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rtc.h revision 1.1 
      1 /*	$NetBSD: rtc.h,v 1.1 2001/02/23 03:48:18 ichiro Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1994 Mark Brinicombe.
      5  * Copyright (c) 1994 Brini.
      6  * All rights reserved.
      7  *
      8  * This code is derived from software written for Brini by Mark Brinicombe
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  * 3. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *	This product includes software developed by Brini.
     21  * 4. The name of the company nor the name of the author may be used to
     22  *    endorse or promote products derived from this software without specific
     23  *    prior written permission.
     24  *
     25  * THIS SOFTWARE IS PROVIDED BY BRINI ``AS IS'' AND ANY EXPRESS OR IMPLIED
     26  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
     27  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     28  * IN NO EVENT SHALL BRINI OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
     29  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     30  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
     31  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     32  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     33  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     34  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     35  * SUCH DAMAGE.
     36  *
     37  * RiscBSD kernel project
     38  *
     39  * rtc.h
     40  *
     41  * Header file for RTC / CMOS stuff
     42  *
     43  * Created      : 13/10/94
     44  * Updated	: 15/07/2000
     45  *
     46  * Based of kate/display/iiccontrol.c
     47  */
     48 
     49 /*
     50  * IIC addresses for RTC chip
     51  * Two PCF8583 chips are supported on the IIC bus
     52  */
     53 
     54 #define IIC_PCF8583_MASK 0xfc
     55 #define IIC_PCF8583_ADDR 0xa0
     56 
     57 #define RTC_Write (IIC_PCF8583_ADDR | IIC_WRITE)
     58 #define RTC_Read  (IIC_PCF8583_ADDR | IIC_READ)
     59 
     60 typedef struct {
     61 	u_char rtc_micro;
     62 	u_char rtc_centi;
     63 	u_char rtc_sec;
     64 	u_char rtc_min;
     65 	u_char rtc_hour;
     66 	u_char rtc_day;
     67 	u_char rtc_mon;
     68 	u_char rtc_year;
     69 	u_char rtc_cen;
     70 } rtc_t;
     71 
     72 #define RTC_ADDR_CHECKSUM	0x3f
     73 #define RTC_ADDR_BOOTOPTS	0x90
     74 #define RTC_ADDR_REBOOTCNT	0x91
     75 #define RTC_ADDR_YEAR     	0xc0
     76 #define RTC_ADDR_CENT     	0xc1
     77 
     78 #ifdef _KERNEL
     79 int cmos_read __P((int));
     80 int cmos_write __P((int, int));
     81 #endif /* _KERNEL */
     82 
     83 /* End of rtc.h */
     84