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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 | |
0d4ed4c8 DV |
42 | /** |
43 | * drm_helper_move_panel_connectors_to_head() - move panels to the front in the | |
44 | * connector list | |
45 | * @dev: drm device to operate on | |
46 | * | |
47 | * Some userspace presumes that the first connected connector is the main | |
48 | * display, where it's supposed to display e.g. the login screen. For | |
49 | * laptops, this should be the main panel. Use this function to sort all | |
50 | * (eDP/LVDS) panels to the front of the connector list, instead of | |
51 | * painstakingly trying to initialize them in the right order. | |
52 | */ | |
cfc1a062 DV |
53 | void drm_helper_move_panel_connectors_to_head(struct drm_device *dev) |
54 | { | |
55 | struct drm_connector *connector, *tmp; | |
56 | struct list_head panel_list; | |
57 | ||
58 | INIT_LIST_HEAD(&panel_list); | |
59 | ||
60 | list_for_each_entry_safe(connector, tmp, | |
61 | &dev->mode_config.connector_list, head) { | |
62 | if (connector->connector_type == DRM_MODE_CONNECTOR_LVDS || | |
63 | connector->connector_type == DRM_MODE_CONNECTOR_eDP) | |
64 | list_move_tail(&connector->head, &panel_list); | |
65 | } | |
66 | ||
67 | list_splice(&panel_list, &dev->mode_config.connector_list); | |
68 | } | |
69 | EXPORT_SYMBOL(drm_helper_move_panel_connectors_to_head); | |
70 | ||
e58f637b CW |
71 | static bool drm_kms_helper_poll = true; |
72 | module_param_named(poll, drm_kms_helper_poll, bool, 0600); | |
73 | ||
6714977b | 74 | static void drm_mode_validate_flag(struct drm_connector *connector, |
75 | int flags) | |
76 | { | |
a1178ca0 | 77 | struct drm_display_mode *mode; |
6714977b | 78 | |
79 | if (flags == (DRM_MODE_FLAG_DBLSCAN | DRM_MODE_FLAG_INTERLACE)) | |
80 | return; | |
81 | ||
a1178ca0 | 82 | list_for_each_entry(mode, &connector->modes, head) { |
6714977b | 83 | if ((mode->flags & DRM_MODE_FLAG_INTERLACE) && |
84 | !(flags & DRM_MODE_FLAG_INTERLACE)) | |
85 | mode->status = MODE_NO_INTERLACE; | |
86 | if ((mode->flags & DRM_MODE_FLAG_DBLSCAN) && | |
87 | !(flags & DRM_MODE_FLAG_DBLSCAN)) | |
88 | mode->status = MODE_NO_DBLESCAN; | |
89 | } | |
90 | ||
91 | return; | |
92 | } | |
93 | ||
f453ba04 | 94 | /** |
38651674 | 95 | * drm_helper_probe_single_connector_modes - get complete set of display modes |
0d4ed4c8 | 96 | * @connector: connector to probe |
f453ba04 DA |
97 | * @maxX: max width for modes |
98 | * @maxY: max height for modes | |
99 | * | |
100 | * LOCKING: | |
101 | * Caller must hold mode config lock. | |
102 | * | |
0d4ed4c8 DV |
103 | * Based on the helper callbacks implemented by @connector try to detect all |
104 | * valid modes. Modes will first be added to the connector's probed_modes list, | |
105 | * then culled (based on validity and the @maxX, @maxY parameters) and put into | |
106 | * the normal modes list. | |
f453ba04 | 107 | * |
0d4ed4c8 DV |
108 | * Intended to be use as a generic implementation of the ->probe() @connector |
109 | * callback for drivers that use the crtc helpers for output mode filtering and | |
110 | * detection. | |
40a518d9 JB |
111 | * |
112 | * RETURNS: | |
113 | * Number of modes found on @connector. | |
f453ba04 | 114 | */ |
40a518d9 JB |
115 | int drm_helper_probe_single_connector_modes(struct drm_connector *connector, |
116 | uint32_t maxX, uint32_t maxY) | |
f453ba04 DA |
117 | { |
118 | struct drm_device *dev = connector->dev; | |
a1178ca0 | 119 | struct drm_display_mode *mode; |
f453ba04 DA |
120 | struct drm_connector_helper_funcs *connector_funcs = |
121 | connector->helper_private; | |
40a518d9 | 122 | int count = 0; |
6714977b | 123 | int mode_flags = 0; |
f453ba04 | 124 | |
9440106b JG |
125 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", connector->base.id, |
126 | drm_get_connector_name(connector)); | |
f453ba04 | 127 | /* set all modes to the unverified state */ |
a1178ca0 | 128 | list_for_each_entry(mode, &connector->modes, head) |
f453ba04 DA |
129 | mode->status = MODE_UNVERIFIED; |
130 | ||
d50ba256 DA |
131 | if (connector->force) { |
132 | if (connector->force == DRM_FORCE_ON) | |
133 | connector->status = connector_status_connected; | |
134 | else | |
135 | connector->status = connector_status_disconnected; | |
136 | if (connector->funcs->force) | |
137 | connector->funcs->force(connector); | |
e58f637b | 138 | } else { |
930a9e28 | 139 | connector->status = connector->funcs->detect(connector, true); |
e58f637b | 140 | } |
f453ba04 | 141 | |
905bc9ff DV |
142 | /* Re-enable polling in case the global poll config changed. */ |
143 | if (drm_kms_helper_poll != dev->mode_config.poll_running) | |
144 | drm_kms_helper_poll_enable(dev); | |
145 | ||
146 | dev->mode_config.poll_running = drm_kms_helper_poll; | |
147 | ||
f453ba04 | 148 | if (connector->status == connector_status_disconnected) { |
9440106b JG |
149 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] disconnected\n", |
150 | connector->base.id, drm_get_connector_name(connector)); | |
72539832 | 151 | drm_mode_connector_update_edid_property(connector, NULL); |
620f3781 | 152 | goto prune; |
f453ba04 DA |
153 | } |
154 | ||
da0df92b CE |
