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 DA |
57 | /** |
58 | * drm_helper_probe_connector_modes - get complete set of display modes | |
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)); |
620f3781 | 107 | goto prune; |
f453ba04 DA |
108 | } |
109 | ||
40a518d9 | 110 | count = (*connector_funcs->get_modes)(connector); |
50fe4cfd | 111 | if (!count) { |
112 | count = drm_add_modes_noedid(connector, 800, 600); | |
113 | if (!count) | |
114 | return 0; | |
115 | } | |
f453ba04 | 116 | |
40a518d9 | 117 | drm_mode_connector_list_update(connector); |
f453ba04 DA |
118 | |
119 | if (maxX && maxY) | |
120 | drm_mode_validate_size(dev, &connector->modes, maxX, | |
121 | maxY, 0); | |
6714977b | 122 | |
123 | if (connector->interlace_allowed) | |
124 | mode_flags |= DRM_MODE_FLAG_INTERLACE; | |
125 | if (connector->doublescan_allowed) | |
126 | mode_flags |= DRM_MODE_FLAG_DBLSCAN; | |
127 | drm_mode_validate_flag(connector, mode_flags); | |
128 | ||
f453ba04 DA |
129 | list_for_each_entry_safe(mode, t, &connector->modes, head) { |
130 | if (mode->status == MODE_OK) | |
131 | mode->status = connector_funcs->mode_valid(connector, | |
132 | mode); | |
133 | } | |
134 | ||
620f3781 | 135 | prune: |
f453ba04 DA |
136 | drm_mode_prune_invalid(dev, &connector->modes, true); |
137 | ||
40a518d9 JB |
138 | if (list_empty(&connector->modes)) |
139 | return 0; | |
f453ba04 DA |
140 | |
141 | drm_mode_sort(&connector->modes); | |
142 | ||
58367ed6 ZY |
143 | DRM_DEBUG_KMS("Probed modes for %s\n", |
144 | drm_get_connector_name(connector)); | |
f453ba04 DA |
145 | list_for_each_entry_safe(mode, t, &connector->modes, head) { |
146 | mode->vrefresh = drm_mode_vrefresh(mode); | |
147 | ||
148 | drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V); | |
149 | drm_mode_debug_printmodeline(mode); | |
150 | } | |
40a518d9 JB |
151 | |
152 | return count; | |
f453ba04 DA |
153 | } |
154 | EXPORT_SYMBOL(drm_helper_probe_single_connector_modes); | |
155 | ||
40a518d9 | 156 | int drm_helper_probe_connector_modes(struct drm_device *dev, uint32_t maxX, |
f453ba04 DA |
157 | uint32_t maxY) |
158 | { | |
159 | struct drm_connector *connector; | |
40a518d9 | 160 | int count = 0; |
f453ba04 DA |
161 | |
162 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
40a518d9 JB |
163 | count += drm_helper_probe_single_connector_modes(connector, |
164 | maxX, maxY); | |
f453ba04 | 165 | } |
40a518d9 JB |
166 | |
167 | return count; | |
f453ba04 DA |
168 | } |
169 | EXPORT_SYMBOL(drm_helper_probe_connector_modes); | |
170 | ||
c9fb15f6 KP |
171 | /** |
172 | * drm_helper_encoder_in_use - check if a given encoder is in use | |
173 | * @encoder: encoder to check | |
174 | * | |
175 | * LOCKING: | |
176 | * Caller must hold mode config lock. | |
177 | * | |
178 | * Walk @encoders's DRM device's mode_config and see if it's in use. | |
179 | * | |
180 | * RETURNS: | |
181 | * True if @encoder is part of the mode_config, false otherwise. | |
182 | */ | |
183 | bool drm_helper_encoder_in_use(struct drm_encoder *encoder) | |
184 | { | |
185 | struct drm_connector *connector; | |
186 | struct drm_device *dev = encoder->dev; | |
187 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) | |
188 | if (connector->encoder == encoder) | |
189 | return true; | |
190 | return false; | |
191 | } | |
192 | EXPORT_SYMBOL(drm_helper_encoder_in_use); | |
193 | ||
f453ba04 DA |
194 | /** |
195 | * drm_helper_crtc_in_use - check if a given CRTC is in a mode_config | |
196 | * @crtc: CRTC to check | |
197 | * | |
198 | * LOCKING: | |
199 | * Caller must hold mode config lock. | |
200 | * | |
201 | * Walk @crtc's DRM device's mode_config and see if it's in use. | |
202 | * | |
203 | * RETURNS: | |
204 | * True if @crtc is part of the mode_config, false otherwise. | |
205 | */ | |
206 | bool drm_helper_crtc_in_use(struct drm_crtc *crtc) | |
207 | { | |
208 | struct drm_encoder *encoder; | |
209 | struct drm_device *dev = crtc->dev; | |
210 | /* FIXME: Locking around list access? */ | |
211 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) | |
c9fb15f6 | 212 | if (encoder->crtc == crtc && drm_helper_encoder_in_use(encoder)) |
f453ba04 DA |
213 | return true; |
214 | return false; | |
215 | } | |
216 | EXPORT_SYMBOL(drm_helper_crtc_in_use); | |
217 | ||
218 | /** | |
219 | * drm_disable_unused_functions - disable unused objects | |
220 | * @dev: DRM device | |
221 | * | |
222 | * LOCKING: | |
223 | * Caller must hold mode config lock. | |
224 | * | |
225 | * If an connector or CRTC isn't part of @dev's mode_config, it can be disabled | |
226 | * by calling its dpms function, which should power it off. | |
227 | */ | |
228 | void drm_helper_disable_unused_functions(struct drm_device *dev) | |
229 | { | |
