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f453ba04 DA |
1 | /* |
2 | * Copyright (c) 2006-2008 Intel Corporation | |
3 | * Copyright (c) 2007 Dave Airlie <airlied@linux.ie> | |
4 | * | |
5 | * DRM core CRTC related functions | |
6 | * | |
7 | * Permission to use, copy, modify, distribute, and sell this software and its | |
8 | * documentation for any purpose is hereby granted without fee, provided that | |
9 | * the above copyright notice appear in all copies and that both that copyright | |
10 | * notice and this permission notice appear in supporting documentation, and | |
11 | * that the name of the copyright holders not be used in advertising or | |
12 | * publicity pertaining to distribution of the software without specific, | |
13 | * written prior permission. The copyright holders make no representations | |
14 | * about the suitability of this software for any purpose. It is provided "as | |
15 | * is" without express or implied warranty. | |
16 | * | |
17 | * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, | |
18 | * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO | |
19 | * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR | |
20 | * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, | |
21 | * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER | |
22 | * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE | |
23 | * OF THIS SOFTWARE. | |
24 | * | |
25 | * Authors: | |
26 | * Keith Packard | |
27 | * Eric Anholt <eric@anholt.net> | |
28 | * Dave Airlie <airlied@linux.ie> | |
29 | * Jesse Barnes <jesse.barnes@intel.com> | |
30 | */ | |
31 | ||
32 | #include "drmP.h" | |
33 | #include "drm_crtc.h" | |
34 | #include "drm_crtc_helper.h" | |
35 | ||
6714977b | 36 | static void drm_mode_validate_flag(struct drm_connector *connector, |
37 | int flags) | |
38 | { | |
39 | struct drm_display_mode *mode, *t; | |
40 | ||
41 | if (flags == (DRM_MODE_FLAG_DBLSCAN | DRM_MODE_FLAG_INTERLACE)) | |
42 | return; | |
43 | ||
44 | list_for_each_entry_safe(mode, t, &connector->modes, head) { | |
45 | if ((mode->flags & DRM_MODE_FLAG_INTERLACE) && | |
46 | !(flags & DRM_MODE_FLAG_INTERLACE)) | |
47 | mode->status = MODE_NO_INTERLACE; | |
48 | if ((mode->flags & DRM_MODE_FLAG_DBLSCAN) && | |
49 | !(flags & DRM_MODE_FLAG_DBLSCAN)) | |
50 | mode->status = MODE_NO_DBLESCAN; | |
51 | } | |
52 | ||
53 | return; | |
54 | } | |
55 | ||
f453ba04 DA |
56 | /** |
57 | * drm_helper_probe_connector_modes - get complete set of display modes | |
58 | * @dev: DRM device | |
59 | * @maxX: max width for modes | |
60 | * @maxY: max height for modes | |
61 | * | |
62 | * LOCKING: | |
63 | * Caller must hold mode config lock. | |
64 | * | |
65 | * Based on @dev's mode_config layout, scan all the connectors and try to detect | |
66 | * modes on them. Modes will first be added to the connector's probed_modes | |
67 | * list, then culled (based on validity and the @maxX, @maxY parameters) and | |
68 | * put into the normal modes list. | |
69 | * | |
70 | * Intended to be used either at bootup time or when major configuration | |
71 | * changes have occurred. | |
72 | * | |
73 | * FIXME: take into account monitor limits | |
40a518d9 JB |
74 | * |
75 | * RETURNS: | |
76 | * Number of modes found on @connector. | |
f453ba04 | 77 | */ |
40a518d9 JB |
78 | int drm_helper_probe_single_connector_modes(struct drm_connector *connector, |
79 | uint32_t maxX, uint32_t maxY) | |
f453ba04 DA |
80 | { |
81 | struct drm_device *dev = connector->dev; | |
82 | struct drm_display_mode *mode, *t; | |
83 | struct drm_connector_helper_funcs *connector_funcs = | |
84 | connector->helper_private; | |
40a518d9 | 85 | int count = 0; |
6714977b | 86 | int mode_flags = 0; |
f453ba04 | 87 | |
58367ed6 | 88 | DRM_DEBUG_KMS("%s\n", drm_get_connector_name(connector)); |
f453ba04 DA |
89 | /* set all modes to the unverified state */ |
90 | list_for_each_entry_safe(mode, t, &connector->modes, head) | |
91 | mode->status = MODE_UNVERIFIED; | |
92 | ||
93 | connector->status = connector->funcs->detect(connector); | |
94 | ||
95 | if (connector->status == connector_status_disconnected) { | |
58367ed6 | 96 | DRM_DEBUG_KMS("%s is disconnected\n", |
f453ba04 | 97 | drm_get_connector_name(connector)); |
620f3781 | 98 | goto prune; |
f453ba04 DA |
99 | } |
100 | ||
40a518d9 | 101 | count = (*connector_funcs->get_modes)(connector); |
50fe4cfd | 102 | if (!count) { |
103 | count = drm_add_modes_noedid(connector, 800, 600); | |
104 | if (!count) | |
105 | return 0; | |
106 | } | |
f453ba04 | 107 | |
40a518d9 | 108 | drm_mode_connector_list_update(connector); |
f453ba04 DA |
109 | |
110 | if (maxX && maxY) | |
111 | drm_mode_validate_size(dev, &connector->modes, maxX, | |
112 | maxY, 0); | |
6714977b | 113 | |
114 | if (connector->interlace_allowed) | |
115 | mode_flags |= DRM_MODE_FLAG_INTERLACE; | |
116 | if (connector->doublescan_allowed) | |
117 | mode_flags |= DRM_MODE_FLAG_DBLSCAN; | |
118 | drm_mode_validate_flag(connector, mode_flags); | |
119 | ||
f453ba04 DA |
120 | list_for_each_entry_safe(mode, t, &connector->modes, head) { |
121 | if (mode->status == MODE_OK) | |
122 | mode->status = connector_funcs->mode_valid(connector, | |
123 | mode); | |
124 | } | |
125 | ||
620f3781 | 126 | prune: |
f453ba04 DA |
127 | drm_mode_prune_invalid(dev, &connector->modes, true); |
128 | ||
40a518d9 JB |
129 | if (list_empty(&connector->modes)) |
130 | return 0; | |
f453ba04 DA |
131 | |
132 | drm_mode_sort(&connector->modes); | |
133 | ||
58367ed6 ZY |
134 | DRM_DEBUG_KMS("Probed modes for %s\n", |
135 | drm_get_connector_name(connector)); | |
f453ba04 DA |
136 | list_for_each_entry_safe(mode, t, &connector->modes, head) { |
137 | mode->vrefresh = drm_mode_vrefresh(mode); | |
138 | ||
139 | drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V); | |
140 | drm_mode_debug_printmodeline(mode); | |
141 | } | |
40a518d9 JB |
142 | |
143 | return count; | |
f453ba04 DA |
144 | } |
145 | EXPORT_SYMBOL(drm_helper_probe_single_connector_modes); | |
146 | ||
40a518d9 | 147 | int drm_helper_probe_connector_modes(struct drm_device *dev, uint32_t maxX, |
f453ba04 DA |
148 | uint32_t maxY) |
149 | { | |
150 | struct drm_connector *connector; | |
40a518d9 | 151 | int count = 0; |
f453ba04 DA |
152 | |
153 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
40a518d9 JB |
154 | count += drm_helper_probe_single_connector_modes(connector, |
155 | maxX, maxY); | |
f453ba04 | 156 | } |
40a518d9 JB |
157 | |
158 | return count; | |
f453ba04 DA |
159 | } |
160 | EXPORT_SYMBOL(drm_helper_probe_connector_modes); | |
161 | ||
c9fb15f6 KP |
162 | /** |
163 | * drm_helper_encoder_in_use - check if a given encoder is in use | |
164 | * @encoder: encoder to check | |
165 | * | |
166 | * LOCKING: | |
167 | * Caller must hold mode config lock. | |
168 | * | |
169 | * Walk @encoders's DRM device's mode_config and see if it's in use. | |
170 | * | |
171 | * RETURNS: | |
172 | * True if @encoder is part of the mode_config, false otherwise. | |
173 | */ | |
174 | bool drm_helper_encoder_in_use(struct drm_encoder *encoder) | |
175 | { | |
176 | struct drm_connector *connector; | |
177 | struct drm_device *dev = encoder->dev; | |
178 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) | |
179 | if (connector->encoder == encoder) | |
180 | return true; | |
181 | return false; | |
182 | } | |
183 | EXPORT_SYMBOL(drm_helper_encoder_in_use); | |
184 | ||
f453ba04 DA |
185 | /** |
186 | * drm_helper_crtc_in_use - check if a given CRTC is in a mode_config | |
187 | * @crtc: CRTC to check | |
188 | * | |
189 | * LOCKING: | |
190 | * Caller must hold mode config lock. | |
191 | * | |
192 | * Walk @crtc's DRM device's mode_config and see if it's in use. | |
193 | * | |
194 | * RETURNS: | |
195 | * True if @crtc is part of the mode_config, false otherwise. | |
196 | */ | |
197 | bool drm_helper_crtc_in_use(struct drm_crtc *crtc) | |
198 | { | |
199 | struct drm_encoder *encoder; | |
200 | struct drm_device *dev = crtc->dev; | |
201 | /* FIXME: Locking around list access? */ | |
202 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) | |
c9fb15f6 | 203 | if (encoder->crtc == crtc && drm_helper_encoder_in_use(encoder)) |
f453ba04 DA |
204 | return true; |
205 | return false; | |
206 | } | |
207 | EXPORT_SYMBOL(drm_helper_crtc_in_use); | |
208 | ||
209 | /** | |
210 | * drm_disable_unused_functions - disable unused objects | |
211 | * @dev: DRM device | |
212 | * | |
213 | * LOCKING: | |
214 | * Caller must hold mode config lock. | |
215 | * | |
216 | * If an connector or CRTC isn't part of @dev's mode_config, it can be disabled | |
217 | * by calling its dpms function, which should power it off. | |
218 | */ | |
219 | void drm_helper_disable_unused_functions(struct drm_device *dev) | |
220 | { | |
221 | struct drm_encoder *encoder; | |
a3a0544b | 222 | struct drm_connector *connector; |
f453ba04 DA |
223 | struct drm_encoder_helper_funcs *encoder_funcs; |
224 | struct drm_crtc *crtc; | |
225 | ||
a3a0544b DA |
226 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
227 | if (!connector->encoder) | |
228 | continue; | |
229 | if (connector->status == connector_status_disconnected) | |
230 | connector->encoder = NULL; | |
231 | } | |
232 | ||
f453ba04 DA |
233 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
234 | encoder_funcs = encoder->helper_private; | |
a3a0544b DA |
235 | if (!drm_helper_encoder_in_use(encoder)) { |
236 | if (encoder_funcs->disable) | |
237 | (*encoder_funcs->disable)(encoder); | |
238 | else | |
239 | (*encoder_funcs->dpms)(encoder, DRM_MODE_DPMS_OFF); | |
9c552dd7 DA |
240 | /* disconnector encoder from any connector */ |
241 | encoder->crtc = NULL; | |
a3a0544b | 242 | } |
f453ba04 DA |
243 | } |
244 | ||
245 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
246 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; | |
247 | crtc->enabled = drm_helper_crtc_in_use(crtc); | |
248 | if (!crtc->enabled) { | |
249 | crtc_funcs->dpms(crtc, DRM_MODE_DPMS_OFF); | |
250 | crtc->fb = NULL; | |
251 | } | |
252 | } | |
253 | } | |
254 | EXPORT_SYMBOL(drm_helper_disable_unused_functions); | |
255 | ||
256 | static struct drm_display_mode *drm_has_preferred_mode(struct drm_connector *connector, int width, int height) | |
257 | { | |
258 | struct drm_display_mode *mode; | |
259 | ||
260 | list_for_each_entry(mode, &connector->modes, head) { | |
261 | if (drm_mode_width(mode) > width || | |
262 | drm_mode_height(mode) > height) | |
263 | continue; | |
264 | if (mode->type & DRM_MODE_TYPE_PREFERRED) | |
265 | return mode; | |
266 | } | |
267 | return NULL; | |
268 | } | |
269 | ||
270 | static bool drm_connector_enabled(struct drm_connector *connector, bool strict) | |
271 | { | |
272 | bool enable; | |
273 | ||
274 | if (strict) { | |
275 | enable = connector->status == connector_status_connected; | |
276 | } else { | |
277 | enable = connector->status != connector_status_disconnected; | |
278 | } | |
279 | return enable; | |
280 | } | |
281 | ||
282 | static void drm_enable_connectors(struct drm_device *dev, bool *enabled) | |
283 | { | |
284 | bool any_enabled = false; | |
285 | struct drm_connector *connector; | |
286 | int i = 0; | |
287 | ||
288 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
289 | enabled[i] = drm_connector_enabled(connector, true); | |
58367ed6 | 290 | DRM_DEBUG_KMS("connector %d enabled? %s\n", connector->base.id, |
40a518d9 | 291 | enabled[i] ? "yes" : "no"); |
f453ba04 DA |
292 | any_enabled |= enabled[i]; |
293 | i++; | |
294 | } | |
295 | ||
296 | if (any_enabled) | |
297 | return; | |
298 | ||
299 | i = 0; | |
300 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
301 | enabled[i] = drm_connector_enabled(connector, false); | |
302 | i++; | |
303 | } | |
304 | } | |
305 | ||
306 | static bool drm_target_preferred(struct drm_device *dev, | |
307 | struct drm_display_mode **modes, | |
308 | bool *enabled, int width, int height) | |
309 | { | |
310 | struct drm_connector *connector; | |
311 | int i = 0; | |
312 | ||
313 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
314 | ||
315 | if (enabled[i] == false) { | |
316 | i++; | |
317 | continue; | |
318 | } | |
319 | ||
58367ed6 | 320 | DRM_DEBUG_KMS("looking for preferred mode on connector %d\n", |
40a518d9 JB |
321 | connector->base.id); |
322 | ||
f453ba04 | 323 | modes[i] = drm_has_preferred_mode(connector, width, height); |
40a518d9 JB |
324 | /* No preferred modes, pick one off the list */ |
325 | if (!modes[i] && !list_empty(&connector->modes)) { | |
f453ba04 DA |
326 | list_for_each_entry(modes[i], &connector->modes, head) |
327 | break; | |
328 | } | |
58367ed6 | 329 | DRM_DEBUG_KMS("found mode %s\n", modes[i] ? modes[i]->name : |
40a518d9 | 330 | "none"); |
f453ba04 DA |
331 | i++; |
332 | } | |
333 | return true; | |
334 | } | |
335 | ||
336 | static int drm_pick_crtcs(struct drm_device *dev, | |
337 | struct drm_crtc **best_crtcs, | |
338 | struct drm_display_mode **modes, | |
339 | int n, int width, int height) | |
340 | { | |
341 | int c, o; | |
342 | struct drm_connector *connector; | |
343 | struct drm_connector_helper_funcs *connector_funcs; | |
344 | struct drm_encoder *encoder; | |
345 | struct drm_crtc *best_crtc; | |
346 | int my_score, best_score, score; | |
347 | struct drm_crtc **crtcs, *crtc; | |
348 | ||
349 | if (n == dev->mode_config.num_connector) | |
350 | return 0; | |
351 | c = 0; | |
352 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
353 | if (c == n) | |
354 | break; | |
355 | c++; | |
356 | } | |
357 | ||
358 | best_crtcs[n] = NULL; | |
359 | best_crtc = NULL; | |
360 | best_score = drm_pick_crtcs(dev, best_crtcs, modes, n+1, width, height); | |
361 | if (modes[n] == NULL) | |
362 | return best_score; | |
363 | ||
364 | crtcs = kmalloc(dev->mode_config.num_connector * | |
365 | sizeof(struct drm_crtc *), GFP_KERNEL); | |
366 | if (!crtcs) | |
367 | return best_score; | |
368 | ||
369 | my_score = 1; | |
370 | if (connector->status == connector_status_connected) | |
371 | my_score++; | |
372 | if (drm_has_preferred_mode(connector, width, height)) | |
373 | my_score++; | |
374 | ||
375 | connector_funcs = connector->helper_private; | |
376 | encoder = connector_funcs->best_encoder(connector); | |
377 | if (!encoder) | |
378 | goto out; | |
379 | ||
380 | connector->encoder = encoder; | |
381 | ||
382 | /* select a crtc for this connector and then attempt to configure | |
383 | remaining connectors */ | |
384 | c = 0; | |
385 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
386 | ||
a3a0544b | 387 | if ((encoder->possible_crtcs & (1 << c)) == 0) { |
f453ba04 DA |
388 | c++; |
389 | continue; | |
390 | } | |
391 | ||
392 | for (o = 0; o < n; o++) | |
393 | if (best_crtcs[o] == crtc) | |
394 | break; | |
395 | ||
396 | if (o < n) { | |
397 | /* ignore cloning for now */ | |
398 | c++; | |
