1 files changed, 35 insertions, 3 deletions

diff --git a/include/linux/clk.h b/include/linux/clk.h
index b0252726df61..ad5c43e8ae8a 100644
--- a/include/linux/clk.h
+++ b/include/linux/clk.h
@@ -81,7 +81,7 @@ int clk_notifier_register(struct clk *clk, struct notifier_block *nb);
 
 int clk_notifier_unregister(struct clk *clk, struct notifier_block *nb);
 
-#endif /* !CONFIG_COMMON_CLK */
+#endif
 
 /**
  * clk_get - lookup and obtain a reference to a clock producer.
@@ -101,6 +101,26 @@ int clk_notifier_unregister(struct clk *clk, struct notifier_block *nb);
 struct clk *clk_get(struct device *dev, const char *id);
 
 /**
+ * devm_clk_get - lookup and obtain a managed reference to a clock producer.
+ * @dev: device for clock "consumer"
+ * @id: clock comsumer ID
+ *
+ * Returns a struct clk corresponding to the clock producer, or
+ * valid IS_ERR() condition containing errno.  The implementation
+ * uses @dev and @id to determine the clock consumer, and thereby
+ * the clock producer.  (IOW, @id may be identical strings, but
+ * clk_get may return different clock producers depending on @dev.)
+ *
+ * Drivers must assume that the clock source is not enabled.
+ *
+ * devm_clk_get should not be called from within interrupt context.
+ *
+ * The clock will automatically be freed when the device is unbound
+ * from the bus.
+ */
+struct clk *devm_clk_get(struct device *dev, const char *id);
+
+/**
  * clk_prepare - prepare a clock source
  * @clk: clock source
  *
@@ -206,6 +226,18 @@ unsigned long clk_get_rate(struct clk *clk);
  */
 void clk_put(struct clk *clk);
 
+/**
+ * devm_clk_put - "free" a managed clock source
+ * @dev: device used to acuqire the clock
+ * @clk: clock source acquired with devm_clk_get()
+ *
+ * Note: drivers must ensure that all clk_enable calls made on this
+ * clock source are balanced by clk_disable calls prior to calling
+ * this function.
+ *
+ * clk_put should not be called from within interrupt context.
+ */
+void devm_clk_put(struct device *dev, struct clk *clk);
 
 /*
  * The remaining APIs are optional for machine class support.
@@ -220,7 +252,7 @@ void clk_put(struct clk *clk);
  * Returns rounded clock rate in Hz, or negative errno.
  */
 long clk_round_rate(struct clk *clk, unsigned long rate);
- 
+
 /**
  * clk_set_rate - set the clock rate for a clock source
  * @clk: clock source
@@ -229,7 +261,7 @@ long clk_round_rate(struct clk *clk, unsigned long rate);
  * Returns success (0) or negative errno.
  */
 int clk_set_rate(struct clk *clk, unsigned long rate);
- 
+
 /**
  * clk_set_parent - set the parent clock source for this clock
  * @clk: clock source