[alsa-devel] [PATCH 07/17] ASoC: twl6040: Lower the initial gains

[Peter Ujfalusi]

The default gains on outputs/inputs are set to 0dB.
To be able to handle pop noise better, we need to lower
the gains on controls, where it is possible.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi at ti.com>
---
 sound/soc/codecs/twl6040.c |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)

diff --git a/sound/soc/codecs/twl6040.c b/sound/soc/codecs/twl6040.c
index 987d9c9..1f6068b 100644
--- a/sound/soc/codecs/twl6040.c
+++ b/sound/soc/codecs/twl6040.c
@@ -269,6 +269,13 @@ static void twl6040_init_chip(struct snd_soc_codec *codec)
 	/* No imput selected for microphone amplifiers */
 	twl6040_write_reg_cache(codec, TWL6040_REG_MICLCTL, 0x18);
 	twl6040_write_reg_cache(codec, TWL6040_REG_MICRCTL, 0x18);
+
+	/* Lower the gains */
+	twl6040_write_reg_cache(codec, TWL6040_REG_HSGAIN, 0xff);
+	twl6040_write_reg_cache(codec, TWL6040_REG_EARCTL, 0x1e);
+	twl6040_write_reg_cache(codec, TWL6040_REG_HFLGAIN, 0x1d);
+	twl6040_write_reg_cache(codec, TWL6040_REG_HFRGAIN, 0x1d);
+	twl6040_write_reg_cache(codec, TWL6040_REG_LINEGAIN, 0);
 }
 
 static void twl6040_restore_regs(struct snd_soc_codec *codec)
-- 
1.7.6.1