155 | #ifdef CONFIG_DRM_LOAD_EDID_FIRMWARE |
156 | count = drm_load_edid_firmware(connector); | |
157 | if (count == 0) | |
158 | #endif | |
159 | count = (*connector_funcs->get_modes)(connector); | |
160 | ||
c7ef35a9 | 161 | if (count == 0 && connector->status == connector_status_connected) |
9632b41f | 162 | count = drm_add_modes_noedid(connector, 1024, 768); |
c7ef35a9 CW |
163 | if (count == 0) |
164 | goto prune; | |
f453ba04 | 165 | |
40a518d9 | 166 | drm_mode_connector_list_update(connector); |
f453ba04 DA |
167 | |
168 | if (maxX && maxY) | |
169 | drm_mode_validate_size(dev, &connector->modes, maxX, | |
170 | maxY, 0); | |
6714977b | 171 | |
172 | if (connector->interlace_allowed) | |
173 | mode_flags |= DRM_MODE_FLAG_INTERLACE; | |
174 | if (connector->doublescan_allowed) | |
175 | mode_flags |= DRM_MODE_FLAG_DBLSCAN; | |
176 | drm_mode_validate_flag(connector, mode_flags); | |
177 | ||
a1178ca0 | 178 | list_for_each_entry(mode, &connector->modes, head) { |
f453ba04 DA |
179 | if (mode->status == MODE_OK) |
180 | mode->status = connector_funcs->mode_valid(connector, | |
181 | mode); | |
182 | } | |
183 | ||
620f3781 | 184 | prune: |
f453ba04 DA |
185 | drm_mode_prune_invalid(dev, &connector->modes, true); |
186 | ||
40a518d9 JB |
187 | if (list_empty(&connector->modes)) |
188 | return 0; | |
f453ba04 DA |
189 | |
190 | drm_mode_sort(&connector->modes); | |
191 | ||
9440106b JG |
192 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] probed modes :\n", connector->base.id, |
193 | drm_get_connector_name(connector)); | |
a1178ca0 | 194 | list_for_each_entry(mode, &connector->modes, head) { |
f453ba04 DA |
195 | mode->vrefresh = drm_mode_vrefresh(mode); |
196 | ||
197 | drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V); | |
198 | drm_mode_debug_printmodeline(mode); | |
199 | } | |
40a518d9 JB |
200 | |
201 | return count; | |
f453ba04 DA |
202 | } |
203 | EXPORT_SYMBOL(drm_helper_probe_single_connector_modes); | |
204 | ||
c9fb15f6 KP |
205 | /** |
206 | * drm_helper_encoder_in_use - check if a given encoder is in use | |
207 | * @encoder: encoder to check | |
208 | * | |
209 | * LOCKING: | |
210 | * Caller must hold mode config lock. | |
211 | * | |
212 | * Walk @encoders's DRM device's mode_config and see if it's in use. | |
213 | * | |
214 | * RETURNS: | |
215 | * True if @encoder is part of the mode_config, false otherwise. | |
216 | */ | |
217 | bool drm_helper_encoder_in_use(struct drm_encoder *encoder) | |
218 | { | |
219 | struct drm_connector *connector; | |
220 | struct drm_device *dev = encoder->dev; | |
221 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) | |
222 | if (connector->encoder == encoder) | |
223 | return true; | |
224 | return false; | |
225 | } | |
226 | EXPORT_SYMBOL(drm_helper_encoder_in_use); | |
227 | ||
f453ba04 DA |
228 | /** |
229 | * drm_helper_crtc_in_use - check if a given CRTC is in a mode_config | |
230 | * @crtc: CRTC to check | |
231 | * | |
232 | * LOCKING: | |
233 | * Caller must hold mode config lock. | |
234 | * | |
235 | * Walk @crtc's DRM device's mode_config and see if it's in use. | |
236 | * | |
237 | * RETURNS: | |
238 | * True if @crtc is part of the mode_config, false otherwise. | |
239 | */ | |
240 | bool drm_helper_crtc_in_use(struct drm_crtc *crtc) | |
241 | { | |
242 | struct drm_encoder *encoder; | |
243 | struct drm_device *dev = crtc->dev; | |
244 | /* FIXME: Locking around list access? */ | |
245 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) | |
c9fb15f6 | 246 | if (encoder->crtc == crtc && drm_helper_encoder_in_use(encoder)) |
f453ba04 DA |
247 | return true; |
248 | return false; | |
249 | } | |
250 | EXPORT_SYMBOL(drm_helper_crtc_in_use); | |
251 | ||
86a1b9d1 BS |
252 | static void |
253 | drm_encoder_disable(struct drm_encoder *encoder) | |
254 | { | |
255 | struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; | |
256 | ||
257 | if (encoder_funcs->disable) | |
258 | (*encoder_funcs->disable)(encoder); | |
259 | else | |
260 | (*encoder_funcs->dpms)(encoder, DRM_MODE_DPMS_OFF); | |
261 | } | |
262 | ||
f453ba04 | 263 | /** |
89347bb8 | 264 | * drm_helper_disable_unused_functions - disable unused objects |
f453ba04 DA |
265 | * @dev: DRM device |
266 | * | |
267 | * LOCKING: | |
268 | * Caller must hold mode config lock. | |
269 | * | |
270 | * If an connector or CRTC isn't part of @dev's mode_config, it can be disabled | |
271 | * by calling its dpms function, which should power it off. | |
272 | */ | |
273 | void drm_helper_disable_unused_functions(struct drm_device *dev) | |
274 | { | |
275 | struct drm_encoder *encoder; | |
a3a0544b | 276 | struct drm_connector *connector; |
f453ba04 DA |
277 | struct drm_crtc *crtc; |
278 | ||
a3a0544b DA |
279 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
280 | if (!connector->encoder) | |
281 | continue; | |
282 | if (connector->status == connector_status_disconnected) | |
283 | connector->encoder = NULL; | |
284 | } | |
285 | ||
f453ba04 | 286 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
92971021 | 287 | if (!drm_helper_encoder_in_use(encoder)) { |
86a1b9d1 | 288 | drm_encoder_disable(encoder); |
9c552dd7 DA |
289 | /* disconnector encoder from any connector */ |
290 | encoder->crtc = NULL; | |
a3a0544b | 291 | } |
f453ba04 DA |
292 | } |
293 | ||
294 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
295 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; | |
296 | crtc->enabled = drm_helper_crtc_in_use(crtc); | |
297 | if (!crtc->enabled) { | |
5c8d7171 AD |
298 | if (crtc_funcs->disable) |
299 | (*crtc_funcs->disable)(crtc); | |
300 | else | |
301 | (*crtc_funcs->dpms)(crtc, DRM_MODE_DPMS_OFF); | |
f453ba04 DA |
302 | crtc->fb = NULL; |
303 | } | |
304 | } | |
305 | } | |
306 | EXPORT_SYMBOL(drm_helper_disable_unused_functions); | |
307 | ||
7bec756c JB |
308 | /** |
309 | * drm_encoder_crtc_ok - can a given crtc drive a given encoder? | |
310 | * @encoder: encoder to test | |
311 | * @crtc: crtc to test | |
312 | * | |
313 | * Return false if @encoder can't be driven by @crtc, true otherwise. | |
314 | */ | |
315 | static bool drm_encoder_crtc_ok(struct drm_encoder *encoder, | |
316 | struct drm_crtc *crtc) | |
317 | { | |
318 | struct drm_device *dev; | |
319 | struct drm_crtc *tmp; | |
320 | int crtc_mask = 1; | |
321 | ||
fce7d61b | 322 | WARN(!crtc, "checking null crtc?\n"); |
7bec756c JB |
323 | |
324 | dev = crtc->dev; | |
325 | ||
326 | list_for_each_entry(tmp, &dev->mode_config.crtc_list, head) { | |
327 | if (tmp == crtc) | |
328 | break; | |
329 | crtc_mask <<= 1; | |
330 | } | |
331 | ||
332 | if (encoder->possible_crtcs & crtc_mask) | |
333 | return true; | |
334 | return false; | |
335 | } | |
336 | ||
337 | /* | |
338 | * Check the CRTC we're going to map each output to vs. its current | |
339 | * CRTC. If they don't match, we have to disable the output and the CRTC | |
340 | * since the driver will have to re-route things. | |
341 | */ | |
342 | static void | |
343 | drm_crtc_prepare_encoders(struct drm_device *dev) | |
344 | { | |
345 | struct drm_encoder_helper_funcs *encoder_funcs; | |
346 | struct drm_encoder *encoder; | |
347 | ||
348 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
349 | encoder_funcs = encoder->helper_private; | |
350 | /* Disable unused encoders */ | |
351 | if (encoder->crtc == NULL) | |
86a1b9d1 | 352 | drm_encoder_disable(encoder); |
7bec756c JB |
353 | /* Disable encoders whose CRTC is about to change */ |
354 | if (encoder_funcs->get_crtc && | |
355 | encoder->crtc != (*encoder_funcs->get_crtc)(encoder)) | |
86a1b9d1 | 356 | drm_encoder_disable(encoder); |
7bec756c JB |
357 | } |
358 | } | |
359 | ||
f453ba04 | 360 | /** |
0d4ed4c8 | 361 | * drm_crtc_helper_set_mode - internal helper to set a mode |
f453ba04 DA |
362 | * @crtc: CRTC to program |
363 | * @mode: mode to use | |
4c9287c6 AD |
364 | * @x: horizontal offset into the surface |
365 | * @y: vertical offset into the surface | |
0d4ed4c8 | 366 | * @old_fb: old framebuffer, for cleanup |
f453ba04 DA |
367 | * |
368 | * LOCKING: | |
369 | * Caller must hold mode config lock. | |
370 | * | |
371 | * Try to set @mode on @crtc. Give @crtc and its associated connectors a chance | |
0d4ed4c8 DV |
372 | * to fixup or reject the mode prior to trying to set it. This is an internal |
373 | * helper that drivers could e.g. use to update properties that require the | |
374 | * entire output pipe to be disabled and re-enabled in a new configuration. For | |
375 | * example for changing whether audio is enabled on a hdmi link or for changing | |
376 | * panel fitter or dither attributes. It is also called by the | |
377 | * drm_crtc_helper_set_config() helper function to drive the mode setting | |
378 | * sequence. | |
f453ba04 DA |
379 | * |
380 | * RETURNS: | |
381 | * True if the mode was set successfully, or false otherwise. | |
382 | */ | |
383 | bool drm_crtc_helper_set_mode(struct drm_crtc *crtc, | |
384 | struct drm_display_mode *mode, | |
3c4fdcfb KH |
385 | int x, int y, |
386 | struct drm_framebuffer *old_fb) | |
f453ba04 DA |
387 | { |
388 | struct drm_device *dev = crtc->dev; | |
27641c3f | 389 | struct drm_display_mode *adjusted_mode, saved_mode, saved_hwmode; |
f453ba04 DA |
390 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
391 | struct drm_encoder_helper_funcs *encoder_funcs; | |
392 | int saved_x, saved_y; | |
393 | struct drm_encoder *encoder; | |
394 | bool ret = true; | |
395 | ||
f453ba04 | 396 | crtc->enabled = drm_helper_crtc_in_use(crtc); |
f453ba04 DA |
397 | if (!crtc->enabled) |
398 | return true; | |
399 | ||
021a8455 | 400 | adjusted_mode = drm_mode_duplicate(dev, mode); |
6bfc56aa VS |
401 | if (!adjusted_mode) |
402 | return false; | |
021a8455 | 403 | |
27641c3f | 404 | saved_hwmode = crtc->hwmode; |
f453ba04 DA |
405 | saved_mode = crtc->mode; |
406 | saved_x = crtc->x; | |
407 | saved_y = crtc->y; | |
408 | ||
409 | /* Update crtc values up front so the driver can rely on them for mode | |
410 | * setting. | |
411 | */ | |
412 | crtc->mode = *mode; | |
413 | crtc->x = x; | |
414 | crtc->y = y; | |
415 | ||
f453ba04 DA |
416 | /* Pass our mode to the connectors and the CRTC to give them a chance to |
417 | * adjust it according to limitations or connector properties, and also | |
418 | * a chance to reject the mode entirely. | |
419 | */ | |
420 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
421 | ||
422 | if (encoder->crtc != crtc) | |
423 | continue; | |
424 | encoder_funcs = encoder->helper_private; | |
425 | if (!(ret = encoder_funcs->mode_fixup(encoder, mode, | |
426 | adjusted_mode))) { | |
836e53d7 | 427 | DRM_DEBUG_KMS("Encoder fixup failed\n"); |
f453ba04 DA |
428 | goto done; |
429 | } | |
430 | } | |
431 | ||
432 | if (!(ret = crtc_funcs->mode_fixup(crtc, mode, adjusted_mode))) { | |
836e53d7 | 433 | DRM_DEBUG_KMS("CRTC fixup failed\n"); |
f453ba04 DA |
434 | goto done; |
435 | } | |
9440106b | 436 | DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id); |
f453ba04 DA |
437 | |
438 | /* Prepare the encoders and CRTCs before setting the mode. */ | |
439 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
440 | ||
441 | if (encoder->crtc != crtc) | |
442 | continue; | |
443 | encoder_funcs = encoder->helper_private; | |
444 | /* Disable the encoders as the first thing we do. */ | |
445 | encoder_funcs->prepare(encoder); | |
446 | } | |
447 | ||
7bec756c JB |
448 | drm_crtc_prepare_encoders(dev); |
449 | ||
f453ba04 DA |
450 | crtc_funcs->prepare(crtc); |
451 | ||
452 | /* Set up the DPLL and any encoders state that needs to adjust or depend | |
453 | * on the DPLL. | |
454 | */ | |
5c3b82e2 CW |
455 | ret = !crtc_funcs->mode_set(crtc, mode, adjusted_mode, x, y, old_fb); |
456 | if (!ret) | |
457 | goto done; | |
f453ba04 DA |
458 | |
459 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
460 | ||
461 | if (encoder->crtc != crtc) | |
462 | continue; | |
463 | ||
9440106b JG |
464 | DRM_DEBUG_KMS("[ENCODER:%d:%s] set [MODE:%d:%s]\n", |
465 | encoder->base.id, drm_get_encoder_name(encoder), | |
466 | mode->base.id, mode->name); | |
f453ba04 DA |
467 | encoder_funcs = encoder->helper_private; |
468 | encoder_funcs->mode_set(encoder, mode, adjusted_mode); | |
469 | } | |
470 | ||
471 | /* Now enable the clocks, plane, pipe, and connectors that we set up. */ | |
472 | crtc_funcs->commit(crtc); | |
473 | ||
474 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
475 | ||
476 | if (encoder->crtc != crtc) | |
477 | continue; | |
478 | ||
479 | encoder_funcs = encoder->helper_private; | |
480 | encoder_funcs->commit(encoder); | |
481 | ||
482 | } | |
483 | ||
27641c3f MK |
484 | /* Store real post-adjustment hardware mode. */ |
485 | crtc->hwmode = *adjusted_mode; | |
486 | ||
487 | /* Calculate and store various constants which | |
488 | * are later needed by vblank and swap-completion | |
489 | * timestamping. They are derived from true hwmode. | |
490 | */ | |
491 | drm_calc_timestamping_constants(crtc); | |
492 | ||
f453ba04 DA |
493 | /* FIXME: add subpixel order */ |
494 | done: | |
021a8455 | 495 | drm_mode_destroy(dev, adjusted_mode); |
f453ba04 | 496 | if (!ret) { |
27641c3f | 497 | crtc->hwmode = saved_hwmode; |
f453ba04 DA |
498 | crtc->mode = saved_mode; |
499 | crtc->x = saved_x; | |
500 | crtc->y = saved_y; | |
501 | } | |
502 | ||
503 | return ret; | |
504 | } | |
505 | EXPORT_SYMBOL(drm_crtc_helper_set_mode); | |
506 | ||
507 | ||
6eebd6bb CW |
508 | static int |
509 | drm_crtc_helper_disable(struct drm_crtc *crtc) | |
510 | { | |
511 | struct drm_device *dev = crtc->dev; | |
512 | struct drm_connector *connector; | |
513 | struct drm_encoder *encoder; | |
514 | ||
515 | /* Decouple all encoders and their attached connectors from this crtc */ | |
516 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
517 | if (encoder->crtc != crtc) | |
518 | continue; | |
519 | ||
520 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
521 | if (connector->encoder != encoder) | |
522 | continue; | |
523 | ||
524 | connector->encoder = NULL; | |
525 | } | |
526 | } | |
527 | ||
528 | drm_helper_disable_unused_functions(dev); | |
529 | return 0; | |
530 | } | |
531 | ||
f453ba04 DA |
532 | /** |
533 | * drm_crtc_helper_set_config - set a new config from userspace | |
0d4ed4c8 | 534 | * @set: mode set configuration |
f453ba04 DA |
535 | * |
536 | * LOCKING: | |
537 | * Caller must hold mode config lock. | |
538 | * | |
0d4ed4c8 DV |
539 | * Setup a new configuration, provided by the upper layers (either an ioctl call |
540 | * from userspace or internally e.g. from the fbdev suppport code) in @set, and | |
541 | * enable it. This is the main helper functions for drivers that implement | |
542 | * kernel mode setting with the crtc helper functions and the assorted | |
543 | * ->prepare(), ->modeset() and ->commit() helper callbacks. | |
f453ba04 DA |
544 | * |
545 | * RETURNS: | |
0d4ed4c8 | 546 | * Returns 0 on success, -ERRNO on failure. |
f453ba04 DA |
547 | */ |
548 | int drm_crtc_helper_set_config(struct drm_mode_set *set) | |
549 | { | |
550 | struct drm_device *dev; | |
e67aae79 MM |
551 | struct drm_crtc *save_crtcs, *new_crtc, *crtc; |
552 | struct drm_encoder *save_encoders, *new_encoder, *encoder; | |
7bec756c | 553 | struct drm_framebuffer *old_fb = NULL; |
4cb72b17 JB |
554 | bool mode_changed = false; /* if true do a full mode set */ |
555 | bool fb_changed = false; /* if true and !mode_changed just do a flip */ | |
e67aae79 | 556 | struct drm_connector *save_connectors, *connector; |
f453ba04 DA |
557 | int count = 0, ro, fail = 0; |
