From: Daniel Stone <daniel@fooishbar.org>
To: Dmitry Osipenko <digetx@gmail.com>
Cc: Emil Velikov <emil.l.velikov@gmail.com>,
Thierry Reding <thierry.reding@gmail.com>,
Thomas Zimmermann <tzimmermann@suse.de>,
Derek Basehore <dbasehore@chromium.org>,
Sam Ravnborg <sam@ravnborg.org>,
Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
Sean Paul <sean@poorly.run>,
linux-tegra@vger.kernel.org,
"Linux-Kernel@Vger. Kernel. Org" <linux-kernel@vger.kernel.org>,
ML dri-devel <dri-devel@lists.freedesktop.org>
Subject: Re: [PATCH v2 0/5] 180 degrees rotation support for NVIDIA Tegra DRM
Date: Wed, 17 Jun 2020 10:34:41 +0100 [thread overview]
Message-ID: <CAPj87rPwwHWtYpuZfiTMyELvr3D+UAY8CVnH3v6+Lo1-UMRRVA@mail.gmail.com> (raw)
In-Reply-To: <fe845434-cbf6-29d4-eeb6-8868d628fd04@gmail.com>
Hi,
On Tue, 16 Jun 2020 at 22:16, Dmitry Osipenko <digetx@gmail.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
Cheers,
Daniel
next prev parent reply other threads:[~2020-06-17 9:36 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-14 20:01 [PATCH v2 0/5] 180 degrees rotation support for NVIDIA Tegra DRM Dmitry Osipenko
2020-06-14 20:01 ` [PATCH v2 1/5] drm/panel: Add helper for reading DT rotation Dmitry Osipenko
2020-06-14 20:01 ` [PATCH v2 2/5] drm/panel: lvds: Set up panel orientation Dmitry Osipenko
2020-06-14 20:01 ` [PATCH v2 3/5] drm/tegra: plane: Rename bottom_up to reflect_y Dmitry Osipenko
2020-06-14 20:01 ` [PATCH v2 4/5] drm/tegra: plane: Support horizontal reflection mode Dmitry Osipenko
2020-06-14 20:01 ` [PATCH v2 5/5] drm/tegra: plane: Support 180° rotation Dmitry Osipenko
2020-06-15 16:57 ` Ville Syrjälä
2020-06-15 18:07 ` Dmitry Osipenko
2020-06-15 21:47 ` Emil Velikov
2020-06-16 11:25 ` Dmitry Osipenko
2020-06-17 18:50 ` Dmitry Osipenko
2020-06-15 22:26 ` [PATCH v2 0/5] 180 degrees rotation support for NVIDIA Tegra DRM Emil Velikov
2020-06-16 11:40 ` Dmitry Osipenko
2020-06-16 15:48 ` Emil Velikov
2020-06-16 17:20 ` Dmitry Osipenko
2020-06-16 17:45 ` Laurent Pinchart
2020-06-16 21:25 ` Dmitry Osipenko
2020-06-16 18:54 ` Emil Velikov
2020-06-16 21:16 ` Dmitry Osipenko
2020-06-17 9:34 ` Daniel Stone [this message]
2020-06-17 16:27 ` Dmitry Osipenko
2020-06-16 12:00 ` Dmitry Osipenko
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