int axp_set_aldo4(unsigned int mvolt);
int axp_set_dldo(int dldo_num, unsigned int mvolt);
int axp_set_eldo(int eldo_num, unsigned int mvolt);
+int axp_set_fldo(int fldo_num, unsigned int mvolt);
int axp_init(void);
int axp_get_sid(unsigned int *sid);