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)); |
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 | ||
40a518d9 | 157 | int drm_helper_probe_connector_modes(struct drm_device *dev, uint32_t maxX, |
f453ba04 DA |
158 | uint32_t maxY) |
159 | { | |
160 | struct drm_connector *connector; | |
40a518d9 | 161 | int count = 0; |
f453ba04 DA |
162 | |
163 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
40a518d9 JB |
164 | count += drm_helper_probe_single_connector_modes(connector, |
165 | maxX, maxY); | |
f453ba04 | 166 | } |
40a518d9 JB |
167 | |
168 | return count; | |
f453ba04 DA |
169 | } |
170 | EXPORT_SYMBOL(drm_helper_probe_connector_modes); | |
171 | ||
c9fb15f6 KP |
172 | /** |
173 | * drm_helper_encoder_in_use - check if a given encoder is in use | |
174 | * @encoder: encoder to check | |
175 | * | |
176 | * LOCKING: | |
177 | * Caller must hold mode config lock. | |
178 | * | |
179 | * Walk @encoders's DRM device's mode_config and see if it's in use. | |
180 | * | |
181 | * RETURNS: | |
182 | * True if @encoder is part of the mode_config, false otherwise. | |
183 | */ | |
184 | bool drm_helper_encoder_in_use(struct drm_encoder *encoder) | |
185 | { | |
186 | struct drm_connector *connector; | |
187 | struct drm_device *dev = encoder->dev; | |
188 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) | |
189 | if (connector->encoder == encoder) | |
190 | return true; | |
191 | return false; | |
192 | } | |
193 | EXPORT_SYMBOL(drm_helper_encoder_in_use); | |
194 | ||
f453ba04 DA |
195 | /** |
196 | * drm_helper_crtc_in_use - check if a given CRTC is in a mode_config | |
197 | * @crtc: CRTC to check | |
198 | * | |
199 | * LOCKING: | |
200 | * Caller must hold mode config lock. | |
201 | * | |
202 | * Walk @crtc's DRM device's mode_config and see if it's in use. | |
203 | * | |
204 | * RETURNS: | |
205 | * True if @crtc is part of the mode_config, false otherwise. | |
206 | */ | |
207 | bool drm_helper_crtc_in_use(struct drm_crtc *crtc) | |
208 | { | |
209 | struct drm_encoder *encoder; | |
210 | struct drm_device *dev = crtc->dev; | |
211 | /* FIXME: Locking around list access? */ | |
212 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) | |
c9fb15f6 | 213 | if (encoder->crtc == crtc && drm_helper_encoder_in_use(encoder)) |
f453ba04 DA |
214 | return true; |
215 | return false; | |
216 | } | |
217 | EXPORT_SYMBOL(drm_helper_crtc_in_use); | |
218 | ||
219 | /** | |
89347bb8 | 220 | * drm_helper_disable_unused_functions - disable unused objects |
f453ba04 DA |
221 | * @dev: DRM device |
222 | * | |
223 | * LOCKING: | |
224 | * Caller must hold mode config lock. | |
225 | * | |
226 | * If an connector or CRTC isn't part of @dev's mode_config, it can be disabled | |
227 | * by calling its dpms function, which should power it off. | |
228 | */ | |
229 | void drm_helper_disable_unused_functions(struct drm_device *dev) | |
230 | { | |
231 | struct drm_encoder *encoder; | |
a3a0544b | 232 | struct drm_connector *connector; |
f453ba04 DA |
233 | struct drm_encoder_helper_funcs *encoder_funcs; |
234 | struct drm_crtc *crtc; | |
235 | ||
a3a0544b DA |
236 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
237 | if (!connector->encoder) | |
238 | continue; | |
239 | if (connector->status == connector_status_disconnected) | |
240 | connector->encoder = NULL; | |
241 | } | |
242 | ||
f453ba04 DA |
243 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
244 | encoder_funcs = encoder->helper_private; | |
a3a0544b DA |
245 | if (!drm_helper_encoder_in_use(encoder)) { |
246 | if (encoder_funcs->disable) | |
247 | (*encoder_funcs->disable)(encoder); | |
248 | else | |
249 | (*encoder_funcs->dpms)(encoder, DRM_MODE_DPMS_OFF); | |
9c552dd7 DA |
250 | /* disconnector encoder from any connector */ |
251 | encoder->crtc = NULL; | |
a3a0544b | 252 | } |
f453ba04 DA |
253 | } |
254 | ||
255 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
256 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; | |
257 | crtc->enabled = drm_helper_crtc_in_use(crtc); | |
258 | if (!crtc->enabled) { | |
259 | crtc_funcs->dpms(crtc, DRM_MODE_DPMS_OFF); | |
260 | crtc->fb = NULL; | |
261 | } | |
262 | } | |
263 | } | |
264 | EXPORT_SYMBOL(drm_helper_disable_unused_functions); | |
265 | ||
266 | static struct drm_display_mode *drm_has_preferred_mode(struct drm_connector *connector, int width, int height) | |
267 | { | |
268 | struct drm_display_mode *mode; | |
269 | ||
270 | list_for_each_entry(mode, &connector->modes, head) { | |
271 | if (drm_mode_width(mode) > width || | |
272 | drm_mode_height(mode) > height) | |
273 | continue; | |
274 | if (mode->type & DRM_MODE_TYPE_PREFERRED) | |
275 | return mode; | |
