[alsa-devel] [PATCH 1/5] ASoC: audio-graph-card: merge audio-graph-scu-card on Doc

[Kuninori Morimoto]

From: Kuninori Morimoto <kuninori.morimoto.gx at renesas.com>

audio-graph-card and audio-graph-scu-card are very similar driver,
but the former is supporting normal sound card,
the latter is supporting DPCM sound card.

We couldn't use normal sound and DPCM sound in same sound card by
audio-graph-card.
This patch merges both feature into it on Documentation.
Now we can use both feature on same driver.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx at renesas.com>
---
 .../devicetree/bindings/sound/audio-graph-card.txt | 205 +++++++++++++++++++++
 1 file changed, 205 insertions(+)

diff --git a/Documentation/devicetree/bindings/sound/audio-graph-card.txt b/Documentation/devicetree/bindings/sound/audio-graph-card.txt
index 7e63e53..26968261 100644
--- a/Documentation/devicetree/bindings/sound/audio-graph-card.txt
+++ b/Documentation/devicetree/bindings/sound/audio-graph-card.txt
@@ -32,7 +32,9 @@ Required properties:
 Optional properties:
 - pa-gpios: GPIO used to control external amplifier.
 
+-----------------------
 Example: Single DAI case
+-----------------------
 
 	sound_card {
 		compatible = "audio-graph-card";
@@ -61,7 +63,9 @@ Example: Single DAI case
 		};
 	};
 
+-----------------------
 Example: Multi DAI case
+-----------------------
 
 	sound-card {
 		compatible = "audio-graph-card";
@@ -130,3 +134,204 @@ Example: Multi DAI case
 		};
 	};
 
+
+-----------------------
+Example: Sampling Rate Conversion
+-----------------------
+
+	sound_card {
+		compatible = "audio-graph-card";
+
+		label = "sound-card";
+		prefix = "codec";
+		routing = "codec Playback", "DAI0 Playback",
+			  "DAI0 Capture",   "codec Capture";
+		convert-rate = <48000>;
+
+		dais = <&cpu_port>;
+	};
+
+	audio-codec {
+		...
+		port {
+			codec_endpoint: endpoint {
+				remote-endpoint = <&cpu_endpoint>;
+			};
+		};
+	};
+
+	dai-controller {
+		...
+		cpu_port: port {
+			cpu_endpoint: endpoint {
+				remote-endpoint = <&codec_endpoint>;
+
+				dai-format = "left_j";
+				...
+			};
+		};
+	};
+
+-----------------------
+Example: 2 CPU 1 Codec (Mixing)
+-----------------------
+
+	sound_card {
+		compatible = "audio-graph-card";
+
+		label = "sound-card";
+		routing = "codec Playback", "DAI0 Playback",
+			  "codec Playback", "DAI1 Playback",
+			  "DAI0 Capture",   "codec Capture";
+
+		dais = <&cpu_port>;
+	};
+
+	audio-codec {
+		...
+
+		audio-graph-card,prefix = "codec";
+		audio-graph-card,convert-rate = <48000>;
+		port {
+			reg = <0>;
+			codec_endpoint0: endpoint at 0 {
+				remote-endpoint = <&cpu_endpoint0>;
+			};
+			codec_endpoint1: endpoint at 1 {
+				remote-endpoint = <&cpu_endpoint1>;
+			};
+		};
+	};
+
+	dai-controller {
+		...
+		cpu_port: port {
+			cpu_endpoint0: endpoint at 0 {
+				remote-endpoint = <&codec_endpoint0>;
+
+				dai-format = "left_j";
+				...
+			};
+			cpu_endpoint1: endpoint at 1 {
+				remote-endpoint = <&codec_endpoint1>;
+
+				dai-format = "left_j";
+				...
+			};
+		};
+	};
+
+-----------------------
+Example: Multi DAI with DPCM
+-----------------------
+
+	CPU0 ------ ak4613
+	CPU1 ------ HDMI
+	CPU2 ------ PCM3168A-p	/* DPCM 1ch/2ch */
+	CPU3 --/		/* DPCM 3ch/4ch */
+	CPU4 --/		/* DPCM 5ch/6ch */
+	CPU5 --/		/* DPCM 7ch/8ch */
+	CPU6 ------ PCM3168A-c
+
+	sound_card: sound {
+		compatible = "audio-graph-card";
+
+		label = "sound-card";
+
+		routing =	"pcm3168a Playback", "DAI2 Playback",
+				"pcm3168a Playback", "DAI3 Playback",
+				"pcm3168a Playback", "DAI4 Playback",
+				"pcm3168a Playback", "DAI5 Playback";
+
+		dais = <&snd_port0	/* ak4613 */
+			&snd_port1	/* HDMI0  */
+			&snd_port2	/* pcm3168a playback */
+			&snd_port3	/* pcm3168a capture  */
+			>;
+	};
+
+	ak4613: codec at 10 {
+		...
+		port {
+			ak4613_endpoint: endpoint {
+				remote-endpoint = <&rsnd_endpoint0>;
+			};
+		};
+	};
+
+	pcm3168a: audio-codec at 44 {
+		...
+		audio-graph-card,prefix = "pcm3168a";
+		audio-graph-card,convert-channels = <8>; /* TDM Split */
+		ports {
+			port at 0 {
+				reg = <0>;
+				pcm3168a_endpoint_p1: endpoint at 1 {
+					remote-endpoint = <&rsnd_endpoint2>;
+					...
+				};
+				pcm3168a_endpoint_p2: endpoint at 2 {
+					remote-endpoint = <&rsnd_endpoint3>;
+					...
+				};
+				pcm3168a_endpoint_p3: endpoint at 3 {
+					remote-endpoint = <&rsnd_endpoint4>;
+					...
+				};
+				pcm3168a_endpoint_p4: endpoint at 4 {
+					remote-endpoint = <&rsnd_endpoint5>;
+					...
+				};
+			};
+			port at 1 {
+				reg = <1>;
+				pcm3168a_endpoint_c: endpoint {
+					remote-endpoint = <&rsnd_endpoint6>;
+					...
+				};
+			};
+		};
+	};
+
+	&sound {
+		ports {
+			snd_port0: port at 0 {
+				rsnd_endpoint0: endpoint {
+					remote-endpoint = <&ak4613_endpoint>;
+					...
+				};
+			};
+			snd_port1: port at 1 {
+				rsnd_endpoint1: endpoint {
+					remote-endpoint = <&dw_hdmi0_snd_in>;
+					...
+				};
+			};
+			snd_port2: port at 2 {
+				#address-cells = <1>;
+				#size-cells = <0>;
+				rsnd_endpoint2: endpoint at 2 {
+					remote-endpoint = <&pcm3168a_endpoint_p1>;
+					...
+				};
+				rsnd_endpoint3: endpoint at 3 {
+					remote-endpoint = <&pcm3168a_endpoint_p2>;
+					...
+				};
+				rsnd_endpoint4: endpoint at 4 {
+					remote-endpoint = <&pcm3168a_endpoint_p3>;
+					...
+				};
+				rsnd_endpoint5: endpoint at 5 {
+					remote-endpoint = <&pcm3168a_endpoint_p4>;
+					...
+				};
+			};
+			snd_port3: port at 6 {
+				rsnd_endpoint6: endpoint {
+					remote-endpoint = <&pcm3168a_endpoint_c>;
+					...
+				};
+			};
+		};
+	};
-- 
2.7.4