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/* $OpenBSD: ics2101reg.h,v 1.4 2024/09/01 03:08:56 jsg Exp $ */
/* $NetBSD: ics2101reg.h,v 1.3 1996/02/05 02:18:52 jtc Exp $ */
/*-
* Copyright (c) 1996 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Ken Hornstein and John Kohl.
*
* 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 NETBSD FOUNDATION, INC. 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.
*/
/*
* Register defs for Integrated Circuit Systems, Inc. ICS-2101 mixer
* chip, used on Gravis UltraSound cards.
*
* Block diagram:
* port #
* 0 +----+
* Mic in (Right/Left) -->--->---| |
* 1 | | amp --->---- amp out
* Line in (Right/Left) -->--->---| | |
* 2 | | |
* CD in (Right/Left) -->--->---| |--->---+---+----->---- line out
* 3 | | |
* GF1 Out (Right/Left) -->--->---| | |
* 4 | | |
* Unused (Right/Left) -->--->---| | |
* +----+ v
* ICS 2101 |
* |
* To GF1 Sample Input ---<---------------+
*
* Master output volume: mixer channel #5
*/
/*
* ICS Mixer registers
*/
#define ICSMIX_CTRL_LEFT 0x00 /* Control left channel */
#define ICSMIX_CTRL_RIGHT 0x01 /* Control right channel */
#define ICSMIX_ATTN_LEFT 0x02 /* Attenuate left channel */
#define ICSMIX_ATTN_RIGHT 0x03 /* Attenuate right channel */
#define ICSMIX_PAEN 0x04 /* Panning control */
#define ICSMIX_CHAN_0 0 /* Values for mixer channels */
#define ICSMIX_CHAN_1 1
#define ICSMIX_CHAN_2 2
#define ICSMIX_CHAN_3 3
#define ICSMIX_CHAN_4 4
#define ICSMIX_CHAN_5 5
#define ICSMIX_MIN_ATTN 0x7f
#define ICSMIX_MAX_ATTN 0x00
/*
* The ICS mixer is write-only--it cannot be queried for current settings.
* Drivers must keep track of current values themselves.
*/
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