diff mbox series

[10/24] iio:event: Add timeout event info type

Message ID 20210207154623.433442-11-jic23@kernel.org (mailing list archive)
State New, archived
Headers show
Series staging:iio:cdc:ad7150: cleanup / fixup / graduate | expand

Commit Message

Jonathan Cameron Feb. 7, 2021, 3:46 p.m. UTC 
From: Jonathan Cameron <Jonathan.Cameron@huawei.com>

For adaptive threshold events, the current value is compared with a
(typically) low pass filtered version of the same signal that slowly
tracks large scale changes.  However, sometimes a step change can
result in a large lag before the low pass filtered version begins
to track the signal again.  Timeouts can be used to made an
instantaneous 'correction'.  Documentation of this attribute
is added in a later patch.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
---
 drivers/iio/industrialio-event.c | 1 +
 include/linux/iio/types.h        | 1 +
 2 files changed, 2 insertions(+)
diff mbox series

Patch

diff --git a/drivers/iio/industrialio-event.c b/drivers/iio/industrialio-event.c
index 7e532117ac55..ad01b4d84562 100644
--- a/drivers/iio/industrialio-event.c
+++ b/drivers/iio/industrialio-event.c
@@ -245,6 +245,7 @@  static const char * const iio_ev_info_text[] = {
 	[IIO_EV_INFO_PERIOD] = "period",
 	[IIO_EV_INFO_HIGH_PASS_FILTER_3DB] = "high_pass_filter_3db",
 	[IIO_EV_INFO_LOW_PASS_FILTER_3DB] = "low_pass_filter_3db",
+	[IIO_EV_INFO_TIMEOUT] = "timeout",
 };
 
 static enum iio_event_direction iio_ev_attr_dir(struct iio_dev_attr *attr)
diff --git a/include/linux/iio/types.h b/include/linux/iio/types.h
index 1e3ed6f55bca..f2e7c96e6e81 100644
--- a/include/linux/iio/types.h
+++ b/include/linux/iio/types.h
@@ -16,6 +16,7 @@  enum iio_event_info {
 	IIO_EV_INFO_PERIOD,
 	IIO_EV_INFO_HIGH_PASS_FILTER_3DB,
 	IIO_EV_INFO_LOW_PASS_FILTER_3DB,
+	IIO_EV_INFO_TIMEOUT,
 };
 
 #define IIO_VAL_INT 1