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iio: core: Introduce IIO_CHAN_INFO_CALIBWEIGHT

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Some devices need the weight of the user to compute other
parameters. One of this devices is Freescale's MMA9553L
(http://www.freescale.com/files/sensors/doc/ref_manual/MMA9553LSWRM.pdf)
that needs the weight of the user to compute the number of calories burnt.

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 21:10:10 +02:00 committed by Jonathan Cameron
parent 5a1a932981
commit d37f6836fa
3 changed files with 9 additions and 0 deletions
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7
Documentation/ABI/testing/sysfs-bus-iio
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@ -351,6 +351,13 @@ Description:
to compute the stride length, distance, speed and activity
type.
What: /sys/bus/iio/devices/iio:deviceX/in_energy_calibweight
KernelVersion: 3.20
Contact: linux-iio@vger.kernel.org
Description:
Weight of the user (in kg). It is needed by some pedometers
to compute the calories burnt by the user.
What: /sys/bus/iio/devices/iio:deviceX/in_accel_scale_available
What: /sys/.../iio:deviceX/in_voltageX_scale_available
What: /sys/.../iio:deviceX/in_voltage-voltage_scale_available

1
drivers/iio/industrialio-core.c
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@ -125,6 +125,7 @@ static const char * const iio_chan_info_postfix[] = {
[IIO_CHAN_INFO_INT_TIME] = "integration_time",
[IIO_CHAN_INFO_ENABLE] = "en",
[IIO_CHAN_INFO_CALIBHEIGHT] = "calibheight",
[IIO_CHAN_INFO_CALIBWEIGHT] = "calibweight",
};
/**

1
include/linux/iio/iio.h
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@ -40,6 +40,7 @@ enum iio_chan_info_enum {
IIO_CHAN_INFO_INT_TIME,
IIO_CHAN_INFO_ENABLE,
IIO_CHAN_INFO_CALIBHEIGHT,
IIO_CHAN_INFO_CALIBWEIGHT,
};
enum iio_shared_by {