230 | struct drm_encoder *encoder; | |
a3a0544b | 231 | struct drm_connector *connector; |
f453ba04 DA |
232 | struct drm_encoder_helper_funcs *encoder_funcs; |
233 | struct drm_crtc *crtc; | |
234 | ||
a3a0544b DA |
235 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
236 | if (!connector->encoder) | |
237 | continue; | |
238 | if (connector->status == connector_status_disconnected) | |
239 | connector->encoder = NULL; | |
240 | } | |
241 | ||
f453ba04 DA |
242 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
243 | encoder_funcs = encoder->helper_private; | |
a3a0544b DA |
244 | if (!drm_helper_encoder_in_use(encoder)) { |
245 | if (encoder_funcs->disable) | |
246 | (*encoder_funcs->disable)(encoder); | |
247 | else | |
248 | (*encoder_funcs->dpms)(encoder, DRM_MODE_DPMS_OFF); | |
9c552dd7 DA |
249 | /* disconnector encoder from any connector */ |
250 | encoder->crtc = NULL; | |
a3a0544b | 251 | } |
f453ba04 DA |
252 | } |
253 | ||
254 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
255 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; | |
256 | crtc->enabled = drm_helper_crtc_in_use(crtc); | |
257 | if (!crtc->enabled) { | |
258 | crtc_funcs->dpms(crtc, DRM_MODE_DPMS_OFF); | |
259 | crtc->fb = NULL; | |
260 | } | |
261 | } | |
262 | } | |
263 | EXPORT_SYMBOL(drm_helper_disable_unused_functions); | |
264 | ||
265 | static struct drm_display_mode *drm_has_preferred_mode(struct drm_connector *connector, int width, int height) | |
266 | { | |
267 | struct drm_display_mode *mode; | |
268 | ||
269 | list_for_each_entry(mode, &connector->modes, head) { | |
270 | if (drm_mode_width(mode) > width || | |
271 | drm_mode_height(mode) > height) | |
272 | continue; | |
273 | if (mode->type & DRM_MODE_TYPE_PREFERRED) | |
274 | return mode; | |
275 | } | |
276 | return NULL; | |
277 | } | |
278 | ||
d50ba256 DA |
279 | static bool drm_has_cmdline_mode(struct drm_connector *connector) |
280 | { | |
281 | struct drm_fb_helper_connector *fb_help_conn = connector->fb_helper_private; | |
282 | struct drm_fb_helper_cmdline_mode *cmdline_mode = &fb_help_conn->cmdline_mode; | |
283 | return cmdline_mode->specified; | |
284 | } | |
285 | ||
286 | static struct drm_display_mode *drm_pick_cmdline_mode(struct drm_connector *connector, int width, int height) | |
287 | { | |
288 | struct drm_fb_helper_connector *fb_help_conn = connector->fb_helper_private; | |
289 | struct drm_fb_helper_cmdline_mode *cmdline_mode = &fb_help_conn->cmdline_mode; | |
290 | struct drm_display_mode *mode = NULL; | |
291 | ||
292 | if (cmdline_mode->specified == false) | |
293 | return mode; | |
294 | ||
295 | /* attempt to find a matching mode in the list of modes | |
296 | * we have gotten so far, if not add a CVT mode that conforms | |
297 | */ | |
298 | if (cmdline_mode->rb || cmdline_mode->margins) | |
299 | goto create_mode; | |
300 | ||
301 | list_for_each_entry(mode, &connector->modes, head) { | |
302 | /* check width/height */ | |
303 | if (mode->hdisplay != cmdline_mode->xres || | |
304 | mode->vdisplay != cmdline_mode->yres) | |
305 | continue; | |
306 | ||
307 | if (cmdline_mode->refresh_specified) { | |
308 | if (mode->vrefresh != cmdline_mode->refresh) | |
309 | continue; | |
310 | } | |
311 | ||
312 | if (cmdline_mode->interlace) { | |
313 | if (!(mode->flags & DRM_MODE_FLAG_INTERLACE)) | |
314 | continue; | |
315 | } | |
316 | return mode; | |
317 | } | |
318 | ||
319 | create_mode: | |
320 | mode = drm_cvt_mode(connector->dev, cmdline_mode->xres, | |
321 | cmdline_mode->yres, | |
322 | cmdline_mode->refresh_specified ? cmdline_mode->refresh : 60, | |
323 | cmdline_mode->rb, cmdline_mode->interlace, | |
324 | cmdline_mode->margins); | |
325 | list_add(&mode->head, &connector->modes); | |
326 | return mode; | |
327 | } | |
328 | ||
f453ba04 DA |
329 | static bool drm_connector_enabled(struct drm_connector *connector, bool strict) |
330 | { | |
331 | bool enable; | |
332 | ||
333 | if (strict) { | |
334 | enable = connector->status == connector_status_connected; | |
335 | } else { | |
336 | enable = connector->status != connector_status_disconnected; | |
337 | } | |
338 | return enable; | |
339 | } | |
340 | ||
341 | static void drm_enable_connectors(struct drm_device *dev, bool *enabled) | |
342 | { | |
343 | bool any_enabled = false; | |
344 | struct drm_connector *connector; | |
345 | int i = 0; | |
346 | ||
347 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
348 | enabled[i] = drm_connector_enabled(connector, true); | |
58367ed6 | 349 | DRM_DEBUG_KMS("connector %d enabled? %s\n", connector->base.id, |
40a518d9 | 350 | enabled[i] ? "yes" : "no"); |
f453ba04 DA |
351 | any_enabled |= enabled[i]; |
352 | i++; | |
353 | } | |
354 | ||
355 | if (any_enabled) | |
356 | return; | |
357 | ||
358 | i = 0; | |
