[RFC PATCH 27/34] ASoC: sun8i-codec: Add AIF mono/stereo controls

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This allows changing the channel mapping for each digital input/output.
This is useful when the DAI (or the device on the other end of the link)
supports a different number of channels than are desired for routing,
for example when using an I2S-format DAI link with a mono endpoint.

Signed-off-by: Samuel Holland <samuel@xxxxxxxxxxxx>
---
 sound/soc/sunxi/sun8i-codec.c | 160 +++++++++++++++++++++++++++++++---
 1 file changed, 146 insertions(+), 14 deletions(-)

diff --git a/sound/soc/sunxi/sun8i-codec.c b/sound/soc/sunxi/sun8i-codec.c
index 71c4c1f47201..fdb9bf346cc2 100644
--- a/sound/soc/sunxi/sun8i-codec.c
+++ b/sound/soc/sunxi/sun8i-codec.c
@@ -56,9 +56,13 @@
 #define SUN8I_AIF1_ADCDAT_CTRL				0x044
 #define SUN8I_AIF1_ADCDAT_CTRL_AIF1_AD0L_ENA		15
 #define SUN8I_AIF1_ADCDAT_CTRL_AIF1_AD0R_ENA		14
+#define SUN8I_AIF1_ADCDAT_CTRL_AIF1_AD0L_SRC		10
+#define SUN8I_AIF1_ADCDAT_CTRL_AIF1_AD0R_SRC		8
 #define SUN8I_AIF1_DACDAT_CTRL				0x048
 #define SUN8I_AIF1_DACDAT_CTRL_AIF1_DA0L_ENA		15
 #define SUN8I_AIF1_DACDAT_CTRL_AIF1_DA0R_ENA		14
+#define SUN8I_AIF1_DACDAT_CTRL_AIF1_DA0L_SRC		10
+#define SUN8I_AIF1_DACDAT_CTRL_AIF1_DA0R_SRC		8
 #define SUN8I_AIF1_MXR_SRC				0x04c
 #define SUN8I_AIF1_MXR_SRC_AD0L_MXR_SRC_AIF1DA0L	15
 #define SUN8I_AIF1_MXR_SRC_AD0L_MXR_SRC_AIF2DACL	14
@@ -71,9 +75,13 @@
 #define SUN8I_AIF2_ADCDAT_CTRL				0x084
 #define SUN8I_AIF2_ADCDAT_CTRL_AIF2_ADCL_ENA		15
 #define SUN8I_AIF2_ADCDAT_CTRL_AIF2_ADCR_ENA		14
+#define SUN8I_AIF2_ADCDAT_CTRL_AIF2_ADCL_SRC		10
+#define SUN8I_AIF2_ADCDAT_CTRL_AIF2_ADCR_SRC		8
 #define SUN8I_AIF2_DACDAT_CTRL				0x088
 #define SUN8I_AIF2_DACDAT_CTRL_AIF2_DACL_ENA		15
 #define SUN8I_AIF2_DACDAT_CTRL_AIF2_DACR_ENA		14
+#define SUN8I_AIF2_DACDAT_CTRL_AIF2_DACL_SRC		10
+#define SUN8I_AIF2_DACDAT_CTRL_AIF2_DACR_SRC		8
 #define SUN8I_AIF2_MXR_SRC				0x08c
 #define SUN8I_AIF2_MXR_SRC_ADCL_MXR_SRC_AIF1DA0L	15
 #define SUN8I_AIF2_MXR_SRC_ADCL_MXR_SRC_AIF1DA1L	14
@@ -511,6 +519,50 @@ static struct snd_soc_dai_driver sun8i_codec_dais[] = {
 	},
 };
 