399 | continue; | |
400 | } | |
401 | ||
402 | crtcs[n] = crtc; | |
403 | memcpy(crtcs, best_crtcs, n * sizeof(struct drm_crtc *)); | |
404 | score = my_score + drm_pick_crtcs(dev, crtcs, modes, n + 1, | |
405 | width, height); | |
406 | if (score > best_score) { | |
407 | best_crtc = crtc; | |
408 | best_score = score; | |
409 | memcpy(best_crtcs, crtcs, | |
410 | dev->mode_config.num_connector * | |
411 | sizeof(struct drm_crtc *)); | |
412 | } | |
413 | c++; | |
414 | } | |
415 | out: | |
416 | kfree(crtcs); | |
417 | return best_score; | |
418 | } | |
419 | ||
420 | static void drm_setup_crtcs(struct drm_device *dev) | |
421 | { | |
422 | struct drm_crtc **crtcs; | |
423 | struct drm_display_mode **modes; | |
424 | struct drm_encoder *encoder; | |
425 | struct drm_connector *connector; | |
426 | bool *enabled; | |
427 | int width, height; | |
428 | int i, ret; | |
429 | ||
58367ed6 | 430 | DRM_DEBUG_KMS("\n"); |
40a518d9 | 431 | |
f453ba04 DA |
432 | width = dev->mode_config.max_width; |
433 | height = dev->mode_config.max_height; | |
434 | ||
435 | /* clean out all the encoder/crtc combos */ | |
436 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
437 | encoder->crtc = NULL; | |
438 | } | |
439 | ||
440 | crtcs = kcalloc(dev->mode_config.num_connector, | |
441 | sizeof(struct drm_crtc *), GFP_KERNEL); | |
442 | modes = kcalloc(dev->mode_config.num_connector, | |
443 | sizeof(struct drm_display_mode *), GFP_KERNEL); | |
444 | enabled = kcalloc(dev->mode_config.num_connector, | |
445 | sizeof(bool), GFP_KERNEL); | |
446 | ||
447 | drm_enable_connectors(dev, enabled); | |
448 | ||
449 | ret = drm_target_preferred(dev, modes, enabled, width, height); | |
450 | if (!ret) | |
451 | DRM_ERROR("Unable to find initial modes\n"); | |
452 | ||
58367ed6 | 453 | DRM_DEBUG_KMS("picking CRTCs for %dx%d config\n", width, height); |
40a518d9 | 454 | |
f453ba04 DA |
455 | drm_pick_crtcs(dev, crtcs, modes, 0, width, height); |
456 | ||
457 | i = 0; | |
458 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
459 | struct drm_display_mode *mode = modes[i]; | |
460 | struct drm_crtc *crtc = crtcs[i]; | |
461 | ||
462 | if (connector->encoder == NULL) { | |
463 | i++; | |
464 | continue; | |
465 | } | |
466 | ||
467 | if (mode && crtc) { | |
58367ed6 | 468 | DRM_DEBUG_KMS("desired mode %s set on crtc %d\n", |
40a518d9 | 469 | mode->name, crtc->base.id); |
f453ba04 DA |
470 | crtc->desired_mode = mode; |
471 | connector->encoder->crtc = crtc; | |
a3a0544b | 472 | } else { |
f453ba04 | 473 | connector->encoder->crtc = NULL; |
a3a0544b DA |
474 | connector->encoder = NULL; |
475 | } | |
f453ba04 DA |
476 | i++; |
477 | } | |
478 | ||
479 | kfree(crtcs); | |
480 | kfree(modes); | |
481 | kfree(enabled); | |
482 | } | |
7bec756c JB |
483 | |
484 | /** | |
485 | * drm_encoder_crtc_ok - can a given crtc drive a given encoder? | |
486 | * @encoder: encoder to test | |
487 | * @crtc: crtc to test | |
488 | * | |
489 | * Return false if @encoder can't be driven by @crtc, true otherwise. | |
490 | */ | |
491 | static bool drm_encoder_crtc_ok(struct drm_encoder *encoder, | |
492 | struct drm_crtc *crtc) | |
493 | { | |
494 | struct drm_device *dev; | |
495 | struct drm_crtc *tmp; | |
496 | int crtc_mask = 1; | |
497 | ||
498 | WARN(!crtc, "checking null crtc?"); | |
499 | ||
500 | dev = crtc->dev; | |
501 | ||
502 | list_for_each_entry(tmp, &dev->mode_config.crtc_list, head) { | |
503 | if (tmp == crtc) | |
504 | break; | |
505 | crtc_mask <<= 1; | |
506 | } | |
507 | ||
508 | if (encoder->possible_crtcs & crtc_mask) | |
509 | return true; | |
510 | return false; | |
511 | } | |
512 | ||
513 | /* | |
514 | * Check the CRTC we're going to map each output to vs. its current | |
515 | * CRTC. If they don't match, we have to disable the output and the CRTC | |
516 | * since the driver will have to re-route things. | |
517 | */ | |
518 | static void | |
519 | drm_crtc_prepare_encoders(struct drm_device *dev) | |
520 | { | |
521 | struct drm_encoder_helper_funcs *encoder_funcs; | |
522 | struct drm_encoder *encoder; | |
523 | ||
524 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
525 | encoder_funcs = encoder->helper_private; | |
526 | /* Disable unused encoders */ | |
527 | if (encoder->crtc == NULL) | |
528 | (*encoder_funcs->dpms)(encoder, DRM_MODE_DPMS_OFF); | |
529 | /* Disable encoders whose CRTC is about to change */ | |
530 | if (encoder_funcs->get_crtc && | |
531 | encoder->crtc != (*encoder_funcs->get_crtc)(encoder)) | |
532 | (*encoder_funcs->dpms)(encoder, DRM_MODE_DPMS_OFF); | |
533 | } | |
534 | } | |
535 | ||
f453ba04 DA |
536 | /** |
537 | * drm_crtc_set_mode - set a mode | |
538 | * @crtc: CRTC to program | |
539 | * @mode: mode to use | |
540 | * @x: width of mode | |
541 | * @y: height of mode | |
542 | * | |
543 | * LOCKING: | |
544 | * Caller must hold mode config lock. | |
545 | * | |
546 | * Try to set @mode on @crtc. Give @crtc and its associated connectors a chance | |
547 | * to fixup or reject the mode prior to trying to set it. | |
548 | * | |
549 | * RETURNS: | |
550 | * True if the mode was set successfully, or false otherwise. | |
551 | */ | |
552 | bool drm_crtc_helper_set_mode(struct drm_crtc *crtc, | |
553 | struct drm_display_mode *mode, | |
3c4fdcfb KH |
554 | int x, int y, |
555 | struct drm_framebuffer *old_fb) | |
f453ba04 DA |
556 | { |
557 | struct drm_device *dev = crtc->dev; | |
558 | struct drm_display_mode *adjusted_mode, saved_mode; | |
559 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; | |
560 | struct drm_encoder_helper_funcs *encoder_funcs; | |
561 | int saved_x, saved_y; | |
562 | struct drm_encoder *encoder; | |
563 | bool ret = true; | |
564 | ||
565 | adjusted_mode = drm_mode_duplicate(dev, mode); | |
566 | ||
567 | crtc->enabled = drm_helper_crtc_in_use(crtc); | |
568 | ||
569 | if (!crtc->enabled) | |
570 | return true; | |
571 | ||
572 | saved_mode = crtc->mode; | |
573 | saved_x = crtc->x; | |
574 | saved_y = crtc->y; | |
575 | ||
576 | /* Update crtc values up front so the driver can rely on them for mode | |
577 | * setting. | |
578 | */ | |
579 | crtc->mode = *mode; | |
580 | crtc->x = x; | |
581 | crtc->y = y; | |
582 | ||
f453ba04 DA |
583 | /* Pass our mode to the connectors and the CRTC to give them a chance to |
584 | * adjust it according to limitations or connector properties, and also | |
585 | * a chance to reject the mode entirely. | |
586 | */ | |
587 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
588 | ||
589 | if (encoder->crtc != crtc) | |
590 | continue; | |
591 | encoder_funcs = encoder->helper_private; | |
592 | if (!(ret = encoder_funcs->mode_fixup(encoder, mode, | |
593 | adjusted_mode))) { | |
594 | goto done; | |
595 | } | |
596 | } | |
597 | ||
598 | if (!(ret = crtc_funcs->mode_fixup(crtc, mode, adjusted_mode))) { | |
599 | goto done; | |
600 | } | |
601 | ||
602 | /* Prepare the encoders and CRTCs before setting the mode. */ | |
603 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
604 | ||
605 | if (encoder->crtc != crtc) | |
606 | continue; | |
607 | encoder_funcs = encoder->helper_private; | |
608 | /* Disable the encoders as the first thing we do. */ | |
609 | encoder_funcs->prepare(encoder); | |
610 | } | |
611 | ||
7bec756c JB |
612 | drm_crtc_prepare_encoders(dev); |
613 | ||
f453ba04 DA |
614 | crtc_funcs->prepare(crtc); |
615 | ||
616 | /* Set up the DPLL and any encoders state that needs to adjust or depend | |
617 | * on the DPLL. | |
618 | */ | |
5c3b82e2 CW |
619 | ret = !crtc_funcs->mode_set(crtc, mode, adjusted_mode, x, y, old_fb); |
620 | if (!ret) | |
621 | goto done; | |
f453ba04 DA |
622 | |
623 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
624 | ||
625 | if (encoder->crtc != crtc) | |
626 | continue; | |
627 | ||
628 | DRM_INFO("%s: set mode %s %x\n", drm_get_encoder_name(encoder), | |
629 | mode->name, mode->base.id); | |
630 | encoder_funcs = encoder->helper_private; | |
631 | encoder_funcs->mode_set(encoder, mode, adjusted_mode); | |
632 | } | |
633 | ||
634 | /* Now enable the clocks, plane, pipe, and connectors that we set up. */ | |
635 | crtc_funcs->commit(crtc); | |
636 | ||
637 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
638 | ||
639 | if (encoder->crtc != crtc) | |
640 | continue; | |
641 | ||
642 | encoder_funcs = encoder->helper_private; | |
643 | encoder_funcs->commit(encoder); | |
644 | ||
645 | } | |
646 | ||
647 | /* XXX free adjustedmode */ | |
648 | drm_mode_destroy(dev, adjusted_mode); | |
649 | /* FIXME: add subpixel order */ | |
650 | done: | |
651 | if (!ret) { | |
652 | crtc->mode = saved_mode; | |
653 | crtc->x = saved_x; | |
654 | crtc->y = saved_y; | |
655 | } | |
656 | ||
657 | return ret; | |
658 | } | |
659 | EXPORT_SYMBOL(drm_crtc_helper_set_mode); | |
660 | ||
661 | ||
662 | /** | |
663 | * drm_crtc_helper_set_config - set a new config from userspace | |
664 | * @crtc: CRTC to setup | |
665 | * @crtc_info: user provided configuration | |
666 | * @new_mode: new mode to set | |
667 | * @connector_set: set of connectors for the new config | |
668 | * @fb: new framebuffer | |
669 | * | |
670 | * LOCKING: | |
671 | * Caller must hold mode config lock. | |
672 | * | |
673 | * Setup a new configuration, provided by the user in @crtc_info, and enable | |
674 | * it. | |
675 | * | |
676 | * RETURNS: | |
677 | * Zero. (FIXME) | |
678 | */ | |
679 | int drm_crtc_helper_set_config(struct drm_mode_set *set) | |
680 | { | |
681 | struct drm_device *dev; | |
e67aae79 MM |
682 | struct drm_crtc *save_crtcs, *new_crtc, *crtc; |
683 | struct drm_encoder *save_encoders, *new_encoder, *encoder; | |
7bec756c | 684 | struct drm_framebuffer *old_fb = NULL; |
4cb72b17 JB |
685 | bool mode_changed = false; /* if true do a full mode set */ |
686 | bool fb_changed = false; /* if true and !mode_changed just do a flip */ | |
e67aae79 | 687 | struct drm_connector *save_connectors, *connector; |
