linux-kernel - Re: [RFC] ASoC: codecs: msm8916-wcd-analog: use btn0 released detection

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Message-ID: <20170919121147.wtpebx6p377cctvc@sirena.co.uk>
Date:   Tue, 19 Sep 2017 13:11:47 +0100
From:   Mark Brown <broonie@...nel.org>
To:     Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
Cc:     Damien Riegel <damien.riegel@...oirfairelinux.com>,
        alsa-devel@...a-project.org, linux-kernel@...r.kernel.org,
        Liam Girdwood <lgirdwood@...il.com>,
        Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>
Subject: Re: [RFC] ASoC: codecs: msm8916-wcd-analog: use btn0 released
 detection

On Mon, Sep 18, 2017 at 10:08:04AM +0100, Srinivas Kandagatla wrote:
> On 13/09/17 21:43, Damien Riegel wrote:
> > msm8916-wcd-analog uses button0 to differentiate between headphone and
> > headset. Under some circumstances, button pressed and released
> > interrupts are not fired as the driver expects it.

> This is what we need to understand to find a right solution,
> I would like to understand on what is the difference in the hw layout.

These sorts of problems can also occur because of differences in test
process - pressure at different angles, different speeds of insertion
and a million other things.

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