Commit | Line | Data |
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cc4ceb48 DV |
1 | /* |
2 | * Copyright (C) 2014 Red Hat | |
3 | * Copyright (C) 2014 Intel Corp. | |
a4324a7a | 4 | * Copyright (c) 2020-2021, The Linux Foundation. All rights reserved. |
cc4ceb48 DV |
5 | * |
6 | * Permission is hereby granted, free of charge, to any person obtaining a | |
7 | * copy of this software and associated documentation files (the "Software"), | |
8 | * to deal in the Software without restriction, including without limitation | |
9 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
10 | * and/or sell copies of the Software, and to permit persons to whom the | |
11 | * Software is furnished to do so, subject to the following conditions: | |
12 | * | |
13 | * The above copyright notice and this permission notice shall be included in | |
14 | * all copies or substantial portions of the Software. | |
15 | * | |
16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
19 | * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR | |
20 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, | |
21 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR | |
22 | * OTHER DEALINGS IN THE SOFTWARE. | |
23 | * | |
24 | * Authors: | |
25 | * Rob Clark <robdclark@gmail.com> | |
26 | * Daniel Vetter <daniel.vetter@ffwll.ch> | |
27 | */ | |
28 | ||
29 | ||
0500c04e SR |
30 | #include <linux/sync_file.h> |
31 | ||
cc4ceb48 | 32 | #include <drm/drm_atomic.h> |
72fdb40c | 33 | #include <drm/drm_atomic_uapi.h> |
75146591 | 34 | #include <drm/drm_bridge.h> |
0500c04e SR |
35 | #include <drm/drm_debugfs.h> |
36 | #include <drm/drm_device.h> | |
37 | #include <drm/drm_drv.h> | |
38 | #include <drm/drm_file.h> | |
39 | #include <drm/drm_fourcc.h> | |
5488dc16 | 40 | #include <drm/drm_mode.h> |
fceffb32 | 41 | #include <drm/drm_print.h> |
935774cd | 42 | #include <drm/drm_writeback.h> |
cc4ceb48 | 43 | |
be35f94f | 44 | #include "drm_crtc_internal.h" |
f02b604b | 45 | #include "drm_internal.h" |
be35f94f | 46 | |
b3ba3f6f | 47 | void __drm_crtc_commit_free(struct kref *kref) |
3b24f7d6 DV |
48 | { |
49 | struct drm_crtc_commit *commit = | |
50 | container_of(kref, struct drm_crtc_commit, ref); | |
51 | ||
52 | kfree(commit); | |
53 | } | |
b3ba3f6f | 54 | EXPORT_SYMBOL(__drm_crtc_commit_free); |
3b24f7d6 | 55 | |
b99c2c95 MR |
56 | /** |
57 | * drm_crtc_commit_wait - Waits for a commit to complete | |
58 | * @commit: &drm_crtc_commit to wait for | |
59 | * | |
60 | * Waits for a given &drm_crtc_commit to be programmed into the | |
61 | * hardware and flipped to. | |
62 | * | |
63 | * Returns: | |
64 | * | |
65 | * 0 on success, a negative error code otherwise. | |
66 | */ | |
67 | int drm_crtc_commit_wait(struct drm_crtc_commit *commit) | |
68 | { | |
69 | unsigned long timeout = 10 * HZ; | |
70 | int ret; | |
71 | ||
72 | if (!commit) | |
73 | return 0; | |
74 | ||
75 | ret = wait_for_completion_timeout(&commit->hw_done, timeout); | |
76 | if (!ret) { | |
6e22dc35 | 77 | drm_err(commit->crtc->dev, "hw_done timed out\n"); |
b99c2c95 MR |
78 | return -ETIMEDOUT; |
79 | } | |
80 | ||
81 | /* | |
82 | * Currently no support for overwriting flips, hence | |
83 | * stall for previous one to execute completely. | |
84 | */ | |
85 | ret = wait_for_completion_timeout(&commit->flip_done, timeout); | |
86 | if (!ret) { | |
6e22dc35 | 87 | drm_err(commit->crtc->dev, "flip_done timed out\n"); |
b99c2c95 MR |
88 | return -ETIMEDOUT; |
89 | } | |
90 | ||
91 | return 0; | |
92 | } | |
93 | EXPORT_SYMBOL(drm_crtc_commit_wait); | |
94 | ||
036ef573 ML |
95 | /** |
96 | * drm_atomic_state_default_release - | |
97 | * release memory initialized by drm_atomic_state_init | |
98 | * @state: atomic state | |
99 | * | |
100 | * Free all the memory allocated by drm_atomic_state_init. | |
da6c0596 DV |
101 | * This should only be used by drivers which are still subclassing |
102 | * &drm_atomic_state and haven't switched to &drm_private_state yet. | |
036ef573 ML |
103 | */ |
104 | void drm_atomic_state_default_release(struct drm_atomic_state *state) | |
cc4ceb48 DV |
105 | { |
106 | kfree(state->connectors); | |
cc4ceb48 | 107 | kfree(state->crtcs); |
cc4ceb48 | 108 | kfree(state->planes); |
b430c27a | 109 | kfree(state->private_objs); |
cc4ceb48 | 110 | } |
036ef573 | 111 | EXPORT_SYMBOL(drm_atomic_state_default_release); |
cc4ceb48 DV |
112 | |
113 | /** | |
036ef573 | 114 | * drm_atomic_state_init - init new atomic state |
cc4ceb48 | 115 | * @dev: DRM device |
036ef573 | 116 | * @state: atomic state |
cc4ceb48 | 117 | * |
036ef573 | 118 | * Default implementation for filling in a new atomic state. |
da6c0596 DV |
119 | * This should only be used by drivers which are still subclassing |
120 | * &drm_atomic_state and haven't switched to &drm_private_state yet. | |
cc4ceb48 | 121 | */ |
036ef573 ML |
122 | int |
123 | drm_atomic_state_init(struct drm_device *dev, struct drm_atomic_state *state) | |
cc4ceb48 | 124 | { |
0853695c CW |
125 | kref_init(&state->ref); |
126 | ||
d34f20d6 RC |
127 | /* TODO legacy paths should maybe do a better job about |
128 | * setting this appropriately? | |
129 | */ | |
130 | state->allow_modeset = true; | |
131 | ||
cc4ceb48 DV |
132 | state->crtcs = kcalloc(dev->mode_config.num_crtc, |
133 | sizeof(*state->crtcs), GFP_KERNEL); | |
134 | if (!state->crtcs) | |
135 | goto fail; | |
cc4ceb48 DV |
136 | state->planes = kcalloc(dev->mode_config.num_total_plane, |
137 | sizeof(*state->planes), GFP_KERNEL); | |
138 | if (!state->planes) | |
139 | goto fail; | |
cc4ceb48 DV |
140 | |
141 | state->dev = dev; | |
142 | ||
6e22dc35 | 143 | drm_dbg_atomic(dev, "Allocated atomic state %p\n", state); |
cc4ceb48 | 144 | |
036ef573 | 145 | return 0; |
cc4ceb48 | 146 | fail: |
036ef573 ML |
147 | drm_atomic_state_default_release(state); |
148 | return -ENOMEM; | |
149 | } | |
150 | EXPORT_SYMBOL(drm_atomic_state_init); | |
151 | ||
152 | /** | |
153 | * drm_atomic_state_alloc - allocate atomic state | |
154 | * @dev: DRM device | |
155 | * | |
156 | * This allocates an empty atomic state to track updates. | |
157 | */ | |
158 | struct drm_atomic_state * | |
159 | drm_atomic_state_alloc(struct drm_device *dev) | |
160 | { | |
161 | struct drm_mode_config *config = &dev->mode_config; | |
036ef573 ML |
162 | |
163 | if (!config->funcs->atomic_state_alloc) { | |
ac7c7483 DK |
164 | struct drm_atomic_state *state; |
165 | ||
036ef573 ML |
166 | state = kzalloc(sizeof(*state), GFP_KERNEL); |
167 | if (!state) | |
168 | return NULL; | |
169 | if (drm_atomic_state_init(dev, state) < 0) { | |
170 | kfree(state); | |
171 | return NULL; | |
172 | } | |
173 | return state; | |
174 | } | |
cc4ceb48 | 175 | |
036ef573 | 176 | return config->funcs->atomic_state_alloc(dev); |
cc4ceb48 DV |
177 | } |
178 | EXPORT_SYMBOL(drm_atomic_state_alloc); | |
179 | ||
180 | /** | |
036ef573 | 181 | * drm_atomic_state_default_clear - clear base atomic state |
cc4ceb48 DV |
182 | * @state: atomic state |
183 | * | |
036ef573 | 184 | * Default implementation for clearing atomic state. |
da6c0596 DV |
185 | * This should only be used by drivers which are still subclassing |
186 | * &drm_atomic_state and haven't switched to &drm_private_state yet. | |
cc4ceb48 | 187 | */ |
036ef573 | 188 | void drm_atomic_state_default_clear(struct drm_atomic_state *state) |
cc4ceb48 DV |
189 | { |
190 | struct drm_device *dev = state->dev; | |
6f75cea6 | 191 | struct drm_mode_config *config = &dev->mode_config; |
cc4ceb48 DV |
192 | int i; |
193 | ||
6e22dc35 | 194 | drm_dbg_atomic(dev, "Clearing atomic state %p\n", state); |
cc4ceb48 | 195 | |
f52b69f1 | 196 | for (i = 0; i < state->num_connector; i++) { |
63e83c1d | 197 | struct drm_connector *connector = state->connectors[i].ptr; |
cc4ceb48 DV |
198 | |
199 | if (!connector) | |
200 | continue; | |
201 | ||
d2307dea | 202 | connector->funcs->atomic_destroy_state(connector, |
63e83c1d DV |
203 | state->connectors[i].state); |
204 | state->connectors[i].ptr = NULL; | |
205 | state->connectors[i].state = NULL; | |
f0b408ee VS |
206 | state->connectors[i].old_state = NULL; |
207 | state->connectors[i].new_state = NULL; | |
ad093607 | 208 | drm_connector_put(connector); |
cc4ceb48 DV |
209 | } |
210 | ||
6f75cea6 | 211 | for (i = 0; i < config->num_crtc; i++) { |
5d943aa6 | 212 | struct drm_crtc *crtc = state->crtcs[i].ptr; |
cc4ceb48 DV |
213 | |
214 | if (!crtc) | |
215 | continue; | |
216 | ||
217 | crtc->funcs->atomic_destroy_state(crtc, | |
5d943aa6 | 218 | state->crtcs[i].state); |
3b24f7d6 | 219 | |
5d943aa6 DV |
220 | state->crtcs[i].ptr = NULL; |
221 | state->crtcs[i].state = NULL; | |
f0b408ee VS |
222 | state->crtcs[i].old_state = NULL; |
223 | state->crtcs[i].new_state = NULL; | |
4364bcb2 LL |
224 | |
225 | if (state->crtcs[i].commit) { | |
226 | drm_crtc_commit_put(state->crtcs[i].commit); | |
227 | state->crtcs[i].commit = NULL; | |
228 | } | |
cc4ceb48 DV |
229 | } |
230 | ||
6f75cea6 | 231 | for (i = 0; i < config->num_total_plane; i++) { |
b8b5342b | 232 | struct drm_plane *plane = state->planes[i].ptr; |
cc4ceb48 DV |
233 | |
234 | if (!plane) | |
235 | continue; | |
236 | ||
237 | plane->funcs->atomic_destroy_state(plane, | |
b8b5342b DV |
238 | state->planes[i].state); |
239 | state->planes[i].ptr = NULL; | |
240 | state->planes[i].state = NULL; | |
f0b408ee VS |
241 | state->planes[i].old_state = NULL; |
242 | state->planes[i].new_state = NULL; | |
cc4ceb48 | 243 | } |
b430c27a PD |
244 | |
