[PATCH 09/11] hwmon: (ina209) Convert to use devm_hwmon_device_register_with_groups

Guenter Roeck
2013-09-14T17:14:23Z

Also use new macro ATTRIBUTE_GROUPS to declare attribute groups.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
---
drivers/hwmon/ina209.c | 46 ++++++++++++++++++----------------------------
1 file changed, 18 insertions(+), 28 deletions(-)

diff --git a/drivers/hwmon/ina209.c b/drivers/hwmon/ina209.c
index c6fdd5b..5378fde 100644
--- a/drivers/hwmon/ina209.c
+++ b/drivers/hwmon/ina209.c
@@ -63,7 +63,7 @@
#define INA209_SHUNT_DEFAULT 10000 /* uOhm */

struct ina209_data {
- struct device *hwmon_dev;
+ struct i2c_client *client;

struct mutex update_lock;
bool valid;
@@ -78,8 +78,8 @@ struct ina209_data {

static struct ina209_data *ina209_update_device(struct device *dev)
{
- struct i2c_client *client = to_i2c_client(dev);
- struct ina209_data *data = i2c_get_clientdata(client);
+ struct ina209_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
struct ina209_data *ret = data;
s32 val;
int i;
@@ -234,7 +234,6 @@ static ssize_t ina209_set_interval(struct device *dev,
struct device_attribute *da,
const char *buf, size_t count)
{
- struct i2c_client *client = to_i2c_client(dev);
struct ina209_data *data = ina209_update_device(dev);
long val;
u16 regval;
@@ -250,7 +249,8 @@ static ssize_t ina209_set_interval(struct device *dev,
mutex_lock(&data->update_lock);
regval = ina209_reg_from_interval(data->regs[INA209_CONFIGURATION],
val);
- i2c_smbus_write_word_swapped(client, INA209_CONFIGURATION, regval);
+ i2c_smbus_write_word_swapped(data->client, INA209_CONFIGURATION,
+ regval);
data->regs[INA209_CONFIGURATION] = regval;
data->update_interval = ina209_interval_from_reg(regval);
mutex_unlock(&data->update_lock);
@@ -260,8 +260,7 @@ static ssize_t ina209_set_interval(struct device *dev,
static ssize_t ina209_show_interval(struct device *dev,
struct device_attribute *da, char *buf)
{
- struct i2c_client *client = to_i2c_client(dev);
- struct ina209_data *data = i2c_get_clientdata(client);
+ struct ina209_data *data = dev_get_drvdata(dev);

return snprintf(buf, PAGE_SIZE, "%d\n", data->update_interval);
}
@@ -285,9 +284,9 @@ static ssize_t ina209_reset_history(struct device *dev,
const char *buf,
size_t count)
{
- struct i2c_client *client = to_i2c_client(dev);
- struct ina209_data *data = i2c_get_clientdata(client);
struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
+ struct ina209_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
u32 mask = attr->index;
long val;
int i, ret;
@@ -312,7 +311,6 @@ static ssize_t ina209_set_value(struct device *dev,
const char *buf,
size_t count)
{
- struct i2c_client *client = to_i2c_client(dev);
struct ina209_data *data = ina209_update_device(dev);
struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
int reg = attr->index;
@@ -332,7 +330,7 @@ static ssize_t ina209_set_value(struct device *dev,
count = ret;
goto abort;
}
- i2c_smbus_write_word_swapped(client, reg, ret);
+ i2c_smbus_write_word_swapped(data->client, reg, ret);
data->regs[reg] = ret;
abort:
mutex_unlock(&data->update_lock);
@@ -457,7 +455,7 @@ static SENSOR_DEVICE_ATTR(update_interval, S_IRUGO | S_IWUSR,
* Finally, construct an array of pointers to members of the above objects,
* as required for sysfs_create_group()
*/
-static struct attribute *ina209_attributes[] = {
+static struct attribute *ina209_attrs[] = {
&sensor_dev_attr_in0_input.dev_attr.attr,
&sensor_dev_attr_in0_input_highest.dev_attr.attr,
&sensor_dev_attr_in0_input_lowest.dev_attr.attr,
@@ -498,10 +496,7 @@ static struct attribute *ina209_attributes[] = {

NULL,
};
-
-static const struct attribute_group ina209_group = {
- .attrs = ina209_attributes,
-};
+ATTRIBUTE_GROUPS(ina209);

static void ina209_restore_conf(struct i2c_client *client,
struct ina209_data *data)
@@ -565,6 +560,7 @@ static int ina209_probe(struct i2c_client *client,
{
struct i2c_adapter *adapter = client->adapter;
struct ina209_data *data;
+ struct device *hwmon_dev;
int ret;

if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WORD_DATA))
@@ -575,27 +571,23 @@ static int ina209_probe(struct i2c_client *client,
return -ENOMEM;

i2c_set_clientdata(client, data);
+ data->client = client;
mutex_init(&data->update_lock);

ret = ina209_init_client(client, data);
if (ret)
return ret;

- /* Register sysfs hooks */
- ret = sysfs_create_group(&client->dev.kobj, &ina209_group);
- if (ret)
+ hwmon_dev = devm_hwmon_device_register_with_groups(&client->dev,
+ client->name,
+ data, ina209_groups);
+ if (IS_ERR(hwmon_dev)) {
+ ret = PTR_ERR(hwmon_dev);
goto out_restore_conf;
-
- data->hwmon_dev = hwmon_device_register(&client->dev);
- if (IS_ERR(data->hwmon_dev)) {
- ret = PTR_ERR(data->hwmon_dev);
- goto out_hwmon_device_register;
}

return 0;

-out_hwmon_device_register:
- sysfs_remove_group(&client->dev.kobj, &ina209_group);
out_restore_conf:
ina209_restore_conf(client, data);
return ret;
@@ -605,8 +597,6 @@ static int ina209_remove(struct i2c_client *client)
{
struct ina209_data *data = i2c_get_clientdata(client);

- hwmon_device_unregister(data->hwmon_dev);
- sysfs_remove_group(&client->dev.kobj, &ina209_group);
ina209_restore_conf(client, data);

return 0;
--
1.7.9.7