Add clock changes and mute gpios (raspberrypi#1938)

Also improve code style and adhere to ALSA coding conventions.

Signed-off-by: Baswaraj K <[email protected]>
Reviewed-by: Vijay Kumar B. <[email protected]>
Reviewed-by: Raashid Muhammed <[email protected]>

Author: babuenir

arch/arm/boot/dts/overlays/README

@@ -323,6 +323,9 @@ Params: 24db_digital_gain       Allow gain to be applied via the PCM512x codec
                                 responsibility of the user to ensure that
                                 the Digital volume control is set to a value
                                 that does not result in clipping/distortion!)
+        glb_mclk                This option is only with Kali board. If enabled,
+                                MCLK for Kali is used and PLL is disabled for
+                                better voice quality. (default Off)
 
 
 Name:   at86rf233

arch/arm/boot/dts/overlays/allo-piano-dac-plus-pcm512x-audio-overlay.dts

@@ -19,13 +19,13 @@
 			#size-cells = <0>;
 			status = "okay";
 
-			pcm5122_4c: pcm5122@4c {
+			allo_pcm5122_4c: pcm5122@4c {
 				#sound-dai-cells = <0>;
 				compatible = "ti,pcm5122";
 				reg = <0x4c>;
 				status = "okay";
 			};
-			pcm5122_4d: pcm5122@4d {
+			allo_pcm5122_4d: pcm5122@4d {
 				#sound-dai-cells = <0>;
 				compatible = "ti,pcm5122";
 				reg = <0x4d>;
@@ -38,14 +38,18 @@
 		target = <&sound>;
 		piano_dac: __overlay__ {
 			compatible = "allo,piano-dac-plus";
-			audio-codec = <&pcm5122_4c &pcm5122_4d>;
+			audio-codec = <&allo_pcm5122_4c &allo_pcm5122_4d>;
 			i2s-controller = <&i2s>;
+			mute1-gpios = <&gpio 6 1>;
+			mute2-gpios = <&gpio 25 1>;
 			status = "okay";
 		};
 	};
 
 	__overrides__ {
 		24db_digital_gain =
-			<&piano_dac>,"piano,24db_digital_gain?";
+			<&piano_dac>,"allo,24db_digital_gain?";
+		glb_mclk =
+			<&piano_dac>,"allo,glb_mclk?";
 	};
 };

arch/arm/configs/bcm2709_defconfig

@@ -885,6 +885,7 @@ CONFIG_SND_BCM2708_SOC_DIONAUDIO_LOCO=m
 CONFIG_SND_BCM2708_SOC_DIONAUDIO_LOCO_V2=m
 CONFIG_SND_BCM2708_SOC_ALLO_BOSS_DAC=m
 CONFIG_SND_BCM2708_SOC_ALLO_PIANO_DAC=m
+CONFIG_SND_BCM2708_SOC_ALLO_PIANO_DAC_PLUS=m
 CONFIG_SND_BCM2708_SOC_FE_PI_AUDIO=m
 CONFIG_SND_PISOUND=m
 CONFIG_SND_SOC_ADAU1701=m

arch/arm/configs/bcmrpi_defconfig

@@ -876,7 +876,9 @@ CONFIG_SND_AUDIOINJECTOR_OCTO_SOUNDCARD=m
 CONFIG_SND_DIGIDAC1_SOUNDCARD=m
 CONFIG_SND_BCM2708_SOC_DIONAUDIO_LOCO=m
 CONFIG_SND_BCM2708_SOC_DIONAUDIO_LOCO_V2=m
+CONFIG_SND_BCM2708_SOC_ALLO_BOSS_DAC=m
 CONFIG_SND_BCM2708_SOC_ALLO_PIANO_DAC=m
+CONFIG_SND_BCM2708_SOC_ALLO_PIANO_DAC_PLUS=m
 CONFIG_SND_BCM2708_SOC_FE_PI_AUDIO=m
 CONFIG_SND_PISOUND=m
 CONFIG_SND_SOC_ADAU1701=m