include/linux/acpi_gpio.h

   1 #ifndef _LINUX_ACPI_GPIO_H_
   2 #define _LINUX_ACPI_GPIO_H_
   3
   4 #include <linux/device.h>
   5 #include <linux/errno.h>
   6 #include <linux/gpio.h>
   7
   8 /**
   9  * struct acpi_gpio_info - ACPI GPIO specific information
  10  * @gpioint: if %true this GPIO is of type GpioInt otherwise type is GpioIo
  11  */
  12 struct acpi_gpio_info {
  13         bool gpioint;
  14 };
  15
  16 #ifdef CONFIG_GPIO_ACPI
  17
  18 int acpi_get_gpio(char *path, int pin);
  19 int acpi_get_gpio_by_index(struct device *dev, int index,
  20                            struct acpi_gpio_info *info);
  21 void acpi_gpiochip_request_interrupts(struct gpio_chip *chip);
  22 void acpi_gpiochip_free_interrupts(struct gpio_chip *chip);
  23
  24 #else /* CONFIG_GPIO_ACPI */
  25
  26 static inline int acpi_get_gpio(char *path, int pin)
  27 {
  28         return -ENODEV;
  29 }
  30
  31 static inline int acpi_get_gpio_by_index(struct device *dev, int index,
  32                                          struct acpi_gpio_info *info)
  33 {
  34         return -ENODEV;
  35 }
  36
  37 static inline void acpi_gpiochip_request_interrupts(struct gpio_chip *chip) { }
  38 static inline void acpi_gpiochip_free_interrupts(struct gpio_chip *chip) { }
  39
  40 #endif /* CONFIG_GPIO_ACPI */
  41
  42 #endif /* _LINUX_ACPI_GPIO_H_ */