From adddc0d20bf4476380da94bfda8c591c49bb6cde Mon Sep 17 00:00:00 2001 From: Sujith Manoharan Date: Fri, 7 Feb 2014 10:29:52 +0530 Subject: [PATCH] ath9k: Fix magnitude/phase calculation 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 Signed-off-by: John W. Linville --- drivers/net/wireless/ath/ath9k/ar9003_calib.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/drivers/net/wireless/ath/ath9k/ar9003_calib.c b/drivers/net/wireless/ath/ath9k/ar9003_calib.c index b3f7ea7..12310e1 100644 --- a/drivers/net/wireless/ath/ath9k/ar9003_calib.c +++ b/drivers/net/wireless/ath/ath9k/ar9003_calib.c @@ -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) -- 2.7.4