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4fba30f0 MH |
1 | /* |
2 | * | |
3 | * Bluetooth support for Broadcom 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 "btbcm.h" | |
30 | ||
31 | #define VERSION "0.1" | |
32 | ||
33 | #define BDADDR_BCM20702A0 (&(bdaddr_t) {{0x00, 0xa0, 0x02, 0x70, 0x20, 0x00}}) | |
34 | ||
35 | int btbcm_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: BCM: Reading device address failed (%d)", | |
45 | hdev->name, err); | |
46 | return err; | |
47 | } | |
48 | ||
49 | if (skb->len != sizeof(*bda)) { | |
50 | BT_ERR("%s: BCM: 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; | |
56 | if (bda->status) { | |
57 | BT_ERR("%s: BCM: Device address result failed (%02x)", | |
58 | hdev->name, bda->status); | |
59 | kfree_skb(skb); | |
60 | return -bt_to_errno(bda->status); | |
61 | } | |
62 | ||
63 | /* The address 00:20:70:02:A0:00 indicates a BCM20702A0 controller | |
64 | * with no configured address. | |
65 | */ | |
66 | if (!bacmp(&bda->bdaddr, BDADDR_BCM20702A0)) { | |
67 | BT_INFO("%s: BCM: Using default device address (%pMR)", | |
68 | hdev->name, &bda->bdaddr); | |
69 | set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks); | |
70 | } | |
71 | ||
72 | kfree_skb(skb); | |
73 | ||
74 | return 0; | |
75 | } | |
76 | EXPORT_SYMBOL_GPL(btbcm_check_bdaddr); | |
77 | ||
78 | int btbcm_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr) | |
79 | { | |
80 | struct sk_buff *skb; | |
81 | int err; | |
82 | ||
83 | skb = __hci_cmd_sync(hdev, 0xfc01, 6, bdaddr, HCI_INIT_TIMEOUT); | |
84 | if (IS_ERR(skb)) { | |
85 | err = PTR_ERR(skb); | |
86 | BT_ERR("%s: BCM: Change address command failed (%d)", | |
87 | hdev->name, err); | |
88 | return err; | |
89 | } | |
90 | kfree_skb(skb); | |
91 | ||
92 | return 0; | |
93 | } | |
94 | EXPORT_SYMBOL_GPL(btbcm_set_bdaddr); | |
95 | ||
96 | MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); | |
97 | MODULE_DESCRIPTION("Bluetooth support for Broadcom devices ver " VERSION); | |
98 | MODULE_VERSION(VERSION); | |
99 | MODULE_LICENSE("GPL"); |