config MTK_CAM_CAL tristate "MTK camera cal driver" help This module is used for reading calibration data of camera which stored in EEPROM component. CONFIG_MTK_CAM_CAL define if the camera cal driver should be built in or not. If you want to use EEPROM which contains calibration data for sensor. You have enable CONFIG_MTK_CAM_CAL on ProjectConfig. The kernel space for EEPROM will be build. It may be like as "/dev/camera_eeprom0". User space code will control the driver by open and read this one.