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Subject: Re: [PATCH/RFC] powerpc: Add MPC5200 Interrupt Controller support.
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Sylvain Munaut <tnt@246tNt.com>
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Date: Sun, 05 Nov 2006 12:13:46 +1100
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On Sun, 2006-11-05 at 01:27 +0100, Sylvain Munaut wrote:
> >> +	picnode = find_mpc52xx_picnode();
> >> +	sdmanode = find_mpc52xx_sdmanode();
> >>     
> >
> > Any reason why you have those inline 1-line functions and just not put
> > the actual of_find_* call in here ?
> >   
> I think it might be worth creating a
> arch/powerpc/sysdev/mpc52xx_common.c (we'll probably need it later on
> anyway)
> with a helper that would do

> - The find_node

I don't see why we need a helper for that at all in the first place :)

>  - get_address / translate /  get_size

That too

>  - ioremap
> 
> Something like :
> 
> intr = mpc52xx_find_and_map("mpc52xx-intr");
> sdma = mpc52xx_find_and_map("mpc52xx-sdma");

Hrm... I don't care that much but I also don't think we need that
helper. It's not saving much.

> would be more elegant. Especially since finding and mapping things like
> intr/sdma/xlb/cdm ... will be done at several place. That would prevent
> repeating all that code for nothing.

It's not much code to repeat ;) but if you want, I have no big problem
with that.

> Also, in the Makefile, I would make the compilation conditionnal to
> CONFIG_PPC_MPC52xx and not CONFIG_PPC_MPC52xx_PIC ...
> If you're on a 52xx, you most likely want the interrupt controller ...
> 
> But the CONFIG_PPC_MPC52xx option should be in arch/powerpc/Kconfig
> and not in the platform/embedded6xx/Kconfig

Ben.