hwmon: (lm95245) Convert to use devm_hwmon_device_register_with_groups
Simplify code, reduce code size, and attach hwmon attributes to hwmon device. Signed-off-by: Guenter Roeck <linux@roeck-us.net> Reviewed-by: Jean Delvare <jdelvare@suse.de>hifive-unleashed-5.1
Guenter Roeck
parent
ce50e7faf1
commit
7276d55e62
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@ -115,7 +115,7 @@ static const u8 lm95245_reg_address[] = {
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/* Client data (each client gets its own) */
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struct lm95245_data {
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struct device *hwmon_dev;
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struct i2c_client *client;
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struct mutex update_lock;
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unsigned long last_updated; /* in jiffies */
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unsigned long interval; /* in msecs */
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@ -140,8 +140,8 @@ static int temp_from_reg_signed(u8 val_h, u8 val_l)
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static struct lm95245_data *lm95245_update_device(struct device *dev)
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{
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struct i2c_client *client = to_i2c_client(dev);
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struct lm95245_data *data = i2c_get_clientdata(client);
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struct lm95245_data *data = dev_get_drvdata(dev);
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struct i2c_client *client = data->client;
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mutex_lock(&data->update_lock);
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@ -248,9 +248,9 @@ static ssize_t show_limit(struct device *dev, struct device_attribute *attr,
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static ssize_t set_limit(struct device *dev, struct device_attribute *attr,
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const char *buf, size_t count)
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{
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struct i2c_client *client = to_i2c_client(dev);
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struct lm95245_data *data = i2c_get_clientdata(client);
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struct lm95245_data *data = dev_get_drvdata(dev);
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int index = to_sensor_dev_attr(attr)->index;
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struct i2c_client *client = data->client;
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unsigned long val;
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if (kstrtoul(buf, 10, &val) < 0)
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@ -284,9 +284,9 @@ static ssize_t show_crit_hyst(struct device *dev, struct device_attribute *attr,
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static ssize_t set_crit_hyst(struct device *dev, struct device_attribute *attr,
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const char *buf, size_t count)
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{
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struct i2c_client *client = to_i2c_client(dev);
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struct lm95245_data *data = i2c_get_clientdata(client);
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struct lm95245_data *data = dev_get_drvdata(dev);
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int index = to_sensor_dev_attr(attr)->index;
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struct i2c_client *client = data->client;
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unsigned long val;
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int hyst, limit;
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@ -312,8 +312,7 @@ static ssize_t set_crit_hyst(struct device *dev, struct device_attribute *attr,
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static ssize_t show_type(struct device *dev, struct device_attribute *attr,
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char *buf)
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{
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struct i2c_client *client = to_i2c_client(dev);
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struct lm95245_data *data = i2c_get_clientdata(client);
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struct lm95245_data *data = dev_get_drvdata(dev);
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return snprintf(buf, PAGE_SIZE - 1,
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data->config2 & CFG2_REMOTE_TT ? "1\n" : "2\n");
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@ -322,8 +321,8 @@ static ssize_t show_type(struct device *dev, struct device_attribute *attr,
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static ssize_t set_type(struct device *dev, struct device_attribute *attr,
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const char *buf, size_t count)
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{
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struct i2c_client *client = to_i2c_client(dev);
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struct lm95245_data *data = i2c_get_clientdata(client);
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struct lm95245_data *data = dev_get_drvdata(dev);
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struct i2c_client *client = data->client;
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unsigned long val;
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if (kstrtoul(buf, 10, &val) < 0)
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@ -369,8 +368,8 @@ static ssize_t show_interval(struct device *dev, struct device_attribute *attr,
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static ssize_t set_interval(struct device *dev, struct device_attribute *attr,
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const char *buf, size_t count)
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{
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struct i2c_client *client = to_i2c_client(dev);
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struct lm95245_data *data = i2c_get_clientdata(client);
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struct lm95245_data *data = dev_get_drvdata(dev);
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struct i2c_client *client = data->client;
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unsigned long val;
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if (kstrtoul(buf, 10, &val) < 0)
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@ -408,7 +407,7 @@ static SENSOR_DEVICE_ATTR(temp2_fault, S_IRUGO, show_alarm, NULL,
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static DEVICE_ATTR(update_interval, S_IWUSR | S_IRUGO, show_interval,
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set_interval);
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static struct attribute *lm95245_attributes[] = {
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static struct attribute *lm95245_attrs[] = {
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&sensor_dev_attr_temp1_input.dev_attr.attr,
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&sensor_dev_attr_temp1_crit.dev_attr.attr,
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&sensor_dev_attr_temp1_crit_hyst.dev_attr.attr,
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@ -422,10 +421,7 @@ static struct attribute *lm95245_attributes[] = {
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&dev_attr_update_interval.attr,
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NULL
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};
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static const struct attribute_group lm95245_group = {
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.attrs = lm95245_attributes,
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};
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ATTRIBUTE_GROUPS(lm95245);
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/* Return 0 if detection is successful, -ENODEV otherwise */
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static int lm95245_detect(struct i2c_client *new_client,
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@ -446,10 +442,9 @@ static int lm95245_detect(struct i2c_client *new_client,
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return 0;
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}
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static void lm95245_init_client(struct i2c_client *client)
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static void lm95245_init_client(struct i2c_client *client,
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struct lm95245_data *data)
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{
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struct lm95245_data *data = i2c_get_clientdata(client);
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data->interval = lm95245_read_conversion_rate(client);
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data->config1 = i2c_smbus_read_byte_data(client,
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@ -465,49 +460,27 @@ static void lm95245_init_client(struct i2c_client *client)
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}
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}
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static int lm95245_probe(struct i2c_client *new_client,
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static int lm95245_probe(struct i2c_client *client,
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const struct i2c_device_id *id)
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{
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struct device *dev = &client->dev;
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struct lm95245_data *data;
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int err;
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struct device *hwmon_dev;
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data = devm_kzalloc(&new_client->dev, sizeof(struct lm95245_data),
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GFP_KERNEL);
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data = devm_kzalloc(dev, sizeof(struct lm95245_data), GFP_KERNEL);
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if (!data)
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return -ENOMEM;
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i2c_set_clientdata(new_client, data);
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data->client = client;
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mutex_init(&data->update_lock);
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/* Initialize the LM95245 chip */
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lm95245_init_client(new_client);
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lm95245_init_client(client, data);
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/* Register sysfs hooks */
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err = sysfs_create_group(&new_client->dev.kobj, &lm95245_group);
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if (err)
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return err;
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data->hwmon_dev = hwmon_device_register(&new_client->dev);
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if (IS_ERR(data->hwmon_dev)) {
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err = PTR_ERR(data->hwmon_dev);
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goto exit_remove_files;
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}
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return 0;
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exit_remove_files:
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sysfs_remove_group(&new_client->dev.kobj, &lm95245_group);
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return err;
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}
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static int lm95245_remove(struct i2c_client *client)
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{
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struct lm95245_data *data = i2c_get_clientdata(client);
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hwmon_device_unregister(data->hwmon_dev);
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sysfs_remove_group(&client->dev.kobj, &lm95245_group);
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return 0;
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hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name,
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data,
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lm95245_groups);
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return PTR_ERR_OR_ZERO(hwmon_dev);
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}
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/* Driver data (common to all clients) */
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@ -523,7 +496,6 @@ static struct i2c_driver lm95245_driver = {
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.name = DEVNAME,
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},
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.probe = lm95245_probe,
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.remove = lm95245_remove,
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.id_table = lm95245_id,
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.detect = lm95245_detect,
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.address_list = normal_i2c,
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