Hi KT, On Wed, May 25, 2016 at 07:44:57PM +0800, 廖崇榮 wrote: > Hi Dmitry, > > Update /input/mouse/input-mt.c > Emit BTN_TOO_FINGER in input_mt_report_pointer_emulation if touchpad meets > hover condition.
Please do not top-post and also do not send patches as attachments, they should be sent inline. Please take a look at "git send-email" command. Thanks. > > Thanks & BR KT > > -----Original Message----- > From: 'Dmitry Torokhov' [mailto:dmitry.torok...@gmail.com] > Sent: Friday, May 20, 2016 8:52 AM > To: 廖崇榮 > Cc: linux-in...@vger.kernel.org; linux-kernel@vger.kernel.org; > zac.hs...@emc.com.tw; '黃世鵬 經理'; 'Charles Mooney'; 'Agnes Cheng'; 'jeff' > Subject: Re: [PATCH] Input: Change BTN_TOOL_FINGER flag when hover event > trigger > > On Tue, May 17, 2016 at 10:20:40PM +0800, 廖崇榮 wrote: > > Hi Dmitry, > > > > I want to confirm my thought for your idea to avoid misunderstanding. > > I think you want to encapsulate " BTN_TOOL_FINGER" in the > > [input_mt_report_pointer_emulation] if hover happen. > > Vendor driver only report "ABS_DISTANCE" and let > > [input_mt_report_pointer_emulation] emit BTN_TOOL_FINGER report without > > change function parameter. > > > > Please let me know if my misunderstand about your idea. > > Yes, that is correct. Something like this: > > diff --git a/drivers/input/input-mt.c b/drivers/input/input-mt.c index > 54fce56..a1bbec9 100644 > --- a/drivers/input/input-mt.c > +++ b/drivers/input/input-mt.c > @@ -218,8 +218,23 @@ void input_mt_report_pointer_emulation(struct input_dev > *dev, bool use_count) > } > > input_event(dev, EV_KEY, BTN_TOUCH, count > 0); > - if (use_count) > + > + if (use_count) { > + if (count == 0 && > + !test_bit(ABS_MT_DISTANCE, dev->absbit) && > + test_bit(ABS_DISTANCE, dev->absbit) && > + input_abs_get_val(dev, ABS_DISTANCE) != 0) { > + /* > + * Force reporting BTN_TOOL_FINGER for devices that > + * only report general hover (and not per-contact > + * distance) when contact is in proximity but not > + * on the surface. > + */ > + count = 1; > + } > + > input_mt_report_finger_count(dev, count); > + } > > if (oldest) { > int x = input_mt_get_value(oldest, ABS_MT_POSITION_X); > > -- > Dmitry -- Dmitry
