LM87_REG_CONFIG
if (lm87_read_value(client, LM87_REG_CONFIG) & 0x80)
lm87_write_value(client, LM87_REG_CONFIG, data->config);
data->config = lm87_read_value(client, LM87_REG_CONFIG) & 0x6F;
lm87_write_value(client, LM87_REG_CONFIG,