CSC_RR
regval[0] = CVAL(csc->m[CSC_RR], csc->m[CSC_RG]);
cpr->m[CSC_RR] = dispc_S31_32_to_s2_8(ctm->matrix[0]);
regval[2] = CVAL(csc->m[CSC_RB], csc->m[CSC_RG], csc->m[CSC_RR]);
cpr->m[CSC_RR] = dispc_S31_32_to_s3_8(ctm->matrix[0]);