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usb: mtu3: get optional vbus for host only mode

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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>
This commit is contained in:
Chunfeng Yun 2017-10-13 17:10:44 +08:00 committed by Felipe Balbi
parent 4d79e042ed
commit 6638ec515f
1 changed files with 4 additions and 4 deletions
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8
drivers/usb/mtu3/mtu3_plat.c
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@ -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");