diff --git a/drivers/net/wireless/ath/ath.h b/drivers/net/wireless/ath/ath.h
index 4ed7f24..bb71b4f 100644
--- a/drivers/net/wireless/ath/ath.h
+++ b/drivers/net/wireless/ath/ath.h
@@ -71,7 +71,6 @@
 	char alpha2[2];
 	u16 country_code;
 	u16 max_power_level;
-	u32 tp_scale;
 	u16 current_rd;
 	u16 current_rd_ext;
 	int16_t power_limit;
diff --git a/drivers/net/wireless/ath/ath9k/ar5008_phy.c b/drivers/net/wireless/ath/ath9k/ar5008_phy.c
index 0a749c8..f199e9e 100644
--- a/drivers/net/wireless/ath/ath9k/ar5008_phy.c
+++ b/drivers/net/wireless/ath/ath9k/ar5008_phy.c
@@ -763,10 +763,8 @@
 static int ar5008_hw_process_ini(struct ath_hw *ah,
 				 struct ath9k_channel *chan)
 {
-	struct ath_regulatory *regulatory = ath9k_hw_regulatory(ah);
 	struct ath_common *common = ath9k_hw_common(ah);
 	int i, regWrites = 0;
-	struct ieee80211_channel *channel = chan->chan;
 	u32 modesIndex, freqIndex;
 
 	switch (chan->chanmode) {
@@ -903,14 +901,7 @@
 	ar5008_hw_set_channel_regs(ah, chan);
 	ar5008_hw_init_chain_masks(ah);
 	ath9k_olc_init(ah);
-
-	/* Set TX power */
-	ah->eep_ops->set_txpower(ah, chan,
-				 ath9k_regd_get_ctl(regulatory, chan),
-				 channel->max_antenna_gain * 2,
-				 channel->max_power * 2,
-				 min((u32) MAX_RATE_POWER,
-				 (u32) regulatory->power_limit), false);
+	ath9k_hw_apply_txpower(ah, chan);
 
 	/* Write analog registers */
 	if (!ath9k_hw_set_rf_regs(ah, chan, freqIndex)) {
diff --git a/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c b/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c
index 51398f0..d7a5ca7 100644
--- a/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c
+++ b/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c
@@ -3021,6 +3021,10 @@
 		return (pBase->miscConfiguration >> 0x3) & 0x1;
 	case EEP_ANT_DIV_CTL1:
 		return eep->base_ext1.ant_div_control;
+	case EEP_ANTENNA_GAIN_5G:
+		return eep->modalHeader5G.antennaGain;
+	case EEP_ANTENNA_GAIN_2G:
+		return eep->modalHeader2G.antennaGain;
 	default:
 		return 0;
 	}
@@ -4764,20 +4768,14 @@
 static void ar9003_hw_set_power_per_rate_table(struct ath_hw *ah,
 					       struct ath9k_channel *chan,
 					       u8 *pPwrArray, u16 cfgCtl,
-					       u8 twiceAntennaReduction,
-					       u8 twiceMaxRegulatoryPower,
+					       u8 antenna_reduction,
 					       u16 powerLimit)
 {
-	struct ath_regulatory *regulatory = ath9k_hw_regulatory(ah);
 	struct ath_common *common = ath9k_hw_common(ah);
 	struct ar9300_eeprom *pEepData = &ah->eeprom.ar9300_eep;
 	u16 twiceMaxEdgePower = MAX_RATE_POWER;
-	static const u16 tpScaleReductionTable[5] = {
-		0, 3, 6, 9, MAX_RATE_POWER
-	};
 	int i;
-	int16_t  twiceLargestAntenna;
-	u16 scaledPower = 0, minCtlPower, maxRegAllowedPower;
+	u16 scaledPower = 0, minCtlPower;
 	static const u16 ctlModesFor11a[] = {
 		CTL_11A, CTL_5GHT20, CTL_11A_EXT, CTL_5GHT40
 	};
@@ -4795,28 +4793,7 @@
 	bool is2ghz = IS_CHAN_2GHZ(chan);
 
