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Commit c629dd7e authored by Benjamin Tissoires's avatar Benjamin Tissoires Committed by Jiri Kosina
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HID: multitouch: fix Win8 protocol for Sharp like devices 



The Sharp LC-20FE1-W screen (04dd:9681) behaves like the Nexio 42".
It may report out of ranges values that are filtered out by relying
on the Contact Count HID field.
Adding the quirk MT_QUIRK_CONTACT_CNT_ACCURATE makes hid-multitouch
strongest against this kind of device, without breaking the current
devices.

Signed-off-by: default avatarBenjamin Tissoires <benjamin.tissoires@gmail.com>
Signed-off-by: default avatarJiri Kosina <jkosina@suse.cz>
parent c2517f62

drivers/hid/hid-multitouch.c

+1 −0
Original line number Diff line number Diff line
@@ -311,6 +311,7 @@ static void mt_feature_mapping(struct hid_device *hdev, 
			*quirks |= MT_QUIRK_ALWAYS_VALID;

			*quirks |= MT_QUIRK_IGNORE_DUPLICATES;

			*quirks |= MT_QUIRK_HOVERING;

			*quirks |= MT_QUIRK_CONTACT_CNT_ACCURATE;

			*quirks &= ~MT_QUIRK_NOT_SEEN_MEANS_UP;

			*quirks &= ~MT_QUIRK_VALID_IS_INRANGE;

			*quirks &= ~MT_QUIRK_VALID_IS_CONFIDENCE;