linux-kernel - Re: [RFC 0/2] Support for buttons on newer MS Surface devices

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Message-ID: <a0f93af3-c587-40d5-2a85-fdc0f9e6b79f@gmail.com>
Date:   Sat, 1 Jun 2019 21:07:19 +0200
From:   Maximilian Luz <luzmaximilian@...il.com>
To:     unlisted-recipients:; (no To-header on input)
Cc:     linux-kernel@...r.kernel.org, linux-input@...r.kernel.org,
        platform-driver-x86@...r.kernel.org,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Hans de Goede <hdegoede@...hat.com>,
        Chen Yu <yu.c.chen@...el.com>,
        Darren Hart <dvhart@...radead.org>,
        Andy Shevchenko <andy@...radead.org>
Subject: Re: [RFC 0/2] Support for buttons on newer MS Surface devices

Hi,

any comments on this?

I should also mention that this has been tested via
https://github.com/jakeday/linux-surface.

Maximilian


On 5/16/19 4:25 PM, Maximilian Luz wrote:
> 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(-)
>