Can I get nvidia driver source or similar software, (very old version is ok.)

I want to see nvidia driver (for linux) for study(what drm look like, etc). It’s ok if it’s an old version.
I heard nvidia doesn’t open the driver source, but I thought maybe there can be something I can study.

there are some codes under drivers/gpu/drm directory. (for Tegra)

I was able to contact them and get a windows driver for my 1060 that was from 2018 not to long ago. It might be worth an email or calling customer service.