+ value = 0;
+ switch (ch->u.ofdm.transmission_mode) {
+ case TRANSMISSION_MODE_2K: value |= (0 << 7); break;
+ default:
+ case TRANSMISSION_MODE_8K: value |= (1 << 7); break;
+ }
+ switch (ch->u.ofdm.guard_interval) {
+ case GUARD_INTERVAL_1_32: value |= (0 << 5); break;
+ case GUARD_INTERVAL_1_16: value |= (1 << 5); break;
+ case GUARD_INTERVAL_1_4: value |= (3 << 5); break;
+ default:
+ case GUARD_INTERVAL_1_8: value |= (2 << 5); break;
+ }
+ switch (ch->u.ofdm.constellation) {
+ case QPSK: value |= (0 << 3); break;
+ case QAM_16: value |= (1 << 3); break;
+ default:
+ case QAM_64: value |= (2 << 3); break;
+ }
+ switch (HIERARCHY_1) {
+ case HIERARCHY_2: value |= 2; break;
+ case HIERARCHY_4: value |= 4; break;
+ default:
+ case HIERARCHY_1: value |= 1; break;
+ }
+ dib3000mc_write_word(state, 0, value);