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path: root/drivers/thermal/thermal_sysfs.c
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Diffstat (limited to 'drivers/thermal/thermal_sysfs.c')
-rw-r--r--drivers/thermal/thermal_sysfs.c133
1 files changed, 133 insertions, 0 deletions
diff --git a/drivers/thermal/thermal_sysfs.c b/drivers/thermal/thermal_sysfs.c
index 8a7323f63b78..87d9f4d3afaf 100644
--- a/drivers/thermal/thermal_sysfs.c
+++ b/drivers/thermal/thermal_sysfs.c
@@ -631,3 +631,136 @@ int thermal_zone_create_device_groups(struct thermal_zone_device *tz,
return 0;
}
+
+/* sys I/F for cooling device */
+static ssize_t
+thermal_cooling_device_type_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct thermal_cooling_device *cdev = to_cooling_device(dev);
+
+ return sprintf(buf, "%s\n", cdev->type);
+}
+
+static ssize_t
+thermal_cooling_device_max_state_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct thermal_cooling_device *cdev = to_cooling_device(dev);
+ unsigned long state;
+ int ret;
+
+ ret = cdev->ops->get_max_state(cdev, &state);
+ if (ret)
+ return ret;
+ return sprintf(buf, "%ld\n", state);
+}
+
+static ssize_t
+thermal_cooling_device_cur_state_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct thermal_cooling_device *cdev = to_cooling_device(dev);
+ unsigned long state;
+ int ret;
+
+ ret = cdev->ops->get_cur_state(cdev, &state);
+ if (ret)
+ return ret;
+ return sprintf(buf, "%ld\n", state);
+}
+
+static ssize_t
+thermal_cooling_device_cur_state_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct thermal_cooling_device *cdev = to_cooling_device(dev);
+ unsigned long state;
+ int result;
+
+ if (sscanf(buf, "%ld\n", &state) != 1)
+ return -EINVAL;
+
+ if ((long)state < 0)
+ return -EINVAL;
+
+ result = cdev->ops->set_cur_state(cdev, state);
+ if (result)
+ return result;
+ return count;
+}
+
+static struct device_attribute dev_attr_cdev_type =
+__ATTR(type, 0444, thermal_cooling_device_type_show, NULL);
+static DEVICE_ATTR(max_state, 0444,
+ thermal_cooling_device_max_state_show, NULL);
+static DEVICE_ATTR(cur_state, 0644,
+ thermal_cooling_device_cur_state_show,
+ thermal_cooling_device_cur_state_store);
+
+static struct attribute *cooling_device_attrs[] = {
+ &dev_attr_cdev_type.attr,
+ &dev_attr_max_state.attr,
+ &dev_attr_cur_state.attr,
+ NULL,
+};
+
+static const struct attribute_group cooling_device_attr_group = {
+ .attrs = cooling_device_attrs,
+};
+
+static const struct attribute_group *cooling_device_attr_groups[] = {
+ &cooling_device_attr_group,
+ NULL,
+};
+
+void thermal_cooling_device_setup_sysfs(struct thermal_cooling_device *cdev)
+{
+ cdev->device.groups = cooling_device_attr_groups;
+}
+
+/* these helper will be used only at the time of bindig */
+ssize_t
+thermal_cooling_device_trip_point_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct thermal_instance *instance;
+
+ instance =
+ container_of(attr, struct thermal_instance, attr);
+
+ if (instance->trip == THERMAL_TRIPS_NONE)
+ return sprintf(buf, "-1\n");
+ else
+ return sprintf(buf, "%d\n", instance->trip);
+}
+
+ssize_t
+thermal_cooling_device_weight_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct thermal_instance *instance;
+
+ instance = container_of(attr, struct thermal_instance, weight_attr);
+
+ return sprintf(buf, "%d\n", instance->weight);
+}
+
+ssize_t
+thermal_cooling_device_weight_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct thermal_instance *instance;
+ int ret, weight;
+
+ ret = kstrtoint(buf, 0, &weight);
+ if (ret)
+ return ret;
+
+ instance = container_of(attr, struct thermal_instance, weight_attr);
+ instance->weight = weight;
+
+ return count;
+}