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hwmon: (ad7418) Convert to devm_hwmon_device_register_with_groups 

Use ATTRIBUTE_GROUPS macro and devm_hwmon_device_register_with_groups() to
simplify the code a bit.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Axel Lin 2014-07-01 22:40:29 +08:00 committed by Guenter Roeck
parent 991763a91c
commit 337076f9b6
1 changed files with 24 additions and 41 deletions
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65
drivers/hwmon/ad7418.c
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@ -44,8 +44,7 @@ static const u8 AD7418_REG_TEMP[] = { AD7418_REG_TEMP_IN,
AD7418_REG_TEMP_OS }; AD7418_REG_TEMP_OS };
struct ad7418_data { struct ad7418_data {
struct device *hwmon_dev; struct i2c_client *client;
struct attribute_group attrs;
enum chips type; enum chips type;
struct mutex lock; struct mutex lock;
int adc_max; /* number of ADC channels */ int adc_max; /* number of ADC channels */
@ -57,8 +56,8 @@ struct ad7418_data {
static struct ad7418_data *ad7418_update_device(struct device *dev) static struct ad7418_data *ad7418_update_device(struct device *dev)
{ {
struct i2c_client *client = to_i2c_client(dev); struct ad7418_data *data = dev_get_drvdata(dev);
struct ad7418_data *data = i2c_get_clientdata(client); struct i2c_client *client = data->client;
mutex_lock(&data->lock); mutex_lock(&data->lock);
@ -127,8 +126,8 @@ static ssize_t set_temp(struct device *dev, struct device_attribute *devattr,
const char *buf, size_t count) const char *buf, size_t count)
{ {
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct i2c_client *client = to_i2c_client(dev); struct ad7418_data *data = dev_get_drvdata(dev);
struct ad7418_data *data = i2c_get_clientdata(client); struct i2c_client *client = data->client;
long temp; long temp;
int ret = kstrtol(buf, 10, &temp); int ret = kstrtol(buf, 10, &temp);
@ -155,14 +154,15 @@ static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, show_adc, NULL, 1);
static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, show_adc, NULL, 2); static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, show_adc, NULL, 2);
static SENSOR_DEVICE_ATTR(in4_input, S_IRUGO, show_adc, NULL, 3); static SENSOR_DEVICE_ATTR(in4_input, S_IRUGO, show_adc, NULL, 3);
static struct attribute *ad7416_attributes[] = { static struct attribute *ad7416_attrs[] = {
&sensor_dev_attr_temp1_max.dev_attr.attr, &sensor_dev_attr_temp1_max.dev_attr.attr,
&sensor_dev_attr_temp1_max_hyst.dev_attr.attr, &sensor_dev_attr_temp1_max_hyst.dev_attr.attr,
&sensor_dev_attr_temp1_input.dev_attr.attr, &sensor_dev_attr_temp1_input.dev_attr.attr,
NULL NULL
}; };
ATTRIBUTE_GROUPS(ad7416);
static struct attribute *ad7417_attributes[] = { static struct attribute *ad7417_attrs[] = {
&sensor_dev_attr_temp1_max.dev_attr.attr, &sensor_dev_attr_temp1_max.dev_attr.attr,
&sensor_dev_attr_temp1_max_hyst.dev_attr.attr, &sensor_dev_attr_temp1_max_hyst.dev_attr.attr,
&sensor_dev_attr_temp1_input.dev_attr.attr, &sensor_dev_attr_temp1_input.dev_attr.attr,
@ -172,14 +172,16 @@ static struct attribute *ad7417_attributes[] = {
&sensor_dev_attr_in4_input.dev_attr.attr, &sensor_dev_attr_in4_input.dev_attr.attr,
NULL NULL
}; };
ATTRIBUTE_GROUPS(ad7417);
static struct attribute *ad7418_attributes[] = { static struct attribute *ad7418_attrs[] = {
&sensor_dev_attr_temp1_max.dev_attr.attr, &sensor_dev_attr_temp1_max.dev_attr.attr,
&sensor_dev_attr_temp1_max_hyst.dev_attr.attr, &sensor_dev_attr_temp1_max_hyst.dev_attr.attr,
&sensor_dev_attr_temp1_input.dev_attr.attr, &sensor_dev_attr_temp1_input.dev_attr.attr,
&sensor_dev_attr_in1_input.dev_attr.attr, &sensor_dev_attr_in1_input.dev_attr.attr,
NULL NULL
}; };
ATTRIBUTE_GROUPS(ad7418);
static void ad7418_init_client(struct i2c_client *client) static void ad7418_init_client(struct i2c_client *client)
{ {
@ -201,70 +203,52 @@ static void ad7418_init_client(struct i2c_client *client)
static int ad7418_probe(struct i2c_client *client, static int ad7418_probe(struct i2c_client *client,
const struct i2c_device_id *id) const struct i2c_device_id *id)
{ {
struct device *dev = &client->dev;
struct i2c_adapter *adapter = client->adapter; struct i2c_adapter *adapter = client->adapter;
struct ad7418_data *data; struct ad7418_data *data;
int err; struct device *hwmon_dev;
const struct attribute_group **attr_groups = NULL;
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA |
I2C_FUNC_SMBUS_WORD_DATA)) I2C_FUNC_SMBUS_WORD_DATA))
return -EOPNOTSUPP; return -EOPNOTSUPP;
data = devm_kzalloc(&client->dev, sizeof(struct ad7418_data), data = devm_kzalloc(dev, sizeof(struct ad7418_data), GFP_KERNEL);
GFP_KERNEL);
if (!data) if (!data)
return -ENOMEM; return -ENOMEM;
i2c_set_clientdata(client, data); i2c_set_clientdata(client, data);
mutex_init(&data->lock); mutex_init(&data->lock);
data->client = client;
data->type = id->driver_data; data->type = id->driver_data;
switch (data->type) { switch (data->type) {
case ad7416: case ad7416:
data->adc_max = 0; data->adc_max = 0;
data->attrs.attrs = ad7416_attributes; attr_groups = ad7416_groups;
break; break;
case ad7417: case ad7417:
data->adc_max = 4; data->adc_max = 4;
data->attrs.attrs = ad7417_attributes; attr_groups = ad7417_groups;
break; break;
case ad7418: case ad7418:
data->adc_max = 1; data->adc_max = 1;
data->attrs.attrs = ad7418_attributes; attr_groups = ad7418_groups;
break; break;
} }
dev_info(&client->dev, "%s chip found\n", client->name); dev_info(dev, "%s chip found\n", client->name);
/* Initialize the AD7418 chip */ /* Initialize the AD7418 chip */
ad7418_init_client(client); ad7418_init_client(client);
/* Register sysfs hooks */ hwmon_dev = devm_hwmon_device_register_with_groups(dev,
err = sysfs_create_group(&client->dev.kobj, &data->attrs); client->name,
if (err) data, attr_groups);
return err; return PTR_ERR_OR_ZERO(hwmon_dev);
data->hwmon_dev = hwmon_device_register(&client->dev);
if (IS_ERR(data->hwmon_dev)) {
err = PTR_ERR(data->hwmon_dev);
goto exit_remove;
}
return 0;
exit_remove:
sysfs_remove_group(&client->dev.kobj, &data->attrs);
return err;
}
static int ad7418_remove(struct i2c_client *client)
{
struct ad7418_data *data = i2c_get_clientdata(client);
hwmon_device_unregister(data->hwmon_dev);
sysfs_remove_group(&client->dev.kobj, &data->attrs);
return 0;
} }
static const struct i2c_device_id ad7418_id[] = { static const struct i2c_device_id ad7418_id[] = {
@ -280,7 +264,6 @@ static struct i2c_driver ad7418_driver = {
.name = "ad7418", .name = "ad7418",
}, },
.probe = ad7418_probe, .probe = ad7418_probe,
.remove = ad7418_remove,
.id_table = ad7418_id, .id_table = ad7418_id,
}; };