Commit | Line | Data |
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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> |
75146591 | 33 | #include <drm/drm_bridge.h> |
0500c04e SR |
34 | #include <drm/drm_debugfs.h> |
35 | #include <drm/drm_device.h> | |
36 | #include <drm/drm_drv.h> | |
37 | #include <drm/drm_file.h> | |
38 | #include <drm/drm_fourcc.h> | |
5488dc16 | 39 | #include <drm/drm_mode.h> |
fceffb32 | 40 | #include <drm/drm_print.h> |
935774cd | 41 | #include <drm/drm_writeback.h> |
cc4ceb48 | 42 | |
be35f94f | 43 | #include "drm_crtc_internal.h" |
f02b604b | 44 | #include "drm_internal.h" |
be35f94f | 45 | |
b3ba3f6f | 46 | void __drm_crtc_commit_free(struct kref *kref) |
3b24f7d6 DV |
47 | { |
48 | struct drm_crtc_commit *commit = | |
49 | container_of(kref, struct drm_crtc_commit, ref); | |
50 | ||
51 | kfree(commit); | |
52 | } | |
b3ba3f6f | 53 | EXPORT_SYMBOL(__drm_crtc_commit_free); |
3b24f7d6 | 54 | |
036ef573 ML |
55 | /** |
56 | * drm_atomic_state_default_release - | |
57 | * release memory initialized by drm_atomic_state_init | |
58 | * @state: atomic state | |
59 | * | |
60 | * Free all the memory allocated by drm_atomic_state_init. | |
da6c0596 DV |
61 | * This should only be used by drivers which are still subclassing |
62 | * &drm_atomic_state and haven't switched to &drm_private_state yet. | |
036ef573 ML |
63 | */ |
64 | void drm_atomic_state_default_release(struct drm_atomic_state *state) | |
cc4ceb48 DV |
65 | { |
66 | kfree(state->connectors); | |
cc4ceb48 | 67 | kfree(state->crtcs); |
cc4ceb48 | 68 | kfree(state->planes); |
b430c27a | 69 | kfree(state->private_objs); |
cc4ceb48 | 70 | } |
036ef573 | 71 | EXPORT_SYMBOL(drm_atomic_state_default_release); |
cc4ceb48 DV |
72 | |
73 | /** | |
036ef573 | 74 | * drm_atomic_state_init - init new atomic state |
cc4ceb48 | 75 | * @dev: DRM device |
036ef573 | 76 | * @state: atomic state |
cc4ceb48 | 77 | * |
036ef573 | 78 | * Default implementation for filling in a new atomic state. |
da6c0596 DV |
79 | * This should only be used by drivers which are still subclassing |
80 | * &drm_atomic_state and haven't switched to &drm_private_state yet. | |
cc4ceb48 | 81 | */ |
036ef573 ML |
82 | int |
83 | drm_atomic_state_init(struct drm_device *dev, struct drm_atomic_state *state) | |
cc4ceb48 | 84 | { |
0853695c CW |
85 | kref_init(&state->ref); |
86 | ||
d34f20d6 RC |
87 | /* TODO legacy paths should maybe do a better job about |
88 | * setting this appropriately? | |
89 | */ | |
90 | state->allow_modeset = true; | |
91 | ||
cc4ceb48 DV |
92 | state->crtcs = kcalloc(dev->mode_config.num_crtc, |
93 | sizeof(*state->crtcs), GFP_KERNEL); | |
94 | if (!state->crtcs) | |
95 | goto fail; | |
cc4ceb48 DV |
96 | state->planes = kcalloc(dev->mode_config.num_total_plane, |
97 | sizeof(*state->planes), GFP_KERNEL); | |
98 | if (!state->planes) | |
99 | goto fail; | |
cc4ceb48 DV |
100 | |
101 | state->dev = dev; | |
102 | ||
036ef573 | 103 | DRM_DEBUG_ATOMIC("Allocated atomic state %p\n", state); |
cc4ceb48 | 104 | |
036ef573 | 105 | return 0; |
cc4ceb48 | 106 | fail: |
036ef573 ML |
107 | drm_atomic_state_default_release(state); |
108 | return -ENOMEM; | |
109 | } | |
110 | EXPORT_SYMBOL(drm_atomic_state_init); | |
111 | ||
112 | /** | |
113 | * drm_atomic_state_alloc - allocate atomic state | |
114 | * @dev: DRM device | |
115 | * | |
116 | * This allocates an empty atomic state to track updates. | |
117 | */ | |
118 | struct drm_atomic_state * | |
119 | drm_atomic_state_alloc(struct drm_device *dev) | |
120 | { | |
121 | struct drm_mode_config *config = &dev->mode_config; | |
036ef573 ML |
122 | |
123 | if (!config->funcs->atomic_state_alloc) { | |
ac7c7483 DK |
124 | struct drm_atomic_state *state; |
125 | ||
036ef573 ML |
126 | state = kzalloc(sizeof(*state), GFP_KERNEL); |
127 | if (!state) | |
128 | return NULL; | |
129 | if (drm_atomic_state_init(dev, state) < 0) { | |
130 | kfree(state); | |
131 | return NULL; | |
132 | } | |
133 | return state; | |
134 | } | |
cc4ceb48 | 135 | |
036ef573 | 136 | return config->funcs->atomic_state_alloc(dev); |
cc4ceb48 DV |
137 | } |
138 | EXPORT_SYMBOL(drm_atomic_state_alloc); | |
139 | ||
140 | /** | |
036ef573 | 141 | * drm_atomic_state_default_clear - clear base atomic state |
cc4ceb48 DV |
142 | * @state: atomic state |
143 | * | |
036ef573 | 144 | * Default implementation for clearing atomic state. |
da6c0596 DV |
145 | * This should only be used by drivers which are still subclassing |
146 | * &drm_atomic_state and haven't switched to &drm_private_state yet. | |
cc4ceb48 | 147 | */ |
036ef573 | 148 | void drm_atomic_state_default_clear(struct drm_atomic_state *state) |
cc4ceb48 DV |
149 | { |
150 | struct drm_device *dev = state->dev; | |
6f75cea6 | 151 | struct drm_mode_config *config = &dev->mode_config; |
cc4ceb48 DV |
152 | int i; |
153 | ||
17a38d9c | 154 | DRM_DEBUG_ATOMIC("Clearing atomic state %p\n", state); |
cc4ceb48 | 155 | |
f52b69f1 | 156 | for (i = 0; i < state->num_connector; i++) { |
63e83c1d | 157 | struct drm_connector *connector = state->connectors[i].ptr; |
cc4ceb48 DV |
158 | |
159 | if (!connector) | |
160 | continue; | |
161 | ||
d2307dea | 162 | connector->funcs->atomic_destroy_state(connector, |
63e83c1d DV |
163 | state->connectors[i].state); |
164 | state->connectors[i].ptr = NULL; | |
165 | state->connectors[i].state = NULL; | |
f0b408ee VS |
166 | state->connectors[i].old_state = NULL; |
167 | state->connectors[i].new_state = NULL; | |
ad093607 | 168 | drm_connector_put(connector); |
cc4ceb48 DV |
169 | } |
170 | ||
6f75cea6 | 171 | for (i = 0; i < config->num_crtc; i++) { |
5d943aa6 | 172 | struct drm_crtc *crtc = state->crtcs[i].ptr; |
cc4ceb48 DV |
173 | |
174 | if (!crtc) | |
175 | continue; | |
176 | ||
177 | crtc->funcs->atomic_destroy_state(crtc, | |
5d943aa6 | 178 | state->crtcs[i].state); |
3b24f7d6 | 179 | |
5d943aa6 DV |
180 | state->crtcs[i].ptr = NULL; |
181 | state->crtcs[i].state = NULL; | |
f0b408ee VS |
182 | state->crtcs[i].old_state = NULL; |
183 | state->crtcs[i].new_state = NULL; | |
4364bcb2 LL |
184 | |
185 | if (state->crtcs[i].commit) { | |
186 | drm_crtc_commit_put(state->crtcs[i].commit); | |
187 | state->crtcs[i].commit = NULL; | |
188 | } | |
cc4ceb48 DV |
189 | } |
190 | ||
6f75cea6 | 191 | for (i = 0; i < config->num_total_plane; i++) { |
b8b5342b | 192 | struct drm_plane *plane = state->planes[i].ptr; |
cc4ceb48 DV |
193 | |
194 | if (!plane) | |
195 | continue; | |
196 | ||
197 | plane->funcs->atomic_destroy_state(plane, | |
b8b5342b DV |
198 | state->planes[i].state); |
199 | state->planes[i].ptr = NULL; | |
200 | state->planes[i].state = NULL; | |
f0b408ee VS |
201 | state->planes[i].old_state = NULL; |
202 | state->planes[i].new_state = NULL; | |
cc4ceb48 | 203 | } |
b430c27a PD |
204 | |
205 | for (i = 0; i < state->num_private_objs; i++) { | |
a4370c77 | 206 | struct drm_private_obj *obj = state->private_objs[i].ptr; |
b430c27a | 207 | |
a4370c77 VS |
208 | obj->funcs->atomic_destroy_state(obj, |
209 | state->private_objs[i].state); | |
210 | state->private_objs[i].ptr = NULL; | |
211 | state->private_objs[i].state = NULL; | |
b5cb2e5a VS |
212 | state->private_objs[i].old_state = NULL; |
213 | state->private_objs[i].new_state = NULL; | |
b430c27a PD |
214 | } |
215 | state->num_private_objs = 0; | |
216 | ||
21a01abb ML |
217 | if (state->fake_commit) { |
218 | drm_crtc_commit_put(state->fake_commit); | |
219 | state->fake_commit = NULL; | |
220 | } | |
cc4ceb48 | 221 | } |
036ef573 ML |
222 | EXPORT_SYMBOL(drm_atomic_state_default_clear); |
223 | ||
224 | /** | |
225 | * drm_atomic_state_clear - clear state object | |
226 | * @state: atomic state | |
227 | * | |
228 | * When the w/w mutex algorithm detects a deadlock we need to back off and drop | |
229 | * all locks. So someone else could sneak in and change the current modeset | |
230 | * configuration. Which means that all the state assembled in @state is no | |
231 | * longer an atomic update to the current state, but to some arbitrary earlier | |
d574528a DV |
232 | * state. Which could break assumptions the driver's |
233 | * &drm_mode_config_funcs.atomic_check likely relies on. | |
036ef573 ML |
234 | * |
235 | * Hence we must clear all cached state and completely start over, using this | |
236 | * function. | |
237 | */ | |
238 | void drm_atomic_state_clear(struct drm_atomic_state *state) | |
239 | { | |
240 | struct drm_device *dev = state->dev; | |
241 | struct drm_mode_config *config = &dev->mode_config; | |
242 | ||
243 | if (config->funcs->atomic_state_clear) | |
244 | config->funcs->atomic_state_clear(state); | |
245 | else | |
246 | drm_atomic_state_default_clear(state); | |
247 | } | |
cc4ceb48 DV |
248 | EXPORT_SYMBOL(drm_atomic_state_clear); |
249 | ||
250 | /** | |
0853695c CW |
251 | * __drm_atomic_state_free - free all memory for an atomic state |
