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ath9k_hw: add the AR9003 ar9003_hw_init_cal callback 

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Luis R. Rodriguez 2010-04-15 17:39:01 -04:00 committed by John W. Linville
parent 795f5e2ca6
commit 590b7d2f10
1 changed files with 144 additions and 1 deletions
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145
drivers/net/wireless/ath/ath9k/ar9003_calib.c
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@ -40,9 +40,152 @@ static bool ar9003_hw_init_cal(struct ath_hw *ah,
return false;
}
static void ar9003_hw_iqcal_collect(struct ath_hw *ah)
{
int i;
/* Accumulate IQ cal measures for active chains */
for (i = 0; i < AR5416_MAX_CHAINS; i++) {
ah->totalPowerMeasI[i] +=
REG_READ(ah, AR_PHY_CAL_MEAS_0(i));
ah->totalPowerMeasQ[i] +=
REG_READ(ah, AR_PHY_CAL_MEAS_1(i));
ah->totalIqCorrMeas[i] +=
(int32_t) REG_READ(ah, AR_PHY_CAL_MEAS_2(i));
ath_print(ath9k_hw_common(ah), ATH_DBG_CALIBRATE,
"%d: Chn %d pmi=0x%08x;pmq=0x%08x;iqcm=0x%08x;\n",
ah->cal_samples, i, ah->totalPowerMeasI[i],
ah->totalPowerMeasQ[i],
ah->totalIqCorrMeas[i]);
}
}
static void ar9003_hw_iqcalibrate(struct ath_hw *ah, u8 numChains)
{
struct ath_common *common = ath9k_hw_common(ah);
u32 powerMeasQ, powerMeasI, iqCorrMeas;
u32 qCoffDenom, iCoffDenom;
int32_t qCoff, iCoff;
int iqCorrNeg, i;
const u_int32_t offset_array[3] = {
AR_PHY_RX_IQCAL_CORR_B0,
AR_PHY_RX_IQCAL_CORR_B1,
AR_PHY_RX_IQCAL_CORR_B2,
};
for (i = 0; i < numChains; i++) {
powerMeasI = ah->totalPowerMeasI[i];
powerMeasQ = ah->totalPowerMeasQ[i];
iqCorrMeas = ah->totalIqCorrMeas[i];
ath_print(common, ATH_DBG_CALIBRATE,
"Starting IQ Cal and Correction for Chain %d\n",
i);
ath_print(common, ATH_DBG_CALIBRATE,
"Orignal: Chn %diq_corr_meas = 0x%08x\n",
i, ah->totalIqCorrMeas[i]);
iqCorrNeg = 0;
if (iqCorrMeas > 0x80000000) {
iqCorrMeas = (0xffffffff - iqCorrMeas) + 1;
iqCorrNeg = 1;
}
ath_print(common, ATH_DBG_CALIBRATE,
"Chn %d pwr_meas_i = 0x%08x\n", i, powerMeasI);
ath_print(common, ATH_DBG_CALIBRATE,
"Chn %d pwr_meas_q = 0x%08x\n", i, powerMeasQ);
ath_print(common, ATH_DBG_CALIBRATE, "iqCorrNeg is 0x%08x\n",
iqCorrNeg);
iCoffDenom = (powerMeasI / 2 + powerMeasQ / 2) / 256;
qCoffDenom = powerMeasQ / 64;
if ((iCoffDenom != 0) && (qCoffDenom != 0)) {
iCoff = iqCorrMeas / iCoffDenom;
qCoff = powerMeasI / qCoffDenom - 64;
ath_print(common, ATH_DBG_CALIBRATE,
"Chn %d iCoff = 0x%08x\n", i, iCoff);
ath_print(common, ATH_DBG_CALIBRATE,
"Chn %d qCoff = 0x%08x\n", i, qCoff);
/* Force bounds on iCoff */
if (iCoff >= 63)
iCoff = 63;
else if (iCoff <= -63)
iCoff = -63;
/* Negate iCoff if iqCorrNeg == 0 */
if (iqCorrNeg == 0x0)
iCoff = -iCoff;
/* Force bounds on qCoff */
if (qCoff >= 63)
qCoff = 63;
else if (qCoff <= -63)
qCoff = -63;
iCoff = iCoff & 0x7f;
qCoff = qCoff & 0x7f;
ath_print(common, ATH_DBG_CALIBRATE,
"Chn %d : iCoff = 0x%x qCoff = 0x%x\n",
i, iCoff, qCoff);
ath_print(common, ATH_DBG_CALIBRATE,
"Register offset (0x%04x) "
"before update = 0x%x\n",
offset_array[i],
REG_READ(ah, offset_array[i]));
REG_RMW_FIELD(ah, offset_array[i],
AR_PHY_RX_IQCAL_CORR_IQCORR_Q_I_COFF,
iCoff);
REG_RMW_FIELD(ah, offset_array[i],
AR_PHY_RX_IQCAL_CORR_IQCORR_Q_Q_COFF,
qCoff);
ath_print(common, ATH_DBG_CALIBRATE,
"Register offset (0x%04x) QI COFF "
"(bitfields 0x%08x) after update = 0x%x\n",
offset_array[i],
AR_PHY_RX_IQCAL_CORR_IQCORR_Q_I_COFF,
REG_READ(ah, offset_array[i]));
ath_print(common, ATH_DBG_CALIBRATE,
"Register offset (0x%04x) QQ COFF "
"(bitfields 0x%08x) after update = 0x%x\n",
offset_array[i],
AR_PHY_RX_IQCAL_CORR_IQCORR_Q_Q_COFF,
REG_READ(ah, offset_array[i]));
ath_print(common, ATH_DBG_CALIBRATE,
"IQ Cal and Correction done for Chain %d\n",
i);
}
}
REG_SET_BIT(ah, AR_PHY_RX_IQCAL_CORR_B0,
AR_PHY_RX_IQCAL_CORR_IQCORR_ENABLE);
ath_print(common, ATH_DBG_CALIBRATE,
"IQ Cal and Correction (offset 0x%04x) enabled "
"(bit position 0x%08x). New Value 0x%08x\n",
(unsigned) (AR_PHY_RX_IQCAL_CORR_B0),
AR_PHY_RX_IQCAL_CORR_IQCORR_ENABLE,
REG_READ(ah, AR_PHY_RX_IQCAL_CORR_B0));
}
static const struct ath9k_percal_data iq_cal_single_sample = {
IQ_MISMATCH_CAL,
MIN_CAL_SAMPLES,
PER_MAX_LOG_COUNT,
ar9003_hw_iqcal_collect,
ar9003_hw_iqcalibrate
};
static void ar9003_hw_init_cal_settings(struct ath_hw *ah)
{
/* TODO */
ah->iq_caldata.calData = &iq_cal_single_sample;
ah->supp_cals = IQ_MISMATCH_CAL;
}
static bool ar9003_hw_iscal_supported(struct ath_hw *ah,