On Wed, Jun 29, 2011 at 12:07 AM, <djkurtz@xxxxxxxxxxxx> wrote: > From: Daniel Kurtz <djkurtz@xxxxxxxxxxxx> > > Synaptics touchpads report a 'w' value in each data report. > For touchpads that support palm detection, when there is a single finger > on the pad, the 'w' value reports its width in the range 4 to 15. > Thus, the minimum valid width is 4. FYI: I had debated on this as well. When driver was first modified to report min/max width, the min width of zero was chosen because when not touching the pad a value of zero is forced by driver to user. So the range is 0, 4-15. > > Note: Other values of 'w' are used to report special conditions: > w=0: 2 fingers are on the pad > w=1: 3 or more fingers are on the pad > w=2: the packet contains "Advanced Gesture Mode" data. > > Signed-off-by: Daniel Kurtz <djkurtz@xxxxxxxxxxxx> > --- > drivers/input/mouse/synaptics.c | 2 +- > 1 files changed, 1 insertions(+), 1 deletions(-) > > diff --git a/drivers/input/mouse/synaptics.c b/drivers/input/mouse/synaptics.c > index f6d0c04..a4b7801 100644 > --- a/drivers/input/mouse/synaptics.c > +++ b/drivers/input/mouse/synaptics.c > @@ -706,7 +706,7 @@ static void set_input_params(struct input_dev *dev, struct synaptics_data *priv) > } > > if (SYN_CAP_PALMDETECT(priv->capabilities)) > - input_set_abs_params(dev, ABS_TOOL_WIDTH, 0, 15, 0, 0); > + input_set_abs_params(dev, ABS_TOOL_WIDTH, 4, 15, 0, 0); > > __set_bit(EV_KEY, dev->evbit); > __set_bit(BTN_TOUCH, dev->keybit); > -- > 1.7.3.1 > > -- > To unsubscribe from this list: send the line "unsubscribe linux-input" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
