63 struct regnode;
65 typedef TAILQ_HEAD(regnode_list, regnode) regnode_list_t;
69 static int regnode_method_init(struct regnode *regnode);
70 static int regnode_method_enable(struct regnode *regnode, bool enable,
72 static int regnode_method_status(struct regnode *regnode, int *status);
73 static int regnode_method_set_voltage(struct regnode *regnode, int min_uvolt,
75 static int regnode_method_get_voltage(struct regnode *regnode, int *uvolt);
92 DEFINE_CLASS_0(regnode, regnode_class, regnode_methods, 0);
98 struct regnode {  struct
101 	TAILQ_ENTRY(regnode)	reglist_link;	/* Global list entry */
105 	struct regnode		*parent;	/* Resolved parent */  argument
134 	struct regnode		*regnode;  argument
168 	struct regnode *entry;  in regulator_constraint()
191 	struct regnode *entry;  in regulator_shutdown()
236 	struct regnode *regnode = arg1;  in regnode_uvolt_sysctl()  local
239 	if (regnode->std_param.min_uvolt == regnode->std_param.max_uvolt) {  in regnode_uvolt_sysctl()
240 		uvolt = regnode->std_param.min_uvolt;  in regnode_uvolt_sysctl()
243 		if ((rv = regnode_get_voltage(regnode, &uvolt)) != 0) {  in regnode_uvolt_sysctl()
259 regnode_method_init(struct regnode *regnode)  in regnode_method_init()  argument
266 regnode_method_enable(struct regnode *regnode, bool enable, int *udelay)  in regnode_method_enable()  argument
277 regnode_method_status(struct regnode *regnode, int *status)  in regnode_method_status()  argument
284 regnode_method_set_voltage(struct regnode *regnode, int min_uvolt, int max_uvolt,  in regnode_method_set_voltage()  argument
288 	if ((min_uvolt > regnode->std_param.max_uvolt) ||  in regnode_method_set_voltage()
289 	    (max_uvolt < regnode->std_param.min_uvolt))  in regnode_method_set_voltage()
296 regnode_method_get_voltage(struct regnode *regnode, int *uvolt)  in regnode_method_get_voltage()  argument
299 	*uvolt = regnode->std_param.min_uvolt +  in regnode_method_get_voltage()
300 	    (regnode->std_param.max_uvolt - regnode->std_param.min_uvolt) / 2;  in regnode_method_get_voltage()
305 regnode_method_check_voltage(struct regnode *regnode, int uvolt)  in regnode_method_check_voltage()  argument
308 	if ((uvolt > regnode->std_param.max_uvolt) ||  in regnode_method_check_voltage()
309 	    (uvolt < regnode->std_param.min_uvolt))  in regnode_method_check_voltage()
320 static struct regnode *
323 	struct regnode *entry;  in regnode_find_by_name()
334 static struct regnode *
337 	struct regnode *entry;  in regnode_find_by_id()
352 struct regnode *
356 	struct regnode *regnode;  in regnode_create()  local
368 	regnode = malloc(sizeof(struct regnode), M_REGULATOR,  in regnode_create()
370 	kobj_init((kobj_t)regnode, (kobj_class_t)regnode_class);  in regnode_create()
371 	sx_init(&regnode->lock, "Regulator node lock");  in regnode_create()
375 		regnode->softc = malloc(regnode_class->size, M_REGULATOR,  in regnode_create()
382 		regnode->name = def->name;  in regnode_create()
383 		regnode->parent_name = def->parent_name;  in regnode_create()
385 		regnode->name = strdup(def->name, M_REGULATOR);  in regnode_create()
387 			regnode->parent_name = strdup(def->parent_name,  in regnode_create()
392 	TAILQ_INIT(&regnode->consumers_list);  in regnode_create()
393 	regnode->id = def->id;  in regnode_create()
394 	regnode->pdev = pdev;  in regnode_create()
395 	regnode->flags = def->flags;  in regnode_create()
396 	regnode->parent = NULL;  in regnode_create()
397 	regnode->std_param = def->std_param;  in regnode_create()
399 	regnode->ofw_node = def->ofw_node;  in regnode_create()
402 	sysctl_ctx_init(&regnode->sysctl_ctx);  in regnode_create()
403 	regnode_oid = SYSCTL_ADD_NODE(&regnode->sysctl_ctx,  in regnode_create()
405 	    OID_AUTO, regnode->name,  in regnode_create()
408 	SYSCTL_ADD_INT(&regnode->sysctl_ctx,  in regnode_create()
411 	    CTLFLAG_RD, &regnode->std_param.min_uvolt, 0,  in regnode_create()
413 	SYSCTL_ADD_INT(&regnode->sysctl_ctx,  in regnode_create()
416 	    CTLFLAG_RD, &regnode->std_param.max_uvolt, 0,  in regnode_create()
418 	SYSCTL_ADD_INT(&regnode->sysctl_ctx,  in regnode_create()
421 	    CTLFLAG_RD, &regnode->std_param.min_uamp, 0,  in regnode_create()
423 	SYSCTL_ADD_INT(&regnode->sysctl_ctx,  in regnode_create()
426 	    CTLFLAG_RD, &regnode->std_param.max_uamp, 0,  in regnode_create()
428 	SYSCTL_ADD_INT(&regnode->sysctl_ctx,  in regnode_create()
431 	    CTLFLAG_RD, &regnode->std_param.ramp_delay, 0,  in regnode_create()
433 	SYSCTL_ADD_INT(&regnode->sysctl_ctx,  in regnode_create()
436 	    CTLFLAG_RD, &regnode->std_param.enable_delay, 0,  in regnode_create()
438 	SYSCTL_ADD_INT(&regnode->sysctl_ctx,  in regnode_create()
441 	    CTLFLAG_RD, &regnode->enable_cnt, 0,  in regnode_create()
443 	SYSCTL_ADD_U8(&regnode->sysctl_ctx,  in regnode_create()
446 	    CTLFLAG_RD, (uint8_t *) &regnode->std_param.boot_on, 0,  in regnode_create()
448 	SYSCTL_ADD_U8(&regnode->sysctl_ctx,  in regnode_create()
451 	    CTLFLAG_RD, (uint8_t *)&regnode->std_param.always_on, 0,  in regnode_create()
454 	SYSCTL_ADD_PROC(&regnode->sysctl_ctx,  in regnode_create()
458 	    regnode, 0, regnode_uvolt_sysctl,  in regnode_create()
462 	return (regnode);  in regnode_create()
466 struct regnode *
467 regnode_register(struct regnode *regnode)  in regnode_register()  argument
472 	if (regnode->ofw_node <= 0)  in regnode_register()
473 		regnode->ofw_node = ofw_bus_get_node(regnode->pdev);  in regnode_register()
474 	if (regnode->ofw_node <= 0)  in regnode_register()
478 	rv = REGNODE_INIT(regnode);  in regnode_register()
485 	TAILQ_INSERT_TAIL(&regnode_list, regnode, reglist_link);  in regnode_register()
488 	OF_device_register_xref(OF_xref_from_node(regnode->ofw_node),  in regnode_register()
489 	    regnode->pdev);  in regnode_register()
491 	return (regnode);  in regnode_register()
495 regnode_resolve_parent(struct regnode *regnode)  in regnode_resolve_parent()  argument
499 	if ((regnode->parent != NULL) ||  in regnode_resolve_parent()
500 	    (regnode->parent_name == NULL))  in regnode_resolve_parent()
503 	regnode->parent = regnode_find_by_name(regnode->parent_name);  in regnode_resolve_parent()
504 	if (regnode->parent == NULL)  in regnode_resolve_parent()
531 regnode_get_name(struct regnode *regnode)  in regnode_get_name()  argument
534 	return (regnode->name);  in regnode_get_name()
538 regnode_get_parent_name(struct regnode *regnode)  in regnode_get_parent_name()  argument
541 	return (regnode->parent_name);  in regnode_get_parent_name()
545 regnode_get_flags(struct regnode *regnode)  in regnode_get_flags()  argument
548 	return (regnode->flags);  in regnode_get_flags()
552 regnode_get_softc(struct regnode *regnode)  in regnode_get_softc()  argument
555 	return (regnode->softc);  in regnode_get_softc()
559 regnode_get_device(struct regnode *regnode)  in regnode_get_device()  argument
562 	return (regnode->pdev);  in regnode_get_device()