+static const char *const sun8i_aif_stereo_mux_enum_names[] = {
+	"Stereo", "Reverse Stereo", "Sum Mono", "Mix Mono"
+};
+
+static SOC_ENUM_DOUBLE_DECL(sun8i_aif1_ad0_stereo_mux_enum,
+			    SUN8I_AIF1_ADCDAT_CTRL,
+			    SUN8I_AIF1_ADCDAT_CTRL_AIF1_AD0L_SRC,
+			    SUN8I_AIF1_ADCDAT_CTRL_AIF1_AD0R_SRC,
+			    sun8i_aif_stereo_mux_enum_names);
+
+static const struct snd_kcontrol_new sun8i_aif1_ad0_stereo_mux_control =
+	SOC_DAPM_ENUM("AIF1 AD0 Stereo Capture Route",
+		      sun8i_aif1_ad0_stereo_mux_enum);
+
+static SOC_ENUM_DOUBLE_DECL(sun8i_aif1_da0_stereo_mux_enum,
+			    SUN8I_AIF1_DACDAT_CTRL,
+			    SUN8I_AIF1_DACDAT_CTRL_AIF1_DA0L_SRC,
+			    SUN8I_AIF1_DACDAT_CTRL_AIF1_DA0R_SRC,
+			    sun8i_aif_stereo_mux_enum_names);
+
+static const struct snd_kcontrol_new sun8i_aif1_da0_stereo_mux_control =
+	SOC_DAPM_ENUM("AIF1 DA0 Stereo Playback Route",
+		      sun8i_aif1_da0_stereo_mux_enum);
+
+static SOC_ENUM_DOUBLE_DECL(sun8i_aif2_adc_stereo_mux_enum,
+			    SUN8I_AIF2_ADCDAT_CTRL,
+			    SUN8I_AIF2_ADCDAT_CTRL_AIF2_ADCL_SRC,
+			    SUN8I_AIF2_ADCDAT_CTRL_AIF2_ADCR_SRC,
+			    sun8i_aif_stereo_mux_enum_names);
+
+static const struct snd_kcontrol_new sun8i_aif2_adc_stereo_mux_control =
+	SOC_DAPM_ENUM("AIF2 ADC Stereo Capture Route",
+		      sun8i_aif2_adc_stereo_mux_enum);
+
+static SOC_ENUM_DOUBLE_DECL(sun8i_aif2_dac_stereo_mux_enum,
+			    SUN8I_AIF2_DACDAT_CTRL,
+			    SUN8I_AIF2_DACDAT_CTRL_AIF2_DACL_SRC,
+			    SUN8I_AIF2_DACDAT_CTRL_AIF2_DACR_SRC,
+			    sun8i_aif_stereo_mux_enum_names);
+
+static const struct snd_kcontrol_new sun8i_aif2_dac_stereo_mux_control =
+	SOC_DAPM_ENUM("AIF2 DAC Stereo Playback Route",
+		      sun8i_aif2_dac_stereo_mux_enum);
+
 static const char *const sun8i_aif3_mux_enum_names[] = {
 	"None", "AIF2 Left", "AIF2 Right"
 };
@@ -609,6 +661,17 @@ static const struct snd_soc_dapm_widget sun8i_codec_dapm_widgets[] = {
 	SND_SOC_DAPM_AIF_OUT("AIF3 ADC", "AIF3 Capture", 0,
 			     SND_SOC_NOPM, 0, 0),
 
+	/* AIF "ADC" Mono/Stereo Muxes */
+	SND_SOC_DAPM_MUX("AIF1 AD0 Left Stereo Mux", SND_SOC_NOPM, 0, 0,
+			 &sun8i_aif1_ad0_stereo_mux_control),
+	SND_SOC_DAPM_MUX("AIF1 AD0 Right Stereo Mux", SND_SOC_NOPM, 0, 0,
+			 &sun8i_aif1_ad0_stereo_mux_control),
+
+	SND_SOC_DAPM_MUX("AIF2 ADC Left Stereo Mux", SND_SOC_NOPM, 0, 0,
+			 &sun8i_aif2_adc_stereo_mux_control),
+	SND_SOC_DAPM_MUX("AIF2 ADC Right Stereo Mux", SND_SOC_NOPM, 0, 0,
+			 &sun8i_aif2_adc_stereo_mux_control),
+
 	/* AIF "ADC" Muxes */
 	SND_SOC_DAPM_MUX("AIF3 ADC Capture Route", SND_SOC_NOPM, 0, 0,
 			 &sun8i_aif3_adc_mux_control),
@@ -630,6 +693,17 @@ static const struct snd_soc_dapm_widget sun8i_codec_dapm_widgets[] = {
 	SND_SOC_DAPM_MUX("AIF2 DAC Right Mux", SND_SOC_NOPM, 0, 0,
 			 &sun8i_aif2_dac_mux_control),
 
+	/* AIF "DAC" Mono/Stereo Muxes */
+	SND_SOC_DAPM_MUX("AIF1 DA0 Left Stereo Mux", SND_SOC_NOPM, 0, 0,
+			 &sun8i_aif1_da0_stereo_mux_control),
+	SND_SOC_DAPM_MUX("AIF1 DA0 Right Stereo Mux", SND_SOC_NOPM, 0, 0,
+			 &sun8i_aif1_da0_stereo_mux_control),
+
+	SND_SOC_DAPM_MUX("AIF2 DAC Left Stereo Mux", SND_SOC_NOPM, 0, 0,
+			 &sun8i_aif2_dac_stereo_mux_control),
+	SND_SOC_DAPM_MUX("AIF2 DAC Right Stereo Mux", SND_SOC_NOPM, 0, 0,
+			 &sun8i_aif2_dac_stereo_mux_control),
+
 	/* AIF "DAC" Inputs */
 	SND_SOC_DAPM_AIF_IN("AIF1 DA0 Left", "AIF1 Playback", 0,
 			    SUN8I_AIF1_DACDAT_CTRL,
@@ -703,52 +777,110 @@ static const struct snd_soc_dapm_widget sun8i_codec_dapm_widgets[] = {
 
 static const struct snd_soc_dapm_route sun8i_codec_dapm_routes[] = {
 	/* AIF "ADC" Output Routes */
-	{ "AIF1 AD0 Left", NULL, "AIF1 AD0 Left Mixer" },
-	{ "AIF1 AD0 Right", NULL, "AIF1 AD0 Right Mixer" },
+	{ "AIF1 AD0 Left", NULL, "AIF1 AD0 Left Stereo Mux" },
+	{ "AIF1 AD0 Right", NULL, "AIF1 AD0 Right Stereo Mux" },
 
 	{ "AIF1 AD0 Left", NULL, "AIF1CLK" },
 	{ "AIF1 AD0 Right", NULL, "AIF1CLK" },
 
-	{ "AIF2 ADC Left", NULL, "AIF2 ADC Left Mixer" },
-	{ "AIF2 ADC Right", NULL, "AIF2 ADC Right Mixer" },
+	{ "AIF2 ADC Left", NULL, "AIF2 ADC Left Stereo Mux" },
+	{ "AIF2 ADC Right", NULL, "AIF2 ADC Right Stereo Mux" },
 
 	{ "AIF2 ADC Left", NULL, "AIF2CLK" },
 	{ "AIF2 ADC Right", NULL, "AIF2CLK" },
 
 	{ "AIF3 ADC", NULL, "AIF3 ADC Capture Route" },
 
+	/* AIF "ADC" Mono/Stereo Mux Routes */
+	{ "AIF1 AD0 Left Stereo Mux", "Stereo", "AIF1 AD0 Left Mixer" },
+	{ "AIF1 AD0 Left Stereo Mux", "Reverse Stereo", "AIF1 AD0 Right Mixer" },
+	{ "AIF1 AD0 Left Stereo Mux", "Sum Mono", "AIF1 AD0 Left Mixer" },
+	{ "AIF1 AD0 Left Stereo Mux", "Sum Mono", "AIF1 AD0 Right Mixer" },
+	{ "AIF1 AD0 Left Stereo Mux", "Mix Mono", "AIF1 AD0 Left Mixer" },
+	{ "AIF1 AD0 Left Stereo Mux", "Mix Mono", "AIF1 AD0 Right Mixer" },
+
+	{ "AIF1 AD0 Right Stereo Mux", "Stereo", "AIF1 AD0 Right Mixer" },
+	{ "AIF1 AD0 Right Stereo Mux", "Reverse Stereo", "AIF1 AD0 Left Mixer" },
+	{ "AIF1 AD0 Right Stereo Mux", "Sum Mono", "AIF1 AD0 Left Mixer" },
+	{ "AIF1 AD0 Right Stereo Mux", "Sum Mono", "AIF1 AD0 Right Mixer" },
+	{ "AIF1 AD0 Right Stereo Mux", "Mix Mono", "AIF1 AD0 Left Mixer" },
+	{ "AIF1 AD0 Right Stereo Mux", "Mix Mono", "AIF1 AD0 Right Mixer" },
+
+	{ "AIF2 ADC Left Stereo Mux", "Stereo", "AIF2 ADC Left Mixer" },
+	{ "AIF2 ADC Left Stereo Mux", "Reverse Stereo", "AIF2 ADC Right Mixer" },
+	{ "AIF2 ADC Left Stereo Mux", "Sum Mono", "AIF2 ADC Left Mixer" },
+	{ "AIF2 ADC Left Stereo Mux", "Sum Mono", "AIF2 ADC Right Mixer" },
+	{ "AIF2 ADC Left Stereo Mux", "Mix Mono", "AIF2 ADC Left Mixer" },
+	{ "AIF2 ADC Left Stereo Mux", "Mix Mono", "AIF2 ADC Right Mixer" },
+
+	{ "AIF2 ADC Right Stereo Mux", "Stereo", "AIF2 ADC Right Mixer" },
+	{ "AIF2 ADC Right Stereo Mux", "Reverse Stereo", "AIF2 ADC Left Mixer" },
+	{ "AIF2 ADC Right Stereo Mux", "Sum Mono", "AIF2 ADC Left Mixer" },
+	{ "AIF2 ADC Right Stereo Mux", "Sum Mono", "AIF2 ADC Right Mixer" },
+	{ "AIF2 ADC Right Stereo Mux", "Mix Mono", "AIF2 ADC Left Mixer" },
+	{ "AIF2 ADC Right Stereo Mux", "Mix Mono", "AIF2 ADC Right Mixer" },
+
 	/* AIF "ADC" Mux Routes */
 	{ "AIF3 ADC Capture Route", "AIF2 Left", "AIF2 ADC Left Mixer" },
 	{ "AIF3 ADC Capture Route", "AIF2 Right", "AIF2 ADC Right Mixer" },
 
