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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 | ||
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" | |
308e5bcb | 37 | #include "drm_fourcc.h" |
f453ba04 | 38 | #include "drm_crtc_helper.h" |
d50ba256 | 39 | #include "drm_fb_helper.h" |
f453ba04 | 40 | |
e58f637b CW |
41 | static bool drm_kms_helper_poll = true; |
42 | module_param_named(poll, drm_kms_helper_poll, bool, 0600); | |
43 | ||
6714977b | 44 | static void drm_mode_validate_flag(struct drm_connector *connector, |
45 | int flags) | |
46 | { | |
a1178ca0 | 47 | struct drm_display_mode *mode; |
6714977b | 48 | |
49 | if (flags == (DRM_MODE_FLAG_DBLSCAN | DRM_MODE_FLAG_INTERLACE)) | |
50 | return; | |
51 | ||
a1178ca0 | 52 | list_for_each_entry(mode, &connector->modes, head) { |
6714977b | 53 | if ((mode->flags & DRM_MODE_FLAG_INTERLACE) && |
54 | !(flags & DRM_MODE_FLAG_INTERLACE)) | |
55 | mode->status = MODE_NO_INTERLACE; | |
56 | if ((mode->flags & DRM_MODE_FLAG_DBLSCAN) && | |
57 | !(flags & DRM_MODE_FLAG_DBLSCAN)) | |
58 | mode->status = MODE_NO_DBLESCAN; | |
59 | } | |
60 | ||
61 | return; | |
62 | } | |
63 | ||
f453ba04 | 64 | /** |
38651674 | 65 | * drm_helper_probe_single_connector_modes - get complete set of display modes |
f453ba04 DA |
66 | * @dev: DRM device |
67 | * @maxX: max width for modes | |
68 | * @maxY: max height for modes | |
69 | * | |
70 | * LOCKING: | |
71 | * Caller must hold mode config lock. | |
72 | * | |
73 | * Based on @dev's mode_config layout, scan all the connectors and try to detect | |
74 | * modes on them. Modes will first be added to the connector's probed_modes | |
75 | * list, then culled (based on validity and the @maxX, @maxY parameters) and | |
76 | * put into the normal modes list. | |
77 | * | |
78 | * Intended to be used either at bootup time or when major configuration | |
79 | * changes have occurred. | |
80 | * | |
81 | * FIXME: take into account monitor limits | |
40a518d9 JB |
82 | * |
83 | * RETURNS: | |
84 | * Number of modes found on @connector. | |
f453ba04 | 85 | */ |
40a518d9 JB |
86 | int drm_helper_probe_single_connector_modes(struct drm_connector *connector, |
87 | uint32_t maxX, uint32_t maxY) | |
f453ba04 DA |
88 | { |
89 | struct drm_device *dev = connector->dev; | |
a1178ca0 | 90 | struct drm_display_mode *mode; |
f453ba04 DA |
91 | struct drm_connector_helper_funcs *connector_funcs = |
92 | connector->helper_private; | |
40a518d9 | 93 | int count = 0; |
6714977b | 94 | int mode_flags = 0; |
f453ba04 | 95 | |
9440106b JG |
96 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", connector->base.id, |
97 | drm_get_connector_name(connector)); | |
f453ba04 | 98 | /* set all modes to the unverified state */ |
a1178ca0 | 99 | list_for_each_entry(mode, &connector->modes, head) |
f453ba04 DA |
100 | mode->status = MODE_UNVERIFIED; |
101 | ||
d50ba256 DA |
102 | if (connector->force) { |
103 | if (connector->force == DRM_FORCE_ON) | |
104 | connector->status = connector_status_connected; | |
105 | else | |
106 | connector->status = connector_status_disconnected; | |
107 | if (connector->funcs->force) | |
108 | connector->funcs->force(connector); | |
e58f637b | 109 | } else { |
930a9e28 | 110 | connector->status = connector->funcs->detect(connector, true); |
551402a3 | 111 | drm_kms_helper_poll_enable(dev); |
e58f637b | 112 | } |
f453ba04 DA |
113 | |
114 | if (connector->status == connector_status_disconnected) { | |
9440106b JG |
115 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] disconnected\n", |
116 | connector->base.id, drm_get_connector_name(connector)); | |
72539832 | 117 | drm_mode_connector_update_edid_property(connector, NULL); |
620f3781 | 118 | goto prune; |
f453ba04 DA |
119 | } |
120 | ||
40a518d9 | 121 | count = (*connector_funcs->get_modes)(connector); |
c7ef35a9 | 122 | if (count == 0 && connector->status == connector_status_connected) |
9632b41f | 123 | count = drm_add_modes_noedid(connector, 1024, 768); |
c7ef35a9 CW |
124 | if (count == 0) |
125 | goto prune; | |
f453ba04 | 126 | |
40a518d9 | 127 | drm_mode_connector_list_update(connector); |
f453ba04 DA |
128 | |
129 | if (maxX && maxY) | |
130 | drm_mode_validate_size(dev, &connector->modes, maxX, | |
131 | maxY, 0); | |
6714977b | 132 | |
133 | if (connector->interlace_allowed) | |
134 | mode_flags |= DRM_MODE_FLAG_INTERLACE; | |
135 | if (connector->doublescan_allowed) | |
136 | mode_flags |= DRM_MODE_FLAG_DBLSCAN; | |
137 | drm_mode_validate_flag(connector, mode_flags); | |
138 | ||
a1178ca0 | 139 | list_for_each_entry(mode, &connector->modes, head) { |
f453ba04 DA |
140 | if (mode->status == MODE_OK) |
141 | mode->status = connector_funcs->mode_valid(connector, | |
142 | mode); | |
143 | } | |
144 | ||
620f3781 | 145 | prune: |
f453ba04 DA |
146 | drm_mode_prune_invalid(dev, &connector->modes, true); |
147 | ||
40a518d9 JB |
148 | if (list_empty(&connector->modes)) |
149 | return 0; | |
f453ba04 DA |
150 | |
151 | drm_mode_sort(&connector->modes); | |
152 | ||
9440106b JG |
153 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] probed modes :\n", connector->base.id, |
154 | drm_get_connector_name(connector)); | |
a1178ca0 | 155 | list_for_each_entry(mode, &connector->modes, head) { |
f453ba04 DA |
156 | mode->vrefresh = drm_mode_vrefresh(mode); |
157 | ||
158 | drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V); | |
159 | drm_mode_debug_printmodeline(mode); | |
160 | } | |
40a518d9 JB |
161 | |
162 | return count; | |
f453ba04 DA |
163 | } |
164 | EXPORT_SYMBOL(drm_helper_probe_single_connector_modes); | |
165 | ||
c9fb15f6 KP |
166 | /** |
167 | * drm_helper_encoder_in_use - check if a given encoder is in use | |
168 | * @encoder: encoder to check | |
169 | * | |
170 | * LOCKING: | |
171 | * Caller must hold mode config lock. | |
172 | * | |
173 | * Walk @encoders's DRM device's mode_config and see if it's in use. | |
174 | * | |
175 | * RETURNS: | |
176 | * True if @encoder is part of the mode_config, false otherwise. | |
177 | */ | |
178 | bool drm_helper_encoder_in_use(struct drm_encoder *encoder) | |
179 | { | |
180 | struct drm_connector *connector; | |
181 | struct drm_device *dev = encoder->dev; | |
182 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) | |
183 | if (connector->encoder == encoder) | |
184 | return true; | |
185 | return false; | |
186 | } | |
187 | EXPORT_SYMBOL(drm_helper_encoder_in_use); | |
188 | ||
f453ba04 DA |
189 | /** |
190 | * drm_helper_crtc_in_use - check if a given CRTC is in a mode_config | |
191 | * @crtc: CRTC to check | |
192 | * | |
193 | * LOCKING: | |
194 | * Caller must hold mode config lock. | |
195 | * | |
196 | * Walk @crtc's DRM device's mode_config and see if it's in use. | |
197 | * | |
198 | * RETURNS: | |
199 | * True if @crtc is part of the mode_config, false otherwise. | |
200 | */ | |
201 | bool drm_helper_crtc_in_use(struct drm_crtc *crtc) | |
202 | { | |
203 | struct drm_encoder *encoder; | |
204 | struct drm_device *dev = crtc->dev; | |
205 | /* FIXME: Locking around list access? */ | |
206 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) | |
c9fb15f6 | 207 | if (encoder->crtc == crtc && drm_helper_encoder_in_use(encoder)) |
f453ba04 DA |
208 | return true; |
209 | return false; | |
210 | } | |
211 | EXPORT_SYMBOL(drm_helper_crtc_in_use); | |
212 | ||
86a1b9d1 BS |
213 | static void |
214 | drm_encoder_disable(struct drm_encoder *encoder) | |
215 | { | |
216 | struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; | |
217 | ||
218 | if (encoder_funcs->disable) | |
219 | (*encoder_funcs->disable)(encoder); | |
220 | else | |
221 | (*encoder_funcs->dpms)(encoder, DRM_MODE_DPMS_OFF); | |
222 | } | |
223 | ||
f453ba04 | 224 | /** |
89347bb8 | 225 | * drm_helper_disable_unused_functions - disable unused objects |
f453ba04 DA |
226 | * @dev: DRM device |
227 | * | |
228 | * LOCKING: | |
229 | * Caller must hold mode config lock. | |
230 | * | |
231 | * If an connector or CRTC isn't part of @dev's mode_config, it can be disabled | |
232 | * by calling its dpms function, which should power it off. | |
233 | */ | |
234 | void drm_helper_disable_unused_functions(struct drm_device *dev) | |
235 | { | |
236 | struct drm_encoder *encoder; | |
a3a0544b | 237 | struct drm_connector *connector; |
f453ba04 DA |
238 | struct drm_crtc *crtc; |
239 | ||
a3a0544b DA |
240 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
241 | if (!connector->encoder) | |
242 | continue; | |
243 | if (connector->status == connector_status_disconnected) | |
244 | connector->encoder = NULL; | |
245 | } | |
246 | ||
f453ba04 | 247 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
92971021 | 248 | if (!drm_helper_encoder_in_use(encoder)) { |
86a1b9d1 | 249 | drm_encoder_disable(encoder); |
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) { | |
5c8d7171 AD |
259 | if (crtc_funcs->disable) |
260 | (*crtc_funcs->disable)(crtc); | |
261 | else | |
262 | (*crtc_funcs->dpms)(crtc, DRM_MODE_DPMS_OFF); | |
f453ba04 DA |
263 | crtc->fb = NULL; |
264 | } | |
265 | } | |
266 | } | |
267 | EXPORT_SYMBOL(drm_helper_disable_unused_functions); | |
268 | ||
7bec756c JB |
269 | /** |
270 | * drm_encoder_crtc_ok - can a given crtc drive a given encoder? | |
271 | * @encoder: encoder to test | |
272 | * @crtc: crtc to test | |
273 | * | |
274 | * Return false if @encoder can't be driven by @crtc, true otherwise. | |
275 | */ | |
276 | static bool drm_encoder_crtc_ok(struct drm_encoder *encoder, | |
277 | struct drm_crtc *crtc) | |
278 | { | |
279 | struct drm_device *dev; | |
280 | struct drm_crtc *tmp; | |
281 | int crtc_mask = 1; | |
