linux-kernel - Re: [PATCH 2/2] ALSA: hda/tas2563: Add tas2563 HDA driver

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Message-ID: <aecaaaff-9a4c-4d1f-8457-5afdb7803d94@sirena.org.uk>
Date:   Tue, 5 Dec 2023 16:13:55 +0000
From:   Mark Brown <broonie@...nel.org>
To:     Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
Cc:     Gergo Koteles <soyer@....hu>, Shenghao Ding <shenghao-ding@...com>,
        Kevin Lu <kevin-lu@...com>, Baojun Xu <baojun.xu@...com>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>,
        Liam Girdwood <lgirdwood@...il.com>,
        linux-kernel@...r.kernel.org, alsa-devel@...a-project.org
Subject: Re: [PATCH 2/2] ALSA: hda/tas2563: Add tas2563 HDA driver

On Tue, Dec 05, 2023 at 10:01:08AM -0600, Pierre-Louis Bossart wrote:

> >>> +static const struct dev_pm_ops tas2563_hda_pm_ops = {
> >>> +	SYSTEM_SLEEP_PM_OPS(tas2563_system_suspend, tas2563_system_resume)

> >> where's the pm_runtime stuff?

> > The amp stores its state in software shutdown mode.
> > The tas2563_hda_playback_hook wakes/shutdowns the amp, not the
> > pm_runtime.

> My point was that you have all these pm_runtime_ calls in the code, but
> nothing that provides pm_runtime suspend-resume functions so not sure
> what exactly the result is?

It *could* be ACPI doing something I guess...

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