pxa2x0_lcd_new_screen
error = pxa2x0_lcd_new_screen(sc, descr->depth, &scr);
error = pxa2x0_lcd_new_screen(sc, type->depth, &scr);
int pxa2x0_lcd_new_screen(struct pxa2x0_lcd_softc *, int,
error = pxa2x0_lcd_new_screen( sc, 16, &screen );
error = pxa2x0_lcd_new_screen( sc, 8, &screen );