Commit | Line | Data |
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f453ba04 DA |
1 | /* |
2 | * Copyright (c) 2006-2008 Intel Corporation | |
3 | * Copyright (c) 2007 Dave Airlie <airlied@linux.ie> | |
4 | * | |
5 | * DRM core CRTC related functions | |
6 | * | |
7 | * Permission to use, copy, modify, distribute, and sell this software and its | |
8 | * documentation for any purpose is hereby granted without fee, provided that | |
9 | * the above copyright notice appear in all copies and that both that copyright | |
10 | * notice and this permission notice appear in supporting documentation, and | |
11 | * that the name of the copyright holders not be used in advertising or | |
12 | * publicity pertaining to distribution of the software without specific, | |
13 | * written prior permission. The copyright holders make no representations | |
14 | * about the suitability of this software for any purpose. It is provided "as | |
15 | * is" without express or implied warranty. | |
16 | * | |
17 | * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, | |
18 | * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO | |
19 | * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR | |
20 | * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, | |
21 | * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER | |
22 | * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE | |
23 | * OF THIS SOFTWARE. | |
24 | * | |
25 | * Authors: | |
26 | * Keith Packard | |
27 | * Eric Anholt <eric@anholt.net> | |
28 | * Dave Airlie <airlied@linux.ie> | |
29 | * Jesse Barnes <jesse.barnes@intel.com> | |
30 | */ | |
31 | ||
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 | { | |
47 | struct drm_display_mode *mode, *t; | |
48 | ||
49 | if (flags == (DRM_MODE_FLAG_DBLSCAN | DRM_MODE_FLAG_INTERLACE)) | |
50 | return; | |
51 | ||
52 | list_for_each_entry_safe(mode, t, &connector->modes, head) { | |
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; | |
90 | struct drm_display_mode *mode, *t; | |
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 DA |
98 | /* set all modes to the unverified state */ |
99 | list_for_each_entry_safe(mode, t, &connector->modes, head) | |
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 | ||
f453ba04 DA |
139 | list_for_each_entry_safe(mode, t, &connector->modes, head) { |
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)); | |
f453ba04 DA |
155 | list_for_each_entry_safe(mode, t, &connector->modes, head) { |
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 CW |
354 | adjusted_mode = drm_mode_duplicate(dev, mode); |
355 | ||
27641c3f | 356 | saved_hwmode = crtc->hwmode; |
f453ba04 DA |
357 | saved_mode = crtc->mode; |
358 | saved_x = crtc->x; | |
359 | saved_y = crtc->y; | |
360 | ||
361 | /* Update crtc values up front so the driver can rely on them for mode | |
362 | * setting. | |
363 | */ | |
364 | crtc->mode = *mode; | |
365 | crtc->x = x; | |
366 | crtc->y = y; | |
367 | ||
f453ba04 DA |
368 | /* Pass our mode to the connectors and the CRTC to give them a chance to |
369 | * adjust it according to limitations or connector properties, and also | |
370 | * a chance to reject the mode entirely. | |
371 | */ | |
372 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
373 | ||