 	ath9k_hw_get_channel_centers(ah, chan, &centers);
-
-	/* Compute TxPower reduction due to Antenna Gain */
-	if (is2ghz)
-		twiceLargestAntenna = pEepData->modalHeader2G.antennaGain;
-	else
-		twiceLargestAntenna = pEepData->modalHeader5G.antennaGain;
-
-	twiceLargestAntenna = (int16_t)min((twiceAntennaReduction) -
-				twiceLargestAntenna, 0);
-
-	/*
-	 * scaledPower is the minimum of the user input power level
-	 * and the regulatory allowed power level
-	 */
-	maxRegAllowedPower = twiceMaxRegulatoryPower + twiceLargestAntenna;
-
-	if (regulatory->tp_scale != ATH9K_TP_SCALE_MAX) {
-		maxRegAllowedPower -=
-			(tpScaleReductionTable[(regulatory->tp_scale)] * 2);
-	}
-
-	scaledPower = min(powerLimit, maxRegAllowedPower);
+	scaledPower = powerLimit - antenna_reduction;
 
 	/*
 	 * Reduce scaled Power by number of chains active to get
@@ -5003,7 +4980,6 @@
 static void ath9k_hw_ar9300_set_txpower(struct ath_hw *ah,
 					struct ath9k_channel *chan, u16 cfgCtl,
 					u8 twiceAntennaReduction,
-					u8 twiceMaxRegulatoryPower,
 					u8 powerLimit, bool test)
 {
 	struct ath_regulatory *regulatory = ath9k_hw_regulatory(ah);
@@ -5056,7 +5032,6 @@
 	ar9003_hw_set_power_per_rate_table(ah, chan,
 					   targetPowerValT2, cfgCtl,
 					   twiceAntennaReduction,
-					   twiceMaxRegulatoryPower,
 					   powerLimit);
 
 	if (ah->eep_ops->get_eeprom(ah, EEP_PAPRD)) {
diff --git a/drivers/net/wireless/ath/ath9k/ar9003_paprd.c b/drivers/net/wireless/ath/ath9k/ar9003_paprd.c
index 609acb2..a1a08b3 100644
--- a/drivers/net/wireless/ath/ath9k/ar9003_paprd.c
+++ b/drivers/net/wireless/ath/ath9k/ar9003_paprd.c
@@ -19,7 +19,6 @@
 
 void ar9003_paprd_enable(struct ath_hw *ah, bool val)
 {
-	struct ath_regulatory *regulatory = ath9k_hw_regulatory(ah);
 	struct ath9k_channel *chan = ah->curchan;
 	struct ar9300_eeprom *eep = &ah->eeprom.ar9300_eep;
 
@@ -54,13 +53,7 @@
 
 	if (val) {
 		ah->paprd_table_write_done = true;
-
-		ah->eep_ops->set_txpower(ah, chan,
-				ath9k_regd_get_ctl(regulatory, chan),
-				chan->chan->max_antenna_gain * 2,
-				chan->chan->max_power * 2,
-				min((u32) MAX_RATE_POWER,
-				(u32) regulatory->power_limit), false);
+		ath9k_hw_apply_txpower(ah, chan);
 	}
 
 	REG_RMW_FIELD(ah, AR_PHY_PAPRD_CTRL0_B0,
diff --git a/drivers/net/wireless/ath/ath9k/ar9003_phy.c b/drivers/net/wireless/ath/ath9k/ar9003_phy.c
index 7db6e86..779f407 100644
--- a/drivers/net/wireless/ath/ath9k/ar9003_phy.c
+++ b/drivers/net/wireless/ath/ath9k/ar9003_phy.c
@@ -631,9 +631,7 @@
 static int ar9003_hw_process_ini(struct ath_hw *ah,
 				 struct ath9k_channel *chan)
 {
-	struct ath_regulatory *regulatory = ath9k_hw_regulatory(ah);
 	unsigned int regWrites = 0, i;
-	struct ieee80211_channel *channel = chan->chan;
 	u32 modesIndex;
 
 	switch (chan->chanmode) {
@@ -693,14 +691,7 @@
 	ar9003_hw_override_ini(ah);
 	ar9003_hw_set_channel_regs(ah, chan);
 	ar9003_hw_set_chain_masks(ah, ah->rxchainmask, ah->txchainmask);
-
-	/* Set TX power */
-	ah->eep_ops->set_txpower(ah, chan,
-				 ath9k_regd_get_ctl(regulatory, chan),
-				 channel->max_antenna_gain * 2,
-				 channel->max_power * 2,
-				 min((u32) MAX_RATE_POWER,
-				 (u32) regulatory->power_limit), false);
+	ath9k_hw_apply_txpower(ah, chan);
 
 	return 0;
 }
diff --git a/drivers/net/wireless/ath/ath9k/common.c b/drivers/net/wireless/ath/ath9k/common.c
index dc705a2..905f1b3 100644
--- a/drivers/net/wireless/ath/ath9k/common.c
+++ b/drivers/net/wireless/ath/ath9k/common.c
@@ -161,10 +161,12 @@
 void ath9k_cmn_update_txpow(struct ath_hw *ah, u16 cur_txpow,
 			    u16 new_txpow, u16 *txpower)
 {
-	if (cur_txpow != new_txpow) {
+	struct ath_regulatory *reg = ath9k_hw_regulatory(ah);
+
+	if (reg->power_limit != new_txpow) {
 		ath9k_hw_set_txpowerlimit(ah, new_txpow, false);
 		/* read back in case value is clamped */
-		*txpower = ath9k_hw_regulatory(ah)->power_limit;
+		*txpower = reg->max_power_level;
 	}
 }
 EXPORT_SYMBOL(ath9k_cmn_update_txpow);
diff --git a/drivers/net/wireless/ath/ath9k/eeprom.h b/drivers/net/wireless/ath/ath9k/eeprom.h
index 5d92f96..909a224 100644
--- a/drivers/net/wireless/ath/ath9k/eeprom.h
+++ b/drivers/net/wireless/ath/ath9k/eeprom.h
@@ -248,7 +248,9 @@
 	EEP_PAPRD,
 	EEP_MODAL_VER,
 	EEP_ANT_DIV_CTL1,
-	EEP_CHAIN_MASK_REDUCE
+	EEP_CHAIN_MASK_REDUCE,
+	EEP_ANTENNA_GAIN_2G,
+	EEP_ANTENNA_GAIN_5G
 };
 
 enum ar5416_rates {
@@ -652,8 +654,7 @@
 	void (*set_addac)(struct ath_hw *hw, struct ath9k_channel *chan);
 	void (*set_txpower)(struct ath_hw *hw, struct ath9k_channel *chan,
 			   u16 cfgCtl, u8 twiceAntennaReduction,
-			   u8 twiceMaxRegulatoryPower, u8 powerLimit,
-			   bool test);
+			   u8 powerLimit, bool test);
 	u16 (*get_spur_channel)(struct ath_hw *ah, u16 i, bool is2GHz);
 };
 
diff --git a/drivers/net/wireless/ath/ath9k/eeprom_4k.c b/drivers/net/wireless/ath/ath9k/eeprom_4k.c
index 303560e..ab6811d 100644
--- a/drivers/net/wireless/ath/ath9k/eeprom_4k.c
+++ b/drivers/net/wireless/ath/ath9k/eeprom_4k.c
@@ -350,6 +350,8 @@
 		return pModal->antdiv_ctl1;
 	case EEP_TXGAIN_TYPE:
 		return pBase->txGainType;
+	case EEP_ANTENNA_GAIN_2G:
+		return pModal->antennaGainCh[0];
 	default:
 		return 0;
 	}
@@ -462,8 +464,7 @@
 						 struct ath9k_channel *chan,
 						 int16_t *ratesArray,
 						 u16 cfgCtl,
-						 u16 AntennaReduction,
-						 u16 twiceMaxRegulatoryPower,
+						 u16 antenna_reduction,
 						 u16 powerLimit)
 {
 #define CMP_TEST_GRP \
@@ -472,20 +473,16 @@
 	|| (((cfgCtl & ~CTL_MODE_M) | (pCtlMode[ctlMode] & CTL_MODE_M)) == \
 	    ((pEepData->ctlIndex[i] & CTL_MODE_M) | SD_NO_CTL))
 
-	struct ath_regulatory *regulatory = ath9k_hw_regulatory(ah);
 	int i;
-	int16_t twiceLargestAntenna;
 	u16 twiceMinEdgePower;
 	u16 twiceMaxEdgePower = MAX_RATE_POWER;
-	u16 scaledPower = 0, minCtlPower, maxRegAllowedPower;
+	u16 scaledPower = 0, minCtlPower;
 	u16 numCtlModes;
 	const u16 *pCtlMode;
 	u16 ctlMode, freq;
 	struct chan_centers centers;
 	struct cal_ctl_data_4k *rep;
 	struct ar5416_eeprom_4k *pEepData = &ah->eeprom.map4k;
-	static const u16 tpScaleReductionTable[5] =
-		{ 0, 3, 6, 9, MAX_RATE_POWER };
 	struct cal_target_power_leg targetPowerOfdm, targetPowerCck = {
 		0, { 0, 0, 0, 0}
 	};
@@ -503,19 +500,7 @@
 
 	ath9k_hw_get_channel_centers(ah, chan, &centers);
 
-	twiceLargestAntenna = pEepData->modalHeader.antennaGainCh[0];
-	twiceLargestAntenna = (int16_t)min(AntennaReduction -
-					   twiceLargestAntenna, 0);
-
-	maxRegAllowedPower = twiceMaxRegulatoryPower + twiceLargestAntenna;
-	if (regulatory->tp_scale != ATH9K_TP_SCALE_MAX) {
-		maxRegAllowedPower -=
-			(tpScaleReductionTable[(regulatory->tp_scale)] * 2);
-	}
-
-	scaledPower = min(powerLimit, maxRegAllowedPower);
-	scaledPower = max((u16)0, scaledPower);
-
+	scaledPower = powerLimit - antenna_reduction;
 	numCtlModes = ARRAY_SIZE(ctlModesFor11g) - SUB_NUM_CTL_MODES_AT_2G_40;
 	pCtlMode = ctlModesFor11g;
 
@@ -671,7 +656,6 @@
 				    struct ath9k_channel *chan,
 				    u16 cfgCtl,
 				    u8 twiceAntennaReduction,
-				    u8 twiceMaxRegulatoryPower,
 				    u8 powerLimit, bool test)
 {
 	struct ath_regulatory *regulatory = ath9k_hw_regulatory(ah);
@@ -691,7 +675,6 @@
 	ath9k_hw_set_4k_power_per_rate_table(ah, chan,
 					     &ratesArray[0], cfgCtl,
 					     twiceAntennaReduction,
-					     twiceMaxRegulatoryPower,
 					     powerLimit);
 
 	ath9k_hw_set_4k_power_cal_table(ah, chan);
diff --git a/drivers/net/wireless/ath/ath9k/eeprom_9287.c b/drivers/net/wireless/ath/ath9k/eeprom_9287.c
index 6698b72..90d771f 100644
--- a/drivers/net/wireless/ath/ath9k/eeprom_9287.c
+++ b/drivers/net/wireless/ath/ath9k/eeprom_9287.c
@@ -336,6 +336,9 @@
 			return pBase->tempSensSlopePalOn;
 		else
 			return 0;
+	case EEP_ANTENNA_GAIN_2G:
+		return max_t(u8, pModal->antennaGainCh[0],
+				 pModal->antennaGainCh[1]);
 	default:
 		return 0;
 	}
@@ -554,8 +557,7 @@
 						     struct ath9k_channel *chan,
 						     int16_t *ratesArray,
 						     u16 cfgCtl,
-						     u16 AntennaReduction,
-						     u16 twiceMaxRegulatoryPower,
+						     u16 antenna_reduction,
 						     u16 powerLimit)
 {
 #define CMP_CTL \
@@ -569,12 +571,8 @@
 #define REDUCE_SCALED_POWER_BY_TWO_CHAIN     6
 #define REDUCE_SCALED_POWER_BY_THREE_CHAIN   10
 
-	struct ath_regulatory *regulatory = ath9k_hw_regulatory(ah);
 	u16 twiceMaxEdgePower = MAX_RATE_POWER;
-	static const u16 tpScaleReductionTable[5] =
-		{ 0, 3, 6, 9, MAX_RATE_POWER };
 	int i;
-	int16_t twiceLargestAntenna;
 	struct cal_ctl_data_ar9287 *rep;
 	struct cal_target_power_leg targetPowerOfdm = {0, {0, 0, 0, 0} },
 				    targetPowerCck = {0, {0, 0, 0, 0} };
@@ -582,7 +580,7 @@
 				    targetPowerCckExt = {0, {0, 0, 0, 0} };
 	struct cal_target_power_ht targetPowerHt20,
 				    targetPowerHt40 = {0, {0, 0, 0, 0} };
-	u16 scaledPower = 0, minCtlPower, maxRegAllowedPower;
+	u16 scaledPower = 0, minCtlPower;
 	static const u16 ctlModesFor11g[] = {
 		CTL_11B, CTL_11G, CTL_2GHT20,
 		CTL_11B_EXT, CTL_11G_EXT, CTL_2GHT40
@@ -597,24 +595,7 @@
 	tx_chainmask = ah->txchainmask;
 
 	ath9k_hw_get_channel_centers(ah, chan, &centers);
-
-	/* Compute TxPower reduction due to Antenna Gain */
-	twiceLargestAntenna = max(pEepData->modalHeader.antennaGainCh[0],
-				  pEepData->modalHeader.antennaGainCh[1]);
-	twiceLargestAntenna = (int16_t)min((AntennaReduction) -
-					   twiceLargestAntenna, 0);
-
-	/*
-	 * scaledPower is the minimum of the user input power level
-	 * and the regulatory allowed power level.
-	 */
-	maxRegAllowedPower = twiceMaxRegulatoryPower + twiceLargestAntenna;
-
-	if (regulatory->tp_scale != ATH9K_TP_SCALE_MAX)
-		maxRegAllowedPower -=
-			(tpScaleReductionTable[(regulatory->tp_scale)] * 2);
-
-	scaledPower = min(powerLimit, maxRegAllowedPower);
+	scaledPower = powerLimit - antenna_reduction;
 
 	/*
 	 * Reduce scaled Power by number of chains active
@@ -815,7 +796,6 @@
 static void ath9k_hw_ar9287_set_txpower(struct ath_hw *ah,
 					struct ath9k_channel *chan, u16 cfgCtl,
 					u8 twiceAntennaReduction,
-					u8 twiceMaxRegulatoryPower,
 					u8 powerLimit, bool test)
 {
 	struct ath_regulatory *regulatory = ath9k_hw_regulatory(ah);
@@ -834,7 +814,6 @@
 	ath9k_hw_set_ar9287_power_per_rate_table(ah, chan,
 						 &ratesArray[0], cfgCtl,
 						 twiceAntennaReduction,
-						 twiceMaxRegulatoryPower,
 						 powerLimit);
 
