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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 | |
760285e7 DH |
35 | #include <drm/drmP.h> |
36 | #include <drm/drm_crtc.h> | |
37 | #include <drm/drm_fourcc.h> | |
38 | #include <drm/drm_crtc_helper.h> | |
39 | #include <drm/drm_fb_helper.h> | |
40 | #include <drm/drm_edid.h> | |
f453ba04 | 41 | |
cfc1a062 DV |
42 | void drm_helper_move_panel_connectors_to_head(struct drm_device *dev) |
43 | { | |
44 | struct drm_connector *connector, *tmp; | |
45 | struct list_head panel_list; | |
46 | ||
47 | INIT_LIST_HEAD(&panel_list); | |
48 | ||
49 | list_for_each_entry_safe(connector, tmp, | |
50 | &dev->mode_config.connector_list, head) { | |
51 | if (connector->connector_type == DRM_MODE_CONNECTOR_LVDS || | |
52 | connector->connector_type == DRM_MODE_CONNECTOR_eDP) | |
53 | list_move_tail(&connector->head, &panel_list); | |
54 | } | |
55 | ||
56 | list_splice(&panel_list, &dev->mode_config.connector_list); | |
57 | } | |
58 | EXPORT_SYMBOL(drm_helper_move_panel_connectors_to_head); | |
59 | ||
e58f637b CW |
60 | static bool drm_kms_helper_poll = true; |
61 | module_param_named(poll, drm_kms_helper_poll, bool, 0600); | |
62 | ||
6714977b | 63 | static void drm_mode_validate_flag(struct drm_connector *connector, |
64 | int flags) | |
65 | { | |
a1178ca0 | 66 | struct drm_display_mode *mode; |
6714977b | 67 | |
68 | if (flags == (DRM_MODE_FLAG_DBLSCAN | DRM_MODE_FLAG_INTERLACE)) | |
69 | return; | |
70 | ||
a1178ca0 | 71 | list_for_each_entry(mode, &connector->modes, head) { |
6714977b | 72 | if ((mode->flags & DRM_MODE_FLAG_INTERLACE) && |
73 | !(flags & DRM_MODE_FLAG_INTERLACE)) | |
74 | mode->status = MODE_NO_INTERLACE; | |
75 | if ((mode->flags & DRM_MODE_FLAG_DBLSCAN) && | |
76 | !(flags & DRM_MODE_FLAG_DBLSCAN)) | |
77 | mode->status = MODE_NO_DBLESCAN; | |
78 | } | |
79 | ||
80 | return; | |
81 | } | |
82 | ||
f453ba04 | 83 | /** |
38651674 | 84 | * drm_helper_probe_single_connector_modes - get complete set of display modes |
f453ba04 DA |
85 | * @dev: DRM device |
86 | * @maxX: max width for modes | |
87 | * @maxY: max height for modes | |
88 | * | |
89 | * LOCKING: | |
90 | * Caller must hold mode config lock. | |
91 | * | |
92 | * Based on @dev's mode_config layout, scan all the connectors and try to detect | |
93 | * modes on them. Modes will first be added to the connector's probed_modes | |
94 | * list, then culled (based on validity and the @maxX, @maxY parameters) and | |
95 | * put into the normal modes list. | |
96 | * | |
97 | * Intended to be used either at bootup time or when major configuration | |
98 | * changes have occurred. | |
99 | * | |
100 | * FIXME: take into account monitor limits | |
40a518d9 JB |
101 | * |
102 | * RETURNS: | |
103 | * Number of modes found on @connector. | |
f453ba04 | 104 | */ |
40a518d9 JB |
105 | int drm_helper_probe_single_connector_modes(struct drm_connector *connector, |
106 | uint32_t maxX, uint32_t maxY) | |
f453ba04 DA |
107 | { |
108 | struct drm_device *dev = connector->dev; | |
a1178ca0 | 109 | struct drm_display_mode *mode; |
f453ba04 DA |
110 | struct drm_connector_helper_funcs *connector_funcs = |
111 | connector->helper_private; | |
40a518d9 | 112 | int count = 0; |
6714977b | 113 | int mode_flags = 0; |
f453ba04 | 114 | |
9440106b JG |
115 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", connector->base.id, |
116 | drm_get_connector_name(connector)); | |
f453ba04 | 117 | /* set all modes to the unverified state */ |
a1178ca0 | 118 | list_for_each_entry(mode, &connector->modes, head) |
f453ba04 DA |
119 | mode->status = MODE_UNVERIFIED; |
120 | ||
d50ba256 DA |
121 | if (connector->force) { |
122 | if (connector->force == DRM_FORCE_ON) | |
123 | connector->status = connector_status_connected; | |
124 | else | |
125 | connector->status = connector_status_disconnected; | |
126 | if (connector->funcs->force) | |
127 | connector->funcs->force(connector); | |
e58f637b | 128 | } else { |
930a9e28 | 129 | connector->status = connector->funcs->detect(connector, true); |
551402a3 | 130 | drm_kms_helper_poll_enable(dev); |
e58f637b | 131 | } |
f453ba04 DA |
132 | |
133 | if (connector->status == connector_status_disconnected) { | |
9440106b JG |
134 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] disconnected\n", |
135 | connector->base.id, drm_get_connector_name(connector)); | |
72539832 | 136 | drm_mode_connector_update_edid_property(connector, NULL); |
620f3781 | 137 | goto prune; |
f453ba04 DA |
138 | } |
139 | ||
da0df92b CE |
140 | #ifdef CONFIG_DRM_LOAD_EDID_FIRMWARE |
141 | count = drm_load_edid_firmware(connector); | |
142 | if (count == 0) | |
143 | #endif | |
144 | count = (*connector_funcs->get_modes)(connector); | |
145 | ||
c7ef35a9 | 146 | if (count == 0 && connector->status == connector_status_connected) |
9632b41f | 147 | count = drm_add_modes_noedid(connector, 1024, 768); |
c7ef35a9 CW |
148 | if (count == 0) |
149 | goto prune; | |
f453ba04 | 150 | |
40a518d9 | 151 | drm_mode_connector_list_update(connector); |
f453ba04 DA |
152 | |
153 | if (maxX && maxY) | |
154 | drm_mode_validate_size(dev, &connector->modes, maxX, | |
155 | maxY, 0); | |
6714977b | 156 | |
157 | if (connector->interlace_allowed) | |
158 | mode_flags |= DRM_MODE_FLAG_INTERLACE; | |
159 | if (connector->doublescan_allowed) | |
160 | mode_flags |= DRM_MODE_FLAG_DBLSCAN; | |
161 | drm_mode_validate_flag(connector, mode_flags); | |
162 | ||
a1178ca0 | 163 | list_for_each_entry(mode, &connector->modes, head) { |
f453ba04 DA |
164 | if (mode->status == MODE_OK) |
165 | mode->status = connector_funcs->mode_valid(connector, | |
166 | mode); | |
167 | } | |
168 | ||
620f3781 | 169 | prune: |
f453ba04 DA |
170 | drm_mode_prune_invalid(dev, &connector->modes, true); |
171 | ||
40a518d9 JB |
172 | if (list_empty(&connector->modes)) |
173 | return 0; | |
f453ba04 DA |
174 | |
175 | drm_mode_sort(&connector->modes); | |
176 | ||
9440106b JG |
177 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] probed modes :\n", connector->base.id, |
178 | drm_get_connector_name(connector)); | |
a1178ca0 | 179 | list_for_each_entry(mode, &connector->modes, head) { |
f453ba04 DA |
180 | mode->vrefresh = drm_mode_vrefresh(mode); |
181 | ||
182 | drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V); | |
183 | drm_mode_debug_printmodeline(mode); | |
184 | } | |
40a518d9 JB |
185 | |
186 | return count; | |
f453ba04 DA |
187 | } |
188 | EXPORT_SYMBOL(drm_helper_probe_single_connector_modes); | |
189 | ||
c9fb15f6 KP |
190 | /** |
191 | * drm_helper_encoder_in_use - check if a given encoder is in use | |
192 | * @encoder: encoder to check | |
193 | * | |
194 | * LOCKING: | |
195 | * Caller must hold mode config lock. | |
196 | * | |
197 | * Walk @encoders's DRM device's mode_config and see if it's in use. | |
198 | * | |
199 | * RETURNS: | |
200 | * True if @encoder is part of the mode_config, false otherwise. | |
201 | */ | |
202 | bool drm_helper_encoder_in_use(struct drm_encoder *encoder) | |
203 | { | |
204 | struct drm_connector *connector; | |
205 | struct drm_device *dev = encoder->dev; | |
206 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) | |
207 | if (connector->encoder == encoder) | |
208 | return true; | |
209 | return false; | |
210 | } | |
211 | EXPORT_SYMBOL(drm_helper_encoder_in_use); | |
212 | ||
f453ba04 DA |
213 | /** |
214 | * drm_helper_crtc_in_use - check if a given CRTC is in a mode_config | |
215 | * @crtc: CRTC to check | |
216 | * | |
217 | * LOCKING: | |
218 | * Caller must hold mode config lock. | |
219 | * | |
220 | * Walk @crtc's DRM device's mode_config and see if it's in use. | |
221 | * | |
222 | * RETURNS: | |
223 | * True if @crtc is part of the mode_config, false otherwise. | |
224 | */ | |
225 | bool drm_helper_crtc_in_use(struct drm_crtc *crtc) | |
226 | { | |
227 | struct drm_encoder *encoder; | |
228 | struct drm_device *dev = crtc->dev; | |
229 | /* FIXME: Locking around list access? */ | |
230 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) | |
c9fb15f6 | 231 | if (encoder->crtc == crtc && drm_helper_encoder_in_use(encoder)) |
f453ba04 DA |
232 | return true; |
233 | return false; | |
234 | } | |
235 | EXPORT_SYMBOL(drm_helper_crtc_in_use); | |
236 | ||
86a1b9d1 BS |
237 | static void |
238 | drm_encoder_disable(struct drm_encoder *encoder) | |
239 | { | |
240 | struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; | |
241 | ||
242 | if (encoder_funcs->disable) | |
243 | (*encoder_funcs->disable)(encoder); | |
244 | else | |
245 | (*encoder_funcs->dpms)(encoder, DRM_MODE_DPMS_OFF); | |
246 | } | |
247 | ||
f453ba04 | 248 | /** |
89347bb8 | 249 | * drm_helper_disable_unused_functions - disable unused objects |
f453ba04 DA |
250 | * @dev: DRM device |
251 | * | |
252 | * LOCKING: | |
253 | * Caller must hold mode config lock. | |
254 | * | |
255 | * If an connector or CRTC isn't part of @dev's mode_config, it can be disabled | |
256 | * by calling its dpms function, which should power it off. | |
257 | */ | |
258 | void drm_helper_disable_unused_functions(struct drm_device *dev) | |
259 | { | |
260 | struct drm_encoder *encoder; | |
a3a0544b | 261 | struct drm_connector *connector; |
f453ba04 DA |
262 | struct drm_crtc *crtc; |
263 | ||
a3a0544b DA |
264 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
265 | if (!connector->encoder) | |
266 | continue; | |
267 | if (connector->status == connector_status_disconnected) | |
268 | connector->encoder = NULL; | |
269 | } | |
270 | ||
f453ba04 | 271 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
92971021 | 272 | if (!drm_helper_encoder_in_use(encoder)) { |
86a1b9d1 | 273 | drm_encoder_disable(encoder); |
9c552dd7 DA |
274 | /* disconnector encoder from any connector */ |
