]>
Commit | Line | Data |
---|---|---|
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; | |
8ef8678c DA |
282 | struct drm_fb_helper_cmdline_mode *cmdline_mode; |
283 | ||
284 | if (!fb_help_conn) | |
285 | return false; | |
286 | ||
287 | cmdline_mode = &fb_help_conn->cmdline_mode; | |
d50ba256 DA |
288 | return cmdline_mode->specified; |
289 | } | |
290 | ||
291 | static struct drm_display_mode *drm_pick_cmdline_mode(struct drm_connector *connector, int width, int height) | |
292 | { | |
293 | struct drm_fb_helper_connector *fb_help_conn = connector->fb_helper_private; | |
8ef8678c | 294 | struct drm_fb_helper_cmdline_mode *cmdline_mode; |
d50ba256 DA |
295 | struct drm_display_mode *mode = NULL; |
296 | ||
8ef8678c DA |
297 | if (!fb_help_conn) |
298 | return mode; | |
299 | ||
300 | cmdline_mode = &fb_help_conn->cmdline_mode; | |
d50ba256 DA |
301 | if (cmdline_mode->specified == false) |
302 | return mode; | |
303 | ||
304 | /* attempt to find a matching mode in the list of modes | |
305 | * we have gotten so far, if not add a CVT mode that conforms | |
306 | */ | |
307 | if (cmdline_mode->rb || cmdline_mode->margins) | |
308 | goto create_mode; | |
309 | ||
310 | list_for_each_entry(mode, &connector->modes, head) { | |
311 | /* check width/height */ | |
312 | if (mode->hdisplay != cmdline_mode->xres || | |
313 | mode->vdisplay != cmdline_mode->yres) | |
314 | continue; | |
315 | ||
316 | if (cmdline_mode->refresh_specified) { | |
317 | if (mode->vrefresh != cmdline_mode->refresh) | |
318 | continue; | |
319 | } | |
320 | ||
321 | if (cmdline_mode->interlace) { | |
322 | if (!(mode->flags & DRM_MODE_FLAG_INTERLACE)) | |
323 | continue; | |
324 | } | |
325 | return mode; | |
326 | } | |
327 | ||
328 | create_mode: | |
329 | mode = drm_cvt_mode(connector->dev, cmdline_mode->xres, | |
330 | cmdline_mode->yres, | |
331 | cmdline_mode->refresh_specified ? cmdline_mode->refresh : 60, | |
332 | cmdline_mode->rb, cmdline_mode->interlace, | |
333 | cmdline_mode->margins); | |
334 | list_add(&mode->head, &connector->modes); | |
335 | return mode; | |
336 | } | |
337 | ||
f453ba04 DA |
338 | static bool drm_connector_enabled(struct drm_connector *connector, bool strict) |
339 | { | |
340 | bool enable; | |
341 | ||
342 | if (strict) { | |
343 | enable = connector->status == connector_status_connected; | |
344 | } else { | |
345 | enable = connector->status != connector_status_disconnected; | |
346 | } | |
347 | return enable; | |
348 | } | |
349 | ||
350 | static void drm_enable_connectors(struct drm_device *dev, bool *enabled) | |
351 | { | |
352 | bool any_enabled = false; | |
353 | struct drm_connector *connector; | |
354 | int i = 0; | |
355 | ||
356 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
357 | enabled[i] = drm_connector_enabled(connector, true); | |
58367ed6 | 358 | DRM_DEBUG_KMS("connector %d enabled? %s\n", connector->base.id, |
40a518d9 | 359 | enabled[i] ? "yes" : "no"); |
f453ba04 DA |
360 | any_enabled |= enabled[i]; |
361 | i++; | |
362 | } | |
363 | ||
364 | if (any_enabled) | |
365 | return; | |
366 | ||
367 | i = 0; | |
368 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
369 | enabled[i] = drm_connector_enabled(connector, false); | |
370 | i++; | |
371 | } | |
372 | } | |
373 | ||
374 | static bool drm_target_preferred(struct drm_device *dev, | |
375 | struct drm_display_mode **modes, | |
376 | bool *enabled, int width, int height) | |
377 | { | |
378 | struct drm_connector *connector; | |
379 | int i = 0; | |
380 | ||
381 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
382 | ||
383 | if (enabled[i] == false) { | |
384 | i++; | |
385 | continue; | |
386 | } | |
387 | ||
d50ba256 DA |
388 | DRM_DEBUG_KMS("looking for cmdline mode on connector %d\n", |
389 | connector->base.id); | |
40a518d9 | 390 | |
d50ba256 DA |
391 | /* got for command line mode first */ |
392 | modes[i] = drm_pick_cmdline_mode(connector, width, height); | |
393 | if (!modes[i]) { | |
