linux-kernel - [PATCH v2 0/2] iio: chemical: Add support for sgp40 gas sensor

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Message-ID: <20210804154526.GA3207@arbad>
Date:   Wed, 4 Aug 2021 17:45:28 +0200
From:   Andreas Klinger <ak@...klinger.de>
To:     devicetree@...r.kernel.org, linux-iio@...r.kernel.org,
        Rob Herring <robh+dt@...nel.org>,
        Jonathan Cameron <jic23@...nel.org>
Cc:     Jonathan Cameron <Jonathan.Cameron@...wei.com>,
        Jiri Kosina <trivial@...nel.org>,
        Guenter Roeck <linux@...ck-us.net>,
        Chris Packham <chris.packham@...iedtelesis.co.nz>,
        Slawomir Stepien <sst@...zta.fm>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Vadim Pasternak <vadimp@...dia.com>,
        Alexandru Ardelean <alexandru.ardelean@...log.com>,
        linux-kernel@...r.kernel.org, Lars-Peter Clausen <lars@...afoo.de>,
        Tomasz Duszynski <tomasz.duszynski@...akon.com>
Subject: [PATCH v2 0/2] iio: chemical: Add support for sgp40 gas sensor

This patch set adds support for sensirion sgp40 gas sensor.

Many thanks for the in-depth reviews, especially of Jonathan who triggered
some important improvements for v2:
- provide more precision for voc value; this in turn triggered the folling
  point:
- rework of e^x calculation with an optimization on the interesting range
  between e^(-6) and e^6
- restructure use of endian types
- use __packed structures for sent telegrams
- optimize usage of mutex
- optimize switch-cases
- replace attributes by read_raw() and write_raw() values
- add documentation in Documentation/ABI/testing/sysfs-bus-iio-sgp40 as
  well as in the source code

Andreas Klinger (2):
  dt-bindings: iio: chemical: Add trivial DT binding for sgp40
  iio: chemical: Add driver support for sgp40

 .../ABI/testing/sysfs-bus-iio-chemical-sgp40  |  31 ++
 .../devicetree/bindings/trivial-devices.yaml  |   2 +
 MAINTAINERS                                   |   6 +
 drivers/iio/chemical/Kconfig                  |  11 +
 drivers/iio/chemical/Makefile                 |   1 +
 drivers/iio/chemical/sgp40.c                  | 372 ++++++++++++++++++
 6 files changed, 423 insertions(+)
 create mode 100644 Documentation/ABI/testing/sysfs-bus-iio-chemical-sgp40
 create mode 100644 drivers/iio/chemical/sgp40.c

-- 
2.20.1