 	/* AIF "ADC" Mixer Routes */
-	{ "AIF1 AD0 Left Mixer", "AIF1 AD0 Mixer AIF1 DA0 Capture Switch", "AIF1 DA0 Left" },
+	{ "AIF1 AD0 Left Mixer", "AIF1 AD0 Mixer AIF1 DA0 Capture Switch", "AIF1 DA0 Left Stereo Mux" },
 	{ "AIF1 AD0 Left Mixer", "AIF1 AD0 Mixer AIF2 DAC Capture Switch", "AIF2 DAC Left Mux" },
 	{ "AIF1 AD0 Left Mixer", "AIF1 AD0 Mixer ADC Capture Switch", "ADC Left" },
 	{ "AIF1 AD0 Left Mixer", "AIF1 AD0 Mixer AIF2 DAC Rev Capture Switch", "AIF2 DAC Right Mux" },
 
-	{ "AIF1 AD0 Right Mixer", "AIF1 AD0 Mixer AIF1 DA0 Capture Switch", "AIF1 DA0 Right" },
+	{ "AIF1 AD0 Right Mixer", "AIF1 AD0 Mixer AIF1 DA0 Capture Switch", "AIF1 DA0 Right Stereo Mux" },
 	{ "AIF1 AD0 Right Mixer", "AIF1 AD0 Mixer AIF2 DAC Capture Switch", "AIF2 DAC Right Mux" },
 	{ "AIF1 AD0 Right Mixer", "AIF1 AD0 Mixer ADC Capture Switch", "ADC Right" },
 	{ "AIF1 AD0 Right Mixer", "AIF1 AD0 Mixer AIF2 DAC Rev Capture Switch", "AIF2 DAC Left Mux" },
 
-	{ "AIF2 ADC Left Mixer", "AIF2 ADC Mixer AIF1 DA0 Capture Switch", "AIF1 DA0 Left" },
+	{ "AIF2 ADC Left Mixer", "AIF2 ADC Mixer AIF1 DA0 Capture Switch", "AIF1 DA0 Left Stereo Mux" },
 	{ "AIF2 ADC Left Mixer", "AIF2 ADC Mixer AIF2 DAC Rev Capture Switch", "AIF2 DAC Right Mux" },
 	{ "AIF2 ADC Left Mixer", "AIF2 ADC Mixer ADC Capture Switch", "ADC Left" },
 
-	{ "AIF2 ADC Right Mixer", "AIF2 ADC Mixer AIF1 DA0 Capture Switch", "AIF1 DA0 Right" },
+	{ "AIF2 ADC Right Mixer", "AIF2 ADC Mixer AIF1 DA0 Capture Switch", "AIF1 DA0 Right Stereo Mux" },
 	{ "AIF2 ADC Right Mixer", "AIF2 ADC Mixer AIF2 DAC Rev Capture Switch", "AIF2 DAC Left Mux" },
 	{ "AIF2 ADC Right Mixer", "AIF2 ADC Mixer ADC Capture Switch", "ADC Right" },
 
 	/* AIF "DAC" Mux Routes */
-	{ "AIF2 DAC Left Mux", "None", "AIF2 DAC Left" },
+	{ "AIF2 DAC Left Mux", "None", "AIF2 DAC Left Stereo Mux" },
 	{ "AIF2 DAC Left Mux", "AIF2 Left", "AIF3 DAC" },
-	{ "AIF2 DAC Left Mux", "AIF2 Right", "AIF2 DAC Left" },
+	{ "AIF2 DAC Left Mux", "AIF2 Right", "AIF2 DAC Left Stereo Mux" },
 
-	{ "AIF2 DAC Right Mux", "None", "AIF2 DAC Right" },
-	{ "AIF2 DAC Right Mux", "AIF2 Left", "AIF2 DAC Right" },
+	{ "AIF2 DAC Right Mux", "None", "AIF2 DAC Right Stereo Mux" },
+	{ "AIF2 DAC Right Mux", "AIF2 Left", "AIF2 DAC Right Stereo Mux" },
 	{ "AIF2 DAC Right Mux", "AIF2 Right", "AIF3 DAC" },
 
