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-rw-r--r--include/linux/rtc/m48t59.h57
1 files changed, 57 insertions, 0 deletions
diff --git a/include/linux/rtc/m48t59.h b/include/linux/rtc/m48t59.h
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+++ b/include/linux/rtc/m48t59.h
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1/*
2 * include/linux/rtc/m48t59.h
3 *
4 * Definitions for the platform data of m48t59 RTC chip driver.
5 *
6 * Copyright (c) 2007 Wind River Systems, Inc.
7 *
8 * Mark Zhan <rongkai.zhan@windriver.com>
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
13 */
14
15#ifndef _LINUX_RTC_M48T59_H_
16#define _LINUX_RTC_M48T59_H_
17
18/*
19 * M48T59 Register Offset
20 */
21#define M48T59_YEAR 0x1fff
22#define M48T59_MONTH 0x1ffe
23#define M48T59_MDAY 0x1ffd /* Day of Month */
24#define M48T59_WDAY 0x1ffc /* Day of Week */
25#define M48T59_WDAY_CB 0x20 /* Century Bit */
26#define M48T59_WDAY_CEB 0x10 /* Century Enable Bit */
27#define M48T59_HOUR 0x1ffb
28#define M48T59_MIN 0x1ffa
29#define M48T59_SEC 0x1ff9
30#define M48T59_CNTL 0x1ff8
31#define M48T59_CNTL_READ 0x40
32#define M48T59_CNTL_WRITE 0x80
33#define M48T59_WATCHDOG 0x1ff7
34#define M48T59_INTR 0x1ff6
35#define M48T59_INTR_AFE 0x80 /* Alarm Interrupt Enable */
36#define M48T59_INTR_ABE 0x20
37#define M48T59_ALARM_DATE 0x1ff5
38#define M48T59_ALARM_HOUR 0x1ff4
39#define M48T59_ALARM_MIN 0x1ff3
40#define M48T59_ALARM_SEC 0x1ff2
41#define M48T59_UNUSED 0x1ff1
42#define M48T59_FLAGS 0x1ff0
43#define M48T59_FLAGS_WDT 0x80 /* watchdog timer expired */
44#define M48T59_FLAGS_AF 0x40 /* alarm */
45#define M48T59_FLAGS_BF 0x10 /* low battery */
46
47#define M48T59_NVRAM_SIZE 0x1ff0
48
49struct m48t59_plat_data {
50 /* The method to access M48T59 registers,
51 * NOTE: The 'ofs' should be 0x00~0x1fff
52 */
53 void (*write_byte)(struct device *dev, u32 ofs, u8 val);
54 unsigned char (*read_byte)(struct device *dev, u32 ofs);
55};
56
57#endif /* _LINUX_RTC_M48T59_H_ */