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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; |
ebbd97ad | 124 | bool verbose_prune = true; |
f453ba04 | 125 | |
9440106b JG |
126 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", connector->base.id, |
127 | drm_get_connector_name(connector)); | |
f453ba04 | 128 | /* set all modes to the unverified state */ |
a1178ca0 | 129 | list_for_each_entry(mode, &connector->modes, head) |
f453ba04 DA |
130 | mode->status = MODE_UNVERIFIED; |
131 | ||
d50ba256 DA |
132 | if (connector->force) { |
133 | if (connector->force == DRM_FORCE_ON) | |
134 | connector->status = connector_status_connected; | |
135 | else | |
136 | connector->status = connector_status_disconnected; | |
137 | if (connector->funcs->force) | |
138 | connector->funcs->force(connector); | |
e58f637b | 139 | } else { |
930a9e28 | 140 | connector->status = connector->funcs->detect(connector, true); |
e58f637b | 141 | } |
f453ba04 | 142 | |
905bc9ff DV |
143 | /* Re-enable polling in case the global poll config changed. */ |
144 | if (drm_kms_helper_poll != dev->mode_config.poll_running) | |
145 | drm_kms_helper_poll_enable(dev); | |
146 | ||
147 | dev->mode_config.poll_running = drm_kms_helper_poll; | |
148 | ||
f453ba04 | 149 | if (connector->status == connector_status_disconnected) { |
9440106b JG |
150 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] disconnected\n", |
151 | connector->base.id, drm_get_connector_name(connector)); | |
72539832 | 152 | drm_mode_connector_update_edid_property(connector, NULL); |
ebbd97ad | 153 | verbose_prune = false; |
620f3781 | 154 | goto prune; |
f453ba04 DA |
155 | } |
156 | ||
da0df92b CE |
157 | #ifdef CONFIG_DRM_LOAD_EDID_FIRMWARE |
158 | count = drm_load_edid_firmware(connector); | |
159 | if (count == 0) | |
160 | #endif | |
161 | count = (*connector_funcs->get_modes)(connector); | |
162 | ||
c7ef35a9 | 163 | if (count == 0 && connector->status == connector_status_connected) |
9632b41f | 164 | count = drm_add_modes_noedid(connector, 1024, 768); |
c7ef35a9 CW |
165 | if (count == 0) |
166 | goto prune; | |
f453ba04 | 167 | |
40a518d9 | 168 | drm_mode_connector_list_update(connector); |
f453ba04 DA |
169 | |
170 | if (maxX && maxY) | |
171 | drm_mode_validate_size(dev, &connector->modes, maxX, | |
172 | maxY, 0); | |
6714977b | 173 | |
174 | if (connector->interlace_allowed) | |
175 | mode_flags |= DRM_MODE_FLAG_INTERLACE; | |
176 | if (connector->doublescan_allowed) | |
177 | mode_flags |= DRM_MODE_FLAG_DBLSCAN; | |
178 | drm_mode_validate_flag(connector, mode_flags); | |
179 | ||
a1178ca0 | 180 | list_for_each_entry(mode, &connector->modes, head) { |
f453ba04 DA |
181 | if (mode->status == MODE_OK) |
182 | mode->status = connector_funcs->mode_valid(connector, | |
183 | mode); | |
184 | } | |
185 | ||
620f3781 | 186 | prune: |
ebbd97ad | 187 | drm_mode_prune_invalid(dev, &connector->modes, verbose_prune); |
f453ba04 | 188 | |
40a518d9 JB |
189 | if (list_empty(&connector->modes)) |
190 | return 0; | |
f453ba04 | 191 | |
9bc3cd56 VS |
192 | list_for_each_entry(mode, &connector->modes, head) |
193 | mode->vrefresh = drm_mode_vrefresh(mode); | |
194 | ||
f453ba04 DA |
195 | drm_mode_sort(&connector->modes); |
196 | ||
9440106b JG |
197 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] probed modes :\n", connector->base.id, |
198 | drm_get_connector_name(connector)); | |
a1178ca0 | 199 | list_for_each_entry(mode, &connector->modes, head) { |
f453ba04 DA |
200 | drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V); |
201 | drm_mode_debug_printmodeline(mode); | |
202 | } | |
40a518d9 JB |
203 | |
204 | return count; | |
f453ba04 DA |
205 | } |
206 | EXPORT_SYMBOL(drm_helper_probe_single_connector_modes); | |
207 | ||
c9fb15f6 KP |
208 | /** |
209 | * drm_helper_encoder_in_use - check if a given encoder is in use | |
210 | * @encoder: encoder to check | |
211 | * | |
212 | * LOCKING: | |
213 | * Caller must hold mode config lock. | |
214 | * | |
215 | * Walk @encoders's DRM device's mode_config and see if it's in use. | |
216 | * | |
217 | * RETURNS: | |
218 | * True if @encoder is part of the mode_config, false otherwise. | |
219 | */ | |
220 | bool drm_helper_encoder_in_use(struct drm_encoder *encoder) | |
221 | { | |
222 | struct drm_connector *connector; | |
223 | struct drm_device *dev = encoder->dev; | |
224 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) | |
225 | if (connector->encoder == encoder) | |
226 | return true; | |
227 | return false; | |
228 | } | |
229 | EXPORT_SYMBOL(drm_helper_encoder_in_use); | |
230 | ||
f453ba04 DA |
231 | /** |
232 | * drm_helper_crtc_in_use - check if a given CRTC is in a mode_config | |
233 | * @crtc: CRTC to check | |
234 | * | |
235 | * LOCKING: | |
236 | * Caller must hold mode config lock. | |
237 | * | |
