/*
 * Copyright (c) 1999 Cameron Grant <gandalf@vilnya.demon.co.uk>
 * 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.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
 *
 * $FreeBSD$
 */

#define AC97_MUTE	0x8000

#define AC97_REG_RESET	0x00
#define AC97_MIX_MASTER	0x02
#define AC97_MIX_PHONES	0x04
#define AC97_MIX_MONO 	0x06
#define AC97_MIX_TONE	0x08
#define AC97_MIX_BEEP	0x0a
#define AC97_MIX_PHONE	0x0c
#define AC97_MIX_MIC	0x0e
#define AC97_MIX_LINE	0x10
#define AC97_MIX_CD	0x12
#define AC97_MIX_VIDEO	0x14
#define AC97_MIX_AUX	0x16
#define AC97_MIX_PCM	0x18
#define AC97_REG_RECSEL	0x1a
#define AC97_MIX_RGAIN	0x1c
#define AC97_MIX_MGAIN	0x1e
#define AC97_REG_GEN	0x20
#define AC97_REG_3D	0x22
#define AC97_REG_POWER	0x26
#define AC97_REGEXT_ID		0x28
#define 	AC97_EXTCAP_VRA		(1 << 0)
#define 	AC97_EXTCAP_DRA		(1 << 1)
#define 	AC97_EXTCAP_VRM		(1 << 3)
#define		AC97_EXTCAPS (AC97_EXTCAP_VRA | AC97_EXTCAP_DRA | AC97_EXTCAP_VRM)
#define AC97_REGEXT_STAT	0x2a
#define AC97_REGEXT_FDACRATE	0x2c
#define AC97_REGEXT_SDACRATE	0x2e
#define AC97_REGEXT_LDACRATE	0x30
#define AC97_REGEXT_LADCRATE	0x32
#define AC97_REGEXT_MADCRATE	0x34
#define AC97_MIXEXT_CLFE	0x36
#define AC97_MIXEXT_SURROUND	0x38
#define AC97_REG_ID1	0x7c
#define AC97_REG_ID2	0x7e

typedef u_int32_t (ac97_init)(void *devinfo);
typedef u_int32_t (ac97_read)(void *devinfo, int regno);
typedef void (ac97_write)(void *devinfo, int regno, u_int32_t data);

extern snd_mixer ac97_mixer;
struct ac97_info;

struct ac97_info *ac97_create(device_t dev, void *devinfo, ac97_init *init,
			      ac97_read *rd, ac97_write *wr);
int ac97_setrate(struct ac97_info *codec, int which, int rate);
int ac97_setextmode(struct ac97_info *codec, u_int16_t mode);