On 11/01/15 19:10, Irina Tirdea wrote: > Some devices export the current speed value of the user. > > One of this devices is Freescale's MMA9553L > (http://www.freescale.com/files/sensors/doc/ref_manual/MMA9553LSWRM.pdf) > that computes the speed of the user based on the number of steps and > stride length. > > Introduce a new channel type VELOCITY and a modifier for the magniture or > norm of the velocity vector, IIO_MOD_ROOT_SUM_SQUARED_X_Y_Z. > > Signed-off-by: Irina Tirdea <[email protected]> Appied. > --- > Documentation/ABI/testing/sysfs-bus-iio | 10 ++++++++++ > drivers/iio/industrialio-core.c | 2 ++ > include/linux/iio/types.h | 2 ++ > 3 files changed, 14 insertions(+) > > diff --git a/Documentation/ABI/testing/sysfs-bus-iio > b/Documentation/ABI/testing/sysfs-bus-iio > index c627a9a..80b5efb1 100644 > --- a/Documentation/ABI/testing/sysfs-bus-iio > +++ b/Documentation/ABI/testing/sysfs-bus-iio > @@ -295,6 +295,7 @@ What: > /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_true_tilt_comp_scale > What: /sys/bus/iio/devices/iio:deviceX/in_pressureY_scale > What: /sys/bus/iio/devices/iio:deviceX/in_pressure_scale > What: > /sys/bus/iio/devices/iio:deviceX/in_humidityrelative_scale > +What: > /sys/bus/iio/devices/iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_scale > KernelVersion: 2.6.35 > Contact: [email protected] > Description: > @@ -1164,3 +1165,12 @@ Contact: [email protected] > Description: > This attribute is used to read the number of steps taken by the > user > since the last reboot while activated. > + > +What: /sys/.../iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_input > +What: /sys/.../iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_raw > +KernelVersion: 3.19 > +Contact: [email protected] > +Description: > + This attribute is used to read the current speed value of the > + user (which is the norm or magnitude of the velocity vector). > + Units after application of scale are m/s. > diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c > index 655755b..18a8ab9 100644 > --- a/drivers/iio/industrialio-core.c > +++ b/drivers/iio/industrialio-core.c > @@ -74,6 +74,7 @@ static const char * const iio_chan_type_name_spec[] = { > [IIO_STEPS] = "steps", > [IIO_ENERGY] = "energy", > [IIO_DISTANCE] = "distance", > + [IIO_VELOCITY] = "velocity", > }; > > static const char * const iio_modifier_names[] = { > @@ -99,6 +100,7 @@ static const char * const iio_modifier_names[] = { > [IIO_MOD_JOGGING] = "jogging", > [IIO_MOD_WALKING] = "walking", > [IIO_MOD_STILL] = "still", > + [IIO_MOD_ROOT_SUM_SQUARED_X_Y_Z] = "sqrt(x^2+y^2+z^2)", > }; > > /* relies on pairs of these shared then separate */ > diff --git a/include/linux/iio/types.h b/include/linux/iio/types.h > index a7de445..c3601c2 100644 > --- a/include/linux/iio/types.h > +++ b/include/linux/iio/types.h > @@ -34,6 +34,7 @@ enum iio_chan_type { > IIO_STEPS, > IIO_ENERGY, > IIO_DISTANCE, > + IIO_VELOCITY, > }; > > enum iio_modifier { > @@ -68,6 +69,7 @@ enum iio_modifier { > IIO_MOD_JOGGING, > IIO_MOD_WALKING, > IIO_MOD_STILL, > + IIO_MOD_ROOT_SUM_SQUARED_X_Y_Z, > }; > > enum iio_event_type { >
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