ODROID C2 + I2C: request for code review and help

[Vincent DEFERT <vincent.defert%posteo.net@localhost>]

Hi,

I'm working on an I2C driver for the amlogic meson architecture, testing 
it on ODROID C2.
The configuration is correct, the driver attaches to the FDT and 
responds to the iic_exec ioctl.
However, the interrupt handler is never calledand I have no clue why.

It is the first time I write a NetBSD driver, so I'd appreciate a code 
review.
I also welcome any advice as to what I can try to make it work. :)

The code can be downloaded at https://www.defert.com/meson-i2c.tgz
It is intended to be untarred in /usr/src/sys, or wherever else you have 
your kernel sources.
It also has a TEST-PGM directory with a test program that writes and 
reads a 24C256 I2C EEPROM.

My kernel configuration is called ODROID-C2.
I had to modify meson-gxbb-odroidc2.dts, so it also needs to be recompiled.
I have included comments in the files I modified so you can easily 
locate my changes (search BEGIN_MESONI2C_MOD).

Thank you in advance!

Vincent