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https://github.com/lm-sensors/lm-sensors.git
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Rudolf Marek
c9bd83748b
git-svn-id: http://lm-sensors.org/svn/lm-sensors/trunk@4157 7894878c-1315-0410-8ee3-d5d059ff63e0
60 lines
1.6 KiB
C
60 lines
1.6 KiB
C
#ifndef DS1307_H
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#define DS1307_H
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/*
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* linux/include/linux/ds1307.h
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*
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* Author: Abraham van der Merwe <abraham@2d3d.co.za>
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*
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* Linux support for the Dallas Semiconductor DS1307 Serial Real-Time
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* Clock.
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*
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* Based on code from the lm-sensors project which is available
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* at http://www.lm-sensors.org/ and Russell King's PCF8583 Real-Time
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* Clock driver (linux/drivers/acorn/char/pcf8583.c).
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*
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* This source code is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* version 2 as published by the Free Software Foundation.
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*/
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#include <linux/types.h>
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/* practically the same as struct rtc_time, but without tm_yday and tm_isdst */
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struct ds1307_date {
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int tm_sec;
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int tm_min;
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int tm_hour;
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int tm_mday;
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int tm_mon;
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int tm_year;
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int tm_wday;
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};
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struct ds1307_memory {
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u8 offset; /* 0 - 55 */
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u8 buf[56]; /* data */
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u8 length; /* offset + length <= 50 */
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};
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/* size of the rtc non-volatile ram */
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#define DS1307_SIZE 56
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/* the following frequencies are supported */
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#define DS1307_FREQ_1HZ 1
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#define DS1307_FREQ_4KHZ 4096
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#define DS1307_FREQ_8KHZ 8192
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#define DS1307_FREQ_32KHZ 32768
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#define DS1307_GET_DATE _IOR ('d',0,struct ds1307_date *)
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#define DS1307_SET_DATE _IOW ('d',1,struct ds1307_date *)
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#define DS1307_IRQ_ON _IO ('d',2)
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#define DS1307_IRQ_OFF _IO ('d',3)
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#define DS1307_GET_FREQ _IOR ('d',4,u16 *)
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#define DS1307_SET_FREQ _IOW ('d',5,u16 *)
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#define DS1307_READ _IOR ('d',6,struct ds1307_memory *)
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#define DS1307_WRITE _IOW ('d',7,struct ds1307_memory *)
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#define DS1307_ENABLE _IO ('d',8)
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#endif /* #ifdef DS1307_H */
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