blob: c078c753fb40bb7f8d40411c752073d4be2272f5 [file] [log] [blame]
Dave Airlief453ba02008-11-07 14:05:41 -08001/*
2 * Copyright (c) 2006-2008 Intel Corporation
3 * Copyright (c) 2007 Dave Airlie <airlied@linux.ie>
4 *
5 * DRM core CRTC related functions
6 *
7 * Permission to use, copy, modify, distribute, and sell this software and its
8 * documentation for any purpose is hereby granted without fee, provided that
9 * the above copyright notice appear in all copies and that both that copyright
10 * notice and this permission notice appear in supporting documentation, and
11 * that the name of the copyright holders not be used in advertising or
12 * publicity pertaining to distribution of the software without specific,
13 * written prior permission. The copyright holders make no representations
14 * about the suitability of this software for any purpose. It is provided "as
15 * is" without express or implied warranty.
16 *
17 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
18 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
19 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
20 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
21 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
22 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
23 * OF THIS SOFTWARE.
24 *
25 * Authors:
26 * Keith Packard
27 * Eric Anholt <eric@anholt.net>
28 * Dave Airlie <airlied@linux.ie>
29 * Jesse Barnes <jesse.barnes@intel.com>
30 */
31
Paul Gortmaker2d1a8a42011-08-30 18:16:33 -040032#include <linux/export.h>
33
Dave Airlief453ba02008-11-07 14:05:41 -080034#include "drmP.h"
35#include "drm_crtc.h"
36#include "drm_crtc_helper.h"
Dave Airlied50ba252009-09-23 14:44:08 +100037#include "drm_fb_helper.h"
Dave Airlief453ba02008-11-07 14:05:41 -080038
Chris Wilsone58f6372010-08-20 09:13:36 +010039static bool drm_kms_helper_poll = true;
40module_param_named(poll, drm_kms_helper_poll, bool, 0600);
41
yakui_zhao67149772009-04-02 11:52:12 +080042static 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
Dave Airlief453ba02008-11-07 14:05:41 -080062/**
Dave Airlie38651672010-03-30 05:34:13 +000063 * drm_helper_probe_single_connector_modes - get complete set of display modes
Dave Airlief453ba02008-11-07 14:05:41 -080064 * @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
Jesse Barnes40a518d2009-01-12 12:05:32 -080080 *
81 * RETURNS:
82 * Number of modes found on @connector.
Dave Airlief453ba02008-11-07 14:05:41 -080083 */
Jesse Barnes40a518d2009-01-12 12:05:32 -080084int drm_helper_probe_single_connector_modes(struct drm_connector *connector,
85 uint32_t maxX, uint32_t maxY)
Dave Airlief453ba02008-11-07 14:05:41 -080086{
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;
Jesse Barnes40a518d2009-01-12 12:05:32 -080091 int count = 0;
yakui_zhao67149772009-04-02 11:52:12 +080092 int mode_flags = 0;
Dave Airlief453ba02008-11-07 14:05:41 -080093
Jerome Glisse94401062010-07-15 15:43:25 -040094 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", connector->base.id,
95 drm_get_connector_name(connector));
Dave Airlief453ba02008-11-07 14:05:41 -080096 /* set all modes to the unverified state */
97 list_for_each_entry_safe(mode, t, &connector->modes, head)
98 mode->status = MODE_UNVERIFIED;
99
Dave Airlied50ba252009-09-23 14:44:08 +1000100 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);
