If your device has official CyanogenMod support,check out CyanogenMod GitHub for Device and Kernel repo - https://github.com/CyanogenMod
If your device has unoffical CyanogenMod support,go to your respective device's CyanogenMod thread and look out for the device specific sources at the bottom of the first post.
Get your device's vendor from here - https://github.com/TheMuppets
Drop your queries down below if you have any.