[alsa-devel] [PATCH] ASoC: add xtensa xtfpga I2S interface and platform

[Max Filippov]

On Tue, Oct 28, 2014 at 8:38 PM, Mark Brown <broonie at kernel.org> wrote:
> On Tue, Oct 28, 2014 at 08:00:45PM +0300, Max Filippov wrote:
>> On Tue, Oct 28, 2014 at 6:42 PM, Mark Brown <broonie at kernel.org> wrote:
>> >> > I would also expect to see the data transfer and I2S bits more split
>> >> > out, presumably this IP can actually be used in designs with a DMA
>> >> > controller and one would expect that for practical systems this would be
>> >> > the common case?
>
>> >> I don't know of other designs that use this IP block. Can we do it when
>> >> we get such users?
>
>> > 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?

-- 
Thanks.
-- Max