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c2fcd274 DV |
1 | /* |
2 | * Copyright (C) 2014 Red Hat | |
3 | * Copyright (C) 2014 Intel Corp. | |
4 | * | |
5 | * Permission is hereby granted, free of charge, to any person obtaining a | |
6 | * copy of this software and associated documentation files (the "Software"), | |
7 | * to deal in the Software without restriction, including without limitation | |
8 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
9 | * and/or sell copies of the Software, and to permit persons to whom the | |
10 | * Software is furnished to do so, subject to the following conditions: | |
11 | * | |
12 | * The above copyright notice and this permission notice shall be included in | |
13 | * all copies or substantial portions of the Software. | |
14 | * | |
15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
18 | * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR | |
19 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, | |
20 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR | |
21 | * OTHER DEALINGS IN THE SOFTWARE. | |
22 | * | |
23 | * Authors: | |
24 | * Rob Clark <robdclark@gmail.com> | |
25 | * Daniel Vetter <daniel.vetter@ffwll.ch> | |
26 | */ | |
27 | ||
0500c04e SR |
28 | #include <linux/dma-fence.h> |
29 | ||
c2fcd274 | 30 | #include <drm/drm_atomic.h> |
0500c04e | 31 | #include <drm/drm_atomic_helper.h> |
72fdb40c | 32 | #include <drm/drm_atomic_uapi.h> |
0500c04e SR |
33 | #include <drm/drm_damage_helper.h> |
34 | #include <drm/drm_device.h> | |
c2fcd274 | 35 | #include <drm/drm_plane_helper.h> |
0500c04e SR |
36 | #include <drm/drm_print.h> |
37 | #include <drm/drm_vblank.h> | |
935774cd | 38 | #include <drm/drm_writeback.h> |
c2fcd274 | 39 | |
faf94a08 | 40 | #include "drm_crtc_helper_internal.h" |
44d1240d MS |
41 | #include "drm_crtc_internal.h" |
42 | ||
3150c7d0 DV |
43 | /** |
44 | * DOC: overview | |
45 | * | |
46 | * This helper library provides implementations of check and commit functions on | |
47 | * top of the CRTC modeset helper callbacks and the plane helper callbacks. It | |
48 | * also provides convenience implementations for the atomic state handling | |
49 | * callbacks for drivers which don't need to subclass the drm core structures to | |
50 | * add their own additional internal state. | |
51 | * | |
52 | * This library also provides default implementations for the check callback in | |
26196f7e DV |
53 | * drm_atomic_helper_check() and for the commit callback with |
54 | * drm_atomic_helper_commit(). But the individual stages and callbacks are | |
55 | * exposed to allow drivers to mix and match and e.g. use the plane helpers only | |
3150c7d0 DV |
56 | * together with a driver private modeset implementation. |
57 | * | |
58 | * This library also provides implementations for all the legacy driver | |
26196f7e DV |
59 | * interfaces on top of the atomic interface. See drm_atomic_helper_set_config(), |
60 | * drm_atomic_helper_disable_plane(), drm_atomic_helper_disable_plane() and the | |
3150c7d0 DV |
61 | * various functions to implement set_property callbacks. New drivers must not |
62 | * implement these functions themselves but must use the provided helpers. | |
092d01da DV |
63 | * |
64 | * The atomic helper uses the same function table structures as all other | |
ea0dd85a DV |
65 | * modesetting helpers. See the documentation for &struct drm_crtc_helper_funcs, |
66 | * struct &drm_encoder_helper_funcs and &struct drm_connector_helper_funcs. It | |
67 | * also shares the &struct drm_plane_helper_funcs function table with the plane | |
092d01da | 68 | * helpers. |
3150c7d0 | 69 | */ |
c2fcd274 DV |
70 | static void |
71 | drm_atomic_helper_plane_changed(struct drm_atomic_state *state, | |
415c3ac3 | 72 | struct drm_plane_state *old_plane_state, |
c2fcd274 DV |
73 | struct drm_plane_state *plane_state, |
74 | struct drm_plane *plane) | |
75 | { | |
76 | struct drm_crtc_state *crtc_state; | |
77 | ||
415c3ac3 | 78 | if (old_plane_state->crtc) { |
b4d93679 ML |
79 | crtc_state = drm_atomic_get_new_crtc_state(state, |
80 | old_plane_state->crtc); | |
c2fcd274 DV |
81 | |
82 | if (WARN_ON(!crtc_state)) | |
83 | return; | |
84 | ||
85 | crtc_state->planes_changed = true; | |
86 | } | |
87 | ||
88 | if (plane_state->crtc) { | |
b4d93679 | 89 | crtc_state = drm_atomic_get_new_crtc_state(state, plane_state->crtc); |
c2fcd274 DV |
90 | |
91 | if (WARN_ON(!crtc_state)) | |
92 | return; | |
93 | ||
94 | crtc_state->planes_changed = true; | |
95 | } | |
96 | } | |
97 | ||
297e30b5 DV |
98 | /* |
99 | * For connectors that support multiple encoders, either the | |
100 | * .atomic_best_encoder() or .best_encoder() operation must be implemented. | |
101 | */ | |
102 | static struct drm_encoder * | |
103 | pick_single_encoder_for_connector(struct drm_connector *connector) | |
104 | { | |
105 | WARN_ON(connector->encoder_ids[1]); | |
106 | return drm_encoder_find(connector->dev, NULL, connector->encoder_ids[0]); | |
107 | } | |
108 | ||
8248b65d ML |
109 | static int handle_conflicting_encoders(struct drm_atomic_state *state, |
110 | bool disable_conflicting_encoders) | |
97ac3204 | 111 | { |
415c3ac3 | 112 | struct drm_connector_state *new_conn_state; |
40616a26 | 113 | struct drm_connector *connector; |
c36a3254 | 114 | struct drm_connector_list_iter conn_iter; |
40616a26 ML |
115 | struct drm_encoder *encoder; |
116 | unsigned encoder_mask = 0; | |
c36a3254 | 117 | int i, ret = 0; |
97ac3204 | 118 | |
8248b65d ML |
119 | /* |
120 | * First loop, find all newly assigned encoders from the connectors | |
121 | * part of the state. If the same encoder is assigned to multiple | |
122 | * connectors bail out. | |
123 | */ | |
415c3ac3 | 124 | for_each_new_connector_in_state(state, connector, new_conn_state, i) { |
40616a26 ML |
125 | const struct drm_connector_helper_funcs *funcs = connector->helper_private; |
126 | struct drm_encoder *new_encoder; | |
127 | ||
415c3ac3 | 128 | if (!new_conn_state->crtc) |
97ac3204 DV |
129 | continue; |
130 | ||
40616a26 | 131 | if (funcs->atomic_best_encoder) |
415c3ac3 | 132 | new_encoder = funcs->atomic_best_encoder(connector, new_conn_state); |
a0909cc5 | 133 | else if (funcs->best_encoder) |
40616a26 | 134 | new_encoder = funcs->best_encoder(connector); |
a0909cc5 | 135 | else |
297e30b5 | 136 | new_encoder = pick_single_encoder_for_connector(connector); |
40616a26 | 137 | |
8248b65d | 138 | if (new_encoder) { |
6f3be036 | 139 | if (encoder_mask & drm_encoder_mask(new_encoder)) { |
8248b65d ML |
140 | DRM_DEBUG_ATOMIC("[ENCODER:%d:%s] on [CONNECTOR:%d:%s] already assigned\n", |
141 | new_encoder->base.id, new_encoder->name, | |
142 | connector->base.id, connector->name); | |
143 | ||
144 | return -EINVAL; | |
145 | } | |
146 | ||
6f3be036 | 147 | encoder_mask |= drm_encoder_mask(new_encoder); |
8248b65d | 148 | } |
97ac3204 DV |
149 | } |
150 | ||
8248b65d ML |
151 | if (!encoder_mask) |
152 | return 0; | |
97ac3204 | 153 | |
8248b65d ML |
154 | /* |
155 | * Second loop, iterate over all connectors not part of the state. | |
156 | * | |
157 | * If a conflicting encoder is found and disable_conflicting_encoders | |
158 | * is not set, an error is returned. Userspace can provide a solution | |
159 | * through the atomic ioctl. | |
160 | * | |
161 | * If the flag is set conflicting connectors are removed from the crtc | |
162 | * and the crtc is disabled if no encoder is left. This preserves | |
163 | * compatibility with the legacy set_config behavior. | |
164 | */ | |
b982dab1 | 165 | drm_connector_list_iter_begin(state->dev, &conn_iter); |
c36a3254 | 166 | drm_for_each_connector_iter(connector, &conn_iter) { |
40616a26 | 167 | struct drm_crtc_state *crtc_state; |
623369e5 | 168 | |
b4d93679 | 169 | if (drm_atomic_get_new_connector_state(state, connector)) |
40616a26 | 170 | continue; |
623369e5 | 171 | |
40616a26 | 172 | encoder = connector->state->best_encoder; |
6f3be036 | 173 | if (!encoder || !(encoder_mask & drm_encoder_mask(encoder))) |
623369e5 DV |
174 | continue; |
175 | ||
8248b65d ML |
176 | if (!disable_conflicting_encoders) { |
177 | DRM_DEBUG_ATOMIC("[ENCODER:%d:%s] in use on [CRTC:%d:%s] by [CONNECTOR:%d:%s]\n", | |
178 | encoder->base.id, encoder->name, | |
179 | connector->state->crtc->base.id, | |
180 | connector->state->crtc->name, | |
181 | connector->base.id, connector->name); | |
c36a3254 DV |
182 | ret = -EINVAL; |
183 | goto out; | |
8248b65d ML |
184 | } |
185 | ||
415c3ac3 ML |
186 | new_conn_state = drm_atomic_get_connector_state(state, connector); |
187 | if (IS_ERR(new_conn_state)) { | |
188 | ret = PTR_ERR(new_conn_state); | |
c36a3254 DV |
189 | goto out; |
190 | } | |
40616a26 ML |
191 | |
192 | DRM_DEBUG_ATOMIC("[ENCODER:%d:%s] in use on [CRTC:%d:%s], disabling [CONNECTOR:%d:%s]\n", | |
193 | encoder->base.id, encoder->name, | |
415c3ac3 | 194 | new_conn_state->crtc->base.id, new_conn_state->crtc->name, |
40616a26 ML |
195 | connector->base.id, connector->name); |
196 | ||
b4d93679 | 197 | crtc_state = drm_atomic_get_new_crtc_state(state, new_conn_state->crtc); |
40616a26 | 198 | |
415c3ac3 | 199 | ret = drm_atomic_set_crtc_for_connector(new_conn_state, NULL); |
40616a26 | 200 | if (ret) |
c36a3254 | 201 | goto out; |
40616a26 ML |
202 | |
203 | if (!crtc_state->connector_mask) { | |
204 | ret = drm_atomic_set_mode_prop_for_crtc(crtc_state, | |
205 | NULL); | |
206 | if (ret < 0) | |
c36a3254 | 207 | goto out; |
40616a26 ML |
208 | |
209 | crtc_state->active = false; | |
210 | } | |
623369e5 | 211 | } |
c36a3254 | 212 | out: |
b982dab1 | 213 | drm_connector_list_iter_end(&conn_iter); |
623369e5 | 214 | |
c36a3254 | 215 | return ret; |
623369e5 DV |
216 | } |
217 | ||
e87a52b3 ML |
218 | static void |
219 | set_best_encoder(struct drm_atomic_state *state, | |
220 | struct drm_connector_state *conn_state, | |
221 | struct drm_encoder *encoder) | |
222 | { | |
223 | struct drm_crtc_state *crtc_state; | |
224 | struct drm_crtc *crtc; | |
225 | ||
226 | if (conn_state->best_encoder) { | |
227 | /* Unset the encoder_mask in the old crtc state. */ | |
228 | crtc = conn_state->connector->state->crtc; | |
229 | ||
230 | /* A NULL crtc is an error here because we should have | |
231 | * duplicated a NULL best_encoder when crtc was NULL. | |
232 | * As an exception restoring duplicated atomic state | |
233 | * during resume is allowed, so don't warn when | |
234 | * best_encoder is equal to encoder we intend to set. | |
235 | */ | |
236 | WARN_ON(!crtc && encoder != conn_state->best_encoder); | |
237 | if (crtc) { | |
b4d93679 | 238 | crtc_state = drm_atomic_get_new_crtc_state(state, crtc); |
e87a52b3 ML |
239 | |
240 | crtc_state->encoder_mask &= | |
6f3be036 | 241 | ~drm_encoder_mask(conn_state->best_encoder); |
e87a52b3 ML |
242 | } |
243 | } | |
244 | ||
245 | if (encoder) { | |
246 | crtc = conn_state->crtc; | |
247 | WARN_ON(!crtc); | |
248 | if (crtc) { | |
b4d93679 | 249 | crtc_state = drm_atomic_get_new_crtc_state(state, crtc); |
e87a52b3 ML |
250 | |
251 | crtc_state->encoder_mask |= | |
6f3be036 | 252 | drm_encoder_mask(encoder); |
e87a52b3 ML |
253 | } |
254 | } | |
255 | ||
256 | conn_state->best_encoder = encoder; | |
257 | } | |
258 | ||
ec5aaa58 | 259 | static void |
623369e5 | 260 | steal_encoder(struct drm_atomic_state *state, |
ff19b786 | 261 | struct drm_encoder *encoder) |
623369e5 | 262 | { |
623369e5 DV |
263 | struct drm_crtc_state *crtc_state; |
264 | struct drm_connector *connector; | |
415c3ac3 | 265 | struct drm_connector_state *old_connector_state, *new_connector_state; |
ec5aaa58 | 266 | int i; |
623369e5 | 267 | |
415c3ac3 | 268 | for_each_oldnew_connector_in_state(state, connector, old_connector_state, new_connector_state, i) { |
ff19b786 | 269 | struct drm_crtc *encoder_crtc; |
623369e5 | 270 | |
415c3ac3 | 271 | if (new_connector_state->best_encoder != encoder) |
623369e5 DV |
272 | continue; |
273 | ||
415c3ac3 | 274 | encoder_crtc = old_connector_state->crtc; |
623369e5 | 275 | |
ff19b786 ML |
276 | DRM_DEBUG_ATOMIC("[ENCODER:%d:%s] in use on [CRTC:%d:%s], stealing it\n", |
277 | encoder->base.id, encoder->name, | |
278 | encoder_crtc->base.id, encoder_crtc->name); | |
e87a52b3 | 279 | |
415c3ac3 | 280 | set_best_encoder(state, new_connector_state, NULL); |
623369e5 | 281 | |
b4d93679 | 282 | crtc_state = drm_atomic_get_new_crtc_state(state, encoder_crtc); |
ff19b786 ML |
283 | crtc_state->connectors_changed = true; |
284 | ||
ec5aaa58 | 285 | return; |
623369e5 | 286 | } |
623369e5 DV |
287 | } |
288 | ||
289 | static int | |
9459545b ML |
290 | update_connector_routing(struct drm_atomic_state *state, |
291 | struct drm_connector *connector, | |
415c3ac3 ML |
292 | struct drm_connector_state *old_connector_state, |
293 | struct drm_connector_state *new_connector_state) | |
623369e5 | 294 | { |
b5ceff20 | 295 | const struct drm_connector_helper_funcs *funcs; |
623369e5 | 296 | struct drm_encoder *new_encoder; |
623369e5 | 297 | struct drm_crtc_state *crtc_state; |
623369e5 | 298 | |
17a38d9c DV |
299 | DRM_DEBUG_ATOMIC("Updating routing for [CONNECTOR:%d:%s]\n", |
300 | connector->base.id, | |
301 | connector->name); | |
623369e5 | 302 | |
415c3ac3 ML |
303 | if (old_connector_state->crtc != new_connector_state->crtc) { |
304 | if (old_connector_state->crtc) { | |
b4d93679 | 305 | crtc_state = drm_atomic_get_new_crtc_state(state, old_connector_state->crtc); |
fc596660 | 306 | crtc_state->connectors_changed = true; |
623369e5 DV |
307 | } |
308 | ||
415c3ac3 | 309 | if (new_connector_state->crtc) { |
b4d93679 | 310 | crtc_state = drm_atomic_get_new_crtc_state(state, new_connector_state->crtc); |
fc596660 | 311 | crtc_state->connectors_changed = true; |
623369e5 DV |
312 | } |
313 | } | |
314 | ||
415c3ac3 | 315 | if (!new_connector_state->crtc) { |
17a38d9c | 316 | DRM_DEBUG_ATOMIC("Disabling [CONNECTOR:%d:%s]\n", |
623369e5 DV |
317 | connector->base.id, |
318 | connector->name); | |
319 | ||
415c3ac3 | 320 | set_best_encoder(state, new_connector_state, NULL); |
623369e5 DV |
321 | |
322 | return 0; | |
323 | } | |
324 | ||
de9f8eea LP |
325 | crtc_state = drm_atomic_get_new_crtc_state(state, |
326 | new_connector_state->crtc); | |
327 | /* | |
328 | * For compatibility with legacy users, we want to make sure that | |
329 | * we allow DPMS On->Off modesets on unregistered connectors. Modesets | |
330 | * which would result in anything else must be considered invalid, to | |
331 | * avoid turning on new displays on dead connectors. | |
332 | * | |
333 | * Since the connector can be unregistered at any point during an | |
334 | * atomic check or commit, this is racy. But that's OK: all we care | |
335 | * about is ensuring that userspace can't do anything but shut off the | |
1e55a53a | 336 | * display on a connector that was destroyed after it's been notified, |
de9f8eea | 337 | * not before. |
022debad LP |
338 | * |
339 | * Additionally, we also want to ignore connector registration when | |
340 | * we're trying to restore an atomic state during system resume since | |
341 | * there's a chance the connector may have been destroyed during the | |
342 | * process, but it's better to ignore that then cause | |
343 | * drm_atomic_helper_resume() to fail. | |
de9f8eea | 344 | */ |
022debad LP |
345 | if (!state->duplicated && drm_connector_is_unregistered(connector) && |
346 | crtc_state->active) { | |
de9f8eea LP |
347 | DRM_DEBUG_ATOMIC("[CONNECTOR:%d:%s] is not registered\n", |
348 | connector->base.id, connector->name); | |
349 | return -EINVAL; | |
350 | } | |
351 | ||
623369e5 | 352 | funcs = connector->helper_private; |
3b8a684b DV |
353 | |
354 | if (funcs->atomic_best_encoder) | |
355 | new_encoder = funcs->atomic_best_encoder(connector, | |
415c3ac3 | 356 | new_connector_state); |
c61b93fe | 357 | else if (funcs->best_encoder) |
3b8a684b | 358 | new_encoder = funcs->best_encoder(connector); |
c61b93fe | 359 | else |
297e30b5 | 360 | new_encoder = pick_single_encoder_for_connector(connector); |
623369e5 DV |
361 | |
362 | if (!new_encoder) { | |
17a38d9c DV |
363 | DRM_DEBUG_ATOMIC("No suitable encoder found for [CONNECTOR:%d:%s]\n", |
364 | connector->base.id, | |
365 | connector->name); | |
623369e5 DV |
366 | return -EINVAL; |
367 | } | |
368 | ||
415c3ac3 | 369 | if (!drm_encoder_crtc_ok(new_encoder, new_connector_state->crtc)) { |
6ac7c548 | 370 | DRM_DEBUG_ATOMIC("[ENCODER:%d:%s] incompatible with [CRTC:%d:%s]\n", |
5481c8fb DV |
371 | new_encoder->base.id, |
372 | new_encoder->name, | |
415c3ac3 ML |
373 | new_connector_state->crtc->base.id, |
374 | new_connector_state->crtc->name); | |
5481c8fb DV |
375 | return -EINVAL; |
376 | } | |
377 | ||
415c3ac3 ML |
378 | if (new_encoder == new_connector_state->best_encoder) { |
379 | set_best_encoder(state, new_connector_state, new_encoder); | |
e87a52b3 | 380 | |
fa3ab4c2 | 381 | DRM_DEBUG_ATOMIC("[CONNECTOR:%d:%s] keeps [ENCODER:%d:%s], now on [CRTC:%d:%s]\n", |
17a38d9c DV |
382 | connector->base.id, |
383 | connector->name, | |
384 | new_encoder->base.id, | |
385 | new_encoder->name, | |
415c3ac3 ML |
386 | new_connector_state->crtc->base.id, |
387 | new_connector_state->crtc->name); | |
623369e5 DV |
388 | |
389 | return 0; | |
390 | } | |
391 | ||
ec5aaa58 | 392 | steal_encoder(state, new_encoder); |
6ea76f3c | 393 | |
415c3ac3 | 394 | set_best_encoder(state, new_connector_state, new_encoder); |
e87a52b3 | 395 | |
fc596660 | 396 | crtc_state->connectors_changed = true; |
623369e5 | 397 | |
fa3ab4c2 | 398 | DRM_DEBUG_ATOMIC("[CONNECTOR:%d:%s] using [ENCODER:%d:%s] on [CRTC:%d:%s]\n", |
17a38d9c DV |
399 | connector->base.id, |
400 | connector->name, | |
401 | new_encoder->base.id, | |
402 | new_encoder->name, | |
415c3ac3 ML |
403 | new_connector_state->crtc->base.id, |
404 | new_connector_state->crtc->name); | |
623369e5 DV |
405 | |
406 | return 0; | |
407 | } | |
408 | ||
409 | static int | |
410 | mode_fixup(struct drm_atomic_state *state) | |
411 | { | |
df63b999 | 412 | struct drm_crtc *crtc; |
415c3ac3 | 413 | struct drm_crtc_state *new_crtc_state; |
df63b999 | 414 | struct drm_connector *connector; |
415c3ac3 | 415 | struct drm_connector_state *new_conn_state; |
623369e5 | 416 | int i; |
f9ad86e4 | 417 | int ret; |
623369e5 | 418 | |
415c3ac3 ML |
419 | for_each_new_crtc_in_state(state, crtc, new_crtc_state, i) { |
420 | if (!new_crtc_state->mode_changed && | |
421 | !new_crtc_state->connectors_changed) | |
623369e5 DV |
422 | continue; |
423 | ||
415c3ac3 | 424 | drm_mode_copy(&new_crtc_state->adjusted_mode, &new_crtc_state->mode); |
623369e5 DV |
425 | } |
426 | ||
415c3ac3 | 427 | for_each_new_connector_in_state(state, connector, new_conn_state, i) { |
b5ceff20 | 428 | const struct drm_encoder_helper_funcs *funcs; |
623369e5 DV |
429 | struct drm_encoder *encoder; |
430 | ||
