ASoC: Add ak4619 codec support

Merge series from Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>:

This is v3 patch-set for ak4619 driver.
It was created by Khanh, and I updated/adjusted to upstream.
It was tested on Renesas V4M GrayH

Link: https://lore.kernel.org/r/877ceotnrg.wl-kuninori.morimoto.gx@renesas.com
Link: https://lore.kernel.org/r/87frtb3x4k.wl-kuninori.morimoto.gx@renesas.com

Documentation/devicetree/bindings/sound/asahi-kasei,ak4619.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/asahi-kasei,ak4619.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: AK4619 I2C transmitter
+
+maintainers:
+  - Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
+  - Khanh Le <khanh.le.xr@renesas.com>
+
+allOf:
+  - $ref: dai-common.yaml#
+
+properties:
+  compatible:
+    const: asahi-kasei,ak4619
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  clock-names:
+    items:
+      - const: mclk
+
+  "#sound-dai-cells":
+    const: 0
+
+  port:
+    $ref: audio-graph-port.yaml#
+    unevaluatedProperties: false
+
+required:
+  - compatible
+  - reg
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+        codec@10 {
+            compatible = "asahi-kasei,ak4619";
+            reg = <0x10>;
+
+            clocks = <&rcar_sound>;
+            clock-names = "mclk";
+
+            #sound-dai-cells = <0>;
+            port {
+                 ak4619_endpoint: endpoint {
+                       remote-endpoint = <&rsnd_endpoint>;
+                  };
+            };
+        };
+    };

sound/soc/codecs/Kconfig

@@ -45,6 +45,7 @@ config SND_SOC_ALL_CODECS
 	imply SND_SOC_AK4535
 	imply SND_SOC_AK4554
 	imply SND_SOC_AK4613
+	imply SND_SOC_AK4619
 	imply SND_SOC_AK4641
 	imply SND_SOC_AK4642
 	imply SND_SOC_AK4671
@@ -600,6 +601,10 @@ config SND_SOC_AK4613
 	tristate "AKM AK4613 CODEC"
 	depends on I2C
 
+config SND_SOC_AK4619
+        tristate "AKM AK4619 CODEC"
+        depends on I2C
+
 config SND_SOC_AK4641
 	tristate
 	depends on I2C

sound/soc/codecs/Makefile

@@ -39,6 +39,7 @@ snd-soc-ak4458-y := ak4458.o
 snd-soc-ak4535-y := ak4535.o
 snd-soc-ak4554-y := ak4554.o
 snd-soc-ak4613-y := ak4613.o
+snd-soc-ak4619-y := ak4619.o
 snd-soc-ak4641-y := ak4641.o
 snd-soc-ak4642-y := ak4642.o
 snd-soc-ak4671-y := ak4671.o
@@ -442,6 +443,7 @@ obj-$(CONFIG_SND_SOC_AK4458)	+= snd-soc-ak4458.o
 obj-$(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-$(CONFIG_SND_SOC_AK4619)	+= snd-soc-ak4619.o
 obj-$(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