viafb_fill_crtc_timing
viafb_fill_crtc_timing(&dvi_var, cxres, cyres, iga);
viafb_fill_crtc_timing(&var2, cxres, cyres, IGA2);
viafb_fill_crtc_timing(&viafbinfo->var, 0, 0,
void viafb_fill_crtc_timing(const struct fb_var_screeninfo *var,