79 lines
3.0 KiB
C
79 lines
3.0 KiB
C
/* $OpenBSD: ics2101reg.h,v 1.3 2008/06/26 05:42:15 ray Exp $ */
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/* $NetBSD: ics2101reg.h,v 1.3 1996/02/05 02:18:52 jtc Exp $ */
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/*-
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* Copyright (c) 1996 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Ken Hornstein and John Kohl.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Register defs for Integrated Circuit Systems, Inc. ICS-2101 mixer
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* chip, used on Gravis UltraSound cards.
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*
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* Block diagram:
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* port #
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* 0 +----+
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* Mic in (Right/Left) -->--->---| |
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* 1 | | amp --->---- amp out
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* Line in (Right/Left) -->--->---| | |
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* 2 | | |
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* CD in (Right/Left) -->--->---| |--->---+---+----->---- line out
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* 3 | | |
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* GF1 Out (Right/Left) -->--->---| | |
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* 4 | | |
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* Unused (Right/Left) -->--->---| | |
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* +----+ v
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* ICS 2101 |
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* |
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* To GF1 Sample Input ---<---------------+
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*
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* Master output volume: mixer channel #5
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*/
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/*
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* ICS Mixer registers
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*/
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#define ICSMIX_CTRL_LEFT 0x00 /* Control left channel */
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#define ICSMIX_CTRL_RIGHT 0x01 /* Control right channel */
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#define ICSMIX_ATTN_LEFT 0x02 /* Attenuate left channel */
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#define ICSMIX_ATTN_RIGHT 0x03 /* Attenutate right channel */
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#define ICSMIX_PAEN 0x04 /* Panning control */
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#define ICSMIX_CHAN_0 0 /* Values for mixer channels */
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#define ICSMIX_CHAN_1 1
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#define ICSMIX_CHAN_2 2
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#define ICSMIX_CHAN_3 3
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#define ICSMIX_CHAN_4 4
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#define ICSMIX_CHAN_5 5
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#define ICSMIX_MIN_ATTN 0x7f
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#define ICSMIX_MAX_ATTN 0x00
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/*
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* The ICS mixer is write-only--it cannot be queried for current settings.
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* Drivers must keep track of current values themselves.
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*/
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