1 /* $OpenBSD: intersil7170.h,v 1.1 1997/08/08 08:13:04 downsj Exp $ */
2 /* $NetBSD: intersil7170.h,v 1.1 1997/05/02 06:15:28 jeremy 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 Adam Glass.
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 FOUNDATION OR CONTRIBUTORS
31 * BE 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 #ifndef _INTERSIL7170_H
41 #define _INTERSIL7170_H
42
43 /*
44 * Driver support for the intersil7170 used in sun[34]s to provide
45 * real time clock and time-of-day support.
46 *
47 * Derived from: datasheet "ICM7170 a uP-Compatible Real-Time Clock"
48 * document #301680-005, Dec 85
49 */
50
51 struct intersil_dt { /* from p. 7 of 10 */
52 u_int8_t dt_csec;
53 u_int8_t dt_hour;
54 u_int8_t dt_min;
55 u_int8_t dt_sec;
56 u_int8_t dt_month;
57 u_int8_t dt_day;
58 u_int8_t dt_year;
59 u_int8_t dt_dow;
60 };
61
62 struct intersil7170 {
63 struct intersil_dt counters;
64 struct intersil_dt clk_ram; /* should be ok as both are word aligned */
65 u_int8_t clk_intr_reg;
66 u_int8_t clk_cmd_reg;
67 };
68
69 /* bit assignments for command register, p. 6 of 10, write-only */
70 #define INTERSIL_CMD_FREQ_32K 0x0
71 #define INTERSIL_CMD_FREQ_1M 0x1
72 #define INTERSIL_CMD_FREQ_2M 0x2
73 #define INTERSIL_CMD_FREQ_4M 0x3
74
75 #define INTERSIL_CMD_12HR_MODE 0x0
76 #define INTERSIL_CMD_24HR_MODE 0x4
77
78 #define INTERSIL_CMD_STOP 0x0
79 #define INTERSIL_CMD_RUN 0x8
80
81 #define INTERSIL_CMD_IDISABLE 0x0
82 #define INTERSIL_CMD_IENABLE 0x10
83
84 #define INTERSIL_CMD_TEST_MODE 0x20
85 #define INTERSIL_CMD_NORMAL_MODE 0x0
86
87 /* bit assignments for interrupt register r/w, p 7 of 10*/
88
89 #define INTERSIL_INTER_ALARM 0x1 /* r/w */
90 #define INTERSIL_INTER_CSECONDS 0x2 /* r/w */
91 #define INTERSIL_INTER_DSECONDS 0x4 /* r/w */
92 #define INTERSIL_INTER_SECONDS 0x8 /* r/w */
93 #define INTERSIL_INTER_MINUTES 0x10 /* r/w */
94 #define INTERSIL_INTER_HOURS 0x20 /* r/w */
95 #define INTERSIL_INTER_DAYS 0x40 /* r/w */
96 #define INTERSIL_INTER_PENDING 0x80 /* read-only */
97
98 #define INTERSIL_INTER_BITS "\20\10PENDING\7DAYS\6HRS\5MIN\4SCDS\3DSEC\2CSEC\1ALARM"
99
100 #endif /* _INTERSIL7170_H */