238 | * Walk @crtc's DRM device's mode_config and see if it's in use. | |
239 | * | |
240 | * RETURNS: | |
241 | * True if @crtc is part of the mode_config, false otherwise. | |
242 | */ | |
243 | bool drm_helper_crtc_in_use(struct drm_crtc *crtc) | |
244 | { | |
245 | struct drm_encoder *encoder; | |
246 | struct drm_device *dev = crtc->dev; | |
247 | /* FIXME: Locking around list access? */ | |
248 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) | |
c9fb15f6 | 249 | if (encoder->crtc == crtc && drm_helper_encoder_in_use(encoder)) |
f453ba04 DA |
250 | return true; |
251 | return false; | |
252 | } | |
253 | EXPORT_SYMBOL(drm_helper_crtc_in_use); | |
254 | ||
86a1b9d1 BS |
255 | static void |
256 | drm_encoder_disable(struct drm_encoder *encoder) | |
257 | { | |
258 | struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; | |
259 | ||
260 | if (encoder_funcs->disable) | |
261 | (*encoder_funcs->disable)(encoder); | |
262 | else | |
263 | (*encoder_funcs->dpms)(encoder, DRM_MODE_DPMS_OFF); | |
264 | } | |
265 | ||
f453ba04 | 266 | /** |
89347bb8 | 267 | * drm_helper_disable_unused_functions - disable unused objects |
f453ba04 DA |
268 | * @dev: DRM device |
269 | * | |
270 | * LOCKING: | |
271 | * Caller must hold mode config lock. | |
272 | * | |
273 | * If an connector or CRTC isn't part of @dev's mode_config, it can be disabled | |
274 | * by calling its dpms function, which should power it off. | |
275 | */ | |
276 | void drm_helper_disable_unused_functions(struct drm_device *dev) | |
277 | { | |
278 | struct drm_encoder *encoder; | |
a3a0544b | 279 | struct drm_connector *connector; |
f453ba04 DA |
280 | struct drm_crtc *crtc; |
281 | ||
a3a0544b DA |
282 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
283 | if (!connector->encoder) | |
284 | continue; | |
285 | if (connector->status == connector_status_disconnected) | |
286 | connector->encoder = NULL; | |
287 | } | |
288 | ||
f453ba04 | 289 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
92971021 | 290 | if (!drm_helper_encoder_in_use(encoder)) { |
86a1b9d1 | 291 | drm_encoder_disable(encoder); |
9c552dd7 DA |
292 | /* disconnector encoder from any connector */ |
293 | encoder->crtc = NULL; | |
a3a0544b | 294 | } |
f453ba04 DA |
295 | } |
296 | ||
297 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
298 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; | |
299 | crtc->enabled = drm_helper_crtc_in_use(crtc); | |
300 | if (!crtc->enabled) { | |
5c8d7171 AD |
301 | if (crtc_funcs->disable) |
302 | (*crtc_funcs->disable)(crtc); | |
303 | else | |
304 | (*crtc_funcs->dpms)(crtc, DRM_MODE_DPMS_OFF); | |
f453ba04 DA |
305 | crtc->fb = NULL; |
306 | } | |
307 | } | |
308 | } | |
309 | EXPORT_SYMBOL(drm_helper_disable_unused_functions); | |
310 | ||
7bec756c JB |
311 | /** |
312 | * drm_encoder_crtc_ok - can a given crtc drive a given encoder? | |
313 | * @encoder: encoder to test | |
314 | * @crtc: crtc to test | |
315 | * | |
316 | * Return false if @encoder can't be driven by @crtc, true otherwise. | |
317 | */ | |
318 | static bool drm_encoder_crtc_ok(struct drm_encoder *encoder, | |
319 | struct drm_crtc *crtc) | |
320 | { | |
321 | struct drm_device *dev; | |
322 | struct drm_crtc *tmp; | |
323 | int crtc_mask = 1; | |
324 | ||
fce7d61b | 325 | WARN(!crtc, "checking null crtc?\n"); |
7bec756c JB |
326 | |
327 | dev = crtc->dev; | |
328 | ||
329 | list_for_each_entry(tmp, &dev->mode_config.crtc_list, head) { | |
330 | if (tmp == crtc) | |
331 | break; | |
332 | crtc_mask <<= 1; | |
333 | } | |
334 | ||
335 | if (encoder->possible_crtcs & crtc_mask) | |
336 | return true; | |
337 | return false; | |
338 | } | |
339 | ||
340 | /* | |
341 | * Check the CRTC we're going to map each output to vs. its current | |
342 | * CRTC. If they don't match, we have to disable the output and the CRTC | |
343 | * since the driver will have to re-route things. | |
344 | */ | |
345 | static void | |
346 | drm_crtc_prepare_encoders(struct drm_device *dev) | |
347 | { | |
348 | struct drm_encoder_helper_funcs *encoder_funcs; | |
349 | struct drm_encoder *encoder; | |
350 | ||
351 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
352 | encoder_funcs = encoder->helper_private; | |
353 | /* Disable unused encoders */ | |
354 | if (encoder->crtc == NULL) | |
86a1b9d1 | 355 | drm_encoder_disable(encoder); |
7bec756c JB |
356 | /* Disable encoders whose CRTC is about to change */ |
357 | if (encoder_funcs->get_crtc && | |
358 | encoder->crtc != (*encoder_funcs->get_crtc)(encoder)) | |
86a1b9d1 | 359 | drm_encoder_disable(encoder); |
7bec756c JB |
360 | } |
361 | } | |
362 | ||
f453ba04 | 363 | /** |
0d4ed4c8 | 364 | * drm_crtc_helper_set_mode - internal helper to set a mode |
f453ba04 DA |
365 | * @crtc: CRTC to program |
366 | * @mode: mode to use | |
4c9287c6 AD |
367 | * @x: horizontal offset into the surface |
368 | * @y: vertical offset into the surface | |
