iio: Add channel for UV index

UV index indicating strength of sunburn-producing ultraviolet (UV) radiation

Signed-off-by: Peter Meerwald-Stadler <pmeerw@pmeerw.net>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

4 files changed, 13 insertions, 0 deletions

diff --git a/Documentation/ABI/testing/sysfs-bus-iio b/Documentation/ABI/testing/sysfs-bus-iio
index 6fb9180e7661..f155eff910f9 100644
--- a/Documentation/ABI/testing/sysfs-bus-iio
+++ b/Documentation/ABI/testing/sysfs-bus-iio
@@ -1264,6 +1264,15 @@ Description:
                 components or just infrared light, respectively. Modifier uv indicates
                 that measurements contain ultraviolet light components.
 
+What:           /sys/.../iio:deviceX/in_uvindex_input
+KernelVersion:  4.6
+Contact:        linux-iio@vger.kernel.org
+Description:
+                UV light intensity index measuring the human skin's response to
+                different wavelength of sunlight weighted according to the
+                standardised CIE Erythemal Action Spectrum. UV index values range
+                from 0 (low) to >=11 (extreme).
+
 What:           /sys/.../iio:deviceX/in_intensity_red_integration_time
 What:           /sys/.../iio:deviceX/in_intensity_green_integration_time
 What:           /sys/.../iio:deviceX/in_intensity_blue_integration_time
diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c
index 88353ae0ec07..190a5939fd8c 100644
--- a/drivers/iio/industrialio-core.c
+++ b/drivers/iio/industrialio-core.c
@@ -79,6 +79,7 @@ static const char * const iio_chan_type_name_spec[] = {
         [IIO_CONCENTRATION] = "concentration",
         [IIO_RESISTANCE] = "resistance",
         [IIO_PH] = "ph",
+        [IIO_UVINDEX] = "uvindex",
 };
 
 static const char * const iio_modifier_names[] = {
diff --git a/include/uapi/linux/iio/types.h b/include/uapi/linux/iio/types.h
index 9337eceb9f9d..b0916fc72cce 100644
--- a/include/uapi/linux/iio/types.h
+++ b/include/uapi/linux/iio/types.h
@@ -38,6 +38,7 @@ enum iio_chan_type {
         IIO_CONCENTRATION,
         IIO_RESISTANCE,
         IIO_PH,
+        IIO_UVINDEX,
 };
 
 enum iio_modifier {
diff --git a/tools/iio/iio_event_monitor.c b/tools/iio/iio_event_monitor.c
index 8d7d9797480b..d9b7e0f306c6 100644
--- a/tools/iio/iio_event_monitor.c
+++ b/tools/iio/iio_event_monitor.c
@@ -56,6 +56,7 @@ static const char * const iio_chan_type_name_spec[] = {
         [IIO_CONCENTRATION] = "concentration",
         [IIO_RESISTANCE] = "resistance",
         [IIO_PH] = "ph",
+        [IIO_UVINDEX] = "uvindex",
 };
 
 static const char * const iio_ev_type_text[] = {
@@ -147,6 +148,7 @@ static bool event_is_known(struct iio_event_data *event)
         case IIO_CONCENTRATION:
         case IIO_RESISTANCE:
         case IIO_PH:
+        case IIO_UVINDEX:
                 break;
         default:
                 return false;