.determine_rate is meant to replace .round_rate. The former comes with a
benefit which is especially relevant on 32-bit systems: since
.determine_rate uses an "unsigned long" (compared to a "signed long"
which is used by .round_rate) the maximum value on 32-bit systems
increases from 2^31 (or approx. 2.14GHz) to 2^32 (or approx. 4.29GHz).
Signed-off-by: Luca Weiss <luca@xxxxxxxxx>
---
drivers/clk/qcom/clk-hfpll.c | 14 +++++++-------
1 file changed, 7 insertions(+), 7 deletions(-)
diff --git a/drivers/clk/qcom/clk-hfpll.c b/drivers/clk/qcom/clk-hfpll.c
index 7dd17c184b69..86f728dc69e5 100644
--- a/drivers/clk/qcom/clk-hfpll.c
+++ b/drivers/clk/qcom/clk-hfpll.c
@@ -128,20 +128,20 @@ static void clk_hfpll_disable(struct clk_hw *hw)
spin_unlock_irqrestore(&h->lock, flags);
}
-static long clk_hfpll_round_rate(struct clk_hw *hw, unsigned long rate,
- unsigned long *parent_rate)
+static int clk_hfpll_determine_rate(struct clk_hw *hw, struct clk_rate_request *req)
{
struct clk_hfpll *h = to_clk_hfpll(hw);
struct hfpll_data const *hd = h->d;
unsigned long rrate;
- rate = clamp(rate, hd->min_rate, hd->max_rate);
+ req->rate = clamp(req->rate, hd->min_rate, hd->max_rate);
- rrate = DIV_ROUND_UP(rate, *parent_rate) * *parent_rate;
+ rrate = DIV_ROUND_UP(req->rate, req->best_parent_rate) * req->best_parent_rate;
if (rrate > hd->max_rate)
- rrate -= *parent_rate;
+ rrate -= req->best_parent_rate;
- return rrate;
+ req->rate = rrate;
+ return 0;
}
/*
@@ -241,7 +241,7 @@ const struct clk_ops clk_ops_hfpll = {
.enable = clk_hfpll_enable,
.disable = clk_hfpll_disable,
.is_enabled = hfpll_is_enabled,
- .round_rate = clk_hfpll_round_rate,
+ .determine_rate = clk_hfpll_determine_rate,
.set_rate = clk_hfpll_set_rate,
.recalc_rate = clk_hfpll_recalc_rate,
.init = clk_hfpll_init,
--
2.39.1
