mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-29 05:44:11 +00:00
hwmon: (lm85) Convert to a new-style i2c driver
The new-style lm85 driver implements the optional detect() callback to cover the use cases of the legacy driver. Signed-off-by: Jean Delvare <khali@linux-fr.org> Acked-by: Herbert Poetzl <herbert@13thfloor.at>
This commit is contained in:
parent
8a0795d9b8
commit
67712d0192
1 changed files with 64 additions and 57 deletions
|
@ -289,7 +289,6 @@ struct lm85_autofan {
|
||||||
/* For each registered chip, we need to keep some data in memory.
|
/* For each registered chip, we need to keep some data in memory.
|
||||||
The structure is dynamically allocated. */
|
The structure is dynamically allocated. */
|
||||||
struct lm85_data {
|
struct lm85_data {
|
||||||
struct i2c_client client;
|
|
||||||
struct device *hwmon_dev;
|
struct device *hwmon_dev;
|
||||||
const int *freq_map;
|
const int *freq_map;
|
||||||
enum chips type;
|
enum chips type;
|
||||||
|
@ -318,22 +317,40 @@ struct lm85_data {
|
||||||
struct lm85_zone zone[3];
|
struct lm85_zone zone[3];
|
||||||
};
|
};
|
||||||
|
|
||||||
static int lm85_attach_adapter(struct i2c_adapter *adapter);
|
static int lm85_detect(struct i2c_client *client, int kind,
|
||||||
static int lm85_detect(struct i2c_adapter *adapter, int address,
|
struct i2c_board_info *info);
|
||||||
int kind);
|
static int lm85_probe(struct i2c_client *client,
|
||||||
static int lm85_detach_client(struct i2c_client *client);
|
const struct i2c_device_id *id);
|
||||||
|
static int lm85_remove(struct i2c_client *client);
|
||||||
|
|
||||||
static int lm85_read_value(struct i2c_client *client, u8 reg);
|
static int lm85_read_value(struct i2c_client *client, u8 reg);
|
||||||
static void lm85_write_value(struct i2c_client *client, u8 reg, int value);
|
static void lm85_write_value(struct i2c_client *client, u8 reg, int value);
|
||||||
static struct lm85_data *lm85_update_device(struct device *dev);
|
static struct lm85_data *lm85_update_device(struct device *dev);
|
||||||
|
|
||||||
|
|
||||||
|
static const struct i2c_device_id lm85_id[] = {
|
||||||
|
{ "adm1027", adm1027 },
|
||||||
|
{ "adt7463", adt7463 },
|
||||||
|
{ "lm85", any_chip },
|
||||||
|
{ "lm85b", lm85b },
|
||||||
|
{ "lm85c", lm85c },
|
||||||
|
{ "emc6d100", emc6d100 },
|
||||||
|
{ "emc6d101", emc6d100 },
|
||||||
|
{ "emc6d102", emc6d102 },
|
||||||
|
{ }
|
||||||
|
};
|
||||||
|
MODULE_DEVICE_TABLE(i2c, lm85_id);
|
||||||
|
|
||||||
static struct i2c_driver lm85_driver = {
|
static struct i2c_driver lm85_driver = {
|
||||||
|
.class = I2C_CLASS_HWMON,
|
||||||
.driver = {
|
.driver = {
|
||||||
.name = "lm85",
|
.name = "lm85",
|
||||||
},
|
},
|
||||||
.attach_adapter = lm85_attach_adapter,
|
.probe = lm85_probe,
|
||||||
.detach_client = lm85_detach_client,
|
.remove = lm85_remove,
|
||||||
|
.id_table = lm85_id,
|
||||||
|
.detect = lm85_detect,
|
||||||
|
.address_data = &addr_data,
