ath9k_hw: Improve power control accuracy for AR9003
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>
diff --git a/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c b/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c
index da26d37..5ffeda2 100644
--- a/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c
+++ b/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c
@@ -4062,6 +4062,7 @@
{
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 @@
*/
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);