276 | } | |
277 | return NULL; | |
278 | } | |
279 | ||
d50ba256 DA |
280 | static bool drm_has_cmdline_mode(struct drm_connector *connector) |
281 | { | |
282 | struct drm_fb_helper_connector *fb_help_conn = connector->fb_helper_private; | |
8ef8678c DA |
283 | struct drm_fb_helper_cmdline_mode *cmdline_mode; |
284 | ||
285 | if (!fb_help_conn) | |
286 | return false; | |
287 | ||
288 | cmdline_mode = &fb_help_conn->cmdline_mode; | |
d50ba256 DA |
289 | return cmdline_mode->specified; |
290 | } | |
291 | ||
292 | static struct drm_display_mode *drm_pick_cmdline_mode(struct drm_connector *connector, int width, int height) | |
293 | { | |
294 | struct drm_fb_helper_connector *fb_help_conn = connector->fb_helper_private; | |
8ef8678c | 295 | struct drm_fb_helper_cmdline_mode *cmdline_mode; |
d50ba256 DA |
296 | struct drm_display_mode *mode = NULL; |
297 | ||
8ef8678c DA |
298 | if (!fb_help_conn) |
299 | return mode; | |
300 | ||
301 | cmdline_mode = &fb_help_conn->cmdline_mode; | |
d50ba256 DA |
302 | if (cmdline_mode->specified == false) |
303 | return mode; | |
304 | ||
305 | /* attempt to find a matching mode in the list of modes | |
306 | * we have gotten so far, if not add a CVT mode that conforms | |
307 | */ | |
308 | if (cmdline_mode->rb || cmdline_mode->margins) | |
309 | goto create_mode; | |
310 | ||
311 | list_for_each_entry(mode, &connector->modes, head) { | |
312 | /* check width/height */ | |
313 | if (mode->hdisplay != cmdline_mode->xres || | |
314 | mode->vdisplay != cmdline_mode->yres) | |
315 | continue; | |
316 | ||
317 | if (cmdline_mode->refresh_specified) { | |
318 | if (mode->vrefresh != cmdline_mode->refresh) | |
319 | continue; | |
320 | } | |
321 | ||
322 | if (cmdline_mode->interlace) { | |
323 | if (!(mode->flags & DRM_MODE_FLAG_INTERLACE)) | |
324 | continue; | |
325 | } | |
326 | return mode; | |
327 | } | |
328 | ||
329 | create_mode: | |
330 | mode = drm_cvt_mode(connector->dev, cmdline_mode->xres, | |
331 | cmdline_mode->yres, | |
332 | cmdline_mode->refresh_specified ? cmdline_mode->refresh : 60, | |
333 | cmdline_mode->rb, cmdline_mode->interlace, | |
334 | cmdline_mode->margins); | |
eeba5751 | 335 | drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V); |
d50ba256 DA |
336 | list_add(&mode->head, &connector->modes); |
337 | return mode; | |
338 | } | |
339 | ||
f453ba04 DA |
340 | static bool drm_connector_enabled(struct drm_connector *connector, bool strict) |
341 | { | |
342 | bool enable; | |
343 | ||
344 | if (strict) { | |
345 | enable = connector->status == connector_status_connected; | |
346 | } else { | |
347 | enable = connector->status != connector_status_disconnected; | |
348 | } | |
349 | return enable; | |
350 | } | |
351 | ||
352 | static void drm_enable_connectors(struct drm_device *dev, bool *enabled) | |
353 | { | |
354 | bool any_enabled = false; | |
355 | struct drm_connector *connector; | |
356 | int i = 0; | |
357 | ||
358 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
359 | enabled[i] = drm_connector_enabled(connector, true); | |
58367ed6 | 360 | DRM_DEBUG_KMS("connector %d enabled? %s\n", connector->base.id, |
40a518d9 | 361 | enabled[i] ? "yes" : "no"); |
f453ba04 DA |
362 | any_enabled |= enabled[i]; |
363 | i++; | |
364 | } | |
365 | ||
366 | if (any_enabled) | |
367 | return; | |
368 | ||
369 | i = 0; | |
370 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
371 | enabled[i] = drm_connector_enabled(connector, false); | |
372 | i++; | |
373 | } | |
374 | } | |
375 | ||
376 | static bool drm_target_preferred(struct drm_device *dev, | |
377 | struct drm_display_mode **modes, | |
378 | bool *enabled, int width, int height) | |
379 | { | |
380 | struct drm_connector *connector; | |
381 | int i = 0; | |
382 | ||
383 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
384 | ||
385 | if (enabled[i] == false) { | |
386 | i++; | |
387 | continue; | |
388 | } | |
389 | ||
d50ba256 DA |
390 | DRM_DEBUG_KMS("looking for cmdline mode on connector %d\n", |
391 | connector->base.id); | |
40a518d9 | 392 | |
d50ba256 DA |
393 | /* got for command line mode first */ |
394 | modes[i] = drm_pick_cmdline_mode(connector, width, height); | |
395 | if (!modes[i]) { | |
396 | DRM_DEBUG_KMS("looking for preferred mode on connector %d\n", | |
397 | connector->base.id); | |
398 | modes[i] = drm_has_preferred_mode(connector, width, height); | |
399 | } | |
40a518d9 JB |
400 | /* No preferred modes, pick one off the list */ |
401 | if (!modes[i] && !list_empty(&connector->modes)) { | |
f453ba04 DA |
402 | list_for_each_entry(modes[i], &connector->modes, head) |
403 | break; | |
404 | } | |
58367ed6 | 405 | DRM_DEBUG_KMS("found mode %s\n", modes[i] ? modes[i]->name : |
