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Commit 8b86c1c2 authored by Joonyoung Shim's avatar Joonyoung Shim Committed by Dmitry Torokhov
Browse files

Input: atmel_mxt_ts - convert to MT protocol B 



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: default avatarJoonyoung Shim <jy0922.shim@samsung.com>
Reviewed-by: default avatarHenrik Rydberg <rydberg@euromail.se>
Signed-off-by: default avatarDmitry Torokhov <dtor@mail.ru>
parent 08960a07

drivers/input/touchscreen/atmel_mxt_ts.c

+15 −12
Original line number Diff line number Diff line
@@ -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 +504,21 @@ static void mxt_input_report(struct mxt_data *data, int single_id) 
		if (!finger[id].status)

			continue;



		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_num++;

			input_report_abs(input_dev, ABS_MT_TOUCH_MAJOR,

				finger[id].status != MXT_RELEASE ?

				finger[id].area : 0);

					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);

		input_mt_sync(input_dev);



		if (finger[id].status == MXT_RELEASE)

		} else {

			finger[id].status = 0;

		else

			finger_num++;

		}

	}



	input_report_key(input_dev, BTN_TOUCH, finger_num > 0);
@@ -1094,6 +1096,7 @@ static int __devinit mxt_probe(struct i2c_client *client, 
			     0, data->max_y, 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,