1/*-
2 * Copyright (c) 2000 The NetBSD Foundation, Inc.
3 * All rights reserved.
4 *
5 * This code is derived from software contributed to The NetBSD Foundation
6 * by Tyler C. Sarna.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
18 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
19 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
20 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
21 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
22 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
24 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
25 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
26 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
27 * POSSIBILITY OF SUCH DAMAGE.
28 *
29 * $FreeBSD$
30 */
31
32#ifndef _VIA_H
33#define _VIA_H
34
35/*
36 * VIA Technologies VT82C686A Southbridge Audio Driver
37 *
38 * Documentation links:
39 *
40 * ftp://ftp.alsa-project.org/pub/manuals/via/686a.pdf
41 * ftp://ftp.alsa-project.org/pub/manuals/general/ac97r21.pdf
42 * ftp://ftp.alsa-project.org/pub/manuals/ad/AD1881_0.pdf (example AC'97 codec)
43 */
44
45#define VIA_AC97STATUS		0x40
46#define		VIA_AC97STATUS_RDY	0x01
47#define		VIA_AC97STATUS_LOWPWR	0x02
48#define		VIA_AC97STATUS_2RDY	0x04
49
50#define VIA_ACLINKCTRL		0x41
51#define         VIA_ACLINK_EN		0x80     /* ac link enab */
52#define         VIA_ACLINK_NRST		0x40     /* ~(ac reset) */
53#define         VIA_ACLINK_SYNC		0x20     /* ac sync */
54#define         VIA_ACLINK_VSR		0x08     /* var. samp. rate */
55#define         VIA_ACLINK_SGD		0x04     /* SGD enab */
56#define         VIA_ACLINK_FM		0x02     /* FM enab */
57#define         VIA_ACLINK_SB		0x01     /* SB enab */
58#define		VIA_ACLINK_DESIRED	(VIA_ACLINK_EN|VIA_ACLINK_NRST|VIA_ACLINK_VSR|VIA_ACLINK_SGD)
59#define VIA_PCICONF_FUNC_EN	0x42
60
61#define VIA_PLAY_STAT                 0x00
62#define VIA_RECORD_STAT               0x10
63#define         VIA_RPSTAT_INTR               0x03
64#define VIA_PLAY_CONTROL              0x01
65#define VIA_RECORD_CONTROL            0x11
66#define         VIA_RPCTRL_START              0x80
67#define         VIA_RPCTRL_TERMINATE          0x40
68#define VIA_PLAY_MODE                 0x02
69#define VIA_RECORD_MODE               0x12
70#define         VIA_RPMODE_INTR_FLAG          0x01
71#define         VIA_RPMODE_INTR_EOL           0x02
72#define         VIA_RPMODE_STEREO             0x10
73#define         VIA_RPMODE_16BIT              0x20
74#define         VIA_RPMODE_AUTOSTART          0x80
75#define VIA_PLAY_DMAOPS_BASE          0x04
76#define VIA_RECORD_DMAOPS_BASE        0x14
77#define VIA_PLAY_DMAOPS_COUNT         0x0C
78#define VIA_RECORD_DMAOPS_COUNT       0x1C
79
80#define VIA_CODEC_CTL                 0x80
81#define         VIA_CODEC_READ                0x00800000
82#define         VIA_CODEC_BUSY                0x01000000
83#define         VIA_CODEC_PRIVALID            0x02000000
84#define         VIA_CODEC_INDEX(x)            ((x)<<16)
85
86#endif /* _VIA_H */
87