Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1#ifndef _LINUX_ACPI_GPIO_H_
2#define _LINUX_ACPI_GPIO_H_
3
4#include <linux/device.h>
5#include <linux/err.h>
6#include <linux/errno.h>
7#include <linux/gpio.h>
8#include <linux/gpio/consumer.h>
9
10/**
11 * struct acpi_gpio_info - ACPI GPIO specific information
12 * @gpioint: if %true this GPIO is of type GpioInt otherwise type is GpioIo
13 * @active_low: in case of @gpioint, the pin is active low
14 */
15struct acpi_gpio_info {
16 bool gpioint;
17 bool active_low;
18};
19
20#ifdef CONFIG_GPIO_ACPI
21
22struct gpio_desc *acpi_get_gpiod_by_index(struct device *dev, int index,
23 struct acpi_gpio_info *info);
24void acpi_gpiochip_request_interrupts(struct gpio_chip *chip);
25void acpi_gpiochip_free_interrupts(struct gpio_chip *chip);
26
27#else /* CONFIG_GPIO_ACPI */
28
29static inline struct gpio_desc *
30acpi_get_gpiod_by_index(struct device *dev, int index,
31 struct acpi_gpio_info *info)
32{
33 return ERR_PTR(-ENOSYS);
34}
35
36static inline void acpi_gpiochip_request_interrupts(struct gpio_chip *chip) { }
37static inline void acpi_gpiochip_free_interrupts(struct gpio_chip *chip) { }
38
39#endif /* CONFIG_GPIO_ACPI */
40
41static inline int acpi_get_gpio_by_index(struct device *dev, int index,
42 struct acpi_gpio_info *info)
43{
44 struct gpio_desc *desc = acpi_get_gpiod_by_index(dev, index, info);
45
46 if (IS_ERR(desc))
47 return PTR_ERR(desc);
48 return desc_to_gpio(desc);
49}
50
51#endif /* _LINUX_ACPI_GPIO_H_ */