ath9k: Add a HW flag for FCC

Fast Channel Change across 2G/5G bands is supported
only by AR9462 and AR9565. Add a HW capability field
to indicate this.
Signed-off-by: NSujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

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

@@ -2610,6 +2610,13 @@ int ath9k_hw_fill_cap_info(struct ath_hw *ah)
 	    ah->eep_ops->get_eeprom(ah, EEP_PAPRD))
 			pCap->hw_caps |= ATH9K_HW_CAP_PAPRD;
 
+	/*
+	 * Fast channel change across bands is available
+	 * only for AR9462 and AR9565.
+	 */
+	if (AR_SREV_9462(ah) || AR_SREV_9565(ah))
+		pCap->hw_caps |= ATH9K_HW_CAP_FCC_BAND_SWITCH;
+
 	return 0;
 }
 

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

@@ -247,6 +247,7 @@ enum ath9k_hw_caps {
 	ATH9K_HW_CAP_DFS			= BIT(16),
 	ATH9K_HW_WOW_DEVICE_CAPABLE		= BIT(17),
 	ATH9K_HW_CAP_PAPRD			= BIT(18),
+	ATH9K_HW_CAP_FCC_BAND_SWITCH		= BIT(19),
 };
 
 /*