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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 PG |
32 | #include <linux/export.h> |
33 | ||
f453ba04 DA |
34 | #include "drmP.h" |
35 | #include "drm_crtc.h" | |
36 | #include "drm_crtc_helper.h" | |
d50ba256 | 37 | #include "drm_fb_helper.h" |
f453ba04 | 38 | |
e58f637b CW |
39 | static bool drm_kms_helper_poll = true; |
40 | module_param_named(poll, drm_kms_helper_poll, bool, 0600); | |
41 | ||
6714977b | 42 | static void drm_mode_validate_flag(struct drm_connector *connector, |
43 | int flags) | |
44 | { | |
45 | struct drm_display_mode *mode, *t; | |
46 | ||
47 | if (flags == (DRM_MODE_FLAG_DBLSCAN | DRM_MODE_FLAG_INTERLACE)) | |
48 | return; | |
49 | ||
50 | list_for_each_entry_safe(mode, t, &connector->modes, head) { | |
51 | if ((mode->flags & DRM_MODE_FLAG_INTERLACE) && | |
52 | !(flags & DRM_MODE_FLAG_INTERLACE)) | |
53 | mode->status = MODE_NO_INTERLACE; | |
54 | if ((mode->flags & DRM_MODE_FLAG_DBLSCAN) && | |
55 | !(flags & DRM_MODE_FLAG_DBLSCAN)) | |
56 | mode->status = MODE_NO_DBLESCAN; | |
57 | } | |
58 | ||
59 | return; | |
60 | } | |
61 | ||
f453ba04 | 62 | /** |
38651674 | 63 | * drm_helper_probe_single_connector_modes - get complete set of display modes |
f453ba04 DA |
64 | * @dev: DRM device |
65 | * @maxX: max width for modes | |
66 | * @maxY: max height for modes | |
67 | * | |
68 | * LOCKING: | |
69 | * Caller must hold mode config lock. | |
70 | * | |
71 | * Based on @dev's mode_config layout, scan all the connectors and try to detect | |
72 | * modes on them. Modes will first be added to the connector's probed_modes | |
73 | * list, then culled (based on validity and the @maxX, @maxY parameters) and | |
74 | * put into the normal modes list. | |
75 | * | |
76 | * Intended to be used either at bootup time or when major configuration | |
77 | * changes have occurred. | |
78 | * | |
79 | * FIXME: take into account monitor limits | |
40a518d9 JB |
80 | * |
81 | * RETURNS: | |
82 | * Number of modes found on @connector. | |
f453ba04 | 83 | */ |
40a518d9 JB |
84 | int drm_helper_probe_single_connector_modes(struct drm_connector *connector, |
85 | uint32_t maxX, uint32_t maxY) | |
f453ba04 DA |
86 | { |
87 | struct drm_device *dev = connector->dev; | |
88 | struct drm_display_mode *mode, *t; | |
89 | struct drm_connector_helper_funcs *connector_funcs = | |
90 | connector->helper_private; | |
40a518d9 | 91 | int count = 0; |
6714977b | 92 | int mode_flags = 0; |
f453ba04 | 93 | |
9440106b JG |
94 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", connector->base.id, |
95 | drm_get_connector_name(connector)); | |
f453ba04 DA |
96 | /* set all modes to the unverified state */ |
97 | list_for_each_entry_safe(mode, t, &connector->modes, head) | |
98 | mode->status = MODE_UNVERIFIED; | |
99 | ||
d50ba256 DA |
100 | if (connector->force) { |
101 | if (connector->force == DRM_FORCE_ON) | |
102 | connector->status = connector_status_connected; | |
103 | else | |
104 | connector->status = connector_status_disconnected; | |
105 | if (connector->funcs->force) | |
106 | connector->funcs->force(connector); | |
e58f637b | 107 | } else { |
930a9e28 | 108 | connector->status = connector->funcs->detect(connector, true); |
551402a3 | 109 | drm_kms_helper_poll_enable(dev); |
e58f637b | 110 | } |
f453ba04 DA |
111 | |
112 | if (connector->status == connector_status_disconnected) { | |
9440106b JG |
113 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] disconnected\n", |
114 | connector->base.id, drm_get_connector_name(connector)); | |
72539832 | 115 | drm_mode_connector_update_edid_property(connector, NULL); |
620f3781 | 116 | goto prune; |
f453ba04 DA |
117 | } |
118 | ||
40a518d9 | 119 | count = (*connector_funcs->get_modes)(connector); |
c7ef35a9 | 120 | if (count == 0 && connector->status == connector_status_connected) |
9632b41f | 121 | count = drm_add_modes_noedid(connector, 1024, 768); |
c7ef35a9 CW |
122 | if (count == 0) |
123 | goto prune; | |
f453ba04 | 124 | |
40a518d9 | 125 | drm_mode_connector_list_update(connector); |
f453ba04 DA |
126 | |
127 | if (maxX && maxY) | |
128 | drm_mode_validate_size(dev, &connector->modes, maxX, | |
129 | maxY, 0); | |
6714977b | 130 | |
131 | if (connector->interlace_allowed) | |
132 | mode_flags |= DRM_MODE_FLAG_INTERLACE; | |
133 | if (connector->doublescan_allowed) | |
134 | mode_flags |= DRM_MODE_FLAG_DBLSCAN; | |
135 | drm_mode_validate_flag(connector, mode_flags); | |
136 | ||
