If it appears to the satisfaction of the circuit court for the county in which an infirmary is located, upon petition for commitment, that a person meets the standards under sub. (1), it may, after affording the person an opportunity to be heard in person or by someone on his or her behalf, commit the person to a county infirmary. The power to commit includes persons who entered an infirmary voluntarily. The court may also, on petition and after a hearing, order the discharge of any patient, upon a showing that the patient is no longer in need of infirmary care, or that the patient can be adequately cared for elsewhere.