From: Hans de Goede <hdegoede@redhat.com>
Date: Tue, 10 Apr 2018 15:33:31 +0000 (-0400)
Subject: branch-merge: support device rotation
X-Git-Tag: 0.9.4~38
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=4992f06138d74dc56e40fee9b58bd8c9893a7251;p=thirdparty%2Fplymouth.git

branch-merge: support device rotation

On some devices the LCD panel is mounted in the casing in such a way
that the up/top side of the panel does not match with the top side of
the device.

Examples of this are:
-Tablets where the LCD panel is mounted upside-down (various models)
-Clamshell design devices use portrait tablet screens in a landscape fashion /
 a landscape case, e.g. the GPD pocket, GPD win, Asus T100HA and the VIOS LTH17
 (so the didplay is mounted rotated 90 degrees clock-wise or counter-clock-wise).

Starting with kernel 4.16 there is code in the kernel to:
-Detect affected devices
-Automatically rotate the fbconsole to compensate
-Let userspace know about this with a new "panel orientation" property on the drm connector of the panel

The patch series I'm attaching to this bug adds support for this to
plymouth, so that the boot-splash and diskcrypt-ask-password are shown
with the correct orientation / the right way up on these devices.
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4992f06138d74dc56e40fee9b58bd8c9893a7251