linux-kernel - Re: New sysfs interface for privacy screens

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Message-ID: <20191006110045.GB24605@amd>
Date:   Sun, 6 Oct 2019 13:00:45 +0200
From:   Pavel Machek <pavel@...x.de>
To:     Jonathan Corbet <corbet@....net>
Cc:     Mat King <mathewk@...gle.com>, linux-kernel@...r.kernel.org,
        dri-devel@...ts.freedesktop.org, gregkh@...uxfoundation.org,
        rafael@...nel.org, Ross Zwisler <zwisler@...gle.com>,
        Rajat Jain <rajatja@...gle.com>,
        Lee Jones <lee.jones@...aro.org>,
        Daniel Thompson <daniel.thompson@...aro.org>,
        Jingoo Han <jingoohan1@...il.com>,
        Alexander Schremmer <alex@...xanderweb.de>
Subject: Re: New sysfs interface for privacy screens

On Wed 2019-10-02 09:46:50, Jonathan Corbet wrote:
> On Tue, 1 Oct 2019 10:09:46 -0600
> Mat King <mathewk@...gle.com> wrote:
> 
> > I have been looking into adding Linux support for electronic privacy
> > screens which is a feature on some new laptops which is built into the
> > display and allows users to turn it on instead of needing to use a
> > physical privacy filter. In discussions with my colleagues the idea of
> > using either /sys/class/backlight or /sys/class/leds but this new
> > feature does not seem to quite fit into either of those classes.
> 
> FWIW, it seems that you're not alone in this; 5.4 got some support for
> such screens if I understand things correctly:
> 
>   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=110ea1d833ad

Hmm. We may want to revert that one because it does more damage :-(.
									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

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