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f453ba04 DA |
1 | /* |
2 | * Copyright (c) 2006-2008 Intel Corporation | |
3 | * Copyright (c) 2007 Dave Airlie <airlied@linux.ie> | |
4 | * | |
5 | * DRM core CRTC related functions | |
6 | * | |
7 | * Permission to use, copy, modify, distribute, and sell this software and its | |
8 | * documentation for any purpose is hereby granted without fee, provided that | |
9 | * the above copyright notice appear in all copies and that both that copyright | |
10 | * notice and this permission notice appear in supporting documentation, and | |
11 | * that the name of the copyright holders not be used in advertising or | |
12 | * publicity pertaining to distribution of the software without specific, | |
13 | * written prior permission. The copyright holders make no representations | |
14 | * about the suitability of this software for any purpose. It is provided "as | |
15 | * is" without express or implied warranty. | |
16 | * | |
17 | * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, | |
18 | * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO | |
19 | * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR | |
20 | * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, | |
21 | * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER | |
22 | * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE | |
23 | * OF THIS SOFTWARE. | |
24 | * | |
25 | * Authors: | |
26 | * Keith Packard | |
27 | * Eric Anholt <eric@anholt.net> | |
28 | * Dave Airlie <airlied@linux.ie> | |
29 | * Jesse Barnes <jesse.barnes@intel.com> | |
30 | */ | |
31 | ||
2d1a8a48 | 32 | #include <linux/export.h> |
0603ba14 | 33 | #include <linux/moduleparam.h> |
2d1a8a48 | 34 | |
760285e7 DH |
35 | #include <drm/drmP.h> |
36 | #include <drm/drm_crtc.h> | |
37 | #include <drm/drm_fourcc.h> | |
38 | #include <drm/drm_crtc_helper.h> | |
39 | #include <drm/drm_fb_helper.h> | |
40 | #include <drm/drm_edid.h> | |
f453ba04 | 41 | |
0d4ed4c8 DV |
42 | /** |
43 | * drm_helper_move_panel_connectors_to_head() - move panels to the front in the | |
44 | * connector list | |
45 | * @dev: drm device to operate on | |
46 | * | |
47 | * Some userspace presumes that the first connected connector is the main | |
48 | * display, where it's supposed to display e.g. the login screen. For | |
49 | * laptops, this should be the main panel. Use this function to sort all | |
50 | * (eDP/LVDS) panels to the front of the connector list, instead of | |
51 | * painstakingly trying to initialize them in the right order. | |
52 | */ | |
cfc1a062 DV |
53 | void drm_helper_move_panel_connectors_to_head(struct drm_device *dev) |
54 | { | |
55 | struct drm_connector *connector, *tmp; | |
56 | struct list_head panel_list; | |
57 | ||
58 | INIT_LIST_HEAD(&panel_list); | |
59 | ||
60 | list_for_each_entry_safe(connector, tmp, | |
61 | &dev->mode_config.connector_list, head) { | |
62 | if (connector->connector_type == DRM_MODE_CONNECTOR_LVDS || | |
63 | connector->connector_type == DRM_MODE_CONNECTOR_eDP) | |
64 | list_move_tail(&connector->head, &panel_list); | |
65 | } | |
66 | ||
67 | list_splice(&panel_list, &dev->mode_config.connector_list); | |
68 | } | |
69 | EXPORT_SYMBOL(drm_helper_move_panel_connectors_to_head); | |
70 | ||
e58f637b CW |
71 | static bool drm_kms_helper_poll = true; |
72 | module_param_named(poll, drm_kms_helper_poll, bool, 0600); | |
73 | ||
6714977b | 74 | static void drm_mode_validate_flag(struct drm_connector *connector, |
75 | int flags) | |
76 | { | |
a1178ca0 | 77 | struct drm_display_mode *mode; |
6714977b | 78 | |
79 | if (flags == (DRM_MODE_FLAG_DBLSCAN | DRM_MODE_FLAG_INTERLACE)) | |
80 | return; | |
81 | ||
a1178ca0 | 82 | list_for_each_entry(mode, &connector->modes, head) { |
6714977b | 83 | if ((mode->flags & DRM_MODE_FLAG_INTERLACE) && |
84 | !(flags & DRM_MODE_FLAG_INTERLACE)) | |
85 | mode->status = MODE_NO_INTERLACE; | |
86 | if ((mode->flags & DRM_MODE_FLAG_DBLSCAN) && | |
87 | !(flags & DRM_MODE_FLAG_DBLSCAN)) | |
88 | mode->status = MODE_NO_DBLESCAN; | |
89 | } | |
90 | ||
91 | return; | |
92 | } | |
93 | ||
f453ba04 | 94 | /** |
38651674 | 95 | * drm_helper_probe_single_connector_modes - get complete set of display modes |
0d4ed4c8 | 96 | * @connector: connector to probe |
f453ba04 DA |
97 | * @maxX: max width for modes |
98 | * @maxY: max height for modes | |
99 | * | |
100 | * LOCKING: | |
101 | * Caller must hold mode config lock. | |
102 | * | |
0d4ed4c8 DV |
103 | * Based on the helper callbacks implemented by @connector try to detect all |
104 | * valid modes. Modes will first be added to the connector's probed_modes list, | |
105 | * then culled (based on validity and the @maxX, @maxY parameters) and put into | |
106 | * the normal modes list. | |
f453ba04 | 107 | * |
0d4ed4c8 DV |
108 | * Intended to be use as a generic implementation of the ->probe() @connector |
109 | * callback for drivers that use the crtc helpers for output mode filtering and | |
110 | * detection. | |
40a518d9 JB |
111 | * |
112 | * RETURNS: | |
113 | * Number of modes found on @connector. | |
f453ba04 | 114 | */ |
40a518d9 JB |
115 | int drm_helper_probe_single_connector_modes(struct drm_connector *connector, |
116 | uint32_t maxX, uint32_t maxY) | |
f453ba04 DA |
117 | { |
118 | struct drm_device *dev = connector->dev; | |
a1178ca0 | 119 | struct drm_display_mode *mode; |
f453ba04 DA |
120 | struct drm_connector_helper_funcs *connector_funcs = |
121 | connector->helper_private; | |
40a518d9 | 122 | int count = 0; |
6714977b | 123 | int mode_flags = 0; |
ebbd97ad | 124 | bool verbose_prune = true; |
f453ba04 | 125 | |
9440106b JG |
126 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", connector->base.id, |
127 | drm_get_connector_name(connector)); | |
