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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 | |
92b6f89f DV |
42 | MODULE_AUTHOR("David Airlie, Jesse Barnes"); |
43 | MODULE_DESCRIPTION("DRM KMS helper"); | |
44 | MODULE_LICENSE("GPL and additional rights"); | |
45 | ||
0d4ed4c8 DV |
46 | /** |
47 | * drm_helper_move_panel_connectors_to_head() - move panels to the front in the | |
48 | * connector list | |
49 | * @dev: drm device to operate on | |
50 | * | |
51 | * Some userspace presumes that the first connected connector is the main | |
52 | * display, where it's supposed to display e.g. the login screen. For | |
53 | * laptops, this should be the main panel. Use this function to sort all | |
54 | * (eDP/LVDS) panels to the front of the connector list, instead of | |
55 | * painstakingly trying to initialize them in the right order. | |
56 | */ | |
cfc1a062 DV |
57 | void drm_helper_move_panel_connectors_to_head(struct drm_device *dev) |
58 | { | |
59 | struct drm_connector *connector, *tmp; | |
60 | struct list_head panel_list; | |
61 | ||
62 | INIT_LIST_HEAD(&panel_list); | |
63 | ||
64 | list_for_each_entry_safe(connector, tmp, | |
65 | &dev->mode_config.connector_list, head) { | |
66 | if (connector->connector_type == DRM_MODE_CONNECTOR_LVDS || | |
67 | connector->connector_type == DRM_MODE_CONNECTOR_eDP) | |
68 | list_move_tail(&connector->head, &panel_list); | |
69 | } | |
70 | ||
71 | list_splice(&panel_list, &dev->mode_config.connector_list); | |
72 | } | |
73 | EXPORT_SYMBOL(drm_helper_move_panel_connectors_to_head); | |
74 | ||
e58f637b CW |
75 | static bool drm_kms_helper_poll = true; |
76 | module_param_named(poll, drm_kms_helper_poll, bool, 0600); | |
77 | ||
6714977b | 78 | static void drm_mode_validate_flag(struct drm_connector *connector, |
79 | int flags) | |
80 | { | |
a1178ca0 | 81 | struct drm_display_mode *mode; |
6714977b | 82 | |
560a067a DL |
83 | if (flags == (DRM_MODE_FLAG_DBLSCAN | DRM_MODE_FLAG_INTERLACE | |
84 | DRM_MODE_FLAG_3D_MASK)) | |
6714977b | 85 | return; |
86 | ||
a1178ca0 | 87 | list_for_each_entry(mode, &connector->modes, head) { |
6714977b | 88 | if ((mode->flags & DRM_MODE_FLAG_INTERLACE) && |
89 | !(flags & DRM_MODE_FLAG_INTERLACE)) | |
90 | mode->status = MODE_NO_INTERLACE; | |
91 | if ((mode->flags & DRM_MODE_FLAG_DBLSCAN) && | |
92 | !(flags & DRM_MODE_FLAG_DBLSCAN)) | |
93 | mode->status = MODE_NO_DBLESCAN; | |
560a067a DL |
94 | if ((mode->flags & DRM_MODE_FLAG_3D_MASK) && |
95 | !(flags & DRM_MODE_FLAG_3D_MASK)) | |
96 | mode->status = MODE_NO_STEREO; | |
6714977b | 97 | } |
98 | ||
99 | return; | |
100 | } | |
101 | ||
f453ba04 | 102 | /** |
38651674 | 103 | * drm_helper_probe_single_connector_modes - get complete set of display modes |
0d4ed4c8 | 104 | * @connector: connector to probe |
f453ba04 DA |
105 | * @maxX: max width for modes |
106 | * @maxY: max height for modes | |
107 | * | |
108 | * LOCKING: | |
109 | * Caller must hold mode config lock. | |
110 | * | |
0d4ed4c8 DV |
111 | * Based on the helper callbacks implemented by @connector try to detect all |
112 | * valid modes. Modes will first be added to the connector's probed_modes list, | |
113 | * then culled (based on validity and the @maxX, @maxY parameters) and put into | |
114 | * the normal modes list. | |
f453ba04 | 115 | * |
1eee814d LD |
116 | * Intended to be use as a generic implementation of the ->fill_modes() |
117 | * @connector vfunc for drivers that use the crtc helpers for output mode | |
118 | * filtering and detection. | |
40a518d9 JB |
119 | * |
120 | * RETURNS: | |
121 | * Number of modes found on @connector. | |
f453ba04 | 122 | */ |
40a518d9 JB |
123 | int drm_helper_probe_single_connector_modes(struct drm_connector *connector, |
124 | uint32_t maxX, uint32_t maxY) | |
f453ba04 DA |
125 | { |
126 | struct drm_device *dev = connector->dev; | |
a1178ca0 | 127 | struct drm_display_mode *mode; |
f453ba04 DA |
128 | struct drm_connector_helper_funcs *connector_funcs = |
129 | connector->helper_private; | |
40a518d9 | 130 | int count = 0; |
6714977b | 131 | int mode_flags = 0; |
ebbd97ad | 132 | bool verbose_prune = true; |
f453ba04 | 133 | |
9440106b JG |
134 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", connector->base.id, |
135 | drm_get_connector_name(connector)); | |
f453ba04 | 136 | /* set all modes to the unverified state */ |
a1178ca0 | 137 | list_for_each_entry(mode, &connector->modes, head) |
f453ba04 DA |
138 | mode->status = MODE_UNVERIFIED; |
139 | ||
d50ba256 DA |
140 | if (connector->force) { |
141 | if (connector->force == DRM_FORCE_ON) | |
142 | connector->status = connector_status_connected; | |
143 | else | |
144 | connector->status = connector_status_disconnected; | |
145 | if (connector->funcs->force) | |
146 | connector->funcs->force(connector); | |
e58f637b | 147 | } else { |
930a9e28 | 148 | connector->status = connector->funcs->detect(connector, true); |
e58f637b | 149 | } |
f453ba04 | 150 | |
905bc9ff DV |
151 | /* Re-enable polling in case the global poll config changed. */ |
152 | if (drm_kms_helper_poll != dev->mode_config.poll_running) | |
153 | drm_kms_helper_poll_enable(dev); | |
154 | ||
155 | dev->mode_config.poll_running = drm_kms_helper_poll; | |
156 | ||
f453ba04 | 157 | if (connector->status == connector_status_disconnected) { |
9440106b JG |
