/*
 * Copyright (c) 2010-2011 Atheros Communications Inc.
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include "hw.h"
#include "hw-ops.h"
#include "ar9003_phy.h"
#include "ar9003_rtt.h"
#include "ar9003_mci.h"

#define MAX_MEASUREMENT MAX_IQCAL_MEASUREMENT
#define MAX_MAG_DELTA   11
#define MAX_PHS_DELTA   10
#define MAXIQCAL        3

struct coeff {
        int mag_coeff[AR9300_MAX_CHAINS][MAX_MEASUREMENT][MAXIQCAL];
        int phs_coeff[AR9300_MAX_CHAINS][MAX_MEASUREMENT][MAXIQCAL];
        int iqc_coeff[2];
};

enum ar9003_cal_types {
        IQ_MISMATCH_CAL = BIT(0),
};

static void ar9003_hw_setup_calibration(struct ath_hw *ah,
                                        struct ath9k_cal_list *currCal)
{
        struct ath_common *common = ath9k_hw_common(ah);

        /* Select calibration to run */
        switch (currCal->calData->calType) {
        case IQ_MISMATCH_CAL:
                /*
                 * Start calibration with
                 * 2^(INIT_IQCAL_LOG_COUNT_MAX+1) samples
                 */
                REG_RMW_FIELD(ah, AR_PHY_TIMING4,
                              AR_PHY_TIMING4_IQCAL_LOG_COUNT_MAX,
                              currCal->calData->calCountMax);
                REG_WRITE(ah, AR_PHY_CALMODE, AR_PHY_CALMODE_IQ);

                ath_dbg(common, CALIBRATE,
                        "starting IQ Mismatch Calibration\n");

                /* Kick-off cal */
                REG_SET_BIT(ah, AR_PHY_TIMING4, AR_PHY_TIMING4_DO_CAL);
                break;
        default:
                ath_err(common, "Invalid calibration type\n");
                break;
        }
}

/*
 * Generic calibration routine.
 * Recalibrate the lower PHY chips to account for temperature/environment
 * changes.
 */
static bool ar9003_hw_per_calibration(struct ath_hw *ah,
                                      struct ath9k_channel *ichan,
                                      u8 rxchainmask,
                                      struct ath9k_cal_list *currCal)
{
        struct ath9k_hw_cal_data *caldata = ah->caldata;
        const struct ath9k_percal_data *cur_caldata = currCal->calData;

        /* Calibration in progress. */
        if (currCal->calState == CAL_RUNNING) {
                /* Check to see if it has finished. */
                if (REG_READ(ah, AR_PHY_TIMING4) & AR_PHY_TIMING4_DO_CAL)
                        return false;

                /*
                * Accumulate cal measures for active chains
                */
                cur_caldata->calCollect(ah);
                ah->cal_samples++;

                if (ah->cal_samples >= cur_caldata->calNumSamples) {
                        unsigned int i, numChains = 0;
                        for (i = 0; i < AR9300_MAX_CHAINS; i++) {
                                if (rxchainmask & (1 << i))
                                        numChains++;
                        }

                        /*
                        * Process accumulated data
                        */
                        cur_caldata->calPostProc(ah, numChains);

                        /* Calibration has finished. */
                        caldata->CalValid |= cur_caldata->calType;
                        currCal->calState = CAL_DONE;
                        return true;
                } else {
                        /*
                         * Set-up collection of another sub-sample until we
                         * get desired number
                         */
                        ar9003_hw_setup_calibration(ah, currCal);
                }
        } else if (!(caldata->CalValid & cur_caldata->calType)) {
                /* If current cal is marked invalid in channel, kick it off */
                ath9k_hw_reset_calibration(ah, currCal);
        }

        return false;
}

static int ar9003_hw_calibrate(struct ath_hw *ah, struct ath9k_channel *chan,
                               u8 rxchainmask, bool longcal)
{
        bool iscaldone = true;
        struct ath9k_cal_list *currCal = ah->cal_list_curr;
        int ret;

        /*
         * For given calibration:
         * 1. Call generic cal routine
         * 2. When this cal is done (isCalDone) if we have more cals waiting
         *    (eg after reset), mask this to upper layers by not propagating
         *    isCalDone if it is set to TRUE.
         *    Instead, change isCalDone to FALSE and setup the waiting cal(s)
         *    to be run.
         */
        if (currCal &&
            (currCal->calState == CAL_RUNNING ||
             currCal->calState == CAL_WAITING)) {
                iscaldone = ar9003_hw_per_calibration(ah, chan,
                                                      rxchainmask, currCal);
                if (iscaldone) {
                        ah->cal_list_curr = currCal = currCal->calNext;

                        if (currCal->calState == CAL_WAITING) {
                                iscaldone = false;
                                ath9k_hw_reset_calibration(ah, currCal);
                        }
                }
        }

        /*
         * Do NF cal only at longer intervals. Get the value from
         * the previous NF cal and update history buffer.
         */
        if (longcal && ath9k_hw_getnf(ah, chan)) {
                /*
                 * Load the NF from history buffer of the current channel.
                 * NF is slow time-variant, so it is OK to use a historical
                 * value.
                 */
                ret = ath9k_hw_loadnf(ah, ah->curchan);
                if (ret < 0)
                        return ret;

                /* start NF calibration, without updating BB NF register */
                ath9k_hw_start_nfcal(ah, false);
        }

        return iscaldone;
}

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++) {
                if (ah->txchainmask & BIT(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_dbg(ath9k_hw_common(ah), 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;
        static 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_dbg(common, CALIBRATE,
                        "Starting IQ Cal and Correction for Chain %d\n", i);

                ath_dbg(common, CALIBRATE,
                        "Original: Chn %d iq_corr_meas = 0x%08x\n",
                        i, ah->totalIqCorrMeas[i]);

                iqCorrNeg = 0;

                if (iqCorrMeas > 0x80000000) {
                        iqCorrMeas = (0xffffffff - iqCorrMeas) + 1;
                        iqCorrNeg = 1;
                }

                ath_dbg(common, CALIBRATE, "Chn %d pwr_meas_i = 0x%08x\n",
                        i, powerMeasI);
                ath_dbg(common, CALIBRATE, "Chn %d pwr_meas_q = 0x%08x\n",
                        i, powerMeasQ);
                ath_dbg(common, 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_dbg(common, CALIBRATE, "Chn %d iCoff = 0x%08x\n",
                                i, iCoff);
                        ath_dbg(common, 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_dbg(common, CALIBRATE,
                                "Chn %d : iCoff = 0x%x  qCoff = 0x%x\n",
                                i, iCoff, qCoff);
                        ath_dbg(common, CALIBRATE,
                                "Register offset (0x%04x) before update = 0x%x\n",
                                offset_array[i],
                                REG_READ(ah, offset_array[i]));

                        if (AR_SREV_9565(ah) &&
                            (iCoff == 63 || qCoff == 63 ||
                             iCoff == -63 || qCoff == -63))
                                return;

                        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_dbg(common, 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_dbg(common, 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_dbg(common, 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_dbg(common, 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)
{
        ah->iq_caldata.calData = &iq_cal_single_sample;

        if (AR_SREV_9300_20_OR_LATER(ah)) {
                ah->enabled_cals |= TX_IQ_CAL;
                if (AR_SREV_9485_OR_LATER(ah) && !AR_SREV_9340(ah))
                        ah->enabled_cals |= TX_IQ_ON_AGC_CAL;
        }

        ah->supp_cals = IQ_MISMATCH_CAL;
}

#define OFF_UPPER_LT 24
#define OFF_LOWER_LT 7

static bool ar9003_hw_dynamic_osdac_selection(struct ath_hw *ah,
                                              bool txiqcal_done)
{
        struct ath_common *common = ath9k_hw_common(ah);
        int ch0_done, osdac_ch0, dc_off_ch0_i1, dc_off_ch0_q1, dc_off_ch0_i2,
                dc_off_ch0_q2, dc_off_ch0_i3, dc_off_ch0_q3;
        int ch1_done, osdac_ch1, dc_off_ch1_i1, dc_off_ch1_q1, dc_off_ch1_i2,
                dc_off_ch1_q2, dc_off_ch1_i3, dc_off_ch1_q3;
        int ch2_done, osdac_ch2, dc_off_ch2_i1, dc_off_ch2_q1, dc_off_ch2_i2,
                dc_off_ch2_q2, dc_off_ch2_i3, dc_off_ch2_q3;
        bool status;
        u32 temp, val;