282 | ||
fce7d61b | 283 | WARN(!crtc, "checking null crtc?\n"); |
7bec756c JB |
284 | |
285 | dev = crtc->dev; | |
286 | ||
287 | list_for_each_entry(tmp, &dev->mode_config.crtc_list, head) { | |
288 | if (tmp == crtc) | |
289 | break; | |
290 | crtc_mask <<= 1; | |
291 | } | |
292 | ||
293 | if (encoder->possible_crtcs & crtc_mask) | |
294 | return true; | |
295 | return false; | |
296 | } | |
297 | ||
298 | /* | |
299 | * Check the CRTC we're going to map each output to vs. its current | |
300 | * CRTC. If they don't match, we have to disable the output and the CRTC | |
301 | * since the driver will have to re-route things. | |
302 | */ | |
303 | static void | |
304 | drm_crtc_prepare_encoders(struct drm_device *dev) | |
305 | { | |
306 | struct drm_encoder_helper_funcs *encoder_funcs; | |
307 | struct drm_encoder *encoder; | |
308 | ||
309 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
310 | encoder_funcs = encoder->helper_private; | |
311 | /* Disable unused encoders */ | |
312 | if (encoder->crtc == NULL) | |
86a1b9d1 | 313 | drm_encoder_disable(encoder); |
7bec756c JB |
314 | /* Disable encoders whose CRTC is about to change */ |
315 | if (encoder_funcs->get_crtc && | |
316 | encoder->crtc != (*encoder_funcs->get_crtc)(encoder)) | |
86a1b9d1 | 317 | drm_encoder_disable(encoder); |
7bec756c JB |
318 | } |
319 | } | |
320 | ||
f453ba04 DA |
321 | /** |
322 | * drm_crtc_set_mode - set a mode | |
323 | * @crtc: CRTC to program | |
324 | * @mode: mode to use | |
325 | * @x: width of mode | |
326 | * @y: height of mode | |
327 | * | |
328 | * LOCKING: | |
329 | * Caller must hold mode config lock. | |
330 | * | |
331 | * Try to set @mode on @crtc. Give @crtc and its associated connectors a chance | |
332 | * to fixup or reject the mode prior to trying to set it. | |
333 | * | |
334 | * RETURNS: | |
335 | * True if the mode was set successfully, or false otherwise. | |
336 | */ | |
337 | bool drm_crtc_helper_set_mode(struct drm_crtc *crtc, | |
338 | struct drm_display_mode *mode, | |
3c4fdcfb KH |
339 | int x, int y, |
340 | struct drm_framebuffer *old_fb) | |
f453ba04 DA |
341 | { |
342 | struct drm_device *dev = crtc->dev; | |
27641c3f | 343 | struct drm_display_mode *adjusted_mode, saved_mode, saved_hwmode; |
f453ba04 DA |
344 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
345 | struct drm_encoder_helper_funcs *encoder_funcs; | |
346 | int saved_x, saved_y; | |
347 | struct drm_encoder *encoder; | |
348 | bool ret = true; | |
349 | ||
f453ba04 | 350 | crtc->enabled = drm_helper_crtc_in_use(crtc); |
f453ba04 DA |
351 | if (!crtc->enabled) |
352 | return true; | |
353 | ||
021a8455 | 354 | adjusted_mode = drm_mode_duplicate(dev, mode); |
6bfc56aa VS |
355 | if (!adjusted_mode) |
356 | return false; | |
021a8455 | 357 | |
27641c3f | 358 | saved_hwmode = crtc->hwmode; |
f453ba04 DA |
359 | saved_mode = crtc->mode; |
360 | saved_x = crtc->x; | |
361 | saved_y = crtc->y; | |
362 | ||
363 | /* Update crtc values up front so the driver can rely on them for mode | |
364 | * setting. | |
365 | */ | |
366 | crtc->mode = *mode; | |
367 | crtc->x = x; | |
368 | crtc->y = y; | |
369 | ||
f453ba04 DA |
370 | /* Pass our mode to the connectors and the CRTC to give them a chance to |
371 | * adjust it according to limitations or connector properties, and also | |
372 | * a chance to reject the mode entirely. | |
373 | */ | |
374 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
375 | ||
376 | if (encoder->crtc != crtc) | |
377 | continue; | |
378 | encoder_funcs = encoder->helper_private; | |
379 | if (!(ret = encoder_funcs->mode_fixup(encoder, mode, | |
380 | adjusted_mode))) { | |
836e53d7 | 381 | DRM_DEBUG_KMS("Encoder fixup failed\n"); |
f453ba04 DA |
382 | goto done; |
383 | } | |
384 | } | |
385 | ||
386 | if (!(ret = crtc_funcs->mode_fixup(crtc, mode, adjusted_mode))) { | |
836e53d7 | 387 | DRM_DEBUG_KMS("CRTC fixup failed\n"); |
f453ba04 DA |
388 | goto done; |
389 | } | |
9440106b | 390 | DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id); |
f453ba04 DA |
391 | |
392 | /* Prepare the encoders and CRTCs before setting the mode. */ | |
393 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
394 | ||
395 | if (encoder->crtc != crtc) | |
396 | continue; | |
397 | encoder_funcs = encoder->helper_private; | |
398 | /* Disable the encoders as the first thing we do. */ | |
399 | encoder_funcs->prepare(encoder); | |
400 | } | |
401 | ||
7bec756c JB |
402 | drm_crtc_prepare_encoders(dev); |
403 | ||
f453ba04 DA |
404 | crtc_funcs->prepare(crtc); |
405 | ||
406 | /* Set up the DPLL and any encoders state that needs to adjust or depend | |
407 | * on the DPLL. | |
408 | */ | |
5c3b82e2 CW |
409 | ret = !crtc_funcs->mode_set(crtc, mode, adjusted_mode, x, y, old_fb); |
410 | if (!ret) | |
411 | goto done; | |
