Src-Code of Arducam V4L2 Jetvariety driver

Where do I find the source code of the Arducam V4L2 Jetvariety driver? I found this repository here https://github.com/ArduCAM/Arducam-Jetvariety-ISP-V4L2-Driver but there is no src code there. And I guess this driver here https://github.com/ArduCAM/Arducam-Pivariety-V4L2-Driver is not the one for Jetson.
I would like to extend the driver so that it supports manual white balance configuration.
Kind regards,
Michael

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