/**
  * fts.c
  *
  * FTS Capacitive touch screen controller (FingerTipS)
  *
  * Copyright (C) 2016, STMicroelectronics Limited.
  * Authors: AMG(Analog Mems Group)
  *
  *		marco.cali@st.com
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 as
  * published by the Free Software Foundation.
  *
  * THE PRESENT SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES
  * OR CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED, FOR THE SOLE
  * PURPOSE TO SUPPORT YOUR APPLICATION DEVELOPMENT.
  * AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY DIRECT,
  * INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM
  * THE CONTENT OF SUCH SOFTWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
  * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
  *
  * THIS SOFTWARE IS SPECIFICALLY DESIGNED FOR EXCLUSIVE USE WITH ST PARTS.
  */


/*!
  * \file fts.c
  * \brief It is the main file which contains all the most important functions
  * generally used by a device driver the driver
  */
#include <linux/device.h>

#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/string.h>
#include <linux/ctype.h>
#include <linux/slab.h>
#include <linux/input.h>
#include <linux/input/mt.h>
#include <linux/interrupt.h>
#include <linux/hrtimer.h>
#include <linux/delay.h>
#include <linux/firmware.h>
#include <linux/i2c.h>
#include <linux/i2c-dev.h>
#include <linux/spi/spi.h>
#include <linux/completion.h>
#include <linux/device.h>

#include <linux/gpio.h>
#include <linux/of_gpio.h>
#include <linux/regulator/consumer.h>

#include <linux/notifier.h>
#include <linux/msm_drm_notify.h>

#ifdef KERNEL_ABOVE_2_6_38
#include <linux/input/mt.h>
#endif


#include "fts.h"
#include "fts_lib/ftsCompensation.h"
#include "fts_lib/ftsCore.h"
#include "fts_lib/ftsIO.h"
#include "fts_lib/ftsError.h"
#include "fts_lib/ftsFlash.h"
#include "fts_lib/ftsFrame.h"
#include "fts_lib/ftsGesture.h"
#include "fts_lib/ftsTest.h"
#include "fts_lib/ftsTime.h"
#include "fts_lib/ftsTool.h"

/* Touch simulation MT slot */
#define TOUCHSIM_SLOT_ID		0
#define TOUCHSIM_TIMER_INTERVAL_NS	8333333

/* Switch GPIO values */
#define FTS_SWITCH_GPIO_VALUE_SLPI_MASTER 	0
#define FTS_SWITCH_GPIO_VALUE_AP_MASTER 	1

/**
  * Event handler installer helpers
  */
#define event_id(_e)		(EVT_ID_##_e >> 4)
#define handler_name(_h)	fts_##_h##_event_handler

#define install_handler(_i, _evt, _hnd) \
	do { \
		_i->event_dispatch_table[event_id(_evt)] = handler_name(_hnd); \
	} while (0)


/* Use decimal-formatted raw data */
#define RAW_DATA_FORMAT_DEC

#ifdef KERNEL_ABOVE_2_6_38
#define TYPE_B_PROTOCOL
#endif

extern SysInfo systemInfo;
extern TestToDo tests;
#ifdef GESTURE_MODE
extern struct mutex gestureMask_mutex;
#endif

char fts_ts_phys[64];	/* /< buffer which store the input device name
			  *	assigned by the kernel */

static u8 typeOfCommand[CMD_STR_LEN];	/* /< buffer used to store the
					 * command sent from the MP
					 * device file node */
static int numberParameters;	/* /< number of parameter passed through the MP
				  * device file node */
#ifdef USE_ONE_FILE_NODE
static int feature_feasibility = ERROR_OP_NOT_ALLOW;
#endif
#ifdef GESTURE_MODE
static u8 mask[GESTURE_MASK_SIZE + 2];
extern u16 gesture_coordinates_x[GESTURE_MAX_COORDS_PAIRS_REPORT];
extern u16 gesture_coordinates_y[GESTURE_MAX_COORDS_PAIRS_REPORT];
extern int gesture_coords_reported;
extern struct mutex gestureMask_mutex;
#endif

#ifdef PHONE_KEY
static u8 key_mask;	/* /< store the last update of the key mask
				  * published by the IC */
#endif

extern spinlock_t fts_int;

static int fts_init_sensing(struct fts_ts_info *info);
static int fts_mode_handler(struct fts_ts_info *info, int force);

static int fts_chip_initialization(struct fts_ts_info *info, int init_type);

/**
  * Release all the touches in the linux input subsystem
  * @param info pointer to fts_ts_info which contains info about device/hw setup
  */
void release_all_touches(struct fts_ts_info *info)
{
	unsigned int type = MT_TOOL_FINGER;
	int i;

	for (i = 0; i < TOUCH_ID_MAX; i++) {
#ifdef STYLUS_MODE
		if (test_bit(i, &info->stylus_id))
			type = MT_TOOL_PEN;
		else
			type = MT_TOOL_FINGER;
#endif
		input_mt_slot(info->input_dev, i);
		input_report_abs(info->input_dev, ABS_MT_PRESSURE, 0);
		input_mt_report_slot_state(info->input_dev, type, 0);
		input_report_abs(info->input_dev, ABS_MT_TRACKING_ID, -1);
	}
	input_report_key(info->input_dev, BTN_TOUCH, 0);
	input_sync(info->input_dev);
	info->touch_id = 0;
#ifdef STYLUS_MODE
	info->stylus_id = 0;
#endif
}


/**
  * @defgroup file_nodes Driver File Nodes
  * Driver publish a series of file nodes used to provide several utilities
  * to the host and give him access to different API.
  * @{
  */

/**
  * @defgroup device_file_nodes Device File Nodes
  * @ingroup file_nodes
  * Device File Nodes \n
  * There are several file nodes that are associated to the device and which
  *  are designed to be used by the host to enable/disable features or trigger
  * some system specific actions \n
  * Usually their final path depend on the definition of device tree node of
  * the IC (e.g /sys/devices/soc.0/f9928000.i2c/i2c-6/6-0049)
  * @{
  */
/***************************************** FW UPGGRADE
 * ***************************************************/

/**
  * File node function to Update firmware from shell \n
  * echo path_to_fw X Y > fwupdate   perform a fw update \n
  * where: \n
  * path_to_fw = file name or path of the the FW to burn, if "NULL" the default
  * approach selected in the driver will be used\n
  * X = 0/1 to force the FW update whichever fw_version and config_id;
  * 0=perform a fw update only if the fw in the file is newer than the fw in the
  * chip \n
  * Y = 0/1 keep the initialization data; 0 = will erase the initialization data
  * from flash, 1 = will keep the initialization data
  * the string returned in the shell is made up as follow: \n
  * { = start byte \n
  * X1X2X3X4 = 4 bytes in HEX format which represent an error code (00000000 no
  * error) \n
  * } = end byte
  */
static ssize_t fts_fwupdate_store(struct device *dev,
				struct device_attribute *attr,
				const char *buf, size_t count)
{
	int ret, mode[2];
	char path[100 + 1]; /* extra byte to hold '\0'*/
	struct fts_ts_info *info = dev_get_drvdata(dev);

	/* default(if not specified by user) set force = 0 and keep_cx to 1 */
	mode[0] = 0;
	mode[1] = 1;

	/* reading out firmware upgrade parameters */
	sscanf(buf, "%100s %d %d", path, &mode[0], &mode[1]);
	pr_info("fts_fwupdate_store: path = %s\n", path);

	fts_set_bus_ref(info, FTS_BUS_REF_SYSFS, true);

	if (info->sensor_sleep)
		ret = ERROR_BUS_WR;
	else
		ret = flashProcedure(path, mode[0], mode[1]);

	info->fwupdate_stat = ret;

	fts_set_bus_ref(info, FTS_BUS_REF_SYSFS, false);

	if (ret == ERROR_BUS_WR)
		pr_err("%s: bus is not accessible. ERROR %08X\n",
			__func__, ret);
	else if (ret < OK)
		pr_err("%s Unable to upgrade firmware! ERROR %08X\n",
			__func__, ret);

	return count;
}

static ssize_t fts_fwupdate_show(struct device *dev,
				struct device_attribute *attr, char *buf)
{
	struct fts_ts_info *info = dev_get_drvdata(dev);

	/* fwupdate_stat: ERROR code Returned by flashProcedure. */
	return scnprintf(buf, PAGE_SIZE, "{ %08X }\n", info->fwupdate_stat);
}


/***************************************** UTILITIES
  * (current fw_ver/conf_id, active mode, file fw_ver/conf_id)
  ***************************************************/
/**
  * File node to show on terminal external release version in Little Endian \n
  * (first the less significant byte) \n
  * cat appid	show the external release version of the FW running in the IC
  */
static ssize_t fts_appid_show(struct device *dev, struct device_attribute *attr,
			      char *buf)
{
	int error;
	char temp[100];

	error = scnprintf(buf,
			  PAGE_SIZE,
			  "%s\n",
			  printHex("ST-V",
				   systemInfo.u8_releaseInfo,
				   EXTERNAL_RELEASE_INFO_SIZE,
				   temp,
				   sizeof(temp)));

	return error;
}

/**
  * File node to show on terminal the mode that is active on the IC \n
  * cat mode_active		    to show the bitmask which indicate
  * the modes/features which are running on the IC in a specific instant of time
  * the string returned in the shell is made up as follow: \n
  * { = start byte \n
  * X1 = 1 byte in HEX format which represent the actual running scan mode
  * (@link scan_opt Scan Mode Options @endlink) \n
  * X2 = 1 byte in HEX format which represent the bitmask on which is running
  * the actual scan mode \n
  * X3X4 = 2 bytes in HEX format which represent a bitmask of the features that
  * are enabled at this moment (@link feat_opt Feature Selection Options
  * @endlink) \n
  * } = end byte
  * @see fts_mode_handler()
  */
static ssize_t fts_mode_active_show(struct device *dev,
				struct device_attribute *attr, char *buf)
{
	struct fts_ts_info *info = dev_get_drvdata(dev);

	pr_info("Current mode active = %08X\n", info->mode);
	return scnprintf(buf, PAGE_SIZE, "{ %08X }\n", info->mode);
}

/**
  * File node to show the fw_ver and config_id of the FW file
  * cat fw_file_test			show on the kernel log external release
  * of the FW stored in the fw file/header file
  */
static ssize_t fts_fw_test_show(struct device *dev,
				struct device_attribute *attr, char *buf)
{
	struct fts_ts_info *info = dev_get_drvdata(dev);
	Firmware fw;
	int ret;
	char temp[100] = { 0 };

	fw.data = NULL;
	ret = readFwFile(info->board->fw_name, &fw, 0);

	if (ret < OK)
		pr_err("Error during reading FW file! ERROR %08X\n", ret);
	else
		pr_info("%s, size = %d bytes\n",
			 printHex("EXT Release = ",
				  systemInfo.u8_releaseInfo,
				  EXTERNAL_RELEASE_INFO_SIZE,
				  temp,
				  sizeof(temp)),
			 fw.data_size);
	kfree(fw.data);
	return 0;
}

static ssize_t fts_status_show(struct device *dev,
			       struct device_attribute *attr, char *buf)
{
	struct fts_ts_info *info = dev_get_drvdata(dev);
	u8 *dump = NULL;
	int dumpSize = ERROR_DUMP_ROW_SIZE * ERROR_DUMP_COL_SIZE;
	u8 reg;
	int written = 0;
	int res;
	int i;

	if (fts_set_bus_ref(info, FTS_BUS_REF_SYSFS, true) < 0) {
		pr_err("%s: bus is not accessible.\n", __func__);
		written += scnprintf(buf, PAGE_SIZE,
				     "Bus is not accessible.\n");
		goto exit;
	}

	written += scnprintf(buf + written, PAGE_SIZE - written,
			     "Mode: 0x%08X\n", info->mode);

	res = fts_writeReadU8UX(FTS_CMD_HW_REG_R, ADDR_SIZE_HW_REG, ADDR_ICR,
				&reg, 1, DUMMY_HW_REG);
	if (res < 0)
		pr_err("%s: failed to read ICR.\n", __func__);
	else
		written += scnprintf(buf + written, PAGE_SIZE - written,
			     "ICR: 0x%02X\n", reg);

	dump = kzalloc(dumpSize, GFP_KERNEL);
	if (!dump) {
		written += strlcat(buf + written, "Buffer allocation failed!\n",
				   PAGE_SIZE - written);
		goto exit;
	}

	res = dumpErrorInfo(dump, ERROR_DUMP_ROW_SIZE * ERROR_DUMP_COL_SIZE);
	if (res >= 0) {
		written += strlcat(buf + written, "Error dump:",
				   PAGE_SIZE - written);
		for (i = 0; i < dumpSize; i++) {
			if (i % 8 == 0)
				written += scnprintf(buf + written,
						     PAGE_SIZE - written,
						     "\n%02X: ", i);
			written += scnprintf(buf + written,
					     PAGE_SIZE - written,
					     "%02X ", dump[i]);
		}
		written += strlcat(buf + written, "\n", PAGE_SIZE - written);
	}

exit:
	kfree(dump);
	fts_set_bus_ref(info, FTS_BUS_REF_SYSFS, false);
	return written;
}

#if 0
/**
  * File node to obtain and show strength frame
  * cat strength_frame			to obtain strength data \n
  * the string returned in the shell is made up as follow: \n
  * { = start byte \n
  * X1X2X3X4 = 4 bytes in HEX format which represent an error code (00000000 no
  *error) \n
  * **** if error code is all 0s **** \n
  * FF = 1 byte in HEX format number of rows \n
  * SS = 1 byte in HEX format number of columns \n
  * N1, ... = the decimal value of each node separated by a coma \n
  * ********************************* \n
  * } = end byte
  */
static ssize_t fts_strength_frame_show(struct device *dev,
				struct device_attribute *attr, char *buf)
{
	MutualSenseFrame frame;
	int res, count, j, size = (6 * 2) + 1, index = 0;
	char *all_strbuff = NULL;
	/* char buff[CMD_STR_LEN] = {0}; */
	/* struct i2c_client *client = to_i2c_client(dev); */
	struct fts_ts_info *info = dev_get_drvdata(dev);

	frame.node_data = NULL;

	res = fts_disableInterrupt();
	if (res < OK)
		goto END;

	res = senseOn();
	if (res < OK) {
		pr_err("%s: could not start scanning! ERROR %08X\n",
			__func__, res);
		goto END;
	}
	mdelay(WAIT_FOR_FRESH_FRAMES);
	res = senseOff();
	if (res < OK) {
		pr_err("%s: could not finish scanning! ERROR %08X\n",
			__func__, res);
		goto END;
	}

	mdelay(WAIT_AFTER_SENSEOFF);
	flushFIFO();

	res = getMSFrame3(MS_STRENGTH, &frame);
	if (res < OK) {
		pr_err("%s: could not get the frame! ERROR %08X\n",
			__func__, res);
		goto END;
	} else {
		size += (res * 6);
		pr_info("The frame size is %d words\n", res);
		res = OK;
		print_frame_short("MS Strength frame =", array1dTo2d_short(
					  frame.node_data, frame.node_data_size,
					  frame.header.sense_node),
				  frame.header.force_node,
				  frame.header.sense_node);
	}

END:
	flushFIFO();
	release_all_touches(info);
	fts_mode_handler(info, 1);

	all_strbuff = (char *)kzalloc(size * sizeof(char), GFP_KERNEL);

	if (all_strbuff != NULL) {
		snprintf(&all_strbuff[index], 11, "{ %08X", res);

		index += 10;

		if (res >= OK) {
			snprintf(&all_strbuff[index], 3, "%02X",
				 (u8)frame.header.force_node);
			index += 2;
			snprintf(&all_strbuff[index], 3, "%02X",
				 (u8)frame.header.sense_node);

			index += 2;

			for (j = 0; j < frame.node_data_size; j++) {
				snprintf(&all_strbuff[index], 10, "%d,%n",
					 frame.node_data[j], &count);
				index += count;
			}

			kfree(frame.node_data);
		}

		snprintf(&all_strbuff[index], 3, " }");
		index += 2;

		count = snprintf(buf, TSP_BUF_SIZE, "%s\n", all_strbuff);
		kfree(all_strbuff);
	} else
		pr_err("%s: Unable to allocate all_strbuff! ERROR %08X\n",
			__func__, ERROR_ALLOC);

	fts_enableInterrupt();
	return count;
}
#endif

/***************************************** FEATURES
  ***************************************************/

/* TODO: edit this function according to the features policy to allow during
  * the screen on/off, following is shown an example but check always with ST
  * for more details */
/**
  * Check if there is any conflict in enable/disable a particular feature
  * considering the features already enabled and running
  * @param info pointer to fts_ts_info which contains info about the device
  * and its hw setup
  * @param feature code of the feature that want to be tested
  * @return OK if is possible to enable/disable feature, ERROR_OP_NOT_ALLOW
  * in case of any other conflict
  */
int check_feature_feasibility(struct fts_ts_info *info, unsigned int feature)
{
	int res = OK;

/* Example based on the status of the screen and on the feature
  * that is trying to enable */
	/*res=ERROR_OP_NOT_ALLOW;
	  * if(info->resume_bit ==0){
	  *      switch(feature){
	  #ifdef GESTURE_MODE
	  *              case FEAT_SEL_GESTURE:
	  *                      res = OK;
	  *              break;
	  #endif
	  *              default:
	  *                      pr_err("%s: Feature not allowed in this
	  * operating mode! ERROR %08X\n", __func__, res);
	  *              break;
	  *
	  *      }
	  * }else{
	  *      switch(feature){
	  #ifdef GESTURE_MODE
	  *              case FEAT_SEL_GESTURE:
	  #endif
	  *              case FEAT__SEL_GLOVE: // glove mode can only activate
	  *during sense on
	  *                      res = OK;
	  *              break;
	  *
	  *              default:
	  *                      pr_err("%s: Feature not allowed in this
	  * operating mode! ERROR %08X\n", __func__, res);
	  *              break;
	  *
	  *      }
	  * }*/


/* Example based only on the feature that is going to be activated */
	switch (feature) {
	case FEAT_SEL_GESTURE:
		if (info->cover_enabled == 1) {
			res = ERROR_OP_NOT_ALLOW;
			pr_err("%s: Feature not allowed when in Cover mode! ERROR %08X\n",
				__func__, res);
			/* for example here can be placed a code for disabling
			  * the cover mode when gesture is activated */
		}
		break;

	case FEAT_SEL_GLOVE:
		if (info->gesture_enabled == 1) {
			res = ERROR_OP_NOT_ALLOW;
			pr_err("%s: Feature not allowed when Gestures enabled! ERROR %08X\n",
				__func__, res);
			/* for example here can be placed a code for disabling
			  * the gesture mode when cover is activated
			  * (that means that cover mode has
			  * an higher priority on gesture mode) */
		}
		break;

	default:
		pr_info("%s: Feature Allowed!\n", __func__);
	}

	return res;
}

#ifdef USE_ONE_FILE_NODE
/**
  * File node to enable some feature
  * echo XX 00/01 > feature_enable		to enable/disable XX
  * (possible values @link feat_opt Feature Selection Options @endlink) feature
  * cat feature_enable		to show the result of enabling/disabling process
  * echo 01/00 > feature_enable; cat feature_enable		to perform
  * both actions stated before in just one call \n
  * the string returned in the shell is made up as follow: \n
  * { = start byte \n
  * X1X2X3X4 = 4 bytes in HEX format which represent an error code (00000000 =
  * no error) \n
  * } = end byte
  */
static ssize_t fts_feature_enable_store(struct device *dev,
				struct device_attribute *attr, const char *buf,
				size_t count)
{
	struct fts_ts_info *info = dev_get_drvdata(dev);
	char *p = (char *)buf;
	unsigned int temp;
	int res = OK;

	if (fts_set_bus_ref(info, FTS_BUS_REF_SYSFS, true) < 0) {
		res = ERROR_BUS_WR;
		pr_err("%s: bus is not accessible.", __func__);
		fts_set_bus_ref(info, FTS_BUS_REF_SYSFS, false);
		return count;
	}

	if ((count - 2 + 1) / 3 != 1)
		pr_err("fts_feature_enable: Number of parameter wrong! %d > %d\n",
			(count - 2 + 1) / 3, 1);
	else {
		sscanf(p, "%02X ", &temp);
		p += 3;
		res = check_feature_feasibility(info, temp);
		if (res >= OK) {
			switch (temp) {
	#ifdef GESTURE_MODE
			case FEAT_SEL_GESTURE:
				sscanf(p, "%02X ", &info->gesture_enabled);
				pr_info("fts_feature_enable: Gesture Enabled = %d\n",
					info->gesture_enabled);
				break;
	#endif

