ASoC: hdmi-codec: only startup/shutdown on supported streams

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[ Upstream commit e041a2a550 ]

Currently only one stream is supported. This isn't usally a problem
until you have a multi codec audio card. Because the audio card will run
startup and shutdown on both capture and playback streams. So if your
hdmi-codec only support either playback or capture. Then ALSA can't open
for playback and capture.

This patch will ignore if startup and shutdown are called with a non
supported stream. Thus, allowing an audio card like this:

           +-+
 cpu1 <--@-| |-> codec1 (HDMI-CODEC)
           | |<- codec2 (NOT HDMI-CODEC)
           +-+

Signed-off-by: Emil Svendsen <emas@bang-olufsen.dk>
Link: https://lore.kernel.org/r/20230309065432.4150700-2-emas@bang-olufsen.dk
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

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Emil Abildgaard Svendsen 2023-03-09 06:54:41 +00:00 • committed by Greg Kroah-Hartman

parent 6f70064ada

commit 84c02ce466

1 changed files with 11 additions and 0 deletions

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sound/soc/codecs/hdmi-codec.c

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