Adds support for some mixer controls to sun4i-codec:
 - Line-In
 - FM-In
 - Mic 2
 - Capture Source
 - Differential Line-In

It also adds a mux for the capture source and the PGA for the MIC2 preamp.

Where possible, it uses SOC_DAPM_DOUBLE in order to cut down on the number
of distinct controls in alsamixer.

Signed-off-by: Danny Milosavljevic <[email protected]>
---
 sound/soc/sunxi/sun4i-codec.c | 296 ++++++++++++++++++++++++++++++++++++++----
 1 file changed, 269 insertions(+), 27 deletions(-)

diff --git a/sound/soc/sunxi/sun4i-codec.c b/sound/soc/sunxi/sun4i-codec.c
index 1500699..6b8a543 100644
--- a/sound/soc/sunxi/sun4i-codec.c
+++ b/sound/soc/sunxi/sun4i-codec.c
@@ -64,9 +64,20 @@
 #define SUN4I_CODEC_DAC_ACTL_DACAENR                   (31)
 #define SUN4I_CODEC_DAC_ACTL_DACAENL                   (30)
 #define SUN4I_CODEC_DAC_ACTL_MIXEN                     (29)
+#define SUN4I_CODEC_DAC_ACTL_LNG                       (26)
+#define SUN4I_CODEC_DAC_ACTL_FMG                       (23)
+#define SUN4I_CODEC_DAC_ACTL_MICG                      (20)
+#define SUN4I_CODEC_DAC_ACTL_LLNS                      (19)
+#define SUN4I_CODEC_DAC_ACTL_RLNS                      (18)
+#define SUN4I_CODEC_DAC_ACTL_LFMS                      (17)
+#define SUN4I_CODEC_DAC_ACTL_RFMS                      (16)
 #define SUN4I_CODEC_DAC_ACTL_LDACLMIXS                 (15)
 #define SUN4I_CODEC_DAC_ACTL_RDACRMIXS                 (14)
 #define SUN4I_CODEC_DAC_ACTL_LDACRMIXS                 (13)
+#define SUN4I_CODEC_DAC_ACTL_MIC1LS                    (12)
+#define SUN4I_CODEC_DAC_ACTL_MIC1RS                    (11)
+#define SUN4I_CODEC_DAC_ACTL_MIC2LS                    (10)
+#define SUN4I_CODEC_DAC_ACTL_MIC2RS                    (9)
 #define SUN4I_CODEC_DAC_ACTL_DACPAS                    (8)
 #define SUN4I_CODEC_DAC_ACTL_MIXPAS                    (7)
 #define SUN4I_CODEC_DAC_ACTL_PA_MUTE                   (6)
@@ -94,8 +105,12 @@
 #define SUN4I_CODEC_ADC_ACTL_PREG1EN                   (29)
 #define SUN4I_CODEC_ADC_ACTL_PREG2EN                   (28)
 #define SUN4I_CODEC_ADC_ACTL_VMICEN                    (27)
-#define SUN4I_CODEC_ADC_ACTL_VADCG                     (20)
+#define SUN4I_CODEC_ADC_ACTL_PREG1                     (25)
+#define SUN4I_CODEC_ADC_ACTL_PREG2                     (23)
+#define SUN4I_CODEC_ADC_ACTL_ADCG                      (20)
 #define SUN4I_CODEC_ADC_ACTL_ADCIS                     (17)
+#define SUN4I_CODEC_ADC_ACTL_LNRDF                     (16)
+#define SUN4I_CODEC_ADC_ACTL_LNPREG                    (13)
 #define SUN4I_CODEC_ADC_ACTL_PA_EN                     (4)
 #define SUN4I_CODEC_ADC_ACTL_DDE                       (3)
 #define SUN4I_CODEC_ADC_DEBUG                  (0x2c)
@@ -110,6 +125,9 @@
 /* Microphone controls (sun7i only) */
 #define SUN7I_CODEC_AC_MIC_PHONE_CAL           (0x3c)
 
