Default [help] mtk6589 camera not working on builded kernel

hi all , so like its said in the title i ve compiled a kernel for my device (thanks at kashifmin for his help with build )
most of think working exepted usb host , sdcard mount , and camera (sourcery if for my device too , nothing ported)
does anyone got any idea about what is the problem pls
its wiko cink peax 2 mtk 6589 device and the main camera name is ov8825-truly-MM a 8mpx
camera launching but not showing the good color its dark , and in full daylight its showing in green colors
here is my logcat

thanks for the help