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| author | Jean Delvare <khali@linux-fr.org> | 2011-05-25 20:43:32 +0200 |
|---|---|---|
| committer | Jean Delvare <khali@endymion.delvare> | 2011-05-25 20:43:32 +0200 |
| commit | 9c084dae5dc7ae0039e330230e70f2a5956e566a (patch) | |
| tree | 1d0bb268081342ca1dee7a6c819cd459f409939d /drivers/hwmon/max6650.c | |
| parent | hwmon: (max6650) Drop device detection (diff) | |
| download | linux-9c084dae5dc7ae0039e330230e70f2a5956e566a.tar.xz linux-9c084dae5dc7ae0039e330230e70f2a5956e566a.zip | |
hwmon: (max6650) Properly support the MAX6650
The MAX6650 has only one fan input.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: "Hans J. Koch" <hjk@hansjkoch.de>
Acked-by: Guenter Roeck <guenter.roeck@ericsson.com>
Diffstat (limited to '')
| -rw-r--r-- | drivers/hwmon/max6650.c | 34 |
1 files changed, 28 insertions, 6 deletions
diff --git a/drivers/hwmon/max6650.c b/drivers/hwmon/max6650.c index cced18626174..ece3aafa54b3 100644 --- a/drivers/hwmon/max6650.c +++ b/drivers/hwmon/max6650.c @@ -116,7 +116,8 @@ 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); @@ -138,6 +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 */ @@ -489,9 +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, @@ -509,6 +508,17 @@ 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 */ @@ -526,6 +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 @@ -537,6 +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)) @@ -544,6 +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); @@ -554,8 +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; } @@ -668,7 +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]); } |