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linux-zen-server/drivers/net/wireless/ath/ath9k/ar9002_calib.c

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/*
* Copyright (c) 2008-2011 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 "ar9002_phy.h"
#define AR9285_CLCAL_REDO_THRESH 1
/* AGC & I/Q calibrations time limit, ms */
#define AR9002_CAL_MAX_TIME 30000
enum ar9002_cal_types {
ADC_GAIN_CAL = BIT(0),
ADC_DC_CAL = BIT(1),
IQ_MISMATCH_CAL = BIT(2),
};
static bool ar9002_hw_is_cal_supported(struct ath_hw *ah,
struct ath9k_channel *chan,
enum ar9002_cal_types cal_type)
{
bool supported = false;
switch (ah->supp_cals & cal_type) {
case IQ_MISMATCH_CAL:
supported = true;
break;
case ADC_GAIN_CAL:
case ADC_DC_CAL:
/* Run even/odd ADCs calibrations for HT40 channels only */
if (IS_CHAN_HT40(chan))
supported = true;
break;
}
return supported;
}
static void ar9002_hw_setup_calibration(struct ath_hw *ah,
struct ath9k_cal_list *currCal)
{
struct ath_common *common = ath9k_hw_common(ah);
REG_RMW_FIELD(ah, AR_PHY_TIMING_CTRL4(0),
AR_PHY_TIMING_CTRL4_IQCAL_LOG_COUNT_MAX,
currCal->calData->calCountMax);
switch (currCal->calData->calType) {
case IQ_MISMATCH_CAL:
REG_WRITE(ah, AR_PHY_CALMODE, AR_PHY_CALMODE_IQ);
ath_dbg(common, CALIBRATE,
"starting IQ Mismatch Calibration\n");
break;
case ADC_GAIN_CAL:
REG_WRITE(ah, AR_PHY_CALMODE, AR_PHY_CALMODE_ADC_GAIN);
ath_dbg(common, CALIBRATE, "starting ADC Gain Calibration\n");
break;
case ADC_DC_CAL:
REG_WRITE(ah, AR_PHY_CALMODE, AR_PHY_CALMODE_ADC_DC_PER);
ath_dbg(common, CALIBRATE, "starting ADC DC Calibration\n");
break;
}
REG_SET_BIT(ah, AR_PHY_TIMING_CTRL4(0),
AR_PHY_TIMING_CTRL4_DO_CAL);
}
static bool ar9002_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;
bool iscaldone = false;
if (currCal->calState == CAL_RUNNING) {
if (!(REG_READ(ah, AR_PHY_TIMING_CTRL4(0)) &
AR_PHY_TIMING_CTRL4_DO_CAL)) {
currCal->calData->calCollect(ah);
ah->cal_samples++;
if (ah->cal_samples >=
currCal->calData->calNumSamples) {
int i, numChains = 0;
for (i = 0; i < AR5416_MAX_CHAINS; i++) {
if (rxchainmask & (1 << i))
numChains++;
}
currCal->calData->calPostProc(ah, numChains);
caldata->CalValid |= currCal->calData->calType;
currCal->calState = CAL_DONE;
iscaldone = true;
} else {
ar9002_hw_setup_calibration(ah, currCal);
}
} else if (time_after(jiffies, ah->cal_start_time +
msecs_to_jiffies(AR9002_CAL_MAX_TIME))) {
REG_CLR_BIT(ah, AR_PHY_TIMING_CTRL4(0),
AR_PHY_TIMING_CTRL4_DO_CAL);
ath_dbg(ath9k_hw_common(ah), CALIBRATE,
"calibration timeout\n");
currCal->calState = CAL_WAITING; /* Try later */
iscaldone = true;
}
} else if (!(caldata->CalValid & currCal->calData->calType)) {
ath9k_hw_reset_calibration(ah, currCal);
}
return iscaldone;
}
static void ar9002_hw_iqcal_collect(struct ath_hw *ah)
{
int i;
for (i = 0; i < AR5416_MAX_CHAINS; 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 ar9002_hw_adc_gaincal_collect(struct ath_hw *ah)
{
int i;
for (i = 0; i < AR5416_MAX_CHAINS; i++) {
ah->totalAdcIOddPhase[i] +=
REG_READ(ah, AR_PHY_CAL_MEAS_0(i));
ah->totalAdcIEvenPhase[i] +=
REG_READ(ah, AR_PHY_CAL_MEAS_1(i));
ah->totalAdcQOddPhase[i] +=
REG_READ(ah, AR_PHY_CAL_MEAS_2(i));
ah->totalAdcQEvenPhase[i] +=
REG_READ(ah, AR_PHY_CAL_MEAS_3(i));
ath_dbg(ath9k_hw_common(ah), CALIBRATE,
"%d: Chn %d oddi=0x%08x; eveni=0x%08x; oddq=0x%08x; evenq=0x%08x;\n",
ah->cal_samples, i,
ah->totalAdcIOddPhase[i],
ah->totalAdcIEvenPhase[i],
ah->totalAdcQOddPhase[i],
ah->totalAdcQEvenPhase[i]);
}
}
static void ar9002_hw_adc_dccal_collect(struct ath_hw *ah)
{
int i;
for (i = 0; i < AR5416_MAX_CHAINS; i++) {
ah->totalAdcDcOffsetIOddPhase[i] +=
(int32_t) REG_READ(ah, AR_PHY_CAL_MEAS_0(i));
ah->totalAdcDcOffsetIEvenPhase[i] +=
(int32_t) REG_READ(ah, AR_PHY_CAL_MEAS_1(i));
ah->totalAdcDcOffsetQOddPhase[i] +=
(int32_t) REG_READ(ah, AR_PHY_CAL_MEAS_2(i));
ah->totalAdcDcOffsetQEvenPhase[i] +=
(int32_t) REG_READ(ah, AR_PHY_CAL_MEAS_3(i));
ath_dbg(ath9k_hw_common(ah), CALIBRATE,
"%d: Chn %d oddi=0x%08x; eveni=0x%08x; oddq=0x%08x; evenq=0x%08x;\n",
ah->cal_samples, i,
ah->totalAdcDcOffsetIOddPhase[i],
ah->totalAdcDcOffsetIEvenPhase[i],
ah->totalAdcDcOffsetQOddPhase[i],
ah->totalAdcDcOffsetQEvenPhase[i]);
}
}
static void ar9002_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;
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) / 128;
qCoffDenom = powerMeasQ / 64;
if ((powerMeasQ != 0) && (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);
iCoff = iCoff & 0x3f;
ath_dbg(common, CALIBRATE,
"New: Chn %d iCoff = 0x%08x\n", i, iCoff);
if (iqCorrNeg == 0x0)
iCoff = 0x40 - iCoff;
if (qCoff > 15)
qCoff = 15;
else if (qCoff <= -16)
qCoff = -16;
ath_dbg(common, CALIBRATE,
"Chn %d : iCoff = 0x%x qCoff = 0x%x\n",
i, iCoff, qCoff);
REG_RMW_FIELD(ah, AR_PHY_TIMING_CTRL4(i),
AR_PHY_TIMING_CTRL4_IQCORR_Q_I_COFF,
iCoff);
REG_RMW_FIELD(ah, AR_PHY_TIMING_CTRL4(i),
AR_PHY_TIMING_CTRL4_IQCORR_Q_Q_COFF,
qCoff);
ath_dbg(common, CALIBRATE,
"IQ Cal and Correction done for Chain %d\n",
i);
}
}
REG_SET_BIT(ah, AR_PHY_TIMING_CTRL4(0),
AR_PHY_TIMING_CTRL4_IQCORR_ENABLE);
}
static void ar9002_hw_adc_gaincal_calibrate(struct ath_hw *ah, u8 numChains)
{
struct ath_common *common = ath9k_hw_common(ah);
u32 iOddMeasOffset, iEvenMeasOffset, qOddMeasOffset, qEvenMeasOffset;
u32 qGainMismatch, iGainMismatch, val, i;
for (i = 0; i < numChains; i++) {
iOddMeasOffset = ah->totalAdcIOddPhase[i];
iEvenMeasOffset = ah->totalAdcIEvenPhase[i];
qOddMeasOffset = ah->totalAdcQOddPhase[i];
qEvenMeasOffset = ah->totalAdcQEvenPhase[i];
ath_dbg(common, CALIBRATE,
"Starting ADC Gain Cal for Chain %d\n", i);
ath_dbg(common, CALIBRATE, "Chn %d pwr_meas_odd_i = 0x%08x\n",
i, iOddMeasOffset);
ath_dbg(common, CALIBRATE, "Chn %d pwr_meas_even_i = 0x%08x\n",
i, iEvenMeasOffset);
ath_dbg(common, CALIBRATE, "Chn %d pwr_meas_odd_q = 0x%08x\n",
i, qOddMeasOffset);
ath_dbg(common, CALIBRATE, "Chn %d pwr_meas_even_q = 0x%08x\n",
i, qEvenMeasOffset);
if (iOddMeasOffset != 0 && qEvenMeasOffset != 0) {
iGainMismatch =
((iEvenMeasOffset * 32) /
iOddMeasOffset) & 0x3f;
qGainMismatch =
((qOddMeasOffset * 32) /
qEvenMeasOffset) & 0x3f;
ath_dbg(common, CALIBRATE,
"Chn %d gain_mismatch_i = 0x%08x\n",
i, iGainMismatch);
ath_dbg(common, CALIBRATE,
"Chn %d gain_mismatch_q = 0x%08x\n",
i, qGainMismatch);
val = REG_READ(ah, AR_PHY_NEW_ADC_DC_GAIN_CORR(i));
val &= 0xfffff000;
val |= (qGainMismatch) | (iGainMismatch << 6);
REG_WRITE(ah, AR_PHY_NEW_ADC_DC_GAIN_CORR(i), val);
ath_dbg(common, CALIBRATE,
"ADC Gain Cal done for Chain %d\n", i);
}
}
