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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:  */