mma7660_set_mode
ret = mma7660_set_mode(data, MMA7660_MODE_ACTIVE);
mma7660_set_mode(data, MMA7660_MODE_STANDBY);
ret = mma7660_set_mode(iio_priv(indio_dev), MMA7660_MODE_STANDBY);
return mma7660_set_mode(data, MMA7660_MODE_STANDBY);
return mma7660_set_mode(data, MMA7660_MODE_ACTIVE);