[cip-dev] [PATCH 4.4.y-cip 02/11] PM / OPP: Expose _of_get_opp_desc_node as dev_pm_opp API

["Chen-Yu Tsai (Moxa)" <wens@csie.org>]

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From: Dave Gerlach <d-gerlach@ti.com>

commit 0764c604c8128f17fd740ff8b1701d0a1301eb7e upstream.

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>
[wens@csie.org: backported to pre-OF-move files]
Signed-off-by: Chen-Yu Tsai (Moxa) <wens@csie.org>
---
 drivers/base/power/opp/core.c | 5 +++--
 drivers/base/power/opp/cpu.c  | 4 ++--
 include/linux/pm_opp.h        | 6 ++++++
 3 files changed, 11 insertions(+), 4 deletions(-)

diff --git a/drivers/base/power/opp/core.c b/drivers/base/power/opp/core.c
index f983d5d30fa94..c41bf5f1a038d 100644
--- a/drivers/base/power/opp/core.c
+++ b/drivers/base/power/opp/core.c
@@ -1488,7 +1488,7 @@ unlock:
 EXPORT_SYMBOL_GPL(dev_pm_opp_of_remove_table);
 
 /* Returns opp descriptor node for a device, caller must do of_node_put() */
-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)
 {
 	/*
 	 * TODO: Support for multiple OPP tables.
@@ -1499,6 +1499,7 @@ 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);
 
 /* Initializes OPP tables based on new bindings */
 static int _of_add_opp_table_v2(struct device *dev, struct device_node *opp_np)
@@ -1627,7 +1628,7 @@ 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
diff --git a/drivers/base/power/opp/cpu.c b/drivers/base/power/opp/cpu.c
index a0db8b3575f38..29c5b42eff346 100644
--- a/drivers/base/power/opp/cpu.c
+++ b/drivers/base/power/opp/cpu.c
@@ -227,7 +227,7 @@ int dev_pm_opp_of_get_sharing_cpus(struct device *cpu_dev, cpumask_var_t cpumask
 	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 cpu_dev node.\n", __func__);
 		return -ENOENT;
@@ -252,7 +252,7 @@ int dev_pm_opp_of_get_sharing_cpus(struct device *cpu_dev, cpumask_var_t cpumask
 		}
 
 		/* 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 tcpu_dev node.\n",
 				__func__);
diff --git a/include/linux/pm_opp.h b/include/linux/pm_opp.h
index 95403d2ccaf56..4a8f5b33d7023 100644
--- a/include/linux/pm_opp.h
+++ b/include/linux/pm_opp.h
@@ -160,6 +160,7 @@ int dev_pm_opp_of_cpumask_add_table(cpumask_var_t cpumask);
 void dev_pm_opp_of_cpumask_remove_table(cpumask_var_t cpumask);
 int dev_pm_opp_of_get_sharing_cpus(struct device *cpu_dev, cpumask_var_t cpumask);
 int dev_pm_opp_set_sharing_cpus(struct device *cpu_dev, cpumask_var_t 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)
 {
@@ -188,6 +189,11 @@ static inline int dev_pm_opp_set_sharing_cpus(struct device *cpu_dev, cpumask_va
 {
 	return -ENOSYS;
 }
+
+static inline struct device_node *dev_pm_opp_of_get_opp_desc_node(struct device *dev)
+{
+	return NULL;
+}
 #endif
 
 #endif		/* __LINUX_OPP_H__ */
-- 
2.28.0


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