Chris Wilsone58f6372010-08-20 09:13:36 +0100107 } else {
Chris Wilson930a9e22010-09-14 11:07:23 +0100108 connector->status = connector->funcs->detect(connector, true);
Chris Wilson551402a2010-09-06 23:53:47 +0100109 drm_kms_helper_poll_enable(dev);
Chris Wilsone58f6372010-08-20 09:13:36 +0100110 }
Dave Airlief453ba02008-11-07 14:05:41 -0800111
112 if (connector->status == connector_status_disconnected) {
Jerome Glisse94401062010-07-15 15:43:25 -0400113 DRM_DEBUG_KMS("[CONNECTOR:%d:%s] disconnected\n",
114 connector->base.id, drm_get_connector_name(connector));
Zhao Yakui72539832010-03-04 08:25:55 +0000115 drm_mode_connector_update_edid_property(connector, NULL);
Adam Jackson620f3782009-09-08 11:51:46 +1000116 goto prune;
Dave Airlief453ba02008-11-07 14:05:41 -0800117 }
118
Jesse Barnes40a518d2009-01-12 12:05:32 -0800119 count = (*connector_funcs->get_modes)(connector);
Chris Wilsonc7ef35a2010-09-05 16:55:25 +0100120 if (count == 0 && connector->status == connector_status_connected)
Adam Jackson9632b412009-11-23 14:23:07 -0500121 count = drm_add_modes_noedid(connector, 1024, 768);
Chris Wilsonc7ef35a2010-09-05 16:55:25 +0100122 if (count == 0)
123 goto prune;
Dave Airlief453ba02008-11-07 14:05:41 -0800124
Jesse Barnes40a518d2009-01-12 12:05:32 -0800125 drm_mode_connector_list_update(connector);
Dave Airlief453ba02008-11-07 14:05:41 -0800126
127 if (maxX && maxY)
128 drm_mode_validate_size(dev, &connector->modes, maxX,
129 maxY, 0);
yakui_zhao67149772009-04-02 11:52:12 +0800130
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
Dave Airlief453ba02008-11-07 14:05:41 -0800137 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
Adam Jackson620f3782009-09-08 11:51:46 +1000143prune:
Dave Airlief453ba02008-11-07 14:05:41 -0800144 drm_mode_prune_invalid(dev, &connector->modes, true);
145
Jesse Barnes40a518d2009-01-12 12:05:32 -0800146 if (list_empty(&connector->modes))
147 return 0;
Dave Airlief453ba02008-11-07 14:05:41 -0800148
149 drm_mode_sort(&connector->modes);
150
Jerome Glisse94401062010-07-15 15:43:25 -0400151 DRM_DEBUG_KMS("[CONNECTOR:%d:%s] probed modes :\n", connector->base.id,
152 drm_get_connector_name(connector));
Dave Airlief453ba02008-11-07 14:05:41 -0800153 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 }
Jesse Barnes40a518d2009-01-12 12:05:32 -0800159
160 return count;
Dave Airlief453ba02008-11-07 14:05:41 -0800161}
162EXPORT_SYMBOL(drm_helper_probe_single_connector_modes);
163
Dave Airlief453ba02008-11-07 14:05:41 -0800164/**
Keith Packardc9fb15f2009-05-30 20:42:28 -0700165 * 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 */
176bool 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}
185EXPORT_SYMBOL(drm_helper_encoder_in_use);
186
187/**
Dave Airlief453ba02008-11-07 14:05:41 -0800188 * 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 */
199bool 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)
Keith Packardc9fb15f2009-05-30 20:42:28 -0700205 if (encoder->crtc == crtc && drm_helper_encoder_in_use(encoder))
Dave Airlief453ba02008-11-07 14:05:41 -0800206 return true;
207 return false;
208}
209EXPORT_SYMBOL(drm_helper_crtc_in_use);
210
Ben Skeggs86a1b9d2010-07-01 16:49:57 +1000211static void
212drm_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
Dave Airlief453ba02008-11-07 14:05:41 -0800222/**
