Signed-off-by: Anatol Pomozov <anatol.pomo...@gmail.com>
---
Documentation/devicetree/bindings/hwmon/ina2xx.txt | 3 +++
drivers/hwmon/ina2xx.c | 19 +++++++++++++++++++
2 files changed, 22 insertions(+)
diff --git a/Documentation/devicetree/bindings/hwmon/ina2xx.txt
b/Documentation/devicetree/bindings/hwmon/ina2xx.txt
index 9bcd5e8..76315e2 100644
--- a/Documentation/devicetree/bindings/hwmon/ina2xx.txt
+++ b/Documentation/devicetree/bindings/hwmon/ina2xx.txt
@@ -11,6 +11,9 @@ Required properties:
Optional properties:
+- label
+ Human readable identifier for the sensor. Readable via sysfs file
'label'.
+
- shunt-resistor
Shunt resistor value in micro-Ohm
diff --git a/drivers/hwmon/ina2xx.c b/drivers/hwmon/ina2xx.c
index b24f1d3..6e15115 100644
--- a/drivers/hwmon/ina2xx.c
+++ b/drivers/hwmon/ina2xx.c
@@ -108,6 +108,7 @@ struct ina2xx_data {
long rshunt;
struct mutex config_lock;
struct regmap *regmap;
+ const char *label;
const struct attribute_group *groups[INA2XX_MAX_ATTRIBUTE_GROUPS];
};
@@ -368,6 +369,21 @@ static ssize_t ina226_show_interval(struct device *dev,
return snprintf(buf, PAGE_SIZE, "%d\n", ina226_reg_to_interval(regval));
}
+static ssize_t ina2xx_show_label(struct device *dev,
+ struct device_attribute *da, char *buf)
+{
+ struct ina2xx_data *data = dev_get_drvdata(dev);
+ ssize_t ret = 0;
+
+ if (data->label)
+ ret = scnprintf(buf, PAGE_SIZE, "%s\n", data->label);
+
+ return ret;
+}
+
+/* label */
+static SENSOR_DEVICE_ATTR(label, S_IRUGO, ina2xx_show_label, NULL, 0);
+
/* shunt voltage */
static SENSOR_DEVICE_ATTR(in0_input, S_IRUGO, ina2xx_show_value, NULL,
INA2XX_SHUNT_VOLTAGE);
@@ -395,6 +411,7 @@ static SENSOR_DEVICE_ATTR(update_interval, S_IRUGO |
S_IWUSR,
/* pointers to created device attributes */
static struct attribute *ina2xx_attrs[] = {
+ &sensor_dev_attr_label.dev_attr.attr,
&sensor_dev_attr_in0_input.dev_attr.attr,
&sensor_dev_attr_in1_input.dev_attr.attr,
&sensor_dev_attr_curr1_input.dev_attr.attr,
@@ -432,6 +449,8 @@ static int ina2xx_probe(struct i2c_client *client,
/* set the device type */
data->config = &ina2xx_config[id->driver_data];
+ of_property_read_string(dev->of_node, "label", &data->label);
+
if (of_property_read_u32(dev->of_node, "shunt-resistor", &val) < 0) {
struct ina2xx_platform_data *pdata = dev_get_platdata(dev);