Requesting your help with embedded board driver

am really sorry for my first post i was not briefly write the questions so am asking your excuse, and please help me how to solve this am new for Linux Device driver, here is my question

An embedded system is compossed of an IMX53 board attached to an FPGA board. The two communicates through the IMX53 GPIOs, according to the following protocol:
- GPIO90-GPIO97(8bits) are used as bidirectional data bus. When IMX53 sends data to the FPGA board, the GPIOs are used as outputs;when the IMX53 received data from the FPGA board, the GPIOs are used as inputs

- GPIO98(1bit) is used as DATAWRITE: when the iMX53 sends data to the FPGA board this GPIO must be set to one, otherwise it should be set to zero
- GPIO99(1bits) is used as DATAREAD: when the iMX53 reads data from the FPGA board this GPIO must be set to one, otherwise it should be set to zero

The IMX53 communicates with the FPGA board using the polling technique.

you have to provide:

1. The Linux driver initialization function
2. The implementation of the read and write functions for the Linux driver

Hi:

Welcome to Linux Questions!

These articles might help you:

http://www.freesoftwaremagazine.com/.../drivers_linux
http://stackoverflow.com/questions/4...-device-driver
http://www.xml.com/ldd/chapter/book/ch03.html

This PDF explains a lot.
In regard to the implementation of read and write functions of the Linux driver; the request method handles both read and write operations and can be very complex
http://www.sics.se/~amir/files/downl...iver/block.pdf

Reading this PDF should be a great help in this process you are taking on.
Hope this helps

The IMX53 communicates with the FPGA board using the polling technique.

Can you elaborate a little on 'polling technique'; it's functionality in which the process of how it works?

i think 'polling technique' means without interrupt

Originally Posted by getanegash i think 'polling technique' means without interrupt

W/o interrupt; got it. Understand now-
Did any of those links help?