Yocto Layer for ADIS1675


In short: I'm building my OS with yocto and I'd like to add a driver for IMU ADIS1607 (anything but the ease of use is a plus) as part of this build. 

In details:

I'm building a prototype on a raspberryPi4. My application uses an ADIS IMU (ADIS16507). Since the board for the final product is not fixed I'm building my OS with Yocto.

I'm currently trying to add a driver for ADIS16507. Ideally I'd like to add the following... ADIS16475, but I could do with something else provided it works nicely.

First off I have checked that I'm able to build the whole ADIS linux kernel for RaspberryPi as specified in the doc. With that kernel the driver works nicely.

However the ADIS linux kernel is too heavy for what I intend to do. Hence I'm trying to build a lighter OS with yocto (also, as aforementioned, I'll likely need to port my work on different platforms).

I have a few ideas on how to do it, however none of them worked easily and I'm not sure which one to pursue.

- I assumed the simplest way would be to compile the ADIS16475 on its own and add it to the Yocto build. However I'm struggling a little with Yocto and haven't been able to compile sucessfully

- Alternatively I did find the libiio layer for yocto but it seems to require quiet a lot of code to on top of it to be able to read the IMU values.

- I am aware of the python bindings of libiio layer and of Pyadi-iio and it seems easy to use (although I did not try adding it with yocto) but computational speed is an issue for me and I'd rather use C/C++ instead of python.

- Finally I also found the meta-adi layer. I think that in my case it is not relevant but the documentation I found is rather sparse and I'm not certain what this layer is supposed to do.

Any pointer on which method I should use (maybe I've missed an obvious easy one) is welcome.

Best Regards

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