Skip to content

Commit

Permalink
ath9k: Add open loop control support
Browse files Browse the repository at this point in the history 
This patch adds Open Loop Control support for Atheros chipsets that
supports open loop power control.

Signed-off-by: Senthil Balasubramanian <senthilkumar@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
  • Loading branch information
Senthil Balasubramanian authored and John W. Linville committed Feb 27, 2009
1 parent 81cb762 commit 8bd1d07
Show file tree
Hide file tree
Showing 7 changed files with 277 additions and 39 deletions.
31 changes: 31 additions & 0 deletions drivers/net/wireless/ath9k/calib.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -718,10 +718,39 @@ s16 ath9k_hw_getchan_noise(struct ath_hw *ah, struct ath9k_channel *chan)
return nf;
}

static void ath9k_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->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);
}
}
}

bool ath9k_hw_calibrate(struct ath_hw *ah, struct ath9k_channel *chan,
u8 rxchainmask, bool longcal,
bool *isCalDone)
{
#define OLC_FOR_AR9280_20_LATER (AR_SREV_9280_20_OR_LATER(ah) && \
ah->eep_ops->get_eeprom(ah, EEP_OL_PWRCTRL))
struct hal_cal_list *currCal = ah->cal_list_curr;

*isCalDone = true;
Expand All @@ -742,6 +771,8 @@ bool ath9k_hw_calibrate(struct ath_hw *ah, struct ath9k_channel *chan,
}

if (longcal) {
if (OLC_FOR_AR9280_20_LATER)
ath9k_olc_temp_compensation(ah);
ath9k_hw_getnf(ah, chan);
ath9k_hw_loadnf(ah, ah->curchan);
ath9k_hw_start_nfcal(ah);
Expand Down
210 changes: 175 additions & 35 deletions drivers/net/wireless/ath9k/eeprom.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -179,6 +179,69 @@ static void ath9k_hw_get_legacy_target_powers(struct ath_hw *ah,
}
}

static void ath9k_get_txgain_index(struct ath_hw *ah,
struct ath9k_channel *chan,
struct calDataPerFreqOpLoop *rawDatasetOpLoop,
u8 *calChans, u16 availPiers, u8 *pwr, u8 *pcdacIdx)
{
u8 pcdac, i = 0;
u16 idxL = 0, idxR = 0, numPiers;
bool match;
struct chan_centers centers;

ath9k_hw_get_channel_centers(ah, chan, &centers);

for (numPiers = 0; numPiers < availPiers; numPiers++)
if (calChans[numPiers] == AR5416_BCHAN_UNUSED)
break;

match = ath9k_hw_get_lower_upper_index(
(u8)FREQ2FBIN(centers.synth_center, IS_CHAN_2GHZ(chan)),
calChans, numPiers, &idxL, &idxR);
if (match) {
pcdac = rawDatasetOpLoop[idxL].pcdac[0][0];
*pwr = rawDatasetOpLoop[idxL].pwrPdg[0][0];
} else {
pcdac = rawDatasetOpLoop[idxR].pcdac[0][0];
*pwr = (rawDatasetOpLoop[idxL].pwrPdg[0][0] +
rawDatasetOpLoop[idxR].pwrPdg[0][0])/2;
}

while (pcdac > ah->originalGain[i] &&
i < (AR9280_TX_GAIN_TABLE_SIZE - 1))
i++;

*pcdacIdx = i;
return;
}

static void ath9k_olc_get_pdadcs(struct ath_hw *ah,
u32 initTxGain,
int txPower,
u8 *pPDADCValues)
{
u32 i;
u32 offset;

REG_RMW_FIELD(ah, AR_PHY_TX_PWRCTRL6_0,
AR_PHY_TX_PWRCTRL_ERR_EST_MODE, 3);
REG_RMW_FIELD(ah, AR_PHY_TX_PWRCTRL6_1,
AR_PHY_TX_PWRCTRL_ERR_EST_MODE, 3);

REG_RMW_FIELD(ah, AR_PHY_TX_PWRCTRL7,
AR_PHY_TX_PWRCTRL_INIT_TX_GAIN, initTxGain);

offset = txPower;
for (i = 0; i < AR5416_NUM_PDADC_VALUES; i++)
if (i < offset)
pPDADCValues[i] = 0x0;
else
pPDADCValues[i] = 0xFF;
}




