blob: 9d23f54673d3fa4e34921633fc63537e3c75ad07 [file] [log] [blame]
Dave Airlief453ba02008-11-07 14:05:41 -08001/*
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"
Dave Airlied50ba252009-09-23 14:44:08 +100035#include "drm_fb_helper.h"
Dave Airlief453ba02008-11-07 14:05:41 -080036
yakui_zhao67149772009-04-02 11:52:12 +080037static 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
Dave Airlief453ba02008-11-07 14:05:41 -080057/**
Dave Airlie38651672010-03-30 05:34:13 +000058 * drm_helper_probe_single_connector_modes - get complete set of display modes
Dave Airlief453ba02008-11-07 14:05:41 -080059 * @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
Jesse Barnes40a518d2009-01-12 12:05:32 -080075 *
76 * RETURNS:
77 * Number of modes found on @connector.
Dave Airlief453ba02008-11-07 14:05:41 -080078 */
Jesse Barnes40a518d2009-01-12 12:05:32 -080079int drm_helper_probe_single_connector_modes(struct drm_connector *connector,
80 uint32_t maxX, uint32_t maxY)
Dave Airlief453ba02008-11-07 14:05:41 -080081{
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;
Jesse Barnes40a518d2009-01-12 12:05:32 -080086 int count = 0;
yakui_zhao67149772009-04-02 11:52:12 +080087 int mode_flags = 0;
Dave Airlief453ba02008-11-07 14:05:41 -080088
Zhao Yakui58367ed2009-07-20 13:48:07 +080089 DRM_DEBUG_KMS("%s\n", drm_get_connector_name(connector));
Dave Airlief453ba02008-11-07 14:05:41 -080090 /* set all modes to the unverified state */
91 list_for_each_entry_safe(mode, t, &connector->modes, head)
92 mode->status = MODE_UNVERIFIED;
93
Dave Airlied50ba252009-09-23 14:44:08 +100094 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);
Dave Airlief453ba02008-11-07 14:05:41 -0800103
104 if (connector->status == connector_status_disconnected) {
Zhao Yakui58367ed2009-07-20 13:48:07 +0800105 DRM_DEBUG_KMS("%s is disconnected\n",
Dave Airlief453ba02008-11-07 14:05:41 -0800106 drm_get_connector_name(connector));
Zhao Yakui72539832010-03-04 08:25:55 +0000107 drm_mode_connector_update_edid_property(connector, NULL);
Adam Jackson620f3782009-09-08 11:51:46 +1000108 goto prune;
Dave Airlief453ba02008-11-07 14:05:41 -0800109 }
110
Jesse Barnes40a518d2009-01-12 12:05:32 -0800111 count = (*connector_funcs->get_modes)(connector);
ykzhao50fe4cf2009-09-03 14:30:04 +0800112 if (!count) {
Adam Jackson9632b412009-11-23 14:23:07 -0500113 count = drm_add_modes_noedid(connector, 1024, 768);
ykzhao50fe4cf2009-09-03 14:30:04 +0800114 if (!count)
115 return 0;
116 }
Dave Airlief453ba02008-11-07 14:05:41 -0800117
Jesse Barnes40a518d2009-01-12 12:05:32 -0800118 drm_mode_connector_list_update(connector);
Dave Airlief453ba02008-11-07 14:05:41 -0800119
120 if (maxX && maxY)
121 drm_mode_validate_size(dev, &connector->modes, maxX,
122 maxY, 0);
yakui_zhao67149772009-04-02 11:52:12 +0800123
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
Dave Airlief453ba02008-11-07 14:05:41 -0800130 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
Adam Jackson620f3782009-09-08 11:51:46 +1000136prune:
Dave Airlief453ba02008-11-07 14:05:41 -0800137 drm_mode_prune_invalid(dev, &connector->modes, true);
138
Jesse Barnes40a518d2009-01-12 12:05:32 -0800139 if (list_empty(&connector->modes))
140 return 0;
Dave Airlief453ba02008-11-07 14:05:41 -0800141
142 drm_mode_sort(&connector->modes);
143
Zhao Yakui58367ed2009-07-20 13:48:07 +0800144 DRM_DEBUG_KMS("Probed modes for %s\n",
145 drm_get_connector_name(connector));
Dave Airlief453ba02008-11-07 14:05:41 -0800146 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 }
Jesse Barnes40a518d2009-01-12 12:05:32 -0800152
153 return count;
Dave Airlief453ba02008-11-07 14:05:41 -0800154}
155EXPORT_SYMBOL(drm_helper_probe_single_connector_modes);
156
Dave Airlief453ba02008-11-07 14:05:41 -0800157/**
Keith Packardc9fb15f2009-05-30 20:42:28 -0700158 * drm_helper_encoder_in_use - check if a given encoder is in use
159 * @encoder: encoder to check
160 *
161 * LOCKING:
162 * Caller must hold mode config lock.
