[Intel-gfx] [PATCH] Poll for HDMI disconnects.

[Daniel Vetter]

On Fri, Oct 12, 2012 at 8:40 PM, Stuart Abercrombie
<sabercrombie at chromium.org> wrote:
>> In the hotplug register, like on g4x. But that moved to to PCH_IIR on pch
>> platforms. I plan to rework the entire hotplug handling for 3.8, hence why
>> I haven't bothered to wire this up yet.
>
> You are saying that the HPD line state is available in the register
> called SDEIIR in the code?  The documentation only describes pulse
> detection bits in this register, not anything directly reflecting the
> line state.  The same is true of PCH_PORT_HOTPLUG/SHOTPLUG_CTL.
>
> Testing did not show these registers, or others in the same range,
> reflecting the HPD line state.
>
> Hence my question.

My docs here say that the SDE_ISR reg contains what we want - high
level irq bit when the hpd line is enabled. I admit, I haven't tested
this ...
-Daniel
-- 
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch