75 lines
1.6 KiB
C
75 lines
1.6 KiB
C
// SPDX-License-Identifier: GPL-2.0
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#include <linux/gpio/consumer.h>
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#include <linux/gpio/driver.h>
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#include <linux/gpio.h>
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#include "gpiolib.h"
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/*
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* **DEPRECATED** This function is deprecated and must not be used in new code.
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*/
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void gpio_free(unsigned gpio)
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{
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gpiod_free(gpio_to_desc(gpio));
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}
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EXPORT_SYMBOL_GPL(gpio_free);
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/**
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* gpio_request_one - request a single GPIO with initial configuration
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* @gpio: the GPIO number
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* @flags: GPIO configuration as specified by GPIOF_*
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* @label: a literal description string of this GPIO
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*
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* **DEPRECATED** This function is deprecated and must not be used in new code.
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*/
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int gpio_request_one(unsigned gpio, unsigned long flags, const char *label)
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{
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struct gpio_desc *desc;
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int err;
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/* Compatibility: assume unavailable "valid" GPIOs will appear later */
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desc = gpio_to_desc(gpio);
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if (!desc)
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return -EPROBE_DEFER;
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err = gpiod_request(desc, label);
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if (err)
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return err;
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if (flags & GPIOF_ACTIVE_LOW)
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set_bit(FLAG_ACTIVE_LOW, &desc->flags);
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if (flags & GPIOF_DIR_IN)
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err = gpiod_direction_input(desc);
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else
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err = gpiod_direction_output_raw(desc,
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(flags & GPIOF_INIT_HIGH) ? 1 : 0);
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if (err)
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goto free_gpio;
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return 0;
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free_gpio:
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gpiod_free(desc);
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return err;
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}
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EXPORT_SYMBOL_GPL(gpio_request_one);
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/*
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* **DEPRECATED** This function is deprecated and must not be used in new code.
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*/
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int gpio_request(unsigned gpio, const char *label)
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{
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struct gpio_desc *desc;
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/* Compatibility: assume unavailable "valid" GPIOs will appear later */
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desc = gpio_to_desc(gpio);
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if (!desc)
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return -EPROBE_DEFER;
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return gpiod_request(desc, label);
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}
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EXPORT_SYMBOL_GPL(gpio_request);
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