        /*
         * Clear offset and IQ calibration, run AGC cal.
         */
        REG_CLR_BIT(ah, AR_PHY_AGC_CONTROL,
                    AR_PHY_AGC_CONTROL_OFFSET_CAL);
        REG_CLR_BIT(ah, AR_PHY_TX_IQCAL_CONTROL_0,
                    AR_PHY_TX_IQCAL_CONTROL_0_ENABLE_TXIQ_CAL);
        REG_WRITE(ah, AR_PHY_AGC_CONTROL,
                  REG_READ(ah, AR_PHY_AGC_CONTROL) | AR_PHY_AGC_CONTROL_CAL);

        status = ath9k_hw_wait(ah, AR_PHY_AGC_CONTROL,
                               AR_PHY_AGC_CONTROL_CAL,
                               0, AH_WAIT_TIMEOUT);
        if (!status) {
                ath_dbg(common, CALIBRATE,
                        "AGC cal without offset cal failed to complete in 1ms");
                return false;
        }

        /*
         * Allow only offset calibration and disable the others
         * (Carrier Leak calibration, TX Filter calibration and
         *  Peak Detector offset calibration).
         */
        REG_SET_BIT(ah, AR_PHY_AGC_CONTROL,
                    AR_PHY_AGC_CONTROL_OFFSET_CAL);
        REG_CLR_BIT(ah, AR_PHY_CL_CAL_CTL,
                    AR_PHY_CL_CAL_ENABLE);
        REG_CLR_BIT(ah, AR_PHY_AGC_CONTROL,
                    AR_PHY_AGC_CONTROL_FLTR_CAL);
        REG_CLR_BIT(ah, AR_PHY_AGC_CONTROL,
                    AR_PHY_AGC_CONTROL_PKDET_CAL);

        ch0_done = 0;
        ch1_done = 0;
        ch2_done = 0;

        while ((ch0_done == 0) || (ch1_done == 0) || (ch2_done == 0)) {
                osdac_ch0 = (REG_READ(ah, AR_PHY_65NM_CH0_BB1) >> 30) & 0x3;
                osdac_ch1 = (REG_READ(ah, AR_PHY_65NM_CH1_BB1) >> 30) & 0x3;
                osdac_ch2 = (REG_READ(ah, AR_PHY_65NM_CH2_BB1) >> 30) & 0x3;

                REG_SET_BIT(ah, AR_PHY_ACTIVE, AR_PHY_ACTIVE_EN);

                REG_WRITE(ah, AR_PHY_AGC_CONTROL,
                          REG_READ(ah, AR_PHY_AGC_CONTROL) | AR_PHY_AGC_CONTROL_CAL);

                status = ath9k_hw_wait(ah, AR_PHY_AGC_CONTROL,
                                       AR_PHY_AGC_CONTROL_CAL,
                                       0, AH_WAIT_TIMEOUT);
                if (!status) {
                        ath_dbg(common, CALIBRATE,
                                "DC offset cal failed to complete in 1ms");
                        return false;
                }

                REG_CLR_BIT(ah, AR_PHY_ACTIVE, AR_PHY_ACTIVE_EN);

                /*
                 * High gain.
                 */
                REG_WRITE(ah, AR_PHY_65NM_CH0_BB3,
                          ((REG_READ(ah, AR_PHY_65NM_CH0_BB3) & 0xfffffcff) | (1 << 8)));
                REG_WRITE(ah, AR_PHY_65NM_CH1_BB3,
                          ((REG_READ(ah, AR_PHY_65NM_CH1_BB3) & 0xfffffcff) | (1 << 8)));
                REG_WRITE(ah, AR_PHY_65NM_CH2_BB3,
                          ((REG_READ(ah, AR_PHY_65NM_CH2_BB3) & 0xfffffcff) | (1 << 8)));

                temp = REG_READ(ah, AR_PHY_65NM_CH0_BB3);
                dc_off_ch0_i1 = (temp >> 26) & 0x1f;
                dc_off_ch0_q1 = (temp >> 21) & 0x1f;

                temp = REG_READ(ah, AR_PHY_65NM_CH1_BB3);
                dc_off_ch1_i1 = (temp >> 26) & 0x1f;
                dc_off_ch1_q1 = (temp >> 21) & 0x1f;

                temp = REG_READ(ah, AR_PHY_65NM_CH2_BB3);
                dc_off_ch2_i1 = (temp >> 26) & 0x1f;
                dc_off_ch2_q1 = (temp >> 21) & 0x1f;

                /*
                 * Low gain.
                 */
                REG_WRITE(ah, AR_PHY_65NM_CH0_BB3,
                          ((REG_READ(ah, AR_PHY_65NM_CH0_BB3) & 0xfffffcff) | (2 << 8)));
                REG_WRITE(ah, AR_PHY_65NM_CH1_BB3,
                          ((REG_READ(ah, AR_PHY_65NM_CH1_BB3) & 0xfffffcff) | (2 << 8)));
                REG_WRITE(ah, AR_PHY_65NM_CH2_BB3,
                          ((REG_READ(ah, AR_PHY_65NM_CH2_BB3) & 0xfffffcff) | (2 << 8)));

                temp = REG_READ(ah, AR_PHY_65NM_CH0_BB3);
                dc_off_ch0_i2 = (temp >> 26) & 0x1f;
                dc_off_ch0_q2 = (temp >> 21) & 0x1f;

                temp = REG_READ(ah, AR_PHY_65NM_CH1_BB3);
                dc_off_ch1_i2 = (temp >> 26) & 0x1f;
                dc_off_ch1_q2 = (temp >> 21) & 0x1f;

                temp = REG_READ(ah, AR_PHY_65NM_CH2_BB3);
                dc_off_ch2_i2 = (temp >> 26) & 0x1f;
                dc_off_ch2_q2 = (temp >> 21) & 0x1f;

                /*
                 * Loopback.
                 */
                REG_WRITE(ah, AR_PHY_65NM_CH0_BB3,
                          ((REG_READ(ah, AR_PHY_65NM_CH0_BB3) & 0xfffffcff) | (3 << 8)));
                REG_WRITE(ah, AR_PHY_65NM_CH1_BB3,
                          ((REG_READ(ah, AR_PHY_65NM_CH1_BB3) & 0xfffffcff) | (3 << 8)));
                REG_WRITE(ah, AR_PHY_65NM_CH2_BB3,
                          ((REG_READ(ah, AR_PHY_65NM_CH2_BB3) & 0xfffffcff) | (3 << 8)));

                temp = REG_READ(ah, AR_PHY_65NM_CH0_BB3);
                dc_off_ch0_i3 = (temp >> 26) & 0x1f;
                dc_off_ch0_q3 = (temp >> 21) & 0x1f;

                temp = REG_READ(ah, AR_PHY_65NM_CH1_BB3);
                dc_off_ch1_i3 = (temp >> 26) & 0x1f;
                dc_off_ch1_q3 = (temp >> 21) & 0x1f;

                temp = REG_READ(ah, AR_PHY_65NM_CH2_BB3);
                dc_off_ch2_i3 = (temp >> 26) & 0x1f;
                dc_off_ch2_q3 = (temp >> 21) & 0x1f;

                if ((dc_off_ch0_i1 > OFF_UPPER_LT) || (dc_off_ch0_i1 < OFF_LOWER_LT) ||
                    (dc_off_ch0_i2 > OFF_UPPER_LT) || (dc_off_ch0_i2 < OFF_LOWER_LT) ||
                    (dc_off_ch0_i3 > OFF_UPPER_LT) || (dc_off_ch0_i3 < OFF_LOWER_LT) ||
                    (dc_off_ch0_q1 > OFF_UPPER_LT) || (dc_off_ch0_q1 < OFF_LOWER_LT) ||
                    (dc_off_ch0_q2 > OFF_UPPER_LT) || (dc_off_ch0_q2 < OFF_LOWER_LT) ||
                    (dc_off_ch0_q3 > OFF_UPPER_LT) || (dc_off_ch0_q3 < OFF_LOWER_LT)) {
                        if (osdac_ch0 == 3) {
                                ch0_done = 1;
                        } else {
                                osdac_ch0++;

                                val = REG_READ(ah, AR_PHY_65NM_CH0_BB1) & 0x3fffffff;
                                val |= (osdac_ch0 << 30);
                                REG_WRITE(ah, AR_PHY_65NM_CH0_BB1, val);

