ATOM_S6_VRI_BRIGHTNESS_CHANGE 6989 drivers/gpu/drm/amd/include/atombios.h #define ATOM_S6_VRI_BRIGHTNESS_CHANGE       0x40000000L
ATOM_S6_VRI_BRIGHTNESS_CHANGE 5843 drivers/gpu/drm/radeon/atombios.h #define ATOM_S6_VRI_BRIGHTNESS_CHANGE       0x40000000L