/****************************************************************************
 *
 *   Copyright (c) 2012-2016 PX4 Development Team. All rights reserved.
 *         Author: David Sidrane <david_s5@nscdg.com>
 *
 * 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 PX4 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.
 *
 ****************************************************************************/

/**
 * @file tap-v1_usb.c
 *
 * Board-specific USB functions.
 */

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

#include <px4_config.h>

#include <sys/types.h>
#include <stdint.h>
#include <stdbool.h>
#include <debug.h>

#include <nuttx/usb/usbdev.h>
#include <nuttx/usb/usbdev_trace.h>

#include "up_arch.h"
#include "stm32.h"
#include "board_config.h"
#include "stm32_otgfs.h"

#define GPIO_DP (GPIO_OUTPUT|GPIO_OPENDRAIN|GPIO_SPEED_50MHz|GPIO_OUTPUT_CLEAR|GPIO_PORTA|GPIO_PIN12)


/************************************************************************************
 * Definitions
 ************************************************************************************/

/************************************************************************************
 * Private Functions
 ************************************************************************************/

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

/************************************************************************************
 * Name: stm32_usbinitialize
 *
 * Description:
 *   Called to setup USB-related GPIO pins for the tap-v1 board.
 *
 ************************************************************************************/

__EXPORT void stm32_usbinitialize(void)
{
	/* The OTG FS has an internal soft pull-up.
	 * The HW also has one too. So we need to overcome it.
	 * to force a soft disconnect.
	 */

	/* Issue the Reset to the OTGFS Block */

	uint32_t regval = getreg32(STM32_RCC_AHB2RSTR);
	regval |= RCC_AHB2RSTR_OTGFSRST;
	putreg32(regval, STM32_RCC_AHB2RSTR);

	/* Drive the DP Pin Low */

	stm32_configgpio(GPIO_DP);

	/* Release the Reset to the OTGFS Block */

	regval &= ~RCC_AHB2RSTR_OTGFSRST;

	putreg32(regval, STM32_RCC_AHB2RSTR);


	/* Configure the OTG FS VBUS sensing GPIO */

	px4_arch_configgpio(GPIO_OTGFS_VBUS);
}

/************************************************************************************
 * Name:  stm32_usbsuspend
 *
 * Description:
 *   Board logic must provide the stm32_usbsuspend logic if the USBDEV driver is
 *   used.  This function is called whenever the USB enters or leaves suspend mode.
 *   This is an opportunity for the board logic to shutdown clocks, power, etc.
 *   while the USB is suspended.
 *
 ************************************************************************************/

__EXPORT void stm32_usbsuspend(FAR struct usbdev_s *dev, bool resume)
{
	//ulldbg("resume: %d\n", resume);
}