f453ba04 DA |
412 | |
413 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
414 | ||
415 | if (encoder->crtc != crtc) | |
416 | continue; | |
417 | ||
9440106b JG |
418 | DRM_DEBUG_KMS("[ENCODER:%d:%s] set [MODE:%d:%s]\n", |
419 | encoder->base.id, drm_get_encoder_name(encoder), | |
420 | mode->base.id, mode->name); | |
f453ba04 DA |
421 | encoder_funcs = encoder->helper_private; |
422 | encoder_funcs->mode_set(encoder, mode, adjusted_mode); | |
423 | } | |
424 | ||
425 | /* Now enable the clocks, plane, pipe, and connectors that we set up. */ | |
426 | crtc_funcs->commit(crtc); | |
427 | ||
428 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
429 | ||
430 | if (encoder->crtc != crtc) | |
431 | continue; | |
432 | ||
433 | encoder_funcs = encoder->helper_private; | |
434 | encoder_funcs->commit(encoder); | |
435 | ||
436 | } | |
437 | ||
27641c3f MK |
438 | /* Store real post-adjustment hardware mode. */ |
439 | crtc->hwmode = *adjusted_mode; | |
440 | ||
441 | /* Calculate and store various constants which | |
442 | * are later needed by vblank and swap-completion | |
443 | * timestamping. They are derived from true hwmode. | |
444 | */ | |
445 | drm_calc_timestamping_constants(crtc); | |
446 | ||
f453ba04 DA |
447 | /* FIXME: add subpixel order */ |
448 | done: | |
021a8455 | 449 | drm_mode_destroy(dev, adjusted_mode); |
f453ba04 | 450 | if (!ret) { |
27641c3f | 451 | crtc->hwmode = saved_hwmode; |
f453ba04 DA |
452 | crtc->mode = saved_mode; |
453 | crtc->x = saved_x; | |
454 | crtc->y = saved_y; | |
455 | } | |
456 | ||
457 | return ret; | |
458 | } | |
459 | EXPORT_SYMBOL(drm_crtc_helper_set_mode); | |
460 | ||
461 | ||
6eebd6bb CW |
462 | static int |
463 | drm_crtc_helper_disable(struct drm_crtc *crtc) | |
464 | { | |
465 | struct drm_device *dev = crtc->dev; | |
466 | struct drm_connector *connector; | |
467 | struct drm_encoder *encoder; | |
468 | ||
469 | /* Decouple all encoders and their attached connectors from this crtc */ | |
470 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
471 | if (encoder->crtc != crtc) | |
472 | continue; | |
473 | ||
474 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
475 | if (connector->encoder != encoder) | |
476 | continue; | |
477 | ||
478 | connector->encoder = NULL; | |
479 | } | |
480 | } | |
481 | ||
482 | drm_helper_disable_unused_functions(dev); | |
483 | return 0; | |
484 | } | |
485 | ||
f453ba04 DA |
486 | /** |
487 | * drm_crtc_helper_set_config - set a new config from userspace | |
488 | * @crtc: CRTC to setup | |
489 | * @crtc_info: user provided configuration | |
490 | * @new_mode: new mode to set | |
491 | * @connector_set: set of connectors for the new config | |
492 | * @fb: new framebuffer | |
493 | * | |
494 | * LOCKING: | |
495 | * Caller must hold mode config lock. | |
496 | * | |
497 | * Setup a new configuration, provided by the user in @crtc_info, and enable | |
498 | * it. | |
499 | * | |
500 | * RETURNS: | |
501 | * Zero. (FIXME) | |
502 | */ | |
503 | int drm_crtc_helper_set_config(struct drm_mode_set *set) | |
504 | { | |
505 | struct drm_device *dev; | |
e67aae79 MM |
506 | struct drm_crtc *save_crtcs, *new_crtc, *crtc; |
507 | struct drm_encoder *save_encoders, *new_encoder, *encoder; | |
7bec756c | 508 | struct drm_framebuffer *old_fb = NULL; |
4cb72b17 JB |
509 | bool mode_changed = false; /* if true do a full mode set */ |
510 | bool fb_changed = false; /* if true and !mode_changed just do a flip */ | |
e67aae79 | 511 | struct drm_connector *save_connectors, *connector; |
f453ba04 DA |
512 | int count = 0, ro, fail = 0; |
513 | struct drm_crtc_helper_funcs *crtc_funcs; | |
c5006cfe | 514 | struct drm_mode_set save_set; |
f453ba04 | 515 | int ret = 0; |
bf9dc102 | 516 | int i; |
f453ba04 | 517 | |
58367ed6 | 518 | DRM_DEBUG_KMS("\n"); |
f453ba04 DA |
519 | |
520 | if (!set) | |
521 | return -EINVAL; | |
522 | ||
523 | if (!set->crtc) | |
524 | return -EINVAL; | |
525 | ||
526 | if (!set->crtc->helper_private) | |
527 | return -EINVAL; | |
528 | ||
529 | crtc_funcs = set->crtc->helper_private; | |
530 | ||
ede3ff52 CW |
531 | if (!set->mode) |
532 | set->fb = NULL; | |
533 | ||
9440106b JG |
534 | if (set->fb) { |
535 | DRM_DEBUG_KMS("[CRTC:%d] [FB:%d] #connectors=%d (x y) (%i %i)\n", | |
536 | set->crtc->base.id, set->fb->base.id, | |
537 | (int)set->num_connectors, set->x, set->y); | |
538 | } else { | |
ede3ff52 | 539 | DRM_DEBUG_KMS("[CRTC:%d] [NOFB]\n", set->crtc->base.id); |
6eebd6bb | 540 | return drm_crtc_helper_disable(set->crtc); |
9440106b | 541 | } |
f453ba04 DA |
542 | |
543 | dev = set->crtc->dev; | |
544 | ||
e67aae79 MM |
545 | /* Allocate space for the backup of all (non-pointer) crtc, encoder and |
546 | * connector data. */ | |
547 | save_crtcs = kzalloc(dev->mode_config.num_crtc * | |
