Register the Synaptics device as a special multitouch device with certain quirks that may improve usability of the touchpad device. Reported-by: Rain <rain@xxxxxxxxxxxxx> Closes: https://lore.kernel.org/linux-input/2bbb8e1d-1793-4df1-810f-cb0137341ff4@xxxxxxxxxxxxxxxx/ Signed-off-by: Rahul Rameshbabu <sergeantsagara@xxxxxxxxxxxxxx> --- Notes: Theory: I think the Synaptics device in the related email to the linux-input mailing list requires certain quirks like MT_QUIRK_HOVERING to correctly reconfigure the distance configuration for multitouch events. This might explain why light touches were not registered originally when MT_CLS_DEFAULT was used by default for the device. Would like to have this patch tested before being merged. A Tested-by: git trailer can then be appended. drivers/hid/hid-multitouch.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c index 521b2ffb4244..8db4ae05febc 100644 --- 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) }, -- 2.40.1
