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Input: add the ABS_MT_PRESSURE event

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For pressure-based multi-touch devices, a direct way to send sensor
intensity data per finger is needed. This patch adds the ABS_MT_PRESSURE
event to the MT protocol.

Requested-by: Yoonyoung Shim <[email protected]>
Requested-by: Mika Kuoppala <[email protected]>
Requested-by: Peter Hutterer <[email protected]>
Signed-off-by: Henrik Rydberg <[email protected]>
Signed-off-by: Dmitry Torokhov <[email protected]>
This commit is contained in:
Henrik Rydberg authored and Dmitry Torokhov committed 2010-01-28 22:32:45 -08:00
1 parent 93fb84b50f
commit cb6ecf6f7a
2 files changed
+2
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drivers/input/input.c
+1
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@@ -46,6 +46,7 @@ static unsigned int input_abs_bypass_init_data[] __initdata = {
ABS_MT_TOOL_TYPE,
ABS_MT_BLOB_ID,
ABS_MT_TRACKING_ID,
ABS_MT_PRESSURE,
0
};
static unsigned long input_abs_bypass[BITS_TO_LONGS(ABS_CNT)];
include/linux/input.h
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@@ -660,6 +660,7 @@ struct input_absinfo {
#define ABS_MT_TOOL_TYPE 0x37 /* Type of touching device */
#define ABS_MT_BLOB_ID 0x38 /* Group a set of packets as a blob */
#define ABS_MT_TRACKING_ID 0x39 /* Unique ID of initiated contact */
#define ABS_MT_PRESSURE 0x3a /* Pressure on contact area */
#define ABS_MAX 0x3f
#define ABS_CNT (ABS_MAX+1)