163 *
164 * Walk @encoders's DRM device's mode_config and see if it's in use.
165 *
166 * RETURNS:
167 * True if @encoder is part of the mode_config, false otherwise.
168 */
169bool drm_helper_encoder_in_use(struct drm_encoder *encoder)
170{
171 struct drm_connector *connector;
172 struct drm_device *dev = encoder->dev;
173 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
174 if (connector->encoder == encoder)
175 return true;
176 return false;
177}
178EXPORT_SYMBOL(drm_helper_encoder_in_use);
179
180/**
Dave Airlief453ba02008-11-07 14:05:41 -0800181 * drm_helper_crtc_in_use - check if a given CRTC is in a mode_config
182 * @crtc: CRTC to check
183 *
184 * LOCKING:
185 * Caller must hold mode config lock.
186 *
187 * Walk @crtc's DRM device's mode_config and see if it's in use.
188 *
189 * RETURNS:
190 * True if @crtc is part of the mode_config, false otherwise.
191 */
192bool drm_helper_crtc_in_use(struct drm_crtc *crtc)
193{
194 struct drm_encoder *encoder;
195 struct drm_device *dev = crtc->dev;
196 /* FIXME: Locking around list access? */
197 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
Keith Packardc9fb15f2009-05-30 20:42:28 -0700198 if (encoder->crtc == crtc && drm_helper_encoder_in_use(encoder))
Dave Airlief453ba02008-11-07 14:05:41 -0800199 return true;
200 return false;
201}
202EXPORT_SYMBOL(drm_helper_crtc_in_use);
203
204/**
David John89347bb2009-12-31 12:00:46 +0530205 * drm_helper_disable_unused_functions - disable unused objects
Dave Airlief453ba02008-11-07 14:05:41 -0800206 * @dev: DRM device
207 *
208 * LOCKING:
209 * Caller must hold mode config lock.
210 *
211 * If an connector or CRTC isn't part of @dev's mode_config, it can be disabled
212 * by calling its dpms function, which should power it off.
213 */
214void drm_helper_disable_unused_functions(struct drm_device *dev)
215{
216 struct drm_encoder *encoder;
Dave Airliea3a05442009-08-31 15:16:30 +1000217 struct drm_connector *connector;
Dave Airlief453ba02008-11-07 14:05:41 -0800218 struct drm_encoder_helper_funcs *encoder_funcs;
219 struct drm_crtc *crtc;
220
Dave Airliea3a05442009-08-31 15:16:30 +1000221 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
222 if (!connector->encoder)
223 continue;
224 if (connector->status == connector_status_disconnected)
225 connector->encoder = NULL;
226 }
227
Dave Airlief453ba02008-11-07 14:05:41 -0800228 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
229 encoder_funcs = encoder->helper_private;
Dave Airliea3a05442009-08-31 15:16:30 +1000230 if (!drm_helper_encoder_in_use(encoder)) {
231 if (encoder_funcs->disable)
232 (*encoder_funcs->disable)(encoder);
233 else
234 (*encoder_funcs->dpms)(encoder, DRM_MODE_DPMS_OFF);
Dave Airlie9c552dd2009-09-02 14:00:11 +1000235 /* disconnector encoder from any connector */
236 encoder->crtc = NULL;
Dave Airliea3a05442009-08-31 15:16:30 +1000237 }
Dave Airlief453ba02008-11-07 14:05:41 -0800238 }
239
240 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
241 struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
242 crtc->enabled = drm_helper_crtc_in_use(crtc);
243 if (!crtc->enabled) {
244 crtc_funcs->dpms(crtc, DRM_MODE_DPMS_OFF);
245 crtc->fb = NULL;
246 }
247 }
248}
249EXPORT_SYMBOL(drm_helper_disable_unused_functions);
250
Jesse Barnes7bec7562009-02-23 16:09:34 -0800251/**
252 * drm_encoder_crtc_ok - can a given crtc drive a given encoder?