                                ch0_done = 0;
                        }
                } else {
                        ch0_done = 1;
                }

                if ((dc_off_ch1_i1 > OFF_UPPER_LT) || (dc_off_ch1_i1 < OFF_LOWER_LT) ||
                    (dc_off_ch1_i2 > OFF_UPPER_LT) || (dc_off_ch1_i2 < OFF_LOWER_LT) ||
                    (dc_off_ch1_i3 > OFF_UPPER_LT) || (dc_off_ch1_i3 < OFF_LOWER_LT) ||
                    (dc_off_ch1_q1 > OFF_UPPER_LT) || (dc_off_ch1_q1 < OFF_LOWER_LT) ||
                    (dc_off_ch1_q2 > OFF_UPPER_LT) || (dc_off_ch1_q2 < OFF_LOWER_LT) ||
                    (dc_off_ch1_q3 > OFF_UPPER_LT) || (dc_off_ch1_q3 < OFF_LOWER_LT)) {
                        if (osdac_ch1 == 3) {
                                ch1_done = 1;
                        } else {
                                osdac_ch1++;

                                val = REG_READ(ah, AR_PHY_65NM_CH1_BB1) & 0x3fffffff;
                                val |= (osdac_ch1 << 30);
                                REG_WRITE(ah, AR_PHY_65NM_CH1_BB1, val);

                                ch1_done = 0;
                        }
                } else {
                        ch1_done = 1;
                }

                if ((dc_off_ch2_i1 > OFF_UPPER_LT) || (dc_off_ch2_i1 < OFF_LOWER_LT) ||
                    (dc_off_ch2_i2 > OFF_UPPER_LT) || (dc_off_ch2_i2 < OFF_LOWER_LT) ||
                    (dc_off_ch2_i3 > OFF_UPPER_LT) || (dc_off_ch2_i3 < OFF_LOWER_LT) ||
                    (dc_off_ch2_q1 > OFF_UPPER_LT) || (dc_off_ch2_q1 < OFF_LOWER_LT) ||
                    (dc_off_ch2_q2 > OFF_UPPER_LT) || (dc_off_ch2_q2 < OFF_LOWER_LT) ||
                    (dc_off_ch2_q3 > OFF_UPPER_LT) || (dc_off_ch2_q3 < OFF_LOWER_LT)) {
                        if (osdac_ch2 == 3) {
                                ch2_done = 1;
                        } else {
                                osdac_ch2++;

                                val = REG_READ(ah, AR_PHY_65NM_CH2_BB1) & 0x3fffffff;
                                val |= (osdac_ch2 << 30);
                                REG_WRITE(ah, AR_PHY_65NM_CH2_BB1, val);

                                ch2_done = 0;
                        }
                } else {
                        ch2_done = 1;
                }
        }

        REG_CLR_BIT(ah, AR_PHY_AGC_CONTROL,
                    AR_PHY_AGC_CONTROL_OFFSET_CAL);
        REG_SET_BIT(ah, AR_PHY_ACTIVE, AR_PHY_ACTIVE_EN);

        /*
         * We don't need to check txiqcal_done here since it is always
         * set for AR9550.
         */
        REG_SET_BIT(ah, AR_PHY_TX_IQCAL_CONTROL_0,
                    AR_PHY_TX_IQCAL_CONTROL_0_ENABLE_TXIQ_CAL);

        return true;
}

/*
 * solve 4x4 linear equation used in loopback iq cal.
 */
static bool ar9003_hw_solve_iq_cal(struct ath_hw *ah,
                                   s32 sin_2phi_1,
                                   s32 cos_2phi_1,
                                   s32 sin_2phi_2,
                                   s32 cos_2phi_2,
                                   s32 mag_a0_d0,
                                   s32 phs_a0_d0,
                                   s32 mag_a1_d0,
                                   s32 phs_a1_d0,
                                   s32 solved_eq[])
{
        s32 f1 = cos_2phi_1 - cos_2phi_2,
            f3 = sin_2phi_1 - sin_2phi_2,
            f2;
        s32 mag_tx, phs_tx, mag_rx, phs_rx;
        const s32 result_shift = 1 << 15;
        struct ath_common *common = ath9k_hw_common(ah);

        f2 = ((f1 >> 3) * (f1 >> 3) + (f3 >> 3) * (f3 >> 3)) >> 9;

        if (!f2) {
                ath_dbg(common, CALIBRATE, "Divide by 0\n");
                return false;
        }

        /* mag mismatch, tx */
        mag_tx = f1 * (mag_a0_d0  - mag_a1_d0) + f3 * (phs_a0_d0 - phs_a1_d0);
        /* phs mismatch, tx */
        phs_tx = f3 * (-mag_a0_d0 + mag_a1_d0) + f1 * (phs_a0_d0 - phs_a1_d0);

        mag_tx = (mag_tx / f2);
        phs_tx = (phs_tx / f2);

        /* mag mismatch, rx */
        mag_rx = mag_a0_d0 - (cos_2phi_1 * mag_tx + sin_2phi_1 * phs_tx) /
                 result_shift;
        /* phs mismatch, rx */
        phs_rx = phs_a0_d0 + (sin_2phi_1 * mag_tx - cos_2phi_1 * phs_tx) /
                 result_shift;

        solved_eq[0] = mag_tx;
        solved_eq[1] = phs_tx;
        solved_eq[2] = mag_rx;
        solved_eq[3] = phs_rx;

        return true;
}

static s32 ar9003_hw_find_mag_approx(struct ath_hw *ah, s32 in_re, s32 in_im)
{
        s32 abs_i = abs(in_re),
            abs_q = abs(in_im),
            max_abs, min_abs;

        if (abs_i > abs_q) {
                max_abs = abs_i;
                min_abs = abs_q;
        } else {
                max_abs = abs_q;
                min_abs = abs_i;
        }

        return max_abs - (max_abs / 32) + (min_abs / 8) + (min_abs / 4);
}

#define DELPT 32

static bool ar9003_hw_calc_iq_corr(struct ath_hw *ah,
                                   s32 chain_idx,
                                   const s32 iq_res[],
                                   s32 iqc_coeff[])
{
        s32 i2_m_q2_a0_d0, i2_p_q2_a0_d0, iq_corr_a0_d0,
            i2_m_q2_a0_d1, i2_p_q2_a0_d1, iq_corr_a0_d1,
            i2_m_q2_a1_d0, i2_p_q2_a1_d0, iq_corr_a1_d0,
            i2_m_q2_a1_d1, i2_p_q2_a1_d1, iq_corr_a1_d1;
        s32 mag_a0_d0, mag_a1_d0, mag_a0_d1, mag_a1_d1,
            phs_a0_d0, phs_a1_d0, phs_a0_d1, phs_a1_d1,
            sin_2phi_1, cos_2phi_1,
            sin_2phi_2, cos_2phi_2;
        s32 mag_tx, phs_tx, mag_rx, phs_rx;
        s32 solved_eq[4], mag_corr_tx, phs_corr_tx, mag_corr_rx, phs_corr_rx,
            q_q_coff, q_i_coff;
        const s32 res_scale = 1 << 15;
        const s32 delpt_shift = 1 << 8;
        s32 mag1, mag2;
        struct ath_common *common = ath9k_hw_common(ah);

        i2_m_q2_a0_d0 = iq_res[0] & 0xfff;
        i2_p_q2_a0_d0 = (iq_res[0] >> 12) & 0xfff;
        iq_corr_a0_d0 = ((iq_res[0] >> 24) & 0xff) + ((iq_res[1] & 0xf) << 8);

        if (i2_m_q2_a0_d0 > 0x800)
                i2_m_q2_a0_d0 = -((0xfff - i2_m_q2_a0_d0) + 1);

        if (i2_p_q2_a0_d0 > 0x800)
                i2_p_q2_a0_d0 = -((0xfff - i2_p_q2_a0_d0) + 1);

        if (iq_corr_a0_d0 > 0x800)
                iq_corr_a0_d0 = -((0xfff - iq_corr_a0_d0) + 1);

        i2_m_q2_a0_d1 = (iq_res[1] >> 4) & 0xfff;
        i2_p_q2_a0_d1 = (iq_res[2] & 0xfff);
        iq_corr_a0_d1 = (iq_res[2] >> 12) & 0xfff;

        if (i2_m_q2_a0_d1 > 0x800)
                i2_m_q2_a0_d1 = -((0xfff - i2_m_q2_a0_d1) + 1);

        if (iq_corr_a0_d1 > 0x800)
                iq_corr_a0_d1 = -((0xfff - iq_corr_a0_d1) + 1);

