HORZ_STRETCHING
crtc->horz_stretching = aty_ld_lcd(HORZ_STRETCHING, par);
crtc->horz_stretching = aty_ld_lcd(HORZ_STRETCHING, par);
aty_st_lcd(HORZ_STRETCHING, crtc->horz_stretching &
aty_st_lcd(HORZ_STRETCHING, crtc->horz_stretching, par);