linux/drivers/input/serio/altera_ps2.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Altera University Program PS2 controller driver
 *
 * Copyright (C) 2008 Thomas Chou <[email protected]>
 *
 * Based on sa1111ps2.c, which is:
 * Copyright (C) 2002 Russell King
 */

#include <linux/module.h>
#include <linux/input.h>
#include <linux/serio.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
#include <linux/io.h>
#include <linux/slab.h>
#include <linux/of.h>

#define DRV_NAME …

struct ps2if { … };

/*
 * Read all bytes waiting in the PS2 port.  There should be
 * at the most one, but we loop for safety.
 */
static irqreturn_t altera_ps2_rxint(int irq, void *dev_id)
{ … }

/*
 * Write a byte to the PS2 port.
 */
static int altera_ps2_write(struct serio *io, unsigned char val)
{ … }

static int altera_ps2_open(struct serio *io)
{ … }

static void altera_ps2_close(struct serio *io)
{ … }

/*
 * Add one device to this driver.
 */
static int altera_ps2_probe(struct platform_device *pdev)
{ … }

/*
 * Remove one device from this driver.
 */
static void altera_ps2_remove(struct platform_device *pdev)
{ … }

#ifdef CONFIG_OF
static const struct of_device_id altera_ps2_match[] = …;
MODULE_DEVICE_TABLE(of, altera_ps2_match);
#endif /* CONFIG_OF */

/*
 * Our device driver structure
 */
static struct platform_driver altera_ps2_driver = …;
module_platform_driver(…) …;

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