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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" | |
308e5bcb | 37 | #include "drm_fourcc.h" |
f453ba04 | 38 | #include "drm_crtc_helper.h" |
d50ba256 | 39 | #include "drm_fb_helper.h" |
da0df92b | 40 | #include "drm_edid.h" |
f453ba04 | 41 | |
e58f637b CW |
42 | static bool drm_kms_helper_poll = true; |
43 | module_param_named(poll, drm_kms_helper_poll, bool, 0600); | |
44 | ||
6714977b | 45 | static void drm_mode_validate_flag(struct drm_connector *connector, |
46 | int flags) | |
47 | { | |
a1178ca0 | 48 | struct drm_display_mode *mode; |
6714977b | 49 | |
50 | if (flags == (DRM_MODE_FLAG_DBLSCAN | DRM_MODE_FLAG_INTERLACE)) | |
51 | return; | |
52 | ||
a1178ca0 | 53 | list_for_each_entry(mode, &connector->modes, head) { |
6714977b | 54 | if ((mode->flags & DRM_MODE_FLAG_INTERLACE) && |
55 | !(flags & DRM_MODE_FLAG_INTERLACE)) | |
56 | mode->status = MODE_NO_INTERLACE; | |
57 | if ((mode->flags & DRM_MODE_FLAG_DBLSCAN) && | |
58 | !(flags & DRM_MODE_FLAG_DBLSCAN)) | |
59 | mode->status = MODE_NO_DBLESCAN; | |
60 | } | |
61 | ||
62 | return; | |
63 | } | |
64 | ||
f453ba04 | 65 | /** |
38651674 | 66 | * drm_helper_probe_single_connector_modes - get complete set of display modes |
f453ba04 DA |
67 | * @dev: DRM device |
68 | * @maxX: max width for modes | |
69 | * @maxY: max height for modes | |
70 | * | |
71 | * LOCKING: | |
72 | * Caller must hold mode config lock. | |
73 | * | |
74 | * Based on @dev's mode_config layout, scan all the connectors and try to detect | |
75 | * modes on them. Modes will first be added to the connector's probed_modes | |
76 | * list, then culled (based on validity and the @maxX, @maxY parameters) and | |
77 | * put into the normal modes list. | |
78 | * | |
79 | * Intended to be used either at bootup time or when major configuration | |
80 | * changes have occurred. | |
81 | * | |
82 | * FIXME: take into account monitor limits | |
40a518d9 JB |
83 | * |
84 | * RETURNS: | |
85 | * Number of modes found on @connector. | |
f453ba04 | 86 | */ |
40a518d9 JB |
87 | int drm_helper_probe_single_connector_modes(struct drm_connector *connector, |
88 | uint32_t maxX, uint32_t maxY) | |
f453ba04 DA |
89 | { |
90 | struct drm_device *dev = connector->dev; | |
a1178ca0 | 91 | struct drm_display_mode *mode; |
f453ba04 DA |
92 | struct drm_connector_helper_funcs *connector_funcs = |
93 | connector->helper_private; | |
40a518d9 | 94 | int count = 0; |
6714977b | 95 | int mode_flags = 0; |
f453ba04 | 96 | |
9440106b JG |
97 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", connector->base.id, |
98 | drm_get_connector_name(connector)); | |
f453ba04 | 99 | /* set all modes to the unverified state */ |
a1178ca0 | 100 | list_for_each_entry(mode, &connector->modes, head) |
f453ba04 DA |
101 | mode->status = MODE_UNVERIFIED; |
102 | ||
d50ba256 DA |
103 | if (connector->force) { |
104 | if (connector->force == DRM_FORCE_ON) | |
105 | connector->status = connector_status_connected; | |
106 | else | |
107 | connector->status = connector_status_disconnected; | |
108 | if (connector->funcs->force) | |
109 | connector->funcs->force(connector); | |
e58f637b | 110 | } else { |
930a9e28 | 111 | connector->status = connector->funcs->detect(connector, true); |
551402a3 | 112 | drm_kms_helper_poll_enable(dev); |
e58f637b | 113 | } |
f453ba04 DA |
114 | |
115 | if (connector->status == connector_status_disconnected) { | |
9440106b JG |
116 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] disconnected\n", |
117 | connector->base.id, drm_get_connector_name(connector)); | |
72539832 | 118 | drm_mode_connector_update_edid_property(connector, NULL); |
620f3781 | 119 | goto prune; |
f453ba04 DA |
120 | } |
121 | ||
da0df92b CE |
122 | #ifdef CONFIG_DRM_LOAD_EDID_FIRMWARE |
123 | count = drm_load_edid_firmware(connector); | |
124 | if (count == 0) | |
125 | #endif | |
126 | count = (*connector_funcs->get_modes)(connector); | |
127 | ||
c7ef35a9 | 128 | if (count == 0 && connector->status == connector_status_connected) |
9632b41f | 129 | count = drm_add_modes_noedid(connector, 1024, 768); |
c7ef35a9 CW |
130 | if (count == 0) |
131 | goto prune; | |
f453ba04 | 132 | |
40a518d9 | 133 | drm_mode_connector_list_update(connector); |
f453ba04 DA |
134 | |
135 | if (maxX && maxY) | |
136 | drm_mode_validate_size(dev, &connector->modes, maxX, | |
137 | maxY, 0); | |
6714977b | 138 | |
139 | if (connector->interlace_allowed) | |
140 | mode_flags |= DRM_MODE_FLAG_INTERLACE; | |
141 | if (connector->doublescan_allowed) | |
142 | mode_flags |= DRM_MODE_FLAG_DBLSCAN; | |
143 | drm_mode_validate_flag(connector, mode_flags); | |
144 | ||
a1178ca0 | 145 | list_for_each_entry(mode, &connector->modes, head) { |
