linux-kernel - Re: Talking to parallel port in 2.6 kernel without using parport

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Message-ID: <ca2dc2820804251118j625abb76j100d165aee18a7c8@mail.gmail.com>
Date:	Fri, 25 Apr 2008 20:18:13 +0200
From:	"Miguel Ojeda" <miguel.ojeda.sandonis@...il.com>
To:	"Alan Cox" <alan@...rguk.ukuu.org.uk>
Cc:	"Kathy Frazier" <kfrazier@...twyler-rd.com>,
	linux-kernel@...r.kernel.org
Subject: Re: Talking to parallel port in 2.6 kernel without using parport

>  > Can you tell me what I am missing?  Where can I get the actual source code
>  > that goes with this version to further unravel this?

About two years ago (~2.6.18) I wrote one driver that needed exclusive
access to the parallel port and, like this time, Alan Cox guided me
(thank you Alan!). If you want, you can check the code at
drivers/auxdisplay/ks0108.c. I tested it as of 2.6.25 and worked fine,
so it could be a good reference for you. In addition, the code is
pretty straightforward!

>
>  To be honest this area of the kernel hasn't changed much over recent
>  times. Let me know if you can't figure out what is going on.
>

Right, I haven't had to change the code since 2.6.18.

--
Miguel Ojeda
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