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authorDaniel Baluta <daniel.baluta@intel.com>2014-11-10 14:45:30 +0200
committerJonathan Cameron <jic23@kernel.org>2014-11-22 11:05:47 +0000
commit55aebeb926b6f93a540328e7ac770ef536b09b77 (patch)
tree2f672ff0a471b842d07af0e546547e16e2219ea0 /include/linux/iio
parent356ae946f9945997213b19279bc2e84bb61cc26a (diff)
downloadop-kernel-dev-55aebeb926b6f93a540328e7ac770ef536b09b77.zip
op-kernel-dev-55aebeb926b6f93a540328e7ac770ef536b09b77.tar.gz
iio: core: Introduce IIO_ACTIVITY channel
This channel will be used for exposing information about activity composite sensors. Activities supported so far: * running * jogging * walking * still THRESHOLD event is used to signal a change in the activity state. We associate a confidence interval for each activity expressed as a percentage from 0 to 100. * 0, means the sensor IS NOT reporting that activity. * 100, means the sensor IS reporting that activity. Users of this interface have two possible means to gather information about the ongoing activities. 1. Event based, via event file descriptor * sensor may report an event when ENTERING an activity or LEAVING an activity based on a threshold value. * drivers will wake up applications waiting data on the event fd 2. Polling, by reading the sysfs associated attribute files: * /sys/bus/iio/devices/iio:device0/in_activity_running_input expressed as percentage confidence value from 0 to 100. This will offer an interface for Android significant motion composite sensor defined here: http://source.android.com/devices/sensors/composite_sensors.html Activities listed above are supported by Freescale's MMA9553 sensor: http://freescale.com/files/sensors/doc/ref_manual/MMA9553LSWRM.pdf Signed-off-by: Irina Tirdea <irina.tirdea@intel.com> Signed-off-by: Daniel Baluta <daniel.baluta@intel.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Diffstat (limited to 'include/linux/iio')
-rw-r--r--include/linux/iio/types.h7
1 files changed, 6 insertions, 1 deletions
diff --git a/include/linux/iio/types.h b/include/linux/iio/types.h
index 4a2af8a..b3a241d 100644
--- a/include/linux/iio/types.h
+++ b/include/linux/iio/types.h
@@ -30,6 +30,7 @@ enum iio_chan_type {
IIO_CCT,
IIO_PRESSURE,
IIO_HUMIDITYRELATIVE,
+ IIO_ACTIVITY,
};
enum iio_modifier {
@@ -59,7 +60,11 @@ enum iio_modifier {
IIO_MOD_NORTH_MAGN,
IIO_MOD_NORTH_TRUE,
IIO_MOD_NORTH_MAGN_TILT_COMP,
- IIO_MOD_NORTH_TRUE_TILT_COMP
+ IIO_MOD_NORTH_TRUE_TILT_COMP,
+ IIO_MOD_RUNNING,
+ IIO_MOD_JOGGING,
+ IIO_MOD_WALKING,
+ IIO_MOD_STILL,
};
enum iio_event_type {
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