/*      $NetBSD: clockreg.h,v 1.3 2005/12/11 12:18:19 christos Exp $ */

/*
* Copyright (c) 1992, 1993
*      The Regents of the University of California.  All rights reserved.
*
* This software was developed by the Computer Systems Engineering group
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
* contributed to Berkeley.
*
* All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
*      This product includes software developed by the University of
*      California, Lawrence Berkeley Laboratory.
*
* 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. Neither the name of the University nor the names of its contributors
*    may be used to endorse or promote products derived from this software
*    without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS 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.
*
*      @(#)clockreg.h  8.1 (Berkeley) 6/11/93
*/

/*
* Mostek MK48T02 clock.
*/
struct clockreg {
       volatile u_char cl_csr;         /* control register */
       volatile u_char cl_sec;         /* seconds (0..59; BCD) */
       volatile u_char cl_min;         /* minutes (0..59; BCD) */
       volatile u_char cl_hour;        /* hour (0..23; BCD) */
       volatile u_char cl_wday;        /* weekday (1..7) */
       volatile u_char cl_mday;        /* day in month (1..31; BCD) */
       volatile u_char cl_month;       /* month (1..12; BCD) */
       volatile u_char cl_year;        /* year (0..99; BCD) */
};

/* bits in cl_csr */
#define CLK_WRITE       0x80            /* want to write */
#define CLK_READ        0x40            /* want to read (freeze clock) */

/*
* Sun chose the year `68' as their base count, so that
* cl_year==0 means 1968.
*/
#define YEAR0   68