[v2] HID: Add quirk for Logitech Casa touchpad

Commit Message

Sean O'Brien April 29, 2024, 6:20 p.m. UTC

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 <[e-mail]>
---

 drivers/hid/hid-ids.h        | 1 +
 drivers/hid/hid-multitouch.c | 6 ++++++
 2 files changed, 7 insertions(+)

Patch

diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h
index 8376fb5e2d0b4..68b0f39deaa9a 100644
--- a/drivers/hid/hid-ids.h
+++ b/drivers/hid/hid-ids.h
@@ -823,6 +823,7 @@ 
 #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 04a014cd2a2f6..3df9e90693e3a 100644
--- a/drivers/hid/hid-multitouch.c
+++ b/drivers/hid/hid-multitouch.c
@@ -2081,6 +2081,12 @@  static const struct hid_device_id mt_devices[] = {
 			   USB_VENDOR_ID_LENOVO,
 			   USB_DEVICE_ID_LENOVO_X12_TAB) },
 
+	/* Logitech devices */
+	{ .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT_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,