Just as for headphones and microphone jacks, this patch adds reporting
of HDMI jack status through the input layer.

I considered making additional SND_JACK_* constants for HDMI and 
Displayport instead of going with SND_JACK_VIDEOOUT, but it didn't seem 
worth the additions, and breakage of compiling with old kernels, etc. 
Let me know if you think otherwise and I'll prepare a second patch for 
that.

-- 
David Henningsson, Canonical Ltd.
http://launchpad.net/~diwic