Add the Infineon PEB2466 codec support

Merge series from Herve Codina <herve.codina@bootlin.com>:

The Infineon PEB2466 codec is a programmable DSP-based four channels
codec with filters capabilities.
It also provides signals as GPIOs.

Documentation/devicetree/bindings/sound/infineon,peb2466.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/infineon,peb2466.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Infineon PEB2466 codec
+
+maintainers:
+  - Herve Codina <herve.codina@bootlin.com>
+
+description: |
+  The Infineon PEB2466 codec is a programmable DSP-based four channels codec
+  with filters capabilities.
+
+  The time-slots used by the codec must be set and so, the properties
+  'dai-tdm-slot-num', 'dai-tdm-slot-width', 'dai-tdm-slot-tx-mask' and
+  'dai-tdm-slot-rx-mask' must be present in the sound card node for sub-nodes
+  that involve the codec. The codec uses one 8bit time-slot per channel.
+  'dai-tdm-tdm-slot-with' must be set to 8.
+
+  The PEB2466 codec also supports 28 gpios (signaling pins).
+
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml
+  - $ref: dai-common.yaml#
+
+properties:
+  compatible:
+    const: infineon,peb2466
+
+  reg:
+    description:
+      SPI device address.
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: Master clock
+
+  clock-names:
+    items:
+      - const: mclk
+
+  spi-max-frequency:
+    maximum: 8192000
+
+  reset-gpios:
+    description:
+      GPIO used to reset the device.
+    maxItems: 1
+
+  firmware-name:
+    $ref: /schemas/types.yaml#/definitions/string
+    description:
+      Filters coefficients file to load. If this property is omitted, internal
+      filters are disabled.
+
+  '#sound-dai-cells':
+    const: 0
+
+  '#gpio-cells':
+    const: 2
+
+  gpio-controller: true
+
+required:
+  - compatible
+  - reg
+  - '#sound-dai-cells'
+  - gpio-controller
+  - '#gpio-cells'
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+    spi {
+        #address-cells = <1>;
+        #size-cells = <0>;
+        audio-codec@0 {
+            compatible = "infineon,peb2466";
+            reg = <0>;
+            spi-max-frequency = <8192000>;
+            reset-gpios = <&gpio 10 GPIO_ACTIVE_LOW>;
+            #sound-dai-cells = <0>;
+            gpio-controller;
+            #gpio-cells = <2>;
+        };
+    };

MAINTAINERS

@@ -10159,6 +10159,13 @@ L:	linux-iio@vger.kernel.org
 S:	Maintained
 F:	drivers/iio/pressure/dps310.c
 
+INFINEON PEB2466 ASoC CODEC
+M:	Herve Codina <herve.codina@bootlin.com>
+L:	alsa-devel@alsa-project.org (moderated for non-subscribers)
+S:	Maintained
+F:	Documentation/devicetree/bindings/sound/infineon,peb2466.yaml
+F:	sound/soc/codecs/peb2466.c
+
 INFINIBAND SUBSYSTEM
 M:	Jason Gunthorpe <jgg@nvidia.com>
 M:	Leon Romanovsky <leonro@nvidia.com>

sound/soc/codecs/Kconfig

@@ -167,6 +167,7 @@ config SND_SOC_ALL_CODECS
 	imply SND_SOC_PCM5102A
 	imply SND_SOC_PCM512x_I2C
 	imply SND_SOC_PCM512x_SPI
+	imply SND_SOC_PEB2466
 	imply SND_SOC_RK3328
 	imply SND_SOC_RK817
 	imply SND_SOC_RT274
@@ -1243,6 +1244,17 @@ config SND_SOC_PCM512x_SPI
 	select SND_SOC_PCM512x
 	select REGMAP_SPI
 
+config SND_SOC_PEB2466
+	tristate "Infineon PEB2466 quad PCM codec"
+	depends on SPI
+	select REGMAP_SPI
+	help
+	  Enable support for the Infineon PEB2466 quad PCM codec,
+	  also named SICOFI 4-uC.
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called snd-soc-peb2466.
+
 config SND_SOC_RK3328
 	tristate "Rockchip RK3328 audio CODEC"
 	select REGMAP_MMIO

sound/soc/codecs/Makefile

@@ -188,6 +188,7 @@ snd-soc-pcm5102a-objs := pcm5102a.o
 snd-soc-pcm512x-objs := pcm512x.o
 snd-soc-pcm512x-i2c-objs := pcm512x-i2c.o
 snd-soc-pcm512x-spi-objs := pcm512x-spi.o
+snd-soc-peb2466-objs := peb2466.o
 snd-soc-rk3328-objs := rk3328_codec.o
 snd-soc-rk817-objs := rk817_codec.o
 snd-soc-rl6231-objs := rl6231.o
@@ -550,6 +551,7 @@ obj-$(CONFIG_SND_SOC_PCM5102A)	+= snd-soc-pcm5102a.o
 obj-$(CONFIG_SND_SOC_PCM512x)	+= snd-soc-pcm512x.o
 obj-$(CONFIG_SND_SOC_PCM512x_I2C)	+= snd-soc-pcm512x-i2c.o
 obj-$(CONFIG_SND_SOC_PCM512x_SPI)	+= snd-soc-pcm512x-spi.o
+obj-$(CONFIG_SND_SOC_PEB2466)	+= snd-soc-peb2466.o
 obj-$(CONFIG_SND_SOC_RK3328)	+= snd-soc-rk3328.o
 obj-$(CONFIG_SND_SOC_RK817)	+= snd-soc-rk817.o
 obj-$(CONFIG_SND_SOC_RL6231)	+= snd-soc-rl6231.o