        i2_m_q2_a1_d0 = ((iq_res[2] >> 24) & 0xff) + ((iq_res[3] & 0xf) << 8);
        i2_p_q2_a1_d0 = (iq_res[3] >> 4) & 0xfff;
        iq_corr_a1_d0 = iq_res[4] & 0xfff;

        if (i2_m_q2_a1_d0 > 0x800)
                i2_m_q2_a1_d0 = -((0xfff - i2_m_q2_a1_d0) + 1);

        if (i2_p_q2_a1_d0 > 0x800)
                i2_p_q2_a1_d0 = -((0xfff - i2_p_q2_a1_d0) + 1);

        if (iq_corr_a1_d0 > 0x800)
                iq_corr_a1_d0 = -((0xfff - iq_corr_a1_d0) + 1);

        i2_m_q2_a1_d1 = (iq_res[4] >> 12) & 0xfff;
        i2_p_q2_a1_d1 = ((iq_res[4] >> 24) & 0xff) + ((iq_res[5] & 0xf) << 8);
        iq_corr_a1_d1 = (iq_res[5] >> 4) & 0xfff;

        if (i2_m_q2_a1_d1 > 0x800)
                i2_m_q2_a1_d1 = -((0xfff - i2_m_q2_a1_d1) + 1);

        if (i2_p_q2_a1_d1 > 0x800)
                i2_p_q2_a1_d1 = -((0xfff - i2_p_q2_a1_d1) + 1);

        if (iq_corr_a1_d1 > 0x800)
                iq_corr_a1_d1 = -((0xfff - iq_corr_a1_d1) + 1);

        if ((i2_p_q2_a0_d0 == 0) || (i2_p_q2_a0_d1 == 0) ||
            (i2_p_q2_a1_d0 == 0) || (i2_p_q2_a1_d1 == 0)) {
                ath_dbg(common, CALIBRATE,
                        "Divide by 0:\n"
                        "a0_d0=%d\n"
                        "a0_d1=%d\n"
                        "a2_d0=%d\n"
                        "a1_d1=%d\n",
                        i2_p_q2_a0_d0, i2_p_q2_a0_d1,
                        i2_p_q2_a1_d0, i2_p_q2_a1_d1);
                return false;
        }

        if ((i2_p_q2_a0_d0 < 1024) || (i2_p_q2_a0_d0 > 2047) ||
            (i2_p_q2_a1_d0 < 0) || (i2_p_q2_a1_d1 < 0) ||
            (i2_p_q2_a0_d0 <= i2_m_q2_a0_d0) ||
            (i2_p_q2_a0_d0 <= iq_corr_a0_d0) ||
            (i2_p_q2_a0_d1 <= i2_m_q2_a0_d1) ||
            (i2_p_q2_a0_d1 <= iq_corr_a0_d1) ||
            (i2_p_q2_a1_d0 <= i2_m_q2_a1_d0) ||
            (i2_p_q2_a1_d0 <= iq_corr_a1_d0) ||
            (i2_p_q2_a1_d1 <= i2_m_q2_a1_d1) ||
            (i2_p_q2_a1_d1 <= iq_corr_a1_d1)) {
                return false;
        }

        mag_a0_d0 = (i2_m_q2_a0_d0 * res_scale) / i2_p_q2_a0_d0;
        phs_a0_d0 = (iq_corr_a0_d0 * res_scale) / i2_p_q2_a0_d0;

        mag_a0_d1 = (i2_m_q2_a0_d1 * res_scale) / i2_p_q2_a0_d1;
        phs_a0_d1 = (iq_corr_a0_d1 * res_scale) / i2_p_q2_a0_d1;

        mag_a1_d0 = (i2_m_q2_a1_d0 * res_scale) / i2_p_q2_a1_d0;
        phs_a1_d0 = (iq_corr_a1_d0 * res_scale) / i2_p_q2_a1_d0;

        mag_a1_d1 = (i2_m_q2_a1_d1 * res_scale) / i2_p_q2_a1_d1;
        phs_a1_d1 = (iq_corr_a1_d1 * res_scale) / i2_p_q2_a1_d1;

        /* w/o analog phase shift */
        sin_2phi_1 = (((mag_a0_d0 - mag_a0_d1) * delpt_shift) / DELPT);
        /* w/o analog phase shift */
        cos_2phi_1 = (((phs_a0_d1 - phs_a0_d0) * delpt_shift) / DELPT);
        /* w/  analog phase shift */
        sin_2phi_2 = (((mag_a1_d0 - mag_a1_d1) * delpt_shift) / DELPT);
        /* w/  analog phase shift */
        cos_2phi_2 = (((phs_a1_d1 - phs_a1_d0) * delpt_shift) / DELPT);

        /*
         * force sin^2 + cos^2 = 1;
         * find magnitude by approximation
         */
        mag1 = ar9003_hw_find_mag_approx(ah, cos_2phi_1, sin_2phi_1);
        mag2 = ar9003_hw_find_mag_approx(ah, cos_2phi_2, sin_2phi_2);

        if ((mag1 == 0) || (mag2 == 0)) {
                ath_dbg(common, CALIBRATE, "Divide by 0: mag1=%d, mag2=%d\n",
                        mag1, mag2);
                return false;
        }

        /* normalization sin and cos by mag */
        sin_2phi_1 = (sin_2phi_1 * res_scale / mag1);
        cos_2phi_1 = (cos_2phi_1 * res_scale / mag1);
        sin_2phi_2 = (sin_2phi_2 * res_scale / mag2);
        cos_2phi_2 = (cos_2phi_2 * res_scale / mag2);

        /* calculate IQ mismatch */
        if (!ar9003_hw_solve_iq_cal(ah,
                             sin_2phi_1, cos_2phi_1,
                             sin_2phi_2, cos_2phi_2,
                             mag_a0_d0, phs_a0_d0,
                             mag_a1_d0,
                             phs_a1_d0, solved_eq)) {
                ath_dbg(common, CALIBRATE,
                        "Call to ar9003_hw_solve_iq_cal() failed\n");
                return false;
        }

        mag_tx = solved_eq[0];
        phs_tx = solved_eq[1];
        mag_rx = solved_eq[2];
        phs_rx = solved_eq[3];

        ath_dbg(common, CALIBRATE,
                "chain %d: mag mismatch=%d phase mismatch=%d\n",
                chain_idx, mag_tx/res_scale, phs_tx/res_scale);

        if (res_scale == mag_tx) {
                ath_dbg(common, CALIBRATE,
                        "Divide by 0: mag_tx=%d, res_scale=%d\n",
                        mag_tx, res_scale);
                return false;
        }

        /* calculate and quantize Tx IQ correction factor */
        mag_corr_tx = (mag_tx * res_scale) / (res_scale - mag_tx);
        phs_corr_tx = -phs_tx;

        q_q_coff = (mag_corr_tx * 128 / res_scale);
        q_i_coff = (phs_corr_tx * 256 / res_scale);

        ath_dbg(common, CALIBRATE, "tx chain %d: mag corr=%d  phase corr=%d\n",
                chain_idx, q_q_coff, q_i_coff);

        if (q_i_coff < -63)
                q_i_coff = -63;
        if (q_i_coff > 63)
                q_i_coff = 63;
        if (q_q_coff < -63)
                q_q_coff = -63;
        if (q_q_coff > 63)
                q_q_coff = 63;

        iqc_coeff[0] = (q_q_coff * 128) + (0x7f & q_i_coff);

        ath_dbg(common, CALIBRATE, "tx chain %d: iq corr coeff=%x\n",
                chain_idx, iqc_coeff[0]);

        if (-mag_rx == res_scale) {
                ath_dbg(common, CALIBRATE,
                        "Divide by 0: mag_rx=%d, res_scale=%d\n",
                        mag_rx, res_scale);
                return false;
        }

        /* calculate and quantize Rx IQ correction factors */
        mag_corr_rx = (-mag_rx * res_scale) / (res_scale + mag_rx);
        phs_corr_rx = -phs_rx;

        q_q_coff = (mag_corr_rx * 128 / res_scale);
        q_i_coff = (phs_corr_rx * 256 / res_scale);

        ath_dbg(common, CALIBRATE, "rx chain %d: mag corr=%d  phase corr=%d\n",
                chain_idx, q_q_coff, q_i_coff);

        if (q_i_coff < -63)
                q_i_coff = -63;
        if (q_i_coff > 63)
                q_i_coff = 63;
        if (q_q_coff < -63)
                q_q_coff = -63;
        if (q_q_coff > 63)
                q_q_coff = 63;

        iqc_coeff[1] = (q_q_coff * 128) + (0x7f & q_i_coff);

        ath_dbg(common, CALIBRATE, "rx chain %d: iq corr coeff=%x\n",
                chain_idx, iqc_coeff[1]);

        return true;
}

static void ar9003_hw_detect_outlier(int mp_coeff[][MAXIQCAL],
                                     int nmeasurement,
                                     int max_delta)
{
        int mp_max = -64, max_idx = 0;
        int mp_min = 63, min_idx = 0;
        int mp_avg = 0, i, outlier_idx = 0, mp_count = 0;

        /* find min/max mismatch across all calibrated gains */
        for (i = 0; i < nmeasurement; i++) {
                if (mp_coeff[i][0] > mp_max) {
                        mp_max = mp_coeff[i][0];
                        max_idx = 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][0]) < abs(mp_max)) ||
                    (abs(mp_coeff[i][0]) < abs(mp_min))) {
                        mp_avg += mp_coeff[i][0];
                        mp_count++;
                }
        }

        /*
         * finding mean magnitude/phase if possible, otherwise
         * just use the last value as the mean
         */
        if (mp_count)
                mp_avg /= mp_count;
        else
                mp_avg = mp_coeff[nmeasurement - 1][0];

        /* detect outlier */
        if (abs(mp_max - mp_min) > max_delta) {
                if (abs(mp_max - mp_avg) > abs(mp_min - mp_avg))
                        outlier_idx = max_idx;
                else
                        outlier_idx = min_idx;

                mp_coeff[outlier_idx][0] = mp_avg;
        }
}

static void ar9003_hw_tx_iq_cal_outlier_detection(struct ath_hw *ah,
                                                  struct coeff *coeff,
                                                  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;

        memset(tx_corr_coeff, 0, sizeof(tx_corr_coeff));
        for (i = 0; i < MAX_MEASUREMENT / 2; i++) {
                tx_corr_coeff[i * 2][0] = tx_corr_coeff[(i * 2) + 1][0] =
                                        AR_PHY_TX_IQCAL_CORR_COEFF_B0(i);
                if (!AR_SREV_9485(ah)) {
                        tx_corr_coeff[i * 2][1] =
                        tx_corr_coeff[(i * 2) + 1][1] =
                                        AR_PHY_TX_IQCAL_CORR_COEFF_B1(i);

                        tx_corr_coeff[i * 2][2] =
                        tx_corr_coeff[(i * 2) + 1][2] =
                                        AR_PHY_TX_IQCAL_CORR_COEFF_B2(i);
                }
        }

        /* Load the average of 2 passes */
        for (i = 0; i < AR9300_MAX_CHAINS; i++) {
                if (!(ah->txchainmask & (1 << i)))
                        continue;
                nmeasurement = REG_READ_FIELD(ah,
                                AR_PHY_TX_IQCAL_STATUS_B0,
                                AR_PHY_CALIBRATED_GAINS_0);

                if (nmeasurement > MAX_MEASUREMENT)
                        nmeasurement = MAX_MEASUREMENT;

                /*
                 * Skip normal outlier detection for AR9550.
                 */
                if (!AR_SREV_9550(ah)) {
                        /* detect outlier only if nmeasurement > 1 */
                        if (nmeasurement > 1) {
                                /* Detect magnitude outlier */
                                ar9003_hw_detect_outlier(coeff->mag_coeff[i],
                                                         nmeasurement,
                                                         MAX_MAG_DELTA);

                                /* Detect phase outlier */
                                ar9003_hw_detect_outlier(coeff->phs_coeff[i],
                                                         nmeasurement,
                                                         MAX_PHS_DELTA);
                        }
                }

                for (im = 0; im < nmeasurement; im++) {
                        magnitude = coeff->mag_coeff[i][im][0];
                        phase = coeff->phs_coeff[i][im][0];

                        coeff->iqc_coeff[0] =
                                (phase & 0x7f) | ((magnitude & 0x7f) << 7);

                        if ((im % 2) == 0)
                                REG_RMW_FIELD(ah, tx_corr_coeff[im][i],
                                        AR_PHY_TX_IQCAL_CORR_COEFF_00_COEFF_TABLE,
                                        coeff->iqc_coeff[0]);
                        else
                                REG_RMW_FIELD(ah, tx_corr_coeff[im][i],
                                        AR_PHY_TX_IQCAL_CORR_COEFF_01_COEFF_TABLE,
                                        coeff->iqc_coeff[0]);

                        if (caldata)
                                caldata->tx_corr_coeff[im][i] =
                                        coeff->iqc_coeff[0];
                }
                if (caldata)
                        caldata->num_measures[i] = nmeasurement;
        }

        REG_RMW_FIELD(ah, AR_PHY_TX_IQCAL_CONTROL_3,
                      AR_PHY_TX_IQCAL_CONTROL_3_IQCORR_EN, 0x1);
        REG_RMW_FIELD(ah, AR_PHY_RX_IQCAL_CORR_B0,
                      AR_PHY_RX_IQCAL_CORR_B0_LOOPBACK_IQCORR_EN, 0x1);

        if (caldata) {
                if (is_reusable)
                        set_bit(TXIQCAL_DONE, &caldata->cal_flags);
                else
                        clear_bit(TXIQCAL_DONE, &caldata->cal_flags);
        }

        return;
}

static bool ar9003_hw_tx_iq_cal_run(struct ath_hw *ah)
{
        struct ath_common *common = ath9k_hw_common(ah);
        u8 tx_gain_forced;

        tx_gain_forced = REG_READ_FIELD(ah, AR_PHY_TX_FORCED_GAIN,
                                        AR_PHY_TXGAIN_FORCE);
        if (tx_gain_forced)
                REG_RMW_FIELD(ah, AR_PHY_TX_FORCED_GAIN,
                              AR_PHY_TXGAIN_FORCE, 0);

        REG_RMW_FIELD(ah, AR_PHY_TX_IQCAL_START,
                      AR_PHY_TX_IQCAL_START_DO_CAL, 1);

        if (!ath9k_hw_wait(ah, AR_PHY_TX_IQCAL_START,
                        AR_PHY_TX_IQCAL_START_DO_CAL, 0,
                        AH_WAIT_TIMEOUT)) {
                ath_dbg(common, CALIBRATE, "Tx IQ Cal is not completed\n");
                return false;
        }
        return true;

}

static void __ar955x_tx_iq_cal_sort(struct ath_hw *ah,
                                    struct coeff *coeff,
                                    int i, int nmeasurement)
{
        struct ath_common *common = ath9k_hw_common(ah);
        int im, ix, iy, temp;

        for (im = 0; im < nmeasurement; im++) {
                for (ix = 0; ix < MAXIQCAL - 1; ix++) {
                        for (iy = ix + 1; iy <= MAXIQCAL - 1; iy++) {
                                if (coeff->mag_coeff[i][im][iy] <
                                    coeff->mag_coeff[i][im][ix]) {
                                        temp = coeff->mag_coeff[i][im][ix];
                                        coeff->mag_coeff[i][im][ix] =
                                                coeff->mag_coeff[i][im][iy];
                                        coeff->mag_coeff[i][im][iy] = temp;
                                }
                                if (coeff->phs_coeff[i][im][iy] <
                                    coeff->phs_coeff[i][im][ix]) {
                                        temp = coeff->phs_coeff[i][im][ix];
                                        coeff->phs_coeff[i][im][ix] =
                                                coeff->phs_coeff[i][im][iy];
                                        coeff->phs_coeff[i][im][iy] = temp;
                                }
                        }
                }
                coeff->mag_coeff[i][im][0] = coeff->mag_coeff[i][im][MAXIQCAL / 2];
                coeff->phs_coeff[i][im][0] = coeff->phs_coeff[i][im][MAXIQCAL / 2];

                ath_dbg(common, CALIBRATE,
                        "IQCAL: Median [ch%d][gain%d]: mag = %d phase = %d\n",
                        i, im,
                        coeff->mag_coeff[i][im][0],
                        coeff->phs_coeff[i][im][0]);
        }
}

static bool ar955x_tx_iq_cal_median(struct ath_hw *ah,
                                    struct coeff *coeff,
                                    int iqcal_idx,
                                    int nmeasurement)
{
        int i;

        if ((iqcal_idx + 1) != MAXIQCAL)
                return false;

        for (i = 0; i < AR9300_MAX_CHAINS; i++) {
                __ar955x_tx_iq_cal_sort(ah, coeff, i, nmeasurement);
        }

        return true;
}

static void ar9003_hw_tx_iq_cal_post_proc(struct ath_hw *ah,
                                          int iqcal_idx,
                                          bool is_reusable)
{
        struct ath_common *common = ath9k_hw_common(ah);
        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,
        };
        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,
        };
        static struct coeff coeff;
        s32 iq_res[6];
        int i, im, j;
        int nmeasurement = 0;
        bool outlier_detect = true;

        for (i = 0; i < AR9300_MAX_CHAINS; i++) {
                if (!(ah->txchainmask & (1 << i)))
                        continue;

                nmeasurement = REG_READ_FIELD(ah,
                                AR_PHY_TX_IQCAL_STATUS_B0,
                                AR_PHY_CALIBRATED_GAINS_0);
                if (nmeasurement > MAX_MEASUREMENT)
                        nmeasurement = MAX_MEASUREMENT;

                for (im = 0; im < nmeasurement; im++) {
                        ath_dbg(common, 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, CALIBRATE,
                                        "Tx IQ Cal failed for chain %d\n", i);
                                goto tx_iqcal_fail;
                        }

