[Intel-gfx] [PATCH 3/4] drm/i915: use ACPI LID status for LVDS ->detect hook

[Jesse Barnes]

On Wed, 15 Jul 2009 23:55:58 +0100
Matthew Garrett <mjg59 at srcf.ucam.org> wrote:

> On Wed, Jul 15, 2009 at 03:11:25PM -0700, Jesse Barnes wrote:
> > We can't load or hotplug detect LVDS like we can other outputs, but
> > if there's a lid device present we can use it as a proxy.  This
> > allows the LFP state to be determined at ->detect time, making
> > configurations requiring manual intervention today "just work"
> > assuming the lid device status is correct.
> 
> I'm a bit unhappy with this appearing to be generic functionality but 
> ending up implemented in the driver rather than in the KMS core. If
> this is going in then can we at least document this behaviour and
> that other KMS drivers are expected to implement it?

Well, we don't really have generic LVDS helpers where we could put
this, but yeah we can document this as preferred for all LVDS outputs.

-- 
Jesse Barnes, Intel Open Source Technology Center