[Skiboot] [RFC PATCH v2 7/9] sensor: add a type property

[Cédric Le Goater]

The hwmon framework in Linux needs a type for the sensors it exposes
in userspace through the sysfs interface. This patch gives Linux a hand 
on what is dealing with when parsing the sensor device tree.

Signed-off-by: Cédric Le Goater <clg at fr.ibm.com>
---
 hw/dts.c            |    1 +
 hw/fsp/fsp-sensor.c |   13 +++++++++++++
 2 files changed, 14 insertions(+)

diff --git a/hw/dts.c b/hw/dts.c
index 4590d0dba7b6..7fc4ce45fa2b 100644
--- a/hw/dts.c
+++ b/hw/dts.c
@@ -201,6 +201,7 @@ bool dts_sensor_create_nodes(void)
 			dt_add_property_string(node, "compatible",
 					       "ibm,opal-sensor");
 			dt_add_property_cells(node, "sensor-data", handler);
+			dt_add_property_string(node, "sensor-type", "temp");
 		}
 	}
 
diff --git a/hw/fsp/fsp-sensor.c b/hw/fsp/fsp-sensor.c
index c08e79dae6b3..27fcb2d57a4a 100644
--- a/hw/fsp/fsp-sensor.c
+++ b/hw/fsp/fsp-sensor.c
@@ -635,6 +635,17 @@ out:
 
 #define MAX_NAME	64
 
+static const char *convert_frc_to_sensor_type(int frc)
+{
+	switch (frc) {
+	case SENSOR_FRC_POWER_SUPPLY:	return "power";
+	case SENSOR_FRC_COOLING_FAN:	return "fan";
+	case SENSOR_FRC_AMB_TEMP:	return "temp";
+	default:
+		return "";
+	}
+}
+
 static struct dt_node *sensor_get_node(struct dt_node *sensors,
 				struct sensor_header *header)
 {
@@ -661,6 +672,8 @@ static struct dt_node *sensor_get_node(struct dt_node *sensors,
 		node = dt_new(sensors, name);
 
 		dt_add_property_string(node, "compatible", "ibm,opal-sensor");
+		dt_add_property_string(node, "sensor-type",
+				convert_frc_to_sensor_type(header->frc));
 	}
 	return node;
 }
-- 
1.7.10.4