0d4ed4c8 | 369 | * @old_fb: old framebuffer, for cleanup |
f453ba04 DA |
370 | * |
371 | * LOCKING: | |
372 | * Caller must hold mode config lock. | |
373 | * | |
374 | * Try to set @mode on @crtc. Give @crtc and its associated connectors a chance | |
0d4ed4c8 DV |
375 | * to fixup or reject the mode prior to trying to set it. This is an internal |
376 | * helper that drivers could e.g. use to update properties that require the | |
377 | * entire output pipe to be disabled and re-enabled in a new configuration. For | |
378 | * example for changing whether audio is enabled on a hdmi link or for changing | |
379 | * panel fitter or dither attributes. It is also called by the | |
380 | * drm_crtc_helper_set_config() helper function to drive the mode setting | |
381 | * sequence. | |
f453ba04 DA |
382 | * |
383 | * RETURNS: | |
384 | * True if the mode was set successfully, or false otherwise. | |
385 | */ | |
386 | bool drm_crtc_helper_set_mode(struct drm_crtc *crtc, | |
387 | struct drm_display_mode *mode, | |
3c4fdcfb KH |
388 | int x, int y, |
389 | struct drm_framebuffer *old_fb) | |
f453ba04 DA |
390 | { |
391 | struct drm_device *dev = crtc->dev; | |
27641c3f | 392 | struct drm_display_mode *adjusted_mode, saved_mode, saved_hwmode; |
f453ba04 DA |
393 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
394 | struct drm_encoder_helper_funcs *encoder_funcs; | |
395 | int saved_x, saved_y; | |
396 | struct drm_encoder *encoder; | |
397 | bool ret = true; | |
398 | ||
f453ba04 | 399 | crtc->enabled = drm_helper_crtc_in_use(crtc); |
f453ba04 DA |
400 | if (!crtc->enabled) |
401 | return true; | |
402 | ||
021a8455 | 403 | adjusted_mode = drm_mode_duplicate(dev, mode); |
6bfc56aa VS |
404 | if (!adjusted_mode) |
405 | return false; | |
021a8455 | 406 | |
27641c3f | 407 | saved_hwmode = crtc->hwmode; |
f453ba04 DA |
408 | saved_mode = crtc->mode; |
409 | saved_x = crtc->x; | |
410 | saved_y = crtc->y; | |
411 | ||
412 | /* Update crtc values up front so the driver can rely on them for mode | |
413 | * setting. | |
414 | */ | |
415 | crtc->mode = *mode; | |
416 | crtc->x = x; | |
417 | crtc->y = y; | |
418 | ||
f453ba04 DA |
419 | /* Pass our mode to the connectors and the CRTC to give them a chance to |
420 | * adjust it according to limitations or connector properties, and also | |
421 | * a chance to reject the mode entirely. | |
422 | */ | |
423 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
424 | ||
425 | if (encoder->crtc != crtc) | |
426 | continue; | |
427 | encoder_funcs = encoder->helper_private; | |
428 | if (!(ret = encoder_funcs->mode_fixup(encoder, mode, | |
429 | adjusted_mode))) { | |
836e53d7 | 430 | DRM_DEBUG_KMS("Encoder fixup failed\n"); |
f453ba04 DA |
431 | goto done; |
432 | } | |
433 | } | |
434 | ||
435 | if (!(ret = crtc_funcs->mode_fixup(crtc, mode, adjusted_mode))) { | |
836e53d7 | 436 | DRM_DEBUG_KMS("CRTC fixup failed\n"); |
f453ba04 DA |
437 | goto done; |
438 | } | |
9440106b | 439 | DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id); |
f453ba04 DA |
440 | |
441 | /* Prepare the encoders and CRTCs before setting the mode. */ | |
442 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
443 | ||
444 | if (encoder->crtc != crtc) | |
445 | continue; | |
446 | encoder_funcs = encoder->helper_private; | |
447 | /* Disable the encoders as the first thing we do. */ | |
448 | encoder_funcs->prepare(encoder); | |
449 | } | |
450 | ||
7bec756c JB |
451 | drm_crtc_prepare_encoders(dev); |
452 | ||
f453ba04 DA |
453 | crtc_funcs->prepare(crtc); |
454 | ||
455 | /* Set up the DPLL and any encoders state that needs to adjust or depend | |
456 | * on the DPLL. | |
457 | */ | |
5c3b82e2 CW |
458 | ret = !crtc_funcs->mode_set(crtc, mode, adjusted_mode, x, y, old_fb); |
459 | if (!ret) | |
460 | goto done; | |
f453ba04 DA |
461 | |
462 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
463 | ||
464 | if (encoder->crtc != crtc) | |
465 | continue; | |
466 | ||
9440106b JG |
467 | DRM_DEBUG_KMS("[ENCODER:%d:%s] set [MODE:%d:%s]\n", |
468 | encoder->base.id, drm_get_encoder_name(encoder), | |
469 | mode->base.id, mode->name); | |
f453ba04 DA |
470 | encoder_funcs = encoder->helper_private; |
471 | encoder_funcs->mode_set(encoder, mode, adjusted_mode); | |
472 | } | |
473 | ||
474 | /* Now enable the clocks, plane, pipe, and connectors that we set up. */ | |
475 | crtc_funcs->commit(crtc); | |
476 | ||
477 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
478 | ||
479 | if (encoder->crtc != crtc) | |
480 | continue; | |
481 | ||
482 | encoder_funcs = encoder->helper_private; | |
483 | encoder_funcs->commit(encoder); | |
484 | ||
485 | } | |
486 | ||
27641c3f MK |
487 | /* Store real post-adjustment hardware mode. */ |
488 | crtc->hwmode = *adjusted_mode; | |
489 | ||
490 | /* Calculate and store various constants which | |
491 | * are later needed by vblank and swap-completion | |
492 | * timestamping. They are derived from true hwmode. | |
493 | */ | |
494 | drm_calc_timestamping_constants(crtc); | |
495 | ||
f453ba04 DA |
496 | /* FIXME: add subpixel order */ |
497 | done: | |
021a8455 | 498 | drm_mode_destroy(dev, adjusted_mode); |
f453ba04 | 499 | if (!ret) { |
27641c3f | 500 | crtc->hwmode = saved_hwmode; |
f453ba04 DA |
501 | crtc->mode = saved_mode; |
502 | crtc->x = saved_x; | |
503 | crtc->y = saved_y; | |
504 | } | |
505 | ||
506 | return ret; | |
507 | } | |
508 | EXPORT_SYMBOL(drm_crtc_helper_set_mode); | |
509 | ||
510 | ||
6eebd6bb CW |
511 | static int |
512 | drm_crtc_helper_disable(struct drm_crtc *crtc) | |
513 | { | |
514 | struct drm_device *dev = crtc->dev; | |
515 | struct drm_connector *connector; | |
516 | struct drm_encoder *encoder; | |
517 | ||
518 | /* Decouple all encoders and their attached connectors from this crtc */ | |
519 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
520 | if (encoder->crtc != crtc) | |
521 | continue; | |
522 | ||
523 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
524 | if (connector->encoder != encoder) | |
525 | continue; | |
526 | ||
527 | connector->encoder = NULL; | |
528 | } | |
529 | } | |
530 | ||
531 | drm_helper_disable_unused_functions(dev); | |
532 | return 0; | |
533 | } | |
534 | ||
f453ba04 DA |
535 | /** |
536 | * drm_crtc_helper_set_config - set a new config from userspace | |
0d4ed4c8 | 537 | * @set: mode set configuration |
f453ba04 DA |
538 | * |
539 | * LOCKING: | |
540 | * Caller must hold mode config lock. | |
541 | * | |
0d4ed4c8 DV |
542 | * Setup a new configuration, provided by the upper layers (either an ioctl call |
543 | * from userspace or internally e.g. from the fbdev suppport code) in @set, and | |
544 | * enable it. This is the main helper functions for drivers that implement | |
545 | * kernel mode setting with the crtc helper functions and the assorted | |
546 | * ->prepare(), ->modeset() and ->commit() helper callbacks. | |
f453ba04 DA |
547 | * |
548 | * RETURNS: | |
0d4ed4c8 | 549 | * Returns 0 on success, -ERRNO on failure. |
f453ba04 DA |
550 | */ |
551 | int drm_crtc_helper_set_config(struct drm_mode_set *set) | |
552 | { | |
553 | struct drm_device *dev; | |
e67aae79 MM |
554 | struct drm_crtc *save_crtcs, *new_crtc, *crtc; |
555 | struct drm_encoder *save_encoders, *new_encoder, *encoder; | |
7bec756c | 556 | struct drm_framebuffer *old_fb = NULL; |
4cb72b17 JB |
557 | bool mode_changed = false; /* if true do a full mode set */ |
558 | bool fb_changed = false; /* if true and !mode_changed just do a flip */ | |
e67aae79 | 559 | struct drm_connector *save_connectors, *connector; |
f453ba04 DA |
560 | int count = 0, ro, fail = 0; |
561 | struct drm_crtc_helper_funcs *crtc_funcs; | |
c5006cfe | 562 | struct drm_mode_set save_set; |
4a1b0714 | 563 | int ret; |
bf9dc102 | 564 | int i; |
f453ba04 | 565 | |
58367ed6 | 566 | DRM_DEBUG_KMS("\n"); |
f453ba04 | 567 | |
e58de880 DV |
568 | BUG_ON(!set); |
569 | BUG_ON(!set->crtc); | |
570 | BUG_ON(!set->crtc->helper_private); | |
f453ba04 | 571 | |
e58de880 DV |
572 | /* Enforce sane interface api - has been abused by the fb helper. */ |
573 | BUG_ON(!set->mode && set->fb); | |
574 | BUG_ON(set->fb && set->num_connectors == 0); | |
f453ba04 DA |
575 | |
576 | crtc_funcs = set->crtc->helper_private; | |
577 | ||
ede3ff52 CW |
578 | if (!set->mode) |
579 | set->fb = NULL; | |
580 | ||
9440106b JG |
581 | if (set->fb) { |
582 | DRM_DEBUG_KMS("[CRTC:%d] [FB:%d] #connectors=%d (x y) (%i %i)\n", | |
583 | set->crtc->base.id, set->fb->base.id, | |
584 | (int)set->num_connectors, set->x, set->y); | |
585 | } else { | |
ede3ff52 | 586 | DRM_DEBUG_KMS("[CRTC:%d] [NOFB]\n", set->crtc->base.id); |
6eebd6bb | 587 | return drm_crtc_helper_disable(set->crtc); |
9440106b | 588 | } |
f453ba04 DA |
589 | |
590 | dev = set->crtc->dev; | |
591 | ||
e67aae79 MM |
592 | /* Allocate space for the backup of all (non-pointer) crtc, encoder and |
593 | * connector data. */ | |
594 | save_crtcs = kzalloc(dev->mode_config.num_crtc * | |
595 | sizeof(struct drm_crtc), GFP_KERNEL); | |
f453ba04 DA |
596 | if (!save_crtcs) |
597 | return -ENOMEM; | |
598 | ||
e67aae79 MM |
599 | save_encoders = kzalloc(dev->mode_config.num_encoder * |
600 | sizeof(struct drm_encoder), GFP_KERNEL); | |
f453ba04 DA |
601 | if (!save_encoders) { |
602 | kfree(save_crtcs); | |
603 | return -ENOMEM; | |
604 | } | |
605 | ||
e67aae79 MM |
606 | save_connectors = kzalloc(dev->mode_config.num_connector * |
607 | sizeof(struct drm_connector), GFP_KERNEL); | |
608 | if (!save_connectors) { | |
609 | kfree(save_crtcs); | |
610 | kfree(save_encoders); | |
611 | return -ENOMEM; | |
612 | } | |
613 | ||
614 | /* Copy data. Note that driver private data is not affected. | |
615 | * Should anything bad happen only the expected state is | |
616 | * restored, not the drivers personal bookkeeping. | |
617 | */ | |
618 | count = 0; | |
619 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
620 | save_crtcs[count++] = *crtc; | |
621 | } | |
622 | ||
623 | count = 0; | |
624 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
625 | save_encoders[count++] = *encoder; | |
626 | } | |
627 | ||
628 | count = 0; | |
629 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
630 | save_connectors[count++] = *connector; | |
631 | } | |
632 | ||
c5006cfe JB |
633 | save_set.crtc = set->crtc; |
634 | save_set.mode = &set->crtc->mode; | |
635 | save_set.x = set->crtc->x; | |
636 | save_set.y = set->crtc->y; | |
637 | save_set.fb = set->crtc->fb; | |
638 | ||
f453ba04 DA |
639 | /* We should be able to check here if the fb has the same properties |
640 | * and then just flip_or_move it */ | |
641 | if (set->crtc->fb != set->fb) { | |
712531bf | 642 | /* If we have no fb then treat it as a full mode set */ |
7bec756c | 643 | if (set->crtc->fb == NULL) { |
58367ed6 | 644 | DRM_DEBUG_KMS("crtc has no fb, full mode set\n"); |
712531bf | 645 | mode_changed = true; |
4cb72b17 JB |
646 | } else if (set->fb == NULL) { |
647 | mode_changed = true; | |
46e48456 JB |
648 | } else if (set->fb->depth != set->crtc->fb->depth) { |
649 | mode_changed = true; | |
650 | } else if (set->fb->bits_per_pixel != | |
651 | set->crtc->fb->bits_per_pixel) { | |
652 | mode_changed = true; | |
ce83adf7 LP |
653 | } else if (set->fb->pixel_format != |
654 | set->crtc->fb->pixel_format) { | |
655 | mode_changed = true; | |
8dff4742 | 656 | } else |
712531bf | 657 | fb_changed = true; |
f453ba04 DA |
658 | } |
659 | ||
660 | if (set->x != set->crtc->x || set->y != set->crtc->y) | |
712531bf | 661 | fb_changed = true; |
f453ba04 DA |
662 | |
663 | if (set->mode && !drm_mode_equal(set->mode, &set->crtc->mode)) { | |
58367ed6 | 664 | DRM_DEBUG_KMS("modes are different, full mode set\n"); |
f453ba04 DA |
665 | drm_mode_debug_printmodeline(&set->crtc->mode); |
666 | drm_mode_debug_printmodeline(set->mode); | |
712531bf | 667 | mode_changed = true; |
f453ba04 DA |
668 | } |
669 | ||
670 | /* a) traverse passed in connector list and get encoders for them */ | |
671 | count = 0; | |
672 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
673 | struct drm_connector_helper_funcs *connector_funcs = | |
674 | connector->helper_private; | |
f453ba04 DA |
675 | new_encoder = connector->encoder; |
676 | for (ro = 0; ro < set->num_connectors; ro++) { | |
677 | if (set->connectors[ro] == connector) { | |
678 | new_encoder = connector_funcs->best_encoder(connector); | |
679 | /* if we can't get an encoder for a connector | |
680 | we are setting now - then fail */ | |
681 | if (new_encoder == NULL) | |
682 | /* don't break so fail path works correct */ | |
683 | fail = 1; | |
684 | break; | |
685 | } | |
686 | } | |
687 | ||
688 | if (new_encoder != connector->encoder) { | |
58367ed6 | 689 | DRM_DEBUG_KMS("encoder changed, full mode switch\n"); |
712531bf | 690 | mode_changed = true; |
ff846ab7 MM |
691 | /* If the encoder is reused for another connector, then |
692 | * the appropriate crtc will be set later. | |
693 | */ | |
ff6fdbed MM |
694 | if (connector->encoder) |
695 | connector->encoder->crtc = NULL; | |
f453ba04 DA |
696 | connector->encoder = new_encoder; |
697 | } | |
698 | } | |
699 | ||
700 | if (fail) { | |
701 | ret = -EINVAL; | |
e67aae79 | 702 | goto fail; |
f453ba04 DA |
703 | } |
704 | ||
705 | count = 0; | |
706 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
707 | if (!connector->encoder) | |
708 | continue; | |
709 | ||
f453ba04 DA |
710 | if (connector->encoder->crtc == set->crtc) |
711 | new_crtc = NULL; | |
712 | else | |
713 | new_crtc = connector->encoder->crtc; | |
714 | ||
715 | for (ro = 0; ro < set->num_connectors; ro++) { | |
716 | if (set->connectors[ro] == connector) | |
717 | new_crtc = set->crtc; | |
718 | } | |
7bec756c JB |
719 | |
720 | /* Make sure the new CRTC will work with the encoder */ | |
721 | if (new_crtc && | |
722 | !drm_encoder_crtc_ok(connector->encoder, new_crtc)) { | |
723 | ret = -EINVAL; | |
e67aae79 | 724 | goto fail; |
7bec756c | 725 | } |
f453ba04 | 726 | if (new_crtc != connector->encoder->crtc) { |
58367ed6 | 727 | DRM_DEBUG_KMS("crtc changed, full mode switch\n"); |
712531bf | 728 | mode_changed = true; |
f453ba04 DA |
729 | connector->encoder->crtc = new_crtc; |
730 | } | |
9440106b JG |
731 | if (new_crtc) { |
732 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] to [CRTC:%d]\n", | |
733 | connector->base.id, drm_get_connector_name(connector), | |
734 | new_crtc->base.id); | |
735 | } else { | |
736 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] to [NOCRTC]\n", | |
737 | connector->base.id, drm_get_connector_name(connector)); | |
738 | } | |
f453ba04 DA |
739 | } |
740 | ||
741 | /* mode_set_base is not a required function */ | |
712531bf JB |
742 | if (fb_changed && !crtc_funcs->mode_set_base) |
743 | mode_changed = true; | |
f453ba04 | 744 | |
712531bf | 745 | if (mode_changed) { |
9334ef75 CW |
746 | set->crtc->enabled = drm_helper_crtc_in_use(set->crtc); |
747 | if (set->crtc->enabled) { | |
58367ed6 ZY |
748 | DRM_DEBUG_KMS("attempting to set mode from" |
749 | " userspace\n"); | |
f453ba04 | 750 | drm_mode_debug_printmodeline(set->mode); |
356ad3cd CW |
751 | old_fb = set->crtc->fb; |
752 | set->crtc->fb = set->fb; | |
f453ba04 | 753 | if (!drm_crtc_helper_set_mode(set->crtc, set->mode, |
3c4fdcfb KH |
754 | set->x, set->y, |
755 | old_fb)) { | |
9440106b JG |
756 | DRM_ERROR("failed to set mode on [CRTC:%d]\n", |
757 | set->crtc->base.id); | |
0ba41e44 | 758 | set->crtc->fb = old_fb; |
f453ba04 | 759 | ret = -EINVAL; |
e67aae79 | 760 | goto fail; |
f453ba04 | 761 | } |
811aaa55 KP |
762 | DRM_DEBUG_KMS("Setting connector DPMS state to on\n"); |
763 | for (i = 0; i < set->num_connectors; i++) { | |
764 | DRM_DEBUG_KMS("\t[CONNECTOR:%d:%s] set DPMS on\n", set->connectors[i]->base.id, | |
765 | drm_get_connector_name(set->connectors[i])); | |
c7548837 | 766 | set->connectors[i]->funcs->dpms(set->connectors[i], DRM_MODE_DPMS_ON); |
811aaa55 | 767 | } |
f453ba04 DA |
768 | } |
769 | drm_helper_disable_unused_functions(dev); | |
712531bf | 770 | } else if (fb_changed) { |
9b1596af BS |
771 | set->crtc->x = set->x; |
772 | set->crtc->y = set->y; | |
773 | ||
3c4fdcfb | 774 | old_fb = set->crtc->fb; |
f453ba04 DA |
775 | if (set->crtc->fb != set->fb) |
776 | set->crtc->fb = set->fb; | |
5c3b82e2 CW |
777 | ret = crtc_funcs->mode_set_base(set->crtc, |
778 | set->x, set->y, old_fb); | |
0ba41e44 CW |
779 | if (ret != 0) { |
780 | set->crtc->fb = old_fb; | |
e67aae79 | 781 | goto fail; |
0ba41e44 | 782 | } |
f453ba04 DA |
783 | } |
784 | ||
e67aae79 | 785 | kfree(save_connectors); |
f453ba04 DA |
786 | kfree(save_encoders); |
787 | kfree(save_crtcs); | |
788 | return 0; | |
789 | ||
e67aae79 MM |
790 | fail: |
791 | /* Restore all previous data. */ | |
f453ba04 | 792 | count = 0; |
e67aae79 MM |
793 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
794 | *crtc = save_crtcs[count++]; | |
795 | } | |
e62fb64e | 796 | |
e67aae79 MM |
797 | count = 0; |
798 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
799 | *encoder = save_encoders[count++]; | |
e62fb64e | 800 | } |
e67aae79 | 801 | |
f453ba04 DA |
802 | count = 0; |
803 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
e67aae79 | 804 | *connector = save_connectors[count++]; |
f453ba04 | 805 | } |
e67aae79 | 806 | |
c5006cfe JB |
807 | /* Try to restore the config */ |
808 | if (mode_changed && | |
809 | !drm_crtc_helper_set_mode(save_set.crtc, save_set.mode, save_set.x, | |
810 | save_set.y, save_set.fb)) | |
811 | DRM_ERROR("failed to restore config after modeset failure\n"); | |
812 | ||
e67aae79 | 813 | kfree(save_connectors); |
f453ba04 | 814 | kfree(save_encoders); |
e67aae79 | 815 | kfree(save_crtcs); |
f453ba04 DA |
816 | return ret; |
817 | } | |
818 | EXPORT_SYMBOL(drm_crtc_helper_set_config); | |
819 | ||
c9fb15f6 KP |
820 | static int drm_helper_choose_encoder_dpms(struct drm_encoder *encoder) |
821 | { | |
822 | int dpms = DRM_MODE_DPMS_OFF; | |
823 | struct drm_connector *connector; | |
824 | struct drm_device *dev = encoder->dev; | |
825 | ||
826 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) | |
827 | if (connector->encoder == encoder) | |
828 | if (connector->dpms < dpms) | |
829 | dpms = connector->dpms; | |
830 | return dpms; | |
831 | } | |
832 | ||
833 | static int drm_helper_choose_crtc_dpms(struct drm_crtc *crtc) | |
834 | { | |
835 | int dpms = DRM_MODE_DPMS_OFF; | |
836 | struct drm_connector *connector; | |
837 | struct drm_device *dev = crtc->dev; | |
838 | ||
839 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) | |
840 | if (connector->encoder && connector->encoder->crtc == crtc) | |
841 | if (connector->dpms < dpms) | |
842 | dpms = connector->dpms; | |
843 | return dpms; | |
844 | } | |
845 | ||
846 | /** | |
0d4ed4c8 DV |
847 | * drm_helper_connector_dpms() - connector dpms helper implementation |
848 | * @connector: affected connector | |
849 | * @mode: DPMS mode | |
c9fb15f6 | 850 | * |
0d4ed4c8 DV |
851 | * This is the main helper function provided by the crtc helper framework for |
852 | * implementing the DPMS connector attribute. It computes the new desired DPMS | |
853 | * state for all encoders and crtcs in the output mesh and calls the ->dpms() | |
854 | * callback provided by the driver appropriately. | |
c9fb15f6 KP |
855 | */ |
856 | void drm_helper_connector_dpms(struct drm_connector *connector, int mode) | |
857 | { | |
858 | struct drm_encoder *encoder = connector->encoder; | |
