From 5cb03751455c299b1bf10cb48631bf359cfb11b5 Mon Sep 17 00:00:00 2001 From: "mark-yw.chen" Date: Wed, 1 Sep 2021 11:32:25 +0800 Subject: [PATCH 1/5] Bluetooth: btusb: Support public address configuration for MediaTek Chip. The MediaTek chip support vendor specific HCI command(0xfc1a) to change the public address. Add hdev->set_bdaddr handler for MediaTek Chip. After doing a power cycle or MediaTek Bluetooth reset, BD_ADDR will bring back the original one. Signed-off-by: mark-yw.chen Signed-off-by: Marcel Holtmann --- drivers/bluetooth/btusb.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) --- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -2289,6 +2289,23 @@ struct btmtk_section_map { }; } __packed; +static int btusb_set_bdaddr_mtk(struct hci_dev *hdev, const bdaddr_t *bdaddr) +{ + struct sk_buff *skb; + long ret; + + skb = __hci_cmd_sync(hdev, 0xfc1a, sizeof(bdaddr), bdaddr, HCI_INIT_TIMEOUT); + if (IS_ERR(skb)) { + ret = PTR_ERR(skb); + bt_dev_err(hdev, "changing Mediatek device address failed (%ld)", + ret); + return ret; + } + kfree_skb(skb); + + return 0; +} + static void btusb_mtk_wmt_recv(struct urb *urb) { struct hci_dev *hdev = urb->context; @@ -3943,6 +3960,7 @@ static int btusb_probe(struct usb_interf hdev->shutdown = btusb_mtk_shutdown; hdev->manufacturer = 70; hdev->cmd_timeout = btusb_mtk_cmd_timeout; + hdev->set_bdaddr = btusb_set_bdaddr_mtk; set_bit(HCI_QUIRK_NON_PERSISTENT_SETUP, &hdev->quirks); data->recv_acl = btusb_recv_acl_mtk; }