[PATCH/RFC] [POWERPC] CPM1: implement GPIO LIB API

[Anton Vorontsov]

Hi Jochen,

Thanks for the patch.

On Thu, Jan 17, 2008 at 01:07:48PM +0100, Jochen Friedrich wrote:
> Signed-off-by: Jochen Friedrich <jochen at scram.de>
> ---
> arch/powerpc/platforms/8xx/Kconfig |    2 +
> arch/powerpc/sysdev/commproc.c     |  162 
> +++++++++++++++++++++++++++++++++++-
> 2 files changed, 163 insertions(+), 1 deletions(-)

Something happened wrt long lines, your editor seem to wrap them. :-(

> diff --git a/arch/powerpc/platforms/8xx/Kconfig 
> b/arch/powerpc/platforms/8xx/Kconfig
> index 91fbe42..08e927c 100644
> --- a/arch/powerpc/platforms/8xx/Kconfig
> +++ b/arch/powerpc/platforms/8xx/Kconfig
[...]
> diff --git a/arch/powerpc/sysdev/commproc.c b/arch/powerpc/sysdev/commproc.c
> index 621bc6c..be78e65 100644
> --- a/arch/powerpc/sysdev/commproc.c
> +++ b/arch/powerpc/sysdev/commproc.c
[...]
> +int cpm1_gpiochip_add16(struct device_node *np)
> +{
> +	return of_mm_gpiochip_add(np, &cpm1_gc16);
> +}

(1)

> +int cpm1_gpiochip_add32(struct device_node *np)
> +{
> +	return of_mm_gpiochip_add(np, &cpm1_gc32);
> +}

(2)

> +static int cpm_init_par_io(void)
> +{
> +	struct device_node *np;
> +
> +	for_each_compatible_node(np, NULL, "fsl,cpm1-pario-bank16")
> +		cpm1_gpiochip_add16(np);
> +
> +	for_each_compatible_node(np, NULL, "fsl,cpm1-pario-bank32")
> +		cpm1_gpiochip_add32(np);
> +	return 0;
> +}
> +arch_initcall(cpm_init_par_io);

I was unable to use arch_initcall() because lack of kmalloc() that
early (needed for of_mm_gpiochip_add() and GPIO LIB in general). So,
does it really work here?

Though, I tried arch_initcall() in the board file, and well... link
order matters a lot, so arch_initcall could indeed work in the
arch/powerpc/sysdev/. I should try that for QE. :-)

If it works, you'd better make (1) and (2) static, or just remove
them completely, since there are no users outside of this file.

Thanks!

-- 
Anton Vorontsov
email: cbou at mail.ru
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