linux-kernel - Re: [PATCH] cros_pchg: Sync port status on resume

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Date:   Thu, 14 Sep 2023 18:18:41 +0200
From:   Sebastian Reichel <sebastian.reichel@...labora.com>
To:     Daisuke Nojiri <dnojiri@...omium.org>
Cc:     linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] cros_pchg: Sync port status on resume

Hi,

On Tue, Aug 29, 2023 at 10:46:19AM -0700, Daisuke Nojiri wrote:
> Hi Sebastian. Friendly ping. Any progress on this? Thanks,

Please don't top-post on kernel mailing lists. Also I queued this On
2023-05-08, as you quoted. The patch landed in 6.4-rc1.

-- Sebastian

> On Mon, May 8, 2023 at 9:37 AM Sebastian Reichel
> <sebastian.reichel@...labora.com> wrote:
> > On Mon, Apr 17, 2023 at 03:16:10PM -0700, Daisuke Nojiri wrote:
> > > When a stylus is removed (or attached) during suspend, the device detach
> > > (or attach) events can be lost. This patch makes the peripheral device
> > > charge driver retrieve the latest status from the EC on resume.
> > >
> > > BUG=b:276414488
> > > TEST=Redrix
> > >
> > > Signed-off-by: Daisuke Nojiri <dnojiri@...omium.org>
> > > ---
> >
> > Thanks, queued.
> >
> > -- Sebastian
> >
> > >  .../power/supply/cros_peripheral_charger.c    | 25 ++++++++++++++++---
> > >  1 file changed, 22 insertions(+), 3 deletions(-)
> > >
> > > diff --git a/drivers/power/supply/cros_peripheral_charger.c b/drivers/power/supply/cros_peripheral_charger.c
> > > index 1379afd9698d..a204f2355be4 100644
> > > --- a/drivers/power/supply/cros_peripheral_charger.c
> > > +++ b/drivers/power/supply/cros_peripheral_charger.c
> > > @@ -227,8 +227,7 @@ static int cros_pchg_get_prop(struct power_supply *psy,
> > >       return 0;
> > >  }
> > >
> > > -static int cros_pchg_event(const struct charger_data *charger,
> > > -                        unsigned long host_event)
> > > +static int cros_pchg_event(const struct charger_data *charger)
> > >  {
> > >       int i;
> > >
> > > @@ -256,7 +255,7 @@ static int cros_ec_notify(struct notifier_block *nb,
> > >       if (!(host_event & EC_MKBP_PCHG_DEVICE_EVENT))
> > >               return NOTIFY_DONE;
> > >
> > > -     return cros_pchg_event(charger, host_event);
> > > +     return cros_pchg_event(charger);
> > >  }
> > >
> > >  static int cros_pchg_probe(struct platform_device *pdev)
> > > @@ -281,6 +280,8 @@ static int cros_pchg_probe(struct platform_device *pdev)
> > >       charger->ec_dev = ec_dev;
> > >       charger->ec_device = ec_device;
> > >
> > > +     platform_set_drvdata(pdev, charger);
> > > +
> > >       ret = cros_pchg_port_count(charger);
> > >       if (ret <= 0) {
> > >               /*
> > > @@ -349,9 +350,27 @@ static int cros_pchg_probe(struct platform_device *pdev)
> > >       return 0;
> > >  }
> > >
> > > +#ifdef CONFIG_PM_SLEEP
> > > +static int __maybe_unused cros_pchg_resume(struct device *dev)
> > > +{
> > > +     struct charger_data *charger = dev_get_drvdata(dev);
> > > +
> > > +     /*
> > > +      * Sync all ports on resume in case reports from EC are lost during
> > > +      * the last suspend.
> > > +      */
> > > +     cros_pchg_event(charger);
> > > +
> > > +     return 0;
> > > +}
> > > +#endif
> > > +
> > > +static SIMPLE_DEV_PM_OPS(cros_pchg_pm_ops, NULL, cros_pchg_resume);
> > > +
> > >  static struct platform_driver cros_pchg_driver = {
> > >       .driver = {
> > >               .name = DRV_NAME,
> > > +             .pm = &cros_pchg_pm_ops,
> > >       },
> > >       .probe = cros_pchg_probe
> > >  };
> > > --
> > > 2.39.2
> > >

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