linux-kernel - Re: [PATCH 1/7] pinctrl: UniPhier: add UniPhier pinctrl core support

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Date:	Thu, 9 Jul 2015 14:32:01 +0900
From:	Masahiro Yamada <yamada.masahiro@...ionext.com>
To:	Paul Bolle <pebolle@...cali.nl>
Cc:	linux-gpio@...r.kernel.org,
	Linus Walleij <linus.walleij@...aro.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH 1/7] pinctrl: UniPhier: add UniPhier pinctrl core support

Hi Paul,

2015-07-09 5:39 GMT+09:00 Paul Bolle <pebolle@...cali.nl>:
> Hi Masahiro,
>
> On wo, 2015-07-08 at 14:01 +0900, Masahiro Yamada wrote:
>> Actually, most of pinctrl drivers are boolean, but most of them
>> conventionally have MODULE_AUTHOR, THIS_MODULE, etc.
>>
>> I do not think it looks so weird.  Thought?
>
> It's a rather common pattern, but I think it's an anti-pattern
> nevertheless. See the discussion that Shobhit Kumar, Paul Gortmaker, and
> I had starting in https://lkml.org/lkml/2015/6/20/63 .
>
> Please let me know if you're unconvinced by the arguments brought
> forward by both Pauls in that discussion.
>


After I read your references and thought a bit more,
I am now considering to change the bool into tristate.

Pinctrl drivers usually contain quite big pin tables, so
it sounds somewhat reasonable to make it loadable,
given that minimal pin-settings could be done in the boot-loader.
Actually, some of pinctrl drivers in the mainline are already tristate.

I will send v2 later with some other fixes I have noticed.


Is this OK with you?


-- 
Best Regards
Masahiro Yamada
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