253 * @encoder: encoder to test
254 * @crtc: crtc to test
255 *
256 * Return false if @encoder can't be driven by @crtc, true otherwise.
257 */
258static bool drm_encoder_crtc_ok(struct drm_encoder *encoder,
259 struct drm_crtc *crtc)
260{
261 struct drm_device *dev;
262 struct drm_crtc *tmp;
263 int crtc_mask = 1;
264
265 WARN(!crtc, "checking null crtc?");
266
267 dev = crtc->dev;
268
269 list_for_each_entry(tmp, &dev->mode_config.crtc_list, head) {
270 if (tmp == crtc)
271 break;
272 crtc_mask <<= 1;
273 }
274
275 if (encoder->possible_crtcs & crtc_mask)
276 return true;
277 return false;
278}
279
280/*
281 * Check the CRTC we're going to map each output to vs. its current
282 * CRTC. If they don't match, we have to disable the output and the CRTC
283 * since the driver will have to re-route things.
284 */
285static void
286drm_crtc_prepare_encoders(struct drm_device *dev)
287{
288 struct drm_encoder_helper_funcs *encoder_funcs;
289 struct drm_encoder *encoder;
290
291 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
292 encoder_funcs = encoder->helper_private;
293 /* Disable unused encoders */
294 if (encoder->crtc == NULL)
295 (*encoder_funcs->dpms)(encoder, DRM_MODE_DPMS_OFF);
296 /* Disable encoders whose CRTC is about to change */
297 if (encoder_funcs->get_crtc &&
298 encoder->crtc != (*encoder_funcs->get_crtc)(encoder))
299 (*encoder_funcs->dpms)(encoder, DRM_MODE_DPMS_OFF);
300 }
301}
302
Dave Airlief453ba02008-11-07 14:05:41 -0800303/**
304 * drm_crtc_set_mode - set a mode
305 * @crtc: CRTC to program
306 * @mode: mode to use
307 * @x: width of mode
308 * @y: height of mode
309 *
310 * LOCKING:
311 * Caller must hold mode config lock.
312 *
313 * Try to set @mode on @crtc. Give @crtc and its associated connectors a chance
314 * to fixup or reject the mode prior to trying to set it.
315 *
316 * RETURNS:
317 * True if the mode was set successfully, or false otherwise.
318 */
319bool drm_crtc_helper_set_mode(struct drm_crtc *crtc,
320 struct drm_display_mode *mode,
Kristian Høgsberg3c4fdcf2008-12-17 22:14:46 -0500321 int x, int y,
322 struct drm_framebuffer *old_fb)
Dave Airlief453ba02008-11-07 14:05:41 -0800323{
324 struct drm_device *dev = crtc->dev;
325 struct drm_display_mode *adjusted_mode, saved_mode;
326 struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
327 struct drm_encoder_helper_funcs *encoder_funcs;
328 int saved_x, saved_y;
329 struct drm_encoder *encoder;
330 bool ret = true;
331
332 adjusted_mode = drm_mode_duplicate(dev, mode);
333
334 crtc->enabled = drm_helper_crtc_in_use(crtc);
335
336 if (!crtc->enabled)
337 return true;
338
339 saved_mode = crtc->mode;
340 saved_x = crtc->x;
341 saved_y = crtc->y;
342
343 /* Update crtc values up front so the driver can rely on them for mode
344 * setting.
345 */
346 crtc->mode = *mode;
347 crtc->x = x;
348 crtc->y = y;
349
Dave Airlief453ba02008-11-07 14:05:41 -0800350 /* Pass our mode to the connectors and the CRTC to give them a chance to
351 * adjust it according to limitations or connector properties, and also
352 * a chance to reject the mode entirely.