f453ba04 DA |
137 | list_for_each_entry_safe(mode, t, &connector->modes, head) { |
138 | if (mode->status == MODE_OK) | |
139 | mode->status = connector_funcs->mode_valid(connector, | |
140 | mode); | |
141 | } | |
142 | ||
620f3781 | 143 | prune: |
f453ba04 DA |
144 | drm_mode_prune_invalid(dev, &connector->modes, true); |
145 | ||
40a518d9 JB |
146 | if (list_empty(&connector->modes)) |
147 | return 0; | |
f453ba04 DA |
148 | |
149 | drm_mode_sort(&connector->modes); | |
150 | ||
9440106b JG |
151 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] probed modes :\n", connector->base.id, |
152 | drm_get_connector_name(connector)); | |
f453ba04 DA |
153 | list_for_each_entry_safe(mode, t, &connector->modes, head) { |
154 | mode->vrefresh = drm_mode_vrefresh(mode); | |
155 | ||
156 | drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V); | |
157 | drm_mode_debug_printmodeline(mode); | |
158 | } | |
40a518d9 JB |
159 | |
160 | return count; | |
f453ba04 DA |
161 | } |
162 | EXPORT_SYMBOL(drm_helper_probe_single_connector_modes); | |
163 | ||
c9fb15f6 KP |
164 | /** |
165 | * drm_helper_encoder_in_use - check if a given encoder is in use | |
166 | * @encoder: encoder to check | |
167 | * | |
168 | * LOCKING: | |
169 | * Caller must hold mode config lock. | |
170 | * | |
171 | * Walk @encoders's DRM device's mode_config and see if it's in use. | |
172 | * | |
173 | * RETURNS: | |
174 | * True if @encoder is part of the mode_config, false otherwise. | |
175 | */ | |
176 | bool drm_helper_encoder_in_use(struct drm_encoder *encoder) | |
177 | { | |
178 | struct drm_connector *connector; | |
179 | struct drm_device *dev = encoder->dev; | |
180 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) | |
181 | if (connector->encoder == encoder) | |
182 | return true; | |
183 | return false; | |
184 | } | |
185 | EXPORT_SYMBOL(drm_helper_encoder_in_use); | |
186 | ||
f453ba04 DA |
187 | /** |
188 | * drm_helper_crtc_in_use - check if a given CRTC is in a mode_config | |
189 | * @crtc: CRTC to check | |
190 | * | |
191 | * LOCKING: | |
192 | * Caller must hold mode config lock. | |
193 | * | |
194 | * Walk @crtc's DRM device's mode_config and see if it's in use. | |
195 | * | |
196 | * RETURNS: | |
197 | * True if @crtc is part of the mode_config, false otherwise. | |
198 | */ | |
199 | bool drm_helper_crtc_in_use(struct drm_crtc *crtc) | |
200 | { | |
201 | struct drm_encoder *encoder; | |
202 | struct drm_device *dev = crtc->dev; | |
203 | /* FIXME: Locking around list access? */ | |
204 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) | |
c9fb15f6 | 205 | if (encoder->crtc == crtc && drm_helper_encoder_in_use(encoder)) |
f453ba04 DA |
206 | return true; |
207 | return false; | |
208 | } | |
209 | EXPORT_SYMBOL(drm_helper_crtc_in_use); | |
210 | ||
86a1b9d1 BS |
211 | static void |
212 | drm_encoder_disable(struct drm_encoder *encoder) | |
213 | { | |
214 | struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; | |
215 | ||
216 | if (encoder_funcs->disable) | |
217 | (*encoder_funcs->disable)(encoder); | |
218 | else | |
219 | (*encoder_funcs->dpms)(encoder, DRM_MODE_DPMS_OFF); | |
220 | } | |
221 | ||
f453ba04 | 222 | /** |
89347bb8 | 223 | * drm_helper_disable_unused_functions - disable unused objects |
f453ba04 DA |
224 | * @dev: DRM device |
225 | * | |
226 | * LOCKING: | |
227 | * Caller must hold mode config lock. | |
228 | * | |
229 | * If an connector or CRTC isn't part of @dev's mode_config, it can be disabled | |
230 | * by calling its dpms function, which should power it off. | |
231 | */ | |
232 | void drm_helper_disable_unused_functions(struct drm_device *dev) | |
233 | { | |
234 | struct drm_encoder *encoder; | |
a3a0544b | 235 | struct drm_connector *connector; |
f453ba04 DA |
236 | struct drm_crtc *crtc; |
237 | ||
a3a0544b DA |
238 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
239 | if (!connector->encoder) | |
240 | continue; | |
241 | if (connector->status == connector_status_disconnected) | |
242 | connector->encoder = NULL; | |
243 | } | |
244 | ||
f453ba04 | 245 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
92971021 | 246 | if (!drm_helper_encoder_in_use(encoder)) { |
86a1b9d1 | 247 | drm_encoder_disable(encoder); |
9c552dd7 DA |
248 | /* disconnector encoder from any connector */ |
249 | encoder->crtc = NULL; | |
a3a0544b | 250 | } |
f453ba04 DA |
251 | } |
252 | ||
253 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