394 | DRM_DEBUG_KMS("looking for preferred mode on connector %d\n", | |
395 | connector->base.id); | |
396 | modes[i] = drm_has_preferred_mode(connector, width, height); | |
397 | } | |
40a518d9 JB |
398 | /* No preferred modes, pick one off the list */ |
399 | if (!modes[i] && !list_empty(&connector->modes)) { | |
f453ba04 DA |
400 | list_for_each_entry(modes[i], &connector->modes, head) |
401 | break; | |
402 | } | |
58367ed6 | 403 | DRM_DEBUG_KMS("found mode %s\n", modes[i] ? modes[i]->name : |
40a518d9 | 404 | "none"); |
f453ba04 DA |
405 | i++; |
406 | } | |
407 | return true; | |
408 | } | |
409 | ||
410 | static int drm_pick_crtcs(struct drm_device *dev, | |
411 | struct drm_crtc **best_crtcs, | |
412 | struct drm_display_mode **modes, | |
413 | int n, int width, int height) | |
414 | { | |
415 | int c, o; | |
416 | struct drm_connector *connector; | |
417 | struct drm_connector_helper_funcs *connector_funcs; | |
418 | struct drm_encoder *encoder; | |
419 | struct drm_crtc *best_crtc; | |
420 | int my_score, best_score, score; | |
421 | struct drm_crtc **crtcs, *crtc; | |
422 | ||
423 | if (n == dev->mode_config.num_connector) | |
424 | return 0; | |
425 | c = 0; | |
426 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
427 | if (c == n) | |
428 | break; | |
429 | c++; | |
430 | } | |
431 | ||
432 | best_crtcs[n] = NULL; | |
433 | best_crtc = NULL; | |
434 | best_score = drm_pick_crtcs(dev, best_crtcs, modes, n+1, width, height); | |
435 | if (modes[n] == NULL) | |
436 | return best_score; | |
437 | ||
438 | crtcs = kmalloc(dev->mode_config.num_connector * | |
439 | sizeof(struct drm_crtc *), GFP_KERNEL); | |
440 | if (!crtcs) | |
441 | return best_score; | |
442 | ||
443 | my_score = 1; | |
444 | if (connector->status == connector_status_connected) | |
445 | my_score++; | |
d50ba256 DA |
446 | if (drm_has_cmdline_mode(connector)) |
447 | my_score++; | |
f453ba04 DA |
448 | if (drm_has_preferred_mode(connector, width, height)) |
449 | my_score++; | |
450 | ||
451 | connector_funcs = connector->helper_private; | |
452 | encoder = connector_funcs->best_encoder(connector); | |
453 | if (!encoder) | |
454 | goto out; | |
455 | ||
456 | connector->encoder = encoder; | |
457 | ||
458 | /* select a crtc for this connector and then attempt to configure | |
459 | remaining connectors */ | |
460 | c = 0; | |
461 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
462 | ||
a3a0544b | 463 | if ((encoder->possible_crtcs & (1 << c)) == 0) { |
f453ba04 DA |
464 | c++; |
465 | continue; | |
466 | } | |
467 | ||
468 | for (o = 0; o < n; o++) | |
469 | if (best_crtcs[o] == crtc) | |
470 | break; | |
471 | ||
472 | if (o < n) { | |
473 | /* ignore cloning for now */ | |
474 | c++; | |
475 | continue; | |
476 | } | |
477 | ||
478 | crtcs[n] = crtc; | |
479 | memcpy(crtcs, best_crtcs, n * sizeof(struct drm_crtc *)); | |
480 | score = my_score + drm_pick_crtcs(dev, crtcs, modes, n + 1, | |
481 | width, height); | |
482 | if (score > best_score) { | |
483 | best_crtc = crtc; | |
484 | best_score = score; | |
485 | memcpy(best_crtcs, crtcs, | |
486 | dev->mode_config.num_connector * | |
487 | sizeof(struct drm_crtc *)); | |
488 | } | |
489 | c++; | |
490 | } | |
491 | out: | |
492 | kfree(crtcs); | |
493 | return best_score; | |
494 | } | |
495 | ||
496 | static void drm_setup_crtcs(struct drm_device *dev) | |
497 | { | |
498 | struct drm_crtc **crtcs; | |
499 | struct drm_display_mode **modes; | |
500 | struct drm_encoder *encoder; | |
501 | struct drm_connector *connector; | |
502 | bool *enabled; | |
503 | int width, height; | |
504 | int i, ret; | |
505 | ||
58367ed6 | 506 | DRM_DEBUG_KMS("\n"); |
40a518d9 | 507 | |
f453ba04 DA |
508 | width = dev->mode_config.max_width; |
509 | height = dev->mode_config.max_height; | |
510 | ||
511 | /* clean out all the encoder/crtc combos */ | |
512 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
513 | encoder->crtc = NULL; | |
514 | } | |
515 | ||