                        for (j = 0; j < 3; j++) {
                                u32 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, 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, CALIBRATE,
                                        "Failed in calculation of IQ correction\n");
                                goto tx_iqcal_fail;
                        }

                        coeff.phs_coeff[i][im][iqcal_idx] =
                                coeff.iqc_coeff[0] & 0x7f;
                        coeff.mag_coeff[i][im][iqcal_idx] =
                                (coeff.iqc_coeff[0] >> 7) & 0x7f;

                        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;
                }
        }

        if (AR_SREV_9550(ah))
                outlier_detect = ar955x_tx_iq_cal_median(ah, &coeff,
                                                         iqcal_idx, nmeasurement);
        if (outlier_detect)
                ar9003_hw_tx_iq_cal_outlier_detection(ah, &coeff, is_reusable);

        return;

tx_iqcal_fail:
        ath_dbg(common, CALIBRATE, "Tx IQ Cal failed\n");
        return;
}

static void ar9003_hw_tx_iq_cal_reload(struct ath_hw *ah)
{
        struct ath9k_hw_cal_data *caldata = ah->caldata;
        u32 tx_corr_coeff[MAX_MEASUREMENT][AR9300_MAX_CHAINS];
        int i, im;

        memset(tx_corr_coeff, 0, sizeof(tx_corr_coeff));
        for (i = 0; i < MAX_MEASUREMENT / 2; i++) {
                tx_corr_coeff[i * 2][0] = tx_corr_coeff[(i * 2) + 1][0] =
                                        AR_PHY_TX_IQCAL_CORR_COEFF_B0(i);
                if (!AR_SREV_9485(ah)) {
                        tx_corr_coeff[i * 2][1] =
                        tx_corr_coeff[(i * 2) + 1][1] =
                                        AR_PHY_TX_IQCAL_CORR_COEFF_B1(i);

                        tx_corr_coeff[i * 2][2] =
                        tx_corr_coeff[(i * 2) + 1][2] =
                                        AR_PHY_TX_IQCAL_CORR_COEFF_B2(i);
                }
        }

        for (i = 0; i < AR9300_MAX_CHAINS; i++) {
                if (!(ah->txchainmask & (1 << i)))
                        continue;

                for (im = 0; im < caldata->num_measures[i]; im++) {
                        if ((im % 2) == 0)
                                REG_RMW_FIELD(ah, tx_corr_coeff[im][i],
                                     AR_PHY_TX_IQCAL_CORR_COEFF_00_COEFF_TABLE,
                                     caldata->tx_corr_coeff[im][i]);
                        else
                                REG_RMW_FIELD(ah, tx_corr_coeff[im][i],
                                     AR_PHY_TX_IQCAL_CORR_COEFF_01_COEFF_TABLE,
                                     caldata->tx_corr_coeff[im][i]);
                }
        }

        REG_RMW_FIELD(ah, AR_PHY_TX_IQCAL_CONTROL_3,
                      AR_PHY_TX_IQCAL_CONTROL_3_IQCORR_EN, 0x1);
        REG_RMW_FIELD(ah, AR_PHY_RX_IQCAL_CORR_B0,
                      AR_PHY_RX_IQCAL_CORR_B0_LOOPBACK_IQCORR_EN, 0x1);
}

static void ar9003_hw_manual_peak_cal(struct ath_hw *ah, u8 chain, bool is_2g)
{
        int offset[8] = {0}, total = 0, test;
        int agc_out, i, peak_detect_threshold = 0;

        if (AR_SREV_9550(ah) || AR_SREV_9531(ah))
                peak_detect_threshold = 8;
        else if (AR_SREV_9561(ah))
                peak_detect_threshold = 11;

        /*
         * Turn off LNA/SW.
         */
        REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_GAINSTAGES(chain),
                      AR_PHY_65NM_RXRF_GAINSTAGES_RX_OVERRIDE, 0x1);
        REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_GAINSTAGES(chain),
                      AR_PHY_65NM_RXRF_GAINSTAGES_LNAON_CALDC, 0x0);

        if (AR_SREV_9003_PCOEM(ah) || AR_SREV_9330_11(ah)) {
                if (is_2g)
                        REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_GAINSTAGES(chain),
                                      AR_PHY_65NM_RXRF_GAINSTAGES_LNA2G_GAIN_OVR, 0x0);
                else
                        REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_GAINSTAGES(chain),
                                      AR_PHY_65NM_RXRF_GAINSTAGES_LNA5G_GAIN_OVR, 0x0);
        }

        /*
         * Turn off RXON.
         */
        REG_RMW_FIELD(ah, AR_PHY_65NM_RXTX2(chain),
                      AR_PHY_65NM_RXTX2_RXON_OVR, 0x1);
        REG_RMW_FIELD(ah, AR_PHY_65NM_RXTX2(chain),
                      AR_PHY_65NM_RXTX2_RXON, 0x0);

        /*
         * Turn on AGC for cal.
         */
        REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_AGC(chain),
                      AR_PHY_65NM_RXRF_AGC_AGC_OVERRIDE, 0x1);
        REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_AGC(chain),
                      AR_PHY_65NM_RXRF_AGC_AGC_ON_OVR, 0x1);
        REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_AGC(chain),
                      AR_PHY_65NM_RXRF_AGC_AGC_CAL_OVR, 0x1);

        if (AR_SREV_9330_11(ah))
                REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_AGC(chain),
                              AR_PHY_65NM_RXRF_AGC_AGC2G_CALDAC_OVR, 0x0);

        if (is_2g)
                REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_AGC(chain),
                              AR_PHY_65NM_RXRF_AGC_AGC2G_DBDAC_OVR,
                              peak_detect_threshold);
        else
                REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_AGC(chain),
                              AR_PHY_65NM_RXRF_AGC_AGC5G_DBDAC_OVR,
                              peak_detect_threshold);

        for (i = 6; i > 0; i--) {
                offset[i] = BIT(i - 1);
                test = total + offset[i];

                if (is_2g)
                        REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_AGC(chain),
                                      AR_PHY_65NM_RXRF_AGC_AGC2G_CALDAC_OVR,
                                      test);
                else
                        REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_AGC(chain),
                                      AR_PHY_65NM_RXRF_AGC_AGC5G_CALDAC_OVR,
                                      test);
                udelay(100);
                agc_out = REG_READ_FIELD(ah, AR_PHY_65NM_RXRF_AGC(chain),
                                         AR_PHY_65NM_RXRF_AGC_AGC_OUT);
                offset[i] = (agc_out) ? 0 : 1;
                total += (offset[i] << (i - 1));
        }

        if (is_2g)
                REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_AGC(chain),
                              AR_PHY_65NM_RXRF_AGC_AGC2G_CALDAC_OVR, total);
        else
                REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_AGC(chain),
                              AR_PHY_65NM_RXRF_AGC_AGC5G_CALDAC_OVR, total);

