Re: New sysfs interface for privacy screens

[Jani Nikula]

On Wed, 02 Oct 2019, Jonathan Corbet <corbet@xxxxxxx> wrote:
> On Tue, 1 Oct 2019 10:09:46 -0600
> Mat King <mathewk@xxxxxxxxxx> 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

Oh, I didn't realize it got merged already, I thought this was
related...

So we've already replicated the backlight sysfs interface problem for
privacy screens. :(

BR,
Jani.


-- 
Jani Nikula, Intel Open Source Graphics Center