From: Shawn Guo <shawn.guo@freescale.com>
To: Fabio Estevam <festevam@gmail.com>
Cc: Fabio Estevam <fabio.estevam@freescale.com>,
alsa-devel@alsa-project.org, broonie@kernel.org, timur@tabi.org
Subject: Re: [PATCH] ASoC: fsl_ssi: Add suspend/resume support
Date: Fri, 23 May 2014 17:18:21 +0800 [thread overview]
Message-ID: <20140523091820.GB2650@dragon> (raw)
In-Reply-To: <1400823536-31708-1-git-send-email-festevam@gmail.com>
On Fri, May 23, 2014 at 02:38:56AM -0300, Fabio Estevam wrote:
> From: Fabio Estevam <fabio.estevam@freescale.com>
>
> Doing a suspend/resume sequence while playing an audio track in the backgroung
> causes broken audio right after resume:
>
> root@freescale /$ aplay clarinet.wav &
>
> root@freescale /home$ Playing WAVE 'clarinet.wav' : Signed 16 bit Little Endian,
> Rate 44100 Hz, Mono
>
> root@freescale /home$ echo mem > /sys/power/state
> PM: Syncing filesystems ... done.
> Freezing user space processes ... (elapsed 0.002 seconds) done.
> Freezing remaining freezable tasks ... (elapsed 0.002 seconds) done.
> Suspending console(s) (use no_console_suspend to debug)
> PM: suspend of devices complete after 37.082 msecs
> PM: suspend devices took 0.040 seconds
> PM: late suspend of devices complete after 4.234 msecs
> PM: noirq suspend of devices complete after 4.618 msecs
> Disabling non-boot CPUs ...
> PM: noirq resume of devices complete after 4.013 msecs
> PM: early resume of devices complete after 4.000 msecs
> PM: resume of devices complete after 68.907 msecs
> PM: resume devices took 0.070 seconds
> Restarting tasks ... Suspended. Trying resume. Failed. Restarting stream. Done.
> Suspended. Trying resume. Failed. Restarting stream. Done.
> Suspended. Trying resume. Failed. Restarting stream. Done.
> Suspended. Trying resume. Failed. Restarting stream. Done.
> Suspended. Trying resume. Failed. Restarting stream. Done.
> Suspended. Trying resume. Failed. Restarting stream. Done.
> Suspended. Trying resume. Failed. Restarting stream. Done.
> ....
>
> Add SNDRV_PCM_TRIGGER_RESUME/SUSPEND cases so that we can gracefully handle
> system suspend/resume.
>
> Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Shawn Guo <shawn.guo@freescale.com>
next prev parent reply other threads:[~2014-05-23 9:18 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-23 5:38 [PATCH] ASoC: fsl_ssi: Add suspend/resume support Fabio Estevam
2014-05-23 9:18 ` Shawn Guo [this message]
2014-05-26 13:24 ` Mark Brown
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