Add ALSA controls to configure the PDM clocks.
The clocks need to be configurable to accommodate various microphones
that use clocks for low power/low resolution modes to high power/high
resolution modes.
Signed-off-by: Dan Murphy <dmurphy@xxxxxx>
---
sound/soc/codecs/tlv320adcx140.c | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)
diff --git a/sound/soc/codecs/tlv320adcx140.c b/sound/soc/codecs/tlv320adcx140.c
index 0f713efde046..97634e0ca0ba 100644
--- a/sound/soc/codecs/tlv320adcx140.c
+++ b/sound/soc/codecs/tlv320adcx140.c
@@ -180,6 +180,17 @@ static const struct snd_kcontrol_new decimation_filter_controls[] = {
SOC_DAPM_ENUM("Decimation Filter", decimation_filter_enum),
};
+static const char * const pdmclk_text[] = {
+ "2.8224 MHz", "1.4112 MHz", "705.6 kHz", "5.6448 MHz"
+};
+
+static SOC_ENUM_SINGLE_DECL(pdmclk_select_enum, ADCX140_PDMCLK_CFG, 0,
+ pdmclk_text);
+
+static const struct snd_kcontrol_new pdmclk_div_controls[] = {
+ SOC_DAPM_ENUM("PDM Clk Divider Select", pdmclk_select_enum),
+};
+
static const char * const resistor_text[] = {
"2.5 kOhm", "10 kOhm", "20 kOhm"
};
@@ -416,6 +427,9 @@ static const struct snd_soc_dapm_widget adcx140_dapm_widgets[] = {
SND_SOC_DAPM_MUX("IN4 Analog Mic Resistor", SND_SOC_NOPM, 0, 0,
in4_resistor_controls),
+ SND_SOC_DAPM_MUX("PDM Clk Div Select", SND_SOC_NOPM, 0, 0,
+ pdmclk_div_controls),
+
SND_SOC_DAPM_MUX("Decimation Filter", SND_SOC_NOPM, 0, 0,
decimation_filter_controls),
};
@@ -493,6 +507,11 @@ static const struct snd_soc_dapm_route adcx140_audio_map[] = {
{"IN4 Analog Mic Resistor", "10 kOhm", "MIC4M Input Mux"},
{"IN4 Analog Mic Resistor", "20 kOhm", "MIC4M Input Mux"},
+ {"PDM Clk Div Select", "2.8224 MHz", "MIC1P Input Mux"},
+ {"PDM Clk Div Select", "1.4112 MHz", "MIC1P Input Mux"},
+ {"PDM Clk Div Select", "705.6 kHz", "MIC1P Input Mux"},
+ {"PDM Clk Div Select", "5.6448 MHz", "MIC1P Input Mux"},
+
{"MIC1 Analog Mux", "Line In", "MIC1P"},
{"MIC2 Analog Mux", "Line In", "MIC2P"},
{"MIC3 Analog Mux", "Line In", "MIC3P"},
--
2.26.2
