mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-04 22:26:40 +07:00
e01f440a68
The ACPI GpioInt resources contain polarity field that is used to specify whether the interrupt is active high or low. Since gpiolib supports GPIOF_ACTIVE_LOW we can pass this information in the flags field in acpi_find_gpio(), analogous to the DeviceTree version. Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by: Alexandre Courbot <acourbot@nvidia.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
52 lines
1.3 KiB
C
52 lines
1.3 KiB
C
#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_ */
|