From: Stephen Warren <swarren@nvidia.com>
Date: Mon, 25 Aug 2014 20:02:15 +0000 (-0600)
Subject: usb: ci_udc: implement dfu_usb_get_reset
X-Git-Url: https://code.ossystems.io/gitweb?a=commitdiff_plain;h=fca8b5aece70eb3d6290487d76ec930189bba8a3;p=bsp%2Fu-boot.git

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 4cd19c3afd..2572b346eb 100644
--- 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);
+}