[Intel-gfx] [PATCH 1/4] drm/i915: Configure the TV sense state correctly on GM45 to make TV detection reliable

[Peter Clifton]

On Wed, 2010-04-21 at 11:09 -0400, Adam Jackson wrote:

> But I really don't see how, short of a really really bad hardware bug,
> turning a subsystem _off_ would make that subsystem work.

Not knowing how the HW works, I'm only guessing.. but the Intel driver
is using a polling based method to detect TV-out, not the state-change
interrupt based method.

It is (just) possible that the state-change detection logic is separate
to that used for polling the status, and the two are conflicting. Some
hardware guys at Intel will probably have to confirm this.


-- 
Peter Clifton

Electrical Engineering Division,
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