xc2028_get_reg
if (xc2028_get_reg(priv, 0x0004, &version) < 0 ||
xc2028_get_reg(priv, 0x0008, &hwmodel) < 0) {
rc = xc2028_get_reg(priv, XREG_LOCK, &frq_lock);
rc = xc2028_get_reg(priv, XREG_SNR, &signal);
rc = xc2028_get_reg(priv, XREG_LOCK, &frq_lock);
rc = xc2028_get_reg(priv, XREG_FREQ_ERROR, &afc_reg);