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| author |   Knut Wohlrab <Knut.Wohlrab@de.bosch.com> | 2016-04-25 14:08:25 -0700 |
|---|---|---|
| committer |   Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2016-04-25 14:27:56 -0700 |
| commit | 6984ab1ab35f422292b7781c65284038bcc0f6a6 (patch) | |
| tree | e1900b55975a16028f35ebad15664bf46bc1dc26 /drivers/input/touchscreen/zforce_ts.c | |
| parent | Input: twl6040-vibra - fix atomic schedule panic (diff) | |
| download | linux-dev-6984ab1ab35f422292b7781c65284038bcc0f6a6.tar.xz linux-dev-6984ab1ab35f422292b7781c65284038bcc0f6a6.zip | |
Input: zforce_ts - fix dual touch recognition
A wrong decoding of the touch coordinate message causes a wrong touch
ID. Touch ID for dual touch must be 0 or 1.
According to the actual Neonode nine byte touch coordinate coding,
the state is transported in the lower nibble and the touch ID in
the higher nibble of payload byte five.
Signed-off-by: Knut Wohlrab <Knut.Wohlrab@de.bosch.com>
Signed-off-by: Oleksij Rempel <linux@rempel-privat.de>
Signed-off-by: Dirk Behme <dirk.behme@de.bosch.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'drivers/input/touchscreen/zforce_ts.c')
| -rw-r--r-- | drivers/input/touchscreen/zforce_ts.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/input/touchscreen/zforce_ts.c b/drivers/input/touchscreen/zforce_ts.c index 9bbadaaf6bc3..7b3845aa5983 100644 --- a/drivers/input/touchscreen/zforce_ts.c +++ b/drivers/input/touchscreen/zforce_ts.c @@ -370,8 +370,8 @@ static int zforce_touch_event(struct zforce_ts *ts, u8 *payload) point.coord_x = point.coord_y = 0; } - point.state = payload[9 * i + 5] & 0x03; - point.id = (payload[9 * i + 5] & 0xfc) >> 2; + point.state = payload[9 * i + 5] & 0x0f; + point.id = (payload[9 * i + 5] & 0xf0) >> 4; /* determine touch major, minor and orientation */ point.area_major = max(payload[9 * i + 6], |