[PATCH] drm/radeon/kms: don't enable underscan with interlaced modes

[Alex Deucher]

2010/9/21 Marius Gröger <marius.groeger at googlemail.com>:
> On 10.09.2010 17:20 Alex Deucher wrote:
>>
>> The scaler doesn't appear to work with interlaced modes as you've
>> noticed; I don't off hand know whether it can be made to or not.
>> Unfortunately, I won't have time to dig into this more for a while.
>
> Is there public documentation available wrt this matter? www.x.org/docs/AMD/
> appears to focus on 3D stuff primarily...
>

Not at the moment, however, you could implement underscan using the 3D
engine to do the scaling rather than the display scalers.  I think you
could even do it with randr crtc transforms (which use the 3d engine).

Alex

> Regards,
> Marius
>