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Diffstat (limited to 'package/mac80211/patches/542-ath9k_bstuck_nf_calibrate.patch')
-rw-r--r--package/mac80211/patches/542-ath9k_bstuck_nf_calibrate.patch129
1 files changed, 0 insertions, 129 deletions
diff --git a/package/mac80211/patches/542-ath9k_bstuck_nf_calibrate.patch b/package/mac80211/patches/542-ath9k_bstuck_nf_calibrate.patch
deleted file mode 100644
index 4ac4ab210a..0000000000
--- a/package/mac80211/patches/542-ath9k_bstuck_nf_calibrate.patch
+++ /dev/null
@@ -1,129 +0,0 @@
---- a/drivers/net/wireless/ath/ath9k/beacon.c
-+++ b/drivers/net/wireless/ath/ath9k/beacon.c
-@@ -362,6 +362,7 @@ void ath_beacon_tasklet(unsigned long da
- ath_print(common, ATH_DBG_BSTUCK,
- "missed %u consecutive beacons\n",
- sc->beacon.bmisscnt);
-+ ath9k_hw_bstuck_nfcal(ah);
- } else if (sc->beacon.bmisscnt >= BSTUCK_THRESH) {
- ath_print(common, ATH_DBG_BSTUCK,
- "beacon is officially stuck\n");
---- a/drivers/net/wireless/ath/ath9k/calib.c
-+++ b/drivers/net/wireless/ath/ath9k/calib.c
-@@ -65,12 +65,16 @@ static s16 ath9k_hw_get_default_nf(struc
-
-
- static void ath9k_hw_update_nfcal_hist_buffer(struct ath_hw *ah,
-- struct ath9k_nfcal_hist *h,
-+ struct ath9k_hw_cal_data *cal,
- int16_t *nfarray)
- {
-+ struct ath_common *common = ath9k_hw_common(ah);
- struct ath_nf_limits *limit;
-+ struct ath9k_nfcal_hist *h;
-+ bool high_nf_mid = false;
- int i;
-
-+ h = cal->nfCalHist;
- limit = ath9k_hw_get_nf_limits(ah, ah->curchan);
-
- for (i = 0; i < NUM_NF_READINGS; i++) {
-@@ -87,9 +91,38 @@ static void ath9k_hw_update_nfcal_hist_b
- ath9k_hw_get_nf_hist_mid(h[i].nfCalBuffer);
- }
-
-- if (h[i].privNF > limit->max)
-- h[i].privNF = limit->max;
-+ if (!h[i].privNF)
-+ continue;
-+
-+ if (h[i].privNF > limit->max) {
-+ high_nf_mid = true;
-+
-+ ath_print(common, ATH_DBG_CALIBRATE,
-+ "NFmid[%d] (%d) > MAX (%d), %s\n",
-+ i, h[i].privNF, limit->max,
-+ (cal->nfcal_interference ?
-+ "not corrected (due to interference)" :
-+ "correcting to MAX"));
-+
-+ /*
-+ * Normally we limit the average noise floor by the
-+ * hardware specific maximum here. However if we have
-+ * encountered stuck beacons because of interference,
-+ * we bypass this limit here in order to better deal
-+ * with our environment.
-+ */
-+ if (!cal->nfcal_interference)
-+ h[i].privNF = limit->max;
-+ }
- }
-+
-+ /*
-+ * If the noise floor seems normal for all chains, assume that
-+ * there is no significant interference in the environment anymore.
-+ * Re-enable the enforcement of the NF maximum again.
-+ */
-+ if (!high_nf_mid)
-+ cal->nfcal_interference = false;
- }
-
- static bool ath9k_hw_get_nf_thresh(struct ath_hw *ah,
-@@ -339,7 +372,7 @@ bool ath9k_hw_getnf(struct ath_hw *ah, s
-
- h = caldata->nfCalHist;
- caldata->nfcal_pending = false;
-- ath9k_hw_update_nfcal_hist_buffer(ah, h, nfarray);
-+ ath9k_hw_update_nfcal_hist_buffer(ah, caldata, nfarray);
- caldata->rawNoiseFloor = h[0].privNF;
- return true;
- }
-@@ -374,3 +407,28 @@ s16 ath9k_hw_getchan_noise(struct ath_hw
- return ah->caldata->rawNoiseFloor;
- }
- EXPORT_SYMBOL(ath9k_hw_getchan_noise);
-+
-+void ath9k_hw_bstuck_nfcal(struct ath_hw *ah)
-+{
-+ struct ath9k_hw_cal_data *caldata = ah->caldata;
-+
-+ if (unlikely(!caldata))
-+ return;
-+
-+ /*
-+ * If beacons are stuck, the most likely cause is interference.
-+ * Triggering a noise floor calibration at this point helps the
-+ * hardware adapt to a noisy environment much faster.
-+ * To ensure that we recover from stuck beacons quickly, let
-+ * the baseband update the internal NF value itself, similar to
-+ * what is being done after a full reset.
-+ */
-+ if (!caldata->nfcal_pending)
-+ ath9k_hw_start_nfcal(ah, true);
-+ else if (!(REG_READ(ah, AR_PHY_AGC_CONTROL) & AR_PHY_AGC_CONTROL_NF))
-+ ath9k_hw_getnf(ah, ah->curchan);
-+
-+ caldata->nfcal_interference = true;
-+}
-+EXPORT_SYMBOL(ath9k_hw_bstuck_nfcal);
-+
---- a/drivers/net/wireless/ath/ath9k/calib.h
-+++ b/drivers/net/wireless/ath/ath9k/calib.h
-@@ -113,6 +113,7 @@ void ath9k_hw_loadnf(struct ath_hw *ah,
- bool ath9k_hw_getnf(struct ath_hw *ah, struct ath9k_channel *chan);
- void ath9k_init_nfcal_hist_buffer(struct ath_hw *ah,
- struct ath9k_channel *chan);
-+void ath9k_hw_bstuck_nfcal(struct ath_hw *ah);
- s16 ath9k_hw_getchan_noise(struct ath_hw *ah, struct ath9k_channel *chan);
- void ath9k_hw_reset_calibration(struct ath_hw *ah,
- struct ath9k_cal_list *currCal);
---- a/drivers/net/wireless/ath/ath9k/hw.h
-+++ b/drivers/net/wireless/ath/ath9k/hw.h
-@@ -355,6 +355,7 @@ struct ath9k_hw_cal_data {
- int16_t rawNoiseFloor;
- bool paprd_done;
- bool nfcal_pending;
-+ bool nfcal_interference;
- u16 small_signal_gain[AR9300_MAX_CHAINS];
- u32 pa_table[AR9300_MAX_CHAINS][PAPRD_TABLE_SZ];
- struct ath9k_nfcal_hist nfCalHist[NUM_NF_READINGS];