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Merge branch 'clk-devm-provider' into clk-next

* clk-devm-provider:
  clk: qcom: common: Migrate to devm_* APIs for resets and clk providers
  clk: Add devm_of_clk_add_hw_provider()/del_provider() APIs
Stephen Boyd 7 years ago
parent
commit
2dd850ef6e
4 changed files with 68 additions and 24 deletions
  1. 1 0
      Documentation/driver-model/devres.txt
  2. 52 0
      drivers/clk/clk.c
  3. 2 24
      drivers/clk/qcom/common.c
  4. 13 0
      include/linux/clk-provider.h

+ 1 - 0
Documentation/driver-model/devres.txt

@@ -237,6 +237,7 @@ CLOCK
   devm_clk_get()
   devm_clk_put()
   devm_clk_hw_register()
+  devm_of_clk_add_hw_provider()
 
 DMA
   dmam_alloc_coherent()

+ 52 - 0
drivers/clk/clk.c

@@ -3275,6 +3275,37 @@ int of_clk_add_hw_provider(struct device_node *np,
 }
 EXPORT_SYMBOL_GPL(of_clk_add_hw_provider);
 
+static void devm_of_clk_release_provider(struct device *dev, void *res)
+{
+	of_clk_del_provider(*(struct device_node **)res);
+}
+
+int devm_of_clk_add_hw_provider(struct device *dev,
+			struct clk_hw *(*get)(struct of_phandle_args *clkspec,
+					      void *data),
+			void *data)
+{
+	struct device_node **ptr, *np;
+	int ret;
+
+	ptr = devres_alloc(devm_of_clk_release_provider, sizeof(*ptr),
+			   GFP_KERNEL);
+	if (!ptr)
+		return -ENOMEM;
+
+	np = dev->of_node;
+	ret = of_clk_add_hw_provider(np, get, data);
+	if (!ret) {
+		*ptr = np;
+		devres_add(dev, ptr);
+	} else {
+		devres_free(ptr);
+	}
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(devm_of_clk_add_hw_provider);
+
 /**
  * of_clk_del_provider() - Remove a previously registered clock provider
  * @np: Device node pointer associated with clock provider
@@ -3296,6 +3327,27 @@ void of_clk_del_provider(struct device_node *np)
 }
 EXPORT_SYMBOL_GPL(of_clk_del_provider);
 
+static int devm_clk_provider_match(struct device *dev, void *res, void *data)
+{
+	struct device_node **np = res;
+
+	if (WARN_ON(!np || !*np))
+		return 0;
+
+	return *np == data;
+}
+
+void devm_of_clk_del_provider(struct device *dev)
+{
+	int ret;
+
+	ret = devres_release(dev, devm_of_clk_release_provider,
+			     devm_clk_provider_match, dev->of_node);
+
+	WARN_ON(ret);
+}
+EXPORT_SYMBOL(devm_of_clk_del_provider);
+
 static struct clk_hw *
 __of_clk_get_hw_from_provider(struct of_clk_provider *provider,
 			      struct of_phandle_args *clkspec)

+ 2 - 24
drivers/clk/qcom/common.c

@@ -111,16 +111,6 @@ qcom_pll_set_fsm_mode(struct regmap *map, u32 reg, u8 bias_count, u8 lock_count)
 }
 EXPORT_SYMBOL_GPL(qcom_pll_set_fsm_mode);
 
-static void qcom_cc_del_clk_provider(void *data)
-{
-	of_clk_del_provider(data);
-}
-
-static void qcom_cc_reset_unregister(void *data)
-{
-	reset_controller_unregister(data);
-}
-
 static void qcom_cc_gdsc_unregister(void *data)
 {
 	gdsc_unregister(data);
@@ -248,13 +238,7 @@ int qcom_cc_really_probe(struct platform_device *pdev,
 			return ret;
 	}
 
-	ret = of_clk_add_hw_provider(dev->of_node, qcom_cc_clk_hw_get, cc);
-	if (ret)
-		return ret;
-
-	ret = devm_add_action_or_reset(dev, qcom_cc_del_clk_provider,
-				       pdev->dev.of_node);
-
+	ret = devm_of_clk_add_hw_provider(dev, qcom_cc_clk_hw_get, cc);
 	if (ret)
 		return ret;
 
@@ -266,13 +250,7 @@ int qcom_cc_really_probe(struct platform_device *pdev,
 	reset->regmap = regmap;
 	reset->reset_map = desc->resets;
 
-	ret = reset_controller_register(&reset->rcdev);
-	if (ret)
-		return ret;
-
-	ret = devm_add_action_or_reset(dev, qcom_cc_reset_unregister,
-				       &reset->rcdev);
-
+	ret = devm_reset_controller_register(dev, &reset->rcdev);
 	if (ret)
 		return ret;
 

+ 13 - 0
include/linux/clk-provider.h

@@ -815,7 +815,12 @@ int of_clk_add_hw_provider(struct device_node *np,
 			   struct clk_hw *(*get)(struct of_phandle_args *clkspec,
 						 void *data),
 			   void *data);
+int devm_of_clk_add_hw_provider(struct device *dev,
+			   struct clk_hw *(*get)(struct of_phandle_args *clkspec,
+						 void *data),
+			   void *data);
 void of_clk_del_provider(struct device_node *np);
+void devm_of_clk_del_provider(struct device *dev);
 struct clk *of_clk_src_simple_get(struct of_phandle_args *clkspec,
 				  void *data);
 struct clk_hw *of_clk_hw_simple_get(struct of_phandle_args *clkspec,
@@ -847,7 +852,15 @@ static inline int of_clk_add_hw_provider(struct device_node *np,
 {
 	return 0;
 }
+static inline int devm_of_clk_add_hw_provider(struct device *dev,
+			   struct clk_hw *(*get)(struct of_phandle_args *clkspec,
+						 void *data),
+			   void *data)
+{
+	return 0;
+}
 static inline void of_clk_del_provider(struct device_node *np) {}
+static inline void devm_of_clk_del_provider(struct device *dev) {}
 static inline struct clk *of_clk_src_simple_get(
 	struct of_phandle_args *clkspec, void *data)
 {