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 | |
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); |
e58f637b | 130 | } |
f453ba04 | 131 | |
905bc9ff DV |
132 | /* Re-enable polling in case the global poll config changed. */ |
133 | if (drm_kms_helper_poll != dev->mode_config.poll_running) | |
134 | drm_kms_helper_poll_enable(dev); | |
135 | ||
136 | dev->mode_config.poll_running = drm_kms_helper_poll; | |
137 | ||
f453ba04 | 138 | if (connector->status == connector_status_disconnected) { |
9440106b JG |
139 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] disconnected\n", |
140 | connector->base.id, drm_get_connector_name(connector)); | |
72539832 | 141 | drm_mode_connector_update_edid_property(connector, NULL); |
620f3781 | 142 | goto prune; |
f453ba04 DA |
143 | } |
144 | ||
da0df92b CE |
145 | #ifdef CONFIG_DRM_LOAD_EDID_FIRMWARE |
146 | count = drm_load_edid_firmware(connector); | |
147 | if (count == 0) | |
148 | #endif | |
149 | count = (*connector_funcs->get_modes)(connector); | |
150 | ||
c7ef35a9 | 151 | if (count == 0 && connector->status == connector_status_connected) |
9632b41f | 152 | count = drm_add_modes_noedid(connector, 1024, 768); |
c7ef35a9 CW |
153 | if (count == 0) |
154 | goto prune; | |
f453ba04 | 155 | |
40a518d9 | 156 | drm_mode_connector_list_update(connector); |
f453ba04 DA |
157 | |
158 | if (maxX && maxY) | |
159 | drm_mode_validate_size(dev, &connector->modes, maxX, | |
160 | maxY, 0); | |
6714977b | 161 | |
162 | if (connector->interlace_allowed) | |
163 | mode_flags |= DRM_MODE_FLAG_INTERLACE; | |
164 | if (connector->doublescan_allowed) | |
165 | mode_flags |= DRM_MODE_FLAG_DBLSCAN; | |
166 | drm_mode_validate_flag(connector, mode_flags); | |
167 | ||
a1178ca0 | 168 | list_for_each_entry(mode, &connector->modes, head) { |
f453ba04 DA |
169 | if (mode->status == MODE_OK) |
170 | mode->status = connector_funcs->mode_valid(connector, | |
171 | mode); | |
172 | } | |
173 | ||
620f3781 | 174 | prune: |
f453ba04 DA |
175 | drm_mode_prune_invalid(dev, &connector->modes, true); |
176 | ||
40a518d9 JB |
177 | if (list_empty(&connector->modes)) |
178 | return 0; | |
f453ba04 DA |
179 | |
180 | drm_mode_sort(&connector->modes); | |
181 | ||
9440106b JG |
182 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] probed modes :\n", connector->base.id, |
183 | drm_get_connector_name(connector)); | |
a1178ca0 | 184 | list_for_each_entry(mode, &connector->modes, head) { |
f453ba04 DA |
185 | mode->vrefresh = drm_mode_vrefresh(mode); |
186 | ||
187 | drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V); | |
188 | drm_mode_debug_printmodeline(mode); | |
189 | } | |
40a518d9 JB |
190 | |
191 | return count; | |
f453ba04 DA |
192 | } |
193 | EXPORT_SYMBOL(drm_helper_probe_single_connector_modes); | |
194 | ||
c9fb15f6 KP |
195 | /** |
196 | * drm_helper_encoder_in_use - check if a given encoder is in use | |
197 | * @encoder: encoder to check | |
198 | * | |
199 | * LOCKING: | |
200 | * Caller must hold mode config lock. | |
201 | * | |
202 | * Walk @encoders's DRM device's mode_config and see if it's in use. | |
203 | * | |
204 | * RETURNS: | |
205 | * True if @encoder is part of the mode_config, false otherwise. | |
206 | */ | |
207 | bool drm_helper_encoder_in_use(struct drm_encoder *encoder) | |
208 | { | |
209 | struct drm_connector *connector; | |
210 | struct drm_device *dev = encoder->dev; | |
211 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) | |
212 | if (connector->encoder == encoder) | |
213 | return true; | |
214 | return false; | |
215 | } | |
216 | EXPORT_SYMBOL(drm_helper_encoder_in_use); | |
217 | ||
f453ba04 DA |
218 | /** |
219 | * drm_helper_crtc_in_use - check if a given CRTC is in a mode_config | |
220 | * @crtc: CRTC to check | |
221 | * | |
222 | * LOCKING: | |
223 | * Caller must hold mode config lock. | |
224 | * | |
225 | * Walk @crtc's DRM device's mode_config and see if it's in use. | |
226 | * | |
227 | * RETURNS: | |
228 | * True if @crtc is part of the mode_config, false otherwise. | |
229 | */ | |
230 | bool drm_helper_crtc_in_use(struct drm_crtc *crtc) | |
231 | { | |
232 | struct drm_encoder *encoder; | |
233 | struct drm_device *dev = crtc->dev; | |
234 | /* FIXME: Locking around list access? */ | |
235 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) | |
c9fb15f6 | 236 | if (encoder->crtc == crtc && drm_helper_encoder_in_use(encoder)) |
f453ba04 DA |
237 | return true; |
238 | return false; | |
239 | } | |
240 | EXPORT_SYMBOL(drm_helper_crtc_in_use); | |
