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cc4ceb48 DV |
1 | /* |
2 | * Copyright (C) 2014 Red Hat | |
3 | * Copyright (C) 2014 Intel Corp. | |
4 | * | |
5 | * Permission is hereby granted, free of charge, to any person obtaining a | |
6 | * copy of this software and associated documentation files (the "Software"), | |
7 | * to deal in the Software without restriction, including without limitation | |
8 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
9 | * and/or sell copies of the Software, and to permit persons to whom the | |
10 | * Software is furnished to do so, subject to the following conditions: | |
11 | * | |
12 | * The above copyright notice and this permission notice shall be included in | |
13 | * all copies or substantial portions of the Software. | |
14 | * | |
15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
18 | * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR | |
19 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, | |
20 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR | |
21 | * OTHER DEALINGS IN THE SOFTWARE. | |
22 | * | |
23 | * Authors: | |
24 | * Rob Clark <robdclark@gmail.com> | |
25 | * Daniel Vetter <daniel.vetter@ffwll.ch> | |
26 | */ | |
27 | ||
28 | ||
0500c04e SR |
29 | #include <linux/sync_file.h> |
30 | ||
cc4ceb48 | 31 | #include <drm/drm_atomic.h> |
72fdb40c | 32 | #include <drm/drm_atomic_uapi.h> |
0500c04e SR |
33 | #include <drm/drm_debugfs.h> |
34 | #include <drm/drm_device.h> | |
35 | #include <drm/drm_drv.h> | |
36 | #include <drm/drm_file.h> | |
37 | #include <drm/drm_fourcc.h> | |
5488dc16 | 38 | #include <drm/drm_mode.h> |
fceffb32 | 39 | #include <drm/drm_print.h> |
935774cd | 40 | #include <drm/drm_writeback.h> |
cc4ceb48 | 41 | |
be35f94f | 42 | #include "drm_crtc_internal.h" |
f02b604b | 43 | #include "drm_internal.h" |
be35f94f | 44 | |
b3ba3f6f | 45 | void __drm_crtc_commit_free(struct kref *kref) |
3b24f7d6 DV |
46 | { |
47 | struct drm_crtc_commit *commit = | |
48 | container_of(kref, struct drm_crtc_commit, ref); | |
49 | ||
50 | kfree(commit); | |
51 | } | |
b3ba3f6f | 52 | EXPORT_SYMBOL(__drm_crtc_commit_free); |
3b24f7d6 | 53 | |
036ef573 ML |
54 | /** |
55 | * drm_atomic_state_default_release - | |
56 | * release memory initialized by drm_atomic_state_init | |
57 | * @state: atomic state | |
58 | * | |
59 | * Free all the memory allocated by drm_atomic_state_init. | |
da6c0596 DV |
60 | * This should only be used by drivers which are still subclassing |
61 | * &drm_atomic_state and haven't switched to &drm_private_state yet. | |
036ef573 ML |
62 | */ |
63 | void drm_atomic_state_default_release(struct drm_atomic_state *state) | |
cc4ceb48 DV |
64 | { |
65 | kfree(state->connectors); | |
cc4ceb48 | 66 | kfree(state->crtcs); |
cc4ceb48 | 67 | kfree(state->planes); |
b430c27a | 68 | kfree(state->private_objs); |
cc4ceb48 | 69 | } |
036ef573 | 70 | EXPORT_SYMBOL(drm_atomic_state_default_release); |
cc4ceb48 DV |
71 | |
72 | /** | |
036ef573 | 73 | * drm_atomic_state_init - init new atomic state |
cc4ceb48 | 74 | * @dev: DRM device |
036ef573 | 75 | * @state: atomic state |
cc4ceb48 | 76 | * |
036ef573 | 77 | * Default implementation for filling in a new atomic state. |
da6c0596 DV |
78 | * This should only be used by drivers which are still subclassing |
79 | * &drm_atomic_state and haven't switched to &drm_private_state yet. | |
cc4ceb48 | 80 | */ |
036ef573 ML |
81 | int |
82 | drm_atomic_state_init(struct drm_device *dev, struct drm_atomic_state *state) | |
cc4ceb48 | 83 | { |
0853695c CW |
84 | kref_init(&state->ref); |
85 | ||
d34f20d6 RC |
86 | /* TODO legacy paths should maybe do a better job about |
87 | * setting this appropriately? | |
88 | */ | |
89 | state->allow_modeset = true; | |
90 | ||
cc4ceb48 DV |
91 | state->crtcs = kcalloc(dev->mode_config.num_crtc, |
92 | sizeof(*state->crtcs), GFP_KERNEL); | |
93 | if (!state->crtcs) | |
94 | goto fail; | |
cc4ceb48 DV |
95 | state->planes = kcalloc(dev->mode_config.num_total_plane, |
96 | sizeof(*state->planes), GFP_KERNEL); | |
97 | if (!state->planes) | |
98 | goto fail; | |
cc4ceb48 DV |
99 | |
100 | state->dev = dev; | |
101 | ||
036ef573 | 102 | DRM_DEBUG_ATOMIC("Allocated atomic state %p\n", state); |
cc4ceb48 | 103 | |
036ef573 | 104 | return 0; |
cc4ceb48 | 105 | fail: |
036ef573 ML |
106 | drm_atomic_state_default_release(state); |
107 | return -ENOMEM; | |
108 | } | |
109 | EXPORT_SYMBOL(drm_atomic_state_init); | |
110 | ||
111 | /** | |
112 | * drm_atomic_state_alloc - allocate atomic state | |
113 | * @dev: DRM device | |
114 | * | |
115 | * This allocates an empty atomic state to track updates. | |
116 | */ | |
117 | struct drm_atomic_state * | |
118 | drm_atomic_state_alloc(struct drm_device *dev) | |
119 | { | |
120 | struct drm_mode_config *config = &dev->mode_config; | |
036ef573 ML |
121 | |
122 | if (!config->funcs->atomic_state_alloc) { | |
ac7c7483 DK |
123 | struct drm_atomic_state *state; |
124 | ||
036ef573 ML |
125 | state = kzalloc(sizeof(*state), GFP_KERNEL); |
126 | if (!state) | |
127 | return NULL; | |
128 | if (drm_atomic_state_init(dev, state) < 0) { | |
129 | kfree(state); | |
130 | return NULL; | |
131 | } | |
132 | return state; | |
133 | } | |
cc4ceb48 | 134 | |
036ef573 | 135 | return config->funcs->atomic_state_alloc(dev); |
cc4ceb48 DV |
136 | } |
137 | EXPORT_SYMBOL(drm_atomic_state_alloc); | |
138 | ||
139 | /** | |
036ef573 | 140 | * drm_atomic_state_default_clear - clear base atomic state |
cc4ceb48 DV |
141 | * @state: atomic state |
142 | * | |
036ef573 | 143 | * Default implementation for clearing atomic state. |
da6c0596 DV |
144 | * This should only be used by drivers which are still subclassing |
145 | * &drm_atomic_state and haven't switched to &drm_private_state yet. | |
cc4ceb48 | 146 | */ |
036ef573 | 147 | void drm_atomic_state_default_clear(struct drm_atomic_state *state) |
cc4ceb48 DV |
148 | { |
149 | struct drm_device *dev = state->dev; | |
6f75cea6 | 150 | struct drm_mode_config *config = &dev->mode_config; |
cc4ceb48 DV |
151 | int i; |
152 | ||
17a38d9c | 153 | DRM_DEBUG_ATOMIC("Clearing atomic state %p\n", state); |
cc4ceb48 | 154 | |
f52b69f1 | 155 | for (i = 0; i < state->num_connector; i++) { |
63e83c1d | 156 | struct drm_connector *connector = state->connectors[i].ptr; |
cc4ceb48 DV |
157 | |
158 | if (!connector) | |
159 | continue; | |
160 | ||
d2307dea | 161 | connector->funcs->atomic_destroy_state(connector, |
63e83c1d DV |
162 | state->connectors[i].state); |
163 | state->connectors[i].ptr = NULL; | |
164 | state->connectors[i].state = NULL; | |
f0b408ee VS |
165 | state->connectors[i].old_state = NULL; |
166 | state->connectors[i].new_state = NULL; | |
ad093607 | 167 | drm_connector_put(connector); |
cc4ceb48 DV |
168 | } |
169 | ||
6f75cea6 | 170 | for (i = 0; i < config->num_crtc; i++) { |
5d943aa6 | 171 | struct drm_crtc *crtc = state->crtcs[i].ptr; |
cc4ceb48 DV |
172 | |
173 | if (!crtc) | |
174 | continue; | |
175 | ||
176 | crtc->funcs->atomic_destroy_state(crtc, | |
5d943aa6 | 177 | state->crtcs[i].state); |
3b24f7d6 | 178 | |
5d943aa6 DV |
179 | state->crtcs[i].ptr = NULL; |
180 | state->crtcs[i].state = NULL; | |
f0b408ee VS |
181 | state->crtcs[i].old_state = NULL; |
182 | state->crtcs[i].new_state = NULL; | |
4364bcb2 LL |
183 | |
184 | if (state->crtcs[i].commit) { | |
185 | drm_crtc_commit_put(state->crtcs[i].commit); | |
186 | state->crtcs[i].commit = NULL; | |
187 | } | |
cc4ceb48 DV |
188 | } |
189 | ||
6f75cea6 | 190 | for (i = 0; i < config->num_total_plane; i++) { |
b8b5342b | 191 | struct drm_plane *plane = state->planes[i].ptr; |
cc4ceb48 DV |
192 | |
193 | if (!plane) | |
194 | continue; | |
195 | ||
196 | plane->funcs->atomic_destroy_state(plane, | |
b8b5342b DV |
197 | state->planes[i].state); |
198 | state->planes[i].ptr = NULL; | |
199 | state->planes[i].state = NULL; | |
f0b408ee VS |
200 | state->planes[i].old_state = NULL; |
201 | state->planes[i].new_state = NULL; | |
cc4ceb48 | 202 | } |
b430c27a PD |
203 | |
204 | for (i = 0; i < state->num_private_objs; i++) { | |
a4370c77 | 205 | struct drm_private_obj *obj = state->private_objs[i].ptr; |
b430c27a | 206 | |
