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 | ||
32 | #include "drmP.h" | |
33 | #include "drm_crtc.h" | |
34 | #include "drm_crtc_helper.h" | |
d50ba256 | 35 | #include "drm_fb_helper.h" |
f453ba04 | 36 | |
6714977b | 37 | static void drm_mode_validate_flag(struct drm_connector *connector, |
38 | int flags) | |
39 | { | |
40 | struct drm_display_mode *mode, *t; | |
41 | ||
42 | if (flags == (DRM_MODE_FLAG_DBLSCAN | DRM_MODE_FLAG_INTERLACE)) | |
43 | return; | |
44 | ||
45 | list_for_each_entry_safe(mode, t, &connector->modes, head) { | |
46 | if ((mode->flags & DRM_MODE_FLAG_INTERLACE) && | |
47 | !(flags & DRM_MODE_FLAG_INTERLACE)) | |
48 | mode->status = MODE_NO_INTERLACE; | |
49 | if ((mode->flags & DRM_MODE_FLAG_DBLSCAN) && | |
50 | !(flags & DRM_MODE_FLAG_DBLSCAN)) | |
51 | mode->status = MODE_NO_DBLESCAN; | |
52 | } | |
53 | ||
54 | return; | |
55 | } | |
56 | ||
f453ba04 | 57 | /** |
38651674 | 58 | * drm_helper_probe_single_connector_modes - get complete set of display modes |
f453ba04 DA |
59 | * @dev: DRM device |
60 | * @maxX: max width for modes | |
61 | * @maxY: max height for modes | |
62 | * | |
63 | * LOCKING: | |
64 | * Caller must hold mode config lock. | |
65 | * | |
66 | * Based on @dev's mode_config layout, scan all the connectors and try to detect | |
67 | * modes on them. Modes will first be added to the connector's probed_modes | |
68 | * list, then culled (based on validity and the @maxX, @maxY parameters) and | |
69 | * put into the normal modes list. | |
70 | * | |
71 | * Intended to be used either at bootup time or when major configuration | |
72 | * changes have occurred. | |
73 | * | |
74 | * FIXME: take into account monitor limits | |
40a518d9 JB |
75 | * |
76 | * RETURNS: | |
77 | * Number of modes found on @connector. | |
f453ba04 | 78 | */ |
40a518d9 JB |
79 | int drm_helper_probe_single_connector_modes(struct drm_connector *connector, |
80 | uint32_t maxX, uint32_t maxY) | |
f453ba04 DA |
81 | { |
82 | struct drm_device *dev = connector->dev; | |
83 | struct drm_display_mode *mode, *t; | |
84 | struct drm_connector_helper_funcs *connector_funcs = | |
85 | connector->helper_private; | |
40a518d9 | 86 | int count = 0; |
6714977b | 87 | int mode_flags = 0; |
f453ba04 | 88 | |
58367ed6 | 89 | DRM_DEBUG_KMS("%s\n", drm_get_connector_name(connector)); |
f453ba04 DA |
90 | /* set all modes to the unverified state */ |
91 | list_for_each_entry_safe(mode, t, &connector->modes, head) | |
92 | mode->status = MODE_UNVERIFIED; | |
93 | ||
d50ba256 DA |
94 | if (connector->force) { |
95 | if (connector->force == DRM_FORCE_ON) | |
96 | connector->status = connector_status_connected; | |
97 | else | |
98 | connector->status = connector_status_disconnected; | |
99 | if (connector->funcs->force) | |
100 | connector->funcs->force(connector); | |
101 | } else | |
102 | connector->status = connector->funcs->detect(connector); | |
f453ba04 DA |
103 | |
104 | if (connector->status == connector_status_disconnected) { | |
58367ed6 | 105 | DRM_DEBUG_KMS("%s is disconnected\n", |
f453ba04 | 106 | drm_get_connector_name(connector)); |
72539832 | 107 | drm_mode_connector_update_edid_property(connector, NULL); |
620f3781 | 108 | goto prune; |
f453ba04 DA |
109 | } |
110 | ||
40a518d9 | 111 | count = (*connector_funcs->get_modes)(connector); |
50fe4cfd | 112 | if (!count) { |
9632b41f | 113 | count = drm_add_modes_noedid(connector, 1024, 768); |
50fe4cfd | 114 | if (!count) |
115 | return 0; | |
116 | } | |
f453ba04 | 117 | |
40a518d9 | 118 | drm_mode_connector_list_update(connector); |
f453ba04 DA |
119 | |
120 | if (maxX && maxY) | |
121 | drm_mode_validate_size(dev, &connector->modes, maxX, | |
122 | maxY, 0); | |
6714977b | 123 | |
124 | if (connector->interlace_allowed) | |
125 | mode_flags |= DRM_MODE_FLAG_INTERLACE; | |
126 | if (connector->doublescan_allowed) | |
127 | mode_flags |= DRM_MODE_FLAG_DBLSCAN; | |
128 | drm_mode_validate_flag(connector, mode_flags); | |
129 | ||
f453ba04 DA |
130 | list_for_each_entry_safe(mode, t, &connector->modes, head) { |
131 | if (mode->status == MODE_OK) | |
