[alsa-devel] [PATCH] ASoC: Explicitly clear WM8993 ramp controls on power down

[Mark Brown]

This helps ensure that the ramp logic is reset when powering back up.

Signed-off-by: Mark Brown <broonie at opensource.wolfsonmicro.com>
---
 sound/soc/codecs/wm8993.c |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/sound/soc/codecs/wm8993.c b/sound/soc/codecs/wm8993.c
index 77b1d44..15f34a2 100644
--- a/sound/soc/codecs/wm8993.c
+++ b/sound/soc/codecs/wm8993.c
@@ -1030,6 +1030,12 @@ static int wm8993_set_bias_level(struct snd_soc_codec *codec,
 				    WM8993_VMID_SEL_MASK | WM8993_BIAS_ENA,
 				    0);
 
+		snd_soc_update_bits(codec, WM8993_ANTIPOP2,
+				    WM8993_STARTUP_BIAS_ENA |
+				    WM8993_VMID_BUF_ENA |
+				    WM8993_VMID_RAMP_MASK |
+				    WM8993_BIAS_SRC, 0);
+
 #ifdef CONFIG_REGULATOR
                /* Post 2.6.34 we will be able to get a callback when
                 * the regulators are disabled which we can use but
-- 
1.7.1