353 */
354 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
355
356 if (encoder->crtc != crtc)
357 continue;
358 encoder_funcs = encoder->helper_private;
359 if (!(ret = encoder_funcs->mode_fixup(encoder, mode,
360 adjusted_mode))) {
361 goto done;
362 }
363 }
364
365 if (!(ret = crtc_funcs->mode_fixup(crtc, mode, adjusted_mode))) {
366 goto done;
367 }
368
369 /* Prepare the encoders and CRTCs before setting the mode. */
370 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
371
372 if (encoder->crtc != crtc)
373 continue;
374 encoder_funcs = encoder->helper_private;
375 /* Disable the encoders as the first thing we do. */
376 encoder_funcs->prepare(encoder);
377 }
378
Jesse Barnes7bec7562009-02-23 16:09:34 -0800379 drm_crtc_prepare_encoders(dev);
380
Dave Airlief453ba02008-11-07 14:05:41 -0800381 crtc_funcs->prepare(crtc);
382
383 /* Set up the DPLL and any encoders state that needs to adjust or depend
384 * on the DPLL.
385 */
Chris Wilson5c3b82e2009-02-11 13:25:09 +0000386 ret = !crtc_funcs->mode_set(crtc, mode, adjusted_mode, x, y, old_fb);
387 if (!ret)
388 goto done;
Dave Airlief453ba02008-11-07 14:05:41 -0800389
390 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
391
392 if (encoder->crtc != crtc)
393 continue;
394
Dave Youngef145872010-01-13 13:38:59 +0800395 DRM_DEBUG("%s: set mode %s %x\n", drm_get_encoder_name(encoder),
Dave Airlief453ba02008-11-07 14:05:41 -0800396 mode->name, mode->base.id);
397 encoder_funcs = encoder->helper_private;
398 encoder_funcs->mode_set(encoder, mode, adjusted_mode);
399 }
400
401 /* Now enable the clocks, plane, pipe, and connectors that we set up. */
402 crtc_funcs->commit(crtc);
403
404 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
405
406 if (encoder->crtc != crtc)
407 continue;
408
409 encoder_funcs = encoder->helper_private;
410 encoder_funcs->commit(encoder);
411
412 }
413
414 /* XXX free adjustedmode */
415 drm_mode_destroy(dev, adjusted_mode);
416 /* FIXME: add subpixel order */
417done:
418 if (!ret) {
419 crtc->mode = saved_mode;
420 crtc->x = saved_x;
421 crtc->y = saved_y;
422 }
423
424 return ret;
425}
426EXPORT_SYMBOL(drm_crtc_helper_set_mode);
427
428
429/**
430 * drm_crtc_helper_set_config - set a new config from userspace
431 * @crtc: CRTC to setup
432 * @crtc_info: user provided configuration
433 * @new_mode: new mode to set
434 * @connector_set: set of connectors for the new config
435 * @fb: new framebuffer
436 *
437 * LOCKING:
438 * Caller must hold mode config lock.
439 *
440 * Setup a new configuration, provided by the user in @crtc_info, and enable
441 * it.
442 *
443 * RETURNS:
444 * Zero. (FIXME)
445 */
446int drm_crtc_helper_set_config(struct drm_mode_set *set)
447{
448 struct drm_device *dev;
Maarten Maathuise67aae72009-08-27 10:18:29 +0200449 struct drm_crtc *save_crtcs, *new_crtc, *crtc;
450 struct drm_encoder *save_encoders, *new_encoder, *encoder;
Jesse Barnes7bec7562009-02-23 16:09:34 -0800451 struct drm_framebuffer *old_fb = NULL;
Jakob Bornecrantz4cb72b12009-08-03 13:43:59 +0100452 bool mode_changed = false; /* if true do a full mode set */
453 bool fb_changed = false; /* if true and !mode_changed just do a flip */
Maarten Maathuise67aae72009-08-27 10:18:29 +0200454 struct drm_connector *save_connectors, *connector;
Dave Airlief453ba02008-11-07 14:05:41 -0800455 int count = 0, ro, fail = 0;
456 struct drm_crtc_helper_funcs *crtc_funcs;
457 int ret = 0;
458
Zhao Yakui58367ed2009-07-20 13:48:07 +0800459 DRM_DEBUG_KMS("\n");
Dave Airlief453ba02008-11-07 14:05:41 -0800460
461 if (!set)
462 return -EINVAL;
463
464 if (!set->crtc)
465 return -EINVAL;
466
467 if (!set->crtc->helper_private)
468 return -EINVAL;
469
470 crtc_funcs = set->crtc->helper_private;
471
Zhao Yakui58367ed2009-07-20 13:48:07 +0800472 DRM_DEBUG_KMS("crtc: %p %d fb: %p connectors: %p num_connectors:"
473 " %d (x, y) (%i, %i)\n",
Dave Airlief453ba02008-11-07 14:05:41 -0800474 set->crtc, set->crtc->base.id, set->fb, set->connectors,