REG_WRITE(ah, AR_PHY_NEW_ADC_DC_GAIN_CORR(0),
REG_READ(ah, AR_PHY_NEW_ADC_DC_GAIN_CORR(0)) |
AR_PHY_NEW_ADC_GAIN_CORR_ENABLE);
}
static void ar9002_hw_adc_dccal_calibrate(struct ath_hw *ah, u8 numChains)
{
struct ath_common *common = ath9k_hw_common(ah);
u32 iOddMeasOffset, iEvenMeasOffset, val, i;
int32_t qOddMeasOffset, qEvenMeasOffset, qDcMismatch, iDcMismatch;
const struct ath9k_percal_data *calData =
ah->cal_list_curr->calData;
u32 numSamples =
(1 << (calData->calCountMax + 5)) * calData->calNumSamples;
for (i = 0; i < numChains; i++) {
iOddMeasOffset = ah->totalAdcDcOffsetIOddPhase[i];
iEvenMeasOffset = ah->totalAdcDcOffsetIEvenPhase[i];
qOddMeasOffset = ah->totalAdcDcOffsetQOddPhase[i];
qEvenMeasOffset = ah->totalAdcDcOffsetQEvenPhase[i];
ath_dbg(common, CALIBRATE,
"Starting ADC DC Offset Cal for Chain %d\n", i);
ath_dbg(common, CALIBRATE, "Chn %d pwr_meas_odd_i = %d\n",
i, iOddMeasOffset);
ath_dbg(common, CALIBRATE, "Chn %d pwr_meas_even_i = %d\n",
i, iEvenMeasOffset);
ath_dbg(common, CALIBRATE, "Chn %d pwr_meas_odd_q = %d\n",
i, qOddMeasOffset);
ath_dbg(common, CALIBRATE, "Chn %d pwr_meas_even_q = %d\n",
i, qEvenMeasOffset);
iDcMismatch = (((iEvenMeasOffset - iOddMeasOffset) * 2) /
numSamples) & 0x1ff;
qDcMismatch = (((qOddMeasOffset - qEvenMeasOffset) * 2) /
numSamples) & 0x1ff;
ath_dbg(common, CALIBRATE,
"Chn %d dc_offset_mismatch_i = 0x%08x\n",
i, iDcMismatch);
ath_dbg(common, CALIBRATE,
"Chn %d dc_offset_mismatch_q = 0x%08x\n",
i, qDcMismatch);
val = REG_READ(ah, AR_PHY_NEW_ADC_DC_GAIN_CORR(i));
val &= 0xc0000fff;
val |= (qDcMismatch << 12) | (iDcMismatch << 21);
REG_WRITE(ah, AR_PHY_NEW_ADC_DC_GAIN_CORR(i), val);
ath_dbg(common, CALIBRATE,
"ADC DC Offset Cal done for Chain %d\n", i);
}
REG_WRITE(ah, AR_PHY_NEW_ADC_DC_GAIN_CORR(0),
REG_READ(ah, AR_PHY_NEW_ADC_DC_GAIN_CORR(0)) |
AR_PHY_NEW_ADC_DC_OFFSET_CORR_ENABLE);
}
static void ar9287_hw_olc_temp_compensation(struct ath_hw *ah)
{
u32 rddata;
int32_t delta, currPDADC, slope;
rddata = REG_READ(ah, AR_PHY_TX_PWRCTRL4);
currPDADC = MS(rddata, AR_PHY_TX_PWRCTRL_PD_AVG_OUT);
if (ah->initPDADC == 0 || currPDADC == 0) {
/*
* Zero value indicates that no frames have been transmitted
* yet, can't do temperature compensation until frames are
* transmitted.
*/
return;
} else {
slope = ah->eep_ops->get_eeprom(ah, EEP_TEMPSENSE_SLOPE);
if (slope == 0) { /* to avoid divide by zero case */
delta = 0;
} else {
delta = ((currPDADC - ah->initPDADC)*4) / slope;
}
REG_RMW_FIELD(ah, AR_PHY_CH0_TX_PWRCTRL11,
AR_PHY_TX_PWRCTRL_OLPC_TEMP_COMP, delta);
REG_RMW_FIELD(ah, AR_PHY_CH1_TX_PWRCTRL11,
AR_PHY_TX_PWRCTRL_OLPC_TEMP_COMP, delta);
}
}
static void ar9280_hw_olc_temp_compensation(struct ath_hw *ah)
{
u32 rddata, i;
int delta, currPDADC, regval;
rddata = REG_READ(ah, AR_PHY_TX_PWRCTRL4);
currPDADC = MS(rddata, AR_PHY_TX_PWRCTRL_PD_AVG_OUT);
if (ah->initPDADC == 0 || currPDADC == 0)
return;
if (ah->eep_ops->get_eeprom(ah, EEP_DAC_HPWR_5G))
delta = (currPDADC - ah->initPDADC + 4) / 8;
else
delta = (currPDADC - ah->initPDADC + 5) / 10;
if (delta != ah->PDADCdelta) {
ah->PDADCdelta = delta;
for (i = 1; i < AR9280_TX_GAIN_TABLE_SIZE; i++) {
regval = ah->originalGain[i] - delta;
if (regval < 0)
regval = 0;
REG_RMW_FIELD(ah,
AR_PHY_TX_GAIN_TBL1 + i * 4,
AR_PHY_TX_GAIN, regval);
}
}
}
static void ar9271_hw_pa_cal(struct ath_hw *ah, bool is_reset)
{
u32 regVal;
unsigned int i;
u32 regList[][2] = {
{ AR9285_AN_TOP3, 0 },
{ AR9285_AN_RXTXBB1, 0 },
{ AR9285_AN_RF2G1, 0 },
{ AR9285_AN_RF2G2, 0 },
{ AR9285_AN_TOP2, 0 },
{ AR9285_AN_RF2G8, 0 },
{ AR9285_AN_RF2G7, 0 },
{ AR9285_AN_RF2G3, 0 },
};
REG_READ_ARRAY(ah, regList, ARRAY_SIZE(regList));
ENABLE_REG_RMW_BUFFER(ah);
/* 7834, b1=0 */
REG_CLR_BIT(ah, AR9285_AN_RF2G6, 1 << 0);
/* 9808, b27=1 */
REG_SET_BIT(ah, 0x9808, 1 << 27);
/* 786c,b23,1, pwddac=1 */
REG_SET_BIT(ah, AR9285_AN_TOP3, AR9285_AN_TOP3_PWDDAC);
/* 7854, b5,1, pdrxtxbb=1 */
REG_SET_BIT(ah, AR9285_AN_RXTXBB1, AR9285_AN_RXTXBB1_PDRXTXBB1);
/* 7854, b7,1, pdv2i=1 */
REG_SET_BIT(ah, AR9285_AN_RXTXBB1, AR9285_AN_RXTXBB1_PDV2I);
/* 7854, b8,1, pddacinterface=1 */
REG_SET_BIT(ah, AR9285_AN_RXTXBB1, AR9285_AN_RXTXBB1_PDDACIF);
/* 7824,b12,0, offcal=0 */
REG_CLR_BIT(ah, AR9285_AN_RF2G2, AR9285_AN_RF2G2_OFFCAL);
/* 7838, b1,0, pwddb=0 */
REG_CLR_BIT(ah, AR9285_AN_RF2G7, AR9285_AN_RF2G7_PWDDB);
/* 7820,b11,0, enpacal=0 */
REG_CLR_BIT(ah, AR9285_AN_RF2G1, AR9285_AN_RF2G1_ENPACAL);
/* 7820,b25,1, pdpadrv1=0 */
REG_CLR_BIT(ah, AR9285_AN_RF2G1, AR9285_AN_RF2G1_PDPADRV1);
/* 7820,b24,0, pdpadrv2=0 */
REG_CLR_BIT(ah, AR9285_AN_RF2G1, AR9285_AN_RF2G1_PDPADRV2);
/* 7820,b23,0, pdpaout=0 */
REG_CLR_BIT(ah, AR9285_AN_RF2G1, AR9285_AN_RF2G1_PDPAOUT);
/* 783c,b14-16,7, padrvgn2tab_0=7 */
REG_RMW_FIELD(ah, AR9285_AN_RF2G8, AR9285_AN_RF2G8_PADRVGN2TAB0, 7);
/*
* 7838,b29-31,0, padrvgn1tab_0=0
* does not matter since we turn it off
*/
REG_RMW_FIELD(ah, AR9285_AN_RF2G7, AR9285_AN_RF2G7_PADRVGN2TAB0, 0);
/* 7828, b0-11, ccom=fff */
REG_RMW_FIELD(ah, AR9285_AN_RF2G3, AR9271_AN_RF2G3_CCOMP, 0xfff);
REG_RMW_BUFFER_FLUSH(ah);
/* Set:
* localmode=1,bmode=1,bmoderxtx=1,synthon=1,
* txon=1,paon=1,oscon=1,synthon_force=1
*/
REG_WRITE(ah, AR9285_AN_TOP2, 0xca0358a0);
udelay(30);
REG_RMW_FIELD(ah, AR9285_AN_RF2G6, AR9271_AN_RF2G6_OFFS, 0);
/* find off_6_1; */
for (i = 6; i > 0; i--) {
regVal = REG_READ(ah, AR9285_AN_RF2G6);
regVal |= (1 << (20 + i));
REG_WRITE(ah, AR9285_AN_RF2G6, regVal);
udelay(1);
/* regVal = REG_READ(ah, 0x7834); */
regVal &= (~(0x1 << (20 + i)));
regVal |= (MS(REG_READ(ah, AR9285_AN_RF2G9),
AR9285_AN_RXTXBB1_SPARE9)
<< (20 + i));
REG_WRITE(ah, AR9285_AN_RF2G6, regVal);
}
regVal = (regVal >> 20) & 0x7f;
/* Update PA cal info */
if ((!is_reset) && (ah->pacal_info.prev_offset == regVal)) {
if (ah->pacal_info.max_skipcount < MAX_PACAL_SKIPCOUNT)
ah->pacal_info.max_skipcount =
2 * ah->pacal_info.max_skipcount;
ah->pacal_info.skipcount = ah->pacal_info.max_skipcount;
} else {
ah->pacal_info.max_skipcount = 1;
ah->pacal_info.skipcount = 0;
ah->pacal_info.prev_offset = regVal;
}
ENABLE_REG_RMW_BUFFER(ah);
/* 7834, b1=1 */
REG_SET_BIT(ah, AR9285_AN_RF2G6, 1 << 0);
/* 9808, b27=0 */
REG_CLR_BIT(ah, 0x9808, 1 << 27);
REG_RMW_BUFFER_FLUSH(ah);
ENABLE_REGWRITE_BUFFER(ah);
for (i = 0; i < ARRAY_SIZE(regList); i++)
REG_WRITE(ah, regList[i][0], regList[i][1]);
REGWRITE_BUFFER_FLUSH(ah);
}
static inline void ar9285_hw_pa_cal(struct ath_hw *ah, bool is_reset)
{
struct ath_common *common = ath9k_hw_common(ah);
u32 regVal;
int i, offset, offs_6_1, offs_0;
u32 ccomp_org, reg_field;
