Unverified Commit 8a98e7f5 authored Jan 13, 2026 by Emil Svendsen Committed by Mark Brown Jan 14, 2026

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 <emas@bang-olufsen.dk>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Link: https://patch.msgid.link/20260113-sound-soc-codecs-tvl320adcx140-v4-10-8f7ecec525c8@pengutronix.de


Signed-off-by: Mark Brown <broonie@kernel.org>

parent 2219823f

sound/soc/codecs/tlv320adcx140.c

+9 −0

Original line number	Diff line number	Diff line
		@@ -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)