475 (int)set->num_connectors, set->x, set->y);
476
477 dev = set->crtc->dev;
478
Maarten Maathuise67aae72009-08-27 10:18:29 +0200479 /* Allocate space for the backup of all (non-pointer) crtc, encoder and
480 * connector data. */
481 save_crtcs = kzalloc(dev->mode_config.num_crtc *
482 sizeof(struct drm_crtc), GFP_KERNEL);
Dave Airlief453ba02008-11-07 14:05:41 -0800483 if (!save_crtcs)
484 return -ENOMEM;
485
Maarten Maathuise67aae72009-08-27 10:18:29 +0200486 save_encoders = kzalloc(dev->mode_config.num_encoder *
487 sizeof(struct drm_encoder), GFP_KERNEL);
Dave Airlief453ba02008-11-07 14:05:41 -0800488 if (!save_encoders) {
489 kfree(save_crtcs);
490 return -ENOMEM;
491 }
492
Maarten Maathuise67aae72009-08-27 10:18:29 +0200493 save_connectors = kzalloc(dev->mode_config.num_connector *
494 sizeof(struct drm_connector), GFP_KERNEL);
495 if (!save_connectors) {
496 kfree(save_crtcs);
497 kfree(save_encoders);
498 return -ENOMEM;
499 }
500
501 /* Copy data. Note that driver private data is not affected.
502 * Should anything bad happen only the expected state is
503 * restored, not the drivers personal bookkeeping.
504 */
505 count = 0;
506 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
507 save_crtcs[count++] = *crtc;
508 }
509
510 count = 0;
511 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
512 save_encoders[count++] = *encoder;
513 }
514
515 count = 0;
516 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
517 save_connectors[count++] = *connector;
518 }
519
Dave Airlief453ba02008-11-07 14:05:41 -0800520 /* We should be able to check here if the fb has the same properties
521 * and then just flip_or_move it */
522 if (set->crtc->fb != set->fb) {
Jesse Barnes712531b2009-01-09 13:56:14 -0800523 /* If we have no fb then treat it as a full mode set */
Jesse Barnes7bec7562009-02-23 16:09:34 -0800524 if (set->crtc->fb == NULL) {
Zhao Yakui58367ed2009-07-20 13:48:07 +0800525 DRM_DEBUG_KMS("crtc has no fb, full mode set\n");
Jesse Barnes712531b2009-01-09 13:56:14 -0800526 mode_changed = true;
Jakob Bornecrantz4cb72b12009-08-03 13:43:59 +0100527 } else if (set->fb == NULL) {
528 mode_changed = true;
Dave Airlie8dff4742010-02-11 14:28:58 +1000529 } else
Jesse Barnes712531b2009-01-09 13:56:14 -0800530 fb_changed = true;
Dave Airlief453ba02008-11-07 14:05:41 -0800531 }
532
533 if (set->x != set->crtc->x || set->y != set->crtc->y)
Jesse Barnes712531b2009-01-09 13:56:14 -0800534 fb_changed = true;
Dave Airlief453ba02008-11-07 14:05:41 -0800535
536 if (set->mode && !drm_mode_equal(set->mode, &set->crtc->mode)) {
Zhao Yakui58367ed2009-07-20 13:48:07 +0800537 DRM_DEBUG_KMS("modes are different, full mode set\n");
Dave Airlief453ba02008-11-07 14:05:41 -0800538 drm_mode_debug_printmodeline(&set->crtc->mode);
539 drm_mode_debug_printmodeline(set->mode);
Jesse Barnes712531b2009-01-09 13:56:14 -0800540 mode_changed = true;
Dave Airlief453ba02008-11-07 14:05:41 -0800541 }
542
543 /* a) traverse passed in connector list and get encoders for them */
544 count = 0;
545 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
546 struct drm_connector_helper_funcs *connector_funcs =
547 connector->helper_private;
Dave Airlief453ba02008-11-07 14:05:41 -0800548 new_encoder = connector->encoder;
549 for (ro = 0; ro < set->num_connectors; ro++) {
550 if (set->connectors[ro] == connector) {
551 new_encoder = connector_funcs->best_encoder(connector);
552 /* if we can't get an encoder for a connector
553 we are setting now - then fail */
554 if (new_encoder == NULL)
555 /* don't break so fail path works correct */
556 fail = 1;
557 break;
558 }
559 }
560
561 if (new_encoder != connector->encoder) {
Zhao Yakui58367ed2009-07-20 13:48:07 +0800562 DRM_DEBUG_KMS("encoder changed, full mode switch\n");
Jesse Barnes712531b2009-01-09 13:56:14 -0800563 mode_changed = true;
Maarten Maathuisff846ab2009-08-19 00:56:45 +0200564 /* If the encoder is reused for another connector, then
565 * the appropriate crtc will be set later.