132 | mode->status = connector_funcs->mode_valid(connector, | |
133 | mode); | |
134 | } | |
135 | ||
620f3781 | 136 | prune: |
f453ba04 DA |
137 | drm_mode_prune_invalid(dev, &connector->modes, true); |
138 | ||
40a518d9 JB |
139 | if (list_empty(&connector->modes)) |
140 | return 0; | |
f453ba04 DA |
141 | |
142 | drm_mode_sort(&connector->modes); | |
143 | ||
58367ed6 ZY |
144 | DRM_DEBUG_KMS("Probed modes for %s\n", |
145 | drm_get_connector_name(connector)); | |
f453ba04 DA |
146 | list_for_each_entry_safe(mode, t, &connector->modes, head) { |
147 | mode->vrefresh = drm_mode_vrefresh(mode); | |
148 | ||
149 | drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V); | |
150 | drm_mode_debug_printmodeline(mode); | |
151 | } | |
40a518d9 JB |
152 | |
153 | return count; | |
f453ba04 DA |
154 | } |
155 | EXPORT_SYMBOL(drm_helper_probe_single_connector_modes); | |
156 | ||
c9fb15f6 KP |
157 | /** |
158 | * drm_helper_encoder_in_use - check if a given encoder is in use | |
159 | * @encoder: encoder to check | |
160 | * | |
161 | * LOCKING: | |
162 | * Caller must hold mode config lock. | |
163 | * | |
164 | * Walk @encoders's DRM device's mode_config and see if it's in use. | |
165 | * | |
166 | * RETURNS: | |
167 | * True if @encoder is part of the mode_config, false otherwise. | |
168 | */ | |
169 | bool drm_helper_encoder_in_use(struct drm_encoder *encoder) | |
170 | { | |
171 | struct drm_connector *connector; | |
172 | struct drm_device *dev = encoder->dev; | |
173 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) | |
174 | if (connector->encoder == encoder) | |
175 | return true; | |
176 | return false; | |
177 | } | |
178 | EXPORT_SYMBOL(drm_helper_encoder_in_use); | |
179 | ||
f453ba04 DA |
180 | /** |
181 | * drm_helper_crtc_in_use - check if a given CRTC is in a mode_config | |
182 | * @crtc: CRTC to check | |
183 | * | |
184 | * LOCKING: | |
185 | * Caller must hold mode config lock. | |
186 | * | |
187 | * Walk @crtc's DRM device's mode_config and see if it's in use. | |
188 | * | |
189 | * RETURNS: | |
190 | * True if @crtc is part of the mode_config, false otherwise. | |
191 | */ | |
192 | bool drm_helper_crtc_in_use(struct drm_crtc *crtc) | |
193 | { | |
194 | struct drm_encoder *encoder; | |
195 | struct drm_device *dev = crtc->dev; | |
196 | /* FIXME: Locking around list access? */ | |
197 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) | |
c9fb15f6 | 198 | if (encoder->crtc == crtc && drm_helper_encoder_in_use(encoder)) |
f453ba04 DA |
199 | return true; |
200 | return false; | |
201 | } | |
202 | EXPORT_SYMBOL(drm_helper_crtc_in_use); | |
203 | ||
204 | /** | |
89347bb8 | 205 | * drm_helper_disable_unused_functions - disable unused objects |
f453ba04 DA |
206 | * @dev: DRM device |
207 | * | |
208 | * LOCKING: | |
209 | * Caller must hold mode config lock. | |
210 | * | |
211 | * If an connector or CRTC isn't part of @dev's mode_config, it can be disabled | |
212 | * by calling its dpms function, which should power it off. | |
213 | */ | |
214 | void drm_helper_disable_unused_functions(struct drm_device *dev) | |
215 | { | |
216 | struct drm_encoder *encoder; | |
a3a0544b | 217 | struct drm_connector *connector; |
f453ba04 DA |
218 | struct drm_encoder_helper_funcs *encoder_funcs; |
219 | struct drm_crtc *crtc; | |
220 | ||
a3a0544b DA |
221 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
222 | if (!connector->encoder) | |
223 | continue; | |
224 | if (connector->status == connector_status_disconnected) | |
225 | connector->encoder = NULL; | |
226 | } | |
227 | ||
f453ba04 DA |
228 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
229 | encoder_funcs = encoder->helper_private; | |
a3a0544b DA |
230 | if (!drm_helper_encoder_in_use(encoder)) { |
231 | if (encoder_funcs->disable) | |
232 | (*encoder_funcs->disable)(encoder); | |
233 | else | |
234 | (*encoder_funcs->dpms)(encoder, DRM_MODE_DPMS_OFF); | |
9c552dd7 DA |
235 | /* disconnector encoder from any connector */ |
236 | encoder->crtc = NULL; | |
a3a0544b | 237 | } |
f453ba04 DA |
238 | } |
239 | ||
240 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