	#ifdef GLOVE_MODE
			case FEAT_SEL_GLOVE:
				sscanf(p, "%02X ", &info->glove_enabled);
				pr_info("fts_feature_enable: Glove Enabled = %d\n",
					info->glove_enabled);
				break;
	#endif

	#ifdef STYLUS_MODE
			case FEAT_SEL_STYLUS:
				sscanf(p, "%02X ", &info->stylus_enabled);
				pr_info("fts_feature_enable: Stylus Enabled = %d\n",
					info->stylus_enabled);
				break;
	#endif

	#ifdef COVER_MODE
			case FEAT_SEL_COVER:
				sscanf(p, "%02X ", &info->cover_enabled);
				pr_info("fts_feature_enable: Cover Enabled = %d\n",
					info->cover_enabled);
				break;
	#endif

	#ifdef CHARGER_MODE
			case FEAT_SEL_CHARGER:
				sscanf(p, "%02X ", &info->charger_enabled);
				pr_info("fts_feature_enable: Charger Enabled = %d\n",
					info->charger_enabled);
				break;
	#endif

	#ifdef GRIP_MODE
			case FEAT_SEL_GRIP:
				sscanf(p, "%02X ", &info->grip_enabled);
				pr_info("fts_feature_enable: Grip Enabled = %d\n",
					info->grip_enabled);
				break;
	#endif


			default:
				pr_err("fts_feature_enable: Feature %08X not valid! ERROR %08X\n",
					temp, ERROR_OP_NOT_ALLOW);
				res = ERROR_OP_NOT_ALLOW;
			}
			feature_feasibility = res;
		}
		if (feature_feasibility >= OK)
			feature_feasibility = fts_mode_handler(info, 1);
		else
			pr_err("%s: Call echo XX 00/01 > feature_enable with a correct feature value (XX)! ERROR %08X\n",
				__func__, res);
	}

	fts_set_bus_ref(info, FTS_BUS_REF_SYSFS, false);
	return count;
}


static ssize_t fts_feature_enable_show(struct device *dev,
				       struct device_attribute *attr, char *buf)
{
	int count = 0;

	if (feature_feasibility < OK)
		pr_err("%s: Call before echo XX 00/01 > feature_enable with a correct feature value (XX)! ERROR %08X\n",
			__func__, feature_feasibility);

	count += scnprintf(buf + count,
			   PAGE_SIZE - count, "{ %08X }\n",
			   feature_feasibility);

	feature_feasibility = ERROR_OP_NOT_ALLOW;
	return count;
}

#else


#ifdef GRIP_MODE
/**
  * File node to set the grip mode
  * echo 01/00 > grip_mode	to enable/disable glove mode \n
  * cat grip_mode		to show the status of the grip_enabled switch \n
  * echo 01/00 > grip_mode; cat grip_mode		to enable/disable grip
  *mode
  * and see the switch status in just one call \n
  * the string returned in the shell is made up as follow: \n
  * { = start byte \n
  * X1X2X3X4 = 4 bytes in HEX format which represent the value
  * info->grip_enabled (1 = enabled; 0= disabled) \n
  * } = end byte
  */
static ssize_t fts_grip_mode_show(struct device *dev,
				struct device_attribute *attr, char *buf)
{
	int count = 0;

	struct fts_ts_info *info = dev_get_drvdata(dev);

	pr_info("%s: grip_enabled = %d\n", __func__,
		 info->grip_enabled);

	count += scnprintf(buf + count,
			   PAGE_SIZE - count, "{ %08X }\n",
			   info->grip_enabled);

	return count;
}


static ssize_t fts_grip_mode_store(struct device *dev,
				struct device_attribute *attr,
				const char *buf, size_t count)
{
	char *p = (char *)buf;
	unsigned int temp = FEAT_DISABLE;
	int res;
	struct fts_ts_info *info = dev_get_drvdata(dev);
	ssize_t retval = count;

	if (fts_set_bus_ref(info, FTS_BUS_REF_SYSFS, true) < 0) {
		pr_err("%s: bus is not accessible.", __func__);
		goto exit;
	}

	/* in case of a different elaboration of the input, just modify
	  * this initial part of the code according to customer needs */
	if ((count + 1) / 3 != 1)
		pr_err("%s: Number of bytes of parameter wrong! %zu != 1 byte\n",
			__func__, (count + 1) / 3);
	else {
		res = sscanf(p, "%02X ", &temp);
		if ((res != 1) || (temp > FEAT_ENABLE)) {
			pr_err("%s: Missing or invalid grip mode(%u)\n",
				__func__, temp);
			retval = -EINVAL;
			goto exit;
		}

/* standard code that should be always used when a feature is enabled! */
/* first step : check if the wanted feature can be enabled */
/* second step: call fts_mode_handler to actually enable it */
/* NOTE: Disabling a feature is always allowed by default */
		res = check_feature_feasibility(info, FEAT_SEL_GRIP);
		if (res >= OK || temp == FEAT_DISABLE) {
			info->grip_enabled = temp;
			res = fts_mode_handler(info, 1);
			if (res < OK)
				pr_err("%s: Error during fts_mode_handler! ERROR %08X\n",
					__func__, res);
		}
	}

exit:
	fts_set_bus_ref(info, FTS_BUS_REF_SYSFS, false);
	return retval;
}
#endif

#ifdef CHARGER_MODE
/**
  * File node to set the glove mode
  * echo XX/00 > charger_mode		to value >0 to enable
  * (possible values: @link charger_opt Charger Options @endlink),
  * 00 to disable charger mode \n
  * cat charger_mode	to show the status of the charger_enabled switch \n
  * echo 01/00 > charger_mode; cat charger_mode		to enable/disable
  * charger mode and see the switch status in just one call \n
  * the string returned in the shell is made up as follow: \n
  * { = start byte \n
  * X1X2X3X4 = 4 bytes in HEX format which represent the value
  * info->charger_enabled (>0 = enabled; 0= disabled) \n
  * } = end byte
  */
static ssize_t fts_charger_mode_show(struct device *dev,
				struct device_attribute *attr, char *buf)
{
	int count = 0;
	struct fts_ts_info *info = dev_get_drvdata(dev);

	pr_info("%s: charger_enabled = %d\n", __func__,
		 info->charger_enabled);

	count += scnprintf(buf + count,
			   PAGE_SIZE - count, "{ %08X }\n",
			   info->charger_enabled);
	return count;
}


static ssize_t fts_charger_mode_store(struct device *dev,
				struct device_attribute *attr,
				const char *buf, size_t count)
{
	char *p = (char *)buf;
	unsigned int temp = FEAT_DISABLE;
	int res;
	struct fts_ts_info *info = dev_get_drvdata(dev);
	ssize_t retval = count;

	if (fts_set_bus_ref(info, FTS_BUS_REF_SYSFS, true) < 0) {
		pr_err("%s: bus is not accessible.\n", __func__);
		goto exit;
	}

/* in case of a different elaboration of the input, just modify this
  * initial part of the code according to customer needs */
	if ((count + 1) / 3 != 1) {
		pr_err("%s: Number of bytes of parameter wrong! %zu != 1 byte\n",
			__func__, (count + 1) / 3);
		retval = -EINVAL;
	} else {
		res = sscanf(p, "%02X ", &temp);
		if ((res != 1) || (temp > FEAT_ENABLE)) {
			pr_err("%s: Missing or invalid charger mode (%u)\n",
				__func__, temp);
			retval = -EINVAL;
			goto exit;
		}

/** standard code that should be always used when a feature is enabled!
  * first step : check if the wanted feature can be enabled
  * second step: call fts_mode_handler to actually enable it
  * NOTE: Disabling a feature is always allowed by default
  */
		res = check_feature_feasibility(info, FEAT_SEL_CHARGER);
		if (res >= OK || temp == FEAT_DISABLE) {
			info->charger_enabled = temp;
			res = fts_mode_handler(info, 1);
			if (res < OK)
				pr_err("%s: Error during fts_mode_handler! ERROR %08X\n",
					__func__, res);
		}
	}

exit:
	fts_set_bus_ref(info, FTS_BUS_REF_SYSFS, false);
	return retval;
}
#endif

#ifdef GLOVE_MODE
/**
  * File node to set the glove mode
  * echo 01/00 > glove_mode	to enable/disable glove mode \n
  * cat glove_mode	to show the status of the glove_enabled switch \n
  * echo 01/00 > glove_mode; cat glove_mode	to enable/disable glove mode and
  *  see the switch status in just one call \n
  * the string returned in the shell is made up as follow: \n
  * { = start byte \n
  * X1X2X3X4 = 4 bytes in HEX format which represent the of value
  * info->glove_enabled (1 = enabled; 0= disabled) \n
  * } = end byte
  */
static ssize_t fts_glove_mode_show(struct device *dev,
				struct device_attribute *attr, char *buf)
{
	int count = 0;
	struct fts_ts_info *info = dev_get_drvdata(dev);

	pr_info("%s: glove_enabled = %d\n", __func__, info->glove_enabled);

	count += scnprintf(buf + count,
			   PAGE_SIZE - count, "{ %08X }\n",
			   info->glove_enabled);

	return count;
}


static ssize_t fts_glove_mode_store(struct device *dev,
				struct device_attribute *attr, const char *buf,
				size_t count)
{
	char *p = (char *)buf;
	unsigned int temp = FEAT_DISABLE;
	int res;
	struct fts_ts_info *info = dev_get_drvdata(dev);
	ssize_t retval = count;

	if (fts_set_bus_ref(info, FTS_BUS_REF_SYSFS, true) < 0) {
		pr_err("%s: bus is not accessible.\n", __func__);
		goto exit;
	}

/* in case of a different elaboration of the input, just modify this
  * initial part of the code according to customer needs */
	if ((count + 1) / 3 != 1) {
		pr_err("%s: Number of bytes of parameter wrong! %zu != 1 byte\n",
			__func__, (count + 1) / 3);
		retval = -EINVAL;
	} else {
		res = sscanf(p, "%02X ", &temp);
		if ((res != 1) || (temp > FEAT_ENABLE)) {
			pr_err("%s: Missing or invalid glove mode(%u)\n",
				__func__, temp);
			retval = -EINVAL;
			goto exit;
		}

/* standard code that should be always used when a feature is enabled! */
/* first step : check if the wanted feature can be enabled */
/* second step: call fts_mode_handler to actually enable it */
/* NOTE: Disabling a feature is always allowed by default */
		res = check_feature_feasibility(info, FEAT_SEL_GLOVE);
		if (res >= OK || temp == FEAT_DISABLE) {
			info->glove_enabled = temp;
			res = fts_mode_handler(info, 1);
			if (res < OK)
				pr_err("%s: Error during fts_mode_handler! ERROR %08X\n",
					__func__, res);
		}
	}

exit:
	fts_set_bus_ref(info, FTS_BUS_REF_SYSFS, false);
	return retval;
}
#endif


#ifdef COVER_MODE
/* echo 01/00 > cover_mode     to enable/disable cover mode */
/* cat cover_mode	to show the status of the cover_enabled switch
 * (example output in the terminal = "AA00000001BB" if the switch is enabled) */
/* echo 01/00 > cover_mode; cat cover_mode	to enable/disable cover mode and
  * see the switch status in just one call */
/* NOTE: the cover can be handled also using a notifier, in this case the body
  * of these functions should be copied in the notifier callback */
/**
  * File node to set the cover mode
  * echo 01/00 > cover_mode	to enable/disable cover mode \n
  * cat cover_mode	to show the status of the cover_enabled switch \n
  * echo 01/00 > cover_mode; cat cover_mode	to enable/disable cover mode
  * and see the switch status in just one call \n
  * the string returned in the shell is made up as follow: \n
  * { = start byte \n
  * X1X2X3X4 = 4 bytes in HEX format which is the value of info->cover_enabled
  * (1 = enabled; 0= disabled)\n
  * } = end byte \n
  * NOTE: \n
  * the cover can be handled also using a notifier, in this case the body of
  * these functions should be copied in the notifier callback
  */
static ssize_t fts_cover_mode_show(struct device *dev,
				struct device_attribute *attr, char *buf)
{
	int count = 0;
	struct fts_ts_info *info = dev_get_drvdata(dev);

	pr_info("%s: cover_enabled = %d\n", __func__, info->cover_enabled);

	count += scnprintf(buf + count,
			   PAGE_SIZE - count, "{ %08X }\n",
			   info->cover_enabled);

	return count;
}


static ssize_t fts_cover_mode_store(struct device *dev,
				struct device_attribute *attr, const char *buf,
				size_t count)
{
	char *p = (char *)buf;
	unsigned int temp = FEAT_DISABLE;
	int res;
	struct fts_ts_info *info = dev_get_drvdata(dev);
	ssize_t retval = count;

	if (fts_set_bus_ref(info, FTS_BUS_REF_SYSFS, true) < 0) {
		pr_err("%s: bus is not accessible.\n", __func__);
		goto exit;
	}

/* in case of a different elaboration of the input, just modify this
  * initial part of the code according to customer needs */
	if ((count + 1) / 3 != 1)
		pr_err("%s: Number of bytes of parameter wrong! %zu != 1 byte\n",
			__func__, (count + 1) / 3);
	else {
		res = sscanf(p, "%02X ", &temp);
		if ((res != 1) || (temp > FEAT_ENABLE)) {
			pr_err("%s: Missing or invalid cover mode(%u)\n",
				__func__, temp);
			retval = -EINVAL;
			goto exit;
		}

		p += 3;

/* standard code that should be always used when a feature is enabled! */
/* first step : check if the wanted feature can be enabled */
/* second step: call fts_mode_handler to actually enable it */
/* NOTE: Disabling a feature is always allowed by default */
		res = check_feature_feasibility(info, FEAT_SEL_COVER);
		if (res >= OK || temp == FEAT_DISABLE) {
			info->cover_enabled = temp;
			res = fts_mode_handler(info, 1);
			if (res < OK)
				pr_err("%s: Error during fts_mode_handler! ERROR %08X\n",
					__func__, res);
		}
	}

exit:
	fts_set_bus_ref(info, FTS_BUS_REF_SYSFS, false);
	return retval;
}
#endif

#ifdef STYLUS_MODE
/**
  * File node to enable the stylus report
  * echo 01/00 > stylus_mode		to enable/disable stylus mode \n
  * cat stylus_mode	to show the status of the stylus_enabled switch \n
  * echo 01/00 > stylus_mode; cat stylus_mode	to enable/disable stylus mode
  * and see the switch status in just one call \n
  * the string returned in the shell is made up as follow: \n
  * { = start byte \n
  * X1X2X3X4 = 4 bytes in HEX format which is the value of info->stylus_enabled
  * (1 = enabled; 0= disabled)\n
  * } = end byte
  */
static ssize_t fts_stylus_mode_show(struct device *dev,
				struct device_attribute *attr, char *buf)
{
	int count = 0;
	struct fts_ts_info *info = dev_get_drvdata(dev);

	pr_info("%s: stylus_enabled = %d\n", __func__, info->stylus_enabled);

	count += scnprintf(buf + count,
			   PAGE_SIZE - count, "{ %08X }\n",
			   info->stylus_enabled);

	return count;
}


static ssize_t fts_stylus_mode_store(struct device *dev,
				struct device_attribute *attr, const char *buf,
				size_t count)
{
	char *p = (char *)buf;
	unsigned int temp = FEAT_DISABLE;
	int res;
	struct fts_ts_info *info = dev_get_drvdata(dev);
	ssize_t retval = count;


/* in case of a different elaboration of the input, just modify this
  * initial part of the code according to customer needs */
	if ((count + 1) / 3 != 1)
		pr_err("%s: Number of bytes of parameter wrong! %zu != 1 byte\n",
			__func__, (count + 1) / 3);
	else {
		res = sscanf(p, "%02X ", &temp);
		if ((res != 1) || (temp > FEAT_ENABLE)) {
			pr_err("%s: Missing or invalid stylus mode(%u)\n",
				__func__, temp);
			retval = -EINVAL;
			goto exit;
		}

		info->stylus_enabled = temp;
	}

exit:
	return retval;
}
#endif

#endif

/***************************************** GESTURES
  ***************************************************/
#ifdef GESTURE_MODE
#ifdef USE_GESTURE_MASK	/* if this define is used, a gesture bit mask
			  * is used as method to select the gestures to
			  * enable/disable */

/**
  * File node used by the host to set the gesture mask to enable or disable
  * echo EE X1 X2 ~~ > gesture_mask  set the gesture to disable/enable;
  * EE = 00(disable) or 01(enable) \n
  * X1 ~~  = gesture mask (example 06 00 ~~ 00 this gesture mask represents
  * the gestures with ID = 1 and 2) can be specified
  * from 1 to GESTURE_MASK_SIZE bytes, \n
  * if less than GESTURE_MASK_SIZE bytes are passed as arguments,
  * the omit bytes of the mask maintain the previous settings  \n
  * if one or more gestures is enabled the driver will automatically
  * enable the gesture mode, If all the gestures are disabled the driver
  * automatically will disable the gesture mode \n
  * cat gesture_mask   set inside the specified mask and return an error code
  * for the operation \n
  * the string returned in the shell is made up as follow: \n
  * { = start byte \n
  * X1X2X3X4 = 4 bytes in HEX format which represent an error code for enabling
  * the mask (00000000 = no error)\n
  * } = end byte \n\n
  * if USE_GESTURE_MASK is not define the usage of the function become: \n\n
  * echo EE X1 X2 ~~ > gesture_mask   set the gesture to disable/enable;
  * EE = 00(disable) or 01(enable) \n
  * X1 ~~ = gesture IDs (example 01 02 05 represent the gestures with ID = 1, 2
  * and 5)
  * there is no limit of the IDs passed as arguments, (@link gesture_opt Gesture
  * IDs @endlink) \n
  * if one or more gestures is enabled the driver will automatically enable
  * the gesture mode. If all the gestures are disabled the driver automatically
  * will disable the gesture mode. \n
  * cat gesture_mask     to show the status of the gesture enabled switch \n
  * the string returned in the shell is made up as follow: \n
  * { = start byte \n
  * X1X2X3X4 = 4 bytes in HEX format which is the value of info->gesture_enabled
  * (1 = enabled; 0= disabled)\n
  * } = end byte
  */
static ssize_t fts_gesture_mask_show(struct device *dev,
				struct device_attribute *attr, char *buf)
{
	int count = 0, res, temp;
	struct fts_ts_info *info = dev_get_drvdata(dev);

	if (fts_set_bus_ref(info, FTS_BUS_REF_SYSFS, true) < 0) {
		res = ERROR_BUS_WR;
		pr_err("%s: bus is not accessible.\n", __func__);
		scnprintf(buf, PAGE_SIZE, "{ %08X }\n", res);
		goto exit;
	}

	if (mask[0] == 0) {
		res = ERROR_OP_NOT_ALLOW;
		pr_err("%s: Call before echo enable/disable xx xx .... > gesture_mask with a correct number of parameters! ERROR %08X\n",
			__func__, res);
	} else {
		if (mask[1] == FEAT_ENABLE || mask[1] == FEAT_DISABLE)
			res = updateGestureMask(&mask[2], mask[0], mask[1]);
		else
			res = ERROR_OP_NOT_ALLOW;

		if (res < OK)
			pr_err("fts_gesture_mask_store: ERROR %08X\n", res);
	}
	res |= check_feature_feasibility(info, FEAT_SEL_GESTURE);
	temp = isAnyGestureActive();
	if (res >= OK || temp == FEAT_DISABLE)
		info->gesture_enabled = temp;

	pr_info("fts_gesture_mask_store: Gesture Enabled = %d\n",
		 info->gesture_enabled);

	count += scnprintf(buf + count,
			   PAGE_SIZE - count, "{ %08X }\n", res);
	mask[0] = 0;

exit:
	fts_set_bus_ref(info, FTS_BUS_REF_SYSFS, false);
	return count;
}


static ssize_t fts_gesture_mask_store(struct device *dev,
				struct device_attribute *attr, const char *buf,
				size_t count)
{
	char *p = (char *)buf;
	int n, res;
	unsigned int temp = 0;
	ssize_t retval = count;

	if ((count + 1) / 3 > GESTURE_MASK_SIZE + 1) {
		pr_err("fts_gesture_mask_store: Number of bytes of parameter wrong! %zu > (enable/disable + %d )\n",
			(count + 1) / 3, GESTURE_MASK_SIZE);
		mask[0] = 0;
	} else {
		mask[0] = ((count + 1) / 3) - 1;
		for (n = 1; n <= (count + 1) / 3; n++) {
			res = sscanf(p, "%02X ", &temp);
			if (res != 1) {
				pr_err("%s: Invalid input\n", __func__);
				retval = -EINVAL;
				goto exit;
			}

			p += 3;
			mask[n] = (u8)temp;
			pr_info("mask[%d] = %02X\n", n, mask[n]);
		}
	}
exit:
	return retval;
}

#else	/* if this define is not used, to select the gestures to enable/disable
	  * are used the IDs of the gestures */
/* echo EE X1 X2 ... > gesture_mask     set the gesture to disable/enable;
  * EE = 00(disable) or 01(enable); X1 ... = gesture IDs
  * (example 01 02 05... represent the gestures with ID = 1, 2 and 5)
  * there is no limit of the parameters that can be passed,
  * of course the gesture IDs should be valid (all the valid IDs are listed in
  * ftsGesture.h) */
/* cat gesture_mask	enable/disable the given gestures, if one or more
  * gestures is enabled the driver will automatically enable the gesture mode.
  * If all the gestures are disabled the driver automatically will disable the
  * gesture mode.
  * At the end an error code will be printed
  *  (example output in the terminal = "AA00000000BB" if there are no errors) */
/* echo EE X1 X2 ... > gesture_mask; cat gesture_mask	perform in one command
  * both actions stated before */
/**
  * File node used by the host to set the gesture mask to enable or disable
  * echo EE X1 X2 ~~ > gesture_mask	set the gesture to disable/enable;
  * EE = 00(disable) or 01(enable) \n
  * X1 ~ = gesture IDs (example 01 02 05 represent the gestures with ID = 1, 2
  * and 5)
  * there is no limit of the IDs passed as arguments, (@link gesture_opt Gesture
  * IDs @endlink) \n
  * if one or more gestures is enabled the driver will automatically enable
  * the gesture mode, If all the gestures are disabled the driver automatically
  * will disable the gesture mode \n
  * cat gesture_mask	 to show the status of the gesture enabled switch \n
  * the string returned in the shell is made up as follow: \n
  * { = start byte \n
  * X1X2X3X4 = 4 bytes in HEX format which is the value of info->gesture_enabled
  * (1 = enabled; 0= disabled)\n
  * } = end byte
  */
static ssize_t fts_gesture_mask_show(struct device *dev,
				struct device_attribute *attr, char *buf)
{
	int count = 0;
	struct fts_ts_info *info = dev_get_drvdata(dev);

	pr_info("fts_gesture_mask_show: gesture_enabled = %d\n",
		info->gesture_enabled);

	count += scnprintf(buf + count,
			   PAGE_SIZE - count, "{ %08X }\n",
			   info->gesture_enabled);


	return count;
}


static ssize_t fts_gesture_mask_store(struct device *dev,
				struct device_attribute *attr, const char *buf,
				size_t count)
{
	char *p = (char *)buf;
	int n;
	unsigned int temp = 0;
	int res;
	struct fts_ts_info *info = dev_get_drvdata(dev);
	ssize_t retval = count;

	if (fts_set_bus_ref(info, FTS_BUS_REF_SYSFS, true) < 0) {
		pr_err("%s: bus is not accessible.\n", __func__);
		goto exit;
	}

	if ((count + 1) / 3 < 2 || (count + 1) / 3 > GESTURE_MASK_SIZE + 1) {
		pr_err("fts_gesture_mask_store: Number of bytes of parameter wrong! %d < or > (enable/disable + at least one gestureID or max %d bytes)\n",
			(count + 1) / 3, GESTURE_MASK_SIZE);
		mask[0] = 0;
		retval = -EINVAL;
	} else {
		memset(mask, 0, GESTURE_MASK_SIZE + 2);
		mask[0] = ((count + 1) / 3) - 1;
		res = sscanf(p, "%02X ", &temp);
		if (res != 1) {
			pr_err("%s: Invalid input(%u)\n",__func__, temp);
			mask[0] = 0;
			retval = -EINVAL;
			goto bad_param;
		}

		p += 3;
		mask[1] = (u8)temp;
		for (n = 1; n < (count + 1) / 3; n++) {
			res = sscanf(p, "%02X ", &temp);
			if (res != 1) {
				pr_err("%s: Invalid input\n", __func__);
				mask[0] = 0;
				retval = -EINVAL;
				goto bad_param;
			}

			p += 3;
			fromIDtoMask((u8)temp, &mask[2], GESTURE_MASK_SIZE);
		}

		for (n = 0; n < GESTURE_MASK_SIZE + 2; n++)
			pr_info("mask[%d] = %02X\n", n, mask[n]);
	}

bad_param;
	if (mask[0] == 0) {
		res = ERROR_OP_NOT_ALLOW;
		pr_err("%s: Call before echo enable/disable xx xx .... > gesture_mask with a correct number of parameters! ERROR %08X\n",
			__func__, res);

		goto exit;
	}

	if (mask[1] == FEAT_ENABLE || mask[1] == FEAT_DISABLE)
		res = updateGestureMask(&mask[2], mask[0], mask[1]);
	else
		res = ERROR_OP_NOT_ALLOW;

	if (res < OK)
		pr_err("fts_gesture_mask_store: ERROR %08X\n", res);

	res = check_feature_feasibility(info, FEAT_SEL_GESTURE);
	temp = isAnyGestureActive();
	if (res >= OK || temp == FEAT_DISABLE)
		info->gesture_enabled = temp;
	res = fts_mode_handler(info, 0);

exit:
	fts_set_bus_ref(info, FTS_BUS_REF_SYSFS, false);
	return retval;
}


#endif


/**
  * File node to read the coordinates of the last gesture drawn by the user \n
  * cat gesture_coordinates	to obtain the gesture coordinates \n
  * the string returned in the shell follow this up as follow: \n
  * { = start byte \n
  * X1X2X3X4 = 4 bytes in HEX format which represent an error code (00000000 =
  *OK) \n
  * \n if error code = 00000000 \n
  * CC = 1 byte in HEX format number of coords (pair of x,y) returned \n
  * XXiYYi ... = XXi 2 bytes in HEX format for x[i] and
  * YYi 2 bytes in HEX format for y[i] (big endian) \n
  * \n
  * } = end byte
  */
static ssize_t fts_gesture_coordinates_show(struct device *dev,
					struct device_attribute *attr,
					char *buf)
{
	int size = PAGE_SIZE;
	int count = 0, res, i = 0;

	pr_info("%s: Getting gestures coordinates...\n", __func__);

	if (gesture_coords_reported < OK) {
		pr_err("%s: invalid coordinates! ERROR %08X\n",
			 __func__, gesture_coords_reported);
		res = gesture_coords_reported;
	} else {
		size += gesture_coords_reported * 2 * 4 + 2;
		/* coords are pairs of x,y (*2) where each coord is
		  * short(2bytes=4char)(*4) + 1 byte(2char) num of coords (+2)
		  **/
		res = OK;	/* set error code to OK */
	}


	count += scnprintf(buf + count,
			   size - count, "{ %08X", res);

	if (res >= OK) {
		count += scnprintf(buf + count,
				   size - count, "%02X",
				   gesture_coords_reported);

		for (i = 0; i < gesture_coords_reported; i++) {
			count += scnprintf(buf + count,
					   size - count,
					   "%04X",
					   gesture_coordinates_x[i]);
			count += scnprintf(buf + count,
					   size - count,
					   "%04X",
					   gesture_coordinates_y[i]);
		}
	}

	count += scnprintf(buf + count, size - count, " }\n");
	pr_info("%s: Getting gestures coordinates FINISHED!\n", __func__);

	return count;
}
#endif

/* Touch simulation hr timer expiry callback */
static enum hrtimer_restart touchsim_timer_cb(struct hrtimer *timer)
{
	struct fts_touchsim *touchsim = container_of(timer,
						struct fts_touchsim,
						hr_timer);
	enum hrtimer_restart retval = HRTIMER_NORESTART;

	if (touchsim->is_running) {
		hrtimer_forward_now(timer,
				ns_to_ktime(TOUCHSIM_TIMER_INTERVAL_NS));
		retval = HRTIMER_RESTART;
	}

	/* schedule the task to report touch coordinates to kernel
	 *  input subsystem
	 */
	queue_work(touchsim->wq, &touchsim->work);

	return retval;
}

/* Compute the next touch coordinate(x,y) */
static void touchsim_refresh_coordinates(struct fts_touchsim *touchsim)
{
	struct fts_ts_info *info  = container_of(touchsim,
						struct fts_ts_info,
						touchsim);

	const int x_start = info->board->x_axis_max / 10;
	const int x_max   = (info->board->x_axis_max * 9) / 10;
	const int y_start = info->board->y_axis_max / 4;
	const int y_max   = info->board->y_axis_max / 2;

	touchsim->x += touchsim->x_step;
	touchsim->y += touchsim->y_step;

	if (touchsim->x < x_start || touchsim->x > x_max)
		touchsim->x_step *= -1;

	if (touchsim->y < y_start || touchsim->y > y_max)
		touchsim->y_step *= -1;
}

/* Report touch contact */
static void touchsim_report_contact_event(struct input_dev *dev, int slot_id,
						int x, int y, int z)
{
	/* report the cordinates to the input subsystem */
	input_mt_slot(dev, slot_id);
	input_report_key(dev, BTN_TOUCH, true);
	input_mt_report_slot_state(dev, MT_TOOL_FINGER, true);
	input_report_abs(dev, ABS_MT_POSITION_X, x);
	input_report_abs(dev, ABS_MT_POSITION_Y, y);
	input_report_abs(dev, ABS_MT_PRESSURE, z);
}

/* Work callback to report the touch co-ordinates to input subsystem */
static void touchsim_work(struct work_struct *work)
{
	struct fts_touchsim *touchsim =	container_of(work,
						struct fts_touchsim,
						work);
	struct fts_ts_info *info  = container_of(touchsim,
						struct fts_ts_info,
						touchsim);
	u64 timestamp_ns = ktime_get_ns();

	/* prevent CPU from entering deep sleep */
	pm_qos_update_request(&info->pm_qos_req, 100);

	/* Notify the PM core that the wakeup event will take 1 sec */
	__pm_wakeup_event(&info->wakesrc, jiffies_to_msecs(HZ));

	/* get the next touch coordinates */
	touchsim_refresh_coordinates(touchsim);

	/* send the touch co-ordinates */
	touchsim_report_contact_event(info->input_dev, TOUCHSIM_SLOT_ID,
					touchsim->x, touchsim->y, 1);

	input_sync(info->input_dev);

	heatmap_read(&info->v4l2, timestamp_ns);

	pm_qos_update_request(&info->pm_qos_req, PM_QOS_DEFAULT_VALUE);
}

/* Start the touch simulation */
static int touchsim_start(struct fts_touchsim *touchsim)
{
	struct fts_ts_info *info  = container_of(touchsim,
						struct fts_ts_info,
						touchsim);
	if (!touchsim->wq) {
		pr_err("%s: touch simulation test wq is not available!\n",
			__func__);
		return -EFAULT;
	}

	if (touchsim->is_running) {
		pr_err("%s: test in progress!\n", __func__);
		return -EBUSY;
	}

	/* setup the initial touch coordinates*/
	touchsim->x = info->board->x_axis_max / 10;
	touchsim->y = info->board->y_axis_max / 4;

	touchsim->is_running = true;

	touchsim->x_step = 2;
	touchsim->y_step = 2;

	/* Disable touch interrupts from hw */
	fts_disableInterrupt();

	/* Release all touches in the linux input subsystem */
	release_all_touches(info);

	/* setup and start a hr timer to be fired every 120Hz(~8.333333ms) */
	hrtimer_init(&touchsim->hr_timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
	touchsim->hr_timer.function = touchsim_timer_cb;
	hrtimer_start(&touchsim->hr_timer,
			ns_to_ktime(TOUCHSIM_TIMER_INTERVAL_NS),
			HRTIMER_MODE_ABS);

	return OK;
}

/* Stop the touch simulation test */
static int touchsim_stop(struct fts_touchsim *touchsim)
{
	struct fts_ts_info *info  = container_of(touchsim,
						struct fts_ts_info,
						touchsim);
	if (!touchsim->is_running) {
		pr_err("%s: test is not in progress!\n", __func__);
		return -EINVAL;
	}

	/* Set the flag here to make sure flushed work doesn't
	 * re-start the timer
	 */
	touchsim->is_running = false;

	hrtimer_cancel(&touchsim->hr_timer);

	/* flush any pending work */
	flush_workqueue(touchsim->wq);

	/* Release all touches in the linux input subsystem */
	release_all_touches(info);

	/* re enable the hw touch interrupt */
	fts_enableInterrupt();

	return OK;
}

/** sysfs file node to handle the touch simulation test request.
  *  "cat touchsim" shows if the test is running
  *  Possible outputs:
  *  1 = test running.
  *  0 = test not running.
  */
static ssize_t fts_touch_simulation_show(struct device *dev,
					struct device_attribute *attr,
					char *buf)
{
	struct fts_ts_info *info = dev_get_drvdata(dev);

	return scnprintf(buf, PAGE_SIZE, "%u\n",
			info->touchsim.is_running ? 1 : 0);
}

/** sysfs file node to handle the touch simulation test request.
  * "echo <cmd> > touchsim"  to execute a command
  *  Possible commands (cmd):
  *  1 = start the test if not already running.
  *  0 = stop the test if its running.
  */
static ssize_t fts_touch_simulation_store(struct device *dev,
					  struct device_attribute *attr,
					  const char *buf,
					  size_t count)
{
	struct fts_ts_info *info = dev_get_drvdata(dev);
	ssize_t retval = count;
	u8 result;

	if (!mutex_trylock(&info->diag_cmd_lock)) {
		pr_err("%s: Blocking concurrent access\n", __func__);
		retval = -EBUSY;
		goto out;
	}

	if (kstrtou8(buf, 16, &result)) {
		pr_err("%s:bad input. valid inputs are either 0 or 1!\n",
			 __func__);
		retval = -EINVAL;
		goto unlock;
	}

	if (result == 1)
		touchsim_start(&info->touchsim);
	else if (result == 0)
		touchsim_stop(&info->touchsim);
	else
		pr_err("%s:Invalid cmd(%u). valid cmds are either 0 or 1!\n",
			__func__, result);
unlock:
	mutex_unlock(&info->diag_cmd_lock);
out:
	return retval;
}

/***************************************** PRODUCTION TEST
  ***************************************************/

/**
  * File node to execute the Mass Production Test or to get data from the IC
  * (raw or ms/ss init data)
  * echo cmd > stm_fts_cmd	to execute a command \n
  * cat stm_fts_cmd	to show the result of the command \n
  * echo cmd > stm_fts_cmd; cat stm_fts_cmd	to execute and show the result
  * in just one call \n
  * the string returned in the shell is made up as follow: \n
  * { = start byte \n
  * X1X2X3X4 = 4 bytes in HEX format which represent an error_code (00000000 =
  * OK)\n
  * (optional) data = data coming from the command executed represented as HEX
  * string \n
  *                   Not all the command return additional data \n
  * } = end byte \n
  * \n
  * Possible commands (cmd): \n
  * - 00 = MP Test -> return error_code \n
  * - 01 = ITO Test -> return error_code \n
  * - 03 = MS Raw Test -> return error_code \n
  * - 04 = MS Init Data Test -> return error_code \n
  * - 05 = SS Raw Test -> return error_code \n
  * - 06 = SS Init Data Test -> return error_code \n
  * - 13 = Read 1 MS Raw Frame -> return additional data: MS frame row after row
  * \n
  * - 14 = Read MS Init Data -> return additional data: MS init data row after
  * row \n
  * - 15 = Read 1 SS Raw Frame -> return additional data: SS frame,
  * force channels followed by sense channels \n
  * - 16 = Read SS Init Data -> return additional data: SS Init data,
  * first IX for force and sense channels and then CX for force and sense
  * channels \n
  * - F0 = Perform a system reset -> return error_code \n
  * - F1 = Perform a system reset and reenable the sensing and the interrupt
  */
static ssize_t stm_fts_cmd_store(struct device *dev,
				struct device_attribute *attr, const char *buf,
				size_t count)
{
	u8 result, n = 0;
	struct fts_ts_info *info = dev_get_drvdata(dev);
	char *p, *temp_buf, *token;
	ssize_t buf_len;
	ssize_t retval = count;

	if (!count) {
		pr_err("%s: Invalid input buffer length!\n", __func__);
		retval = -EINVAL;
		goto out;
	}

	if (!info) {
		pr_err("%s: Unable to access driver data\n", __func__);
		retval = -EINVAL;
		goto out;
	}

	if (!mutex_trylock(&info->diag_cmd_lock)) {
		pr_err("%s: Blocking concurrent access\n", __func__);
		retval = -EBUSY;
		goto out;
	}

	memset(typeOfCommand, 0, sizeof(typeOfCommand));

	buf_len = strlen(buf) + 1;
	temp_buf = kmalloc(buf_len, GFP_KERNEL);
	if (!temp_buf) {
		pr_err("%s: memory allocation failed for length(%zu)!",
			__func__, buf_len);
		retval = -ENOMEM;
		goto unlock;
	}

	strlcpy(temp_buf, buf, buf_len);
	p = temp_buf;

	/* Parse the input string to retrieve 2 hex-digit width cmds/args
	 * separated by one or more spaces.
	 * Any input not equal to 2 hex-digit width are ignored.
	 * A single 2 hex-digit width  command w/ or w/o space is allowed.
	 * Inputs not in the valid hex range are also ignored.
	 * In case of encountering any of the above failure, the entire input
	 * buffer is discarded.
	 */
	while (p && (n < CMD_STR_LEN)) {

		while (isspace(*p)) {
			p++;
		}

		token = strsep(&p, " ");

		if (!token || *token == '\0') {
			break;
		}

		if (strlen(token) != 2 ) {
			pr_debug("%s: bad len. len=%zu\n",
				 __func__, strlen(token));
			n = 0;
			break;
		}

		if (kstrtou8(token, 16, &result)) {
			/* Conversion failed due to bad input.
			* Discard the entire buffer.
			*/
			pr_debug("%s: bad input\n", __func__);
			n = 0;
			break;
		}

		/* found a valid cmd/args */
		typeOfCommand[n] = result;
		pr_debug("%s: typeOfCommand[%d]=%02X\n",
			__func__, n, typeOfCommand[n]);

		n++;
	}

	if (n == 0) {
		pr_err("%s: Found invalid cmd/arg\n", __func__);
		retval = -EINVAL;
	}

	numberParameters = n;
	pr_info("%s: Number of Parameters = %d\n", __func__, numberParameters);

	kfree(temp_buf);

unlock:
	mutex_unlock(&info->diag_cmd_lock);
out:
	return retval;
}

static ssize_t stm_fts_cmd_show(struct device *dev,
				struct device_attribute *attr, char *buf)
{
	int res, j, doClean = 0, index = 0;
	int size = (6 * 2) + 1;
	int nodes = 0;
	int init_type = SPECIAL_PANEL_INIT;
	u8 *all_strbuff = buf;
	struct fts_ts_info *info = dev_get_drvdata(dev);

	MutualSenseData compData;
	SelfSenseData comData;
	MutualSenseFrame frameMS;
	SelfSenseFrame frameSS;

	if (!info) {
		pr_err("%s: Unable to access driver data\n", __func__);
		return  -EINVAL;
	}

	if (!mutex_trylock(&info->diag_cmd_lock)) {
		pr_err("%s: Blocking concurrent access\n", __func__);
		return -EBUSY;
	}

	if (fts_set_bus_ref(info, FTS_BUS_REF_SYSFS, true) < 0) {
		res = ERROR_BUS_WR;
		pr_err("%s: bus is not accessible.\n", __func__);
		scnprintf(buf, PAGE_SIZE, "{ %08X }\n", res);
		fts_set_bus_ref(info, FTS_BUS_REF_SYSFS, false);
		mutex_unlock(&info->diag_cmd_lock);
		return 0;
	}

	if (numberParameters >= 1) {
		res = fts_disableInterrupt();
		if (res < 0) {
			pr_err("fts_disableInterrupt: ERROR %08X\n", res);
			res = (res | ERROR_DISABLE_INTER);
			goto END;
		}

		switch (typeOfCommand[0]) {
		/*ITO TEST*/
		case 0x01:
			res = production_test_ito(LIMITS_FILE, &tests);
			break;

		/*PRODUCTION TEST*/
		case 0x02:
			if (systemInfo.u8_cfgAfeVer != systemInfo.u8_cxAfeVer) {
				res = ERROR_OP_NOT_ALLOW;
				pr_err("Miss match in CX version! MP test not allowed with wrong CX memory! ERROR %08X\n",
					res);
				break;
			}
			res = production_test_initialization(init_type);
			break;

		case 0x00:
			if (systemInfo.u8_cfgAfeVer != systemInfo.u8_cxAfeVer) {
				res = ERROR_OP_NOT_ALLOW;
				pr_err("Miss match in CX version! MP test not allowed with wrong CX memory! ERROR %08X\n",
					res);
				break;
			}

			res = production_test_main(LIMITS_FILE, 1, init_type,
						   &tests);
			break;

		/*read mutual raw*/
		case 0x13:
			if (numberParameters > 1) {
				pr_info("Get 1 MS Frame\n");
				setScanMode(SCAN_MODE_LOCKED, typeOfCommand[1]);
				mdelay(WAIT_FOR_FRESH_FRAMES);
				setScanMode(SCAN_MODE_ACTIVE, 0x00);
				mdelay(WAIT_AFTER_SENSEOFF);
				/* Delete the events related to some touch
				  * (allow to call this function while touching
				  * the screen without having a flooding of the
				  * FIFO)
				  */
				flushFIFO();
				res = getMSFrame3(MS_RAW, &frameMS);
				if (res < 0) {
					pr_err("Error while taking the MS frame... ERROR %08X\n",
						res);
				} else {
					pr_info("The frame size is %d words\n",
						res);
#ifdef RAW_DATA_FORMAT_DEC
					size += 3 * 2 +
					    (7 * frameMS.header.sense_node + 1)
					    * frameMS.header.force_node;
#else
					size += (res * sizeof(short) + 2) * 2;
#endif
					/* set res to OK because if getMSFrame
					  * is successful res = number of words
					  * read
					  */
					res = OK;
					print_frame_short(
						"MS frame =",
						array1dTo2d_short(
							frameMS.node_data,
							frameMS.node_data_size,
							frameMS.header.
							sense_node),
						frameMS.header.force_node,
						frameMS.header.sense_node);
				}
			} else {
				pr_err("Wrong number of parameters!\n");
				res = ERROR_OP_NOT_ALLOW;
			}
			break;
		/*read self raw*/
		case 0x15:
			if (numberParameters > 1) {
				pr_info("Get 1 SS Frame\n");
				setScanMode(SCAN_MODE_LOCKED, typeOfCommand[1]);
				mdelay(WAIT_FOR_FRESH_FRAMES);
				setScanMode(SCAN_MODE_ACTIVE, 0x00);
				mdelay(WAIT_AFTER_SENSEOFF);
				flushFIFO();
				/* delete the events related to some touch
				  * (allow to call this function while touching
				  * the screen without having a flooding of the
				  * FIFO) */
				res = getSSFrame3(SS_RAW, &frameSS);

				if (res < OK) {
					pr_err("Error while taking the SS frame... ERROR %08X\n",
						res);
				} else {
					pr_info("The frame size is %d words\n",
						res);
#ifdef RAW_DATA_FORMAT_DEC
					size += 3 * 2 + 5 +
						(frameSS.header.sense_node +
						 frameSS.header.force_node) * 7;
#else
					size += (res * sizeof(short) + 2) * 2;
#endif
					/* set res to OK because if getMSFrame
					  * is successful res = number of words
					  * read
					  */
					res = OK;
					print_frame_short(
						"SS force frame =",
						array1dTo2d_short(
							frameSS.force_data,
							frameSS.header.
							force_node, 1),
						frameSS.header.force_node, 1);
					print_frame_short(
						"SS sense frame =",
						array1dTo2d_short(
							frameSS.sense_data,
							frameSS.header.
							sense_node,
							frameSS.header.
							sense_node),
						1, frameSS.header.sense_node);
				}
			} else {
				pr_err("Wrong number of parameters!\n");
				res = ERROR_OP_NOT_ALLOW;
			}

			break;

		case 0x14:	/* read mutual comp data */
			pr_info("Get MS Compensation Data\n");
			res = readMutualSenseCompensationData(LOAD_CX_MS_TOUCH,
							      &compData);

			if (res < 0)
				pr_err("Error reading MS compensation data ERROR %08X\n",
					res);
			else {
				pr_info("MS Compensation Data Reading Finished!\n");
				size += ((compData.node_data_size + 3) *
					 sizeof(u8)) * 2;
				print_frame_i8("MS Data (Cx2) =",
					       array1dTo2d_i8(
						       compData.node_data,
						       compData.
						       node_data_size,
						       compData.header.
						       sense_node),
					       compData.header.force_node,
					       compData.header.sense_node);
			}
			break;

		case 0x16:	/* read self comp data */
			pr_info("Get SS Compensation Data...\n");
			res = readSelfSenseCompensationData(LOAD_CX_SS_TOUCH,
							    &comData);
			if (res < 0)
				pr_err("Error reading SS compensation data ERROR %08X\n",
					res);
			else {
				pr_info("SS Compensation Data Reading Finished!\n");
				size += ((comData.header.force_node +
					  comData.header.sense_node) * 2 + 6) *
					sizeof(u8) * 2;
				print_frame_u8("SS Data Ix2_fm = ",
					       array1dTo2d_u8(comData.ix2_fm,
							      comData.header.
							      force_node, 1),
					       comData.header.force_node, 1);
				print_frame_i8("SS Data Cx2_fm = ",
					       array1dTo2d_i8(comData.cx2_fm,
							      comData.header.
							      force_node, 1),
					       comData.header.force_node, 1);
				print_frame_u8("SS Data Ix2_sn = ",
					       array1dTo2d_u8(comData.ix2_sn,
							      comData.header.
							      sense_node,
							      comData.header.
							      sense_node), 1,
					       comData.header.sense_node);
				print_frame_i8("SS Data Cx2_sn = ",
					       array1dTo2d_i8(comData.cx2_sn,
							      comData.header.
							      sense_node,
							      comData.header.
							      sense_node), 1,
					       comData.header.sense_node);
			}
			break;
		case 0x17:	/* Read mutual strength */
			pr_info("Get 1 MS Strength\n");
			setScanMode(SCAN_MODE_ACTIVE, 0xFF);
			msleep(WAIT_FOR_FRESH_FRAMES);
			setScanMode(SCAN_MODE_ACTIVE, 0x00);
			msleep(WAIT_AFTER_SENSEOFF);
			/* Flush outstanding touch events */
			flushFIFO();
			nodes = getMSFrame3(MS_STRENGTH, &frameMS);
			if (nodes < 0) {
				res = nodes;
				pr_err("Error while taking the MS strength... ERROR %08X\n",
					res);
			} else {
				pr_info("The frame size is %d words\n", nodes);
#ifdef RAW_DATA_FORMAT_DEC
				size += 3 * 2 +
				    (7 * frameMS.header.sense_node + 1)
				    * frameMS.header.force_node;
#else
				size += (nodes * sizeof(short) + 2) * 2;
#endif
				print_frame_short("MS strength =",
				    array1dTo2d_short(frameMS.node_data,
						frameMS.node_data_size,
						frameMS.header.sense_node),
				    frameMS.header.force_node,
				    frameMS.header.sense_node);
				res = OK;
			}
			break;
		case 0x03:	/* MS Raw DATA TEST */
			res = fts_system_reset();
			if (res >= OK)
				res = production_test_ms_raw(LIMITS_FILE, 1,
							     &tests);
			break;

		case 0x04:	/* MS CX DATA TEST */
			res = fts_system_reset();
			if (res >= OK)
				res = production_test_ms_cx(LIMITS_FILE, 1,
							    &tests);
			break;

		case 0x05:	/* SS RAW DATA TEST */
			res = fts_system_reset();
			if (res >= OK)
				res = production_test_ss_raw(LIMITS_FILE, 1,
							     &tests);
			break;

		case 0x06:	/* SS IX CX DATA TEST */
			res = fts_system_reset();
			if (res >= OK)
				res = production_test_ss_ix_cx(LIMITS_FILE, 1,
							       &tests);
			break;


		case 0xF0:
		case 0xF1:	/* TOUCH ENABLE/DISABLE */
			doClean = (int)(typeOfCommand[0] & 0x01);
			res = cleanUp(doClean);
			break;

		default:
			pr_err("CMD(%02X) NOT VALID!! Insert a proper value\n",
				typeOfCommand[0]);
			res = ERROR_OP_NOT_ALLOW;
			break;
		}

		doClean = fts_mode_handler(info, 1);
		if (typeOfCommand[0] != 0xF0)
			doClean |= fts_enableInterrupt();
		if (doClean < 0)
			pr_err("%s: ERROR %08X\n", __func__,
				 (doClean | ERROR_ENABLE_INTER));
	} else {
		pr_err("NO COMMAND SPECIFIED!!! do: 'echo [cmd_code] [args] > stm_fts_cmd' before looking for result!\n");
		res = ERROR_OP_NOT_ALLOW;
	}

END:
	/* here start the reporting phase, assembling the data
	  * to send in the file node */
	size = PAGE_SIZE;
	index = 0;
	index += scnprintf(all_strbuff + index, size - index, "{ %08X", res);

	if (res >= OK) {
		/*all the other cases are already fine printing only the res.*/
		switch (typeOfCommand[0]) {
		case 0x13:
		case 0x17:
#ifdef RAW_DATA_FORMAT_DEC
			index += scnprintf(all_strbuff + index, size - index,
					   "%3d",
					   (u8)frameMS.header.force_node);
			index += scnprintf(all_strbuff + index, size - index,
					   "%3d",
					   (u8)frameMS.header.sense_node);
#else
			index += scnprintf(all_strbuff + index,
					   size - index, "%02X",
					   (u8)frameMS.header.force_node);

			index += scnprintf(all_strbuff + index,
					   size - index, "%02X",
					   (u8)frameMS.header.sense_node);
#endif

			for (j = 0; j < frameMS.node_data_size; j++) {
#ifdef RAW_DATA_FORMAT_DEC
				if (j % frameMS.header.sense_node == 0)
					index += scnprintf(all_strbuff + index,
							   size - index, "\n");
				index += scnprintf(all_strbuff + index,
						   size - index, "%7d",
						   frameMS.node_data[j]);
#else
				index += scnprintf(all_strbuff + index,
					   size - index,
					   "%02X%02X",
					   (frameMS.node_data[j] & 0xFF00) >> 8,
					   frameMS.node_data[j] & 0xFF);
#endif
			}

			kfree(frameMS.node_data);
			break;

		case 0x15:
#ifdef RAW_DATA_FORMAT_DEC
			index += scnprintf(all_strbuff + index, size - index,
					   "%3d",
					   (u8)frameSS.header.force_node);
			index += scnprintf(all_strbuff + index, size - index,
					   "%3d",
					   (u8)frameSS.header.sense_node);
			index += scnprintf(all_strbuff + index, size - index,
					   "\n");
#else
			index += scnprintf(all_strbuff + index,
					   size - index, "%02X",
					   (u8)frameSS.header.force_node);

			index += scnprintf(all_strbuff + index,
					   size - index, "%02X",
					   (u8)frameSS.header.sense_node);
#endif

			/* Copying self raw data Force */
			for (j = 0; j < frameSS.header.force_node; j++) {
#ifdef RAW_DATA_FORMAT_DEC
				index += scnprintf(all_strbuff + index,
						   size - index,
						   "%7d",
						   frameSS.force_data[j]);
#else
				index += scnprintf(all_strbuff + index,
					  size - index,
					  "%02X%02X",
					  (frameSS.force_data[j] & 0xFF00) >> 8,
					  frameSS.force_data[j] & 0xFF);
#endif
			}


#ifdef RAW_DATA_FORMAT_DEC
			index += scnprintf(all_strbuff + index, size - index,
					   "\n");
#endif

			/* Copying self raw data Sense */
			for (j = 0; j < frameSS.header.sense_node; j++) {
#ifdef RAW_DATA_FORMAT_DEC
				index += scnprintf(all_strbuff + index,
						   size - index, "%7d",
						   frameSS.sense_data[j]);
#else
				index += scnprintf(all_strbuff + index,
					  size - index,
					  "%02X%02X",
					  (frameSS.sense_data[j] & 0xFF00) >> 8,
					  frameSS.sense_data[j] & 0xFF);
#endif
			}

			kfree(frameSS.force_data);
			kfree(frameSS.sense_data);
			break;

		case 0x14:
			index += scnprintf(all_strbuff + index,
					   size - index, "%02X",
					   (u8)compData.header.force_node);

			index += scnprintf(all_strbuff + index,
					   size - index, "%02X",
					   (u8)compData.header.sense_node);

			/* Cpying CX1 value */
			index += scnprintf(all_strbuff + index,
					   size - index, "%02X",
					   (compData.cx1) & 0xFF);

			/* Copying CX2 values */
			for (j = 0; j < compData.node_data_size; j++) {
				index += scnprintf(all_strbuff + index,
						size - index,
						"%02X",
						(compData.node_data[j]) & 0xFF);
			}

			kfree(compData.node_data);
			break;

		case 0x16:
			index += scnprintf(all_strbuff + index,
					   size - index, "%02X",
					   comData.header.force_node);

			index += scnprintf(all_strbuff + index,
					   size - index, "%02X",
					   comData.header.sense_node);

			index += scnprintf(all_strbuff + index,
					   size - index, "%02X",
					   (comData.f_ix1) & 0xFF);

			index += scnprintf(all_strbuff + index,
					   size - index, "%02X",
					   (comData.s_ix1) & 0xFF);

			index += scnprintf(all_strbuff + index,
					   size - index, "%02X",
					   (comData.f_cx1) & 0xFF);

			index += scnprintf(all_strbuff + index,
					   size - index, "%02X",
					   (comData.s_cx1) & 0xFF);

			/* Copying IX2 Force */
			for (j = 0; j < comData.header.force_node; j++) {
				index += scnprintf(all_strbuff + index,
						   size - index,
						   "%02X",
						   comData.ix2_fm[j] & 0xFF);
			}

			/* Copying IX2 Sense */
			for (j = 0; j < comData.header.sense_node; j++) {
				index += scnprintf(all_strbuff + index,
						   size - index,
						   "%02X",
						   comData.ix2_sn[j] & 0xFF);
			}

			/* Copying CX2 Force */
			for (j = 0; j < comData.header.force_node; j++) {
				index += scnprintf(all_strbuff + index,
						   size - index,
						   "%02X",
						   comData.cx2_fm[j] & 0xFF);
			}

			/* Copying CX2 Sense */
			for (j = 0; j < comData.header.sense_node; j++) {
				index += scnprintf(all_strbuff + index,
						   size - index,
						   "%02X",
						   comData.cx2_sn[j] & 0xFF);
			}

			kfree(comData.ix2_fm);
			kfree(comData.ix2_sn);
			kfree(comData.cx2_fm);
			kfree(comData.cx2_sn);
			break;

		default:
			break;
		}
	}

	index += scnprintf(all_strbuff + index, size - index, " }\n");
	numberParameters = 0;
	/* need to reset the number of parameters in order to wait the
	  * next command, comment if you want to repeat the last command sent
	  * just doing a cat */
	/* pr_err("numberParameters = %d\n", numberParameters); */

	fts_set_bus_ref(info, FTS_BUS_REF_SYSFS, false);
	mutex_unlock(&info->diag_cmd_lock);

	return index;
}

static DEVICE_ATTR(fwupdate, 0664, fts_fwupdate_show,
		   fts_fwupdate_store);
static DEVICE_ATTR(appid, 0444, fts_appid_show, NULL);
static DEVICE_ATTR(mode_active, 0444, fts_mode_active_show, NULL);
static DEVICE_ATTR(fw_file_test, 0444, fts_fw_test_show, NULL);
static DEVICE_ATTR(status, 0444, fts_status_show, NULL);
static DEVICE_ATTR(stm_fts_cmd, 0664, stm_fts_cmd_show,
		   stm_fts_cmd_store);
#ifdef USE_ONE_FILE_NODE
static DEVICE_ATTR(feature_enable, 0664,
		   fts_feature_enable_show, fts_feature_enable_store);
#else


#ifdef GRIP_MODE
static DEVICE_ATTR(grip_mode, 0664, fts_grip_mode_show,
		   fts_grip_mode_store);
#endif

#ifdef CHARGER_MODE
static DEVICE_ATTR(charger_mode, 0664,
		   fts_charger_mode_show, fts_charger_mode_store);
#endif

#ifdef GLOVE_MODE
static DEVICE_ATTR(glove_mode, 0664,
		   fts_glove_mode_show, fts_glove_mode_store);
#endif

#ifdef COVER_MODE
static DEVICE_ATTR(cover_mode, 0664,
		   fts_cover_mode_show, fts_cover_mode_store);
#endif

#ifdef STYLUS_MODE
static DEVICE_ATTR(stylus_mode, 0664,
		   fts_stylus_mode_show, fts_stylus_mode_store);
#endif

#endif

#ifdef GESTURE_MODE
static DEVICE_ATTR(gesture_mask, 0664,
		   fts_gesture_mask_show, fts_gesture_mask_store);
static DEVICE_ATTR(gesture_coordinates, 0664,
		   fts_gesture_coordinates_show, NULL);
#endif

static DEVICE_ATTR(touchsim, 0664,
		   fts_touch_simulation_show,
		   fts_touch_simulation_store);

/*  /sys/devices/soc.0/f9928000.i2c/i2c-6/6-0049 */
static struct attribute *fts_attr_group[] = {
	&dev_attr_fwupdate.attr,
	&dev_attr_appid.attr,
	&dev_attr_mode_active.attr,
	&dev_attr_fw_file_test.attr,
	&dev_attr_status.attr,
	&dev_attr_stm_fts_cmd.attr,
#ifdef USE_ONE_FILE_NODE
	&dev_attr_feature_enable.attr,
#else

#ifdef GRIP_MODE
	&dev_attr_grip_mode.attr,
#endif
#ifdef CHARGER_MODE
	&dev_attr_charger_mode.attr,
#endif
#ifdef GLOVE_MODE
	&dev_attr_glove_mode.attr,
#endif
#ifdef COVER_MODE
	&dev_attr_cover_mode.attr,
#endif
#ifdef STYLUS_MODE
	&dev_attr_stylus_mode.attr,
#endif

