From: "Mylène Josserand" <mylene.josserand@bootlin.com>
To: peda@axentia.se, jic23@kernel.org, knaack.h@gmx.de,
lars@metafoo.de, pmeerw@pmeerw.net, robh+dt@kernel.org,
mark.rutland@arm.com
Cc: linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org,
devicetree@vger.kernel.org, thomas.petazzoni@bootlin.com,
mylene.josserand@bootlin.com
Subject: [PATCH v1 0/3] iio: afe: rescale: Add INFO_PROCESSED support
Date: Tue, 11 Jun 2019 11:56:56 +0200 [thread overview]
Message-ID: <20190611095659.29845-1-mylene.josserand@bootlin.com> (raw)
Hello everyone,
You will find a small series that add the support of processed values
for iio-rescale driver.
Thanks to that, it is possible to read processed values in sysfs instead
of getting only raw and scale values.
Here is an example for a 3v3 voltage reading:
# cat /sys/bus/iio/devices/iio\:device1/in_voltage0_scale
3.791015625
# cat /sys/bus/iio/devices/iio\:device1/in_voltage0_raw
879
# cat /sys/bus/iio/devices/iio\:device1/in_voltage0_input
3332
It is also possible to read directly the processed values using iio-hwmon
driver (see example in patch03):
# cat /sys/class/hwmon/hwmon0/in1_input
3328
I seperated my series in 3 patches:
- Patch01: Move the scale conversion into a function to prepare the
support of IIO_CHAN_INFO_PROCESSED.
- Patch02: Add the support of IIO_CHAN_INFO_PROCESSED.
- Patch03: Add an example of the use of hwmon and voltage-divider nodes
in device-tree.
If you have any feedbacks on it, I will be pleased to read them!
Best regards,
Mylène
Mylène Josserand (3):
iio: afe: rescale: Move scale conversion to new function
iio: afe: rescale: Add support of CHAN_INFO_PROCESSED
dt-bindings: iio: afe: Add hwmon example
.../bindings/iio/afe/voltage-divider.txt | 24 ++++++
drivers/iio/afe/iio-rescale.c | 96 ++++++++++++++++------
2 files changed, 96 insertions(+), 24 deletions(-)
--
2.11.0
next reply other threads:[~2019-06-11 9:57 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-11 9:56 Mylène Josserand [this message]
2019-06-11 9:56 ` [PATCH v1 1/3] iio: afe: rescale: Move scale conversion to new function Mylène Josserand
2019-06-11 11:03 ` Peter Rosin
2019-06-11 9:56 ` [PATCH v1 2/3] iio: afe: rescale: Add support of CHAN_INFO_PROCESSED Mylène Josserand
2019-06-11 9:56 ` [PATCH v1 3/3] dt-bindings: iio: afe: Add hwmon example Mylène Josserand
2019-06-11 11:14 ` Peter Rosin
2019-06-11 11:02 ` [PATCH v1 0/3] iio: afe: rescale: Add INFO_PROCESSED support Peter Rosin
2019-06-11 11:44 ` Jonathan Cameron
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