        /*
         * Turn on LNA.
         */
        REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_GAINSTAGES(chain),
                      AR_PHY_65NM_RXRF_GAINSTAGES_RX_OVERRIDE, 0);
        /*
         * Turn off RXON.
         */
        REG_RMW_FIELD(ah, AR_PHY_65NM_RXTX2(chain),
                      AR_PHY_65NM_RXTX2_RXON_OVR, 0);
        /*
         * Turn off peak detect calibration.
         */
        REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_AGC(chain),
                      AR_PHY_65NM_RXRF_AGC_AGC_CAL_OVR, 0);
}

static void ar9003_hw_do_pcoem_manual_peak_cal(struct ath_hw *ah,
                                               struct ath9k_channel *chan,
                                               bool run_rtt_cal)
{
        struct ath9k_hw_cal_data *caldata = ah->caldata;
        int i;

        if ((ah->caps.hw_caps & ATH9K_HW_CAP_RTT) && !run_rtt_cal)
                return;

        for (i = 0; i < AR9300_MAX_CHAINS; i++) {
                if (!(ah->rxchainmask & (1 << i)))
                        continue;
                ar9003_hw_manual_peak_cal(ah, i, IS_CHAN_2GHZ(chan));
        }

        if (caldata)
                set_bit(SW_PKDET_DONE, &caldata->cal_flags);

        if ((ah->caps.hw_caps & ATH9K_HW_CAP_RTT) && caldata) {
                if (IS_CHAN_2GHZ(chan)){
                        caldata->caldac[0] = REG_READ_FIELD(ah,
                                                    AR_PHY_65NM_RXRF_AGC(0),
                                                    AR_PHY_65NM_RXRF_AGC_AGC2G_CALDAC_OVR);
                        caldata->caldac[1] = REG_READ_FIELD(ah,
                                                    AR_PHY_65NM_RXRF_AGC(1),
                                                    AR_PHY_65NM_RXRF_AGC_AGC2G_CALDAC_OVR);
                } else {
                        caldata->caldac[0] = REG_READ_FIELD(ah,
                                                    AR_PHY_65NM_RXRF_AGC(0),
                                                    AR_PHY_65NM_RXRF_AGC_AGC5G_CALDAC_OVR);
                        caldata->caldac[1] = REG_READ_FIELD(ah,
                                                    AR_PHY_65NM_RXRF_AGC(1),
                                                    AR_PHY_65NM_RXRF_AGC_AGC5G_CALDAC_OVR);
                }
        }
}

static void ar9003_hw_cl_cal_post_proc(struct ath_hw *ah, bool is_reusable)
{
        u32 cl_idx[AR9300_MAX_CHAINS] = { AR_PHY_CL_TAB_0,
                                          AR_PHY_CL_TAB_1,
                                          AR_PHY_CL_TAB_2 };
        struct ath9k_hw_cal_data *caldata = ah->caldata;
        bool txclcal_done = false;
        int i, j;

        if (!caldata || !(ah->enabled_cals & TX_CL_CAL))
                return;

        txclcal_done = !!(REG_READ(ah, AR_PHY_AGC_CONTROL) &
                          AR_PHY_AGC_CONTROL_CLC_SUCCESS);

        if (test_bit(TXCLCAL_DONE, &caldata->cal_flags)) {
                for (i = 0; i < AR9300_MAX_CHAINS; i++) {
                        if (!(ah->txchainmask & (1 << i)))
                                continue;
                        for (j = 0; j < MAX_CL_TAB_ENTRY; j++)
                                REG_WRITE(ah, CL_TAB_ENTRY(cl_idx[i]),
                                          caldata->tx_clcal[i][j]);
                }
        } else if (is_reusable && txclcal_done) {
                for (i = 0; i < AR9300_MAX_CHAINS; i++) {
                        if (!(ah->txchainmask & (1 << i)))
                                continue;
                        for (j = 0; j < MAX_CL_TAB_ENTRY; j++)
                                caldata->tx_clcal[i][j] =
                                        REG_READ(ah, CL_TAB_ENTRY(cl_idx[i]));
                }
                set_bit(TXCLCAL_DONE, &caldata->cal_flags);
        }
}

static void ar9003_hw_init_cal_common(struct ath_hw *ah)
{
        struct ath9k_hw_cal_data *caldata = ah->caldata;

        /* Initialize list pointers */
        ah->cal_list = ah->cal_list_last = ah->cal_list_curr = NULL;

        INIT_CAL(&ah->iq_caldata);
        INSERT_CAL(ah, &ah->iq_caldata);

        /* Initialize current pointer to first element in list */
        ah->cal_list_curr = ah->cal_list;

        if (ah->cal_list_curr)
                ath9k_hw_reset_calibration(ah, ah->cal_list_curr);

        if (caldata)
                caldata->CalValid = 0;
}

static bool ar9003_hw_init_cal_pcoem(struct ath_hw *ah,
                                     struct ath9k_channel *chan)
{
        struct ath_common *common = ath9k_hw_common(ah);
        struct ath9k_hw_cal_data *caldata = ah->caldata;
        bool txiqcal_done = false;
        bool is_reusable = true, status = true;
        bool run_rtt_cal = false, run_agc_cal;
        bool rtt = !!(ah->caps.hw_caps & ATH9K_HW_CAP_RTT);
        u32 rx_delay = 0;
        u32 agc_ctrl = 0, agc_supp_cals = AR_PHY_AGC_CONTROL_OFFSET_CAL |
                                          AR_PHY_AGC_CONTROL_FLTR_CAL   |
                                          AR_PHY_AGC_CONTROL_PKDET_CAL;

        /* Use chip chainmask only for calibration */
        ar9003_hw_set_chain_masks(ah, ah->caps.rx_chainmask, ah->caps.tx_chainmask);

        if (rtt) {
                if (!ar9003_hw_rtt_restore(ah, chan))
                        run_rtt_cal = true;

                if (run_rtt_cal)
                        ath_dbg(common, CALIBRATE, "RTT calibration to be done\n");
        }

        run_agc_cal = run_rtt_cal;

        if (run_rtt_cal) {
                ar9003_hw_rtt_enable(ah);
                ar9003_hw_rtt_set_mask(ah, 0x00);
                ar9003_hw_rtt_clear_hist(ah);
        }

        if (rtt) {
                if (!run_rtt_cal) {
                        agc_ctrl = REG_READ(ah, AR_PHY_AGC_CONTROL);
                        agc_supp_cals &= agc_ctrl;
                        agc_ctrl &= ~(AR_PHY_AGC_CONTROL_OFFSET_CAL |
                                      AR_PHY_AGC_CONTROL_FLTR_CAL |
                                      AR_PHY_AGC_CONTROL_PKDET_CAL);
                        REG_WRITE(ah, AR_PHY_AGC_CONTROL, agc_ctrl);
                } else {
                        if (ah->ah_flags & AH_FASTCC)
                                run_agc_cal = true;
                }
        }

        if (ah->enabled_cals & TX_CL_CAL) {
                if (caldata && test_bit(TXCLCAL_DONE, &caldata->cal_flags))
                        REG_CLR_BIT(ah, AR_PHY_CL_CAL_CTL,
                                    AR_PHY_CL_CAL_ENABLE);
                else {
                        REG_SET_BIT(ah, AR_PHY_CL_CAL_CTL,
                                    AR_PHY_CL_CAL_ENABLE);
                        run_agc_cal = true;
                }
        }

        if ((IS_CHAN_HALF_RATE(chan) || IS_CHAN_QUARTER_RATE(chan)) ||
            !(ah->enabled_cals & TX_IQ_CAL))
                goto skip_tx_iqcal;

        /* Do Tx IQ Calibration */
        REG_RMW_FIELD(ah, AR_PHY_TX_IQCAL_CONTROL_1,
                      AR_PHY_TX_IQCAL_CONTROL_1_IQCORR_I_Q_COFF_DELPT,
                      DELPT);

        /*
         * For AR9485 or later chips, TxIQ cal runs as part of
         * AGC calibration
         */
        if (ah->enabled_cals & TX_IQ_ON_AGC_CAL) {
                if (caldata && !test_bit(TXIQCAL_DONE, &caldata->cal_flags))
                        REG_SET_BIT(ah, AR_PHY_TX_IQCAL_CONTROL_0,
                                    AR_PHY_TX_IQCAL_CONTROL_0_ENABLE_TXIQ_CAL);
                else
                        REG_CLR_BIT(ah, AR_PHY_TX_IQCAL_CONTROL_0,
                                    AR_PHY_TX_IQCAL_CONTROL_0_ENABLE_TXIQ_CAL);
                txiqcal_done = run_agc_cal = true;
        }

skip_tx_iqcal:
        if (ath9k_hw_mci_is_enabled(ah) && IS_CHAN_2GHZ(chan) && run_agc_cal)
                ar9003_mci_init_cal_req(ah, &is_reusable);

        if (REG_READ(ah, AR_PHY_CL_CAL_CTL) & AR_PHY_CL_CAL_ENABLE) {
                rx_delay = REG_READ(ah, AR_PHY_RX_DELAY);
                /* Disable BB_active */
                REG_WRITE(ah, AR_PHY_ACTIVE, AR_PHY_ACTIVE_DIS);
                udelay(5);
                REG_WRITE(ah, AR_PHY_RX_DELAY, AR_PHY_RX_DELAY_DELAY);
                REG_WRITE(ah, AR_PHY_ACTIVE, AR_PHY_ACTIVE_EN);
        }

        if (run_agc_cal || !(ah->ah_flags & AH_FASTCC)) {
                /* Calibrate the AGC */
                REG_WRITE(ah, AR_PHY_AGC_CONTROL,
                          REG_READ(ah, AR_PHY_AGC_CONTROL) |
                          AR_PHY_AGC_CONTROL_CAL);