565 struct regnode_std_param *regnode_get_stdparam(struct regnode *regnode)  in regnode_get_stdparam()  argument
568 	return (&regnode->std_param);  in regnode_get_stdparam()
595 struct regnode *
596 regnode_get_parent(struct regnode *regnode)  in regnode_get_parent()  argument
602 	rv = regnode_resolve_parent(regnode);  in regnode_get_parent()
606 	return (regnode->parent);  in regnode_get_parent()
613 regnode_enable(struct regnode *regnode)  in regnode_enable()  argument
621 	rv = regnode_resolve_parent(regnode);  in regnode_enable()
624 	if (regnode->parent != NULL) {  in regnode_enable()
625 		rv = regnode_enable(regnode->parent);  in regnode_enable()
631 	REGNODE_XLOCK(regnode);  in regnode_enable()
632 	if (regnode->enable_cnt == 0) {  in regnode_enable()
633 		rv = REGNODE_ENABLE(regnode, true, &udelay);  in regnode_enable()
635 			REGNODE_UNLOCK(regnode);  in regnode_enable()
640 	regnode->enable_cnt++;  in regnode_enable()
641 	REGNODE_UNLOCK(regnode);  in regnode_enable()
649 regnode_disable(struct regnode *regnode)  in regnode_disable()  argument
657 	REGNODE_XLOCK(regnode);  in regnode_disable()
659 	if (regnode->enable_cnt == 1 &&  in regnode_disable()
660 	    (regnode->flags & REGULATOR_FLAGS_NOT_DISABLE) == 0 &&  in regnode_disable()
661 	    !regnode->std_param.always_on) {  in regnode_disable()
662 		rv = REGNODE_ENABLE(regnode, false, &udelay);  in regnode_disable()
664 			REGNODE_UNLOCK(regnode);  in regnode_disable()
669 	regnode->enable_cnt--;  in regnode_disable()
670 	REGNODE_UNLOCK(regnode);  in regnode_disable()
672 	rv = regnode_resolve_parent(regnode);  in regnode_disable()
675 	if (regnode->parent != NULL)  in regnode_disable()
676 		rv = regnode_disable(regnode->parent);  in regnode_disable()
684 regnode_stop(struct regnode *regnode, int depth)  in regnode_stop()  argument
692 	REGNODE_XLOCK(regnode);  in regnode_stop()
694 	if ((regnode->enable_cnt != 0) && (depth == 0)) {  in regnode_stop()
695 		REGNODE_UNLOCK(regnode);  in regnode_stop()
699 	if ((regnode->enable_cnt == 0) &&  in regnode_stop()
700 	    ((regnode->flags & REGULATOR_FLAGS_NOT_DISABLE) == 0)) {  in regnode_stop()
701 		rv = REGNODE_STOP(regnode, &udelay);  in regnode_stop()
703 			REGNODE_UNLOCK(regnode);  in regnode_stop()
708 	REGNODE_UNLOCK(regnode);  in regnode_stop()
710 	rv = regnode_resolve_parent(regnode);  in regnode_stop()
713 	if (regnode->parent != NULL && regnode->parent->enable_cnt == 0)  in regnode_stop()
714 		rv = regnode_stop(regnode->parent, depth + 1);  in regnode_stop()
722 regnode_status(struct regnode *regnode, int *status)  in regnode_status()  argument
728 	REGNODE_XLOCK(regnode);  in regnode_status()
729 	rv = REGNODE_STATUS(regnode, status);  in regnode_status()
730 	REGNODE_UNLOCK(regnode);  in regnode_status()
738 regnode_get_voltage(struct regnode *regnode, int *uvolt)  in regnode_get_voltage()  argument
744 	REGNODE_XLOCK(regnode);  in regnode_get_voltage()
745 	rv = REGNODE_GET_VOLTAGE(regnode, uvolt);  in regnode_get_voltage()
746 	REGNODE_UNLOCK(regnode);  in regnode_get_voltage()
750 		rv = regnode_resolve_parent(regnode);  in regnode_get_voltage()
753 		if (regnode->parent != NULL)  in regnode_get_voltage()
754 			rv = regnode_get_voltage(regnode->parent, uvolt);  in regnode_get_voltage()
764 regnode_set_voltage(struct regnode *regnode, int min_uvolt, int max_uvolt)  in regnode_set_voltage()  argument
771 	REGNODE_XLOCK(regnode);  in regnode_set_voltage()
773 	rv = REGNODE_SET_VOLTAGE(regnode, min_uvolt, max_uvolt, &udelay);  in regnode_set_voltage()
776 	REGNODE_UNLOCK(regnode);  in regnode_set_voltage()
784 regnode_set_voltage_checked(struct regnode *regnode, struct regulator *reg,  in regnode_set_voltage_checked()  argument
795 	REGNODE_XLOCK(regnode);  in regnode_set_voltage_checked()
797 	if ((min_uvolt > regnode->std_param.max_uvolt) ||  in regnode_set_voltage_checked()
798 	    (max_uvolt < regnode->std_param.min_uvolt)) {  in regnode_set_voltage_checked()
799 		REGNODE_UNLOCK(regnode);  in regnode_set_voltage_checked()
804 	all_min_uvolt = regnode->std_param.min_uvolt;  in regnode_set_voltage_checked()
805 	all_max_uvolt = regnode->std_param.max_uvolt;  in regnode_set_voltage_checked()
806 	TAILQ_FOREACH(tmp, &regnode->consumers_list, link) {  in regnode_set_voltage_checked()
819 		REGNODE_UNLOCK(regnode);  in regnode_set_voltage_checked()
829 	rv = REGNODE_SET_VOLTAGE(regnode, min_uvolt, max_uvolt, &udelay);  in regnode_set_voltage_checked()
831 	REGNODE_UNLOCK(regnode);  in regnode_set_voltage_checked()
836 regnode_set_constraint(struct regnode *regnode)  in regnode_set_constraint()  argument
840 	if (regnode->std_param.boot_on != true &&  in regnode_set_constraint()
841 	    regnode->std_param.always_on != true)  in regnode_set_constraint()
844 	rv = regnode_status(regnode, &status);  in regnode_set_constraint()
848 			    regnode_get_name(regnode));  in regnode_set_constraint()
855 	rv = regnode_get_voltage(regnode, &uvolt);  in regnode_set_constraint()
859 			    regnode_get_name(regnode));  in regnode_set_constraint()
863 	if (uvolt < regnode->std_param.min_uvolt ||  in regnode_set_constraint()
864 	  uvolt > regnode->std_param.max_uvolt) {  in regnode_set_constraint()
868 			    regnode_get_name(regnode),  in regnode_set_constraint()
869 			    uvolt, regnode->std_param.min_uvolt,  in regnode_set_constraint()
870 			    regnode->std_param.max_uvolt);  in regnode_set_constraint()
874 	rv = regnode_enable(regnode);  in regnode_set_constraint()
878 			    regnode_get_name(regnode));  in regnode_set_constraint()
887 regnode_get_ofw_node(struct regnode *regnode)  in regnode_get_ofw_node()  argument
890 	return (regnode->ofw_node);  in regnode_get_ofw_node()
901 regulator_create(struct regnode *regnode, device_t cdev)  in regulator_create()  argument
910 	reg->regnode = regnode;  in regulator_create()
913 	REGNODE_XLOCK(regnode);  in regulator_create()
914 	regnode->ref_cnt++;  in regulator_create()
915 	TAILQ_INSERT_TAIL(&regnode->consumers_list, reg, link);  in regulator_create()
916 	reg ->min_uvolt = regnode->std_param.min_uvolt;  in regulator_create()
917 	reg ->max_uvolt = regnode->std_param.max_uvolt;  in regulator_create()
918 	REGNODE_UNLOCK(regnode);  in regulator_create()
927 	struct regnode *regnode;  in regulator_enable()  local
929 	regnode = reg->regnode;  in regulator_enable()
930 	KASSERT(regnode->ref_cnt > 0,  in regulator_enable()
931 	   ("Attempt to access unreferenced regulator: %s\n", regnode->name));  in regulator_enable()
933 	rv = regnode_enable(regnode);  in regulator_enable()
944 	struct regnode *regnode;  in regulator_disable()  local
946 	regnode = reg->regnode;  in regulator_disable()
947 	KASSERT(regnode->ref_cnt > 0,  in regulator_disable()
948 	   ("Attempt to access unreferenced regulator: %s\n", regnode->name));  in regulator_disable()
