62 struct regnode;
64 typedef TAILQ_HEAD(regnode_list, regnode) regnode_list_t;
68 static int regnode_method_enable(struct regnode *regnode, bool enable,
70 static int regnode_method_status(struct regnode *regnode, int *status);
71 static int regnode_method_set_voltage(struct regnode *regnode, int min_uvolt,
73 static int regnode_method_get_voltage(struct regnode *regnode, int *uvolt);
87 DEFINE_CLASS_0(regnode, regnode_class, regnode_methods, 0);
93 struct regnode {  struct
96 	TAILQ_ENTRY(regnode)	reglist_link;	/* Global list entry */
100 	struct regnode		*parent;	/* Resolved parent */  argument
129 	struct regnode		*regnode;  argument
168 	struct regnode *entry;  in regulator_shutdown()
193 	struct regnode *regnode = arg1;  in regnode_uvolt_sysctl()  local
196 	if (regnode->std_param.min_uvolt == regnode->std_param.max_uvolt) {  in regnode_uvolt_sysctl()
197 		uvolt = regnode->std_param.min_uvolt;  in regnode_uvolt_sysctl()
200 		if ((rv = regnode_get_voltage(regnode, &uvolt)) != 0) {  in regnode_uvolt_sysctl()
216 regnode_method_enable(struct regnode *regnode, bool enable, int *udelay)  in regnode_method_enable()  argument
227 regnode_method_status(struct regnode *regnode, int *status)  in regnode_method_status()  argument
234 regnode_method_set_voltage(struct regnode *regnode, int min_uvolt, int max_uvolt,  in regnode_method_set_voltage()  argument
238 	if ((min_uvolt > regnode->std_param.max_uvolt) ||  in regnode_method_set_voltage()
239 	    (max_uvolt < regnode->std_param.min_uvolt))  in regnode_method_set_voltage()
246 regnode_method_get_voltage(struct regnode *regnode, int *uvolt)  in regnode_method_get_voltage()  argument
249 	return (regnode->std_param.min_uvolt +  in regnode_method_get_voltage()
250 	    (regnode->std_param.max_uvolt - regnode->std_param.min_uvolt) / 2);  in regnode_method_get_voltage()
259 static struct regnode *
262 	struct regnode *entry;  in regnode_find_by_name()
273 static struct regnode *
276 	struct regnode *entry;  in regnode_find_by_id()
291 struct regnode *
295 	struct regnode *regnode;  in regnode_create()  local
307 	regnode = malloc(sizeof(struct regnode), M_REGULATOR,  in regnode_create()
309 	kobj_init((kobj_t)regnode, (kobj_class_t)regnode_class);  in regnode_create()
310 	sx_init(&regnode->lock, "Regulator node lock");  in regnode_create()
314 		regnode->softc = malloc(regnode_class->size, M_REGULATOR,  in regnode_create()
321 		regnode->name = def->name;  in regnode_create()
322 		regnode->parent_name = def->parent_name;  in regnode_create()
324 		regnode->name = strdup(def->name, M_REGULATOR);  in regnode_create()
326 			regnode->parent_name = strdup(def->parent_name,  in regnode_create()
331 	TAILQ_INIT(&regnode->consumers_list);  in regnode_create()
332 	regnode->id = def->id;  in regnode_create()
333 	regnode->pdev = pdev;  in regnode_create()
334 	regnode->flags = def->flags;  in regnode_create()
335 	regnode->parent = NULL;  in regnode_create()
336 	regnode->std_param = def->std_param;  in regnode_create()
338 	regnode->ofw_node = def->ofw_node;  in regnode_create()
341 	sysctl_ctx_init(&regnode->sysctl_ctx);  in regnode_create()
342 	regnode_oid = SYSCTL_ADD_NODE(&regnode->sysctl_ctx,  in regnode_create()
344 	    OID_AUTO, regnode->name,  in regnode_create()
347 	SYSCTL_ADD_INT(&regnode->sysctl_ctx,  in regnode_create()
350 	    CTLFLAG_RD, &regnode->std_param.min_uvolt, 0,  in regnode_create()
352 	SYSCTL_ADD_INT(&regnode->sysctl_ctx,  in regnode_create()
355 	    CTLFLAG_RD, &regnode->std_param.max_uvolt, 0,  in regnode_create()
357 	SYSCTL_ADD_INT(&regnode->sysctl_ctx,  in regnode_create()
360 	    CTLFLAG_RD, &regnode->std_param.min_uamp, 0,  in regnode_create()
362 	SYSCTL_ADD_INT(&regnode->sysctl_ctx,  in regnode_create()
365 	    CTLFLAG_RD, &regnode->std_param.max_uamp, 0,  in regnode_create()
