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/[email protected]/
[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