ASoC: madera: Update handling of DAPM routes for mono muxed outputs

Correctly link both channels on the DAC if an output muxed between a
stereo and mono output. Without this one channel of the DAC may be
erroneously powered down whilst in mono mode.
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20200114161841.451-4-ckeepax@opensource.cirrus.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/cs47l15.c

@@ -529,6 +529,7 @@ SND_SOC_DAPM_OUTPUT("DRC2 Signal Activity"),
 SND_SOC_DAPM_OUTPUT("DSP Trigger Out"),
 
 SND_SOC_DAPM_DEMUX("HPOUT1 Demux", SND_SOC_NOPM, 0, 0, &cs47l15_outdemux),
+SND_SOC_DAPM_MUX("HPOUT1 Mono Mux", SND_SOC_NOPM, 0, 0, &cs47l15_outdemux),
 
 SND_SOC_DAPM_PGA("PWM1 Driver", MADERA_PWM_DRIVE_1, MADERA_PWM1_ENA_SHIFT,
 		 0, NULL, 0),
@@ -1084,6 +1085,9 @@ static const struct snd_soc_dapm_route cs47l15_dapm_routes[] = {
 	{ "AEC2 Loopback", "HPOUT1R", "OUT1R" },
 	{ "HPOUT1 Demux", NULL, "OUT1L" },
 	{ "HPOUT1 Demux", NULL, "OUT1R" },
+
+	{ "OUT1R", NULL, "HPOUT1 Mono Mux" },
+
 	{ "HPOUTL", "HPOUT", "HPOUT1 Demux" },
 	{ "HPOUTR", "HPOUT", "HPOUT1 Demux" },
 	{ "EPOUTP", "EPOUT", "HPOUT1 Demux" },
@@ -1261,6 +1265,11 @@ static irqreturn_t cs47l15_adsp2_irq(int irq, void *data)
 	return IRQ_HANDLED;
 }
 
+static const struct snd_soc_dapm_route cs47l15_mono_routes[] = {
+	{ "HPOUT1 Mono Mux", "HPOUT", "OUT1L" },
+	{ "HPOUT1 Mono Mux", "EPOUT", "OUT1L" },
+};
+
 static int cs47l15_component_probe(struct snd_soc_component *component)
 {
 	struct cs47l15 *cs47l15 = snd_soc_component_get_drvdata(component);
@@ -1277,7 +1286,9 @@ static int cs47l15_component_probe(struct snd_soc_component *component)
 	if (ret)
 		return ret;
 
-	ret = madera_init_outputs(component, CS47L15_MONO_OUTPUTS);
+	ret = madera_init_outputs(component, cs47l15_mono_routes,
+				  ARRAY_SIZE(cs47l15_mono_routes),
+				  CS47L15_MONO_OUTPUTS);
 	if (ret)
 		return ret;
 

sound/soc/codecs/cs47l35.c

@@ -631,6 +631,7 @@ SND_SOC_DAPM_OUTPUT("DRC2 Signal Activity"),
 SND_SOC_DAPM_OUTPUT("DSP Trigger Out"),
 
 SND_SOC_DAPM_DEMUX("HPOUT1 Demux", SND_SOC_NOPM, 0, 0, &cs47l35_outdemux),
+SND_SOC_DAPM_MUX("HPOUT1 Mono Mux", SND_SOC_NOPM, 0, 0, &cs47l35_outdemux),
 
 SND_SOC_DAPM_PGA("PWM1 Driver", MADERA_PWM_DRIVE_1, MADERA_PWM1_ENA_SHIFT,
 		 0, NULL, 0),
@@ -1309,6 +1310,8 @@ static const struct snd_soc_dapm_route cs47l35_dapm_routes[] = {
 	{ "SPKOUTN", NULL, "OUT4L" },
 	{ "SPKOUTP", NULL, "OUT4L" },
 
+	{ "OUT1R", NULL, "HPOUT1 Mono Mux" },
+
 	{ "HPOUTL", "HPOUT", "HPOUT1 Demux" },
 	{ "HPOUTR", "HPOUT", "HPOUT1 Demux" },
 	{ "EPOUTP", "EPOUT", "HPOUT1 Demux" },
@@ -1552,6 +1555,11 @@ static irqreturn_t cs47l35_adsp2_irq(int irq, void *data)
 	return IRQ_HANDLED;
 }
 
+static const struct snd_soc_dapm_route cs47l35_mono_routes[] = {
+	{ "HPOUT1 Mono Mux", "HPOUT", "OUT1L" },
+	{ "HPOUT1 Mono Mux", "EPOUT", "OUT1L" },
+};
+
 static int cs47l35_component_probe(struct snd_soc_component *component)
 {
 	struct cs47l35 *cs47l35 = snd_soc_component_get_drvdata(component);
@@ -1568,7 +1576,9 @@ static int cs47l35_component_probe(struct snd_soc_component *component)
 	if (ret)
 		return ret;
 
-	ret = madera_init_outputs(component, CS47L35_MONO_OUTPUTS);
+	ret = madera_init_outputs(component, cs47l35_mono_routes,
+				  ARRAY_SIZE(cs47l35_mono_routes),
+				  CS47L35_MONO_OUTPUTS);
 	if (ret)
 		return ret;
 

sound/soc/codecs/cs47l85.c

@@ -2507,7 +2507,8 @@ static int cs47l85_component_probe(struct snd_soc_component *component)
 	if (ret)
 		return ret;
 
