ASoC: rt9120: Add rt9210 audio amplifier support

Add Richtek rt9120 audio amplifier support.
Signed-off-by: ChiYuan Huang <cy_huang@richtek.com>
[Fix a Gain->Volume -- broonie]
Message-Id: <1633668612-25524-3-git-send-email-u0084500@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/Kconfig

@@ -191,6 +191,7 @@ config SND_SOC_ALL_CODECS
 	imply SND_SOC_RT715_SDCA_SDW
 	imply SND_SOC_RT1308_SDW
 	imply SND_SOC_RT1316_SDW
+	imply SND_SOC_RT9120
 	imply SND_SOC_SDW_MOCKUP
 	imply SND_SOC_SGTL5000
 	imply SND_SOC_SI476X
@@ -1307,6 +1308,15 @@ config SND_SOC_RT715_SDCA_SDW
 	select REGMAP_SOUNDWIRE
 	select REGMAP_SOUNDWIRE_MBQ
 
+config SND_SOC_RT9120
+	tristate "Richtek RT9120 Stereo Class-D Amplifier"
+	depends on I2C
+	select REGMAP_I2C
+	select GPIOLIB
+	help
+	  Enable support for Richtek RT9120 20W, stereo, inductor-less,
+	  high-efficiency Class-D audio amplifier.
+
 config SND_SOC_SDW_MOCKUP
 	tristate "SoundWire mockup codec"
 	depends on EXPERT

sound/soc/codecs/Makefile

@@ -207,6 +207,7 @@ snd-soc-rt711-objs := rt711.o rt711-sdw.o
 snd-soc-rt711-sdca-objs := rt711-sdca.o rt711-sdca-sdw.o
 snd-soc-rt715-objs := rt715.o rt715-sdw.o
 snd-soc-rt715-sdca-objs := rt715-sdca.o rt715-sdca-sdw.o
+snd-soc-rt9120-objs := rt9120.o
 snd-soc-sdw-mockup-objs := sdw-mockup.o
 snd-soc-sgtl5000-objs := sgtl5000.o
 snd-soc-alc5623-objs := alc5623.o
@@ -539,6 +540,7 @@ obj-$(CONFIG_SND_SOC_RT711)     += snd-soc-rt711.o
 obj-$(CONFIG_SND_SOC_RT711_SDCA_SDW)     += snd-soc-rt711-sdca.o
 obj-$(CONFIG_SND_SOC_RT715)     += snd-soc-rt715.o
 obj-$(CONFIG_SND_SOC_RT715_SDCA_SDW)     += snd-soc-rt715-sdca.o
+obj-$(CONFIG_SND_SOC_RT9120)	+= snd-soc-rt9120.o
 obj-$(CONFIG_SND_SOC_SDW_MOCKUP)     += snd-soc-sdw-mockup.o
 obj-$(CONFIG_SND_SOC_SGTL5000)  += snd-soc-sgtl5000.o
 obj-$(CONFIG_SND_SOC_SIGMADSP)	+= snd-soc-sigmadsp.o