Tslib and QT Integration getting raw input instead of applying modules/filters on ts.conf file

Question

I have an embedded linux system with a resistive touchscreen on /dev/input/event0 and a tslib installed. The tslib's tools such ts_calibrate and ts_tools are working perfectly with the modules/filters described in my /etc/ts.conf file.

The problem is that my QT application is not loading the library in the correct mode. It is loading tslib in raw mode, as the debug information shows.

I checked tslib's code, QT documentation and other similar questions on internet in search of any configuration that I'm missing, but apparently it's all OK.

This is my /etc/ts.conf file:

module_raw input
module pthres pmin=3975
module debounce drop_threshold=30
module variance delta=30
module dejitter delta=100
module median depth=3
module linear

This are my environment variables:

root@HMI:/application# env
SHELL=/bin/sh
RUNLEVEL=3
QWS_DISPLAY=LinuxFB:mmWidth=154.21:mmHeight=85.92
EDITOR=vi
PWD=/application
LOGNAME=root
TSLIB_CONSOLEDEVICE=none
HOME=/home/root
SSH_CONNECTION=192.168.1.30 42280 192.168.1.20 22
QT_QPA_PLATFORM=linuxfb
TSLIB_CALIBFILE=/etc/pointercal
QT_QPA_FB_TSLIB=1
TERM=xterm-256color
USER=root
SHLVL=1
TSLIB_PLUGINDIR=/usr/lib/ts
QT_DEBUG_PLUGINS=1
LD_LIBRARY_PATH=/usr/lib
XDG_RUNTIME_DIR=/var/volatile/tmp/runtime-root
PS1=\u@\h:\w\$ 
SSH_CLIENT=192.168.1.30 42280 22
TSLIB_TSEVENTTYPE=INPUT
TSLIB_TSDEVICE=/dev/input/event0
TSLIB_CONFFILE=/etc/ts.conf
TSLIB_FBDEVICE=/dev/fb0
PATH=/usr/local/bin:/usr/bin:/bin:/usr/local/sbin:/usr/sbin:/sbin
QT_QPA_PLATFORM_PLUGIN_PATH=/usr/lib/plugins/platforms
SSH_TTY=/dev/pts/0
QT_PLUGIN_PATH=/usr/lib/plugins
QT_QPA_GENERIC_PLUGINS=tslib:/dev/input/event0
OLDPWD=/home/root
_=/usr/bin/env 

And this is part of the debug output of my QT application starting it whith '''-plugin tslib''' (whole output available here):

QFactoryLoader::QFactoryLoader() looking at "/usr/lib/plugins/generic/libqtslibplugin.so"
Found metadata in lib /usr/lib/plugins/generic/libqtslibplugin.so, metadata=
{
    "IID": "org.qt-project.Qt.QGenericPluginFactoryInterface",
    "MetaData": {
        "Keys": [
            "Tslib",
            "TslibRaw"
        ]
    },
    "archreq": 0,
    "className": "QTsLibPlugin",
    "debug": false,
    "version": 331264
}


Got keys from plugin meta data ("tslib", "tslibraw")

As you can see in "Keys" when loading the library, it says "TslibRaw". I think this is the mode in which it is loading tslib and the reason why the filters/modules described in /etc/ts.conf are not being applied.

Does someone knows how to get my QT application working whith tslib and it's modules?