40a518d9 | 406 | "none"); |
f453ba04 DA |
407 | i++; |
408 | } | |
409 | return true; | |
410 | } | |
411 | ||
412 | static int drm_pick_crtcs(struct drm_device *dev, | |
413 | struct drm_crtc **best_crtcs, | |
414 | struct drm_display_mode **modes, | |
415 | int n, int width, int height) | |
416 | { | |
417 | int c, o; | |
418 | struct drm_connector *connector; | |
419 | struct drm_connector_helper_funcs *connector_funcs; | |
420 | struct drm_encoder *encoder; | |
421 | struct drm_crtc *best_crtc; | |
422 | int my_score, best_score, score; | |
423 | struct drm_crtc **crtcs, *crtc; | |
424 | ||
425 | if (n == dev->mode_config.num_connector) | |
426 | return 0; | |
427 | c = 0; | |
428 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
429 | if (c == n) | |
430 | break; | |
431 | c++; | |
432 | } | |
433 | ||
434 | best_crtcs[n] = NULL; | |
435 | best_crtc = NULL; | |
436 | best_score = drm_pick_crtcs(dev, best_crtcs, modes, n+1, width, height); | |
437 | if (modes[n] == NULL) | |
438 | return best_score; | |
439 | ||
440 | crtcs = kmalloc(dev->mode_config.num_connector * | |
441 | sizeof(struct drm_crtc *), GFP_KERNEL); | |
442 | if (!crtcs) | |
443 | return best_score; | |
444 | ||
445 | my_score = 1; | |
446 | if (connector->status == connector_status_connected) | |
447 | my_score++; | |
d50ba256 DA |
448 | if (drm_has_cmdline_mode(connector)) |
449 | my_score++; | |
f453ba04 DA |
450 | if (drm_has_preferred_mode(connector, width, height)) |
451 | my_score++; | |
452 | ||
453 | connector_funcs = connector->helper_private; | |
454 | encoder = connector_funcs->best_encoder(connector); | |
455 | if (!encoder) | |
456 | goto out; | |
457 | ||
458 | connector->encoder = encoder; | |
459 | ||
460 | /* select a crtc for this connector and then attempt to configure | |
461 | remaining connectors */ | |
462 | c = 0; | |
463 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
464 | ||
a3a0544b | 465 | if ((encoder->possible_crtcs & (1 << c)) == 0) { |
f453ba04 DA |
466 | c++; |
467 | continue; | |
468 | } | |
469 | ||
470 | for (o = 0; o < n; o++) | |
471 | if (best_crtcs[o] == crtc) | |
472 | break; | |
473 | ||
474 | if (o < n) { | |
475 | /* ignore cloning for now */ | |
476 | c++; | |
477 | continue; | |
478 | } | |
479 | ||
480 | crtcs[n] = crtc; | |
481 | memcpy(crtcs, best_crtcs, n * sizeof(struct drm_crtc *)); | |
482 | score = my_score + drm_pick_crtcs(dev, crtcs, modes, n + 1, | |
483 | width, height); | |
484 | if (score > best_score) { | |
485 | best_crtc = crtc; | |
486 | best_score = score; | |
487 | memcpy(best_crtcs, crtcs, | |
488 | dev->mode_config.num_connector * | |
489 | sizeof(struct drm_crtc *)); | |
490 | } | |
491 | c++; | |
492 | } | |
493 | out: | |
494 | kfree(crtcs); | |
495 | return best_score; | |
496 | } | |
497 | ||
498 | static void drm_setup_crtcs(struct drm_device *dev) | |
499 | { | |
500 | struct drm_crtc **crtcs; | |
501 | struct drm_display_mode **modes; | |
502 | struct drm_encoder *encoder; | |
503 | struct drm_connector *connector; | |
504 | bool *enabled; | |
505 | int width, height; | |
506 | int i, ret; | |
507 | ||
58367ed6 | 508 | DRM_DEBUG_KMS("\n"); |
40a518d9 | 509 | |
f453ba04 DA |
510 | width = dev->mode_config.max_width; |
511 | height = dev->mode_config.max_height; | |
512 | ||
513 | /* clean out all the encoder/crtc combos */ | |
514 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
515 | encoder->crtc = NULL; | |
516 | } | |
517 | ||
518 | crtcs = kcalloc(dev->mode_config.num_connector, | |
519 | sizeof(struct drm_crtc *), GFP_KERNEL); | |
520 | modes = kcalloc(dev->mode_config.num_connector, | |
521 | sizeof(struct drm_display_mode *), GFP_KERNEL); | |
522 | enabled = kcalloc(dev->mode_config.num_connector, | |
523 | sizeof(bool), GFP_KERNEL); | |
524 | ||
525 | drm_enable_connectors(dev, enabled); | |
526 | ||
527 | ret = drm_target_preferred(dev, modes, enabled, width, height); | |
528 | if (!ret) | |
529 | DRM_ERROR("Unable to find initial modes\n"); | |
530 | ||
58367ed6 | 531 | DRM_DEBUG_KMS("picking CRTCs for %dx%d config\n", width, height); |
40a518d9 | 532 | |
f453ba04 DA |
533 | drm_pick_crtcs(dev, crtcs, modes, 0, width, height); |
534 | ||
535 | i = 0; | |
536 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
537 | struct drm_display_mode *mode = modes[i]; | |
538 | struct drm_crtc *crtc = crtcs[i]; | |
539 | ||
540 | if (connector->encoder == NULL) { | |
541 | i++; | |
542 | continue; | |
543 | } | |
544 | ||
545 | if (mode && crtc) { | |
58367ed6 | 546 | DRM_DEBUG_KMS("desired mode %s set on crtc %d\n", |
40a518d9 | 547 | mode->name, crtc->base.id); |
f453ba04 DA |
548 | crtc->desired_mode = mode; |
