diff options
| author | Senthil Balasubramanian <senthilkumar@atheros.com> | 2009-02-12 09:27:03 +0100 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2009-02-27 20:51:46 +0100 |
| commit | 8bd1d07f9345750bd4d767e6c1600919672f98ba (patch) | |
| tree | 42b201403637888b4c5cde5e1fd096c373d4ca05 /drivers/net/wireless/ath9k/calib.c | |
| parent | mac80211: Extend the rate control API with an update callback (diff) | |
| download | linux-8bd1d07f9345750bd4d767e6c1600919672f98ba.tar.xz linux-8bd1d07f9345750bd4d767e6c1600919672f98ba.zip | |
ath9k: Add open loop control support
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>
Diffstat (limited to 'drivers/net/wireless/ath9k/calib.c')
| -rw-r--r-- | drivers/net/wireless/ath9k/calib.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath9k/calib.c b/drivers/net/wireless/ath9k/calib.c index a7ce8c5d48f5..e5abe6564ca7 100644 --- a/drivers/net/wireless/ath9k/calib.c +++ b/drivers/net/wireless/ath9k/calib.c @@ -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); |