REG_USER_BRIGHTNESS   45 drivers/media/i2c/s5k4ecgx.c #define REG_USER_BRIGHTNESS		0x7000022c
REG_USER_BRIGHTNESS  113 drivers/media/i2c/s5k5baf.c #define REG_USER_BRIGHTNESS		0x01e4
REG_USER_BRIGHTNESS   82 drivers/media/i2c/s5k6aa.c #define REG_USER_BRIGHTNESS		0x01e4