158 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] disconnected\n", |
159 | connector->base.id, drm_get_connector_name(connector)); | |
72539832 | 160 | drm_mode_connector_update_edid_property(connector, NULL); |
ebbd97ad | 161 | verbose_prune = false; |
620f3781 | 162 | goto prune; |
f453ba04 DA |
163 | } |
164 | ||
da0df92b CE |
165 | #ifdef CONFIG_DRM_LOAD_EDID_FIRMWARE |
166 | count = drm_load_edid_firmware(connector); | |
167 | if (count == 0) | |
168 | #endif | |
169 | count = (*connector_funcs->get_modes)(connector); | |
170 | ||
c7ef35a9 | 171 | if (count == 0 && connector->status == connector_status_connected) |
9632b41f | 172 | count = drm_add_modes_noedid(connector, 1024, 768); |
c7ef35a9 CW |
173 | if (count == 0) |
174 | goto prune; | |
f453ba04 | 175 | |
40a518d9 | 176 | drm_mode_connector_list_update(connector); |
f453ba04 DA |
177 | |
178 | if (maxX && maxY) | |
179 | drm_mode_validate_size(dev, &connector->modes, maxX, | |
180 | maxY, 0); | |
6714977b | 181 | |
182 | if (connector->interlace_allowed) | |
183 | mode_flags |= DRM_MODE_FLAG_INTERLACE; | |
184 | if (connector->doublescan_allowed) | |
185 | mode_flags |= DRM_MODE_FLAG_DBLSCAN; | |
560a067a DL |
186 | if (connector->stereo_allowed) |
187 | mode_flags |= DRM_MODE_FLAG_3D_MASK; | |
6714977b | 188 | drm_mode_validate_flag(connector, mode_flags); |
189 | ||
a1178ca0 | 190 | list_for_each_entry(mode, &connector->modes, head) { |
f453ba04 DA |
191 | if (mode->status == MODE_OK) |
192 | mode->status = connector_funcs->mode_valid(connector, | |
193 | mode); | |
194 | } | |
195 | ||
620f3781 | 196 | prune: |
ebbd97ad | 197 | drm_mode_prune_invalid(dev, &connector->modes, verbose_prune); |
f453ba04 | 198 | |
40a518d9 JB |
199 | if (list_empty(&connector->modes)) |
200 | return 0; | |
f453ba04 | 201 | |
9bc3cd56 VS |
202 | list_for_each_entry(mode, &connector->modes, head) |
203 | mode->vrefresh = drm_mode_vrefresh(mode); | |
204 | ||
f453ba04 DA |
205 | drm_mode_sort(&connector->modes); |
206 | ||
9440106b JG |
207 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] probed modes :\n", connector->base.id, |
208 | drm_get_connector_name(connector)); | |
a1178ca0 | 209 | list_for_each_entry(mode, &connector->modes, head) { |
f453ba04 DA |
210 | drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V); |
211 | drm_mode_debug_printmodeline(mode); | |
212 | } | |
40a518d9 JB |
213 | |
214 | return count; | |
f453ba04 DA |
215 | } |
216 | EXPORT_SYMBOL(drm_helper_probe_single_connector_modes); | |
217 | ||
c9fb15f6 KP |
218 | /** |
219 | * drm_helper_encoder_in_use - check if a given encoder is in use | |
220 | * @encoder: encoder to check | |
221 | * | |
222 | * LOCKING: | |
223 | * Caller must hold mode config lock. | |
224 | * | |
225 | * Walk @encoders's DRM device's mode_config and see if it's in use. | |
226 | * | |
227 | * RETURNS: | |
228 | * True if @encoder is part of the mode_config, false otherwise. | |
229 | */ | |
230 | bool drm_helper_encoder_in_use(struct drm_encoder *encoder) | |
231 | { | |
232 | struct drm_connector *connector; | |
233 | struct drm_device *dev = encoder->dev; | |
234 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) | |
235 | if (connector->encoder == encoder) | |
236 | return true; | |
237 | return false; | |
238 | } | |
239 | EXPORT_SYMBOL(drm_helper_encoder_in_use); | |
240 | ||
f453ba04 DA |
241 | /** |
242 | * drm_helper_crtc_in_use - check if a given CRTC is in a mode_config | |
243 | * @crtc: CRTC to check | |
244 | * | |
245 | * LOCKING: | |
246 | * Caller must hold mode config lock. | |
247 | * | |
248 | * Walk @crtc's DRM device's mode_config and see if it's in use. | |
249 | * | |
250 | * RETURNS: | |
251 | * True if @crtc is part of the mode_config, false otherwise. | |
252 | */ | |
253 | bool drm_helper_crtc_in_use(struct drm_crtc *crtc) | |
254 | { | |
255 | struct drm_encoder *encoder; | |
256 | struct drm_device *dev = crtc->dev; | |
257 | /* FIXME: Locking around list access? */ | |
258 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) | |
c9fb15f6 | 259 | if (encoder->crtc == crtc && drm_helper_encoder_in_use(encoder)) |
f453ba04 DA |
260 | return true; |
261 | return false; | |
262 | } | |
263 | EXPORT_SYMBOL(drm_helper_crtc_in_use); | |
264 | ||
86a1b9d1 BS |
265 | static void |
266 | drm_encoder_disable(struct drm_encoder *encoder) | |
267 | { | |
268 | struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; | |
269 | ||
3b336ec4 SP |
270 | if (encoder->bridge) |
271 | encoder->bridge->funcs->disable(encoder->bridge); | |
272 | ||
86a1b9d1 BS |
273 | if (encoder_funcs->disable) |
274 | (*encoder_funcs->disable)(encoder); | |
275 | else | |
276 | (*encoder_funcs->dpms)(encoder, DRM_MODE_DPMS_OFF); | |
3b336ec4 SP |
277 | |
278 | if (encoder->bridge) | |
279 | encoder->bridge->funcs->post_disable(encoder->bridge); | |
86a1b9d1 BS |
280 | } |
281 | ||
f453ba04 | 282 | /** |
89347bb8 | 283 | * drm_helper_disable_unused_functions - disable unused objects |
f453ba04 DA |
284 | * @dev: DRM device |
285 | * | |
286 | * LOCKING: | |
287 | * Caller must hold mode config lock. | |
288 | * | |
289 | * If an connector or CRTC isn't part of @dev's mode_config, it can be disabled | |
290 | * by calling its dpms function, which should power it off. | |
291 | */ | |
292 | void drm_helper_disable_unused_functions(struct drm_device *dev) | |
