Re: [PATCH v1] ALSA: hda/tas2781: Add speaker id check for ASUS projects

[Takashi Iwai <tiwai@suse.de>]

On Fri, 11 Oct 2024 11:09:08 +0200,
Takashi Iwai wrote:
> 
> On Fri, 11 Oct 2024 10:53:03 +0200,
> Baojun Xu wrote:
> > 
> > Add speaker id check by gpio in ACPI for ASUS projects.
> 
> Please give more background info.  e.g. why is the speaker id check
> needed, what does this patch actually fix, and why it's specific to
> ASUS?

Also, for the future submissions, please send to
linux-sound@vger.kernel.org instead of alsa-devel ML.


thanks,

Takashi

> 
> 
> thanks,
> 
> Takashi
> 
> > 
> > Signed-off-by: Baojun Xu <baojun.xu@ti.com>
> > ---
> >  include/sound/tas2781.h         |  3 +++
> >  sound/pci/hda/tas2781_hda_i2c.c | 39 ++++++++++++++++++++++++++++++---
> >  2 files changed, 39 insertions(+), 3 deletions(-)
> > 
> > diff --git a/include/sound/tas2781.h b/include/sound/tas2781.h
> > index 8cd6da0480b7..f8a3dc13cbbc 100644
> > --- a/include/sound/tas2781.h
> > +++ b/include/sound/tas2781.h
> > @@ -107,6 +107,8 @@
> >  #define TASDEVICE_CMD_DELAY		0x3
> >  #define TASDEVICE_CMD_FIELD_W		0x4
> >  
> > +#define TAS2781_ASUS_ID			0x10430000
> > +
> >  enum audio_device {
> >  	TAS2563,
> >  	TAS2781,
> > @@ -156,6 +158,7 @@ struct tasdevice_priv {
> >  	struct tasdevice_rca rcabin;
> >  	struct calidata cali_data;
> >  	struct tasdevice_fw *fmw;
> > +	struct gpio_desc *speaker_id;
> >  	struct gpio_desc *reset;
> >  	struct mutex codec_lock;
> >  	struct regmap *regmap;
> > diff --git a/sound/pci/hda/tas2781_hda_i2c.c b/sound/pci/hda/tas2781_hda_i2c.c
> > index 370d847517f9..1f71927825b2 100644
> > --- a/sound/pci/hda/tas2781_hda_i2c.c
> > +++ b/sound/pci/hda/tas2781_hda_i2c.c
> > @@ -615,7 +615,7 @@ static void tasdev_fw_ready(const struct firmware *fmw, void *context)
> >  	struct tasdevice_priv *tas_priv = context;
> >  	struct tas2781_hda *tas_hda = dev_get_drvdata(tas_priv->dev);
> >  	struct hda_codec *codec = tas_priv->codec;
> > -	int i, ret;
> > +	int i, ret, spk_id;
> >  
> >  	pm_runtime_get_sync(tas_priv->dev);
> >  	mutex_lock(&tas_priv->codec_lock);
> > @@ -648,8 +648,23 @@ static void tasdev_fw_ready(const struct firmware *fmw, void *context)
> >  	tasdevice_dsp_remove(tas_priv);
> >  
> >  	tas_priv->fw_state = TASDEVICE_DSP_FW_PENDING;
> > -	scnprintf(tas_priv->coef_binaryname, 64, "TAS2XXX%04X.bin",
> > -		codec->core.subsystem_id & 0xffff);
> > +	if ((codec->core.subsystem_id & 0xffff0000) == TAS2781_ASUS_ID) {
> > +		// Speaker id need to be checked.
> > +		if (tas_priv->speaker_id)
> > +			spk_id = gpiod_get_value(tas_priv->speaker_id);
> > +		else
> > +			spk_id = 0;
> > +		if (spk_id < 0 || spk_id > 1) {
> > +			// Speaker id is not valid, use default.
> > +			dev_dbg(tas_priv->dev, "Wrong spk_id = %d\n", spk_id);
> > +			spk_id = 0;
> > +		}
> > +		scnprintf(tas_priv->coef_binaryname, 64, "TAS2XXX%04X%01d.bin",
> > +			codec->core.subsystem_id & 0xffff, spk_id);
> > +	} else {
> > +		scnprintf(tas_priv->coef_binaryname, 64, "TAS2XXX%04X.bin",
> > +			codec->core.subsystem_id & 0xffff);
> > +	}
> >  	ret = tasdevice_dsp_parser(tas_priv);
> >  	if (ret) {
> >  		dev_err(tas_priv->dev, "dspfw load %s error\n",
> > @@ -787,6 +802,15 @@ static void tas2781_hda_remove(struct device *dev)
> >  	tasdevice_remove(tas_hda->priv);
> >  }
> >  
> > +static const struct acpi_gpio_params speakerid_gpios = { 0, 0, false };
> > +static const struct acpi_gpio_params interrupt_gpios = { 1, 0, false };
> > +
> > +static const struct acpi_gpio_mapping tas2781_speaker_id_gpios[] = {
> > +	{ "speakerid-gpios", &speakerid_gpios, 1 },
> > +	{ "interrupt-gpios", &interrupt_gpios, 1 },
> > +	{ }
> > +};
> > +
> >  static int tas2781_hda_i2c_probe(struct i2c_client *clt)
> >  {
> >  	struct tas2781_hda *tas_hda;
> > @@ -823,6 +847,15 @@ static int tas2781_hda_i2c_probe(struct i2c_client *clt)
> >  	if (ret)
> >  		return dev_err_probe(tas_hda->dev, ret,
> >  			"Platform not supported\n");
> > +	ret = devm_acpi_dev_add_driver_gpios(tas_hda->dev,
> > +					     tas2781_speaker_id_gpios);
> > +	if (ret)
> > +		dev_info(tas_hda->dev, "Unable to add GPIO mapping table\n");
> > +
> > +	tas_hda->priv->speaker_id = devm_gpiod_get(tas_hda->dev, "speakerid",
> > +						   GPIOD_IN);
> > +	if (IS_ERR(tas_hda->priv->speaker_id))
> > +		dev_info(tas_hda->dev, "Failed to get Speaker id gpio.\n");
> >  
> >  	ret = tasdevice_init(tas_hda->priv);
> >  	if (ret)
> > -- 
> > 2.43.0
> >