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<DIV>


<DIV><FONT face=Verdana size=2>Sorry,&nbsp;there may be&nbsp;some problem with 


my network that half of the letter I sent several hours ago is cut 


off.</FONT></DIV>


<DIV>&nbsp;</DIV>


<DIV>&nbsp;</DIV></DIV>


<DIV><FONT face=Verdana size=2>


<DIV>I&nbsp;have&nbsp;to&nbsp;develop&nbsp;a&nbsp;SPI&nbsp;device&nbsp;driver&nbsp;to&nbsp;make&nbsp;a&nbsp;at91sam9261&nbsp;custom&nbsp;board&nbsp;"talk"&nbsp;to&nbsp;an&nbsp;at89s53&nbsp;in&nbsp;order&nbsp;to&nbsp;receive&nbsp;data&nbsp;from&nbsp;it&nbsp;when&nbsp;needed.</DIV>


<DIV>&nbsp;</DIV>


<DIV>I'm&nbsp;using&nbsp;2.6.14&nbsp;kernel&nbsp;with&nbsp;support&nbsp;for&nbsp;the&nbsp;spi&nbsp;subsystem&nbsp;enabled.&nbsp;</DIV>


<DIV>&nbsp;</DIV>


<DIV>Could anyone tell me how to write a dirve base on the sp isubsystem support 


of the Linux kernel.</DIV>


<DIV>&nbsp;</DIV>


<DIV>Let me repeat. I wonder how to write a driver base on the spi subsystem, to 


communciate with a spi slave. </DIV>


<DIV>Could any one give me an esay example that even without irq ?</DIV>


<DIV>&nbsp;</DIV>


<DIV>&nbsp;</DIV>


<DIV>&nbsp;</DIV>


<DIV>Thank you all.</DIV>


<DIV>&nbsp;</DIV>


<DIV>Shi ZeQin</DIV>


<DIV>&nbsp;</DIV>


<DIV>&nbsp;</DIV>


<DIV>&nbsp;</DIV></FONT></DIV></BODY></HTML>