Messages in this thread |  | | Date | Sat, 17 Feb 2007 12:01:40 +0100 | From | Jiri Slaby <> | Subject | Re: Linux tty driver question |
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Mockern napsal(a): > Hi, > > I'm working on Linux tty driver (based on tiny_tty). > > How can I provide in my driver Linux cat operation (e.g.cat < 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.
regards, -- http://www.fi.muni.cz/~xslaby/ 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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