ASoC: sun4i-codec: Add support for A31 board level audio routing

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The A31 SoC's codec has various inputs, outputs and microphone bias
supplies. These can be routed on the board in different ways, such as:

  - HPCOM may be connected to have the headphone DC coupled.

  - Microphones all use the MBIAS main microphone supply or one mic may
    use the HBIAS supply, which supports headset detection and buttons.

  - Line Out may be routed to an audio jack, or an onboard speaker amp
    with power controls.

Add support for specifying the audio routes in the device tree.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

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This commit is contained in:

Chen-Yu Tsai 2016-11-03 15:55:53 +08:00 • committed by Mark Brown

parent ecd5cdb4fd

commit 300a18d13f

2 changed files with 52 additions and 2 deletions

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33

Documentation/devicetree/bindings/sound/sun4i-codec.txt

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21

sound/soc/sunxi/sun4i-codec.c

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