/* $NetBSD: timekeeper.h,v 1.4 2014/03/18 18:20:41 riastradh Exp $ */

/*-
 * Copyright (c) 2000 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Tohru Nishimura.
 *
 * 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.
 *
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
 */

/*
 * Mostek MK48T02 for LUNA-1
 */
#define	MK_CSR		0	/* control register */
#define	MK_SEC		1	/* seconds (0..59; BCD) */
#define	MK_MIN		2	/* minutes (0..59; BCD) */
#define	MK_HOUR		3	/* hour (0..23; BCD) */
#define	MK_DOW		4	/* weekday (1..7) */
#define	MK_DOM		5	/* day in month (1..31; BCD) */
#define	MK_MONTH	6	/* month (1..12; BCD) */
#define	MK_YEAR		7	/* year (0..99; BCD) */
/* bits in cl_csr */
#define MK_CSR_WRITE	0x80	/* want to write */
#define MK_CSR_READ	0x40	/* want to read (freeze clock) */

/*
 * Dallas Semiconductor DS1287 -- mc146818 compatible, for LUNA-2
 */
#define MC_SEC          0x0     /* Time of year: seconds (0-59) */
#define MC_ASEC         0x1     /* Alarm: seconds */
#define MC_MIN          0x2     /* Time of year: minutes (0-59) */
#define MC_AMIN         0x3     /* Alarm: minutes */
#define MC_HOUR         0x4     /* Time of year: hour (see above) */
#define MC_AHOUR        0x5     /* Alarm: hour */
#define MC_DOW          0x6     /* Time of year: day of week (1-7) */
#define MC_DOM          0x7     /* Time of year: day of month (1-31) */
#define MC_MONTH        0x8     /* Time of year: month (1-12) */
#define MC_YEAR         0x9     /* Time of year: year in century (0-99) */

#define MC_REGA         0xa     /* Control register A */
#define  MC_REGA_RSMASK 0x0f    /* Interrupt rate select mask (see below) */
#define  MC_REGA_DVMASK 0x70    /* Divisor select mask (see below) */
#define  MC_REGA_UIP    0x80    /* Update in progress; read only. */
#define  MC_BASE_32_KHz	0x20    /* 32 KHz crystal (enable OSC on DS1287) */

#define MC_REGB         0xb     /* Control register B */
#define  MC_REGB_DSE    0x01    /* Daylight Savings Enable */
#define  MC_REGB_24HR   0x02    /* 24-hour mode (AM/PM mode when clear) */
#define  MC_REGB_BINARY 0x04    /* Binary mode (BCD mode when clear) */
#define  MC_REGB_SQWE   0x08    /* Square Wave Enable */
#define  MC_REGB_UIE    0x10    /* Update End interrupt enable */
#define  MC_REGB_AIE    0x20    /* Alarm interrupt enable */
#define  MC_REGB_PIE    0x40    /* Periodic interrupt enable */
#define  MC_REGB_SET    0x80    /* Allow time to be set; stops updates */

#define MC_REGC         0xc     /* Control register C */
/*       MC_REGC_UNUSED 0x0f    UNUSED */
#define  MC_REGC_UF     0x10    /* Update End interrupt flag */
#define  MC_REGC_AF     0x20    /* Alarm interrupt flag */
#define  MC_REGC_PF     0x40    /* Periodic interrupt flag */
#define  MC_REGC_IRQF   0x80    /* Interrupt request pending flag */

#define MC_REGD         0xd     /* Control register D */
/*       MC_REGD_UNUSED 0x7f    UNUSED */
#define  MC_REGD_VRT    0x80    /* Valid RAM and Time bit */

#define MC_NREGS        0xe     /* 14 registers; CMOS follows */
#define MC_NTODREGS     0xa     /* 10 of those regs are for TOD and alarm */