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path: root/drivers/clk/sunxi-ng/ccu_nkmp.c
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Diffstat (limited to 'drivers/clk/sunxi-ng/ccu_nkmp.c')
-rw-r--r--drivers/clk/sunxi-ng/ccu_nkmp.c32
1 files changed, 17 insertions, 15 deletions
diff --git a/drivers/clk/sunxi-ng/ccu_nkmp.c b/drivers/clk/sunxi-ng/ccu_nkmp.c
index bda87b38c45c..25efb5b37607 100644
--- a/drivers/clk/sunxi-ng/ccu_nkmp.c
+++ b/drivers/clk/sunxi-ng/ccu_nkmp.c
@@ -29,8 +29,8 @@ static unsigned long ccu_nkmp_calc_rate(unsigned long parent,
return rate;
}
-static void ccu_nkmp_find_best(unsigned long parent, unsigned long rate,
- struct _ccu_nkmp *nkmp)
+static unsigned long ccu_nkmp_find_best(unsigned long parent, unsigned long rate,
+ struct _ccu_nkmp *nkmp)
{
unsigned long best_rate = 0;
unsigned long best_n = 0, best_k = 0, best_m = 0, best_p = 0;
@@ -65,6 +65,8 @@ static void ccu_nkmp_find_best(unsigned long parent, unsigned long rate,
nkmp->k = best_k;
nkmp->m = best_m;
nkmp->p = best_p;
+
+ return best_rate;
}
static void ccu_nkmp_disable(struct clk_hw *hw)
@@ -125,20 +127,20 @@ static unsigned long ccu_nkmp_recalc_rate(struct clk_hw *hw,
return rate;
}
-static long ccu_nkmp_round_rate(struct clk_hw *hw, unsigned long rate,
- unsigned long *parent_rate)
+static int ccu_nkmp_determine_rate(struct clk_hw *hw,
+ struct clk_rate_request *req)
{
struct ccu_nkmp *nkmp = hw_to_ccu_nkmp(hw);
struct _ccu_nkmp _nkmp;
if (nkmp->common.features & CCU_FEATURE_FIXED_POSTDIV)
- rate *= nkmp->fixed_post_div;
+ req->rate *= nkmp->fixed_post_div;
- if (nkmp->max_rate && rate > nkmp->max_rate) {
- rate = nkmp->max_rate;
+ if (nkmp->max_rate && req->rate > nkmp->max_rate) {
+ req->rate = nkmp->max_rate;
if (nkmp->common.features & CCU_FEATURE_FIXED_POSTDIV)
- rate /= nkmp->fixed_post_div;
- return rate;
+ req->rate /= nkmp->fixed_post_div;
+ return 0;
}
_nkmp.min_n = nkmp->n.min ?: 1;
@@ -150,14 +152,13 @@ static long ccu_nkmp_round_rate(struct clk_hw *hw, unsigned long rate,
_nkmp.min_p = 1;
_nkmp.max_p = nkmp->p.max ?: 1 << ((1 << nkmp->p.width) - 1);
- ccu_nkmp_find_best(*parent_rate, rate, &_nkmp);
+ req->rate = ccu_nkmp_find_best(req->best_parent_rate, req->rate,
+ &_nkmp);
- rate = ccu_nkmp_calc_rate(*parent_rate, _nkmp.n, _nkmp.k,
- _nkmp.m, _nkmp.p);
if (nkmp->common.features & CCU_FEATURE_FIXED_POSTDIV)
- rate = rate / nkmp->fixed_post_div;
+ req->rate = req->rate / nkmp->fixed_post_div;
- return rate;
+ return 0;
}
static int ccu_nkmp_set_rate(struct clk_hw *hw, unsigned long rate,
@@ -227,6 +228,7 @@ const struct clk_ops ccu_nkmp_ops = {
.is_enabled = ccu_nkmp_is_enabled,
.recalc_rate = ccu_nkmp_recalc_rate,
- .round_rate = ccu_nkmp_round_rate,
+ .determine_rate = ccu_nkmp_determine_rate,
.set_rate = ccu_nkmp_set_rate,
};
+EXPORT_SYMBOL_NS_GPL(ccu_nkmp_ops, "SUNXI_CCU");