The atmel touch messages contain orientation information as a byte in a packed
format which can be passed straight on to Android if the input device
configuration is correct, see
http://source.android.com/tech/input/touch-devices.html#touchorientationcalibration
This requires vector reports to be enabled in maXTouch config (zero DISVECT
bit in T9 CTRL field)
Android converts the format in frameworks/base/services/input/Input.cpp,
search for ORIENTATION_CALIBRATION_VECTOR.
Signed-off-by: Nick Dyer <nick.d...@itdev.co.uk>
Acked-by: Benson Leung <ble...@chromium.org>
---
drivers/input/touchscreen/atmel_mxt_ts.c | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/drivers/input/touchscreen/atmel_mxt_ts.c
b/drivers/input/touchscreen/atmel_mxt_ts.c
index 27a2425..bd8971e 100644
--- a/drivers/input/touchscreen/atmel_mxt_ts.c
+++ b/drivers/input/touchscreen/atmel_mxt_ts.c
@@ -718,6 +718,7 @@ static void mxt_proc_t9_message(struct mxt_data *data, u8
*message)
int y;
int area;
int amplitude;
+ u8 vector;
/* do not report events if input device not yet registered */
if (!data->enable_reporting)
@@ -736,9 +737,10 @@ static void mxt_proc_t9_message(struct mxt_data *data, u8
*message)
area = message[5];
amplitude = message[6];
+ vector = message[7];
dev_dbg(dev,
- "[%u] %c%c%c%c%c%c%c%c x: %5u y: %5u area: %3u amp: %3u\n",
+ "[%u] %c%c%c%c%c%c%c%c x: %5u y: %5u area: %3u amp: %3u vector:
%02X\n",
id,
(status & MXT_T9_DETECT) ? 'D' : '.',
(status & MXT_T9_PRESS) ? 'P' : '.',
@@ -748,7 +750,7 @@ static void mxt_proc_t9_message(struct mxt_data *data, u8
*message)
(status & MXT_T9_AMP) ? 'A' : '.',
(status & MXT_T9_SUPPRESS) ? 'S' : '.',
(status & MXT_T9_UNGRIP) ? 'U' : '.',
- x, y, area, amplitude);
+ x, y, area, amplitude, vector);
input_mt_slot(input_dev, id);
@@ -768,6 +770,7 @@ static void mxt_proc_t9_message(struct mxt_data *data, u8
*message)
input_report_abs(input_dev, ABS_MT_POSITION_Y, y);
input_report_abs(input_dev, ABS_MT_PRESSURE, amplitude);
input_report_abs(input_dev, ABS_MT_TOUCH_MAJOR, area);
+ input_report_abs(input_dev, ABS_MT_ORIENTATION, vector);
} else {
/* Touch no longer active, close out slot */
input_mt_report_slot_state(input_dev, MT_TOOL_FINGER, 0);
@@ -2186,6 +2189,8 @@ static int mxt_initialize_t9_input_device(struct mxt_data
*data)
0, data->max_y, 0, 0);
input_set_abs_params(input_dev, ABS_MT_PRESSURE,
0, 255, 0, 0);
+ input_set_abs_params(input_dev, ABS_MT_ORIENTATION,
+ 0, 255, 0, 0);
input_set_drvdata(input_dev, data);
--
1.7.10.4
--
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