241 | ||
86a1b9d1 BS |
242 | static void |
243 | drm_encoder_disable(struct drm_encoder *encoder) | |
244 | { | |
245 | struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; | |
246 | ||
247 | if (encoder_funcs->disable) | |
248 | (*encoder_funcs->disable)(encoder); | |
249 | else | |
250 | (*encoder_funcs->dpms)(encoder, DRM_MODE_DPMS_OFF); | |
251 | } | |
252 | ||
f453ba04 | 253 | /** |
89347bb8 | 254 | * drm_helper_disable_unused_functions - disable unused objects |
f453ba04 DA |
255 | * @dev: DRM device |
256 | * | |
257 | * LOCKING: | |
258 | * Caller must hold mode config lock. | |
259 | * | |
260 | * If an connector or CRTC isn't part of @dev's mode_config, it can be disabled | |
261 | * by calling its dpms function, which should power it off. | |
262 | */ | |
263 | void drm_helper_disable_unused_functions(struct drm_device *dev) | |
264 | { | |
265 | struct drm_encoder *encoder; | |
a3a0544b | 266 | struct drm_connector *connector; |
f453ba04 DA |
267 | struct drm_crtc *crtc; |
268 | ||
a3a0544b DA |
269 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
270 | if (!connector->encoder) | |
271 | continue; | |
272 | if (connector->status == connector_status_disconnected) | |
273 | connector->encoder = NULL; | |
274 | } | |
275 | ||
f453ba04 | 276 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
92971021 | 277 | if (!drm_helper_encoder_in_use(encoder)) { |
86a1b9d1 | 278 | drm_encoder_disable(encoder); |
9c552dd7 DA |
279 | /* disconnector encoder from any connector */ |
280 | encoder->crtc = NULL; | |
a3a0544b | 281 | } |
f453ba04 DA |
282 | } |
283 | ||
284 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
285 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; | |
286 | crtc->enabled = drm_helper_crtc_in_use(crtc); | |
287 | if (!crtc->enabled) { | |
5c8d7171 AD |
288 | if (crtc_funcs->disable) |
289 | (*crtc_funcs->disable)(crtc); | |
290 | else | |
291 | (*crtc_funcs->dpms)(crtc, DRM_MODE_DPMS_OFF); | |
f453ba04 DA |
292 | crtc->fb = NULL; |
293 | } | |
294 | } | |
295 | } | |
296 | EXPORT_SYMBOL(drm_helper_disable_unused_functions); | |
297 | ||
7bec756c JB |
298 | /** |
299 | * drm_encoder_crtc_ok - can a given crtc drive a given encoder? | |
300 | * @encoder: encoder to test | |
301 | * @crtc: crtc to test | |
302 | * | |
303 | * Return false if @encoder can't be driven by @crtc, true otherwise. | |
304 | */ | |
305 | static bool drm_encoder_crtc_ok(struct drm_encoder *encoder, | |
306 | struct drm_crtc *crtc) | |
307 | { | |
308 | struct drm_device *dev; | |
309 | struct drm_crtc *tmp; | |
310 | int crtc_mask = 1; | |
311 | ||
fce7d61b | 312 | WARN(!crtc, "checking null crtc?\n"); |
7bec756c JB |
313 | |
314 | dev = crtc->dev; | |
315 | ||
316 | list_for_each_entry(tmp, &dev->mode_config.crtc_list, head) { | |
317 | if (tmp == crtc) | |
318 | break; | |
319 | crtc_mask <<= 1; | |
320 | } | |
321 | ||
322 | if (encoder->possible_crtcs & crtc_mask) | |
323 | return true; | |
324 | return false; | |
325 | } | |
326 | ||
327 | /* | |
328 | * Check the CRTC we're going to map each output to vs. its current | |
329 | * CRTC. If they don't match, we have to disable the output and the CRTC | |
330 | * since the driver will have to re-route things. | |
331 | */ | |
332 | static void | |
333 | drm_crtc_prepare_encoders(struct drm_device *dev) | |
334 | { | |
335 | struct drm_encoder_helper_funcs *encoder_funcs; | |
336 | struct drm_encoder *encoder; | |
337 | ||
338 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
339 | encoder_funcs = encoder->helper_private; | |
340 | /* Disable unused encoders */ | |
341 | if (encoder->crtc == NULL) | |
86a1b9d1 | 342 | drm_encoder_disable(encoder); |
7bec756c JB |
343 | /* Disable encoders whose CRTC is about to change */ |
344 | if (encoder_funcs->get_crtc && | |
345 | encoder->crtc != (*encoder_funcs->get_crtc)(encoder)) | |
86a1b9d1 | 346 | drm_encoder_disable(encoder); |
7bec756c JB |
347 | } |
348 | } | |
349 | ||
f453ba04 DA |
350 | /** |
351 | * drm_crtc_set_mode - set a mode | |
352 | * @crtc: CRTC to program | |
353 | * @mode: mode to use | |
4c9287c6 AD |
354 | * @x: horizontal offset into the surface |
355 | * @y: vertical offset into the surface | |
f453ba04 DA |
356 | * |
357 | * LOCKING: | |
358 | * Caller must hold mode config lock. | |
359 | * | |
360 | * Try to set @mode on @crtc. Give @crtc and its associated connectors a chance | |
361 | * to fixup or reject the mode prior to trying to set it. | |
362 | * | |
363 | * RETURNS: | |
