62 строки
1.5 KiB
C
62 строки
1.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* ACPI helpers for GPIO API
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*
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* Copyright (C) 2012,2019 Intel Corporation
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*/
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#ifndef GPIOLIB_ACPI_H
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#define GPIOLIB_ACPI_H
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#include <linux/err.h>
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#include <linux/errno.h>
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#include <linux/types.h>
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#include <linux/gpio/consumer.h>
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struct device;
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struct fwnode_handle;
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struct gpio_chip;
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struct gpio_desc;
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struct gpio_device;
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#ifdef CONFIG_ACPI
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void acpi_gpiochip_add(struct gpio_chip *chip);
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void acpi_gpiochip_remove(struct gpio_chip *chip);
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void acpi_gpiochip_request_interrupts(struct gpio_chip *chip);
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void acpi_gpiochip_free_interrupts(struct gpio_chip *chip);
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struct gpio_desc *acpi_find_gpio(struct fwnode_handle *fwnode,
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const char *con_id,
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unsigned int idx,
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enum gpiod_flags *dflags,
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unsigned long *lookupflags);
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int acpi_gpio_count(struct device *dev, const char *con_id);
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#else
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static inline void acpi_gpiochip_add(struct gpio_chip *chip) { }
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static inline void acpi_gpiochip_remove(struct gpio_chip *chip) { }
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static inline void
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acpi_gpiochip_request_interrupts(struct gpio_chip *chip) { }
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static inline void
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acpi_gpiochip_free_interrupts(struct gpio_chip *chip) { }
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static inline struct gpio_desc *
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acpi_find_gpio(struct fwnode_handle *fwnode, const char *con_id,
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unsigned int idx, enum gpiod_flags *dflags,
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unsigned long *lookupflags)
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{
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return ERR_PTR(-ENOENT);
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}
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static inline int acpi_gpio_count(struct device *dev, const char *con_id)
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{
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return -ENODEV;
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}
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#endif
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#endif /* GPIOLIB_ACPI_H */
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