Subject: [alsa-devel] [RFC v2 PATCH 1/1] ASoC: soc-core: symmetry checking for each DAIs separately

From: [email-masked] (Liam Girdwood)
Date: Wed, 31 Aug 2011 11:52:53 +0100

On 30/08/11 03:54, Dong Aisheng-B29396 wrote:
>> -----Original Message-----
>> From: Tabi Timur-B04825
>> Sent: Tuesday, August 30, 2011 4:35 AM
>> To: Dong Aisheng-B29396
>> Cc: alsa-devel at alsa-project.org; lars at metafoo.de; s.hauer at pengutronix.de;
>> broonie at opensource.wolfsonmicro.com; w.sang at pengutronix.de; lrg at ti.com;
>> linux-arm-kernel at lists.infradead.org
>> Subject: Re: [alsa-devel] [RFC v2 PATCH 1/1] ASoC: soc-core: symmetry
>> checking for each DAIs separately
>>
>> On Mon, Aug 29, 2011 at 4:15 AM, Dong Aisheng <[email-masked]>
>> wrote:
>>> The orginal code does not cover the case that one DAI such as codec
>>> may be shared between other two DAIs(CPU).
>>
>> Can you give me an example of how this can occur?
>>
> 
> Pls check the following case used in mx28evk.
> static struct snd_soc_dai_link mxs_sgtl5000_dai[] = {
>         {
>                 .name           = "HiFi Tx",
>                 .stream_name    = "HiFi Playback",
>                 .codec_dai_name = "sgtl5000",
>                 .codec_name     = "sgtl5000.0-000a",
>                 .cpu_dai_name   = "mxs-saif.0",
>                 .platform_name  = "mxs-pcm-audio.0",
>                 .ops            = &mxs_sgtl5000_hifi_ops,
>         }, {
>                 .name           = "HiFi Rx",
>                 .stream_name    = "HiFi Capture",
>                 .codec_dai_name = "sgtl5000",
>                 .codec_name     = "sgtl5000.0-000a",
>                 .cpu_dai_name   = "mxs-saif.1",
>                 .platform_name  = "mxs-pcm-audio.1",
>                 .ops            = &mxs_sgtl5000_hifi_ops,
>         },
> };
> You can also refer to:
> http://thread.gmane.org/gmane.linux.ports.arm.kernel/129789/focus=129839
> 

Timur, iirc your driver has some special symmetry requirement (maybe something todo with having 2 DAIs) ?

I assume this is OK for you too ?

Acked-by: Liam Girdwood <[email-masked]>

Liam