Re: Linux tty driver question

From: Jiri Slaby
Date: Sat Feb 17 2007 - 06:01:51 EST

Mockern napsal(a):

I'm working on Linux tty driver (based on tiny_tty).

How can I provide in my driver Linux cat operation ( < ttyS3)?

call tty_insert_flip_*() from somewhere to put some data into tty recieve buffer, which is pushed into ldisc by tty_flip_buffer_push() and then sent by tty_read function (where ldisc read is called) to userspace for reading process.

What should I implement exactly?

open, settermios, write_room (note that this is minimal and will probably oops when poll or write is invoked) + some isr or timer to fill the buffer mentioned above.

-- Jiri Slaby
faculty of informatics, masaryk university, brno, cz
e-mail: jirislaby gmail com, gpg pubkey fingerprint:
B674 9967 0407 CE62 ACC8 22A0 32CC 55C3 39D4 7A7E

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