293 | { | |
294 | struct drm_encoder *encoder; | |
a3a0544b | 295 | struct drm_connector *connector; |
f453ba04 DA |
296 | struct drm_crtc *crtc; |
297 | ||
a3a0544b DA |
298 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
299 | if (!connector->encoder) | |
300 | continue; | |
301 | if (connector->status == connector_status_disconnected) | |
302 | connector->encoder = NULL; | |
303 | } | |
304 | ||
f453ba04 | 305 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
92971021 | 306 | if (!drm_helper_encoder_in_use(encoder)) { |
86a1b9d1 | 307 | drm_encoder_disable(encoder); |
9c552dd7 DA |
308 | /* disconnector encoder from any connector */ |
309 | encoder->crtc = NULL; | |
a3a0544b | 310 | } |
f453ba04 DA |
311 | } |
312 | ||
313 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
314 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; | |
315 | crtc->enabled = drm_helper_crtc_in_use(crtc); | |
316 | if (!crtc->enabled) { | |
5c8d7171 AD |
317 | if (crtc_funcs->disable) |
318 | (*crtc_funcs->disable)(crtc); | |
319 | else | |
320 | (*crtc_funcs->dpms)(crtc, DRM_MODE_DPMS_OFF); | |
f453ba04 DA |
321 | crtc->fb = NULL; |
322 | } | |
323 | } | |
324 | } | |
325 | EXPORT_SYMBOL(drm_helper_disable_unused_functions); | |
326 | ||
7bec756c JB |
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 | 350 | /** |
0d4ed4c8 | 351 | * drm_crtc_helper_set_mode - internal helper to set a mode |
f453ba04 DA |
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 | |
0d4ed4c8 | 356 | * @old_fb: old framebuffer, for cleanup |
f453ba04 DA |
357 | * |
358 | * LOCKING: | |
359 | * Caller must hold mode config lock. | |
360 | * | |
361 | * Try to set @mode on @crtc. Give @crtc and its associated connectors a chance | |
0d4ed4c8 DV |
362 | * to fixup or reject the mode prior to trying to set it. This is an internal |
363 | * helper that drivers could e.g. use to update properties that require the | |
364 | * entire output pipe to be disabled and re-enabled in a new configuration. For | |
365 | * example for changing whether audio is enabled on a hdmi link or for changing | |
366 | * panel fitter or dither attributes. It is also called by the | |
367 | * drm_crtc_helper_set_config() helper function to drive the mode setting | |
368 | * sequence. | |
f453ba04 DA |
369 | * |
370 | * RETURNS: | |
371 | * True if the mode was set successfully, or false otherwise. | |
372 | */ | |
373 | bool drm_crtc_helper_set_mode(struct drm_crtc *crtc, | |
374 | struct drm_display_mode *mode, | |
3c4fdcfb KH |
375 | int x, int y, |
376 | struct drm_framebuffer *old_fb) | |
f453ba04 DA |
377 | { |
378 | struct drm_device *dev = crtc->dev; | |
7e99acdc | 379 | struct drm_display_mode *adjusted_mode, saved_mode; |
f453ba04 DA |
380 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
381 | struct drm_encoder_helper_funcs *encoder_funcs; | |
382 | int saved_x, saved_y; | |
7e99acdc | 383 | bool saved_enabled; |
f453ba04 DA |
384 | struct drm_encoder *encoder; |
385 | bool ret = true; | |
386 | ||
7e99acdc | 387 | saved_enabled = crtc->enabled; |
f453ba04 | 388 | crtc->enabled = drm_helper_crtc_in_use(crtc); |
f453ba04 DA |
389 | if (!crtc->enabled) |
390 | return true; | |
391 | ||
021a8455 | 392 | adjusted_mode = drm_mode_duplicate(dev, mode); |
7e99acdc IH |
393 | if (!adjusted_mode) { |
394 | crtc->enabled = saved_enabled; | |
6bfc56aa | 395 | return false; |
7e99acdc | 396 | } |
021a8455 | 397 | |
f453ba04 DA |
398 | saved_mode = crtc->mode; |
399 | saved_x = crtc->x; | |
400 | saved_y = crtc->y; | |
401 | ||
402 | /* Update crtc values up front so the driver can rely on them for mode | |
403 | * setting. | |
404 | */ | |
405 | crtc->mode = *mode; | |
406 | crtc->x = x; | |
407 | crtc->y = y; | |
408 | ||
f453ba04 DA |
409 | /* Pass our mode to the connectors and the CRTC to give them a chance to |
410 | * adjust it according to limitations or connector properties, and also | |
411 | * a chance to reject the mode entirely. | |
412 | */ | |
413 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
414 | ||
415 | if (encoder->crtc != crtc) | |
416 | continue; | |
3b336ec4 SP |
417 | |
418 | if (encoder->bridge && encoder->bridge->funcs->mode_fixup) { | |
419 | ret = encoder->bridge->funcs->mode_fixup( | |
420 | encoder->bridge, mode, adjusted_mode); | |
421 | if (!ret) { | |
422 | DRM_DEBUG_KMS("Bridge fixup failed\n"); | |
423 | goto done; | |
424 | } | |
425 | } | |
426 | ||
f453ba04 DA |
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; | |
3b336ec4 SP |
446 | |
447 | if (encoder->bridge) | |
448 | encoder->bridge->funcs->disable(encoder->bridge); | |
449 | ||
f453ba04 DA |
450 | encoder_funcs = encoder->helper_private; |
451 | /* Disable the encoders as the first thing we do. */ | |
452 | encoder_funcs->prepare(encoder); | |
3b336ec4 SP |
453 | |
454 | if (encoder->bridge) | |
455 | encoder->bridge->funcs->post_disable(encoder->bridge); | |
f453ba04 DA |
456 | } |
457 | ||
7bec756c JB |
458 | drm_crtc_prepare_encoders(dev); |
459 | ||
f453ba04 DA |
460 | crtc_funcs->prepare(crtc); |
461 | ||
462 | /* Set up the DPLL and any encoders state that needs to adjust or depend | |
463 | * on the DPLL. | |
464 | */ | |
5c3b82e2 CW |
465 | ret = !crtc_funcs->mode_set(crtc, mode, adjusted_mode, x, y, old_fb); |
466 | if (!ret) | |
467 | goto done; | |
f453ba04 DA |
