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1 | /* | |
2 | * Copyright (C) 2014 Red Hat | |
3 | * Copyright (C) 2014 Intel Corp. | |
4 | * | |
5 | * Permission is hereby granted, free of charge, to any person obtaining a | |
6 | * copy of this software and associated documentation files (the "Software"), | |
7 | * to deal in the Software without restriction, including without limitation | |
8 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
9 | * and/or sell copies of the Software, and to permit persons to whom the | |
10 | * Software is furnished to do so, subject to the following conditions: | |
11 | * | |
12 | * The above copyright notice and this permission notice shall be included in | |
13 | * all copies or substantial portions of the Software. | |
14 | * | |
15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
18 | * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR | |
19 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, | |
20 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR | |
21 | * OTHER DEALINGS IN THE SOFTWARE. | |
22 | * | |
23 | * Authors: | |
24 | * Rob Clark <robdclark@gmail.com> | |
25 | * Daniel Vetter <daniel.vetter@ffwll.ch> | |
26 | */ | |
27 | ||
28 | ||
29 | #include <drm/drmP.h> | |
30 | #include <drm/drm_atomic.h> | |
31 | #include <drm/drm_mode.h> | |
32 | #include <drm/drm_plane_helper.h> | |
33 | ||
34 | /** | |
35 | * drm_atomic_state_default_release - | |
36 | * release memory initialized by drm_atomic_state_init | |
37 | * @state: atomic state | |
38 | * | |
39 | * Free all the memory allocated by drm_atomic_state_init. | |
40 | * This is useful for drivers that subclass the atomic state. | |
41 | */ | |
42 | void drm_atomic_state_default_release(struct drm_atomic_state *state) | |
43 | { | |
44 | kfree(state->connectors); | |
45 | kfree(state->connector_states); | |
46 | kfree(state->crtcs); | |
47 | kfree(state->crtc_states); | |
48 | kfree(state->planes); | |
49 | kfree(state->plane_states); | |
50 | } | |
51 | EXPORT_SYMBOL(drm_atomic_state_default_release); | |
52 | ||
53 | /** | |
54 | * drm_atomic_state_init - init new atomic state | |
55 | * @dev: DRM device | |
56 | * @state: atomic state | |
57 | * | |
58 | * Default implementation for filling in a new atomic state. | |
59 | * This is useful for drivers that subclass the atomic state. | |
60 | */ | |
61 | int | |
62 | drm_atomic_state_init(struct drm_device *dev, struct drm_atomic_state *state) | |
63 | { | |
64 | /* TODO legacy paths should maybe do a better job about | |
65 | * setting this appropriately? | |
66 | */ | |
67 | state->allow_modeset = true; | |
68 | ||
69 | state->crtcs = kcalloc(dev->mode_config.num_crtc, | |
70 | sizeof(*state->crtcs), GFP_KERNEL); | |
71 | if (!state->crtcs) | |
72 | goto fail; | |
73 | state->crtc_states = kcalloc(dev->mode_config.num_crtc, | |
74 | sizeof(*state->crtc_states), GFP_KERNEL); | |
75 | if (!state->crtc_states) | |
76 | goto fail; | |
77 | state->planes = kcalloc(dev->mode_config.num_total_plane, | |
78 | sizeof(*state->planes), GFP_KERNEL); | |
79 | if (!state->planes) | |
80 | goto fail; | |
81 | state->plane_states = kcalloc(dev->mode_config.num_total_plane, | |
82 | sizeof(*state->plane_states), GFP_KERNEL); | |
83 | if (!state->plane_states) | |
84 | goto fail; | |
85 | ||
86 | state->dev = dev; | |
87 | ||
88 | DRM_DEBUG_ATOMIC("Allocated atomic state %p\n", state); | |
89 | ||
90 | return 0; | |
91 | fail: | |
92 | drm_atomic_state_default_release(state); | |
93 | return -ENOMEM; | |
94 | } | |
95 | EXPORT_SYMBOL(drm_atomic_state_init); | |
96 | ||
97 | /** | |
98 | * drm_atomic_state_alloc - allocate atomic state | |
99 | * @dev: DRM device | |
100 | * | |
101 | * This allocates an empty atomic state to track updates. | |
102 | */ | |
103 | struct drm_atomic_state * | |
104 | drm_atomic_state_alloc(struct drm_device *dev) | |
105 | { | |
106 | struct drm_mode_config *config = &dev->mode_config; | |
107 | struct drm_atomic_state *state; | |
108 | ||
109 | if (!config->funcs->atomic_state_alloc) { | |
110 | state = kzalloc(sizeof(*state), GFP_KERNEL); | |
111 | if (!state) | |
112 | return NULL; | |
113 | if (drm_atomic_state_init(dev, state) < 0) { | |
114 | kfree(state); | |
115 | return NULL; | |
116 | } | |
117 | return state; | |
118 | } | |
119 | ||
120 | return config->funcs->atomic_state_alloc(dev); | |
121 | } | |
122 | EXPORT_SYMBOL(drm_atomic_state_alloc); | |
123 | ||
124 | /** | |
125 | * drm_atomic_state_default_clear - clear base atomic state | |
126 | * @state: atomic state | |
127 | * | |
128 | * Default implementation for clearing atomic state. | |
129 | * This is useful for drivers that subclass the atomic state. | |
130 | */ | |
131 | void drm_atomic_state_default_clear(struct drm_atomic_state *state) | |
132 | { | |
133 | struct drm_device *dev = state->dev; | |
134 | struct drm_mode_config *config = &dev->mode_config; | |
135 | int i; | |
136 | ||
137 | DRM_DEBUG_ATOMIC("Clearing atomic state %p\n", state); | |
138 | ||
139 | for (i = 0; i < state->num_connector; i++) { | |
140 | struct drm_connector *connector = state->connectors[i]; | |
141 | ||
142 | if (!connector) | |
143 | continue; | |
144 | ||
145 | /* | |
146 | * FIXME: Async commits can race with connector unplugging and | |
147 | * there's currently nothing that prevents cleanup up state for | |
148 | * deleted connectors. As long as the callback doesn't look at | |
149 | * the connector we'll be fine though, so make sure that's the | |
150 | * case by setting all connector pointers to NULL. | |
151 | */ | |
152 | state->connector_states[i]->connector = NULL; | |
153 | connector->funcs->atomic_destroy_state(NULL, | |
154 | state->connector_states[i]); | |
155 | state->connectors[i] = NULL; | |
156 | state->connector_states[i] = NULL; | |
157 | } | |
158 | ||
159 | for (i = 0; i < config->num_crtc; i++) { | |
160 | struct drm_crtc *crtc = state->crtcs[i]; | |
161 | ||
162 | if (!crtc) | |
163 | continue; | |
164 | ||
165 | crtc->funcs->atomic_destroy_state(crtc, | |
166 | state->crtc_states[i]); | |
167 | state->crtcs[i] = NULL; | |
168 | state->crtc_states[i] = NULL; | |
169 | } | |
170 | ||
171 | for (i = 0; i < config->num_total_plane; i++) { | |
172 | struct drm_plane *plane = state->planes[i]; | |
173 | ||
174 | if (!plane) | |
175 | continue; | |
176 | ||
177 | plane->funcs->atomic_destroy_state(plane, | |
178 | state->plane_states[i]); | |
179 | state->planes[i] = NULL; | |
180 | state->plane_states[i] = NULL; | |
181 | } | |
182 | } | |
183 | EXPORT_SYMBOL(drm_atomic_state_default_clear); | |
184 | ||
185 | /** | |
186 | * drm_atomic_state_clear - clear state object | |
187 | * @state: atomic state | |
188 | * | |
189 | * When the w/w mutex algorithm detects a deadlock we need to back off and drop | |
190 | * all locks. So someone else could sneak in and change the current modeset | |
191 | * configuration. Which means that all the state assembled in @state is no | |
192 | * longer an atomic update to the current state, but to some arbitrary earlier | |
193 | * state. Which could break assumptions the driver's ->atomic_check likely | |
194 | * relies on. | |
195 | * | |
196 | * Hence we must clear all cached state and completely start over, using this | |
197 | * function. | |
198 | */ | |
199 | void drm_atomic_state_clear(struct drm_atomic_state *state) | |
200 | { | |
201 | struct drm_device *dev = state->dev; | |
202 | struct drm_mode_config *config = &dev->mode_config; | |
203 | ||
204 | if (config->funcs->atomic_state_clear) | |
205 | config->funcs->atomic_state_clear(state); | |
206 | else | |
207 | drm_atomic_state_default_clear(state); | |
208 | } | |
209 | EXPORT_SYMBOL(drm_atomic_state_clear); | |
210 | ||
211 | /** | |
212 | * drm_atomic_state_free - free all memory for an atomic state | |
213 | * @state: atomic state to deallocate | |
214 | * | |
215 | * This frees all memory associated with an atomic state, including all the | |
216 | * per-object state for planes, crtcs and connectors. | |
217 | */ | |
218 | void drm_atomic_state_free(struct drm_atomic_state *state) | |
219 | { | |
220 | struct drm_device *dev; | |
221 | struct drm_mode_config *config; | |
222 | ||
223 | if (!state) | |
224 | return; | |
225 | ||
226 | dev = state->dev; | |
227 | config = &dev->mode_config; | |
228 | ||
229 | drm_atomic_state_clear(state); | |
230 | ||
231 | DRM_DEBUG_ATOMIC("Freeing atomic state %p\n", state); | |
232 | ||
233 | if (config->funcs->atomic_state_free) { | |
234 | config->funcs->atomic_state_free(state); | |
235 | } else { | |
236 | drm_atomic_state_default_release(state); | |
237 | kfree(state); | |
238 | } | |
239 | } | |
240 | EXPORT_SYMBOL(drm_atomic_state_free); | |
241 | ||
242 | /** | |
243 | * drm_atomic_get_crtc_state - get crtc state | |
244 | * @state: global atomic state object | |
245 | * @crtc: crtc to get state object for | |
246 | * | |
247 | * This function returns the crtc state for the given crtc, allocating it if | |
248 | * needed. It will also grab the relevant crtc lock to make sure that the state | |
249 | * is consistent. | |
250 | * | |
251 | * Returns: | |
252 | * | |
253 | * Either the allocated state or the error code encoded into the pointer. When | |
254 | * the error is EDEADLK then the w/w mutex code has detected a deadlock and the | |
255 | * entire atomic sequence must be restarted. All other errors are fatal. | |
256 | */ | |
257 | struct drm_crtc_state * | |
258 | drm_atomic_get_crtc_state(struct drm_atomic_state *state, | |
259 | struct drm_crtc *crtc) | |
260 | { | |
261 | int ret, index = drm_crtc_index(crtc); | |
262 | struct drm_crtc_state *crtc_state; | |
263 | ||
264 | crtc_state = drm_atomic_get_existing_crtc_state(state, crtc); | |
265 | if (crtc_state) | |
266 | return crtc_state; | |
267 | ||
268 | ret = drm_modeset_lock(&crtc->mutex, state->acquire_ctx); | |
269 | if (ret) | |
270 | return ERR_PTR(ret); | |
271 | ||
272 | crtc_state = crtc->funcs->atomic_duplicate_state(crtc); | |
273 | if (!crtc_state) | |
274 | return ERR_PTR(-ENOMEM); | |
275 | ||
276 | state->crtc_states[index] = crtc_state; | |
277 | state->crtcs[index] = crtc; | |
278 | crtc_state->state = state; | |
279 | ||
280 | DRM_DEBUG_ATOMIC("Added [CRTC:%d:%s] %p state to %p\n", | |
281 | crtc->base.id, crtc->name, crtc_state, state); | |
282 | ||
283 | return crtc_state; | |
284 | } | |
285 | EXPORT_SYMBOL(drm_atomic_get_crtc_state); | |
286 | ||
287 | /** | |
288 | * drm_atomic_set_mode_for_crtc - set mode for CRTC | |
289 | * @state: the CRTC whose incoming state to update | |
290 | * @mode: kernel-internal mode to use for the CRTC, or NULL to disable | |
291 | * | |
292 | * Set a mode (originating from the kernel) on the desired CRTC state. Does | |
293 | * not change any other state properties, including enable, active, or | |
294 | * mode_changed. | |
295 | * | |
296 | * RETURNS: | |
297 | * Zero on success, error code on failure. Cannot return -EDEADLK. | |
298 | */ | |
299 | int drm_atomic_set_mode_for_crtc(struct drm_crtc_state *state, | |
300 | struct drm_display_mode *mode) | |
301 | { | |
302 | struct drm_mode_modeinfo umode; | |
303 | ||
304 | /* Early return for no change. */ | |
305 | if (mode && memcmp(&state->mode, mode, sizeof(*mode)) == 0) | |
306 | return 0; | |
307 | ||
308 | drm_property_unreference_blob(state->mode_blob); | |
309 | state->mode_blob = NULL; | |
310 | ||
311 | if (mode) { | |
312 | drm_mode_convert_to_umode(&umode, mode); | |
313 | state->mode_blob = | |
314 | drm_property_create_blob(state->crtc->dev, | |
315 | sizeof(umode), | |
316 | &umode); | |
317 | if (IS_ERR(state->mode_blob)) | |
318 | return PTR_ERR(state->mode_blob); | |
319 | ||
320 | drm_mode_copy(&state->mode, mode); | |
321 | state->enable = true; | |
322 | DRM_DEBUG_ATOMIC("Set [MODE:%s] for CRTC state %p\n", | |
323 | mode->name, state); | |
324 | } else { | |
325 | memset(&state->mode, 0, sizeof(state->mode)); | |
326 | state->enable = false; | |
327 | DRM_DEBUG_ATOMIC("Set [NOMODE] for CRTC state %p\n", | |
328 | state); | |
329 | } | |
330 | ||
331 | return 0; | |
332 | } | |
333 | EXPORT_SYMBOL(drm_atomic_set_mode_for_crtc); | |
334 | ||
335 | /** | |
336 | * drm_atomic_set_mode_prop_for_crtc - set mode for CRTC | |
337 | * @state: the CRTC whose incoming state to update | |
338 | * @blob: pointer to blob property to use for mode | |
339 | * | |
340 | * Set a mode (originating from a blob property) on the desired CRTC state. | |
341 | * This function will take a reference on the blob property for the CRTC state, | |
342 | * and release the reference held on the state's existing mode property, if any | |
343 | * was set. | |
344 | * | |
345 | * RETURNS: | |
346 | * Zero on success, error code on failure. Cannot return -EDEADLK. | |
347 | */ | |
348 | int drm_atomic_set_mode_prop_for_crtc(struct drm_crtc_state *state, | |
349 | struct drm_property_blob *blob) | |
350 | { | |
351 | if (blob == state->mode_blob) | |
352 | return 0; | |
353 | ||
354 | drm_property_unreference_blob(state->mode_blob); | |
355 | state->mode_blob = NULL; | |
356 | ||
357 | if (blob) { | |
358 | if (blob->length != sizeof(struct drm_mode_modeinfo) || | |
359 | drm_mode_convert_umode(&state->mode, | |
360 | (const struct drm_mode_modeinfo *) | |
361 | blob->data)) | |
362 | return -EINVAL; | |
363 | ||
364 | state->mode_blob = drm_property_reference_blob(blob); | |
365 | state->enable = true; | |
366 | DRM_DEBUG_ATOMIC("Set [MODE:%s] for CRTC state %p\n", | |
367 | state->mode.name, state); | |
368 | } else { | |
369 | memset(&state->mode, 0, sizeof(state->mode)); | |
370 | state->enable = false; | |
371 | DRM_DEBUG_ATOMIC("Set [NOMODE] for CRTC state %p\n", | |
372 | state); | |
373 | } | |
374 | ||
375 | return 0; | |
376 | } | |
377 | EXPORT_SYMBOL(drm_atomic_set_mode_prop_for_crtc); | |
378 | ||
379 | /** | |
380 | * drm_atomic_replace_property_blob - replace a blob property | |
381 | * @blob: a pointer to the member blob to be replaced | |
382 | * @new_blob: the new blob to replace with | |
383 | * @replaced: whether the blob has been replaced | |
384 | * | |
385 | * RETURNS: | |
386 | * Zero on success, error code on failure | |
387 | */ | |
388 | static void | |
389 | drm_atomic_replace_property_blob(struct drm_property_blob **blob, | |
390 | struct drm_property_blob *new_blob, | |
391 | bool *replaced) | |
392 | { | |
393 | struct drm_property_blob *old_blob = *blob; | |
394 | ||
395 | if (old_blob == new_blob) | |
396 | return; | |
397 | ||
398 | if (old_blob) | |
399 | drm_property_unreference_blob(old_blob); | |
400 | if (new_blob) | |
401 | drm_property_reference_blob(new_blob); | |
402 | *blob = new_blob; | |
403 | *replaced = true; | |
404 | ||
405 | return; | |
406 | } | |
407 | ||
408 | static int | |
409 | drm_atomic_replace_property_blob_from_id(struct drm_crtc *crtc, | |
410 | struct drm_property_blob **blob, | |
411 | uint64_t blob_id, | |
412 | ssize_t expected_size, | |
413 | bool *replaced) | |
414 | { | |
415 | struct drm_device *dev = crtc->dev; | |
416 | struct drm_property_blob *new_blob = NULL; | |
417 | ||
418 | if (blob_id != 0) { | |
419 | new_blob = drm_property_lookup_blob(dev, blob_id); | |
420 | if (new_blob == NULL) | |
421 | return -EINVAL; | |
422 | if (expected_size > 0 && expected_size != new_blob->length) | |
423 | return -EINVAL; | |
424 | } | |
425 | ||
426 | drm_atomic_replace_property_blob(blob, new_blob, replaced); | |
427 | ||
428 | return 0; | |
429 | } | |
430 | ||
431 | /** | |
432 | * drm_atomic_crtc_set_property - set property on CRTC | |
433 | * @crtc: the drm CRTC to set a property on | |
434 | * @state: the state object to update with the new property value | |
435 | * @property: the property to set | |
436 | * @val: the new property value | |
437 | * | |
438 | * Use this instead of calling crtc->atomic_set_property directly. | |
439 | * This function handles generic/core properties and calls out to | |
440 | * driver's ->atomic_set_property() for driver properties. To ensure | |
441 | * consistent behavior you must call this function rather than the | |
442 | * driver hook directly. | |
443 | * | |
444 | * RETURNS: | |
445 | * Zero on success, error code on failure | |
446 | */ | |
447 | int drm_atomic_crtc_set_property(struct drm_crtc *crtc, | |
448 | struct drm_crtc_state *state, struct drm_property *property, | |
449 | uint64_t val) | |
450 | { | |
451 | struct drm_device *dev = crtc->dev; | |