516 | crtcs = kcalloc(dev->mode_config.num_connector, | |
517 | sizeof(struct drm_crtc *), GFP_KERNEL); | |
518 | modes = kcalloc(dev->mode_config.num_connector, | |
519 | sizeof(struct drm_display_mode *), GFP_KERNEL); | |
520 | enabled = kcalloc(dev->mode_config.num_connector, | |
521 | sizeof(bool), GFP_KERNEL); | |
522 | ||
523 | drm_enable_connectors(dev, enabled); | |
524 | ||
525 | ret = drm_target_preferred(dev, modes, enabled, width, height); | |
526 | if (!ret) | |
527 | DRM_ERROR("Unable to find initial modes\n"); | |
528 | ||
58367ed6 | 529 | DRM_DEBUG_KMS("picking CRTCs for %dx%d config\n", width, height); |
40a518d9 | 530 | |
f453ba04 DA |
531 | drm_pick_crtcs(dev, crtcs, modes, 0, width, height); |
532 | ||
533 | i = 0; | |
534 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
535 | struct drm_display_mode *mode = modes[i]; | |
536 | struct drm_crtc *crtc = crtcs[i]; | |
537 | ||
538 | if (connector->encoder == NULL) { | |
539 | i++; | |
540 | continue; | |
541 | } | |
542 | ||
543 | if (mode && crtc) { | |
58367ed6 | 544 | DRM_DEBUG_KMS("desired mode %s set on crtc %d\n", |
40a518d9 | 545 | mode->name, crtc->base.id); |
f453ba04 DA |
546 | crtc->desired_mode = mode; |
547 | connector->encoder->crtc = crtc; | |
a3a0544b | 548 | } else { |
f453ba04 | 549 | connector->encoder->crtc = NULL; |
a3a0544b DA |
550 | connector->encoder = NULL; |
551 | } | |
f453ba04 DA |
552 | i++; |
553 | } | |
554 | ||
555 | kfree(crtcs); | |
556 | kfree(modes); | |
557 | kfree(enabled); | |
558 | } | |
7bec756c JB |
559 | |
560 | /** | |
561 | * drm_encoder_crtc_ok - can a given crtc drive a given encoder? | |
562 | * @encoder: encoder to test | |
563 | * @crtc: crtc to test | |
564 | * | |
565 | * Return false if @encoder can't be driven by @crtc, true otherwise. | |
566 | */ | |
567 | static bool drm_encoder_crtc_ok(struct drm_encoder *encoder, | |
568 | struct drm_crtc *crtc) | |
569 | { | |
570 | struct drm_device *dev; | |
571 | struct drm_crtc *tmp; | |
572 | int crtc_mask = 1; | |
573 | ||
574 | WARN(!crtc, "checking null crtc?"); | |
575 | ||
576 | dev = crtc->dev; | |
577 | ||
578 | list_for_each_entry(tmp, &dev->mode_config.crtc_list, head) { | |
579 | if (tmp == crtc) | |
580 | break; | |
581 | crtc_mask <<= 1; | |
582 | } | |
583 | ||
584 | if (encoder->possible_crtcs & crtc_mask) | |
585 | return true; | |
586 | return false; | |
587 | } | |
588 | ||
589 | /* | |
590 | * Check the CRTC we're going to map each output to vs. its current | |
591 | * CRTC. If they don't match, we have to disable the output and the CRTC | |
592 | * since the driver will have to re-route things. | |
593 | */ | |
594 | static void | |
595 | drm_crtc_prepare_encoders(struct drm_device *dev) | |
596 | { | |
597 | struct drm_encoder_helper_funcs *encoder_funcs; | |
598 | struct drm_encoder *encoder; | |
599 | ||
600 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
601 | encoder_funcs = encoder->helper_private; | |
602 | /* Disable unused encoders */ | |
603 | if (encoder->crtc == NULL) | |
604 | (*encoder_funcs->dpms)(encoder, DRM_MODE_DPMS_OFF); | |
605 | /* Disable encoders whose CRTC is about to change */ | |
606 | if (encoder_funcs->get_crtc && | |
607 | encoder->crtc != (*encoder_funcs->get_crtc)(encoder)) | |
608 | (*encoder_funcs->dpms)(encoder, DRM_MODE_DPMS_OFF); | |
609 | } | |
610 | } | |
611 | ||
f453ba04 DA |
612 | /** |
613 | * drm_crtc_set_mode - set a mode | |
614 | * @crtc: CRTC to program | |
615 | * @mode: mode to use | |
616 | * @x: width of mode | |
617 | * @y: height of mode | |
618 | * | |
619 | * LOCKING: | |
620 | * Caller must hold mode config lock. | |
621 | * | |
622 | * Try to set @mode on @crtc. Give @crtc and its associated connectors a chance | |
623 | * to fixup or reject the mode prior to trying to set it. | |
624 | * | |
625 | * RETURNS: | |
626 | * True if the mode was set successfully, or false otherwise. | |
627 | */ | |
628 | bool drm_crtc_helper_set_mode(struct drm_crtc *crtc, | |
629 | struct drm_display_mode *mode, | |
3c4fdcfb KH |
630 | int x, int y, |
631 | struct drm_framebuffer *old_fb) | |
f453ba04 DA |
632 | { |
633 | struct drm_device *dev = crtc->dev; | |
634 | struct drm_display_mode *adjusted_mode, saved_mode; | |
635 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; | |
636 | struct drm_encoder_helper_funcs *encoder_funcs; | |
637 | int saved_x, saved_y; | |
638 | struct drm_encoder *encoder; | |
639 | bool ret = true; | |
640 | ||
641 | adjusted_mode = drm_mode_duplicate(dev, mode); | |
642 | ||
643 | crtc->enabled = drm_helper_crtc_in_use(crtc); | |
644 | ||
645 | if (!crtc->enabled) | |
646 | return true; | |
647 | ||
648 | saved_mode = crtc->mode; | |
649 | saved_x = crtc->x; | |
650 | saved_y = crtc->y; | |
651 | ||
652 | /* Update crtc values up front so the driver can rely on them for mode | |
653 | * setting. | |
654 | */ | |
655 | crtc->mode = *mode; | |
656 | crtc->x = x; | |
657 | crtc->y = y; | |
658 | ||
f453ba04 DA |
659 | /* Pass our mode to the connectors and the CRTC to give them a chance to |
660 | * adjust it according to limitations or connector properties, and also | |
661 | * a chance to reject the mode entirely. | |
662 | */ | |
663 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
664 | ||
665 | if (encoder->crtc != crtc) | |
666 | continue; | |
667 | encoder_funcs = encoder->helper_private; | |
668 | if (!(ret = encoder_funcs->mode_fixup(encoder, mode, | |
669 | adjusted_mode))) { | |
670 | goto done; | |
671 | } | |
672 | } | |
673 | ||
674 | if (!(ret = crtc_funcs->mode_fixup(crtc, mode, adjusted_mode))) { | |
675 | goto done; | |
676 | } | |
677 | ||
678 | /* Prepare the encoders and CRTCs before setting the mode. */ | |
679 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
680 | ||
681 | if (encoder->crtc != crtc) | |
682 | continue; | |
683 | encoder_funcs = encoder->helper_private; | |
684 | /* Disable the encoders as the first thing we do. */ | |
685 | encoder_funcs->prepare(encoder); | |
686 | } | |
687 | ||
7bec756c JB |
688 | drm_crtc_prepare_encoders(dev); |
689 | ||
f453ba04 DA |
690 | crtc_funcs->prepare(crtc); |
691 | ||
692 | /* Set up the DPLL and any encoders state that needs to adjust or depend | |
693 | * on the DPLL. | |
694 | */ | |
5c3b82e2 CW |
695 | ret = !crtc_funcs->mode_set(crtc, mode, adjusted_mode, x, y, old_fb); |
696 | if (!ret) | |
697 | goto done; | |
f453ba04 DA |
698 | |
699 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
700 | ||
701 | if (encoder->crtc != crtc) | |
702 | continue; | |
703 | ||
704 | DRM_INFO("%s: set mode %s %x\n", drm_get_encoder_name(encoder), | |
705 | mode->name, mode->base.id); | |
706 | encoder_funcs = encoder->helper_private; | |
707 | encoder_funcs->mode_set(encoder, mode, adjusted_mode); | |
708 | } | |
709 | ||
710 | /* Now enable the clocks, plane, pipe, and connectors that we set up. */ | |
711 | crtc_funcs->commit(crtc); | |
712 | ||
713 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
714 | ||
715 | if (encoder->crtc != crtc) | |
716 | continue; | |
717 | ||
718 | encoder_funcs = encoder->helper_private; | |
719 | encoder_funcs->commit(encoder); | |
720 | ||
721 | } | |
722 | ||
723 | /* XXX free adjustedmode */ | |
724 | drm_mode_destroy(dev, adjusted_mode); | |
725 | /* FIXME: add subpixel order */ | |
726 | done: | |
727 | if (!ret) { | |
728 | crtc->mode = saved_mode; | |
729 | crtc->x = saved_x; | |
730 | crtc->y = saved_y; | |
731 | } | |
732 | ||
733 | return ret; | |
734 | } | |
735 | EXPORT_SYMBOL(drm_crtc_helper_set_mode); | |
736 | ||
737 | ||
738 | /** | |
739 | * drm_crtc_helper_set_config - set a new config from userspace | |
740 | * @crtc: CRTC to setup | |
741 | * @crtc_info: user provided configuration | |
742 | * @new_mode: new mode to set | |
743 | * @connector_set: set of connectors for the new config | |
744 | * @fb: new framebuffer | |
745 | * | |
746 | * LOCKING: | |
747 | * Caller must hold mode config lock. | |
