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| author | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2021-03-14 21:14:57 +0300 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2021-04-07 10:36:36 +0300 |
| commit | 45b77828b01cdf2af655e4edbc63646fc7e07b48 (patch) | |
| tree | 95bcd1163cadcd630fe01bb4e6bdc62130bbe1bb | |
| parent | d5723c679bb81123f9c038392ba2d4aab928ba32 (diff) | |
| download | linux-45b77828b01cdf2af655e4edbc63646fc7e07b48.tar.xz | |
iio:event: Add timeout event info type
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>
Reviewed-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Link: https://lore.kernel.org/r/20210314181511.531414-11-jic23@kernel.org
| -rw-r--r-- | drivers/iio/industrialio-event.c | 1 | ||||
| -rw-r--r-- | include/linux/iio/types.h | 1 |
2 files changed, 2 insertions, 0 deletions
diff --git a/drivers/iio/industrialio-event.c b/drivers/iio/industrialio-event.c index 1b3a15bc75fe..d0732eac0f0a 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 5aa7f66d4345..84b3f8175cc6 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 |