linux-imx

/*

 *  Texas Instrument's Bluetooth Driver For Shared Transport.

 *

 *  Bluetooth Driver acts as interface between HCI core and

 *  TI Shared Transport Layer.

 *

 *  Copyright (C) 2009-2010 Texas Instruments

 *  Author: Raja Mani <raja_mani@ti.com>

 *  Pavan Savoy <pavan_savoy@ti.com>

 *

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

 *  it under the terms of the GNU General Public License version 2 as

 *  published by the Free Software Foundation.

 *

 *  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/platform_device.h>

#include <net/bluetooth/bluetooth.h>

#include <net/bluetooth/hci_core.h>

#include <net/bluetooth/hci.h>

​

#include <linux/ti_wilink_st.h>

#include <linux/module.h>

​

/* Bluetooth Driver Version */

#define VERSION               "1.0"

#define MAX_BT_CHNL_IDS     3

​

/* Number of seconds to wait for registration completion

 * when ST returns PENDING status.

 */

#define BT_REGISTER_TIMEOUT   6000  /* 6 sec */

​

/**

 * struct ti_st - driver operation structure

 * @hdev: hci device pointer which binds to bt driver

 * @reg_status: ST registration callback status

 * @st_write: write function provided by the ST driver

 *  to be used by the driver during send_frame.

 * @wait_reg_completion - completion sync between ti_st_open

 *  and st_reg_completion_cb.

 */

struct ti_st {

    struct hci_dev *hdev;

    int reg_status;

    long (*st_write) (struct sk_buff *);

    struct completion wait_reg_completion;

};

​

/* Increments HCI counters based on pocket ID (cmd,acl,sco) */

static inline void ti_st_tx_complete(struct ti_st *hst, int pkt_type)

{

    struct hci_dev *hdev = hst->hdev;

​

    /* Update HCI stat counters */

    switch (pkt_type) {

    case HCI_COMMAND_PKT:

        hdev->stat.cmd_tx++;

        break;

​

    case HCI_ACLDATA_PKT:

        hdev->stat.acl_tx++;

        break;

​

    case HCI_SCODATA_PKT:

        hdev->stat.sco_tx++;

        break;

    }

}

​

/* ------- Interfaces to Shared Transport ------ */

​

/* Called by ST layer to indicate protocol registration completion

 * status.ti_st_open() function will wait for signal from this

 * API when st_register() function returns ST_PENDING.

 */

static void st_reg_completion_cb(void *priv_data, int data)

{

    struct ti_st *lhst = priv_data;

​

    /* Save registration status for use in ti_st_open() */

    lhst->reg_status = data;

    /* complete the wait in ti_st_open() */