| Mark Zhan | 2e774c7 | 2007-07-17 04:05:05 -0700 | [diff] [blame] | 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 | |
| 49 | struct 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_ */ |