struct drm_plane *plane; |
415c3ac3 | 616 | struct drm_plane_state *new_plane_state, *old_plane_state; |
c2fcd274 DV |
617 | int i, ret = 0; |
618 | ||
415c3ac3 | 619 | for_each_oldnew_plane_in_state(state, plane, old_plane_state, new_plane_state, i) { |
b5ceff20 | 620 | const struct drm_plane_helper_funcs *funcs; |
c2fcd274 DV |
621 | |
622 | funcs = plane->helper_private; | |
623 | ||
415c3ac3 | 624 | drm_atomic_helper_plane_changed(state, old_plane_state, new_plane_state, plane); |
c2fcd274 DV |
625 | |
626 | if (!funcs || !funcs->atomic_check) | |
627 | continue; | |
628 | ||
415c3ac3 | 629 | ret = funcs->atomic_check(plane, new_plane_state); |
c2fcd274 | 630 | if (ret) { |
9f4c97a2 VS |
631 | DRM_DEBUG_ATOMIC("[PLANE:%d:%s] atomic driver check failed\n", |
632 | plane->base.id, plane->name); | |
c2fcd274 DV |
633 | return ret; |
634 | } | |
635 | } | |
636 | ||
415c3ac3 | 637 | for_each_new_crtc_in_state(state, crtc, new_crtc_state, i) { |
b5ceff20 | 638 | const struct drm_crtc_helper_funcs *funcs; |
c2fcd274 DV |
639 | |
640 | funcs = crtc->helper_private; | |
641 | ||
642 | if (!funcs || !funcs->atomic_check) | |
643 | continue; | |
644 | ||
415c3ac3 | 645 | ret = funcs->atomic_check(crtc, new_crtc_state); |
c2fcd274 | 646 | if (ret) { |
fa3ab4c2 VS |
647 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] atomic driver check failed\n", |
648 | crtc->base.id, crtc->name); | |
c2fcd274 DV |
649 | return ret; |
650 | } | |
651 | } | |
652 | ||
d9b13620 DV |
653 | return ret; |
654 | } | |
655 | EXPORT_SYMBOL(drm_atomic_helper_check_planes); | |
656 | ||
657 | /** | |
658 | * drm_atomic_helper_check - validate state object | |
659 | * @dev: DRM device | |
660 | * @state: the driver state object | |
661 | * | |
662 | * Check the state object to see if the requested state is physically possible. | |
663 | * Only crtcs and planes have check callbacks, so for any additional (global) | |
664 | * checking that a driver needs it can simply wrap that around this function. | |
6806cdf9 DV |
665 | * Drivers without such needs can directly use this as their |
666 | * &drm_mode_config_funcs.atomic_check callback. | |
d9b13620 | 667 | * |
b4274fbe DV |
668 | * This just wraps the two parts of the state checking for planes and modeset |
669 | * state in the default order: First it calls drm_atomic_helper_check_modeset() | |
670 | * and then drm_atomic_helper_check_planes(). The assumption is that the | |
6806cdf9 DV |
671 | * @drm_plane_helper_funcs.atomic_check and @drm_crtc_helper_funcs.atomic_check |
672 | * functions depend upon an updated adjusted_mode.clock to e.g. properly compute | |
673 | * watermarks. | |
b4274fbe | 674 | * |
c39032a8 | 675 | * RETURNS: |
d9b13620 DV |
676 | * Zero for success or -errno |
677 | */ | |
678 | int drm_atomic_helper_check(struct drm_device *dev, | |
679 | struct drm_atomic_state *state) | |
680 | { | |
681 | int ret; | |
682 | ||
b4274fbe | 683 | ret = drm_atomic_helper_check_modeset(dev, state); |
d9b13620 DV |
684 | if (ret) |
685 | return ret; | |
686 | ||
b4274fbe | 687 | ret = drm_atomic_helper_check_planes(dev, state); |
934ce1c2 RC |
688 | if (ret) |
689 | return ret; | |
690 | ||
c2fcd274 DV |
691 | return ret; |
692 | } | |
693 | EXPORT_SYMBOL(drm_atomic_helper_check); | |
694 | ||
623369e5 DV |
695 | static void |
696 | disable_outputs(struct drm_device *dev, struct drm_atomic_state *old_state) | |
697 | { | |
df63b999 | 698 | struct drm_connector *connector; |
415c3ac3 | 699 | struct drm_connector_state *old_conn_state, *new_conn_state; |
df63b999 | 700 | struct drm_crtc *crtc; |
415c3ac3 | 701 | struct drm_crtc_state *old_crtc_state, *new_crtc_state; |
623369e5 DV |
702 | int i; |
703 | ||
415c3ac3 | 704 | for_each_oldnew_connector_in_state(old_state, connector, old_conn_state, new_conn_state, i) { |
b5ceff20 | 705 | const struct drm_encoder_helper_funcs *funcs; |
623369e5 DV |
706 | struct drm_encoder *encoder; |
707 | ||
623369e5 DV |
708 | /* Shut down everything that's in the changeset and currently |
709 | * still on. So need to check the old, saved state. */ | |
df63b999 | 710 | if (!old_conn_state->crtc) |
623369e5 DV |
711 | continue; |
712 | ||
b4d93679 | 713 | old_crtc_state = drm_atomic_get_old_crtc_state(old_state, old_conn_state->crtc); |
eab3bbef | 714 | |
4218a32f | 715 | if (!old_crtc_state->active || |
2465ff62 | 716 | !drm_atomic_crtc_needs_modeset(old_conn_state->crtc->state)) |
eab3bbef DV |
717 | continue; |
718 | ||
46df9adb | 719 | encoder = old_conn_state->best_encoder; |
623369e5 | 720 | |
46df9adb RC |
721 | /* We shouldn't get this far if we didn't previously have |
722 | * an encoder.. but WARN_ON() rather than explode. | |
723 | */ | |
724 | if (WARN_ON(!encoder)) | |
623369e5 DV |
725 | continue; |
726 | ||
727 | funcs = encoder->helper_private; | |
728 | ||
17a38d9c DV |
729 | DRM_DEBUG_ATOMIC("disabling [ENCODER:%d:%s]\n", |
730 | encoder->base.id, encoder->name); | |
95d6eb3b | 731 | |
623369e5 DV |
732 | /* |
733 | * Each encoder has at most one connector (since we always steal | |
f98bd3ef | 734 | * it away), so we won't call disable hooks twice. |
623369e5 | 735 | */ |
862e686c | 736 | drm_bridge_disable(encoder->bridge); |
623369e5 DV |
737 | |
738 | /* Right function depends upon target state. */ | |
2827635e | 739 | if (funcs) { |
415c3ac3 | 740 | if (new_conn_state->crtc && funcs->prepare) |
2827635e NT |
741 | funcs->prepare(encoder); |
742 | else if (funcs->disable) | |
743 | funcs->disable(encoder); | |
744 | else if (funcs->dpms) | |
745 | funcs->dpms(encoder, DRM_MODE_DPMS_OFF); | |
746 | } | |
623369e5 | 747 | |
862e686c | 748 | drm_bridge_post_disable(encoder->bridge); |
623369e5 DV |
749 | } |
750 | ||
415c3ac3 | 751 | for_each_oldnew_crtc_in_state(old_state, crtc, old_crtc_state, new_crtc_state, i) { |
b5ceff20 | 752 | const struct drm_crtc_helper_funcs *funcs; |
623369e5 DV |
753 | |
754 | /* Shut down everything that needs a full modeset. */ | |
415c3ac3 | 755 | if (!drm_atomic_crtc_needs_modeset(new_crtc_state)) |
eab3bbef DV |
756 | continue; |
757 | ||
758 | if (!old_crtc_state->active) | |
623369e5 DV |
759 | continue; |
760 | ||
761 | funcs = crtc->helper_private; | |
762 | ||
fa3ab4c2 VS |
763 | DRM_DEBUG_ATOMIC("disabling [CRTC:%d:%s]\n", |
764 | crtc->base.id, crtc->name); | |
95d6eb3b DV |
765 | |
766 | ||
623369e5 | 767 | /* Right function depends upon target state. */ |
415c3ac3 | 768 | if (new_crtc_state->enable && funcs->prepare) |
623369e5 | 769 | funcs->prepare(crtc); |
c9ac8b4c LY |
770 | else if (funcs->atomic_disable) |
771 | funcs->atomic_disable(crtc, old_crtc_state); | |
623369e5 DV |
772 | else if (funcs->disable) |
773 | funcs->disable(crtc); | |
774 | else | |
775 | funcs->dpms(crtc, DRM_MODE_DPMS_OFF); | |
776 | } | |
777 | } | |
778 | ||
4c18d301 DV |
779 | /** |
780 | * drm_atomic_helper_update_legacy_modeset_state - update legacy modeset state | |
781 | * @dev: DRM device | |
782 | * @old_state: atomic state object with old state structures | |
783 | * | |
784 | * This function updates all the various legacy modeset state pointers in | |
785 | * connectors, encoders and crtcs. It also updates the timestamping constants | |
786 | * used for precise vblank timestamps by calling | |
787 | * drm_calc_timestamping_constants(). | |
788 | * | |
789 | * Drivers can use this for building their own atomic commit if they don't have | |
790 | * a pure helper-based modeset implementation. | |
791 | */ | |
792 | void | |
793 | drm_atomic_helper_update_legacy_modeset_state(struct drm_device *dev, | |
794 | struct drm_atomic_state *old_state) | |
623369e5 | 795 | { |
df63b999 | 796 | struct drm_connector *connector; |
415c3ac3 | 797 | struct drm_connector_state *old_conn_state, *new_conn_state; |
df63b999 | 798 | struct drm_crtc *crtc; |
415c3ac3 | 799 | struct drm_crtc_state *new_crtc_state; |
623369e5 DV |
800 | int i; |
801 | ||
8c10342c | 802 | /* clear out existing links and update dpms */ |
415c3ac3 | 803 | for_each_oldnew_connector_in_state(old_state, connector, old_conn_state, new_conn_state, i) { |
8c10342c ML |
804 | if (connector->encoder) { |
805 | WARN_ON(!connector->encoder->crtc); | |
806 | ||
807 | connector->encoder->crtc = NULL; | |
808 | connector->encoder = NULL; | |
809 | } | |
623369e5 | 810 | |
415c3ac3 | 811 | crtc = new_conn_state->crtc; |
8c10342c ML |
812 | if ((!crtc && old_conn_state->crtc) || |
813 | (crtc && drm_atomic_crtc_needs_modeset(crtc->state))) { | |
814 | struct drm_property *dpms_prop = | |
815 | dev->mode_config.dpms_property; | |
816 | int mode = DRM_MODE_DPMS_OFF; | |
623369e5 | 817 | |
8c10342c ML |
818 | if (crtc && crtc->state->active) |
819 | mode = DRM_MODE_DPMS_ON; | |
820 | ||
821 | connector->dpms = mode; | |
822 | drm_object_property_set_value(&connector->base, | |
823 | dpms_prop, mode); | |
824 | } | |
623369e5 DV |
825 | } |
826 | ||
827 | /* set new links */ | |
415c3ac3 ML |
828 | for_each_new_connector_in_state(old_state, connector, new_conn_state, i) { |
829 | if (!new_conn_state->crtc) | |
623369e5 DV |
830 | continue; |
831 | ||
415c3ac3 | 832 | if (WARN_ON(!new_conn_state->best_encoder)) |
623369e5 DV |
833 | continue; |
834 | ||
415c3ac3 ML |
835 | connector->encoder = new_conn_state->best_encoder; |
836 | connector->encoder->crtc = new_conn_state->crtc; | |
623369e5 DV |
837 | } |
838 | ||
839 | /* set legacy state in the crtc structure */ | |
415c3ac3 | 840 | for_each_new_crtc_in_state(old_state, crtc, new_crtc_state, i) { |
2660801f | 841 | struct drm_plane *primary = crtc->primary; |
b4d93679 | 842 | struct drm_plane_state *new_plane_state; |
2660801f | 843 | |
415c3ac3 ML |
844 | crtc->mode = new_crtc_state->mode; |
845 | crtc->enabled = new_crtc_state->enable; | |
2660801f | 846 | |
b4d93679 ML |
847 | new_plane_state = |
848 | drm_atomic_get_new_plane_state(old_state, primary); | |
849 | ||
850 | if (new_plane_state && new_plane_state->crtc == crtc) { | |
851 | crtc->x = new_plane_state->src_x >> 16; | |
852 | crtc->y = new_plane_state->src_y >> 16; | |
2660801f | 853 | } |
3d51d2d2 | 854 | |
415c3ac3 | 855 | if (new_crtc_state->enable) |
3d51d2d2 | 856 | drm_calc_timestamping_constants(crtc, |
415c3ac3 | 857 | &new_crtc_state->adjusted_mode); |
623369e5 DV |
858 | } |
859 | } | |
4c18d301 | 860 | EXPORT_SYMBOL(drm_atomic_helper_update_legacy_modeset_state); |
623369e5 DV |
861 | |
862 | static void | |
863 | crtc_set_mode(struct drm_device *dev, struct drm_atomic_state *old_state) | |
864 | { | |
df63b999 | 865 | struct drm_crtc *crtc; |
415c3ac3 | 866 | struct drm_crtc_state *new_crtc_state; |
df63b999 | 867 | struct drm_connector *connector; |
415c3ac3 | 868 | struct drm_connector_state *new_conn_state; |
623369e5 DV |
869 | int i; |
870 | ||
415c3ac3 | 871 | for_each_new_crtc_in_state(old_state, crtc, new_crtc_state, i) { |
b5ceff20 | 872 | const struct drm_crtc_helper_funcs *funcs; |
623369e5 | 873 | |
415c3ac3 | 874 | if (!new_crtc_state->mode_changed) |
623369e5 DV |
875 | continue; |
876 | ||
877 | funcs = crtc->helper_private; | |
878 | ||
415c3ac3 | 879 | if (new_crtc_state->enable && funcs->mode_set_nofb) { |
fa3ab4c2 VS |
880 | DRM_DEBUG_ATOMIC("modeset on [CRTC:%d:%s]\n", |
881 | crtc->base.id, crtc->name); | |
95d6eb3b | 882 | |
623369e5 | 883 | funcs->mode_set_nofb(crtc); |
95d6eb3b | 884 | } |
623369e5 DV |
885 | } |
886 | ||
415c3ac3 | 887 | for_each_new_connector_in_state(old_state, connector, new_conn_state, i) { |
b5ceff20 | 888 | const struct drm_encoder_helper_funcs *funcs; |
623369e5 DV |
889 | struct drm_encoder *encoder; |
890 | struct drm_display_mode *mode, *adjusted_mode; | |
891 | ||
415c3ac3 | 892 | if (!new_conn_state->best_encoder) |
623369e5 DV |
893 | continue; |
894 | ||
415c3ac3 | 895 | encoder = new_conn_state->best_encoder; |
623369e5 | 896 | funcs = encoder->helper_private; |
415c3ac3 | 897 | new_crtc_state = new_conn_state->crtc->state; |
623369e5 DV |
898 | mode = &new_crtc_state->mode; |
899 | adjusted_mode = &new_crtc_state->adjusted_mode; | |
900 | ||
eab3bbef DV |
901 | if (!new_crtc_state->mode_changed) |
902 | continue; | |
903 | ||
17a38d9c DV |
904 | DRM_DEBUG_ATOMIC("modeset on [ENCODER:%d:%s]\n", |
905 | encoder->base.id, encoder->name); | |
95d6eb3b | 906 | |
623369e5 DV |
907 | /* |
908 | * Each encoder has at most one connector (since we always steal | |
f98bd3ef | 909 | * it away), so we won't call mode_set hooks twice. |
623369e5 | 910 | */ |
fe4a11c9 PZ |
911 | if (funcs && funcs->atomic_mode_set) { |
912 | funcs->atomic_mode_set(encoder, new_crtc_state, | |
415c3ac3 | 913 | new_conn_state); |
fe4a11c9 | 914 | } else if (funcs && funcs->mode_set) { |
c982bd90 | 915 | funcs->mode_set(encoder, mode, adjusted_mode); |
fe4a11c9 | 916 | } |
623369e5 | 917 | |
862e686c | 918 | drm_bridge_mode_set(encoder->bridge, mode, adjusted_mode); |
623369e5 DV |
919 | } |
920 | } | |
921 | ||
922 | /** | |
1af434a9 | 923 | * drm_atomic_helper_commit_modeset_disables - modeset commit to disable outputs |
623369e5 | 924 | * @dev: DRM device |
a072f809 | 925 | * @old_state: atomic state object with old state structures |
623369e5 | 926 | * |
1af434a9 | 927 | * This function shuts down all the outputs that need to be shut down and |
623369e5 | 928 | * prepares them (if required) with the new mode. |
1af434a9 | 929 | * |
60acc4eb | 930 | * For compatibility with legacy crtc helpers this should be called before |
1af434a9 DV |
931 | * drm_atomic_helper_commit_planes(), which is what the default commit function |
932 | * does. But drivers with different needs can group the modeset commits together | |
933 | * and do the plane commits at the end. This is useful for drivers doing runtime | |
934 | * PM since planes updates then only happen when the CRTC is actually enabled. | |
623369e5 | 935 | */ |
1af434a9 DV |
936 | void drm_atomic_helper_commit_modeset_disables(struct drm_device *dev, |
937 | struct drm_atomic_state *old_state) | |
623369e5 | 938 | { |
a072f809 | 939 | disable_outputs(dev, old_state); |
4c18d301 DV |
940 | |
941 | drm_atomic_helper_update_legacy_modeset_state(dev, old_state); | |
942 | ||
a072f809 | 943 | crtc_set_mode(dev, old_state); |
623369e5 | 944 | } |
1af434a9 | 945 | EXPORT_SYMBOL(drm_atomic_helper_commit_modeset_disables); |
623369e5 DV |
946 | |
947 | /** | |
1af434a9 | 948 | * drm_atomic_helper_commit_modeset_enables - modeset commit to enable outputs |
623369e5 DV |
949 | * @dev: DRM device |
950 | * @old_state: atomic state object with old state structures | |
951 | * | |
1af434a9 DV |
952 | * This function enables all the outputs with the new configuration which had to |
953 | * be turned off for the update. | |
954 | * | |
60acc4eb | 955 | * For compatibility with legacy crtc helpers this should be called after |
1af434a9 DV |
956 | * drm_atomic_helper_commit_planes(), which is what the default commit function |
957 | * does. But drivers with different needs can group the modeset commits together | |
958 | * and do the plane commits at the end. This is useful for drivers doing runtime | |
959 | * PM since planes updates then only happen when the CRTC is actually enabled. | |
623369e5 | 960 | */ |
1af434a9 DV |
961 | void drm_atomic_helper_commit_modeset_enables(struct drm_device *dev, |
962 | struct drm_atomic_state *old_state) | |
623369e5 | 963 | { |
df63b999 | 964 | struct drm_crtc *crtc; |
415c3ac3 | 965 | struct drm_crtc_state *new_crtc_state; |
df63b999 | 966 | struct drm_connector *connector; |
415c3ac3 | 967 | struct drm_connector_state *new_conn_state; |
623369e5 DV |
968 | int i; |
969 | ||
415c3ac3 | 970 | for_each_new_crtc_in_state(old_state, crtc, new_crtc_state, i) { |