static void ath9k_hw_get_target_powers(struct ath_hw *ah,
struct ath9k_channel *chan,
struct cal_target_power_ht *powInfo,
Expand Down Expand Up @@ -1596,6 +1659,16 @@ static u32 ath9k_hw_def_get_eeprom(struct ath_hw *ah,
return pBase->rxGainType;
case EEP_TXGAIN_TYPE:
return pBase->txGainType;
case EEP_OL_PWRCTRL:
if (AR5416_VER_MASK >= AR5416_EEP_MINOR_VER_19)
return pBase->openLoopPwrCntl ? true : false;
else
return false;
case EEP_RC_CHAIN_MASK:
if (AR5416_VER_MASK >= AR5416_EEP_MINOR_VER_19)
return pBase->rcChainMask;
else
return 0;
case EEP_DAC_HPWR_5G:
if (AR5416_VER_MASK >= AR5416_EEP_MINOR_VER_20)
return pBase->dacHiPwrMode_5G;
Expand Down Expand Up @@ -1839,8 +1912,15 @@ static bool ath9k_hw_def_set_board_values(struct ath_hw *ah,
pModal->swSettleHt40);
}

if (AR_SREV_9280_20_OR_LATER(ah) &&
AR5416_VER_MASK >= AR5416_EEP_MINOR_VER_19)
REG_RMW_FIELD(ah, AR_PHY_CCK_TX_CTRL,
AR_PHY_CCK_TX_CTRL_TX_DAC_SCALE_CCK,
pModal->miscBits);


if (AR_SREV_9280_20(ah) && AR5416_VER_MASK >= AR5416_EEP_MINOR_VER_20) {
if (IS_CHAN_HT20(chan))
if (IS_CHAN_2GHZ(chan))
REG_RMW_FIELD(ah, AR_AN_TOP1, AR_AN_TOP1_DACIPMODE,
eep->baseEepHeader.dacLpMode);
else if (eep->baseEepHeader.dacHiPwrMode_5G)
Expand All @@ -1851,6 +1931,10 @@ static bool ath9k_hw_def_set_board_values(struct ath_hw *ah,

REG_RMW_FIELD(ah, AR_PHY_FRAME_CTL, AR_PHY_FRAME_CTL_TX_CLIP,
pModal->miscBits >> 2);

REG_RMW_FIELD(ah, AR_PHY_TX_PWRCTRL9,
AR_PHY_TX_DESIRED_SCALE_CCK,
eep->baseEepHeader.desiredScaleCCK);
}

return true;
Expand Down Expand Up @@ -2080,6 +2164,12 @@ static bool ath9k_hw_set_def_power_cal_table(struct ath_hw *ah,
struct ath9k_channel *chan,
int16_t *pTxPowerIndexOffset)
{
#define OLC_FOR_AR9280_20_LATER (AR_SREV_9280_20_OR_LATER(ah) && \
ah->eep_ops->get_eeprom(ah, EEP_OL_PWRCTRL))
#define SM_PD_GAIN(x) SM(0x38, AR_PHY_TPCRG5_PD_GAIN_BOUNDARY_##x)
#define SM_PDGAIN_B(x, y) \
SM((gainBoundaries[x]), AR_PHY_TPCRG5_PD_GAIN_BOUNDARY_##y)

struct ar5416_eeprom_def *pEepData = &ah->eeprom.def;
struct cal_data_per_freq *pRawDataset;
u8 *pCalBChans = NULL;
Expand Down Expand Up @@ -2113,6 +2203,12 @@ static bool ath9k_hw_set_def_power_cal_table(struct ath_hw *ah,
numPiers = AR5416_NUM_5G_CAL_PIERS;
}

if (OLC_FOR_AR9280_20_LATER && IS_CHAN_2GHZ(chan)) {
pRawDataset = pEepData->calPierData2G[0];
ah->initPDADC = ((struct calDataPerFreqOpLoop *)
pRawDataset)->vpdPdg[0][0];
}

numXpdGain = 0;

for (i = 1; i <= AR5416_PD_GAINS_IN_MASK; i++) {
Expand Down Expand Up @@ -2148,25 +2244,45 @@ static bool ath9k_hw_set_def_power_cal_table(struct ath_hw *ah,
else
pRawDataset = pEepData->calPierData5G[i];

ath9k_hw_get_def_gain_boundaries_pdadcs(ah, chan,
pRawDataset, pCalBChans,
numPiers, pdGainOverlap_t2,
&tMinCalPower, gainBoundaries,
pdadcValues, numXpdGain);

if (OLC_FOR_AR9280_20_LATER) {
u8 pcdacIdx;
u8 txPower;

ath9k_get_txgain_index(ah, chan,
(struct calDataPerFreqOpLoop *)pRawDataset,
pCalBChans, numPiers, &txPower, &pcdacIdx);
ath9k_olc_get_pdadcs(ah, pcdacIdx,
txPower/2, pdadcValues);
} else {
ath9k_hw_get_def_gain_boundaries_pdadcs(ah,
chan, pRawDataset,
pCalBChans, numPiers,
pdGainOverlap_t2,
&tMinCalPower,
gainBoundaries,
pdadcValues,
numXpdGain);
}

