static int adm1025_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct device *dev = &client->dev;
struct device *hwmon_dev;
struct adm1025_data *data;
u8 config;
data = devm_kzalloc(dev, sizeof(struct adm1025_data), GFP_KERNEL);
if (!data)
return -ENOMEM;
i2c_set_clientdata(client, data);
data->client = client;
mutex_init(&data->update_lock);
/* Initialize the ADM1025 chip */
adm1025_init_client(client);
/* sysfs hooks */
data->groups[0] = &adm1025_group;
/* Pin 11 is either in4 (+12V) or VID4 */
config = i2c_smbus_read_byte_data(client, ADM1025_REG_CONFIG);
if (!(config & 0x20))
data->groups[1] = &adm1025_group_in4;
hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name,
data, data->groups);
return PTR_ERR_OR_ZERO(hwmon_dev);
}
static int adm1025_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct adm1025_data *data;
int err;
u8 config;
data = kzalloc(sizeof(struct adm1025_data), GFP_KERNEL);
if (!data) {
err = -ENOMEM;
goto exit;
}
i2c_set_clientdata(client, data);
mutex_init(&data->update_lock);
/* Initialize the ADM1025 chip */
adm1025_init_client(client);
/* Register sysfs hooks */
err = sysfs_create_group(&client->dev.kobj, &adm1025_group);
if (err)
goto exit_free;
/* Pin 11 is either in4 (+12V) or VID4 */
config = i2c_smbus_read_byte_data(client, ADM1025_REG_CONFIG);
if (!(config & 0x20)) {
err = sysfs_create_group(&client->dev.kobj, &adm1025_group_in4);
if (err)
goto exit_remove;
}
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, &adm1025_group);
sysfs_remove_group(&client->dev.kobj, &adm1025_group_in4);
exit_free:
kfree(data);
exit:
return err;
}
static int adm1025_detect(struct i2c_adapter *adapter, int address,
unsigned short flags, int kind)
{
int i;
struct i2c_client *new_client;
struct adm1025_data *data;
int err = 0;
const char *type_name = "";
const char *client_name = "";
/* Make sure we aren't probing the ISA bus!! This is just a safety check
at this moment; i2c_detect really won't call us. */
#ifdef DEBUG
if (i2c_is_isa_adapter(adapter)) {
printk
("adm1025.o: adm1025_detect called for an ISA bus adapter?!?\n");
return 0;
}
#endif
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
goto ERROR0;
/* OK. For now, we presume we have a valid client. We now create the
client structure, even though we cannot fill it completely yet.
But it allows us to access adm1025_{read,write}_value. */
if (!(new_client = kmalloc(sizeof(struct i2c_client) +
sizeof(struct adm1025_data),
GFP_KERNEL))) {
err = -ENOMEM;
goto ERROR0;
}
data = (struct adm1025_data *) (new_client + 1);
new_client->addr = address;
new_client->data = data;
new_client->adapter = adapter;
new_client->driver = &adm1025_driver;
new_client->flags = 0;
/* Now, we do the remaining detection. */
if (kind < 0) {
if((adm1025_read_value(new_client,ADM1025_REG_CONFIG) & 0x80) != 0x00)
goto ERROR1;
}
/* Determine the chip type. */
if (kind <= 0) {
i = adm1025_read_value(new_client, ADM1025_REG_COMPANY_ID);
if (i == 0x41)
kind = adm1025;
else {
if (kind == 0)
printk
("adm1025.o: Ignoring 'force' parameter for unknown chip at "
"adapter %d, address 0x%02x\n",
i2c_adapter_id(adapter), address);
goto ERROR1;
}
}
if (kind == adm1025) {
type_name = "adm1025";
client_name = "ADM1025 chip";
} else {
#ifdef DEBUG
printk("adm1025.o: Internal error: unknown kind (%d)?!?",
kind);
#endif
goto ERROR1;
}
/* Fill in the remaining client fields and put it into the global list */
strcpy(new_client->name, client_name);
data->type = kind;
new_client->id = adm1025_id++;
data->valid = 0;
init_MUTEX(&data->update_lock);
/* Tell the I2C layer a new client has arrived */
if ((err = i2c_attach_client(new_client)))
goto ERROR3;
/* Register a new directory entry with module sensors */
if ((i = i2c_register_entry(new_client,
type_name,
adm1025_dir_table_template,
THIS_MODULE)) < 0) {
err = i;
goto ERROR4;
}
data->sysctl_id = i;
/* Initialize the ADM1025 chip */
adm1025_init_client(new_client);
return 0;
/* OK, this is not exactly good programming practice, usually. But it is
very code-efficient in this case. */
ERROR4:
i2c_detach_client(new_client);
ERROR3:
ERROR1:
kfree(new_client);
ERROR0:
return err;
}