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usb: ci_udc: implement dfu_usb_get_reset

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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>
This commit is contained in:
Stephen Warren 2014-08-25 14:02:15 -06:00 committed by Marek Vasut
parent f2ec4e34aa
commit 842ef9a98e
1 changed files with 7 additions and 0 deletions
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7
drivers/usb/gadget/ci_udc.c
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@ -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);
}