From: John Youn <John.Youn@synopsys.com>
Date: Sat, 6 Feb 2016 01:08:18 +0000 (-0800)
Subject: usb: dwc3: DWC_usb31 controller check
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=c4137a9c841ec7fb300782d211f2d6907f4d6e20;p=linux-beck.git

usb: dwc3: DWC_usb31 controller check

Add a convenience function to check if the controller is DWC_usb31.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@kernel.org>
---

diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h
index e4f8b90d9627..c0520d67c2c3 100644
--- a/drivers/usb/dwc3/core.h
+++ b/drivers/usb/dwc3/core.h
@@ -1024,6 +1024,12 @@ struct dwc3_gadget_ep_cmd_params {
 void dwc3_set_mode(struct dwc3 *dwc, u32 mode);
 int dwc3_gadget_resize_tx_fifos(struct dwc3 *dwc);
 
+/* check whether we are on the DWC_usb31 core */
+static inline bool dwc3_is_usb31(struct dwc3 *dwc)
+{
+	return !!(dwc->revision & DWC3_REVISION_IS_DWC31);
+}
+
 #if IS_ENABLED(CONFIG_USB_DWC3_HOST) || IS_ENABLED(CONFIG_USB_DWC3_DUAL_ROLE)
 int dwc3_host_init(struct dwc3 *dwc);
 void dwc3_host_exit(struct dwc3 *dwc);