558 | struct drm_crtc_helper_funcs *crtc_funcs; | |
c5006cfe | 559 | struct drm_mode_set save_set; |
4a1b0714 | 560 | int ret; |
bf9dc102 | 561 | int i; |
f453ba04 | 562 | |
58367ed6 | 563 | DRM_DEBUG_KMS("\n"); |
f453ba04 DA |
564 | |
565 | if (!set) | |
566 | return -EINVAL; | |
567 | ||
568 | if (!set->crtc) | |
569 | return -EINVAL; | |
570 | ||
571 | if (!set->crtc->helper_private) | |
572 | return -EINVAL; | |
573 | ||
574 | crtc_funcs = set->crtc->helper_private; | |
575 | ||
ede3ff52 CW |
576 | if (!set->mode) |
577 | set->fb = NULL; | |
578 | ||
9440106b JG |
579 | if (set->fb) { |
580 | DRM_DEBUG_KMS("[CRTC:%d] [FB:%d] #connectors=%d (x y) (%i %i)\n", | |
581 | set->crtc->base.id, set->fb->base.id, | |
582 | (int)set->num_connectors, set->x, set->y); | |
583 | } else { | |
ede3ff52 | 584 | DRM_DEBUG_KMS("[CRTC:%d] [NOFB]\n", set->crtc->base.id); |
6eebd6bb | 585 | return drm_crtc_helper_disable(set->crtc); |
9440106b | 586 | } |
f453ba04 DA |
587 | |
588 | dev = set->crtc->dev; | |
589 | ||
e67aae79 MM |
590 | /* Allocate space for the backup of all (non-pointer) crtc, encoder and |
591 | * connector data. */ | |
592 | save_crtcs = kzalloc(dev->mode_config.num_crtc * | |
593 | sizeof(struct drm_crtc), GFP_KERNEL); | |
f453ba04 DA |
594 | if (!save_crtcs) |
595 | return -ENOMEM; | |
596 | ||
e67aae79 MM |
597 | save_encoders = kzalloc(dev->mode_config.num_encoder * |
598 | sizeof(struct drm_encoder), GFP_KERNEL); | |
f453ba04 DA |
599 | if (!save_encoders) { |
600 | kfree(save_crtcs); | |
601 | return -ENOMEM; | |
602 | } | |
603 | ||
e67aae79 MM |
604 | save_connectors = kzalloc(dev->mode_config.num_connector * |
605 | sizeof(struct drm_connector), GFP_KERNEL); | |
606 | if (!save_connectors) { | |
607 | kfree(save_crtcs); | |
608 | kfree(save_encoders); | |
609 | return -ENOMEM; | |
610 | } | |
611 | ||
612 | /* Copy data. Note that driver private data is not affected. | |
613 | * Should anything bad happen only the expected state is | |
614 | * restored, not the drivers personal bookkeeping. | |
615 | */ | |
616 | count = 0; | |
617 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
618 | save_crtcs[count++] = *crtc; | |
619 | } | |
620 | ||
621 | count = 0; | |
622 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
623 | save_encoders[count++] = *encoder; | |
624 | } | |
625 | ||
626 | count = 0; | |
627 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
628 | save_connectors[count++] = *connector; | |
629 | } | |
630 | ||
c5006cfe JB |
631 | save_set.crtc = set->crtc; |
632 | save_set.mode = &set->crtc->mode; | |
633 | save_set.x = set->crtc->x; | |
634 | save_set.y = set->crtc->y; | |
635 | save_set.fb = set->crtc->fb; | |
636 | ||
f453ba04 DA |
637 | /* We should be able to check here if the fb has the same properties |
638 | * and then just flip_or_move it */ | |
639 | if (set->crtc->fb != set->fb) { | |
712531bf | 640 | /* If we have no fb then treat it as a full mode set */ |
7bec756c | 641 | if (set->crtc->fb == NULL) { |
58367ed6 | 642 | DRM_DEBUG_KMS("crtc has no fb, full mode set\n"); |
712531bf | 643 | mode_changed = true; |
4cb72b17 JB |
644 | } else if (set->fb == NULL) { |
645 | mode_changed = true; | |
46e48456 JB |
646 | } else if (set->fb->depth != set->crtc->fb->depth) { |
647 | mode_changed = true; | |
648 | } else if (set->fb->bits_per_pixel != | |
649 | set->crtc->fb->bits_per_pixel) { | |
650 | mode_changed = true; | |
8dff4742 | 651 | } else |
712531bf | 652 | fb_changed = true; |
f453ba04 DA |
653 | } |
654 | ||
655 | if (set->x != set->crtc->x || set->y != set->crtc->y) | |
712531bf | 656 | fb_changed = true; |
f453ba04 DA |
657 | |
658 | if (set->mode && !drm_mode_equal(set->mode, &set->crtc->mode)) { | |
58367ed6 | 659 | DRM_DEBUG_KMS("modes are different, full mode set\n"); |
f453ba04 DA |
660 | drm_mode_debug_printmodeline(&set->crtc->mode); |
661 | drm_mode_debug_printmodeline(set->mode); | |
712531bf | 662 | mode_changed = true; |
f453ba04 DA |
663 | } |
664 | ||
665 | /* a) traverse passed in connector list and get encoders for them */ | |
666 | count = 0; | |
667 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
668 | struct drm_connector_helper_funcs *connector_funcs = | |
669 | connector->helper_private; | |
f453ba04 DA |
670 | new_encoder = connector->encoder; |
671 | for (ro = 0; ro < set->num_connectors; ro++) { | |
672 | if (set->connectors[ro] == connector) { | |
673 | new_encoder = connector_funcs->best_encoder(connector); | |
674 | /* if we can't get an encoder for a connector | |
675 | we are setting now - then fail */ | |
676 | if (new_encoder == NULL) | |
677 | /* don't break so fail path works correct */ | |
678 | fail = 1; | |
679 | break; | |
680 | } | |
681 | } | |
682 | ||
683 | if (new_encoder != connector->encoder) { | |
58367ed6 | 684 | DRM_DEBUG_KMS("encoder changed, full mode switch\n"); |
712531bf | 685 | mode_changed = true; |
ff846ab7 MM |
686 | /* If the encoder is reused for another connector, then |
687 | * the appropriate crtc will be set later. | |
688 | */ | |
ff6fdbed MM |
689 | if (connector->encoder) |
690 | connector->encoder->crtc = NULL; | |
f453ba04 DA |
691 | connector->encoder = new_encoder; |
692 | } | |
693 | } | |
694 | ||
695 | if (fail) { | |
696 | ret = -EINVAL; | |
e67aae79 | 697 | goto fail; |
f453ba04 DA |
698 | } |
699 | ||
700 | count = 0; | |
701 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
702 | if (!connector->encoder) | |
703 | continue; | |
704 | ||
f453ba04 DA |
705 | if (connector->encoder->crtc == set->crtc) |
706 | new_crtc = NULL; | |
707 | else | |
708 | new_crtc = connector->encoder->crtc; | |
709 | ||
710 | for (ro = 0; ro < set->num_connectors; ro++) { | |
711 | if (set->connectors[ro] == connector) | |
712 | new_crtc = set->crtc; | |
713 | } | |
7bec756c JB |
714 | |
715 | /* Make sure the new CRTC will work with the encoder */ | |
716 | if (new_crtc && | |
717 | !drm_encoder_crtc_ok(connector->encoder, new_crtc)) { | |
718 | ret = -EINVAL; | |
e67aae79 | 719 | goto fail; |
7bec756c | 720 | } |
f453ba04 | 721 | if (new_crtc != connector->encoder->crtc) { |
58367ed6 | 722 | DRM_DEBUG_KMS("crtc changed, full mode switch\n"); |
712531bf | 723 | mode_changed = true; |
f453ba04 DA |
724 | connector->encoder->crtc = new_crtc; |
725 | } | |
9440106b JG |
726 | if (new_crtc) { |
727 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] to [CRTC:%d]\n", | |
728 | connector->base.id, drm_get_connector_name(connector), | |
729 | new_crtc->base.id); | |
730 | } else { | |
731 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] to [NOCRTC]\n", | |
732 | connector->base.id, drm_get_connector_name(connector)); | |
733 | } | |
f453ba04 DA |
734 | } |
735 | ||
736 | /* mode_set_base is not a required function */ | |
712531bf JB |
737 | if (fb_changed && !crtc_funcs->mode_set_base) |
738 | mode_changed = true; | |
f453ba04 | 739 | |
712531bf | 740 | if (mode_changed) { |
9334ef75 CW |
741 | set->crtc->enabled = drm_helper_crtc_in_use(set->crtc); |
742 | if (set->crtc->enabled) { | |
58367ed6 ZY |
743 | DRM_DEBUG_KMS("attempting to set mode from" |
744 | " userspace\n"); | |
f453ba04 | 745 | drm_mode_debug_printmodeline(set->mode); |
356ad3cd CW |
746 | old_fb = set->crtc->fb; |
747 | set->crtc->fb = set->fb; | |
f453ba04 | 748 | if (!drm_crtc_helper_set_mode(set->crtc, set->mode, |
3c4fdcfb KH |
749 | set->x, set->y, |
750 | old_fb)) { | |
9440106b JG |
751 | DRM_ERROR("failed to set mode on [CRTC:%d]\n", |
752 | set->crtc->base.id); | |
0ba41e44 | 753 | set->crtc->fb = old_fb; |
f453ba04 | 754 | ret = -EINVAL; |
e67aae79 | 755 | goto fail; |
f453ba04 | 756 | } |
811aaa55 KP |
757 | DRM_DEBUG_KMS("Setting connector DPMS state to on\n"); |
758 | for (i = 0; i < set->num_connectors; i++) { | |
759 | DRM_DEBUG_KMS("\t[CONNECTOR:%d:%s] set DPMS on\n", set->connectors[i]->base.id, | |
760 | drm_get_connector_name(set->connectors[i])); | |
c7548837 | 761 | set->connectors[i]->funcs->dpms(set->connectors[i], DRM_MODE_DPMS_ON); |
811aaa55 | 762 | } |
f453ba04 DA |
763 | } |
764 | drm_helper_disable_unused_functions(dev); | |
712531bf | 765 | } else if (fb_changed) { |
9b1596af BS |
766 | set->crtc->x = set->x; |
767 | set->crtc->y = set->y; | |
768 | ||
3c4fdcfb | 769 | old_fb = set->crtc->fb; |
f453ba04 DA |
770 | if (set->crtc->fb != set->fb) |
771 | set->crtc->fb = set->fb; | |
5c3b82e2 CW |
772 | ret = crtc_funcs->mode_set_base(set->crtc, |
773 | set->x, set->y, old_fb); | |
0ba41e44 CW |
774 | if (ret != 0) { |
775 | set->crtc->fb = old_fb; | |
e67aae79 | 776 | goto fail; |
0ba41e44 | 777 | } |
f453ba04 DA |
778 | } |
779 | ||
e67aae79 | 780 | kfree(save_connectors); |
f453ba04 DA |
781 | kfree(save_encoders); |
782 | kfree(save_crtcs); | |
783 | return 0; | |
784 | ||
e67aae79 MM |
785 | fail: |
786 | /* Restore all previous data. */ | |
f453ba04 | 787 | count = 0; |
e67aae79 MM |
788 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
789 | *crtc = save_crtcs[count++]; | |
790 | } | |
e62fb64e | 791 | |
e67aae79 MM |
792 | count = 0; |
793 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
794 | *encoder = save_encoders[count++]; | |
e62fb64e | 795 | } |
e67aae79 | 796 | |
f453ba04 DA |
797 | count = 0; |
798 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
e67aae79 | 799 | *connector = save_connectors[count++]; |
f453ba04 | 800 | } |
e67aae79 | 801 | |
c5006cfe JB |
802 | /* Try to restore the config */ |
803 | if (mode_changed && | |
804 | !drm_crtc_helper_set_mode(save_set.crtc, save_set.mode, save_set.x, | |
805 | save_set.y, save_set.fb)) | |
806 | DRM_ERROR("failed to restore config after modeset failure\n"); | |
807 | ||
e67aae79 | 808 | kfree(save_connectors); |
f453ba04 | 809 | kfree(save_encoders); |
e67aae79 | 810 | kfree(save_crtcs); |
f453ba04 DA |
811 | return ret; |
812 | } | |
813 | EXPORT_SYMBOL(drm_crtc_helper_set_config); | |
814 | ||
c9fb15f6 KP |
815 | static int drm_helper_choose_encoder_dpms(struct drm_encoder *encoder) |
816 | { | |
817 | int dpms = DRM_MODE_DPMS_OFF; | |
818 | struct drm_connector *connector; | |
819 | struct drm_device *dev = encoder->dev; | |
820 | ||
821 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) | |
822 | if (connector->encoder == encoder) | |
823 | if (connector->dpms < dpms) | |
824 | dpms = connector->dpms; | |
825 | return dpms; | |
826 | } | |
827 | ||
828 | static int drm_helper_choose_crtc_dpms(struct drm_crtc *crtc) | |
829 | { | |
830 | int dpms = DRM_MODE_DPMS_OFF; | |
831 | struct drm_connector *connector; | |
832 | struct drm_device *dev = crtc->dev; | |
833 | ||
834 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) | |
835 | if (connector->encoder && connector->encoder->crtc == crtc) | |
836 | if (connector->dpms < dpms) | |
837 | dpms = connector->dpms; | |
838 | return dpms; | |
839 | } | |
840 | ||
841 | /** | |
0d4ed4c8 DV |
842 | * drm_helper_connector_dpms() - connector dpms helper implementation |
843 | * @connector: affected connector | |
844 | * @mode: DPMS mode | |
c9fb15f6 | 845 | * |
0d4ed4c8 DV |
846 | * This is the main helper function provided by the crtc helper framework for |
847 | * implementing the DPMS connector attribute. It computes the new desired DPMS | |
848 | * state for all encoders and crtcs in the output mesh and calls the ->dpms() | |
849 | * callback provided by the driver appropriately. | |
c9fb15f6 KP |
850 | */ |
851 | void drm_helper_connector_dpms(struct drm_connector *connector, int mode) | |
852 | { | |
853 | struct drm_encoder *encoder = connector->encoder; | |
854 | struct drm_crtc *crtc = encoder ? encoder->crtc : NULL; | |
855 | int old_dpms; | |
856 | ||
857 | if (mode == connector->dpms) | |
858 | return; | |
859 | ||
860 | old_dpms = connector->dpms; | |
861 | connector->dpms = mode; | |
862 | ||
863 | /* from off to on, do crtc then encoder */ | |
864 | if (mode < old_dpms) { | |
865 | if (crtc) { | |
866 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; | |
867 | if (crtc_funcs->dpms) | |
868 | (*crtc_funcs->dpms) (crtc, | |
869 | drm_helper_choose_crtc_dpms(crtc)); | |
870 | } | |
871 | if (encoder) { | |
872 | struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; | |
873 | if (encoder_funcs->dpms) | |
874 | (*encoder_funcs->dpms) (encoder, | |
875 | drm_helper_choose_encoder_dpms(encoder)); | |
876 | } | |
877 | } | |
878 | ||
879 | /* from on to off, do encoder then crtc */ | |
880 | if (mode > old_dpms) { | |
881 | if (encoder) { | |
882 | struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; | |
883 | if (encoder_funcs->dpms) | |
884 | (*encoder_funcs->dpms) (encoder, | |
885 | drm_helper_choose_encoder_dpms(encoder)); | |
886 | } | |
887 | if (crtc) { | |
888 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; | |
889 | if (crtc_funcs->dpms) | |
890 | (*crtc_funcs->dpms) (crtc, | |
891 | drm_helper_choose_crtc_dpms(crtc)); | |
892 | } | |
893 | } | |
894 | ||
895 | return; | |
896 | } | |
897 | EXPORT_SYMBOL(drm_helper_connector_dpms); | |
898 | ||
f453ba04 | 899 | int drm_helper_mode_fill_fb_struct(struct drm_framebuffer *fb, |
308e5bcb | 900 | struct drm_mode_fb_cmd2 *mode_cmd) |
f453ba04 | 901 | { |
01f2c773 VS |
902 | int i; |
903 | ||
f453ba04 DA |
904 | fb->width = mode_cmd->width; |
905 | fb->height = mode_cmd->height; | |
01f2c773 VS |
906 | for (i = 0; i < 4; i++) { |
907 | fb->pitches[i] = mode_cmd->pitches[i]; | |
908 | fb->offsets[i] = mode_cmd->offsets[i]; | |
909 | } | |
248dbc23 | 910 | drm_fb_get_bpp_depth(mode_cmd->pixel_format, &fb->depth, |
308e5bcb JB |
911 | &fb->bits_per_pixel); |
912 | fb->pixel_format = mode_cmd->pixel_format; | |
f453ba04 DA |
913 | |
914 | return 0; | |
915 | } | |
916 | EXPORT_SYMBOL(drm_helper_mode_fill_fb_struct); | |
917 | ||
918 | int drm_helper_resume_force_mode(struct drm_device *dev) | |
919 | { | |
920 | struct drm_crtc *crtc; | |
89347bb8 DJ |
921 | struct drm_encoder *encoder; |
922 | struct drm_encoder_helper_funcs *encoder_funcs; | |
923 | struct drm_crtc_helper_funcs *crtc_funcs; | |
f453ba04 DA |
924 | int ret; |
925 | ||
926 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
927 | ||
928 | if (!crtc->enabled) | |
929 | continue; | |
930 | ||
3c4fdcfb KH |
931 | ret = drm_crtc_helper_set_mode(crtc, &crtc->mode, |
932 | crtc->x, crtc->y, crtc->fb); | |
f453ba04 DA |
933 | |
934 | if (ret == false) | |
935 | DRM_ERROR("failed to set mode on crtc %p\n", crtc); | |
89347bb8 DJ |
936 | |
937 | /* Turn off outputs that were already powered off */ | |
938 | if (drm_helper_choose_crtc_dpms(crtc)) { | |
939 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
940 | ||
941 | if(encoder->crtc != crtc) | |
942 | continue; | |
943 | ||
944 | encoder_funcs = encoder->helper_private; | |
945 | if (encoder_funcs->dpms) | |
946 | (*encoder_funcs->dpms) (encoder, | |
947 | drm_helper_choose_encoder_dpms(encoder)); | |
89347bb8 | 948 | } |
817e631e CW |
949 | |
950 | crtc_funcs = crtc->helper_private; | |
951 | if (crtc_funcs->dpms) | |
952 | (*crtc_funcs->dpms) (crtc, | |
953 | drm_helper_choose_crtc_dpms(crtc)); | |
89347bb8 | 954 | } |
f453ba04 | 955 | } |
af4fcb57 ZY |
956 | /* disable the unused connectors while restoring the modesetting */ |
957 | drm_helper_disable_unused_functions(dev); | |
f453ba04 DA |
958 | return 0; |
959 | } | |
960 | EXPORT_SYMBOL(drm_helper_resume_force_mode); | |
eb1f8e4f | 961 | |
3d3683f0 DV |
962 | void drm_kms_helper_hotplug_event(struct drm_device *dev) |
963 | { | |
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 | EXPORT_SYMBOL(drm_kms_helper_hotplug_event); | |
970 | ||
eb1f8e4f | 971 | #define DRM_OUTPUT_POLL_PERIOD (10*HZ) |
991ea75c | 972 | static void output_poll_execute(struct work_struct *work) |
eb1f8e4f | 973 | { |
991ea75c TH |
974 | struct delayed_work *delayed_work = to_delayed_work(work); |
975 | struct drm_device *dev = container_of(delayed_work, struct drm_device, mode_config.output_poll_work); | |
eb1f8e4f | 976 | struct drm_connector *connector; |
c5027dec | 977 | enum drm_connector_status old_status; |
eb1f8e4f | 978 | bool repoll = false, changed = false; |
eb1f8e4f | 979 | |
e58f637b CW |
980 | if (!drm_kms_helper_poll) |
981 | return; | |
982 | ||
eb1f8e4f DA |
983 | mutex_lock(&dev->mode_config.mutex); |
984 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
985 | ||
11e68685 DV |
986 | /* Ignore forced connectors. */ |
987 | if (connector->force) | |
988 | continue; | |
989 | ||
816da85a DV |
990 | /* Ignore HPD capable connectors and connectors where we don't |
991 | * want any hotplug detection at all for polling. */ | |
992 | if (!connector->polled || connector->polled == DRM_CONNECTOR_POLL_HPD) | |
eb1f8e4f DA |
993 | continue; |
994 | ||
a4f968d8 | 995 | repoll = true; |
eb1f8e4f DA |
996 | |
997 | old_status = connector->status; | |
998 | /* if we are connected and don't want to poll for disconnect | |
999 | skip it */ | |
1000 | if (old_status == connector_status_connected && | |
816da85a | 1001 | !(connector->polled & DRM_CONNECTOR_POLL_DISCONNECT)) |
eb1f8e4f DA |
1002 | continue; |
1003 | ||
c5027dec | 1004 | connector->status = connector->funcs->detect(connector, false); |
0f16830e CW |
1005 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] status updated from %d to %d\n", |
1006 | connector->base.id, | |
1007 | drm_get_connector_name(connector), | |
1008 | old_status, connector->status); | |
c5027dec | 1009 | if (old_status != connector->status) |
eb1f8e4f DA |
1010 | changed = true; |
1011 | } | |
1012 | ||
1013 | mutex_unlock(&dev->mode_config.mutex); | |
1014 | ||
3d3683f0 DV |
1015 | if (changed) |
1016 | drm_kms_helper_hotplug_event(dev); | |
eb1f8e4f | 1017 | |
9a919c46 | 1018 | if (repoll) |
3b07e9ca | 1019 | schedule_delayed_work(delayed_work, DRM_OUTPUT_POLL_PERIOD); |
eb1f8e4f DA |
1020 | } |
1021 | ||
fbf81762 DA |
1022 | void drm_kms_helper_poll_disable(struct drm_device *dev) |
1023 | { | |
1024 | if (!dev->mode_config.poll_enabled) | |
1025 | return; | |
991ea75c | 1026 | cancel_delayed_work_sync(&dev->mode_config.output_poll_work); |
fbf81762 DA |
1027 | } |
1028 | EXPORT_SYMBOL(drm_kms_helper_poll_disable); | |
1029 | ||
1030 | void drm_kms_helper_poll_enable(struct drm_device *dev) | |
eb1f8e4f | 1031 | { |
eb1f8e4f | 1032 | bool poll = false; |
fbf81762 | 1033 | struct drm_connector *connector; |
eb1f8e4f | 1034 | |
e58f637b CW |
1035 | if (!dev->mode_config.poll_enabled || !drm_kms_helper_poll) |
1036 | return; | |
1037 | ||
eb1f8e4f | 1038 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
a4f968d8 DV |
1039 | if (connector->polled & (DRM_CONNECTOR_POLL_CONNECT | |
1040 | DRM_CONNECTOR_POLL_DISCONNECT)) | |
eb1f8e4f DA |
1041 | poll = true; |
1042 | } | |
eb1f8e4f | 1043 | |
9a919c46 | 1044 | if (poll) |
3b07e9ca | 1045 | schedule_delayed_work(&dev->mode_config.output_poll_work, DRM_OUTPUT_POLL_PERIOD); |
eb1f8e4f | 1046 | } |
fbf81762 DA |
1047 | EXPORT_SYMBOL(drm_kms_helper_poll_enable); |
1048 | ||
1049 | void drm_kms_helper_poll_init(struct drm_device *dev) | |
1050 | { | |
991ea75c | 1051 | INIT_DELAYED_WORK(&dev->mode_config.output_poll_work, output_poll_execute); |
fbf81762 DA |
1052 | dev->mode_config.poll_enabled = true; |
1053 | ||
1054 | drm_kms_helper_poll_enable(dev); | |
1055 | } | |
eb1f8e4f DA |
1056 | EXPORT_SYMBOL(drm_kms_helper_poll_init); |
1057 | ||
1058 | void drm_kms_helper_poll_fini(struct drm_device *dev) | |
1059 | { | |
fbf81762 | 1060 | drm_kms_helper_poll_disable(dev); |
eb1f8e4f DA |
1061 | } |
1062 | EXPORT_SYMBOL(drm_kms_helper_poll_fini); | |
1063 | ||
69787f7d | 1064 | void drm_helper_hpd_irq_event(struct drm_device *dev) |
eb1f8e4f | 1065 | { |
816da85a DV |
1066 | struct drm_connector *connector; |
1067 | enum drm_connector_status old_status; | |
1068 | bool changed = false; | |
1069 | ||
eb1f8e4f DA |
1070 | if (!dev->mode_config.poll_enabled) |
1071 | return; | |
e58f637b | 1072 | |
816da85a DV |
1073 | mutex_lock(&dev->mode_config.mutex); |
1074 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
1075 | ||
1076 | /* Only handle HPD capable connectors. */ | |
1077 | if (!(connector->polled & DRM_CONNECTOR_POLL_HPD)) | |
1078 | continue; | |
1079 | ||
1080 | old_status = connector->status; | |
1081 | ||
1082 | connector->status = connector->funcs->detect(connector, false); | |
1083 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] status updated from %d to %d\n", | |
1084 | connector->base.id, | |
1085 | drm_get_connector_name(connector), | |
1086 | old_status, connector->status); | |
1087 | if (old_status != connector->status) | |
1088 | changed = true; | |
1089 | } | |
1090 | ||
1091 | mutex_unlock(&dev->mode_config.mutex); | |
1092 | ||
1093 | if (changed) | |
1094 | drm_kms_helper_hotplug_event(dev); | |
1095 | } | |
eb1f8e4f | 1096 | EXPORT_SYMBOL(drm_helper_hpd_irq_event); |