548 | sizeof(struct drm_crtc), GFP_KERNEL); | |
f453ba04 DA |
549 | if (!save_crtcs) |
550 | return -ENOMEM; | |
551 | ||
e67aae79 MM |
552 | save_encoders = kzalloc(dev->mode_config.num_encoder * |
553 | sizeof(struct drm_encoder), GFP_KERNEL); | |
f453ba04 DA |
554 | if (!save_encoders) { |
555 | kfree(save_crtcs); | |
556 | return -ENOMEM; | |
557 | } | |
558 | ||
e67aae79 MM |
559 | save_connectors = kzalloc(dev->mode_config.num_connector * |
560 | sizeof(struct drm_connector), GFP_KERNEL); | |
561 | if (!save_connectors) { | |
562 | kfree(save_crtcs); | |
563 | kfree(save_encoders); | |
564 | return -ENOMEM; | |
565 | } | |
566 | ||
567 | /* Copy data. Note that driver private data is not affected. | |
568 | * Should anything bad happen only the expected state is | |
569 | * restored, not the drivers personal bookkeeping. | |
570 | */ | |
571 | count = 0; | |
572 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
573 | save_crtcs[count++] = *crtc; | |
574 | } | |
575 | ||
576 | count = 0; | |
577 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
578 | save_encoders[count++] = *encoder; | |
579 | } | |
580 | ||
581 | count = 0; | |
582 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
583 | save_connectors[count++] = *connector; | |
584 | } | |
585 | ||
c5006cfe JB |
586 | save_set.crtc = set->crtc; |
587 | save_set.mode = &set->crtc->mode; | |
588 | save_set.x = set->crtc->x; | |
589 | save_set.y = set->crtc->y; | |
590 | save_set.fb = set->crtc->fb; | |
591 | ||
f453ba04 DA |
592 | /* We should be able to check here if the fb has the same properties |
593 | * and then just flip_or_move it */ | |
594 | if (set->crtc->fb != set->fb) { | |
712531bf | 595 | /* If we have no fb then treat it as a full mode set */ |
7bec756c | 596 | if (set->crtc->fb == NULL) { |
58367ed6 | 597 | DRM_DEBUG_KMS("crtc has no fb, full mode set\n"); |
712531bf | 598 | mode_changed = true; |
4cb72b17 JB |
599 | } else if (set->fb == NULL) { |
600 | mode_changed = true; | |
46e48456 JB |
601 | } else if (set->fb->depth != set->crtc->fb->depth) { |
602 | mode_changed = true; | |
603 | } else if (set->fb->bits_per_pixel != | |
604 | set->crtc->fb->bits_per_pixel) { | |
605 | mode_changed = true; | |
8dff4742 | 606 | } else |
712531bf | 607 | fb_changed = true; |
f453ba04 DA |
608 | } |
609 | ||
610 | if (set->x != set->crtc->x || set->y != set->crtc->y) | |
712531bf | 611 | fb_changed = true; |
f453ba04 DA |
612 | |
613 | if (set->mode && !drm_mode_equal(set->mode, &set->crtc->mode)) { | |
58367ed6 | 614 | DRM_DEBUG_KMS("modes are different, full mode set\n"); |
f453ba04 DA |
615 | drm_mode_debug_printmodeline(&set->crtc->mode); |
616 | drm_mode_debug_printmodeline(set->mode); | |
712531bf | 617 | mode_changed = true; |
f453ba04 DA |
618 | } |
619 | ||
620 | /* a) traverse passed in connector list and get encoders for them */ | |
621 | count = 0; | |
622 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
623 | struct drm_connector_helper_funcs *connector_funcs = | |
624 | connector->helper_private; | |
f453ba04 DA |
625 | new_encoder = connector->encoder; |
626 | for (ro = 0; ro < set->num_connectors; ro++) { | |
627 | if (set->connectors[ro] == connector) { | |
628 | new_encoder = connector_funcs->best_encoder(connector); | |
629 | /* if we can't get an encoder for a connector | |
630 | we are setting now - then fail */ | |
631 | if (new_encoder == NULL) | |
632 | /* don't break so fail path works correct */ | |
633 | fail = 1; | |
634 | break; | |
635 | } | |
636 | } | |
637 | ||
638 | if (new_encoder != connector->encoder) { | |
58367ed6 | 639 | DRM_DEBUG_KMS("encoder changed, full mode switch\n"); |
712531bf | 640 | mode_changed = true; |
ff846ab7 MM |
641 | /* If the encoder is reused for another connector, then |
642 | * the appropriate crtc will be set later. | |
643 | */ | |
ff6fdbed MM |
644 | if (connector->encoder) |
645 | connector->encoder->crtc = NULL; | |
f453ba04 DA |
646 | connector->encoder = new_encoder; |
647 | } | |
648 | } | |
649 | ||
650 | if (fail) { | |
651 | ret = -EINVAL; | |
e67aae79 | 652 | goto fail; |
f453ba04 DA |
653 | } |
654 | ||
655 | count = 0; | |
656 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
657 | if (!connector->encoder) | |
658 | continue; | |
659 | ||
f453ba04 DA |
660 | if (connector->encoder->crtc == set->crtc) |
661 | new_crtc = NULL; | |
662 | else | |
663 | new_crtc = connector->encoder->crtc; | |
664 | ||
665 | for (ro = 0; ro < set->num_connectors; ro++) { | |
666 | if (set->connectors[ro] == connector) | |
667 | new_crtc = set->crtc; | |
668 | } | |
7bec756c JB |
669 | |
670 | /* Make sure the new CRTC will work with the encoder */ | |
671 | if (new_crtc && | |
672 | !drm_encoder_crtc_ok(connector->encoder, new_crtc)) { | |
673 | ret = -EINVAL; | |
e67aae79 | 674 | goto fail; |
