| Mika Westerberg | 664e3e5 | 2014-01-08 12:40:54 +0200 | [diff] [blame] | 1 | /* |
| 2 | * Internal GPIO functions. |
| 3 | * |
| 4 | * Copyright (C) 2013, Intel Corporation |
| 5 | * Author: Mika Westerberg <mika.westerberg@linux.intel.com> |
| 6 | * |
| 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. |
| 10 | */ |
| 11 | |
| 12 | #ifndef GPIOLIB_H |
| 13 | #define GPIOLIB_H |
| 14 | |
| Mika Westerberg | 5ccff85 | 2014-01-08 12:40:56 +0200 | [diff] [blame] | 15 | #include <linux/err.h> |
| 16 | #include <linux/device.h> |
| 17 | |
| 18 | /** |
| 19 | * struct acpi_gpio_info - ACPI GPIO specific information |
| 20 | * @gpioint: if %true this GPIO is of type GpioInt otherwise type is GpioIo |
| 21 | * @active_low: in case of @gpioint, the pin is active low |
| 22 | */ |
| 23 | struct acpi_gpio_info { |
| 24 | bool gpioint; |
| 25 | bool active_low; |
| 26 | }; |
| 27 | |
| Mika Westerberg | 664e3e5 | 2014-01-08 12:40:54 +0200 | [diff] [blame] | 28 | #ifdef CONFIG_ACPI |
| 29 | void acpi_gpiochip_add(struct gpio_chip *chip); |
| 30 | void acpi_gpiochip_remove(struct gpio_chip *chip); |
| Mika Westerberg | 5ccff85 | 2014-01-08 12:40:56 +0200 | [diff] [blame] | 31 | |
| 32 | struct gpio_desc *acpi_get_gpiod_by_index(struct device *dev, int index, |
| 33 | struct acpi_gpio_info *info); |
| Mika Westerberg | 664e3e5 | 2014-01-08 12:40:54 +0200 | [diff] [blame] | 34 | #else |
| 35 | static inline void acpi_gpiochip_add(struct gpio_chip *chip) { } |
| 36 | static inline void acpi_gpiochip_remove(struct gpio_chip *chip) { } |
| Mika Westerberg | 5ccff85 | 2014-01-08 12:40:56 +0200 | [diff] [blame] | 37 | |
| 38 | static inline struct gpio_desc * |
| 39 | acpi_get_gpiod_by_index(struct device *dev, int index, |
| 40 | struct acpi_gpio_info *info) |
| 41 | { |
| 42 | return ERR_PTR(-ENOSYS); |
| 43 | } |
| Mika Westerberg | 664e3e5 | 2014-01-08 12:40:54 +0200 | [diff] [blame] | 44 | #endif |
| 45 | |
| 46 | #endif /* GPIOLIB_H */ |