[Intel-gfx] [PATCH] drm/i915/opregion: work around buggy firmware that provides 8+ output devices

[Matthew Garrett]

On Wed, Feb 19, 2014 at 03:31:29PM +0800, Aaron Lu wrote:

> DID2 is in system memory region and has some assigned value like 0x400
> when we read it. For this case it is easy since there is only one output
> device that is of type LVDS so we can match it to connector of type eDP
> or LVDS, suppose there is only one such connector. But for output
> devices' whose _ADR has the value of 0x301, 0x302, etc. I have no idea
> how to match them up to the connectors of that type as we can't be sure
> the probe order we have used in i915 driver is the same as BIOS'.

Non-standard _ADR values are assigend by the GPU vendor, so Intel should 
be able to provide you with the correct interpretations.

-- 
Matthew Garrett | mjg59 at srcf.ucam.org