Commit | Line | Data |
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f453ba04 DA |
1 | /* |
2 | * Copyright (c) 2006-2008 Intel Corporation | |
3 | * Copyright (c) 2007 Dave Airlie <airlied@linux.ie> | |
4 | * | |
5 | * DRM core CRTC related functions | |
6 | * | |
7 | * Permission to use, copy, modify, distribute, and sell this software and its | |
8 | * documentation for any purpose is hereby granted without fee, provided that | |
9 | * the above copyright notice appear in all copies and that both that copyright | |
10 | * notice and this permission notice appear in supporting documentation, and | |
11 | * that the name of the copyright holders not be used in advertising or | |
12 | * publicity pertaining to distribution of the software without specific, | |
13 | * written prior permission. The copyright holders make no representations | |
14 | * about the suitability of this software for any purpose. It is provided "as | |
15 | * is" without express or implied warranty. | |
16 | * | |
17 | * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, | |
18 | * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO | |
19 | * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR | |
20 | * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, | |
21 | * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER | |
22 | * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE | |
23 | * OF THIS SOFTWARE. | |
24 | * | |
25 | * Authors: | |
26 | * Keith Packard | |
27 | * Eric Anholt <eric@anholt.net> | |
28 | * Dave Airlie <airlied@linux.ie> | |
29 | * Jesse Barnes <jesse.barnes@intel.com> | |
30 | */ | |
31 | ||
2d1a8a48 | 32 | #include <linux/export.h> |
0603ba14 | 33 | #include <linux/moduleparam.h> |
2d1a8a48 | 34 | |
760285e7 DH |
35 | #include <drm/drmP.h> |
36 | #include <drm/drm_crtc.h> | |
37 | #include <drm/drm_fourcc.h> | |
38 | #include <drm/drm_crtc_helper.h> | |
39 | #include <drm/drm_fb_helper.h> | |
40 | #include <drm/drm_edid.h> | |
f453ba04 | 41 | |
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 | * | |
0d4ed4c8 DV |
108 | * Based on the helper callbacks implemented by @connector try to detect all |
109 | * valid modes. Modes will first be added to the connector's probed_modes list, | |
110 | * then culled (based on validity and the @maxX, @maxY parameters) and put into | |
111 | * the normal modes list. | |
f453ba04 | 112 | * |
1eee814d LD |
113 | * Intended to be use as a generic implementation of the ->fill_modes() |
114 | * @connector vfunc for drivers that use the crtc helpers for output mode | |
115 | * filtering and detection. | |
40a518d9 JB |
116 | * |
117 | * RETURNS: | |
118 | * Number of modes found on @connector. | |
f453ba04 | 119 | */ |
40a518d9 JB |
120 | int drm_helper_probe_single_connector_modes(struct drm_connector *connector, |
121 | uint32_t maxX, uint32_t maxY) | |
f453ba04 DA |
122 | { |
123 | struct drm_device *dev = connector->dev; | |
a1178ca0 | 124 | struct drm_display_mode *mode; |
f453ba04 DA |
125 | struct drm_connector_helper_funcs *connector_funcs = |
126 | connector->helper_private; | |
40a518d9 | 127 | int count = 0; |
6714977b | 128 | int mode_flags = 0; |
ebbd97ad | 129 | bool verbose_prune = true; |
f453ba04 | 130 | |
62ff94a5 DV |
131 | WARN_ON(!mutex_is_locked(&dev->mode_config.mutex)); |
132 | ||
9440106b JG |
133 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", connector->base.id, |
134 | drm_get_connector_name(connector)); | |
f453ba04 | 135 | /* set all modes to the unverified state */ |
a1178ca0 | 136 | list_for_each_entry(mode, &connector->modes, head) |
f453ba04 DA |
137 | mode->status = MODE_UNVERIFIED; |
138 | ||
d50ba256 DA |
139 | if (connector->force) { |
140 | if (connector->force == DRM_FORCE_ON) | |
141 | connector->status = connector_status_connected; | |
142 | else | |
143 | connector->status = connector_status_disconnected; | |
144 | if (connector->funcs->force) | |
145 | connector->funcs->force(connector); | |
e58f637b | 146 | } else { |
930a9e28 | 147 | connector->status = connector->funcs->detect(connector, true); |
e58f637b | 148 | } |
f453ba04 | 149 | |
905bc9ff DV |
150 | /* Re-enable polling in case the global poll config changed. */ |
151 | if (drm_kms_helper_poll != dev->mode_config.poll_running) | |
152 | drm_kms_helper_poll_enable(dev); | |
153 | ||
154 | dev->mode_config.poll_running = drm_kms_helper_poll; | |
155 | ||
f453ba04 | 156 | if (connector->status == connector_status_disconnected) { |
9440106b JG |
157 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] disconnected\n", |
158 | connector->base.id, drm_get_connector_name(connector)); | |
72539832 | 159 | drm_mode_connector_update_edid_property(connector, NULL); |
ebbd97ad | 160 | verbose_prune = false; |
620f3781 | 161 | goto prune; |
f453ba04 DA |
162 | } |
163 | ||
da0df92b CE |
164 | #ifdef CONFIG_DRM_LOAD_EDID_FIRMWARE |
165 | count = drm_load_edid_firmware(connector); | |
166 | if (count == 0) | |
167 | #endif | |
168 | count = (*connector_funcs->get_modes)(connector); | |
169 | ||
c7ef35a9 | 170 | if (count == 0 && connector->status == connector_status_connected) |
