2 * Copyright (c) 2006-2008 Intel Corporation
3 * Copyright (c) 2007 Dave Airlie <airlied@linux.ie>
5 * DRM core CRTC related functions
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.
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
27 * Eric Anholt <eric@anholt.net>
28 * Dave Airlie <airlied@linux.ie>
29 * Jesse Barnes <jesse.barnes@intel.com>
32 #include <sys/cdefs.h>
33 __FBSDID("$FreeBSD$");
35 #include <sys/param.h>
36 #include <sys/systm.h>
37 #include <dev/drm2/drmP.h>
38 #include <dev/drm2/drm_crtc.h>
39 #include <dev/drm2/drm_fourcc.h>
40 #include <dev/drm2/drm_crtc_helper.h>
41 #include <dev/drm2/drm_fb_helper.h>
44 drm_fetch_cmdline_mode_from_kenv(struct drm_connector *connector,
45 struct drm_cmdline_mode *cmdline_mode)
47 char *tun_var_name, *tun_mode;
48 static const char tun_prefix[] = "drm_mode.";
52 tun_var_name = malloc(sizeof(tun_prefix) +
53 strlen(drm_get_connector_name(connector)), M_TEMP, M_WAITOK);
54 strcpy(tun_var_name, tun_prefix);
55 strcat(tun_var_name, drm_get_connector_name(connector));
56 tun_mode = getenv(tun_var_name);
57 if (tun_mode != NULL) {
58 res = drm_mode_parse_command_line_for_connector(tun_mode,
59 connector, cmdline_mode);
62 free(tun_var_name, M_TEMP);
66 static bool drm_kms_helper_poll = true;
68 static void drm_mode_validate_flag(struct drm_connector *connector,
71 struct drm_display_mode *mode, *t;
73 if (flags == (DRM_MODE_FLAG_DBLSCAN | DRM_MODE_FLAG_INTERLACE))
76 list_for_each_entry_safe(mode, t, &connector->modes, head) {
77 if ((mode->flags & DRM_MODE_FLAG_INTERLACE) &&
78 !(flags & DRM_MODE_FLAG_INTERLACE))
79 mode->status = MODE_NO_INTERLACE;
80 if ((mode->flags & DRM_MODE_FLAG_DBLSCAN) &&
81 !(flags & DRM_MODE_FLAG_DBLSCAN))
82 mode->status = MODE_NO_DBLESCAN;
89 * drm_helper_probe_single_connector_modes - get complete set of display modes
91 * @maxX: max width for modes
92 * @maxY: max height for modes
95 * Caller must hold mode config lock.
97 * Based on @dev's mode_config layout, scan all the connectors and try to detect
98 * modes on them. Modes will first be added to the connector's probed_modes
99 * list, then culled (based on validity and the @maxX, @maxY parameters) and
100 * put into the normal modes list.
102 * Intended to be used either at bootup time or when major configuration
103 * changes have occurred.
105 * FIXME: take into account monitor limits
108 * Number of modes found on @connector.