254 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; | |
255 | crtc->enabled = drm_helper_crtc_in_use(crtc); | |
256 | if (!crtc->enabled) { | |
5c8d7171 AD |
257 | if (crtc_funcs->disable) |
258 | (*crtc_funcs->disable)(crtc); | |
259 | else | |
260 | (*crtc_funcs->dpms)(crtc, DRM_MODE_DPMS_OFF); | |
f453ba04 DA |
261 | crtc->fb = NULL; |
262 | } | |
263 | } | |
264 | } | |
265 | EXPORT_SYMBOL(drm_helper_disable_unused_functions); | |
266 | ||
7bec756c JB |
267 | /** |
268 | * drm_encoder_crtc_ok - can a given crtc drive a given encoder? | |
269 | * @encoder: encoder to test | |
270 | * @crtc: crtc to test | |
271 | * | |
272 | * Return false if @encoder can't be driven by @crtc, true otherwise. | |
273 | */ | |
274 | static bool drm_encoder_crtc_ok(struct drm_encoder *encoder, | |
275 | struct drm_crtc *crtc) | |
276 | { | |
277 | struct drm_device *dev; | |
278 | struct drm_crtc *tmp; | |
279 | int crtc_mask = 1; | |
280 | ||
fce7d61b | 281 | WARN(!crtc, "checking null crtc?\n"); |
7bec756c JB |
282 | |
283 | dev = crtc->dev; | |
284 | ||
285 | list_for_each_entry(tmp, &dev->mode_config.crtc_list, head) { | |
286 | if (tmp == crtc) | |
287 | break; | |
288 | crtc_mask <<= 1; | |
289 | } | |
290 | ||
291 | if (encoder->possible_crtcs & crtc_mask) | |
292 | return true; | |
293 | return false; | |
294 | } | |
295 | ||
296 | /* | |
297 | * Check the CRTC we're going to map each output to vs. its current | |
298 | * CRTC. If they don't match, we have to disable the output and the CRTC | |
299 | * since the driver will have to re-route things. | |
300 | */ | |
301 | static void | |
302 | drm_crtc_prepare_encoders(struct drm_device *dev) | |
303 | { | |
304 | struct drm_encoder_helper_funcs *encoder_funcs; | |
305 | struct drm_encoder *encoder; | |
306 | ||
307 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
308 | encoder_funcs = encoder->helper_private; | |
309 | /* Disable unused encoders */ | |
310 | if (encoder->crtc == NULL) | |
86a1b9d1 | 311 | drm_encoder_disable(encoder); |
7bec756c JB |
312 | /* Disable encoders whose CRTC is about to change */ |
313 | if (encoder_funcs->get_crtc && | |
314 | encoder->crtc != (*encoder_funcs->get_crtc)(encoder)) | |
86a1b9d1 | 315 | drm_encoder_disable(encoder); |
7bec756c JB |
316 | } |
317 | } | |
318 | ||
f453ba04 DA |
319 | /** |
320 | * drm_crtc_set_mode - set a mode | |
321 | * @crtc: CRTC to program | |
322 | * @mode: mode to use | |
323 | * @x: width of mode | |
324 | * @y: height of mode | |
325 | * | |
326 | * LOCKING: | |
327 | * Caller must hold mode config lock. | |
328 | * | |
329 | * Try to set @mode on @crtc. Give @crtc and its associated connectors a chance | |
330 | * to fixup or reject the mode prior to trying to set it. | |
331 | * | |
332 | * RETURNS: | |
333 | * True if the mode was set successfully, or false otherwise. | |
334 | */ | |
335 | bool drm_crtc_helper_set_mode(struct drm_crtc *crtc, | |
336 | struct drm_display_mode *mode, | |
3c4fdcfb KH |
337 | int x, int y, |
338 | struct drm_framebuffer *old_fb) | |
f453ba04 DA |
339 | { |
340 | struct drm_device *dev = crtc->dev; | |
27641c3f | 341 | struct drm_display_mode *adjusted_mode, saved_mode, saved_hwmode; |
f453ba04 DA |
342 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
343 | struct drm_encoder_helper_funcs *encoder_funcs; | |
344 | int saved_x, saved_y; | |
345 | struct drm_encoder *encoder; | |
346 | bool ret = true; | |
347 | ||
f453ba04 | 348 | crtc->enabled = drm_helper_crtc_in_use(crtc); |
f453ba04 DA |
349 | if (!crtc->enabled) |
350 | return true; | |
351 | ||
021a8455 CW |
352 | adjusted_mode = drm_mode_duplicate(dev, mode); |
353 | ||
27641c3f | 354 | saved_hwmode = crtc->hwmode; |
f453ba04 DA |
355 | saved_mode = crtc->mode; |
356 | saved_x = crtc->x; | |
357 | saved_y = crtc->y; | |
358 | ||
359 | /* Update crtc values up front so the driver can rely on them for mode | |
360 | * setting. | |
361 | */ | |
362 | crtc->mode = *mode; | |
363 | crtc->x = x; | |
364 | crtc->y = y; | |
365 | ||
f453ba04 DA |
366 | /* Pass our mode to the connectors and the CRTC to give them a chance to |
367 | * adjust it according to limitations or connector properties, and also | |
368 | * a chance to reject the mode entirely. | |
369 | */ | |
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 | if (!(ret = encoder_funcs->mode_fixup(encoder, mode, | |
376 | adjusted_mode))) { | |
836e53d7 | 377 | DRM_DEBUG_KMS("Encoder fixup failed\n"); |
f453ba04 DA |
378 | goto done; |
379 | } | |
380 | } | |
