]>
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 | ||
2d1a8a48 | 32 | #include <linux/export.h> |
0603ba14 | 33 | #include <linux/moduleparam.h> |
2d1a8a48 | 34 | |
f453ba04 DA |
35 | #include "drmP.h" |
36 | #include "drm_crtc.h" | |
37 | #include "drm_crtc_helper.h" | |
d50ba256 | 38 | #include "drm_fb_helper.h" |
f453ba04 | 39 | |
e58f637b CW |
40 | static bool drm_kms_helper_poll = true; |
41 | module_param_named(poll, drm_kms_helper_poll, bool, 0600); | |
42 | ||
6714977b | 43 | static void drm_mode_validate_flag(struct drm_connector *connector, |
44 | int flags) | |
45 | { | |
46 | struct drm_display_mode *mode, *t; | |
47 | ||
48 | if (flags == (DRM_MODE_FLAG_DBLSCAN | DRM_MODE_FLAG_INTERLACE)) | |
49 | return; | |
50 | ||
51 | list_for_each_entry_safe(mode, t, &connector->modes, head) { | |
52 | if ((mode->flags & DRM_MODE_FLAG_INTERLACE) && | |
53 | !(flags & DRM_MODE_FLAG_INTERLACE)) | |
54 | mode->status = MODE_NO_INTERLACE; | |
55 | if ((mode->flags & DRM_MODE_FLAG_DBLSCAN) && | |
56 | !(flags & DRM_MODE_FLAG_DBLSCAN)) | |
57 | mode->status = MODE_NO_DBLESCAN; | |
58 | } | |
59 | ||
60 | return; | |
61 | } | |
62 | ||
f453ba04 | 63 | /** |
38651674 | 64 | * drm_helper_probe_single_connector_modes - get complete set of display modes |
f453ba04 DA |
65 | * @dev: DRM device |
66 | * @maxX: max width for modes | |
67 | * @maxY: max height for modes | |
68 | * | |
69 | * LOCKING: | |
70 | * Caller must hold mode config lock. | |
71 | * | |
72 | * Based on @dev's mode_config layout, scan all the connectors and try to detect | |
73 | * modes on them. Modes will first be added to the connector's probed_modes | |
74 | * list, then culled (based on validity and the @maxX, @maxY parameters) and | |
75 | * put into the normal modes list. | |
76 | * | |
77 | * Intended to be used either at bootup time or when major configuration | |
78 | * changes have occurred. | |
79 | * | |
80 | * FIXME: take into account monitor limits | |
40a518d9 JB |
81 | * |
82 | * RETURNS: | |
83 | * Number of modes found on @connector. | |
f453ba04 | 84 | */ |
40a518d9 JB |
85 | int drm_helper_probe_single_connector_modes(struct drm_connector *connector, |
86 | uint32_t maxX, uint32_t maxY) | |
f453ba04 DA |
87 | { |
88 | struct drm_device *dev = connector->dev; | |
89 | struct drm_display_mode *mode, *t; | |
90 | struct drm_connector_helper_funcs *connector_funcs = | |
91 | connector->helper_private; | |
40a518d9 | 92 | int count = 0; |
6714977b | 93 | int mode_flags = 0; |
f453ba04 | 94 | |
9440106b JG |
95 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", connector->base.id, |
96 | drm_get_connector_name(connector)); | |
f453ba04 DA |
97 | /* set all modes to the unverified state */ |
98 | list_for_each_entry_safe(mode, t, &connector->modes, head) | |
99 | mode->status = MODE_UNVERIFIED; | |
100 | ||
d50ba256 DA |
101 | if (connector->force) { |
102 | if (connector->force == DRM_FORCE_ON) | |
103 | connector->status = connector_status_connected; | |
104 | else | |
105 | connector->status = connector_status_disconnected; | |
106 | if (connector->funcs->force) | |
107 | connector->funcs->force(connector); | |
e58f637b | 108 | } else { |
930a9e28 | 109 | connector->status = connector->funcs->detect(connector, true); |
551402a3 | 110 | drm_kms_helper_poll_enable(dev); |
e58f637b | 111 | } |
f453ba04 DA |
112 | |
113 | if (connector->status == connector_status_disconnected) { | |
9440106b JG |
114 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] disconnected\n", |
115 | connector->base.id, drm_get_connector_name(connector)); | |
72539832 | 116 | drm_mode_connector_update_edid_property(connector, NULL); |
620f3781 | 117 | goto prune; |
f453ba04 DA |
118 | } |
119 | ||
40a518d9 | 120 | count = (*connector_funcs->get_modes)(connector); |
c7ef35a9 | 121 | if (count == 0 && connector->status == connector_status_connected) |
9632b41f | 122 | count = drm_add_modes_noedid(connector, 1024, 768); |
c7ef35a9 CW |
123 | if (count == 0) |
124 | goto prune; | |
f453ba04 | 125 | |
40a518d9 | 126 | drm_mode_connector_list_update(connector); |
f453ba04 DA |
127 | |
128 | if (maxX && maxY) | |
129 | drm_mode_validate_size(dev, &connector->modes, maxX, | |
130 | maxY, 0); | |
6714977b | 131 | |
132 | if (connector->interlace_allowed) | |
133 | mode_flags |= DRM_MODE_FLAG_INTERLACE; | |
134 | if (connector->doublescan_allowed) | |
135 | mode_flags |= DRM_MODE_FLAG_DBLSCAN; | |
136 | drm_mode_validate_flag(connector, mode_flags); | |
137 | ||
f453ba04 DA |
138 | list_for_each_entry_safe(mode, t, &connector->modes, head) { |
139 | if (mode->status == MODE_OK) | |
140 | mode->status = connector_funcs->mode_valid(connector, | |
141 | mode); | |
142 | } | |
143 | ||
620f3781 | 144 | prune: |
f453ba04 DA |
145 | drm_mode_prune_invalid(dev, &connector->modes, true); |
146 | ||
40a518d9 JB |
147 | if (list_empty(&connector->modes)) |
148 | return 0; | |
f453ba04 DA |
149 | |
150 | drm_mode_sort(&connector->modes); | |
151 | ||
9440106b JG |
152 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] probed modes :\n", connector->base.id, |
153 | drm_get_connector_name(connector)); | |
f453ba04 DA |
154 | list_for_each_entry_safe(mode, t, &connector->modes, head) { |
155 | mode->vrefresh = drm_mode_vrefresh(mode); | |
156 | ||
157 | drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V); | |
158 | drm_mode_debug_printmodeline(mode); | |
159 | } | |
40a518d9 JB |
160 | |
161 | return count; | |
f453ba04 DA |
162 | } |
163 | EXPORT_SYMBOL(drm_helper_probe_single_connector_modes); | |
164 | ||
c9fb15f6 KP |
165 | /** |
166 | * drm_helper_encoder_in_use - check if a given encoder is in use | |
167 | * @encoder: encoder to check | |
168 | * | |
169 | * LOCKING: | |
170 | * Caller must hold mode config lock. | |
171 | * | |
172 | * Walk @encoders's DRM device's mode_config and see if it's in use. | |
173 | * | |
174 | * RETURNS: | |
175 | * True if @encoder is part of the mode_config, false otherwise. | |
176 | */ | |
177 | bool drm_helper_encoder_in_use(struct drm_encoder *encoder) | |
178 | { | |
179 | struct drm_connector *connector; | |
180 | struct drm_device *dev = encoder->dev; | |
181 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) | |
182 | if (connector->encoder == encoder) | |
183 | return true; | |
184 | return false; | |
185 | } | |
186 | EXPORT_SYMBOL(drm_helper_encoder_in_use); | |
187 | ||
f453ba04 DA |
188 | /** |
189 | * drm_helper_crtc_in_use - check if a given CRTC is in a mode_config | |
190 | * @crtc: CRTC to check | |
191 | * | |
192 | * LOCKING: | |
193 | * Caller must hold mode config lock. | |
194 | * | |
195 | * Walk @crtc's DRM device's mode_config and see if it's in use. | |
196 | * | |
197 | * RETURNS: | |
198 | * True if @crtc is part of the mode_config, false otherwise. | |
199 | */ | |
200 | bool drm_helper_crtc_in_use(struct drm_crtc *crtc) | |
201 | { | |
202 | struct drm_encoder *encoder; | |
203 | struct drm_device *dev = crtc->dev; | |
204 | /* FIXME: Locking around list access? */ | |
205 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) | |
c9fb15f6 | 206 | if (encoder->crtc == crtc && drm_helper_encoder_in_use(encoder)) |
f453ba04 DA |
207 | return true; |
208 | return false; | |
209 | } | |
210 | EXPORT_SYMBOL(drm_helper_crtc_in_use); | |
211 | ||
86a1b9d1 BS |
212 | static void |
213 | drm_encoder_disable(struct drm_encoder *encoder) | |
214 | { | |
215 | struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; | |
216 | ||
217 | if (encoder_funcs->disable) | |
218 | (*encoder_funcs->disable)(encoder); | |
219 | else | |
220 | (*encoder_funcs->dpms)(encoder, DRM_MODE_DPMS_OFF); | |
221 | } | |
222 | ||
f453ba04 | 223 | /** |
89347bb8 | 224 | * drm_helper_disable_unused_functions - disable unused objects |
f453ba04 DA |
225 | * @dev: DRM device |
226 | * | |
227 | * LOCKING: | |
228 | * Caller must hold mode config lock. | |
229 | * | |
230 | * If an connector or CRTC isn't part of @dev's mode_config, it can be disabled | |
231 | * by calling its dpms function, which should power it off. | |
232 | */ | |
233 | void drm_helper_disable_unused_functions(struct drm_device *dev) | |
234 | { | |
235 | struct drm_encoder *encoder; | |
a3a0544b | 236 | struct drm_connector *connector; |
f453ba04 DA |
237 | struct drm_crtc *crtc; |
238 | ||
a3a0544b DA |
239 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
240 | if (!connector->encoder) | |
241 | continue; | |
242 | if (connector->status == connector_status_disconnected) | |
243 | connector->encoder = NULL; | |
244 | } | |
245 | ||
f453ba04 | 246 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
92971021 | 247 | if (!drm_helper_encoder_in_use(encoder)) { |
86a1b9d1 | 248 | drm_encoder_disable(encoder); |
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) { | |
5c8d7171 AD |
258 | if (crtc_funcs->disable) |
259 | (*crtc_funcs->disable)(crtc); | |
260 | else | |