415c3ac3 | 431 | WARN_ON(!!new_conn_state->best_encoder != !!new_conn_state->crtc); |
623369e5 | 432 | |
415c3ac3 | 433 | if (!new_conn_state->crtc || !new_conn_state->best_encoder) |
623369e5 DV |
434 | continue; |
435 | ||
415c3ac3 | 436 | new_crtc_state = |
b4d93679 | 437 | drm_atomic_get_new_crtc_state(state, new_conn_state->crtc); |
623369e5 DV |
438 | |
439 | /* | |
440 | * Each encoder has at most one connector (since we always steal | |
441 | * it away), so we won't call ->mode_fixup twice. | |
442 | */ | |
415c3ac3 | 443 | encoder = new_conn_state->best_encoder; |
623369e5 DV |
444 | funcs = encoder->helper_private; |
445 | ||
415c3ac3 ML |
446 | ret = drm_bridge_mode_fixup(encoder->bridge, &new_crtc_state->mode, |
447 | &new_crtc_state->adjusted_mode); | |
862e686c AT |
448 | if (!ret) { |
449 | DRM_DEBUG_ATOMIC("Bridge fixup failed\n"); | |
450 | return -EINVAL; | |
623369e5 DV |
451 | } |
452 | ||
2827635e | 453 | if (funcs && funcs->atomic_check) { |
415c3ac3 ML |
454 | ret = funcs->atomic_check(encoder, new_crtc_state, |
455 | new_conn_state); | |
4cd4df80 | 456 | if (ret) { |
17a38d9c DV |
457 | DRM_DEBUG_ATOMIC("[ENCODER:%d:%s] check failed\n", |
458 | encoder->base.id, encoder->name); | |
4cd4df80 TR |
459 | return ret; |
460 | } | |
2827635e | 461 | } else if (funcs && funcs->mode_fixup) { |
415c3ac3 ML |
462 | ret = funcs->mode_fixup(encoder, &new_crtc_state->mode, |
463 | &new_crtc_state->adjusted_mode); | |
4cd4df80 | 464 | if (!ret) { |
17a38d9c DV |
465 | DRM_DEBUG_ATOMIC("[ENCODER:%d:%s] fixup failed\n", |
466 | encoder->base.id, encoder->name); | |
4cd4df80 TR |
467 | return -EINVAL; |
468 | } | |
623369e5 DV |
469 | } |
470 | } | |
471 | ||
415c3ac3 | 472 | for_each_new_crtc_in_state(state, crtc, new_crtc_state, i) { |
b5ceff20 | 473 | const struct drm_crtc_helper_funcs *funcs; |
623369e5 | 474 | |
415c3ac3 | 475 | if (!new_crtc_state->enable) |
f55f1701 LY |
476 | continue; |
477 | ||
415c3ac3 ML |
478 | if (!new_crtc_state->mode_changed && |
479 | !new_crtc_state->connectors_changed) | |
623369e5 DV |
480 | continue; |
481 | ||
482 | funcs = crtc->helper_private; | |
840bfe95 ACO |
483 | if (!funcs->mode_fixup) |
484 | continue; | |
485 | ||
415c3ac3 ML |
486 | ret = funcs->mode_fixup(crtc, &new_crtc_state->mode, |
487 | &new_crtc_state->adjusted_mode); | |
623369e5 | 488 | if (!ret) { |
fa3ab4c2 VS |
489 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] fixup failed\n", |
490 | crtc->base.id, crtc->name); | |
623369e5 DV |
491 | return -EINVAL; |
492 | } | |
493 | } | |
494 | ||
495 | return 0; | |
496 | } | |
497 | ||
faf94a08 JA |
498 | static enum drm_mode_status mode_valid_path(struct drm_connector *connector, |
499 | struct drm_encoder *encoder, | |
500 | struct drm_crtc *crtc, | |
8518f05a | 501 | const struct drm_display_mode *mode) |
faf94a08 JA |
502 | { |
503 | enum drm_mode_status ret; | |
504 | ||
505 | ret = drm_encoder_mode_valid(encoder, mode); | |
506 | if (ret != MODE_OK) { | |
507 | DRM_DEBUG_ATOMIC("[ENCODER:%d:%s] mode_valid() failed\n", | |
508 | encoder->base.id, encoder->name); | |
509 | return ret; | |
510 | } | |
511 | ||
512 | ret = drm_bridge_mode_valid(encoder->bridge, mode); | |
513 | if (ret != MODE_OK) { | |
514 | DRM_DEBUG_ATOMIC("[BRIDGE] mode_valid() failed\n"); | |
515 | return ret; | |
516 | } | |
517 | ||
518 | ret = drm_crtc_mode_valid(crtc, mode); | |
519 | if (ret != MODE_OK) { | |
520 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] mode_valid() failed\n", | |
521 | crtc->base.id, crtc->name); | |
522 | return ret; | |
523 | } | |
524 | ||
525 | return ret; | |
526 | } | |
527 | ||
528 | static int | |
529 | mode_valid(struct drm_atomic_state *state) | |
530 | { | |
531 | struct drm_connector_state *conn_state; | |
532 | struct drm_connector *connector; | |
533 | int i; | |
534 | ||
535 | for_each_new_connector_in_state(state, connector, conn_state, i) { | |
536 | struct drm_encoder *encoder = conn_state->best_encoder; | |
537 | struct drm_crtc *crtc = conn_state->crtc; | |
538 | struct drm_crtc_state *crtc_state; | |
539 | enum drm_mode_status mode_status; | |
8518f05a | 540 | const struct drm_display_mode *mode; |
faf94a08 JA |
541 | |
542 | if (!crtc || !encoder) | |
543 | continue; | |
544 | ||
545 | crtc_state = drm_atomic_get_new_crtc_state(state, crtc); | |
546 | if (!crtc_state) | |
547 | continue; | |
548 | if (!crtc_state->mode_changed && !crtc_state->connectors_changed) | |
549 | continue; | |
550 | ||
551 | mode = &crtc_state->mode; | |
552 | ||
553 | mode_status = mode_valid_path(connector, encoder, crtc, mode); | |
554 | if (mode_status != MODE_OK) | |
555 | return -EINVAL; | |
556 | } | |
557 | ||
558 | return 0; | |
559 | } | |
560 | ||
d9b13620 | 561 | /** |
f98bd3ef | 562 | * drm_atomic_helper_check_modeset - validate state object for modeset changes |
d9b13620 DV |
563 | * @dev: DRM device |
564 | * @state: the driver state object | |
565 | * | |
566 | * Check the state object to see if the requested state is physically possible. | |
567 | * This does all the crtc and connector related computations for an atomic | |
ce09d766 ML |
568 | * update and adds any additional connectors needed for full modesets. It calls |
569 | * the various per-object callbacks in the follow order: | |
570 | * | |
571 | * 1. &drm_connector_helper_funcs.atomic_best_encoder for determining the new encoder. | |
572 | * 2. &drm_connector_helper_funcs.atomic_check to validate the connector state. | |
573 | * 3. If it's determined a modeset is needed then all connectors on the affected crtc | |
574 | * crtc are added and &drm_connector_helper_funcs.atomic_check is run on them. | |
faf94a08 JA |
575 | * 4. &drm_encoder_helper_funcs.mode_valid, &drm_bridge_funcs.mode_valid and |
576 | * &drm_crtc_helper_funcs.mode_valid are called on the affected components. | |
577 | * 5. &drm_bridge_funcs.mode_fixup is called on all encoder bridges. | |
578 | * 6. &drm_encoder_helper_funcs.atomic_check is called to validate any encoder state. | |
ce09d766 ML |
579 | * This function is only called when the encoder will be part of a configured crtc, |
580 | * it must not be used for implementing connector property validation. | |
581 | * If this function is NULL, &drm_atomic_encoder_helper_funcs.mode_fixup is called | |
582 | * instead. | |
faf94a08 | 583 | * 7. &drm_crtc_helper_funcs.mode_fixup is called last, to fix up the mode with crtc constraints. |
6806cdf9 DV |
584 | * |
585 | * &drm_crtc_state.mode_changed is set when the input mode is changed. | |
586 | * &drm_crtc_state.connectors_changed is set when a connector is added or | |
587 | * removed from the crtc. &drm_crtc_state.active_changed is set when | |
588 | * &drm_crtc_state.active changes, which is used for DPMS. | |
d807ed1c | 589 | * See also: drm_atomic_crtc_needs_modeset() |
d9b13620 DV |
590 | * |
591 | * IMPORTANT: | |
592 | * | |
6806cdf9 DV |
593 | * Drivers which set &drm_crtc_state.mode_changed (e.g. in their |
594 | * &drm_plane_helper_funcs.atomic_check hooks if a plane update can't be done | |
595 | * without a full modeset) _must_ call this function afterwards after that | |
596 | * change. It is permitted to call this function multiple times for the same | |
597 | * update, e.g. when the &drm_crtc_helper_funcs.atomic_check functions depend | |
598 | * upon the adjusted dotclock for fifo space allocation and watermark | |
599 | * computation. | |
d9b13620 | 600 | * |
c39032a8 | 601 | * RETURNS: |
d9b13620 DV |
602 | * Zero for success or -errno |
603 | */ | |
604 | int | |
934ce1c2 | 605 | drm_atomic_helper_check_modeset(struct drm_device *dev, |
623369e5 DV |
606 | struct drm_atomic_state *state) |
607 | { | |
623369e5 | 608 | struct drm_crtc *crtc; |
415c3ac3 | 609 | struct drm_crtc_state *old_crtc_state, *new_crtc_state; |
df63b999 | 610 | struct drm_connector *connector; |
415c3ac3 | 611 | struct drm_connector_state *old_connector_state, *new_connector_state; |
623369e5 | 612 | int i, ret; |
ce09d766 | 613 | unsigned connectors_mask = 0; |
623369e5 | 614 | |
415c3ac3 | 615 | for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) { |
970ece83 ML |
616 | bool has_connectors = |
617 | !!new_crtc_state->connector_mask; | |
618 | ||
869e188a DV |
619 | WARN_ON(!drm_modeset_is_locked(&crtc->mutex)); |
620 | ||
415c3ac3 | 621 | if (!drm_mode_equal(&old_crtc_state->mode, &new_crtc_state->mode)) { |
fa3ab4c2 VS |
622 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] mode changed\n", |
623 | crtc->base.id, crtc->name); | |
415c3ac3 | 624 | new_crtc_state->mode_changed = true; |
623369e5 DV |
625 | } |
626 | ||
415c3ac3 | 627 | if (old_crtc_state->enable != new_crtc_state->enable) { |
fa3ab4c2 VS |
628 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] enable changed\n", |
629 | crtc->base.id, crtc->name); | |
fc596660 ML |
630 | |
631 | /* | |
632 | * For clarity this assignment is done here, but | |
633 | * enable == 0 is only true when there are no | |
634 | * connectors and a NULL mode. | |
635 | * | |
636 | * The other way around is true as well. enable != 0 | |
637 | * iff connectors are attached and a mode is set. | |
638 | */ | |
415c3ac3 ML |
639 | new_crtc_state->mode_changed = true; |
640 | new_crtc_state->connectors_changed = true; | |
623369e5 | 641 | } |
24d6652c ML |
642 | |
643 | if (old_crtc_state->active != new_crtc_state->active) { | |
644 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] active changed\n", | |
645 | crtc->base.id, crtc->name); | |
646 | new_crtc_state->active_changed = true; | |
647 | } | |
970ece83 ML |
648 | |
649 | if (new_crtc_state->enable != has_connectors) { | |
650 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] enabled/connectors mismatch\n", | |
651 | crtc->base.id, crtc->name); | |
652 | ||
653 | return -EINVAL; | |
654 | } | |
623369e5 DV |
655 | } |
656 | ||
44596b8c | 657 | ret = handle_conflicting_encoders(state, false); |
8248b65d ML |
658 | if (ret) |
659 | return ret; | |
40616a26 | 660 | |
415c3ac3 | 661 | for_each_oldnew_connector_in_state(state, connector, old_connector_state, new_connector_state, i) { |
ce09d766 ML |
662 | const struct drm_connector_helper_funcs *funcs = connector->helper_private; |
663 | ||
869e188a DV |
664 | WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex)); |
665 | ||
623369e5 | 666 | /* |
d807ed1c BS |
667 | * This only sets crtc->connectors_changed for routing changes, |
668 | * drivers must set crtc->connectors_changed themselves when | |
669 | * connector properties need to be updated. | |
623369e5 | 670 | */ |
9459545b | 671 | ret = update_connector_routing(state, connector, |
415c3ac3 ML |
672 | old_connector_state, |
673 | new_connector_state); | |
623369e5 DV |
674 | if (ret) |
675 | return ret; | |
415c3ac3 | 676 | if (old_connector_state->crtc) { |
b4d93679 ML |
677 | new_crtc_state = drm_atomic_get_new_crtc_state(state, |
678 | old_connector_state->crtc); | |
415c3ac3 ML |
679 | if (old_connector_state->link_status != |
680 | new_connector_state->link_status) | |
681 | new_crtc_state->connectors_changed = true; | |
47e22ff1 RS |
682 | |
683 | if (old_connector_state->max_requested_bpc != | |
684 | new_connector_state->max_requested_bpc) | |
685 | new_crtc_state->connectors_changed = true; | |
40ee6fbe | 686 | } |
ce09d766 ML |
687 | |
688 | if (funcs->atomic_check) | |
6f3b6278 | 689 | ret = funcs->atomic_check(connector, state); |
ce09d766 ML |
690 | if (ret) |
691 | return ret; | |
692 | ||
ca52bea9 | 693 | connectors_mask |= BIT(i); |
623369e5 DV |
694 | } |
695 | ||
696 | /* | |
697 | * After all the routing has been prepared we need to add in any | |
1e55a53a | 698 | * connector which is itself unchanged, but whose crtc changes its |
623369e5 DV |
699 | * configuration. This must be done before calling mode_fixup in case a |
700 | * crtc only changed its mode but has the same set of connectors. | |
701 | */ | |
415c3ac3 | 702 | for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) { |
415c3ac3 | 703 | if (!drm_atomic_crtc_needs_modeset(new_crtc_state)) |
623369e5 DV |
704 | continue; |
705 | ||
fa3ab4c2 VS |
706 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] needs all connectors, enable: %c, active: %c\n", |
707 | crtc->base.id, crtc->name, | |
415c3ac3 ML |
708 | new_crtc_state->enable ? 'y' : 'n', |
709 | new_crtc_state->active ? 'y' : 'n'); | |
623369e5 DV |
710 | |
711 | ret = drm_atomic_add_affected_connectors(state, crtc); | |
712 | if (ret != 0) | |
713 | return ret; | |
714 | ||
57744aa7 ML |
715 | ret = drm_atomic_add_affected_planes(state, crtc); |
716 | if (ret != 0) | |
717 | return ret; | |
623369e5 DV |
718 | } |
719 | ||
ce09d766 ML |
720 | /* |
721 | * Iterate over all connectors again, to make sure atomic_check() | |
722 | * has been called on them when a modeset is forced. | |
723 | */ | |
724 | for_each_oldnew_connector_in_state(state, connector, old_connector_state, new_connector_state, i) { | |
725 | const struct drm_connector_helper_funcs *funcs = connector->helper_private; | |
726 | ||
727 | if (connectors_mask & BIT(i)) | |
728 | continue; | |
729 | ||
730 | if (funcs->atomic_check) | |
6f3b6278 | 731 | ret = funcs->atomic_check(connector, state); |
ce09d766 ML |
732 | if (ret) |
733 | return ret; | |
734 | } | |
735 | ||
faf94a08 JA |
736 | ret = mode_valid(state); |
737 | if (ret) | |
738 | return ret; | |
739 | ||
623369e5 DV |
740 | return mode_fixup(state); |
741 | } | |
d9b13620 | 742 | EXPORT_SYMBOL(drm_atomic_helper_check_modeset); |
623369e5 | 743 | |
a01cb8ba VS |
744 | /** |
745 | * drm_atomic_helper_check_plane_state() - Check plane state for validity | |
746 | * @plane_state: plane state to check | |
747 | * @crtc_state: crtc state to check | |
a01cb8ba VS |
748 | * @min_scale: minimum @src:@dest scaling factor in 16.16 fixed point |
749 | * @max_scale: maximum @src:@dest scaling factor in 16.16 fixed point | |
750 | * @can_position: is it legal to position the plane such that it | |
751 | * doesn't cover the entire crtc? This will generally | |
752 | * only be false for primary planes. | |
753 | * @can_update_disabled: can the plane be updated while the crtc | |
754 | * is disabled? | |
755 | * | |
756 | * Checks that a desired plane update is valid, and updates various | |
757 | * bits of derived state (clipped coordinates etc.). Drivers that provide | |
758 | * their own plane handling rather than helper-provided implementations may | |
759 | * still wish to call this function to avoid duplication of error checking | |
760 | * code. | |
761 | * | |
762 | * RETURNS: | |
763 | * Zero if update appears valid, error code on failure | |
764 | */ | |
765 | int drm_atomic_helper_check_plane_state(struct drm_plane_state *plane_state, | |
766 | const struct drm_crtc_state *crtc_state, | |
a01cb8ba VS |
767 | int min_scale, |
768 | int max_scale, | |
769 | bool can_position, | |
770 | bool can_update_disabled) | |
771 | { | |
772 | struct drm_framebuffer *fb = plane_state->fb; | |
773 | struct drm_rect *src = &plane_state->src; | |
774 | struct drm_rect *dst = &plane_state->dst; | |
775 | unsigned int rotation = plane_state->rotation; | |
81af63a4 | 776 | struct drm_rect clip = {}; |
a01cb8ba VS |
777 | int hscale, vscale; |
778 | ||
779 | WARN_ON(plane_state->crtc && plane_state->crtc != crtc_state->crtc); | |
780 | ||
781 | *src = drm_plane_state_src(plane_state); | |
782 | *dst = drm_plane_state_dest(plane_state); | |
783 | ||
784 | if (!fb) { | |
785 | plane_state->visible = false; | |
786 | return 0; | |
787 | } | |
788 | ||
789 | /* crtc should only be NULL when disabling (i.e., !fb) */ | |
790 | if (WARN_ON(!plane_state->crtc)) { | |
791 | plane_state->visible = false; | |
792 | return 0; | |
793 | } | |
794 | ||
795 | if (!crtc_state->enable && !can_update_disabled) { | |
796 | DRM_DEBUG_KMS("Cannot update plane of a disabled CRTC.\n"); | |
797 | return -EINVAL; | |
798 | } | |
799 | ||
800 | drm_rect_rotate(src, fb->width << 16, fb->height << 16, rotation); | |
801 | ||
802 | /* Check scaling */ | |
803 | hscale = drm_rect_calc_hscale(src, dst, min_scale, max_scale); | |
804 | vscale = drm_rect_calc_vscale(src, dst, min_scale, max_scale); | |
805 | if (hscale < 0 || vscale < 0) { | |
806 | DRM_DEBUG_KMS("Invalid scaling of plane\n"); | |
807 | drm_rect_debug_print("src: ", &plane_state->src, true); | |
808 | drm_rect_debug_print("dst: ", &plane_state->dst, false); | |
809 | return -ERANGE; | |
810 | } | |
811 | ||
81af63a4 VS |
812 | if (crtc_state->enable) |
813 | drm_mode_get_hv_timing(&crtc_state->mode, &clip.x2, &clip.y2); | |
814 | ||
f96bdf56 | 815 | plane_state->visible = drm_rect_clip_scaled(src, dst, &clip); |
a01cb8ba VS |
816 | |
817 | drm_rect_rotate_inv(src, fb->width << 16, fb->height << 16, rotation); | |
818 | ||
819 | if (!plane_state->visible) | |
820 | /* | |
821 | * Plane isn't visible; some drivers can handle this | |
822 | * so we just return success here. Drivers that can't | |
823 | * (including those that use the primary plane helper's | |
824 | * update function) will return an error from their | |
825 | * update_plane handler. | |
826 | */ | |
827 | return 0; | |
828 | ||
81af63a4 | 829 | if (!can_position && !drm_rect_equals(dst, &clip)) { |
a01cb8ba VS |
830 | DRM_DEBUG_KMS("Plane must cover entire CRTC\n"); |
831 | drm_rect_debug_print("dst: ", dst, false); | |
81af63a4 | 832 | drm_rect_debug_print("clip: ", &clip, false); |
a01cb8ba VS |
833 | return -EINVAL; |
834 | } | |
835 | ||
836 | return 0; | |
837 | } | |
838 | EXPORT_SYMBOL(drm_atomic_helper_check_plane_state); | |
839 | ||
c2fcd274 | 840 | /** |
f98bd3ef | 841 | * drm_atomic_helper_check_planes - validate state object for planes changes |
c2fcd274 DV |
842 | * @dev: DRM device |
843 | * @state: the driver state object | |
844 | * | |
845 | * Check the state object to see if the requested state is physically possible. | |
d9b13620 | 846 | * This does all the plane update related checks using by calling into the |
6806cdf9 DV |
847 | * &drm_crtc_helper_funcs.atomic_check and &drm_plane_helper_funcs.atomic_check |
848 | * hooks provided by the driver. | |
c2fcd274 | 849 | * |
6806cdf9 | 850 | * It also sets &drm_crtc_state.planes_changed to indicate that a crtc has |
fc596660 ML |
851 | * updated planes. |
852 | * | |
c39032a8 | 853 | * RETURNS: |
c2fcd274 DV |
854 | * Zero for success or -errno |
855 | */ | |
d9b13620 DV |
856 | int |
857 | drm_atomic_helper_check_planes(struct drm_device *dev, | |
858 | struct drm_atomic_state *state) | |
c2fcd274 | 859 | { |
df63b999 | 860 | struct drm_crtc *crtc; |
415c3ac3 | 861 | struct drm_crtc_state *new_crtc_state; |
df63b999 | 862 | struct drm_plane *plane; |
415c3ac3 | 863 | struct drm_plane_state *new_plane_state, *old_plane_state; |
c2fcd274 DV |
864 | int i, ret = 0; |
865 | ||
415c3ac3 | 866 | for_each_oldnew_plane_in_state(state, plane, old_plane_state, new_plane_state, i) { |
