iio: Add modifier for UV light

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

Documentation/ABI/testing/sysfs-bus-iio

@@ -1255,12 +1255,14 @@ Description:
 What:		/sys/.../iio:deviceX/in_intensityY_raw
 What:		/sys/.../iio:deviceX/in_intensityY_ir_raw
 What:		/sys/.../iio:deviceX/in_intensityY_both_raw
+What:		/sys/.../iio:deviceX/in_intensityY_uv_raw
 KernelVersion:	3.4
 Contact:	linux-iio@vger.kernel.org
 Description:
 		Unit-less light intensity. Modifiers both and ir indicate
 		that measurements contains visible and infrared light
-		components or just infrared light, respectively.
+		components or just infrared light, respectively. Modifier uv indicates
+		that measurements contain ultraviolet light components.
 
 What:		/sys/.../iio:deviceX/in_intensity_red_integration_time
 What:		/sys/.../iio:deviceX/in_intensity_green_integration_time

drivers/iio/industrialio-core.c

@@ -101,6 +101,7 @@ static const char * const iio_modifier_names[] = {
 	[IIO_MOD_LIGHT_RED] = "red",
 	[IIO_MOD_LIGHT_GREEN] = "green",
 	[IIO_MOD_LIGHT_BLUE] = "blue",
+	[IIO_MOD_LIGHT_UV] = "uv",
 	[IIO_MOD_QUATERNION] = "quaternion",
 	[IIO_MOD_TEMP_AMBIENT] = "ambient",
 	[IIO_MOD_TEMP_OBJECT] = "object",

include/uapi/linux/iio/types.h

@@ -77,6 +77,7 @@ enum iio_modifier {
 	IIO_MOD_Q,
 	IIO_MOD_CO2,
 	IIO_MOD_VOC,
+	IIO_MOD_LIGHT_UV,
 };
 
 enum iio_event_type {

tools/iio/iio_event_monitor.c

@@ -93,6 +93,7 @@ static const char * const iio_modifier_names[] = {
 	[IIO_MOD_LIGHT_RED] = "red",
 	[IIO_MOD_LIGHT_GREEN] = "green",
 	[IIO_MOD_LIGHT_BLUE] = "blue",
+	[IIO_MOD_LIGHT_UV] = "uv",
 	[IIO_MOD_QUATERNION] = "quaternion",
 	[IIO_MOD_TEMP_AMBIENT] = "ambient",
 	[IIO_MOD_TEMP_OBJECT] = "object",
@@ -172,6 +173,7 @@ static bool event_is_known(struct iio_event_data *event)
 	case IIO_MOD_LIGHT_RED:
 	case IIO_MOD_LIGHT_GREEN:
 	case IIO_MOD_LIGHT_BLUE:
+	case IIO_MOD_LIGHT_UV:
 	case IIO_MOD_QUATERNION:
 	case IIO_MOD_TEMP_AMBIENT:
 	case IIO_MOD_TEMP_OBJECT: