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Revert "ath9k_hw: implement temperature compensation support for AR9003+" 

This reverts commit 171f6402e4 ("ath9k_hw: implement temperature compensation
support for AR9003+"). Some users report that this commit causes a regression
in performance under some conditions.

Fixes: 171f6402e4 ("ath9k_hw: implement temperature compensation support for AR9003+")
Cc: <stable@vger.kernel.org> # 4.8
Signed-off-by: Felix Fietkau <nbd@nbd.name>
[kvalo@qca.qualcomm.com: improve commit log]
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
This commit is contained in:
Felix Fietkau 2016-10-11 19:46:49 +02:00 committed by Kalle Valo
parent f67b107d4c
commit 304e5ac118
2 changed files with 3 additions and 23 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

25
drivers/net/wireless/ath/ath9k/ar9003_calib.c
View File

@ -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(struct ath_hw *ah,
/* 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(struct ath_hw *ah,
/*
* 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(struct ath_hw *ah,
/*
* 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_cal_single_sample = {
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(struct ath_hw *ah)
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(struct ath_hw *ah)
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;

1
drivers/net/wireless/ath/ath9k/hw.h
View File

@ -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;