linux-kernel - Re: [PATCH 1/3] ASoC: da7219: Convert driver to use generic device/fwnode functions

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Message-ID: <20160506160536.GU6292@sirena.org.uk>
Date:	Fri, 6 May 2016 17:05:36 +0100
From:	Mark Brown <broonie@...nel.org>
To:	"Opensource [Adam Thomson]" <Adam.Thomson.Opensource@...semi.com>
Cc:	Liam Girdwood <lgirdwood@...il.com>,
	Jaroslav Kysela <perex@...ex.cz>,
	Takashi Iwai <tiwai@...e.com>,
	"alsa-devel@...a-project.org" <alsa-devel@...a-project.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Support Opensource <Support.Opensource@...semi.com>,
	Sathyanarayana Nujella <sathyanarayana.nujella@...el.com>
Subject: Re: [PATCH 1/3] ASoC: da7219: Convert driver to use generic
 device/fwnode functions

On Fri, May 06, 2016 at 02:33:04PM +0000, Opensource [Adam Thomson] wrote:
> On May 06, 2016, 13:27, Mark Brown wrote:

> > Is this *really* sensible?  DT idioms don't always match up with ACPI
> > idioms well and this isn't a trivial DT binding.

> For what we're doing here, both DT and ACPI match up well, and so what I've
> implemented works on both sides. There are other examples of this already in the
> Linux kernel, so I don't think it's anything particularly new.

No, not really - your DT is fairly unusual in how it's done and the lack
of ACPI helpers is not a good sign on that side.  The _DSD things are
really only supposed to work for simple properties on devices.

> > There's nothing device specific about this, it should go in generic
> > code.

> The intention was to just match against DT or ACPI and nothing else, so that
> didn't feel generic enough to be pushed into the fwnode framework. However
> I will take another look.

That's currently the entire set of things that fwnode supports so...

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