261 | (*crtc_funcs->dpms)(crtc, DRM_MODE_DPMS_OFF); | |
f453ba04 DA |
262 | crtc->fb = NULL; |
263 | } | |
264 | } | |
265 | } | |
266 | EXPORT_SYMBOL(drm_helper_disable_unused_functions); | |
267 | ||
7bec756c JB |
268 | /** |
269 | * drm_encoder_crtc_ok - can a given crtc drive a given encoder? | |
270 | * @encoder: encoder to test | |
271 | * @crtc: crtc to test | |
272 | * | |
273 | * Return false if @encoder can't be driven by @crtc, true otherwise. | |
274 | */ | |
275 | static bool drm_encoder_crtc_ok(struct drm_encoder *encoder, | |
276 | struct drm_crtc *crtc) | |
277 | { | |
278 | struct drm_device *dev; | |
279 | struct drm_crtc *tmp; | |
280 | int crtc_mask = 1; | |
281 | ||
fce7d61b | 282 | WARN(!crtc, "checking null crtc?\n"); |
7bec756c JB |
283 | |
284 | dev = crtc->dev; | |
285 | ||
286 | list_for_each_entry(tmp, &dev->mode_config.crtc_list, head) { | |
287 | if (tmp == crtc) | |
288 | break; | |
289 | crtc_mask <<= 1; | |
290 | } | |
291 | ||
292 | if (encoder->possible_crtcs & crtc_mask) | |
293 | return true; | |
294 | return false; | |
295 | } | |
296 | ||
297 | /* | |
298 | * Check the CRTC we're going to map each output to vs. its current | |
299 | * CRTC. If they don't match, we have to disable the output and the CRTC | |
300 | * since the driver will have to re-route things. | |
301 | */ | |
302 | static void | |
303 | drm_crtc_prepare_encoders(struct drm_device *dev) | |
304 | { | |
305 | struct drm_encoder_helper_funcs *encoder_funcs; | |
306 | struct drm_encoder *encoder; | |
307 | ||
308 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
309 | encoder_funcs = encoder->helper_private; | |
310 | /* Disable unused encoders */ | |
311 | if (encoder->crtc == NULL) | |
86a1b9d1 | 312 | drm_encoder_disable(encoder); |
7bec756c JB |
313 | /* Disable encoders whose CRTC is about to change */ |
314 | if (encoder_funcs->get_crtc && | |
315 | encoder->crtc != (*encoder_funcs->get_crtc)(encoder)) | |
86a1b9d1 | 316 | drm_encoder_disable(encoder); |
7bec756c JB |
317 | } |
318 | } | |
319 | ||
f453ba04 DA |
320 | /** |
321 | * drm_crtc_set_mode - set a mode | |
322 | * @crtc: CRTC to program | |
323 | * @mode: mode to use | |
324 | * @x: width of mode | |
325 | * @y: height of mode | |
326 | * | |
327 | * LOCKING: | |
328 | * Caller must hold mode config lock. | |
329 | * | |
330 | * Try to set @mode on @crtc. Give @crtc and its associated connectors a chance | |
331 | * to fixup or reject the mode prior to trying to set it. | |
332 | * | |
333 | * RETURNS: | |
334 | * True if the mode was set successfully, or false otherwise. | |
335 | */ | |
336 | bool drm_crtc_helper_set_mode(struct drm_crtc *crtc, | |
337 | struct drm_display_mode *mode, | |
3c4fdcfb KH |
338 | int x, int y, |
339 | struct drm_framebuffer *old_fb) | |
f453ba04 DA |
340 | { |
341 | struct drm_device *dev = crtc->dev; | |
27641c3f | 342 | struct drm_display_mode *adjusted_mode, saved_mode, saved_hwmode; |
f453ba04 DA |
343 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
344 | struct drm_encoder_helper_funcs *encoder_funcs; | |
345 | int saved_x, saved_y; | |
346 | struct drm_encoder *encoder; | |
347 | bool ret = true; | |
348 | ||
f453ba04 | 349 | crtc->enabled = drm_helper_crtc_in_use(crtc); |
f453ba04 DA |
350 | if (!crtc->enabled) |
351 | return true; | |
352 | ||
021a8455 CW |
353 | adjusted_mode = drm_mode_duplicate(dev, mode); |
354 | ||
27641c3f | 355 | saved_hwmode = crtc->hwmode; |
f453ba04 DA |
356 | saved_mode = crtc->mode; |
357 | saved_x = crtc->x; | |
358 | saved_y = crtc->y; | |
359 | ||
360 | /* Update crtc values up front so the driver can rely on them for mode | |
361 | * setting. | |
362 | */ | |
363 | crtc->mode = *mode; | |
364 | crtc->x = x; | |
365 | crtc->y = y; | |
366 | ||
f453ba04 DA |
367 | /* Pass our mode to the connectors and the CRTC to give them a chance to |
368 | * adjust it according to limitations or connector properties, and also | |
369 | * a chance to reject the mode entirely. | |
370 | */ | |
371 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
372 | ||
373 | if (encoder->crtc != crtc) | |
374 | continue; | |
375 | encoder_funcs = encoder->helper_private; | |
376 | if (!(ret = encoder_funcs->mode_fixup(encoder, mode, | |
377 | adjusted_mode))) { | |
836e53d7 | 378 | DRM_DEBUG_KMS("Encoder fixup failed\n"); |
f453ba04 DA |
379 | goto done; |
380 | } | |
381 | } | |
382 | ||
383 | if (!(ret = crtc_funcs->mode_fixup(crtc, mode, adjusted_mode))) { | |
836e53d7 | 384 | DRM_DEBUG_KMS("CRTC fixup failed\n"); |
f453ba04 DA |
385 | goto done; |
386 | } | |
9440106b | 387 | DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id); |
f453ba04 DA |
388 | |
389 | /* Prepare the encoders and CRTCs before setting the mode. */ | |
390 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
391 | ||
392 | if (encoder->crtc != crtc) | |
393 | continue; | |
394 | encoder_funcs = encoder->helper_private; | |
395 | /* Disable the encoders as the first thing we do. */ | |
396 | encoder_funcs->prepare(encoder); | |
397 | } | |
398 | ||
7bec756c JB |
399 | drm_crtc_prepare_encoders(dev); |
400 | ||
f453ba04 DA |
401 | crtc_funcs->prepare(crtc); |
402 | ||
403 | /* Set up the DPLL and any encoders state that needs to adjust or depend | |
404 | * on the DPLL. | |
405 | */ | |
5c3b82e2 CW |
406 | ret = !crtc_funcs->mode_set(crtc, mode, adjusted_mode, x, y, old_fb); |
407 | if (!ret) | |
408 | goto done; | |
f453ba04 DA |
409 | |
410 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
411 | ||
412 | if (encoder->crtc != crtc) | |
413 | continue; | |
414 | ||
9440106b JG |
415 | DRM_DEBUG_KMS("[ENCODER:%d:%s] set [MODE:%d:%s]\n", |
416 | encoder->base.id, drm_get_encoder_name(encoder), | |
417 | mode->base.id, mode->name); | |
f453ba04 DA |
418 | encoder_funcs = encoder->helper_private; |
419 | encoder_funcs->mode_set(encoder, mode, adjusted_mode); | |
420 | } | |
421 | ||
422 | /* Now enable the clocks, plane, pipe, and connectors that we set up. */ | |
423 | crtc_funcs->commit(crtc); | |
424 | ||
425 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
426 | ||
427 | if (encoder->crtc != crtc) | |
428 | continue; | |
429 | ||
430 | encoder_funcs = encoder->helper_private; | |
431 | encoder_funcs->commit(encoder); | |
432 | ||
433 | } | |
434 | ||
27641c3f MK |
435 | /* Store real post-adjustment hardware mode. */ |
436 | crtc->hwmode = *adjusted_mode; | |
437 | ||
438 | /* Calculate and store various constants which | |
439 | * are later needed by vblank and swap-completion | |
440 | * timestamping. They are derived from true hwmode. | |
441 | */ | |
442 | drm_calc_timestamping_constants(crtc); | |
443 | ||
f453ba04 DA |
444 | /* FIXME: add subpixel order */ |
445 | done: | |
021a8455 | 446 | drm_mode_destroy(dev, adjusted_mode); |
f453ba04 | 447 | if (!ret) { |
27641c3f | 448 | crtc->hwmode = saved_hwmode; |
f453ba04 DA |
449 | crtc->mode = saved_mode; |
450 | crtc->x = saved_x; | |
451 | crtc->y = saved_y; | |
452 | } | |
453 | ||
454 | return ret; | |
455 | } | |
456 | EXPORT_SYMBOL(drm_crtc_helper_set_mode); | |
457 | ||
458 | ||
459 | /** | |
460 | * drm_crtc_helper_set_config - set a new config from userspace | |
461 | * @crtc: CRTC to setup | |
462 | * @crtc_info: user provided configuration | |
463 | * @new_mode: new mode to set | |
464 | * @connector_set: set of connectors for the new config | |
465 | * @fb: new framebuffer | |
466 | * | |
467 | * LOCKING: | |
468 | * Caller must hold mode config lock. | |
469 | * | |
470 | * Setup a new configuration, provided by the user in @crtc_info, and enable | |
471 | * it. | |
472 | * | |
473 | * RETURNS: | |
474 | * Zero. (FIXME) | |
475 | */ | |
476 | int drm_crtc_helper_set_config(struct drm_mode_set *set) | |
477 | { | |
478 | struct drm_device *dev; | |
e67aae79 MM |
479 | struct drm_crtc *save_crtcs, *new_crtc, *crtc; |
480 | struct drm_encoder *save_encoders, *new_encoder, *encoder; | |
7bec756c | 481 | struct drm_framebuffer *old_fb = NULL; |
4cb72b17 JB |
482 | bool mode_changed = false; /* if true do a full mode set */ |
483 | bool fb_changed = false; /* if true and !mode_changed just do a flip */ | |
e67aae79 | 484 | struct drm_connector *save_connectors, *connector; |
f453ba04 DA |
485 | int count = 0, ro, fail = 0; |
486 | struct drm_crtc_helper_funcs *crtc_funcs; | |
487 | int ret = 0; | |
bf9dc102 | 488 | int i; |
f453ba04 | 489 | |
58367ed6 | 490 | DRM_DEBUG_KMS("\n"); |
f453ba04 DA |
491 | |
492 | if (!set) | |
493 | return -EINVAL; | |
494 | ||
495 | if (!set->crtc) | |
496 | return -EINVAL; | |
497 | ||
498 | if (!set->crtc->helper_private) | |
499 | return -EINVAL; | |
500 | ||
501 | crtc_funcs = set->crtc->helper_private; | |
502 | ||
ede3ff52 CW |
503 | if (!set->mode) |
504 | set->fb = NULL; | |
505 | ||
9440106b JG |
506 | if (set->fb) { |
507 | DRM_DEBUG_KMS("[CRTC:%d] [FB:%d] #connectors=%d (x y) (%i %i)\n", | |
508 | set->crtc->base.id, set->fb->base.id, | |
509 | (int)set->num_connectors, set->x, set->y); | |
510 | } else { | |
ede3ff52 CW |
511 | DRM_DEBUG_KMS("[CRTC:%d] [NOFB]\n", set->crtc->base.id); |
512 | set->mode = NULL; | |
513 | set->num_connectors = 0; | |
9440106b | 514 | } |
f453ba04 DA |
515 | |
516 | dev = set->crtc->dev; | |
517 | ||
e67aae79 MM |
518 | /* Allocate space for the backup of all (non-pointer) crtc, encoder and |
519 | * connector data. */ | |
520 | save_crtcs = kzalloc(dev->mode_config.num_crtc * | |
521 | sizeof(struct drm_crtc), GFP_KERNEL); | |
f453ba04 DA |
522 | if (!save_crtcs) |
523 | return -ENOMEM; | |
524 | ||
e67aae79 MM |
525 | save_encoders = kzalloc(dev->mode_config.num_encoder * |
526 | sizeof(struct drm_encoder), GFP_KERNEL); | |
f453ba04 DA |
527 | if (!save_encoders) { |
528 | kfree(save_crtcs); | |
529 | return -ENOMEM; | |
530 | } | |
531 | ||
e67aae79 MM |
532 | save_connectors = kzalloc(dev->mode_config.num_connector * |
533 | sizeof(struct drm_connector), GFP_KERNEL); | |
534 | if (!save_connectors) { | |
535 | kfree(save_crtcs); | |
536 | kfree(save_encoders); | |
537 | return -ENOMEM; | |
538 | } | |
539 | ||
540 | /* Copy data. Note that driver private data is not affected. | |
541 | * Should anything bad happen only the expected state is | |
542 | * restored, not the drivers personal bookkeeping. | |
543 | */ | |
544 | count = 0; | |
545 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
546 | save_crtcs[count++] = *crtc; | |
547 | } | |
548 | ||
549 | count = 0; | |
550 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
551 | save_encoders[count++] = *encoder; | |
552 | } | |
553 | ||
554 | count = 0; | |
555 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
556 | save_connectors[count++] = *connector; | |
557 | } | |
558 | ||
f453ba04 DA |
559 | /* We should be able to check here if the fb has the same properties |
560 | * and then just flip_or_move it */ | |
561 | if (set->crtc->fb != set->fb) { | |
712531bf | 562 | /* If we have no fb then treat it as a full mode set */ |
7bec756c | 563 | if (set->crtc->fb == NULL) { |
58367ed6 | 564 | DRM_DEBUG_KMS("crtc has no fb, full mode set\n"); |
712531bf | 565 | mode_changed = true; |
4cb72b17 JB |
566 | } else if (set->fb == NULL) { |
567 | mode_changed = true; | |
46e48456 JB |
568 | } else if (set->fb->depth != set->crtc->fb->depth) { |
569 | mode_changed = true; | |
570 | } else if (set->fb->bits_per_pixel != | |
571 | set->crtc->fb->bits_per_pixel) { | |
572 | mode_changed = true; | |
8dff4742 | 573 | } else |
712531bf | 574 | fb_changed = true; |
f453ba04 DA |
575 | } |
576 | ||
577 | if (set->x != set->crtc->x || set->y != set->crtc->y) | |
712531bf | 578 | fb_changed = true; |
f453ba04 DA |
579 | |
580 | if (set->mode && !drm_mode_equal(set->mode, &set->crtc->mode)) { | |
58367ed6 | 581 | DRM_DEBUG_KMS("modes are different, full mode set\n"); |
f453ba04 DA |
582 | drm_mode_debug_printmodeline(&set->crtc->mode); |
583 | drm_mode_debug_printmodeline(set->mode); | |
712531bf | 584 | mode_changed = true; |
f453ba04 DA |
585 | } |
586 | ||
587 | /* a) traverse passed in connector list and get encoders for them */ | |
588 | count = 0; | |
589 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
590 | struct drm_connector_helper_funcs *connector_funcs = | |
591 | connector->helper_private; | |
f453ba04 DA |
592 | new_encoder = connector->encoder; |
593 | for (ro = 0; ro < set->num_connectors; ro++) { | |
594 | if (set->connectors[ro] == connector) { | |
595 | new_encoder = connector_funcs->best_encoder(connector); | |
596 | /* if we can't get an encoder for a connector | |
597 | we are setting now - then fail */ | |
598 | if (new_encoder == NULL) | |
599 | /* don't break so fail path works correct */ | |
600 | fail = 1; | |
601 | break; | |
602 | } | |
603 | } | |
604 | ||
605 | if (new_encoder != connector->encoder) { | |
58367ed6 | 606 | DRM_DEBUG_KMS("encoder changed, full mode switch\n"); |
712531bf | 607 | mode_changed = true; |
ff846ab7 MM |
608 | /* If the encoder is reused for another connector, then |
609 | * the appropriate crtc will be set later. | |
610 | */ | |
ff6fdbed MM |
611 | if (connector->encoder) |
612 | connector->encoder->crtc = NULL; | |
f453ba04 DA |
613 | connector->encoder = new_encoder; |
614 | } | |
615 | } | |
616 | ||
617 | if (fail) { | |
618 | ret = -EINVAL; | |
e67aae79 | 619 | goto fail; |
f453ba04 DA |
620 | } |
621 | ||
622 | count = 0; | |
623 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
