ASoC: wm_adsp: Support acknowledged controls

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This patch handles publishing acknowledged controls through ALSA.
These controls allow user-side to send events to the firmware and
wait for the firmware to acknowledge it.

Note that although acked controls only operate in the direction
host->firmware, and therefore they are write-only as seen from user-
side code, we have to make them readable to account for all the code
out there that assumes that ALSA controls are always readable (amixer
for example.)

Signed-off-by: Richard Fitzgerald <rf@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

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Richard Fitzgerald 2016-11-09 17:14:18 +00:00 • committed by Mark Brown

parent 8eb084d066

commit a23ebba845

2 changed files with 82 additions and 8 deletions

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91

sound/soc/codecs/wm_adsp.c

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1

sound/soc/codecs/wmfw.h

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