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Subject[PATCH 4/4] ASoC: wm8904: add DMIC support
Date
From: Pierluigi Passaro <pierluigi.p@variscite.com>

The WM8904 codec supports both ADC and DMIC inputs.
Add dedicated controls to support the additional routing.

Signed-off-by: Pierluigi Passaro <pierluigi.p@variscite.com>
Signed-off by: Alifer Moraes <alifer.m@variscite.com>
---
sound/soc/codecs/wm8904.c | 34 ++++++++++++++++++++++++++++++++++
1 file changed, 34 insertions(+)

diff --git a/sound/soc/codecs/wm8904.c b/sound/soc/codecs/wm8904.c
index 4121771db104..c7987dc81e4d 100644
--- a/sound/soc/codecs/wm8904.c
+++ b/sound/soc/codecs/wm8904.c
@@ -837,6 +837,26 @@ static int out_pga_event(struct snd_soc_dapm_widget *w,
return 0;
}

+static const char *dmic_text[] = {
+ "DMIC1", "DMIC2"
+};
+
+static SOC_ENUM_SINGLE_DECL(dmic_enum,
+ WM8904_DIGITAL_MICROPHONE_0, 11, dmic_text);
+
+static const struct snd_kcontrol_new dmic_mux =
+ SOC_DAPM_ENUM("DMIC Mux", dmic_enum);
+
+static const char *cin_text[] = {
+ "ADC", "DMIC"
+};
+
+static SOC_ENUM_SINGLE_DECL(cin_enum,
+ WM8904_DIGITAL_MICROPHONE_0, 12, cin_text);
+
+static const struct snd_kcontrol_new cin_mux =
+ SOC_DAPM_ENUM("Capture Input", cin_enum);
+
static const char *input_mode_text[] = {
"Single-Ended", "Differential Line", "Differential Mic"
};
@@ -930,6 +950,10 @@ SND_SOC_DAPM_INPUT("IN2R"),
SND_SOC_DAPM_INPUT("IN3L"),
SND_SOC_DAPM_INPUT("IN3R"),

+SND_SOC_DAPM_MUX("DMIC Mux", SND_SOC_NOPM, 0, 0, &dmic_mux),
+SND_SOC_DAPM_MUX("Left Capture Input", SND_SOC_NOPM, 0, 0, &cin_mux),
+SND_SOC_DAPM_MUX("Right Capture Input", SND_SOC_NOPM, 0, 0, &cin_mux),
+
SND_SOC_DAPM_SUPPLY("MICBIAS", WM8904_MIC_BIAS_CONTROL_0, 0, 0, NULL, 0),

SND_SOC_DAPM_MUX("Left Capture Mux", SND_SOC_NOPM, 0, 0, &lin_mux),
@@ -1093,11 +1117,21 @@ static const struct snd_soc_dapm_route adc_intercon[] = {
{ "AIFOUTL", NULL, "AIFOUTL Mux" },
{ "AIFOUTR", NULL, "AIFOUTR Mux" },

+ { "DMIC Mux", "DMIC1", "IN1L" },
+ { "DMIC Mux", "DMIC2", "IN1R" },
+
+ { "Left Capture Input", "ADC", "Left Capture PGA" },
+ { "Left Capture Input", "DMIC", "DMIC Mux" },
+ { "Right Capture Input", "ADC", "Right Capture PGA" },
+ { "Right Capture Input", "DMIC", "DMIC Mux" },
+
{ "ADCL", NULL, "CLK_DSP" },
{ "ADCL", NULL, "Left Capture PGA" },
+ { "ADCL", NULL, "Left Capture Input" },

{ "ADCR", NULL, "CLK_DSP" },
{ "ADCR", NULL, "Right Capture PGA" },
+ { "ADCR", NULL, "Right Capture Input" },
};

static const struct snd_soc_dapm_route dac_intercon[] = {
--
2.25.1
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