f453ba04 DA |
146 | if (mode->status == MODE_OK) |
147 | mode->status = connector_funcs->mode_valid(connector, | |
148 | mode); | |
149 | } | |
150 | ||
620f3781 | 151 | prune: |
f453ba04 DA |
152 | drm_mode_prune_invalid(dev, &connector->modes, true); |
153 | ||
40a518d9 JB |
154 | if (list_empty(&connector->modes)) |
155 | return 0; | |
f453ba04 DA |
156 | |
157 | drm_mode_sort(&connector->modes); | |
158 | ||
9440106b JG |
159 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] probed modes :\n", connector->base.id, |
160 | drm_get_connector_name(connector)); | |
a1178ca0 | 161 | list_for_each_entry(mode, &connector->modes, head) { |
f453ba04 DA |
162 | mode->vrefresh = drm_mode_vrefresh(mode); |
163 | ||
164 | drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V); | |
165 | drm_mode_debug_printmodeline(mode); | |
166 | } | |
40a518d9 JB |
167 | |
168 | return count; | |
f453ba04 DA |
169 | } |
170 | EXPORT_SYMBOL(drm_helper_probe_single_connector_modes); | |
171 | ||
c9fb15f6 KP |
172 | /** |
173 | * drm_helper_encoder_in_use - check if a given encoder is in use | |
174 | * @encoder: encoder to check | |
175 | * | |
176 | * LOCKING: | |
177 | * Caller must hold mode config lock. | |
178 | * | |
179 | * Walk @encoders's DRM device's mode_config and see if it's in use. | |
180 | * | |
181 | * RETURNS: | |
182 | * True if @encoder is part of the mode_config, false otherwise. | |
183 | */ | |
184 | bool drm_helper_encoder_in_use(struct drm_encoder *encoder) | |
185 | { | |
186 | struct drm_connector *connector; | |
187 | struct drm_device *dev = encoder->dev; | |
188 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) | |
189 | if (connector->encoder == encoder) | |
190 | return true; | |
191 | return false; | |
192 | } | |
193 | EXPORT_SYMBOL(drm_helper_encoder_in_use); | |
194 | ||
f453ba04 DA |
195 | /** |
196 | * drm_helper_crtc_in_use - check if a given CRTC is in a mode_config | |
197 | * @crtc: CRTC to check | |
198 | * | |
199 | * LOCKING: | |
200 | * Caller must hold mode config lock. | |
201 | * | |
202 | * Walk @crtc's DRM device's mode_config and see if it's in use. | |
203 | * | |
204 | * RETURNS: | |
205 | * True if @crtc is part of the mode_config, false otherwise. | |
206 | */ | |
207 | bool drm_helper_crtc_in_use(struct drm_crtc *crtc) | |
208 | { | |
209 | struct drm_encoder *encoder; | |
210 | struct drm_device *dev = crtc->dev; | |
211 | /* FIXME: Locking around list access? */ | |
212 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) | |
c9fb15f6 | 213 | if (encoder->crtc == crtc && drm_helper_encoder_in_use(encoder)) |
f453ba04 DA |
214 | return true; |
215 | return false; | |
216 | } | |
217 | EXPORT_SYMBOL(drm_helper_crtc_in_use); | |
218 | ||
86a1b9d1 BS |
219 | static void |
220 | drm_encoder_disable(struct drm_encoder *encoder) | |
221 | { | |
222 | struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; | |
223 | ||
224 | if (encoder_funcs->disable) | |
225 | (*encoder_funcs->disable)(encoder); | |
226 | else | |
227 | (*encoder_funcs->dpms)(encoder, DRM_MODE_DPMS_OFF); | |
228 | } | |
229 | ||
f453ba04 | 230 | /** |
89347bb8 | 231 | * drm_helper_disable_unused_functions - disable unused objects |
f453ba04 DA |
232 | * @dev: DRM device |
233 | * | |
234 | * LOCKING: | |
235 | * Caller must hold mode config lock. | |
236 | * | |
237 | * If an connector or CRTC isn't part of @dev's mode_config, it can be disabled | |
238 | * by calling its dpms function, which should power it off. | |
239 | */ | |
240 | void drm_helper_disable_unused_functions(struct drm_device *dev) | |
241 | { | |
242 | struct drm_encoder *encoder; | |
a3a0544b | 243 | struct drm_connector *connector; |
f453ba04 DA |
244 | struct drm_crtc *crtc; |
245 | ||
a3a0544b DA |
246 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
247 | if (!connector->encoder) | |
248 | continue; | |
249 | if (connector->status == connector_status_disconnected) | |
250 | connector->encoder = NULL; | |
251 | } | |
252 | ||
f453ba04 | 253 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
92971021 | 254 | if (!drm_helper_encoder_in_use(encoder)) { |
86a1b9d1 | 255 | drm_encoder_disable(encoder); |
9c552dd7 DA |
256 | /* disconnector encoder from any connector */ |
257 | encoder->crtc = NULL; | |
a3a0544b | 258 | } |
f453ba04 DA |
259 | } |
260 | ||
261 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
262 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; | |
263 | crtc->enabled = drm_helper_crtc_in_use(crtc); | |
264 | if (!crtc->enabled) { | |
5c8d7171 AD |
265 | if (crtc_funcs->disable) |
266 | (*crtc_funcs->disable)(crtc); | |
267 | else | |
268 | (*crtc_funcs->dpms)(crtc, DRM_MODE_DPMS_OFF); | |
f453ba04 DA |
269 | crtc->fb = NULL; |
270 | } | |
271 | } | |
272 | } | |
273 | EXPORT_SYMBOL(drm_helper_disable_unused_functions); | |
274 | ||
7bec756c JB |
275 | /** |
276 | * drm_encoder_crtc_ok - can a given crtc drive a given encoder? | |
277 | * @encoder: encoder to test | |
278 | * @crtc: crtc to test | |
279 | * | |
280 | * Return false if @encoder can't be driven by @crtc, true otherwise. | |
281 | */ | |
282 | static bool drm_encoder_crtc_ok(struct drm_encoder *encoder, | |
283 | struct drm_crtc *crtc) | |
284 | { | |
285 | struct drm_device *dev; | |
286 | struct drm_crtc *tmp; | |
287 | int crtc_mask = 1; | |
288 | ||
fce7d61b | 289 | WARN(!crtc, "checking null crtc?\n"); |
7bec756c JB |
290 | |
291 | dev = crtc->dev; | |
292 | ||
293 | list_for_each_entry(tmp, &dev->mode_config.crtc_list, head) { | |
294 | if (tmp == crtc) | |
295 | break; | |
296 | crtc_mask <<= 1; | |
297 | } | |
298 | ||
299 | if (encoder->possible_crtcs & crtc_mask) | |
300 | return true; | |
301 | return false; | |
302 | } | |
303 | ||
304 | /* | |
305 | * Check the CRTC we're going to map each output to vs. its current | |
306 | * CRTC. If they don't match, we have to disable the output and the CRTC | |
307 | * since the driver will have to re-route things. | |
308 | */ | |
309 | static void | |
310 | drm_crtc_prepare_encoders(struct drm_device *dev) | |
311 | { | |
312 | struct drm_encoder_helper_funcs *encoder_funcs; | |
313 | struct drm_encoder *encoder; | |
314 | ||
315 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
316 | encoder_funcs = encoder->helper_private; | |
317 | /* Disable unused encoders */ | |
318 | if (encoder->crtc == NULL) | |
86a1b9d1 | 319 | drm_encoder_disable(encoder); |
7bec756c JB |
320 | /* Disable encoders whose CRTC is about to change */ |
321 | if (encoder_funcs->get_crtc && | |
322 | encoder->crtc != (*encoder_funcs->get_crtc)(encoder)) | |
86a1b9d1 | 323 | drm_encoder_disable(encoder); |
7bec756c JB |
324 | } |
325 | } | |
326 | ||
f453ba04 DA |
327 | /** |
328 | * drm_crtc_set_mode - set a mode | |
329 | * @crtc: CRTC to program | |
330 | * @mode: mode to use | |
331 | * @x: width of mode | |
332 | * @y: height of mode | |
333 | * | |
334 | * LOCKING: | |
335 | * Caller must hold mode config lock. | |
336 | * | |
337 | * Try to set @mode on @crtc. Give @crtc and its associated connectors a chance | |
338 | * to fixup or reject the mode prior to trying to set it. | |
339 | * | |
340 | * RETURNS: | |
341 | * True if the mode was set successfully, or false otherwise. | |
342 | */ | |
343 | bool drm_crtc_helper_set_mode(struct drm_crtc *crtc, | |
344 | struct drm_display_mode *mode, | |
3c4fdcfb KH |
345 | int x, int y, |
346 | struct drm_framebuffer *old_fb) | |
f453ba04 DA |
347 | { |
348 | struct drm_device *dev = crtc->dev; | |
27641c3f | 349 | struct drm_display_mode *adjusted_mode, saved_mode, saved_hwmode; |
f453ba04 DA |
350 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
351 | struct drm_encoder_helper_funcs *encoder_funcs; | |
352 | int saved_x, saved_y; | |
353 | struct drm_encoder *encoder; | |
354 | bool ret = true; | |
355 | ||
f453ba04 | 356 | crtc->enabled = drm_helper_crtc_in_use(crtc); |
f453ba04 DA |
357 | if (!crtc->enabled) |
358 | return true; | |
359 | ||
021a8455 | 360 | adjusted_mode = drm_mode_duplicate(dev, mode); |
6bfc56aa VS |
361 | if (!adjusted_mode) |
362 | return false; | |
021a8455 | 363 | |
27641c3f | 364 | saved_hwmode = crtc->hwmode; |
f453ba04 DA |
365 | saved_mode = crtc->mode; |
366 | saved_x = crtc->x; | |
367 | saved_y = crtc->y; | |
368 | ||
369 | /* Update crtc values up front so the driver can rely on them for mode | |
370 | * setting. | |
371 | */ | |
372 | crtc->mode = *mode; | |
373 | crtc->x = x; | |
374 | crtc->y = y; | |
375 | ||
f453ba04 DA |
376 | /* Pass our mode to the connectors and the CRTC to give them a chance to |
377 | * adjust it according to limitations or connector properties, and also | |
378 | * a chance to reject the mode entirely. | |
379 | */ | |
380 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
381 | ||
382 | if (encoder->crtc != crtc) | |
383 | continue; | |
384 | encoder_funcs = encoder->helper_private; | |
385 | if (!(ret = encoder_funcs->mode_fixup(encoder, mode, | |
386 | adjusted_mode))) { | |
836e53d7 | 387 | DRM_DEBUG_KMS("Encoder fixup failed\n"); |
f453ba04 DA |
388 | goto done; |
389 | } | |
390 | } | |
391 | ||
392 | if (!(ret = crtc_funcs->mode_fixup(crtc, mode, adjusted_mode))) { | |
836e53d7 | 393 | DRM_DEBUG_KMS("CRTC fixup failed\n"); |
f453ba04 DA |
394 | goto done; |
395 | } | |
9440106b | 396 | DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id); |
f453ba04 DA |
397 | |
398 | /* Prepare the encoders and CRTCs before setting the mode. */ | |
399 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
400 | ||
401 | if (encoder->crtc != crtc) | |
402 | continue; | |
403 | encoder_funcs = encoder->helper_private; | |
404 | /* Disable the encoders as the first thing we do. */ | |
405 | encoder_funcs->prepare(encoder); | |
406 | } | |
407 | ||
7bec756c JB |
408 | drm_crtc_prepare_encoders(dev); |
409 | ||
f453ba04 DA |
410 | crtc_funcs->prepare(crtc); |
411 | ||
412 | /* Set up the DPLL and any encoders state that needs to adjust or depend | |
413 | * on the DPLL. | |
414 | */ | |
5c3b82e2 CW |
415 | ret = !crtc_funcs->mode_set(crtc, mode, adjusted_mode, x, y, old_fb); |
416 | if (!ret) | |
417 | goto done; | |
f453ba04 DA |
418 | |
419 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
420 | ||
421 | if (encoder->crtc != crtc) | |
422 | continue; | |
423 | ||
9440106b JG |
424 | DRM_DEBUG_KMS("[ENCODER:%d:%s] set [MODE:%d:%s]\n", |
425 | encoder->base.id, drm_get_encoder_name(encoder), | |
426 | mode->base.id, mode->name); | |
f453ba04 DA |
427 | encoder_funcs = encoder->helper_private; |
428 | encoder_funcs->mode_set(encoder, mode, adjusted_mode); | |
429 | } | |
430 | ||
431 | /* Now enable the clocks, plane, pipe, and connectors that we set up. */ | |
432 | crtc_funcs->commit(crtc); | |
433 | ||
434 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
435 | ||
436 | if (encoder->crtc != crtc) | |
437 | continue; | |
438 | ||
439 | encoder_funcs = encoder->helper_private; | |
440 | encoder_funcs->commit(encoder); | |
441 | ||
442 | } | |
443 | ||
27641c3f MK |
444 | /* Store real post-adjustment hardware mode. */ |
445 | crtc->hwmode = *adjusted_mode; | |
446 | ||
447 | /* Calculate and store various constants which | |
448 | * are later needed by vblank and swap-completion | |
449 | * timestamping. They are derived from true hwmode. | |
450 | */ | |
451 | drm_calc_timestamping_constants(crtc); | |
452 | ||
f453ba04 DA |
453 | /* FIXME: add subpixel order */ |
454 | done: | |
021a8455 | 455 | drm_mode_destroy(dev, adjusted_mode); |
f453ba04 | 456 | if (!ret) { |
27641c3f | 457 | crtc->hwmode = saved_hwmode; |
f453ba04 DA |
458 | crtc->mode = saved_mode; |
459 | crtc->x = saved_x; | |
460 | crtc->y = saved_y; | |
461 | } | |
462 | ||
463 | return ret; | |
464 | } | |
465 | EXPORT_SYMBOL(drm_crtc_helper_set_mode); | |
466 | ||
467 | ||
6eebd6bb CW |
468 | static int |
469 | drm_crtc_helper_disable(struct drm_crtc *crtc) | |
470 | { | |
471 | struct drm_device *dev = crtc->dev; | |
472 | struct drm_connector *connector; | |
473 | struct drm_encoder *encoder; | |
474 | ||
475 | /* Decouple all encoders and their attached connectors from this crtc */ | |
476 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
477 | if (encoder->crtc != crtc) | |
478 | continue; | |
479 | ||
480 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
481 | if (connector->encoder != encoder) | |
482 | continue; | |
483 | ||
484 | connector->encoder = NULL; | |
485 | } | |
486 | } | |
487 | ||
488 | drm_helper_disable_unused_functions(dev); | |
489 | return 0; | |
490 | } | |
491 | ||
f453ba04 DA |
492 | /** |
493 | * drm_crtc_helper_set_config - set a new config from userspace | |
494 | * @crtc: CRTC to setup | |
495 | * @crtc_info: user provided configuration | |
496 | * @new_mode: new mode to set | |
497 | * @connector_set: set of connectors for the new config | |
498 | * @fb: new framebuffer | |
499 | * | |
500 | * LOCKING: | |
501 | * Caller must hold mode config lock. | |
502 | * | |
503 | * Setup a new configuration, provided by the user in @crtc_info, and enable | |
504 | * it. | |
505 | * | |
506 | * RETURNS: | |
507 | * Zero. (FIXME) | |
508 | */ | |
509 | int drm_crtc_helper_set_config(struct drm_mode_set *set) | |
510 | { | |
511 | struct drm_device *dev; | |
e67aae79 MM |
512 | struct drm_crtc *save_crtcs, *new_crtc, *crtc; |
513 | struct drm_encoder *save_encoders, *new_encoder, *encoder; | |
7bec756c | 514 | struct drm_framebuffer *old_fb = NULL; |
4cb72b17 JB |
515 | bool mode_changed = false; /* if true do a full mode set */ |
516 | bool fb_changed = false; /* if true and !mode_changed just do a flip */ | |
e67aae79 | 517 | struct drm_connector *save_connectors, *connector; |
f453ba04 DA |
518 | int count = 0, ro, fail = 0; |
519 | struct drm_crtc_helper_funcs *crtc_funcs; | |
c5006cfe | 520 | struct drm_mode_set save_set; |
4a1b0714 | 521 | int ret; |
bf9dc102 | 522 | int i; |
f453ba04 | 523 | |
58367ed6 | 524 | DRM_DEBUG_KMS("\n"); |
f453ba04 DA |
525 | |
526 | if (!set) | |
527 | return -EINVAL; | |
528 | ||
529 | if (!set->crtc) | |
530 | return -EINVAL; | |
531 | ||
532 | if (!set->crtc->helper_private) | |
533 | return -EINVAL; | |
534 | ||
535 | crtc_funcs = set->crtc->helper_private; | |
536 | ||
