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diff --git a/include/device/audio_status.h b/include/device/audio_status.h
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+/* 
+ * Mach Operating System
+ * Copyright (c) 1993 Carnegie Mellon University
+ * All Rights Reserved.
+ * 
+ * Permission to use, copy, modify and distribute this software and its
+ * documentation is hereby granted, provided that both the copyright
+ * notice and this permission notice appear in all copies of the
+ * software, derivative works or modified versions, and any portions
+ * thereof, and that both notices appear in supporting documentation.
+ * 
+ * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
+ * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
+ * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
+ * 
+ * Carnegie Mellon requests users of this software to return to
+ * 
+ *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
+ *  School of Computer Science
+ *  Carnegie Mellon University
+ *  Pittsburgh PA 15213-3890
+ * 
+ * any improvements or extensions that they make and grant Carnegie Mellon
+ * the rights to redistribute these changes.
+ */
+/*
+ * Copyright (c) 1991, 1992 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * 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 Computer Systems
+ * 	Engineering Group at Lawrence Berkeley Laboratory.
+ * 4. The name of the Laboratory may not be used to endorse or promote 
+ *    products derived from this software without specific prior written 
+ *    permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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 _DEVICE_AUDIO_STATUS_H_
+#define _DEVICE_AUDIO_STATUS_H_
+
+/*
+ * 	Access to ADC devices, such as the AMD 79C30A/32A.
+ */
+
+/*
+ * Programmable gains, see tables in device drivers
+ * for detailed mapping to device specifics.
+ */
+#define AUDIO_MIN_GAIN (0)
+#define AUDIO_MAX_GAIN (255)
+
+/*
+ * Encoding of audio samples
+ */
+#define AUDIO_ENCODING_ULAW (1)
+#define AUDIO_ENCODING_ALAW (2)
+
+/*
+ * Selection of input/output jack
+ */
+#define	AUDIO_MIKE		1
+
+#define AUDIO_SPEAKER   	1
+#define AUDIO_HEADPHONE		2
+
+/*
+ * Programming information from/to user application.
+ * Only portions of this might be available on any given chip.
+ */
+struct audio_prinfo {
+	unsigned int	sample_rate;
+	unsigned int	channels;
+	unsigned int	precision;
+	unsigned int	encoding;
+	unsigned int	gain;
+	unsigned int	port;		/* input/output jack */
+	unsigned int	seek;		/* BSD extension */
+	unsigned int	ispare[3];
+	unsigned int	samples;
+	unsigned int	eof;
+
+	unsigned char	pause;
+	unsigned char	error;
+	unsigned char	waiting;
+	unsigned char	cspare[3];
+	unsigned char	open;
+	unsigned char	active;
+
+};
+
+struct audio_info {
+	struct	audio_prinfo play;
+	struct	audio_prinfo record;
+	unsigned int	monitor_gain;
+	/* BSD extensions */
+	unsigned int	blocksize;	/* input blocking threshold */
+	unsigned int	hiwat;		/* output high water mark */
+	unsigned int	lowat;		/* output low water mark */
+	unsigned int	backlog;	/* samples of output backlog to gen. */
+};
+
+typedef struct audio_info audio_info_t;
+
+#define AUDIO_INITINFO(p)\
+	(void)memset((void *)(p), 0xff, sizeof(struct audio_info))
+
+#define AUDIO_GETINFO	_IOR('A', 21, audio_info_t)
+#define AUDIO_SETINFO	_IOWR('A', 22, audio_info_t)
+#define AUDIO_DRAIN	_IO('A', 23)
+#define AUDIO_FLUSH	_IO('A', 24)
+#define AUDIO_WSEEK	_IOR('A', 25, unsigned int)
+#define AUDIO_RERROR	_IOR('A', 26, int)
+#define AUDIO_WERROR	_IOR('A', 27, int)
+
+/*
+ * Low level interface to the amd79c30.
+ * Internal registers of the MAP block,
+ * the Main Audio Processor.
+ */
+struct mapreg {
+	unsigned short	mr_x[8];
+	unsigned short	mr_r[8];
+	unsigned short	mr_gx;
+	unsigned short	mr_gr;
+	unsigned short	mr_ger;
+	unsigned short	mr_stgr;
+	unsigned short	mr_ftgr;
+	unsigned short	mr_atgr;
+	unsigned char	mr_mmr1;
+	unsigned char	mr_mmr2;
+};
+
+#define AUDIO_GETMAP	_IOR('A', 27, struct mapreg)
+#define	AUDIO_SETMAP	_IOW('A', 28, struct mapreg)
+
+/*
+ * Compatibility with Sun interface
+ */
+struct	audio_ioctl {
+	short	control;
+	unsigned char	data[46];
+};
+
+#define AUDIOGETREG		_IOWR('i',1,struct audio_ioctl)
+#define AUDIOSETREG		_IOW('i',2,struct audio_ioctl)
+
+#endif /* _DEVICE_AUDIO_STATUS_H_ */