f453ba04 | 128 | /* set all modes to the unverified state */ |
a1178ca0 | 129 | list_for_each_entry(mode, &connector->modes, head) |
f453ba04 DA |
130 | mode->status = MODE_UNVERIFIED; |
131 | ||
d50ba256 DA |
132 | if (connector->force) { |
133 | if (connector->force == DRM_FORCE_ON) | |
134 | connector->status = connector_status_connected; | |
135 | else | |
136 | connector->status = connector_status_disconnected; | |
137 | if (connector->funcs->force) | |
138 | connector->funcs->force(connector); | |
e58f637b | 139 | } else { |
930a9e28 | 140 | connector->status = connector->funcs->detect(connector, true); |
e58f637b | 141 | } |
f453ba04 | 142 | |
905bc9ff DV |
143 | /* Re-enable polling in case the global poll config changed. */ |
144 | if (drm_kms_helper_poll != dev->mode_config.poll_running) | |
145 | drm_kms_helper_poll_enable(dev); | |
146 | ||
147 | dev->mode_config.poll_running = drm_kms_helper_poll; | |
148 | ||
f453ba04 | 149 | if (connector->status == connector_status_disconnected) { |
9440106b JG |
150 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] disconnected\n", |
151 | connector->base.id, drm_get_connector_name(connector)); | |
72539832 | 152 | drm_mode_connector_update_edid_property(connector, NULL); |
ebbd97ad | 153 | verbose_prune = false; |
620f3781 | 154 | goto prune; |
f453ba04 DA |
155 | } |
156 | ||
da0df92b CE |
157 | #ifdef CONFIG_DRM_LOAD_EDID_FIRMWARE |
158 | count = drm_load_edid_firmware(connector); | |
159 | if (count == 0) | |
160 | #endif | |
161 | count = (*connector_funcs->get_modes)(connector); | |
162 | ||
c7ef35a9 | 163 | if (count == 0 && connector->status == connector_status_connected) |
9632b41f | 164 | count = drm_add_modes_noedid(connector, 1024, 768); |
c7ef35a9 CW |
165 | if (count == 0) |
166 | goto prune; | |
f453ba04 | 167 | |
40a518d9 | 168 | drm_mode_connector_list_update(connector); |
f453ba04 DA |
169 | |
170 | if (maxX && maxY) | |
171 | drm_mode_validate_size(dev, &connector->modes, maxX, | |
172 | maxY, 0); | |
6714977b | 173 | |
174 | if (connector->interlace_allowed) | |
175 | mode_flags |= DRM_MODE_FLAG_INTERLACE; | |
176 | if (connector->doublescan_allowed) | |
177 | mode_flags |= DRM_MODE_FLAG_DBLSCAN; | |
178 | drm_mode_validate_flag(connector, mode_flags); | |
179 | ||
a1178ca0 | 180 | list_for_each_entry(mode, &connector->modes, head) { |
f453ba04 DA |
181 | if (mode->status == MODE_OK) |
182 | mode->status = connector_funcs->mode_valid(connector, | |
183 | mode); | |
184 | } | |
185 | ||
620f3781 | 186 | prune: |
ebbd97ad | 187 | drm_mode_prune_invalid(dev, &connector->modes, verbose_prune); |
f453ba04 | 188 | |
40a518d9 JB |
189 | if (list_empty(&connector->modes)) |
190 | return 0; | |
f453ba04 | 191 | |
9bc3cd56 VS |
192 | list_for_each_entry(mode, &connector->modes, head) |
193 | mode->vrefresh = drm_mode_vrefresh(mode); | |
194 | ||
f453ba04 DA |
195 | drm_mode_sort(&connector->modes); |
196 | ||
9440106b JG |
197 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] probed modes :\n", connector->base.id, |
198 | drm_get_connector_name(connector)); | |
a1178ca0 | 199 | list_for_each_entry(mode, &connector->modes, head) { |
f453ba04 DA |
200 | drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V); |
201 | drm_mode_debug_printmodeline(mode); | |
202 | } | |
40a518d9 JB |
203 | |
204 | return count; | |
f453ba04 DA |
205 | } |
206 | EXPORT_SYMBOL(drm_helper_probe_single_connector_modes); | |
207 | ||
c9fb15f6 KP |
208 | /** |
209 | * drm_helper_encoder_in_use - check if a given encoder is in use | |
210 | * @encoder: encoder to check | |
211 | * | |
212 | * LOCKING: | |
213 | * Caller must hold mode config lock. | |
214 | * | |
215 | * Walk @encoders's DRM device's mode_config and see if it's in use. | |
216 | * | |
217 | * RETURNS: | |
218 | * True if @encoder is part of the mode_config, false otherwise. | |
219 | */ | |
220 | bool drm_helper_encoder_in_use(struct drm_encoder *encoder) | |
221 | { | |
222 | struct drm_connector *connector; | |
223 | struct drm_device *dev = encoder->dev; | |
224 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) | |
225 | if (connector->encoder == encoder) | |
226 | return true; | |
227 | return false; | |
228 | } | |
229 | EXPORT_SYMBOL(drm_helper_encoder_in_use); | |
230 | ||
f453ba04 DA |
231 | /** |
232 | * drm_helper_crtc_in_use - check if a given CRTC is in a mode_config | |
233 | * @crtc: CRTC to check | |
234 | * | |
235 | * LOCKING: | |
236 | * Caller must hold mode config lock. | |
237 | * | |
238 | * Walk @crtc's DRM device's mode_config and see if it's in use. | |
239 | * | |
240 | * RETURNS: | |
241 | * True if @crtc is part of the mode_config, false otherwise. | |
242 | */ | |
243 | bool drm_helper_crtc_in_use(struct drm_crtc *crtc) | |
244 | { | |
245 | struct drm_encoder *encoder; | |
246 | struct drm_device *dev = crtc->dev; | |
247 | /* FIXME: Locking around list access? */ | |
248 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) | |
c9fb15f6 | 249 | if (encoder->crtc == crtc && drm_helper_encoder_in_use(encoder)) |
f453ba04 DA |
250 | return true; |
251 | return false; | |
252 | } | |
253 | EXPORT_SYMBOL(drm_helper_crtc_in_use); | |
254 | ||
86a1b9d1 BS |
255 | static void |
256 | drm_encoder_disable(struct drm_encoder *encoder) | |
257 | { | |
258 | struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; | |
259 | ||
3b336ec4 SP |
260 | if (encoder->bridge) |
261 | encoder->bridge->funcs->disable(encoder->bridge); | |
262 | ||
86a1b9d1 BS |
263 | if (encoder_funcs->disable) |
264 | (*encoder_funcs->disable)(encoder); | |
265 | else | |
266 | (*encoder_funcs->dpms)(encoder, DRM_MODE_DPMS_OFF); | |
3b336ec4 SP |
267 | |
268 | if (encoder->bridge) | |
269 | encoder->bridge->funcs->post_disable(encoder->bridge); | |
86a1b9d1 BS |
270 | } |
271 | ||
