RADEON_FP2_SRC_SEL_CRTC2
RADEON_FP2_SOURCE_SEL_CRTC2 | RADEON_FP2_SRC_SEL_CRTC2 );
values->fp2_gen_cntl &= ~RADEON_FP2_SRC_SEL_CRTC2;
crtc_idx == 0 ? 0 : RADEON_FP2_SRC_SEL_CRTC2;
~(RADEON_FP2_SOURCE_SEL_CRTC2 | RADEON_FP2_SRC_SEL_CRTC2 ));