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-rw-r--r--package/kernel/mac80211/patches/317-Revert-ath9k_hw-implement-temperature-compensation-s.patch101
1 files changed, 101 insertions, 0 deletions
diff --git a/package/kernel/mac80211/patches/317-Revert-ath9k_hw-implement-temperature-compensation-s.patch b/package/kernel/mac80211/patches/317-Revert-ath9k_hw-implement-temperature-compensation-s.patch
new file mode 100644
index 0000000..687df35
--- /dev/null
+++ b/package/kernel/mac80211/patches/317-Revert-ath9k_hw-implement-temperature-compensation-s.patch
@@ -0,0 +1,101 @@
+From: Felix Fietkau <nbd@nbd.name>
+Date: Tue, 11 Oct 2016 19:45:41 +0200
+Subject: [PATCH] Revert "ath9k_hw: implement temperature compensation support
+ for AR9003+"
+
+This reverts commit 171f6402e4aa5cd3b8407f82501f7ea21fa54ccc.
+Some users report that this commit causes a regression in performance
+under some conditions.
+
+Signed-off-by: Felix Fietkau <nbd@nbd.name>
+---
+
+--- a/drivers/net/wireless/ath/ath9k/ar9003_calib.c
++++ b/drivers/net/wireless/ath/ath9k/ar9003_calib.c
+@@ -33,7 +33,6 @@ struct coeff {
+
+ enum ar9003_cal_types {
+ IQ_MISMATCH_CAL = BIT(0),
+- TEMP_COMP_CAL = BIT(1),
+ };
+
+ static void ar9003_hw_setup_calibration(struct ath_hw *ah,
+@@ -59,12 +58,6 @@ static void ar9003_hw_setup_calibration(
+ /* Kick-off cal */
+ REG_SET_BIT(ah, AR_PHY_TIMING4, AR_PHY_TIMING4_DO_CAL);
+ break;
+- case TEMP_COMP_CAL:
+- ath_dbg(common, CALIBRATE,
+- "starting Temperature Compensation Calibration\n");
+- REG_SET_BIT(ah, AR_CH0_THERM, AR_CH0_THERM_LOCAL);
+- REG_SET_BIT(ah, AR_CH0_THERM, AR_CH0_THERM_START);
+- break;
+ default:
+ ath_err(common, "Invalid calibration type\n");
+ break;
+@@ -93,8 +86,7 @@ static bool ar9003_hw_per_calibration(st
+ /*
+ * Accumulate cal measures for active chains
+ */
+- if (cur_caldata->calCollect)
+- cur_caldata->calCollect(ah);
++ cur_caldata->calCollect(ah);
+ ah->cal_samples++;
+
+ if (ah->cal_samples >= cur_caldata->calNumSamples) {
+@@ -107,8 +99,7 @@ static bool ar9003_hw_per_calibration(st
+ /*
+ * Process accumulated data
+ */
+- if (cur_caldata->calPostProc)
+- cur_caldata->calPostProc(ah, numChains);
++ cur_caldata->calPostProc(ah, numChains);
+
+ /* Calibration has finished. */
+ caldata->CalValid |= cur_caldata->calType;
+@@ -323,16 +314,9 @@ static const struct ath9k_percal_data iq
+ ar9003_hw_iqcalibrate
+ };
+
+-static const struct ath9k_percal_data temp_cal_single_sample = {
+- TEMP_COMP_CAL,
+- MIN_CAL_SAMPLES,
+- PER_MAX_LOG_COUNT,
+-};
+-
+ static void ar9003_hw_init_cal_settings(struct ath_hw *ah)
+ {
+ ah->iq_caldata.calData = &iq_cal_single_sample;
+- ah->temp_caldata.calData = &temp_cal_single_sample;
+
+ if (AR_SREV_9300_20_OR_LATER(ah)) {
+ ah->enabled_cals |= TX_IQ_CAL;
+@@ -340,7 +324,7 @@ static void ar9003_hw_init_cal_settings(
+ ah->enabled_cals |= TX_IQ_ON_AGC_CAL;
+ }
+
+- ah->supp_cals = IQ_MISMATCH_CAL | TEMP_COMP_CAL;
++ ah->supp_cals = IQ_MISMATCH_CAL;
+ }
+
+ #define OFF_UPPER_LT 24
+@@ -1399,9 +1383,6 @@ static void ar9003_hw_init_cal_common(st
+ INIT_CAL(&ah->iq_caldata);
+ INSERT_CAL(ah, &ah->iq_caldata);
+
+- INIT_CAL(&ah->temp_caldata);
+- INSERT_CAL(ah, &ah->temp_caldata);
+-
+ /* Initialize current pointer to first element in list */
+ ah->cal_list_curr = ah->cal_list;
+
+--- a/drivers/net/wireless/ath/ath9k/hw.h
++++ b/drivers/net/wireless/ath/ath9k/hw.h
+@@ -830,7 +830,6 @@ struct ath_hw {
+ /* Calibration */
+ u32 supp_cals;
+ struct ath9k_cal_list iq_caldata;
+- struct ath9k_cal_list temp_caldata;
+ struct ath9k_cal_list adcgain_caldata;
+ struct ath9k_cal_list adcdc_caldata;
+ struct ath9k_cal_list *cal_list;