USB: serial: ch341: add support for GW Instek USB2.0-Serial devices

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>

diff --git a/drivers/usb/serial/ch341.c b/drivers/usb/serial/ch341.c
index 29f4b87a9e74362d4999eefafe0422b4eb48740c..58cba8ee0277ae7fe23021b96ed78211f2bb01ca 100644 (file)
--- 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) },
        { },