linux-kernel - Re: [PATCH 2/3] Input: synaptics - warn the users when there is a better mode

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Date:   Tue, 30 May 2017 10:16:06 +0200
From:   Benjamin Tissoires <benjamin.tissoires@...hat.com>
To:     Dmitry Torokhov <dmitry.torokhov@...il.com>
Cc:     linux-input@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/3] Input: synaptics - warn the users when there is a
 better mode

On May 29 2017 or thereabouts, Dmitry Torokhov wrote:
> On Tue, May 23, 2017 at 02:20:51PM -0700, Dmitry Torokhov wrote:
> > On Tue, May 23, 2017 at 10:36:56AM +0200, Benjamin Tissoires wrote:
> > > The Synaptics touchpads are now either using i2c-hid or rmi-smbus.
> > > Warn the users if they are missing the rmi-smbus modules and have no
> > > chance of reporting correct data.
> > > 
> > > Signed-off-by: Benjamin Tissoires <benjamin.tissoires@...hat.com>
> > > ---
> > >  drivers/input/mouse/synaptics.c | 4 ++++
> > >  1 file changed, 4 insertions(+)
> > > 
> > > diff --git a/drivers/input/mouse/synaptics.c b/drivers/input/mouse/synaptics.c
> > > index 58ff388..fc42259 100644
> > > --- a/drivers/input/mouse/synaptics.c
> > > +++ b/drivers/input/mouse/synaptics.c
> > > @@ -1814,6 +1814,10 @@ int synaptics_init(struct psmouse *psmouse)
> > >  	}
> > >  
> > >  	if (SYN_CAP_INTERTOUCH(info.ext_cap_0c)) {
> > > +#if !IS_ENABLED(CONFIG_RMI4_SMB) || !defined(CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS)
> > > +		psmouse_warn(psmouse, "The touchpad can support a better bus than the too old PS/2 protocol.\n"
> > > +			"Make sure MOUSE_PS2_SYNAPTICS_SMBUS and RMI4_SMB are enabled to get a better touchpad experience.\n");
> > > +#endif
> > 
> > I'll pull the checks into "if" to avoid preprocessor and also add checks
> > for forcepad PNP IDs as forcepads are not usable with RMI at the moment
> > since they need F21.
> 
> I made the changes I mentioned and pushed to my for-linus branch, please
> take a peek and yell if I screwed up.

Looks good to me, thanks!

Cheers,
Benjamin

> 
> > 
> > >  		error = synaptics_setup_intertouch(psmouse, &info, true);
> > >  		if (!error)
> > >  			return PSMOUSE_SYNAPTICS_SMBUS;
> > > -- 
> > > 2.9.4
> > > 
> > 
> > Thanks.
> > 
> > -- 
> > Dmitry
> 
> -- 
> Dmitry