ptp: ptp_clock: Publish scaled_ppm_to_ppb
Publish scaled_ppm_to_ppb to allow drivers to use it. Signed-off-by: Shalom Toledo <shalomt@mellanox.com> Reviewed-by: Petr Machata <petrm@mellanox.com> Signed-off-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>alistair/sunxi64-5.4-dsi
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1078645af6
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4368dada5b
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@ -63,7 +63,7 @@ static void enqueue_external_timestamp(struct timestamp_event_queue *queue,
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spin_unlock_irqrestore(&queue->lock, flags);
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spin_unlock_irqrestore(&queue->lock, flags);
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}
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}
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static s32 scaled_ppm_to_ppb(long ppm)
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s32 scaled_ppm_to_ppb(long ppm)
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{
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{
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/*
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/*
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* The 'freq' field in the 'struct timex' is in parts per
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* The 'freq' field in the 'struct timex' is in parts per
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@ -82,6 +82,7 @@ static s32 scaled_ppm_to_ppb(long ppm)
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ppb >>= 13;
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ppb >>= 13;
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return (s32) ppb;
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return (s32) ppb;
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}
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}
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EXPORT_SYMBOL(scaled_ppm_to_ppb);
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/* posix clock implementation */
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/* posix clock implementation */
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@ -212,6 +212,14 @@ extern void ptp_clock_event(struct ptp_clock *ptp,
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extern int ptp_clock_index(struct ptp_clock *ptp);
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extern int ptp_clock_index(struct ptp_clock *ptp);
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/**
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* scaled_ppm_to_ppb() - convert scaled ppm to ppb
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*
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* @ppm: Parts per million, but with a 16 bit binary fractional field
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*/
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extern s32 scaled_ppm_to_ppb(long ppm);
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/**
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/**
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* ptp_find_pin() - obtain the pin index of a given auxiliary function
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* ptp_find_pin() - obtain the pin index of a given auxiliary function
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*
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*
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