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authorJerome Brunet <jbrunet@baylibre.com>2018-04-09 15:59:20 +0200
committerStephen Boyd <sboyd@kernel.org>2018-04-16 09:25:07 -0700
commit4ad69b80e886a845f56ce0a3d10211208693d92b (patch)
tree933b4da9d4ed5ac997d38b6afa88a11c1b568285 /drivers/clk
parenta21b85944c9653f2a3388d0da962c7c70690c30f (diff)
clk: honor CLK_MUX_ROUND_CLOSEST in generic clk mux
CLK_MUX_ROUND_CLOSEST is part of the clk_mux documentation but clk_mux directly calls __clk_mux_determine_rate(), which overrides the flag. As result, if clk_mux is instantiated with CLK_MUX_ROUND_CLOSEST, the flag will be ignored and the clock rounded down. To solve this, this patch expose clk_mux_determine_rate_flags() in the clk-provider API and uses it in the determine_rate() callback of clk_mux. Fixes: 15a02c1f6dd7 ("clk: Add __clk_mux_determine_rate_closest") Signed-off-by: Jerome Brunet <jbrunet@baylibre.com> Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Diffstat (limited to 'drivers/clk')
-rw-r--r--drivers/clk/clk-mux.c10
-rw-r--r--drivers/clk/clk.c7
2 files changed, 13 insertions, 4 deletions
diff --git a/drivers/clk/clk-mux.c b/drivers/clk/clk-mux.c
index ac4a042f8658..1628b93655ed 100644
--- a/drivers/clk/clk-mux.c
+++ b/drivers/clk/clk-mux.c
@@ -112,10 +112,18 @@ static int clk_mux_set_parent(struct clk_hw *hw, u8 index)
return 0;
}
+static int clk_mux_determine_rate(struct clk_hw *hw,
+ struct clk_rate_request *req)
+{
+ struct clk_mux *mux = to_clk_mux(hw);
+
+ return clk_mux_determine_rate_flags(hw, req, mux->flags);
+}
+
const struct clk_ops clk_mux_ops = {
.get_parent = clk_mux_get_parent,
.set_parent = clk_mux_set_parent,
- .determine_rate = __clk_mux_determine_rate,
+ .determine_rate = clk_mux_determine_rate,
};
EXPORT_SYMBOL_GPL(clk_mux_ops);
diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c
index ea67ac81c6f9..7af555f0e60c 100644
--- a/drivers/clk/clk.c
+++ b/drivers/clk/clk.c
@@ -426,9 +426,9 @@ static bool mux_is_better_rate(unsigned long rate, unsigned long now,
return now <= rate && now > best;
}
-static int
-clk_mux_determine_rate_flags(struct clk_hw *hw, struct clk_rate_request *req,
- unsigned long flags)
+int clk_mux_determine_rate_flags(struct clk_hw *hw,
+ struct clk_rate_request *req,
+ unsigned long flags)
{
struct clk_core *core = hw->core, *parent, *best_parent = NULL;
int i, num_parents, ret;
@@ -488,6 +488,7 @@ out:
return 0;
}
+EXPORT_SYMBOL_GPL(clk_mux_determine_rate_flags);
struct clk *__clk_lookup(const char *name)
{