#endif

#ifdef GESTURE_MODE
	&dev_attr_gesture_mask.attr,
	&dev_attr_gesture_coordinates.attr,
#endif
	&dev_attr_touchsim.attr,
	NULL,
};

/** @}*/
/** @}*/


/**
  * @defgroup isr Interrupt Service Routine (Event Handler)
  * The most important part of the driver is the ISR (Interrupt Service Routine)
  * called also as Event Handler \n
  * As soon as the interrupt pin goes low, fts_interrupt_handler() is called and
  * the chain to read and parse the event read from the FIFO start.\n
  * For any different kind of EVT_ID there is a specific event handler
  * which will take the correct action to report the proper info to the host. \n
  * The most important events are the one related to touch information, status
  * update or user report.
  * @{
  */

/**
  * Report to the linux input system the pressure and release of a button
  * handling concurrency
  * @param info pointer to fts_ts_info which contains info about the device
  * and its hw setup
  * @param key_code	button value
  */
void fts_input_report_key(struct fts_ts_info *info, int key_code)
{
	mutex_lock(&info->input_report_mutex);
	input_report_key(info->input_dev, key_code, 1);
	input_sync(info->input_dev);
	input_report_key(info->input_dev, key_code, 0);
	input_sync(info->input_dev);
	mutex_unlock(&info->input_report_mutex);
}


/**
  * Event Handler for no events (EVT_ID_NOEVENT)
  */
static bool fts_nop_event_handler(struct fts_ts_info *info, unsigned
				  char *event)
{
	pr_info("%s: Doing nothing for event = %02X %02X %02X %02X %02X %02X %02X %02X\n",
		__func__, event[0], event[1], event[2], event[3],
		event[4],
		event[5], event[6], event[7]);
	return false;
}

/**
  * Event handler for enter and motion events (EVT_ID_ENTER_POINT,
  * EVT_ID_MOTION_POINT )
  * report touch coordinates and additional information
  * to the linux input system
  */
static bool fts_enter_pointer_event_handler(struct fts_ts_info *info, unsigned
					    char *event)
{
	unsigned char touchId;
	unsigned int touch_condition = 1, tool = MT_TOOL_FINGER;
	int x, y, z, major, minor, distance;
	u8 touchType;

	if (!info->resume_bit)
		goto no_report;

	touchType = event[1] & 0x0F;
	touchId = (event[1] & 0xF0) >> 4;

	x = (((int)event[3] & 0x0F) << 8) | (event[2]);
	y = ((int)event[4] << 4) | ((event[3] & 0xF0) >> 4);
	z = (int)event[5];
	if (z <= 0) {
		/* Should not happen, because zero pressure implies contact has
		 * left, so this function should not be invoked. For safety, to
		 * prevent this touch from being dropped, set to smallest
		 * pressure value instead
		 */
		pr_err("%s: Pressure is %i, but pointer is not leaving\n",
		       __func__, z);
		z = 1; /* smallest non-zero pressure value */
	}
	major = (int)(((event[0] & 0x0C) << 2) | ((event[6] & 0xF0) >> 4));
	minor = (int)(((event[7] & 0xC0) >> 2) | (event[6] & 0x0F));
	/* TODO: check with fw how they will report distance */
	distance = 0;	/* if the tool is touching the display
			  * the distance should be 0 */

	if (x == info->board->x_axis_max)
		x--;

	if (y == info->board->y_axis_max)
		y--;

	input_mt_slot(info->input_dev, touchId);
	switch (touchType) {
#ifdef STYLUS_MODE
	case TOUCH_TYPE_STYLUS:
		pr_info("%s : It is a stylus!\n", __func__);
		if (info->stylus_enabled == 1) {
			/* if stylus_enabled is not ==1
			  * it will be reported as normal touch */
			tool = MT_TOOL_PEN;
			touch_condition = 1;
			__set_bit(touchId, &info->stylus_id);
			break;
		}
#endif
	/* TODO: customer can implement a different strategy for each kind of
	 * touch */
	case TOUCH_TYPE_FINGER:
	case TOUCH_TYPE_GLOVE:
	case TOUCH_TYPE_PALM:
		pr_debug("%s : It is a touch type %d!\n", __func__, touchType);
		tool = MT_TOOL_FINGER;
		touch_condition = 1;
		__set_bit(touchId, &info->touch_id);
		break;


	case TOUCH_TYPE_HOVER:
		tool = MT_TOOL_FINGER;
		touch_condition = 0;	/* need to hover */
		z = 0;	/* no pressure */
		__set_bit(touchId, &info->touch_id);
		distance = DISTANCE_MAX;/* check with fw report the hovering
					  * distance */
		break;

	case TOUCH_TYPE_INVALID:
	default:
		pr_err("%s : Invalid touch type = %d ! No Report...\n",
			__func__, touchType);
		goto no_report;
	}

	input_report_key(info->input_dev, BTN_TOUCH, touch_condition);
	input_mt_report_slot_state(info->input_dev, tool, 1);

	/* pr_info("%s : TouchID = %d,Touchcount = %d\n", __func__,
	  *	touchId,touchcount); */

	input_report_abs(info->input_dev, ABS_MT_POSITION_X, x);
	input_report_abs(info->input_dev, ABS_MT_POSITION_Y, y);
	input_report_abs(info->input_dev, ABS_MT_TOUCH_MAJOR, major);
	input_report_abs(info->input_dev, ABS_MT_TOUCH_MINOR, minor);
	input_report_abs(info->input_dev, ABS_MT_PRESSURE, z);

#ifndef SKIP_DISTANCE
	input_report_abs(info->input_dev, ABS_MT_DISTANCE, distance);
#endif
	/* pr_info("%s :  Event 0x%02x - ID[%d], (x, y) = (%3d, %3d)
	 * Size = %d\n",
	  *	__func__, *event, touchId, x, y, touchType); */

	return true;
no_report:
	return false;
}

/**
  * Event handler for leave event (EVT_ID_LEAVE_POINT )
  * Report to the linux input system that one touch left the display
  */
static bool fts_leave_pointer_event_handler(struct fts_ts_info *info, unsigned
					    char *event)
{
	unsigned char touchId;
	unsigned int tool = MT_TOOL_FINGER;
	u8 touchType;

	touchType = event[1] & 0x0F;
	touchId = (event[1] & 0xF0) >> 4;

	input_mt_slot(info->input_dev, touchId);

	input_report_abs(info->input_dev, ABS_MT_PRESSURE, 0);
	switch (touchType) {
#ifdef STYLUS_MODE
	case TOUCH_TYPE_STYLUS:
		pr_info("%s : It is a stylus!\n", __func__);
		if (info->stylus_enabled == 1) {
			/* if stylus_enabled is not ==1 it will be reported as
			 * normal touch */
			tool = MT_TOOL_PEN;
			__clear_bit(touchId, &info->stylus_id);
			break;
		}
#endif

	case TOUCH_TYPE_FINGER:
	/* pr_info("%s : It is a finger!\n", __func__); */
	case TOUCH_TYPE_GLOVE:
	/* pr_info("%s : It is a glove!\n", __func__); */
	case TOUCH_TYPE_PALM:
	/* pr_info("%s : It is a palm!\n", __func__); */
	case TOUCH_TYPE_HOVER:
		tool = MT_TOOL_FINGER;
		__clear_bit(touchId, &info->touch_id);
		break;

	case TOUCH_TYPE_INVALID:
	default:
		pr_err("%s : Invalid touch type = %d ! No Report...\n",
			__func__, touchType);
		return false;
	}

	input_mt_report_slot_state(info->input_dev, tool, 0);

	/* pr_info("%s : TouchID = %d, Touchcount = %d\n", __func__,
	 *	touchId,touchcount); */


	input_report_abs(info->input_dev, ABS_MT_TRACKING_ID, -1);
	/* pr_info("%s : Event 0x%02x - release ID[%d]\n", __func__,
	 *	event[0], touchId); */
	return true;
}

/* EventId : EVT_ID_MOTION_POINT */
#define fts_motion_pointer_event_handler fts_enter_pointer_event_handler
/* remap the motion event handler to the same function which handle the enter
 * event */

/**
  * Event handler for error events (EVT_ID_ERROR)
  * Handle unexpected error events implementing recovery strategy and
  * restoring the sensing status that the IC had before the error occurred
  */
static bool fts_error_event_handler(struct fts_ts_info *info, unsigned
				    char *event)
{
	int error = 0;

	pr_info("%s: Received event %02X %02X %02X %02X %02X %02X %02X %02X\n",
		 __func__, event[0], event[1], event[2], event[3], event[4],
		 event[5],
		 event[6], event[7]);

	switch (event[1]) {
	case EVT_TYPE_ERROR_ESD:/* esd */
	{/* before reset clear all slot */
		release_all_touches(info);

		fts_chip_powercycle(info);

		error = fts_system_reset();
		error |= fts_mode_handler(info, 0);
		error |= fts_enableInterrupt();
		if (error < OK)
			pr_err("%s Cannot restore the device ERROR %08X\n",
				__func__, error);
	}
	break;
	case EVT_TYPE_ERROR_WATCHDOG:	/* watch dog timer */
	{
		dumpErrorInfo(NULL, 0);
		/* before reset clear all slots */
		release_all_touches(info);
		error = fts_system_reset();
		error |= fts_mode_handler(info, 0);
		error |= fts_enableInterrupt();
		if (error < OK)
			pr_err("%s Cannot reset the device ERROR %08X\n",
				__func__, error);
	}
	break;
	}
	return false;
}

/**
  * Event handler for controller ready event (EVT_ID_CONTROLLER_READY)
  * Handle controller events received after unexpected reset of the IC updating
  * the resets flag and restoring the proper sensing status
  */
static bool fts_controller_ready_event_handler(struct fts_ts_info *info,
					       unsigned char *event)
{
	int error;

	pr_info("%s: Received event %02X %02X %02X %02X %02X %02X %02X %02X\n",
		__func__, event[0], event[1], event[2], event[3], event[4],
		event[5], event[6], event[7]);
	release_all_touches(info);
	setSystemResetedUp(1);
	setSystemResetedDown(1);
	error = fts_mode_handler(info, 0);
	if (error < OK)
		pr_err("%s Cannot restore the device status ERROR %08X\n",
			__func__, error);
	return false;
}

/**
  * Event handler for status events (EVT_ID_STATUS_UPDATE)
  * Handle status update events
  */
static bool fts_status_event_handler(struct fts_ts_info *info, unsigned
				     char *event)
{
	switch (event[1]) {
	case EVT_TYPE_STATUS_ECHO:
		pr_debug("%s: Echo event of command = %02X %02X %02X %02X %02X %02X\n",
			__func__, event[2], event[3], event[4], event[5],
			event[6], event[7]);
		break;

	case EVT_TYPE_STATUS_FORCE_CAL:
		switch (event[2]) {
		case 0x00:
			pr_info("%s: Continuous frame drop Force cal = %02X %02X %02X %02X %02X %02X\n",
				__func__, event[2], event[3], event[4],
				event[5], event[6], event[7]);
			break;

		case 0x01:
			pr_info("%s: Mutual negative detect Force cal = %02X %02X %02X %02X %02X %02X\n",
				__func__, event[2], event[3], event[4],
				event[5], event[6], event[7]);
			break;

		case 0x02:
			pr_info("%s: Mutual calib deviation Force cal = %02X %02X %02X %02X %02X %02X\n",
				__func__, event[2], event[3], event[4],
				event[5], event[6], event[7]);
			break;

		case 0x11:
			pr_info("%s: SS negative detect Force cal = %02X %02X %02X %02X %02X %02X\n",
				__func__, event[2], event[3], event[4],
				event[5], event[6], event[7]);
			break;

		case 0x12:
			pr_info("%s: SS negative detect Force cal in Low Power mode = %02X %02X %02X %02X %02X %02X\n",
				__func__, event[2], event[3], event[4],
				event[5], event[6], event[7]);
			break;

		case 0x13:
			pr_info("%s: SS negative detect Force cal in Idle mode = %02X %02X %02X %02X %02X %02X\n",
				__func__, event[2], event[3], event[4],
				event[5], event[6], event[7]);
			break;

		case 0x20:
			pr_info("%s: SS invalid Mutual Strength soft Force cal = %02X %02X %02X %02X %02X %02X\n",
				__func__, event[2], event[3], event[4],
				event[5], event[6], event[7]);
			break;

		case 0x21:
			pr_info("%s: SS invalid Self Strength soft Force cal = %02X %02X %02X %02X %02X %02X\n",
				__func__, event[2], event[3], event[4],
				event[5], event[6], event[7]);
			break;

		case 0x22:
			pr_info("%s: SS invalid Self Island soft Force cal = %02X %02X %02X %02X %02X %02X\n",
				__func__, event[2], event[3], event[4],
				event[5], event[6], event[7]);
			break;

		case 0x30:
			pr_info("%s: MS invalid Mutual Strength soft Force cal = %02X %02X %02X %02X %02X %02X\n",
				__func__, event[2], event[3], event[4],
				event[5], event[6], event[7]);
			break;

		case 0x31:
			pr_info("%s: MS invalid Self Strength soft Force cal = %02X %02X %02X %02X %02X %02X\n",
				__func__, event[2], event[3], event[4],
				event[5], event[6], event[7]);
			break;

		default:
			pr_info("%s: Force cal = %02X %02X %02X %02X %02X %02X\n",
				__func__, event[2], event[3], event[4],
				event[5], event[6], event[7]);
		}
		break;

	case EVT_TYPE_STATUS_FRAME_DROP:
		switch (event[2]) {
		case 0x01:
			pr_info("%s: Frame drop noisy frame = %02X %02X %02X %02X %02X %02X\n",
				__func__, event[2], event[3], event[4],
				event[5], event[6], event[7]);
			break;

		case 0x02:
			pr_info("%s: Frame drop bad R = %02X %02X %02X %02X %02X %02X\n",
				__func__, event[2], event[3], event[4],
				event[5], event[6], event[7]);
			break;

		case 0x03:
			pr_info("%s: Frame drop invalid processing state = %02X %02X %02X %02X %02X %02X\n",
				__func__, event[2], event[3], event[4],
				event[5], event[6], event[7]);
			break;

		default:
			pr_info("%s: Frame drop = %02X %02X %02X %02X %02X %02X\n",
				__func__, event[2], event[3], event[4],
				event[5], event[6], event[7]);
		}
		break;

	case EVT_TYPE_STATUS_SS_RAW_SAT:
		if (event[2] == 1)
			pr_info("%s: SS Raw Saturated = %02X %02X %02X %02X %02X %02X\n",
				__func__, event[2], event[3], event[4],
				event[5], event[6], event[7]);
		else
			pr_info("%s: SS Raw No more Saturated = %02X %02X %02X %02X %02X %02X\n",
				__func__, event[2], event[3], event[4],
				event[5], event[6], event[7]);
		break;

	case EVT_TYPE_STATUS_WATER:
		if (event[2] == 1)
			pr_info("%s: Enter Water mode = %02X %02X %02X %02X %02X %02X\n",
				__func__, event[2], event[3], event[4],
				event[5], event[6], event[7]);
		else
			pr_info("%s: Exit Water mode = %02X %02X %02X %02X %02X %02X\n",
				__func__, event[2], event[3], event[4],
				event[5], event[6], event[7]);
		break;

	default:
		pr_err("%s: Received unhandled status event = %02X %02X %02X %02X %02X %02X %02X %02X\n",
			__func__, event[0], event[1], event[2], event[3],
			event[4], event[5], event[6], event[7]);
		break;
	}
	return false;
}


/* key events reported in the user report */
#ifdef PHONE_KEY
/* TODO: the customer should handle the events coming from the keys according
 * his needs
  * (this is just an sample code that report the click of a button after a
  * press->release action) */
/**
  * Event handler for status events (EVT_TYPE_USER_KEY)
  * Handle keys update events, the third byte of the event is a bitmask,
  * if the bit set means that the corresponding key is pressed.
  */
static void fts_key_event_handler(struct fts_ts_info *info,
				  unsigned char *event)
{
	/* int value; */
	pr_info("%s: Received event %02X %02X %02X %02X %02X %02X %02X %02X\n",
		__func__, event[0], event[1], event[2], event[3], event[4],
		event[5], event[6], event[7]);

	if (event[0] == EVT_ID_USER_REPORT && event[1] == EVT_TYPE_USER_KEY) {
		/* event[2] contain the bitmask of the keys that are actually
		 * pressed */

		if ((event[2] & FTS_KEY_0) == 0 && (key_mask & FTS_KEY_0) > 0) {
			pr_info("%s: Button HOME pressed and released!\n",
				__func__);
			fts_input_report_key(info, KEY_HOMEPAGE);
		}

		if ((event[2] & FTS_KEY_1) == 0 && (key_mask & FTS_KEY_1) > 0) {
			pr_info("%s: Button Back pressed and released!\n",
				__func__);
			fts_input_report_key(info, KEY_BACK);
		}

		if ((event[2] & FTS_KEY_2) == 0 && (key_mask & FTS_KEY_2) > 0) {
			pr_info("%s: Button Menu pressed!\n", __func__);
			fts_input_report_key(info, KEY_MENU);
		}

		key_mask = event[2];
	} else
		pr_err("%s: Invalid event passed as argument!\n", __func__);
}
#endif

/* gesture event must be handled in the user event handler */
#ifdef GESTURE_MODE
/* TODO: Customer should implement their own actions in respond of a gesture
 * event.
  * This is an example that simply print the gesture received and simulate
  * the click on a different button for each gesture. */
/**
  * Event handler for gesture events (EVT_TYPE_USER_GESTURE)
  * Handle gesture events and simulate the click on a different button
  * for any gesture detected (@link gesture_opt Gesture IDs @endlink)
  */
static void fts_gesture_event_handler(struct fts_ts_info *info, unsigned
				      char *event)
{
	int value;
	int needCoords = 0;

	pr_info("gesture event data: %02X %02X %02X %02X %02X %02X %02X %02X\n",
		event[0], event[1], event[2], event[3], event[4],
		event[5], event[6], event[7]);

	if (event[0] == EVT_ID_USER_REPORT && event[1] ==
	    EVT_TYPE_USER_GESTURE) {
		needCoords = 1;
		/* default read the coordinates for all gestures excluding
		 * double tap */

		switch (event[2]) {
		case GEST_ID_DBLTAP:
			value = KEY_WAKEUP;
			pr_info("%s: double tap !\n", __func__);
			needCoords = 0;
			break;

		case GEST_ID_AT:
			value = KEY_WWW;
			pr_info("%s: @ !\n", __func__);
			break;

		case GEST_ID_C:
			value = KEY_C;
			pr_info("%s: C !\n", __func__);
			break;

		case GEST_ID_E:
			value = KEY_E;
			pr_info("%s: e !\n", __func__);
			break;

		case GEST_ID_F:
			value = KEY_F;
			pr_info("%s: F !\n", __func__);
			break;

		case GEST_ID_L:
			value = KEY_L;
			pr_info("%s: L !\n", __func__);
			break;

		case GEST_ID_M:
			value = KEY_M;
			pr_info("%s: M !\n", __func__);
			break;

		case GEST_ID_O:
			value = KEY_O;
			pr_info("%s: O !\n", __func__);
			break;

		case GEST_ID_S:
			value = KEY_S;
			pr_info("%s: S !\n", __func__);
			break;

		case GEST_ID_V:
			value = KEY_V;
			pr_info("%s:  V !\n", __func__);
			break;

		case GEST_ID_W:
			value = KEY_W;
			pr_info("%s:  W !\n", __func__);
			break;

		case GEST_ID_Z:
			value = KEY_Z;
			pr_info("%s:  Z !\n", __func__);
			break;

		case GEST_ID_RIGHT_1F:
			value = KEY_RIGHT;
			pr_info("%s:  -> !\n", __func__);
			break;

		case GEST_ID_LEFT_1F:
			value = KEY_LEFT;
			pr_info("%s:  <- !\n", __func__);
			break;

		case GEST_ID_UP_1F:
			value = KEY_UP;
			pr_info("%s:  UP !\n", __func__);
			break;

		case GEST_ID_DOWN_1F:
			value = KEY_DOWN;
			pr_info("%s:  DOWN !\n", __func__);
			break;

		case GEST_ID_CARET:
			value = KEY_APOSTROPHE;
			pr_info("%s:  ^ !\n", __func__);
			break;

		case GEST_ID_LEFTBRACE:
			value = KEY_LEFTBRACE;
			pr_info("%s:  < !\n", __func__);
			break;

		case GEST_ID_RIGHTBRACE:
			value = KEY_RIGHTBRACE;
			pr_info("%s:  > !\n", __func__);
			break;

		default:
			pr_err("%s:  No valid GestureID!\n", __func__);
			goto gesture_done;
		}

		if (needCoords == 1)
			readGestureCoords(event);

		fts_input_report_key(info, value);

gesture_done:
		return;
	} else
		pr_err("%s: Invalid event passed as argument!\n", __func__);
}
#endif