a4370c77 VS |
207 | obj->funcs->atomic_destroy_state(obj, |
208 | state->private_objs[i].state); | |
209 | state->private_objs[i].ptr = NULL; | |
210 | state->private_objs[i].state = NULL; | |
b5cb2e5a VS |
211 | state->private_objs[i].old_state = NULL; |
212 | state->private_objs[i].new_state = NULL; | |
b430c27a PD |
213 | } |
214 | state->num_private_objs = 0; | |
215 | ||
21a01abb ML |
216 | if (state->fake_commit) { |
217 | drm_crtc_commit_put(state->fake_commit); | |
218 | state->fake_commit = NULL; | |
219 | } | |
cc4ceb48 | 220 | } |
036ef573 ML |
221 | EXPORT_SYMBOL(drm_atomic_state_default_clear); |
222 | ||
223 | /** | |
224 | * drm_atomic_state_clear - clear state object | |
225 | * @state: atomic state | |
226 | * | |
227 | * When the w/w mutex algorithm detects a deadlock we need to back off and drop | |
228 | * all locks. So someone else could sneak in and change the current modeset | |
229 | * configuration. Which means that all the state assembled in @state is no | |
230 | * longer an atomic update to the current state, but to some arbitrary earlier | |
d574528a DV |
231 | * state. Which could break assumptions the driver's |
232 | * &drm_mode_config_funcs.atomic_check likely relies on. | |
036ef573 ML |
233 | * |
234 | * Hence we must clear all cached state and completely start over, using this | |
235 | * function. | |
236 | */ | |
237 | void drm_atomic_state_clear(struct drm_atomic_state *state) | |
238 | { | |
239 | struct drm_device *dev = state->dev; | |
240 | struct drm_mode_config *config = &dev->mode_config; | |
241 | ||
242 | if (config->funcs->atomic_state_clear) | |
243 | config->funcs->atomic_state_clear(state); | |
244 | else | |
245 | drm_atomic_state_default_clear(state); | |
246 | } | |
cc4ceb48 DV |
247 | EXPORT_SYMBOL(drm_atomic_state_clear); |
248 | ||
249 | /** | |
0853695c CW |
250 | * __drm_atomic_state_free - free all memory for an atomic state |
251 | * @ref: This atomic state to deallocate | |
cc4ceb48 DV |
252 | * |
253 | * This frees all memory associated with an atomic state, including all the | |
254 | * per-object state for planes, crtcs and connectors. | |
255 | */ | |
0853695c | 256 | void __drm_atomic_state_free(struct kref *ref) |
cc4ceb48 | 257 | { |
0853695c CW |
258 | struct drm_atomic_state *state = container_of(ref, typeof(*state), ref); |
259 | struct drm_mode_config *config = &state->dev->mode_config; | |
036ef573 | 260 | |
cc4ceb48 DV |
261 | drm_atomic_state_clear(state); |
262 | ||
17a38d9c | 263 | DRM_DEBUG_ATOMIC("Freeing atomic state %p\n", state); |
cc4ceb48 | 264 | |
036ef573 ML |
265 | if (config->funcs->atomic_state_free) { |
266 | config->funcs->atomic_state_free(state); | |
267 | } else { | |
268 | drm_atomic_state_default_release(state); | |
269 | kfree(state); | |
270 | } | |
cc4ceb48 | 271 | } |
0853695c | 272 | EXPORT_SYMBOL(__drm_atomic_state_free); |
cc4ceb48 DV |
273 | |
274 | /** | |
275 | * drm_atomic_get_crtc_state - get crtc state | |
276 | * @state: global atomic state object | |
277 | * @crtc: crtc to get state object for | |
278 | * | |
279 | * This function returns the crtc state for the given crtc, allocating it if | |
280 | * needed. It will also grab the relevant crtc lock to make sure that the state | |
281 | * is consistent. | |
282 | * | |
283 | * Returns: | |
284 | * | |
285 | * Either the allocated state or the error code encoded into the pointer. When | |
286 | * the error is EDEADLK then the w/w mutex code has detected a deadlock and the | |
287 | * entire atomic sequence must be restarted. All other errors are fatal. | |
288 | */ | |
289 | struct drm_crtc_state * | |
290 | drm_atomic_get_crtc_state(struct drm_atomic_state *state, | |
291 | struct drm_crtc *crtc) | |
292 | { | |
1b26a5e1 | 293 | int ret, index = drm_crtc_index(crtc); |
cc4ceb48 DV |
294 | struct drm_crtc_state *crtc_state; |
295 | ||
7f4eaa89 ML |
296 | WARN_ON(!state->acquire_ctx); |
297 | ||
1b26a5e1 ML |
298 | crtc_state = drm_atomic_get_existing_crtc_state(state, crtc); |
299 | if (crtc_state) | |
300 | return crtc_state; | |
cc4ceb48 DV |
301 | |
302 | ret = drm_modeset_lock(&crtc->mutex, state->acquire_ctx); | |
303 | if (ret) | |
304 | return ERR_PTR(ret); | |
305 | ||
306 | crtc_state = crtc->funcs->atomic_duplicate_state(crtc); | |
307 | if (!crtc_state) | |
308 | return ERR_PTR(-ENOMEM); | |
309 | ||
5d943aa6 | 310 | state->crtcs[index].state = crtc_state; |
581e49fe ML |
311 | state->crtcs[index].old_state = crtc->state; |
312 | state->crtcs[index].new_state = crtc_state; | |
5d943aa6 | 313 | state->crtcs[index].ptr = crtc; |
cc4ceb48 DV |
314 | crtc_state->state = state; |
315 | ||
fa3ab4c2 VS |
316 | DRM_DEBUG_ATOMIC("Added [CRTC:%d:%s] %p state to %p\n", |
317 | crtc->base.id, crtc->name, crtc_state, state); | |
cc4ceb48 DV |
318 | |
319 | return crtc_state; | |
320 | } | |
321 | EXPORT_SYMBOL(drm_atomic_get_crtc_state); | |
322 | ||
b2432adf VS |
323 | static int drm_atomic_crtc_check(const struct drm_crtc_state *old_crtc_state, |
324 | const struct drm_crtc_state *new_crtc_state) | |
5e743737 | 325 | { |
b2432adf VS |
326 | struct drm_crtc *crtc = new_crtc_state->crtc; |
327 | ||
5e743737 RC |
328 | /* NOTE: we explicitly don't enforce constraints such as primary |
329 | * layer covering entire screen, since that is something we want | |
330 | * to allow (on hw that supports it). For hw that does not, it | |
331 | * should be checked in driver's crtc->atomic_check() vfunc. | |
332 | * | |
333 | * TODO: Add generic modeset state checks once we support those. | |
334 | */ | |
eab3bbef | 335 | |
b2432adf | 336 | if (new_crtc_state->active && !new_crtc_state->enable) { |
fa3ab4c2 VS |
337 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] active without enabled\n", |
338 | crtc->base.id, crtc->name); | |
eab3bbef DV |
339 | return -EINVAL; |
340 | } | |
341 | ||
99cf4a29 DS |
342 | /* The state->enable vs. state->mode_blob checks can be WARN_ON, |
343 | * as this is a kernel-internal detail that userspace should never | |
344 | * be able to trigger. */ | |
345 | if (drm_core_check_feature(crtc->dev, DRIVER_ATOMIC) && | |
b2432adf | 346 | WARN_ON(new_crtc_state->enable && !new_crtc_state->mode_blob)) { |
fa3ab4c2 VS |
347 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] enabled without mode blob\n", |
348 | crtc->base.id, crtc->name); | |
99cf4a29 DS |
349 | return -EINVAL; |
350 | } | |
351 | ||
352 | if (drm_core_check_feature(crtc->dev, DRIVER_ATOMIC) && | |
b2432adf | 353 | WARN_ON(!new_crtc_state->enable && new_crtc_state->mode_blob)) { |
fa3ab4c2 VS |
354 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] disabled with mode blob\n", |
355 | crtc->base.id, crtc->name); | |
99cf4a29 DS |
356 | return -EINVAL; |
357 | } | |
358 | ||
4cba6850 DV |
359 | /* |
360 | * Reject event generation for when a CRTC is off and stays off. | |
361 | * It wouldn't be hard to implement this, but userspace has a track | |
362 | * record of happily burning through 100% cpu (or worse, crash) when the | |
363 | * display pipe is suspended. To avoid all that fun just reject updates | |
364 | * that ask for events since likely that indicates a bug in the | |
365 | * compositor's drawing loop. This is consistent with the vblank IOCTL | |
366 | * and legacy page_flip IOCTL which also reject service on a disabled | |
367 | * pipe. | |
368 | */ | |
b2432adf VS |
369 | if (new_crtc_state->event && |
370 | !new_crtc_state->active && !old_crtc_state->active) { | |
6ac7c548 RK |
371 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] requesting event but off\n", |
372 | crtc->base.id, crtc->name); | |
4cba6850 DV |
373 | return -EINVAL; |
374 | } | |
375 | ||
5e743737 RC |
376 | return 0; |
377 | } | |
378 | ||
fceffb32 RC |
379 | static void drm_atomic_crtc_print_state(struct drm_printer *p, |
380 | const struct drm_crtc_state *state) | |
381 | { | |
382 | struct drm_crtc *crtc = state->crtc; | |
383 | ||
384 | drm_printf(p, "crtc[%u]: %s\n", crtc->base.id, crtc->name); | |
385 | drm_printf(p, "\tenable=%d\n", state->enable); | |
386 | drm_printf(p, "\tactive=%d\n", state->active); | |
1452c25b | 387 | drm_printf(p, "\tself_refresh_active=%d\n", state->self_refresh_active); |