b5ceff20 | 971 | const struct drm_crtc_helper_funcs *funcs; |
623369e5 DV |
972 | |
973 | /* Need to filter out CRTCs where only planes change. */ | |
415c3ac3 | 974 | if (!drm_atomic_crtc_needs_modeset(new_crtc_state)) |
eab3bbef DV |
975 | continue; |
976 | ||
415c3ac3 | 977 | if (!new_crtc_state->active) |
623369e5 DV |
978 | continue; |
979 | ||
980 | funcs = crtc->helper_private; | |
981 | ||
415c3ac3 | 982 | if (new_crtc_state->enable) { |
fa3ab4c2 VS |
983 | DRM_DEBUG_ATOMIC("enabling [CRTC:%d:%s]\n", |
984 | crtc->base.id, crtc->name); | |
95d6eb3b | 985 | |
ee0a89cf DV |
986 | if (funcs->enable) |
987 | funcs->enable(crtc); | |
988 | else | |
989 | funcs->commit(crtc); | |
990 | } | |
623369e5 DV |
991 | } |
992 | ||
415c3ac3 | 993 | for_each_new_connector_in_state(old_state, connector, new_conn_state, i) { |
b5ceff20 | 994 | const struct drm_encoder_helper_funcs *funcs; |
623369e5 DV |
995 | struct drm_encoder *encoder; |
996 | ||
415c3ac3 | 997 | if (!new_conn_state->best_encoder) |
623369e5 DV |
998 | continue; |
999 | ||
415c3ac3 ML |
1000 | if (!new_conn_state->crtc->state->active || |
1001 | !drm_atomic_crtc_needs_modeset(new_conn_state->crtc->state)) | |
eab3bbef DV |
1002 | continue; |
1003 | ||
415c3ac3 | 1004 | encoder = new_conn_state->best_encoder; |
623369e5 DV |
1005 | funcs = encoder->helper_private; |
1006 | ||
17a38d9c DV |
1007 | DRM_DEBUG_ATOMIC("enabling [ENCODER:%d:%s]\n", |
1008 | encoder->base.id, encoder->name); | |
95d6eb3b | 1009 | |
623369e5 DV |
1010 | /* |
1011 | * Each encoder has at most one connector (since we always steal | |
f98bd3ef | 1012 | * it away), so we won't call enable hooks twice. |
623369e5 | 1013 | */ |
862e686c | 1014 | drm_bridge_pre_enable(encoder->bridge); |
623369e5 | 1015 | |
2827635e NT |
1016 | if (funcs) { |
1017 | if (funcs->enable) | |
1018 | funcs->enable(encoder); | |
1019 | else if (funcs->commit) | |
1020 | funcs->commit(encoder); | |
1021 | } | |
623369e5 | 1022 | |
862e686c | 1023 | drm_bridge_enable(encoder->bridge); |
623369e5 DV |
1024 | } |
1025 | } | |
1af434a9 | 1026 | EXPORT_SYMBOL(drm_atomic_helper_commit_modeset_enables); |
623369e5 | 1027 | |
4c5b7f3a RC |
1028 | /** |
1029 | * drm_atomic_helper_wait_for_fences - wait for fences stashed in plane state | |
1030 | * @dev: DRM device | |
1031 | * @state: atomic state object with old state structures | |
1ea0c02e DV |
1032 | * @pre_swap: If true, do an interruptible wait, and @state is the new state. |
1033 | * Otherwise @state is the old state. | |
4c5b7f3a RC |
1034 | * |
1035 | * For implicit sync, driver should fish the exclusive fence out from the | |
1036 | * incoming fb's and stash it in the drm_plane_state. This is called after | |
1037 | * drm_atomic_helper_swap_state() so it uses the current plane state (and | |
1038 | * just uses the atomic state to find the changed planes) | |
f6ce410a | 1039 | * |
1ea0c02e DV |
1040 | * Note that @pre_swap is needed since the point where we block for fences moves |
1041 | * around depending upon whether an atomic commit is blocking or | |
1042 | * non-blocking. For async commit all waiting needs to happen after | |
1043 | * drm_atomic_helper_swap_state() is called, but for synchronous commits we want | |
1044 | * to wait **before** we do anything that can't be easily rolled back. That is | |
1045 | * before we call drm_atomic_helper_swap_state(). | |
1046 | * | |
f54d1867 | 1047 | * Returns zero if success or < 0 if dma_fence_wait() fails. |
4c5b7f3a | 1048 | */ |
f6ce410a GP |
1049 | int drm_atomic_helper_wait_for_fences(struct drm_device *dev, |
1050 | struct drm_atomic_state *state, | |
1051 | bool pre_swap) | |
e2330f07 | 1052 | { |
df63b999 | 1053 | struct drm_plane *plane; |
415c3ac3 | 1054 | struct drm_plane_state *new_plane_state; |
f6ce410a | 1055 | int i, ret; |
e2330f07 | 1056 | |
415c3ac3 ML |
1057 | for_each_new_plane_in_state(state, plane, new_plane_state, i) { |
1058 | if (!new_plane_state->fence) | |
e2330f07 DV |
1059 | continue; |
1060 | ||
415c3ac3 | 1061 | WARN_ON(!new_plane_state->fb); |
f6ce410a GP |
1062 | |
1063 | /* | |
1064 | * If waiting for fences pre-swap (ie: nonblock), userspace can | |
1065 | * still interrupt the operation. Instead of blocking until the | |
1066 | * timer expires, make the wait interruptible. | |
1067 | */ | |
415c3ac3 | 1068 | ret = dma_fence_wait(new_plane_state->fence, pre_swap); |
f6ce410a GP |
1069 | if (ret) |
1070 | return ret; | |
e2330f07 | 1071 | |
415c3ac3 ML |
1072 | dma_fence_put(new_plane_state->fence); |
1073 | new_plane_state->fence = NULL; | |
e2330f07 | 1074 | } |
f6ce410a GP |
1075 | |
1076 | return 0; | |
e2330f07 | 1077 | } |
4c5b7f3a | 1078 | EXPORT_SYMBOL(drm_atomic_helper_wait_for_fences); |
e2330f07 | 1079 | |
5ee3229c RC |
1080 | /** |
1081 | * drm_atomic_helper_wait_for_vblanks - wait for vblank on crtcs | |
1082 | * @dev: DRM device | |
1083 | * @old_state: atomic state object with old state structures | |
1084 | * | |
1085 | * Helper to, after atomic commit, wait for vblanks on all effected | |
1086 | * crtcs (ie. before cleaning up old framebuffers using | |
ab58e338 DV |
1087 | * drm_atomic_helper_cleanup_planes()). It will only wait on crtcs where the |
1088 | * framebuffers have actually changed to optimize for the legacy cursor and | |
1089 | * plane update use-case. | |
5ee3229c RC |
1090 | */ |
1091 | void | |
1092 | drm_atomic_helper_wait_for_vblanks(struct drm_device *dev, | |
1093 | struct drm_atomic_state *old_state) | |
623369e5 DV |
1094 | { |
1095 | struct drm_crtc *crtc; | |
415c3ac3 | 1096 | struct drm_crtc_state *old_crtc_state, *new_crtc_state; |
623369e5 | 1097 | int i, ret; |
bdc57146 | 1098 | unsigned crtc_mask = 0; |
623369e5 | 1099 | |
bdc57146 ML |
1100 | /* |
1101 | * Legacy cursor ioctls are completely unsynced, and userspace | |
1102 | * relies on that (by doing tons of cursor updates). | |
1103 | */ | |
1104 | if (old_state->legacy_cursor_update) | |
1105 | return; | |
623369e5 | 1106 | |
415c3ac3 | 1107 | for_each_oldnew_crtc_in_state(old_state, crtc, old_crtc_state, new_crtc_state, i) { |
a3fbb53f | 1108 | if (!new_crtc_state->active || !new_crtc_state->planes_changed) |
ab58e338 DV |
1109 | continue; |
1110 | ||
623369e5 DV |
1111 | ret = drm_crtc_vblank_get(crtc); |
1112 | if (ret != 0) | |
1113 | continue; | |
1114 | ||
bdc57146 ML |
1115 | crtc_mask |= drm_crtc_mask(crtc); |
1116 | old_state->crtcs[i].last_vblank_count = drm_crtc_vblank_count(crtc); | |
623369e5 DV |
1117 | } |
1118 | ||
415c3ac3 | 1119 | for_each_old_crtc_in_state(old_state, crtc, old_crtc_state, i) { |
bdc57146 | 1120 | if (!(crtc_mask & drm_crtc_mask(crtc))) |
623369e5 DV |
1121 | continue; |
1122 | ||
1123 | ret = wait_event_timeout(dev->vblank[i].queue, | |
bdc57146 | 1124 | old_state->crtcs[i].last_vblank_count != |
d4853630 | 1125 | drm_crtc_vblank_count(crtc), |
623369e5 DV |
1126 | msecs_to_jiffies(50)); |
1127 | ||
6ac7c548 RK |
1128 | WARN(!ret, "[CRTC:%d:%s] vblank wait timed out\n", |
1129 | crtc->base.id, crtc->name); | |
8d4d0d70 | 1130 | |
623369e5 DV |
1131 | drm_crtc_vblank_put(crtc); |
1132 | } | |
1133 | } | |
5ee3229c | 1134 | EXPORT_SYMBOL(drm_atomic_helper_wait_for_vblanks); |
623369e5 DV |
1135 | |
1136 | /** | |
9f2a7950 | 1137 | * drm_atomic_helper_commit_tail - commit atomic update to hardware |
1ea0c02e | 1138 | * @old_state: atomic state object with old state structures |
623369e5 | 1139 | * |
6806cdf9 DV |
1140 | * This is the default implementation for the |
1141 | * &drm_mode_config_helper_funcs.atomic_commit_tail hook. | |
623369e5 | 1142 | * |
9f2a7950 DV |
1143 | * Note that the default ordering of how the various stages are called is to |
1144 | * match the legacy modeset helper library closest. One peculiarity of that is | |
1145 | * that it doesn't mesh well with runtime PM at all. | |
6e48ae32 | 1146 | * |
9f2a7950 | 1147 | * For drivers supporting runtime PM the recommended sequence is instead :: |
6e48ae32 | 1148 | * |
1ea0c02e | 1149 | * drm_atomic_helper_commit_modeset_disables(dev, old_state); |
6e48ae32 | 1150 | * |
1ea0c02e | 1151 | * drm_atomic_helper_commit_modeset_enables(dev, old_state); |
6e48ae32 | 1152 | * |
1ea0c02e | 1153 | * drm_atomic_helper_commit_planes(dev, old_state, |
2b58e98d | 1154 | * DRM_PLANE_COMMIT_ACTIVE_ONLY); |
6e48ae32 | 1155 | * |
9f2a7950 DV |
1156 | * for committing the atomic update to hardware. See the kerneldoc entries for |
1157 | * these three functions for more details. | |
1158 | */ | |
1ea0c02e | 1159 | void drm_atomic_helper_commit_tail(struct drm_atomic_state *old_state) |
9f2a7950 | 1160 | { |
1ea0c02e | 1161 | struct drm_device *dev = old_state->dev; |
9f2a7950 | 1162 | |
1ea0c02e | 1163 | drm_atomic_helper_commit_modeset_disables(dev, old_state); |
9f2a7950 | 1164 | |
1ea0c02e | 1165 | drm_atomic_helper_commit_planes(dev, old_state, 0); |
9f2a7950 | 1166 | |
1ea0c02e | 1167 | drm_atomic_helper_commit_modeset_enables(dev, old_state); |
9f2a7950 | 1168 | |
1ea0c02e | 1169 | drm_atomic_helper_commit_hw_done(old_state); |
9f2a7950 | 1170 | |
1ea0c02e | 1171 | drm_atomic_helper_wait_for_vblanks(dev, old_state); |
9f2a7950 | 1172 | |
1ea0c02e | 1173 | drm_atomic_helper_cleanup_planes(dev, old_state); |
9f2a7950 DV |
1174 | } |
1175 | EXPORT_SYMBOL(drm_atomic_helper_commit_tail); | |
1176 | ||
1ea0c02e | 1177 | static void commit_tail(struct drm_atomic_state *old_state) |
9f2a7950 | 1178 | { |
1ea0c02e | 1179 | struct drm_device *dev = old_state->dev; |
a4b10cce | 1180 | const struct drm_mode_config_helper_funcs *funcs; |
9f2a7950 DV |
1181 | |
1182 | funcs = dev->mode_config.helper_private; | |
1183 | ||
1ea0c02e | 1184 | drm_atomic_helper_wait_for_fences(dev, old_state, false); |
9f2a7950 | 1185 | |
1ea0c02e | 1186 | drm_atomic_helper_wait_for_dependencies(old_state); |
9f2a7950 DV |
1187 | |
1188 | if (funcs && funcs->atomic_commit_tail) | |
1ea0c02e | 1189 | funcs->atomic_commit_tail(old_state); |
9f2a7950 | 1190 | else |
1ea0c02e | 1191 | drm_atomic_helper_commit_tail(old_state); |
9f2a7950 | 1192 | |
1ea0c02e | 1193 | drm_atomic_helper_commit_cleanup_done(old_state); |
9f2a7950 | 1194 | |
1ea0c02e | 1195 | drm_atomic_state_put(old_state); |
9f2a7950 DV |
1196 | } |
1197 | ||
1198 | static void commit_work(struct work_struct *work) | |
1199 | { | |
1200 | struct drm_atomic_state *state = container_of(work, | |
1201 | struct drm_atomic_state, | |
1202 | commit_work); | |
1203 | commit_tail(state); | |
1204 | } | |
1205 | ||
1206 | /** | |
1207 | * drm_atomic_helper_commit - commit validated state object | |
1208 | * @dev: DRM device | |
1209 | * @state: the driver state object | |
1210 | * @nonblock: whether nonblocking behavior is requested. | |
1211 | * | |
1212 | * This function commits a with drm_atomic_helper_check() pre-validated state | |
1213 | * object. This can still fail when e.g. the framebuffer reservation fails. This | |
1214 | * function implements nonblocking commits, using | |
1215 | * drm_atomic_helper_setup_commit() and related functions. | |
1216 | * | |
9f2a7950 | 1217 | * Committing the actual hardware state is done through the |
6806cdf9 DV |
1218 | * &drm_mode_config_helper_funcs.atomic_commit_tail callback, or it's default |
1219 | * implementation drm_atomic_helper_commit_tail(). | |
6e48ae32 | 1220 | * |
c39032a8 | 1221 | * RETURNS: |
623369e5 DV |
1222 | * Zero for success or -errno. |
1223 | */ | |
1224 | int drm_atomic_helper_commit(struct drm_device *dev, | |
1225 | struct drm_atomic_state *state, | |
286dbb8d | 1226 | bool nonblock) |
623369e5 DV |
1227 | { |
1228 | int ret; | |
1229 | ||
a095caa7 DV |
1230 | ret = drm_atomic_helper_setup_commit(state, nonblock); |
1231 | if (ret) | |
1232 | return ret; | |
1233 | ||
9f2a7950 DV |
1234 | INIT_WORK(&state->commit_work, commit_work); |
1235 | ||
623369e5 DV |
1236 | ret = drm_atomic_helper_prepare_planes(dev, state); |
1237 | if (ret) | |
1238 | return ret; | |
1239 | ||
f6ce410a GP |
1240 | if (!nonblock) { |
1241 | ret = drm_atomic_helper_wait_for_fences(dev, state, true); | |
aebe55c2 LP |
1242 | if (ret) { |
1243 | drm_atomic_helper_cleanup_planes(dev, state); | |
f6ce410a | 1244 | return ret; |
aebe55c2 | 1245 | } |
f6ce410a GP |
1246 | } |
1247 | ||
623369e5 DV |
1248 | /* |
1249 | * This is the point of no return - everything below never fails except | |
1250 | * when the hw goes bonghits. Which means we can commit the new state on | |
1251 | * the software side now. | |
1252 | */ | |
1253 | ||
5e84c269 | 1254 | drm_atomic_helper_swap_state(state, true); |
623369e5 DV |
1255 | |
1256 | /* | |
1257 | * Everything below can be run asynchronously without the need to grab | |
f98bd3ef | 1258 | * any modeset locks at all under one condition: It must be guaranteed |
623369e5 DV |
1259 | * that the asynchronous work has either been cancelled (if the driver |
1260 | * supports it, which at least requires that the framebuffers get | |
1261 | * cleaned up with drm_atomic_helper_cleanup_planes()) or completed | |
1262 | * before the new state gets committed on the software side with | |
1263 | * drm_atomic_helper_swap_state(). | |
1264 | * | |
1265 | * This scheme allows new atomic state updates to be prepared and | |
1266 | * checked in parallel to the asynchronous completion of the previous | |
1267 | * update. Which is important since compositors need to figure out the | |
1268 | * composition of the next frame right after having submitted the | |
1269 | * current layout. | |
9f2a7950 DV |
1270 | * |
1271 | * NOTE: Commit work has multiple phases, first hardware commit, then | |
1272 | * cleanup. We want them to overlap, hence need system_unbound_wq to | |
1273 | * make sure work items don't artifically stall on each another. | |
623369e5 DV |
1274 | */ |
1275 | ||
0853695c | 1276 | drm_atomic_state_get(state); |
9f2a7950 DV |
1277 | if (nonblock) |
1278 | queue_work(system_unbound_wq, &state->commit_work); | |
1279 | else | |
1280 | commit_tail(state); | |
623369e5 DV |
1281 | |
1282 | return 0; | |
1283 | } | |
1284 | EXPORT_SYMBOL(drm_atomic_helper_commit); | |
1285 | ||
e8c833a7 | 1286 | /** |
286dbb8d | 1287 | * DOC: implementing nonblocking commit |
e8c833a7 | 1288 | * |
9f2a7950 | 1289 | * Nonblocking atomic commits have to be implemented in the following sequence: |
e8c833a7 DV |
1290 | * |
1291 | * 1. Run drm_atomic_helper_prepare_planes() first. This is the only function | |
1292 | * which commit needs to call which can fail, so we want to run it first and | |
1293 | * synchronously. | |
1294 | * | |
286dbb8d | 1295 | * 2. Synchronize with any outstanding nonblocking commit worker threads which |
e8c833a7 DV |
1296 | * might be affected the new state update. This can be done by either cancelling |
1297 | * or flushing the work items, depending upon whether the driver can deal with | |
1298 | * cancelled updates. Note that it is important to ensure that the framebuffer | |
1299 | * cleanup is still done when cancelling. | |
1300 | * | |
9f2a7950 DV |
1301 | * Asynchronous workers need to have sufficient parallelism to be able to run |
1302 | * different atomic commits on different CRTCs in parallel. The simplest way to | |
1303 | * achive this is by running them on the &system_unbound_wq work queue. Note | |
1304 | * that drivers are not required to split up atomic commits and run an | |
1305 | * individual commit in parallel - userspace is supposed to do that if it cares. | |
1306 | * But it might be beneficial to do that for modesets, since those necessarily | |
1307 | * must be done as one global operation, and enabling or disabling a CRTC can | |
1308 | * take a long time. But even that is not required. | |
e8c833a7 DV |
1309 | * |
