From: Wolfram Sang <wsa-z923LK4zBo2bacvFa/9K2g@public.gmane.org>
To: Ezequiel Garcia
<ezequiel-30ULvvUtt6G51wMPkGsGjgyUoB5FGQPZ@public.gmane.org>
Cc: Walter Lozano
<walter-30ULvvUtt6G51wMPkGsGjgyUoB5FGQPZ@public.gmane.org>,
mika.westerberg-VuQAYsv1563Yd54FQh9/CA@public.gmane.org,
Romain.Baeriswyl-ux6zf3SgZrrQT0dZR+AlfA@public.gmane.org,
atull-yzvPICuk2ABMcg4IHK0kFoH6Mc4MB0Vx@public.gmane.org,
raymond.tan-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org,
carlpeng008-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org,
linux-i2c-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: [RFC] i2c: designware: Avoid initcall and initialize the driver like a regular one
Date: Tue, 23 Dec 2014 17:23:58 +0100 [thread overview]
Message-ID: <20141223162357.GA4467@katana> (raw)
In-Reply-To: <54998B1A.9020208-30ULvvUtt6G51wMPkGsGjgyUoB5FGQPZ@public.gmane.org>
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> >> This means there won't be any early users of the I2C platform driver in this
> >> scenario.
> >
> > There won't be with platform as well.
>
> Oh, OK. Then maybe you can clarify why all those i2c busses need to be
> registered with initcall in the first place?
Because they want to access PMICs early to have voltages ready when
other drivers are probed. This, again, is DT/platform independent.
All this is cruft from the pre-deferred-probe era. And pretty annoying
to deprecated although I'd love to do that.
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WARNING: multiple messages have this Message-ID (diff)
From: Wolfram Sang <wsa@the-dreams.de>
To: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
Cc: Walter Lozano <walter@vanguardiasur.com.ar>,
mika.westerberg@linux.intel.com, Romain.Baeriswyl@abilis.com,
atull@opensource.altera.com, raymond.tan@intel.com,
carlpeng008@gmail.com, linux-i2c@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [RFC] i2c: designware: Avoid initcall and initialize the driver like a regular one
Date: Tue, 23 Dec 2014 17:23:58 +0100 [thread overview]
Message-ID: <20141223162357.GA4467@katana> (raw)
In-Reply-To: <54998B1A.9020208@vanguardiasur.com.ar>
[-- Attachment #1: Type: text/plain, Size: 534 bytes --]
> >> This means there won't be any early users of the I2C platform driver in this
> >> scenario.
> >
> > There won't be with platform as well.
>
> Oh, OK. Then maybe you can clarify why all those i2c busses need to be
> registered with initcall in the first place?
Because they want to access PMICs early to have voltages ready when
other drivers are probed. This, again, is DT/platform independent.
All this is cruft from the pre-deferred-probe era. And pretty annoying
to deprecated although I'd love to do that.
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next prev parent reply other threads:[~2014-12-23 16:23 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-12-22 18:15 [RFC] i2c: designware: Avoid initcall and initialize the driver like a regular one Walter Lozano
2014-12-22 18:15 ` Walter Lozano
[not found] ` <1419272149-28716-1-git-send-email-walter-30ULvvUtt6G51wMPkGsGjgyUoB5FGQPZ@public.gmane.org>
2014-12-22 19:02 ` Wolfram Sang
2014-12-22 19:02 ` Wolfram Sang
2014-12-23 12:53 ` Walter Lozano
2014-12-23 12:53 ` Walter Lozano
2014-12-23 14:57 ` Ezequiel Garcia
2014-12-23 14:57 ` Ezequiel Garcia
[not found] ` <549982BE.3080500-30ULvvUtt6G51wMPkGsGjgyUoB5FGQPZ@public.gmane.org>
2014-12-23 15:26 ` Wolfram Sang
2014-12-23 15:26 ` Wolfram Sang
2014-12-23 15:32 ` Ezequiel Garcia
2014-12-23 15:32 ` Ezequiel Garcia
[not found] ` <54998B1A.9020208-30ULvvUtt6G51wMPkGsGjgyUoB5FGQPZ@public.gmane.org>
2014-12-23 16:23 ` Wolfram Sang [this message]
2014-12-23 16:23 ` Wolfram Sang
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