[mirror_ubuntu-bionic-kernel.git] / include / linux / acpi_gpio.h

#ifndef _LINUX_ACPI_GPIO_H_
#define _LINUX_ACPI_GPIO_H_

#include <linux/device.h>
#include <linux/err.h>
#include <linux/errno.h>
#include <linux/gpio.h>
#include <linux/gpio/consumer.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_GPIO_ACPI

struct gpio_desc *acpi_get_gpiod_by_index(struct device *dev, int index,
					  struct acpi_gpio_info *info);
void acpi_gpiochip_request_interrupts(struct gpio_chip *chip);
void acpi_gpiochip_free_interrupts(struct gpio_chip *chip);

#else /* CONFIG_GPIO_ACPI */

static inline struct gpio_desc *
acpi_get_gpiod_by_index(struct device *dev, int index,
			struct acpi_gpio_info *info)
{
	return ERR_PTR(-ENOSYS);
}

static inline void acpi_gpiochip_request_interrupts(struct gpio_chip *chip) { }
static inline void acpi_gpiochip_free_interrupts(struct gpio_chip *chip) { }

#endif /* CONFIG_GPIO_ACPI */

static inline int acpi_get_gpio_by_index(struct device *dev, int index,
					 struct acpi_gpio_info *info)
{
	struct gpio_desc *desc = acpi_get_gpiod_by_index(dev, index, info);

	if (IS_ERR(desc))
		return PTR_ERR(desc);
	return desc_to_gpio(desc);
}

#endif /* _LINUX_ACPI_GPIO_H_ */
Commit	Line	Data
e29482e8 MN	1	#ifndef _LINUX_ACPI_GPIO_H_
	2	#define _LINUX_ACPI_GPIO_H_
	3
12028d2d	4	#include <linux/device.h>
936e15dd	5	#include <linux/err.h>
e29482e8	6	#include <linux/errno.h>
0d1c28a4	7	#include <linux/gpio.h>
936e15dd	8	#include <linux/gpio/consumer.h>
e29482e8	9
12028d2d MW	10	/**
	11	* struct acpi_gpio_info - ACPI GPIO specific information
	12	* @gpioint: if %true this GPIO is of type GpioInt otherwise type is GpioIo
e01f440a	13	* @active_low: in case of @gpioint, the pin is active low
12028d2d MW	14	*/
	15	struct acpi_gpio_info {
	16	bool gpioint;
e01f440a	17	bool active_low;
12028d2d MW	18	};
12028d2d MW	19
e29482e8 MN	20	#ifdef CONFIG_GPIO_ACPI
e29482e8 MN	21
936e15dd MW	22	struct gpio_desc acpi_get_gpiod_by_index(struct device dev, int index,
936e15dd MW	23	struct acpi_gpio_info *info);
0d1c28a4	24	void acpi_gpiochip_request_interrupts(struct gpio_chip *chip);
7fc7acb9	25	void acpi_gpiochip_free_interrupts(struct gpio_chip *chip);
e29482e8 MN	26
	27	#else /* CONFIG_GPIO_ACPI */
	28
936e15dd MW	29	static inline struct gpio_desc *
	30	acpi_get_gpiod_by_index(struct device *dev, int index,
	31	struct acpi_gpio_info *info)
e29482e8	32	{
936e15dd	33	return ERR_PTR(-ENOSYS);
12028d2d MW	34	}
12028d2d MW	35
0d1c28a4	36	static inline void acpi_gpiochip_request_interrupts(struct gpio_chip *chip) { }
7fc7acb9	37	static inline void acpi_gpiochip_free_interrupts(struct gpio_chip *chip) { }
0d1c28a4	38
e29482e8 MN	39	#endif /* CONFIG_GPIO_ACPI */
e29482e8 MN	40
936e15dd MW	41	static 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
e29482e8	51	#endif /* _LINUX_ACPI_GPIO_H_ */