fceffb32 RC |
388 | drm_printf(p, "\tplanes_changed=%d\n", state->planes_changed); |
389 | drm_printf(p, "\tmode_changed=%d\n", state->mode_changed); | |
390 | drm_printf(p, "\tactive_changed=%d\n", state->active_changed); | |
391 | drm_printf(p, "\tconnectors_changed=%d\n", state->connectors_changed); | |
392 | drm_printf(p, "\tcolor_mgmt_changed=%d\n", state->color_mgmt_changed); | |
393 | drm_printf(p, "\tplane_mask=%x\n", state->plane_mask); | |
394 | drm_printf(p, "\tconnector_mask=%x\n", state->connector_mask); | |
395 | drm_printf(p, "\tencoder_mask=%x\n", state->encoder_mask); | |
396 | drm_printf(p, "\tmode: " DRM_MODE_FMT "\n", DRM_MODE_ARG(&state->mode)); | |
397 | ||
398 | if (crtc->funcs->atomic_print_state) | |
399 | crtc->funcs->atomic_print_state(p, state); | |
400 | } | |
401 | ||
935774cd BS |
402 | static int drm_atomic_connector_check(struct drm_connector *connector, |
403 | struct drm_connector_state *state) | |
404 | { | |
405 | struct drm_crtc_state *crtc_state; | |
406 | struct drm_writeback_job *writeback_job = state->writeback_job; | |
47e22ff1 RS |
407 | const struct drm_display_info *info = &connector->display_info; |
408 | ||
409 | state->max_bpc = info->bpc ? info->bpc : 8; | |
410 | if (connector->max_bpc_property) | |
411 | state->max_bpc = min(state->max_bpc, state->max_requested_bpc); | |
935774cd BS |
412 | |
413 | if ((connector->connector_type != DRM_MODE_CONNECTOR_WRITEBACK) || !writeback_job) | |
414 | return 0; | |
415 | ||
416 | if (writeback_job->fb && !state->crtc) { | |
417 | DRM_DEBUG_ATOMIC("[CONNECTOR:%d:%s] framebuffer without CRTC\n", | |
418 | connector->base.id, connector->name); | |
419 | return -EINVAL; | |
420 | } | |
421 | ||
422 | if (state->crtc) | |
423 | crtc_state = drm_atomic_get_existing_crtc_state(state->state, | |
424 | state->crtc); | |
425 | ||
426 | if (writeback_job->fb && !crtc_state->active) { | |
427 | DRM_DEBUG_ATOMIC("[CONNECTOR:%d:%s] has framebuffer, but [CRTC:%d] is off\n", | |
428 | connector->base.id, connector->name, | |
429 | state->crtc->base.id); | |
430 | return -EINVAL; | |
431 | } | |
432 | ||
8581d510 LLATC |
433 | if (!writeback_job->fb) { |
434 | if (writeback_job->out_fence) { | |
435 | DRM_DEBUG_ATOMIC("[CONNECTOR:%d:%s] requesting out-fence without framebuffer\n", | |
436 | connector->base.id, connector->name); | |
437 | return -EINVAL; | |
438 | } | |
439 | ||
440 | drm_writeback_cleanup_job(writeback_job); | |
441 | state->writeback_job = NULL; | |
b13cc8dd BS |
442 | } |
443 | ||
935774cd BS |
444 | return 0; |
445 | } | |
446 | ||
cc4ceb48 DV |
447 | /** |
448 | * drm_atomic_get_plane_state - get plane state | |
449 | * @state: global atomic state object | |
450 | * @plane: plane to get state object for | |
451 | * | |
452 | * This function returns the plane state for the given plane, allocating it if | |
453 | * needed. It will also grab the relevant plane lock to make sure that the state | |
454 | * is consistent. | |
455 | * | |
456 | * Returns: | |
457 | * | |
458 | * Either the allocated state or the error code encoded into the pointer. When | |
459 | * the error is EDEADLK then the w/w mutex code has detected a deadlock and the | |
460 | * entire atomic sequence must be restarted. All other errors are fatal. | |
461 | */ | |
462 | struct drm_plane_state * | |
463 | drm_atomic_get_plane_state(struct drm_atomic_state *state, | |
464 | struct drm_plane *plane) | |
465 | { | |
1b26a5e1 | 466 | int ret, index = drm_plane_index(plane); |
cc4ceb48 DV |
467 | struct drm_plane_state *plane_state; |
468 | ||
7f4eaa89 ML |
469 | WARN_ON(!state->acquire_ctx); |
470 | ||
e00fb856 VS |
471 | /* the legacy pointers should never be set */ |
472 | WARN_ON(plane->fb); | |
473 | WARN_ON(plane->old_fb); | |
474 | WARN_ON(plane->crtc); | |
475 | ||
1b26a5e1 ML |
476 | plane_state = drm_atomic_get_existing_plane_state(state, plane); |
477 | if (plane_state) | |
478 | return plane_state; | |
cc4ceb48 | 479 | |
4d02e2de | 480 | ret = drm_modeset_lock(&plane->mutex, state->acquire_ctx); |
cc4ceb48 DV |
481 | if (ret) |
482 | return ERR_PTR(ret); | |
483 | ||
484 | plane_state = plane->funcs->atomic_duplicate_state(plane); | |
485 | if (!plane_state) | |
486 | return ERR_PTR(-ENOMEM); | |
487 | ||
b8b5342b DV |
488 | state->planes[index].state = plane_state; |
489 | state->planes[index].ptr = plane; | |
581e49fe ML |
490 | state->planes[index].old_state = plane->state; |
491 | state->planes[index].new_state = plane_state; | |
cc4ceb48 DV |
492 | plane_state->state = state; |
493 | ||
9f4c97a2 VS |
494 | DRM_DEBUG_ATOMIC("Added [PLANE:%d:%s] %p state to %p\n", |
495 | plane->base.id, plane->name, plane_state, state); | |
cc4ceb48 DV |
496 | |
497 | if (plane_state->crtc) { | |
498 | struct drm_crtc_state *crtc_state; | |
499 | ||
500 | crtc_state = drm_atomic_get_crtc_state(state, | |
501 | plane_state->crtc); | |
502 | if (IS_ERR(crtc_state)) | |
503 | return ERR_CAST(crtc_state); | |
504 | } | |
505 | ||
506 | return plane_state; | |
507 | } | |
508 | EXPORT_SYMBOL(drm_atomic_get_plane_state); | |
509 | ||
f8aeb41c | 510 | static bool |
d9be05b7 VS |
511 | plane_switching_crtc(const struct drm_plane_state *old_plane_state, |
512 | const struct drm_plane_state *new_plane_state) | |
f8aeb41c | 513 | { |
d9be05b7 | 514 | if (!old_plane_state->crtc || !new_plane_state->crtc) |
f8aeb41c DV |
515 | return false; |
516 | ||
d9be05b7 | 517 | if (old_plane_state->crtc == new_plane_state->crtc) |
f8aeb41c DV |
518 | return false; |
519 | ||
520 | /* This could be refined, but currently there's no helper or driver code | |
521 | * to implement direct switching of active planes nor userspace to take | |
522 | * advantage of more direct plane switching without the intermediate | |
523 | * full OFF state. | |
524 | */ | |
525 | return true; | |
526 | } | |
527 | ||
5e743737 RC |
528 | /** |
529 | * drm_atomic_plane_check - check plane state | |
d9be05b7 VS |
530 | * @old_plane_state: old plane state to check |
531 | * @new_plane_state: new plane state to check | |
5e743737 RC |
532 | * |
533 | * Provides core sanity checks for plane state. | |
534 | * | |
535 | * RETURNS: | |
536 | * Zero on success, error code on failure | |
537 | */ | |
d9be05b7 VS |
538 | static int drm_atomic_plane_check(const struct drm_plane_state *old_plane_state, |
539 | const struct drm_plane_state *new_plane_state) | |
5e743737 | 540 | { |
d9be05b7 VS |
541 | struct drm_plane *plane = new_plane_state->plane; |
542 | struct drm_crtc *crtc = new_plane_state->crtc; | |
543 | const struct drm_framebuffer *fb = new_plane_state->fb; | |
5e743737 | 544 | unsigned int fb_width, fb_height; |
d3b21767 LS |
545 | struct drm_mode_rect *clips; |
546 | uint32_t num_clips; | |
ead8610d | 547 | int ret; |
5e743737 RC |
548 | |
549 | /* either *both* CRTC and FB must be set, or neither */ | |
d9be05b7 | 550 | if (crtc && !fb) { |
b6f690ab VS |
551 | DRM_DEBUG_ATOMIC("[PLANE:%d:%s] CRTC set but no FB\n", |
552 | plane->base.id, plane->name); | |
5e743737 | 553 | return -EINVAL; |
d9be05b7 | 554 | } else if (fb && !crtc) { |
b6f690ab VS |
555 | DRM_DEBUG_ATOMIC("[PLANE:%d:%s] FB set but no CRTC\n", |
556 | plane->base.id, plane->name); | |
5e743737 RC |
557 | return -EINVAL; |
558 | } | |
559 | ||
560 | /* if disabled, we don't care about the rest of the state: */ | |
d9be05b7 | 561 | if (!crtc) |
5e743737 RC |
562 | return 0; |
563 | ||
564 | /* Check whether this plane is usable on this CRTC */ | |
d9be05b7 | 565 | if (!(plane->possible_crtcs & drm_crtc_mask(crtc))) { |
b6f690ab | 566 | DRM_DEBUG_ATOMIC("Invalid [CRTC:%d:%s] for [PLANE:%d:%s]\n", |
d9be05b7 | 567 | crtc->base.id, crtc->name, |
b6f690ab | 568 | plane->base.id, plane->name); |
5e743737 RC |
569 | return -EINVAL; |
570 | } | |
571 | ||
572 | /* Check whether this plane supports the fb pixel format. */ | |
d9be05b7 VS |
573 | ret = drm_plane_check_pixel_format(plane, fb->format->format, |
574 | fb->modifier); | |
ead8610d | 575 | if (ret) { |
b3c11ac2 | 576 | struct drm_format_name_buf format_name; |
b6f690ab VS |
577 | DRM_DEBUG_ATOMIC("[PLANE:%d:%s] invalid pixel format %s, modifier 0x%llx\n", |
