The new-style adm9240 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: Grant Coady <gcoady.lk at gmail.com>
---
drivers/hwmon/adm9240.c | 93 +++++++++++++++++++++++------------------------
1 file changed, 46 insertions(+), 47 deletions(-)
--- linux-2.6.26-rc9.orig/drivers/hwmon/adm9240.c 2008-07-12 09:20:31.000000000 +0200
+++ linux-2.6.26-rc9/drivers/hwmon/adm9240.c 2008-07-12 10:27:31.000000000 +0200
@@ -130,25 +130,37 @@ static inline unsigned int AOUT_FROM_REG
return SCALE(reg, 1250, 255);
}
-static int adm9240_attach_adapter(struct i2c_adapter *adapter);
-static int adm9240_detect(struct i2c_adapter *adapter, int address, int kind);
+static int adm9240_probe(struct i2c_client *client,
+ const struct i2c_device_id *id);
+static int adm9240_detect(struct i2c_client *client, int kind,
+ struct i2c_board_info *info);
static void adm9240_init_client(struct i2c_client *client);
-static int adm9240_detach_client(struct i2c_client *client);
+static int adm9240_remove(struct i2c_client *client);
static struct adm9240_data *adm9240_update_device(struct device *dev);
/* driver data */
+static const struct i2c_device_id adm9240_id[] = {
+ { "adm9240", adm9240 },
+ { "ds1780", ds1780 },
+ { "lm81", lm81 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, adm9240_id);
+
static struct i2c_driver adm9240_driver = {
+ .class = I2C_CLASS_HWMON,
.driver = {
.name = "adm9240",
},
- .attach_adapter = adm9240_attach_adapter,
- .detach_client = adm9240_detach_client,
+ .probe = adm9240_probe,
+ .remove = adm9240_remove,
+ .id_table = adm9240_id,
+ .detect = adm9240_detect,
+ .address_data = &addr_data,
};
/* per client data */
struct adm9240_data {
- enum chips type;
- struct i2c_client client;
struct device *hwmon_dev;
struct mutex update_lock;
char valid;
@@ -532,28 +544,17 @@ static const struct attribute_group adm9
/*** sensor chip detect and driver install ***/
-static int adm9240_detect(struct i2c_adapter *adapter, int address, int kind)
+/* Return 0 if detection is successful, -ENODEV otherwise */
+static int adm9240_detect(struct i2c_client *new_client, int kind,
+ struct i2c_board_info *info)
{
- struct i2c_client *new_client;
- struct adm9240_data *data;
- int err = 0;
+ struct i2c_adapter *adapter = new_client->adapter;
const char *name = "";
+ int address = new_client->addr;
u8 man_id, die_rev;
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
- goto exit;
-
- if (!(data = kzalloc(sizeof(*data), GFP_KERNEL))) {
- err = -ENOMEM;
- goto exit;
- }
-
- new_client = &data->client;
- i2c_set_clientdata(new_client, data);
- new_client->addr = address;
- new_client->adapter = adapter;
- new_client->driver = &adm9240_driver;
- new_client->flags = 0;
+ return -ENODEV;
if (kind == 0) {
kind = adm9240;
@@ -566,7 +567,7 @@ static int adm9240_detect(struct i2c_ada
!= address) {
dev_err(&adapter->dev, "detect fail: address match, "
"0x%02x\n", address);
- goto exit_free;
+ return -ENODEV;
}
/* check known chip manufacturer */
@@ -581,7 +582,7 @@ static int adm9240_detect(struct i2c_ada
} else {
dev_err(&adapter->dev, "detect fail: unknown manuf, "
"0x%02x\n", man_id);
- goto exit_free;
+ return -ENODEV;
}
/* successful detect, print chip info */
@@ -600,20 +601,31 @@ static int adm9240_detect(struct i2c_ada
} else if (kind == lm81) {
name = "lm81";
}
+ strlcpy(info->type, name, I2C_NAME_SIZE);
- /* fill in the remaining client fields and attach */
- strlcpy(new_client->name, name, I2C_NAME_SIZE);
- data->type = kind;
- mutex_init(&data->update_lock);
+ return 0;
+}
- if ((err = i2c_attach_client(new_client)))
- goto exit_free;
+static int adm9240_probe(struct i2c_client *new_client,
+ const struct i2c_device_id *id)
+{
+ struct adm9240_data *data;
+ int err;
+
+ data = kzalloc(sizeof(*data), GFP_KERNEL);
+ if (!data) {
+ err = -ENOMEM;
+ goto exit;
+ }
+
+ i2c_set_clientdata(new_client, data);
+ mutex_init(&data->update_lock);
adm9240_init_client(new_client);
/* populate sysfs filesystem */
if ((err = sysfs_create_group(&new_client->dev.kobj, &adm9240_group)))
- goto exit_detach;
+ goto exit_free;
data->hwmon_dev = hwmon_device_register(&new_client->dev);
if (IS_ERR(data->hwmon_dev)) {
@@ -625,32 +637,19 @@ static int adm9240_detect(struct i2c_ada
exit_remove:
sysfs_remove_group(&new_client->dev.kobj, &adm9240_group);
-exit_detach:
- i2c_detach_client(new_client);
exit_free:
kfree(data);
exit:
return err;
}
-static int adm9240_attach_adapter(struct i2c_adapter *adapter)
-{
- if (!(adapter->class & I2C_CLASS_HWMON))
- return 0;
- return i2c_probe(adapter, &addr_data, adm9240_detect);
-}
-
-static int adm9240_detach_client(struct i2c_client *client)
+static int adm9240_remove(struct i2c_client *client)
{
struct adm9240_data *data = i2c_get_clientdata(client);
- int err;
hwmon_device_unregister(data->hwmon_dev);
sysfs_remove_group(&client->dev.kobj, &adm9240_group);
- if ((err = i2c_detach_client(client)))
- return err;
-
kfree(data);
return 0;
}
--
Jean Delvare
