The new-style smsc47m192 driver implements the optional detect()
callback to cover the use cases of the legacy driver.
Signed-off-by: Jean Delvare <khali at linux-fr.org>
Cc: Hartmut Rick <linux at rick.claranet.de>
---
drivers/hwmon/smsc47m192.c | 102 +++++++++++++++++++-------------------------
1 file changed, 46 insertions(+), 56 deletions(-)
--- linux-2.6.26-rc9.orig/drivers/hwmon/smsc47m192.c 2008-07-12 09:20:29.000000000 +0200
+++ linux-2.6.26-rc9/drivers/hwmon/smsc47m192.c 2008-07-12 10:27:12.000000000 +0200
@@ -96,7 +96,6 @@ static inline int TEMP_FROM_REG(s8 val)
}
struct smsc47m192_data {
- struct i2c_client client;
struct device *hwmon_dev;
struct mutex update_lock;
char valid; /* !=0 if following fields are valid */
@@ -114,18 +113,29 @@ struct smsc47m192_data {
u8 vrm;
};
-static int smsc47m192_attach_adapter(struct i2c_adapter *adapter);
-static int smsc47m192_detect(struct i2c_adapter *adapter, int address,
- int kind);
-static int smsc47m192_detach_client(struct i2c_client *client);
+static int smsc47m192_probe(struct i2c_client *client,
+ const struct i2c_device_id *id);
+static int smsc47m192_detect(struct i2c_client *client, int kind,
+ struct i2c_board_info *info);
+static int smsc47m192_remove(struct i2c_client *client);
static struct smsc47m192_data *smsc47m192_update_device(struct device *dev);
+static const struct i2c_device_id smsc47m192_id[] = {
+ { "smsc47m192", smsc47m192 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, smsc47m192_id);
+
static struct i2c_driver smsc47m192_driver = {
+ .class = I2C_CLASS_HWMON,
.driver = {
.name = "smsc47m192",
},
- .attach_adapter = smsc47m192_attach_adapter,
- .detach_client = smsc47m192_detach_client,
+ .probe = smsc47m192_probe,
+ .remove = smsc47m192_remove,
+ .id_table = smsc47m192_id,
+ .detect = smsc47m192_detect,
+ .address_data = &addr_data,
};
/* Voltages */
@@ -440,17 +450,6 @@ static const struct attribute_group smsc
.attrs = smsc47m192_attributes_in4,
};
-/* This function is called when:
- * smsc47m192_driver is inserted (when this module is loaded), for each
- available adapter
- * when a new adapter is inserted (and smsc47m192_driver is still present) */
-static int smsc47m192_attach_adapter(struct i2c_adapter *adapter)
-{
- if (!(adapter->class & I2C_CLASS_HWMON))
- return 0;
- return i2c_probe(adapter, &addr_data, smsc47m192_detect);
-}
-
static void smsc47m192_init_client(struct i2c_client *client)
{
int i;
@@ -481,31 +480,15 @@ static void smsc47m192_init_client(struc
}
}
-/* This function is called by i2c_probe */
-static int smsc47m192_detect(struct i2c_adapter *adapter, int address,
- int kind)
+/* Return 0 if detection is successful, -ENODEV otherwise */
+static int smsc47m192_detect(struct i2c_client *client, int kind,
+ struct i2c_board_info *info)
{
- struct i2c_client *client;
- struct smsc47m192_data *data;
- int err = 0;
- int version, config;
+ struct i2c_adapter *adapter = client->adapter;
+ int version;
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
- goto exit;
-
- if (!(data = kzalloc(sizeof(struct smsc47m192_data), GFP_KERNEL))) {
- err = -ENOMEM;
- goto exit;
- }
-
- client = &data->client;
- i2c_set_clientdata(client, data);
- client->addr = address;
- client->adapter = adapter;
- client->driver = &smsc47m192_driver;
-
- if (kind == 0)
- kind = smsc47m192;
+ return -ENODEV;
/* Detection criteria from sensors_detect script */
if (kind < 0) {
@@ -523,26 +506,39 @@ static int smsc47m192_detect(struct i2c_
} else {
dev_dbg(&adapter->dev,
"SMSC47M192 detection failed at 0x%02x\n",
- address);
- goto exit_free;
+ client->addr);
+ return -ENODEV;
}
}
- /* Fill in the remaining client fields and put into the global list */
- strlcpy(client->name, "smsc47m192", I2C_NAME_SIZE);
+ strlcpy(info->type, "smsc47m192", I2C_NAME_SIZE);
+
+ return 0;
+}
+
+static int smsc47m192_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct smsc47m192_data *data;
+ int config;
+ int err;
+
+ data = kzalloc(sizeof(struct smsc47m192_data), GFP_KERNEL);
+ if (!data) {
+ err = -ENOMEM;
+ goto exit;
+ }
+
+ i2c_set_clientdata(client, data);
data->vrm = vid_which_vrm();
mutex_init(&data->update_lock);
- /* Tell the I2C layer a new client has arrived */
- if ((err = i2c_attach_client(client)))
- goto exit_free;
-
/* Initialize the SMSC47M192 chip */
smsc47m192_init_client(client);
/* Register sysfs hooks */
if ((err = sysfs_create_group(&client->dev.kobj, &smsc47m192_group)))
- goto exit_detach;
+ goto exit_free;
/* Pin 110 is either in4 (+12V) or VID4 */
config = i2c_smbus_read_byte_data(client, SMSC47M192_REG_CONFIG);
@@ -563,26 +559,20 @@ static int smsc47m192_detect(struct i2c_
exit_remove_files:
sysfs_remove_group(&client->dev.kobj, &smsc47m192_group);
sysfs_remove_group(&client->dev.kobj, &smsc47m192_group_in4);
-exit_detach:
- i2c_detach_client(client);
exit_free:
kfree(data);
exit:
return err;
}
-static int smsc47m192_detach_client(struct i2c_client *client)
+static int smsc47m192_remove(struct i2c_client *client)
{
struct smsc47m192_data *data = i2c_get_clientdata(client);
- int err;
hwmon_device_unregister(data->hwmon_dev);
sysfs_remove_group(&client->dev.kobj, &smsc47m192_group);
sysfs_remove_group(&client->dev.kobj, &smsc47m192_group_in4);
- if ((err = i2c_detach_client(client)))
- return err;
-
kfree(data);
return 0;
--
Jean Delvare
