linux-kernel - [PATCH 2/2] HID: multitouch: touchscreens also use confidence reports

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Date:   Thu, 10 Aug 2017 17:45:00 -0700
From:   Dmitry Torokhov <dmitry.torokhov@...il.com>
To:     Jiri Kosina <jikos@...nel.org>
Cc:     Benjamin Tissoires <benjamin.tissoires@...hat.com>,
        Henrik Rydberg <rydberg@...math.org>,
        Jason Gerecke <killertofu@...il.com>,
        Dennis Kempin <denniskempin@...gle.com>,
        Andrew de los Reyes <adlr@...gle.com>,
        linux-input@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 2/2] HID: multitouch: touchscreens also use confidence reports

According to [1] the confidence is used not only by touchpad devices,
but also by touchscreens.

[1] https://docs.microsoft.com/en-us/windows-hardware/design/component-guidelines/touchscreen-required-hid-top-level-collections

Signed-off-by: Dmitry Torokhov <dmitry.torokhov@...il.com>
---
 drivers/hid/hid-multitouch.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c
index c28defe50a10..1cb00de4bfd1 100644
--- a/drivers/hid/hid-multitouch.c
+++ b/drivers/hid/hid-multitouch.c
@@ -545,7 +545,8 @@ static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi,
 		case HID_DG_CONFIDENCE:
 			if ((cls->name == MT_CLS_WIN_8 ||
 				cls->name == MT_CLS_WIN_8_DUAL) &&
-			    field->application == HID_DG_TOUCHPAD) {
+			    (field->application == HID_DG_TOUCHPAD ||
+				field->application == HID_DG_TOUCHSCREEN)) {
 				cls->quirks |= MT_QUIRK_CONFIDENCE;
 				input_set_abs_params(hi->input,
 					ABS_MT_TOOL_TYPE,
-- 
2.14.0.434.g98096fd7a8-goog