diff options
| author | Daniel Kurtz <djkurtz@chromium.org> | 2011-08-23 23:00:33 -0700 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2011-08-23 23:08:01 -0700 |
| commit | 7afdb842d9fa8cd62c33e76a1efc62c59772216d (patch) | |
| tree | e24629a748d6a8f12bf9abecffbdb94295748867 /drivers/input/mouse/synaptics.h | |
| parent | 6de58dd625a7645008c5c450bf97a5793faf58c3 (diff) | |
Input: synaptics - refactor agm packet parsing
When a Synaptics touchpad is in "AGM" mode, and multiple fingers are
detected, the touchpad sends alternating "Advanced Gesture Mode" (AGM) and
"Simple Gesture Mode" (SGM) packets.
The AGM packets have w=2, and contain reduced resolution finger data.
The SGM packets have w={0,1} and contain full resolution finger data.
Refactor the parsing of agm packets to its own function, and rename the
synaptics_data.mt field to .agm to indicate that it contains the contents of
the last agm packet.
Signed-off-by: Daniel Kurtz <djkurtz@chromium.org>
Acked-by: Chase Douglas <chase.douglas@canonical.com>
Acked-by: Henrik Rydberg <rydberg@euromail.se>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Diffstat (limited to 'drivers/input/mouse/synaptics.h')
| -rw-r--r-- | drivers/input/mouse/synaptics.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/input/mouse/synaptics.h b/drivers/input/mouse/synaptics.h index ca040aa80fa..a9efbf3e3ea 100644 --- a/drivers/input/mouse/synaptics.h +++ b/drivers/input/mouse/synaptics.h @@ -146,7 +146,11 @@ struct synaptics_data { struct serio *pt_port; /* Pass-through serio port */ - struct synaptics_hw_state mt; /* current gesture packet */ + /* + * Last received Advanced Gesture Mode (AGM) packet. An AGM packet + * contains position data for a second contact, at half resolution. + */ + struct synaptics_hw_state agm; }; void synaptics_module_init(void); |