drivers/bluetooth/hci_uart.h

   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
  42 struct hci_uart;
  43
  44 struct 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
  54 struct 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
  74 int hci_uart_register_proto(struct hci_uart_proto *p);
  75 int hci_uart_unregister_proto(struct hci_uart_proto *p);
  76 int hci_uart_tx_wakeup(struct hci_uart *hu);
  77
  78 #ifdef CONFIG_BT_HCIUART_H4
  79 int h4_init(void);
  80 int h4_deinit(void);
  81 #endif
  82
  83 #ifdef CONFIG_BT_HCIUART_BCSP
  84 int bcsp_init(void);
  85 int bcsp_deinit(void);
  86 #endif