From: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Date: Tue, 4 Jun 2013 10:11:33 +0000 (+0530)
Subject: ath9k: Fix ofdm weak signal configuration
X-Git-Tag: v3.11-rc1~64^2~78^2^2~156
X-Git-Url: http://git.cascardo.info/?p=cascardo%2Flinux.git;a=commitdiff_plain;h=ff23e0845b1ba33ec2ee25989758e2cf3df6d4c5

ath9k: Fix ofdm weak signal configuration

The commit, "ath9k_hw: improve ANI processing and rx desensitizing parameters"
removed code setting various phy registers holding threshold values.

This is likely required for OFDM weak signal detection to function
correctly, so add them, but skip AR9462 and AR9565.

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---

diff --git a/drivers/net/wireless/ath/ath9k/ar9003_phy.c b/drivers/net/wireless/ath/ath9k/ar9003_phy.c
index 83e03857c014..bc483128efcd 100644
--- a/drivers/net/wireless/ath/ath9k/ar9003_phy.c
+++ b/drivers/net/wireless/ath/ath9k/ar9003_phy.c
@@ -906,6 +906,11 @@ static bool ar9003_hw_ani_control(struct ath_hw *ah,
 	struct ath_common *common = ath9k_hw_common(ah);
 	struct ath9k_channel *chan = ah->curchan;
 	struct ar5416AniState *aniState = &ah->ani;
+	int m1ThreshLow, m2ThreshLow;
+	int m1Thresh, m2Thresh;
+	int m2CountThr, m2CountThrLow;
+	int m1ThreshLowExt, m2ThreshLowExt;
+	int m1ThreshExt, m2ThreshExt;
 	s32 value, value2;
 
 	switch (cmd & ah->ani_function) {
@@ -919,6 +924,61 @@ static bool ar9003_hw_ani_control(struct ath_hw *ah,
 		 */
 		u32 on = param ? 1 : 0;
 
+		if (AR_SREV_9462(ah) || AR_SREV_9565(ah))
+			goto skip_ws_det;
+
+		m1ThreshLow = on ?
+			aniState->iniDef.m1ThreshLow : m1ThreshLow_off;
+		m2ThreshLow = on ?
+			aniState->iniDef.m2ThreshLow : m2ThreshLow_off;
+		m1Thresh = on ?
+			aniState->iniDef.m1Thresh : m1Thresh_off;
+		m2Thresh = on ?
+			aniState->iniDef.m2Thresh : m2Thresh_off;
+		m2CountThr = on ?
+			aniState->iniDef.m2CountThr : m2CountThr_off;
+		m2CountThrLow = on ?
+			aniState->iniDef.m2CountThrLow : m2CountThrLow_off;
+		m1ThreshLowExt = on ?
+			aniState->iniDef.m1ThreshLowExt : m1ThreshLowExt_off;
+		m2ThreshLowExt = on ?
+			aniState->iniDef.m2ThreshLowExt : m2ThreshLowExt_off;
+		m1ThreshExt = on ?
+			aniState->iniDef.m1ThreshExt : m1ThreshExt_off;
+		m2ThreshExt = on ?
+			aniState->iniDef.m2ThreshExt : m2ThreshExt_off;
+
+		REG_RMW_FIELD(ah, AR_PHY_SFCORR_LOW,
+			      AR_PHY_SFCORR_LOW_M1_THRESH_LOW,
+			      m1ThreshLow);
+		REG_RMW_FIELD(ah, AR_PHY_SFCORR_LOW,
+			      AR_PHY_SFCORR_LOW_M2_THRESH_LOW,
+			      m2ThreshLow);
+		REG_RMW_FIELD(ah, AR_PHY_SFCORR,
+			      AR_PHY_SFCORR_M1_THRESH,
+			      m1Thresh);
+		REG_RMW_FIELD(ah, AR_PHY_SFCORR,
+			      AR_PHY_SFCORR_M2_THRESH,
+			      m2Thresh);
+		REG_RMW_FIELD(ah, AR_PHY_SFCORR,
+			      AR_PHY_SFCORR_M2COUNT_THR,
+			      m2CountThr);
+		REG_RMW_FIELD(ah, AR_PHY_SFCORR_LOW,
+			      AR_PHY_SFCORR_LOW_M2COUNT_THR_LOW,
+			      m2CountThrLow);
+		REG_RMW_FIELD(ah, AR_PHY_SFCORR_EXT,
+			      AR_PHY_SFCORR_EXT_M1_THRESH_LOW,
+			      m1ThreshLowExt);
+		REG_RMW_FIELD(ah, AR_PHY_SFCORR_EXT,
+			      AR_PHY_SFCORR_EXT_M2_THRESH_LOW,
+			      m2ThreshLowExt);
+		REG_RMW_FIELD(ah, AR_PHY_SFCORR_EXT,
+			      AR_PHY_SFCORR_EXT_M1_THRESH,
+			      m1ThreshExt);
+		REG_RMW_FIELD(ah, AR_PHY_SFCORR_EXT,
+			      AR_PHY_SFCORR_EXT_M2_THRESH,
+			      m2ThreshExt);
+skip_ws_det:
 		if (on)
 			REG_SET_BIT(ah, AR_PHY_SFCORR_LOW,
 				    AR_PHY_SFCORR_LOW_USE_SELF_CORR_LOW);