[PATCH v2 4/4] iio: documentation: Document scd4x calibration use

From: Roan van Dijk
Date: Mon Sep 13 2021 - 04:02:15 EST


Add entries from Documentation/ABI/testing/sysfs-bus-iio-scd30
to Documentation/ABI/testing/sysfs-bus-iio. The attributes of the scd4x
and scd30 are common.

Remove Documentation/ABI/testing/sysfs-bus-iio-scd30.

Signed-off-by: Roan van Dijk <roan@xxxxxxxxxxx>
---
Documentation/ABI/testing/sysfs-bus-iio | 35 +++++++++++++++++++
Documentation/ABI/testing/sysfs-bus-iio-scd30 | 34 ------------------
2 files changed, 35 insertions(+), 34 deletions(-)
delete mode 100644 Documentation/ABI/testing/sysfs-bus-iio-scd30

diff --git a/Documentation/ABI/testing/sysfs-bus-iio b/Documentation/ABI/testing/sysfs-bus-iio
index 6ad47a67521c..56492c564f72 100644
--- a/Documentation/ABI/testing/sysfs-bus-iio
+++ b/Documentation/ABI/testing/sysfs-bus-iio
@@ -1957,3 +1957,38 @@ Description:
Specify the percent for light sensor relative to the channel
absolute value that a data field should change before an event
is generated. Units are a percentage of the prior reading.
+
+What: /sys/bus/iio/devices/iio:deviceX/calibration_auto_enable
+Date: June 2020
+KernelVersion: 5.8
+Contact: linux-iio@xxxxxxxxxxxxxxx
+Description:
+ Contaminants build-up in the measurement chamber or optical
+ elements deterioration leads to sensor drift.
+
+ One can compensate for sensor drift by using automatic self
+ calibration procedure (asc).
+
+ Writing 1 or 0 to this attribute will respectively activate or
+ deactivate asc.
+
+ Upon reading current asc status is returned.
+
+What: /sys/bus/iio/devices/iio:deviceX/calibration_forced_value
+Date: June 2020
+KernelVersion: 5.8
+Contact: linux-iio@xxxxxxxxxxxxxxx
+Description:
+ Contaminants build-up in the measurement chamber or optical
+ elements deterioration leads to sensor drift.
+
+ One can compensate for sensor drift by using forced
+ recalibration (frc). This is useful in case there's known
+ co2 reference available nearby the sensor.
+
+ Picking value from the range [400 1 2000] and writing it to the
+ sensor will set frc.
+
+ Upon reading current frc value is returned. Note that after
+ power cycling default value (i.e 400) is returned even though
+ internally sensor had recalibrated itself.
diff --git a/Documentation/ABI/testing/sysfs-bus-iio-scd30 b/Documentation/ABI/testing/sysfs-bus-iio-scd30
deleted file mode 100644
index b9712f390bec..000000000000
--- a/Documentation/ABI/testing/sysfs-bus-iio-scd30
+++ /dev/null
@@ -1,34 +0,0 @@
-What: /sys/bus/iio/devices/iio:deviceX/calibration_auto_enable
-Date: June 2020
-KernelVersion: 5.8
-Contact: linux-iio@xxxxxxxxxxxxxxx
-Description:
- Contaminants build-up in the measurement chamber or optical
- elements deterioration leads to sensor drift.
-
- One can compensate for sensor drift by using automatic self
- calibration procedure (asc).
-
- Writing 1 or 0 to this attribute will respectively activate or
- deactivate asc.
-
- Upon reading current asc status is returned.
-
-What: /sys/bus/iio/devices/iio:deviceX/calibration_forced_value
-Date: June 2020
-KernelVersion: 5.8
-Contact: linux-iio@xxxxxxxxxxxxxxx
-Description:
- Contaminants build-up in the measurement chamber or optical
- elements deterioration leads to sensor drift.
-
- One can compensate for sensor drift by using forced
- recalibration (frc). This is useful in case there's known
- co2 reference available nearby the sensor.
-
- Picking value from the range [400 1 2000] and writing it to the
- sensor will set frc.
-
- Upon reading current frc value is returned. Note that after
- power cycling default value (i.e 400) is returned even though
- internally sensor had recalibrated itself.
--
2.30.2