FYI: misc: visconti: Toshiba Visconti DSP accelerator driver sample

[Oded Gabbay]

On Fri, Aug 5, 2022 at 1:41 PM Yuji Ishikawa
<yuji2.ishikawa at toshiba.co.jp> wrote:
>
> Hello Odded
>
> This is a sample (wip) driver for a DSP found on Toshiba Visconti SoC.
> The DSP typically accepts some images, apply an algorithm on them and yields resulting one.
> Therefore (image-in, image-out), they say this driver should be classified to media driver category.
> However, it can handle various data format (wider than v4l2 officially supports)
> if userland provide firmware (=algorithm) for its own.
>
> Yes, this rough implementation is the first step only our staff could go.
> I'm not for sure whether we could carry out experiments earlier if we chose to use existing frameworks,
> instead of writing our own routine for handling DMA-BUFs and interrupts.
> I hope this post will help your case-study.
>
> Regards
>         Yuji Ishikawa
>
Thanks Yuji.

I've gone over the IOCTLs and they seem fairly straightforward. I
think that we will be able to accommodate at least part of them in the
common code of an accel subsystem.
Oded