549 | connector->encoder->crtc = crtc; | |
a3a0544b | 550 | } else { |
f453ba04 | 551 | connector->encoder->crtc = NULL; |
a3a0544b DA |
552 | connector->encoder = NULL; |
553 | } | |
f453ba04 DA |
554 | i++; |
555 | } | |
556 | ||
557 | kfree(crtcs); | |
558 | kfree(modes); | |
559 | kfree(enabled); | |
560 | } | |
7bec756c JB |
561 | |
562 | /** | |
563 | * drm_encoder_crtc_ok - can a given crtc drive a given encoder? | |
564 | * @encoder: encoder to test | |
565 | * @crtc: crtc to test | |
566 | * | |
567 | * Return false if @encoder can't be driven by @crtc, true otherwise. | |
568 | */ | |
569 | static bool drm_encoder_crtc_ok(struct drm_encoder *encoder, | |
570 | struct drm_crtc *crtc) | |
571 | { | |
572 | struct drm_device *dev; | |
573 | struct drm_crtc *tmp; | |
574 | int crtc_mask = 1; | |
575 | ||
576 | WARN(!crtc, "checking null crtc?"); | |
577 | ||
578 | dev = crtc->dev; | |
579 | ||
580 | list_for_each_entry(tmp, &dev->mode_config.crtc_list, head) { | |
581 | if (tmp == crtc) | |
582 | break; | |
583 | crtc_mask <<= 1; | |
584 | } | |
585 | ||
586 | if (encoder->possible_crtcs & crtc_mask) | |
587 | return true; | |
588 | return false; | |
589 | } | |
590 | ||
591 | /* | |
592 | * Check the CRTC we're going to map each output to vs. its current | |
593 | * CRTC. If they don't match, we have to disable the output and the CRTC | |
594 | * since the driver will have to re-route things. | |
595 | */ | |
596 | static void | |
597 | drm_crtc_prepare_encoders(struct drm_device *dev) | |
598 | { | |
599 | struct drm_encoder_helper_funcs *encoder_funcs; | |
600 | struct drm_encoder *encoder; | |
601 | ||
602 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
603 | encoder_funcs = encoder->helper_private; | |
604 | /* Disable unused encoders */ | |
605 | if (encoder->crtc == NULL) | |
606 | (*encoder_funcs->dpms)(encoder, DRM_MODE_DPMS_OFF); | |
607 | /* Disable encoders whose CRTC is about to change */ | |
608 | if (encoder_funcs->get_crtc && | |
609 | encoder->crtc != (*encoder_funcs->get_crtc)(encoder)) | |
610 | (*encoder_funcs->dpms)(encoder, DRM_MODE_DPMS_OFF); | |
611 | } | |
612 | } | |
613 | ||
f453ba04 DA |
614 | /** |
615 | * drm_crtc_set_mode - set a mode | |
616 | * @crtc: CRTC to program | |
617 | * @mode: mode to use | |
618 | * @x: width of mode | |
619 | * @y: height of mode | |
620 | * | |
621 | * LOCKING: | |
622 | * Caller must hold mode config lock. | |
623 | * | |
624 | * Try to set @mode on @crtc. Give @crtc and its associated connectors a chance | |
625 | * to fixup or reject the mode prior to trying to set it. | |
626 | * | |
627 | * RETURNS: | |
628 | * True if the mode was set successfully, or false otherwise. | |
629 | */ | |
630 | bool drm_crtc_helper_set_mode(struct drm_crtc *crtc, | |
631 | struct drm_display_mode *mode, | |
3c4fdcfb KH |
632 | int x, int y, |
633 | struct drm_framebuffer *old_fb) | |
f453ba04 DA |
634 | { |
635 | struct drm_device *dev = crtc->dev; | |
636 | struct drm_display_mode *adjusted_mode, saved_mode; | |
637 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; | |
638 | struct drm_encoder_helper_funcs *encoder_funcs; | |
639 | int saved_x, saved_y; | |
640 | struct drm_encoder *encoder; | |
641 | bool ret = true; | |
642 | ||
643 | adjusted_mode = drm_mode_duplicate(dev, mode); | |
644 | ||
645 | crtc->enabled = drm_helper_crtc_in_use(crtc); | |
646 | ||
647 | if (!crtc->enabled) | |
648 | return true; | |
649 | ||
650 | saved_mode = crtc->mode; | |
651 | saved_x = crtc->x; | |
652 | saved_y = crtc->y; | |
653 | ||
654 | /* Update crtc values up front so the driver can rely on them for mode | |
655 | * setting. | |
656 | */ | |
657 | crtc->mode = *mode; | |
658 | crtc->x = x; | |
659 | crtc->y = y; | |
660 | ||
f453ba04 DA |
661 | /* Pass our mode to the connectors and the CRTC to give them a chance to |
662 | * adjust it according to limitations or connector properties, and also | |
663 | * a chance to reject the mode entirely. | |
664 | */ | |
665 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
666 | ||
667 | if (encoder->crtc != crtc) | |
668 | continue; | |
669 | encoder_funcs = encoder->helper_private; | |
670 | if (!(ret = encoder_funcs->mode_fixup(encoder, mode, | |
671 | adjusted_mode))) { | |
672 | goto done; | |
673 | } | |
674 | } | |
675 | ||
676 | if (!(ret = crtc_funcs->mode_fixup(crtc, mode, adjusted_mode))) { | |
677 | goto done; | |
678 | } | |
679 | ||
680 | /* Prepare the encoders and CRTCs before setting the mode. */ | |
681 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
682 | ||
683 | if (encoder->crtc != crtc) | |
684 | continue; | |
685 | encoder_funcs = encoder->helper_private; | |
