RZN1_DMAMUX_LINES_PER_CTLR
DECLARE_BITMAP(used_chans, 2 * RZN1_DMAMUX_LINES_PER_CTLR);
if (chan >= RZN1_DMAMUX_LINES_PER_CTLR) {
(map->req_idx % RZN1_DMAMUX_LINES_PER_CTLR) != chan) {
dmac_idx = map->req_idx >= RZN1_DMAMUX_LINES_PER_CTLR ? 1 : 0;