7bec756c | 675 | } |
f453ba04 | 676 | if (new_crtc != connector->encoder->crtc) { |
58367ed6 | 677 | DRM_DEBUG_KMS("crtc changed, full mode switch\n"); |
712531bf | 678 | mode_changed = true; |
f453ba04 DA |
679 | connector->encoder->crtc = new_crtc; |
680 | } | |
9440106b JG |
681 | if (new_crtc) { |
682 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] to [CRTC:%d]\n", | |
683 | connector->base.id, drm_get_connector_name(connector), | |
684 | new_crtc->base.id); | |
685 | } else { | |
686 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] to [NOCRTC]\n", | |
687 | connector->base.id, drm_get_connector_name(connector)); | |
688 | } | |
f453ba04 DA |
689 | } |
690 | ||
691 | /* mode_set_base is not a required function */ | |
712531bf JB |
692 | if (fb_changed && !crtc_funcs->mode_set_base) |
693 | mode_changed = true; | |
f453ba04 | 694 | |
712531bf | 695 | if (mode_changed) { |
9334ef75 CW |
696 | set->crtc->enabled = drm_helper_crtc_in_use(set->crtc); |
697 | if (set->crtc->enabled) { | |
58367ed6 ZY |
698 | DRM_DEBUG_KMS("attempting to set mode from" |
699 | " userspace\n"); | |
f453ba04 | 700 | drm_mode_debug_printmodeline(set->mode); |
356ad3cd CW |
701 | old_fb = set->crtc->fb; |
702 | set->crtc->fb = set->fb; | |
f453ba04 | 703 | if (!drm_crtc_helper_set_mode(set->crtc, set->mode, |
3c4fdcfb KH |
704 | set->x, set->y, |
705 | old_fb)) { | |
9440106b JG |
706 | DRM_ERROR("failed to set mode on [CRTC:%d]\n", |
707 | set->crtc->base.id); | |
0ba41e44 | 708 | set->crtc->fb = old_fb; |
f453ba04 | 709 | ret = -EINVAL; |
e67aae79 | 710 | goto fail; |
f453ba04 | 711 | } |
811aaa55 KP |
712 | DRM_DEBUG_KMS("Setting connector DPMS state to on\n"); |
713 | for (i = 0; i < set->num_connectors; i++) { | |
714 | DRM_DEBUG_KMS("\t[CONNECTOR:%d:%s] set DPMS on\n", set->connectors[i]->base.id, | |
715 | drm_get_connector_name(set->connectors[i])); | |
c7548837 | 716 | set->connectors[i]->funcs->dpms(set->connectors[i], DRM_MODE_DPMS_ON); |
811aaa55 | 717 | } |
f453ba04 DA |
718 | } |
719 | drm_helper_disable_unused_functions(dev); | |
712531bf | 720 | } else if (fb_changed) { |
9b1596af BS |
721 | set->crtc->x = set->x; |
722 | set->crtc->y = set->y; | |
723 | ||
3c4fdcfb | 724 | old_fb = set->crtc->fb; |
f453ba04 DA |
725 | if (set->crtc->fb != set->fb) |
726 | set->crtc->fb = set->fb; | |
5c3b82e2 CW |
727 | ret = crtc_funcs->mode_set_base(set->crtc, |
728 | set->x, set->y, old_fb); | |
0ba41e44 CW |
729 | if (ret != 0) { |
730 | set->crtc->fb = old_fb; | |
e67aae79 | 731 | goto fail; |
0ba41e44 | 732 | } |
f453ba04 DA |
733 | } |
734 | ||
e67aae79 | 735 | kfree(save_connectors); |
f453ba04 DA |
736 | kfree(save_encoders); |
737 | kfree(save_crtcs); | |
738 | return 0; | |
739 | ||
e67aae79 MM |
740 | fail: |
741 | /* Restore all previous data. */ | |
f453ba04 | 742 | count = 0; |
e67aae79 MM |
743 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
744 | *crtc = save_crtcs[count++]; | |
745 | } | |
e62fb64e | 746 | |
e67aae79 MM |
747 | count = 0; |
748 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
749 | *encoder = save_encoders[count++]; | |
e62fb64e | 750 | } |
e67aae79 | 751 | |
f453ba04 DA |
752 | count = 0; |
753 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
e67aae79 | 754 | *connector = save_connectors[count++]; |
f453ba04 | 755 | } |
e67aae79 | 756 | |
c5006cfe JB |
757 | /* Try to restore the config */ |
758 | if (mode_changed && | |
759 | !drm_crtc_helper_set_mode(save_set.crtc, save_set.mode, save_set.x, | |
760 | save_set.y, save_set.fb)) | |
761 | DRM_ERROR("failed to restore config after modeset failure\n"); | |
762 | ||
e67aae79 | 763 | kfree(save_connectors); |
f453ba04 | 764 | kfree(save_encoders); |
e67aae79 | 765 | kfree(save_crtcs); |
f453ba04 DA |
766 | return ret; |
767 | } | |
768 | EXPORT_SYMBOL(drm_crtc_helper_set_config); | |
769 | ||
c9fb15f6 KP |
770 | static int drm_helper_choose_encoder_dpms(struct drm_encoder *encoder) |
771 | { | |
772 | int dpms = DRM_MODE_DPMS_OFF; | |
773 | struct drm_connector *connector; | |
774 | struct drm_device *dev = encoder->dev; | |
775 | ||
776 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) | |
777 | if (connector->encoder == encoder) | |
778 | if (connector->dpms < dpms) | |
779 | dpms = connector->dpms; | |
780 | return dpms; | |
781 | } | |
782 | ||
783 | static int drm_helper_choose_crtc_dpms(struct drm_crtc *crtc) | |
784 | { | |
785 | int dpms = DRM_MODE_DPMS_OFF; | |
786 | struct drm_connector *connector; | |
787 | struct drm_device *dev = crtc->dev; | |
788 | ||
789 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) | |
790 | if (connector->encoder && connector->encoder->crtc == crtc) | |
791 | if (connector->dpms < dpms) | |
792 | dpms = connector->dpms; | |
793 | return dpms; | |
794 | } | |
795 | ||
796 | /** | |