275 | encoder->crtc = NULL; | |
a3a0544b | 276 | } |
f453ba04 DA |
277 | } |
278 | ||
279 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
280 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; | |
281 | crtc->enabled = drm_helper_crtc_in_use(crtc); | |
282 | if (!crtc->enabled) { | |
5c8d7171 AD |
283 | if (crtc_funcs->disable) |
284 | (*crtc_funcs->disable)(crtc); | |
285 | else | |
286 | (*crtc_funcs->dpms)(crtc, DRM_MODE_DPMS_OFF); | |
f453ba04 DA |
287 | crtc->fb = NULL; |
288 | } | |
289 | } | |
290 | } | |
291 | EXPORT_SYMBOL(drm_helper_disable_unused_functions); | |
292 | ||
7bec756c JB |
293 | /** |
294 | * drm_encoder_crtc_ok - can a given crtc drive a given encoder? | |
295 | * @encoder: encoder to test | |
296 | * @crtc: crtc to test | |
297 | * | |
298 | * Return false if @encoder can't be driven by @crtc, true otherwise. | |
299 | */ | |
300 | static bool drm_encoder_crtc_ok(struct drm_encoder *encoder, | |
301 | struct drm_crtc *crtc) | |
302 | { | |
303 | struct drm_device *dev; | |
304 | struct drm_crtc *tmp; | |
305 | int crtc_mask = 1; | |
306 | ||
fce7d61b | 307 | WARN(!crtc, "checking null crtc?\n"); |
7bec756c JB |
308 | |
309 | dev = crtc->dev; | |
310 | ||
311 | list_for_each_entry(tmp, &dev->mode_config.crtc_list, head) { | |
312 | if (tmp == crtc) | |
313 | break; | |
314 | crtc_mask <<= 1; | |
315 | } | |
316 | ||
317 | if (encoder->possible_crtcs & crtc_mask) | |
318 | return true; | |
319 | return false; | |
320 | } | |
321 | ||
322 | /* | |
323 | * Check the CRTC we're going to map each output to vs. its current | |
324 | * CRTC. If they don't match, we have to disable the output and the CRTC | |
325 | * since the driver will have to re-route things. | |
326 | */ | |
327 | static void | |
328 | drm_crtc_prepare_encoders(struct drm_device *dev) | |
329 | { | |
330 | struct drm_encoder_helper_funcs *encoder_funcs; | |
331 | struct drm_encoder *encoder; | |
332 | ||
333 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
334 | encoder_funcs = encoder->helper_private; | |
335 | /* Disable unused encoders */ | |
336 | if (encoder->crtc == NULL) | |
86a1b9d1 | 337 | drm_encoder_disable(encoder); |
7bec756c JB |
338 | /* Disable encoders whose CRTC is about to change */ |
339 | if (encoder_funcs->get_crtc && | |
340 | encoder->crtc != (*encoder_funcs->get_crtc)(encoder)) | |
86a1b9d1 | 341 | drm_encoder_disable(encoder); |
7bec756c JB |
342 | } |
343 | } | |
344 | ||
f453ba04 DA |
345 | /** |
346 | * drm_crtc_set_mode - set a mode | |
347 | * @crtc: CRTC to program | |
348 | * @mode: mode to use | |
4c9287c6 AD |
349 | * @x: horizontal offset into the surface |
350 | * @y: vertical offset into the surface | |
f453ba04 DA |
351 | * |
352 | * LOCKING: | |
353 | * Caller must hold mode config lock. | |
354 | * | |
355 | * Try to set @mode on @crtc. Give @crtc and its associated connectors a chance | |
356 | * to fixup or reject the mode prior to trying to set it. | |
357 | * | |
358 | * RETURNS: | |
359 | * True if the mode was set successfully, or false otherwise. | |
360 | */ | |
361 | bool drm_crtc_helper_set_mode(struct drm_crtc *crtc, | |
362 | struct drm_display_mode *mode, | |
3c4fdcfb KH |
363 | int x, int y, |
364 | struct drm_framebuffer *old_fb) | |
f453ba04 DA |
365 | { |
366 | struct drm_device *dev = crtc->dev; | |
27641c3f | 367 | struct drm_display_mode *adjusted_mode, saved_mode, saved_hwmode; |
f453ba04 DA |
368 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
369 | struct drm_encoder_helper_funcs *encoder_funcs; | |
370 | int saved_x, saved_y; | |
371 | struct drm_encoder *encoder; | |
372 | bool ret = true; | |
373 | ||
f453ba04 | 374 | crtc->enabled = drm_helper_crtc_in_use(crtc); |
f453ba04 DA |
375 | if (!crtc->enabled) |
376 | return true; | |
377 | ||
021a8455 | 378 | adjusted_mode = drm_mode_duplicate(dev, mode); |
6bfc56aa VS |
379 | if (!adjusted_mode) |
380 | return false; | |
021a8455 | 381 | |
27641c3f | 382 | saved_hwmode = crtc->hwmode; |
f453ba04 DA |
383 | saved_mode = crtc->mode; |
384 | saved_x = crtc->x; | |
385 | saved_y = crtc->y; | |
386 | ||
387 | /* Update crtc values up front so the driver can rely on them for mode | |
388 | * setting. | |
389 | */ | |
390 | crtc->mode = *mode; | |
391 | crtc->x = x; | |
392 | crtc->y = y; | |
393 | ||
f453ba04 DA |
394 | /* Pass our mode to the connectors and the CRTC to give them a chance to |
395 | * adjust it according to limitations or connector properties, and also | |
396 | * a chance to reject the mode entirely. | |
397 | */ | |
398 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
399 | ||
400 | if (encoder->crtc != crtc) | |
401 | continue; | |
402 | encoder_funcs = encoder->helper_private; | |
403 | if (!(ret = encoder_funcs->mode_fixup(encoder, mode, | |
404 | adjusted_mode))) { | |
836e53d7 | 405 | DRM_DEBUG_KMS("Encoder fixup failed\n"); |
