linux-kernel - Re: [linux-sunxi] Cedrus driver

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Message-ID: <20171116125310.yavjs7352nw2sm7r@flea>
Date:   Thu, 16 Nov 2017 13:53:10 +0100
From:   Maxime Ripard <maxime.ripard@...e-electrons.com>
To:     Giulio Benetti <giulio.benetti@...ronovasrl.com>
Cc:     Andreas Baierl <list@...reisrum.de>,
        linux-sunxi <linux-sunxi@...glegroups.com>,
        linux@...linux.org.uk, wens@...e.org, linux-kernel@...r.kernel.org,
        thomas@...sch.nl, linux-media@...r.kernel.org
Subject: Re: [linux-sunxi] Cedrus driver

On Thu, Nov 16, 2017 at 01:30:52PM +0100, Giulio Benetti wrote:
> > On Thu, Nov 16, 2017 at 11:37:30AM +0100, Giulio Benetti wrote:
> > > Il 16/11/2017 11:31, Andreas Baierl ha scritto:
> > > > Am 16.11.2017 um 11:13 schrieb Giulio Benetti:
> > > > > Hello,
> > > > > 
> > > > Hello,
> > > > > I'm wondering why cedrus
> > > > > https://github.com/FlorentRevest/linux-sunxi-cedrus has never been
> > > > > merged with linux-sunxi sunxi-next.
> > > > > 
> > > > Because it is not ready to be merged. It depends on the v4l2 request
> > > > API, which was not merged and which is re-worked atm.
> > > > Also, sunxi-cedrus itself is not in a finished state and is not as
> > > > feature-complete to be merged. Anyway it might be something for
> > > > staging... Has there been a [RFC] on the mailing list at all?
> > > 
> > > Where can I find a list of TODOs to get it ready to be merged?
> > 
> > Assuming that the request API is in, we'd need to:
> >    - Finish the MPEG4 support
> >    - Work on more useful codecs (H264 comes to my mind)
> >    - Implement the DRM planes support for the custom frame format
> >    - Implement the DRM planes support for scaling
> >    - Test it on more SoCs
> > 
> > Or something along those lines.
> 
> Lot of work to do

Well... If it was fast and easy it would have been done already :)

> > > > > I see it seems to be dead, no commit in 1 year.
> > > > 
> > > > Yes, because the author did this during an internship, which ended ...
> > > > Afaik nobody picked up his work yet.
> > 
> > That's not entirely true. Some work has been done by Thomas (in CC),
> > especially on the display engine side, but last time we talked his
> > work was not really upstreamable.
> > 
> > We will also resume that effort starting next march.
> 
> Is it possible a preview on a separate Reporitory to start working on now?
> Expecially to start porting everything done by FlorentRevest to mainline,
> admitted you've not already done.

I'm not sure what you're asking for. Florent's work *was* on mainline.

Maxime

-- 
Maxime Ripard, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com

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