opp: Add devres wrapper for dev_pm_opp_of_add_table

Add devres wrapper for dev_pm_opp_of_add_table() to simplify drivers code. Signed-off-by: Yangtao Li <[email protected]> Signed-off-by: Dmitry Osipenko <[email protected]> Signed-off-by: Viresh Kumar <[email protected]>
tobetter · Mar 15, 2021 · 3d5cfbb · 3d5cfbb
1 parent 9c4f220
commit 3d5cfbb
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Showing 2 changed files with 42 additions and 0 deletions.
diff --git a/drivers/opp/of.c b/drivers/opp/of.c
@@ -1104,6 +1104,42 @@ static int _of_add_table_indexed(struct device *dev, int index, bool getclk)
 	return ret;
 }
 
+static void devm_pm_opp_of_table_release(void *data)
+{
+	dev_pm_opp_of_remove_table(data);
+}
+
+/**
+ * devm_pm_opp_of_add_table() - Initialize opp table from device tree
+ * @dev:	device pointer used to lookup OPP table.
+ *
+ * Register the initial OPP table with the OPP library for given device.
+ *
+ * The opp_table structure will be freed after the device is destroyed.
+ *
+ * Return:
+ * 0		On success OR
+ *		Duplicate OPPs (both freq and volt are same) and opp->available
+ * -EEXIST	Freq are same and volt are different OR
+ *		Duplicate OPPs (both freq and volt are same) and !opp->available
+ * -ENOMEM	Memory allocation failure
+ * -ENODEV	when 'operating-points' property is not found or is invalid data
+ *		in device node.
+ * -ENODATA	when empty 'operating-points' property is found
+ * -EINVAL	when invalid entries are found in opp-v2 table
+ */
+int devm_pm_opp_of_add_table(struct device *dev)
+{
+	int ret;
+
+	ret = dev_pm_opp_of_add_table(dev);
+	if (ret)
+		return ret;
+
+	return devm_add_action_or_reset(dev, devm_pm_opp_of_table_release, dev);
+}
+EXPORT_SYMBOL_GPL(devm_pm_opp_of_add_table);
+
 /**
  * dev_pm_opp_of_add_table() - Initialize opp table from device tree
  * @dev:	device pointer used to lookup OPP table.

diff --git a/include/linux/pm_opp.h b/include/linux/pm_opp.h
@@ -441,6 +441,7 @@ int dev_pm_opp_of_add_table(struct device *dev);
 int dev_pm_opp_of_add_table_indexed(struct device *dev, int index);
 int dev_pm_opp_of_add_table_noclk(struct device *dev, int index);
 void dev_pm_opp_of_remove_table(struct device *dev);
+int devm_pm_opp_of_add_table(struct device *dev);
 int dev_pm_opp_of_cpumask_add_table(const struct cpumask *cpumask);
 void dev_pm_opp_of_cpumask_remove_table(const struct cpumask *cpumask);
 int dev_pm_opp_of_get_sharing_cpus(struct device *cpu_dev, struct cpumask *cpumask);
@@ -473,6 +474,11 @@ static inline void dev_pm_opp_of_remove_table(struct device *dev)
 {
 }
 
+static inline int devm_pm_opp_of_add_table(struct device *dev)
+{
+	return -EOPNOTSUPP;
+}
+
 static inline int dev_pm_opp_of_cpumask_add_table(const struct cpumask *cpumask)
 {
 	return -EOPNOTSUPP;