linux-kernel - [PATCH v6 0/4] media: uvcvideo: Introduce V4L2_META_FMT_UVC_MSXU_1

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Message-Id: <20250604-uvc-meta-v6-0-7141d48c322c@chromium.org>
Date: Wed, 04 Jun 2025 12:16:01 +0000
From: Ricardo Ribalda <ribalda@...omium.org>
To: Laurent Pinchart <laurent.pinchart@...asonboard.com>, 
 Hans de Goede <hdegoede@...hat.com>, 
 Mauro Carvalho Chehab <mchehab@...nel.org>, 
 Guennadi Liakhovetski <guennadi.liakhovetski@...el.com>, 
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: linux-media@...r.kernel.org, linux-kernel@...r.kernel.org, 
 linux-usb@...r.kernel.org, Ricardo Ribalda <ribalda@...omium.org>, 
 stable@...r.kernel.org, Hans de Goede <hansg@...nel.org>
Subject: [PATCH v6 0/4] media: uvcvideo: Introduce
 V4L2_META_FMT_UVC_MSXU_1_5 + other meta fixes

This series introduces a new metadata format for UVC cameras and adds a
couple of improvements to the UVC metadata handling.

The new metadata format can be enabled in runtime with quirks.

Signed-off-by: Ricardo Ribalda <ribalda@...omium.org>
---
Changes in v6 (Thanks Laurent):
- Fix typo in metafmt-uvc.rst
- Improve metafmt-uvc-msxu-1-5.rst
- uvc_meta_v4l2_try_format() block MSXU format unless the quirk is
  active
- Refactor uvc_enable_msxu
- Document uvc_meta_detect_msxu
- Rebase series
- Add R-b
- Link to v5: https://lore.kernel.org/r/20250404-uvc-meta-v5-0-f79974fc2d20@chromium.org

Changes in v5:
- Fix codestyle and kerneldoc warnings reported by media-ci
- Link to v4: https://lore.kernel.org/r/20250403-uvc-meta-v4-0-877aa6475975@chromium.org

Changes in v4:
- Rename format to V4L2_META_FMT_UVC_MSXU_1_5 (Thanks Mauro)
- Flag the new format with a quirk.
- Autodetect MSXU devices.
- Link to v3: https://lore.kernel.org/linux-media/20250313-uvc-metadata-v3-0-c467af869c60@chromium.org/

Changes in v3:
- Fix doc syntax errors.
- Link to v2: https://lore.kernel.org/r/20250306-uvc-metadata-v2-0-7e939857cad5@chromium.org

Changes in v2:
- Add metadata invalid fix
- Move doc note to a separate patch
- Introduce V4L2_META_FMT_UVC_CUSTOM (thanks HdG!).
- Link to v1: https://lore.kernel.org/r/20250226-uvc-metadata-v1-1-6cd6fe5ec2cb@chromium.org

---
Ricardo Ribalda (4):
      media: uvcvideo: Do not mark valid metadata as invalid
      media: Documentation: Add note about UVCH length field
      media: uvcvideo: Introduce V4L2_META_FMT_UVC_MSXU_1_5
      media: uvcvideo: Auto-set UVC_QUIRK_MSXU_META

 .../userspace-api/media/v4l/meta-formats.rst       |   1 +
 .../media/v4l/metafmt-uvc-msxu-1-5.rst             |  23 ++++
 .../userspace-api/media/v4l/metafmt-uvc.rst        |   4 +-
 MAINTAINERS                                        |   1 +
 drivers/media/usb/uvc/uvc_metadata.c               | 116 +++++++++++++++++++--
 drivers/media/usb/uvc/uvc_video.c                  |  12 +--
 drivers/media/usb/uvc/uvcvideo.h                   |   1 +
 drivers/media/v4l2-core/v4l2-ioctl.c               |   1 +
 include/linux/usb/uvc.h                            |   3 +
 include/uapi/linux/videodev2.h                     |   1 +
 10 files changed, 150 insertions(+), 13 deletions(-)
---
base-commit: 5e1ff2314797bf53636468a97719a8222deca9ae
change-id: 20250403-uvc-meta-e556773d12ae

Best regards,
-- 
Ricardo Ribalda <ribalda@...omium.org>