David John89347bb2009-12-31 12:00:46 +0530223 * drm_helper_disable_unused_functions - disable unused objects
Dave Airlief453ba02008-11-07 14:05:41 -0800224 * @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 */
232void drm_helper_disable_unused_functions(struct drm_device *dev)
233{
234 struct drm_encoder *encoder;
Dave Airliea3a05442009-08-31 15:16:30 +1000235 struct drm_connector *connector;
Dave Airlief453ba02008-11-07 14:05:41 -0800236 struct drm_crtc *crtc;
237
Dave Airliea3a05442009-08-31 15:16:30 +1000238 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
Dave Airlief453ba02008-11-07 14:05:41 -0800245 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
Dave Airlie929710212010-12-21 12:47:56 +1000246 if (!drm_helper_encoder_in_use(encoder)) {
Ben Skeggs86a1b9d2010-07-01 16:49:57 +1000247 drm_encoder_disable(encoder);
Dave Airlie9c552dd2009-09-02 14:00:11 +1000248 /* disconnector encoder from any connector */
249 encoder->crtc = NULL;
Dave Airliea3a05442009-08-31 15:16:30 +1000250 }
Dave Airlief453ba02008-11-07 14:05:41 -0800251 }
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) {
Alex Deucher5c8d7172010-06-11 17:04:35 -0400257 if (crtc_funcs->disable)
258 (*crtc_funcs->disable)(crtc);
259 else
260 (*crtc_funcs->dpms)(crtc, DRM_MODE_DPMS_OFF);
Dave Airlief453ba02008-11-07 14:05:41 -0800261 crtc->fb = NULL;
262 }
263 }
264}
265EXPORT_SYMBOL(drm_helper_disable_unused_functions);
266
Jesse Barnes7bec7562009-02-23 16:09:34 -0800267/**
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 */
274static 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
Joe Perchesfce7d612010-10-30 21:08:30 +0000281 WARN(!crtc, "checking null crtc?\n");
Jesse Barnes7bec7562009-02-23 16:09:34 -0800282
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 */
301static void
302drm_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)
Ben Skeggs86a1b9d2010-07-01 16:49:57 +1000311 drm_encoder_disable(encoder);
Jesse Barnes7bec7562009-02-23 16:09:34 -0800312 /* Disable encoders whose CRTC is about to change */
313 if (encoder_funcs->get_crtc &&
314 encoder->crtc != (*encoder_funcs->get_crtc)(encoder))
Ben Skeggs86a1b9d2010-07-01 16:49:57 +1000315 drm_encoder_disable(encoder);
Jesse Barnes7bec7562009-02-23 16:09:34 -0800316 }
317}
318
Dave Airlief453ba02008-11-07 14:05:41 -0800319/**
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 */
335bool drm_crtc_helper_set_mode(struct drm_crtc *crtc,
336 struct drm_display_mode *mode,
Kristian Høgsberg3c4fdcf2008-12-17 22:14:46 -0500337 int x, int y,
338 struct drm_framebuffer *old_fb)
Dave Airlief453ba02008-11-07 14:05:41 -0800339{
340 struct drm_device *dev = crtc->dev;
Mario Kleiner27641c32010-10-23 04:20:23 +0200341 struct drm_display_mode *adjusted_mode, saved_mode, saved_hwmode;
Dave Airlief453ba02008-11-07 14:05:41 -0800342 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
Dave Airlief453ba02008-11-07 14:05:41 -0800348 crtc->enabled = drm_helper_crtc_in_use(crtc);
Dave Airlief453ba02008-11-07 14:05:41 -0800349 if (!crtc->enabled)
350 return true;
351
Chris Wilson021a8452011-01-28 11:31:56 +0000352 adjusted_mode = drm_mode_duplicate(dev, mode);
353
Mario Kleiner27641c32010-10-23 04:20:23 +0200354 saved_hwmode = crtc->hwmode;
Dave Airlief453ba02008-11-07 14:05:41 -0800355 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