364 | * True if the mode was set successfully, or false otherwise. | |
365 | */ | |
366 | bool drm_crtc_helper_set_mode(struct drm_crtc *crtc, | |
367 | struct drm_display_mode *mode, | |
3c4fdcfb KH |
368 | int x, int y, |
369 | struct drm_framebuffer *old_fb) | |
f453ba04 DA |
370 | { |
371 | struct drm_device *dev = crtc->dev; | |
27641c3f | 372 | struct drm_display_mode *adjusted_mode, saved_mode, saved_hwmode; |
f453ba04 DA |
373 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
374 | struct drm_encoder_helper_funcs *encoder_funcs; | |
375 | int saved_x, saved_y; | |
376 | struct drm_encoder *encoder; | |
377 | bool ret = true; | |
378 | ||
f453ba04 | 379 | crtc->enabled = drm_helper_crtc_in_use(crtc); |
f453ba04 DA |
380 | if (!crtc->enabled) |
381 | return true; | |
382 | ||
021a8455 | 383 | adjusted_mode = drm_mode_duplicate(dev, mode); |
6bfc56aa VS |
384 | if (!adjusted_mode) |
385 | return false; | |
021a8455 | 386 | |
27641c3f | 387 | saved_hwmode = crtc->hwmode; |
f453ba04 DA |
388 | saved_mode = crtc->mode; |
389 | saved_x = crtc->x; | |
390 | saved_y = crtc->y; | |
391 | ||
392 | /* Update crtc values up front so the driver can rely on them for mode | |
393 | * setting. | |
394 | */ | |
395 | crtc->mode = *mode; | |
396 | crtc->x = x; | |
397 | crtc->y = y; | |
398 | ||
f453ba04 DA |
399 | /* Pass our mode to the connectors and the CRTC to give them a chance to |
400 | * adjust it according to limitations or connector properties, and also | |
401 | * a chance to reject the mode entirely. | |
402 | */ | |
403 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
404 | ||
405 | if (encoder->crtc != crtc) | |
406 | continue; | |
407 | encoder_funcs = encoder->helper_private; | |
408 | if (!(ret = encoder_funcs->mode_fixup(encoder, mode, | |
409 | adjusted_mode))) { | |
836e53d7 | 410 | DRM_DEBUG_KMS("Encoder fixup failed\n"); |
f453ba04 DA |
411 | goto done; |
412 | } | |
413 | } | |
414 | ||
415 | if (!(ret = crtc_funcs->mode_fixup(crtc, mode, adjusted_mode))) { | |
836e53d7 | 416 | DRM_DEBUG_KMS("CRTC fixup failed\n"); |
f453ba04 DA |
417 | goto done; |
418 | } | |
9440106b | 419 | DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id); |
f453ba04 DA |
420 | |
421 | /* Prepare the encoders and CRTCs before setting the mode. */ | |
422 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
423 | ||
424 | if (encoder->crtc != crtc) | |
425 | continue; | |
426 | encoder_funcs = encoder->helper_private; | |
427 | /* Disable the encoders as the first thing we do. */ | |
428 | encoder_funcs->prepare(encoder); | |
429 | } | |
430 | ||
7bec756c JB |
431 | drm_crtc_prepare_encoders(dev); |
432 | ||
f453ba04 DA |
433 | crtc_funcs->prepare(crtc); |
434 | ||
435 | /* Set up the DPLL and any encoders state that needs to adjust or depend | |
436 | * on the DPLL. | |
437 | */ | |
5c3b82e2 CW |
438 | ret = !crtc_funcs->mode_set(crtc, mode, adjusted_mode, x, y, old_fb); |
439 | if (!ret) | |
440 | goto done; | |
f453ba04 DA |
441 | |
442 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
443 | ||
444 | if (encoder->crtc != crtc) | |
445 | continue; | |
446 | ||
9440106b JG |
447 | DRM_DEBUG_KMS("[ENCODER:%d:%s] set [MODE:%d:%s]\n", |
448 | encoder->base.id, drm_get_encoder_name(encoder), | |
449 | mode->base.id, mode->name); | |
f453ba04 DA |
450 | encoder_funcs = encoder->helper_private; |
451 | encoder_funcs->mode_set(encoder, mode, adjusted_mode); | |
452 | } | |
453 | ||
454 | /* Now enable the clocks, plane, pipe, and connectors that we set up. */ | |
455 | crtc_funcs->commit(crtc); | |
456 | ||
457 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
458 | ||
459 | if (encoder->crtc != crtc) | |
460 | continue; | |
461 | ||
462 | encoder_funcs = encoder->helper_private; | |
463 | encoder_funcs->commit(encoder); | |
464 | ||
465 | } | |
466 | ||
27641c3f MK |
467 | /* Store real post-adjustment hardware mode. */ |
468 | crtc->hwmode = *adjusted_mode; | |
469 | ||
470 | /* Calculate and store various constants which | |
471 | * are later needed by vblank and swap-completion | |
472 | * timestamping. They are derived from true hwmode. | |
473 | */ | |
474 | drm_calc_timestamping_constants(crtc); | |
475 | ||
f453ba04 DA |
476 | /* FIXME: add subpixel order */ |
477 | done: | |
021a8455 | 478 | drm_mode_destroy(dev, adjusted_mode); |
f453ba04 | 479 | if (!ret) { |
27641c3f | 480 | crtc->hwmode = saved_hwmode; |
f453ba04 DA |
481 | crtc->mode = saved_mode; |
482 | crtc->x = saved_x; | |
483 | crtc->y = saved_y; | |
484 | } | |
485 | ||
486 | return ret; | |