f453ba04 | 272 | /** |
89347bb8 | 273 | * drm_helper_disable_unused_functions - disable unused objects |
f453ba04 DA |
274 | * @dev: DRM device |
275 | * | |
276 | * LOCKING: | |
277 | * Caller must hold mode config lock. | |
278 | * | |
279 | * If an connector or CRTC isn't part of @dev's mode_config, it can be disabled | |
280 | * by calling its dpms function, which should power it off. | |
281 | */ | |
282 | void drm_helper_disable_unused_functions(struct drm_device *dev) | |
283 | { | |
284 | struct drm_encoder *encoder; | |
a3a0544b | 285 | struct drm_connector *connector; |
f453ba04 DA |
286 | struct drm_crtc *crtc; |
287 | ||
a3a0544b DA |
288 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
289 | if (!connector->encoder) | |
290 | continue; | |
291 | if (connector->status == connector_status_disconnected) | |
292 | connector->encoder = NULL; | |
293 | } | |
294 | ||
f453ba04 | 295 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
92971021 | 296 | if (!drm_helper_encoder_in_use(encoder)) { |
86a1b9d1 | 297 | drm_encoder_disable(encoder); |
9c552dd7 DA |
298 | /* disconnector encoder from any connector */ |
299 | encoder->crtc = NULL; | |
a3a0544b | 300 | } |
f453ba04 DA |
301 | } |
302 | ||
303 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
304 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; | |
305 | crtc->enabled = drm_helper_crtc_in_use(crtc); | |
306 | if (!crtc->enabled) { | |
5c8d7171 AD |
307 | if (crtc_funcs->disable) |
308 | (*crtc_funcs->disable)(crtc); | |
309 | else | |
310 | (*crtc_funcs->dpms)(crtc, DRM_MODE_DPMS_OFF); | |
f453ba04 DA |
311 | crtc->fb = NULL; |
312 | } | |
313 | } | |
314 | } | |
315 | EXPORT_SYMBOL(drm_helper_disable_unused_functions); | |
316 | ||
7bec756c JB |
317 | /** |
318 | * drm_encoder_crtc_ok - can a given crtc drive a given encoder? | |
319 | * @encoder: encoder to test | |
320 | * @crtc: crtc to test | |
321 | * | |
322 | * Return false if @encoder can't be driven by @crtc, true otherwise. | |
323 | */ | |
324 | static bool drm_encoder_crtc_ok(struct drm_encoder *encoder, | |
325 | struct drm_crtc *crtc) | |
326 | { | |
327 | struct drm_device *dev; | |
328 | struct drm_crtc *tmp; | |
329 | int crtc_mask = 1; | |
330 | ||
fce7d61b | 331 | WARN(!crtc, "checking null crtc?\n"); |
7bec756c JB |
332 | |
333 | dev = crtc->dev; | |
334 | ||
335 | list_for_each_entry(tmp, &dev->mode_config.crtc_list, head) { | |
336 | if (tmp == crtc) | |
337 | break; | |
338 | crtc_mask <<= 1; | |
339 | } | |
340 | ||
341 | if (encoder->possible_crtcs & crtc_mask) | |
342 | return true; | |
343 | return false; | |
344 | } | |
345 | ||
346 | /* | |
347 | * Check the CRTC we're going to map each output to vs. its current | |
348 | * CRTC. If they don't match, we have to disable the output and the CRTC | |
349 | * since the driver will have to re-route things. | |
350 | */ | |
351 | static void | |
352 | drm_crtc_prepare_encoders(struct drm_device *dev) | |
353 | { | |
354 | struct drm_encoder_helper_funcs *encoder_funcs; | |
355 | struct drm_encoder *encoder; | |
356 | ||
357 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
358 | encoder_funcs = encoder->helper_private; | |
359 | /* Disable unused encoders */ | |
360 | if (encoder->crtc == NULL) | |
86a1b9d1 | 361 | drm_encoder_disable(encoder); |
7bec756c JB |
362 | /* Disable encoders whose CRTC is about to change */ |
363 | if (encoder_funcs->get_crtc && | |
364 | encoder->crtc != (*encoder_funcs->get_crtc)(encoder)) | |
86a1b9d1 | 365 | drm_encoder_disable(encoder); |
7bec756c JB |
366 | } |
367 | } | |
368 | ||
f453ba04 | 369 | /** |
0d4ed4c8 | 370 | * drm_crtc_helper_set_mode - internal helper to set a mode |
f453ba04 DA |
371 | * @crtc: CRTC to program |
372 | * @mode: mode to use | |
4c9287c6 AD |
373 | * @x: horizontal offset into the surface |
374 | * @y: vertical offset into the surface | |
0d4ed4c8 | 375 | * @old_fb: old framebuffer, for cleanup |
f453ba04 DA |
376 | * |
377 | * LOCKING: | |
378 | * Caller must hold mode config lock. | |
379 | * | |
380 | * Try to set @mode on @crtc. Give @crtc and its associated connectors a chance | |
0d4ed4c8 DV |
381 | * to fixup or reject the mode prior to trying to set it. This is an internal |
382 | * helper that drivers could e.g. use to update properties that require the | |
383 | * entire output pipe to be disabled and re-enabled in a new configuration. For | |
384 | * example for changing whether audio is enabled on a hdmi link or for changing | |
385 | * panel fitter or dither attributes. It is also called by the | |
386 | * drm_crtc_helper_set_config() helper function to drive the mode setting | |
387 | * sequence. | |
f453ba04 DA |
388 | * |
389 | * RETURNS: | |
390 | * True if the mode was set successfully, or false otherwise. | |
391 | */ | |
392 | bool drm_crtc_helper_set_mode(struct drm_crtc *crtc, | |
393 | struct drm_display_mode *mode, | |
3c4fdcfb KH |
394 | int x, int y, |
395 | struct drm_framebuffer *old_fb) | |
f453ba04 DA |
396 | { |
397 | struct drm_device *dev = crtc->dev; | |
27641c3f | 398 | struct drm_display_mode *adjusted_mode, saved_mode, saved_hwmode; |
f453ba04 DA |
399 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
400 | struct drm_encoder_helper_funcs *encoder_funcs; | |
401 | int saved_x, saved_y; | |
402 | struct drm_encoder *encoder; | |
403 | bool ret = true; | |
404 | ||
f453ba04 | 405 | crtc->enabled = drm_helper_crtc_in_use(crtc); |
f453ba04 DA |
406 | if (!crtc->enabled) |
407 | return true; | |
408 | ||
021a8455 | 409 | adjusted_mode = drm_mode_duplicate(dev, mode); |
6bfc56aa VS |
410 | if (!adjusted_mode) |
411 | return false; | |
021a8455 | 412 | |
27641c3f | 413 | saved_hwmode = crtc->hwmode; |
f453ba04 DA |
414 | saved_mode = crtc->mode; |
415 | saved_x = crtc->x; | |
