Re: [UIO] SMX UIO interface

[Armin Steinhoff]

 Ben Nizette wrote:
> On 01/09/2010, at 5:22 PM, Armin Steinhoff wrote:
>
> > Hi Ben,
> >
> > I have a question about the SMX UIO Interface.
> >
> > In the SMX module you are reading the data of the platform resourses:
> >
> >     regs = platform_get_resource(dev, IORESOURCE_MEM, 0);
> >     if (!regs) {
> >         dev_err(&dev->dev, "No memory resource specified\n");
> >         goto out_free;
> >     }
> >
> > But who sets these data initially ?
> Who ever sets up the platform device that will bind to this driver, usually the board code (eg on avr32 arch/avr32/boards/*/setup.c, ARM is somewhere under arch/arm/mach-*/ I think).
>
> The board code would create an array of struct resource with the appropriate memory regions and an IRQ entry, create a struct platform_device with the right content to bind to that driver, set the platform_device .resource field to the previously created array then call platform_device_register() to kick things off.

  That means there is additionally an individual driver of the board 
and the UIO interface is just for open up the hardware interfaces ?

  Thanks

--Armin


> 	--Ben.
>
> > Cheers
> >
> > --Armin

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