Merge branch 'clk-determine-rate-struct' into clk-next

* clk-determine-rate-struct:
  clk: fix some determine_rate implementations
  clk: change clk_ops' ->determine_rate() prototype

1 files changed, 29 insertions, 20 deletions

diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h
index 823d7f70878e..2116e2b8a5f2 100644
--- a/include/linux/clk-provider.h
+++ b/include/linux/clk-provider.h
@@ -38,6 +38,28 @@ struct clk_core;
 struct dentry;
 
 /**
+ * struct clk_rate_request - Structure encoding the clk constraints that
+ * a clock user might require.
+ *
+ * @rate:		Requested clock rate. This field will be adjusted by
+ *			clock drivers according to hardware capabilities.
+ * @min_rate:		Minimum rate imposed by clk users.
+ * @max_rate:		Maximum rate a imposed by clk users.
+ * @best_parent_rate:	The best parent rate a parent can provide to fulfill the
+ *			requested constraints.
+ * @best_parent_hw:	The most appropriate parent clock that fulfills the
+ *			requested constraints.
+ *
+ */
+struct clk_rate_request {
+	unsigned long rate;
+	unsigned long min_rate;
+	unsigned long max_rate;
+	unsigned long best_parent_rate;
+	struct clk_hw *best_parent_hw;
+};
+
+/**
  * struct clk_ops -  Callback operations for hardware clocks; these are to
  * be provided by the clock implementation, and will be called by drivers
  * through the clk_* api.
@@ -176,12 +198,8 @@ struct clk_ops {
 					unsigned long parent_rate);
 	long		(*round_rate)(struct clk_hw *hw, unsigned long rate,
 					unsigned long *parent_rate);
-	long		(*determine_rate)(struct clk_hw *hw,
-					  unsigned long rate,
-					  unsigned long min_rate,
-					  unsigned long max_rate,
-					  unsigned long *best_parent_rate,
-					  struct clk_hw **best_parent_hw);
+	int		(*determine_rate)(struct clk_hw *hw,
+					  struct clk_rate_request *req);
 	int		(*set_parent)(struct clk_hw *hw, u8 index);
 	u8		(*get_parent)(struct clk_hw *hw);
 	int		(*set_rate)(struct clk_hw *hw, unsigned long rate,
@@ -595,20 +613,11 @@ unsigned long __clk_get_flags(struct clk *clk);
 bool __clk_is_prepared(struct clk *clk);
 bool __clk_is_enabled(struct clk *clk);
 struct clk *__clk_lookup(const char *name);
-long __clk_mux_determine_rate(struct clk_hw *hw, unsigned long rate,
-			      unsigned long min_rate,
-			      unsigned long max_rate,
-			      unsigned long *best_parent_rate,
-			      struct clk_hw **best_parent_p);
-unsigned long __clk_determine_rate(struct clk_hw *core,
-				   unsigned long rate,
-				   unsigned long min_rate,
-				   unsigned long max_rate);
-long __clk_mux_determine_rate_closest(struct clk_hw *hw, unsigned long rate,
-			      unsigned long min_rate,
-			      unsigned long max_rate,
-			      unsigned long *best_parent_rate,
-			      struct clk_hw **best_parent_p);
+int __clk_mux_determine_rate(struct clk_hw *hw,
+			     struct clk_rate_request *req);
+int __clk_determine_rate(struct clk_hw *core, struct clk_rate_request *req);
+int __clk_mux_determine_rate_closest(struct clk_hw *hw,
+				     struct clk_rate_request *req);
 void clk_hw_reparent(struct clk_hw *hw, struct clk_hw *new_parent);
 
 static inline void __clk_hw_set_clk(struct clk_hw *dst, struct clk_hw *src)