Re: [RFC PATCH 7/7] drm/pci: Defer initialization of secondary graphics devices until switcheroo is ready

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On Mon, Aug 20, 2012 at 11:24:44AM -0500, Seth Forshee wrote:

> I'm not sure how we support both of these cases without doing something
> more like what I originally proposed, i.e. registering the LVDS
> connector even if it doesn't look like a panel is attached. I still
> honestly favor that approach, although it does come with its own set of
> challenges.
> 
> The only other option I can come up with is to reprobe LVDS after
> switcheroo and add the connector at that time. I haven't investigated
> this option in detail, but at first glance it looks like there are at
> least some places where DRM isn't prepared to cope with adding
> connectors after initialization.

Well, one option is to identify whether the hardware is switcheroo 
capable without the use of the switcheroo driver. It looks like we can 
do that in the majority of cases - Apple is the only special case I can 
see, and that one's a fairly easy workaround.

-- 
Matthew Garrett | mjg59@xxxxxxxxxxxxx
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