Linux/TDA2EXEVM: Show the Qt Application in TDA2EX Platform

Raj Kumar67

Prodigy 160 points

Part Number: TDA2EXEVM

Tool/software: Linux

Hi TI Experts,

I'm working customized TDA2EX platform.

I have cross compiled the QT 5.2.1 version for TDA2EX platform. I have created the qt application.

So I just want to run GUI application in TDA2Ex !!!

Is it any arguments required to run GUI ? Is it any document for my reference.

Kindly suggest me.

Thanks & Regards,

RajKumar.

over 6 years ago

0 Yordan Kamenov over 6 years ago

TI__Mastermind 42515 points

Hi Raj,

which SDK you use? VisionSDK (and it's linux rootfs) do not have support for QT.
Can you check this thread for some directions:
e2e.ti.com/.../2584162

Regards,
Yordan

0 Raj Kumar67 over 6 years ago in reply to Yordan Kamenov

Prodigy 160 points

Hi Yordan,

Thanks for your reply,

We noticed Qt5 libraries in VisionSDK 3.04 filesystem, So we thought already
it is available in VisionSDK.

./usr/lib/libQt5PrintSupport.so.5
./usr/lib/libQt5Test.so.5.6
./usr/lib/libQt5Sql.so.5
./usr/lib/libQt5Sql.so.5.6
./usr/lib/libQt5OpenGL.so.5.6.2
./usr/lib/libQt5Network.so.5.6
./usr/lib/libQt5DBus.so.5.6
./usr/lib/libQt5Gui.so.5
./usr/lib/libQt5Gui.so.5.6.2
./usr/lib/libQt5Xml.so.5.6.2
./usr/lib/libQt5Network.so.5.6.2
./usr/lib/libQt5Test.so.5
./usr/lib/libQt5Xml.so.5.6
./usr/lib/libQt5DBus.so.5
./usr/lib/libQt5EglDeviceIntegration.so.5
./usr/lib/libQt5DBus.so.5.6.2
./usr/lib/libQt5Core.so.5
./usr/lib/libQt5Widgets.so.5.6
./usr/lib/libQt5EglDeviceIntegration.so.5.6.2
./usr/lib/libQt5Concurrent.so.5
./usr/lib/libQt5Sql.so.5.6.2
./usr/lib/libQt5Concurrent.so.5.6.2
./usr/lib/libQt5Core.so.5.6.2
./usr/lib/libQt5EglDeviceIntegration.so.5.6
./usr/lib/libQt5Widgets.so.5.6.2
./usr/lib/libQt5OpenGL.so.5
./usr/lib/libQt5Concurrent.so.5.6
./usr/lib/libQt5PrintSupport.so.5.6
./usr/lib/libQt5Test.so.5.6.2
./usr/lib/libQt5PrintSupport.so.5.6.2
./usr/lib/libQt5Gui.so.5.6
./usr/lib/libQt5Widgets.so.5
./usr/lib/libQt5Core.so.5.6
./usr/lib/libQt5Network.so.5
./usr/lib/libQt5Xml.so.5
./usr/lib/libQt5OpenGL.so.5.6

Kindly let us know how any example Qt application available in VisionSDK 3.04.

If Qt is not yet supported in VisionSDK, Let us know the changes or
procedure documents to port Qt in VisionSDK 3.04.

0 Yordan Kamenov over 6 years ago in reply to Raj Kumar67

TI__Mastermind 42515 points

Hi Raj,

the rootfs for VisionSDK 3.04 do not have support for Qt. You can use the rootfs from Processor SDK Linux Automotive to run Qt apps:
e2e.ti.com/.../2737137

but in that case you will not have integration with VisionSDK out-of-the-box as VisionSDK uses M4 based display and in it's Linux variant it uses Virtual DRM interface, see here for details:
e2e.ti.com/.../2643725

it should be possible to get PSDKLA's rootfs and integrate it with VisionSDK, but it is not straightforward and there is no particular document for this. There is a list of components that need to be changed:
e2e.ti.com/.../2597171

Regards,
Yordan

0 Raj Kumar67 over 6 years ago in reply to Yordan Kamenov

Prodigy 160 points

Hi Yordan,

Thanks for your feedback.

