+static struct smsc47m1_data *smsc47m1_update_device(struct device *dev,
+ int init)
+{
+ struct smsc47m1_data *data = dev_get_drvdata(dev);
+
+ mutex_lock(&data->update_lock);
+
+ if (time_after(jiffies, data->last_updated + HZ + HZ / 2) || init) {
+ int i, fan_nr;
+ fan_nr = data->type == smsc47m2 ? 3 : 2;
+
+ for (i = 0; i < fan_nr; i++) {
+ data->fan[i] = smsc47m1_read_value(data,
+ SMSC47M1_REG_FAN[i]);
+ data->fan_preload[i] = smsc47m1_read_value(data,
+ SMSC47M1_REG_FAN_PRELOAD[i]);
+ data->pwm[i] = smsc47m1_read_value(data,
+ SMSC47M1_REG_PWM[i]);
+ }
+
+ i = smsc47m1_read_value(data, SMSC47M1_REG_FANDIV);
+ data->fan_div[0] = (i >> 4) & 0x03;
+ data->fan_div[1] = i >> 6;
+
+ data->alarms = smsc47m1_read_value(data,
+ SMSC47M1_REG_ALARM) >> 6;
+ /* Clear alarms if needed */
+ if (data->alarms)
+ smsc47m1_write_value(data, SMSC47M1_REG_ALARM, 0xC0);
+
+ if (fan_nr >= 3) {
+ data->fan_div[2] = (smsc47m1_read_value(data,
+ SMSC47M2_REG_FANDIV3) >> 4) & 0x03;
+ data->alarms |= (smsc47m1_read_value(data,
+ SMSC47M2_REG_ALARM6) & 0x40) >> 4;
+ /* Clear alarm if needed */
+ if (data->alarms & 0x04)
+ smsc47m1_write_value(data,
+ SMSC47M2_REG_ALARM6,
+ 0x40);
+ }
+
+ data->last_updated = jiffies;
+ }
+
+ mutex_unlock(&data->update_lock);
+ return data;
+}