110 int drm_helper_probe_single_connector_modes(struct drm_connector *connector,
111 uint32_t maxX, uint32_t maxY)
113 struct drm_device *dev = connector->dev;
114 struct drm_display_mode *mode, *t;
115 struct drm_connector_helper_funcs *connector_funcs =
116 connector->helper_private;
117 struct drm_cmdline_mode cmdline_mode;
121 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", connector->base.id,
122 drm_get_connector_name(connector));
123 /* set all modes to the unverified state */
124 list_for_each_entry_safe(mode, t, &connector->modes, head)
125 mode->status = MODE_UNVERIFIED;
127 if (connector->force) {
128 if (connector->force == DRM_FORCE_ON)
129 connector->status = connector_status_connected;
131 connector->status = connector_status_disconnected;
132 if (connector->funcs->force)
133 connector->funcs->force(connector);
135 connector->status = connector->funcs->detect(connector, true);
136 drm_kms_helper_poll_enable(dev);
139 if (connector->status == connector_status_disconnected) {
140 DRM_DEBUG_KMS("[CONNECTOR:%d:%s] disconnected\n",
141 connector->base.id, drm_get_connector_name(connector));
142 drm_mode_connector_update_edid_property(connector, NULL);
146 count = (*connector_funcs->get_modes)(connector);
147 if (count == 0 && drm_fetch_cmdline_mode_from_kenv(connector,
149 mode = drm_mode_create_from_cmdline_mode(dev,
153 "[CONNECTOR:%d:%s] found manual override ",
155 drm_get_connector_name(connector));
156 drm_mode_debug_printmodeline(mode);
157 drm_mode_probed_add(connector, mode);
161 "[CONNECTOR:%d:%s] manual override mode: parse error\n",
163 drm_get_connector_name(connector));
166 if (count == 0 && connector->status == connector_status_connected)
167 count = drm_add_modes_noedid(connector, 1024, 768);
171 drm_mode_connector_list_update(connector);
174 drm_mode_validate_size(dev, &connector->modes, maxX,
177 if (connector->interlace_allowed)
178 mode_flags |= DRM_MODE_FLAG_INTERLACE;
179 if (connector->doublescan_allowed)
180 mode_flags |= DRM_MODE_FLAG_DBLSCAN;
181 drm_mode_validate_flag(connector, mode_flags);
183 list_for_each_entry_safe(mode, t, &connector->modes, head) {
184 if (mode->status == MODE_OK)
185 mode->status = connector_funcs->mode_valid(connector,
190 drm_mode_prune_invalid(dev, &connector->modes, true);
192 if (list_empty(&connector->modes))
195 drm_mode_sort(&connector->modes);
197 DRM_DEBUG_KMS("[CONNECTOR:%d:%s] probed modes :\n", connector->base.id,
198 drm_get_connector_name(connector));
199 list_for_each_entry_safe(mode, t, &connector->modes, head) {
200 mode->vrefresh = drm_mode_vrefresh(mode);
202 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
203 drm_mode_debug_printmodeline(mode);
210 * drm_helper_encoder_in_use - check if a given encoder is in use
211 * @encoder: encoder to check
214 * Caller must hold mode config lock.
216 * Walk @encoders's DRM device's mode_config and see if it's in use.
219 * True if @encoder is part of the mode_config, false otherwise.
221 bool drm_helper_encoder_in_use(struct drm_encoder *encoder)
223 struct drm_connector *connector;
224 struct drm_device *dev = encoder->dev;
225 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
226 if (connector->encoder == encoder)
232 * drm_helper_crtc_in_use - check if a given CRTC is in a mode_config
233 * @crtc: CRTC to check
236 * Caller must hold mode config lock.
238 * Walk @crtc's DRM device's mode_config and see if it's in use.
241 * True if @crtc is part of the mode_config, false otherwise.
243 bool drm_helper_crtc_in_use(struct drm_crtc *crtc)
245 struct drm_encoder *encoder;
246 struct drm_device *dev = crtc->dev;
247 /* FIXME: Locking around list access? */
248 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
249 if (encoder->crtc == crtc && drm_helper_encoder_in_use(encoder))
255 drm_encoder_disable(struct drm_encoder *encoder)
257 struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private;
259 if (encoder_funcs->disable)
260 (*encoder_funcs->disable)(encoder);
262 (*encoder_funcs->dpms)(encoder, DRM_MODE_DPMS_OFF);
266 * drm_helper_disable_unused_functions - disable unused objects
270 * Caller must hold mode config lock.
272 * If an connector or CRTC isn't part of @dev's mode_config, it can be disabled
273 * by calling its dpms function, which should power it off.
275 void drm_helper_disable_unused_functions(struct drm_device *dev)
277 struct drm_encoder *encoder;
278 struct drm_connector *connector;
279 struct drm_crtc *crtc;
281 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
282 if (!connector->encoder)
284 if (connector->status == connector_status_disconnected)
285 connector->encoder = NULL;
288 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
289 if (!drm_helper_encoder_in_use(encoder)) {
290 drm_encoder_disable(encoder);
291 /* disconnector encoder from any connector */
292 encoder->crtc = NULL;
296 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
297 struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
298 crtc->enabled = drm_helper_crtc_in_use(crtc);
299 if (!crtc->enabled) {
300 if (crtc_funcs->disable)
301 (*crtc_funcs->disable)(crtc);
303 (*crtc_funcs->dpms)(crtc, DRM_MODE_DPMS_OFF);
310 * drm_encoder_crtc_ok - can a given crtc drive a given encoder?
