Hello there.
At Why aren't the NVIDIA Linux drivers open source? | NVIDIA the following is mentioned:
However, NVIDIA does fundamentally believe in open source for the Linux community, and thus our GeForce 2D graphics drivers, nForce audio drivers, nForce network drivers, graphics Control Panel, Installer, and Linux Update utility are all open source and freely available.
I have looked around the internet for a while now but I’ve been unable to find said driver and/or source code. I’d be happy if someone could direct me to it.