ASoC: arizona: Suppress speaker enable if thermal shutdown is flagged

Ensure that the device state does not diverge from the state we have set
in the register map in order to make the behaviour clearer.
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

sound/soc/codecs/arizona.c

@@ -75,6 +75,7 @@ static int arizona_spk_ev(struct snd_soc_dapm_widget *w,
 	struct arizona *arizona = dev_get_drvdata(codec->dev->parent);
 	struct arizona_priv *priv = snd_soc_codec_get_drvdata(codec);
 	bool manual_ena = false;
+	int val;
 
 	switch (arizona->type) {
 	case WM5102:
@@ -97,6 +98,16 @@ static int arizona_spk_ev(struct snd_soc_dapm_widget *w,
 		}
 		break;
 	case SND_SOC_DAPM_POST_PMU:
+		val = snd_soc_read(codec, ARIZONA_INTERRUPT_RAW_STATUS_3);
+		if (val & ARIZONA_SPK_SHUTDOWN_STS) {
+			dev_crit(arizona->dev,
+				 "Speaker not enabled due to temperature\n");
+			return -EBUSY;
+		}
+
+		snd_soc_update_bits(codec, ARIZONA_OUTPUT_ENABLES_1,
+				    1 << w->shift, 1 << w->shift);
+
 		if (priv->spk_ena_pending) {
 			msleep(75);
 			snd_soc_write(codec, 0x4f5, 0xda);
@@ -110,6 +121,9 @@ static int arizona_spk_ev(struct snd_soc_dapm_widget *w,
 			if (!priv->spk_ena)
 				snd_soc_write(codec, 0x4f5, 0x25a);
 		}
+
+		snd_soc_update_bits(codec, ARIZONA_OUTPUT_ENABLES_1,
+				    1 << w->shift, 0);
 		break;
 	case SND_SOC_DAPM_POST_PMD:
 		if (manual_ena) {
@@ -153,18 +167,26 @@ static irqreturn_t arizona_thermal_shutdown(int irq, void *data)
 			ret);
 	} else if (val & ARIZONA_SPK_SHUTDOWN_STS) {
 		dev_crit(arizona->dev, "Thermal shutdown\n");
+		ret = regmap_update_bits(arizona->regmap,
+					 ARIZONA_OUTPUT_ENABLES_1,
+					 ARIZONA_OUT4L_ENA |
+					 ARIZONA_OUT4R_ENA, 0);
+		if (ret != 0)
+			dev_crit(arizona->dev,
+				 "Failed to disable speaker outputs: %d\n",
+				 ret);
 	}
 
 	return IRQ_HANDLED;
 }
 
 static const struct snd_soc_dapm_widget arizona_spkl =
-	SND_SOC_DAPM_PGA_E("OUT4L", ARIZONA_OUTPUT_ENABLES_1,
+	SND_SOC_DAPM_PGA_E("OUT4L", SND_SOC_NOPM,
 			   ARIZONA_OUT4L_ENA_SHIFT, 0, NULL, 0, arizona_spk_ev,
 			   SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMU);
 
 static const struct snd_soc_dapm_widget arizona_spkr =
-	SND_SOC_DAPM_PGA_E("OUT4R", ARIZONA_OUTPUT_ENABLES_1,
+	SND_SOC_DAPM_PGA_E("OUT4R", SND_SOC_NOPM,
 			   ARIZONA_OUT4R_ENA_SHIFT, 0, NULL, 0, arizona_spk_ev,
 			   SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMU);