Add Support for simultaneous use of JustBoom DAC and JustBoom Digi based Audio boards

johannesk · johannesk · commit 9bedc9eea0be · 2019-12-02T21:12:42.000+01:00
diff --git a/arch/arm/boot/dts/overlays/Makefile b/arch/arm/boot/dts/overlays/Makefile
@@ -86,6 +86,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
 	iqaudio-digi-wm8804-audio.dtbo \
 	irs1125.dtbo \
 	jedec-spi-nor.dtbo \
+	justboom-both.dtbo \
 	justboom-dac.dtbo \
 	justboom-digi.dtbo \
 	ltc294x.dtbo \
diff --git a/arch/arm/boot/dts/overlays/README b/arch/arm/boot/dts/overlays/README
@@ -1388,6 +1388,26 @@ Params: flash-spi<n>-<m>        Enables flash device on SPI<n>, CS#<m>.
                                 on SPI<n>, CS#<m>.
 
 
+Name:   justboom-both
+Info:   Simultaneous usage of an justboom-dac and justboom-digi based
+        card
+Load:   dtoverlay=justboom-both,<param>=<val>
+Params: 24db_digital_gain       Allow gain to be applied via the PCM512x codec
+                                Digital volume control. Enable with
+                                "dtoverlay=justboom-dac,24db_digital_gain"
+                                (The default behaviour is that the Digital
+                                volume control is limited to a maximum of
+                                0dB. ie. it can attenuate but not provide
+                                gain. For most users, this will be desired
+                                as it will prevent clipping. By appending
+                                the 24dB_digital_gain parameter, the Digital
+                                volume control will allow up to 24dB of
+                                gain. If this parameter is enabled, it is the
+                                responsibility of the user to ensure that
+                                the Digital volume control is set to a value
+                                that does not result in clipping/distortion!)
+
+
 Name:   justboom-dac
 Info:   Configures the JustBoom DAC HAT, Amp HAT, DAC Zero and Amp Zero audio
         cards
diff --git a/arch/arm/boot/dts/overlays/justboom-both-overlay.dts b/arch/arm/boot/dts/overlays/justboom-both-overlay.dts
@@ -0,0 +1,65 @@
+// SPDX-License-Identifier: GPL-2.0
+// Definitions for JustBoom Both (Digi+DAC)
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "brcm,bcm2835";
+
+	fragment@0 {
+		target = <&i2s>;
+		__overlay__ {
+			status = "okay";
+		};
+	};
+
+	fragment@1 {
+		target = <&i2c1>;
+		__overlay__ {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "okay";
+
+			wm8804@3b {
+				#sound-dai-cells = <0>;
+				compatible = "wlf,wm8804";
+				reg = <0x3b>;
+				PVDD-supply = <&vdd_3v3_reg>;
+				DVDD-supply = <&vdd_3v3_reg>;
+				status = "okay";
+			};
+		};
+	};
+
+	fragment@2 {
+		target = <&i2c1>;
+		__overlay__ {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "okay";
+
+			pcm5122@4d {
+				#sound-dai-cells = <0>;
+				compatible = "ti,pcm5122";
+				reg = <0x4d>;
+				AVDD-supply = <&vdd_3v3_reg>;
+				DVDD-supply = <&vdd_3v3_reg>;
+				CPVDD-supply = <&vdd_3v3_reg>;
+				status = "okay";
+			};
+		};
+	};
+
+	fragment@3 {
+		target = <&sound>;
+		frag3: __overlay__ {
+			compatible = "justboom,justboom-both";
+			i2s-controller = <&i2s>;
+			status = "okay";
+		};
+	};
+
+	__overrides__ {
+		24db_digital_gain = <&frag3>,"justboom,24db_digital_gain?";
+	};
+};
diff --git a/arch/arm/configs/bcm2709_defconfig b/arch/arm/configs/bcm2709_defconfig
@@ -982,6 +982,7 @@ CONFIG_SND_BCM2708_SOC_HIFIBERRY_AMP=m
 CONFIG_SND_BCM2708_SOC_RPI_CIRRUS=m
 CONFIG_SND_BCM2708_SOC_RPI_DAC=m
 CONFIG_SND_BCM2708_SOC_RPI_PROTO=m
+CONFIG_SND_BCM2708_SOC_JUSTBOOM_BOTH=m
 CONFIG_SND_BCM2708_SOC_JUSTBOOM_DAC=m
 CONFIG_SND_BCM2708_SOC_JUSTBOOM_DIGI=m
 CONFIG_SND_BCM2708_SOC_IQAUDIO_CODEC=m
diff --git a/arch/arm/configs/bcm2711_defconfig b/arch/arm/configs/bcm2711_defconfig
@@ -993,6 +993,7 @@ CONFIG_SND_BCM2708_SOC_HIFIBERRY_AMP=m
 CONFIG_SND_BCM2708_SOC_RPI_CIRRUS=m
 CONFIG_SND_BCM2708_SOC_RPI_DAC=m
 CONFIG_SND_BCM2708_SOC_RPI_PROTO=m
+CONFIG_SND_BCM2708_SOC_JUSTBOOM_BOTH=m
 CONFIG_SND_BCM2708_SOC_JUSTBOOM_DAC=m
 CONFIG_SND_BCM2708_SOC_JUSTBOOM_DIGI=m
 CONFIG_SND_BCM2708_SOC_IQAUDIO_CODEC=m
diff --git a/arch/arm/configs/bcmrpi_defconfig b/arch/arm/configs/bcmrpi_defconfig
@@ -974,6 +974,7 @@ CONFIG_SND_BCM2708_SOC_HIFIBERRY_AMP=m
 CONFIG_SND_BCM2708_SOC_RPI_CIRRUS=m
 CONFIG_SND_BCM2708_SOC_RPI_DAC=m
 CONFIG_SND_BCM2708_SOC_RPI_PROTO=m
+CONFIG_SND_BCM2708_SOC_JUSTBOOM_BOTH=m
 CONFIG_SND_BCM2708_SOC_JUSTBOOM_DAC=m
 CONFIG_SND_BCM2708_SOC_JUSTBOOM_DIGI=m
 CONFIG_SND_BCM2708_SOC_IQAUDIO_CODEC=m
diff --git a/arch/arm64/configs/bcm2711_defconfig b/arch/arm64/configs/bcm2711_defconfig
@@ -982,6 +982,7 @@ CONFIG_SND_BCM2708_SOC_HIFIBERRY_AMP=m
 CONFIG_SND_BCM2708_SOC_RPI_CIRRUS=m
 CONFIG_SND_BCM2708_SOC_RPI_DAC=m
 CONFIG_SND_BCM2708_SOC_RPI_PROTO=m
+CONFIG_SND_BCM2708_SOC_JUSTBOOM_BOTH=m
 CONFIG_SND_BCM2708_SOC_JUSTBOOM_DAC=m
 CONFIG_SND_BCM2708_SOC_JUSTBOOM_DIGI=m
 CONFIG_SND_BCM2708_SOC_IQAUDIO_CODEC=m
diff --git a/arch/arm64/configs/bcmrpi3_defconfig b/arch/arm64/configs/bcmrpi3_defconfig
@@ -814,6 +814,7 @@ CONFIG_SND_BCM2708_SOC_HIFIBERRY_DIGI=m
 CONFIG_SND_BCM2708_SOC_HIFIBERRY_AMP=m
 CONFIG_SND_BCM2708_SOC_RPI_DAC=m
 CONFIG_SND_BCM2708_SOC_RPI_PROTO=m
+CONFIG_SND_BCM2708_SOC_JUSTBOOM_BOTH=m
 CONFIG_SND_BCM2708_SOC_JUSTBOOM_DAC=m
 CONFIG_SND_BCM2708_SOC_JUSTBOOM_DIGI=m
 CONFIG_SND_BCM2708_SOC_IQAUDIO_CODEC=m
diff --git a/sound/soc/bcm/Kconfig b/sound/soc/bcm/Kconfig
@@ -102,6 +102,18 @@ config SND_BCM2708_SOC_RPI_PROTO
 	help
 	  Say Y or M if you want to add support for Audio Codec Board PROTO (WM8731).
 
