linux/drivers/usb/serial/opticon.c

// SPDX-License-Identifier: GPL-2.0
/*
 * Opticon USB barcode to serial driver
 *
 * Copyright (C) 2011 - 2012 Johan Hovold <[email protected]>
 * Copyright (C) 2011 Martin Jansen <[email protected]>
 * Copyright (C) 2008 - 2009 Greg Kroah-Hartman <[email protected]>
 * Copyright (C) 2008 - 2009 Novell Inc.
 */

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

#define CONTROL_RTS …
#define RESEND_CTS_STATE …

/* max number of write urbs in flight */
#define URB_UPPER_LIMIT …

/* This driver works for the Opticon 1D barcode reader
 * an examples of 1D barcode types are EAN, UPC, Code39, IATA etc.. */
#define DRIVER_DESC …

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

/* This structure holds all of the individual device information */
struct opticon_private { … };


static void opticon_process_data_packet(struct usb_serial_port *port,
					const unsigned char *buf, size_t len)
{ … }

static void opticon_process_status_packet(struct usb_serial_port *port,
					const unsigned char *buf, size_t len)
{ … }

static void opticon_process_read_urb(struct urb *urb)
{ … }

static int send_control_msg(struct usb_serial_port *port, u8 requesttype,
				u8 val)
{ … }

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

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

static void opticon_write_control_callback(struct urb *urb)
{ … }

static int opticon_write(struct tty_struct *tty, struct usb_serial_port *port,
			 const unsigned char *buf, int count)
{ … }

static unsigned int opticon_write_room(struct tty_struct *tty)
{ … }

static unsigned int opticon_chars_in_buffer(struct tty_struct *tty)
{ … }

static int opticon_tiocmget(struct tty_struct *tty)
{ … }

static int opticon_tiocmset(struct tty_struct *tty,
			   unsigned int set, unsigned int clear)
{ … }

static int opticon_port_probe(struct usb_serial_port *port)
{ … }

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

static struct usb_serial_driver opticon_device = …;

static struct usb_serial_driver * const serial_drivers[] = …;

module_usb_serial_driver(…);

MODULE_DESCRIPTION(…);
MODULE_LICENSE(…) …;