[Buildroot] [Bug 14206] QT5 touch screen rotation does not work since 2021.05

[bugzilla at busybox.net]

https://bugs.busybox.net/show_bug.cgi?id=14206

Thomas Ruschival <t.ruschival at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |INVALID

--- Comment #2 from Thomas Ruschival <t.ruschival at gmail.com> ---
It is not a bug but a behavior of Qt5 v5.15.
(https://doc.qt.io/qt-5/inputs-linux-device.html) 

The issue can be solved/worked around in two different ways:

Either: 
Disable the use of libinput (QT_QPA_EGLFS_NO_LIBINPUT=1) and continue using the
environment variable
QT_QPA_EVDEV_TOUCHSCREEN_PARAMETERS=/dev/input/touch:rotate=90

OR: 
use the generic platform plugin configuration variable
QT_QPA_GENERIC_PLUGINS=evdevtouch:/dev/input/touch:rotate=90

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