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| author | Sergey Ryazanov <ryazanov.s.a@gmail.com> | 2020-04-24 02:49:21 +0200 |
|---|---|---|
| committer | Kalle Valo <kvalo@codeaurora.org> | 2020-04-28 11:07:16 +0200 |
| commit | 2bb7027b64b68bf8620b849d6ec1c223572c7e92 (patch) | |
| tree | c653c41dd65218850b42cbfff9ab85d91e778aad | |
| parent | ath9k: do not miss longcal on AR9002 (diff) | |
| download | linux-2bb7027b64b68bf8620b849d6ec1c223572c7e92.tar.xz linux-2bb7027b64b68bf8620b849d6ec1c223572c7e92.zip | |
ath9k: interleaved NF calibration on AR9002
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@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200424004923.17129-5-ryazanov.s.a@gmail.com
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/ar9002_calib.c | 8 |
1 files 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; } |