/*      $NetBSD: rtc.h,v 1.10 2012/11/14 13:36:02 rkujawa Exp $ */

/*
* Copyright (c) 1994 Christian E. Hopps
* All rights reserved.
*
* 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 Christian E. Hopps.
* 4. The name of the author may not be used to endorse or promote products
*    derived from this software without specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 THE AUTHOR 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.
*
* information on A3000 clock from Holger Emden.
*/
#ifndef _RTCVAR_H_
#define _RTCVAR_H_

/* this is a hook set by a clock driver for the configured realtime clock,
  returning plain current unix-time */

extern int (*ugettod)(struct timeval *);
extern int (*usettod)(struct timeval *);

struct rtclock3000 {
       u_int  :28, second2:4;  /* 0x03  lower digit */
       u_int  :28, second1:4;  /* 0x07  upper digit */
       u_int  :28, minute2:4;  /* 0x0b  lower digit */
       u_int  :28, minute1:4;  /* 0x0f  upper digit */
       u_int  :28, hour2:4;    /* 0x13  lower digit */
       u_int  :28, hour1:4;    /* 0x17  upper digit */
       u_int  :28, weekday:4;  /* 0x1b */
       u_int  :28, day2:4;     /* 0x1f  lower digit */
       u_int  :28, day1:4;     /* 0x23  upper digit */
       u_int  :28, month2:4;   /* 0x27  lower digit */
       u_int  :28, month1:4;   /* 0x2b  upper digit */
       u_int  :28, year2:4;    /* 0x2f  lower digit */
       u_int  :28, year1:4;    /* 0x33  upper digit */
       u_int  :28, control1:4; /* 0x37  control-byte 1 */
       u_int  :28, control2:4; /* 0x3b  control-byte 2 */
       u_int  :28, control3:4; /* 0x3f  control-byte 3 */
};

#define A3CONTROL1_HOLD_CLOCK   0
#define A3CONTROL1_FREE_CLOCK   9

/* mode1 registers used by us */
#define leapyear year2

#define A3BBC_SET_REG   0xe0
#define A3BBC_WRITE_REG 0xc2
#define A3BBC_READ_REG  0xc3
#define A3NUM_BBC_REGS  12

/*
* Our clock starts at 1/1/1970, but counts the years from 1900.
*/
#define STARTOFTIME     1970
#define CLOCK_BASE_YEAR 1900

#endif /* _RTCVAR_H_ */