1 files changed, 68 insertions, 0 deletions

diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index 034256c399dd..3077f16a149d 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -2645,6 +2645,40 @@ static int btusb_recv_event_realtek(struct hci_dev *hdev, struct sk_buff *skb)
 	return hci_recv_frame(hdev, skb);
 }
 
+static void btusb_mtk_claim_iso_intf(struct btusb_data *data)
+{
+	struct btmtk_data *btmtk_data = hci_get_priv(data->hdev);
+	int err;
+
+	err = usb_driver_claim_interface(&btusb_driver,
+					 btmtk_data->isopkt_intf, data);
+	if (err < 0) {
+		btmtk_data->isopkt_intf = NULL;
+		bt_dev_err(data->hdev, "Failed to claim iso interface");
+		return;
+	}
+
+	set_bit(BTMTK_ISOPKT_OVER_INTR, &btmtk_data->flags);
+}
+
+static void btusb_mtk_release_iso_intf(struct btusb_data *data)
+{
+	struct btmtk_data *btmtk_data = hci_get_priv(data->hdev);
+
+	if (btmtk_data->isopkt_intf) {
+		usb_kill_anchored_urbs(&btmtk_data->isopkt_anchor);
+		clear_bit(BTMTK_ISOPKT_RUNNING, &btmtk_data->flags);
+
+		dev_kfree_skb_irq(btmtk_data->isopkt_skb);
+		btmtk_data->isopkt_skb = NULL;
+		usb_set_intfdata(btmtk_data->isopkt_intf, NULL);
+		usb_driver_release_interface(&btusb_driver,
+					     btmtk_data->isopkt_intf);
+	}
+
+	clear_bit(BTMTK_ISOPKT_OVER_INTR, &btmtk_data->flags);
+}
+
 static int btusb_mtk_reset(struct hci_dev *hdev, void *rst_data)
 {
 	struct btusb_data *data = hci_get_drvdata(hdev);
@@ -2661,6 +2695,9 @@ static int btusb_mtk_reset(struct hci_dev *hdev, void *rst_data)
 	if (err < 0)
 		return err;
 
+	if (test_bit(BTMTK_ISOPKT_RUNNING, &btmtk_data->flags))
+		btusb_mtk_release_iso_intf(data);
+
 	btusb_stop_traffic(data);
 	usb_kill_anchored_urbs(&data->tx_anchor);
 
@@ -2672,6 +2709,23 @@ static int btusb_mtk_reset(struct hci_dev *hdev, void *rst_data)
 	return err;
 }
 
+static int btusb_send_frame_mtk(struct hci_dev *hdev, struct sk_buff *skb)
+{
+	struct urb *urb;
+
+	BT_DBG("%s", hdev->name);
+
+	if (hci_skb_pkt_type(skb) == HCI_ISODATA_PKT) {
+		urb = alloc_mtk_intr_urb(hdev, skb, btusb_tx_complete);
+		if (IS_ERR(urb))
+			return PTR_ERR(urb);
+
+		return submit_or_queue_tx_urb(hdev, urb);
+	} else {
+		return btusb_send_frame(hdev, skb);
+	}
+}
+
 static int btusb_mtk_setup(struct hci_dev *hdev)
 {
 	struct btusb_data *data = hci_get_drvdata(hdev);
@@ -2686,11 +2740,22 @@ static int btusb_mtk_setup(struct hci_dev *hdev)
 	btmtk_data->ctrl_anchor = &data->ctrl_anchor;
 	btmtk_data->reset_sync = btusb_mtk_reset;
 
+	/* Claim ISO data interface and endpoint */
+	btmtk_data->isopkt_intf = usb_ifnum_to_if(data->udev, MTK_ISO_IFNUM);
+	if (btmtk_data->isopkt_intf)
+		btusb_mtk_claim_iso_intf(data);
+
 	return btmtk_usb_setup(hdev);
 }
 
 static int btusb_mtk_shutdown(struct hci_dev *hdev)
 {
+	struct btusb_data *data = hci_get_drvdata(hdev);
+	struct btmtk_data *btmtk_data = hci_get_priv(hdev);
+
+	if (test_bit(BTMTK_ISOPKT_RUNNING, &btmtk_data->flags))
+		btusb_mtk_release_iso_intf(data);
+
 	return btmtk_usb_shutdown(hdev);
 }
 
@@ -3797,9 +3862,12 @@ static int btusb_probe(struct usb_interface *intf,
 		hdev->manufacturer = 70;
 		hdev->cmd_timeout = btmtk_reset_sync;
 		hdev->set_bdaddr = btmtk_set_bdaddr;
+		hdev->send = btusb_send_frame_mtk;
 		set_bit(HCI_QUIRK_BROKEN_ENHANCED_SETUP_SYNC_CONN, &hdev->quirks);
 		set_bit(HCI_QUIRK_NON_PERSISTENT_SETUP, &hdev->quirks);
 		data->recv_acl = btmtk_usb_recv_acl;
+		data->suspend = btmtk_usb_suspend;
+		data->resume = btmtk_usb_resume;
 	}
 
 	if (id->driver_info & BTUSB_SWAVE) {