#ifndef _USB_DFU_H
#define _USB_DFU_H
/* USB Device Firmware Update Implementation for OpenPCD
 * (C) 2006 by Harald Welte <hwelte@hmw-consulting.de>
 *
 * Protocol definitions for USB DFU
 *
 * This ought to be compliant to the USB DFU Spec 1.0 as available from
 * http://www.usb.org/developers/devclass_docs/usbdfu10.pdf
 *
 */

#include <stdint.h>
#define USB_DFU_CLASS 0xfe

#define USB_DT_DFU 0x21

struct usb_dfu_func_descriptor {
	uint8_t bLength;
	uint8_t bDescriptorType;
	uint8_t bmAttributes;
#define USB_DFU_CAN_DOWNLOAD (1 << 0)
#define USB_DFU_CAN_UPLOAD (1 << 1)
#define USB_DFU_MANIFEST_TOL (1 << 2)
#define USB_DFU_WILL_DETACH (1 << 3)
	uint16_t wDetachTimeOut;
	uint16_t wTransferSize;
	uint16_t bcdDFUVersion;
} __attribute__((packed));

#define USB_DT_DFU_SIZE 9

/* DFU class-specific requests (Section 3, DFU Rev 1.1) */
enum usb_dfu_req {
	USB_DFU_DETACH,
	USB_DFU_DNLOAD,
	USB_DFU_UPLOAD,
	USB_DFU_GETSTATUS,
	USB_DFU_CLRSTATUS,
	USB_DFU_GETSTATE,
	USB_DFU_ABORT,
};

struct dfu_status {
	uint8_t bStatus;
	uint8_t bwPollTimeout[3];
	uint8_t bState;
	uint8_t iString;
} __attribute__((packed));

enum usb_dfu_status {
	DFU_STATUS_OK		   = 0x00,
	DFU_STATUS_errTARGET	   = 0x01,
	DFU_STATUS_errFILE	   = 0x02,
	DFU_STATUS_errWRITE	   = 0x03,
	DFU_STATUS_errERASE	   = 0x04,
	DFU_STATUS_errCHECK_ERASED = 0x05,
	DFU_STATUS_errPROG	   = 0x06,
	DFU_STATUS_errVERIFY	   = 0x07,
	DFU_STATUS_errADDRESS	   = 0x08,
	DFU_STATUS_errNOTDONE	   = 0x09,
	DFU_STATUS_errFIRMWARE	   = 0x0a,
	DFU_STATUS_errVENDOR	   = 0x0b,
	DFU_STATUS_errUSBR	   = 0x0c,
	DFU_STATUS_errPOR	   = 0x0d,
	DFU_STATUS_errUNKNOWN	   = 0x0e,
	DFU_STATUS_errSTALLEDPKT   = 0x0f,
};

enum dfu_state {
	DFU_STATE_appIDLE	       = 0,
	DFU_STATE_appDETACH	       = 1,
	DFU_STATE_dfuIDLE	       = 2,
	DFU_STATE_dfuDNLOAD_SYNC       = 3,
	DFU_STATE_dfuDNBUSY	       = 4,
	DFU_STATE_dfuDNLOAD_IDLE       = 5,
	DFU_STATE_dfuMANIFEST_SYNC     = 6,
	DFU_STATE_dfuMANIFEST	       = 7,
	DFU_STATE_dfuMANIFEST_WAIT_RST = 8,
	DFU_STATE_dfuUPLOAD_IDLE       = 9,
	DFU_STATE_dfuERROR	       = 10,
};

#endif /* _USB_DFU_H */