[PATCH v3 01/15] opp: Add devres wrapper for dev_pm_opp_set_clkname

[Dmitry Osipenko]

From: Yangtao Li <tiny.win...@gmail.com>

Add devres wrapper for dev_pm_opp_set_clkname() to simplify drivers code.

Signed-off-by: Yangtao Li <tiny.win...@gmail.com>
Signed-off-by: Dmitry Osipenko <dig...@gmail.com>
---
 drivers/opp/core.c     | 27 +++++++++++++++++++++++++++
 include/linux/pm_opp.h |  6 ++++++
 2 files changed, 33 insertions(+)

diff --git a/drivers/opp/core.c b/drivers/opp/core.c
index 150be4c28c99..02e46508a3a2 100644
--- a/drivers/opp/core.c
+++ b/drivers/opp/core.c
@@ -2119,6 +2119,33 @@ void dev_pm_opp_put_clkname(struct opp_table *opp_table)
 }
 EXPORT_SYMBOL_GPL(dev_pm_opp_put_clkname);
 
+static void devm_pm_opp_clkname_release(void *data)
+{
+       dev_pm_opp_put_clkname(data);
+}
+
+/**
+ * devm_pm_opp_set_clkname() - Set clk name for the device
+ * @dev: Device for which clk name is being set.
+ * @name: Clk name.
+ *
+ * This is a resource-managed variant of dev_pm_opp_set_clkname().
+ *
+ * Return: 0 on success and errorno otherwise.
+ */
+int devm_pm_opp_set_clkname(struct device *dev, const char *name)
+{
+       struct opp_table *opp_table;
+
+       opp_table = dev_pm_opp_set_clkname(dev, name);
+       if (IS_ERR(opp_table))
+               return PTR_ERR(opp_table);
+
+       return devm_add_action_or_reset(dev, devm_pm_opp_clkname_release,
+                                       opp_table);
+}
+EXPORT_SYMBOL_GPL(devm_pm_opp_set_clkname);
+
 /**
  * dev_pm_opp_register_set_opp_helper() - Register custom set OPP helper
  * @dev: Device for which the helper is getting registered.
diff --git a/include/linux/pm_opp.h b/include/linux/pm_opp.h
index c0371efa4a0f..0583d775aa5a 100644
--- a/include/linux/pm_opp.h
+++ b/include/linux/pm_opp.h
@@ -150,6 +150,7 @@ struct opp_table *dev_pm_opp_set_regulators(struct device 
*dev, const char * con
 void dev_pm_opp_put_regulators(struct opp_table *opp_table);
 struct opp_table *dev_pm_opp_set_clkname(struct device *dev, const char *name);
 void dev_pm_opp_put_clkname(struct opp_table *opp_table);
+int devm_pm_opp_set_clkname(struct device *dev, const char *name);
 struct opp_table *dev_pm_opp_register_set_opp_helper(struct device *dev, int 
(*set_opp)(struct dev_pm_set_opp_data *data));
 void dev_pm_opp_unregister_set_opp_helper(struct opp_table *opp_table);
 struct opp_table *devm_pm_opp_register_set_opp_helper(struct device *dev, int 
(*set_opp)(struct dev_pm_set_opp_data *data));
@@ -355,6 +356,11 @@ static inline struct opp_table 
*dev_pm_opp_set_clkname(struct device *dev, const
 
 static inline void dev_pm_opp_put_clkname(struct opp_table *opp_table) {}
 
+static inline int devm_pm_opp_set_clkname(struct device *dev, const char *name)
+{
+       return -EOPNOTSUPP;
+}
+
 static inline struct opp_table *dev_pm_opp_attach_genpd(struct device *dev, 
const char **names, struct device ***virt_devs)
 {
        return ERR_PTR(-EOPNOTSUPP);
-- 
2.30.2