241 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; | |
242 | crtc->enabled = drm_helper_crtc_in_use(crtc); | |
243 | if (!crtc->enabled) { | |
5c8d7171 AD |
244 | if (crtc_funcs->disable) |
245 | (*crtc_funcs->disable)(crtc); | |
246 | else | |
247 | (*crtc_funcs->dpms)(crtc, DRM_MODE_DPMS_OFF); | |
f453ba04 DA |
248 | crtc->fb = NULL; |
249 | } | |
250 | } | |
251 | } | |
252 | EXPORT_SYMBOL(drm_helper_disable_unused_functions); | |
253 | ||
7bec756c JB |
254 | /** |
255 | * drm_encoder_crtc_ok - can a given crtc drive a given encoder? | |
256 | * @encoder: encoder to test | |
257 | * @crtc: crtc to test | |
258 | * | |
259 | * Return false if @encoder can't be driven by @crtc, true otherwise. | |
260 | */ | |
261 | static bool drm_encoder_crtc_ok(struct drm_encoder *encoder, | |
262 | struct drm_crtc *crtc) | |
263 | { | |
264 | struct drm_device *dev; | |
265 | struct drm_crtc *tmp; | |
266 | int crtc_mask = 1; | |
267 | ||
268 | WARN(!crtc, "checking null crtc?"); | |
269 | ||
270 | dev = crtc->dev; | |
271 | ||
272 | list_for_each_entry(tmp, &dev->mode_config.crtc_list, head) { | |
273 | if (tmp == crtc) | |
274 | break; | |
275 | crtc_mask <<= 1; | |
276 | } | |
277 | ||
278 | if (encoder->possible_crtcs & crtc_mask) | |
279 | return true; | |
280 | return false; | |
281 | } | |
282 | ||
283 | /* | |
284 | * Check the CRTC we're going to map each output to vs. its current | |
285 | * CRTC. If they don't match, we have to disable the output and the CRTC | |
286 | * since the driver will have to re-route things. | |
287 | */ | |
288 | static void | |
289 | drm_crtc_prepare_encoders(struct drm_device *dev) | |
290 | { | |
291 | struct drm_encoder_helper_funcs *encoder_funcs; | |
292 | struct drm_encoder *encoder; | |
293 | ||
294 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
295 | encoder_funcs = encoder->helper_private; | |
296 | /* Disable unused encoders */ | |
297 | if (encoder->crtc == NULL) | |
298 | (*encoder_funcs->dpms)(encoder, DRM_MODE_DPMS_OFF); | |
299 | /* Disable encoders whose CRTC is about to change */ | |
300 | if (encoder_funcs->get_crtc && | |
301 | encoder->crtc != (*encoder_funcs->get_crtc)(encoder)) | |
302 | (*encoder_funcs->dpms)(encoder, DRM_MODE_DPMS_OFF); | |
303 | } | |
304 | } | |
305 | ||
f453ba04 DA |
306 | /** |
307 | * drm_crtc_set_mode - set a mode | |
308 | * @crtc: CRTC to program | |
309 | * @mode: mode to use | |
310 | * @x: width of mode | |
311 | * @y: height of mode | |
312 | * | |
313 | * LOCKING: | |
314 | * Caller must hold mode config lock. | |
315 | * | |
316 | * Try to set @mode on @crtc. Give @crtc and its associated connectors a chance | |
317 | * to fixup or reject the mode prior to trying to set it. | |
318 | * | |
319 | * RETURNS: | |
320 | * True if the mode was set successfully, or false otherwise. | |
321 | */ | |
322 | bool drm_crtc_helper_set_mode(struct drm_crtc *crtc, | |
323 | struct drm_display_mode *mode, | |
3c4fdcfb KH |
324 | int x, int y, |
325 | struct drm_framebuffer *old_fb) | |
f453ba04 DA |
326 | { |
327 | struct drm_device *dev = crtc->dev; | |
328 | struct drm_display_mode *adjusted_mode, saved_mode; | |
329 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; | |
330 | struct drm_encoder_helper_funcs *encoder_funcs; | |
331 | int saved_x, saved_y; | |
332 | struct drm_encoder *encoder; | |
333 | bool ret = true; | |
334 | ||
335 | adjusted_mode = drm_mode_duplicate(dev, mode); | |
336 | ||
337 | crtc->enabled = drm_helper_crtc_in_use(crtc); | |
338 | ||
339 | if (!crtc->enabled) | |
340 | return true; | |
341 | ||
342 | saved_mode = crtc->mode; | |
343 | saved_x = crtc->x; | |
344 | saved_y = crtc->y; | |
345 | ||
346 | /* Update crtc values up front so the driver can rely on them for mode | |
347 | * setting. | |
348 | */ | |
349 | crtc->mode = *mode; | |
350 | crtc->x = x; | |
351 | crtc->y = y; | |
352 | ||
f453ba04 DA |
353 | /* Pass our mode to the connectors and the CRTC to give them a chance to |
354 | * adjust it according to limitations or connector properties, and also | |
355 | * a chance to reject the mode entirely. | |
356 | */ | |
