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From: Takashi Iwai <tiwai@suse.de>
To: Vitaly Rodionov <vitalyr@opensource.cirrus.com>
Cc: Jaroslav Kysela <perex@perex.cz>, Takashi Iwai <tiwai@suse.com>,
	<alsa-devel@alsa-project.org>, <patches@opensource.cirrus.com>,
	<linux-kernel@vger.kernel.org>,
	Stefan Binding <sbinding@opensource.cirrus.com>
Subject: Re: [PATCH 2/2] ALSA: hda/cs8409: Prevent pops and clicks during reboot
Date: Tue, 17 Aug 2021 14:16:53 +0200	[thread overview]
Message-ID: <s5hpmuce05m.wl-tiwai@suse.de> (raw)
In-Reply-To: <6595e87d-1dae-b536-c17b-eafa07d04bbe@opensource.cirrus.com>

On Tue, 17 Aug 2021 13:28:21 +0200,
Vitaly Rodionov wrote:
> 
> On 14/08/2021 7:41 am, Takashi Iwai wrote:
> > On Fri, 13 Aug 2021 08:10:47 +0200,
> > Takashi Iwai wrote:
> >> On Thu, 12 Aug 2021 20:34:33 +0200,
> >> Vitaly Rodionov wrote:
> >>> From: Stefan Binding <sbinding@opensource.cirrus.com>
> >>>
> >>> During reboot, when the CS42L42 powers down, pops and clicks
> >>> may occur due to the codec not being shutdown gracefully.
> >>> This can be fixed by going through the suspend sequence,
> >>> which shuts down the codec cleanly inside the reboot_notify
> >>> hook, which is called on reboot.
> >>>
> >>> Signed-off-by: Stefan Binding <sbinding@opensource.cirrus.com>
> >>> Signed-off-by: Vitaly Rodionov <vitalyr@opensource.cirrus.com>
> >> I hold this one for now, as there is a fix series that deprecates the
> >> reboot_notify callback of HD-audio by forcibly doing runtime-suspend
> >> at shutdown.  Please check the three patches in
> >>    https://bugzilla.kernel.org/show_bug.cgi?id=214045
> >>
> >> I'm going to submit those soon in anyway.
> 
> Hi Takashi,
> 
> Thanks for letting us know. We have tested against for-next branch and
> we have an issue.
> 
> Loud pops on reboot. It looks like suspend have never been called on
> reboot or shutdown for us.

OK, we need to track down the cause.

Does the noise persist if the codec has been runtime-suspended
beforehand?  You can check the status in sysfs.


thanks,

Takashi

  reply	other threads:[~2021-08-17 12:16 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-12 18:34 [PATCH 1/2] ALSA: hda/cs8409: Prevent pops and clicks during suspend Vitaly Rodionov
2021-08-12 18:34 ` [PATCH 2/2] ALSA: hda/cs8409: Prevent pops and clicks during reboot Vitaly Rodionov
2021-08-13  6:10   ` Takashi Iwai
2021-08-14  6:41     ` Takashi Iwai
2021-08-17 11:28       ` Vitaly Rodionov
2021-08-17 12:16         ` Takashi Iwai [this message]
     [not found]           ` <e3df5f97-bf43-7eb8-e15d-4ab11dbae7ef@opensource.cirrus.com>
2021-08-26  6:03             ` Takashi Iwai
2021-08-26 10:49               ` Takashi Iwai
2021-08-26 10:56                 ` Vitaly Rodionov
2021-08-13  6:08 ` [PATCH 1/2] ALSA: hda/cs8409: Prevent pops and clicks during suspend Takashi Iwai

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