linux/drivers/input/mouse/sermouse.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 *  Copyright (c) 1999-2001 Vojtech Pavlik
 */

/*
 *  Serial mouse driver for Linux
 */

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

#define DRIVER_DESC …

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

static const char *sermouse_protocols[] = …;

struct sermouse { … };

/*
 * sermouse_process_msc() analyzes the incoming MSC/Sun bytestream and
 * applies some prediction to the data, resulting in 96 updates per
 * second, which is as good as a PS/2 or USB mouse.
 */

static void sermouse_process_msc(struct sermouse *sermouse, signed char data)
{ … }

/*
 * sermouse_process_ms() anlyzes the incoming MS(Z/+/++) bytestream and
 * generates events. With prediction it gets 80 updates/sec, assuming
 * standard 3-byte packets and 1200 bps.
 */

static void sermouse_process_ms(struct sermouse *sermouse, signed char data)
{ … }

/*
 * sermouse_interrupt() handles incoming characters, either gathering them into
 * packets or passing them to the command routine as command output.
 */

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

/*
 * sermouse_disconnect() cleans up after we don't want talk
 * to the mouse anymore.
 */

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

/*
 * sermouse_connect() is a callback form the serio module when
 * an unhandled serio port is found.
 */

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

static struct serio_device_id sermouse_serio_ids[] = …;

MODULE_DEVICE_TABLE(serio, sermouse_serio_ids);

static struct serio_driver sermouse_drv = …;

module_serio_driver(…) …;