FP_CRTC_V_TOTAL_DISP
save->fp_crtc_v_total_disp = INREG(FP_CRTC_V_TOTAL_DISP);
OUTREG(FP_CRTC_V_TOTAL_DISP, mode->fp_crtc_v_total_disp);
OUTREG(FP_CRTC_V_TOTAL_DISP, 0x03ff002a);