Bluetooth: add support to notify using SCO air mode

index 5f60e135aeb6..9ff2f7a9e131 100644
@@ -53,6 +53,9 @@
 #define HCI_NOTIFY_CONN_ADD		1
 #define HCI_NOTIFY_CONN_DEL		2
 #define HCI_NOTIFY_VOICE_SETTING	3
+#define HCI_NOTIFY_ENABLE_SCO_CVSD	4
+#define HCI_NOTIFY_ENABLE_SCO_TRANSP	5
+#define HCI_NOTIFY_DISABLE_SCO		6
 
 /* HCI bus types */
 #define HCI_VIRTUAL	0

index e245bc155cc2..07c34c55fc50 100644
@@ -122,8 +122,18 @@ static void hci_conn_cleanup(struct hci_conn *conn)
 
 	hci_conn_hash_del(hdev, conn);
 
-	if (hdev->notify)
-		hdev->notify(hdev, HCI_NOTIFY_CONN_DEL);
+	if (conn->type == SCO_LINK || conn->type == ESCO_LINK) {
+		switch (conn->setting & SCO_AIRMODE_MASK) {
+		case SCO_AIRMODE_CVSD:
+		case SCO_AIRMODE_TRANSP:
+			if (hdev->notify)
+				hdev->notify(hdev, HCI_NOTIFY_DISABLE_SCO);
+			break;
+		}
+	} else {
+		if (hdev->notify)
+			hdev->notify(hdev, HCI_NOTIFY_CONN_DEL);
+	}
 
 	hci_conn_del_sysfs(conn);
 

@@ -577,8 +587,15 @@ struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst,
 	hci_dev_hold(hdev);
 
 	hci_conn_hash_add(hdev, conn);
-	if (hdev->notify)
-		hdev->notify(hdev, HCI_NOTIFY_CONN_ADD);
+
+	/* The SCO and eSCO connections will only be notified when their
+	 * setup has been completed. This is different to ACL links which
+	 * can be notified right away.
+	 */
+	if (conn->type != SCO_LINK && conn->type != ESCO_LINK) {
+		if (hdev->notify)
+			hdev->notify(hdev, HCI_NOTIFY_CONN_ADD);
+	}
 
 	hci_conn_init_sysfs(conn);
 

index ddf77304aa8e..af396cb69602 100644
@@ -2607,8 +2607,16 @@ static void hci_conn_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
 	if (ev->status) {
 		hci_connect_cfm(conn, ev->status);
 		hci_conn_del(conn);
-	} else if (ev->link_type != ACL_LINK)
+	} else if (ev->link_type == SCO_LINK) {
+		switch (conn->setting & SCO_AIRMODE_MASK) {
+		case SCO_AIRMODE_CVSD:
+			if (hdev->notify)
+				hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD);
+			break;
+		}
+
 		hci_connect_cfm(conn, ev->status);
+	}
 
 unlock:
 	hci_dev_unlock(hdev);

@@ -4307,6 +4315,19 @@ static void hci_sync_conn_complete_evt(struct hci_dev *hdev,
 		break;
 	}
 
+	bt_dev_dbg(hdev, "SCO connected with air mode: %02x", ev->air_mode);
+
+	switch (conn->setting & SCO_AIRMODE_MASK) {
+	case SCO_AIRMODE_CVSD:
+		if (hdev->notify)
+			hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD);
+		break;
+	case SCO_AIRMODE_TRANSP:
+		if (hdev->notify)
+			hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_TRANSP);
+		break;
+	}
+
 	hci_connect_cfm(conn, ev->status);
 	if (ev->status)
 		hci_conn_del(conn);