357 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
358 | ||
359 | if (encoder->crtc != crtc) | |
360 | continue; | |
361 | encoder_funcs = encoder->helper_private; | |
362 | if (!(ret = encoder_funcs->mode_fixup(encoder, mode, | |
363 | adjusted_mode))) { | |
364 | goto done; | |
365 | } | |
366 | } | |
367 | ||
368 | if (!(ret = crtc_funcs->mode_fixup(crtc, mode, adjusted_mode))) { | |
369 | goto done; | |
370 | } | |
371 | ||
372 | /* Prepare the encoders and CRTCs before setting the mode. */ | |
373 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
374 | ||
375 | if (encoder->crtc != crtc) | |
376 | continue; | |
377 | encoder_funcs = encoder->helper_private; | |
378 | /* Disable the encoders as the first thing we do. */ | |
379 | encoder_funcs->prepare(encoder); | |
380 | } | |
381 | ||
7bec756c JB |
382 | drm_crtc_prepare_encoders(dev); |
383 | ||
f453ba04 DA |
384 | crtc_funcs->prepare(crtc); |
385 | ||
386 | /* Set up the DPLL and any encoders state that needs to adjust or depend | |
387 | * on the DPLL. | |
388 | */ | |
5c3b82e2 CW |
389 | ret = !crtc_funcs->mode_set(crtc, mode, adjusted_mode, x, y, old_fb); |
390 | if (!ret) | |
391 | goto done; | |
f453ba04 DA |
392 | |
393 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
394 | ||
395 | if (encoder->crtc != crtc) | |
396 | continue; | |
397 | ||
ef145877 | 398 | DRM_DEBUG("%s: set mode %s %x\n", drm_get_encoder_name(encoder), |
f453ba04 DA |
399 | mode->name, mode->base.id); |
400 | encoder_funcs = encoder->helper_private; | |
401 | encoder_funcs->mode_set(encoder, mode, adjusted_mode); | |
402 | } | |
403 | ||
404 | /* Now enable the clocks, plane, pipe, and connectors that we set up. */ | |
405 | crtc_funcs->commit(crtc); | |
406 | ||
407 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
408 | ||
409 | if (encoder->crtc != crtc) | |
410 | continue; | |
411 | ||
412 | encoder_funcs = encoder->helper_private; | |
413 | encoder_funcs->commit(encoder); | |
414 | ||
415 | } | |
416 | ||
417 | /* XXX free adjustedmode */ | |
418 | drm_mode_destroy(dev, adjusted_mode); | |
419 | /* FIXME: add subpixel order */ | |
420 | done: | |
421 | if (!ret) { | |
422 | crtc->mode = saved_mode; | |
423 | crtc->x = saved_x; | |
424 | crtc->y = saved_y; | |
425 | } | |
426 | ||
427 | return ret; | |
428 | } | |
429 | EXPORT_SYMBOL(drm_crtc_helper_set_mode); | |
430 | ||
431 | ||
432 | /** | |
433 | * drm_crtc_helper_set_config - set a new config from userspace | |
434 | * @crtc: CRTC to setup | |
435 | * @crtc_info: user provided configuration | |
436 | * @new_mode: new mode to set | |
437 | * @connector_set: set of connectors for the new config | |
438 | * @fb: new framebuffer | |
439 | * | |
440 | * LOCKING: | |
441 | * Caller must hold mode config lock. | |
442 | * | |
443 | * Setup a new configuration, provided by the user in @crtc_info, and enable | |
444 | * it. | |
445 | * | |
446 | * RETURNS: | |
447 | * Zero. (FIXME) | |
448 | */ | |
449 | int drm_crtc_helper_set_config(struct drm_mode_set *set) | |
450 | { | |
451 | struct drm_device *dev; | |
e67aae79 MM |
452 | struct drm_crtc *save_crtcs, *new_crtc, *crtc; |
453 | struct drm_encoder *save_encoders, *new_encoder, *encoder; | |
7bec756c | 454 | struct drm_framebuffer *old_fb = NULL; |
4cb72b17 JB |
455 | bool mode_changed = false; /* if true do a full mode set */ |
456 | bool fb_changed = false; /* if true and !mode_changed just do a flip */ | |
e67aae79 | 457 | struct drm_connector *save_connectors, *connector; |
f453ba04 DA |
458 | int count = 0, ro, fail = 0; |
459 | struct drm_crtc_helper_funcs *crtc_funcs; | |
460 | int ret = 0; | |
461 | ||
58367ed6 | 462 | DRM_DEBUG_KMS("\n"); |
f453ba04 DA |
463 | |
464 | if (!set) | |
465 | return -EINVAL; | |
466 | ||
467 | if (!set->crtc) | |
468 | return -EINVAL; | |
469 | ||
470 | if (!set->crtc->helper_private) | |
471 | return -EINVAL; | |
472 | ||
473 | crtc_funcs = set->crtc->helper_private; | |
474 | ||
58367ed6 ZY |
475 | DRM_DEBUG_KMS("crtc: %p %d fb: %p connectors: %p num_connectors:" |
476 | " %d (x, y) (%i, %i)\n", | |
f453ba04 DA |
477 | set->crtc, set->crtc->base.id, set->fb, set->connectors, |
