[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <36496bd6-b18a-de97-1afb-f2f8aeb3feaf@gmail.com>
Date: Wed, 17 Jun 2020 19:27:18 +0300
From: Dmitry Osipenko <digetx@...il.com>
To: Daniel Stone <daniel@...ishbar.org>
Cc: Emil Velikov <emil.l.velikov@...il.com>,
Thierry Reding <thierry.reding@...il.com>,
Thomas Zimmermann <tzimmermann@...e.de>,
Derek Basehore <dbasehore@...omium.org>,
Sam Ravnborg <sam@...nborg.org>,
Laurent Pinchart <laurent.pinchart@...asonboard.com>,
Sean Paul <sean@...rly.run>, linux-tegra@...r.kernel.org,
"Linux-Kernel@...r. Kernel. Org" <linux-kernel@...r.kernel.org>,
ML dri-devel <dri-devel@...ts.freedesktop.org>
Subject: Re: [PATCH v2 0/5] 180 degrees rotation support for NVIDIA Tegra DRM
17.06.2020 12:34, Daniel Stone пишет:
> Hi,
>
> On Tue, 16 Jun 2020 at 22:16, Dmitry Osipenko <digetx@...il.com> wrote:
>> The panel's orientation could be parsed by any panel driver and then
>> assigned as the connector's property in order to allow userspace/FB-core
>> to decide what to do with the rotated display. Apparently upstream
>> kernel supports only that one Samsung device which has display panel
>> mounted upside-down and it already uses the custom DT properties for
>> achieving the 180 rotation. So I don't quite see any panel drivers that
>> instantly could benefit from using the rotation property. Perhaps I can
>> add the orientation support to the panel-simple driver, but will it be
>> useful to anyone?
>
> Yes, exposing it to userspace is helpful, since Weston at least will
> parse the property and then apply the correct transform:
> https://gitlab.freedesktop.org/wayland/weston/-/merge_requests/315
Hello Daniel,
Thank you very much for the pointer! I missed that Weston now uses the
panel's orientation. I gave a quick test to the recent Weston and indeed
it applies the transform in accordance to the connector's orientation
property.
Powered by blists - more mailing lists