u32 regList[][2] = {
{ 0x786c, 0 },
{ 0x7854, 0 },
{ 0x7820, 0 },
{ 0x7824, 0 },
{ 0x7868, 0 },
{ 0x783c, 0 },
{ 0x7838, 0 },
};
ath_dbg(common, CALIBRATE, "Running PA Calibration\n");
/* PA CAL is not needed for high power solution */
if (ah->eep_ops->get_eeprom(ah, EEP_TXGAIN_TYPE) ==
AR5416_EEP_TXGAIN_HIGH_POWER)
return;
for (i = 0; i < ARRAY_SIZE(regList); i++)
regList[i][1] = REG_READ(ah, regList[i][0]);
regVal = REG_READ(ah, 0x7834);
regVal &= (~(0x1));
REG_WRITE(ah, 0x7834, regVal);
regVal = REG_READ(ah, 0x9808);
regVal |= (0x1 << 27);
REG_WRITE(ah, 0x9808, regVal);
REG_RMW_FIELD(ah, AR9285_AN_TOP3, AR9285_AN_TOP3_PWDDAC, 1);
REG_RMW_FIELD(ah, AR9285_AN_RXTXBB1, AR9285_AN_RXTXBB1_PDRXTXBB1, 1);
REG_RMW_FIELD(ah, AR9285_AN_RXTXBB1, AR9285_AN_RXTXBB1_PDV2I, 1);
REG_RMW_FIELD(ah, AR9285_AN_RXTXBB1, AR9285_AN_RXTXBB1_PDDACIF, 1);
REG_RMW_FIELD(ah, AR9285_AN_RF2G2, AR9285_AN_RF2G2_OFFCAL, 0);
REG_RMW_FIELD(ah, AR9285_AN_RF2G7, AR9285_AN_RF2G7_PWDDB, 0);
REG_RMW_FIELD(ah, AR9285_AN_RF2G1, AR9285_AN_RF2G1_ENPACAL, 0);
REG_RMW_FIELD(ah, AR9285_AN_RF2G1, AR9285_AN_RF2G1_PDPADRV1, 0);
REG_RMW_FIELD(ah, AR9285_AN_RF2G1, AR9285_AN_RF2G1_PDPADRV2, 0);
REG_RMW_FIELD(ah, AR9285_AN_RF2G1, AR9285_AN_RF2G1_PDPAOUT, 0);
REG_RMW_FIELD(ah, AR9285_AN_RF2G8, AR9285_AN_RF2G8_PADRVGN2TAB0, 7);
REG_RMW_FIELD(ah, AR9285_AN_RF2G7, AR9285_AN_RF2G7_PADRVGN2TAB0, 0);
ccomp_org = MS(REG_READ(ah, AR9285_AN_RF2G6), AR9285_AN_RF2G6_CCOMP);
REG_RMW_FIELD(ah, AR9285_AN_RF2G6, AR9285_AN_RF2G6_CCOMP, 0xf);
REG_WRITE(ah, AR9285_AN_TOP2, 0xca0358a0);
udelay(30);
REG_RMW_FIELD(ah, AR9285_AN_RF2G6, AR9285_AN_RF2G6_OFFS, 0);
REG_RMW_FIELD(ah, AR9285_AN_RF2G3, AR9285_AN_RF2G3_PDVCCOMP, 0);
for (i = 6; i > 0; i--) {
regVal = REG_READ(ah, 0x7834);
regVal |= (1 << (19 + i));
REG_WRITE(ah, 0x7834, regVal);
udelay(1);
regVal = REG_READ(ah, 0x7834);
regVal &= (~(0x1 << (19 + i)));
reg_field = MS(REG_READ(ah, 0x7840), AR9285_AN_RXTXBB1_SPARE9);
regVal |= (reg_field << (19 + i));
REG_WRITE(ah, 0x7834, regVal);
}
REG_RMW_FIELD(ah, AR9285_AN_RF2G3, AR9285_AN_RF2G3_PDVCCOMP, 1);
udelay(1);
reg_field = MS(REG_READ(ah, AR9285_AN_RF2G9), AR9285_AN_RXTXBB1_SPARE9);
REG_RMW_FIELD(ah, AR9285_AN_RF2G3, AR9285_AN_RF2G3_PDVCCOMP, reg_field);
offs_6_1 = MS(REG_READ(ah, AR9285_AN_RF2G6), AR9285_AN_RF2G6_OFFS);
offs_0 = MS(REG_READ(ah, AR9285_AN_RF2G3), AR9285_AN_RF2G3_PDVCCOMP);
offset = (offs_6_1<<1) | offs_0;
offset = offset - 0;
offs_6_1 = offset>>1;
offs_0 = offset & 1;
if ((!is_reset) && (ah->pacal_info.prev_offset == offset)) {
if (ah->pacal_info.max_skipcount < MAX_PACAL_SKIPCOUNT)
ah->pacal_info.max_skipcount =
2 * ah->pacal_info.max_skipcount;
ah->pacal_info.skipcount = ah->pacal_info.max_skipcount;
} else {
ah->pacal_info.max_skipcount = 1;
ah->pacal_info.skipcount = 0;
ah->pacal_info.prev_offset = offset;
}
REG_RMW_FIELD(ah, AR9285_AN_RF2G6, AR9285_AN_RF2G6_OFFS, offs_6_1);
REG_RMW_FIELD(ah, AR9285_AN_RF2G3, AR9285_AN_RF2G3_PDVCCOMP, offs_0);
regVal = REG_READ(ah, 0x7834);
regVal |= 0x1;
REG_WRITE(ah, 0x7834, regVal);
regVal = REG_READ(ah, 0x9808);
regVal &= (~(0x1 << 27));
REG_WRITE(ah, 0x9808, regVal);
for (i = 0; i < ARRAY_SIZE(regList); i++)
REG_WRITE(ah, regList[i][0], regList[i][1]);
REG_RMW_FIELD(ah, AR9285_AN_RF2G6, AR9285_AN_RF2G6_CCOMP, ccomp_org);
}
static void ar9002_hw_pa_cal(struct ath_hw *ah, bool is_reset)
{
if (AR_SREV_9271(ah)) {
if (is_reset || !ah->pacal_info.skipcount)
ar9271_hw_pa_cal(ah, is_reset);
else
ah->pacal_info.skipcount--;
} else if (AR_SREV_9285_12_OR_LATER(ah)) {
if (is_reset || !ah->pacal_info.skipcount)
ar9285_hw_pa_cal(ah, is_reset);
else
ah->pacal_info.skipcount--;
}
}
static void ar9002_hw_olc_temp_compensation(struct ath_hw *ah)
{
if (OLC_FOR_AR9287_10_LATER(ah))
ar9287_hw_olc_temp_compensation(ah);
else if (OLC_FOR_AR9280_20_LATER(ah))
ar9280_hw_olc_temp_compensation(ah);
}
static int ar9002_hw_calibrate(struct ath_hw *ah, struct ath9k_channel *chan,
u8 rxchainmask, bool longcal)
{
struct ath9k_cal_list *currCal = ah->cal_list_curr;
bool nfcal, nfcal_pending = false, percal_pending;
int ret;
nfcal = !!(REG_READ(ah, AR_PHY_AGC_CONTROL(ah)) & AR_PHY_AGC_CONTROL_NF);
if (ah->caldata) {
nfcal_pending = test_bit(NFCAL_PENDING, &ah->caldata->cal_flags);
if (longcal) /* Remember to not miss */
set_bit(LONGCAL_PENDING, &ah->caldata->cal_flags);
else if (test_bit(LONGCAL_PENDING, &ah->caldata->cal_flags))
longcal = true; /* Respin a previous one */
}
percal_pending = (currCal &&
(currCal->calState == CAL_RUNNING ||
currCal->calState == CAL_WAITING));
if (percal_pending && !nfcal) {
if (!ar9002_hw_per_calibration(ah, chan, rxchainmask, currCal))
return 0;
/* Looking for next waiting calibration if any */
for (currCal = currCal->calNext; currCal != ah->cal_list_curr;
currCal = currCal->calNext) {
if (currCal->calState == CAL_WAITING)
break;
}
if (currCal->calState == CAL_WAITING) {
percal_pending = true;
ah->cal_list_curr = currCal;
} else {
percal_pending = false;
ah->cal_list_curr = ah->cal_list;
}
}
/* Do not start a next calibration if the longcal is in action */
if (percal_pending && !nfcal && !longcal) {
ath9k_hw_reset_calibration(ah, currCal);
return 0;
}
/* Do NF cal only at longer intervals */
if (longcal || nfcal_pending) {
/*
* Get the value from the previous NF cal and update
* history buffer.
*/
if (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;
}
if (longcal) {
if (ah->caldata)
clear_bit(LONGCAL_PENDING,
&ah->caldata->cal_flags);
ath9k_hw_start_nfcal(ah, false);
/* Do periodic PAOffset Cal */
ar9002_hw_pa_cal(ah, false);
ar9002_hw_olc_temp_compensation(ah);
}
}
return !percal_pending;
}
/* Carrier leakage Calibration fix */
static bool ar9285_hw_cl_cal(struct ath_hw *ah, struct ath9k_channel *chan)
{
struct ath_common *common = ath9k_hw_common(ah);
REG_SET_BIT(ah, AR_PHY_CL_CAL_CTL, AR_PHY_CL_CAL_ENABLE);
if (IS_CHAN_HT20(chan)) {
REG_SET_BIT(ah, AR_PHY_CL_CAL_CTL, AR_PHY_PARALLEL_CAL_ENABLE);
REG_SET_BIT(ah, AR_PHY_TURBO, AR_PHY_FC_DYN2040_EN);
REG_CLR_BIT(ah, AR_PHY_AGC_CONTROL(ah),
AR_PHY_AGC_CONTROL_FLTR_CAL);
REG_CLR_BIT(ah, AR_PHY_TPCRG1, AR_PHY_TPCRG1_PD_CAL_ENABLE);
REG_SET_BIT(ah, AR_PHY_AGC_CONTROL(ah), AR_PHY_AGC_CONTROL_CAL);
if (!ath9k_hw_wait(ah, AR_PHY_AGC_CONTROL(ah),
AR_PHY_AGC_CONTROL_CAL, 0, AH_WAIT_TIMEOUT)) {
ath_dbg(common, CALIBRATE,
"offset calibration failed to complete in %d ms; noisy environment?\n",
AH_WAIT_TIMEOUT / 1000);
return false;
}
REG_CLR_BIT(ah, AR_PHY_TURBO, AR_PHY_FC_DYN2040_EN);
REG_CLR_BIT(ah, AR_PHY_CL_CAL_CTL, AR_PHY_PARALLEL_CAL_ENABLE);
