/* 
 * The MIT License (MIT)
 *
 * Copyright (c) 2019 Ha Thach (tinyusb.org)
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 *
 * This file is part of the TinyUSB stack.
 */

#include "tusb_option.h"

#if (TUSB_OPT_DEVICE_ENABLED && CFG_TUD_VENDOR)

#include "vendor_device.h"
#include "device/usbd_pvt.h"

//--------------------------------------------------------------------+
// MACRO CONSTANT TYPEDEF
//--------------------------------------------------------------------+
typedef struct {
  uint8_t itf_num;

  uint8_t ep_in;
  uint8_t ep_out;

  /*------------- From this point, data is not cleared by bus reset -------------*/
  tu_fifo_t rx_ff;
  tu_fifo_t tx_ff;

  // Endpoint Transfer buffer
  CFG_TUSB_MEM_ALIGN uint8_t epout_buf[CFG_TUD_VENDOR_EPSIZE];
  CFG_TUSB_MEM_ALIGN uint8_t epin_buf[CFG_TUD_VENDOR_EPSIZE];

} vendord_interface_t;

static vendord_interface_t _vendord_itf[CFG_TUD_VENDOR];

#define ITF_MEM_RESET_SIZE   offsetof(vendord_interface_t, rx_ff)

//--------------------------------------------------------------------+
// USBD Driver API
//--------------------------------------------------------------------+
void vendord_init(void)
{
  tu_varclr(_vendord_itf);
}

void vendord_reset(uint8_t rhport)
{
  (void) rhport;

  for(uint8_t i=0; i<CFG_TUD_VENDOR; i++)
  {
    tu_memclr(&_vendord_itf[i], ITF_MEM_RESET_SIZE);
  }
}

bool vendord_open(uint8_t rhport, tusb_desc_interface_t const * itf_desc, uint16_t *p_len)
{
  // Find available interface
  vendord_interface_t* p_vendor = NULL;
  for(uint8_t i=0; i<CFG_TUD_VENDOR; i++)
  {
    if ( _vendord_itf[i].ep_in == 0 && _vendord_itf[i].ep_out == 0 )
    {
      p_vendor = &_vendord_itf[i];
      break;
    }
  }
  TU_VERIFY(p_vendor);

  // Open endpoint pair with usbd helper
  TU_ASSERT(usbd_open_edpt_pair(rhport, tu_desc_next(itf_desc), 2, TUSB_XFER_BULK, &p_vendor->ep_out, &p_vendor->ep_in));

  p_vendor->itf_num = itf_desc->bInterfaceNumber;
  (*p_len) = sizeof(tusb_desc_interface_t) + 2*sizeof(tusb_desc_endpoint_t);

  // Prepare for incoming data
  TU_ASSERT(usbd_edpt_xfer(rhport, p_vendor->ep_out, p_vendor->epout_buf, sizeof(p_vendor->epout_buf)));

  return true;
}

bool vendord_xfer_cb(uint8_t rhport, uint8_t ep_addr, xfer_result_t event, uint32_t xferred_bytes)
{
  return true;
}


#endif