zd1301_demod_rreg
ret = zd1301_demod_rreg(dev, 0x6a24, &u8tmp);
ret = zd1301_demod_rreg(dev, 0x6804, &u8tmp);
ret = zd1301_demod_rreg(dev, 0x0600 + i, &msg[1].buf[i]);
ret = zd1301_demod_rreg(dev, 0x6804, &u8tmp);
dev->demod_pdata.reg_read = zd1301_demod_rreg;