linux-kernel - Re: [PATCH RESEND v4 0/2] Fix Goodix touchscreen power leakage for MT8186 boards

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Date:   Thu, 8 Jun 2023 16:20:11 +0200 (CEST)
From:   Jiri Kosina <jikos@...nel.org>
To:     Fei Shao <fshao@...omium.org>
cc:     Rob Herring <robh+dt@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Jeff LaBundy <jeff@...undy.com>,
        Douglas Anderson <dianders@...omium.org>,
        Benjamin Tissoires <benjamin.tissoires@...hat.com>,
        Conor Dooley <conor+dt@...nel.org>,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Matthias Kaehlcke <mka@...omium.org>,
        Stephen Kitt <steve@....org>, devicetree@...r.kernel.org,
        linux-input@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH RESEND v4 0/2] Fix Goodix touchscreen power leakage for
 MT8186 boards

On Wed, 24 May 2023, Fei Shao wrote:

> These changes are based on the series in [1], which modified the
> i2c-hid-of-goodix driver and removed the workaround for a power leakage
> issue, so the issue revisits on Mediatek MT8186 boards (Steelix).
> 
> The root cause is that the touchscreen can be powered in different ways
> depending on the hardware designs, and it's not as easy to come up with
> a solution that is both simple and elegant for all the known designs.
> 
> To address the issue, I ended up adding a new boolean property for the
> driver so that we can control the power up/down sequence depending on
> that.
> 
> Adding a new property might not be the cleanest approach for this, but
> at least the intention would be easy enough to understand, and it
> introduces relatively small change to the code and fully preserves the
> original control flow.

Please apologize the delay. Now applied.

-- 
Jiri Kosina
SUSE Labs