+static struct adm1031_data *adm1031_update_device(struct device *dev)
+{
+ struct adm1031_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
+ unsigned long next_update;
+ int chan;
+
+ mutex_lock(&data->update_lock);
+
+ next_update = data->last_updated
+ + msecs_to_jiffies(data->update_interval);
+ if (time_after(jiffies, next_update) || !data->valid) {
+
+ dev_dbg(&client->dev, "Starting adm1031 update\n");
+ for (chan = 0;
+ chan < ((data->chip_type == adm1031) ? 3 : 2); chan++) {
+ u8 oldh, newh;
+
+ oldh =
+ adm1031_read_value(client, ADM1031_REG_TEMP(chan));
+ data->ext_temp[chan] =
+ adm1031_read_value(client, ADM1031_REG_EXT_TEMP);
+ newh =
+ adm1031_read_value(client, ADM1031_REG_TEMP(chan));
+ if (newh != oldh) {
+ data->ext_temp[chan] =
+ adm1031_read_value(client,
+ ADM1031_REG_EXT_TEMP);
+#ifdef DEBUG
+ oldh =
+ adm1031_read_value(client,
+ ADM1031_REG_TEMP(chan));
+
+ /* oldh is actually newer */
+ if (newh != oldh)
+ dev_warn(&client->dev,
+ "Remote temperature may be wrong.\n");
+#endif
+ }
+ data->temp[chan] = newh;
+
+ data->temp_offset[chan] =
+ adm1031_read_value(client,
+ ADM1031_REG_TEMP_OFFSET(chan));
+ data->temp_min[chan] =
+ adm1031_read_value(client,
+ ADM1031_REG_TEMP_MIN(chan));
+ data->temp_max[chan] =
+ adm1031_read_value(client,
+ ADM1031_REG_TEMP_MAX(chan));
+ data->temp_crit[chan] =
+ adm1031_read_value(client,
+ ADM1031_REG_TEMP_CRIT(chan));
+ data->auto_temp[chan] =
+ adm1031_read_value(client,
+ ADM1031_REG_AUTO_TEMP(chan));
+
+ }
+
+ data->conf1 = adm1031_read_value(client, ADM1031_REG_CONF1);
+ data->conf2 = adm1031_read_value(client, ADM1031_REG_CONF2);
+
+ data->alarm = adm1031_read_value(client, ADM1031_REG_STATUS(0))
+ | (adm1031_read_value(client, ADM1031_REG_STATUS(1)) << 8);
+ if (data->chip_type == adm1030)
+ data->alarm &= 0xc0ff;
+
+ for (chan = 0; chan < (data->chip_type == adm1030 ? 1 : 2);
+ chan++) {
+ data->fan_div[chan] =
+ adm1031_read_value(client,
+ ADM1031_REG_FAN_DIV(chan));
+ data->fan_min[chan] =
+ adm1031_read_value(client,
+ ADM1031_REG_FAN_MIN(chan));
+ data->fan[chan] =
+ adm1031_read_value(client,
+ ADM1031_REG_FAN_SPEED(chan));
+ data->pwm[chan] =
+ (adm1031_read_value(client,
+ ADM1031_REG_PWM) >> (4 * chan)) & 0x0f;
+ }
+ data->last_updated = jiffies;
+ data->valid = 1;
+ }
+
+ mutex_unlock(&data->update_lock);
+
+ return data;
+}