/****************************************************************************
 * drivers/wireless/bluetooth/bt_uart_generic.c
 * Generic UART based Bluetooth driver
 *
 *   Copyright (C) 2018 Gregory Nutt. All rights reserved.
 *   Author: Gregory Nutt <gnutt@nuttx.org>
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 * 3. Neither the name NuttX nor the names of its contributors may be
 *    used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 *
 ****************************************************************************/

/****************************************************************************
 * Included Files
 ****************************************************************************/

#include <nuttx/config.h>

#include <assert.h>
#include <errno.h>
#include <debug.h>

#include <nuttx/kmalloc.h>
#include <nuttx/wireless/bluetooth/bt_uart.h>

#if 0
#include <stddef.h>
#include <errno.h>

#include <nuttx/wireless/bluetooth/bt_core.h>
#include <nuttx/wireless/bluetooth/bt_hci.h>
#include <nuttx/wireless/bluetooth/bt_driver.h>
#endif

#include "bt_uart.h"

/****************************************************************************
 * Public Functions
 ****************************************************************************/

/****************************************************************************
 * Name: btuart_register
 *
 * Description:
 *   Create the UART-based Bluetooth device and register it with the
 *   Bluetooth stack.
 *
 * Input Parameters:
 *   lower - an instance of the lower half driver interface
 *
 * Returned Value:
 *   Zero is returned on success; a negated errno value is returned on any
 *   failure.
 *
 ****************************************************************************/

int btuart_register(FAR const struct btuart_lowerhalf_s *lower)
{
  FAR struct btuart_upperhalf_s *upper;
  int ret;

  wlinfo("lower %p\n", lower);

  DEBUGASSERT(lower != NULL);

  /* Allocate a new instance of the upper half driver state structure */

  upper = (FAR struct btuart_upperhalf_s *)
    kmm_zalloc(sizeof(struct btuart_upperhalf_s));

  if (upper == NULL)
    {
      wlerr("ERROR: Failed to allocate upper-half state\n");
      return -ENOMEM;
    }

  /* Initialize the upper half driver state */

  upper->dev.head_reserve = H4_HEADER_SIZE;
  upper->dev.open         = btuart_open;
  upper->dev.send         = btuart_send;
  upper->lower            = lower;

  /* And register the driver with the network and the Bluetooth stack. */

  ret = bt_netdev_register(&upper->dev);
  if (ret < 0)
    {
      wlerr("ERROR: bt_driver_register failed: %d\n", ret);
      kmm_free(upper);
    }

  return ret;
}