uapi/linux/timex.h

28  *	Added defines for hybrid phase/frequency-lock loop.
32  *	defines for PPS phase-lock loop.
35  *	Revised status codes and structures for external clock and PPS
46  * 1995-08-13    Torsten Duwe
47  *      kernel PLL updated to 1994-12-13 specs (rfc-1589)
48  * 1997-08-30    Ulrich Windl
50  * 2004-08-12    Christoph Lameter
62  * syscall interface - used (mainly by NTP daemon)
63  * to discipline kernel clock oscillator
71 	int status;		/* clock command/status */
73 	__kernel_long_t precision;/* clock precision (usec) (read only) */
74 	__kernel_long_t tolerance;/* clock frequency tolerance (ppm)
78 	__kernel_long_t tick;	/* (modified) usecs between clock ticks */
82 	int shift;              /* interval duration (s) (shift) (ro) */
109 	int status;		/* clock command/status */
112 	long long precision;/* clock precision (usec) (read only) */
113 	long long tolerance;/* clock frequency tolerance (ppm)
117 	long long tick;	/* (modified) usecs between clock ticks */
121 	int shift;              /* interval duration (s) (shift) (ro) */
143 #define ADJ_STATUS		0x0010	/* clock status */
152 #define ADJ_OFFSET_SINGLESHOT	0x8001	/* old-fashioned adjtime */
153 #define ADJ_OFFSET_SS_READ	0xa001	/* read-only adjtime */
174 #define STA_FLL		0x0008	/* select frequency-lock mode (rw) */
178 #define STA_UNSYNC	0x0040	/* clock unsynchronized (rw) */
186 #define STA_CLOCKERR	0x1000	/* clock hardware fault (ro) */
187 #define STA_NANO	0x2000	/* resolution (0 = us, 1 = ns) (ro) */
189 #define STA_CLK		0x8000	/* clock source (0 = A, 1 = B) (ro) */
191 /* read-only bits */
196  * Clock states (time_state)
198 #define TIME_OK		0	/* clock synchronized, no leap second */
203 #define TIME_ERROR	5	/* clock not synchronized */