linux-kernel - Re: [PATCH v2] platform/x86: intel-vbtn: Report switch events when event wakes device

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Message-ID: <CAHp75VdQs-e0F-MHk3bX3Csp6cGCf5mYJLdVVTBc3i3S8ExgmA@mail.gmail.com>
Date:   Fri, 24 May 2019 19:31:10 +0300
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Mario Limonciello <Mario.Limonciello@...l.com>
Cc:     jettrink@...omium.org, mathewk@...omium.org,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        AceLan Kao <acelan.kao@...onical.com>,
        Andy Shevchenko <andy@...radead.org>,
        Darren Hart <dvhart@...radead.org>,
        Platform Driver <platform-driver-x86@...r.kernel.org>
Subject: Re: [PATCH v2] platform/x86: intel-vbtn: Report switch events when
 event wakes device

On Tue, May 21, 2019 at 4:43 PM <Mario.Limonciello@...l.com> wrote:
>
> > -----Original Message-----
> > From: Jett Rink <jettrink@...omium.org>
> > Sent: Tuesday, May 21, 2019 8:37 AM
> > To: Mathew King
> > Cc: linux-kernel; AceLan Kao; Andy Shevchenko; Darren Hart; platform-driver-
> > x86@...r.kernel.org; Limonciello, Mario
> > Subject: Re: [PATCH v2] platform/x86: intel-vbtn: Report switch events when event
> > wakes device
> >
> >

Pushed to my review and testing queue, thanks!

> > [EXTERNAL EMAIL]
> >
> > On Mon, May 20, 2019 at 4:41 PM Mathew King <mathewk@...omium.org>
> > wrote:
> > >
> > > When a switch event, such as tablet mode/laptop mode or docked/undocked,
> > > wakes a device make sure that the value of the swich is reported.
> > > Without when a device is put in tablet mode from laptop mode when it is
> > > suspended or vice versa the device will wake up but mode will be
> > > incorrect.
> > >
> > > Tested by suspending a device in laptop mode and putting it in tablet
> > > mode, the device resumes and is in tablet mode. When suspending the
> > > device in tablet mode and putting it in laptop mode the device resumes
> > > and is in laptop mode.
> > >
> > > Signed-off-by: Mathew King <mathewk@...omium.org>
> > >
> > > ---
> > > Changes in v2:
> > >   - Added comment explaining why switch events are reported
> > >   - Format so that checkpatch is happy
> > > ---
> > >  drivers/platform/x86/intel-vbtn.c | 16 ++++++++++++++--
> > >  1 file changed, 14 insertions(+), 2 deletions(-)
> > >
> > > diff --git a/drivers/platform/x86/intel-vbtn.c b/drivers/platform/x86/intel-vbtn.c
> > > index 06cd7e818ed5..a0d0cecff55f 100644
> > > --- a/drivers/platform/x86/intel-vbtn.c
> > > +++ b/drivers/platform/x86/intel-vbtn.c
> > > @@ -76,12 +76,24 @@ static void notify_handler(acpi_handle handle, u32
> > event, void *context)
> > >         struct platform_device *device = context;
> > >         struct intel_vbtn_priv *priv = dev_get_drvdata(&device->dev);
> > >         unsigned int val = !(event & 1); /* Even=press, Odd=release */
> > > -       const struct key_entry *ke_rel;
> > > +       const struct key_entry *ke, *ke_rel;
> > >         bool autorelease;
> > >
> > >         if (priv->wakeup_mode) {
> > > -               if (sparse_keymap_entry_from_scancode(priv->input_dev, event)) {
> > > +               ke = sparse_keymap_entry_from_scancode(priv->input_dev, event);
> > > +               if (ke) {
> > >                         pm_wakeup_hard_event(&device->dev);
> > > +
> > > +                       /*
> > > +                        * Switch events like tablet mode will wake the device
> > > +                        * and report the new switch position to the input
> > > +                        * subsystem.
> > > +                        */
> > Thanks for adding the comment; This looks good to me.
> >
> > > +                       if (ke->type == KE_SW)
> > > +                               sparse_keymap_report_event(priv->input_dev,
> > > +                                                          event,
> > > +                                                          val,
> > > +                                                          0);
> > >                         return;
> > >                 }
> > >                 goto out_unknown;
> > > --
> > > 2.21.0.1020.gf2820cf01a-goog
> > >
> >
> > Reviewed-by: Jett Rink <jettrink@...omium.org>
>
> Reviewed-by: Mario Limonciello <mario.limonciello@...l.com>



-- 
With Best Regards,
Andy Shevchenko