drv_io_expander.h

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#pragma once

#include <stdint.h>
#include <sys/ioctl.h>

/*
 * ioctl() definitions
 */

#define _IOXIOCBASE     (0x2800)
#define _IOXIOC(_n)     (_IOC(_IOXIOCBASE, _n))

#define IOX_SET_MASK        _IOXIOC(1)

#define IOX_GET_MASK        _IOXIOC(2)

#define IOX_SET_MODE        _IOXIOC(3)

#define IOX_SET_VALUE       _IOXIOC(4)

/* ... to IOX_SET_VALUE + 8 */

/* enum passed to RGBLED_SET_MODE ioctl()*/
enum IOX_MODE {
    IOX_MODE_OFF,
    IOX_MODE_ON,
    IOX_MODE_TEST_OUT
};