The table was copied from the ANI implementation of AR9300. It assumes
that the INI values contain a baseline value that is usable as reference
from which to increase/decrease based on the noise immunity value.
On older chips, the differences are bigger and especially AR5008/AR9001
are configured to much more sensitive values than what is useful.
Improve ANI behavior by reverting to the absolute values used in the
previous implementation (expressed as a simple formula instead of the
old table).
Signed-off-by: Felix Fietkau <nbd@xxxxxxxxxxx>
---
drivers/net/wireless/ath/ath9k/ar5008_phy.c | 44 ++++-------------------------
1 file changed, 6 insertions(+), 38 deletions(-)
diff --git a/drivers/net/wireless/ath/ath9k/ar5008_phy.c b/drivers/net/wireless/ath/ath9k/ar5008_phy.c
index ff415e8..504e189 100644
--- a/drivers/net/wireless/ath/ath9k/ar5008_phy.c
+++ b/drivers/net/wireless/ath/ath9k/ar5008_phy.c
@@ -26,10 +26,6 @@ static const int firstep_table[] =
/* level: 0 1 2 3 4 5 6 7 8 */
{ -4, -2, 0, 2, 4, 6, 8, 10, 12 }; /* lvl 0-8, default 2 */
-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
*/
@@ -1073,41 +1069,13 @@ static bool ar5008_hw_ani_control_new(struct ath_hw *ah,
case ATH9K_ANI_SPUR_IMMUNITY_LEVEL:{
u32 level = param;
- if (level >= ARRAY_SIZE(cycpwrThr1_table)) {
- ath_dbg(common, ANI,
- "ATH9K_ANI_SPUR_IMMUNITY_LEVEL: level out of range (%u > %zu)\n",
- level, ARRAY_SIZE(cycpwrThr1_table));
- return false;
- }
- /*
- * make register setting relative to default
- * from INI file & cap value
- */
- value = cycpwrThr1_table[level] -
- cycpwrThr1_table[ATH9K_ANI_SPUR_IMMUNE_LVL] +
- aniState->iniDef.cycpwrThr1;
- if (value < ATH9K_SIG_SPUR_IMM_SETTING_MIN)
- value = ATH9K_SIG_SPUR_IMM_SETTING_MIN;
- if (value > ATH9K_SIG_SPUR_IMM_SETTING_MAX)
- value = ATH9K_SIG_SPUR_IMM_SETTING_MAX;
+ value = (level + 1) * 2;
REG_RMW_FIELD(ah, AR_PHY_TIMING5,
- AR_PHY_TIMING5_CYCPWR_THR1,
- value);
+ AR_PHY_TIMING5_CYCPWR_THR1, value);
- /*
- * set AR_PHY_EXT_CCA for extension channel
- * make register setting relative to default
- * from INI file & cap value
- */
- value2 = cycpwrThr1_table[level] -
- cycpwrThr1_table[ATH9K_ANI_SPUR_IMMUNE_LVL] +
- aniState->iniDef.cycpwrThr1Ext;
- if (value2 < ATH9K_SIG_SPUR_IMM_SETTING_MIN)
- value2 = ATH9K_SIG_SPUR_IMM_SETTING_MIN;
- if (value2 > ATH9K_SIG_SPUR_IMM_SETTING_MAX)
- value2 = ATH9K_SIG_SPUR_IMM_SETTING_MAX;
- REG_RMW_FIELD(ah, AR_PHY_EXT_CCA,
- AR_PHY_EXT_TIMING5_CYCPWR_THR1, value2);
+ if (IS_CHAN_HT40(ah->curchan))
+ REG_RMW_FIELD(ah, AR_PHY_EXT_CCA,
+ AR_PHY_EXT_TIMING5_CYCPWR_THR1, value);
if (level != aniState->spurImmunityLevel) {
ath_dbg(common, ANI,
@@ -1124,7 +1092,7 @@ static bool ar5008_hw_ani_control_new(struct ath_hw *ah,
aniState->spurImmunityLevel,
level,
ATH9K_ANI_SPUR_IMMUNE_LVL,
- value2,
+ value,
aniState->iniDef.cycpwrThr1Ext);
if (level > aniState->spurImmunityLevel)
ah->stats.ast_ani_spurup++;
--
1.8.3.4 (Apple Git-47)
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