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hwmon: (f75375s) Add new style bindings

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Following the example of David Brownell's work on lm75:

 - Create a second driver struct, using new-style driver binding methods.

 - Rename the old driver struct as f75375_legacy_driver.

 - Make the legacy bind/unbind logic delegate all its work.

Signed-off-by: Riku Voipio <riku.voipio@movial.fi>
Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
This commit is contained in:
Riku Voipio 2007-10-16 12:46:49 +03:00 committed by Mark M. Hoffman
parent 4bfe66048e
commit 620c142db2
1 changed files with 83 additions and 26 deletions
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109
drivers/hwmon/f75375s.c
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@ -86,7 +86,7 @@ I2C_CLIENT_INSMOD_2(f75373, f75375);
struct f75375_data {
unsigned short addr;
struct i2c_client client;
struct i2c_client *client;
struct device *hwmon_dev;
const char *name;
@ -116,13 +116,23 @@ struct f75375_data {
static int f75375_attach_adapter(struct i2c_adapter *adapter);
static int f75375_detect(struct i2c_adapter *adapter, int address, int kind);
static int f75375_detach_client(struct i2c_client *client);
static int f75375_probe(struct i2c_client *client);
static int f75375_remove(struct i2c_client *client);
static struct i2c_driver f75375_legacy_driver = {
.driver = {
.name = "f75375_legacy",
},
.attach_adapter = f75375_attach_adapter,
.detach_client = f75375_detach_client,
};
static struct i2c_driver f75375_driver = {
.driver = {
.name = "f75375",
},
.attach_adapter = f75375_attach_adapter,
.detach_client = f75375_detach_client,
.probe = f75375_probe,
.remove = f75375_remove,
};
static inline int f75375_read8(struct i2c_client *client, u8 reg)
@ -580,12 +590,9 @@ static const struct attribute_group f75375_group = {
static int f75375_detach_client(struct i2c_client *client)
{
struct f75375_data *data = i2c_get_clientdata(client);
int err;
hwmon_device_unregister(data->hwmon_dev);
sysfs_remove_group(&client->dev.kobj, &f75375_group);
f75375_remove(client);
err = i2c_detach_client(client);
if (err) {
dev_err(&client->dev,
@ -593,7 +600,60 @@ static int f75375_detach_client(struct i2c_client *client)
"client not detached.\n");
return err;
}
kfree(client);
return 0;
}
static int f75375_probe(struct i2c_client *client)
{
struct f75375_data *data = i2c_get_clientdata(client);
int err;
if (!i2c_check_functionality(client->adapter,
I2C_FUNC_SMBUS_BYTE_DATA))
return -EIO;
if (!(data = kzalloc(sizeof(struct f75375_data), GFP_KERNEL)))
return -ENOMEM;
i2c_set_clientdata(client, data);
data->client = client;
mutex_init(&data->update_lock);
if (strcmp(client->name, "f75375") == 0)
data->kind = f75375;
else if (strcmp(client->name, "f75373") == 0)
data->kind = f75373;
else {
dev_err(&client->dev, "Unsupported device: %s\n", client->name);
return -ENODEV;
}
if ((err = sysfs_create_group(&client->dev.kobj, &f75375_group)))
goto exit_free;
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, &f75375_group);
exit_free:
kfree(data);
i2c_set_clientdata(client, NULL);
return err;
}
static int f75375_remove(struct i2c_client *client)
{
struct f75375_data *data = i2c_get_clientdata(client);
hwmon_device_unregister(data->hwmon_dev);
sysfs_remove_group(&client->dev.kobj, &f75375_group);
kfree(data);
i2c_set_clientdata(client, NULL);
return 0;
}
@ -608,20 +668,17 @@ static int f75375_attach_adapter(struct i2c_adapter *adapter)
static int f75375_detect(struct i2c_adapter *adapter, int address, int kind)
{
struct i2c_client *client;
struct f75375_data *data;
u8 version = 0;
int err = 0;
const char *name = "";
if (!(data = kzalloc(sizeof(struct f75375_data), GFP_KERNEL))) {
if (!(client = kzalloc(sizeof(*client), GFP_KERNEL))) {
err = -ENOMEM;
goto exit;
}
client = &data->client;
i2c_set_clientdata(client, data);
client->addr = address;
client->adapter = adapter;
client->driver = &f75375_driver;
client->driver = &f75375_legacy_driver;
if (kind < 0) {
u16 vendid = f75375_read16(client, F75375_REG_VENDOR);
@ -644,42 +701,42 @@ static int f75375_detect(struct i2c_adapter *adapter, int address, int kind)
} else if (kind == f75373) {
name = "f75373";
}
dev_info(&adapter->dev, "found %s version: %02X\n", name, version);
strlcpy(client->name, name, I2C_NAME_SIZE);
data->kind = kind;
mutex_init(&data->update_lock);
if ((err = i2c_attach_client(client)))
goto exit_free;
if ((err = sysfs_create_group(&client->dev.kobj, &f75375_group)))
if ((err = f75375_probe(client)) < 0)
goto exit_detach;
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, &f75375_group);
exit_detach:
i2c_detach_client(client);
exit_free:
kfree(data);
kfree(client);
exit:
return err;
}
static int __init sensors_f75375_init(void)
{
return i2c_add_driver(&f75375_driver);
int status;
status = i2c_add_driver(&f75375_driver);
if (status)
return status;
status = i2c_add_driver(&f75375_legacy_driver);
if (status)
i2c_del_driver(&f75375_driver);
return status;
}
static void __exit sensors_f75375_exit(void)
{
i2c_del_driver(&f75375_legacy_driver);
i2c_del_driver(&f75375_driver);
}