[PATCH v5 4/8] Bluetooth: btusb: add callback function in btusb suspend/resume

Chris Lu
2024-06-26T02:53:51Z

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>
---
drivers/bluetooth/btusb.c | 9 +++++++++
1 file changed, 9 insertions(+)

diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index 7612f10f9d39..4ec18b58dc68 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -891,6 +891,9 @@ 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;

@@ -4765,6 +4768,9 @@ 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);

@@ -4868,6 +4874,9 @@ 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);
--
2.18.0