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@chromium.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@chromium.org>