9632b41f | 171 | count = drm_add_modes_noedid(connector, 1024, 768); |
c7ef35a9 CW |
172 | if (count == 0) |
173 | goto prune; | |
f453ba04 | 174 | |
40a518d9 | 175 | drm_mode_connector_list_update(connector); |
f453ba04 DA |
176 | |
177 | if (maxX && maxY) | |
3e70292c | 178 | drm_mode_validate_size(dev, &connector->modes, maxX, maxY); |
6714977b | 179 | |
180 | if (connector->interlace_allowed) | |
181 | mode_flags |= DRM_MODE_FLAG_INTERLACE; | |
182 | if (connector->doublescan_allowed) | |
183 | mode_flags |= DRM_MODE_FLAG_DBLSCAN; | |
560a067a DL |
184 | if (connector->stereo_allowed) |
185 | mode_flags |= DRM_MODE_FLAG_3D_MASK; | |
6714977b | 186 | drm_mode_validate_flag(connector, mode_flags); |
187 | ||
a1178ca0 | 188 | list_for_each_entry(mode, &connector->modes, head) { |
f453ba04 DA |
189 | if (mode->status == MODE_OK) |
190 | mode->status = connector_funcs->mode_valid(connector, | |
191 | mode); | |
192 | } | |
193 | ||
620f3781 | 194 | prune: |
ebbd97ad | 195 | drm_mode_prune_invalid(dev, &connector->modes, verbose_prune); |
f453ba04 | 196 | |
40a518d9 JB |
197 | if (list_empty(&connector->modes)) |
198 | return 0; | |
f453ba04 | 199 | |
9bc3cd56 VS |
200 | list_for_each_entry(mode, &connector->modes, head) |
201 | mode->vrefresh = drm_mode_vrefresh(mode); | |
202 | ||
f453ba04 DA |
203 | drm_mode_sort(&connector->modes); |
204 | ||
9440106b JG |
205 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] probed modes :\n", connector->base.id, |
206 | drm_get_connector_name(connector)); | |
a1178ca0 | 207 | list_for_each_entry(mode, &connector->modes, head) { |
f453ba04 DA |
208 | drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V); |
209 | drm_mode_debug_printmodeline(mode); | |
210 | } | |
40a518d9 JB |
211 | |
212 | return count; | |
f453ba04 DA |
213 | } |
214 | EXPORT_SYMBOL(drm_helper_probe_single_connector_modes); | |
215 | ||
c9fb15f6 KP |
216 | /** |
217 | * drm_helper_encoder_in_use - check if a given encoder is in use | |
218 | * @encoder: encoder to check | |
219 | * | |
c9fb15f6 KP |
220 | * Walk @encoders's DRM device's mode_config and see if it's in use. |
221 | * | |
222 | * RETURNS: | |
223 | * True if @encoder is part of the mode_config, false otherwise. | |
224 | */ | |
225 | bool drm_helper_encoder_in_use(struct drm_encoder *encoder) | |
226 | { | |
227 | struct drm_connector *connector; | |
228 | struct drm_device *dev = encoder->dev; | |
62ff94a5 DV |
229 | |
230 | WARN_ON(!mutex_is_locked(&dev->mode_config.mutex)); | |
c9fb15f6 KP |
231 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) |
232 | if (connector->encoder == encoder) | |
233 | return true; | |
234 | return false; | |
235 | } | |
236 | EXPORT_SYMBOL(drm_helper_encoder_in_use); | |
237 | ||
f453ba04 DA |
238 | /** |
239 | * drm_helper_crtc_in_use - check if a given CRTC is in a mode_config | |
240 | * @crtc: CRTC to check | |
241 | * | |
f453ba04 DA |
242 | * Walk @crtc's DRM device's mode_config and see if it's in use. |
243 | * | |
244 | * RETURNS: | |
245 | * True if @crtc is part of the mode_config, false otherwise. | |
246 | */ | |
247 | bool drm_helper_crtc_in_use(struct drm_crtc *crtc) | |
248 | { | |
249 | struct drm_encoder *encoder; | |
250 | struct drm_device *dev = crtc->dev; | |
62ff94a5 DV |
251 | |
252 | WARN_ON(!mutex_is_locked(&dev->mode_config.mutex)); | |
f453ba04 | 253 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) |
c9fb15f6 | 254 | if (encoder->crtc == crtc && drm_helper_encoder_in_use(encoder)) |
f453ba04 DA |
255 | return true; |
256 | return false; | |
257 | } | |
258 | EXPORT_SYMBOL(drm_helper_crtc_in_use); | |
259 | ||
86a1b9d1 BS |
260 | static void |
261 | drm_encoder_disable(struct drm_encoder *encoder) | |
262 | { | |
263 | struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; | |
264 | ||
3b336ec4 SP |
265 | if (encoder->bridge) |
266 | encoder->bridge->funcs->disable(encoder->bridge); | |
267 | ||
86a1b9d1 BS |
268 | if (encoder_funcs->disable) |
269 | (*encoder_funcs->disable)(encoder); | |
270 | else | |
271 | (*encoder_funcs->dpms)(encoder, DRM_MODE_DPMS_OFF); | |
3b336ec4 SP |
272 | |
273 | if (encoder->bridge) | |
274 | encoder->bridge->funcs->post_disable(encoder->bridge); | |
86a1b9d1 BS |
275 | } |
276 | ||
f453ba04 | 277 | /** |
89347bb8 | 278 | * drm_helper_disable_unused_functions - disable unused objects |
f453ba04 DA |
279 | * @dev: DRM device |
280 | * | |
f453ba04 DA |
281 | * If an connector or CRTC isn't part of @dev's mode_config, it can be disabled |
282 | * by calling its dpms function, which should power it off. | |
283 | */ | |
284 | void drm_helper_disable_unused_functions(struct drm_device *dev) | |
285 | { | |
286 | struct drm_encoder *encoder; | |
a3a0544b | 287 | struct drm_connector *connector; |
f453ba04 DA |
288 | struct drm_crtc *crtc; |
289 | ||
62ff94a5 DV |
290 | drm_warn_on_modeset_not_all_locked(dev); |
291 | ||
a3a0544b DA |
292 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
293 | if (!connector->encoder) | |
294 | continue; | |
295 | if (connector->status == connector_status_disconnected) | |
