Annotation of sys/dev/ic/ics2101reg.h, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: ics2101reg.h,v 1.2 1996/03/05 08:28:07 niklas Exp $ */
2: /* $NetBSD: ics2101reg.h,v 1.3 1996/02/05 02:18:52 jtc Exp $ */
3:
4: /*-
5: * Copyright (c) 1996 The NetBSD Foundation, Inc.
6: * All rights reserved.
7: *
8: * This code is derived from software contributed to The NetBSD Foundation
9: * by Ken Hornstein and John Kohl.
10: *
11: * Redistribution and use in source and binary forms, with or without
12: * modification, are permitted provided that the following conditions
13: * are met:
14: * 1. Redistributions of source code must retain the above copyright
15: * notice, this list of conditions and the following disclaimer.
16: * 2. Redistributions in binary form must reproduce the above copyright
17: * notice, this list of conditions and the following disclaimer in the
18: * documentation and/or other materials provided with the distribution.
19: * 3. All advertising materials mentioning features or use of this software
20: * must display the following acknowledgement:
21: * This product includes software developed by the NetBSD
22: * Foundation, Inc. and its contributors.
23: * 4. Neither the name of The NetBSD Foundation nor the names of its
24: * contributors may be used to endorse or promote products derived
25: * from this software without specific prior written permission.
26: *
27: * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
28: * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
29: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
30: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE
31: * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
32: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
33: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
34: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
35: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
36: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
37: * POSSIBILITY OF SUCH DAMAGE.
38: */
39:
40: /*
41: * Register defs for Integrated Circuit Systems, Inc. ICS-2101 mixer
42: * chip, used on Gravis UltraSound cards.
43: *
44: * Block diagram:
45: * port #
46: * 0 +----+
47: * Mic in (Right/Left) -->--->---| |
48: * 1 | | amp --->---- amp out
49: * Line in (Right/Left) -->--->---| | |
50: * 2 | | |
51: * CD in (Right/Left) -->--->---| |--->---+---+----->---- line out
52: * 3 | | |
53: * GF1 Out (Right/Left) -->--->---| | |
54: * 4 | | |
55: * Unused (Right/Left) -->--->---| | |
56: * +----+ v
57: * ICS 2101 |
58: * |
59: * To GF1 Sample Input ---<---------------+
60: *
61: * Master output volume: mixer channel #5
62: */
63:
64: /*
65: * ICS Mixer registers
66: */
67:
68: #define ICSMIX_CTRL_LEFT 0x00 /* Control left channel */
69: #define ICSMIX_CTRL_RIGHT 0x01 /* Control right channel */
70: #define ICSMIX_ATTN_LEFT 0x02 /* Attenuate left channel */
71: #define ICSMIX_ATTN_RIGHT 0x03 /* Attenutate right channel */
72: #define ICSMIX_PAEN 0x04 /* Panning control */
73: #define ICSMIX_CHAN_0 0 /* Values for mixer channels */
74: #define ICSMIX_CHAN_1 1
75: #define ICSMIX_CHAN_2 2
76: #define ICSMIX_CHAN_3 3
77: #define ICSMIX_CHAN_4 4
78: #define ICSMIX_CHAN_5 5
79:
80: #define ICSMIX_MIN_ATTN 0x7f
81: #define ICSMIX_MAX_ATTN 0x00
82: /*
83: * The ICS mixer is write-only--it cannot be queried for current settings.
84: * Drivers must keep track of current values themselves.
85: */
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