Signed-off-by: Matt Ranostay <mranostay@xxxxxxxxx>
---
Documentation/ABI/testing/sysfs-bus-iio | 7 +++++++
drivers/iio/industrialio-core.c | 1 +
include/uapi/linux/iio/types.h | 1 +
3 files changed, 9 insertions(+)
diff --git a/Documentation/ABI/testing/sysfs-bus-iio b/Documentation/ABI/testing/sysfs-bus-iio
index 0439c2a..86ba8d6 100644
--- a/Documentation/ABI/testing/sysfs-bus-iio
+++ b/Documentation/ABI/testing/sysfs-bus-iio
@@ -1491,3 +1491,10 @@ Description:
This ABI is especially applicable for humidity sensors
to heatup the device and get rid of any condensation
in some humidity environment
+
+What: /sys/bus/iio/devices/iio:deviceX/in_ph_raw
+KernelVersion: 4.5
+Contact: linux-iio@xxxxxxxxxxxxxxx
+Description:
+ Raw (unscaled no offset etc.) pH reading of a substance as a negative
+ base-10 logarithm of hydrodium ions in a litre of water.
diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c
index d42a8ff9..e1b9a9e 100644
--- a/drivers/iio/industrialio-core.c
+++ b/drivers/iio/industrialio-core.c
@@ -77,6 +77,7 @@ static const char * const iio_chan_type_name_spec[] = {
[IIO_VELOCITY] = "velocity",
[IIO_CONCENTRATION] = "concentration",
[IIO_RESISTANCE] = "resistance",
+ [IIO_PH] = "ph",
};
static const char * const iio_modifier_names[] = {
diff --git a/include/uapi/linux/iio/types.h b/include/uapi/linux/iio/types.h
index 7c63bd6..c077617 100644
--- a/include/uapi/linux/iio/types.h
+++ b/include/uapi/linux/iio/types.h
@@ -37,6 +37,7 @@ enum iio_chan_type {
IIO_VELOCITY,
IIO_CONCENTRATION,
IIO_RESISTANCE,
+ IIO_PH,
};
enum iio_modifier {
--
1.9.1
--
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