linux-kernel - Re: [alsa-devel] [PATCH v2 3/5] ASoC: core: add support to snd_soc_dai_get_sdw

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Message-ID: <cc360858-571a-6a46-1789-1020bcbe4bca@linux.intel.com>
Date:   Tue, 13 Aug 2019 14:38:53 -0500
From:   Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
To:     Mark Brown <broonie@...nel.org>
Cc:     Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
        vkoul@...nel.org, devicetree@...r.kernel.org,
        alsa-devel@...a-project.org, bgoswami@...eaurora.org,
        plai@...eaurora.org, lgirdwood@...il.com,
        linux-kernel@...r.kernel.org, robh+dt@...nel.org,
        spapothi@...eaurora.org
Subject: Re: [alsa-devel] [PATCH v2 3/5] ASoC: core: add support to
 snd_soc_dai_get_sdw_stream()

On 8/13/19 2:18 PM, Mark Brown wrote:
> On Tue, Aug 13, 2019 at 02:15:18PM -0500, Pierre-Louis Bossart wrote:
>> On 8/13/19 1:06 PM, Srinivas Kandagatla wrote:
> 
>>> sorry for the confusion. It was too quick reply. :-)
>>> I was suppose to say sdw_stream_add_slave() instead of set_sdw_stream().
> 
>> ok, so get_sdw_stream() and set_sdw_stream() are not meant to be mirrors or
>> both implemented. It's just a helper to respectively get a context or set a
>> context but a get-modify-set type of operation is not expected.
> 
>> Do I get this right?
> 
> This seems like it's going to be confusing...

Indeed. I don't have a full understanding of that part to be honest, nor 
why we need something SoundWire-specific. We already abused the 
set_tdm_slot API to store an HDaudio stream, now we have a rather 
confusing stream information for SoundWire and I have about 3 other 
'stream' contexts in SOF... I am still doing basic cleanups but this has 
been on my radar for a while.