+#define SUN7I_CODEC_AC_MIC_PHONE_CAL_PREG1      (29)
+#define SUN7I_CODEC_AC_MIC_PHONE_CAL_PREG2      (26)
+
 /*
  * sun6i specific registers
  *
@@ -643,22 +661,157 @@ static const struct snd_kcontrol_new sun4i_codec_pa_mute 
=
                        SUN4I_CODEC_DAC_ACTL_PA_MUTE, 1, 0);
 
 static DECLARE_TLV_DB_SCALE(sun4i_codec_pa_volume_scale, -6300, 100, 1);
+static DECLARE_TLV_DB_SCALE(sun4i_codec_linein_loopback_gain_scale,
+                           -150,
+                           150,
+                           0);
+static DECLARE_TLV_DB_SCALE(sun4i_codec_linein_preamp_gain_scale,
+                           -1200,
+                           300,
+                           0);
+static DECLARE_TLV_DB_SCALE(sun4i_codec_fmin_loopback_gain_scale,
+                           -450,
+                           150,
+                           0);
+static DECLARE_TLV_DB_SCALE(sun4i_codec_micin_loopback_gain_scale,
+                           -450,
+                           150,
+                           0);
+static DECLARE_TLV_DB_RANGE(sun4i_codec_micin_preamp_gain_scale,
+                           0, 0, TLV_DB_SCALE_ITEM(0, 0, 0),
+                           1, 7, TLV_DB_SCALE_ITEM(3500, 300, 0));
+static DECLARE_TLV_DB_SCALE(sun4i_codec_adc_gain_scale, -450, 150, 0);
+static DECLARE_TLV_DB_RANGE(sun7i_codec_micin_preamp_gain_scale,
+       0, 0, TLV_DB_SCALE_ITEM(0, 0, 0),
+       1, 7, TLV_DB_SCALE_ITEM(2400, 300, 0)
+);
+
+static const char * const sun4i_codec_capture_source[] = {
+       "Line",
+       "FM",
+       "Mic1",
+       "Mic2",
+       "Mic1,Mic2",
+       "Mic1+Mic2",
+       "Output Mixer",
+       "Line,Mic1",
+};
+
+static SOC_ENUM_SINGLE_DECL(sun4i_codec_enum_capture_source,
+                           SUN4I_CODEC_ADC_ACTL,
+                           SUN4I_CODEC_ADC_ACTL_ADCIS,
+                           sun4i_codec_capture_source);
+
+static const struct snd_kcontrol_new sun4i_codec_capture_source_controls =
+       SOC_DAPM_ENUM("Capture Source", sun4i_codec_enum_capture_source);
+
+static const char * const sun4i_codec_difflinein_capture_source[] = {
+       "Non-Differential",
+       "Differential",
+};
+static SOC_ENUM_SINGLE_DECL(sun4i_codec_enum_difflinein_capture_source,
+                           SUN4I_CODEC_ADC_ACTL,
+                           SUN4I_CODEC_ADC_ACTL_ADCIS,
+                           sun4i_codec_difflinein_capture_source);
+
+static const struct snd_kcontrol_new 
sun4i_codec_difflinein_capture_source_controls =
+       SOC_DAPM_ENUM("Differential Line Capture Switch",
+       sun4i_codec_enum_difflinein_capture_source);
 