REG_CLR_BIT(ah, AR_PHY_CL_CAL_CTL, AR_PHY_CL_CAL_ENABLE);
}
REG_CLR_BIT(ah, AR_PHY_ADC_CTL, AR_PHY_ADC_CTL_OFF_PWDADC);
REG_SET_BIT(ah, AR_PHY_AGC_CONTROL(ah), AR_PHY_AGC_CONTROL_FLTR_CAL);
REG_SET_BIT(ah, AR_PHY_TPCRG1, AR_PHY_TPCRG1_PD_CAL_ENABLE);
REG_SET_BIT(ah, AR_PHY_AGC_CONTROL(ah), AR_PHY_AGC_CONTROL_CAL);
if (!ath9k_hw_wait(ah, AR_PHY_AGC_CONTROL(ah), AR_PHY_AGC_CONTROL_CAL,
0, AH_WAIT_TIMEOUT)) {
ath_dbg(common, CALIBRATE,
"offset calibration failed to complete in %d ms; noisy environment?\n",
AH_WAIT_TIMEOUT / 1000);
return false;
}
REG_SET_BIT(ah, AR_PHY_ADC_CTL, AR_PHY_ADC_CTL_OFF_PWDADC);
REG_CLR_BIT(ah, AR_PHY_CL_CAL_CTL, AR_PHY_CL_CAL_ENABLE);
REG_CLR_BIT(ah, AR_PHY_AGC_CONTROL(ah), AR_PHY_AGC_CONTROL_FLTR_CAL);
return true;
}
static bool ar9285_hw_clc(struct ath_hw *ah, struct ath9k_channel *chan)
{
int i;
u_int32_t txgain_max;
u_int32_t clc_gain, gain_mask = 0, clc_num = 0;
u_int32_t reg_clc_I0, reg_clc_Q0;
u_int32_t i0_num = 0;
u_int32_t q0_num = 0;
u_int32_t total_num = 0;
u_int32_t reg_rf2g5_org;
bool retv = true;
if (!(ar9285_hw_cl_cal(ah, chan)))
return false;
txgain_max = MS(REG_READ(ah, AR_PHY_TX_PWRCTRL7),
AR_PHY_TX_PWRCTRL_TX_GAIN_TAB_MAX);
for (i = 0; i < (txgain_max+1); i++) {
clc_gain = (REG_READ(ah, (AR_PHY_TX_GAIN_TBL1+(i<<2))) &
AR_PHY_TX_GAIN_CLC) >> AR_PHY_TX_GAIN_CLC_S;
if (!(gain_mask & (1 << clc_gain))) {
gain_mask |= (1 << clc_gain);
clc_num++;
}
}
for (i = 0; i < clc_num; i++) {
reg_clc_I0 = (REG_READ(ah, (AR_PHY_CLC_TBL1 + (i << 2)))
& AR_PHY_CLC_I0) >> AR_PHY_CLC_I0_S;
reg_clc_Q0 = (REG_READ(ah, (AR_PHY_CLC_TBL1 + (i << 2)))
& AR_PHY_CLC_Q0) >> AR_PHY_CLC_Q0_S;
if (reg_clc_I0 == 0)
i0_num++;
if (reg_clc_Q0 == 0)
q0_num++;
}
total_num = i0_num + q0_num;
if (total_num > AR9285_CLCAL_REDO_THRESH) {
reg_rf2g5_org = REG_READ(ah, AR9285_RF2G5);
if (AR_SREV_9285E_20(ah)) {
REG_WRITE(ah, AR9285_RF2G5,
(reg_rf2g5_org & AR9285_RF2G5_IC50TX) |
AR9285_RF2G5_IC50TX_XE_SET);
} else {
REG_WRITE(ah, AR9285_RF2G5,
(reg_rf2g5_org & AR9285_RF2G5_IC50TX) |
AR9285_RF2G5_IC50TX_SET);
}
retv = ar9285_hw_cl_cal(ah, chan);
REG_WRITE(ah, AR9285_RF2G5, reg_rf2g5_org);
}
return retv;
}
static bool ar9002_hw_init_cal(struct ath_hw *ah, struct ath9k_channel *chan)
{
struct ath_common *common = ath9k_hw_common(ah);
if (AR_SREV_9271(ah)) {
if (!ar9285_hw_cl_cal(ah, chan))
return false;
} else if (AR_SREV_9285(ah) && AR_SREV_9285_12_OR_LATER(ah)) {
if (!ar9285_hw_clc(ah, chan))
return false;
} else {
if (AR_SREV_9280_20_OR_LATER(ah)) {
if (!AR_SREV_9287_11_OR_LATER(ah))
REG_CLR_BIT(ah, AR_PHY_ADC_CTL,
AR_PHY_ADC_CTL_OFF_PWDADC);
REG_SET_BIT(ah, AR_PHY_AGC_CONTROL(ah),
AR_PHY_AGC_CONTROL_FLTR_CAL);
}
/* Calibrate the AGC */
REG_WRITE(ah, AR_PHY_AGC_CONTROL(ah),
REG_READ(ah, AR_PHY_AGC_CONTROL(ah)) |
AR_PHY_AGC_CONTROL_CAL);
/* Poll for offset calibration complete */
if (!ath9k_hw_wait(ah, AR_PHY_AGC_CONTROL(ah),
AR_PHY_AGC_CONTROL_CAL,
0, AH_WAIT_TIMEOUT)) {
ath_dbg(common, CALIBRATE,
"offset calibration failed to complete in %d ms; noisy environment?\n",
AH_WAIT_TIMEOUT / 1000);
return false;
}
if (AR_SREV_9280_20_OR_LATER(ah)) {
if (!AR_SREV_9287_11_OR_LATER(ah))
REG_SET_BIT(ah, AR_PHY_ADC_CTL,
AR_PHY_ADC_CTL_OFF_PWDADC);
REG_CLR_BIT(ah, AR_PHY_AGC_CONTROL(ah),
AR_PHY_AGC_CONTROL_FLTR_CAL);
