diff options
| -rw-r--r-- | sound/soc/codecs/twl6040.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/sound/soc/codecs/twl6040.c b/sound/soc/codecs/twl6040.c index 81645c63244..0694d65f9de 100644 --- a/sound/soc/codecs/twl6040.c +++ b/sound/soc/codecs/twl6040.c @@ -269,6 +269,17 @@ 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); + + /* + * We need to lower the default gain values, so the ramp code + * can work correctly for the first playback. + * This reduces the pop noise heard at the first playback. + */ + 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) |