linux-kernel - [PATCH 0/3] HID: multitouch: set INPUT_PROP

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Message-Id: <20251121-wip-hid-pressurepad-v1-0-e32e5565a527@who-t.net>
Date: Fri, 21 Nov 2025 11:07:10 +1000
From: Peter Hutterer <peter.hutterer@...-t.net>
To: Jiri Kosina <jikos@...nel.org>, Benjamin Tissoires <bentiss@...nel.org>, 
 Shuah Khan <shuah@...nel.org>
Cc: Dmitry Torokhov <dmitry.torokhov@...il.com>, 
 linux-input@...r.kernel.org, linux-kselftest@...r.kernel.org, 
 linux-kernel@...r.kernel.org, Vadim Klishko <vadim@...que.com>, 
 Peter Hutterer <peter.hutterer@...-t.net>
Subject: [PATCH 0/3] HID: multitouch: set INPUT_PROP_PRESSUREPAD on
 compatible touchpads

Note: this requires INPUT_PROP_PRESSUREPAD [1] which is not yet
available in Linus' tree but it is in Dmitry's for-linus tree.

Nicely enough MS defines a button type for a pressurepad touchpad [2]
and it looks like most touchpad vendors fill this in.

The selftests require a bit of prep work (and a hack for the test
itself) - hidtools 0.12 requires python-libevdev 0.13 which in turn
provides constructors for unknown properties.

[1] https://lore.kernel.org/linux-input/20251030011735.GA969565@quokka/T/#m9d9b2e09eae5262cae202a5b917b543faa6fd996
[2] https://learn.microsoft.com/en-us/windows-hardware/design/component-guidelines/touchpad-windows-precision-touchpad-collection#device-capabilities-feature-report

Signed-off-by: Peter Hutterer <peter.hutterer@...-t.net>
---
Peter Hutterer (3):
      selftests/hid: require hidtools 0.12
      selftests/hid: use a enum class for the different button types
      HID: multitouch: set INPUT_PROP_PRESSUREPAD based on Digitizer/Button Type

 drivers/hid/hid-multitouch.c                       | 12 ++++-
 tools/testing/selftests/hid/tests/conftest.py      | 14 +++++
 .../testing/selftests/hid/tests/test_multitouch.py | 61 +++++++++++++++++-----
 3 files changed, 73 insertions(+), 14 deletions(-)
---
base-commit: 2bc4c50a42f8b83f611d0475598dc72740e87640
change-id: 20251111-wip-hid-pressurepad-8a800cdf1813

Best regards,
-- 
Peter Hutterer <peter.hutterer@...-t.net>