diff options
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/ar9003_calib.c | 212 |
1 files changed, 108 insertions, 104 deletions
diff --git a/drivers/net/wireless/ath/ath9k/ar9003_calib.c b/drivers/net/wireless/ath/ath9k/ar9003_calib.c index 75a1c6e5195c..4a4cd88429c0 100644 --- a/drivers/net/wireless/ath/ath9k/ar9003_calib.c +++ b/drivers/net/wireless/ath/ath9k/ar9003_calib.c @@ -608,107 +608,6 @@ static bool ar9003_hw_calc_iq_corr(struct ath_hw *ah, return true; } -static void ar9003_hw_tx_iq_cal(struct ath_hw *ah) -{ - struct ath_common *common = ath9k_hw_common(ah); - static const u32 txiqcal_status[AR9300_MAX_CHAINS] = { - AR_PHY_TX_IQCAL_STATUS_B0, - AR_PHY_TX_IQCAL_STATUS_B1, - AR_PHY_TX_IQCAL_STATUS_B2, - }; - static const u_int32_t chan_info_tab[] = { - AR_PHY_CHAN_INFO_TAB_0, - AR_PHY_CHAN_INFO_TAB_1, - AR_PHY_CHAN_INFO_TAB_2, - }; - u32 tx_corr_coeff[AR9300_MAX_CHAINS]; - s32 iq_res[6]; - s32 iqc_coeff[2]; - s32 i, j; - u32 num_chains = 0; - - tx_corr_coeff[0] = AR_PHY_TX_IQCAL_CORR_COEFF_B0(0); - tx_corr_coeff[1] = AR_PHY_TX_IQCAL_CORR_COEFF_B1(0); - tx_corr_coeff[2] = AR_PHY_TX_IQCAL_CORR_COEFF_B2(0); - - for (i = 0; i < AR9300_MAX_CHAINS; i++) { - if (ah->txchainmask & (1 << i)) - num_chains++; - } - - REG_RMW_FIELD(ah, AR_PHY_TX_IQCAL_CONTROL_1, - AR_PHY_TX_IQCAQL_CONTROL_1_IQCORR_I_Q_COFF_DELPT, - DELPT); - REG_RMW_FIELD(ah, AR_PHY_TX_IQCAL_START, - AR_PHY_TX_IQCAL_START_DO_CAL, - AR_PHY_TX_IQCAL_START_DO_CAL); - - if (!ath9k_hw_wait(ah, AR_PHY_TX_IQCAL_START, - AR_PHY_TX_IQCAL_START_DO_CAL, - 0, AH_WAIT_TIMEOUT)) { - ath_dbg(common, ATH_DBG_CALIBRATE, - "Tx IQ Cal not complete.\n"); - goto TX_IQ_CAL_FAILED; - } - - for (i = 0; i < num_chains; i++) { - ath_dbg(common, ATH_DBG_CALIBRATE, - "Doing Tx IQ Cal for chain %d.\n", i); - - if (REG_READ(ah, txiqcal_status[i]) & - AR_PHY_TX_IQCAL_STATUS_FAILED) { - ath_dbg(common, ATH_DBG_CALIBRATE, - "Tx IQ Cal failed for chain %d.\n", i); - goto TX_IQ_CAL_FAILED; - } - - for (j = 0; j < 3; j++) { - u_int8_t idx = 2 * j, - offset = 4 * j; - - REG_RMW_FIELD(ah, AR_PHY_CHAN_INFO_MEMORY, - AR_PHY_CHAN_INFO_TAB_S2_READ, 0); - - /* 32 bits */ - iq_res[idx] = REG_READ(ah, chan_info_tab[i] + offset); - - REG_RMW_FIELD(ah, AR_PHY_CHAN_INFO_MEMORY, - AR_PHY_CHAN_INFO_TAB_S2_READ, 1); - - /* 16 bits */ - iq_res[idx+1] = 0xffff & REG_READ(ah, - chan_info_tab[i] + - offset); - - ath_dbg(common, ATH_DBG_CALIBRATE, - "IQ RES[%d]=0x%x IQ_RES[%d]=0x%x\n", - idx, iq_res[idx], idx+1, iq_res[idx+1]); - } - - if (!ar9003_hw_calc_iq_corr(ah, i, iq_res, iqc_coeff)) { - ath_dbg(common, ATH_DBG_CALIBRATE, - "Failed in calculation of IQ correction.\n"); - goto TX_IQ_CAL_FAILED; - } - - ath_dbg(common, ATH_DBG_CALIBRATE, - "IQ_COEFF[0] = 0x%x IQ_COEFF[1] = 0x%x\n", - iqc_coeff[0], iqc_coeff[1]); - - REG_RMW_FIELD(ah, tx_corr_coeff[i], - AR_PHY_TX_IQCAL_CORR_COEFF_01_COEFF_TABLE, - iqc_coeff[0]); - } - - REG_RMW_FIELD(ah, AR_PHY_TX_IQCAL_CONTROL_3, - AR_PHY_TX_IQCAL_CONTROL_3_IQCORR_EN, 0x1); - - return; - -TX_IQ_CAL_FAILED: - ath_dbg(common, ATH_DBG_CALIBRATE, "Tx IQ Cal failed\n"); -} - static bool ar9003_hw_compute_closest_pass_and_avg(int *mp_coeff, int *mp_avg) { int diff[MPASS]; @@ -717,9 +616,9 @@ static bool ar9003_hw_compute_closest_pass_and_avg(int *mp_coeff, int *mp_avg) diff[1] = abs(mp_coeff[1] - mp_coeff[2]); diff[2] = abs(mp_coeff[2] - mp_coeff[0]); - if (diff[0] > MAX_MEASUREMENT && - diff[1] > MAX_MEASUREMENT && - diff[2] > MAX_MEASUREMENT) + if (diff[0] > MAX_DIFFERENCE && + diff[1] > MAX_DIFFERENCE && + diff[2] > MAX_DIFFERENCE) return false; if (diff[0] <= diff[1] && diff[0] <= diff[2]) @@ -817,6 +716,111 @@ disable_txiqcal: ath_dbg(common, ATH_DBG_CALIBRATE, "TX IQ Cal disabled\n"); } +static void ar9003_hw_tx_iq_cal(struct ath_hw *ah) +{ + struct ath_common *common = ath9k_hw_common(ah); + static const u32 txiqcal_status[AR9300_MAX_CHAINS] = { + AR_PHY_TX_IQCAL_STATUS_B0, + AR_PHY_TX_IQCAL_STATUS_B1, + AR_PHY_TX_IQCAL_STATUS_B2, + }; + static const u32 chan_info_tab[] = { + AR_PHY_CHAN_INFO_TAB_0, + AR_PHY_CHAN_INFO_TAB_1, + AR_PHY_CHAN_INFO_TAB_2, + }; + struct coeff coeff; + s32 iq_res[6]; + s32 i, j, ip, im, nmeasurement; + u8 nchains = get_streams(common->tx_chainmask); + + for (ip = 0; ip < MPASS; ip++) { + REG_RMW_FIELD(ah, AR_PHY_TX_IQCAL_CONTROL_1, + AR_PHY_TX_IQCAQL_CONTROL_1_IQCORR_I_Q_COFF_DELPT, + DELPT); + REG_RMW_FIELD(ah, AR_PHY_TX_IQCAL_START, + AR_PHY_TX_IQCAL_START_DO_CAL, + AR_PHY_TX_IQCAL_START_DO_CAL); + + if (!ath9k_hw_wait(ah, AR_PHY_TX_IQCAL_START, + AR_PHY_TX_IQCAL_START_DO_CAL, + 0, AH_WAIT_TIMEOUT)) { + ath_dbg(common, ATH_DBG_CALIBRATE, + "Tx IQ Cal not complete.\n"); + goto TX_IQ_CAL_FAILED; + } + + nmeasurement = REG_READ_FIELD(ah, AR_PHY_TX_IQCAL_STATUS_B0, + AR_PHY_CALIBRATED_GAINS_0); + if (nmeasurement > MAX_MEASUREMENT) + nmeasurement = MAX_MEASUREMENT; + + for (i = 0; i < nchains; i++) { + ath_dbg(common, ATH_DBG_CALIBRATE, + "Doing Tx IQ Cal for chain %d.\n", i); + for (im = 0; im < nmeasurement; im++) { + if (REG_READ(ah, txiqcal_status[i]) & + AR_PHY_TX_IQCAL_STATUS_FAILED) { + ath_dbg(common, ATH_DBG_CALIBRATE, + "Tx IQ Cal failed for chain %d.\n", i); + goto TX_IQ_CAL_FAILED; + } + + for (j = 0; j < 3; j++) { + u8 idx = 2 * j, + offset = 4 * (3 * im + j); + + REG_RMW_FIELD(ah, AR_PHY_CHAN_INFO_MEMORY, + AR_PHY_CHAN_INFO_TAB_S2_READ, + 0); + + /* 32 bits */ + iq_res[idx] = REG_READ(ah, + chan_info_tab[i] + + offset); + + REG_RMW_FIELD(ah, AR_PHY_CHAN_INFO_MEMORY, + AR_PHY_CHAN_INFO_TAB_S2_READ, + 1); + + /* 16 bits */ + iq_res[idx+1] = 0xffff & REG_READ(ah, + chan_info_tab[i] + + offset); + + ath_dbg(common, ATH_DBG_CALIBRATE, + "IQ RES[%d]=0x%x IQ_RES[%d]=0x%x\n", + idx, iq_res[idx], idx+1, iq_res[idx+1]); + } + + if (!ar9003_hw_calc_iq_corr(ah, i, iq_res, + coeff.iqc_coeff)) { + ath_dbg(common, ATH_DBG_CALIBRATE, + "Failed in calculation of IQ correction.\n"); + goto TX_IQ_CAL_FAILED; + } + coeff.mag_coeff[i][im][ip] = + coeff.iqc_coeff[0] & 0x7f; + coeff.phs_coeff[i][im][ip] = + (coeff.iqc_coeff[0] >> 7) & 0x7f; + + if (coeff.mag_coeff[i][im][ip] > 63) + coeff.mag_coeff[i][im][ip] -= 128; + if (coeff.phs_coeff[i][im][ip] > 63) + coeff.phs_coeff[i][im][ip] -= 128; + + } + } + } + + ar9003_hw_tx_iqcal_load_avg_2_passes(ah, nchains, &coeff); + + return; + +TX_IQ_CAL_FAILED: + ath_dbg(common, ATH_DBG_CALIBRATE, "Tx IQ Cal failed\n"); +} + static void ar9003_hw_tx_iq_cal_run(struct ath_hw *ah) { u8 tx_gain_forced; 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