Hans de Goede (j.w.r.degoede(a)hhs.nl) said:
> What are the modules that live behind that device?
The module / driver behind it us i2c-dev, which gives userspace access to
one ore more i2c-busses. So the chain basically is:
-userspace app (i2cdump for example) -> i2c-dev -> i2c master driver
(i2c-i801
for example).
Notice that under normal circumstances userspace access to the i2c busses
is not used, its main use is as a debugging / development technique.
So, i2c-i801 is automatically loaded, but i2c-dev isn't?
If it's not needed by default, I suppose the device node + kmod is one
way to do it; you could also build it statically if you really want
to. Why wouldn't i2c-dev be part of i2c-core anyway?
Interesting this seems to be different from adding entries under
/lib/udev/devices, as as said on my system after dev the loop module gets
loaded, while I assume its not used during boot. Wouldn't it be better
(faster, less memory use) for the loop-devices to sit under
/lib/udev/devices, so that no module gets loaded?
I'm not seeing it getting loaded by default for me. Did you set up
a loop device?
Bill