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ath9k: Add open loop control support

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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>
This commit is contained in:
Senthil Balasubramanian
2009-02-12 13:57:03 +05:30
committed by John W. Linville
parent 81cb7623ad
commit 8bd1d07f93
7 changed files with 277 additions and 39 deletions
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31
drivers/net/wireless/ath9k/calib.c
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@@ -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;
@@ -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);