diff options
| -rw-r--r-- | drivers/hwmon/ds1621.c | 123 |
1 files changed, 57 insertions, 66 deletions
diff --git a/drivers/hwmon/ds1621.c b/drivers/hwmon/ds1621.c index 7415381..e688798 100644 --- a/drivers/hwmon/ds1621.c +++ b/drivers/hwmon/ds1621.c @@ -81,34 +81,6 @@ struct ds1621_data { u8 conf; /* Register encoding, combined */ }; -static int ds1621_probe(struct i2c_client *client, - const struct i2c_device_id *id); -static int ds1621_detect(struct i2c_client *client, int kind, - struct i2c_board_info *info); -static void ds1621_init_client(struct i2c_client *client); -static int ds1621_remove(struct i2c_client *client); -static struct ds1621_data *ds1621_update_client(struct device *dev); - -static const struct i2c_device_id ds1621_id[] = { - { "ds1621", ds1621 }, - { "ds1625", ds1621 }, - { } -}; -MODULE_DEVICE_TABLE(i2c, ds1621_id); - -/* This is the driver that will be inserted */ -static struct i2c_driver ds1621_driver = { - .class = I2C_CLASS_HWMON, - .driver = { - .name = "ds1621", - }, - .probe = ds1621_probe, - .remove = ds1621_remove, - .id_table = ds1621_id, - .detect = ds1621_detect, - .address_data = &addr_data, -}; - /* All registers are word-sized, except for the configuration register. DS1621 uses a high-byte first convention, which is exactly opposite to the SMBus standard. */ @@ -146,6 +118,45 @@ static void ds1621_init_client(struct i2c_client *client) i2c_smbus_write_byte(client, DS1621_COM_START); } +static struct ds1621_data *ds1621_update_client(struct device *dev) +{ + struct i2c_client *client = to_i2c_client(dev); + struct ds1621_data *data = i2c_get_clientdata(client); + u8 new_conf; + + mutex_lock(&data->update_lock); + + if (time_after(jiffies, data->last_updated + HZ + HZ / 2) + || !data->valid) { + int i; + + dev_dbg(&client->dev, "Starting ds1621 update\n"); + + data->conf = ds1621_read_value(client, DS1621_REG_CONF); + + for (i = 0; i < ARRAY_SIZE(data->temp); i++) + data->temp[i] = ds1621_read_value(client, + DS1621_REG_TEMP[i]); + + /* reset alarms if necessary */ + new_conf = data->conf; + if (data->temp[0] > data->temp[1]) /* input > min */ + new_conf &= ~DS1621_ALARM_TEMP_LOW; + if (data->temp[0] < data->temp[2]) /* input < max */ + new_conf &= ~DS1621_ALARM_TEMP_HIGH; + if (data->conf != new_conf) + ds1621_write_value(client, DS1621_REG_CONF, + new_conf); + + data->last_updated = jiffies; + data->valid = 1; + } + + mutex_unlock(&data->update_lock); + + return data; +} + static ssize_t show_temp(struct device *dev, struct device_attribute *da, char *buf) { @@ -294,45 +305,25 @@ static int ds1621_remove(struct i2c_client *client) return 0; } +static const struct i2c_device_id ds1621_id[] = { + { "ds1621", ds1621 }, + { "ds1625", ds1621 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, ds1621_id); -static struct ds1621_data *ds1621_update_client(struct device *dev) -{ - struct i2c_client *client = to_i2c_client(dev); - struct ds1621_data *data = i2c_get_clientdata(client); - u8 new_conf; - - mutex_lock(&data->update_lock); - - if (time_after(jiffies, data->last_updated + HZ + HZ / 2) - || !data->valid) { - int i; - - dev_dbg(&client->dev, "Starting ds1621 update\n"); - - data->conf = ds1621_read_value(client, DS1621_REG_CONF); - - for (i = 0; i < ARRAY_SIZE(data->temp); i++) - data->temp[i] = ds1621_read_value(client, - DS1621_REG_TEMP[i]); - - /* reset alarms if necessary */ - new_conf = data->conf; - if (data->temp[0] > data->temp[1]) /* input > min */ - new_conf &= ~DS1621_ALARM_TEMP_LOW; - if (data->temp[0] < data->temp[2]) /* input < max */ - new_conf &= ~DS1621_ALARM_TEMP_HIGH; - if (data->conf != new_conf) - ds1621_write_value(client, DS1621_REG_CONF, - new_conf); - - data->last_updated = jiffies; - data->valid = 1; - } - - mutex_unlock(&data->update_lock); - - return data; -} +/* This is the driver that will be inserted */ +static struct i2c_driver ds1621_driver = { + .class = I2C_CLASS_HWMON, + .driver = { + .name = "ds1621", + }, + .probe = ds1621_probe, + .remove = ds1621_remove, + .id_table = ds1621_id, + .detect = ds1621_detect, + .address_data = &addr_data, +}; static int __init ds1621_init(void) { |
