projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 5e9f4f2e MG |
1 | /* |
| 2 | * Definitions for the ST M41T00 family of i2c rtc chips. | |
| 3 | * | |
| 4 | * Author: Mark A. Greer <mgreer@mvista.com> | |
| 5 | * | |
| 6 | * 2005, 2006 (c) MontaVista Software, Inc. This file is licensed under | |
| 7 | * the terms of the GNU General Public License version 2. This program | |
| 8 | * is licensed "as is" without any warranty of any kind, whether express | |
| 9 | * or implied. | |
| 10 | */ | |
| 11 | ||
| 12 | #ifndef _M41T00_H | |
| 13 | #define _M41T00_H | |
| 14 | ||
| 15 | #define M41T00_DRV_NAME "m41t00" | |
| 16 | #define M41T00_I2C_ADDR 0x68 | |
| 17 | ||
| 18 | #define M41T00_TYPE_M41T00 0 | |
| 19 | #define M41T00_TYPE_M41T81 81 | |
| 20 | #define M41T00_TYPE_M41T85 85 | |
| 21 | ||
| 22 | struct m41t00_platform_data { | |
| 23 | u8 type; | |
| 24 | u8 i2c_addr; | |
| 25 | u8 sqw_freq; | |
| 26 | }; | |
| 27 | ||
| 28 | /* SQW output disabled, this is default value by power on */ | |
| 29 | #define M41T00_SQW_DISABLE (0) | |
| 30 | ||
| 31 | #define M41T00_SQW_32KHZ (1<<4) /* 32.768 KHz */ | |
| 32 | #define M41T00_SQW_8KHZ (2<<4) /* 8.192 KHz */ | |
| 33 | #define M41T00_SQW_4KHZ (3<<4) /* 4.096 KHz */ | |
| 34 | #define M41T00_SQW_2KHZ (4<<4) /* 2.048 KHz */ | |
| 35 | #define M41T00_SQW_1KHZ (5<<4) /* 1.024 KHz */ | |
| 36 | #define M41T00_SQW_512HZ (6<<4) /* 512 Hz */ | |
| 37 | #define M41T00_SQW_256HZ (7<<4) /* 256 Hz */ | |
| 38 | #define M41T00_SQW_128HZ (8<<4) /* 128 Hz */ | |
| 39 | #define M41T00_SQW_64HZ (9<<4) /* 64 Hz */ | |
| 40 | #define M41T00_SQW_32HZ (10<<4) /* 32 Hz */ | |
| 41 | #define M41T00_SQW_16HZ (11<<4) /* 16 Hz */ | |
| 42 | #define M41T00_SQW_8HZ (12<<4) /* 8 Hz */ | |
| 43 | #define M41T00_SQW_4HZ (13<<4) /* 4 Hz */ | |
| 44 | #define M41T00_SQW_2HZ (14<<4) /* 2 Hz */ | |
| 45 | #define M41T00_SQW_1HZ (15<<4) /* 1 Hz */ | |
| 46 | ||
| 47 | extern ulong m41t00_get_rtc_time(void); | |
| 48 | extern int m41t00_set_rtc_time(ulong nowtime); | |
| 49 | ||
| 50 | #endif /* _M41T00_H */ |