linux/drivers/gpio/gpio-rdc321x.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * RDC321x GPIO driver
 *
 * Copyright (C) 2008, Volker Weiss <[email protected]>
 * Copyright (C) 2007-2010 Florian Fainelli <[email protected]>
 */
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/spinlock.h>
#include <linux/platform_device.h>
#include <linux/pci.h>
#include <linux/gpio/driver.h>
#include <linux/mfd/rdc321x.h>
#include <linux/slab.h>

struct rdc321x_gpio { … };

/* read GPIO pin */
static int rdc_gpio_get_value(struct gpio_chip *chip, unsigned gpio)
{ … }

static void rdc_gpio_set_value_impl(struct gpio_chip *chip,
				unsigned gpio, int value)
{ … }

/* set GPIO pin to value */
static void rdc_gpio_set_value(struct gpio_chip *chip,
				unsigned gpio, int value)
{ … }

static int rdc_gpio_config(struct gpio_chip *chip,
				unsigned gpio, int value)
{ … }

/* configure GPIO pin as input */
static int rdc_gpio_direction_input(struct gpio_chip *chip, unsigned gpio)
{ … }

/*
 * Cache the initial value of both GPIO data registers
 */
static int rdc321x_gpio_probe(struct platform_device *pdev)
{ … }

static struct platform_driver rdc321x_gpio_driver = …;

module_platform_driver(…) …;

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