linux-kernel - Re: [PATCH v2 2/3] ASoC: simple-card: move hp and mic detection to soc

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Date:   Mon, 11 Jun 2018 14:39:50 +0900
From:   "Katsuhiro Suzuki" <suzuki.katsuhiro@...ionext.com>
To:     "'Kuninori Morimoto'" <kuninori.morimoto.gx@...esas.com>
Cc:     "Mark Brown" <broonie@...nel.org>, <alsa-devel@...a-project.org>,
        "Masami Hiramatsu" <masami.hiramatsu@...aro.org>,
        "Jassi Brar" <jaswinder.singh@...aro.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 2/3] ASoC: simple-card: move hp and mic detection to soc_card probe

Hello Morimoto-san,

> -----Original Message-----
> From: Kuninori Morimoto <kuninori.morimoto.gx@...esas.com>
> Sent: Monday, June 11, 2018 2:27 PM
> To: Suzuki, Katsuhiro <suzuki.katsuhiro@...ionext.com>
> Cc: Mark Brown <broonie@...nel.org>; alsa-devel@...a-project.org; Masami
Hiramatsu
> <masami.hiramatsu@...aro.org>; Jassi Brar <jaswinder.singh@...aro.org>;
> linux-arm-kernel@...ts.infradead.org; linux-kernel@...r.kernel.org
> Subject: Re: [PATCH v2 2/3] ASoC: simple-card: move hp and mic detection to
soc_card
> probe
> 
> 
> Hi Katsuhiro-san
> 
> > This patch moves headphone and microphone detection to probe() of
> > snd_soc_card from init() of snd_soc_dai_link. This is because init()
> > is called (and an input device /dev/input/eventX is created too)
> > twice or above if simple card has two or more DAI links.
> >
> > Signed-off-by: Katsuhiro Suzuki <suzuki.katsuhiro@...ionext.com>
> 
> or above ?
> 

It seems if simple card has multiple DAI links, it creates multiple input 
devices.

For example simple card has 3-links, 3 input devices /dev/input/event0,
event1, event2 are created. Is it correct?


> > -	ret = asoc_simple_card_init_hp(rtd->card, &priv->hp_jack, PREFIX);
> > -	if (ret < 0)
> > -		return ret;
> > -
> > -	ret = asoc_simple_card_init_mic(rtd->card, &priv->mic_jack, PREFIX);
> > -	if (ret < 0)
> > -		return ret;
> (snip)
> > +	ret = asoc_simple_card_init_hp(card, &priv->hp_jack, NULL);
> > +	if (ret < 0)
> > +		return ret;
> > +
> > +	ret = asoc_simple_card_init_mic(card, &priv->mic_jack, NULL);
> > +	if (ret < 0)
> > +		return ret;
> 
> I think we want to keep "PREFIX" ?
> 

Oops... Thank you. I'll fix it.


Regards,
--
Katsuhiro Suzuki


> 
> Best regards
> ---
> Kuninori Morimoto