ASoC: rt5651: Rewrite jack-type detection

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We get the insertion event before the jack is fully inserted at which point
the second ring on a TRRS connector may short the 2nd ring and sleeve
contacts. Testing has shown that this short-circuit may happen as late
as 500ms after the insertion event, but it never lasts longer then 300ms.

This commit changes the detection algorithm to require 5 identical OVCD
values in a row at 100 ms intervals to fix the jack-type sometimes getting
mis-detected.

Tested-by: Carlo Caione <carlo@endlessm.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

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Hans de Goede 2018-03-04 15:35:57 +01:00 • committed by Mark Brown

parent 0fe9474598

commit ee68096826

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2 changed files with 70 additions and 42 deletions

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110

sound/soc/codecs/rt5651.c

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2

sound/soc/codecs/rt5651.h

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