linux-kernel - [PATCH 0/3] Add driver for Nicera D3-323-AA PIR sensor

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Message-ID: <cover.1746802541.git.waqar.hameed@axis.com>
Date: Fri, 9 May 2025 17:03:02 +0200
From: Waqar Hameed <waqar.hameed@...s.com>
To: Jonathan Cameron <jic23@...nel.org>, Lars-Peter Clausen <lars@...afoo.de>,
	Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>
CC: <kernel@...s.com>, <linux-kernel@...r.kernel.org>,
	<linux-iio@...r.kernel.org>, <devicetree@...r.kernel.org>
Subject: [PATCH 0/3] Add driver for Nicera D3-323-AA PIR sensor

Nicera D3-323-AA is a PIR sensor for human detection. It has support for
raw data measurements and detection notification. The communication
protocol is custom made and therefore needs to be GPIO bit banged.

Previously, there has been an attempt to add a driver for this device
[1]. However, that driver was written for the wrong sub-system. `hwmon`
is clearly not a suitable framework for a proximity device.

In this series, we add a driver for support for event notification for
detections through IIO (the more appropriate sub-system!). The various
settings have been mapped to existing `sysfs` ABIs in the IIO framework.

The public datasheet [2] is quite sparse. A more detailed version can be
obtained through the company.

[1] https://lore.kernel.org/lkml/20241212042412.702044-2-Hermes.Zhang@axis.com/
[2] https://www.endrich.com/Datenbl%C3%A4tter/Sensoren/D3-323-AA_e.pdf

Waqar Hameed (3):
  dt-bindings: vendor-prefixes: Add Nicera
  dt-bindings: iio: proximity: Add Nicera D3-323-AA PIR sensor
  iio: Add driver for Nicera D3-323-AA PIR sensor

 .../iio/proximity/nicera,d3323aa.yaml         |  67 ++
 .../devicetree/bindings/vendor-prefixes.yaml  |   2 +
 drivers/iio/proximity/Kconfig                 |   9 +
 drivers/iio/proximity/Makefile                |   1 +
 drivers/iio/proximity/d3323aa.c               | 868 ++++++++++++++++++
 5 files changed, 947 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/iio/proximity/nicera,d3323aa.yaml
 create mode 100644 drivers/iio/proximity/d3323aa.c

base-commit: d76bb1ebb5587f66b0f8b8099bfbb44722bc08b3
-- 
2.39.5