311 * @encoder: encoder to test
312 * @crtc: crtc to test
314 * Return false if @encoder can't be driven by @crtc, true otherwise.
316 static bool drm_encoder_crtc_ok(struct drm_encoder *encoder,
317 struct drm_crtc *crtc)
319 struct drm_device *dev;
320 struct drm_crtc *tmp;
324 printf("checking null crtc?\n");
328 list_for_each_entry(tmp, &dev->mode_config.crtc_list, head) {
334 if (encoder->possible_crtcs & crtc_mask)
340 * Check the CRTC we're going to map each output to vs. its current
341 * CRTC. If they don't match, we have to disable the output and the CRTC
342 * since the driver will have to re-route things.
345 drm_crtc_prepare_encoders(struct drm_device *dev)
347 struct drm_encoder_helper_funcs *encoder_funcs;
348 struct drm_encoder *encoder;
350 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
351 encoder_funcs = encoder->helper_private;
352 /* Disable unused encoders */
353 if (encoder->crtc == NULL)
354 drm_encoder_disable(encoder);
355 /* Disable encoders whose CRTC is about to change */
356 if (encoder_funcs->get_crtc &&
357 encoder->crtc != (*encoder_funcs->get_crtc)(encoder))
358 drm_encoder_disable(encoder);
363 * drm_crtc_set_mode - set a mode
364 * @crtc: CRTC to program
370 * Caller must hold mode config lock.
372 * Try to set @mode on @crtc. Give @crtc and its associated connectors a chance
373 * to fixup or reject the mode prior to trying to set it.
376 * True if the mode was set successfully, or false otherwise.
378 bool drm_crtc_helper_set_mode(struct drm_crtc *crtc,
379 struct drm_display_mode *mode,
381 struct drm_framebuffer *old_fb)
383 struct drm_device *dev = crtc->dev;
384 struct drm_display_mode *adjusted_mode, saved_mode, saved_hwmode;
385 struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
386 struct drm_encoder_helper_funcs *encoder_funcs;
387 int saved_x, saved_y;
388 struct drm_encoder *encoder;
391 crtc->enabled = drm_helper_crtc_in_use(crtc);
395 adjusted_mode = drm_mode_duplicate(dev, mode);
399 saved_hwmode = crtc->hwmode;
400 saved_mode = crtc->mode;
404 /* Update crtc values up front so the driver can rely on them for mode
411 /* Pass our mode to the connectors and the CRTC to give them a chance to
412 * adjust it according to limitations or connector properties, and also
413 * a chance to reject the mode entirely.
415 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
417 if (encoder->crtc != crtc)
419 encoder_funcs = encoder->helper_private;
420 if (!(ret = encoder_funcs->mode_fixup(encoder, mode,
426 if (!(ret = crtc_funcs->mode_fixup(crtc, mode, adjusted_mode))) {
429 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
431 /* Prepare the encoders and CRTCs before setting the mode. */
432 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
434 if (encoder->crtc != crtc)
436 encoder_funcs = encoder->helper_private;
437 /* Disable the encoders as the first thing we do. */
438 encoder_funcs->prepare(encoder);
441 drm_crtc_prepare_encoders(dev);
443 crtc_funcs->prepare(crtc);
445 /* Set up the DPLL and any encoders state that needs to adjust or depend
448 ret = !crtc_funcs->mode_set(crtc, mode, adjusted_mode, x, y, old_fb);
452 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
454 if (encoder->crtc != crtc)
457 DRM_DEBUG_KMS("[ENCODER:%d:%s] set [MODE:%d:%s]\n",
458 encoder->base.id, drm_get_encoder_name(encoder),
459 mode->base.id, mode->name);
460 encoder_funcs = encoder->helper_private;
461 encoder_funcs->mode_set(encoder, mode, adjusted_mode);
464 /* Now enable the clocks, plane, pipe, and connectors that we set up. */
465 crtc_funcs->commit(crtc);
467 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
469 if (encoder->crtc != crtc)
472 encoder_funcs = encoder->helper_private;
473 encoder_funcs->commit(encoder);
477 /* Store real post-adjustment hardware mode. */
478 crtc->hwmode = *adjusted_mode;
480 /* Calculate and store various constants which
481 * are later needed by vblank and swap-completion
482 * timestamping. They are derived from true hwmode.
484 drm_calc_timestamping_constants(crtc);
486 /* FIXME: add subpixel order */
488 drm_mode_destroy(dev, adjusted_mode);
490 crtc->hwmode = saved_hwmode;
491 crtc->mode = saved_mode;
500 drm_crtc_helper_disable(struct drm_crtc *crtc)
502 struct drm_device *dev = crtc->dev;
503 struct drm_connector *connector;
504 struct drm_encoder *encoder;
506 /* Decouple all encoders and their attached connectors from this crtc */
507 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
508 if (encoder->crtc != crtc)
511 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
512 if (connector->encoder != encoder)
515 connector->encoder = NULL;
519 drm_helper_disable_unused_functions(dev);
524 * drm_crtc_helper_set_config - set a new config from userspace
525 * @crtc: CRTC to setup
526 * @crtc_info: user provided configuration
527 * @new_mode: new mode to set
528 * @connector_set: set of connectors for the new config
529 * @fb: new framebuffer
532 * Caller must hold mode config lock.
534 * Setup a new configuration, provided by the user in @crtc_info, and enable
540 int drm_crtc_helper_set_config(struct drm_mode_set *set)
542 struct drm_device *dev;
543 struct drm_crtc *save_crtcs, *new_crtc, *crtc;
544 struct drm_encoder *save_encoders, *new_encoder, *encoder;
545 struct drm_framebuffer *old_fb = NULL;
546 bool mode_changed = false; /* if true do a full mode set */
547 bool fb_changed = false; /* if true and !mode_changed just do a flip */
548 struct drm_connector *save_connectors, *connector;
549 int count = 0, ro, fail = 0;
550 struct drm_crtc_helper_funcs *crtc_funcs;
551 struct drm_mode_set save_set;
563 if (!set->crtc->helper_private)
566 crtc_funcs = set->crtc->helper_private;
572 DRM_DEBUG_KMS("[CRTC:%d] [FB:%d] #connectors=%d (x y) (%i %i)\n",
573 set->crtc->base.id, set->fb->base.id,
574 (int)set->num_connectors, set->x, set->y);
576 DRM_DEBUG_KMS("[CRTC:%d] [NOFB]\n", set->crtc->base.id);
577 return drm_crtc_helper_disable(set->crtc);
580 dev = set->crtc->dev;
582 /* Allocate space for the backup of all (non-pointer) crtc, encoder and
584 save_crtcs = malloc(dev->mode_config.num_crtc * sizeof(struct drm_crtc),
585 DRM_MEM_KMS, M_WAITOK | M_ZERO);
586 save_encoders = malloc(dev->mode_config.num_encoder *
587 sizeof(struct drm_encoder), DRM_MEM_KMS, M_WAITOK | M_ZERO);
588 save_connectors = malloc(dev->mode_config.num_connector *
589 sizeof(struct drm_connector), DRM_MEM_KMS, M_WAITOK | M_ZERO);
591 /* Copy data. Note that driver private data is not affected.
592 * Should anything bad happen only the expected state is
593 * restored, not the drivers personal bookkeeping.
596 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
597 save_crtcs[count++] = *crtc;
601 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
602 save_encoders[count++] = *encoder;
606 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
607 save_connectors[count++] = *connector;
610 save_set.crtc = set->crtc;
611 save_set.mode = &set->crtc->mode;
612 save_set.x = set->crtc->x;
613 save_set.y = set->crtc->y;
614 save_set.fb = set->crtc->fb;
616 /* We should be able to check here if the fb has the same properties
617 * and then just flip_or_move it */
618 if (set->crtc->fb != set->fb) {
619 /* If we have no fb then treat it as a full mode set */
620 if (set->crtc->fb == NULL) {
621 DRM_DEBUG_KMS("crtc has no fb, full mode set\n");
623 } else if (set->fb == NULL) {
629 if (set->x != set->crtc->x || set->y != set->crtc->y)
632 if (set->mode && !drm_mode_equal(set->mode, &set->crtc->mode)) {
633 DRM_DEBUG_KMS("modes are different, full mode set\n");
634 drm_mode_debug_printmodeline(&set->crtc->mode);
635 drm_mode_debug_printmodeline(set->mode);
639 /* a) traverse passed in connector list and get encoders for them */
641 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
642 struct drm_connector_helper_funcs *connector_funcs =
643 connector->helper_private;
644 new_encoder = connector->encoder;
645 for (ro = 0; ro < set->num_connectors; ro++) {
646 if (set->connectors[ro] == connector) {
647 new_encoder = connector_funcs->best_encoder(connector);
648 /* if we can't get an encoder for a connector
649 we are setting now - then fail */
650 if (new_encoder == NULL)
651 /* don't break so fail path works correct */
657 if (new_encoder != connector->encoder) {
658 DRM_DEBUG_KMS("encoder changed, full mode switch\n");
660 /* If the encoder is reused for another connector, then
661 * the appropriate crtc will be set later.
663 if (connector->encoder)
664 connector->encoder->crtc = NULL;
665 connector->encoder = new_encoder;
675 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
676 if (!connector->encoder)
679 if (connector->encoder->crtc == set->crtc)
682 new_crtc = connector->encoder->crtc;
684 for (ro = 0; ro < set->num_connectors; ro++) {
685 if (set->connectors[ro] == connector)
686 new_crtc = set->crtc;
689 /* Make sure the new CRTC will work with the encoder */
691 !drm_encoder_crtc_ok(connector->encoder, new_crtc)) {
695 if (new_crtc != connector->encoder->crtc) {
696 DRM_DEBUG_KMS("crtc changed, full mode switch\n");
698 connector->encoder->crtc = new_crtc;
701 DRM_DEBUG_KMS("[CONNECTOR:%d:%s] to [CRTC:%d]\n",
702 connector->base.id, drm_get_connector_name(connector),
705 DRM_DEBUG_KMS("[CONNECTOR:%d:%s] to [NOCRTC]\n",
706 connector->base.id, drm_get_connector_name(connector));
710 /* mode_set_base is not a required function */
711 if (fb_changed && !crtc_funcs->mode_set_base)
715 set->crtc->enabled = drm_helper_crtc_in_use(set->crtc);
716 if (set->crtc->enabled) {
717 DRM_DEBUG_KMS("attempting to set mode from"
719 drm_mode_debug_printmodeline(set->mode);
720 old_fb = set->crtc->fb;
721 set->crtc->fb = set->fb;
722 if (!drm_crtc_helper_set_mode(set->crtc, set->mode,
725 DRM_ERROR("failed to set mode on [CRTC:%d]\n",
727 set->crtc->fb = old_fb;
731 DRM_DEBUG_KMS("Setting connector DPMS state to on\n");
732 for (i = 0; i < set->num_connectors; i++) {
733 DRM_DEBUG_KMS("\t[CONNECTOR:%d:%s] set DPMS on\n", set->connectors[i]->base.id,
734 drm_get_connector_name(set->connectors[i]));
735 set->connectors[i]->dpms = DRM_MODE_DPMS_ON;
738 drm_helper_disable_unused_functions(dev);
739 } else if (fb_changed) {
740 set->crtc->x = set->x;
