From: Mark Brown <broonie@opensource.wolfsonmicro.com>
Date: Mon, 30 Jul 2012 17:24:19 +0000 (+0100)
Subject: ASoC: wm8962: Allow VMID time to fully ramp
X-Git-Tag: v3.0.40~7
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=4ae4c20ceb593c1a8f392bb1100cc60a1f04ee4c;p=karo-tx-linux.git

ASoC: wm8962: Allow VMID time to fully ramp

commit 9d40e5582c9c4cfb6977ba2a0ca9c2ed82c56f21 upstream.

Required for reliable power up from cold.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/sound/soc/codecs/wm8962.c b/sound/soc/codecs/wm8962.c
index c850e3d84ed0..f16f587dfb0e 100644
--- a/sound/soc/codecs/wm8962.c
+++ b/sound/soc/codecs/wm8962.c
@@ -2890,6 +2890,9 @@ static int wm8962_set_bias_level(struct snd_soc_codec *codec,
 		/* VMID 2*250k */
 		snd_soc_update_bits(codec, WM8962_PWR_MGMT_1,
 				    WM8962_VMID_SEL_MASK, 0x100);
+
+		if (codec->dapm.bias_level == SND_SOC_BIAS_OFF)
+			msleep(100);
 		break;
 
 	case SND_SOC_BIAS_OFF: