WX_NS_PER_SEC
div_u64_rem(ns, WX_NS_PER_SEC, &rem);
rem = (WX_NS_PER_SEC - rem);
if (wx->pps_width >= WX_NS_PER_SEC) {
wx->sec_to_cc = div_u64(((u64)WX_NS_PER_SEC << cc->shift), cc->mult);