359 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
360 | enabled[i] = drm_connector_enabled(connector, false); | |
361 | i++; | |
362 | } | |
363 | } | |
364 | ||
365 | static bool drm_target_preferred(struct drm_device *dev, | |
366 | struct drm_display_mode **modes, | |
367 | bool *enabled, int width, int height) | |
368 | { | |
369 | struct drm_connector *connector; | |
370 | int i = 0; | |
371 | ||
372 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
373 | ||
374 | if (enabled[i] == false) { | |
375 | i++; | |
376 | continue; | |
377 | } | |
378 | ||
d50ba256 DA |
379 | DRM_DEBUG_KMS("looking for cmdline mode on connector %d\n", |
380 | connector->base.id); | |
40a518d9 | 381 | |
d50ba256 DA |
382 | /* got for command line mode first */ |
383 | modes[i] = drm_pick_cmdline_mode(connector, width, height); | |
384 | if (!modes[i]) { | |
385 | DRM_DEBUG_KMS("looking for preferred mode on connector %d\n", | |
386 | connector->base.id); | |
387 | modes[i] = drm_has_preferred_mode(connector, width, height); | |
388 | } | |
40a518d9 JB |
389 | /* No preferred modes, pick one off the list */ |
390 | if (!modes[i] && !list_empty(&connector->modes)) { | |
f453ba04 DA |
391 | list_for_each_entry(modes[i], &connector->modes, head) |
392 | break; | |
393 | } | |
58367ed6 | 394 | DRM_DEBUG_KMS("found mode %s\n", modes[i] ? modes[i]->name : |
40a518d9 | 395 | "none"); |
f453ba04 DA |
396 | i++; |
397 | } | |
398 | return true; | |
399 | } | |
400 | ||
401 | static int drm_pick_crtcs(struct drm_device *dev, | |
402 | struct drm_crtc **best_crtcs, | |
403 | struct drm_display_mode **modes, | |
404 | int n, int width, int height) | |
405 | { | |
406 | int c, o; | |
407 | struct drm_connector *connector; | |
408 | struct drm_connector_helper_funcs *connector_funcs; | |
409 | struct drm_encoder *encoder; | |
410 | struct drm_crtc *best_crtc; | |
411 | int my_score, best_score, score; | |
412 | struct drm_crtc **crtcs, *crtc; | |
413 | ||
414 | if (n == dev->mode_config.num_connector) | |
415 | return 0; | |
416 | c = 0; | |
417 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
418 | if (c == n) | |
419 | break; | |
420 | c++; | |
421 | } | |
422 | ||
423 | best_crtcs[n] = NULL; | |
424 | best_crtc = NULL; | |
425 | best_score = drm_pick_crtcs(dev, best_crtcs, modes, n+1, width, height); | |
426 | if (modes[n] == NULL) | |
427 | return best_score; | |
428 | ||
429 | crtcs = kmalloc(dev->mode_config.num_connector * | |
430 | sizeof(struct drm_crtc *), GFP_KERNEL); | |
431 | if (!crtcs) | |
432 | return best_score; | |
433 | ||
434 | my_score = 1; | |
435 | if (connector->status == connector_status_connected) | |
436 | my_score++; | |
d50ba256 DA |
437 | if (drm_has_cmdline_mode(connector)) |
438 | my_score++; | |
f453ba04 DA |
439 | if (drm_has_preferred_mode(connector, width, height)) |
440 | my_score++; | |
441 | ||
442 | connector_funcs = connector->helper_private; | |
443 | encoder = connector_funcs->best_encoder(connector); | |
444 | if (!encoder) | |
445 | goto out; | |
446 | ||
447 | connector->encoder = encoder; | |
448 | ||
449 | /* select a crtc for this connector and then attempt to configure | |
450 | remaining connectors */ | |
451 | c = 0; | |
452 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
453 | ||
a3a0544b | 454 | if ((encoder->possible_crtcs & (1 << c)) == 0) { |
f453ba04 DA |
455 | c++; |
456 | continue; | |
457 | } | |
458 | ||
459 | for (o = 0; o < n; o++) | |
460 | if (best_crtcs[o] == crtc) | |
461 | break; | |
462 | ||
463 | if (o < n) { | |
464 | /* ignore cloning for now */ | |
465 | c++; | |
466 | continue; | |
467 | } | |
468 | ||
469 | crtcs[n] = crtc; | |
470 | memcpy(crtcs, best_crtcs, n * sizeof(struct drm_crtc *)); | |
471 | score = my_score + drm_pick_crtcs(dev, crtcs, modes, n + 1, | |
472 | width, height); | |
473 | if (score > best_score) { | |
474 | best_crtc = crtc; | |
475 | best_score = score; | |
476 | memcpy(best_crtcs, crtcs, | |
477 | dev->mode_config.num_connector * | |
478 | sizeof(struct drm_crtc *)); | |
479 | } | |
480 | c++; | |
481 | } | |
482 | out: | |
483 | kfree(crtcs); | |
484 | return best_score; | |
485 | } | |
486 | ||
487 | static void drm_setup_crtcs(struct drm_device *dev) | |
488 | { | |
489 | struct drm_crtc **crtcs; | |
490 | struct drm_display_mode **modes; | |
491 | struct drm_encoder *encoder; | |
492 | struct drm_connector *connector; | |
493 | bool *enabled; | |
494 | int width, height; | |
495 | int i, ret; | |
496 | ||
58367ed6 | 497 | DRM_DEBUG_KMS("\n"); |
40a518d9 | 498 | |
f453ba04 DA |
499 | width = dev->mode_config.max_width; |
500 | height = dev->mode_config.max_height; | |
501 | ||
502 | /* clean out all the encoder/crtc combos */ | |
503 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
504 | encoder->crtc = NULL; | |
505 | } | |
506 | ||
507 | crtcs = kcalloc(dev->mode_config.num_connector, | |
508 | sizeof(struct drm_crtc *), GFP_KERNEL); | |
509 | modes = kcalloc(dev->mode_config.num_connector, | |
510 | sizeof(struct drm_display_mode *), GFP_KERNEL); | |
511 | enabled = kcalloc(dev->mode_config.num_connector, | |
512 | sizeof(bool), GFP_KERNEL); | |
513 | ||
514 | drm_enable_connectors(dev, enabled); | |
515 | ||
516 | ret = drm_target_preferred(dev, modes, enabled, width, height); | |
517 | if (!ret) | |
518 | DRM_ERROR("Unable to find initial modes\n"); | |
519 | ||
58367ed6 | 520 | DRM_DEBUG_KMS("picking CRTCs for %dx%d config\n", width, height); |
40a518d9 | 521 | |
f453ba04 DA |
522 | drm_pick_crtcs(dev, crtcs, modes, 0, width, height); |
523 | ||
524 | i = 0; | |
525 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
526 | struct drm_display_mode *mode = modes[i]; | |
527 | struct drm_crtc *crtc = crtcs[i]; | |
528 | ||
529 | if (connector->encoder == NULL) { | |
530 | i++; | |
531 | continue; | |
532 | } | |
533 | ||
534 | if (mode && crtc) { | |
58367ed6 | 535 | DRM_DEBUG_KMS("desired mode %s set on crtc %d\n", |
40a518d9 | 536 | mode->name, crtc->base.id); |
f453ba04 DA |
537 | crtc->desired_mode = mode; |
538 | connector->encoder->crtc = crtc; | |
a3a0544b | 539 | } else { |
f453ba04 | 540 | connector->encoder->crtc = NULL; |
a3a0544b DA |
541 | connector->encoder = NULL; |
542 | } | |
f453ba04 DA |
543 | i++; |
544 | } | |
545 | ||
546 | kfree(crtcs); | |
547 | kfree(modes); | |
548 | kfree(enabled); | |
549 | } | |
7bec756c JB |
550 | |
551 | /** | |
552 | * drm_encoder_crtc_ok - can a given crtc drive a given encoder? | |
553 | * @encoder: encoder to test | |
554 | * @crtc: crtc to test | |
555 | * | |
556 | * Return false if @encoder can't be driven by @crtc, true otherwise. | |
557 | */ | |
558 | static bool drm_encoder_crtc_ok(struct drm_encoder *encoder, | |
559 | struct drm_crtc *crtc) | |
560 | { | |
561 | struct drm_device *dev; | |
562 | struct drm_crtc *tmp; | |
563 | int crtc_mask = 1; | |
564 | ||
565 | WARN(!crtc, "checking null crtc?"); | |
566 | ||
567 | dev = crtc->dev; | |
568 | ||
569 | list_for_each_entry(tmp, &dev->mode_config.crtc_list, head) { | |
570 | if (tmp == crtc) | |
571 | break; | |
572 | crtc_mask <<= 1; | |
573 | } | |
574 | ||
575 | if (encoder->possible_crtcs & crtc_mask) | |
576 | return true; | |
577 | return false; | |
578 | } | |
579 | ||
580 | /* | |
581 | * Check the CRTC we're going to map each output to vs. its current | |
582 | * CRTC. If they don't match, we have to disable the output and the CRTC | |
583 | * since the driver will have to re-route things. | |
584 | */ | |
585 | static void | |
586 | drm_crtc_prepare_encoders(struct drm_device *dev) | |
587 | { | |
588 | struct drm_encoder_helper_funcs *encoder_funcs; | |
589 | struct drm_encoder *encoder; | |
590 | ||
591 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
592 | encoder_funcs = encoder->helper_private; | |
593 | /* Disable unused encoders */ | |
594 | if (encoder->crtc == NULL) | |
595 | (*encoder_funcs->dpms)(encoder, DRM_MODE_DPMS_OFF); | |
596 | /* Disable encoders whose CRTC is about to change */ | |
597 | if (encoder_funcs->get_crtc && | |
598 | encoder->crtc != (*encoder_funcs->get_crtc)(encoder)) | |
599 | (*encoder_funcs->dpms)(encoder, DRM_MODE_DPMS_OFF); | |
600 | } | |
601 | } | |
602 | ||
f453ba04 DA |
603 | /** |
604 | * drm_crtc_set_mode - set a mode | |
605 | * @crtc: CRTC to program | |
606 | * @mode: mode to use | |
607 | * @x: width of mode | |
608 | * @y: height of mode | |
609 | * | |
610 | * LOCKING: | |
611 | * Caller must hold mode config lock. | |
612 | * | |
613 | * Try to set @mode on @crtc. Give @crtc and its associated connectors a chance | |
614 | * to fixup or reject the mode prior to trying to set it. | |
615 | * | |
616 | * RETURNS: | |
617 | * True if the mode was set successfully, or false otherwise. | |
618 | */ | |
619 | bool drm_crtc_helper_set_mode(struct drm_crtc *crtc, | |
620 | struct drm_display_mode *mode, | |
3c4fdcfb KH |
621 | int x, int y, |
622 | struct drm_framebuffer *old_fb) | |
f453ba04 DA |
623 | { |
624 | struct drm_device *dev = crtc->dev; | |
625 | struct drm_display_mode *adjusted_mode, saved_mode; | |
626 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; | |
627 | struct drm_encoder_helper_funcs *encoder_funcs; | |
628 | int saved_x, saved_y; | |
629 | struct drm_encoder *encoder; | |
630 | bool ret = true; | |
631 | ||
632 | adjusted_mode = drm_mode_duplicate(dev, mode); | |
633 | ||
634 | crtc->enabled = drm_helper_crtc_in_use(crtc); | |
635 | ||
636 | if (!crtc->enabled) | |
637 | return true; | |
638 | ||
639 | saved_mode = crtc->mode; | |
640 | saved_x = crtc->x; | |
641 | saved_y = crtc->y; | |
642 | ||
643 | /* Update crtc values up front so the driver can rely on them for mode | |
644 | * setting. | |
645 | */ | |
646 | crtc->mode = *mode; | |
647 | crtc->x = x; | |
648 | crtc->y = y; | |
649 | ||
f453ba04 DA |
650 | /* Pass our mode to the connectors and the CRTC to give them a chance to |
651 | * adjust it according to limitations or connector properties, and also | |
652 | * a chance to reject the mode entirely. | |
653 | */ | |
654 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
655 | ||
656 | if (encoder->crtc != crtc) | |
657 | continue; | |
658 | encoder_funcs = encoder->helper_private; | |
659 | if (!(ret = encoder_funcs->mode_fixup(encoder, mode, | |
660 | adjusted_mode))) { | |
661 | goto done; | |
662 | } | |
663 | } | |
664 | ||
665 | if (!(ret = crtc_funcs->mode_fixup(crtc, mode, adjusted_mode))) { | |
666 | goto done; | |
667 | } | |
668 | ||
669 | /* Prepare the encoders and CRTCs before setting the mode. */ | |
670 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
671 | ||
672 | if (encoder->crtc != crtc) | |
673 | continue; | |
674 | encoder_funcs = encoder->helper_private; | |
675 | /* Disable the encoders as the first thing we do. */ | |
676 | encoder_funcs->prepare(encoder); | |
677 | } | |
678 | ||
7bec756c JB |
679 | drm_crtc_prepare_encoders(dev); |
680 | ||
f453ba04 DA |
681 | crtc_funcs->prepare(crtc); |
682 | ||
683 | /* Set up the DPLL and any encoders state that needs to adjust or depend | |
684 | * on the DPLL. | |
685 | */ | |
5c3b82e2 CW |
686 | ret = !crtc_funcs->mode_set(crtc, mode, adjusted_mode, x, y, old_fb); |
687 | if (!ret) | |
688 | goto done; | |
f453ba04 DA |
689 | |
690 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
691 | ||
692 | if (encoder->crtc != crtc) | |
693 | continue; | |
694 | ||
695 | DRM_INFO("%s: set mode %s %x\n", drm_get_encoder_name(encoder), | |
696 | mode->name, mode->base.id); | |
697 | encoder_funcs = encoder->helper_private; | |
698 | encoder_funcs->mode_set(encoder, mode, adjusted_mode); | |
699 | } | |
700 | ||
701 | /* Now enable the clocks, plane, pipe, and connectors that we set up. */ | |
702 | crtc_funcs->commit(crtc); | |
703 | ||
704 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
705 | ||
706 | if (encoder->crtc != crtc) | |
707 | continue; | |
708 | ||
709 | encoder_funcs = encoder->helper_private; | |
710 | encoder_funcs->commit(encoder); | |
711 | ||
712 | } | |
713 | ||
714 | /* XXX free adjustedmode */ | |
715 | drm_mode_destroy(dev, adjusted_mode); | |
716 | /* FIXME: add subpixel order */ | |
717 | done: | |
718 | if (!ret) { | |
719 | crtc->mode = saved_mode; | |
720 | crtc->x = saved_x; | |
721 | crtc->y = saved_y; | |
722 | } | |
723 | ||
724 | return ret; | |
725 | } | |
726 | EXPORT_SYMBOL(drm_crtc_helper_set_mode); | |
727 | ||
728 | ||
729 | /** | |
730 | * drm_crtc_helper_set_config - set a new config from userspace | |
731 | * @crtc: CRTC to setup | |
732 | * @crtc_info: user provided configuration | |
733 | * @new_mode: new mode to set | |
734 | * @connector_set: set of connectors for the new config | |
735 | * @fb: new framebuffer | |
736 | * | |
737 | * LOCKING: | |
738 | * Caller must hold mode config lock. | |
739 | * | |
740 | * Setup a new configuration, provided by the user in @crtc_info, and enable | |
741 | * it. | |
742 | * | |
743 | * RETURNS: | |
744 | * Zero. (FIXME) | |
745 | */ | |
746 | int drm_crtc_helper_set_config(struct drm_mode_set *set) | |
747 | { | |
748 | struct drm_device *dev; | |
e67aae79 MM |
749 | struct drm_crtc *save_crtcs, *new_crtc, *crtc; |
750 | struct drm_encoder *save_encoders, *new_encoder, *encoder; | |
7bec756c | 751 | struct drm_framebuffer *old_fb = NULL; |
4cb72b17 JB |
752 | bool mode_changed = false; /* if true do a full mode set */ |
753 | bool fb_changed = false; /* if true and !mode_changed just do a flip */ | |
e67aae79 | 754 | struct drm_connector *save_connectors, *connector; |
f453ba04 DA |
755 | int count = 0, ro, fail = 0; |
756 | struct drm_crtc_helper_funcs *crtc_funcs; | |
757 | int ret = 0; | |
758 | ||
58367ed6 | 759 | DRM_DEBUG_KMS("\n"); |
f453ba04 DA |
760 | |
761 | if (!set) | |
762 | return -EINVAL; | |
763 | ||
764 | if (!set->crtc) | |
765 | return -EINVAL; | |
766 | ||
767 | if (!set->crtc->helper_private) | |
768 | return -EINVAL; | |
769 | ||
770 | crtc_funcs = set->crtc->helper_private; | |
771 | ||
58367ed6 ZY |
772 | DRM_DEBUG_KMS("crtc: %p %d fb: %p connectors: %p num_connectors:" |
773 | " %d (x, y) (%i, %i)\n", | |
f453ba04 DA |
774 | set->crtc, set->crtc->base.id, set->fb, set->connectors, |
775 | (int)set->num_connectors, set->x, set->y); | |
776 | ||
777 | dev = set->crtc->dev; | |
778 | ||
e67aae79 MM |
