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path: root/drivers/usb/roles/class.c
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Diffstat (limited to 'drivers/usb/roles/class.c')
-rw-r--r--drivers/usb/roles/class.c21
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/usb/roles/class.c b/drivers/usb/roles/class.c
index 94b4e7db2b94..8273126ffdf4 100644
--- a/drivers/usb/roles/class.c
+++ b/drivers/usb/roles/class.c
@@ -175,6 +175,27 @@ void usb_role_switch_put(struct usb_role_switch *sw)
}
EXPORT_SYMBOL_GPL(usb_role_switch_put);
+/**
+ * usb_role_switch_find_by_fwnode - Find USB role switch with its fwnode
+ * @fwnode: fwnode of the USB Role Switch
+ *
+ * Finds and returns role switch with @fwnode. The reference count for the
+ * found switch is incremented.
+ */
+struct usb_role_switch *
+usb_role_switch_find_by_fwnode(const struct fwnode_handle *fwnode)
+{
+ struct device *dev;
+
+ if (!fwnode)
+ return NULL;
+
+ dev = class_find_device_by_fwnode(role_class, fwnode);
+
+ return dev ? to_role_switch(dev) : NULL;
+}
+EXPORT_SYMBOL_GPL(usb_role_switch_find_by_fwnode);
+
static umode_t
usb_role_switch_is_visible(struct kobject *kobj, struct attribute *attr, int n)
{