| From: |
| Jinseob Kim <kimjinseob88-AT-gmail.com> |
| To: |
| Jonathan Cameron <jic23-AT-kernel.org>, Rob Herring <robh-AT-kernel.org>, Krzysztof Kozlowski <krzk+dt-AT-kernel.org>, Conor Dooley <conor+dt-AT-kernel.org> |
| 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> |
| Cc: |
| David Lechner <dlechner-AT-baylibre.com>, Nuno Sá <nuno.sa-AT-analog.com>, Andy Shevchenko <andy-AT-kernel.org>, Jonathan Corbet <corbet-AT-lwn.net>, Shuah Khan <skhan-AT-linuxfoundation.org>, linux-iio-AT-vger.kernel.org, devicetree-AT-vger.kernel.org, linux-doc-AT-vger.kernel.org, linux-kernel-AT-vger.kernel.org, Jinseob Kim <kimjinseob88-AT-gmail.com> |
| Archive-link: |
| Article |
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
