From mboxrd@z Thu Jan  1 00:00:00 1970
From: Mark Brown <broonie@kernel.org>
Subject: Re: [PATCH 01/15] mfd: add new driver for Sharp LoCoMo
Date: Wed, 5 Nov 2014 20:24:05 +0000
Message-ID: <20141105202405.GJ8509@sirena.org.uk>
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Cc: Linus Walleij <linus.walleij@linaro.org>,
	"linux-arm-kernel@lists.infradead.org"
	<linux-arm-kernel@lists.infradead.org>,
	"linux-gpio@vger.kernel.org" <linux-gpio@vger.kernel.org>,
	Linux Input <linux-input@vger.kernel.org>,
	"linux-leds@vger.kernel.org" <linux-leds@vger.kernel.org>,
	"linux-spi@vger.kernel.org" <linux-spi@vger.kernel.org>,
	"linux-fbdev@vger.kernel.org" <linux-fbdev@vger.kernel.org>,
	"alsa-devel@alsa-project.org" <alsa-devel@alsa-project.org>,
	Andrea Adami <andrea.adami@gmail.com>,
	Russell King <linux@arm.linux.org.uk>,
	Daniel Mack <daniel@zonque.org>,
	Haojian Zhuang <haojian.zhuang@gmail.com>,
	Robert Jarzmik <robert.jarzmik@free.fr>,
	Alexandre Courbot <gnurou@gmail.com>,
	Dmitry Torokhov <dmitry.torokhov@gmail.com>,
	Bryan Wu <cooloney@gmail.com>,
	Richard Purdie <rpurdie@rpsys.net>,
	Samuel Ortiz <sameo@linux.intel.com>,
	Lee Jones <lee.jones@linaro.org>
To: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
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On Thu, Nov 06, 2014 at 12:02:49AM +0400, Dmitry Eremin-Solenikov wrote:
> 2014-11-03 16:41 GMT+03:00 Linus Walleij <linus.walleij@linaro.org>:

> > The point is still the same: no unrelated code in drivers/mfd,
> > then either use IIO DAC as a middle layer or sink the DAC handling
> > into respective subdriver, i.e. push it into the backlight or
> > volume directly then.

> The problem is that the DAC is equally used by backlight and by sound
> device (WIP).
> What about true i2c device driver sitting in drivers/misc and exporting a regmap
> of 2 8-bit registers?

If it can just export registers that sounds like a MFD.  If it needs to
export functionality then like Linus says the IIO subsystem abstracts
DACs.

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