On 13/06/16 11:13, Jun Li wrote:

Hi

quoted

diff --git a/drivers/usb/common/common.c b/drivers/usb/common/common.c
index e3d0161..d7ec471 100644
--- a/drivers/usb/common/common.c
+++ b/drivers/usb/common/common.c

@@ -238,6 +238,33 @@ int of_usb_update_otg_caps(struct device_node *np,  }

EXPORT_SYMBOL_GPL(of_usb_update_otg_caps);

+#ifdef CONFIG_USB_OTG
+/**
+ * of_usb_get_otg - get the OTG controller linked to the USB controller
+ * @np: Pointer to the device_node of the USB controller
+ * @otg_caps: Pointer to the target usb_otg_caps to be set

Remove otg_caps.

Sure.

quoted

+ *
+ * Returns the OTG controller device or NULL on error.
+ */
+struct device *of_usb_get_otg(struct device_node *np) {
+	struct device_node *otg_np;
+	struct platform_device *pdev;
+
+	otg_np = of_parse_phandle(np, "otg-controller", 0);
+	if (!otg_np)
+		return NULL;
+
+	pdev = of_find_device_by_node(otg_np);
+	of_node_put(otg_np);
+	if (!pdev)
+		return NULL;
+
+	return &pdev->dev;
+}
+EXPORT_SYMBOL_GPL(of_usb_get_otg);
+#endif
+
 #endif

 MODULE_LICENSE("GPL");

diff --git a/include/linux/usb/of.h b/include/linux/usb/of.h index

de3237f..499a4e8 100644

--- a/include/linux/usb/of.h
+++ b/include/linux/usb/of.h

@@ -40,6 +40,15 @@ static inline struct device_node

*usb_of_get_child_node  }  #endif

+#if IS_ENABLED(CONFIG_OF) && IS_ENABLED(CONFIG_USB_OTG) struct device
+*of_usb_get_otg(struct device_node *np); #else static inline struct
+device *of_usb_get_otg(struct device_node *np) {
+	return NULL;
+}
+#endif
+
 #if IS_ENABLED(CONFIG_OF) && IS_ENABLED(CONFIG_USB_SUPPORT)  enum
usb_phy_interface of_usb_get_phy_mode(struct device_node *np);  #else
--
2.7.4

--
cheers,
-roger
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