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authorLuis R. Rodriguez <lrodriguez@atheros.com>2011-05-04 14:01:26 -0700
committerJohn W. Linville <linville@tuxdriver.com>2011-05-05 14:59:22 -0400
commitcf3a03b9c99a0b2715741d116f50f513f545bb2d (patch)
tree6481a1e8cd920d70a3e8a4952975878eb7789164
parent4268d8ed64ed918384954924284ba396cdb0e388 (diff)
ath9k_hw: fix power for the HT40 duplicate frames
With AR9003 at about ~ 10 feet from an AP that uses RTS / CTS you will be able to associate but not not get data through given that the power for the rates used was set too low. This increases the power and permits data connectivity at longer distances from access points when connected with HT40. Without this you will not get any data through when associated to APs configured in HT40 at about more than 10 feet away. Cc: stable@kernel.org Cc: Fiona Cain <fcain@atheros.com> Cc: Zhen Xie <Zhen.Xie@Atheros.com> Cc: Kathy Giori <kathy.giori@atheros.com> Cc: Neha Choksi <neha.choksi@atheros.com> Cc: Wayne Daniel <wayne.daniel@atheros.com> Cc: Gaurav Jauhar <gaurav.jauhar@atheros.com> Cc: Samira Naraghi <samira.naraghi@atheros.com> CC: Ashok Chennupati <ashok.chennupati@atheros.com> Cc: Lance Zimmerman <lance.zimmerman@atheros.com> Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
-rw-r--r--drivers/net/wireless/ath/ath9k/ar9003_eeprom.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c b/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c
index 97f970c5e4ec..a9dd3a4b4af5 100644
--- a/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c
+++ b/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c
@@ -4005,6 +4005,16 @@ static int ar9003_hw_tx_power_regwrite(struct ath_hw *ah, u8 * pPwrArray)
POW_SM(pPwrArray[ALL_TARGET_LEGACY_1L_5L], 0)
);
+ /* Write the power for duplicated frames - HT40 */
+
+ /* dup40_cck (LSB), dup40_ofdm, ext20_cck, ext20_ofdm (MSB) */
+ REG_WRITE(ah, 0xa3e0,
+ POW_SM(pPwrArray[ALL_TARGET_LEGACY_6_24], 24) |
+ POW_SM(pPwrArray[ALL_TARGET_LEGACY_1L_5L], 16) |
+ POW_SM(pPwrArray[ALL_TARGET_LEGACY_6_24], 8) |
+ POW_SM(pPwrArray[ALL_TARGET_LEGACY_1L_5L], 0)
+ );
+
/* Write the HT20 power per rate set */
/* 0/8/16 (LSB), 1-3/9-11/17-19, 4, 5 (MSB) */