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#ifndef DS1307_H
#define DS1307_H
/*
* linux/include/linux/ds1307.h
*
* Author: Abraham van der Merwe <abraham@2d3d.co.za>
*
* Linux support for the Dallas Semiconductor DS1307 Serial Real-Time
* Clock.
*
* Based on code from the lm-sensors project which is available
* at http://www.lm-sensors.org/ and Russell King's PCF8583 Real-Time
* Clock driver (linux/drivers/acorn/char/pcf8583.c).
*
* This source code is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* version 2 as published by the Free Software Foundation.
*/
#include <linux/types.h>
/* practically the same as struct rtc_time, but without tm_yday and tm_isdst */
struct ds1307_date {
int tm_sec;
int tm_min;
int tm_hour;
int tm_mday;
int tm_mon;
int tm_year;
int tm_wday;
};
struct ds1307_memory {
u8 offset; /* 0 - 55 */
u8 buf[56]; /* data */
u8 length; /* offset + length <= 50 */
};
/* size of the rtc non-volatile ram */
#define DS1307_SIZE 56
/* the following frequencies are supported */
#define DS1307_FREQ_1HZ 1
#define DS1307_FREQ_4KHZ 4096
#define DS1307_FREQ_8KHZ 8192
#define DS1307_FREQ_32KHZ 32768
#define DS1307_GET_DATE _IOR ('d',0,struct ds1307_date *)
#define DS1307_SET_DATE _IOW ('d',1,struct ds1307_date *)
#define DS1307_IRQ_ON _IO ('d',2)
#define DS1307_IRQ_OFF _IO ('d',3)
#define DS1307_GET_FREQ _IOR ('d',4,u16 *)
#define DS1307_SET_FREQ _IOW ('d',5,u16 *)
#define DS1307_READ _IOR ('d',6,struct ds1307_memory *)
#define DS1307_WRITE _IOW ('d',7,struct ds1307_memory *)
#define DS1307_ENABLE _IO ('d',8)
#endif /* #ifdef DS1307_H */
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