linux-kernel - Re: [PATCH 0/3] Add 12bit and 14bit luma-only formats

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Date:   Thu, 13 Jan 2022 10:15:48 +0100
From:   Hans Verkuil <hverkuil@...all.nl>
To:     Jean-Michel Hautbois <jeanmichel.hautbois@...asonboard.com>,
        linux-media@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     laurent.pinchart@...asonboard.com, mchehab@...nel.org,
        dave.stevenson@...pberrypi.com
Subject: Re: [PATCH 0/3] Add 12bit and 14bit luma-only formats

Hi Jean-Michel,

On 12/01/2022 17:10, Jean-Michel Hautbois wrote:
> Hello,
> 
> While working on adding the V4L2-PIX-FMT-Y12P and V4L2-PIX-FMT-Y14P
> formats, I noticed an issue in the way V4L2-PIX-FMT-Y10P is described.
> This series aims to solve it before adding Y12P and Y14P.
> 
> Those two formats are needed for the next-to-come bcm2835 unicam driver.
> 
> Jean-Michel Hautbois (3):
>   media: doc: pixfmt-yuv: Fix V4L2-PIX-FMT-Y10P format
>   media: v4l: Add V4L2-PIX-FMT-Y12P format
>   media: v4l: Add V4L2-PIX-FMT-Y14P format
> 
>  .../media/v4l/pixfmt-yuv-luma.rst             | 48 ++++++++++++++++++-
>  drivers/media/v4l2-core/v4l2-ioctl.c          |  2 +
>  include/uapi/linux/videodev2.h                |  2 +
>  3 files changed, 50 insertions(+), 2 deletions(-)
> 

I'll take the first patch, but it is better to add patches 2 and 3 to the unicam RFC
series. Adding pixelformats that are not used by any existing driver isn't a good idea
and I'd like to avoid that.

Regards,

	Hans