unsigned long m, min_m, max_m;
};
+static unsigned long ccu_nm_calc_rate(unsigned long parent,
+ unsigned long n, unsigned long m)
+{
+ u64 rate = parent;
+
+ rate *= n;
+ do_div(rate, m);
+
+ return rate;
+}
+
static void ccu_nm_find_best(unsigned long parent, unsigned long rate,
struct _ccu_nm *nm)
{
for (_n = nm->min_n; _n <= nm->max_n; _n++) {
for (_m = nm->min_m; _m <= nm->max_m; _m++) {
- unsigned long tmp_rate = parent * _n / _m;
+ unsigned long tmp_rate = ccu_nm_calc_rate(parent,
+ _n, _m);
if (tmp_rate > rate)
continue;
if (ccu_sdm_helper_is_enabled(&nm->common, &nm->sdm))
rate = ccu_sdm_helper_read_rate(&nm->common, &nm->sdm, m, n);
else
- rate = parent_rate * n / m;
+ rate = ccu_nm_calc_rate(parent_rate, n, m);
if (nm->common.features & CCU_FEATURE_FIXED_POSTDIV)
rate /= nm->fixed_post_div;
_nm.max_m = nm->m.max ?: 1 << nm->m.width;
ccu_nm_find_best(*parent_rate, rate, &_nm);
- rate = *parent_rate * _nm.n / _nm.m;
+ rate = ccu_nm_calc_rate(*parent_rate, _nm.n, _nm.m);
if (nm->common.features & CCU_FEATURE_FIXED_POSTDIV)
rate /= nm->fixed_post_div;