hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

hwmon: (lm95241) Convert to new-style i2c driver 

The legacy i2c binding model is going away really soon now, so convert
the lm95241 driver to the new binding model or it will break.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Davide Rizzo <elpa.rizzo@gmail.com>
This commit is contained in:
Jean Delvare 2009-04-07 15:32:59 +02:00
parent d508afb437
commit 797eaa4b02
1 changed files with 47 additions and 65 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

112
drivers/hwmon/lm95241.c
View File

@ -87,25 +87,11 @@ I2C_CLIENT_INSMOD_1(lm95241);
(val_h)) * 1000 + (val_l) * 1000 / 256)
/* Functions declaration */
static int lm95241_attach_adapter(struct i2c_adapter *adapter);
static int lm95241_detect(struct i2c_adapter *adapter, int address,
int kind);
static void lm95241_init_client(struct i2c_client *client);
static int lm95241_detach_client(struct i2c_client *client);
static struct lm95241_data *lm95241_update_device(struct device *dev);
/* Driver data (common to all clients) */
static struct i2c_driver lm95241_driver = {
.driver = {
.name = "lm95241",
},
.attach_adapter = lm95241_attach_adapter,
.detach_client = lm95241_detach_client,
};
/* Client data (each client gets its own) */
struct lm95241_data {
struct i2c_client client;
struct device *hwmon_dev;
struct mutex update_lock;
unsigned long last_updated, rate; /* in jiffies */
@ -323,42 +309,16 @@ static const struct attribute_group lm95241_group = {
.attrs = lm95241_attributes,
};
/* Init/exit code */
static int lm95241_attach_adapter(struct i2c_adapter *adapter)
/* Return 0 if detection is successful, -ENODEV otherwise */
static int lm95241_detect(struct i2c_client *new_client, int kind,
struct i2c_board_info *info)
{
if (!(adapter->class & I2C_CLASS_HWMON))
return 0;
return i2c_probe(adapter, &addr_data, lm95241_detect);
}
/*
* The following function does more than just detection. If detection
* succeeds, it also registers the new chip.
*/
static int lm95241_detect(struct i2c_adapter *adapter, int address, int kind)
{
struct i2c_client *new_client;
struct lm95241_data *data;
int err = 0;
struct i2c_adapter *adapter = new_client->adapter;
int address = new_client->addr;
const char *name = "";
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
goto exit;
data = kzalloc(sizeof(struct lm95241_data), GFP_KERNEL);
if (!data) {
err = -ENOMEM;
goto exit;
}
/* The common I2C client data is placed right before the
LM95241-specific data. */
new_client = &data->client;
i2c_set_clientdata(new_client, data);
new_client->addr = address;
new_client->adapter = adapter;
new_client->driver = &lm95241_driver;
new_client->flags = 0;
return -ENODEV;
/*
* Now we do the remaining detection. A negative kind means that
@ -378,7 +338,7 @@ static int lm95241_detect(struct i2c_adapter *adapter, int address, int kind)
dev_dbg(&adapter->dev,
"LM95241 detection failed at 0x%02x.\n",
address);
goto exit_free;
return -ENODEV;
}
}
@ -392,31 +352,40 @@ static int lm95241_detect(struct i2c_adapter *adapter, int address, int kind)
if (kind <= 0) { /* identification failed */
dev_info(&adapter->dev, "Unsupported chip\n");
goto exit_free;
return -ENODEV;
}
}
}
/* Fill the i2c board info */
if (kind == lm95241)
name = "lm95241";
strlcpy(info->type, name, I2C_NAME_SIZE);
return 0;
}
/* We can fill in the remaining client fields */
strlcpy(new_client->name, name, I2C_NAME_SIZE);
data->valid = 0;
static int lm95241_probe(struct i2c_client *new_client,
const struct i2c_device_id *id)
{
struct lm95241_data *data;
int err;
data = kzalloc(sizeof(struct lm95241_data), GFP_KERNEL);
if (!data) {
err = -ENOMEM;
goto exit;
}
i2c_set_clientdata(new_client, data);
mutex_init(&data->update_lock);
/* Tell the I2C layer a new client has arrived */
err = i2c_attach_client(new_client);
if (err)
goto exit_free;
/* Initialize the LM95241 chip */
lm95241_init_client(new_client);
/* Register sysfs hooks */
err = sysfs_create_group(&new_client->dev.kobj, &lm95241_group);
if (err)
goto exit_detach;
goto exit_free;
data->hwmon_dev = hwmon_device_register(&new_client->dev);
if (IS_ERR(data->hwmon_dev)) {
@ -428,8 +397,6 @@ static int lm95241_detect(struct i2c_adapter *adapter, int address, int kind)
exit_remove_files:
sysfs_remove_group(&new_client->dev.kobj, &lm95241_group);
exit_detach:
i2c_detach_client(new_client);
exit_free:
kfree(data);
exit:
@ -456,18 +423,14 @@ static void lm95241_init_client(struct i2c_client *client)
data->model);
}
static int lm95241_detach_client(struct i2c_client *client)
static int lm95241_remove(struct i2c_client *client)
{
struct lm95241_data *data = i2c_get_clientdata(client);
int err;
hwmon_device_unregister(data->hwmon_dev);
sysfs_remove_group(&client->dev.kobj, &lm95241_group);
err = i2c_detach_client(client);
if (err)
return err;
i2c_set_clientdata(client, NULL);
kfree(data);
return 0;
}
@ -509,6 +472,25 @@ static struct lm95241_data *lm95241_update_device(struct device *dev)
return data;
}
/* Driver data (common to all clients) */
static const struct i2c_device_id lm95241_id[] = {
{ "lm95241", lm95241 },
{ }
};
MODULE_DEVICE_TABLE(i2c, lm95241_id);
static struct i2c_driver lm95241_driver = {
.class = I2C_CLASS_HWMON,
.driver = {
.name = "lm95241",
},
.probe = lm95241_probe,
.remove = lm95241_remove,
.id_table = lm95241_id,
.detect = lm95241_detect,
.address_data = &addr_data,
};
static int __init sensors_lm95241_init(void)
{
return i2c_add_driver(&lm95241_driver);