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hwmon: (emc1403) Convert to use devm_hwmon_device_register_with_groups

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Simplify code and reduce its size.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Guenter Roeck 2013-09-29 11:49:53 -07:00
parent 3f08d7f49f
commit 454aee17fd
1 changed files with 26 additions and 47 deletions
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73
drivers/hwmon/emc1403.c
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@ -40,7 +40,7 @@
#define THERMAL_REVISION_REG 0xff
struct thermal_data {
struct device *hwmon_dev;
struct i2c_client *client;
struct mutex mutex;
/*
* Cache the hyst value so we don't keep re-reading it. In theory
@ -53,10 +53,11 @@ struct thermal_data {
static ssize_t show_temp(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct i2c_client *client = to_i2c_client(dev);
struct sensor_device_attribute *sda = to_sensor_dev_attr(attr);
int retval = i2c_smbus_read_byte_data(client, sda->index);
struct thermal_data *data = dev_get_drvdata(dev);
int retval;
retval = i2c_smbus_read_byte_data(data->client, sda->index);
if (retval < 0)
return retval;
return sprintf(buf, "%d000\n", retval);
@ -65,27 +66,27 @@ static ssize_t show_temp(struct device *dev,
static ssize_t show_bit(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct i2c_client *client = to_i2c_client(dev);
struct sensor_device_attribute_2 *sda = to_sensor_dev_attr_2(attr);
int retval = i2c_smbus_read_byte_data(client, sda->nr);
struct thermal_data *data = dev_get_drvdata(dev);
int retval;
retval = i2c_smbus_read_byte_data(data->client, sda->nr);
if (retval < 0)
return retval;
retval &= sda->index;
return sprintf(buf, "%d\n", retval ? 1 : 0);
return sprintf(buf, "%d\n", !!(retval & sda->index));
}
static ssize_t store_temp(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct sensor_device_attribute *sda = to_sensor_dev_attr(attr);
struct i2c_client *client = to_i2c_client(dev);
struct thermal_data *data = dev_get_drvdata(dev);
unsigned long val;
int retval;
if (kstrtoul(buf, 10, &val))
return -EINVAL;
retval = i2c_smbus_write_byte_data(client, sda->index,
retval = i2c_smbus_write_byte_data(data->client, sda->index,
DIV_ROUND_CLOSEST(val, 1000));
if (retval < 0)
return retval;
@ -95,9 +96,9 @@ static ssize_t store_temp(struct device *dev,
static ssize_t store_bit(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct i2c_client *client = to_i2c_client(dev);
struct thermal_data *data = i2c_get_clientdata(client);
struct sensor_device_attribute_2 *sda = to_sensor_dev_attr_2(attr);
struct thermal_data *data = dev_get_drvdata(dev);
struct i2c_client *client = data->client;
unsigned long val;
int retval;
@ -124,9 +125,9 @@ fail:
static ssize_t show_hyst(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct i2c_client *client = to_i2c_client(dev);
struct thermal_data *data = i2c_get_clientdata(client);
struct sensor_device_attribute *sda = to_sensor_dev_attr(attr);
struct thermal_data *data = dev_get_drvdata(dev);
struct i2c_client *client = data->client;
int retval;
int hyst;
@ -147,9 +148,9 @@ static ssize_t show_hyst(struct device *dev,
static ssize_t store_hyst(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct i2c_client *client = to_i2c_client(dev);
struct thermal_data *data = i2c_get_clientdata(client);
struct sensor_device_attribute *sda = to_sensor_dev_attr(attr);
struct thermal_data *data = dev_get_drvdata(dev);
struct i2c_client *client = data->client;
int retval;
int hyst;
unsigned long val;
@ -235,7 +236,7 @@ static SENSOR_DEVICE_ATTR(temp3_crit_hyst, S_IRUGO | S_IWUSR,
static SENSOR_DEVICE_ATTR_2(power_state, S_IRUGO | S_IWUSR,
show_bit, store_bit, 0x03, 0x40);
static struct attribute *mid_att_thermal[] = {
static struct attribute *emc1403_attrs[] = {
&sensor_dev_attr_temp1_min.dev_attr.attr,
&sensor_dev_attr_temp1_max.dev_attr.attr,
&sensor_dev_attr_temp1_crit.dev_attr.attr,
@ -263,10 +264,7 @@ static struct attribute *mid_att_thermal[] = {
&sensor_dev_attr_power_state.dev_attr.attr,
NULL
};
static const struct attribute_group m_thermal_gr = {
.attrs = mid_att_thermal
};
ATTRIBUTE_GROUPS(emc1403);
static int emc1403_detect(struct i2c_client *client,
struct i2c_board_info *info)
@ -304,44 +302,26 @@ static int emc1403_detect(struct i2c_client *client,
static int emc1403_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
int res;
struct thermal_data *data;
struct device *hwmon_dev;
data = devm_kzalloc(&client->dev, sizeof(struct thermal_data),
GFP_KERNEL);
if (data == NULL)
return -ENOMEM;
i2c_set_clientdata(client, data);
data->client = client;
mutex_init(&data->mutex);
data->hyst_valid = jiffies - 1; /* Expired */
res = sysfs_create_group(&client->dev.kobj, &m_thermal_gr);
if (res) {
dev_warn(&client->dev, "create group failed\n");
return res;
}
data->hwmon_dev = hwmon_device_register(&client->dev);
if (IS_ERR(data->hwmon_dev)) {
res = PTR_ERR(data->hwmon_dev);
dev_warn(&client->dev, "register hwmon dev failed\n");
goto thermal_error;
}
hwmon_dev = hwmon_device_register_with_groups(&client->dev,
client->name, data,
emc1403_groups);
if (IS_ERR(hwmon_dev))
return PTR_ERR(hwmon_dev);
dev_info(&client->dev, "EMC1403 Thermal chip found\n");
return 0;
thermal_error:
sysfs_remove_group(&client->dev.kobj, &m_thermal_gr);
return res;
}
static int emc1403_remove(struct i2c_client *client)
{
struct thermal_data *data = i2c_get_clientdata(client);
hwmon_device_unregister(data->hwmon_dev);
sysfs_remove_group(&client->dev.kobj, &m_thermal_gr);
return 0;
}
static const unsigned short emc1403_address_list[] = {
@ -362,7 +342,6 @@ static struct i2c_driver sensor_emc1403 = {
},
.detect = emc1403_detect,
.probe = emc1403_probe,
.remove = emc1403_remove,
.id_table = emc1403_idtable,
.address_list = emc1403_address_list,
};