ASoC: sun8i-codec-analog: prepare a mixer control/widget/route set for V3s

Allwinner V3s has an analog codec without MIC2 and Line In, which will
need a special set of mixer controls/widgets/routes, otherwise meaningless
controls will be exported to userspace and confuse the user.

Add the special set, and use it when the SoC has no MIC2 and Line In.

Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Mark Brown <broonie@kernel.org>

1 files changed, 100 insertions, 1 deletions

diff --git a/sound/soc/sunxi/sun8i-codec-analog.c b/sound/soc/sunxi/sun8i-codec-analog.c
index edcc3eb7cd9a..29c446068151 100644
--- a/sound/soc/sunxi/sun8i-codec-analog.c
+++ b/sound/soc/sunxi/sun8i-codec-analog.c
@@ -219,6 +219,22 @@ static const struct snd_kcontrol_new sun8i_codec_mixer_controls[] = {
                           SUN8I_ADDA_LOMIXSC_MIC2, 1, 0),
 };
 
+/* mixer controls */
+static const struct snd_kcontrol_new sun8i_v3s_codec_mixer_controls[] = {
+        SOC_DAPM_DOUBLE_R("DAC Playback Switch",
+                          SUN8I_ADDA_LOMIXSC,
+                          SUN8I_ADDA_ROMIXSC,
+                          SUN8I_ADDA_LOMIXSC_DACL, 1, 0),
+        SOC_DAPM_DOUBLE_R("DAC Reversed Playback Switch",
+                          SUN8I_ADDA_LOMIXSC,
+                          SUN8I_ADDA_ROMIXSC,
+                          SUN8I_ADDA_LOMIXSC_DACR, 1, 0),
+        SOC_DAPM_DOUBLE_R("Mic1 Playback Switch",
+                          SUN8I_ADDA_LOMIXSC,
+                          SUN8I_ADDA_ROMIXSC,
+                          SUN8I_ADDA_LOMIXSC_MIC1, 1, 0),
+};
+
 /* ADC mixer controls */
 static const struct snd_kcontrol_new sun8i_codec_adc_mixer_controls[] = {
         SOC_DAPM_DOUBLE_R("Mixer Capture Switch",
@@ -243,6 +259,22 @@ static const struct snd_kcontrol_new sun8i_codec_adc_mixer_controls[] = {
                           SUN8I_ADDA_LADCMIXSC_MIC2, 1, 0),
 };
 
+/* ADC mixer controls */
+static const struct snd_kcontrol_new sun8i_v3s_codec_adc_mixer_controls[] = {
+        SOC_DAPM_DOUBLE_R("Mixer Capture Switch",
+                          SUN8I_ADDA_LADCMIXSC,
+                          SUN8I_ADDA_RADCMIXSC,
+                          SUN8I_ADDA_LADCMIXSC_OMIXRL, 1, 0),
+        SOC_DAPM_DOUBLE_R("Mixer Reversed Capture Switch",
+                          SUN8I_ADDA_LADCMIXSC,
+                          SUN8I_ADDA_RADCMIXSC,
+                          SUN8I_ADDA_LADCMIXSC_OMIXRR, 1, 0),
+        SOC_DAPM_DOUBLE_R("Mic1 Capture Switch",
+                          SUN8I_ADDA_LADCMIXSC,
+                          SUN8I_ADDA_RADCMIXSC,
+                          SUN8I_ADDA_LADCMIXSC_MIC1, 1, 0),
+};
+
 /* volume / mute controls */
 static const DECLARE_TLV_DB_SCALE(sun8i_codec_out_mixer_pregain_scale,
                                   -450, 150, 0);
@@ -292,8 +324,9 @@ static const struct snd_soc_dapm_widget sun8i_codec_common_widgets[] = {
         /* Mic input path */
         SND_SOC_DAPM_PGA("Mic1 Amplifier", SUN8I_ADDA_MIC1G_MICBIAS_CTRL,
                          SUN8I_ADDA_MIC1G_MICBIAS_CTRL_MIC1AMPEN, 0, NULL, 0),
+};
 
-        /* Mixers */
+static const struct snd_soc_dapm_widget sun8i_codec_mixer_widgets[] = {
         SND_SOC_DAPM_MIXER("Left Mixer", SUN8I_ADDA_DAC_PA_SRC,
                            SUN8I_ADDA_DAC_PA_SRC_LMIXEN, 0,
                            sun8i_codec_mixer_controls,
@@ -312,10 +345,31 @@ static const struct snd_soc_dapm_widget sun8i_codec_common_widgets[] = {
                            ARRAY_SIZE(sun8i_codec_adc_mixer_controls)),
 };
 
