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1/* SPDX-License-Identifier: GPL-2.0 */2/*3 * ACPI helpers for GPIO API4 *5 * Copyright (C) 2012,2019 Intel Corporation6 */7 8#ifndef GPIOLIB_ACPI_H9#define GPIOLIB_ACPI_H10 11#include <linux/err.h>12#include <linux/types.h>13 14#include <linux/gpio/consumer.h>15 16struct device;17struct fwnode_handle;18 19struct gpio_chip;20struct gpio_desc;21struct gpio_device;22 23#ifdef CONFIG_ACPI24void acpi_gpiochip_add(struct gpio_chip *chip);25void acpi_gpiochip_remove(struct gpio_chip *chip);26 27void acpi_gpiochip_request_interrupts(struct gpio_chip *chip);28void acpi_gpiochip_free_interrupts(struct gpio_chip *chip);29 30struct gpio_desc *acpi_find_gpio(struct fwnode_handle *fwnode,31 const char *con_id,32 unsigned int idx,33 enum gpiod_flags *dflags,34 unsigned long *lookupflags);35 36int acpi_gpio_count(const struct fwnode_handle *fwnode, const char *con_id);37#else38static inline void acpi_gpiochip_add(struct gpio_chip *chip) { }39static inline void acpi_gpiochip_remove(struct gpio_chip *chip) { }40 41static inline void42acpi_gpiochip_request_interrupts(struct gpio_chip *chip) { }43 44static inline void45acpi_gpiochip_free_interrupts(struct gpio_chip *chip) { }46 47static inline struct gpio_desc *48acpi_find_gpio(struct fwnode_handle *fwnode, const char *con_id,49 unsigned int idx, enum gpiod_flags *dflags,50 unsigned long *lookupflags)51{52 return ERR_PTR(-ENOENT);53}54static inline int acpi_gpio_count(const struct fwnode_handle *fwnode,55 const char *con_id)56{57 return -ENODEV;58}59#endif60 61#endif /* GPIOLIB_ACPI_H */62