Bluetooth: btusb: add callback function in btusb suspend/resume

Add suspend/resum callback function in btusb_data which are reserved
for vendor specific usage during suspend/resume. hdev->suspend will be
added before stop traffic in btusb_suspend and hdev-> resume will be
added after resubmit urb in btusb_resume.

Signed-off-by: Chris Lu <chris.lu@mediatek.com>
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>

diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index f44bcd2ba55972ffad1d219dd423efa9bb28bd71..96f2e9d2a449361e3fce4d09831f0fd6794639d4 100644 (file)
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -895,6 +895,9 @@ struct btusb_data {
 
        int (*setup_on_usb)(struct hci_dev *hdev);
 
+       int (*suspend)(struct hci_dev *hdev);
+       int (*resume)(struct hci_dev *hdev);
+
        int oob_wake_irq;   /* irq for out-of-band wake-on-bt */
        unsigned cmd_timeout_cnt;
 
@@ -4769,6 +4772,9 @@ static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
 
        cancel_work_sync(&data->work);
 
+       if (data->suspend)
+               data->suspend(data->hdev);
+
        btusb_stop_traffic(data);
        usb_kill_anchored_urbs(&data->tx_anchor);
 
@@ -4872,6 +4878,9 @@ static int btusb_resume(struct usb_interface *intf)
                        btusb_submit_isoc_urb(hdev, GFP_NOIO);
        }
 
+       if (data->resume)
+               data->resume(hdev);
+
        spin_lock_irq(&data->txlock);
        play_deferred(data);
        clear_bit(BTUSB_SUSPENDING, &data->flags);