8afeddf0a8
paper. It will be updated along with the draft and possible subsequent standard. The ppbus based pps driver is updated to implement this API.
87 lines
2.2 KiB
C
87 lines
2.2 KiB
C
/*
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* ----------------------------------------------------------------------------
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* "THE BEER-WARE LICENSE" (Revision 42):
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* <phk@FreeBSD.org> wrote this file. As long as you retain this notice you
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* can do whatever you want with this stuff. If we meet some day, and you think
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* this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp
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* ----------------------------------------------------------------------------
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*
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* $Id$
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*
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* The is a FreeBSD protype version of the "draft-mogul-pps-api-02.txt"
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* specification for Pulse Per Second timing interfaces.
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*
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*/
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#ifndef _TIME_PPS_H_
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#define _TIME_PPS_H_
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#include <sys/timepps.h>
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int time_pps_create(int filedes, pps_handle_t *handle);
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int time_pps_destroy(pps_handle_t handle);
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int time_pps_setparams(pps_handle_t handle, const pps_params_t *ppsparams);
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int time_pps_getparams(pps_handle_t handle, pps_params_t *ppsparams);
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int time_pps_getcap(pps_handle_t handle, int *mode);
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int time_pps_fetch(pps_handle_t handle, pps_info_t *ppsinfobuf);
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int time_pps_wait(pps_handle_t handle, const struct timespec *timeout,
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pps_info_t *ppsinfobuf);
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__inline int
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time_pps_create(int filedes, pps_handle_t *handle)
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{
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int error;
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*handle = -1;
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error = ioctl(filedes, PPS_IOC_CREATE, 0);
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if (error < 0)
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return (-1);
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*handle = filedes;
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return (0);
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}
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__inline int
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time_pps_destroy(pps_handle_t handle)
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{
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return (ioctl(handle, PPS_IOC_DESTROY, 0));
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}
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__inline int
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time_pps_setparams(pps_handle_t handle, const pps_params_t *ppsparams)
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{
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return (ioctl(handle, PPS_IOC_SETPARAMS, ppsparams));
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}
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__inline int
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time_pps_getparams(pps_handle_t handle, pps_params_t *ppsparams)
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{
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return (ioctl(handle, PPS_IOC_GETPARAMS, ppsparams));
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}
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__inline int
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time_pps_getcap(pps_handle_t handle, int *mode)
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{
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return (ioctl(handle, PPS_IOC_GETCAP, mode));
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}
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__inline int
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time_pps_fetch(pps_handle_t handle, pps_info_t *ppsinfobuf)
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{
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return (ioctl(handle, PPS_IOC_FETCH, ppsinfobuf));
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}
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__inline int
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time_pps_wait(pps_handle_t handle, const struct timespec *timeout,
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pps_info_t *ppsinfobuf)
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{
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int error;
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struct pps_wait_args arg;
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arg.timeout = *timeout;
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error = ioctl(handle, PPS_IOC_WAIT, &arg);
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*ppsinfobuf = arg.pps_info_buf;
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return (error);
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}
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#endif /* !_TIME_PPS_H_ */
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