ASoC: cs42l43: Add support for the cs42l43

The CS42L43 is an audio CODEC with integrated MIPI SoundWire interface
(Version 1.2.1 compliant), I2C, SPI, and I2S/TDM interfaces designed
for portable applications. It provides a high dynamic range, stereo
DAC for headphone output, two integrated Class D amplifiers for
loudspeakers, and two ADCs for wired headset microphone input or
stereo line input. PDM inputs are provided for digital microphones.

The ASoC component provides the majority of the functionality of the
device, all the audio functions.

Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20230804104602.395892-7-ckeepax@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>

include/sound/cs42l43.h

@@ -0,0 +1,17 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * CS42L43 CODEC driver external data
+ *
+ * Copyright (C) 2022-2023 Cirrus Logic, Inc. and
+ *                         Cirrus Logic International Semiconductor Ltd.
+ */
+
+#ifndef CS42L43_ASOC_EXT_H
+#define CS42L43_ASOC_EXT_H
+
+#define CS42L43_SYSCLK		0
+
+#define CS42L43_SYSCLK_MCLK	0
+#define CS42L43_SYSCLK_SDW	1
+
+#endif /* CS42L43_ASOC_EXT_H */

sound/soc/codecs/Kconfig

@@ -74,6 +74,8 @@ config SND_SOC_ALL_CODECS
 	imply SND_SOC_CS35L56_SDW
 	imply SND_SOC_CS42L42
 	imply SND_SOC_CS42L42_SDW
+	imply SND_SOC_CS42L43
+	imply SND_SOC_CS42L43_SDW
 	imply SND_SOC_CS42L51_I2C
 	imply SND_SOC_CS42L52
 	imply SND_SOC_CS42L56
@@ -789,6 +791,20 @@ config SND_SOC_CS42L42_SDW
 	help
 	  Enable support for Cirrus Logic CS42L42 codec with Soundwire control
 
+config SND_SOC_CS42L43
+	tristate "Cirrus Logic CS42L43 CODEC"
+	depends on MFD_CS42L43
+	help
+	  Select this to support the audio functions of the Cirrus Logic
+	  CS42L43 PC CODEC.
+
+config SND_SOC_CS42L43_SDW
+	tristate "Cirrus Logic CS42L43 CODEC (SoundWire)"
+	depends on SND_SOC_CS42L43 && MFD_CS42L43_SDW
+	help
+	  Select this to support the audio functions of the Cirrus Logic
+	  CS42L43 PC CODEC over SoundWire.
+
 config SND_SOC_CS42L51
 	tristate
 

sound/soc/codecs/Makefile

@@ -75,6 +75,8 @@ snd-soc-cs35l56-sdw-objs := cs35l56-sdw.o
 snd-soc-cs42l42-objs := cs42l42.o
 snd-soc-cs42l42-i2c-objs := cs42l42-i2c.o
 snd-soc-cs42l42-sdw-objs := cs42l42-sdw.o
+snd-soc-cs42l43-objs := cs42l43.o cs42l43-jack.o
+snd-soc-cs42l43-sdw-objs := cs42l43-sdw.o
 snd-soc-cs42l51-objs := cs42l51.o
 snd-soc-cs42l51-i2c-objs := cs42l51-i2c.o
 snd-soc-cs42l52-objs := cs42l52.o
@@ -457,6 +459,8 @@ obj-$(CONFIG_SND_SOC_CS35L56_SDW)	+= snd-soc-cs35l56-sdw.o
 obj-$(CONFIG_SND_SOC_CS42L42_CORE)	+= snd-soc-cs42l42.o
 obj-$(CONFIG_SND_SOC_CS42L42)	+= snd-soc-cs42l42-i2c.o
 obj-$(CONFIG_SND_SOC_CS42L42_SDW)	+= snd-soc-cs42l42-sdw.o
+obj-$(CONFIG_SND_SOC_CS42L43)	+= snd-soc-cs42l43.o
+obj-$(CONFIG_SND_SOC_CS42L43_SDW)	+= snd-soc-cs42l43-sdw.o
 obj-$(CONFIG_SND_SOC_CS42L51)	+= snd-soc-cs42l51.o
 obj-$(CONFIG_SND_SOC_CS42L51_I2C)	+= snd-soc-cs42l51-i2c.o
 obj-$(CONFIG_SND_SOC_CS42L52)	+= snd-soc-cs42l52.o