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authorFelix Fietkau <nbd@openwrt.org>2014-03-11 15:31:50 +0000
committerFelix Fietkau <nbd@openwrt.org>2014-03-11 15:31:50 +0000
commitc112b16dd88d1cae29d7e173e743bf0b64ea7f3d (patch)
tree2ec43d5bbe06c63d18c016f9d423ecbe104ce7f3 /package/kernel
parent97ea9e3c2aeefd0c782628797260f0e4d1e5937d (diff)
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ath9k: further improvements to noise immunity handling on older chips
Signed-off-by: Felix Fietkau <nbd@openwrt.org> SVN-Revision: 39879
Diffstat (limited to 'package/kernel')
-rw-r--r--package/kernel/mac80211/patches/300-pending_work.patch168
-rw-r--r--package/kernel/mac80211/patches/550-ath9k_entropy_from_adc.patch4
2 files changed, 170 insertions, 2 deletions
diff --git a/package/kernel/mac80211/patches/300-pending_work.patch b/package/kernel/mac80211/patches/300-pending_work.patch
index a74bd2b3eb..897f6c4193 100644
--- a/package/kernel/mac80211/patches/300-pending_work.patch
+++ b/package/kernel/mac80211/patches/300-pending_work.patch
@@ -1,3 +1,38 @@
+commit 3a0f984b1cdcd6a9f8c441635ef3b05d58547f4e
+Author: Felix Fietkau <nbd@openwrt.org>
+Date: Tue Mar 11 14:03:32 2014 +0100
+
+ ath9k_hw: set ANI firstep as absolute values instead of relative
+
+ On older chips, the INI value differ in similar ways as cycpwr_thr1, so
+ convert it to absolute values as well.
+
+ Since the ANI algorithm is different here compared to the old
+ implementation (fewer steps, controlled at a different point in time),
+ it makes sense to use values similar to what would be applied for newer
+ chips, just without relying on INI defaults.
+
+ Signed-off-by: Felix Fietkau <nbd@openwrt.org>
+
+commit 91d70d40400c569b49605b78fd7c43e9405694f4
+Author: Felix Fietkau <nbd@openwrt.org>
+Date: Tue Mar 11 14:00:37 2014 +0100
+
+ ath9k_hw: set ANI cycpwr_thr1 as absolute values instead of relative
+
+ 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@openwrt.org>
+
commit c977493766310a825f406836636ffd66e1447783
Author: Felix Fietkau <nbd@openwrt.org>
Date: Mon Mar 10 19:52:56 2014 +0100
@@ -3942,3 +3977,136 @@ Date: Thu Jan 23 20:06:34 2014 +0100
#define ATH9K_ANI_SPUR_IMMUNE_LVL 3
#define ATH9K_ANI_FIRSTEP_LVL 2
+--- 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
+ */
+@@ -921,7 +917,7 @@ static bool ar5008_hw_ani_control_new(st
+ struct ath_common *common = ath9k_hw_common(ah);
+ struct ath9k_channel *chan = ah->curchan;
+ struct ar5416AniState *aniState = &ah->ani;
+- s32 value, value2;
++ s32 value;
+
+ switch (cmd & ah->ani_function) {
+ case ATH9K_ANI_OFDM_WEAK_SIGNAL_DETECTION:{
+@@ -1008,42 +1004,11 @@ static bool ar5008_hw_ani_control_new(st
+ case ATH9K_ANI_FIRSTEP_LEVEL:{
+ u32 level = param;
+
+- if (level >= ARRAY_SIZE(firstep_table)) {
+- ath_dbg(common, ANI,
+- "ATH9K_ANI_FIRSTEP_LEVEL: level out of range (%u > %zu)\n",
+- level, ARRAY_SIZE(firstep_table));
+- return false;
+- }
+-
+- /*
+- * make register setting relative to default
+- * from INI file & cap value
+- */
+- value = firstep_table[level] -
+- firstep_table[ATH9K_ANI_FIRSTEP_LVL] +
+- aniState->iniDef.firstep;
+- if (value < ATH9K_SIG_FIRSTEP_SETTING_MIN)
+- value = ATH9K_SIG_FIRSTEP_SETTING_MIN;
+- if (value > ATH9K_SIG_FIRSTEP_SETTING_MAX)
+- value = ATH9K_SIG_FIRSTEP_SETTING_MAX;
++ value = level * 2;
+ REG_RMW_FIELD(ah, AR_PHY_FIND_SIG,
+- AR_PHY_FIND_SIG_FIRSTEP,
+- value);
+- /*
+- * we need to set first step low register too
+- * make register setting relative to default
+- * from INI file & cap value
+- */
+- value2 = firstep_table[level] -
+- firstep_table[ATH9K_ANI_FIRSTEP_LVL] +
+- aniState->iniDef.firstepLow;
+- if (value2 < ATH9K_SIG_FIRSTEP_SETTING_MIN)
+- value2 = ATH9K_SIG_FIRSTEP_SETTING_MIN;
+- if (value2 > ATH9K_SIG_FIRSTEP_SETTING_MAX)
+- value2 = ATH9K_SIG_FIRSTEP_SETTING_MAX;
+-
++ AR_PHY_FIND_SIG_FIRSTEP, value);
+ REG_RMW_FIELD(ah, AR_PHY_FIND_SIG_LOW,
+- AR_PHY_FIND_SIG_FIRSTEP_LOW, value2);
++ AR_PHY_FIND_SIG_FIRSTEP_LOW, value);
+
+ if (level != aniState->firstepLevel) {
+ ath_dbg(common, ANI,
+@@ -1060,7 +1025,7 @@ static bool ar5008_hw_ani_control_new(st
+ aniState->firstepLevel,
+ level,
+ ATH9K_ANI_FIRSTEP_LVL,
+- value2,
++ value,
+ aniState->iniDef.firstepLow);
+ if (level > aniState->firstepLevel)
+ ah->stats.ast_ani_stepup++;
+@@ -1073,41 +1038,13 @@ static bool ar5008_hw_ani_control_new(st
+ 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 +1061,7 @@ static bool ar5008_hw_ani_control_new(st
+ aniState->spurImmunityLevel,
+ level,
+ ATH9K_ANI_SPUR_IMMUNE_LVL,
+- value2,
++ value,
+ aniState->iniDef.cycpwrThr1Ext);
+ if (level > aniState->spurImmunityLevel)
+ ah->stats.ast_ani_spurup++;
diff --git a/package/kernel/mac80211/patches/550-ath9k_entropy_from_adc.patch b/package/kernel/mac80211/patches/550-ath9k_entropy_from_adc.patch
index 011c99e3b7..d126fd4e94 100644
--- a/package/kernel/mac80211/patches/550-ath9k_entropy_from_adc.patch
+++ b/package/kernel/mac80211/patches/550-ath9k_entropy_from_adc.patch
@@ -124,7 +124,7 @@
long_cal_interval = ATH_LONG_CALINTERVAL_INT;
--- a/drivers/net/wireless/ath/ath9k/ar5008_phy.c
+++ b/drivers/net/wireless/ath/ath9k/ar5008_phy.c
-@@ -1296,9 +1296,30 @@ static void ar5008_hw_set_radar_conf(str
+@@ -1233,9 +1233,30 @@ static void ar5008_hw_set_radar_conf(str
conf->radar_inband = 8;
}
@@ -155,7 +155,7 @@
static const u32 ar5416_cca_regs[6] = {
AR_PHY_CCA,
AR_PHY_CH1_CCA,
-@@ -1313,6 +1334,8 @@ int ar5008_hw_attach_phy_ops(struct ath_
+@@ -1250,6 +1271,8 @@ int ar5008_hw_attach_phy_ops(struct ath_
if (ret)
return ret;