[PATCH v3 02/15] opp: Add devres wrapper for dev_pm_opp_set_regulators

[Dmitry Osipenko]

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

Add devres wrapper for dev_pm_opp_set_regulators() 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     | 30 ++++++++++++++++++++++++++++++
 include/linux/pm_opp.h |  8 ++++++++
 2 files changed, 38 insertions(+)

diff --git a/drivers/opp/core.c b/drivers/opp/core.c
index 02e46508a3a2..6217af05141f 100644
--- a/drivers/opp/core.c
+++ b/drivers/opp/core.c
@@ -2047,6 +2047,36 @@ void dev_pm_opp_put_regulators(struct opp_table 
*opp_table)
 }
 EXPORT_SYMBOL_GPL(dev_pm_opp_put_regulators);
 
+static void devm_pm_opp_regulators_release(void *data)
+{
+       dev_pm_opp_put_regulators(data);
+}
+
+/**
+ * devm_pm_opp_set_regulators() - Set regulator names for the device
+ * @dev: Device for which regulator name is being set.
+ * @names: Array of pointers to the names of the regulator.
+ * @count: Number of regulators.
+ *
+ * This is a resource-managed variant of dev_pm_opp_set_regulators().
+ *
+ * Return: 0 on success and errorno otherwise.
+ */
+int devm_pm_opp_set_regulators(struct device *dev,
+                              const char * const names[],
+                              unsigned int count)
+{
+       struct opp_table *opp_table;
+
+       opp_table = dev_pm_opp_set_regulators(dev, names, count);
+       if (IS_ERR(opp_table))
+               return PTR_ERR(opp_table);
+
+       return devm_add_action_or_reset(dev, devm_pm_opp_regulators_release,
+                                       opp_table);
+}
+EXPORT_SYMBOL_GPL(devm_pm_opp_set_regulators);
+
 /**
  * dev_pm_opp_set_clkname() - Set clk name for the device
  * @dev: Device for which clk name is being set.
diff --git a/include/linux/pm_opp.h b/include/linux/pm_opp.h
index 0583d775aa5a..3e667af57211 100644
--- a/include/linux/pm_opp.h
+++ b/include/linux/pm_opp.h
@@ -148,6 +148,7 @@ struct opp_table *dev_pm_opp_set_prop_name(struct device 
*dev, const char *name)
 void dev_pm_opp_put_prop_name(struct opp_table *opp_table);
 struct opp_table *dev_pm_opp_set_regulators(struct device *dev, const char * 
const names[], unsigned int count);
 void dev_pm_opp_put_regulators(struct opp_table *opp_table);
+int devm_pm_opp_set_regulators(struct device *dev, const char * const names[], 
unsigned int count);
 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);
@@ -349,6 +350,13 @@ static inline struct opp_table 
*dev_pm_opp_set_regulators(struct device *dev, co
 
 static inline void dev_pm_opp_put_regulators(struct opp_table *opp_table) {}
 
+static inline int devm_pm_opp_set_regulators(struct device *dev,
+                                            const char * const names[],
+                                            unsigned int count)
+{
+       return -EOPNOTSUPP;
+}
+
 static inline struct opp_table *dev_pm_opp_set_clkname(struct device *dev, 
const char *name)
 {
        return ERR_PTR(-EOPNOTSUPP);
-- 
2.30.2