Messages in this thread | | | Date | Thu, 24 Sep 2015 10:38:09 +0900 | From | Inha Song <> | Subject | Re: [alsa-devel] [PATCH] mfd: arizona: Call the runtime PM function if the state is runtime resumed |
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Hi, Charles,
On Wed, 23 Sep 2015 15:43:12 +0100 Charles Keepax <ckeepax@opensource.wolfsonmicro.com> wrote:
> On Wed, Sep 23, 2015 at 11:04:04AM +0900, Inha Song wrote: > > Hi, Charles, > > > > I saw the log with LOG_DEVICE in regmap. But, I'm not sure the reason that suspend noirq failed is IRQ occuring. > > > > Here is my log: > > -- > > root@localhost:~# aplay test.wav > > [ 41.049072] s3c64xx_spi_runtime_suspend > > [ 41.056043] arizona spi1.0: ASRC underclocked > > .... > > [ 72.308238] arizona spi1.0: Suspend, disabling IRQ > > [ 72.320286] arizona spi1.0: 400 <= 0 > > [ 72.320310] s3c64xx_spi_runtime_resume > > [ 72.336047] arizona spi1.0: 51a <= 0 > > [ 72.336217] arizona spi1.0: 101 <= 8604 > > [ 72.336401] arizona spi1.0: 171 <= 3 > > [ 72.336425] arizona spi1.0: 171 <= 2 > > [ 72.336731] arizona spi1.0: 171 <= 0 > > [ 72.336751] arizona spi1.0: SYSCLK cleared > > [ 72.338584] arizona spi1.0: SYSCLK cleared > > This bit looks likely related to your problem, it looks like the > FLL is being turned off. My guess here would be that you haven't > called snd_soc_dapm_ignore_suspend from your machine driver, you > need to call this for all end points that may want to stay > powered up during system suspend and also set the ignore_suspend > flag on any DAI links you want to remain active during system > suspend.
But, We should call the trigger callback with SNDRV_PCM_TRIGGER_SUSPEND and *_RESUME command for support senarios what suspend during the playback and resume. So, I can't set the "ignore_suspend" in playback DAI.
For this reason, I would have called the runtime_suspend manually in arizona-core when suspend.
Best Reagrds, Inha Song.
> > Likely what is happening here is that you are disabling the FLL > and this is causing some IRQ which is then causing a wake event > thus aborting the suspend. > > Thanks, > Charles
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