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Tue, 16 Jun 2026 00:23:09 -0700 (PDT) Received: from DESKTOP-G3E0OSP.localdomain ([112.172.255.242]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2c42f1f1014sm123513435ad.16.2026.06.16.00.23.06 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 16 Jun 2026 00:23:09 -0700 (PDT) From: Jinseob Kim To: Jonathan Cameron , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: David Lechner , =?UTF-8?q?Nuno=20S=C3=A1?= , Andy Shevchenko , Jonathan Corbet , Shuah Khan , linux-iio@vger.kernel.org, devicetree@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, Jinseob Kim Subject: [PATCH RFC v5 0/6] iio: add Open Sensor Fusion IIO driver Date: Tue, 16 Jun 2026 16:22:36 +0900 Message-ID: <20260616072242.3942-1-kimjinseob88@gmail.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-doc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Open Sensor Fusion is a sensor aggregation hub interface. The Linux IIO driver receives OSF protocol frames from a serdev-attached device, discovers supported sensor streams from capability reports, and exposes the supported raw sensor data through IIO devices. The initial driver supports protocol major version 0 and the receive path for accelerometer, gyroscope, magnetometer, and temperature samples. The current wire magic is OSF0, but OSF0 is a wire-format detail and not the Linux driver identity. Protocol compatibility is carried by the protocol_major and protocol_minor fields in the fixed OSF frame header. This is still RFC because the driver-facing OSF protocol subset, the compatible binding, and future protocol compatibility rules are being reviewed. Runtime testing was done with an OSF GREEN prototype connected to a Raspberry Pi over UART. The driver registered osf-accel, osf-gyro, osf-magn, and osf-temp IIO devices. Direct raw reads and software kfifo buffer reads were tested. Changes since v4: - Regenerated the series as a full standalone replacement series from a clean upstream base. - Removed previous-version add/delete churn from the generated series. - Clarified OSF0, protocol_major, and protocol_minor compatibility handling. - Added required vcc-supply support to the binding. - Added probe-time regulator enablement with devm_regulator_get_enable(). - Added the opensensorfusion vendor prefix. - Fixed checkpatch cleanup issues in commit messages and driver style. Jinseob Kim (6): dt-bindings: iio: add Open Sensor Fusion device Documentation: iio: add Open Sensor Fusion driver overview iio: osf: add protocol decoding iio: osf: add stream parser iio: osf: add UART transport iio: osf: register IIO devices from capabilities .../bindings/iio/opensensorfusion,osf.yaml | 59 ++++ .../devicetree/bindings/vendor-prefixes.yaml | 2 + Documentation/iio/index.rst | 1 + Documentation/iio/open-sensor-fusion.rst | 71 ++++ MAINTAINERS | 13 + drivers/iio/Kconfig | 1 + drivers/iio/Makefile | 1 + drivers/iio/opensensorfusion/Kconfig | 14 + drivers/iio/opensensorfusion/Makefile | 6 + drivers/iio/opensensorfusion/osf_core.c | 306 ++++++++++++++++++ drivers/iio/opensensorfusion/osf_core.h | 70 ++++ drivers/iio/opensensorfusion/osf_iio.c | 275 ++++++++++++++++ drivers/iio/opensensorfusion/osf_iio.h | 22 ++ drivers/iio/opensensorfusion/osf_protocol.c | 249 ++++++++++++++ drivers/iio/opensensorfusion/osf_protocol.h | 97 ++++++ drivers/iio/opensensorfusion/osf_serdev.c | 117 +++++++ drivers/iio/opensensorfusion/osf_stream.c | 187 +++++++++++ drivers/iio/opensensorfusion/osf_stream.h | 31 ++ 18 files changed, 1522 insertions(+) create mode 100644 Documentation/devicetree/bindings/iio/opensensorfusion,osf.yaml create mode 100644 Documentation/iio/open-sensor-fusion.rst create mode 100644 drivers/iio/opensensorfusion/Kconfig create mode 100644 drivers/iio/opensensorfusion/Makefile create mode 100644 drivers/iio/opensensorfusion/osf_core.c create mode 100644 drivers/iio/opensensorfusion/osf_core.h create mode 100644 drivers/iio/opensensorfusion/osf_iio.c create mode 100644 drivers/iio/opensensorfusion/osf_iio.h create mode 100644 drivers/iio/opensensorfusion/osf_protocol.c create mode 100644 drivers/iio/opensensorfusion/osf_protocol.h create mode 100644 drivers/iio/opensensorfusion/osf_serdev.c create mode 100644 drivers/iio/opensensorfusion/osf_stream.c create mode 100644 drivers/iio/opensensorfusion/osf_stream.h -- 2.43.0