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. V2: Copied cover letter feature description to patch 3 in the series. Wojciech Dubowik (4): ath9k: Alternative EEPROM size for AR9003 ath9k: Read noise floor calibration data from eeprom ath9k: Use calibrated noise floor value when available ath9k: Display calibration data piers in debugfs drivers/net/wireless/ath/ath9k/ar9003_eeprom.c | 133 +++++++++++++++++++++++-- drivers/net/wireless/ath/ath9k/ar9003_eeprom.h | 10 ++ drivers/net/wireless/ath/ath9k/calib.c | 38 ++++--- drivers/net/wireless/ath/ath9k/hw.h | 2 + 4 files changed, 160 insertions(+), 23 deletions(-) -- 2.7.4
