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ASoC: ux500: Fix MSP stream lifecycle handling

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The trigger stop path drops the direction busy flag even though ALSA
still owns the stream until shutdown. A later trigger cannot reliably
restart it, shutdown may leave the block configured, and a second
stream may overwrite shared duplex configuration.

Keep configured and running directions as separate state. Program
shared settings only for the first direction, require a compatible
configuration for the other half of a duplex stream, and enable the
frame generator only while a provider stream is running. Also fix the
RX-disable direction test and preserve the other direction multichannel
setup.

Fixes: 3592b7f69a ("ASoC: Ux500: Add MSP I2S-driver")
Assisted-by: LLM
Signed-off-by: Linus Walleij <linusw@kernel.org>
Link: https://patch.msgid.link/20260902-ux500-msp-fixes-v2-1-4b60b002d55a@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
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Linus Walleij 2026-09-02 09:55:51 +02:00 • committed by Mark Brown
commit c37ba8fe00
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3 changed files with 149 additions and 46 deletions
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