797 | * drm_helper_connector_dpms | |
798 | * @connector affected connector | |
799 | * @mode DPMS mode | |
800 | * | |
801 | * Calls the low-level connector DPMS function, then | |
802 | * calls appropriate encoder and crtc DPMS functions as well | |
803 | */ | |
804 | void drm_helper_connector_dpms(struct drm_connector *connector, int mode) | |
805 | { | |
806 | struct drm_encoder *encoder = connector->encoder; | |
807 | struct drm_crtc *crtc = encoder ? encoder->crtc : NULL; | |
808 | int old_dpms; | |
809 | ||
810 | if (mode == connector->dpms) | |
811 | return; | |
812 | ||
813 | old_dpms = connector->dpms; | |
814 | connector->dpms = mode; | |
815 | ||
816 | /* from off to on, do crtc then encoder */ | |
817 | if (mode < old_dpms) { | |
818 | if (crtc) { | |
819 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; | |
820 | if (crtc_funcs->dpms) | |
821 | (*crtc_funcs->dpms) (crtc, | |
822 | drm_helper_choose_crtc_dpms(crtc)); | |
823 | } | |
824 | if (encoder) { | |
825 | struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; | |
826 | if (encoder_funcs->dpms) | |
827 | (*encoder_funcs->dpms) (encoder, | |
828 | drm_helper_choose_encoder_dpms(encoder)); | |
829 | } | |
830 | } | |
831 | ||
832 | /* from on to off, do encoder then crtc */ | |
833 | if (mode > old_dpms) { | |
834 | if (encoder) { | |
835 | struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; | |
836 | if (encoder_funcs->dpms) | |
837 | (*encoder_funcs->dpms) (encoder, | |
838 | drm_helper_choose_encoder_dpms(encoder)); | |
839 | } | |
840 | if (crtc) { | |
841 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; | |
842 | if (crtc_funcs->dpms) | |
843 | (*crtc_funcs->dpms) (crtc, | |
844 | drm_helper_choose_crtc_dpms(crtc)); | |
845 | } | |
846 | } | |
847 | ||
848 | return; | |
849 | } | |
850 | EXPORT_SYMBOL(drm_helper_connector_dpms); | |
851 | ||
f453ba04 | 852 | int drm_helper_mode_fill_fb_struct(struct drm_framebuffer *fb, |
308e5bcb | 853 | struct drm_mode_fb_cmd2 *mode_cmd) |
f453ba04 | 854 | { |
01f2c773 VS |
855 | int i; |
856 | ||
f453ba04 DA |
857 | fb->width = mode_cmd->width; |
858 | fb->height = mode_cmd->height; | |
01f2c773 VS |
859 | for (i = 0; i < 4; i++) { |
860 | fb->pitches[i] = mode_cmd->pitches[i]; | |
861 | fb->offsets[i] = mode_cmd->offsets[i]; | |
862 | } | |
248dbc23 | 863 | drm_fb_get_bpp_depth(mode_cmd->pixel_format, &fb->depth, |
308e5bcb JB |
864 | &fb->bits_per_pixel); |
865 | fb->pixel_format = mode_cmd->pixel_format; | |
f453ba04 DA |
866 | |
867 | return 0; | |
868 | } | |
869 | EXPORT_SYMBOL(drm_helper_mode_fill_fb_struct); | |
870 | ||
871 | int drm_helper_resume_force_mode(struct drm_device *dev) | |
872 | { | |
873 | struct drm_crtc *crtc; | |
89347bb8 DJ |
874 | struct drm_encoder *encoder; |
875 | struct drm_encoder_helper_funcs *encoder_funcs; | |
876 | struct drm_crtc_helper_funcs *crtc_funcs; | |
f453ba04 DA |
877 | int ret; |
878 | ||
879 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
880 | ||
881 | if (!crtc->enabled) | |
882 | continue; | |
883 | ||
3c4fdcfb KH |
884 | ret = drm_crtc_helper_set_mode(crtc, &crtc->mode, |
885 | crtc->x, crtc->y, crtc->fb); | |
f453ba04 DA |
886 | |
887 | if (ret == false) | |
888 | DRM_ERROR("failed to set mode on crtc %p\n", crtc); | |
89347bb8 DJ |
889 | |
890 | /* Turn off outputs that were already powered off */ | |
891 | if (drm_helper_choose_crtc_dpms(crtc)) { | |
892 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
893 | ||
894 | if(encoder->crtc != crtc) | |
895 | continue; | |
896 | ||
897 | encoder_funcs = encoder->helper_private; | |
898 | if (encoder_funcs->dpms) | |
899 | (*encoder_funcs->dpms) (encoder, | |
900 | drm_helper_choose_encoder_dpms(encoder)); | |
89347bb8 | 901 | } |
817e631e CW |
902 | |
903 | crtc_funcs = crtc->helper_private; | |
904 | if (crtc_funcs->dpms) | |
905 | (*crtc_funcs->dpms) (crtc, | |
906 | drm_helper_choose_crtc_dpms(crtc)); | |
89347bb8 | 907 | } |
f453ba04 | 908 | } |
af4fcb57 ZY |
909 | /* disable the unused connectors while restoring the modesetting */ |
910 | drm_helper_disable_unused_functions(dev); | |
f453ba04 DA |
911 | return 0; |
912 | } | |
913 | EXPORT_SYMBOL(drm_helper_resume_force_mode); | |
eb1f8e4f | 914 | |
eb1f8e4f | 915 | #define DRM_OUTPUT_POLL_PERIOD (10*HZ) |
991ea75c | 916 | static void output_poll_execute(struct work_struct *work) |
eb1f8e4f | 917 | { |
991ea75c TH |
918 | struct delayed_work *delayed_work = to_delayed_work(work); |
919 | struct drm_device *dev = container_of(delayed_work, struct drm_device, mode_config.output_poll_work); | |
eb1f8e4f | 920 | struct drm_connector *connector; |
c5027dec | 921 | enum drm_connector_status old_status; |
eb1f8e4f | 922 | bool repoll = false, changed = false; |
eb1f8e4f | 923 | |
e58f637b CW |
924 | if (!drm_kms_helper_poll) |
925 | return; | |
