HID: multitouch: fix Asus ExpertBook P2 P2451FA trackpoint

[ Upstream commit 4eab1c2fe06c98a4dff258dd64800b6986c101e9 ]

The HID descriptor of this device contains two mouse collections, one
for mouse emulation and the other for the trackpoint.

Both collections get merged and, because the first one defines X and Y,
the movemenent events reported by the trackpoint collection are
ignored.

Set the MT_CLS_WIN_8_FORCE_MULTI_INPUT class for this device to be able
to receive its reports.

This fix is similar to/based on commit 40d5bb87377a ("HID: multitouch:
enable multi-input as a quirk for some devices").

Link: https://gitlab.freedesktop.org/libinput/libinput/-/issues/825
Reported-by: Akito <the@akito.ooo>
Tested-by: Akito <the@akito.ooo>
Signed-off-by: José Expósito <jose.exposito89@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c
index 91a4d3fc30e0802a7e85acc94dbab98ef1d4f753..372cbdd223e09d2d919b40f74fcd2755789b306c 100644 (file)
--- a/drivers/hid/hid-multitouch.c
+++ b/drivers/hid/hid-multitouch.c
@@ -1967,6 +1967,10 @@ static const struct hid_device_id mt_devices[] = {
                HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
                        USB_VENDOR_ID_ELAN, 0x313a) },
 
+       { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT,
+               HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
+                       USB_VENDOR_ID_ELAN, 0x3148) },
+
        /* Elitegroup panel */
        { .driver_data = MT_CLS_SERIAL,
                MT_USB_DEVICE(USB_VENDOR_ID_ELITEGROUP,