OPP: Pass index to _of_init_opp_table()

This is a preparatory patch required for the next commit which will
start using OPP table's node pointer in _of_init_opp_table(), which
requires the index in order to read the OPP table's phandle.

This commit adds the index argument in the call chains in order to get
it delivered to _of_init_opp_table().

Tested-by: Niklas Cassel <niklas.cassel@linaro.org>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

drivers/opp/core.c

@@ -785,7 +785,7 @@ struct opp_device *_add_opp_dev(const struct device *dev,
 	return opp_dev;
 }
 
-static struct opp_table *_allocate_opp_table(struct device *dev)
+static struct opp_table *_allocate_opp_table(struct device *dev, int index)
 {
 	struct opp_table *opp_table;
 	struct opp_device *opp_dev;
@@ -808,7 +808,7 @@ static struct opp_table *_allocate_opp_table(struct device *dev)
 		return NULL;
 	}
 
-	_of_init_opp_table(opp_table, dev);
+	_of_init_opp_table(opp_table, dev, index);
 
 	/* Find clk for the device */
 	opp_table->clk = clk_get(dev, NULL);
@@ -833,7 +833,7 @@ void _get_opp_table_kref(struct opp_table *opp_table)
 	kref_get(&opp_table->kref);
 }
 
-struct opp_table *dev_pm_opp_get_opp_table(struct device *dev)
+static struct opp_table *_opp_get_opp_table(struct device *dev, int index)
 {
 	struct opp_table *opp_table;
 
@@ -844,15 +844,26 @@ struct opp_table *dev_pm_opp_get_opp_table(struct device *dev)
 	if (!IS_ERR(opp_table))
 		goto unlock;
 
-	opp_table = _allocate_opp_table(dev);
+	opp_table = _allocate_opp_table(dev, index);
 
 unlock:
 	mutex_unlock(&opp_table_lock);
 
 	return opp_table;
 }
+
+struct opp_table *dev_pm_opp_get_opp_table(struct device *dev)
+{
+	return _opp_get_opp_table(dev, 0);
+}
 EXPORT_SYMBOL_GPL(dev_pm_opp_get_opp_table);
 
+struct opp_table *dev_pm_opp_get_opp_table_indexed(struct device *dev,
+						   int index)
+{
+	return _opp_get_opp_table(dev, index);
+}
+
 static void _opp_table_kref_release(struct kref *kref)
 {
 	struct opp_table *opp_table = container_of(kref, struct opp_table, kref);

drivers/opp/of.c

@@ -52,7 +52,8 @@ static struct opp_table *_managed_opp(const struct device_node *np)
 	return managed_table;
 }
 
-void _of_init_opp_table(struct opp_table *opp_table, struct device *dev)
+void _of_init_opp_table(struct opp_table *opp_table, struct device *dev,
+			int index)
 {
 	struct device_node *np;
 
@@ -378,7 +379,8 @@ free_opp:
 }
 
 /* Initializes OPP tables based on new bindings */
-static int _of_add_opp_table_v2(struct device *dev, struct device_node *opp_np)
+static int _of_add_opp_table_v2(struct device *dev, struct device_node *opp_np,
+				int index)
 {
 	struct device_node *np;
 	struct opp_table *opp_table;
@@ -393,7 +395,7 @@ static int _of_add_opp_table_v2(struct device *dev, struct device_node *opp_np)
 		goto put_opp_table;
 	}
 
-	opp_table = dev_pm_opp_get_opp_table(dev);
+	opp_table = dev_pm_opp_get_opp_table_indexed(dev, index);
 	if (!opp_table)
 		return -ENOMEM;
 
@@ -526,7 +528,7 @@ int dev_pm_opp_of_add_table(struct device *dev)
 		return _of_add_opp_table_v1(dev);
 	}
 
-	ret = _of_add_opp_table_v2(dev, opp_np);
+	ret = _of_add_opp_table_v2(dev, opp_np, 0);
 	of_node_put(opp_np);
 
 	return ret;
@@ -574,7 +576,7 @@ again:
 		return -ENODEV;
 	}
 
-	ret = _of_add_opp_table_v2(dev, opp_np);
+	ret = _of_add_opp_table_v2(dev, opp_np, index);
 	of_node_put(opp_np);
 
 	return ret;

drivers/opp/opp.h

@@ -200,9 +200,9 @@ void _dev_pm_opp_cpumask_remove_table(const struct cpumask *cpumask, bool of, in
 struct opp_table *_add_opp_table(struct device *dev);
 
 #ifdef CONFIG_OF
-void _of_init_opp_table(struct opp_table *opp_table, struct device *dev);
+void _of_init_opp_table(struct opp_table *opp_table, struct device *dev, int index);
 #else
-static inline void _of_init_opp_table(struct opp_table *opp_table, struct device *dev) {}
+static inline void _of_init_opp_table(struct opp_table *opp_table, struct device *dev, int index) {}
 #endif
 
 #ifdef CONFIG_DEBUG_FS

include/linux/pm_opp.h

@@ -79,6 +79,7 @@ struct dev_pm_set_opp_data {
 #if defined(CONFIG_PM_OPP)
 
 struct opp_table *dev_pm_opp_get_opp_table(struct device *dev);
+struct opp_table *dev_pm_opp_get_opp_table_indexed(struct device *dev, int index);
 void dev_pm_opp_put_opp_table(struct opp_table *opp_table);
 
 unsigned long dev_pm_opp_get_voltage(struct dev_pm_opp *opp);
@@ -136,6 +137,11 @@ static inline struct opp_table *dev_pm_opp_get_opp_table(struct device *dev)
 	return ERR_PTR(-ENOTSUPP);
 }
 
+static inline struct opp_table *dev_pm_opp_get_opp_table_indexed(struct device *dev, int index)
+{
+	return ERR_PTR(-ENOTSUPP);
+}
+
 static inline void dev_pm_opp_put_opp_table(struct opp_table *opp_table) {}
 
 static inline unsigned long dev_pm_opp_get_voltage(struct dev_pm_opp *opp)