From 8a98e7f55f975360975083166e21982ef307b8fd Mon Sep 17 00:00:00 2001 From: Emil Svendsen Date: Tue, 13 Jan 2026 11:58:53 +0100 Subject: [PATCH] ASoC: tlv320adcx140: add channel sum control Add control for channel summation. 3 modes are supported: 1. "Disabled": Normal operation 2. "2 Channel": Every two channels are summed and divided by 2 Out 1 <- (CH1 + CH2) / 2 Out 2 <- (CH1 + CH2) / 2 Out 3 <- (CH3 + CH4) / 2 Out 4 <- (CH3 + CH4) / 2 3. "4 Channel": Every four channels are summed and divided by 4 Out 1 <- (CH1 + CH2 + CH3 + CH4) / 4 Out 2 <- (CH1 + CH2 + CH3 + CH4) / 4 Out 3 <- (CH1 + CH2 + CH3 + CH4) / 4 Out 4 <- (CH1 + CH2 + CH3 + CH4) / 4 Signed-off-by: Emil Svendsen Signed-off-by: Sascha Hauer Link: https://patch.msgid.link/20260113-sound-soc-codecs-tvl320adcx140-v4-10-8f7ecec525c8@pengutronix.de Signed-off-by: Mark Brown --- sound/soc/codecs/tlv320adcx140.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/sound/soc/codecs/tlv320adcx140.c b/sound/soc/codecs/tlv320adcx140.c index e7c607af642f..ac6aab8d7224 100644 --- a/sound/soc/codecs/tlv320adcx140.c +++ b/sound/soc/codecs/tlv320adcx140.c @@ -222,6 +222,13 @@ static const struct snd_kcontrol_new decimation_filter_controls[] = { SOC_DAPM_ENUM("Decimation Filter", decimation_filter_enum), }; +static const char * const channel_summation_text[] = { + "Disabled", "2 Channel", "4 Channel" +}; + +static SOC_ENUM_SINGLE_DECL(channel_summation_enum, ADCX140_DSP_CFG0, 2, + channel_summation_text); + static const char * const pdmclk_text[] = { "2.8224 MHz", "1.4112 MHz", "705.6 kHz", "5.6448 MHz" }; @@ -711,6 +718,8 @@ static const struct snd_kcontrol_new adcx140_snd_controls[] = { ADCX140_PHASE_CALIB_SWITCH("Phase Calibration Switch"), SOC_SINGLE("Biquads Per Channel", ADCX140_DSP_CFG1, 5, 3, 0), + + SOC_ENUM("Channel Summation", channel_summation_enum), }; static int adcx140_reset(struct adcx140_priv *adcx140) -- 2.47.3