[PATCH 1/2] HID: multitouch: add support for Goodix GXTP7863 touchpad

The Goodix GXTP7863 touchpad controller (VID: 0x27c6, PID: 0x01e0)
found on Honor MagicBook laptops (e.g. FMI-76 / X14 / X16 Plus)
was missing from the mt_devices[] table.

As a result, it was claimed by hid-generic, which erroneously mapped
the vendor telemetry collection (0xFF01) to an input node, translating
the 1-Hz heartbeat timestamp into an endless loop of phantom
KEY_BRIGHTNESSUP autorepeat events.

Add the device to mt_devices[] with MT_CLS_DEFAULT so hid-multitouch
claims the touchpad, eliminating the phantom input node.

Tested on Honor MagicBook X14 Plus (FMI-76, AMD Ryzen 8845HS).

Signed-off-by: Ruzal Daminov <redacted>
---
 drivers/hid/hid-multitouch.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c
index edb37b4c8..f5ddaff5c 100644
--- a/drivers/hid/hid-multitouch.c
+++ b/drivers/hid/hid-multitouch.c

@@ -2269,6 +2269,11 @@ static void mt_on_hid_hw_close(struct hid_device *hdev)
  * So there is no point in adding here any device with MT_CLS_DEFAULT.
  */
 static const struct hid_device_id mt_devices[] = {
+	/* Goodix GXTP7863 Touchpad */
+	{ .driver_data = MT_CLS_DEFAULT,
+	  HID_DEVICE(BUS_I2C, HID_GROUP_ANY,
+		     I2C_VENDOR_ID_GOODIX, I2C_DEVICE_ID_GOODIX_01E0) },
+
 
 	/* 3M panels */
 	{ .driver_data = MT_CLS_3M,

-- 
2.55.0