linux-kernel - Re: [PATCH 1/2] input: cros_ec

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Date:   Sat, 1 Apr 2017 10:14:14 -0700
From:   Dmitry Torokhov <dmitry.torokhov@...il.com>
To:     Jeffy Chen <jeffy.chen@...k-chips.com>
Cc:     linux-kernel@...r.kernel.org, briannorris@...omium.org,
        dbasehore@...gle.com, dianders@...omium.org,
        Gwendal Grignou <gwendal@...omium.org>,
        Vic Yang <victoryang@...gle.com>, linux-input@...r.kernel.org,
        Enric Balletbo Serra <enric.balletbo@...labora.com>,
        Lee Jones <lee.jones@...aro.org>
Subject: Re: [PATCH 1/2] input: cros_ec_keyb: Report wakeup events

On Sat, Apr 01, 2017 at 10:12:37AM -0700, Dmitry Torokhov wrote:
> Hi Jeffy,
> 
> On Thu, Mar 30, 2017 at 05:50:49PM +0800, Jeffy Chen wrote:
> > Report wakeup events when process events.
> > 
> > Signed-off-by: Jeffy Chen <jeffy.chen@...k-chips.com>
> > ---
> > 
> >  drivers/input/keyboard/cros_ec_keyb.c | 9 +++++++++
> >  1 file changed, 9 insertions(+)
> > 
> > diff --git a/drivers/input/keyboard/cros_ec_keyb.c b/drivers/input/keyboard/cros_ec_keyb.c
> > index 6a250d6..a93d55f 100644
> > --- a/drivers/input/keyboard/cros_ec_keyb.c
> > +++ b/drivers/input/keyboard/cros_ec_keyb.c
> > @@ -286,6 +286,9 @@ static int cros_ec_keyb_work(struct notifier_block *nb,
> >  		return NOTIFY_DONE;
> >  	}
> >  
> > +	if (device_may_wakeup(ckdev->dev))
> > +		pm_wakeup_event(ckdev->dev, 0);
> > +
> >  	return NOTIFY_OK;
> >  }
> >  
> > @@ -632,6 +635,12 @@ static int cros_ec_keyb_probe(struct platform_device *pdev)
> >  		return err;
> >  	}
> >  
> > +	err = device_init_wakeup(dev, 1);
> 
> In the other patch you are adding "wakeup-source" to the DT binding, but
> here you mark all EC deices as wakeup sources. You need to use
> device_property_read_bool(dev, "wakeup-source") and use the result in
> call to device_init_wakeup().

And please also update device tree binding doc for the driver.

> 
> > +	if (err) {
> > +		dev_err(dev, "cannot init wakeup: %d\n", err);
> > +		return err;
> > +	}
> > +
> >  	return 0;
> >  }
> >  
> 
> Thanks.
> 
> -- 
> Dmitry

-- 
Dmitry