ath9k_htc: Handle IDLE LED properly

Switch LED off/on when handling CONF_CHANGE_IDLE.
Not doing this would leave the radio LED on even
though the chip would be in full sleep mode.
Signed-off-by: NSujith <Sujith.Manoharan@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

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

@@ -1099,7 +1099,7 @@ static int ath9k_htc_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
 	return 0;
 }
 
-static int ath9k_htc_radio_enable(struct ieee80211_hw *hw)
+static int ath9k_htc_radio_enable(struct ieee80211_hw *hw, bool led)
 {
 	struct ath9k_htc_priv *priv = hw->priv;
 	struct ath_hw *ah = priv->ah;
@@ -1147,6 +1147,13 @@ static int ath9k_htc_radio_enable(struct ieee80211_hw *hw)
 	priv->tx_queues_stop = false;
 	spin_unlock_bh(&priv->tx_lock);
 
+	if (led) {
+		/* Enable LED */
+		ath9k_hw_cfg_output(ah, ah->led_pin,
+				    AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
+		ath9k_hw_set_gpio(ah, ah->led_pin, 0);
+	}
+
 	ieee80211_wake_queues(hw);
 
 	return ret;
@@ -1158,13 +1165,13 @@ static int ath9k_htc_start(struct ieee80211_hw *hw)
 	int ret = 0;
 
 	mutex_lock(&priv->mutex);
-	ret = ath9k_htc_radio_enable(hw);
+	ret = ath9k_htc_radio_enable(hw, false);
 	mutex_unlock(&priv->mutex);
 
 	return ret;
 }
 
-static void ath9k_htc_radio_disable(struct ieee80211_hw *hw)
+static void ath9k_htc_radio_disable(struct ieee80211_hw *hw, bool led)
 {
 	struct ath9k_htc_priv *priv = hw->priv;
 	struct ath_hw *ah = priv->ah;
@@ -1177,6 +1184,12 @@ static void ath9k_htc_radio_disable(struct ieee80211_hw *hw)
 		return;
 	}
 
+	if (led) {
+		/* Disable LED */
+		ath9k_hw_set_gpio(ah, ah->led_pin, 1);
+		ath9k_hw_cfg_gpio_input(ah, ah->led_pin);
+	}
+
 	/* Cancel all the running timers/work .. */
 	cancel_work_sync(&priv->ps_work);
 	cancel_delayed_work_sync(&priv->ath9k_ani_work);
@@ -1217,7 +1230,7 @@ static void ath9k_htc_stop(struct ieee80211_hw *hw)
 	struct ath9k_htc_priv *priv = hw->priv;
 
 	mutex_lock(&priv->mutex);
-	ath9k_htc_radio_disable(hw);
+	ath9k_htc_radio_disable(hw, false);
 	mutex_unlock(&priv->mutex);
 }
 
@@ -1337,7 +1350,7 @@ static int ath9k_htc_config(struct ieee80211_hw *hw, u32 changed)
 
 		if (enable_radio) {
 			ath9k_htc_setpower(priv, ATH9K_PM_AWAKE);
-			ath9k_htc_radio_enable(hw);
+			ath9k_htc_radio_enable(hw, true);
 			ath_print(common, ATH_DBG_CONFIG,
 				  "not-idle: enabling radio\n");
 		}
@@ -1389,10 +1402,9 @@ static int ath9k_htc_config(struct ieee80211_hw *hw, u32 changed)
 	if (priv->ps_idle) {
 		ath_print(common, ATH_DBG_CONFIG,
 			  "idle: disabling radio\n");
-		ath9k_htc_radio_disable(hw);
+		ath9k_htc_radio_disable(hw, true);
 	}
 
-
 	mutex_unlock(&priv->mutex);
 
 	return 0;