452 | struct drm_mode_config *config = &dev->mode_config; | |
453 | bool replaced = false; | |
454 | int ret; | |
455 | ||
456 | if (property == config->prop_active) | |
457 | state->active = val; | |
458 | else if (property == config->prop_mode_id) { | |
459 | struct drm_property_blob *mode = | |
460 | drm_property_lookup_blob(dev, val); | |
461 | ret = drm_atomic_set_mode_prop_for_crtc(state, mode); | |
462 | drm_property_unreference_blob(mode); | |
463 | return ret; | |
464 | } else if (property == config->degamma_lut_property) { | |
465 | ret = drm_atomic_replace_property_blob_from_id(crtc, | |
466 | &state->degamma_lut, | |
467 | val, | |
468 | -1, | |
469 | &replaced); | |
470 | state->color_mgmt_changed = replaced; | |
471 | return ret; | |
472 | } else if (property == config->ctm_property) { | |
473 | ret = drm_atomic_replace_property_blob_from_id(crtc, | |
474 | &state->ctm, | |
475 | val, | |
476 | sizeof(struct drm_color_ctm), | |
477 | &replaced); | |
478 | state->color_mgmt_changed = replaced; | |
479 | return ret; | |
480 | } else if (property == config->gamma_lut_property) { | |
481 | ret = drm_atomic_replace_property_blob_from_id(crtc, | |
482 | &state->gamma_lut, | |
483 | val, | |
484 | -1, | |
485 | &replaced); | |
486 | state->color_mgmt_changed = replaced; | |
487 | return ret; | |
488 | } else if (crtc->funcs->atomic_set_property) | |
489 | return crtc->funcs->atomic_set_property(crtc, state, property, val); | |
490 | else | |
491 | return -EINVAL; | |
492 | ||
493 | return 0; | |
494 | } | |
495 | EXPORT_SYMBOL(drm_atomic_crtc_set_property); | |
496 | ||
497 | /** | |
498 | * drm_atomic_crtc_get_property - get property value from CRTC state | |
499 | * @crtc: the drm CRTC to set a property on | |
500 | * @state: the state object to get the property value from | |
501 | * @property: the property to set | |
502 | * @val: return location for the property value | |
503 | * | |
504 | * This function handles generic/core properties and calls out to | |
505 | * driver's ->atomic_get_property() for driver properties. To ensure | |
506 | * consistent behavior you must call this function rather than the | |
507 | * driver hook directly. | |
508 | * | |
509 | * RETURNS: | |
510 | * Zero on success, error code on failure | |
511 | */ | |
512 | static int | |
513 | drm_atomic_crtc_get_property(struct drm_crtc *crtc, | |
514 | const struct drm_crtc_state *state, | |
515 | struct drm_property *property, uint64_t *val) | |
516 | { | |
517 | struct drm_device *dev = crtc->dev; | |
518 | struct drm_mode_config *config = &dev->mode_config; | |
519 | ||
520 | if (property == config->prop_active) | |
521 | *val = state->active; | |
522 | else if (property == config->prop_mode_id) | |
523 | *val = (state->mode_blob) ? state->mode_blob->base.id : 0; | |
524 | else if (property == config->degamma_lut_property) | |
525 | *val = (state->degamma_lut) ? state->degamma_lut->base.id : 0; | |
526 | else if (property == config->ctm_property) | |
527 | *val = (state->ctm) ? state->ctm->base.id : 0; | |
528 | else if (property == config->gamma_lut_property) | |
529 | *val = (state->gamma_lut) ? state->gamma_lut->base.id : 0; | |
530 | else if (crtc->funcs->atomic_get_property) | |
531 | return crtc->funcs->atomic_get_property(crtc, state, property, val); | |
532 | else | |
533 | return -EINVAL; | |
534 | ||
535 | return 0; | |
536 | } | |
537 | ||
538 | /** | |
539 | * drm_atomic_crtc_check - check crtc state | |
540 | * @crtc: crtc to check | |
541 | * @state: crtc state to check | |
542 | * | |
543 | * Provides core sanity checks for crtc state. | |
544 | * | |
545 | * RETURNS: | |
546 | * Zero on success, error code on failure | |
547 | */ | |
548 | static int drm_atomic_crtc_check(struct drm_crtc *crtc, | |
549 | struct drm_crtc_state *state) | |
550 | { | |
551 | /* NOTE: we explicitly don't enforce constraints such as primary | |
552 | * layer covering entire screen, since that is something we want | |
553 | * to allow (on hw that supports it). For hw that does not, it | |
554 | * should be checked in driver's crtc->atomic_check() vfunc. | |
555 | * | |
556 | * TODO: Add generic modeset state checks once we support those. | |
557 | */ | |
558 | ||
559 | if (state->active && !state->enable) { | |
560 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] active without enabled\n", | |
561 | crtc->base.id, crtc->name); | |
562 | return -EINVAL; | |
563 | } | |
564 | ||
565 | /* The state->enable vs. state->mode_blob checks can be WARN_ON, | |
566 | * as this is a kernel-internal detail that userspace should never | |
567 | * be able to trigger. */ | |
568 | if (drm_core_check_feature(crtc->dev, DRIVER_ATOMIC) && | |
569 | WARN_ON(state->enable && !state->mode_blob)) { | |
570 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] enabled without mode blob\n", | |
571 | crtc->base.id, crtc->name); | |
572 | return -EINVAL; | |
573 | } | |
574 | ||
575 | if (drm_core_check_feature(crtc->dev, DRIVER_ATOMIC) && | |
576 | WARN_ON(!state->enable && state->mode_blob)) { | |
577 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] disabled with mode blob\n", | |
578 | crtc->base.id, crtc->name); | |
579 | return -EINVAL; | |
580 | } | |
581 | ||
582 | /* | |
583 | * Reject event generation for when a CRTC is off and stays off. | |
584 | * It wouldn't be hard to implement this, but userspace has a track | |
585 | * record of happily burning through 100% cpu (or worse, crash) when the | |
586 | * display pipe is suspended. To avoid all that fun just reject updates | |
587 | * that ask for events since likely that indicates a bug in the | |
588 | * compositor's drawing loop. This is consistent with the vblank IOCTL | |
589 | * and legacy page_flip IOCTL which also reject service on a disabled | |
590 | * pipe. | |
591 | */ | |
592 | if (state->event && !state->active && !crtc->state->active) { | |
593 | DRM_DEBUG_ATOMIC("[CRTC:%d] requesting event but off\n", | |
594 | crtc->base.id); | |
595 | return -EINVAL; | |
596 | } | |
597 | ||
598 | return 0; | |
599 | } | |
600 | ||
601 | /** | |
602 | * drm_atomic_get_plane_state - get plane state | |
603 | * @state: global atomic state object | |
604 | * @plane: plane to get state object for | |
605 | * | |
606 | * This function returns the plane state for the given plane, allocating it if | |
607 | * needed. It will also grab the relevant plane lock to make sure that the state | |
608 | * is consistent. | |
609 | * | |
610 | * Returns: | |
611 | * | |
612 | * Either the allocated state or the error code encoded into the pointer. When | |
613 | * the error is EDEADLK then the w/w mutex code has detected a deadlock and the | |
614 | * entire atomic sequence must be restarted. All other errors are fatal. | |
615 | */ | |
616 | struct drm_plane_state * | |
617 | drm_atomic_get_plane_state(struct drm_atomic_state *state, | |
618 | struct drm_plane *plane) | |
619 | { | |
620 | int ret, index = drm_plane_index(plane); | |
621 | struct drm_plane_state *plane_state; | |
622 | ||
623 | plane_state = drm_atomic_get_existing_plane_state(state, plane); | |
624 | if (plane_state) | |
625 | return plane_state; | |
626 | ||
627 | ret = drm_modeset_lock(&plane->mutex, state->acquire_ctx); | |
628 | if (ret) | |
629 | return ERR_PTR(ret); | |
630 | ||
631 | plane_state = plane->funcs->atomic_duplicate_state(plane); | |
632 | if (!plane_state) | |
633 | return ERR_PTR(-ENOMEM); | |
634 | ||
635 | state->plane_states[index] = plane_state; | |
636 | state->planes[index] = plane; | |
637 | plane_state->state = state; | |
638 | ||
639 | DRM_DEBUG_ATOMIC("Added [PLANE:%d:%s] %p state to %p\n", | |
640 | plane->base.id, plane->name, plane_state, state); | |
641 | ||
642 | if (plane_state->crtc) { | |
643 | struct drm_crtc_state *crtc_state; | |
644 | ||
645 | crtc_state = drm_atomic_get_crtc_state(state, | |
646 | plane_state->crtc); | |
647 | if (IS_ERR(crtc_state)) | |
648 | return ERR_CAST(crtc_state); | |
649 | } | |
650 | ||
651 | return plane_state; | |
652 | } | |
653 | EXPORT_SYMBOL(drm_atomic_get_plane_state); | |
654 | ||
655 | /** | |
656 | * drm_atomic_plane_set_property - set property on plane | |
657 | * @plane: the drm plane to set a property on | |