416 | saved_y = crtc->y; | |
417 | ||
418 | /* Update crtc values up front so the driver can rely on them for mode | |
419 | * setting. | |
420 | */ | |
421 | crtc->mode = *mode; | |
422 | crtc->x = x; | |
423 | crtc->y = y; | |
424 | ||
f453ba04 DA |
425 | /* Pass our mode to the connectors and the CRTC to give them a chance to |
426 | * adjust it according to limitations or connector properties, and also | |
427 | * a chance to reject the mode entirely. | |
428 | */ | |
429 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
430 | ||
431 | if (encoder->crtc != crtc) | |
432 | continue; | |
3b336ec4 SP |
433 | |
434 | if (encoder->bridge && encoder->bridge->funcs->mode_fixup) { | |
435 | ret = encoder->bridge->funcs->mode_fixup( | |
436 | encoder->bridge, mode, adjusted_mode); | |
437 | if (!ret) { | |
438 | DRM_DEBUG_KMS("Bridge fixup failed\n"); | |
439 | goto done; | |
440 | } | |
441 | } | |
442 | ||
f453ba04 DA |
443 | encoder_funcs = encoder->helper_private; |
444 | if (!(ret = encoder_funcs->mode_fixup(encoder, mode, | |
445 | adjusted_mode))) { | |
836e53d7 | 446 | DRM_DEBUG_KMS("Encoder fixup failed\n"); |
f453ba04 DA |
447 | goto done; |
448 | } | |
449 | } | |
450 | ||
451 | if (!(ret = crtc_funcs->mode_fixup(crtc, mode, adjusted_mode))) { | |
836e53d7 | 452 | DRM_DEBUG_KMS("CRTC fixup failed\n"); |
f453ba04 DA |
453 | goto done; |
454 | } | |
9440106b | 455 | DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id); |
f453ba04 DA |
456 | |
457 | /* Prepare the encoders and CRTCs before setting the mode. */ | |
458 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
459 | ||
460 | if (encoder->crtc != crtc) | |
461 | continue; | |
3b336ec4 SP |
462 | |
463 | if (encoder->bridge) | |
464 | encoder->bridge->funcs->disable(encoder->bridge); | |
465 | ||
f453ba04 DA |
466 | encoder_funcs = encoder->helper_private; |
467 | /* Disable the encoders as the first thing we do. */ | |
468 | encoder_funcs->prepare(encoder); | |
3b336ec4 SP |
469 | |
470 | if (encoder->bridge) | |
471 | encoder->bridge->funcs->post_disable(encoder->bridge); | |
f453ba04 DA |
472 | } |
473 | ||
7bec756c JB |
474 | drm_crtc_prepare_encoders(dev); |
475 | ||
f453ba04 DA |
476 | crtc_funcs->prepare(crtc); |
477 | ||
478 | /* Set up the DPLL and any encoders state that needs to adjust or depend | |
479 | * on the DPLL. | |
480 | */ | |
5c3b82e2 CW |
481 | ret = !crtc_funcs->mode_set(crtc, mode, adjusted_mode, x, y, old_fb); |
482 | if (!ret) | |
483 | goto done; | |
f453ba04 DA |
484 | |
485 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
486 | ||
487 | if (encoder->crtc != crtc) | |
488 | continue; | |
489 | ||
9440106b JG |
490 | DRM_DEBUG_KMS("[ENCODER:%d:%s] set [MODE:%d:%s]\n", |
491 | encoder->base.id, drm_get_encoder_name(encoder), | |
492 | mode->base.id, mode->name); | |
f453ba04 DA |
493 | encoder_funcs = encoder->helper_private; |
494 | encoder_funcs->mode_set(encoder, mode, adjusted_mode); | |
3b336ec4 SP |
495 | |
496 | if (encoder->bridge && encoder->bridge->funcs->mode_set) | |
497 | encoder->bridge->funcs->mode_set(encoder->bridge, mode, | |
498 | adjusted_mode); | |
f453ba04 DA |
499 | } |
500 | ||
501 | /* Now enable the clocks, plane, pipe, and connectors that we set up. */ | |
502 | crtc_funcs->commit(crtc); | |
503 | ||
504 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
505 | ||
506 | if (encoder->crtc != crtc) | |
507 | continue; | |
508 | ||
3b336ec4 SP |
509 | if (encoder->bridge) |
510 | encoder->bridge->funcs->pre_enable(encoder->bridge); | |
511 | ||
f453ba04 DA |
512 | encoder_funcs = encoder->helper_private; |
513 | encoder_funcs->commit(encoder); | |
514 | ||
3b336ec4 SP |
515 | if (encoder->bridge) |
516 | encoder->bridge->funcs->enable(encoder->bridge); | |
f453ba04 DA |
517 | } |
518 | ||
27641c3f MK |
519 | /* Store real post-adjustment hardware mode. */ |
520 | crtc->hwmode = *adjusted_mode; | |
521 | ||
522 | /* Calculate and store various constants which | |
523 | * are later needed by vblank and swap-completion | |
524 | * timestamping. They are derived from true hwmode. | |
525 | */ | |
526 | drm_calc_timestamping_constants(crtc); | |
527 | ||
f453ba04 DA |
528 | /* FIXME: add subpixel order */ |
529 | done: | |
021a8455 | 530 | drm_mode_destroy(dev, adjusted_mode); |
f453ba04 | 531 | if (!ret) { |
27641c3f | 532 | crtc->hwmode = saved_hwmode; |
f453ba04 DA |
533 | crtc->mode = saved_mode; |
534 | crtc->x = saved_x; | |
535 | crtc->y = saved_y; | |
536 | } | |
537 | ||
538 | return ret; | |
539 | } | |
540 | EXPORT_SYMBOL(drm_crtc_helper_set_mode); | |
541 | ||
542 | ||
6eebd6bb CW |
543 | static int |
544 | drm_crtc_helper_disable(struct drm_crtc *crtc) | |
545 | { | |
546 | struct drm_device *dev = crtc->dev; | |
547 | struct drm_connector *connector; | |
548 | struct drm_encoder *encoder; | |
549 | ||
550 | /* Decouple all encoders and their attached connectors from this crtc */ | |
551 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
552 | if (encoder->crtc != crtc) | |
553 | continue; | |
554 | ||
555 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
556 | if (connector->encoder != encoder) | |
557 | continue; | |
558 | ||
559 | connector->encoder = NULL; | |
560 | } | |
561 | } | |
562 | ||
563 | drm_helper_disable_unused_functions(dev); | |
564 | return 0; | |
565 | } | |
566 | ||
f453ba04 DA |
567 | /** |
568 | * drm_crtc_helper_set_config - set a new config from userspace | |
0d4ed4c8 | 569 | * @set: mode set configuration |
f453ba04 DA |
570 | * |
571 | * LOCKING: | |
572 | * Caller must hold mode config lock. | |
573 | * | |
0d4ed4c8 DV |
574 | * Setup a new configuration, provided by the upper layers (either an ioctl call |
575 | * from userspace or internally e.g. from the fbdev suppport code) in @set, and | |
