From mboxrd@z Thu Jan  1 00:00:00 1970
From: Pavel Machek <pavel@denx.de>
Subject: Re: New sysfs interface for privacy screens
Date: Sun, 6 Oct 2019 13:00:45 +0200
Message-ID: <20191006110045.GB24605@amd>
References: <CAL_quvRknSSVvXN3q_Se0hrziw2oTNS3ENNoeHYhvciCRq9Yww@mail.gmail.com>
 <20191002094650.3fc06a85@lwn.net>
Mime-Version: 1.0
Content-Type: multipart/signed; micalg=pgp-sha1;
        protocol="application/pgp-signature"; boundary="bCsyhTFzCvuiizWE"
Return-path: <linux-kernel-owner@vger.kernel.org>
Content-Disposition: inline
In-Reply-To: <20191002094650.3fc06a85@lwn.net>
Sender: linux-kernel-owner@vger.kernel.org
To: Jonathan Corbet <corbet@lwn.net>
Cc: Mat King <mathewk@google.com>, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, gregkh@linuxfoundation.org, rafael@kernel.org, Ross Zwisler <zwisler@google.com>, Rajat Jain <rajatja@google.com>, Lee Jones <lee.jones@linaro.org>, Daniel Thompson <daniel.thompson@linaro.org>, Jingoo Han <jingoohan1@gmail.com>, Alexander Schremmer <alex@alexanderweb.de>
List-Id: dri-devel@lists.freedesktop.org


--bCsyhTFzCvuiizWE
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
Content-Transfer-Encoding: quoted-printable

On Wed 2019-10-02 09:46:50, Jonathan Corbet wrote:
> On Tue, 1 Oct 2019 10:09:46 -0600
> Mat King <mathewk@google.com> wrote:
>=20
> > 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.
>=20
> FWIW, it seems that you're not alone in this; 5.4 got some support for
> such screens if I understand things correctly:
>=20
>   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/comm=
it/?id=3D110ea1d833ad

Hmm. We may want to revert that one because it does more damage :-(.
									Pavel
--=20
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blo=
g.html

--bCsyhTFzCvuiizWE
Content-Type: application/pgp-signature; name="signature.asc"
Content-Description: Digital signature

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1

iEYEARECAAYFAl2ZyV0ACgkQMOfwapXb+vLMsgCgvF0IGuV68NhxRO0Vrfpn9drc
tRMAoLOK4nrZ6f33bOuuV/8VbK9F49Xk
=iq5R
-----END PGP SIGNATURE-----

--bCsyhTFzCvuiizWE--