1310 | * 3. The software state is updated synchronously with | |
26196f7e | 1311 | * drm_atomic_helper_swap_state(). Doing this under the protection of all modeset |
e8c833a7 | 1312 | * locks means concurrent callers never see inconsistent state. And doing this |
286dbb8d ML |
1313 | * while it's guaranteed that no relevant nonblocking worker runs means that |
1314 | * nonblocking workers do not need grab any locks. Actually they must not grab | |
1315 | * locks, for otherwise the work flushing will deadlock. | |
e8c833a7 DV |
1316 | * |
1317 | * 4. Schedule a work item to do all subsequent steps, using the split-out | |
1318 | * commit helpers: a) pre-plane commit b) plane commit c) post-plane commit and | |
1319 | * then cleaning up the framebuffers after the old framebuffer is no longer | |
1320 | * being displayed. | |
9f2a7950 DV |
1321 | * |
1322 | * The above scheme is implemented in the atomic helper libraries in | |
1323 | * drm_atomic_helper_commit() using a bunch of helper functions. See | |
1324 | * drm_atomic_helper_setup_commit() for a starting point. | |
e8c833a7 DV |
1325 | */ |
1326 | ||
a095caa7 DV |
1327 | static int stall_checks(struct drm_crtc *crtc, bool nonblock) |
1328 | { | |
1329 | struct drm_crtc_commit *commit, *stall_commit = NULL; | |
1330 | bool completed = true; | |
1331 | int i; | |
1332 | long ret = 0; | |
1333 | ||
1334 | spin_lock(&crtc->commit_lock); | |
1335 | i = 0; | |
1336 | list_for_each_entry(commit, &crtc->commit_list, commit_entry) { | |
1337 | if (i == 0) { | |
1338 | completed = try_wait_for_completion(&commit->flip_done); | |
1339 | /* Userspace is not allowed to get ahead of the previous | |
1340 | * commit with nonblocking ones. */ | |
1341 | if (!completed && nonblock) { | |
1342 | spin_unlock(&crtc->commit_lock); | |
1343 | return -EBUSY; | |
1344 | } | |
1345 | } else if (i == 1) { | |
1346 | stall_commit = commit; | |
1347 | drm_crtc_commit_get(stall_commit); | |
a095caa7 | 1348 | break; |
723c3e55 | 1349 | } |
a095caa7 DV |
1350 | |
1351 | i++; | |
1352 | } | |
1353 | spin_unlock(&crtc->commit_lock); | |
1354 | ||
1355 | if (!stall_commit) | |
1356 | return 0; | |
1357 | ||
1358 | /* We don't want to let commits get ahead of cleanup work too much, | |
1359 | * stalling on 2nd previous commit means triple-buffer won't ever stall. | |
1360 | */ | |
723c3e55 | 1361 | ret = wait_for_completion_interruptible_timeout(&stall_commit->cleanup_done, |
a095caa7 DV |
1362 | 10*HZ); |
1363 | if (ret == 0) | |
1364 | DRM_ERROR("[CRTC:%d:%s] cleanup_done timed out\n", | |
1365 | crtc->base.id, crtc->name); | |
1366 | ||
1367 | drm_crtc_commit_put(stall_commit); | |
1368 | ||
1369 | return ret < 0 ? ret : 0; | |
1370 | } | |
1371 | ||
899cc5f1 | 1372 | static void release_crtc_commit(struct completion *completion) |
24835e44 DV |
1373 | { |
1374 | struct drm_crtc_commit *commit = container_of(completion, | |
1375 | typeof(*commit), | |
1376 | flip_done); | |
1377 | ||
1378 | drm_crtc_commit_put(commit); | |
1379 | } | |
1380 | ||
a095caa7 DV |
1381 | /** |
1382 | * drm_atomic_helper_setup_commit - setup possibly nonblocking commit | |
1383 | * @state: new modeset state to be committed | |
1384 | * @nonblock: whether nonblocking behavior is requested. | |
1385 | * | |
1386 | * This function prepares @state to be used by the atomic helper's support for | |
1387 | * nonblocking commits. Drivers using the nonblocking commit infrastructure | |
6806cdf9 DV |
1388 | * should always call this function from their |
1389 | * &drm_mode_config_funcs.atomic_commit hook. | |
a095caa7 DV |
1390 | * |
1391 | * To be able to use this support drivers need to use a few more helper | |
1392 | * functions. drm_atomic_helper_wait_for_dependencies() must be called before | |
1393 | * actually committing the hardware state, and for nonblocking commits this call | |
1394 | * must be placed in the async worker. See also drm_atomic_helper_swap_state() | |
1395 | * and it's stall parameter, for when a driver's commit hooks look at the | |
6806cdf9 | 1396 | * &drm_crtc.state, &drm_plane.state or &drm_connector.state pointer directly. |
a095caa7 DV |
1397 | * |
1398 | * Completion of the hardware commit step must be signalled using | |
1399 | * drm_atomic_helper_commit_hw_done(). After this step the driver is not allowed | |
1400 | * to read or change any permanent software or hardware modeset state. The only | |
1401 | * exception is state protected by other means than &drm_modeset_lock locks. | |
1402 | * Only the free standing @state with pointers to the old state structures can | |
1403 | * be inspected, e.g. to clean up old buffers using | |
1404 | * drm_atomic_helper_cleanup_planes(). | |
1405 | * | |
1406 | * At the very end, before cleaning up @state drivers must call | |
1407 | * drm_atomic_helper_commit_cleanup_done(). | |
1408 | * | |
1409 | * This is all implemented by in drm_atomic_helper_commit(), giving drivers a | |
1410 | * complete and esay-to-use default implementation of the atomic_commit() hook. | |
1411 | * | |
1412 | * The tracking of asynchronously executed and still pending commits is done | |
1413 | * using the core structure &drm_crtc_commit. | |
1414 | * | |
1415 | * By default there's no need to clean up resources allocated by this function | |
1416 | * explicitly: drm_atomic_state_default_clear() will take care of that | |
1417 | * automatically. | |
1418 | * | |
1419 | * Returns: | |
1420 | * | |
1421 | * 0 on success. -EBUSY when userspace schedules nonblocking commits too fast, | |
1422 | * -ENOMEM on allocation failures and -EINTR when a signal is pending. | |
1423 | */ | |
1424 | int drm_atomic_helper_setup_commit(struct drm_atomic_state *state, | |
1425 | bool nonblock) | |
1426 | { | |
1427 | struct drm_crtc *crtc; | |
415c3ac3 | 1428 | struct drm_crtc_state *old_crtc_state, *new_crtc_state; |
a095caa7 DV |
1429 | struct drm_crtc_commit *commit; |
1430 | int i, ret; | |
1431 | ||
415c3ac3 | 1432 | for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) { |
a095caa7 DV |
1433 | commit = kzalloc(sizeof(*commit), GFP_KERNEL); |
1434 | if (!commit) | |
1435 | return -ENOMEM; | |
1436 | ||
1437 | init_completion(&commit->flip_done); | |
1438 | init_completion(&commit->hw_done); | |
1439 | init_completion(&commit->cleanup_done); | |
1440 | INIT_LIST_HEAD(&commit->commit_entry); | |
1441 | kref_init(&commit->ref); | |
1442 | commit->crtc = crtc; | |
1443 | ||
1444 | state->crtcs[i].commit = commit; | |
1445 | ||
1446 | ret = stall_checks(crtc, nonblock); | |
1447 | if (ret) | |
1448 | return ret; | |
1449 | ||
1450 | /* Drivers only send out events when at least either current or | |
1451 | * new CRTC state is active. Complete right away if everything | |
1452 | * stays off. */ | |
415c3ac3 | 1453 | if (!old_crtc_state->active && !new_crtc_state->active) { |
a095caa7 DV |
1454 | complete_all(&commit->flip_done); |
1455 | continue; | |
1456 | } | |
1457 | ||
1458 | /* Legacy cursor updates are fully unsynced. */ | |
1459 | if (state->legacy_cursor_update) { | |
1460 | complete_all(&commit->flip_done); | |
1461 | continue; | |
1462 | } | |
1463 | ||
415c3ac3 | 1464 | if (!new_crtc_state->event) { |
a095caa7 DV |
1465 | commit->event = kzalloc(sizeof(*commit->event), |
1466 | GFP_KERNEL); | |
1467 | if (!commit->event) | |
1468 | return -ENOMEM; | |
1469 | ||
415c3ac3 | 1470 | new_crtc_state->event = commit->event; |
a095caa7 DV |
1471 | } |
1472 | ||
415c3ac3 ML |
1473 | new_crtc_state->event->base.completion = &commit->flip_done; |
1474 | new_crtc_state->event->base.completion_release = release_crtc_commit; | |
24835e44 | 1475 | drm_crtc_commit_get(commit); |
a095caa7 DV |
1476 | } |
1477 | ||
1478 | return 0; | |
1479 | } | |
1480 | EXPORT_SYMBOL(drm_atomic_helper_setup_commit); | |
1481 | ||
1482 | ||
1483 | static struct drm_crtc_commit *preceeding_commit(struct drm_crtc *crtc) | |
1484 | { | |
1485 | struct drm_crtc_commit *commit; | |
1486 | int i = 0; | |
1487 | ||
1488 | list_for_each_entry(commit, &crtc->commit_list, commit_entry) { | |
1489 | /* skip the first entry, that's the current commit */ | |
1490 | if (i == 1) | |
1491 | return commit; | |
1492 | i++; | |
1493 | } | |
1494 | ||
1495 | return NULL; | |
1496 | } | |
1497 | ||
1498 | /** | |
1499 | * drm_atomic_helper_wait_for_dependencies - wait for required preceeding commits | |
1ea0c02e | 1500 | * @old_state: atomic state object with old state structures |
a095caa7 DV |
1501 | * |
1502 | * This function waits for all preceeding commits that touch the same CRTC as | |
1ea0c02e | 1503 | * @old_state to both be committed to the hardware (as signalled by |
a095caa7 | 1504 | * drm_atomic_helper_commit_hw_done) and executed by the hardware (as signalled |
6806cdf9 | 1505 | * by calling drm_crtc_vblank_send_event() on the &drm_crtc_state.event). |
a095caa7 DV |
1506 | * |
1507 | * This is part of the atomic helper support for nonblocking commits, see | |
1508 | * drm_atomic_helper_setup_commit() for an overview. | |
1509 | */ | |
1ea0c02e | 1510 | void drm_atomic_helper_wait_for_dependencies(struct drm_atomic_state *old_state) |
a095caa7 DV |
1511 | { |
1512 | struct drm_crtc *crtc; | |
415c3ac3 | 1513 | struct drm_crtc_state *new_crtc_state; |
a095caa7 DV |
1514 | struct drm_crtc_commit *commit; |
1515 | int i; | |
1516 | long ret; | |
1517 | ||
415c3ac3 | 1518 | for_each_new_crtc_in_state(old_state, crtc, new_crtc_state, i) { |
a095caa7 DV |
1519 | spin_lock(&crtc->commit_lock); |
1520 | commit = preceeding_commit(crtc); | |
1521 | if (commit) | |
1522 | drm_crtc_commit_get(commit); | |
1523 | spin_unlock(&crtc->commit_lock); | |
1524 | ||
1525 | if (!commit) | |
1526 | continue; | |
1527 | ||
1528 | ret = wait_for_completion_timeout(&commit->hw_done, | |
1529 | 10*HZ); | |
1530 | if (ret == 0) | |
1531 | DRM_ERROR("[CRTC:%d:%s] hw_done timed out\n", | |
1532 | crtc->base.id, crtc->name); | |
1533 | ||
1534 | /* Currently no support for overwriting flips, hence | |
1535 | * stall for previous one to execute completely. */ | |
1536 | ret = wait_for_completion_timeout(&commit->flip_done, | |
1537 | 10*HZ); | |
1538 | if (ret == 0) | |
1539 | DRM_ERROR("[CRTC:%d:%s] flip_done timed out\n", | |
1540 | crtc->base.id, crtc->name); | |
1541 | ||
1542 | drm_crtc_commit_put(commit); | |
1543 | } | |
1544 | } | |
1545 | EXPORT_SYMBOL(drm_atomic_helper_wait_for_dependencies); | |
1546 | ||
1547 | /** | |
1548 | * drm_atomic_helper_commit_hw_done - setup possible nonblocking commit | |
1ea0c02e | 1549 | * @old_state: atomic state object with old state structures |
a095caa7 DV |
1550 | * |
1551 | * This function is used to signal completion of the hardware commit step. After | |
1552 | * this step the driver is not allowed to read or change any permanent software | |
1553 | * or hardware modeset state. The only exception is state protected by other | |
1554 | * means than &drm_modeset_lock locks. | |
1555 | * | |
1556 | * Drivers should try to postpone any expensive or delayed cleanup work after | |
1557 | * this function is called. | |
1558 | * | |
1559 | * This is part of the atomic helper support for nonblocking commits, see | |
1560 | * drm_atomic_helper_setup_commit() for an overview. | |
1561 | */ | |
1ea0c02e | 1562 | void drm_atomic_helper_commit_hw_done(struct drm_atomic_state *old_state) |
a095caa7 DV |
1563 | { |
1564 | struct drm_crtc *crtc; | |
415c3ac3 | 1565 | struct drm_crtc_state *new_crtc_state; |
a095caa7 DV |
1566 | struct drm_crtc_commit *commit; |
1567 | int i; | |
1568 | ||
415c3ac3 | 1569 | for_each_new_crtc_in_state(old_state, crtc, new_crtc_state, i) { |
1ea0c02e | 1570 | commit = old_state->crtcs[i].commit; |
a095caa7 DV |
1571 | if (!commit) |
1572 | continue; | |
1573 | ||
1574 | /* backend must have consumed any event by now */ | |
415c3ac3 | 1575 | WARN_ON(new_crtc_state->event); |
a095caa7 DV |
1576 | spin_lock(&crtc->commit_lock); |
1577 | complete_all(&commit->hw_done); | |
1578 | spin_unlock(&crtc->commit_lock); | |
1579 | } | |
1580 | } | |
1581 | EXPORT_SYMBOL(drm_atomic_helper_commit_hw_done); | |
1582 | ||
1583 | /** | |
1584 | * drm_atomic_helper_commit_cleanup_done - signal completion of commit | |
1ea0c02e | 1585 | * @old_state: atomic state object with old state structures |
a095caa7 | 1586 | * |
1ea0c02e DV |
1587 | * This signals completion of the atomic update @old_state, including any |
1588 | * cleanup work. If used, it must be called right before calling | |
0853695c | 1589 | * drm_atomic_state_put(). |
a095caa7 DV |
1590 | * |
1591 | * This is part of the atomic helper support for nonblocking commits, see | |
1592 | * drm_atomic_helper_setup_commit() for an overview. | |
1593 | */ | |
1ea0c02e | 1594 | void drm_atomic_helper_commit_cleanup_done(struct drm_atomic_state *old_state) |
a095caa7 DV |
1595 | { |
1596 | struct drm_crtc *crtc; | |
415c3ac3 | 1597 | struct drm_crtc_state *new_crtc_state; |
a095caa7 DV |
1598 | struct drm_crtc_commit *commit; |
1599 | int i; | |
1600 | long ret; | |
1601 | ||
415c3ac3 | 1602 | for_each_new_crtc_in_state(old_state, crtc, new_crtc_state, i) { |
1ea0c02e | 1603 | commit = old_state->crtcs[i].commit; |
a095caa7 DV |
1604 | if (WARN_ON(!commit)) |
1605 | continue; | |
1606 | ||
1607 | spin_lock(&crtc->commit_lock); | |
1608 | complete_all(&commit->cleanup_done); | |
1609 | WARN_ON(!try_wait_for_completion(&commit->hw_done)); | |
1610 | ||
1611 | /* commit_list borrows our reference, need to remove before we | |
1612 | * clean up our drm_atomic_state. But only after it actually | |
1613 | * completed, otherwise subsequent commits won't stall properly. */ | |
7deef7f1 DV |
1614 | if (try_wait_for_completion(&commit->flip_done)) |
1615 | goto del_commit; | |
a095caa7 DV |
1616 | |
1617 | spin_unlock(&crtc->commit_lock); | |
1618 | ||
1619 | /* We must wait for the vblank event to signal our completion | |
1620 | * before releasing our reference, since the vblank work does | |
1621 | * not hold a reference of its own. */ | |
1622 | ret = wait_for_completion_timeout(&commit->flip_done, | |
1623 | 10*HZ); | |
1624 | if (ret == 0) | |
1625 | DRM_ERROR("[CRTC:%d:%s] flip_done timed out\n", | |
1626 | crtc->base.id, crtc->name); | |
1627 | ||
1628 | spin_lock(&crtc->commit_lock); | |
7deef7f1 | 1629 | del_commit: |
a095caa7 DV |
1630 | list_del(&commit->commit_entry); |
1631 | spin_unlock(&crtc->commit_lock); | |
1632 | } | |
1633 | } | |
1634 | EXPORT_SYMBOL(drm_atomic_helper_commit_cleanup_done); | |
1635 | ||
c2fcd274 | 1636 | /** |
2e3afd47 | 1637 | * drm_atomic_helper_prepare_planes - prepare plane resources before commit |
c2fcd274 | 1638 | * @dev: DRM device |
2e3afd47 | 1639 | * @state: atomic state object with new state structures |
c2fcd274 DV |
1640 | * |
1641 | * This function prepares plane state, specifically framebuffers, for the new | |
6806cdf9 DV |
1642 | * configuration, by calling &drm_plane_helper_funcs.prepare_fb. If any failure |
1643 | * is encountered this function will call &drm_plane_helper_funcs.cleanup_fb on | |
1644 | * any already successfully prepared framebuffer. | |
c2fcd274 DV |
1645 | * |
1646 | * Returns: | |
1647 | * 0 on success, negative error code on failure. | |
1648 | */ | |
1649 | int drm_atomic_helper_prepare_planes(struct drm_device *dev, | |
1650 | struct drm_atomic_state *state) | |
1651 | { | |
be9174a4 | 1652 | struct drm_plane *plane; |
415c3ac3 | 1653 | struct drm_plane_state *new_plane_state; |
be9174a4 | 1654 | int ret, i, j; |
c2fcd274 | 1655 | |
415c3ac3 | 1656 | for_each_new_plane_in_state(state, plane, new_plane_state, i) { |
b5ceff20 | 1657 | const struct drm_plane_helper_funcs *funcs; |
c2fcd274 DV |
1658 | |
1659 | funcs = plane->helper_private; | |