252 | * @ref: This atomic state to deallocate | |
cc4ceb48 DV |
253 | * |
254 | * This frees all memory associated with an atomic state, including all the | |
42240c90 | 255 | * per-object state for planes, CRTCs and connectors. |
cc4ceb48 | 256 | */ |
0853695c | 257 | void __drm_atomic_state_free(struct kref *ref) |
cc4ceb48 | 258 | { |
0853695c CW |
259 | struct drm_atomic_state *state = container_of(ref, typeof(*state), ref); |
260 | struct drm_mode_config *config = &state->dev->mode_config; | |
036ef573 | 261 | |
cc4ceb48 DV |
262 | drm_atomic_state_clear(state); |
263 | ||
17a38d9c | 264 | DRM_DEBUG_ATOMIC("Freeing atomic state %p\n", state); |
cc4ceb48 | 265 | |
036ef573 ML |
266 | if (config->funcs->atomic_state_free) { |
267 | config->funcs->atomic_state_free(state); | |
268 | } else { | |
269 | drm_atomic_state_default_release(state); | |
270 | kfree(state); | |
271 | } | |
cc4ceb48 | 272 | } |
0853695c | 273 | EXPORT_SYMBOL(__drm_atomic_state_free); |
cc4ceb48 DV |
274 | |
275 | /** | |
42240c90 | 276 | * drm_atomic_get_crtc_state - get CRTC state |
cc4ceb48 | 277 | * @state: global atomic state object |
42240c90 | 278 | * @crtc: CRTC to get state object for |
cc4ceb48 | 279 | * |
42240c90 TR |
280 | * This function returns the CRTC state for the given CRTC, allocating it if |
281 | * needed. It will also grab the relevant CRTC lock to make sure that the state | |
cc4ceb48 DV |
282 | * is consistent. |
283 | * | |
fb6473a4 DV |
284 | * WARNING: Drivers may only add new CRTC states to a @state if |
285 | * drm_atomic_state.allow_modeset is set, or if it's a driver-internal commit | |
286 | * not created by userspace through an IOCTL call. | |
287 | * | |
cc4ceb48 DV |
288 | * Returns: |
289 | * | |
290 | * Either the allocated state or the error code encoded into the pointer. When | |
291 | * the error is EDEADLK then the w/w mutex code has detected a deadlock and the | |
292 | * entire atomic sequence must be restarted. All other errors are fatal. | |
293 | */ | |
294 | struct drm_crtc_state * | |
295 | drm_atomic_get_crtc_state(struct drm_atomic_state *state, | |
296 | struct drm_crtc *crtc) | |
297 | { | |
1b26a5e1 | 298 | int ret, index = drm_crtc_index(crtc); |
cc4ceb48 DV |
299 | struct drm_crtc_state *crtc_state; |
300 | ||
7f4eaa89 ML |
301 | WARN_ON(!state->acquire_ctx); |
302 | ||
1b26a5e1 ML |
303 | crtc_state = drm_atomic_get_existing_crtc_state(state, crtc); |
304 | if (crtc_state) | |
305 | return crtc_state; | |
cc4ceb48 DV |
306 | |
307 | ret = drm_modeset_lock(&crtc->mutex, state->acquire_ctx); | |
308 | if (ret) | |
309 | return ERR_PTR(ret); | |
310 | ||
311 | crtc_state = crtc->funcs->atomic_duplicate_state(crtc); | |
312 | if (!crtc_state) | |
313 | return ERR_PTR(-ENOMEM); | |
314 | ||
5d943aa6 | 315 | state->crtcs[index].state = crtc_state; |
581e49fe ML |
316 | state->crtcs[index].old_state = crtc->state; |
317 | state->crtcs[index].new_state = crtc_state; | |
5d943aa6 | 318 | state->crtcs[index].ptr = crtc; |
cc4ceb48 DV |
319 | crtc_state->state = state; |
320 | ||
fa3ab4c2 VS |
321 | DRM_DEBUG_ATOMIC("Added [CRTC:%d:%s] %p state to %p\n", |
322 | crtc->base.id, crtc->name, crtc_state, state); | |
cc4ceb48 DV |
323 | |
324 | return crtc_state; | |
325 | } | |
326 | EXPORT_SYMBOL(drm_atomic_get_crtc_state); | |
327 | ||
b2432adf VS |
328 | static int drm_atomic_crtc_check(const struct drm_crtc_state *old_crtc_state, |
329 | const struct drm_crtc_state *new_crtc_state) | |
5e743737 | 330 | { |
b2432adf VS |
331 | struct drm_crtc *crtc = new_crtc_state->crtc; |
332 | ||
5e743737 RC |
333 | /* NOTE: we explicitly don't enforce constraints such as primary |
334 | * layer covering entire screen, since that is something we want | |
335 | * to allow (on hw that supports it). For hw that does not, it | |
336 | * should be checked in driver's crtc->atomic_check() vfunc. | |
337 | * | |
338 | * TODO: Add generic modeset state checks once we support those. | |
339 | */ | |
eab3bbef | 340 | |
b2432adf | 341 | if (new_crtc_state->active && !new_crtc_state->enable) { |
fa3ab4c2 VS |
342 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] active without enabled\n", |
343 | crtc->base.id, crtc->name); | |
eab3bbef DV |
344 | return -EINVAL; |
345 | } | |
346 | ||
99cf4a29 DS |
347 | /* The state->enable vs. state->mode_blob checks can be WARN_ON, |
348 | * as this is a kernel-internal detail that userspace should never | |
349 | * be able to trigger. */ | |
350 | if (drm_core_check_feature(crtc->dev, DRIVER_ATOMIC) && | |
b2432adf | 351 | WARN_ON(new_crtc_state->enable && !new_crtc_state->mode_blob)) { |
fa3ab4c2 VS |
352 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] enabled without mode blob\n", |
353 | crtc->base.id, crtc->name); | |
99cf4a29 DS |
354 | return -EINVAL; |
355 | } | |
356 | ||
357 | if (drm_core_check_feature(crtc->dev, DRIVER_ATOMIC) && | |
b2432adf | 358 | WARN_ON(!new_crtc_state->enable && new_crtc_state->mode_blob)) { |
fa3ab4c2 VS |
359 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] disabled with mode blob\n", |
360 | crtc->base.id, crtc->name); | |
99cf4a29 DS |
361 | return -EINVAL; |
362 | } | |
363 | ||
4cba6850 DV |
364 | /* |
365 | * Reject event generation for when a CRTC is off and stays off. | |
366 | * It wouldn't be hard to implement this, but userspace has a track | |
367 | * record of happily burning through 100% cpu (or worse, crash) when the | |
368 | * display pipe is suspended. To avoid all that fun just reject updates | |
369 | * that ask for events since likely that indicates a bug in the | |
370 | * compositor's drawing loop. This is consistent with the vblank IOCTL | |
371 | * and legacy page_flip IOCTL which also reject service on a disabled | |
372 | * pipe. | |
373 | */ | |
b2432adf VS |
374 | if (new_crtc_state->event && |
375 | !new_crtc_state->active && !old_crtc_state->active) { | |
6ac7c548 RK |
376 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] requesting event but off\n", |
377 | crtc->base.id, crtc->name); | |
4cba6850 DV |
378 | return -EINVAL; |
379 | } | |
380 | ||
5e743737 RC |
381 | return 0; |
382 | } | |
383 | ||
fceffb32 RC |
384 | static void drm_atomic_crtc_print_state(struct drm_printer *p, |
385 | const struct drm_crtc_state *state) | |
386 | { | |
387 | struct drm_crtc *crtc = state->crtc; | |
388 | ||
389 | drm_printf(p, "crtc[%u]: %s\n", crtc->base.id, crtc->name); | |
390 | drm_printf(p, "\tenable=%d\n", state->enable); | |
391 | drm_printf(p, "\tactive=%d\n", state->active); | |
1452c25b | 392 | drm_printf(p, "\tself_refresh_active=%d\n", state->self_refresh_active); |
fceffb32 RC |
393 | drm_printf(p, "\tplanes_changed=%d\n", state->planes_changed); |
394 | drm_printf(p, "\tmode_changed=%d\n", state->mode_changed); | |
395 | drm_printf(p, "\tactive_changed=%d\n", state->active_changed); | |
396 | drm_printf(p, "\tconnectors_changed=%d\n", state->connectors_changed); | |
397 | drm_printf(p, "\tcolor_mgmt_changed=%d\n", state->color_mgmt_changed); | |
398 | drm_printf(p, "\tplane_mask=%x\n", state->plane_mask); | |
399 | drm_printf(p, "\tconnector_mask=%x\n", state->connector_mask); | |
400 | drm_printf(p, "\tencoder_mask=%x\n", state->encoder_mask); | |
401 | drm_printf(p, "\tmode: " DRM_MODE_FMT "\n", DRM_MODE_ARG(&state->mode)); | |
402 | ||
403 | if (crtc->funcs->atomic_print_state) | |
404 | crtc->funcs->atomic_print_state(p, state); | |
405 | } | |
406 | ||
935774cd BS |
407 | static int drm_atomic_connector_check(struct drm_connector *connector, |
408 | struct drm_connector_state *state) | |
409 | { | |
410 | struct drm_crtc_state *crtc_state; | |
411 | struct drm_writeback_job *writeback_job = state->writeback_job; | |
47e22ff1 RS |
412 | const struct drm_display_info *info = &connector->display_info; |
413 | ||
414 | state->max_bpc = info->bpc ? info->bpc : 8; | |
415 | if (connector->max_bpc_property) | |
416 | state->max_bpc = min(state->max_bpc, state->max_requested_bpc); | |
935774cd BS |
417 | |
418 | if ((connector->connector_type != DRM_MODE_CONNECTOR_WRITEBACK) || !writeback_job) | |
419 | return 0; | |
420 | ||
421 | if (writeback_job->fb && !state->crtc) { | |
422 | DRM_DEBUG_ATOMIC("[CONNECTOR:%d:%s] framebuffer without CRTC\n", | |
423 | connector->base.id, connector->name); | |
424 | return -EINVAL; | |
425 | } | |
426 | ||
427 | if (state->crtc) | |
428 | crtc_state = drm_atomic_get_existing_crtc_state(state->state, | |
429 | state->crtc); | |
430 | ||
431 | if (writeback_job->fb && !crtc_state->active) { | |
432 | DRM_DEBUG_ATOMIC("[CONNECTOR:%d:%s] has framebuffer, but [CRTC:%d] is off\n", | |
433 | connector->base.id, connector->name, | |
434 | state->crtc->base.id); | |
435 | return -EINVAL; | |
436 | } | |
437 | ||
8581d510 LLATC |
438 | if (!writeback_job->fb) { |
439 | if (writeback_job->out_fence) { | |
