linux-imx

#define FLAG_EXPORT 2   /* protected by sysfs_lock */

#define FLAG_SYSFS  3   /* exported via /sys/class/gpio/control */

#define FLAG_ACTIVE_LOW 6   /* value has active low */

#define FLAG_OPEN_DRAIN 7   /* Gpio is open drain type */

#define FLAG_OPEN_SOURCE 8  /* Gpio is open source type */

#define FLAG_USED_AS_IRQ 9  /* GPIO is connected to an IRQ */

#define FLAG_IRQ_IS_ENABLED 10  /* GPIO is connected to an enabled IRQ */

#define FLAG_IS_HOGGED  11  /* GPIO is hogged */

#define FLAG_TRANSITORY 12  /* GPIO may lose value in sleep or reset */

​

    /* Connection label */

    const char      *label;

    /* Name of the GPIO */

    const char      *name;

};

​

int gpiod_request(struct gpio_desc *desc, const char *label);

void gpiod_free(struct gpio_desc *desc);

int gpiod_configure_flags(struct gpio_desc *desc, const char *con_id,