linux-kernel - [PATCH v5 0/2] Pinefeat cef168 lens control board driver

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Message-Id: <20251005133228.62704-1-asmirnou@pinefeat.co.uk>
Date: Sun,  5 Oct 2025 14:32:26 +0100
From: Aliaksandr Smirnou <asmirnou@...efeat.co.uk>
To: jacopo.mondi@...asonboard.com,
	hverkuil@...all.nl,
	mchehab@...nel.org,
	robh@...nel.org,
	krzk+dt@...nel.org,
	conor+dt@...nel.org
Cc: devicetree@...r.kernel.org,
	linux-media@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Aliaksandr Smirnou <asmirnou@...efeat.co.uk>
Subject: [PATCH v5 0/2] Pinefeat cef168 lens control board driver

This patch series adds support for the Pinefeat adapter, which interfaces
Canon EF and EF-S lenses to non-Canon camera bodies. The cef168 circuit
control board provides an I2C interface for electronic focus and aperture
control. The driver integrates with the V4L2 sub-device API.

For more information about the product, see:
https://github.com/pinefeat/cef168

Changes in v5:
 - rebased onto the latest master branch;

Changes in v4:
 - removed driver mention from the hardware documentation;
 - added named email in commit signed-off-by;
 - added select CRC8 in Kconfig;
 - removed header file;
 - moved variable declaration at the beginning of the function;
 - removed kerneldoc from structures;
 - removed control id check as the core handles this for us;
 - removed Power Management Runtime (pm_runtime_*) calls as redundant;
 - reserved v4l2 controls in linux header file;

Link to v4: https://lore.kernel.org/all/20250830111500.53169-1-asmirnou@pinefeat.co.uk/
Link to v3: https://lore.kernel.org/all/20250817130549.7766-1-support@pinefeat.co.uk/

Patches:
  dt-bindings: Pinefeat cef168 lens control board
  media: i2c: Pinefeat cef168 lens control board driver

 .../bindings/media/i2c/pinefeat,cef168.yaml   |  47 +++
 .../devicetree/bindings/vendor-prefixes.yaml  |   2 +
 MAINTAINERS                                   |   7 +
 drivers/media/i2c/Kconfig                     |   9 +
 drivers/media/i2c/Makefile                    |   1 +
 drivers/media/i2c/cef168.c                    | 331 ++++++++++++++++++
 include/uapi/linux/v4l2-controls.h            |   6 +
 7 files changed, 403 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/media/i2c/pinefeat,cef168.yaml
 create mode 100644 drivers/media/i2c/cef168.c


base-commit: 6093a688a07da07808f0122f9aa2a3eed250d853
-- 
2.34.1