779 | /* Allocate space for the backup of all (non-pointer) crtc, encoder and |
780 | * connector data. */ | |
781 | save_crtcs = kzalloc(dev->mode_config.num_crtc * | |
782 | sizeof(struct drm_crtc), GFP_KERNEL); | |
f453ba04 DA |
783 | if (!save_crtcs) |
784 | return -ENOMEM; | |
785 | ||
e67aae79 MM |
786 | save_encoders = kzalloc(dev->mode_config.num_encoder * |
787 | sizeof(struct drm_encoder), GFP_KERNEL); | |
f453ba04 DA |
788 | if (!save_encoders) { |
789 | kfree(save_crtcs); | |
790 | return -ENOMEM; | |
791 | } | |
792 | ||
e67aae79 MM |
793 | save_connectors = kzalloc(dev->mode_config.num_connector * |
794 | sizeof(struct drm_connector), GFP_KERNEL); | |
795 | if (!save_connectors) { | |
796 | kfree(save_crtcs); | |
797 | kfree(save_encoders); | |
798 | return -ENOMEM; | |
799 | } | |
800 | ||
801 | /* Copy data. Note that driver private data is not affected. | |
802 | * Should anything bad happen only the expected state is | |
803 | * restored, not the drivers personal bookkeeping. | |
804 | */ | |
805 | count = 0; | |
806 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
807 | save_crtcs[count++] = *crtc; | |
808 | } | |
809 | ||
810 | count = 0; | |
811 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
812 | save_encoders[count++] = *encoder; | |
813 | } | |
814 | ||
815 | count = 0; | |
816 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
817 | save_connectors[count++] = *connector; | |
818 | } | |
819 | ||
f453ba04 DA |
820 | /* We should be able to check here if the fb has the same properties |
821 | * and then just flip_or_move it */ | |
822 | if (set->crtc->fb != set->fb) { | |
712531bf | 823 | /* If we have no fb then treat it as a full mode set */ |
7bec756c | 824 | if (set->crtc->fb == NULL) { |
58367ed6 | 825 | DRM_DEBUG_KMS("crtc has no fb, full mode set\n"); |
712531bf | 826 | mode_changed = true; |
4cb72b17 JB |
827 | } else if (set->fb == NULL) { |
828 | mode_changed = true; | |
7bec756c | 829 | } else if ((set->fb->bits_per_pixel != |
712531bf JB |
830 | set->crtc->fb->bits_per_pixel) || |
831 | set->fb->depth != set->crtc->fb->depth) | |
832 | fb_changed = true; | |
f453ba04 | 833 | else |
712531bf | 834 | fb_changed = true; |
f453ba04 DA |
835 | } |
836 | ||
837 | if (set->x != set->crtc->x || set->y != set->crtc->y) | |
712531bf | 838 | fb_changed = true; |
f453ba04 DA |
839 | |
840 | if (set->mode && !drm_mode_equal(set->mode, &set->crtc->mode)) { | |
58367ed6 | 841 | DRM_DEBUG_KMS("modes are different, full mode set\n"); |
f453ba04 DA |
842 | drm_mode_debug_printmodeline(&set->crtc->mode); |
843 | drm_mode_debug_printmodeline(set->mode); | |
712531bf | 844 | mode_changed = true; |
f453ba04 DA |
845 | } |
846 | ||
847 | /* a) traverse passed in connector list and get encoders for them */ | |
848 | count = 0; | |
849 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
850 | struct drm_connector_helper_funcs *connector_funcs = | |
851 | connector->helper_private; | |
f453ba04 DA |
852 | new_encoder = connector->encoder; |
853 | for (ro = 0; ro < set->num_connectors; ro++) { | |
854 | if (set->connectors[ro] == connector) { | |
855 | new_encoder = connector_funcs->best_encoder(connector); | |
856 | /* if we can't get an encoder for a connector | |
857 | we are setting now - then fail */ | |
858 | if (new_encoder == NULL) | |
859 | /* don't break so fail path works correct */ | |
860 | fail = 1; | |
861 | break; | |
862 | } | |
863 | } | |
864 | ||
865 | if (new_encoder != connector->encoder) { | |
58367ed6 | 866 | DRM_DEBUG_KMS("encoder changed, full mode switch\n"); |
712531bf | 867 | mode_changed = true; |
ff846ab7 MM |
868 | /* If the encoder is reused for another connector, then |
869 | * the appropriate crtc will be set later. | |
870 | */ | |
ff6fdbed MM |
871 | if (connector->encoder) |
872 | connector->encoder->crtc = NULL; | |
f453ba04 DA |
873 | connector->encoder = new_encoder; |
874 | } | |
875 | } | |
876 | ||
877 | if (fail) { | |
878 | ret = -EINVAL; | |
e67aae79 | 879 | goto fail; |
f453ba04 DA |
880 | } |
881 | ||
882 | count = 0; | |
883 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
884 | if (!connector->encoder) | |
885 | continue; | |
886 | ||
f453ba04 DA |
887 | if (connector->encoder->crtc == set->crtc) |
888 | new_crtc = NULL; | |
889 | else | |
890 | new_crtc = connector->encoder->crtc; | |
891 | ||
892 | for (ro = 0; ro < set->num_connectors; ro++) { | |
893 | if (set->connectors[ro] == connector) | |
894 | new_crtc = set->crtc; | |
895 | } | |
7bec756c JB |
896 | |
897 | /* Make sure the new CRTC will work with the encoder */ | |
898 | if (new_crtc && | |
899 | !drm_encoder_crtc_ok(connector->encoder, new_crtc)) { | |
900 | ret = -EINVAL; | |
e67aae79 | 901 | goto fail; |
7bec756c | 902 | } |
f453ba04 | 903 | if (new_crtc != connector->encoder->crtc) { |
