ASoC: sn95031: add capture support

This patch adds the support for capture path in sn95031 codec.
This codec supports upto 6DMICs, 2 AMICs and Linein. The linein and AMICs
are connected through a MUX to ADC. The TX paths can be assigned to any of the
ADCs or DMICs.
Signed-off-by: NVinod Koul <vinod.koul@intel.com>
Signed-off-by: NHarsha Priya <priya.harsha@intel.com>
Acked-by: NLiam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

sound/soc/codecs/sn95031.c

@@ -33,6 +33,7 @@
 #include <sound/soc.h>
 #include <sound/soc-dapm.h>
 #include <sound/initval.h>
+#include <sound/tlv.h>
 #include "sn95031.h"
 
 #define SN95031_RATES (SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_44100)
@@ -145,6 +146,129 @@ static int sn95031_vihf_event(struct snd_soc_dapm_widget *w,
 	return 0;
 }
 
+static int sn95031_dmic12_event(struct snd_soc_dapm_widget *w,
+			struct snd_kcontrol *k, int event)
+{
+	unsigned int ldo = 0, clk_dir = 0, data_dir = 0;
+
+	if (SND_SOC_DAPM_EVENT_ON(event)) {
+		ldo = BIT(5)|BIT(4);
+		clk_dir = BIT(0);
+		data_dir = BIT(7);
+	}
+	/* program DMIC LDO, clock and set clock */
+	snd_soc_update_bits(w->codec, SN95031_MICBIAS, BIT(5)|BIT(4), ldo);
+	snd_soc_update_bits(w->codec, SN95031_DMICBUF0123, BIT(0), clk_dir);
+	snd_soc_update_bits(w->codec, SN95031_DMICBUF0123, BIT(7), data_dir);
+	return 0;
+}
+
+static int sn95031_dmic34_event(struct snd_soc_dapm_widget *w,
+			struct snd_kcontrol *k, int event)
+{
+	unsigned int ldo = 0, clk_dir = 0, data_dir = 0;
+
+	if (SND_SOC_DAPM_EVENT_ON(event)) {
+		ldo = BIT(5)|BIT(4);
+		clk_dir = BIT(2);
+		data_dir = BIT(1);
+	}
+	/* program DMIC LDO, clock and set clock */
+	snd_soc_update_bits(w->codec, SN95031_MICBIAS, BIT(5)|BIT(4), ldo);
+	snd_soc_update_bits(w->codec, SN95031_DMICBUF0123, BIT(2), clk_dir);
+	snd_soc_update_bits(w->codec, SN95031_DMICBUF45, BIT(1), data_dir);
+	return 0;
+}
+
+static int sn95031_dmic56_event(struct snd_soc_dapm_widget *w,
+			struct snd_kcontrol *k, int event)
+{
+	unsigned int ldo = 0;
+
+	if (SND_SOC_DAPM_EVENT_ON(event))
+		ldo = BIT(7)|BIT(6);
+
+	/* program DMIC LDO */
+	snd_soc_update_bits(w->codec, SN95031_MICBIAS, BIT(7)|BIT(6), ldo);
+	return 0;
+}
+
+/* mux controls */
+static const char *sn95031_mic_texts[] = { "AMIC", "LineIn" };
+
+static const struct soc_enum sn95031_micl_enum =
+	SOC_ENUM_SINGLE(SN95031_ADCCONFIG, 1, 2, sn95031_mic_texts);
+
+static const struct snd_kcontrol_new sn95031_micl_mux_control =
+	SOC_DAPM_ENUM("Route", sn95031_micl_enum);
+
+static const struct soc_enum sn95031_micr_enum =
+	SOC_ENUM_SINGLE(SN95031_ADCCONFIG, 3, 2, sn95031_mic_texts);
+
+static const struct snd_kcontrol_new sn95031_micr_mux_control =
+	SOC_DAPM_ENUM("Route", sn95031_micr_enum);
+
+static const char *sn95031_input_texts[] = {	"DMIC1", "DMIC2", "DMIC3",
+						"DMIC4", "DMIC5", "DMIC6",
+						"ADC Left", "ADC Right" };
+
+static const struct soc_enum sn95031_input1_enum =
+	SOC_ENUM_SINGLE(SN95031_AUDIOMUX12, 0, 8, sn95031_input_texts);
+
+static const struct snd_kcontrol_new sn95031_input1_mux_control =
+	SOC_DAPM_ENUM("Route", sn95031_input1_enum);
+
+static const struct soc_enum sn95031_input2_enum =
+	SOC_ENUM_SINGLE(SN95031_AUDIOMUX12, 4, 8, sn95031_input_texts);
+
+static const struct snd_kcontrol_new sn95031_input2_mux_control =
+	SOC_DAPM_ENUM("Route", sn95031_input2_enum);
+
+static const struct soc_enum sn95031_input3_enum =
+	SOC_ENUM_SINGLE(SN95031_AUDIOMUX34, 0, 8, sn95031_input_texts);
+
+static const struct snd_kcontrol_new sn95031_input3_mux_control =
+	SOC_DAPM_ENUM("Route", sn95031_input3_enum);
+
+static const struct soc_enum sn95031_input4_enum =
+	SOC_ENUM_SINGLE(SN95031_AUDIOMUX34, 4, 8, sn95031_input_texts);
+
+static const struct snd_kcontrol_new sn95031_input4_mux_control =
+	SOC_DAPM_ENUM("Route", sn95031_input4_enum);
+
+/* capture path controls */
+
+static const char *sn95031_micmode_text[] = {"Single Ended", "Differential"};
+
+/* 0dB to 30dB in 10dB steps */
+static const DECLARE_TLV_DB_SCALE(mic_tlv, 0, 10, 30);
+
+static const struct soc_enum sn95031_micmode1_enum =
+	SOC_ENUM_SINGLE(SN95031_MICAMP1, 1, 2, sn95031_micmode_text);
+static const struct soc_enum sn95031_micmode2_enum =
+	SOC_ENUM_SINGLE(SN95031_MICAMP2, 1, 2, sn95031_micmode_text);
+
+static const char *sn95031_dmic_cfg_text[] = {"GPO", "DMIC"};
+
+static const struct soc_enum sn95031_dmic12_cfg_enum =
+	SOC_ENUM_SINGLE(SN95031_DMICMUX, 0, 2, sn95031_dmic_cfg_text);
+static const struct soc_enum sn95031_dmic34_cfg_enum =
+	SOC_ENUM_SINGLE(SN95031_DMICMUX, 1, 2, sn95031_dmic_cfg_text);
+static const struct soc_enum sn95031_dmic56_cfg_enum =
+	SOC_ENUM_SINGLE(SN95031_DMICMUX, 2, 2, sn95031_dmic_cfg_text);
+
+static const struct snd_kcontrol_new sn95031_snd_controls[] = {
+	SOC_ENUM("Mic1Mode Capture Route", sn95031_micmode1_enum),
+	SOC_ENUM("Mic2Mode Capture Route", sn95031_micmode2_enum),
+	SOC_ENUM("DMIC12 Capture Route", sn95031_dmic12_cfg_enum),
+	SOC_ENUM("DMIC34 Capture Route", sn95031_dmic34_cfg_enum),
+	SOC_ENUM("DMIC56 Capture Route", sn95031_dmic56_cfg_enum),
+	SOC_SINGLE_TLV("Mic1 Capture Volume", SN95031_MICAMP1,
+			2, 4, 0, mic_tlv),
+	SOC_SINGLE_TLV("Mic2 Capture Volume", SN95031_MICAMP2,
+			2, 4, 0, mic_tlv),
+};
+
 /* DAPM widgets */
 static const struct snd_soc_dapm_widget sn95031_dapm_widgets[] = {
 
@@ -159,6 +283,36 @@ static const struct snd_soc_dapm_widget sn95031_dapm_widgets[] = {
 	SND_SOC_DAPM_OUTPUT("VIB1OUT"),
 	SND_SOC_DAPM_OUTPUT("VIB2OUT"),
 
