linux/drivers/input/touchscreen/egalax_ts_serial.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * EETI Egalax serial touchscreen driver
 *
 * Copyright (c) 2015 Zoltán Böszörményi <[email protected]>
 *
 * based on the
 *
 * Hampshire serial touchscreen driver (Copyright (c) 2010 Adam Bennett)
 */


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

#define DRIVER_DESC …

/*
 * Definitions & global arrays.
 */

#define EGALAX_FORMAT_MAX_LENGTH …
#define EGALAX_FORMAT_START_BIT …
#define EGALAX_FORMAT_PRESSURE_BIT …
#define EGALAX_FORMAT_TOUCH_BIT …
#define EGALAX_FORMAT_RESOLUTION_MASK …

#define EGALAX_MIN_XC …
#define EGALAX_MAX_XC …
#define EGALAX_MIN_YC …
#define EGALAX_MAX_YC …

/*
 * Per-touchscreen data.
 */
struct egalax { … };

static void egalax_process_data(struct egalax *egalax)
{ … }

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

/*
 * egalax_connect() is the routine that is called when someone adds a
 * new serio device that supports egalax protocol and registers it as
 * an input device. This is usually accomplished using inputattach.
 */
static int egalax_connect(struct serio *serio, struct serio_driver *drv)
{ … }

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

/*
 * The serio driver structure.
 */

static const struct serio_device_id egalax_serio_ids[] = …;

MODULE_DEVICE_TABLE(serio, egalax_serio_ids);

static struct serio_driver egalax_drv = …;
module_serio_driver(…) …;

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