245 | for (i = 0; i < state->num_private_objs; i++) { | |
a4370c77 | 246 | struct drm_private_obj *obj = state->private_objs[i].ptr; |
b430c27a | 247 | |
a4370c77 VS |
248 | obj->funcs->atomic_destroy_state(obj, |
249 | state->private_objs[i].state); | |
250 | state->private_objs[i].ptr = NULL; | |
251 | state->private_objs[i].state = NULL; | |
b5cb2e5a VS |
252 | state->private_objs[i].old_state = NULL; |
253 | state->private_objs[i].new_state = NULL; | |
b430c27a PD |
254 | } |
255 | state->num_private_objs = 0; | |
256 | ||
21a01abb ML |
257 | if (state->fake_commit) { |
258 | drm_crtc_commit_put(state->fake_commit); | |
259 | state->fake_commit = NULL; | |
260 | } | |
cc4ceb48 | 261 | } |
036ef573 ML |
262 | EXPORT_SYMBOL(drm_atomic_state_default_clear); |
263 | ||
264 | /** | |
265 | * drm_atomic_state_clear - clear state object | |
266 | * @state: atomic state | |
267 | * | |
268 | * When the w/w mutex algorithm detects a deadlock we need to back off and drop | |
269 | * all locks. So someone else could sneak in and change the current modeset | |
270 | * configuration. Which means that all the state assembled in @state is no | |
271 | * longer an atomic update to the current state, but to some arbitrary earlier | |
d574528a DV |
272 | * state. Which could break assumptions the driver's |
273 | * &drm_mode_config_funcs.atomic_check likely relies on. | |
036ef573 ML |
274 | * |
275 | * Hence we must clear all cached state and completely start over, using this | |
276 | * function. | |
277 | */ | |
278 | void drm_atomic_state_clear(struct drm_atomic_state *state) | |
279 | { | |
280 | struct drm_device *dev = state->dev; | |
281 | struct drm_mode_config *config = &dev->mode_config; | |
282 | ||
283 | if (config->funcs->atomic_state_clear) | |
284 | config->funcs->atomic_state_clear(state); | |
285 | else | |
286 | drm_atomic_state_default_clear(state); | |
287 | } | |
cc4ceb48 DV |
288 | EXPORT_SYMBOL(drm_atomic_state_clear); |
289 | ||
290 | /** | |
0853695c CW |
291 | * __drm_atomic_state_free - free all memory for an atomic state |
292 | * @ref: This atomic state to deallocate | |
cc4ceb48 DV |
293 | * |
294 | * This frees all memory associated with an atomic state, including all the | |
42240c90 | 295 | * per-object state for planes, CRTCs and connectors. |
cc4ceb48 | 296 | */ |
0853695c | 297 | void __drm_atomic_state_free(struct kref *ref) |
cc4ceb48 | 298 | { |
0853695c CW |
299 | struct drm_atomic_state *state = container_of(ref, typeof(*state), ref); |
300 | struct drm_mode_config *config = &state->dev->mode_config; | |
036ef573 | 301 | |
cc4ceb48 DV |
302 | drm_atomic_state_clear(state); |
303 | ||
6e22dc35 | 304 | drm_dbg_atomic(state->dev, "Freeing atomic state %p\n", state); |
cc4ceb48 | 305 | |
036ef573 ML |
306 | if (config->funcs->atomic_state_free) { |
307 | config->funcs->atomic_state_free(state); | |
308 | } else { | |
309 | drm_atomic_state_default_release(state); | |
310 | kfree(state); | |
311 | } | |
cc4ceb48 | 312 | } |
0853695c | 313 | EXPORT_SYMBOL(__drm_atomic_state_free); |
cc4ceb48 DV |
314 | |
315 | /** | |
42240c90 | 316 | * drm_atomic_get_crtc_state - get CRTC state |
cc4ceb48 | 317 | * @state: global atomic state object |
42240c90 | 318 | * @crtc: CRTC to get state object for |
cc4ceb48 | 319 | * |
42240c90 TR |
320 | * This function returns the CRTC state for the given CRTC, allocating it if |
321 | * needed. It will also grab the relevant CRTC lock to make sure that the state | |
cc4ceb48 DV |
322 | * is consistent. |
323 | * | |
fb6473a4 DV |
324 | * WARNING: Drivers may only add new CRTC states to a @state if |
325 | * drm_atomic_state.allow_modeset is set, or if it's a driver-internal commit | |
326 | * not created by userspace through an IOCTL call. | |
327 | * | |
cc4ceb48 DV |
328 | * Returns: |
329 | * | |
330 | * Either the allocated state or the error code encoded into the pointer. When | |
331 | * the error is EDEADLK then the w/w mutex code has detected a deadlock and the | |
332 | * entire atomic sequence must be restarted. All other errors are fatal. | |
333 | */ | |
334 | struct drm_crtc_state * | |
335 | drm_atomic_get_crtc_state(struct drm_atomic_state *state, | |
336 | struct drm_crtc *crtc) | |
337 | { | |
1b26a5e1 | 338 | int ret, index = drm_crtc_index(crtc); |
cc4ceb48 DV |
339 | struct drm_crtc_state *crtc_state; |
340 | ||
7f4eaa89 ML |
341 | WARN_ON(!state->acquire_ctx); |
342 | ||
1b26a5e1 ML |
343 | crtc_state = drm_atomic_get_existing_crtc_state(state, crtc); |
344 | if (crtc_state) | |
345 | return crtc_state; | |
cc4ceb48 DV |
346 | |
347 | ret = drm_modeset_lock(&crtc->mutex, state->acquire_ctx); | |
348 | if (ret) | |
349 | return ERR_PTR(ret); | |
350 | ||
351 | crtc_state = crtc->funcs->atomic_duplicate_state(crtc); | |
352 | if (!crtc_state) | |
353 | return ERR_PTR(-ENOMEM); | |
354 | ||
5d943aa6 | 355 | state->crtcs[index].state = crtc_state; |
581e49fe ML |
356 | state->crtcs[index].old_state = crtc->state; |
357 | state->crtcs[index].new_state = crtc_state; | |
5d943aa6 | 358 | state->crtcs[index].ptr = crtc; |
cc4ceb48 DV |
359 | crtc_state->state = state; |
360 | ||
6e22dc35 CS |
361 | drm_dbg_atomic(state->dev, "Added [CRTC:%d:%s] %p state to %p\n", |
362 | crtc->base.id, crtc->name, crtc_state, state); | |
cc4ceb48 DV |
363 | |
364 | return crtc_state; | |
365 | } | |
366 | EXPORT_SYMBOL(drm_atomic_get_crtc_state); | |
367 | ||
b2432adf VS |
368 | static int drm_atomic_crtc_check(const struct drm_crtc_state *old_crtc_state, |
369 | const struct drm_crtc_state *new_crtc_state) | |
5e743737 | 370 | { |
b2432adf VS |
371 | struct drm_crtc *crtc = new_crtc_state->crtc; |
372 | ||
5e743737 RC |
373 | /* NOTE: we explicitly don't enforce constraints such as primary |
374 | * layer covering entire screen, since that is something we want | |
375 | * to allow (on hw that supports it). For hw that does not, it | |
376 | * should be checked in driver's crtc->atomic_check() vfunc. | |
377 | * | |
378 | * TODO: Add generic modeset state checks once we support those. | |
379 | */ | |
eab3bbef | 380 | |
b2432adf | 381 | if (new_crtc_state->active && !new_crtc_state->enable) { |
6e22dc35 CS |
382 | drm_dbg_atomic(crtc->dev, |
383 | "[CRTC:%d:%s] active without enabled\n", | |
384 | crtc->base.id, crtc->name); | |
eab3bbef DV |
385 | return -EINVAL; |
386 | } | |
387 | ||
99cf4a29 DS |
388 | /* The state->enable vs. state->mode_blob checks can be WARN_ON, |
389 | * as this is a kernel-internal detail that userspace should never | |
060726c5 BMC |
390 | * be able to trigger. |
391 | */ | |
99cf4a29 | 392 | if (drm_core_check_feature(crtc->dev, DRIVER_ATOMIC) && |
b2432adf | 393 | WARN_ON(new_crtc_state->enable && !new_crtc_state->mode_blob)) { |
6e22dc35 CS |
394 | drm_dbg_atomic(crtc->dev, |
395 | "[CRTC:%d:%s] enabled without mode blob\n", | |
396 | crtc->base.id, crtc->name); | |
99cf4a29 DS |
397 | return -EINVAL; |
398 | } | |
399 | ||
400 | if (drm_core_check_feature(crtc->dev, DRIVER_ATOMIC) && | |
b2432adf | 401 | WARN_ON(!new_crtc_state->enable && new_crtc_state->mode_blob)) { |
6e22dc35 CS |
402 | drm_dbg_atomic(crtc->dev, |
403 | "[CRTC:%d:%s] disabled with mode blob\n", | |
404 | crtc->base.id, crtc->name); | |
99cf4a29 DS |
405 | return -EINVAL; |
406 | } | |
407 | ||
4cba6850 DV |
408 | /* |
409 | * Reject event generation for when a CRTC is off and stays off. | |
410 | * It wouldn't be hard to implement this, but userspace has a track | |
411 | * record of happily burning through 100% cpu (or worse, crash) when the | |
412 | * display pipe is suspended. To avoid all that fun just reject updates | |
413 | * that ask for events since likely that indicates a bug in the | |
414 | * compositor's drawing loop. This is consistent with the vblank IOCTL | |
415 | * and legacy page_flip IOCTL which also reject service on a disabled | |
416 | * pipe. | |
417 | */ | |
b2432adf VS |
418 | if (new_crtc_state->event && |
419 | !new_crtc_state->active && !old_crtc_state->active) { | |
6e22dc35 CS |
420 | drm_dbg_atomic(crtc->dev, |
421 | "[CRTC:%d:%s] requesting event but off\n", | |
422 | crtc->base.id, crtc->name); | |
4cba6850 DV |
423 | return -EINVAL; |
424 | } | |
425 | ||
5e743737 RC |
426 | return 0; |
427 | } | |
428 | ||
fceffb32 RC |
429 | static void drm_atomic_crtc_print_state(struct drm_printer *p, |
430 | const struct drm_crtc_state *state) | |
431 | { | |
432 | struct drm_crtc *crtc = state->crtc; | |
433 | ||
434 | drm_printf(p, "crtc[%u]: %s\n", crtc->base.id, crtc->name); | |
435 | drm_printf(p, "\tenable=%d\n", state->enable); | |
436 | drm_printf(p, "\tactive=%d\n", state->active); | |
1452c25b | 437 | drm_printf(p, "\tself_refresh_active=%d\n", state->self_refresh_active); |
fceffb32 RC |
438 | drm_printf(p, "\tplanes_changed=%d\n", state->planes_changed); |
439 | drm_printf(p, "\tmode_changed=%d\n", state->mode_changed); | |
440 | drm_printf(p, "\tactive_changed=%d\n", state->active_changed); | |
441 | drm_printf(p, "\tconnectors_changed=%d\n", state->connectors_changed); | |
442 | drm_printf(p, "\tcolor_mgmt_changed=%d\n", state->color_mgmt_changed); | |
443 | drm_printf(p, "\tplane_mask=%x\n", state->plane_mask); | |
444 | drm_printf(p, "\tconnector_mask=%x\n", state->connector_mask); | |
445 | drm_printf(p, "\tencoder_mask=%x\n", state->encoder_mask); | |
446 | drm_printf(p, "\tmode: " DRM_MODE_FMT "\n", DRM_MODE_ARG(&state->mode)); | |
447 | ||
448 | if (crtc->funcs->atomic_print_state) | |
449 | crtc->funcs->atomic_print_state(p, state); | |
450 | } | |
451 | ||
935774cd BS |
452 | static int drm_atomic_connector_check(struct drm_connector *connector, |
453 | struct drm_connector_state *state) | |
454 | { | |
455 | struct drm_crtc_state *crtc_state; | |
456 | struct drm_writeback_job *writeback_job = state->writeback_job; | |
47e22ff1 RS |
457 | const struct drm_display_info *info = &connector->display_info; |
458 | ||
459 | state->max_bpc = info->bpc ? info->bpc : 8; | |
460 | if (connector->max_bpc_property) | |
461 | state->max_bpc = min(state->max_bpc, state->max_requested_bpc); | |
935774cd BS |
462 | |
463 | if ((connector->connector_type != DRM_MODE_CONNECTOR_WRITEBACK) || !writeback_job) | |
464 | return 0; | |
465 | ||
466 | if (writeback_job->fb && !state->crtc) { | |
6e22dc35 CS |
467 | drm_dbg_atomic(connector->dev, |
468 | "[CONNECTOR:%d:%s] framebuffer without CRTC\n", | |
469 | connector->base.id, connector->name); | |
935774cd BS |
470 | return -EINVAL; |
471 | } | |
472 | ||
473 | if (state->crtc) | |
474 | crtc_state = drm_atomic_get_existing_crtc_state(state->state, | |
475 | state->crtc); | |
476 | ||
477 | if (writeback_job->fb && !crtc_state->active) { | |
6e22dc35 CS |
478 | drm_dbg_atomic(connector->dev, |
479 | "[CONNECTOR:%d:%s] has framebuffer, but [CRTC:%d] is off\n", | |
480 | connector->base.id, connector->name, | |
481 | state->crtc->base.id); | |
935774cd BS |
482 | return -EINVAL; |
483 | } | |
484 | ||
8581d510 LLATC |
485 | if (!writeback_job->fb) { |
486 | if (writeback_job->out_fence) { | |
6e22dc35 CS |
487 | drm_dbg_atomic(connector->dev, |
488 | "[CONNECTOR:%d:%s] requesting out-fence without framebuffer\n", | |
489 | connector->base.id, connector->name); | |
8581d510 LLATC |
490 | return -EINVAL; |
491 | } | |
492 | ||
493 | drm_writeback_cleanup_job(writeback_job); | |
494 | state->writeback_job = NULL; | |
b13cc8dd BS |
495 | } |
496 | ||
935774cd BS |
497 | return 0; |
498 | } | |
499 | ||
cc4ceb48 DV |
500 | /** |
501 | * drm_atomic_get_plane_state - get plane state | |
502 | * @state: global atomic state object | |
503 | * @plane: plane to get state object for | |
504 | * | |
505 | * This function returns the plane state for the given plane, allocating it if | |
506 | * needed. It will also grab the relevant plane lock to make sure that the state | |
507 | * is consistent. | |
508 | * | |
509 | * Returns: | |
510 | * | |
511 | * Either the allocated state or the error code encoded into the pointer. When | |
512 | * the error is EDEADLK then the w/w mutex code has detected a deadlock and the | |
513 | * entire atomic sequence must be restarted. All other errors are fatal. | |
514 | */ | |
515 | struct drm_plane_state * | |
516 | drm_atomic_get_plane_state(struct drm_atomic_state *state, | |
517 | struct drm_plane *plane) | |
518 | { | |
1b26a5e1 | 519 | int ret, index = drm_plane_index(plane); |
cc4ceb48 DV |
520 | struct drm_plane_state *plane_state; |
521 | ||
7f4eaa89 ML |
522 | WARN_ON(!state->acquire_ctx); |
523 | ||
e00fb856 VS |
524 | /* the legacy pointers should never be set */ |
525 | WARN_ON(plane->fb); | |
526 | WARN_ON(plane->old_fb); | |
527 | WARN_ON(plane->crtc); | |
528 | ||
1b26a5e1 ML |
529 | plane_state = drm_atomic_get_existing_plane_state(state, plane); |
530 | if (plane_state) | |
531 | return plane_state; | |
cc4ceb48 | 532 | |
4d02e2de | 533 | ret = drm_modeset_lock(&plane->mutex, state->acquire_ctx); |
cc4ceb48 DV |
534 | if (ret) |
535 | return ERR_PTR(ret); | |
536 | ||
537 | plane_state = plane->funcs->atomic_duplicate_state(plane); | |
538 | if (!plane_state) | |
539 | return ERR_PTR(-ENOMEM); | |
540 | ||
b8b5342b DV |
541 | state->planes[index].state = plane_state; |
542 | state->planes[index].ptr = plane; | |
581e49fe ML |
543 | state->planes[index].old_state = plane->state; |
544 | state->planes[index].new_state = plane_state; | |
cc4ceb48 DV |
545 | plane_state->state = state; |
546 | ||
6e22dc35 CS |
547 | drm_dbg_atomic(plane->dev, "Added [PLANE:%d:%s] %p state to %p\n", |
548 | plane->base.id, plane->name, plane_state, state); | |
cc4ceb48 DV |
549 | |
550 | if (plane_state->crtc) { | |
551 | struct drm_crtc_state *crtc_state; | |
552 | ||
553 | crtc_state = drm_atomic_get_crtc_state(state, | |
554 | plane_state->crtc); | |
555 | if (IS_ERR(crtc_state)) | |
556 | return ERR_CAST(crtc_state); | |
557 | } | |
558 | ||
559 | return plane_state; | |
560 | } | |
561 | EXPORT_SYMBOL(drm_atomic_get_plane_state); | |
562 | ||
f8aeb41c | 563 | static bool |
d9be05b7 VS |
564 | plane_switching_crtc(const struct drm_plane_state *old_plane_state, |
565 | const struct drm_plane_state *new_plane_state) | |
f8aeb41c | 566 | { |
d9be05b7 | 567 | if (!old_plane_state->crtc || !new_plane_state->crtc) |
f8aeb41c DV |
568 | return false; |
569 | ||
d9be05b7 | 570 | if (old_plane_state->crtc == new_plane_state->crtc) |
f8aeb41c DV |
571 | return false; |
572 | ||
573 | /* This could be refined, but currently there's no helper or driver code | |
574 | * to implement direct switching of active planes nor userspace to take | |
575 | * advantage of more direct plane switching without the intermediate | |
576 | * full OFF state. | |
577 | */ | |
578 | return true; | |
579 | } | |
580 | ||
5e743737 RC |
581 | /** |
582 | * drm_atomic_plane_check - check plane state | |
d9be05b7 VS |
583 | * @old_plane_state: old plane state to check |
584 | * @new_plane_state: new plane state to check | |
5e743737 RC |
585 | * |
586 | * Provides core sanity checks for plane state. | |
587 | * | |
588 | * RETURNS: | |
589 | * Zero on success, error code on failure | |
590 | */ | |
d9be05b7 VS |
591 | static int drm_atomic_plane_check(const struct drm_plane_state *old_plane_state, |
592 | const struct drm_plane_state *new_plane_state) | |
5e743737 | 593 | { |
d9be05b7 VS |
594 | struct drm_plane *plane = new_plane_state->plane; |
595 | struct drm_crtc *crtc = new_plane_state->crtc; | |
596 | const struct drm_framebuffer *fb = new_plane_state->fb; | |
5e743737 | 597 | unsigned int fb_width, fb_height; |
d3b21767 LS |
598 | struct drm_mode_rect *clips; |
599 | uint32_t num_clips; | |
ead8610d | 600 | int ret; |
5e743737 RC |
601 | |
602 | /* either *both* CRTC and FB must be set, or neither */ | |
d9be05b7 | 603 | if (crtc && !fb) { |
6e22dc35 CS |
604 | drm_dbg_atomic(plane->dev, "[PLANE:%d:%s] CRTC set but no FB\n", |
605 | plane->base.id, plane->name); | |
5e743737 | 606 | return -EINVAL; |
d9be05b7 | 607 | } else if (fb && !crtc) { |
6e22dc35 CS |
608 | drm_dbg_atomic(plane->dev, "[PLANE:%d:%s] FB set but no CRTC\n", |
609 | plane->base.id, plane->name); | |
5e743737 RC |
610 | return -EINVAL; |
611 | } | |
612 | ||
613 | /* if disabled, we don't care about the rest of the state: */ | |
d9be05b7 | 614 | if (!crtc) |
5e743737 RC |
615 | return 0; |
616 | ||
617 | /* Check whether this plane is usable on this CRTC */ | |
d9be05b7 | 618 | if (!(plane->possible_crtcs & drm_crtc_mask(crtc))) { |
6e22dc35 CS |
619 | drm_dbg_atomic(plane->dev, |
620 | "Invalid [CRTC:%d:%s] for [PLANE:%d:%s]\n", | |
621 | crtc->base.id, crtc->name, | |
622 | plane->base.id, plane->name); | |
5e743737 RC |
623 | return -EINVAL; |
624 | } | |
625 | ||
626 | /* Check whether this plane supports the fb pixel format. */ | |
d9be05b7 VS |
627 | ret = drm_plane_check_pixel_format(plane, fb->format->format, |
628 | fb->modifier); | |
ead8610d | 629 | if (ret) { |
6e22dc35 CS |
630 | drm_dbg_atomic(plane->dev, |
631 | "[PLANE:%d:%s] invalid pixel format %p4cc, modifier 0x%llx\n", | |
632 | plane->base.id, plane->name, | |
633 | &fb->format->format, fb->modifier); | |
ead8610d | 634 | return ret; |
5e743737 RC |
635 | } |
636 | ||
637 | /* Give drivers some help against integer overflows */ | |
d9be05b7 VS |
638 | if (new_plane_state->crtc_w > INT_MAX || |
639 | new_plane_state->crtc_x > INT_MAX - (int32_t) new_plane_state->crtc_w || | |
640 | new_plane_state->crtc_h > INT_MAX || | |
641 | new_plane_state->crtc_y > INT_MAX - (int32_t) new_plane_state->crtc_h) { | |
6e22dc35 CS |
642 | drm_dbg_atomic(plane->dev, |
643 | "[PLANE:%d:%s] invalid CRTC coordinates %ux%u+%d+%d\n", | |
644 | plane->base.id, plane->name, | |
645 | new_plane_state->crtc_w, new_plane_state->crtc_h, | |
646 | new_plane_state->crtc_x, new_plane_state->crtc_y); | |
5e743737 RC |
647 | return -ERANGE; |
648 | } | |
649 | ||
d9be05b7 VS |
650 | fb_width = fb->width << 16; |
651 | fb_height = fb->height << 16; | |
5e743737 RC |
652 | |
653 | /* Make sure source coordinates are inside the fb. */ | |
d9be05b7 VS |
654 | if (new_plane_state->src_w > fb_width || |
655 | new_plane_state->src_x > fb_width - new_plane_state->src_w || | |
656 | new_plane_state->src_h > fb_height || | |
657 | new_plane_state->src_y > fb_height - new_plane_state->src_h) { | |
6e22dc35 CS |
658 | drm_dbg_atomic(plane->dev, |
659 | "[PLANE:%d:%s] invalid source coordinates " | |
660 | "%u.%06ux%u.%06u+%u.%06u+%u.%06u (fb %ux%u)\n", | |
661 | plane->base.id, plane->name, | |
662 | new_plane_state->src_w >> 16, | |
663 | ((new_plane_state->src_w & 0xffff) * 15625) >> 10, | |
664 | new_plane_state->src_h >> 16, | |
665 | ((new_plane_state->src_h & 0xffff) * 15625) >> 10, | |
666 | new_plane_state->src_x >> 16, | |
667 | ((new_plane_state->src_x & 0xffff) * 15625) >> 10, | |
668 | new_plane_state->src_y >> 16, | |
669 | ((new_plane_state->src_y & 0xffff) * 15625) >> 10, | |
670 | fb->width, fb->height); | |
5e743737 RC |
671 | return -ENOSPC; |
672 | } | |
673 | ||
c7fcbf25 | 674 | clips = __drm_plane_get_damage_clips(new_plane_state); |
d3b21767 LS |
675 | num_clips = drm_plane_get_damage_clips_count(new_plane_state); |
676 | ||
677 | /* Make sure damage clips are valid and inside the fb. */ | |
678 | while (num_clips > 0) { | |
679 | if (clips->x1 >= clips->x2 || | |
680 | clips->y1 >= clips->y2 || | |
681 | clips->x1 < 0 || | |
682 | clips->y1 < 0 || | |
683 | clips->x2 > fb_width || | |
684 | clips->y2 > fb_height) { | |
6e22dc35 CS |
685 | drm_dbg_atomic(plane->dev, |
686 | "[PLANE:%d:%s] invalid damage clip %d %d %d %d\n", | |
687 | plane->base.id, plane->name, clips->x1, | |
688 | clips->y1, clips->x2, clips->y2); | |
d3b21767 LS |
689 | return -EINVAL; |
690 | } | |
691 | clips++; | |
692 | num_clips--; | |
693 | } | |
694 | ||
d9be05b7 | 695 | if (plane_switching_crtc(old_plane_state, new_plane_state)) { |
6e22dc35 CS |
696 | drm_dbg_atomic(plane->dev, |
697 | "[PLANE:%d:%s] switching CRTC directly\n", | |
698 | plane->base.id, plane->name); | |
f8aeb41c DV |
699 | return -EINVAL; |
700 | } | |
701 | ||
5e743737 RC |
702 | return 0; |
703 | } | |
704 | ||
fceffb32 RC |
705 | static void drm_atomic_plane_print_state(struct drm_printer *p, |
706 | const struct drm_plane_state *state) | |
707 | { | |
708 | struct drm_plane *plane = state->plane; | |
709 | struct drm_rect src = drm_plane_state_src(state); | |
710 | struct drm_rect dest = drm_plane_state_dest(state); | |
711 | ||
712 | drm_printf(p, "plane[%u]: %s\n", plane->base.id, plane->name); | |
713 | drm_printf(p, "\tcrtc=%s\n", state->crtc ? state->crtc->name : "(null)"); | |
714 | drm_printf(p, "\tfb=%u\n", state->fb ? state->fb->base.id : 0); | |
f02b604b NT |
715 | if (state->fb) |
716 | drm_framebuffer_print_info(p, 2, state->fb); | |
fceffb32 RC |
717 | drm_printf(p, "\tcrtc-pos=" DRM_RECT_FMT "\n", DRM_RECT_ARG(&dest)); |
718 | drm_printf(p, "\tsrc-pos=" DRM_RECT_FP_FMT "\n", DRM_RECT_FP_ARG(&src)); | |
719 | drm_printf(p, "\trotation=%x\n", state->rotation); | |
f8878bb2 | 720 | drm_printf(p, "\tnormalized-zpos=%x\n", state->normalized_zpos); |
56dbbaff VS |
721 | drm_printf(p, "\tcolor-encoding=%s\n", |
722 | drm_get_color_encoding_name(state->color_encoding)); | |
723 | drm_printf(p, "\tcolor-range=%s\n", | |
724 | drm_get_color_range_name(state->color_range)); | |
fceffb32 RC |
725 | |
726 | if (plane->funcs->atomic_print_state) | |
727 | plane->funcs->atomic_print_state(p, state); | |
728 | } | |
729 | ||
da6c0596 DV |
730 | /** |
731 | * DOC: handling driver private state | |
732 | * | |
733 | * Very often the DRM objects exposed to userspace in the atomic modeset api | |
734 | * (&drm_connector, &drm_crtc and &drm_plane) do not map neatly to the | |
735 | * underlying hardware. Especially for any kind of shared resources (e.g. shared | |
736 | * clocks, scaler units, bandwidth and fifo limits shared among a group of | |
737 | * planes or CRTCs, and so on) it makes sense to model these as independent | |
738 | * objects. Drivers then need to do similar state tracking and commit ordering for | |
0ae865ef | 739 | * such private (since not exposed to userspace) objects as the atomic core and |
da6c0596 DV |
740 | * helpers already provide for connectors, planes and CRTCs. |
741 | * | |
742 | * To make this easier on drivers the atomic core provides some support to track | |
743 | * driver private state objects using struct &drm_private_obj, with the | |
744 | * associated state struct &drm_private_state. | |
745 | * | |
746 | * Similar to userspace-exposed objects, private state structures can be | |
0380c684 DV |
747 | * acquired by calling drm_atomic_get_private_obj_state(). This also takes care |
748 | * of locking, hence drivers should not have a need to call drm_modeset_lock() | |
749 | * directly. Sequence of the actual hardware state commit is not handled, | |
750 | * drivers might need to keep track of struct drm_crtc_commit within subclassed | |
751 | * structure of &drm_private_state as necessary, e.g. similar to | |
752 | * &drm_plane_state.commit. See also &drm_atomic_state.fake_commit. | |
da6c0596 DV |
753 | * |
754 | * All private state structures contained in a &drm_atomic_state update can be | |
755 | * iterated using for_each_oldnew_private_obj_in_state(), | |
756 | * for_each_new_private_obj_in_state() and for_each_old_private_obj_in_state(). | |
757 | * Drivers are recommended to wrap these for each type of driver private state | |
758 | * object they have, filtering on &drm_private_obj.funcs using for_each_if(), at | |
759 | * least if they want to iterate over all objects of a given type. | |
760 | * | |
761 | * An earlier way to handle driver private state was by subclassing struct | |
762 | * &drm_atomic_state. But since that encourages non-standard ways to implement | |
763 | * the check/commit split atomic requires (by using e.g. "check and rollback or | |
764 | * commit instead" of "duplicate state, check, then either commit or release | |
765 | * duplicated state) it is deprecated in favour of using &drm_private_state. | |
766 | */ | |
767 | ||
a4370c77 VS |
768 | /** |
769 | * drm_atomic_private_obj_init - initialize private object | |
b962a120 | 770 | * @dev: DRM device this object will be attached to |
a4370c77 VS |
771 | * @obj: private object |
772 | * @state: initial private object state | |
773 | * @funcs: pointer to the struct of function pointers that identify the object | |
774 | * type | |
775 | * | |
776 | * Initialize the private object, which can be embedded into any | |
777 | * driver private object that needs its own atomic state. | |
778 | */ | |
779 | void | |
b962a120 RC |
780 | drm_atomic_private_obj_init(struct drm_device *dev, |
781 | struct drm_private_obj *obj, | |
a4370c77 VS |
782 | struct drm_private_state *state, |
783 | const struct drm_private_state_funcs *funcs) | |
784 | { | |
785 | memset(obj, 0, sizeof(*obj)); | |
786 | ||
b962a120 RC |
787 | drm_modeset_lock_init(&obj->lock); |
788 | ||
a4370c77 VS |
789 | obj->state = state; |
790 | obj->funcs = funcs; | |
b962a120 | 791 | list_add_tail(&obj->head, &dev->mode_config.privobj_list); |
97a1f01b MR |
792 | |
793 | state->obj = obj; | |
a4370c77 VS |
794 | } |
795 | EXPORT_SYMBOL(drm_atomic_private_obj_init); | |
796 | ||
797 | /** | |
798 | * drm_atomic_private_obj_fini - finalize private object | |
799 | * @obj: private object | |
800 | * | |
801 | * Finalize the private object. | |
802 | */ | |
803 | void | |
804 | drm_atomic_private_obj_fini(struct drm_private_obj *obj) | |
805 | { | |
b962a120 | 806 | list_del(&obj->head); |
a4370c77 | 807 | obj->funcs->atomic_destroy_state(obj, obj->state); |
b962a120 | 808 | drm_modeset_lock_fini(&obj->lock); |
a4370c77 VS |
809 | } |
810 | EXPORT_SYMBOL(drm_atomic_private_obj_fini); | |
811 | ||
b430c27a PD |
812 | /** |
813 | * drm_atomic_get_private_obj_state - get private object state | |
814 | * @state: global atomic state | |
815 | * @obj: private object to get the state for | |
b430c27a PD |
816 | * |
817 | * This function returns the private object state for the given private object, | |
b962a120 RC |
818 | * allocating the state if needed. It will also grab the relevant private |
819 | * object lock to make sure that the state is consistent. | |
b430c27a PD |
820 | * |
821 | * RETURNS: | |
822 | * | |
823 | * Either the allocated state or the error code encoded into a pointer. | |
824 | */ | |
a4370c77 VS |
825 | struct drm_private_state * |
826 | drm_atomic_get_private_obj_state(struct drm_atomic_state *state, | |
827 | struct drm_private_obj *obj) | |
b430c27a | 828 | { |
b962a120 | 829 | int index, num_objs, i, ret; |
b430c27a PD |
830 | size_t size; |
831 | struct __drm_private_objs_state *arr; | |
a4370c77 | 832 | struct drm_private_state *obj_state; |
b430c27a PD |
833 | |
834 | for (i = 0; i < state->num_private_objs; i++) | |
a4370c77 VS |
835 | if (obj == state->private_objs[i].ptr) |
836 | return state->private_objs[i].state; | |
b430c27a | 837 | |
b962a120 RC |
838 | ret = drm_modeset_lock(&obj->lock, state->acquire_ctx); |
839 | if (ret) | |
840 | return ERR_PTR(ret); | |
841 | ||
b430c27a PD |
842 | num_objs = state->num_private_objs + 1; |
843 | size = sizeof(*state->private_objs) * num_objs; | |
844 | arr = krealloc(state->private_objs, size, GFP_KERNEL); | |
845 | if (!arr) | |
846 | return ERR_PTR(-ENOMEM); | |
847 | ||
848 | state->private_objs = arr; | |
849 | index = state->num_private_objs; | |
850 | memset(&state->private_objs[index], 0, sizeof(*state->private_objs)); | |
851 | ||
a4370c77 VS |
852 | obj_state = obj->funcs->atomic_duplicate_state(obj); |
853 | if (!obj_state) | |
b430c27a PD |
854 | return ERR_PTR(-ENOMEM); |
855 | ||
a4370c77 VS |
856 | state->private_objs[index].state = obj_state; |
857 | state->private_objs[index].old_state = obj->state; | |
858 | state->private_objs[index].new_state = obj_state; | |
859 | state->private_objs[index].ptr = obj; | |
e89ea355 | 860 | obj_state->state = state; |
a4370c77 | 861 | |
b430c27a PD |
862 | state->num_private_objs = num_objs; |
863 | ||
6e22dc35 CS |
864 | drm_dbg_atomic(state->dev, |
865 | "Added new private object %p state %p to %p\n", | |
866 | obj, obj_state, state); | |
b430c27a | 867 | |
a4370c77 | 868 | return obj_state; |
b430c27a PD |
869 | } |
870 | EXPORT_SYMBOL(drm_atomic_get_private_obj_state); | |
871 | ||
9801a7ea ATC |
872 | /** |
873 | * drm_atomic_get_old_private_obj_state | |
874 | * @state: global atomic state object | |
875 | * @obj: private_obj to grab | |
876 | * | |
