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/*
*
* Bluetooth support for Intel devices
*
* Copyright (C) 2015 Intel Corporation
*
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include <linux/module.h>
#include <net/bluetooth/bluetooth.h>
#include <net/bluetooth/hci_core.h>
#include "btintel.h"
#define VERSION "0.1"
#define BDADDR_INTEL (&(bdaddr_t) {{0x00, 0x8b, 0x9e, 0x19, 0x03, 0x00}})
int btintel_check_bdaddr(struct hci_dev *hdev)
{
struct hci_rp_read_bd_addr *bda;
struct sk_buff *skb;
skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, 0, NULL,
HCI_INIT_TIMEOUT);
if (IS_ERR(skb)) {
int err = PTR_ERR(skb);
BT_ERR("%s: Reading Intel device address failed (%d)",
hdev->name, err);
return err;
}
if (skb->len != sizeof(*bda)) {
BT_ERR("%s: Intel device address length mismatch", hdev->name);
kfree_skb(skb);
return -EIO;
}
bda = (struct hci_rp_read_bd_addr *)skb->data;
if (bda->status) {
BT_ERR("%s: Intel device address result failed (%02x)",
hdev->name, bda->status);
kfree_skb(skb);
return -bt_to_errno(bda->status);
}
/* For some Intel based controllers, the default Bluetooth device
* address 00:03:19:9E:8B:00 can be found. These controllers are
* fully operational, but have the danger of duplicate addresses
* and that in turn can cause problems with Bluetooth operation.
*/
if (!bacmp(&bda->bdaddr, BDADDR_INTEL)) {
BT_ERR("%s: Found Intel default device address (%pMR)",
hdev->name, &bda->bdaddr);
set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
}
kfree_skb(skb);
return 0;
}
EXPORT_SYMBOL_GPL(btintel_check_bdaddr);
int btintel_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr)
{
struct sk_buff *skb;
int err;
skb = __hci_cmd_sync(hdev, 0xfc31, 6, bdaddr, HCI_INIT_TIMEOUT);
if (IS_ERR(skb)) {
err = PTR_ERR(skb);
BT_ERR("%s: Changing Intel device address failed (%d)",
hdev->name, err);
return err;
}
kfree_skb(skb);
return 0;
}
EXPORT_SYMBOL_GPL(btintel_set_bdaddr);
MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
MODULE_DESCRIPTION("Bluetooth support for Intel devices ver " VERSION);
MODULE_VERSION(VERSION);
MODULE_LICENSE("GPL");
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