From bee5395ced44c5a312348557eb2dfb0c2a7bfaa2 Mon Sep 17 00:00:00 2001 From: Ying Hsu Date: Mon, 4 Jul 2022 18:33:24 +0800 Subject: Bluetooth: Add default wakeup callback for HCI UART driver Bluetooth HCI devices indicate if they are able to wakeup in the wakeup callback since 'commit 4539ca67fe8e ("Bluetooth: Rename driver .prevent_wake to .wakeup")'. This patch adds a default wakeup callback for Bluetooth HCI UAR devices. It assumes Bluetooth HCI UART devices are wakeable for backward compatibility. For those who need a customized behavior, one can override it before calling hci_uart_register_device(). Fixes: 4539ca67fe8e ("Bluetooth: Rename driver .prevent_wake to .wakeup") Signed-off-by: Ying Hsu Reviewed-by: Alain Michaud Signed-off-by: Luiz Augusto von Dentz --- drivers/bluetooth/hci_serdev.c | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'drivers/bluetooth') diff --git a/drivers/bluetooth/hci_serdev.c b/drivers/bluetooth/hci_serdev.c index 4cda890ce647..c0e5f42ec6b7 100644 --- a/drivers/bluetooth/hci_serdev.c +++ b/drivers/bluetooth/hci_serdev.c @@ -231,6 +231,15 @@ static int hci_uart_setup(struct hci_dev *hdev) return 0; } +/* Check if the device is wakeable */ +static bool hci_uart_wakeup(struct hci_dev *hdev) +{ + /* HCI UART devices are assumed to be wakeable by default. + * Implement wakeup callback to override this behavior. + */ + return true; +} + /** hci_uart_write_wakeup - transmit buffer wakeup * @serdev: serial device * @@ -342,6 +351,8 @@ int hci_uart_register_device(struct hci_uart *hu, hdev->flush = hci_uart_flush; hdev->send = hci_uart_send_frame; hdev->setup = hci_uart_setup; + if (!hdev->wakeup) + hdev->wakeup = hci_uart_wakeup; SET_HCIDEV_DEV(hdev, &hu->serdev->dev); if (test_bit(HCI_UART_NO_SUSPEND_NOTIFIER, &hu->flags)) -- cgit v1.2.3