ASoC: audio-graph-card: add widgets and routing for external amplifier support

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It's very common that audio card has a machine level amplifier which is
controlled by GPIO.  The patch adds DAPM widgets and routing support
into audio-graph-card driver, and creates an output driver widget with
event to control the amplifier via GPIO.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

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Shawn Guo 2017-06-29 21:26:38 +08:00 • committed by Mark Brown

parent a0c683d734

commit f986907c92

1 changed files with 47 additions and 1 deletions

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sound/soc/generic/audio-graph-card.c

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