748 | * | |
749 | * Setup a new configuration, provided by the user in @crtc_info, and enable | |
750 | * it. | |
751 | * | |
752 | * RETURNS: | |
753 | * Zero. (FIXME) | |
754 | */ | |
755 | int drm_crtc_helper_set_config(struct drm_mode_set *set) | |
756 | { | |
757 | struct drm_device *dev; | |
e67aae79 MM |
758 | struct drm_crtc *save_crtcs, *new_crtc, *crtc; |
759 | struct drm_encoder *save_encoders, *new_encoder, *encoder; | |
7bec756c | 760 | struct drm_framebuffer *old_fb = NULL; |
4cb72b17 JB |
761 | bool mode_changed = false; /* if true do a full mode set */ |
762 | bool fb_changed = false; /* if true and !mode_changed just do a flip */ | |
e67aae79 | 763 | struct drm_connector *save_connectors, *connector; |
f453ba04 DA |
764 | int count = 0, ro, fail = 0; |
765 | struct drm_crtc_helper_funcs *crtc_funcs; | |
766 | int ret = 0; | |
767 | ||
58367ed6 | 768 | DRM_DEBUG_KMS("\n"); |
f453ba04 DA |
769 | |
770 | if (!set) | |
771 | return -EINVAL; | |
772 | ||
773 | if (!set->crtc) | |
774 | return -EINVAL; | |
775 | ||
776 | if (!set->crtc->helper_private) | |
777 | return -EINVAL; | |
778 | ||
779 | crtc_funcs = set->crtc->helper_private; | |
780 | ||
58367ed6 ZY |
781 | DRM_DEBUG_KMS("crtc: %p %d fb: %p connectors: %p num_connectors:" |
782 | " %d (x, y) (%i, %i)\n", | |
f453ba04 DA |
783 | set->crtc, set->crtc->base.id, set->fb, set->connectors, |
784 | (int)set->num_connectors, set->x, set->y); | |
785 | ||
786 | dev = set->crtc->dev; | |
787 | ||
e67aae79 MM |
788 | /* Allocate space for the backup of all (non-pointer) crtc, encoder and |
789 | * connector data. */ | |
790 | save_crtcs = kzalloc(dev->mode_config.num_crtc * | |
791 | sizeof(struct drm_crtc), GFP_KERNEL); | |
f453ba04 DA |
792 | if (!save_crtcs) |
793 | return -ENOMEM; | |
794 | ||
e67aae79 MM |
795 | save_encoders = kzalloc(dev->mode_config.num_encoder * |
796 | sizeof(struct drm_encoder), GFP_KERNEL); | |
f453ba04 DA |
797 | if (!save_encoders) { |
798 | kfree(save_crtcs); | |
799 | return -ENOMEM; | |
800 | } | |
801 | ||
e67aae79 MM |
802 | save_connectors = kzalloc(dev->mode_config.num_connector * |
803 | sizeof(struct drm_connector), GFP_KERNEL); | |
804 | if (!save_connectors) { | |
805 | kfree(save_crtcs); | |
806 | kfree(save_encoders); | |
807 | return -ENOMEM; | |
808 | } | |
809 | ||
810 | /* Copy data. Note that driver private data is not affected. | |
811 | * Should anything bad happen only the expected state is | |
812 | * restored, not the drivers personal bookkeeping. | |
813 | */ | |
814 | count = 0; | |
815 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
816 | save_crtcs[count++] = *crtc; | |
817 | } | |
818 | ||
819 | count = 0; | |
820 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
821 | save_encoders[count++] = *encoder; | |
822 | } | |
823 | ||
824 | count = 0; | |
825 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
826 | save_connectors[count++] = *connector; | |
827 | } | |
828 | ||
f453ba04 DA |
829 | /* We should be able to check here if the fb has the same properties |
830 | * and then just flip_or_move it */ | |
831 | if (set->crtc->fb != set->fb) { | |
712531bf | 832 | /* If we have no fb then treat it as a full mode set */ |
7bec756c | 833 | if (set->crtc->fb == NULL) { |
58367ed6 | 834 | DRM_DEBUG_KMS("crtc has no fb, full mode set\n"); |
712531bf | 835 | mode_changed = true; |
4cb72b17 JB |
836 | } else if (set->fb == NULL) { |
837 | mode_changed = true; | |
7bec756c | 838 | } else if ((set->fb->bits_per_pixel != |
712531bf JB |
839 | set->crtc->fb->bits_per_pixel) || |
840 | set->fb->depth != set->crtc->fb->depth) | |
841 | fb_changed = true; | |
f453ba04 | 842 | else |
712531bf | 843 | fb_changed = true; |
f453ba04 DA |
844 | } |
845 | ||
846 | if (set->x != set->crtc->x || set->y != set->crtc->y) | |
712531bf | 847 | fb_changed = true; |
f453ba04 DA |
848 | |
849 | if (set->mode && !drm_mode_equal(set->mode, &set->crtc->mode)) { | |