877 | * This function returns the old private object state for the given private_obj, | |
878 | * or NULL if the private_obj is not part of the global atomic state. | |
879 | */ | |
880 | struct drm_private_state * | |
881 | drm_atomic_get_old_private_obj_state(struct drm_atomic_state *state, | |
882 | struct drm_private_obj *obj) | |
883 | { | |
884 | int i; | |
885 | ||
886 | for (i = 0; i < state->num_private_objs; i++) | |
887 | if (obj == state->private_objs[i].ptr) | |
888 | return state->private_objs[i].old_state; | |
889 | ||
890 | return NULL; | |
891 | } | |
892 | EXPORT_SYMBOL(drm_atomic_get_old_private_obj_state); | |
893 | ||
894 | /** | |
895 | * drm_atomic_get_new_private_obj_state | |
896 | * @state: global atomic state object | |
897 | * @obj: private_obj to grab | |
898 | * | |
899 | * This function returns the new private object state for the given private_obj, | |
900 | * or NULL if the private_obj is not part of the global atomic state. | |
901 | */ | |
902 | struct drm_private_state * | |
903 | drm_atomic_get_new_private_obj_state(struct drm_atomic_state *state, | |
904 | struct drm_private_obj *obj) | |
905 | { | |
906 | int i; | |
907 | ||
908 | for (i = 0; i < state->num_private_objs; i++) | |
909 | if (obj == state->private_objs[i].ptr) | |
910 | return state->private_objs[i].new_state; | |
911 | ||
912 | return NULL; | |
913 | } | |
914 | EXPORT_SYMBOL(drm_atomic_get_new_private_obj_state); | |
915 | ||
1b27fbdd LP |
916 | /** |
917 | * drm_atomic_get_old_connector_for_encoder - Get old connector for an encoder | |
918 | * @state: Atomic state | |
919 | * @encoder: The encoder to fetch the connector state for | |
920 | * | |
921 | * This function finds and returns the connector that was connected to @encoder | |
922 | * as specified by the @state. | |
923 | * | |
924 | * If there is no connector in @state which previously had @encoder connected to | |
925 | * it, this function will return NULL. While this may seem like an invalid use | |
926 | * case, it is sometimes useful to differentiate commits which had no prior | |
927 | * connectors attached to @encoder vs ones that did (and to inspect their | |
928 | * state). This is especially true in enable hooks because the pipeline has | |
929 | * changed. | |
930 | * | |
931 | * Returns: The old connector connected to @encoder, or NULL if the encoder is | |
932 | * not connected. | |
933 | */ | |
934 | struct drm_connector * | |
935 | drm_atomic_get_old_connector_for_encoder(struct drm_atomic_state *state, | |
936 | struct drm_encoder *encoder) | |
937 | { | |
938 | struct drm_connector_state *conn_state; | |
939 | struct drm_connector *connector; | |
940 | unsigned int i; | |
941 | ||
942 | for_each_old_connector_in_state(state, connector, conn_state, i) { | |
943 | if (conn_state->best_encoder == encoder) | |
944 | return connector; | |
945 | } | |
946 | ||
947 | return NULL; | |
948 | } | |
949 | EXPORT_SYMBOL(drm_atomic_get_old_connector_for_encoder); | |
950 | ||
951 | /** | |
952 | * drm_atomic_get_new_connector_for_encoder - Get new connector for an encoder | |
953 | * @state: Atomic state | |
954 | * @encoder: The encoder to fetch the connector state for | |
955 | * | |
956 | * This function finds and returns the connector that will be connected to | |
957 | * @encoder as specified by the @state. | |
958 | * | |
959 | * If there is no connector in @state which will have @encoder connected to it, | |
960 | * this function will return NULL. While this may seem like an invalid use case, | |
961 | * it is sometimes useful to differentiate commits which have no connectors | |
962 | * attached to @encoder vs ones that do (and to inspect their state). This is | |
963 | * especially true in disable hooks because the pipeline will change. | |
964 | * | |
965 | * Returns: The new connector connected to @encoder, or NULL if the encoder is | |
966 | * not connected. | |
967 | */ | |
968 | struct drm_connector * | |
969 | drm_atomic_get_new_connector_for_encoder(struct drm_atomic_state *state, | |
970 | struct drm_encoder *encoder) | |
971 | { | |
972 | struct drm_connector_state *conn_state; | |
973 | struct drm_connector *connector; | |
974 | unsigned int i; | |
975 | ||
976 | for_each_new_connector_in_state(state, connector, conn_state, i) { | |
977 | if (conn_state->best_encoder == encoder) | |
978 | return connector; | |
979 | } | |
980 | ||
981 | return NULL; | |
982 | } | |
983 | EXPORT_SYMBOL(drm_atomic_get_new_connector_for_encoder); | |
984 | ||
cc4ceb48 DV |
985 | /** |
986 | * drm_atomic_get_connector_state - get connector state | |
987 | * @state: global atomic state object | |
988 | * @connector: connector to get state object for | |
989 | * | |
990 | * This function returns the connector state for the given connector, | |
991 | * allocating it if needed. It will also grab the relevant connector lock to | |
992 | * make sure that the state is consistent. | |
993 | * | |
994 | * Returns: | |
995 | * | |
996 | * Either the allocated state or the error code encoded into the pointer. When | |
997 | * the error is EDEADLK then the w/w mutex code has detected a deadlock and the | |
998 | * entire atomic sequence must be restarted. All other errors are fatal. | |
999 | */ | |
1000 | struct drm_connector_state * | |
1001 | drm_atomic_get_connector_state(struct drm_atomic_state *state, | |
1002 | struct drm_connector *connector) | |
1003 | { | |
1004 | int ret, index; | |
1005 | struct drm_mode_config *config = &connector->dev->mode_config; | |
1006 | struct drm_connector_state *connector_state; | |
1007 | ||
7f4eaa89 ML |
1008 | WARN_ON(!state->acquire_ctx); |
1009 | ||
c7eb76f4 DV |
1010 | ret = drm_modeset_lock(&config->connection_mutex, state->acquire_ctx); |
1011 | if (ret) | |
1012 | return ERR_PTR(ret); | |
1013 | ||
cc4ceb48 DV |
1014 | index = drm_connector_index(connector); |
1015 | ||
f52b69f1 | 1016 | if (index >= state->num_connector) { |
63e83c1d | 1017 | struct __drm_connnectors_state *c; |
5fff80bb ML |
1018 | int alloc = max(index + 1, config->num_connector); |
1019 | ||
32ce2553 BG |
1020 | c = krealloc_array(state->connectors, alloc, |
1021 | sizeof(*state->connectors), GFP_KERNEL); | |
5fff80bb ML |
1022 | if (!c) |
1023 | return ERR_PTR(-ENOMEM); | |
1024 | ||
1025 | state->connectors = c; | |
1026 | memset(&state->connectors[state->num_connector], 0, | |
1027 | sizeof(*state->connectors) * (alloc - state->num_connector)); | |
1028 | ||
5fff80bb | 1029 | state->num_connector = alloc; |
f52b69f1 DV |
1030 | } |
1031 | ||
63e83c1d DV |
1032 | if (state->connectors[index].state) |
1033 | return state->connectors[index].state; | |
cc4ceb48 | 1034 | |
cc4ceb48 DV |
1035 | connector_state = connector->funcs->atomic_duplicate_state(connector); |
1036 | if (!connector_state) | |
1037 | return ERR_PTR(-ENOMEM); | |
1038 | ||
ad093607 | 1039 | drm_connector_get(connector); |
63e83c1d | 1040 | state->connectors[index].state = connector_state; |
581e49fe ML |
1041 | state->connectors[index].old_state = connector->state; |
1042 | state->connectors[index].new_state = connector_state; | |
63e83c1d | 1043 | state->connectors[index].ptr = connector; |
cc4ceb48 DV |
1044 | connector_state->state = state; |
1045 | ||
6e22dc35 | 1046 | drm_dbg_atomic(connector->dev, "Added [CONNECTOR:%d:%s] %p state to %p\n", |
6ac7c548 RK |
1047 | connector->base.id, connector->name, |
1048 | connector_state, state); | |
cc4ceb48 DV |
1049 | |
1050 | if (connector_state->crtc) { | |
1051 | struct drm_crtc_state *crtc_state; | |
1052 | ||
1053 | crtc_state = drm_atomic_get_crtc_state(state, | |
1054 | connector_state->crtc); | |
1055 | if (IS_ERR(crtc_state)) | |
1056 | return ERR_CAST(crtc_state); | |
1057 | } | |
1058 | ||
1059 | return connector_state; | |
1060 | } | |
1061 | EXPORT_SYMBOL(drm_atomic_get_connector_state); | |
1062 | ||
fceffb32 RC |
1063 | static void drm_atomic_connector_print_state(struct drm_printer *p, |
1064 | const struct drm_connector_state *state) | |
1065 | { | |
1066 | struct drm_connector *connector = state->connector; | |
1067 | ||
1068 | drm_printf(p, "connector[%u]: %s\n", connector->base.id, connector->name); | |
1069 | drm_printf(p, "\tcrtc=%s\n", state->crtc ? state->crtc->name : "(null)"); | |
1452c25b | 1070 | drm_printf(p, "\tself_refresh_aware=%d\n", state->self_refresh_aware); |
fceffb32 | 1071 | |
8cbc5caf BS |
1072 | if (connector->connector_type == DRM_MODE_CONNECTOR_WRITEBACK) |
1073 | if (state->writeback_job && state->writeback_job->fb) | |
1074 | drm_printf(p, "\tfb=%d\n", state->writeback_job->fb->base.id); | |
1075 | ||
fceffb32 RC |
1076 | if (connector->funcs->atomic_print_state) |
1077 | connector->funcs->atomic_print_state(p, state); | |
1078 | } | |
1079 | ||
75146591 BB |
1080 | /** |
1081 | * drm_atomic_get_bridge_state - get bridge state | |
1082 | * @state: global atomic state object | |
1083 | * @bridge: bridge to get state object for | |
1084 | * | |
1085 | * This function returns the bridge state for the given bridge, allocating it | |
1086 | * if needed. It will also grab the relevant bridge lock to make sure that the | |
1087 | * state is consistent. | |
1088 | * | |
1089 | * Returns: | |
1090 | * | |
1091 | * Either the allocated state or the error code encoded into the pointer. When | |
1092 | * the error is EDEADLK then the w/w mutex code has detected a deadlock and the | |
1093 | * entire atomic sequence must be restarted. | |
1094 | */ | |
1095 | struct drm_bridge_state * | |
