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authorHenrik Rydberg <rydberg@euromail.se>2009-05-23 09:51:20 -0700
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2009-05-23 09:53:18 -0700
commitdf391e0eda1e678add56a8e34226edf05d89af6a (patch)
tree87d375cecc32a0784d42adb6b4e8b04fbf70dadb /drivers/input
parent705a76d2d22a2824f45f07d023a380293554e989 (diff)
Input: multitouch - add tracking ID to the protocol
There are a few multi-touch devices that support finger tracking well in hardware, Stantum being the prime example. By exposing the tracking ID in the MT protocol, evdev bandwidth and cpu usage in user space can be reduced. This patch adds the ABS_MT_TRACKING_ID to the MT protocol. Signed-off-by: Henrik Rydberg <rydberg@euromail.se> Tested-by: Stéphane Chatty <chatty@enac.fr> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Diffstat (limited to 'drivers/input')
-rw-r--r--drivers/input/input.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/input/input.c b/drivers/input/input.c
index e54e002665b0..5d445f48789b 100644
--- a/drivers/input/input.c
+++ b/drivers/input/input.c
@@ -42,6 +42,7 @@ static unsigned int input_abs_bypass_init_data[] __initdata = {
ABS_MT_POSITION_Y,
ABS_MT_TOOL_TYPE,
ABS_MT_BLOB_ID,
+ ABS_MT_TRACKING_ID,
0
};
static unsigned long input_abs_bypass[BITS_TO_LONGS(ABS_CNT)];