From: Mark Brown <broonie@opensource.wolfsonmicro.com>
Date: Sun, 24 Mar 2013 22:50:23 +0000 (+0000)
Subject: ASoC: arizona: Add delay after powering up line level outputs
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=1a2c7d568f624307c5821f31e54727a4b374855c;p=openwrt%2Fstaging%2Fblogic.git

ASoC: arizona: Add delay after powering up line level outputs

Ensure that the outputs are fully enabled before we begin passing audio
through them.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
---

diff --git a/sound/soc/codecs/arizona.c b/sound/soc/codecs/arizona.c
index abdd019c5b6e..389f23253831 100644
--- a/sound/soc/codecs/arizona.c
+++ b/sound/soc/codecs/arizona.c
@@ -579,6 +579,24 @@ int arizona_out_ev(struct snd_soc_dapm_widget *w,
 		   struct snd_kcontrol *kcontrol,
 		   int event)
 {
+	switch (event) {
+	case SND_SOC_DAPM_POST_PMU:
+		switch (w->shift) {
+		case ARIZONA_OUT1L_ENA_SHIFT:
+		case ARIZONA_OUT1R_ENA_SHIFT:
+		case ARIZONA_OUT2L_ENA_SHIFT:
+		case ARIZONA_OUT2R_ENA_SHIFT:
+		case ARIZONA_OUT3L_ENA_SHIFT:
+		case ARIZONA_OUT3R_ENA_SHIFT:
+			msleep(17);
+			break;
+
+		default:
+			break;
+		}
+		break;
+	}
+
 	return 0;
 }
 EXPORT_SYMBOL_GPL(arizona_out_ev);