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From: Felix Fietkau <nbd@nbd.name>
Date: Mon, 11 Jul 2016 11:35:55 +0200
Subject: [PATCH] ath9k_hw: implement temperature compensation support for
AR9003+
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
@@ -33,6 +33,7 @@ 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,
@@ -58,6 +59,12 @@ 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;
@@ -86,7 +93,8 @@ static bool ar9003_hw_per_calibration(st
/*
* Accumulate cal measures for active chains
*/
- cur_caldata->calCollect(ah);
+ if (cur_caldata->calCollect)
+ cur_caldata->calCollect(ah);
ah->cal_samples++;
if (ah->cal_samples >= cur_caldata->calNumSamples) {
@@ -99,7 +107,8 @@ static bool ar9003_hw_per_calibration(st
/*
* Process accumulated data
*/
- cur_caldata->calPostProc(ah, numChains);
+ if (cur_caldata->calPostProc)
+ cur_caldata->calPostProc(ah, numChains);
/* Calibration has finished. */
caldata->CalValid |= cur_caldata->calType;
@@ -314,9 +323,16 @@ 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;
@@ -324,7 +340,7 @@ static void ar9003_hw_init_cal_settings(
ah->enabled_cals |= TX_IQ_ON_AGC_CAL;
}
- ah->supp_cals = IQ_MISMATCH_CAL;
+ ah->supp_cals = IQ_MISMATCH_CAL | TEMP_COMP_CAL;
}
#define OFF_UPPER_LT 24
@@ -1383,6 +1399,9 @@ 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
@@ -830,6 +830,7 @@ 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;
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