_set_rate
return _set_rate(mix, mux_val, div_val, 1, 1);
return _set_rate(mix, mux_val, div_val, 1, div_val ? 1 : 0);
return _set_rate(mix,
return _set_rate(mix, _get_mux_val(mix, i),
.set_rate = name ## _set_rate, \