Re: [PATCH] [MEDIA] Add support for TW686[4589]-based frame grabbers.

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On 6 July 2015 at 11:31, Ezequiel Garcia <ezequiel@xxxxxxxxxxxxxxxxxxxx> wrote:
> Hi Krzysztof,
>
> First of all: thanks a lot for the good work!
> The driver looks very clean and promising.
>
> I've been playing with it a lot and have quite a bit
> of feedback.
>
> First of all, I've noticed you only supported TOP, BOTTOM
> and SEQUENTIAL fields. Is there no way to get an interlaced
> frame out of the driver?
>

Answering my own question, Krzysztof already replied about
this on another thread:

http://www.spinics.net/lists/linux-media/msg91470.html

Quoting him:

""
These (tw686x) chips aren't ideal - but they work.
For example, in DMA SG mode, they can't produce a single continuous
interlaced frame in memory - they can only make two separate fields.
A limitation of their DMA engine, since in non-SG mode they can make
(pseudo)-progressive frames.
""

-- 
Ezequiel García, VanguardiaSur
www.vanguardiasur.com.ar
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