openwrt/target/linux/mediatek/patches-4.14/0110-usb-mtu3-get-optional-vbus-for-host-only-mode.patch

From b6712b72d1273e792ee8a533048ba731a3709163 Mon Sep 17 00:00:00 2001
From: Chunfeng Yun <chunfeng.yun@mediatek.com>
Date: Fri, 13 Oct 2017 17:10:44 +0800
Subject: [PATCH 110/224] usb: mtu3: get optional vbus for host only mode

When dr_mode is set as USB_DR_MODE_HOST, it's better to try to
get optional vbus, this can increase flexibility, although we
can set vbus as always on for regulator or put it in host driver
to turn it on.

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
---
 drivers/usb/mtu3/mtu3_plat.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/usb/mtu3/mtu3_plat.c b/drivers/usb/mtu3/mtu3_plat.c
index 1e473b068650..7ca81f4e78a3 100644
--- a/drivers/usb/mtu3/mtu3_plat.c
+++ b/drivers/usb/mtu3/mtu3_plat.c
@@ -300,10 +300,6 @@ static int get_ssusb_rscs(struct platform_device *pdev, struct ssusb_mtk *ssusb)
 	of_property_read_u32(node, "mediatek,u3p-dis-msk",
 			     &ssusb->u3p_dis_msk);
 
-	if (ssusb->dr_mode != USB_DR_MODE_OTG)
-		return 0;
-
-	/* if dual-role mode is supported */
 	vbus = devm_regulator_get(&pdev->dev, "vbus");
 	if (IS_ERR(vbus)) {
 		dev_err(dev, "failed to get vbus\n");
@@ -311,6 +307,10 @@ static int get_ssusb_rscs(struct platform_device *pdev, struct ssusb_mtk *ssusb)
 	}
 	otg_sx->vbus = vbus;
 
+	if (ssusb->dr_mode == USB_DR_MODE_HOST)
+		return 0;
+
+	/* if dual-role mode is supported */
 	otg_sx->is_u3_drd = of_property_read_bool(node, "mediatek,usb3-drd");
 	otg_sx->manual_drd_enabled =
 		of_property_read_bool(node, "enable-manual-drd");
-- 
2.11.0