linux-kernel - Re: [PATCH] ASoC: wm8962: Force suspend/resume during system suspend/resume

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Message-ID: <20200424104646.GC5850@sirena.org.uk>
Date:   Fri, 24 Apr 2020 11:46:46 +0100
From:   Mark Brown <broonie@...nel.org>
To:     Charles Keepax <ckeepax@...nsource.cirrus.com>
Cc:     Shengjiu Wang <shengjiu.wang@....com>, lgirdwood@...il.com,
        perex@...ex.cz, tiwai@...e.com, tglx@...utronix.de,
        allison@...utok.net, info@...ux.net, patches@...nsource.cirrus.com,
        alsa-devel@...a-project.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ASoC: wm8962: Force suspend/resume during system
 suspend/resume

On Fri, Apr 24, 2020 at 10:43:47AM +0000, Charles Keepax wrote:

> intended to put the CODEC into runtime suspend. I am guessing the
> reason you have problems is because of the driver doing its own
> pm_runtime operations in set_fll, which probably takes an extra
> reference preventing the power down. Is a more complex fix
> correcting the interaction with DAPM the correct solution here?

Or just updating the machine driver to turn off the FLL when shutting
down (or even when the device is idle in general).

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