84 lines
2.7 KiB
C
84 lines
2.7 KiB
C
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/* $NetBSD: rtc.h,v 1.2 2009/03/14 14:45:55 dsl Exp $ */
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/*
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* Copyright (c) 1994 Mark Brinicombe.
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* Copyright (c) 1994 Brini.
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* All rights reserved.
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*
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* This code is derived from software written for Brini by Mark Brinicombe
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Brini.
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* 4. The name of the company nor the name of the author may be used to
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* endorse or promote products derived from this software without specific
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* prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY BRINI ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL BRINI OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* RiscBSD kernel project
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*
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* rtc.h
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*
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* Header file for RTC / CMOS stuff
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*
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* Created : 13/10/94
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* Updated : 15/07/2000
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*
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* Based of kate/display/iiccontrol.c
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*/
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/*
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* IIC addresses for RTC chip
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* Two PCF8583 chips are supported on the IIC bus
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*/
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#define IIC_PCF8583_MASK 0xfc
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#define IIC_PCF8583_ADDR 0xa0
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#define RTC_Write (IIC_PCF8583_ADDR | IIC_WRITE)
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#define RTC_Read (IIC_PCF8583_ADDR | IIC_READ)
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typedef struct {
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u_char rtc_micro;
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u_char rtc_centi;
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u_char rtc_sec;
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u_char rtc_min;
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u_char rtc_hour;
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u_char rtc_day;
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u_char rtc_mon;
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u_char rtc_year;
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u_char rtc_cen;
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} rtc_t;
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#define RTC_ADDR_CHECKSUM 0x3f
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#define RTC_ADDR_BOOTOPTS 0x90
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#define RTC_ADDR_REBOOTCNT 0x91
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#define RTC_ADDR_YEAR 0xc0
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#define RTC_ADDR_CENT 0xc1
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#ifdef _KERNEL
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int cmos_read(int);
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int cmos_write(int, int);
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#endif /* _KERNEL */
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/* End of rtc.h */
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