linux-kernel - Re: [PATCH 3/3] gpio: MAX6650/6651 support

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <CAOMwXhNBNa4EKe8rVTtQeAwXGGwFaRu9az+4yHARdH1PnPW1yQ@mail.gmail.com>
Date:	Tue, 14 Jan 2014 17:17:18 +0000
From:	Laszlo Papp <lpapp@....org>
To:	Linus Walleij <linus.walleij@...aro.org>
Cc:	Guenter Roeck <linux@...ck-us.net>,
	Lee Jones <lee.jones@...aro.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 3/3] gpio: MAX6650/6651 support

> Even the gpio functionality itself? So, to clarify my question above,
> I thought it would be something like this:
>
> - gpio
>           \
>            ---
>               \
> - alarm ----- pinctrol
>               /
>          ----
> - etc /
>
> So, pinctrl on top of them, and only this high layer would be moved to
> pinctrl. Perhaps, I should check existing drivers and the pinctrl
> before asking this... Will have a look very soon.

I have just had a quick look and I am now worried.... It seems that
the pinctrl system was not as mature in 3.2 that I need to support as
these days... The short term task of mine is to get it working for
that release, and trying to upstream all this is an additional
bonus....

Hence, my question is: would it be acceptable to leave the gpio
functionality clearly separate and keep the pinctrl functionality on
top of it?

Failing that, is it somehow possible to get this functionality nicely
working with both versions? I am trying to do my best, but even I have
the limits. The definite target is 3.2.1 for us as of now. If it
cannot be nicely done without maintaining two relatively different
drivers until our update, I am afraid I would need to skip the
upstream now due to the lack of appropriate position.

I would appreciate any suggestion about it. The pinctrl system was
introduced in 3.1 if I am not mistaken, and 3.2 has lotta less drivers
around, etc... Not quite sure about the core foundation though.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/