b5ceff20 | 867 | const struct drm_plane_helper_funcs *funcs; |
c2fcd274 | 868 | |
869e188a DV |
869 | WARN_ON(!drm_modeset_is_locked(&plane->mutex)); |
870 | ||
c2fcd274 DV |
871 | funcs = plane->helper_private; |
872 | ||
415c3ac3 | 873 | drm_atomic_helper_plane_changed(state, old_plane_state, new_plane_state, plane); |
c2fcd274 | 874 | |
d9778b40 DR |
875 | drm_atomic_helper_check_plane_damage(state, new_plane_state); |
876 | ||
c2fcd274 DV |
877 | if (!funcs || !funcs->atomic_check) |
878 | continue; | |
879 | ||
415c3ac3 | 880 | ret = funcs->atomic_check(plane, new_plane_state); |
c2fcd274 | 881 | if (ret) { |
9f4c97a2 VS |
882 | DRM_DEBUG_ATOMIC("[PLANE:%d:%s] atomic driver check failed\n", |
883 | plane->base.id, plane->name); | |
c2fcd274 DV |
884 | return ret; |
885 | } | |
886 | } | |
887 | ||
415c3ac3 | 888 | for_each_new_crtc_in_state(state, crtc, new_crtc_state, i) { |
b5ceff20 | 889 | const struct drm_crtc_helper_funcs *funcs; |
c2fcd274 DV |
890 | |
891 | funcs = crtc->helper_private; | |
892 | ||
893 | if (!funcs || !funcs->atomic_check) | |
894 | continue; | |
895 | ||
415c3ac3 | 896 | ret = funcs->atomic_check(crtc, new_crtc_state); |
c2fcd274 | 897 | if (ret) { |
fa3ab4c2 VS |
898 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] atomic driver check failed\n", |
899 | crtc->base.id, crtc->name); | |
c2fcd274 DV |
900 | return ret; |
901 | } | |
902 | } | |
903 | ||
d9b13620 DV |
904 | return ret; |
905 | } | |
906 | EXPORT_SYMBOL(drm_atomic_helper_check_planes); | |
907 | ||
908 | /** | |
909 | * drm_atomic_helper_check - validate state object | |
910 | * @dev: DRM device | |
911 | * @state: the driver state object | |
912 | * | |
913 | * Check the state object to see if the requested state is physically possible. | |
914 | * Only crtcs and planes have check callbacks, so for any additional (global) | |
915 | * checking that a driver needs it can simply wrap that around this function. | |
6806cdf9 DV |
916 | * Drivers without such needs can directly use this as their |
917 | * &drm_mode_config_funcs.atomic_check callback. | |
d9b13620 | 918 | * |
b4274fbe DV |
919 | * This just wraps the two parts of the state checking for planes and modeset |
920 | * state in the default order: First it calls drm_atomic_helper_check_modeset() | |
921 | * and then drm_atomic_helper_check_planes(). The assumption is that the | |
6806cdf9 DV |
922 | * @drm_plane_helper_funcs.atomic_check and @drm_crtc_helper_funcs.atomic_check |
923 | * functions depend upon an updated adjusted_mode.clock to e.g. properly compute | |
924 | * watermarks. | |
b4274fbe | 925 | * |
49efffc7 PU |
926 | * Note that zpos normalization will add all enable planes to the state which |
927 | * might not desired for some drivers. | |
928 | * For example enable/disable of a cursor plane which have fixed zpos value | |
929 | * would trigger all other enabled planes to be forced to the state change. | |
930 | * | |
c39032a8 | 931 | * RETURNS: |
d9b13620 DV |
932 | * Zero for success or -errno |
933 | */ | |
934 | int drm_atomic_helper_check(struct drm_device *dev, | |
935 | struct drm_atomic_state *state) | |
936 | { | |
937 | int ret; | |
938 | ||
b4274fbe | 939 | ret = drm_atomic_helper_check_modeset(dev, state); |
d9b13620 DV |
940 | if (ret) |
941 | return ret; | |
942 | ||
49efffc7 PU |
943 | if (dev->mode_config.normalize_zpos) { |
944 | ret = drm_atomic_normalize_zpos(dev, state); | |
945 | if (ret) | |
946 | return ret; | |
947 | } | |
948 | ||
b4274fbe | 949 | ret = drm_atomic_helper_check_planes(dev, state); |
934ce1c2 RC |
950 | if (ret) |
951 | return ret; | |
952 | ||
fef9df8b GP |
953 | if (state->legacy_cursor_update) |
954 | state->async_update = !drm_atomic_helper_async_check(dev, state); | |
955 | ||
c2fcd274 DV |
956 | return ret; |
957 | } | |
958 | EXPORT_SYMBOL(drm_atomic_helper_check); | |
959 | ||
623369e5 DV |
960 | static void |
961 | disable_outputs(struct drm_device *dev, struct drm_atomic_state *old_state) | |
962 | { | |
df63b999 | 963 | struct drm_connector *connector; |
415c3ac3 | 964 | struct drm_connector_state *old_conn_state, *new_conn_state; |
df63b999 | 965 | struct drm_crtc *crtc; |
415c3ac3 | 966 | struct drm_crtc_state *old_crtc_state, *new_crtc_state; |
623369e5 DV |
967 | int i; |
968 | ||
415c3ac3 | 969 | for_each_oldnew_connector_in_state(old_state, connector, old_conn_state, new_conn_state, i) { |
b5ceff20 | 970 | const struct drm_encoder_helper_funcs *funcs; |
623369e5 DV |
971 | struct drm_encoder *encoder; |
972 | ||
623369e5 DV |
973 | /* Shut down everything that's in the changeset and currently |
974 | * still on. So need to check the old, saved state. */ | |
df63b999 | 975 | if (!old_conn_state->crtc) |
623369e5 DV |
976 | continue; |
977 | ||
b4d93679 | 978 | old_crtc_state = drm_atomic_get_old_crtc_state(old_state, old_conn_state->crtc); |
eab3bbef | 979 | |
4218a32f | 980 | if (!old_crtc_state->active || |
2465ff62 | 981 | !drm_atomic_crtc_needs_modeset(old_conn_state->crtc->state)) |
eab3bbef DV |
982 | continue; |
983 | ||
46df9adb | 984 | encoder = old_conn_state->best_encoder; |
623369e5 | 985 | |
46df9adb RC |
986 | /* We shouldn't get this far if we didn't previously have |
987 | * an encoder.. but WARN_ON() rather than explode. | |
988 | */ | |
989 | if (WARN_ON(!encoder)) | |
623369e5 DV |
990 | continue; |
991 | ||
992 | funcs = encoder->helper_private; | |
993 | ||
17a38d9c DV |
994 | DRM_DEBUG_ATOMIC("disabling [ENCODER:%d:%s]\n", |
995 | encoder->base.id, encoder->name); | |
95d6eb3b | 996 | |
623369e5 DV |
997 | /* |
998 | * Each encoder has at most one connector (since we always steal | |
f98bd3ef | 999 | * it away), so we won't call disable hooks twice. |
623369e5 | 1000 | */ |
5ade071b | 1001 | drm_atomic_bridge_disable(encoder->bridge, old_state); |
623369e5 DV |
1002 | |
1003 | /* Right function depends upon target state. */ | |
2827635e | 1004 | if (funcs) { |
43c76d72 SP |
1005 | if (funcs->atomic_disable) |
1006 | funcs->atomic_disable(encoder, old_state); | |
1007 | else if (new_conn_state->crtc && funcs->prepare) | |
2827635e NT |
1008 | funcs->prepare(encoder); |
1009 | else if (funcs->disable) | |
1010 | funcs->disable(encoder); | |
1011 | else if (funcs->dpms) | |
1012 | funcs->dpms(encoder, DRM_MODE_DPMS_OFF); | |
1013 | } | |
623369e5 | 1014 | |
5ade071b | 1015 | drm_atomic_bridge_post_disable(encoder->bridge, old_state); |
623369e5 DV |
1016 | } |
1017 | ||
415c3ac3 | 1018 | for_each_oldnew_crtc_in_state(old_state, crtc, old_crtc_state, new_crtc_state, i) { |
b5ceff20 | 1019 | const struct drm_crtc_helper_funcs *funcs; |
84014b0a | 1020 | int ret; |
623369e5 DV |
1021 | |
1022 | /* Shut down everything that needs a full modeset. */ | |
415c3ac3 | 1023 | if (!drm_atomic_crtc_needs_modeset(new_crtc_state)) |
eab3bbef DV |
1024 | continue; |
1025 | ||
1026 | if (!old_crtc_state->active) | |
623369e5 DV |
1027 | continue; |
1028 | ||
1029 | funcs = crtc->helper_private; | |
1030 | ||
fa3ab4c2 VS |
1031 | DRM_DEBUG_ATOMIC("disabling [CRTC:%d:%s]\n", |
1032 | crtc->base.id, crtc->name); | |
95d6eb3b DV |
1033 | |
1034 | ||
623369e5 | 1035 | /* Right function depends upon target state. */ |
415c3ac3 | 1036 | if (new_crtc_state->enable && funcs->prepare) |
623369e5 | 1037 | funcs->prepare(crtc); |
c9ac8b4c LY |
1038 | else if (funcs->atomic_disable) |
1039 | funcs->atomic_disable(crtc, old_crtc_state); | |
623369e5 DV |
1040 | else if (funcs->disable) |
1041 | funcs->disable(crtc); | |
fe616928 | 1042 | else if (funcs->dpms) |
623369e5 | 1043 | funcs->dpms(crtc, DRM_MODE_DPMS_OFF); |
84014b0a DV |
1044 | |
1045 | if (!(dev->irq_enabled && dev->num_crtcs)) | |
1046 | continue; | |
1047 | ||
1048 | ret = drm_crtc_vblank_get(crtc); | |
1049 | WARN_ONCE(ret != -EINVAL, "driver forgot to call drm_crtc_vblank_off()\n"); | |
1050 | if (ret == 0) | |
1051 | drm_crtc_vblank_put(crtc); | |
623369e5 DV |
1052 | } |
1053 | } | |
1054 | ||
4c18d301 DV |
1055 | /** |
1056 | * drm_atomic_helper_update_legacy_modeset_state - update legacy modeset state | |
1057 | * @dev: DRM device | |
1058 | * @old_state: atomic state object with old state structures | |
1059 | * | |
1060 | * This function updates all the various legacy modeset state pointers in | |
1061 | * connectors, encoders and crtcs. It also updates the timestamping constants | |
1062 | * used for precise vblank timestamps by calling | |
1063 | * drm_calc_timestamping_constants(). | |
1064 | * | |
1065 | * Drivers can use this for building their own atomic commit if they don't have | |
1066 | * a pure helper-based modeset implementation. | |
2e2b96ef DV |
1067 | * |
1068 | * Since these updates are not synchronized with lockings, only code paths | |
1069 | * called from &drm_mode_config_helper_funcs.atomic_commit_tail can look at the | |
1070 | * legacy state filled out by this helper. Defacto this means this helper and | |
1071 | * the legacy state pointers are only really useful for transitioning an | |
1072 | * existing driver to the atomic world. | |
4c18d301 DV |
1073 | */ |
1074 | void | |
1075 | drm_atomic_helper_update_legacy_modeset_state(struct drm_device *dev, | |
1076 | struct drm_atomic_state *old_state) | |
623369e5 | 1077 | { |
df63b999 | 1078 | struct drm_connector *connector; |
415c3ac3 | 1079 | struct drm_connector_state *old_conn_state, *new_conn_state; |
df63b999 | 1080 | struct drm_crtc *crtc; |
415c3ac3 | 1081 | struct drm_crtc_state *new_crtc_state; |
623369e5 DV |
1082 | int i; |
1083 | ||
8c10342c | 1084 | /* clear out existing links and update dpms */ |
415c3ac3 | 1085 | for_each_oldnew_connector_in_state(old_state, connector, old_conn_state, new_conn_state, i) { |
8c10342c ML |
1086 | if (connector->encoder) { |
1087 | WARN_ON(!connector->encoder->crtc); | |
1088 | ||
1089 | connector->encoder->crtc = NULL; | |
1090 | connector->encoder = NULL; | |
1091 | } | |
623369e5 | 1092 | |
415c3ac3 | 1093 | crtc = new_conn_state->crtc; |
8c10342c ML |
1094 | if ((!crtc && old_conn_state->crtc) || |
1095 | (crtc && drm_atomic_crtc_needs_modeset(crtc->state))) { | |
8c10342c | 1096 | int mode = DRM_MODE_DPMS_OFF; |
623369e5 | 1097 | |
8c10342c ML |
1098 | if (crtc && crtc->state->active) |
1099 | mode = DRM_MODE_DPMS_ON; | |
1100 | ||
1101 | connector->dpms = mode; | |
8c10342c | 1102 | } |
623369e5 DV |
1103 | } |
1104 | ||
1105 | /* set new links */ | |
415c3ac3 ML |
1106 | for_each_new_connector_in_state(old_state, connector, new_conn_state, i) { |
1107 | if (!new_conn_state->crtc) | |
623369e5 DV |
1108 | continue; |
1109 | ||
415c3ac3 | 1110 | if (WARN_ON(!new_conn_state->best_encoder)) |
623369e5 DV |
1111 | continue; |
1112 | ||
415c3ac3 ML |
1113 | connector->encoder = new_conn_state->best_encoder; |
1114 | connector->encoder->crtc = new_conn_state->crtc; | |
623369e5 DV |
1115 | } |
1116 | ||
1117 | /* set legacy state in the crtc structure */ | |
415c3ac3 | 1118 | for_each_new_crtc_in_state(old_state, crtc, new_crtc_state, i) { |
2660801f | 1119 | struct drm_plane *primary = crtc->primary; |
b4d93679 | 1120 | struct drm_plane_state *new_plane_state; |
2660801f | 1121 | |
415c3ac3 ML |
1122 | crtc->mode = new_crtc_state->mode; |
1123 | crtc->enabled = new_crtc_state->enable; | |
2660801f | 1124 | |
b4d93679 ML |
1125 | new_plane_state = |
1126 | drm_atomic_get_new_plane_state(old_state, primary); | |
1127 | ||
1128 | if (new_plane_state && new_plane_state->crtc == crtc) { | |
1129 | crtc->x = new_plane_state->src_x >> 16; | |
1130 | crtc->y = new_plane_state->src_y >> 16; | |
2660801f | 1131 | } |
3d51d2d2 | 1132 | |
415c3ac3 | 1133 | if (new_crtc_state->enable) |
3d51d2d2 | 1134 | drm_calc_timestamping_constants(crtc, |
415c3ac3 | 1135 | &new_crtc_state->adjusted_mode); |
623369e5 DV |
1136 | } |
1137 | } | |
4c18d301 | 1138 | EXPORT_SYMBOL(drm_atomic_helper_update_legacy_modeset_state); |
623369e5 DV |
1139 | |
1140 | static void | |
1141 | crtc_set_mode(struct drm_device *dev, struct drm_atomic_state *old_state) | |
1142 | { | |
df63b999 | 1143 | struct drm_crtc *crtc; |
415c3ac3 | 1144 | struct drm_crtc_state *new_crtc_state; |
df63b999 | 1145 | struct drm_connector *connector; |
415c3ac3 | 1146 | struct drm_connector_state *new_conn_state; |
623369e5 DV |
1147 | int i; |
1148 | ||
415c3ac3 | 1149 | for_each_new_crtc_in_state(old_state, crtc, new_crtc_state, i) { |
b5ceff20 | 1150 | const struct drm_crtc_helper_funcs *funcs; |
623369e5 | 1151 | |
415c3ac3 | 1152 | if (!new_crtc_state->mode_changed) |
623369e5 DV |
1153 | continue; |
1154 | ||
1155 | funcs = crtc->helper_private; | |
1156 | ||
415c3ac3 | 1157 | if (new_crtc_state->enable && funcs->mode_set_nofb) { |
fa3ab4c2 VS |
1158 | DRM_DEBUG_ATOMIC("modeset on [CRTC:%d:%s]\n", |
1159 | crtc->base.id, crtc->name); | |
95d6eb3b | 1160 | |
623369e5 | 1161 | funcs->mode_set_nofb(crtc); |
95d6eb3b | 1162 | } |
623369e5 DV |
1163 | } |
1164 | ||
415c3ac3 | 1165 | for_each_new_connector_in_state(old_state, connector, new_conn_state, i) { |
b5ceff20 | 1166 | const struct drm_encoder_helper_funcs *funcs; |
623369e5 DV |
1167 | struct drm_encoder *encoder; |
1168 | struct drm_display_mode *mode, *adjusted_mode; | |
1169 | ||
415c3ac3 | 1170 | if (!new_conn_state->best_encoder) |
623369e5 DV |
1171 | continue; |
1172 | ||
415c3ac3 | 1173 | encoder = new_conn_state->best_encoder; |
623369e5 | 1174 | funcs = encoder->helper_private; |
415c3ac3 | 1175 | new_crtc_state = new_conn_state->crtc->state; |
623369e5 DV |
1176 | mode = &new_crtc_state->mode; |
1177 | adjusted_mode = &new_crtc_state->adjusted_mode; | |
1178 | ||
eab3bbef DV |
1179 | if (!new_crtc_state->mode_changed) |
1180 | continue; | |
1181 | ||
17a38d9c DV |
1182 | DRM_DEBUG_ATOMIC("modeset on [ENCODER:%d:%s]\n", |
1183 | encoder->base.id, encoder->name); | |
95d6eb3b | 1184 | |
623369e5 DV |
1185 | /* |
1186 | * Each encoder has at most one connector (since we always steal | |
f98bd3ef | 1187 | * it away), so we won't call mode_set hooks twice. |
623369e5 | 1188 | */ |
fe4a11c9 PZ |
1189 | if (funcs && funcs->atomic_mode_set) { |
1190 | funcs->atomic_mode_set(encoder, new_crtc_state, | |
415c3ac3 | 1191 | new_conn_state); |
fe4a11c9 | 1192 | } else if (funcs && funcs->mode_set) { |
c982bd90 | 1193 | funcs->mode_set(encoder, mode, adjusted_mode); |
fe4a11c9 | 1194 | } |
623369e5 | 1195 | |
862e686c | 1196 | drm_bridge_mode_set(encoder->bridge, mode, adjusted_mode); |
623369e5 DV |
1197 | } |
1198 | } | |
1199 | ||
1200 | /** | |
1af434a9 | 1201 | * drm_atomic_helper_commit_modeset_disables - modeset commit to disable outputs |
623369e5 | 1202 | * @dev: DRM device |
a072f809 | 1203 | * @old_state: atomic state object with old state structures |
623369e5 | 1204 | * |
1af434a9 | 1205 | * This function shuts down all the outputs that need to be shut down and |
623369e5 | 1206 | * prepares them (if required) with the new mode. |
1af434a9 | 1207 | * |
60acc4eb | 1208 | * For compatibility with legacy crtc helpers this should be called before |
1af434a9 DV |
1209 | * drm_atomic_helper_commit_planes(), which is what the default commit function |
1210 | * does. But drivers with different needs can group the modeset commits together | |
1211 | * and do the plane commits at the end. This is useful for drivers doing runtime | |
1212 | * PM since planes updates then only happen when the CRTC is actually enabled. | |
623369e5 | 1213 | */ |
1af434a9 DV |
1214 | void drm_atomic_helper_commit_modeset_disables(struct drm_device *dev, |
1215 | struct drm_atomic_state *old_state) | |
623369e5 | 1216 | { |
a072f809 | 1217 | disable_outputs(dev, old_state); |
4c18d301 DV |
1218 | |
1219 | drm_atomic_helper_update_legacy_modeset_state(dev, old_state); | |
1220 | ||
a072f809 | 1221 | crtc_set_mode(dev, old_state); |
623369e5 | 1222 | } |
1af434a9 | 1223 | EXPORT_SYMBOL(drm_atomic_helper_commit_modeset_disables); |
623369e5 | 1224 | |
935774cd BS |
1225 | static void drm_atomic_helper_commit_writebacks(struct drm_device *dev, |
1226 | struct drm_atomic_state *old_state) | |
1227 | { | |
1228 | struct drm_connector *connector; | |
1229 | struct drm_connector_state *new_conn_state; | |
1230 | int i; | |
1231 | ||
1232 | for_each_new_connector_in_state(old_state, connector, new_conn_state, i) { | |
1233 | const struct drm_connector_helper_funcs *funcs; | |
1234 | ||
1235 | funcs = connector->helper_private; | |
814bde99 BB |
1236 | if (!funcs->atomic_commit) |
1237 | continue; | |
935774cd BS |
1238 | |
1239 | if (new_conn_state->writeback_job && new_conn_state->writeback_job->fb) { | |
1240 | WARN_ON(connector->connector_type != DRM_MODE_CONNECTOR_WRITEBACK); | |
425132fd | 1241 | funcs->atomic_commit(connector, new_conn_state); |
935774cd BS |
1242 | } |
1243 | } | |
1244 | } | |
1245 | ||
623369e5 | 1246 | /** |
1af434a9 | 1247 | * drm_atomic_helper_commit_modeset_enables - modeset commit to enable outputs |
623369e5 DV |
1248 | * @dev: DRM device |
1249 | * @old_state: atomic state object with old state structures | |
1250 | * | |
1af434a9 DV |
1251 | * This function enables all the outputs with the new configuration which had to |
1252 | * be turned off for the update. | |
1253 | * | |
60acc4eb | 1254 | * For compatibility with legacy crtc helpers this should be called after |
1af434a9 DV |
1255 | * drm_atomic_helper_commit_planes(), which is what the default commit function |
1256 | * does. But drivers with different needs can group the modeset commits together | |
1257 | * and do the plane commits at the end. This is useful for drivers doing runtime | |
1258 | * PM since planes updates then only happen when the CRTC is actually enabled. | |
623369e5 | 1259 | */ |
1af434a9 DV |
1260 | void drm_atomic_helper_commit_modeset_enables(struct drm_device *dev, |
1261 | struct drm_atomic_state *old_state) | |
623369e5 | 1262 | { |
df63b999 | 1263 | struct drm_crtc *crtc; |
0b20a0f8 | 1264 | struct drm_crtc_state *old_crtc_state; |
415c3ac3 | 1265 | struct drm_crtc_state *new_crtc_state; |
df63b999 | 1266 | struct drm_connector *connector; |
415c3ac3 | 1267 | struct drm_connector_state *new_conn_state; |
623369e5 DV |
1268 | int i; |
1269 | ||
0b20a0f8 | 1270 | for_each_oldnew_crtc_in_state(old_state, crtc, old_crtc_state, new_crtc_state, i) { |
b5ceff20 | 1271 | const struct drm_crtc_helper_funcs *funcs; |
623369e5 DV |
1272 | |
1273 | /* Need to filter out CRTCs where only planes change. */ | |
415c3ac3 | 1274 | if (!drm_atomic_crtc_needs_modeset(new_crtc_state)) |
eab3bbef DV |
1275 | continue; |
1276 | ||
415c3ac3 | 1277 | if (!new_crtc_state->active) |
623369e5 DV |
1278 | continue; |
1279 | ||
1280 | funcs = crtc->helper_private; | |
1281 | ||
415c3ac3 | 1282 | if (new_crtc_state->enable) { |
fa3ab4c2 VS |
1283 | DRM_DEBUG_ATOMIC("enabling [CRTC:%d:%s]\n", |
1284 | crtc->base.id, crtc->name); | |
0b20a0f8 LP |
1285 | if (funcs->atomic_enable) |
