linux-kernel - [PATCH 3.4 041/134] ath9k_hw: Assign default xlna config for AR9485

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Message-Id: <20140410032305.305069073@linuxfoundation.org>
Date:	Wed,  9 Apr 2014 20:22:37 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org,
	Sujith Manoharan <c_manoha@....qualcomm.com>,
	"John W. Linville" <linville@...driver.com>,
	Ben Hutchings <ben@...adent.org.uk>,
	Jianguo Wu <wujianguo@...wei.com>
Subject: [PATCH 3.4 041/134] ath9k_hw: Assign default xlna config for AR9485

3.4-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Sujith Manoharan <c_manoha@....qualcomm.com>

commit 30d5b709da23f4ab9836c7f66d2d2e780a69cf12 upstream.

For AR9485 boards with XLNA, the default gpio config
is not set correctly, fix this.

Signed-off-by: Sujith Manoharan <c_manoha@....qualcomm.com>
Signed-off-by: John W. Linville <linville@...driver.com>
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
Cc: Jianguo Wu <wujianguo@...wei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/net/wireless/ath/ath9k/ar9003_eeprom.c |    8 ++++++--
 drivers/net/wireless/ath/ath9k/ar9003_phy.h    |    2 ++
 2 files changed, 8 insertions(+), 2 deletions(-)

--- a/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c
+++ b/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c
@@ -3592,7 +3592,7 @@ static u16 ar9003_hw_ant_ctrl_chain_get(
 static void ar9003_hw_ant_ctrl_apply(struct ath_hw *ah, bool is2ghz)
 {
 	int chain;
-	u32 regval;
+	u32 regval, value;
 	u32 ant_div_ctl1;
 	static const u32 switch_chain_reg[AR9300_MAX_CHAINS] = {
 			AR_PHY_SWITCH_CHAIN_0,
@@ -3600,7 +3600,11 @@ static void ar9003_hw_ant_ctrl_apply(str
 			AR_PHY_SWITCH_CHAIN_2,
 	};
 
-	u32 value = ar9003_hw_ant_ctrl_common_get(ah, is2ghz);
+	if (AR_SREV_9485(ah) && (ar9003_hw_get_rx_gain_idx(ah) == 0))
+		ath9k_hw_cfg_output(ah, AR9300_EXT_LNA_CTL_GPIO_AR9485,
+				    AR_GPIO_OUTPUT_MUX_AS_PCIE_ATTENTION_LED);
+
+	value = ar9003_hw_ant_ctrl_common_get(ah, is2ghz);
 
 	if (AR_SREV_9462(ah)) {
 		REG_RMW_FIELD(ah, AR_PHY_SWITCH_COM,
--- a/drivers/net/wireless/ath/ath9k/ar9003_phy.h
+++ b/drivers/net/wireless/ath/ath9k/ar9003_phy.h
@@ -339,6 +339,8 @@
 
 #define AR_PHY_CCA_NOM_VAL_9330_2GHZ          -118
 
+#define AR9300_EXT_LNA_CTL_GPIO_AR9485 9
+
 /*
  * AGC Field Definitions
  */


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