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- /* $OpenBSD: clock_subr.h,v 1.5 2008/06/26 05:42:14 ray Exp $ */
- /* $NetBSD: clock_subr.h,v 1.2 1997/03/15 18:11:17 is 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.
- *
- * 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.
- */
- /*
- * 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))
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