f453ba04 DA |
406 | goto done; |
407 | } | |
408 | } | |
409 | ||
410 | if (!(ret = crtc_funcs->mode_fixup(crtc, mode, adjusted_mode))) { | |
836e53d7 | 411 | DRM_DEBUG_KMS("CRTC fixup failed\n"); |
f453ba04 DA |
412 | goto done; |
413 | } | |
9440106b | 414 | DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id); |
f453ba04 DA |
415 | |
416 | /* Prepare the encoders and CRTCs before setting the mode. */ | |
417 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
418 | ||
419 | if (encoder->crtc != crtc) | |
420 | continue; | |
421 | encoder_funcs = encoder->helper_private; | |
422 | /* Disable the encoders as the first thing we do. */ | |
423 | encoder_funcs->prepare(encoder); | |
424 | } | |
425 | ||
7bec756c JB |
426 | drm_crtc_prepare_encoders(dev); |
427 | ||
f453ba04 DA |
428 | crtc_funcs->prepare(crtc); |
429 | ||
430 | /* Set up the DPLL and any encoders state that needs to adjust or depend | |
431 | * on the DPLL. | |
432 | */ | |
5c3b82e2 CW |
433 | ret = !crtc_funcs->mode_set(crtc, mode, adjusted_mode, x, y, old_fb); |
434 | if (!ret) | |
435 | goto done; | |
f453ba04 DA |
436 | |
437 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
438 | ||
439 | if (encoder->crtc != crtc) | |
440 | continue; | |
441 | ||
9440106b JG |
442 | DRM_DEBUG_KMS("[ENCODER:%d:%s] set [MODE:%d:%s]\n", |
443 | encoder->base.id, drm_get_encoder_name(encoder), | |
444 | mode->base.id, mode->name); | |
f453ba04 DA |
445 | encoder_funcs = encoder->helper_private; |
446 | encoder_funcs->mode_set(encoder, mode, adjusted_mode); | |
447 | } | |
448 | ||
449 | /* Now enable the clocks, plane, pipe, and connectors that we set up. */ | |
450 | crtc_funcs->commit(crtc); | |
451 | ||
452 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
453 | ||
454 | if (encoder->crtc != crtc) | |
455 | continue; | |
456 | ||
457 | encoder_funcs = encoder->helper_private; | |
458 | encoder_funcs->commit(encoder); | |
459 | ||
460 | } | |
461 | ||
27641c3f MK |
462 | /* Store real post-adjustment hardware mode. */ |
463 | crtc->hwmode = *adjusted_mode; | |
464 | ||
465 | /* Calculate and store various constants which | |
466 | * are later needed by vblank and swap-completion | |
467 | * timestamping. They are derived from true hwmode. | |
468 | */ | |
469 | drm_calc_timestamping_constants(crtc); | |
470 | ||
f453ba04 DA |
471 | /* FIXME: add subpixel order */ |
472 | done: | |
021a8455 | 473 | drm_mode_destroy(dev, adjusted_mode); |
f453ba04 | 474 | if (!ret) { |
27641c3f | 475 | crtc->hwmode = saved_hwmode; |
f453ba04 DA |
476 | crtc->mode = saved_mode; |
477 | crtc->x = saved_x; | |
478 | crtc->y = saved_y; | |
479 | } | |
480 | ||
481 | return ret; | |
482 | } | |
483 | EXPORT_SYMBOL(drm_crtc_helper_set_mode); | |
484 | ||
485 | ||
6eebd6bb CW |
486 | static int |
487 | drm_crtc_helper_disable(struct drm_crtc *crtc) | |
488 | { | |
489 | struct drm_device *dev = crtc->dev; | |
490 | struct drm_connector *connector; | |
491 | struct drm_encoder *encoder; | |
492 | ||
493 | /* Decouple all encoders and their attached connectors from this crtc */ | |
494 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
495 | if (encoder->crtc != crtc) | |
496 | continue; | |
497 | ||
498 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
499 | if (connector->encoder != encoder) | |
500 | continue; | |
501 | ||
502 | connector->encoder = NULL; | |
503 | } | |
504 | } | |
505 | ||
506 | drm_helper_disable_unused_functions(dev); | |
507 | return 0; | |
508 | } | |
509 | ||
f453ba04 DA |
510 | /** |
511 | * drm_crtc_helper_set_config - set a new config from userspace | |
512 | * @crtc: CRTC to setup | |
513 | * @crtc_info: user provided configuration | |
514 | * @new_mode: new mode to set | |
515 | * @connector_set: set of connectors for the new config | |
516 | * @fb: new framebuffer | |
517 | * | |
518 | * LOCKING: | |
519 | * Caller must hold mode config lock. | |
520 | * | |
521 | * Setup a new configuration, provided by the user in @crtc_info, and enable | |
522 | * it. | |
523 | * | |
524 | * RETURNS: | |
525 | * Zero. (FIXME) | |
526 | */ | |
527 | int drm_crtc_helper_set_config(struct drm_mode_set *set) | |
528 | { | |
529 | struct drm_device *dev; | |
e67aae79 MM |
530 | struct drm_crtc *save_crtcs, *new_crtc, *crtc; |
531 | struct drm_encoder *save_encoders, *new_encoder, *encoder; | |
7bec756c | 532 | struct drm_framebuffer *old_fb = NULL; |
4cb72b17 JB |
533 | bool mode_changed = false; /* if true do a full mode set */ |
534 | bool fb_changed = false; /* if true and !mode_changed just do a flip */ | |
e67aae79 | 535 | struct drm_connector *save_connectors, *connector; |
f453ba04 DA |
536 | int count = 0, ro, fail = 0; |
537 | struct drm_crtc_helper_funcs *crtc_funcs; | |
c5006cfe | 538 | struct drm_mode_set save_set; |
4a1b0714 | 539 | int ret; |
bf9dc102 | 540 | int i; |
f453ba04 | 541 | |
