pci/drm/drm_crtc_helper.c

264  * drm_crtc_helper_set_mode - internal helper to set a mode
271  * Try to set @mode on @crtc.  Give @crtc and its associated connectors a chance
272  * to fixup or reject the mode prior to trying to set it. This is an internal
281  * True if the mode was set successfully, false otherwise.
393 		DRM_DEBUG_KMS("[ENCODER:%d:%s] set [MODE:%s]\n",
399 	/* Now enable the clocks, plane, pipe, and connectors that we set up. */
517  * drm_crtc_helper_set_config - set a new config from userspace
518  * @set: mode set configuration
541  * performs a full mode set sequence by calling the ->prepare(), ->mode_set()
554 int drm_crtc_helper_set_config(struct drm_mode_set *set,
560 	bool mode_changed = false; /* if true do a full mode set */
572 	BUG_ON(!set);
573 	BUG_ON(!set->crtc);
574 	BUG_ON(!set->crtc->helper_private);
577 	BUG_ON(!set->mode && set->fb);
578 	BUG_ON(set->fb && set->num_connectors == 0);
580 	crtc_funcs = set->crtc->helper_private;
582 	dev = set->crtc->dev;
585 	if (!set->mode)
586 		set->fb = NULL;
588 	if (set->fb) {
590 			      set->crtc->base.id, set->crtc->name,
591 			      set->fb->base.id,
592 			      (int)set->num_connectors, set->x, set->y);
595 			      set->crtc->base.id, set->crtc->name);
596 		drm_crtc_helper_disable(set->crtc);
634 	save_set.crtc = set->crtc;
635 	save_set.mode = &set->crtc->mode;
636 	save_set.x = set->crtc->x;
637 	save_set.y = set->crtc->y;
638 	save_set.fb = set->crtc->primary->fb;
642 	if (set->crtc->primary->fb != set->fb) {
643 		/* If we have no fb then treat it as a full mode set */
644 		if (set->crtc->primary->fb == NULL) {
645 			DRM_DEBUG_KMS("crtc has no fb, full mode set\n");
647 		} else if (set->fb->format != set->crtc->primary->fb->format) {
653 	if (set->x != set->crtc->x || set->y != set->crtc->y)
656 	if (!drm_mode_equal(set->mode, &set->crtc->mode)) {
657 		DRM_DEBUG_KMS("modes are different, full mode set\n");
658 		drm_mode_debug_printmodeline(&set->crtc->mode);
659 		drm_mode_debug_printmodeline(set->mode);
663 	/* take a reference on all unbound connectors in set, reuse the
666 	for (ro = 0; ro < set->num_connectors; ro++) {
667 		if (set->connectors[ro]->encoder)
669 		drm_connector_get(set->connectors[ro]);
679 		for (ro = 0; ro < set->num_connectors; ro++) {
680 			if (set->connectors[ro] == connector) {
705 			 * the appropriate crtc will be set later.
725 		if (connector->encoder->crtc == set->crtc)
730 		for (ro = 0; ro < set->num_connectors; ro++) {
731 			if (set->connectors[ro] == connector)
732 				new_crtc = set->crtc;
763 		if (drm_helper_crtc_in_use(set->crtc)) {
764 			DRM_DEBUG_KMS("attempting to set mode from"
766 			drm_mode_debug_printmodeline(set->mode);
767 			set->crtc->primary->fb = set->fb;
768 			if (!drm_crtc_helper_set_mode(set->crtc, set->mode,
769 						      set->x, set->y,
771 				DRM_ERROR("failed to set mode on [CRTC:%d:%s]\n",
772 					  set->crtc->base.id, set->crtc->name);
773 				set->crtc->primary->fb = save_set.fb;
778 			for (i = 0; i < set->num_connectors; i++) {
779 				DRM_DEBUG_KMS("\t[CONNECTOR:%d:%s] set DPMS on\n", set->connectors[i]->base.id,
780 					      set->connectors[i]->name);
781 				set->connectors[i]->funcs->dpms(set->connectors[i], DRM_MODE_DPMS_ON);
786 		set->crtc->x = set->x;
787 		set->crtc->y = set->y;
788 		set->crtc->primary->fb = set->fb;
789 		ret = crtc_funcs->mode_set_base(set->crtc,
790 						set->x, set->y, save_set.fb);
792 			set->crtc->x = save_set.x;
793 			set->crtc->y = save_set.y;
794 			set->crtc->primary->fb = save_set.fb;
816 	/* after fail drop reference on all unbound connectors in set, let
819 	for (ro = 0; ro < set->num_connectors; ro++) {
820 		if (set->connectors[ro]->encoder)
822 		drm_connector_put(set->connectors[ro]);
963  * has successfully set the restored configuration already. Hence this should
969  * configuration is restored in a different order than when userspace set it up)
999 			DRM_ERROR("failed to set mode on crtc %p\n", crtc);
1048 			struct drm_mode_set set = {
1052 			ret = drm_mode_set_config_internal(&set);