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-rw-r--r--include/linux/clk.h33
1 files changed, 33 insertions, 0 deletions
diff --git a/include/linux/clk.h b/include/linux/clk.h
index 0dbd0885b2c2..4f750c481b82 100644
--- a/include/linux/clk.h
+++ b/include/linux/clk.h
@@ -142,6 +142,27 @@ int clk_set_phase(struct clk *clk, int degrees);
int clk_get_phase(struct clk *clk);
/**
+ * clk_set_duty_cycle - adjust the duty cycle ratio of a clock signal
+ * @clk: clock signal source
+ * @num: numerator of the duty cycle ratio to be applied
+ * @den: denominator of the duty cycle ratio to be applied
+ *
+ * Adjust the duty cycle of a clock signal by the specified ratio. Returns 0 on
+ * success, -EERROR otherwise.
+ */
+int clk_set_duty_cycle(struct clk *clk, unsigned int num, unsigned int den);
+
+/**
+ * clk_get_duty_cycle - return the duty cycle ratio of a clock signal
+ * @clk: clock signal source
+ * @scale: scaling factor to be applied to represent the ratio as an integer
+ *
+ * Returns the duty cycle ratio multiplied by the scale provided, otherwise
+ * returns -EERROR.
+ */
+int clk_get_scaled_duty_cycle(struct clk *clk, unsigned int scale);
+
+/**
* clk_is_match - check if two clk's point to the same hardware clock
* @p: clk compared against q
* @q: clk compared against p
@@ -183,6 +204,18 @@ static inline long clk_get_phase(struct clk *clk)
return -ENOTSUPP;
}
+static inline int clk_set_duty_cycle(struct clk *clk, unsigned int num,
+ unsigned int den)
+{
+ return -ENOTSUPP;
+}
+
+static inline unsigned int clk_get_scaled_duty_cycle(struct clk *clk,
+ unsigned int scale)
+{
+ return 0;
+}
+
static inline bool clk_is_match(const struct clk *p, const struct clk *q)
{
return p == q;