440 | DRM_DEBUG_ATOMIC("[CONNECTOR:%d:%s] requesting out-fence without framebuffer\n", | |
441 | connector->base.id, connector->name); | |
442 | return -EINVAL; | |
443 | } | |
444 | ||
445 | drm_writeback_cleanup_job(writeback_job); | |
446 | state->writeback_job = NULL; | |
b13cc8dd BS |
447 | } |
448 | ||
935774cd BS |
449 | return 0; |
450 | } | |
451 | ||
cc4ceb48 DV |
452 | /** |
453 | * drm_atomic_get_plane_state - get plane state | |
454 | * @state: global atomic state object | |
455 | * @plane: plane to get state object for | |
456 | * | |
457 | * This function returns the plane state for the given plane, allocating it if | |
458 | * needed. It will also grab the relevant plane lock to make sure that the state | |
459 | * is consistent. | |
460 | * | |
461 | * Returns: | |
462 | * | |
463 | * Either the allocated state or the error code encoded into the pointer. When | |
464 | * the error is EDEADLK then the w/w mutex code has detected a deadlock and the | |
465 | * entire atomic sequence must be restarted. All other errors are fatal. | |
466 | */ | |
467 | struct drm_plane_state * | |
468 | drm_atomic_get_plane_state(struct drm_atomic_state *state, | |
469 | struct drm_plane *plane) | |
470 | { | |
1b26a5e1 | 471 | int ret, index = drm_plane_index(plane); |
cc4ceb48 DV |
472 | struct drm_plane_state *plane_state; |
473 | ||
7f4eaa89 ML |
474 | WARN_ON(!state->acquire_ctx); |
475 | ||
e00fb856 VS |
476 | /* the legacy pointers should never be set */ |
477 | WARN_ON(plane->fb); | |
478 | WARN_ON(plane->old_fb); | |
479 | WARN_ON(plane->crtc); | |
480 | ||
1b26a5e1 ML |
481 | plane_state = drm_atomic_get_existing_plane_state(state, plane); |
482 | if (plane_state) | |
483 | return plane_state; | |
cc4ceb48 | 484 | |
4d02e2de | 485 | ret = drm_modeset_lock(&plane->mutex, state->acquire_ctx); |
cc4ceb48 DV |
486 | if (ret) |
487 | return ERR_PTR(ret); | |
488 | ||
489 | plane_state = plane->funcs->atomic_duplicate_state(plane); | |
490 | if (!plane_state) | |
491 | return ERR_PTR(-ENOMEM); | |
492 | ||
b8b5342b DV |
493 | state->planes[index].state = plane_state; |
494 | state->planes[index].ptr = plane; | |
581e49fe ML |
495 | state->planes[index].old_state = plane->state; |
496 | state->planes[index].new_state = plane_state; | |
cc4ceb48 DV |
497 | plane_state->state = state; |
498 | ||
9f4c97a2 VS |
499 | DRM_DEBUG_ATOMIC("Added [PLANE:%d:%s] %p state to %p\n", |
500 | plane->base.id, plane->name, plane_state, state); | |
cc4ceb48 DV |
501 | |
502 | if (plane_state->crtc) { | |
503 | struct drm_crtc_state *crtc_state; | |
504 | ||
505 | crtc_state = drm_atomic_get_crtc_state(state, | |
506 | plane_state->crtc); | |
507 | if (IS_ERR(crtc_state)) | |
508 | return ERR_CAST(crtc_state); | |
509 | } | |
510 | ||
511 | return plane_state; | |
512 | } | |
513 | EXPORT_SYMBOL(drm_atomic_get_plane_state); | |
514 | ||
f8aeb41c | 515 | static bool |
d9be05b7 VS |
516 | plane_switching_crtc(const struct drm_plane_state *old_plane_state, |
517 | const struct drm_plane_state *new_plane_state) | |
f8aeb41c | 518 | { |
d9be05b7 | 519 | if (!old_plane_state->crtc || !new_plane_state->crtc) |
f8aeb41c DV |
520 | return false; |
521 | ||
d9be05b7 | 522 | if (old_plane_state->crtc == new_plane_state->crtc) |
f8aeb41c DV |
523 | return false; |
524 | ||
525 | /* This could be refined, but currently there's no helper or driver code | |
526 | * to implement direct switching of active planes nor userspace to take | |
527 | * advantage of more direct plane switching without the intermediate | |
528 | * full OFF state. | |
529 | */ | |
530 | return true; | |
531 | } | |
532 | ||
5e743737 RC |
533 | /** |
534 | * drm_atomic_plane_check - check plane state | |
d9be05b7 VS |
535 | * @old_plane_state: old plane state to check |
536 | * @new_plane_state: new plane state to check | |
5e743737 RC |
537 | * |
538 | * Provides core sanity checks for plane state. | |
539 | * | |
540 | * RETURNS: | |
541 | * Zero on success, error code on failure | |
542 | */ | |
d9be05b7 VS |
543 | static int drm_atomic_plane_check(const struct drm_plane_state *old_plane_state, |
544 | const struct drm_plane_state *new_plane_state) | |
5e743737 | 545 | { |
d9be05b7 VS |
546 | struct drm_plane *plane = new_plane_state->plane; |
547 | struct drm_crtc *crtc = new_plane_state->crtc; | |
548 | const struct drm_framebuffer *fb = new_plane_state->fb; | |
5e743737 | 549 | unsigned int fb_width, fb_height; |
d3b21767 LS |
550 | struct drm_mode_rect *clips; |
551 | uint32_t num_clips; | |
ead8610d | 552 | int ret; |
5e743737 RC |
553 | |
554 | /* either *both* CRTC and FB must be set, or neither */ | |
d9be05b7 | 555 | if (crtc && !fb) { |
b6f690ab VS |
556 | DRM_DEBUG_ATOMIC("[PLANE:%d:%s] CRTC set but no FB\n", |
557 | plane->base.id, plane->name); | |
5e743737 | 558 | return -EINVAL; |
d9be05b7 | 559 | } else if (fb && !crtc) { |
b6f690ab VS |
560 | DRM_DEBUG_ATOMIC("[PLANE:%d:%s] FB set but no CRTC\n", |
561 | plane->base.id, plane->name); | |
5e743737 RC |
562 | return -EINVAL; |
563 | } | |
564 | ||
565 | /* if disabled, we don't care about the rest of the state: */ | |
d9be05b7 | 566 | if (!crtc) |
5e743737 RC |
567 | return 0; |
568 | ||
569 | /* Check whether this plane is usable on this CRTC */ | |
d9be05b7 | 570 | if (!(plane->possible_crtcs & drm_crtc_mask(crtc))) { |
b6f690ab | 571 | DRM_DEBUG_ATOMIC("Invalid [CRTC:%d:%s] for [PLANE:%d:%s]\n", |
d9be05b7 | 572 | crtc->base.id, crtc->name, |
b6f690ab | 573 | plane->base.id, plane->name); |
5e743737 RC |
574 | return -EINVAL; |
575 | } | |
576 | ||
577 | /* Check whether this plane supports the fb pixel format. */ | |
d9be05b7 VS |
578 | ret = drm_plane_check_pixel_format(plane, fb->format->format, |
579 | fb->modifier); | |
ead8610d | 580 | if (ret) { |
b3c11ac2 | 581 | struct drm_format_name_buf format_name; |
948de842 | 582 | |
b6f690ab VS |
583 | DRM_DEBUG_ATOMIC("[PLANE:%d:%s] invalid pixel format %s, modifier 0x%llx\n", |
584 | plane->base.id, plane->name, | |
d9be05b7 | 585 | drm_get_format_name(fb->format->format, |
23163a7d | 586 | &format_name), |
d9be05b7 | 587 | fb->modifier); |
ead8610d | 588 | return ret; |
5e743737 RC |
589 | } |
590 | ||
591 | /* Give drivers some help against integer overflows */ | |
d9be05b7 VS |
592 | if (new_plane_state->crtc_w > INT_MAX || |
593 | new_plane_state->crtc_x > INT_MAX - (int32_t) new_plane_state->crtc_w || | |
594 | new_plane_state->crtc_h > INT_MAX || | |
595 | new_plane_state->crtc_y > INT_MAX - (int32_t) new_plane_state->crtc_h) { | |
b6f690ab VS |
596 | DRM_DEBUG_ATOMIC("[PLANE:%d:%s] invalid CRTC coordinates %ux%u+%d+%d\n", |
597 | plane->base.id, plane->name, | |
d9be05b7 VS |
598 | new_plane_state->crtc_w, new_plane_state->crtc_h, |
599 | new_plane_state->crtc_x, new_plane_state->crtc_y); | |
5e743737 RC |
600 | return -ERANGE; |
601 | } | |
602 | ||
d9be05b7 VS |
603 | fb_width = fb->width << 16; |
604 | fb_height = fb->height << 16; | |
5e743737 RC |
605 | |
606 | /* Make sure source coordinates are inside the fb. */ | |
d9be05b7 VS |
607 | if (new_plane_state->src_w > fb_width || |
608 | new_plane_state->src_x > fb_width - new_plane_state->src_w || | |
609 | new_plane_state->src_h > fb_height || | |
610 | new_plane_state->src_y > fb_height - new_plane_state->src_h) { | |
b6f690ab | 611 | DRM_DEBUG_ATOMIC("[PLANE:%d:%s] invalid source coordinates " |
0338f0d0 | 612 | "%u.%06ux%u.%06u+%u.%06u+%u.%06u (fb %ux%u)\n", |
b6f690ab | 613 | plane->base.id, plane->name, |
d9be05b7 VS |
614 | new_plane_state->src_w >> 16, |
615 | ((new_plane_state->src_w & 0xffff) * 15625) >> 10, | |
616 | new_plane_state->src_h >> 16, | |
617 | ((new_plane_state->src_h & 0xffff) * 15625) >> 10, | |
618 | new_plane_state->src_x >> 16, | |
619 | ((new_plane_state->src_x & 0xffff) * 15625) >> 10, | |
620 | new_plane_state->src_y >> 16, | |
621 | ((new_plane_state->src_y & 0xffff) * 15625) >> 10, | |
622 | fb->width, fb->height); | |
5e743737 RC |
623 | return -ENOSPC; |
624 | } | |
625 | ||
d3b21767 LS |
626 | clips = drm_plane_get_damage_clips(new_plane_state); |
627 | num_clips = drm_plane_get_damage_clips_count(new_plane_state); | |
628 | ||
629 | /* Make sure damage clips are valid and inside the fb. */ | |
630 | while (num_clips > 0) { | |
631 | if (clips->x1 >= clips->x2 || | |
632 | clips->y1 >= clips->y2 || | |
633 | clips->x1 < 0 || | |
634 | clips->y1 < 0 || | |
635 | clips->x2 > fb_width || | |
636 | clips->y2 > fb_height) { | |
637 | DRM_DEBUG_ATOMIC("[PLANE:%d:%s] invalid damage clip %d %d %d %d\n", | |
638 | plane->base.id, plane->name, clips->x1, | |
639 | clips->y1, clips->x2, clips->y2); | |
640 | return -EINVAL; | |
641 | } | |
642 | clips++; | |
643 | num_clips--; | |
644 | } | |
645 | ||
d9be05b7 | 646 | if (plane_switching_crtc(old_plane_state, new_plane_state)) { |
9f4c97a2 VS |
647 | DRM_DEBUG_ATOMIC("[PLANE:%d:%s] switching CRTC directly\n", |
648 | plane->base.id, plane->name); | |
