linux-kernel - Re: [PATCH 2/2] ASoC: intel: byt: Add headset jack

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Date:   Thu, 19 Oct 2017 10:56:05 -0500
From:   Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
To:     Carlo Caione <carlo@...one.org>, linux@...lessm.com,
        bardliao@...ltek.com, oder_chiou@...ltek.com, broonie@...nel.org,
        alsa-devel@...a-project.org, linux-kernel@...r.kernel.org,
        tiwai@...e.com, albertchen@...ltek.com, edgar_shen@...ltek.com
Cc:     Carlo Caione <carlo@...lessm.com>
Subject: Re: [PATCH 2/2] ASoC: intel: byt: Add headset jack

On 10/19/17 6:03 AM, Carlo Caione wrote:
> From: Carlo Caione <carlo@...lessm.com>
> 
> Introduce an headset jack in the machine driver and register it to the
> codec driver.
> 
> Signed-off-by: Carlo Caione <carlo@...lessm.com>
> ---
>   sound/soc/intel/boards/bytcr_rt5651.c | 24 ++++++++++++++++++++++++
>   1 file changed, 24 insertions(+)
> 
> diff --git a/sound/soc/intel/boards/bytcr_rt5651.c b/sound/soc/intel/boards/bytcr_rt5651.c
> index 1dad5c98c9ef..0fc850e20fc0 100644
> --- a/sound/soc/intel/boards/bytcr_rt5651.c
> +++ b/sound/soc/intel/boards/bytcr_rt5651.c
> @@ -49,6 +49,8 @@ struct byt_rt5651_private {
>   	struct clk *mclk;
>   };
>   
> +static struct snd_soc_jack jack;

nit-pick: we usually push the jack into the structure just above.

> +
>   static unsigned long byt_rt5651_quirk = BYT_RT5651_DMIC_MAP |
>   					BYT_RT5651_DMIC_EN |
>   					BYT_RT5651_MCLK_EN;

wondering if we need quirks here to manage the IN2P/JD2 exclusion at 
some point.

> @@ -177,6 +179,17 @@ static const struct snd_kcontrol_new byt_rt5651_controls[] = {
>   	SOC_DAPM_PIN_SWITCH("Speaker"),
>   };
>   
> +static struct snd_soc_jack_pin bytcr_jack_pins[] = {
> +	{
> +		.pin	= "Headphone",
> +		.mask	= SND_JACK_HEADPHONE,
> +	},
> +	{
> +		.pin	= "Headset Mic",
> +		.mask	= SND_JACK_MICROPHONE,
> +	},
> +};
> +
>   static int byt_rt5651_aif1_hw_params(struct snd_pcm_substream *substream,
>   					struct snd_pcm_hw_params *params)
>   {
> @@ -244,6 +257,7 @@ static const struct dmi_system_id byt_rt5651_quirk_table[] = {
>   static int byt_rt5651_init(struct snd_soc_pcm_runtime *runtime)
>   {
>   	struct snd_soc_card *card = runtime->card;
> +	struct snd_soc_codec *codec = runtime->codec;
>   	struct byt_rt5651_private *priv = snd_soc_card_get_drvdata(card);
>   	const struct snd_soc_dapm_route *custom_map;
>   	int num_routes;
> @@ -301,6 +315,16 @@ static int byt_rt5651_init(struct snd_soc_pcm_runtime *runtime)
>   			dev_err(card->dev, "unable to set MCLK rate\n");
>   	}
>   
> +	ret = snd_soc_card_jack_new(runtime->card, "Headset",
> +				    SND_JACK_HEADSET, &jack,
> +				    bytcr_jack_pins, ARRAY_SIZE(bytcr_jack_pins));
> +	if (ret) {
> +		dev_err(runtime->dev, "Headset jack creation failed %d\n", ret);
> +		return ret;
> +	}
> +
> +	rt5651_set_jack_detect(codec, &jack);
> +
>   	return ret;
>   }
>   
>