linux/drivers/usb/serial/wishbone-serial.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * USB Wishbone-Serial adapter driver
 *
 * Copyright (C) 2013 Wesley W. Terpstra <[email protected]>
 * Copyright (C) 2013 GSI Helmholtz Centre for Heavy Ion Research GmbH
 */

#include <linux/kernel.h>
#include <linux/tty.h>
#include <linux/module.h>
#include <linux/usb.h>
#include <linux/usb/serial.h>
#include <linux/uaccess.h>

#define GSI_VENDOR_OPENCLOSE …

static const struct usb_device_id id_table[] = …;
MODULE_DEVICE_TABLE(usb, id_table);

/*
 * Etherbone must be told that a new stream has begun before data arrives.
 * This is necessary to restart the negotiation of Wishbone bus parameters.
 * Similarly, when the stream ends, Etherbone must be told so that the cycle
 * line can be driven low in the case that userspace failed to do so.
 */
static int usb_gsi_openclose(struct usb_serial_port *port, int value)
{ … }

static int wishbone_serial_open(struct tty_struct *tty,
				struct usb_serial_port *port)
{ … }

static void wishbone_serial_close(struct usb_serial_port *port)
{ … }

static struct usb_serial_driver wishbone_serial_device = …;

static struct usb_serial_driver * const serial_drivers[] = …;

module_usb_serial_driver(…);

MODULE_AUTHOR(…) …;
MODULE_DESCRIPTION(…) …;
MODULE_LICENSE(…) …;