374 | if (encoder->crtc != crtc) | |
375 | continue; | |
376 | encoder_funcs = encoder->helper_private; | |
377 | if (!(ret = encoder_funcs->mode_fixup(encoder, mode, | |
378 | adjusted_mode))) { | |
836e53d7 | 379 | DRM_DEBUG_KMS("Encoder fixup failed\n"); |
f453ba04 DA |
380 | goto done; |
381 | } | |
382 | } | |
383 | ||
384 | if (!(ret = crtc_funcs->mode_fixup(crtc, mode, adjusted_mode))) { | |
836e53d7 | 385 | DRM_DEBUG_KMS("CRTC fixup failed\n"); |
f453ba04 DA |
386 | goto done; |
387 | } | |
9440106b | 388 | DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id); |
f453ba04 DA |
389 | |
390 | /* Prepare the encoders and CRTCs before setting the mode. */ | |
391 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
392 | ||
393 | if (encoder->crtc != crtc) | |
394 | continue; | |
395 | encoder_funcs = encoder->helper_private; | |
396 | /* Disable the encoders as the first thing we do. */ | |
397 | encoder_funcs->prepare(encoder); | |
398 | } | |
399 | ||
7bec756c JB |
400 | drm_crtc_prepare_encoders(dev); |
401 | ||
f453ba04 DA |
402 | crtc_funcs->prepare(crtc); |
403 | ||
404 | /* Set up the DPLL and any encoders state that needs to adjust or depend | |
405 | * on the DPLL. | |
406 | */ | |
5c3b82e2 CW |
407 | ret = !crtc_funcs->mode_set(crtc, mode, adjusted_mode, x, y, old_fb); |
408 | if (!ret) | |
409 | goto done; | |
f453ba04 DA |
410 | |
411 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
412 | ||
413 | if (encoder->crtc != crtc) | |
414 | continue; | |
415 | ||
9440106b JG |
416 | DRM_DEBUG_KMS("[ENCODER:%d:%s] set [MODE:%d:%s]\n", |
417 | encoder->base.id, drm_get_encoder_name(encoder), | |
418 | mode->base.id, mode->name); | |
f453ba04 DA |
419 | encoder_funcs = encoder->helper_private; |
420 | encoder_funcs->mode_set(encoder, mode, adjusted_mode); | |
421 | } | |
422 | ||
423 | /* Now enable the clocks, plane, pipe, and connectors that we set up. */ | |
424 | crtc_funcs->commit(crtc); | |
425 | ||
426 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
427 | ||
428 | if (encoder->crtc != crtc) | |
429 | continue; | |
430 | ||
431 | encoder_funcs = encoder->helper_private; | |
432 | encoder_funcs->commit(encoder); | |
433 | ||
434 | } | |
435 | ||
27641c3f MK |
436 | /* Store real post-adjustment hardware mode. */ |
437 | crtc->hwmode = *adjusted_mode; | |
438 | ||
439 | /* Calculate and store various constants which | |
440 | * are later needed by vblank and swap-completion | |
441 | * timestamping. They are derived from true hwmode. | |
442 | */ | |
443 | drm_calc_timestamping_constants(crtc); | |
444 | ||
f453ba04 DA |
445 | /* FIXME: add subpixel order */ |
446 | done: | |
021a8455 | 447 | drm_mode_destroy(dev, adjusted_mode); |
f453ba04 | 448 | if (!ret) { |
27641c3f | 449 | crtc->hwmode = saved_hwmode; |
f453ba04 DA |
450 | crtc->mode = saved_mode; |
451 | crtc->x = saved_x; | |
452 | crtc->y = saved_y; | |
453 | } | |
454 | ||
455 | return ret; | |
456 | } | |
457 | EXPORT_SYMBOL(drm_crtc_helper_set_mode); | |
458 | ||
459 | ||
460 | /** | |
461 | * drm_crtc_helper_set_config - set a new config from userspace | |
462 | * @crtc: CRTC to setup | |
463 | * @crtc_info: user provided configuration | |
464 | * @new_mode: new mode to set | |
465 | * @connector_set: set of connectors for the new config | |
466 | * @fb: new framebuffer | |
467 | * | |
468 | * LOCKING: | |
469 | * Caller must hold mode config lock. | |
470 | * | |
471 | * Setup a new configuration, provided by the user in @crtc_info, and enable | |
472 | * it. | |
473 | * | |
474 | * RETURNS: | |
475 | * Zero. (FIXME) | |
476 | */ | |
477 | int drm_crtc_helper_set_config(struct drm_mode_set *set) | |
478 | { | |
479 | struct drm_device *dev; | |
e67aae79 MM |
480 | struct drm_crtc *save_crtcs, *new_crtc, *crtc; |
481 | struct drm_encoder *save_encoders, *new_encoder, *encoder; | |
7bec756c | 482 | struct drm_framebuffer *old_fb = NULL; |
4cb72b17 JB |
483 | bool mode_changed = false; /* if true do a full mode set */ |
484 | bool fb_changed = false; /* if true and !mode_changed just do a flip */ | |
e67aae79 | 485 | struct drm_connector *save_connectors, *connector; |
f453ba04 DA |
486 | int count = 0, ro, fail = 0; |
487 | struct drm_crtc_helper_funcs *crtc_funcs; | |
488 | int ret = 0; | |
bf9dc102 | 489 | int i; |
f453ba04 | 490 | |
58367ed6 | 491 | DRM_DEBUG_KMS("\n"); |
f453ba04 DA |
492 | |
493 | if (!set) | |
494 | return -EINVAL; | |
495 | ||
496 | if (!set->crtc) | |
497 | return -EINVAL; | |
498 | ||
499 | if (!set->crtc->helper_private) | |
500 | return -EINVAL; | |
501 | ||
502 | crtc_funcs = set->crtc->helper_private; | |
503 | ||
ede3ff52 CW |
504 | if (!set->mode) |
505 | set->fb = NULL; | |
506 | ||
9440106b JG |
507 | if (set->fb) { |
508 | DRM_DEBUG_KMS("[CRTC:%d] [FB:%d] #connectors=%d (x y) (%i %i)\n", | |
509 | set->crtc->base.id, set->fb->base.id, | |
510 | (int)set->num_connectors, set->x, set->y); | |
511 | } else { | |
ede3ff52 CW |
512 | DRM_DEBUG_KMS("[CRTC:%d] [NOFB]\n", set->crtc->base.id); |
513 | set->mode = NULL; | |
514 | set->num_connectors = 0; | |
9440106b | 515 | } |
f453ba04 DA |
516 | |
517 | dev = set->crtc->dev; | |
518 | ||
e67aae79 MM |
519 | /* Allocate space for the backup of all (non-pointer) crtc, encoder and |
520 | * connector data. */ | |
521 | save_crtcs = kzalloc(dev->mode_config.num_crtc * | |
522 | sizeof(struct drm_crtc), GFP_KERNEL); | |
f453ba04 DA |
523 | if (!save_crtcs) |
524 | return -ENOMEM; | |
525 | ||
e67aae79 MM |
526 | save_encoders = kzalloc(dev->mode_config.num_encoder * |
527 | sizeof(struct drm_encoder), GFP_KERNEL); | |
f453ba04 DA |
528 | if (!save_encoders) { |
529 | kfree(save_crtcs); | |
530 | return -ENOMEM; | |
531 | } | |
532 | ||
e67aae79 MM |
533 | save_connectors = kzalloc(dev->mode_config.num_connector * |
534 | sizeof(struct drm_connector), GFP_KERNEL); | |
535 | if (!save_connectors) { | |
536 | kfree(save_crtcs); | |
537 | kfree(save_encoders); | |
538 | return -ENOMEM; | |
539 | } | |
540 | ||
541 | /* Copy data. Note that driver private data is not affected. | |
542 | * Should anything bad happen only the expected state is | |
543 | * restored, not the drivers personal bookkeeping. | |
544 | */ | |
545 | count = 0; | |
546 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
547 | save_crtcs[count++] = *crtc; | |
548 | } | |
549 | ||
550 | count = 0; | |
551 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
552 | save_encoders[count++] = *encoder; | |
553 | } | |
554 | ||
555 | count = 0; | |
556 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
557 | save_connectors[count++] = *connector; | |
558 | } | |
559 | ||
f453ba04 DA |
560 | /* We should be able to check here if the fb has the same properties |
561 | * and then just flip_or_move it */ | |
562 | if (set->crtc->fb != set->fb) { | |
712531bf | 563 | /* If we have no fb then treat it as a full mode set */ |
7bec756c | 564 | if (set->crtc->fb == NULL) { |
58367ed6 | 565 | DRM_DEBUG_KMS("crtc has no fb, full mode set\n"); |
712531bf | 566 | mode_changed = true; |
4cb72b17 JB |
567 | } else if (set->fb == NULL) { |
568 | mode_changed = true; | |
46e48456 JB |
569 | } else if (set->fb->depth != set->crtc->fb->depth) { |
570 | mode_changed = true; | |
571 | } else if (set->fb->bits_per_pixel != | |
572 | set->crtc->fb->bits_per_pixel) { | |
573 | mode_changed = true; | |
8dff4742 | 574 | } else |
712531bf | 575 | fb_changed = true; |
f453ba04 DA |
576 | } |
577 | ||
578 | if (set->x != set->crtc->x || set->y != set->crtc->y) | |
712531bf | 579 | fb_changed = true; |
f453ba04 DA |
580 | |
581 | if (set->mode && !drm_mode_equal(set->mode, &set->crtc->mode)) { | |
58367ed6 | 582 | DRM_DEBUG_KMS("modes are different, full mode set\n"); |
f453ba04 DA |
583 | drm_mode_debug_printmodeline(&set->crtc->mode); |
584 | drm_mode_debug_printmodeline(set->mode); | |
712531bf | 585 | mode_changed = true; |
f453ba04 DA |
586 | } |
587 | ||
588 | /* a) traverse passed in connector list and get encoders for them */ | |
589 | count = 0; | |
590 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
591 | struct drm_connector_helper_funcs *connector_funcs = | |
592 | connector->helper_private; | |
f453ba04 DA |
593 | new_encoder = connector->encoder; |
594 | for (ro = 0; ro < set->num_connectors; ro++) { | |
595 | if (set->connectors[ro] == connector) { | |
596 | new_encoder = connector_funcs->best_encoder(connector); | |
597 | /* if we can't get an encoder for a connector | |
598 | we are setting now - then fail */ | |
599 | if (new_encoder == NULL) | |
600 | /* don't break so fail path works correct */ | |
601 | fail = 1; | |
602 | break; | |
603 | } | |
604 | } | |
605 | ||
606 | if (new_encoder != connector->encoder) { | |
58367ed6 | 607 | DRM_DEBUG_KMS("encoder changed, full mode switch\n"); |
712531bf | 608 | mode_changed = true; |
ff846ab7 MM |
609 | /* If the encoder is reused for another connector, then |
610 | * the appropriate crtc will be set later. | |
611 | */ | |
ff6fdbed MM |
612 | if (connector->encoder) |
613 | connector->encoder->crtc = NULL; | |
f453ba04 DA |
614 | connector->encoder = new_encoder; |
615 | } | |
616 | } | |
617 | ||
618 | if (fail) { | |
619 | ret = -EINVAL; | |
e67aae79 | 620 | goto fail; |
f453ba04 DA |
621 | } |
622 | ||
623 | count = 0; | |
624 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
625 | if (!connector->encoder) | |
626 | continue; | |
627 | ||
f453ba04 DA |
628 | if (connector->encoder->crtc == set->crtc) |
629 | new_crtc = NULL; | |
630 | else | |
631 | new_crtc = connector->encoder->crtc; | |
632 | ||
633 | for (ro = 0; ro < set->num_connectors; ro++) { | |
634 | if (set->connectors[ro] == connector) | |
635 | new_crtc = set->crtc; | |
636 | } | |
7bec756c JB |
637 | |
638 | /* Make sure the new CRTC will work with the encoder */ | |
639 | if (new_crtc && | |
640 | !drm_encoder_crtc_ok(connector->encoder, new_crtc)) { | |