f8aeb41c DV |
649 | return -EINVAL; |
650 | } | |
651 | ||
5e743737 RC |
652 | return 0; |
653 | } | |
654 | ||
fceffb32 RC |
655 | static void drm_atomic_plane_print_state(struct drm_printer *p, |
656 | const struct drm_plane_state *state) | |
657 | { | |
658 | struct drm_plane *plane = state->plane; | |
659 | struct drm_rect src = drm_plane_state_src(state); | |
660 | struct drm_rect dest = drm_plane_state_dest(state); | |
661 | ||
662 | drm_printf(p, "plane[%u]: %s\n", plane->base.id, plane->name); | |
663 | drm_printf(p, "\tcrtc=%s\n", state->crtc ? state->crtc->name : "(null)"); | |
664 | drm_printf(p, "\tfb=%u\n", state->fb ? state->fb->base.id : 0); | |
f02b604b NT |
665 | if (state->fb) |
666 | drm_framebuffer_print_info(p, 2, state->fb); | |
fceffb32 RC |
667 | drm_printf(p, "\tcrtc-pos=" DRM_RECT_FMT "\n", DRM_RECT_ARG(&dest)); |
668 | drm_printf(p, "\tsrc-pos=" DRM_RECT_FP_FMT "\n", DRM_RECT_FP_ARG(&src)); | |
669 | drm_printf(p, "\trotation=%x\n", state->rotation); | |
f8878bb2 | 670 | drm_printf(p, "\tnormalized-zpos=%x\n", state->normalized_zpos); |
56dbbaff VS |
671 | drm_printf(p, "\tcolor-encoding=%s\n", |
672 | drm_get_color_encoding_name(state->color_encoding)); | |
673 | drm_printf(p, "\tcolor-range=%s\n", | |
674 | drm_get_color_range_name(state->color_range)); | |
fceffb32 RC |
675 | |
676 | if (plane->funcs->atomic_print_state) | |
677 | plane->funcs->atomic_print_state(p, state); | |
678 | } | |
679 | ||
da6c0596 DV |
680 | /** |
681 | * DOC: handling driver private state | |
682 | * | |
683 | * Very often the DRM objects exposed to userspace in the atomic modeset api | |
684 | * (&drm_connector, &drm_crtc and &drm_plane) do not map neatly to the | |
685 | * underlying hardware. Especially for any kind of shared resources (e.g. shared | |
686 | * clocks, scaler units, bandwidth and fifo limits shared among a group of | |
687 | * planes or CRTCs, and so on) it makes sense to model these as independent | |
688 | * objects. Drivers then need to do similar state tracking and commit ordering for | |
689 | * such private (since not exposed to userpace) objects as the atomic core and | |
690 | * helpers already provide for connectors, planes and CRTCs. | |
691 | * | |
692 | * To make this easier on drivers the atomic core provides some support to track | |
693 | * driver private state objects using struct &drm_private_obj, with the | |
694 | * associated state struct &drm_private_state. | |
695 | * | |
696 | * Similar to userspace-exposed objects, private state structures can be | |
0380c684 DV |
697 | * acquired by calling drm_atomic_get_private_obj_state(). This also takes care |
698 | * of locking, hence drivers should not have a need to call drm_modeset_lock() | |
699 | * directly. Sequence of the actual hardware state commit is not handled, | |
700 | * drivers might need to keep track of struct drm_crtc_commit within subclassed | |
701 | * structure of &drm_private_state as necessary, e.g. similar to | |
702 | * &drm_plane_state.commit. See also &drm_atomic_state.fake_commit. | |
da6c0596 DV |
703 | * |
704 | * All private state structures contained in a &drm_atomic_state update can be | |
705 | * iterated using for_each_oldnew_private_obj_in_state(), | |
706 | * for_each_new_private_obj_in_state() and for_each_old_private_obj_in_state(). | |
707 | * Drivers are recommended to wrap these for each type of driver private state | |
708 | * object they have, filtering on &drm_private_obj.funcs using for_each_if(), at | |
709 | * least if they want to iterate over all objects of a given type. | |
710 | * | |
711 | * An earlier way to handle driver private state was by subclassing struct | |
712 | * &drm_atomic_state. But since that encourages non-standard ways to implement | |
713 | * the check/commit split atomic requires (by using e.g. "check and rollback or | |
714 | * commit instead" of "duplicate state, check, then either commit or release | |
715 | * duplicated state) it is deprecated in favour of using &drm_private_state. | |
716 | */ | |
717 | ||
a4370c77 VS |
718 | /** |
719 | * drm_atomic_private_obj_init - initialize private object | |
b962a120 | 720 | * @dev: DRM device this object will be attached to |
a4370c77 VS |
721 | * @obj: private object |
722 | * @state: initial private object state | |
723 | * @funcs: pointer to the struct of function pointers that identify the object | |
724 | * type | |
725 | * | |
726 | * Initialize the private object, which can be embedded into any | |
727 | * driver private object that needs its own atomic state. | |
728 | */ | |
729 | void | |
b962a120 RC |
730 | drm_atomic_private_obj_init(struct drm_device *dev, |
731 | struct drm_private_obj *obj, | |
a4370c77 VS |
732 | struct drm_private_state *state, |
733 | const struct drm_private_state_funcs *funcs) | |
734 | { | |
735 | memset(obj, 0, sizeof(*obj)); | |
736 | ||
b962a120 RC |
737 | drm_modeset_lock_init(&obj->lock); |
738 | ||
a4370c77 VS |
739 | obj->state = state; |
740 | obj->funcs = funcs; | |
b962a120 | 741 | list_add_tail(&obj->head, &dev->mode_config.privobj_list); |
a4370c77 VS |
742 | } |
743 | EXPORT_SYMBOL(drm_atomic_private_obj_init); | |
744 | ||
745 | /** | |
746 | * drm_atomic_private_obj_fini - finalize private object | |
747 | * @obj: private object | |
748 | * | |
749 | * Finalize the private object. | |
750 | */ | |
751 | void | |
752 | drm_atomic_private_obj_fini(struct drm_private_obj *obj) | |
753 | { | |
b962a120 | 754 | list_del(&obj->head); |
a4370c77 | 755 | obj->funcs->atomic_destroy_state(obj, obj->state); |
b962a120 | 756 | drm_modeset_lock_fini(&obj->lock); |
a4370c77 VS |
757 | } |
758 | EXPORT_SYMBOL(drm_atomic_private_obj_fini); | |
759 | ||
b430c27a PD |
760 | /** |
761 | * drm_atomic_get_private_obj_state - get private object state | |
762 | * @state: global atomic state | |
763 | * @obj: private object to get the state for | |
b430c27a PD |
764 | * |
765 | * This function returns the private object state for the given private object, | |
b962a120 RC |
766 | * allocating the state if needed. It will also grab the relevant private |
767 | * object lock to make sure that the state is consistent. | |
b430c27a PD |
768 | * |
769 | * RETURNS: | |
770 | * | |
771 | * Either the allocated state or the error code encoded into a pointer. | |
772 | */ | |
a4370c77 VS |
773 | struct drm_private_state * |
774 | drm_atomic_get_private_obj_state(struct drm_atomic_state *state, | |
775 | struct drm_private_obj *obj) | |
b430c27a | 776 | { |
b962a120 | 777 | int index, num_objs, i, ret; |
b430c27a PD |
778 | size_t size; |
779 | struct __drm_private_objs_state *arr; | |
a4370c77 | 780 | struct drm_private_state *obj_state; |
b430c27a PD |
781 | |
782 | for (i = 0; i < state->num_private_objs; i++) | |
a4370c77 VS |
783 | if (obj == state->private_objs[i].ptr) |
784 | return state->private_objs[i].state; | |
b430c27a | 785 | |
b962a120 RC |
786 | ret = drm_modeset_lock(&obj->lock, state->acquire_ctx); |
787 | if (ret) | |
788 | return ERR_PTR(ret); | |
789 | ||
b430c27a PD |
790 | num_objs = state->num_private_objs + 1; |
791 | size = sizeof(*state->private_objs) * num_objs; | |
792 | arr = krealloc(state->private_objs, size, GFP_KERNEL); | |
793 | if (!arr) | |
794 | return ERR_PTR(-ENOMEM); | |
795 | ||
796 | state->private_objs = arr; | |
797 | index = state->num_private_objs; | |
798 | memset(&state->private_objs[index], 0, sizeof(*state->private_objs)); | |
799 | ||
a4370c77 VS |
800 | obj_state = obj->funcs->atomic_duplicate_state(obj); |
801 | if (!obj_state) | |
b430c27a PD |
802 | return ERR_PTR(-ENOMEM); |
803 | ||
a4370c77 VS |
804 | state->private_objs[index].state = obj_state; |
805 | state->private_objs[index].old_state = obj->state; | |
806 | state->private_objs[index].new_state = obj_state; | |
807 | state->private_objs[index].ptr = obj; | |
e89ea355 | 808 | obj_state->state = state; |
a4370c77 | 809 | |
b430c27a PD |
810 | state->num_private_objs = num_objs; |
811 | ||
a4370c77 VS |
812 | DRM_DEBUG_ATOMIC("Added new private object %p state %p to %p\n", |
813 | obj, obj_state, state); | |
b430c27a | 814 | |
a4370c77 | 815 | return obj_state; |
b430c27a PD |
816 | } |
817 | EXPORT_SYMBOL(drm_atomic_get_private_obj_state); | |
818 | ||
9801a7ea ATC |
819 | /** |
820 | * drm_atomic_get_old_private_obj_state | |
821 | * @state: global atomic state object | |
822 | * @obj: private_obj to grab | |
823 | * | |
824 | * This function returns the old private object state for the given private_obj, | |
825 | * or NULL if the private_obj is not part of the global atomic state. | |
826 | */ | |
827 | struct drm_private_state * | |
828 | drm_atomic_get_old_private_obj_state(struct drm_atomic_state *state, | |
829 | struct drm_private_obj *obj) | |
830 | { | |
831 | int i; | |
832 | ||
833 | for (i = 0; i < state->num_private_objs; i++) | |