576 | * enable it. This is the main helper functions for drivers that implement | |
577 | * kernel mode setting with the crtc helper functions and the assorted | |
578 | * ->prepare(), ->modeset() and ->commit() helper callbacks. | |
f453ba04 DA |
579 | * |
580 | * RETURNS: | |
0d4ed4c8 | 581 | * Returns 0 on success, -ERRNO on failure. |
f453ba04 DA |
582 | */ |
583 | int drm_crtc_helper_set_config(struct drm_mode_set *set) | |
584 | { | |
585 | struct drm_device *dev; | |
e67aae79 MM |
586 | struct drm_crtc *save_crtcs, *new_crtc, *crtc; |
587 | struct drm_encoder *save_encoders, *new_encoder, *encoder; | |
7bec756c | 588 | struct drm_framebuffer *old_fb = NULL; |
4cb72b17 JB |
589 | bool mode_changed = false; /* if true do a full mode set */ |
590 | bool fb_changed = false; /* if true and !mode_changed just do a flip */ | |
e67aae79 | 591 | struct drm_connector *save_connectors, *connector; |
f453ba04 DA |
592 | int count = 0, ro, fail = 0; |
593 | struct drm_crtc_helper_funcs *crtc_funcs; | |
c5006cfe | 594 | struct drm_mode_set save_set; |
4a1b0714 | 595 | int ret; |
bf9dc102 | 596 | int i; |
f453ba04 | 597 | |
58367ed6 | 598 | DRM_DEBUG_KMS("\n"); |
f453ba04 | 599 | |
e58de880 DV |
600 | BUG_ON(!set); |
601 | BUG_ON(!set->crtc); | |
602 | BUG_ON(!set->crtc->helper_private); | |
f453ba04 | 603 | |
e58de880 DV |
604 | /* Enforce sane interface api - has been abused by the fb helper. */ |
605 | BUG_ON(!set->mode && set->fb); | |
606 | BUG_ON(set->fb && set->num_connectors == 0); | |
f453ba04 DA |
607 | |
608 | crtc_funcs = set->crtc->helper_private; | |
609 | ||
ede3ff52 CW |
610 | if (!set->mode) |
611 | set->fb = NULL; | |
612 | ||
9440106b JG |
613 | if (set->fb) { |
614 | DRM_DEBUG_KMS("[CRTC:%d] [FB:%d] #connectors=%d (x y) (%i %i)\n", | |
615 | set->crtc->base.id, set->fb->base.id, | |
616 | (int)set->num_connectors, set->x, set->y); | |
617 | } else { | |
ede3ff52 | 618 | DRM_DEBUG_KMS("[CRTC:%d] [NOFB]\n", set->crtc->base.id); |
6eebd6bb | 619 | return drm_crtc_helper_disable(set->crtc); |
9440106b | 620 | } |
f453ba04 DA |
621 | |
622 | dev = set->crtc->dev; | |
623 | ||
e67aae79 MM |
624 | /* Allocate space for the backup of all (non-pointer) crtc, encoder and |
625 | * connector data. */ | |
626 | save_crtcs = kzalloc(dev->mode_config.num_crtc * | |
627 | sizeof(struct drm_crtc), GFP_KERNEL); | |
f453ba04 DA |
628 | if (!save_crtcs) |
629 | return -ENOMEM; | |
630 | ||
e67aae79 MM |
631 | save_encoders = kzalloc(dev->mode_config.num_encoder * |
632 | sizeof(struct drm_encoder), GFP_KERNEL); | |
f453ba04 DA |
633 | if (!save_encoders) { |
634 | kfree(save_crtcs); | |
635 | return -ENOMEM; | |
636 | } | |
637 | ||
e67aae79 MM |
638 | save_connectors = kzalloc(dev->mode_config.num_connector * |
639 | sizeof(struct drm_connector), GFP_KERNEL); | |
640 | if (!save_connectors) { | |
641 | kfree(save_crtcs); | |
642 | kfree(save_encoders); | |
643 | return -ENOMEM; | |
644 | } | |
645 | ||
646 | /* Copy data. Note that driver private data is not affected. | |
647 | * Should anything bad happen only the expected state is | |
648 | * restored, not the drivers personal bookkeeping. | |
649 | */ | |
650 | count = 0; | |
651 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
652 | save_crtcs[count++] = *crtc; | |
653 | } | |
654 | ||
655 | count = 0; | |
656 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
657 | save_encoders[count++] = *encoder; | |
658 | } | |
659 | ||
660 | count = 0; | |
661 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
662 | save_connectors[count++] = *connector; | |
663 | } | |
664 | ||
c5006cfe JB |
665 | save_set.crtc = set->crtc; |
666 | save_set.mode = &set->crtc->mode; | |
667 | save_set.x = set->crtc->x; | |
668 | save_set.y = set->crtc->y; | |
669 | save_set.fb = set->crtc->fb; | |
670 | ||
f453ba04 DA |
671 | /* We should be able to check here if the fb has the same properties |
672 | * and then just flip_or_move it */ | |
673 | if (set->crtc->fb != set->fb) { | |
712531bf | 674 | /* If we have no fb then treat it as a full mode set */ |
7bec756c | 675 | if (set->crtc->fb == NULL) { |
58367ed6 | 676 | DRM_DEBUG_KMS("crtc has no fb, full mode set\n"); |
712531bf | 677 | mode_changed = true; |
4cb72b17 JB |
678 | } else if (set->fb == NULL) { |
679 | mode_changed = true; | |
ce83adf7 LP |
680 | } else if (set->fb->pixel_format != |
681 | set->crtc->fb->pixel_format) { | |
682 | mode_changed = true; | |
8dff4742 | 683 | } else |
712531bf | 684 | fb_changed = true; |
f453ba04 DA |
685 | } |
686 | ||
687 | if (set->x != set->crtc->x || set->y != set->crtc->y) | |
712531bf | 688 | fb_changed = true; |
f453ba04 DA |
689 | |
690 | if (set->mode && !drm_mode_equal(set->mode, &set->crtc->mode)) { | |
58367ed6 | 691 | DRM_DEBUG_KMS("modes are different, full mode set\n"); |
f453ba04 DA |
692 | drm_mode_debug_printmodeline(&set->crtc->mode); |
693 | drm_mode_debug_printmodeline(set->mode); | |
712531bf | 694 | mode_changed = true; |
f453ba04 DA |
695 | } |
696 | ||
697 | /* a) traverse passed in connector list and get encoders for them */ | |
698 | count = 0; | |
699 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
700 | struct drm_connector_helper_funcs *connector_funcs = | |
701 | connector->helper_private; | |
f453ba04 DA |
702 | new_encoder = connector->encoder; |
703 | for (ro = 0; ro < set->num_connectors; ro++) { | |
704 | if (set->connectors[ro] == connector) { | |
705 | new_encoder = connector_funcs->best_encoder(connector); | |
706 | /* if we can't get an encoder for a connector | |
707 | we are setting now - then fail */ | |
708 | if (new_encoder == NULL) | |
709 | /* don't break so fail path works correct */ | |
710 | fail = 1; | |
711 | break; | |
25f397a4 DV |
712 | |
713 | if (connector->dpms != DRM_MODE_DPMS_ON) { | |
714 | DRM_DEBUG_KMS("connector dpms not on, full mode switch\n"); | |