58367ed6 | 850 | DRM_DEBUG_KMS("modes are different, full mode set\n"); |
f453ba04 DA |
851 | drm_mode_debug_printmodeline(&set->crtc->mode); |
852 | drm_mode_debug_printmodeline(set->mode); | |
712531bf | 853 | mode_changed = true; |
f453ba04 DA |
854 | } |
855 | ||
856 | /* a) traverse passed in connector list and get encoders for them */ | |
857 | count = 0; | |
858 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
859 | struct drm_connector_helper_funcs *connector_funcs = | |
860 | connector->helper_private; | |
f453ba04 DA |
861 | new_encoder = connector->encoder; |
862 | for (ro = 0; ro < set->num_connectors; ro++) { | |
863 | if (set->connectors[ro] == connector) { | |
864 | new_encoder = connector_funcs->best_encoder(connector); | |
865 | /* if we can't get an encoder for a connector | |
866 | we are setting now - then fail */ | |
867 | if (new_encoder == NULL) | |
868 | /* don't break so fail path works correct */ | |
869 | fail = 1; | |
870 | break; | |
871 | } | |
872 | } | |
873 | ||
874 | if (new_encoder != connector->encoder) { | |
58367ed6 | 875 | DRM_DEBUG_KMS("encoder changed, full mode switch\n"); |
712531bf | 876 | mode_changed = true; |
ff846ab7 MM |
877 | /* If the encoder is reused for another connector, then |
878 | * the appropriate crtc will be set later. | |
879 | */ | |
ff6fdbed MM |
880 | if (connector->encoder) |
881 | connector->encoder->crtc = NULL; | |
f453ba04 DA |
882 | connector->encoder = new_encoder; |
883 | } | |
884 | } | |
885 | ||
886 | if (fail) { | |
887 | ret = -EINVAL; | |
e67aae79 | 888 | goto fail; |
f453ba04 DA |
889 | } |
890 | ||
891 | count = 0; | |
892 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
893 | if (!connector->encoder) | |
894 | continue; | |
895 | ||
f453ba04 DA |
896 | if (connector->encoder->crtc == set->crtc) |
897 | new_crtc = NULL; | |
898 | else | |
899 | new_crtc = connector->encoder->crtc; | |
900 | ||
901 | for (ro = 0; ro < set->num_connectors; ro++) { | |
902 | if (set->connectors[ro] == connector) | |
903 | new_crtc = set->crtc; | |
904 | } | |
7bec756c JB |
905 | |
906 | /* Make sure the new CRTC will work with the encoder */ | |
907 | if (new_crtc && | |
908 | !drm_encoder_crtc_ok(connector->encoder, new_crtc)) { | |
909 | ret = -EINVAL; | |
e67aae79 | 910 | goto fail; |
7bec756c | 911 | } |
f453ba04 | 912 | if (new_crtc != connector->encoder->crtc) { |
58367ed6 | 913 | DRM_DEBUG_KMS("crtc changed, full mode switch\n"); |
712531bf | 914 | mode_changed = true; |
f453ba04 DA |
915 | connector->encoder->crtc = new_crtc; |
916 | } | |
58367ed6 | 917 | DRM_DEBUG_KMS("setting connector %d crtc to %p\n", |
7bec756c | 918 | connector->base.id, new_crtc); |
f453ba04 DA |
919 | } |
920 | ||
921 | /* mode_set_base is not a required function */ | |
712531bf JB |
922 | if (fb_changed && !crtc_funcs->mode_set_base) |
923 | mode_changed = true; | |
f453ba04 | 924 | |
712531bf | 925 | if (mode_changed) { |
3c4fdcfb | 926 | old_fb = set->crtc->fb; |
f453ba04 DA |
927 | set->crtc->fb = set->fb; |
928 | set->crtc->enabled = (set->mode != NULL); | |
929 | if (set->mode != NULL) { | |
58367ed6 ZY |
930 | DRM_DEBUG_KMS("attempting to set mode from" |
931 | " userspace\n"); | |
f453ba04 DA |
932 | drm_mode_debug_printmodeline(set->mode); |
933 | if (!drm_crtc_helper_set_mode(set->crtc, set->mode, | |
3c4fdcfb KH |
934 | set->x, set->y, |
935 | old_fb)) { | |
5c3b82e2 CW |
936 | DRM_ERROR("failed to set mode on crtc %p\n", |
937 | set->crtc); | |
f453ba04 | 938 | ret = -EINVAL; |
e67aae79 | 939 | goto fail; |
f453ba04 DA |
940 | } |
941 | /* TODO are these needed? */ | |
942 | set->crtc->desired_x = set->x; | |
943 | set->crtc->desired_y = set->y; | |
944 | set->crtc->desired_mode = set->mode; | |
945 | } | |
946 | drm_helper_disable_unused_functions(dev); | |
712531bf | 947 | } else if (fb_changed) { |
9b1596af BS |
948 | set->crtc->x = set->x; |
949 | set->crtc->y = set->y; | |
950 | ||
3c4fdcfb | 951 | old_fb = set->crtc->fb; |
