diff options
Diffstat (limited to 'drivers/hwmon/max6650.c')
| -rw-r--r-- | drivers/hwmon/max6650.c | 78 |
1 files changed, 28 insertions, 50 deletions
diff --git a/drivers/hwmon/max6650.c b/drivers/hwmon/max6650.c index 9a11532ecae..ece3aafa54b 100644 --- a/drivers/hwmon/max6650.c +++ b/drivers/hwmon/max6650.c @@ -41,13 +41,6 @@ #include <linux/err.h> /* - * Addresses to scan. There are four disjoint possibilities, by pin config. - */ - -static const unsigned short normal_i2c[] = {0x1b, 0x1f, 0x48, 0x4b, - I2C_CLIENT_END}; - -/* * Insmod parameters */ @@ -114,8 +107,6 @@ module_param(clock, int, S_IRUGO); static int max6650_probe(struct i2c_client *client, const struct i2c_device_id *id); -static int max6650_detect(struct i2c_client *client, - struct i2c_board_info *info); static int max6650_init_client(struct i2c_client *client); static int max6650_remove(struct i2c_client *client); static struct max6650_data *max6650_update_device(struct device *dev); @@ -125,21 +116,19 @@ static struct max6650_data *max6650_update_device(struct device *dev); */ static const struct i2c_device_id max6650_id[] = { - { "max6650", 0 }, + { "max6650", 1 }, + { "max6651", 4 }, { } }; MODULE_DEVICE_TABLE(i2c, max6650_id); static struct i2c_driver max6650_driver = { - .class = I2C_CLASS_HWMON, .driver = { .name = "max6650", }, .probe = max6650_probe, .remove = max6650_remove, .id_table = max6650_id, - .detect = max6650_detect, - .address_list = normal_i2c, }; /* @@ -150,6 +139,7 @@ struct max6650_data { struct device *hwmon_dev; struct mutex update_lock; + int nr_fans; char valid; /* zero until following fields are valid */ unsigned long last_updated; /* in jiffies */ @@ -501,9 +491,6 @@ static mode_t max6650_attrs_visible(struct kobject *kobj, struct attribute *a, static struct attribute *max6650_attrs[] = { &sensor_dev_attr_fan1_input.dev_attr.attr, - &sensor_dev_attr_fan2_input.dev_attr.attr, - &sensor_dev_attr_fan3_input.dev_attr.attr, - &sensor_dev_attr_fan4_input.dev_attr.attr, &dev_attr_fan1_target.attr, &dev_attr_fan1_div.attr, &dev_attr_pwm1_enable.attr, @@ -521,42 +508,21 @@ static struct attribute_group max6650_attr_grp = { .is_visible = max6650_attrs_visible, }; +static struct attribute *max6651_attrs[] = { + &sensor_dev_attr_fan2_input.dev_attr.attr, + &sensor_dev_attr_fan3_input.dev_attr.attr, + &sensor_dev_attr_fan4_input.dev_attr.attr, + NULL +}; + +static const struct attribute_group max6651_attr_grp = { + .attrs = max6651_attrs, +}; + /* * Real code */ -/* Return 0 if detection is successful, -ENODEV otherwise */ -static int max6650_detect(struct i2c_client *client, - struct i2c_board_info *info) -{ - struct i2c_adapter *adapter = client->adapter; - int address = client->addr; - - dev_dbg(&adapter->dev, "max6650_detect called\n"); - - if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) { - dev_dbg(&adapter->dev, "max6650: I2C bus doesn't support " - "byte read mode, skipping.\n"); - return -ENODEV; - } - - if (((i2c_smbus_read_byte_data(client, MAX6650_REG_CONFIG) & 0xC0) - ||(i2c_smbus_read_byte_data(client, MAX6650_REG_GPIO_STAT) & 0xE0) - ||(i2c_smbus_read_byte_data(client, MAX6650_REG_ALARM_EN) & 0xE0) - ||(i2c_smbus_read_byte_data(client, MAX6650_REG_ALARM) & 0xE0) - ||(i2c_smbus_read_byte_data(client, MAX6650_REG_COUNT) & 0xFC))) { - dev_dbg(&adapter->dev, - "max6650: detection failed at 0x%02x.\n", address); - return -ENODEV; - } - - dev_info(&adapter->dev, "max6650: chip found at 0x%02x.\n", address); - - strlcpy(info->type, "max6650", I2C_NAME_SIZE); - - return 0; -} - static int max6650_probe(struct i2c_client *client, const struct i2c_device_id *id) { @@ -570,6 +536,7 @@ static int max6650_probe(struct i2c_client *client, i2c_set_clientdata(client, data); mutex_init(&data->update_lock); + data->nr_fans = id->driver_data; /* * Initialize the max6650 chip @@ -581,6 +548,12 @@ static int max6650_probe(struct i2c_client *client, err = sysfs_create_group(&client->dev.kobj, &max6650_attr_grp); if (err) goto err_free; + /* 3 additional fan inputs for the MAX6651 */ + if (data->nr_fans == 4) { + err = sysfs_create_group(&client->dev.kobj, &max6651_attr_grp); + if (err) + goto err_remove; + } data->hwmon_dev = hwmon_device_register(&client->dev); if (!IS_ERR(data->hwmon_dev)) @@ -588,6 +561,9 @@ static int max6650_probe(struct i2c_client *client, err = PTR_ERR(data->hwmon_dev); dev_err(&client->dev, "error registering hwmon device.\n"); + if (data->nr_fans == 4) + sysfs_remove_group(&client->dev.kobj, &max6651_attr_grp); +err_remove: sysfs_remove_group(&client->dev.kobj, &max6650_attr_grp); err_free: kfree(data); @@ -598,8 +574,10 @@ static int max6650_remove(struct i2c_client *client) { struct max6650_data *data = i2c_get_clientdata(client); - sysfs_remove_group(&client->dev.kobj, &max6650_attr_grp); hwmon_device_unregister(data->hwmon_dev); + if (data->nr_fans == 4) + sysfs_remove_group(&client->dev.kobj, &max6651_attr_grp); + sysfs_remove_group(&client->dev.kobj, &max6650_attr_grp); kfree(data); return 0; } @@ -712,7 +690,7 @@ static struct max6650_data *max6650_update_device(struct device *dev) MAX6650_REG_SPEED); data->config = i2c_smbus_read_byte_data(client, MAX6650_REG_CONFIG); - for (i = 0; i < 4; i++) { + for (i = 0; i < data->nr_fans; i++) { data->tach[i] = i2c_smbus_read_byte_data(client, tach_reg[i]); } |