VCN_DEC_CMD_WRITE_REG 1587 drivers/gpu/drm/amd/amdgpu/vcn_v1_0.c 	amdgpu_ring_write(ring, VCN_DEC_CMD_WRITE_REG << 1);
VCN_DEC_CMD_WRITE_REG 1646 drivers/gpu/drm/amd/amdgpu/vcn_v2_0.c 	amdgpu_ring_write(ring, VCN_DEC_KMD_CMD | (VCN_DEC_CMD_WRITE_REG << 1));