if ((i == 0) || AR_SREV_5416_V20_OR_LATER(ah)) {
REG_WRITE(ah,
AR_PHY_TPCRG5 + regChainOffset,
SM(pdGainOverlap_t2,
AR_PHY_TPCRG5_PD_GAIN_OVERLAP)
| SM(gainBoundaries[0],
AR_PHY_TPCRG5_PD_GAIN_BOUNDARY_1)
| SM(gainBoundaries[1],
AR_PHY_TPCRG5_PD_GAIN_BOUNDARY_2)
| SM(gainBoundaries[2],
AR_PHY_TPCRG5_PD_GAIN_BOUNDARY_3)
| SM(gainBoundaries[3],
AR_PHY_TPCRG5_PD_GAIN_BOUNDARY_4));
if (OLC_FOR_AR9280_20_LATER) {
REG_WRITE(ah,
AR_PHY_TPCRG5 + regChainOffset,
SM(0x6,
AR_PHY_TPCRG5_PD_GAIN_OVERLAP) |
SM_PD_GAIN(1) | SM_PD_GAIN(2) |
SM_PD_GAIN(3) | SM_PD_GAIN(4));
} else {
REG_WRITE(ah,
AR_PHY_TPCRG5 + regChainOffset,
SM(pdGainOverlap_t2,
AR_PHY_TPCRG5_PD_GAIN_OVERLAP)|
SM_PDGAIN_B(0, 1) |
SM_PDGAIN_B(1, 2) |
SM_PDGAIN_B(2, 3) |
SM_PDGAIN_B(3, 4));
}
}

regOffset = AR_PHY_BASE + (672 << 2) + regChainOffset;
Expand Down Expand Up @@ -2200,6 +2316,8 @@ static bool ath9k_hw_set_def_power_cal_table(struct ath_hw *ah,
*pTxPowerIndexOffset = 0;

return true;
#undef SM_PD_GAIN
#undef SM_PDGAIN_B
}

static bool ath9k_hw_set_def_power_per_rate_table(struct ath_hw *ah,
Expand Down Expand Up @@ -2500,13 +2618,14 @@ static int ath9k_hw_def_set_txpower(struct ath_hw *ah,
u8 twiceMaxRegulatoryPower,
u8 powerLimit)
{
#define RT_AR_DELTA(x) (ratesArray[x] - cck_ofdm_delta)
struct ar5416_eeprom_def *pEepData = &ah->eeprom.def;
struct modal_eep_header *pModal =
&(pEepData->modalHeader[IS_CHAN_2GHZ(chan)]);
int16_t ratesArray[Ar5416RateSize];
int16_t txPowerIndexOffset = 0;
u8 ht40PowerIncForPdadc = 2;
int i;
int i, cck_ofdm_delta = 0;

memset(ratesArray, 0, sizeof(ratesArray));

Expand Down Expand Up @@ -2555,16 +2674,30 @@ static int ath9k_hw_def_set_txpower(struct ath_hw *ah,
| ATH9K_POW_SM(ratesArray[rate24mb], 0));

if (IS_CHAN_2GHZ(chan)) {
REG_WRITE(ah, AR_PHY_POWER_TX_RATE3,
ATH9K_POW_SM(ratesArray[rate2s], 24)
| ATH9K_POW_SM(ratesArray[rate2l], 16)
| ATH9K_POW_SM(ratesArray[rateXr], 8)
| ATH9K_POW_SM(ratesArray[rate1l], 0));
REG_WRITE(ah, AR_PHY_POWER_TX_RATE4,
ATH9K_POW_SM(ratesArray[rate11s], 24)
| ATH9K_POW_SM(ratesArray[rate11l], 16)
| ATH9K_POW_SM(ratesArray[rate5_5s], 8)
| ATH9K_POW_SM(ratesArray[rate5_5l], 0));
if (OLC_FOR_AR9280_20_LATER) {
cck_ofdm_delta = 2;
REG_WRITE(ah, AR_PHY_POWER_TX_RATE3,
ATH9K_POW_SM(RT_AR_DELTA(rate2s), 24)
| ATH9K_POW_SM(RT_AR_DELTA(rate2l), 16)
| ATH9K_POW_SM(ratesArray[rateXr], 8)
| ATH9K_POW_SM(RT_AR_DELTA(rate1l), 0));
REG_WRITE(ah, AR_PHY_POWER_TX_RATE4,
ATH9K_POW_SM(RT_AR_DELTA(rate11s), 24)
| ATH9K_POW_SM(RT_AR_DELTA(rate11l), 16)
| ATH9K_POW_SM(RT_AR_DELTA(rate5_5s), 8)
| ATH9K_POW_SM(RT_AR_DELTA(rate5_5l), 0));
} else {
REG_WRITE(ah, AR_PHY_POWER_TX_RATE3,
ATH9K_POW_SM(ratesArray[rate2s], 24)
| ATH9K_POW_SM(ratesArray[rate2l], 16)
| ATH9K_POW_SM(ratesArray[rateXr], 8)
| ATH9K_POW_SM(ratesArray[rate1l], 0));
REG_WRITE(ah, AR_PHY_POWER_TX_RATE4,
ATH9K_POW_SM(ratesArray[rate11s], 24)
| ATH9K_POW_SM(ratesArray[rate11l], 16)
| ATH9K_POW_SM(ratesArray[rate5_5s], 8)
| ATH9K_POW_SM(ratesArray[rate5_5l], 0));
}
}