834 | if (obj == state->private_objs[i].ptr) | |
835 | return state->private_objs[i].old_state; | |
836 | ||
837 | return NULL; | |
838 | } | |
839 | EXPORT_SYMBOL(drm_atomic_get_old_private_obj_state); | |
840 | ||
841 | /** | |
842 | * drm_atomic_get_new_private_obj_state | |
843 | * @state: global atomic state object | |
844 | * @obj: private_obj to grab | |
845 | * | |
846 | * This function returns the new private object state for the given private_obj, | |
847 | * or NULL if the private_obj is not part of the global atomic state. | |
848 | */ | |
849 | struct drm_private_state * | |
850 | drm_atomic_get_new_private_obj_state(struct drm_atomic_state *state, | |
851 | struct drm_private_obj *obj) | |
852 | { | |
853 | int i; | |
854 | ||
855 | for (i = 0; i < state->num_private_objs; i++) | |
856 | if (obj == state->private_objs[i].ptr) | |
857 | return state->private_objs[i].new_state; | |
858 | ||
859 | return NULL; | |
860 | } | |
861 | EXPORT_SYMBOL(drm_atomic_get_new_private_obj_state); | |
862 | ||
1b27fbdd LP |
863 | /** |
864 | * drm_atomic_get_old_connector_for_encoder - Get old connector for an encoder | |
865 | * @state: Atomic state | |
866 | * @encoder: The encoder to fetch the connector state for | |
867 | * | |
868 | * This function finds and returns the connector that was connected to @encoder | |
869 | * as specified by the @state. | |
870 | * | |
871 | * If there is no connector in @state which previously had @encoder connected to | |
872 | * it, this function will return NULL. While this may seem like an invalid use | |
873 | * case, it is sometimes useful to differentiate commits which had no prior | |
874 | * connectors attached to @encoder vs ones that did (and to inspect their | |
875 | * state). This is especially true in enable hooks because the pipeline has | |
876 | * changed. | |
877 | * | |
878 | * Returns: The old connector connected to @encoder, or NULL if the encoder is | |
879 | * not connected. | |
880 | */ | |
881 | struct drm_connector * | |
882 | drm_atomic_get_old_connector_for_encoder(struct drm_atomic_state *state, | |
883 | struct drm_encoder *encoder) | |
884 | { | |
885 | struct drm_connector_state *conn_state; | |
886 | struct drm_connector *connector; | |
887 | unsigned int i; | |
888 | ||
889 | for_each_old_connector_in_state(state, connector, conn_state, i) { | |
890 | if (conn_state->best_encoder == encoder) | |
891 | return connector; | |
892 | } | |
893 | ||
894 | return NULL; | |
895 | } | |
896 | EXPORT_SYMBOL(drm_atomic_get_old_connector_for_encoder); | |
897 | ||
898 | /** | |
899 | * drm_atomic_get_new_connector_for_encoder - Get new connector for an encoder | |
900 | * @state: Atomic state | |
901 | * @encoder: The encoder to fetch the connector state for | |
902 | * | |
903 | * This function finds and returns the connector that will be connected to | |
904 | * @encoder as specified by the @state. | |
905 | * | |
906 | * If there is no connector in @state which will have @encoder connected to it, | |
907 | * this function will return NULL. While this may seem like an invalid use case, | |
908 | * it is sometimes useful to differentiate commits which have no connectors | |
909 | * attached to @encoder vs ones that do (and to inspect their state). This is | |
910 | * especially true in disable hooks because the pipeline will change. | |
911 | * | |
912 | * Returns: The new connector connected to @encoder, or NULL if the encoder is | |
913 | * not connected. | |
914 | */ | |
915 | struct drm_connector * | |
916 | drm_atomic_get_new_connector_for_encoder(struct drm_atomic_state *state, | |
917 | struct drm_encoder *encoder) | |
918 | { | |
919 | struct drm_connector_state *conn_state; | |
920 | struct drm_connector *connector; | |
921 | unsigned int i; | |
922 | ||
923 | for_each_new_connector_in_state(state, connector, conn_state, i) { | |
924 | if (conn_state->best_encoder == encoder) | |
925 | return connector; | |
926 | } | |
927 | ||
928 | return NULL; | |
929 | } | |
930 | EXPORT_SYMBOL(drm_atomic_get_new_connector_for_encoder); | |
931 | ||
cc4ceb48 DV |
932 | /** |
933 | * drm_atomic_get_connector_state - get connector state | |
934 | * @state: global atomic state object | |
935 | * @connector: connector to get state object for | |
936 | * | |
937 | * This function returns the connector state for the given connector, | |
938 | * allocating it if needed. It will also grab the relevant connector lock to | |
939 | * make sure that the state is consistent. | |
940 | * | |
941 | * Returns: | |
942 | * | |
943 | * Either the allocated state or the error code encoded into the pointer. When | |
944 | * the error is EDEADLK then the w/w mutex code has detected a deadlock and the | |
945 | * entire atomic sequence must be restarted. All other errors are fatal. | |
946 | */ | |
947 | struct drm_connector_state * | |
948 | drm_atomic_get_connector_state(struct drm_atomic_state *state, | |
949 | struct drm_connector *connector) | |
950 | { | |
951 | int ret, index; | |
952 | struct drm_mode_config *config = &connector->dev->mode_config; | |
953 | struct drm_connector_state *connector_state; | |
954 | ||
7f4eaa89 ML |
955 | WARN_ON(!state->acquire_ctx); |
956 | ||
c7eb76f4 DV |
957 | ret = drm_modeset_lock(&config->connection_mutex, state->acquire_ctx); |
958 | if (ret) | |
959 | return ERR_PTR(ret); | |
960 | ||
cc4ceb48 DV |
961 | index = drm_connector_index(connector); |
962 | ||
f52b69f1 | 963 | if (index >= state->num_connector) { |
63e83c1d | 964 | struct __drm_connnectors_state *c; |
5fff80bb ML |
965 | int alloc = max(index + 1, config->num_connector); |
966 | ||
32ce2553 BG |
967 | c = krealloc_array(state->connectors, alloc, |
968 | sizeof(*state->connectors), GFP_KERNEL); | |
5fff80bb ML |
969 | if (!c) |
970 | return ERR_PTR(-ENOMEM); | |
971 | ||
972 | state->connectors = c; | |
973 | memset(&state->connectors[state->num_connector], 0, | |
974 | sizeof(*state->connectors) * (alloc - state->num_connector)); | |
975 | ||
5fff80bb | 976 | state->num_connector = alloc; |
f52b69f1 DV |
977 | } |
978 | ||
63e83c1d DV |
979 | if (state->connectors[index].state) |
980 | return state->connectors[index].state; | |
cc4ceb48 | 981 | |
cc4ceb48 DV |
982 | connector_state = connector->funcs->atomic_duplicate_state(connector); |
983 | if (!connector_state) | |
984 | return ERR_PTR(-ENOMEM); | |
985 | ||
ad093607 | 986 | drm_connector_get(connector); |
63e83c1d | 987 | state->connectors[index].state = connector_state; |
581e49fe ML |
988 | state->connectors[index].old_state = connector->state; |
989 | state->connectors[index].new_state = connector_state; | |
63e83c1d | 990 | state->connectors[index].ptr = connector; |
cc4ceb48 DV |
991 | connector_state->state = state; |
992 | ||
6ac7c548 RK |
993 | DRM_DEBUG_ATOMIC("Added [CONNECTOR:%d:%s] %p state to %p\n", |
994 | connector->base.id, connector->name, | |
995 | connector_state, state); | |
cc4ceb48 DV |
996 | |
997 | if (connector_state->crtc) { | |
998 | struct drm_crtc_state *crtc_state; | |
999 | ||
1000 | crtc_state = drm_atomic_get_crtc_state(state, | |
1001 | connector_state->crtc); | |
1002 | if (IS_ERR(crtc_state)) | |
1003 | return ERR_CAST(crtc_state); | |
1004 | } | |
1005 | ||
1006 | return connector_state; | |
1007 | } | |
1008 | EXPORT_SYMBOL(drm_atomic_get_connector_state); | |
1009 | ||
fceffb32 RC |
1010 | static void drm_atomic_connector_print_state(struct drm_printer *p, |
1011 | const struct drm_connector_state *state) | |
1012 | { | |
1013 | struct drm_connector *connector = state->connector; | |
1014 | ||
1015 | drm_printf(p, "connector[%u]: %s\n", connector->base.id, connector->name); | |
1016 | drm_printf(p, "\tcrtc=%s\n", state->crtc ? state->crtc->name : "(null)"); | |
1452c25b | 1017 | drm_printf(p, "\tself_refresh_aware=%d\n", state->self_refresh_aware); |
fceffb32 | 1018 | |
8cbc5caf BS |
1019 | if (connector->connector_type == DRM_MODE_CONNECTOR_WRITEBACK) |
1020 | if (state->writeback_job && state->writeback_job->fb) | |
1021 | drm_printf(p, "\tfb=%d\n", state->writeback_job->fb->base.id); | |
1022 | ||
fceffb32 RC |
1023 | if (connector->funcs->atomic_print_state) |
1024 | connector->funcs->atomic_print_state(p, state); | |
1025 | } | |
1026 | ||
75146591 BB |
1027 | /** |
1028 | * drm_atomic_get_bridge_state - get bridge state | |
1029 | * @state: global atomic state object | |
1030 | * @bridge: bridge to get state object for | |
1031 | * | |
1032 | * This function returns the bridge state for the given bridge, allocating it | |
1033 | * if needed. It will also grab the relevant bridge lock to make sure that the | |
1034 | * state is consistent. | |
1035 | * | |
1036 | * Returns: | |
1037 | * | |
1038 | * Either the allocated state or the error code encoded into the pointer. When | |
1039 | * the error is EDEADLK then the w/w mutex code has detected a deadlock and the | |
1040 | * entire atomic sequence must be restarted. | |
1041 | */ | |
1042 | struct drm_bridge_state * | |
1043 | drm_atomic_get_bridge_state(struct drm_atomic_state *state, | |
1044 | struct drm_bridge *bridge) | |
1045 | { | |
1046 | struct drm_private_state *obj_state; | |
1047 | ||
1048 | obj_state = drm_atomic_get_private_obj_state(state, &bridge->base); | |
1049 | if (IS_ERR(obj_state)) | |
1050 | return ERR_CAST(obj_state); | |
1051 | ||
1052 | return drm_priv_to_bridge_state(obj_state); | |
1053 | } | |
1054 | EXPORT_SYMBOL(drm_atomic_get_bridge_state); | |
1055 | ||
1056 | /** | |
1057 | * drm_atomic_get_old_bridge_state - get old bridge state, if it exists | |
1058 | * @state: global atomic state object | |
1059 | * @bridge: bridge to grab | |
1060 | * | |
1061 | * This function returns the old bridge state for the given bridge, or NULL if | |
1062 | * the bridge is not part of the global atomic state. | |
1063 | */ | |
1064 | struct drm_bridge_state * | |
1065 | drm_atomic_get_old_bridge_state(struct drm_atomic_state *state, | |
1066 | struct drm_bridge *bridge) | |
1067 | { | |
1068 | struct drm_private_state *obj_state; | |
1069 | ||
1070 | obj_state = drm_atomic_get_old_private_obj_state(state, &bridge->base); | |
1071 | if (!obj_state) | |
1072 | return NULL; | |
1073 | ||
1074 | return drm_priv_to_bridge_state(obj_state); | |
1075 | } | |
1076 | EXPORT_SYMBOL(drm_atomic_get_old_bridge_state); | |
1077 | ||
1078 | /** | |
1079 | * drm_atomic_get_new_bridge_state - get new bridge state, if it exists | |
1080 | * @state: global atomic state object | |
1081 | * @bridge: bridge to grab | |
1082 | * | |
1083 | * This function returns the new bridge state for the given bridge, or NULL if | |
1084 | * the bridge is not part of the global atomic state. | |
1085 | */ | |
1086 | struct drm_bridge_state * | |
1087 | drm_atomic_get_new_bridge_state(struct drm_atomic_state *state, | |
1088 | struct drm_bridge *bridge) | |
1089 | { | |
1090 | struct drm_private_state *obj_state; | |
1091 | ||
1092 | obj_state = drm_atomic_get_new_private_obj_state(state, &bridge->base); | |
1093 | if (!obj_state) | |
1094 | return NULL; | |
1095 | ||
1096 | return drm_priv_to_bridge_state(obj_state); | |
1097 | } | |
1098 | EXPORT_SYMBOL(drm_atomic_get_new_bridge_state); | |
1099 | ||
1100 | /** | |
1101 | * drm_atomic_add_encoder_bridges - add bridges attached to an encoder | |
1102 | * @state: atomic state | |
1103 | * @encoder: DRM encoder | |
1104 | * | |
1105 | * This function adds all bridges attached to @encoder. This is needed to add | |
1106 | * bridge states to @state and make them available when | |
91ea8330 BB |
1107 | * &drm_bridge_funcs.atomic_check(), &drm_bridge_funcs.atomic_pre_enable(), |
1108 | * &drm_bridge_funcs.atomic_enable(), | |
1109 | * &drm_bridge_funcs.atomic_disable_post_disable() are called. | |
75146591 BB |
1110 | * |
1111 | * Returns: | |
1112 | * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK | |
1113 | * then the w/w mutex code has detected a deadlock and the entire atomic | |
1114 | * sequence must be restarted. All other errors are fatal. | |
1115 | */ | |
1116 | int | |
1117 | drm_atomic_add_encoder_bridges(struct drm_atomic_state *state, | |
1118 | struct drm_encoder *encoder) | |
1119 | { | |
1120 | struct drm_bridge_state *bridge_state; | |
1121 | struct drm_bridge *bridge; | |
1122 | ||
1123 | if (!encoder) | |
1124 | return 0; | |
1125 | ||
1126 | DRM_DEBUG_ATOMIC("Adding all bridges for [encoder:%d:%s] to %p\n", | |
1127 | encoder->base.id, encoder->name, state); | |
1128 | ||
1129 | drm_for_each_bridge_in_chain(encoder, bridge) { | |
1130 | /* Skip bridges that don't implement the atomic state hooks. */ | |
1131 | if (!bridge->funcs->atomic_duplicate_state) | |
1132 | continue; | |
1133 | ||
1134 | bridge_state = drm_atomic_get_bridge_state(state, bridge); | |
1135 | if (IS_ERR(bridge_state)) | |
1136 | return PTR_ERR(bridge_state); | |
1137 | } | |
1138 | ||
1139 | return 0; | |
1140 | } | |
1141 | EXPORT_SYMBOL(drm_atomic_add_encoder_bridges); | |
1142 | ||
cc4ceb48 | 1143 | /** |
42240c90 | 1144 | * drm_atomic_add_affected_connectors - add connectors for CRTC |
cc4ceb48 | 1145 | * @state: atomic state |
42240c90 | 1146 | * @crtc: DRM CRTC |
cc4ceb48 DV |
1147 | * |
1148 | * This function walks the current configuration and adds all connectors | |
1149 | * currently using @crtc to the atomic configuration @state. Note that this | |
1150 | * function must acquire the connection mutex. This can potentially cause | |
42240c90 | 1151 | * unneeded seralization if the update is just for the planes on one CRTC. Hence |
cc4ceb48 DV |
1152 | * drivers and helpers should only call this when really needed (e.g. when a |
1153 | * full modeset needs to happen due to some change). | |
1154 | * | |
1155 | * Returns: | |
1156 | * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK | |
1157 | * then the w/w mutex code has detected a deadlock and the entire atomic | |
1158 | * sequence must be restarted. All other errors are fatal. | |
1159 | */ | |
1160 | int | |
1161 | drm_atomic_add_affected_connectors(struct drm_atomic_state *state, | |
1162 | struct drm_crtc *crtc) | |
1163 | { | |
1164 | struct drm_mode_config *config = &state->dev->mode_config; | |
1165 | struct drm_connector *connector; | |
1166 | struct drm_connector_state *conn_state; | |
613051da | 1167 | struct drm_connector_list_iter conn_iter; |
5351bbdd | 1168 | struct drm_crtc_state *crtc_state; |
cc4ceb48 DV |
1169 | int ret; |
1170 | ||
5351bbdd ML |
1171 | crtc_state = drm_atomic_get_crtc_state(state, crtc); |
1172 | if (IS_ERR(crtc_state)) | |
1173 | return PTR_ERR(crtc_state); | |
1174 | ||
cc4ceb48 DV |
1175 | ret = drm_modeset_lock(&config->connection_mutex, state->acquire_ctx); |
1176 | if (ret) | |
1177 | return ret; | |
1178 | ||
fa3ab4c2 VS |
1179 | DRM_DEBUG_ATOMIC("Adding all current connectors for [CRTC:%d:%s] to %p\n", |
1180 | crtc->base.id, crtc->name, state); | |
cc4ceb48 DV |
1181 | |
1182 | /* | |
5351bbdd ML |
1183 | * Changed connectors are already in @state, so only need to look |
1184 | * at the connector_mask in crtc_state. | |
cc4ceb48 | 1185 | */ |
b982dab1 | 1186 | drm_connector_list_iter_begin(state->dev, &conn_iter); |
613051da | 1187 | drm_for_each_connector_iter(connector, &conn_iter) { |
73705732 | 1188 | if (!(crtc_state->connector_mask & drm_connector_mask(connector))) |
cc4ceb48 DV |
1189 | continue; |
1190 | ||
1191 | conn_state = drm_atomic_get_connector_state(state, connector); | |
613051da | 1192 | if (IS_ERR(conn_state)) { |
b982dab1 | 1193 | drm_connector_list_iter_end(&conn_iter); |
cc4ceb48 | 1194 | return PTR_ERR(conn_state); |
613051da | 1195 | } |
cc4ceb48 | 1196 | } |
b982dab1 | 1197 | drm_connector_list_iter_end(&conn_iter); |
cc4ceb48 DV |
1198 | |
1199 | return 0; | |
1200 | } | |
1201 | EXPORT_SYMBOL(drm_atomic_add_affected_connectors); | |
1202 | ||
e01e9f75 | 1203 | /** |
42240c90 | 1204 | * drm_atomic_add_affected_planes - add planes for CRTC |
e01e9f75 | 1205 | * @state: atomic state |
42240c90 | 1206 | * @crtc: DRM CRTC |
e01e9f75 ML |
1207 | * |
1208 | * This function walks the current configuration and adds all planes | |
1209 | * currently used by @crtc to the atomic configuration @state. This is useful | |
1210 | * when an atomic commit also needs to check all currently enabled plane on | |
1211 | * @crtc, e.g. when changing the mode. It's also useful when re-enabling a CRTC | |
1212 | * to avoid special code to force-enable all planes. | |
1213 | * | |
1214 | * Since acquiring a plane state will always also acquire the w/w mutex of the | |
1215 | * current CRTC for that plane (if there is any) adding all the plane states for | |
1216 | * a CRTC will not reduce parallism of atomic updates. | |
1217 | * | |
1218 | * Returns: | |
1219 | * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK | |
1220 | * then the w/w mutex code has detected a deadlock and the entire atomic | |
1221 | * sequence must be restarted. All other errors are fatal. | |
1222 | */ | |
1223 | int | |
1224 | drm_atomic_add_affected_planes(struct drm_atomic_state *state, | |
1225 | struct drm_crtc *crtc) | |
1226 | { | |
534903d6 VS |
1227 | const struct drm_crtc_state *old_crtc_state = |
1228 | drm_atomic_get_old_crtc_state(state, crtc); | |
e01e9f75 ML |
1229 | struct drm_plane *plane; |
1230 | ||
b4d93679 | 1231 | WARN_ON(!drm_atomic_get_new_crtc_state(state, crtc)); |
e01e9f75 | 1232 | |
b6f690ab VS |
1233 | DRM_DEBUG_ATOMIC("Adding all current planes for [CRTC:%d:%s] to %p\n", |
1234 | crtc->base.id, crtc->name, state); | |
1235 | ||
534903d6 | 1236 | drm_for_each_plane_mask(plane, state->dev, old_crtc_state->plane_mask) { |
e01e9f75 ML |
1237 | struct drm_plane_state *plane_state = |
1238 | drm_atomic_get_plane_state(state, plane); | |
1239 | ||
1240 | if (IS_ERR(plane_state)) | |
1241 | return PTR_ERR(plane_state); | |
1242 | } | |
1243 | return 0; | |
1244 | } | |
1245 | EXPORT_SYMBOL(drm_atomic_add_affected_planes); | |
1246 | ||
cc4ceb48 DV |
1247 | /** |
1248 | * drm_atomic_check_only - check whether a given config would work | |
1249 | * @state: atomic configuration to check | |
1250 | * | |
1251 | * Note that this function can return -EDEADLK if the driver needed to acquire | |
1252 | * more locks but encountered a deadlock. The caller must then do the usual w/w | |
1253 | * backoff dance and restart. All other errors are fatal. | |
1254 | * | |
1255 | * Returns: | |
1256 | * 0 on success, negative error code on failure. | |
1257 | */ | |
1258 | int drm_atomic_check_only(struct drm_atomic_state *state) | |
1259 | { | |
5e743737 RC |
1260 | struct drm_device *dev = state->dev; |
1261 | struct drm_mode_config *config = &dev->mode_config; | |
df63b999 | 1262 | struct drm_plane *plane; |
d9be05b7 VS |
1263 | struct drm_plane_state *old_plane_state; |
1264 | struct drm_plane_state *new_plane_state; | |
df63b999 | 1265 | struct drm_crtc *crtc; |
b2432adf VS |
1266 | struct drm_crtc_state *old_crtc_state; |
1267 | struct drm_crtc_state *new_crtc_state; | |
935774cd BS |
1268 | struct drm_connector *conn; |
1269 | struct drm_connector_state *conn_state; | |
fb6473a4 DV |
1270 | unsigned requested_crtc = 0; |
1271 | unsigned affected_crtc = 0; | |
5e743737 | 1272 | int i, ret = 0; |
cc4ceb48 | 1273 | |
17a38d9c | 1274 | DRM_DEBUG_ATOMIC("checking %p\n", state); |
cc4ceb48 | 1275 | |
fb6473a4 DV |
1276 | for_each_new_crtc_in_state(state, crtc, new_crtc_state, i) |
1277 | requested_crtc |= drm_crtc_mask(crtc); | |
1278 | ||
d9be05b7 VS |
1279 | for_each_oldnew_plane_in_state(state, plane, old_plane_state, new_plane_state, i) { |
1280 | ret = drm_atomic_plane_check(old_plane_state, new_plane_state); | |
5e743737 | 1281 | if (ret) { |
9f4c97a2 VS |
1282 | DRM_DEBUG_ATOMIC("[PLANE:%d:%s] atomic core check failed\n", |
1283 | plane->base.id, plane->name); | |
5e743737 RC |
1284 | return ret; |
1285 | } | |
1286 | } | |
1287 | ||
b2432adf VS |
1288 | for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) { |
1289 | ret = drm_atomic_crtc_check(old_crtc_state, new_crtc_state); | |
5e743737 | 1290 | if (ret) { |
fa3ab4c2 VS |
1291 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] atomic core check failed\n", |
1292 | crtc->base.id, crtc->name); | |
5e743737 RC |
1293 | return ret; |
1294 | } | |
1295 | } | |
1296 | ||
935774cd BS |
1297 | for_each_new_connector_in_state(state, conn, conn_state, i) { |
1298 | ret = drm_atomic_connector_check(conn, conn_state); | |
1299 | if (ret) { | |
1300 | DRM_DEBUG_ATOMIC("[CONNECTOR:%d:%s] atomic core check failed\n", | |
1301 | conn->base.id, conn->name); | |
1302 | return ret; | |
1303 | } | |
1304 | } | |
1305 | ||
14d4e522 | 1306 | if (config->funcs->atomic_check) { |
5e743737 RC |
1307 | ret = config->funcs->atomic_check(state->dev, state); |
1308 | ||
14d4e522 LP |
1309 | if (ret) { |
1310 | DRM_DEBUG_ATOMIC("atomic driver check for %p failed: %d\n", | |
1311 | state, ret); | |
1312 | return ret; | |
1313 | } | |
1314 | } | |
a0ffc51e | 1315 | |
d34f20d6 | 1316 | if (!state->allow_modeset) { |
b2432adf VS |
1317 | for_each_new_crtc_in_state(state, crtc, new_crtc_state, i) { |
1318 | if (drm_atomic_crtc_needs_modeset(new_crtc_state)) { | |
fa3ab4c2 VS |
1319 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] requires full modeset\n", |
1320 | crtc->base.id, crtc->name); | |
d34f20d6 RC |
1321 | return -EINVAL; |
1322 | } | |
1323 | } | |
1324 | } | |
1325 | ||
fb6473a4 DV |
1326 | for_each_new_crtc_in_state(state, crtc, new_crtc_state, i) |
1327 | affected_crtc |= drm_crtc_mask(crtc); | |
1328 | ||
1329 | /* | |
1330 | * For commits that allow modesets drivers can add other CRTCs to the | |
1331 | * atomic commit, e.g. when they need to reallocate global resources. | |
1332 | * This can cause spurious EBUSY, which robs compositors of a very | |
1333 | * effective sanity check for their drawing loop. Therefor only allow | |
1334 | * drivers to add unrelated CRTC states for modeset commits. | |
1335 | * | |
1336 | * FIXME: Should add affected_crtc mask to the ATOMIC IOCTL as an output | |
1337 | * so compositors know what's going on. | |
1338 | */ | |
1339 | if (affected_crtc != requested_crtc) { | |
1340 | DRM_DEBUG_ATOMIC("driver added CRTC to commit: requested 0x%x, affected 0x%0x\n", | |
1341 | requested_crtc, affected_crtc); | |
1342 | WARN(!state->allow_modeset, "adding CRTC not allowed without modesets: requested 0x%x, affected 0x%0x\n", | |
1343 | requested_crtc, affected_crtc); | |
1344 | } | |
1345 | ||
a0ffc51e | 1346 | return 0; |
cc4ceb48 DV |
1347 | } |
1348 | EXPORT_SYMBOL(drm_atomic_check_only); | |
1349 | ||
1350 | /** | |
1351 | * drm_atomic_commit - commit configuration atomically | |
1352 | * @state: atomic configuration to check | |
1353 | * | |
1354 | * Note that this function can return -EDEADLK if the driver needed to acquire | |
1355 | * more locks but encountered a deadlock. The caller must then do the usual w/w | |
1356 | * backoff dance and restart. All other errors are fatal. | |
1357 | * | |
76fede2f ML |
1358 | * This function will take its own reference on @state. |
1359 | * Callers should always release their reference with drm_atomic_state_put(). | |
cc4ceb48 DV |
1360 | * |
1361 | * Returns: | |
1362 | * 0 on success, negative error code on failure. | |
1363 | */ | |
1364 | int drm_atomic_commit(struct drm_atomic_state *state) | |
1365 | { | |
1366 | struct drm_mode_config *config = &state->dev->mode_config; | |
1367 | int ret; | |
1368 | ||
1369 | ret = drm_atomic_check_only(state); | |
1370 | if (ret) | |
1371 | return ret; | |
1372 | ||
a0752d4a | 1373 | DRM_DEBUG_ATOMIC("committing %p\n", state); |
cc4ceb48 DV |
1374 | |
1375 | return config->funcs->atomic_commit(state->dev, state, false); | |
1376 | } | |
1377 | EXPORT_SYMBOL(drm_atomic_commit); | |
1378 | ||
1379 | /** | |
d574528a | 1380 | * drm_atomic_nonblocking_commit - atomic nonblocking commit |
cc4ceb48 DV |
1381 | * @state: atomic configuration to check |
1382 | * | |
1383 | * Note that this function can return -EDEADLK if the driver needed to acquire | |
1384 | * more locks but encountered a deadlock. The caller must then do the usual w/w | |
1385 | * backoff dance and restart. All other errors are fatal. | |
1386 | * | |
76fede2f ML |
1387 | * This function will take its own reference on @state. |
1388 | * Callers should always release their reference with drm_atomic_state_put(). | |
cc4ceb48 DV |
1389 | * |
1390 | * Returns: | |
1391 | * 0 on success, negative error code on failure. | |
1392 | */ | |
b837ba0a | 1393 | int drm_atomic_nonblocking_commit(struct drm_atomic_state *state) |
cc4ceb48 DV |
1394 | { |
1395 | struct drm_mode_config *config = &state->dev->mode_config; | |
1396 | int ret; | |
1397 | ||
1398 | ret = drm_atomic_check_only(state); | |
1399 | if (ret) | |
1400 | return ret; | |
1401 | ||
a0752d4a | 1402 | DRM_DEBUG_ATOMIC("committing %p nonblocking\n", state); |
cc4ceb48 DV |
1403 | |
1404 | return config->funcs->atomic_commit(state->dev, state, true); | |
1405 | } | |
b837ba0a | 1406 | EXPORT_SYMBOL(drm_atomic_nonblocking_commit); |
d34f20d6 | 1407 | |
df737895 NT |
1408 | /* just used from drm-client and atomic-helper: */ |
1409 | int __drm_atomic_helper_disable_plane(struct drm_plane *plane, | |
1410 | struct drm_plane_state *plane_state) | |
1411 | { | |
1412 | int ret; | |
1413 | ||
1414 | ret = drm_atomic_set_crtc_for_plane(plane_state, NULL); | |
1415 | if (ret != 0) | |
1416 | return ret; | |
1417 | ||
1418 | drm_atomic_set_fb_for_plane(plane_state, NULL); | |
1419 | plane_state->crtc_x = 0; | |
1420 | plane_state->crtc_y = 0; | |
1421 | plane_state->crtc_w = 0; | |
1422 | plane_state->crtc_h = 0; | |
1423 | plane_state->src_x = 0; | |
1424 | plane_state->src_y = 0; | |
1425 | plane_state->src_w = 0; | |
1426 | plane_state->src_h = 0; | |
1427 | ||
1428 | return 0; | |
1429 | } | |
1430 | EXPORT_SYMBOL(__drm_atomic_helper_disable_plane); | |
1431 | ||
1432 | static int update_output_state(struct drm_atomic_state *state, | |
1433 | struct drm_mode_set *set) | |
1434 | { | |
1435 | struct drm_device *dev = set->crtc->dev; | |
1436 | struct drm_crtc *crtc; | |
1437 | struct drm_crtc_state *new_crtc_state; | |
1438 | struct drm_connector *connector; | |
1439 | struct drm_connector_state *new_conn_state; | |
1440 | int ret, i; | |
1441 | ||
1442 | ret = drm_modeset_lock(&dev->mode_config.connection_mutex, | |
1443 | state->acquire_ctx); | |
1444 | if (ret) | |
1445 | return ret; | |
1446 | ||
1447 | /* First disable all connectors on the target crtc. */ | |
1448 | ret = drm_atomic_add_affected_connectors(state, set->crtc); | |
1449 | if (ret) | |
1450 | return ret; | |
1451 | ||