686 | /* Disable the encoders as the first thing we do. */ | |
687 | encoder_funcs->prepare(encoder); | |
688 | } | |
689 | ||
7bec756c JB |
690 | drm_crtc_prepare_encoders(dev); |
691 | ||
f453ba04 DA |
692 | crtc_funcs->prepare(crtc); |
693 | ||
694 | /* Set up the DPLL and any encoders state that needs to adjust or depend | |
695 | * on the DPLL. | |
696 | */ | |
5c3b82e2 CW |
697 | ret = !crtc_funcs->mode_set(crtc, mode, adjusted_mode, x, y, old_fb); |
698 | if (!ret) | |
699 | goto done; | |
f453ba04 DA |
700 | |
701 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
702 | ||
703 | if (encoder->crtc != crtc) | |
704 | continue; | |
705 | ||
ef145877 | 706 | DRM_DEBUG("%s: set mode %s %x\n", drm_get_encoder_name(encoder), |
f453ba04 DA |
707 | mode->name, mode->base.id); |
708 | encoder_funcs = encoder->helper_private; | |
709 | encoder_funcs->mode_set(encoder, mode, adjusted_mode); | |
710 | } | |
711 | ||
712 | /* Now enable the clocks, plane, pipe, and connectors that we set up. */ | |
713 | crtc_funcs->commit(crtc); | |
714 | ||
715 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
716 | ||
717 | if (encoder->crtc != crtc) | |
718 | continue; | |
719 | ||
720 | encoder_funcs = encoder->helper_private; | |
721 | encoder_funcs->commit(encoder); | |
722 | ||
723 | } | |
724 | ||
725 | /* XXX free adjustedmode */ | |
726 | drm_mode_destroy(dev, adjusted_mode); | |
727 | /* FIXME: add subpixel order */ | |
728 | done: | |
729 | if (!ret) { | |
730 | crtc->mode = saved_mode; | |
731 | crtc->x = saved_x; | |
732 | crtc->y = saved_y; | |
733 | } | |
734 | ||
735 | return ret; | |
736 | } | |
737 | EXPORT_SYMBOL(drm_crtc_helper_set_mode); | |
738 | ||
739 | ||
740 | /** | |
741 | * drm_crtc_helper_set_config - set a new config from userspace | |
742 | * @crtc: CRTC to setup | |
743 | * @crtc_info: user provided configuration | |
744 | * @new_mode: new mode to set | |
745 | * @connector_set: set of connectors for the new config | |
746 | * @fb: new framebuffer | |
747 | * | |
748 | * LOCKING: | |
749 | * Caller must hold mode config lock. | |
750 | * | |
751 | * Setup a new configuration, provided by the user in @crtc_info, and enable | |
752 | * it. | |
753 | * | |
754 | * RETURNS: | |
755 | * Zero. (FIXME) | |
756 | */ | |
757 | int drm_crtc_helper_set_config(struct drm_mode_set *set) | |
758 | { | |
759 | struct drm_device *dev; | |
e67aae79 MM |
760 | struct drm_crtc *save_crtcs, *new_crtc, *crtc; |
761 | struct drm_encoder *save_encoders, *new_encoder, *encoder; | |
7bec756c | 762 | struct drm_framebuffer *old_fb = NULL; |
4cb72b17 JB |
763 | bool mode_changed = false; /* if true do a full mode set */ |
764 | bool fb_changed = false; /* if true and !mode_changed just do a flip */ | |
e67aae79 | 765 | struct drm_connector *save_connectors, *connector; |
f453ba04 DA |
766 | int count = 0, ro, fail = 0; |
767 | struct drm_crtc_helper_funcs *crtc_funcs; | |
768 | int ret = 0; | |
769 | ||
58367ed6 | 770 | DRM_DEBUG_KMS("\n"); |
f453ba04 DA |
771 | |
772 | if (!set) | |
773 | return -EINVAL; | |
774 | ||
775 | if (!set->crtc) | |
776 | return -EINVAL; | |
777 | ||
778 | if (!set->crtc->helper_private) | |
779 | return -EINVAL; | |
780 | ||
781 | crtc_funcs = set->crtc->helper_private; | |
782 | ||
58367ed6 ZY |
783 | DRM_DEBUG_KMS("crtc: %p %d fb: %p connectors: %p num_connectors:" |
784 | " %d (x, y) (%i, %i)\n", | |
f453ba04 DA |
785 | set->crtc, set->crtc->base.id, set->fb, set->connectors, |
786 | (int)set->num_connectors, set->x, set->y); | |
787 | ||
788 | dev = set->crtc->dev; | |
789 | ||
e67aae79 MM |
790 | /* Allocate space for the backup of all (non-pointer) crtc, encoder and |
791 | * connector data. */ | |
792 | save_crtcs = kzalloc(dev->mode_config.num_crtc * | |
793 | sizeof(struct drm_crtc), GFP_KERNEL); | |
f453ba04 DA |
794 | if (!save_crtcs) |
795 | return -ENOMEM; | |
796 | ||
e67aae79 MM |
797 | save_encoders = kzalloc(dev->mode_config.num_encoder * |
798 | sizeof(struct drm_encoder), GFP_KERNEL); | |
f453ba04 DA |
799 | if (!save_encoders) { |
800 | kfree(save_crtcs); | |
801 | return -ENOMEM; | |
802 | } | |
803 | ||
e67aae79 MM |
804 | save_connectors = kzalloc(dev->mode_config.num_connector * |
805 | sizeof(struct drm_connector), GFP_KERNEL); | |
806 | if (!save_connectors) { | |
807 | kfree(save_crtcs); | |
808 | kfree(save_encoders); | |
809 | return -ENOMEM; | |
810 | } | |
811 | ||
812 | /* Copy data. Note that driver private data is not affected. | |
813 | * Should anything bad happen only the expected state is | |
814 | * restored, not the drivers personal bookkeeping. | |
815 | */ | |
816 | count = 0; | |
817 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
