[PATCH v1] Bluetooth: btusb: add shutdown function for wcn6855
From: Zijun Hu <hidden>
Date: 2020-12-18 10:13:32
Also in:
linux-arm-msm, lkml
Subsystem:
bluetooth drivers, the rest · Maintainers:
Marcel Holtmann, Luiz Augusto von Dentz, Linus Torvalds
From: Tim Jiang <redacted> we should send hci reset command before bt turn off, which can reset bt firmware status. Signed-off-by: Tim Jiang <redacted> --- drivers/bluetooth/btusb.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+)
diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index 03b83aa91277..139132463a87 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c@@ -4264,6 +4264,20 @@ static bool btusb_prevent_wake(struct hci_dev *hdev) return !device_may_wakeup(&data->udev->dev); } +static int btusb_shutdown_qca(struct hci_dev *hdev) +{ + struct sk_buff *skb; + + skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT); + if (IS_ERR(skb)) { + bt_dev_err(hdev, "HCI reset during shutdown failed"); + return PTR_ERR(skb); + } + kfree_skb(skb); + + return 0; +} + static int btusb_probe(struct usb_interface *intf, const struct usb_device_id *id) {
@@ -4523,6 +4537,7 @@ static int btusb_probe(struct usb_interface *intf, if (id->driver_info & BTUSB_QCA_WCN6855) { data->setup_on_usb = btusb_setup_qca; + hdev->shutdown = btusb_shutdown_qca; hdev->set_bdaddr = btusb_set_bdaddr_wcn6855; hdev->cmd_timeout = btusb_qca_cmd_timeout; set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
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