/*	$NetBSD: am7930reg.h,v 1.3 1999/03/14 22:29:01 jonathan Exp $ */

/*
 * Copyright (c) 1992, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * This software was developed by the Computer Systems Engineering group
 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
 * contributed to Berkeley.
 *
 * All advertising materials mentioning features or use of this software
 * must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Lawrence Berkeley Laboratory.
 *
 * 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 University of
 *	California, Berkeley and its contributors.
 * 4. Neither the name of the University 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 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.
 *
 *	@(#)bsd_audioreg.h	8.1 (Berkeley) 6/11/93
 */

/*
 * Bit encodings for chip commands from "Microprocessor Access Guide for
 * Indirect Registers", p.19 Am79C30A/32A Advanced Micro Devices spec 
 * sheet (preliminary).
 *
 * Indirect register numbers (the value written into cr to select a given
 * chip registers) have the form AMDR_*.  Register fields look like AMD_*.
 */

struct am7930 {
	u_char	cr;		/* command register (wo) */
#define ir cr			/* interrupt register (ro) */
	u_char	dr;		/* data register (rw) */
	u_char	dsr1;		/* D-channel status register 1 (ro) */
	u_char	der;		/* D-channel error register (ro) */
	u_char	dctb;		/* D-channel transmit register (wo) */
#define dcrb dctb		/* D-channel receive register (ro) */
	u_char	bbtb;		/* Bb-channel transmit register (wo) */
#define bbrb bbtb		/* Bb-channel receive register (ro) */
	u_char	bctb;		/* Bc-channel transmit register (wo) */
#define bcrb bctb		/* Bc-channel receive register (ro) */
	u_char	dsr2;		/* D-channel status register 2 (ro) */
};

#define REG_CR	offsetof(struct am7930, cr)
#define REG_DR	offsetof(struct am7930, dr)
#define RREG_DSR1	offsetof(struct am7930, dsr1r)
#define REG_DER	offsetof(struct am7930, der)
#define REG_DCTB	offsetof(struct am7930, dctb)
#define REG_BCTB	offsetof(struct am7930, bctb)
#define REG_DSR2	offsetof(struct am7930, dsr2)

/* aliases */
#define REG_DCRB	AM7930_REG_DCTB
#define REG_BBRB	AM7930_REG_BBTB
#define REG_BCRB	AM7930_REG_BCTB


#define AMDR_INIT	0x21
#define 	AMD_INIT_PMS_IDLE		0x00
#define 	AMD_INIT_PMS_ACTIVE		0x01
#define 	AMD_INIT_PMS_ACTIVE_DATA	0x02
#define 	AMD_INIT_INT_DISABLE		(0x01 << 2)
#define 	AMD_INIT_CDS_DIV2		(0x00 << 3)
#define 	AMD_INIT_CDS_DIV1		(0x01 << 3)
#define 	AMD_INIT_CDS_DIV4		(0x02 << 3)
#define 	AMD_INIT_AS_RX			(0x01 << 6)
#define 	AMD_INIT_AS_TX			(0x01 << 7)

#define AMDR_LIU_LSR	0xa1
#define AMDR_LIU_LPR	0xa2
#define AMDR_LIU_LMR1	0xa3
#define AMDR_LIU_LMR2	0xa4
#define AMDR_LIU_2_4	0xa5
#define AMDR_LIU_MF	0xa6
#define AMDR_LIU_MFSB	0xa7
#define AMDR_LIU_MFQB	0xa8

#define AMDR_MUX_MCR1	0x41
#define AMDR_MUX_MCR2	0x42
#define AMDR_MUX_MCR3	0x43
#define 	AMD_MCRCHAN_NC		0x00
#define 	AMD_MCRCHAN_B1		0x01
#define 	AMD_MCRCHAN_B2		0x02
#define 	AMD_MCRCHAN_BA		0x03
#define 	AMD_MCRCHAN_BB		0x04
#define 	AMD_MCRCHAN_BC		0x05
#define 	AMD_MCRCHAN_BD		0x06
#define 	AMD_MCRCHAN_BE		0x07
#define 	AMD_MCRCHAN_BF		0x08
#define AMDR_MUX_MCR4	0x44
#define		AMD_MCR4_INT_ENABLE	(1 << 3)
#define		AMD_MCR4_SWAPBB		(1 << 4)
#define		AMD_MCR4_SWAPBC		(1 << 5)

#define AMDR_MUX_1_4	0x45

#define AMDR_MAP_X	0x61
#define AMDR_MAP_R	0x62
#define AMDR_MAP_GX	0x63
#define AMDR_MAP_GR	0x64
#define AMDR_MAP_GER	0x65
#define AMDR_MAP_STG	0x66
#define AMDR_MAP_FTGR	0x67
#define AMDR_MAP_ATGR	0x68
#define AMDR_MAP_MMR1	0x69
#define		AMD_MMR1_ALAW	0x01
#define		AMD_MMR1_GX	0x02
#define		AMD_MMR1_GR	0x04
#define		AMD_MMR1_GER	0x08
#define		AMD_MMR1_X	0x10
#define		AMD_MMR1_R	0x20
#define		AMD_MMR1_STG	0x40
#define		AMD_MMR1_LOOP	0x80
#define AMDR_MAP_MMR2	0x6a
#define		AMD_MMR2_AINB	0x01
#define		AMD_MMR2_LS	0x02
#define		AMD_MMR2_DTMF	0x04
#define		AMD_MMR2_GEN	0x08
#define		AMD_MMR2_RNG		0x10
#define		AMD_MMR2_DIS_HPF	0x20
#define		AMD_MMR2_DIS_AZ		0x40
#define AMDR_MAP_1_10	0x6b

#define AMDR_DLC_FRAR123 0x81
#define AMDR_DLC_SRAR123 0x82
#define AMDR_DLC_TAR	0x83
#define AMDR_DLC_DRLR	0x84
#define AMDR_DLC_DTCR	0x85
#define AMDR_DLC_DMR1	0x86
#define AMDR_DLC_DMR2	0x87
#define AMDR_DLC_1_7	0x88
#define AMDR_DLC_DRCR	0x89
#define AMDR_DLC_RNGR1	0x8a
#define AMDR_DLC_RNGR2	0x8b
#define AMDR_DLC_FRAR4	0x8c
#define AMDR_DLC_SRAR4	0x8d
#define AMDR_DLC_DMR3	0x8e
#define AMDR_DLC_DMR4	0x8f
#define AMDR_DLC_12_15	0x90
#define AMDR_DLC_ASR	0x91
