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 <jy0922.shim@xxxxxxxxxxx>
Requested-by: Mika Kuoppala <mika.kuoppala@xxxxxxxxx>
Requested-by: Peter Hutterer <peter.hutterer@xxxxxxxxx>
Signed-off-by: Henrik Rydberg <rydberg@xxxxxxxxxxx>
---
drivers/input/input.c | 1 +
include/linux/input.h | 1 +
2 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/drivers/input/input.c b/drivers/input/input.c
index 30b503b..86cb2d2 100644
--- a/drivers/input/input.c
+++ b/drivers/input/input.c
@@ -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)];
diff --git a/include/linux/input.h b/include/linux/input.h
index 7be8a65..735ceaf 100644
--- a/include/linux/input.h
+++ b/include/linux/input.h
@@ -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)
--
1.6.3.3
--
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