658 | * @state: the state object to update with the new property value | |
659 | * @property: the property to set | |
660 | * @val: the new property value | |
661 | * | |
662 | * Use this instead of calling plane->atomic_set_property directly. | |
663 | * This function handles generic/core properties and calls out to | |
664 | * driver's ->atomic_set_property() for driver properties. To ensure | |
665 | * consistent behavior you must call this function rather than the | |
666 | * driver hook directly. | |
667 | * | |
668 | * RETURNS: | |
669 | * Zero on success, error code on failure | |
670 | */ | |
671 | int drm_atomic_plane_set_property(struct drm_plane *plane, | |
672 | struct drm_plane_state *state, struct drm_property *property, | |
673 | uint64_t val) | |
674 | { | |
675 | struct drm_device *dev = plane->dev; | |
676 | struct drm_mode_config *config = &dev->mode_config; | |
677 | ||
678 | if (property == config->prop_fb_id) { | |
679 | struct drm_framebuffer *fb = drm_framebuffer_lookup(dev, val); | |
680 | drm_atomic_set_fb_for_plane(state, fb); | |
681 | if (fb) | |
682 | drm_framebuffer_unreference(fb); | |
683 | } else if (property == config->prop_crtc_id) { | |
684 | struct drm_crtc *crtc = drm_crtc_find(dev, val); | |
685 | return drm_atomic_set_crtc_for_plane(state, crtc); | |
686 | } else if (property == config->prop_crtc_x) { | |
687 | state->crtc_x = U642I64(val); | |
688 | } else if (property == config->prop_crtc_y) { | |
689 | state->crtc_y = U642I64(val); | |
690 | } else if (property == config->prop_crtc_w) { | |
691 | state->crtc_w = val; | |
692 | } else if (property == config->prop_crtc_h) { | |
693 | state->crtc_h = val; | |
694 | } else if (property == config->prop_src_x) { | |
695 | state->src_x = val; | |
696 | } else if (property == config->prop_src_y) { | |
697 | state->src_y = val; | |
698 | } else if (property == config->prop_src_w) { | |
699 | state->src_w = val; | |
700 | } else if (property == config->prop_src_h) { | |
701 | state->src_h = val; | |
702 | } else if (property == config->rotation_property) { | |
703 | state->rotation = val; | |
704 | } else if (plane->funcs->atomic_set_property) { | |
705 | return plane->funcs->atomic_set_property(plane, state, | |
706 | property, val); | |
707 | } else { | |
708 | return -EINVAL; | |
709 | } | |
710 | ||
711 | return 0; | |
712 | } | |
713 | EXPORT_SYMBOL(drm_atomic_plane_set_property); | |
714 | ||
715 | /** | |
716 | * drm_atomic_plane_get_property - get property value from plane state | |
717 | * @plane: the drm plane to set a property on | |
718 | * @state: the state object to get the property value from | |
719 | * @property: the property to set | |
720 | * @val: return location for the property value | |
721 | * | |
722 | * This function handles generic/core properties and calls out to | |
723 | * driver's ->atomic_get_property() for driver properties. To ensure | |
724 | * consistent behavior you must call this function rather than the | |
725 | * driver hook directly. | |
726 | * | |
727 | * RETURNS: | |
728 | * Zero on success, error code on failure | |
729 | */ | |
730 | static int | |
731 | drm_atomic_plane_get_property(struct drm_plane *plane, | |
732 | const struct drm_plane_state *state, | |
733 | struct drm_property *property, uint64_t *val) | |
734 | { | |
735 | struct drm_device *dev = plane->dev; | |
736 | struct drm_mode_config *config = &dev->mode_config; | |
737 | ||
738 | if (property == config->prop_fb_id) { | |
739 | *val = (state->fb) ? state->fb->base.id : 0; | |
740 | } else if (property == config->prop_crtc_id) { | |
741 | *val = (state->crtc) ? state->crtc->base.id : 0; | |
742 | } else if (property == config->prop_crtc_x) { | |
743 | *val = I642U64(state->crtc_x); | |
744 | } else if (property == config->prop_crtc_y) { | |
745 | *val = I642U64(state->crtc_y); | |
746 | } else if (property == config->prop_crtc_w) { | |
747 | *val = state->crtc_w; | |
748 | } else if (property == config->prop_crtc_h) { | |
749 | *val = state->crtc_h; | |
750 | } else if (property == config->prop_src_x) { | |
751 | *val = state->src_x; | |
752 | } else if (property == config->prop_src_y) { | |
753 | *val = state->src_y; | |
754 | } else if (property == config->prop_src_w) { | |
755 | *val = state->src_w; | |
756 | } else if (property == config->prop_src_h) { | |
757 | *val = state->src_h; | |
758 | } else if (property == config->rotation_property) { | |
759 | *val = state->rotation; | |
760 | } else if (plane->funcs->atomic_get_property) { | |
761 | return plane->funcs->atomic_get_property(plane, state, property, val); | |
762 | } else { | |
763 | return -EINVAL; | |
764 | } | |
765 | ||
766 | return 0; | |
767 | } | |
768 | ||
769 | static bool | |
770 | plane_switching_crtc(struct drm_atomic_state *state, | |
771 | struct drm_plane *plane, | |
772 | struct drm_plane_state *plane_state) | |
773 | { | |
774 | if (!plane->state->crtc || !plane_state->crtc) | |
775 | return false; | |
776 | ||
777 | if (plane->state->crtc == plane_state->crtc) | |
778 | return false; | |
779 | ||
780 | /* This could be refined, but currently there's no helper or driver code | |
781 | * to implement direct switching of active planes nor userspace to take | |
782 | * advantage of more direct plane switching without the intermediate | |
783 | * full OFF state. | |
784 | */ | |
785 | return true; | |
786 | } | |
787 | ||
788 | /** | |
789 | * drm_atomic_plane_check - check plane state | |
790 | * @plane: plane to check | |
791 | * @state: plane state to check | |
792 | * | |
793 | * Provides core sanity checks for plane state. | |
794 | * | |
795 | * RETURNS: | |
796 | * Zero on success, error code on failure | |
797 | */ | |
798 | static int drm_atomic_plane_check(struct drm_plane *plane, | |
799 | struct drm_plane_state *state) | |
800 | { | |
801 | unsigned int fb_width, fb_height; | |
802 | int ret; | |
803 | ||
804 | /* either *both* CRTC and FB must be set, or neither */ | |
805 | if (WARN_ON(state->crtc && !state->fb)) { | |
806 | DRM_DEBUG_ATOMIC("CRTC set but no FB\n"); | |
807 | return -EINVAL; | |
808 | } else if (WARN_ON(state->fb && !state->crtc)) { | |
809 | DRM_DEBUG_ATOMIC("FB set but no CRTC\n"); | |
810 | return -EINVAL; | |
811 | } | |
812 | ||
813 | /* if disabled, we don't care about the rest of the state: */ | |
814 | if (!state->crtc) | |
815 | return 0; | |
816 | ||
817 | /* Check whether this plane is usable on this CRTC */ | |
818 | if (!(plane->possible_crtcs & drm_crtc_mask(state->crtc))) { | |
819 | DRM_DEBUG_ATOMIC("Invalid crtc for plane\n"); | |
820 | return -EINVAL; | |
821 | } | |
822 | ||
823 | /* Check whether this plane supports the fb pixel format. */ | |
824 | ret = drm_plane_check_pixel_format(plane, state->fb->pixel_format); | |
825 | if (ret) { | |
826 | DRM_DEBUG_ATOMIC("Invalid pixel format %s\n", | |
827 | drm_get_format_name(state->fb->pixel_format)); | |
828 | return ret; | |
829 | } | |
830 | ||
831 | /* Give drivers some help against integer overflows */ | |
832 | if (state->crtc_w > INT_MAX || | |
833 | state->crtc_x > INT_MAX - (int32_t) state->crtc_w || | |
834 | state->crtc_h > INT_MAX || | |
835 | state->crtc_y > INT_MAX - (int32_t) state->crtc_h) { | |
836 | DRM_DEBUG_ATOMIC("Invalid CRTC coordinates %ux%u+%d+%d\n", | |
837 | state->crtc_w, state->crtc_h, | |
838 | state->crtc_x, state->crtc_y); | |
839 | return -ERANGE; | |
840 | } | |
841 | ||
842 | fb_width = state->fb->width << 16; | |
843 | fb_height = state->fb->height << 16; | |
844 | ||
845 | /* Make sure source coordinates are inside the fb. */ | |
846 | if (state->src_w > fb_width || | |
847 | state->src_x > fb_width - state->src_w || | |
848 | state->src_h > fb_height || | |
849 | state->src_y > fb_height - state->src_h) { | |
850 | DRM_DEBUG_ATOMIC("Invalid source coordinates " | |
851 | "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n", | |
852 | state->src_w >> 16, ((state->src_w & 0xffff) * 15625) >> 10, | |
853 | state->src_h >> 16, ((state->src_h & 0xffff) * 15625) >> 10, | |
854 | state->src_x >> 16, ((state->src_x & 0xffff) * 15625) >> 10, | |
855 | state->src_y >> 16, ((state->src_y & 0xffff) * 15625) >> 10); | |
856 | return -ENOSPC; | |
