Commit 8101d762 authored by Dan Murphy's avatar Dan Murphy Committed by Mark Brown

ASoC: tlv320adcx140: Add decimation filter support

Add decimation filter selection support.
Per Section 8.3.6.7 the Digital Decimation Filter is selectable between
a Linear Phase, Low Latency, and Ultra Low Latency filer.
Signed-off-by: default avatarDan Murphy <dmurphy@ti.com>
Link: https://lore.kernel.org/r/20200221181358.22526-2-dmurphy@ti.comSigned-off-by: default avatarMark Brown <broonie@kernel.org>
parent 8a329dbd
...@@ -169,6 +169,17 @@ static DECLARE_TLV_DB_SCALE(agc_thresh_tlv, -3600, 200, 0); ...@@ -169,6 +169,17 @@ static DECLARE_TLV_DB_SCALE(agc_thresh_tlv, -3600, 200, 0);
/* AGC Max Gain. From 3 dB to 42 dB in 3 dB steps */ /* AGC Max Gain. From 3 dB to 42 dB in 3 dB steps */
static DECLARE_TLV_DB_SCALE(agc_gain_tlv, 300, 300, 0); static DECLARE_TLV_DB_SCALE(agc_gain_tlv, 300, 300, 0);
static const char * const decimation_filter_text[] = {
"Linear Phase", "Low Latency", "Ultra-low Latency"
};
static SOC_ENUM_SINGLE_DECL(decimation_filter_enum, ADCX140_DSP_CFG0, 4,
decimation_filter_text);
static const struct snd_kcontrol_new decimation_filter_controls[] = {
SOC_DAPM_ENUM("Decimation Filter", decimation_filter_enum),
};
static const char * const resistor_text[] = { static const char * const resistor_text[] = {
"2.5 kOhm", "10 kOhm", "20 kOhm" "2.5 kOhm", "10 kOhm", "20 kOhm"
}; };
...@@ -404,6 +415,9 @@ static const struct snd_soc_dapm_widget adcx140_dapm_widgets[] = { ...@@ -404,6 +415,9 @@ static const struct snd_soc_dapm_widget adcx140_dapm_widgets[] = {
in3_resistor_controls), in3_resistor_controls),
SND_SOC_DAPM_MUX("IN4 Analog Mic Resistor", SND_SOC_NOPM, 0, 0, SND_SOC_DAPM_MUX("IN4 Analog Mic Resistor", SND_SOC_NOPM, 0, 0,
in4_resistor_controls), in4_resistor_controls),
SND_SOC_DAPM_MUX("Decimation Filter", SND_SOC_NOPM, 0, 0,
decimation_filter_controls),
}; };
static const struct snd_soc_dapm_route adcx140_audio_map[] = { static const struct snd_soc_dapm_route adcx140_audio_map[] = {
...@@ -418,6 +432,10 @@ static const struct snd_soc_dapm_route adcx140_audio_map[] = { ...@@ -418,6 +432,10 @@ static const struct snd_soc_dapm_route adcx140_audio_map[] = {
{"CH3_ASI_EN", "Switch", "CH3_ADC"}, {"CH3_ASI_EN", "Switch", "CH3_ADC"},
{"CH4_ASI_EN", "Switch", "CH4_ADC"}, {"CH4_ASI_EN", "Switch", "CH4_ADC"},
{"Decimation Filter", "Linear Phase", "DRE_ENABLE"},
{"Decimation Filter", "Low Latency", "DRE_ENABLE"},
{"Decimation Filter", "Ultra-low Latency", "DRE_ENABLE"},
{"DRE_ENABLE", "Switch", "CH1_DRE_EN"}, {"DRE_ENABLE", "Switch", "CH1_DRE_EN"},
{"DRE_ENABLE", "Switch", "CH2_DRE_EN"}, {"DRE_ENABLE", "Switch", "CH2_DRE_EN"},
{"DRE_ENABLE", "Switch", "CH3_DRE_EN"}, {"DRE_ENABLE", "Switch", "CH3_DRE_EN"},
......
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