rtl2830_update_bits
ret = rtl2830_update_bits(client, 0x101, 0x04, 0x04);
ret = rtl2830_update_bits(client, 0x101, 0x04, 0x00);
ret = rtl2830_update_bits(client, 0x008, 0x06, i << 1);
ret = rtl2830_update_bits(client, 0x061, 0x80, u8tmp);
ret = rtl2830_update_bits(client, tab[i].reg, tab[i].mask,