Commit | Line | Data |
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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 | ||
2d1a8a48 | 32 | #include <linux/export.h> |
0603ba14 | 33 | #include <linux/moduleparam.h> |
2d1a8a48 | 34 | |
f453ba04 DA |
35 | #include "drmP.h" |
36 | #include "drm_crtc.h" | |
37 | #include "drm_crtc_helper.h" | |
d50ba256 | 38 | #include "drm_fb_helper.h" |
f453ba04 | 39 | |
e58f637b CW |
40 | static bool drm_kms_helper_poll = true; |
41 | module_param_named(poll, drm_kms_helper_poll, bool, 0600); | |
42 | ||
6714977b | 43 | static void drm_mode_validate_flag(struct drm_connector *connector, |
44 | int flags) | |
45 | { | |
46 | struct drm_display_mode *mode, *t; | |
47 | ||
48 | if (flags == (DRM_MODE_FLAG_DBLSCAN | DRM_MODE_FLAG_INTERLACE)) | |
49 | return; | |
50 | ||
51 | list_for_each_entry_safe(mode, t, &connector->modes, head) { | |
52 | if ((mode->flags & DRM_MODE_FLAG_INTERLACE) && | |
53 | !(flags & DRM_MODE_FLAG_INTERLACE)) | |
54 | mode->status = MODE_NO_INTERLACE; | |
55 | if ((mode->flags & DRM_MODE_FLAG_DBLSCAN) && | |
56 | !(flags & DRM_MODE_FLAG_DBLSCAN)) | |
57 | mode->status = MODE_NO_DBLESCAN; | |
58 | } | |
59 | ||
60 | return; | |
61 | } | |
62 | ||
f453ba04 | 63 | /** |
38651674 | 64 | * drm_helper_probe_single_connector_modes - get complete set of display modes |
f453ba04 DA |
65 | * @dev: DRM device |
66 | * @maxX: max width for modes | |
67 | * @maxY: max height for modes | |
68 | * | |
69 | * LOCKING: | |
70 | * Caller must hold mode config lock. | |
71 | * | |
72 | * Based on @dev's mode_config layout, scan all the connectors and try to detect | |
73 | * modes on them. Modes will first be added to the connector's probed_modes | |
74 | * list, then culled (based on validity and the @maxX, @maxY parameters) and | |
75 | * put into the normal modes list. | |
76 | * | |
77 | * Intended to be used either at bootup time or when major configuration | |
78 | * changes have occurred. | |
79 | * | |
80 | * FIXME: take into account monitor limits | |
40a518d9 JB |
81 | * |
82 | * RETURNS: | |
83 | * Number of modes found on @connector. | |
f453ba04 | 84 | */ |
40a518d9 JB |
85 | int drm_helper_probe_single_connector_modes(struct drm_connector *connector, |
86 | uint32_t maxX, uint32_t maxY) | |
f453ba04 DA |
87 | { |
88 | struct drm_device *dev = connector->dev; | |
89 | struct drm_display_mode *mode, *t; | |
90 | struct drm_connector_helper_funcs *connector_funcs = | |
91 | connector->helper_private; | |
40a518d9 | 92 | int count = 0; |
6714977b | 93 | int mode_flags = 0; |
f453ba04 | 94 | |
9440106b JG |
95 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", connector->base.id, |
96 | drm_get_connector_name(connector)); | |
f453ba04 DA |
97 | /* set all modes to the unverified state */ |
98 | list_for_each_entry_safe(mode, t, &connector->modes, head) | |
99 | mode->status = MODE_UNVERIFIED; | |
100 | ||
d50ba256 DA |
101 | if (connector->force) { |
102 | if (connector->force == DRM_FORCE_ON) | |
103 | connector->status = connector_status_connected; | |
104 | else | |
105 | connector->status = connector_status_disconnected; | |
106 | if (connector->funcs->force) | |
107 | connector->funcs->force(connector); | |
e58f637b | 108 | } else { |
930a9e28 | 109 | connector->status = connector->funcs->detect(connector, true); |
551402a3 | 110 | drm_kms_helper_poll_enable(dev); |
e58f637b | 111 | } |
f453ba04 DA |
112 | |
113 | if (connector->status == connector_status_disconnected) { | |
9440106b JG |
114 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] disconnected\n", |
115 | connector->base.id, drm_get_connector_name(connector)); | |
72539832 | 116 | drm_mode_connector_update_edid_property(connector, NULL); |
620f3781 | 117 | goto prune; |
f453ba04 DA |
118 | } |
119 | ||
40a518d9 | 120 | count = (*connector_funcs->get_modes)(connector); |
c7ef35a9 | 121 | if (count == 0 && connector->status == connector_status_connected) |
9632b41f | 122 | count = drm_add_modes_noedid(connector, 1024, 768); |
c7ef35a9 CW |
123 | if (count == 0) |
124 | goto prune; | |
f453ba04 | 125 | |
40a518d9 | 126 | drm_mode_connector_list_update(connector); |
f453ba04 DA |
127 | |
128 | if (maxX && maxY) | |
129 | drm_mode_validate_size(dev, &connector->modes, maxX, | |
130 | maxY, 0); | |
6714977b | 131 | |
132 | if (connector->interlace_allowed) | |
133 | mode_flags |= DRM_MODE_FLAG_INTERLACE; | |
134 | if (connector->doublescan_allowed) | |
135 | mode_flags |= DRM_MODE_FLAG_DBLSCAN; | |
136 | drm_mode_validate_flag(connector, mode_flags); | |
137 | ||
f453ba04 DA |
138 | list_for_each_entry_safe(mode, t, &connector->modes, head) { |
