linux-kernel - Re: [PATCH 0/3] media: vimc: Add support for GBR and BGR formats on source pad of debayer

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Message-ID: <CAAEAJfDGicyS9RGkLfPEBP9FCVHiu4tYsnq+BKPsez7pWSxXXQ@mail.gmail.com>
Date:   Sun, 9 Feb 2020 14:09:17 -0300
From:   Ezequiel Garcia <ezequiel@...guardiasur.com.ar>
To:     Nícolas F. R. A. Prado 
        <nfraprado@...tonmail.com>
Cc:     linux-media <linux-media@...r.kernel.org>,
        Helen Koike <helen.koike@...labora.com>,
        Shuah Khan <skhan@...uxfoundation.org>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Hans Verkuil <hverkuil@...all.nl>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        lkcamp@...ts.libreplanetbr.org
Subject: Re: [PATCH 0/3] media: vimc: Add support for GBR and BGR formats on
 source pad of debayer

On Sun, 2 Feb 2020 at 12:50, Nícolas F. R. A. Prado
<nfraprado@...tonmail.com> wrote:
>
> The objective of this series is to add support for GBR and BGR media bus formats
> for the source pad of debayer subdevices of the vimc driver.
>

Can you elaborate why is this needed, e.g. what use-case is this enabling,
or what is this fixing?

Thanks,
Ezequiel

> Since the GBR media bus code doesn't have a corresponding pixelformat, it needed
> to use the pixelformat of another bus code.
>
> The first patch makes it possible to have multiple media bus codes mapping to
> the same pixelformat.
>
> The second patch adds the GBR media bus code, using the RGB pixelformat.
>
> The third patch adds support for GBR and BGR media bus formats on the source
> pad of the debayer subdevice.
>
> This patch series passed all tests of v4l2-compliance:
> $ compliance_git -m /dev/media0
> v4l2-compliance SHA: c4a62f26c5c3ecd856ca10cf2f0d35d100283d7f, 64 bits, 64-bit time_t
>
> Grand Total for vimc device /dev/media0: 461, Succeeded: 461, Failed: 0, Warnings: 0
>
> Nícolas F. R. A. Prado (3):
>   media: vimc: Support multiple buscodes for each pixelformat
>   media: vimc: Add GBR media bus code
>   media: vimc: deb: Add support for GBR and BGR bus formats on source
>     pad
>
>  drivers/media/platform/vimc/vimc-common.c  | 68 +++++++++++++---------
>  drivers/media/platform/vimc/vimc-common.h  |  9 ++-
>  drivers/media/platform/vimc/vimc-debayer.c | 53 +++++++++++++----
>  drivers/media/platform/vimc/vimc-scaler.c  | 10 +++-
>  drivers/media/platform/vimc/vimc-sensor.c  |  6 +-
>  5 files changed, 102 insertions(+), 44 deletions(-)
>
> --
> 2.25.0
>
>