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[03/25] HID: multitouch: fix Win8 protocol for Sharp like devices

Message ID 1359120190-18281-4-git-send-email-benjamin.tissoires@gmail.com (mailing list archive)
State New, archived
Delegated to: Jiri Kosina
Headers show

Commit Message

Benjamin Tissoires Jan. 25, 2013, 1:22 p.m. UTC 
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(+)
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Patch

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;