[PATCH v2 5/7] iio: core: Add IIO_COVERAGE_PERCENT channel type

[Liviu Stan]

Add a new channel type for sensors that report fractional coverage as
a percentage. The first user is the ADT7604 leak detector, where the
value represents the portion of the sensing element that is wetted.

Signed-off-by: Liviu Stan <liviu.stan@xxxxxxxxxx>
---
Changes in v2:
- New patch.

 Documentation/ABI/testing/sysfs-bus-iio | 10 ++++++++++
 drivers/iio/industrialio-core.c         |  1 +
 include/uapi/linux/iio/types.h          |  1 +
 tools/iio/iio_event_monitor.c           |  1 +
 4 files changed, 13 insertions(+)

diff --git a/Documentation/ABI/testing/sysfs-bus-iio b/Documentation/ABI/testing/sysfs-bus-iio
index 925a33fd309a..0570e8b8f5e5 100644
--- a/Documentation/ABI/testing/sysfs-bus-iio
+++ b/Documentation/ABI/testing/sysfs-bus-iio
@@ -1980,6 +1980,16 @@ Description:
 		Raw (unscaled no offset etc.) resistance reading.
 		Units after application of scale and offset are ohms.
 
+What:		/sys/bus/iio/devices/iio:deviceX/in_coveragepercentX_raw
+KernelVersion:	6.15
+Contact:	linux-iio@xxxxxxxxxxxxxxx
+Description:
+		Raw (unscaled no offset etc.) coverage reading. Used for sensors
+		that report fractional coverage as a percentage, such as leak
+		detectors where the value represents what portion of the sensing
+		element is wetted. Units after application of scale and offset are
+		percent.
+
 What:		/sys/bus/iio/devices/iio:deviceX/heater_enable
 KernelVersion:	4.1.0
 Contact:	linux-iio@xxxxxxxxxxxxxxx
diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c
index bd6f4f9f4533..ee8ffa2cfbc5 100644
--- a/drivers/iio/industrialio-core.c
+++ b/drivers/iio/industrialio-core.c
@@ -98,6 +98,7 @@ static const char * const iio_chan_type_name_spec[] = {
 	[IIO_CHROMATICITY] = "chromaticity",
 	[IIO_ATTENTION] = "attention",
 	[IIO_ALTCURRENT] = "altcurrent",
+	[IIO_COVERAGE_PERCENT] = "coveragepercent",
 };
 
 static const char * const iio_modifier_names[] = {
diff --git a/include/uapi/linux/iio/types.h b/include/uapi/linux/iio/types.h
index d7c2bb223651..39830dc0cfb1 100644
--- a/include/uapi/linux/iio/types.h
+++ b/include/uapi/linux/iio/types.h
@@ -53,6 +53,7 @@ enum iio_chan_type {
 	IIO_CHROMATICITY,
 	IIO_ATTENTION,
 	IIO_ALTCURRENT,
+	IIO_COVERAGE_PERCENT,
 };
 
 enum iio_modifier {
diff --git a/tools/iio/iio_event_monitor.c b/tools/iio/iio_event_monitor.c
index df6c43d7738d..3339be7fe32c 100644
--- a/tools/iio/iio_event_monitor.c
+++ b/tools/iio/iio_event_monitor.c
@@ -65,6 +65,7 @@ static const char * const iio_chan_type_name_spec[] = {
 	[IIO_CHROMATICITY] = "chromaticity",
 	[IIO_ATTENTION] = "attention",
 	[IIO_ALTCURRENT] = "altcurrent",
+	[IIO_COVERAGE_PERCENT] = "coveragepercent",
 };
 
 static const char * const iio_ev_type_text[] = {
-- 
2.43.0