As per the above links we understand there are two approaches ,

1. Take the PSDKLA and port the necessary components one by one from Vision
SDK
2. Vision SDK has support for Virtual DRM Interface, and we have to enable
linuxfb with DRM dump buffer support. In this case, Qt will use linuxfb and
internally the content will be displayed through DRM. Please refer the post
e2e.ti.com/.../2643725

We are thinking to take up the Option "2" of using DRM interface. In our
case, we will run the Qt application from A15, and video display through M4.
So the DSS will be controlled by both A15 and M4 through DRM, Is our
understanding correct ? Also will the alpha blending(Qt screen + Video) and
z-order can be controlled from A15 ?

Thanks & Regards,
Rajkumar

0 Yordan Kamenov over 6 years ago in reply to Raj Kumar67

TI__Mastermind 42515 points

Hi Rajkumar,

I have pinged graphics expert to provide further help as I am not familiar with this. He will reply here soon.

Regards,
Yordan

0 Raj Kumar67 over 6 years ago in reply to Yordan Kamenov

Prodigy 160 points

Hi Yordan,

Ok, Thank you.

Regards,
Rajkumar

0 Subhajit Paul over 6 years ago in reply to Raj Kumar67

TI__Expert 7015 points

QT applications are dependent on weston. Do you have weston running?

0 Raj Kumar67 over 6 years ago in reply to Subhajit Paul

Prodigy 160 points

Hi Subhajit,

Thanks for your reply.

We are new to this, So I do not know about weston running.
How to check weston running?
Can you give me any document for my reference?

Regards,
Rajkumar

0 Subhajit Paul over 6 years ago in reply to Raj Kumar67

TI__Expert 7015 points

you can check in /var/log/weston.log

0 Raj Kumar67 over 6 years ago in reply to Subhajit Paul

Prodigy 160 points

Hi Subhajit,

/var/log/weston.log file contains

Date: 2018-06-12 UTC
[00:16:28.283] weston 1.9.0
http://wayland.freedesktop.org
Bug reports to: bugs.freedesktop.org/enter_bug.cgi
Build: 1.8.93-2-gb05cdb8 configure.ac: bump to version 1.9.0 for the official release (2015-09-21 18:11:26 -0700)
[00:16:28.284] OS: Linux, 4.4.84-00027-g018eb62-dirty, #2 SMP PREEMPT Fri Nov 9 16:28:10 IST 2018, armv7l
[00:16:28.285] Using config file '/etc//weston.ini'
[00:16:28.290] Loading module '/usr/lib/weston/drm-backend.so'
[00:16:28.322] Output repaint window is 7 ms maximum.
[00:16:28.322] initializing drm backend
[00:16:28.323] no drm device found
[00:16:28.323] fatal: failed to create compositor backend

Regards,
Rajkumar

0 Subhajit Paul over 6 years ago in reply to Raj Kumar67

TI__Expert 7015 points

Raj Kumar,

TI SDKs only support DRM based solutions. It seems like you have a highly customised setup where DRM drivers are not used.

We do not support any other framework apart from DRM

0 Raj Kumar67 over 6 years ago in reply to Subhajit Paul

Prodigy 160 points

Hi Subhajit,

We are enabled DRM in kernal. So After enabled we Got error like,

root@dra7xx-evm:/var/log# cat weston.log
Date: 2018-06-11 UTC
[19:54:30.732] weston 1.9.0
http://wayland.freedesktop.org
Bug reports to: bugs.freedesktop.org/enter_bug.cgi
Build: 1.8.93-2-gb05cdb8 configure.ac: bump to version 1.9.0 for the official release (2015-09-21 18:11:26 -0700)
[19:54:30.732] OS: Linux, 4.4.84-00027-g018eb62-dirty, #3 SMP PREEMPT Fri Nov 16 19:17:00 IST 2018, armv7l
[19:54:30.740] Using config file '/etc//weston.ini'
[19:54:30.753] Loading module '/usr/lib/weston/drm-backend.so'
[19:54:30.792] Output repaint window is 7 ms maximum.
[19:54:30.792] initializing drm backend
[19:54:30.794] using /dev/dri/card0
[19:54:30.797] Loading module '/usr/lib/weston/gl-renderer.so'
loaded module : gbm_pvr.so
found valid GBM backend : gbm_pvr.so
[19:54:30.896] failed to initialize egl
[19:54:30.896] fatal: failed to create compositor backend
PVR:(Error): [ 581-> 581] < gbm_pvr_create_device():645|ERROR> Failed to create DBM device: No such device [0, ]

