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Permit detach of audio devices, such as uaudio. Selected code
from NetBSD/Lennart Augustsson. (niklas@ ok)

/*	$OpenBSD: midi_if.h,v 1.2 2000/05/24 13:44:18 ho Exp $	*/
/*	$NetBSD: midi_if.h,v 1.3 1998/11/25 22:17:07 augustss Exp $	*/

/*
 * Copyright (c) 1998 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Lennart Augustsson (augustss@netbsd.org).
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *        This product includes software developed by the NetBSD
 *        Foundation, Inc. and its contributors.
 * 4. Neither the name of The NetBSD Foundation nor the names of its
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef _SYS_DEV_MIDI_IF_H_
#define _SYS_DEV_MIDI_IF_H_

struct midi_info {
	char	*name;		/* Name of MIDI hardware */
	int	props;
};
#define MIDI_PROP_OUT_INTR  1
#define MIDI_PROP_CAN_INPUT 2

struct midi_softc;

struct midi_hw_if {
	int	(*open)__P((void *, int, 	/* open hardware */
			    void (*)__P((void *, int)), /* input callback */
			    void (*)__P((void *)), /* output callback */
			    void *));
	void	(*close)__P((void *));		/* close hardware */
	int	(*output)__P((void *, int));	/* output a byte */
	void	(*getinfo)__P((void *, struct midi_info *));
	int	(*ioctl)__P((void *, u_long, caddr_t, int, struct proc *));
};

void	       midi_attach __P((struct midi_softc *, struct device *));
struct device *midi_attach_mi __P((struct midi_hw_if *, void *, 
				   struct device *));

int	       midi_unit_count __P((void));
void	       midi_getinfo __P((dev_t, struct midi_info *));
int	       midi_writebytes __P((int, u_char *, int));

#endif /* _SYS_DEV_MIDI_IF_H_ */