ath9k: Fix bugs in handling TX power
* Get power table offset from the EEPROM instead of using
a hardcoded value of -5 if the EEPROM rev is >= 21.
* Add support in the 4k eeprom code for tx power offset
in case we have a 4k AR9280 implementation.
* Fix tx power accuracy at high powers.
Signed-off-by: Senthil Balasubramanian <senthilkumar@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath/ath9k/eeprom_4k.c b/drivers/net/wireless/ath/ath9k/eeprom_4k.c
index 2a27b1d..58167d8 100644
--- a/drivers/net/wireless/ath/ath9k/eeprom_4k.c
+++ b/drivers/net/wireless/ath/ath9k/eeprom_4k.c
@@ -210,6 +210,8 @@
return pBase->rxMask;
case EEP_FRAC_N_5G:
return 0;
+ case EEP_PWR_TABLE_OFFSET:
+ return AR5416_PWR_TABLE_OFFSET_DB;
default:
return 0;
}
@@ -753,7 +755,7 @@
if (AR_SREV_9280_10_OR_LATER(ah)) {
for (i = 0; i < Ar5416RateSize; i++)
- ratesArray[i] -= AR5416_PWR_TABLE_OFFSET * 2;
+ ratesArray[i] -= AR5416_PWR_TABLE_OFFSET_DB * 2;
}
/* OFDM power per rate */