|
||||||
};
|
};
|
||||||
|
|
||||||
|
|
||||||
|
@ -965,13 +982,6 @@ temp_auto(1);
|
||||||
temp_auto(2);
|
temp_auto(2);
|
||||||
temp_auto(3);
|
temp_auto(3);
|
||||||
|
|
||||||
static int lm85_attach_adapter(struct i2c_adapter *adapter)
|
|
||||||
{
|
|
||||||
if (!(adapter->class & I2C_CLASS_HWMON))
|
|
||||||
return 0;
|
|
||||||
return i2c_probe(adapter, &addr_data, lm85_detect);
|
|
||||||
}
|
|
||||||
|
|
||||||
static struct attribute *lm85_attributes[] = {
|
static struct attribute *lm85_attributes[] = {
|
||||||
&sensor_dev_attr_fan1_input.dev_attr.attr,
|
&sensor_dev_attr_fan1_input.dev_attr.attr,
|
||||||
&sensor_dev_attr_fan2_input.dev_attr.attr,
|
&sensor_dev_attr_fan2_input.dev_attr.attr,
|
||||||
|
@ -1111,30 +1121,19 @@ static void lm85_init_client(struct i2c_client *client)
|
||||||
dev_warn(&client->dev, "Device is not ready\n");
|
dev_warn(&client->dev, "Device is not ready\n");
|
||||||
}
|
}
|
||||||
|
|
||||||
static int lm85_detect(struct i2c_adapter *adapter, int address,
|
/* Return 0 if detection is successful, -ENODEV otherwise */
|
||||||
int kind)
|
static int lm85_detect(struct i2c_client *client, int kind,
|
||||||
|
struct i2c_board_info *info)
|
||||||
{
|
{
|
||||||
struct i2c_client *client;
|
struct i2c_adapter *adapter = client->adapter;
|
||||||
struct lm85_data *data;
|
int address = client->addr;
|
||||||
int err = 0;
|
|
||||||
const char *type_name;
|
const char *type_name;
|
||||||
|
|
||||||
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
|
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
|
||||||
/* We need to be able to do byte I/O */
|
/* We need to be able to do byte I/O */
|
||||||
goto ERROR0;
|
return -ENODEV;
|
||||||
}
|
}
|
||||||
|
|
||||||
if (!(data = kzalloc(sizeof(struct lm85_data), GFP_KERNEL))) {
|
|
||||||
err = -ENOMEM;
|
|
||||||
goto ERROR0;
|
|
||||||
}
|
|
||||||
|
|
||||||
client = &data->client;
|
|
||||||
i2c_set_clientdata(client, data);
|
|
||||||
client->addr = address;
|
|
||||||
client->adapter = adapter;
|
|
||||||
client->driver = &lm85_driver;
|
|
||||||
|
|
||||||
/* If auto-detecting, determine the chip type */
|
/* If auto-detecting, determine the chip type */
|
||||||
if (kind < 0) {
|
if (kind < 0) {
|
||||||
int company = lm85_read_value(client, LM85_REG_COMPANY);
|
int company = lm85_read_value(client, LM85_REG_COMPANY);
|
||||||
|
@ -1148,7 +1147,7 @@ static int lm85_detect(struct i2c_adapter *adapter, int address,
|
||||||
if ((verstep & LM85_VERSTEP_VMASK) != LM85_VERSTEP_GENERIC) {
|
if ((verstep & LM85_VERSTEP_VMASK) != LM85_VERSTEP_GENERIC) {
|
||||||
dev_dbg(&adapter->dev, "Autodetection failed: "
|
dev_dbg(&adapter->dev, "Autodetection failed: "
|
||||||
"unsupported version\n");
|
"unsupported version\n");
|
||||||
goto ERROR1;
|
return -ENODEV;
|
||||||
}
|
}
|
||||||
kind = any_chip;
|
kind = any_chip;
|
||||||
|
|
||||||
|
@ -1186,50 +1185,62 @@ static int lm85_detect(struct i2c_adapter *adapter, int address,
