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

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Message-ID: <fc19ccbe-2e06-42f5-b968-446f8c08ec22@linux.intel.com>
Date:   Tue, 5 Dec 2023 10:12:23 -0600
From:   Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
To:     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>,
        Mark Brown <broonie@...nel.org>
Cc:     linux-kernel@...r.kernel.org, alsa-devel@...a-project.org
Subject: Re: [PATCH 2/2] ALSA: hda/tas2563: Add tas2563 HDA driver


>>>> +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?

if the inspiration was the tas2781, then see below it does have a
RUNTIME_PM_OPS line as well as runtime_suspend/resume routines.

static const struct dev_pm_ops tas2781_hda_pm_ops = {
	RUNTIME_PM_OPS(tas2781_runtime_suspend, tas2781_runtime_resume, NULL)
	SYSTEM_SLEEP_PM_OPS(tas2781_system_suspend, tas2781_system_resume)
};