From: Matt Porter <porter@cox.net>
To: Aman <aman@mistralsoftware.com>
Cc: linuxppc embedded <linuxppc-embedded@lists.linuxppc.org>
Subject: Re: Accessing I2C from User Space
Date: Sun, 5 Jan 2003 21:07:30 -0700 [thread overview]
Message-ID: <20030105210730.B22675@home.com> (raw)
In-Reply-To: <001901c2ad79$bd3f8560$370da8c0@aman>; from aman@mistralsoftware.com on Fri, Dec 27, 2002 at 12:59:49PM +0530
On Fri, Dec 27, 2002 at 12:59:49PM +0530, Aman wrote:
>
> Hi,
>
> Iam working on IBM 440gp. I need to access the IIC registers from the
> user space. So I wrote a driver mmap entry point. But I noticed that the
> function remap_page_range () takes physical address as unsigned long which
> is 32 bits. How do I remap the IIC registers which lie in the 36 bit
> physical address space?
There's a reference to a patch in one of my changeset entries. It pays
to keep current with the development trees. See the changesets in your
local BK tree or browse the linuxppc-commit archives.
BTW, why the need to manipulate the registers directly?
Regards,
--
Matt Porter
porter@cox.net
This is Linux Country. On a quiet night, you can hear Windows reboot.
** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
prev parent reply other threads:[~2003-01-06 4:07 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-12-27 7:29 Accessing I2C from User Space Aman
2003-01-06 4:07 ` Matt Porter [this message]
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