linux/drivers/gpio/gpiolib-legacy.c

// SPDX-License-Identifier: GPL-2.0
#include <linux/bitops.h>
#include <linux/device.h>
#include <linux/errno.h>
#include <linux/export.h>
#include <linux/gfp.h>

#include <linux/gpio/consumer.h>
#include <linux/gpio/driver.h>

#include <linux/gpio.h>

#include "gpiolib.h"

/*
 * **DEPRECATED** This function is deprecated and must not be used in new code.
 */
void gpio_free(unsigned gpio)
{ … }
EXPORT_SYMBOL_GPL(…);

/**
 * gpio_request_one - request a single GPIO with initial configuration
 * @gpio:	the GPIO number
 * @flags:	GPIO configuration as specified by GPIOF_*
 * @label:	a literal description string of this GPIO
 *
 * **DEPRECATED** This function is deprecated and must not be used in new code.
 *
 * Returns:
 * 0 on success, or negative errno on failure.
 */
int gpio_request_one(unsigned gpio, unsigned long flags, const char *label)
{ … }
EXPORT_SYMBOL_GPL(…);

/*
 * **DEPRECATED** This function is deprecated and must not be used in new code.
 */
int gpio_request(unsigned gpio, const char *label)
{ … }
EXPORT_SYMBOL_GPL(…);

static void devm_gpio_release(struct device *dev, void *res)
{ … }

/**
 * devm_gpio_request - request a GPIO for a managed device
 * @dev: device to request the GPIO for
 * @gpio: GPIO to allocate
 * @label: the name of the requested GPIO
 *
 * Except for the extra @dev argument, this function takes the
 * same arguments and performs the same function as gpio_request().
 * GPIOs requested with this function will be automatically freed
 * on driver detach.
 *
 * **DEPRECATED** This function is deprecated and must not be used in new code.
 *
 * Returns:
 * 0 on success, or negative errno on failure.
 */
int devm_gpio_request(struct device *dev, unsigned gpio, const char *label)
{ … }
EXPORT_SYMBOL_GPL(…);

/**
 * devm_gpio_request_one - request a single GPIO with initial setup
 * @dev: device to request for
 * @gpio: the GPIO number
 * @flags: GPIO configuration as specified by GPIOF_*
 * @label: a literal description string of this GPIO
 *
 * **DEPRECATED** This function is deprecated and must not be used in new code.
 *
 * Returns:
 * 0 on success, or negative errno on failure.
 */
int devm_gpio_request_one(struct device *dev, unsigned gpio,
			  unsigned long flags, const char *label)
{ … }
EXPORT_SYMBOL_GPL(…);