From: Chase Douglas <chase.douglas@canonical.com>
To: djkurtz@chromium.org
Cc: dmitry.torokhov@gmail.com, rydberg@euromail.se,
rubini@cvml.unipv.it, linux-input@vger.kernel.org,
linux-kernel@vger.kernel.org, derek.foreman@collabora.co.uk,
daniel.stone@collabora.co.uk, olofj@chromium.org
Subject: Re: [PATCH 6/9 v2] Input: synaptics - process finger (<=3) transitions
Date: Fri, 22 Jul 2011 18:11:33 -0700 [thread overview]
Message-ID: <4E2A1FC5.90607@canonical.com> (raw)
In-Reply-To: <1311169146-20066-7-git-send-email-djkurtz@chromium.org>
On 07/20/2011 06:39 AM, djkurtz@chromium.org wrote:
> From: Daniel Kurtz <djkurtz@chromium.org>
>
> Synaptics image sensor touchpads track 5 fingers, but only report 2.
>
> This patch attempts to deal with some idiosyncrasies of these touchpads:
>
> * When there are 3 or more fingers, only two are reported.
> * The number of fingers can change at any time, but is only reported in
> SGM packets, thus at a number-of-fingers change, it is not possible
> to tell whether the AGM finger is for the original or new number of
> fingers.
> * When the number of fingers changes from 2->3 it is not
> possible to tell which of the 2 fingers are now reported.
> * When number of fingers changes from 3->2 it is often not possible to
> tell which finger was removed, and which are now being reported.
>
> When 2 or more packets are present on the touchpad, the kernel reports
^touches or fingers
next prev parent reply other threads:[~2011-07-23 1:11 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-07-20 13:38 [PATCH 0/9 v2] Synaptics image sensor support djkurtz
2011-07-20 13:38 ` [PATCH 1/9 v2] Input: synaptics - refactor y inversion djkurtz
2011-07-23 0:30 ` Chase Douglas
2011-07-25 8:27 ` Dmitry Torokhov
2011-07-26 2:19 ` Daniel Kurtz
2011-07-26 22:59 ` Chase Douglas
2011-07-20 13:38 ` [PATCH 2/9 v2] Input: synaptics - refactor agm packet parsing djkurtz
2011-07-23 0:32 ` Chase Douglas
2011-07-20 13:39 ` [PATCH 3/9 v2] Input: synaptics - refactor initialization of abs position axes djkurtz
2011-07-23 0:36 ` Chase Douglas
2011-07-20 13:39 ` [PATCH 4/9 v2] Input: synaptics - add image sensor support djkurtz
2011-07-20 13:39 ` [PATCH 5/9 v2] Input: synaptics - decode AGM packet types djkurtz
2011-07-20 13:39 ` [PATCH 6/9 v2] Input: synaptics - process finger (<=3) transitions djkurtz
2011-07-23 1:11 ` Chase Douglas [this message]
2011-07-20 13:39 ` [PATCH 7/9 v2] Input: synaptics - improved 2->3 finger transition handling djkurtz
2011-07-23 1:07 ` Chase Douglas
2011-07-23 4:36 ` Daniel Kurtz
2011-07-23 4:36 ` Daniel Kurtz
2011-07-26 23:14 ` Chase Douglas
2011-07-27 4:48 ` Daniel Kurtz
2011-07-27 4:48 ` Daniel Kurtz
2011-07-27 21:13 ` Chase Douglas
2011-07-28 1:00 ` Daniel Kurtz
2011-07-28 2:07 ` Chase Douglas
2011-07-28 13:56 ` Daniel Kurtz
2011-07-28 13:56 ` Daniel Kurtz
2011-07-28 17:31 ` Chase Douglas
2011-07-20 13:39 ` [PATCH 8/9 v2] Input: add BTN_TOOL_QUINTTAP for reporting 5 fingers on touchpad djkurtz
2011-07-23 0:59 ` Chase Douglas
2011-07-25 8:29 ` Dmitry Torokhov
2011-07-25 9:14 ` Daniel Kurtz
2011-07-25 18:16 ` Dmitry Torokhov
2011-07-26 2:18 ` Daniel Kurtz
2011-08-11 20:07 ` Henrik Rydberg
2011-08-11 20:07 ` Henrik Rydberg
2011-07-26 23:03 ` Chase Douglas
2011-07-20 13:39 ` [PATCH 9/9 v2] Input: synaptics - process finger (<=5) transitions djkurtz
2011-07-23 1:02 ` Chase Douglas
2011-07-23 4:11 ` Daniel Kurtz
2011-07-26 23:17 ` Chase Douglas
2011-07-23 1:13 ` [PATCH 0/9 v2] Synaptics image sensor support Chase Douglas
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