Commit cd017fbdd33f2d8294b0e0324faa1dc7750b4af0
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Add definitions for the Dallas DS1742 RTC / non-volatile memory.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Showing 1 changed file with 53 additions and 0 deletions Side-by-side Diff
include/linux/ds1742rtc.h
| 1 | +/* | |
| 2 | + * ds1742rtc.h - register definitions for the Real-Time-Clock / CMOS RAM | |
| 3 | + * | |
| 4 | + * Copyright (C) 1999-2001 Toshiba Corporation | |
| 5 | + * Copyright (C) 2003 Ralf Baechle (ralf@linux-mips.org) | |
| 6 | + * | |
| 7 | + * Permission is hereby granted to copy, modify and redistribute this code | |
| 8 | + * in terms of the GNU Library General Public License, Version 2 or later, | |
| 9 | + * at your option. | |
| 10 | + */ | |
| 11 | +#ifndef __LINUX_DS1742RTC_H | |
| 12 | +#define __LINUX_DS1742RTC_H | |
| 13 | + | |
| 14 | +#include <asm/ds1742.h> | |
| 15 | + | |
| 16 | +#define RTC_BRAM_SIZE 0x800 | |
| 17 | +#define RTC_OFFSET 0x7f8 | |
| 18 | + | |
| 19 | +/* | |
| 20 | + * Register summary | |
| 21 | + */ | |
| 22 | +#define RTC_CONTROL (RTC_OFFSET + 0) | |
| 23 | +#define RTC_CENTURY (RTC_OFFSET + 0) | |
| 24 | +#define RTC_SECONDS (RTC_OFFSET + 1) | |
| 25 | +#define RTC_MINUTES (RTC_OFFSET + 2) | |
| 26 | +#define RTC_HOURS (RTC_OFFSET + 3) | |
| 27 | +#define RTC_DAY (RTC_OFFSET + 4) | |
| 28 | +#define RTC_DATE (RTC_OFFSET + 5) | |
| 29 | +#define RTC_MONTH (RTC_OFFSET + 6) | |
| 30 | +#define RTC_YEAR (RTC_OFFSET + 7) | |
| 31 | + | |
| 32 | +#define RTC_CENTURY_MASK 0x3f | |
| 33 | +#define RTC_SECONDS_MASK 0x7f | |
| 34 | +#define RTC_DAY_MASK 0x07 | |
| 35 | + | |
| 36 | +/* | |
| 37 | + * Bits in the Control/Century register | |
| 38 | + */ | |
| 39 | +#define RTC_WRITE 0x80 | |
| 40 | +#define RTC_READ 0x40 | |
| 41 | + | |
| 42 | +/* | |
| 43 | + * Bits in the Seconds register | |
| 44 | + */ | |
| 45 | +#define RTC_STOP 0x80 | |
| 46 | + | |
| 47 | +/* | |
| 48 | + * Bits in the Day register | |
| 49 | + */ | |
| 50 | +#define RTC_BATT_FLAG 0x80 | |
| 51 | +#define RTC_FREQ_TEST 0x40 | |
| 52 | + | |
| 53 | +#endif /* __LINUX_DS1742RTC_H */ |