f453ba04 DA |
952 | if (set->crtc->fb != set->fb) |
953 | set->crtc->fb = set->fb; | |
5c3b82e2 CW |
954 | ret = crtc_funcs->mode_set_base(set->crtc, |
955 | set->x, set->y, old_fb); | |
956 | if (ret != 0) | |
e67aae79 | 957 | goto fail; |
f453ba04 DA |
958 | } |
959 | ||
e67aae79 | 960 | kfree(save_connectors); |
f453ba04 DA |
961 | kfree(save_encoders); |
962 | kfree(save_crtcs); | |
963 | return 0; | |
964 | ||
e67aae79 MM |
965 | fail: |
966 | /* Restore all previous data. */ | |
f453ba04 | 967 | count = 0; |
e67aae79 MM |
968 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
969 | *crtc = save_crtcs[count++]; | |
970 | } | |
e62fb64e | 971 | |
e67aae79 MM |
972 | count = 0; |
973 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
974 | *encoder = save_encoders[count++]; | |
e62fb64e | 975 | } |
e67aae79 | 976 | |
f453ba04 DA |
977 | count = 0; |
978 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
e67aae79 | 979 | *connector = save_connectors[count++]; |
f453ba04 | 980 | } |
e67aae79 MM |
981 | |
982 | kfree(save_connectors); | |
f453ba04 | 983 | kfree(save_encoders); |
e67aae79 | 984 | kfree(save_crtcs); |
f453ba04 DA |
985 | return ret; |
986 | } | |
987 | EXPORT_SYMBOL(drm_crtc_helper_set_config); | |
988 | ||
989 | bool drm_helper_plugged_event(struct drm_device *dev) | |
990 | { | |
58367ed6 | 991 | DRM_DEBUG_KMS("\n"); |
f453ba04 DA |
992 | |
993 | drm_helper_probe_connector_modes(dev, dev->mode_config.max_width, | |
994 | dev->mode_config.max_height); | |
995 | ||
996 | drm_setup_crtcs(dev); | |
997 | ||
998 | /* alert the driver fb layer */ | |
999 | dev->mode_config.funcs->fb_changed(dev); | |
1000 | ||
1001 | /* FIXME: send hotplug event */ | |
1002 | return true; | |
1003 | } | |
1004 | /** | |
1005 | * drm_initial_config - setup a sane initial connector configuration | |
1006 | * @dev: DRM device | |
f453ba04 DA |
1007 | * |
1008 | * LOCKING: | |
1009 | * Called at init time, must take mode config lock. | |
1010 | * | |
1011 | * Scan the CRTCs and connectors and try to put together an initial setup. | |
1012 | * At the moment, this is a cloned configuration across all heads with | |
1013 | * a new framebuffer object as the backing store. | |
1014 | * | |
1015 | * RETURNS: | |
1016 | * Zero if everything went ok, nonzero otherwise. | |
1017 | */ | |
7a1fb5d0 | 1018 | bool drm_helper_initial_config(struct drm_device *dev) |
f453ba04 | 1019 | { |
40a518d9 | 1020 | int count = 0; |
f453ba04 | 1021 | |
d50ba256 DA |
1022 | drm_fb_helper_parse_command_line(dev); |
1023 | ||
40a518d9 JB |
1024 | count = drm_helper_probe_connector_modes(dev, |
1025 | dev->mode_config.max_width, | |
1026 | dev->mode_config.max_height); | |
1027 | ||
1028 | /* | |
575dc34e | 1029 | * we shouldn't end up with no modes here. |
40a518d9 | 1030 | */ |
d50ba256 | 1031 | WARN(!count, "No connectors reported connected with modes\n"); |
40a518d9 JB |
1032 | |
1033 | drm_setup_crtcs(dev); | |
1034 | ||
1035 | /* alert the driver fb layer */ | |
1036 | dev->mode_config.funcs->fb_changed(dev); | |
1037 | ||
1038 | return 0; | |
f453ba04 DA |
1039 | } |
1040 | EXPORT_SYMBOL(drm_helper_initial_config); | |
1041 | ||
c9fb15f6 KP |
1042 | static int drm_helper_choose_encoder_dpms(struct drm_encoder *encoder) |
1043 | { | |
1044 | int dpms = DRM_MODE_DPMS_OFF; | |
1045 | struct drm_connector *connector; | |
1046 | struct drm_device *dev = encoder->dev; | |
1047 | ||
1048 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) | |
1049 | if (connector->encoder == encoder) | |
1050 | if (connector->dpms < dpms) | |
1051 | dpms = connector->dpms; | |
1052 | return dpms; | |
1053 | } | |
1054 | ||
1055 | static int drm_helper_choose_crtc_dpms(struct drm_crtc *crtc) | |
1056 | { | |
1057 | int dpms = DRM_MODE_DPMS_OFF; | |
1058 | struct drm_connector *connector; | |
1059 | struct drm_device *dev = crtc->dev; | |
1060 | ||
1061 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) | |
