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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 <[email protected]>
Signed-off-by: Jonathan Cameron <[email protected]>
This commit is contained in:
Irina Tirdea 2015-01-11 21:10:08 +02:00 • committed by Jonathan Cameron
commit cc3c9eecae
3 changed files with 12 additions and 0 deletions
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1
drivers/iio/industrialio-core.c
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@ -73,6 +73,7 @@ static const char * const iio_chan_type_name_spec[] = {
[IIO_ACTIVITY] = "activity",
[IIO_STEPS] = "steps",
[IIO_ENERGY] = "energy",
[IIO_DISTANCE] = "distance",
};
static const char * const iio_modifier_names[] = {