58367ed6 | 904 | DRM_DEBUG_KMS("crtc changed, full mode switch\n"); |
712531bf | 905 | mode_changed = true; |
f453ba04 DA |
906 | connector->encoder->crtc = new_crtc; |
907 | } | |
58367ed6 | 908 | DRM_DEBUG_KMS("setting connector %d crtc to %p\n", |
7bec756c | 909 | connector->base.id, new_crtc); |
f453ba04 DA |
910 | } |
911 | ||
912 | /* mode_set_base is not a required function */ | |
712531bf JB |
913 | if (fb_changed && !crtc_funcs->mode_set_base) |
914 | mode_changed = true; | |
f453ba04 | 915 | |
712531bf | 916 | if (mode_changed) { |
3c4fdcfb | 917 | old_fb = set->crtc->fb; |
f453ba04 DA |
918 | set->crtc->fb = set->fb; |
919 | set->crtc->enabled = (set->mode != NULL); | |
920 | if (set->mode != NULL) { | |
58367ed6 ZY |
921 | DRM_DEBUG_KMS("attempting to set mode from" |
922 | " userspace\n"); | |
f453ba04 DA |
923 | drm_mode_debug_printmodeline(set->mode); |
924 | if (!drm_crtc_helper_set_mode(set->crtc, set->mode, | |
3c4fdcfb KH |
925 | set->x, set->y, |
926 | old_fb)) { | |
5c3b82e2 CW |
927 | DRM_ERROR("failed to set mode on crtc %p\n", |
928 | set->crtc); | |
f453ba04 | 929 | ret = -EINVAL; |
e67aae79 | 930 | goto fail; |
f453ba04 DA |
931 | } |
932 | /* TODO are these needed? */ | |
933 | set->crtc->desired_x = set->x; | |
934 | set->crtc->desired_y = set->y; | |
935 | set->crtc->desired_mode = set->mode; | |
936 | } | |
937 | drm_helper_disable_unused_functions(dev); | |
712531bf | 938 | } else if (fb_changed) { |
9b1596af BS |
939 | set->crtc->x = set->x; |
940 | set->crtc->y = set->y; | |
941 | ||
3c4fdcfb | 942 | old_fb = set->crtc->fb; |
f453ba04 DA |
943 | if (set->crtc->fb != set->fb) |
944 | set->crtc->fb = set->fb; | |
5c3b82e2 CW |
945 | ret = crtc_funcs->mode_set_base(set->crtc, |
946 | set->x, set->y, old_fb); | |
947 | if (ret != 0) | |
e67aae79 | 948 | goto fail; |
f453ba04 DA |
949 | } |
950 | ||
e67aae79 | 951 | kfree(save_connectors); |
f453ba04 DA |
952 | kfree(save_encoders); |
953 | kfree(save_crtcs); | |
954 | return 0; | |
955 | ||
e67aae79 MM |
956 | fail: |
957 | /* Restore all previous data. */ | |
f453ba04 | 958 | count = 0; |
e67aae79 MM |
959 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
960 | *crtc = save_crtcs[count++]; | |
961 | } | |
e62fb64e | 962 | |
e67aae79 MM |
963 | count = 0; |
964 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
965 | *encoder = save_encoders[count++]; | |
e62fb64e | 966 | } |
e67aae79 | 967 | |
f453ba04 DA |
968 | count = 0; |
969 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
e67aae79 | 970 | *connector = save_connectors[count++]; |
f453ba04 | 971 | } |
e67aae79 MM |
972 | |
973 | kfree(save_connectors); | |
f453ba04 | 974 | kfree(save_encoders); |
e67aae79 | 975 | kfree(save_crtcs); |
f453ba04 DA |
976 | return ret; |
977 | } | |
978 | EXPORT_SYMBOL(drm_crtc_helper_set_config); | |
979 | ||
980 | bool drm_helper_plugged_event(struct drm_device *dev) | |
981 | { | |
58367ed6 | 982 | DRM_DEBUG_KMS("\n"); |
f453ba04 DA |
983 | |
984 | drm_helper_probe_connector_modes(dev, dev->mode_config.max_width, | |
985 | dev->mode_config.max_height); | |
986 | ||
987 | drm_setup_crtcs(dev); | |
988 | ||
989 | /* alert the driver fb layer */ | |
990 | dev->mode_config.funcs->fb_changed(dev); | |
991 | ||
992 | /* FIXME: send hotplug event */ | |
993 | return true; | |
994 | } | |
995 | /** | |
996 | * drm_initial_config - setup a sane initial connector configuration | |
997 | * @dev: DRM device | |
f453ba04 DA |
998 | * |
999 | * LOCKING: | |
1000 | * Called at init time, must take mode config lock. | |
1001 | * | |
1002 | * Scan the CRTCs and connectors and try to put together an initial setup. | |
1003 | * At the moment, this is a cloned configuration across all heads with | |
1004 | * a new framebuffer object as the backing store. | |
1005 | * | |
1006 | * RETURNS: | |
1007 | * Zero if everything went ok, nonzero otherwise. | |
1008 | */ | |
7a1fb5d0 | 1009 | bool drm_helper_initial_config(struct drm_device *dev) |
f453ba04 | 1010 | { |
40a518d9 | 1011 | int count = 0; |
f453ba04 | 1012 | |
d50ba256 DA |
1013 | drm_fb_helper_parse_command_line(dev); |
1014 | ||
40a518d9 JB |
1015 | count = drm_helper_probe_connector_modes(dev, |
1016 | dev->mode_config.max_width, | |
1017 | dev->mode_config.max_height); | |
1018 | ||
1019 | /* | |
575dc34e | 1020 | * we shouldn't end up with no modes here. |
40a518d9 | 1021 | */ |
d50ba256 | 1022 | WARN(!count, "No connectors reported connected with modes\n"); |
40a518d9 JB |
1023 | |
1024 | drm_setup_crtcs(dev); | |
1025 | ||
1026 | /* alert the driver fb layer */ | |
1027 | dev->mode_config.funcs->fb_changed(dev); | |
1028 | ||
1029 | return 0; | |
f453ba04 DA |
1030 | } |
1031 | EXPORT_SYMBOL(drm_helper_initial_config); | |
1032 | ||
