1/* $NetBSD: ics2101reg.h,v 1.6 2005/12/11 12:21:27 christos Exp $ */
2
3/*-
4 * Copyright (c) 1996 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Ken Hornstein and John Kohl.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32/*
33 * Register defs for Integrated Circuit Systems, Inc. ICS-2101 mixer
34 * chip, used on Gravis UltraSound cards.
35 *
36 * Block diagram:
37 *                                  port #
38 *				       	0 +----+
39 *   Mic in (Right/Left)	-->--->---|    |
40 *					1 |    |	  amp --->---- amp out
41 *   Line in (Right/Left)	-->--->---|    |	   |
42 *					2 |    |	   |
43 *   CD in (Right/Left)		-->--->---|    |--->---+---+----->---- line out
44 *					3 |    |       |
45 *   GF1 Out (Right/Left)	-->--->---|    |       |
46 *					4 |    |       |
47 *   Unused (Right/Left)	-->--->---|    |       |
48 *					  +----+       v
49 *					ICS 2101       |
50 *						       |
51 *	        To GF1 Sample Input ---<---------------+
52 *
53 *  Master output volume: mixer channel #5
54 */
55
56/*
57 * ICS Mixer registers
58 */
59
60#define ICSMIX_CTRL_LEFT	0x00		/* Control left channel */
61#define ICSMIX_CTRL_RIGHT	0x01		/* Control right channel */
62#define ICSMIX_ATTN_LEFT	0x02		/* Attenuate left channel */
63#define ICSMIX_ATTN_RIGHT	0x03		/* Attenutate right channel */
64#define ICSMIX_PAEN		0x04		/* Panning control */
65#define ICSMIX_CHAN_0		0		/* Values for mixer channels */
66#define ICSMIX_CHAN_1		1
67#define ICSMIX_CHAN_2		2
68#define ICSMIX_CHAN_3		3
69#define ICSMIX_CHAN_4		4
70#define ICSMIX_CHAN_5		5
71
72#define	ICSMIX_MIN_ATTN		0x7f
73#define	ICSMIX_MAX_ATTN		0x00
74/*
75 * The ICS mixer is write-only--it cannot be queried for current settings.
76 * Drivers must keep track of current values themselves.
77 */
78