linux/drivers/input/joystick/stinger.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 *  Copyright (c) 2000-2001 Vojtech Pavlik
 *  Copyright (c) 2000 Mark Fletcher
 */

/*
 * Gravis Stinger gamepad driver for Linux
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/input.h>
#include <linux/serio.h>

#define DRIVER_DESC …

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

/*
 * Constants.
 */

#define STINGER_MAX_LENGTH …

/*
 * Per-Stinger data.
 */

struct stinger { … };

/*
 * stinger_process_packet() decodes packets the driver receives from the
 * Stinger. It updates the data accordingly.
 */

static void stinger_process_packet(struct stinger *stinger)
{ … }

/*
 * stinger_interrupt() is called by the low level driver when characters
 * are ready for us. We then buffer them for further processing, or call the
 * packet processing routine.
 */

static irqreturn_t stinger_interrupt(struct serio *serio,
	unsigned char data, unsigned int flags)
{ … }

/*
 * stinger_disconnect() is the opposite of stinger_connect()
 */

static void stinger_disconnect(struct serio *serio)
{ … }

/*
 * stinger_connect() is the routine that is called when someone adds a
 * new serio device that supports Stinger protocol and registers it as
 * an input device.
 */

static int stinger_connect(struct serio *serio, struct serio_driver *drv)
{ … }

/*
 * The serio driver structure.
 */

static const struct serio_device_id stinger_serio_ids[] = …;

MODULE_DEVICE_TABLE(serio, stinger_serio_ids);

static struct serio_driver stinger_drv = …;

module_serio_driver(…) …;