Hi Pirmin,
On Tue, Sep 07, 2021 at 02:14:24PM +0200, Pirmin Duss wrote:
Hello Genodians
We have an ARM platform with a Intel AX200NGW WIFI module. This isn't supported by the current `wifi_drv`. Support for this module type was recently added to the Linux kernel.
If no one has already started upgrading `wifi_drv` I would volunteer to update the driver to the new Linux-device-driver environment.
Well that is commendable! AFAIK nobody works on updating the WiFi Linux-device-driver yet.
I would at first create the version for x86_64 which can be tested more easily. If this works I would then create the version for ARM64.
Yes that makes sense to first update the x86 version.
However, you have to be aware that there are still some obstacles in the way. Therefore, you should be prepared that it will take you rather months than just days. First the new Linux device-driver environment approach and tooling - introduced in release 21.08 - was not yet used with other architectures than ARM64. Especially, the emulation environment currently works for device-tree drivers only, not PCI devices. Moreover, the emulation environment uses the new Platform driver API as backend, which currently is available for ARM only. That means you will have to invest some time to re-work the new Linux emulation approach with the legacy platform driver API for x86.
Moreover, you need to know that the WiFi driver is a hybrid component that consists not only of the Linux device driver part. The libc-based wpa_supplicant port is co-located with the Linux device driver, and probably its implementation is kernel version dependent too. I'm no expert in this area, but you probably have to update the wpa_supplicant port concurrently.
Having said this, of course it would be absolutely great if you update the driver to a more recent version.
Best regards Stefan
Best regards, Pirmin
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