Dave Airlief453ba02008-11-07 14:05:41 -0800366 /* 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))) {
Adam Jackson836e53d2011-10-10 16:21:27 -0400377 DRM_DEBUG_KMS("Encoder fixup failed\n");
Dave Airlief453ba02008-11-07 14:05:41 -0800378 goto done;
379 }
380 }
381
382 if (!(ret = crtc_funcs->mode_fixup(crtc, mode, adjusted_mode))) {
Adam Jackson836e53d2011-10-10 16:21:27 -0400383 DRM_DEBUG_KMS("CRTC fixup failed\n");
Dave Airlief453ba02008-11-07 14:05:41 -0800384 goto done;
385 }
Jerome Glisse94401062010-07-15 15:43:25 -0400386 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
Dave Airlief453ba02008-11-07 14:05:41 -0800387
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
Jesse Barnes7bec7562009-02-23 16:09:34 -0800398 drm_crtc_prepare_encoders(dev);
399
Dave Airlief453ba02008-11-07 14:05:41 -0800400 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 */
Chris Wilson5c3b82e2009-02-11 13:25:09 +0000405 ret = !crtc_funcs->mode_set(crtc, mode, adjusted_mode, x, y, old_fb);
406 if (!ret)
407 goto done;
Dave Airlief453ba02008-11-07 14:05:41 -0800408
409 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
410
411 if (encoder->crtc != crtc)
412 continue;
413
Jerome Glisse94401062010-07-15 15:43:25 -0400414 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);
Dave Airlief453ba02008-11-07 14:05:41 -0800417 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
Mario Kleiner27641c32010-10-23 04:20:23 +0200434 /* 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
Dave Airlief453ba02008-11-07 14:05:41 -0800443 /* FIXME: add subpixel order */
444done:
Chris Wilson021a8452011-01-28 11:31:56 +0000445 drm_mode_destroy(dev, adjusted_mode);
Dave Airlief453ba02008-11-07 14:05:41 -0800446 if (!ret) {
Mario Kleiner27641c32010-10-23 04:20:23 +0200447 crtc->hwmode = saved_hwmode;
Dave Airlief453ba02008-11-07 14:05:41 -0800448 crtc->mode = saved_mode;
449 crtc->x = saved_x;
450 crtc->y = saved_y;
451 }
452
453 return ret;
454}
455EXPORT_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 */
475int drm_crtc_helper_set_config(struct drm_mode_set *set)
476{
477 struct drm_device *dev;
Maarten Maathuise67aae72009-08-27 10:18:29 +0200478 struct drm_crtc *save_crtcs, *new_crtc, *crtc;
479 struct drm_encoder *save_encoders, *new_encoder, *encoder;
Jesse Barnes7bec7562009-02-23 16:09:34 -0800480 struct drm_framebuffer *old_fb = NULL;
Jakob Bornecrantz4cb72b12009-08-03 13:43:59 +0100481 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 */
Maarten Maathuise67aae72009-08-27 10:18:29 +0200483 struct drm_connector *save_connectors, *connector;
Dave Airlief453ba02008-11-07 14:05:41 -0800484 int count = 0, ro, fail = 0;
485 struct drm_crtc_helper_funcs *crtc_funcs;
486 int ret = 0;
Keith Packardbf9dc102010-11-26 10:45:58 -0800487 int i;
Dave Airlief453ba02008-11-07 14:05:41 -0800488
Zhao Yakui58367ed2009-07-20 13:48:07 +0800489 DRM_DEBUG_KMS("\n");
Dave Airlief453ba02008-11-07 14:05:41 -0800490
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
Chris Wilsonede3ff52011-01-31 11:16:33 +0000502 if (!set->mode)
503 set->fb = NULL;
504
Jerome Glisse94401062010-07-15 15:43:25 -0400505 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 {
Chris Wilsonede3ff52011-01-31 11:16:33 +0000510 DRM_DEBUG_KMS("[CRTC:%d] [NOFB]\n", set->crtc->base.id);
511 set->mode = NULL;
512 set->num_connectors = 0;
Jerome Glisse94401062010-07-15 15:43:25 -0400513 }
