sys/arch/arm/include/arm32/rtc.h

   1 /*      $NetBSD: rtc.h,v 1.2 2009/03/14 14:45:55 dsl 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(int);
  80 int cmos_write(int, int);
  81 #endif /* _KERNEL */
  82
  83 /* End of rtc.h */