381 | ||
382 | if (!(ret = crtc_funcs->mode_fixup(crtc, mode, adjusted_mode))) { | |
836e53d7 | 383 | DRM_DEBUG_KMS("CRTC fixup failed\n"); |
f453ba04 DA |
384 | goto done; |
385 | } | |
9440106b | 386 | DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id); |
f453ba04 DA |
387 | |
388 | /* Prepare the encoders and CRTCs before setting the mode. */ | |
389 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
390 | ||
391 | if (encoder->crtc != crtc) | |
392 | continue; | |
393 | encoder_funcs = encoder->helper_private; | |
394 | /* Disable the encoders as the first thing we do. */ | |
395 | encoder_funcs->prepare(encoder); | |
396 | } | |
397 | ||
7bec756c JB |
398 | drm_crtc_prepare_encoders(dev); |
399 | ||
f453ba04 DA |
400 | crtc_funcs->prepare(crtc); |
401 | ||
402 | /* Set up the DPLL and any encoders state that needs to adjust or depend | |
403 | * on the DPLL. | |
404 | */ | |
5c3b82e2 CW |
405 | ret = !crtc_funcs->mode_set(crtc, mode, adjusted_mode, x, y, old_fb); |
406 | if (!ret) | |
407 | goto done; | |
f453ba04 DA |
408 | |
409 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
410 | ||
411 | if (encoder->crtc != crtc) | |
412 | continue; | |
413 | ||
9440106b JG |
414 | DRM_DEBUG_KMS("[ENCODER:%d:%s] set [MODE:%d:%s]\n", |
415 | encoder->base.id, drm_get_encoder_name(encoder), | |
416 | mode->base.id, mode->name); | |
f453ba04 DA |
417 | encoder_funcs = encoder->helper_private; |
418 | encoder_funcs->mode_set(encoder, mode, adjusted_mode); | |
419 | } | |
420 | ||
421 | /* Now enable the clocks, plane, pipe, and connectors that we set up. */ | |
422 | crtc_funcs->commit(crtc); | |
423 | ||
424 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
425 | ||
426 | if (encoder->crtc != crtc) | |
427 | continue; | |
428 | ||
429 | encoder_funcs = encoder->helper_private; | |
430 | encoder_funcs->commit(encoder); | |
431 | ||
432 | } | |
433 | ||
27641c3f MK |
434 | /* Store real post-adjustment hardware mode. */ |
435 | crtc->hwmode = *adjusted_mode; | |
436 | ||
437 | /* Calculate and store various constants which | |
438 | * are later needed by vblank and swap-completion | |
439 | * timestamping. They are derived from true hwmode. | |
440 | */ | |
441 | drm_calc_timestamping_constants(crtc); | |
442 | ||
f453ba04 DA |
443 | /* FIXME: add subpixel order */ |
444 | done: | |
021a8455 | 445 | drm_mode_destroy(dev, adjusted_mode); |
f453ba04 | 446 | if (!ret) { |
27641c3f | 447 | crtc->hwmode = saved_hwmode; |
f453ba04 DA |
448 | crtc->mode = saved_mode; |
449 | crtc->x = saved_x; | |
450 | crtc->y = saved_y; | |
451 | } | |
452 | ||
453 | return ret; | |
454 | } | |
455 | EXPORT_SYMBOL(drm_crtc_helper_set_mode); | |
456 | ||
457 | ||
458 | /** | |
459 | * drm_crtc_helper_set_config - set a new config from userspace | |
460 | * @crtc: CRTC to setup | |
461 | * @crtc_info: user provided configuration | |
462 | * @new_mode: new mode to set | |
463 | * @connector_set: set of connectors for the new config | |
464 | * @fb: new framebuffer | |
465 | * | |
466 | * LOCKING: | |
467 | * Caller must hold mode config lock. | |
468 | * | |
469 | * Setup a new configuration, provided by the user in @crtc_info, and enable | |
470 | * it. | |
471 | * | |
472 | * RETURNS: | |
473 | * Zero. (FIXME) | |
474 | */ | |
475 | int drm_crtc_helper_set_config(struct drm_mode_set *set) | |
476 | { | |
477 | struct drm_device *dev; | |
e67aae79 MM |
478 | struct drm_crtc *save_crtcs, *new_crtc, *crtc; |
479 | struct drm_encoder *save_encoders, *new_encoder, *encoder; | |
7bec756c | 480 | struct drm_framebuffer *old_fb = NULL; |
4cb72b17 JB |
481 | bool mode_changed = false; /* if true do a full mode set */ |
482 | bool fb_changed = false; /* if true and !mode_changed just do a flip */ | |
e67aae79 | 483 | struct drm_connector *save_connectors, *connector; |
f453ba04 DA |
484 | int count = 0, ro, fail = 0; |
485 | struct drm_crtc_helper_funcs *crtc_funcs; | |
486 | int ret = 0; | |
bf9dc102 | 487 | int i; |
f453ba04 | 488 | |
58367ed6 | 489 | DRM_DEBUG_KMS("\n"); |
f453ba04 DA |
490 | |
491 | if (!set) | |
492 | return -EINVAL; | |
493 | ||
494 | if (!set->crtc) | |
495 | return -EINVAL; | |
496 | ||
497 | if (!set->crtc->helper_private) | |
498 | return -EINVAL; | |
499 | ||
500 | crtc_funcs = set->crtc->helper_private; | |
501 | ||
ede3ff52 CW |
502 | if (!set->mode) |
503 | set->fb = NULL; | |
504 | ||
9440106b JG |
505 | if (set->fb) { |
506 | DRM_DEBUG_KMS("[CRTC:%d] [FB:%d] #connectors=%d (x y) (%i %i)\n", | |
