ASoC: codecs: Add support for the Renesas IDT821034 codec

The Renesas IDT821034 codec is four channel PCM codec with on-chip
filters and programmable gain setting.
It also provides SLIC (Subscriber Line Interface Circuit) signals as
GPIOs.
Signed-off-by: Herve Codina <herve.codina@bootlin.com>
Link: https://lore.kernel.org/r/20230126085137.375814-3-herve.codina@bootlin.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/Kconfig

@@ -107,6 +107,7 @@ config SND_SOC_ALL_CODECS
 	imply SND_SOC_HDAC_HDMI
 	imply SND_SOC_HDAC_HDA
 	imply SND_SOC_ICS43432
+	imply SND_SOC_IDT821034
 	imply SND_SOC_INNO_RK3036
 	imply SND_SOC_ISABELLE
 	imply SND_SOC_JZ4740_CODEC
@@ -973,6 +974,16 @@ config SND_SOC_HDA
 config SND_SOC_ICS43432
 	tristate "ICS43423 and compatible i2s microphones"
 
+config SND_SOC_IDT821034
+	tristate "Renesas IDT821034 quad PCM codec"
+	depends on SPI
+	help
+	  Enable support for the Renesas IDT821034 quad PCM with
+	  programmable gain codec.
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called snd-soc-idt821034.
+
 config SND_SOC_INNO_RK3036
 	tristate "Inno codec driver for RK3036 SoC"
 	select REGMAP_MMIO

sound/soc/codecs/Makefile

@@ -111,6 +111,7 @@ snd-soc-hdac-hdmi-objs := hdac_hdmi.o
 snd-soc-hdac-hda-objs := hdac_hda.o
 snd-soc-hda-codec-objs := hda.o hda-dai.o
 snd-soc-ics43432-objs := ics43432.o
+snd-soc-idt821034-objs := idt821034.o
 snd-soc-inno-rk3036-objs := inno_rk3036.o
 snd-soc-isabelle-objs := isabelle.o
 snd-soc-jz4740-codec-objs := jz4740.o
@@ -473,6 +474,7 @@ obj-$(CONFIG_SND_SOC_HDAC_HDMI) += snd-soc-hdac-hdmi.o
 obj-$(CONFIG_SND_SOC_HDAC_HDA) += snd-soc-hdac-hda.o
 obj-$(CONFIG_SND_SOC_HDA) += snd-soc-hda-codec.o
 obj-$(CONFIG_SND_SOC_ICS43432)	+= snd-soc-ics43432.o
+obj-$(CONFIG_SND_SOC_IDT821034)	+= snd-soc-idt821034.o
 obj-$(CONFIG_SND_SOC_INNO_RK3036)	+= snd-soc-inno-rk3036.o
 obj-$(CONFIG_SND_SOC_ISABELLE)	+= snd-soc-isabelle.o
 obj-$(CONFIG_SND_SOC_JZ4740_CODEC)	+= snd-soc-jz4740-codec.o