Hello,
Excuse me if the question have been already answered or is obvious, but
i don't know actually how to reach i2c busses from a kernel module (the
kernel module is cross compiled).
The user space /dev/i2c-x are not accessibles - or i'm unable to reach
them. I suspect i have an issue because if i understand well, /dev/i2c-x
is logically only available in user space. The error returned is the
following:
"error: implicit declaration of function 'ioctl'"
and i fear it could be the same for open(), because if i comment my
ioctl calls, it does not issue an error but a warning related to 'open
undefined'.
I can successfully write user space librairies, and compile the great
i2ctools suite.
I have actually theses includes:
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/i2c-dev.h>
#include <fcntl.h>
#include <linux/fs.h>
Thank you very much if you can point me to some documentations where i
could use i2c from a kernel module.
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