1 /* $NetBSD: intersil7170.h,v 1.4 2000/11/11 11:18:07 pk 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 Adam Glass.
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 _INTERSIL7170_H
40 #define _INTERSIL7170_H
41
42 /*
43 * Driver support for the intersil7170 used in sun[34]s to provide
44 * real time clock and time-of-day support.
45 *
46 * Derived from: datasheet "ICM7170 a uP-Compatible Real-Time Clock"
47 * document #301680-005, Dec 85
48 *
49 * Note that this device provides both time-of-day and interval timer
50 * functionality. Both functions use the same control registers. On top
51 * of that, the command control register is write-only. Currently, this
52 * driver assumes that the interval timer is to be enabled, and hence
53 * always sets/restores the INTERSIL_CMD_IENABLE control bit when
54 * manipulating the TOD.
55 */
56
57 struct intersil_dt { /* from p. 7 of 10 */
58 u_int8_t dt_csec;
59 u_int8_t dt_hour;
60 u_int8_t dt_min;
61 u_int8_t dt_sec;
62 u_int8_t dt_month;
63 u_int8_t dt_day;
64 u_int8_t dt_year;
65 u_int8_t dt_dow;
66 };
67
68 struct intersil7170 {
69 struct intersil_dt counters;
70 struct intersil_dt clk_ram; /* should be ok as both are word aligned */
71 u_int8_t clk_intr_reg;
72 u_int8_t clk_cmd_reg;
73 };
74
75 /* Indices to time-of-day clock registers */
76 #define INTERSIL_ICSEC 0
77 #define INTERSIL_IHOUR 1
78 #define INTERSIL_IMIN 2
79 #define INTERSIL_ISEC 3
80 #define INTERSIL_IMON 4
81 #define INTERSIL_IDAY 5
82 #define INTERSIL_IYEAR 6
83 #define INTERSIL_IDOW 7
84
85 #define INTERSIL_IINTR 16
86 #define INTERSIL_ICMD 17
87
88 /* bit assignments for command register, p. 6 of 10, write-only */
89 #define INTERSIL_CMD_FREQ_32K 0x0
90 #define INTERSIL_CMD_FREQ_1M 0x1
91 #define INTERSIL_CMD_FREQ_2M 0x2
92 #define INTERSIL_CMD_FREQ_4M 0x3
93
94 #define INTERSIL_CMD_12HR_MODE 0x0
95 #define INTERSIL_CMD_24HR_MODE 0x4
96
97 #define INTERSIL_CMD_STOP 0x0
98 #define INTERSIL_CMD_RUN 0x8
99
100 #define INTERSIL_CMD_IDISABLE 0x0
101 #define INTERSIL_CMD_IENABLE 0x10
102
103 #define INTERSIL_CMD_TEST_MODE 0x20
104 #define INTERSIL_CMD_NORMAL_MODE 0x0
105
106 /* bit assignments for interrupt register r/w, p 7 of 10 */
107
108 #define INTERSIL_INTER_ALARM 0x1 /* r/w */
109 #define INTERSIL_INTER_CSECONDS 0x2 /* r/w */
110 #define INTERSIL_INTER_DSECONDS 0x4 /* r/w */
111 #define INTERSIL_INTER_SECONDS 0x8 /* r/w */
112 #define INTERSIL_INTER_MINUTES 0x10 /* r/w */
113 #define INTERSIL_INTER_HOURS 0x20 /* r/w */
114 #define INTERSIL_INTER_DAYS 0x40 /* r/w */
115 #define INTERSIL_INTER_PENDING 0x80 /* read-only */
116
117 #define INTERSIL_INTER_BITS "\2\10PENDING\7DAYS\6HRS\5MIN\4SCDS\3DSEC\2CSEC\1ALARM"
118
119 #ifndef sun3 /* XXX sun3 does not use MI driver, which needs bus_space(9) */
120 todr_chip_handle_t intersil7170_attach(bus_space_tag_t, bus_space_handle_t, int);
121 #endif
122 #endif /* _INTERSIL7170_H */
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