139 | if (mode->status == MODE_OK) | |
140 | mode->status = connector_funcs->mode_valid(connector, | |
141 | mode); | |
142 | } | |
143 | ||
620f3781 | 144 | prune: |
f453ba04 DA |
145 | drm_mode_prune_invalid(dev, &connector->modes, true); |
146 | ||
40a518d9 JB |
147 | if (list_empty(&connector->modes)) |
148 | return 0; | |
f453ba04 DA |
149 | |
150 | drm_mode_sort(&connector->modes); | |
151 | ||
9440106b JG |
152 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] probed modes :\n", connector->base.id, |
153 | drm_get_connector_name(connector)); | |
f453ba04 DA |
154 | list_for_each_entry_safe(mode, t, &connector->modes, head) { |
155 | mode->vrefresh = drm_mode_vrefresh(mode); | |
156 | ||
157 | drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V); | |
158 | drm_mode_debug_printmodeline(mode); | |
159 | } | |
40a518d9 JB |
160 | |
161 | return count; | |
f453ba04 DA |
162 | } |
163 | EXPORT_SYMBOL(drm_helper_probe_single_connector_modes); | |
164 | ||
c9fb15f6 KP |
165 | /** |
166 | * drm_helper_encoder_in_use - check if a given encoder is in use | |
167 | * @encoder: encoder to check | |
168 | * | |
169 | * LOCKING: | |
170 | * Caller must hold mode config lock. | |
171 | * | |
172 | * Walk @encoders's DRM device's mode_config and see if it's in use. | |
173 | * | |
174 | * RETURNS: | |
175 | * True if @encoder is part of the mode_config, false otherwise. | |
176 | */ | |
177 | bool drm_helper_encoder_in_use(struct drm_encoder *encoder) | |
178 | { | |
179 | struct drm_connector *connector; | |
180 | struct drm_device *dev = encoder->dev; | |
181 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) | |
182 | if (connector->encoder == encoder) | |
183 | return true; | |
184 | return false; | |
185 | } | |
186 | EXPORT_SYMBOL(drm_helper_encoder_in_use); | |
187 | ||
f453ba04 DA |
188 | /** |
189 | * drm_helper_crtc_in_use - check if a given CRTC is in a mode_config | |
190 | * @crtc: CRTC to check | |
191 | * | |
192 | * LOCKING: | |
193 | * Caller must hold mode config lock. | |
194 | * | |
195 | * Walk @crtc's DRM device's mode_config and see if it's in use. | |
196 | * | |
197 | * RETURNS: | |
198 | * True if @crtc is part of the mode_config, false otherwise. | |
199 | */ | |
200 | bool drm_helper_crtc_in_use(struct drm_crtc *crtc) | |
201 | { | |
202 | struct drm_encoder *encoder; | |
203 | struct drm_device *dev = crtc->dev; | |
204 | /* FIXME: Locking around list access? */ | |
205 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) | |
c9fb15f6 | 206 | if (encoder->crtc == crtc && drm_helper_encoder_in_use(encoder)) |
f453ba04 DA |
207 | return true; |
208 | return false; | |
209 | } | |
210 | EXPORT_SYMBOL(drm_helper_crtc_in_use); | |
211 | ||
86a1b9d1 BS |
212 | static void |
213 | drm_encoder_disable(struct drm_encoder *encoder) | |
214 | { | |
215 | struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; | |
216 | ||
217 | if (encoder_funcs->disable) | |
218 | (*encoder_funcs->disable)(encoder); | |
219 | else | |
220 | (*encoder_funcs->dpms)(encoder, DRM_MODE_DPMS_OFF); | |
221 | } | |
222 | ||
f453ba04 | 223 | /** |
89347bb8 | 224 | * drm_helper_disable_unused_functions - disable unused objects |
f453ba04 DA |
225 | * @dev: DRM device |
226 | * | |
227 | * LOCKING: | |
228 | * Caller must hold mode config lock. | |
229 | * | |
230 | * If an connector or CRTC isn't part of @dev's mode_config, it can be disabled | |
231 | * by calling its dpms function, which should power it off. | |
232 | */ | |
233 | void drm_helper_disable_unused_functions(struct drm_device *dev) | |
234 | { | |
235 | struct drm_encoder *encoder; | |
a3a0544b | 236 | struct drm_connector *connector; |
f453ba04 DA |
237 | struct drm_crtc *crtc; |
238 | ||
a3a0544b DA |
239 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
240 | if (!connector->encoder) | |
241 | continue; | |
242 | if (connector->status == connector_status_disconnected) | |
243 | connector->encoder = NULL; | |
244 | } | |
245 | ||
f453ba04 | 246 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
92971021 | 247 | if (!drm_helper_encoder_in_use(encoder)) { |
86a1b9d1 | 248 | drm_encoder_disable(encoder); |
9c552dd7 DA |
249 | /* disconnector encoder from any connector */ |
250 | encoder->crtc = NULL; | |
a3a0544b | 251 | } |
f453ba04 DA |
252 | } |
253 | ||
254 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
255 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; | |
256 | crtc->enabled = drm_helper_crtc_in_use(crtc); | |
257 | if (!crtc->enabled) { | |
5c8d7171 AD |
258 | if (crtc_funcs->disable) |
259 | (*crtc_funcs->disable)(crtc); | |
260 | else | |
261 | (*crtc_funcs->dpms)(crtc, DRM_MODE_DPMS_OFF); | |
f453ba04 DA |