624 | if (!connector->encoder) | |
625 | continue; | |
626 | ||
f453ba04 DA |
627 | if (connector->encoder->crtc == set->crtc) |
628 | new_crtc = NULL; | |
629 | else | |
630 | new_crtc = connector->encoder->crtc; | |
631 | ||
632 | for (ro = 0; ro < set->num_connectors; ro++) { | |
633 | if (set->connectors[ro] == connector) | |
634 | new_crtc = set->crtc; | |
635 | } | |
7bec756c JB |
636 | |
637 | /* Make sure the new CRTC will work with the encoder */ | |
638 | if (new_crtc && | |
639 | !drm_encoder_crtc_ok(connector->encoder, new_crtc)) { | |
640 | ret = -EINVAL; | |
e67aae79 | 641 | goto fail; |
7bec756c | 642 | } |
f453ba04 | 643 | if (new_crtc != connector->encoder->crtc) { |
58367ed6 | 644 | DRM_DEBUG_KMS("crtc changed, full mode switch\n"); |
712531bf | 645 | mode_changed = true; |
f453ba04 DA |
646 | connector->encoder->crtc = new_crtc; |
647 | } | |
9440106b JG |
648 | if (new_crtc) { |
649 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] to [CRTC:%d]\n", | |
650 | connector->base.id, drm_get_connector_name(connector), | |
651 | new_crtc->base.id); | |
652 | } else { | |
653 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] to [NOCRTC]\n", | |
654 | connector->base.id, drm_get_connector_name(connector)); | |
655 | } | |
f453ba04 DA |
656 | } |
657 | ||
658 | /* mode_set_base is not a required function */ | |
712531bf JB |
659 | if (fb_changed && !crtc_funcs->mode_set_base) |
660 | mode_changed = true; | |
f453ba04 | 661 | |
712531bf | 662 | if (mode_changed) { |
9334ef75 CW |
663 | set->crtc->enabled = drm_helper_crtc_in_use(set->crtc); |
664 | if (set->crtc->enabled) { | |
58367ed6 ZY |
665 | DRM_DEBUG_KMS("attempting to set mode from" |
666 | " userspace\n"); | |
f453ba04 | 667 | drm_mode_debug_printmodeline(set->mode); |
356ad3cd CW |
668 | old_fb = set->crtc->fb; |
669 | set->crtc->fb = set->fb; | |
f453ba04 | 670 | if (!drm_crtc_helper_set_mode(set->crtc, set->mode, |
3c4fdcfb KH |
671 | set->x, set->y, |
672 | old_fb)) { | |
9440106b JG |
673 | DRM_ERROR("failed to set mode on [CRTC:%d]\n", |
674 | set->crtc->base.id); | |
0ba41e44 | 675 | set->crtc->fb = old_fb; |
f453ba04 | 676 | ret = -EINVAL; |
e67aae79 | 677 | goto fail; |
f453ba04 | 678 | } |
811aaa55 KP |
679 | DRM_DEBUG_KMS("Setting connector DPMS state to on\n"); |
680 | for (i = 0; i < set->num_connectors; i++) { | |
681 | DRM_DEBUG_KMS("\t[CONNECTOR:%d:%s] set DPMS on\n", set->connectors[i]->base.id, | |
682 | drm_get_connector_name(set->connectors[i])); | |
683 | set->connectors[i]->dpms = DRM_MODE_DPMS_ON; | |
684 | } | |
f453ba04 DA |
685 | } |
686 | drm_helper_disable_unused_functions(dev); | |
712531bf | 687 | } else if (fb_changed) { |
9b1596af BS |
688 | set->crtc->x = set->x; |
689 | set->crtc->y = set->y; | |
690 | ||
3c4fdcfb | 691 | old_fb = set->crtc->fb; |
f453ba04 DA |
692 | if (set->crtc->fb != set->fb) |
693 | set->crtc->fb = set->fb; | |
5c3b82e2 CW |
694 | ret = crtc_funcs->mode_set_base(set->crtc, |
695 | set->x, set->y, old_fb); | |
0ba41e44 CW |
696 | if (ret != 0) { |
697 | set->crtc->fb = old_fb; | |
e67aae79 | 698 | goto fail; |
0ba41e44 | 699 | } |
f453ba04 DA |
700 | } |
701 | ||
e67aae79 | 702 | kfree(save_connectors); |
f453ba04 DA |
703 | kfree(save_encoders); |
704 | kfree(save_crtcs); | |
705 | return 0; | |
706 | ||
e67aae79 MM |
707 | fail: |
708 | /* Restore all previous data. */ | |
f453ba04 | 709 | count = 0; |
e67aae79 MM |
710 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
711 | *crtc = save_crtcs[count++]; | |
712 | } | |
e62fb64e | 713 | |
e67aae79 MM |
714 | count = 0; |
715 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
716 | *encoder = save_encoders[count++]; | |
e62fb64e | 717 | } |
e67aae79 | 718 | |
f453ba04 DA |
719 | count = 0; |
720 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
e67aae79 | 721 | *connector = save_connectors[count++]; |
f453ba04 | 722 | } |
e67aae79 MM |
723 | |
724 | kfree(save_connectors); | |
f453ba04 | 725 | kfree(save_encoders); |
e67aae79 | 726 | kfree(save_crtcs); |
f453ba04 DA |
727 | return ret; |
728 | } | |
729 | EXPORT_SYMBOL(drm_crtc_helper_set_config); | |
730 | ||
c9fb15f6 KP |
731 | static int drm_helper_choose_encoder_dpms(struct drm_encoder *encoder) |
732 | { | |
733 | int dpms = DRM_MODE_DPMS_OFF; | |
734 | struct drm_connector *connector; | |
735 | struct drm_device *dev = encoder->dev; | |
736 | ||
737 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) | |
738 | if (connector->encoder == encoder) | |
