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Subject[PATCH 03/25] HID: multitouch: fix Win8 protocol for Sharp like devices
Date
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: Benjamin Tissoires <benjamin.tissoires@gmail.com>
---
drivers/hid/hid-multitouch.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c
index c4acdd0..8d0a9f9 100644
--- a/drivers/hid/hid-multitouch.c
+++ b/drivers/hid/hid-multitouch.c
@@ -317,6 +317,7 @@ 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;
--
1.8.1


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