linux-kernel - [058/272] ath9k_hw: Fix XPABIAS level configuration for AR9003

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Date:	Tue, 15 Feb 2011 16:11:55 -0800
From:	Greg KH <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org, stable@...nel.org
Cc:	stable-review@...nel.org, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	Vasanthakumar Thiagarajan <vasanth@...eros.com>,
	"John W. Linville" <linville@...driver.com>
Subject: [058/272] ath9k_hw: Fix XPABIAS level configuration for AR9003

2.6.37-stable review patch.  If anyone has any objections, please let us know.

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

From: Vasanthakumar Thiagarajan <vasanth@...eros.com>

commit 52a0e2477dac2106bc1688cbe9615cdafc9deb7d upstream.

Improper configuration of 0x16288 and 0x16290 would affect transmission.

Signed-off-by: Vasanthakumar Thiagarajan <vasanth@...eros.com>
Signed-off-by: John W. Linville <linville@...driver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>

---
 drivers/net/wireless/ath/ath9k/ar9003_eeprom.c |   14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

--- a/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c
+++ b/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c
@@ -22,12 +22,14 @@
 #define COMP_CKSUM_LEN 2
 
 #define AR_CH0_TOP (0x00016288)
-#define AR_CH0_TOP_XPABIASLVL (0x3)
+#define AR_CH0_TOP_XPABIASLVL (0x300)
 #define AR_CH0_TOP_XPABIASLVL_S (8)
 
 #define AR_CH0_THERM (0x00016290)
-#define AR_CH0_THERM_SPARE (0x3f)
-#define AR_CH0_THERM_SPARE_S (0)
+#define AR_CH0_THERM_XPABIASLVL_MSB 0x3
+#define AR_CH0_THERM_XPABIASLVL_MSB_S 0
+#define AR_CH0_THERM_XPASHORT2GND 0x4
+#define AR_CH0_THERM_XPASHORT2GND_S 2
 
 #define AR_SWITCH_TABLE_COM_ALL (0xffff)
 #define AR_SWITCH_TABLE_COM_ALL_S (0)
@@ -995,9 +997,9 @@ static s32 ar9003_hw_xpa_bias_level_get(
 static void ar9003_hw_xpa_bias_level_apply(struct ath_hw *ah, bool is2ghz)
 {
 	int bias = ar9003_hw_xpa_bias_level_get(ah, is2ghz);
-	REG_RMW_FIELD(ah, AR_CH0_TOP, AR_CH0_TOP_XPABIASLVL, (bias & 0x3));
-	REG_RMW_FIELD(ah, AR_CH0_THERM, AR_CH0_THERM_SPARE,
-		      ((bias >> 2) & 0x3));
+	REG_RMW_FIELD(ah, AR_CH0_TOP, AR_CH0_TOP_XPABIASLVL, bias);
+	REG_RMW_FIELD(ah, AR_CH0_THERM, AR_CH0_THERM_XPABIASLVL_MSB, bias >> 2);
+	REG_RMW_FIELD(ah, AR_CH0_THERM, AR_CH0_THERM_XPASHORT2GND, 1);
 }
 
 static u32 ar9003_hw_ant_ctrl_common_get(struct ath_hw *ah, bool is2ghz)


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