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/* $OpenBSD: rtc.h,v 1.1 2004/02/01 05:09:49 drahn Exp $ */
/* $NetBSD: rtc.h,v 1.1 2001/02/23 21:23:50 reinoud Exp $ */
/*
* Copyright (c) 1994 Mark Brinicombe.
* Copyright (c) 1994 Brini.
* All rights reserved.
*
* This code is derived from software written for Brini by Mark Brinicombe
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Brini.
* 4. The name of the company nor the name of the author may be used to
* endorse or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY BRINI ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL BRINI OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* RiscBSD kernel project
*
* rtc.h
*
* Header file for RTC / CMOS stuff
*
* Created : 13/10/94
* Updated : 15/07/2000
*
* Based of kate/display/iiccontrol.c
*/
/*
* IIC addresses for RTC chip
* Two PCF8583 chips are supported on the IIC bus
*/
#define IIC_PCF8583_MASK 0xfc
#define IIC_PCF8583_ADDR 0xa0
#define RTC_Write (IIC_PCF8583_ADDR | IIC_WRITE)
#define RTC_Read (IIC_PCF8583_ADDR | IIC_READ)
typedef struct {
u_char rtc_micro;
u_char rtc_centi;
u_char rtc_sec;
u_char rtc_min;
u_char rtc_hour;
u_char rtc_day;
u_char rtc_mon;
u_char rtc_year;
u_char rtc_cen;
} rtc_t;
#define RTC_ADDR_CHECKSUM 0x3f
#define RTC_ADDR_BOOTOPTS 0x90
#define RTC_ADDR_REBOOTCNT 0x91
#define RTC_ADDR_YEAR 0xc0
#define RTC_ADDR_CENT 0xc1
#ifdef _KERNEL
int cmos_read __P((int));
int cmos_write __P((int, int));
#endif /* _KERNEL */
/* End of rtc.h */
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