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iio: Add ABI documentation for proximity 

has been in use for a long time, but never documented
proximity is unit-less, except otherwise stated, see e.g.
the as3935 driver where it is meter

Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
hifive-unleashed-5.1
Peter Meerwald 2014-03-05 11:57:00 +00:00 committed by Jonathan Cameron
parent 34683a5c6e
commit 6c0690ecb6
1 changed files with 13 additions and 0 deletions
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13
Documentation/ABI/testing/sysfs-bus-iio
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@ -895,6 +895,19 @@ Description:
on-chip EEPROM. After power-up or chip reset the device will
automatically load the saved configuration.
What: /sys/.../iio:deviceX/in_proximity_raw
What: /sys/.../iio:deviceX/in_proximity_input
What: /sys/.../iio:deviceX/in_proximityY_raw
KernelVersion: 3.4
Contact: linux-iio@vger.kernel.org
Description:
Proximity measurement indicating that some
object is near the sensor, usually be observing
reflectivity of infrared or ultrasound emitted.
Often these sensors are unit less and as such conversion
to SI units is not possible. Where it is, the units should
be meters.
What: /sys/.../iio:deviceX/in_illuminanceY_input
What: /sys/.../iio:deviceX/in_illuminanceY_raw
What: /sys/.../iio:deviceX/in_illuminanceY_mean_raw