u-boot/include/usb_cdc_acm.h

/*
 * (C) Copyright 2006
 * Bryan O'Donoghue, deckard@codehermit.ie, CodeHermit
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

/* ACM Control Requests */
#define ACM_SEND_ENCAPSULATED_COMMAND	0x00
#define ACM_GET_ENCAPSULATED_RESPONSE	0x01
#define ACM_SET_COMM_FEATURE		0x02
#define ACM_GET_COMM_FEATRUE		0x03
#define ACM_CLEAR_COMM_FEATURE		0x04
#define ACM_SET_LINE_ENCODING		0x20
#define ACM_GET_LINE_ENCODING		0x21
#define ACM_SET_CONTROL_LINE_STATE	0x22
#define ACM_SEND_BREAK			0x23

/* ACM Notification Codes */
#define ACM_NETWORK_CONNECTION		0x00
#define ACM_RESPONSE_AVAILABLE		0x01
#define ACM_SERIAL_STATE		0x20

/* Format of response expected by a ACM_GET_LINE_ENCODING request */
struct rs232_emu{
		unsigned long dter;
		unsigned char stop_bits;
		unsigned char parity;
		unsigned char data_bits;
}__attribute__((packed));