X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=include%2Flinux%2Ftimex.h;h=da929dbbea2a1c9ab246ee134bb83dcd9ec5c935;hb=0ab598099c18affd73a21482274c00e8119236be;hp=1cde6f6a27121a1cd363d9e26ba6aff08d14067e;hpb=3d3675cc3d04d7fd4bb11e8c1ea79e5ade4f5e44;p=linux-2.6-omap-h63xx.git

diff --git a/include/linux/timex.h b/include/linux/timex.h
index 1cde6f6a271..da929dbbea2 100644
--- a/include/linux/timex.h
+++ b/include/linux/timex.h
@@ -69,34 +69,28 @@
  * zero to MAXTC, the PLL will converge in 15 minutes to 16 hours,
  * respectively.
  */
-#define SHIFT_KG 6		/* phase factor (shift) */
-#define SHIFT_KF 16		/* PLL frequency factor (shift) */
-#define SHIFT_KH 2		/* FLL frequency factor (shift) */
-#define MAXTC 6			/* maximum time constant (shift) */
+#define SHIFT_PLL	4	/* PLL frequency factor (shift) */
+#define SHIFT_FLL	2	/* FLL frequency factor (shift) */
+#define MAXTC		10	/* maximum time constant (shift) */
 
 /*
- * The SHIFT_SCALE define establishes the decimal point of the time_phase
- * variable which serves as an extension to the low-order bits of the
- * system clock variable. The SHIFT_UPDATE define establishes the decimal
- * point of the time_offset variable which represents the current offset
- * with respect to standard time. The FINENSEC define represents 1 nsec in
- * scaled units.
+ * The SHIFT_UPDATE define establishes the decimal point of the
+ * time_offset variable which represents the current offset with
+ * respect to standard time.
  *
  * SHIFT_USEC defines the scaling (shift) of the time_freq and
  * time_tolerance variables, which represent the current frequency
  * offset and maximum frequency tolerance.
- *
- * FINENSEC is 1 ns in SHIFT_UPDATE units of the time_phase variable.
  */
-#define SHIFT_SCALE 22		/* phase scale (shift) */
 #define SHIFT_UPDATE (SHIFT_HZ + 1) /* time offset scale (shift) */
 #define SHIFT_USEC 16		/* frequency offset scale (shift) */
-#define FINENSEC (1L << (SHIFT_SCALE - 10)) /* ~1 ns in phase units */
+#define SHIFT_NSEC 12		/* kernel frequency offset scale */
 
 #define MAXPHASE 512000L        /* max phase error (us) */
 #define MAXFREQ (512L << SHIFT_USEC)  /* max frequency error (ppm) */
-#define MINSEC 16L              /* min interval between updates (s) */
-#define MAXSEC 1200L            /* max interval between updates (s) */
+#define MAXFREQ_NSEC (512000L << SHIFT_NSEC) /* max frequency error (ppb) */
+#define MINSEC 256		/* min interval between updates (s) */
+#define MAXSEC 2048		/* max interval between updates (s) */
 #define	NTP_PHASE_LIMIT	(MAXPHASE << 5)	/* beyond max. dispersion */
 
 /*
@@ -204,23 +198,15 @@ extern int tickadj;			/* amount of adjustment per tick */
 /*
  * phase-lock loop variables
  */
-extern int time_state;		/* clock status */
 extern int time_status;		/* clock synchronization status bits */
-extern long time_offset;	/* time adjustment (us) */
-extern long time_constant;	/* pll time constant */
-extern long time_tolerance;	/* frequency tolerance (ppm) */
-extern long time_precision;	/* clock precision (us) */
 extern long time_maxerror;	/* maximum error */
 extern long time_esterror;	/* estimated error */
 
 extern long time_freq;		/* frequency offset (scaled ppm) */
-extern long time_reftime;	/* time at last adjustment (s) */
 
 extern long time_adjust;	/* The amount of adjtime left */
-extern long time_next_adjust;	/* Value for time_adjust at next tick */
 
 extern void ntp_clear(void);
-extern void ntp_update_frequency(void);
 
 /**
  * ntp_synced - Returns 1 if the NTP status is not UNSYNC
@@ -269,10 +255,10 @@ struct time_interpolator {
 	u8 jitter;			/* if set compensate for fluctuations */
 	u32 nsec_per_cyc;		/* set by register_time_interpolator() */
 	void *addr;			/* address of counter or function */
-	u64 mask;			/* mask the valid bits of the counter */
+	cycles_t mask;			/* mask the valid bits of the counter */
 	unsigned long offset;		/* nsec offset at last update of interpolator */
 	u64 last_counter;		/* counter value in units of the counter at last update */
-	u64 last_cycle;			/* Last timer value if TIME_SOURCE_JITTER is set */
+	cycles_t last_cycle;		/* Last timer value if TIME_SOURCE_JITTER is set */
 	u64 frequency;			/* frequency in counts/second */
 	long drift;			/* drift in parts-per-million (or -1) */
 	unsigned long skips;		/* skips forward */
@@ -300,6 +286,13 @@ static inline void time_interpolator_update(long delta_nsec)
 
 #define TICK_LENGTH_SHIFT	32
 
+#ifdef CONFIG_NO_HZ
+#define NTP_INTERVAL_FREQ  (2)
+#else
+#define NTP_INTERVAL_FREQ  (HZ)
+#endif
+#define NTP_INTERVAL_LENGTH (NSEC_PER_SEC/NTP_INTERVAL_FREQ)
+
 /* Returns how long ticks are at present, in ns / 2^(SHIFT_SCALE-10). */
 extern u64 current_tick_length(void);
 
@@ -307,6 +300,9 @@ extern void second_overflow(void);
 extern void update_ntp_one_tick(void);
 extern int do_adjtimex(struct timex *);
 
+/* Don't use! Compatibility define for existing users. */
+#define tickadj	(500/HZ ? : 1)
+
 #endif /* KERNEL */
 
 #endif /* LINUX_TIMEX_H */