[PATCH v3 2/2] drm/i915/gvt: Don't read ADPA_CRT_HOTPLUG_MONITOR from host

[Zhenyu Wang]

On 2017.06.28 02:03:16 +0800, Xiong Zhang wrote:
> When host connects a crt screen, linux guest will detect two
> screens: crt and dp. This is wrong as linux guest has only
> one dp.
> 
> In order to avoid guest get host crt screen, we should set
> ADPA_CRT_HOTPLUG_MONITOR to none. But MMIO_RO(PCH_ADPA) prevent
> from that. So MMIO_DH should be used instead of MMIO_RO.
> 
> v2: Clear its staus to none at initialize, so guest don't
>     get host crt.(Zhangyu)
> v3: SKL doesn't have this register, limit it to pre_skl.(xiong)
> 

pushed, thanks!

-- 
Open Source Technology Center, Intel ltd.

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