REG_WRITE(ah, AR_PHY_POWER_TX_RATE5,
Expand Down Expand Up @@ -2597,12 +2730,19 @@ static int ath9k_hw_def_set_txpower(struct ath_hw *ah,
ht40PowerIncForPdadc, 8)
| ATH9K_POW_SM(ratesArray[rateHt40_4] +
ht40PowerIncForPdadc, 0));

REG_WRITE(ah, AR_PHY_POWER_TX_RATE9,
ATH9K_POW_SM(ratesArray[rateExtOfdm], 24)
| ATH9K_POW_SM(ratesArray[rateExtCck], 16)
| ATH9K_POW_SM(ratesArray[rateDupOfdm], 8)
| ATH9K_POW_SM(ratesArray[rateDupCck], 0));
if (OLC_FOR_AR9280_20_LATER) {
REG_WRITE(ah, AR_PHY_POWER_TX_RATE9,
ATH9K_POW_SM(ratesArray[rateExtOfdm], 24)
| ATH9K_POW_SM(RT_AR_DELTA(rateExtCck), 16)
| ATH9K_POW_SM(ratesArray[rateDupOfdm], 8)
| ATH9K_POW_SM(RT_AR_DELTA(rateDupCck), 0));
} else {
REG_WRITE(ah, AR_PHY_POWER_TX_RATE9,
ATH9K_POW_SM(ratesArray[rateExtOfdm], 24)
| ATH9K_POW_SM(ratesArray[rateExtCck], 16)
| ATH9K_POW_SM(ratesArray[rateDupOfdm], 8)
| ATH9K_POW_SM(ratesArray[rateDupCck], 0));
}
}

REG_WRITE(ah, AR_PHY_POWER_TX_SUB,
Expand Down
13 changes: 12 additions & 1 deletion drivers/net/wireless/ath9k/eeprom.h
View file
Original file line number Diff line number Diff line change
Expand Up @@ -168,6 +168,8 @@
#define AR5416_EEP4K_PD_GAIN_ICEPTS 5
#define AR5416_EEP4K_MAX_CHAINS 1

#define AR9280_TX_GAIN_TABLE_SIZE 22

enum eeprom_param {
EEP_NFTHRESH_5,
EEP_NFTHRESH_2,
Expand All @@ -188,6 +190,8 @@ enum eeprom_param {
EEP_RX_MASK,
EEP_RXGAIN_TYPE,
EEP_TXGAIN_TYPE,
EEP_OL_PWRCTRL,
EEP_RC_CHAIN_MASK,
EEP_DAC_HPWR_5G,
EEP_FRAC_N_5G
};
Expand Down Expand Up @@ -229,7 +233,7 @@ struct base_eep_header {
u8 futureBase_1[2];
u8 rxGainType;
u8 dacHiPwrMode_5G;
u8 futureBase_2;
u8 openLoopPwrCntl;
u8 dacLpMode;
u8 txGainType;
u8 rcChainMask;
Expand Down Expand Up @@ -310,6 +314,13 @@ struct modal_eep_header {
struct spur_chan spurChans[AR5416_EEPROM_MODAL_SPURS];
} __packed;

struct calDataPerFreqOpLoop {
u8 pwrPdg[2][5];
u8 vpdPdg[2][5];
u8 pcdac[2][5];
u8 empty[2][5];
} __packed;

struct modal_eep_4k_header {
u32 antCtrlChain[AR5416_EEP4K_MAX_CHAINS];
u32 antCtrlCommon;
Expand Down
Loading

0 comments on commit 8bd1d07

Please sign in to comment.