857 | } | |
858 | ||
859 | if (plane_switching_crtc(state->state, plane, state)) { | |
860 | DRM_DEBUG_ATOMIC("[PLANE:%d:%s] switching CRTC directly\n", | |
861 | plane->base.id, plane->name); | |
862 | return -EINVAL; | |
863 | } | |
864 | ||
865 | return 0; | |
866 | } | |
867 | ||
868 | /** | |
869 | * drm_atomic_get_connector_state - get connector state | |
870 | * @state: global atomic state object | |
871 | * @connector: connector to get state object for | |
872 | * | |
873 | * This function returns the connector state for the given connector, | |
874 | * allocating it if needed. It will also grab the relevant connector lock to | |
875 | * make sure that the state is consistent. | |
876 | * | |
877 | * Returns: | |
878 | * | |
879 | * Either the allocated state or the error code encoded into the pointer. When | |
880 | * the error is EDEADLK then the w/w mutex code has detected a deadlock and the | |
881 | * entire atomic sequence must be restarted. All other errors are fatal. | |
882 | */ | |
883 | struct drm_connector_state * | |
884 | drm_atomic_get_connector_state(struct drm_atomic_state *state, | |
885 | struct drm_connector *connector) | |
886 | { | |
887 | int ret, index; | |
888 | struct drm_mode_config *config = &connector->dev->mode_config; | |
889 | struct drm_connector_state *connector_state; | |
890 | ||
891 | ret = drm_modeset_lock(&config->connection_mutex, state->acquire_ctx); | |
892 | if (ret) | |
893 | return ERR_PTR(ret); | |
894 | ||
895 | index = drm_connector_index(connector); | |
896 | ||
897 | if (index >= state->num_connector) { | |
898 | struct drm_connector **c; | |
899 | struct drm_connector_state **cs; | |
900 | int alloc = max(index + 1, config->num_connector); | |
901 | ||
902 | c = krealloc(state->connectors, alloc * sizeof(*state->connectors), GFP_KERNEL); | |
903 | if (!c) | |
904 | return ERR_PTR(-ENOMEM); | |
905 | ||
906 | state->connectors = c; | |
907 | memset(&state->connectors[state->num_connector], 0, | |
908 | sizeof(*state->connectors) * (alloc - state->num_connector)); | |
909 | ||
910 | cs = krealloc(state->connector_states, alloc * sizeof(*state->connector_states), GFP_KERNEL); | |
911 | if (!cs) | |
912 | return ERR_PTR(-ENOMEM); | |
913 | ||
914 | state->connector_states = cs; | |
915 | memset(&state->connector_states[state->num_connector], 0, | |
916 | sizeof(*state->connector_states) * (alloc - state->num_connector)); | |
917 | state->num_connector = alloc; | |
918 | } | |
919 | ||
920 | if (state->connector_states[index]) | |
921 | return state->connector_states[index]; | |
922 | ||
923 | connector_state = connector->funcs->atomic_duplicate_state(connector); | |
924 | if (!connector_state) | |
925 | return ERR_PTR(-ENOMEM); | |
926 | ||
927 | state->connector_states[index] = connector_state; | |
928 | state->connectors[index] = connector; | |
929 | connector_state->state = state; | |
930 | ||
931 | DRM_DEBUG_ATOMIC("Added [CONNECTOR:%d] %p state to %p\n", | |
932 | connector->base.id, connector_state, state); | |
933 | ||
934 | if (connector_state->crtc) { | |
935 | struct drm_crtc_state *crtc_state; | |
936 | ||
937 | crtc_state = drm_atomic_get_crtc_state(state, | |
938 | connector_state->crtc); | |
939 | if (IS_ERR(crtc_state)) | |
940 | return ERR_CAST(crtc_state); | |
941 | } | |
942 | ||
943 | return connector_state; | |
944 | } | |
945 | EXPORT_SYMBOL(drm_atomic_get_connector_state); | |
946 | ||
947 | /** | |
948 | * drm_atomic_connector_set_property - set property on connector. | |
949 | * @connector: the drm connector to set a property on | |
950 | * @state: the state object to update with the new property value | |
951 | * @property: the property to set | |
952 | * @val: the new property value | |
953 | * | |
954 | * Use this instead of calling connector->atomic_set_property directly. | |
955 | * This function handles generic/core properties and calls out to | |
956 | * driver's ->atomic_set_property() for driver properties. To ensure | |
957 | * consistent behavior you must call this function rather than the | |
958 | * driver hook directly. | |
959 | * | |
960 | * RETURNS: | |
961 | * Zero on success, error code on failure | |
962 | */ | |
963 | int drm_atomic_connector_set_property(struct drm_connector *connector, | |
964 | struct drm_connector_state *state, struct drm_property *property, | |
965 | uint64_t val) | |
966 | { | |
967 | struct drm_device *dev = connector->dev; | |
968 | struct drm_mode_config *config = &dev->mode_config; | |
969 | ||
970 | if (property == config->prop_crtc_id) { | |
971 | struct drm_crtc *crtc = drm_crtc_find(dev, val); | |
972 | return drm_atomic_set_crtc_for_connector(state, crtc); | |
973 | } else if (property == config->dpms_property) { | |
974 | /* setting DPMS property requires special handling, which | |
975 | * is done in legacy setprop path for us. Disallow (for | |
976 | * now?) atomic writes to DPMS property: | |
977 | */ | |
978 | return -EINVAL; | |
979 | } else if (connector->funcs->atomic_set_property) { | |
980 | return connector->funcs->atomic_set_property(connector, | |
981 | state, property, val); | |
982 | } else { | |
983 | return -EINVAL; | |
984 | } | |
985 | } | |
986 | EXPORT_SYMBOL(drm_atomic_connector_set_property); | |
987 | ||
988 | /** | |
989 | * drm_atomic_connector_get_property - get property value from connector state | |
990 | * @connector: the drm connector to set a property on | |
991 | * @state: the state object to get the property value from | |
992 | * @property: the property to set | |
993 | * @val: return location for the property value | |
994 | * | |
995 | * This function handles generic/core properties and calls out to | |
996 | * driver's ->atomic_get_property() for driver properties. To ensure | |
997 | * consistent behavior you must call this function rather than the | |
998 | * driver hook directly. | |
999 | * | |
1000 | * RETURNS: | |
1001 | * Zero on success, error code on failure | |
1002 | */ | |
1003 | static int | |
1004 | drm_atomic_connector_get_property(struct drm_connector *connector, | |
1005 | const struct drm_connector_state *state, | |
1006 | struct drm_property *property, uint64_t *val) | |
1007 | { | |
1008 | struct drm_device *dev = connector->dev; | |
1009 | struct drm_mode_config *config = &dev->mode_config; | |
1010 | ||
1011 | if (property == config->prop_crtc_id) { | |
1012 | *val = (state->crtc) ? state->crtc->base.id : 0; | |
1013 | } else if (property == config->dpms_property) { | |
1014 | *val = connector->dpms; | |
1015 | } else if (connector->funcs->atomic_get_property) { | |
1016 | return connector->funcs->atomic_get_property(connector, | |
1017 | state, property, val); | |
1018 | } else { | |
1019 | return -EINVAL; | |
1020 | } | |
1021 | ||
1022 | return 0; | |
1023 | } | |
1024 | ||
1025 | int drm_atomic_get_property(struct drm_mode_object *obj, | |
1026 | struct drm_property *property, uint64_t *val) | |
1027 | { | |
1028 | struct drm_device *dev = property->dev; | |
1029 | int ret; | |
1030 | ||
1031 | switch (obj->type) { | |
1032 | case DRM_MODE_OBJECT_CONNECTOR: { | |
1033 | struct drm_connector *connector = obj_to_connector(obj); | |
1034 | WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex)); | |
1035 | ret = drm_atomic_connector_get_property(connector, | |
1036 | connector->state, property, val); | |
1037 | break; | |
1038 | } | |
1039 | case DRM_MODE_OBJECT_CRTC: { | |
1040 | struct drm_crtc *crtc = obj_to_crtc(obj); | |
1041 | WARN_ON(!drm_modeset_is_locked(&crtc->mutex)); | |
1042 | ret = drm_atomic_crtc_get_property(crtc, | |
1043 | crtc->state, property, val); | |
1044 | break; | |
1045 | } | |
1046 | case DRM_MODE_OBJECT_PLANE: { | |
1047 | struct drm_plane *plane = obj_to_plane(obj); | |
1048 | WARN_ON(!drm_modeset_is_locked(&plane->mutex)); | |
1049 | ret = drm_atomic_plane_get_property(plane, | |
1050 | plane->state, property, val); | |
1051 | break; | |
1052 | } | |
1053 | default: | |
1054 | ret = -EINVAL; | |
1055 | break; | |
1056 | } | |
1057 | ||
1058 | return ret; | |
1059 | } | |
1060 | ||
1061 | /** | |
1062 | * drm_atomic_set_crtc_for_plane - set crtc for plane | |
1063 | * @plane_state: the plane whose incoming state to update | |