Regards,
Rajkumar

0 Rajesh Kannan over 6 years ago in reply to Raj Kumar67

Genius 4480 points

Hi Subhajit,

Any response for this issue ?

Which DBM device is referring ?

Regards,

Rajesh Kannan S

0 Rajesh Kannan over 6 years ago in reply to Rajesh Kannan

Genius 4480 points

Hi,

Now I could able to see wayland terminal on HDMI display via M4 core.

Could you tell me how to run GUI(QT) Application by using wayland protocol.

Regards,

Rajesh Kannan S

0 Raj Kumar67 over 6 years ago in reply to Rajesh Kannan

Prodigy 160 points

Hi TI Experts,

Now I have cross compiled the QT 5.6.2 version for TDA2EX platform. I have created the qt application.

Run the Qt application like,

./DVR_GUI --platform eglfs

So After run the Qt application we got error like,

This application failed to start because it could not find or load the Qt platform plugin "eglfs"
in "".

Reinstalling the application may fix this problem.
Aborted (core dumped)

Can you tell me, how to resolve this issue.

Thank you,

Regards,
Rajkumar

0 Subhajit Paul over 6 years ago in reply to Raj Kumar67

TI__Expert 7015 points

It looks like your system does not have any DRM device. Can you send the output of "ls /dev/dri/*"

0 Raj Kumar67 over 6 years ago in reply to Subhajit Paul

Prodigy 160 points

Hi Subhajit Paul,

Thanks for your reply,

This is the output of "ls /dev/dri/*"

root@dra7xx-evm:/dev/dri# ls /dev/dri/*
/dev/dri/card0 /dev/dri/card1 /dev/dri/card2 /dev/dri/controlD64 /dev/dri/controlD65 /dev/dri/renderD128 /dev/dri/renderD129
root@dra7xx-evm:/dev/dri#

Thanks & Regards,
Rajkumar

0 Raj Kumar67 over 6 years ago in reply to Raj Kumar67

Prodigy 160 points

Hi Subhajit Paul,

Could you guide me to enable /dev/fb* support by default in this platform.

Regards,

Rajkumar

0 Subhajit Paul over 6 years ago in reply to Raj Kumar67

TI__Expert 7015 points

Raj Kumar,

TI does not support FBdev implementation on DRAxxx platforms. When a DRM framework is setup, it should expose an emulated FBdev which you should be able to find in /dev/fb0

Regards,
Subhajit

0 Raj Kumar67 over 6 years ago in reply to Subhajit Paul

Prodigy 160 points

Hi Subhajit,

Thanks for your reply.

root@dra7xx-evm:/dev/dri# ls /dev/dri/*

/dev/dri/card0 /dev/dri/card1 /dev/dri/card2 /dev/dri/controlD64 /dev/dri/controlD65 /dev/dri/renderD128 /dev/dri/renderD129

As you said, by seeing this output DRM has been enabled.

If DRM framework is setup, it should expose an emulated FBdev should be able to find in /dev/fb0 correct ?

If is not enabled by default, FbDev support needs to be added ? Is there any way to check it ?

Regards,

RajKumar

0 Subhajit Paul over 6 years ago in reply to Raj Kumar67

TI__Expert 7015 points

Check in the kernel .config file if CONFIG_DRM_FBDEV_EMULATION is enabled

0 Rajesh Kannan over 6 years ago in reply to Subhajit Paul

Genius 4480 points

Hi,

Thanks for your reply.
Ya its enabled.

