linux-kernel - Re: [PATCH] ASoC: fsl_audmix: make clock and output src write only

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Date:   Wed, 16 Sep 2020 17:10:08 -0700
From:   Nicolin Chen <nicoleotsuka@...il.com>
To:     "Viorel Suman (OSS)" <viorel.suman@....nxp.com>
Cc:     Timur Tabi <timur@...nel.org>, Xiubo Li <Xiubo.Lee@...il.com>,
        Fabio Estevam <festevam@...il.com>,
        Shengjiu Wang <shengjiu.wang@...il.com>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>, alsa-devel@...a-project.org,
        linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
        NXP Linux Team <linux-imx@....com>,
        Viorel Suman <viorel.suman@...il.com>,
        Viorel Suman <viorel.suman@....com>
Subject: Re: [PATCH] ASoC: fsl_audmix: make clock and output src write only

On Mon, Sep 14, 2020 at 08:24:34PM +0300, Viorel Suman (OSS) wrote:
> From: Viorel Suman <viorel.suman@....com>
> 
> "alsactl -f state.conf store/restore" sequence fails because setting
> "mixing clock source" and "output source" requires active TDM clock
> being started for configuration propagation. Make these two controls
> write only so that their values are not stored at "alsactl store".
> 
> Signed-off-by: Viorel Suman <viorel.suman@....com>

Acked-by: Nicolin Chen <nicoleotsuka@...il.com>

> ---
>  sound/soc/fsl/fsl_audmix.c | 16 ++++++++++++----
>  1 file changed, 12 insertions(+), 4 deletions(-)
> 
> diff --git a/sound/soc/fsl/fsl_audmix.c b/sound/soc/fsl/fsl_audmix.c
> index a447baf..7ad5925 100644
> --- a/sound/soc/fsl/fsl_audmix.c
> +++ b/sound/soc/fsl/fsl_audmix.c
> @@ -199,10 +199,18 @@ static int fsl_audmix_put_out_src(struct snd_kcontrol *kcontrol,
>  
>  static const struct snd_kcontrol_new fsl_audmix_snd_controls[] = {
>  	/* FSL_AUDMIX_CTR controls */
> -	SOC_ENUM_EXT("Mixing Clock Source", fsl_audmix_enum[0],
> -		     snd_soc_get_enum_double, fsl_audmix_put_mix_clk_src),
> -	SOC_ENUM_EXT("Output Source", fsl_audmix_enum[1],
> -		     snd_soc_get_enum_double, fsl_audmix_put_out_src),
> +	{	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
> +		.name = "Mixing Clock Source",
> +		.info = snd_soc_info_enum_double,
> +		.access = SNDRV_CTL_ELEM_ACCESS_WRITE,
> +		.put = fsl_audmix_put_mix_clk_src,
> +		.private_value = (unsigned long)&fsl_audmix_enum[0] },
> +	{	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
> +		.name = "Output Source",
> +		.info = snd_soc_info_enum_double,
> +		.access = SNDRV_CTL_ELEM_ACCESS_WRITE,
> +		.put = fsl_audmix_put_out_src,
> +		.private_value = (unsigned long)&fsl_audmix_enum[1] },
>  	SOC_ENUM("Output Width", fsl_audmix_enum[2]),
>  	SOC_ENUM("Frame Rate Diff Error", fsl_audmix_enum[3]),
>  	SOC_ENUM("Clock Freq Diff Error", fsl_audmix_enum[4]),
> -- 
> 2.7.4
>