578 | plane->base.id, plane->name, | |
d9be05b7 | 579 | drm_get_format_name(fb->format->format, |
23163a7d | 580 | &format_name), |
d9be05b7 | 581 | fb->modifier); |
ead8610d | 582 | return ret; |
5e743737 RC |
583 | } |
584 | ||
585 | /* Give drivers some help against integer overflows */ | |
d9be05b7 VS |
586 | if (new_plane_state->crtc_w > INT_MAX || |
587 | new_plane_state->crtc_x > INT_MAX - (int32_t) new_plane_state->crtc_w || | |
588 | new_plane_state->crtc_h > INT_MAX || | |
589 | new_plane_state->crtc_y > INT_MAX - (int32_t) new_plane_state->crtc_h) { | |
b6f690ab VS |
590 | DRM_DEBUG_ATOMIC("[PLANE:%d:%s] invalid CRTC coordinates %ux%u+%d+%d\n", |
591 | plane->base.id, plane->name, | |
d9be05b7 VS |
592 | new_plane_state->crtc_w, new_plane_state->crtc_h, |
593 | new_plane_state->crtc_x, new_plane_state->crtc_y); | |
5e743737 RC |
594 | return -ERANGE; |
595 | } | |
596 | ||
d9be05b7 VS |
597 | fb_width = fb->width << 16; |
598 | fb_height = fb->height << 16; | |
5e743737 RC |
599 | |
600 | /* Make sure source coordinates are inside the fb. */ | |
d9be05b7 VS |
601 | if (new_plane_state->src_w > fb_width || |
602 | new_plane_state->src_x > fb_width - new_plane_state->src_w || | |
603 | new_plane_state->src_h > fb_height || | |
604 | new_plane_state->src_y > fb_height - new_plane_state->src_h) { | |
b6f690ab | 605 | DRM_DEBUG_ATOMIC("[PLANE:%d:%s] invalid source coordinates " |
0338f0d0 | 606 | "%u.%06ux%u.%06u+%u.%06u+%u.%06u (fb %ux%u)\n", |
b6f690ab | 607 | plane->base.id, plane->name, |
d9be05b7 VS |
608 | new_plane_state->src_w >> 16, |
609 | ((new_plane_state->src_w & 0xffff) * 15625) >> 10, | |
610 | new_plane_state->src_h >> 16, | |
611 | ((new_plane_state->src_h & 0xffff) * 15625) >> 10, | |
612 | new_plane_state->src_x >> 16, | |
613 | ((new_plane_state->src_x & 0xffff) * 15625) >> 10, | |
614 | new_plane_state->src_y >> 16, | |
615 | ((new_plane_state->src_y & 0xffff) * 15625) >> 10, | |
616 | fb->width, fb->height); | |
5e743737 RC |
617 | return -ENOSPC; |
618 | } | |
619 | ||
d3b21767 LS |
620 | clips = drm_plane_get_damage_clips(new_plane_state); |
621 | num_clips = drm_plane_get_damage_clips_count(new_plane_state); | |
622 | ||
623 | /* Make sure damage clips are valid and inside the fb. */ | |
624 | while (num_clips > 0) { | |
625 | if (clips->x1 >= clips->x2 || | |
626 | clips->y1 >= clips->y2 || | |
627 | clips->x1 < 0 || | |
628 | clips->y1 < 0 || | |
629 | clips->x2 > fb_width || | |
630 | clips->y2 > fb_height) { | |
631 | DRM_DEBUG_ATOMIC("[PLANE:%d:%s] invalid damage clip %d %d %d %d\n", | |
632 | plane->base.id, plane->name, clips->x1, | |
633 | clips->y1, clips->x2, clips->y2); | |
634 | return -EINVAL; | |
635 | } | |
636 | clips++; | |
637 | num_clips--; | |
638 | } | |
639 | ||
d9be05b7 | 640 | if (plane_switching_crtc(old_plane_state, new_plane_state)) { |
9f4c97a2 VS |
641 | DRM_DEBUG_ATOMIC("[PLANE:%d:%s] switching CRTC directly\n", |
642 | plane->base.id, plane->name); | |
f8aeb41c DV |
643 | return -EINVAL; |
644 | } | |
645 | ||
5e743737 RC |
646 | return 0; |
647 | } | |
648 | ||
fceffb32 RC |
649 | static void drm_atomic_plane_print_state(struct drm_printer *p, |
650 | const struct drm_plane_state *state) | |
651 | { | |
652 | struct drm_plane *plane = state->plane; | |
653 | struct drm_rect src = drm_plane_state_src(state); | |
654 | struct drm_rect dest = drm_plane_state_dest(state); | |
655 | ||
656 | drm_printf(p, "plane[%u]: %s\n", plane->base.id, plane->name); | |
657 | drm_printf(p, "\tcrtc=%s\n", state->crtc ? state->crtc->name : "(null)"); | |
658 | drm_printf(p, "\tfb=%u\n", state->fb ? state->fb->base.id : 0); | |
f02b604b NT |
659 | if (state->fb) |
660 | drm_framebuffer_print_info(p, 2, state->fb); | |
fceffb32 RC |
661 | drm_printf(p, "\tcrtc-pos=" DRM_RECT_FMT "\n", DRM_RECT_ARG(&dest)); |
662 | drm_printf(p, "\tsrc-pos=" DRM_RECT_FP_FMT "\n", DRM_RECT_FP_ARG(&src)); | |
663 | drm_printf(p, "\trotation=%x\n", state->rotation); | |
f8878bb2 | 664 | drm_printf(p, "\tnormalized-zpos=%x\n", state->normalized_zpos); |
56dbbaff VS |
665 | drm_printf(p, "\tcolor-encoding=%s\n", |
666 | drm_get_color_encoding_name(state->color_encoding)); | |
667 | drm_printf(p, "\tcolor-range=%s\n", | |
668 | drm_get_color_range_name(state->color_range)); | |
fceffb32 RC |
669 | |
670 | if (plane->funcs->atomic_print_state) | |
671 | plane->funcs->atomic_print_state(p, state); | |
672 | } | |
673 | ||
da6c0596 DV |
674 | /** |
675 | * DOC: handling driver private state | |
676 | * | |
677 | * Very often the DRM objects exposed to userspace in the atomic modeset api | |
678 | * (&drm_connector, &drm_crtc and &drm_plane) do not map neatly to the | |
679 | * underlying hardware. Especially for any kind of shared resources (e.g. shared | |
680 | * clocks, scaler units, bandwidth and fifo limits shared among a group of | |
681 | * planes or CRTCs, and so on) it makes sense to model these as independent | |
682 | * objects. Drivers then need to do similar state tracking and commit ordering for | |
683 | * such private (since not exposed to userpace) objects as the atomic core and | |
684 | * helpers already provide for connectors, planes and CRTCs. | |
685 | * | |
686 | * To make this easier on drivers the atomic core provides some support to track | |
687 | * driver private state objects using struct &drm_private_obj, with the | |
688 | * associated state struct &drm_private_state. | |
689 | * | |
690 | * Similar to userspace-exposed objects, private state structures can be | |
691 | * acquired by calling drm_atomic_get_private_obj_state(). Since this function | |
692 | * does not take care of locking, drivers should wrap it for each type of | |
693 | * private state object they have with the required call to drm_modeset_lock() | |
694 | * for the corresponding &drm_modeset_lock. | |
695 | * | |
696 | * All private state structures contained in a &drm_atomic_state update can be | |
697 | * iterated using for_each_oldnew_private_obj_in_state(), | |
698 | * for_each_new_private_obj_in_state() and for_each_old_private_obj_in_state(). | |
699 | * Drivers are recommended to wrap these for each type of driver private state | |
700 | * object they have, filtering on &drm_private_obj.funcs using for_each_if(), at | |
701 | * least if they want to iterate over all objects of a given type. | |
702 | * | |
703 | * An earlier way to handle driver private state was by subclassing struct | |
704 | * &drm_atomic_state. But since that encourages non-standard ways to implement | |
705 | * the check/commit split atomic requires (by using e.g. "check and rollback or | |
706 | * commit instead" of "duplicate state, check, then either commit or release | |
707 | * duplicated state) it is deprecated in favour of using &drm_private_state. | |
708 | */ | |
709 | ||
a4370c77 VS |
710 | /** |
711 | * drm_atomic_private_obj_init - initialize private object | |
b962a120 | 712 | * @dev: DRM device this object will be attached to |
a4370c77 VS |
713 | * @obj: private object |
714 | * @state: initial private object state | |
715 | * @funcs: pointer to the struct of function pointers that identify the object | |
716 | * type | |
717 | * | |
718 | * Initialize the private object, which can be embedded into any | |
719 | * driver private object that needs its own atomic state. | |
720 | */ | |
721 | void | |
b962a120 RC |
722 | drm_atomic_private_obj_init(struct drm_device *dev, |
723 | struct drm_private_obj *obj, | |
a4370c77 VS |
724 | struct drm_private_state *state, |
725 | const struct drm_private_state_funcs *funcs) | |
726 | { | |
727 | memset(obj, 0, sizeof(*obj)); | |
728 | ||
b962a120 RC |
729 | drm_modeset_lock_init(&obj->lock); |
730 | ||
a4370c77 VS |
731 | obj->state = state; |
732 | obj->funcs = funcs; | |
b962a120 | 733 | list_add_tail(&obj->head, &dev->mode_config.privobj_list); |
a4370c77 VS |
734 | } |
735 | EXPORT_SYMBOL(drm_atomic_private_obj_init); | |
736 | ||
737 | /** | |
738 | * drm_atomic_private_obj_fini - finalize private object | |
739 | * @obj: private object | |
740 | * | |
741 | * Finalize the private object. | |
742 | */ | |
743 | void | |
