2013-07-22 18:41:23 +00:00
|
|
|
From 46c628ae74578382ec324405dd4caafdbf3838bd Mon Sep 17 00:00:00 2001
|
|
|
|
|
From: Paul Cercueil <paul@crapouillou.net>
|
|
|
|
|
Date: Sat, 16 Jun 2012 19:36:31 +0200
|
|
|
|
|
Subject: [PATCH 06/16] ASoC: JZ4740: delay activation of the DAC to work
|
|
|
|
|
around a sound bug.
|
|
|
|
|
|
|
|
|
|
A proper fix of that bug would require a big rewrite of the driver,
|
|
|
|
|
which (I hope) will be done eventually.
|
|
|
|
|
|
|
|
|
|
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
|
|
|
|
|
---
|
|
|
|
|
sound/soc/codecs/jz4740.c | 9 ++++++---
|
|
|
|
|
1 file changed, 6 insertions(+), 3 deletions(-)
|
|
|
|
|
|
|
|
|
|
--- a/sound/soc/codecs/jz4740.c
|
|
|
|
|
+++ b/sound/soc/codecs/jz4740.c
|
2013-07-26 07:19:58 +00:00
|
|
|
@@ -249,12 +249,15 @@ static int jz4740_codec_set_bias_level(s
|
2013-07-22 18:41:23 +00:00
|
|
|
case SND_SOC_BIAS_ON:
|
|
|
|
|
break;
|
|
|
|
|
case SND_SOC_BIAS_PREPARE:
|
|
|
|
|
- mask = JZ4740_CODEC_1_VREF_DISABLE |
|
|
|
|
|
- JZ4740_CODEC_1_VREF_AMP_DISABLE |
|
|
|
|
|
- JZ4740_CODEC_1_HEADPHONE_POWERDOWN_M;
|
|
|
|
|
+ mask = JZ4740_CODEC_1_HEADPHONE_POWERDOWN_M;
|
|
|
|
|
value = 0;
|
|
|
|
|
|
|
|
|
|
regmap_update_bits(regmap, JZ4740_REG_CODEC_1, mask, value);
|
|
|
|
|
+
|
|
|
|
|
+ msleep(500);
|
|
|
|
|
+ mask = JZ4740_CODEC_1_VREF_DISABLE |
|
|
|
|
|
+ JZ4740_CODEC_1_VREF_AMP_DISABLE;
|
|
|
|
|
+ regmap_update_bits(regmap, JZ4740_REG_CODEC_1, mask, 0);
|
|
|
|
|
break;
|
|
|
|
|
case SND_SOC_BIAS_STANDBY:
|
|
|
|
|
/* The only way to clear the suspend flag is to reset the codec */
|
