From f1e51e99ed498d4aa9ae5df28e43d558ea627781 Mon Sep 17 00:00:00 2001
From: Chunfeng Yun <chunfeng.yun@mediatek.com>
Date: Mon, 27 Jul 2020 15:14:59 +0800
Subject: [PATCH] usb: mtu3: clear dual mode of u3port when disable device
Git-commit: f1e51e99ed498d4aa9ae5df28e43d558ea627781
Patch-mainline: v5.9-rc1
References: git-fixes
If not clear u3port's dual mode when disable device, the IP
will fail to enter sleep mode when suspend.
Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Link: https://lore.kernel.org/r/1595834101-13094-10-git-send-email-chunfeng.yun@mediatek.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/usb/mtu3/mtu3_core.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/usb/mtu3/mtu3_core.c b/drivers/usb/mtu3/mtu3_core.c
index 9e0b68b3920c..b3b459937566 100644
--- a/drivers/usb/mtu3/mtu3_core.c
+++ b/drivers/usb/mtu3/mtu3_core.c
@@ -131,8 +131,12 @@ static void mtu3_device_disable(struct mtu3 *mtu)
mtu3_setbits(ibase, SSUSB_U2_CTRL(0),
SSUSB_U2_PORT_DIS | SSUSB_U2_PORT_PDN);
- if (mtu->ssusb->dr_mode == USB_DR_MODE_OTG)
+ if (mtu->ssusb->dr_mode == USB_DR_MODE_OTG) {
mtu3_clrbits(ibase, SSUSB_U2_CTRL(0), SSUSB_U2_PORT_OTG_SEL);
+ if (mtu->is_u3_ip)
+ mtu3_clrbits(ibase, SSUSB_U3_CTRL(0),
+ SSUSB_U3_PORT_DUAL_MODE);
+ }
mtu3_setbits(ibase, U3D_SSUSB_IP_PW_CTRL2, SSUSB_IP_DEV_PDN);
}
--
2.16.4