ath9k: Use calibrated noise floor value when available
authorWojciech Dubowik <Wojciech.Dubowik@neratec.com>
Wed, 24 Jan 2018 08:02:18 +0000 (09:02 +0100)
committerKalle Valo <kvalo@codeaurora.org>
Thu, 25 Jan 2018 05:33:43 +0000 (07:33 +0200)
commit8da58553cc63f6e9afcab0db033c79e554334c13
tree194ddb074b5e6cf69edbc04e8ffd60f6bbb457ae
parent34d4fcd8813a990d0afb86893fdd64748adca6cb
ath9k: Use calibrated noise floor value when available

AR9003 series allows to calibrate noise floor for different frequency
bins. Once it's done it's possible to get more accurate rssi/signal
values over whole frequency band at a given temperature.
The RSSI/signal accuracy reported by calibrated RF cards improves
from 6 to up to 2dB.

This could be interesting for application which require good signal
accuracy like roaming or mesh protocols.

Signed-off-by: Wojciech Dubowik <Wojciech.Dubowik@neratec.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
drivers/net/wireless/ath/ath9k/calib.c