linux-kernel - Re: [PATCH] ASoC: da7219: Fix pole orientation detection on OMTP headsets when playing music

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Date:   Tue, 31 Jan 2023 12:08:53 +0000
From:   Mark Brown <broonie@...nel.org>
To:     Guenter Roeck <linux@...ck-us.net>
Cc:     David Rau <david.rau.zg@...esas.com>,
        "perex@...ex.cz" <perex@...ex.cz>,
        "lgirdwood@...il.com" <lgirdwood@...il.com>,
        "tiwai@...e.com" <tiwai@...e.com>,
        "support.opensource@...semi.com" <support.opensource@...semi.com>,
        "alsa-devel@...a-project.org" <alsa-devel@...a-project.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] ASoC: da7219: Fix pole orientation detection on OMTP
 headsets when playing music

On Mon, Jan 30, 2023 at 10:16:06PM -0800, Guenter Roeck wrote:
> On 1/30/23 19:58, David Rau wrote:

> > Thanks for the kind feedback.
> > Would you please let me know what kinds of environment such error appears you ever meet?
> > Ex: da7219_aad->gnd_switch_delay = ?

> We are seeing the problem on various Chromebooks.

> Never mind, though. I really don't have time to keep arguing about this.
> I would have assumed that it is obvious that a long msleep() in an
> interrupt handler is not appropriate, but obviously I was wrong.

This is a threaded interrupt handler so it's a bit less clear that it's
meaningfully different to just disabling the interrupt for debounce or
whatever.  Not to say it's ideal.

> I'll see if I can implement a downstream fix.

If you implement something I don't see a reason not to post it upstream.

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