1286 | funcs->atomic_enable(crtc, old_crtc_state); | |
fe616928 | 1287 | else if (funcs->commit) |
ee0a89cf DV |
1288 | funcs->commit(crtc); |
1289 | } | |
623369e5 DV |
1290 | } |
1291 | ||
415c3ac3 | 1292 | for_each_new_connector_in_state(old_state, connector, new_conn_state, i) { |
b5ceff20 | 1293 | const struct drm_encoder_helper_funcs *funcs; |
623369e5 DV |
1294 | struct drm_encoder *encoder; |
1295 | ||
415c3ac3 | 1296 | if (!new_conn_state->best_encoder) |
623369e5 DV |
1297 | continue; |
1298 | ||
415c3ac3 ML |
1299 | if (!new_conn_state->crtc->state->active || |
1300 | !drm_atomic_crtc_needs_modeset(new_conn_state->crtc->state)) | |
eab3bbef DV |
1301 | continue; |
1302 | ||
415c3ac3 | 1303 | encoder = new_conn_state->best_encoder; |
623369e5 DV |
1304 | funcs = encoder->helper_private; |
1305 | ||
17a38d9c DV |
1306 | DRM_DEBUG_ATOMIC("enabling [ENCODER:%d:%s]\n", |
1307 | encoder->base.id, encoder->name); | |
95d6eb3b | 1308 | |
623369e5 DV |
1309 | /* |
1310 | * Each encoder has at most one connector (since we always steal | |
f98bd3ef | 1311 | * it away), so we won't call enable hooks twice. |
623369e5 | 1312 | */ |
5ade071b | 1313 | drm_atomic_bridge_pre_enable(encoder->bridge, old_state); |
623369e5 | 1314 | |
2827635e | 1315 | if (funcs) { |
43c76d72 SP |
1316 | if (funcs->atomic_enable) |
1317 | funcs->atomic_enable(encoder, old_state); | |
1318 | else if (funcs->enable) | |
2827635e NT |
1319 | funcs->enable(encoder); |
1320 | else if (funcs->commit) | |
1321 | funcs->commit(encoder); | |
1322 | } | |
623369e5 | 1323 | |
5ade071b | 1324 | drm_atomic_bridge_enable(encoder->bridge, old_state); |
623369e5 | 1325 | } |
935774cd BS |
1326 | |
1327 | drm_atomic_helper_commit_writebacks(dev, old_state); | |
623369e5 | 1328 | } |
1af434a9 | 1329 | EXPORT_SYMBOL(drm_atomic_helper_commit_modeset_enables); |
623369e5 | 1330 | |
4c5b7f3a RC |
1331 | /** |
1332 | * drm_atomic_helper_wait_for_fences - wait for fences stashed in plane state | |
1333 | * @dev: DRM device | |
1334 | * @state: atomic state object with old state structures | |
1ea0c02e DV |
1335 | * @pre_swap: If true, do an interruptible wait, and @state is the new state. |
1336 | * Otherwise @state is the old state. | |
4c5b7f3a RC |
1337 | * |
1338 | * For implicit sync, driver should fish the exclusive fence out from the | |
1339 | * incoming fb's and stash it in the drm_plane_state. This is called after | |
1340 | * drm_atomic_helper_swap_state() so it uses the current plane state (and | |
1341 | * just uses the atomic state to find the changed planes) | |
f6ce410a | 1342 | * |
1ea0c02e DV |
1343 | * Note that @pre_swap is needed since the point where we block for fences moves |
1344 | * around depending upon whether an atomic commit is blocking or | |
42590372 GP |
1345 | * non-blocking. For non-blocking commit all waiting needs to happen after |
1346 | * drm_atomic_helper_swap_state() is called, but for blocking commits we want | |
1ea0c02e DV |
1347 | * to wait **before** we do anything that can't be easily rolled back. That is |
1348 | * before we call drm_atomic_helper_swap_state(). | |
1349 | * | |
f54d1867 | 1350 | * Returns zero if success or < 0 if dma_fence_wait() fails. |
4c5b7f3a | 1351 | */ |
f6ce410a GP |
1352 | int drm_atomic_helper_wait_for_fences(struct drm_device *dev, |
1353 | struct drm_atomic_state *state, | |
1354 | bool pre_swap) | |
e2330f07 | 1355 | { |
df63b999 | 1356 | struct drm_plane *plane; |
415c3ac3 | 1357 | struct drm_plane_state *new_plane_state; |
f6ce410a | 1358 | int i, ret; |
e2330f07 | 1359 | |
415c3ac3 ML |
1360 | for_each_new_plane_in_state(state, plane, new_plane_state, i) { |
1361 | if (!new_plane_state->fence) | |
e2330f07 DV |
1362 | continue; |
1363 | ||
415c3ac3 | 1364 | WARN_ON(!new_plane_state->fb); |
f6ce410a GP |
1365 | |
1366 | /* | |
1367 | * If waiting for fences pre-swap (ie: nonblock), userspace can | |
1368 | * still interrupt the operation. Instead of blocking until the | |
1369 | * timer expires, make the wait interruptible. | |
1370 | */ | |
415c3ac3 | 1371 | ret = dma_fence_wait(new_plane_state->fence, pre_swap); |
f6ce410a GP |
1372 | if (ret) |
1373 | return ret; | |
e2330f07 | 1374 | |
415c3ac3 ML |
1375 | dma_fence_put(new_plane_state->fence); |
1376 | new_plane_state->fence = NULL; | |
e2330f07 | 1377 | } |
f6ce410a GP |
1378 | |
1379 | return 0; | |
e2330f07 | 1380 | } |
4c5b7f3a | 1381 | EXPORT_SYMBOL(drm_atomic_helper_wait_for_fences); |
e2330f07 | 1382 | |
5ee3229c RC |
1383 | /** |
1384 | * drm_atomic_helper_wait_for_vblanks - wait for vblank on crtcs | |
1385 | * @dev: DRM device | |
1386 | * @old_state: atomic state object with old state structures | |
1387 | * | |
1388 | * Helper to, after atomic commit, wait for vblanks on all effected | |
1389 | * crtcs (ie. before cleaning up old framebuffers using | |
01086487 | 1390 | * drm_atomic_helper_cleanup_planes()). It will only wait on CRTCs where the |
ab58e338 DV |
1391 | * framebuffers have actually changed to optimize for the legacy cursor and |
1392 | * plane update use-case. | |
01086487 BB |
1393 | * |
1394 | * Drivers using the nonblocking commit tracking support initialized by calling | |
1395 | * drm_atomic_helper_setup_commit() should look at | |
1396 | * drm_atomic_helper_wait_for_flip_done() as an alternative. | |
5ee3229c RC |
1397 | */ |
1398 | void | |
1399 | drm_atomic_helper_wait_for_vblanks(struct drm_device *dev, | |
1400 | struct drm_atomic_state *old_state) | |
623369e5 DV |
1401 | { |
1402 | struct drm_crtc *crtc; | |
415c3ac3 | 1403 | struct drm_crtc_state *old_crtc_state, *new_crtc_state; |
623369e5 | 1404 | int i, ret; |
bdc57146 | 1405 | unsigned crtc_mask = 0; |
623369e5 | 1406 | |
bdc57146 ML |
1407 | /* |
1408 | * Legacy cursor ioctls are completely unsynced, and userspace | |
1409 | * relies on that (by doing tons of cursor updates). | |
1410 | */ | |
1411 | if (old_state->legacy_cursor_update) | |
1412 | return; | |
623369e5 | 1413 | |
415c3ac3 | 1414 | for_each_oldnew_crtc_in_state(old_state, crtc, old_crtc_state, new_crtc_state, i) { |
a76dfe35 | 1415 | if (!new_crtc_state->active) |
ab58e338 DV |
1416 | continue; |
1417 | ||
623369e5 DV |
1418 | ret = drm_crtc_vblank_get(crtc); |
1419 | if (ret != 0) | |
1420 | continue; | |
1421 | ||
bdc57146 ML |
1422 | crtc_mask |= drm_crtc_mask(crtc); |
1423 | old_state->crtcs[i].last_vblank_count = drm_crtc_vblank_count(crtc); | |
623369e5 DV |
1424 | } |
1425 | ||
415c3ac3 | 1426 | for_each_old_crtc_in_state(old_state, crtc, old_crtc_state, i) { |
bdc57146 | 1427 | if (!(crtc_mask & drm_crtc_mask(crtc))) |
623369e5 DV |
1428 | continue; |
1429 | ||
1430 | ret = wait_event_timeout(dev->vblank[i].queue, | |
bdc57146 | 1431 | old_state->crtcs[i].last_vblank_count != |
d4853630 | 1432 | drm_crtc_vblank_count(crtc), |
b3198c38 | 1433 | msecs_to_jiffies(100)); |
623369e5 | 1434 | |
6ac7c548 RK |
1435 | WARN(!ret, "[CRTC:%d:%s] vblank wait timed out\n", |
1436 | crtc->base.id, crtc->name); | |
8d4d0d70 | 1437 | |
623369e5 DV |
1438 | drm_crtc_vblank_put(crtc); |
1439 | } | |
1440 | } | |
5ee3229c | 1441 | EXPORT_SYMBOL(drm_atomic_helper_wait_for_vblanks); |
623369e5 | 1442 | |
01086487 BB |
1443 | /** |
1444 | * drm_atomic_helper_wait_for_flip_done - wait for all page flips to be done | |
1445 | * @dev: DRM device | |
1446 | * @old_state: atomic state object with old state structures | |
1447 | * | |
1448 | * Helper to, after atomic commit, wait for page flips on all effected | |
1449 | * crtcs (ie. before cleaning up old framebuffers using | |
1450 | * drm_atomic_helper_cleanup_planes()). Compared to | |
1451 | * drm_atomic_helper_wait_for_vblanks() this waits for the completion of on all | |
1452 | * CRTCs, assuming that cursors-only updates are signalling their completion | |
1453 | * immediately (or using a different path). | |
1454 | * | |
1455 | * This requires that drivers use the nonblocking commit tracking support | |
1456 | * initialized using drm_atomic_helper_setup_commit(). | |
1457 | */ | |
1458 | void drm_atomic_helper_wait_for_flip_done(struct drm_device *dev, | |
1459 | struct drm_atomic_state *old_state) | |
1460 | { | |
01086487 BB |
1461 | struct drm_crtc *crtc; |
1462 | int i; | |
1463 | ||
4364bcb2 LL |
1464 | for (i = 0; i < dev->mode_config.num_crtc; i++) { |
1465 | struct drm_crtc_commit *commit = old_state->crtcs[i].commit; | |
01086487 BB |
1466 | int ret; |
1467 | ||
4364bcb2 LL |
1468 | crtc = old_state->crtcs[i].ptr; |
1469 | ||
1470 | if (!crtc || !commit) | |
01086487 BB |
1471 | continue; |
1472 | ||
1473 | ret = wait_for_completion_timeout(&commit->flip_done, 10 * HZ); | |
1474 | if (ret == 0) | |
1475 | DRM_ERROR("[CRTC:%d:%s] flip_done timed out\n", | |
1476 | crtc->base.id, crtc->name); | |
1477 | } | |
2de42f79 VS |
1478 | |
1479 | if (old_state->fake_commit) | |
1480 | complete_all(&old_state->fake_commit->flip_done); | |
01086487 BB |
1481 | } |
1482 | EXPORT_SYMBOL(drm_atomic_helper_wait_for_flip_done); | |
1483 | ||
623369e5 | 1484 | /** |
9f2a7950 | 1485 | * drm_atomic_helper_commit_tail - commit atomic update to hardware |
1ea0c02e | 1486 | * @old_state: atomic state object with old state structures |
623369e5 | 1487 | * |
6806cdf9 | 1488 | * This is the default implementation for the |
81a099ac MR |
1489 | * &drm_mode_config_helper_funcs.atomic_commit_tail hook, for drivers |
1490 | * that do not support runtime_pm or do not need the CRTC to be | |
1491 | * enabled to perform a commit. Otherwise, see | |
1492 | * drm_atomic_helper_commit_tail_rpm(). | |
623369e5 | 1493 | * |
9f2a7950 | 1494 | * Note that the default ordering of how the various stages are called is to |
81a099ac | 1495 | * match the legacy modeset helper library closest. |
9f2a7950 | 1496 | */ |
1ea0c02e | 1497 | void drm_atomic_helper_commit_tail(struct drm_atomic_state *old_state) |
9f2a7950 | 1498 | { |
1ea0c02e | 1499 | struct drm_device *dev = old_state->dev; |
9f2a7950 | 1500 | |
1ea0c02e | 1501 | drm_atomic_helper_commit_modeset_disables(dev, old_state); |
9f2a7950 | 1502 | |
1ea0c02e | 1503 | drm_atomic_helper_commit_planes(dev, old_state, 0); |
9f2a7950 | 1504 | |
1ea0c02e | 1505 | drm_atomic_helper_commit_modeset_enables(dev, old_state); |
9f2a7950 | 1506 | |
6fb42b66 BB |
1507 | drm_atomic_helper_fake_vblank(old_state); |
1508 | ||
1ea0c02e | 1509 | drm_atomic_helper_commit_hw_done(old_state); |
9f2a7950 | 1510 | |
1ea0c02e | 1511 | drm_atomic_helper_wait_for_vblanks(dev, old_state); |
9f2a7950 | 1512 | |
1ea0c02e | 1513 | drm_atomic_helper_cleanup_planes(dev, old_state); |
9f2a7950 DV |
1514 | } |
1515 | EXPORT_SYMBOL(drm_atomic_helper_commit_tail); | |
1516 | ||
81a099ac MR |
1517 | /** |
1518 | * drm_atomic_helper_commit_tail_rpm - commit atomic update to hardware | |
1519 | * @old_state: new modeset state to be committed | |
1520 | * | |
1521 | * This is an alternative implementation for the | |
1522 | * &drm_mode_config_helper_funcs.atomic_commit_tail hook, for drivers | |
1523 | * that support runtime_pm or need the CRTC to be enabled to perform a | |
1524 | * commit. Otherwise, one should use the default implementation | |
1525 | * drm_atomic_helper_commit_tail(). | |
1526 | */ | |
1527 | void drm_atomic_helper_commit_tail_rpm(struct drm_atomic_state *old_state) | |
1528 | { | |
1529 | struct drm_device *dev = old_state->dev; | |
1530 | ||
1531 | drm_atomic_helper_commit_modeset_disables(dev, old_state); | |
1532 | ||
1533 | drm_atomic_helper_commit_modeset_enables(dev, old_state); | |
1534 | ||
1535 | drm_atomic_helper_commit_planes(dev, old_state, | |
1536 | DRM_PLANE_COMMIT_ACTIVE_ONLY); | |
1537 | ||
6fb42b66 BB |
1538 | drm_atomic_helper_fake_vblank(old_state); |
1539 | ||
81a099ac MR |
1540 | drm_atomic_helper_commit_hw_done(old_state); |
1541 | ||
1542 | drm_atomic_helper_wait_for_vblanks(dev, old_state); | |
1543 | ||
1544 | drm_atomic_helper_cleanup_planes(dev, old_state); | |
1545 | } | |
1546 | EXPORT_SYMBOL(drm_atomic_helper_commit_tail_rpm); | |
1547 | ||
1ea0c02e | 1548 | static void commit_tail(struct drm_atomic_state *old_state) |
9f2a7950 | 1549 | { |
1ea0c02e | 1550 | struct drm_device *dev = old_state->dev; |
a4b10cce | 1551 | const struct drm_mode_config_helper_funcs *funcs; |
9f2a7950 DV |
1552 | |
1553 | funcs = dev->mode_config.helper_private; | |
1554 | ||
1ea0c02e | 1555 | drm_atomic_helper_wait_for_fences(dev, old_state, false); |
9f2a7950 | 1556 | |
1ea0c02e | 1557 | drm_atomic_helper_wait_for_dependencies(old_state); |
9f2a7950 DV |
1558 | |
1559 | if (funcs && funcs->atomic_commit_tail) | |
1ea0c02e | 1560 | funcs->atomic_commit_tail(old_state); |
9f2a7950 | 1561 | else |
1ea0c02e | 1562 | drm_atomic_helper_commit_tail(old_state); |
9f2a7950 | 1563 | |
1ea0c02e | 1564 | drm_atomic_helper_commit_cleanup_done(old_state); |
9f2a7950 | 1565 | |
1ea0c02e | 1566 | drm_atomic_state_put(old_state); |
9f2a7950 DV |
1567 | } |
1568 | ||
1569 | static void commit_work(struct work_struct *work) | |
1570 | { | |
1571 | struct drm_atomic_state *state = container_of(work, | |
1572 | struct drm_atomic_state, | |
1573 | commit_work); | |
1574 | commit_tail(state); | |
1575 | } | |
1576 | ||
fef9df8b GP |
1577 | /** |
1578 | * drm_atomic_helper_async_check - check if state can be commited asynchronously | |
1579 | * @dev: DRM device | |
1580 | * @state: the driver state object | |
1581 | * | |
1582 | * This helper will check if it is possible to commit the state asynchronously. | |
1583 | * Async commits are not supposed to swap the states like normal sync commits | |
1584 | * but just do in-place changes on the current state. | |
1585 | * | |
1586 | * It will return 0 if the commit can happen in an asynchronous fashion or error | |
1587 | * if not. Note that error just mean it can't be commited asynchronously, if it | |
1588 | * fails the commit should be treated like a normal synchronous commit. | |
1589 | */ | |
1590 | int drm_atomic_helper_async_check(struct drm_device *dev, | |
1591 | struct drm_atomic_state *state) | |
1592 | { | |
1593 | struct drm_crtc *crtc; | |
1594 | struct drm_crtc_state *crtc_state; | |
de2d8db3 BB |
1595 | struct drm_plane *plane = NULL; |
1596 | struct drm_plane_state *old_plane_state = NULL; | |
1597 | struct drm_plane_state *new_plane_state = NULL; | |
fef9df8b | 1598 | const struct drm_plane_helper_funcs *funcs; |
669c9215 | 1599 | int i, n_planes = 0; |
fef9df8b GP |
1600 | |
1601 | for_each_new_crtc_in_state(state, crtc, crtc_state, i) { | |
1602 | if (drm_atomic_crtc_needs_modeset(crtc_state)) | |
1603 | return -EINVAL; | |
1604 | } | |
1605 | ||
669c9215 | 1606 | for_each_oldnew_plane_in_state(state, plane, old_plane_state, new_plane_state, i) |
fef9df8b | 1607 | n_planes++; |
fef9df8b GP |
1608 | |
1609 | /* FIXME: we support only single plane updates for now */ | |
669c9215 | 1610 | if (n_planes != 1) |
fef9df8b GP |
1611 | return -EINVAL; |
1612 | ||
603ba2df BB |
1613 | if (!new_plane_state->crtc || |
1614 | old_plane_state->crtc != new_plane_state->crtc) | |
fef9df8b GP |
1615 | return -EINVAL; |
1616 | ||
22163229 NK |
1617 | /* |
1618 | * FIXME: Since prepare_fb and cleanup_fb are always called on | |
1619 | * the new_plane_state for async updates we need to block framebuffer | |
1620 | * changes. This prevents use of a fb that's been cleaned up and | |
1621 | * double cleanups from occuring. | |
1622 | */ | |
1623 | if (old_plane_state->fb != new_plane_state->fb) | |
1624 | return -EINVAL; | |
1625 | ||
fef9df8b GP |
1626 | funcs = plane->helper_private; |
1627 | if (!funcs->atomic_async_update) | |
1628 | return -EINVAL; | |
1629 | ||
669c9215 | 1630 | if (new_plane_state->fence) |
fef9df8b GP |
1631 | return -EINVAL; |
1632 | ||
1633 | /* | |
1634 | * Don't do an async update if there is an outstanding commit modifying | |
1635 | * the plane. This prevents our async update's changes from getting | |
1636 | * overridden by a previous synchronous update's state. | |
1637 | */ | |
669c9215 ML |
1638 | if (old_plane_state->commit && |
1639 | !try_wait_for_completion(&old_plane_state->commit->hw_done)) | |
1640 | return -EBUSY; | |
fef9df8b | 1641 | |
669c9215 | 1642 | return funcs->atomic_async_check(plane, new_plane_state); |
fef9df8b GP |
1643 | } |
1644 | EXPORT_SYMBOL(drm_atomic_helper_async_check); | |
1645 | ||
1646 | /** | |
1647 | * drm_atomic_helper_async_commit - commit state asynchronously | |
1648 | * @dev: DRM device | |
1649 | * @state: the driver state object | |
1650 | * | |
1651 | * This function commits a state asynchronously, i.e., not vblank | |
1652 | * synchronized. It should be used on a state only when | |
1653 | * drm_atomic_async_check() succeeds. Async commits are not supposed to swap | |
1654 | * the states like normal sync commits, but just do in-place changes on the | |
1655 | * current state. | |
1656 | */ | |
1657 | void drm_atomic_helper_async_commit(struct drm_device *dev, | |
1658 | struct drm_atomic_state *state) | |
1659 | { | |
1660 | struct drm_plane *plane; | |
1661 | struct drm_plane_state *plane_state; | |
1662 | const struct drm_plane_helper_funcs *funcs; | |
1663 | int i; | |
1664 | ||
1665 | for_each_new_plane_in_state(state, plane, plane_state, i) { | |
1666 | funcs = plane->helper_private; | |
1667 | funcs->atomic_async_update(plane, plane_state); | |
02edfd9c BB |
1668 | |
1669 | /* | |
1670 | * ->atomic_async_update() is supposed to update the | |
1671 | * plane->state in-place, make sure at least common | |
1672 | * properties have been properly updated. | |
1673 | */ | |
1674 | WARN_ON_ONCE(plane->state->fb != plane_state->fb); | |
1675 | WARN_ON_ONCE(plane->state->crtc_x != plane_state->crtc_x); | |
1676 | WARN_ON_ONCE(plane->state->crtc_y != plane_state->crtc_y); | |
1677 | WARN_ON_ONCE(plane->state->src_x != plane_state->src_x); | |
1678 | WARN_ON_ONCE(plane->state->src_y != plane_state->src_y); | |
fef9df8b GP |
1679 | } |
1680 | } | |
1681 | EXPORT_SYMBOL(drm_atomic_helper_async_commit); | |
1682 | ||
9f2a7950 DV |
1683 | /** |
1684 | * drm_atomic_helper_commit - commit validated state object | |
1685 | * @dev: DRM device | |
1686 | * @state: the driver state object | |
1687 | * @nonblock: whether nonblocking behavior is requested. | |
1688 | * | |
1689 | * This function commits a with drm_atomic_helper_check() pre-validated state | |
1690 | * object. This can still fail when e.g. the framebuffer reservation fails. This | |
1691 | * function implements nonblocking commits, using | |
1692 | * drm_atomic_helper_setup_commit() and related functions. | |
1693 | * | |
9f2a7950 | 1694 | * Committing the actual hardware state is done through the |
1e55a53a | 1695 | * &drm_mode_config_helper_funcs.atomic_commit_tail callback, or its default |
6806cdf9 | 1696 | * implementation drm_atomic_helper_commit_tail(). |
6e48ae32 | 1697 | * |