/**
  * Event handler for user report events (EVT_ID_USER_REPORT)
  * Handle user events reported by the FW due to some interaction triggered
  * by an external user (press keys, perform gestures, etc.)
  */
static bool fts_user_report_event_handler(struct fts_ts_info *info, unsigned
					  char *event)
{
	switch (event[1]) {
#ifdef PHONE_KEY
	case EVT_TYPE_USER_KEY:
		fts_key_event_handler(info, event);
		break;
#endif

	case EVT_TYPE_USER_PROXIMITY:
		if (event[2] == 0)
			pr_err("%s No proximity!\n", __func__);
		else
			pr_err("%s Proximity Detected!\n", __func__);
		break;

#ifdef GESTURE_MODE
	case EVT_TYPE_USER_GESTURE:
		fts_gesture_event_handler(info, event);
		break;
#endif
	default:
		pr_err("%s: Received unhandled user report event = %02X %02X %02X %02X %02X %02X %02X %02X\n",
			__func__, event[0], event[1], event[2], event[3],
			event[4], event[5], event[6], event[7]);
		break;
	}
	return false;
}

static void heatmap_enable(void)
{
	unsigned char command[] = {0xA4, 0x06, LOCAL_HEATMAP_MODE};
	fts_write(command, 3);
}

static bool read_heatmap_raw(struct v4l2_heatmap *v4l2, strength_t *data)
{
	unsigned char heatmap_read_command[] = {0xA6, 0x00, 0x00};

	unsigned int num_elements;
	/* index for looping through the heatmap buffer read over the bus */
	unsigned int local_i;

	int result;

	/* old value of the counter, for comparison */
	static uint16_t counter;

	strength_t heatmap_value;
	/* final position of the heatmap value in the full heatmap frame */
	unsigned int frame_i;

	int heatmap_x, heatmap_y;
	int max_x = v4l2->format.width;
	int max_y = v4l2->format.height;

	struct heatmap_report report = {0};

	result = fts_writeRead(heatmap_read_command, 3,
		(uint8_t *) &report, sizeof(report));
	if (result != OK) {
		pr_err("%s: i2c read failed, fts_writeRead returned %i",
			__func__, result);
		return false;
	}
	if (report.mode != LOCAL_HEATMAP_MODE) {
		pr_err("Touch IC not in local heatmap mode: %X %X %i",
			report.prefix, report.mode, report.counter);
		return false;
	}

	le16_to_cpus(&report.counter); /* enforce little-endian order */
	if (report.counter == counter && counter != 0) {
		/*
		 * We shouldn't make ordered comparisons because of
		 * potential overflow, but at least the value
		 * should have changed. If the value remains the same,
		 * but we are processing a new interrupt,
		 * this could indicate slowness in the interrupt handler.
		 */
		pr_warn("Heatmap frame has stale counter value %i",
			counter);
	}
	counter = report.counter;
	num_elements = report.size_x * report.size_y;
	if (num_elements > LOCAL_HEATMAP_WIDTH * LOCAL_HEATMAP_HEIGHT) {
		pr_err("Unexpected heatmap size: %i x %i",
				report.size_x, report.size_y);
		return false;
	}

	/* set all to zero, will only write to non-zero locations in the loop */
	memset(data, 0, max_x * max_y * sizeof(data[0]));
	/* populate the data buffer, rearranging into final locations */
	for (local_i = 0; local_i < num_elements; local_i++) {
		/* enforce little-endian order */
		le16_to_cpus(&report.data[local_i]);
		heatmap_value = report.data[local_i];

		if (heatmap_value == 0) {
			/* Already set to zero. Nothing to do */
			continue;
		}

		heatmap_x = report.offset_x + (local_i % report.size_x);
		heatmap_y = report.offset_y + (local_i / report.size_x);

		if (heatmap_x < 0 || heatmap_x >= max_x ||
			heatmap_y < 0 || heatmap_y >= max_y) {
				pr_err("Invalid x or y: (%i, %i), value=%i, ending loop\n",
					heatmap_x, heatmap_y, heatmap_value);
				return false;
		}
		frame_i = heatmap_y * max_x + heatmap_x;
		data[frame_i] = heatmap_value;
	}
	return true;
}

/**
  * Bottom Half Interrupt Handler function
  * This handler is called each time there is at least one new event in the FIFO
  * and the interrupt pin of the IC goes low. It will read all the events from
  * the FIFO and dispatch them to the proper event handler according the event
  * ID
  */
static irqreturn_t fts_interrupt_handler(int irq, void *handle)
{
	struct fts_ts_info *info = handle;
	int error = 0, count = 0;
	unsigned char regAdd = FIFO_CMD_READALL;
	unsigned char data[FIFO_EVENT_SIZE * FIFO_DEPTH];
	unsigned char eventId;
	const unsigned char EVENTS_REMAINING_POS = 7;
	const unsigned char EVENTS_REMAINING_MASK = 0x1F;
	unsigned char events_remaining = 0;
	unsigned char *evt_data;

	/* It is possible that interrupts were disabled while the handler is
	 * executing, before acquiring the mutex. If so, simply return.
	 */
	if (fts_set_bus_ref(info, FTS_BUS_REF_IRQ, true) < 0) {
		fts_set_bus_ref(info, FTS_BUS_REF_IRQ, false);
		return IRQ_HANDLED;
	}

	/* prevent CPU from entering deep sleep */
	pm_qos_update_request(&info->pm_qos_req, 100);

	__pm_wakeup_event(&info->wakesrc, jiffies_to_msecs(HZ));

	/* Read the first FIFO event and the number of events remaining */
	error = fts_writeReadU8UX(regAdd, 0, 0, data, FIFO_EVENT_SIZE,
				  DUMMY_FIFO);
	events_remaining = data[EVENTS_REMAINING_POS] & EVENTS_REMAINING_MASK;
	events_remaining = (events_remaining > FIFO_DEPTH - 1) ?
			   FIFO_DEPTH - 1 : events_remaining;

	/* Drain the rest of the FIFO, up to 31 events */
	if (error == OK && events_remaining > 0) {
		error = fts_writeReadU8UX(regAdd, 0, 0, &data[FIFO_EVENT_SIZE],
					  FIFO_EVENT_SIZE * events_remaining,
					  DUMMY_FIFO);
	}
	if (error != OK) {
		pr_err("Error (%08X) while reading from FIFO in fts_event_handler\n",
			error);
	} else {
		for (count = 0; count < events_remaining + 1; count++) {
			evt_data = &data[count * FIFO_EVENT_SIZE];

			if (evt_data[0] == EVT_ID_NOEVENT)
				break;

			eventId = evt_data[0] >> 4;

			/* Ensure event ID is within bounds */
			if (eventId < NUM_EVT_ID)
				info->event_dispatch_table[eventId](info,
					evt_data);
		}
	}

	if (info->touch_id == 0)
		input_report_key(info->input_dev, BTN_TOUCH, 0);

	input_sync(info->input_dev);

	heatmap_read(&info->v4l2, info->timestamp);

	pm_qos_update_request(&info->pm_qos_req, PM_QOS_DEFAULT_VALUE);
	fts_set_bus_ref(info, FTS_BUS_REF_IRQ, false);
	return IRQ_HANDLED;
}
/** @}*/


/**
  *	Implement the fw update and initialization flow of the IC that should
  *	be executed at every boot up. The function perform a fw update of the
  *	IC in case of crc error or a new fw version and then understand if the
  *	IC need to be re-initialized again.
  *
  *	@return  OK if success or an error code which specify the type of error
  *	encountered
  */
static int fts_fw_update(struct fts_ts_info *info)
{
	u8 error_to_search[4] = { EVT_TYPE_ERROR_CRC_CX_HEAD,
				  EVT_TYPE_ERROR_CRC_CX,
				  EVT_TYPE_ERROR_CRC_CX_SUB_HEAD,
				  EVT_TYPE_ERROR_CRC_CX_SUB };
	int ret = 0;
	int init_type = NO_INIT;

#ifdef PRE_SAVED_METHOD
	int keep_cx = 1;
#else
	int keep_cx = 0;
#endif


	pr_info("Fw Auto Update is starting...\n");

	/* Check CRC status */
	ret = fts_crc_check();
	if (ret > OK) {
		pr_err("%s: CRC Error or NO FW!\n", __func__);
		info->reflash_fw = 1;
	} else {
		pr_info("%s: NO CRC Error or Impossible to read CRC register!\n",
			__func__);
	}
	ret = flashProcedure(info->board->fw_name, info->reflash_fw, keep_cx);
	if ((ret & 0xF000000F) == ERROR_FILE_NOT_FOUND) {
		pr_err("%s: firmware file not found. Bypassing update.\n",
			__func__);
		ret = 0;
		goto out;
	} else if ((ret & 0xFF000000) == ERROR_FLASH_PROCEDURE) {
		pr_err("%s: firmware update failed; retrying. ERROR %08X\n",
			__func__, ret);
		/* Power cycle the touch IC */
		fts_chip_powercycle(info);
		ret = flashProcedure(info->board->fw_name, info->reflash_fw,
				     keep_cx);
		if ((ret & 0xFF000000) == ERROR_FLASH_PROCEDURE) {
			pr_err("%s: firmware update failed again! ERROR %08X\n",
				__func__, ret);
			pr_err("Fw Auto Update Failed!\n");
			return ret;
		}
	}
	info->reflash_fw = 0;

	pr_info("%s: Verifying if CX CRC Error...\n", __func__);
	ret = fts_system_reset();
	if (ret >= OK) {
		ret = pollForErrorType(error_to_search, 4);
		if (ret < OK) {
			pr_info("%s: No Cx CRC Error Found!\n", __func__);
			pr_info("%s: Verifying if Panel CRC Error...\n",
				__func__);
			error_to_search[0] = EVT_TYPE_ERROR_CRC_PANEL_HEAD;
			error_to_search[1] = EVT_TYPE_ERROR_CRC_PANEL;
			ret = pollForErrorType(error_to_search, 2);
			if (ret < OK) {
				pr_info("%s: No Panel CRC Error Found!\n",
					__func__);
				init_type = NO_INIT;
			} else {
				pr_err("%s: Panel CRC Error FOUND! CRC ERROR = %02X\n",
					__func__, ret);
				init_type = SPECIAL_PANEL_INIT;
			}
		} else {
			pr_err("%s: Cx CRC Error FOUND! CRC ERROR = %02X\n",
				__func__, ret);

			/** This path of the code is used only in case there is
			  * a CRC error in code or config which not allow the fw
			  * to compute the CRC in the CX before
			  */
			pr_info("%s: Try to recovery with CX in fw file...\n",
				__func__);
			ret = flashProcedure(info->board->fw_name, CRC_CX, 0);
			pr_info("%s: Refresh panel init data", __func__);
		}
	} else {
		/* Skip initialization because the real state is unknown */
		pr_err("%s: Error while executing system reset! ERROR %08X\n",
			__func__, ret);
	}

	if (init_type == NO_INIT) {
#ifdef PRE_SAVED_METHOD
		if (systemInfo.u8_cfgAfeVer != systemInfo.u8_cxAfeVer) {
			init_type = SPECIAL_FULL_PANEL_INIT;
			pr_err("%s: Different CX AFE Ver: %02X != %02X... Execute FULL Panel Init!\n",
				__func__, systemInfo.u8_cfgAfeVer,
				systemInfo.u8_cxAfeVer);
		} else
#endif
		if (systemInfo.u8_cfgAfeVer != systemInfo.u8_panelCfgAfeVer) {
			init_type = SPECIAL_PANEL_INIT;
			pr_err("%s: Different Panel AFE Ver: %02X != %02X... Execute Panel Init!\n",
				__func__, systemInfo.u8_cfgAfeVer,
				systemInfo.u8_panelCfgAfeVer);
		} else
			init_type = NO_INIT;
	}

out:
	/** Reinitialize after a complete FW update or if the initialization
	  * status is not correct.
	  */
	if (init_type != NO_INIT) {
		ret = fts_chip_initialization(info, init_type);
		if (ret < OK) {
			pr_err("%s: Cannot initialize the chip ERROR %08X\n",
				__func__, ret);
		}

		/* Reset after initialization */
		ret = fts_system_reset();
		if (ret < OK) {
			pr_err("%s: Reset failed, ERROR %08X\n", __func__,
			       ret);
		}
	}

	ret = fts_init_sensing(info);
	if (ret < OK) {
		pr_err("Cannot initialize the hardware device ERROR %08X\n",
			ret);
	}

	pr_err("Fw Update Finished! error = %08X\n", ret);
	return ret;
}

#ifndef FW_UPDATE_ON_PROBE
/**
  *	Function called by the delayed workthread executed after the probe in
  * order to perform the fw update flow
  *	@see  fts_fw_update()
  */
static void fts_fw_update_auto(struct work_struct *work)
{
	struct delayed_work *fwu_work = container_of(work, struct delayed_work,
						     work);
	struct fts_ts_info *info = container_of(fwu_work, struct fts_ts_info,
						fwu_work);

	fts_set_bus_ref(info, FTS_BUS_REF_FW_UPDATE, true);
	fts_fw_update(info);
	fts_set_bus_ref(info, FTS_BUS_REF_FW_UPDATE, false);
}
#endif

/* TODO: define if need to do the full mp at the boot */
/**
  *	Execute the initialization of the IC (supporting a retry mechanism),
  * checking also the resulting data
  *	@see  production_test_main()
  */
static int fts_chip_initialization(struct fts_ts_info *info, int init_type)
{
	int ret2 = 0;
	int retry;
	int initretrycnt = 0;

	/* initialization error, retry initialization */
	for (retry = 0; retry <= RETRY_INIT_BOOT; retry++) {
		ret2 = production_test_initialization(init_type);
		if (ret2 == OK)
			break;
		initretrycnt++;
		pr_err("initialization cycle count = %04d - ERROR %08X\n",
			initretrycnt, ret2);
		fts_chip_powercycle(info);
	}

	if (ret2 < OK)	/* initialization error */
		pr_err("fts initialization failed 3 times\n");


	return ret2;
}


static irqreturn_t fts_isr(int irq, void *handle)
{
	struct fts_ts_info *info = handle;

	info->timestamp = ktime_get_ns();

	return IRQ_WAKE_THREAD;
}

/**
  * Initialize the dispatch table with the event handlers for any possible event
  * ID
  * Set IRQ pin behavior (level triggered low)
  * Register top half interrupt handler function.
  * @see fts_interrupt_handler()
  */
static int fts_interrupt_install(struct fts_ts_info *info)
{
	int i, error = 0;

	info->event_dispatch_table = kzalloc(sizeof(event_dispatch_handler_t) *
					     NUM_EVT_ID, GFP_KERNEL);

	if (!info->event_dispatch_table) {
		pr_err("OOM allocating event dispatch table\n");
		return -ENOMEM;
	}

	for (i = 0; i < NUM_EVT_ID; i++)
		info->event_dispatch_table[i] = fts_nop_event_handler;

	install_handler(info, ENTER_POINT, enter_pointer);
	install_handler(info, LEAVE_POINT, leave_pointer);
	install_handler(info, MOTION_POINT, motion_pointer);
	install_handler(info, ERROR, error);
	install_handler(info, CONTROLLER_READY, controller_ready);
	install_handler(info, STATUS_UPDATE, status);
	install_handler(info, USER_REPORT, user_report);

	/* disable interrupts in any case */
	error = fts_disableInterrupt();
	if (error) {
		return error;
	}

	error = request_threaded_irq(info->client->irq, fts_isr,
			fts_interrupt_handler, IRQF_ONESHOT | IRQF_TRIGGER_LOW,
			FTS_TS_DRV_NAME, info);

	if (error) {
		pr_err("Request irq failed\n");
		kfree(info->event_dispatch_table);
	}

	return error;
}

/**
  *	Clean the dispatch table and the free the IRQ.
  *	This function is called when the driver need to be removed
  */
static void fts_interrupt_uninstall(struct fts_ts_info *info)
{
	fts_disableInterrupt();

	kfree(info->event_dispatch_table);

	free_irq(info->client->irq, info);
}

/**@}*/

/**
  * This function try to attempt to communicate with the IC for the first time
  * during the boot up process in order to read the necessary info for the
  * following stages.
  * The function execute a system reset, read fundamental info (system info)
  * @return OK if success or an error code which specify the type of error
  */
static int fts_init(struct fts_ts_info *info)
{
	int error;


	error = fts_system_reset();
	if (error < OK && isI2cError(error)) {
		pr_err("Cannot reset the device! ERROR %08X\n", error);
		return error;
	} else {
		if (error == (ERROR_TIMEOUT | ERROR_SYSTEM_RESET_FAIL)) {
			pr_err("Setting default Sys INFO!\n");
			error = defaultSysInfo(0);
		} else {
			error = readSysInfo(0);	/* system reset OK */
			if (error < OK) {
				if (!isI2cError(error))
					error = OK;
				pr_err("Cannot read Sys Info! ERROR %08X\n",
					error);
			}
		}
	}

	return error;
}

/**
  * Execute a power cycle in the IC, toggling the power lines (AVDD and DVDD)
  * @param info pointer to fts_ts_info struct which contain information of the
  * regulators
  * @return 0 if success or another value if fail
  */
int fts_chip_powercycle(struct fts_ts_info *info)
{
	int error = 0;

	pr_info("%s: Power Cycle Starting...\n", __func__);
	pr_info("%s: Disabling IRQ...\n", __func__);
	/** if IRQ pin is short with DVDD a call to the ISR will triggered when
	  * the regulator is turned off if IRQ not disabled */
	fts_disableInterrupt();

	if (info->vdd_reg) {
		error = regulator_disable(info->vdd_reg);
		if (error < 0)
			pr_err("%s: Failed to disable DVDD regulator\n",
				__func__);
	}

	if (info->avdd_reg) {
		error = regulator_disable(info->avdd_reg);
		if (error < 0)
			pr_err("%s: Failed to disable AVDD regulator\n",
				__func__);
	}

	if (info->board->reset_gpio != GPIO_NOT_DEFINED)
		gpio_set_value(info->board->reset_gpio, 0);
	else
		mdelay(300);

	/* in FTI power up first the digital and then the analog */
	if (info->vdd_reg) {
		error = regulator_enable(info->vdd_reg);
		if (error < 0)
			pr_err("%s: Failed to enable DVDD regulator\n",
				__func__);
	}

	mdelay(1);

	if (info->avdd_reg) {
		error = regulator_enable(info->avdd_reg);
		if (error < 0)
			pr_err("%s: Failed to enable AVDD regulator\n",
				__func__);
	}

	mdelay(5);	/* time needed by the regulators for reaching the regime
			 * values */


	if (info->board->reset_gpio != GPIO_NOT_DEFINED) {
		mdelay(10);	/* time to wait before bring up the reset
				  * gpio after the power up of the regulators */
		gpio_set_value(info->board->reset_gpio, 1);
	}

	release_all_touches(info);

	pr_info("%s: Power Cycle Finished! ERROR CODE = %08x\n",
		__func__, error);
	setSystemResetedUp(1);
	setSystemResetedDown(1);
	return error;
}


