linux-kernel - Re: [PATCH v2 1/2] ASoC: Intel: sof_es8336: support a separate gpio to control headphone

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Date:   Tue, 5 Apr 2022 09:57:30 -0500
From:   Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
To:     Mauro Carvalho Chehab <mchehab@...nel.org>
Cc:     Mauro Carvalho Chehab <mchehab+huawei@...nel.org>,
        Hans de Goede <hdegoede@...hat.com>,
        Péter Ujfalusi <peter.ujfalusi@...ux.intel.com>,
        Bard Liao <yung-chuan.liao@...ux.intel.com>,
        Cezary Rojewski <cezary.rojewski@...el.com>,
        Jaroslav Kysela <perex@...ex.cz>,
        Jie Yang <yang.jie@...ux.intel.com>,
        Liam Girdwood <liam.r.girdwood@...ux.intel.com>,
        Mark Brown <broonie@...nel.org>, Takashi Iwai <tiwai@...e.com>,
        alsa-devel@...a-project.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 1/2] ASoC: Intel: sof_es8336: support a separate gpio
 to control headphone



On 4/5/22 03:44, Mauro Carvalho Chehab wrote:
> From: Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
> 
> Some devices may use both gpio0 and gpio1 to independently switch
> the speaker and the headphone.
> 
> Add support for that.
> 
> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
> Signed-off-by: Mauro Carvalho Chehab <mchehab@...nel.org>
> ---
> 
> See [PATCH v2 0/2] at: https://lore.kernel.org/all/cover.1649147890.git.mchehab@kernel.org/
> 
>   sound/soc/intel/boards/sof_es8336.c | 60 ++++++++++++++++++++++++-----
>   1 file changed, 50 insertions(+), 10 deletions(-)
> 
> diff --git a/sound/soc/intel/boards/sof_es8336.c b/sound/soc/intel/boards/sof_es8336.c
> index 5e0529aa4f1d..bcd80870d252 100644
> --- a/sound/soc/intel/boards/sof_es8336.c
> +++ b/sound/soc/intel/boards/sof_es8336.c
> @@ -30,6 +30,7 @@
>   #define SOF_ES8336_TGL_GPIO_QUIRK		BIT(4)
>   #define SOF_ES8336_ENABLE_DMIC			BIT(5)
>   #define SOF_ES8336_JD_INVERTED			BIT(6)
> +#define SOF_ES8336_HEADPHONE_GPIO		BIT(7)
>   
>   static unsigned long quirk;
>   
> @@ -39,7 +40,7 @@ MODULE_PARM_DESC(quirk, "Board-specific quirk override");
>   
>   struct sof_es8336_private {
>   	struct device *codec_dev;
> -	struct gpio_desc *gpio_pa;
> +	struct gpio_desc *gpio_pa, *gpio_pa_headphone;
>   	struct snd_soc_jack jack;
>   	struct list_head hdmi_pcm_list;
>   	bool speaker_en;
> @@ -51,15 +52,28 @@ struct sof_hdmi_pcm {
>   	int device;
>   };
>   
> -static const struct acpi_gpio_params pa_enable_gpio = { 0, 0, true };
> +static const struct acpi_gpio_params pa_enable_gpio0 = { 0, 0, true };
> +static const struct acpi_gpio_params pa_enable_gpio1 = { 1, 0, true };
> +
>   static const struct acpi_gpio_mapping acpi_es8336_gpios[] = {
> -	{ "pa-enable-gpios", &pa_enable_gpio, 1 },
> +	{ "pa-enable-gpios", &pa_enable_gpio0, 1 },
>   	{ }
>   };
>   
> -static const struct acpi_gpio_params quirk_pa_enable_gpio = { 1, 0, true };
>   static const struct acpi_gpio_mapping quirk_acpi_es8336_gpios[] = {
> -	{ "pa-enable-gpios", &quirk_pa_enable_gpio, 1 },
> +	{ "pa-enable-gpios", &pa_enable_gpio1, 1 },
> +	{ }
> +};
> +
> +static const struct acpi_gpio_mapping quirk_acpi_headphone_es8336_gpios[] = {
> +	{ "pa-enable-gpios", &pa_enable_gpio0, 1 },
> +	{ "pa-enable-headphone-gpios", &pa_enable_gpio1, 1 },
> +	{ }
> +};
> +
> +static const struct acpi_gpio_mapping quirk_tgl_acpi_headphone_es8336_gpios[] = {
> +	{ "pa-enable-gpios", &pa_enable_gpio1, 1 },
> +	{ "pa-enable-headphone-gpios", &pa_enable_gpio0, 1 },
>   	{ }

This is starting to be a bit messy, the initial gpios were really 
intended for speakers and should be clearly referring to speakers now. 
the TGL quirk really means gpio1 is used instead of gpio0, and I can't 
figure out what the 'pa' prefix is needed for.

Can I suggest the attached cleanup patch be added first? That would make 
it clearer and more readable IMHO. Compile-tested only since I don't 
have hardware.

Thanks!

View attachment "0001-ASoC-Intel-sof_es8336-simplify-speaker-gpio-naming.patch" of type "text/x-patch" (5176 bytes)