CD1400_GFRCR
((CD1400_GFRCR << 1) << bustype), 0);
((CD1400_GFRCR << 1) << bustype)) == 0)
((CD1400_GFRCR << 1) << bustype));
if (cd_read_reg(sc, cy_chip, CD1400_GFRCR) <= 0x46)
cd->cd_chiprev = cd1400_read_reg(cd, CD1400_GFRCR);
cd1400_write_reg(cd, CD1400_GFRCR, 0x00);
while( cd1400_read_reg(cd, CD1400_GFRCR) != cd->cd_chiprev )