d6fdae5f1d
The system drivers may implement their own slewing which the generic driver can use to slew faster than the maximum frequency the driver is allowed to set directly.
50 lines
2.1 KiB
C
50 lines
2.1 KiB
C
/*
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chronyd/chronyc - Programs for keeping computer clocks accurate.
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**********************************************************************
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* Copyright (C) Miroslav Lichvar 2015
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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**********************************************************************
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=======================================================================
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Header file for a driver based on the adjtimex()/ntp_adjtime() function
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*/
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#ifndef GOT_SYS_TIMEX_H
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#define GOT_SYS_TIMEX_H
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#include <sys/timex.h>
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#include "localp.h"
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extern void SYS_Timex_Initialise(void);
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/* Initialise with some driver functions replaced with special versions */
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extern void SYS_Timex_InitialiseWithFunctions(double max_set_freq_ppm, double max_set_freq_delay,
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lcl_ReadFrequencyDriver sys_read_freq,
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lcl_SetFrequencyDriver sys_set_freq,
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lcl_ApplyStepOffsetDriver sys_apply_step_offset,
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double min_fastslew_offset, double max_fastslew_rate,
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lcl_AccrueOffsetDriver sys_accrue_offset,
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lcl_OffsetCorrectionDriver sys_get_offset_correction);
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extern void SYS_Timex_Finalise(void);
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/* Wrapper for adjtimex()/ntp_adjtime() */
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extern int SYS_Timex_Adjust(struct timex *txc, int ignore_error);
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#endif /* GOT_SYS_GENERIC_H */
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