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iio: core: Introduce DISTANCE channel type

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Some devices export an estimation of the distance the user has covered
since the last reset.

One of this devices is Freescale's MMA9553L
(http://www.freescale.com/files/sensors/doc/ref_manual/MMA9553LSWRM.pdf)
that computes the distance based on the stride length and step rate.

Introduce a new channel type DISTANCE to export these values.

Signed-off-by: Irina Tirdea <irina.tirdea@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This commit is contained in:
Irina Tirdea
2015-01-11 21:10:08 +02:00
committed by Jonathan Cameron
parent 72c6664467
commit cc3c9eecae
3 changed files with 12 additions and 0 deletions
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include/linux/iio/types.h
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@@ -33,6 +33,7 @@ enum iio_chan_type {
IIO_ACTIVITY,
IIO_STEPS,
IIO_ENERGY,
IIO_DISTANCE,
};
enum iio_modifier {