1452 | for_each_new_connector_in_state(state, connector, new_conn_state, i) { | |
1453 | if (new_conn_state->crtc == set->crtc) { | |
1454 | ret = drm_atomic_set_crtc_for_connector(new_conn_state, | |
1455 | NULL); | |
1456 | if (ret) | |
1457 | return ret; | |
1458 | ||
1459 | /* Make sure legacy setCrtc always re-trains */ | |
1460 | new_conn_state->link_status = DRM_LINK_STATUS_GOOD; | |
1461 | } | |
1462 | } | |
1463 | ||
1464 | /* Then set all connectors from set->connectors on the target crtc */ | |
1465 | for (i = 0; i < set->num_connectors; i++) { | |
1466 | new_conn_state = drm_atomic_get_connector_state(state, | |
1467 | set->connectors[i]); | |
1468 | if (IS_ERR(new_conn_state)) | |
1469 | return PTR_ERR(new_conn_state); | |
1470 | ||
1471 | ret = drm_atomic_set_crtc_for_connector(new_conn_state, | |
1472 | set->crtc); | |
1473 | if (ret) | |
1474 | return ret; | |
1475 | } | |
1476 | ||
1477 | for_each_new_crtc_in_state(state, crtc, new_crtc_state, i) { | |
1478 | /* | |
1479 | * Don't update ->enable for the CRTC in the set_config request, | |
1480 | * since a mismatch would indicate a bug in the upper layers. | |
1481 | * The actual modeset code later on will catch any | |
1482 | * inconsistencies here. | |
1483 | */ | |
1484 | if (crtc == set->crtc) | |
1485 | continue; | |
1486 | ||
1487 | if (!new_crtc_state->connector_mask) { | |
1488 | ret = drm_atomic_set_mode_prop_for_crtc(new_crtc_state, | |
1489 | NULL); | |
1490 | if (ret < 0) | |
1491 | return ret; | |
1492 | ||
1493 | new_crtc_state->active = false; | |
1494 | } | |
1495 | } | |
1496 | ||
1497 | return 0; | |
1498 | } | |
1499 | ||
1500 | /* just used from drm-client and atomic-helper: */ | |
1501 | int __drm_atomic_helper_set_config(struct drm_mode_set *set, | |
1502 | struct drm_atomic_state *state) | |
1503 | { | |
1504 | struct drm_crtc_state *crtc_state; | |
1505 | struct drm_plane_state *primary_state; | |
1506 | struct drm_crtc *crtc = set->crtc; | |
1507 | int hdisplay, vdisplay; | |
1508 | int ret; | |
1509 | ||
1510 | crtc_state = drm_atomic_get_crtc_state(state, crtc); | |
1511 | if (IS_ERR(crtc_state)) | |
1512 | return PTR_ERR(crtc_state); | |
1513 | ||
1514 | primary_state = drm_atomic_get_plane_state(state, crtc->primary); | |
1515 | if (IS_ERR(primary_state)) | |
1516 | return PTR_ERR(primary_state); | |
1517 | ||
1518 | if (!set->mode) { | |
1519 | WARN_ON(set->fb); | |
1520 | WARN_ON(set->num_connectors); | |
1521 | ||
1522 | ret = drm_atomic_set_mode_for_crtc(crtc_state, NULL); | |
1523 | if (ret != 0) | |
1524 | return ret; | |
1525 | ||
1526 | crtc_state->active = false; | |
1527 | ||
1528 | ret = drm_atomic_set_crtc_for_plane(primary_state, NULL); | |
1529 | if (ret != 0) | |
1530 | return ret; | |
1531 | ||
1532 | drm_atomic_set_fb_for_plane(primary_state, NULL); | |
1533 | ||
1534 | goto commit; | |
1535 | } | |
1536 | ||
1537 | WARN_ON(!set->fb); | |
1538 | WARN_ON(!set->num_connectors); | |
1539 | ||
1540 | ret = drm_atomic_set_mode_for_crtc(crtc_state, set->mode); | |
1541 | if (ret != 0) | |
1542 | return ret; | |
1543 | ||
1544 | crtc_state->active = true; | |
1545 | ||
1546 | ret = drm_atomic_set_crtc_for_plane(primary_state, crtc); | |
1547 | if (ret != 0) | |
1548 | return ret; | |
1549 | ||
1550 | drm_mode_get_hv_timing(set->mode, &hdisplay, &vdisplay); | |
1551 | ||
1552 | drm_atomic_set_fb_for_plane(primary_state, set->fb); | |
1553 | primary_state->crtc_x = 0; | |
1554 | primary_state->crtc_y = 0; | |
1555 | primary_state->crtc_w = hdisplay; | |
1556 | primary_state->crtc_h = vdisplay; | |
1557 | primary_state->src_x = set->x << 16; | |
1558 | primary_state->src_y = set->y << 16; | |
1559 | if (drm_rotation_90_or_270(primary_state->rotation)) { | |
1560 | primary_state->src_w = vdisplay << 16; | |
1561 | primary_state->src_h = hdisplay << 16; | |
1562 | } else { | |
1563 | primary_state->src_w = hdisplay << 16; | |
1564 | primary_state->src_h = vdisplay << 16; | |
1565 | } | |
1566 | ||
1567 | commit: | |
1568 | ret = update_output_state(state, set); | |
1569 | if (ret) | |
1570 | return ret; | |
1571 | ||
1572 | return 0; | |
1573 | } | |
1574 | EXPORT_SYMBOL(__drm_atomic_helper_set_config); | |
1575 | ||
72fdb40c | 1576 | void drm_atomic_print_state(const struct drm_atomic_state *state) |
fceffb32 RC |
1577 | { |
1578 | struct drm_printer p = drm_info_printer(state->dev->dev); | |
1579 | struct drm_plane *plane; | |
1580 | struct drm_plane_state *plane_state; | |
1581 | struct drm_crtc *crtc; | |
1582 | struct drm_crtc_state *crtc_state; | |
1583 | struct drm_connector *connector; | |
1584 | struct drm_connector_state *connector_state; | |
1585 | int i; | |
1586 | ||
1587 | DRM_DEBUG_ATOMIC("checking %p\n", state); | |
1588 | ||
5721a380 | 1589 | for_each_new_plane_in_state(state, plane, plane_state, i) |
fceffb32 RC |
1590 | drm_atomic_plane_print_state(&p, plane_state); |
1591 | ||
5721a380 | 1592 | for_each_new_crtc_in_state(state, crtc, crtc_state, i) |
fceffb32 RC |
1593 | drm_atomic_crtc_print_state(&p, crtc_state); |
1594 | ||
5721a380 | 1595 | for_each_new_connector_in_state(state, connector, connector_state, i) |
fceffb32 RC |
1596 | drm_atomic_connector_print_state(&p, connector_state); |
1597 | } | |
1598 | ||
c2d85564 DV |
1599 | static void __drm_state_dump(struct drm_device *dev, struct drm_printer *p, |
1600 | bool take_locks) | |
6559c901 RC |
1601 | { |
1602 | struct drm_mode_config *config = &dev->mode_config; | |
1603 | struct drm_plane *plane; | |
1604 | struct drm_crtc *crtc; | |
1605 | struct drm_connector *connector; | |
613051da | 1606 | struct drm_connector_list_iter conn_iter; |
6559c901 | 1607 | |
3c499ea0 | 1608 | if (!drm_drv_uses_atomic_modeset(dev)) |
6559c901 RC |
1609 | return; |
1610 | ||
c2d85564 DV |
1611 | list_for_each_entry(plane, &config->plane_list, head) { |
1612 | if (take_locks) | |
1613 | drm_modeset_lock(&plane->mutex, NULL); | |
6559c901 | 1614 | drm_atomic_plane_print_state(p, plane->state); |
c2d85564 DV |
1615 | if (take_locks) |
1616 | drm_modeset_unlock(&plane->mutex); | |
1617 | } | |
6559c901 | 1618 | |
c2d85564 DV |
1619 | list_for_each_entry(crtc, &config->crtc_list, head) { |
1620 | if (take_locks) | |
1621 | drm_modeset_lock(&crtc->mutex, NULL); | |
6559c901 | 1622 | drm_atomic_crtc_print_state(p, crtc->state); |
c2d85564 DV |
1623 | if (take_locks) |
1624 | drm_modeset_unlock(&crtc->mutex); | |
1625 | } | |
6559c901 | 1626 | |
b982dab1 | 1627 | drm_connector_list_iter_begin(dev, &conn_iter); |
c2d85564 DV |
1628 | if (take_locks) |
1629 | drm_modeset_lock(&dev->mode_config.connection_mutex, NULL); | |
613051da | 1630 | drm_for_each_connector_iter(connector, &conn_iter) |
6559c901 | 1631 | drm_atomic_connector_print_state(p, connector->state); |
c2d85564 DV |
1632 | if (take_locks) |
1633 | drm_modeset_unlock(&dev->mode_config.connection_mutex); | |
b982dab1 | 1634 | drm_connector_list_iter_end(&conn_iter); |
6559c901 | 1635 | } |
c2d85564 DV |
1636 | |
1637 | /** | |
1638 | * drm_state_dump - dump entire device atomic state | |
1639 | * @dev: the drm device | |
1640 | * @p: where to print the state to | |
1641 | * | |
1642 | * Just for debugging. Drivers might want an option to dump state | |
1643 | * to dmesg in case of error irq's. (Hint, you probably want to | |
1644 | * ratelimit this!) | |
1645 | * | |
bd1fbef7 DV |
1646 | * The caller must wrap this drm_modeset_lock_all_ctx() and |
1647 | * drm_modeset_drop_locks(). If this is called from error irq handler, it should | |
1648 | * not be enabled by default - if you are debugging errors you might | |
1649 | * not care that this is racey, but calling this without all modeset locks held | |
1650 | * is inherently unsafe. | |
c2d85564 DV |
1651 | */ |
1652 | void drm_state_dump(struct drm_device *dev, struct drm_printer *p) | |
1653 | { | |
1654 | __drm_state_dump(dev, p, false); | |
1655 | } | |
6559c901 RC |
1656 | EXPORT_SYMBOL(drm_state_dump); |
1657 | ||
1658 | #ifdef CONFIG_DEBUG_FS | |
1659 | static int drm_state_info(struct seq_file *m, void *data) | |
1660 | { | |
1661 | struct drm_info_node *node = (struct drm_info_node *) m->private; | |
1662 | struct drm_device *dev = node->minor->dev; | |
1663 | struct drm_printer p = drm_seq_file_printer(m); | |
1664 | ||
c2d85564 | 1665 | __drm_state_dump(dev, &p, true); |
6559c901 RC |
1666 | |
1667 | return 0; | |
1668 | } | |
1669 | ||
1670 | /* any use in debugfs files to dump individual planes/crtc/etc? */ | |
1671 | static const struct drm_info_list drm_atomic_debugfs_list[] = { | |
1672 | {"state", drm_state_info, 0}, | |
1673 | }; | |
1674 | ||
7ce84471 | 1675 | void drm_atomic_debugfs_init(struct drm_minor *minor) |
6559c901 | 1676 | { |
e196e140 WK |
1677 | drm_debugfs_create_files(drm_atomic_debugfs_list, |
1678 | ARRAY_SIZE(drm_atomic_debugfs_list), | |
1679 | minor->debugfs_root, minor); | |
6559c901 RC |
1680 | } |
1681 | #endif |