1 /* $NetBSD: mm58167var.h,v 1.4 2005/12/11 12:21:27 christos Exp $ */
2
3 /*-
4 * Copyright (c) 2001 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Matthew Fredette.
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 * 3. All advertising materials mentioning features or use of this software
19 * must display the following acknowledgement:
20 * This product includes software developed by the NetBSD
21 * Foundation, Inc. and its contributors.
22 * 4. Neither the name of The NetBSD Foundation nor the names of its
23 * contributors may be used to endorse or promote products derived
24 * from this software without specific prior written permission.
25 *
26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
36 * POSSIBILITY OF SUCH DAMAGE.
37 */
38
39 #ifndef _MM58167VAR_H
40 #define _MM58167VAR_H
41
42 /*
43 * Driver support for the National Semiconductor MM58167
44 * time-of-day chip. See
45 * http://www.national.com/ds/MM/MM58167B.pdf for data sheets.
46 */
47
48 struct mm58167_softc {
49 struct device mm58167_dev;
50
51 /* Pointers to bus_space */
52 bus_space_tag_t mm58167_regt;
53 bus_space_handle_t mm58167_regh;
54
55 /*
56 * Pointers to MM58167 registers. All of these values are in
57 * BCD.
58 */
59
60 /*
61 * The most significant digit of this first value is the
62 * milliseconds unit; least significant digit is undefined:
63 */
64 bus_size_t mm58167_msec_xxx;
65 /* both digits of this value make up centiseconds: */
66 bus_size_t mm58167_csec;
67 bus_size_t mm58167_sec;
68 bus_size_t mm58167_min;
69 bus_size_t mm58167_hour;
70 bus_size_t mm58167_wday;
71 bus_size_t mm58167_day;
72 bus_size_t mm58167_mon;
73
74 /*
75 * The MM58167 has compare latches that line up with the
76 * above, interrupt registers, etc., but we don't use them, so
77 * we don't mention them here.
78 */
79 bus_size_t mm58167_status; /* bad counter read status */
80 bus_size_t mm58167_go; /* GO - start at integral seconds */
81
82 /*
83 * We keep a TODR handle in the softc to save
84 * us from having to allocate it ourselves.
85 * However, only mm58167.c should know this.
86 */
87 struct todr_chip_handle _mm58167_todr_handle;
88 };
89
90 todr_chip_handle_t mm58167_attach(struct mm58167_softc *);
91
92 #endif /* _MM58167VAR_H */
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