1096 | drm_atomic_get_bridge_state(struct drm_atomic_state *state, | |
1097 | struct drm_bridge *bridge) | |
1098 | { | |
1099 | struct drm_private_state *obj_state; | |
1100 | ||
1101 | obj_state = drm_atomic_get_private_obj_state(state, &bridge->base); | |
1102 | if (IS_ERR(obj_state)) | |
1103 | return ERR_CAST(obj_state); | |
1104 | ||
1105 | return drm_priv_to_bridge_state(obj_state); | |
1106 | } | |
1107 | EXPORT_SYMBOL(drm_atomic_get_bridge_state); | |
1108 | ||
1109 | /** | |
1110 | * drm_atomic_get_old_bridge_state - get old bridge state, if it exists | |
1111 | * @state: global atomic state object | |
1112 | * @bridge: bridge to grab | |
1113 | * | |
1114 | * This function returns the old bridge state for the given bridge, or NULL if | |
1115 | * the bridge is not part of the global atomic state. | |
1116 | */ | |
1117 | struct drm_bridge_state * | |
1118 | drm_atomic_get_old_bridge_state(struct drm_atomic_state *state, | |
1119 | struct drm_bridge *bridge) | |
1120 | { | |
1121 | struct drm_private_state *obj_state; | |
1122 | ||
1123 | obj_state = drm_atomic_get_old_private_obj_state(state, &bridge->base); | |
1124 | if (!obj_state) | |
1125 | return NULL; | |
1126 | ||
1127 | return drm_priv_to_bridge_state(obj_state); | |
1128 | } | |
1129 | EXPORT_SYMBOL(drm_atomic_get_old_bridge_state); | |
1130 | ||
1131 | /** | |
1132 | * drm_atomic_get_new_bridge_state - get new bridge state, if it exists | |
1133 | * @state: global atomic state object | |
1134 | * @bridge: bridge to grab | |
1135 | * | |
1136 | * This function returns the new bridge state for the given bridge, or NULL if | |
1137 | * the bridge is not part of the global atomic state. | |
1138 | */ | |
1139 | struct drm_bridge_state * | |
1140 | drm_atomic_get_new_bridge_state(struct drm_atomic_state *state, | |
1141 | struct drm_bridge *bridge) | |
1142 | { | |
1143 | struct drm_private_state *obj_state; | |
1144 | ||
1145 | obj_state = drm_atomic_get_new_private_obj_state(state, &bridge->base); | |
1146 | if (!obj_state) | |
1147 | return NULL; | |
1148 | ||
1149 | return drm_priv_to_bridge_state(obj_state); | |
1150 | } | |
1151 | EXPORT_SYMBOL(drm_atomic_get_new_bridge_state); | |
1152 | ||
1153 | /** | |
1154 | * drm_atomic_add_encoder_bridges - add bridges attached to an encoder | |
1155 | * @state: atomic state | |
1156 | * @encoder: DRM encoder | |
1157 | * | |
1158 | * This function adds all bridges attached to @encoder. This is needed to add | |
1159 | * bridge states to @state and make them available when | |
91ea8330 BB |
1160 | * &drm_bridge_funcs.atomic_check(), &drm_bridge_funcs.atomic_pre_enable(), |
1161 | * &drm_bridge_funcs.atomic_enable(), | |
1162 | * &drm_bridge_funcs.atomic_disable_post_disable() are called. | |
75146591 BB |
1163 | * |
1164 | * Returns: | |
1165 | * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK | |
1166 | * then the w/w mutex code has detected a deadlock and the entire atomic | |
1167 | * sequence must be restarted. All other errors are fatal. | |
1168 | */ | |
1169 | int | |
1170 | drm_atomic_add_encoder_bridges(struct drm_atomic_state *state, | |
1171 | struct drm_encoder *encoder) | |
1172 | { | |
1173 | struct drm_bridge_state *bridge_state; | |
1174 | struct drm_bridge *bridge; | |
1175 | ||
1176 | if (!encoder) | |
1177 | return 0; | |
1178 | ||
6e22dc35 CS |
1179 | drm_dbg_atomic(encoder->dev, |
1180 | "Adding all bridges for [encoder:%d:%s] to %p\n", | |
1181 | encoder->base.id, encoder->name, state); | |
75146591 BB |
1182 | |
1183 | drm_for_each_bridge_in_chain(encoder, bridge) { | |
1184 | /* Skip bridges that don't implement the atomic state hooks. */ | |
1185 | if (!bridge->funcs->atomic_duplicate_state) | |
1186 | continue; | |
1187 | ||
1188 | bridge_state = drm_atomic_get_bridge_state(state, bridge); | |
1189 | if (IS_ERR(bridge_state)) | |
1190 | return PTR_ERR(bridge_state); | |
1191 | } | |
1192 | ||
1193 | return 0; | |
1194 | } | |
1195 | EXPORT_SYMBOL(drm_atomic_add_encoder_bridges); | |
1196 | ||
cc4ceb48 | 1197 | /** |
42240c90 | 1198 | * drm_atomic_add_affected_connectors - add connectors for CRTC |
cc4ceb48 | 1199 | * @state: atomic state |
42240c90 | 1200 | * @crtc: DRM CRTC |
cc4ceb48 DV |
1201 | * |
1202 | * This function walks the current configuration and adds all connectors | |
1203 | * currently using @crtc to the atomic configuration @state. Note that this | |
1204 | * function must acquire the connection mutex. This can potentially cause | |
a8a1de90 | 1205 | * unneeded serialization if the update is just for the planes on one CRTC. Hence |
cc4ceb48 DV |
1206 | * drivers and helpers should only call this when really needed (e.g. when a |
1207 | * full modeset needs to happen due to some change). | |
1208 | * | |
1209 | * Returns: | |
1210 | * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK | |
1211 | * then the w/w mutex code has detected a deadlock and the entire atomic | |
1212 | * sequence must be restarted. All other errors are fatal. | |
1213 | */ | |
1214 | int | |
1215 | drm_atomic_add_affected_connectors(struct drm_atomic_state *state, | |
1216 | struct drm_crtc *crtc) | |
1217 | { | |
1218 | struct drm_mode_config *config = &state->dev->mode_config; | |
1219 | struct drm_connector *connector; | |
1220 | struct drm_connector_state *conn_state; | |
613051da | 1221 | struct drm_connector_list_iter conn_iter; |
5351bbdd | 1222 | struct drm_crtc_state *crtc_state; |
cc4ceb48 DV |
1223 | int ret; |
1224 | ||
5351bbdd ML |
1225 | crtc_state = drm_atomic_get_crtc_state(state, crtc); |
1226 | if (IS_ERR(crtc_state)) | |
1227 | return PTR_ERR(crtc_state); | |
1228 | ||
cc4ceb48 DV |
1229 | ret = drm_modeset_lock(&config->connection_mutex, state->acquire_ctx); |
1230 | if (ret) | |
1231 | return ret; | |
1232 | ||
6e22dc35 CS |
1233 | drm_dbg_atomic(crtc->dev, |
1234 | "Adding all current connectors for [CRTC:%d:%s] to %p\n", | |
1235 | crtc->base.id, crtc->name, state); | |
cc4ceb48 DV |
1236 | |
1237 | /* | |
5351bbdd ML |
1238 | * Changed connectors are already in @state, so only need to look |
1239 | * at the connector_mask in crtc_state. | |
cc4ceb48 | 1240 | */ |
b982dab1 | 1241 | drm_connector_list_iter_begin(state->dev, &conn_iter); |
613051da | 1242 | drm_for_each_connector_iter(connector, &conn_iter) { |
73705732 | 1243 | if (!(crtc_state->connector_mask & drm_connector_mask(connector))) |
cc4ceb48 DV |
1244 | continue; |
1245 | ||
1246 | conn_state = drm_atomic_get_connector_state(state, connector); | |
613051da | 1247 | if (IS_ERR(conn_state)) { |
b982dab1 | 1248 | drm_connector_list_iter_end(&conn_iter); |
cc4ceb48 | 1249 | return PTR_ERR(conn_state); |
613051da | 1250 | } |
cc4ceb48 | 1251 | } |
b982dab1 | 1252 | drm_connector_list_iter_end(&conn_iter); |
cc4ceb48 DV |
1253 | |
1254 | return 0; | |
1255 | } | |
1256 | EXPORT_SYMBOL(drm_atomic_add_affected_connectors); | |
1257 | ||
e01e9f75 | 1258 | /** |
42240c90 | 1259 | * drm_atomic_add_affected_planes - add planes for CRTC |
e01e9f75 | 1260 | * @state: atomic state |
42240c90 | 1261 | * @crtc: DRM CRTC |
e01e9f75 ML |
1262 | * |
1263 | * This function walks the current configuration and adds all planes | |
1264 | * currently used by @crtc to the atomic configuration @state. This is useful | |
1265 | * when an atomic commit also needs to check all currently enabled plane on | |
1266 | * @crtc, e.g. when changing the mode. It's also useful when re-enabling a CRTC | |
1267 | * to avoid special code to force-enable all planes. | |
1268 | * | |
1269 | * Since acquiring a plane state will always also acquire the w/w mutex of the | |
1270 | * current CRTC for that plane (if there is any) adding all the plane states for | |
a8a1de90 | 1271 | * a CRTC will not reduce parallelism of atomic updates. |
e01e9f75 ML |
1272 | * |
1273 | * Returns: | |
1274 | * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK | |
1275 | * then the w/w mutex code has detected a deadlock and the entire atomic | |
1276 | * sequence must be restarted. All other errors are fatal. | |
1277 | */ | |
1278 | int | |
1279 | drm_atomic_add_affected_planes(struct drm_atomic_state *state, | |
1280 | struct drm_crtc *crtc) | |
1281 | { | |
534903d6 VS |
1282 | const struct drm_crtc_state *old_crtc_state = |
1283 | drm_atomic_get_old_crtc_state(state, crtc); | |
e01e9f75 ML |
1284 | struct drm_plane *plane; |
1285 | ||
b4d93679 | 1286 | WARN_ON(!drm_atomic_get_new_crtc_state(state, crtc)); |
e01e9f75 | 1287 | |
6e22dc35 CS |
1288 | drm_dbg_atomic(crtc->dev, |
1289 | "Adding all current planes for [CRTC:%d:%s] to %p\n", | |
1290 | crtc->base.id, crtc->name, state); | |
b6f690ab | 1291 | |
534903d6 | 1292 | drm_for_each_plane_mask(plane, state->dev, old_crtc_state->plane_mask) { |
e01e9f75 ML |
1293 | struct drm_plane_state *plane_state = |
1294 | drm_atomic_get_plane_state(state, plane); | |
1295 | ||
1296 | if (IS_ERR(plane_state)) | |
1297 | return PTR_ERR(plane_state); | |
1298 | } | |
1299 | return 0; | |
1300 | } | |
1301 | EXPORT_SYMBOL(drm_atomic_add_affected_planes); | |
1302 | ||
cc4ceb48 DV |
1303 | /** |
1304 | * drm_atomic_check_only - check whether a given config would work | |
1305 | * @state: atomic configuration to check | |
1306 | * | |
1307 | * Note that this function can return -EDEADLK if the driver needed to acquire | |
1308 | * more locks but encountered a deadlock. The caller must then do the usual w/w | |
1309 | * backoff dance and restart. All other errors are fatal. | |
1310 | * | |
