[alsa-devel] [PATCH v2 0/4] omap-abe-twl6040: Device tree support

Peter Ujfalusi peter.ujfalusi at ti.com
Wed May 16 13:57:01 CEST 2012


Changes since v1:
- Binding docukentation updated with available pins and connectors
- dts section for abe-twl6040 sound configuration has been changed

Instead of dai link pairs only the nodes probed via DT have phandle:
ti,mcpdm; ti,dmic, ti,twl6040.
The driver in turn is responsible to handle the provided information.
To provide dai link pairs (cpu dai - codec) we would need Linux (ASoC) specific
nodes in DT for the dmic codec and twl6040 ASoC codec driver.

If the DT section have ti,dmic phandle the ASoC machine driver will register the
device to load the ASoC dmic-codec runtime.

Example dts section for audio support (SDP4430):
sound {
	compatible = "ti,abe-twl6040";
	ti,model = "SDP4430";

	ti,jack-detection = <1>;
	ti,mclk-freq = <38400000>;

	ti,mcpdm = <&mcpdm>;
	ti,dmic = <&dmic>;

	ti,twl6040 = <&twl6040>;

	/* Audio routing */
	ti,audio-routing =
		"Headset Stereophone", "HSOL",
		"Headset Stereophone", "HSOR",
		"Earphone Spk", "EP",
		"Ext Spk", "HFL",
		"Ext Spk", "HFR",
		"Line Out", "AUXL",
		"Line Out", "AUXR",
		"Vibrator", "VIBRAL",
		"Vibrator", "VIBRAR",
		"HSMIC", "Headset Mic",
		"Headset Mic", "Headset Mic Bias",
		"MAINMIC", "Main Handset Mic",
		"Main Handset Mic", "Main Mic Bias",
		"SUBMIC", "Sub Handset Mic",
		"Sub Handset Mic", "Main Mic Bias",
		"AFML", "Line In",
		"AFMR", "Line In",
		"DMic", "Digital Mic",
		"Digital Mic", "Digital Mic1 Bias";

Peter Ujfalusi (4):
  ASoC: omap-abe-twl6040: Keep only one snd_soc_dai_link structure
  ASoC: omap-abe-twl6040: Move Digital Mic widget into dapm table
  ASoC: omap-abe-twl6040: Introduce driver data for runtime parameters
  ASoC: omap-abe-twl6040: Add device tree support

 .../devicetree/bindings/sound/omap-abe-twl6040.txt |   91 +++++++++
 sound/soc/omap/omap-abe-twl6040.c                  |  195 ++++++++++++++------
 2 files changed, 230 insertions(+), 56 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/sound/omap-abe-twl6040.txt


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