redonkable/alistair23-linux
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ath9k: Fix magnitude/phase calculation

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Incorrect values are programmed in the registers
containing the IQ correction coefficients by the IQ-CAL
post-processing code. Fix this.

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Sujith Manoharan 2014-02-07 10:29:52 +05:30 committed by John W. Linville
parent 8c2213876e
commit adddc0d20b
1 changed files with 7 additions and 3 deletions
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10
drivers/net/wireless/ath/ath9k/ar9003_calib.c
View file

@ -888,6 +888,7 @@ static void ar9003_hw_tx_iq_cal_outlier_detection(struct ath_hw *ah,
bool is_reusable)
{
int i, im, nmeasurement;
int magnitude, phase;
u32 tx_corr_coeff[MAX_MEASUREMENT][AR9300_MAX_CHAINS];
struct ath9k_hw_cal_data *caldata = ah->caldata;
@ -929,9 +930,11 @@ static void ar9003_hw_tx_iq_cal_outlier_detection(struct ath_hw *ah,
}
for (im = 0; im < nmeasurement; im++) {
magnitude = coeff->mag_coeff[i][im];
phase = coeff->phs_coeff[i][im];
coeff->iqc_coeff[0] = (coeff->mag_coeff[i][im] & 0x7f) |
((coeff->phs_coeff[i][im] & 0x7f) << 7);
coeff->iqc_coeff[0] =
(phase & 0x7f) | ((magnitude & 0x7f) << 7);
if ((im % 2) == 0)
REG_RMW_FIELD(ah, tx_corr_coeff[im][i],
@ -1062,8 +1065,9 @@ static void ar9003_hw_tx_iq_cal_post_proc(struct ath_hw *ah, bool is_reusable)
goto tx_iqcal_fail;
}
coeff.mag_coeff[i][im] = coeff.iqc_coeff[0] & 0x7f;
coeff.phs_coeff[i][im] =
coeff.iqc_coeff[0] & 0x7f;
coeff.mag_coeff[i][im] =
(coeff.iqc_coeff[0] >> 7) & 0x7f;
if (coeff.mag_coeff[i][im] > 63)