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phy: rockchip: inno-usb2: power on phy if linestate is SE1

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Some special devices connected to host port, the linestate
maybe SE1 (DP/DM both in High level).

The below devices are the known special devices

Wireless HID: VID = 0xa604, PID = 0x0715
RK3308BS ADB: VID = 0x2207, PID = 0x0006

In order to support these special devices, this patch
handle the linestate SE1 as device connected state,
and power on the phy if it has already suspended.

Change-Id: I55fe83150c18d6c2629fbc857790ef04cdb68da5
Signed-off-by: William Wu <william.wu@rock-chips.com>
This commit is contained in:
William Wu
2023-05-22 16:05:13 +08:00
committed by Tao Huang
parent 107e417ebe
commit 9f424182f4
1 changed files with 10 additions and 0 deletions
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10
drivers/phy/rockchip/phy-rockchip-inno-usb2.c
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@ -59,6 +59,7 @@ enum rockchip_usb2phy_host_state {
PHY_STATE_DISCONNECT = 1,
PHY_STATE_CONNECT = 2,
PHY_STATE_FS_LS_ONLINE = 4,
PHY_STATE_SE1 = 6,
};
/**
@ -1484,6 +1485,15 @@ static void rockchip_usb2phy_sm_work(struct work_struct *work)
dev_dbg(&rport->phy->dev, "FS/LS online\n");
}
break;
case PHY_STATE_SE1:
if (rport->suspended) {
dev_dbg(&rport->phy->dev, "linestate is SE1, power on phy\n");
mutex_unlock(&rport->mutex);
rockchip_usb2phy_power_on(rport->phy);
mutex_lock(&rport->mutex);
rport->suspended = false;
}
break;
case PHY_STATE_DISCONNECT:
if (!rport->suspended) {
dev_dbg(&rport->phy->dev, "Disconnected\n");