c39032a8 | 1698 | * RETURNS: |
623369e5 DV |
1699 | * Zero for success or -errno. |
1700 | */ | |
1701 | int drm_atomic_helper_commit(struct drm_device *dev, | |
1702 | struct drm_atomic_state *state, | |
286dbb8d | 1703 | bool nonblock) |
623369e5 DV |
1704 | { |
1705 | int ret; | |
1706 | ||
fef9df8b GP |
1707 | if (state->async_update) { |
1708 | ret = drm_atomic_helper_prepare_planes(dev, state); | |
1709 | if (ret) | |
1710 | return ret; | |
1711 | ||
1712 | drm_atomic_helper_async_commit(dev, state); | |
1713 | drm_atomic_helper_cleanup_planes(dev, state); | |
1714 | ||
1715 | return 0; | |
1716 | } | |
1717 | ||
a095caa7 DV |
1718 | ret = drm_atomic_helper_setup_commit(state, nonblock); |
1719 | if (ret) | |
1720 | return ret; | |
1721 | ||
9f2a7950 DV |
1722 | INIT_WORK(&state->commit_work, commit_work); |
1723 | ||
623369e5 DV |
1724 | ret = drm_atomic_helper_prepare_planes(dev, state); |
1725 | if (ret) | |
1726 | return ret; | |
1727 | ||
f6ce410a GP |
1728 | if (!nonblock) { |
1729 | ret = drm_atomic_helper_wait_for_fences(dev, state, true); | |
c066d231 ML |
1730 | if (ret) |
1731 | goto err; | |
f6ce410a GP |
1732 | } |
1733 | ||
623369e5 DV |
1734 | /* |
1735 | * This is the point of no return - everything below never fails except | |
1736 | * when the hw goes bonghits. Which means we can commit the new state on | |
1737 | * the software side now. | |
1738 | */ | |
1739 | ||
c066d231 ML |
1740 | ret = drm_atomic_helper_swap_state(state, true); |
1741 | if (ret) | |
1742 | goto err; | |
623369e5 DV |
1743 | |
1744 | /* | |
1745 | * Everything below can be run asynchronously without the need to grab | |
f98bd3ef | 1746 | * any modeset locks at all under one condition: It must be guaranteed |
623369e5 DV |
1747 | * that the asynchronous work has either been cancelled (if the driver |
1748 | * supports it, which at least requires that the framebuffers get | |
1749 | * cleaned up with drm_atomic_helper_cleanup_planes()) or completed | |
1750 | * before the new state gets committed on the software side with | |
1751 | * drm_atomic_helper_swap_state(). | |
1752 | * | |
1753 | * This scheme allows new atomic state updates to be prepared and | |
1754 | * checked in parallel to the asynchronous completion of the previous | |
1755 | * update. Which is important since compositors need to figure out the | |
1756 | * composition of the next frame right after having submitted the | |
1757 | * current layout. | |
9f2a7950 DV |
1758 | * |
1759 | * NOTE: Commit work has multiple phases, first hardware commit, then | |
1760 | * cleanup. We want them to overlap, hence need system_unbound_wq to | |
a0689e34 | 1761 | * make sure work items don't artificially stall on each another. |
623369e5 DV |
1762 | */ |
1763 | ||
0853695c | 1764 | drm_atomic_state_get(state); |
9f2a7950 DV |
1765 | if (nonblock) |
1766 | queue_work(system_unbound_wq, &state->commit_work); | |
1767 | else | |
1768 | commit_tail(state); | |
623369e5 DV |
1769 | |
1770 | return 0; | |
c066d231 ML |
1771 | |
1772 | err: | |
1773 | drm_atomic_helper_cleanup_planes(dev, state); | |
1774 | return ret; | |
623369e5 DV |
1775 | } |
1776 | EXPORT_SYMBOL(drm_atomic_helper_commit); | |
1777 | ||
e8c833a7 | 1778 | /** |
286dbb8d | 1779 | * DOC: implementing nonblocking commit |
e8c833a7 | 1780 | * |
9f2a7950 | 1781 | * Nonblocking atomic commits have to be implemented in the following sequence: |
e8c833a7 DV |
1782 | * |
1783 | * 1. Run drm_atomic_helper_prepare_planes() first. This is the only function | |
1784 | * which commit needs to call which can fail, so we want to run it first and | |
1785 | * synchronously. | |
1786 | * | |
286dbb8d | 1787 | * 2. Synchronize with any outstanding nonblocking commit worker threads which |
e8c833a7 DV |
1788 | * might be affected the new state update. This can be done by either cancelling |
1789 | * or flushing the work items, depending upon whether the driver can deal with | |
1790 | * cancelled updates. Note that it is important to ensure that the framebuffer | |
1791 | * cleanup is still done when cancelling. | |
1792 | * | |
9f2a7950 DV |
1793 | * Asynchronous workers need to have sufficient parallelism to be able to run |
1794 | * different atomic commits on different CRTCs in parallel. The simplest way to | |
a0689e34 | 1795 | * achieve this is by running them on the &system_unbound_wq work queue. Note |
9f2a7950 DV |
1796 | * that drivers are not required to split up atomic commits and run an |
1797 | * individual commit in parallel - userspace is supposed to do that if it cares. | |
1798 | * But it might be beneficial to do that for modesets, since those necessarily | |
1799 | * must be done as one global operation, and enabling or disabling a CRTC can | |
1800 | * take a long time. But even that is not required. | |
e8c833a7 DV |
1801 | * |
1802 | * 3. The software state is updated synchronously with | |
26196f7e | 1803 | * drm_atomic_helper_swap_state(). Doing this under the protection of all modeset |
e8c833a7 | 1804 | * locks means concurrent callers never see inconsistent state. And doing this |
286dbb8d ML |
1805 | * while it's guaranteed that no relevant nonblocking worker runs means that |
1806 | * nonblocking workers do not need grab any locks. Actually they must not grab | |
1807 | * locks, for otherwise the work flushing will deadlock. | |
e8c833a7 DV |
1808 | * |
1809 | * 4. Schedule a work item to do all subsequent steps, using the split-out | |
1810 | * commit helpers: a) pre-plane commit b) plane commit c) post-plane commit and | |
1811 | * then cleaning up the framebuffers after the old framebuffer is no longer | |
1812 | * being displayed. | |
9f2a7950 DV |
1813 | * |
1814 | * The above scheme is implemented in the atomic helper libraries in | |
1815 | * drm_atomic_helper_commit() using a bunch of helper functions. See | |
1816 | * drm_atomic_helper_setup_commit() for a starting point. | |
e8c833a7 DV |
1817 | */ |
1818 | ||
a095caa7 DV |
1819 | static int stall_checks(struct drm_crtc *crtc, bool nonblock) |
1820 | { | |
1821 | struct drm_crtc_commit *commit, *stall_commit = NULL; | |
1822 | bool completed = true; | |
1823 | int i; | |
1824 | long ret = 0; | |
1825 | ||
1826 | spin_lock(&crtc->commit_lock); | |
1827 | i = 0; | |
1828 | list_for_each_entry(commit, &crtc->commit_list, commit_entry) { | |
1829 | if (i == 0) { | |
1830 | completed = try_wait_for_completion(&commit->flip_done); | |
1831 | /* Userspace is not allowed to get ahead of the previous | |
1832 | * commit with nonblocking ones. */ | |
1833 | if (!completed && nonblock) { | |
1834 | spin_unlock(&crtc->commit_lock); | |
1835 | return -EBUSY; | |
1836 | } | |
1837 | } else if (i == 1) { | |
f46640b9 | 1838 | stall_commit = drm_crtc_commit_get(commit); |
a095caa7 | 1839 | break; |
723c3e55 | 1840 | } |
a095caa7 DV |
1841 | |
1842 | i++; | |
1843 | } | |
1844 | spin_unlock(&crtc->commit_lock); | |
1845 | ||
1846 | if (!stall_commit) | |
1847 | return 0; | |
1848 | ||
1849 | /* We don't want to let commits get ahead of cleanup work too much, | |
1850 | * stalling on 2nd previous commit means triple-buffer won't ever stall. | |
1851 | */ | |
723c3e55 | 1852 | ret = wait_for_completion_interruptible_timeout(&stall_commit->cleanup_done, |
a095caa7 DV |
1853 | 10*HZ); |
1854 | if (ret == 0) | |
1855 | DRM_ERROR("[CRTC:%d:%s] cleanup_done timed out\n", | |
1856 | crtc->base.id, crtc->name); | |
1857 | ||
1858 | drm_crtc_commit_put(stall_commit); | |
1859 | ||
1860 | return ret < 0 ? ret : 0; | |
1861 | } | |
1862 | ||
899cc5f1 | 1863 | static void release_crtc_commit(struct completion *completion) |
24835e44 DV |
1864 | { |
1865 | struct drm_crtc_commit *commit = container_of(completion, | |
1866 | typeof(*commit), | |
1867 | flip_done); | |
1868 | ||
1869 | drm_crtc_commit_put(commit); | |
1870 | } | |
1871 | ||
21a01abb ML |
1872 | static void init_commit(struct drm_crtc_commit *commit, struct drm_crtc *crtc) |
1873 | { | |
1874 | init_completion(&commit->flip_done); | |
1875 | init_completion(&commit->hw_done); | |
1876 | init_completion(&commit->cleanup_done); | |
1877 | INIT_LIST_HEAD(&commit->commit_entry); | |
1878 | kref_init(&commit->ref); | |
1879 | commit->crtc = crtc; | |
1880 | } | |
1881 | ||
1882 | static struct drm_crtc_commit * | |
1883 | crtc_or_fake_commit(struct drm_atomic_state *state, struct drm_crtc *crtc) | |
1884 | { | |
1885 | if (crtc) { | |
1886 | struct drm_crtc_state *new_crtc_state; | |
1887 | ||
1888 | new_crtc_state = drm_atomic_get_new_crtc_state(state, crtc); | |
1889 | ||
1890 | return new_crtc_state->commit; | |
1891 | } | |
1892 | ||
1893 | if (!state->fake_commit) { | |
1894 | state->fake_commit = kzalloc(sizeof(*state->fake_commit), GFP_KERNEL); | |
1895 | if (!state->fake_commit) | |
1896 | return NULL; | |
1897 | ||
1898 | init_commit(state->fake_commit, NULL); | |
1899 | } | |
1900 | ||
1901 | return state->fake_commit; | |
1902 | } | |
1903 | ||
a095caa7 DV |
1904 | /** |
1905 | * drm_atomic_helper_setup_commit - setup possibly nonblocking commit | |
1906 | * @state: new modeset state to be committed | |
1907 | * @nonblock: whether nonblocking behavior is requested. | |
1908 | * | |
1909 | * This function prepares @state to be used by the atomic helper's support for | |
1910 | * nonblocking commits. Drivers using the nonblocking commit infrastructure | |
6806cdf9 DV |
1911 | * should always call this function from their |
1912 | * &drm_mode_config_funcs.atomic_commit hook. | |
a095caa7 DV |
1913 | * |
1914 | * To be able to use this support drivers need to use a few more helper | |
1915 | * functions. drm_atomic_helper_wait_for_dependencies() must be called before | |
1916 | * actually committing the hardware state, and for nonblocking commits this call | |
1917 | * must be placed in the async worker. See also drm_atomic_helper_swap_state() | |
1e55a53a | 1918 | * and its stall parameter, for when a driver's commit hooks look at the |
6806cdf9 | 1919 | * &drm_crtc.state, &drm_plane.state or &drm_connector.state pointer directly. |
a095caa7 DV |
1920 | * |
1921 | * Completion of the hardware commit step must be signalled using | |
1922 | * drm_atomic_helper_commit_hw_done(). After this step the driver is not allowed | |
1923 | * to read or change any permanent software or hardware modeset state. The only | |
1924 | * exception is state protected by other means than &drm_modeset_lock locks. | |
1925 | * Only the free standing @state with pointers to the old state structures can | |
1926 | * be inspected, e.g. to clean up old buffers using | |
1927 | * drm_atomic_helper_cleanup_planes(). | |
1928 | * | |
1929 | * At the very end, before cleaning up @state drivers must call | |
1930 | * drm_atomic_helper_commit_cleanup_done(). | |
1931 | * | |
1932 | * This is all implemented by in drm_atomic_helper_commit(), giving drivers a | |
9ac07815 | 1933 | * complete and easy-to-use default implementation of the atomic_commit() hook. |
a095caa7 DV |
1934 | * |
1935 | * The tracking of asynchronously executed and still pending commits is done | |
1936 | * using the core structure &drm_crtc_commit. | |
1937 | * | |
1938 | * By default there's no need to clean up resources allocated by this function | |
1939 | * explicitly: drm_atomic_state_default_clear() will take care of that | |
1940 | * automatically. | |
1941 | * | |
1942 | * Returns: | |
1943 | * | |
1944 | * 0 on success. -EBUSY when userspace schedules nonblocking commits too fast, | |
1945 | * -ENOMEM on allocation failures and -EINTR when a signal is pending. | |
1946 | */ | |
1947 | int drm_atomic_helper_setup_commit(struct drm_atomic_state *state, | |
1948 | bool nonblock) | |
1949 | { | |
1950 | struct drm_crtc *crtc; | |
415c3ac3 | 1951 | struct drm_crtc_state *old_crtc_state, *new_crtc_state; |
21a01abb ML |
1952 | struct drm_connector *conn; |
1953 | struct drm_connector_state *old_conn_state, *new_conn_state; | |
1954 | struct drm_plane *plane; | |
1955 | struct drm_plane_state *old_plane_state, *new_plane_state; | |
a095caa7 DV |
1956 | struct drm_crtc_commit *commit; |
1957 | int i, ret; | |
1958 | ||
415c3ac3 | 1959 | for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) { |
a095caa7 DV |
1960 | commit = kzalloc(sizeof(*commit), GFP_KERNEL); |
1961 | if (!commit) | |
1962 | return -ENOMEM; | |
1963 | ||
21a01abb | 1964 | init_commit(commit, crtc); |
a095caa7 | 1965 | |
163bcc2c | 1966 | new_crtc_state->commit = commit; |
a095caa7 DV |
1967 | |
1968 | ret = stall_checks(crtc, nonblock); | |
1969 | if (ret) | |
1970 | return ret; | |
1971 | ||
1972 | /* Drivers only send out events when at least either current or | |
1973 | * new CRTC state is active. Complete right away if everything | |
1974 | * stays off. */ | |
415c3ac3 | 1975 | if (!old_crtc_state->active && !new_crtc_state->active) { |
a095caa7 DV |
1976 | complete_all(&commit->flip_done); |
1977 | continue; | |
1978 | } | |
1979 | ||
1980 | /* Legacy cursor updates are fully unsynced. */ | |
1981 | if (state->legacy_cursor_update) { | |
1982 | complete_all(&commit->flip_done); | |
1983 | continue; | |
1984 | } | |
1985 | ||
415c3ac3 | 1986 | if (!new_crtc_state->event) { |
a095caa7 DV |
1987 | commit->event = kzalloc(sizeof(*commit->event), |
1988 | GFP_KERNEL); | |
1989 | if (!commit->event) | |
1990 | return -ENOMEM; | |
1991 | ||
415c3ac3 | 1992 | new_crtc_state->event = commit->event; |
a095caa7 DV |
1993 | } |
1994 | ||
415c3ac3 ML |
1995 | new_crtc_state->event->base.completion = &commit->flip_done; |
1996 | new_crtc_state->event->base.completion_release = release_crtc_commit; | |
24835e44 | 1997 | drm_crtc_commit_get(commit); |
1c6ceeee LSL |
1998 | |
1999 | commit->abort_completion = true; | |
4364bcb2 LL |
2000 | |
2001 | state->crtcs[i].commit = commit; | |
2002 | drm_crtc_commit_get(commit); | |
a095caa7 DV |
2003 | } |
2004 | ||
21a01abb | 2005 | for_each_oldnew_connector_in_state(state, conn, old_conn_state, new_conn_state, i) { |
21a01abb ML |
2006 | /* Userspace is not allowed to get ahead of the previous |
2007 | * commit with nonblocking ones. */ | |
2008 | if (nonblock && old_conn_state->commit && | |
2009 | !try_wait_for_completion(&old_conn_state->commit->flip_done)) | |
2010 | return -EBUSY; | |
a095caa7 | 2011 | |
1f2d9bdc DV |
2012 | /* Always track connectors explicitly for e.g. link retraining. */ |
2013 | commit = crtc_or_fake_commit(state, new_conn_state->crtc ?: old_conn_state->crtc); | |
21a01abb ML |
2014 | if (!commit) |
2015 | return -ENOMEM; | |
a095caa7 | 2016 | |
21a01abb ML |
2017 | new_conn_state->commit = drm_crtc_commit_get(commit); |
2018 | } | |
2019 | ||
2020 | for_each_oldnew_plane_in_state(state, plane, old_plane_state, new_plane_state, i) { | |
21a01abb ML |
2021 | /* Userspace is not allowed to get ahead of the previous |
2022 | * commit with nonblocking ones. */ | |
2023 | if (nonblock && old_plane_state->commit && | |
2024 | !try_wait_for_completion(&old_plane_state->commit->flip_done)) | |
2025 | return -EBUSY; | |
2026 | ||
1f2d9bdc | 2027 | /* Always track planes explicitly for async pageflip support. */ |
4edd6084 | 2028 | commit = crtc_or_fake_commit(state, new_plane_state->crtc ?: old_plane_state->crtc); |
21a01abb ML |
2029 | if (!commit) |
2030 | return -ENOMEM; | |
2031 | ||
2032 | new_plane_state->commit = drm_crtc_commit_get(commit); | |
a095caa7 DV |
2033 | } |
2034 | ||
a095caa7 | 2035 | return 0; |
a095caa7 | 2036 | } |
a095caa7 | 2037 | EXPORT_SYMBOL(drm_atomic_helper_setup_commit); |
a095caa7 DV |
2038 | |
2039 | /** | |
2040 | * drm_atomic_helper_wait_for_dependencies - wait for required preceeding commits | |
1ea0c02e | 2041 | * @old_state: atomic state object with old state structures |
a095caa7 DV |
2042 | * |
2043 | * This function waits for all preceeding commits that touch the same CRTC as | |
1ea0c02e | 2044 | * @old_state to both be committed to the hardware (as signalled by |
a095caa7 | 2045 | * drm_atomic_helper_commit_hw_done) and executed by the hardware (as signalled |
277b09cf | 2046 | * by calling drm_crtc_send_vblank_event() on the &drm_crtc_state.event). |
a095caa7 DV |
2047 | * |
2048 | * This is part of the atomic helper support for nonblocking commits, see | |
2049 | * drm_atomic_helper_setup_commit() for an overview. | |
2050 | */ | |
1ea0c02e | 2051 | void drm_atomic_helper_wait_for_dependencies(struct drm_atomic_state *old_state) |
a095caa7 DV |
2052 | { |
2053 | struct drm_crtc *crtc; | |
163bcc2c | 2054 | struct drm_crtc_state *old_crtc_state; |
21a01abb ML |
2055 | struct drm_plane *plane; |
2056 | struct drm_plane_state *old_plane_state; | |
2057 | struct drm_connector *conn; | |
2058 | struct drm_connector_state *old_conn_state; | |
a095caa7 DV |
2059 | struct drm_crtc_commit *commit; |
2060 | int i; | |
2061 | long ret; | |
2062 | ||
163bcc2c ML |
2063 | for_each_old_crtc_in_state(old_state, crtc, old_crtc_state, i) { |
2064 | commit = old_crtc_state->commit; | |
a095caa7 DV |
2065 | |
2066 | if (!commit) | |
2067 | continue; | |
2068 | ||
2069 | ret = wait_for_completion_timeout(&commit->hw_done, | |
2070 | 10*HZ); | |
2071 | if (ret == 0) | |
2072 | DRM_ERROR("[CRTC:%d:%s] hw_done timed out\n", | |
2073 | crtc->base.id, crtc->name); | |
2074 | ||
2075 | /* Currently no support for overwriting flips, hence | |
2076 | * stall for previous one to execute completely. */ | |
2077 | ret = wait_for_completion_timeout(&commit->flip_done, | |
2078 | 10*HZ); | |
2079 | if (ret == 0) | |
2080 | DRM_ERROR("[CRTC:%d:%s] flip_done timed out\n", | |
2081 | crtc->base.id, crtc->name); | |
a095caa7 | 2082 | } |
21a01abb ML |
2083 | |
2084 | for_each_old_connector_in_state(old_state, conn, old_conn_state, i) { | |
2085 | commit = old_conn_state->commit; | |
a095caa7 | 2086 | |
21a01abb ML |
2087 | if (!commit) |
2088 | continue; | |
2089 | ||
2090 | ret = wait_for_completion_timeout(&commit->hw_done, | |
2091 | 10*HZ); | |
2092 | if (ret == 0) | |
2093 | DRM_ERROR("[CONNECTOR:%d:%s] hw_done timed out\n", | |
2094 | conn->base.id, conn->name); | |
2095 | ||
2096 | /* Currently no support for overwriting flips, hence | |
2097 | * stall for previous one to execute completely. */ | |
2098 | ret = wait_for_completion_timeout(&commit->flip_done, | |
2099 | 10*HZ); | |
2100 | if (ret == 0) | |
2101 | DRM_ERROR("[CONNECTOR:%d:%s] flip_done timed out\n", | |
2102 | conn->base.id, conn->name); | |
2103 | } | |
2104 | ||
2105 | for_each_old_plane_in_state(old_state, plane, old_plane_state, i) { | |
2106 | commit = old_plane_state->commit; | |
2107 | ||
2108 | if (!commit) | |
2109 | continue; | |
2110 | ||
2111 | ret = wait_for_completion_timeout(&commit->hw_done, | |
2112 | 10*HZ); | |
2113 | if (ret == 0) | |
2114 | DRM_ERROR("[PLANE:%d:%s] hw_done timed out\n", | |
2115 | plane->base.id, plane->name); | |
2116 | ||
2117 | /* Currently no support for overwriting flips, hence | |
