[LCP] SPI driver development questions

[haqin]

Sorry, there may be some problem with my network that half of the letter I sent several hours ago is cut off.


I have to develop a SPI device driver to make a at91sam9261 custom board "talk" to an at89s53 in order to receive data from it when needed.

I'm using 2.6.14 kernel with support for the spi subsystem enabled. 

Could anyone tell me how to write a dirve base on the sp isubsystem support of the Linux kernel.

Let me repeat. I wonder how to write a driver base on the spi subsystem, to communciate with a spi slave. 
Could any one give me an esay example that even without irq ?



Thank you all.

Shi ZeQin
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