+config SND_BCM2708_SOC_JUSTBOOM_BOTH
+	tristate "Support for simultaneous JustBoom Digi and JustBoom DAC"
+	depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
+	select SND_SOC_WM8804
+	select SND_SOC_PCM512x
+	help
+		Say Y or M if you want to add support for simultaneous
+		JustBoom Digi and JustBoom DAC.
+
+		This is not the right choice if you only have one but both of
+		these cards.
+
 config SND_BCM2708_SOC_JUSTBOOM_DAC
 	tristate "Support for JustBoom DAC"
 	depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
diff --git a/sound/soc/bcm/Makefile b/sound/soc/bcm/Makefile
@@ -16,6 +16,7 @@ snd-soc-hifiberry-dacplus-objs := hifiberry_dacplus.o
 snd-soc-hifiberry-dacplusadc-objs := hifiberry_dacplusadc.o
 snd-soc-hifiberry-dacplusadcpro-objs := hifiberry_dacplusadcpro.o
 snd-soc-hifiberry-dacplusdsp-objs := hifiberry_dacplusdsp.o
+snd-soc-justboom-both-objs := justboom-both.o
 snd-soc-justboom-dac-objs := justboom-dac.o
 snd-soc-rpi-cirrus-objs := rpi-cirrus.o
 snd-soc-rpi-proto-objs := rpi-proto.o
@@ -42,6 +43,7 @@ obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUS) += snd-soc-hifiberry-dacplus.o
 obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUSADC) += snd-soc-hifiberry-dacplusadc.o
 obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUSADCPRO) += snd-soc-hifiberry-dacplusadcpro.o
 obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUSDSP) += snd-soc-hifiberry-dacplusdsp.o
+obj-$(CONFIG_SND_BCM2708_SOC_JUSTBOOM_BOTH) += snd-soc-justboom-both.o
 obj-$(CONFIG_SND_BCM2708_SOC_JUSTBOOM_DAC) += snd-soc-justboom-dac.o
 obj-$(CONFIG_SND_BCM2708_SOC_RPI_CIRRUS) += snd-soc-rpi-cirrus.o
 obj-$(CONFIG_SND_BCM2708_SOC_RPI_PROTO) += snd-soc-rpi-proto.o
diff --git a/sound/soc/bcm/justboom-both.c b/sound/soc/bcm/justboom-both.c