296 | connector->encoder = NULL; | |
297 | } | |
298 | ||
f453ba04 | 299 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
92971021 | 300 | if (!drm_helper_encoder_in_use(encoder)) { |
86a1b9d1 | 301 | drm_encoder_disable(encoder); |
9c552dd7 DA |
302 | /* disconnector encoder from any connector */ |
303 | encoder->crtc = NULL; | |
a3a0544b | 304 | } |
f453ba04 DA |
305 | } |
306 | ||
307 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
308 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; | |
309 | crtc->enabled = drm_helper_crtc_in_use(crtc); | |
310 | if (!crtc->enabled) { | |
5c8d7171 AD |
311 | if (crtc_funcs->disable) |
312 | (*crtc_funcs->disable)(crtc); | |
313 | else | |
314 | (*crtc_funcs->dpms)(crtc, DRM_MODE_DPMS_OFF); | |
f453ba04 DA |
315 | crtc->fb = NULL; |
316 | } | |
317 | } | |
318 | } | |
319 | EXPORT_SYMBOL(drm_helper_disable_unused_functions); | |
320 | ||
7bec756c JB |
321 | /* |
322 | * Check the CRTC we're going to map each output to vs. its current | |
323 | * CRTC. If they don't match, we have to disable the output and the CRTC | |
324 | * since the driver will have to re-route things. | |
325 | */ | |
326 | static void | |
327 | drm_crtc_prepare_encoders(struct drm_device *dev) | |
328 | { | |
329 | struct drm_encoder_helper_funcs *encoder_funcs; | |
330 | struct drm_encoder *encoder; | |
331 | ||
332 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
333 | encoder_funcs = encoder->helper_private; | |
334 | /* Disable unused encoders */ | |
335 | if (encoder->crtc == NULL) | |
86a1b9d1 | 336 | drm_encoder_disable(encoder); |
7bec756c JB |
337 | /* Disable encoders whose CRTC is about to change */ |
338 | if (encoder_funcs->get_crtc && | |
339 | encoder->crtc != (*encoder_funcs->get_crtc)(encoder)) | |
86a1b9d1 | 340 | drm_encoder_disable(encoder); |
7bec756c JB |
341 | } |
342 | } | |
343 | ||
f453ba04 | 344 | /** |
0d4ed4c8 | 345 | * drm_crtc_helper_set_mode - internal helper to set a mode |
f453ba04 DA |
346 | * @crtc: CRTC to program |
347 | * @mode: mode to use | |
4c9287c6 AD |
348 | * @x: horizontal offset into the surface |
349 | * @y: vertical offset into the surface | |
0d4ed4c8 | 350 | * @old_fb: old framebuffer, for cleanup |
f453ba04 | 351 | * |
f453ba04 | 352 | * Try to set @mode on @crtc. Give @crtc and its associated connectors a chance |
0d4ed4c8 DV |
353 | * to fixup or reject the mode prior to trying to set it. This is an internal |
354 | * helper that drivers could e.g. use to update properties that require the | |
355 | * entire output pipe to be disabled and re-enabled in a new configuration. For | |
356 | * example for changing whether audio is enabled on a hdmi link or for changing | |
357 | * panel fitter or dither attributes. It is also called by the | |
358 | * drm_crtc_helper_set_config() helper function to drive the mode setting | |
359 | * sequence. | |
f453ba04 DA |
360 | * |
361 | * RETURNS: | |
362 | * True if the mode was set successfully, or false otherwise. | |
363 | */ | |
364 | bool drm_crtc_helper_set_mode(struct drm_crtc *crtc, | |
365 | struct drm_display_mode *mode, | |
3c4fdcfb KH |
366 | int x, int y, |
367 | struct drm_framebuffer *old_fb) | |
f453ba04 DA |
368 | { |
369 | struct drm_device *dev = crtc->dev; | |
7e99acdc | 370 | struct drm_display_mode *adjusted_mode, saved_mode; |
f453ba04 DA |
371 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
372 | struct drm_encoder_helper_funcs *encoder_funcs; | |
373 | int saved_x, saved_y; | |
7e99acdc | 374 | bool saved_enabled; |
f453ba04 DA |
375 | struct drm_encoder *encoder; |
376 | bool ret = true; | |
377 | ||
62ff94a5 DV |
378 | drm_warn_on_modeset_not_all_locked(dev); |
379 | ||
7e99acdc | 380 | saved_enabled = crtc->enabled; |
f453ba04 | 381 | crtc->enabled = drm_helper_crtc_in_use(crtc); |
f453ba04 DA |
382 | if (!crtc->enabled) |
383 | return true; | |
384 | ||
021a8455 | 385 | adjusted_mode = drm_mode_duplicate(dev, mode); |
7e99acdc IH |
386 | if (!adjusted_mode) { |
387 | crtc->enabled = saved_enabled; | |
6bfc56aa | 388 | return false; |
7e99acdc | 389 | } |
021a8455 | 390 | |
f453ba04 DA |
391 | saved_mode = crtc->mode; |
392 | saved_x = crtc->x; | |
393 | saved_y = crtc->y; | |
394 | ||
395 | /* Update crtc values up front so the driver can rely on them for mode | |
396 | * setting. | |
397 | */ | |
398 | crtc->mode = *mode; | |
399 | crtc->x = x; | |
400 | crtc->y = y; | |
401 | ||
f453ba04 DA |
402 | /* Pass our mode to the connectors and the CRTC to give them a chance to |
403 | * adjust it according to limitations or connector properties, and also | |
404 | * a chance to reject the mode entirely. | |
405 | */ | |
406 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
407 | ||
408 | if (encoder->crtc != crtc) | |
409 | continue; | |
3b336ec4 SP |
410 | |
411 | if (encoder->bridge && encoder->bridge->funcs->mode_fixup) { | |
412 | ret = encoder->bridge->funcs->mode_fixup( | |
413 | encoder->bridge, mode, adjusted_mode); | |
414 | if (!ret) { | |
415 | DRM_DEBUG_KMS("Bridge fixup failed\n"); | |
416 | goto done; | |
417 | } | |
418 | } | |
419 | ||
f453ba04 DA |
420 | encoder_funcs = encoder->helper_private; |
421 | if (!(ret = encoder_funcs->mode_fixup(encoder, mode, | |
422 | adjusted_mode))) { | |
836e53d7 | 423 | DRM_DEBUG_KMS("Encoder fixup failed\n"); |
f453ba04 DA |
424 | goto done; |
425 | } | |
426 | } | |
427 | ||
428 | if (!(ret = crtc_funcs->mode_fixup(crtc, mode, adjusted_mode))) { | |
836e53d7 | 429 | DRM_DEBUG_KMS("CRTC fixup failed\n"); |
f453ba04 DA |
430 | goto done; |
431 | } | |
9440106b | 432 | DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id); |
f453ba04 DA |
433 | |
434 | /* Prepare the encoders and CRTCs before setting the mode. */ | |
435 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
436 | ||
437 | if (encoder->crtc != crtc) | |
438 | continue; | |
3b336ec4 SP |
439 | |
440 | if (encoder->bridge) | |
441 | encoder->bridge->funcs->disable(encoder->bridge); | |
442 | ||
f453ba04 DA |
443 | encoder_funcs = encoder->helper_private; |
444 | /* Disable the encoders as the first thing we do. */ | |
445 | encoder_funcs->prepare(encoder); | |
3b336ec4 SP |
446 | |
447 | if (encoder->bridge) | |
448 | encoder->bridge->funcs->post_disable(encoder->bridge); | |
f453ba04 DA |
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); | |
3b336ec4 SP |
472 | |
473 | if (encoder->bridge && encoder->bridge->funcs->mode_set) | |
474 | encoder->bridge->funcs->mode_set(encoder->bridge, mode, | |
475 | adjusted_mode); | |
f453ba04 DA |
476 | } |
477 | ||
478 | /* Now enable the clocks, plane, pipe, and connectors that we set up. */ | |
479 | crtc_funcs->commit(crtc); | |
480 | ||
481 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
482 | ||
483 | if (encoder->crtc != crtc) | |
484 | continue; | |
485 | ||
3b336ec4 SP |
486 | if (encoder->bridge) |
487 | encoder->bridge->funcs->pre_enable(encoder->bridge); | |
488 | ||
f453ba04 DA |
489 | encoder_funcs = encoder->helper_private; |
490 | encoder_funcs->commit(encoder); | |
491 | ||
3b336ec4 SP |
492 | if (encoder->bridge) |
493 | encoder->bridge->funcs->enable(encoder->bridge); | |
f453ba04 DA |
494 | } |
495 | ||
27641c3f MK |
496 | /* Store real post-adjustment hardware mode. */ |
497 | crtc->hwmode = *adjusted_mode; | |
498 | ||
499 | /* Calculate and store various constants which | |
500 | * are later needed by vblank and swap-completion | |
501 | * timestamping. They are derived from true hwmode. | |
502 | */ | |
545cdd55 | 503 | drm_calc_timestamping_constants(crtc, &crtc->hwmode); |
27641c3f | 504 | |
f453ba04 DA |
505 | /* FIXME: add subpixel order */ |
506 | done: | |
021a8455 | 507 | drm_mode_destroy(dev, adjusted_mode); |
f453ba04 | 508 | if (!ret) { |
7e99acdc | 509 | crtc->enabled = saved_enabled; |
f453ba04 DA |
510 | crtc->mode = saved_mode; |
511 | crtc->x = saved_x; | |
512 | crtc->y = saved_y; | |
513 | } | |
514 | ||
515 | return ret; | |
516 | } | |
517 | EXPORT_SYMBOL(drm_crtc_helper_set_mode); | |
518 | ||
519 | ||
6eebd6bb CW |
520 | static int |
521 | drm_crtc_helper_disable(struct drm_crtc *crtc) | |
522 | { | |
523 | struct drm_device *dev = crtc->dev; | |
524 | struct drm_connector *connector; | |
525 | struct drm_encoder *encoder; | |
526 | ||
527 | /* Decouple all encoders and their attached connectors from this crtc */ | |
528 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
529 | if (encoder->crtc != crtc) | |
530 | continue; | |
531 | ||
532 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
533 | if (connector->encoder != encoder) | |
534 | continue; | |
535 | ||
536 | connector->encoder = NULL; | |
a6ad6230 TR |
537 | |
538 | /* | |
539 | * drm_helper_disable_unused_functions() ought to be | |
540 | * doing this, but since we've decoupled the encoder | |
541 | * from the connector above, the required connection | |
542 | * between them is henceforth no longer available. | |
543 | */ | |
544 | connector->dpms = DRM_MODE_DPMS_OFF; | |
6eebd6bb CW |
545 | } |
546 | } | |
547 | ||
548 | drm_helper_disable_unused_functions(dev); | |
549 | return 0; | |
550 | } | |
551 | ||
f453ba04 DA |
552 | /** |
553 | * drm_crtc_helper_set_config - set a new config from userspace | |
0d4ed4c8 | 554 | * @set: mode set configuration |
f453ba04 | 555 | * |
0d4ed4c8 DV |
556 | * Setup a new configuration, provided by the upper layers (either an ioctl call |
557 | * from userspace or internally e.g. from the fbdev suppport code) in @set, and | |
558 | * enable it. This is the main helper functions for drivers that implement | |
559 | * kernel mode setting with the crtc helper functions and the assorted | |
560 | * ->prepare(), ->modeset() and ->commit() helper callbacks. | |
f453ba04 DA |
561 | * |
562 | * RETURNS: | |
0d4ed4c8 | 563 | * Returns 0 on success, -ERRNO on failure. |
f453ba04 DA |
564 | */ |
565 | int drm_crtc_helper_set_config(struct drm_mode_set *set) | |
566 | { | |
567 | struct drm_device *dev; | |
02ee4e94 | 568 | struct drm_crtc *new_crtc; |
e67aae79 | 569 | struct drm_encoder *save_encoders, *new_encoder, *encoder; |
4cb72b17 JB |
570 | bool mode_changed = false; /* if true do a full mode set */ |
571 | bool fb_changed = false; /* if true and !mode_changed just do a flip */ | |
