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48f0ed1b MH |
1 | /* |
2 | * | |
3 | * Bluetooth support for Intel devices | |
4 | * | |
5 | * Copyright (C) 2015 Intel Corporation | |
6 | * | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; either version 2 of the License, or | |
11 | * (at your option) any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the Free Software | |
20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
21 | * | |
22 | */ | |
23 | ||
24 | #include <linux/module.h> | |
25 | ||
26 | #include <net/bluetooth/bluetooth.h> | |
27 | #include <net/bluetooth/hci_core.h> | |
28 | ||
29 | #include "btintel.h" | |
30 | ||
31 | #define VERSION "0.1" | |
32 | ||
33 | #define BDADDR_INTEL (&(bdaddr_t) {{0x00, 0x8b, 0x9e, 0x19, 0x03, 0x00}}) | |
34 | ||
35 | int btintel_check_bdaddr(struct hci_dev *hdev) | |
36 | { | |
37 | struct hci_rp_read_bd_addr *bda; | |
38 | struct sk_buff *skb; | |
39 | ||
40 | skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, 0, NULL, | |
41 | HCI_INIT_TIMEOUT); | |
42 | if (IS_ERR(skb)) { | |
43 | int err = PTR_ERR(skb); | |
44 | BT_ERR("%s: Reading Intel device address failed (%d)", | |
45 | hdev->name, err); | |
46 | return err; | |
47 | } | |
48 | ||
49 | if (skb->len != sizeof(*bda)) { | |
50 | BT_ERR("%s: Intel device address length mismatch", hdev->name); | |
51 | kfree_skb(skb); | |
52 | return -EIO; | |
53 | } | |
54 | ||
55 | bda = (struct hci_rp_read_bd_addr *)skb->data; | |
48f0ed1b MH |
56 | |
57 | /* For some Intel based controllers, the default Bluetooth device | |
58 | * address 00:03:19:9E:8B:00 can be found. These controllers are | |
59 | * fully operational, but have the danger of duplicate addresses | |
60 | * and that in turn can cause problems with Bluetooth operation. | |
61 | */ | |
62 | if (!bacmp(&bda->bdaddr, BDADDR_INTEL)) { | |
63 | BT_ERR("%s: Found Intel default device address (%pMR)", | |
64 | hdev->name, &bda->bdaddr); | |
65 | set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks); | |
66 | } | |
67 | ||
68 | kfree_skb(skb); | |
69 | ||
70 | return 0; | |
71 | } | |
72 | EXPORT_SYMBOL_GPL(btintel_check_bdaddr); | |
73 | ||
74 | int btintel_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr) | |
75 | { | |
76 | struct sk_buff *skb; | |
77 | int err; | |
78 | ||
79 | skb = __hci_cmd_sync(hdev, 0xfc31, 6, bdaddr, HCI_INIT_TIMEOUT); | |
80 | if (IS_ERR(skb)) { | |
81 | err = PTR_ERR(skb); | |
82 | BT_ERR("%s: Changing Intel device address failed (%d)", | |
83 | hdev->name, err); | |
84 | return err; | |
85 | } | |
86 | kfree_skb(skb); | |
87 | ||
88 | return 0; | |
89 | } | |
90 | EXPORT_SYMBOL_GPL(btintel_set_bdaddr); | |
91 | ||
92 | MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); | |
93 | MODULE_DESCRIPTION("Bluetooth support for Intel devices ver " VERSION); | |
94 | MODULE_VERSION(VERSION); | |
95 | MODULE_LICENSE("GPL"); |