From 4357a81d8af1fb5a6ece2fbfbd3540622fea2548 Mon Sep 17 00:00:00 2001 From: Sujith Manoharan Date: Fri, 7 Feb 2014 10:29:54 +0530 Subject: [PATCH] ath9k: Expand the IQ coefficient array This will be used for storing data for mutiple IQ calibration runs, for AR955x. Signed-off-by: Sujith Manoharan Signed-off-by: John W. Linville --- drivers/net/wireless/ath/ath9k/ar9003_calib.c | 41 ++++++++++++++------------- 1 file changed, 21 insertions(+), 20 deletions(-) diff --git a/drivers/net/wireless/ath/ath9k/ar9003_calib.c b/drivers/net/wireless/ath/ath9k/ar9003_calib.c index 327befa..6946e72 100644 --- a/drivers/net/wireless/ath/ath9k/ar9003_calib.c +++ b/drivers/net/wireless/ath/ath9k/ar9003_calib.c @@ -26,8 +26,8 @@ #define MAXIQCAL 3 struct coeff { - int mag_coeff[AR9300_MAX_CHAINS][MAX_MEASUREMENT]; - int phs_coeff[AR9300_MAX_CHAINS][MAX_MEASUREMENT]; + int mag_coeff[AR9300_MAX_CHAINS][MAX_MEASUREMENT][MAXIQCAL]; + int phs_coeff[AR9300_MAX_CHAINS][MAX_MEASUREMENT][MAXIQCAL]; int iqc_coeff[2]; }; @@ -837,7 +837,8 @@ static bool ar9003_hw_calc_iq_corr(struct ath_hw *ah, return true; } -static void ar9003_hw_detect_outlier(int *mp_coeff, int nmeasurement, +static void ar9003_hw_detect_outlier(int mp_coeff[][MAXIQCAL], + int nmeasurement, int max_delta) { int mp_max = -64, max_idx = 0; @@ -846,20 +847,20 @@ static void ar9003_hw_detect_outlier(int *mp_coeff, int nmeasurement, /* find min/max mismatch across all calibrated gains */ for (i = 0; i < nmeasurement; i++) { - if (mp_coeff[i] > mp_max) { - mp_max = mp_coeff[i]; + if (mp_coeff[i][0] > mp_max) { + mp_max = mp_coeff[i][0]; max_idx = i; - } else if (mp_coeff[i] < mp_min) { - mp_min = mp_coeff[i]; + } else if (mp_coeff[i][0] < mp_min) { + mp_min = mp_coeff[i][0]; min_idx = i; } } /* find average (exclude max abs value) */ for (i = 0; i < nmeasurement; i++) { - if ((abs(mp_coeff[i]) < abs(mp_max)) || - (abs(mp_coeff[i]) < abs(mp_min))) { - mp_avg += mp_coeff[i]; + if ((abs(mp_coeff[i][0]) < abs(mp_max)) || + (abs(mp_coeff[i][0]) < abs(mp_min))) { + mp_avg += mp_coeff[i][0]; mp_count++; } } @@ -871,7 +872,7 @@ static void ar9003_hw_detect_outlier(int *mp_coeff, int nmeasurement, if (mp_count) mp_avg /= mp_count; else - mp_avg = mp_coeff[nmeasurement - 1]; + mp_avg = mp_coeff[nmeasurement - 1][0]; /* detect outlier */ if (abs(mp_max - mp_min) > max_delta) { @@ -880,7 +881,7 @@ static void ar9003_hw_detect_outlier(int *mp_coeff, int nmeasurement, else outlier_idx = min_idx; - mp_coeff[outlier_idx] = mp_avg; + mp_coeff[outlier_idx][0] = mp_avg; } } @@ -931,8 +932,8 @@ 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]; + magnitude = coeff->mag_coeff[i][im][0]; + phase = coeff->phs_coeff[i][im][0]; coeff->iqc_coeff[0] = (phase & 0x7f) | ((magnitude & 0x7f) << 7); @@ -1068,15 +1069,15 @@ static void ar9003_hw_tx_iq_cal_post_proc(struct ath_hw *ah, goto tx_iqcal_fail; } - coeff.phs_coeff[i][im] = + coeff.phs_coeff[i][im][iqcal_idx] = coeff.iqc_coeff[0] & 0x7f; - coeff.mag_coeff[i][im] = + coeff.mag_coeff[i][im][iqcal_idx] = (coeff.iqc_coeff[0] >> 7) & 0x7f; - if (coeff.mag_coeff[i][im] > 63) - coeff.mag_coeff[i][im] -= 128; - if (coeff.phs_coeff[i][im] > 63) - coeff.phs_coeff[i][im] -= 128; + if (coeff.mag_coeff[i][im][iqcal_idx] > 63) + coeff.mag_coeff[i][im][iqcal_idx] -= 128; + if (coeff.phs_coeff[i][im][iqcal_idx] > 63) + coeff.phs_coeff[i][im][iqcal_idx] -= 128; } } ar9003_hw_tx_iq_cal_outlier_detection(ah, &coeff, is_reusable); -- 2.7.4