sys/dev/ic/ics2101reg.h

   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  */