641 | ret = -EINVAL; | |
e67aae79 | 642 | goto fail; |
7bec756c | 643 | } |
f453ba04 | 644 | if (new_crtc != connector->encoder->crtc) { |
58367ed6 | 645 | DRM_DEBUG_KMS("crtc changed, full mode switch\n"); |
712531bf | 646 | mode_changed = true; |
f453ba04 DA |
647 | connector->encoder->crtc = new_crtc; |
648 | } | |
9440106b JG |
649 | if (new_crtc) { |
650 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] to [CRTC:%d]\n", | |
651 | connector->base.id, drm_get_connector_name(connector), | |
652 | new_crtc->base.id); | |
653 | } else { | |
654 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] to [NOCRTC]\n", | |
655 | connector->base.id, drm_get_connector_name(connector)); | |
656 | } | |
f453ba04 DA |
657 | } |
658 | ||
659 | /* mode_set_base is not a required function */ | |
712531bf JB |
660 | if (fb_changed && !crtc_funcs->mode_set_base) |
661 | mode_changed = true; | |
f453ba04 | 662 | |
712531bf | 663 | if (mode_changed) { |
9334ef75 CW |
664 | set->crtc->enabled = drm_helper_crtc_in_use(set->crtc); |
665 | if (set->crtc->enabled) { | |
58367ed6 ZY |
666 | DRM_DEBUG_KMS("attempting to set mode from" |
667 | " userspace\n"); | |
f453ba04 | 668 | drm_mode_debug_printmodeline(set->mode); |
356ad3cd CW |
669 | old_fb = set->crtc->fb; |
670 | set->crtc->fb = set->fb; | |
f453ba04 | 671 | if (!drm_crtc_helper_set_mode(set->crtc, set->mode, |
3c4fdcfb KH |
672 | set->x, set->y, |
673 | old_fb)) { | |
9440106b JG |
674 | DRM_ERROR("failed to set mode on [CRTC:%d]\n", |
675 | set->crtc->base.id); | |
0ba41e44 | 676 | set->crtc->fb = old_fb; |
f453ba04 | 677 | ret = -EINVAL; |
e67aae79 | 678 | goto fail; |
f453ba04 | 679 | } |
811aaa55 KP |
680 | DRM_DEBUG_KMS("Setting connector DPMS state to on\n"); |
681 | for (i = 0; i < set->num_connectors; i++) { | |
682 | DRM_DEBUG_KMS("\t[CONNECTOR:%d:%s] set DPMS on\n", set->connectors[i]->base.id, | |
683 | drm_get_connector_name(set->connectors[i])); | |
684 | set->connectors[i]->dpms = DRM_MODE_DPMS_ON; | |
685 | } | |
f453ba04 DA |
686 | } |
687 | drm_helper_disable_unused_functions(dev); | |
712531bf | 688 | } else if (fb_changed) { |
9b1596af BS |
689 | set->crtc->x = set->x; |
690 | set->crtc->y = set->y; | |
691 | ||
3c4fdcfb | 692 | old_fb = set->crtc->fb; |
f453ba04 DA |
693 | if (set->crtc->fb != set->fb) |
694 | set->crtc->fb = set->fb; | |
5c3b82e2 CW |
695 | ret = crtc_funcs->mode_set_base(set->crtc, |
696 | set->x, set->y, old_fb); | |
0ba41e44 CW |
697 | if (ret != 0) { |
698 | set->crtc->fb = old_fb; | |
e67aae79 | 699 | goto fail; |
0ba41e44 | 700 | } |
f453ba04 DA |
701 | } |
702 | ||
e67aae79 | 703 | kfree(save_connectors); |
f453ba04 DA |
704 | kfree(save_encoders); |
705 | kfree(save_crtcs); | |
706 | return 0; | |
707 | ||
e67aae79 MM |
708 | fail: |
709 | /* Restore all previous data. */ | |
f453ba04 | 710 | count = 0; |
e67aae79 MM |
711 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
712 | *crtc = save_crtcs[count++]; | |
713 | } | |
e62fb64e | 714 | |
e67aae79 MM |
715 | count = 0; |
716 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
717 | *encoder = save_encoders[count++]; | |
e62fb64e | 718 | } |
e67aae79 | 719 | |
f453ba04 DA |
720 | count = 0; |
721 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
e67aae79 | 722 | *connector = save_connectors[count++]; |
f453ba04 | 723 | } |
e67aae79 MM |
724 | |
725 | kfree(save_connectors); | |
f453ba04 | 726 | kfree(save_encoders); |
e67aae79 | 727 | kfree(save_crtcs); |
f453ba04 DA |
728 | return ret; |
729 | } | |
730 | EXPORT_SYMBOL(drm_crtc_helper_set_config); | |
731 | ||
c9fb15f6 KP |
732 | static int drm_helper_choose_encoder_dpms(struct drm_encoder *encoder) |
733 | { | |
734 | int dpms = DRM_MODE_DPMS_OFF; | |
735 | struct drm_connector *connector; | |
736 | struct drm_device *dev = encoder->dev; | |
737 | ||
738 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) | |
739 | if (connector->encoder == encoder) | |
740 | if (connector->dpms < dpms) | |
741 | dpms = connector->dpms; | |
742 | return dpms; | |
743 | } | |
744 | ||
745 | static int drm_helper_choose_crtc_dpms(struct drm_crtc *crtc) | |
746 | { | |
747 | int dpms = DRM_MODE_DPMS_OFF; | |
748 | struct drm_connector *connector; | |
749 | struct drm_device *dev = crtc->dev; | |
750 | ||
751 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) | |
752 | if (connector->encoder && connector->encoder->crtc == crtc) | |
753 | if (connector->dpms < dpms) | |
754 | dpms = connector->dpms; | |
755 | return dpms; | |
756 | } | |
757 | ||
758 | /** | |
759 | * drm_helper_connector_dpms | |
760 | * @connector affected connector | |
761 | * @mode DPMS mode | |
762 | * | |
763 | * Calls the low-level connector DPMS function, then | |
764 | * calls appropriate encoder and crtc DPMS functions as well | |
765 | */ | |
766 | void drm_helper_connector_dpms(struct drm_connector *connector, int mode) | |
767 | { | |
768 | struct drm_encoder *encoder = connector->encoder; | |
769 | struct drm_crtc *crtc = encoder ? encoder->crtc : NULL; | |
770 | int old_dpms; | |
771 | ||
772 | if (mode == connector->dpms) | |
773 | return; | |
774 | ||
775 | old_dpms = connector->dpms; | |
776 | connector->dpms = mode; | |
777 | ||
778 | /* from off to on, do crtc then encoder */ | |
779 | if (mode < old_dpms) { | |
780 | if (crtc) { | |
781 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; | |
782 | if (crtc_funcs->dpms) | |
783 | (*crtc_funcs->dpms) (crtc, | |
784 | drm_helper_choose_crtc_dpms(crtc)); | |
785 | } | |
786 | if (encoder) { | |
787 | struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; | |
788 | if (encoder_funcs->dpms) | |
789 | (*encoder_funcs->dpms) (encoder, | |
790 | drm_helper_choose_encoder_dpms(encoder)); | |
791 | } | |
792 | } | |
793 | ||
794 | /* from on to off, do encoder then crtc */ | |
795 | if (mode > old_dpms) { | |
796 | if (encoder) { | |
797 | struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; | |
798 | if (encoder_funcs->dpms) | |
799 | (*encoder_funcs->dpms) (encoder, | |
800 | drm_helper_choose_encoder_dpms(encoder)); | |
801 | } | |
802 | if (crtc) { | |
803 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; | |
804 | if (crtc_funcs->dpms) | |
805 | (*crtc_funcs->dpms) (crtc, | |
806 | drm_helper_choose_crtc_dpms(crtc)); | |
807 | } | |
808 | } | |
809 | ||
810 | return; | |
811 | } | |
812 | EXPORT_SYMBOL(drm_helper_connector_dpms); | |
813 | ||
f453ba04 | 814 | int drm_helper_mode_fill_fb_struct(struct drm_framebuffer *fb, |
308e5bcb | 815 | struct drm_mode_fb_cmd2 *mode_cmd) |
f453ba04 | 816 | { |
