linux/drivers/input/keyboard/gpio_keys_polled.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 *  Driver for buttons on GPIO lines not capable of generating interrupts
 *
 *  Copyright (C) 2007-2010 Gabor Juhos <[email protected]>
 *  Copyright (C) 2010 Nuno Goncalves <[email protected]>
 *
 *  This file was based on: /drivers/input/misc/cobalt_btns.c
 *	Copyright (C) 2007 Yoichi Yuasa <[email protected]>
 *
 *  also was based on: /drivers/input/keyboard/gpio_keys.c
 *	Copyright 2005 Phil Blundell
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/input.h>
#include <linux/ioport.h>
#include <linux/platform_device.h>
#include <linux/gpio.h>
#include <linux/gpio/consumer.h>
#include <linux/gpio_keys.h>
#include <linux/property.h>

#define DRV_NAME …

struct gpio_keys_button_data { … };

struct gpio_keys_polled_dev { … };

static void gpio_keys_button_event(struct input_dev *input,
				   const struct gpio_keys_button *button,
				   int state)
{ … }

static void gpio_keys_polled_check_state(struct input_dev *input,
					 const struct gpio_keys_button *button,
					 struct gpio_keys_button_data *bdata)
{ … }

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

static int gpio_keys_polled_open(struct input_dev *input)
{ … }

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

static struct gpio_keys_platform_data *
gpio_keys_polled_get_devtree_pdata(struct device *dev)
{ … }

static void gpio_keys_polled_set_abs_params(struct input_dev *input,
	const struct gpio_keys_platform_data *pdata, unsigned int code)
{ … }

static const struct of_device_id gpio_keys_polled_of_match[] = …;
MODULE_DEVICE_TABLE(of, gpio_keys_polled_of_match);

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

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

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