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Control offset correction rate in Linux driver

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The kernel currently doesn't support a linear adjustment with
programmable rate, extend the use of the kernel PLL with locked
frequency instead.

Set the PLL time constant according to the correction time corresponding
to the correction rate and corrected offset.

On kernels with nano PLL adjtime() is no longer used.
This commit is contained in:
Miroslav Lichvar
2011-09-13 14:53:46 +02:00
parent c7d0232bb1
commit 1b8deaf354
3 changed files with 67 additions and 13 deletions
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2
wrap_adjtimex.h
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@@ -73,7 +73,7 @@ int TMX_ReadCurrentParams(struct tmx_params *params);
int TMX_SetLeap(int leap);
int TMX_SetSync(int sync);
int TMX_EnableNanoPLL(void);
int TMX_ApplyPLLOffset(long offset);
int TMX_ApplyPLLOffset(long offset, long constant);
int TMX_GetPLLOffsetLeft(long *offset);
int TMX_TestStepOffset(void);
int TMX_ApplyStepOffset(double offset);