[PATCH 2/9] ARM: OMAP2+: SmartReflex: move the driver specific macros in include/linux/power
Cousson, Benoit
b-cousson at ti.com
Wed Apr 4 15:41:21 EDT 2012
On 4/4/2012 9:10 PM, Trilok Soni wrote:
> Hi Jean,
>
> On 3/19/2012 9:42 PM, jean.pihet at newoldbits.com wrote:
>> From: Jean Pihet<j-pihet at ti.com>
>>
>> Move the driver specific macros from the smartreflex header file
>> (arch/arm/mach-omap2/smartreflex.h) in a new header file
>> include/linux/power/smartreflex.h.
>>
>> This change makes the SmartReflex implementation ready for the move
>> to drivers/.
>
> I wonder why someone would need a new directory under drivers/power
> where the code is not about introducing new and generic AVS framework
> but it is all about OMAP specific code.
The main motivation is that it's a driver and thus does not have
anything to do inside mach-omap2.
Where will you put that otherwise?
> What if tomorrow new generic
> AVS framework comes from different chip vendor? I am sure this kind
> of technology would be common in newer embedded chips.
Probably, but this is hard to know with only one implementation so far
in the kernel.
I guess when someone else will start pushing some new AVS driver inside
the AVS directory, we might realize that there is enough common part to
create a frwmk.
IIRC, David Brownell was referring to the rule of three for such case.
Meaning that it worth having a generic fmwk when at least three
different drivers are doing the same kind of things.
Regards,
Benoit
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