blob: 1a4103dd38df4695a35a316d4903fabc872aaec0 [file] [log] [blame]
* Internal GPIO functions.
* Copyright (C) 2013, Intel Corporation
* Author: Mika Westerberg <>
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
#ifndef GPIOLIB_H
#define GPIOLIB_H
#include <linux/err.h>
#include <linux/device.h>
enum of_gpio_flags;
* struct acpi_gpio_info - ACPI GPIO specific information
* @gpioint: if %true this GPIO is of type GpioInt otherwise type is GpioIo
* @active_low: in case of @gpioint, the pin is active low
struct acpi_gpio_info {
bool gpioint;
bool active_low;
void acpi_gpiochip_add(struct gpio_chip *chip);
void acpi_gpiochip_remove(struct gpio_chip *chip);
struct gpio_desc *acpi_get_gpiod_by_index(struct device *dev, int index,
struct acpi_gpio_info *info);
static inline void acpi_gpiochip_add(struct gpio_chip *chip) { }
static inline void acpi_gpiochip_remove(struct gpio_chip *chip) { }
static inline struct gpio_desc *
acpi_get_gpiod_by_index(struct device *dev, int index,
struct acpi_gpio_info *info)
return ERR_PTR(-ENOSYS);
int gpiochip_request_own_desc(struct gpio_desc *desc, const char *label);
void gpiochip_free_own_desc(struct gpio_desc *desc);
struct gpio_desc *of_get_named_gpiod_flags(struct device_node *np,
const char *list_name, int index, enum of_gpio_flags *flags);
#endif /* GPIOLIB_H */