/**
  * Complete the boot up process, initializing the sensing of the IC according
  * to the current setting chosen by the host
  * Register the notifier for the suspend/resume actions and the event handler
  * @return OK if success or an error code which specify the type of error
  */
static int fts_init_sensing(struct fts_ts_info *info)
{
	int error = 0;

	error |= msm_drm_register_client(&info->notifier);/* register the
							   * suspend/resume
							   * function */
	error |= fts_interrupt_install(info);	/* register event handler */
	error |= fts_mode_handler(info, 0);	/* enable the features and
						 * sensing */
	/* error |= fts_enableInterrupt(); */	/* enable the interrupt */
	error |= fts_resetDisableIrqCount();

	if (error < OK)
		pr_err("%s Init after Probe error (ERROR = %08X)\n",
			__func__, error);

	heatmap_enable();

	return error;
}

/* TODO: change this function according with the needs of customer in terms
  * of feature to enable/disable */

/**
  * @ingroup mode_section
  * @{
  */
/**
  * The function handle the switching of the mode in the IC enabling/disabling
  * the sensing and the features set from the host
  * @param info pointer to fts_ts_info which contains info about the device and
  * its hw setup
  * @param force if 1, the enabling/disabling command will be send even
  * if the feature was already enabled/disabled otherwise it will judge if
  * the feature changed status or the IC had a system reset
  * @return OK if success or an error code which specify the type of error
  */
static int fts_mode_handler(struct fts_ts_info *info, int force)
{
	int res = OK;
	int ret = OK;
	u8 settings[4] = { 0 };

	/* disable irq wake because resuming from gesture mode */
	if (IS_POWER_MODE(info->mode, SCAN_MODE_LOW_POWER) &&
	    (info->resume_bit == 1))
		disable_irq_wake(info->client->irq);

	info->mode = MODE_NOTHING;	/* initialize the mode to nothing
					  * in order to be updated depending
					  * on the features enabled */

	pr_debug("%s: Mode Handler starting...\n", __func__);
	switch (info->resume_bit) {
	case 0:	/* screen down */
		pr_debug("%s: Screen OFF...\n", __func__);
		/* do sense off in order to avoid the flooding of the fifo with
		  * touch events if someone is touching the panel during suspend
		  **/
		pr_info("%s: Sense OFF!\n", __func__);
		/* for speed reason (no need to check echo in this case and
		  * interrupt can be enabled) */
		ret = setScanMode(SCAN_MODE_ACTIVE, 0x00);
		res |= ret;	/* to avoid warning unsused ret variable when a
				  * ll the features are disabled */

#ifdef GESTURE_MODE
		if (info->gesture_enabled == 1) {
			pr_info("%s: enter in gesture mode !\n",
				 __func__);
			res = enterGestureMode(isSystemResettedDown());
			if (res >= OK) {
				enable_irq_wake(info->client->irq);
				fromIDtoMask(FEAT_SEL_GESTURE,
					     (u8 *)&info->mode,
					     sizeof(info->mode));
				MODE_LOW_POWER(info->mode, 0);
			} else
				pr_err("%s: enterGestureMode failed! ERROR %08X recovery in senseOff...\n",
					__func__, res);
		}
#endif

		setSystemResetedDown(0);
		break;

	case 1:	/* screen up */
		pr_debug("%s: Screen ON...\n", __func__);

#ifdef GLOVE_MODE
		if ((info->glove_enabled == FEAT_ENABLE &&
		     isSystemResettedUp()) || force == 1) {
			pr_info("%s: Glove Mode setting...\n", __func__);
			settings[0] = info->glove_enabled;
			/* required to satisfy also the disable case */
			ret = setFeatures(FEAT_SEL_GLOVE, settings, 1);
			if (ret < OK)
				pr_err("%s: error during setting GLOVE_MODE! ERROR %08X\n",
					__func__, ret);
			res |= ret;

			if (ret >= OK && info->glove_enabled == FEAT_ENABLE) {
				fromIDtoMask(FEAT_SEL_GLOVE, (u8 *)&info->mode,
					     sizeof(info->mode));
				pr_info("%s: GLOVE_MODE Enabled!\n", __func__);
			} else
				pr_info("%s: GLOVE_MODE Disabled!\n", __func__);
		}

#endif

#ifdef COVER_MODE
		if ((info->cover_enabled == FEAT_ENABLE &&
		     isSystemResettedUp()) || force == 1) {
			pr_info("%s: Cover Mode setting...\n", __func__);
			settings[0] = info->cover_enabled;
			ret = setFeatures(FEAT_SEL_COVER, settings, 1);
			if (ret < OK)
				pr_err("%s: error during setting COVER_MODE! ERROR %08X\n",
					__func__, ret);
			res |= ret;

			if (ret >= OK && info->cover_enabled == FEAT_ENABLE) {
				fromIDtoMask(FEAT_SEL_COVER, (u8 *)&info->mode,
					     sizeof(info->mode));
				pr_info("%s: COVER_MODE Enabled!\n", __func__);
			} else
				pr_info("%s: COVER_MODE Disabled!\n", __func__);
		}
#endif
#ifdef CHARGER_MODE
		if ((info->charger_enabled > 0 && isSystemResettedUp()) ||
		    force == 1) {
			pr_info("%s: Charger Mode setting...\n", __func__);

			settings[0] = info->charger_enabled;
			ret = setFeatures(FEAT_SEL_CHARGER, settings, 1);
			if (ret < OK)
				pr_err("%s: error during setting CHARGER_MODE! ERROR %08X\n",
					__func__, ret);
			res |= ret;

			if (ret >= OK && info->charger_enabled == FEAT_ENABLE) {
				fromIDtoMask(FEAT_SEL_CHARGER,
					     (u8 *)&info->mode,
					     sizeof(info->mode));
				pr_info("%s: CHARGER_MODE Enabled!\n",
					__func__);
			} else
				pr_info("%s: CHARGER_MODE Disabled!\n",
					__func__);
		}
#endif


#ifdef GRIP_MODE
		if ((info->grip_enabled == FEAT_ENABLE &&
		     isSystemResettedUp()) || force == 1) {
			pr_info("%s: Grip Mode setting...\n", __func__);
			settings[0] = info->grip_enabled;
			ret = setFeatures(FEAT_SEL_GRIP, settings, 1);
			if (ret < OK)
				pr_err("%s: error during setting GRIP_MODE! ERROR %08X\n",
					__func__, ret);
			res |= ret;

			if (ret >= OK && info->grip_enabled == FEAT_ENABLE) {
				fromIDtoMask(FEAT_SEL_GRIP, (u8 *)&info->mode,
					     sizeof(info->mode));
				pr_info("%s: GRIP_MODE Enabled!\n", __func__);
			} else
				pr_info("%s: GRIP_MODE Disabled!\n", __func__);
		}
#endif
		/* If some selective scan want to be enabled can be done
		  * an or of the following options
		  */
		/* settings[0] = ACTIVE_MULTI_TOUCH | ACTIVE_KEY | */
		/*		ACTIVE_HOVER | ACTIVE_PROXIMITY | */
		/*		ACTIVE_FORCE; */
		settings[0] = 0xFF;	/* enable all the possible scans mode
					  * supported by the config */
		pr_info("%s: Sense ON!\n", __func__);
		res |= setScanMode(SCAN_MODE_ACTIVE, settings[0]);
		info->mode |= (SCAN_MODE_ACTIVE << 24);
		MODE_ACTIVE(info->mode, settings[0]);


		setSystemResetedUp(0);
		break;

	default:
		pr_err("%s: invalid resume_bit value = %d! ERROR %08X\n",
			__func__, info->resume_bit, ERROR_OP_NOT_ALLOW);
		res = ERROR_OP_NOT_ALLOW;
	}


	pr_debug("%s: Mode Handler finished! res = %08X mode = %08X\n",
		__func__, res, info->mode);
	return res;
}

/**
  * Configure the switch GPIO to toggle bus master between AP and SLPI.
  * gpio_value takes one of
  * { FTS_SWITCH_GPIO_VALUE_SLPI_MASTER, FTS_SWITCH_GPIO_VALUE_AP_MASTER }
  */
static void fts_set_switch_gpio(struct fts_ts_info *info, int gpio_value)
{
	int retval;
	unsigned int gpio = info->board->switch_gpio;

	if (!gpio_is_valid(gpio))
		return;

	pr_debug("%s: toggling i2c switch to %s\n", __func__,
		 gpio_value == FTS_SWITCH_GPIO_VALUE_AP_MASTER ? "AP" : "SLPI");

	retval = gpio_direction_output(gpio, gpio_value);
	if (retval < 0)
		pr_err("%s: Failed to toggle switch_gpio, err = %d\n",
			__func__, retval);
}

/**
  * Resume work function which perform a system reset, clean all the touches
  * from the linux input system and prepare the ground for enabling the sensing
  */
static void fts_resume_work(struct work_struct *work)
{
	struct fts_ts_info *info;

	info = container_of(work, struct fts_ts_info, resume_work);

	if (!info->sensor_sleep)
		return;

#ifdef CONFIG_TOUCHSCREEN_TBN
	if (info->tbn)
		tbn_request_bus(info->tbn);
#endif

	fts_set_switch_gpio(info, FTS_SWITCH_GPIO_VALUE_AP_MASTER);

	__pm_wakeup_event(&info->wakesrc, jiffies_to_msecs(HZ));

	info->resume_bit = 1;

	fts_system_reset();

	release_all_touches(info);

	fts_mode_handler(info, 0);

	info->sensor_sleep = false;

	/* heatmap must be enabled after every chip reset (fts_system_reset) */
	heatmap_enable();

	fts_enableInterrupt();

	complete_all(&info->bus_resumed);
}

/**
  * Suspend work function which clean all the touches from Linux input system
  * and prepare the ground to disabling the sensing or enter in gesture mode
  */
static void fts_suspend_work(struct work_struct *work)
{
	struct fts_ts_info *info;

	info = container_of(work, struct fts_ts_info, suspend_work);

	if (info->sensor_sleep)
		return;

	reinit_completion(&info->bus_resumed);

	__pm_wakeup_event(&info->wakesrc, jiffies_to_msecs(HZ));

	info->resume_bit = 0;

	fts_mode_handler(info, 0);

	release_all_touches(info);

	info->sensor_sleep = true;

	fts_disableInterrupt();

	fts_set_switch_gpio(info, FTS_SWITCH_GPIO_VALUE_SLPI_MASTER);

#ifdef CONFIG_TOUCHSCREEN_TBN
	if (info->tbn)
		tbn_release_bus(info->tbn);
#endif
}
/** @}*/


static void fts_aggregate_bus_state(struct fts_ts_info *info)
{
	pr_debug("%s: bus_refmask = 0x%02X.\n", __func__,
		 info->bus_refmask);

	/* Complete or cancel any outstanding transitions */
	cancel_work_sync(&info->suspend_work);
	cancel_work_sync(&info->resume_work);

	if ((info->bus_refmask == 0 && info->sensor_sleep) ||
	    (info->bus_refmask != 0 && !info->sensor_sleep))
		return;

	if (info->bus_refmask == 0)
		queue_work(info->event_wq, &info->suspend_work);
	else
		queue_work(info->event_wq, &info->resume_work);
}

int fts_set_bus_ref(struct fts_ts_info *info, u16 ref, bool enable)
{
	int result = OK;

	mutex_lock(&info->bus_mutex);

	if ((enable && (info->bus_refmask & ref)) ||
	    (!enable && !(info->bus_refmask & ref))) {
		pr_err("%s: reference is unexpectedly set: mask=0x%04X, ref=0x%04X, enable=%d.\n",
			__func__, info->bus_refmask, ref, enable);
		mutex_unlock(&info->bus_mutex);
		return ERROR_OP_NOT_ALLOW;
	}

	if (enable) {
		/* IRQs can only keep the bus active. IRQs received while the
		 * bus is transferred to SLPI should be ignored.
		 */
		if (ref == FTS_BUS_REF_IRQ && info->bus_refmask == 0)
			result = ERROR_OP_NOT_ALLOW;
		else
			info->bus_refmask |= ref;
	} else
		info->bus_refmask &= ~ref;
	fts_aggregate_bus_state(info);

	mutex_unlock(&info->bus_mutex);

	/* When triggering a wake, wait up to one second to resume. SCREEN_ON
	 * and IRQ references do not need to wait.
	 */
	if (enable && ref != FTS_BUS_REF_SCREEN_ON && ref != FTS_BUS_REF_IRQ) {
		wait_for_completion_timeout(&info->bus_resumed, HZ);
		if (info->sensor_sleep) {
			pr_err("%s: Failed to wake the touch bus: mask=0x%04X, ref=0x%04X, enable=%d.\n",
			       __func__, info->bus_refmask, ref, enable);
			result = ERROR_TIMEOUT;
		}
	}

	return result;
}

/**
  * Callback function used to detect the suspend/resume events generated by
  * clicking the power button.
  * This function schedule a suspend or resume work according to the event
  * received.
  */
static int fts_screen_state_chg_callback(struct notifier_block *nb,
					 unsigned long val, void *data)
{
	struct fts_ts_info *info = container_of(nb, struct fts_ts_info,
						notifier);
	struct msm_drm_notifier *evdata = data;
	unsigned int blank;

	if (val != MSM_DRM_EVENT_BLANK && val != MSM_DRM_EARLY_EVENT_BLANK)
		return NOTIFY_DONE;

	if (!info || !evdata || !evdata->data) {
		pr_info("%s: Bad fts notifier call!\n", __func__);
		return NOTIFY_DONE;
	}

	pr_debug("%s: fts notifier begin!\n", __func__);

	/* finish processing any events on queue */
	flush_workqueue(info->event_wq);

	blank = *(int *) (evdata->data);
	switch (blank) {
	case MSM_DRM_BLANK_POWERDOWN:
	case MSM_DRM_BLANK_LP:
		if (val == MSM_DRM_EARLY_EVENT_BLANK) {
			pr_info("%s: BLANK\n", __func__);
			fts_set_bus_ref(info, FTS_BUS_REF_SCREEN_ON, false);
		}
		break;
	case MSM_DRM_BLANK_UNBLANK:
		if (val == MSM_DRM_EVENT_BLANK) {
			pr_info("%s: UNBLANK\n", __func__);
			fts_set_bus_ref(info, FTS_BUS_REF_SCREEN_ON, true);
		}
		break;
	}
	return NOTIFY_OK;
}

static struct notifier_block fts_noti_block = {
	.notifier_call = fts_screen_state_chg_callback,
};

/**
  * From the name of the power regulator get/put the actual regulator structs
  * (copying their references into fts_ts_info variable)
  * @param info pointer to fts_ts_info which contains info about the device and
  * its hw setup
  * @param get if 1, the regulators are get otherwise they are put (released)
  * back to the system
  * @return OK if success or an error code which specify the type of error
  */
static int fts_get_reg(struct fts_ts_info *info, bool get)
{
	int retval;
	const struct fts_hw_platform_data *bdata = info->board;

	if (!get) {
		retval = 0;
		goto regulator_put;
	}

	if ((bdata->vdd_reg_name != NULL) && (*bdata->vdd_reg_name != 0)) {
		info->vdd_reg = regulator_get(info->dev, bdata->vdd_reg_name);
		if (IS_ERR(info->vdd_reg)) {
			pr_err("%s: Failed to get power regulator\n", __func__);
			retval = PTR_ERR(info->vdd_reg);
			goto regulator_put;
		}
	}

	if ((bdata->avdd_reg_name != NULL) && (*bdata->avdd_reg_name != 0)) {
		info->avdd_reg = regulator_get(info->dev, bdata->avdd_reg_name);
		if (IS_ERR(info->avdd_reg)) {
			pr_err("%s: Failed to get bus pullup regulator\n",
				__func__);
			retval = PTR_ERR(info->avdd_reg);
			goto regulator_put;
		}
	}

	return OK;

regulator_put:
	if (info->vdd_reg) {
		regulator_put(info->vdd_reg);
		info->vdd_reg = NULL;
	}

	if (info->avdd_reg) {
		regulator_put(info->avdd_reg);
		info->avdd_reg = NULL;
	}

	return retval;
}


/**
  * Enable or disable the power regulators
  * @param info pointer to fts_ts_info which contains info about the device and
  * its hw setup
  * @param enable if 1, the power regulators are turned on otherwise they are
  * turned off
  * @return OK if success or an error code which specify the type of error
  */
static int fts_enable_reg(struct fts_ts_info *info, bool enable)
{
	int retval;

	if (!enable) {
		retval = 0;
		goto disable_pwr_reg;
	}

	if (info->vdd_reg) {
		retval = regulator_enable(info->vdd_reg);
		if (retval < 0) {
			pr_err("%s: Failed to enable bus regulator\n",
				__func__);
			goto exit;
		}
	}

	if (info->avdd_reg) {
		retval = regulator_enable(info->avdd_reg);
		if (retval < 0) {
			pr_err("%s: Failed to enable power regulator\n",
				__func__);
			goto disable_bus_reg;
		}
	}

	return OK;

disable_pwr_reg:
	if (info->avdd_reg)
		regulator_disable(info->avdd_reg);

disable_bus_reg:
	if (info->vdd_reg)
		regulator_disable(info->vdd_reg);

exit:
	return retval;
}

/**
  * Configure a GPIO according to the parameters
  * @param gpio gpio number
  * @param config if true, the gpio is set up otherwise it is free
  * @param dir direction of the gpio, 0 = in, 1 = out
  * @param state initial value (if the direction is in, this parameter is
  * ignored)
  * return error code
  */
static int fts_gpio_setup(int gpio, bool config, int dir, int state)
{
	int retval = 0;
	unsigned char buf[16];

	if (config) {
		scnprintf(buf, sizeof(buf), "fts_gpio_%u\n", gpio);

		retval = gpio_request(gpio, buf);
		if (retval) {
			pr_err("%s: Failed to get gpio %d (code: %d)",
				__func__, gpio, retval);
			return retval;
		}

		if (dir == 0)
			retval = gpio_direction_input(gpio);
		else
			retval = gpio_direction_output(gpio, state);
		if (retval) {
			pr_err("%s: Failed to set gpio %d direction",
				__func__, gpio);
			return retval;
		}
	} else
		gpio_free(gpio);

	return retval;
}

/**
  * Setup the IRQ and RESET (if present) gpios.
  * If the Reset Gpio is present it will perform a cycle HIGH-LOW-HIGH in order
  * to assure that the IC has been reset properly
  */
static int fts_set_gpio(struct fts_ts_info *info)
{
	int retval;
	struct fts_hw_platform_data *bdata =
		info->board;

	retval = fts_gpio_setup(bdata->irq_gpio, true, 0, 0);
	if (retval < 0) {
		pr_err("%s: Failed to configure irq GPIO\n", __func__);
		goto err_gpio_irq;
	}

	if (gpio_is_valid(bdata->switch_gpio)) {
		retval = fts_gpio_setup(bdata->switch_gpio, true, 1, 1);
		if (retval < 0)
			pr_err("%s: Failed to configure I2C switch\n",
				__func__);
	}

	if (bdata->reset_gpio >= 0) {
		retval = fts_gpio_setup(bdata->reset_gpio, true, 1, 0);
		if (retval < 0) {
			pr_err("%s: Failed to configure reset GPIO\n",
				__func__);
			goto err_gpio_reset;
		}
	}
	if (bdata->reset_gpio >= 0) {
		gpio_set_value(bdata->reset_gpio, 0);
		mdelay(10);
		gpio_set_value(bdata->reset_gpio, 1);
	}

	return OK;

err_gpio_reset:
	fts_gpio_setup(bdata->irq_gpio, false, 0, 0);
	bdata->reset_gpio = GPIO_NOT_DEFINED;
err_gpio_irq:
	return retval;
}

