usb: hub: Add a new API to test if a hub device is root hub
Sometimes we need know if a given hub device is root hub or not.
Add a new API to test this. This removes the xHCI driver's own
version is_root_hub() and change to use the new API.
While we are here, remove the unused/commented out get_usb_device()
in the xHCI driver too.
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
diff --git a/common/usb_hub.c b/common/usb_hub.c
index 086b155..a8c2f56 100644
--- a/common/usb_hub.c
+++ b/common/usb_hub.c
@@ -67,6 +67,16 @@
return hdev->descriptor.bDeviceProtocol == 3;
}
+#ifdef CONFIG_DM_USB
+bool usb_hub_is_root_hub(struct udevice *hub)
+{
+ if (device_get_uclass_id(hub->parent) != UCLASS_USB_HUB)
+ return true;
+
+ return false;
+}
+#endif
+
static int usb_get_hub_descriptor(struct usb_device *dev, void *data, int size)
{
unsigned short dtype = USB_DT_HUB;