Messages in this thread Patch in this message | | | From | Allen Hung <> | Subject | [PATCH 1/1] HID: multitouch: enable palm rejection if device implements confidence usage | Date | Fri, 20 Nov 2015 18:21:06 +0800 |
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The usage Confidence is mandary to Windows Precision Touchpad devices. The appearance of this usage is checked in hidinput_connect but the quirk MT_QUIRK_VALID_IS_CONFIDENCE is not applied to device accordingly. Apply this quirk and also remove quirk MT_QUIRK_ALWAYS_VALID to enable palm rejection for the WIN 8 touchpad devices which have implemented usage Confidence in its input reports.
Tested on Dell XPS 13 laptop.
Signed-off-by: Allen Hung <allen_hung@dell.com> --- drivers/hid/hid-multitouch.c | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c index 426b2f1..13aeff9 100644 --- a/drivers/hid/hid-multitouch.c +++ b/drivers/hid/hid-multitouch.c @@ -448,6 +448,11 @@ static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi, mt_store_field(usage, td, hi); return 1; case HID_DG_CONFIDENCE: + if (cls->name == MT_CLS_WIN_8 && + field->application == HID_DG_TOUCHPAD) { + cls->quirks &= ~MT_QUIRK_ALWAYS_VALID; + cls->quirks |= MT_QUIRK_VALID_IS_CONFIDENCE; + } mt_store_field(usage, td, hi); return 1; case HID_DG_TIPSWITCH: -- 1.9.1
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