715 | mode_changed = true; | |
716 | } | |
f453ba04 DA |
717 | } |
718 | } | |
719 | ||
720 | if (new_encoder != connector->encoder) { | |
58367ed6 | 721 | DRM_DEBUG_KMS("encoder changed, full mode switch\n"); |
712531bf | 722 | mode_changed = true; |
ff846ab7 MM |
723 | /* If the encoder is reused for another connector, then |
724 | * the appropriate crtc will be set later. | |
725 | */ | |
ff6fdbed MM |
726 | if (connector->encoder) |
727 | connector->encoder->crtc = NULL; | |
f453ba04 DA |
728 | connector->encoder = new_encoder; |
729 | } | |
730 | } | |
731 | ||
732 | if (fail) { | |
733 | ret = -EINVAL; | |
e67aae79 | 734 | goto fail; |
f453ba04 DA |
735 | } |
736 | ||
737 | count = 0; | |
738 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
739 | if (!connector->encoder) | |
740 | continue; | |
741 | ||
f453ba04 DA |
742 | if (connector->encoder->crtc == set->crtc) |
743 | new_crtc = NULL; | |
744 | else | |
745 | new_crtc = connector->encoder->crtc; | |
746 | ||
747 | for (ro = 0; ro < set->num_connectors; ro++) { | |
748 | if (set->connectors[ro] == connector) | |
749 | new_crtc = set->crtc; | |
750 | } | |
7bec756c JB |
751 | |
752 | /* Make sure the new CRTC will work with the encoder */ | |
753 | if (new_crtc && | |
754 | !drm_encoder_crtc_ok(connector->encoder, new_crtc)) { | |
755 | ret = -EINVAL; | |
e67aae79 | 756 | goto fail; |
7bec756c | 757 | } |
f453ba04 | 758 | if (new_crtc != connector->encoder->crtc) { |
58367ed6 | 759 | DRM_DEBUG_KMS("crtc changed, full mode switch\n"); |
712531bf | 760 | mode_changed = true; |
f453ba04 DA |
761 | connector->encoder->crtc = new_crtc; |
762 | } | |
9440106b JG |
763 | if (new_crtc) { |
764 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] to [CRTC:%d]\n", | |
765 | connector->base.id, drm_get_connector_name(connector), | |
766 | new_crtc->base.id); | |
767 | } else { | |
768 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] to [NOCRTC]\n", | |
769 | connector->base.id, drm_get_connector_name(connector)); | |
770 | } | |
f453ba04 DA |
771 | } |
772 | ||
773 | /* mode_set_base is not a required function */ | |
712531bf JB |
774 | if (fb_changed && !crtc_funcs->mode_set_base) |
775 | mode_changed = true; | |
f453ba04 | 776 | |
712531bf | 777 | if (mode_changed) { |
9334ef75 CW |
778 | set->crtc->enabled = drm_helper_crtc_in_use(set->crtc); |
779 | if (set->crtc->enabled) { | |
58367ed6 ZY |
780 | DRM_DEBUG_KMS("attempting to set mode from" |
781 | " userspace\n"); | |
f453ba04 | 782 | drm_mode_debug_printmodeline(set->mode); |
356ad3cd CW |
783 | old_fb = set->crtc->fb; |
784 | set->crtc->fb = set->fb; | |
f453ba04 | 785 | if (!drm_crtc_helper_set_mode(set->crtc, set->mode, |
3c4fdcfb KH |
786 | set->x, set->y, |
787 | old_fb)) { | |
9440106b JG |
788 | DRM_ERROR("failed to set mode on [CRTC:%d]\n", |
789 | set->crtc->base.id); | |
0ba41e44 | 790 | set->crtc->fb = old_fb; |
f453ba04 | 791 | ret = -EINVAL; |
e67aae79 | 792 | goto fail; |
f453ba04 | 793 | } |
25f397a4 DV |
794 | DRM_DEBUG_KMS("Setting connector DPMS state to on\n"); |
795 | for (i = 0; i < set->num_connectors; i++) { | |
796 | DRM_DEBUG_KMS("\t[CONNECTOR:%d:%s] set DPMS on\n", set->connectors[i]->base.id, | |
797 | drm_get_connector_name(set->connectors[i])); | |
798 | set->connectors[i]->funcs->dpms(set->connectors[i], DRM_MODE_DPMS_ON); | |
799 | } | |
f453ba04 DA |
800 | } |
801 | drm_helper_disable_unused_functions(dev); | |
712531bf | 802 | } else if (fb_changed) { |
9b1596af BS |
803 | set->crtc->x = set->x; |
804 | set->crtc->y = set->y; | |
805 | ||
3c4fdcfb | 806 | old_fb = set->crtc->fb; |
f453ba04 DA |
807 | if (set->crtc->fb != set->fb) |
808 | set->crtc->fb = set->fb; | |
5c3b82e2 CW |
809 | ret = crtc_funcs->mode_set_base(set->crtc, |
810 | set->x, set->y, old_fb); | |
0ba41e44 CW |
811 | if (ret != 0) { |
812 | set->crtc->fb = old_fb; | |
e67aae79 | 813 | goto fail; |
0ba41e44 | 814 | } |
f453ba04 DA |
815 | } |
816 | ||
e67aae79 | 817 | kfree(save_connectors); |
f453ba04 DA |
818 | kfree(save_encoders); |
819 | kfree(save_crtcs); | |
820 | return 0; | |
821 | ||
e67aae79 MM |
822 | fail: |
823 | /* Restore all previous data. */ | |
f453ba04 | 824 | count = 0; |
e67aae79 MM |
825 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
826 | *crtc = save_crtcs[count++]; | |
827 | } | |
e62fb64e | 828 | |
e67aae79 MM |
829 | count = 0; |
830 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
831 | *encoder = save_encoders[count++]; | |
e62fb64e | 832 | } |
e67aae79 | 833 | |
f453ba04 DA |
834 | count = 0; |
835 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
e67aae79 | 836 | *connector = save_connectors[count++]; |
f453ba04 | 837 | } |
e67aae79 | 838 | |
c5006cfe JB |
839 | /* Try to restore the config */ |
840 | if (mode_changed && | |
841 | !drm_crtc_helper_set_mode(save_set.crtc, save_set.mode, save_set.x, | |
842 | save_set.y, save_set.fb)) | |
843 | DRM_ERROR("failed to restore config after modeset failure\n"); | |
844 | ||
e67aae79 | 845 | kfree(save_connectors); |
f453ba04 | 846 | kfree(save_encoders); |
e67aae79 | 847 | kfree(save_crtcs); |
f453ba04 DA |
848 | return ret; |
849 | } | |
850 | EXPORT_SYMBOL(drm_crtc_helper_set_config); | |
851 | ||
c9fb15f6 KP |
852 | static int drm_helper_choose_encoder_dpms(struct drm_encoder *encoder) |
853 | { | |
854 | int dpms = DRM_MODE_DPMS_OFF; | |
855 | struct drm_connector *connector; | |
856 | struct drm_device *dev = encoder->dev; | |
857 | ||
858 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) | |
859 | if (connector->encoder == encoder) | |
860 | if (connector->dpms < dpms) | |
861 | dpms = connector->dpms; | |
862 | return dpms; | |
863 | } | |
864 | ||
3b336ec4 SP |
865 | /* Helper which handles bridge ordering around encoder dpms */ |