                /* Poll for offset calibration complete */
                status = ath9k_hw_wait(ah, AR_PHY_AGC_CONTROL,
                                       AR_PHY_AGC_CONTROL_CAL,
                                       0, AH_WAIT_TIMEOUT);

                ar9003_hw_do_pcoem_manual_peak_cal(ah, chan, run_rtt_cal);
        }

        if (REG_READ(ah, AR_PHY_CL_CAL_CTL) & AR_PHY_CL_CAL_ENABLE) {
                REG_WRITE(ah, AR_PHY_RX_DELAY, rx_delay);
                udelay(5);
        }

        if (ath9k_hw_mci_is_enabled(ah) && IS_CHAN_2GHZ(chan) && run_agc_cal)
                ar9003_mci_init_cal_done(ah);

        if (rtt && !run_rtt_cal) {
                agc_ctrl |= agc_supp_cals;
                REG_WRITE(ah, AR_PHY_AGC_CONTROL, agc_ctrl);
        }

        if (!status) {
                if (run_rtt_cal)
                        ar9003_hw_rtt_disable(ah);

                ath_dbg(common, CALIBRATE,
                        "offset calibration failed to complete in %d ms; noisy environment?\n",
                        AH_WAIT_TIMEOUT / 1000);
                return false;
        }

        if (txiqcal_done)
                ar9003_hw_tx_iq_cal_post_proc(ah, 0, is_reusable);
        else if (caldata && test_bit(TXIQCAL_DONE, &caldata->cal_flags))
                ar9003_hw_tx_iq_cal_reload(ah);

        ar9003_hw_cl_cal_post_proc(ah, is_reusable);

        if (run_rtt_cal && caldata) {
                if (is_reusable) {
                        if (!ath9k_hw_rfbus_req(ah)) {
                                ath_err(ath9k_hw_common(ah),
                                        "Could not stop baseband\n");
                        } else {
                                ar9003_hw_rtt_fill_hist(ah);

                                if (test_bit(SW_PKDET_DONE, &caldata->cal_flags))
                                        ar9003_hw_rtt_load_hist(ah);
                        }

                        ath9k_hw_rfbus_done(ah);
                }

                ar9003_hw_rtt_disable(ah);
        }

        /* Revert chainmask to runtime parameters */
        ar9003_hw_set_chain_masks(ah, ah->rxchainmask, ah->txchainmask);

        ar9003_hw_init_cal_common(ah);

        return true;
}

static bool do_ar9003_agc_cal(struct ath_hw *ah)
{
        struct ath_common *common = ath9k_hw_common(ah);
        bool status;

        REG_WRITE(ah, AR_PHY_AGC_CONTROL,
                  REG_READ(ah, AR_PHY_AGC_CONTROL) |
                  AR_PHY_AGC_CONTROL_CAL);

        status = ath9k_hw_wait(ah, AR_PHY_AGC_CONTROL,
                               AR_PHY_AGC_CONTROL_CAL,
                               0, AH_WAIT_TIMEOUT);
        if (!status) {
                ath_dbg(common, CALIBRATE,
                        "offset calibration failed to complete in %d ms,"
                        "noisy environment?\n",
                        AH_WAIT_TIMEOUT / 1000);
                return false;
        }

        return true;
}

static bool ar9003_hw_init_cal_soc(struct ath_hw *ah,
                                   struct ath9k_channel *chan)
{
        bool txiqcal_done = false;
        bool status = true;
        bool run_agc_cal = false, sep_iq_cal = false;
        int i = 0;

        /* Use chip chainmask only for calibration */
        ar9003_hw_set_chain_masks(ah, ah->caps.rx_chainmask, ah->caps.tx_chainmask);

        if (ah->enabled_cals & TX_CL_CAL) {
                REG_SET_BIT(ah, AR_PHY_CL_CAL_CTL, AR_PHY_CL_CAL_ENABLE);
                run_agc_cal = true;
        }

        if (IS_CHAN_HALF_RATE(chan) || IS_CHAN_QUARTER_RATE(chan))
                goto skip_tx_iqcal;

        /* Do Tx IQ Calibration */
        REG_RMW_FIELD(ah, AR_PHY_TX_IQCAL_CONTROL_1,
                      AR_PHY_TX_IQCAL_CONTROL_1_IQCORR_I_Q_COFF_DELPT,
                      DELPT);

        /*
         * For AR9485 or later chips, TxIQ cal runs as part of
         * AGC calibration. Specifically, AR9550 in SoC chips.
         */
        if (ah->enabled_cals & TX_IQ_ON_AGC_CAL) {
                if (REG_READ_FIELD(ah, AR_PHY_TX_IQCAL_CONTROL_0,
                                   AR_PHY_TX_IQCAL_CONTROL_0_ENABLE_TXIQ_CAL)) {
                                txiqcal_done = true;
                } else {
                        txiqcal_done = false;
                }
                run_agc_cal = true;
        } else {
                sep_iq_cal = true;
                run_agc_cal = true;
        }

        /*
         * In the SoC family, this will run for AR9300, AR9331 and AR9340.
         */
        if (sep_iq_cal) {
                txiqcal_done = ar9003_hw_tx_iq_cal_run(ah);
                REG_WRITE(ah, AR_PHY_ACTIVE, AR_PHY_ACTIVE_DIS);
                udelay(5);
                REG_WRITE(ah, AR_PHY_ACTIVE, AR_PHY_ACTIVE_EN);
        }

        if (AR_SREV_9550(ah) && IS_CHAN_2GHZ(chan)) {
                if (!ar9003_hw_dynamic_osdac_selection(ah, txiqcal_done))
                        return false;
        }

skip_tx_iqcal:
        if (run_agc_cal || !(ah->ah_flags & AH_FASTCC)) {
                for (i = 0; i < AR9300_MAX_CHAINS; i++) {
                        if (!(ah->rxchainmask & (1 << i)))
                                continue;

                        ar9003_hw_manual_peak_cal(ah, i,
                                                  IS_CHAN_2GHZ(chan));
                }

                /*
                 * For non-AR9550 chips, we just trigger AGC calibration
                 * in the HW, poll for completion and then process
                 * the results.
                 *
                 * For AR955x, we run it multiple times and use
                 * median IQ correction.
                 */
                if (!AR_SREV_9550(ah)) {
                        status = do_ar9003_agc_cal(ah);
                        if (!status)
                                return false;

                        if (txiqcal_done)
                                ar9003_hw_tx_iq_cal_post_proc(ah, 0, false);
                } else {
                        if (!txiqcal_done) {
                                status = do_ar9003_agc_cal(ah);
                                if (!status)
                                        return false;
                        } else {
                                for (i = 0; i < MAXIQCAL; i++) {
                                        status = do_ar9003_agc_cal(ah);
                                        if (!status)
                                                return false;
                                        ar9003_hw_tx_iq_cal_post_proc(ah, i, false);
                                }
                        }
                }
        }

        /* Revert chainmask to runtime parameters */
        ar9003_hw_set_chain_masks(ah, ah->rxchainmask, ah->txchainmask);

        ar9003_hw_init_cal_common(ah);

        return true;
}

void ar9003_hw_attach_calib_ops(struct ath_hw *ah)
{
        struct ath_hw_private_ops *priv_ops = ath9k_hw_private_ops(ah);
        struct ath_hw_ops *ops = ath9k_hw_ops(ah);

        if (AR_SREV_9003_PCOEM(ah))
                priv_ops->init_cal = ar9003_hw_init_cal_pcoem;
        else
                priv_ops->init_cal = ar9003_hw_init_cal_soc;

        priv_ops->init_cal_settings = ar9003_hw_init_cal_settings;
        priv_ops->setup_calibration = ar9003_hw_setup_calibration;

        ops->calibrate = ar9003_hw_calibrate;
}