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From:   Maximilian Luz <luzmaximilian@gmail.com>
Cc:     linux-kernel@vger.kernel.org, linux-input@vger.kernel.org,
        platform-driver-x86@vger.kernel.org,
        Dmitry Torokhov <dmitry.torokhov@gmail.com>,
        Hans de Goede <hdegoede@redhat.com>,
        Chen Yu <yu.c.chen@intel.com>,
        Darren Hart <dvhart@infradead.org>,
        Andy Shevchenko <andy@infradead.org>,
        Maximilian Luz <luzmaximilian@gmail.com>
Subject: [RFC 0/2] Support for buttons on newer MS Surface devices
Date:   Thu, 16 May 2019 16:25:21 +0200
Message-Id: <20190516142523.117978-1-luzmaximilian@gmail.com>
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This series adds suport for power and volume buttons on 5th and 6th
generation Microsoft Surface devices. Specifically, it adds support for
the power-button on the Surface Laptop 1 and Laptop 2, as well as
support for power- and (on-device) volume-buttons on the Surface Pro 5
(2017), Pro 6, and Book 2.

These devices use the same MSHW0040 device as on the Surface Pro 4,
however, whereas the Pro 4 uses an ACPI notify handler, the newer
devices use GPIO interrupts to signal these events.

The first patch of this series ensures that the surfacepro3_button
driver, used for MSHW0040 on the Pro 4, does not probe for the newer
devices. The second patch adapts soc_button_array to implement the
actual button support.

I think the changes to soc_button_array in the second patch warrant a
thorough review. I've tried to make things a bit more generic to be able
to integrate arbitrary ACPI GPIO power-/volume-button devices more
easily, I'm not sure if there may be reasons against this. 

Maximilian Luz (2):
  platform: Fix device check for surfacepro3_button
  input: soc_button_array for newer surface devices

 drivers/input/misc/soc_button_array.c     | 134 ++++++++++++++++++++--
 drivers/platform/x86/surfacepro3_button.c |  38 ++++++
 2 files changed, 160 insertions(+), 12 deletions(-)

-- 
2.21.0