262 | crtc->fb = NULL; |
263 | } | |
264 | } | |
265 | } | |
266 | EXPORT_SYMBOL(drm_helper_disable_unused_functions); | |
267 | ||
7bec756c JB |
268 | /** |
269 | * drm_encoder_crtc_ok - can a given crtc drive a given encoder? | |
270 | * @encoder: encoder to test | |
271 | * @crtc: crtc to test | |
272 | * | |
273 | * Return false if @encoder can't be driven by @crtc, true otherwise. | |
274 | */ | |
275 | static bool drm_encoder_crtc_ok(struct drm_encoder *encoder, | |
276 | struct drm_crtc *crtc) | |
277 | { | |
278 | struct drm_device *dev; | |
279 | struct drm_crtc *tmp; | |
280 | int crtc_mask = 1; | |
281 | ||
fce7d61b | 282 | WARN(!crtc, "checking null crtc?\n"); |
7bec756c JB |
283 | |
284 | dev = crtc->dev; | |
285 | ||
286 | list_for_each_entry(tmp, &dev->mode_config.crtc_list, head) { | |
287 | if (tmp == crtc) | |
288 | break; | |
289 | crtc_mask <<= 1; | |
290 | } | |
291 | ||
292 | if (encoder->possible_crtcs & crtc_mask) | |
293 | return true; | |
294 | return false; | |
295 | } | |
296 | ||
297 | /* | |
298 | * Check the CRTC we're going to map each output to vs. its current | |
299 | * CRTC. If they don't match, we have to disable the output and the CRTC | |
300 | * since the driver will have to re-route things. | |
301 | */ | |
302 | static void | |
303 | drm_crtc_prepare_encoders(struct drm_device *dev) | |
304 | { | |
305 | struct drm_encoder_helper_funcs *encoder_funcs; | |
306 | struct drm_encoder *encoder; | |
307 | ||
308 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
309 | encoder_funcs = encoder->helper_private; | |
310 | /* Disable unused encoders */ | |
311 | if (encoder->crtc == NULL) | |
86a1b9d1 | 312 | drm_encoder_disable(encoder); |
7bec756c JB |
313 | /* Disable encoders whose CRTC is about to change */ |
314 | if (encoder_funcs->get_crtc && | |
315 | encoder->crtc != (*encoder_funcs->get_crtc)(encoder)) | |
86a1b9d1 | 316 | drm_encoder_disable(encoder); |
7bec756c JB |
317 | } |
318 | } | |
319 | ||
f453ba04 DA |
320 | /** |
321 | * drm_crtc_set_mode - set a mode | |
322 | * @crtc: CRTC to program | |
323 | * @mode: mode to use | |
324 | * @x: width of mode | |
325 | * @y: height of mode | |
326 | * | |
327 | * LOCKING: | |
328 | * Caller must hold mode config lock. | |
329 | * | |
330 | * Try to set @mode on @crtc. Give @crtc and its associated connectors a chance | |
331 | * to fixup or reject the mode prior to trying to set it. | |
332 | * | |
333 | * RETURNS: | |
334 | * True if the mode was set successfully, or false otherwise. | |
335 | */ | |
336 | bool drm_crtc_helper_set_mode(struct drm_crtc *crtc, | |
337 | struct drm_display_mode *mode, | |
3c4fdcfb KH |
338 | int x, int y, |
339 | struct drm_framebuffer *old_fb) | |
f453ba04 DA |
340 | { |
341 | struct drm_device *dev = crtc->dev; | |
27641c3f | 342 | struct drm_display_mode *adjusted_mode, saved_mode, saved_hwmode; |
f453ba04 DA |
343 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
344 | struct drm_encoder_helper_funcs *encoder_funcs; | |
345 | int saved_x, saved_y; | |
346 | struct drm_encoder *encoder; | |
347 | bool ret = true; | |
348 | ||
f453ba04 | 349 | crtc->enabled = drm_helper_crtc_in_use(crtc); |
f453ba04 DA |
350 | if (!crtc->enabled) |
351 | return true; | |
352 | ||
021a8455 CW |
353 | adjusted_mode = drm_mode_duplicate(dev, mode); |
354 | ||
27641c3f | 355 | saved_hwmode = crtc->hwmode; |
f453ba04 DA |
356 | saved_mode = crtc->mode; |
357 | saved_x = crtc->x; | |
358 | saved_y = crtc->y; | |
359 | ||
360 | /* Update crtc values up front so the driver can rely on them for mode | |
361 | * setting. | |
362 | */ | |
363 | crtc->mode = *mode; | |
364 | crtc->x = x; | |
365 | crtc->y = y; | |
366 | ||
f453ba04 DA |
367 | /* Pass our mode to the connectors and the CRTC to give them a chance to |
368 | * adjust it according to limitations or connector properties, and also | |
369 | * a chance to reject the mode entirely. | |
370 | */ | |
371 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
372 | ||
373 | if (encoder->crtc != crtc) | |
374 | continue; | |
375 | encoder_funcs = encoder->helper_private; | |
376 | if (!(ret = encoder_funcs->mode_fixup(encoder, mode, | |
377 | adjusted_mode))) { | |
836e53d7 | 378 | DRM_DEBUG_KMS("Encoder fixup failed\n"); |
f453ba04 DA |
379 | goto done; |
380 | } | |
381 | } | |
382 | ||
383 | if (!(ret = crtc_funcs->mode_fixup(crtc, mode, adjusted_mode))) { | |
836e53d7 | 384 | DRM_DEBUG_KMS("CRTC fixup failed\n"); |
f453ba04 DA |
385 | goto done; |
386 | } | |
9440106b | 387 | DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id); |
f453ba04 DA |
388 | |
389 | /* Prepare the encoders and CRTCs before setting the mode. */ | |
