hwmon: (adm1031) Convert to a new-style i2c driver
The new-style adm1031 driver implements the optional detect() callback
to cover the use cases of the legacy driver.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Alexandre d'Alton <alex@alexdalton.org>
diff --git a/drivers/hwmon/adm1031.c b/drivers/hwmon/adm1031.c
index 2bffcab..7894418 100644
--- a/drivers/hwmon/adm1031.c
+++ b/drivers/hwmon/adm1031.c
@@ -70,7 +70,6 @@
/* Each client has this additional data */
struct adm1031_data {
- struct i2c_client client;
struct device *hwmon_dev;
struct mutex update_lock;
int chip_type;
@@ -99,19 +98,32 @@
s8 temp_crit[3];
};
-static int adm1031_attach_adapter(struct i2c_adapter *adapter);
-static int adm1031_detect(struct i2c_adapter *adapter, int address, int kind);
+static int adm1031_probe(struct i2c_client *client,
+ const struct i2c_device_id *id);
+static int adm1031_detect(struct i2c_client *client, int kind,
+ struct i2c_board_info *info);
static void adm1031_init_client(struct i2c_client *client);
-static int adm1031_detach_client(struct i2c_client *client);
+static int adm1031_remove(struct i2c_client *client);
static struct adm1031_data *adm1031_update_device(struct device *dev);
+static const struct i2c_device_id adm1031_id[] = {
+ { "adm1030", adm1030 },
+ { "adm1031", adm1031 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, adm1031_id);
+
/* This is the driver that will be inserted */
static struct i2c_driver adm1031_driver = {
+ .class = I2C_CLASS_HWMON,
.driver = {
.name = "adm1031",
},
- .attach_adapter = adm1031_attach_adapter,
- .detach_client = adm1031_detach_client,
+ .probe = adm1031_probe,
+ .remove = adm1031_remove,
+ .id_table = adm1031_id,
+ .detect = adm1031_detect,
+ .address_data = &addr_data,
};
static inline u8 adm1031_read_value(struct i2c_client *client, u8 reg)
@@ -693,13 +705,6 @@
static SENSOR_DEVICE_ATTR(temp3_fault, S_IRUGO, show_alarm, NULL, 13);
static SENSOR_DEVICE_ATTR(temp1_crit_alarm, S_IRUGO, show_alarm, NULL, 14);
-static int adm1031_attach_adapter(struct i2c_adapter *adapter)
-{
- if (!(adapter->class & I2C_CLASS_HWMON))
- return 0;
- return i2c_probe(adapter, &addr_data, adm1031_detect);
-}
-
static struct attribute *adm1031_attributes[] = {
&sensor_dev_attr_fan1_input.dev_attr.attr,
&sensor_dev_attr_fan1_div.dev_attr.attr,
@@ -770,27 +775,15 @@
.attrs = adm1031_attributes_opt,
};
-/* This function is called by i2c_probe */
-static int adm1031_detect(struct i2c_adapter *adapter, int address, int kind)
+/* Return 0 if detection is successful, -ENODEV otherwise */
+static int adm1031_detect(struct i2c_client *client, int kind,
+ struct i2c_board_info *info)
{
- struct i2c_client *client;
- struct adm1031_data *data;
- int err = 0;
+ struct i2c_adapter *adapter = client->adapter;
const char *name = "";
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
- goto exit;
-
- if (!(data = kzalloc(sizeof(struct adm1031_data), GFP_KERNEL))) {
- err = -ENOMEM;
- goto exit;
- }
-
- client = &data->client;
- i2c_set_clientdata(client, data);
- client->addr = address;
- client->adapter = adapter;
- client->driver = &adm1031_driver;
+ return -ENODEV;
if (kind < 0) {
int id, co;
@@ -798,7 +791,7 @@
co = i2c_smbus_read_byte_data(client, 0x3e);
if (!((id == 0x31 || id == 0x30) && co == 0x41))
- goto exit_free;
+ return -ENODEV;
kind = (id == 0x30) ? adm1030 : adm1031;
}
@@ -809,28 +802,43 @@
* auto fan control helper table. */
if (kind == adm1030) {
name = "adm1030";
- data->chan_select_table = &auto_channel_select_table_adm1030;
} else if (kind == adm1031) {
name = "adm1031";
- data->chan_select_table = &auto_channel_select_table_adm1031;
}
- data->chip_type = kind;
+ strlcpy(info->type, name, I2C_NAME_SIZE);
- strlcpy(client->name, name, I2C_NAME_SIZE);
+ return 0;
+}
+
+static int adm1031_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct adm1031_data *data;
+ int err;
+
+ data = kzalloc(sizeof(struct adm1031_data), GFP_KERNEL);
+ if (!data) {
+ err = -ENOMEM;
+ goto exit;
+ }
+
+ i2c_set_clientdata(client, data);
+ data->chip_type = id->driver_data;
mutex_init(&data->update_lock);
- /* Tell the I2C layer a new client has arrived */
- if ((err = i2c_attach_client(client)))
- goto exit_free;
+ if (data->chip_type == adm1030)
+ data->chan_select_table = &auto_channel_select_table_adm1030;
+ else
+ data->chan_select_table = &auto_channel_select_table_adm1031;
/* Initialize the ADM1031 chip */
adm1031_init_client(client);
/* Register sysfs hooks */
if ((err = sysfs_create_group(&client->dev.kobj, &adm1031_group)))
- goto exit_detach;
+ goto exit_free;
- if (kind == adm1031) {
+ if (data->chip_type == adm1031) {
if ((err = sysfs_create_group(&client->dev.kobj,
&adm1031_group_opt)))
goto exit_remove;
@@ -847,25 +855,19 @@
exit_remove:
sysfs_remove_group(&client->dev.kobj, &adm1031_group);
sysfs_remove_group(&client->dev.kobj, &adm1031_group_opt);
-exit_detach:
- i2c_detach_client(client);
exit_free:
kfree(data);
exit:
return err;
}
-static int adm1031_detach_client(struct i2c_client *client)
+static int adm1031_remove(struct i2c_client *client)
{
struct adm1031_data *data = i2c_get_clientdata(client);
- int ret;
hwmon_device_unregister(data->hwmon_dev);
sysfs_remove_group(&client->dev.kobj, &adm1031_group);
sysfs_remove_group(&client->dev.kobj, &adm1031_group_opt);
- if ((ret = i2c_detach_client(client)) != 0) {
- return ret;
- }
kfree(data);
return 0;
}