linux/drivers/gpio/gpio-timberdale.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Timberdale FPGA GPIO driver
 * Author: Mocean Laboratories
 * Copyright (c) 2009 Intel Corporation
 */

/* Supports:
 * Timberdale FPGA GPIO
 */

#include <linux/init.h>
#include <linux/gpio/driver.h>
#include <linux/platform_device.h>
#include <linux/irq.h>
#include <linux/io.h>
#include <linux/timb_gpio.h>
#include <linux/interrupt.h>
#include <linux/slab.h>

#define DRIVER_NAME …

#define TGPIOVAL …
#define TGPIODIR …
#define TGPIO_IER …
#define TGPIO_ISR …
#define TGPIO_IPR …
#define TGPIO_ICR …
#define TGPIO_FLR …
#define TGPIO_LVR …
#define TGPIO_VER …
#define TGPIO_BFLR …

struct timbgpio { … };

static int timbgpio_update_bit(struct gpio_chip *gpio, unsigned index,
	unsigned offset, bool enabled)
{ … }

static int timbgpio_gpio_direction_input(struct gpio_chip *gpio, unsigned nr)
{ … }

static int timbgpio_gpio_get(struct gpio_chip *gpio, unsigned nr)
{ … }

static int timbgpio_gpio_direction_output(struct gpio_chip *gpio,
						unsigned nr, int val)
{ … }

static void timbgpio_gpio_set(struct gpio_chip *gpio,
				unsigned nr, int val)
{ … }

static int timbgpio_to_irq(struct gpio_chip *gpio, unsigned offset)
{ … }

/*
 * GPIO IRQ
 */
static void timbgpio_irq_disable(struct irq_data *d)
{ … }

static void timbgpio_irq_enable(struct irq_data *d)
{ … }

static int timbgpio_irq_type(struct irq_data *d, unsigned trigger)
{ … }

static void timbgpio_irq(struct irq_desc *desc)
{ … }

static struct irq_chip timbgpio_irqchip = …;

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

static struct platform_driver timbgpio_platform_driver = …;

/*--------------------------------------------------------------------------*/

builtin_platform_driver(…) …;