Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 15cbbc44 authored by Vasanthakumar Thiagarajan's avatar Vasanthakumar Thiagarajan Committed by John W. Linville
Browse files

ath9k_hw: Improve power control accuracy for AR9003 



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

Signed-off-by: default avatarVasanthakumar Thiagarajan <vasanth@atheros.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent f4475a6e

drivers/net/wireless/ath/ath9k/ar9003_eeprom.c

+11 −1
Original line number Diff line number Diff line
@@ -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);