1062 | if (connector->encoder && connector->encoder->crtc == crtc) | |
1063 | if (connector->dpms < dpms) | |
1064 | dpms = connector->dpms; | |
1065 | return dpms; | |
1066 | } | |
1067 | ||
1068 | /** | |
1069 | * drm_helper_connector_dpms | |
1070 | * @connector affected connector | |
1071 | * @mode DPMS mode | |
1072 | * | |
1073 | * Calls the low-level connector DPMS function, then | |
1074 | * calls appropriate encoder and crtc DPMS functions as well | |
1075 | */ | |
1076 | void drm_helper_connector_dpms(struct drm_connector *connector, int mode) | |
1077 | { | |
1078 | struct drm_encoder *encoder = connector->encoder; | |
1079 | struct drm_crtc *crtc = encoder ? encoder->crtc : NULL; | |
1080 | int old_dpms; | |
1081 | ||
1082 | if (mode == connector->dpms) | |
1083 | return; | |
1084 | ||
1085 | old_dpms = connector->dpms; | |
1086 | connector->dpms = mode; | |
1087 | ||
1088 | /* from off to on, do crtc then encoder */ | |
1089 | if (mode < old_dpms) { | |
1090 | if (crtc) { | |
1091 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; | |
1092 | if (crtc_funcs->dpms) | |
1093 | (*crtc_funcs->dpms) (crtc, | |
1094 | drm_helper_choose_crtc_dpms(crtc)); | |
1095 | } | |
1096 | if (encoder) { | |
1097 | struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; | |
1098 | if (encoder_funcs->dpms) | |
1099 | (*encoder_funcs->dpms) (encoder, | |
1100 | drm_helper_choose_encoder_dpms(encoder)); | |
1101 | } | |
1102 | } | |
1103 | ||
1104 | /* from on to off, do encoder then crtc */ | |
1105 | if (mode > old_dpms) { | |
1106 | if (encoder) { | |
1107 | struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; | |
1108 | if (encoder_funcs->dpms) | |
1109 | (*encoder_funcs->dpms) (encoder, | |
1110 | drm_helper_choose_encoder_dpms(encoder)); | |
1111 | } | |
1112 | if (crtc) { | |
1113 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; | |
1114 | if (crtc_funcs->dpms) | |
1115 | (*crtc_funcs->dpms) (crtc, | |
1116 | drm_helper_choose_crtc_dpms(crtc)); | |
1117 | } | |
1118 | } | |
1119 | ||
1120 | return; | |
1121 | } | |
1122 | EXPORT_SYMBOL(drm_helper_connector_dpms); | |
1123 | ||
f453ba04 DA |
1124 | /** |
1125 | * drm_hotplug_stage_two | |
1126 | * @dev DRM device | |
1127 | * @connector hotpluged connector | |
1128 | * | |
1129 | * LOCKING. | |
1130 | * Caller must hold mode config lock, function might grab struct lock. | |
1131 | * | |
1132 | * Stage two of a hotplug. | |
1133 | * | |
1134 | * RETURNS: | |
1135 | * Zero on success, errno on failure. | |
1136 | */ | |
1137 | int drm_helper_hotplug_stage_two(struct drm_device *dev) | |
1138 | { | |
f453ba04 DA |
1139 | drm_helper_plugged_event(dev); |
1140 | ||
1141 | return 0; | |
1142 | } | |
1143 | EXPORT_SYMBOL(drm_helper_hotplug_stage_two); | |
1144 | ||
1145 | int drm_helper_mode_fill_fb_struct(struct drm_framebuffer *fb, | |
1146 | struct drm_mode_fb_cmd *mode_cmd) | |
1147 | { | |
1148 | fb->width = mode_cmd->width; | |
1149 | fb->height = mode_cmd->height; | |
1150 | fb->pitch = mode_cmd->pitch; | |
1151 | fb->bits_per_pixel = mode_cmd->bpp; | |
1152 | fb->depth = mode_cmd->depth; | |
1153 | ||
1154 | return 0; | |
1155 | } | |
1156 | EXPORT_SYMBOL(drm_helper_mode_fill_fb_struct); | |
1157 | ||
1158 | int drm_helper_resume_force_mode(struct drm_device *dev) | |
1159 | { | |
1160 | struct drm_crtc *crtc; | |
1161 | int ret; | |
1162 | ||
1163 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
1164 | ||
1165 | if (!crtc->enabled) | |
1166 | continue; | |
1167 | ||
3c4fdcfb KH |
1168 | ret = drm_crtc_helper_set_mode(crtc, &crtc->mode, |
1169 | crtc->x, crtc->y, crtc->fb); | |
f453ba04 DA |
1170 | |
1171 | if (ret == false) | |
1172 | DRM_ERROR("failed to set mode on crtc %p\n", crtc); | |
1173 | } | |
af4fcb57 ZY |
1174 | /* disable the unused connectors while restoring the modesetting */ |
1175 | drm_helper_disable_unused_functions(dev); | |
f453ba04 DA |
1176 | return 0; |
1177 | } | |
1178 | EXPORT_SYMBOL(drm_helper_resume_force_mode); |