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Commit cc3c9eec authored by Irina Tirdea's avatar Irina Tirdea Committed by Jonathan Cameron
Browse files

iio: core: Introduce DISTANCE channel type 

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: default avatarIrina Tirdea <irina.tirdea@intel.com>
Signed-off-by: default avatarJonathan Cameron <jic23@kernel.org>
parent 72c66644

Documentation/ABI/testing/sysfs-bus-iio

+10 −0
Original line number Diff line number Diff line
@@ -283,6 +283,7 @@ What: /sys/bus/iio/devices/iio:deviceX/in_accel_scale 
What:		/sys/bus/iio/devices/iio:deviceX/in_accel_peak_scale

What:		/sys/bus/iio/devices/iio:deviceX/in_anglvel_scale

What:		/sys/bus/iio/devices/iio:deviceX/in_energy_scale

What:		/sys/bus/iio/devices/iio:deviceX/in_distance_scale

What:		/sys/bus/iio/devices/iio:deviceX/in_magn_scale

What:		/sys/bus/iio/devices/iio:deviceX/in_magn_x_scale

What:		/sys/bus/iio/devices/iio:deviceX/in_magn_y_scale
@@ -1059,6 +1060,15 @@ Description: 
		device (e.g.: human activity sensors report energy burnt by the

		user). Units after application of scale are Joules.



What:		/sys/.../iio:deviceX/in_distance_input

What:		/sys/.../iio:deviceX/in_distance_raw

KernelVersion:	3.20

Contact:	linux-iio@vger.kernel.org

Description:

		This attribute is used to read the distance covered by the user

		since the last reboot while activated. Units after application

		of scale are meters.



What:		/sys/bus/iio/devices/iio:deviceX/store_eeprom

KernelVersion:	3.4.0

Contact:	linux-iio@vger.kernel.org

drivers/iio/industrialio-core.c

+1 −0
Original line number Diff line number Diff line
@@ -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[] = {

include/linux/iio/types.h

+1 −0
Original line number Diff line number Diff line
@@ -33,6 +33,7 @@ enum iio_chan_type { 
	IIO_ACTIVITY,

	IIO_STEPS,

	IIO_ENERGY,

	IIO_DISTANCE,

};



enum iio_modifier {