linux/drivers/gpio/gpio-74x164.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 *  74Hx164 - Generic serial-in/parallel-out 8-bits shift register GPIO driver
 *
 *  Copyright (C) 2010 Gabor Juhos <[email protected]>
 *  Copyright (C) 2010 Miguel Gaio <[email protected]>
 */

#include <linux/bitops.h>
#include <linux/gpio/consumer.h>
#include <linux/gpio/driver.h>
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/property.h>
#include <linux/slab.h>
#include <linux/spi/spi.h>

#define GEN_74X164_NUMBER_GPIOS …

struct gen_74x164_chip { … };

static int __gen_74x164_write_config(struct gen_74x164_chip *chip)
{ … }

static int gen_74x164_get_value(struct gpio_chip *gc, unsigned offset)
{ … }

static void gen_74x164_set_value(struct gpio_chip *gc,
		unsigned offset, int val)
{ … }

static void gen_74x164_set_multiple(struct gpio_chip *gc, unsigned long *mask,
				    unsigned long *bits)
{ … }

static int gen_74x164_direction_output(struct gpio_chip *gc,
		unsigned offset, int val)
{ … }

static int gen_74x164_probe(struct spi_device *spi)
{ … }

static void gen_74x164_remove(struct spi_device *spi)
{ … }

static const struct spi_device_id gen_74x164_spi_ids[] = …;
MODULE_DEVICE_TABLE(spi, gen_74x164_spi_ids);

static const struct of_device_id gen_74x164_dt_ids[] = …;
MODULE_DEVICE_TABLE(of, gen_74x164_dt_ids);

static struct spi_driver gen_74x164_driver = …;
module_spi_driver(…) …;

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