]> CyberLeo.Net >> Repos - FreeBSD/releng/9.2.git/blob - sys/powerpc/mpc85xx/ds1553_reg.h
- Copy stable/9 to releng/9.2 as part of the 9.2-RELEASE cycle.
[FreeBSD/releng/9.2.git] / sys / powerpc / mpc85xx / ds1553_reg.h
1 /*-
2  * Copyright (C) 2006-2008 Semihalf, Grzegorz Bernacki
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  *
14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17  * ARE DISCLAIMED.  IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24  * SUCH DAMAGE.
25  *
26  * $FreeBSD$
27  */
28
29 #ifndef _DEV_RTC_DS1553_H_
30 #define _DEV_RTC_DS1553_H_
31
32 /* DS1553 registers */
33 #define DS1553_NVRAM_SIZE               0x1ff0
34 #define DS1553_OFF_FLAGS                0x1ff0
35 #define DS1553_OFF_ALARM_SECONDS        0x1ff2
36 #define DS1553_OFF_ALARM_MINUTES        0x1ff3
37 #define DS1553_OFF_ALARM_HOURS          0x1ff4
38 #define DS1553_OFF_ALARM_DATE           0x1ff5
39 #define DS1553_OFF_INTERRUPTS           0x1ff6
40 #define DS1553_OFF_WATCHDOG             0x1ff7
41 #define DS1553_OFF_CONTROL              0x1ff8
42 #define DS1553_OFF_SECONDS              0x1ff9
43 #define DS1553_OFF_MINUTES              0x1ffa
44 #define DS1553_OFF_HOURS                0x1ffb
45 #define DS1553_OFF_DAYOFWEEK            0x1ffc
46 #define DS1553_OFF_DATE                 0x1ffd
47 #define DS1553_OFF_MONTH                0x1ffe
48 #define DS1553_OFF_YEAR                 0x1fff
49
50 /* dayofweek register's bits */
51 #define DS1553_BIT_FREQ_TEST            0x40 /* frequency test bit */
52
53 /* seconds register's bit */
54 #define DS1553_BIT_OSC                  0x80 /* oscillator start/stop bit */
55
56 /* control register's bits */
57 #define DS1553_BIT_WRITE                0x80 /* write */
58 #define DS1553_BIT_READ                 0x40 /* read */
59
60 /* watchdog register's bits */
61 #define DS1553_BIT_WATCHDOG             0x80 /* watchdog steering bit */
62 #define DS1553_BIT_BMB4                 0x40 /* watchdog multiplier bit4 */
63 #define DS1553_BIT_BMB3                 0x20 /* watchdog multiplier bit3 */
64 #define DS1553_BIT_BMB2                 0x10 /* watchdog multiplier bit2 */
65 #define DS1553_BIT_BMB1                 0x8  /* watchdog multiplier bit1 */
66 #define DS1553_BIT_BMB0                 0x4  /* watchdog multiplier bit0 */
67 #define DS1553_BIT_RB1                  0x2  /* watchdog resolution bit1 */
68 #define DS1553_BIT_RB0                  0x1  /* watchdog resolution bit0 */
69
70 /* alarm seconds/minutes/hours/date register's bit */
71 #define DS1553_BIT_AM                   0x80 /* alarm mask bit */
72
73 /* flag register's bits */
74 #define DS1553_BIT_BLF                  0x10 /* battery flag */
75 #define DS1553_BIT_WF                   0x80 /* watchdog flag */
76
77 /* register's mask */
78 #define DS1553_MASK_MONTH               0x1f
79 #define DS1553_MASK_DATE                0x3f
80 #define DS1553_MASK_DAYOFWEEK           0x7
81 #define DS1553_MASK_HOUR                0x3f
82 #define DS1553_MASK_MINUTES             0x7f
83 #define DS1553_MASK_SECONDS             0x7f
84
85 struct ds1553_softc {
86
87         bus_space_tag_t         sc_bst; /* bus space tag */
88         bus_space_handle_t      sc_bsh; /* bus space handle */
89
90         int                     rid;    /* resource id */
91         struct resource         *res;
92         struct mtx              sc_mtx; /* hardware mutex */
93
94         uint32_t                year_offset;
95         /* read/write functions */
96         uint8_t                 (*sc_read)(device_t, bus_size_t);
97         void                    (*sc_write)(device_t, bus_size_t, uint8_t);
98 };
99
100 /* device interface */
101 int ds1553_attach(device_t);
102
103 /* clock interface */
104 int ds1553_gettime(device_t, struct timespec *);
105 int ds1553_settime(device_t, struct timespec *);
106
107 #endif /* _DEV_RTC_DS1553_H_ */