|
||||||
} else {
|
} else {
|
||||||
dev_dbg(&adapter->dev, "Autodetection failed: "
|
dev_dbg(&adapter->dev, "Autodetection failed: "
|
||||||
"unknown vendor\n");
|
"unknown vendor\n");
|
||||||
goto ERROR1;
|
return -ENODEV;
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
/* Fill in the chip specific driver values */
|
|
||||||
switch (kind) {
|
switch (kind) {
|
||||||
case lm85b:
|
case lm85b:
|
||||||
type_name = "lm85b";
|
type_name = "lm85b";
|
||||||
data->freq_map = lm85_freq_map;
|
|
||||||
break;
|
break;
|
||||||
case lm85c:
|
case lm85c:
|
||||||
type_name = "lm85c";
|
type_name = "lm85c";
|
||||||
data->freq_map = lm85_freq_map;
|
|
||||||
break;
|
break;
|
||||||
case adm1027:
|
case adm1027:
|
||||||
type_name = "adm1027";
|
type_name = "adm1027";
|
||||||
data->freq_map = adm1027_freq_map;
|
|
||||||
break;
|
break;
|
||||||
case adt7463:
|
case adt7463:
|
||||||
type_name = "adt7463";
|
type_name = "adt7463";
|
||||||
data->freq_map = adm1027_freq_map;
|
|
||||||
break;
|
break;
|
||||||
case emc6d100:
|
case emc6d100:
|
||||||
type_name = "emc6d100";
|
type_name = "emc6d100";
|
||||||
data->freq_map = adm1027_freq_map;
|
|
||||||
break;
|
break;
|
||||||
case emc6d102:
|
case emc6d102:
|
||||||
type_name = "emc6d102";
|
type_name = "emc6d102";
|
||||||
data->freq_map = adm1027_freq_map;
|
|
||||||
break;
|
break;
|
||||||
default:
|
default:
|
||||||
type_name = "lm85";
|
type_name = "lm85";
|
||||||
data->freq_map = lm85_freq_map;
|
|
||||||
}
|
}
|
||||||
strlcpy(client->name, type_name, I2C_NAME_SIZE);
|
strlcpy(info->type, type_name, I2C_NAME_SIZE);
|
||||||
|
|
||||||
/* Fill in the remaining client fields */
|
return 0;
|
||||||
data->type = kind;
|
}
|
||||||
|
|
||||||
|
static int lm85_probe(struct i2c_client *client,
|
||||||
|
const struct i2c_device_id *id)
|
||||||
|
{
|
||||||
|
struct lm85_data *data;
|
||||||
|
int err;
|
||||||
|
|
||||||
|
data = kzalloc(sizeof(struct lm85_data), GFP_KERNEL);
|
||||||
|
if (!data)
|
||||||
|
return -ENOMEM;
|
||||||
|
|
||||||
|
i2c_set_clientdata(client, data);
|
||||||
|
data->type = id->driver_data;
|
||||||
mutex_init(&data->update_lock);
|
mutex_init(&data->update_lock);
|
||||||
|
|
||||||
/* Tell the I2C layer a new client has arrived */
|
/* Fill in the chip specific driver values */
|
||||||
err = i2c_attach_client(client);
|
switch (data->type) {
|
||||||
if (err)
|
case adm1027:
|
||||||
goto ERROR1;
|
case adt7463:
|
||||||
|
case emc6d100:
|
||||||
|
case emc6d102:
|
||||||
|
data->freq_map = adm1027_freq_map;
|
||||||
|
break;
|
||||||
|
default:
|
||||||
|
data->freq_map = lm85_freq_map;
|
||||||
|
}
|
||||||
|
|
||||||
/* Set the VRM version */
|
/* Set the VRM version */
|
||||||
data->vrm = vid_which_vrm();
|
data->vrm = vid_which_vrm();
|
||||||
|
@ -1240,18 +1251,18 @@ static int lm85_detect(struct i2c_adapter *adapter, int address,
|
||||||
/* Register sysfs hooks */
|
/* Register sysfs hooks */