478 | (int)set->num_connectors, set->x, set->y); | |
479 | ||
480 | dev = set->crtc->dev; | |
481 | ||
e67aae79 MM |
482 | /* Allocate space for the backup of all (non-pointer) crtc, encoder and |
483 | * connector data. */ | |
484 | save_crtcs = kzalloc(dev->mode_config.num_crtc * | |
485 | sizeof(struct drm_crtc), GFP_KERNEL); | |
f453ba04 DA |
486 | if (!save_crtcs) |
487 | return -ENOMEM; | |
488 | ||
e67aae79 MM |
489 | save_encoders = kzalloc(dev->mode_config.num_encoder * |
490 | sizeof(struct drm_encoder), GFP_KERNEL); | |
f453ba04 DA |
491 | if (!save_encoders) { |
492 | kfree(save_crtcs); | |
493 | return -ENOMEM; | |
494 | } | |
495 | ||
e67aae79 MM |
496 | save_connectors = kzalloc(dev->mode_config.num_connector * |
497 | sizeof(struct drm_connector), GFP_KERNEL); | |
498 | if (!save_connectors) { | |
499 | kfree(save_crtcs); | |
500 | kfree(save_encoders); | |
501 | return -ENOMEM; | |
502 | } | |
503 | ||
504 | /* Copy data. Note that driver private data is not affected. | |
505 | * Should anything bad happen only the expected state is | |
506 | * restored, not the drivers personal bookkeeping. | |
507 | */ | |
508 | count = 0; | |
509 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
510 | save_crtcs[count++] = *crtc; | |
511 | } | |
512 | ||
513 | count = 0; | |
514 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
515 | save_encoders[count++] = *encoder; | |
516 | } | |
517 | ||
518 | count = 0; | |
519 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
520 | save_connectors[count++] = *connector; | |
521 | } | |
522 | ||
f453ba04 DA |
523 | /* We should be able to check here if the fb has the same properties |
524 | * and then just flip_or_move it */ | |
525 | if (set->crtc->fb != set->fb) { | |
712531bf | 526 | /* If we have no fb then treat it as a full mode set */ |
7bec756c | 527 | if (set->crtc->fb == NULL) { |
58367ed6 | 528 | DRM_DEBUG_KMS("crtc has no fb, full mode set\n"); |
712531bf | 529 | mode_changed = true; |
4cb72b17 JB |
530 | } else if (set->fb == NULL) { |
531 | mode_changed = true; | |
8dff4742 | 532 | } else |
712531bf | 533 | fb_changed = true; |
f453ba04 DA |
534 | } |
535 | ||
536 | if (set->x != set->crtc->x || set->y != set->crtc->y) | |
712531bf | 537 | fb_changed = true; |
f453ba04 DA |
538 | |
539 | if (set->mode && !drm_mode_equal(set->mode, &set->crtc->mode)) { | |
58367ed6 | 540 | DRM_DEBUG_KMS("modes are different, full mode set\n"); |
f453ba04 DA |
541 | drm_mode_debug_printmodeline(&set->crtc->mode); |
542 | drm_mode_debug_printmodeline(set->mode); | |
712531bf | 543 | mode_changed = true; |
f453ba04 DA |
544 | } |
545 | ||
546 | /* a) traverse passed in connector list and get encoders for them */ | |
547 | count = 0; | |
548 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
549 | struct drm_connector_helper_funcs *connector_funcs = | |
550 | connector->helper_private; | |
f453ba04 DA |
551 | new_encoder = connector->encoder; |
552 | for (ro = 0; ro < set->num_connectors; ro++) { | |
553 | if (set->connectors[ro] == connector) { | |
554 | new_encoder = connector_funcs->best_encoder(connector); | |
555 | /* if we can't get an encoder for a connector | |
556 | we are setting now - then fail */ | |
557 | if (new_encoder == NULL) | |
558 | /* don't break so fail path works correct */ | |
559 | fail = 1; | |
560 | break; | |
561 | } | |
562 | } | |
563 | ||
564 | if (new_encoder != connector->encoder) { | |
58367ed6 | 565 | DRM_DEBUG_KMS("encoder changed, full mode switch\n"); |
712531bf | 566 | mode_changed = true; |
ff846ab7 MM |
567 | /* If the encoder is reused for another connector, then |
568 | * the appropriate crtc will be set later. | |
569 | */ | |
ff6fdbed MM |
570 | if (connector->encoder) |
571 | connector->encoder->crtc = NULL; | |
f453ba04 DA |
572 | connector->encoder = new_encoder; |
573 | } | |
574 | } | |
575 | ||
576 | if (fail) { | |
577 | ret = -EINVAL; | |
e67aae79 | 578 | goto fail; |
f453ba04 DA |
579 | } |
580 | ||
581 | count = 0; | |
582 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
583 | if (!connector->encoder) | |
