mediatek: backport upstream mediatek patches

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

diff --git a/target/linux/mediatek/patches-4.14/0110-usb-mtu3-get-optional-vbus-for-host-only-mode.patch b/target/linux/mediatek/patches-4.14/0110-usb-mtu3-get-optional-vbus-for-host-only-mode.patch
new file mode 100644 (file)
index 0000000..d55fe7d
--- /dev/null
+++ b/target/linux/mediatek/patches-4.14/0110-usb-mtu3-get-optional-vbus-for-host-only-mode.patch
@@ -0,0 +1,45 @@
+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
+