Weston clone mode on i.MX8MPlus

[#1]

This post shows a new feature (weston_clone_mode) that many customers need before in i.MX8MPlus. 

The demo works on Linux BSP L5.10.72_2.2.0 and weston branch weston-imx-9.0.

The detailed introduction, running steps and test result are shown in the attached PPT.

Default Extend Mode Pipeline:

Clone Mode Pipeline:

The DSI buffers which as the clone source in the pipeline can also be changed to HDMI or LVDS buffers.

Running Steps:

• git apply  clone_difResolution.diff
• source /opt/fsl-imx-xwayland/5.10-hardknott/environment-setup-cortexa53-crypto-poky-linux
• meson build/ --prefix=/usr -Ddoc=false -Dbackend-drm-screencast-vaapi=false -Dcolor-management-lcms=false -Dcolor-management-colord=false -Dpipewire=false -Dbackend-x11=false -Dbackend-fbdev=false -Dxwayland=true -Drenderer-g2d=true
• DESTDIR=./opt/weston ninja -C build/ install
• tar -cvf weston_usr.tar build/opt/weston/usr/*
• copy the weston_usr.tar to your evk board
• systemctl stop Weston
• tar -xvf weston_usr.tar
• cp -r  build/opt/weston/* / & sync
• Adding “clone-mode=1”, “clone-connector-id=41” to your /etc/xdg/weston/weston.ini “core” section like picture (1). You can also add “cloneoutput” section like picture (2)  If you decides to use other modes of your screen.
• systemctl restart Weston
• 41 or 45 in the pictures are the connector id of the corresponding screens. You can use modetest –M imx-drm to see the connector id.

Test Results:

Three displays:

Two Displays:

 Reference Link

 i.MX8MPlus :https://www.nxp.com/design/design-center/development-boards/i-mx-evaluation-and-development-boards/e... 

weston: https://github.com/nxp-imx/weston-imx 

weston doc: https://wayland.pages.freedesktop.org/weston/ 

HPD update

Please update the patch to clone_difResolution_add_HPD.diff which supports HPD feature.

Notion: pleas add force-on=true to the output you use as main screen. For example.

[jack_huang1]

Dear，

        In the previous version, the hot swap function was not supported. When can the updated version be released? Thank you!

        Best Regards！

        Jack

[XavierCLMP]

Hi,

We use Yocto recipe for IMX8MPLUS with kernel 6.1.36 from our seller. It's embedded with weston-imx-11.

Is it possible to use an adapted patch to have the same functionality?

I tried to apply the patch on files, so far most conflicts can be fixed, still it remains drm.c patch functions that no longer exists. (drm create heads related)

Is there a weston-imx-11 version for this clone mode? As many customers we need this for our industrial integration of IMX8.

Thanks.

Regards.

[inly_huang]

Hi, @XavierCLMP 

          No such version for now. I will try to make one in a few weeks.  Will let you know when it finished.

Thanks

[XavierCLMP]

Hi @inly_huang ,

It would be great.

Thanks.

[Krishd]

Hi, @inly_huang 

Why was the clone mode patch not added as a feature in weston-imx-11? Why does weston-imx-11 still need to be patched to have the clone mode?

Thanks for your time.

[inly_huang]

Hi, @Krishd 

         This feature is now only work for imx8mp where the display controllers are different.

Thanks