 static const struct snd_kcontrol_new sun4i_codec_controls[] = {
        SOC_SINGLE_TLV("Power Amplifier Volume", SUN4I_CODEC_DAC_ACTL,
                       SUN4I_CODEC_DAC_ACTL_PA_VOL, 0x3F, 0,
                       sun4i_codec_pa_volume_scale),
+       SOC_SINGLE_TLV("Headphone Playback Volume", SUN4I_CODEC_DAC_ACTL,
+                      SUN4I_CODEC_DAC_ACTL_PA_VOL, 0x3F, 0,
+                      sun4i_codec_pa_volume_scale),
+       /* Line, FM, Mic1, Mic2 */
+       SOC_SINGLE_TLV("Line Playback Volume",
+                      SUN4I_CODEC_DAC_ACTL,
+                      SUN4I_CODEC_DAC_ACTL_LNG,
+                      1,
+                      0,
+                      sun4i_codec_linein_loopback_gain_scale),
+       SOC_SINGLE_TLV("FM Playback Volume",
+                      SUN4I_CODEC_DAC_ACTL,
+                      SUN4I_CODEC_DAC_ACTL_FMG,
+                      3,
+                      0,
+                      sun4i_codec_fmin_loopback_gain_scale),
+       SOC_SINGLE_TLV("Mic Playback Volume",
+                      SUN4I_CODEC_DAC_ACTL,
+                      SUN4I_CODEC_DAC_ACTL_MICG,
+                      7,
+                      0,
+                      sun4i_codec_micin_loopback_gain_scale),
+       /* ADC */
+       SOC_SINGLE_TLV("Capture Volume",
+                      SUN4I_CODEC_ADC_ACTL,
+                      SUN4I_CODEC_ADC_ACTL_ADCG,
+                      4,
+                      0,
+                      sun4i_codec_adc_gain_scale),
+       SOC_SINGLE_TLV("Line Capture Volume",
+                      SUN4I_CODEC_ADC_ACTL,
+                      SUN4I_CODEC_ADC_ACTL_LNPREG,
+                      7,
+                      0,
+                      sun4i_codec_linein_preamp_gain_scale),
+};
+
+static const struct snd_kcontrol_new sun4i_codec_extra_controls[] = {
+       SOC_SINGLE_TLV("Mic1 Capture Volume",
+                      SUN4I_CODEC_ADC_ACTL,
+                      SUN4I_CODEC_ADC_ACTL_PREG1,
+                      3,
+                      0,
+                      sun4i_codec_micin_preamp_gain_scale),
+       SOC_SINGLE_TLV("Mic2 Capture Volume",
+                      SUN4I_CODEC_ADC_ACTL,
+                      SUN4I_CODEC_ADC_ACTL_PREG2,
+                      3,
+                      0,
+                      sun4i_codec_micin_preamp_gain_scale),
 };
 
-static const struct snd_kcontrol_new sun4i_codec_left_mixer_controls[] = {
-       SOC_DAPM_SINGLE("Left DAC Playback Switch", SUN4I_CODEC_DAC_ACTL,
-                       SUN4I_CODEC_DAC_ACTL_LDACLMIXS, 1, 0),
+static const struct snd_kcontrol_new sun7i_codec_extra_controls[] = {
+       SOC_SINGLE_TLV("Mic1 Capture Volume",
+                      SUN7I_CODEC_AC_MIC_PHONE_CAL,
+                      SUN7I_CODEC_AC_MIC_PHONE_CAL_PREG1,
+                      7,
+                      0,
+                      sun7i_codec_micin_preamp_gain_scale),
+       SOC_SINGLE_TLV("Mic2 Capture Volume",
+                      SUN7I_CODEC_AC_MIC_PHONE_CAL,
+                      SUN7I_CODEC_AC_MIC_PHONE_CAL_PREG2,
+                      7,
+                      0,
+                      sun7i_codec_micin_preamp_gain_scale),
 };
 
-static const struct snd_kcontrol_new sun4i_codec_right_mixer_controls[] = {
-       SOC_DAPM_SINGLE("Right DAC Playback Switch", SUN4I_CODEC_DAC_ACTL,
+static const struct snd_kcontrol_new sun4i_codec_mixer_controls[] = {
+       SOC_DAPM_DOUBLE("DAC Playback Switch",
+                       SUN4I_CODEC_DAC_ACTL,
+                       SUN4I_CODEC_DAC_ACTL_LDACLMIXS,
                        SUN4I_CODEC_DAC_ACTL_RDACRMIXS, 1, 0),
-       SOC_DAPM_SINGLE("Left DAC Playback Switch", SUN4I_CODEC_DAC_ACTL,
+       SOC_DAPM_DOUBLE("Line Playback Switch",
+                       SUN4I_CODEC_DAC_ACTL,
+                       SUN4I_CODEC_DAC_ACTL_LLNS,
+                       SUN4I_CODEC_DAC_ACTL_RLNS, 1, 0),
+       SOC_DAPM_DOUBLE("FM Playback Switch",
+                       SUN4I_CODEC_DAC_ACTL,
+                       SUN4I_CODEC_DAC_ACTL_LFMS,
+                       SUN4I_CODEC_DAC_ACTL_RFMS, 1, 0),
+       SOC_DAPM_DOUBLE("Mic1 Playback Switch",
+                       SUN4I_CODEC_DAC_ACTL,
+                       SUN4I_CODEC_DAC_ACTL_MIC1LS,
+                       SUN4I_CODEC_DAC_ACTL_MIC1RS, 1, 0),
+       SOC_DAPM_DOUBLE("Mic2 Playback Switch",
+                       SUN4I_CODEC_DAC_ACTL,
+                       SUN4I_CODEC_DAC_ACTL_MIC2LS,
+                       SUN4I_CODEC_DAC_ACTL_MIC2RS, 1, 0),
+       /* Right Mixer: */
+       SOC_DAPM_SINGLE("Right Mixer Left DAC Playback Switch", 
SUN4I_CODEC_DAC_ACTL,
                        SUN4I_CODEC_DAC_ACTL_LDACRMIXS, 1, 0),
 };
 
