Linux/TMS320DM8148: Power Vr usage with Fb1 instead of Fb0 with Dm8148 and Qt.

Ammar

Part Number: TMS320DM8148

Tool/software: Linux

I am using latest Ezsdk with Dm8148, I have an application displaying stream on Fb0 and using qt displaying an overlay on fb1 using display option

of LinuxFb. I want to use powervr for qt overlay on fb1. How can i achieve that ?

I tried reordering the graphics layer so that fb0 can be placed on fb1 but only one layer is displayed.

over 6 years ago

0 Margarita Gashova over 6 years ago

TI__Guru* 80190 points

Hello,

If I understand your question right you could try:
echo 1,3/2/1/0 > /sys/devices/platform/vpss/display0/order

You could check this guide also:
processors.wiki.ti.com/.../DM814X_AM387X_VPSS_Video_Driver_User_Guide

BR
Margarita

0 Ammar over 6 years ago in reply to Margarita Gashova

Expert 2230 points

Hello Margarita,

I tried this approach but only one graphic layer was visible as fb0 will hide fb1, some how transparency was not changing for fb0 layer.
Secondly if there is a way to redirect powervr to fb1, it will be better and more appropriate approach.

Regards
Ammar Zafar

0 Margarita Gashova over 6 years ago in reply to Ammar

TI__Guru* 80190 points

Hello,

Please check this thread :
e2e.ti.com/.../426680

You could search in the e2e for similar question also.

BR
Margarita

0 Ammar over 6 years ago in reply to Margarita Gashova

Expert 2230 points

Hello,

The above mentioned thread has nothing to do with the issue as this is not an add on.
Secondly, i have already searched the related threads but have not found my answer . Kindly, if you can forward the request to
an expert i ll be grateful.

Regards ,
Ammar Zafar

0 Margarita Gashova over 6 years ago in reply to Ammar

TI__Guru* 80190 points

Hello,

Please check this link:
e2e.ti.com/.../660422
Have you checked this article also:
processors.wiki.ti.com/.../Qt_Tips

BR
Margarita

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Linux/TMS320DM8148: Power Vr usage with Fb1 instead of Fb0 with Dm8148 and Qt.