[Soekris] Linux access to the 4526's GPIO
phk at phk.freebsd.dk
Tue Oct 11 14:24:24 UTC 2005
In message <D679D6ED-583D-4559-A13E-5F63413CCDB1 at kivasystems.com>, Joshua Chait
>On Oct 11, 2005, at 3:01 AM, Paul Komarek wrote:
>>> The NET45xx are not quite that simple to handle from userspace
>>> the GPIO ports are located in a memory segment rather than in I/O
>>> In FreeBSD we have a device driver which makes it possible to mmap
>>> bit of memory in userland and _then_ it is quite easy.
>> I don't remember patching my kernel to get gpio support, but it
>> appears you need to. This page has 2.6 drivers, and a link to 2.4
>These are drivers for the 4801. That doesn't have the same GPIO as
>the 4501, does it? The GPIO on the 4501 is built into the Elan chip I
Yes, 48xx and 45xx are different.
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