859 | struct drm_crtc *crtc = encoder ? encoder->crtc : NULL; | |
860 | int old_dpms; | |
861 | ||
862 | if (mode == connector->dpms) | |
863 | return; | |
864 | ||
865 | old_dpms = connector->dpms; | |
866 | connector->dpms = mode; | |
867 | ||
868 | /* from off to on, do crtc then encoder */ | |
869 | if (mode < old_dpms) { | |
870 | if (crtc) { | |
871 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; | |
872 | if (crtc_funcs->dpms) | |
873 | (*crtc_funcs->dpms) (crtc, | |
874 | drm_helper_choose_crtc_dpms(crtc)); | |
875 | } | |
876 | if (encoder) { | |
877 | struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; | |
878 | if (encoder_funcs->dpms) | |
879 | (*encoder_funcs->dpms) (encoder, | |
880 | drm_helper_choose_encoder_dpms(encoder)); | |
881 | } | |
882 | } | |
883 | ||
884 | /* from on to off, do encoder then crtc */ | |
885 | if (mode > old_dpms) { | |
886 | if (encoder) { | |
887 | struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; | |
888 | if (encoder_funcs->dpms) | |
889 | (*encoder_funcs->dpms) (encoder, | |
890 | drm_helper_choose_encoder_dpms(encoder)); | |
891 | } | |
892 | if (crtc) { | |
893 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; | |
894 | if (crtc_funcs->dpms) | |
895 | (*crtc_funcs->dpms) (crtc, | |
896 | drm_helper_choose_crtc_dpms(crtc)); | |
897 | } | |
898 | } | |
899 | ||
900 | return; | |
901 | } | |
902 | EXPORT_SYMBOL(drm_helper_connector_dpms); | |
903 | ||
f453ba04 | 904 | int drm_helper_mode_fill_fb_struct(struct drm_framebuffer *fb, |
308e5bcb | 905 | struct drm_mode_fb_cmd2 *mode_cmd) |
f453ba04 | 906 | { |
01f2c773 VS |
907 | int i; |
908 | ||
f453ba04 DA |
909 | fb->width = mode_cmd->width; |
910 | fb->height = mode_cmd->height; | |
01f2c773 VS |
911 | for (i = 0; i < 4; i++) { |
912 | fb->pitches[i] = mode_cmd->pitches[i]; | |
913 | fb->offsets[i] = mode_cmd->offsets[i]; | |
914 | } | |
248dbc23 | 915 | drm_fb_get_bpp_depth(mode_cmd->pixel_format, &fb->depth, |
308e5bcb JB |
916 | &fb->bits_per_pixel); |
917 | fb->pixel_format = mode_cmd->pixel_format; | |
f453ba04 DA |
918 | |
919 | return 0; | |
920 | } | |
921 | EXPORT_SYMBOL(drm_helper_mode_fill_fb_struct); | |
922 | ||
923 | int drm_helper_resume_force_mode(struct drm_device *dev) | |
924 | { | |
925 | struct drm_crtc *crtc; | |
89347bb8 DJ |
926 | struct drm_encoder *encoder; |
927 | struct drm_encoder_helper_funcs *encoder_funcs; | |
928 | struct drm_crtc_helper_funcs *crtc_funcs; | |
f453ba04 DA |
929 | int ret; |
930 | ||
931 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
932 | ||
933 | if (!crtc->enabled) | |
934 | continue; | |
935 | ||
3c4fdcfb KH |
936 | ret = drm_crtc_helper_set_mode(crtc, &crtc->mode, |
937 | crtc->x, crtc->y, crtc->fb); | |
f453ba04 DA |
938 | |
939 | if (ret == false) | |
940 | DRM_ERROR("failed to set mode on crtc %p\n", crtc); | |
89347bb8 DJ |
941 | |
942 | /* Turn off outputs that were already powered off */ | |
943 | if (drm_helper_choose_crtc_dpms(crtc)) { | |
944 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
945 | ||
946 | if(encoder->crtc != crtc) | |
947 | continue; | |
948 | ||
949 | encoder_funcs = encoder->helper_private; | |
950 | if (encoder_funcs->dpms) | |
951 | (*encoder_funcs->dpms) (encoder, | |
952 | drm_helper_choose_encoder_dpms(encoder)); | |
89347bb8 | 953 | } |
817e631e CW |
954 | |
955 | crtc_funcs = crtc->helper_private; | |
956 | if (crtc_funcs->dpms) | |
957 | (*crtc_funcs->dpms) (crtc, | |
958 | drm_helper_choose_crtc_dpms(crtc)); | |
89347bb8 | 959 | } |
f453ba04 | 960 | } |
af4fcb57 ZY |
961 | /* disable the unused connectors while restoring the modesetting */ |
962 | drm_helper_disable_unused_functions(dev); | |
f453ba04 DA |
963 | return 0; |
964 | } | |
965 | EXPORT_SYMBOL(drm_helper_resume_force_mode); | |
eb1f8e4f | 966 | |
3d3683f0 DV |
967 | void drm_kms_helper_hotplug_event(struct drm_device *dev) |
968 | { | |
969 | /* send a uevent + call fbdev */ | |
970 | drm_sysfs_hotplug_event(dev); | |
971 | if (dev->mode_config.funcs->output_poll_changed) | |
972 | dev->mode_config.funcs->output_poll_changed(dev); | |
973 | } | |
974 | EXPORT_SYMBOL(drm_kms_helper_hotplug_event); | |
975 | ||
eb1f8e4f | 976 | #define DRM_OUTPUT_POLL_PERIOD (10*HZ) |
991ea75c | 977 | static void output_poll_execute(struct work_struct *work) |
eb1f8e4f | 978 | { |
991ea75c TH |
979 | struct delayed_work *delayed_work = to_delayed_work(work); |
980 | struct drm_device *dev = container_of(delayed_work, struct drm_device, mode_config.output_poll_work); | |
eb1f8e4f | 981 | struct drm_connector *connector; |
c5027dec | 982 | enum drm_connector_status old_status; |
eb1f8e4f | 983 | bool repoll = false, changed = false; |
eb1f8e4f | 984 | |
e58f637b CW |
985 | if (!drm_kms_helper_poll) |
986 | return; | |
987 | ||
eb1f8e4f DA |
988 | mutex_lock(&dev->mode_config.mutex); |
989 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
990 | ||
11e68685 DV |
991 | /* Ignore forced connectors. */ |
992 | if (connector->force) | |
993 | continue; | |
994 | ||
816da85a DV |
995 | /* Ignore HPD capable connectors and connectors where we don't |
996 | * want any hotplug detection at all for polling. */ | |
997 | if (!connector->polled || connector->polled == DRM_CONNECTOR_POLL_HPD) | |
eb1f8e4f DA |
998 | continue; |
999 | ||
a4f968d8 | 1000 | repoll = true; |
eb1f8e4f DA |
1001 | |
1002 | old_status = connector->status; | |
1003 | /* if we are connected and don't want to poll for disconnect | |
1004 | skip it */ | |
1005 | if (old_status == connector_status_connected && | |
816da85a | 1006 | !(connector->polled & DRM_CONNECTOR_POLL_DISCONNECT)) |
eb1f8e4f DA |
1007 | continue; |
1008 | ||
c5027dec | 1009 | connector->status = connector->funcs->detect(connector, false); |
b2dfcae3 LD |
1010 | if (old_status != connector->status) { |
1011 | const char *old, *new; | |
1012 | ||
1013 | old = drm_get_connector_status_name(old_status); | |
1014 | new = drm_get_connector_status_name(connector->status); | |
1015 | ||
1016 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] " | |
1017 | "status updated from %s to %s\n", | |
1018 | connector->base.id, | |
1019 | drm_get_connector_name(connector), | |
1020 | old, new); | |
1021 | ||
eb1f8e4f | 1022 | changed = true; |
b2dfcae3 | 1023 | } |
eb1f8e4f DA |
1024 | } |
1025 | ||
1026 | mutex_unlock(&dev->mode_config.mutex); | |
1027 | ||
3d3683f0 DV |
1028 | if (changed) |
1029 | drm_kms_helper_hotplug_event(dev); | |
eb1f8e4f | 1030 | |
9a919c46 | 1031 | if (repoll) |
3b07e9ca | 1032 | schedule_delayed_work(delayed_work, DRM_OUTPUT_POLL_PERIOD); |
eb1f8e4f DA |
1033 | } |
1034 | ||
fbf81762 DA |
1035 | void drm_kms_helper_poll_disable(struct drm_device *dev) |
1036 | { | |
1037 | if (!dev->mode_config.poll_enabled) | |
1038 | return; | |
991ea75c | 1039 | cancel_delayed_work_sync(&dev->mode_config.output_poll_work); |
fbf81762 DA |
1040 | } |
1041 | EXPORT_SYMBOL(drm_kms_helper_poll_disable); | |
1042 | ||
1043 | void drm_kms_helper_poll_enable(struct drm_device *dev) | |
eb1f8e4f | 1044 | { |
eb1f8e4f | 1045 | bool poll = false; |
fbf81762 | 1046 | struct drm_connector *connector; |
eb1f8e4f | 1047 | |
e58f637b CW |
1048 | if (!dev->mode_config.poll_enabled || !drm_kms_helper_poll) |
1049 | return; | |
1050 | ||
eb1f8e4f | 1051 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
a4f968d8 DV |
1052 | if (connector->polled & (DRM_CONNECTOR_POLL_CONNECT | |
1053 | DRM_CONNECTOR_POLL_DISCONNECT)) | |
eb1f8e4f DA |
1054 | poll = true; |
1055 | } | |
eb1f8e4f | 1056 | |
9a919c46 | 1057 | if (poll) |
3b07e9ca | 1058 | schedule_delayed_work(&dev->mode_config.output_poll_work, DRM_OUTPUT_POLL_PERIOD); |
eb1f8e4f | 1059 | } |
fbf81762 DA |
1060 | EXPORT_SYMBOL(drm_kms_helper_poll_enable); |
1061 | ||
1062 | void drm_kms_helper_poll_init(struct drm_device *dev) | |
1063 | { | |
991ea75c | 1064 | INIT_DELAYED_WORK(&dev->mode_config.output_poll_work, output_poll_execute); |
fbf81762 DA |
1065 | dev->mode_config.poll_enabled = true; |
1066 | ||
1067 | drm_kms_helper_poll_enable(dev); | |
1068 | } | |
eb1f8e4f DA |
1069 | EXPORT_SYMBOL(drm_kms_helper_poll_init); |
1070 | ||
1071 | void drm_kms_helper_poll_fini(struct drm_device *dev) | |
1072 | { | |
fbf81762 | 1073 | drm_kms_helper_poll_disable(dev); |
eb1f8e4f DA |
1074 | } |
1075 | EXPORT_SYMBOL(drm_kms_helper_poll_fini); | |
1076 | ||
69787f7d | 1077 | void drm_helper_hpd_irq_event(struct drm_device *dev) |
eb1f8e4f | 1078 | { |
816da85a DV |
1079 | struct drm_connector *connector; |
1080 | enum drm_connector_status old_status; | |
1081 | bool changed = false; | |
1082 | ||
eb1f8e4f DA |
1083 | if (!dev->mode_config.poll_enabled) |
1084 | return; | |
e58f637b | 1085 | |
816da85a DV |
1086 | mutex_lock(&dev->mode_config.mutex); |
1087 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
1088 | ||
1089 | /* Only handle HPD capable connectors. */ | |
1090 | if (!(connector->polled & DRM_CONNECTOR_POLL_HPD)) | |
1091 | continue; | |
1092 | ||
1093 | old_status = connector->status; | |
1094 | ||
1095 | connector->status = connector->funcs->detect(connector, false); | |
ed7951dc | 1096 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] status updated from %s to %s\n", |
816da85a DV |
1097 | connector->base.id, |
1098 | drm_get_connector_name(connector), | |
ed7951dc LD |
1099 | drm_get_connector_status_name(old_status), |
1100 | drm_get_connector_status_name(connector->status)); | |
816da85a DV |
1101 | if (old_status != connector->status) |
1102 | changed = true; | |
1103 | } | |
1104 | ||
1105 | mutex_unlock(&dev->mode_config.mutex); | |
1106 | ||
1107 | if (changed) | |
1108 | drm_kms_helper_hotplug_event(dev); | |
1109 | } | |
eb1f8e4f | 1110 | EXPORT_SYMBOL(drm_helper_hpd_irq_event); |