1// SPDX-License-Identifier: GPL-2.0
2#include <linux/gpio/consumer.h>
3#include <linux/gpio/driver.h>
4
5#include <linux/gpio.h>
6
7#include "gpiolib.h"
8
9/*
10 * **DEPRECATED** This function is deprecated and must not be used in new code.
11 */
12void gpio_free(unsigned gpio)
13{
14	gpiod_free(gpio_to_desc(gpio));
15}
16EXPORT_SYMBOL_GPL(gpio_free);
17
18/**
19 * gpio_request_one - request a single GPIO with initial configuration
20 * @gpio:	the GPIO number
21 * @flags:	GPIO configuration as specified by GPIOF_*
22 * @label:	a literal description string of this GPIO
23 *
24 * **DEPRECATED** This function is deprecated and must not be used in new code.
25 */
26int gpio_request_one(unsigned gpio, unsigned long flags, const char *label)
27{
28	struct gpio_desc *desc;
29	int err;
30
31	/* Compatibility: assume unavailable "valid" GPIOs will appear later */
32	desc = gpio_to_desc(gpio);
33	if (!desc)
34		return -EPROBE_DEFER;
35
36	err = gpiod_request(desc, label);
37	if (err)
38		return err;
39
40	if (flags & GPIOF_ACTIVE_LOW)
41		set_bit(FLAG_ACTIVE_LOW, &desc->flags);
42
43	if (flags & GPIOF_DIR_IN)
44		err = gpiod_direction_input(desc);
45	else
46		err = gpiod_direction_output_raw(desc,
47				(flags & GPIOF_INIT_HIGH) ? 1 : 0);
48
49	if (err)
50		goto free_gpio;
51
52	return 0;
53
54 free_gpio:
55	gpiod_free(desc);
56	return err;
57}
58EXPORT_SYMBOL_GPL(gpio_request_one);
59
60/*
61 * **DEPRECATED** This function is deprecated and must not be used in new code.
62 */
63int gpio_request(unsigned gpio, const char *label)
64{
65	struct gpio_desc *desc;
66
67	/* Compatibility: assume unavailable "valid" GPIOs will appear later */
68	desc = gpio_to_desc(gpio);
69	if (!desc)
70		return -EPROBE_DEFER;
71
72	return gpiod_request(desc, label);
73}
74EXPORT_SYMBOL_GPL(gpio_request);
75