818 | save_crtcs[count++] = *crtc; | |
819 | } | |
820 | ||
821 | count = 0; | |
822 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
823 | save_encoders[count++] = *encoder; | |
824 | } | |
825 | ||
826 | count = 0; | |
827 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
828 | save_connectors[count++] = *connector; | |
829 | } | |
830 | ||
f453ba04 DA |
831 | /* We should be able to check here if the fb has the same properties |
832 | * and then just flip_or_move it */ | |
833 | if (set->crtc->fb != set->fb) { | |
712531bf | 834 | /* If we have no fb then treat it as a full mode set */ |
7bec756c | 835 | if (set->crtc->fb == NULL) { |
58367ed6 | 836 | DRM_DEBUG_KMS("crtc has no fb, full mode set\n"); |
712531bf | 837 | mode_changed = true; |
4cb72b17 JB |
838 | } else if (set->fb == NULL) { |
839 | mode_changed = true; | |
8dff4742 | 840 | } else |
712531bf | 841 | fb_changed = true; |
f453ba04 DA |
842 | } |
843 | ||
844 | if (set->x != set->crtc->x || set->y != set->crtc->y) | |
712531bf | 845 | fb_changed = true; |
f453ba04 DA |
846 | |
847 | if (set->mode && !drm_mode_equal(set->mode, &set->crtc->mode)) { | |
58367ed6 | 848 | DRM_DEBUG_KMS("modes are different, full mode set\n"); |
f453ba04 DA |
849 | drm_mode_debug_printmodeline(&set->crtc->mode); |
850 | drm_mode_debug_printmodeline(set->mode); | |
712531bf | 851 | mode_changed = true; |
f453ba04 DA |
852 | } |
853 | ||
854 | /* a) traverse passed in connector list and get encoders for them */ | |
855 | count = 0; | |
856 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
857 | struct drm_connector_helper_funcs *connector_funcs = | |
858 | connector->helper_private; | |
f453ba04 DA |
859 | new_encoder = connector->encoder; |
860 | for (ro = 0; ro < set->num_connectors; ro++) { | |
861 | if (set->connectors[ro] == connector) { | |
862 | new_encoder = connector_funcs->best_encoder(connector); | |
863 | /* if we can't get an encoder for a connector | |
864 | we are setting now - then fail */ | |
865 | if (new_encoder == NULL) | |
866 | /* don't break so fail path works correct */ | |
867 | fail = 1; | |
868 | break; | |
869 | } | |
870 | } | |
871 | ||
872 | if (new_encoder != connector->encoder) { | |
58367ed6 | 873 | DRM_DEBUG_KMS("encoder changed, full mode switch\n"); |
712531bf | 874 | mode_changed = true; |
ff846ab7 MM |
875 | /* If the encoder is reused for another connector, then |
876 | * the appropriate crtc will be set later. | |
877 | */ | |
ff6fdbed MM |
878 | if (connector->encoder) |
879 | connector->encoder->crtc = NULL; | |
f453ba04 DA |
880 | connector->encoder = new_encoder; |
881 | } | |
882 | } | |
883 | ||
884 | if (fail) { | |
885 | ret = -EINVAL; | |
e67aae79 | 886 | goto fail; |
f453ba04 DA |
887 | } |
888 | ||
889 | count = 0; | |
890 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
891 | if (!connector->encoder) | |
892 | continue; | |
893 | ||
f453ba04 DA |
894 | if (connector->encoder->crtc == set->crtc) |
895 | new_crtc = NULL; | |
896 | else | |
897 | new_crtc = connector->encoder->crtc; | |
898 | ||
899 | for (ro = 0; ro < set->num_connectors; ro++) { | |
900 | if (set->connectors[ro] == connector) | |
901 | new_crtc = set->crtc; | |
902 | } | |
7bec756c JB |
903 | |
904 | /* Make sure the new CRTC will work with the encoder */ | |
905 | if (new_crtc && | |
906 | !drm_encoder_crtc_ok(connector->encoder, new_crtc)) { | |
907 | ret = -EINVAL; | |
e67aae79 | 908 | goto fail; |
7bec756c | 909 | } |
f453ba04 | 910 | if (new_crtc != connector->encoder->crtc) { |
58367ed6 | 911 | DRM_DEBUG_KMS("crtc changed, full mode switch\n"); |
712531bf | 912 | mode_changed = true; |
f453ba04 DA |
913 | connector->encoder->crtc = new_crtc; |
914 | } | |
58367ed6 | 915 | DRM_DEBUG_KMS("setting connector %d crtc to %p\n", |
7bec756c | 916 | connector->base.id, new_crtc); |
f453ba04 DA |
917 | } |
918 | ||
919 | /* mode_set_base is not a required function */ | |
712531bf JB |
920 | if (fb_changed && !crtc_funcs->mode_set_base) |
921 | mode_changed = true; | |
f453ba04 | 922 | |
712531bf | 923 | if (mode_changed) { |
3c4fdcfb | 924 | old_fb = set->crtc->fb; |
f453ba04 DA |
925 | set->crtc->fb = set->fb; |
926 | set->crtc->enabled = (set->mode != NULL); | |
927 | if (set->mode != NULL) { | |
58367ed6 ZY |
928 | DRM_DEBUG_KMS("attempting to set mode from" |
929 | " userspace\n"); | |
f453ba04 DA |
930 | drm_mode_debug_printmodeline(set->mode); |
931 | if (!drm_crtc_helper_set_mode(set->crtc, set->mode, | |
3c4fdcfb KH |
932 | set->x, set->y, |
933 | old_fb)) { | |
5c3b82e2 CW |
934 | DRM_ERROR("failed to set mode on crtc %p\n", |
935 | set->crtc); | |
f453ba04 | 936 | ret = -EINVAL; |
e67aae79 | 937 | goto fail; |
f453ba04 DA |