566 */
Maarten Maathuisff6fdbe2009-09-01 03:39:04 +0200567 if (connector->encoder)
568 connector->encoder->crtc = NULL;
Dave Airlief453ba02008-11-07 14:05:41 -0800569 connector->encoder = new_encoder;
570 }
571 }
572
573 if (fail) {
574 ret = -EINVAL;
Maarten Maathuise67aae72009-08-27 10:18:29 +0200575 goto fail;
Dave Airlief453ba02008-11-07 14:05:41 -0800576 }
577
578 count = 0;
579 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
580 if (!connector->encoder)
581 continue;
582
Dave Airlief453ba02008-11-07 14:05:41 -0800583 if (connector->encoder->crtc == set->crtc)
584 new_crtc = NULL;
585 else
586 new_crtc = connector->encoder->crtc;
587
588 for (ro = 0; ro < set->num_connectors; ro++) {
589 if (set->connectors[ro] == connector)
590 new_crtc = set->crtc;
591 }
Jesse Barnes7bec7562009-02-23 16:09:34 -0800592
593 /* Make sure the new CRTC will work with the encoder */
594 if (new_crtc &&
595 !drm_encoder_crtc_ok(connector->encoder, new_crtc)) {
596 ret = -EINVAL;
Maarten Maathuise67aae72009-08-27 10:18:29 +0200597 goto fail;
Jesse Barnes7bec7562009-02-23 16:09:34 -0800598 }
Dave Airlief453ba02008-11-07 14:05:41 -0800599 if (new_crtc != connector->encoder->crtc) {
Zhao Yakui58367ed2009-07-20 13:48:07 +0800600 DRM_DEBUG_KMS("crtc changed, full mode switch\n");
Jesse Barnes712531b2009-01-09 13:56:14 -0800601 mode_changed = true;
Dave Airlief453ba02008-11-07 14:05:41 -0800602 connector->encoder->crtc = new_crtc;
603 }
Zhao Yakui58367ed2009-07-20 13:48:07 +0800604 DRM_DEBUG_KMS("setting connector %d crtc to %p\n",
Jesse Barnes7bec7562009-02-23 16:09:34 -0800605 connector->base.id, new_crtc);
Dave Airlief453ba02008-11-07 14:05:41 -0800606 }
607
608 /* mode_set_base is not a required function */
Jesse Barnes712531b2009-01-09 13:56:14 -0800609 if (fb_changed && !crtc_funcs->mode_set_base)
610 mode_changed = true;
Dave Airlief453ba02008-11-07 14:05:41 -0800611
Jesse Barnes712531b2009-01-09 13:56:14 -0800612 if (mode_changed) {
Kristian Høgsberg3c4fdcf2008-12-17 22:14:46 -0500613 old_fb = set->crtc->fb;
Dave Airlief453ba02008-11-07 14:05:41 -0800614 set->crtc->fb = set->fb;
615 set->crtc->enabled = (set->mode != NULL);
616 if (set->mode != NULL) {
Zhao Yakui58367ed2009-07-20 13:48:07 +0800617 DRM_DEBUG_KMS("attempting to set mode from"
618 " userspace\n");
Dave Airlief453ba02008-11-07 14:05:41 -0800619 drm_mode_debug_printmodeline(set->mode);
620 if (!drm_crtc_helper_set_mode(set->crtc, set->mode,
Kristian Høgsberg3c4fdcf2008-12-17 22:14:46 -0500621 set->x, set->y,
622 old_fb)) {
Chris Wilson5c3b82e2009-02-11 13:25:09 +0000623 DRM_ERROR("failed to set mode on crtc %p\n",
624 set->crtc);
Dave Airlief453ba02008-11-07 14:05:41 -0800625 ret = -EINVAL;
Maarten Maathuise67aae72009-08-27 10:18:29 +0200626 goto fail;
Dave Airlief453ba02008-11-07 14:05:41 -0800627 }
628 /* TODO are these needed? */
629 set->crtc->desired_x = set->x;
630 set->crtc->desired_y = set->y;
631 set->crtc->desired_mode = set->mode;
632 }
633 drm_helper_disable_unused_functions(dev);
Jesse Barnes712531b2009-01-09 13:56:14 -0800634 } else if (fb_changed) {
Ben Skeggs9b1596a2009-09-18 10:43:52 +1000635 set->crtc->x = set->x;