Dave Airlief453ba02008-11-07 14:05:41 -0800514
515 dev = set->crtc->dev;
516
Maarten Maathuise67aae72009-08-27 10:18:29 +0200517 /* 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);
Dave Airlief453ba02008-11-07 14:05:41 -0800521 if (!save_crtcs)
522 return -ENOMEM;
523
Maarten Maathuise67aae72009-08-27 10:18:29 +0200524 save_encoders = kzalloc(dev->mode_config.num_encoder *
525 sizeof(struct drm_encoder), GFP_KERNEL);
Dave Airlief453ba02008-11-07 14:05:41 -0800526 if (!save_encoders) {
527 kfree(save_crtcs);
528 return -ENOMEM;
529 }
530
Maarten Maathuise67aae72009-08-27 10:18:29 +0200531 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
Dave Airlief453ba02008-11-07 14:05:41 -0800558 /* 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) {
Jesse Barnes712531b2009-01-09 13:56:14 -0800561 /* If we have no fb then treat it as a full mode set */
Jesse Barnes7bec7562009-02-23 16:09:34 -0800562 if (set->crtc->fb == NULL) {
Zhao Yakui58367ed2009-07-20 13:48:07 +0800563 DRM_DEBUG_KMS("crtc has no fb, full mode set\n");
Jesse Barnes712531b2009-01-09 13:56:14 -0800564 mode_changed = true;
Jakob Bornecrantz4cb72b12009-08-03 13:43:59 +0100565 } else if (set->fb == NULL) {
566 mode_changed = true;
Jesse Barnes46e48452011-06-24 12:19:26 -0700567 } 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;
Dave Airlie8dff4742010-02-11 14:28:58 +1000572 } else
Jesse Barnes712531b2009-01-09 13:56:14 -0800573 fb_changed = true;
Dave Airlief453ba02008-11-07 14:05:41 -0800574 }
575
576 if (set->x != set->crtc->x || set->y != set->crtc->y)
Jesse Barnes712531b2009-01-09 13:56:14 -0800577 fb_changed = true;
Dave Airlief453ba02008-11-07 14:05:41 -0800578
579 if (set->mode && !drm_mode_equal(set->mode, &set->crtc->mode)) {
Zhao Yakui58367ed2009-07-20 13:48:07 +0800580 DRM_DEBUG_KMS("modes are different, full mode set\n");
Dave Airlief453ba02008-11-07 14:05:41 -0800581 drm_mode_debug_printmodeline(&set->crtc->mode);
582 drm_mode_debug_printmodeline(set->mode);
Jesse Barnes712531b2009-01-09 13:56:14 -0800583 mode_changed = true;
Dave Airlief453ba02008-11-07 14:05:41 -0800584 }
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;
Dave Airlief453ba02008-11-07 14:05:41 -0800591 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) {
Zhao Yakui58367ed2009-07-20 13:48:07 +0800605 DRM_DEBUG_KMS("encoder changed, full mode switch\n");
Jesse Barnes712531b2009-01-09 13:56:14 -0800606 mode_changed = true;
Maarten Maathuisff846ab2009-08-19 00:56:45 +0200607 /* If the encoder is reused for another connector, then
608 * the appropriate crtc will be set later.
609 */
Maarten Maathuisff6fdbe2009-09-01 03:39:04 +0200610 if (connector->encoder)
611 connector->encoder->crtc = NULL;
Dave Airlief453ba02008-11-07 14:05:41 -0800612 connector->encoder = new_encoder;
613 }
614 }
615
616 if (fail) {
617 ret = -EINVAL;
Maarten Maathuise67aae72009-08-27 10:18:29 +0200618 goto fail;
Dave Airlief453ba02008-11-07 14:05:41 -0800619 }
620
621 count = 0;
622 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
623 if (!connector->encoder)
624 continue;
625
Dave Airlief453ba02008-11-07 14:05:41 -0800626 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 }
Jesse Barnes7bec7562009-02-23 16:09:34 -0800635
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;
Maarten Maathuise67aae72009-08-27 10:18:29 +0200640 goto fail;
