[PATCH][POWERPC] QE: Make QUICC Engine support a configurableoption

[Scott Wood]

On Thu, Mar 15, 2007 at 10:07:31AM -0500, Kumar Gala wrote:
>  config MPC836x_MDS
>  	bool "Freescale MPC836x MDS"
>  	select DEFAULT_UIMAGE
> -	select QUICC_ENGINE
>  	help
>  	  This option enables support for the MPC836x MDS Processor Board.
> 
>  endchoice
> 
> +config QUICC_ENGINE_83xx
> +	bool "QUICC Engine Support"
> +	select QUICC_ENGINE
> +	depends on PPC_MPC836x || PPC_MPC832x
> +	default y
> +	---help---
> +	  The QUICC Engine (QE) is a new generation of communications
> +	  coprocessors on Freescale embedded CPUs (akin to CPM in older chips).
> +	  Selecting this option means that you wish to build a kernel
> +	  for a machine with a QE coprocessor.
> +

Instead of doing it like this, what about having each QE-enabled SOC
select HAS_QUICC_ENGINE, and then have the user-configurable
QUICC_ENGINE option depend on HAS_QUICC_ENGINE?

That way, there's no need for separate 83xx and 85xx defines, and the
knowledge of which SOCs have QE is maintaned with the SOC entry, rather
than in a separate list.

-Scott