+	SND_SOC_DAPM_INPUT("AMIC1"), /* headset mic */
+	SND_SOC_DAPM_INPUT("AMIC2"),
+	SND_SOC_DAPM_INPUT("DMIC1"),
+	SND_SOC_DAPM_INPUT("DMIC2"),
+	SND_SOC_DAPM_INPUT("DMIC3"),
+	SND_SOC_DAPM_INPUT("DMIC4"),
+	SND_SOC_DAPM_INPUT("DMIC5"),
+	SND_SOC_DAPM_INPUT("DMIC6"),
+	SND_SOC_DAPM_INPUT("LINEINL"),
+	SND_SOC_DAPM_INPUT("LINEINR"),
+
+	SND_SOC_DAPM_MICBIAS("AMIC1Bias", SN95031_MICBIAS, 2, 0),
+	SND_SOC_DAPM_MICBIAS("AMIC2Bias", SN95031_MICBIAS, 3, 0),
+	SND_SOC_DAPM_MICBIAS("DMIC12Bias", SN95031_DMICMUX, 3, 0),
+	SND_SOC_DAPM_MICBIAS("DMIC34Bias", SN95031_DMICMUX, 4, 0),
+	SND_SOC_DAPM_MICBIAS("DMIC56Bias", SN95031_DMICMUX, 5, 0),
+
+	SND_SOC_DAPM_SUPPLY("DMIC12supply", SN95031_DMICLK, 0, 0,
+				sn95031_dmic12_event,
+				SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
+	SND_SOC_DAPM_SUPPLY("DMIC34supply", SN95031_DMICLK, 1, 0,
+				sn95031_dmic34_event,
+				SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
+	SND_SOC_DAPM_SUPPLY("DMIC56supply", SN95031_DMICLK, 2, 0,
+				sn95031_dmic56_event,
+				SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
+
+	SND_SOC_DAPM_AIF_OUT("PCM_Out", "Capture", 0,
+			SND_SOC_NOPM, 0, 0),
+
 	SND_SOC_DAPM_SUPPLY("Headset Rail", SND_SOC_NOPM, 0, 0,
 			sn95031_vhs_event,
 			SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
@@ -209,6 +363,40 @@ static const struct snd_soc_dapm_widget sn95031_dapm_widgets[] = {
 			SN95031_VIB1C5, 1, 0),
 	SND_SOC_DAPM_DAC("Vibra2 DAC", "Vibra2",
 			SN95031_VIB2C5, 1, 0),
+
+	/* capture widgets */
+	SND_SOC_DAPM_PGA("LineIn Enable Left", SN95031_MICAMP1,
+				7, 0, NULL, 0),
+	SND_SOC_DAPM_PGA("LineIn Enable Right", SN95031_MICAMP2,
+				7, 0, NULL, 0),
+
+	SND_SOC_DAPM_PGA("MIC1 Enable", SN95031_MICAMP1, 0, 0, NULL, 0),
+	SND_SOC_DAPM_PGA("MIC2 Enable", SN95031_MICAMP2, 0, 0, NULL, 0),
+	SND_SOC_DAPM_PGA("TX1 Enable", SN95031_AUDIOTXEN, 2, 0, NULL, 0),
+	SND_SOC_DAPM_PGA("TX2 Enable", SN95031_AUDIOTXEN, 3, 0, NULL, 0),
+	SND_SOC_DAPM_PGA("TX3 Enable", SN95031_AUDIOTXEN, 4, 0, NULL, 0),
+	SND_SOC_DAPM_PGA("TX4 Enable", SN95031_AUDIOTXEN, 5, 0, NULL, 0),
+
+	/* ADC have null stream as they will be turned ON by TX path */
+	SND_SOC_DAPM_ADC("ADC Left", NULL,
+			SN95031_ADCCONFIG, 0, 0),
+	SND_SOC_DAPM_ADC("ADC Right", NULL,
+			SN95031_ADCCONFIG, 2, 0),
+
+	SND_SOC_DAPM_MUX("Mic_InputL Capture Route",
+			SND_SOC_NOPM, 0, 0, &sn95031_micl_mux_control),
+	SND_SOC_DAPM_MUX("Mic_InputR Capture Route",
+			SND_SOC_NOPM, 0, 0, &sn95031_micr_mux_control),
+
+	SND_SOC_DAPM_MUX("Txpath1 Capture Route",
+			SND_SOC_NOPM, 0, 0, &sn95031_input1_mux_control),
+	SND_SOC_DAPM_MUX("Txpath2 Capture Route",
+			SND_SOC_NOPM, 0, 0, &sn95031_input2_mux_control),
+	SND_SOC_DAPM_MUX("Txpath3 Capture Route",
+			SND_SOC_NOPM, 0, 0, &sn95031_input3_mux_control),
+	SND_SOC_DAPM_MUX("Txpath4 Capture Route",
+			SND_SOC_NOPM, 0, 0, &sn95031_input4_mux_control),
+
 };
 
 static const struct snd_soc_dapm_route sn95031_audio_map[] = {
@@ -250,6 +438,87 @@ static const struct snd_soc_dapm_route sn95031_audio_map[] = {
 	{ "Lineout Right Playback", NULL, "Headset Right Filter"},
 	{ "Lineout Right Playback", NULL, "Speaker Right Filter"},
 	{ "Lineout Right Playback", NULL, "Vibra2 DAC"},
+
+	/* Headset (AMIC1) mic */
+	{ "AMIC1Bias", NULL, "AMIC1"},
+	{ "MIC1 Enable", NULL, "AMIC1Bias"},
+	{ "Mic_InputL Capture Route", "AMIC", "MIC1 Enable"},
+
+	/* AMIC2 */
+	{ "AMIC2Bias", NULL, "AMIC2"},
+	{ "MIC2 Enable", NULL, "AMIC2Bias"},
+	{ "Mic_InputR Capture Route", "AMIC", "MIC2 Enable"},
+
+
+	/* Linein */
+	{ "LineIn Enable Left", NULL, "LINEINL"},
+	{ "LineIn Enable Right", NULL, "LINEINR"},
+	{ "Mic_InputL Capture Route", "LineIn", "LineIn Enable Left"},
+	{ "Mic_InputR Capture Route", "LineIn", "LineIn Enable Right"},
+
+	/* ADC connection */
+	{ "ADC Left", NULL, "Mic_InputL Capture Route"},
+	{ "ADC Right", NULL, "Mic_InputR Capture Route"},
+
+	/*DMIC connections */
+	{ "DMIC1", NULL, "DMIC12supply"},
+	{ "DMIC2", NULL, "DMIC12supply"},
+	{ "DMIC3", NULL, "DMIC34supply"},
+	{ "DMIC4", NULL, "DMIC34supply"},
+	{ "DMIC5", NULL, "DMIC56supply"},
+	{ "DMIC6", NULL, "DMIC56supply"},
+
+	{ "DMIC12Bias", NULL, "DMIC1"},
+	{ "DMIC12Bias", NULL, "DMIC2"},
+	{ "DMIC34Bias", NULL, "DMIC3"},
+	{ "DMIC34Bias", NULL, "DMIC4"},
+	{ "DMIC56Bias", NULL, "DMIC5"},
+	{ "DMIC56Bias", NULL, "DMIC6"},
+
+	/*TX path inputs*/
+	{ "Txpath1 Capture Route", "ADC Left", "ADC Left"},
+	{ "Txpath2 Capture Route", "ADC Left", "ADC Left"},
+	{ "Txpath3 Capture Route", "ADC Left", "ADC Left"},
+	{ "Txpath4 Capture Route", "ADC Left", "ADC Left"},
+	{ "Txpath1 Capture Route", "ADC Right", "ADC Right"},
+	{ "Txpath2 Capture Route", "ADC Right", "ADC Right"},
+	{ "Txpath3 Capture Route", "ADC Right", "ADC Right"},
+	{ "Txpath4 Capture Route", "ADC Right", "ADC Right"},
+	{ "Txpath1 Capture Route", NULL, "DMIC1"},
+	{ "Txpath2 Capture Route", NULL, "DMIC1"},
+	{ "Txpath3 Capture Route", NULL, "DMIC1"},
+	{ "Txpath4 Capture Route", NULL, "DMIC1"},
+	{ "Txpath1 Capture Route", NULL, "DMIC2"},
+	{ "Txpath2 Capture Route", NULL, "DMIC2"},
+	{ "Txpath3 Capture Route", NULL, "DMIC2"},
+	{ "Txpath4 Capture Route", NULL, "DMIC2"},
+	{ "Txpath1 Capture Route", NULL, "DMIC3"},
+	{ "Txpath2 Capture Route", NULL, "DMIC3"},
+	{ "Txpath3 Capture Route", NULL, "DMIC3"},
+	{ "Txpath4 Capture Route", NULL, "DMIC3"},
+	{ "Txpath1 Capture Route", NULL, "DMIC4"},
+	{ "Txpath2 Capture Route", NULL, "DMIC4"},
+	{ "Txpath3 Capture Route", NULL, "DMIC4"},
+	{ "Txpath4 Capture Route", NULL, "DMIC4"},
+	{ "Txpath1 Capture Route", NULL, "DMIC5"},
+	{ "Txpath2 Capture Route", NULL, "DMIC5"},
+	{ "Txpath3 Capture Route", NULL, "DMIC5"},
+	{ "Txpath4 Capture Route", NULL, "DMIC5"},
+	{ "Txpath1 Capture Route", NULL, "DMIC6"},
+	{ "Txpath2 Capture Route", NULL, "DMIC6"},
+	{ "Txpath3 Capture Route", NULL, "DMIC6"},
+	{ "Txpath4 Capture Route", NULL, "DMIC6"},
+
+	/* tx path */
+	{ "TX1 Enable", NULL, "Txpath1 Capture Route"},
+	{ "TX2 Enable", NULL, "Txpath2 Capture Route"},
+	{ "TX3 Enable", NULL, "Txpath3 Capture Route"},
+	{ "TX4 Enable", NULL, "Txpath4 Capture Route"},
+	{ "PCM_Out", NULL, "TX1 Enable"},
+	{ "PCM_Out", NULL, "TX2 Enable"},
+	{ "PCM_Out", NULL, "TX3 Enable"},
+	{ "PCM_Out", NULL, "TX4 Enable"},
+
 };
 
 /* speaker and headset mutes, for audio pops and clicks */
@@ -339,6 +608,13 @@ struct snd_soc_dai_driver sn95031_dais[] = {
 		.rates = SN95031_RATES,
 		.formats = SN95031_FORMATS,
 	},
+	.capture = {
+		.stream_name = "Capture",
+		.channels_min = 1,
+		.channels_max = 5,
+		.rates = SN95031_RATES,
+		.formats = SN95031_FORMATS,
+	},
 	.ops = &sn95031_headset_dai_ops,
 },
 {	.name = "SN95031 Speaker",
@@ -390,6 +666,8 @@ static int sn95031_codec_probe(struct snd_soc_codec *codec)
 	snd_soc_write(codec, SN95031_PCM2RXSLOT01, 0x10);
 	snd_soc_write(codec, SN95031_PCM2RXSLOT23, 0x32);
 	snd_soc_write(codec, SN95031_PCM2RXSLOT45, 0x54);
+	snd_soc_write(codec, SN95031_PCM2TXSLOT01, 0x10);
+	snd_soc_write(codec, SN95031_PCM2TXSLOT23, 0x32);
 	/* pcm port setting
 	 * This sets the pcm port to slave and clock at 19.2Mhz which
 	 * can support 6slots, sampling rate set per stream in hw-params
@@ -423,6 +701,9 @@ static int sn95031_codec_probe(struct snd_soc_codec *codec)
 	snd_soc_write(codec, SN95031_SSR2, 0x10);
 	snd_soc_write(codec, SN95031_SSR3, 0x40);
 
+	snd_soc_add_controls(codec, sn95031_snd_controls,
+			     ARRAY_SIZE(sn95031_snd_controls));
+
 	ret = snd_soc_dapm_new_controls(&codec->dapm, sn95031_dapm_widgets,
 				ARRAY_SIZE(sn95031_dapm_widgets));
 	if (ret)