 	ath9k_hw_set_ar9287_power_cal_table(ah, chan);
diff --git a/drivers/net/wireless/ath/ath9k/eeprom_def.c b/drivers/net/wireless/ath/ath9k/eeprom_def.c
index eda681f..e175e20 100644
--- a/drivers/net/wireless/ath/ath9k/eeprom_def.c
+++ b/drivers/net/wireless/ath/ath9k/eeprom_def.c
@@ -400,6 +400,7 @@
 	struct ar5416_eeprom_def *eep = &ah->eeprom.def;
 	struct modal_eep_header *pModal = eep->modalHeader;
 	struct base_eep_header *pBase = &eep->baseEepHeader;
+	int band = 0;
 
 	switch (param) {
 	case EEP_NFTHRESH_5:
@@ -467,6 +468,14 @@
 			return pBase->pwr_table_offset;
 		else
 			return AR5416_PWR_TABLE_OFFSET_DB;
+	case EEP_ANTENNA_GAIN_2G:
+		band = 1;
+		/* fall through */
+	case EEP_ANTENNA_GAIN_5G:
+		return max_t(u8, max_t(u8,
+			pModal[band].antennaGainCh[0],
+			pModal[band].antennaGainCh[1]),
+			pModal[band].antennaGainCh[2]);
 	default:
 		return 0;
 	}
@@ -986,21 +995,15 @@
 						  struct ath9k_channel *chan,
 						  int16_t *ratesArray,
 						  u16 cfgCtl,
-						  u16 AntennaReduction,
-						  u16 twiceMaxRegulatoryPower,
+						  u16 antenna_reduction,
 						  u16 powerLimit)
 {
 #define REDUCE_SCALED_POWER_BY_TWO_CHAIN     6  /* 10*log10(2)*2 */
 #define REDUCE_SCALED_POWER_BY_THREE_CHAIN   9 /* 10*log10(3)*2 */
 
-	struct ath_regulatory *regulatory = ath9k_hw_regulatory(ah);
 	struct ar5416_eeprom_def *pEepData = &ah->eeprom.def;
 	u16 twiceMaxEdgePower = MAX_RATE_POWER;
-	static const u16 tpScaleReductionTable[5] =
-		{ 0, 3, 6, 9, MAX_RATE_POWER };
-
 	int i;
-	int16_t twiceLargestAntenna;
 	struct cal_ctl_data *rep;
 	struct cal_target_power_leg targetPowerOfdm, targetPowerCck = {
 		0, { 0, 0, 0, 0}
@@ -1012,7 +1015,7 @@
 	struct cal_target_power_ht targetPowerHt20, targetPowerHt40 = {
 		0, {0, 0, 0, 0}
 	};
-	u16 scaledPower = 0, minCtlPower, maxRegAllowedPower;
+	u16 scaledPower = 0, minCtlPower;
 	static const u16 ctlModesFor11a[] = {
 		CTL_11A, CTL_5GHT20, CTL_11A_EXT, CTL_5GHT40
 	};
@@ -1031,27 +1034,7 @@
 
 	ath9k_hw_get_channel_centers(ah, chan, &centers);
 
-	twiceLargestAntenna = max(
-		pEepData->modalHeader
-			[IS_CHAN_2GHZ(chan)].antennaGainCh[0],
-		pEepData->modalHeader
-			[IS_CHAN_2GHZ(chan)].antennaGainCh[1]);
-
-	twiceLargestAntenna = max((u8)twiceLargestAntenna,
-				  pEepData->modalHeader
-				  [IS_CHAN_2GHZ(chan)].antennaGainCh[2]);
-
-	twiceLargestAntenna = (int16_t)min(AntennaReduction -
-					   twiceLargestAntenna, 0);
-
-	maxRegAllowedPower = twiceMaxRegulatoryPower + twiceLargestAntenna;
-
-	if (regulatory->tp_scale != ATH9K_TP_SCALE_MAX) {
-		maxRegAllowedPower -=
-			(tpScaleReductionTable[(regulatory->tp_scale)] * 2);
-	}
-
-	scaledPower = min(powerLimit, maxRegAllowedPower);
+	scaledPower = powerLimit - antenna_reduction;
 