/**
  * Retrieve and parse the hw information from the device tree node defined in
  * the system.
  * the most important information to obtain are: IRQ and RESET gpio numbers,
  * power regulator names
  * In the device file node is possible to define additional optional
  * information
  * that can be parsed here.
  */
static int parse_dt(struct device *dev, struct fts_hw_platform_data *bdata)
{
	int retval;
	const char *name;
	struct device_node *np = dev->of_node;
	u32 coords[2];

	bdata->switch_gpio = of_get_named_gpio(np, "st,switch_gpio", 0);
	pr_info("switch_gpio = %d\n", bdata->switch_gpio);

	bdata->irq_gpio = of_get_named_gpio_flags(np, "st,irq-gpio", 0, NULL);

	pr_info("irq_gpio = %d\n", bdata->irq_gpio);


	retval = of_property_read_string(np, "st,regulator_dvdd", &name);
	if (retval == -EINVAL)
		bdata->vdd_reg_name = NULL;
	else if (retval < 0)
		return retval;
	else {
		bdata->vdd_reg_name = name;
		pr_info("pwr_reg_name = %s\n", name);
	}

	retval = of_property_read_string(np, "st,regulator_avdd", &name);
	if (retval == -EINVAL)
		bdata->avdd_reg_name = NULL;
	else if (retval < 0)
		return retval;
	else {
		bdata->avdd_reg_name = name;
		pr_info("bus_reg_name = %s\n", name);
	}

	if (of_property_read_bool(np, "st,reset-gpio")) {
		bdata->reset_gpio = of_get_named_gpio_flags(np,
							    "st,reset-gpio", 0,
							    NULL);
		pr_info("reset_gpio =%d\n", bdata->reset_gpio);
	} else
		bdata->reset_gpio = GPIO_NOT_DEFINED;

	retval = of_property_read_string(np, "st,firmware_name", &name);
	if (retval == -EINVAL)
		bdata->fw_name = PATH_FILE_FW;
	else if (retval >= 0)
		bdata->fw_name = name;
	pr_info("firmware name = %s\n", bdata->fw_name);

	if (of_property_read_u32_array(np, "st,max-coords", coords, 2)) {
		pr_err("st,max-coords not found, using 1440x2560\n");
		coords[0] = 1440;
		coords[1] = 2560;
	}
	bdata->x_axis_max = coords[0];
	bdata->y_axis_max = coords[1];

	return OK;
}

/**
  * Probe function, called when the driver it is matched with a device
  * with the same name compatible name
  * This function allocate, initialize all the most important functions and flow
  * those are used by the driver to operate with the IC.
  * It allocates device variables, initialize queues and schedule works,
  * registers the IRQ handler, suspend/resume callbacks, registers the device
  * to the linux input subsystem etc.
  */
#ifdef I2C_INTERFACE
static int fts_probe(struct i2c_client *client, const struct i2c_device_id *idp)
{
#else
static int fts_probe(struct spi_device *client)
{
#endif

	struct fts_ts_info *info = NULL;
	int error = 0;
	struct device_node *dp = client->dev.of_node;
	int retval;
	int skip_5_1 = 0;
	u16 bus_type;

	pr_info("%s: driver probe begin!\n", __func__);
	pr_info("driver ver. %s\n", FTS_TS_DRV_VERSION);

	pr_info("SET Bus Functionality :\n");
#ifdef I2C_INTERFACE
	pr_info("I2C interface...\n");
	if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
		pr_err("Unsupported I2C functionality\n");
		error = -EIO;
		goto ProbeErrorExit_0;
	}

	pr_info("i2c address: %x\n", client->addr);
	bus_type = BUS_I2C;
#else
	pr_info("SPI interface...\n");
	client->mode = SPI_MODE_0;
#ifndef SPI4_WIRE
	client->mode |= SPI_3WIRE;
#endif

	client->max_speed_hz = SPI_CLOCK_FREQ;
	client->bits_per_word = 8;
	if (spi_setup(client) < 0) {
		pr_err("Unsupported SPI functionality\n");
		error = -EIO;
		goto ProbeErrorExit_0;
	}
	bus_type = BUS_SPI;
#endif


	pr_info("SET Device driver INFO:\n");


	info = kzalloc(sizeof(struct fts_ts_info), GFP_KERNEL);
	if (!info) {
		pr_err("Out of memory... Impossible to allocate struct info!\n");
		error = -ENOMEM;
		goto ProbeErrorExit_0;
	}

	info->client = client;
	info->dev = &info->client->dev;

	dev_set_drvdata(info->dev, info);

#ifdef CONFIG_TOUCHSCREEN_TBN
	info->tbn = tbn_init(info->dev);
	if (!info->tbn) {
		pr_err("ERROR: failed to init tbn context\n");
		error = -ENODEV;
		goto ProbeErrorExit_1;
	}
#endif

	if (dp) {
		info->board = devm_kzalloc(&client->dev,
					   sizeof(struct fts_hw_platform_data),
					   GFP_KERNEL);
		if (!info->board) {
			pr_err("ERROR:info.board kzalloc failed\n");
			goto ProbeErrorExit_1;
		}
		parse_dt(&client->dev, info->board);
	}

	pr_info("SET Regulators:\n");
	retval = fts_get_reg(info, true);
	if (retval < 0) {
		pr_err("ERROR: %s: Failed to get regulators\n", __func__);
		goto ProbeErrorExit_1;
	}

	retval = fts_enable_reg(info, true);
	if (retval < 0) {
		pr_err("%s: ERROR Failed to enable regulators\n", __func__);
		goto ProbeErrorExit_2;
	}

	pr_info("SET GPIOS:\n");
	retval = fts_set_gpio(info);
	if (retval < 0) {
		pr_err("%s: ERROR Failed to set up GPIO's\n", __func__);
		goto ProbeErrorExit_2;
	}
	info->client->irq = gpio_to_irq(info->board->irq_gpio);

	pr_info("SET Event Handler:\n");

	wakeup_source_init(&info->wakesrc, "fts_tp");
	info->event_wq = alloc_workqueue("fts-event-queue", WQ_UNBOUND |
					 WQ_HIGHPRI | WQ_CPU_INTENSIVE, 1);
	if (!info->event_wq) {
		pr_err("ERROR: Cannot create work thread\n");
		error = -ENOMEM;
		goto ProbeErrorExit_4;
	}

	INIT_WORK(&info->resume_work, fts_resume_work);
	INIT_WORK(&info->suspend_work, fts_suspend_work);

	init_completion(&info->bus_resumed);
	complete_all(&info->bus_resumed);

	pr_info("SET Input Device Property:\n");
	info->dev = &info->client->dev;
	info->input_dev = input_allocate_device();
	if (!info->input_dev) {
		pr_err("ERROR: No such input device defined!\n");
		error = -ENODEV;
		goto ProbeErrorExit_5;
	}
	info->input_dev->dev.parent = &client->dev;
	info->input_dev->name = FTS_TS_DRV_NAME;
	scnprintf(fts_ts_phys, sizeof(fts_ts_phys), "%s/input0",
		 info->input_dev->name);
	info->input_dev->phys = fts_ts_phys;
	info->input_dev->id.bustype = bus_type;
	info->input_dev->id.vendor = 0x0001;
	info->input_dev->id.product = 0x0002;
	info->input_dev->id.version = 0x0100;

	__set_bit(EV_SYN, info->input_dev->evbit);
	__set_bit(EV_KEY, info->input_dev->evbit);
	__set_bit(EV_ABS, info->input_dev->evbit);
	__set_bit(BTN_TOUCH, info->input_dev->keybit);
	/* __set_bit(BTN_TOOL_FINGER, info->input_dev->keybit); */
	/* __set_bit(BTN_TOOL_PEN, info->input_dev->keybit); */

	input_mt_init_slots(info->input_dev, TOUCH_ID_MAX, INPUT_MT_DIRECT);

	/* input_mt_init_slots(info->input_dev, TOUCH_ID_MAX); */

	input_set_abs_params(info->input_dev, ABS_MT_POSITION_X, X_AXIS_MIN,
			     info->board->x_axis_max, 0, 0);
	input_set_abs_params(info->input_dev, ABS_MT_POSITION_Y, Y_AXIS_MIN,
			     info->board->y_axis_max, 0, 0);
	input_set_abs_params(info->input_dev, ABS_MT_TOUCH_MAJOR, AREA_MIN,
			     AREA_MAX, 0, 0);
	input_set_abs_params(info->input_dev, ABS_MT_TOUCH_MINOR, AREA_MIN,
			     AREA_MAX, 0, 0);
	input_set_abs_params(info->input_dev, ABS_MT_PRESSURE, PRESSURE_MIN,
		PRESSURE_MAX, 0, 0);
#ifndef SKIP_DISTANCE
	input_set_abs_params(info->input_dev, ABS_MT_DISTANCE, DISTANCE_MIN,
			     DISTANCE_MAX, 0, 0);
#endif

#ifdef GESTURE_MODE
	input_set_capability(info->input_dev, EV_KEY, KEY_WAKEUP);

	input_set_capability(info->input_dev, EV_KEY, KEY_M);
	input_set_capability(info->input_dev, EV_KEY, KEY_O);
	input_set_capability(info->input_dev, EV_KEY, KEY_E);
	input_set_capability(info->input_dev, EV_KEY, KEY_W);
	input_set_capability(info->input_dev, EV_KEY, KEY_C);
	input_set_capability(info->input_dev, EV_KEY, KEY_L);
	input_set_capability(info->input_dev, EV_KEY, KEY_F);
	input_set_capability(info->input_dev, EV_KEY, KEY_V);
	input_set_capability(info->input_dev, EV_KEY, KEY_S);
	input_set_capability(info->input_dev, EV_KEY, KEY_Z);
	input_set_capability(info->input_dev, EV_KEY, KEY_WWW);

	input_set_capability(info->input_dev, EV_KEY, KEY_LEFT);
	input_set_capability(info->input_dev, EV_KEY, KEY_RIGHT);
	input_set_capability(info->input_dev, EV_KEY, KEY_UP);
	input_set_capability(info->input_dev, EV_KEY, KEY_DOWN);

	input_set_capability(info->input_dev, EV_KEY, KEY_F1);
	input_set_capability(info->input_dev, EV_KEY, KEY_F2);
	input_set_capability(info->input_dev, EV_KEY, KEY_F3);
	input_set_capability(info->input_dev, EV_KEY, KEY_F4);
	input_set_capability(info->input_dev, EV_KEY, KEY_F5);

	input_set_capability(info->input_dev, EV_KEY, KEY_LEFTBRACE);
	input_set_capability(info->input_dev, EV_KEY, KEY_RIGHTBRACE);
#endif

#ifdef PHONE_KEY
	/* KEY associated to the touch screen buttons */
	input_set_capability(info->input_dev, EV_KEY, KEY_HOMEPAGE);
	input_set_capability(info->input_dev, EV_KEY, KEY_BACK);
	input_set_capability(info->input_dev, EV_KEY, KEY_MENU);
#endif

	mutex_init(&info->diag_cmd_lock);

	mutex_init(&(info->input_report_mutex));
	mutex_init(&info->bus_mutex);

	/* Assume screen is on throughout probe */
	info->bus_refmask = FTS_BUS_REF_SCREEN_ON;

#ifdef GESTURE_MODE
	mutex_init(&gestureMask_mutex);
#endif

	spin_lock_init(&fts_int);

	/* register the multi-touch input device */
	error = input_register_device(info->input_dev);
	if (error) {
		pr_err("ERROR: No such input device\n");
		error = -ENODEV;
		goto ProbeErrorExit_5_1;
	}

	skip_5_1 = 1;
	/* track slots */
	info->touch_id = 0;
#ifdef STYLUS_MODE
	info->stylus_id = 0;
#endif


	/* init feature switches (by default all the features are disable,
	  * if one feature want to be enabled from the start,
	  * set the corresponding value to 1)*/
	info->gesture_enabled = 0;
	info->glove_enabled = 0;
	info->charger_enabled = 0;
	info->cover_enabled = 0;
	info->grip_enabled = 0;

	info->resume_bit = 1;
	info->notifier = fts_noti_block;

	/*
	 * This *must* be done before request_threaded_irq is called.
	 * Otherwise, if an interrupt is received before request is added,
	 * but after the interrupt has been subscribed to, pm_qos_req
	 * may be accessed before initialization in the interrupt handler.
	 */
	pm_qos_add_request(&info->pm_qos_req, PM_QOS_CPU_DMA_LATENCY,
			PM_QOS_DEFAULT_VALUE);

	pr_info("Init Core Lib:\n");
	initCore(info);
	/* init hardware device */
	pr_info("Device Initialization:\n");
	error = fts_init(info);
	if (error < OK) {
		pr_err("Cannot initialize the device ERROR %08X\n", error);
		error = -ENODEV;
		goto ProbeErrorExit_6;
	}

	/*
	 * Heatmap_probe must be called before irq routine is registered,
	 * because heatmap_read is called from interrupt context.
	 * This is done as part of fwu_work.
	 * At the same time, heatmap_probe must be done after fts_init(..) has
	 * completed, because getForceLen() and getSenseLen() require
	 * the chip to be initialized.
	 */
	info->v4l2.parent_dev = info->dev;
	info->v4l2.input_dev = info->input_dev;
	info->v4l2.read_frame = read_heatmap_raw;
	info->v4l2.width = getForceLen();
	info->v4l2.height = getSenseLen();
	/* 120 Hz operation */
	info->v4l2.timeperframe.numerator = 1;
	info->v4l2.timeperframe.denominator = 120;
	error = heatmap_probe(&info->v4l2);
	if (error < OK)
		goto ProbeErrorExit_6;

#if defined(FW_UPDATE_ON_PROBE) && defined(FW_H_FILE)
	pr_info("FW Update and Sensing Initialization:\n");
	error = fts_fw_update(info);
	if (error < OK) {
		pr_err("Cannot execute fw upgrade the device ERROR %08X\n",
			error);
		error = -ENODEV;
		goto ProbeErrorExit_7;
	}

#else
	pr_info("SET Auto Fw Update:\n");
	info->fwu_workqueue = alloc_workqueue("fts-fwu-queue", WQ_UNBOUND |
					      WQ_HIGHPRI | WQ_CPU_INTENSIVE, 1);
	if (!info->fwu_workqueue) {
		pr_err("ERROR: Cannot create fwu work thread\n");
		goto ProbeErrorExit_7;
	}
	INIT_DELAYED_WORK(&info->fwu_work, fts_fw_update_auto);
#endif

	pr_info("SET Device File Nodes:\n");
	/* sysfs stuff */
	info->attrs.attrs = fts_attr_group;
	error = sysfs_create_group(&client->dev.kobj, &info->attrs);
	if (error) {
		pr_err("ERROR: Cannot create sysfs structure!\n");
		error = -ENODEV;
		goto ProbeErrorExit_7;
	}

	error = fts_proc_init();
	if (error < OK)
		pr_err("Error: can not create /proc file!\n");

#ifndef FW_UPDATE_ON_PROBE
	queue_delayed_work(info->fwu_workqueue, &info->fwu_work,
			   msecs_to_jiffies(EXP_FN_WORK_DELAY_MS));
#endif

	info->touchsim.wq = alloc_workqueue("fts-heatmap_test-queue",
					WQ_UNBOUND | WQ_HIGHPRI |
					WQ_CPU_INTENSIVE, 1);

	if (info->touchsim.wq)
		INIT_WORK(&(info->touchsim.work), touchsim_work);
	else
		pr_err("ERROR: Cannot create touch sim. test work queue\n");

	pr_info("Probe Finished!\n");

	return OK;


ProbeErrorExit_7:
	if(info->touchsim.wq)
		destroy_workqueue(info->touchsim.wq);

#ifdef FW_UPDATE_ON_PROBE
	msm_drm_unregister_client(&info->notifier);
#endif

	heatmap_remove(&info->v4l2);

ProbeErrorExit_6:
	pm_qos_remove_request(&info->pm_qos_req);
	input_unregister_device(info->input_dev);

ProbeErrorExit_5_1:
	if (skip_5_1 != 1)
		input_free_device(info->input_dev);

ProbeErrorExit_5:
	destroy_workqueue(info->event_wq);

ProbeErrorExit_4:
	/* destroy_workqueue(info->fwu_workqueue); */
	wakeup_source_trash(&info->wakesrc);

	fts_enable_reg(info, false);

ProbeErrorExit_2:
	fts_get_reg(info, false);

ProbeErrorExit_1:
	kfree(info);

ProbeErrorExit_0:
	pr_err("Probe Failed!\n");

	return error;
}


/**
  * Clear and free all the resources associated to the driver.
  * This function is called when the driver need to be removed.
  */
#ifdef I2C_INTERFACE
static int fts_remove(struct i2c_client *client)
{
#else
static int fts_remove(struct spi_device *client)
{
#endif

	struct fts_ts_info *info = dev_get_drvdata(&(client->dev));

	/* Force the bus active throughout removal of the client */
	fts_set_bus_ref(info, FTS_BUS_REF_FORCE_ACTIVE, true);

	pr_info("%s\n", __func__);

#ifdef CONFIG_TOUCHSCREEN_TBN
	tbn_cleanup(info->tbn);
#endif

	fts_proc_remove();

	/* sysfs stuff */
	sysfs_remove_group(&client->dev.kobj, &info->attrs);

	/* remove interrupt and event handlers */
	fts_interrupt_uninstall(info);

	heatmap_remove(&info->v4l2);

	pm_qos_remove_request(&info->pm_qos_req);

	msm_drm_unregister_client(&info->notifier);

	/* unregister the device */
	input_unregister_device(info->input_dev);

	/* input_free_device(info->input_dev ); */

	/* Remove the work thread */
	destroy_workqueue(info->event_wq);
	wakeup_source_trash(&info->wakesrc);

	if(info->touchsim.wq)
		destroy_workqueue(info->touchsim.wq);

#ifndef FW_UPDATE_ON_PROBE
	destroy_workqueue(info->fwu_workqueue);
#endif

	fts_enable_reg(info, false);
	fts_get_reg(info, false);

	/* free gpio */
	if (gpio_is_valid(info->board->irq_gpio))
		gpio_free(info->board->irq_gpio);
	if (gpio_is_valid(info->board->switch_gpio))
		gpio_free(info->board->switch_gpio);
	if (gpio_is_valid(info->board->reset_gpio))
		gpio_free(info->board->reset_gpio);

	/* free all */
	kfree(info);

	return OK;
}

/**
  * Struct which contains the compatible names that need to match with
  * the definition of the device in the device tree node
  */
static struct of_device_id fts_of_match_table[] = {
	{
		.compatible = "st,fts",
	},
	{},
};

#ifdef I2C_INTERFACE
static const struct i2c_device_id fts_device_id[] = {
	{ FTS_TS_DRV_NAME, 0 },
	{}
};

static struct i2c_driver fts_i2c_driver = {
	.driver			= {
		.name		= FTS_TS_DRV_NAME,
		.of_match_table = fts_of_match_table,
	},
	.probe			= fts_probe,
	.remove			= fts_remove,
	.id_table		= fts_device_id,
};
#else
static struct spi_driver fts_spi_driver = {
	.driver			= {
		.name		= FTS_TS_DRV_NAME,
		.of_match_table = fts_of_match_table,
		.owner		= THIS_MODULE,
	},
	.probe			= fts_probe,
	.remove			= fts_remove,
};
#endif


static int __init fts_driver_init(void)
{
#ifdef I2C_INTERFACE
	return i2c_add_driver(&fts_i2c_driver);
#else
	return spi_register_driver(&fts_spi_driver);
#endif
}

static void __exit fts_driver_exit(void)
{
	pr_info("%s\n", __func__);
#ifdef I2C_INTERFACE
	i2c_del_driver(&fts_i2c_driver);
#else
	spi_unregister_driver(&fts_spi_driver);
#endif
}


MODULE_DESCRIPTION("STMicroelectronics MultiTouch IC Driver");
MODULE_AUTHOR("STMicroelectronics");
MODULE_LICENSE("GPL");

late_initcall(fts_driver_init);
module_exit(fts_driver_exit);