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path: root/drivers/hwmon/ibmpowernv.c
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Diffstat (limited to 'drivers/hwmon/ibmpowernv.c')
-rw-r--r--drivers/hwmon/ibmpowernv.c55
1 files changed, 52 insertions, 3 deletions
diff --git a/drivers/hwmon/ibmpowernv.c b/drivers/hwmon/ibmpowernv.c
index b6bc463886c0..1180ce631377 100644
--- a/drivers/hwmon/ibmpowernv.c
+++ b/drivers/hwmon/ibmpowernv.c
@@ -32,6 +32,7 @@
#include <linux/err.h>
#define MAX_ATTR_LEN 32
+#define MAX_LABEL_LEN 64
/* Sensor suffix name from DT */
#define DT_FAULT_ATTR_SUFFIX "faulted"
@@ -70,6 +71,7 @@ struct sensor_data {
u32 hwmon_index;
u32 opal_index;
enum sensors type;
+ char label[MAX_LABEL_LEN];
char name[MAX_ATTR_LEN];
struct device_attribute dev_attr;
};
@@ -101,8 +103,25 @@ static ssize_t show_sensor(struct device *dev, struct device_attribute *devattr,
return sprintf(buf, "%u\n", x);
}
-static int get_sensor_index_attr(const char *name, u32 *index,
- char *attr)
+static ssize_t show_label(struct device *dev, struct device_attribute *devattr,
+ char *buf)
+{
+ struct sensor_data *sdata = container_of(devattr, struct sensor_data,
+ dev_attr);
+
+ return sprintf(buf, "%s\n", sdata->label);
+}
+
+static void __init make_sensor_label(struct device_node *np,
+ struct sensor_data *sdata,
+ const char *label)
+{
+ size_t n;
+
+ n = snprintf(sdata->label, sizeof(sdata->label), "%s", label);
+}
+
+static int get_sensor_index_attr(const char *name, u32 *index, char *attr)
{
char *hash_pos = strchr(name, '#');
char buf[8] = { 0 };
@@ -227,11 +246,21 @@ static int populate_attr_groups(struct platform_device *pdev)
opal = of_find_node_by_path("/ibm,opal/sensors");
for_each_child_of_node(opal, np) {
+ const char *label;
+
if (np->name == NULL)
continue;
type = get_sensor_type(np);
- if (type != MAX_SENSOR_TYPE)
+ if (type == MAX_SENSOR_TYPE)
+ continue;
+
+ sensor_groups[type].attr_count++;
+
+ /*
+ * add a new attribute for labels
+ */
+ if (!of_property_read_string(np, "label", &label))
sensor_groups[type].attr_count++;
}
@@ -296,6 +325,7 @@ static int create_device_attrs(struct platform_device *pdev)
for_each_child_of_node(opal, np) {
const char *attr_name;
u32 opal_index;
+ const char *label;
if (np->name == NULL)
continue;
@@ -339,6 +369,25 @@ static int create_device_attrs(struct platform_device *pdev)
pgroups[type]->attrs[sensor_groups[type].attr_count++] =
&sdata[count++].dev_attr.attr;
+
+ if (!of_property_read_string(np, "label", &label)) {
+ /*
+ * For the label attribute, we can reuse the
+ * "properties" of the previous "input"
+ * 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);
+
+ create_hwmon_attr(&sdata[count], "label", show_label);
+
+ pgroups[type]->attrs[sensor_groups[type].attr_count++] =
+ &sdata[count++].dev_attr.attr;
+ }
}
exit_put_node: