tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 *
3 * Bluetooth HCI UART driver
4 *
5 * Copyright (C) 2000-2001 Qualcomm Incorporated
6 * Copyright (C) 2002-2003 Maxim Krasnyansky <maxk@qualcomm.com>
7 * Copyright (C) 2004-2005 Marcel Holtmann <marcel@holtmann.org>
8 *
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 *
24 */
25
26#ifndef N_HCI
27#define N_HCI 15
28#endif
29
30/* Ioctls */
31#define HCIUARTSETPROTO _IOW('U', 200, int)
32#define HCIUARTGETPROTO _IOR('U', 201, int)
33
34/* UART protocols */
35#define HCI_UART_MAX_PROTO 4
36
37#define HCI_UART_H4 0
38#define HCI_UART_BCSP 1
39#define HCI_UART_3WIRE 2
40#define HCI_UART_H4DS 3
41
42struct hci_uart;
43
44struct hci_uart_proto {
45 unsigned int id;
46 int (*open)(struct hci_uart *hu);
47 int (*close)(struct hci_uart *hu);
48 int (*flush)(struct hci_uart *hu);
49 int (*recv)(struct hci_uart *hu, void *data, int len);
50 int (*enqueue)(struct hci_uart *hu, struct sk_buff *skb);
51 struct sk_buff *(*dequeue)(struct hci_uart *hu);
52};
53
54struct hci_uart {
55 struct tty_struct *tty;
56 struct hci_dev *hdev;
57 unsigned long flags;
58
59 struct hci_uart_proto *proto;
60 void *priv;
61
62 struct sk_buff *tx_skb;
63 unsigned long tx_state;
64 spinlock_t rx_lock;
65};
66
67/* HCI_UART flag bits */
68#define HCI_UART_PROTO_SET 0
69
70/* TX states */
71#define HCI_UART_SENDING 1
72#define HCI_UART_TX_WAKEUP 2
73
74int hci_uart_register_proto(struct hci_uart_proto *p);
75int hci_uart_unregister_proto(struct hci_uart_proto *p);
76int hci_uart_tx_wakeup(struct hci_uart *hu);
77
78#ifdef CONFIG_BT_HCIUART_H4
79int h4_init(void);
80int h4_deinit(void);
81#endif
82
83#ifdef CONFIG_BT_HCIUART_BCSP
84int bcsp_init(void);
85int bcsp_deinit(void);
86#endif