@@ -694,11 +847,11 @@ static const struct snd_soc_dapm_widget 
sun4i_codec_codec_dapm_widgets[] = {
 
        /* Mixers */
        SND_SOC_DAPM_MIXER("Left Mixer", SND_SOC_NOPM, 0, 0,
-                          sun4i_codec_left_mixer_controls,
-                          ARRAY_SIZE(sun4i_codec_left_mixer_controls)),
+                          sun4i_codec_mixer_controls,
+                          ARRAY_SIZE(sun4i_codec_mixer_controls)),
        SND_SOC_DAPM_MIXER("Right Mixer", SND_SOC_NOPM, 0, 0,
-                          sun4i_codec_right_mixer_controls,
-                          ARRAY_SIZE(sun4i_codec_right_mixer_controls)),
+                          sun4i_codec_mixer_controls,
+                          ARRAY_SIZE(sun4i_codec_mixer_controls)),
 
        /* Global Mixer Enable */
        SND_SOC_DAPM_SUPPLY("Mixer Enable", SUN4I_CODEC_DAC_ACTL,
@@ -712,6 +865,9 @@ static const struct snd_soc_dapm_widget 
sun4i_codec_codec_dapm_widgets[] = {
        SND_SOC_DAPM_PGA("MIC1 Pre-Amplifier", SUN4I_CODEC_ADC_ACTL,
                         SUN4I_CODEC_ADC_ACTL_PREG1EN, 0, NULL, 0),
 
+       SND_SOC_DAPM_PGA("MIC2 Pre-Amplifier", SUN4I_CODEC_ADC_ACTL,
+                        SUN4I_CODEC_ADC_ACTL_PREG2EN, 0, NULL, 0),
+
        /* Power Amplifier */
        SND_SOC_DAPM_MIXER("Power Amplifier", SUN4I_CODEC_ADC_ACTL,
                           SUN4I_CODEC_ADC_ACTL_PA_EN, 0,
@@ -720,8 +876,25 @@ static const struct snd_soc_dapm_widget 
sun4i_codec_codec_dapm_widgets[] = {
        SND_SOC_DAPM_SWITCH("Power Amplifier Mute", SND_SOC_NOPM, 0, 0,
                            &sun4i_codec_pa_mute),
 
+       /* MUX */
+       SND_SOC_DAPM_MUX("Left Capture Select", SND_SOC_NOPM, 0, 0,
+                        &sun4i_codec_capture_source_controls),
+       SND_SOC_DAPM_MUX("Right Capture Select", SND_SOC_NOPM, 0, 0,
+                        &sun4i_codec_capture_source_controls),
+       SND_SOC_DAPM_MUX("Differential Line Capture Switch", SND_SOC_NOPM,
+                        0,
+                        0,
+                        &sun4i_codec_difflinein_capture_source_controls),
+
+       /* Inputs */
        SND_SOC_DAPM_INPUT("Mic1"),
+       SND_SOC_DAPM_INPUT("Mic2"),
+       SND_SOC_DAPM_INPUT("Line Right"),
+       SND_SOC_DAPM_INPUT("Line Left"),
+       SND_SOC_DAPM_INPUT("FM Right"),
+       SND_SOC_DAPM_INPUT("FM Left"),
 
+       /* Outputs */
        SND_SOC_DAPM_OUTPUT("HP Right"),
        SND_SOC_DAPM_OUTPUT("HP Left"),
 };
@@ -735,14 +908,22 @@ static const struct snd_soc_dapm_route 
sun4i_codec_codec_dapm_routes[] = {
        { "Right ADC", NULL, "ADC" },
        { "Right DAC", NULL, "DAC" },
 
-       /* Right Mixer Routes */
-       { "Right Mixer", NULL, "Mixer Enable" },
-       { "Right Mixer", "Left DAC Playback Switch", "Left DAC" },
-       { "Right Mixer", "Right DAC Playback Switch", "Right DAC" },
-
        /* Left Mixer Routes */
        { "Left Mixer", NULL, "Mixer Enable" },
-       { "Left Mixer", "Left DAC Playback Switch", "Left DAC" },
+       { "Left Mixer", "DAC Playback Switch", "Left DAC" },
+       { "Left Mixer", "Mic1 Playback Switch", "MIC1 Pre-Amplifier" },
+       { "Left Mixer", "Mic2 Playback Switch", "MIC2 Pre-Amplifier" },
+       { "Left Mixer", "Line Playback Switch", "Line Left" },
+       { "Left Mixer", "FM Playback Switch", "FM Left" },
+
+       /* Right Mixer Routes */
+       { "Right Mixer", NULL, "Mixer Enable" },
+       { "Right Mixer", "Right Mixer Left DAC Playback Switch", "Left DAC" },
+       { "Right Mixer", "DAC Playback Switch", "Right DAC" },
+       { "Right Mixer", "Mic1 Playback Switch", "MIC1 Pre-Amplifier" },
+       { "Right Mixer", "Mic2 Playback Switch", "MIC2 Pre-Amplifier" },
+       { "Right Mixer", "Line Playback Switch", "Line Right" },
+       { "Right Mixer", "FM Playback Switch", "FM Right" },
 
        /* Power Amplifier Routes */
        { "Power Amplifier", "Mixer Playback Switch", "Left Mixer" },
@@ -760,9 +941,76 @@ static const struct snd_soc_dapm_route 
sun4i_codec_codec_dapm_routes[] = {
        { "Right ADC", NULL, "MIC1 Pre-Amplifier" },
        { "MIC1 Pre-Amplifier", NULL, "Mic1"},
        { "Mic1", NULL, "VMIC" },
+
+       /* see also Left Mixer Routes, Right Mixer Routes */
+
+       /* Mic2 Routes */
+       { "Left ADC", NULL, "MIC2 Pre-Amplifier" },
+       { "Right ADC", NULL, "MIC2 Pre-Amplifier" },
+       { "MIC2 Pre-Amplifier", NULL, "Mic2"},
+       { "Mic2", NULL, "VMIC" },
+       /* see also Left Mixer Routes, Right Mixer Routes */
+
+       /* Line, FM Routes */
+       /* see also Left Mixer Routes, Right Mixer Routes */
+
+       /* LNRDF Routes */
+       { "Differential Line Capture Switch", "Differential", "Line Left" },
+       { "Differential Line Capture Switch", "Differential", "Line Right" },
+       /*{ "Differential Line Capture Switch", "Non-Differential", "Line X" }, 
implicit */
+
+       /* Left ADC Input Routes */
+       { "Left Capture Select", "Line", "Line Left" },
+       { "Left Capture Select", "Line", "Differential Line Capture Switch" },
+       { "Left Capture Select", "FM", "FM Left" },
+       { "Left Capture Select", "Mic1", "MIC1 Pre-Amplifier" },
+       { "Left Capture Select", "Mic2", "MIC2 Pre-Amplifier" },
+       { "Left Capture Select", "Mic1,Mic2", "MIC1 Pre-Amplifier" },
+       { "Left Capture Select", "Mic1+Mic2", "MIC1 Pre-Amplifier" },
+       { "Left Capture Select", "Mic1+Mic2", "MIC2 Pre-Amplifier" },
+       { "Left Capture Select", "Output Mixer", "Left Mixer" },
+       { "Left Capture Select", "Line,Mic1", "Line Left" },
+       { "Left Capture Select", "Line,Mic1", "Differential Line Capture 
Switch" },
+       { "Left ADC", NULL, "Left Capture Select" },
+
+       /* Right ADC Input Routes */
+       { "Right Capture Select", "Line", "Line Right" },
+       { "Right Capture Select", "Line", "Differential Line Capture Switch" },
+       { "Right Capture Select", "FM", "FM Right" },
+       { "Right Capture Select", "Mic1", "MIC1 Pre-Amplifier" },
+       { "Right Capture Select", "Mic2", "MIC2 Pre-Amplifier" },
+       { "Right Capture Select", "Mic1,Mic2", "MIC2 Pre-Amplifier" },
+       { "Right Capture Select", "Mic1+Mic2", "MIC2 Pre-Amplifier" },
+       { "Right Capture Select", "Mic1+Mic2", "MIC1 Pre-Amplifier" },
+       { "Right Capture Select", "Output Mixer", "Right Mixer" },
+       { "Right Capture Select", "Line,Mic1", "MIC1 Pre-Amplifier" },
+       { "Right ADC", NULL, "Right Capture Select" },
 };
 
