linux-kernel - RE: [RFC PATCH 2/8] regulator: Add Dialog DA906x voltage regulators support.

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Date:	Thu, 9 May 2013 16:28:45 +0200 (CEST)
From:	Guennadi Liakhovetski <g.liakhovetski@....de>
To:	Anthony Olech <Anthony.Olech@...semi.com>
cc:	Krystian Garbaciak <Krystian.Garbaciak@...semi.com>,
	Mark Brown <broonie@...nsource.wolfsonmicro.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Samuel Ortiz <sameo@...ux.intel.com>,
	Alessandro Zummo <a.zummo@...ertech.it>,
	Jean Delvare <khali@...ux-fr.org>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Richard Purdie <rpurdie@...ys.net>
Subject: RE: [RFC PATCH 2/8] regulator: Add Dialog DA906x voltage regulators
 support.

Hi Tony

On Thu, 9 May 2013, Anthony Olech wrote:

> Hi Guennadi Liakhovetski,
> 
> Now that Krystian no longer works for Dialog I think that I might be 
> your best contact.
> As far as I am aware without doing any checking, the DA906x driver 
> should possibly cover the DA9063.

Good!

> If you need a driver, that would imply that you have some chips. Have 
> you tried our marketting department?

Yes, this (and a da9210) PMICs are used on one of the boards, I'm working 
with. I asked your marketing department for a da9210 datasheet, they tried 
to check with the board vendor, who is also my customer for this project, 
and so far they haven't been able to establish my involvement in this 
development. Have you also got a da9210 Linux driver? Do I have to wait 
for your marketing department clarifying my affiliation or could you make 
that driver available to me too? Or do you mean you might have a newer 
version of this driver available internally too?

Thanks
Guennadi

> Best regards,
> 
> Tony Olech
> 
> 
> > -----Original Message-----
> > From: Guennadi Liakhovetski [mailto:g.liakhovetski@....de]
> > Sent: 09 May 2013 15:06
> > To: Krystian Garbaciak
> > Cc: Mark Brown; linux-kernel@...r.kernel.org; Samuel Ortiz; Alessandro
> > Zummo; Jean Delvare; Dmitry Torokhov; Richard Purdie; Anthony Olech
> > Subject: Re: [RFC PATCH 2/8] regulator: Add Dialog DA906x voltage regulators
> > support.
> > 
> > (trimmed the CC a bit)
> > 
> > Hi Krystian
> > 
> > On Fri, 31 Aug 2012, Krystian Garbaciak wrote:
> > 
> > > > On Wed, Aug 29, 2012 at 03:50:00PM +0100, Krystian Garbaciak wrote:
> > 
> > Sorry for picking up a random mail from this old thread, unfortunately, I don't
> > have "0/8" in my archive.
> > 
> > I have to write a driver for the da9063 PMIC. Do you have an idea, whether it'd
> > be compatible with this driver? Do you plan to continue your work on this driver
> > or would you mind if I try to use these your patches and mainline them,
> > preserving your authorship and copyright, of course?
> > 
> > Thanks
> > Guennadi
> > 
> > > > > Because, for some regulators, this is required: val +=
> > > > > fvol->offset, I was only able to reduce it to the following form.
> > > >
> > > > What on earth makes you say this?  The above is obviously linear.
> > > >
> > > > Besides, you're missing several points here.  One is that you should
> > > > be using the framework features, another is that you should be
> > > > implementing _sel.
> > >
> > > Sorry, I've missed an obvious thing here. Instead of adding selector
> > > offset at runtime, I can substract apropriate voltage from .min_uV.
> > > Thanks for pointing this out.
> > >
> > > --
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> > >
> > 
> > ---
> > Guennadi Liakhovetski, Ph.D.
> > Freelance Open-Source Software Developer http://www.open-technology.de/
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---
Guennadi Liakhovetski, Ph.D.
Freelance Open-Source Software Developer
http://www.open-technology.de/
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