NF calibration and other elements of long calibration are usually faster
than ADCs & I/Q calibrations due to independence of receiption of the
OFDM signal. Moreover sometime I/Q calibration can not be completed at
all without preceding NF calibration. This is due to AGC, which has a
habit to block a weak signal without regular NF calibration. Thus, we do
not need to deferr the long calibration forever.
So, if the long calibration is requested, then deferr the ADCs & I/Q
calibration(s) and run the longcal (the NF calibration in particular) to
obtain fresh noise data.
Run tested with AR9220.
Signed-off-by: Sergey Ryazanov <ryazanov.s.a@xxxxxxxxx>
---
drivers/net/wireless/ath/ath9k/ar9002_calib.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/drivers/net/wireless/ath/ath9k/ar9002_calib.c b/drivers/net/wireless/ath/ath9k/ar9002_calib.c
index ad8db7720993..68188f500949 100644
--- a/drivers/net/wireless/ath/ath9k/ar9002_calib.c
+++ b/drivers/net/wireless/ath/ath9k/ar9002_calib.c
@@ -680,8 +680,12 @@ static int ar9002_hw_calibrate(struct ath_hw *ah, struct ath9k_channel *chan,
return 0;
ah->cal_list_curr = currCal = currCal->calNext;
- if (currCal->calState == CAL_WAITING)
- ath9k_hw_reset_calibration(ah, currCal);
+ percal_pending = currCal->calState == CAL_WAITING;
+ }
+
+ /* Do not start a next calibration if the longcal is in action */
+ if (percal_pending && !nfcal && !longcal) {
+ ath9k_hw_reset_calibration(ah, currCal);
return 0;
}
--
2.24.1
