This patch adds support to allow audio routing via Device Tree. This is mostly used to specify MICBIAS and other power supplies relation.
Signed-off-by: Srinivas Kandagatla srinivas.kandagatla@linaro.org --- .../devicetree/bindings/sound/qcom,apq8016-sbc.txt | 30 ++++++++++++++++++++++ sound/soc/qcom/apq8016_sbc.c | 9 +++++++ 2 files changed, 39 insertions(+)
diff --git a/Documentation/devicetree/bindings/sound/qcom,apq8016-sbc.txt b/Documentation/devicetree/bindings/sound/qcom,apq8016-sbc.txt index 4812936..d9d8635 100644 --- a/Documentation/devicetree/bindings/sound/qcom,apq8016-sbc.txt +++ b/Documentation/devicetree/bindings/sound/qcom,apq8016-sbc.txt @@ -16,6 +16,24 @@ Required properties: * "spkr-iomux" - qcom,model : Name of the sound card.
+- qcom,audio-routing : A list of the connections between audio components. + Each entry is a pair of strings, the first being the + connection's sink, the second being the connection's + source. Valid names could be power supplies, MicBias + of msm8x16_wcd codec and the jacks on the board: + + Power supplies: + * MIC BIAS External1 + * MIC BIAS External2 + * MIC BIAS Internal1 + * MIC BIAS Internal2 + + Board connectors: + * Headset Mic + * Secondary Mic", + * DMIC + * Ext Spk + Dai-link subnode properties and subnodes:
Required dai-link subnodes: @@ -37,6 +55,18 @@ sound: sound { reg-names = "mic-iomux", "spkr-iomux"; qcom,model = "DB410c";
+ qcom,audio-routing = + "MIC BIAS External1", "Handset Mic", + "MIC BIAS Internal2", "Headset Mic", + "MIC BIAS External1", "Secondary Mic", + "AMIC1", "MIC BIAS External1", + "AMIC2", "MIC BIAS Internal2", + "AMIC3", "MIC BIAS External1", + "DMIC1", "MIC BIAS Internal1", + "MIC BIAS Internal1", "Digital Mic1", + "DMIC2", "MIC BIAS Internal1", + "MIC BIAS Internal1", "Digital Mic2"; + /* I2S - Internal codec */ internal-dai-link@0 { cpu { /* PRIMARY */ diff --git a/sound/soc/qcom/apq8016_sbc.c b/sound/soc/qcom/apq8016_sbc.c index 5c3ccf3..07f91e9 100644 --- a/sound/soc/qcom/apq8016_sbc.c +++ b/sound/soc/qcom/apq8016_sbc.c @@ -85,6 +85,15 @@ static struct apq8016_sbc_data *apq8016_sbc_parse_of(struct snd_soc_card *card) return ERR_PTR(ret); }
+ /* DAPM routes */ + if (of_property_read_bool(node, "qcom,audio-routing")) { + ret = snd_soc_of_parse_audio_routing(card, + "qcom,audio-routing"); + if (ret) + return ERR_PTR(ret); + } + + /* Populate links */ num_links = of_get_child_count(node);