On Tue, 2013-10-08 at 16:06 +0200, Mercier Ivan wrote:

Hi,

I'm working on a powerpc qoriq p3041 and trying to communicate with a
device by elbc bus in gpmc mode.

I 've integrated CONFIG_FSL_LBC in Linux which provide the basic functions.

Now I'm wondering how can I do read and write operations on the
bus.Where is mapped my device?

You'll need to use ioremap() or of_iomap() to map it.

Should I code .read and .write driver functions?How can I start?

How integrates my device in the device tree?

See Documentation/devicetree/bindings/powerpc/fsl/lbc.txt and examples
such as "board-control" in various device trees.

-Scott