linux-kernel - Re: [PATCH] ASoC: add xtensa xtfpga I2S interface and platform

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Message-ID: <CAMo8BfJJSTiYB14OjFgjH3K+AFbTF9DO9KkKUckAsgd8YDPs-w@mail.gmail.com>
Date:	Thu, 30 Oct 2014 00:10:56 +0300
From:	Max Filippov <jcmvbkbc@...il.com>
To:	Mark Brown <broonie@...nel.org>
Cc:	alsa-devel@...a-project.org,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	"linux-xtensa@...ux-xtensa.org" <linux-xtensa@...ux-xtensa.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Takashi Iwai <tiwai@...e.de>,
	Liam Girdwood <lgirdwood@...il.com>,
	Jaroslav Kysela <perex@...ex.cz>,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Grant Likely <grant.likely@...aro.org>
Subject: Re: [PATCH] ASoC: add xtensa xtfpga I2S interface and platform

On Thu, Oct 30, 2014 at 12:02 AM, Mark Brown <broonie@...nel.org> wrote:
> On Wed, Oct 29, 2014 at 05:23:15PM +0300, Max Filippov wrote:
>> On Tue, Oct 28, 2014 at 8:38 PM, Mark Brown <broonie@...nel.org> wrote:
>> > On Tue, Oct 28, 2014 at 08:00:45PM +0300, Max Filippov wrote:
>
>> >> > It's also about ensuring that the code is cleanly split up so that
>> >> > someone can actually go in and add the required support later (and TBH
>
>> >> Can you point me to an example of such split, so that I don't write it in
>> >> an unusual way?
>
>> > Essentially all drivers are split this way...
>
>> But all of them have DMA registers and I2S registers completely separated,
>> right? How do I share registers between pcm and i2s parts?
>
> Just keep the code physically separate so the DMA bits are hanging off
> the DMA operations and the interface setup bits are hanging off the DAI
> operations rather than all mixed in together.

Ok. Should I also move them to a separate file, or one file is good for now?

-- 
Thanks.
-- Max
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