741 set->crtc->y = set->y;
743 old_fb = set->crtc->fb;
744 if (set->crtc->fb != set->fb)
745 set->crtc->fb = set->fb;
746 ret = crtc_funcs->mode_set_base(set->crtc,
747 set->x, set->y, old_fb);
749 set->crtc->fb = old_fb;
754 free(save_connectors, DRM_MEM_KMS);
755 free(save_encoders, DRM_MEM_KMS);
756 free(save_crtcs, DRM_MEM_KMS);
760 /* Restore all previous data. */
762 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
763 *crtc = save_crtcs[count++];
767 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
768 *encoder = save_encoders[count++];
772 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
773 *connector = save_connectors[count++];
776 /* Try to restore the config */
778 !drm_crtc_helper_set_mode(save_set.crtc, save_set.mode, save_set.x,
779 save_set.y, save_set.fb))
780 DRM_ERROR("failed to restore config after modeset failure\n");
782 free(save_connectors, DRM_MEM_KMS);
783 free(save_encoders, DRM_MEM_KMS);
784 free(save_crtcs, DRM_MEM_KMS);
788 static int drm_helper_choose_encoder_dpms(struct drm_encoder *encoder)
790 int dpms = DRM_MODE_DPMS_OFF;
791 struct drm_connector *connector;
792 struct drm_device *dev = encoder->dev;
794 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
795 if (connector->encoder == encoder)
796 if (connector->dpms < dpms)
797 dpms = connector->dpms;
801 static int drm_helper_choose_crtc_dpms(struct drm_crtc *crtc)
803 int dpms = DRM_MODE_DPMS_OFF;
804 struct drm_connector *connector;
805 struct drm_device *dev = crtc->dev;
807 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
808 if (connector->encoder && connector->encoder->crtc == crtc)
809 if (connector->dpms < dpms)
810 dpms = connector->dpms;
815 * drm_helper_connector_dpms
816 * @connector affected connector
819 * Calls the low-level connector DPMS function, then
820 * calls appropriate encoder and crtc DPMS functions as well
822 void drm_helper_connector_dpms(struct drm_connector *connector, int mode)
824 struct drm_encoder *encoder = connector->encoder;
825 struct drm_crtc *crtc = encoder ? encoder->crtc : NULL;
828 if (mode == connector->dpms)
831 old_dpms = connector->dpms;
832 connector->dpms = mode;
834 /* from off to on, do crtc then encoder */
835 if (mode < old_dpms) {
837 struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
838 if (crtc_funcs->dpms)
839 (*crtc_funcs->dpms) (crtc,
840 drm_helper_choose_crtc_dpms(crtc));
843 struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private;
844 if (encoder_funcs->dpms)
845 (*encoder_funcs->dpms) (encoder,
846 drm_helper_choose_encoder_dpms(encoder));
850 /* from on to off, do encoder then crtc */
851 if (mode > old_dpms) {
853 struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private;
854 if (encoder_funcs->dpms)
855 (*encoder_funcs->dpms) (encoder,
856 drm_helper_choose_encoder_dpms(encoder));
859 struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
860 if (crtc_funcs->dpms)
861 (*crtc_funcs->dpms) (crtc,
862 drm_helper_choose_crtc_dpms(crtc));
869 int drm_helper_mode_fill_fb_struct(struct drm_framebuffer *fb,
870 struct drm_mode_fb_cmd2 *mode_cmd)
874 fb->width = mode_cmd->width;
875 fb->height = mode_cmd->height;
876 for (i = 0; i < 4; i++) {
877 fb->pitches[i] = mode_cmd->pitches[i];
878 fb->offsets[i] = mode_cmd->offsets[i];
880 drm_fb_get_bpp_depth(mode_cmd->pixel_format, &fb->depth,
881 &fb->bits_per_pixel);
882 fb->pixel_format = mode_cmd->pixel_format;
887 int drm_helper_resume_force_mode(struct drm_device *dev)
889 struct drm_crtc *crtc;
890 struct drm_encoder *encoder;
891 struct drm_encoder_helper_funcs *encoder_funcs;
