linux-kernel - [PATCH AUTOSEL 5.19 20/38] r8152: add PID for the Lenovo OneLink+ Dock

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Message-Id: <20220910211623.69825-20-sashal@kernel.org>
Date:   Sat, 10 Sep 2022 17:16:05 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Jean-Francois Le Fillatre <jflf_kernel@....com>,
        "David S . Miller" <davem@...emloft.net>,
        Sasha Levin <sashal@...nel.org>, oliver@...kum.org,
        edumazet@...gle.com, kuba@...nel.org, pabeni@...hat.com,
        hayeswang@...ltek.com, aaron.ma@...onical.com,
        chenhao288@...ilicon.com, dober6023@...il.com,
        linux-usb@...r.kernel.org, netdev@...r.kernel.org
Subject: [PATCH AUTOSEL 5.19 20/38] r8152: add PID for the Lenovo OneLink+ Dock

From: Jean-Francois Le Fillatre <jflf_kernel@....com>

[ Upstream commit 1bd3a383075c64d638e65d263c9267b08ee7733c ]

The Lenovo OneLink+ Dock contains an RTL8153 controller that behaves as
a broken CDC device by default. Add the custom Lenovo PID to the r8152
driver to support it properly.

Also, systems compatible with this dock provide a BIOS option to enable
MAC address passthrough (as per Lenovo document "ThinkPad Docking
Solutions 2017"). Add the custom PID to the MAC passthrough list too.

Tested on a ThinkPad 13 1st gen with the expected results:

passthrough disabled: Invalid header when reading pass-thru MAC addr
passthrough enabled:  Using pass-thru MAC addr XX:XX:XX:XX:XX:XX

Signed-off-by: Jean-Francois Le Fillatre <jflf_kernel@....com>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/net/usb/cdc_ether.c | 7 +++++++
 drivers/net/usb/r8152.c     | 3 +++
 2 files changed, 10 insertions(+)

diff --git a/drivers/net/usb/cdc_ether.c b/drivers/net/usb/cdc_ether.c
index 2de09ad5bac03..e11f70911acc1 100644
--- a/drivers/net/usb/cdc_ether.c
+++ b/drivers/net/usb/cdc_ether.c
@@ -777,6 +777,13 @@ static const struct usb_device_id	products[] = {
 },
 #endif
 
+/* Lenovo ThinkPad OneLink+ Dock (based on Realtek RTL8153) */
+{
+	USB_DEVICE_AND_INTERFACE_INFO(LENOVO_VENDOR_ID, 0x3054, USB_CLASS_COMM,
+			USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
+	.driver_info = 0,
+},
+
 /* ThinkPad USB-C Dock (based on Realtek RTL8153) */
 {
 	USB_DEVICE_AND_INTERFACE_INFO(LENOVO_VENDOR_ID, 0x3062, USB_CLASS_COMM,
diff --git a/drivers/net/usb/r8152.c b/drivers/net/usb/r8152.c
index d142ac8fcf6e2..688905ea0a6d3 100644
--- a/drivers/net/usb/r8152.c
+++ b/drivers/net/usb/r8152.c
@@ -770,6 +770,7 @@ enum rtl8152_flags {
 	RX_EPROTO,
 };
 
+#define DEVICE_ID_THINKPAD_ONELINK_PLUS_DOCK		0x3054
 #define DEVICE_ID_THINKPAD_THUNDERBOLT3_DOCK_GEN2	0x3082
 #define DEVICE_ID_THINKPAD_USB_C_DONGLE			0x720c
 #define DEVICE_ID_THINKPAD_USB_C_DOCK_GEN2		0xa387
@@ -9581,6 +9582,7 @@ static bool rtl8152_supports_lenovo_macpassthru(struct usb_device *udev)
 
 	if (vendor_id == VENDOR_ID_LENOVO) {
 		switch (product_id) {
+		case DEVICE_ID_THINKPAD_ONELINK_PLUS_DOCK:
 		case DEVICE_ID_THINKPAD_THUNDERBOLT3_DOCK_GEN2:
 		case DEVICE_ID_THINKPAD_USB_C_DOCK_GEN2:
 		case DEVICE_ID_THINKPAD_USB_C_DOCK_GEN3:
@@ -9828,6 +9830,7 @@ static const struct usb_device_id rtl8152_table[] = {
 	REALTEK_USB_DEVICE(VENDOR_ID_MICROSOFT, 0x0927),
 	REALTEK_USB_DEVICE(VENDOR_ID_SAMSUNG, 0xa101),
 	REALTEK_USB_DEVICE(VENDOR_ID_LENOVO,  0x304f),
+	REALTEK_USB_DEVICE(VENDOR_ID_LENOVO,  0x3054),
 	REALTEK_USB_DEVICE(VENDOR_ID_LENOVO,  0x3062),
 	REALTEK_USB_DEVICE(VENDOR_ID_LENOVO,  0x3069),
 	REALTEK_USB_DEVICE(VENDOR_ID_LENOVO,  0x3082),
-- 
2.35.1