From: Misael Lopez Cruz misael.lopez@ti.com
Output driver has two parameters that can be configured to reduce pop noise: power-on delay and ramp-up step time. Two new kcontrols have been added to set these parameters.
Signed-off-by: Misael Lopez Cruz misael.lopez@ti.com Signed-off-by: Peter Ujfalusi peter.ujfalusi@ti.com --- sound/soc/codecs/tlv320aic3x.c | 13 +++++++++++++ 1 file changed, 13 insertions(+)
diff --git a/sound/soc/codecs/tlv320aic3x.c b/sound/soc/codecs/tlv320aic3x.c index f7c2a575a892..70f8b8be9173 100644 --- a/sound/soc/codecs/tlv320aic3x.c +++ b/sound/soc/codecs/tlv320aic3x.c @@ -270,6 +270,15 @@ static const struct soc_enum aic3x_agc_decay_enum[] = { SOC_ENUM_SINGLE(RAGC_CTRL_A, 0, 4, aic3x_agc_decay), };
+static const char * const aic3x_poweron_time[] = { + "0us", "10us", "100us", "1ms", "10ms", "50ms", + "100ms", "200ms", "400ms", "800ms", "2s", "4s" }; +static const char * const aic3x_rampup_step[] = { "0ms", "1ms", "2ms", "4ms" }; +static const struct soc_enum aic3x_pop_reduction_enum[] = { + SOC_ENUM_SINGLE(HPOUT_POP_REDUCTION, 4, 12, aic3x_poweron_time), + SOC_ENUM_SINGLE(HPOUT_POP_REDUCTION, 2, 4, aic3x_rampup_step), +}; + /* * DAC digital volumes. From -63.5 to 0 dB in 0.5 dB steps */ @@ -399,6 +408,10 @@ static const struct snd_kcontrol_new aic3x_snd_controls[] = { SOC_DOUBLE_R("PGA Capture Switch", LADC_VOL, RADC_VOL, 7, 0x01, 1),
SOC_ENUM("ADC HPF Cut-off", aic3x_enum[ADC_HPF_ENUM]), + + /* Pop reduction */ + SOC_ENUM("Output Driver Power-On time", aic3x_pop_reduction_enum[0]), + SOC_ENUM("Output Driver Ramp-up step", aic3x_pop_reduction_enum[1]), };
static const struct snd_kcontrol_new aic3x_mono_controls[] = {