From e2bcbf99d045f6ae3826e39d1ed25978de17cbfe Mon Sep 17 00:00:00 2001 From: Richard Fitzgerald Date: Tue, 15 Apr 2025 12:50:16 +0100 Subject: ASoC: cs48l32: Add driver for Cirrus Logic CS48L32 audio DSP Add a codec driver for the Cirrus Logic CS48L32 audio DSP. The CS48L32 is a low-power audio DSP with microphone inputs for "Always on Voice" (i.e. voice trigger) and voice command processing. It has a programmable Halo Core DSP and a variety of power-efficient fixed-function audio processors, with configurable digital mixing and routing. There are two I2S/TDM audio serial ports. Four analogue inputs are available through IN1. These feed into a 2-channel ADC through an analogue mux. There is an ALSA control for each IN1 ADC channel to select which analogue input to use. A dedicated digital mic (DMIC) PDM input is available on IN2. Two PDM outputs can feed DMIC inputs on another codec or a host DMIC/PDM input. An on-board regulator provides a power supply or bias voltage to attached microphones. Three switchable MICBIAS outputs are fed from this allowing only the microphone in use to be powered-up. There are DAPM widgets for these outputs: MICBIAS1A, MICBIAS1B and MICBIAS1C. The machine driver must create a DAPM route from the required MICBIAS1x widget to the INn input widgets to make the MICBIAS switch on when the audio input is powered-up. For example if the microphone feeding CS48L32 pin IN1LN_1 is powered from MICBIAS1A, the machine driver must create the path: (sink) IN1LN_1 <----- (source) MICBIAS1A Co-developed-by: Stuart Henderson Signed-off-by: Stuart Henderson Co-developed-by: Qi Zhou Signed-off-by: Qi Zhou Co-developed-by: Piotr Stankiewicz Signed-off-by: Piotr Stankiewicz Signed-off-by: Richard Fitzgerald Link: https://patch.msgid.link/20250415115016.505777-3-rf@opensource.cirrus.com Signed-off-by: Mark Brown --- sound/soc/codecs/Makefile | 2 ++ 1 file changed, 2 insertions(+) (limited to 'sound/soc/codecs/Makefile') diff --git a/sound/soc/codecs/Makefile b/sound/soc/codecs/Makefile index 10f726066b6c..c125f69faeaf 100644 --- a/sound/soc/codecs/Makefile +++ b/sound/soc/codecs/Makefile @@ -111,6 +111,7 @@ snd-soc-cs47l35-y := cs47l35.o snd-soc-cs47l85-y := cs47l85.o snd-soc-cs47l90-y := cs47l90.o snd-soc-cs47l92-y := cs47l92.o +snd-soc-cs48l32-y := cs48l32.o cs48l32-tables.o snd-soc-cs53l30-y := cs53l30.o snd-soc-cs530x-y := cs530x.o snd-soc-cs530x-i2c-y := cs530x-i2c.o @@ -529,6 +530,7 @@ obj-$(CONFIG_SND_SOC_CS47L35) += snd-soc-cs47l35.o obj-$(CONFIG_SND_SOC_CS47L85) += snd-soc-cs47l85.o obj-$(CONFIG_SND_SOC_CS47L90) += snd-soc-cs47l90.o obj-$(CONFIG_SND_SOC_CS47L92) += snd-soc-cs47l92.o +obj-$(CONFIG_SND_SOC_CS48L32) += snd-soc-cs48l32.o obj-$(CONFIG_SND_SOC_CS53L30) += snd-soc-cs53l30.o obj-$(CONFIG_SND_SOC_CS530X) += snd-soc-cs530x.o obj-$(CONFIG_SND_SOC_CS530X_I2C) += snd-soc-cs530x-i2c.o -- cgit v1.2.3