VOLTAGE_CONTROL_ID_DAC 5053 drivers/gpu/drm/amd/include/atombios.h #define VOLTAGE_CONTROL_ID_DAC                0x02                           //I2C control, used for R5xx/R6xx MVDDC,MVDDQ or VDDCI
VOLTAGE_CONTROL_ID_DAC 4514 drivers/gpu/drm/radeon/atombios.h #define	VOLTAGE_CONTROL_ID_DAC								0x02									//I2C control, used for R5xx/R6xx MVDDC,MVDDQ or VDDCI