892 struct drm_crtc_helper_funcs *crtc_funcs;
895 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
900 ret = drm_crtc_helper_set_mode(crtc, &crtc->mode,
901 crtc->x, crtc->y, crtc->fb);
904 DRM_ERROR("failed to set mode on crtc %p\n", crtc);
906 /* Turn off outputs that were already powered off */
907 if (drm_helper_choose_crtc_dpms(crtc)) {
908 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
910 if(encoder->crtc != crtc)
913 encoder_funcs = encoder->helper_private;
914 if (encoder_funcs->dpms)
915 (*encoder_funcs->dpms) (encoder,
916 drm_helper_choose_encoder_dpms(encoder));
919 crtc_funcs = crtc->helper_private;
920 if (crtc_funcs->dpms)
921 (*crtc_funcs->dpms) (crtc,
922 drm_helper_choose_crtc_dpms(crtc));
925 /* disable the unused connectors while restoring the modesetting */
926 drm_helper_disable_unused_functions(dev);
930 #define DRM_OUTPUT_POLL_PERIOD (10 * hz)
931 static void output_poll_execute(void *ctx, int pending)
933 struct drm_device *dev;
934 struct drm_connector *connector;
935 enum drm_connector_status old_status;
936 bool repoll = false, changed = false;
938 if (!drm_kms_helper_poll)
943 sx_xlock(&dev->mode_config.mutex);
944 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
946 /* if this is HPD or polled don't check it -
947 TV out for instance */
948 if (!connector->polled)
951 else if (connector->polled & (DRM_CONNECTOR_POLL_CONNECT |
952 DRM_CONNECTOR_POLL_DISCONNECT))
955 old_status = connector->status;
956 /* if we are connected and don't want to poll for disconnect
958 if (old_status == connector_status_connected &&
959 !(connector->polled & DRM_CONNECTOR_POLL_DISCONNECT) &&
960 !(connector->polled & DRM_CONNECTOR_POLL_HPD))
963 connector->status = connector->funcs->detect(connector, false);
964 DRM_DEBUG_KMS("[CONNECTOR:%d:%s] status updated from %d to %d\n",
966 drm_get_connector_name(connector),
967 old_status, connector->status);
968 if (old_status != connector->status)
972 sx_xunlock(&dev->mode_config.mutex);
976 /* send a uevent + call fbdev */
977 drm_sysfs_hotplug_event(dev);
979 if (dev->mode_config.funcs->output_poll_changed)
980 dev->mode_config.funcs->output_poll_changed(dev);
984 taskqueue_enqueue_timeout(taskqueue_thread,
985 &dev->mode_config.output_poll_task,
986 DRM_OUTPUT_POLL_PERIOD);
990 void drm_kms_helper_poll_disable(struct drm_device *dev)
992 if (!dev->mode_config.poll_enabled)
994 taskqueue_cancel_timeout(taskqueue_thread,
995 &dev->mode_config.output_poll_task, NULL);
998 void drm_kms_helper_poll_enable(struct drm_device *dev)
1001 struct drm_connector *connector;
1003 if (!dev->mode_config.poll_enabled || !drm_kms_helper_poll)
1006 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
1007 if (connector->polled)
1012 taskqueue_enqueue_timeout(taskqueue_thread,
1013 &dev->mode_config.output_poll_task, DRM_OUTPUT_POLL_PERIOD);
1017 void drm_kms_helper_poll_init(struct drm_device *dev)
1020 TIMEOUT_TASK_INIT(taskqueue_thread, &dev->mode_config.output_poll_task,
1021 0, output_poll_execute, dev);
1022 dev->mode_config.poll_enabled = true;
1024 drm_kms_helper_poll_enable(dev);
1027 void drm_kms_helper_poll_fini(struct drm_device *dev)
1029 drm_kms_helper_poll_disable(dev);
1032 void drm_helper_hpd_irq_event(struct drm_device *dev)
1034 if (!dev->mode_config.poll_enabled)
1037 /* kill timer and schedule immediate execution, this doesn't block */
1038 taskqueue_cancel_timeout(taskqueue_thread,
1039 &dev->mode_config.output_poll_task, NULL);
1040 if (drm_kms_helper_poll)
1041 taskqueue_enqueue_timeout(taskqueue_thread,
1042 &dev->mode_config.output_poll_task, 0);