1064 | * @crtc: crtc to use for the plane | |
1065 | * | |
1066 | * Changing the assigned crtc for a plane requires us to grab the lock and state | |
1067 | * for the new crtc, as needed. This function takes care of all these details | |
1068 | * besides updating the pointer in the state object itself. | |
1069 | * | |
1070 | * Returns: | |
1071 | * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK | |
1072 | * then the w/w mutex code has detected a deadlock and the entire atomic | |
1073 | * sequence must be restarted. All other errors are fatal. | |
1074 | */ | |
1075 | int | |
1076 | drm_atomic_set_crtc_for_plane(struct drm_plane_state *plane_state, | |
1077 | struct drm_crtc *crtc) | |
1078 | { | |
1079 | struct drm_plane *plane = plane_state->plane; | |
1080 | struct drm_crtc_state *crtc_state; | |
1081 | ||
1082 | if (plane_state->crtc) { | |
1083 | crtc_state = drm_atomic_get_crtc_state(plane_state->state, | |
1084 | plane_state->crtc); | |
1085 | if (WARN_ON(IS_ERR(crtc_state))) | |
1086 | return PTR_ERR(crtc_state); | |
1087 | ||
1088 | crtc_state->plane_mask &= ~(1 << drm_plane_index(plane)); | |
1089 | } | |
1090 | ||
1091 | plane_state->crtc = crtc; | |
1092 | ||
1093 | if (crtc) { | |
1094 | crtc_state = drm_atomic_get_crtc_state(plane_state->state, | |
1095 | crtc); | |
1096 | if (IS_ERR(crtc_state)) | |
1097 | return PTR_ERR(crtc_state); | |
1098 | crtc_state->plane_mask |= (1 << drm_plane_index(plane)); | |
1099 | } | |
1100 | ||
1101 | if (crtc) | |
1102 | DRM_DEBUG_ATOMIC("Link plane state %p to [CRTC:%d:%s]\n", | |
1103 | plane_state, crtc->base.id, crtc->name); | |
1104 | else | |
1105 | DRM_DEBUG_ATOMIC("Link plane state %p to [NOCRTC]\n", | |
1106 | plane_state); | |
1107 | ||
1108 | return 0; | |
1109 | } | |
1110 | EXPORT_SYMBOL(drm_atomic_set_crtc_for_plane); | |
1111 | ||
1112 | /** | |
1113 | * drm_atomic_set_fb_for_plane - set framebuffer for plane | |
1114 | * @plane_state: atomic state object for the plane | |
1115 | * @fb: fb to use for the plane | |
1116 | * | |
1117 | * Changing the assigned framebuffer for a plane requires us to grab a reference | |
1118 | * to the new fb and drop the reference to the old fb, if there is one. This | |
1119 | * function takes care of all these details besides updating the pointer in the | |
1120 | * state object itself. | |
1121 | */ | |
1122 | void | |
1123 | drm_atomic_set_fb_for_plane(struct drm_plane_state *plane_state, | |
1124 | struct drm_framebuffer *fb) | |
1125 | { | |
1126 | if (plane_state->fb) | |
1127 | drm_framebuffer_unreference(plane_state->fb); | |
1128 | if (fb) | |
1129 | drm_framebuffer_reference(fb); | |
1130 | plane_state->fb = fb; | |
1131 | ||
1132 | if (fb) | |
1133 | DRM_DEBUG_ATOMIC("Set [FB:%d] for plane state %p\n", | |
1134 | fb->base.id, plane_state); | |
1135 | else | |
1136 | DRM_DEBUG_ATOMIC("Set [NOFB] for plane state %p\n", | |
1137 | plane_state); | |
1138 | } | |
1139 | EXPORT_SYMBOL(drm_atomic_set_fb_for_plane); | |
1140 | ||
1141 | /** | |
1142 | * drm_atomic_set_crtc_for_connector - set crtc for connector | |
1143 | * @conn_state: atomic state object for the connector | |
1144 | * @crtc: crtc to use for the connector | |
1145 | * | |
1146 | * Changing the assigned crtc for a connector requires us to grab the lock and | |
1147 | * state for the new crtc, as needed. This function takes care of all these | |
1148 | * details besides updating the pointer in the state object itself. | |
1149 | * | |
1150 | * Returns: | |
1151 | * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK | |
1152 | * then the w/w mutex code has detected a deadlock and the entire atomic | |
1153 | * sequence must be restarted. All other errors are fatal. | |
1154 | */ | |
1155 | int | |
1156 | drm_atomic_set_crtc_for_connector(struct drm_connector_state *conn_state, | |
1157 | struct drm_crtc *crtc) | |
1158 | { | |
1159 | struct drm_crtc_state *crtc_state; | |
1160 | ||
1161 | if (conn_state->crtc && conn_state->crtc != crtc) { | |
1162 | crtc_state = drm_atomic_get_existing_crtc_state(conn_state->state, | |
1163 | conn_state->crtc); | |
1164 | ||
1165 | crtc_state->connector_mask &= | |
1166 | ~(1 << drm_connector_index(conn_state->connector)); | |
1167 | } | |
1168 | ||
1169 | if (crtc) { | |
1170 | crtc_state = drm_atomic_get_crtc_state(conn_state->state, crtc); | |
1171 | if (IS_ERR(crtc_state)) | |
1172 | return PTR_ERR(crtc_state); | |
1173 | ||
1174 | crtc_state->connector_mask |= | |
1175 | 1 << drm_connector_index(conn_state->connector); | |
1176 | } | |
1177 | ||
1178 | conn_state->crtc = crtc; | |
1179 | ||
1180 | if (crtc) | |
1181 | DRM_DEBUG_ATOMIC("Link connector state %p to [CRTC:%d:%s]\n", | |
1182 | conn_state, crtc->base.id, crtc->name); | |
1183 | else | |
1184 | DRM_DEBUG_ATOMIC("Link connector state %p to [NOCRTC]\n", | |
1185 | conn_state); | |
1186 | ||
1187 | return 0; | |
1188 | } | |
1189 | EXPORT_SYMBOL(drm_atomic_set_crtc_for_connector); | |
1190 | ||
1191 | /** | |
1192 | * drm_atomic_add_affected_connectors - add connectors for crtc | |
1193 | * @state: atomic state | |
1194 | * @crtc: DRM crtc | |
1195 | * | |
1196 | * This function walks the current configuration and adds all connectors | |
1197 | * currently using @crtc to the atomic configuration @state. Note that this | |
1198 | * function must acquire the connection mutex. This can potentially cause | |
1199 | * unneeded seralization if the update is just for the planes on one crtc. Hence | |
1200 | * drivers and helpers should only call this when really needed (e.g. when a | |
1201 | * full modeset needs to happen due to some change). | |
1202 | * | |
1203 | * Returns: | |
1204 | * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK | |
1205 | * then the w/w mutex code has detected a deadlock and the entire atomic | |
1206 | * sequence must be restarted. All other errors are fatal. | |
1207 | */ | |
1208 | int | |
1209 | drm_atomic_add_affected_connectors(struct drm_atomic_state *state, | |
1210 | struct drm_crtc *crtc) | |
1211 | { | |
1212 | struct drm_mode_config *config = &state->dev->mode_config; | |
1213 | struct drm_connector *connector; | |
1214 | struct drm_connector_state *conn_state; | |
1215 | int ret; | |
1216 | ||
1217 | ret = drm_modeset_lock(&config->connection_mutex, state->acquire_ctx); | |
1218 | if (ret) | |
1219 | return ret; | |
1220 | ||
1221 | DRM_DEBUG_ATOMIC("Adding all current connectors for [CRTC:%d:%s] to %p\n", | |
1222 | crtc->base.id, crtc->name, state); | |
1223 | ||
1224 | /* | |
1225 | * Changed connectors are already in @state, so only need to look at the | |
1226 | * current configuration. | |
1227 | */ | |
1228 | drm_for_each_connector(connector, state->dev) { | |
1229 | if (connector->state->crtc != crtc) | |
1230 | continue; | |
1231 | ||
1232 | conn_state = drm_atomic_get_connector_state(state, connector); | |
1233 | if (IS_ERR(conn_state)) | |
1234 | return PTR_ERR(conn_state); | |
1235 | } | |
1236 | ||
1237 | return 0; | |
1238 | } | |
1239 | EXPORT_SYMBOL(drm_atomic_add_affected_connectors); | |
1240 | ||
1241 | /** | |
1242 | * drm_atomic_add_affected_planes - add planes for crtc | |
1243 | * @state: atomic state | |
1244 | * @crtc: DRM crtc | |
1245 | * | |
1246 | * This function walks the current configuration and adds all planes | |
1247 | * currently used by @crtc to the atomic configuration @state. This is useful | |
1248 | * when an atomic commit also needs to check all currently enabled plane on | |
1249 | * @crtc, e.g. when changing the mode. It's also useful when re-enabling a CRTC | |
1250 | * to avoid special code to force-enable all planes. | |
1251 | * | |
1252 | * Since acquiring a plane state will always also acquire the w/w mutex of the | |
1253 | * current CRTC for that plane (if there is any) adding all the plane states for | |
1254 | * a CRTC will not reduce parallism of atomic updates. | |
1255 | * | |
1256 | * Returns: | |
1257 | * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK | |
1258 | * then the w/w mutex code has detected a deadlock and the entire atomic | |
1259 | * sequence must be restarted. All other errors are fatal. | |
1260 | */ | |
1261 | int | |
1262 | drm_atomic_add_affected_planes(struct drm_atomic_state *state, | |
