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authorIrina Tirdea <irina.tirdea@intel.com>2015-01-11 22:10:09 +0300
committerJonathan Cameron <jic23@kernel.org>2015-01-27 21:49:54 +0300
commit5a1a932981415661827f7edd9e99943a2a3b7b67 (patch)
tree3e08a87f80e1fa5dd60f543cd28d2244428182e5 /drivers/iio
parentcc3c9eecaed65b26ee0661e9e9491fd8d48e3907 (diff)
downloadlinux-5a1a932981415661827f7edd9e99943a2a3b7b67.tar.xz
iio: core: Introduce IIO_VELOCITY and IIO_MOD_ROOT_SUM_SQUARED_X_Y_Z
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 <irina.tirdea@intel.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Diffstat (limited to 'drivers/iio')
-rw-r--r--drivers/iio/industrialio-core.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c
index 655755b49ccd..18a8ab911aab 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 */