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Commit 836a4745 authored by Mohan Pallaka's avatar Mohan Pallaka Committed by Sudhakar Manapati
Browse files

input: ft5x06_ts: Add support for protocol B 



Focaltech touchscreen chips can use MT protocol B
because they can assign unique id to ABS_MT_TRACKING_ID
from finger id provided by hardware.

  This patch is propagated from 3.4 kernel
    commit: 959a69abf90810b9267dc7936f118c2fca6edf4c
    input: ft5x06_ts: Add support for protocol B

Change-Id: I7f236d819eb805934e12faedaf84407b9de95c0e
Signed-off-by: default avatarMohan Pallaka <mpallaka@codeaurora.org>
Signed-off-by: default avatarShantanu Jain <shjain@codeaurora.org>
parent 0804395c

drivers/input/touchscreen/ft5x06_ts.c

+18 −13
Original line number Diff line number Diff line
@@ -18,6 +18,7 @@ 


#include <linux/i2c.h>

#include <linux/input.h>

#include <linux/input/mt.h>

#include <linux/slab.h>

#include <linux/interrupt.h>

#include <linux/delay.h>
@@ -298,6 +299,11 @@ static void ft5x06_report_value(struct ft5x06_ts_data *data) 
			event->pressure = 0;

		}



		input_mt_slot(data->input_dev, i);

		input_mt_report_slot_state(data->input_dev, MT_TOOL_FINGER,

					!!event->pressure);



		if (event->pressure == FT_PRESS) {

			input_report_abs(data->input_dev, ABS_MT_POSITION_X,

					 event->x[i]);

			input_report_abs(data->input_dev, ABS_MT_POSITION_Y,
@@ -308,7 +314,7 @@ static void ft5x06_report_value(struct ft5x06_ts_data *data) 
					 event->finger_id[i]);

			input_report_abs(data->input_dev, ABS_MT_TOUCH_MAJOR,

					 event->pressure);

		input_mt_sync(data->input_dev);

		}

	}



	input_report_key(data->input_dev, BTN_TOUCH, !!fingerdown);
@@ -1187,12 +1193,11 @@ static int ft5x06_ts_probe(struct i2c_client *client, 
	__set_bit(BTN_TOUCH, input_dev->keybit);

	__set_bit(INPUT_PROP_DIRECT, input_dev->propbit);



	input_mt_init_slots(input_dev, CFG_MAX_TOUCH_POINTS);

	input_set_abs_params(input_dev, ABS_MT_POSITION_X, pdata->x_min,

			     pdata->x_max, 0, 0);

	input_set_abs_params(input_dev, ABS_MT_POSITION_Y, pdata->y_min,

			     pdata->y_max, 0, 0);

	input_set_abs_params(input_dev, ABS_MT_TRACKING_ID, 0,

			     CFG_MAX_TOUCH_POINTS, 0, 0);

	input_set_abs_params(input_dev, ABS_MT_TOUCH_MAJOR, 0, FT_PRESS, 0, 0);

	input_set_abs_params(input_dev, ABS_MT_PRESSURE, 0, FT_PRESS, 0, 0);