drv_mixer.h

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#ifndef _DRV_MIXER_H
#define _DRV_MIXER_H

#include <px4_defines.h>
#include <stdint.h>
#include <sys/ioctl.h>

#define MIXER0_DEVICE_PATH      "/dev/mixer0"

/*
 * ioctl() definitions
 */
#define _MIXERIOCBASE       (0x2500)
#define _MIXERIOC(_n)       (_PX4_IOC(_MIXERIOCBASE, _n))

#define MIXERIOCGETOUTPUTCOUNT  _MIXERIOC(0)

#define MIXERIOCRESET       _MIXERIOC(1)

#define MIXERIOCADDSIMPLE   _MIXERIOC(2)

/* _MIXERIOC(3) was deprecated */
/* _MIXERIOC(4) was deprecated */

#define MIXERIOCLOADBUF     _MIXERIOC(5)

/*
 * XXX Thoughts for additional operations:
 *
 * - get/set output scale, for tuning center/limit values.
 * - save/serialise for saving tuned mixers.
 */

#endif /* _DRV_ACCEL_H */