iio: core: Introduce IIO_CHAN_INFO_CALIBEMISSIVITY

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Contact-less IR temperature sensors measure the temperature of an object
by using its thermal radiation.  Surfaces with different emissivity
ratios emit different amounts of energy at the same temperature.

IIO_CHAN_INFO_CALIBEMISSIVITY allows the user to inform the sensor of the
emissivity of the object in front of it, in order to effectively measure
its temperature.

A device providing such setting is Melexis's MLX90614:
http://melexis.com/Assets/IR-sensor-thermometer-MLX90614-Datasheet-5152.aspx.

Signed-off-by: Vianney le Clément de Saint-Marcq <vianney.leclement@essensium.com>
Cc: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

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Vianney le Clément de Saint-Marcq 2015-03-30 10:34:58 +02:00 • committed by Jonathan Cameron

parent a25691c1f9

commit c8a8585431

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Documentation/ABI/testing/sysfs-bus-iio

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drivers/iio/industrialio-core.c

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include/linux/iio/iio.h

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