ath9k: add functions to get paprd rate mask

This removes some code duplication with le32_to_cpu. This may also be
required for QCN550x support, to provide an abstraction over the
underlying EEPROM format.
Signed-off-by: Wenli Looi <wlooi@ucalgary.ca>
Acked-by: Toke Høiland-Jørgensen <toke@toke.dk>
Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>
Link: https://lore.kernel.org/r/20220320233010.123106-7-wlooi@ucalgary.ca

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

@@ -5449,8 +5449,6 @@ static void ath9k_hw_ar9300_set_txpower(struct ath_hw *ah,
 {
 	struct ath_regulatory *regulatory = ath9k_hw_regulatory(ah);
 	struct ath_common *common = ath9k_hw_common(ah);
-	struct ar9300_eeprom *eep = &ah->eeprom.ar9300_eep;
-	struct ar9300_modal_eep_header *modal_hdr;
 	u8 targetPowerValT2[ar9300RateSize];
 	u8 target_power_val_t2_eep[ar9300RateSize];
 	u8 targetPowerValT2_tpc[ar9300RateSize];
@@ -5465,17 +5463,12 @@ static void ath9k_hw_ar9300_set_txpower(struct ath_hw *ah,
 	ar9003_hw_get_target_power_eeprom(ah, chan, targetPowerValT2);
 
 	if (ar9003_is_paprd_enabled(ah)) {
-		if (IS_CHAN_2GHZ(chan))
-			modal_hdr = &eep->modalHeader2G;
-		else
-			modal_hdr = &eep->modalHeader5G;
-
 		ah->paprd_ratemask =
-			le32_to_cpu(modal_hdr->papdRateMaskHt20) &
+			ar9003_get_paprd_rate_mask_ht20(ah, IS_CHAN_2GHZ(chan)) &
 			AR9300_PAPRD_RATE_MASK;
 
 		ah->paprd_ratemask_ht40 =
-			le32_to_cpu(modal_hdr->papdRateMaskHt40) &
+			ar9003_get_paprd_rate_mask_ht40(ah, IS_CHAN_2GHZ(chan)) &
 			AR9300_PAPRD_RATE_MASK;
 
 		paprd_scale_factor = ar9003_get_paprd_scale_factor(ah, chan);
@@ -5592,23 +5585,33 @@ u8 *ar9003_get_spur_chan_ptr(struct ath_hw *ah, bool is2ghz)
 	return ar9003_modal_header(ah, is2ghz)->spurChans;
 }
 
+u32 ar9003_get_paprd_rate_mask_ht20(struct ath_hw *ah, bool is2ghz)
+{
+	return le32_to_cpu(ar9003_modal_header(ah, is2ghz)->papdRateMaskHt20);
+}
+
+u32 ar9003_get_paprd_rate_mask_ht40(struct ath_hw *ah, bool is2ghz)
+{
+	return le32_to_cpu(ar9003_modal_header(ah, is2ghz)->papdRateMaskHt40);
+}
+
 unsigned int ar9003_get_paprd_scale_factor(struct ath_hw *ah,
 					   struct ath9k_channel *chan)
 {
-	struct ar9300_eeprom *eep = &ah->eeprom.ar9300_eep;
+	bool is2ghz = IS_CHAN_2GHZ(chan);
 
-	if (IS_CHAN_2GHZ(chan))
-		return MS(le32_to_cpu(eep->modalHeader2G.papdRateMaskHt20),
+	if (is2ghz)
+		return MS(ar9003_get_paprd_rate_mask_ht20(ah, is2ghz),
 			  AR9300_PAPRD_SCALE_1);
 	else {
 		if (chan->channel >= 5700)
-			return MS(le32_to_cpu(eep->modalHeader5G.papdRateMaskHt20),
+			return MS(ar9003_get_paprd_rate_mask_ht20(ah, is2ghz),
 				  AR9300_PAPRD_SCALE_1);
 		else if (chan->channel >= 5400)
-			return MS(le32_to_cpu(eep->modalHeader5G.papdRateMaskHt40),
+			return MS(ar9003_get_paprd_rate_mask_ht40(ah, is2ghz),
 				  AR9300_PAPRD_SCALE_2);
 		else
-			return MS(le32_to_cpu(eep->modalHeader5G.papdRateMaskHt40),
+			return MS(ar9003_get_paprd_rate_mask_ht40(ah, is2ghz),
 				  AR9300_PAPRD_SCALE_1);
 	}
 }

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

@@ -363,6 +363,8 @@ u32 ar9003_hw_ant_ctrl_common_2_get(struct ath_hw *ah, bool is2ghz);
 
 u8 *ar9003_get_spur_chan_ptr(struct ath_hw *ah, bool is_2ghz);
 
+u32 ar9003_get_paprd_rate_mask_ht20(struct ath_hw *ah, bool is2ghz);
+u32 ar9003_get_paprd_rate_mask_ht40(struct ath_hw *ah, bool is2ghz);
 unsigned int ar9003_get_paprd_scale_factor(struct ath_hw *ah,
 					   struct ath9k_channel *chan);
 

drivers/net/wireless/ath/ath9k/ar9003_paprd.c

@@ -21,7 +21,7 @@
 void ar9003_paprd_enable(struct ath_hw *ah, bool val)
 {
 	struct ath9k_channel *chan = ah->curchan;
-	struct ar9300_eeprom *eep = &ah->eeprom.ar9300_eep;
+	bool is2ghz = IS_CHAN_2GHZ(chan);
 
 	/*
 	 * 3 bits for modalHeader5G.papdRateMaskHt20
@@ -36,17 +36,17 @@ void ar9003_paprd_enable(struct ath_hw *ah, bool val)
 	 * -- disable PAPRD for lower band 5GHz
 	 */
 
-	if (IS_CHAN_5GHZ(chan)) {
+	if (!is2ghz) {
 		if (chan->channel >= UPPER_5G_SUB_BAND_START) {
-			if (le32_to_cpu(eep->modalHeader5G.papdRateMaskHt20)
+			if (ar9003_get_paprd_rate_mask_ht20(ah, is2ghz)
 								  & BIT(30))
 				val = false;
 		} else if (chan->channel >= MID_5G_SUB_BAND_START) {
-			if (le32_to_cpu(eep->modalHeader5G.papdRateMaskHt20)
+			if (ar9003_get_paprd_rate_mask_ht20(ah, is2ghz)
 								  & BIT(29))
 				val = false;
 		} else {
-			if (le32_to_cpu(eep->modalHeader5G.papdRateMaskHt20)
+			if (ar9003_get_paprd_rate_mask_ht20(ah, is2ghz)
 								  & BIT(28))
 				val = false;
 		}