2118 | * stall for previous one to execute completely. */ | |
2119 | ret = wait_for_completion_timeout(&commit->flip_done, | |
2120 | 10*HZ); | |
2121 | if (ret == 0) | |
2122 | DRM_ERROR("[PLANE:%d:%s] flip_done timed out\n", | |
2123 | plane->base.id, plane->name); | |
a095caa7 DV |
2124 | } |
2125 | } | |
2126 | EXPORT_SYMBOL(drm_atomic_helper_wait_for_dependencies); | |
2127 | ||
b25c60af BB |
2128 | /** |
2129 | * drm_atomic_helper_fake_vblank - fake VBLANK events if needed | |
2130 | * @old_state: atomic state object with old state structures | |
2131 | * | |
2132 | * This function walks all CRTCs and fake VBLANK events on those with | |
2133 | * &drm_crtc_state.no_vblank set to true and &drm_crtc_state.event != NULL. | |
2134 | * The primary use of this function is writeback connectors working in oneshot | |
2135 | * mode and faking VBLANK events. In this case they only fake the VBLANK event | |
2136 | * when a job is queued, and any change to the pipeline that does not touch the | |
2137 | * connector is leading to timeouts when calling | |
2138 | * drm_atomic_helper_wait_for_vblanks() or | |
2139 | * drm_atomic_helper_wait_for_flip_done(). | |
2140 | * | |
2141 | * This is part of the atomic helper support for nonblocking commits, see | |
2142 | * drm_atomic_helper_setup_commit() for an overview. | |
2143 | */ | |
2144 | void drm_atomic_helper_fake_vblank(struct drm_atomic_state *old_state) | |
2145 | { | |
2146 | struct drm_crtc_state *new_crtc_state; | |
2147 | struct drm_crtc *crtc; | |
2148 | int i; | |
2149 | ||
2150 | for_each_new_crtc_in_state(old_state, crtc, new_crtc_state, i) { | |
2151 | unsigned long flags; | |
2152 | ||
2153 | if (!new_crtc_state->no_vblank) | |
2154 | continue; | |
2155 | ||
2156 | spin_lock_irqsave(&old_state->dev->event_lock, flags); | |
2157 | if (new_crtc_state->event) { | |
2158 | drm_crtc_send_vblank_event(crtc, | |
2159 | new_crtc_state->event); | |
2160 | new_crtc_state->event = NULL; | |
2161 | } | |
2162 | spin_unlock_irqrestore(&old_state->dev->event_lock, flags); | |
2163 | } | |
2164 | } | |
2165 | EXPORT_SYMBOL(drm_atomic_helper_fake_vblank); | |
2166 | ||
a095caa7 DV |
2167 | /** |
2168 | * drm_atomic_helper_commit_hw_done - setup possible nonblocking commit | |
1ea0c02e | 2169 | * @old_state: atomic state object with old state structures |
a095caa7 DV |
2170 | * |
2171 | * This function is used to signal completion of the hardware commit step. After | |
2172 | * this step the driver is not allowed to read or change any permanent software | |
2173 | * or hardware modeset state. The only exception is state protected by other | |
2174 | * means than &drm_modeset_lock locks. | |
2175 | * | |
2176 | * Drivers should try to postpone any expensive or delayed cleanup work after | |
2177 | * this function is called. | |
2178 | * | |
2179 | * This is part of the atomic helper support for nonblocking commits, see | |
2180 | * drm_atomic_helper_setup_commit() for an overview. | |
2181 | */ | |
1ea0c02e | 2182 | void drm_atomic_helper_commit_hw_done(struct drm_atomic_state *old_state) |
a095caa7 DV |
2183 | { |
2184 | struct drm_crtc *crtc; | |
163bcc2c | 2185 | struct drm_crtc_state *old_crtc_state, *new_crtc_state; |
a095caa7 DV |
2186 | struct drm_crtc_commit *commit; |
2187 | int i; | |
2188 | ||
163bcc2c ML |
2189 | for_each_oldnew_crtc_in_state(old_state, crtc, old_crtc_state, new_crtc_state, i) { |
2190 | commit = new_crtc_state->commit; | |
a095caa7 DV |
2191 | if (!commit) |
2192 | continue; | |
2193 | ||
163bcc2c ML |
2194 | /* |
2195 | * copy new_crtc_state->commit to old_crtc_state->commit, | |
2196 | * it's unsafe to touch new_crtc_state after hw_done, | |
2197 | * but we still need to do so in cleanup_done(). | |
2198 | */ | |
2199 | if (old_crtc_state->commit) | |
2200 | drm_crtc_commit_put(old_crtc_state->commit); | |
2201 | ||
2202 | old_crtc_state->commit = drm_crtc_commit_get(commit); | |
2203 | ||
a095caa7 | 2204 | /* backend must have consumed any event by now */ |
415c3ac3 | 2205 | WARN_ON(new_crtc_state->event); |
a095caa7 | 2206 | complete_all(&commit->hw_done); |
a095caa7 | 2207 | } |
21a01abb ML |
2208 | |
2209 | if (old_state->fake_commit) { | |
2210 | complete_all(&old_state->fake_commit->hw_done); | |
2211 | complete_all(&old_state->fake_commit->flip_done); | |
2212 | } | |
a095caa7 DV |
2213 | } |
2214 | EXPORT_SYMBOL(drm_atomic_helper_commit_hw_done); | |
2215 | ||
2216 | /** | |
2217 | * drm_atomic_helper_commit_cleanup_done - signal completion of commit | |
1ea0c02e | 2218 | * @old_state: atomic state object with old state structures |
a095caa7 | 2219 | * |
1ea0c02e DV |
2220 | * This signals completion of the atomic update @old_state, including any |
2221 | * cleanup work. If used, it must be called right before calling | |
0853695c | 2222 | * drm_atomic_state_put(). |
a095caa7 DV |
2223 | * |
2224 | * This is part of the atomic helper support for nonblocking commits, see | |
2225 | * drm_atomic_helper_setup_commit() for an overview. | |
2226 | */ | |
1ea0c02e | 2227 | void drm_atomic_helper_commit_cleanup_done(struct drm_atomic_state *old_state) |
a095caa7 DV |
2228 | { |
2229 | struct drm_crtc *crtc; | |
163bcc2c | 2230 | struct drm_crtc_state *old_crtc_state; |
a095caa7 DV |
2231 | struct drm_crtc_commit *commit; |
2232 | int i; | |
a095caa7 | 2233 | |
163bcc2c ML |
2234 | for_each_old_crtc_in_state(old_state, crtc, old_crtc_state, i) { |
2235 | commit = old_crtc_state->commit; | |
a095caa7 DV |
2236 | if (WARN_ON(!commit)) |
2237 | continue; | |
2238 | ||
a095caa7 DV |
2239 | complete_all(&commit->cleanup_done); |
2240 | WARN_ON(!try_wait_for_completion(&commit->hw_done)); | |
2241 | ||
7141fd3e | 2242 | spin_lock(&crtc->commit_lock); |
a095caa7 DV |
2243 | list_del(&commit->commit_entry); |
2244 | spin_unlock(&crtc->commit_lock); | |
2245 | } | |
21a01abb | 2246 | |
10a599fa | 2247 | if (old_state->fake_commit) { |
21a01abb | 2248 | complete_all(&old_state->fake_commit->cleanup_done); |
10a599fa VS |
2249 | WARN_ON(!try_wait_for_completion(&old_state->fake_commit->hw_done)); |
2250 | } | |
a095caa7 DV |
2251 | } |
2252 | EXPORT_SYMBOL(drm_atomic_helper_commit_cleanup_done); | |
2253 | ||
c2fcd274 | 2254 | /** |
2e3afd47 | 2255 | * drm_atomic_helper_prepare_planes - prepare plane resources before commit |
c2fcd274 | 2256 | * @dev: DRM device |
2e3afd47 | 2257 | * @state: atomic state object with new state structures |
c2fcd274 DV |
2258 | * |
2259 | * This function prepares plane state, specifically framebuffers, for the new | |
6806cdf9 DV |
2260 | * configuration, by calling &drm_plane_helper_funcs.prepare_fb. If any failure |
2261 | * is encountered this function will call &drm_plane_helper_funcs.cleanup_fb on | |
2262 | * any already successfully prepared framebuffer. | |
c2fcd274 DV |
2263 | * |
2264 | * Returns: | |
2265 | * 0 on success, negative error code on failure. | |
2266 | */ | |
2267 | int drm_atomic_helper_prepare_planes(struct drm_device *dev, | |
2268 | struct drm_atomic_state *state) | |
2269 | { | |
9d2230dc LP |
2270 | struct drm_connector *connector; |
2271 | struct drm_connector_state *new_conn_state; | |
be9174a4 | 2272 | struct drm_plane *plane; |
415c3ac3 | 2273 | struct drm_plane_state *new_plane_state; |
be9174a4 | 2274 | int ret, i, j; |
c2fcd274 | 2275 | |
9d2230dc LP |
2276 | for_each_new_connector_in_state(state, connector, new_conn_state, i) { |
2277 | if (!new_conn_state->writeback_job) | |
2278 | continue; | |
2279 | ||
2280 | ret = drm_writeback_prepare_job(new_conn_state->writeback_job); | |
2281 | if (ret < 0) | |
2282 | return ret; | |
2283 | } | |
2284 | ||
415c3ac3 | 2285 | for_each_new_plane_in_state(state, plane, new_plane_state, i) { |
b5ceff20 | 2286 | const struct drm_plane_helper_funcs *funcs; |
c2fcd274 DV |
2287 | |
2288 | funcs = plane->helper_private; | |
2289 | ||
844f9111 | 2290 | if (funcs->prepare_fb) { |
415c3ac3 | 2291 | ret = funcs->prepare_fb(plane, new_plane_state); |
c2fcd274 DV |
2292 | if (ret) |
2293 | goto fail; | |
2294 | } | |
2295 | } | |
2296 | ||
2297 | return 0; | |
2298 | ||
2299 | fail: | |
415c3ac3 | 2300 | for_each_new_plane_in_state(state, plane, new_plane_state, j) { |
b5ceff20 | 2301 | const struct drm_plane_helper_funcs *funcs; |
c2fcd274 | 2302 | |
be9174a4 | 2303 | if (j >= i) |
c2fcd274 DV |
2304 | continue; |
2305 | ||
2306 | funcs = plane->helper_private; | |
2307 | ||
844f9111 | 2308 | if (funcs->cleanup_fb) |
415c3ac3 | 2309 | funcs->cleanup_fb(plane, new_plane_state); |
c2fcd274 DV |
2310 | } |
2311 | ||
2312 | return ret; | |
2313 | } | |
2314 | EXPORT_SYMBOL(drm_atomic_helper_prepare_planes); | |
2315 | ||
7135ac54 | 2316 | static bool plane_crtc_active(const struct drm_plane_state *state) |
aef9dbb8 DV |
2317 | { |
2318 | return state->crtc && state->crtc->state->active; | |
2319 | } | |
2320 | ||
c2fcd274 DV |
2321 | /** |
2322 | * drm_atomic_helper_commit_planes - commit plane state | |
2323 | * @dev: DRM device | |
b0fcfc89 | 2324 | * @old_state: atomic state object with old state structures |
2b58e98d | 2325 | * @flags: flags for committing plane state |
c2fcd274 DV |
2326 | * |
2327 | * This function commits the new plane state using the plane and atomic helper | |
2328 | * functions for planes and crtcs. It assumes that the atomic state has already | |
2329 | * been pushed into the relevant object state pointers, since this step can no | |
2330 | * longer fail. | |
2331 | * | |
b0fcfc89 | 2332 | * It still requires the global state object @old_state to know which planes and |
c2fcd274 | 2333 | * crtcs need to be updated though. |
de28d021 ML |
2334 | * |
2335 | * Note that this function does all plane updates across all CRTCs in one step. | |
2336 | * If the hardware can't support this approach look at | |
2337 | * drm_atomic_helper_commit_planes_on_crtc() instead. | |
6e48ae32 DV |
2338 | * |
2339 | * Plane parameters can be updated by applications while the associated CRTC is | |
2340 | * disabled. The DRM/KMS core will store the parameters in the plane state, | |
2341 | * which will be available to the driver when the CRTC is turned on. As a result | |
2342 | * most drivers don't need to be immediately notified of plane updates for a | |
2343 | * disabled CRTC. | |
2344 | * | |
2b58e98d LY |
2345 | * Unless otherwise needed, drivers are advised to set the ACTIVE_ONLY flag in |
2346 | * @flags in order not to receive plane update notifications related to a | |
2347 | * disabled CRTC. This avoids the need to manually ignore plane updates in | |
6e48ae32 DV |
2348 | * driver code when the driver and/or hardware can't or just don't need to deal |
2349 | * with updates on disabled CRTCs, for example when supporting runtime PM. | |
2350 | * | |
2b58e98d LY |
2351 | * Drivers may set the NO_DISABLE_AFTER_MODESET flag in @flags if the relevant |
2352 | * display controllers require to disable a CRTC's planes when the CRTC is | |
6806cdf9 DV |
2353 | * disabled. This function would skip the &drm_plane_helper_funcs.atomic_disable |
2354 | * call for a plane if the CRTC of the old plane state needs a modesetting | |
2355 | * operation. Of course, the drivers need to disable the planes in their CRTC | |
2356 | * disable callbacks since no one else would do that. | |
2b58e98d LY |
2357 | * |
2358 | * The drm_atomic_helper_commit() default implementation doesn't set the | |
2359 | * ACTIVE_ONLY flag to most closely match the behaviour of the legacy helpers. | |
2360 | * This should not be copied blindly by drivers. | |
c2fcd274 DV |
2361 | */ |
2362 | void drm_atomic_helper_commit_planes(struct drm_device *dev, | |
aef9dbb8 | 2363 | struct drm_atomic_state *old_state, |
2b58e98d | 2364 | uint32_t flags) |
c2fcd274 | 2365 | { |
df63b999 | 2366 | struct drm_crtc *crtc; |
415c3ac3 | 2367 | struct drm_crtc_state *old_crtc_state, *new_crtc_state; |
df63b999 | 2368 | struct drm_plane *plane; |
415c3ac3 | 2369 | struct drm_plane_state *old_plane_state, *new_plane_state; |
c2fcd274 | 2370 | int i; |
2b58e98d LY |
2371 | bool active_only = flags & DRM_PLANE_COMMIT_ACTIVE_ONLY; |
2372 | bool no_disable = flags & DRM_PLANE_COMMIT_NO_DISABLE_AFTER_MODESET; | |
c2fcd274 | 2373 | |
415c3ac3 | 2374 | for_each_oldnew_crtc_in_state(old_state, crtc, old_crtc_state, new_crtc_state, i) { |
b5ceff20 | 2375 | const struct drm_crtc_helper_funcs *funcs; |
c2fcd274 DV |
2376 | |
2377 | funcs = crtc->helper_private; | |
2378 | ||
2379 | if (!funcs || !funcs->atomic_begin) | |
2380 | continue; | |
2381 | ||
415c3ac3 | 2382 | if (active_only && !new_crtc_state->active) |
aef9dbb8 DV |
2383 | continue; |
2384 | ||
613d2b27 | 2385 | funcs->atomic_begin(crtc, old_crtc_state); |
c2fcd274 DV |
2386 | } |
2387 | ||
415c3ac3 | 2388 | for_each_oldnew_plane_in_state(old_state, plane, old_plane_state, new_plane_state, i) { |
b5ceff20 | 2389 | const struct drm_plane_helper_funcs *funcs; |
216c59d6 | 2390 | bool disabling; |
c2fcd274 DV |
2391 | |
2392 | funcs = plane->helper_private; | |
2393 | ||
3cad4b68 | 2394 | if (!funcs) |
c2fcd274 DV |
2395 | continue; |
2396 | ||
51ffa12d ML |
2397 | disabling = drm_atomic_plane_disabling(old_plane_state, |
2398 | new_plane_state); | |
216c59d6 LP |
2399 | |
2400 | if (active_only) { | |
2401 | /* | |
2402 | * Skip planes related to inactive CRTCs. If the plane | |
2403 | * is enabled use the state of the current CRTC. If the | |
2404 | * plane is being disabled use the state of the old | |
2405 | * CRTC to avoid skipping planes being disabled on an | |
2406 | * active CRTC. | |
2407 | */ | |
415c3ac3 | 2408 | if (!disabling && !plane_crtc_active(new_plane_state)) |
216c59d6 LP |
2409 | continue; |
2410 | if (disabling && !plane_crtc_active(old_plane_state)) | |
2411 | continue; | |
2412 | } | |
aef9dbb8 | 2413 | |
407b8bd9 TR |
2414 | /* |
2415 | * Special-case disabling the plane if drivers support it. | |
2416 | */ | |
2b58e98d LY |
2417 | if (disabling && funcs->atomic_disable) { |
2418 | struct drm_crtc_state *crtc_state; | |
2419 | ||
2420 | crtc_state = old_plane_state->crtc->state; | |
2421 | ||
2422 | if (drm_atomic_crtc_needs_modeset(crtc_state) && | |
2423 | no_disable) | |
2424 | continue; | |
2425 | ||
407b8bd9 | 2426 | funcs->atomic_disable(plane, old_plane_state); |
415c3ac3 | 2427 | } else if (new_plane_state->crtc || disabling) { |
407b8bd9 | 2428 | funcs->atomic_update(plane, old_plane_state); |
2b58e98d | 2429 | } |
c2fcd274 DV |
2430 | } |
2431 | ||
415c3ac3 | 2432 | for_each_oldnew_crtc_in_state(old_state, crtc, old_crtc_state, new_crtc_state, i) { |
b5ceff20 | 2433 | const struct drm_crtc_helper_funcs *funcs; |
c2fcd274 DV |
2434 | |
2435 | funcs = crtc->helper_private; | |
2436 | ||
2437 | if (!funcs || !funcs->atomic_flush) | |
2438 | continue; | |
2439 | ||
415c3ac3 | 2440 | if (active_only && !new_crtc_state->active) |
aef9dbb8 DV |
2441 | continue; |
2442 | ||
613d2b27 | 2443 | funcs->atomic_flush(crtc, old_crtc_state); |
c2fcd274 DV |
2444 | } |
2445 | } | |
2446 | EXPORT_SYMBOL(drm_atomic_helper_commit_planes); | |
2447 | ||
de28d021 ML |
2448 | /** |
2449 | * drm_atomic_helper_commit_planes_on_crtc - commit plane state for a crtc | |
2450 | * @old_crtc_state: atomic state object with the old crtc state | |
2451 | * | |
2452 | * This function commits the new plane state using the plane and atomic helper | |
2453 | * functions for planes on the specific crtc. It assumes that the atomic state | |
2454 | * has already been pushed into the relevant object state pointers, since this | |
2455 | * step can no longer fail. | |
2456 | * | |
2457 | * This function is useful when plane updates should be done crtc-by-crtc | |
2458 | * instead of one global step like drm_atomic_helper_commit_planes() does. | |
2459 | * | |
2460 | * This function can only be savely used when planes are not allowed to move | |
2461 | * between different CRTCs because this function doesn't handle inter-CRTC | |
2462 | * depencies. Callers need to ensure that either no such depencies exist, | |
2463 | * resolve them through ordering of commit calls or through some other means. | |
2464 | */ | |
2465 | void | |
2466 | drm_atomic_helper_commit_planes_on_crtc(struct drm_crtc_state *old_crtc_state) | |
2467 | { | |
2468 | const struct drm_crtc_helper_funcs *crtc_funcs; | |
2469 | struct drm_crtc *crtc = old_crtc_state->crtc; | |
2470 | struct drm_atomic_state *old_state = old_crtc_state->state; | |
e35a2f9a VS |
2471 | struct drm_crtc_state *new_crtc_state = |
2472 | drm_atomic_get_new_crtc_state(old_state, crtc); | |
de28d021 ML |
2473 | struct drm_plane *plane; |
2474 | unsigned plane_mask; | |
2475 | ||
2476 | plane_mask = old_crtc_state->plane_mask; | |
e35a2f9a | 2477 | plane_mask |= new_crtc_state->plane_mask; |
de28d021 ML |
2478 | |
2479 | crtc_funcs = crtc->helper_private; | |
2480 | if (crtc_funcs && crtc_funcs->atomic_begin) | |
613d2b27 | 2481 | crtc_funcs->atomic_begin(crtc, old_crtc_state); |
de28d021 ML |
2482 | |
2483 | drm_for_each_plane_mask(plane, crtc->dev, plane_mask) { | |
2484 | struct drm_plane_state *old_plane_state = | |
b4d93679 | 2485 | drm_atomic_get_old_plane_state(old_state, plane); |
e35a2f9a VS |
2486 | struct drm_plane_state *new_plane_state = |
2487 | drm_atomic_get_new_plane_state(old_state, plane); | |
de28d021 ML |
2488 | const struct drm_plane_helper_funcs *plane_funcs; |
2489 | ||
2490 | plane_funcs = plane->helper_private; | |
2491 | ||
2492 | if (!old_plane_state || !plane_funcs) | |
2493 | continue; | |
2494 | ||
e35a2f9a VS |
2495 | WARN_ON(new_plane_state->crtc && |
2496 | new_plane_state->crtc != crtc); | |
de28d021 | 2497 | |
e35a2f9a | 2498 | if (drm_atomic_plane_disabling(old_plane_state, new_plane_state) && |
de28d021 ML |
2499 | plane_funcs->atomic_disable) |
2500 | plane_funcs->atomic_disable(plane, old_plane_state); | |
e35a2f9a VS |
2501 | else if (new_plane_state->crtc || |
2502 | drm_atomic_plane_disabling(old_plane_state, new_plane_state)) | |
de28d021 ML |
2503 | plane_funcs->atomic_update(plane, old_plane_state); |
2504 | } | |
2505 | ||
2506 | if (crtc_funcs && crtc_funcs->atomic_flush) | |
613d2b27 | 2507 | crtc_funcs->atomic_flush(crtc, old_crtc_state); |
de28d021 ML |
2508 | } |
2509 | EXPORT_SYMBOL(drm_atomic_helper_commit_planes_on_crtc); | |
2510 | ||
6753ba97 JS |
2511 | /** |
2512 | * drm_atomic_helper_disable_planes_on_crtc - helper to disable CRTC's planes | |
28500291 | 2513 | * @old_crtc_state: atomic state object with the old CRTC state |
6753ba97 JS |
2514 | * @atomic: if set, synchronize with CRTC's atomic_begin/flush hooks |
2515 | * | |
2516 | * Disables all planes associated with the given CRTC. This can be | |
28500291 LY |
2517 | * used for instance in the CRTC helper atomic_disable callback to disable |
2518 | * all planes. | |
6753ba97 JS |
2519 | * |
2520 | * If the atomic-parameter is set the function calls the CRTC's | |