f453ba04 DA |
688 | int count = 0, ro, fail = 0; |
689 | struct drm_crtc_helper_funcs *crtc_funcs; | |
690 | int ret = 0; | |
691 | ||
58367ed6 | 692 | DRM_DEBUG_KMS("\n"); |
f453ba04 DA |
693 | |
694 | if (!set) | |
695 | return -EINVAL; | |
696 | ||
697 | if (!set->crtc) | |
698 | return -EINVAL; | |
699 | ||
700 | if (!set->crtc->helper_private) | |
701 | return -EINVAL; | |
702 | ||
703 | crtc_funcs = set->crtc->helper_private; | |
704 | ||
58367ed6 ZY |
705 | DRM_DEBUG_KMS("crtc: %p %d fb: %p connectors: %p num_connectors:" |
706 | " %d (x, y) (%i, %i)\n", | |
f453ba04 DA |
707 | set->crtc, set->crtc->base.id, set->fb, set->connectors, |
708 | (int)set->num_connectors, set->x, set->y); | |
709 | ||
710 | dev = set->crtc->dev; | |
711 | ||
e67aae79 MM |
712 | /* Allocate space for the backup of all (non-pointer) crtc, encoder and |
713 | * connector data. */ | |
714 | save_crtcs = kzalloc(dev->mode_config.num_crtc * | |
715 | sizeof(struct drm_crtc), GFP_KERNEL); | |
f453ba04 DA |
716 | if (!save_crtcs) |
717 | return -ENOMEM; | |
718 | ||
e67aae79 MM |
719 | save_encoders = kzalloc(dev->mode_config.num_encoder * |
720 | sizeof(struct drm_encoder), GFP_KERNEL); | |
f453ba04 DA |
721 | if (!save_encoders) { |
722 | kfree(save_crtcs); | |
723 | return -ENOMEM; | |
724 | } | |
725 | ||
e67aae79 MM |
726 | save_connectors = kzalloc(dev->mode_config.num_connector * |
727 | sizeof(struct drm_connector), GFP_KERNEL); | |
728 | if (!save_connectors) { | |
729 | kfree(save_crtcs); | |
730 | kfree(save_encoders); | |
731 | return -ENOMEM; | |
732 | } | |
733 | ||
734 | /* Copy data. Note that driver private data is not affected. | |
735 | * Should anything bad happen only the expected state is | |
736 | * restored, not the drivers personal bookkeeping. | |
737 | */ | |
738 | count = 0; | |
739 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
740 | save_crtcs[count++] = *crtc; | |
741 | } | |
742 | ||
743 | count = 0; | |
744 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
745 | save_encoders[count++] = *encoder; | |
746 | } | |
747 | ||
748 | count = 0; | |
749 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
750 | save_connectors[count++] = *connector; | |
751 | } | |
752 | ||
f453ba04 DA |
753 | /* We should be able to check here if the fb has the same properties |
754 | * and then just flip_or_move it */ | |
755 | if (set->crtc->fb != set->fb) { | |
712531bf | 756 | /* If we have no fb then treat it as a full mode set */ |
7bec756c | 757 | if (set->crtc->fb == NULL) { |
58367ed6 | 758 | DRM_DEBUG_KMS("crtc has no fb, full mode set\n"); |
712531bf | 759 | mode_changed = true; |
4cb72b17 JB |
760 | } else if (set->fb == NULL) { |
761 | mode_changed = true; | |
7bec756c | 762 | } else if ((set->fb->bits_per_pixel != |
712531bf JB |
763 | set->crtc->fb->bits_per_pixel) || |
764 | set->fb->depth != set->crtc->fb->depth) | |
765 | fb_changed = true; | |
f453ba04 | 766 | else |
712531bf | 767 | fb_changed = true; |
f453ba04 DA |
768 | } |
769 | ||
770 | if (set->x != set->crtc->x || set->y != set->crtc->y) | |
712531bf | 771 | fb_changed = true; |
f453ba04 DA |
772 | |
773 | if (set->mode && !drm_mode_equal(set->mode, &set->crtc->mode)) { | |
58367ed6 | 774 | DRM_DEBUG_KMS("modes are different, full mode set\n"); |
f453ba04 DA |
775 | drm_mode_debug_printmodeline(&set->crtc->mode); |
776 | drm_mode_debug_printmodeline(set->mode); | |
712531bf | 777 | mode_changed = true; |
f453ba04 DA |
778 | } |
779 | ||
780 | /* a) traverse passed in connector list and get encoders for them */ | |
781 | count = 0; | |
782 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
783 | struct drm_connector_helper_funcs *connector_funcs = | |
784 | connector->helper_private; | |
f453ba04 DA |
785 | new_encoder = connector->encoder; |
786 | for (ro = 0; ro < set->num_connectors; ro++) { | |
787 | if (set->connectors[ro] == connector) { | |
788 | new_encoder = connector_funcs->best_encoder(connector); | |
789 | /* if we can't get an encoder for a connector | |
790 | we are setting now - then fail */ | |
791 | if (new_encoder == NULL) | |
792 | /* don't break so fail path works correct */ | |
793 | fail = 1; | |
794 | break; | |
795 | } | |
796 | } | |
797 | ||
798 | if (new_encoder != connector->encoder) { | |
58367ed6 | 799 | DRM_DEBUG_KMS("encoder changed, full mode switch\n"); |
712531bf | 800 | mode_changed = true; |
ff846ab7 MM |
801 | /* If the encoder is reused for another connector, then |
802 | * the appropriate crtc will be set later. | |
803 | */ | |
ff6fdbed MM |
804 | if (connector->encoder) |
805 | connector->encoder->crtc = NULL; | |
f453ba04 DA |
806 | connector->encoder = new_encoder; |
807 | } | |
808 | } | |
809 | ||
810 | if (fail) { | |
811 | ret = -EINVAL; | |
e67aae79 | 812 | goto fail; |
f453ba04 DA |
813 | } |
814 | ||
815 | count = 0; | |
816 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
817 | if (!connector->encoder) | |
818 | continue; | |
