From fa77ce201f7f2d823b07753575122d1ae5597fbe Mon Sep 17 00:00:00 2001
From: Stephan Brunner <s.brunner@stephan-brunner.net>
Date: Sat, 8 Jan 2022 13:00:20 +0100
Subject: [PATCH] USB: serial: ch341: add support for GW Instek USB2.0-Serial
 devices
Git-commit: fa77ce201f7f2d823b07753575122d1ae5597fbe
References: git-fixes
Patch-mainline: v5.17-rc4

Programmable lab power supplies made by GW Instek, such as the
GPP-2323, have a USB port exposing a serial port to control the device.

Stringing the supplied Windows driver, references to the ch341 chip are
found. Binding the existing ch341 driver to the VID/PID of the GPP-2323
("GW Instek USB2.0-Serial" as per the USB product name) works out of the
box, communication and control is now possible.

This patch should work with any GPP series power supply due to
similarities in the product line.

Signed-off-by: Stephan Brunner <s.brunner@stephan-brunner.net>
Link: https://lore.kernel.org/r/4a47b864-0816-6f6a-efee-aa20e74bcdc6@stephan-brunner.net
Cc: stable@vger.kernel.org
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Oliver Neukum <oneukum@suse.com>
---
 drivers/usb/serial/ch341.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/usb/serial/ch341.c b/drivers/usb/serial/ch341.c
index 29f4b87a9e74..58cba8ee0277 100644
--- a/drivers/usb/serial/ch341.c
+++ b/drivers/usb/serial/ch341.c
@@ -85,6 +85,7 @@ static const struct usb_device_id id_table[] = {
 	{ USB_DEVICE(0x1a86, 0x5523) },
 	{ USB_DEVICE(0x1a86, 0x7522) },
 	{ USB_DEVICE(0x1a86, 0x7523) },
+	{ USB_DEVICE(0x2184, 0x0057) },
 	{ USB_DEVICE(0x4348, 0x5523) },
 	{ USB_DEVICE(0x9986, 0x7523) },
 	{ },
-- 
2.34.1