From: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Date: Thu, 26 Jul 2018 20:52:11 +0000 (-0700)
Subject: usb: dwc3: Set default mode for dwc_usb31
X-Git-Tag: v4.19-rc1~103^2~2^2~8
X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=a77004681148f5773c20370812ca7d14443fb091;p=linux.git

usb: dwc3: Set default mode for dwc_usb31

dwc_usb31 does not support OTG mode. If the controller supports DRD but
the dr_mode is not specified or set to OTG, then set the mode to
peripheral.

Signed-off-by: Thinh Nguyen <thinhn@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
---

diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
index 21e4931d0cc0..64ba664d467c 100644
--- a/drivers/usb/dwc3/core.c
+++ b/drivers/usb/dwc3/core.c
@@ -78,6 +78,14 @@ static int dwc3_get_dr_mode(struct dwc3 *dwc)
 			mode = USB_DR_MODE_HOST;
 		else if (IS_ENABLED(CONFIG_USB_DWC3_GADGET))
 			mode = USB_DR_MODE_PERIPHERAL;
+
+		/*
+		 * dwc_usb31 does not support OTG mode. If the controller
+		 * supports DRD but the dr_mode is not specified or set to OTG,
+		 * then set the mode to peripheral.
+		 */
+		if (mode == USB_DR_MODE_OTG && dwc3_is_usb31(dwc))
+			mode = USB_DR_MODE_PERIPHERAL;
 	}
 
 	if (mode != dwc->dr_mode) {