So after some more looking around in the code, I think the workflow is
quite a bit different than what I thought in the previous mail. I think
I am supposed to allocate hdlc device using `alloc_hdlcdev` in the
`serdev->probe` and then implementing `hdlc->xmit` to send data over UART.
But well, I am not sure how to create an HDLC frame? Is there a helper
that creates HDLC frame skbuff for me? Or maybe the hdlc implementation
is simply not designed to be used for Asynchronous framing [1]. It would
be great if someone could explain how to use this HDLC module or point
to some resource I might have missed.
Ayush Singh
[1]:
https://en.wikipedia.org/wiki/High-Level_Data_Link_Control#Asynchronous_framing
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