938 | } |
939 | /* TODO are these needed? */ | |
940 | set->crtc->desired_x = set->x; | |
941 | set->crtc->desired_y = set->y; | |
942 | set->crtc->desired_mode = set->mode; | |
943 | } | |
944 | drm_helper_disable_unused_functions(dev); | |
712531bf | 945 | } else if (fb_changed) { |
9b1596af BS |
946 | set->crtc->x = set->x; |
947 | set->crtc->y = set->y; | |
948 | ||
3c4fdcfb | 949 | old_fb = set->crtc->fb; |
f453ba04 DA |
950 | if (set->crtc->fb != set->fb) |
951 | set->crtc->fb = set->fb; | |
5c3b82e2 CW |
952 | ret = crtc_funcs->mode_set_base(set->crtc, |
953 | set->x, set->y, old_fb); | |
954 | if (ret != 0) | |
e67aae79 | 955 | goto fail; |
f453ba04 DA |
956 | } |
957 | ||
e67aae79 | 958 | kfree(save_connectors); |
f453ba04 DA |
959 | kfree(save_encoders); |
960 | kfree(save_crtcs); | |
961 | return 0; | |
962 | ||
e67aae79 MM |
963 | fail: |
964 | /* Restore all previous data. */ | |
f453ba04 | 965 | count = 0; |
e67aae79 MM |
966 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
967 | *crtc = save_crtcs[count++]; | |
968 | } | |
e62fb64e | 969 | |
e67aae79 MM |
970 | count = 0; |
971 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
972 | *encoder = save_encoders[count++]; | |
e62fb64e | 973 | } |
e67aae79 | 974 | |
f453ba04 DA |
975 | count = 0; |
976 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
e67aae79 | 977 | *connector = save_connectors[count++]; |
f453ba04 | 978 | } |
e67aae79 MM |
979 | |
980 | kfree(save_connectors); | |
f453ba04 | 981 | kfree(save_encoders); |
e67aae79 | 982 | kfree(save_crtcs); |
f453ba04 DA |
983 | return ret; |
984 | } | |
985 | EXPORT_SYMBOL(drm_crtc_helper_set_config); | |
986 | ||
987 | bool drm_helper_plugged_event(struct drm_device *dev) | |
988 | { | |
58367ed6 | 989 | DRM_DEBUG_KMS("\n"); |
f453ba04 DA |
990 | |
991 | drm_helper_probe_connector_modes(dev, dev->mode_config.max_width, | |
992 | dev->mode_config.max_height); | |
993 | ||
994 | drm_setup_crtcs(dev); | |
995 | ||
996 | /* alert the driver fb layer */ | |
997 | dev->mode_config.funcs->fb_changed(dev); | |
998 | ||
999 | /* FIXME: send hotplug event */ | |
1000 | return true; | |
1001 | } | |
1002 | /** | |
1003 | * drm_initial_config - setup a sane initial connector configuration | |
1004 | * @dev: DRM device | |
f453ba04 DA |
1005 | * |
1006 | * LOCKING: | |
1007 | * Called at init time, must take mode config lock. | |
1008 | * | |
1009 | * Scan the CRTCs and connectors and try to put together an initial setup. | |
1010 | * At the moment, this is a cloned configuration across all heads with | |
1011 | * a new framebuffer object as the backing store. | |
1012 | * | |
1013 | * RETURNS: | |
1014 | * Zero if everything went ok, nonzero otherwise. | |
1015 | */ | |
7a1fb5d0 | 1016 | bool drm_helper_initial_config(struct drm_device *dev) |
f453ba04 | 1017 | { |
40a518d9 | 1018 | int count = 0; |
f453ba04 | 1019 | |
b16d9acb ZY |
1020 | /* disable all the possible outputs/crtcs before entering KMS mode */ |
1021 | drm_helper_disable_unused_functions(dev); | |
1022 | ||
d50ba256 DA |
1023 | drm_fb_helper_parse_command_line(dev); |
1024 | ||
40a518d9 JB |
1025 | count = drm_helper_probe_connector_modes(dev, |
1026 | dev->mode_config.max_width, | |
1027 | dev->mode_config.max_height); | |
1028 | ||
1029 | /* | |
575dc34e | 1030 | * we shouldn't end up with no modes here. |
40a518d9 | 1031 | */ |
70a94d6a DA |
1032 | if (count == 0) |
1033 | printk(KERN_INFO "No connectors reported connected with modes\n"); | |
40a518d9 JB |
1034 | |
1035 | drm_setup_crtcs(dev); | |
1036 | ||
1037 | /* alert the driver fb layer */ | |
1038 | dev->mode_config.funcs->fb_changed(dev); | |
1039 | ||
1040 | return 0; | |
f453ba04 DA |
1041 | } |
1042 | EXPORT_SYMBOL(drm_helper_initial_config); | |
1043 | ||
c9fb15f6 KP |
1044 | static int drm_helper_choose_encoder_dpms(struct drm_encoder *encoder) |
1045 | { | |
1046 | int dpms = DRM_MODE_DPMS_OFF; | |
1047 | struct drm_connector *connector; | |
1048 | struct drm_device *dev = encoder->dev; | |
1049 | ||
1050 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) | |
1051 | if (connector->encoder == encoder) | |
1052 | if (connector->dpms < dpms) | |
1053 | dpms = connector->dpms; | |
1054 | return dpms; | |
1055 | } | |
1056 | ||
1057 | static int drm_helper_choose_crtc_dpms(struct drm_crtc *crtc) | |
1058 | { | |
1059 | int dpms = DRM_MODE_DPMS_OFF; | |
1060 | struct drm_connector *connector; | |
1061 | struct drm_device *dev = crtc->dev; | |
1062 | ||
1063 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) | |
1064 | if (connector->encoder && connector->encoder->crtc == crtc) | |
1065 | if (connector->dpms < dpms) | |
1066 | dpms = connector->dpms; | |
