linux-kernel - Re: [PATCH linux-next 10/10] ASoC: rsnd: Add kctrl to configure dai's busif

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Date:   Fri, 28 Sep 2018 00:29:59 +0000
From:   Kuninori Morimoto <kuninori.morimoto.gx@...esas.com>
To:     <jiada_wang@...tor.com>
Cc:     <lgirdwood@...il.com>, <broonie@...nel.org>, <perex@...ex.cz>,
        <tiwai@...e.com>, <twischer@...adit-jv.com>,
        <dragos_tarcatu@...tor.com>, <alsa-devel@...a-project.org>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH linux-next 10/10] ASoC: rsnd: Add kctrl to configure dai's busif


Hi Jiada

Thank you for your patch

> ssi0, ssi1, ssi2, ssi3, ssi4 and ssi9 have busif0 to busif7,
> currently only busif0 is used by all ssi.
> But tdm split and tdm ex-split mode, which require busif1 to
> busif7.
> 
> This patch adds kctrl in ssi for dai-link, to make it possible
> to configure the busif used by each dai-link.
> Also adds rsnd_dma_addr_update() interface to make it possible
> to update dma data address when there is change in condition
> of dai connection.
> 
> Signed-off-by: Jiada Wang <jiada_wang@...tor.com>
> ---

Do we really need to select BUSIF number by kctrl ??
In other words, does *all* user need to know detail of SSI BUSIF connection ?
I think it should be selected automatically somehow.