From: Sean O'Brien <seobrien@xxxxxxxxxxxx> [ Upstream commit dd2c345a94cfa3873cc20db87387ee509c345c1b ] This device sometimes doesn't send touch release signals when moving from >=4 fingers to <4 fingers. Using MT_QUIRK_NOT_SEEN_MEANS_UP instead of MT_QUIRK_ALWAYS_VALID makes sure that no touches become stuck. MT_QUIRK_FORCE_MULTI_INPUT is not necessary for this device, but does no harm. Signed-off-by: Sean O'Brien <seobrien@xxxxxxxxxxxx> Signed-off-by: Jiri Kosina <jkosina@xxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- drivers/hid/hid-ids.h | 1 + drivers/hid/hid-multitouch.c | 6 ++++++ 2 files changed, 7 insertions(+) diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h index 7b1fdfde5b405..0504bdd465013 100644 --- a/drivers/hid/hid-ids.h +++ b/drivers/hid/hid-ids.h @@ -777,6 +777,7 @@ #define USB_DEVICE_ID_LOGITECH_AUDIOHUB 0x0a0e #define USB_DEVICE_ID_LOGITECH_T651 0xb00c #define USB_DEVICE_ID_LOGITECH_DINOVO_EDGE_KBD 0xb309 +#define USB_DEVICE_ID_LOGITECH_CASA_TOUCHPAD 0xbb00 #define USB_DEVICE_ID_LOGITECH_C007 0xc007 #define USB_DEVICE_ID_LOGITECH_C077 0xc077 #define USB_DEVICE_ID_LOGITECH_RECEIVER 0xc101 diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c index 2e14e3071aa69..fea27d66d91c0 100644 --- a/drivers/hid/hid-multitouch.c +++ b/drivers/hid/hid-multitouch.c @@ -2082,6 +2082,12 @@ static const struct hid_device_id mt_devices[] = { USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_X12_TAB) }, + /* Logitech devices */ + { .driver_data = MT_CLS_NSMU, + HID_DEVICE(BUS_BLUETOOTH, HID_GROUP_MULTITOUCH_WIN_8, + USB_VENDOR_ID_LOGITECH, + USB_DEVICE_ID_LOGITECH_CASA_TOUCHPAD) }, + /* MosArt panels */ { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, MT_USB_DEVICE(USB_VENDOR_ID_ASUS, -- 2.43.0