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: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Harsha Priya <priya.harsha@intel.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

1 files changed, 281 insertions, 0 deletions

diff --git a/sound/soc/codecs/sn95031.c b/sound/soc/codecs/sn95031.c
index 593632cf791d..40e285df9ae5 100644
--- a/sound/soc/codecs/sn95031.c
+++ b/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)