hwmon: (applesmc) Simplify feature sysfs handling
Given the dynamic node construction method, the setup of the
accelerometer, light sensor and keyboard backlight sysfs nodes
can be simplified. This patch does not contain any logic changes.
Signed-off-by: Henrik Rydberg <rydberg@euromail.se>
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
diff --git a/drivers/hwmon/applesmc.c b/drivers/hwmon/applesmc.c
index b079236..ec06b99 100644
--- a/drivers/hwmon/applesmc.c
+++ b/drivers/hwmon/applesmc.c
@@ -992,47 +992,27 @@
.brightness_set = applesmc_brightness_set,
};
-static DEVICE_ATTR(name, 0444, applesmc_name_show, NULL);
-
-static DEVICE_ATTR(position, 0444, applesmc_position_show, NULL);
-static DEVICE_ATTR(calibrate, 0644,
- applesmc_calibrate_show, applesmc_calibrate_store);
-
-static struct attribute *accelerometer_attributes[] = {
- &dev_attr_position.attr,
- &dev_attr_calibrate.attr,
- NULL
+static struct applesmc_node_group info_group[] = {
+ { "name", applesmc_name_show },
+ { "key_count", applesmc_key_count_show },
+ { "key_at_index", applesmc_key_at_index_show, applesmc_key_at_index_store },
+ { "key_at_index_name", applesmc_key_at_index_name_show },
+ { "key_at_index_type", applesmc_key_at_index_type_show },
+ { "key_at_index_data_length", applesmc_key_at_index_data_length_show },
+ { "key_at_index_data", applesmc_key_at_index_read_show },
+ { }
};
-static const struct attribute_group accelerometer_attributes_group =
- { .attrs = accelerometer_attributes };
-
-static DEVICE_ATTR(light, 0444, applesmc_light_show, NULL);
-
-static DEVICE_ATTR(key_count, 0444, applesmc_key_count_show, NULL);
-static DEVICE_ATTR(key_at_index, 0644,
- applesmc_key_at_index_show, applesmc_key_at_index_store);
-static DEVICE_ATTR(key_at_index_name, 0444,
- applesmc_key_at_index_name_show, NULL);
-static DEVICE_ATTR(key_at_index_type, 0444,
- applesmc_key_at_index_type_show, NULL);
-static DEVICE_ATTR(key_at_index_data_length, 0444,
- applesmc_key_at_index_data_length_show, NULL);
-static DEVICE_ATTR(key_at_index_data, 0444,
- applesmc_key_at_index_read_show, NULL);
-
-static struct attribute *key_enumeration_attributes[] = {
- &dev_attr_key_count.attr,
- &dev_attr_key_at_index.attr,
- &dev_attr_key_at_index_name.attr,
- &dev_attr_key_at_index_type.attr,
- &dev_attr_key_at_index_data_length.attr,
- &dev_attr_key_at_index_data.attr,
- NULL
+static struct applesmc_node_group accelerometer_group[] = {
+ { "position", applesmc_position_show },
+ { "calibrate", applesmc_calibrate_show, applesmc_calibrate_store },
+ { }
};
-static const struct attribute_group key_enumeration_group =
- { .attrs = key_enumeration_attributes };
+static struct applesmc_node_group light_sensor_group[] = {
+ { "light", applesmc_light_show },
+ { }
+};
static struct applesmc_node_group fan_group[] = {
{ "fan%d_label", applesmc_show_fan_position },
@@ -1115,8 +1095,10 @@
struct input_dev *idev;
int ret;
- ret = sysfs_create_group(&pdev->dev.kobj,
- &accelerometer_attributes_group);
+ if (!smcreg.has_accelerometer)
+ return 0;
+
+ ret = applesmc_create_nodes(accelerometer_group, 1);
if (ret)
goto out;
@@ -1153,7 +1135,7 @@
input_free_polled_device(applesmc_idev);
out_sysfs:
- sysfs_remove_group(&pdev->dev.kobj, &accelerometer_attributes_group);
+ applesmc_destroy_nodes(accelerometer_group);
out:
pr_warn("driver init failed (ret=%d)!\n", ret);
@@ -1163,10 +1145,45 @@
/* Release all ressources used by the accelerometer */
static void applesmc_release_accelerometer(void)
{
+ if (!smcreg.has_accelerometer)
+ return;
input_unregister_polled_device(applesmc_idev);
input_free_polled_device(applesmc_idev);
- sysfs_remove_group(&pdev->dev.kobj, &accelerometer_attributes_group);
+ applesmc_destroy_nodes(accelerometer_group);
}
+
+static int applesmc_create_light_sensor(void)
+{
+ if (!smcreg.num_light_sensors)