487 | } | |
488 | EXPORT_SYMBOL(drm_crtc_helper_set_mode); | |
489 | ||
490 | ||
6eebd6bb CW |
491 | static int |
492 | drm_crtc_helper_disable(struct drm_crtc *crtc) | |
493 | { | |
494 | struct drm_device *dev = crtc->dev; | |
495 | struct drm_connector *connector; | |
496 | struct drm_encoder *encoder; | |
497 | ||
498 | /* Decouple all encoders and their attached connectors from this crtc */ | |
499 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
500 | if (encoder->crtc != crtc) | |
501 | continue; | |
502 | ||
503 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
504 | if (connector->encoder != encoder) | |
505 | continue; | |
506 | ||
507 | connector->encoder = NULL; | |
508 | } | |
509 | } | |
510 | ||
511 | drm_helper_disable_unused_functions(dev); | |
512 | return 0; | |
513 | } | |
514 | ||
f453ba04 DA |
515 | /** |
516 | * drm_crtc_helper_set_config - set a new config from userspace | |
517 | * @crtc: CRTC to setup | |
518 | * @crtc_info: user provided configuration | |
519 | * @new_mode: new mode to set | |
520 | * @connector_set: set of connectors for the new config | |
521 | * @fb: new framebuffer | |
522 | * | |
523 | * LOCKING: | |
524 | * Caller must hold mode config lock. | |
525 | * | |
526 | * Setup a new configuration, provided by the user in @crtc_info, and enable | |
527 | * it. | |
528 | * | |
529 | * RETURNS: | |
530 | * Zero. (FIXME) | |
531 | */ | |
532 | int drm_crtc_helper_set_config(struct drm_mode_set *set) | |
533 | { | |
534 | struct drm_device *dev; | |
e67aae79 MM |
535 | struct drm_crtc *save_crtcs, *new_crtc, *crtc; |
536 | struct drm_encoder *save_encoders, *new_encoder, *encoder; | |
7bec756c | 537 | struct drm_framebuffer *old_fb = NULL; |
4cb72b17 JB |
538 | bool mode_changed = false; /* if true do a full mode set */ |
539 | bool fb_changed = false; /* if true and !mode_changed just do a flip */ | |
e67aae79 | 540 | struct drm_connector *save_connectors, *connector; |
f453ba04 DA |
541 | int count = 0, ro, fail = 0; |
542 | struct drm_crtc_helper_funcs *crtc_funcs; | |
c5006cfe | 543 | struct drm_mode_set save_set; |
4a1b0714 | 544 | int ret; |
bf9dc102 | 545 | int i; |
f453ba04 | 546 | |
58367ed6 | 547 | DRM_DEBUG_KMS("\n"); |
f453ba04 DA |
548 | |
549 | if (!set) | |
550 | return -EINVAL; | |
551 | ||
552 | if (!set->crtc) | |
553 | return -EINVAL; | |
554 | ||
555 | if (!set->crtc->helper_private) | |
556 | return -EINVAL; | |
557 | ||
558 | crtc_funcs = set->crtc->helper_private; | |
559 | ||
ede3ff52 CW |
560 | if (!set->mode) |
561 | set->fb = NULL; | |
562 | ||
9440106b JG |
563 | if (set->fb) { |
564 | DRM_DEBUG_KMS("[CRTC:%d] [FB:%d] #connectors=%d (x y) (%i %i)\n", | |
565 | set->crtc->base.id, set->fb->base.id, | |
566 | (int)set->num_connectors, set->x, set->y); | |
567 | } else { | |
ede3ff52 | 568 | DRM_DEBUG_KMS("[CRTC:%d] [NOFB]\n", set->crtc->base.id); |
6eebd6bb | 569 | return drm_crtc_helper_disable(set->crtc); |
9440106b | 570 | } |
f453ba04 DA |
571 | |
572 | dev = set->crtc->dev; | |
573 | ||
e67aae79 MM |
574 | /* Allocate space for the backup of all (non-pointer) crtc, encoder and |
575 | * connector data. */ | |
576 | save_crtcs = kzalloc(dev->mode_config.num_crtc * | |
577 | sizeof(struct drm_crtc), GFP_KERNEL); | |
f453ba04 DA |
578 | if (!save_crtcs) |
579 | return -ENOMEM; | |
580 | ||
e67aae79 MM |
581 | save_encoders = kzalloc(dev->mode_config.num_encoder * |
582 | sizeof(struct drm_encoder), GFP_KERNEL); | |
f453ba04 DA |
583 | if (!save_encoders) { |
584 | kfree(save_crtcs); | |
585 | return -ENOMEM; | |
586 | } | |
587 | ||
e67aae79 MM |
588 | save_connectors = kzalloc(dev->mode_config.num_connector * |
589 | sizeof(struct drm_connector), GFP_KERNEL); | |
590 | if (!save_connectors) { | |
591 | kfree(save_crtcs); | |
592 | kfree(save_encoders); | |
593 | return -ENOMEM; | |
594 | } | |
595 | ||
596 | /* Copy data. Note that driver private data is not affected. | |
597 | * Should anything bad happen only the expected state is | |
598 | * restored, not the drivers personal bookkeeping. | |
599 | */ | |
600 | count = 0; | |
601 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
602 | save_crtcs[count++] = *crtc; | |
603 | } | |
604 | ||
605 | count = 0; | |
606 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
607 | save_encoders[count++] = *encoder; | |
608 | } | |
609 | ||
610 | count = 0; | |
611 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
612 | save_connectors[count++] = *connector; | |
613 | } | |
614 | ||
c5006cfe JB |
615 | save_set.crtc = set->crtc; |
616 | save_set.mode = &set->crtc->mode; | |
617 | save_set.x = set->crtc->x; | |
618 | save_set.y = set->crtc->y; | |
619 | save_set.fb = set->crtc->fb; | |
620 | ||
f453ba04 DA |
621 | /* We should be able to check here if the fb has the same properties |
622 | * and then just flip_or_move it */ | |
623 | if (set->crtc->fb != set->fb) { | |
712531bf | 624 | /* If we have no fb then treat it as a full mode set */ |
7bec756c | 625 | if (set->crtc->fb == NULL) { |
58367ed6 | 626 | DRM_DEBUG_KMS("crtc has no fb, full mode set\n"); |
712531bf | 627 | mode_changed = true; |
4cb72b17 JB |
628 | } else if (set->fb == NULL) { |
629 | mode_changed = true; | |
46e48456 JB |
630 | } else if (set->fb->depth != set->crtc->fb->depth) { |
631 | mode_changed = true; | |
632 | } else if (set->fb->bits_per_pixel != | |
633 | set->crtc->fb->bits_per_pixel) { | |
634 | mode_changed = true; | |
8dff4742 | 635 | } else |
712531bf | 636 | fb_changed = true; |
f453ba04 DA |
637 | } |
638 | ||
639 | if (set->x != set->crtc->x || set->y != set->crtc->y) | |
712531bf | 640 | fb_changed = true; |
f453ba04 DA |
641 | |
642 | if (set->mode && !drm_mode_equal(set->mode, &set->crtc->mode)) { | |
58367ed6 | 643 | DRM_DEBUG_KMS("modes are different, full mode set\n"); |
f453ba04 DA |
644 | drm_mode_debug_printmodeline(&set->crtc->mode); |
645 | drm_mode_debug_printmodeline(set->mode); | |
712531bf | 646 | mode_changed = true; |
f453ba04 DA |
647 | } |
648 | ||
649 | /* a) traverse passed in connector list and get encoders for them */ | |
650 | count = 0; | |
651 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
652 | struct drm_connector_helper_funcs *connector_funcs = | |
653 | connector->helper_private; | |
f453ba04 DA |
654 | new_encoder = connector->encoder; |
655 | for (ro = 0; ro < set->num_connectors; ro++) { | |
656 | if (set->connectors[ro] == connector) { | |
657 | new_encoder = connector_funcs->best_encoder(connector); | |
658 | /* if we can't get an encoder for a connector | |
659 | we are setting now - then fail */ | |
660 | if (new_encoder == NULL) | |
661 | /* don't break so fail path works correct */ | |
662 | fail = 1; | |
663 | break; | |
664 | } | |
665 | } | |
666 | ||
667 | if (new_encoder != connector->encoder) { | |
58367ed6 | 668 | DRM_DEBUG_KMS("encoder changed, full mode switch\n"); |
712531bf | 669 | mode_changed = true; |
ff846ab7 MM |
670 | /* If the encoder is reused for another connector, then |
671 | * the appropriate crtc will be set later. | |
672 | */ | |
ff6fdbed MM |
673 | if (connector->encoder) |
674 | connector->encoder->crtc = NULL; | |
f453ba04 DA |
675 | connector->encoder = new_encoder; |
676 | } | |
677 | } | |
678 | ||
679 | if (fail) { | |
680 | ret = -EINVAL; | |
e67aae79 | 681 | goto fail; |
f453ba04 DA |
682 | } |
683 | ||
684 | count = 0; | |
685 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
686 | if (!connector->encoder) | |
687 | continue; | |
688 | ||
f453ba04 DA |
689 | if (connector->encoder->crtc == set->crtc) |
690 | new_crtc = NULL; | |
691 | else | |
692 | new_crtc = connector->encoder->crtc; | |
693 | ||
694 | for (ro = 0; ro < set->num_connectors; ro++) { | |
695 | if (set->connectors[ro] == connector) | |
696 | new_crtc = set->crtc; | |
697 | } | |
7bec756c JB |
698 | |
699 | /* Make sure the new CRTC will work with the encoder */ | |
700 | if (new_crtc && | |
701 | !drm_encoder_crtc_ok(connector->encoder, new_crtc)) { | |
702 | ret = -EINVAL; | |
e67aae79 | 703 | goto fail; |
7bec756c | 704 | } |
f453ba04 | 705 | if (new_crtc != connector->encoder->crtc) { |
58367ed6 | 706 | DRM_DEBUG_KMS("crtc changed, full mode switch\n"); |
712531bf | 707 | mode_changed = true; |
f453ba04 DA |
708 | connector->encoder->crtc = new_crtc; |
709 | } | |
9440106b JG |
710 | if (new_crtc) { |
711 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] to [CRTC:%d]\n", | |
712 | connector->base.id, drm_get_connector_name(connector), | |
713 | new_crtc->base.id); | |
714 | } else { | |
715 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] to [NOCRTC]\n", | |
716 | connector->base.id, drm_get_connector_name(connector)); | |
717 | } | |
f453ba04 DA |
718 | } |
719 | ||
720 | /* mode_set_base is not a required function */ | |
712531bf JB |
721 | if (fb_changed && !crtc_funcs->mode_set_base) |
722 | mode_changed = true; | |
f453ba04 | 723 | |
712531bf | 724 | if (mode_changed) { |
9334ef75 CW |
725 | set->crtc->enabled = drm_helper_crtc_in_use(set->crtc); |
726 | if (set->crtc->enabled) { | |
