linux-kernel - [PATCH 0/3] iio: add unit converter

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Date:   Mon, 19 Mar 2018 18:02:43 +0100
From:   Peter Rosin <peda@...ntia.se>
To:     linux-kernel@...r.kernel.org
Cc:     Peter Rosin <peda@...ntia.se>, Jonathan Cameron <jic23@...nel.org>,
        Hartmut Knaack <knaack.h@....de>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Peter Meerwald-Stadler <pmeerw@...erw.net>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        "David S. Miller" <davem@...emloft.net>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Randy Dunlap <rdunlap@...radead.org>,
        linux-iio@...r.kernel.org, devicetree@...r.kernel.org
Subject: [PATCH 0/3] iio: add unit converter

Hi!

This moves the iio-mux driver to a new category, since I think
it will be the single driver in that category forever, and now
I'm adding a new driver that is somewhat similar in nature...

But that rename is not very interesting, it's just reshuffling.
It's the new driver that I need. Specifically, I need to allow
linear scaling and modification of the type of an io-channel.
I don't know exactly how that is accomplished in the best way,
but this is what I came up with.

The use cases are an ADC hooked up to measure a "big" voltage by
looking at the midpoint of a voltage divider, and an ADC used
to measure the current by looking at the voltage over a resistor.

Comments?

Cheers,
Peter

Peter Rosin (3):
  iio: rename the multiplexer category to wrapper
  dt-bindings: iio: wrapper: add io-channel-unit-converter
  iio: wrapper: unit-converter: new driver

 .../{multiplexer => wrapper}/io-channel-mux.txt    |   0
 .../iio/wrapper/io-channel-unit-converter.txt      |  84 +++++++
 MAINTAINERS                                        |  11 +-
 drivers/iio/Kconfig                                |   2 +-
 drivers/iio/Makefile                               |   2 +-
 drivers/iio/multiplexer/Makefile                   |   6 -
 drivers/iio/{multiplexer => wrapper}/Kconfig       |  13 +-
 drivers/iio/wrapper/Makefile                       |   7 +
 drivers/iio/{multiplexer => wrapper}/iio-mux.c     |   0
 drivers/iio/wrapper/iio-unit-converter.c           | 268 +++++++++++++++++++++
 10 files changed, 381 insertions(+), 12 deletions(-)
 rename Documentation/devicetree/bindings/iio/{multiplexer => wrapper}/io-channel-mux.txt (100%)
 create mode 100644 Documentation/devicetree/bindings/iio/wrapper/io-channel-unit-converter.txt
 delete mode 100644 drivers/iio/multiplexer/Makefile
 rename drivers/iio/{multiplexer => wrapper}/Kconfig (53%)
 create mode 100644 drivers/iio/wrapper/Makefile
 rename drivers/iio/{multiplexer => wrapper}/iio-mux.c (100%)
 create mode 100644 drivers/iio/wrapper/iio-unit-converter.c

-- 
2.11.0