636 set->crtc->y = set->y;
637
Kristian Høgsberg3c4fdcf2008-12-17 22:14:46 -0500638 old_fb = set->crtc->fb;
Dave Airlief453ba02008-11-07 14:05:41 -0800639 if (set->crtc->fb != set->fb)
640 set->crtc->fb = set->fb;
Chris Wilson5c3b82e2009-02-11 13:25:09 +0000641 ret = crtc_funcs->mode_set_base(set->crtc,
642 set->x, set->y, old_fb);
643 if (ret != 0)
Maarten Maathuise67aae72009-08-27 10:18:29 +0200644 goto fail;
Dave Airlief453ba02008-11-07 14:05:41 -0800645 }
646
Maarten Maathuise67aae72009-08-27 10:18:29 +0200647 kfree(save_connectors);
Dave Airlief453ba02008-11-07 14:05:41 -0800648 kfree(save_encoders);
649 kfree(save_crtcs);
650 return 0;
651
Maarten Maathuise67aae72009-08-27 10:18:29 +0200652fail:
653 /* Restore all previous data. */
Dave Airlief453ba02008-11-07 14:05:41 -0800654 count = 0;
Maarten Maathuise67aae72009-08-27 10:18:29 +0200655 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
656 *crtc = save_crtcs[count++];
657 }
Chris Wilsone62fb642009-02-11 16:39:21 +0000658
Maarten Maathuise67aae72009-08-27 10:18:29 +0200659 count = 0;
660 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
661 *encoder = save_encoders[count++];
Chris Wilsone62fb642009-02-11 16:39:21 +0000662 }
Maarten Maathuise67aae72009-08-27 10:18:29 +0200663
Dave Airlief453ba02008-11-07 14:05:41 -0800664 count = 0;
665 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
Maarten Maathuise67aae72009-08-27 10:18:29 +0200666 *connector = save_connectors[count++];
Dave Airlief453ba02008-11-07 14:05:41 -0800667 }
Maarten Maathuise67aae72009-08-27 10:18:29 +0200668
669 kfree(save_connectors);
Dave Airlief453ba02008-11-07 14:05:41 -0800670 kfree(save_encoders);
Maarten Maathuise67aae72009-08-27 10:18:29 +0200671 kfree(save_crtcs);
Dave Airlief453ba02008-11-07 14:05:41 -0800672 return ret;
673}
674EXPORT_SYMBOL(drm_crtc_helper_set_config);
675
Keith Packardc9fb15f2009-05-30 20:42:28 -0700676static int drm_helper_choose_encoder_dpms(struct drm_encoder *encoder)
677{
678 int dpms = DRM_MODE_DPMS_OFF;
679 struct drm_connector *connector;
680 struct drm_device *dev = encoder->dev;
681
682 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
683 if (connector->encoder == encoder)
684 if (connector->dpms < dpms)
685 dpms = connector->dpms;
686 return dpms;
687}
688
689static int drm_helper_choose_crtc_dpms(struct drm_crtc *crtc)
690{
691 int dpms = DRM_MODE_DPMS_OFF;
692 struct drm_connector *connector;
693 struct drm_device *dev = crtc->dev;
694
695 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
696 if (connector->encoder && connector->encoder->crtc == crtc)
697 if (connector->dpms < dpms)
698 dpms = connector->dpms;
699 return dpms;
700}
701
702/**
703 * drm_helper_connector_dpms
704 * @connector affected connector
705 * @mode DPMS mode
706 *
707 * Calls the low-level connector DPMS function, then
708 * calls appropriate encoder and crtc DPMS functions as well
709 */
710void drm_helper_connector_dpms(struct drm_connector *connector, int mode)
711{
712 struct drm_encoder *encoder = connector->encoder;
713 struct drm_crtc *crtc = encoder ? encoder->crtc : NULL;
