@@ -147,6 +147,7 @@ static int ptp_clock_adjtime(struct posix_clock *pc, struct timex *tx)
} else if (tx->modes & ADJ_FREQUENCY) {
err = ops->adjfreq(ops, scaled_ppm_to_ppb(tx->freq));
+ ptp->dialed_frequency = tx->freq;
}
return err;
@@ -45,6 +45,7 @@ struct ptp_clock {
dev_t devid;
int index; /* index into clocks.map */
struct pps_device *pps_source;
+ long dialed_frequency; /* remembers the frequency adjustment */
struct timestamp_event_queue tsevq; /* simple fifo for time stamps */
struct mutex tsevq_mux; /* one process at a time reading the fifo */
wait_queue_head_t tsev_wq;
This patch adds a field to the representation of a PTP hardware clock in order to remember the frequency adjustment value dialed by the user. Adding this field will let us answer queries in the manner of adjtimex in a follow on patch. Signed-off-by: Richard Cochran <richardcochran@gmail.com> --- drivers/ptp/ptp_clock.c | 1 + drivers/ptp/ptp_private.h | 1 + 2 files changed, 2 insertions(+), 0 deletions(-)