linux-kernel - [PATCH 1/3] ASoC: q6asm-dai: dt-bindings: Add support to compress dais

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Mon,  3 Sep 2018 13:34:53 +0100
From:   Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
To:     broonie@...nel.org, alsa-devel@...a-project.org, robh+dt@...nel.org
Cc:     linux-kernel@...r.kernel.org, vkoul@...nel.org,
        bgoswami@...eaurora.org, rohitkr@...eaurora.org,
        lgirdwood@...il.com, tiwai@...e.com, perex@...ex.cz,
        devicetree@...r.kernel.org, mark.rutland@....com,
        Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
Subject: [PATCH 1/3] ASoC: q6asm-dai: dt-bindings: Add support to compress dais

This patch adds board specific bindings required for dais, In particular
for compressed dais and dai direction.

Board specific setup involves setting up some of dais as compressed dais
and also specify direction of any dai. Some of the dais might only
support capture/playback depending on the board level wiring.

These two new dt properties will allow such flexibilty at board level dts.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
---
 .../devicetree/bindings/sound/qcom,q6asm.txt  | 27 +++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/Documentation/devicetree/bindings/sound/qcom,q6asm.txt b/Documentation/devicetree/bindings/sound/qcom,q6asm.txt
index f9c7bd8c1bc0..9f5378c51686 100644
--- a/Documentation/devicetree/bindings/sound/qcom,q6asm.txt
+++ b/Documentation/devicetree/bindings/sound/qcom,q6asm.txt
@@ -27,6 +27,28 @@ used by the apr service device.
 	Value type: <u32>
 	Definition: Must be 1
 
+== ASM DAI is subnode of "dais" and represent a dai, it includes board specific
+configuration of each dai. Must contain the following properties.
+
+- reg
+	Usage: required
+	Value type: <u32>
+	Definition: Must be dai id
+
+- direction:
+	Usage: Required for Compress offload dais
+	Value type: <u32>
+	Definition: Specifies the direction of the dai stream
+			0 for both tx and rx
+			1 for only tx (Capture/Encode)
+			2 for only rx (Playback/Decode)
+
+- is-compress-dai:
+	Usage: Required for Compress offload dais
+	Value type: <boolean>
+	Definition: present for Compress offload dais
+
+
 = EXAMPLE
 
 q6asm@7 {
@@ -35,5 +57,10 @@ q6asm@7 {
 	q6asmdai: dais {
 		compatible = "qcom,q6asm-dais";
 		#sound-dai-cells = <1>;
+		mm@0 {
+			reg = <0>;
+			direction = <2>;
+			is-compress-dai;
+		};
 	};
 };
-- 
2.18.0