Jesse Barnes7bec7562009-02-23 16:09:34 -0800641 }
Dave Airlief453ba02008-11-07 14:05:41 -0800642 if (new_crtc != connector->encoder->crtc) {
Zhao Yakui58367ed2009-07-20 13:48:07 +0800643 DRM_DEBUG_KMS("crtc changed, full mode switch\n");
Jesse Barnes712531b2009-01-09 13:56:14 -0800644 mode_changed = true;
Dave Airlief453ba02008-11-07 14:05:41 -0800645 connector->encoder->crtc = new_crtc;
646 }
Jerome Glisse94401062010-07-15 15:43:25 -0400647 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 }
Dave Airlief453ba02008-11-07 14:05:41 -0800655 }
656
657 /* mode_set_base is not a required function */
Jesse Barnes712531b2009-01-09 13:56:14 -0800658 if (fb_changed && !crtc_funcs->mode_set_base)
659 mode_changed = true;
Dave Airlief453ba02008-11-07 14:05:41 -0800660
Jesse Barnes712531b2009-01-09 13:56:14 -0800661 if (mode_changed) {
Chris Wilson9334ef72011-01-28 11:53:03 +0000662 set->crtc->enabled = drm_helper_crtc_in_use(set->crtc);
663 if (set->crtc->enabled) {
Zhao Yakui58367ed2009-07-20 13:48:07 +0800664 DRM_DEBUG_KMS("attempting to set mode from"
665 " userspace\n");
Dave Airlief453ba02008-11-07 14:05:41 -0800666 drm_mode_debug_printmodeline(set->mode);
Chris Wilson356ad3c2010-09-09 09:41:32 +0100667 old_fb = set->crtc->fb;
668 set->crtc->fb = set->fb;
Dave Airlief453ba02008-11-07 14:05:41 -0800669 if (!drm_crtc_helper_set_mode(set->crtc, set->mode,
Kristian Høgsberg3c4fdcf2008-12-17 22:14:46 -0500670 set->x, set->y,
671 old_fb)) {
Jerome Glisse94401062010-07-15 15:43:25 -0400672 DRM_ERROR("failed to set mode on [CRTC:%d]\n",
673 set->crtc->base.id);
Chris Wilson0ba41e42011-01-08 15:10:41 +0000674 set->crtc->fb = old_fb;
Dave Airlief453ba02008-11-07 14:05:41 -0800675 ret = -EINVAL;
Maarten Maathuise67aae72009-08-27 10:18:29 +0200676 goto fail;
Dave Airlief453ba02008-11-07 14:05:41 -0800677 }
Keith Packard811aaa52011-02-03 16:57:28 -0800678 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 }
Dave Airlief453ba02008-11-07 14:05:41 -0800684 }
685 drm_helper_disable_unused_functions(dev);
Jesse Barnes712531b2009-01-09 13:56:14 -0800686 } else if (fb_changed) {
Ben Skeggs9b1596a2009-09-18 10:43:52 +1000687 set->crtc->x = set->x;
688 set->crtc->y = set->y;
689
Kristian Høgsberg3c4fdcf2008-12-17 22:14:46 -0500690 old_fb = set->crtc->fb;
Dave Airlief453ba02008-11-07 14:05:41 -0800691 if (set->crtc->fb != set->fb)
692 set->crtc->fb = set->fb;
Chris Wilson5c3b82e2009-02-11 13:25:09 +0000693 ret = crtc_funcs->mode_set_base(set->crtc,
694 set->x, set->y, old_fb);
Chris Wilson0ba41e42011-01-08 15:10:41 +0000695 if (ret != 0) {
696 set->crtc->fb = old_fb;
Maarten Maathuise67aae72009-08-27 10:18:29 +0200697 goto fail;
Chris Wilson0ba41e42011-01-08 15:10:41 +0000698 }
Dave Airlief453ba02008-11-07 14:05:41 -0800699 }
700
Maarten Maathuise67aae72009-08-27 10:18:29 +0200701 kfree(save_connectors);
Dave Airlief453ba02008-11-07 14:05:41 -0800702 kfree(save_encoders);
703 kfree(save_crtcs);
704 return 0;
705
Maarten Maathuise67aae72009-08-27 10:18:29 +0200706fail:
707 /* Restore all previous data. */
Dave Airlief453ba02008-11-07 14:05:41 -0800708 count = 0;
Maarten Maathuise67aae72009-08-27 10:18:29 +0200709 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
710 *crtc = save_crtcs[count++];
711 }
Chris Wilsone62fb642009-02-11 16:39:21 +0000712