819 | ||
f453ba04 DA |
820 | if (connector->encoder->crtc == set->crtc) |
821 | new_crtc = NULL; | |
822 | else | |
823 | new_crtc = connector->encoder->crtc; | |
824 | ||
825 | for (ro = 0; ro < set->num_connectors; ro++) { | |
826 | if (set->connectors[ro] == connector) | |
827 | new_crtc = set->crtc; | |
828 | } | |
7bec756c JB |
829 | |
830 | /* Make sure the new CRTC will work with the encoder */ | |
831 | if (new_crtc && | |
832 | !drm_encoder_crtc_ok(connector->encoder, new_crtc)) { | |
833 | ret = -EINVAL; | |
e67aae79 | 834 | goto fail; |
7bec756c | 835 | } |
f453ba04 | 836 | if (new_crtc != connector->encoder->crtc) { |
58367ed6 | 837 | DRM_DEBUG_KMS("crtc changed, full mode switch\n"); |
712531bf | 838 | mode_changed = true; |
f453ba04 DA |
839 | connector->encoder->crtc = new_crtc; |
840 | } | |
58367ed6 | 841 | DRM_DEBUG_KMS("setting connector %d crtc to %p\n", |
7bec756c | 842 | connector->base.id, new_crtc); |
f453ba04 DA |
843 | } |
844 | ||
845 | /* mode_set_base is not a required function */ | |
712531bf JB |
846 | if (fb_changed && !crtc_funcs->mode_set_base) |
847 | mode_changed = true; | |
f453ba04 | 848 | |
712531bf | 849 | if (mode_changed) { |
3c4fdcfb | 850 | old_fb = set->crtc->fb; |
f453ba04 DA |
851 | set->crtc->fb = set->fb; |
852 | set->crtc->enabled = (set->mode != NULL); | |
853 | if (set->mode != NULL) { | |
58367ed6 ZY |
854 | DRM_DEBUG_KMS("attempting to set mode from" |
855 | " userspace\n"); | |
f453ba04 DA |
856 | drm_mode_debug_printmodeline(set->mode); |
857 | if (!drm_crtc_helper_set_mode(set->crtc, set->mode, | |
3c4fdcfb KH |
858 | set->x, set->y, |
859 | old_fb)) { | |
5c3b82e2 CW |
860 | DRM_ERROR("failed to set mode on crtc %p\n", |
861 | set->crtc); | |
f453ba04 | 862 | ret = -EINVAL; |
e67aae79 | 863 | goto fail; |
f453ba04 DA |
864 | } |
865 | /* TODO are these needed? */ | |
866 | set->crtc->desired_x = set->x; | |
867 | set->crtc->desired_y = set->y; | |
868 | set->crtc->desired_mode = set->mode; | |
869 | } | |
870 | drm_helper_disable_unused_functions(dev); | |
712531bf | 871 | } else if (fb_changed) { |
3c4fdcfb | 872 | old_fb = set->crtc->fb; |
f453ba04 DA |
873 | if (set->crtc->fb != set->fb) |
874 | set->crtc->fb = set->fb; | |
5c3b82e2 CW |
875 | ret = crtc_funcs->mode_set_base(set->crtc, |
876 | set->x, set->y, old_fb); | |
877 | if (ret != 0) | |
e67aae79 | 878 | goto fail; |
f453ba04 DA |
879 | } |
880 | ||
e67aae79 | 881 | kfree(save_connectors); |
f453ba04 DA |
882 | kfree(save_encoders); |
883 | kfree(save_crtcs); | |
884 | return 0; | |
885 | ||
e67aae79 MM |
886 | fail: |
887 | /* Restore all previous data. */ | |
f453ba04 | 888 | count = 0; |
e67aae79 MM |
889 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
890 | *crtc = save_crtcs[count++]; | |
891 | } | |
e62fb64e | 892 | |
e67aae79 MM |
893 | count = 0; |
894 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
895 | *encoder = save_encoders[count++]; | |
e62fb64e | 896 | } |
e67aae79 | 897 | |
f453ba04 DA |
898 | count = 0; |
899 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
e67aae79 | 900 | *connector = save_connectors[count++]; |
f453ba04 | 901 | } |
e67aae79 MM |
902 | |
903 | kfree(save_connectors); | |
f453ba04 | 904 | kfree(save_encoders); |
e67aae79 | 905 | kfree(save_crtcs); |
f453ba04 DA |
906 | return ret; |
907 | } | |
908 | EXPORT_SYMBOL(drm_crtc_helper_set_config); | |
909 | ||
910 | bool drm_helper_plugged_event(struct drm_device *dev) | |
911 | { | |
58367ed6 | 912 | DRM_DEBUG_KMS("\n"); |
f453ba04 DA |
913 | |
914 | drm_helper_probe_connector_modes(dev, dev->mode_config.max_width, | |
915 | dev->mode_config.max_height); | |
916 | ||
917 | drm_setup_crtcs(dev); | |
918 | ||
919 | /* alert the driver fb layer */ | |
920 | dev->mode_config.funcs->fb_changed(dev); | |
921 | ||
922 | /* FIXME: send hotplug event */ | |
923 | return true; | |
924 | } | |
925 | /** | |
926 | * drm_initial_config - setup a sane initial connector configuration | |
927 | * @dev: DRM device | |
f453ba04 DA |
928 | * |
929 | * LOCKING: | |
930 | * Called at init time, must take mode config lock. | |
931 | * | |
932 | * Scan the CRTCs and connectors and try to put together an initial setup. | |
933 | * At the moment, this is a cloned configuration across all heads with | |
934 | * a new framebuffer object as the backing store. | |
935 | * | |
936 | * RETURNS: | |
937 | * Zero if everything went ok, nonzero otherwise. | |
938 | */ | |
7a1fb5d0 | 939 | bool drm_helper_initial_config(struct drm_device *dev) |
f453ba04 | 940 | { |
40a518d9 | 941 | int count = 0; |
f453ba04 | 942 | |
40a518d9 JB |
943 | count = drm_helper_probe_connector_modes(dev, |
944 | dev->mode_config.max_width, | |
945 | dev->mode_config.max_height); | |
946 | ||
947 | /* | |
575dc34e | 948 | * we shouldn't end up with no modes here. |
40a518d9 | 949 | */ |
575dc34e | 950 | WARN(!count, "Connected connector with 0 modes\n"); |
40a518d9 JB |
951 | |
952 | drm_setup_crtcs(dev); | |
