PM / OPP: Expose _of_get_opp_desc_node as dev_pm_opp API

Rename _of_get_opp_desc_node to dev_pm_opp_of_get_opp_desc_node and add it
to include/linux/pm_opp.h to allow other drivers, such as platform OPP
and cpufreq drivers, to make use of it.

Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

diff --git a/drivers/base/power/opp/of.c b/drivers/base/power/opp/of.c
index 083b79f..7794286 100644 (file)
--- a/drivers/base/power/opp/of.c
+++ b/drivers/base/power/opp/of.c
@@ -243,7 +243,7 @@ void dev_pm_opp_of_remove_table(struct device *dev)
 EXPORT_SYMBOL_GPL(dev_pm_opp_of_remove_table);
 
 /* Returns opp descriptor node for a device, caller must do of_node_put() */
-static struct device_node *_of_get_opp_desc_node(struct device *dev)
+struct device_node *dev_pm_opp_of_get_opp_desc_node(struct device *dev)
 {
        /*
         * There should be only ONE phandle present in "operating-points-v2"
@@ -252,6 +252,7 @@ static struct device_node *_of_get_opp_desc_node(struct device *dev)
 
        return of_parse_phandle(dev->of_node, "operating-points-v2", 0);
 }
+EXPORT_SYMBOL_GPL(dev_pm_opp_of_get_opp_desc_node);
 
 /**
  * _opp_add_static_v2() - Allocate static OPPs (As per 'v2' DT bindings)
@@ -478,7 +479,7 @@ int dev_pm_opp_of_add_table(struct device *dev)
         * OPPs have two version of bindings now. The older one is deprecated,
         * try for the new binding first.
         */
-       opp_np = _of_get_opp_desc_node(dev);
+       opp_np = dev_pm_opp_of_get_opp_desc_node(dev);
        if (!opp_np) {
                /*
                 * Try old-deprecated bindings for backward compatibility with
@@ -570,7 +571,7 @@ int dev_pm_opp_of_get_sharing_cpus(struct device *cpu_dev,
        int cpu, ret = 0;
 
        /* Get OPP descriptor node */
-       np = _of_get_opp_desc_node(cpu_dev);
+       np = dev_pm_opp_of_get_opp_desc_node(cpu_dev);
        if (!np) {
                dev_dbg(cpu_dev, "%s: Couldn't find opp node.\n", __func__);
                return -ENOENT;
@@ -595,7 +596,7 @@ int dev_pm_opp_of_get_sharing_cpus(struct device *cpu_dev,
                }
 
                /* Get OPP descriptor node */
-               tmp_np = _of_get_opp_desc_node(tcpu_dev);
+               tmp_np = dev_pm_opp_of_get_opp_desc_node(tcpu_dev);
                if (!tmp_np) {
                        dev_err(tcpu_dev, "%s: Couldn't find opp node.\n",
                                __func__);

diff --git a/include/linux/pm_opp.h b/include/linux/pm_opp.h
index 731d548..a6685b3 100644 (file)
--- a/include/linux/pm_opp.h
+++ b/include/linux/pm_opp.h
@@ -288,6 +288,7 @@ void dev_pm_opp_of_remove_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);
+struct device_node *dev_pm_opp_of_get_opp_desc_node(struct device *dev);
 #else
 static inline int dev_pm_opp_of_add_table(struct device *dev)
 {
@@ -311,6 +312,11 @@ static inline int dev_pm_opp_of_get_sharing_cpus(struct device *cpu_dev, struct
 {
        return -ENOTSUPP;
 }
+
+static inline struct device_node *dev_pm_opp_of_get_opp_desc_node(struct device *dev)
+{
+       return NULL;
+}
 #endif
 
 #endif         /* __LINUX_OPP_H__ */