linux-kernel - Re: [PATCH] ASoC: da7219: Add Jack insertion detection polarity selection

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Message-ID: <ZFO1eLaz11iLo1Td@finisterre.sirena.org.uk>
Date:   Thu, 4 May 2023 22:39:04 +0900
From:   Mark Brown <broonie@...nel.org>
To:     David Rau <David.Rau.opensource@...renesas.com>
Cc:     support.opensource@...semi.com, lgirdwood@...il.com,
        perex@...ex.cz, tiwai@...e.com, alsa-devel@...a-project.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ASoC: da7219: Add Jack insertion detection polarity
 selection

On Thu, May 04, 2023 at 08:22:18AM +0000, David Rau wrote:

> +choice
> +	bool "DA7219 Jack insertion detection polarity selection"
> +	default DA7219_DEFAULT_JACK_INSERTION_POLARITY if (SND_SOC_DA7219)
> +
> +config DA7219_DEFAULT_JACK_INSERTION_POLARITY
> +    bool "Default polarity"
> +	depends on SND_SOC_DA7219
> +    help
> +	  Select this option if your DA7219 codec with default Jack insertion detection polarity (Low).
> +
> +config DA7219_INVERTED_JACK_INSERTION_POLARITY
> +    bool "Inverted polarity"
> +	depends on SND_SOC_DA7219
> +    help
> +	  Select this option if your DA7219 codec with inverted Jack insertion detection polarity (High).

I would expect these things to be fixed for a given board and therefore
configured with a DT property rather than a kernel config.  It should be
possible to use the same kernel on multiple boards.

> +
> +endchoice
> +
> +endif # SND_SOC_DA7219
> +
>  config SND_SOC_DA732X
>  	tristate
>  	depends on I2C
> diff --git a/sound/soc/codecs/da7219-aad.c b/sound/soc/codecs/da7219-aad.c
> index 993a0d00bc48..9d16112cff6b 100644
> --- a/sound/soc/codecs/da7219-aad.c
> +++ b/sound/soc/codecs/da7219-aad.c
> @@ -879,6 +879,18 @@ static void da7219_aad_handle_gnd_switch_time(struct snd_soc_component *componen
>  	}
>  }
>  
> +static void da7219_aad_handle_polarity(struct snd_soc_component *component)
> +{
> +	snd_soc_component_write(component, 0xF0, 0x8B);
> +
> +	if (IS_ENABLED(CONFIG_DA7219_DEFAULT_JACK_INSERTION_POLARITY))
> +		snd_soc_component_write(component, 0x75, 0x80);
> +	else if (IS_ENABLED(CONFIG_DA7219_INVERTED_JACK_INSERTION_POLARITY))
> +		snd_soc_component_write(component, 0x75, 0x00);
> +
> +	snd_soc_component_write(component, 0xF0, 0x00);
> +}
> +
>  /*
>   * Suspend/Resume
>   */
> @@ -955,8 +967,12 @@ int da7219_aad_init(struct snd_soc_component *component)
>  	snd_soc_component_update_bits(component, DA7219_ACCDET_CONFIG_1,
>  			    DA7219_BUTTON_CONFIG_MASK, 0);
>  
> +	/* Handle the default ground switch delay time */
>  	da7219_aad_handle_gnd_switch_time(component);
>  
> +	/* Handle the Jack insertion detection polarity */
> +	da7219_aad_handle_polarity(component);
> +
>  	da7219_aad->aad_wq = create_singlethread_workqueue("da7219-aad");
>  	if (!da7219_aad->aad_wq) {
>  		dev_err(component->dev, "Failed to create aad workqueue\n");
> -- 
> 2.17.1
> 

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