From e2516e3a7d2244f74c3267be8bdc143448c278be Mon Sep 17 00:00:00 2001
From: Matt Flax <flatmax@flatmax.org>
Date: Tue, 28 Aug 2018 18:42:13 +1000
Subject: [PATCH] Add support for audioinjector.net ultra soundcard.
 (#2664)

Uses the simple-audio-card ALSA machine driver. Sets up the machine
driver in the device tree overlay file. The overlays/Makefile is
altered to add the audioinjector-ultra.dtbo dtb overlay.

Adds CONFIG_SND_SOC_CS4265 to the defconfig files.

Signed-off-by: Matt Flax <flatmax@flatmax.org>
---
 arch/arm/boot/dts/overlays/Makefile           |  1 +
 arch/arm/boot/dts/overlays/README             |  6 ++
 .../overlays/audioinjector-ultra-overlay.dts  | 71 +++++++++++++++++++
 5 files changed, 80 insertions(+)
 create mode 100644 arch/arm/boot/dts/overlays/audioinjector-ultra-overlay.dts

--- a/arch/arm/boot/dts/overlays/Makefile
+++ b/arch/arm/boot/dts/overlays/Makefile
@@ -15,6 +15,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
 	applepi-dac.dtbo \
 	at86rf233.dtbo \
 	audioinjector-addons.dtbo \
+	audioinjector-ultra.dtbo \
 	audioinjector-wm8731-audio.dtbo \
 	audremap.dtbo \
 	balena-fin.dtbo \
--- a/arch/arm/boot/dts/overlays/README
+++ b/arch/arm/boot/dts/overlays/README
@@ -389,6 +389,12 @@ Params: non-stop-clocks         Keeps th
                                 is paused or stopped (default off)
 
 
+Name:   audioinjector-ultra
+Info:   Configures the audioinjector.net ultra soundcard
+Load:   dtoverlay=audioinjector-ultra
+Params: <None>
+
+
 Name:   audioinjector-wm8731-audio
 Info:   Configures the audioinjector.net audio add on soundcard
 Load:   dtoverlay=audioinjector-wm8731-audio
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/audioinjector-ultra-overlay.dts
@@ -0,0 +1,71 @@
+// Definitions for audioinjector.net audio add on soundcard
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "brcm,bcm2708";
+
+	fragment@0 {
+		target = <&i2s>;
+		__overlay__ {
+			status = "okay";
+		};
+	};
+
+	fragment@1 {
+		target = <&i2c1>;
+		__overlay__ {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "okay";
+
+			cs4265: cs4265@4e {
+				#sound-dai-cells = <0>;
+				compatible = "cirrus,cs4265";
+				reg = <0x4e>;
+				reset-gpios = <&gpio 5 0>;
+				status = "okay";
+			};
+		};
+	};
+
+	fragment@2 {
+		target = <&sound>;
+		__overlay__ {
+			compatible = "simple-audio-card";
+			i2s-controller = <&i2s>;
+			status = "okay";
+
+			simple-audio-card,name = "audioinjector-ultra";
+
+			simple-audio-card,widgets =
+				"Line", "OUTPUTS",
+				"Line", "INPUTS";
+
+			simple-audio-card,routing =
+				"OUTPUTS","LINEOUTL",
+				"OUTPUTS","LINEOUTR",
+				"OUTPUTS","SPDIFOUT",
+				"LINEINL","INPUTS",
+				"LINEINR","INPUTS",
+				"MICL","INPUTS",
+				"MICR","INPUTS";
+
+			simple-audio-card,format = "i2s";
+
+			simple-audio-card,bitclock-master = <&sound_master>;
+			simple-audio-card,frame-master = <&sound_master>;
+
+			simple-audio-card,cpu {
+				sound-dai = <&i2s>;
+				dai-tdm-slot-num = <2>;
+				dai-tdm-slot-width = <32>;
+			};
+
+			sound_master: simple-audio-card,codec {
+				sound-dai = <&cs4265>;
+				system-clock-frequency = <12288000>;
+			};
+		};
+	};
+};