58367ed6 ZY |
727 | DRM_DEBUG_KMS("attempting to set mode from" |
728 | " userspace\n"); | |
f453ba04 | 729 | drm_mode_debug_printmodeline(set->mode); |
356ad3cd CW |
730 | old_fb = set->crtc->fb; |
731 | set->crtc->fb = set->fb; | |
f453ba04 | 732 | if (!drm_crtc_helper_set_mode(set->crtc, set->mode, |
3c4fdcfb KH |
733 | set->x, set->y, |
734 | old_fb)) { | |
9440106b JG |
735 | DRM_ERROR("failed to set mode on [CRTC:%d]\n", |
736 | set->crtc->base.id); | |
0ba41e44 | 737 | set->crtc->fb = old_fb; |
f453ba04 | 738 | ret = -EINVAL; |
e67aae79 | 739 | goto fail; |
f453ba04 | 740 | } |
811aaa55 KP |
741 | DRM_DEBUG_KMS("Setting connector DPMS state to on\n"); |
742 | for (i = 0; i < set->num_connectors; i++) { | |
743 | DRM_DEBUG_KMS("\t[CONNECTOR:%d:%s] set DPMS on\n", set->connectors[i]->base.id, | |
744 | drm_get_connector_name(set->connectors[i])); | |
c7548837 | 745 | set->connectors[i]->funcs->dpms(set->connectors[i], DRM_MODE_DPMS_ON); |
811aaa55 | 746 | } |
f453ba04 DA |
747 | } |
748 | drm_helper_disable_unused_functions(dev); | |
712531bf | 749 | } else if (fb_changed) { |
9b1596af BS |
750 | set->crtc->x = set->x; |
751 | set->crtc->y = set->y; | |
752 | ||
3c4fdcfb | 753 | old_fb = set->crtc->fb; |
f453ba04 DA |
754 | if (set->crtc->fb != set->fb) |
755 | set->crtc->fb = set->fb; | |
5c3b82e2 CW |
756 | ret = crtc_funcs->mode_set_base(set->crtc, |
757 | set->x, set->y, old_fb); | |
0ba41e44 CW |
758 | if (ret != 0) { |
759 | set->crtc->fb = old_fb; | |
e67aae79 | 760 | goto fail; |
0ba41e44 | 761 | } |
f453ba04 DA |
762 | } |
763 | ||
e67aae79 | 764 | kfree(save_connectors); |
f453ba04 DA |
765 | kfree(save_encoders); |
766 | kfree(save_crtcs); | |
767 | return 0; | |
768 | ||
e67aae79 MM |
769 | fail: |
770 | /* Restore all previous data. */ | |
f453ba04 | 771 | count = 0; |
e67aae79 MM |
772 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
773 | *crtc = save_crtcs[count++]; | |
774 | } | |
e62fb64e | 775 | |
e67aae79 MM |
776 | count = 0; |
777 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
778 | *encoder = save_encoders[count++]; | |
e62fb64e | 779 | } |
e67aae79 | 780 | |
f453ba04 DA |
781 | count = 0; |
782 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
e67aae79 | 783 | *connector = save_connectors[count++]; |
f453ba04 | 784 | } |
e67aae79 | 785 | |
c5006cfe JB |
786 | /* Try to restore the config */ |
787 | if (mode_changed && | |
788 | !drm_crtc_helper_set_mode(save_set.crtc, save_set.mode, save_set.x, | |
789 | save_set.y, save_set.fb)) | |
790 | DRM_ERROR("failed to restore config after modeset failure\n"); | |
791 | ||
e67aae79 | 792 | kfree(save_connectors); |
f453ba04 | 793 | kfree(save_encoders); |
e67aae79 | 794 | kfree(save_crtcs); |
f453ba04 DA |
795 | return ret; |
796 | } | |
797 | EXPORT_SYMBOL(drm_crtc_helper_set_config); | |
798 | ||
c9fb15f6 KP |
799 | static int drm_helper_choose_encoder_dpms(struct drm_encoder *encoder) |
800 | { | |
801 | int dpms = DRM_MODE_DPMS_OFF; | |
802 | struct drm_connector *connector; | |
803 | struct drm_device *dev = encoder->dev; | |
804 | ||
805 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) | |
806 | if (connector->encoder == encoder) | |
807 | if (connector->dpms < dpms) | |
808 | dpms = connector->dpms; | |
809 | return dpms; | |
810 | } | |
811 | ||
812 | static int drm_helper_choose_crtc_dpms(struct drm_crtc *crtc) | |
813 | { | |
814 | int dpms = DRM_MODE_DPMS_OFF; | |
815 | struct drm_connector *connector; | |
816 | struct drm_device *dev = crtc->dev; | |
817 | ||
818 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) | |
819 | if (connector->encoder && connector->encoder->crtc == crtc) | |
820 | if (connector->dpms < dpms) | |
821 | dpms = connector->dpms; | |
822 | return dpms; | |
823 | } | |
824 | ||
825 | /** | |
826 | * drm_helper_connector_dpms | |
827 | * @connector affected connector | |
828 | * @mode DPMS mode | |
829 | * | |
830 | * Calls the low-level connector DPMS function, then | |
831 | * calls appropriate encoder and crtc DPMS functions as well | |
832 | */ | |
833 | void drm_helper_connector_dpms(struct drm_connector *connector, int mode) | |
834 | { | |
835 | struct drm_encoder *encoder = connector->encoder; | |
836 | struct drm_crtc *crtc = encoder ? encoder->crtc : NULL; | |
837 | int old_dpms; | |
838 | ||
839 | if (mode == connector->dpms) | |
840 | return; | |
841 | ||
842 | old_dpms = connector->dpms; | |
843 | connector->dpms = mode; | |
844 | ||
845 | /* from off to on, do crtc then encoder */ | |