58367ed6 | 542 | DRM_DEBUG_KMS("\n"); |
f453ba04 DA |
543 | |
544 | if (!set) | |
545 | return -EINVAL; | |
546 | ||
547 | if (!set->crtc) | |
548 | return -EINVAL; | |
549 | ||
550 | if (!set->crtc->helper_private) | |
551 | return -EINVAL; | |
552 | ||
553 | crtc_funcs = set->crtc->helper_private; | |
554 | ||
ede3ff52 CW |
555 | if (!set->mode) |
556 | set->fb = NULL; | |
557 | ||
9440106b JG |
558 | if (set->fb) { |
559 | DRM_DEBUG_KMS("[CRTC:%d] [FB:%d] #connectors=%d (x y) (%i %i)\n", | |
560 | set->crtc->base.id, set->fb->base.id, | |
561 | (int)set->num_connectors, set->x, set->y); | |
562 | } else { | |
ede3ff52 | 563 | DRM_DEBUG_KMS("[CRTC:%d] [NOFB]\n", set->crtc->base.id); |
6eebd6bb | 564 | return drm_crtc_helper_disable(set->crtc); |
9440106b | 565 | } |
f453ba04 DA |
566 | |
567 | dev = set->crtc->dev; | |
568 | ||
e67aae79 MM |
569 | /* Allocate space for the backup of all (non-pointer) crtc, encoder and |
570 | * connector data. */ | |
571 | save_crtcs = kzalloc(dev->mode_config.num_crtc * | |
572 | sizeof(struct drm_crtc), GFP_KERNEL); | |
f453ba04 DA |
573 | if (!save_crtcs) |
574 | return -ENOMEM; | |
575 | ||
e67aae79 MM |
576 | save_encoders = kzalloc(dev->mode_config.num_encoder * |
577 | sizeof(struct drm_encoder), GFP_KERNEL); | |
f453ba04 DA |
578 | if (!save_encoders) { |
579 | kfree(save_crtcs); | |
580 | return -ENOMEM; | |
581 | } | |
582 | ||
e67aae79 MM |
583 | save_connectors = kzalloc(dev->mode_config.num_connector * |
584 | sizeof(struct drm_connector), GFP_KERNEL); | |
585 | if (!save_connectors) { | |
586 | kfree(save_crtcs); | |
587 | kfree(save_encoders); | |
588 | return -ENOMEM; | |
589 | } | |
590 | ||
591 | /* Copy data. Note that driver private data is not affected. | |
592 | * Should anything bad happen only the expected state is | |
593 | * restored, not the drivers personal bookkeeping. | |
594 | */ | |
595 | count = 0; | |
596 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
597 | save_crtcs[count++] = *crtc; | |
598 | } | |
599 | ||
600 | count = 0; | |
601 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
602 | save_encoders[count++] = *encoder; | |
603 | } | |
604 | ||
605 | count = 0; | |
606 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
607 | save_connectors[count++] = *connector; | |
608 | } | |
609 | ||
c5006cfe JB |
610 | save_set.crtc = set->crtc; |
611 | save_set.mode = &set->crtc->mode; | |
612 | save_set.x = set->crtc->x; | |
613 | save_set.y = set->crtc->y; | |
614 | save_set.fb = set->crtc->fb; | |
615 | ||
f453ba04 DA |
616 | /* We should be able to check here if the fb has the same properties |
617 | * and then just flip_or_move it */ | |
618 | if (set->crtc->fb != set->fb) { | |
712531bf | 619 | /* If we have no fb then treat it as a full mode set */ |
7bec756c | 620 | if (set->crtc->fb == NULL) { |
58367ed6 | 621 | DRM_DEBUG_KMS("crtc has no fb, full mode set\n"); |
712531bf | 622 | mode_changed = true; |
4cb72b17 JB |
623 | } else if (set->fb == NULL) { |
624 | mode_changed = true; | |
46e48456 JB |
625 | } else if (set->fb->depth != set->crtc->fb->depth) { |
626 | mode_changed = true; | |
627 | } else if (set->fb->bits_per_pixel != | |
628 | set->crtc->fb->bits_per_pixel) { | |
629 | mode_changed = true; | |
8dff4742 | 630 | } else |
712531bf | 631 | fb_changed = true; |
f453ba04 DA |
632 | } |
633 | ||
634 | if (set->x != set->crtc->x || set->y != set->crtc->y) | |
712531bf | 635 | fb_changed = true; |
f453ba04 DA |
636 | |
637 | if (set->mode && !drm_mode_equal(set->mode, &set->crtc->mode)) { | |
58367ed6 | 638 | DRM_DEBUG_KMS("modes are different, full mode set\n"); |
f453ba04 DA |
639 | drm_mode_debug_printmodeline(&set->crtc->mode); |
640 | drm_mode_debug_printmodeline(set->mode); | |
712531bf | 641 | mode_changed = true; |
f453ba04 DA |
642 | } |
643 | ||
644 | /* a) traverse passed in connector list and get encoders for them */ | |
645 | count = 0; | |
646 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
647 | struct drm_connector_helper_funcs *connector_funcs = | |
648 | connector->helper_private; | |
f453ba04 DA |
649 | new_encoder = connector->encoder; |
650 | for (ro = 0; ro < set->num_connectors; ro++) { | |
651 | if (set->connectors[ro] == connector) { | |
652 | new_encoder = connector_funcs->best_encoder(connector); | |
653 | /* if we can't get an encoder for a connector | |
654 | we are setting now - then fail */ | |
655 | if (new_encoder == NULL) | |
656 | /* don't break so fail path works correct */ | |
657 | fail = 1; | |
658 | break; | |
659 | } | |
660 | } | |
661 | ||
662 | if (new_encoder != connector->encoder) { | |
58367ed6 | 663 | DRM_DEBUG_KMS("encoder changed, full mode switch\n"); |
712531bf | 664 | mode_changed = true; |
ff846ab7 MM |
665 | /* If the encoder is reused for another connector, then |
666 | * the appropriate crtc will be set later. | |
667 | */ | |
ff6fdbed MM |
