Add a driver for the Iron Device SMA1307 Amp

Merge series from Kiseok Jo <kiseok.jo@irondevice.com>:

This adds basic audio support for the Iron Device SMA1307 amplifier

Author: broonie

Documentation/devicetree/bindings/sound/irondevice,sma1307.yaml

@@ -0,0 +1,53 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/irondevice,sma1307.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Iron Device SMA1307 Audio Amplifier
+
+maintainers:
+  - Kiseok Jo <kiseok.jo@irondevice.com>
+
+description:
+  SMA1307 boosted digital speaker amplifier with feedback-loop.
+
+allOf:
+  - $ref: dai-common.yaml#
+
+properties:
+  compatible:
+    enum:
+      - irondevice,sma1307a
+      - irondevice,sma1307aq
+    description:
+      If a 'q' is added, it indicated the product is AEC-Q100
+      qualified for automotive applications. SMA1307A supports
+      both WLCSP and QFN packages. However, SMA1307AQ only
+      supports the QFN package.
+
+  reg:
+    maxItems: 1
+
+  '#sound-dai-cells':
+    const: 1
+
+required:
+  - compatible
+  - reg
+  - '#sound-dai-cells'
+
+additionalProperties: false
+
+examples:
+  - |
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        amplifier@1e {
+            compatible = "irondevice,sma1307a";
+            reg = <0x1e>;
+            #sound-dai-cells = <1>;
+        };
+    };

sound/soc/codecs/Kconfig

@@ -240,6 +240,7 @@ config SND_SOC_ALL_CODECS
 	imply SND_SOC_SIMPLE_AMPLIFIER
 	imply SND_SOC_SIMPLE_MUX
 	imply SND_SOC_SMA1303
+	imply SND_SOC_SMA1307
 	imply SND_SOC_SPDIF
 	imply SND_SOC_SRC4XXX_I2C
 	imply SND_SOC_SSM2305
@@ -1873,6 +1874,15 @@ config SND_SOC_SMA1303
 	help
 	  Enable support for Iron Device SMA1303 Boosted Class-D amplifier
 
+config SND_SOC_SMA1307
+	tristate "Iron Device SMA1307 Audio Amplifier"
+	depends on I2C
+	help
+	  Enable support for Iron Device SMA1307 boosted digital speaker
+	  amplifier with feedback-loop.
+	  If you are using a system with an SMA1307 amplifier connected
+	  via I2C, enable this option.
+
 config SND_SOC_SPDIF
 	tristate "S/PDIF CODEC"
 

sound/soc/codecs/Makefile

@@ -279,6 +279,7 @@ snd-soc-sigmadsp-i2c-y := sigmadsp-i2c.o
 snd-soc-sigmadsp-regmap-y := sigmadsp-regmap.o
 snd-soc-si476x-y := si476x.o
 snd-soc-sma1303-y := sma1303.o
+snd-soc-sma1307-y := sma1307.o
 snd-soc-spdif-tx-y := spdif_transmitter.o
 snd-soc-spdif-rx-y := spdif_receiver.o
 snd-soc-src4xxx-y := src4xxx.o
@@ -689,6 +690,7 @@ obj-$(CONFIG_SND_SOC_SIGMADSP_I2C)	+= snd-soc-sigmadsp-i2c.o
 obj-$(CONFIG_SND_SOC_SIGMADSP_REGMAP)	+= snd-soc-sigmadsp-regmap.o
 obj-$(CONFIG_SND_SOC_SI476X)	+= snd-soc-si476x.o
 obj-$(CONFIG_SND_SOC_SMA1303)	+= snd-soc-sma1303.o
+obj-$(CONFIG_SND_SOC_SMA1307)	+= snd-soc-sma1307.o
 obj-$(CONFIG_SND_SOC_SPDIF)	+= snd-soc-spdif-rx.o snd-soc-spdif-tx.o
 obj-$(CONFIG_SND_SOC_SRC4XXX)	+= snd-soc-src4xxx.o
 obj-$(CONFIG_SND_SOC_SRC4XXX_I2C)	+= snd-soc-src4xxx-i2c.o