diff options
| author | Rajkumar Manoharan <rmanoharan@atheros.com> | 2011-04-06 21:42:52 +0530 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2011-04-12 16:57:35 -0400 |
| commit | d88525e8fdc00c0078d38353caffc29e5a9c70cc (patch) | |
| tree | cfc4a387ff3bd4bfc8879b703d6dabf0aa7d3893 /drivers/net/wireless/ath/ath9k/eeprom.h | |
| parent | 15b91e830dbf300d653b3fe70f6ef71b568164a3 (diff) | |
| download | op-kernel-dev-d88525e8fdc00c0078d38353caffc29e5a9c70cc.zip op-kernel-dev-d88525e8fdc00c0078d38353caffc29e5a9c70cc.tar.gz | |
ath9k_hw: Fix instable target power control b/w CCK/OFDM
The problem is that when the attenuation is increased,
the rate will start to drop from MCS7 -> MCS6, and finally
will see MCS1 -> CCK_11Mbps. When the rate is changed b/w
CCK and OFDM, it will use register desired_scale to calculate
how much tx gain need to change.
The output power with the same tx gain for CCK and OFDM modulated
signals are different. This difference is constant for AR9280
but not AR9285/AR9271. It has different PA architecture
a constant. So it should be calibrated against this PA
characteristic.
The driver has to read the calibrated values from EEPROM and set
the tx power registers accordingly.
Signed-off-by: Rajkumar Manoharan <rmanoharan@atheros.com>
Acked-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/ath/ath9k/eeprom.h')
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/eeprom.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/net/wireless/ath/ath9k/eeprom.h b/drivers/net/wireless/ath/ath9k/eeprom.h index bd82447..3e31613 100644 --- a/drivers/net/wireless/ath/ath9k/eeprom.h +++ b/drivers/net/wireless/ath/ath9k/eeprom.h @@ -436,7 +436,11 @@ struct modal_eep_4k_header { u8 db2_2:4, db2_3:4; u8 db2_4:4, reserved:4; #endif - u8 futureModal[4]; + u8 tx_diversity; + u8 flc_pwr_thresh; + u8 bb_scale_smrt_antenna; +#define EEP_4K_BB_DESIRED_SCALE_MASK 0x1f + u8 futureModal[1]; struct spur_chan spurChans[AR_EEPROM_MODAL_SPURS]; } __packed; |