 	switch (ar5416_get_ntxchains(tx_chainmask)) {
 	case 1:
@@ -1256,7 +1239,6 @@
 				    struct ath9k_channel *chan,
 				    u16 cfgCtl,
 				    u8 twiceAntennaReduction,
-				    u8 twiceMaxRegulatoryPower,
 				    u8 powerLimit, bool test)
 {
 #define RT_AR_DELTA(x) (ratesArray[x] - cck_ofdm_delta)
@@ -1278,7 +1260,6 @@
 	ath9k_hw_set_def_power_per_rate_table(ah, chan,
 					       &ratesArray[0], cfgCtl,
 					       twiceAntennaReduction,
-					       twiceMaxRegulatoryPower,
 					       powerLimit);
 
 	ath9k_hw_set_def_power_cal_table(ah, chan);
diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c
index 42ebe8f..949656d 100644
--- a/drivers/net/wireless/ath/ath9k/hw.c
+++ b/drivers/net/wireless/ath/ath9k/hw.c
@@ -433,7 +433,6 @@
 
 	regulatory->country_code = CTRY_DEFAULT;
 	regulatory->power_limit = MAX_RATE_POWER;
-	regulatory->tp_scale = ATH9K_TP_SCALE_MAX;
 
 	ah->hw_version.magic = AR5416_MAGIC;
 	ah->hw_version.subvendorid = 0;
@@ -1389,9 +1388,7 @@
 static bool ath9k_hw_channel_change(struct ath_hw *ah,
 				    struct ath9k_channel *chan)
 {
-	struct ath_regulatory *regulatory = ath9k_hw_regulatory(ah);
 	struct ath_common *common = ath9k_hw_common(ah);
-	struct ieee80211_channel *channel = chan->chan;
 	u32 qnum;
 	int r;
 
@@ -1416,14 +1413,7 @@
 		return false;
 	}
 	ath9k_hw_set_clockrate(ah);
-
-	ah->eep_ops->set_txpower(ah, chan,
-			     ath9k_regd_get_ctl(regulatory, chan),
-			     channel->max_antenna_gain * 2,
-			     channel->max_power * 2,
-			     min((u32) MAX_RATE_POWER,
-			     (u32) regulatory->power_limit), false);
-
+	ath9k_hw_apply_txpower(ah, chan);
 	ath9k_hw_rfbus_done(ah);
 
 	if (IS_CHAN_OFDM(chan) || IS_CHAN_HT(chan))
@@ -2498,23 +2488,56 @@
 }
 EXPORT_SYMBOL(ath9k_hw_disable);
 
-void ath9k_hw_set_txpowerlimit(struct ath_hw *ah, u32 limit, bool test)
+static int get_antenna_gain(struct ath_hw *ah, struct ath9k_channel *chan)
 {
-	struct ath_regulatory *regulatory = ath9k_hw_regulatory(ah);
-	struct ath9k_channel *chan = ah->curchan;
-	struct ieee80211_channel *channel = chan->chan;
-	int reg_pwr = min_t(int, MAX_RATE_POWER, limit);
-	int chan_pwr = channel->max_power * 2;
+	enum eeprom_param gain_param;
 
-	if (test)
-		reg_pwr = chan_pwr = MAX_RATE_POWER;
+	if (IS_CHAN_2GHZ(chan))
+		gain_param = EEP_ANTENNA_GAIN_2G;
+	else
+		gain_param = EEP_ANTENNA_GAIN_5G;
 
