/* SPDX-License-Identifier: BSD-3-Clause */

/***************************************************************************
 *
 * Copyright(c) 2015,2016 Intel Corporation.
 * Copyright(c) 2017 PHYTEC Messtechnik GmbH
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 * * 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.
 * * Neither the name of Intel Corporation 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,
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 ***************************************************************************/

/**
 * @file
 * @brief USB Device Firmware Upgrade (DFU) public header
 *
 * Header follows the Device Class Specification for
 * Device Firmware Upgrade Version 1.1
 */

#ifndef ZEPHYR_INCLUDE_USB_CLASS_USB_DFU_H_
#define ZEPHYR_INCLUDE_USB_CLASS_USB_DFU_H_

#include <sys_clock.h>

/** DFU Class Subclass */
#define DFU_SUBCLASS			0x01

/** DFU Class runtime Protocol */
#define DFU_RT_PROTOCOL			0x01

/** DFU Class DFU mode Protocol */
#define DFU_MODE_PROTOCOL		0x02

/**
 * @brief DFU Class Specific Requests
 */
#define DFU_DETACH			0x00
#define DFU_DNLOAD			0x01
#define DFU_UPLOAD			0x02
#define DFU_GETSTATUS			0x03
#define DFU_CLRSTATUS			0x04
#define DFU_GETSTATE			0x05
#define DFU_ABORT			0x06

/** DFU FUNCTIONAL descriptor type */
#define DFU_FUNC_DESC			0x21

/** DFU attributes DFU Functional Descriptor */
#define DFU_ATTR_WILL_DETACH		0x08
#define DFU_ATTR_MANIFESTATION_TOLERANT	0x04
#define DFU_ATTR_CAN_UPLOAD		0x02
#define DFU_ATTR_CAN_DNLOAD		0x01

/** DFU Specification release */
#define DFU_VERSION			0x0110

/** Run-Time Functional Descriptor */
struct dfu_runtime_descriptor {
	uint8_t bLength;
	uint8_t bDescriptorType;
	uint8_t bmAttributes;
	uint16_t wDetachTimeOut;
	uint16_t wTransferSize;
	uint16_t bcdDFUVersion;
} __packed;

/** bStatus values for the DFU_GETSTATUS response */
enum dfu_status {
	statusOK,
	errTARGET,
	errFILE,
	errWRITE,
	errERASE,
	errCHECK_ERASED,
	errPROG,
	errVERIFY,
	errADDRESS,
	errNOTDONE,
	errFIRMWARE,
	errVENDOR,
	errUSB,
	errPOR,
	errUNKNOWN,
	errSTALLEDPKT
};

/** bState values for the DFU_GETSTATUS response */
enum dfu_state {
	appIDLE,
	appDETACH,
	dfuIDLE,
	dfuDNLOAD_SYNC,
	dfuDNBUSY,
	dfuDNLOAD_IDLE,
	dfuMANIFEST_SYNC,
	dfuMANIFEST,
	dfuMANIFEST_WAIT_RST,
	dfuUPLOAD_IDLE,
	dfuERROR,
};

void wait_for_usb_dfu(k_timeout_t delay);

#endif /* ZEPHYR_INCLUDE_USB_CLASS_USB_DFU_H_ */