[PATCH] Bluetooth: btusb: WBS support USB alternate setting 1

[hildawu]

From: Hilda Wu <hild...@realtek.com>

For WBS support, btusb driver could be set to alternate setting 1.

Signed-off-by: Hilda Wu <hild...@realtek.com>
---
 drivers/bluetooth/btusb.c | 16 +++++++++++-----
 1 file changed, 11 insertions(+), 5 deletions(-)

diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index c7cc8e594166..7942f9314fd7 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -453,6 +453,7 @@ static const struct dmi_system_id 
btusb_needs_reset_resume_table[] = {
 #define BTUSB_HW_RESET_ACTIVE  12
 #define BTUSB_TX_WAIT_VND_EVT  13
 #define BTUSB_WAKEUP_DISABLE   14
+#define BTUSB_WBS_ALT1         15
 
 struct btusb_data {
        struct hci_dev       *hdev;
@@ -1666,14 +1667,18 @@ static void btusb_work(struct work_struct *work)
                                new_alts = data->sco_num;
                        }
                } else if (data->air_mode == HCI_NOTIFY_ENABLE_SCO_TRANSP) {
-
-                       data->usb_alt6_packet_flow = true;
-
                        /* Check if Alt 6 is supported for Transparent audio */
-                       if (btusb_find_altsetting(data, 6))
+                       if (btusb_find_altsetting(data, 6)) {
+                               data->usb_alt6_packet_flow = true;
                                new_alts = 6;
-                       else
+                       } else if (test_bit(BTUSB_WBS_ALT1, &data->flags)) {
+                               if (btusb_find_altsetting(data, 1))
+                                       new_alts = 1;
+                               else
+                                       bt_dev_err(hdev, "Device does not 
support ALT setting 1");
+                       } else {
                                bt_dev_err(hdev, "Device does not support ALT 
setting 6");
+                       }
                }
 
                if (btusb_switch_alt_setting(hdev, new_alts) < 0)
@@ -3965,6 +3970,7 @@ static int btusb_probe(struct usb_interface *intf,
                 * (DEVICE_REMOTE_WAKEUP)
                 */
                set_bit(BTUSB_WAKEUP_DISABLE, &data->flags);
+               set_bit(BTUSB_WBS_ALT1, &data->flags);
 
                err = usb_autopm_get_interface(intf);
                if (err < 0)
-- 
2.17.1