744 | drm_atomic_private_obj_fini(struct drm_private_obj *obj) | |
745 | { | |
b962a120 | 746 | list_del(&obj->head); |
a4370c77 | 747 | obj->funcs->atomic_destroy_state(obj, obj->state); |
b962a120 | 748 | drm_modeset_lock_fini(&obj->lock); |
a4370c77 VS |
749 | } |
750 | EXPORT_SYMBOL(drm_atomic_private_obj_fini); | |
751 | ||
b430c27a PD |
752 | /** |
753 | * drm_atomic_get_private_obj_state - get private object state | |
754 | * @state: global atomic state | |
755 | * @obj: private object to get the state for | |
b430c27a PD |
756 | * |
757 | * This function returns the private object state for the given private object, | |
b962a120 RC |
758 | * allocating the state if needed. It will also grab the relevant private |
759 | * object lock to make sure that the state is consistent. | |
b430c27a PD |
760 | * |
761 | * RETURNS: | |
762 | * | |
763 | * Either the allocated state or the error code encoded into a pointer. | |
764 | */ | |
a4370c77 VS |
765 | struct drm_private_state * |
766 | drm_atomic_get_private_obj_state(struct drm_atomic_state *state, | |
767 | struct drm_private_obj *obj) | |
b430c27a | 768 | { |
b962a120 | 769 | int index, num_objs, i, ret; |
b430c27a PD |
770 | size_t size; |
771 | struct __drm_private_objs_state *arr; | |
a4370c77 | 772 | struct drm_private_state *obj_state; |
b430c27a PD |
773 | |
774 | for (i = 0; i < state->num_private_objs; i++) | |
a4370c77 VS |
775 | if (obj == state->private_objs[i].ptr) |
776 | return state->private_objs[i].state; | |
b430c27a | 777 | |
b962a120 RC |
778 | ret = drm_modeset_lock(&obj->lock, state->acquire_ctx); |
779 | if (ret) | |
780 | return ERR_PTR(ret); | |
781 | ||
b430c27a PD |
782 | num_objs = state->num_private_objs + 1; |
783 | size = sizeof(*state->private_objs) * num_objs; | |
784 | arr = krealloc(state->private_objs, size, GFP_KERNEL); | |
785 | if (!arr) | |
786 | return ERR_PTR(-ENOMEM); | |
787 | ||
788 | state->private_objs = arr; | |
789 | index = state->num_private_objs; | |
790 | memset(&state->private_objs[index], 0, sizeof(*state->private_objs)); | |
791 | ||
a4370c77 VS |
792 | obj_state = obj->funcs->atomic_duplicate_state(obj); |
793 | if (!obj_state) | |
b430c27a PD |
794 | return ERR_PTR(-ENOMEM); |
795 | ||
a4370c77 VS |
796 | state->private_objs[index].state = obj_state; |
797 | state->private_objs[index].old_state = obj->state; | |
798 | state->private_objs[index].new_state = obj_state; | |
799 | state->private_objs[index].ptr = obj; | |
e89ea355 | 800 | obj_state->state = state; |
a4370c77 | 801 | |
b430c27a PD |
802 | state->num_private_objs = num_objs; |
803 | ||
a4370c77 VS |
804 | DRM_DEBUG_ATOMIC("Added new private object %p state %p to %p\n", |
805 | obj, obj_state, state); | |
b430c27a | 806 | |
a4370c77 | 807 | return obj_state; |
b430c27a PD |
808 | } |
809 | EXPORT_SYMBOL(drm_atomic_get_private_obj_state); | |
810 | ||
9801a7ea ATC |
811 | /** |
812 | * drm_atomic_get_old_private_obj_state | |
813 | * @state: global atomic state object | |
814 | * @obj: private_obj to grab | |
815 | * | |
816 | * This function returns the old private object state for the given private_obj, | |
817 | * or NULL if the private_obj is not part of the global atomic state. | |
818 | */ | |
819 | struct drm_private_state * | |
820 | drm_atomic_get_old_private_obj_state(struct drm_atomic_state *state, | |
821 | struct drm_private_obj *obj) | |
822 | { | |
823 | int i; | |
824 | ||
825 | for (i = 0; i < state->num_private_objs; i++) | |
826 | if (obj == state->private_objs[i].ptr) | |
827 | return state->private_objs[i].old_state; | |
828 | ||
829 | return NULL; | |
830 | } | |
831 | EXPORT_SYMBOL(drm_atomic_get_old_private_obj_state); | |
832 | ||
833 | /** | |
834 | * drm_atomic_get_new_private_obj_state | |
835 | * @state: global atomic state object | |
836 | * @obj: private_obj to grab | |
837 | * | |
838 | * This function returns the new private object state for the given private_obj, | |
839 | * or NULL if the private_obj is not part of the global atomic state. | |
840 | */ | |
841 | struct drm_private_state * | |
842 | drm_atomic_get_new_private_obj_state(struct drm_atomic_state *state, | |
843 | struct drm_private_obj *obj) | |
844 | { | |
845 | int i; | |
846 | ||
847 | for (i = 0; i < state->num_private_objs; i++) | |
848 | if (obj == state->private_objs[i].ptr) | |
849 | return state->private_objs[i].new_state; | |
850 | ||
851 | return NULL; | |
852 | } | |
853 | EXPORT_SYMBOL(drm_atomic_get_new_private_obj_state); | |
854 | ||
1b27fbdd LP |
855 | /** |
856 | * drm_atomic_get_old_connector_for_encoder - Get old connector for an encoder | |
857 | * @state: Atomic state | |
858 | * @encoder: The encoder to fetch the connector state for | |
859 | * | |
860 | * This function finds and returns the connector that was connected to @encoder | |
861 | * as specified by the @state. | |
862 | * | |
863 | * If there is no connector in @state which previously had @encoder connected to | |
864 | * it, this function will return NULL. While this may seem like an invalid use | |
865 | * case, it is sometimes useful to differentiate commits which had no prior | |
866 | * connectors attached to @encoder vs ones that did (and to inspect their | |
867 | * state). This is especially true in enable hooks because the pipeline has | |
868 | * changed. | |
869 | * | |
870 | * Returns: The old connector connected to @encoder, or NULL if the encoder is | |
871 | * not connected. | |
872 | */ | |
873 | struct drm_connector * | |
874 | drm_atomic_get_old_connector_for_encoder(struct drm_atomic_state *state, | |
875 | struct drm_encoder *encoder) | |
876 | { | |
877 | struct drm_connector_state *conn_state; | |
878 | struct drm_connector *connector; | |
879 | unsigned int i; | |
880 | ||
881 | for_each_old_connector_in_state(state, connector, conn_state, i) { | |
882 | if (conn_state->best_encoder == encoder) | |
883 | return connector; | |
884 | } | |
885 | ||
886 | return NULL; | |
887 | } | |
888 | EXPORT_SYMBOL(drm_atomic_get_old_connector_for_encoder); | |
889 | ||
890 | /** | |
891 | * drm_atomic_get_new_connector_for_encoder - Get new connector for an encoder | |
892 | * @state: Atomic state | |
893 | * @encoder: The encoder to fetch the connector state for | |
894 | * | |
895 | * This function finds and returns the connector that will be connected to | |
896 | * @encoder as specified by the @state. | |
897 | * | |
898 | * If there is no connector in @state which will have @encoder connected to it, | |
899 | * this function will return NULL. While this may seem like an invalid use case, | |
900 | * it is sometimes useful to differentiate commits which have no connectors | |
901 | * attached to @encoder vs ones that do (and to inspect their state). This is | |
902 | * especially true in disable hooks because the pipeline will change. | |
903 | * | |
904 | * Returns: The new connector connected to @encoder, or NULL if the encoder is | |
905 | * not connected. | |
906 | */ | |
907 | struct drm_connector * | |
908 | drm_atomic_get_new_connector_for_encoder(struct drm_atomic_state *state, | |
909 | struct drm_encoder *encoder) | |
910 | { | |
911 | struct drm_connector_state *conn_state; | |
912 | struct drm_connector *connector; | |
913 | unsigned int i; | |
914 | ||
915 | for_each_new_connector_in_state(state, connector, conn_state, i) { | |
916 | if (conn_state->best_encoder == encoder) | |
917 | return connector; | |
918 | } | |
919 | ||
920 | return NULL; | |
921 | } | |
922 | EXPORT_SYMBOL(drm_atomic_get_new_connector_for_encoder); | |
923 | ||
cc4ceb48 DV |
924 | /** |
925 | * drm_atomic_get_connector_state - get connector state | |
926 | * @state: global atomic state object | |
927 | * @connector: connector to get state object for | |
928 | * | |
929 | * This function returns the connector state for the given connector, | |
930 | * allocating it if needed. It will also grab the relevant connector lock to | |
931 | * make sure that the state is consistent. | |
932 | * | |
933 | * Returns: | |
934 | * | |
935 | * Either the allocated state or the error code encoded into the pointer. When | |
936 | * the error is EDEADLK then the w/w mutex code has detected a deadlock and the | |
937 | * entire atomic sequence must be restarted. All other errors are fatal. | |
938 | */ | |
939 | struct drm_connector_state * | |
940 | drm_atomic_get_connector_state(struct drm_atomic_state *state, | |
941 | struct drm_connector *connector) | |
942 | { | |
943 | int ret, index; | |
944 | struct drm_mode_config *config = &connector->dev->mode_config; | |
945 | struct drm_connector_state *connector_state; | |
946 | ||
7f4eaa89 ML |
947 | WARN_ON(!state->acquire_ctx); |
948 | ||
c7eb76f4 DV |
949 | ret = drm_modeset_lock(&config->connection_mutex, state->acquire_ctx); |
950 | if (ret) | |
951 | return ERR_PTR(ret); | |
952 | ||
cc4ceb48 DV |
953 | index = drm_connector_index(connector); |
954 | ||
f52b69f1 | 955 | if (index >= state->num_connector) { |
63e83c1d | 956 | struct __drm_connnectors_state *c; |
5fff80bb ML |
957 | int alloc = max(index + 1, config->num_connector); |
958 | ||
959 | c = krealloc(state->connectors, alloc * sizeof(*state->connectors), GFP_KERNEL); | |
960 | if (!c) | |
961 | return ERR_PTR(-ENOMEM); | |
962 | ||
963 | state->connectors = c; | |
964 | memset(&state->connectors[state->num_connector], 0, | |
965 | sizeof(*state->connectors) * (alloc - state->num_connector)); | |
966 | ||
5fff80bb | 967 | state->num_connector = alloc; |
f52b69f1 DV |
968 | } |
969 | ||
63e83c1d DV |
970 | if (state->connectors[index].state) |
971 | return state->connectors[index].state; | |
cc4ceb48 | 972 | |
cc4ceb48 DV |
973 | connector_state = connector->funcs->atomic_duplicate_state(connector); |
974 | if (!connector_state) | |
975 | return ERR_PTR(-ENOMEM); | |
976 | ||
ad093607 | 977 | drm_connector_get(connector); |
63e83c1d | 978 | state->connectors[index].state = connector_state; |
581e49fe ML |
979 | state->connectors[index].old_state = connector->state; |
980 | state->connectors[index].new_state = connector_state; | |
63e83c1d | 981 | state->connectors[index].ptr = connector; |
cc4ceb48 DV |
982 | connector_state->state = state; |
983 | ||
6ac7c548 RK |
984 | DRM_DEBUG_ATOMIC("Added [CONNECTOR:%d:%s] %p state to %p\n", |
985 | connector->base.id, connector->name, | |
986 | connector_state, state); | |
cc4ceb48 DV |
987 | |
988 | if (connector_state->crtc) { | |
989 | struct drm_crtc_state *crtc_state; | |
990 | ||
991 | crtc_state = drm_atomic_get_crtc_state(state, | |
992 | connector_state->crtc); | |
993 | if (IS_ERR(crtc_state)) | |
994 | return ERR_CAST(crtc_state); | |
995 | } | |
996 | ||
997 | return connector_state; | |
998 | } | |
999 | EXPORT_SYMBOL(drm_atomic_get_connector_state); | |
1000 | ||
fceffb32 RC |
1001 | static void drm_atomic_connector_print_state(struct drm_printer *p, |
1002 | const struct drm_connector_state *state) | |
1003 | { | |
1004 | struct drm_connector *connector = state->connector; | |
1005 | ||
1006 | drm_printf(p, "connector[%u]: %s\n", connector->base.id, connector->name); | |
1007 | drm_printf(p, "\tcrtc=%s\n", state->crtc ? state->crtc->name : "(null)"); | |
1452c25b | 1008 | drm_printf(p, "\tself_refresh_aware=%d\n", state->self_refresh_aware); |
fceffb32 | 1009 | |
8cbc5caf BS |
1010 | if (connector->connector_type == DRM_MODE_CONNECTOR_WRITEBACK) |
1011 | if (state->writeback_job && state->writeback_job->fb) | |
1012 | drm_printf(p, "\tfb=%d\n", state->writeback_job->fb->base.id); | |
1013 | ||
fceffb32 RC |
1014 | if (connector->funcs->atomic_print_state) |
1015 | connector->funcs->atomic_print_state(p, state); | |
1016 | } | |
1017 | ||
cc4ceb48 DV |
1018 | /** |
1019 | * drm_atomic_add_affected_connectors - add connectors for crtc | |
1020 | * @state: atomic state | |
1021 | * @crtc: DRM crtc | |
1022 | * | |
1023 | * This function walks the current configuration and adds all connectors | |
1024 | * currently using @crtc to the atomic configuration @state. Note that this | |
1025 | * function must acquire the connection mutex. This can potentially cause | |
1026 | * unneeded seralization if the update is just for the planes on one crtc. Hence | |
1027 | * drivers and helpers should only call this when really needed (e.g. when a | |
1028 | * full modeset needs to happen due to some change). | |
1029 | * | |
1030 | * Returns: | |
1031 | * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK | |
1032 | * then the w/w mutex code has detected a deadlock and the entire atomic | |
1033 | * sequence must be restarted. All other errors are fatal. | |
1034 | */ | |
1035 | int | |
1036 | drm_atomic_add_affected_connectors(struct drm_atomic_state *state, | |
1037 | struct drm_crtc *crtc) | |
1038 | { | |
1039 | struct drm_mode_config *config = &state->dev->mode_config; | |
1040 | struct drm_connector *connector; | |
1041 | struct drm_connector_state *conn_state; | |
613051da | 1042 | struct drm_connector_list_iter conn_iter; |
5351bbdd | 1043 | struct drm_crtc_state *crtc_state; |
cc4ceb48 DV |
1044 | int ret; |
1045 | ||
5351bbdd ML |
1046 | crtc_state = drm_atomic_get_crtc_state(state, crtc); |
1047 | if (IS_ERR(crtc_state)) | |
1048 | return PTR_ERR(crtc_state); | |
1049 | ||
cc4ceb48 DV |
1050 | ret = drm_modeset_lock(&config->connection_mutex, state->acquire_ctx); |
1051 | if (ret) | |
1052 | return ret; | |
1053 | ||
fa3ab4c2 VS |
1054 | DRM_DEBUG_ATOMIC("Adding all current connectors for [CRTC:%d:%s] to %p\n", |
1055 | crtc->base.id, crtc->name, state); | |
cc4ceb48 DV |
1056 | |
1057 | /* | |
5351bbdd ML |
1058 | * Changed connectors are already in @state, so only need to look |
1059 | * at the connector_mask in crtc_state. | |
cc4ceb48 | 1060 | */ |
b982dab1 | 1061 | drm_connector_list_iter_begin(state->dev, &conn_iter); |
613051da | 1062 | drm_for_each_connector_iter(connector, &conn_iter) { |
73705732 | 1063 | if (!(crtc_state->connector_mask & drm_connector_mask(connector))) |
cc4ceb48 DV |
1064 | continue; |
1065 | ||
1066 | conn_state = drm_atomic_get_connector_state(state, connector); | |
613051da | 1067 | if (IS_ERR(conn_state)) { |
b982dab1 | 1068 | drm_connector_list_iter_end(&conn_iter); |
cc4ceb48 | 1069 | return PTR_ERR(conn_state); |
613051da | 1070 | } |
cc4ceb48 | 1071 | } |
b982dab1 | 1072 | drm_connector_list_iter_end(&conn_iter); |
cc4ceb48 DV |
1073 | |
1074 | return 0; | |
1075 | } | |
1076 | EXPORT_SYMBOL(drm_atomic_add_affected_connectors); | |
1077 | ||
e01e9f75 ML |
1078 | /** |
1079 | * drm_atomic_add_affected_planes - add planes for crtc | |
1080 | * @state: atomic state | |
1081 | * @crtc: DRM crtc | |
1082 | * | |
1083 | * This function walks the current configuration and adds all planes | |
1084 | * currently used by @crtc to the atomic configuration @state. This is useful | |
1085 | * when an atomic commit also needs to check all currently enabled plane on | |
1086 | * @crtc, e.g. when changing the mode. It's also useful when re-enabling a CRTC | |
1087 | * to avoid special code to force-enable all planes. | |
1088 | * | |
1089 | * Since acquiring a plane state will always also acquire the w/w mutex of the | |
1090 | * current CRTC for that plane (if there is any) adding all the plane states for | |
1091 | * a CRTC will not reduce parallism of atomic updates. | |
1092 | * | |
1093 | * Returns: | |
1094 | * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK | |
1095 | * then the w/w mutex code has detected a deadlock and the entire atomic | |
1096 | * sequence must be restarted. All other errors are fatal. | |
1097 | */ | |
1098 | int | |
1099 | drm_atomic_add_affected_planes(struct drm_atomic_state *state, | |
1100 | struct drm_crtc *crtc) | |
1101 | { | |
534903d6 VS |
1102 | const struct drm_crtc_state *old_crtc_state = |
1103 | drm_atomic_get_old_crtc_state(state, crtc); | |
e01e9f75 ML |
1104 | struct drm_plane *plane; |
1105 | ||
b4d93679 | 1106 | WARN_ON(!drm_atomic_get_new_crtc_state(state, crtc)); |
e01e9f75 | 1107 | |
b6f690ab VS |
1108 | DRM_DEBUG_ATOMIC("Adding all current planes for [CRTC:%d:%s] to %p\n", |
1109 | crtc->base.id, crtc->name, state); | |
1110 | ||
534903d6 | 1111 | drm_for_each_plane_mask(plane, state->dev, old_crtc_state->plane_mask) { |
e01e9f75 ML |
1112 | struct drm_plane_state *plane_state = |
1113 | drm_atomic_get_plane_state(state, plane); | |
1114 | ||
1115 | if (IS_ERR(plane_state)) | |