c9fb15f6 KP |
1033 | static int drm_helper_choose_encoder_dpms(struct drm_encoder *encoder) |
1034 | { | |
1035 | int dpms = DRM_MODE_DPMS_OFF; | |
1036 | struct drm_connector *connector; | |
1037 | struct drm_device *dev = encoder->dev; | |
1038 | ||
1039 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) | |
1040 | if (connector->encoder == encoder) | |
1041 | if (connector->dpms < dpms) | |
1042 | dpms = connector->dpms; | |
1043 | return dpms; | |
1044 | } | |
1045 | ||
1046 | static int drm_helper_choose_crtc_dpms(struct drm_crtc *crtc) | |
1047 | { | |
1048 | int dpms = DRM_MODE_DPMS_OFF; | |
1049 | struct drm_connector *connector; | |
1050 | struct drm_device *dev = crtc->dev; | |
1051 | ||
1052 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) | |
1053 | if (connector->encoder && connector->encoder->crtc == crtc) | |
1054 | if (connector->dpms < dpms) | |
1055 | dpms = connector->dpms; | |
1056 | return dpms; | |
1057 | } | |
1058 | ||
1059 | /** | |
1060 | * drm_helper_connector_dpms | |
1061 | * @connector affected connector | |
1062 | * @mode DPMS mode | |
1063 | * | |
1064 | * Calls the low-level connector DPMS function, then | |
1065 | * calls appropriate encoder and crtc DPMS functions as well | |
1066 | */ | |
1067 | void drm_helper_connector_dpms(struct drm_connector *connector, int mode) | |
1068 | { | |
1069 | struct drm_encoder *encoder = connector->encoder; | |
1070 | struct drm_crtc *crtc = encoder ? encoder->crtc : NULL; | |
1071 | int old_dpms; | |
1072 | ||
1073 | if (mode == connector->dpms) | |
1074 | return; | |
1075 | ||
1076 | old_dpms = connector->dpms; | |
1077 | connector->dpms = mode; | |
1078 | ||
1079 | /* from off to on, do crtc then encoder */ | |
1080 | if (mode < old_dpms) { | |
1081 | if (crtc) { | |
1082 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; | |
1083 | if (crtc_funcs->dpms) | |
1084 | (*crtc_funcs->dpms) (crtc, | |
1085 | drm_helper_choose_crtc_dpms(crtc)); | |
1086 | } | |
1087 | if (encoder) { | |
1088 | struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; | |
1089 | if (encoder_funcs->dpms) | |
1090 | (*encoder_funcs->dpms) (encoder, | |
1091 | drm_helper_choose_encoder_dpms(encoder)); | |
1092 | } | |
1093 | } | |
1094 | ||
1095 | /* from on to off, do encoder then crtc */ | |
1096 | if (mode > old_dpms) { | |
1097 | if (encoder) { | |
1098 | struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; | |
1099 | if (encoder_funcs->dpms) | |
1100 | (*encoder_funcs->dpms) (encoder, | |
1101 | drm_helper_choose_encoder_dpms(encoder)); | |
1102 | } | |
1103 | if (crtc) { | |
1104 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; | |
1105 | if (crtc_funcs->dpms) | |
1106 | (*crtc_funcs->dpms) (crtc, | |
1107 | drm_helper_choose_crtc_dpms(crtc)); | |
1108 | } | |
1109 | } | |
1110 | ||
1111 | return; | |
1112 | } | |
1113 | EXPORT_SYMBOL(drm_helper_connector_dpms); | |
1114 | ||
f453ba04 DA |
1115 | /** |
1116 | * drm_hotplug_stage_two | |
1117 | * @dev DRM device | |
1118 | * @connector hotpluged connector | |
1119 | * | |
1120 | * LOCKING. | |
1121 | * Caller must hold mode config lock, function might grab struct lock. | |
1122 | * | |
1123 | * Stage two of a hotplug. | |
1124 | * | |
1125 | * RETURNS: | |
1126 | * Zero on success, errno on failure. | |
1127 | */ | |
1128 | int drm_helper_hotplug_stage_two(struct drm_device *dev) | |
1129 | { | |
f453ba04 DA |
1130 | drm_helper_plugged_event(dev); |
1131 | ||
1132 | return 0; | |
1133 | } | |
1134 | EXPORT_SYMBOL(drm_helper_hotplug_stage_two); | |
1135 | ||
1136 | int drm_helper_mode_fill_fb_struct(struct drm_framebuffer *fb, | |
1137 | struct drm_mode_fb_cmd *mode_cmd) | |
1138 | { | |
1139 | fb->width = mode_cmd->width; | |
1140 | fb->height = mode_cmd->height; | |
1141 | fb->pitch = mode_cmd->pitch; | |
1142 | fb->bits_per_pixel = mode_cmd->bpp; | |
1143 | fb->depth = mode_cmd->depth; | |
1144 | ||
1145 | return 0; | |
1146 | } | |
1147 | EXPORT_SYMBOL(drm_helper_mode_fill_fb_struct); | |
1148 | ||
1149 | int drm_helper_resume_force_mode(struct drm_device *dev) | |
1150 | { | |
1151 | struct drm_crtc *crtc; | |
1152 | int ret; | |
1153 | ||
1154 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
1155 | ||
1156 | if (!crtc->enabled) | |
1157 | continue; | |
1158 | ||
3c4fdcfb KH |
1159 | ret = drm_crtc_helper_set_mode(crtc, &crtc->mode, |
1160 | crtc->x, crtc->y, crtc->fb); | |
f453ba04 DA |
1161 | |
1162 | if (ret == false) | |
1163 | DRM_ERROR("failed to set mode on crtc %p\n", crtc); | |
1164 | } | |
af4fcb57 ZY |
1165 | /* disable the unused connectors while restoring the modesetting */ |
1166 | drm_helper_disable_unused_functions(dev); | |
f453ba04 DA |
1167 | return 0; |
1168 | } | |
1169 | EXPORT_SYMBOL(drm_helper_resume_force_mode); |