1263 | struct drm_crtc *crtc) | |
1264 | { | |
1265 | struct drm_plane *plane; | |
1266 | ||
1267 | WARN_ON(!drm_atomic_get_existing_crtc_state(state, crtc)); | |
1268 | ||
1269 | drm_for_each_plane_mask(plane, state->dev, crtc->state->plane_mask) { | |
1270 | struct drm_plane_state *plane_state = | |
1271 | drm_atomic_get_plane_state(state, plane); | |
1272 | ||
1273 | if (IS_ERR(plane_state)) | |
1274 | return PTR_ERR(plane_state); | |
1275 | } | |
1276 | return 0; | |
1277 | } | |
1278 | EXPORT_SYMBOL(drm_atomic_add_affected_planes); | |
1279 | ||
1280 | /** | |
1281 | * drm_atomic_legacy_backoff - locking backoff for legacy ioctls | |
1282 | * @state: atomic state | |
1283 | * | |
1284 | * This function should be used by legacy entry points which don't understand | |
1285 | * -EDEADLK semantics. For simplicity this one will grab all modeset locks after | |
1286 | * the slowpath completed. | |
1287 | */ | |
1288 | void drm_atomic_legacy_backoff(struct drm_atomic_state *state) | |
1289 | { | |
1290 | int ret; | |
1291 | ||
1292 | retry: | |
1293 | drm_modeset_backoff(state->acquire_ctx); | |
1294 | ||
1295 | ret = drm_modeset_lock_all_ctx(state->dev, state->acquire_ctx); | |
1296 | if (ret) | |
1297 | goto retry; | |
1298 | } | |
1299 | EXPORT_SYMBOL(drm_atomic_legacy_backoff); | |
1300 | ||
1301 | /** | |
1302 | * drm_atomic_check_only - check whether a given config would work | |
1303 | * @state: atomic configuration to check | |
1304 | * | |
1305 | * Note that this function can return -EDEADLK if the driver needed to acquire | |
1306 | * more locks but encountered a deadlock. The caller must then do the usual w/w | |
1307 | * backoff dance and restart. All other errors are fatal. | |
1308 | * | |
1309 | * Returns: | |
1310 | * 0 on success, negative error code on failure. | |
1311 | */ | |
1312 | int drm_atomic_check_only(struct drm_atomic_state *state) | |
1313 | { | |
1314 | struct drm_device *dev = state->dev; | |
1315 | struct drm_mode_config *config = &dev->mode_config; | |
1316 | struct drm_plane *plane; | |
1317 | struct drm_plane_state *plane_state; | |
1318 | struct drm_crtc *crtc; | |
1319 | struct drm_crtc_state *crtc_state; | |
1320 | int i, ret = 0; | |
1321 | ||
1322 | DRM_DEBUG_ATOMIC("checking %p\n", state); | |
1323 | ||
1324 | for_each_plane_in_state(state, plane, plane_state, i) { | |
1325 | ret = drm_atomic_plane_check(plane, plane_state); | |
1326 | if (ret) { | |
1327 | DRM_DEBUG_ATOMIC("[PLANE:%d:%s] atomic core check failed\n", | |
1328 | plane->base.id, plane->name); | |
1329 | return ret; | |
1330 | } | |
1331 | } | |
1332 | ||
1333 | for_each_crtc_in_state(state, crtc, crtc_state, i) { | |
1334 | ret = drm_atomic_crtc_check(crtc, crtc_state); | |
1335 | if (ret) { | |
1336 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] atomic core check failed\n", | |
1337 | crtc->base.id, crtc->name); | |
1338 | return ret; | |
1339 | } | |
1340 | } | |
1341 | ||
1342 | if (config->funcs->atomic_check) | |
1343 | ret = config->funcs->atomic_check(state->dev, state); | |
1344 | ||
1345 | if (!state->allow_modeset) { | |
1346 | for_each_crtc_in_state(state, crtc, crtc_state, i) { | |
1347 | if (drm_atomic_crtc_needs_modeset(crtc_state)) { | |
1348 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] requires full modeset\n", | |
1349 | crtc->base.id, crtc->name); | |
1350 | return -EINVAL; | |
1351 | } | |
1352 | } | |
1353 | } | |
1354 | ||
1355 | return ret; | |
1356 | } | |
1357 | EXPORT_SYMBOL(drm_atomic_check_only); | |
1358 | ||
1359 | /** | |
1360 | * drm_atomic_commit - commit configuration atomically | |
1361 | * @state: atomic configuration to check | |
1362 | * | |
1363 | * Note that this function can return -EDEADLK if the driver needed to acquire | |
1364 | * more locks but encountered a deadlock. The caller must then do the usual w/w | |
1365 | * backoff dance and restart. All other errors are fatal. | |
1366 | * | |
1367 | * Also note that on successful execution ownership of @state is transferred | |
1368 | * from the caller of this function to the function itself. The caller must not | |
1369 | * free or in any other way access @state. If the function fails then the caller | |
1370 | * must clean up @state itself. | |
1371 | * | |
1372 | * Returns: | |
1373 | * 0 on success, negative error code on failure. | |
1374 | */ | |
1375 | int drm_atomic_commit(struct drm_atomic_state *state) | |
1376 | { | |
1377 | struct drm_mode_config *config = &state->dev->mode_config; | |
1378 | int ret; | |
1379 | ||
1380 | ret = drm_atomic_check_only(state); | |
1381 | if (ret) | |
1382 | return ret; | |
1383 | ||
1384 | DRM_DEBUG_ATOMIC("commiting %p\n", state); | |
1385 | ||
1386 | return config->funcs->atomic_commit(state->dev, state, false); | |
1387 | } | |
1388 | EXPORT_SYMBOL(drm_atomic_commit); | |
1389 | ||
1390 | /** | |
1391 | * drm_atomic_async_commit - atomic&async configuration commit | |
1392 | * @state: atomic configuration to check | |
1393 | * | |
1394 | * Note that this function can return -EDEADLK if the driver needed to acquire | |
1395 | * more locks but encountered a deadlock. The caller must then do the usual w/w | |
1396 | * backoff dance and restart. All other errors are fatal. | |
1397 | * | |
1398 | * Also note that on successful execution ownership of @state is transferred | |
1399 | * from the caller of this function to the function itself. The caller must not | |
1400 | * free or in any other way access @state. If the function fails then the caller | |
1401 | * must clean up @state itself. | |
1402 | * | |
1403 | * Returns: | |
1404 | * 0 on success, negative error code on failure. | |
1405 | */ | |
1406 | int drm_atomic_async_commit(struct drm_atomic_state *state) | |
1407 | { | |
1408 | struct drm_mode_config *config = &state->dev->mode_config; | |
1409 | int ret; | |
1410 | ||
1411 | ret = drm_atomic_check_only(state); | |
1412 | if (ret) | |
1413 | return ret; | |
1414 | ||
1415 | DRM_DEBUG_ATOMIC("commiting %p asynchronously\n", state); | |
1416 | ||
1417 | return config->funcs->atomic_commit(state->dev, state, true); | |
1418 | } | |
1419 | EXPORT_SYMBOL(drm_atomic_async_commit); | |
1420 | ||
1421 | /* | |
1422 | * The big monstor ioctl | |
1423 | */ | |
1424 | ||
1425 | static struct drm_pending_vblank_event *create_vblank_event( | |
1426 | struct drm_device *dev, struct drm_file *file_priv, uint64_t user_data) | |
1427 | { | |
1428 | struct drm_pending_vblank_event *e = NULL; | |
1429 | int ret; | |
1430 | ||
1431 | e = kzalloc(sizeof *e, GFP_KERNEL); | |
1432 | if (!e) | |
1433 | return NULL; | |
1434 | ||
1435 | e->event.base.type = DRM_EVENT_FLIP_COMPLETE; | |
1436 | e->event.base.length = sizeof(e->event); | |
1437 | e->event.user_data = user_data; | |
1438 | ||
1439 | ret = drm_event_reserve_init(dev, file_priv, &e->base, &e->event.base); | |
1440 | if (ret) { | |
1441 | kfree(e); | |
1442 | return NULL; | |
1443 | } | |
1444 | ||
1445 | return e; | |
1446 | } | |
1447 | ||
1448 | static int atomic_set_prop(struct drm_atomic_state *state, | |
1449 | struct drm_mode_object *obj, struct drm_property *prop, | |
1450 | uint64_t prop_value) | |
1451 | { | |
1452 | struct drm_mode_object *ref; | |
1453 | int ret; | |
1454 | ||
1455 | if (!drm_property_change_valid_get(prop, prop_value, &ref)) | |
1456 | return -EINVAL; | |
1457 | ||
1458 | switch (obj->type) { | |
1459 | case DRM_MODE_OBJECT_CONNECTOR: { | |
1460 | struct drm_connector *connector = obj_to_connector(obj); | |
1461 | struct drm_connector_state *connector_state; | |
1462 | ||
1463 | connector_state = drm_atomic_get_connector_state(state, connector); | |
1464 | if (IS_ERR(connector_state)) { | |
1465 | ret = PTR_ERR(connector_state); | |
1466 | break; | |
1467 | } | |
1468 | ||
1469 | ret = drm_atomic_connector_set_property(connector, | |
1470 | connector_state, prop, prop_value); | |
1471 | break; | |
1472 | } | |
1473 | case DRM_MODE_OBJECT_CRTC: { | |
1474 | struct drm_crtc *crtc = obj_to_crtc(obj); | |
1475 | struct drm_crtc_state *crtc_state; | |
1476 | ||
1477 | crtc_state = drm_atomic_get_crtc_state(state, crtc); | |
1478 | if (IS_ERR(crtc_state)) { | |
1479 | ret = PTR_ERR(crtc_state); | |
1480 | break; | |
1481 | } | |
1482 | ||
1483 | ret = drm_atomic_crtc_set_property(crtc, | |
1484 | crtc_state, prop, prop_value); | |
1485 | break; | |
1486 | } | |
1487 | case DRM_MODE_OBJECT_PLANE: { | |
1488 | struct drm_plane *plane = obj_to_plane(obj); | |
1489 | struct drm_plane_state *plane_state; | |
1490 | ||
1491 | plane_state = drm_atomic_get_plane_state(state, plane); | |
1492 | if (IS_ERR(plane_state)) { | |
1493 | ret = PTR_ERR(plane_state); | |
1494 | break; | |
1495 | } | |
1496 | ||
1497 | ret = drm_atomic_plane_set_property(plane, | |
1498 | plane_state, prop, prop_value); | |
1499 | break; | |
1500 | } | |
1501 | default: | |
1502 | ret = -EINVAL; | |
1503 | break; | |
1504 | } | |
1505 | ||
1506 | drm_property_change_valid_put(prop, ref); | |
1507 | return ret; | |
1508 | } | |
1509 | ||
1510 | /** | |
1511 | * drm_atomic_clean_old_fb -- Unset old_fb pointers and set plane->fb pointers. | |
1512 | * | |
1513 | * @dev: drm device to check. | |
1514 | * @plane_mask: plane mask for planes that were updated. | |
1515 | * @ret: return value, can be -EDEADLK for a retry. | |
1516 | * | |
1517 | * Before doing an update plane->old_fb is set to plane->fb, | |
1518 | * but before dropping the locks old_fb needs to be set to NULL | |
1519 | * and plane->fb updated. This is a common operation for each | |
1520 | * atomic update, so this call is split off as a helper. | |
1521 | */ | |
1522 | void drm_atomic_clean_old_fb(struct drm_device *dev, | |
1523 | unsigned plane_mask, | |
1524 | int ret) | |
1525 | { | |
1526 | struct drm_plane *plane; | |
1527 | ||
1528 | /* if succeeded, fixup legacy plane crtc/fb ptrs before dropping | |
1529 | * locks (ie. while it is still safe to deref plane->state). We | |
1530 | * need to do this here because the driver entry points cannot | |
1531 | * distinguish between legacy and atomic ioctls. | |
1532 | */ | |
1533 | drm_for_each_plane_mask(plane, dev, plane_mask) { | |
1534 | if (ret == 0) { | |
1535 | struct drm_framebuffer *new_fb = plane->state->fb; | |
1536 | if (new_fb) | |
1537 | drm_framebuffer_reference(new_fb); | |
1538 | plane->fb = new_fb; | |
1539 | plane->crtc = plane->state->crtc; | |
1540 | ||
1541 | if (plane->old_fb) | |
1542 | drm_framebuffer_unreference(plane->old_fb); | |
1543 | } | |
1544 | plane->old_fb = NULL; | |
1545 | } | |
1546 | } | |
1547 | EXPORT_SYMBOL(drm_atomic_clean_old_fb); | |
1548 | ||
1549 | int drm_mode_atomic_ioctl(struct drm_device *dev, | |
1550 | void *data, struct drm_file *file_priv) | |
1551 | { | |
1552 | struct drm_mode_atomic *arg = data; | |
1553 | uint32_t __user *objs_ptr = (uint32_t __user *)(unsigned long)(arg->objs_ptr); | |
1554 | uint32_t __user *count_props_ptr = (uint32_t __user *)(unsigned long)(arg->count_props_ptr); | |
1555 | uint32_t __user *props_ptr = (uint32_t __user *)(unsigned long)(arg->props_ptr); | |
1556 | uint64_t __user *prop_values_ptr = (uint64_t __user *)(unsigned long)(arg->prop_values_ptr); | |
1557 | unsigned int copied_objs, copied_props; | |
1558 | struct drm_atomic_state *state; | |
1559 | struct drm_modeset_acquire_ctx ctx; | |
1560 | struct drm_plane *plane; | |
1561 | struct drm_crtc *crtc; | |
1562 | struct drm_crtc_state *crtc_state; | |
1563 | unsigned plane_mask; | |
1564 | int ret = 0; | |
1565 | unsigned int i, j; | |
1566 | ||
1567 | /* disallow for drivers not supporting atomic: */ | |
1568 | if (!drm_core_check_feature(dev, DRIVER_ATOMIC)) | |
1569 | return -EINVAL; | |
1570 | ||
1571 | /* disallow for userspace that has not enabled atomic cap (even | |
1572 | * though this may be a bit overkill, since legacy userspace | |
1573 | * wouldn't know how to call this ioctl) | |
1574 | */ | |
1575 | if (!file_priv->atomic) | |
1576 | return -EINVAL; | |
1577 | ||
1578 | if (arg->flags & ~DRM_MODE_ATOMIC_FLAGS) | |
1579 | return -EINVAL; | |
1580 | ||
1581 | if (arg->reserved) | |
1582 | return -EINVAL; | |
1583 | ||
1584 | if ((arg->flags & DRM_MODE_PAGE_FLIP_ASYNC) && | |
1585 | !dev->mode_config.async_page_flip) | |
1586 | return -EINVAL; | |
1587 | ||
1588 | /* can't test and expect an event at the same time. */ | |
1589 | if ((arg->flags & DRM_MODE_ATOMIC_TEST_ONLY) && | |
1590 | (arg->flags & DRM_MODE_PAGE_FLIP_EVENT)) | |
1591 | return -EINVAL; | |
1592 | ||
1593 | drm_modeset_acquire_init(&ctx, 0); | |
1594 | ||
1595 | state = drm_atomic_state_alloc(dev); | |
1596 | if (!state) | |
1597 | return -ENOMEM; | |
1598 | ||
1599 | state->acquire_ctx = &ctx; | |
1600 | state->allow_modeset = !!(arg->flags & DRM_MODE_ATOMIC_ALLOW_MODESET); | |
1601 | ||
1602 | retry: | |
1603 | plane_mask = 0; | |
1604 | copied_objs = 0; | |
1605 | copied_props = 0; | |
1606 | ||
1607 | for (i = 0; i < arg->count_objs; i++) { | |
1608 | uint32_t obj_id, count_props; | |
1609 | struct drm_mode_object *obj; | |
1610 | ||
1611 | if (get_user(obj_id, objs_ptr + copied_objs)) { | |
1612 | ret = -EFAULT; | |
1613 | goto out; | |
1614 | } | |
1615 | ||
1616 | obj = drm_mode_object_find(dev, obj_id, DRM_MODE_OBJECT_ANY); | |
1617 | if (!obj || !obj->properties) { | |
1618 | ret = -ENOENT; | |
1619 | goto out; | |
1620 | } | |
1621 | ||
1622 | if (get_user(count_props, count_props_ptr + copied_objs)) { | |
1623 | ret = -EFAULT; | |
1624 | goto out; | |
1625 | } | |
1626 | ||
1627 | copied_objs++; | |
1628 | ||
1629 | for (j = 0; j < count_props; j++) { | |
1630 | uint32_t prop_id; | |
1631 | uint64_t prop_value; | |
1632 | struct drm_property *prop; | |
1633 | ||
1634 | if (get_user(prop_id, props_ptr + copied_props)) { | |
1635 | ret = -EFAULT; | |
1636 | goto out; | |
1637 | } | |
1638 | ||
1639 | prop = drm_property_find(dev, prop_id); | |
1640 | if (!prop) { | |
1641 | ret = -ENOENT; | |
1642 | goto out; | |
1643 | } | |
1644 | ||
1645 | if (copy_from_user(&prop_value, | |
1646 | prop_values_ptr + copied_props, | |
1647 | sizeof(prop_value))) { | |
1648 | ret = -EFAULT; | |
1649 | goto out; | |
1650 | } | |
1651 | ||
1652 | ret = atomic_set_prop(state, obj, prop, prop_value); | |
1653 | if (ret) | |
1654 | goto out; | |
1655 | ||
1656 | copied_props++; | |
1657 | } | |
1658 | ||
1659 | if (obj->type == DRM_MODE_OBJECT_PLANE && count_props && | |
1660 | !(arg->flags & DRM_MODE_ATOMIC_TEST_ONLY)) { | |
1661 | plane = obj_to_plane(obj); | |
1662 | plane_mask |= (1 << drm_plane_index(plane)); | |
1663 | plane->old_fb = plane->fb; | |
1664 | } | |
1665 | } | |
1666 | ||
1667 | if (arg->flags & DRM_MODE_PAGE_FLIP_EVENT) { | |
1668 | for_each_crtc_in_state(state, crtc, crtc_state, i) { | |
1669 | struct drm_pending_vblank_event *e; | |
1670 | ||
1671 | e = create_vblank_event(dev, file_priv, arg->user_data); | |
1672 | if (!e) { | |
1673 | ret = -ENOMEM; | |
1674 | goto out; | |
1675 | } | |
1676 | ||
1677 | crtc_state->event = e; | |
1678 | } | |
1679 | } | |
1680 | ||
1681 | if (arg->flags & DRM_MODE_ATOMIC_TEST_ONLY) { | |
1682 | /* | |
1683 | * Unlike commit, check_only does not clean up state. | |
1684 | * Below we call drm_atomic_state_free for it. | |
1685 | */ | |
1686 | ret = drm_atomic_check_only(state); | |
1687 | } else if (arg->flags & DRM_MODE_ATOMIC_NONBLOCK) { | |
1688 | ret = drm_atomic_async_commit(state); | |
1689 | } else { | |
1690 | ret = drm_atomic_commit(state); | |
1691 | } | |
1692 | ||
1693 | out: | |
1694 | drm_atomic_clean_old_fb(dev, plane_mask, ret); | |
1695 | ||
1696 | if (ret && arg->flags & DRM_MODE_PAGE_FLIP_EVENT) { | |
1697 | /* | |
1698 | * TEST_ONLY and PAGE_FLIP_EVENT are mutually exclusive, | |
1699 | * if they weren't, this code should be called on success | |
1700 | * for TEST_ONLY too. | |
1701 | */ | |
1702 | ||
1703 | for_each_crtc_in_state(state, crtc, crtc_state, i) { | |
1704 | if (!crtc_state->event) | |
1705 | continue; | |
1706 | ||
1707 | drm_event_cancel_free(dev, &crtc_state->event->base); | |
1708 | } | |
1709 | } | |
1710 | ||
1711 | if (ret == -EDEADLK) { | |
1712 | drm_atomic_state_clear(state); | |
1713 | drm_modeset_backoff(&ctx); | |
1714 | goto retry; | |
1715 | } | |
1716 | ||
1717 | if (ret || arg->flags & DRM_MODE_ATOMIC_TEST_ONLY) | |
1718 | drm_atomic_state_free(state); | |
1719 | ||
1720 | drm_modeset_drop_locks(&ctx); | |
1721 | drm_modeset_acquire_fini(&ctx); | |
1722 | ||
1723 | return ret; | |
1724 | } |