linux-kernel - Re: [PATCH 1/2] pinctrl: pinconf_generic: add utility functions for add map/configs

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Date:	Sat, 27 Jul 2013 15:44:48 +0530
From:	Laxman Dewangan <ldewangan@...dia.com>
To:	Stephen Warren <swarren@...dotorg.org>
CC:	"grant.likely@...aro.org" <grant.likely@...aro.org>,
	"linus.walleij@...aro.org" <linus.walleij@...aro.org>,
	"rob.herring@...xeda.com" <rob.herring@...xeda.com>,
	"rob@...dley.net" <rob@...dley.net>,
	"sameo@...ux.intel.com" <sameo@...ux.intel.com>,
	"lee.jones@...aro.org" <lee.jones@...aro.org>,
	"devicetree-discuss@...ts.ozlabs.org" 
	<devicetree-discuss@...ts.ozlabs.org>,
	"linux-doc@...r.kernel.org" <linux-doc@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"gg@...mlogic.co.uk" <gg@...mlogic.co.uk>,
	"kishon@...com" <kishon@...com>,
	Stephen Warren <swarren@...dia.com>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>
Subject: Re: [PATCH 1/2] pinctrl: pinconf_generic: add utility functions for
 add map/configs

On Friday 26 July 2013 11:06 PM, Stephen Warren wrote:
> On 07/26/2013 04:15 AM, Laxman Dewangan wrote:
>> Some of pincontrol driver needs the utility function to create map
>> list. The utility function needed for adding mux, configs etc.
> Which other drivers already contain this code? Are you planning on
> converting them over to use these new functions? The code looks
> familiar, so I assume it's just cut/paste from Tegra with some renames,
> so I didn't read it through in detail.

Yes, these functions are taken from the pinctrl-tegra driver. Other 
drivers which have similar implementation are nomadik, tegra, abx500, 
tz1090, tz1090-pdc.
So All can use these utility function to avoid duplication and reduce 
code size.
Yes, I have plan to use this in Tegra atleast but once this patch get 
accepted.


>
>>   drivers/pinctrl/pinconf-generic.c       |  105 +++++++++++++++++++++++++++++++
>>   include/linux/pinctrl/pinconf-generic.h |   52 +++++++++++++++
> I don't think those are the correct files for this code. Presumably
> there's no reason at all why a pinctrl driver that doesn't require
> CONFIG_GENERIC_PINCONF can't use these basic utility functions. Perhaps
> add a new pinctrl-utils file?

I thought generic implementation of parsing of dt is pinctrl-generic 
file and as these newly added APIs are require for the parsing the DT 
node, I added here.
I can move this to pinctrl-util.c/h also.



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