linux-kernel - Re: [PATCH v3 0/3] Add Amlogic video decoder driver

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Date:   Mon, 1 Oct 2018 14:15:53 +0200
From:   Maxime Jourdan <mjourdan@...libre.com>
To:     Hans Verkuil <hverkuil@...all.nl>
Cc:     Mauro Carvalho Chehab <mchehab@...nel.org>,
        Kevin Hilman <khilman@...libre.com>,
        Jerome Brunet <jbrunet@...libre.com>,
        Neil Armstrong <narmstrong@...libre.com>,
        Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
        linux-media@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-amlogic@...ts.infradead.org
Subject: Re: [PATCH v3 0/3] Add Amlogic video decoder driver

Le lun. 1 oct. 2018 à 12:29, Hans Verkuil <hverkuil@...all.nl> a écrit :
>
> On 09/28/2018 04:28 PM, Maxime Jourdan wrote:
> > Hi everyone,
> >
> > This patch series adds support for the Amlogic video decoder,
> > as well as the corresponding dt bindings for GXBB/GXL/GXM chips.
> >
> > It features decoding for the following formats:
> > - MPEG 1
> > - MPEG 2
> >
> > The following formats will be added in future patches:
> > - MJPEG
> > - MPEG 4 (incl. Xvid, H.263)
> > - H.264
> > - HEVC (incl. 10-bit)
> >
> > The following formats' development has still not started, but they are
> > supported by the hardware:
> > - VC1
> > - VP9
> >
> > The code was made in such a way to allow easy inclusion of those formats
> > in the future.
> >
> > The decoder is single instance.
> >
> > Files:
> >  - vdec.c handles the V4L2 M2M logic
> >  - esparser.c manages the hardware bitstream parser
> >  - vdec_helpers.c provides helpers to DONE the dst buffers as well as
> >  various common code used by the codecs
> >  - vdec_1.c manages the VDEC_1 block of the vdec IP
> >  - codec_mpeg12.c enables decoding for MPEG 1/2.
> >  - vdec_platform.c links codec units with vdec units
> >  (e.g vdec_1 with codec_mpeg12) and lists all the available
> >  src/dst formats and requirements (max width/height, etc.),
> >  per compatible chip.
> >
> > Firmwares are necessary to run the vdec. They can currently be found at:
> > https://github.com/chewitt/meson-firmware
>
> Are you trying to get this into the linux-firmware repository?
>
> I believe that Mauro requires that before he will merge this driver.
>
> So I think this driver will be ready to be merged once v4 is posted,
> dt-bindings is Acked and the firmware is merged to the linux-firmware repo.

It was planned indeed to get the firmwares into linux-firmware, I'll
speed this up.

dt-bindings was reviewed by Rob but I forgot to add it in v3, I'll fix
that in v4.

Cheers,
Maxime

> Regards,
>
>         Hans