951 	   regnode->name));  in regulator_disable()
953 	rv = regnode_disable(regnode);  in regulator_disable()
964 	struct regnode *regnode;  in regulator_stop()  local
966 	regnode = reg->regnode;  in regulator_stop()
967 	KASSERT(regnode->ref_cnt > 0,  in regulator_stop()
968 	   ("Attempt to access unreferenced regulator: %s\n", regnode->name));  in regulator_stop()
970 	   ("Attempt to stop already enabled regulator: %s\n", regnode->name));  in regulator_stop()
973 	rv = regnode_stop(regnode, 0);  in regulator_stop()
982 	struct regnode *regnode;  in regulator_status()  local
984 	regnode = reg->regnode;  in regulator_status()
985 	KASSERT(regnode->ref_cnt > 0,  in regulator_status()
986 	   ("Attempt to access unreferenced regulator: %s\n", regnode->name));  in regulator_status()
993 	rv = regnode_status(regnode, status);  in regulator_status()
1002 	struct regnode *regnode;  in regulator_get_voltage()  local
1004 	regnode = reg->regnode;  in regulator_get_voltage()
1005 	KASSERT(regnode->ref_cnt > 0,  in regulator_get_voltage()
1006 	   ("Attempt to access unreferenced regulator: %s\n", regnode->name));  in regulator_get_voltage()
1009 	rv = regnode_get_voltage(regnode, uvolt);  in regulator_get_voltage()
1017 	struct regnode *regnode;  in regulator_set_voltage()  local
1020 	regnode = reg->regnode;  in regulator_set_voltage()
1021 	KASSERT(regnode->ref_cnt > 0,  in regulator_set_voltage()
1022 	   ("Attempt to access unreferenced regulator: %s\n", regnode->name));  in regulator_set_voltage()
1026 	rv = regnode_set_voltage_checked(regnode, reg, min_uvolt, max_uvolt);  in regulator_set_voltage()
1039 	struct regnode *regnode;  in regulator_check_voltage()  local
1041 	regnode = reg->regnode;  in regulator_check_voltage()
1042 	KASSERT(regnode->ref_cnt > 0,  in regulator_check_voltage()
1043 	   ("Attempt to access unreferenced regulator: %s\n", regnode->name));  in regulator_check_voltage()
1046 	rv = REGNODE_CHECK_VOLTAGE(regnode, uvolt);  in regulator_check_voltage()
1054 	struct regnode *regnode;  in regulator_get_name()  local
1056 	regnode = reg->regnode;  in regulator_get_name()
1057 	KASSERT(regnode->ref_cnt > 0,  in regulator_get_name()
1058 	   ("Attempt to access unreferenced regulator: %s\n", regnode->name));  in regulator_get_name()
1059 	return (regnode->name);  in regulator_get_name()
1065 	struct regnode *regnode;  in regulator_get_by_name()  local
1068 	regnode = regnode_find_by_name(name);  in regulator_get_by_name()
1069 	if (regnode == NULL) {  in regulator_get_by_name()
1073 	*reg = regulator_create(regnode, cdev);  in regulator_get_by_name()
1081 	struct regnode *regnode;  in regulator_get_by_id()  local
1085 	regnode = regnode_find_by_id(pdev, id);  in regulator_get_by_id()
1086 	if (regnode == NULL) {  in regulator_get_by_id()
1090 	*reg = regulator_create(regnode, cdev);  in regulator_get_by_id()
1099 	struct regnode *regnode;  in regulator_release()  local
1101 	regnode = reg->regnode;  in regulator_release()
1102 	KASSERT(regnode->ref_cnt > 0,  in regulator_release()
1103 	   ("Attempt to access unreferenced regulator: %s\n", regnode->name));  in regulator_release()
1106 		regnode_disable(regnode);  in regulator_release()
1109 	REGNODE_XLOCK(regnode);  in regulator_release()
1110 	TAILQ_REMOVE(&regnode->consumers_list, reg, link);  in regulator_release()
1111 	regnode->ref_cnt--;  in regulator_release()
1112 	REGNODE_UNLOCK(regnode);  in regulator_release()