LTC2983_CHAN
LTC2983_CHAN(IIO_RESISTANCE, iio_chan_r++, chan);
LTC2983_CHAN(IIO_TEMP, iio_chan_t++, chan);
LTC2983_CHAN(IIO_RESISTANCE, iio_chan_r++, chan);
LTC2983_CHAN(IIO_COVERAGE, iio_chan_c++, chan);
LTC2983_CHAN(IIO_RESISTANCE, iio_chan_r++, chan);
st->iio_chan[iio_idx++] = LTC2983_CHAN(chan_type, (*iio_chan)++,