668 | if (connector->encoder) |
669 | connector->encoder->crtc = NULL; | |
f453ba04 DA |
670 | connector->encoder = new_encoder; |
671 | } | |
672 | } | |
673 | ||
674 | if (fail) { | |
675 | ret = -EINVAL; | |
e67aae79 | 676 | goto fail; |
f453ba04 DA |
677 | } |
678 | ||
679 | count = 0; | |
680 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
681 | if (!connector->encoder) | |
682 | continue; | |
683 | ||
f453ba04 DA |
684 | if (connector->encoder->crtc == set->crtc) |
685 | new_crtc = NULL; | |
686 | else | |
687 | new_crtc = connector->encoder->crtc; | |
688 | ||
689 | for (ro = 0; ro < set->num_connectors; ro++) { | |
690 | if (set->connectors[ro] == connector) | |
691 | new_crtc = set->crtc; | |
692 | } | |
7bec756c JB |
693 | |
694 | /* Make sure the new CRTC will work with the encoder */ | |
695 | if (new_crtc && | |
696 | !drm_encoder_crtc_ok(connector->encoder, new_crtc)) { | |
697 | ret = -EINVAL; | |
e67aae79 | 698 | goto fail; |
7bec756c | 699 | } |
f453ba04 | 700 | if (new_crtc != connector->encoder->crtc) { |
58367ed6 | 701 | DRM_DEBUG_KMS("crtc changed, full mode switch\n"); |
712531bf | 702 | mode_changed = true; |
f453ba04 DA |
703 | connector->encoder->crtc = new_crtc; |
704 | } | |
9440106b JG |
705 | if (new_crtc) { |
706 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] to [CRTC:%d]\n", | |
707 | connector->base.id, drm_get_connector_name(connector), | |
708 | new_crtc->base.id); | |
709 | } else { | |
710 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] to [NOCRTC]\n", | |
711 | connector->base.id, drm_get_connector_name(connector)); | |
712 | } | |
f453ba04 DA |
713 | } |
714 | ||
715 | /* mode_set_base is not a required function */ | |
712531bf JB |
716 | if (fb_changed && !crtc_funcs->mode_set_base) |
717 | mode_changed = true; | |
f453ba04 | 718 | |
712531bf | 719 | if (mode_changed) { |
9334ef75 CW |
720 | set->crtc->enabled = drm_helper_crtc_in_use(set->crtc); |
721 | if (set->crtc->enabled) { | |
58367ed6 ZY |
722 | DRM_DEBUG_KMS("attempting to set mode from" |
723 | " userspace\n"); | |
f453ba04 | 724 | drm_mode_debug_printmodeline(set->mode); |
356ad3cd CW |
725 | old_fb = set->crtc->fb; |
726 | set->crtc->fb = set->fb; | |
f453ba04 | 727 | if (!drm_crtc_helper_set_mode(set->crtc, set->mode, |
3c4fdcfb KH |
728 | set->x, set->y, |
729 | old_fb)) { | |
9440106b JG |
730 | DRM_ERROR("failed to set mode on [CRTC:%d]\n", |
731 | set->crtc->base.id); | |
0ba41e44 | 732 | set->crtc->fb = old_fb; |
f453ba04 | 733 | ret = -EINVAL; |
e67aae79 | 734 | goto fail; |
f453ba04 | 735 | } |
811aaa55 KP |
736 | DRM_DEBUG_KMS("Setting connector DPMS state to on\n"); |
737 | for (i = 0; i < set->num_connectors; i++) { | |
738 | DRM_DEBUG_KMS("\t[CONNECTOR:%d:%s] set DPMS on\n", set->connectors[i]->base.id, | |
739 | drm_get_connector_name(set->connectors[i])); | |
c7548837 | 740 | set->connectors[i]->funcs->dpms(set->connectors[i], DRM_MODE_DPMS_ON); |
811aaa55 | 741 | } |
f453ba04 DA |
742 | } |
743 | drm_helper_disable_unused_functions(dev); | |
712531bf | 744 | } else if (fb_changed) { |
9b1596af BS |
745 | set->crtc->x = set->x; |
746 | set->crtc->y = set->y; | |
747 | ||
3c4fdcfb | 748 | old_fb = set->crtc->fb; |
f453ba04 DA |
749 | if (set->crtc->fb != set->fb) |
750 | set->crtc->fb = set->fb; | |
5c3b82e2 CW |
751 | ret = crtc_funcs->mode_set_base(set->crtc, |
752 | set->x, set->y, old_fb); | |
0ba41e44 CW |
753 | if (ret != 0) { |
754 | set->crtc->fb = old_fb; | |
e67aae79 | 755 | goto fail; |
0ba41e44 | 756 | } |
f453ba04 DA |
757 | } |
758 | ||
e67aae79 | 759 | kfree(save_connectors); |
f453ba04 DA |
760 | kfree(save_encoders); |
761 | kfree(save_crtcs); | |
762 | return 0; | |
763 | ||
e67aae79 MM |
764 | fail: |
765 | /* Restore all previous data. */ | |
f453ba04 | 766 | count = 0; |
e67aae79 MM |
767 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
768 | *crtc = save_crtcs[count++]; | |
769 | } | |
e62fb64e | 770 | |
e67aae79 MM |
771 | count = 0; |
772 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
773 | *encoder = save_encoders[count++]; | |
e62fb64e | 774 | } |
e67aae79 | 775 | |
f453ba04 DA |
776 | count = 0; |
777 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
e67aae79 | 778 | *connector = save_connectors[count++]; |
f453ba04 | 779 | } |
e67aae79 | 780 | |
c5006cfe JB |
781 | /* Try to restore the config */ |
782 | if (mode_changed && | |
783 | !drm_crtc_helper_set_mode(save_set.crtc, save_set.mode, save_set.x, | |
784 | save_set.y, save_set.fb)) | |
785 | DRM_ERROR("failed to restore config after modeset failure\n"); | |
786 | ||
e67aae79 | 787 | kfree(save_connectors); |
f453ba04 | 788 | kfree(save_encoders); |
e67aae79 | 789 | kfree(save_crtcs); |
f453ba04 DA |
790 | return ret; |
791 | } | |
792 | EXPORT_SYMBOL(drm_crtc_helper_set_config); | |
793 | ||
c9fb15f6 KP |
794 | static int drm_helper_choose_encoder_dpms(struct drm_encoder *encoder) |