739 | if (connector->dpms < dpms) | |
740 | dpms = connector->dpms; | |
741 | return dpms; | |
742 | } | |
743 | ||
744 | static int drm_helper_choose_crtc_dpms(struct drm_crtc *crtc) | |
745 | { | |
746 | int dpms = DRM_MODE_DPMS_OFF; | |
747 | struct drm_connector *connector; | |
748 | struct drm_device *dev = crtc->dev; | |
749 | ||
750 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) | |
751 | if (connector->encoder && connector->encoder->crtc == crtc) | |
752 | if (connector->dpms < dpms) | |
753 | dpms = connector->dpms; | |
754 | return dpms; | |
755 | } | |
756 | ||
757 | /** | |
758 | * drm_helper_connector_dpms | |
759 | * @connector affected connector | |
760 | * @mode DPMS mode | |
761 | * | |
762 | * Calls the low-level connector DPMS function, then | |
763 | * calls appropriate encoder and crtc DPMS functions as well | |
764 | */ | |
765 | void drm_helper_connector_dpms(struct drm_connector *connector, int mode) | |
766 | { | |
767 | struct drm_encoder *encoder = connector->encoder; | |
768 | struct drm_crtc *crtc = encoder ? encoder->crtc : NULL; | |
769 | int old_dpms; | |
770 | ||
771 | if (mode == connector->dpms) | |
772 | return; | |
773 | ||
774 | old_dpms = connector->dpms; | |
775 | connector->dpms = mode; | |
776 | ||
777 | /* from off to on, do crtc then encoder */ | |
778 | if (mode < old_dpms) { | |
779 | if (crtc) { | |
780 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; | |
781 | if (crtc_funcs->dpms) | |
782 | (*crtc_funcs->dpms) (crtc, | |
783 | drm_helper_choose_crtc_dpms(crtc)); | |
784 | } | |
785 | if (encoder) { | |
786 | struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; | |
787 | if (encoder_funcs->dpms) | |
788 | (*encoder_funcs->dpms) (encoder, | |
789 | drm_helper_choose_encoder_dpms(encoder)); | |
790 | } | |
791 | } | |
792 | ||
793 | /* from on to off, do encoder then crtc */ | |
794 | if (mode > old_dpms) { | |
795 | if (encoder) { | |
796 | struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; | |
797 | if (encoder_funcs->dpms) | |
798 | (*encoder_funcs->dpms) (encoder, | |
799 | drm_helper_choose_encoder_dpms(encoder)); | |
800 | } | |
801 | if (crtc) { | |
802 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; | |
803 | if (crtc_funcs->dpms) | |
804 | (*crtc_funcs->dpms) (crtc, | |
805 | drm_helper_choose_crtc_dpms(crtc)); | |
806 | } | |
807 | } | |
808 | ||
809 | return; | |
810 | } | |
811 | EXPORT_SYMBOL(drm_helper_connector_dpms); | |
812 | ||
f453ba04 DA |
813 | int drm_helper_mode_fill_fb_struct(struct drm_framebuffer *fb, |
814 | struct drm_mode_fb_cmd *mode_cmd) | |
815 | { | |
816 | fb->width = mode_cmd->width; | |
817 | fb->height = mode_cmd->height; | |
818 | fb->pitch = mode_cmd->pitch; | |
819 | fb->bits_per_pixel = mode_cmd->bpp; | |
820 | fb->depth = mode_cmd->depth; | |
821 | ||
822 | return 0; | |
823 | } | |
824 | EXPORT_SYMBOL(drm_helper_mode_fill_fb_struct); | |
825 | ||
826 | int drm_helper_resume_force_mode(struct drm_device *dev) | |
827 | { | |
828 | struct drm_crtc *crtc; | |
89347bb8 DJ |
829 | struct drm_encoder *encoder; |
830 | struct drm_encoder_helper_funcs *encoder_funcs; | |
831 | struct drm_crtc_helper_funcs *crtc_funcs; | |
f453ba04 DA |
832 | int ret; |
833 | ||
834 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
835 | ||
836 | if (!crtc->enabled) | |
837 | continue; | |
838 | ||
3c4fdcfb KH |
839 | ret = drm_crtc_helper_set_mode(crtc, &crtc->mode, |
840 | crtc->x, crtc->y, crtc->fb); | |
f453ba04 DA |
841 | |
842 | if (ret == false) | |
843 | DRM_ERROR("failed to set mode on crtc %p\n", crtc); | |
89347bb8 DJ |
844 | |
845 | /* Turn off outputs that were already powered off */ | |
846 | if (drm_helper_choose_crtc_dpms(crtc)) { | |
847 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
848 | ||
849 | if(encoder->crtc != crtc) | |
850 | continue; | |
851 | ||
852 | encoder_funcs = encoder->helper_private; | |
853 | if (encoder_funcs->dpms) | |
854 | (*encoder_funcs->dpms) (encoder, | |
855 | drm_helper_choose_encoder_dpms(encoder)); | |
89347bb8 | 856 | } |
817e631e CW |
857 | |
858 | crtc_funcs = crtc->helper_private; | |
859 | if (crtc_funcs->dpms) | |
860 | (*crtc_funcs->dpms) (crtc, | |
861 | drm_helper_choose_crtc_dpms(crtc)); | |
89347bb8 | 862 | } |
f453ba04 | 863 | } |
af4fcb57 ZY |
864 | /* disable the unused connectors while restoring the modesetting */ |
865 | drm_helper_disable_unused_functions(dev); | |
f453ba04 DA |
