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path: root/drivers/net/wireless/ath/ath9k/ani.c
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Diffstat (limited to 'drivers/net/wireless/ath/ath9k/ani.c')
-rw-r--r--drivers/net/wireless/ath/ath9k/ani.c52
1 files changed, 29 insertions, 23 deletions
diff --git a/drivers/net/wireless/ath/ath9k/ani.c b/drivers/net/wireless/ath/ath9k/ani.c
index d28923b7435b..6d47783f2e5b 100644
--- a/drivers/net/wireless/ath/ath9k/ani.c
+++ b/drivers/net/wireless/ath/ath9k/ani.c
@@ -176,16 +176,26 @@ static void ath9k_hw_set_ofdm_nil(struct ath_hw *ah, u8 immunityLevel,
if (ah->opmode == NL80211_IFTYPE_STATION &&
BEACON_RSSI(ah) <= ATH9K_ANI_RSSI_THR_HIGH)
weak_sig = true;
-
/*
- * OFDM Weak signal detection is always enabled for AP mode.
+ * Newer chipsets are better at dealing with high PHY error counts -
+ * keep weak signal detection enabled when no RSSI threshold is
+ * available to determine if it is needed (mode != STA)
*/
- if (ah->opmode != NL80211_IFTYPE_AP &&
- aniState->ofdmWeakSigDetect != weak_sig) {
- ath9k_hw_ani_control(ah,
- ATH9K_ANI_OFDM_WEAK_SIGNAL_DETECTION,
- entry_ofdm->ofdm_weak_signal_on);
- }
+ else if (AR_SREV_9300_20_OR_LATER(ah) &&
+ ah->opmode != NL80211_IFTYPE_STATION)
+ weak_sig = true;
+
+ /* Older chipsets are more sensitive to high PHY error counts */
+ else if (!AR_SREV_9300_20_OR_LATER(ah) &&
+ aniState->ofdmNoiseImmunityLevel >= 8)
+ weak_sig = false;
+
+ if (aniState->ofdmWeakSigDetect != weak_sig)
+ ath9k_hw_ani_control(ah, ATH9K_ANI_OFDM_WEAK_SIGNAL_DETECTION,
+ weak_sig);
+
+ if (!AR_SREV_9300_20_OR_LATER(ah))
+ return;
if (aniState->ofdmNoiseImmunityLevel >= ATH9K_ANI_OFDM_DEF_LEVEL) {
ah->config.ofdm_trig_high = ATH9K_ANI_OFDM_TRIG_HIGH;
@@ -308,17 +318,6 @@ void ath9k_ani_reset(struct ath_hw *ah, bool is_scanning)
BUG_ON(aniState == NULL);
ah->stats.ast_ani_reset++;
- /* only allow a subset of functions in AP mode */
- if (ah->opmode == NL80211_IFTYPE_AP) {
- if (IS_CHAN_2GHZ(chan)) {
- ah->ani_function = (ATH9K_ANI_SPUR_IMMUNITY_LEVEL |
- ATH9K_ANI_FIRSTEP_LEVEL);
- if (AR_SREV_9300_20_OR_LATER(ah))
- ah->ani_function |= ATH9K_ANI_MRC_CCK;
- } else
- ah->ani_function = 0;
- }
-
ofdm_nil = max_t(int, ATH9K_ANI_OFDM_DEF_LEVEL,
aniState->ofdmNoiseImmunityLevel);
cck_nil = max_t(int, ATH9K_ANI_CCK_DEF_LEVEL,
@@ -483,10 +482,17 @@ void ath9k_hw_ani_init(struct ath_hw *ah)
ath_dbg(common, ANI, "Initialize ANI\n");
- ah->config.ofdm_trig_high = ATH9K_ANI_OFDM_TRIG_HIGH;
- ah->config.ofdm_trig_low = ATH9K_ANI_OFDM_TRIG_LOW;
- ah->config.cck_trig_high = ATH9K_ANI_CCK_TRIG_HIGH;
- ah->config.cck_trig_low = ATH9K_ANI_CCK_TRIG_LOW;
+ if (AR_SREV_9300_20_OR_LATER(ah)) {
+ ah->config.ofdm_trig_high = ATH9K_ANI_OFDM_TRIG_HIGH;
+ ah->config.ofdm_trig_low = ATH9K_ANI_OFDM_TRIG_LOW;
+ ah->config.cck_trig_high = ATH9K_ANI_CCK_TRIG_HIGH;
+ ah->config.cck_trig_low = ATH9K_ANI_CCK_TRIG_LOW;
+ } else {
+ ah->config.ofdm_trig_high = ATH9K_ANI_OFDM_TRIG_HIGH_OLD;
+ ah->config.ofdm_trig_low = ATH9K_ANI_OFDM_TRIG_LOW_OLD;
+ ah->config.cck_trig_high = ATH9K_ANI_CCK_TRIG_HIGH_OLD;
+ ah->config.cck_trig_low = ATH9K_ANI_CCK_TRIG_LOW_OLD;
+ }
ani->spurImmunityLevel = ATH9K_ANI_SPUR_IMMUNE_LVL;
ani->firstepLevel = ATH9K_ANI_FIRSTEP_LVL;