ath9k: add a fix for ANI related stability issues

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@41028 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 155 insertions, 0 deletions

diff --git a/package/kernel/mac80211/patches/562-ath9k_ani_ws_detect.patch b/package/kernel/mac80211/patches/562-ath9k_ani_ws_detect.patch
new file mode 100644
index 0000000000..1e4f451c7e
--- /dev/null
+++ b/package/kernel/mac80211/patches/562-ath9k_ani_ws_detect.patch
@@ -0,0 +1,155 @@
+--- a/drivers/net/wireless/ath/ath9k/ar5008_phy.c
++++ b/drivers/net/wireless/ath/ath9k/ar5008_phy.c
+@@ -929,55 +929,6 @@ static bool ar5008_hw_ani_control_new(st
+ 		 * on == 0 means more noise imm
+ 		 */
+ 		u32 on = param ? 1 : 0;
+-		/*
+-		 * make register setting for default
+-		 * (weak sig detect ON) come from INI file
+-		 */
+-		int m1ThreshLow = on ?
+-			aniState->iniDef.m1ThreshLow : m1ThreshLow_off;
+-		int m2ThreshLow = on ?
+-			aniState->iniDef.m2ThreshLow : m2ThreshLow_off;
+-		int m1Thresh = on ?
+-			aniState->iniDef.m1Thresh : m1Thresh_off;
+-		int m2Thresh = on ?
+-			aniState->iniDef.m2Thresh : m2Thresh_off;
+-		int m2CountThr = on ?
+-			aniState->iniDef.m2CountThr : m2CountThr_off;
+-		int m2CountThrLow = on ?
+-			aniState->iniDef.m2CountThrLow : m2CountThrLow_off;
+-		int m1ThreshLowExt = on ?
+-			aniState->iniDef.m1ThreshLowExt : m1ThreshLowExt_off;
+-		int m2ThreshLowExt = on ?
+-			aniState->iniDef.m2ThreshLowExt : m2ThreshLowExt_off;
+-		int m1ThreshExt = on ?
+-			aniState->iniDef.m1ThreshExt : m1ThreshExt_off;
+-		int 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);
+ 
+ 		if (on)
+ 			REG_SET_BIT(ah, AR_PHY_SFCORR_LOW,
+--- a/drivers/net/wireless/ath/ath9k/ar9003_phy.c
++++ b/drivers/net/wireless/ath/ath9k/ar9003_phy.c
+@@ -26,20 +26,6 @@ static const int cycpwrThr1_table[] =
+ /* level:  0   1   2   3   4   5   6   7   8  */
+ 	{ -6, -4, -2,  0,  2,  4,  6,  8 };     /* lvl 0-7, default 3 */
+ 
+-/*
+- * register values to turn OFDM weak signal detection OFF
+- */
+-static const int m1ThreshLow_off = 127;
+-static const int m2ThreshLow_off = 127;
+-static const int m1Thresh_off = 127;
+-static const int m2Thresh_off = 127;
+-static const int m2CountThr_off =  31;
+-static const int m2CountThrLow_off =  63;
+-static const int m1ThreshLowExt_off = 127;
+-static const int m2ThreshLowExt_off = 127;
+-static const int m1ThreshExt_off = 127;
+-static const int m2ThreshExt_off = 127;
+-
+ /**
+  * ar9003_hw_set_channel - set channel on single-chip device
+  * @ah: atheros hardware structure
+@@ -954,11 +940,6 @@ static bool ar9003_hw_ani_control(struct
+ 	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) {
+@@ -972,61 +953,6 @@ static bool ar9003_hw_ani_control(struct
+ 		 */
+ 		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);