}
}
/* Do PA Calibration */
ar9002_hw_pa_cal(ah, true);
ath9k_hw_loadnf(ah, chan);
ath9k_hw_start_nfcal(ah, true);
ah->cal_list = ah->cal_list_last = ah->cal_list_curr = NULL;
/* Enable IQ, ADC Gain and ADC DC offset CALs */
if (AR_SREV_9100(ah) || AR_SREV_9160_10_OR_LATER(ah)) {
ah->supp_cals = IQ_MISMATCH_CAL;
if (AR_SREV_9160_10_OR_LATER(ah))
ah->supp_cals |= ADC_GAIN_CAL | ADC_DC_CAL;
if (AR_SREV_9287(ah))
ah->supp_cals &= ~ADC_GAIN_CAL;
if (ar9002_hw_is_cal_supported(ah, chan, ADC_GAIN_CAL)) {
INIT_CAL(&ah->adcgain_caldata);
INSERT_CAL(ah, &ah->adcgain_caldata);
ath_dbg(common, CALIBRATE,
"enabling ADC Gain Calibration\n");
}
if (ar9002_hw_is_cal_supported(ah, chan, ADC_DC_CAL)) {
INIT_CAL(&ah->adcdc_caldata);
INSERT_CAL(ah, &ah->adcdc_caldata);
ath_dbg(common, CALIBRATE,
"enabling ADC DC Calibration\n");
}
if (ar9002_hw_is_cal_supported(ah, chan, IQ_MISMATCH_CAL)) {
INIT_CAL(&ah->iq_caldata);
INSERT_CAL(ah, &ah->iq_caldata);
ath_dbg(common, CALIBRATE, "enabling IQ Calibration\n");
}
ah->cal_list_curr = ah->cal_list;
if (ah->cal_list_curr)
ath9k_hw_reset_calibration(ah, ah->cal_list_curr);
}
if (ah->caldata)
ah->caldata->CalValid = 0;
return true;
}
static const struct ath9k_percal_data iq_cal_multi_sample = {
IQ_MISMATCH_CAL,
MAX_CAL_SAMPLES,
PER_MIN_LOG_COUNT,
ar9002_hw_iqcal_collect,
ar9002_hw_iqcalibrate
};
static const struct ath9k_percal_data iq_cal_single_sample = {
IQ_MISMATCH_CAL,
MIN_CAL_SAMPLES,
PER_MAX_LOG_COUNT,
ar9002_hw_iqcal_collect,
ar9002_hw_iqcalibrate
};
static const struct ath9k_percal_data adc_gain_cal_multi_sample = {
ADC_GAIN_CAL,
MAX_CAL_SAMPLES,
PER_MIN_LOG_COUNT,
ar9002_hw_adc_gaincal_collect,
ar9002_hw_adc_gaincal_calibrate
};
static const struct ath9k_percal_data adc_gain_cal_single_sample = {
ADC_GAIN_CAL,
MIN_CAL_SAMPLES,
PER_MAX_LOG_COUNT,
ar9002_hw_adc_gaincal_collect,
ar9002_hw_adc_gaincal_calibrate
};
static const struct ath9k_percal_data adc_dc_cal_multi_sample = {
ADC_DC_CAL,
MAX_CAL_SAMPLES,
PER_MIN_LOG_COUNT,
ar9002_hw_adc_dccal_collect,
ar9002_hw_adc_dccal_calibrate
};
static const struct ath9k_percal_data adc_dc_cal_single_sample = {
ADC_DC_CAL,
MIN_CAL_SAMPLES,
PER_MAX_LOG_COUNT,
ar9002_hw_adc_dccal_collect,
ar9002_hw_adc_dccal_calibrate
};
static void ar9002_hw_init_cal_settings(struct ath_hw *ah)
{
if (AR_SREV_9100(ah)) {
ah->iq_caldata.calData = &iq_cal_multi_sample;
ah->supp_cals = IQ_MISMATCH_CAL;
return;
}
if (AR_SREV_9160_10_OR_LATER(ah)) {
if (AR_SREV_9280_20_OR_LATER(ah)) {
ah->iq_caldata.calData = &iq_cal_single_sample;
ah->adcgain_caldata.calData =
&adc_gain_cal_single_sample;
ah->adcdc_caldata.calData =
&adc_dc_cal_single_sample;
} else {
ah->iq_caldata.calData = &iq_cal_multi_sample;
ah->adcgain_caldata.calData =
&adc_gain_cal_multi_sample;
ah->adcdc_caldata.calData =
&adc_dc_cal_multi_sample;
}
ah->supp_cals = ADC_GAIN_CAL | ADC_DC_CAL | IQ_MISMATCH_CAL;
if (AR_SREV_9287(ah))
ah->supp_cals &= ~ADC_GAIN_CAL;
}
}
void ar9002_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);
priv_ops->init_cal_settings = ar9002_hw_init_cal_settings;
priv_ops->init_cal = ar9002_hw_init_cal;
priv_ops->setup_calibration = ar9002_hw_setup_calibration;
ops->calibrate = ar9002_hw_calibrate;
}
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