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Commit 59a666fb authored by Himanshu Aggarwal's avatar Himanshu Aggarwal Committed by Gerrit - the friendly Code Review server
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input: touchscreen: add protocol A support to ITE tech driver 



Add multi-touch protocol A support to ITE tech touchscreen
driver.

Change-Id: I49bc7e3eaa3b266fe92bb209f56ae5a1b40675e0
Signed-off-by: default avatarHimanshu Aggarwal <haggarwa@codeaurora.org>
Signed-off-by: default avatarShantanu Jain <shjain@codeaurora.org>
parent a444cab6

drivers/input/touchscreen/it7258_ts_i2c.c

+17 −18
Original line number Diff line number Diff line
@@ -715,7 +715,7 @@ static void readFingerData(uint16_t *xP, uint16_t *yP, uint8_t *pressureP, 
		*pressureP = fd->pressure & FD_PRESSURE_BITS;

}



static void readTouchDataPoint(void)

static irqreturn_t IT7260_ts_threaded_handler(int irq, void *devid)

{

	struct PointData pointData;

	uint8_t devStatus;
@@ -725,49 +725,46 @@ static void readTouchDataPoint(void) 
	/* verify there is point data to read & it is readable and valid */

	i2cReadNoReadyCheck(BUF_QUERY, &devStatus, sizeof(devStatus));

	if (!((devStatus & PT_INFO_BITS) & PT_INFO_YES)) {

		pr_err("readTouchDataPoint() called when no data available (0x%02X)\n",

								devStatus);

		return;

		return IRQ_HANDLED;

	}

	if (!i2cReadNoReadyCheck(BUF_POINT_INFO, (void *)&pointData,

						sizeof(pointData))) {

		pr_err("readTouchDataPoint() failed to read point data buffer\n");

		return;

		dev_err(&gl_ts->client->dev,

			"readTouchDataPoint() failed to read point data buffer\n");

		return IRQ_HANDLED;

	}

	if ((pointData.flags & PD_FLAGS_DATA_TYPE_BITS) !=

					PD_FLAGS_DATA_TYPE_TOUCH) {

		pr_err("readTouchDataPoint() dropping non-point data of type 0x%02X\n",

		dev_err(&gl_ts->client->dev,

			"readTouchDataPoint() dropping non-point data of type 0x%02X\n",

							pointData.flags);

		return;

		return IRQ_HANDLED;

	}



	if ((pointData.flags & PD_FLAGS_HAVE_FINGERS) & 1)

		readFingerData(&x, &y, &pressure, pointData.fd);



	if (pressure >= FD_PRESSURE_LIGHT) {



		if (!hadFingerDown)

			hadFingerDown = true;



		readFingerData(&x, &y, &pressure, pointData.fd);



		input_report_abs(gl_ts->input_dev, ABS_X, x);

		input_report_abs(gl_ts->input_dev, ABS_Y, y);

		input_report_key(gl_ts->input_dev, BTN_TOUCH, 1);

		input_report_abs(gl_ts->input_dev, ABS_MT_POSITION_X, x);

		input_report_abs(gl_ts->input_dev, ABS_MT_POSITION_Y, y);

		input_mt_sync(gl_ts->input_dev);

		input_sync(gl_ts->input_dev);





	} else if (hadFingerDown) {

		hadFingerDown = false;



		input_report_key(gl_ts->input_dev, BTN_TOUCH, 0);

		input_mt_sync(gl_ts->input_dev);

		input_sync(gl_ts->input_dev);

	}



}



static irqreturn_t IT7260_ts_threaded_handler(int irq, void *devid)

{

	readTouchDataPoint();

	return IRQ_HANDLED;

}
@@ -954,8 +951,10 @@ static int IT7260_ts_probe(struct i2c_client *client, 
	set_bit(KEY_SLEEP,input_dev->keybit);

	set_bit(KEY_WAKEUP,input_dev->keybit);

	set_bit(KEY_POWER,input_dev->keybit);

	input_set_abs_params(input_dev, ABS_X, 0, SCREEN_X_RESOLUTION, 0, 0);

	input_set_abs_params(input_dev, ABS_Y, 0, SCREEN_Y_RESOLUTION, 0, 0);

	input_set_abs_params(input_dev, ABS_MT_POSITION_X, 0,

				SCREEN_X_RESOLUTION, 0, 0);

	input_set_abs_params(input_dev, ABS_MT_POSITION_Y, 0,

				SCREEN_Y_RESOLUTION, 0, 0);

	input_set_drvdata(gl_ts->input_dev, gl_ts);



	if (input_register_device(input_dev)) {