+ return 0;
+ return applesmc_create_nodes(light_sensor_group, 1);
+}
+
+static void applesmc_release_light_sensor(void)
+{
+ if (!smcreg.num_light_sensors)
+ return;
+ applesmc_destroy_nodes(light_sensor_group);
+}
+
+static int applesmc_create_key_backlight(void)
+{
+ if (!smcreg.has_key_backlight)
+ return 0;
+ applesmc_led_wq = create_singlethread_workqueue("applesmc-led");
+ if (!applesmc_led_wq)
+ return -ENOMEM;
+ return led_classdev_register(&pdev->dev, &applesmc_backlight);
+}
+
+static void applesmc_release_key_backlight(void)
+{
+ if (!smcreg.has_key_backlight)
+ return;
+ led_classdev_unregister(&applesmc_backlight);
+ destroy_workqueue(applesmc_led_wq);
+}
+
static int applesmc_dmi_match(const struct dmi_system_id *id)
{
return 1;
@@ -1234,15 +1251,10 @@
if (ret)
goto out_device;
- ret = sysfs_create_file(&pdev->dev.kobj, &dev_attr_name.attr);
+ ret = applesmc_create_nodes(info_group, 1);
if (ret)
goto out_smcreg;
- /* Create key enumeration sysfs files */
- ret = sysfs_create_group(&pdev->dev.kobj, &key_enumeration_group);
- if (ret)
- goto out_name;
-
ret = applesmc_create_nodes(fan_group, smcreg.fan_count);
if (ret)
goto out_info;
@@ -1251,32 +1263,17 @@
if (ret)
goto out_fans;
- if (smcreg.has_accelerometer) {
- ret = applesmc_create_accelerometer();
- if (ret)
- goto out_temperature;
- }
+ ret = applesmc_create_accelerometer();
+ if (ret)
+ goto out_temperature;
- if (smcreg.num_light_sensors) {
- /* Add light sensor file */
- ret = sysfs_create_file(&pdev->dev.kobj, &dev_attr_light.attr);
- if (ret)
- goto out_accelerometer;
- }
+ ret = applesmc_create_light_sensor();
+ if (ret)
+ goto out_accelerometer;
- if (smcreg.has_key_backlight) {
- /* Create the workqueue */
- applesmc_led_wq = create_singlethread_workqueue("applesmc-led");
- if (!applesmc_led_wq) {
- ret = -ENOMEM;
- goto out_light_sysfs;
- }
-
- /* register as a led device */
- ret = led_classdev_register(&pdev->dev, &applesmc_backlight);
- if (ret < 0)
- goto out_light_wq;
- }
+ ret = applesmc_create_key_backlight();
+ if (ret)
+ goto out_light_sysfs;
hwmon_dev = hwmon_device_register(&pdev->dev);
if (IS_ERR(hwmon_dev)) {
@@ -1289,25 +1286,17 @@
return 0;
out_light_ledclass:
- if (smcreg.has_key_backlight)
- led_classdev_unregister(&applesmc_backlight);
-out_light_wq:
- if (smcreg.has_key_backlight)
- destroy_workqueue(applesmc_led_wq);
+ applesmc_release_key_backlight();
out_light_sysfs:
- if (smcreg.num_light_sensors)
- sysfs_remove_file(&pdev->dev.kobj, &dev_attr_light.attr);
+ applesmc_release_light_sensor();
out_accelerometer:
- if (smcreg.has_accelerometer)
- applesmc_release_accelerometer();
+ applesmc_release_accelerometer();
out_temperature:
applesmc_destroy_nodes(temp_group);
out_fans:
applesmc_destroy_nodes(fan_group);
out_info:
- sysfs_remove_group(&pdev->dev.kobj, &key_enumeration_group);
-out_name:
- sysfs_remove_file(&pdev->dev.kobj, &dev_attr_name.attr);
+ applesmc_destroy_nodes(info_group);
out_smcreg:
applesmc_destroy_smcreg();
out_device:
@@ -1324,18 +1313,12 @@
static void __exit applesmc_exit(void)
{
hwmon_device_unregister(hwmon_dev);
- if (smcreg.has_key_backlight) {
- led_classdev_unregister(&applesmc_backlight);
- destroy_workqueue(applesmc_led_wq);
- }
- if (smcreg.num_light_sensors)
- sysfs_remove_file(&pdev->dev.kobj, &dev_attr_light.attr);
- if (smcreg.has_accelerometer)
- applesmc_release_accelerometer();
+ applesmc_release_key_backlight();
+ applesmc_release_light_sensor();
+ applesmc_release_accelerometer();
applesmc_destroy_nodes(temp_group);
applesmc_destroy_nodes(fan_group);
- sysfs_remove_group(&pdev->dev.kobj, &key_enumeration_group);
- sysfs_remove_file(&pdev->dev.kobj, &dev_attr_name.attr);
+ applesmc_destroy_nodes(info_group);
applesmc_destroy_smcreg();
platform_device_unregister(pdev);
platform_driver_unregister(&applesmc_driver);