468 | |
469 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
470 | ||
471 | if (encoder->crtc != crtc) | |
472 | continue; | |
473 | ||
9440106b JG |
474 | DRM_DEBUG_KMS("[ENCODER:%d:%s] set [MODE:%d:%s]\n", |
475 | encoder->base.id, drm_get_encoder_name(encoder), | |
476 | mode->base.id, mode->name); | |
f453ba04 DA |
477 | encoder_funcs = encoder->helper_private; |
478 | encoder_funcs->mode_set(encoder, mode, adjusted_mode); | |
3b336ec4 SP |
479 | |
480 | if (encoder->bridge && encoder->bridge->funcs->mode_set) | |
481 | encoder->bridge->funcs->mode_set(encoder->bridge, mode, | |
482 | adjusted_mode); | |
f453ba04 DA |
483 | } |
484 | ||
485 | /* Now enable the clocks, plane, pipe, and connectors that we set up. */ | |
486 | crtc_funcs->commit(crtc); | |
487 | ||
488 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
489 | ||
490 | if (encoder->crtc != crtc) | |
491 | continue; | |
492 | ||
3b336ec4 SP |
493 | if (encoder->bridge) |
494 | encoder->bridge->funcs->pre_enable(encoder->bridge); | |
495 | ||
f453ba04 DA |
496 | encoder_funcs = encoder->helper_private; |
497 | encoder_funcs->commit(encoder); | |
498 | ||
3b336ec4 SP |
499 | if (encoder->bridge) |
500 | encoder->bridge->funcs->enable(encoder->bridge); | |
f453ba04 DA |
501 | } |
502 | ||
27641c3f MK |
503 | /* Store real post-adjustment hardware mode. */ |
504 | crtc->hwmode = *adjusted_mode; | |
505 | ||
506 | /* Calculate and store various constants which | |
507 | * are later needed by vblank and swap-completion | |
508 | * timestamping. They are derived from true hwmode. | |
509 | */ | |
545cdd55 | 510 | drm_calc_timestamping_constants(crtc, &crtc->hwmode); |
27641c3f | 511 | |
f453ba04 DA |
512 | /* FIXME: add subpixel order */ |
513 | done: | |
021a8455 | 514 | drm_mode_destroy(dev, adjusted_mode); |
f453ba04 | 515 | if (!ret) { |
7e99acdc | 516 | crtc->enabled = saved_enabled; |
f453ba04 DA |
517 | crtc->mode = saved_mode; |
518 | crtc->x = saved_x; | |
519 | crtc->y = saved_y; | |
520 | } | |
521 | ||
522 | return ret; | |
523 | } | |
524 | EXPORT_SYMBOL(drm_crtc_helper_set_mode); | |
525 | ||
526 | ||
6eebd6bb CW |
527 | static int |
528 | drm_crtc_helper_disable(struct drm_crtc *crtc) | |
529 | { | |
530 | struct drm_device *dev = crtc->dev; | |
531 | struct drm_connector *connector; | |
532 | struct drm_encoder *encoder; | |
533 | ||
534 | /* Decouple all encoders and their attached connectors from this crtc */ | |
535 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
536 | if (encoder->crtc != crtc) | |
537 | continue; | |
538 | ||
539 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
540 | if (connector->encoder != encoder) | |
541 | continue; | |
542 | ||
543 | connector->encoder = NULL; | |
a6ad6230 TR |
544 | |
545 | /* | |
546 | * drm_helper_disable_unused_functions() ought to be | |
547 | * doing this, but since we've decoupled the encoder | |
548 | * from the connector above, the required connection | |
549 | * between them is henceforth no longer available. | |
550 | */ | |
551 | connector->dpms = DRM_MODE_DPMS_OFF; | |
6eebd6bb CW |
552 | } |
553 | } | |
554 | ||
555 | drm_helper_disable_unused_functions(dev); | |
556 | return 0; | |
557 | } | |
558 | ||
f453ba04 DA |
559 | /** |
560 | * drm_crtc_helper_set_config - set a new config from userspace | |
0d4ed4c8 | 561 | * @set: mode set configuration |
f453ba04 DA |
562 | * |
563 | * LOCKING: | |
564 | * Caller must hold mode config lock. | |
565 | * | |
0d4ed4c8 DV |
566 | * Setup a new configuration, provided by the upper layers (either an ioctl call |
567 | * from userspace or internally e.g. from the fbdev suppport code) in @set, and | |
568 | * enable it. This is the main helper functions for drivers that implement | |
569 | * kernel mode setting with the crtc helper functions and the assorted | |
570 | * ->prepare(), ->modeset() and ->commit() helper callbacks. | |
f453ba04 DA |
571 | * |
572 | * RETURNS: | |
0d4ed4c8 | 573 | * Returns 0 on success, -ERRNO on failure. |
f453ba04 DA |
574 | */ |
575 | int drm_crtc_helper_set_config(struct drm_mode_set *set) | |
576 | { | |
577 | struct drm_device *dev; | |
02ee4e94 | 578 | struct drm_crtc *new_crtc; |
e67aae79 | 579 | struct drm_encoder *save_encoders, *new_encoder, *encoder; |
4cb72b17 JB |
580 | bool mode_changed = false; /* if true do a full mode set */ |
581 | bool fb_changed = false; /* if true and !mode_changed just do a flip */ | |
e67aae79 | 582 | struct drm_connector *save_connectors, *connector; |
f453ba04 DA |
583 | int count = 0, ro, fail = 0; |
584 | struct drm_crtc_helper_funcs *crtc_funcs; | |
c5006cfe | 585 | struct drm_mode_set save_set; |
4a1b0714 | 586 | int ret; |
bf9dc102 | 587 | int i; |
f453ba04 | 588 | |
58367ed6 | 589 | DRM_DEBUG_KMS("\n"); |
f453ba04 | 590 | |
e58de880 DV |
591 | BUG_ON(!set); |
592 | BUG_ON(!set->crtc); | |
593 | BUG_ON(!set->crtc->helper_private); | |
f453ba04 | 594 | |
e58de880 DV |
595 | /* Enforce sane interface api - has been abused by the fb helper. */ |
596 | BUG_ON(!set->mode && set->fb); | |
597 | BUG_ON(set->fb && set->num_connectors == 0); | |
f453ba04 DA |
598 | |
599 | crtc_funcs = set->crtc->helper_private; | |
600 | ||
ede3ff52 CW |
601 | if (!set->mode) |
602 | set->fb = NULL; | |
603 | ||
9440106b JG |
604 | if (set->fb) { |
605 | DRM_DEBUG_KMS("[CRTC:%d] [FB:%d] #connectors=%d (x y) (%i %i)\n", | |
606 | set->crtc->base.id, set->fb->base.id, | |
607 | (int)set->num_connectors, set->x, set->y); | |
608 | } else { | |
ede3ff52 | 609 | DRM_DEBUG_KMS("[CRTC:%d] [NOFB]\n", set->crtc->base.id); |
6eebd6bb | 610 | return drm_crtc_helper_disable(set->crtc); |
9440106b | 611 | } |
f453ba04 DA |
612 | |
613 | dev = set->crtc->dev; | |
614 | ||
02ee4e94 IH |
615 | /* |
616 | * Allocate space for the backup of all (non-pointer) encoder and | |
617 | * connector data. | |
618 | */ | |
e67aae79 MM |
619 | save_encoders = kzalloc(dev->mode_config.num_encoder * |
620 | sizeof(struct drm_encoder), GFP_KERNEL); | |
02ee4e94 | 621 | if (!save_encoders) |
f453ba04 | 622 | return -ENOMEM; |
f453ba04 | 623 | |
e67aae79 MM |
624 | save_connectors = kzalloc(dev->mode_config.num_connector * |
625 | sizeof(struct drm_connector), GFP_KERNEL); | |
626 | if (!save_connectors) { | |
e67aae79 MM |
627 | kfree(save_encoders); |
628 | return -ENOMEM; | |
629 | } | |
630 | ||
02ee4e94 IH |
631 | /* |
632 | * Copy data. Note that driver private data is not affected. | |
e67aae79 MM |
633 | * Should anything bad happen only the expected state is |
634 | * restored, not the drivers personal bookkeeping. | |
635 | */ | |
e67aae79 MM |
636 | count = 0; |
637 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
638 | save_encoders[count++] = *encoder; | |
639 | } | |
640 | ||
641 | count = 0; | |
642 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
643 | save_connectors[count++] = *connector; | |
644 | } | |
645 | ||
c5006cfe JB |
646 | save_set.crtc = set->crtc; |
647 | save_set.mode = &set->crtc->mode; | |
648 | save_set.x = set->crtc->x; | |
649 | save_set.y = set->crtc->y; | |
650 | save_set.fb = set->crtc->fb; | |
651 | ||
f453ba04 DA |
652 | /* We should be able to check here if the fb has the same properties |
653 | * and then just flip_or_move it */ | |
654 | if (set->crtc->fb != set->fb) { | |
712531bf | 655 | /* If we have no fb then treat it as a full mode set */ |
7bec756c | 656 | if (set->crtc->fb == NULL) { |
58367ed6 | 657 | DRM_DEBUG_KMS("crtc has no fb, full mode set\n"); |
712531bf | 658 | mode_changed = true; |
4cb72b17 JB |
659 | } else if (set->fb == NULL) { |
660 | mode_changed = true; | |
ce83adf7 LP |
661 | } else if (set->fb->pixel_format != |
662 | set->crtc->fb->pixel_format) { | |
663 | mode_changed = true; | |
8dff4742 | 664 | } else |
712531bf | 665 | fb_changed = true; |
f453ba04 DA |
666 | } |
667 | ||
668 | if (set->x != set->crtc->x || set->y != set->crtc->y) | |
712531bf | 669 | fb_changed = true; |
f453ba04 DA |
670 | |
671 | if (set->mode && !drm_mode_equal(set->mode, &set->crtc->mode)) { | |
58367ed6 | 672 | DRM_DEBUG_KMS("modes are different, full mode set\n"); |
f453ba04 DA |
673 | drm_mode_debug_printmodeline(&set->crtc->mode); |
674 | drm_mode_debug_printmodeline(set->mode); | |
712531bf | 675 | mode_changed = true; |
f453ba04 DA |
676 | } |
677 | ||
678 | /* a) traverse passed in connector list and get encoders for them */ | |
679 | count = 0; | |
680 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
681 | struct drm_connector_helper_funcs *connector_funcs = | |
682 | connector->helper_private; | |
f453ba04 DA |
683 | new_encoder = connector->encoder; |
684 | for (ro = 0; ro < set->num_connectors; ro++) { | |
685 | if (set->connectors[ro] == connector) { | |
686 | new_encoder = connector_funcs->best_encoder(connector); | |
687 | /* if we can't get an encoder for a connector | |
688 | we are setting now - then fail */ | |
689 | if (new_encoder == NULL) | |
690 | /* don't break so fail path works correct */ | |
691 | fail = 1; | |
692 | break; | |
25f397a4 DV |
693 | |
694 | if (connector->dpms != DRM_MODE_DPMS_ON) { | |
695 | DRM_DEBUG_KMS("connector dpms not on, full mode switch\n"); | |
696 | mode_changed = true; | |
697 | } | |
f453ba04 DA |
698 | } |
699 | } | |
700 | ||
701 | if (new_encoder != connector->encoder) { | |
58367ed6 | 702 | DRM_DEBUG_KMS("encoder changed, full mode switch\n"); |
712531bf | 703 | mode_changed = true; |
ff846ab7 MM |
704 | /* If the encoder is reused for another connector, then |
705 | * the appropriate crtc will be set later. | |
706 | */ | |
ff6fdbed MM |
707 | if (connector->encoder) |
708 | connector->encoder->crtc = NULL; | |
f453ba04 DA |
709 | connector->encoder = new_encoder; |
710 | } | |
711 | } | |
712 | ||
713 | if (fail) { | |
714 | ret = -EINVAL; | |
e67aae79 | 715 | goto fail; |
f453ba04 DA |
716 | } |
717 | ||
718 | count = 0; | |
719 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
720 | if (!connector->encoder) | |
721 | continue; | |
722 | ||
f453ba04 DA |
723 | if (connector->encoder->crtc == set->crtc) |
724 | new_crtc = NULL; | |
725 | else | |
726 | new_crtc = connector->encoder->crtc; | |
727 | ||
728 | for (ro = 0; ro < set->num_connectors; ro++) { | |
729 | if (set->connectors[ro] == connector) | |
730 | new_crtc = set->crtc; | |
731 | } | |
7bec756c JB |
732 | |
733 | /* Make sure the new CRTC will work with the encoder */ | |
734 | if (new_crtc && | |
735 | !drm_encoder_crtc_ok(connector->encoder, new_crtc)) { | |
736 | ret = -EINVAL; | |
e67aae79 | 737 | goto fail; |
7bec756c | 738 | } |
f453ba04 | 739 | if (new_crtc != connector->encoder->crtc) { |
58367ed6 | 740 | DRM_DEBUG_KMS("crtc changed, full mode switch\n"); |
712531bf | 741 | mode_changed = true; |
f453ba04 DA |
742 | connector->encoder->crtc = new_crtc; |
743 | } | |
9440106b JG |
744 | if (new_crtc) { |
745 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] to [CRTC:%d]\n", | |
746 | connector->base.id, drm_get_connector_name(connector), | |
747 | new_crtc->base.id); | |
748 | } else { | |
749 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] to [NOCRTC]\n", | |
750 | connector->base.id, drm_get_connector_name(connector)); | |
751 | } | |
f453ba04 DA |
752 | } |
753 | ||
754 | /* mode_set_base is not a required function */ | |
712531bf JB |
755 | if (fb_changed && !crtc_funcs->mode_set_base) |
756 | mode_changed = true; | |
f453ba04 | 757 | |
712531bf | 758 | if (mode_changed) { |
48b1f5dd | 759 | if (drm_helper_crtc_in_use(set->crtc)) { |
58367ed6 ZY |
760 | DRM_DEBUG_KMS("attempting to set mode from" |
761 | " userspace\n"); | |
f453ba04 | 762 | drm_mode_debug_printmodeline(set->mode); |
356ad3cd | 763 | set->crtc->fb = set->fb; |
f453ba04 | 764 | if (!drm_crtc_helper_set_mode(set->crtc, set->mode, |
3c4fdcfb | 765 | set->x, set->y, |
bec2eac3 | 766 | save_set.fb)) { |
9440106b JG |
767 | DRM_ERROR("failed to set mode on [CRTC:%d]\n", |
768 | set->crtc->base.id); | |
bec2eac3 | 769 | set->crtc->fb = save_set.fb; |
f453ba04 | 770 | ret = -EINVAL; |
e67aae79 | 771 | goto fail; |
f453ba04 | 772 | } |
25f397a4 DV |
773 | DRM_DEBUG_KMS("Setting connector DPMS state to on\n"); |
774 | for (i = 0; i < set->num_connectors; i++) { | |
775 | DRM_DEBUG_KMS("\t[CONNECTOR:%d:%s] set DPMS on\n", set->connectors[i]->base.id, | |
776 | drm_get_connector_name(set->connectors[i])); | |
777 | set->connectors[i]->funcs->dpms(set->connectors[i], DRM_MODE_DPMS_ON); | |
778 | } | |
f453ba04 DA |
779 | } |
780 | drm_helper_disable_unused_functions(dev); | |
712531bf | 781 | } else if (fb_changed) { |
9b1596af BS |
782 | set->crtc->x = set->x; |
783 | set->crtc->y = set->y; | |
fc50a890 | 784 | set->crtc->fb = set->fb; |
5c3b82e2 | 785 | ret = crtc_funcs->mode_set_base(set->crtc, |
bec2eac3 | 786 | set->x, set->y, save_set.fb); |
0ba41e44 | 787 | if (ret != 0) { |
fbce4064 IH |
788 | set->crtc->x = save_set.x; |
789 | set->crtc->y = save_set.y; | |
bec2eac3 | 790 | set->crtc->fb = save_set.fb; |
e67aae79 | 791 | goto fail; |
0ba41e44 | 792 | } |
f453ba04 DA |
793 | } |
794 | ||
e67aae79 | 795 | kfree(save_connectors); |
f453ba04 | 796 | kfree(save_encoders); |
f453ba04 DA |
797 | return 0; |
798 | ||
e67aae79 MM |
799 | fail: |
800 | /* Restore all previous data. */ | |
e67aae79 MM |
801 | count = 0; |
802 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
803 | *encoder = save_encoders[count++]; | |
e62fb64e | 804 | } |
e67aae79 | 805 | |
f453ba04 DA |
806 | count = 0; |
807 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
e67aae79 | 808 | *connector = save_connectors[count++]; |
f453ba04 | 809 | } |
e67aae79 | 810 | |
c5006cfe JB |
811 | /* Try to restore the config */ |
812 | if (mode_changed && | |
813 | !drm_crtc_helper_set_mode(save_set.crtc, save_set.mode, save_set.x, | |
814 | save_set.y, save_set.fb)) | |
815 | DRM_ERROR("failed to restore config after modeset failure\n"); | |
816 | ||
e67aae79 | 817 | kfree(save_connectors); |
f453ba04 DA |
818 | kfree(save_encoders); |
819 | return ret; | |
820 | } | |
821 | EXPORT_SYMBOL(drm_crtc_helper_set_config); | |
822 | ||
c9fb15f6 KP |
823 | static int drm_helper_choose_encoder_dpms(struct drm_encoder *encoder) |
824 | { | |
825 | int dpms = DRM_MODE_DPMS_OFF; | |
826 | struct drm_connector *connector; | |
827 | struct drm_device *dev = encoder->dev; | |
828 | ||
829 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) | |
830 | if (connector->encoder == encoder) | |
831 | if (connector->dpms < dpms) | |
832 | dpms = connector->dpms; | |
833 | return dpms; | |
834 | } | |
835 | ||
3b336ec4 SP |
836 | /* Helper which handles bridge ordering around encoder dpms */ |
837 | static void drm_helper_encoder_dpms(struct drm_encoder *encoder, int mode) | |
838 | { | |
839 | struct drm_bridge *bridge = encoder->bridge; | |
840 | struct drm_encoder_helper_funcs *encoder_funcs; | |
841 | ||
842 | if (bridge) { | |
843 | if (mode == DRM_MODE_DPMS_ON) | |
844 | bridge->funcs->pre_enable(bridge); | |
845 | else | |
846 | bridge->funcs->disable(bridge); | |
847 | } | |
848 | ||
849 | encoder_funcs = encoder->helper_private; | |
850 | if (encoder_funcs->dpms) | |
851 | encoder_funcs->dpms(encoder, mode); | |
852 | ||
853 | if (bridge) { | |
854 | if (mode == DRM_MODE_DPMS_ON) | |
855 | bridge->funcs->enable(bridge); | |
856 | else | |
857 | bridge->funcs->post_disable(bridge); | |
858 | } | |
859 | } | |
860 | ||
c9fb15f6 KP |
861 | static int drm_helper_choose_crtc_dpms(struct drm_crtc *crtc) |
862 | { | |
863 | int dpms = DRM_MODE_DPMS_OFF; | |
864 | struct drm_connector *connector; | |
865 | struct drm_device *dev = crtc->dev; | |
866 | ||
867 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) | |
868 | if (connector->encoder && connector->encoder->crtc == crtc) | |
869 | if (connector->dpms < dpms) | |
870 | dpms = connector->dpms; | |
871 | return dpms; | |
872 | } | |
873 | ||
874 | /** | |
0d4ed4c8 DV |
875 | * drm_helper_connector_dpms() - connector dpms helper implementation |
876 | * @connector: affected connector | |
877 | * @mode: DPMS mode | |
c9fb15f6 | 878 | * |
0d4ed4c8 DV |
879 | * This is the main helper function provided by the crtc helper framework for |
880 | * implementing the DPMS connector attribute. It computes the new desired DPMS | |
881 | * state for all encoders and crtcs in the output mesh and calls the ->dpms() | |
882 | * callback provided by the driver appropriately. | |
c9fb15f6 KP |
883 | */ |
884 | void drm_helper_connector_dpms(struct drm_connector *connector, int mode) | |
885 | { | |
886 | struct drm_encoder *encoder = connector->encoder; | |
887 | struct drm_crtc *crtc = encoder ? encoder->crtc : NULL; | |
3b336ec4 | 888 | int old_dpms, encoder_dpms = DRM_MODE_DPMS_OFF; |
c9fb15f6 KP |
889 | |
890 | if (mode == connector->dpms) | |
891 | return; | |
892 | ||
893 | old_dpms = connector->dpms; | |
894 | connector->dpms = mode; | |
895 | ||
3b336ec4 SP |
896 | if (encoder) |
897 | encoder_dpms = drm_helper_choose_encoder_dpms(encoder); | |
898 | ||
c9fb15f6 KP |
899 | /* from off to on, do crtc then encoder */ |
900 | if (mode < old_dpms) { | |
901 | if (crtc) { | |
902 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; | |
903 | if (crtc_funcs->dpms) | |
904 | (*crtc_funcs->dpms) (crtc, | |
905 | drm_helper_choose_crtc_dpms(crtc)); | |
906 | } | |
3b336ec4 SP |
907 | if (encoder) |
908 | drm_helper_encoder_dpms(encoder, encoder_dpms); | |
c9fb15f6 KP |
909 | } |
910 | ||
911 | /* from on to off, do encoder then crtc */ | |
912 | if (mode > old_dpms) { | |
3b336ec4 SP |
913 | if (encoder) |
914 | drm_helper_encoder_dpms(encoder, encoder_dpms); | |
c9fb15f6 KP |
915 | if (crtc) { |
916 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; | |
917 | if (crtc_funcs->dpms) | |
918 | (*crtc_funcs->dpms) (crtc, | |
919 | drm_helper_choose_crtc_dpms(crtc)); | |
920 | } | |
921 | } | |
922 | ||
923 | return; | |
924 | } | |
925 | EXPORT_SYMBOL(drm_helper_connector_dpms); | |
926 | ||
f453ba04 | 927 | int drm_helper_mode_fill_fb_struct(struct drm_framebuffer *fb, |
308e5bcb | 928 | struct drm_mode_fb_cmd2 *mode_cmd) |
f453ba04 | 929 | { |
01f2c773 VS |
930 | int i; |
931 | ||
f453ba04 DA |
932 | fb->width = mode_cmd->width; |
933 | fb->height = mode_cmd->height; | |
01f2c773 VS |
934 | for (i = 0; i < 4; i++) { |
935 | fb->pitches[i] = mode_cmd->pitches[i]; | |
936 | fb->offsets[i] = mode_cmd->offsets[i]; | |
937 | } | |
248dbc23 | 938 | drm_fb_get_bpp_depth(mode_cmd->pixel_format, &fb->depth, |
308e5bcb JB |
939 | &fb->bits_per_pixel); |
940 | fb->pixel_format = mode_cmd->pixel_format; | |
f453ba04 DA |
941 | |
942 | return 0; | |
943 | } | |
944 | EXPORT_SYMBOL(drm_helper_mode_fill_fb_struct); | |
945 | ||
aa4cd910 DV |
946 | /** |
947 | * drm_helper_resume_force_mode - force-restore mode setting configuration | |
948 | * @dev: drm_device which should be restored | |
949 | * | |
950 | * Drivers which use the mode setting helpers can use this function to | |
951 | * force-restore the mode setting configuration e.g. on resume or when something | |
952 | * else might have trampled over the hw state (like some overzealous old BIOSen | |
953 | * tended to do). | |
954 | */ | |
f453ba04 DA |
955 | int drm_helper_resume_force_mode(struct drm_device *dev) |
956 | { | |
957 | struct drm_crtc *crtc; | |
89347bb8 | 958 | struct drm_encoder *encoder; |
89347bb8 | 959 | struct drm_crtc_helper_funcs *crtc_funcs; |
3b336ec4 | 960 | int ret, encoder_dpms; |
f453ba04 DA |
961 | |
962 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
963 | ||
964 | if (!crtc->enabled) | |
965 | continue; | |
966 | ||
3c4fdcfb KH |
967 | ret = drm_crtc_helper_set_mode(crtc, &crtc->mode, |
968 | crtc->x, crtc->y, crtc->fb); | |
f453ba04 DA |
969 | |
970 | if (ret == false) | |
971 | DRM_ERROR("failed to set mode on crtc %p\n", crtc); | |
89347bb8 DJ |
972 | |
973 | /* Turn off outputs that were already powered off */ | |
974 | if (drm_helper_choose_crtc_dpms(crtc)) { | |
975 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
976 | ||
977 | if(encoder->crtc != crtc) | |
978 | continue; | |
979 | ||
3b336ec4 SP |
980 | encoder_dpms = drm_helper_choose_encoder_dpms( |
981 | encoder); | |
982 | ||
983 | drm_helper_encoder_dpms(encoder, encoder_dpms); | |
89347bb8 | 984 | } |
817e631e CW |
985 | |
986 | crtc_funcs = crtc->helper_private; | |
987 | if (crtc_funcs->dpms) | |
988 | (*crtc_funcs->dpms) (crtc, | |
989 | drm_helper_choose_crtc_dpms(crtc)); | |
89347bb8 | 990 | } |
f453ba04 | 991 | } |
af4fcb57 ZY |
992 | /* disable the unused connectors while restoring the modesetting */ |
993 | drm_helper_disable_unused_functions(dev); | |
f453ba04 DA |
994 | return 0; |
995 | } | |
996 | EXPORT_SYMBOL(drm_helper_resume_force_mode); | |
eb1f8e4f | 997 | |
3d3683f0 DV |
998 | void drm_kms_helper_hotplug_event(struct drm_device *dev) |
999 | { | |
1000 | /* send a uevent + call fbdev */ | |
1001 | drm_sysfs_hotplug_event(dev); | |
1002 | if (dev->mode_config.funcs->output_poll_changed) | |
1003 | dev->mode_config.funcs->output_poll_changed(dev); | |
1004 | } | |
1005 | EXPORT_SYMBOL(drm_kms_helper_hotplug_event); | |
1006 | ||
eb1f8e4f | 1007 | #define DRM_OUTPUT_POLL_PERIOD (10*HZ) |
991ea75c | 1008 | static void output_poll_execute(struct work_struct *work) |
eb1f8e4f | 1009 | { |
991ea75c TH |
1010 | struct delayed_work *delayed_work = to_delayed_work(work); |
1011 | struct drm_device *dev = container_of(delayed_work, struct drm_device, mode_config.output_poll_work); | |
