linux-imx

/*

 *

 *  Generic Bluetooth SDIO driver

 *

 *  Copyright (C) 2007  Cambridge Silicon Radio Ltd.

 *  Copyright (C) 2007  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/kernel.h>

#include <linux/module.h>

#include <linux/init.h>

#include <linux/slab.h>

#include <linux/types.h>

#include <linux/sched.h>

#include <linux/errno.h>

#include <linux/skbuff.h>

​

#include <linux/mmc/host.h>

#include <linux/mmc/sdio_ids.h>

#include <linux/mmc/sdio_func.h>

​

#include <net/bluetooth/bluetooth.h>

#include <net/bluetooth/hci_core.h>

​

#define VERSION "0.1"

​

static const struct sdio_device_id btsdio_table[] = {

    /* Generic Bluetooth Type-A SDIO device */

    { SDIO_DEVICE_CLASS(SDIO_CLASS_BT_A) },

​

    /* Generic Bluetooth Type-B SDIO device */

    { SDIO_DEVICE_CLASS(SDIO_CLASS_BT_B) },

​

    /* Generic Bluetooth AMP controller */

    { SDIO_DEVICE_CLASS(SDIO_CLASS_BT_AMP) },

​

    { } /* Terminating entry */

};

​

MODULE_DEVICE_TABLE(sdio, btsdio_table);

​

struct btsdio_data {

    struct hci_dev   *hdev;

    struct sdio_func *func;

​

    struct work_struct work;

​

    struct sk_buff_head txq;

};

​

#define REG_RDAT     0x00   /* Receiver Data */

#define REG_TDAT     0x00   /* Transmitter Data */

#define REG_PC_RRT   0x10   /* Read Packet Control */

#define REG_PC_WRT   0x11   /* Write Packet Control */

#define REG_RTC_STAT 0x12   /* Retry Control Status */

#define REG_RTC_SET  0x12   /* Retry Control Set */

#define REG_INTRD    0x13   /* Interrupt Indication */

#define REG_CL_INTRD 0x13   /* Interrupt Clear */

#define REG_EN_INTRD 0x14   /* Interrupt Enable */

#define REG_MD_STAT  0x20   /* Bluetooth Mode Status */

#define REG_MD_SET   0x20   /* Bluetooth Mode Set */

​

static int btsdio_tx_packet(struct btsdio_data *data, struct sk_buff *skb)

{

    int err;

​

    BT_DBG("%s", data->hdev->name);

​

    /* Prepend Type-A header */

    skb_push(skb, 4);

    skb->data[0] = (skb->len & 0x0000ff);

    skb->data[1] = (skb->len & 0x00ff00) >> 8;

    skb->data[2] = (skb->len & 0xff0000) >> 16;

    skb->data[3] = hci_skb_pkt_type(skb);

​

    err = sdio_writesb(data->func, REG_TDAT, skb->data, skb->len);