110 lines
4.1 KiB
C
110 lines
4.1 KiB
C
/* $NetBSD: clock_subr.h,v 1.11 2005/02/04 02:10:35 perry Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 1996 The NetBSD Foundation, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to The NetBSD Foundation
|
|
* by Gordon W. Ross
|
|
*
|
|
* 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 the NetBSD
|
|
* Foundation, Inc. and its contributors.
|
|
* 4. Neither the name of The NetBSD Foundation 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 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.
|
|
*/
|
|
|
|
#ifndef _DEV_CLOCK_SUBR_H_
|
|
#define _DEV_CLOCK_SUBR_H_
|
|
|
|
/*
|
|
* "POSIX time" to/from "YY/MM/DD/hh/mm/ss"
|
|
*/
|
|
struct clock_ymdhms {
|
|
u_short dt_year;
|
|
u_char dt_mon;
|
|
u_char dt_day;
|
|
u_char dt_wday; /* Day of week */
|
|
u_char dt_hour;
|
|
u_char dt_min;
|
|
u_char dt_sec;
|
|
};
|
|
|
|
time_t clock_ymdhms_to_secs(struct clock_ymdhms *);
|
|
void clock_secs_to_ymdhms(time_t, struct clock_ymdhms *);
|
|
|
|
/*
|
|
* BCD to decimal and decimal to BCD.
|
|
*/
|
|
#define FROMBCD(x) (((x) >> 4) * 10 + ((x) & 0xf))
|
|
#define TOBCD(x) (((x) / 10 * 16) + ((x) % 10))
|
|
|
|
/* Some handy constants. */
|
|
#define SECDAY (24 * 60 * 60)
|
|
#define SECYR (SECDAY * 365)
|
|
|
|
/* Traditional POSIX base year */
|
|
#define POSIX_BASE_YEAR 1970
|
|
|
|
/*
|
|
* Interface to time-of-day clock devices.
|
|
*
|
|
* todr_gettime: convert time-of-day clock into a `struct timeval'
|
|
* todr_settime: set time-of-day clock from a `struct timeval'
|
|
* todr_getcal: get current TOD clock calibration value in ppm
|
|
* todr_setcal: set calibration value in ppm in TOD clock
|
|
*
|
|
* (this is probably not so useful:)
|
|
* todr_setwen: provide a machine-dependent TOD clock write-enable callback
|
|
* function which takes one boolean argument:
|
|
* 1 to enable writes; 0 to disable writes.
|
|
*/
|
|
struct todr_chip_handle {
|
|
void *cookie; /* Device specific data */
|
|
void *bus_cookie; /* Bus specific data */
|
|
|
|
int (*todr_gettime)(struct todr_chip_handle *, struct timeval *);
|
|
int (*todr_settime)(struct todr_chip_handle *, struct timeval *);
|
|
int (*todr_getcal)(struct todr_chip_handle *, int *);
|
|
int (*todr_setcal)(struct todr_chip_handle *, int);
|
|
int (*todr_setwen)(struct todr_chip_handle *, int);
|
|
};
|
|
typedef struct todr_chip_handle *todr_chip_handle_t;
|
|
|
|
#define todr_gettime(ct, t) ((*(ct)->todr_gettime)(ct, t))
|
|
#define todr_settime(ct, t) ((*(ct)->todr_settime)(ct, t))
|
|
#define todr_getcal(ct, vp) ((*(ct)->todr_gettime)(ct, vp))
|
|
#define todr_setcal(ct, v) ((*(ct)->todr_settime)(ct, v))
|
|
#define todr_wenable(ct, v) if ((ct)->todr_setwen) \
|
|
((*(ct)->todr_setwen)(ct, v))
|
|
|
|
/*
|
|
* Machine-dependent function that machine-independent RTC drivers can
|
|
* use to register their todr_chip_handle_t with inittodr()/resettodr().
|
|
*/
|
|
void todr_attach(todr_chip_handle_t);
|
|
|
|
#endif /* _DEV_CLOCK_SUBR_H_ */
|