507 | set->crtc->base.id, set->fb->base.id, | |
508 | (int)set->num_connectors, set->x, set->y); | |
509 | } else { | |
ede3ff52 CW |
510 | DRM_DEBUG_KMS("[CRTC:%d] [NOFB]\n", set->crtc->base.id); |
511 | set->mode = NULL; | |
512 | set->num_connectors = 0; | |
9440106b | 513 | } |
f453ba04 DA |
514 | |
515 | dev = set->crtc->dev; | |
516 | ||
e67aae79 MM |
517 | /* Allocate space for the backup of all (non-pointer) crtc, encoder and |
518 | * connector data. */ | |
519 | save_crtcs = kzalloc(dev->mode_config.num_crtc * | |
520 | sizeof(struct drm_crtc), GFP_KERNEL); | |
f453ba04 DA |
521 | if (!save_crtcs) |
522 | return -ENOMEM; | |
523 | ||
e67aae79 MM |
524 | save_encoders = kzalloc(dev->mode_config.num_encoder * |
525 | sizeof(struct drm_encoder), GFP_KERNEL); | |
f453ba04 DA |
526 | if (!save_encoders) { |
527 | kfree(save_crtcs); | |
528 | return -ENOMEM; | |
529 | } | |
530 | ||
e67aae79 MM |
531 | save_connectors = kzalloc(dev->mode_config.num_connector * |
532 | sizeof(struct drm_connector), GFP_KERNEL); | |
533 | if (!save_connectors) { | |
534 | kfree(save_crtcs); | |
535 | kfree(save_encoders); | |
536 | return -ENOMEM; | |
537 | } | |
538 | ||
539 | /* Copy data. Note that driver private data is not affected. | |
540 | * Should anything bad happen only the expected state is | |
541 | * restored, not the drivers personal bookkeeping. | |
542 | */ | |
543 | count = 0; | |
544 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
545 | save_crtcs[count++] = *crtc; | |
546 | } | |
547 | ||
548 | count = 0; | |
549 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
550 | save_encoders[count++] = *encoder; | |
551 | } | |
552 | ||
553 | count = 0; | |
554 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
555 | save_connectors[count++] = *connector; | |
556 | } | |
557 | ||
f453ba04 DA |
558 | /* We should be able to check here if the fb has the same properties |
559 | * and then just flip_or_move it */ | |
560 | if (set->crtc->fb != set->fb) { | |
712531bf | 561 | /* If we have no fb then treat it as a full mode set */ |
7bec756c | 562 | if (set->crtc->fb == NULL) { |
58367ed6 | 563 | DRM_DEBUG_KMS("crtc has no fb, full mode set\n"); |
712531bf | 564 | mode_changed = true; |
4cb72b17 JB |
565 | } else if (set->fb == NULL) { |
566 | mode_changed = true; | |
46e48456 JB |
567 | } else if (set->fb->depth != set->crtc->fb->depth) { |
568 | mode_changed = true; | |
569 | } else if (set->fb->bits_per_pixel != | |
570 | set->crtc->fb->bits_per_pixel) { | |
571 | mode_changed = true; | |
8dff4742 | 572 | } else |
712531bf | 573 | fb_changed = true; |
f453ba04 DA |
574 | } |
575 | ||
576 | if (set->x != set->crtc->x || set->y != set->crtc->y) | |
712531bf | 577 | fb_changed = true; |
f453ba04 DA |
578 | |
579 | if (set->mode && !drm_mode_equal(set->mode, &set->crtc->mode)) { | |
58367ed6 | 580 | DRM_DEBUG_KMS("modes are different, full mode set\n"); |
f453ba04 DA |
581 | drm_mode_debug_printmodeline(&set->crtc->mode); |
582 | drm_mode_debug_printmodeline(set->mode); | |
712531bf | 583 | mode_changed = true; |
f453ba04 DA |
584 | } |
585 | ||
586 | /* a) traverse passed in connector list and get encoders for them */ | |
587 | count = 0; | |
588 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
589 | struct drm_connector_helper_funcs *connector_funcs = | |
590 | connector->helper_private; | |
f453ba04 DA |
591 | new_encoder = connector->encoder; |
592 | for (ro = 0; ro < set->num_connectors; ro++) { | |
593 | if (set->connectors[ro] == connector) { | |
594 | new_encoder = connector_funcs->best_encoder(connector); | |
595 | /* if we can't get an encoder for a connector | |
596 | we are setting now - then fail */ | |
597 | if (new_encoder == NULL) | |
598 | /* don't break so fail path works correct */ | |
599 | fail = 1; | |
600 | break; | |
601 | } | |
602 | } | |
603 | ||
604 | if (new_encoder != connector->encoder) { | |
58367ed6 | 605 | DRM_DEBUG_KMS("encoder changed, full mode switch\n"); |
712531bf | 606 | mode_changed = true; |
ff846ab7 MM |
607 | /* If the encoder is reused for another connector, then |
608 | * the appropriate crtc will be set later. | |
609 | */ | |
ff6fdbed MM |
610 | if (connector->encoder) |
611 | connector->encoder->crtc = NULL; | |
f453ba04 DA |
612 | connector->encoder = new_encoder; |
613 | } | |
614 | } | |
615 | ||
616 | if (fail) { | |
617 | ret = -EINVAL; | |
e67aae79 | 618 | goto fail; |
f453ba04 DA |
619 | } |
620 | ||
621 | count = 0; | |
622 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
623 | if (!connector->encoder) | |
624 | continue; | |
625 | ||
f453ba04 DA |
626 | if (connector->encoder->crtc == set->crtc) |
627 | new_crtc = NULL; | |
628 | else | |
629 | new_crtc = connector->encoder->crtc; | |
630 | ||
631 | for (ro = 0; ro < set->num_connectors; ro++) { | |
632 | if (set->connectors[ro] == connector) | |
633 | new_crtc = set->crtc; | |
634 | } | |
7bec756c JB |
635 | |
636 | /* Make sure the new CRTC will work with the encoder */ | |
637 | if (new_crtc && | |
638 | !drm_encoder_crtc_ok(connector->encoder, new_crtc)) { | |
639 | ret = -EINVAL; | |
e67aae79 | 640 | goto fail; |
7bec756c | 641 | } |
f453ba04 | 642 | if (new_crtc != connector->encoder->crtc) { |
58367ed6 | 643 | DRM_DEBUG_KMS("crtc changed, full mode switch\n"); |
712531bf | 644 | mode_changed = true; |
f453ba04 DA |
645 | connector->encoder->crtc = new_crtc; |
646 | } | |
9440106b JG |
647 | if (new_crtc) { |
648 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] to [CRTC:%d]\n", | |
649 | connector->base.id, drm_get_connector_name(connector), | |
650 | new_crtc->base.id); | |
651 | } else { | |
652 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] to [NOCRTC]\n", | |
653 | connector->base.id, drm_get_connector_name(connector)); | |
654 | } | |
f453ba04 DA |
655 | } |
656 | ||
657 | /* mode_set_base is not a required function */ | |
712531bf JB |
658 | if (fb_changed && !crtc_funcs->mode_set_base) |
659 | mode_changed = true; | |
f453ba04 | 660 | |
712531bf | 661 | if (mode_changed) { |
9334ef75 CW |
662 | set->crtc->enabled = drm_helper_crtc_in_use(set->crtc); |
663 | if (set->crtc->enabled) { | |
58367ed6 ZY |
664 | DRM_DEBUG_KMS("attempting to set mode from" |
665 | " userspace\n"); | |
f453ba04 | 666 | drm_mode_debug_printmodeline(set->mode); |
356ad3cd CW |
667 | old_fb = set->crtc->fb; |
668 | set->crtc->fb = set->fb; | |
f453ba04 | 669 | if (!drm_crtc_helper_set_mode(set->crtc, set->mode, |
3c4fdcfb KH |
670 | set->x, set->y, |
671 | old_fb)) { | |
9440106b JG |
672 | DRM_ERROR("failed to set mode on [CRTC:%d]\n", |
673 | set->crtc->base.id); | |
0ba41e44 | 674 | set->crtc->fb = old_fb; |
f453ba04 | 675 | ret = -EINVAL; |
e67aae79 | 676 | goto fail; |
f453ba04 | 677 | } |
811aaa55 KP |
678 | DRM_DEBUG_KMS("Setting connector DPMS state to on\n"); |
679 | for (i = 0; i < set->num_connectors; i++) { | |
680 | DRM_DEBUG_KMS("\t[CONNECTOR:%d:%s] set DPMS on\n", set->connectors[i]->base.id, | |
681 | drm_get_connector_name(set->connectors[i])); | |
682 | set->connectors[i]->dpms = DRM_MODE_DPMS_ON; | |
683 | } | |
f453ba04 DA |
684 | } |
685 | drm_helper_disable_unused_functions(dev); | |
712531bf | 686 | } else if (fb_changed) { |
9b1596af BS |
687 | set->crtc->x = set->x; |
688 | set->crtc->y = set->y; | |
689 | ||
3c4fdcfb | 690 | old_fb = set->crtc->fb; |
f453ba04 DA |
691 | if (set->crtc->fb != set->fb) |
692 | set->crtc->fb = set->fb; | |
5c3b82e2 CW |
693 | ret = crtc_funcs->mode_set_base(set->crtc, |
694 | set->x, set->y, old_fb); | |
0ba41e44 CW |
695 | if (ret != 0) { |
696 | set->crtc->fb = old_fb; | |
e67aae79 | 697 | goto fail; |
0ba41e44 | 698 | } |
f453ba04 DA |
699 | } |
700 | ||
e67aae79 | 701 | kfree(save_connectors); |
f453ba04 DA |
702 | kfree(save_encoders); |
703 | kfree(save_crtcs); | |
704 | return 0; | |
705 | ||
e67aae79 MM |
706 | fail: |
707 | /* Restore all previous data. */ | |
f453ba04 | 708 | count = 0; |
e67aae79 MM |
709 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
710 | *crtc = save_crtcs[count++]; | |
711 | } | |
e62fb64e | 712 | |
e67aae79 MM |
713 | count = 0; |
714 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
715 | *encoder = save_encoders[count++]; | |
e62fb64e | 716 | } |
e67aae79 | 717 | |
f453ba04 DA |
718 | count = 0; |
719 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
e67aae79 | 720 | *connector = save_connectors[count++]; |
f453ba04 | 721 | } |
e67aae79 MM |
722 | |
723 | kfree(save_connectors); | |
f453ba04 | 724 | kfree(save_encoders); |
e67aae79 | 725 | kfree(save_crtcs); |
f453ba04 DA |
726 | return ret; |
727 | } | |
728 | EXPORT_SYMBOL(drm_crtc_helper_set_config); | |
729 | ||
c9fb15f6 KP |
730 | static int drm_helper_choose_encoder_dpms(struct drm_encoder *encoder) |
731 | { | |
732 | int dpms = DRM_MODE_DPMS_OFF; | |
733 | struct drm_connector *connector; | |
734 | struct drm_device *dev = encoder->dev; | |
735 | ||
736 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) | |
737 | if (connector->encoder == encoder) | |
738 | if (connector->dpms < dpms) | |
739 | dpms = connector->dpms; | |
740 | return dpms; | |
741 | } | |
742 | ||
743 | static int drm_helper_choose_crtc_dpms(struct drm_crtc *crtc) | |
744 | { | |
745 | int dpms = DRM_MODE_DPMS_OFF; | |
746 | struct drm_connector *connector; | |
747 | struct drm_device *dev = crtc->dev; | |
748 | ||
749 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) | |
750 | if (connector->encoder && connector->encoder->crtc == crtc) | |
751 | if (connector->dpms < dpms) | |
752 | dpms = connector->dpms; | |
753 | return dpms; | |
754 | } | |
755 | ||
756 | /** | |
757 | * drm_helper_connector_dpms | |
758 | * @connector affected connector | |
759 | * @mode DPMS mode | |
760 | * | |
761 | * Calls the low-level connector DPMS function, then | |
762 | * calls appropriate encoder and crtc DPMS functions as well | |
763 | */ | |
764 | void drm_helper_connector_dpms(struct drm_connector *connector, int mode) | |
765 | { | |
766 | struct drm_encoder *encoder = connector->encoder; | |
767 | struct drm_crtc *crtc = encoder ? encoder->crtc : NULL; | |
768 | int old_dpms; | |
769 | ||
770 | if (mode == connector->dpms) | |
771 | return; | |
772 | ||
773 | old_dpms = connector->dpms; | |
774 | connector->dpms = mode; | |
775 | ||
776 | /* from off to on, do crtc then encoder */ | |
777 | if (mode < old_dpms) { | |
778 | if (crtc) { | |
779 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; | |
780 | if (crtc_funcs->dpms) | |
781 | (*crtc_funcs->dpms) (crtc, | |
782 | drm_helper_choose_crtc_dpms(crtc)); | |
783 | } | |
784 | if (encoder) { | |
785 | struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; | |
786 | if (encoder_funcs->dpms) | |
787 | (*encoder_funcs->dpms) (encoder, | |
788 | drm_helper_choose_encoder_dpms(encoder)); | |
789 | } | |
790 | } | |
791 | ||
792 | /* from on to off, do encoder then crtc */ | |
793 | if (mode > old_dpms) { | |
794 | if (encoder) { | |
795 | struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; | |
796 | if (encoder_funcs->dpms) | |
797 | (*encoder_funcs->dpms) (encoder, | |
798 | drm_helper_choose_encoder_dpms(encoder)); | |
799 | } | |
800 | if (crtc) { | |
801 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; | |
802 | if (crtc_funcs->dpms) | |
803 | (*crtc_funcs->dpms) (crtc, | |
804 | drm_helper_choose_crtc_dpms(crtc)); | |
805 | } | |
806 | } | |
807 | ||
808 | return; | |
809 | } | |
810 | EXPORT_SYMBOL(drm_helper_connector_dpms); | |
811 | ||
f453ba04 DA |
812 | int drm_helper_mode_fill_fb_struct(struct drm_framebuffer *fb, |
813 | struct drm_mode_fb_cmd *mode_cmd) | |
814 | { | |
815 | fb->width = mode_cmd->width; | |
816 | fb->height = mode_cmd->height; | |
817 | fb->pitch = mode_cmd->pitch; | |
818 | fb->bits_per_pixel = mode_cmd->bpp; | |
819 | fb->depth = mode_cmd->depth; | |
820 | ||
821 | return 0; | |
822 | } | |
823 | EXPORT_SYMBOL(drm_helper_mode_fill_fb_struct); | |
824 | ||
825 | int drm_helper_resume_force_mode(struct drm_device *dev) | |
826 | { | |
827 | struct drm_crtc *crtc; | |
89347bb8 DJ |
828 | struct drm_encoder *encoder; |
829 | struct drm_encoder_helper_funcs *encoder_funcs; | |
830 | struct drm_crtc_helper_funcs *crtc_funcs; | |
f453ba04 DA |
831 | int ret; |
832 | ||
833 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
834 | ||
835 | if (!crtc->enabled) | |
836 | continue; | |
837 | ||
3c4fdcfb KH |
838 | ret = drm_crtc_helper_set_mode(crtc, &crtc->mode, |
839 | crtc->x, crtc->y, crtc->fb); | |
f453ba04 DA |
840 | |
841 | if (ret == false) | |
842 | DRM_ERROR("failed to set mode on crtc %p\n", crtc); | |
89347bb8 DJ |
843 | |
844 | /* Turn off outputs that were already powered off */ | |
845 | if (drm_helper_choose_crtc_dpms(crtc)) { | |
846 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
847 | ||
848 | if(encoder->crtc != crtc) | |
849 | continue; | |
850 | ||
851 | encoder_funcs = encoder->helper_private; | |
852 | if (encoder_funcs->dpms) | |
853 | (*encoder_funcs->dpms) (encoder, | |
854 | drm_helper_choose_encoder_dpms(encoder)); | |
89347bb8 | 855 | } |
817e631e CW |
856 | |
857 | crtc_funcs = crtc->helper_private; | |
858 | if (crtc_funcs->dpms) | |
859 | (*crtc_funcs->dpms) (crtc, | |
860 | drm_helper_choose_crtc_dpms(crtc)); | |
89347bb8 | 861 | } |
f453ba04 | 862 | } |
af4fcb57 ZY |
863 | /* disable the unused connectors while restoring the modesetting */ |
864 | drm_helper_disable_unused_functions(dev); | |
f453ba04 DA |
865 | return 0; |
866 | } | |
867 | EXPORT_SYMBOL(drm_helper_resume_force_mode); | |
eb1f8e4f | 868 | |
eb1f8e4f | 869 | #define DRM_OUTPUT_POLL_PERIOD (10*HZ) |
991ea75c | 870 | static void output_poll_execute(struct work_struct *work) |
eb1f8e4f | 871 | { |
991ea75c TH |
872 | struct delayed_work *delayed_work = to_delayed_work(work); |
873 | struct drm_device *dev = container_of(delayed_work, struct drm_device, mode_config.output_poll_work); | |
eb1f8e4f | 874 | struct drm_connector *connector; |
c5027dec | 875 | enum drm_connector_status old_status; |
eb1f8e4f | 876 | bool repoll = false, changed = false; |
eb1f8e4f | 877 | |
e58f637b CW |
878 | if (!drm_kms_helper_poll) |
879 | return; | |
880 | ||
eb1f8e4f DA |
881 | mutex_lock(&dev->mode_config.mutex); |
882 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
883 | ||
884 | /* if this is HPD or polled don't check it - | |
885 | TV out for instance */ | |
886 | if (!connector->polled) | |
887 | continue; | |
888 | ||
889 | else if (connector->polled & (DRM_CONNECTOR_POLL_CONNECT | DRM_CONNECTOR_POLL_DISCONNECT)) | |
890 | repoll = true; | |
891 | ||
892 | old_status = connector->status; | |
893 | /* if we are connected and don't want to poll for disconnect | |
894 | skip it */ | |
895 | if (old_status == connector_status_connected && | |
896 | !(connector->polled & DRM_CONNECTOR_POLL_DISCONNECT) && | |
897 | !(connector->polled & DRM_CONNECTOR_POLL_HPD)) | |
898 | continue; | |
899 | ||
c5027dec | 900 | connector->status = connector->funcs->detect(connector, false); |
0f16830e CW |
901 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] status updated from %d to %d\n", |
902 | connector->base.id, | |
903 | drm_get_connector_name(connector), | |
904 | old_status, connector->status); | |
c5027dec | 905 | if (old_status != connector->status) |
eb1f8e4f DA |
906 | changed = true; |
907 | } | |
908 | ||
909 | mutex_unlock(&dev->mode_config.mutex); | |
910 | ||
911 | if (changed) { | |
912 | /* send a uevent + call fbdev */ | |
913 | drm_sysfs_hotplug_event(dev); | |
914 | if (dev->mode_config.funcs->output_poll_changed) | |
915 | dev->mode_config.funcs->output_poll_changed(dev); | |
916 | } | |
917 | ||
9a919c46 TH |
918 | if (repoll) |
919 | queue_delayed_work(system_nrt_wq, delayed_work, DRM_OUTPUT_POLL_PERIOD); | |
eb1f8e4f DA |
920 | } |
921 | ||
fbf81762 DA |
922 | void drm_kms_helper_poll_disable(struct drm_device *dev) |
923 | { | |
924 | if (!dev->mode_config.poll_enabled) | |
925 | return; | |
991ea75c | 926 | cancel_delayed_work_sync(&dev->mode_config.output_poll_work); |
fbf81762 DA |
927 | } |
928 | EXPORT_SYMBOL(drm_kms_helper_poll_disable); | |
929 | ||
930 | void drm_kms_helper_poll_enable(struct drm_device *dev) | |
eb1f8e4f | 931 | { |
eb1f8e4f | 932 | bool poll = false; |
fbf81762 | 933 | struct drm_connector *connector; |
eb1f8e4f | 934 | |
e58f637b CW |
935 | if (!dev->mode_config.poll_enabled || !drm_kms_helper_poll) |
936 | return; | |
937 | ||
eb1f8e4f DA |
938 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
939 | if (connector->polled) | |
940 | poll = true; | |
941 | } | |
eb1f8e4f | 942 | |
9a919c46 TH |
943 | if (poll) |
944 | queue_delayed_work(system_nrt_wq, &dev->mode_config.output_poll_work, DRM_OUTPUT_POLL_PERIOD); | |
eb1f8e4f | 945 | } |
fbf81762 DA |
946 | EXPORT_SYMBOL(drm_kms_helper_poll_enable); |
947 | ||
948 | void drm_kms_helper_poll_init(struct drm_device *dev) | |
949 | { | |
991ea75c | 950 | INIT_DELAYED_WORK(&dev->mode_config.output_poll_work, output_poll_execute); |
fbf81762 DA |
951 | dev->mode_config.poll_enabled = true; |
952 | ||
953 | drm_kms_helper_poll_enable(dev); | |
954 | } | |
eb1f8e4f DA |
955 | EXPORT_SYMBOL(drm_kms_helper_poll_init); |
956 | ||
957 | void drm_kms_helper_poll_fini(struct drm_device *dev) | |
958 | { | |
fbf81762 | 959 | drm_kms_helper_poll_disable(dev); |
eb1f8e4f DA |
960 | } |
961 | EXPORT_SYMBOL(drm_kms_helper_poll_fini); | |
962 | ||
963 | void drm_helper_hpd_irq_event(struct drm_device *dev) | |
964 | { | |
965 | if (!dev->mode_config.poll_enabled) | |
966 | return; | |
e58f637b | 967 | |
991ea75c TH |
968 | /* kill timer and schedule immediate execution, this doesn't block */ |
969 | cancel_delayed_work(&dev->mode_config.output_poll_work); | |
e58f637b CW |
970 | if (drm_kms_helper_poll) |
971 | queue_delayed_work(system_nrt_wq, &dev->mode_config.output_poll_work, 0); | |
eb1f8e4f DA |
972 | } |
973 | EXPORT_SYMBOL(drm_helper_hpd_irq_event); |