1311 | * Returns: | |
1312 | * 0 on success, negative error code on failure. | |
1313 | */ | |
1314 | int drm_atomic_check_only(struct drm_atomic_state *state) | |
1315 | { | |
5e743737 RC |
1316 | struct drm_device *dev = state->dev; |
1317 | struct drm_mode_config *config = &dev->mode_config; | |
df63b999 | 1318 | struct drm_plane *plane; |
d9be05b7 VS |
1319 | struct drm_plane_state *old_plane_state; |
1320 | struct drm_plane_state *new_plane_state; | |
df63b999 | 1321 | struct drm_crtc *crtc; |
b2432adf VS |
1322 | struct drm_crtc_state *old_crtc_state; |
1323 | struct drm_crtc_state *new_crtc_state; | |
935774cd BS |
1324 | struct drm_connector *conn; |
1325 | struct drm_connector_state *conn_state; | |
1cdb005d FDF |
1326 | unsigned int requested_crtc = 0; |
1327 | unsigned int affected_crtc = 0; | |
5e743737 | 1328 | int i, ret = 0; |
cc4ceb48 | 1329 | |
6e22dc35 | 1330 | drm_dbg_atomic(dev, "checking %p\n", state); |
cc4ceb48 | 1331 | |
5ec1cebd MN |
1332 | for_each_new_crtc_in_state(state, crtc, new_crtc_state, i) { |
1333 | if (new_crtc_state->enable) | |
1334 | requested_crtc |= drm_crtc_mask(crtc); | |
1335 | } | |
fb6473a4 | 1336 | |
d9be05b7 VS |
1337 | for_each_oldnew_plane_in_state(state, plane, old_plane_state, new_plane_state, i) { |
1338 | ret = drm_atomic_plane_check(old_plane_state, new_plane_state); | |
5e743737 | 1339 | if (ret) { |
6e22dc35 CS |
1340 | drm_dbg_atomic(dev, "[PLANE:%d:%s] atomic core check failed\n", |
1341 | plane->base.id, plane->name); | |
5e743737 RC |
1342 | return ret; |
1343 | } | |
1344 | } | |
1345 | ||
b2432adf VS |
1346 | for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) { |
1347 | ret = drm_atomic_crtc_check(old_crtc_state, new_crtc_state); | |
5e743737 | 1348 | if (ret) { |
6e22dc35 CS |
1349 | drm_dbg_atomic(dev, "[CRTC:%d:%s] atomic core check failed\n", |
1350 | crtc->base.id, crtc->name); | |
5e743737 RC |
1351 | return ret; |
1352 | } | |
1353 | } | |
1354 | ||
935774cd BS |
1355 | for_each_new_connector_in_state(state, conn, conn_state, i) { |
1356 | ret = drm_atomic_connector_check(conn, conn_state); | |
1357 | if (ret) { | |
6e22dc35 CS |
1358 | drm_dbg_atomic(dev, "[CONNECTOR:%d:%s] atomic core check failed\n", |
1359 | conn->base.id, conn->name); | |
935774cd BS |
1360 | return ret; |
1361 | } | |
1362 | } | |
1363 | ||
14d4e522 | 1364 | if (config->funcs->atomic_check) { |
5e743737 RC |
1365 | ret = config->funcs->atomic_check(state->dev, state); |
1366 | ||
14d4e522 | 1367 | if (ret) { |
6e22dc35 CS |
1368 | drm_dbg_atomic(dev, "atomic driver check for %p failed: %d\n", |
1369 | state, ret); | |
14d4e522 LP |
1370 | return ret; |
1371 | } | |
1372 | } | |
a0ffc51e | 1373 | |
d34f20d6 | 1374 | if (!state->allow_modeset) { |
b2432adf VS |
1375 | for_each_new_crtc_in_state(state, crtc, new_crtc_state, i) { |
1376 | if (drm_atomic_crtc_needs_modeset(new_crtc_state)) { | |
6e22dc35 CS |
1377 | drm_dbg_atomic(dev, "[CRTC:%d:%s] requires full modeset\n", |
1378 | crtc->base.id, crtc->name); | |
d34f20d6 RC |
1379 | return -EINVAL; |
1380 | } | |
1381 | } | |
1382 | } | |
1383 | ||
5ec1cebd MN |
1384 | for_each_new_crtc_in_state(state, crtc, new_crtc_state, i) { |
1385 | if (new_crtc_state->enable) | |
1386 | affected_crtc |= drm_crtc_mask(crtc); | |
1387 | } | |
fb6473a4 DV |
1388 | |
1389 | /* | |
1390 | * For commits that allow modesets drivers can add other CRTCs to the | |
1391 | * atomic commit, e.g. when they need to reallocate global resources. | |
1392 | * This can cause spurious EBUSY, which robs compositors of a very | |
1393 | * effective sanity check for their drawing loop. Therefor only allow | |
1394 | * drivers to add unrelated CRTC states for modeset commits. | |
1395 | * | |
1396 | * FIXME: Should add affected_crtc mask to the ATOMIC IOCTL as an output | |
1397 | * so compositors know what's going on. | |
1398 | */ | |
1399 | if (affected_crtc != requested_crtc) { | |
6e22dc35 CS |
1400 | drm_dbg_atomic(dev, |
1401 | "driver added CRTC to commit: requested 0x%x, affected 0x%0x\n", | |
1402 | requested_crtc, affected_crtc); | |
fb6473a4 DV |
1403 | WARN(!state->allow_modeset, "adding CRTC not allowed without modesets: requested 0x%x, affected 0x%0x\n", |
1404 | requested_crtc, affected_crtc); | |
1405 | } | |
1406 | ||
a0ffc51e | 1407 | return 0; |
cc4ceb48 DV |
1408 | } |
1409 | EXPORT_SYMBOL(drm_atomic_check_only); | |
1410 | ||
1411 | /** | |
1412 | * drm_atomic_commit - commit configuration atomically | |
1413 | * @state: atomic configuration to check | |
1414 | * | |
1415 | * Note that this function can return -EDEADLK if the driver needed to acquire | |
1416 | * more locks but encountered a deadlock. The caller must then do the usual w/w | |
1417 | * backoff dance and restart. All other errors are fatal. | |
1418 | * | |
76fede2f ML |
1419 | * This function will take its own reference on @state. |
1420 | * Callers should always release their reference with drm_atomic_state_put(). | |
cc4ceb48 DV |
1421 | * |
1422 | * Returns: | |
1423 | * 0 on success, negative error code on failure. | |
1424 | */ | |
1425 | int drm_atomic_commit(struct drm_atomic_state *state) | |
1426 | { | |
1427 | struct drm_mode_config *config = &state->dev->mode_config; | |
018ad18f | 1428 | struct drm_printer p = drm_info_printer(state->dev->dev); |
cc4ceb48 DV |
1429 | int ret; |
1430 | ||
018ad18f MR |
1431 | if (drm_debug_enabled(DRM_UT_STATE)) |
1432 | drm_atomic_print_new_state(state, &p); | |
1433 | ||
cc4ceb48 DV |
1434 | ret = drm_atomic_check_only(state); |
1435 | if (ret) | |
1436 | return ret; | |
1437 | ||
6e22dc35 | 1438 | drm_dbg_atomic(state->dev, "committing %p\n", state); |
cc4ceb48 DV |
1439 | |
1440 | return config->funcs->atomic_commit(state->dev, state, false); | |
1441 | } | |
1442 | EXPORT_SYMBOL(drm_atomic_commit); | |
1443 | ||
1444 | /** | |
d574528a | 1445 | * drm_atomic_nonblocking_commit - atomic nonblocking commit |
cc4ceb48 DV |
1446 | * @state: atomic configuration to check |
1447 | * | |
1448 | * Note that this function can return -EDEADLK if the driver needed to acquire | |
1449 | * more locks but encountered a deadlock. The caller must then do the usual w/w | |
1450 | * backoff dance and restart. All other errors are fatal. | |
1451 | * | |
76fede2f ML |
1452 | * This function will take its own reference on @state. |
1453 | * Callers should always release their reference with drm_atomic_state_put(). | |
cc4ceb48 DV |
1454 | * |
1455 | * Returns: | |
1456 | * 0 on success, negative error code on failure. | |
1457 | */ | |
b837ba0a | 1458 | int drm_atomic_nonblocking_commit(struct drm_atomic_state *state) |
cc4ceb48 DV |
1459 | { |
1460 | struct drm_mode_config *config = &state->dev->mode_config; | |
1461 | int ret; | |
1462 | ||
1463 | ret = drm_atomic_check_only(state); | |
1464 | if (ret) | |
1465 | return ret; | |
1466 | ||
6e22dc35 | 1467 | drm_dbg_atomic(state->dev, "committing %p nonblocking\n", state); |
cc4ceb48 DV |
1468 | |
1469 | return config->funcs->atomic_commit(state->dev, state, true); | |
1470 | } | |
b837ba0a | 1471 | EXPORT_SYMBOL(drm_atomic_nonblocking_commit); |
d34f20d6 | 1472 | |
df737895 NT |
1473 | /* just used from drm-client and atomic-helper: */ |
1474 | int __drm_atomic_helper_disable_plane(struct drm_plane *plane, | |
1475 | struct drm_plane_state *plane_state) | |
1476 | { | |
1477 | int ret; | |
1478 | ||
1479 | ret = drm_atomic_set_crtc_for_plane(plane_state, NULL); | |
1480 | if (ret != 0) | |
1481 | return ret; | |
1482 | ||
1483 | drm_atomic_set_fb_for_plane(plane_state, NULL); | |
1484 | plane_state->crtc_x = 0; | |
1485 | plane_state->crtc_y = 0; | |
1486 | plane_state->crtc_w = 0; | |
1487 | plane_state->crtc_h = 0; | |
1488 | plane_state->src_x = 0; | |
1489 | plane_state->src_y = 0; | |
1490 | plane_state->src_w = 0; | |
1491 | plane_state->src_h = 0; | |
1492 | ||
1493 | return 0; | |
1494 | } | |
1495 | EXPORT_SYMBOL(__drm_atomic_helper_disable_plane); | |
1496 | ||
1497 | static int update_output_state(struct drm_atomic_state *state, | |
1498 | struct drm_mode_set *set) | |
1499 | { | |
1500 | struct drm_device *dev = set->crtc->dev; | |
1501 | struct drm_crtc *crtc; | |
1502 | struct drm_crtc_state *new_crtc_state; | |
1503 | struct drm_connector *connector; | |
1504 | struct drm_connector_state *new_conn_state; | |
1505 | int ret, i; | |
1506 | ||
1507 | ret = drm_modeset_lock(&dev->mode_config.connection_mutex, | |
1508 | state->acquire_ctx); | |
1509 | if (ret) | |
1510 | return ret; | |
1511 | ||
1512 | /* First disable all connectors on the target crtc. */ | |
1513 | ret = drm_atomic_add_affected_connectors(state, set->crtc); | |
1514 | if (ret) | |
1515 | return ret; | |
1516 | ||
1517 | for_each_new_connector_in_state(state, connector, new_conn_state, i) { | |
1518 | if (new_conn_state->crtc == set->crtc) { | |
1519 | ret = drm_atomic_set_crtc_for_connector(new_conn_state, | |
1520 | NULL); | |
1521 | if (ret) | |
1522 | return ret; | |
1523 | ||
1524 | /* Make sure legacy setCrtc always re-trains */ | |
1525 | new_conn_state->link_status = DRM_LINK_STATUS_GOOD; | |
1526 | } | |
1527 | } | |
1528 | ||
1529 | /* Then set all connectors from set->connectors on the target crtc */ | |
1530 | for (i = 0; i < set->num_connectors; i++) { | |
1531 | new_conn_state = drm_atomic_get_connector_state(state, | |
1532 | set->connectors[i]); | |
1533 | if (IS_ERR(new_conn_state)) | |
1534 | return PTR_ERR(new_conn_state); | |
1535 | ||
1536 | ret = drm_atomic_set_crtc_for_connector(new_conn_state, | |