ede3ff52 CW |
537 | if (!set->mode) |
538 | set->fb = NULL; | |
539 | ||
9440106b JG |
540 | if (set->fb) { |
541 | DRM_DEBUG_KMS("[CRTC:%d] [FB:%d] #connectors=%d (x y) (%i %i)\n", | |
542 | set->crtc->base.id, set->fb->base.id, | |
543 | (int)set->num_connectors, set->x, set->y); | |
544 | } else { | |
ede3ff52 | 545 | DRM_DEBUG_KMS("[CRTC:%d] [NOFB]\n", set->crtc->base.id); |
6eebd6bb | 546 | return drm_crtc_helper_disable(set->crtc); |
9440106b | 547 | } |
f453ba04 DA |
548 | |
549 | dev = set->crtc->dev; | |
550 | ||
e67aae79 MM |
551 | /* Allocate space for the backup of all (non-pointer) crtc, encoder and |
552 | * connector data. */ | |
553 | save_crtcs = kzalloc(dev->mode_config.num_crtc * | |
554 | sizeof(struct drm_crtc), GFP_KERNEL); | |
f453ba04 DA |
555 | if (!save_crtcs) |
556 | return -ENOMEM; | |
557 | ||
e67aae79 MM |
558 | save_encoders = kzalloc(dev->mode_config.num_encoder * |
559 | sizeof(struct drm_encoder), GFP_KERNEL); | |
f453ba04 DA |
560 | if (!save_encoders) { |
561 | kfree(save_crtcs); | |
562 | return -ENOMEM; | |
563 | } | |
564 | ||
e67aae79 MM |
565 | save_connectors = kzalloc(dev->mode_config.num_connector * |
566 | sizeof(struct drm_connector), GFP_KERNEL); | |
567 | if (!save_connectors) { | |
568 | kfree(save_crtcs); | |
569 | kfree(save_encoders); | |
570 | return -ENOMEM; | |
571 | } | |
572 | ||
573 | /* Copy data. Note that driver private data is not affected. | |
574 | * Should anything bad happen only the expected state is | |
575 | * restored, not the drivers personal bookkeeping. | |
576 | */ | |
577 | count = 0; | |
578 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
579 | save_crtcs[count++] = *crtc; | |
580 | } | |
581 | ||
582 | count = 0; | |
583 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
584 | save_encoders[count++] = *encoder; | |
585 | } | |
586 | ||
587 | count = 0; | |
588 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
589 | save_connectors[count++] = *connector; | |
590 | } | |
591 | ||
c5006cfe JB |
592 | save_set.crtc = set->crtc; |
593 | save_set.mode = &set->crtc->mode; | |
594 | save_set.x = set->crtc->x; | |
595 | save_set.y = set->crtc->y; | |
596 | save_set.fb = set->crtc->fb; | |
597 | ||
f453ba04 DA |
598 | /* We should be able to check here if the fb has the same properties |
599 | * and then just flip_or_move it */ | |
600 | if (set->crtc->fb != set->fb) { | |
712531bf | 601 | /* If we have no fb then treat it as a full mode set */ |
7bec756c | 602 | if (set->crtc->fb == NULL) { |
58367ed6 | 603 | DRM_DEBUG_KMS("crtc has no fb, full mode set\n"); |
712531bf | 604 | mode_changed = true; |
4cb72b17 JB |
605 | } else if (set->fb == NULL) { |
606 | mode_changed = true; | |
46e48456 JB |
607 | } else if (set->fb->depth != set->crtc->fb->depth) { |
608 | mode_changed = true; | |
609 | } else if (set->fb->bits_per_pixel != | |
610 | set->crtc->fb->bits_per_pixel) { | |
611 | mode_changed = true; | |
8dff4742 | 612 | } else |
712531bf | 613 | fb_changed = true; |
f453ba04 DA |
614 | } |
615 | ||
616 | if (set->x != set->crtc->x || set->y != set->crtc->y) | |
712531bf | 617 | fb_changed = true; |
f453ba04 DA |
618 | |
619 | if (set->mode && !drm_mode_equal(set->mode, &set->crtc->mode)) { | |
58367ed6 | 620 | DRM_DEBUG_KMS("modes are different, full mode set\n"); |
f453ba04 DA |
621 | drm_mode_debug_printmodeline(&set->crtc->mode); |
622 | drm_mode_debug_printmodeline(set->mode); | |
712531bf | 623 | mode_changed = true; |
f453ba04 DA |
624 | } |
625 | ||
626 | /* a) traverse passed in connector list and get encoders for them */ | |
627 | count = 0; | |
628 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
629 | struct drm_connector_helper_funcs *connector_funcs = | |
630 | connector->helper_private; | |
f453ba04 DA |
631 | new_encoder = connector->encoder; |
632 | for (ro = 0; ro < set->num_connectors; ro++) { | |
633 | if (set->connectors[ro] == connector) { | |
634 | new_encoder = connector_funcs->best_encoder(connector); | |
635 | /* if we can't get an encoder for a connector | |
636 | we are setting now - then fail */ | |
637 | if (new_encoder == NULL) | |
638 | /* don't break so fail path works correct */ | |
639 | fail = 1; | |
640 | break; | |
641 | } | |
642 | } | |
643 | ||
644 | if (new_encoder != connector->encoder) { | |
58367ed6 | 645 | DRM_DEBUG_KMS("encoder changed, full mode switch\n"); |
712531bf | 646 | mode_changed = true; |
ff846ab7 MM |
647 | /* If the encoder is reused for another connector, then |
648 | * the appropriate crtc will be set later. | |
649 | */ | |
ff6fdbed MM |
650 | if (connector->encoder) |
651 | connector->encoder->crtc = NULL; | |
f453ba04 DA |
652 | connector->encoder = new_encoder; |
653 | } | |
654 | } | |
655 | ||
