gc2235_read_reg
ret = gc2235_read_reg(client, GC2235_8BIT,
ret = gc2235_read_reg(client, GC2235_8BIT,
gc2235_read_reg(client, GC2235_8BIT, GC2235_SENSOR_ID_H, &high);
gc2235_read_reg(client, GC2235_8BIT, GC2235_SENSOR_ID_L, &low);