390 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
391 | ||
392 | if (encoder->crtc != crtc) | |
393 | continue; | |
394 | encoder_funcs = encoder->helper_private; | |
395 | /* Disable the encoders as the first thing we do. */ | |
396 | encoder_funcs->prepare(encoder); | |
397 | } | |
398 | ||
7bec756c JB |
399 | drm_crtc_prepare_encoders(dev); |
400 | ||
f453ba04 DA |
401 | crtc_funcs->prepare(crtc); |
402 | ||
403 | /* Set up the DPLL and any encoders state that needs to adjust or depend | |
404 | * on the DPLL. | |
405 | */ | |
5c3b82e2 CW |
406 | ret = !crtc_funcs->mode_set(crtc, mode, adjusted_mode, x, y, old_fb); |
407 | if (!ret) | |
408 | goto done; | |
f453ba04 DA |
409 | |
410 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
411 | ||
412 | if (encoder->crtc != crtc) | |
413 | continue; | |
414 | ||
9440106b JG |
415 | DRM_DEBUG_KMS("[ENCODER:%d:%s] set [MODE:%d:%s]\n", |
416 | encoder->base.id, drm_get_encoder_name(encoder), | |
417 | mode->base.id, mode->name); | |
f453ba04 DA |
418 | encoder_funcs = encoder->helper_private; |
419 | encoder_funcs->mode_set(encoder, mode, adjusted_mode); | |
420 | } | |
421 | ||
422 | /* Now enable the clocks, plane, pipe, and connectors that we set up. */ | |
423 | crtc_funcs->commit(crtc); | |
424 | ||
425 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
426 | ||
427 | if (encoder->crtc != crtc) | |
428 | continue; | |
429 | ||
430 | encoder_funcs = encoder->helper_private; | |
431 | encoder_funcs->commit(encoder); | |
432 | ||
433 | } | |
434 | ||
27641c3f MK |
435 | /* Store real post-adjustment hardware mode. */ |
436 | crtc->hwmode = *adjusted_mode; | |
437 | ||
438 | /* Calculate and store various constants which | |
439 | * are later needed by vblank and swap-completion | |
440 | * timestamping. They are derived from true hwmode. | |
441 | */ | |
442 | drm_calc_timestamping_constants(crtc); | |
443 | ||
f453ba04 DA |
444 | /* FIXME: add subpixel order */ |
445 | done: | |
021a8455 | 446 | drm_mode_destroy(dev, adjusted_mode); |
f453ba04 | 447 | if (!ret) { |
27641c3f | 448 | crtc->hwmode = saved_hwmode; |
f453ba04 DA |
449 | crtc->mode = saved_mode; |
450 | crtc->x = saved_x; | |
451 | crtc->y = saved_y; | |
452 | } | |
453 | ||
454 | return ret; | |
455 | } | |
456 | EXPORT_SYMBOL(drm_crtc_helper_set_mode); | |
457 | ||
458 | ||
6eebd6bb CW |
459 | static int |
460 | drm_crtc_helper_disable(struct drm_crtc *crtc) | |
461 | { | |
462 | struct drm_device *dev = crtc->dev; | |
463 | struct drm_connector *connector; | |
464 | struct drm_encoder *encoder; | |
465 | ||
466 | /* Decouple all encoders and their attached connectors from this crtc */ | |
467 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
468 | if (encoder->crtc != crtc) | |
469 | continue; | |
470 | ||
471 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
472 | if (connector->encoder != encoder) | |
473 | continue; | |
474 | ||
475 | connector->encoder = NULL; | |
476 | } | |
477 | } | |
478 | ||
479 | drm_helper_disable_unused_functions(dev); | |
480 | return 0; | |
481 | } | |
482 | ||
f453ba04 DA |
483 | /** |
484 | * drm_crtc_helper_set_config - set a new config from userspace | |
485 | * @crtc: CRTC to setup | |
486 | * @crtc_info: user provided configuration | |
487 | * @new_mode: new mode to set | |
488 | * @connector_set: set of connectors for the new config | |
489 | * @fb: new framebuffer | |
490 | * | |
491 | * LOCKING: | |
492 | * Caller must hold mode config lock. | |
493 | * | |
494 | * Setup a new configuration, provided by the user in @crtc_info, and enable | |
495 | * it. | |
496 | * | |
497 | * RETURNS: | |
498 | * Zero. (FIXME) | |
499 | */ | |
500 | int drm_crtc_helper_set_config(struct drm_mode_set *set) | |
501 | { | |
502 | struct drm_device *dev; | |
e67aae79 MM |
503 | struct drm_crtc *save_crtcs, *new_crtc, *crtc; |
504 | struct drm_encoder *save_encoders, *new_encoder, *encoder; | |
7bec756c | 505 | struct drm_framebuffer *old_fb = NULL; |
4cb72b17 JB |
506 | bool mode_changed = false; /* if true do a full mode set */ |
507 | bool fb_changed = false; /* if true and !mode_changed just do a flip */ | |
e67aae79 | 508 | struct drm_connector *save_connectors, *connector; |
f453ba04 DA |
509 | int count = 0, ro, fail = 0; |
510 | struct drm_crtc_helper_funcs *crtc_funcs; | |
c5006cfe | 511 | struct drm_mode_set save_set; |
f453ba04 | 512 | int ret = 0; |
bf9dc102 | 513 | int i; |
f453ba04 | 514 | |
58367ed6 | 515 | DRM_DEBUG_KMS("\n"); |
f453ba04 DA |
516 | |
517 | if (!set) | |
518 | return -EINVAL; | |
519 | ||
520 | if (!set->crtc) | |
521 | return -EINVAL; | |
522 | ||
523 | if (!set->crtc->helper_private) | |