584 | continue; | |
585 | ||
f453ba04 DA |
586 | if (connector->encoder->crtc == set->crtc) |
587 | new_crtc = NULL; | |
588 | else | |
589 | new_crtc = connector->encoder->crtc; | |
590 | ||
591 | for (ro = 0; ro < set->num_connectors; ro++) { | |
592 | if (set->connectors[ro] == connector) | |
593 | new_crtc = set->crtc; | |
594 | } | |
7bec756c JB |
595 | |
596 | /* Make sure the new CRTC will work with the encoder */ | |
597 | if (new_crtc && | |
598 | !drm_encoder_crtc_ok(connector->encoder, new_crtc)) { | |
599 | ret = -EINVAL; | |
e67aae79 | 600 | goto fail; |
7bec756c | 601 | } |
f453ba04 | 602 | if (new_crtc != connector->encoder->crtc) { |
58367ed6 | 603 | DRM_DEBUG_KMS("crtc changed, full mode switch\n"); |
712531bf | 604 | mode_changed = true; |
f453ba04 DA |
605 | connector->encoder->crtc = new_crtc; |
606 | } | |
58367ed6 | 607 | DRM_DEBUG_KMS("setting connector %d crtc to %p\n", |
7bec756c | 608 | connector->base.id, new_crtc); |
f453ba04 DA |
609 | } |
610 | ||
611 | /* mode_set_base is not a required function */ | |
712531bf JB |
612 | if (fb_changed && !crtc_funcs->mode_set_base) |
613 | mode_changed = true; | |
f453ba04 | 614 | |
712531bf | 615 | if (mode_changed) { |
3c4fdcfb | 616 | old_fb = set->crtc->fb; |
f453ba04 DA |
617 | set->crtc->fb = set->fb; |
618 | set->crtc->enabled = (set->mode != NULL); | |
619 | if (set->mode != NULL) { | |
58367ed6 ZY |
620 | DRM_DEBUG_KMS("attempting to set mode from" |
621 | " userspace\n"); | |
f453ba04 DA |
622 | drm_mode_debug_printmodeline(set->mode); |
623 | if (!drm_crtc_helper_set_mode(set->crtc, set->mode, | |
3c4fdcfb KH |
624 | set->x, set->y, |
625 | old_fb)) { | |
5c3b82e2 CW |
626 | DRM_ERROR("failed to set mode on crtc %p\n", |
627 | set->crtc); | |
f453ba04 | 628 | ret = -EINVAL; |
e67aae79 | 629 | goto fail; |
f453ba04 | 630 | } |
f453ba04 DA |
631 | } |
632 | drm_helper_disable_unused_functions(dev); | |
712531bf | 633 | } else if (fb_changed) { |
9b1596af BS |
634 | set->crtc->x = set->x; |
635 | set->crtc->y = set->y; | |
636 | ||
3c4fdcfb | 637 | old_fb = set->crtc->fb; |
f453ba04 DA |
638 | if (set->crtc->fb != set->fb) |
639 | set->crtc->fb = set->fb; | |
5c3b82e2 CW |
640 | ret = crtc_funcs->mode_set_base(set->crtc, |
641 | set->x, set->y, old_fb); | |
642 | if (ret != 0) | |
e67aae79 | 643 | goto fail; |
f453ba04 DA |
644 | } |
645 | ||
e67aae79 | 646 | kfree(save_connectors); |
f453ba04 DA |
647 | kfree(save_encoders); |
648 | kfree(save_crtcs); | |
649 | return 0; | |
650 | ||
e67aae79 MM |
651 | fail: |
652 | /* Restore all previous data. */ | |
f453ba04 | 653 | count = 0; |
e67aae79 MM |
654 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
655 | *crtc = save_crtcs[count++]; | |
656 | } | |
e62fb64e | 657 | |
e67aae79 MM |
658 | count = 0; |
659 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
660 | *encoder = save_encoders[count++]; | |
e62fb64e | 661 | } |
e67aae79 | 662 | |
f453ba04 DA |
663 | count = 0; |
664 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
e67aae79 | 665 | *connector = save_connectors[count++]; |
f453ba04 | 666 | } |
e67aae79 MM |
667 | |
668 | kfree(save_connectors); | |
f453ba04 | 669 | kfree(save_encoders); |
e67aae79 | 670 | kfree(save_crtcs); |
f453ba04 DA |
671 | return ret; |
672 | } | |
673 | EXPORT_SYMBOL(drm_crtc_helper_set_config); | |
674 | ||
c9fb15f6 KP |
675 | static int drm_helper_choose_encoder_dpms(struct drm_encoder *encoder) |
676 | { | |
677 | int dpms = DRM_MODE_DPMS_OFF; | |
678 | struct drm_connector *connector; | |
679 | struct drm_device *dev = encoder->dev; | |
680 | ||
681 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) | |
682 | if (connector->encoder == encoder) | |
683 | if (connector->dpms < dpms) | |
684 | dpms = connector->dpms; | |
685 | return dpms; | |
686 | } | |
687 | ||
688 | static int drm_helper_choose_crtc_dpms(struct drm_crtc *crtc) | |
689 | { | |
690 | int dpms = DRM_MODE_DPMS_OFF; | |
691 | struct drm_connector *connector; | |
692 | struct drm_device *dev = crtc->dev; | |
693 | ||
694 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) | |
695 | if (connector->encoder && connector->encoder->crtc == crtc) | |