953 | ||
954 | /* alert the driver fb layer */ | |
955 | dev->mode_config.funcs->fb_changed(dev); | |
956 | ||
957 | return 0; | |
f453ba04 DA |
958 | } |
959 | EXPORT_SYMBOL(drm_helper_initial_config); | |
960 | ||
c9fb15f6 KP |
961 | static int drm_helper_choose_encoder_dpms(struct drm_encoder *encoder) |
962 | { | |
963 | int dpms = DRM_MODE_DPMS_OFF; | |
964 | struct drm_connector *connector; | |
965 | struct drm_device *dev = encoder->dev; | |
966 | ||
967 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) | |
968 | if (connector->encoder == encoder) | |
969 | if (connector->dpms < dpms) | |
970 | dpms = connector->dpms; | |
971 | return dpms; | |
972 | } | |
973 | ||
974 | static int drm_helper_choose_crtc_dpms(struct drm_crtc *crtc) | |
975 | { | |
976 | int dpms = DRM_MODE_DPMS_OFF; | |
977 | struct drm_connector *connector; | |
978 | struct drm_device *dev = crtc->dev; | |
979 | ||
980 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) | |
981 | if (connector->encoder && connector->encoder->crtc == crtc) | |
982 | if (connector->dpms < dpms) | |
983 | dpms = connector->dpms; | |
984 | return dpms; | |
985 | } | |
986 | ||
987 | /** | |
988 | * drm_helper_connector_dpms | |
989 | * @connector affected connector | |
990 | * @mode DPMS mode | |
991 | * | |
992 | * Calls the low-level connector DPMS function, then | |
993 | * calls appropriate encoder and crtc DPMS functions as well | |
994 | */ | |
995 | void drm_helper_connector_dpms(struct drm_connector *connector, int mode) | |
996 | { | |
997 | struct drm_encoder *encoder = connector->encoder; | |
998 | struct drm_crtc *crtc = encoder ? encoder->crtc : NULL; | |
999 | int old_dpms; | |
1000 | ||
1001 | if (mode == connector->dpms) | |
1002 | return; | |
1003 | ||
1004 | old_dpms = connector->dpms; | |
1005 | connector->dpms = mode; | |
1006 | ||
1007 | /* from off to on, do crtc then encoder */ | |
1008 | if (mode < old_dpms) { | |
1009 | if (crtc) { | |
1010 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; | |
1011 | if (crtc_funcs->dpms) | |
1012 | (*crtc_funcs->dpms) (crtc, | |
1013 | drm_helper_choose_crtc_dpms(crtc)); | |
1014 | } | |
1015 | if (encoder) { | |
1016 | struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; | |
1017 | if (encoder_funcs->dpms) | |
1018 | (*encoder_funcs->dpms) (encoder, | |
1019 | drm_helper_choose_encoder_dpms(encoder)); | |
1020 | } | |
1021 | } | |
1022 | ||
1023 | /* from on to off, do encoder then crtc */ | |
1024 | if (mode > old_dpms) { | |
1025 | if (encoder) { | |
1026 | struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; | |
1027 | if (encoder_funcs->dpms) | |
1028 | (*encoder_funcs->dpms) (encoder, | |
1029 | drm_helper_choose_encoder_dpms(encoder)); | |
1030 | } | |
1031 | if (crtc) { | |
1032 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; | |
1033 | if (crtc_funcs->dpms) | |
1034 | (*crtc_funcs->dpms) (crtc, | |
1035 | drm_helper_choose_crtc_dpms(crtc)); | |
1036 | } | |
1037 | } | |
1038 | ||
1039 | return; | |
1040 | } | |
1041 | EXPORT_SYMBOL(drm_helper_connector_dpms); | |
1042 | ||
f453ba04 DA |
1043 | /** |
1044 | * drm_hotplug_stage_two | |
1045 | * @dev DRM device | |
1046 | * @connector hotpluged connector | |
1047 | * | |
1048 | * LOCKING. | |
1049 | * Caller must hold mode config lock, function might grab struct lock. | |
1050 | * | |
1051 | * Stage two of a hotplug. | |
1052 | * | |
1053 | * RETURNS: | |
1054 | * Zero on success, errno on failure. | |
1055 | */ | |
1056 | int drm_helper_hotplug_stage_two(struct drm_device *dev) | |
1057 | { | |
f453ba04 DA |
1058 | drm_helper_plugged_event(dev); |
1059 | ||
1060 | return 0; | |
1061 | } | |
1062 | EXPORT_SYMBOL(drm_helper_hotplug_stage_two); | |
1063 | ||
1064 | int drm_helper_mode_fill_fb_struct(struct drm_framebuffer *fb, | |
1065 | struct drm_mode_fb_cmd *mode_cmd) | |
1066 | { | |
1067 | fb->width = mode_cmd->width; | |
1068 | fb->height = mode_cmd->height; | |
1069 | fb->pitch = mode_cmd->pitch; | |
1070 | fb->bits_per_pixel = mode_cmd->bpp; | |
1071 | fb->depth = mode_cmd->depth; | |
1072 | ||
1073 | return 0; | |
1074 | } | |
1075 | EXPORT_SYMBOL(drm_helper_mode_fill_fb_struct); | |
1076 | ||
1077 | int drm_helper_resume_force_mode(struct drm_device *dev) | |
1078 | { | |
1079 | struct drm_crtc *crtc; | |
1080 | int ret; | |
1081 | ||
1082 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
1083 | ||
1084 | if (!crtc->enabled) | |
1085 | continue; | |
1086 | ||
3c4fdcfb KH |
1087 | ret = drm_crtc_helper_set_mode(crtc, &crtc->mode, |
1088 | crtc->x, crtc->y, crtc->fb); | |
f453ba04 DA |
1089 | |
1090 | if (ret == false) | |
1091 | DRM_ERROR("failed to set mode on crtc %p\n", crtc); | |
1092 | } | |
af4fcb57 ZY |
1093 | /* disable the unused connectors while restoring the modesetting */ |
1094 | drm_helper_disable_unused_functions(dev); | |
f453ba04 DA |
1095 | return 0; |
1096 | } | |
1097 | EXPORT_SYMBOL(drm_helper_resume_force_mode); |