656 | if (fail) { | |
657 | ret = -EINVAL; | |
e67aae79 | 658 | goto fail; |
f453ba04 DA |
659 | } |
660 | ||
661 | count = 0; | |
662 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
663 | if (!connector->encoder) | |
664 | continue; | |
665 | ||
f453ba04 DA |
666 | if (connector->encoder->crtc == set->crtc) |
667 | new_crtc = NULL; | |
668 | else | |
669 | new_crtc = connector->encoder->crtc; | |
670 | ||
671 | for (ro = 0; ro < set->num_connectors; ro++) { | |
672 | if (set->connectors[ro] == connector) | |
673 | new_crtc = set->crtc; | |
674 | } | |
7bec756c JB |
675 | |
676 | /* Make sure the new CRTC will work with the encoder */ | |
677 | if (new_crtc && | |
678 | !drm_encoder_crtc_ok(connector->encoder, new_crtc)) { | |
679 | ret = -EINVAL; | |
e67aae79 | 680 | goto fail; |
7bec756c | 681 | } |
f453ba04 | 682 | if (new_crtc != connector->encoder->crtc) { |
58367ed6 | 683 | DRM_DEBUG_KMS("crtc changed, full mode switch\n"); |
712531bf | 684 | mode_changed = true; |
f453ba04 DA |
685 | connector->encoder->crtc = new_crtc; |
686 | } | |
9440106b JG |
687 | if (new_crtc) { |
688 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] to [CRTC:%d]\n", | |
689 | connector->base.id, drm_get_connector_name(connector), | |
690 | new_crtc->base.id); | |
691 | } else { | |
692 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] to [NOCRTC]\n", | |
693 | connector->base.id, drm_get_connector_name(connector)); | |
694 | } | |
f453ba04 DA |
695 | } |
696 | ||
697 | /* mode_set_base is not a required function */ | |
712531bf JB |
698 | if (fb_changed && !crtc_funcs->mode_set_base) |
699 | mode_changed = true; | |
f453ba04 | 700 | |
712531bf | 701 | if (mode_changed) { |
9334ef75 CW |
702 | set->crtc->enabled = drm_helper_crtc_in_use(set->crtc); |
703 | if (set->crtc->enabled) { | |
58367ed6 ZY |
704 | DRM_DEBUG_KMS("attempting to set mode from" |
705 | " userspace\n"); | |
f453ba04 | 706 | drm_mode_debug_printmodeline(set->mode); |
356ad3cd CW |
707 | old_fb = set->crtc->fb; |
708 | set->crtc->fb = set->fb; | |
f453ba04 | 709 | if (!drm_crtc_helper_set_mode(set->crtc, set->mode, |
3c4fdcfb KH |
710 | set->x, set->y, |
711 | old_fb)) { | |
9440106b JG |
712 | DRM_ERROR("failed to set mode on [CRTC:%d]\n", |
713 | set->crtc->base.id); | |
0ba41e44 | 714 | set->crtc->fb = old_fb; |
f453ba04 | 715 | ret = -EINVAL; |
e67aae79 | 716 | goto fail; |
f453ba04 | 717 | } |
811aaa55 KP |
718 | DRM_DEBUG_KMS("Setting connector DPMS state to on\n"); |
719 | for (i = 0; i < set->num_connectors; i++) { | |
720 | DRM_DEBUG_KMS("\t[CONNECTOR:%d:%s] set DPMS on\n", set->connectors[i]->base.id, | |
721 | drm_get_connector_name(set->connectors[i])); | |
c7548837 | 722 | set->connectors[i]->funcs->dpms(set->connectors[i], DRM_MODE_DPMS_ON); |
811aaa55 | 723 | } |
f453ba04 DA |
724 | } |
725 | drm_helper_disable_unused_functions(dev); | |
712531bf | 726 | } else if (fb_changed) { |
9b1596af BS |
727 | set->crtc->x = set->x; |
728 | set->crtc->y = set->y; | |
729 | ||
3c4fdcfb | 730 | old_fb = set->crtc->fb; |
f453ba04 DA |
731 | if (set->crtc->fb != set->fb) |
732 | set->crtc->fb = set->fb; | |
5c3b82e2 CW |
733 | ret = crtc_funcs->mode_set_base(set->crtc, |
734 | set->x, set->y, old_fb); | |
0ba41e44 CW |
735 | if (ret != 0) { |
736 | set->crtc->fb = old_fb; | |
e67aae79 | 737 | goto fail; |
0ba41e44 | 738 | } |
f453ba04 DA |
739 | } |
740 | ||
e67aae79 | 741 | kfree(save_connectors); |
f453ba04 DA |
742 | kfree(save_encoders); |
743 | kfree(save_crtcs); | |
744 | return 0; | |
745 | ||
e67aae79 MM |
746 | fail: |
747 | /* Restore all previous data. */ | |
f453ba04 | 748 | count = 0; |
e67aae79 MM |
749 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
750 | *crtc = save_crtcs[count++]; | |
751 | } | |
e62fb64e | 752 | |
e67aae79 MM |
753 | count = 0; |
754 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
755 | *encoder = save_encoders[count++]; | |
e62fb64e | 756 | } |
e67aae79 | 757 | |
f453ba04 DA |
758 | count = 0; |
759 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
e67aae79 | 760 | *connector = save_connectors[count++]; |
f453ba04 | 761 | } |
e67aae79 | 762 | |
c5006cfe JB |
763 | /* Try to restore the config */ |
764 | if (mode_changed && | |
765 | !drm_crtc_helper_set_mode(save_set.crtc, save_set.mode, save_set.x, | |
766 | save_set.y, save_set.fb)) | |
767 | DRM_ERROR("failed to restore config after modeset failure\n"); | |
768 | ||
e67aae79 | 769 | kfree(save_connectors); |
f453ba04 | 770 | kfree(save_encoders); |
e67aae79 | 771 | kfree(save_crtcs); |
f453ba04 DA |
772 | return ret; |
773 | } | |
774 | EXPORT_SYMBOL(drm_crtc_helper_set_config); | |
775 | ||
c9fb15f6 KP |
776 | static int drm_helper_choose_encoder_dpms(struct drm_encoder *encoder) |
777 | { | |
778 | int dpms = DRM_MODE_DPMS_OFF; | |
779 | struct drm_connector *connector; | |
780 | struct drm_device *dev = encoder->dev; | |
781 | ||
782 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) | |
783 | if (connector->encoder == encoder) | |
784 | if (connector->dpms < dpms) | |
785 | dpms = connector->dpms; | |
786 | return dpms; | |
787 | } | |
788 | ||
789 | static int drm_helper_choose_crtc_dpms(struct drm_crtc *crtc) | |
790 | { | |
791 | int dpms = DRM_MODE_DPMS_OFF; | |
792 | struct drm_connector *connector; | |
793 | struct drm_device *dev = crtc->dev; | |
794 | ||
795 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) | |
796 | if (connector->encoder && connector->encoder->crtc == crtc) | |
797 | if (connector->dpms < dpms) | |
798 | dpms = connector->dpms; | |
799 | return dpms; | |
800 | } | |
801 | ||
802 | /** | |
803 | * drm_helper_connector_dpms | |
804 | * @connector affected connector | |
805 | * @mode DPMS mode | |
806 | * | |
807 | * Calls the low-level connector DPMS function, then | |
808 | * calls appropriate encoder and crtc DPMS functions as well | |
809 | */ | |
810 | void drm_helper_connector_dpms(struct drm_connector *connector, int mode) | |
811 | { | |
812 | struct drm_encoder *encoder = connector->encoder; | |
813 | struct drm_crtc *crtc = encoder ? encoder->crtc : NULL; | |
814 | int old_dpms; | |
815 | ||
816 | if (mode == connector->dpms) | |
817 | return; | |
818 | ||
819 | old_dpms = connector->dpms; | |
820 | connector->dpms = mode; | |
821 | ||
822 | /* from off to on, do crtc then encoder */ | |
823 | if (mode < old_dpms) { | |
824 | if (crtc) { | |
825 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; | |
826 | if (crtc_funcs->dpms) | |
827 | (*crtc_funcs->dpms) (crtc, | |
828 | drm_helper_choose_crtc_dpms(crtc)); | |
829 | } | |
830 | if (encoder) { | |
831 | struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; | |
832 | if (encoder_funcs->dpms) | |
833 | (*encoder_funcs->dpms) (encoder, | |
834 | drm_helper_choose_encoder_dpms(encoder)); | |
835 | } | |
836 | } | |
837 | ||
838 | /* from on to off, do encoder then crtc */ | |
839 | if (mode > old_dpms) { | |
840 | if (encoder) { | |
841 | struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; | |
842 | if (encoder_funcs->dpms) | |
843 | (*encoder_funcs->dpms) (encoder, | |
844 | drm_helper_choose_encoder_dpms(encoder)); | |
845 | } | |
846 | if (crtc) { | |
847 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; | |
848 | if (crtc_funcs->dpms) | |
849 | (*crtc_funcs->dpms) (crtc, | |
850 | drm_helper_choose_crtc_dpms(crtc)); | |
851 | } | |
852 | } | |
853 | ||
854 | return; | |
855 | } | |
856 | EXPORT_SYMBOL(drm_helper_connector_dpms); | |
857 | ||
f453ba04 | 858 | int drm_helper_mode_fill_fb_struct(struct drm_framebuffer *fb, |
308e5bcb | 859 | struct drm_mode_fb_cmd2 *mode_cmd) |
f453ba04 | 860 | { |
01f2c773 VS |
861 | int i; |
862 | ||
f453ba04 DA |
863 | fb->width = mode_cmd->width; |
864 | fb->height = mode_cmd->height; | |
01f2c773 VS |
865 | for (i = 0; i < 4; i++) { |
866 | fb->pitches[i] = mode_cmd->pitches[i]; | |
867 | fb->offsets[i] = mode_cmd->offsets[i]; | |
868 | } | |
248dbc23 | 869 | drm_fb_get_bpp_depth(mode_cmd->pixel_format, &fb->depth, |
308e5bcb JB |
870 | &fb->bits_per_pixel); |
871 | fb->pixel_format = mode_cmd->pixel_format; | |
f453ba04 DA |
872 | |
873 | return 0; | |
874 | } | |
875 | EXPORT_SYMBOL(drm_helper_mode_fill_fb_struct); | |
876 | ||
877 | int drm_helper_resume_force_mode(struct drm_device *dev) | |
878 | { | |
879 | struct drm_crtc *crtc; | |
89347bb8 DJ |
880 | struct drm_encoder *encoder; |
881 | struct drm_encoder_helper_funcs *encoder_funcs; | |
882 | struct drm_crtc_helper_funcs *crtc_funcs; | |
f453ba04 DA |
883 | int ret; |
884 | ||
885 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
886 | ||
887 | if (!crtc->enabled) | |
888 | continue; | |
889 | ||
3c4fdcfb KH |
890 | ret = drm_crtc_helper_set_mode(crtc, &crtc->mode, |
891 | crtc->x, crtc->y, crtc->fb); | |
f453ba04 DA |
892 | |
893 | if (ret == false) | |
894 | DRM_ERROR("failed to set mode on crtc %p\n", crtc); | |
89347bb8 DJ |
895 | |
896 | /* Turn off outputs that were already powered off */ | |
897 | if (drm_helper_choose_crtc_dpms(crtc)) { | |
898 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
899 | ||
900 | if(encoder->crtc != crtc) | |
901 | continue; | |
902 | ||
903 | encoder_funcs = encoder->helper_private; | |
904 | if (encoder_funcs->dpms) | |
905 | (*encoder_funcs->dpms) (encoder, | |
906 | drm_helper_choose_encoder_dpms(encoder)); | |
89347bb8 | 907 | } |
817e631e CW |
908 | |
909 | crtc_funcs = crtc->helper_private; | |
910 | if (crtc_funcs->dpms) | |
911 | (*crtc_funcs->dpms) (crtc, | |
912 | drm_helper_choose_crtc_dpms(crtc)); | |
89347bb8 | 913 | } |
f453ba04 | 914 | } |
af4fcb57 ZY |
915 | /* disable the unused connectors while restoring the modesetting */ |
916 | drm_helper_disable_unused_functions(dev); | |
f453ba04 DA |
917 | return 0; |
918 | } | |
919 | EXPORT_SYMBOL(drm_helper_resume_force_mode); | |
eb1f8e4f | 920 | |
eb1f8e4f | 921 | #define DRM_OUTPUT_POLL_PERIOD (10*HZ) |
991ea75c | 922 | static void output_poll_execute(struct work_struct *work) |
eb1f8e4f | 923 | { |
991ea75c TH |
924 | struct delayed_work *delayed_work = to_delayed_work(work); |
925 | struct drm_device *dev = container_of(delayed_work, struct drm_device, mode_config.output_poll_work); | |
eb1f8e4f | 926 | struct drm_connector *connector; |
c5027dec | 927 | enum drm_connector_status old_status; |
eb1f8e4f | 928 | bool repoll = false, changed = false; |
eb1f8e4f | 929 | |
e58f637b CW |
930 | if (!drm_kms_helper_poll) |
931 | return; | |
932 | ||
eb1f8e4f DA |
933 | mutex_lock(&dev->mode_config.mutex); |
934 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
935 | ||
936 | /* if this is HPD or polled don't check it - | |
937 | TV out for instance */ | |
938 | if (!connector->polled) | |
939 | continue; | |
940 | ||
941 | else if (connector->polled & (DRM_CONNECTOR_POLL_CONNECT | DRM_CONNECTOR_POLL_DISCONNECT)) | |
942 | repoll = true; | |
943 | ||
944 | old_status = connector->status; | |
945 | /* if we are connected and don't want to poll for disconnect | |
946 | skip it */ | |
947 | if (old_status == connector_status_connected && | |
948 | !(connector->polled & DRM_CONNECTOR_POLL_DISCONNECT) && | |
949 | !(connector->polled & DRM_CONNECTOR_POLL_HPD)) | |
950 | continue; | |
951 | ||
c5027dec | 952 | connector->status = connector->funcs->detect(connector, false); |
0f16830e CW |
953 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] status updated from %d to %d\n", |
954 | connector->base.id, | |
955 | drm_get_connector_name(connector), | |
956 | old_status, connector->status); | |
c5027dec | 957 | if (old_status != connector->status) |
eb1f8e4f DA |
958 | changed = true; |
959 | } | |
960 | ||
961 | mutex_unlock(&dev->mode_config.mutex); | |
962 | ||
963 | if (changed) { | |
964 | /* send a uevent + call fbdev */ | |
965 | drm_sysfs_hotplug_event(dev); | |
966 | if (dev->mode_config.funcs->output_poll_changed) | |
967 | dev->mode_config.funcs->output_poll_changed(dev); | |
968 | } | |
969 | ||
9a919c46 TH |
970 | if (repoll) |
971 | queue_delayed_work(system_nrt_wq, delayed_work, DRM_OUTPUT_POLL_PERIOD); | |
eb1f8e4f DA |
972 | } |
973 | ||
fbf81762 DA |
974 | void drm_kms_helper_poll_disable(struct drm_device *dev) |
975 | { | |
976 | if (!dev->mode_config.poll_enabled) | |
977 | return; | |
991ea75c | 978 | cancel_delayed_work_sync(&dev->mode_config.output_poll_work); |
fbf81762 DA |
979 | } |
980 | EXPORT_SYMBOL(drm_kms_helper_poll_disable); | |
981 | ||
982 | void drm_kms_helper_poll_enable(struct drm_device *dev) | |
eb1f8e4f | 983 | { |
eb1f8e4f | 984 | bool poll = false; |
fbf81762 | 985 | struct drm_connector *connector; |
eb1f8e4f | 986 | |
e58f637b CW |
987 | if (!dev->mode_config.poll_enabled || !drm_kms_helper_poll) |
988 | return; | |
989 | ||
eb1f8e4f DA |
990 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
991 | if (connector->polled) | |
992 | poll = true; | |
993 | } | |
eb1f8e4f | 994 | |
9a919c46 TH |
995 | if (poll) |
996 | queue_delayed_work(system_nrt_wq, &dev->mode_config.output_poll_work, DRM_OUTPUT_POLL_PERIOD); | |
eb1f8e4f | 997 | } |
fbf81762 DA |
998 | EXPORT_SYMBOL(drm_kms_helper_poll_enable); |
999 | ||
1000 | void drm_kms_helper_poll_init(struct drm_device *dev) | |
1001 | { | |
991ea75c | 1002 | INIT_DELAYED_WORK(&dev->mode_config.output_poll_work, output_poll_execute); |
fbf81762 DA |
1003 | dev->mode_config.poll_enabled = true; |
1004 | ||
1005 | drm_kms_helper_poll_enable(dev); | |
1006 | } | |
eb1f8e4f DA |
1007 | EXPORT_SYMBOL(drm_kms_helper_poll_init); |
1008 | ||
1009 | void drm_kms_helper_poll_fini(struct drm_device *dev) | |
1010 | { | |
fbf81762 | 1011 | drm_kms_helper_poll_disable(dev); |
eb1f8e4f DA |
1012 | } |
1013 | EXPORT_SYMBOL(drm_kms_helper_poll_fini); | |
1014 | ||
1015 | void drm_helper_hpd_irq_event(struct drm_device *dev) | |
1016 | { | |
1017 | if (!dev->mode_config.poll_enabled) | |
1018 | return; | |
e58f637b | 1019 | |
991ea75c TH |
1020 | /* kill timer and schedule immediate execution, this doesn't block */ |
1021 | cancel_delayed_work(&dev->mode_config.output_poll_work); | |
e58f637b CW |
1022 | if (drm_kms_helper_poll) |
1023 | queue_delayed_work(system_nrt_wq, &dev->mode_config.output_poll_work, 0); | |
eb1f8e4f DA |
1024 | } |
1025 | EXPORT_SYMBOL(drm_helper_hpd_irq_event); |