#define IIO_ST(si, rb, sb, sh)                                         \
        { .sign = si, .realbits = rb, .storagebits = sb, .shift = sh }
 
-/* Macro assumes input channels */
-#define IIO_CHAN(_type, _mod, _indexed, _proc, _name, _chan, _chan2, \
-                _inf_mask, _address, _si, _stype, _event_mask)         \
-       { .type = _type,                                                \
-         .output = 0,                                                  \
-         .modified = _mod,                                             \
-         .indexed = _indexed,                                          \
-         .processed_val = _proc,                                       \
-         .extend_name = _name,                                         \
-         .channel = _chan,                                             \
-         .channel2 = _chan2,                                           \
-         .info_mask = _inf_mask,                                       \
-         .address = _address,                                          \
-         .scan_index = _si,                                            \
-         .scan_type = _stype,                                          \
-         .event_mask = _event_mask }
-
 #define IIO_CHAN_SOFT_TIMESTAMP(_si)                                   \
        { .type = IIO_TIMESTAMP, .channel = -1,                         \
                        .scan_index = _si, .scan_type = IIO_ST('s', 64, 64, 0) }