diff options
Diffstat (limited to 'sys/dev/clock_subr.h')
| -rw-r--r-- | sys/dev/clock_subr.h | 37 |
1 files changed, 36 insertions, 1 deletions
diff --git a/sys/dev/clock_subr.h b/sys/dev/clock_subr.h index 0726cdaf52c..f65fc13fc4f 100644 --- a/sys/dev/clock_subr.h +++ b/sys/dev/clock_subr.h @@ -1,4 +1,4 @@ -/* $OpenBSD: clock_subr.h,v 1.1 1997/09/09 13:08:18 maja Exp $ */ +/* $OpenBSD: clock_subr.h,v 1.2 2001/08/19 05:34:05 art Exp $ */ /* $NetBSD: clock_subr.h,v 1.2 1997/03/15 18:11:17 is Exp $ */ /*- @@ -63,3 +63,38 @@ void clock_secs_to_ymdhms __P((time_t, struct clock_ymdhms *)); #define SECDAY 86400L #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)) + |