367 	SYSCTL_ADD_INT(&regnode->sysctl_ctx,  in regnode_create()
370 	    CTLFLAG_RD, &regnode->std_param.ramp_delay, 0,  in regnode_create()
372 	SYSCTL_ADD_INT(&regnode->sysctl_ctx,  in regnode_create()
375 	    CTLFLAG_RD, &regnode->std_param.enable_delay, 0,  in regnode_create()
377 	SYSCTL_ADD_INT(&regnode->sysctl_ctx,  in regnode_create()
380 	    CTLFLAG_RD, &regnode->enable_cnt, 0,  in regnode_create()
382 	SYSCTL_ADD_U8(&regnode->sysctl_ctx,  in regnode_create()
385 	    CTLFLAG_RD, (uint8_t *) &regnode->std_param.boot_on, 0,  in regnode_create()
387 	SYSCTL_ADD_U8(&regnode->sysctl_ctx,  in regnode_create()
390 	    CTLFLAG_RD, (uint8_t *)&regnode->std_param.always_on, 0,  in regnode_create()
393 	SYSCTL_ADD_PROC(&regnode->sysctl_ctx,  in regnode_create()
397 	    regnode, 0, regnode_uvolt_sysctl,  in regnode_create()
401 	return (regnode);  in regnode_create()
405 struct regnode *
406 regnode_register(struct regnode *regnode)  in regnode_register()  argument
411 	if (regnode->ofw_node <= 0)  in regnode_register()
412 		regnode->ofw_node = ofw_bus_get_node(regnode->pdev);  in regnode_register()
413 	if (regnode->ofw_node <= 0)  in regnode_register()
417 	rv = REGNODE_INIT(regnode);  in regnode_register()
424 	TAILQ_INSERT_TAIL(&regnode_list, regnode, reglist_link);  in regnode_register()
427 	OF_device_register_xref(OF_xref_from_node(regnode->ofw_node),  in regnode_register()
428 	    regnode->pdev);  in regnode_register()
430 	return (regnode);  in regnode_register()
434 regnode_resolve_parent(struct regnode *regnode)  in regnode_resolve_parent()  argument
438 	if ((regnode->parent != NULL) ||  in regnode_resolve_parent()
439 	    (regnode->parent_name == NULL))  in regnode_resolve_parent()
442 	regnode->parent = regnode_find_by_name(regnode->parent_name);  in regnode_resolve_parent()
443 	if (regnode->parent == NULL)  in regnode_resolve_parent()
470 regnode_get_name(struct regnode *regnode)  in regnode_get_name()  argument
473 	return (regnode->name);  in regnode_get_name()
477 regnode_get_parent_name(struct regnode *regnode)  in regnode_get_parent_name()  argument
480 	return (regnode->parent_name);  in regnode_get_parent_name()
484 regnode_get_flags(struct regnode *regnode)  in regnode_get_flags()  argument
487 	return (regnode->flags);  in regnode_get_flags()
491 regnode_get_softc(struct regnode *regnode)  in regnode_get_softc()  argument
494 	return (regnode->softc);  in regnode_get_softc()
498 regnode_get_device(struct regnode *regnode)  in regnode_get_device()  argument
501 	return (regnode->pdev);  in regnode_get_device()
504 struct regnode_std_param *regnode_get_stdparam(struct regnode *regnode)  in regnode_get_stdparam()  argument
507 	return (&regnode->std_param);  in regnode_get_stdparam()
534 struct regnode *
535 regnode_get_parent(struct regnode *regnode)  in regnode_get_parent()  argument
541 	rv = regnode_resolve_parent(regnode);  in regnode_get_parent()
545 	return (regnode->parent);  in regnode_get_parent()
552 regnode_enable(struct regnode *regnode)  in regnode_enable()  argument
560 	rv = regnode_resolve_parent(regnode);  in regnode_enable()
563 	if (regnode->parent != NULL) {  in regnode_enable()
564 		rv = regnode_enable(regnode->parent);  in regnode_enable()
570 	REGNODE_XLOCK(regnode);  in regnode_enable()
571 	if (regnode->enable_cnt == 0) {  in regnode_enable()
572 		rv = REGNODE_ENABLE(regnode, true, &udelay);  in regnode_enable()
574 			REGNODE_UNLOCK(regnode);  in regnode_enable()
579 	regnode->enable_cnt++;  in regnode_enable()
580 	REGNODE_UNLOCK(regnode);  in regnode_enable()
588 regnode_disable(struct regnode *regnode)  in regnode_disable()  argument
596 	REGNODE_XLOCK(regnode);  in regnode_disable()
598 	if (regnode->enable_cnt == 1 &&  in regnode_disable()
599 	    (regnode->flags & REGULATOR_FLAGS_NOT_DISABLE) == 0 &&  in regnode_disable()
600 	    !regnode->std_param.always_on) {  in regnode_disable()
601 		rv = REGNODE_ENABLE(regnode, false, &udelay);  in regnode_disable()
603 			REGNODE_UNLOCK(regnode);  in regnode_disable()
608 	regnode->enable_cnt--;  in regnode_disable()
609 	REGNODE_UNLOCK(regnode);  in regnode_disable()
611 	rv = regnode_resolve_parent(regnode);  in regnode_disable()
614 	if (regnode->parent != NULL)  in regnode_disable()
615 		rv = regnode_disable(regnode->parent);  in regnode_disable()
623 regnode_stop(struct regnode *regnode, int depth)  in regnode_stop()  argument
631 	REGNODE_XLOCK(regnode);  in regnode_stop()
633 	if ((regnode->enable_cnt != 0) && (depth == 0)) {  in regnode_stop()
634 		REGNODE_UNLOCK(regnode);  in regnode_stop()
638 	if ((regnode->enable_cnt == 0) &&  in regnode_stop()
639 	    ((regnode->flags & REGULATOR_FLAGS_NOT_DISABLE) == 0)) {  in regnode_stop()
640 		rv = REGNODE_STOP(regnode, &udelay);  in regnode_stop()
642 			REGNODE_UNLOCK(regnode);  in regnode_stop()
647 	REGNODE_UNLOCK(regnode);  in regnode_stop()
649 	rv = regnode_resolve_parent(regnode);  in regnode_stop()
652 	if (regnode->parent != NULL && regnode->parent->enable_cnt == 0)  in regnode_stop()
653 		rv = regnode_stop(regnode->parent, depth + 1);  in regnode_stop()
661 regnode_status(struct regnode *regnode, int *status)  in regnode_status()  argument
667 	REGNODE_XLOCK(regnode);  in regnode_status()
668 	rv = REGNODE_STATUS(regnode, status);  in regnode_status()
669 	REGNODE_UNLOCK(regnode);  in regnode_status()
677 regnode_get_voltage(struct regnode *regnode, int *uvolt)  in regnode_get_voltage()  argument
683 	REGNODE_XLOCK(regnode);  in regnode_get_voltage()
684 	rv = REGNODE_GET_VOLTAGE(regnode, uvolt);  in regnode_get_voltage()
685 	REGNODE_UNLOCK(regnode);  in regnode_get_voltage()
689 		rv = regnode_resolve_parent(regnode);  in regnode_get_voltage()
692 		if (regnode->parent != NULL)  in regnode_get_voltage()
693 			rv = regnode_get_voltage(regnode->parent, uvolt);  in regnode_get_voltage()
703 regnode_set_voltage(struct regnode *regnode, int min_uvolt, int max_uvolt)  in regnode_set_voltage()  argument
710 	REGNODE_XLOCK(regnode);  in regnode_set_voltage()
712 	rv = REGNODE_SET_VOLTAGE(regnode, min_uvolt, max_uvolt, &udelay);  in regnode_set_voltage()
715 	REGNODE_UNLOCK(regnode);  in regnode_set_voltage()
723 regnode_set_voltage_checked(struct regnode *regnode, struct regulator *reg,  in regnode_set_voltage_checked()  argument
734 	REGNODE_XLOCK(regnode);  in regnode_set_voltage_checked()
736 	if ((min_uvolt > regnode->std_param.max_uvolt) ||  in regnode_set_voltage_checked()
737 	    (max_uvolt < regnode->std_param.min_uvolt)) {  in regnode_set_voltage_checked()
738 		REGNODE_UNLOCK(regnode);  in regnode_set_voltage_checked()
743 	all_min_uvolt = regnode->std_param.min_uvolt;  in regnode_set_voltage_checked()
744 	all_max_uvolt = regnode->std_param.max_uvolt;  in regnode_set_voltage_checked()
745 	TAILQ_FOREACH(tmp, &regnode->consumers_list, link) {  in regnode_set_voltage_checked()
758 		REGNODE_UNLOCK(regnode);  in regnode_set_voltage_checked()
768 	rv = REGNODE_SET_VOLTAGE(regnode, min_uvolt, max_uvolt, &udelay);  in regnode_set_voltage_checked()
770 	REGNODE_UNLOCK(regnode);  in regnode_set_voltage_checked()
776 regnode_get_ofw_node(struct regnode *regnode)  in regnode_get_ofw_node()  argument
779 	return (regnode->ofw_node);  in regnode_get_ofw_node()
790 regulator_create(struct regnode *regnode, device_t cdev)  in regulator_create()  argument
799 	reg->regnode = regnode;  in regulator_create()
802 	REGNODE_XLOCK(regnode);  in regulator_create()
803 	regnode->ref_cnt++;  in regulator_create()
804 	TAILQ_INSERT_TAIL(&regnode->consumers_list, reg, link);  in regulator_create()
