projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 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; | |
| 56 | if (bda->status) { | |
| 57 | BT_ERR("%s: Intel device address result failed (%02x)", | |
| 58 | hdev->name, bda->status); | |
| 59 | kfree_skb(skb); | |
| 60 | return -bt_to_errno(bda->status); | |
| 61 | } | |
| 62 | ||
| 63 | /* For some Intel based controllers, the default Bluetooth device | |
| 64 | * address 00:03:19:9E:8B:00 can be found. These controllers are | |
| 65 | * fully operational, but have the danger of duplicate addresses | |
| 66 | * and that in turn can cause problems with Bluetooth operation. | |
| 67 | */ | |
| 68 | if (!bacmp(&bda->bdaddr, BDADDR_INTEL)) { | |
| 69 | BT_ERR("%s: Found Intel default device address (%pMR)", | |
| 70 | hdev->name, &bda->bdaddr); | |
| 71 | set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks); | |
| 72 | } | |
| 73 | ||
| 74 | kfree_skb(skb); | |
| 75 | ||
| 76 | return 0; | |
| 77 | } | |
| 78 | EXPORT_SYMBOL_GPL(btintel_check_bdaddr); | |
| 79 | ||
| 80 | int btintel_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr) | |
| 81 | { | |
| 82 | struct sk_buff *skb; | |
| 83 | int err; | |
| 84 | ||
| 85 | skb = __hci_cmd_sync(hdev, 0xfc31, 6, bdaddr, HCI_INIT_TIMEOUT); | |
| 86 | if (IS_ERR(skb)) { | |
| 87 | err = PTR_ERR(skb); | |
| 88 | BT_ERR("%s: Changing Intel device address failed (%d)", | |
| 89 | hdev->name, err); | |
| 90 | return err; | |
| 91 | } | |
| 92 | kfree_skb(skb); | |
| 93 | ||
| 94 | return 0; | |
| 95 | } | |
| 96 | EXPORT_SYMBOL_GPL(btintel_set_bdaddr); | |
| 97 | ||
| 98 | MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); | |
| 99 | MODULE_DESCRIPTION("Bluetooth support for Intel devices ver " VERSION); | |
| 100 | MODULE_VERSION(VERSION); | |
| 101 | MODULE_LICENSE("GPL"); |