+static const struct snd_soc_dapm_widget sun8i_v3s_codec_mixer_widgets[] = {
+        SND_SOC_DAPM_MIXER("Left Mixer", SUN8I_ADDA_DAC_PA_SRC,
+                           SUN8I_ADDA_DAC_PA_SRC_LMIXEN, 0,
+                           sun8i_v3s_codec_mixer_controls,
+                           ARRAY_SIZE(sun8i_v3s_codec_mixer_controls)),
+        SND_SOC_DAPM_MIXER("Right Mixer", SUN8I_ADDA_DAC_PA_SRC,
+                           SUN8I_ADDA_DAC_PA_SRC_RMIXEN, 0,
+                           sun8i_v3s_codec_mixer_controls,
+                           ARRAY_SIZE(sun8i_v3s_codec_mixer_controls)),
+        SND_SOC_DAPM_MIXER("Left ADC Mixer", SUN8I_ADDA_ADC_AP_EN,
+                           SUN8I_ADDA_ADC_AP_EN_ADCLEN, 0,
+                           sun8i_v3s_codec_adc_mixer_controls,
+                           ARRAY_SIZE(sun8i_v3s_codec_adc_mixer_controls)),
+        SND_SOC_DAPM_MIXER("Right ADC Mixer", SUN8I_ADDA_ADC_AP_EN,
+                           SUN8I_ADDA_ADC_AP_EN_ADCREN, 0,
+                           sun8i_v3s_codec_adc_mixer_controls,
+                           ARRAY_SIZE(sun8i_v3s_codec_adc_mixer_controls)),
+};
+
 static const struct snd_soc_dapm_route sun8i_codec_common_routes[] = {
         /* Microphone Routes */
         { "Mic1 Amplifier", NULL, "MIC1"},
+};
 
+static const struct snd_soc_dapm_route sun8i_codec_mixer_routes[] = {
         /* Left Mixer Routes */
         { "Left Mixer", "DAC Playback Switch", "Left DAC" },
         { "Left Mixer", "DAC Reversed Playback Switch", "Right DAC" },
@@ -714,6 +768,48 @@ static const struct sun8i_codec_analog_quirks sun8i_h3_quirks = {
         .has_mic2       = true,
 };
 
+static int sun8i_codec_analog_add_mixer(struct snd_soc_component *cmpnt,
+                                        const struct sun8i_codec_analog_quirks *quirks)
+{
+        struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(cmpnt);
+        struct device *dev = cmpnt->dev;
+        int ret;
+
+        if (!quirks->has_mic2 && !quirks->has_linein) {
+                /*
+                 * Apply the special widget set which has uses a control
+                 * without MIC2 and Line In, for SoCs without these.
+                 * TODO: not all special cases are supported now, this case
+                 * is present because it's the case of V3s.
+                 */
+                ret = snd_soc_dapm_new_controls(dapm,
+                                                sun8i_v3s_codec_mixer_widgets,
+                                                ARRAY_SIZE(sun8i_v3s_codec_mixer_widgets));
+                if (ret) {
+                        dev_err(dev, "Failed to add V3s Mixer DAPM widgets: %d\n", ret);
+                        return ret;
+                }
+        } else {
+                /* Apply the generic mixer widget set. */
+                ret = snd_soc_dapm_new_controls(dapm,
+                                                sun8i_codec_mixer_widgets,
+                                                ARRAY_SIZE(sun8i_codec_mixer_widgets));
+                if (ret) {
+                        dev_err(dev, "Failed to add Mixer DAPM widgets: %d\n", ret);
+                        return ret;
+                }
+        }
+
+        ret = snd_soc_dapm_add_routes(dapm, sun8i_codec_mixer_routes,
+                                      ARRAY_SIZE(sun8i_codec_mixer_routes));
+        if (ret) {
+                dev_err(dev, "Failed to add Mixer DAPM routes: %d\n", ret);
+                return ret;
+        }
+
+        return 0;
+}
+
 static int sun8i_codec_analog_cmpnt_probe(struct snd_soc_component *cmpnt)
 {
         struct device *dev = cmpnt->dev;
@@ -728,6 +824,9 @@ static int sun8i_codec_analog_cmpnt_probe(struct snd_soc_component *cmpnt)
         quirks = of_device_get_match_data(dev);
 
         /* Add controls, widgets, and routes for individual features */
+        ret = sun8i_codec_analog_add_mixer(cmpnt, quirks);
+        if (ret)
+                return ret;
 
         if (quirks->has_headphone) {
                 ret = sun8i_codec_add_headphone(cmpnt);