+	/* AIF "DAC" Mono/Stereo Mux Routes */
+	{ "AIF1 DA0 Left Stereo Mux", "Stereo", "AIF1 DA0 Left" },
+	{ "AIF1 DA0 Left Stereo Mux", "Reverse Stereo", "AIF1 DA0 Right" },
+	{ "AIF1 DA0 Left Stereo Mux", "Sum Mono", "AIF1 DA0 Left" },
+	{ "AIF1 DA0 Left Stereo Mux", "Sum Mono", "AIF1 DA0 Right" },
+	{ "AIF1 DA0 Left Stereo Mux", "Mix Mono", "AIF1 DA0 Left" },
+	{ "AIF1 DA0 Left Stereo Mux", "Mix Mono", "AIF1 DA0 Right" },
+
+	{ "AIF1 DA0 Right Stereo Mux", "Stereo", "AIF1 DA0 Right" },
+	{ "AIF1 DA0 Right Stereo Mux", "Reverse Stereo", "AIF1 DA0 Left" },
+	{ "AIF1 DA0 Right Stereo Mux", "Sum Mono", "AIF1 DA0 Left" },
+	{ "AIF1 DA0 Right Stereo Mux", "Sum Mono", "AIF1 DA0 Right" },
+	{ "AIF1 DA0 Right Stereo Mux", "Mix Mono", "AIF1 DA0 Left" },
+	{ "AIF1 DA0 Right Stereo Mux", "Mix Mono", "AIF1 DA0 Right" },
+
+	{ "AIF2 DAC Left Stereo Mux", "Stereo", "AIF2 DAC Left" },
+	{ "AIF2 DAC Left Stereo Mux", "Reverse Stereo", "AIF2 DAC Right" },
+	{ "AIF2 DAC Left Stereo Mux", "Sum Mono", "AIF2 DAC Left" },
+	{ "AIF2 DAC Left Stereo Mux", "Sum Mono", "AIF2 DAC Right" },
+	{ "AIF2 DAC Left Stereo Mux", "Mix Mono", "AIF2 DAC Left" },
+	{ "AIF2 DAC Left Stereo Mux", "Mix Mono", "AIF2 DAC Right" },
+
+	{ "AIF2 DAC Right Stereo Mux", "Stereo", "AIF2 DAC Right" },
+	{ "AIF2 DAC Right Stereo Mux", "Reverse Stereo", "AIF2 DAC Left" },
+	{ "AIF2 DAC Right Stereo Mux", "Sum Mono", "AIF2 DAC Left" },
+	{ "AIF2 DAC Right Stereo Mux", "Sum Mono", "AIF2 DAC Right" },
+	{ "AIF2 DAC Right Stereo Mux", "Mix Mono", "AIF2 DAC Left" },
+	{ "AIF2 DAC Right Stereo Mux", "Mix Mono", "AIF2 DAC Right" },
+
 	/* AIF "DAC" Input Routes */
 	{ "AIF1 DA0 Left", NULL, "AIF1CLK" },
 	{ "AIF1 DA0 Right", NULL, "AIF1CLK" },
@@ -764,11 +896,11 @@ static const struct snd_soc_dapm_route sun8i_codec_dapm_routes[] = {
 	{ "DAC Right", NULL, "DAC" },
 
 	/* Main DAC Mixer Routes */
-	{ "DAC Left Mixer", "DAC Mixer AIF1 DA0 Playback Switch", "AIF1 DA0 Left" },
+	{ "DAC Left Mixer", "DAC Mixer AIF1 DA0 Playback Switch", "AIF1 DA0 Left Stereo Mux" },
 	{ "DAC Left Mixer", "DAC Mixer AIF2 DAC Playback Switch", "AIF2 DAC Left Mux" },
 	{ "DAC Left Mixer", "DAC Mixer ADC Playback Switch", "ADC Left" },
 
-	{ "DAC Right Mixer", "DAC Mixer AIF1 DA0 Playback Switch", "AIF1 DA0 Right" },
+	{ "DAC Right Mixer", "DAC Mixer AIF1 DA0 Playback Switch", "AIF1 DA0 Right Stereo Mux" },
 	{ "DAC Right Mixer", "DAC Mixer AIF2 DAC Playback Switch", "AIF2 DAC Right Mux" },
 	{ "DAC Right Mixer", "DAC Mixer ADC Playback Switch", "ADC Right" },
 
-- 
2.24.1

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