ath9k_hw: Add a helper function to get spur channel pointer from cal data for AR9003 family

This helper function would be used for AR9485.
Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

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

@@ -4731,6 +4731,16 @@ s32 ar9003_hw_get_rx_gain_idx(struct ath_hw *ah)
 	return (eep->baseEepHeader.txrxgain) & 0xf; /* bits 3:0 */
 }
 
+u8 *ar9003_get_spur_chan_ptr(struct ath_hw *ah, bool is_2ghz)
+{
+	struct ar9300_eeprom *eep = &ah->eeprom.ar9300_eep;
+
+	if (is_2ghz)
+		return eep->modalHeader2G.spurChans;
+	else
+		return eep->modalHeader5G.spurChans;
+}
+
 const struct eeprom_ops eep_ar9300_ops = {
 	.check_eeprom = ath9k_hw_ar9300_check_eeprom,
 	.get_eeprom = ath9k_hw_ar9300_get_eeprom,

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

@@ -343,4 +343,5 @@ struct ar9300_eeprom {
 s32 ar9003_hw_get_tx_gain_idx(struct ath_hw *ah);
 s32 ar9003_hw_get_rx_gain_idx(struct ath_hw *ah);
 
+u8 *ar9003_get_spur_chan_ptr(struct ath_hw *ah, bool is_2ghz);
 #endif