696 | if (connector->dpms < dpms) | |
697 | dpms = connector->dpms; | |
698 | return dpms; | |
699 | } | |
700 | ||
701 | /** | |
702 | * drm_helper_connector_dpms | |
703 | * @connector affected connector | |
704 | * @mode DPMS mode | |
705 | * | |
706 | * Calls the low-level connector DPMS function, then | |
707 | * calls appropriate encoder and crtc DPMS functions as well | |
708 | */ | |
709 | void drm_helper_connector_dpms(struct drm_connector *connector, int mode) | |
710 | { | |
711 | struct drm_encoder *encoder = connector->encoder; | |
712 | struct drm_crtc *crtc = encoder ? encoder->crtc : NULL; | |
713 | int old_dpms; | |
714 | ||
715 | if (mode == connector->dpms) | |
716 | return; | |
717 | ||
718 | old_dpms = connector->dpms; | |
719 | connector->dpms = mode; | |
720 | ||
721 | /* from off to on, do crtc then encoder */ | |
722 | if (mode < old_dpms) { | |
723 | if (crtc) { | |
724 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; | |
725 | if (crtc_funcs->dpms) | |
726 | (*crtc_funcs->dpms) (crtc, | |
727 | drm_helper_choose_crtc_dpms(crtc)); | |
728 | } | |
729 | if (encoder) { | |
730 | struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; | |
731 | if (encoder_funcs->dpms) | |
732 | (*encoder_funcs->dpms) (encoder, | |
733 | drm_helper_choose_encoder_dpms(encoder)); | |
734 | } | |
735 | } | |
736 | ||
737 | /* from on to off, do encoder then crtc */ | |
738 | if (mode > old_dpms) { | |
739 | if (encoder) { | |
740 | struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; | |
741 | if (encoder_funcs->dpms) | |
742 | (*encoder_funcs->dpms) (encoder, | |
743 | drm_helper_choose_encoder_dpms(encoder)); | |
744 | } | |
745 | if (crtc) { | |
746 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; | |
747 | if (crtc_funcs->dpms) | |
748 | (*crtc_funcs->dpms) (crtc, | |
749 | drm_helper_choose_crtc_dpms(crtc)); | |
750 | } | |
751 | } | |
752 | ||
753 | return; | |
754 | } | |
755 | EXPORT_SYMBOL(drm_helper_connector_dpms); | |
756 | ||
f453ba04 DA |
757 | int drm_helper_mode_fill_fb_struct(struct drm_framebuffer *fb, |
758 | struct drm_mode_fb_cmd *mode_cmd) | |
759 | { | |
760 | fb->width = mode_cmd->width; | |
761 | fb->height = mode_cmd->height; | |
762 | fb->pitch = mode_cmd->pitch; | |
763 | fb->bits_per_pixel = mode_cmd->bpp; | |
764 | fb->depth = mode_cmd->depth; | |
765 | ||
766 | return 0; | |
767 | } | |
768 | EXPORT_SYMBOL(drm_helper_mode_fill_fb_struct); | |
769 | ||
770 | int drm_helper_resume_force_mode(struct drm_device *dev) | |
771 | { | |
772 | struct drm_crtc *crtc; | |
89347bb8 DJ |
773 | struct drm_encoder *encoder; |
774 | struct drm_encoder_helper_funcs *encoder_funcs; | |
775 | struct drm_crtc_helper_funcs *crtc_funcs; | |
f453ba04 DA |
776 | int ret; |
777 | ||
778 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
779 | ||
780 | if (!crtc->enabled) | |
781 | continue; | |
782 | ||
3c4fdcfb KH |
783 | ret = drm_crtc_helper_set_mode(crtc, &crtc->mode, |
784 | crtc->x, crtc->y, crtc->fb); | |
f453ba04 DA |
785 | |
786 | if (ret == false) | |
787 | DRM_ERROR("failed to set mode on crtc %p\n", crtc); | |
89347bb8 DJ |
788 | |
789 | /* Turn off outputs that were already powered off */ | |
790 | if (drm_helper_choose_crtc_dpms(crtc)) { | |
791 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
792 | ||
793 | if(encoder->crtc != crtc) | |
794 | continue; | |
795 | ||
796 | encoder_funcs = encoder->helper_private; | |
797 | if (encoder_funcs->dpms) | |
798 | (*encoder_funcs->dpms) (encoder, | |
799 | drm_helper_choose_encoder_dpms(encoder)); | |
800 | ||
801 | crtc_funcs = crtc->helper_private; | |
802 | if (crtc_funcs->dpms) | |
803 | (*crtc_funcs->dpms) (crtc, | |
804 | drm_helper_choose_crtc_dpms(crtc)); | |
805 | } | |
806 | } | |
f453ba04 | 807 | } |
af4fcb57 ZY |
808 | /* disable the unused connectors while restoring the modesetting */ |
809 | drm_helper_disable_unused_functions(dev); | |
f453ba04 DA |
810 | return 0; |
811 | } | |
812 | EXPORT_SYMBOL(drm_helper_resume_force_mode); | |
eb1f8e4f DA |
813 | |
814 | static struct slow_work_ops output_poll_ops; | |
