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hwmon: (lm73) Convert to use devm_hwmon_device_register_with_groups

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

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Guenter Roeck 2013-09-01 18:32:52 -07:00
parent 9bd024e9fd
commit 3710263f13
1 changed files with 22 additions and 48 deletions
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70
drivers/hwmon/lm73.c
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@ -55,7 +55,7 @@ static const unsigned short lm73_convrates[] = {
};
struct lm73_data {
struct device *hwmon_dev;
struct i2c_client *client;
struct mutex lock;
u8 ctrl; /* control register value */
};
@ -66,7 +66,7 @@ static ssize_t set_temp(struct device *dev, struct device_attribute *da,
const char *buf, size_t count)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
struct i2c_client *client = to_i2c_client(dev);
struct lm73_data *data = dev_get_drvdata(dev);
long temp;
short value;
s32 err;
@ -77,7 +77,7 @@ static ssize_t set_temp(struct device *dev, struct device_attribute *da,
/* Write value */
value = clamp_val(temp / 250, LM73_TEMP_MIN, LM73_TEMP_MAX) << 5;
err = i2c_smbus_write_word_swapped(client, attr->index, value);
err = i2c_smbus_write_word_swapped(data->client, attr->index, value);
return (err < 0) ? err : count;
}
@ -85,10 +85,10 @@ static ssize_t show_temp(struct device *dev, struct device_attribute *da,
char *buf)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
struct i2c_client *client = to_i2c_client(dev);
struct lm73_data *data = dev_get_drvdata(dev);
int temp;
s32 err = i2c_smbus_read_word_swapped(client, attr->index);
s32 err = i2c_smbus_read_word_swapped(data->client, attr->index);
if (err < 0)
return err;
@ -101,8 +101,7 @@ static ssize_t show_temp(struct device *dev, struct device_attribute *da,
static ssize_t set_convrate(struct device *dev, struct device_attribute *da,
const char *buf, size_t count)
{
struct i2c_client *client = to_i2c_client(dev);
struct lm73_data *data = i2c_get_clientdata(client);
struct lm73_data *data = dev_get_drvdata(dev);
unsigned long convrate;
s32 err;
int res = 0;
@ -124,7 +123,8 @@ static ssize_t set_convrate(struct device *dev, struct device_attribute *da,
mutex_lock(&data->lock);
data->ctrl &= LM73_CTRL_TO_MASK;
data->ctrl |= res << LM73_CTRL_RES_SHIFT;
err = i2c_smbus_write_byte_data(client, LM73_REG_CTRL, data->ctrl);
err = i2c_smbus_write_byte_data(data->client, LM73_REG_CTRL,
data->ctrl);
mutex_unlock(&data->lock);
if (err < 0)
@ -136,8 +136,7 @@ static ssize_t set_convrate(struct device *dev, struct device_attribute *da,
static ssize_t show_convrate(struct device *dev, struct device_attribute *da,
char *buf)
{
struct i2c_client *client = to_i2c_client(dev);
struct lm73_data *data = i2c_get_clientdata(client);
struct lm73_data *data = dev_get_drvdata(dev);
int res;
res = (data->ctrl & LM73_CTRL_RES_MASK) >> LM73_CTRL_RES_SHIFT;
@ -147,13 +146,12 @@ static ssize_t show_convrate(struct device *dev, struct device_attribute *da,
static ssize_t show_maxmin_alarm(struct device *dev,
struct device_attribute *da, char *buf)
{
struct i2c_client *client = to_i2c_client(dev);
struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
struct lm73_data *data = i2c_get_clientdata(client);
struct lm73_data *data = dev_get_drvdata(dev);
s32 ctrl;
mutex_lock(&data->lock);
ctrl = i2c_smbus_read_byte_data(client, LM73_REG_CTRL);
ctrl = i2c_smbus_read_byte_data(data->client, LM73_REG_CTRL);
if (ctrl < 0)
goto abort;
data->ctrl = ctrl;
@ -183,7 +181,7 @@ static SENSOR_DEVICE_ATTR(temp1_max_alarm, S_IRUGO,
static SENSOR_DEVICE_ATTR(temp1_min_alarm, S_IRUGO,
show_maxmin_alarm, NULL, LM73_CTRL_LO_SHIFT);
static struct attribute *lm73_attributes[] = {
static struct attribute *lm73_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,
@ -192,10 +190,7 @@ static struct attribute *lm73_attributes[] = {
&sensor_dev_attr_temp1_min_alarm.dev_attr.attr,
NULL
};
static const struct attribute_group lm73_group = {
.attrs = lm73_attributes,
};
ATTRIBUTE_GROUPS(lm73);
/*-----------------------------------------------------------------------*/
@ -204,16 +199,16 @@ static const struct attribute_group lm73_group = {
static int
lm73_probe(struct i2c_client *client, const struct i2c_device_id *id)
{
int status;
struct device *dev = &client->dev;
struct device *hwmon_dev;
struct lm73_data *data;
int ctrl;
data = devm_kzalloc(&client->dev, sizeof(struct lm73_data),
GFP_KERNEL);
data = devm_kzalloc(dev, sizeof(struct lm73_data), GFP_KERNEL);
if (!data)
return -ENOMEM;
i2c_set_clientdata(client, data);
data->client = client;
mutex_init(&data->lock);
ctrl = i2c_smbus_read_byte_data(client, LM73_REG_CTRL);
@ -221,33 +216,13 @@ lm73_probe(struct i2c_client *client, const struct i2c_device_id *id)
return ctrl;
data->ctrl = ctrl;
/* Register sysfs hooks */
status = sysfs_create_group(&client->dev.kobj, &lm73_group);
if (status)
return status;
hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name,
data, lm73_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)) {
status = PTR_ERR(data->hwmon_dev);
goto exit_remove;
}
dev_info(dev, "sensor '%s'\n", client->name);
dev_info(&client->dev, "%s: sensor '%s'\n",
dev_name(data->hwmon_dev), client->name);
return 0;
exit_remove:
sysfs_remove_group(&client->dev.kobj, &lm73_group);
return status;
}
static int lm73_remove(struct i2c_client *client)
{
struct lm73_data *data = i2c_get_clientdata(client);
hwmon_device_unregister(data->hwmon_dev);
sysfs_remove_group(&client->dev.kobj, &lm73_group);
return 0;
}
@ -300,7 +275,6 @@ static struct i2c_driver lm73_driver = {
.name = "lm73",
},
.probe = lm73_probe,
.remove = lm73_remove,
.id_table = lm73_ids,
.detect = lm73_detect,
.address_list = normal_i2c,