714 int old_dpms;
715
716 if (mode == connector->dpms)
717 return;
718
719 old_dpms = connector->dpms;
720 connector->dpms = mode;
721
722 /* from off to on, do crtc then encoder */
723 if (mode < old_dpms) {
724 if (crtc) {
725 struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
726 if (crtc_funcs->dpms)
727 (*crtc_funcs->dpms) (crtc,
728 drm_helper_choose_crtc_dpms(crtc));
729 }
730 if (encoder) {
731 struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private;
732 if (encoder_funcs->dpms)
733 (*encoder_funcs->dpms) (encoder,
734 drm_helper_choose_encoder_dpms(encoder));
735 }
736 }
737
738 /* from on to off, do encoder then crtc */
739 if (mode > old_dpms) {
740 if (encoder) {
741 struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private;
742 if (encoder_funcs->dpms)
743 (*encoder_funcs->dpms) (encoder,
744 drm_helper_choose_encoder_dpms(encoder));
745 }
746 if (crtc) {
747 struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
748 if (crtc_funcs->dpms)
749 (*crtc_funcs->dpms) (crtc,
750 drm_helper_choose_crtc_dpms(crtc));
751 }
752 }
753
754 return;
755}
756EXPORT_SYMBOL(drm_helper_connector_dpms);
757
Dave Airlief453ba02008-11-07 14:05:41 -0800758int drm_helper_mode_fill_fb_struct(struct drm_framebuffer *fb,
759 struct drm_mode_fb_cmd *mode_cmd)
760{
761 fb->width = mode_cmd->width;
762 fb->height = mode_cmd->height;
763 fb->pitch = mode_cmd->pitch;
764 fb->bits_per_pixel = mode_cmd->bpp;
765 fb->depth = mode_cmd->depth;
766
767 return 0;
768}
769EXPORT_SYMBOL(drm_helper_mode_fill_fb_struct);
770
771int drm_helper_resume_force_mode(struct drm_device *dev)
772{
773 struct drm_crtc *crtc;
David John89347bb2009-12-31 12:00:46 +0530774 struct drm_encoder *encoder;
775 struct drm_encoder_helper_funcs *encoder_funcs;
776 struct drm_crtc_helper_funcs *crtc_funcs;
Dave Airlief453ba02008-11-07 14:05:41 -0800777 int ret;
778
779 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
780
781 if (!crtc->enabled)
782 continue;
783
Kristian Høgsberg3c4fdcf2008-12-17 22:14:46 -0500784 ret = drm_crtc_helper_set_mode(crtc, &crtc->mode,
785 crtc->x, crtc->y, crtc->fb);
Dave Airlief453ba02008-11-07 14:05:41 -0800786
787 if (ret == false)
788 DRM_ERROR("failed to set mode on crtc %p\n", crtc);
David John89347bb2009-12-31 12:00:46 +0530789
790 /* Turn off outputs that were already powered off */
791 if (drm_helper_choose_crtc_dpms(crtc)) {
792 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
793
794 if(encoder->crtc != crtc)
795 continue;
796
797 encoder_funcs = encoder->helper_private;
798 if (encoder_funcs->dpms)
799 (*encoder_funcs->dpms) (encoder,
800 drm_helper_choose_encoder_dpms(encoder));
801
802 crtc_funcs = crtc->helper_private;
803 if (crtc_funcs->dpms)
804 (*crtc_funcs->dpms) (crtc,
805 drm_helper_choose_crtc_dpms(crtc));
806 }
807 }
Dave Airlief453ba02008-11-07 14:05:41 -0800808 }
Zhao Yakuiaf4fcb52009-07-08 14:13:13 +0800809 /* disable the unused connectors while restoring the modesetting */
810 drm_helper_disable_unused_functions(dev);
Dave Airlief453ba02008-11-07 14:05:41 -0800811 return 0;
812}
813EXPORT_SYMBOL(drm_helper_resume_force_mode);