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]> --- Documentation/ABI/testing/sysfs-bus-iio | 10 ++++++++++ drivers/iio/industrialio-core.c | 1 + include/linux/iio/types.h | 1 + 3 files changed, 12 insertions(+) diff --git a/Documentation/ABI/testing/sysfs-bus-iio b/Documentation/ABI/testing/sysfs-bus-iio index 3311886..c627a9a 100644 --- a/Documentation/ABI/testing/sysfs-bus-iio +++ b/Documentation/ABI/testing/sysfs-bus-iio @@ -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: [email protected] +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: [email protected] diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c index 8d2c9ba..655755b 100644 --- a/drivers/iio/industrialio-core.c +++ b/drivers/iio/industrialio-core.c @@ -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[] = { diff --git a/include/linux/iio/types.h b/include/linux/iio/types.h index 26b8a1c..a7de445 100644 --- a/include/linux/iio/types.h +++ b/include/linux/iio/types.h @@ -33,6 +33,7 @@ enum iio_chan_type { IIO_ACTIVITY, IIO_STEPS, IIO_ENERGY, + IIO_DISTANCE, }; enum iio_modifier { -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