1116 | return PTR_ERR(plane_state); | |
1117 | } | |
1118 | return 0; | |
1119 | } | |
1120 | EXPORT_SYMBOL(drm_atomic_add_affected_planes); | |
1121 | ||
cc4ceb48 DV |
1122 | /** |
1123 | * drm_atomic_check_only - check whether a given config would work | |
1124 | * @state: atomic configuration to check | |
1125 | * | |
1126 | * Note that this function can return -EDEADLK if the driver needed to acquire | |
1127 | * more locks but encountered a deadlock. The caller must then do the usual w/w | |
1128 | * backoff dance and restart. All other errors are fatal. | |
1129 | * | |
1130 | * Returns: | |
1131 | * 0 on success, negative error code on failure. | |
1132 | */ | |
1133 | int drm_atomic_check_only(struct drm_atomic_state *state) | |
1134 | { | |
5e743737 RC |
1135 | struct drm_device *dev = state->dev; |
1136 | struct drm_mode_config *config = &dev->mode_config; | |
df63b999 | 1137 | struct drm_plane *plane; |
d9be05b7 VS |
1138 | struct drm_plane_state *old_plane_state; |
1139 | struct drm_plane_state *new_plane_state; | |
df63b999 | 1140 | struct drm_crtc *crtc; |
b2432adf VS |
1141 | struct drm_crtc_state *old_crtc_state; |
1142 | struct drm_crtc_state *new_crtc_state; | |
935774cd BS |
1143 | struct drm_connector *conn; |
1144 | struct drm_connector_state *conn_state; | |
5e743737 | 1145 | int i, ret = 0; |
cc4ceb48 | 1146 | |
17a38d9c | 1147 | DRM_DEBUG_ATOMIC("checking %p\n", state); |
cc4ceb48 | 1148 | |
d9be05b7 VS |
1149 | for_each_oldnew_plane_in_state(state, plane, old_plane_state, new_plane_state, i) { |
1150 | ret = drm_atomic_plane_check(old_plane_state, new_plane_state); | |
5e743737 | 1151 | if (ret) { |
9f4c97a2 VS |
1152 | DRM_DEBUG_ATOMIC("[PLANE:%d:%s] atomic core check failed\n", |
1153 | plane->base.id, plane->name); | |
5e743737 RC |
1154 | return ret; |
1155 | } | |
1156 | } | |
1157 | ||
b2432adf VS |
1158 | for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) { |
1159 | ret = drm_atomic_crtc_check(old_crtc_state, new_crtc_state); | |
5e743737 | 1160 | if (ret) { |
fa3ab4c2 VS |
1161 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] atomic core check failed\n", |
1162 | crtc->base.id, crtc->name); | |
5e743737 RC |
1163 | return ret; |
1164 | } | |
1165 | } | |
1166 | ||
935774cd BS |
1167 | for_each_new_connector_in_state(state, conn, conn_state, i) { |
1168 | ret = drm_atomic_connector_check(conn, conn_state); | |
1169 | if (ret) { | |
1170 | DRM_DEBUG_ATOMIC("[CONNECTOR:%d:%s] atomic core check failed\n", | |
1171 | conn->base.id, conn->name); | |
1172 | return ret; | |
1173 | } | |
1174 | } | |
1175 | ||
14d4e522 | 1176 | if (config->funcs->atomic_check) { |
5e743737 RC |
1177 | ret = config->funcs->atomic_check(state->dev, state); |
1178 | ||
14d4e522 LP |
1179 | if (ret) { |
1180 | DRM_DEBUG_ATOMIC("atomic driver check for %p failed: %d\n", | |
1181 | state, ret); | |
1182 | return ret; | |
1183 | } | |
1184 | } | |
a0ffc51e | 1185 | |
d34f20d6 | 1186 | if (!state->allow_modeset) { |
b2432adf VS |
1187 | for_each_new_crtc_in_state(state, crtc, new_crtc_state, i) { |
1188 | if (drm_atomic_crtc_needs_modeset(new_crtc_state)) { | |
fa3ab4c2 VS |
1189 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] requires full modeset\n", |
1190 | crtc->base.id, crtc->name); | |
d34f20d6 RC |
1191 | return -EINVAL; |
1192 | } | |
1193 | } | |
1194 | } | |
1195 | ||
a0ffc51e | 1196 | return 0; |
cc4ceb48 DV |
1197 | } |
1198 | EXPORT_SYMBOL(drm_atomic_check_only); | |
1199 | ||
1200 | /** | |
1201 | * drm_atomic_commit - commit configuration atomically | |
1202 | * @state: atomic configuration to check | |
1203 | * | |
1204 | * Note that this function can return -EDEADLK if the driver needed to acquire | |
1205 | * more locks but encountered a deadlock. The caller must then do the usual w/w | |
1206 | * backoff dance and restart. All other errors are fatal. | |
1207 | * | |
76fede2f ML |
1208 | * This function will take its own reference on @state. |
1209 | * Callers should always release their reference with drm_atomic_state_put(). | |
cc4ceb48 DV |
1210 | * |
1211 | * Returns: | |
1212 | * 0 on success, negative error code on failure. | |
1213 | */ | |
1214 | int drm_atomic_commit(struct drm_atomic_state *state) | |
1215 | { | |
1216 | struct drm_mode_config *config = &state->dev->mode_config; | |
1217 | int ret; | |
1218 | ||
1219 | ret = drm_atomic_check_only(state); | |
1220 | if (ret) | |
1221 | return ret; | |
1222 | ||
a0752d4a | 1223 | DRM_DEBUG_ATOMIC("committing %p\n", state); |
cc4ceb48 DV |
1224 | |
1225 | return config->funcs->atomic_commit(state->dev, state, false); | |
1226 | } | |
1227 | EXPORT_SYMBOL(drm_atomic_commit); | |
1228 | ||
1229 | /** | |
d574528a | 1230 | * drm_atomic_nonblocking_commit - atomic nonblocking commit |
cc4ceb48 DV |
1231 | * @state: atomic configuration to check |
1232 | * | |
1233 | * Note that this function can return -EDEADLK if the driver needed to acquire | |
1234 | * more locks but encountered a deadlock. The caller must then do the usual w/w | |
1235 | * backoff dance and restart. All other errors are fatal. | |
1236 | * | |
76fede2f ML |
1237 | * This function will take its own reference on @state. |
1238 | * Callers should always release their reference with drm_atomic_state_put(). | |
cc4ceb48 DV |
1239 | * |
1240 | * Returns: | |
1241 | * 0 on success, negative error code on failure. | |
1242 | */ | |
b837ba0a | 1243 | int drm_atomic_nonblocking_commit(struct drm_atomic_state *state) |
cc4ceb48 DV |
1244 | { |
1245 | struct drm_mode_config *config = &state->dev->mode_config; | |
1246 | int ret; | |
1247 | ||
1248 | ret = drm_atomic_check_only(state); | |
1249 | if (ret) | |
1250 | return ret; | |
1251 | ||
a0752d4a | 1252 | DRM_DEBUG_ATOMIC("committing %p nonblocking\n", state); |
cc4ceb48 DV |
1253 | |
1254 | return config->funcs->atomic_commit(state->dev, state, true); | |
1255 | } | |
b837ba0a | 1256 | EXPORT_SYMBOL(drm_atomic_nonblocking_commit); |
d34f20d6 | 1257 | |
df737895 NT |
1258 | /* just used from drm-client and atomic-helper: */ |
1259 | int __drm_atomic_helper_disable_plane(struct drm_plane *plane, | |
1260 | struct drm_plane_state *plane_state) | |
1261 | { | |
1262 | int ret; | |
1263 | ||
1264 | ret = drm_atomic_set_crtc_for_plane(plane_state, NULL); | |
1265 | if (ret != 0) | |
1266 | return ret; | |
1267 | ||
1268 | drm_atomic_set_fb_for_plane(plane_state, NULL); | |
1269 | plane_state->crtc_x = 0; | |
1270 | plane_state->crtc_y = 0; | |
1271 | plane_state->crtc_w = 0; | |
1272 | plane_state->crtc_h = 0; | |
1273 | plane_state->src_x = 0; | |
1274 | plane_state->src_y = 0; | |
1275 | plane_state->src_w = 0; | |
1276 | plane_state->src_h = 0; | |
1277 | ||
1278 | return 0; | |
1279 | } | |
1280 | EXPORT_SYMBOL(__drm_atomic_helper_disable_plane); | |
1281 | ||
1282 | static int update_output_state(struct drm_atomic_state *state, | |
1283 | struct drm_mode_set *set) | |
1284 | { | |
1285 | struct drm_device *dev = set->crtc->dev; | |
1286 | struct drm_crtc *crtc; | |
1287 | struct drm_crtc_state *new_crtc_state; | |
1288 | struct drm_connector *connector; | |
1289 | struct drm_connector_state *new_conn_state; | |
1290 | int ret, i; | |
1291 | ||
1292 | ret = drm_modeset_lock(&dev->mode_config.connection_mutex, | |
1293 | state->acquire_ctx); | |
1294 | if (ret) | |
1295 | return ret; | |
1296 | ||
1297 | /* First disable all connectors on the target crtc. */ | |
1298 | ret = drm_atomic_add_affected_connectors(state, set->crtc); | |
1299 | if (ret) | |
1300 | return ret; | |
1301 | ||
1302 | for_each_new_connector_in_state(state, connector, new_conn_state, i) { | |
1303 | if (new_conn_state->crtc == set->crtc) { | |
1304 | ret = drm_atomic_set_crtc_for_connector(new_conn_state, | |
1305 | NULL); | |
1306 | if (ret) | |
1307 | return ret; | |
1308 | ||
1309 | /* Make sure legacy setCrtc always re-trains */ | |
1310 | new_conn_state->link_status = DRM_LINK_STATUS_GOOD; | |
1311 | } | |
1312 | } | |
1313 | ||
1314 | /* Then set all connectors from set->connectors on the target crtc */ | |
1315 | for (i = 0; i < set->num_connectors; i++) { | |
1316 | new_conn_state = drm_atomic_get_connector_state(state, | |
1317 | set->connectors[i]); | |
1318 | if (IS_ERR(new_conn_state)) | |
1319 | return PTR_ERR(new_conn_state); | |
1320 | ||
1321 | ret = drm_atomic_set_crtc_for_connector(new_conn_state, | |
1322 | set->crtc); | |
1323 | if (ret) | |
1324 | return ret; | |
1325 | } | |
1326 | ||
1327 | for_each_new_crtc_in_state(state, crtc, new_crtc_state, i) { | |
1328 | /* | |
1329 | * Don't update ->enable for the CRTC in the set_config request, | |
1330 | * since a mismatch would indicate a bug in the upper layers. | |
1331 | * The actual modeset code later on will catch any | |
1332 | * inconsistencies here. | |
1333 | */ | |
1334 | if (crtc == set->crtc) | |
1335 | continue; | |
1336 | ||
1337 | if (!new_crtc_state->connector_mask) { | |
1338 | ret = drm_atomic_set_mode_prop_for_crtc(new_crtc_state, | |
1339 | NULL); | |
1340 | if (ret < 0) | |
1341 | return ret; | |
1342 | ||
1343 | new_crtc_state->active = false; | |
1344 | } | |
1345 | } | |
1346 | ||
1347 | return 0; | |
1348 | } | |
1349 | ||
1350 | /* just used from drm-client and atomic-helper: */ | |
1351 | int __drm_atomic_helper_set_config(struct drm_mode_set *set, | |
1352 | struct drm_atomic_state *state) | |
1353 | { | |
1354 | struct drm_crtc_state *crtc_state; | |
1355 | struct drm_plane_state *primary_state; | |
1356 | struct drm_crtc *crtc = set->crtc; | |
1357 | int hdisplay, vdisplay; | |
1358 | int ret; | |
1359 | ||
1360 | crtc_state = drm_atomic_get_crtc_state(state, crtc); | |
1361 | if (IS_ERR(crtc_state)) | |
1362 | return PTR_ERR(crtc_state); | |
1363 | ||
1364 | primary_state = drm_atomic_get_plane_state(state, crtc->primary); | |
1365 | if (IS_ERR(primary_state)) | |
1366 | return PTR_ERR(primary_state); | |
1367 | ||
1368 | if (!set->mode) { | |
1369 | WARN_ON(set->fb); | |
1370 | WARN_ON(set->num_connectors); | |
1371 | ||
1372 | ret = drm_atomic_set_mode_for_crtc(crtc_state, NULL); | |
1373 | if (ret != 0) | |
1374 | return ret; | |
1375 | ||
1376 | crtc_state->active = false; | |
1377 | ||
1378 | ret = drm_atomic_set_crtc_for_plane(primary_state, NULL); | |
1379 | if (ret != 0) | |
1380 | return ret; | |
1381 | ||
1382 | drm_atomic_set_fb_for_plane(primary_state, NULL); | |
1383 | ||
1384 | goto commit; | |
1385 | } | |
1386 | ||
1387 | WARN_ON(!set->fb); | |
1388 | WARN_ON(!set->num_connectors); | |
1389 | ||
1390 | ret = drm_atomic_set_mode_for_crtc(crtc_state, set->mode); | |
1391 | if (ret != 0) | |
1392 | return ret; | |
1393 | ||
1394 | crtc_state->active = true; | |
1395 | ||
1396 | ret = drm_atomic_set_crtc_for_plane(primary_state, crtc); | |
1397 | if (ret != 0) | |
1398 | return ret; | |
1399 | ||
1400 | drm_mode_get_hv_timing(set->mode, &hdisplay, &vdisplay); | |
1401 | ||
1402 | drm_atomic_set_fb_for_plane(primary_state, set->fb); | |
1403 | primary_state->crtc_x = 0; | |
1404 | primary_state->crtc_y = 0; | |
1405 | primary_state->crtc_w = hdisplay; | |
1406 | primary_state->crtc_h = vdisplay; | |
1407 | primary_state->src_x = set->x << 16; | |
1408 | primary_state->src_y = set->y << 16; | |
1409 | if (drm_rotation_90_or_270(primary_state->rotation)) { | |
1410 | primary_state->src_w = vdisplay << 16; | |
1411 | primary_state->src_h = hdisplay << 16; | |
1412 | } else { | |
1413 | primary_state->src_w = hdisplay << 16; | |
1414 | primary_state->src_h = vdisplay << 16; | |
1415 | } | |
1416 | ||
1417 | commit: | |
1418 | ret = update_output_state(state, set); | |
1419 | if (ret) | |
1420 | return ret; | |
1421 | ||
1422 | return 0; | |
1423 | } | |
1424 | EXPORT_SYMBOL(__drm_atomic_helper_set_config); | |
1425 | ||
72fdb40c | 1426 | void drm_atomic_print_state(const struct drm_atomic_state *state) |
fceffb32 RC |
1427 | { |
1428 | struct drm_printer p = drm_info_printer(state->dev->dev); | |
1429 | struct drm_plane *plane; | |
1430 | struct drm_plane_state *plane_state; | |
1431 | struct drm_crtc *crtc; | |
1432 | struct drm_crtc_state *crtc_state; | |
1433 | struct drm_connector *connector; | |
1434 | struct drm_connector_state *connector_state; | |
1435 | int i; | |
1436 | ||
1437 | DRM_DEBUG_ATOMIC("checking %p\n", state); | |
1438 | ||
5721a380 | 1439 | for_each_new_plane_in_state(state, plane, plane_state, i) |
fceffb32 RC |
1440 | drm_atomic_plane_print_state(&p, plane_state); |
1441 | ||
5721a380 | 1442 | for_each_new_crtc_in_state(state, crtc, crtc_state, i) |
fceffb32 RC |
1443 | drm_atomic_crtc_print_state(&p, crtc_state); |
1444 | ||
5721a380 | 1445 | for_each_new_connector_in_state(state, connector, connector_state, i) |
fceffb32 RC |
1446 | drm_atomic_connector_print_state(&p, connector_state); |
1447 | } | |
1448 | ||
c2d85564 DV |
1449 | static void __drm_state_dump(struct drm_device *dev, struct drm_printer *p, |
1450 | bool take_locks) | |
6559c901 RC |
1451 | { |
1452 | struct drm_mode_config *config = &dev->mode_config; | |
1453 | struct drm_plane *plane; | |
1454 | struct drm_crtc *crtc; | |
1455 | struct drm_connector *connector; | |
613051da | 1456 | struct drm_connector_list_iter conn_iter; |
6559c901 | 1457 | |
3c499ea0 | 1458 | if (!drm_drv_uses_atomic_modeset(dev)) |
6559c901 RC |
1459 | return; |
1460 | ||
c2d85564 DV |
1461 | list_for_each_entry(plane, &config->plane_list, head) { |
1462 | if (take_locks) | |
1463 | drm_modeset_lock(&plane->mutex, NULL); | |
6559c901 | 1464 | drm_atomic_plane_print_state(p, plane->state); |
c2d85564 DV |
1465 | if (take_locks) |
1466 | drm_modeset_unlock(&plane->mutex); | |
1467 | } | |
6559c901 | 1468 | |
c2d85564 DV |
1469 | list_for_each_entry(crtc, &config->crtc_list, head) { |
1470 | if (take_locks) | |
1471 | drm_modeset_lock(&crtc->mutex, NULL); | |
6559c901 | 1472 | drm_atomic_crtc_print_state(p, crtc->state); |
c2d85564 DV |
1473 | if (take_locks) |
1474 | drm_modeset_unlock(&crtc->mutex); | |
1475 | } | |
6559c901 | 1476 | |
b982dab1 | 1477 | drm_connector_list_iter_begin(dev, &conn_iter); |
c2d85564 DV |
1478 | if (take_locks) |
1479 | drm_modeset_lock(&dev->mode_config.connection_mutex, NULL); | |
613051da | 1480 | drm_for_each_connector_iter(connector, &conn_iter) |
6559c901 | 1481 | drm_atomic_connector_print_state(p, connector->state); |
c2d85564 DV |
1482 | if (take_locks) |
1483 | drm_modeset_unlock(&dev->mode_config.connection_mutex); | |
b982dab1 | 1484 | drm_connector_list_iter_end(&conn_iter); |
6559c901 | 1485 | } |
c2d85564 DV |
1486 | |
1487 | /** | |
1488 | * drm_state_dump - dump entire device atomic state | |
1489 | * @dev: the drm device | |
1490 | * @p: where to print the state to | |
1491 | * | |
1492 | * Just for debugging. Drivers might want an option to dump state | |
1493 | * to dmesg in case of error irq's. (Hint, you probably want to | |
1494 | * ratelimit this!) | |
1495 | * | |
1496 | * The caller must drm_modeset_lock_all(), or if this is called | |
1497 | * from error irq handler, it should not be enabled by default. | |
1498 | * (Ie. if you are debugging errors you might not care that this | |
1499 | * is racey. But calling this without all modeset locks held is | |
1500 | * not inherently safe.) | |
1501 | */ | |
1502 | void drm_state_dump(struct drm_device *dev, struct drm_printer *p) | |
1503 | { | |
1504 | __drm_state_dump(dev, p, false); | |
1505 | } | |
6559c901 RC |
1506 | EXPORT_SYMBOL(drm_state_dump); |
1507 | ||
1508 | #ifdef CONFIG_DEBUG_FS | |
1509 | static int drm_state_info(struct seq_file *m, void *data) | |
1510 | { | |
1511 | struct drm_info_node *node = (struct drm_info_node *) m->private; | |
1512 | struct drm_device *dev = node->minor->dev; | |
1513 | struct drm_printer p = drm_seq_file_printer(m); | |
1514 | ||
c2d85564 | 1515 | __drm_state_dump(dev, &p, true); |
6559c901 RC |
1516 | |
1517 | return 0; | |
1518 | } | |
1519 | ||
1520 | /* any use in debugfs files to dump individual planes/crtc/etc? */ | |
1521 | static const struct drm_info_list drm_atomic_debugfs_list[] = { | |
1522 | {"state", drm_state_info, 0}, | |
1523 | }; | |
1524 | ||
1525 | int drm_atomic_debugfs_init(struct drm_minor *minor) | |
1526 | { | |
1527 | return drm_debugfs_create_files(drm_atomic_debugfs_list, | |
1528 | ARRAY_SIZE(drm_atomic_debugfs_list), | |
1529 | minor->debugfs_root, minor); | |
1530 | } | |
1531 | #endif |