usb: ci_udc: implement dfu_usb_get_reset

This allows the USB code to determine whether a USB bus reset was issued,
which in turn allows the code to differentiate between a detach (return
to shell prompt) and a board reset/reboot request.

Signed-off-by: Stephen Warren <swarren@nvidia.com>

diff --git a/drivers/usb/gadget/ci_udc.c b/drivers/usb/gadget/ci_udc.c
index 4cd19c3afd2242219dc523cd2e8d0ab064c785eb..2572b346ebfa39c8204aa45912e119ea17104dfd 100644 (file)
--- a/drivers/usb/gadget/ci_udc.c
+++ b/drivers/usb/gadget/ci_udc.c
@@ -919,3 +919,10 @@ int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
 
        return 0;
 }
+
+bool dfu_usb_get_reset(void)
+{
+       struct ci_udc *udc = (struct ci_udc *)controller.ctrl->hcor;
+
+       return !!(readl(&udc->usbsts) & STS_URI);
+}