-	regulatory->power_limit = reg_pwr;
+	return ah->eep_ops->get_eeprom(ah, gain_param);
+}
+
+void ath9k_hw_apply_txpower(struct ath_hw *ah, struct ath9k_channel *chan)
+{
+	struct ath_regulatory *reg = ath9k_hw_regulatory(ah);
+	struct ieee80211_channel *channel;
+	int chan_pwr, new_pwr, max_gain;
+	int ant_gain, ant_reduction = 0;
+
+	if (!chan)
+		return;
+
+	channel = chan->chan;
+	chan_pwr = min_t(int, channel->max_power * 2, MAX_RATE_POWER);
+	new_pwr = min_t(int, chan_pwr, reg->power_limit);
+	max_gain = chan_pwr - new_pwr + channel->max_antenna_gain * 2;
+
+	ant_gain = get_antenna_gain(ah, chan);
+	if (ant_gain > max_gain)
+		ant_reduction = ant_gain - max_gain;
 
 	ah->eep_ops->set_txpower(ah, chan,
-				 ath9k_regd_get_ctl(regulatory, chan),
-				 channel->max_antenna_gain * 2,
-				 chan_pwr, reg_pwr, test);
+				 ath9k_regd_get_ctl(reg, chan),
+				 ant_reduction, new_pwr, false);
+}
+
+void ath9k_hw_set_txpowerlimit(struct ath_hw *ah, u32 limit, bool test)
+{
+	struct ath_regulatory *reg = ath9k_hw_regulatory(ah);
+	struct ath9k_channel *chan = ah->curchan;
+	struct ieee80211_channel *channel = chan->chan;
+
+	reg->power_limit = min_t(int, limit, MAX_RATE_POWER);
+	if (test)
+		channel->max_power = MAX_RATE_POWER / 2;
+
+	ath9k_hw_apply_txpower(ah, chan);
+
+	if (test)
+		channel->max_power = DIV_ROUND_UP(reg->max_power_level, 2);
 }
 EXPORT_SYMBOL(ath9k_hw_set_txpowerlimit);
 
diff --git a/drivers/net/wireless/ath/ath9k/hw.h b/drivers/net/wireless/ath/ath9k/hw.h
index 24889f7..684c33c 100644
--- a/drivers/net/wireless/ath/ath9k/hw.h
+++ b/drivers/net/wireless/ath/ath9k/hw.h
@@ -390,14 +390,6 @@
 	ATH9K_PM_UNDEFINED
 };
 
-enum ath9k_tp_scale {
-	ATH9K_TP_SCALE_MAX = 0,
-	ATH9K_TP_SCALE_50,
-	ATH9K_TP_SCALE_25,
-	ATH9K_TP_SCALE_12,
-	ATH9K_TP_SCALE_MIN
-};
-
 enum ser_reg_mode {
 	SER_REG_MODE_OFF = 0,
 	SER_REG_MODE_ON = 1,
@@ -968,6 +960,7 @@
 /* PHY */
 void ath9k_hw_get_delta_slope_vals(struct ath_hw *ah, u32 coef_scaled,
 				   u32 *coef_mantissa, u32 *coef_exponent);
+void ath9k_hw_apply_txpower(struct ath_hw *ah, struct ath9k_channel *chan);
 
 /*
  * Code Specific to AR5008, AR9001 or AR9002,
diff --git a/drivers/net/wireless/ath/ath9k/init.c b/drivers/net/wireless/ath/ath9k/init.c
index 39514de..af1b325 100644
--- a/drivers/net/wireless/ath/ath9k/init.c
+++ b/drivers/net/wireless/ath/ath9k/init.c
@@ -626,7 +626,6 @@
 	struct ieee80211_supported_band *sband;
 	struct ieee80211_channel *chan;
 	struct ath_hw *ah = sc->sc_ah;
-	struct ath_regulatory *reg = ath9k_hw_regulatory(ah);
 	int i;
 
 	sband = &sc->sbands[band];
@@ -635,7 +634,6 @@
 		ah->curchan = &ah->channels[chan->hw_value];
 		ath9k_cmn_update_ichannel(ah->curchan, chan, NL80211_CHAN_HT20);
 		ath9k_hw_set_txpowerlimit(ah, MAX_RATE_POWER, true);
-		chan->max_power = reg->max_power_level / 2;
 	}
 }