e67aae79 | 572 | struct drm_connector *save_connectors, *connector; |
f453ba04 DA |
573 | int count = 0, ro, fail = 0; |
574 | struct drm_crtc_helper_funcs *crtc_funcs; | |
c5006cfe | 575 | struct drm_mode_set save_set; |
4a1b0714 | 576 | int ret; |
bf9dc102 | 577 | int i; |
f453ba04 | 578 | |
58367ed6 | 579 | DRM_DEBUG_KMS("\n"); |
f453ba04 | 580 | |
e58de880 DV |
581 | BUG_ON(!set); |
582 | BUG_ON(!set->crtc); | |
583 | BUG_ON(!set->crtc->helper_private); | |
f453ba04 | 584 | |
e58de880 DV |
585 | /* Enforce sane interface api - has been abused by the fb helper. */ |
586 | BUG_ON(!set->mode && set->fb); | |
587 | BUG_ON(set->fb && set->num_connectors == 0); | |
f453ba04 DA |
588 | |
589 | crtc_funcs = set->crtc->helper_private; | |
590 | ||
ede3ff52 CW |
591 | if (!set->mode) |
592 | set->fb = NULL; | |
593 | ||
9440106b JG |
594 | if (set->fb) { |
595 | DRM_DEBUG_KMS("[CRTC:%d] [FB:%d] #connectors=%d (x y) (%i %i)\n", | |
596 | set->crtc->base.id, set->fb->base.id, | |
597 | (int)set->num_connectors, set->x, set->y); | |
598 | } else { | |
ede3ff52 | 599 | DRM_DEBUG_KMS("[CRTC:%d] [NOFB]\n", set->crtc->base.id); |
6eebd6bb | 600 | return drm_crtc_helper_disable(set->crtc); |
9440106b | 601 | } |
f453ba04 DA |
602 | |
603 | dev = set->crtc->dev; | |
604 | ||
62ff94a5 DV |
605 | drm_warn_on_modeset_not_all_locked(dev); |
606 | ||
02ee4e94 IH |
607 | /* |
608 | * Allocate space for the backup of all (non-pointer) encoder and | |
609 | * connector data. | |
610 | */ | |
e67aae79 MM |
611 | save_encoders = kzalloc(dev->mode_config.num_encoder * |
612 | sizeof(struct drm_encoder), GFP_KERNEL); | |
02ee4e94 | 613 | if (!save_encoders) |
f453ba04 | 614 | return -ENOMEM; |
f453ba04 | 615 | |
e67aae79 MM |
616 | save_connectors = kzalloc(dev->mode_config.num_connector * |
617 | sizeof(struct drm_connector), GFP_KERNEL); | |
618 | if (!save_connectors) { | |
e67aae79 MM |
619 | kfree(save_encoders); |
620 | return -ENOMEM; | |
621 | } | |
622 | ||
02ee4e94 IH |
623 | /* |
624 | * Copy data. Note that driver private data is not affected. | |
e67aae79 MM |
625 | * Should anything bad happen only the expected state is |
626 | * restored, not the drivers personal bookkeeping. | |
627 | */ | |
e67aae79 MM |
628 | count = 0; |
629 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
630 | save_encoders[count++] = *encoder; | |
631 | } | |
632 | ||
633 | count = 0; | |
634 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
635 | save_connectors[count++] = *connector; | |
636 | } | |
637 | ||
c5006cfe JB |
638 | save_set.crtc = set->crtc; |
639 | save_set.mode = &set->crtc->mode; | |
640 | save_set.x = set->crtc->x; | |
641 | save_set.y = set->crtc->y; | |
642 | save_set.fb = set->crtc->fb; | |
643 | ||
f453ba04 DA |
644 | /* We should be able to check here if the fb has the same properties |
645 | * and then just flip_or_move it */ | |
646 | if (set->crtc->fb != set->fb) { | |
712531bf | 647 | /* If we have no fb then treat it as a full mode set */ |
7bec756c | 648 | if (set->crtc->fb == NULL) { |
58367ed6 | 649 | DRM_DEBUG_KMS("crtc has no fb, full mode set\n"); |
712531bf | 650 | mode_changed = true; |
4cb72b17 JB |
651 | } else if (set->fb == NULL) { |
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; | |
25f397a4 DV |
685 | |
686 | if (connector->dpms != DRM_MODE_DPMS_ON) { | |
687 | DRM_DEBUG_KMS("connector dpms not on, full mode switch\n"); | |
688 | mode_changed = true; | |
689 | } | |
f453ba04 DA |
690 | } |
691 | } | |
692 | ||
693 | if (new_encoder != connector->encoder) { | |
58367ed6 | 694 | DRM_DEBUG_KMS("encoder changed, full mode switch\n"); |
712531bf | 695 | mode_changed = true; |
ff846ab7 MM |
696 | /* If the encoder is reused for another connector, then |
697 | * the appropriate crtc will be set later. | |
698 | */ | |
ff6fdbed MM |
699 | if (connector->encoder) |
700 | connector->encoder->crtc = NULL; | |
f453ba04 DA |
701 | connector->encoder = new_encoder; |
702 | } | |
703 | } | |
704 | ||
705 | if (fail) { | |
706 | ret = -EINVAL; | |
e67aae79 | 707 | goto fail; |
f453ba04 DA |
708 | } |
709 | ||
710 | count = 0; | |
711 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
712 | if (!connector->encoder) | |
713 | continue; | |
714 | ||
f453ba04 DA |
715 | if (connector->encoder->crtc == set->crtc) |
716 | new_crtc = NULL; | |
717 | else | |
718 | new_crtc = connector->encoder->crtc; | |
719 | ||
720 | for (ro = 0; ro < set->num_connectors; ro++) { | |
721 | if (set->connectors[ro] == connector) | |
722 | new_crtc = set->crtc; | |
723 | } | |
7bec756c JB |
724 | |
725 | /* Make sure the new CRTC will work with the encoder */ | |
726 | if (new_crtc && | |
727 | !drm_encoder_crtc_ok(connector->encoder, new_crtc)) { | |
728 | ret = -EINVAL; | |
e67aae79 | 729 | goto fail; |
7bec756c | 730 | } |
f453ba04 | 731 | if (new_crtc != connector->encoder->crtc) { |
58367ed6 | 732 | DRM_DEBUG_KMS("crtc changed, full mode switch\n"); |
712531bf | 733 | mode_changed = true; |
f453ba04 DA |
734 | connector->encoder->crtc = new_crtc; |
735 | } | |
9440106b JG |
736 | if (new_crtc) { |
737 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] to [CRTC:%d]\n", | |
738 | connector->base.id, drm_get_connector_name(connector), | |
739 | new_crtc->base.id); | |
740 | } else { | |
741 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] to [NOCRTC]\n", | |
742 | connector->base.id, drm_get_connector_name(connector)); | |
743 | } | |
f453ba04 DA |
744 | } |
745 | ||
746 | /* mode_set_base is not a required function */ | |
712531bf JB |
747 | if (fb_changed && !crtc_funcs->mode_set_base) |
748 | mode_changed = true; | |
f453ba04 | 749 | |
712531bf | 750 | if (mode_changed) { |
48b1f5dd | 751 | if (drm_helper_crtc_in_use(set->crtc)) { |
58367ed6 ZY |
752 | DRM_DEBUG_KMS("attempting to set mode from" |
753 | " userspace\n"); | |
f453ba04 | 754 | drm_mode_debug_printmodeline(set->mode); |
356ad3cd | 755 | set->crtc->fb = set->fb; |
f453ba04 | 756 | if (!drm_crtc_helper_set_mode(set->crtc, set->mode, |
3c4fdcfb | 757 | set->x, set->y, |
bec2eac3 | 758 | save_set.fb)) { |
9440106b JG |
759 | DRM_ERROR("failed to set mode on [CRTC:%d]\n", |
760 | set->crtc->base.id); | |
bec2eac3 | 761 | set->crtc->fb = save_set.fb; |
f453ba04 | 762 | ret = -EINVAL; |
e67aae79 | 763 | goto fail; |
f453ba04 | 764 | } |
25f397a4 DV |
765 | DRM_DEBUG_KMS("Setting connector DPMS state to on\n"); |
766 | for (i = 0; i < set->num_connectors; i++) { | |
767 | DRM_DEBUG_KMS("\t[CONNECTOR:%d:%s] set DPMS on\n", set->connectors[i]->base.id, | |
768 | drm_get_connector_name(set->connectors[i])); | |
769 | set->connectors[i]->funcs->dpms(set->connectors[i], DRM_MODE_DPMS_ON); | |
770 | } | |
f453ba04 DA |
771 | } |
772 | drm_helper_disable_unused_functions(dev); | |
712531bf | 773 | } else if (fb_changed) { |
9b1596af BS |
774 | set->crtc->x = set->x; |
775 | set->crtc->y = set->y; | |
fc50a890 | 776 | set->crtc->fb = set->fb; |
5c3b82e2 | 777 | ret = crtc_funcs->mode_set_base(set->crtc, |
bec2eac3 | 778 | set->x, set->y, save_set.fb); |
0ba41e44 | 779 | if (ret != 0) { |
fbce4064 IH |
780 | set->crtc->x = save_set.x; |
781 | set->crtc->y = save_set.y; | |
bec2eac3 | 782 | set->crtc->fb = save_set.fb; |
e67aae79 | 783 | goto fail; |
0ba41e44 | 784 | } |
f453ba04 DA |
785 | } |
786 | ||
e67aae79 | 787 | kfree(save_connectors); |
f453ba04 | 788 | kfree(save_encoders); |
f453ba04 DA |
789 | return 0; |
790 | ||
e67aae79 MM |
791 | fail: |
792 | /* Restore all previous data. */ | |
e67aae79 MM |
793 | count = 0; |
794 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
795 | *encoder = save_encoders[count++]; | |
e62fb64e | 796 | } |
e67aae79 | 797 | |
f453ba04 DA |
798 | count = 0; |
799 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
e67aae79 | 800 | *connector = save_connectors[count++]; |
f453ba04 | 801 | } |
e67aae79 | 802 | |
c5006cfe JB |
803 | /* Try to restore the config */ |
804 | if (mode_changed && | |
805 | !drm_crtc_helper_set_mode(save_set.crtc, save_set.mode, save_set.x, | |
806 | save_set.y, save_set.fb)) | |
807 | DRM_ERROR("failed to restore config after modeset failure\n"); | |
808 | ||
e67aae79 | 809 | kfree(save_connectors); |
f453ba04 DA |
810 | kfree(save_encoders); |
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 | ||
3b336ec4 SP |
828 | /* Helper which handles bridge ordering around encoder dpms */ |
829 | static void drm_helper_encoder_dpms(struct drm_encoder *encoder, int mode) | |
830 | { | |
831 | struct drm_bridge *bridge = encoder->bridge; | |
832 | struct drm_encoder_helper_funcs *encoder_funcs; | |
833 | ||
834 | if (bridge) { | |
835 | if (mode == DRM_MODE_DPMS_ON) | |
836 | bridge->funcs->pre_enable(bridge); | |
837 | else | |
838 | bridge->funcs->disable(bridge); | |
839 | } | |
840 | ||
841 | encoder_funcs = encoder->helper_private; | |
842 | if (encoder_funcs->dpms) | |
843 | encoder_funcs->dpms(encoder, mode); | |
844 | ||
845 | if (bridge) { | |
846 | if (mode == DRM_MODE_DPMS_ON) | |
847 | bridge->funcs->enable(bridge); | |
848 | else | |
849 | bridge->funcs->post_disable(bridge); | |
850 | } | |
851 | } | |
852 | ||
c9fb15f6 KP |
853 | static int drm_helper_choose_crtc_dpms(struct drm_crtc *crtc) |
854 | { | |
855 | int dpms = DRM_MODE_DPMS_OFF; | |
856 | struct drm_connector *connector; | |
857 | struct drm_device *dev = crtc->dev; | |
858 | ||
859 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) | |
860 | if (connector->encoder && connector->encoder->crtc == crtc) | |
861 | if (connector->dpms < dpms) | |
862 | dpms = connector->dpms; | |
863 | return dpms; | |
864 | } | |
865 | ||
866 | /** | |
0d4ed4c8 DV |
867 | * drm_helper_connector_dpms() - connector dpms helper implementation |
868 | * @connector: affected connector | |
869 | * @mode: DPMS mode | |
c9fb15f6 | 870 | * |
0d4ed4c8 DV |
871 | * This is the main helper function provided by the crtc helper framework for |
872 | * implementing the DPMS connector attribute. It computes the new desired DPMS | |
873 | * state for all encoders and crtcs in the output mesh and calls the ->dpms() | |
874 | * callback provided by the driver appropriately. | |
c9fb15f6 KP |
875 | */ |
876 | void drm_helper_connector_dpms(struct drm_connector *connector, int mode) | |
877 | { | |
878 | struct drm_encoder *encoder = connector->encoder; | |
879 | struct drm_crtc *crtc = encoder ? encoder->crtc : NULL; | |
3b336ec4 | 880 | int old_dpms, encoder_dpms = DRM_MODE_DPMS_OFF; |
c9fb15f6 KP |
881 | |
882 | if (mode == connector->dpms) | |
883 | return; | |
884 | ||
885 | old_dpms = connector->dpms; | |
886 | connector->dpms = mode; | |
887 | ||
3b336ec4 SP |
888 | if (encoder) |
889 | encoder_dpms = drm_helper_choose_encoder_dpms(encoder); | |
890 | ||
c9fb15f6 KP |
891 | /* from off to on, do crtc then encoder */ |
892 | if (mode < old_dpms) { | |
893 | if (crtc) { | |
894 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; | |
895 | if (crtc_funcs->dpms) | |
896 | (*crtc_funcs->dpms) (crtc, | |
897 | drm_helper_choose_crtc_dpms(crtc)); | |
898 | } | |
3b336ec4 SP |
899 | if (encoder) |
900 | drm_helper_encoder_dpms(encoder, encoder_dpms); | |
c9fb15f6 KP |
901 | } |
902 | ||
903 | /* from on to off, do encoder then crtc */ | |
904 | if (mode > old_dpms) { | |
3b336ec4 SP |
905 | if (encoder) |
906 | drm_helper_encoder_dpms(encoder, encoder_dpms); | |
c9fb15f6 KP |
907 | if (crtc) { |
908 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; | |
909 | if (crtc_funcs->dpms) | |
910 | (*crtc_funcs->dpms) (crtc, | |
911 | drm_helper_choose_crtc_dpms(crtc)); | |
912 | } | |
913 | } | |
914 | ||
915 | return; | |
916 | } | |
917 | EXPORT_SYMBOL(drm_helper_connector_dpms); | |
918 | ||
9fd93784 DV |
919 | void drm_helper_mode_fill_fb_struct(struct drm_framebuffer *fb, |
920 | struct drm_mode_fb_cmd2 *mode_cmd) | |
f453ba04 | 921 | { |
01f2c773 VS |
922 | int i; |
923 | ||
f453ba04 DA |
924 | fb->width = mode_cmd->width; |
925 | fb->height = mode_cmd->height; | |
01f2c773 VS |
926 | for (i = 0; i < 4; i++) { |
927 | fb->pitches[i] = mode_cmd->pitches[i]; | |
928 | fb->offsets[i] = mode_cmd->offsets[i]; | |
929 | } | |
248dbc23 | 930 | drm_fb_get_bpp_depth(mode_cmd->pixel_format, &fb->depth, |
308e5bcb JB |
931 | &fb->bits_per_pixel); |
932 | fb->pixel_format = mode_cmd->pixel_format; | |
f453ba04 DA |
933 | } |
934 | EXPORT_SYMBOL(drm_helper_mode_fill_fb_struct); | |
935 | ||
aa4cd910 DV |
936 | /** |
937 | * drm_helper_resume_force_mode - force-restore mode setting configuration | |
938 | * @dev: drm_device which should be restored | |
939 | * | |
940 | * Drivers which use the mode setting helpers can use this function to | |
941 | * force-restore the mode setting configuration e.g. on resume or when something | |
942 | * else might have trampled over the hw state (like some overzealous old BIOSen | |
943 | * tended to do). | |
944 | */ | |
f453ba04 DA |
945 | int drm_helper_resume_force_mode(struct drm_device *dev) |
946 | { | |
947 | struct drm_crtc *crtc; | |
89347bb8 | 948 | struct drm_encoder *encoder; |
89347bb8 | 949 | struct drm_crtc_helper_funcs *crtc_funcs; |
3b336ec4 | 950 | int ret, encoder_dpms; |
f453ba04 DA |
951 | |
952 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
953 | ||
954 | if (!crtc->enabled) | |
955 | continue; | |
956 | ||
3c4fdcfb KH |
957 | ret = drm_crtc_helper_set_mode(crtc, &crtc->mode, |
958 | crtc->x, crtc->y, crtc->fb); | |
f453ba04 DA |
959 | |
960 | if (ret == false) | |
961 | DRM_ERROR("failed to set mode on crtc %p\n", crtc); | |
89347bb8 DJ |
962 | |
963 | /* Turn off outputs that were already powered off */ | |
964 | if (drm_helper_choose_crtc_dpms(crtc)) { | |
965 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
966 | ||
967 | if(encoder->crtc != crtc) | |
968 | continue; | |
969 | ||
3b336ec4 SP |
970 | encoder_dpms = drm_helper_choose_encoder_dpms( |
971 | encoder); | |
972 | ||
973 | drm_helper_encoder_dpms(encoder, encoder_dpms); | |
89347bb8 | 974 | } |
817e631e CW |
975 | |
976 | crtc_funcs = crtc->helper_private; | |
977 | if (crtc_funcs->dpms) | |
978 | (*crtc_funcs->dpms) (crtc, | |
979 | drm_helper_choose_crtc_dpms(crtc)); | |
89347bb8 | 980 | } |
f453ba04 | 981 | } |
af4fcb57 ZY |
982 | /* disable the unused connectors while restoring the modesetting */ |
983 | drm_helper_disable_unused_functions(dev); | |
f453ba04 DA |
984 | return 0; |
985 | } | |
986 | EXPORT_SYMBOL(drm_helper_resume_force_mode); | |
eb1f8e4f | 987 | |
3d3683f0 DV |
988 | void drm_kms_helper_hotplug_event(struct drm_device *dev) |
989 | { | |
990 | /* send a uevent + call fbdev */ | |
991 | drm_sysfs_hotplug_event(dev); | |
992 | if (dev->mode_config.funcs->output_poll_changed) | |
993 | dev->mode_config.funcs->output_poll_changed(dev); | |
994 | } | |
995 | EXPORT_SYMBOL(drm_kms_helper_hotplug_event); | |
996 | ||
eb1f8e4f | 997 | #define DRM_OUTPUT_POLL_PERIOD (10*HZ) |
991ea75c | 998 | static void output_poll_execute(struct work_struct *work) |
eb1f8e4f | 999 | { |
991ea75c TH |
1000 | struct delayed_work *delayed_work = to_delayed_work(work); |
1001 | struct drm_device *dev = container_of(delayed_work, struct drm_device, mode_config.output_poll_work); | |
eb1f8e4f | 1002 | struct drm_connector *connector; |
c5027dec | 1003 | enum drm_connector_status old_status; |
d482e5fa | 1004 | bool repoll = false, changed = false; |
eb1f8e4f | 1005 | |
