The patch intends to allow the configuration of resolution
polarity etc.
Signed-off-by: Shubhrajyoti D <shubhrajyoti@xxxxxx>
---
drivers/hwmon/lm75.c | 35 +++++++++++++++++++++++++++++++++++
1 files changed, 35 insertions(+), 0 deletions(-)
diff --git a/drivers/hwmon/lm75.c b/drivers/hwmon/lm75.c
index 2a5b12a..abf3135 100644
--- a/drivers/hwmon/lm75.c
+++ b/drivers/hwmon/lm75.c
@@ -111,7 +111,41 @@ static ssize_t set_temp(struct device *dev, struct device_attribute *da,
mutex_unlock(&data->update_lock);
return count;
}
+static ssize_t set_configuration(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ s32 status;
+ struct i2c_client *client = to_i2c_client(dev);
+ struct lm75_data *data = i2c_get_clientdata(client);
+ unsigned long temp;
+ int error;
+ error = strict_strtol(buf, 10, &temp);
+ if (error)
+ return error;
+
+ data->orig_conf = (u8)temp;
+ /* I2C write to the configuration register */
+ status = lm75_write_value(client, LM75_REG_CONF,
+ data->orig_conf);
+ return count;
+}
+
+static ssize_t show_configuration(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ int status = lm75_read_value(client, LM75_REG_CONF);
+ if (status < 0) {
+ dev_dbg(&client->dev, "Can't read config? %d\n", status);
+ return status;
+ }
+
+ return sprintf(buf, "%u\n", status);
+}
+static SENSOR_DEVICE_ATTR(configuration, S_IWUSR | S_IRUGO,
+ show_configuration, set_configuration, 0);
static SENSOR_DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO,
show_temp, set_temp, 1);
static SENSOR_DEVICE_ATTR(temp1_max_hyst, S_IWUSR | S_IRUGO,
@@ -122,6 +156,7 @@ static struct attribute *lm75_attributes[] = {
&sensor_dev_attr_temp1_input.dev_attr.attr,
&sensor_dev_attr_temp1_max.dev_attr.attr,
&sensor_dev_attr_temp1_max_hyst.dev_attr.attr,
+ &sensor_dev_attr_configuration.dev_attr.attr,
NULL
};
--
1.7.0.4
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