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authorAxel Lin <axel.lin@ingics.com>2014-07-01 22:31:44 +0800
committerGuenter Roeck <linux@roeck-us.net>2014-08-04 07:01:35 -0700
commit045c1391ec3b703ee00643fe9bda7cd65cd463e1 (patch)
tree368e859dca293a637df0d9d6cc603b51a4c52875 /drivers/hwmon/ad7414.c
parented67f0872be1aa516831332c732752022d4edc7c (diff)
hwmon: (ad7414) 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/hwmon/ad7414.c')
-rw-r--r--drivers/hwmon/ad7414.c57
1 files changed, 16 insertions, 41 deletions
diff --git a/drivers/hwmon/ad7414.c b/drivers/hwmon/ad7414.c
index 5d501adc3e54..763490acc0df 100644
--- a/drivers/hwmon/ad7414.c
+++ b/drivers/hwmon/ad7414.c
@@ -39,7 +39,7 @@
static u8 AD7414_REG_LIMIT[] = { AD7414_REG_T_HIGH, AD7414_REG_T_LOW };
struct ad7414_data {
- struct device *hwmon_dev;
+ struct i2c_client *client;
struct mutex lock; /* atomic read data updates */
char valid; /* !=0 if following fields are valid */
unsigned long next_update; /* In jiffies */
@@ -72,8 +72,8 @@ static inline int ad7414_write(struct i2c_client *client, u8 reg, u8 value)
static struct ad7414_data *ad7414_update_device(struct device *dev)
{
- struct i2c_client *client = to_i2c_client(dev);
- struct ad7414_data *data = i2c_get_clientdata(client);
+ struct ad7414_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
mutex_lock(&data->lock);
@@ -127,8 +127,8 @@ static ssize_t set_max_min(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
- struct i2c_client *client = to_i2c_client(dev);
- struct ad7414_data *data = i2c_get_clientdata(client);
+ struct ad7414_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
int index = to_sensor_dev_attr(attr)->index;
u8 reg = AD7414_REG_LIMIT[index];
long temp;
@@ -164,7 +164,7 @@ static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
static SENSOR_DEVICE_ATTR(temp1_min_alarm, S_IRUGO, show_alarm, NULL, 3);
static SENSOR_DEVICE_ATTR(temp1_max_alarm, S_IRUGO, show_alarm, NULL, 4);
-static struct attribute *ad7414_attributes[] = {
+static struct attribute *ad7414_attrs[] = {
&sensor_dev_attr_temp1_input.dev_attr.attr,
&sensor_dev_attr_temp1_max.dev_attr.attr,
&sensor_dev_attr_temp1_min.dev_attr.attr,
@@ -173,27 +173,25 @@ static struct attribute *ad7414_attributes[] = {
NULL
};
-static const struct attribute_group ad7414_group = {
- .attrs = ad7414_attributes,
-};
+ATTRIBUTE_GROUPS(ad7414);
static int ad7414_probe(struct i2c_client *client,
const struct i2c_device_id *dev_id)
{
+ struct device *dev = &client->dev;
struct ad7414_data *data;
+ struct device *hwmon_dev;
int conf;
- int err;
if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA |
I2C_FUNC_SMBUS_READ_WORD_DATA))
return -EOPNOTSUPP;
- data = devm_kzalloc(&client->dev, sizeof(struct ad7414_data),
- GFP_KERNEL);
+ data = devm_kzalloc(dev, sizeof(struct ad7414_data), GFP_KERNEL);
if (!data)
return -ENOMEM;
- i2c_set_clientdata(client, data);
+ data->client = client;
mutex_init(&data->lock);
dev_info(&client->dev, "chip found\n");
@@ -201,38 +199,16 @@ static int ad7414_probe(struct i2c_client *client,
/* Make sure the chip is powered up. */
conf = i2c_smbus_read_byte_data(client, AD7414_REG_CONF);
if (conf < 0)
- dev_warn(&client->dev,
- "ad7414_probe unable to read config register.\n");
+ dev_warn(dev, "ad7414_probe unable to read config register.\n");
else {
conf &= ~(1 << 7);
i2c_smbus_write_byte_data(client, AD7414_REG_CONF, conf);
}
- /* Register sysfs hooks */
- err = sysfs_create_group(&client->dev.kobj, &ad7414_group);
- 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, &ad7414_group);
- return err;
-}
-
-static int ad7414_remove(struct i2c_client *client)
-{
- struct ad7414_data *data = i2c_get_clientdata(client);
-
- hwmon_device_unregister(data->hwmon_dev);
- sysfs_remove_group(&client->dev.kobj, &ad7414_group);
- return 0;
+ hwmon_dev = devm_hwmon_device_register_with_groups(dev,
+ client->name,
+ data, ad7414_groups);
+ return PTR_ERR_OR_ZERO(hwmon_dev);
}
static const struct i2c_device_id ad7414_id[] = {
@@ -246,7 +222,6 @@ static struct i2c_driver ad7414_driver = {
.name = "ad7414",
},
.probe = ad7414_probe,
- .remove = ad7414_remove,
.id_table = ad7414_id,
};