795 | { | |
796 | int dpms = DRM_MODE_DPMS_OFF; | |
797 | struct drm_connector *connector; | |
798 | struct drm_device *dev = encoder->dev; | |
799 | ||
800 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) | |
801 | if (connector->encoder == encoder) | |
802 | if (connector->dpms < dpms) | |
803 | dpms = connector->dpms; | |
804 | return dpms; | |
805 | } | |
806 | ||
807 | static int drm_helper_choose_crtc_dpms(struct drm_crtc *crtc) | |
808 | { | |
809 | int dpms = DRM_MODE_DPMS_OFF; | |
810 | struct drm_connector *connector; | |
811 | struct drm_device *dev = crtc->dev; | |
812 | ||
813 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) | |
814 | if (connector->encoder && connector->encoder->crtc == crtc) | |
815 | if (connector->dpms < dpms) | |
816 | dpms = connector->dpms; | |
817 | return dpms; | |
818 | } | |
819 | ||
820 | /** | |
821 | * drm_helper_connector_dpms | |
822 | * @connector affected connector | |
823 | * @mode DPMS mode | |
824 | * | |
825 | * Calls the low-level connector DPMS function, then | |
826 | * calls appropriate encoder and crtc DPMS functions as well | |
827 | */ | |
828 | void drm_helper_connector_dpms(struct drm_connector *connector, int mode) | |
829 | { | |
830 | struct drm_encoder *encoder = connector->encoder; | |
831 | struct drm_crtc *crtc = encoder ? encoder->crtc : NULL; | |
832 | int old_dpms; | |
833 | ||
834 | if (mode == connector->dpms) | |
835 | return; | |
836 | ||
837 | old_dpms = connector->dpms; | |
838 | connector->dpms = mode; | |
839 | ||
840 | /* from off to on, do crtc then encoder */ | |
841 | if (mode < old_dpms) { | |
842 | if (crtc) { | |
843 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; | |
844 | if (crtc_funcs->dpms) | |
845 | (*crtc_funcs->dpms) (crtc, | |
846 | drm_helper_choose_crtc_dpms(crtc)); | |
847 | } | |
848 | if (encoder) { | |
849 | struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; | |
850 | if (encoder_funcs->dpms) | |
851 | (*encoder_funcs->dpms) (encoder, | |
852 | drm_helper_choose_encoder_dpms(encoder)); | |
853 | } | |
854 | } | |
855 | ||
856 | /* from on to off, do encoder then crtc */ | |
857 | if (mode > old_dpms) { | |
858 | if (encoder) { | |
859 | struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; | |
860 | if (encoder_funcs->dpms) | |
861 | (*encoder_funcs->dpms) (encoder, | |
862 | drm_helper_choose_encoder_dpms(encoder)); | |
863 | } | |
864 | if (crtc) { | |
865 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; | |
866 | if (crtc_funcs->dpms) | |
867 | (*crtc_funcs->dpms) (crtc, | |
868 | drm_helper_choose_crtc_dpms(crtc)); | |
869 | } | |
870 | } | |
871 | ||
872 | return; | |
873 | } | |
874 | EXPORT_SYMBOL(drm_helper_connector_dpms); | |
875 | ||
f453ba04 | 876 | int drm_helper_mode_fill_fb_struct(struct drm_framebuffer *fb, |
308e5bcb | 877 | struct drm_mode_fb_cmd2 *mode_cmd) |
f453ba04 | 878 | { |
01f2c773 VS |
879 | int i; |
880 | ||
f453ba04 DA |
881 | fb->width = mode_cmd->width; |
882 | fb->height = mode_cmd->height; | |
01f2c773 VS |
883 | for (i = 0; i < 4; i++) { |
884 | fb->pitches[i] = mode_cmd->pitches[i]; | |
885 | fb->offsets[i] = mode_cmd->offsets[i]; | |
886 | } | |
248dbc23 | 887 | drm_fb_get_bpp_depth(mode_cmd->pixel_format, &fb->depth, |
308e5bcb JB |
888 | &fb->bits_per_pixel); |
889 | fb->pixel_format = mode_cmd->pixel_format; | |
f453ba04 DA |
890 | |
891 | return 0; | |
892 | } | |
893 | EXPORT_SYMBOL(drm_helper_mode_fill_fb_struct); | |
894 | ||
895 | int drm_helper_resume_force_mode(struct drm_device *dev) | |
896 | { | |
897 | struct drm_crtc *crtc; | |
89347bb8 DJ |
898 | struct drm_encoder *encoder; |
899 | struct drm_encoder_helper_funcs *encoder_funcs; | |
900 | struct drm_crtc_helper_funcs *crtc_funcs; | |
f453ba04 DA |
901 | int ret; |
902 | ||
903 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
904 | ||
905 | if (!crtc->enabled) | |
906 | continue; | |
907 | ||
3c4fdcfb KH |
908 | ret = drm_crtc_helper_set_mode(crtc, &crtc->mode, |
909 | crtc->x, crtc->y, crtc->fb); | |
f453ba04 DA |
910 | |
911 | if (ret == false) | |
912 | DRM_ERROR("failed to set mode on crtc %p\n", crtc); | |
89347bb8 DJ |
913 | |
914 | /* Turn off outputs that were already powered off */ | |
915 | if (drm_helper_choose_crtc_dpms(crtc)) { | |
916 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
917 | ||
918 | if(encoder->crtc != crtc) | |
919 | continue; | |
920 | ||
921 | encoder_funcs = encoder->helper_private; | |
922 | if (encoder_funcs->dpms) | |
923 | (*encoder_funcs->dpms) (encoder, | |
924 | drm_helper_choose_encoder_dpms(encoder)); | |
89347bb8 | 925 | } |
817e631e CW |
926 | |
927 | crtc_funcs = crtc->helper_private; | |
928 | if (crtc_funcs->dpms) | |
929 | (*crtc_funcs->dpms) (crtc, | |
930 | drm_helper_choose_crtc_dpms(crtc)); | |
89347bb8 | 931 | } |
f453ba04 | 932 | } |