1067 | return dpms; | |
1068 | } | |
1069 | ||
1070 | /** | |
1071 | * drm_helper_connector_dpms | |
1072 | * @connector affected connector | |
1073 | * @mode DPMS mode | |
1074 | * | |
1075 | * Calls the low-level connector DPMS function, then | |
1076 | * calls appropriate encoder and crtc DPMS functions as well | |
1077 | */ | |
1078 | void drm_helper_connector_dpms(struct drm_connector *connector, int mode) | |
1079 | { | |
1080 | struct drm_encoder *encoder = connector->encoder; | |
1081 | struct drm_crtc *crtc = encoder ? encoder->crtc : NULL; | |
1082 | int old_dpms; | |
1083 | ||
1084 | if (mode == connector->dpms) | |
1085 | return; | |
1086 | ||
1087 | old_dpms = connector->dpms; | |
1088 | connector->dpms = mode; | |
1089 | ||
1090 | /* from off to on, do crtc then encoder */ | |
1091 | if (mode < old_dpms) { | |
1092 | if (crtc) { | |
1093 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; | |
1094 | if (crtc_funcs->dpms) | |
1095 | (*crtc_funcs->dpms) (crtc, | |
1096 | drm_helper_choose_crtc_dpms(crtc)); | |
1097 | } | |
1098 | if (encoder) { | |
1099 | struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; | |
1100 | if (encoder_funcs->dpms) | |
1101 | (*encoder_funcs->dpms) (encoder, | |
1102 | drm_helper_choose_encoder_dpms(encoder)); | |
1103 | } | |
1104 | } | |
1105 | ||
1106 | /* from on to off, do encoder then crtc */ | |
1107 | if (mode > old_dpms) { | |
1108 | if (encoder) { | |
1109 | struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; | |
1110 | if (encoder_funcs->dpms) | |
1111 | (*encoder_funcs->dpms) (encoder, | |
1112 | drm_helper_choose_encoder_dpms(encoder)); | |
1113 | } | |
1114 | if (crtc) { | |
1115 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; | |
1116 | if (crtc_funcs->dpms) | |
1117 | (*crtc_funcs->dpms) (crtc, | |
1118 | drm_helper_choose_crtc_dpms(crtc)); | |
1119 | } | |
1120 | } | |
1121 | ||
1122 | return; | |
1123 | } | |
1124 | EXPORT_SYMBOL(drm_helper_connector_dpms); | |
1125 | ||
f453ba04 DA |
1126 | /** |
1127 | * drm_hotplug_stage_two | |
1128 | * @dev DRM device | |
1129 | * @connector hotpluged connector | |
1130 | * | |
1131 | * LOCKING. | |
1132 | * Caller must hold mode config lock, function might grab struct lock. | |
1133 | * | |
1134 | * Stage two of a hotplug. | |
1135 | * | |
1136 | * RETURNS: | |
1137 | * Zero on success, errno on failure. | |
1138 | */ | |
1139 | int drm_helper_hotplug_stage_two(struct drm_device *dev) | |
1140 | { | |
f453ba04 DA |
1141 | drm_helper_plugged_event(dev); |
1142 | ||
1143 | return 0; | |
1144 | } | |
1145 | EXPORT_SYMBOL(drm_helper_hotplug_stage_two); | |
1146 | ||
1147 | int drm_helper_mode_fill_fb_struct(struct drm_framebuffer *fb, | |
1148 | struct drm_mode_fb_cmd *mode_cmd) | |
1149 | { | |
1150 | fb->width = mode_cmd->width; | |
1151 | fb->height = mode_cmd->height; | |
1152 | fb->pitch = mode_cmd->pitch; | |
1153 | fb->bits_per_pixel = mode_cmd->bpp; | |
1154 | fb->depth = mode_cmd->depth; | |
1155 | ||
1156 | return 0; | |
1157 | } | |
1158 | EXPORT_SYMBOL(drm_helper_mode_fill_fb_struct); | |
1159 | ||
1160 | int drm_helper_resume_force_mode(struct drm_device *dev) | |
1161 | { | |
1162 | struct drm_crtc *crtc; | |
89347bb8 DJ |
1163 | struct drm_encoder *encoder; |
1164 | struct drm_encoder_helper_funcs *encoder_funcs; | |
1165 | struct drm_crtc_helper_funcs *crtc_funcs; | |
f453ba04 DA |
1166 | int ret; |
1167 | ||
1168 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
1169 | ||
1170 | if (!crtc->enabled) | |
1171 | continue; | |
1172 | ||
3c4fdcfb KH |
1173 | ret = drm_crtc_helper_set_mode(crtc, &crtc->mode, |
1174 | crtc->x, crtc->y, crtc->fb); | |
f453ba04 DA |
1175 | |
1176 | if (ret == false) | |
1177 | DRM_ERROR("failed to set mode on crtc %p\n", crtc); | |
89347bb8 DJ |
1178 | |
1179 | /* Turn off outputs that were already powered off */ | |
1180 | if (drm_helper_choose_crtc_dpms(crtc)) { | |
1181 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
1182 | ||
1183 | if(encoder->crtc != crtc) | |
1184 | continue; | |
1185 | ||
1186 | encoder_funcs = encoder->helper_private; | |
1187 | if (encoder_funcs->dpms) | |
1188 | (*encoder_funcs->dpms) (encoder, | |
1189 | drm_helper_choose_encoder_dpms(encoder)); | |
1190 | ||
1191 | crtc_funcs = crtc->helper_private; | |
1192 | if (crtc_funcs->dpms) | |
1193 | (*crtc_funcs->dpms) (crtc, | |
1194 | drm_helper_choose_crtc_dpms(crtc)); | |
1195 | } | |
1196 | } | |
f453ba04 | 1197 | } |
af4fcb57 ZY |
1198 | /* disable the unused connectors while restoring the modesetting */ |
1199 | drm_helper_disable_unused_functions(dev); | |
f453ba04 DA |
1200 | return 0; |
1201 | } | |
1202 | EXPORT_SYMBOL(drm_helper_resume_force_mode); |