524 | return -EINVAL; | |
525 | ||
526 | crtc_funcs = set->crtc->helper_private; | |
527 | ||
ede3ff52 CW |
528 | if (!set->mode) |
529 | set->fb = NULL; | |
530 | ||
9440106b JG |
531 | if (set->fb) { |
532 | DRM_DEBUG_KMS("[CRTC:%d] [FB:%d] #connectors=%d (x y) (%i %i)\n", | |
533 | set->crtc->base.id, set->fb->base.id, | |
534 | (int)set->num_connectors, set->x, set->y); | |
535 | } else { | |
ede3ff52 | 536 | DRM_DEBUG_KMS("[CRTC:%d] [NOFB]\n", set->crtc->base.id); |
6eebd6bb | 537 | return drm_crtc_helper_disable(set->crtc); |
9440106b | 538 | } |
f453ba04 DA |
539 | |
540 | dev = set->crtc->dev; | |
541 | ||
e67aae79 MM |
542 | /* Allocate space for the backup of all (non-pointer) crtc, encoder and |
543 | * connector data. */ | |
544 | save_crtcs = kzalloc(dev->mode_config.num_crtc * | |
545 | sizeof(struct drm_crtc), GFP_KERNEL); | |
f453ba04 DA |
546 | if (!save_crtcs) |
547 | return -ENOMEM; | |
548 | ||
e67aae79 MM |
549 | save_encoders = kzalloc(dev->mode_config.num_encoder * |
550 | sizeof(struct drm_encoder), GFP_KERNEL); | |
f453ba04 DA |
551 | if (!save_encoders) { |
552 | kfree(save_crtcs); | |
553 | return -ENOMEM; | |
554 | } | |
555 | ||
e67aae79 MM |
556 | save_connectors = kzalloc(dev->mode_config.num_connector * |
557 | sizeof(struct drm_connector), GFP_KERNEL); | |
558 | if (!save_connectors) { | |
559 | kfree(save_crtcs); | |
560 | kfree(save_encoders); | |
561 | return -ENOMEM; | |
562 | } | |
563 | ||
564 | /* Copy data. Note that driver private data is not affected. | |
565 | * Should anything bad happen only the expected state is | |
566 | * restored, not the drivers personal bookkeeping. | |
567 | */ | |
568 | count = 0; | |
569 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
570 | save_crtcs[count++] = *crtc; | |
571 | } | |
572 | ||
573 | count = 0; | |
574 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
575 | save_encoders[count++] = *encoder; | |
576 | } | |
577 | ||
578 | count = 0; | |
579 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
580 | save_connectors[count++] = *connector; | |
581 | } | |
582 | ||
c5006cfe JB |
583 | save_set.crtc = set->crtc; |
584 | save_set.mode = &set->crtc->mode; | |
585 | save_set.x = set->crtc->x; | |
586 | save_set.y = set->crtc->y; | |
587 | save_set.fb = set->crtc->fb; | |
588 | ||
f453ba04 DA |
589 | /* We should be able to check here if the fb has the same properties |
590 | * and then just flip_or_move it */ | |
591 | if (set->crtc->fb != set->fb) { | |
712531bf | 592 | /* If we have no fb then treat it as a full mode set */ |
7bec756c | 593 | if (set->crtc->fb == NULL) { |
58367ed6 | 594 | DRM_DEBUG_KMS("crtc has no fb, full mode set\n"); |
712531bf | 595 | mode_changed = true; |
4cb72b17 JB |
596 | } else if (set->fb == NULL) { |
597 | mode_changed = true; | |
46e48456 JB |
598 | } else if (set->fb->depth != set->crtc->fb->depth) { |
599 | mode_changed = true; | |
600 | } else if (set->fb->bits_per_pixel != | |
601 | set->crtc->fb->bits_per_pixel) { | |
602 | mode_changed = true; | |
8dff4742 | 603 | } else |
712531bf | 604 | fb_changed = true; |
f453ba04 DA |
605 | } |
606 | ||
607 | if (set->x != set->crtc->x || set->y != set->crtc->y) | |
712531bf | 608 | fb_changed = true; |
f453ba04 DA |
609 | |
610 | if (set->mode && !drm_mode_equal(set->mode, &set->crtc->mode)) { | |
58367ed6 | 611 | DRM_DEBUG_KMS("modes are different, full mode set\n"); |
f453ba04 DA |
612 | drm_mode_debug_printmodeline(&set->crtc->mode); |
613 | drm_mode_debug_printmodeline(set->mode); | |
712531bf | 614 | mode_changed = true; |
f453ba04 DA |
615 | } |
616 | ||
617 | /* a) traverse passed in connector list and get encoders for them */ | |
618 | count = 0; | |
619 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
620 | struct drm_connector_helper_funcs *connector_funcs = | |
621 | connector->helper_private; | |
f453ba04 DA |
622 | new_encoder = connector->encoder; |
623 | for (ro = 0; ro < set->num_connectors; ro++) { | |
624 | if (set->connectors[ro] == connector) { | |
625 | new_encoder = connector_funcs->best_encoder(connector); | |
626 | /* if we can't get an encoder for a connector | |
627 | we are setting now - then fail */ | |
628 | if (new_encoder == NULL) | |
629 | /* don't break so fail path works correct */ | |
630 | fail = 1; | |
631 | break; | |
632 | } | |
633 | } | |
634 | ||
635 | if (new_encoder != connector->encoder) { | |
58367ed6 | 636 | DRM_DEBUG_KMS("encoder changed, full mode switch\n"); |
712531bf | 637 | mode_changed = true; |
ff846ab7 MM |
638 | /* If the encoder is reused for another connector, then |
639 | * the appropriate crtc will be set later. | |
640 | */ | |
ff6fdbed MM |
641 | if (connector->encoder) |
