linux-imx

/*

 *

 *  Bluetooth HCI UART driver

 *

 *  Copyright (C) 2000-2001  Qualcomm Incorporated

 *  Copyright (C) 2002-2003  Maxim Krasnyansky <maxk@qualcomm.com>

 *  Copyright (C) 2004-2005  Marcel Holtmann <marcel@holtmann.org>

 *

 *

 *  This program is free software; you can redistribute it and/or modify

 *  it under the terms of the GNU General Public License as published by

 *  the Free Software Foundation; either version 2 of the License, or

 *  (at your option) any later version.

 *

 *  This program is distributed in the hope that it will be useful,

 *  but WITHOUT ANY WARRANTY; without even the implied warranty of

 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 *  GNU General Public License for more details.

 *

 *  You should have received a copy of the GNU General Public License

 *  along with this program; if not, write to the Free Software

 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

 *

 */

​

#include <linux/module.h>

​

#include <linux/kernel.h>

#include <linux/init.h>

#include <linux/types.h>

#include <linux/fcntl.h>

#include <linux/interrupt.h>

#include <linux/ptrace.h>

#include <linux/poll.h>

​

#include <linux/slab.h>

#include <linux/tty.h>

#include <linux/errno.h>

#include <linux/string.h>

#include <linux/signal.h>

#include <linux/ioctl.h>

#include <linux/skbuff.h>

#include <asm/unaligned.h>

​

#include <net/bluetooth/bluetooth.h>

#include <net/bluetooth/hci_core.h>

​

#include "hci_uart.h"

​

struct h4_struct {

    struct sk_buff *rx_skb;

    struct sk_buff_head txq;

};

​

/* Initialize protocol */

static int h4_open(struct hci_uart *hu)

{

    struct h4_struct *h4;

​

    BT_DBG("hu %p", hu);

​

    h4 = kzalloc(sizeof(*h4), GFP_KERNEL);

    if (!h4)

        return -ENOMEM;

​

    skb_queue_head_init(&h4->txq);

​

    hu->priv = h4;

    return 0;

}

​

/* Flush protocol data */

static int h4_flush(struct hci_uart *hu)

{

    struct h4_struct *h4 = hu->priv;

​

    BT_DBG("hu %p", hu);

​

    skb_queue_purge(&h4->txq);

​

    return 0;

}

​

/* Close protocol */

static int h4_close(struct hci_uart *hu)

{

    struct h4_struct *h4 = hu->priv;

​

    hu->priv = NULL;

​

    BT_DBG("hu %p", hu);

​