linux-t2-patches/1010-HID-multitouch-allow-specifying-if-a-device-is-direc.patch

From b9f7232d2696b91ae98fadd7b14c531aa8edceb5 Mon Sep 17 00:00:00 2001
From: Kerem Karabay <kekrby@gmail.com>
Date: Wed, 19 Jul 2023 19:39:53 +0300
Subject: [PATCH 07/12] HID: multitouch: allow specifying if a device is direct
 in a class

Currently the driver determines the device type based on the
application, but this value is not reliable on Apple Touch Bars, where
the application is HID_DG_TOUCHPAD even though the devices are direct,
so allow setting it in classes.

Signed-off-by: Kerem Karabay <kekrby@gmail.com>
---
 drivers/hid/hid-multitouch.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c
index 624c1d3cc..f98fb36ff 100644
--- a/drivers/hid/hid-multitouch.c
+++ b/drivers/hid/hid-multitouch.c
@@ -147,6 +147,7 @@ struct mt_class {
 	__s32 sn_height;	/* Signal/noise ratio for height events */
 	__s32 sn_pressure;	/* Signal/noise ratio for pressure events */
 	__u8 maxcontacts;
+	bool is_direct;	/* true for touchscreens */
 	bool is_indirect;	/* true for touchpads */
 	bool export_all_inputs;	/* do not ignore mouse, keyboards, etc... */
 };
@@ -564,13 +565,13 @@ static struct mt_application *mt_allocate_application(struct mt_device *td,
 	mt_application->application = application;
 	INIT_LIST_HEAD(&mt_application->mt_usages);
 
-	if (application == HID_DG_TOUCHSCREEN)
+	if (application == HID_DG_TOUCHSCREEN && !td->mtclass.is_indirect)
 		mt_application->mt_flags |= INPUT_MT_DIRECT;
 
 	/*
 	 * Model touchscreens providing buttons as touchpads.
 	 */
-	if (application == HID_DG_TOUCHPAD) {
+	if (application == HID_DG_TOUCHPAD && !td->mtclass.is_direct) {
 		mt_application->mt_flags |= INPUT_MT_POINTER;
 		td->inputmode_value = MT_INPUTMODE_TOUCHPAD;
 	}
@@ -1318,6 +1319,9 @@ static int mt_touch_input_configured(struct hid_device *hdev,
 	if (td->serial_maybe)
 		mt_post_parse_default_settings(td, app);
 
+	if (cls->is_direct)
+		app->mt_flags |= INPUT_MT_DIRECT;
+
 	if (cls->is_indirect)
 		app->mt_flags |= INPUT_MT_POINTER;
 
-- 
2.42.0