Maarten Maathuise67aae72009-08-27 10:18:29 +0200713 count = 0;
714 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
715 *encoder = save_encoders[count++];
Chris Wilsone62fb642009-02-11 16:39:21 +0000716 }
Maarten Maathuise67aae72009-08-27 10:18:29 +0200717
Dave Airlief453ba02008-11-07 14:05:41 -0800718 count = 0;
719 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
Maarten Maathuise67aae72009-08-27 10:18:29 +0200720 *connector = save_connectors[count++];
Dave Airlief453ba02008-11-07 14:05:41 -0800721 }
Maarten Maathuise67aae72009-08-27 10:18:29 +0200722
723 kfree(save_connectors);
Dave Airlief453ba02008-11-07 14:05:41 -0800724 kfree(save_encoders);
Maarten Maathuise67aae72009-08-27 10:18:29 +0200725 kfree(save_crtcs);
Dave Airlief453ba02008-11-07 14:05:41 -0800726 return ret;
727}
728EXPORT_SYMBOL(drm_crtc_helper_set_config);
729
Keith Packardc9fb15f2009-05-30 20:42:28 -0700730static 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
743static 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 */
764void 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}
810EXPORT_SYMBOL(drm_helper_connector_dpms);
811
Dave Airlief453ba02008-11-07 14:05:41 -0800812int 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}
823EXPORT_SYMBOL(drm_helper_mode_fill_fb_struct);
824
825int drm_helper_resume_force_mode(struct drm_device *dev)
826{
827 struct drm_crtc *crtc;
David John89347bb2009-12-31 12:00:46 +0530828 struct drm_encoder *encoder;
829 struct drm_encoder_helper_funcs *encoder_funcs;
830 struct drm_crtc_helper_funcs *crtc_funcs;
Dave Airlief453ba02008-11-07 14:05:41 -0800831 int ret;
832
833 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
834
835 if (!crtc->enabled)
836 continue;
837
Kristian Høgsberg3c4fdcf2008-12-17 22:14:46 -0500838 ret = drm_crtc_helper_set_mode(crtc, &crtc->mode,
839 crtc->x, crtc->y, crtc->fb);
Dave Airlief453ba02008-11-07 14:05:41 -0800840
841 if (ret == false)
842 DRM_ERROR("failed to set mode on crtc %p\n", crtc);
David John89347bb2009-12-31 12:00:46 +0530843
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));
David John89347bb2009-12-31 12:00:46 +0530855 }
Chris Wilson817e6312010-08-06 15:03:31 +0100856
857 crtc_funcs = crtc->helper_private;
858 if (crtc_funcs->dpms)
859 (*crtc_funcs->dpms) (crtc,
860 drm_helper_choose_crtc_dpms(crtc));
David John89347bb2009-12-31 12:00:46 +0530861 }
Dave Airlief453ba02008-11-07 14:05:41 -0800862 }
Zhao Yakuiaf4fcb52009-07-08 14:13:13 +0800863 /* disable the unused connectors while restoring the modesetting */
864 drm_helper_disable_unused_functions(dev);
Dave Airlief453ba02008-11-07 14:05:41 -0800865 return 0;
866}
867EXPORT_SYMBOL(drm_helper_resume_force_mode);
Dave Airlieeb1f8e42010-05-07 06:42:51 +0000868
Dave Airlieeb1f8e42010-05-07 06:42:51 +0000869#define DRM_OUTPUT_POLL_PERIOD (10*HZ)
Tejun Heo991ea752010-07-20 22:09:02 +0200870static void output_poll_execute(struct work_struct *work)
Dave Airlieeb1f8e42010-05-07 06:42:51 +0000871{
Tejun Heo991ea752010-07-20 22:09:02 +0200872 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);
Dave Airlieeb1f8e42010-05-07 06:42:51 +0000874 struct drm_connector *connector;
Keith Packardc5027de2010-11-26 10:45:59 -0800875 enum drm_connector_status old_status;
Dave Airlieeb1f8e42010-05-07 06:42:51 +0000876 bool repoll = false, changed = false;
Dave Airlieeb1f8e42010-05-07 06:42:51 +0000877
