linux-kernel - Re: [UPDATED v2][PATCH 0/6] regulator: voltage and current regulator framework

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Date:	Fri, 22 Feb 2008 11:22:33 +0800
From:	"eric miao" <eric.y.miao@...il.com>
To:	"Liam Girdwood" <lg@...nsource.wolfsonmicro.com>
Cc:	"Russell King - ARM Linux" <linux@....linux.org.uk>,
	"Andrew Morton" <akpm@...ux-foundation.org>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	linux-arm-kernel <linux-arm-kernel@...ts.arm.linux.org.uk>
Subject: Re: [UPDATED v2][PATCH 0/6] regulator: voltage and current regulator framework

On Fri, Feb 22, 2008 at 12:26 AM, Liam Girdwood
<lg@...nsource.wolfsonmicro.com> wrote:
> On Thu, 2008-02-21 at 08:41 +0000, Russell King - ARM Linux wrote:
>  > On Wed, Feb 20, 2008 at 05:08:46PM +0000, Liam Girdwood wrote:
>  > > This patch series provides a generic framework to allow device drivers
>  > > to control voltage and current regulators on SoC based devices (e.g.
>  > > phones, gps, media players).
>  >
>  > Note that I'm explicitly avoiding commenting on this as far as PXA3xx
>  > devices go, until we're further down the road with PM support on that
>  > SoC.  It's not clear at present whether a generic PMIC framework will
>  > be suitable for this SoC since it's my understanding from Marvell that
>  > we need to talk to the PMIC from IRQs-off contexts.
>  >
>  > So don't take my silence as some sort of acceptance of this code; it
>  > isn't.
>
>  I wasn't ;)
>
>  It then might be worth adding this functionality at a later stage when
>  more can be said about PXA3xx PMIC support. We could always have a
>  version of the _set() functions that are designed to handle this case.
>
>  In the mean time this works well on 3 other SoC CPUs.
>
>  Liam
>

Liam,

I have a rough peek into the git tree on opensource.wolfsonmicro.com,
find another PMIC framework, and here instead is a regulator framework,
looks like a simplified or dedicated one. What is their relationship?

For those PMIC that covers additional features, like
  - usb vbus detection (or pull-up/pull-down)
  - audio codec
  - touch screen
  - battery monitor/ fuel gauge
  - battery charger
  - possible many others

How do you plan to handle them?

>
>
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-- 
Cheers
- eric
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