2 * Internal GPIO functions.
4 * Copyright (C) 2013, Intel Corporation
5 * Author: Mika Westerberg <mika.westerberg@linux.intel.com>
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
15 #include <linux/err.h>
16 #include <linux/device.h>
21 * struct acpi_gpio_info - ACPI GPIO specific information
22 * @gpioint: if %true this GPIO is of type GpioInt otherwise type is GpioIo
23 * @active_low: in case of @gpioint, the pin is active low
25 struct acpi_gpio_info {
31 void acpi_gpiochip_add(struct gpio_chip *chip);
32 void acpi_gpiochip_remove(struct gpio_chip *chip);
34 struct gpio_desc *acpi_get_gpiod_by_index(struct device *dev, int index,
35 struct acpi_gpio_info *info);
37 static inline void acpi_gpiochip_add(struct gpio_chip *chip) { }
38 static inline void acpi_gpiochip_remove(struct gpio_chip *chip) { }
40 static inline struct gpio_desc *
41 acpi_get_gpiod_by_index(struct device *dev, int index,
42 struct acpi_gpio_info *info)
44 return ERR_PTR(-ENOSYS);
48 int gpiochip_request_own_desc(struct gpio_desc *desc, const char *label);
49 void gpiochip_free_own_desc(struct gpio_desc *desc);
51 struct gpio_desc *of_get_named_gpiod_flags(struct device_node *np,
52 const char *list_name, int index, enum of_gpio_flags *flags);
54 #endif /* GPIOLIB_H */