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authorLuis R. Rodriguez <lrodriguez@atheros.com>2010-04-26 15:04:32 -0400
committerJohn W. Linville <linville@tuxdriver.com>2010-04-27 16:09:17 -0400
commitb360a884834a83ede845733cf344a29eb10dd2e3 (patch)
tree08165aaef3aa9e2ff636dd72fb5a40c73c6facae
parent83937227657545f9e7aa9bfcb4429e81c9135f46 (diff)
downloadlinux-b360a884834a83ede845733cf344a29eb10dd2e3.tar.gz
ath9k_hw: disable TX IQ calibration for AR9003
Disable TX IQ calibration, it was prematurely enabled in
previous versions.

Cc: Paul Shaw <Paul.Shaw@Atheros.com>
Cc: Thomas Hammel <Thomas.Hammel@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_calib.c3
-rw-r--r--drivers/net/wireless/ath/ath9k/hw.c6
-rw-r--r--drivers/net/wireless/ath/ath9k/hw.h1
3 files changed, 9 insertions, 1 deletions
diff --git a/drivers/net/wireless/ath/ath9k/ar9003_calib.c b/drivers/net/wireless/ath/ath9k/ar9003_calib.c
index 5e20b4860c7f..5fcafb460877 100644
--- a/drivers/net/wireless/ath/ath9k/ar9003_calib.c
+++ b/drivers/net/wireless/ath/ath9k/ar9003_calib.c
@@ -755,7 +755,8 @@ static bool ar9003_hw_init_cal(struct ath_hw *ah,
 	}
 
 	/* Do Tx IQ Calibration */
-	ar9003_hw_tx_iq_cal(ah);
+	if (ah->config.tx_iq_calibration)
+		ar9003_hw_tx_iq_cal(ah);
 
 	/* Revert chainmasks to their original values before NF cal */
 	ar9003_hw_set_chain_masks(ah, ah->rxchainmask, ah->txchainmask);
diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c
index b6d12e52d30e..40b6e8415946 100644
--- a/drivers/net/wireless/ath/ath9k/hw.c
+++ b/drivers/net/wireless/ath/ath9k/hw.c
@@ -386,6 +386,12 @@ static void ath9k_hw_init_config(struct ath_hw *ah)
 	ah->config.rx_intr_mitigation = true;
 
 	/*
+	 * Tx IQ Calibration (ah->config.tx_iq_calibration) is only
+	 * used by AR9003, but it is showing reliability issues.
+	 * It will take a while to fix so this is currently disabled.
+	 */
+
+	/*
 	 * We need this for PCI devices only (Cardbus, PCI, miniPCI)
 	 * _and_ if on non-uniprocessor systems (Multiprocessor/HT).
 	 * This means we use it for all AR5416 devices, and the few
diff --git a/drivers/net/wireless/ath/ath9k/hw.h b/drivers/net/wireless/ath/ath9k/hw.h
index a78e09bab431..6c84d318e31b 100644
--- a/drivers/net/wireless/ath/ath9k/hw.h
+++ b/drivers/net/wireless/ath/ath9k/hw.h
@@ -261,6 +261,7 @@ struct ath9k_ops_config {
 #define AR_BASE_FREQ_5GHZ   	4900
 #define AR_SPUR_FEEQ_BOUND_HT40 19
 #define AR_SPUR_FEEQ_BOUND_HT20 10
+	bool tx_iq_calibration; /* Only available for >= AR9003 */
 	int spurmode;
 	u16 spurchans[AR_EEPROM_MODAL_SPURS][2];
 	u8 max_txtrig_level;