ASoC: arizona: Add output power up/down delays for speaker path

The later Arizona parts do run write sequences to power up and down the
speaker path as such a delay needs to be inserted into the DAPM sequence
to allow this to run. This patch adds appropriate delays into the
existing coalesced delay scheme.
Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/arizona.c

@@ -109,7 +109,7 @@ static int arizona_spk_ev(struct snd_soc_dapm_widget *w,
 		break;
 	}
 
-	return 0;
+	return arizona_out_ev(w, kcontrol, event);
 }
 
 static irqreturn_t arizona_thermal_warn(int irq, void *data)
@@ -159,12 +159,14 @@ static irqreturn_t arizona_thermal_shutdown(int irq, void *data)
 static const struct snd_soc_dapm_widget arizona_spkl =
 	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);
+			   SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU |
+			   SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMD);
 
 static const struct snd_soc_dapm_widget arizona_spkr =
 	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);
+			   SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU |
+			   SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMD);
 
 int arizona_init_spk(struct snd_soc_codec *codec)
 {
@@ -864,6 +866,7 @@ int arizona_out_ev(struct snd_soc_dapm_widget *w,
 {
 	struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm);
 	struct arizona_priv *priv = snd_soc_codec_get_drvdata(codec);
+	struct arizona *arizona = priv->arizona;
 
 	switch (event) {
 	case SND_SOC_DAPM_PRE_PMU:
@@ -877,6 +880,18 @@ int arizona_out_ev(struct snd_soc_dapm_widget *w,
 			priv->out_up_pending++;
 			priv->out_up_delay += 17;
 			break;
+		case ARIZONA_OUT4L_ENA_SHIFT:
+		case ARIZONA_OUT4R_ENA_SHIFT:
+			priv->out_up_pending++;
+			switch (arizona->type) {
+			case WM5102:
+			case WM8997:
+				break;
+			default:
+				priv->out_up_delay += 10;
+				break;
+			}
+			break;
 		default:
 			break;
 		}
@@ -889,8 +904,10 @@ int arizona_out_ev(struct snd_soc_dapm_widget *w,
 		case ARIZONA_OUT2R_ENA_SHIFT:
 		case ARIZONA_OUT3L_ENA_SHIFT:
 		case ARIZONA_OUT3R_ENA_SHIFT:
+		case ARIZONA_OUT4L_ENA_SHIFT:
+		case ARIZONA_OUT4R_ENA_SHIFT:
 			priv->out_up_pending--;
-			if (!priv->out_up_pending) {
+			if (!priv->out_up_pending && priv->out_up_delay) {
 				dev_dbg(codec->dev, "Power up delay: %d\n",
 					priv->out_up_delay);
 				msleep(priv->out_up_delay);
@@ -913,6 +930,21 @@ int arizona_out_ev(struct snd_soc_dapm_widget *w,
 			priv->out_down_pending++;
 			priv->out_down_delay++;
 			break;
+		case ARIZONA_OUT4L_ENA_SHIFT:
+		case ARIZONA_OUT4R_ENA_SHIFT:
+			priv->out_down_pending++;
+			switch (arizona->type) {
+			case WM5102:
+			case WM8997:
+				break;
+			case WM8998:
+			case WM1814:
+				priv->out_down_delay += 5;
+				break;
+			default:
+				priv->out_down_delay++;
+				break;
+			}
 		default:
 			break;
 		}
@@ -925,8 +957,10 @@ int arizona_out_ev(struct snd_soc_dapm_widget *w,
 		case ARIZONA_OUT2R_ENA_SHIFT:
 		case ARIZONA_OUT3L_ENA_SHIFT:
 		case ARIZONA_OUT3R_ENA_SHIFT:
+		case ARIZONA_OUT4L_ENA_SHIFT:
+		case ARIZONA_OUT4R_ENA_SHIFT:
 			priv->out_down_pending--;
-			if (!priv->out_down_pending) {
+			if (!priv->out_down_pending && priv->out_down_delay) {
 				dev_dbg(codec->dev, "Power down delay: %d\n",
 					priv->out_down_delay);
 				msleep(priv->out_down_delay);