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

   1 From b6712b72d1273e792ee8a533048ba731a3709163 Mon Sep 17 00:00:00 2001
   2 From: Chunfeng Yun <chunfeng.yun@mediatek.com>
   3 Date: Fri, 13 Oct 2017 17:10:44 +0800
   4 Subject: [PATCH 110/224] usb: mtu3: get optional vbus for host only mode
   5
   6 When dr_mode is set as USB_DR_MODE_HOST, it's better to try to
   7 get optional vbus, this can increase flexibility, although we
   8 can set vbus as always on for regulator or put it in host driver
   9 to turn it on.
  10
  11 Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
  12 Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
  13 ---
  14  drivers/usb/mtu3/mtu3_plat.c | 8 ++++----
  15  1 file changed, 4 insertions(+), 4 deletions(-)
  16
  17 --- a/drivers/usb/mtu3/mtu3_plat.c
  18 +++ b/drivers/usb/mtu3/mtu3_plat.c
  19 @@ -300,10 +300,6 @@ static int get_ssusb_rscs(struct platfor
  20         of_property_read_u32(node, "mediatek,u3p-dis-msk",
  21                              &ssusb->u3p_dis_msk);
  22
  23 -       if (ssusb->dr_mode != USB_DR_MODE_OTG)
  24 -               return 0;
  25 -
  26 -       /* if dual-role mode is supported */
  27         vbus = devm_regulator_get(&pdev->dev, "vbus");
  28         if (IS_ERR(vbus)) {
  29                 dev_err(dev, "failed to get vbus\n");
  30 @@ -311,6 +307,10 @@ static int get_ssusb_rscs(struct platfor
  31         }
  32         otg_sx->vbus = vbus;
  33
  34 +       if (ssusb->dr_mode == USB_DR_MODE_HOST)
  35 +               return 0;
  36 +
  37 +       /* if dual-role mode is supported */
  38         otg_sx->is_u3_drd = of_property_read_bool(node, "mediatek,usb3-drd");
  39         otg_sx->manual_drd_enabled =
  40                 of_property_read_bool(node, "enable-manual-drd");