HA + Legacy Samsung - D Series - Missing Sources

Hi,
I’m rather new to HA. I have a problem that I hope somebody can help me with.

I have a Samsung TV UN55D6420. This is a D series television from 2011. From what I can tell is using the Orsay OS. It is connected via ethernet to my home network.

I am running HASS.io on a Raspberry Pi.

Now HA has a built-in component for Samsung TVs, and once I allowed it in on the TV, it correctly discovered the TV using SSDP.

The component correctly switches between TV and HDMI1. And when it is turned on, the status reports properly. Similarly, when it turns off the status reports properly.

Now my problem, I use more sources than just TV and HDMI1. In particular, I use HDMI2 and HDMI3.

Is there a way to configure HA to add the sources so they can be selected from the Web UI and the tv will change sources?

Extra information my tv has the following ports open.
52235
52396
55000
55001

Any help would be most appreciated.

Best,
Kirk

As far as I can see in the docs you can only choose the sources TV and HDMI.