Lines Matching +full:power +full:- +full:stable +full:- +full:time

21  *	Added defines for hybrid phase/frequency-lock loop.
25  *	defines for PPS phase-lock loop.
39  * This header file defines the Network Time Protocol (NTP) interfaces
45  *	ntp_gettime - NTP user application interface
56  *	ntp_adjtime - NTP daemon application interface
76  * phase-lock loop (PLL) model used in the kernel implementation. These
83  * kernel. SHIFT_HZ expresses the same value as the nearest power of two
91  * MAXTC establishes the maximum time constant of the PLL. With the
92  * SHIFT_KG and SHIFT_KF values given and a time constant range from
100 #define MAXTC 6			/* maximum time constant (shift) */
105  * possible without overflow of a 32-bit word.
108  * which serves as a an extension to the low-order bits of the system
109  * clock variable time.tv_usec.
112  * which represents the current time offset with respect to standard
113  * time.
122 #define SHIFT_UPDATE (SHIFT_KG + MAXTC) /* time offset scale (shift) */
132  * tolerance, but otherwise the PLL continues to operate in a stable
137  * time offset allowed before the system time is reset, rather than
146  * PPS discipline code is configured (PPS_SYNC), the oscillator time and
148  * negligible time and frequency error relative to UTC, and MAXFREQ can
169  * The following defines are used only if a pulse-per-second (PPS)
172  * asynch driver. They establish the design parameters of the frequency-
177  * the time and frequency dispersion.
180  * calibration intervals, respectively, in seconds as a power of two.
185  * MAXGLITCH is the maximum interval before a time offset of more than
201 #define MOD_OFFSET	0x0001	/* set time offset */
203 #define MOD_MAXERROR	0x0004	/* set maximum time error */
204 #define MOD_ESTERROR	0x0008	/* set estimated time error */
206 #define MOD_TIMECONST	0x0020	/* set pll time constant */
215 #define STA_PPSTIME	0x0004	/* enable PPS time discipline (rw) */
216 #define STA_FLL		0x0008	/* select frequency-lock mode (rw) */
231     STA_PPSERROR | STA_CLOCKERR) /* read-only bits */
244  * NTP user interface (ntp_gettime()) - used to read kernel clock values
250 	struct timeval time;	/* current time (ro) */  member
256  * NTP daemon interface - (ntp_adjtime()) used to discipline CPU clock
261 	long offset;		/* time offset (us) (rw) */
266 	long constant;		/* pll time constant (rw) */
271 	 * The following read-only structure members are implemented