eb1f8e4f | 1012 | struct drm_connector *connector; |
c5027dec | 1013 | enum drm_connector_status old_status; |
d482e5fa | 1014 | bool repoll = false, changed = false; |
eb1f8e4f | 1015 | |
e58f637b CW |
1016 | if (!drm_kms_helper_poll) |
1017 | return; | |
1018 | ||
eb1f8e4f DA |
1019 | mutex_lock(&dev->mode_config.mutex); |
1020 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
1021 | ||
11e68685 DV |
1022 | /* Ignore forced connectors. */ |
1023 | if (connector->force) | |
1024 | continue; | |
1025 | ||
816da85a DV |
1026 | /* Ignore HPD capable connectors and connectors where we don't |
1027 | * want any hotplug detection at all for polling. */ | |
1028 | if (!connector->polled || connector->polled == DRM_CONNECTOR_POLL_HPD) | |
eb1f8e4f DA |
1029 | continue; |
1030 | ||
a4f968d8 | 1031 | repoll = true; |
eb1f8e4f DA |
1032 | |
1033 | old_status = connector->status; | |
1034 | /* if we are connected and don't want to poll for disconnect | |
1035 | skip it */ | |
1036 | if (old_status == connector_status_connected && | |
816da85a | 1037 | !(connector->polled & DRM_CONNECTOR_POLL_DISCONNECT)) |
eb1f8e4f DA |
1038 | continue; |
1039 | ||
c5027dec | 1040 | connector->status = connector->funcs->detect(connector, false); |
b2dfcae3 LD |
1041 | if (old_status != connector->status) { |
1042 | const char *old, *new; | |
1043 | ||
1044 | old = drm_get_connector_status_name(old_status); | |
1045 | new = drm_get_connector_status_name(connector->status); | |
1046 | ||
1047 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] " | |
1048 | "status updated from %s to %s\n", | |
1049 | connector->base.id, | |
1050 | drm_get_connector_name(connector), | |
1051 | old, new); | |
1052 | ||
eb1f8e4f | 1053 | changed = true; |
b2dfcae3 | 1054 | } |
eb1f8e4f DA |
1055 | } |
1056 | ||
1057 | mutex_unlock(&dev->mode_config.mutex); | |
1058 | ||
3d3683f0 DV |
1059 | if (changed) |
1060 | drm_kms_helper_hotplug_event(dev); | |
eb1f8e4f | 1061 | |
9a919c46 | 1062 | if (repoll) |
3b07e9ca | 1063 | schedule_delayed_work(delayed_work, DRM_OUTPUT_POLL_PERIOD); |
eb1f8e4f DA |
1064 | } |
1065 | ||
fbf81762 DA |
1066 | void drm_kms_helper_poll_disable(struct drm_device *dev) |
1067 | { | |
1068 | if (!dev->mode_config.poll_enabled) | |
1069 | return; | |
991ea75c | 1070 | cancel_delayed_work_sync(&dev->mode_config.output_poll_work); |
fbf81762 DA |
1071 | } |
1072 | EXPORT_SYMBOL(drm_kms_helper_poll_disable); | |
1073 | ||
1074 | void drm_kms_helper_poll_enable(struct drm_device *dev) | |
eb1f8e4f | 1075 | { |
eb1f8e4f | 1076 | bool poll = false; |
fbf81762 | 1077 | struct drm_connector *connector; |
eb1f8e4f | 1078 | |
e58f637b CW |
1079 | if (!dev->mode_config.poll_enabled || !drm_kms_helper_poll) |
1080 | return; | |
1081 | ||
eb1f8e4f | 1082 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
a4f968d8 DV |
1083 | if (connector->polled & (DRM_CONNECTOR_POLL_CONNECT | |
1084 | DRM_CONNECTOR_POLL_DISCONNECT)) | |
eb1f8e4f DA |
1085 | poll = true; |
1086 | } | |
eb1f8e4f | 1087 | |
9a919c46 | 1088 | if (poll) |
3b07e9ca | 1089 | schedule_delayed_work(&dev->mode_config.output_poll_work, DRM_OUTPUT_POLL_PERIOD); |
eb1f8e4f | 1090 | } |
fbf81762 DA |
1091 | EXPORT_SYMBOL(drm_kms_helper_poll_enable); |
1092 | ||
1093 | void drm_kms_helper_poll_init(struct drm_device *dev) | |
1094 | { | |
991ea75c | 1095 | INIT_DELAYED_WORK(&dev->mode_config.output_poll_work, output_poll_execute); |
fbf81762 DA |
1096 | dev->mode_config.poll_enabled = true; |
1097 | ||
1098 | drm_kms_helper_poll_enable(dev); | |
1099 | } | |
eb1f8e4f DA |
1100 | EXPORT_SYMBOL(drm_kms_helper_poll_init); |
1101 | ||
1102 | void drm_kms_helper_poll_fini(struct drm_device *dev) | |
1103 | { | |
fbf81762 | 1104 | drm_kms_helper_poll_disable(dev); |
eb1f8e4f DA |
1105 | } |
1106 | EXPORT_SYMBOL(drm_kms_helper_poll_fini); | |
1107 | ||
b8206d39 | 1108 | bool drm_helper_hpd_irq_event(struct drm_device *dev) |
eb1f8e4f | 1109 | { |
816da85a DV |
1110 | struct drm_connector *connector; |
1111 | enum drm_connector_status old_status; | |
1112 | bool changed = false; | |
1113 | ||
eb1f8e4f | 1114 | if (!dev->mode_config.poll_enabled) |
b8206d39 | 1115 | return false; |
e58f637b | 1116 | |
816da85a DV |
1117 | mutex_lock(&dev->mode_config.mutex); |
1118 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
1119 | ||
1120 | /* Only handle HPD capable connectors. */ | |
1121 | if (!(connector->polled & DRM_CONNECTOR_POLL_HPD)) | |
1122 | continue; | |
1123 | ||
1124 | old_status = connector->status; | |
1125 | ||
1126 | connector->status = connector->funcs->detect(connector, false); | |
ed7951dc | 1127 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] status updated from %s to %s\n", |
816da85a DV |
1128 | connector->base.id, |
1129 | drm_get_connector_name(connector), | |
ed7951dc LD |
1130 | drm_get_connector_status_name(old_status), |
1131 | drm_get_connector_status_name(connector->status)); | |
816da85a DV |
1132 | if (old_status != connector->status) |
1133 | changed = true; | |
1134 | } | |
1135 | ||
1136 | mutex_unlock(&dev->mode_config.mutex); | |
1137 | ||
1138 | if (changed) | |
1139 | drm_kms_helper_hotplug_event(dev); | |
b8206d39 MAL |
1140 | |
1141 | return changed; | |
816da85a | 1142 | } |
eb1f8e4f | 1143 | EXPORT_SYMBOL(drm_helper_hpd_irq_event); |