[Arm-netbook] Auto-discard notification

[lkcl luke]

mr namespace_collision, i'm forwarding this after it got discarded,
you have to subscribe in order to post.

l.

On Wed, Feb 29, 2012 at 10:00 AM,
<arm-netbook-bounces at lists.phcomp.co.uk> wrote:
> The attached message has been automatically discarded.
>
> ---------- Forwarded message ----------
> From: nil <namespace_collision at yahoo.com>
> To: arm-netbook at lists.phcomp.co.uk
> Cc:
> Date: Wed, 29 Feb 2012 01:46:44 -0800 (PST)
> Subject: Allwinner A10- Video Decode
> The media accelerator drivers live in /drivers/media/video/sun4i and /drivers/media/audio, both with fairly unhelpful "mmap some hardware into userland"-style interfaces. There's also a blitter in /drivers/char/sun4i_g2d that appears to belong to the same IP core or whatever ("F23"?)
>
> TV-out is supported by the display driver in /drivers/video/sun4i/disp - the hardware itself looks pretty capable, if the low-level gubbins are anything to go by (at least to the untrained eye - multihead, a scaler, colour space conversion, video post-processing, layers, sprites, colour keying, alpha blending, hardware cursor...) The driver does contain someone's OS abstraction layer, though, and doesn't expose more than the bare minimum to useful, mainline interfaces (i.e. fbdev.)
>
> There's some kind of special-cased video handling going on there, too; I think it's just hardware assist for deinterlacing and YUV input, but perhaps it's hooked up to the media accelerator somehow. Haven't seen anything that points conclusively towards a TV decoder being present on-chip.
>
> (aside: the script_parser stuff may not be devicetree, but it's definitely a cut above the usual hardcoded constants and throwaway board files.)
>
>