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ASoC: wm8994: Add digital loopback paths 

There is loopback control within the audio interfaces, provide control of
this as there are some obscure scenarios where this could be used in
production.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Mark Brown 2013-05-30 13:42:26 +01:00
parent 70bd3b298b
commit 50941968fc
1 changed files with 29 additions and 2 deletions
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31
sound/soc/codecs/wm8994.c
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@ -1494,6 +1494,24 @@ static const char *aif1dac_text[] = {
"AIF1DACDAT", "AIF3DACDAT",
};
static const char *loopback_text[] = {
"None", "ADCDAT",
};
static const struct soc_enum aif1_loopback_enum =
SOC_ENUM_SINGLE(WM8994_AIF1_CONTROL_2, WM8994_AIF1_LOOPBACK_SHIFT, 2,
loopback_text);
static const struct snd_kcontrol_new aif1_loopback =
SOC_DAPM_ENUM("AIF1 Loopback", aif1_loopback_enum);
static const struct soc_enum aif2_loopback_enum =
SOC_ENUM_SINGLE(WM8994_AIF2_CONTROL_2, WM8994_AIF2_LOOPBACK_SHIFT, 2,
loopback_text);
static const struct snd_kcontrol_new aif2_loopback =
SOC_DAPM_ENUM("AIF2 Loopback", aif2_loopback_enum);
static const struct soc_enum aif1dac_enum =
SOC_ENUM_SINGLE(WM8994_POWER_MANAGEMENT_6, 0, 2, aif1dac_text);
@ -1740,6 +1758,9 @@ SND_SOC_DAPM_ADC("DMIC1R", NULL, WM8994_POWER_MANAGEMENT_4, 2, 0),
SND_SOC_DAPM_ADC("ADCL", NULL, SND_SOC_NOPM, 1, 0),
SND_SOC_DAPM_ADC("ADCR", NULL, SND_SOC_NOPM, 0, 0),
SND_SOC_DAPM_MUX("AIF1 Loopback", SND_SOC_NOPM, 0, 0, &aif1_loopback),
SND_SOC_DAPM_MUX("AIF2 Loopback", SND_SOC_NOPM, 0, 0, &aif2_loopback),
SND_SOC_DAPM_POST("Debug log", post_ev),
};
@ -1871,9 +1892,9 @@ static const struct snd_soc_dapm_route intercon[] = {
{ "AIF1DAC2L", NULL, "AIF1DAC Mux" },
{ "AIF1DAC2R", NULL, "AIF1DAC Mux" },
{ "AIF1DAC Mux", "AIF1DACDAT", "AIF1DACDAT" },
{ "AIF1DAC Mux", "AIF1DACDAT", "AIF1 Loopback" },
{ "AIF1DAC Mux", "AIF3DACDAT", "AIF3DACDAT" },
{ "AIF2DAC Mux", "AIF2DACDAT", "AIF2DACDAT" },
{ "AIF2DAC Mux", "AIF2DACDAT", "AIF2 Loopback" },
{ "AIF2DAC Mux", "AIF3DACDAT", "AIF3DACDAT" },
{ "AIF2ADC Mux", "AIF2ADCDAT", "AIF2ADCL" },
{ "AIF2ADC Mux", "AIF2ADCDAT", "AIF2ADCR" },
@ -1924,6 +1945,12 @@ static const struct snd_soc_dapm_route intercon[] = {
{ "AIF3ADCDAT", "AIF2DACDAT", "AIF2DACL" },
{ "AIF3ADCDAT", "AIF2DACDAT", "AIF2DACR" },
/* Loopback */
{ "AIF1 Loopback", "ADCDAT", "AIF1ADCDAT" },
{ "AIF1 Loopback", "None", "AIF1DACDAT" },
{ "AIF2 Loopback", "ADCDAT", "AIF2ADCDAT" },
{ "AIF2 Loopback", "None", "AIF2DACDAT" },
/* Sidetone */
{ "Left Sidetone", "ADC/DMIC1", "ADCL Mux" },
{ "Left Sidetone", "DMIC2", "DMIC2L" },