linux-kernel - Re: rtc: fsl-ftm-alarm: add shutdown interface

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Message-ID: <20200915102817.GL4230@piout.net>
Date:   Tue, 15 Sep 2020 12:28:17 +0200
From:   Alexandre Belloni <alexandre.belloni@...tlin.com>
To:     Biwen Li <biwen.li@....nxp.com>
Cc:     leoyang.li@....com, linux-rtc@...r.kernel.org,
        linux-kernel@...r.kernel.org, jiafei.pan@....com,
        Biwen Li <biwen.li@....com>
Subject: Re: rtc: fsl-ftm-alarm: add shutdown interface

Hi,

On 30/03/2020 18:44:01+0200, Alexandre Belloni wrote:
> On 30/03/2020 20:26:16+0800, Biwen Li wrote:
> > From: Biwen Li <biwen.li@....com>
> > 
> > Add shutdown interface
> > 
> > Signed-off-by: Biwen Li <biwen.li@....com>
> > ---
> >  drivers/rtc/rtc-fsl-ftm-alarm.c | 10 ++++++++++
> >  1 file changed, 10 insertions(+)
> > 
> > diff --git a/drivers/rtc/rtc-fsl-ftm-alarm.c b/drivers/rtc/rtc-fsl-ftm-alarm.c
> > index d7fa6c16f47b..118a775e8316 100644
> > --- a/drivers/rtc/rtc-fsl-ftm-alarm.c
> > +++ b/drivers/rtc/rtc-fsl-ftm-alarm.c
> > @@ -307,6 +307,15 @@ static int ftm_rtc_probe(struct platform_device *pdev)
> >  	return 0;
> >  }
> >  
> > +static void ftm_rtc_shutdown(struct platform_device *pdev)
> > +{
> > +	struct ftm_rtc *rtc = platform_get_drvdata(pdev);
> > +
> > +	ftm_irq_acknowledge(rtc);
> > +	ftm_irq_disable(rtc);
> > +	ftm_clean_alarm(rtc);
> 
> If the alarm is able to start the platform, then you probably don't want
> to disable the alarm on shutdown.
> 

I realise you never replied to that question. Is that patch still of
interest?

-- 
Alexandre Belloni, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com