e58f637b CW |
1006 | if (!drm_kms_helper_poll) |
1007 | return; | |
1008 | ||
eb1f8e4f DA |
1009 | mutex_lock(&dev->mode_config.mutex); |
1010 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
1011 | ||
11e68685 DV |
1012 | /* Ignore forced connectors. */ |
1013 | if (connector->force) | |
1014 | continue; | |
1015 | ||
816da85a DV |
1016 | /* Ignore HPD capable connectors and connectors where we don't |
1017 | * want any hotplug detection at all for polling. */ | |
1018 | if (!connector->polled || connector->polled == DRM_CONNECTOR_POLL_HPD) | |
eb1f8e4f DA |
1019 | continue; |
1020 | ||
a4f968d8 | 1021 | repoll = true; |
eb1f8e4f DA |
1022 | |
1023 | old_status = connector->status; | |
1024 | /* if we are connected and don't want to poll for disconnect | |
1025 | skip it */ | |
1026 | if (old_status == connector_status_connected && | |
816da85a | 1027 | !(connector->polled & DRM_CONNECTOR_POLL_DISCONNECT)) |
eb1f8e4f DA |
1028 | continue; |
1029 | ||
c5027dec | 1030 | connector->status = connector->funcs->detect(connector, false); |
b2dfcae3 LD |
1031 | if (old_status != connector->status) { |
1032 | const char *old, *new; | |
1033 | ||
1034 | old = drm_get_connector_status_name(old_status); | |
1035 | new = drm_get_connector_status_name(connector->status); | |
1036 | ||
1037 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] " | |
1038 | "status updated from %s to %s\n", | |
1039 | connector->base.id, | |
1040 | drm_get_connector_name(connector), | |
1041 | old, new); | |
1042 | ||
eb1f8e4f | 1043 | changed = true; |
b2dfcae3 | 1044 | } |
eb1f8e4f DA |
1045 | } |
1046 | ||
1047 | mutex_unlock(&dev->mode_config.mutex); | |
1048 | ||
3d3683f0 DV |
1049 | if (changed) |
1050 | drm_kms_helper_hotplug_event(dev); | |
eb1f8e4f | 1051 | |
9a919c46 | 1052 | if (repoll) |
3b07e9ca | 1053 | schedule_delayed_work(delayed_work, DRM_OUTPUT_POLL_PERIOD); |
eb1f8e4f DA |
1054 | } |
1055 | ||
fbf81762 DA |
1056 | void drm_kms_helper_poll_disable(struct drm_device *dev) |
1057 | { | |
1058 | if (!dev->mode_config.poll_enabled) | |
1059 | return; | |
991ea75c | 1060 | cancel_delayed_work_sync(&dev->mode_config.output_poll_work); |
fbf81762 DA |
1061 | } |
1062 | EXPORT_SYMBOL(drm_kms_helper_poll_disable); | |
1063 | ||
1064 | void drm_kms_helper_poll_enable(struct drm_device *dev) | |
eb1f8e4f | 1065 | { |
eb1f8e4f | 1066 | bool poll = false; |
fbf81762 | 1067 | struct drm_connector *connector; |
eb1f8e4f | 1068 | |
e58f637b CW |
1069 | if (!dev->mode_config.poll_enabled || !drm_kms_helper_poll) |
1070 | return; | |
1071 | ||
eb1f8e4f | 1072 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
a4f968d8 DV |
1073 | if (connector->polled & (DRM_CONNECTOR_POLL_CONNECT | |
1074 | DRM_CONNECTOR_POLL_DISCONNECT)) | |
eb1f8e4f DA |
1075 | poll = true; |
1076 | } | |
eb1f8e4f | 1077 | |
9a919c46 | 1078 | if (poll) |
3b07e9ca | 1079 | schedule_delayed_work(&dev->mode_config.output_poll_work, DRM_OUTPUT_POLL_PERIOD); |
eb1f8e4f | 1080 | } |
fbf81762 DA |
1081 | EXPORT_SYMBOL(drm_kms_helper_poll_enable); |
1082 | ||
1083 | void drm_kms_helper_poll_init(struct drm_device *dev) | |
1084 | { | |
991ea75c | 1085 | INIT_DELAYED_WORK(&dev->mode_config.output_poll_work, output_poll_execute); |
fbf81762 DA |
1086 | dev->mode_config.poll_enabled = true; |
1087 | ||
1088 | drm_kms_helper_poll_enable(dev); | |
1089 | } | |
eb1f8e4f DA |
1090 | EXPORT_SYMBOL(drm_kms_helper_poll_init); |
1091 | ||
1092 | void drm_kms_helper_poll_fini(struct drm_device *dev) | |
1093 | { | |
fbf81762 | 1094 | drm_kms_helper_poll_disable(dev); |
eb1f8e4f DA |
1095 | } |
1096 | EXPORT_SYMBOL(drm_kms_helper_poll_fini); | |
1097 | ||
b8206d39 | 1098 | bool drm_helper_hpd_irq_event(struct drm_device *dev) |
eb1f8e4f | 1099 | { |
816da85a DV |
1100 | struct drm_connector *connector; |
1101 | enum drm_connector_status old_status; | |
1102 | bool changed = false; | |
1103 | ||
eb1f8e4f | 1104 | if (!dev->mode_config.poll_enabled) |
b8206d39 | 1105 | return false; |
e58f637b | 1106 | |
816da85a DV |
1107 | mutex_lock(&dev->mode_config.mutex); |
1108 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
1109 | ||
1110 | /* Only handle HPD capable connectors. */ | |
1111 | if (!(connector->polled & DRM_CONNECTOR_POLL_HPD)) | |
1112 | continue; | |
1113 | ||
1114 | old_status = connector->status; | |
1115 | ||
1116 | connector->status = connector->funcs->detect(connector, false); | |
ed7951dc | 1117 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] status updated from %s to %s\n", |
816da85a DV |
1118 | connector->base.id, |
1119 | drm_get_connector_name(connector), | |
ed7951dc LD |
1120 | drm_get_connector_status_name(old_status), |
1121 | drm_get_connector_status_name(connector->status)); | |
816da85a DV |
1122 | if (old_status != connector->status) |
1123 | changed = true; | |
1124 | } | |
1125 | ||
1126 | mutex_unlock(&dev->mode_config.mutex); | |
1127 | ||
1128 | if (changed) | |
1129 | drm_kms_helper_hotplug_event(dev); | |
b8206d39 MAL |
1130 | |
1131 | return changed; | |
816da85a | 1132 | } |
eb1f8e4f | 1133 | EXPORT_SYMBOL(drm_helper_hpd_irq_event); |