815 | ||
816 | #define DRM_OUTPUT_POLL_PERIOD (10*HZ) | |
817 | static void output_poll_execute(struct slow_work *work) | |
818 | { | |
819 | struct delayed_slow_work *delayed_work = container_of(work, struct delayed_slow_work, work); | |
820 | struct drm_device *dev = container_of(delayed_work, struct drm_device, mode_config.output_poll_slow_work); | |
821 | struct drm_connector *connector; | |
822 | enum drm_connector_status old_status, status; | |
823 | bool repoll = false, changed = false; | |
824 | int ret; | |
825 | ||
826 | mutex_lock(&dev->mode_config.mutex); | |
827 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
828 | ||
829 | /* if this is HPD or polled don't check it - | |
830 | TV out for instance */ | |
831 | if (!connector->polled) | |
832 | continue; | |
833 | ||
834 | else if (connector->polled & (DRM_CONNECTOR_POLL_CONNECT | DRM_CONNECTOR_POLL_DISCONNECT)) | |
835 | repoll = true; | |
836 | ||
837 | old_status = connector->status; | |
838 | /* if we are connected and don't want to poll for disconnect | |
839 | skip it */ | |
840 | if (old_status == connector_status_connected && | |
841 | !(connector->polled & DRM_CONNECTOR_POLL_DISCONNECT) && | |
842 | !(connector->polled & DRM_CONNECTOR_POLL_HPD)) | |
843 | continue; | |
844 | ||
845 | status = connector->funcs->detect(connector); | |
846 | if (old_status != status) | |
847 | changed = true; | |
848 | } | |
849 | ||
850 | mutex_unlock(&dev->mode_config.mutex); | |
851 | ||
852 | if (changed) { | |
853 | /* send a uevent + call fbdev */ | |
854 | drm_sysfs_hotplug_event(dev); | |
855 | if (dev->mode_config.funcs->output_poll_changed) | |
856 | dev->mode_config.funcs->output_poll_changed(dev); | |
857 | } | |
858 | ||
859 | if (repoll) { | |
860 | ret = delayed_slow_work_enqueue(delayed_work, DRM_OUTPUT_POLL_PERIOD); | |
861 | if (ret) | |
862 | DRM_ERROR("delayed enqueue failed %d\n", ret); | |
863 | } | |
864 | } | |
865 | ||
fbf81762 DA |
866 | void drm_kms_helper_poll_disable(struct drm_device *dev) |
867 | { | |
868 | if (!dev->mode_config.poll_enabled) | |
869 | return; | |
870 | delayed_slow_work_cancel(&dev->mode_config.output_poll_slow_work); | |
871 | } | |
872 | EXPORT_SYMBOL(drm_kms_helper_poll_disable); | |
873 | ||
874 | void drm_kms_helper_poll_enable(struct drm_device *dev) | |
eb1f8e4f | 875 | { |
eb1f8e4f | 876 | bool poll = false; |
fbf81762 | 877 | struct drm_connector *connector; |
eb1f8e4f DA |
878 | int ret; |
879 | ||
880 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
881 | if (connector->polled) | |
882 | poll = true; | |
883 | } | |
eb1f8e4f DA |
884 | |
885 | if (poll) { | |
886 | ret = delayed_slow_work_enqueue(&dev->mode_config.output_poll_slow_work, DRM_OUTPUT_POLL_PERIOD); | |
887 | if (ret) | |
888 | DRM_ERROR("delayed enqueue failed %d\n", ret); | |
889 | } | |
890 | } | |
fbf81762 DA |
891 | EXPORT_SYMBOL(drm_kms_helper_poll_enable); |
892 | ||
893 | void drm_kms_helper_poll_init(struct drm_device *dev) | |
894 | { | |
895 | slow_work_register_user(THIS_MODULE); | |
896 | delayed_slow_work_init(&dev->mode_config.output_poll_slow_work, | |
897 | &output_poll_ops); | |
898 | dev->mode_config.poll_enabled = true; | |
899 | ||
900 | drm_kms_helper_poll_enable(dev); | |
901 | } | |
eb1f8e4f DA |
902 | EXPORT_SYMBOL(drm_kms_helper_poll_init); |
903 | ||
904 | void drm_kms_helper_poll_fini(struct drm_device *dev) | |
905 | { | |
fbf81762 | 906 | drm_kms_helper_poll_disable(dev); |
eb1f8e4f DA |
907 | slow_work_unregister_user(THIS_MODULE); |
908 | } | |
909 | EXPORT_SYMBOL(drm_kms_helper_poll_fini); | |
910 | ||
911 | void drm_helper_hpd_irq_event(struct drm_device *dev) | |
912 | { | |
913 | if (!dev->mode_config.poll_enabled) | |
914 | return; | |
915 | delayed_slow_work_cancel(&dev->mode_config.output_poll_slow_work); | |
916 | /* schedule a slow work asap */ | |
917 | delayed_slow_work_enqueue(&dev->mode_config.output_poll_slow_work, 0); | |
918 | } | |
919 | EXPORT_SYMBOL(drm_helper_hpd_irq_event); | |
920 | ||
921 | static struct slow_work_ops output_poll_ops = { | |
922 | .execute = output_poll_execute, | |
923 | }; |