af4fcb57 ZY |
933 | /* disable the unused connectors while restoring the modesetting */ |
934 | drm_helper_disable_unused_functions(dev); | |
f453ba04 DA |
935 | return 0; |
936 | } | |
937 | EXPORT_SYMBOL(drm_helper_resume_force_mode); | |
eb1f8e4f | 938 | |
3d3683f0 DV |
939 | void drm_kms_helper_hotplug_event(struct drm_device *dev) |
940 | { | |
941 | /* send a uevent + call fbdev */ | |
942 | drm_sysfs_hotplug_event(dev); | |
943 | if (dev->mode_config.funcs->output_poll_changed) | |
944 | dev->mode_config.funcs->output_poll_changed(dev); | |
945 | } | |
946 | EXPORT_SYMBOL(drm_kms_helper_hotplug_event); | |
947 | ||
eb1f8e4f | 948 | #define DRM_OUTPUT_POLL_PERIOD (10*HZ) |
991ea75c | 949 | static void output_poll_execute(struct work_struct *work) |
eb1f8e4f | 950 | { |
991ea75c TH |
951 | struct delayed_work *delayed_work = to_delayed_work(work); |
952 | struct drm_device *dev = container_of(delayed_work, struct drm_device, mode_config.output_poll_work); | |
eb1f8e4f | 953 | struct drm_connector *connector; |
c5027dec | 954 | enum drm_connector_status old_status; |
eb1f8e4f | 955 | bool repoll = false, changed = false; |
eb1f8e4f | 956 | |
e58f637b CW |
957 | if (!drm_kms_helper_poll) |
958 | return; | |
959 | ||
eb1f8e4f DA |
960 | mutex_lock(&dev->mode_config.mutex); |
961 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
962 | ||
963 | /* if this is HPD or polled don't check it - | |
964 | TV out for instance */ | |
965 | if (!connector->polled) | |
966 | continue; | |
967 | ||
968 | else if (connector->polled & (DRM_CONNECTOR_POLL_CONNECT | DRM_CONNECTOR_POLL_DISCONNECT)) | |
969 | repoll = true; | |
970 | ||
971 | old_status = connector->status; | |
972 | /* if we are connected and don't want to poll for disconnect | |
973 | skip it */ | |
974 | if (old_status == connector_status_connected && | |
975 | !(connector->polled & DRM_CONNECTOR_POLL_DISCONNECT) && | |
976 | !(connector->polled & DRM_CONNECTOR_POLL_HPD)) | |
977 | continue; | |
978 | ||
c5027dec | 979 | connector->status = connector->funcs->detect(connector, false); |
0f16830e CW |
980 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] status updated from %d to %d\n", |
981 | connector->base.id, | |
982 | drm_get_connector_name(connector), | |
983 | old_status, connector->status); | |
c5027dec | 984 | if (old_status != connector->status) |
eb1f8e4f DA |
985 | changed = true; |
986 | } | |
987 | ||
988 | mutex_unlock(&dev->mode_config.mutex); | |
989 | ||
3d3683f0 DV |
990 | if (changed) |
991 | drm_kms_helper_hotplug_event(dev); | |
eb1f8e4f | 992 | |
9a919c46 | 993 | if (repoll) |
3b07e9ca | 994 | schedule_delayed_work(delayed_work, DRM_OUTPUT_POLL_PERIOD); |
eb1f8e4f DA |
995 | } |
996 | ||
fbf81762 DA |
997 | void drm_kms_helper_poll_disable(struct drm_device *dev) |
998 | { | |
999 | if (!dev->mode_config.poll_enabled) | |
1000 | return; | |
991ea75c | 1001 | cancel_delayed_work_sync(&dev->mode_config.output_poll_work); |
fbf81762 DA |
1002 | } |
1003 | EXPORT_SYMBOL(drm_kms_helper_poll_disable); | |
1004 | ||
1005 | void drm_kms_helper_poll_enable(struct drm_device *dev) | |
eb1f8e4f | 1006 | { |
eb1f8e4f | 1007 | bool poll = false; |
fbf81762 | 1008 | struct drm_connector *connector; |
eb1f8e4f | 1009 | |
e58f637b CW |
1010 | if (!dev->mode_config.poll_enabled || !drm_kms_helper_poll) |
1011 | return; | |
1012 | ||
eb1f8e4f DA |
1013 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
1014 | if (connector->polled) | |
1015 | poll = true; | |
1016 | } | |
eb1f8e4f | 1017 | |
9a919c46 | 1018 | if (poll) |
3b07e9ca | 1019 | schedule_delayed_work(&dev->mode_config.output_poll_work, DRM_OUTPUT_POLL_PERIOD); |
eb1f8e4f | 1020 | } |
fbf81762 DA |
1021 | EXPORT_SYMBOL(drm_kms_helper_poll_enable); |
1022 | ||
1023 | void drm_kms_helper_poll_init(struct drm_device *dev) | |
1024 | { | |
991ea75c | 1025 | INIT_DELAYED_WORK(&dev->mode_config.output_poll_work, output_poll_execute); |
fbf81762 DA |
1026 | dev->mode_config.poll_enabled = true; |
1027 | ||
1028 | drm_kms_helper_poll_enable(dev); | |
1029 | } | |
eb1f8e4f DA |
1030 | EXPORT_SYMBOL(drm_kms_helper_poll_init); |
1031 | ||
1032 | void drm_kms_helper_poll_fini(struct drm_device *dev) | |
1033 | { | |
fbf81762 | 1034 | drm_kms_helper_poll_disable(dev); |
eb1f8e4f DA |
1035 | } |
1036 | EXPORT_SYMBOL(drm_kms_helper_poll_fini); | |
1037 | ||
1038 | void drm_helper_hpd_irq_event(struct drm_device *dev) | |
1039 | { | |
1040 | if (!dev->mode_config.poll_enabled) | |
1041 | return; | |
e58f637b | 1042 | |
991ea75c TH |
1043 | /* kill timer and schedule immediate execution, this doesn't block */ |
1044 | cancel_delayed_work(&dev->mode_config.output_poll_work); | |
e58f637b | 1045 | if (drm_kms_helper_poll) |
3b07e9ca | 1046 | schedule_delayed_work(&dev->mode_config.output_poll_work, 0); |
eb1f8e4f DA |
1047 | } |
1048 | EXPORT_SYMBOL(drm_helper_hpd_irq_event); |