866 | static void drm_helper_encoder_dpms(struct drm_encoder *encoder, int mode) | |
867 | { | |
868 | struct drm_bridge *bridge = encoder->bridge; | |
869 | struct drm_encoder_helper_funcs *encoder_funcs; | |
870 | ||
871 | if (bridge) { | |
872 | if (mode == DRM_MODE_DPMS_ON) | |
873 | bridge->funcs->pre_enable(bridge); | |
874 | else | |
875 | bridge->funcs->disable(bridge); | |
876 | } | |
877 | ||
878 | encoder_funcs = encoder->helper_private; | |
879 | if (encoder_funcs->dpms) | |
880 | encoder_funcs->dpms(encoder, mode); | |
881 | ||
882 | if (bridge) { | |
883 | if (mode == DRM_MODE_DPMS_ON) | |
884 | bridge->funcs->enable(bridge); | |
885 | else | |
886 | bridge->funcs->post_disable(bridge); | |
887 | } | |
888 | } | |
889 | ||
c9fb15f6 KP |
890 | static int drm_helper_choose_crtc_dpms(struct drm_crtc *crtc) |
891 | { | |
892 | int dpms = DRM_MODE_DPMS_OFF; | |
893 | struct drm_connector *connector; | |
894 | struct drm_device *dev = crtc->dev; | |
895 | ||
896 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) | |
897 | if (connector->encoder && connector->encoder->crtc == crtc) | |
898 | if (connector->dpms < dpms) | |
899 | dpms = connector->dpms; | |
900 | return dpms; | |
901 | } | |
902 | ||
903 | /** | |
0d4ed4c8 DV |
904 | * drm_helper_connector_dpms() - connector dpms helper implementation |
905 | * @connector: affected connector | |
906 | * @mode: DPMS mode | |
c9fb15f6 | 907 | * |
0d4ed4c8 DV |
908 | * This is the main helper function provided by the crtc helper framework for |
909 | * implementing the DPMS connector attribute. It computes the new desired DPMS | |
910 | * state for all encoders and crtcs in the output mesh and calls the ->dpms() | |
911 | * callback provided by the driver appropriately. | |
c9fb15f6 KP |
912 | */ |
913 | void drm_helper_connector_dpms(struct drm_connector *connector, int mode) | |
914 | { | |
915 | struct drm_encoder *encoder = connector->encoder; | |
916 | struct drm_crtc *crtc = encoder ? encoder->crtc : NULL; | |
3b336ec4 | 917 | int old_dpms, encoder_dpms = DRM_MODE_DPMS_OFF; |
c9fb15f6 KP |
918 | |
919 | if (mode == connector->dpms) | |
920 | return; | |
921 | ||
922 | old_dpms = connector->dpms; | |
923 | connector->dpms = mode; | |
924 | ||
3b336ec4 SP |
925 | if (encoder) |
926 | encoder_dpms = drm_helper_choose_encoder_dpms(encoder); | |
927 | ||
c9fb15f6 KP |
928 | /* from off to on, do crtc then encoder */ |
929 | if (mode < old_dpms) { | |
930 | if (crtc) { | |
931 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; | |
932 | if (crtc_funcs->dpms) | |
933 | (*crtc_funcs->dpms) (crtc, | |
934 | drm_helper_choose_crtc_dpms(crtc)); | |
935 | } | |
3b336ec4 SP |
936 | if (encoder) |
937 | drm_helper_encoder_dpms(encoder, encoder_dpms); | |
c9fb15f6 KP |
938 | } |
939 | ||
940 | /* from on to off, do encoder then crtc */ | |
941 | if (mode > old_dpms) { | |
3b336ec4 SP |
942 | if (encoder) |
943 | drm_helper_encoder_dpms(encoder, encoder_dpms); | |
c9fb15f6 KP |
944 | if (crtc) { |
945 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; | |
946 | if (crtc_funcs->dpms) | |
947 | (*crtc_funcs->dpms) (crtc, | |
948 | drm_helper_choose_crtc_dpms(crtc)); | |
949 | } | |
950 | } | |
951 | ||
952 | return; | |
953 | } | |
954 | EXPORT_SYMBOL(drm_helper_connector_dpms); | |
955 | ||
f453ba04 | 956 | int drm_helper_mode_fill_fb_struct(struct drm_framebuffer *fb, |
308e5bcb | 957 | struct drm_mode_fb_cmd2 *mode_cmd) |
f453ba04 | 958 | { |
01f2c773 VS |
959 | int i; |
960 | ||
f453ba04 DA |
961 | fb->width = mode_cmd->width; |
962 | fb->height = mode_cmd->height; | |
01f2c773 VS |
963 | for (i = 0; i < 4; i++) { |
964 | fb->pitches[i] = mode_cmd->pitches[i]; | |
965 | fb->offsets[i] = mode_cmd->offsets[i]; | |
966 | } | |
248dbc23 | 967 | drm_fb_get_bpp_depth(mode_cmd->pixel_format, &fb->depth, |
308e5bcb JB |
968 | &fb->bits_per_pixel); |
969 | fb->pixel_format = mode_cmd->pixel_format; | |
f453ba04 DA |
970 | |
971 | return 0; | |
972 | } | |
973 | EXPORT_SYMBOL(drm_helper_mode_fill_fb_struct); | |
974 | ||
975 | int drm_helper_resume_force_mode(struct drm_device *dev) | |
976 | { | |
977 | struct drm_crtc *crtc; | |
89347bb8 | 978 | struct drm_encoder *encoder; |
89347bb8 | 979 | struct drm_crtc_helper_funcs *crtc_funcs; |
3b336ec4 | 980 | int ret, encoder_dpms; |
f453ba04 DA |
981 | |
982 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
983 | ||
984 | if (!crtc->enabled) | |
985 | continue; | |
986 | ||
3c4fdcfb KH |
987 | ret = drm_crtc_helper_set_mode(crtc, &crtc->mode, |
988 | crtc->x, crtc->y, crtc->fb); | |
f453ba04 DA |
989 | |
990 | if (ret == false) | |
991 | DRM_ERROR("failed to set mode on crtc %p\n", crtc); | |
89347bb8 DJ |
992 | |
993 | /* Turn off outputs that were already powered off */ | |
994 | if (drm_helper_choose_crtc_dpms(crtc)) { | |
995 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
996 | ||
997 | if(encoder->crtc != crtc) | |
998 | continue; | |
999 | ||
3b336ec4 SP |
1000 | encoder_dpms = drm_helper_choose_encoder_dpms( |
1001 | encoder); | |
1002 | ||
1003 | drm_helper_encoder_dpms(encoder, encoder_dpms); | |
89347bb8 | 1004 | } |
817e631e CW |
1005 | |
1006 | crtc_funcs = crtc->helper_private; | |
1007 | if (crtc_funcs->dpms) | |
1008 | (*crtc_funcs->dpms) (crtc, | |
1009 | drm_helper_choose_crtc_dpms(crtc)); | |
89347bb8 | 1010 | } |
f453ba04 | 1011 | } |
af4fcb57 ZY |
1012 | /* disable the unused connectors while restoring the modesetting */ |
1013 | drm_helper_disable_unused_functions(dev); | |
f453ba04 DA |
1014 | return 0; |
1015 | } | |
1016 | EXPORT_SYMBOL(drm_helper_resume_force_mode); | |
eb1f8e4f | 1017 | |
3d3683f0 DV |
1018 | void drm_kms_helper_hotplug_event(struct drm_device *dev) |
1019 | { | |
1020 | /* send a uevent + call fbdev */ | |
1021 | drm_sysfs_hotplug_event(dev); | |
