projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 664e3e5a MW |
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 | ||
| 5ccff852 MW |
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 | ||
| 664e3e5a MW |
28 | #ifdef CONFIG_ACPI |
| 29 | void acpi_gpiochip_add(struct gpio_chip *chip); | |
| 30 | void acpi_gpiochip_remove(struct gpio_chip *chip); | |
| 5ccff852 MW |
31 | |
| 32 | struct gpio_desc *acpi_get_gpiod_by_index(struct device *dev, int index, | |
| 33 | struct acpi_gpio_info *info); | |
| 664e3e5a MW |
34 | #else |
| 35 | static inline void acpi_gpiochip_add(struct gpio_chip *chip) { } | |
| 36 | static inline void acpi_gpiochip_remove(struct gpio_chip *chip) { } | |
| 5ccff852 MW |
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 | } | |
| 664e3e5a MW |
44 | #endif |
| 45 | ||
| 77c2d792 MW |
46 | int gpiochip_request_own_desc(struct gpio_desc *desc, const char *label); |
| 47 | void gpiochip_free_own_desc(struct gpio_desc *desc); | |
| 48 | ||
| 664e3e5a | 49 | #endif /* GPIOLIB_H */ |