2521 | * atomic_begin hook before and atomic_flush hook after disabling the | |
2522 | * planes. | |
2523 | * | |
2524 | * It is a bug to call this function without having implemented the | |
6806cdf9 | 2525 | * &drm_plane_helper_funcs.atomic_disable plane hook. |
6753ba97 | 2526 | */ |
28500291 LY |
2527 | void |
2528 | drm_atomic_helper_disable_planes_on_crtc(struct drm_crtc_state *old_crtc_state, | |
2529 | bool atomic) | |
6753ba97 | 2530 | { |
28500291 | 2531 | struct drm_crtc *crtc = old_crtc_state->crtc; |
6753ba97 JS |
2532 | const struct drm_crtc_helper_funcs *crtc_funcs = |
2533 | crtc->helper_private; | |
2534 | struct drm_plane *plane; | |
2535 | ||
2536 | if (atomic && crtc_funcs && crtc_funcs->atomic_begin) | |
2537 | crtc_funcs->atomic_begin(crtc, NULL); | |
2538 | ||
28500291 | 2539 | drm_atomic_crtc_state_for_each_plane(plane, old_crtc_state) { |
6753ba97 JS |
2540 | const struct drm_plane_helper_funcs *plane_funcs = |
2541 | plane->helper_private; | |
2542 | ||
28500291 | 2543 | if (!plane_funcs) |
6753ba97 JS |
2544 | continue; |
2545 | ||
2546 | WARN_ON(!plane_funcs->atomic_disable); | |
2547 | if (plane_funcs->atomic_disable) | |
2548 | plane_funcs->atomic_disable(plane, NULL); | |
2549 | } | |
2550 | ||
2551 | if (atomic && crtc_funcs && crtc_funcs->atomic_flush) | |
2552 | crtc_funcs->atomic_flush(crtc, NULL); | |
2553 | } | |
2554 | EXPORT_SYMBOL(drm_atomic_helper_disable_planes_on_crtc); | |
2555 | ||
c2fcd274 DV |
2556 | /** |
2557 | * drm_atomic_helper_cleanup_planes - cleanup plane resources after commit | |
2558 | * @dev: DRM device | |
2559 | * @old_state: atomic state object with old state structures | |
2560 | * | |
2561 | * This function cleans up plane state, specifically framebuffers, from the old | |
2562 | * configuration. Hence the old configuration must be perserved in @old_state to | |
2563 | * be able to call this function. | |
2564 | * | |
2565 | * This function must also be called on the new state when the atomic update | |
2566 | * fails at any point after calling drm_atomic_helper_prepare_planes(). | |
2567 | */ | |
2568 | void drm_atomic_helper_cleanup_planes(struct drm_device *dev, | |
2569 | struct drm_atomic_state *old_state) | |
2570 | { | |
df63b999 | 2571 | struct drm_plane *plane; |
415c3ac3 | 2572 | struct drm_plane_state *old_plane_state, *new_plane_state; |
c2fcd274 DV |
2573 | int i; |
2574 | ||
415c3ac3 | 2575 | for_each_oldnew_plane_in_state(old_state, plane, old_plane_state, new_plane_state, i) { |
b5ceff20 | 2576 | const struct drm_plane_helper_funcs *funcs; |
415c3ac3 ML |
2577 | struct drm_plane_state *plane_state; |
2578 | ||
2579 | /* | |
2580 | * This might be called before swapping when commit is aborted, | |
2581 | * in which case we have to cleanup the new state. | |
2582 | */ | |
2583 | if (old_plane_state == plane->state) | |
2584 | plane_state = new_plane_state; | |
2585 | else | |
2586 | plane_state = old_plane_state; | |
c2fcd274 | 2587 | |
c2fcd274 DV |
2588 | funcs = plane->helper_private; |
2589 | ||
844f9111 ML |
2590 | if (funcs->cleanup_fb) |
2591 | funcs->cleanup_fb(plane, plane_state); | |
c2fcd274 DV |
2592 | } |
2593 | } | |
2594 | EXPORT_SYMBOL(drm_atomic_helper_cleanup_planes); | |
2595 | ||
2596 | /** | |
2597 | * drm_atomic_helper_swap_state - store atomic state into current sw state | |
c2fcd274 | 2598 | * @state: atomic state |
c066d231 | 2599 | * @stall: stall for preceeding commits |
c2fcd274 DV |
2600 | * |
2601 | * This function stores the atomic state into the current state pointers in all | |
2602 | * driver objects. It should be called after all failing steps have been done | |
2603 | * and succeeded, but before the actual hardware state is committed. | |
2604 | * | |
2605 | * For cleanup and error recovery the current state for all changed objects will | |
c066d231 | 2606 | * be swapped into @state. |
c2fcd274 DV |
2607 | * |
2608 | * With that sequence it fits perfectly into the plane prepare/cleanup sequence: | |
2609 | * | |
2610 | * 1. Call drm_atomic_helper_prepare_planes() with the staged atomic state. | |
2611 | * | |
2612 | * 2. Do any other steps that might fail. | |
2613 | * | |
2614 | * 3. Put the staged state into the current state pointers with this function. | |
2615 | * | |
2616 | * 4. Actually commit the hardware state. | |
2617 | * | |
26196f7e | 2618 | * 5. Call drm_atomic_helper_cleanup_planes() with @state, which since step 3 |
c2fcd274 | 2619 | * contains the old state. Also do any other cleanup required with that state. |
a095caa7 DV |
2620 | * |
2621 | * @stall must be set when nonblocking commits for this driver directly access | |
6806cdf9 DV |
2622 | * the &drm_plane.state, &drm_crtc.state or &drm_connector.state pointer. With |
2623 | * the current atomic helpers this is almost always the case, since the helpers | |
a095caa7 | 2624 | * don't pass the right state structures to the callbacks. |
c066d231 ML |
2625 | * |
2626 | * Returns: | |
2627 | * | |
c4bbb735 ML |
2628 | * Returns 0 on success. Can return -ERESTARTSYS when @stall is true and the |
2629 | * waiting for the previous commits has been interrupted. | |
c2fcd274 | 2630 | */ |
c066d231 | 2631 | int drm_atomic_helper_swap_state(struct drm_atomic_state *state, |
5e84c269 | 2632 | bool stall) |
c2fcd274 | 2633 | { |
c4bbb735 | 2634 | int i, ret; |
be9174a4 | 2635 | struct drm_connector *connector; |
415c3ac3 | 2636 | struct drm_connector_state *old_conn_state, *new_conn_state; |
be9174a4 | 2637 | struct drm_crtc *crtc; |
415c3ac3 | 2638 | struct drm_crtc_state *old_crtc_state, *new_crtc_state; |
be9174a4 | 2639 | struct drm_plane *plane; |
415c3ac3 | 2640 | struct drm_plane_state *old_plane_state, *new_plane_state; |
a095caa7 | 2641 | struct drm_crtc_commit *commit; |
a4370c77 VS |
2642 | struct drm_private_obj *obj; |
2643 | struct drm_private_state *old_obj_state, *new_obj_state; | |
a095caa7 DV |
2644 | |
2645 | if (stall) { | |
21a01abb ML |
2646 | /* |
2647 | * We have to stall for hw_done here before | |
2648 | * drm_atomic_helper_wait_for_dependencies() because flip | |
2649 | * depth > 1 is not yet supported by all drivers. As long as | |
2650 | * obj->state is directly dereferenced anywhere in the drivers | |
2651 | * atomic_commit_tail function, then it's unsafe to swap state | |
2652 | * before drm_atomic_helper_commit_hw_done() is called. | |
2653 | */ | |
2654 | ||
163bcc2c ML |
2655 | for_each_old_crtc_in_state(state, crtc, old_crtc_state, i) { |
2656 | commit = old_crtc_state->commit; | |
a095caa7 DV |
2657 | |
2658 | if (!commit) | |
2659 | continue; | |
2660 | ||
c4bbb735 | 2661 | ret = wait_for_completion_interruptible(&commit->hw_done); |
c4bbb735 ML |
2662 | if (ret) |
2663 | return ret; | |
a095caa7 | 2664 | } |
21a01abb ML |
2665 | |
2666 | for_each_old_connector_in_state(state, connector, old_conn_state, i) { | |
2667 | commit = old_conn_state->commit; | |
a095caa7 DV |
2668 | |
2669 | if (!commit) | |
2670 | continue; | |
2671 | ||
c4bbb735 | 2672 | ret = wait_for_completion_interruptible(&commit->hw_done); |
21a01abb ML |
2673 | if (ret) |
2674 | return ret; | |
2675 | } | |
c4bbb735 | 2676 | |
21a01abb ML |
2677 | for_each_old_plane_in_state(state, plane, old_plane_state, i) { |
2678 | commit = old_plane_state->commit; | |
2679 | ||
2680 | if (!commit) | |
2681 | continue; | |
2682 | ||
2683 | ret = wait_for_completion_interruptible(&commit->hw_done); | |
c4bbb735 ML |
2684 | if (ret) |
2685 | return ret; | |
a095caa7 DV |
2686 | } |
2687 | } | |
c2fcd274 | 2688 | |
415c3ac3 | 2689 | for_each_oldnew_connector_in_state(state, connector, old_conn_state, new_conn_state, i) { |
581e49fe ML |
2690 | WARN_ON(connector->state != old_conn_state); |
2691 | ||
415c3ac3 ML |
2692 | old_conn_state->state = state; |
2693 | new_conn_state->state = NULL; | |
2694 | ||
2695 | state->connectors[i].state = old_conn_state; | |
2696 | connector->state = new_conn_state; | |
c2fcd274 DV |
2697 | } |
2698 | ||
415c3ac3 | 2699 | for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) { |
581e49fe ML |
2700 | WARN_ON(crtc->state != old_crtc_state); |
2701 | ||
415c3ac3 ML |
2702 | old_crtc_state->state = state; |
2703 | new_crtc_state->state = NULL; | |
2704 | ||
2705 | state->crtcs[i].state = old_crtc_state; | |
2706 | crtc->state = new_crtc_state; | |
a095caa7 | 2707 | |
163bcc2c | 2708 | if (new_crtc_state->commit) { |
a095caa7 | 2709 | spin_lock(&crtc->commit_lock); |
163bcc2c | 2710 | list_add(&new_crtc_state->commit->commit_entry, |
a095caa7 DV |
2711 | &crtc->commit_list); |
2712 | spin_unlock(&crtc->commit_lock); | |
2713 | ||
163bcc2c | 2714 | new_crtc_state->commit->event = NULL; |
a095caa7 | 2715 | } |
c2fcd274 DV |
2716 | } |
2717 | ||
415c3ac3 | 2718 | for_each_oldnew_plane_in_state(state, plane, old_plane_state, new_plane_state, i) { |
581e49fe ML |
2719 | WARN_ON(plane->state != old_plane_state); |
2720 | ||
415c3ac3 ML |
2721 | old_plane_state->state = state; |
2722 | new_plane_state->state = NULL; | |
2723 | ||
2724 | state->planes[i].state = old_plane_state; | |
2725 | plane->state = new_plane_state; | |
c2fcd274 | 2726 | } |
b430c27a | 2727 | |
a4370c77 VS |
2728 | for_each_oldnew_private_obj_in_state(state, obj, old_obj_state, new_obj_state, i) { |
2729 | WARN_ON(obj->state != old_obj_state); | |
2730 | ||
2731 | old_obj_state->state = state; | |
2732 | new_obj_state->state = NULL; | |
2733 | ||
2734 | state->private_objs[i].state = old_obj_state; | |
2735 | obj->state = new_obj_state; | |
2736 | } | |
c066d231 ML |
2737 | |
2738 | return 0; | |
c2fcd274 DV |
2739 | } |
2740 | EXPORT_SYMBOL(drm_atomic_helper_swap_state); | |
042652ed DV |
2741 | |
2742 | /** | |
2743 | * drm_atomic_helper_update_plane - Helper for primary plane update using atomic | |
2744 | * @plane: plane object to update | |
2745 | * @crtc: owning CRTC of owning plane | |
2746 | * @fb: framebuffer to flip onto plane | |
2747 | * @crtc_x: x offset of primary plane on crtc | |
2748 | * @crtc_y: y offset of primary plane on crtc | |
2749 | * @crtc_w: width of primary plane rectangle on crtc | |
2750 | * @crtc_h: height of primary plane rectangle on crtc | |
2751 | * @src_x: x offset of @fb for panning | |
2752 | * @src_y: y offset of @fb for panning | |
2753 | * @src_w: width of source rectangle in @fb | |
2754 | * @src_h: height of source rectangle in @fb | |
34a2ab5e | 2755 | * @ctx: lock acquire context |
042652ed DV |
2756 | * |
2757 | * Provides a default plane update handler using the atomic driver interface. | |
2758 | * | |
2759 | * RETURNS: | |
2760 | * Zero on success, error code on failure | |
2761 | */ | |
2762 | int drm_atomic_helper_update_plane(struct drm_plane *plane, | |
2763 | struct drm_crtc *crtc, | |
2764 | struct drm_framebuffer *fb, | |
2765 | int crtc_x, int crtc_y, | |
2766 | unsigned int crtc_w, unsigned int crtc_h, | |
2767 | uint32_t src_x, uint32_t src_y, | |
34a2ab5e DV |
2768 | uint32_t src_w, uint32_t src_h, |
2769 | struct drm_modeset_acquire_ctx *ctx) | |
042652ed DV |
2770 | { |
2771 | struct drm_atomic_state *state; | |
2772 | struct drm_plane_state *plane_state; | |
2773 | int ret = 0; | |
2774 | ||
2775 | state = drm_atomic_state_alloc(plane->dev); | |
2776 | if (!state) | |
2777 | return -ENOMEM; | |
2778 | ||
d26f96c7 | 2779 | state->acquire_ctx = ctx; |
042652ed DV |
2780 | plane_state = drm_atomic_get_plane_state(state, plane); |
2781 | if (IS_ERR(plane_state)) { | |
2782 | ret = PTR_ERR(plane_state); | |
2783 | goto fail; | |
2784 | } | |
2785 | ||
07cc0ef6 | 2786 | ret = drm_atomic_set_crtc_for_plane(plane_state, crtc); |
042652ed DV |
2787 | if (ret != 0) |
2788 | goto fail; | |
321ebf04 | 2789 | drm_atomic_set_fb_for_plane(plane_state, fb); |
042652ed DV |
2790 | plane_state->crtc_x = crtc_x; |
2791 | plane_state->crtc_y = crtc_y; | |
042652ed | 2792 | plane_state->crtc_w = crtc_w; |
02e6f379 | 2793 | plane_state->crtc_h = crtc_h; |
042652ed DV |
2794 | plane_state->src_x = src_x; |
2795 | plane_state->src_y = src_y; | |
042652ed | 2796 | plane_state->src_w = src_w; |
02e6f379 | 2797 | plane_state->src_h = src_h; |
042652ed | 2798 | |
3671c580 DV |
2799 | if (plane == crtc->cursor) |
2800 | state->legacy_cursor_update = true; | |
2801 | ||
042652ed | 2802 | ret = drm_atomic_commit(state); |
042652ed | 2803 | fail: |
0853695c | 2804 | drm_atomic_state_put(state); |
042652ed | 2805 | return ret; |
042652ed DV |
2806 | } |
2807 | EXPORT_SYMBOL(drm_atomic_helper_update_plane); | |
2808 | ||
2809 | /** | |
2810 | * drm_atomic_helper_disable_plane - Helper for primary plane disable using * atomic | |
2811 | * @plane: plane to disable | |
19315294 | 2812 | * @ctx: lock acquire context |
042652ed DV |
2813 | * |
2814 | * Provides a default plane disable handler using the atomic driver interface. | |
2815 | * | |
2816 | * RETURNS: | |
2817 | * Zero on success, error code on failure | |
2818 | */ | |
19315294 DV |
2819 | int drm_atomic_helper_disable_plane(struct drm_plane *plane, |
2820 | struct drm_modeset_acquire_ctx *ctx) | |
042652ed DV |
2821 | { |
2822 | struct drm_atomic_state *state; | |
2823 | struct drm_plane_state *plane_state; | |
2824 | int ret = 0; | |
2825 | ||
2826 | state = drm_atomic_state_alloc(plane->dev); | |
2827 | if (!state) | |
2828 | return -ENOMEM; | |
2829 | ||
d26f96c7 | 2830 | state->acquire_ctx = ctx; |
042652ed DV |
2831 | plane_state = drm_atomic_get_plane_state(state, plane); |
2832 | if (IS_ERR(plane_state)) { | |
2833 | ret = PTR_ERR(plane_state); | |
2834 | goto fail; | |
2835 | } | |
2836 | ||
a36c027d | 2837 | if (plane_state->crtc && plane_state->crtc->cursor == plane) |
24e79d0d ML |
2838 | plane_state->state->legacy_cursor_update = true; |
2839 | ||
bbb1e524 | 2840 | ret = __drm_atomic_helper_disable_plane(plane, plane_state); |
042652ed DV |
2841 | if (ret != 0) |
2842 | goto fail; | |
f02ad907 | 2843 | |
042652ed | 2844 | ret = drm_atomic_commit(state); |
042652ed | 2845 | fail: |
0853695c | 2846 | drm_atomic_state_put(state); |
042652ed | 2847 | return ret; |
042652ed DV |
2848 | } |
2849 | EXPORT_SYMBOL(drm_atomic_helper_disable_plane); | |
2850 | ||
042652ed DV |
2851 | /** |
2852 | * drm_atomic_helper_set_config - set a new config from userspace | |
2853 | * @set: mode set configuration | |
a4eff9aa | 2854 | * @ctx: lock acquisition context |
042652ed DV |
2855 | * |
2856 | * Provides a default crtc set_config handler using the atomic driver interface. | |
2857 | * | |
40ee6fbe MN |
2858 | * NOTE: For backwards compatibility with old userspace this automatically |
2859 | * resets the "link-status" property to GOOD, to force any link | |
2860 | * re-training. The SETCRTC ioctl does not define whether an update does | |
2861 | * need a full modeset or just a plane update, hence we're allowed to do | |
97e14fbe | 2862 | * that. See also drm_connector_set_link_status_property(). |
40ee6fbe | 2863 | * |
042652ed DV |
2864 | * Returns: |
2865 | * Returns 0 on success, negative errno numbers on failure. | |
2866 | */ | |
a4eff9aa DV |
2867 | int drm_atomic_helper_set_config(struct drm_mode_set *set, |
2868 | struct drm_modeset_acquire_ctx *ctx) | |
042652ed DV |
2869 | { |
2870 | struct drm_atomic_state *state; | |
2871 | struct drm_crtc *crtc = set->crtc; | |
042652ed DV |
2872 | int ret = 0; |
2873 | ||
2874 | state = drm_atomic_state_alloc(crtc->dev); | |
2875 | if (!state) | |
2876 | return -ENOMEM; | |
2877 | ||
38b6441e | 2878 | state->acquire_ctx = ctx; |
bbb1e524 RC |
2879 | ret = __drm_atomic_helper_set_config(set, state); |
2880 | if (ret != 0) | |
1fa4da04 | 2881 | goto fail; |
042652ed | 2882 | |
44596b8c ML |
2883 | ret = handle_conflicting_encoders(state, true); |
2884 | if (ret) | |
2885 | return ret; | |
2886 | ||
bbb1e524 | 2887 | ret = drm_atomic_commit(state); |
bbb1e524 | 2888 | |
1fa4da04 | 2889 | fail: |
0853695c | 2890 | drm_atomic_state_put(state); |
bbb1e524 | 2891 | return ret; |
bbb1e524 RC |
2892 | } |
2893 | EXPORT_SYMBOL(drm_atomic_helper_set_config); | |
2894 | ||
37406a60 SP |
2895 | /** |
2896 | * drm_atomic_helper_disable_all - disable all currently active outputs | |
2897 | * @dev: DRM device | |
2898 | * @ctx: lock acquisition context | |
2899 | * | |
2900 | * Loops through all connectors, finding those that aren't turned off and then | |
2901 | * turns them off by setting their DPMS mode to OFF and deactivating the CRTC | |
2902 | * that they are connected to. | |
2903 | * | |
2904 | * This is used for example in suspend/resume to disable all currently active | |
2905 | * functions when suspending. If you just want to shut down everything at e.g. | |
2906 | * driver unload, look at drm_atomic_helper_shutdown(). | |
2907 | * | |
2908 | * Note that if callers haven't already acquired all modeset locks this might | |
2909 | * return -EDEADLK, which must be handled by calling drm_modeset_backoff(). | |
2910 | * | |
2911 | * Returns: | |
2912 | * 0 on success or a negative error code on failure. | |
2913 | * | |
2914 | * See also: | |
2915 | * drm_atomic_helper_suspend(), drm_atomic_helper_resume() and | |
2916 | * drm_atomic_helper_shutdown(). | |
2917 | */ | |
2918 | int drm_atomic_helper_disable_all(struct drm_device *dev, | |
2919 | struct drm_modeset_acquire_ctx *ctx) | |
14942760 TR |
2920 | { |
2921 | struct drm_atomic_state *state; | |
9b2104f4 | 2922 | struct drm_connector_state *conn_state; |
14942760 | 2923 | struct drm_connector *conn; |
9b2104f4 ML |
2924 | struct drm_plane_state *plane_state; |
2925 | struct drm_plane *plane; | |
2926 | struct drm_crtc_state *crtc_state; | |
2927 | struct drm_crtc *crtc; | |
2928 | int ret, i; | |
14942760 TR |
2929 | |
2930 | state = drm_atomic_state_alloc(dev); | |
2931 | if (!state) | |
2932 | return -ENOMEM; | |
2933 | ||
2934 | state->acquire_ctx = ctx; | |
2935 | ||
9b2104f4 | 2936 | drm_for_each_crtc(crtc, dev) { |
14942760 TR |
2937 | crtc_state = drm_atomic_get_crtc_state(state, crtc); |
2938 | if (IS_ERR(crtc_state)) { | |
9b2104f4 | 2939 | ret = PTR_ERR(crtc_state); |
14942760 TR |
2940 | goto free; |
2941 | } | |
2942 | ||
2943 | crtc_state->active = false; | |
9b2104f4 ML |
2944 | |
2945 | ret = drm_atomic_set_mode_prop_for_crtc(crtc_state, NULL); | |
2946 | if (ret < 0) | |
2947 | goto free; | |
2948 | ||
2949 | ret = drm_atomic_add_affected_planes(state, crtc); | |
2950 | if (ret < 0) | |
2951 | goto free; | |
2952 | ||
2953 | ret = drm_atomic_add_affected_connectors(state, crtc); | |
2954 | if (ret < 0) | |
2955 | goto free; | |
2956 | } | |
2957 | ||
dfb8bb3b | 2958 | for_each_new_connector_in_state(state, conn, conn_state, i) { |
9b2104f4 ML |
2959 | ret = drm_atomic_set_crtc_for_connector(conn_state, NULL); |
2960 | if (ret < 0) | |
2961 | goto free; | |
2962 | } | |
2963 | ||
dfb8bb3b | 2964 | for_each_new_plane_in_state(state, plane, plane_state, i) { |
9b2104f4 ML |
