linux-kernel - [PATCH v2 12/13] HID: multitouch: touchscreens also use confidence reports

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Message-Id: <20180607075448.5706-13-benjamin.tissoires@redhat.com>
Date:   Thu,  7 Jun 2018 09:54:47 +0200
From:   Benjamin Tissoires <benjamin.tissoires@...hat.com>
To:     Jiri Kosina <jikos@...nel.org>,
        Dmitry Torokhov <dmitry.torokhov@...il.com>
Cc:     Mario.Limonciello@...l.com,
        Peter Hutterer <peter.hutterer@...-t.net>,
        linux-input@...r.kernel.org, linux-kernel@...r.kernel.org,
        Benjamin Tissoires <benjamin.tissoires@...hat.com>
Subject: [PATCH v2 12/13] HID: multitouch: touchscreens also use confidence reports

From: Dmitry Torokhov <dmitry.torokhov@...il.com>

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>
[rebased]
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@...hat.com>

---

no changes in v2 (compared to Dmitry's initial submission)
---
 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 36c8b67bb032..9c708aa261ee 100644
--- a/drivers/hid/hid-multitouch.c
+++ b/drivers/hid/hid-multitouch.c
@@ -734,7 +734,8 @@ 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))
 				app->quirks |= MT_QUIRK_CONFIDENCE;
 
 			if (app->quirks & MT_QUIRK_CONFIDENCE)
-- 
2.14.3