+struct sun4i_codec_quirks {
+       const struct regmap_config *regmap_config;
+       const struct snd_soc_codec_driver *codec;
+       struct snd_soc_card * (*create_card)(struct device *dev);
+       struct reg_field reg_adc_fifoc; /* used for regmap_field */
+       unsigned int reg_dac_txdata;    /* TX FIFO offset for DMA config */
+       unsigned int reg_adc_rxdata;    /* RX FIFO offset for DMA config */
+       bool has_reset;
+       const struct snd_kcontrol_new *controls;
+       unsigned int num_controls;
+};
+
+static int sun4i_codec_codec_probe(struct snd_soc_codec *scodec)
+{
+       const struct sun4i_codec_quirks *quirks;
+
+       quirks = of_device_get_match_data(scodec->dev);
+       return snd_soc_add_codec_controls(scodec,
+                                         quirks->controls,
+                                         quirks->num_controls);
+}
+
 static struct snd_soc_codec_driver sun4i_codec_codec = {
+       .probe = sun4i_codec_codec_probe,
        .component_driver = {
                .controls               = sun4i_codec_controls,
                .num_controls           = ARRAY_SIZE(sun4i_codec_controls),
@@ -1419,16 +1667,6 @@ static const struct regmap_config 
sun8i_v3s_codec_regmap_config = {
        .max_register   = SUN8I_H3_CODEC_ADC_DBG,
 };
 
-struct sun4i_codec_quirks {
-       const struct regmap_config *regmap_config;
-       const struct snd_soc_codec_driver *codec;
-       struct snd_soc_card * (*create_card)(struct device *dev);
-       struct reg_field reg_adc_fifoc; /* used for regmap_field */
-       unsigned int reg_dac_txdata;    /* TX FIFO offset for DMA config */
-       unsigned int reg_adc_rxdata;    /* RX FIFO offset for DMA config */
-       bool has_reset;
-};
-
 static const struct sun4i_codec_quirks sun4i_codec_quirks = {
        .regmap_config  = &sun4i_codec_regmap_config,
        .codec          = &sun4i_codec_codec,
@@ -1436,6 +1674,8 @@ static const struct sun4i_codec_quirks sun4i_codec_quirks 
= {
        .reg_adc_fifoc  = REG_FIELD(SUN4I_CODEC_ADC_FIFOC, 0, 31),
        .reg_dac_txdata = SUN4I_CODEC_DAC_TXDATA,
        .reg_adc_rxdata = SUN4I_CODEC_ADC_RXDATA,
+       .controls = sun4i_codec_extra_controls,
+       .num_controls = ARRAY_SIZE(sun4i_codec_extra_controls),
 };
 
 static const struct sun4i_codec_quirks sun6i_a31_codec_quirks = {
@@ -1455,6 +1695,8 @@ static const struct sun4i_codec_quirks sun7i_codec_quirks 
= {
        .reg_adc_fifoc  = REG_FIELD(SUN4I_CODEC_ADC_FIFOC, 0, 31),
        .reg_dac_txdata = SUN4I_CODEC_DAC_TXDATA,
        .reg_adc_rxdata = SUN4I_CODEC_ADC_RXDATA,
+       .controls = sun7i_codec_extra_controls,
+       .num_controls = ARRAY_SIZE(sun7i_codec_extra_controls),
 };
 
 static const struct sun4i_codec_quirks sun8i_a23_codec_quirks = {
-- 
2.1.4

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