From: John Youn <John.Youn@synopsys.com>
Date: Sat, 6 Feb 2016 01:08:18 +0000 (-0800)
Subject: UPSTREAM: usb: dwc3: DWC_usb31 controller check
X-Git-Tag: firefly_0821_release~1885
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=46ba6580a0e55096dc054a86d1f03bf4b592a11a;p=firefly-linux-kernel-4.4.55.git

UPSTREAM: usb: dwc3: DWC_usb31 controller check

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

Change-Id: I2018d882b389a8499d4c88171650ac22059139be
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@kernel.org>
Signed-off-by: Wu Liang feng <wulf@rock-chips.com>
(cherry picked from commit c4137a9c841ec7fb300782d211f2d6907f4d6e20)
---

diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h
index 52fbe58dcc79..1b941ee9e5d8 100644
--- a/drivers/usb/dwc3/core.h
+++ b/drivers/usb/dwc3/core.h
@@ -1025,6 +1025,12 @@ 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);