diff options
Diffstat (limited to 'drivers/clk/sunxi-ng/ccu_nkm.c')
-rw-r--r-- | drivers/clk/sunxi-ng/ccu_nkm.c | 20 |
1 files changed, 9 insertions, 11 deletions
diff --git a/drivers/clk/sunxi-ng/ccu_nkm.c b/drivers/clk/sunxi-ng/ccu_nkm.c index 2f60f3c33e30..a714dcf0dfc1 100644 --- a/drivers/clk/sunxi-ng/ccu_nkm.c +++ b/drivers/clk/sunxi-ng/ccu_nkm.c @@ -16,7 +16,8 @@ struct _ccu_nkm { unsigned long m, min_m, max_m; }; -static unsigned long ccu_nkm_find_best_with_parent_adj(struct clk_hw *parent_hw, +static unsigned long ccu_nkm_find_best_with_parent_adj(struct ccu_common *common, + struct clk_hw *parent_hw, unsigned long *parent, unsigned long rate, struct _ccu_nkm *nkm) { @@ -32,10 +33,8 @@ static unsigned long ccu_nkm_find_best_with_parent_adj(struct clk_hw *parent_hw, tmp_parent = clk_hw_round_rate(parent_hw, rate * _m / (_n * _k)); tmp_rate = tmp_parent * _n * _k / _m; - if (tmp_rate > rate) - continue; - if ((rate - tmp_rate) < (rate - best_rate)) { + if (ccu_is_better_rate(common, rate, tmp_rate, best_rate)) { best_rate = tmp_rate; best_parent_rate = tmp_parent; best_n = _n; @@ -56,7 +55,7 @@ static unsigned long ccu_nkm_find_best_with_parent_adj(struct clk_hw *parent_hw, } static unsigned long ccu_nkm_find_best(unsigned long parent, unsigned long rate, - struct _ccu_nkm *nkm) + struct _ccu_nkm *nkm, struct ccu_common *common) { unsigned long best_rate = 0; unsigned long best_n = 0, best_k = 0, best_m = 0; @@ -69,9 +68,7 @@ static unsigned long ccu_nkm_find_best(unsigned long parent, unsigned long rate, tmp_rate = parent * _n * _k / _m; - if (tmp_rate > rate) - continue; - if ((rate - tmp_rate) < (rate - best_rate)) { + if (ccu_is_better_rate(common, rate, tmp_rate, best_rate)) { best_rate = tmp_rate; best_n = _n; best_k = _k; @@ -164,9 +161,10 @@ static unsigned long ccu_nkm_round_rate(struct ccu_mux_internal *mux, rate *= nkm->fixed_post_div; if (!clk_hw_can_set_rate_parent(&nkm->common.hw)) - rate = ccu_nkm_find_best(*parent_rate, rate, &_nkm); + rate = ccu_nkm_find_best(*parent_rate, rate, &_nkm, &nkm->common); else - rate = ccu_nkm_find_best_with_parent_adj(parent_hw, parent_rate, rate, &_nkm); + rate = ccu_nkm_find_best_with_parent_adj(&nkm->common, parent_hw, parent_rate, rate, + &_nkm); if (nkm->common.features & CCU_FEATURE_FIXED_POSTDIV) rate /= nkm->fixed_post_div; @@ -201,7 +199,7 @@ static int ccu_nkm_set_rate(struct clk_hw *hw, unsigned long rate, _nkm.min_m = 1; _nkm.max_m = nkm->m.max ?: 1 << nkm->m.width; - ccu_nkm_find_best(parent_rate, rate, &_nkm); + ccu_nkm_find_best(parent_rate, rate, &_nkm, &nkm->common); spin_lock_irqsave(nkm->common.lock, flags); |