01f2c773 VS |
817 | int i; |
818 | ||
f453ba04 DA |
819 | fb->width = mode_cmd->width; |
820 | fb->height = mode_cmd->height; | |
01f2c773 VS |
821 | for (i = 0; i < 4; i++) { |
822 | fb->pitches[i] = mode_cmd->pitches[i]; | |
823 | fb->offsets[i] = mode_cmd->offsets[i]; | |
824 | } | |
248dbc23 | 825 | drm_fb_get_bpp_depth(mode_cmd->pixel_format, &fb->depth, |
308e5bcb JB |
826 | &fb->bits_per_pixel); |
827 | fb->pixel_format = mode_cmd->pixel_format; | |
f453ba04 DA |
828 | |
829 | return 0; | |
830 | } | |
831 | EXPORT_SYMBOL(drm_helper_mode_fill_fb_struct); | |
832 | ||
833 | int drm_helper_resume_force_mode(struct drm_device *dev) | |
834 | { | |
835 | struct drm_crtc *crtc; | |
89347bb8 DJ |
836 | struct drm_encoder *encoder; |
837 | struct drm_encoder_helper_funcs *encoder_funcs; | |
838 | struct drm_crtc_helper_funcs *crtc_funcs; | |
f453ba04 DA |
839 | int ret; |
840 | ||
841 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
842 | ||
843 | if (!crtc->enabled) | |
844 | continue; | |
845 | ||
3c4fdcfb KH |
846 | ret = drm_crtc_helper_set_mode(crtc, &crtc->mode, |
847 | crtc->x, crtc->y, crtc->fb); | |
f453ba04 DA |
848 | |
849 | if (ret == false) | |
850 | DRM_ERROR("failed to set mode on crtc %p\n", crtc); | |
89347bb8 DJ |
851 | |
852 | /* Turn off outputs that were already powered off */ | |
853 | if (drm_helper_choose_crtc_dpms(crtc)) { | |
854 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
855 | ||
856 | if(encoder->crtc != crtc) | |
857 | continue; | |
858 | ||
859 | encoder_funcs = encoder->helper_private; | |
860 | if (encoder_funcs->dpms) | |
861 | (*encoder_funcs->dpms) (encoder, | |
862 | drm_helper_choose_encoder_dpms(encoder)); | |
89347bb8 | 863 | } |
817e631e CW |
864 | |
865 | crtc_funcs = crtc->helper_private; | |
866 | if (crtc_funcs->dpms) | |
867 | (*crtc_funcs->dpms) (crtc, | |
868 | drm_helper_choose_crtc_dpms(crtc)); | |
89347bb8 | 869 | } |
f453ba04 | 870 | } |
af4fcb57 ZY |
871 | /* disable the unused connectors while restoring the modesetting */ |
872 | drm_helper_disable_unused_functions(dev); | |
f453ba04 DA |
873 | return 0; |
874 | } | |
875 | EXPORT_SYMBOL(drm_helper_resume_force_mode); | |
eb1f8e4f | 876 | |
eb1f8e4f | 877 | #define DRM_OUTPUT_POLL_PERIOD (10*HZ) |
991ea75c | 878 | static void output_poll_execute(struct work_struct *work) |
eb1f8e4f | 879 | { |
991ea75c TH |
880 | struct delayed_work *delayed_work = to_delayed_work(work); |
881 | struct drm_device *dev = container_of(delayed_work, struct drm_device, mode_config.output_poll_work); | |
eb1f8e4f | 882 | struct drm_connector *connector; |
c5027dec | 883 | enum drm_connector_status old_status; |
eb1f8e4f | 884 | bool repoll = false, changed = false; |
eb1f8e4f | 885 | |
e58f637b CW |
886 | if (!drm_kms_helper_poll) |
887 | return; | |
888 | ||
eb1f8e4f DA |
889 | mutex_lock(&dev->mode_config.mutex); |
890 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
891 | ||
892 | /* if this is HPD or polled don't check it - | |
893 | TV out for instance */ | |
894 | if (!connector->polled) | |
895 | continue; | |
896 | ||
897 | else if (connector->polled & (DRM_CONNECTOR_POLL_CONNECT | DRM_CONNECTOR_POLL_DISCONNECT)) | |
898 | repoll = true; | |
899 | ||
900 | old_status = connector->status; | |
