| /* |
| * Internal GPIO functions. |
| * |
| * Copyright (C) 2013, Intel Corporation |
| * Author: Mika Westerberg <mika.westerberg@linux.intel.com> |
| * |
| * 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> |
| |
| /** |
| * 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; |
| }; |
| |
| #ifdef CONFIG_ACPI |
| 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); |
| #else |
| 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); |
| } |
| #endif |
| |
| int gpiochip_request_own_desc(struct gpio_desc *desc, const char *label); |
| void gpiochip_free_own_desc(struct gpio_desc *desc); |
| |
| #endif /* GPIOLIB_H */ |
