linux-kernel - Re: [GIT PULL] Linux Media vimc update for 6.20-rc1

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Message-ID: <e9098813-3b5a-47a1-b1a8-192040093541@kernel.org>
Date: Tue, 13 Jan 2026 10:19:25 +0100
From: Hans Verkuil <hverkuil+cisco@...nel.org>
To: Shuah Khan <skhan@...uxfoundation.org>,
 Mauro Carvalho Chehab <mchehab@...nel.org>
Cc: Kieran Bingham <kieran.bingham@...asonboard.com>,
 Hans Verkuil <hverkuil@...all.nl>, linux-kernel@...r.kernel.org,
 linux-media@...r.kernel.org, Pavan Bobba <opensource206@...il.com>,
 shuah <shuah@...nel.org>
Subject: Re: [GIT PULL] Linux Media vimc update for 6.20-rc1

Hi Shuah, Pavan,

On 08/01/2026 22:42, Shuah Khan wrote:
> Hi Mauro,
> 
> Please pull the vimc next update for Linux 6.20-rc1.
> 
> Adds
>      RGB/YUV input entity implementation
>      support for V4L2_FIELD_ALTERNATE in vimc-sensor
>      support for multiple RGB formats in vimc-debayer
>      support custom bytesperline values in vimc-capture
>      document RGB/YUV input entity
> 
> diff is attached.

Unfortunately these vimc changes cause regressions in the vimc test-media test.

This test is run in our CI to catch regressions, so it must always pass.

The test is in the v4l-utils git repository (https://git.linuxtv.org/v4l-utils.git/)
in the contrib/test directory. It's run as: 'sudo ./test-media vimc'.

It could be that these changes require changes in the vimc test itself.
In that case I need a patch for test-media fixing this. However, looking
at the failures I think that at least some of the issues are caused by these
patches.

Since this series adds a new entity, I think that test-media needs to be patched
anyway with a new test that tests this new entity as well.

Running the test-media vimc test results in:

Summary:

Total for vimc device /dev/media4: 8, Succeeded: 8, Failed: 0, Warnings: 0
Total for vimc device /dev/video13: 60, Succeeded: 49, Failed: 11, Warnings: 0
Total for vimc device /dev/video14: 60, Succeeded: 60, Failed: 0, Warnings: 0
Total for vimc device /dev/video15: 60, Succeeded: 49, Failed: 11, Warnings: 0
Total for vimc device /dev/v4l-subdev0: 54, Succeeded: 54, Failed: 0, Warnings: 0
Total for vimc device /dev/v4l-subdev1: 54, Succeeded: 54, Failed: 0, Warnings: 0
Total for vimc device /dev/v4l-subdev2: 61, Succeeded: 59, Failed: 2, Warnings: 0
Total for vimc device /dev/v4l-subdev3: 61, Succeeded: 59, Failed: 2, Warnings: 0
Total for vimc device /dev/v4l-subdev4: 54, Succeeded: 52, Failed: 2, Warnings: 0
Total for vimc device /dev/v4l-subdev5: 61, Succeeded: 61, Failed: 0, Warnings: 0
Total for vimc device /dev/v4l-subdev6: 47, Succeeded: 47, Failed: 0, Warnings: 0
Total for vimc device /dev/v4l-subdev7: 47, Succeeded: 47, Failed: 0, Warnings: 0
Grand Total for vimc device /dev/media4: 627, Succeeded: 599, Failed: 28, Warnings: 0

So I'm dropping this PR.

Regards,

	Hans

> 
> thanks,
> -- Shuah
> 
> ----------------------------------------------------------------
> 
> The following changes since commit 8f0b4cce4481fb22653697cced8d0d04027cb1e8:
> 
>    Linux 6.19-rc1 (2025-12-14 16:05:07 +1200)
> 
> are available in the Git repository at:
> 
>    git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux tags/linux-vimc-6.20-rc1
> 
> for you to fetch changes up to c3a017646b770b76f0f08c96aa74fbc4404ef674:
> 
>    docs: media: vimc: document RGB/YUV input entity (2025-12-15 12:43:25 -0700)
> 
> ----------------------------------------------------------------
> linux-vimc-6.20-rc1
> 
> Adds
>      RGB/YUV input entity implementation
>      support for V4L2_FIELD_ALTERNATE in vimc-sensor
>      support for multiple RGB formats in vimc-debayer
>      support custom bytesperline values in vimc-capture
>      document RGB/YUV input entity
> 
> ----------------------------------------------------------------
> Pavan Bobba (5):
>        media: vimc: add RGB/YUV input entity implementation
>        media: vimc: add support for V4L2_FIELD_ALTERNATE in vimc-sensor
>        media: vimc: debayer: add support for multiple RGB formats
>        media: vimc: capture: support custom bytesperline values
>        docs: media: vimc: document RGB/YUV input entity
> 
>   Documentation/admin-guide/media/vimc.rst       |  39 +++--
>   drivers/media/test-drivers/vimc/Makefile       |   3 +-
>   drivers/media/test-drivers/vimc/vimc-capture.c |  15 +-
>   drivers/media/test-drivers/vimc/vimc-common.h  |   1 +
>   drivers/media/test-drivers/vimc/vimc-core.c    |   3 +-
>   drivers/media/test-drivers/vimc/vimc-debayer.c | 113 ++++++++++---
>   drivers/media/test-drivers/vimc/vimc-input.c   | 210 +++++++++++++++++++++++++
>   drivers/media/test-drivers/vimc/vimc-sensor.c  |   9 +-
>   8 files changed, 352 insertions(+), 41 deletions(-)
>   create mode 100644 drivers/media/test-drivers/vimc/vimc-input.c
> 
> ----------------------------------------------------------------