[Intel-gfx] [PATCH 05/17] drm/i915/tv: Clear state sense detection for Cantiga

[Peter Clifton]

On Thu, 2011-04-21 at 16:36 -0700, Eric Anholt wrote:
> On Thu, 21 Apr 2011 22:18:20 +0100, Chris Wilson <chris at chris-wilson.co.uk> wrote:
> > From: Zhao Yakui <yakui.zhao at intel.com>
> > 
> > ... otherwise the TV type will be misdetected and cause spurious
> > connections.
> > 
> > This was originally applied as fb8b5a39b6310379d7b54c0c7113703a8eaf4a57
> > (drm/i915: Configure the TV sense state correctly on GM45 to make TV
> > detection reliable)
> > 
> > Eric: Shortly after applying this patch you requested it to be reverted,
> > d4b74bf07873da2e94219a7b67a334fc1c3ce649 (Revert "drm/i915: Configure
> > the TV sense state correctly on GM45 to make TV), but we have no clear
> > information just what is broken by this patch and how to resolve it.

This is an absolute must for my GM45, and I've been patching it back in
ever since it was dropped.

I had meant to follow up after having contacted the original patch
author - who claimed the patch was derived from an internally documented
errata or some such - and the requirements were contrary to the GM45
publicly released documentation.

The one vital testing step I still wasn't able to take is actually
hooking up the S-Video output of this laptop and making sure the patch
did not stop it detecting a connected TV. I don't actually own a TV, but
could get access to one.. if I had an S-Video cable I could do the test!

-- 
Peter Clifton

Electrical Engineering Division,
Engineering Department,
University of Cambridge,
9, JJ Thomson Avenue,
Cambridge
CB3 0FA

Tel: +44 (0)7729 980173 - (No signal in the lab!)
Tel: +44 (0)1223 748328 - (Shared lab phone, ask for me)
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