1660 | ||
844f9111 | 1661 | if (funcs->prepare_fb) { |
415c3ac3 | 1662 | ret = funcs->prepare_fb(plane, new_plane_state); |
c2fcd274 DV |
1663 | if (ret) |
1664 | goto fail; | |
1665 | } | |
1666 | } | |
1667 | ||
1668 | return 0; | |
1669 | ||
1670 | fail: | |
415c3ac3 | 1671 | for_each_new_plane_in_state(state, plane, new_plane_state, j) { |
b5ceff20 | 1672 | const struct drm_plane_helper_funcs *funcs; |
c2fcd274 | 1673 | |
be9174a4 | 1674 | if (j >= i) |
c2fcd274 DV |
1675 | continue; |
1676 | ||
1677 | funcs = plane->helper_private; | |
1678 | ||
844f9111 | 1679 | if (funcs->cleanup_fb) |
415c3ac3 | 1680 | funcs->cleanup_fb(plane, new_plane_state); |
c2fcd274 DV |
1681 | } |
1682 | ||
1683 | return ret; | |
1684 | } | |
1685 | EXPORT_SYMBOL(drm_atomic_helper_prepare_planes); | |
1686 | ||
7135ac54 | 1687 | static bool plane_crtc_active(const struct drm_plane_state *state) |
aef9dbb8 DV |
1688 | { |
1689 | return state->crtc && state->crtc->state->active; | |
1690 | } | |
1691 | ||
c2fcd274 DV |
1692 | /** |
1693 | * drm_atomic_helper_commit_planes - commit plane state | |
1694 | * @dev: DRM device | |
b0fcfc89 | 1695 | * @old_state: atomic state object with old state structures |
2b58e98d | 1696 | * @flags: flags for committing plane state |
c2fcd274 DV |
1697 | * |
1698 | * This function commits the new plane state using the plane and atomic helper | |
1699 | * functions for planes and crtcs. It assumes that the atomic state has already | |
1700 | * been pushed into the relevant object state pointers, since this step can no | |
1701 | * longer fail. | |
1702 | * | |
b0fcfc89 | 1703 | * It still requires the global state object @old_state to know which planes and |
c2fcd274 | 1704 | * crtcs need to be updated though. |
de28d021 ML |
1705 | * |
1706 | * Note that this function does all plane updates across all CRTCs in one step. | |
1707 | * If the hardware can't support this approach look at | |
1708 | * drm_atomic_helper_commit_planes_on_crtc() instead. | |
6e48ae32 DV |
1709 | * |
1710 | * Plane parameters can be updated by applications while the associated CRTC is | |
1711 | * disabled. The DRM/KMS core will store the parameters in the plane state, | |
1712 | * which will be available to the driver when the CRTC is turned on. As a result | |
1713 | * most drivers don't need to be immediately notified of plane updates for a | |
1714 | * disabled CRTC. | |
1715 | * | |
2b58e98d LY |
1716 | * Unless otherwise needed, drivers are advised to set the ACTIVE_ONLY flag in |
1717 | * @flags in order not to receive plane update notifications related to a | |
1718 | * disabled CRTC. This avoids the need to manually ignore plane updates in | |
6e48ae32 DV |
1719 | * driver code when the driver and/or hardware can't or just don't need to deal |
1720 | * with updates on disabled CRTCs, for example when supporting runtime PM. | |
1721 | * | |
2b58e98d LY |
1722 | * Drivers may set the NO_DISABLE_AFTER_MODESET flag in @flags if the relevant |
1723 | * display controllers require to disable a CRTC's planes when the CRTC is | |
6806cdf9 DV |
1724 | * disabled. This function would skip the &drm_plane_helper_funcs.atomic_disable |
1725 | * call for a plane if the CRTC of the old plane state needs a modesetting | |
1726 | * operation. Of course, the drivers need to disable the planes in their CRTC | |
1727 | * disable callbacks since no one else would do that. | |
2b58e98d LY |
1728 | * |
1729 | * The drm_atomic_helper_commit() default implementation doesn't set the | |
1730 | * ACTIVE_ONLY flag to most closely match the behaviour of the legacy helpers. | |
1731 | * This should not be copied blindly by drivers. | |
c2fcd274 DV |
1732 | */ |
1733 | void drm_atomic_helper_commit_planes(struct drm_device *dev, | |
aef9dbb8 | 1734 | struct drm_atomic_state *old_state, |
2b58e98d | 1735 | uint32_t flags) |
c2fcd274 | 1736 | { |
df63b999 | 1737 | struct drm_crtc *crtc; |
415c3ac3 | 1738 | struct drm_crtc_state *old_crtc_state, *new_crtc_state; |
df63b999 | 1739 | struct drm_plane *plane; |
415c3ac3 | 1740 | struct drm_plane_state *old_plane_state, *new_plane_state; |
c2fcd274 | 1741 | int i; |
2b58e98d LY |
1742 | bool active_only = flags & DRM_PLANE_COMMIT_ACTIVE_ONLY; |
1743 | bool no_disable = flags & DRM_PLANE_COMMIT_NO_DISABLE_AFTER_MODESET; | |
c2fcd274 | 1744 | |
415c3ac3 | 1745 | for_each_oldnew_crtc_in_state(old_state, crtc, old_crtc_state, new_crtc_state, i) { |
b5ceff20 | 1746 | const struct drm_crtc_helper_funcs *funcs; |
c2fcd274 DV |
1747 | |
1748 | funcs = crtc->helper_private; | |
1749 | ||
1750 | if (!funcs || !funcs->atomic_begin) | |
1751 | continue; | |
1752 | ||
415c3ac3 | 1753 | if (active_only && !new_crtc_state->active) |
aef9dbb8 DV |
1754 | continue; |
1755 | ||
613d2b27 | 1756 | funcs->atomic_begin(crtc, old_crtc_state); |
c2fcd274 DV |
1757 | } |
1758 | ||
415c3ac3 | 1759 | for_each_oldnew_plane_in_state(old_state, plane, old_plane_state, new_plane_state, i) { |
b5ceff20 | 1760 | const struct drm_plane_helper_funcs *funcs; |
216c59d6 | 1761 | bool disabling; |
c2fcd274 DV |
1762 | |
1763 | funcs = plane->helper_private; | |
1764 | ||
3cad4b68 | 1765 | if (!funcs) |
c2fcd274 DV |
1766 | continue; |
1767 | ||
51ffa12d ML |
1768 | disabling = drm_atomic_plane_disabling(old_plane_state, |
1769 | new_plane_state); | |
216c59d6 LP |
1770 | |
1771 | if (active_only) { | |
1772 | /* | |
1773 | * Skip planes related to inactive CRTCs. If the plane | |
1774 | * is enabled use the state of the current CRTC. If the | |
1775 | * plane is being disabled use the state of the old | |
1776 | * CRTC to avoid skipping planes being disabled on an | |
1777 | * active CRTC. | |
1778 | */ | |
415c3ac3 | 1779 | if (!disabling && !plane_crtc_active(new_plane_state)) |
216c59d6 LP |
1780 | continue; |
1781 | if (disabling && !plane_crtc_active(old_plane_state)) | |
1782 | continue; | |
1783 | } | |
aef9dbb8 | 1784 | |
407b8bd9 TR |
1785 | /* |
1786 | * Special-case disabling the plane if drivers support it. | |
1787 | */ | |
2b58e98d LY |
1788 | if (disabling && funcs->atomic_disable) { |
1789 | struct drm_crtc_state *crtc_state; | |
1790 | ||
1791 | crtc_state = old_plane_state->crtc->state; | |
1792 | ||
1793 | if (drm_atomic_crtc_needs_modeset(crtc_state) && | |
1794 | no_disable) | |
1795 | continue; | |
1796 | ||
407b8bd9 | 1797 | funcs->atomic_disable(plane, old_plane_state); |
415c3ac3 | 1798 | } else if (new_plane_state->crtc || disabling) { |
407b8bd9 | 1799 | funcs->atomic_update(plane, old_plane_state); |
2b58e98d | 1800 | } |
c2fcd274 DV |
1801 | } |
1802 | ||
415c3ac3 | 1803 | for_each_oldnew_crtc_in_state(old_state, crtc, old_crtc_state, new_crtc_state, i) { |
b5ceff20 | 1804 | const struct drm_crtc_helper_funcs *funcs; |
c2fcd274 DV |
1805 | |
1806 | funcs = crtc->helper_private; | |
1807 | ||
1808 | if (!funcs || !funcs->atomic_flush) | |
1809 | continue; | |
1810 | ||
415c3ac3 | 1811 | if (active_only && !new_crtc_state->active) |
aef9dbb8 DV |
1812 | continue; |
1813 | ||
613d2b27 | 1814 | funcs->atomic_flush(crtc, old_crtc_state); |
c2fcd274 DV |
1815 | } |
1816 | } | |
1817 | EXPORT_SYMBOL(drm_atomic_helper_commit_planes); | |
1818 | ||
de28d021 ML |
1819 | /** |
1820 | * drm_atomic_helper_commit_planes_on_crtc - commit plane state for a crtc | |
1821 | * @old_crtc_state: atomic state object with the old crtc state | |
1822 | * | |
1823 | * This function commits the new plane state using the plane and atomic helper | |
1824 | * functions for planes on the specific crtc. It assumes that the atomic state | |
1825 | * has already been pushed into the relevant object state pointers, since this | |
1826 | * step can no longer fail. | |
1827 | * | |
1828 | * This function is useful when plane updates should be done crtc-by-crtc | |
1829 | * instead of one global step like drm_atomic_helper_commit_planes() does. | |
1830 | * | |
1831 | * This function can only be savely used when planes are not allowed to move | |
1832 | * between different CRTCs because this function doesn't handle inter-CRTC | |
1833 | * depencies. Callers need to ensure that either no such depencies exist, | |
1834 | * resolve them through ordering of commit calls or through some other means. | |
1835 | */ | |
1836 | void | |
1837 | drm_atomic_helper_commit_planes_on_crtc(struct drm_crtc_state *old_crtc_state) | |
1838 | { | |
1839 | const struct drm_crtc_helper_funcs *crtc_funcs; | |
1840 | struct drm_crtc *crtc = old_crtc_state->crtc; | |
1841 | struct drm_atomic_state *old_state = old_crtc_state->state; | |
1842 | struct drm_plane *plane; | |
1843 | unsigned plane_mask; | |
1844 | ||
1845 | plane_mask = old_crtc_state->plane_mask; | |
1846 | plane_mask |= crtc->state->plane_mask; | |
1847 | ||
1848 | crtc_funcs = crtc->helper_private; | |
1849 | if (crtc_funcs && crtc_funcs->atomic_begin) | |
613d2b27 | 1850 | crtc_funcs->atomic_begin(crtc, old_crtc_state); |
de28d021 ML |
1851 | |
1852 | drm_for_each_plane_mask(plane, crtc->dev, plane_mask) { | |
1853 | struct drm_plane_state *old_plane_state = | |
b4d93679 | 1854 | drm_atomic_get_old_plane_state(old_state, plane); |
de28d021 ML |
1855 | const struct drm_plane_helper_funcs *plane_funcs; |
1856 | ||
1857 | plane_funcs = plane->helper_private; | |
1858 | ||
1859 | if (!old_plane_state || !plane_funcs) | |
1860 | continue; | |
1861 | ||
1862 | WARN_ON(plane->state->crtc && plane->state->crtc != crtc); | |
1863 | ||
51ffa12d | 1864 | if (drm_atomic_plane_disabling(old_plane_state, plane->state) && |
de28d021 ML |
1865 | plane_funcs->atomic_disable) |
1866 | plane_funcs->atomic_disable(plane, old_plane_state); | |
1867 | else if (plane->state->crtc || | |
51ffa12d | 1868 | drm_atomic_plane_disabling(old_plane_state, plane->state)) |
de28d021 ML |
1869 | plane_funcs->atomic_update(plane, old_plane_state); |
1870 | } | |
1871 | ||
1872 | if (crtc_funcs && crtc_funcs->atomic_flush) | |
613d2b27 | 1873 | crtc_funcs->atomic_flush(crtc, old_crtc_state); |
de28d021 ML |
1874 | } |
1875 | EXPORT_SYMBOL(drm_atomic_helper_commit_planes_on_crtc); | |
1876 | ||
6753ba97 JS |
1877 | /** |
1878 | * drm_atomic_helper_disable_planes_on_crtc - helper to disable CRTC's planes | |
28500291 | 1879 | * @old_crtc_state: atomic state object with the old CRTC state |
6753ba97 JS |
1880 | * @atomic: if set, synchronize with CRTC's atomic_begin/flush hooks |
1881 | * | |
1882 | * Disables all planes associated with the given CRTC. This can be | |
28500291 LY |
1883 | * used for instance in the CRTC helper atomic_disable callback to disable |
1884 | * all planes. | |
6753ba97 JS |
1885 | * |
1886 | * If the atomic-parameter is set the function calls the CRTC's | |
1887 | * atomic_begin hook before and atomic_flush hook after disabling the | |
1888 | * planes. | |
1889 | * | |
1890 | * It is a bug to call this function without having implemented the | |
6806cdf9 | 1891 | * &drm_plane_helper_funcs.atomic_disable plane hook. |
6753ba97 | 1892 | */ |
28500291 LY |
1893 | void |
1894 | drm_atomic_helper_disable_planes_on_crtc(struct drm_crtc_state *old_crtc_state, | |
1895 | bool atomic) | |
6753ba97 | 1896 | { |
28500291 | 1897 | struct drm_crtc *crtc = old_crtc_state->crtc; |
6753ba97 JS |
1898 | const struct drm_crtc_helper_funcs *crtc_funcs = |
1899 | crtc->helper_private; | |
1900 | struct drm_plane *plane; | |
1901 | ||
1902 | if (atomic && crtc_funcs && crtc_funcs->atomic_begin) | |
1903 | crtc_funcs->atomic_begin(crtc, NULL); | |
1904 | ||
28500291 | 1905 | drm_atomic_crtc_state_for_each_plane(plane, old_crtc_state) { |
6753ba97 JS |
1906 | const struct drm_plane_helper_funcs *plane_funcs = |
1907 | plane->helper_private; | |
1908 | ||
28500291 | 1909 | if (!plane_funcs) |
6753ba97 JS |
1910 | continue; |
1911 | ||
1912 | WARN_ON(!plane_funcs->atomic_disable); | |
1913 | if (plane_funcs->atomic_disable) | |
1914 | plane_funcs->atomic_disable(plane, NULL); | |
1915 | } | |
1916 | ||
1917 | if (atomic && crtc_funcs && crtc_funcs->atomic_flush) | |
1918 | crtc_funcs->atomic_flush(crtc, NULL); | |
1919 | } | |
1920 | EXPORT_SYMBOL(drm_atomic_helper_disable_planes_on_crtc); | |
1921 | ||
c2fcd274 DV |
1922 | /** |
1923 | * drm_atomic_helper_cleanup_planes - cleanup plane resources after commit | |
1924 | * @dev: DRM device | |
1925 | * @old_state: atomic state object with old state structures | |
1926 | * | |
1927 | * This function cleans up plane state, specifically framebuffers, from the old | |
1928 | * configuration. Hence the old configuration must be perserved in @old_state to | |
1929 | * be able to call this function. | |
1930 | * | |
1931 | * This function must also be called on the new state when the atomic update | |
1932 | * fails at any point after calling drm_atomic_helper_prepare_planes(). | |
1933 | */ | |
1934 | void drm_atomic_helper_cleanup_planes(struct drm_device *dev, | |
1935 | struct drm_atomic_state *old_state) | |
1936 | { | |
df63b999 | 1937 | struct drm_plane *plane; |
415c3ac3 | 1938 | struct drm_plane_state *old_plane_state, *new_plane_state; |
c2fcd274 DV |
1939 | int i; |
1940 | ||
415c3ac3 | 1941 | for_each_oldnew_plane_in_state(old_state, plane, old_plane_state, new_plane_state, i) { |
b5ceff20 | 1942 | const struct drm_plane_helper_funcs *funcs; |
415c3ac3 ML |
1943 | struct drm_plane_state *plane_state; |
1944 | ||
1945 | /* | |
1946 | * This might be called before swapping when commit is aborted, | |
1947 | * in which case we have to cleanup the new state. | |
1948 | */ | |
1949 | if (old_plane_state == plane->state) | |
1950 | plane_state = new_plane_state; | |
1951 | else | |
1952 | plane_state = old_plane_state; | |
c2fcd274 | 1953 | |
c2fcd274 DV |
1954 | funcs = plane->helper_private; |
1955 | ||
844f9111 ML |
1956 | if (funcs->cleanup_fb) |
1957 | funcs->cleanup_fb(plane, plane_state); | |
c2fcd274 DV |
1958 | } |
1959 | } | |
1960 | EXPORT_SYMBOL(drm_atomic_helper_cleanup_planes); | |
1961 | ||
1962 | /** | |
1963 | * drm_atomic_helper_swap_state - store atomic state into current sw state | |
c2fcd274 | 1964 | * @state: atomic state |
5e84c269 | 1965 | * @stall: stall for proceeding commits |
c2fcd274 DV |
1966 | * |
1967 | * This function stores the atomic state into the current state pointers in all | |
1968 | * driver objects. It should be called after all failing steps have been done | |
1969 | * and succeeded, but before the actual hardware state is committed. | |
1970 | * | |
1971 | * For cleanup and error recovery the current state for all changed objects will | |
1972 | * be swaped into @state. | |
1973 | * | |
1974 | * With that sequence it fits perfectly into the plane prepare/cleanup sequence: | |
1975 | * | |
1976 | * 1. Call drm_atomic_helper_prepare_planes() with the staged atomic state. | |
1977 | * | |
1978 | * 2. Do any other steps that might fail. | |
1979 | * | |
1980 | * 3. Put the staged state into the current state pointers with this function. | |
1981 | * | |
1982 | * 4. Actually commit the hardware state. | |
1983 | * | |
26196f7e | 1984 | * 5. Call drm_atomic_helper_cleanup_planes() with @state, which since step 3 |
c2fcd274 | 1985 | * contains the old state. Also do any other cleanup required with that state. |
a095caa7 DV |
1986 | * |
1987 | * @stall must be set when nonblocking commits for this driver directly access | |
6806cdf9 DV |
1988 | * the &drm_plane.state, &drm_crtc.state or &drm_connector.state pointer. With |
1989 | * the current atomic helpers this is almost always the case, since the helpers | |
a095caa7 | 1990 | * don't pass the right state structures to the callbacks. |
c2fcd274 | 1991 | */ |
5e84c269 DV |
1992 | void drm_atomic_helper_swap_state(struct drm_atomic_state *state, |
1993 | bool stall) | |
c2fcd274 DV |
1994 | { |
1995 | int i; | |
a095caa7 | 1996 | long ret; |
be9174a4 | 1997 | struct drm_connector *connector; |
415c3ac3 | 1998 | struct drm_connector_state *old_conn_state, *new_conn_state; |
be9174a4 | 1999 | struct drm_crtc *crtc; |
415c3ac3 | 2000 | struct drm_crtc_state *old_crtc_state, *new_crtc_state; |
be9174a4 | 2001 | struct drm_plane *plane; |
415c3ac3 | 2002 | struct drm_plane_state *old_plane_state, *new_plane_state; |
a095caa7 DV |
2003 | struct drm_crtc_commit *commit; |
2004 | ||
2005 | if (stall) { | |
415c3ac3 | 2006 | for_each_new_crtc_in_state(state, crtc, new_crtc_state, i) { |
a095caa7 DV |
2007 | spin_lock(&crtc->commit_lock); |
2008 | commit = list_first_entry_or_null(&crtc->commit_list, | |
2009 | struct drm_crtc_commit, commit_entry); | |
2010 | if (commit) | |
2011 | drm_crtc_commit_get(commit); | |
2012 | spin_unlock(&crtc->commit_lock); | |
2013 | ||
2014 | if (!commit) | |
2015 | continue; | |
2016 | ||
2017 | ret = wait_for_completion_timeout(&commit->hw_done, | |
2018 | 10*HZ); | |
2019 | if (ret == 0) | |
2020 | DRM_ERROR("[CRTC:%d:%s] hw_done timed out\n", | |
2021 | crtc->base.id, crtc->name); | |
2022 | drm_crtc_commit_put(commit); | |
2023 | } | |
2024 | } | |
c2fcd274 | 2025 | |
415c3ac3 | 2026 | for_each_oldnew_connector_in_state(state, connector, old_conn_state, new_conn_state, i) { |
581e49fe ML |
2027 | WARN_ON(connector->state != old_conn_state); |
2028 | ||
415c3ac3 ML |
2029 | old_conn_state->state = state; |
2030 | new_conn_state->state = NULL; | |
2031 | ||
2032 | state->connectors[i].state = old_conn_state; | |
2033 | connector->state = new_conn_state; | |
c2fcd274 DV |
2034 | } |
2035 | ||
415c3ac3 | 2036 | for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) { |
581e49fe ML |
2037 | WARN_ON(crtc->state != old_crtc_state); |
2038 | ||
415c3ac3 ML |
2039 | old_crtc_state->state = state; |
2040 | new_crtc_state->state = NULL; | |
2041 | ||
2042 | state->crtcs[i].state = old_crtc_state; | |
2043 | crtc->state = new_crtc_state; | |
a095caa7 DV |
2044 | |
2045 | if (state->crtcs[i].commit) { | |
2046 | spin_lock(&crtc->commit_lock); | |
2047 | list_add(&state->crtcs[i].commit->commit_entry, | |
2048 | &crtc->commit_list); | |
2049 | spin_unlock(&crtc->commit_lock); | |
2050 | ||
2051 | state->crtcs[i].commit->event = NULL; | |
2052 | } | |
c2fcd274 DV |
2053 | } |
2054 | ||
415c3ac3 | 2055 | for_each_oldnew_plane_in_state(state, plane, old_plane_state, new_plane_state, i) { |
581e49fe ML |
2056 | WARN_ON(plane->state != old_plane_state); |
2057 | ||
415c3ac3 ML |
2058 | old_plane_state->state = state; |
2059 | new_plane_state->state = NULL; | |
2060 | ||
2061 | state->planes[i].state = old_plane_state; | |
2062 | plane->state = new_plane_state; | |
c2fcd274 DV |
2063 | } |
2064 | } | |
2065 | EXPORT_SYMBOL(drm_atomic_helper_swap_state); | |
042652ed DV |
2066 | |
2067 | /** | |
2068 | * drm_atomic_helper_update_plane - Helper for primary plane update using atomic | |
2069 | * @plane: plane object to update | |
2070 | * @crtc: owning CRTC of owning plane | |
2071 | * @fb: framebuffer to flip onto plane | |
2072 | * @crtc_x: x offset of primary plane on crtc | |
2073 | * @crtc_y: y offset of primary plane on crtc | |
2074 | * @crtc_w: width of primary plane rectangle on crtc | |
2075 | * @crtc_h: height of primary plane rectangle on crtc | |
2076 | * @src_x: x offset of @fb for panning | |
2077 | * @src_y: y offset of @fb for panning | |
2078 | * @src_w: width of source rectangle in @fb | |
2079 | * @src_h: height of source rectangle in @fb | |
34a2ab5e | 2080 | * @ctx: lock acquire context |
042652ed DV |
2081 | * |
2082 | * Provides a default plane update handler using the atomic driver interface. | |
2083 | * | |
2084 | * RETURNS: | |
2085 | * Zero on success, error code on failure | |
2086 | */ | |
2087 | int drm_atomic_helper_update_plane(struct drm_plane *plane, | |
2088 | struct drm_crtc *crtc, | |
2089 | struct drm_framebuffer *fb, | |
2090 | int crtc_x, int crtc_y, | |
2091 | unsigned int crtc_w, unsigned int crtc_h, | |
2092 | uint32_t src_x, uint32_t src_y, | |
34a2ab5e DV |
2093 | uint32_t src_w, uint32_t src_h, |
2094 | struct drm_modeset_acquire_ctx *ctx) | |
042652ed DV |
2095 | { |
2096 | struct drm_atomic_state *state; | |
2097 | struct drm_plane_state *plane_state; | |
2098 | int ret = 0; | |
2099 | ||
2100 | state = drm_atomic_state_alloc(plane->dev); | |
2101 | if (!state) | |
2102 | return -ENOMEM; | |
2103 | ||
d26f96c7 | 2104 | state->acquire_ctx = ctx; |
042652ed DV |
2105 | plane_state = drm_atomic_get_plane_state(state, plane); |
2106 | if (IS_ERR(plane_state)) { | |
2107 | ret = PTR_ERR(plane_state); | |
2108 | goto fail; | |
2109 | } | |
2110 | ||
07cc0ef6 | 2111 | ret = drm_atomic_set_crtc_for_plane(plane_state, crtc); |
042652ed DV |
2112 | if (ret != 0) |
2113 | goto fail; | |
321ebf04 | 2114 | drm_atomic_set_fb_for_plane(plane_state, fb); |
042652ed DV |
2115 | plane_state->crtc_x = crtc_x; |
2116 | plane_state->crtc_y = crtc_y; | |
042652ed | 2117 | plane_state->crtc_w = crtc_w; |
02e6f379 | 2118 | plane_state->crtc_h = crtc_h; |
042652ed DV |
2119 | plane_state->src_x = src_x; |
2120 | plane_state->src_y = src_y; | |
042652ed | 2121 | plane_state->src_w = src_w; |
02e6f379 | 2122 | plane_state->src_h = src_h; |
042652ed | 2123 | |
3671c580 DV |
2124 | if (plane == crtc->cursor) |
2125 | state->legacy_cursor_update = true; | |
2126 | ||
042652ed | 2127 | ret = drm_atomic_commit(state); |
042652ed | 2128 | fail: |
0853695c | 2129 | drm_atomic_state_put(state); |
042652ed | 2130 | return ret; |
042652ed DV |
2131 | } |
2132 | EXPORT_SYMBOL(drm_atomic_helper_update_plane); | |
2133 | ||
2134 | /** | |
2135 | * drm_atomic_helper_disable_plane - Helper for primary plane disable using * atomic | |
2136 | * @plane: plane to disable | |
19315294 | 2137 | * @ctx: lock acquire context |
042652ed DV |
2138 | * |
2139 | * Provides a default plane disable handler using the atomic driver interface. | |
2140 | * | |
2141 | * RETURNS: | |
2142 | * Zero on success, error code on failure | |
2143 | */ | |
19315294 DV |
2144 | int drm_atomic_helper_disable_plane(struct drm_plane *plane, |
2145 | struct drm_modeset_acquire_ctx *ctx) | |
042652ed DV |
2146 | { |
2147 | struct drm_atomic_state *state; | |
2148 | struct drm_plane_state *plane_state; | |
2149 | int ret = 0; | |
2150 | ||
2151 | state = drm_atomic_state_alloc(plane->dev); | |
2152 | if (!state) | |
2153 | return -ENOMEM; | |
2154 | ||
d26f96c7 | 2155 | state->acquire_ctx = ctx; |
042652ed DV |
2156 | plane_state = drm_atomic_get_plane_state(state, plane); |
2157 | if (IS_ERR(plane_state)) { | |
2158 | ret = PTR_ERR(plane_state); | |
2159 | goto fail; | |
2160 | } | |
2161 | ||
24e79d0d ML |
2162 | if (plane_state->crtc && (plane == plane->crtc->cursor)) |
2163 | plane_state->state->legacy_cursor_update = true; | |
2164 | ||
bbb1e524 | 2165 | ret = __drm_atomic_helper_disable_plane(plane, plane_state); |
042652ed DV |
2166 | if (ret != 0) |
2167 | goto fail; | |
f02ad907 | 2168 | |
042652ed | 2169 | ret = drm_atomic_commit(state); |
042652ed | 2170 | fail: |
0853695c | 2171 | drm_atomic_state_put(state); |
042652ed | 2172 | return ret; |
042652ed DV |
2173 | } |
2174 | EXPORT_SYMBOL(drm_atomic_helper_disable_plane); | |
2175 | ||
bbb1e524 RC |
2176 | /* just used from fb-helper and atomic-helper: */ |
2177 | int __drm_atomic_helper_disable_plane(struct drm_plane *plane, | |
2178 | struct drm_plane_state *plane_state) | |
2179 | { | |
2180 | int ret; | |
2181 | ||
2182 | ret = drm_atomic_set_crtc_for_plane(plane_state, NULL); | |
2183 | if (ret != 0) | |
2184 | return ret; | |
2185 | ||
2186 | drm_atomic_set_fb_for_plane(plane_state, NULL); | |
2187 | plane_state->crtc_x = 0; | |
2188 | plane_state->crtc_y = 0; | |
bbb1e524 | 2189 | plane_state->crtc_w = 0; |
02e6f379 | 2190 | plane_state->crtc_h = 0; |
bbb1e524 RC |
2191 | plane_state->src_x = 0; |
2192 | plane_state->src_y = 0; | |
bbb1e524 | 2193 | plane_state->src_w = 0; |
02e6f379 | 2194 | plane_state->src_h = 0; |
bbb1e524 | 2195 | |
bbb1e524 RC |
2196 | return 0; |
2197 | } | |
2198 | ||
042652ed DV |
2199 | static int update_output_state(struct drm_atomic_state *state, |
2200 | struct drm_mode_set *set) | |
2201 | { | |
2202 | struct drm_device *dev = set->crtc->dev; | |
df63b999 | 2203 | struct drm_crtc *crtc; |
415c3ac3 | 2204 | struct drm_crtc_state *new_crtc_state; |
df63b999 | 2205 | struct drm_connector *connector; |
415c3ac3 | 2206 | struct drm_connector_state *new_conn_state; |
6ab520a2 | 2207 | int ret, i; |
042652ed DV |
2208 | |
2209 | ret = drm_modeset_lock(&dev->mode_config.connection_mutex, | |
2210 | state->acquire_ctx); | |
2211 | if (ret) | |
2212 | return ret; | |
2213 | ||
6ab520a2 ML |
2214 | /* First disable all connectors on the target crtc. */ |
2215 | ret = drm_atomic_add_affected_connectors(state, set->crtc); | |
2216 | if (ret) | |
2217 | return ret; | |
042652ed | 2218 | |
415c3ac3 ML |
2219 | for_each_new_connector_in_state(state, connector, new_conn_state, i) { |
2220 | if (new_conn_state->crtc == set->crtc) { | |
2221 | ret = drm_atomic_set_crtc_for_connector(new_conn_state, | |
042652ed DV |
2222 | NULL); |
2223 | if (ret) | |
2224 | return ret; | |
415c3ac3 | 2225 | |
40ee6fbe | 2226 | /* Make sure legacy setCrtc always re-trains */ |
415c3ac3 | 2227 | new_conn_state->link_status = DRM_LINK_STATUS_GOOD; |
042652ed | 2228 | } |
6ab520a2 | 2229 | } |
042652ed | 2230 | |
6ab520a2 ML |
2231 | /* Then set all connectors from set->connectors on the target crtc */ |
2232 | for (i = 0; i < set->num_connectors; i++) { | |
415c3ac3 | 2233 | new_conn_state = drm_atomic_get_connector_state(state, |
6ab520a2 | 2234 | set->connectors[i]); |
415c3ac3 ML |
2235 | if (IS_ERR(new_conn_state)) |
2236 | return PTR_ERR(new_conn_state); | |
6ab520a2 | 2237 | |
415c3ac3 | 2238 | ret = drm_atomic_set_crtc_for_connector(new_conn_state, |
6ab520a2 ML |
2239 | set->crtc); |
2240 | if (ret) | |
2241 | return ret; | |
042652ed DV |
2242 | } |
2243 | ||
415c3ac3 | 2244 | for_each_new_crtc_in_state(state, crtc, new_crtc_state, i) { |
042652ed DV |
2245 | /* Don't update ->enable for the CRTC in the set_config request, |
2246 | * since a mismatch would indicate a bug in the upper layers. | |
2247 | * The actual modeset code later on will catch any | |
2248 | * inconsistencies here. */ | |
2249 | if (crtc == set->crtc) | |
2250 | continue; | |
2251 | ||
415c3ac3 ML |
2252 | if (!new_crtc_state->connector_mask) { |
2253 | ret = drm_atomic_set_mode_prop_for_crtc(new_crtc_state, | |
c30f55a7 LP |
2254 | NULL); |
2255 | if (ret < 0) | |
2256 | return ret; | |
2257 | ||
415c3ac3 | 2258 | new_crtc_state->active = false; |
c30f55a7 | 2259 | } |
042652ed DV |
2260 | } |
2261 | ||
2262 | return 0; | |
2263 | } | |
2264 | ||
2265 | /** | |
2266 | * drm_atomic_helper_set_config - set a new config from userspace | |
2267 | * @set: mode set configuration | |
a4eff9aa | 2268 | * @ctx: lock acquisition context |
042652ed DV |
2269 | * |
2270 | * Provides a default crtc set_config handler using the atomic driver interface. | |
2271 | * | |
40ee6fbe MN |
2272 | * NOTE: For backwards compatibility with old userspace this automatically |
2273 | * resets the "link-status" property to GOOD, to force any link | |
2274 | * re-training. The SETCRTC ioctl does not define whether an update does | |
2275 | * need a full modeset or just a plane update, hence we're allowed to do | |
2276 | * that. See also drm_mode_connector_set_link_status_property(). | |
2277 | * | |
042652ed DV |
2278 | * Returns: |
2279 | * Returns 0 on success, negative errno numbers on failure. | |
2280 | */ | |
a4eff9aa DV |
2281 | int drm_atomic_helper_set_config(struct drm_mode_set *set, |
2282 | struct drm_modeset_acquire_ctx *ctx) | |
042652ed DV |
2283 | { |
2284 | struct drm_atomic_state *state; | |
2285 | struct drm_crtc *crtc = set->crtc; | |
042652ed DV |
2286 | int ret = 0; |
2287 | ||
2288 | state = drm_atomic_state_alloc(crtc->dev); | |
2289 | if (!state) | |
2290 | return -ENOMEM; | |
2291 | ||
40616a26 | 2292 | state->legacy_set_config = true; |
38b6441e | 2293 | state->acquire_ctx = ctx; |
bbb1e524 RC |
2294 | ret = __drm_atomic_helper_set_config(set, state); |
2295 | if (ret != 0) | |
1fa4da04 | 2296 | goto fail; |
042652ed | 2297 | |
bbb1e524 | 2298 | ret = drm_atomic_commit(state); |
bbb1e524 | 2299 | |
1fa4da04 | 2300 | fail: |
0853695c | 2301 | drm_atomic_state_put(state); |
bbb1e524 | 2302 | return ret; |
bbb1e524 RC |
2303 | } |
2304 | EXPORT_SYMBOL(drm_atomic_helper_set_config); | |
2305 | ||
2306 | /* just used from fb-helper and atomic-helper: */ | |
2307 | int __drm_atomic_helper_set_config(struct drm_mode_set *set, | |
2308 | struct drm_atomic_state *state) | |
2309 | { | |
2310 | struct drm_crtc_state *crtc_state; | |
2311 | struct drm_plane_state *primary_state; | |
2312 | struct drm_crtc *crtc = set->crtc; | |
83926117 | 2313 | int hdisplay, vdisplay; |
bbb1e524 RC |
2314 | int ret; |
2315 | ||
2316 | crtc_state = drm_atomic_get_crtc_state(state, crtc); | |
2317 | if (IS_ERR(crtc_state)) | |
2318 | return PTR_ERR(crtc_state); | |
2319 | ||
2320 | primary_state = drm_atomic_get_plane_state(state, crtc->primary); | |
2321 | if (IS_ERR(primary_state)) | |
2322 | return PTR_ERR(primary_state); | |
e5b5341c | 2323 | |
042652ed DV |
2324 | if (!set->mode) { |
2325 | WARN_ON(set->fb); | |
2326 | WARN_ON(set->num_connectors); | |
2327 | ||
819364da DS |
2328 | ret = drm_atomic_set_mode_for_crtc(crtc_state, NULL); |
2329 | if (ret != 0) | |
bbb1e524 | 2330 | return ret; |
819364da | 2331 | |
eab3bbef | 2332 | crtc_state->active = false; |
e5b5341c | 2333 | |
07cc0ef6 | 2334 | ret = drm_atomic_set_crtc_for_plane(primary_state, NULL); |
e5b5341c | 2335 | if (ret != 0) |
bbb1e524 | 2336 | return ret; |
e5b5341c RC |
2337 | |
2338 | drm_atomic_set_fb_for_plane(primary_state, NULL); | |
2339 | ||
042652ed DV |
2340 | goto commit; |
2341 | } | |
2342 | ||
2343 | WARN_ON(!set->fb); | |
2344 | WARN_ON(!set->num_connectors); | |
2345 | ||
819364da DS |
2346 | ret = drm_atomic_set_mode_for_crtc(crtc_state, set->mode); |
2347 | if (ret != 0) | |
bbb1e524 | 2348 | return ret; |
819364da | 2349 | |
eab3bbef | 2350 | crtc_state->active = true; |
042652ed | 2351 | |
07cc0ef6 | 2352 | ret = drm_atomic_set_crtc_for_plane(primary_state, crtc); |
042652ed | 2353 | if (ret != 0) |
bbb1e524 RC |
2354 | return ret; |
2355 | ||
196cd5d3 | 2356 | drm_mode_get_hv_timing(set->mode, &hdisplay, &vdisplay); |
83926117 | 2357 | |
321ebf04 | 2358 | drm_atomic_set_fb_for_plane(primary_state, set->fb); |
042652ed DV |
2359 | primary_state->crtc_x = 0; |
2360 | primary_state->crtc_y = 0; | |
83926117 | 2361 | primary_state->crtc_w = hdisplay; |
02e6f379 | 2362 | primary_state->crtc_h = vdisplay; |
042652ed DV |
2363 | primary_state->src_x = set->x << 16; |
2364 | primary_state->src_y = set->y << 16; | |
bd2ef25d | 2365 | if (drm_rotation_90_or_270(primary_state->rotation)) { |
83926117 | 2366 | primary_state->src_w = vdisplay << 16; |
02e6f379 | 2367 | primary_state->src_h = hdisplay << 16; |
41121248 | 2368 | } else { |
83926117 | 2369 | primary_state->src_w = hdisplay << 16; |
02e6f379 | 2370 | primary_state->src_h = vdisplay << 16; |
41121248 | 2371 | } |
042652ed DV |
2372 | |
2373 | commit: | |
2374 | ret = update_output_state(state, set); | |
2375 | if (ret) | |
bbb1e524 | 2376 | return ret; |
042652ed | 2377 | |
042652ed | 2378 | return 0; |
042652ed | 2379 | } |
042652ed | 2380 | |
14942760 TR |
2381 | /** |
2382 | * drm_atomic_helper_disable_all - disable all currently active outputs | |