Symbol: DRM_FBDEV_EMULATION [=y]
Type : boolean
Prompt: Enable legacy fbdev support for your modesetting driver
Location:
-> Device Drivers
-> Graphics support
(1) -> Direct Rendering Manager (XFree86 4.1.0 and higher DRI support) (DRM [=y])
Defined at drivers/gpu/drm/Kconfig:50
Depends on: HAS_IOMEM [=y] && DRM [=y]
Selects: DRM_KMS_HELPER [=y] && DRM_KMS_FB_HELPER [=y]

Kindly suggest !!!

Regards,
Rajkumar

0 Subhajit Paul over 6 years ago in reply to Rajesh Kannan

TI__Expert 7015 points

Do you see a problem when you use omapdrm instead of virtual DRM?

0 Rajesh Kannan over 6 years ago in reply to Subhajit Paul

Genius 4480 points

Hi,

I have enabled VDRM and ompdrm. I have tried to run GUI application, it was giving /dev/fb0 no such file or directory.

Then I replied to you.

You said, You will not have an framebuffer device when using vdrm. Try to use DRM based EGL

Now I have disabled VDRM. Trying to open fb0 is having problem.

I couldn't able to see the node from /dev/vdrm-controller-0 and weston output is not showing in HDMI display.

Regards,

Rajesh Kannan

0 Subhajit Paul over 6 years ago in reply to Rajesh Kannan

TI__Expert 7015 points

try to run any other usecase in apps.out and verify whether HDMI display code in vision SDK is functional. If single camera usecases etc run as expected, then we can start debugging why weston buffers are not showing up

0 Rajesh Kannan over 6 years ago in reply to Subhajit Paul

Genius 4480 points

Hi,

Without Enabling VDRM,the below mentioned useacse is showing on HDMI display.

a: 4CH CSI2 CAL capture + SgxFrmCpy + DISPLAY - Only HDMI 1080p display supported

Other than that showing assertion failure.

Regards,

Rajesh Kannan S

0 Raj Kumar67 over 6 years ago in reply to Rajesh Kannan

Prodigy 160 points

Hi,

Any update regarding frame buffer /dev/fb* ?

Kindly suggest

Regards,

Rajesh Kannan S

0 Raj Kumar67 over 6 years ago in reply to Raj Kumar67

Prodigy 160 points

Hi,

As per Linux Core DSS Userguide, If I enabled omapdrm it should create /dev/fb* (CONFIG_DRM_FBDEV_EMULATION) node by default.
In kernel config also it's showing the option has been enabled.
But In filesys, doesn't have a support to create the frame buffer node. What could be the dependency to enable to access frame buffer node.

Kindly suggest me to solve this issue !!!

Regards,

Rajesh Kannan S

0 Rajesh Kannan over 6 years ago in reply to Raj Kumar67

Genius 4480 points

Hi,

I have enabled VDRM as well as OMAPDRM in kernel_config and cross compiled QT along with wayland support.

By using weston --tty=1 --backend= drm-backend.so&. I could able to see the output on HDMI Display.

But performance wise it's very slow. Is there any way to enable frame buffer to use EGL

I have attached the log. Kindly suggest me to solve this issue.

