Atmel touchscreen chips can use MT protocol B because they can assign
unique id to ABS_MT_TRACKING_ID from finger id provided by hardware.
Signed-off-by: Joonyoung Shim <jy0922.shim@xxxxxxxxxxx>
---
drivers/input/touchscreen/atmel_mxt_ts.c | 26 ++++++++++++++------------
1 files changed, 14 insertions(+), 12 deletions(-)
diff --git a/drivers/input/touchscreen/atmel_mxt_ts.c b/drivers/input/touchscreen/atmel_mxt_ts.c
index fd1fda5..7d485c2 100644
--- a/drivers/input/touchscreen/atmel_mxt_ts.c
+++ b/drivers/input/touchscreen/atmel_mxt_ts.c
@@ -17,7 +17,7 @@
#include <linux/firmware.h>
#include <linux/i2c.h>
#include <linux/i2c/atmel_mxt_ts.h>
-#include <linux/input.h>
+#include <linux/input/mt.h>
#include <linux/interrupt.h>
#include <linux/slab.h>
@@ -504,19 +504,20 @@ static void mxt_input_report(struct mxt_data *data, int single_id)
if (!finger[id].status)
continue;
- input_report_abs(input_dev, ABS_MT_TOUCH_MAJOR,
- finger[id].status != MXT_RELEASE ?
- finger[id].area : 0);
- input_report_abs(input_dev, ABS_MT_POSITION_X,
- finger[id].x);
- input_report_abs(input_dev, ABS_MT_POSITION_Y,
- finger[id].y);
- input_mt_sync(input_dev);
+ input_mt_slot(input_dev, id);
+ input_mt_report_slot_state(input_dev, MT_TOOL_FINGER,
+ finger[id].status != MXT_RELEASE);
- if (finger[id].status == MXT_RELEASE)
- finger[id].status = 0;
- else
+ if (finger[id].status != MXT_RELEASE) {
finger_num++;
+ input_report_abs(input_dev, ABS_MT_TOUCH_MAJOR,
+ finger[id].area);
+ input_report_abs(input_dev, ABS_MT_POSITION_X,
+ finger[id].x);
+ input_report_abs(input_dev, ABS_MT_POSITION_Y,
+ finger[id].y);
+ } else
+ finger[id].status = 0;
}
input_report_key(input_dev, BTN_TOUCH, finger_num > 0);
@@ -1091,6 +1092,7 @@ static int __devinit mxt_probe(struct i2c_client *client,
0, data->y_size, 0, 0);
/* For multi touch */
+ input_mt_init_slots(input_dev, MXT_MAX_FINGER);
input_set_abs_params(input_dev, ABS_MT_TOUCH_MAJOR,
0, MXT_MAX_AREA, 0, 0);
input_set_abs_params(input_dev, ABS_MT_POSITION_X,
--
1.7.0.4
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