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authorAxel Lin <axel.lin@ingics.com>2014-07-01 18:40:29 +0400
committerGuenter Roeck <linux@roeck-us.net>2014-08-04 18:01:35 +0400
commit337076f9b6d8890682dcb7873869ef8dfa8febb2 (patch)
treececc0a7a6602679d698d35bcd9208fd3647cca1e /drivers
parent991763a91cbacf1e511ec9bea9ea8539e4d41f39 (diff)
downloadlinux-337076f9b6d8890682dcb7873869ef8dfa8febb2.tar.xz
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>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/hwmon/ad7418.c65
1 files changed, 24 insertions, 41 deletions
diff --git a/drivers/hwmon/ad7418.c b/drivers/hwmon/ad7418.c
index f7bf4299413d..a01b731ba5d7 100644
--- a/drivers/hwmon/ad7418.c
+++ b/drivers/hwmon/ad7418.c
@@ -44,8 +44,7 @@ static const u8 AD7418_REG_TEMP[] = { AD7418_REG_TEMP_IN,
AD7418_REG_TEMP_OS };
struct ad7418_data {
- struct device *hwmon_dev;
- struct attribute_group attrs;
+ struct i2c_client *client;
enum chips type;
struct mutex lock;
int adc_max; /* number of ADC channels */
@@ -57,8 +56,8 @@ struct ad7418_data {
static struct ad7418_data *ad7418_update_device(struct device *dev)
{
- struct i2c_client *client = to_i2c_client(dev);
- struct ad7418_data *data = i2c_get_clientdata(client);
+ struct ad7418_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
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)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
- struct i2c_client *client = to_i2c_client(dev);
- struct ad7418_data *data = i2c_get_clientdata(client);
+ struct ad7418_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
long 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(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_hyst.dev_attr.attr,
&sensor_dev_attr_temp1_input.dev_attr.attr,
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_hyst.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,
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_hyst.dev_attr.attr,
&sensor_dev_attr_temp1_input.dev_attr.attr,
&sensor_dev_attr_in1_input.dev_attr.attr,
NULL
};
+ATTRIBUTE_GROUPS(ad7418);
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,
const struct i2c_device_id *id)
{
+ struct device *dev = &client->dev;
struct i2c_adapter *adapter = client->adapter;
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 |
I2C_FUNC_SMBUS_WORD_DATA))
return -EOPNOTSUPP;
- data = devm_kzalloc(&client->dev, sizeof(struct ad7418_data),
- GFP_KERNEL);
+ data = devm_kzalloc(dev, sizeof(struct ad7418_data), GFP_KERNEL);
if (!data)
return -ENOMEM;
i2c_set_clientdata(client, data);
mutex_init(&data->lock);
+ data->client = client;
data->type = id->driver_data;
switch (data->type) {
case ad7416:
data->adc_max = 0;
- data->attrs.attrs = ad7416_attributes;
+ attr_groups = ad7416_groups;
break;
case ad7417:
data->adc_max = 4;
- data->attrs.attrs = ad7417_attributes;
+ attr_groups = ad7417_groups;
break;
case ad7418:
data->adc_max = 1;
- data->attrs.attrs = ad7418_attributes;
+ attr_groups = ad7418_groups;
break;
}
- dev_info(&client->dev, "%s chip found\n", client->name);
+ dev_info(dev, "%s chip found\n", client->name);
/* Initialize the AD7418 chip */
ad7418_init_client(client);
- /* Register sysfs hooks */
- err = sysfs_create_group(&client->dev.kobj, &data->attrs);
- if (err)
- return err;
-
- 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;
+ hwmon_dev = devm_hwmon_device_register_with_groups(dev,
+ client->name,
+ data, attr_groups);
+ return PTR_ERR_OR_ZERO(hwmon_dev);
}
static const struct i2c_device_id ad7418_id[] = {
@@ -280,7 +264,6 @@ static struct i2c_driver ad7418_driver = {
.name = "ad7418",
},
.probe = ad7418_probe,
- .remove = ad7418_remove,
.id_table = ad7418_id,
};