On Thu, Aug 20, 2015 at 04:13:39PM -0700, Dmitry Torokhov wrote:
> On Thu, Aug 20, 2015 at 04:08:40PM -0700, Dmitry Torokhov wrote:
> > Hi Gabor,
> >
> > On Fri, Aug 21, 2015 at 01:05:46AM +0200, Gabor Balla wrote:
> > > Hi Dmitry,
> > >
> > > On Fri, Aug 21, 2015 at 1:01 AM, Dmitry Torokhov
> > > <dmitry.torokhov@xxxxxxxxx> wrote:
> > > > On Thu, Aug 20, 2015 at 3:56 PM, Dmitry Torokhov
> > > > <dmitry.torokhov@xxxxxxxxx> wrote:
> > > >> On Fri, Aug 21, 2015 at 12:24:59AM +0200, Gabor Balla wrote:
> > > >>> Hi Dmitry,
> > > >>>
> > > >>> On Thu, Aug 20, 2015 at 11:35 PM, Dmitry Torokhov
> > > >>> <dmitry.torokhov@xxxxxxxxx> wrote:
> > > >>> > On Thu, Aug 20, 2015 at 10:50:27PM +0200, Gabor Balla wrote:
> > > [...]
> > > > Ah, wait, not quite still. So we actually do want to disable gestures
> > > > when in Absolute mode (non extended). Although frankly I do not think
> > > > we'll ever see pre 4.0 Synaptics device in a wild.
> > >
> > > Also notice there is a function called synaptics_set_disable_gesture that can
> > > change that bit regardless of current mode.
> >
> > That attribute is only created when touchpad is used in relative mode,
> > so should be OK.
> >
> > Thanks.
>
> How about this one?
Nick, Benjamin, could you please give this a spin?
>
> Thanks.
>
> --
> Dmitry
>
>
> Input: synaptics - fix handling of disabling gesture mode
>
> From: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx>
>
> Bit 2 of the mode byte has dual meaning: it can disable reporting of
> gestures when touchpad works in Relative mode or normal Absolute mode,
> or it can enable so called Extended W-Mode when touchpad uses enhanced
> Absolute mode (W-mode). The extended W-Mode confuses our driver and
> causes missing button presses on some Thinkpads (x250, T450s), so let's
> make sure we do not enable it.
>
> Also, according to the spec W mode "... bit is defined only in Absolute
> mode on pads whose capExtended capability bit is set. In Relative mode and
> in TouchPads without this capability, the bit is reserved and should be
> left at 0.", so let's make sure we respect this requirement as well.
>
> Reported-by: Nick Bowler <nbowler@xxxxxxxxxx>
> Suggested-by: Gabor Balla <gaborwho@xxxxxxxxx>
> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx>
> ---
> drivers/input/mouse/synaptics.c | 12 ++++++++----
> 1 file changed, 8 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/input/mouse/synaptics.c b/drivers/input/mouse/synaptics.c
> index 28daca1..d9c9e41 100644
> --- a/drivers/input/mouse/synaptics.c
> +++ b/drivers/input/mouse/synaptics.c
> @@ -519,14 +519,18 @@ static int synaptics_set_mode(struct psmouse *psmouse)
> struct synaptics_data *priv = psmouse->private;
>
> priv->mode = 0;
> - if (priv->absolute_mode)
> +
> + if (priv->absolute_mode) {
> priv->mode |= SYN_BIT_ABSOLUTE_MODE;
> - if (priv->disable_gesture)
> + if (SYN_CAP_EXTENDED(priv->capabilities))
> + priv->mode |= SYN_BIT_W_MODE;
> + }
> +
> + if (!(priv->mode & SYN_BIT_W_MODE) && priv->disable_gesture)
> priv->mode |= SYN_BIT_DISABLE_GESTURE;
> +
> if (psmouse->rate >= 80)
> priv->mode |= SYN_BIT_HIGH_RATE;
> - if (SYN_CAP_EXTENDED(priv->capabilities))
> - priv->mode |= SYN_BIT_W_MODE;
>
> if (synaptics_mode_cmd(psmouse, priv->mode))
> return -1;
--
Dmitry
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