Problem registering the Platform ADC driver

Dear Friends, I am having issue with registering the platform device driver for ADC. http://pastebin.com/Ym1NTkfL - Link contains the snip code of kernel platform device and driver registration code . I have build the driver as module. When I load the driver as module, the probe function is not called from the driver. Can any one suggest what is missing in the code? I tried to find and study over internet about how to create platform device driver but in vain. Output: # insmod adc_at91.ko <8>Under at91_adc_init # rmmod adc_at91.ko <8>Under at91_adc_exit Thank you, Ankur.