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ath9k_hw: Improve power control accuracy for AR9003

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It is done for 5Ghz by adding three temperature slopes.

Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Vasanthakumar Thiagarajan
2010-11-10 05:03:13 -08:00
committed by John W. Linville
parent f4475a6e52
commit 15cbbc44cc
1 changed files with 11 additions and 1 deletions
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12
drivers/net/wireless/ath/ath9k/ar9003_eeprom.c
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@@ -4062,6 +4062,7 @@ static int ar9003_hw_power_control_override(struct ath_hw *ah,
{ {
int tempSlope = 0; int tempSlope = 0;
struct ar9300_eeprom *eep = &ah->eeprom.ar9300_eep; struct ar9300_eeprom *eep = &ah->eeprom.ar9300_eep;
int f[3], t[3];
REG_RMW(ah, AR_PHY_TPC_11_B0, REG_RMW(ah, AR_PHY_TPC_11_B0,
(correction[0] << AR_PHY_TPC_OLPC_GAIN_DELTA_S), (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) if (frequency < 4000)
tempSlope = eep->modalHeader2G.tempSlope; 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; tempSlope = eep->modalHeader5G.tempSlope;
REG_RMW_FIELD(ah, AR_PHY_TPC_19, AR_PHY_TPC_19_ALPHA_THERM, tempSlope); REG_RMW_FIELD(ah, AR_PHY_TPC_19, AR_PHY_TPC_19_ALPHA_THERM, tempSlope);