1 files changed, 61 insertions, 7 deletions

diff --git a/drivers/hwmon/ibmpowernv.c b/drivers/hwmon/ibmpowernv.c
index 6d2e6605751c..b562323e2c4e 100644
--- a/drivers/hwmon/ibmpowernv.c
+++ b/drivers/hwmon/ibmpowernv.c
@@ -298,10 +298,14 @@ static int populate_attr_groups(struct platform_device *pdev)
 		sensor_groups[type].attr_count++;
 
 		/*
-		 * add a new attribute for labels
+		 * add attributes for labels, min and max
 		 */
 		if (!of_property_read_string(np, "label", &label))
 			sensor_groups[type].attr_count++;
+		if (of_find_property(np, "sensor-data-min", NULL))
+			sensor_groups[type].attr_count++;
+		if (of_find_property(np, "sensor-data-max", NULL))
+			sensor_groups[type].attr_count++;
 	}
 
 	of_node_put(opal);
@@ -337,6 +341,41 @@ static void create_hwmon_attr(struct sensor_data *sdata, const char *attr_name,
 	sdata->dev_attr.show = show;
 }
 
+static void populate_sensor(struct sensor_data *sdata, int od, int hd, int sid,
+			    const char *attr_name, enum sensors type,
+			    const struct attribute_group *pgroup,
+			    ssize_t (*show)(struct device *dev,
+					    struct device_attribute *attr,
+					    char *buf))
+{
+	sdata->id = sid;
+	sdata->type = type;
+	sdata->opal_index = od;
+	sdata->hwmon_index = hd;
+	create_hwmon_attr(sdata, attr_name, show);
+	pgroup->attrs[sensor_groups[type].attr_count++] = &sdata->dev_attr.attr;
+}
+
+static char *get_max_attr(enum sensors type)
+{
+	switch (type) {
+	case POWER_INPUT:
+		return "input_highest";
+	default:
+		return "highest";
+	}
+}
+
+static char *get_min_attr(enum sensors type)
+{
+	switch (type) {
+	case POWER_INPUT:
+		return "input_lowest";
+	default:
+		return "lowest";
+	}
+}
+
 /*
  * Iterate through the device tree for each child of 'sensors' node, create
  * a sysfs attribute file, the file is named by translating the DT node name
@@ -417,16 +456,31 @@ static int create_device_attrs(struct platform_device *pdev)
 			 * attribute. They are related to the same
 			 * sensor.
 			 */
-			sdata[count].type = type;
-			sdata[count].opal_index = sdata[count - 1].opal_index;
-			sdata[count].hwmon_index = sdata[count - 1].hwmon_index;
 
 			make_sensor_label(np, &sdata[count], label);
+			populate_sensor(&sdata[count], opal_index,
+					sdata[count - 1].hwmon_index,
+					sensor_id, "label", type, pgroups[type],
+					show_label);
+			count++;
+		}
 
-			create_hwmon_attr(&sdata[count], "label", show_label);
+		if (!of_property_read_u32(np, "sensor-data-max", &sensor_id)) {
+			attr_name = get_max_attr(type);
+			populate_sensor(&sdata[count], opal_index,
+					sdata[count - 1].hwmon_index,
+					sensor_id, attr_name, type,
+					pgroups[type], show_sensor);
+			count++;
+		}
 
-			pgroups[type]->attrs[sensor_groups[type].attr_count++] =
-				&sdata[count++].dev_attr.attr;
+		if (!of_property_read_u32(np, "sensor-data-min", &sensor_id)) {
+			attr_name = get_min_attr(type);
+			populate_sensor(&sdata[count], opal_index,
+					sdata[count - 1].hwmon_index,
+					sensor_id, attr_name, type,
+					pgroups[type], show_sensor);
+			count++;
 		}
 	}