Generic sysfs GPIO

[jossie67]

Hi, I try to get something simple to work
I have 3 doorcontact , connected GPIO21, GPIO22 and GPIO23
When the door is closed GPIO is connected to ground
With Raspberry's GPIO port, I didn't have any problems.
But know I try to get this working with Generic sysfs GPIO
I'm a little bit stuck in creating a init_GPIO with raspi-gpio
Can someone help me just al little bit, I