926 | ||
eb1f8e4f DA |
927 | mutex_lock(&dev->mode_config.mutex); |
928 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
929 | ||
930 | /* if this is HPD or polled don't check it - | |
931 | TV out for instance */ | |
932 | if (!connector->polled) | |
933 | continue; | |
934 | ||
935 | else if (connector->polled & (DRM_CONNECTOR_POLL_CONNECT | DRM_CONNECTOR_POLL_DISCONNECT)) | |
936 | repoll = true; | |
937 | ||
938 | old_status = connector->status; | |
939 | /* if we are connected and don't want to poll for disconnect | |
940 | skip it */ | |
941 | if (old_status == connector_status_connected && | |
942 | !(connector->polled & DRM_CONNECTOR_POLL_DISCONNECT) && | |
943 | !(connector->polled & DRM_CONNECTOR_POLL_HPD)) | |
944 | continue; | |
945 | ||
c5027dec | 946 | connector->status = connector->funcs->detect(connector, false); |
0f16830e CW |
947 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] status updated from %d to %d\n", |
948 | connector->base.id, | |
949 | drm_get_connector_name(connector), | |
950 | old_status, connector->status); | |
c5027dec | 951 | if (old_status != connector->status) |
eb1f8e4f DA |
952 | changed = true; |
953 | } | |
954 | ||
955 | mutex_unlock(&dev->mode_config.mutex); | |
956 | ||
957 | if (changed) { | |
958 | /* send a uevent + call fbdev */ | |
959 | drm_sysfs_hotplug_event(dev); | |
960 | if (dev->mode_config.funcs->output_poll_changed) | |
961 | dev->mode_config.funcs->output_poll_changed(dev); | |
962 | } | |
963 | ||
9a919c46 TH |
964 | if (repoll) |
965 | queue_delayed_work(system_nrt_wq, delayed_work, DRM_OUTPUT_POLL_PERIOD); | |
eb1f8e4f DA |
966 | } |
967 | ||
fbf81762 DA |
968 | void drm_kms_helper_poll_disable(struct drm_device *dev) |
969 | { | |
970 | if (!dev->mode_config.poll_enabled) | |
971 | return; | |
991ea75c | 972 | cancel_delayed_work_sync(&dev->mode_config.output_poll_work); |
fbf81762 DA |
973 | } |
974 | EXPORT_SYMBOL(drm_kms_helper_poll_disable); | |
975 | ||
976 | void drm_kms_helper_poll_enable(struct drm_device *dev) | |
eb1f8e4f | 977 | { |
eb1f8e4f | 978 | bool poll = false; |
fbf81762 | 979 | struct drm_connector *connector; |
eb1f8e4f | 980 | |
e58f637b CW |
981 | if (!dev->mode_config.poll_enabled || !drm_kms_helper_poll) |
982 | return; | |
983 | ||
eb1f8e4f DA |
984 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
985 | if (connector->polled) | |
986 | poll = true; | |
987 | } | |
eb1f8e4f | 988 | |
9a919c46 TH |
989 | if (poll) |
990 | queue_delayed_work(system_nrt_wq, &dev->mode_config.output_poll_work, DRM_OUTPUT_POLL_PERIOD); | |
eb1f8e4f | 991 | } |
fbf81762 DA |
992 | EXPORT_SYMBOL(drm_kms_helper_poll_enable); |
993 | ||
994 | void drm_kms_helper_poll_init(struct drm_device *dev) | |
995 | { | |
991ea75c | 996 | INIT_DELAYED_WORK(&dev->mode_config.output_poll_work, output_poll_execute); |
fbf81762 DA |
997 | dev->mode_config.poll_enabled = true; |
998 | ||
999 | drm_kms_helper_poll_enable(dev); | |
1000 | } | |
eb1f8e4f DA |
1001 | EXPORT_SYMBOL(drm_kms_helper_poll_init); |
1002 | ||
1003 | void drm_kms_helper_poll_fini(struct drm_device *dev) | |
1004 | { | |
fbf81762 | 1005 | drm_kms_helper_poll_disable(dev); |
eb1f8e4f DA |
1006 | } |
1007 | EXPORT_SYMBOL(drm_kms_helper_poll_fini); | |
1008 | ||
1009 | void drm_helper_hpd_irq_event(struct drm_device *dev) | |
1010 | { | |
1011 | if (!dev->mode_config.poll_enabled) | |
1012 | return; | |
e58f637b | 1013 | |
991ea75c TH |
1014 | /* kill timer and schedule immediate execution, this doesn't block */ |
1015 | cancel_delayed_work(&dev->mode_config.output_poll_work); | |
e58f637b CW |
1016 | if (drm_kms_helper_poll) |
1017 | queue_delayed_work(system_nrt_wq, &dev->mode_config.output_poll_work, 0); | |
eb1f8e4f DA |
1018 | } |
1019 | EXPORT_SYMBOL(drm_helper_hpd_irq_event); | |
d0d110e0 VS |
1020 | |
1021 | ||
1022 | /** | |
1023 | * drm_format_num_planes - get the number of planes for format | |
1024 | * @format: pixel format (DRM_FORMAT_*) | |
1025 | * | |
1026 | * RETURNS: | |
1027 | * The number of planes used by the specified pixel format. | |
1028 | */ | |
1029 | int drm_format_num_planes(uint32_t format) | |
1030 | { | |
1031 | switch (format) { | |
1032 | case DRM_FORMAT_YUV410: | |
1033 | case DRM_FORMAT_YVU410: | |
1034 | case DRM_FORMAT_YUV411: | |
1035 | case DRM_FORMAT_YVU411: | |
1036 | case DRM_FORMAT_YUV420: | |
1037 | case DRM_FORMAT_YVU420: | |
1038 | case DRM_FORMAT_YUV422: | |
1039 | case DRM_FORMAT_YVU422: | |
1040 | case DRM_FORMAT_YUV444: | |
1041 | case DRM_FORMAT_YVU444: | |
1042 | return 3; | |
1043 | case DRM_FORMAT_NV12: | |
1044 | case DRM_FORMAT_NV21: | |
1045 | case DRM_FORMAT_NV16: | |
1046 | case DRM_FORMAT_NV61: | |
1047 | return 2; | |
1048 | default: | |
1049 | return 1; | |
1050 | } | |
1051 | } | |
1052 | EXPORT_SYMBOL(drm_format_num_planes); |