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iio: introduce mag_referenced

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Some accelerometers that support activity and inactivity
events also support a referenced mode, in which the
gravitational acceleration is taken as a point of
reference before comparing the acceleration to the
specified activity and inactivity magnitude.

For example, in the case of the ADXL367, for activity
detection, the formula is:

abs(acceleration - reference) > magnitude

Add a new event type that makes this behavior clear.

Signed-off-by: Cosmin Tanislav <cosmin.tanislav@analog.com>
Link: https://lore.kernel.org/r/20220214073810.781016-2-cosmin.tanislav@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Cosmin Tanislav 2022-02-14 09:38:06 +02:00 committed by Jonathan Cameron
parent b38da7feef
commit a1a5cfe70c
3 changed files with 3 additions and 0 deletions
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1
drivers/iio/industrialio-event.c
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@ -230,6 +230,7 @@ static const char * const iio_ev_type_text[] = {
[IIO_EV_TYPE_THRESH_ADAPTIVE] = "thresh_adaptive",
[IIO_EV_TYPE_MAG_ADAPTIVE] = "mag_adaptive",
[IIO_EV_TYPE_CHANGE] = "change",
[IIO_EV_TYPE_MAG_REFERENCED] = "mag_referenced",
};
static const char * const iio_ev_dir_text[] = {

1
include/uapi/linux/iio/types.h
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@ -104,6 +104,7 @@ enum iio_event_type {
IIO_EV_TYPE_THRESH_ADAPTIVE,
IIO_EV_TYPE_MAG_ADAPTIVE,
IIO_EV_TYPE_CHANGE,
IIO_EV_TYPE_MAG_REFERENCED,
};
enum iio_event_direction {

1
tools/iio/iio_event_monitor.c
View File

@ -68,6 +68,7 @@ static const char * const iio_ev_type_text[] = {
[IIO_EV_TYPE_THRESH_ADAPTIVE] = "thresh_adaptive",
[IIO_EV_TYPE_MAG_ADAPTIVE] = "mag_adaptive",
[IIO_EV_TYPE_CHANGE] = "change",
[IIO_EV_TYPE_MAG_REFERENCED] = "mag_referenced",
};
static const char * const iio_ev_dir_text[] = {