1537 | set->crtc); | |
1538 | if (ret) | |
1539 | return ret; | |
1540 | } | |
1541 | ||
1542 | for_each_new_crtc_in_state(state, crtc, new_crtc_state, i) { | |
1543 | /* | |
1544 | * Don't update ->enable for the CRTC in the set_config request, | |
1545 | * since a mismatch would indicate a bug in the upper layers. | |
1546 | * The actual modeset code later on will catch any | |
1547 | * inconsistencies here. | |
1548 | */ | |
1549 | if (crtc == set->crtc) | |
1550 | continue; | |
1551 | ||
1552 | if (!new_crtc_state->connector_mask) { | |
1553 | ret = drm_atomic_set_mode_prop_for_crtc(new_crtc_state, | |
1554 | NULL); | |
1555 | if (ret < 0) | |
1556 | return ret; | |
1557 | ||
1558 | new_crtc_state->active = false; | |
1559 | } | |
1560 | } | |
1561 | ||
1562 | return 0; | |
1563 | } | |
1564 | ||
1565 | /* just used from drm-client and atomic-helper: */ | |
1566 | int __drm_atomic_helper_set_config(struct drm_mode_set *set, | |
1567 | struct drm_atomic_state *state) | |
1568 | { | |
1569 | struct drm_crtc_state *crtc_state; | |
1570 | struct drm_plane_state *primary_state; | |
1571 | struct drm_crtc *crtc = set->crtc; | |
1572 | int hdisplay, vdisplay; | |
1573 | int ret; | |
1574 | ||
1575 | crtc_state = drm_atomic_get_crtc_state(state, crtc); | |
1576 | if (IS_ERR(crtc_state)) | |
1577 | return PTR_ERR(crtc_state); | |
1578 | ||
1579 | primary_state = drm_atomic_get_plane_state(state, crtc->primary); | |
1580 | if (IS_ERR(primary_state)) | |
1581 | return PTR_ERR(primary_state); | |
1582 | ||
1583 | if (!set->mode) { | |
1584 | WARN_ON(set->fb); | |
1585 | WARN_ON(set->num_connectors); | |
1586 | ||
1587 | ret = drm_atomic_set_mode_for_crtc(crtc_state, NULL); | |
1588 | if (ret != 0) | |
1589 | return ret; | |
1590 | ||
1591 | crtc_state->active = false; | |
1592 | ||
1593 | ret = drm_atomic_set_crtc_for_plane(primary_state, NULL); | |
1594 | if (ret != 0) | |
1595 | return ret; | |
1596 | ||
1597 | drm_atomic_set_fb_for_plane(primary_state, NULL); | |
1598 | ||
1599 | goto commit; | |
1600 | } | |
1601 | ||
1602 | WARN_ON(!set->fb); | |
1603 | WARN_ON(!set->num_connectors); | |
1604 | ||
1605 | ret = drm_atomic_set_mode_for_crtc(crtc_state, set->mode); | |
1606 | if (ret != 0) | |
1607 | return ret; | |
1608 | ||
1609 | crtc_state->active = true; | |
1610 | ||
1611 | ret = drm_atomic_set_crtc_for_plane(primary_state, crtc); | |
1612 | if (ret != 0) | |
1613 | return ret; | |
1614 | ||
1615 | drm_mode_get_hv_timing(set->mode, &hdisplay, &vdisplay); | |
1616 | ||
1617 | drm_atomic_set_fb_for_plane(primary_state, set->fb); | |
1618 | primary_state->crtc_x = 0; | |
1619 | primary_state->crtc_y = 0; | |
1620 | primary_state->crtc_w = hdisplay; | |
1621 | primary_state->crtc_h = vdisplay; | |
1622 | primary_state->src_x = set->x << 16; | |
1623 | primary_state->src_y = set->y << 16; | |
1624 | if (drm_rotation_90_or_270(primary_state->rotation)) { | |
1625 | primary_state->src_w = vdisplay << 16; | |
1626 | primary_state->src_h = hdisplay << 16; | |
1627 | } else { | |
1628 | primary_state->src_w = hdisplay << 16; | |
1629 | primary_state->src_h = vdisplay << 16; | |
1630 | } | |
1631 | ||
1632 | commit: | |
1633 | ret = update_output_state(state, set); | |
1634 | if (ret) | |
1635 | return ret; | |
1636 | ||
1637 | return 0; | |
1638 | } | |
1639 | EXPORT_SYMBOL(__drm_atomic_helper_set_config); | |
1640 | ||
97a1f01b MR |
1641 | static void drm_atomic_private_obj_print_state(struct drm_printer *p, |
1642 | const struct drm_private_state *state) | |
1643 | { | |
1644 | struct drm_private_obj *obj = state->obj; | |
1645 | ||
1646 | if (obj->funcs->atomic_print_state) | |
1647 | obj->funcs->atomic_print_state(p, state); | |
1648 | } | |
1649 | ||
a4324a7a AK |
1650 | /** |
1651 | * drm_atomic_print_new_state - prints drm atomic state | |
1652 | * @state: atomic configuration to check | |
1653 | * @p: drm printer | |
1654 | * | |
1655 | * This functions prints the drm atomic state snapshot using the drm printer | |
1656 | * which is passed to it. This snapshot can be used for debugging purposes. | |
1657 | * | |
1658 | * Note that this function looks into the new state objects and hence its not | |
1659 | * safe to be used after the call to drm_atomic_helper_commit_hw_done(). | |
1660 | */ | |
1661 | void drm_atomic_print_new_state(const struct drm_atomic_state *state, | |
1662 | struct drm_printer *p) | |
fceffb32 | 1663 | { |
fceffb32 RC |
1664 | struct drm_plane *plane; |
1665 | struct drm_plane_state *plane_state; | |
1666 | struct drm_crtc *crtc; | |
1667 | struct drm_crtc_state *crtc_state; | |
1668 | struct drm_connector *connector; | |
1669 | struct drm_connector_state *connector_state; | |
97a1f01b MR |
1670 | struct drm_private_obj *obj; |
1671 | struct drm_private_state *obj_state; | |
fceffb32 RC |
1672 | int i; |
1673 | ||
a4324a7a | 1674 | if (!p) { |
6e22dc35 | 1675 | drm_err(state->dev, "invalid drm printer\n"); |
a4324a7a AK |
1676 | return; |
1677 | } | |
1678 | ||
6e22dc35 | 1679 | drm_dbg_atomic(state->dev, "checking %p\n", state); |
fceffb32 | 1680 | |
5721a380 | 1681 | for_each_new_plane_in_state(state, plane, plane_state, i) |
a4324a7a | 1682 | drm_atomic_plane_print_state(p, plane_state); |
fceffb32 | 1683 | |
5721a380 | 1684 | for_each_new_crtc_in_state(state, crtc, crtc_state, i) |
a4324a7a | 1685 | drm_atomic_crtc_print_state(p, crtc_state); |
fceffb32 | 1686 | |
5721a380 | 1687 | for_each_new_connector_in_state(state, connector, connector_state, i) |
a4324a7a | 1688 | drm_atomic_connector_print_state(p, connector_state); |
97a1f01b MR |
1689 | |
1690 | for_each_new_private_obj_in_state(state, obj, obj_state, i) | |
1691 | drm_atomic_private_obj_print_state(p, obj_state); | |
fceffb32 | 1692 | } |
a4324a7a | 1693 | EXPORT_SYMBOL(drm_atomic_print_new_state); |
fceffb32 | 1694 | |
c2d85564 DV |
1695 | static void __drm_state_dump(struct drm_device *dev, struct drm_printer *p, |
1696 | bool take_locks) | |
6559c901 RC |
1697 | { |
1698 | struct drm_mode_config *config = &dev->mode_config; | |
1699 | struct drm_plane *plane; | |
1700 | struct drm_crtc *crtc; | |
1701 | struct drm_connector *connector; | |
613051da | 1702 | struct drm_connector_list_iter conn_iter; |
6559c901 | 1703 | |
3c499ea0 | 1704 | if (!drm_drv_uses_atomic_modeset(dev)) |
6559c901 RC |
1705 | return; |
1706 | ||
c2d85564 DV |
1707 | list_for_each_entry(plane, &config->plane_list, head) { |
1708 | if (take_locks) | |
1709 | drm_modeset_lock(&plane->mutex, NULL); | |
6559c901 | 1710 | drm_atomic_plane_print_state(p, plane->state); |
c2d85564 DV |
1711 | if (take_locks) |
1712 | drm_modeset_unlock(&plane->mutex); | |
1713 | } | |
6559c901 | 1714 | |
c2d85564 DV |
1715 | list_for_each_entry(crtc, &config->crtc_list, head) { |
1716 | if (take_locks) | |
1717 | drm_modeset_lock(&crtc->mutex, NULL); | |
6559c901 | 1718 | drm_atomic_crtc_print_state(p, crtc->state); |
c2d85564 DV |
1719 | if (take_locks) |
1720 | drm_modeset_unlock(&crtc->mutex); | |
1721 | } | |
6559c901 | 1722 | |
b982dab1 | 1723 | drm_connector_list_iter_begin(dev, &conn_iter); |
c2d85564 DV |
1724 | if (take_locks) |
1725 | drm_modeset_lock(&dev->mode_config.connection_mutex, NULL); | |
613051da | 1726 | drm_for_each_connector_iter(connector, &conn_iter) |
6559c901 | 1727 | drm_atomic_connector_print_state(p, connector->state); |
c2d85564 DV |
1728 | if (take_locks) |
1729 | drm_modeset_unlock(&dev->mode_config.connection_mutex); | |
b982dab1 | 1730 | drm_connector_list_iter_end(&conn_iter); |
6559c901 | 1731 | } |
c2d85564 DV |
1732 | |
1733 | /** | |
1734 | * drm_state_dump - dump entire device atomic state | |
1735 | * @dev: the drm device | |
1736 | * @p: where to print the state to | |
1737 | * | |
1738 | * Just for debugging. Drivers might want an option to dump state | |
1739 | * to dmesg in case of error irq's. (Hint, you probably want to | |
1740 | * ratelimit this!) | |
1741 | * | |
bd1fbef7 DV |
1742 | * The caller must wrap this drm_modeset_lock_all_ctx() and |
1743 | * drm_modeset_drop_locks(). If this is called from error irq handler, it should | |
1744 | * not be enabled by default - if you are debugging errors you might | |
1745 | * not care that this is racey, but calling this without all modeset locks held | |
1746 | * is inherently unsafe. | |
c2d85564 DV |
1747 | */ |
1748 | void drm_state_dump(struct drm_device *dev, struct drm_printer *p) | |
1749 | { | |
1750 | __drm_state_dump(dev, p, false); | |
1751 | } | |
6559c901 RC |
1752 | EXPORT_SYMBOL(drm_state_dump); |
1753 | ||
1754 | #ifdef CONFIG_DEBUG_FS | |
1755 | static int drm_state_info(struct seq_file *m, void *data) | |
1756 | { | |
1757 | struct drm_info_node *node = (struct drm_info_node *) m->private; | |
1758 | struct drm_device *dev = node->minor->dev; | |
1759 | struct drm_printer p = drm_seq_file_printer(m); | |
1760 | ||
c2d85564 | 1761 | __drm_state_dump(dev, &p, true); |
6559c901 RC |
1762 | |
1763 | return 0; | |
1764 | } | |
1765 | ||
1766 | /* any use in debugfs files to dump individual planes/crtc/etc? */ | |
1767 | static const struct drm_info_list drm_atomic_debugfs_list[] = { | |
1768 | {"state", drm_state_info, 0}, | |
1769 | }; | |
1770 | ||
7ce84471 | 1771 | void drm_atomic_debugfs_init(struct drm_minor *minor) |
6559c901 | 1772 | { |
e196e140 WK |
1773 | drm_debugfs_create_files(drm_atomic_debugfs_list, |
1774 | ARRAY_SIZE(drm_atomic_debugfs_list), | |
1775 | minor->debugfs_root, minor); | |
6559c901 RC |
1776 | } |
1777 | #endif |