HID: multitouch: enable palm rejection if device implements confidence usage

[cascardo/linux.git] / drivers / hid / hid-multitouch.c

diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c
index 3d664d0..351ddd2 100644 (file)
--- a/drivers/hid/hid-multitouch.c
+++ b/drivers/hid/hid-multitouch.c
@@ -486,6 +486,11 @@ 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: