ASoC: add ak4613 support

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

Documentation/devicetree/bindings/sound/ak4613.txt

+AK4613 I2C transmitter
+
+This device supports I2C mode only.
+
+Required properties:
+
+- compatible : "asahi-kasei,ak4613"
+- reg : The chip select number on the I2C bus
+
+Example:
+
+&i2c {
+	ak4613: ak4613@0x10 {
+		compatible = "asahi-kasei,ak4613";
+		reg = <0x10>;
+	};
+};

sound/soc/codecs/Kconfig

@@ -36,6 +36,7 @@ config SND_SOC_ALL_CODECS
 	select SND_SOC_AK4104 if SPI_MASTER
 	select SND_SOC_AK4535 if I2C
 	select SND_SOC_AK4554
+	select SND_SOC_AK4613 if I2C
 	select SND_SOC_AK4641 if I2C
 	select SND_SOC_AK4642 if I2C
 	select SND_SOC_AK4671 if I2C
@@ -319,6 +320,10 @@ config SND_SOC_AK4535
 config SND_SOC_AK4554
 	tristate "AKM AK4554 CODEC"
 
+config SND_SOC_AK4613
+	tristate "AKM AK4613 CODEC"
+	depends on I2C
+
 config SND_SOC_AK4641
 	tristate
 

sound/soc/codecs/Makefile

@@ -26,6 +26,7 @@ snd-soc-ads117x-objs := ads117x.o
 snd-soc-ak4104-objs := ak4104.o
 snd-soc-ak4535-objs := ak4535.o
 snd-soc-ak4554-objs := ak4554.o
+snd-soc-ak4613-objs := ak4613.o
 snd-soc-ak4641-objs := ak4641.o
 snd-soc-ak4642-objs := ak4642.o
 snd-soc-ak4671-objs := ak4671.o
@@ -216,6 +217,7 @@ obj-$(CONFIG_SND_SOC_ADS117X)	+= snd-soc-ads117x.o
 obj-$(CONFIG_SND_SOC_AK4104)	+= snd-soc-ak4104.o
 obj-$(CONFIG_SND_SOC_AK4535)	+= snd-soc-ak4535.o
 obj-$(CONFIG_SND_SOC_AK4554)	+= snd-soc-ak4554.o
+obj-$(CONFIG_SND_SOC_AK4613)	+= snd-soc-ak4613.o
 obj-$(CONFIG_SND_SOC_AK4641)	+= snd-soc-ak4641.o
 obj-$(CONFIG_SND_SOC_AK4642)	+= snd-soc-ak4642.o
 obj-$(CONFIG_SND_SOC_AK4671)	+= snd-soc-ak4671.o