642 | connector->encoder->crtc = NULL; | |
f453ba04 DA |
643 | connector->encoder = new_encoder; |
644 | } | |
645 | } | |
646 | ||
647 | if (fail) { | |
648 | ret = -EINVAL; | |
e67aae79 | 649 | goto fail; |
f453ba04 DA |
650 | } |
651 | ||
652 | count = 0; | |
653 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
654 | if (!connector->encoder) | |
655 | continue; | |
656 | ||
f453ba04 DA |
657 | if (connector->encoder->crtc == set->crtc) |
658 | new_crtc = NULL; | |
659 | else | |
660 | new_crtc = connector->encoder->crtc; | |
661 | ||
662 | for (ro = 0; ro < set->num_connectors; ro++) { | |
663 | if (set->connectors[ro] == connector) | |
664 | new_crtc = set->crtc; | |
665 | } | |
7bec756c JB |
666 | |
667 | /* Make sure the new CRTC will work with the encoder */ | |
668 | if (new_crtc && | |
669 | !drm_encoder_crtc_ok(connector->encoder, new_crtc)) { | |
670 | ret = -EINVAL; | |
e67aae79 | 671 | goto fail; |
7bec756c | 672 | } |
f453ba04 | 673 | if (new_crtc != connector->encoder->crtc) { |
58367ed6 | 674 | DRM_DEBUG_KMS("crtc changed, full mode switch\n"); |
712531bf | 675 | mode_changed = true; |
f453ba04 DA |
676 | connector->encoder->crtc = new_crtc; |
677 | } | |
9440106b JG |
678 | if (new_crtc) { |
679 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] to [CRTC:%d]\n", | |
680 | connector->base.id, drm_get_connector_name(connector), | |
681 | new_crtc->base.id); | |
682 | } else { | |
683 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] to [NOCRTC]\n", | |
684 | connector->base.id, drm_get_connector_name(connector)); | |
685 | } | |
f453ba04 DA |
686 | } |
687 | ||
688 | /* mode_set_base is not a required function */ | |
712531bf JB |
689 | if (fb_changed && !crtc_funcs->mode_set_base) |
690 | mode_changed = true; | |
f453ba04 | 691 | |
712531bf | 692 | if (mode_changed) { |
9334ef75 CW |
693 | set->crtc->enabled = drm_helper_crtc_in_use(set->crtc); |
694 | if (set->crtc->enabled) { | |
58367ed6 ZY |
695 | DRM_DEBUG_KMS("attempting to set mode from" |
696 | " userspace\n"); | |
f453ba04 | 697 | drm_mode_debug_printmodeline(set->mode); |
356ad3cd CW |
698 | old_fb = set->crtc->fb; |
699 | set->crtc->fb = set->fb; | |
f453ba04 | 700 | if (!drm_crtc_helper_set_mode(set->crtc, set->mode, |
3c4fdcfb KH |
701 | set->x, set->y, |
702 | old_fb)) { | |
9440106b JG |
703 | DRM_ERROR("failed to set mode on [CRTC:%d]\n", |
704 | set->crtc->base.id); | |
0ba41e44 | 705 | set->crtc->fb = old_fb; |
f453ba04 | 706 | ret = -EINVAL; |
e67aae79 | 707 | goto fail; |
f453ba04 | 708 | } |
811aaa55 KP |
709 | DRM_DEBUG_KMS("Setting connector DPMS state to on\n"); |
710 | for (i = 0; i < set->num_connectors; i++) { | |
711 | DRM_DEBUG_KMS("\t[CONNECTOR:%d:%s] set DPMS on\n", set->connectors[i]->base.id, | |
712 | drm_get_connector_name(set->connectors[i])); | |
713 | set->connectors[i]->dpms = DRM_MODE_DPMS_ON; | |
714 | } | |
f453ba04 DA |
715 | } |
716 | drm_helper_disable_unused_functions(dev); | |
712531bf | 717 | } else if (fb_changed) { |
9b1596af BS |
718 | set->crtc->x = set->x; |
719 | set->crtc->y = set->y; | |
720 | ||
3c4fdcfb | 721 | old_fb = set->crtc->fb; |
f453ba04 DA |
722 | if (set->crtc->fb != set->fb) |
723 | set->crtc->fb = set->fb; | |
5c3b82e2 CW |
724 | ret = crtc_funcs->mode_set_base(set->crtc, |
725 | set->x, set->y, old_fb); | |
0ba41e44 CW |
726 | if (ret != 0) { |
727 | set->crtc->fb = old_fb; | |
e67aae79 | 728 | goto fail; |
0ba41e44 | 729 | } |
f453ba04 DA |
730 | } |
731 | ||
e67aae79 | 732 | kfree(save_connectors); |
f453ba04 DA |
733 | kfree(save_encoders); |
734 | kfree(save_crtcs); | |
735 | return 0; | |
736 | ||
e67aae79 MM |
737 | fail: |
738 | /* Restore all previous data. */ | |
f453ba04 | 739 | count = 0; |
e67aae79 MM |
740 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
741 | *crtc = save_crtcs[count++]; | |
742 | } | |
e62fb64e | 743 | |
e67aae79 MM |
744 | count = 0; |
745 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
746 | *encoder = save_encoders[count++]; | |
e62fb64e | 747 | } |
e67aae79 | 748 | |
f453ba04 DA |
749 | count = 0; |
750 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
e67aae79 | 751 | *connector = save_connectors[count++]; |
f453ba04 | 752 | } |
e67aae79 | 753 | |
c5006cfe JB |
754 | /* Try to restore the config */ |
755 | if (mode_changed && | |
756 | !drm_crtc_helper_set_mode(save_set.crtc, save_set.mode, save_set.x, | |
757 | save_set.y, save_set.fb)) | |
758 | DRM_ERROR("failed to restore config after modeset failure\n"); | |
759 | ||
e67aae79 | 760 | kfree(save_connectors); |
f453ba04 | 761 | kfree(save_encoders); |
e67aae79 | 762 | kfree(save_crtcs); |
f453ba04 DA |
763 | return ret; |
764 | } | |
765 | EXPORT_SYMBOL(drm_crtc_helper_set_config); | |
766 | ||
c9fb15f6 KP |
767 | static int drm_helper_choose_encoder_dpms(struct drm_encoder *encoder) |
768 | { | |
769 | int dpms = DRM_MODE_DPMS_OFF; | |
770 | struct drm_connector *connector; | |
771 | struct drm_device *dev = encoder->dev; | |
772 | ||
773 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) | |
774 | if (connector->encoder == encoder) | |
775 | if (connector->dpms < dpms) | |
776 | dpms = connector->dpms; | |
777 | return dpms; | |
778 | } | |
779 | ||
780 | static int drm_helper_choose_crtc_dpms(struct drm_crtc *crtc) | |
781 | { | |
782 | int dpms = DRM_MODE_DPMS_OFF; | |
783 | struct drm_connector *connector; | |
784 | struct drm_device *dev = crtc->dev; | |
785 | ||
786 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) | |
787 | if (connector->encoder && connector->encoder->crtc == crtc) | |
788 | if (connector->dpms < dpms) | |
789 | dpms = connector->dpms; | |
790 | return dpms; | |
791 | } | |
792 | ||
793 | /** | |
794 | * drm_helper_connector_dpms | |
795 | * @connector affected connector | |
796 | * @mode DPMS mode | |
797 | * | |
798 | * Calls the low-level connector DPMS function, then | |
799 | * calls appropriate encoder and crtc DPMS functions as well | |
800 | */ | |
801 | void drm_helper_connector_dpms(struct drm_connector *connector, int mode) | |
802 | { | |
803 | struct drm_encoder *encoder = connector->encoder; | |
804 | struct drm_crtc *crtc = encoder ? encoder->crtc : NULL; | |
805 | int old_dpms; | |
806 | ||
807 | if (mode == connector->dpms) | |
808 | return; | |
809 | ||
810 | old_dpms = connector->dpms; | |
811 | connector->dpms = mode; | |
812 | ||
813 | /* from off to on, do crtc then encoder */ | |
814 | if (mode < old_dpms) { | |
815 | if (crtc) { | |
816 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; | |
817 | if (crtc_funcs->dpms) | |
818 | (*crtc_funcs->dpms) (crtc, | |
819 | drm_helper_choose_crtc_dpms(crtc)); | |
820 | } | |
821 | if (encoder) { | |
822 | struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; | |
823 | if (encoder_funcs->dpms) | |
824 | (*encoder_funcs->dpms) (encoder, | |
825 | drm_helper_choose_encoder_dpms(encoder)); | |
826 | } | |
827 | } | |
828 | ||
829 | /* from on to off, do encoder then crtc */ | |
830 | if (mode > old_dpms) { | |
831 | if (encoder) { | |
832 | struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; | |
833 | if (encoder_funcs->dpms) | |
834 | (*encoder_funcs->dpms) (encoder, | |
835 | drm_helper_choose_encoder_dpms(encoder)); | |
836 | } | |
837 | if (crtc) { | |
838 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; | |
839 | if (crtc_funcs->dpms) | |
840 | (*crtc_funcs->dpms) (crtc, | |
841 | drm_helper_choose_crtc_dpms(crtc)); | |
842 | } | |
843 | } | |
844 | ||
845 | return; | |
846 | } | |
847 | EXPORT_SYMBOL(drm_helper_connector_dpms); | |
848 | ||
f453ba04 DA |
849 | int drm_helper_mode_fill_fb_struct(struct drm_framebuffer *fb, |
850 | struct drm_mode_fb_cmd *mode_cmd) | |
851 | { | |
852 | fb->width = mode_cmd->width; | |
853 | fb->height = mode_cmd->height; | |
854 | fb->pitch = mode_cmd->pitch; | |
855 | fb->bits_per_pixel = mode_cmd->bpp; | |
856 | fb->depth = mode_cmd->depth; | |
857 | ||
858 | return 0; | |
859 | } | |
860 | EXPORT_SYMBOL(drm_helper_mode_fill_fb_struct); | |
861 | ||
862 | int drm_helper_resume_force_mode(struct drm_device *dev) | |
863 | { | |
864 | struct drm_crtc *crtc; | |
89347bb8 DJ |
865 | struct drm_encoder *encoder; |
866 | struct drm_encoder_helper_funcs *encoder_funcs; | |
867 | struct drm_crtc_helper_funcs *crtc_funcs; | |
f453ba04 DA |
868 | int ret; |
869 | ||
870 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
871 | ||
872 | if (!crtc->enabled) | |
873 | continue; | |
874 | ||
3c4fdcfb KH |
875 | ret = drm_crtc_helper_set_mode(crtc, &crtc->mode, |
876 | crtc->x, crtc->y, crtc->fb); | |
f453ba04 DA |
877 | |
878 | if (ret == false) | |
879 | DRM_ERROR("failed to set mode on crtc %p\n", crtc); | |
89347bb8 DJ |
880 | |
881 | /* Turn off outputs that were already powered off */ | |
882 | if (drm_helper_choose_crtc_dpms(crtc)) { | |
883 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
884 | ||
885 | if(encoder->crtc != crtc) | |
886 | continue; | |
887 | ||
888 | encoder_funcs = encoder->helper_private; | |
889 | if (encoder_funcs->dpms) | |
890 | (*encoder_funcs->dpms) (encoder, | |
891 | drm_helper_choose_encoder_dpms(encoder)); | |
89347bb8 | 892 | } |
817e631e CW |
893 | |
894 | crtc_funcs = crtc->helper_private; | |
895 | if (crtc_funcs->dpms) | |
896 | (*crtc_funcs->dpms) (crtc, | |
897 | drm_helper_choose_crtc_dpms(crtc)); | |
89347bb8 | 898 | } |
f453ba04 | 899 | } |
af4fcb57 ZY |
900 | /* disable the unused connectors while restoring the modesetting */ |
901 | drm_helper_disable_unused_functions(dev); | |
f453ba04 DA |
902 | return 0; |
903 | } | |
904 | EXPORT_SYMBOL(drm_helper_resume_force_mode); | |
eb1f8e4f | 905 | |
eb1f8e4f | 906 | #define DRM_OUTPUT_POLL_PERIOD (10*HZ) |
991ea75c | 907 | static void output_poll_execute(struct work_struct *work) |
eb1f8e4f | 908 | { |
991ea75c TH |
909 | struct delayed_work *delayed_work = to_delayed_work(work); |
910 | struct drm_device *dev = container_of(delayed_work, struct drm_device, mode_config.output_poll_work); | |
eb1f8e4f | 911 | struct drm_connector *connector; |
c5027dec | 912 | enum drm_connector_status old_status; |
eb1f8e4f | 913 | bool repoll = false, changed = false; |
eb1f8e4f | 914 | |
e58f637b CW |
915 | if (!drm_kms_helper_poll) |
916 | return; | |
917 | ||
eb1f8e4f DA |
918 | mutex_lock(&dev->mode_config.mutex); |
919 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
920 | ||
921 | /* if this is HPD or polled don't check it - | |
922 | TV out for instance */ | |
923 | if (!connector->polled) | |
924 | continue; | |
925 | ||
926 | else if (connector->polled & (DRM_CONNECTOR_POLL_CONNECT | DRM_CONNECTOR_POLL_DISCONNECT)) | |
927 | repoll = true; | |
928 | ||
929 | old_status = connector->status; | |
930 | /* if we are connected and don't want to poll for disconnect | |
931 | skip it */ | |
932 | if (old_status == connector_status_connected && | |
933 | !(connector->polled & DRM_CONNECTOR_POLL_DISCONNECT) && | |
934 | !(connector->polled & DRM_CONNECTOR_POLL_HPD)) | |
935 | continue; | |
936 | ||
c5027dec | 937 | connector->status = connector->funcs->detect(connector, false); |
0f16830e CW |
938 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] status updated from %d to %d\n", |
939 | connector->base.id, | |
940 | drm_get_connector_name(connector), | |
941 | old_status, connector->status); | |
c5027dec | 942 | if (old_status != connector->status) |
eb1f8e4f DA |
943 | changed = true; |
944 | } | |
945 | ||
946 | mutex_unlock(&dev->mode_config.mutex); | |
947 | ||
948 | if (changed) { | |
949 | /* send a uevent + call fbdev */ | |
950 | drm_sysfs_hotplug_event(dev); | |
951 | if (dev->mode_config.funcs->output_poll_changed) | |
952 | dev->mode_config.funcs->output_poll_changed(dev); | |
953 | } | |
954 | ||
9a919c46 TH |
955 | if (repoll) |
956 | queue_delayed_work(system_nrt_wq, delayed_work, DRM_OUTPUT_POLL_PERIOD); | |
eb1f8e4f DA |
957 | } |
958 | ||
fbf81762 DA |
959 | void drm_kms_helper_poll_disable(struct drm_device *dev) |
960 | { | |
961 | if (!dev->mode_config.poll_enabled) | |
962 | return; | |
991ea75c | 963 | cancel_delayed_work_sync(&dev->mode_config.output_poll_work); |
fbf81762 DA |
964 | } |
965 | EXPORT_SYMBOL(drm_kms_helper_poll_disable); | |
966 | ||
967 | void drm_kms_helper_poll_enable(struct drm_device *dev) | |
eb1f8e4f | 968 | { |
eb1f8e4f | 969 | bool poll = false; |
fbf81762 | 970 | struct drm_connector *connector; |
eb1f8e4f | 971 | |
e58f637b CW |
972 | if (!dev->mode_config.poll_enabled || !drm_kms_helper_poll) |
973 | return; | |
974 | ||
eb1f8e4f DA |
975 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
976 | if (connector->polled) | |
977 | poll = true; | |
978 | } | |
eb1f8e4f | 979 | |
9a919c46 TH |
980 | if (poll) |
981 | queue_delayed_work(system_nrt_wq, &dev->mode_config.output_poll_work, DRM_OUTPUT_POLL_PERIOD); | |
eb1f8e4f | 982 | } |
fbf81762 DA |
983 | EXPORT_SYMBOL(drm_kms_helper_poll_enable); |
984 | ||
985 | void drm_kms_helper_poll_init(struct drm_device *dev) | |
986 | { | |
991ea75c | 987 | INIT_DELAYED_WORK(&dev->mode_config.output_poll_work, output_poll_execute); |
fbf81762 DA |
988 | dev->mode_config.poll_enabled = true; |
989 | ||
990 | drm_kms_helper_poll_enable(dev); | |
991 | } | |
eb1f8e4f DA |
992 | EXPORT_SYMBOL(drm_kms_helper_poll_init); |
993 | ||
994 | void drm_kms_helper_poll_fini(struct drm_device *dev) | |
995 | { | |
fbf81762 | 996 | drm_kms_helper_poll_disable(dev); |
eb1f8e4f DA |
997 | } |
998 | EXPORT_SYMBOL(drm_kms_helper_poll_fini); | |
999 | ||
1000 | void drm_helper_hpd_irq_event(struct drm_device *dev) | |
1001 | { | |
1002 | if (!dev->mode_config.poll_enabled) | |
1003 | return; | |
e58f637b | 1004 | |
991ea75c TH |
1005 | /* kill timer and schedule immediate execution, this doesn't block */ |
1006 | cancel_delayed_work(&dev->mode_config.output_poll_work); | |
e58f637b CW |
1007 | if (drm_kms_helper_poll) |
1008 | queue_delayed_work(system_nrt_wq, &dev->mode_config.output_poll_work, 0); | |
eb1f8e4f DA |
1009 | } |
1010 | EXPORT_SYMBOL(drm_helper_hpd_irq_event); |