1022 | if (dev->mode_config.funcs->output_poll_changed) | |
1023 | dev->mode_config.funcs->output_poll_changed(dev); | |
1024 | } | |
1025 | EXPORT_SYMBOL(drm_kms_helper_hotplug_event); | |
1026 | ||
eb1f8e4f | 1027 | #define DRM_OUTPUT_POLL_PERIOD (10*HZ) |
991ea75c | 1028 | static void output_poll_execute(struct work_struct *work) |
eb1f8e4f | 1029 | { |
991ea75c TH |
1030 | struct delayed_work *delayed_work = to_delayed_work(work); |
1031 | struct drm_device *dev = container_of(delayed_work, struct drm_device, mode_config.output_poll_work); | |
eb1f8e4f | 1032 | struct drm_connector *connector; |
c5027dec | 1033 | enum drm_connector_status old_status; |
d482e5fa | 1034 | bool repoll = false, changed = false; |
eb1f8e4f | 1035 | |
e58f637b CW |
1036 | if (!drm_kms_helper_poll) |
1037 | return; | |
1038 | ||
eb1f8e4f DA |
1039 | mutex_lock(&dev->mode_config.mutex); |
1040 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
1041 | ||
11e68685 DV |
1042 | /* Ignore forced connectors. */ |
1043 | if (connector->force) | |
1044 | continue; | |
1045 | ||
816da85a DV |
1046 | /* Ignore HPD capable connectors and connectors where we don't |
1047 | * want any hotplug detection at all for polling. */ | |
1048 | if (!connector->polled || connector->polled == DRM_CONNECTOR_POLL_HPD) | |
eb1f8e4f DA |
1049 | continue; |
1050 | ||
a4f968d8 | 1051 | repoll = true; |
eb1f8e4f DA |
1052 | |
1053 | old_status = connector->status; | |
1054 | /* if we are connected and don't want to poll for disconnect | |
1055 | skip it */ | |
1056 | if (old_status == connector_status_connected && | |
816da85a | 1057 | !(connector->polled & DRM_CONNECTOR_POLL_DISCONNECT)) |
eb1f8e4f DA |
1058 | continue; |
1059 | ||
c5027dec | 1060 | connector->status = connector->funcs->detect(connector, false); |
b2dfcae3 LD |
1061 | if (old_status != connector->status) { |
1062 | const char *old, *new; | |
1063 | ||
1064 | old = drm_get_connector_status_name(old_status); | |
1065 | new = drm_get_connector_status_name(connector->status); | |
1066 | ||
1067 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] " | |
1068 | "status updated from %s to %s\n", | |
1069 | connector->base.id, | |
1070 | drm_get_connector_name(connector), | |
1071 | old, new); | |
1072 | ||
eb1f8e4f | 1073 | changed = true; |
b2dfcae3 | 1074 | } |
eb1f8e4f DA |
1075 | } |
1076 | ||
1077 | mutex_unlock(&dev->mode_config.mutex); | |
1078 | ||
3d3683f0 DV |
1079 | if (changed) |
1080 | drm_kms_helper_hotplug_event(dev); | |
eb1f8e4f | 1081 | |
9a919c46 | 1082 | if (repoll) |
3b07e9ca | 1083 | schedule_delayed_work(delayed_work, DRM_OUTPUT_POLL_PERIOD); |
eb1f8e4f DA |
1084 | } |
1085 | ||
fbf81762 DA |
1086 | void drm_kms_helper_poll_disable(struct drm_device *dev) |
1087 | { | |
1088 | if (!dev->mode_config.poll_enabled) | |
1089 | return; | |
991ea75c | 1090 | cancel_delayed_work_sync(&dev->mode_config.output_poll_work); |
fbf81762 DA |
1091 | } |
1092 | EXPORT_SYMBOL(drm_kms_helper_poll_disable); | |
1093 | ||
1094 | void drm_kms_helper_poll_enable(struct drm_device *dev) | |
eb1f8e4f | 1095 | { |
eb1f8e4f | 1096 | bool poll = false; |
fbf81762 | 1097 | struct drm_connector *connector; |
eb1f8e4f | 1098 | |
e58f637b CW |
1099 | if (!dev->mode_config.poll_enabled || !drm_kms_helper_poll) |
1100 | return; | |
1101 | ||
eb1f8e4f | 1102 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
a4f968d8 DV |
1103 | if (connector->polled & (DRM_CONNECTOR_POLL_CONNECT | |
1104 | DRM_CONNECTOR_POLL_DISCONNECT)) | |
eb1f8e4f DA |
1105 | poll = true; |
1106 | } | |
eb1f8e4f | 1107 | |
9a919c46 | 1108 | if (poll) |
3b07e9ca | 1109 | schedule_delayed_work(&dev->mode_config.output_poll_work, DRM_OUTPUT_POLL_PERIOD); |
eb1f8e4f | 1110 | } |
fbf81762 DA |
1111 | EXPORT_SYMBOL(drm_kms_helper_poll_enable); |
1112 | ||
1113 | void drm_kms_helper_poll_init(struct drm_device *dev) | |
1114 | { | |
991ea75c | 1115 | INIT_DELAYED_WORK(&dev->mode_config.output_poll_work, output_poll_execute); |
fbf81762 DA |
1116 | dev->mode_config.poll_enabled = true; |
1117 | ||
1118 | drm_kms_helper_poll_enable(dev); | |
1119 | } | |
eb1f8e4f DA |
1120 | EXPORT_SYMBOL(drm_kms_helper_poll_init); |
1121 | ||
1122 | void drm_kms_helper_poll_fini(struct drm_device *dev) | |
1123 | { | |
fbf81762 | 1124 | drm_kms_helper_poll_disable(dev); |
eb1f8e4f DA |
1125 | } |
1126 | EXPORT_SYMBOL(drm_kms_helper_poll_fini); | |
1127 | ||
69787f7d | 1128 | void drm_helper_hpd_irq_event(struct drm_device *dev) |
eb1f8e4f | 1129 | { |
816da85a DV |
1130 | struct drm_connector *connector; |
1131 | enum drm_connector_status old_status; | |
1132 | bool changed = false; | |
1133 | ||
eb1f8e4f DA |
1134 | if (!dev->mode_config.poll_enabled) |
1135 | return; | |
e58f637b | 1136 | |
816da85a DV |
1137 | mutex_lock(&dev->mode_config.mutex); |
1138 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
1139 | ||
1140 | /* Only handle HPD capable connectors. */ | |
1141 | if (!(connector->polled & DRM_CONNECTOR_POLL_HPD)) | |
1142 | continue; | |
1143 | ||
1144 | old_status = connector->status; | |
1145 | ||
1146 | connector->status = connector->funcs->detect(connector, false); | |
ed7951dc | 1147 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] status updated from %s to %s\n", |
816da85a DV |
1148 | connector->base.id, |
1149 | drm_get_connector_name(connector), | |
ed7951dc LD |
1150 | drm_get_connector_status_name(old_status), |
1151 | drm_get_connector_status_name(connector->status)); | |
816da85a DV |
1152 | if (old_status != connector->status) |
1153 | changed = true; | |
1154 | } | |
1155 | ||
1156 | mutex_unlock(&dev->mode_config.mutex); | |
1157 | ||
1158 | if (changed) | |
1159 | drm_kms_helper_hotplug_event(dev); | |
1160 | } | |
eb1f8e4f | 1161 | EXPORT_SYMBOL(drm_helper_hpd_irq_event); |