[alsa-devel] [PATCH 5/6] ESI W192M : Add text Line in/Mic for selecting input gain state

[Takashi Iwai]

At Mon, 16 Mar 2015 01:20:54 +0100,
klem.dev at gmail.com wrote:
> 
> From: Clément Guedez <klem.dev at gmail.com>
> 
> Add text Line in/Mic for selecting input gain state in mixer for ESI W192M.

What I meant is to change control name "Line Switch" to a different
suffix (oh, anyway there is a typo in the original code, it's written
as "switch", not "Switch"...)

The type of control element is identified by a string name rule in
some levels.  When a control is named as "XXX Switch", it's taken as a
boolean control.  For enum control, we usually take "Enum" suffix so
that alsa-lib simple mixer interface can recognize it as an enumerated
control.

(Hm, it's not mentioned in Documentation/sound/alsa/ControlNames.txt.
 An update is needed...)


Takashi

> 
> Signed-off-by: Clément Guedez <klem.dev at gmail.com>
> 
> diff --git a/sound/pci/ice1712/wtm.c b/sound/pci/ice1712/wtm.c
> index c7ffafa..a6e7afa 100644
> --- a/sound/pci/ice1712/wtm.c
> +++ b/sound/pci/ice1712/wtm.c
> @@ -339,8 +339,14 @@ static int stac9460_adc_vol_put(struct snd_kcontrol *kcontrol,
>  /*
>   * MIC / LINE switch fonction
>   */
> +static int stac9460_mic_sw_info(struct snd_kcontrol *kcontrol,
> +				struct snd_ctl_elem_info *uinfo)
> +{
> +	static const char * const texts[2] = { "Line In", "Mic" };
> +
> +	return snd_ctl_enum_info(uinfo, 1, 2, texts);
> +}
>  
> -#define stac9460_mic_sw_info		snd_ctl_boolean_mono_info
>  
>  static int stac9460_mic_sw_get(struct snd_kcontrol *kcontrol,
>  				struct snd_ctl_elem_value *ucontrol)
> @@ -354,7 +360,7 @@ static int stac9460_mic_sw_get(struct snd_kcontrol *kcontrol,
>  		val = stac9460_get(ice, STAC946X_GENERAL_PURPOSE);
>  	else
>  		val = stac9460_2_get(ice, STAC946X_GENERAL_PURPOSE);
> -	ucontrol->value.integer.value[0] = ~val>>7 & 0x1;
> +	ucontrol->value.enumerated.item[0] = (val >> 7) & 0x1;
>  	return 0;
>  }
>  
> @@ -370,7 +376,7 @@ static int stac9460_mic_sw_put(struct snd_kcontrol *kcontrol,
>  		old = stac9460_get(ice, STAC946X_GENERAL_PURPOSE);
>  	else
>  		old = stac9460_2_get(ice, STAC946X_GENERAL_PURPOSE);
> -	new = (~ucontrol->value.integer.value[0] << 7 & 0x80) | (old & ~0x80);
> +	new = (ucontrol->value.enumerated.item[0] << 7 & 0x80) | (old & ~0x80);
>  	change = (new != old);
>  	if (change) {
>  		if (id == 0)
> -- 
> 2.1.4
>