extcon: Add extcon_get_edev_name() API to get the extcon device name

This patch adds the extcon_get_edev_name() API to get the name of extcon device
because all information inclued in the structure extcon_dev should be accessed
by extcon core API instead of directly accessing the data.

Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>

diff --git a/drivers/extcon/extcon.c b/drivers/extcon/extcon.c
index 1a932292d6c8bb973c3a2e7667d82fecd7a953e1..c5e9ebf0a91414454bda4c6142f165bde32830f1 100644 (file)
--- a/drivers/extcon/extcon.c
+++ b/drivers/extcon/extcon.c
@@ -1046,6 +1046,15 @@ struct extcon_dev *extcon_get_edev_by_phandle(struct device *dev, int index)
 #endif /* CONFIG_OF */
 EXPORT_SYMBOL_GPL(extcon_get_edev_by_phandle);
 
+/**
+ * extcon_get_edev_name() - Get the name of the extcon device.
+ * @edev:      the extcon device
+ */
+const char *extcon_get_edev_name(struct extcon_dev *edev)
+{
+       return !edev ? NULL : edev->name;
+}
+
 static int __init extcon_class_init(void)
 {
        return create_extcon_class();

diff --git a/include/linux/extcon.h b/include/linux/extcon.h
index 36f49c405dfb334bf03db9d6f886e6b6fa2d3667..e2cf6254c86a2b8183b41dc7e90c6e51ae3fe582 100644 (file)
--- a/include/linux/extcon.h
+++ b/include/linux/extcon.h
@@ -259,6 +259,10 @@ extern int extcon_unregister_notifier(struct extcon_dev *edev,
  * This function use phandle of devicetree to get extcon device directly.
  */
 extern struct extcon_dev *extcon_get_edev_by_phandle(struct device *dev, int index);
+
+/* Following API to get information of extcon device */
+extern const char *extcon_get_edev_name(struct extcon_dev *edev);
+
 #else /* CONFIG_EXTCON */
 static inline int extcon_dev_register(struct extcon_dev *edev)
 {