[ts-7000] Problem in mapping physical memory LED address to the kernel virtual space

[Abid Rashid <>]

 

Hi All,

I am trying to map LED memory address of the ts-7250 in a test driver.

 

I use iomap and iounmap calls to map the physical address of the LED register to the kernel virtual space.

 

Doing this kernel sucessfully allocate a virtual address and loads the device. But writing to this virtual address does not make any difference.

 

Secondly I get an ooops message when I unload the device with 'unregisterchrdev' and iounmap calls.

 

Does someone knows what care I need to do mapping LED register addresses to the virtual address space. do I need to add some offset for this or its mapping is handled in a different way.

 

thanks in anticipation.

Best Regards

Abid 

 

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