HID: multitouch: Add required quirk for Synaptics 0xcd7e device

Register the Synaptics device as a special multitouch device with certain
quirks that may improve usability of the touchpad device.

Reported-by: Rain <rain@sunshowers.io>
Closes: https://lore.kernel.org/linux-input/2bbb8e1d-1793-4df1-810f-cb0137341ff4@app.fastmail.com/
Signed-off-by: Rahul Rameshbabu <sergeantsagara@protonmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c
index 521b2ffb424490976097f0a6801afec00183501b..8db4ae05febc8f069528cb79095b44d97e83159b 100644 (file)
--- a/drivers/hid/hid-multitouch.c
+++ b/drivers/hid/hid-multitouch.c
@@ -2144,6 +2144,10 @@ static const struct hid_device_id mt_devices[] = {
                        USB_DEVICE_ID_MTP_STM)},
 
        /* Synaptics devices */
+       { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT,
+               HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
+                       USB_VENDOR_ID_SYNAPTICS, 0xcd7e) },
+
        { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT,
                HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
                        USB_VENDOR_ID_SYNAPTICS, 0xce08) },