805 	reg ->min_uvolt = regnode->std_param.min_uvolt;  in regulator_create()
806 	reg ->max_uvolt = regnode->std_param.max_uvolt;  in regulator_create()
807 	REGNODE_UNLOCK(regnode);  in regulator_create()
816 	struct regnode *regnode;  in regulator_enable()  local
818 	regnode = reg->regnode;  in regulator_enable()
819 	KASSERT(regnode->ref_cnt > 0,  in regulator_enable()
820 	   ("Attempt to access unreferenced regulator: %s\n", regnode->name));  in regulator_enable()
822 	rv = regnode_enable(regnode);  in regulator_enable()
833 	struct regnode *regnode;  in regulator_disable()  local
835 	regnode = reg->regnode;  in regulator_disable()
836 	KASSERT(regnode->ref_cnt > 0,  in regulator_disable()
837 	   ("Attempt to access unreferenced regulator: %s\n", regnode->name));  in regulator_disable()
840 	   regnode->name));  in regulator_disable()
842 	rv = regnode_disable(regnode);  in regulator_disable()
853 	struct regnode *regnode;  in regulator_stop()  local
855 	regnode = reg->regnode;  in regulator_stop()
856 	KASSERT(regnode->ref_cnt > 0,  in regulator_stop()
857 	   ("Attempt to access unreferenced regulator: %s\n", regnode->name));  in regulator_stop()
859 	   ("Attempt to stop already enabled regulator: %s\n", regnode->name));  in regulator_stop()
862 	rv = regnode_stop(regnode, 0);  in regulator_stop()
871 	struct regnode *regnode;  in regulator_status()  local
873 	regnode = reg->regnode;  in regulator_status()
874 	KASSERT(regnode->ref_cnt > 0,  in regulator_status()
875 	   ("Attempt to access unreferenced regulator: %s\n", regnode->name));  in regulator_status()
878 	rv = regnode_status(regnode, status);  in regulator_status()
887 	struct regnode *regnode;  in regulator_get_voltage()  local
889 	regnode = reg->regnode;  in regulator_get_voltage()
890 	KASSERT(regnode->ref_cnt > 0,  in regulator_get_voltage()
891 	   ("Attempt to access unreferenced regulator: %s\n", regnode->name));  in regulator_get_voltage()
894 	rv = regnode_get_voltage(regnode, uvolt);  in regulator_get_voltage()
902 	struct regnode *regnode;  in regulator_set_voltage()  local
905 	regnode = reg->regnode;  in regulator_set_voltage()
906 	KASSERT(regnode->ref_cnt > 0,  in regulator_set_voltage()
907 	   ("Attempt to access unreferenced regulator: %s\n", regnode->name));  in regulator_set_voltage()
911 	rv = regnode_set_voltage_checked(regnode, reg, min_uvolt, max_uvolt);  in regulator_set_voltage()
923 	struct regnode *regnode;  in regulator_get_name()  local
925 	regnode = reg->regnode;  in regulator_get_name()
926 	KASSERT(regnode->ref_cnt > 0,  in regulator_get_name()
927 	   ("Attempt to access unreferenced regulator: %s\n", regnode->name));  in regulator_get_name()
928 	return (regnode->name);  in regulator_get_name()
934 	struct regnode *regnode;  in regulator_get_by_name()  local
937 	regnode = regnode_find_by_name(name);  in regulator_get_by_name()
938 	if (regnode == NULL) {  in regulator_get_by_name()
942 	*reg = regulator_create(regnode, cdev);  in regulator_get_by_name()
950 	struct regnode *regnode;  in regulator_get_by_id()  local
954 	regnode = regnode_find_by_id(pdev, id);  in regulator_get_by_id()
955 	if (regnode == NULL) {  in regulator_get_by_id()
959 	*reg = regulator_create(regnode, cdev);  in regulator_get_by_id()
968 	struct regnode *regnode;  in regulator_release()  local
970 	regnode = reg->regnode;  in regulator_release()
971 	KASSERT(regnode->ref_cnt > 0,  in regulator_release()
972 	   ("Attempt to access unreferenced regulator: %s\n", regnode->name));  in regulator_release()
975 		regnode_disable(regnode);  in regulator_release()
978 	REGNODE_XLOCK(regnode);  in regulator_release()
979 	TAILQ_REMOVE(&regnode->consumers_list, reg, link);  in regulator_release()
980 	regnode->ref_cnt--;  in regulator_release()
981 	REGNODE_UNLOCK(regnode);  in regulator_release()