Regards,

Rajesh Kannan S

Fullscreen Performance.txt Download

root@dra7xx-evm:/opt/vision_sdk# top 
Mem: 249476K used, 433184K free, 17404K shrd, 4960K buff, 92156K cached
CPU:   0% usr  10% sys   0% nic  90% idle   0% io   0% irq   0% sirq
Load average: 0.13 0.07 0.02 2/102 945
  PID  PPID USER     STAT   VSZ %VSZ %CPU COMMAND
  945   860 root     R     1960   0%   5% top
  292     2 root     RW       0   0%   5% [kworker/0:4]
  810   803 root     S    76988  11%   0% weston --idle-time=0
  873     1 root     S    60224   9%   0% ./DVR_GUI -platform wayland-egl
  834   810 root     S    14788   2%   0% /usr/libexec/weston-desktop-shell
  286     1 systemd- S    11992   2%   0% /lib/systemd/systemd-timesyncd
  188     1 root     S    10676   2%   0% /lib/systemd/systemd-udevd
  827     1 root     S     9760   1%   0% /usr/bin/lad_dra7xx -g -l lad.txt
  857   851 root     S     7356   1%   0% (sd-pam)
  840   810 root     S     7012   1%   0% /usr/libexec/weston-keyboard
  134     1 root     S     6320   1%   0% /lib/systemd/systemd-journald
  851     1 root     S     5336   1%   0% /lib/systemd/systemd --user
    1     0 root     S     5228   1%   0% {systemd} /sbin/init
  807     1 root     S     4864   1%   0% /bin/login --
  480     1 messageb S     4192   1%   0% /usr/bin/dbus-daemon --system --address=systemd: --nofork --nopidfile --systemd-activation
  796     1 systemd- S     2984   0%   0% /lib/systemd/systemd-resolved
  592     1 systemd- S     2676   0%   0% /lib/systemd/systemd-networkd
  860   807 root     S     2676   0%   0% -sh
  803     1 root     S     2668   0%   0% {runWeston} /bin/sh /usr/bin/runWeston
  410     1 root     S     2600   0%   0% /lib/systemd/systemd-logind
  436     1 root     S     1976   0%   0% /sbin/syslogd -n -C
  426     1 root     S     1960   0%   0% /sbin/klogd -n
  825     1 root     S     1960   0%   0% /usr/sbin/telnetd
  804     1 root     S     1784   0%   0% /sbin/agetty --noclear tty1 linux
   72     2 root     SW       0   0%   0% [mmcqd/2]
    6     2 root     SW       0   0%   0% [kworker/u2:0]
   52     2 root     SW       0   0%   0% [kworker/u2:1]
    3     2 root     SW       0   0%   0% [ksoftirqd/0]
   89     2 root     SW       0   0%   0% [kworker/0:2]
    7     2 root     SW       0   0%   0% [rcu_preempt]
   11     2 root     SW       0   0%   0% [kdevtmpfs]
   61     2 root     SW       0   0%   0% [mmcqd/0]
   73     2 root     SW<      0   0%   0% [kworker/0:1H]
    2     0 root     SW       0   0%   0% [kthreadd]
    4     2 root     SW       0   0%   0% [kworker/0:0]
    5     2 root     SW<      0   0%   0% [kworker/0:0H]
    8     2 root     SW       0   0%   0% [rcu_sched]
    9     2 root     SW       0   0%   0% [rcu_bh]
   10     2 root     SW       0   0%   0% [migration/0]
   12     2 root     SW<      0   0%   0% [netns]
   13     2 root     SW<      0   0%   0% [perf]

0 Subhajit Paul over 6 years ago in reply to Rajesh Kannan

TI__Expert 7015 points

Rajesh,

TI cannot support you on enabling Framebuffer based EGL.

Also, please elaborate on the statement : Performance is low.

Regards,

Subhajit

0 Rajesh Kannan over 6 years ago in reply to Subhajit Paul

Genius 4480 points

Hi,

As per your statement,

When a DRM framework is setup, it should expose an emulated FBdev which you should be able to find in /dev/fb0

I have enabled DRM setup, but I didn't see FBdev node in /dev/fb* .

What could be the way when a DRM framework setup, is should expose an emulated FB ?

Guide me to expose an FB ?

Regards,

Rajesh Kannan S

0 Rajesh Kannan over 6 years ago in reply to Rajesh Kannan

Genius 4480 points

Hello,

Whatever you said, just confirm me is it correct or not ? Our team is going to validate and close this ASAP !!!

Enabling drm support in kernel configuration, add those details to dts file like that you guide us to get proper support ??

Kindly reply back !

Regards,

Rajesh Kannan S

0 Subhajit Paul over 6 years ago in reply to Rajesh Kannan

TI__Expert 7015 points

I am marking this thread as resolved as this question has been answered in more than one thread

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Linux/TDA2EXEVM: Show the Qt Application in TDA2EX Platform