linux/drivers/input/misc/gpio_decoder.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright (C) 2016 Texas Instruments Incorporated - http://www.ti.com/
 *
 * A generic driver to read multiple gpio lines and translate the
 * encoded numeric value into an input event.
 */

#include <linux/device.h>
#include <linux/gpio/consumer.h>
#include <linux/input.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/platform_device.h>

struct gpio_decoder { … };

static int gpio_decoder_get_gpios_state(struct gpio_decoder *decoder)
{ … }

static void gpio_decoder_poll_gpios(struct input_dev *input)
{ … }

static int gpio_decoder_probe(struct platform_device *pdev)
{ … }

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

static struct platform_driver gpio_decoder_driver = …;
module_platform_driver(…) …;

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