Panasonic TV1 and 1a keyset Inputs work partially with my Panasonic Viera:

The input menu on my TV has AV1-3, Component, PC/VGA, HDMI1-4, and TV.

With Pierogi, PC button works (both with the button and from the dropdown menu). S-Video button swtiches to AV3, which is where N900 plugs in. Composite button switches to AV1. All other buttons and dropdown menu choices don't seem to do anything.