Using net/wan/hdlc with serdev

Hello everyone. I have a serdev driver that communicates with a coprocessor using HDLC [1]. I am currently using my own HDLC implementation, but someone pointed out to me that I might be able to use `drivers/net/wan/hdlc` instead. However, I am not quite sure how I am supposed to use it. I think I am supposed to `register_hdlc_protocol` in the serdev probe. The `hdlc_proto->netif_rx` callback is called when data is available, and `hdlc_proto->xmit` is called to send data? What is the format of `skb-data` in rx? It would be great if someone could point me to some drivers that use Linux internal HDLC implementation. Ayush Singh [1]: https://git.beagleboard.org/gsoc/greybus/beagleplay-greybus-driver/-/tree/de...