linux-kernel - [PATCH v3 00/12] media: uvcvideo: Add support for orientation and rotation.

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Message-Id: <20250926-uvc-orientation-v3-0-6dc2fa5b4220@chromium.org>
Date: Fri, 26 Sep 2025 13:11:24 +0000
From: Ricardo Ribalda <ribalda@...omium.org>
To: Hans de Goede <hansg@...nel.org>, 
 Laurent Pinchart <laurent.pinchart@...asonboard.com>, 
 Mauro Carvalho Chehab <mchehab@...nel.org>, 
 Sakari Ailus <sakari.ailus@...ux.intel.com>, 
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>, 
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, 
 Linus Walleij <linus.walleij@...aro.org>, 
 Bartosz Golaszewski <brgl@...ev.pl>, 
 "Rafael J. Wysocki" <rafael@...nel.org>, Len Brown <lenb@...nel.org>, 
 Robert Moore <robert.moore@...el.com>, Hans Verkuil <hverkuil@...nel.org>
Cc: linux-media@...r.kernel.org, linux-kernel@...r.kernel.org, 
 linux-usb@...r.kernel.org, devicetree@...r.kernel.org, 
 linux-gpio@...r.kernel.org, linux-acpi@...r.kernel.org, 
 acpica-devel@...ts.linux.dev, Ricardo Ribalda <ribalda@...omium.org>, 
 stable@...r.kernel.org
Subject: [PATCH v3 00/12] media: uvcvideo: Add support for orientation and
 rotation.

The ACPI has ways to annotate the location of a USB device. Wire that
annotation to a v4l2 control.

To support all possible devices, add a way to annotate USB devices on DT
as well. The original binding discussion happened here:
https://lore.kernel.org/linux-devicetree/20241212-usb-orientation-v1-1-0b69adf05f37@chromium.org/

The following patches are needed regardless if we finally add support
for orientation and rotation or not:

- media: uvcvideo: Always set default_value
- media: uvcvideo: Set a function for UVC_EXT_GPIO_UNIT

Signed-off-by: Ricardo Ribalda <ribalda@...omium.org>
---
Changes in v3:
- refactor dt bindings
- add media: uvcvideo: Use current_value for read-only controls
- get_(max|cur|def) = swentity_get_cur
- virtual_entity add codestyle
- Codestyle
- Fix xu get_info and get_len
- Drop ACPI_DEVICE_SWNODE_DEV_ROTATION
- Add missing select V4L2_FWNODE
- Link to v2: https://lore.kernel.org/r/20250605-uvc-orientation-v2-0-5710f9d030aa@chromium.org

Changes in v2:
- Add support for rotation
- Rename fwnode to swentity
- Remove the patch to move the gpio file
- Remove patches already in media-committers
- Change priority of data origins
- Patch mipi-disco
- Link to v1: https://lore.kernel.org/r/20250403-uvc-orientation-v1-0-1a0cc595a62d@chromium.org

---
Ricardo Ribalda (12):
      media: uvcvideo: Always set default_value
      media: uvcvideo: Set a function for UVC_EXT_GPIO_UNIT
      media: v4l: fwnode: Support ACPI's _PLD for v4l2_fwnode_device_parse
      ACPI: mipi-disco-img: Do not duplicate rotation info into swnodes
      media: ipu-bridge: Use v4l2_fwnode_device_parse helper
      media: ipu-bridge: Use v4l2_fwnode for unknown rotations
      dt-bindings: media: Add usb-camera-module
      media: uvcvideo: Add support for V4L2_CID_CAMERA_ORIENTATION
      media: uvcvideo: Fill ctrl->info.selector earlier
      media: uvcvideo: Add uvc_ctrl_query_entity helper
      media: uvcvideo: Use current_value for read-only controls
      media: uvcvideo: Add support for V4L2_CID_CAMERA_ROTATION

 .../bindings/media/usb-camera-module.yaml          |  46 +++++
 MAINTAINERS                                        |   1 +
 drivers/acpi/mipi-disco-img.c                      |  15 --
 drivers/media/pci/intel/Kconfig                    |   1 +
 drivers/media/pci/intel/ipu-bridge.c               |  58 +++---
 drivers/media/usb/uvc/Kconfig                      |   1 +
 drivers/media/usb/uvc/Makefile                     |   3 +-
 drivers/media/usb/uvc/uvc_ctrl.c                   | 201 +++++++++++++++------
 drivers/media/usb/uvc/uvc_driver.c                 |  22 ++-
 drivers/media/usb/uvc/uvc_entity.c                 |   3 +-
 drivers/media/usb/uvc/uvc_swentity.c               | 107 +++++++++++
 drivers/media/usb/uvc/uvcvideo.h                   |  22 +++
 drivers/media/v4l2-core/v4l2-fwnode.c              |  84 ++++++++-
 include/acpi/acpi_bus.h                            |   1 -
 include/linux/usb/uvc.h                            |   3 +
 15 files changed, 441 insertions(+), 127 deletions(-)
---
base-commit: afb100a5ea7a13d7e6937dcd3b36b19dc6cc9328
change-id: 20250403-uvc-orientation-5f7f19da5adb

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