2383 | * @dev: DRM device | |
2384 | * @ctx: lock acquisition context | |
2385 | * | |
2386 | * Loops through all connectors, finding those that aren't turned off and then | |
2387 | * turns them off by setting their DPMS mode to OFF and deactivating the CRTC | |
2388 | * that they are connected to. | |
2389 | * | |
2390 | * This is used for example in suspend/resume to disable all currently active | |
18dddadc DV |
2391 | * functions when suspending. If you just want to shut down everything at e.g. |
2392 | * driver unload, look at drm_atomic_helper_shutdown(). | |
14942760 TR |
2393 | * |
2394 | * Note that if callers haven't already acquired all modeset locks this might | |
2395 | * return -EDEADLK, which must be handled by calling drm_modeset_backoff(). | |
2396 | * | |
2397 | * Returns: | |
2398 | * 0 on success or a negative error code on failure. | |
2399 | * | |
2400 | * See also: | |
18dddadc DV |
2401 | * drm_atomic_helper_suspend(), drm_atomic_helper_resume() and |
2402 | * drm_atomic_helper_shutdown(). | |
14942760 TR |
2403 | */ |
2404 | int drm_atomic_helper_disable_all(struct drm_device *dev, | |
2405 | struct drm_modeset_acquire_ctx *ctx) | |
2406 | { | |
2407 | struct drm_atomic_state *state; | |
9b2104f4 | 2408 | struct drm_connector_state *conn_state; |
14942760 | 2409 | struct drm_connector *conn; |
9b2104f4 ML |
2410 | struct drm_plane_state *plane_state; |
2411 | struct drm_plane *plane; | |
2412 | struct drm_crtc_state *crtc_state; | |
2413 | struct drm_crtc *crtc; | |
2414 | int ret, i; | |
14942760 TR |
2415 | |
2416 | state = drm_atomic_state_alloc(dev); | |
2417 | if (!state) | |
2418 | return -ENOMEM; | |
2419 | ||
2420 | state->acquire_ctx = ctx; | |
2421 | ||
9b2104f4 | 2422 | drm_for_each_crtc(crtc, dev) { |
14942760 TR |
2423 | crtc_state = drm_atomic_get_crtc_state(state, crtc); |
2424 | if (IS_ERR(crtc_state)) { | |
9b2104f4 | 2425 | ret = PTR_ERR(crtc_state); |
14942760 TR |
2426 | goto free; |
2427 | } | |
2428 | ||
2429 | crtc_state->active = false; | |
9b2104f4 ML |
2430 | |
2431 | ret = drm_atomic_set_mode_prop_for_crtc(crtc_state, NULL); | |
2432 | if (ret < 0) | |
2433 | goto free; | |
2434 | ||
2435 | ret = drm_atomic_add_affected_planes(state, crtc); | |
2436 | if (ret < 0) | |
2437 | goto free; | |
2438 | ||
2439 | ret = drm_atomic_add_affected_connectors(state, crtc); | |
2440 | if (ret < 0) | |
2441 | goto free; | |
2442 | } | |
2443 | ||
2444 | for_each_connector_in_state(state, conn, conn_state, i) { | |
2445 | ret = drm_atomic_set_crtc_for_connector(conn_state, NULL); | |
2446 | if (ret < 0) | |
2447 | goto free; | |
2448 | } | |
2449 | ||
2450 | for_each_plane_in_state(state, plane, plane_state, i) { | |
2451 | ret = drm_atomic_set_crtc_for_plane(plane_state, NULL); | |
2452 | if (ret < 0) | |
2453 | goto free; | |
2454 | ||
2455 | drm_atomic_set_fb_for_plane(plane_state, NULL); | |
14942760 TR |
2456 | } |
2457 | ||
9b2104f4 | 2458 | ret = drm_atomic_commit(state); |
14942760 | 2459 | free: |
0853695c | 2460 | drm_atomic_state_put(state); |
9b2104f4 | 2461 | return ret; |
14942760 | 2462 | } |
9b2104f4 | 2463 | |
14942760 TR |
2464 | EXPORT_SYMBOL(drm_atomic_helper_disable_all); |
2465 | ||
18dddadc DV |
2466 | /** |
2467 | * drm_atomic_helper_shutdown - shutdown all CRTC | |
2468 | * @dev: DRM device | |
2469 | * | |
2470 | * This shuts down all CRTC, which is useful for driver unloading. Shutdown on | |
2471 | * suspend should instead be handled with drm_atomic_helper_suspend(), since | |
2472 | * that also takes a snapshot of the modeset state to be restored on resume. | |
2473 | * | |
2474 | * This is just a convenience wrapper around drm_atomic_helper_disable_all(), | |
2475 | * and it is the atomic version of drm_crtc_force_disable_all(). | |
2476 | */ | |
2477 | void drm_atomic_helper_shutdown(struct drm_device *dev) | |
2478 | { | |
2479 | struct drm_modeset_acquire_ctx ctx; | |
2480 | int ret; | |
2481 | ||
2482 | drm_modeset_acquire_init(&ctx, 0); | |
2483 | while (1) { | |
2484 | ret = drm_modeset_lock_all_ctx(dev, &ctx); | |
2485 | if (!ret) | |
2486 | ret = drm_atomic_helper_disable_all(dev, &ctx); | |
2487 | ||
2488 | if (ret != -EDEADLK) | |
2489 | break; | |
2490 | ||
2491 | drm_modeset_backoff(&ctx); | |
2492 | } | |
2493 | ||
2494 | if (ret) | |
2495 | DRM_ERROR("Disabling all crtc's during unload failed with %i\n", ret); | |
2496 | ||
2497 | drm_modeset_drop_locks(&ctx); | |
2498 | drm_modeset_acquire_fini(&ctx); | |
2499 | } | |
2500 | EXPORT_SYMBOL(drm_atomic_helper_shutdown); | |
2501 | ||
14942760 TR |
2502 | /** |
2503 | * drm_atomic_helper_suspend - subsystem-level suspend helper | |
2504 | * @dev: DRM device | |
2505 | * | |
2506 | * Duplicates the current atomic state, disables all active outputs and then | |
2507 | * returns a pointer to the original atomic state to the caller. Drivers can | |
2508 | * pass this pointer to the drm_atomic_helper_resume() helper upon resume to | |
2509 | * restore the output configuration that was active at the time the system | |
2510 | * entered suspend. | |
2511 | * | |
2512 | * Note that it is potentially unsafe to use this. The atomic state object | |
2513 | * returned by this function is assumed to be persistent. Drivers must ensure | |
2514 | * that this holds true. Before calling this function, drivers must make sure | |
2515 | * to suspend fbdev emulation so that nothing can be using the device. | |
2516 | * | |
2517 | * Returns: | |
2518 | * A pointer to a copy of the state before suspend on success or an ERR_PTR()- | |
2519 | * encoded error code on failure. Drivers should store the returned atomic | |
2520 | * state object and pass it to the drm_atomic_helper_resume() helper upon | |
2521 | * resume. | |
2522 | * | |
2523 | * See also: | |
2524 | * drm_atomic_helper_duplicate_state(), drm_atomic_helper_disable_all(), | |
581e49fe | 2525 | * drm_atomic_helper_resume(), drm_atomic_helper_commit_duplicated_state() |
14942760 TR |
2526 | */ |
2527 | struct drm_atomic_state *drm_atomic_helper_suspend(struct drm_device *dev) | |
2528 | { | |
2529 | struct drm_modeset_acquire_ctx ctx; | |
2530 | struct drm_atomic_state *state; | |
2531 | int err; | |
2532 | ||
2533 | drm_modeset_acquire_init(&ctx, 0); | |
2534 | ||
2535 | retry: | |
2536 | err = drm_modeset_lock_all_ctx(dev, &ctx); | |
2537 | if (err < 0) { | |
2538 | state = ERR_PTR(err); | |
2539 | goto unlock; | |
2540 | } | |
2541 | ||
2542 | state = drm_atomic_helper_duplicate_state(dev, &ctx); | |
2543 | if (IS_ERR(state)) | |
2544 | goto unlock; | |
2545 | ||
2546 | err = drm_atomic_helper_disable_all(dev, &ctx); | |
2547 | if (err < 0) { | |
0853695c | 2548 | drm_atomic_state_put(state); |
14942760 TR |
2549 | state = ERR_PTR(err); |
2550 | goto unlock; | |
2551 | } | |
2552 | ||
2553 | unlock: | |
2554 | if (PTR_ERR(state) == -EDEADLK) { | |
2555 | drm_modeset_backoff(&ctx); | |
2556 | goto retry; | |
2557 | } | |
2558 | ||
2559 | drm_modeset_drop_locks(&ctx); | |
2560 | drm_modeset_acquire_fini(&ctx); | |
2561 | return state; | |
2562 | } | |
2563 | EXPORT_SYMBOL(drm_atomic_helper_suspend); | |
2564 | ||
581e49fe ML |
2565 | /** |
2566 | * drm_atomic_helper_commit_duplicated_state - commit duplicated state | |
2567 | * @state: duplicated atomic state to commit | |
2568 | * @ctx: pointer to acquire_ctx to use for commit. | |
2569 | * | |
2570 | * The state returned by drm_atomic_helper_duplicate_state() and | |
2571 | * drm_atomic_helper_suspend() is partially invalid, and needs to | |
2572 | * be fixed up before commit. | |
2573 | * | |
2574 | * Returns: | |
2575 | * 0 on success or a negative error code on failure. | |
2576 | * | |
2577 | * See also: | |
2578 | * drm_atomic_helper_suspend() | |
2579 | */ | |
2580 | int drm_atomic_helper_commit_duplicated_state(struct drm_atomic_state *state, | |
2581 | struct drm_modeset_acquire_ctx *ctx) | |
2582 | { | |
2583 | int i; | |
2584 | struct drm_plane *plane; | |
415c3ac3 | 2585 | struct drm_plane_state *new_plane_state; |
581e49fe | 2586 | struct drm_connector *connector; |
415c3ac3 | 2587 | struct drm_connector_state *new_conn_state; |
581e49fe | 2588 | struct drm_crtc *crtc; |
415c3ac3 | 2589 | struct drm_crtc_state *new_crtc_state; |
581e49fe ML |
2590 | |
2591 | state->acquire_ctx = ctx; | |
2592 | ||
415c3ac3 | 2593 | for_each_new_plane_in_state(state, plane, new_plane_state, i) |
581e49fe ML |
2594 | state->planes[i].old_state = plane->state; |
2595 | ||
415c3ac3 | 2596 | for_each_new_crtc_in_state(state, crtc, new_crtc_state, i) |
581e49fe ML |
2597 | state->crtcs[i].old_state = crtc->state; |
2598 | ||
415c3ac3 | 2599 | for_each_new_connector_in_state(state, connector, new_conn_state, i) |
581e49fe ML |
2600 | state->connectors[i].old_state = connector->state; |
2601 | ||
2602 | return drm_atomic_commit(state); | |
2603 | } | |
2604 | EXPORT_SYMBOL(drm_atomic_helper_commit_duplicated_state); | |
2605 | ||
14942760 TR |
2606 | /** |
2607 | * drm_atomic_helper_resume - subsystem-level resume helper | |
2608 | * @dev: DRM device | |
2609 | * @state: atomic state to resume to | |
2610 | * | |
2611 | * Calls drm_mode_config_reset() to synchronize hardware and software states, | |
2612 | * grabs all modeset locks and commits the atomic state object. This can be | |
2613 | * used in conjunction with the drm_atomic_helper_suspend() helper to | |
2614 | * implement suspend/resume for drivers that support atomic mode-setting. | |
2615 | * | |
2616 | * Returns: | |
2617 | * 0 on success or a negative error code on failure. | |
2618 | * | |
2619 | * See also: | |
2620 | * drm_atomic_helper_suspend() | |
2621 | */ | |
2622 | int drm_atomic_helper_resume(struct drm_device *dev, | |
2623 | struct drm_atomic_state *state) | |
2624 | { | |
2625 | struct drm_mode_config *config = &dev->mode_config; | |
2626 | int err; | |
2627 | ||
2628 | drm_mode_config_reset(dev); | |
581e49fe | 2629 | |
14942760 | 2630 | drm_modeset_lock_all(dev); |
581e49fe | 2631 | err = drm_atomic_helper_commit_duplicated_state(state, config->acquire_ctx); |
14942760 TR |
2632 | drm_modeset_unlock_all(dev); |
2633 | ||
2634 | return err; | |
2635 | } | |
2636 | EXPORT_SYMBOL(drm_atomic_helper_resume); | |
2637 | ||
042652ed | 2638 | /** |
7f50002f | 2639 | * drm_atomic_helper_crtc_set_property - helper for crtc properties |
042652ed DV |
2640 | * @crtc: DRM crtc |
2641 | * @property: DRM property | |
2642 | * @val: value of property | |
2643 | * | |
7f50002f LP |
2644 | * Provides a default crtc set_property handler using the atomic driver |
2645 | * interface. | |
042652ed DV |
2646 | * |
2647 | * RETURNS: | |
2648 | * Zero on success, error code on failure | |
2649 | */ | |
2650 | int | |
2651 | drm_atomic_helper_crtc_set_property(struct drm_crtc *crtc, | |
2652 | struct drm_property *property, | |
2653 | uint64_t val) | |
2654 | { | |
2655 | struct drm_atomic_state *state; | |
2656 | struct drm_crtc_state *crtc_state; | |
2657 | int ret = 0; | |
2658 | ||
2659 | state = drm_atomic_state_alloc(crtc->dev); | |
2660 | if (!state) | |
2661 | return -ENOMEM; | |
2662 | ||
2663 | /* ->set_property is always called with all locks held. */ | |
2664 | state->acquire_ctx = crtc->dev->mode_config.acquire_ctx; | |
2665 | retry: | |
2666 | crtc_state = drm_atomic_get_crtc_state(state, crtc); | |
2667 | if (IS_ERR(crtc_state)) { | |
2668 | ret = PTR_ERR(crtc_state); | |
2669 | goto fail; | |
2670 | } | |
2671 | ||
40ecc694 RC |
2672 | ret = drm_atomic_crtc_set_property(crtc, crtc_state, |
2673 | property, val); | |
042652ed DV |
2674 | if (ret) |
2675 | goto fail; | |
2676 | ||
2677 | ret = drm_atomic_commit(state); | |
042652ed DV |
2678 | fail: |
2679 | if (ret == -EDEADLK) | |
2680 | goto backoff; | |
2681 | ||
0853695c | 2682 | drm_atomic_state_put(state); |
042652ed | 2683 | return ret; |
0853695c | 2684 | |
042652ed | 2685 | backoff: |
042652ed | 2686 | drm_atomic_state_clear(state); |
6f75cea6 | 2687 | drm_atomic_legacy_backoff(state); |
042652ed DV |
2688 | |
2689 | goto retry; | |
2690 | } | |
2691 | EXPORT_SYMBOL(drm_atomic_helper_crtc_set_property); | |
2692 | ||
2693 | /** | |
7f50002f | 2694 | * drm_atomic_helper_plane_set_property - helper for plane properties |
042652ed DV |
2695 | * @plane: DRM plane |
2696 | * @property: DRM property | |
2697 | * @val: value of property | |
2698 | * | |
7f50002f LP |
2699 | * Provides a default plane set_property handler using the atomic driver |
2700 | * interface. | |
042652ed DV |
2701 | * |
2702 | * RETURNS: | |
2703 | * Zero on success, error code on failure | |
2704 | */ | |
2705 | int | |
2706 | drm_atomic_helper_plane_set_property(struct drm_plane *plane, | |
2707 | struct drm_property *property, | |
2708 | uint64_t val) | |
2709 | { | |
2710 | struct drm_atomic_state *state; | |
2711 | struct drm_plane_state *plane_state; | |
2712 | int ret = 0; | |
2713 | ||
2714 | state = drm_atomic_state_alloc(plane->dev); | |
2715 | if (!state) | |
2716 | return -ENOMEM; | |
2717 | ||
2718 | /* ->set_property is always called with all locks held. */ | |
2719 | state->acquire_ctx = plane->dev->mode_config.acquire_ctx; | |
2720 | retry: | |
2721 | plane_state = drm_atomic_get_plane_state(state, plane); | |
2722 | if (IS_ERR(plane_state)) { | |
2723 | ret = PTR_ERR(plane_state); | |
2724 | goto fail; | |
2725 | } | |
2726 | ||
40ecc694 RC |
2727 | ret = drm_atomic_plane_set_property(plane, plane_state, |
2728 | property, val); | |
042652ed DV |
2729 | if (ret) |
2730 | goto fail; | |
2731 | ||
2732 | ret = drm_atomic_commit(state); | |
042652ed DV |
2733 | fail: |
2734 | if (ret == -EDEADLK) | |
2735 | goto backoff; | |
2736 | ||
0853695c | 2737 | drm_atomic_state_put(state); |
042652ed | 2738 | return ret; |
0853695c | 2739 | |
042652ed | 2740 | backoff: |
042652ed | 2741 | drm_atomic_state_clear(state); |
6f75cea6 | 2742 | drm_atomic_legacy_backoff(state); |
042652ed DV |
2743 | |
2744 | goto retry; | |
2745 | } | |
2746 | EXPORT_SYMBOL(drm_atomic_helper_plane_set_property); | |
2747 | ||
2748 | /** | |
7f50002f | 2749 | * drm_atomic_helper_connector_set_property - helper for connector properties |
042652ed DV |
2750 | * @connector: DRM connector |
2751 | * @property: DRM property | |
2752 | * @val: value of property | |
2753 | * | |
7f50002f LP |
2754 | * Provides a default connector set_property handler using the atomic driver |
2755 | * interface. | |
042652ed DV |
2756 | * |
2757 | * RETURNS: | |
2758 | * Zero on success, error code on failure | |
2759 | */ | |
2760 | int | |
2761 | drm_atomic_helper_connector_set_property(struct drm_connector *connector, | |
2762 | struct drm_property *property, | |
2763 | uint64_t val) | |
2764 | { | |
2765 | struct drm_atomic_state *state; | |
2766 | struct drm_connector_state *connector_state; | |
2767 | int ret = 0; | |
2768 | ||
2769 | state = drm_atomic_state_alloc(connector->dev); | |
2770 | if (!state) | |
2771 | return -ENOMEM; | |
2772 | ||
2773 | /* ->set_property is always called with all locks held. */ | |
2774 | state->acquire_ctx = connector->dev->mode_config.acquire_ctx; | |
2775 | retry: | |
2776 | connector_state = drm_atomic_get_connector_state(state, connector); | |
2777 | if (IS_ERR(connector_state)) { | |
2778 | ret = PTR_ERR(connector_state); | |
2779 | goto fail; | |
2780 | } | |
2781 | ||
40ecc694 RC |
2782 | ret = drm_atomic_connector_set_property(connector, connector_state, |
2783 | property, val); | |
042652ed DV |
2784 | if (ret) |
2785 | goto fail; | |
2786 | ||
2787 | ret = drm_atomic_commit(state); | |
042652ed DV |
2788 | fail: |
2789 | if (ret == -EDEADLK) | |
2790 | goto backoff; | |
2791 | ||
0853695c | 2792 | drm_atomic_state_put(state); |
042652ed | 2793 | return ret; |
0853695c | 2794 | |
042652ed | 2795 | backoff: |
042652ed | 2796 | drm_atomic_state_clear(state); |
6f75cea6 | 2797 | drm_atomic_legacy_backoff(state); |
042652ed DV |
2798 | |
2799 | goto retry; | |
2800 | } | |
2801 | EXPORT_SYMBOL(drm_atomic_helper_connector_set_property); | |
8bc0f312 | 2802 | |
f869a6ec AG |
2803 | static int page_flip_common( |
2804 | struct drm_atomic_state *state, | |
2805 | struct drm_crtc *crtc, | |
2806 | struct drm_framebuffer *fb, | |
6cbe5c46 AG |
2807 | struct drm_pending_vblank_event *event, |
2808 | uint32_t flags) | |
f869a6ec AG |
2809 | { |
2810 | struct drm_plane *plane = crtc->primary; | |
2811 | struct drm_plane_state *plane_state; | |
2812 | struct drm_crtc_state *crtc_state; | |
2813 | int ret = 0; | |
2814 | ||
2815 | crtc_state = drm_atomic_get_crtc_state(state, crtc); | |
2816 | if (IS_ERR(crtc_state)) | |
2817 | return PTR_ERR(crtc_state); | |
2818 | ||
2819 | crtc_state->event = event; | |
6cbe5c46 | 2820 | crtc_state->pageflip_flags = flags; |
f869a6ec AG |
2821 | |
2822 | plane_state = drm_atomic_get_plane_state(state, plane); | |
2823 | if (IS_ERR(plane_state)) | |
2824 | return PTR_ERR(plane_state); | |
2825 | ||
f869a6ec AG |
2826 | ret = drm_atomic_set_crtc_for_plane(plane_state, crtc); |
2827 | if (ret != 0) | |
2828 | return ret; | |
2829 | drm_atomic_set_fb_for_plane(plane_state, fb); | |
2830 | ||
2831 | /* Make sure we don't accidentally do a full modeset. */ | |
2832 | state->allow_modeset = false; | |
2833 | if (!crtc_state->active) { | |
6ac7c548 RK |
2834 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] disabled, rejecting legacy flip\n", |
2835 | crtc->base.id, crtc->name); | |
f869a6ec AG |
2836 | return -EINVAL; |
2837 | } | |
2838 | ||
2839 | return ret; | |
2840 | } | |
2841 | ||
8bc0f312 DV |
2842 | /** |
2843 | * drm_atomic_helper_page_flip - execute a legacy page flip | |
2844 | * @crtc: DRM crtc | |
2845 | * @fb: DRM framebuffer | |
2846 | * @event: optional DRM event to signal upon completion | |
2847 | * @flags: flip flags for non-vblank sync'ed updates | |
41292b1f | 2848 | * @ctx: lock acquisition context |
8bc0f312 | 2849 | * |
f869a6ec AG |
2850 | * Provides a default &drm_crtc_funcs.page_flip implementation |
2851 | * using the atomic driver interface. | |
8bc0f312 | 2852 | * |
8bc0f312 DV |
2853 | * Returns: |
2854 | * Returns 0 on success, negative errno numbers on failure. | |
f869a6ec AG |
2855 | * |
2856 | * See also: | |
2857 | * drm_atomic_helper_page_flip_target() | |
8bc0f312 DV |
2858 | */ |
2859 | int drm_atomic_helper_page_flip(struct drm_crtc *crtc, | |
2860 | struct drm_framebuffer *fb, | |
2861 | struct drm_pending_vblank_event *event, | |
41292b1f DV |
2862 | uint32_t flags, |
2863 | struct drm_modeset_acquire_ctx *ctx) | |
8bc0f312 DV |
2864 | { |
2865 | struct drm_plane *plane = crtc->primary; | |
2866 | struct drm_atomic_state *state; | |
8bc0f312 DV |
2867 | int ret = 0; |
2868 | ||
8bc0f312 DV |
2869 | state = drm_atomic_state_alloc(plane->dev); |
2870 | if (!state) | |
2871 | return -ENOMEM; | |
2872 | ||
043e7fb6 | 2873 | state->acquire_ctx = ctx; |
f869a6ec | 2874 | |
6cbe5c46 | 2875 | ret = page_flip_common(state, crtc, fb, event, flags); |
f869a6ec | 2876 | if (ret != 0) |
8bc0f312 | 2877 | goto fail; |
8bc0f312 | 2878 | |
f869a6ec | 2879 | ret = drm_atomic_nonblocking_commit(state); |
f869a6ec | 2880 | fail: |
f869a6ec AG |
2881 | drm_atomic_state_put(state); |
2882 | return ret; | |
f869a6ec AG |
2883 | } |
2884 | EXPORT_SYMBOL(drm_atomic_helper_page_flip); | |
2885 | ||
2886 | /** | |
2887 | * drm_atomic_helper_page_flip_target - do page flip on target vblank period. | |
2888 | * @crtc: DRM crtc | |
2889 | * @fb: DRM framebuffer | |
2890 | * @event: optional DRM event to signal upon completion | |
2891 | * @flags: flip flags for non-vblank sync'ed updates | |
2892 | * @target: specifying the target vblank period when the flip to take effect | |
41292b1f | 2893 | * @ctx: lock acquisition context |
f869a6ec AG |
2894 | * |
2895 | * Provides a default &drm_crtc_funcs.page_flip_target implementation. | |
2896 | * Similar to drm_atomic_helper_page_flip() with extra parameter to specify | |
2897 | * target vblank period to flip. | |
2898 | * | |
2899 | * Returns: | |
2900 | * Returns 0 on success, negative errno numbers on failure. | |
2901 | */ | |
2902 | int drm_atomic_helper_page_flip_target( | |
2903 | struct drm_crtc *crtc, | |
2904 | struct drm_framebuffer *fb, | |
2905 | struct drm_pending_vblank_event *event, | |
2906 | uint32_t flags, | |
41292b1f DV |
2907 | uint32_t target, |
2908 | struct drm_modeset_acquire_ctx *ctx) | |
f869a6ec AG |
2909 | { |
2910 | struct drm_plane *plane = crtc->primary; | |
2911 | struct drm_atomic_state *state; | |
2912 | struct drm_crtc_state *crtc_state; | |
2913 | int ret = 0; | |
2914 | ||
f869a6ec AG |
2915 | state = drm_atomic_state_alloc(plane->dev); |
2916 | if (!state) | |
2917 | return -ENOMEM; | |
2918 | ||
043e7fb6 | 2919 | state->acquire_ctx = ctx; |
f869a6ec | 2920 | |
6cbe5c46 | 2921 | ret = page_flip_common(state, crtc, fb, event, flags); |
8bc0f312 DV |
2922 | if (ret != 0) |
2923 | goto fail; | |
8bc0f312 | 2924 | |
b4d93679 | 2925 | crtc_state = drm_atomic_get_new_crtc_state(state, crtc); |
f869a6ec | 2926 | if (WARN_ON(!crtc_state)) { |
4cba6850 DV |
2927 | ret = -EINVAL; |
2928 | goto fail; | |
2929 | } | |
f869a6ec | 2930 | crtc_state->target_vblank = target; |
4cba6850 | 2931 | |
b837ba0a | 2932 | ret = drm_atomic_nonblocking_commit(state); |
8bc0f312 | 2933 | fail: |
0853695c | 2934 | drm_atomic_state_put(state); |
8bc0f312 | 2935 | return ret; |
8bc0f312 | 2936 | } |
f869a6ec | 2937 | EXPORT_SYMBOL(drm_atomic_helper_page_flip_target); |
d461701c | 2938 | |
b486e0e6 DV |
2939 | /** |
2940 | * drm_atomic_helper_connector_dpms() - connector dpms helper implementation | |
2941 | * @connector: affected connector | |
2942 | * @mode: DPMS mode | |
2943 | * | |
2944 | * This is the main helper function provided by the atomic helper framework for | |
2945 | * implementing the legacy DPMS connector interface. It computes the new desired | |
6806cdf9 DV |
2946 | * &drm_crtc_state.active state for the corresponding CRTC (if the connector is |
2947 | * enabled) and updates it. | |
9a69a9ac ML |
2948 | * |
2949 | * Returns: | |
2950 | * Returns 0 on success, negative errno numbers on failure. | |
b486e0e6 | 2951 | */ |
9a69a9ac ML |
2952 | int drm_atomic_helper_connector_dpms(struct drm_connector *connector, |
2953 | int mode) | |
b486e0e6 DV |
2954 | { |
2955 | struct drm_mode_config *config = &connector->dev->mode_config; | |
2956 | struct drm_atomic_state *state; | |
2957 | struct drm_crtc_state *crtc_state; | |
2958 | struct drm_crtc *crtc; | |
2959 | struct drm_connector *tmp_connector; | |
c36a3254 | 2960 | struct drm_connector_list_iter conn_iter; |
b486e0e6 DV |
2961 | int ret; |
2962 | bool active = false; | |
9a69a9ac | 2963 | int old_mode = connector->dpms; |
b486e0e6 DV |
2964 | |
2965 | if (mode != DRM_MODE_DPMS_ON) | |
2966 | mode = DRM_MODE_DPMS_OFF; | |
2967 | ||
2968 | connector->dpms = mode; | |
2969 | crtc = connector->state->crtc; | |
2970 | ||
2971 | if (!crtc) | |
9a69a9ac | 2972 | return 0; |
b486e0e6 | 2973 | |
b486e0e6 DV |
2974 | state = drm_atomic_state_alloc(connector->dev); |
2975 | if (!state) | |
9a69a9ac | 2976 | return -ENOMEM; |
b486e0e6 DV |
2977 | |
2978 | state->acquire_ctx = drm_modeset_legacy_acquire_ctx(crtc); | |
2979 | retry: | |
2980 | crtc_state = drm_atomic_get_crtc_state(state, crtc); | |
9a69a9ac ML |
2981 | if (IS_ERR(crtc_state)) { |
2982 | ret = PTR_ERR(crtc_state); | |
2983 | goto fail; | |
2984 | } | |
b486e0e6 DV |
2985 | |
2986 | WARN_ON(!drm_modeset_is_locked(&config->connection_mutex)); | |
2987 | ||
b982dab1 | 2988 | drm_connector_list_iter_begin(connector->dev, &conn_iter); |
c36a3254 | 2989 | drm_for_each_connector_iter(tmp_connector, &conn_iter) { |
0388df05 | 2990 | if (tmp_connector->state->crtc != crtc) |
b486e0e6 DV |
2991 | continue; |
2992 | ||
0388df05 | 2993 | if (tmp_connector->dpms == DRM_MODE_DPMS_ON) { |
b486e0e6 DV |
2994 | active = true; |
2995 | break; | |
2996 | } | |
2997 | } | |
b982dab1 | 2998 | drm_connector_list_iter_end(&conn_iter); |
b486e0e6 DV |
2999 | crtc_state->active = active; |
3000 | ||
3001 | ret = drm_atomic_commit(state); | |
b486e0e6 DV |
3002 | fail: |
3003 | if (ret == -EDEADLK) | |
3004 | goto backoff; | |
8f5040e4 ML |
3005 | if (ret != 0) |
3006 | connector->dpms = old_mode; | |
0853695c | 3007 | drm_atomic_state_put(state); |
9a69a9ac | 3008 | return ret; |
0853695c | 3009 | |
b486e0e6 DV |
3010 | backoff: |
3011 | drm_atomic_state_clear(state); | |
3012 | drm_atomic_legacy_backoff(state); | |
3013 | ||
3014 | goto retry; | |
3015 | } | |
3016 | EXPORT_SYMBOL(drm_atomic_helper_connector_dpms); | |
3017 | ||
9ecb5498 | 3018 | /** |
6806cdf9 DV |
3019 | * drm_atomic_helper_best_encoder - Helper for |
3020 | * &drm_connector_helper_funcs.best_encoder callback | |
9ecb5498 NT |
3021 | * @connector: Connector control structure |
3022 | * | |
6806cdf9 | 3023 | * This is a &drm_connector_helper_funcs.best_encoder callback helper for |
9ecb5498 NT |
3024 | * connectors that support exactly 1 encoder, statically determined at driver |
3025 | * init time. | |
3026 | */ | |
3027 | struct drm_encoder * | |
3028 | drm_atomic_helper_best_encoder(struct drm_connector *connector) | |
3029 | { | |
3030 | WARN_ON(connector->encoder_ids[1]); | |
3031 | return drm_encoder_find(connector->dev, connector->encoder_ids[0]); | |
3032 | } | |
3033 | EXPORT_SYMBOL(drm_atomic_helper_best_encoder); | |
3034 | ||
3150c7d0 DV |
3035 | /** |
3036 | * DOC: atomic state reset and initialization | |
3037 | * | |
3038 | * Both the drm core and the atomic helpers assume that there is always the full | |
3039 | * and correct atomic software state for all connectors, CRTCs and planes | |
3040 | * available. Which is a bit a problem on driver load and also after system | |
3041 | * suspend. One way to solve this is to have a hardware state read-out | |
3042 | * infrastructure which reconstructs the full software state (e.g. the i915 | |
3043 | * driver). | |
3044 | * | |
3045 | * The simpler solution is to just reset the software state to everything off, | |
3046 | * which is easiest to do by calling drm_mode_config_reset(). To facilitate this | |
3047 | * the atomic helpers provide default reset implementations for all hooks. | |
7f8ee3e5 DV |
3048 | * |
3049 | * On the upside the precise state tracking of atomic simplifies system suspend | |
3050 | * and resume a lot. For drivers using drm_mode_config_reset() a complete recipe | |
3051 | * is implemented in drm_atomic_helper_suspend() and drm_atomic_helper_resume(). | |
3052 | * For other drivers the building blocks are split out, see the documentation | |
3053 | * for these functions. | |
3150c7d0 DV |
3054 | */ |
3055 | ||
d461701c | 3056 | /** |
6806cdf9 | 3057 | * drm_atomic_helper_crtc_reset - default &drm_crtc_funcs.reset hook for CRTCs |
d461701c DV |
3058 | * @crtc: drm CRTC |
3059 | * | |
3060 | * Resets the atomic state for @crtc by freeing the state pointer (which might | |
3061 | * be NULL, e.g. at driver load time) and allocating a new empty state object. | |
3062 | */ | |
3063 | void drm_atomic_helper_crtc_reset(struct drm_crtc *crtc) | |
3064 | { | |
b0b5511b | 3065 | if (crtc->state) |
ec2dc6a0 | 3066 | __drm_atomic_helper_crtc_destroy_state(crtc->state); |
b0b5511b | 3067 | |
d461701c DV |
3068 | kfree(crtc->state); |
3069 | crtc->state = kzalloc(sizeof(*crtc->state), GFP_KERNEL); | |
07cc0ef6 DV |
3070 | |
3071 | if (crtc->state) | |
3072 | crtc->state->crtc = crtc; | |
d461701c DV |
3073 | } |
3074 | EXPORT_SYMBOL(drm_atomic_helper_crtc_reset); | |
3075 | ||
f5e7840b TR |
3076 | /** |
3077 | * __drm_atomic_helper_crtc_duplicate_state - copy atomic CRTC state | |
3078 | * @crtc: CRTC object | |
3079 | * @state: atomic CRTC state | |
3080 | * | |
3081 | * Copies atomic state from a CRTC's current state and resets inferred values. | |
3082 | * This is useful for drivers that subclass the CRTC state. | |
3083 | */ | |
3084 | void __drm_atomic_helper_crtc_duplicate_state(struct drm_crtc *crtc, | |
3085 | struct drm_crtc_state *state) | |
3086 | { | |
3087 | memcpy(state, crtc->state, sizeof(*state)); | |
3088 | ||
99cf4a29 | 3089 | if (state->mode_blob) |
6472e509 | 3090 | drm_property_blob_get(state->mode_blob); |
5488dc16 | 3091 | if (state->degamma_lut) |
6472e509 | 3092 | drm_property_blob_get(state->degamma_lut); |
5488dc16 | 3093 | if (state->ctm) |
6472e509 | 3094 | drm_property_blob_get(state->ctm); |
5488dc16 | 3095 | if (state->gamma_lut) |
6472e509 | 3096 | drm_property_blob_get(state->gamma_lut); |
f5e7840b TR |
3097 | state->mode_changed = false; |
3098 | state->active_changed = false; | |
3099 | state->planes_changed = false; | |
fc596660 | 3100 | state->connectors_changed = false; |
5488dc16 | 3101 | state->color_mgmt_changed = false; |
44d1240d | 3102 | state->zpos_changed = false; |
f5e7840b | 3103 | state->event = NULL; |
6cbe5c46 | 3104 | state->pageflip_flags = 0; |
f5e7840b TR |
3105 | } |
3106 | EXPORT_SYMBOL(__drm_atomic_helper_crtc_duplicate_state); | |
3107 | ||
d461701c DV |
3108 | /** |
3109 | * drm_atomic_helper_crtc_duplicate_state - default state duplicate hook | |
3110 | * @crtc: drm CRTC | |
3111 | * | |
3112 | * Default CRTC state duplicate hook for drivers which don't have their own | |
3113 | * subclassed CRTC state structure. | |
3114 | */ | |
3115 | struct drm_crtc_state * | |
3116 | drm_atomic_helper_crtc_duplicate_state(struct drm_crtc *crtc) | |
3117 | { | |
3118 | struct drm_crtc_state *state; | |
3119 | ||
3120 | if (WARN_ON(!crtc->state)) | |
3121 | return NULL; | |
3122 | ||
f5e7840b TR |
3123 | state = kmalloc(sizeof(*state), GFP_KERNEL); |
3124 | if (state) | |
3125 | __drm_atomic_helper_crtc_duplicate_state(crtc, state); | |
d461701c DV |
3126 | |
3127 | return state; | |
3128 | } | |
3129 | EXPORT_SYMBOL(drm_atomic_helper_crtc_duplicate_state); | |
3130 | ||
f5e7840b TR |
3131 | /** |
3132 | * __drm_atomic_helper_crtc_destroy_state - release CRTC state | |
f5e7840b TR |
3133 | * @state: CRTC state object to release |
3134 | * | |
3135 | * Releases all resources stored in the CRTC state without actually freeing | |
3136 | * the memory of the CRTC state. This is useful for drivers that subclass the | |
3137 | * CRTC state. | |
3138 | */ | |
ec2dc6a0 | 3139 | void __drm_atomic_helper_crtc_destroy_state(struct drm_crtc_state *state) |
f5e7840b | 3140 | { |
6472e509 TR |
3141 | drm_property_blob_put(state->mode_blob); |
3142 | drm_property_blob_put(state->degamma_lut); | |
3143 | drm_property_blob_put(state->ctm); | |
3144 | drm_property_blob_put(state->gamma_lut); | |
f5e7840b TR |
3145 | } |
3146 | EXPORT_SYMBOL(__drm_atomic_helper_crtc_destroy_state); | |
3147 | ||
d461701c DV |
3148 | /** |
3149 | * drm_atomic_helper_crtc_destroy_state - default state destroy hook | |
3150 | * @crtc: drm CRTC | |
3151 | * @state: CRTC state object to release | |
3152 | * | |
3153 | * Default CRTC state destroy hook for drivers which don't have their own | |
3154 | * subclassed CRTC state structure. | |
3155 | */ | |
3156 | void drm_atomic_helper_crtc_destroy_state(struct drm_crtc *crtc, | |
3157 | struct drm_crtc_state *state) | |
3158 | { | |
ec2dc6a0 | 3159 | __drm_atomic_helper_crtc_destroy_state(state); |
d461701c DV |
3160 | kfree(state); |
3161 | } | |
3162 | EXPORT_SYMBOL(drm_atomic_helper_crtc_destroy_state); | |
3163 | ||
3164 | /** | |
6806cdf9 | 3165 | * drm_atomic_helper_plane_reset - default &drm_plane_funcs.reset hook for planes |
d461701c DV |
3166 | * @plane: drm plane |
3167 | * | |
3168 | * Resets the atomic state for @plane by freeing the state pointer (which might | |
3169 | * be NULL, e.g. at driver load time) and allocating a new empty state object. | |
3170 | */ | |
3171 | void drm_atomic_helper_plane_reset(struct drm_plane *plane) | |
3172 | { | |
b0b5511b | 3173 | if (plane->state) |
2f701695 | 3174 | __drm_atomic_helper_plane_destroy_state(plane->state); |
321ebf04 | 3175 | |
d461701c DV |
3176 | kfree(plane->state); |
3177 | plane->state = kzalloc(sizeof(*plane->state), GFP_KERNEL); | |
07cc0ef6 | 3178 | |
25aaa3a1 | 3179 | if (plane->state) { |
07cc0ef6 | 3180 | plane->state->plane = plane; |
31ad61e4 | 3181 | plane->state->rotation = DRM_ROTATE_0; |
25aaa3a1 | 3182 | } |
d461701c DV |
3183 | } |
3184 | EXPORT_SYMBOL(drm_atomic_helper_plane_reset); | |
3185 | ||
f5e7840b TR |
3186 | /** |
3187 | * __drm_atomic_helper_plane_duplicate_state - copy atomic plane state | |
3188 | * @plane: plane object | |
3189 | * @state: atomic plane state | |
3190 | * | |
3191 | * Copies atomic state from a plane's current state. This is useful for | |
3192 | * drivers that subclass the plane state. | |
3193 | */ | |
3194 | void __drm_atomic_helper_plane_duplicate_state(struct drm_plane *plane, | |
3195 | struct drm_plane_state *state) | |
3196 | { | |
3197 | memcpy(state, plane->state, sizeof(*state)); | |
3198 | ||
3199 | if (state->fb) | |
a4a69da0 | 3200 | drm_framebuffer_get(state->fb); |
96260142 GP |
3201 | |
3202 | state->fence = NULL; | |
f5e7840b TR |
3203 | } |
3204 | EXPORT_SYMBOL(__drm_atomic_helper_plane_duplicate_state); | |
3205 | ||
d461701c DV |
3206 | /** |
3207 | * drm_atomic_helper_plane_duplicate_state - default state duplicate hook | |
3208 | * @plane: drm plane | |
3209 | * | |
3210 | * Default plane state duplicate hook for drivers which don't have their own | |
3211 | * subclassed plane state structure. | |
3212 | */ | |
3213 | struct drm_plane_state * | |
3214 | drm_atomic_helper_plane_duplicate_state(struct drm_plane *plane) | |
3215 | { | |
321ebf04 DV |
3216 | struct drm_plane_state *state; |
3217 | ||
d461701c DV |
3218 | if (WARN_ON(!plane->state)) |
3219 | return NULL; | |
3220 | ||
f5e7840b TR |
3221 | state = kmalloc(sizeof(*state), GFP_KERNEL); |
3222 | if (state) | |
3223 | __drm_atomic_helper_plane_duplicate_state(plane, state); | |
321ebf04 DV |
3224 | |
3225 | return state; | |
d461701c DV |
3226 | } |
3227 | EXPORT_SYMBOL(drm_atomic_helper_plane_duplicate_state); | |
3228 | ||
f5e7840b TR |
3229 | /** |
3230 | * __drm_atomic_helper_plane_destroy_state - release plane state | |
f5e7840b TR |
3231 | * @state: plane state object to release |
3232 | * | |
3233 | * Releases all resources stored in the plane state without actually freeing | |
3234 | * the memory of the plane state. This is useful for drivers that subclass the | |
3235 | * plane state. | |
3236 | */ | |
2f701695 | 3237 | void __drm_atomic_helper_plane_destroy_state(struct drm_plane_state *state) |
f5e7840b TR |
3238 | { |
3239 | if (state->fb) | |
a4a69da0 | 3240 | drm_framebuffer_put(state->fb); |
96260142 GP |
3241 | |
3242 | if (state->fence) | |
3243 | dma_fence_put(state->fence); | |
f5e7840b TR |
3244 | } |
3245 | EXPORT_SYMBOL(__drm_atomic_helper_plane_destroy_state); | |
3246 | ||
d461701c DV |
3247 | /** |
3248 | * drm_atomic_helper_plane_destroy_state - default state destroy hook | |
3249 | * @plane: drm plane | |
3250 | * @state: plane state object to release | |
3251 | * | |
3252 | * Default plane state destroy hook for drivers which don't have their own | |
3253 | * subclassed plane state structure. | |
3254 | */ | |
3255 | void drm_atomic_helper_plane_destroy_state(struct drm_plane *plane, | |
321ebf04 | 3256 | struct drm_plane_state *state) |
d461701c | 3257 | { |
2f701695 | 3258 | __drm_atomic_helper_plane_destroy_state(state); |
d461701c DV |
3259 | kfree(state); |
3260 | } | |
3261 | EXPORT_SYMBOL(drm_atomic_helper_plane_destroy_state); | |
3262 | ||
4cd39917 ML |
3263 | /** |
3264 | * __drm_atomic_helper_connector_reset - reset state on connector | |
3265 | * @connector: drm connector | |
3266 | * @conn_state: connector state to assign | |
3267 | * | |
3268 | * Initializes the newly allocated @conn_state and assigns it to | |
6806cdf9 DV |
3269 | * the &drm_conector->state pointer of @connector, usually required when |
3270 | * initializing the drivers or when called from the &drm_connector_funcs.reset | |
3271 | * hook. | |
4cd39917 ML |
3272 | * |
3273 | * This is useful for drivers that subclass the connector state. | |
3274 | */ | |
3275 | void | |
3276 | __drm_atomic_helper_connector_reset(struct drm_connector *connector, | |
3277 | struct drm_connector_state *conn_state) | |
3278 | { | |
3279 | if (conn_state) | |
3280 | conn_state->connector = connector; | |
3281 | ||
3282 | connector->state = conn_state; | |
3283 | } | |
3284 | EXPORT_SYMBOL(__drm_atomic_helper_connector_reset); | |
3285 | ||
d461701c | 3286 | /** |
6806cdf9 | 3287 | * drm_atomic_helper_connector_reset - default &drm_connector_funcs.reset hook for connectors |
d461701c DV |
3288 | * @connector: drm connector |
3289 | * | |
3290 | * Resets the atomic state for @connector by freeing the state pointer (which | |
3291 | * might be NULL, e.g. at driver load time) and allocating a new empty state | |
3292 | * object. | |
3293 | */ | |
3294 | void drm_atomic_helper_connector_reset(struct drm_connector *connector) | |
3295 | { | |
4cd39917 ML |
3296 | struct drm_connector_state *conn_state = |
3297 | kzalloc(sizeof(*conn_state), GFP_KERNEL); | |
07cc0ef6 | 3298 | |
b0b5511b | 3299 | if (connector->state) |
fabd9106 | 3300 | __drm_atomic_helper_connector_destroy_state(connector->state); |
b0b5511b | 3301 | |
4cd39917 ML |
3302 | kfree(connector->state); |
3303 | __drm_atomic_helper_connector_reset(connector, conn_state); | |
d461701c DV |
3304 | } |
3305 | EXPORT_SYMBOL(drm_atomic_helper_connector_reset); | |
3306 | ||
f5e7840b TR |
3307 | /** |
3308 | * __drm_atomic_helper_connector_duplicate_state - copy atomic connector state | |
3309 | * @connector: connector object | |
3310 | * @state: atomic connector state | |
3311 | * | |
3312 | * Copies atomic state from a connector's current state. This is useful for | |
3313 | * drivers that subclass the connector state. | |
3314 | */ | |
3315 | void | |
3316 | __drm_atomic_helper_connector_duplicate_state(struct drm_connector *connector, | |
3317 | struct drm_connector_state *state) | |
3318 | { | |
3319 | memcpy(state, connector->state, sizeof(*state)); | |
d2307dea | 3320 | if (state->crtc) |
ad093607 | 3321 | drm_connector_get(connector); |
f5e7840b TR |
3322 | } |
3323 | EXPORT_SYMBOL(__drm_atomic_helper_connector_duplicate_state); | |
3324 | ||
d461701c DV |
3325 | /** |
3326 | * drm_atomic_helper_connector_duplicate_state - default state duplicate hook | |
3327 | * @connector: drm connector | |
3328 | * | |
3329 | * Default connector state duplicate hook for drivers which don't have their own | |
3330 | * subclassed connector state structure. | |
3331 | */ | |
3332 | struct drm_connector_state * | |
3333 | drm_atomic_helper_connector_duplicate_state(struct drm_connector *connector) | |
3334 | { | |
f5e7840b TR |
3335 | struct drm_connector_state *state; |
3336 | ||
d461701c DV |
3337 | if (WARN_ON(!connector->state)) |
3338 | return NULL; | |
3339 | ||
f5e7840b TR |
3340 | state = kmalloc(sizeof(*state), GFP_KERNEL); |
3341 | if (state) | |
3342 | __drm_atomic_helper_connector_duplicate_state(connector, state); | |
3343 | ||
3344 | return state; | |
d461701c DV |
3345 | } |
3346 | EXPORT_SYMBOL(drm_atomic_helper_connector_duplicate_state); | |
3347 | ||
397fd77c TR |
3348 | /** |
3349 | * drm_atomic_helper_duplicate_state - duplicate an atomic state object | |
3350 | * @dev: DRM device | |
3351 | * @ctx: lock acquisition context | |
3352 | * | |
3353 | * Makes a copy of the current atomic state by looping over all objects and | |
14942760 TR |
3354 | * duplicating their respective states. This is used for example by suspend/ |
3355 | * resume support code to save the state prior to suspend such that it can | |
3356 | * be restored upon resume. | |
397fd77c TR |
3357 | * |
3358 | * Note that this treats atomic state as persistent between save and restore. | |
3359 | * Drivers must make sure that this is possible and won't result in confusion | |
3360 | * or erroneous behaviour. | |
3361 | * | |
3362 | * Note that if callers haven't already acquired all modeset locks this might | |
3363 | * return -EDEADLK, which must be handled by calling drm_modeset_backoff(). | |
3364 | * | |
3365 | * Returns: | |
3366 | * A pointer to the copy of the atomic state object on success or an | |
3367 | * ERR_PTR()-encoded error code on failure. | |
14942760 TR |
3368 | * |
3369 | * See also: | |
3370 | * drm_atomic_helper_suspend(), drm_atomic_helper_resume() | |
397fd77c TR |
3371 | */ |
3372 | struct drm_atomic_state * | |
3373 | drm_atomic_helper_duplicate_state(struct drm_device *dev, | |
3374 | struct drm_modeset_acquire_ctx *ctx) | |
3375 | { | |
3376 | struct drm_atomic_state *state; | |
3377 | struct drm_connector *conn; | |
c36a3254 | 3378 | struct drm_connector_list_iter conn_iter; |
397fd77c TR |
3379 | struct drm_plane *plane; |
3380 | struct drm_crtc *crtc; | |
3381 | int err = 0; | |
3382 | ||
3383 | state = drm_atomic_state_alloc(dev); | |
3384 | if (!state) | |
3385 | return ERR_PTR(-ENOMEM); | |
3386 | ||
3387 | state->acquire_ctx = ctx; | |
3388 | ||
3389 | drm_for_each_crtc(crtc, dev) { | |
3390 | struct drm_crtc_state *crtc_state; | |
3391 | ||
3392 | crtc_state = drm_atomic_get_crtc_state(state, crtc); | |
3393 | if (IS_ERR(crtc_state)) { | |
3394 | err = PTR_ERR(crtc_state); | |
3395 | goto free; | |
3396 | } | |
3397 | } | |
3398 | ||
3399 | drm_for_each_plane(plane, dev) { | |
3400 | struct drm_plane_state *plane_state; | |
3401 | ||
3402 | plane_state = drm_atomic_get_plane_state(state, plane); | |
3403 | if (IS_ERR(plane_state)) { | |
3404 | err = PTR_ERR(plane_state); | |
3405 | goto free; | |
3406 | } | |
3407 | } | |
3408 | ||
b982dab1 | 3409 | drm_connector_list_iter_begin(dev, &conn_iter); |
c36a3254 | 3410 | drm_for_each_connector_iter(conn, &conn_iter) { |
397fd77c TR |
3411 | struct drm_connector_state *conn_state; |
3412 | ||
3413 | conn_state = drm_atomic_get_connector_state(state, conn); | |
3414 | if (IS_ERR(conn_state)) { | |
3415 | err = PTR_ERR(conn_state); | |
b982dab1 | 3416 | drm_connector_list_iter_end(&conn_iter); |
397fd77c TR |
3417 | goto free; |
3418 | } | |
3419 | } | |
b982dab1 | 3420 | drm_connector_list_iter_end(&conn_iter); |
397fd77c TR |
3421 | |
3422 | /* clear the acquire context so that it isn't accidentally reused */ | |
3423 | state->acquire_ctx = NULL; | |
3424 | ||
3425 | free: | |
3426 | if (err < 0) { | |
0853695c | 3427 | drm_atomic_state_put(state); |
397fd77c TR |
3428 | state = ERR_PTR(err); |
3429 | } | |
3430 | ||
3431 | return state; | |
3432 | } | |
3433 | EXPORT_SYMBOL(drm_atomic_helper_duplicate_state); | |
3434 | ||
f5e7840b TR |
3435 | /** |
3436 | * __drm_atomic_helper_connector_destroy_state - release connector state | |
f5e7840b TR |
3437 | * @state: connector state object to release |
3438 | * | |
3439 | * Releases all resources stored in the connector state without actually | |
3440 | * freeing the memory of the connector state. This is useful for drivers that | |
3441 | * subclass the connector state. | |
3442 | */ | |
3443 | void | |
fabd9106 | 3444 | __drm_atomic_helper_connector_destroy_state(struct drm_connector_state *state) |
f5e7840b | 3445 | { |
d2307dea | 3446 | if (state->crtc) |
ad093607 | 3447 | drm_connector_put(state->connector); |
f5e7840b TR |
3448 | } |
3449 | EXPORT_SYMBOL(__drm_atomic_helper_connector_destroy_state); | |
3450 | ||
d461701c DV |
3451 | /** |
3452 | * drm_atomic_helper_connector_destroy_state - default state destroy hook | |
3453 | * @connector: drm connector | |
3454 | * @state: connector state object to release | |
3455 | * | |
3456 | * Default connector state destroy hook for drivers which don't have their own | |
3457 | * subclassed connector state structure. | |
3458 | */ | |
3459 | void drm_atomic_helper_connector_destroy_state(struct drm_connector *connector, | |
3460 | struct drm_connector_state *state) | |
3461 | { | |
fabd9106 | 3462 | __drm_atomic_helper_connector_destroy_state(state); |
d461701c DV |
3463 | kfree(state); |
3464 | } | |
3465 | EXPORT_SYMBOL(drm_atomic_helper_connector_destroy_state); | |
5488dc16 LL |
3466 | |
3467 | /** | |
3468 | * drm_atomic_helper_legacy_gamma_set - set the legacy gamma correction table | |
3469 | * @crtc: CRTC object | |
3470 | * @red: red correction table | |
3471 | * @green: green correction table | |
3472 | * @blue: green correction table | |
5488dc16 LL |
3473 | * @size: size of the tables |
3474 | * | |
3475 | * Implements support for legacy gamma correction table for drivers | |
3476 | * that support color management through the DEGAMMA_LUT/GAMMA_LUT | |
3477 | * properties. | |
3478 | */ | |
7ea77283 ML |
3479 | int drm_atomic_helper_legacy_gamma_set(struct drm_crtc *crtc, |
3480 | u16 *red, u16 *green, u16 *blue, | |
3481 | uint32_t size) | |
5488dc16 LL |
3482 | { |
3483 | struct drm_device *dev = crtc->dev; | |
3484 | struct drm_mode_config *config = &dev->mode_config; | |
3485 | struct drm_atomic_state *state; | |
3486 | struct drm_crtc_state *crtc_state; | |
3487 | struct drm_property_blob *blob = NULL; | |
3488 | struct drm_color_lut *blob_data; | |
3489 | int i, ret = 0; | |
3490 | ||
3491 | state = drm_atomic_state_alloc(crtc->dev); | |
3492 | if (!state) | |
7ea77283 | 3493 | return -ENOMEM; |
5488dc16 LL |
3494 | |
3495 | blob = drm_property_create_blob(dev, | |
3496 | sizeof(struct drm_color_lut) * size, | |
3497 | NULL); | |
562c5b4d LL |
3498 | if (IS_ERR(blob)) { |
3499 | ret = PTR_ERR(blob); | |
c1f415c9 | 3500 | blob = NULL; |
5488dc16 LL |
3501 | goto fail; |
3502 | } | |
3503 | ||
3504 | /* Prepare GAMMA_LUT with the legacy values. */ | |
3505 | blob_data = (struct drm_color_lut *) blob->data; | |
3506 | for (i = 0; i < size; i++) { | |
3507 | blob_data[i].red = red[i]; | |
3508 | blob_data[i].green = green[i]; | |
3509 | blob_data[i].blue = blue[i]; | |
3510 | } | |
3511 | ||
3512 | state->acquire_ctx = crtc->dev->mode_config.acquire_ctx; | |
3513 | retry: | |
3514 | crtc_state = drm_atomic_get_crtc_state(state, crtc); | |
3515 | if (IS_ERR(crtc_state)) { | |
3516 | ret = PTR_ERR(crtc_state); | |
3517 | goto fail; | |
3518 | } | |
3519 | ||
3520 | /* Reset DEGAMMA_LUT and CTM properties. */ | |
3521 | ret = drm_atomic_crtc_set_property(crtc, crtc_state, | |
3522 | config->degamma_lut_property, 0); | |
3523 | if (ret) | |
3524 | goto fail; | |
3525 | ||
3526 | ret = drm_atomic_crtc_set_property(crtc, crtc_state, | |
3527 | config->ctm_property, 0); | |
3528 | if (ret) | |
3529 | goto fail; | |
3530 | ||
3531 | ret = drm_atomic_crtc_set_property(crtc, crtc_state, | |
3532 | config->gamma_lut_property, blob->base.id); | |
3533 | if (ret) | |
3534 | goto fail; | |
3535 | ||
3536 | ret = drm_atomic_commit(state); | |
5488dc16 LL |
3537 | fail: |
3538 | if (ret == -EDEADLK) | |
3539 | goto backoff; | |
3540 | ||
0853695c | 3541 | drm_atomic_state_put(state); |
6472e509 | 3542 | drm_property_blob_put(blob); |
7ea77283 | 3543 | return ret; |
0853695c | 3544 | |
5488dc16 LL |
3545 | backoff: |
3546 | drm_atomic_state_clear(state); | |
3547 | drm_atomic_legacy_backoff(state); | |
3548 | ||
3549 | goto retry; | |
3550 | } | |
3551 | EXPORT_SYMBOL(drm_atomic_helper_legacy_gamma_set); |