846 | if (mode < old_dpms) { | |
847 | if (crtc) { | |
848 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; | |
849 | if (crtc_funcs->dpms) | |
850 | (*crtc_funcs->dpms) (crtc, | |
851 | drm_helper_choose_crtc_dpms(crtc)); | |
852 | } | |
853 | if (encoder) { | |
854 | struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; | |
855 | if (encoder_funcs->dpms) | |
856 | (*encoder_funcs->dpms) (encoder, | |
857 | drm_helper_choose_encoder_dpms(encoder)); | |
858 | } | |
859 | } | |
860 | ||
861 | /* from on to off, do encoder then crtc */ | |
862 | if (mode > old_dpms) { | |
863 | if (encoder) { | |
864 | struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; | |
865 | if (encoder_funcs->dpms) | |
866 | (*encoder_funcs->dpms) (encoder, | |
867 | drm_helper_choose_encoder_dpms(encoder)); | |
868 | } | |
869 | if (crtc) { | |
870 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; | |
871 | if (crtc_funcs->dpms) | |
872 | (*crtc_funcs->dpms) (crtc, | |
873 | drm_helper_choose_crtc_dpms(crtc)); | |
874 | } | |
875 | } | |
876 | ||
877 | return; | |
878 | } | |
879 | EXPORT_SYMBOL(drm_helper_connector_dpms); | |
880 | ||
f453ba04 | 881 | int drm_helper_mode_fill_fb_struct(struct drm_framebuffer *fb, |
308e5bcb | 882 | struct drm_mode_fb_cmd2 *mode_cmd) |
f453ba04 | 883 | { |
01f2c773 VS |
884 | int i; |
885 | ||
f453ba04 DA |
886 | fb->width = mode_cmd->width; |
887 | fb->height = mode_cmd->height; | |
01f2c773 VS |
888 | for (i = 0; i < 4; i++) { |
889 | fb->pitches[i] = mode_cmd->pitches[i]; | |
890 | fb->offsets[i] = mode_cmd->offsets[i]; | |
891 | } | |
248dbc23 | 892 | drm_fb_get_bpp_depth(mode_cmd->pixel_format, &fb->depth, |
308e5bcb JB |
893 | &fb->bits_per_pixel); |
894 | fb->pixel_format = mode_cmd->pixel_format; | |
f453ba04 DA |
895 | |
896 | return 0; | |
897 | } | |
898 | EXPORT_SYMBOL(drm_helper_mode_fill_fb_struct); | |
899 | ||
900 | int drm_helper_resume_force_mode(struct drm_device *dev) | |
901 | { | |
902 | struct drm_crtc *crtc; | |
89347bb8 DJ |
903 | struct drm_encoder *encoder; |
904 | struct drm_encoder_helper_funcs *encoder_funcs; | |
905 | struct drm_crtc_helper_funcs *crtc_funcs; | |
f453ba04 DA |
906 | int ret; |
907 | ||
908 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
909 | ||
910 | if (!crtc->enabled) | |
911 | continue; | |
912 | ||
3c4fdcfb KH |
913 | ret = drm_crtc_helper_set_mode(crtc, &crtc->mode, |
914 | crtc->x, crtc->y, crtc->fb); | |
f453ba04 DA |
915 | |
916 | if (ret == false) | |
917 | DRM_ERROR("failed to set mode on crtc %p\n", crtc); | |
89347bb8 DJ |
918 | |
919 | /* Turn off outputs that were already powered off */ | |
920 | if (drm_helper_choose_crtc_dpms(crtc)) { | |
921 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
922 | ||
923 | if(encoder->crtc != crtc) | |
924 | continue; | |
925 | ||
926 | encoder_funcs = encoder->helper_private; | |
927 | if (encoder_funcs->dpms) | |
928 | (*encoder_funcs->dpms) (encoder, | |
929 | drm_helper_choose_encoder_dpms(encoder)); | |
89347bb8 | 930 | } |
817e631e CW |
931 | |
932 | crtc_funcs = crtc->helper_private; | |
933 | if (crtc_funcs->dpms) | |
934 | (*crtc_funcs->dpms) (crtc, | |
935 | drm_helper_choose_crtc_dpms(crtc)); | |
89347bb8 | 936 | } |
f453ba04 | 937 | } |
af4fcb57 ZY |
938 | /* disable the unused connectors while restoring the modesetting */ |
939 | drm_helper_disable_unused_functions(dev); | |
f453ba04 DA |
940 | return 0; |
941 | } | |
942 | EXPORT_SYMBOL(drm_helper_resume_force_mode); | |
eb1f8e4f | 943 | |
3d3683f0 DV |
944 | void drm_kms_helper_hotplug_event(struct drm_device *dev) |
945 | { | |
946 | /* send a uevent + call fbdev */ | |
947 | drm_sysfs_hotplug_event(dev); | |
948 | if (dev->mode_config.funcs->output_poll_changed) | |
949 | dev->mode_config.funcs->output_poll_changed(dev); | |
950 | } | |
951 | EXPORT_SYMBOL(drm_kms_helper_hotplug_event); | |
952 | ||
eb1f8e4f | 953 | #define DRM_OUTPUT_POLL_PERIOD (10*HZ) |
991ea75c | 954 | static void output_poll_execute(struct work_struct *work) |
eb1f8e4f | 955 | { |
991ea75c TH |
956 | struct delayed_work *delayed_work = to_delayed_work(work); |
957 | struct drm_device *dev = container_of(delayed_work, struct drm_device, mode_config.output_poll_work); | |
eb1f8e4f | 958 | struct drm_connector *connector; |
c5027dec | 959 | enum drm_connector_status old_status; |
eb1f8e4f | 960 | bool repoll = false, changed = false; |
eb1f8e4f | 961 | |
e58f637b CW |
962 | if (!drm_kms_helper_poll) |
963 | return; | |
964 | ||
eb1f8e4f DA |
965 | mutex_lock(&dev->mode_config.mutex); |
