[PATCH 04/31] opp: Add devres wrapper for dev_pm_opp_of_add_table

Yangtao Li
2021-01-01T16:57:30Z

Add devres wrapper for dev_pm_opp_of_add_table() to simplify driver
code.

Signed-off-by: Yangtao Li <tiny.windzz@gmail.com>
---
drivers/opp/of.c | 36 ++++++++++++++++++++++++++++++++++++
include/linux/pm_opp.h | 6 ++++++
2 files changed, 42 insertions(+)

diff --git a/drivers/opp/of.c b/drivers/opp/of.c
index 03cb387236c4..50df483c7dc3 100644
--- a/drivers/opp/of.c
+++ b/drivers/opp/of.c
@@ -998,6 +998,42 @@ int dev_pm_opp_of_add_table(struct device *dev)
}
EXPORT_SYMBOL_GPL(dev_pm_opp_of_add_table);

+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_indexed() - Initialize indexed 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
index e5260fc82ba1..e8bdac5f9555 100644
--- a/include/linux/pm_opp.h
+++ b/include/linux/pm_opp.h
@@ -398,6 +398,7 @@ static inline void dev_pm_opp_cpumask_remove_table(const struct cpumask *cpumask
int dev_pm_opp_of_add_table(struct device *dev);
int dev_pm_opp_of_add_table_indexed(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);
@@ -425,6 +426,11 @@ 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 -ENOTSUPP;
+}
+
static inline int dev_pm_opp_of_cpumask_add_table(const struct cpumask *cpumask)
{
return -ENOTSUPP;
--
2.25.1