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Commit 468bf0e3 authored by Guenter Roeck's avatar Guenter Roeck
Browse files

hwmon: (ina2xx) Convert to use devm_hwmon_device_register_with_groups 



Also introduce dev variable in probe function to simplify access
to client->dev, and use new macro ATTRIBUTE_GROUPS to declare
attribute groups.

Signed-off-by: default avatarGuenter Roeck <linux@roeck-us.net>
parent 38c75dc3

drivers/hwmon/ina2xx.c

+21 −43
Original line number Diff line number Diff line
@@ -78,7 +78,7 @@ struct ina2xx_config { 
};



struct ina2xx_data {

	struct device *hwmon_dev;

	struct i2c_client *client;

	const struct ina2xx_config *config;



	struct mutex update_lock;
@@ -112,8 +112,8 @@ static const struct ina2xx_config ina2xx_config[] = { 


static struct ina2xx_data *ina2xx_update_device(struct device *dev)

{

	struct i2c_client *client = to_i2c_client(dev);

	struct ina2xx_data *data = i2c_get_clientdata(client);

	struct ina2xx_data *data = dev_get_drvdata(dev);

	struct i2c_client *client = data->client;

	struct ina2xx_data *ret = data;



	mutex_lock(&data->update_lock);
@@ -203,39 +203,37 @@ static SENSOR_DEVICE_ATTR(power1_input, S_IRUGO, ina2xx_show_value, NULL, 
			  INA2XX_POWER);



/* pointers to created device attributes */

static struct attribute *ina2xx_attributes[] = {

static struct attribute *ina2xx_attrs[] = {

	&sensor_dev_attr_in0_input.dev_attr.attr,

	&sensor_dev_attr_in1_input.dev_attr.attr,

	&sensor_dev_attr_curr1_input.dev_attr.attr,

	&sensor_dev_attr_power1_input.dev_attr.attr,

	NULL,

};



static const struct attribute_group ina2xx_group = {

	.attrs = ina2xx_attributes,

};

ATTRIBUTE_GROUPS(ina2xx);



static int ina2xx_probe(struct i2c_client *client,

			const struct i2c_device_id *id)

{

	struct i2c_adapter *adapter = client->adapter;

	struct ina2xx_data *data;

	struct ina2xx_platform_data *pdata;

	int ret;

	u32 val;

	struct device *dev = &client->dev;

	struct ina2xx_data *data;

	struct device *hwmon_dev;

	long shunt = 10000; /* default shunt value 10mOhms */

	u32 val;



	if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WORD_DATA))

		return -ENODEV;



	data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL);

	data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);

	if (!data)

		return -ENOMEM;



	if (dev_get_platdata(&client->dev)) {

		pdata = dev_get_platdata(&client->dev);

	if (dev_get_platdata(dev)) {

		pdata = dev_get_platdata(dev);

		shunt = pdata->shunt_uohms;

	} else if (!of_property_read_u32(client->dev.of_node,

	} else if (!of_property_read_u32(dev->of_node,

					 "shunt-resistor", &val)) {

		shunt = val;

	}
@@ -255,37 +253,18 @@ static int ina2xx_probe(struct i2c_client *client, 
	i2c_smbus_write_word_swapped(client, INA2XX_CALIBRATION,

				     data->config->calibration_factor / shunt);



	i2c_set_clientdata(client, data);

	data->client = client;

	mutex_init(&data->update_lock);



	ret = sysfs_create_group(&client->dev.kobj, &ina2xx_group);

	if (ret)

		return ret;

	hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name,

							   data, ina2xx_groups);

	if (IS_ERR(hwmon_dev))

		return PTR_ERR(hwmon_dev);



	data->hwmon_dev = hwmon_device_register(&client->dev);

	if (IS_ERR(data->hwmon_dev)) {

		ret = PTR_ERR(data->hwmon_dev);

		goto out_err_hwmon;

	}



	dev_info(&client->dev, "power monitor %s (Rshunt = %li uOhm)\n",

	dev_info(dev, "power monitor %s (Rshunt = %li uOhm)\n",

		 id->name, shunt);



	return 0;



out_err_hwmon:

	sysfs_remove_group(&client->dev.kobj, &ina2xx_group);

	return ret;

}



static int ina2xx_remove(struct i2c_client *client)

{

	struct ina2xx_data *data = i2c_get_clientdata(client);



	hwmon_device_unregister(data->hwmon_dev);

	sysfs_remove_group(&client->dev.kobj, &ina2xx_group);



	return 0;

}



static const struct i2c_device_id ina2xx_id[] = {
@@ -302,7 +281,6 @@ static struct i2c_driver ina2xx_driver = { 
		.name	= "ina2xx",

	},

	.probe		= ina2xx_probe,

	.remove		= ina2xx_remove,

	.id_table	= ina2xx_id,

};