linux-kernel - [PATCH 1/9] phy: core: Change the way of_phy

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Date:	Thu, 05 Dec 2013 13:29:31 +0100
From:	Kamil Debski <k.debski@...sung.com>
To:	linux-kernel@...r.kernel.org, linux-samsung-soc@...r.kernel.org,
	linux-usb@...r.kernel.org, devicetree@...r.kernel.org
Cc:	kyungmin.park@...sung.com, kishon@...com, t.figa@...sung.com,
	s.nawrocki@...sung.com, m.szyprowski@...sung.com,
	gautam.vivek@...sung.com, mat.krawczuk@...il.com,
	yulgon.kim@...sung.com, p.paneri@...sung.com,
	av.tikhomirov@...sung.com, jg1.han@...sung.com,
	galak@...eaurora.org, matt.porter@...aro.org,
	Kamil Debski <k.debski@...sung.com>
Subject: [PATCH 1/9] phy: core: Change the way of_phy_get is called

Previously the of_phy_get function took a struct device * and
was declared static. It was impossible to call it from
another driver and thus it was impossible to get phy defined
for a given node.

Signed-off-by: Kamil Debski <k.debski@...sung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@...sung.com>
---
 drivers/phy/phy-core.c  |   12 +++++-------
 include/linux/phy/phy.h |    1 +
 2 files changed, 6 insertions(+), 7 deletions(-)

diff --git a/drivers/phy/phy-core.c b/drivers/phy/phy-core.c
index 03cf8fb..7fb3474 100644
--- a/drivers/phy/phy-core.c
+++ b/drivers/phy/phy-core.c
@@ -250,20 +250,17 @@ EXPORT_SYMBOL_GPL(phy_power_off);
  * not yet loaded. This function uses of_xlate call back function provided
  * while registering the phy_provider to find the phy instance.
  */
-static struct phy *of_phy_get(struct device *dev, int index)
+struct phy *of_phy_get(struct device_node *np, int index)
 {
 	int ret;
 	struct phy_provider *phy_provider;
 	struct phy *phy = NULL;
 	struct of_phandle_args args;
 
-	ret = of_parse_phandle_with_args(dev->of_node, "phys", "#phy-cells",
+	ret = of_parse_phandle_with_args(np, "phys", "#phy-cells",
 		index, &args);
-	if (ret) {
-		dev_dbg(dev, "failed to get phy in %s node\n",
-			dev->of_node->full_name);
+	if (ret)
 		return ERR_PTR(-ENODEV);
-	}
 
 	mutex_lock(&phy_provider_mutex);
 	phy_provider = of_phy_provider_lookup(args.np);
@@ -281,6 +278,7 @@ err0:
 
 	return phy;
 }
+EXPORT_SYMBOL_GPL(of_phy_get);
 
 /**
  * phy_put() - release the PHY
@@ -370,7 +368,7 @@ struct phy *phy_get(struct device *dev, const char *string)
 	if (dev->of_node) {
 		index = of_property_match_string(dev->of_node, "phy-names",
 			string);
-		phy = of_phy_get(dev, index);
+		phy = of_phy_get(dev->of_node, index);
 		if (IS_ERR(phy)) {
 			dev_err(dev, "unable to find phy\n");
 			return phy;
diff --git a/include/linux/phy/phy.h b/include/linux/phy/phy.h
index 6d72269..169f572 100644
--- a/include/linux/phy/phy.h
+++ b/include/linux/phy/phy.h
@@ -131,6 +131,7 @@ struct phy *phy_get(struct device *dev, const char *string);
 struct phy *devm_phy_get(struct device *dev, const char *string);
 void phy_put(struct phy *phy);
 void devm_phy_put(struct device *dev, struct phy *phy);
+struct phy *of_phy_get(struct device_node *np, int index);
 struct phy *of_phy_simple_xlate(struct device *dev,
 	struct of_phandle_args *args);
 struct phy *phy_create(struct device *dev, const struct phy_ops *ops,
-- 
1.7.9.5

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