+static const u8 regs_read[t_num_regs] = {
+ [t_input1] = MAX1619_REG_R_LOCAL_TEMP,
+ [t_input2] = MAX1619_REG_R_REMOTE_TEMP,
+ [t_low2] = MAX1619_REG_R_REMOTE_LOW,
+ [t_high2] = MAX1619_REG_R_REMOTE_HIGH,
+ [t_crit2] = MAX1619_REG_R_REMOTE_CRIT,
+ [t_hyst2] = MAX1619_REG_R_TCRIT_HYST,
+};
+
+static const u8 regs_write[t_num_regs] = {
+ [t_low2] = MAX1619_REG_W_REMOTE_LOW,
+ [t_high2] = MAX1619_REG_W_REMOTE_HIGH,
+ [t_crit2] = MAX1619_REG_W_REMOTE_CRIT,
+ [t_hyst2] = MAX1619_REG_W_TCRIT_HYST,
+};
+
+static struct max1619_data *max1619_update_device(struct device *dev)
+{
+ struct max1619_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
+ int config, i;
+
+ mutex_lock(&data->update_lock);
+
+ if (time_after(jiffies, data->last_updated + HZ * 2) || !data->valid) {
+ dev_dbg(&client->dev, "Updating max1619 data.\n");
+ for (i = 0; i < t_num_regs; i++)
+ data->temp[i] = i2c_smbus_read_byte_data(client,
+ regs_read[i]);
+ data->alarms = i2c_smbus_read_byte_data(client,
+ MAX1619_REG_R_STATUS);
+ /* If OVERT polarity is low, reverse alarm bit */
+ config = i2c_smbus_read_byte_data(client, MAX1619_REG_R_CONFIG);
+ if (!(config & 0x20))
+ data->alarms ^= 0x02;
+
+ data->last_updated = jiffies;
+ data->valid = 1;
+ }
+
+ mutex_unlock(&data->update_lock);
+
+ return data;
+}
+