From 15cbbc44cc4abaaebc37caf0ec9410a3f83d1deb Mon Sep 17 00:00:00 2001 From: Vasanthakumar Thiagarajan Date: Wed, 10 Nov 2010 05:03:13 -0800 Subject: [PATCH] ath9k_hw: Improve power control accuracy for AR9003 It is done for 5Ghz by adding three temperature slopes. Signed-off-by: Vasanthakumar Thiagarajan Signed-off-by: John W. Linville --- drivers/net/wireless/ath/ath9k/ar9003_eeprom.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c b/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c index da26d3704cb2..5ffeda25bf14 100644 --- a/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c +++ b/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c @@ -4062,6 +4062,7 @@ static int ar9003_hw_power_control_override(struct ath_hw *ah, { int tempSlope = 0; struct ar9300_eeprom *eep = &ah->eeprom.ar9300_eep; + int f[3], t[3]; REG_RMW(ah, AR_PHY_TPC_11_B0, (correction[0] << AR_PHY_TPC_OLPC_GAIN_DELTA_S), @@ -4090,7 +4091,16 @@ static int ar9003_hw_power_control_override(struct ath_hw *ah, */ if (frequency < 4000) tempSlope = eep->modalHeader2G.tempSlope; - else + else if (eep->base_ext2.tempSlopeLow != 0) { + t[0] = eep->base_ext2.tempSlopeLow; + f[0] = 5180; + t[1] = eep->modalHeader5G.tempSlope; + f[1] = 5500; + t[2] = eep->base_ext2.tempSlopeHigh; + f[2] = 5785; + tempSlope = ar9003_hw_power_interpolate((s32) frequency, + f, t, 3); + } else tempSlope = eep->modalHeader5G.tempSlope; REG_RMW_FIELD(ah, AR_PHY_TPC_19, AR_PHY_TPC_19_ALPHA_THERM, tempSlope); -- 2.20.1