2965 | ret = drm_atomic_set_crtc_for_plane(plane_state, NULL); |
2966 | if (ret < 0) | |
2967 | goto free; | |
2968 | ||
2969 | drm_atomic_set_fb_for_plane(plane_state, NULL); | |
14942760 TR |
2970 | } |
2971 | ||
9b2104f4 | 2972 | ret = drm_atomic_commit(state); |
14942760 | 2973 | free: |
0853695c | 2974 | drm_atomic_state_put(state); |
9b2104f4 | 2975 | return ret; |
14942760 TR |
2976 | } |
2977 | EXPORT_SYMBOL(drm_atomic_helper_disable_all); | |
2978 | ||
18dddadc DV |
2979 | /** |
2980 | * drm_atomic_helper_shutdown - shutdown all CRTC | |
2981 | * @dev: DRM device | |
2982 | * | |
2983 | * This shuts down all CRTC, which is useful for driver unloading. Shutdown on | |
2984 | * suspend should instead be handled with drm_atomic_helper_suspend(), since | |
2985 | * that also takes a snapshot of the modeset state to be restored on resume. | |
2986 | * | |
2987 | * This is just a convenience wrapper around drm_atomic_helper_disable_all(), | |
2988 | * and it is the atomic version of drm_crtc_force_disable_all(). | |
2989 | */ | |
2990 | void drm_atomic_helper_shutdown(struct drm_device *dev) | |
2991 | { | |
2992 | struct drm_modeset_acquire_ctx ctx; | |
2993 | int ret; | |
2994 | ||
b7ea04d2 | 2995 | DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, 0, ret); |
18dddadc | 2996 | |
37406a60 | 2997 | ret = drm_atomic_helper_disable_all(dev, &ctx); |
18dddadc DV |
2998 | if (ret) |
2999 | DRM_ERROR("Disabling all crtc's during unload failed with %i\n", ret); | |
3000 | ||
b7ea04d2 | 3001 | DRM_MODESET_LOCK_ALL_END(ctx, ret); |
18dddadc DV |
3002 | } |
3003 | EXPORT_SYMBOL(drm_atomic_helper_shutdown); | |
3004 | ||
1d8224e7 DV |
3005 | /** |
3006 | * drm_atomic_helper_duplicate_state - duplicate an atomic state object | |
3007 | * @dev: DRM device | |
3008 | * @ctx: lock acquisition context | |
3009 | * | |
3010 | * Makes a copy of the current atomic state by looping over all objects and | |
3011 | * duplicating their respective states. This is used for example by suspend/ | |
3012 | * resume support code to save the state prior to suspend such that it can | |
3013 | * be restored upon resume. | |
3014 | * | |
3015 | * Note that this treats atomic state as persistent between save and restore. | |
3016 | * Drivers must make sure that this is possible and won't result in confusion | |
3017 | * or erroneous behaviour. | |
3018 | * | |
3019 | * Note that if callers haven't already acquired all modeset locks this might | |
3020 | * return -EDEADLK, which must be handled by calling drm_modeset_backoff(). | |
3021 | * | |
3022 | * Returns: | |
3023 | * A pointer to the copy of the atomic state object on success or an | |
3024 | * ERR_PTR()-encoded error code on failure. | |
3025 | * | |
3026 | * See also: | |
3027 | * drm_atomic_helper_suspend(), drm_atomic_helper_resume() | |
3028 | */ | |
3029 | struct drm_atomic_state * | |
3030 | drm_atomic_helper_duplicate_state(struct drm_device *dev, | |
3031 | struct drm_modeset_acquire_ctx *ctx) | |
3032 | { | |
3033 | struct drm_atomic_state *state; | |
3034 | struct drm_connector *conn; | |
3035 | struct drm_connector_list_iter conn_iter; | |
3036 | struct drm_plane *plane; | |
3037 | struct drm_crtc *crtc; | |
3038 | int err = 0; | |
3039 | ||
3040 | state = drm_atomic_state_alloc(dev); | |
3041 | if (!state) | |
3042 | return ERR_PTR(-ENOMEM); | |
3043 | ||
3044 | state->acquire_ctx = ctx; | |
022debad | 3045 | state->duplicated = true; |
1d8224e7 DV |
3046 | |
3047 | drm_for_each_crtc(crtc, dev) { | |
3048 | struct drm_crtc_state *crtc_state; | |
3049 | ||
3050 | crtc_state = drm_atomic_get_crtc_state(state, crtc); | |
3051 | if (IS_ERR(crtc_state)) { | |
3052 | err = PTR_ERR(crtc_state); | |
3053 | goto free; | |
3054 | } | |
3055 | } | |
3056 | ||
3057 | drm_for_each_plane(plane, dev) { | |
3058 | struct drm_plane_state *plane_state; | |
3059 | ||
3060 | plane_state = drm_atomic_get_plane_state(state, plane); | |
3061 | if (IS_ERR(plane_state)) { | |
3062 | err = PTR_ERR(plane_state); | |
3063 | goto free; | |
3064 | } | |
3065 | } | |
3066 | ||
3067 | drm_connector_list_iter_begin(dev, &conn_iter); | |
3068 | drm_for_each_connector_iter(conn, &conn_iter) { | |
3069 | struct drm_connector_state *conn_state; | |
3070 | ||
3071 | conn_state = drm_atomic_get_connector_state(state, conn); | |
3072 | if (IS_ERR(conn_state)) { | |
3073 | err = PTR_ERR(conn_state); | |
3074 | drm_connector_list_iter_end(&conn_iter); | |
3075 | goto free; | |
3076 | } | |
3077 | } | |
3078 | drm_connector_list_iter_end(&conn_iter); | |
3079 | ||
3080 | /* clear the acquire context so that it isn't accidentally reused */ | |
3081 | state->acquire_ctx = NULL; | |
3082 | ||
3083 | free: | |
3084 | if (err < 0) { | |
3085 | drm_atomic_state_put(state); | |
3086 | state = ERR_PTR(err); | |
3087 | } | |
3088 | ||
3089 | return state; | |
3090 | } | |
3091 | EXPORT_SYMBOL(drm_atomic_helper_duplicate_state); | |
3092 | ||
14942760 TR |
3093 | /** |
3094 | * drm_atomic_helper_suspend - subsystem-level suspend helper | |
3095 | * @dev: DRM device | |
3096 | * | |
3097 | * Duplicates the current atomic state, disables all active outputs and then | |
3098 | * returns a pointer to the original atomic state to the caller. Drivers can | |
3099 | * pass this pointer to the drm_atomic_helper_resume() helper upon resume to | |
3100 | * restore the output configuration that was active at the time the system | |
3101 | * entered suspend. | |
3102 | * | |
3103 | * Note that it is potentially unsafe to use this. The atomic state object | |
3104 | * returned by this function is assumed to be persistent. Drivers must ensure | |
3105 | * that this holds true. Before calling this function, drivers must make sure | |
3106 | * to suspend fbdev emulation so that nothing can be using the device. | |
3107 | * | |
3108 | * Returns: | |
3109 | * A pointer to a copy of the state before suspend on success or an ERR_PTR()- | |
3110 | * encoded error code on failure. Drivers should store the returned atomic | |
3111 | * state object and pass it to the drm_atomic_helper_resume() helper upon | |
3112 | * resume. | |
3113 | * | |
3114 | * See also: | |
3115 | * drm_atomic_helper_duplicate_state(), drm_atomic_helper_disable_all(), | |
581e49fe | 3116 | * drm_atomic_helper_resume(), drm_atomic_helper_commit_duplicated_state() |
14942760 TR |
3117 | */ |
3118 | struct drm_atomic_state *drm_atomic_helper_suspend(struct drm_device *dev) | |
3119 | { | |
3120 | struct drm_modeset_acquire_ctx ctx; | |
3121 | struct drm_atomic_state *state; | |
3122 | int err; | |
3123 | ||
615aa3d9 SP |
3124 | /* This can never be returned, but it makes the compiler happy */ |
3125 | state = ERR_PTR(-EINVAL); | |
14942760 | 3126 | |
b7ea04d2 | 3127 | DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, 0, err); |
14942760 TR |
3128 | |
3129 | state = drm_atomic_helper_duplicate_state(dev, &ctx); | |
3130 | if (IS_ERR(state)) | |
3131 | goto unlock; | |
3132 | ||
3133 | err = drm_atomic_helper_disable_all(dev, &ctx); | |
3134 | if (err < 0) { | |
0853695c | 3135 | drm_atomic_state_put(state); |
14942760 TR |
3136 | state = ERR_PTR(err); |
3137 | goto unlock; | |
3138 | } | |
3139 | ||
3140 | unlock: | |
b7ea04d2 SP |
3141 | DRM_MODESET_LOCK_ALL_END(ctx, err); |
3142 | if (err) | |
3143 | return ERR_PTR(err); | |
14942760 | 3144 | |
14942760 TR |
3145 | return state; |
3146 | } | |
3147 | EXPORT_SYMBOL(drm_atomic_helper_suspend); | |
3148 | ||
581e49fe ML |
3149 | /** |
3150 | * drm_atomic_helper_commit_duplicated_state - commit duplicated state | |
3151 | * @state: duplicated atomic state to commit | |
3152 | * @ctx: pointer to acquire_ctx to use for commit. | |
3153 | * | |
3154 | * The state returned by drm_atomic_helper_duplicate_state() and | |
3155 | * drm_atomic_helper_suspend() is partially invalid, and needs to | |
3156 | * be fixed up before commit. | |
3157 | * | |
3158 | * Returns: | |
3159 | * 0 on success or a negative error code on failure. | |
3160 | * | |
3161 | * See also: | |
3162 | * drm_atomic_helper_suspend() | |
3163 | */ | |
3164 | int drm_atomic_helper_commit_duplicated_state(struct drm_atomic_state *state, | |
3165 | struct drm_modeset_acquire_ctx *ctx) | |
3166 | { | |
aa394b0d | 3167 | int i, ret; |
581e49fe | 3168 | struct drm_plane *plane; |
415c3ac3 | 3169 | struct drm_plane_state *new_plane_state; |
581e49fe | 3170 | struct drm_connector *connector; |
415c3ac3 | 3171 | struct drm_connector_state *new_conn_state; |
581e49fe | 3172 | struct drm_crtc *crtc; |
415c3ac3 | 3173 | struct drm_crtc_state *new_crtc_state; |
581e49fe ML |
3174 | |
3175 | state->acquire_ctx = ctx; | |
3176 | ||
e00fb856 | 3177 | for_each_new_plane_in_state(state, plane, new_plane_state, i) |
581e49fe ML |
3178 | state->planes[i].old_state = plane->state; |
3179 | ||
415c3ac3 | 3180 | for_each_new_crtc_in_state(state, crtc, new_crtc_state, i) |
581e49fe ML |
3181 | state->crtcs[i].old_state = crtc->state; |
3182 | ||
415c3ac3 | 3183 | for_each_new_connector_in_state(state, connector, new_conn_state, i) |
581e49fe ML |
3184 | state->connectors[i].old_state = connector->state; |
3185 | ||
aa394b0d SP |
3186 | ret = drm_atomic_commit(state); |
3187 | ||
3188 | state->acquire_ctx = NULL; | |
3189 | ||
3190 | return ret; | |
581e49fe ML |
3191 | } |
3192 | EXPORT_SYMBOL(drm_atomic_helper_commit_duplicated_state); | |
3193 | ||
14942760 TR |
3194 | /** |
3195 | * drm_atomic_helper_resume - subsystem-level resume helper | |
3196 | * @dev: DRM device | |
3197 | * @state: atomic state to resume to | |
3198 | * | |
3199 | * Calls drm_mode_config_reset() to synchronize hardware and software states, | |
3200 | * grabs all modeset locks and commits the atomic state object. This can be | |
3201 | * used in conjunction with the drm_atomic_helper_suspend() helper to | |
3202 | * implement suspend/resume for drivers that support atomic mode-setting. | |
3203 | * | |
3204 | * Returns: | |
3205 | * 0 on success or a negative error code on failure. | |
3206 | * | |
3207 | * See also: | |
3208 | * drm_atomic_helper_suspend() | |
3209 | */ | |
3210 | int drm_atomic_helper_resume(struct drm_device *dev, | |
3211 | struct drm_atomic_state *state) | |
3212 | { | |
a5b8444e | 3213 | struct drm_modeset_acquire_ctx ctx; |
14942760 TR |
3214 | int err; |
3215 | ||
3216 | drm_mode_config_reset(dev); | |
581e49fe | 3217 | |
b7ea04d2 | 3218 | DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, 0, err); |
869e188a | 3219 | |
b7ea04d2 | 3220 | err = drm_atomic_helper_commit_duplicated_state(state, &ctx); |
a5b8444e | 3221 | |
b7ea04d2 | 3222 | DRM_MODESET_LOCK_ALL_END(ctx, err); |
6d281b1f | 3223 | drm_atomic_state_put(state); |
14942760 TR |
3224 | |
3225 | return err; | |
3226 | } | |
3227 | EXPORT_SYMBOL(drm_atomic_helper_resume); | |
3228 | ||
8c3a8181 DV |
3229 | static int page_flip_common(struct drm_atomic_state *state, |
3230 | struct drm_crtc *crtc, | |
3231 | struct drm_framebuffer *fb, | |
3232 | struct drm_pending_vblank_event *event, | |
3233 | uint32_t flags) | |
f869a6ec AG |
3234 | { |
3235 | struct drm_plane *plane = crtc->primary; | |
3236 | struct drm_plane_state *plane_state; | |
3237 | struct drm_crtc_state *crtc_state; | |
3238 | int ret = 0; | |
3239 | ||
3240 | crtc_state = drm_atomic_get_crtc_state(state, crtc); | |
3241 | if (IS_ERR(crtc_state)) | |
3242 | return PTR_ERR(crtc_state); | |
3243 | ||
3244 | crtc_state->event = event; | |
6cbe5c46 | 3245 | crtc_state->pageflip_flags = flags; |
f869a6ec AG |
3246 | |
3247 | plane_state = drm_atomic_get_plane_state(state, plane); | |
3248 | if (IS_ERR(plane_state)) | |
3249 | return PTR_ERR(plane_state); | |
3250 | ||
f869a6ec AG |
3251 | ret = drm_atomic_set_crtc_for_plane(plane_state, crtc); |
3252 | if (ret != 0) | |
3253 | return ret; | |
3254 | drm_atomic_set_fb_for_plane(plane_state, fb); | |
3255 | ||
3256 | /* Make sure we don't accidentally do a full modeset. */ | |
3257 | state->allow_modeset = false; | |
3258 | if (!crtc_state->active) { | |
6ac7c548 RK |
3259 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] disabled, rejecting legacy flip\n", |
3260 | crtc->base.id, crtc->name); | |
f869a6ec AG |
3261 | return -EINVAL; |
3262 | } | |
3263 | ||
3264 | return ret; | |
3265 | } | |
3266 | ||
8bc0f312 DV |
3267 | /** |
3268 | * drm_atomic_helper_page_flip - execute a legacy page flip | |
3269 | * @crtc: DRM crtc | |
3270 | * @fb: DRM framebuffer | |
3271 | * @event: optional DRM event to signal upon completion | |
3272 | * @flags: flip flags for non-vblank sync'ed updates | |
41292b1f | 3273 | * @ctx: lock acquisition context |
8bc0f312 | 3274 | * |
f869a6ec AG |
3275 | * Provides a default &drm_crtc_funcs.page_flip implementation |
3276 | * using the atomic driver interface. | |
8bc0f312 | 3277 | * |
8bc0f312 DV |
3278 | * Returns: |
3279 | * Returns 0 on success, negative errno numbers on failure. | |
f869a6ec AG |
3280 | * |
3281 | * See also: | |
3282 | * drm_atomic_helper_page_flip_target() | |
8bc0f312 DV |
3283 | */ |
3284 | int drm_atomic_helper_page_flip(struct drm_crtc *crtc, | |
3285 | struct drm_framebuffer *fb, | |
3286 | struct drm_pending_vblank_event *event, | |
41292b1f DV |
3287 | uint32_t flags, |
3288 | struct drm_modeset_acquire_ctx *ctx) | |
8bc0f312 DV |
3289 | { |
3290 | struct drm_plane *plane = crtc->primary; | |
3291 | struct drm_atomic_state *state; | |
8bc0f312 DV |
3292 | int ret = 0; |
3293 | ||
8bc0f312 DV |
3294 | state = drm_atomic_state_alloc(plane->dev); |
3295 | if (!state) | |
3296 | return -ENOMEM; | |
3297 | ||
043e7fb6 | 3298 | state->acquire_ctx = ctx; |
f869a6ec | 3299 | |
6cbe5c46 | 3300 | ret = page_flip_common(state, crtc, fb, event, flags); |
f869a6ec | 3301 | if (ret != 0) |
8bc0f312 | 3302 | goto fail; |
8bc0f312 | 3303 | |
f869a6ec | 3304 | ret = drm_atomic_nonblocking_commit(state); |
f869a6ec | 3305 | fail: |
f869a6ec AG |
3306 | drm_atomic_state_put(state); |
3307 | return ret; | |
f869a6ec AG |
3308 | } |
3309 | EXPORT_SYMBOL(drm_atomic_helper_page_flip); | |
3310 | ||
3311 | /** | |
3312 | * drm_atomic_helper_page_flip_target - do page flip on target vblank period. | |
3313 | * @crtc: DRM crtc | |
3314 | * @fb: DRM framebuffer | |
3315 | * @event: optional DRM event to signal upon completion | |
3316 | * @flags: flip flags for non-vblank sync'ed updates | |
3317 | * @target: specifying the target vblank period when the flip to take effect | |
41292b1f | 3318 | * @ctx: lock acquisition context |
f869a6ec AG |
3319 | * |
3320 | * Provides a default &drm_crtc_funcs.page_flip_target implementation. | |
3321 | * Similar to drm_atomic_helper_page_flip() with extra parameter to specify | |
3322 | * target vblank period to flip. | |
3323 | * | |
3324 | * Returns: | |
3325 | * Returns 0 on success, negative errno numbers on failure. | |
3326 | */ | |
8c3a8181 DV |
3327 | int drm_atomic_helper_page_flip_target(struct drm_crtc *crtc, |
3328 | struct drm_framebuffer *fb, | |
3329 | struct drm_pending_vblank_event *event, | |
3330 | uint32_t flags, | |
3331 | uint32_t target, | |
3332 | struct drm_modeset_acquire_ctx *ctx) | |
f869a6ec AG |
3333 | { |
3334 | struct drm_plane *plane = crtc->primary; | |
3335 | struct drm_atomic_state *state; | |
3336 | struct drm_crtc_state *crtc_state; | |
3337 | int ret = 0; | |
3338 | ||
f869a6ec AG |
3339 | state = drm_atomic_state_alloc(plane->dev); |
3340 | if (!state) | |
3341 | return -ENOMEM; | |
3342 | ||
043e7fb6 | 3343 | state->acquire_ctx = ctx; |
f869a6ec | 3344 | |
6cbe5c46 | 3345 | ret = page_flip_common(state, crtc, fb, event, flags); |
8bc0f312 DV |
3346 | if (ret != 0) |
3347 | goto fail; | |
8bc0f312 | 3348 | |
b4d93679 | 3349 | crtc_state = drm_atomic_get_new_crtc_state(state, crtc); |
f869a6ec | 3350 | if (WARN_ON(!crtc_state)) { |
4cba6850 DV |
3351 | ret = -EINVAL; |
3352 | goto fail; | |
3353 | } | |
f869a6ec | 3354 | crtc_state->target_vblank = target; |
4cba6850 | 3355 | |
b837ba0a | 3356 | ret = drm_atomic_nonblocking_commit(state); |
8bc0f312 | 3357 | fail: |
0853695c | 3358 | drm_atomic_state_put(state); |
8bc0f312 | 3359 | return ret; |
8bc0f312 | 3360 | } |
f869a6ec | 3361 | EXPORT_SYMBOL(drm_atomic_helper_page_flip_target); |
1d8224e7 DV |
3362 | |
3363 | /** | |
3364 | * drm_atomic_helper_legacy_gamma_set - set the legacy gamma correction table | |
3365 | * @crtc: CRTC object | |
3366 | * @red: red correction table | |
3367 | * @green: green correction table | |
3368 | * @blue: green correction table | |
3369 | * @size: size of the tables | |
3370 | * @ctx: lock acquire context | |
3371 | * | |
3372 | * Implements support for legacy gamma correction table for drivers | |
3373 | * that support color management through the DEGAMMA_LUT/GAMMA_LUT | |
3374 | * properties. See drm_crtc_enable_color_mgmt() and the containing chapter for | |
3375 | * how the atomic color management and gamma tables work. | |
3376 | */ | |
3377 | int drm_atomic_helper_legacy_gamma_set(struct drm_crtc *crtc, | |
3378 | u16 *red, u16 *green, u16 *blue, | |
3379 | uint32_t size, | |
3380 | struct drm_modeset_acquire_ctx *ctx) | |
3381 | { | |
3382 | struct drm_device *dev = crtc->dev; | |
3383 | struct drm_atomic_state *state; | |
3384 | struct drm_crtc_state *crtc_state; | |
3385 | struct drm_property_blob *blob = NULL; | |
3386 | struct drm_color_lut *blob_data; | |
3387 | int i, ret = 0; | |
3388 | bool replaced; | |
3389 | ||
3390 | state = drm_atomic_state_alloc(crtc->dev); | |
3391 | if (!state) | |
3392 | return -ENOMEM; | |
3393 | ||
3394 | blob = drm_property_create_blob(dev, | |
3395 | sizeof(struct drm_color_lut) * size, | |
3396 | NULL); | |
3397 | if (IS_ERR(blob)) { | |
3398 | ret = PTR_ERR(blob); | |
3399 | blob = NULL; | |
3400 | goto fail; | |
3401 | } | |
3402 | ||
3403 | /* Prepare GAMMA_LUT with the legacy values. */ | |
3404 | blob_data = blob->data; | |
3405 | for (i = 0; i < size; i++) { | |
3406 | blob_data[i].red = red[i]; | |
3407 | blob_data[i].green = green[i]; | |
3408 | blob_data[i].blue = blue[i]; | |
3409 | } | |
3410 | ||
3411 | state->acquire_ctx = ctx; | |
3412 | crtc_state = drm_atomic_get_crtc_state(state, crtc); | |
3413 | if (IS_ERR(crtc_state)) { | |
3414 | ret = PTR_ERR(crtc_state); | |
3415 | goto fail; | |
3416 | } | |
3417 | ||
3418 | /* Reset DEGAMMA_LUT and CTM properties. */ | |
3419 | replaced = drm_property_replace_blob(&crtc_state->degamma_lut, NULL); | |
3420 | replaced |= drm_property_replace_blob(&crtc_state->ctm, NULL); | |
3421 | replaced |= drm_property_replace_blob(&crtc_state->gamma_lut, blob); | |
3422 | crtc_state->color_mgmt_changed |= replaced; | |
3423 | ||
3424 | ret = drm_atomic_commit(state); | |
3425 | ||
3426 | fail: | |
3427 | drm_atomic_state_put(state); | |
3428 | drm_property_blob_put(blob); | |
3429 | return ret; | |
3430 | } | |
3431 | EXPORT_SYMBOL(drm_atomic_helper_legacy_gamma_set); |