[PATCH] ASoC: tlv320adcx140: Add controls for PDM clk and edge

[Dan Murphy]

Add ALSA controls to configure the PDM clock and PDM input edges for the
4 digital mic inputs.

Signed-off-by: Dan Murphy <dmurphy@xxxxxx>
---
 sound/soc/codecs/tlv320adcx140.c | 74 +++++++++++++++++++++++++++++---
 1 file changed, 69 insertions(+), 5 deletions(-)

diff --git a/sound/soc/codecs/tlv320adcx140.c b/sound/soc/codecs/tlv320adcx140.c
index 0f713efde046..e860d3c62d64 100644
--- a/sound/soc/codecs/tlv320adcx140.c
+++ b/sound/soc/codecs/tlv320adcx140.c
@@ -180,6 +180,49 @@ 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 pdm_edge_text[] = {
+	"Negative", "Positive"
+};
+
+static SOC_ENUM_SINGLE_DECL(pdm1edge_select_enum, ADCX140_PDM_CFG, 7,
+			    pdm_edge_text);
+
+static SOC_ENUM_SINGLE_DECL(pdm2edge_select_enum, ADCX140_PDM_CFG, 6,
+			    pdm_edge_text);
+
+static SOC_ENUM_SINGLE_DECL(pdm3edge_select_enum, ADCX140_PDM_CFG, 5,
+			    pdm_edge_text);
+
+static SOC_ENUM_SINGLE_DECL(pdm4edge_select_enum, ADCX140_PDM_CFG, 4,
+			    pdm_edge_text);
+
+static const struct snd_kcontrol_new pdmin1_edge_controls[] = {
+	SOC_DAPM_ENUM("PDMIN1 Edge Select", pdm1edge_select_enum),
+};
+
+static const struct snd_kcontrol_new pdmin2_edge_controls[] = {
+	SOC_DAPM_ENUM("PDMIN2 Edge Select", pdm2edge_select_enum),
+};
+
+static const struct snd_kcontrol_new pdmin3_edge_controls[] = {
+	SOC_DAPM_ENUM("PDMIN3 Edge Select", pdm3edge_select_enum),
+};
+
+static const struct snd_kcontrol_new pdmin4_edge_controls[] = {
+	SOC_DAPM_ENUM("PDMIN4 Edge Select", pdm4edge_select_enum),
+};
+
 static const char * const resistor_text[] = {
 	"2.5 kOhm", "10 kOhm", "20 kOhm"
 };
@@ -416,6 +459,18 @@ 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("PDMIN1 Edge Select", SND_SOC_NOPM, 0, 0,
+			pdmin1_edge_controls),
+	SND_SOC_DAPM_MUX("PDMIN2 Edge Select", SND_SOC_NOPM, 0, 0,
+			pdmin2_edge_controls),
+	SND_SOC_DAPM_MUX("PDMIN3 Edge Select", SND_SOC_NOPM, 0, 0,
+			pdmin3_edge_controls),
+	SND_SOC_DAPM_MUX("PDMIN4 Edge Select", SND_SOC_NOPM, 0, 0,
+			pdmin4_edge_controls),
+
 	SND_SOC_DAPM_MUX("Decimation Filter", SND_SOC_NOPM, 0, 0,
 			decimation_filter_controls),
 };
@@ -493,6 +548,20 @@ 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"},
+
+	{"PDMIN1 Edge Select", "Negative", "MIC1P Input Mux"},
+	{"PDMIN1 Edge Select", "Positive", "MIC1P Input Mux"},
+	{"PDMIN2 Edge Select", "Negative", "MIC2P Input Mux"},
+	{"PDMIN2 Edge Select", "Positive", "MIC2P Input Mux"},
+	{"PDMIN3 Edge Select", "Negative", "MIC3P Input Mux"},
+	{"PDMIN3 Edge Select", "Positive", "MIC3P Input Mux"},
+	{"PDMIN4 Edge Select", "Negative", "MIC4P Input Mux"},
+	{"PDMIN4 Edge Select", "Positive", "MIC4P Input Mux"},
+
 	{"MIC1 Analog Mux", "Line In", "MIC1P"},
 	{"MIC2 Analog Mux", "Line In", "MIC2P"},
 	{"MIC3 Analog Mux", "Line In", "MIC3P"},
@@ -675,11 +744,6 @@ static int adcx140_set_dai_tdm_slot(struct snd_soc_dai *codec_dai,
 	struct adcx140_priv *adcx140 = snd_soc_component_get_drvdata(component);
 	unsigned int lsb;
 
-	if (tx_mask != rx_mask) {
-		dev_err(component->dev, "tx and rx masks must be symmetric\n");
-		return -EINVAL;
-	}
-
 	/* TDM based on DSP mode requires slots to be adjacent */
 	lsb = __ffs(tx_mask);
 	if ((lsb + 1) != __fls(tx_mask)) {
-- 
2.26.2