901 | /* if we are connected and don't want to poll for disconnect | |
902 | skip it */ | |
903 | if (old_status == connector_status_connected && | |
904 | !(connector->polled & DRM_CONNECTOR_POLL_DISCONNECT) && | |
905 | !(connector->polled & DRM_CONNECTOR_POLL_HPD)) | |
906 | continue; | |
907 | ||
c5027dec | 908 | connector->status = connector->funcs->detect(connector, false); |
0f16830e CW |
909 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] status updated from %d to %d\n", |
910 | connector->base.id, | |
911 | drm_get_connector_name(connector), | |
912 | old_status, connector->status); | |
c5027dec | 913 | if (old_status != connector->status) |
eb1f8e4f DA |
914 | changed = true; |
915 | } | |
916 | ||
917 | mutex_unlock(&dev->mode_config.mutex); | |
918 | ||
919 | if (changed) { | |
920 | /* send a uevent + call fbdev */ | |
921 | drm_sysfs_hotplug_event(dev); | |
922 | if (dev->mode_config.funcs->output_poll_changed) | |
923 | dev->mode_config.funcs->output_poll_changed(dev); | |
924 | } | |
925 | ||
9a919c46 TH |
926 | if (repoll) |
927 | queue_delayed_work(system_nrt_wq, delayed_work, DRM_OUTPUT_POLL_PERIOD); | |
eb1f8e4f DA |
928 | } |
929 | ||
fbf81762 DA |
930 | void drm_kms_helper_poll_disable(struct drm_device *dev) |
931 | { | |
932 | if (!dev->mode_config.poll_enabled) | |
933 | return; | |
991ea75c | 934 | cancel_delayed_work_sync(&dev->mode_config.output_poll_work); |
fbf81762 DA |
935 | } |
936 | EXPORT_SYMBOL(drm_kms_helper_poll_disable); | |
937 | ||
938 | void drm_kms_helper_poll_enable(struct drm_device *dev) | |
eb1f8e4f | 939 | { |
eb1f8e4f | 940 | bool poll = false; |
fbf81762 | 941 | struct drm_connector *connector; |
eb1f8e4f | 942 | |
e58f637b CW |
943 | if (!dev->mode_config.poll_enabled || !drm_kms_helper_poll) |
944 | return; | |
945 | ||
eb1f8e4f DA |
946 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
947 | if (connector->polled) | |
948 | poll = true; | |
949 | } | |
eb1f8e4f | 950 | |
9a919c46 TH |
951 | if (poll) |
952 | queue_delayed_work(system_nrt_wq, &dev->mode_config.output_poll_work, DRM_OUTPUT_POLL_PERIOD); | |
eb1f8e4f | 953 | } |
fbf81762 DA |
954 | EXPORT_SYMBOL(drm_kms_helper_poll_enable); |
955 | ||
956 | void drm_kms_helper_poll_init(struct drm_device *dev) | |
957 | { | |
991ea75c | 958 | INIT_DELAYED_WORK(&dev->mode_config.output_poll_work, output_poll_execute); |
fbf81762 DA |
959 | dev->mode_config.poll_enabled = true; |
960 | ||
961 | drm_kms_helper_poll_enable(dev); | |
962 | } | |
eb1f8e4f DA |
963 | EXPORT_SYMBOL(drm_kms_helper_poll_init); |
964 | ||
965 | void drm_kms_helper_poll_fini(struct drm_device *dev) | |
966 | { | |
fbf81762 | 967 | drm_kms_helper_poll_disable(dev); |
eb1f8e4f DA |
968 | } |
969 | EXPORT_SYMBOL(drm_kms_helper_poll_fini); | |
970 | ||
971 | void drm_helper_hpd_irq_event(struct drm_device *dev) | |
972 | { | |
973 | if (!dev->mode_config.poll_enabled) | |
974 | return; | |
e58f637b | 975 | |
991ea75c TH |
976 | /* kill timer and schedule immediate execution, this doesn't block */ |
977 | cancel_delayed_work(&dev->mode_config.output_poll_work); | |
e58f637b CW |
978 | if (drm_kms_helper_poll) |
979 | queue_delayed_work(system_nrt_wq, &dev->mode_config.output_poll_work, 0); | |
eb1f8e4f DA |
980 | } |
981 | EXPORT_SYMBOL(drm_helper_hpd_irq_event); |