|
||||||
err = sysfs_create_group(&client->dev.kobj, &lm85_group);
|
err = sysfs_create_group(&client->dev.kobj, &lm85_group);
|
||||||
if (err)
|
if (err)
|
||||||
goto ERROR2;
|
goto ERROR1;
|
||||||
|
|
||||||
/* The ADT7463 has an optional VRM 10 mode where pin 21 is used
|
/* The ADT7463 has an optional VRM 10 mode where pin 21 is used
|
||||||
as a sixth digital VID input rather than an analog input. */
|
as a sixth digital VID input rather than an analog input. */
|
||||||
data->vid = lm85_read_value(client, LM85_REG_VID);
|
data->vid = lm85_read_value(client, LM85_REG_VID);
|
||||||
if (!(kind == adt7463 && (data->vid & 0x80)))
|
if (!(data->type == adt7463 && (data->vid & 0x80)))
|
||||||
if ((err = sysfs_create_group(&client->dev.kobj,
|
if ((err = sysfs_create_group(&client->dev.kobj,
|
||||||
&lm85_group_in4)))
|
&lm85_group_in4)))
|
||||||
goto ERROR3;
|
goto ERROR3;
|
||||||
|
|
||||||
/* The EMC6D100 has 3 additional voltage inputs */
|
/* The EMC6D100 has 3 additional voltage inputs */
|
||||||
if (kind == emc6d100)
|
if (data->type == emc6d100)
|
||||||
if ((err = sysfs_create_group(&client->dev.kobj,
|
if ((err = sysfs_create_group(&client->dev.kobj,
|
||||||
&lm85_group_in567)))
|
&lm85_group_in567)))
|
||||||
goto ERROR3;
|
goto ERROR3;
|
||||||
|
@ -1268,17 +1279,14 @@ static int lm85_detect(struct i2c_adapter *adapter, int address,
|
||||||
ERROR3:
|
ERROR3:
|
||||||
sysfs_remove_group(&client->dev.kobj, &lm85_group);
|
sysfs_remove_group(&client->dev.kobj, &lm85_group);
|
||||||
sysfs_remove_group(&client->dev.kobj, &lm85_group_in4);
|
sysfs_remove_group(&client->dev.kobj, &lm85_group_in4);
|
||||||
if (kind == emc6d100)
|
if (data->type == emc6d100)
|
||||||
sysfs_remove_group(&client->dev.kobj, &lm85_group_in567);
|
sysfs_remove_group(&client->dev.kobj, &lm85_group_in567);
|
||||||
ERROR2:
|
|
||||||
i2c_detach_client(client);
|
|
||||||
ERROR1:
|
ERROR1:
|
||||||
kfree(data);
|
kfree(data);
|
||||||
ERROR0:
|
|
||||||
return err;
|
return err;
|
||||||
}
|
}
|
||||||
|
|
||||||
static int lm85_detach_client(struct i2c_client *client)
|
static int lm85_remove(struct i2c_client *client)
|
||||||
{
|
{
|
||||||
struct lm85_data *data = i2c_get_clientdata(client);
|
struct lm85_data *data = i2c_get_clientdata(client);
|
||||||
hwmon_device_unregister(data->hwmon_dev);
|
hwmon_device_unregister(data->hwmon_dev);
|
||||||
|
@ -1286,7 +1294,6 @@ static int lm85_detach_client(struct i2c_client *client)
|
||||||
sysfs_remove_group(&client->dev.kobj, &lm85_group_in4);
|
sysfs_remove_group(&client->dev.kobj, &lm85_group_in4);
|
||||||
if (data->type == emc6d100)
|
if (data->type == emc6d100)
|
||||||
sysfs_remove_group(&client->dev.kobj, &lm85_group_in567);
|
sysfs_remove_group(&client->dev.kobj, &lm85_group_in567);
|
||||||
i2c_detach_client(client);
|
|
||||||
kfree(data);
|
kfree(data);
|
||||||
return 0;
|
return 0;
|
||||||
}
|
}
|
||||||
|
|
Loading…
Reference in a new issue