Chris Wilsone58f6372010-08-20 09:13:36 +0100878 if (!drm_kms_helper_poll)
879 return;
880
Dave Airlieeb1f8e42010-05-07 06:42:51 +0000881 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
Keith Packardc5027de2010-11-26 10:45:59 -0800900 connector->status = connector->funcs->detect(connector, false);
Chris Wilson0f168302010-12-21 22:49:28 +0000901 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);
Keith Packardc5027de2010-11-26 10:45:59 -0800905 if (old_status != connector->status)
Dave Airlieeb1f8e42010-05-07 06:42:51 +0000906 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
Tejun Heo9a919c42010-08-09 12:01:27 +0200918 if (repoll)
919 queue_delayed_work(system_nrt_wq, delayed_work, DRM_OUTPUT_POLL_PERIOD);
Dave Airlieeb1f8e42010-05-07 06:42:51 +0000920}
921
Dave Airliefbf81762010-06-01 09:09:06 +1000922void drm_kms_helper_poll_disable(struct drm_device *dev)
Dave Airlieeb1f8e42010-05-07 06:42:51 +0000923{
Dave Airliefbf81762010-06-01 09:09:06 +1000924 if (!dev->mode_config.poll_enabled)
925 return;
Tejun Heo991ea752010-07-20 22:09:02 +0200926 cancel_delayed_work_sync(&dev->mode_config.output_poll_work);
Dave Airliefbf81762010-06-01 09:09:06 +1000927}
928EXPORT_SYMBOL(drm_kms_helper_poll_disable);
929
930void drm_kms_helper_poll_enable(struct drm_device *dev)
931{
Dave Airlieeb1f8e42010-05-07 06:42:51 +0000932 bool poll = false;
Dave Airliefbf81762010-06-01 09:09:06 +1000933 struct drm_connector *connector;
Dave Airlieeb1f8e42010-05-07 06:42:51 +0000934
Chris Wilsone58f6372010-08-20 09:13:36 +0100935 if (!dev->mode_config.poll_enabled || !drm_kms_helper_poll)
936 return;
937
Dave Airlieeb1f8e42010-05-07 06:42:51 +0000938 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
939 if (connector->polled)
940 poll = true;
941 }
Dave Airlieeb1f8e42010-05-07 06:42:51 +0000942
Tejun Heo9a919c42010-08-09 12:01:27 +0200943 if (poll)
944 queue_delayed_work(system_nrt_wq, &dev->mode_config.output_poll_work, DRM_OUTPUT_POLL_PERIOD);
Dave Airlieeb1f8e42010-05-07 06:42:51 +0000945}
Dave Airliefbf81762010-06-01 09:09:06 +1000946EXPORT_SYMBOL(drm_kms_helper_poll_enable);
947
948void drm_kms_helper_poll_init(struct drm_device *dev)
949{
Tejun Heo991ea752010-07-20 22:09:02 +0200950 INIT_DELAYED_WORK(&dev->mode_config.output_poll_work, output_poll_execute);
Dave Airliefbf81762010-06-01 09:09:06 +1000951 dev->mode_config.poll_enabled = true;
952
953 drm_kms_helper_poll_enable(dev);
954}
Dave Airlieeb1f8e42010-05-07 06:42:51 +0000955EXPORT_SYMBOL(drm_kms_helper_poll_init);
956
957void drm_kms_helper_poll_fini(struct drm_device *dev)
958{
Dave Airliefbf81762010-06-01 09:09:06 +1000959 drm_kms_helper_poll_disable(dev);
Dave Airlieeb1f8e42010-05-07 06:42:51 +0000960}
961EXPORT_SYMBOL(drm_kms_helper_poll_fini);
962
963void drm_helper_hpd_irq_event(struct drm_device *dev)
964{
965 if (!dev->mode_config.poll_enabled)
966 return;
Chris Wilsone58f6372010-08-20 09:13:36 +0100967
Tejun Heo991ea752010-07-20 22:09:02 +0200968 /* kill timer and schedule immediate execution, this doesn't block */
969 cancel_delayed_work(&dev->mode_config.output_poll_work);
Chris Wilsone58f6372010-08-20 09:13:36 +0100970 if (drm_kms_helper_poll)
971 queue_delayed_work(system_nrt_wq, &dev->mode_config.output_poll_work, 0);
Dave Airlieeb1f8e42010-05-07 06:42:51 +0000972}
973EXPORT_SYMBOL(drm_helper_hpd_irq_event);