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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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100 lines
2.6 KiB
C
100 lines
2.6 KiB
C
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/*
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*
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* Bluetooth support for Broadcom devices
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*
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* Copyright (C) 2015 Intel Corporation
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*
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#include <linux/module.h>
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#include <net/bluetooth/bluetooth.h>
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#include <net/bluetooth/hci_core.h>
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#include "btbcm.h"
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#define VERSION "0.1"
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#define BDADDR_BCM20702A0 (&(bdaddr_t) {{0x00, 0xa0, 0x02, 0x70, 0x20, 0x00}})
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int btbcm_check_bdaddr(struct hci_dev *hdev)
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{
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struct hci_rp_read_bd_addr *bda;
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struct sk_buff *skb;
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skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, 0, NULL,
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HCI_INIT_TIMEOUT);
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if (IS_ERR(skb)) {
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int err = PTR_ERR(skb);
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BT_ERR("%s: BCM: Reading device address failed (%d)",
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hdev->name, err);
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return err;
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}
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if (skb->len != sizeof(*bda)) {
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BT_ERR("%s: BCM: Device address length mismatch", hdev->name);
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kfree_skb(skb);
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return -EIO;
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}
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bda = (struct hci_rp_read_bd_addr *)skb->data;
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if (bda->status) {
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BT_ERR("%s: BCM: Device address result failed (%02x)",
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hdev->name, bda->status);
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kfree_skb(skb);
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return -bt_to_errno(bda->status);
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}
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/* The address 00:20:70:02:A0:00 indicates a BCM20702A0 controller
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* with no configured address.
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*/
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if (!bacmp(&bda->bdaddr, BDADDR_BCM20702A0)) {
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BT_INFO("%s: BCM: Using default device address (%pMR)",
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hdev->name, &bda->bdaddr);
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set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
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}
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kfree_skb(skb);
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return 0;
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}
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EXPORT_SYMBOL_GPL(btbcm_check_bdaddr);
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int btbcm_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr)
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{
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struct sk_buff *skb;
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int err;
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skb = __hci_cmd_sync(hdev, 0xfc01, 6, bdaddr, HCI_INIT_TIMEOUT);
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if (IS_ERR(skb)) {
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err = PTR_ERR(skb);
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BT_ERR("%s: BCM: Change address command failed (%d)",
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hdev->name, err);
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return err;
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}
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kfree_skb(skb);
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return 0;
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}
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EXPORT_SYMBOL_GPL(btbcm_set_bdaddr);
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MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
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MODULE_DESCRIPTION("Bluetooth support for Broadcom devices ver " VERSION);
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MODULE_VERSION(VERSION);
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MODULE_LICENSE("GPL");
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