We are switching from tiny6410(friendlyarm) to VF50/VF61 module. We have written kernel module to drive stepper motor in terms of steps and speed from (82Hz to 10KHz) using tiny6410 hardware timer registers.
Motor driver : a3982.c
Also below two gpio driver are used for input and output functionality.
GPIO input driver: ea503probe.c
GPIO output driver: ea503valvesn.c
We need help to port above three driver for VFXX module.