-	ret = madera_init_outputs(component, CS47L85_MONO_OUTPUTS);
+	ret = madera_init_outputs(component, NULL, CS47L85_MONO_OUTPUTS,
+				  CS47L85_MONO_OUTPUTS);
 	if (ret)
 		return ret;
 

sound/soc/codecs/cs47l90.c

@@ -2418,7 +2418,8 @@ static int cs47l90_component_probe(struct snd_soc_component *component)
 	if (ret)
 		return ret;
 
-	ret = madera_init_outputs(component, CS47L90_MONO_OUTPUTS);
+	ret = madera_init_outputs(component, NULL, CS47L90_MONO_OUTPUTS,
+				  CS47L90_MONO_OUTPUTS);
 	if (ret)
 		return ret;
 

sound/soc/codecs/cs47l92.c

@@ -730,6 +730,7 @@ SND_SOC_DAPM_MUX("IN2L Mode", SND_SOC_NOPM, 0, 0, &madera_inmode[1]),
 SND_SOC_DAPM_MUX("IN2R Mode", SND_SOC_NOPM, 0, 0, &madera_inmode[1]),
 
 SND_SOC_DAPM_DEMUX("OUT3 Demux", SND_SOC_NOPM, 0, 0, &cs47l92_outdemux),
+SND_SOC_DAPM_MUX("OUT3 Mono Mux", SND_SOC_NOPM, 0, 0, &cs47l92_outdemux),
 
 SND_SOC_DAPM_OUTPUT("DRC1 Signal Activity"),
 SND_SOC_DAPM_OUTPUT("DRC2 Signal Activity"),
@@ -1584,6 +1585,8 @@ static const struct snd_soc_dapm_route cs47l92_dapm_routes[] = {
 	{ "OUT3 Demux", NULL, "OUT3L" },
 	{ "OUT3 Demux", NULL, "OUT3R" },
 
+	{ "OUT3R", NULL, "OUT3 Mono Mux" },
+
 	{ "HPOUT3L", "HPOUT3", "OUT3 Demux" },
 	{ "HPOUT3R", "HPOUT3", "OUT3 Demux" },
 	{ "HPOUT4L", "HPOUT4", "OUT3 Demux" },
@@ -1817,6 +1820,13 @@ static irqreturn_t cs47l92_adsp2_irq(int irq, void *data)
 	return IRQ_HANDLED;
 }
 
+static const struct snd_soc_dapm_route cs47l92_mono_routes[] = {
+	{ "OUT1R", NULL, "OUT1L" },
+	{ "OUT2R", NULL, "OUT2L" },
+	{ "OUT3 Mono Mux", "HPOUT3", "OUT3L" },
+	{ "OUT3 Mono Mux", "HPOUT4", "OUT3L" },
+};
+
 static int cs47l92_component_probe(struct snd_soc_component *component)
 {
 	struct cs47l92 *cs47l92 = snd_soc_component_get_drvdata(component);
@@ -1833,7 +1843,9 @@ static int cs47l92_component_probe(struct snd_soc_component *component)
 	if (ret)
 		return ret;
 
-	ret = madera_init_outputs(component, CS47L92_MONO_OUTPUTS);
+	ret = madera_init_outputs(component, cs47l92_mono_routes,
+				  ARRAY_SIZE(cs47l92_mono_routes),
+				  CS47L92_MONO_OUTPUTS);
 	if (ret)
 		return ret;
 

sound/soc/codecs/madera.c

@@ -1162,7 +1162,9 @@ static const struct snd_soc_dapm_route madera_mono_routes[] = {
 	{ "OUT6R", NULL, "OUT6L" },
 };
 
-int madera_init_outputs(struct snd_soc_component *component, int n_mono_routes)
+int madera_init_outputs(struct snd_soc_component *component,
+			const struct snd_soc_dapm_route *routes,
+			int n_mono_routes, int n_real)
 {
 	struct snd_soc_dapm_context *dapm =
 		snd_soc_component_get_dapm(component);
@@ -1179,16 +1181,21 @@ int madera_init_outputs(struct snd_soc_component *component, int n_mono_routes)
 		n_mono_routes = MADERA_MAX_OUTPUT;
 	}
 
+	if (!routes)
+		routes = madera_mono_routes;
+
 	for (i = 0; i < n_mono_routes; i++) {
 		/* Default is 0 so noop with defaults */
 		if (pdata->out_mono[i]) {
 			val = MADERA_OUT1_MONO;
-			snd_soc_dapm_add_routes(dapm,
-						&madera_mono_routes[i], 1);
+			snd_soc_dapm_add_routes(dapm, &routes[i], 1);
 		} else {
 			val = 0;
 		}
 
+		if (i >= n_real)
+			continue;
+
 		regmap_update_bits(madera->regmap,
 				   MADERA_OUTPUT_PATH_CONFIG_1L + (i * 8),
 				   MADERA_OUT1_MONO, val);

sound/soc/codecs/madera.h

@@ -421,7 +421,9 @@ int madera_core_free(struct madera_priv *priv);
 int madera_init_overheat(struct madera_priv *priv);
 int madera_free_overheat(struct madera_priv *priv);
 int madera_init_inputs(struct snd_soc_component *component);
-int madera_init_outputs(struct snd_soc_component *component, int n_mono_routes);
+int madera_init_outputs(struct snd_soc_component *component,
+			const struct snd_soc_dapm_route *routes,
+			int n_mono_routes, int n_real);
 int madera_init_bus_error_irq(struct madera_priv *priv, int dsp_num,
 			      irq_handler_t handler);
 void madera_free_bus_error_irq(struct madera_priv *priv, int dsp_num);