VCE_RB_WPTR2     1960 drivers/gpu/drm/amd/amdgpu/sid.h #define VCE_RB_WPTR2					0x2017c
VCE_RB_WPTR2     2116 drivers/gpu/drm/radeon/cikd.h #define VCE_RB_WPTR2			0x2017c
VCE_RB_WPTR2     1897 drivers/gpu/drm/radeon/sid.h #define VCE_RB_WPTR2					0x2017c