966 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
967 | ||
11e68685 DV |
968 | /* Ignore forced connectors. */ |
969 | if (connector->force) | |
970 | continue; | |
971 | ||
816da85a DV |
972 | /* Ignore HPD capable connectors and connectors where we don't |
973 | * want any hotplug detection at all for polling. */ | |
974 | if (!connector->polled || connector->polled == DRM_CONNECTOR_POLL_HPD) | |
eb1f8e4f DA |
975 | continue; |
976 | ||
977 | else if (connector->polled & (DRM_CONNECTOR_POLL_CONNECT | DRM_CONNECTOR_POLL_DISCONNECT)) | |
978 | repoll = true; | |
979 | ||
980 | old_status = connector->status; | |
981 | /* if we are connected and don't want to poll for disconnect | |
982 | skip it */ | |
983 | if (old_status == connector_status_connected && | |
816da85a | 984 | !(connector->polled & DRM_CONNECTOR_POLL_DISCONNECT)) |
eb1f8e4f DA |
985 | continue; |
986 | ||
c5027dec | 987 | connector->status = connector->funcs->detect(connector, false); |
0f16830e CW |
988 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] status updated from %d to %d\n", |
989 | connector->base.id, | |
990 | drm_get_connector_name(connector), | |
991 | old_status, connector->status); | |
c5027dec | 992 | if (old_status != connector->status) |
eb1f8e4f DA |
993 | changed = true; |
994 | } | |
995 | ||
996 | mutex_unlock(&dev->mode_config.mutex); | |
997 | ||
3d3683f0 DV |
998 | if (changed) |
999 | drm_kms_helper_hotplug_event(dev); | |
eb1f8e4f | 1000 | |
9a919c46 | 1001 | if (repoll) |
3b07e9ca | 1002 | schedule_delayed_work(delayed_work, DRM_OUTPUT_POLL_PERIOD); |
eb1f8e4f DA |
1003 | } |
1004 | ||
fbf81762 DA |
1005 | void drm_kms_helper_poll_disable(struct drm_device *dev) |
1006 | { | |
1007 | if (!dev->mode_config.poll_enabled) | |
1008 | return; | |
991ea75c | 1009 | cancel_delayed_work_sync(&dev->mode_config.output_poll_work); |
fbf81762 DA |
1010 | } |
1011 | EXPORT_SYMBOL(drm_kms_helper_poll_disable); | |
1012 | ||
1013 | void drm_kms_helper_poll_enable(struct drm_device *dev) | |
eb1f8e4f | 1014 | { |
eb1f8e4f | 1015 | bool poll = false; |
fbf81762 | 1016 | struct drm_connector *connector; |
eb1f8e4f | 1017 | |
e58f637b CW |
1018 | if (!dev->mode_config.poll_enabled || !drm_kms_helper_poll) |
1019 | return; | |
1020 | ||
eb1f8e4f DA |
1021 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
1022 | if (connector->polled) | |
1023 | poll = true; | |
1024 | } | |
eb1f8e4f | 1025 | |
9a919c46 | 1026 | if (poll) |
3b07e9ca | 1027 | schedule_delayed_work(&dev->mode_config.output_poll_work, DRM_OUTPUT_POLL_PERIOD); |
eb1f8e4f | 1028 | } |
fbf81762 DA |
1029 | EXPORT_SYMBOL(drm_kms_helper_poll_enable); |
1030 | ||
1031 | void drm_kms_helper_poll_init(struct drm_device *dev) | |
1032 | { | |
991ea75c | 1033 | INIT_DELAYED_WORK(&dev->mode_config.output_poll_work, output_poll_execute); |
fbf81762 DA |
1034 | dev->mode_config.poll_enabled = true; |
1035 | ||
1036 | drm_kms_helper_poll_enable(dev); | |
1037 | } | |
eb1f8e4f DA |
1038 | EXPORT_SYMBOL(drm_kms_helper_poll_init); |
1039 | ||
1040 | void drm_kms_helper_poll_fini(struct drm_device *dev) | |
1041 | { | |
fbf81762 | 1042 | drm_kms_helper_poll_disable(dev); |
eb1f8e4f DA |
1043 | } |
1044 | EXPORT_SYMBOL(drm_kms_helper_poll_fini); | |
1045 | ||
69787f7d | 1046 | void drm_helper_hpd_irq_event(struct drm_device *dev) |
eb1f8e4f | 1047 | { |
816da85a DV |
1048 | struct drm_connector *connector; |
1049 | enum drm_connector_status old_status; | |
1050 | bool changed = false; | |
1051 | ||
eb1f8e4f DA |
1052 | if (!dev->mode_config.poll_enabled) |
1053 | return; | |
e58f637b | 1054 | |
816da85a DV |
1055 | mutex_lock(&dev->mode_config.mutex); |
1056 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
1057 | ||
1058 | /* Only handle HPD capable connectors. */ | |
1059 | if (!(connector->polled & DRM_CONNECTOR_POLL_HPD)) | |
1060 | continue; | |
1061 | ||
1062 | old_status = connector->status; | |
1063 | ||
1064 | connector->status = connector->funcs->detect(connector, false); | |
1065 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] status updated from %d to %d\n", | |
1066 | connector->base.id, | |
1067 | drm_get_connector_name(connector), | |
1068 | old_status, connector->status); | |
1069 | if (old_status != connector->status) | |
1070 | changed = true; | |
1071 | } | |
1072 | ||
1073 | mutex_unlock(&dev->mode_config.mutex); | |
1074 | ||
1075 | if (changed) | |
1076 | drm_kms_helper_hotplug_event(dev); | |
1077 | } | |
eb1f8e4f | 1078 | EXPORT_SYMBOL(drm_helper_hpd_irq_event); |