866 | return 0; |
867 | } | |
868 | EXPORT_SYMBOL(drm_helper_resume_force_mode); | |
eb1f8e4f | 869 | |
eb1f8e4f | 870 | #define DRM_OUTPUT_POLL_PERIOD (10*HZ) |
991ea75c | 871 | static void output_poll_execute(struct work_struct *work) |
eb1f8e4f | 872 | { |
991ea75c TH |
873 | struct delayed_work *delayed_work = to_delayed_work(work); |
874 | struct drm_device *dev = container_of(delayed_work, struct drm_device, mode_config.output_poll_work); | |
eb1f8e4f | 875 | struct drm_connector *connector; |
c5027dec | 876 | enum drm_connector_status old_status; |
eb1f8e4f | 877 | bool repoll = false, changed = false; |
eb1f8e4f | 878 | |
e58f637b CW |
879 | if (!drm_kms_helper_poll) |
880 | return; | |
881 | ||
eb1f8e4f DA |
882 | mutex_lock(&dev->mode_config.mutex); |
883 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
884 | ||
885 | /* if this is HPD or polled don't check it - | |
886 | TV out for instance */ | |
887 | if (!connector->polled) | |
888 | continue; | |
889 | ||
890 | else if (connector->polled & (DRM_CONNECTOR_POLL_CONNECT | DRM_CONNECTOR_POLL_DISCONNECT)) | |
891 | repoll = true; | |
892 | ||
893 | old_status = connector->status; | |
894 | /* if we are connected and don't want to poll for disconnect | |
895 | skip it */ | |
896 | if (old_status == connector_status_connected && | |
897 | !(connector->polled & DRM_CONNECTOR_POLL_DISCONNECT) && | |
898 | !(connector->polled & DRM_CONNECTOR_POLL_HPD)) | |
899 | continue; | |
900 | ||
c5027dec | 901 | connector->status = connector->funcs->detect(connector, false); |
0f16830e CW |
902 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] status updated from %d to %d\n", |
903 | connector->base.id, | |
904 | drm_get_connector_name(connector), | |
905 | old_status, connector->status); | |
c5027dec | 906 | if (old_status != connector->status) |
eb1f8e4f DA |
907 | changed = true; |
908 | } | |
909 | ||
910 | mutex_unlock(&dev->mode_config.mutex); | |
911 | ||
912 | if (changed) { | |
913 | /* send a uevent + call fbdev */ | |
914 | drm_sysfs_hotplug_event(dev); | |
915 | if (dev->mode_config.funcs->output_poll_changed) | |
916 | dev->mode_config.funcs->output_poll_changed(dev); | |
917 | } | |
918 | ||
9a919c46 TH |
919 | if (repoll) |
920 | queue_delayed_work(system_nrt_wq, delayed_work, DRM_OUTPUT_POLL_PERIOD); | |
eb1f8e4f DA |
921 | } |
922 | ||
fbf81762 DA |
923 | void drm_kms_helper_poll_disable(struct drm_device *dev) |
924 | { | |
925 | if (!dev->mode_config.poll_enabled) | |
926 | return; | |
991ea75c | 927 | cancel_delayed_work_sync(&dev->mode_config.output_poll_work); |
fbf81762 DA |
928 | } |
929 | EXPORT_SYMBOL(drm_kms_helper_poll_disable); | |
930 | ||
931 | void drm_kms_helper_poll_enable(struct drm_device *dev) | |
eb1f8e4f | 932 | { |
eb1f8e4f | 933 | bool poll = false; |
fbf81762 | 934 | struct drm_connector *connector; |
eb1f8e4f | 935 | |
e58f637b CW |
936 | if (!dev->mode_config.poll_enabled || !drm_kms_helper_poll) |
937 | return; | |
938 | ||
eb1f8e4f DA |
939 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
940 | if (connector->polled) | |
941 | poll = true; | |
942 | } | |
eb1f8e4f | 943 | |
9a919c46 TH |
944 | if (poll) |
945 | queue_delayed_work(system_nrt_wq, &dev->mode_config.output_poll_work, DRM_OUTPUT_POLL_PERIOD); | |
eb1f8e4f | 946 | } |
fbf81762 DA |
947 | EXPORT_SYMBOL(drm_kms_helper_poll_enable); |
948 | ||
949 | void drm_kms_helper_poll_init(struct drm_device *dev) | |
950 | { | |
991ea75c | 951 | INIT_DELAYED_WORK(&dev->mode_config.output_poll_work, output_poll_execute); |
fbf81762 DA |
952 | dev->mode_config.poll_enabled = true; |
953 | ||
954 | drm_kms_helper_poll_enable(dev); | |
955 | } | |
eb1f8e4f DA |
956 | EXPORT_SYMBOL(drm_kms_helper_poll_init); |
957 | ||
958 | void drm_kms_helper_poll_fini(struct drm_device *dev) | |
959 | { | |
fbf81762 | 960 | drm_kms_helper_poll_disable(dev); |
eb1f8e4f DA |
961 | } |
962 | EXPORT_SYMBOL(drm_kms_helper_poll_fini); | |
963 | ||
964 | void drm_helper_hpd_irq_event(struct drm_device *dev) | |
965 | { | |
966 | if (!dev->mode_config.poll_enabled) | |
967 | return; | |
e58f637b | 968 | |
991ea75c TH |
969 | /* kill timer and schedule immediate execution, this doesn't block */ |
970 | cancel_delayed_work(&dev->mode_config.output_poll_work); | |
e58f637b CW |
971 | if (drm_kms_helper_poll) |
972 | queue_delayed_work(system_nrt_wq, &dev->mode_config.output_poll_work, 0); | |
eb1f8e4f DA |
973 | } |
974 | EXPORT_SYMBOL(drm_helper_hpd_irq_event); |