[alsa-devel] SOC_DAPM_MUX implementation, routes missing and do I need more dapm definitions?

[Oleksandr Müller]

Hello guys,

I began with the implementation of a dapm mux and am almost done but I 
don't get how to configure the routes and I am not sure if I need more 
dapm definitions. As the capture stream is the source into the 
SE_IN_L/SE_IN_R I would say this should be the source for the left/right 
mux (right side of the route definition). Then I would need a switch in 
the middle and on the left side as the output should be the ADC1 (left 
side).

{ "ADC1", ADC1VINSWITCHLEFT, "SE_IN_L" }, I would think it should look 
something like this. But then I would need some SOC_DAPM_SINGLE, I think 
you can see I am clearly confused right now :)

I would like to have a mux where I can switch the vin source from vin1 
to vin4 in alsamixer and then its saved as a default. Because in the 
layout plan the vin4 is connected and needs to be selected...

My code so far looks like this:

static const char * const pcm1863_adc_vinl_src[] = {
         "VIN1l", "VIN4l"
};

static const char * const pcm1863_adc_vinr_src[] = {
         "VIN1r", "VIN4r"
};
/*Stereo ADC Source VIN1 left/right */
static SOC_ENUM_SINGLE_DECL(
         pcm1863_adc_vin1l_enum, PCM1863_ADC1_INPUT_SEL_L,
         PCM1863_SEL_L_VIN1_SFT, pcm1863_adc_vinl_src);

static SOC_ENUM_SINGLE_DECL(
         pcm1863_adc_vin1r_enum, PCM1863_ADC1_INPUT_SEL_R,
         PCM1863_SEL_R_VIN1_SFT, pcm1863_adc_vinr_src);
/*Stereo ADC Source VIN4 left/right */
static SOC_ENUM_SINGLE_DECL(
         pcm1863_adc_vin4l_enum, PCM1863_ADC1_INPUT_SEL_L,
         PCM1863_SEL_L_VIN4_SFT, pcm1863_adc_vinl_src);

static SOC_ENUM_SINGLE_DECL(
         pcm1863_adc_vin4r_enum, PCM1863_ADC1_INPUT_SEL_R,
         PCM1863_SEL_R_VIN4_SFT, pcm1863_adc_vinr_src);

static const struct snd_kcontrol_new pcm1863_adc_vin1l_mux =
         SOC_DAPM_ENUM("ADC VIN1l Source", pcm1863_adc_vin1l_enum);

static const struct snd_kcontrol_new pcm1863_adc_vin1r_mux =
         SOC_DAPM_ENUM("ADC VIN1r Source", pcm1863_adc_vin1r_enum);

static const struct snd_kcontrol_new pcm1863_adc_vin4l_mux =
         SOC_DAPM_ENUM("ADC VIN4l Source", pcm1863_adc_vin4l_enum);

static const struct snd_kcontrol_new pcm1863_adc_vin4r_mux =
         SOC_DAPM_ENUM("ADC VIN4r Source", pcm1863_adc_vin4r_enum);

static const struct snd_soc_dapm_widget pcm1863_dapm_widgets[] = {
         SND_SOC_DAPM_ADC("ADC1", NULL, SND_SOC_NOPM, 0, 0),
         SND_SOC_DAPM_INPUT("SE_IN_L"),
         SND_SOC_DAPM_INPUT("SE_IN_R"),
         SND_SOC_DAPM_MUX("ADC VIN1l Mux", SND_SOC_NOPM, 0, 0,
                                 &pcm1863_adc_vin1l_mux),
         SND_SOC_DAPM_MUX("ADC VIN1r Mux", SND_SOC_NOPM, 0, 0,
                                 &pcm1863_adc_vin1r_mux),
         SND_SOC_DAPM_MUX("ADC VIN1l Mux", SND_SOC_NOPM, 0, 0,
                                 &pcm1863_adc_vin4l_mux),
         SND_SOC_DAPM_MUX("ADC VIN1r Mux", SND_SOC_NOPM, 0, 0,
                                 &pcm1863_adc_vin4r_mux),
};

static const struct snd_soc_dapm_route pcm1863_dapm_routes[] = {
         { "ADC1", NULL, "SE_IN_L" },
         { "ADC1", NULL, "SE_IN_R" },
         { "SE_IN_L", NULL, "Capture" },
         { "SE_IN_R", NULL, "Capture" },
};