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From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
To: Daniel Baluta <daniel.baluta@gmail.com>
Cc: Linux-ALSA <alsa-devel@alsa-project.org>,
	"Sridharan, Ranjani" <ranjani.sridharan@intel.com>
Subject: Re: [alsa-devel] Question about FE & BE DPCM
Date: 15 Oct 2019 10:15:15 +0900	[thread overview]
Message-ID: <87o8yi6c7x.wl-kuninori.morimoto.gx@renesas.com> (raw)
In-Reply-To: <CAEnQRZAen_Aa7SMdnPY4ezzbYtUypShto7ENGV_FhnsNhnxmBQ@mail.gmail.com>


Hi Daniel

> »       /* BE is dummy */
> »       »       codecs->of_node»»       = NULL;
> »       »       codecs->dai_name»       = "snd-soc-dummy-dai";
> »       »       codecs->name»   »       = "snd-soc-dummy";
> 
> »       »       /* FE settings */
> »       »       dai_link->dynamic»      »       = 1;
> »       »       dai_link->dpcm_merged_format»   = 1;

Ahh, indeed... it is wrong comment.
It should be /* Codec is dummy */ here.
I will post fixup patch, soon.

Current simple-card is assuming

	FE: CPU-dummy
	BE: dummy-Codec

> asoc_simple_canonicalize_platform function where it does say:
> 
> »        * DPCM BE can be no platform.
> »        * Alloced memory will be waste, but not leak.
> »        */
> »       if (!dai_link->platforms->of_node)
> »       »       dai_link->num_platforms = 0;
> 
> But I do want to create a BE with a platform. So, should I try to
> revert the following

I see.
I'm not using but someone added asoc_simple_parse_platform().
Maybe it can help you (?), but it is not called/used under DPCM case.
If you can support it under DPCM, asoc_simple_canonicalize_platform()
is no longer your issue ?

Thank you for your help !!
Best regards
---
Kuninori Morimoto
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  parent reply	other threads:[~2019-10-15  1:16 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-10-11 21:05 [alsa-devel] Question about FE & BE DPCM Daniel Baluta
2019-10-11 21:56 ` Sridharan, Ranjani
2019-10-12  9:20   ` Daniel Baluta
2019-10-15  1:15 ` Kuninori Morimoto [this message]
2019-11-01 21:41   ` Daniel Baluta

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