PMIC: Add TSI/misc input Driver for Dialog DA9052

Add DA9052 TSI/misc input driver from Dialog.
Modify Kconfig/Makefile for DA9052 TSI/misc input driver.

Signed-off-by: Zhou Jingyu <Jingyu.Zhou@freescale.com>
Acked-by: Lily Zhang <r58066@freescale.com>
Signed-off-by: Ying-Chun Liu (PaulLiu) <paul.liu@linaro.org>

8 files changed, 2195 insertions, 0 deletions

diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig
index c9104bb4db0..88238d02a5b 100644
--- a/drivers/input/misc/Kconfig
+++ b/drivers/input/misc/Kconfig
@@ -527,4 +527,14 @@ config INPUT_XEN_KBDDEV_FRONTEND
 	  To compile this driver as a module, choose M here: the
 	  module will be called xen-kbdfront.
 
+config INPUT_DA9052_ONKEY
+	tristate "Dialog DA9052 Onkey"
+	depends on PMIC_DIALOG
+	help
+	  Support the ONKEY of Dialog DA9052 PMICs as an input device
+	  reporting power button status.
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called da9052_onkey.
+
 endif
diff --git a/drivers/input/misc/Makefile b/drivers/input/misc/Makefile
index 299ad5edba8..cd319cfb375 100644
--- a/drivers/input/misc/Makefile
+++ b/drivers/input/misc/Makefile
@@ -49,3 +49,4 @@ obj-$(CONFIG_INPUT_WISTRON_BTNS)	+= wistron_btns.o
 obj-$(CONFIG_INPUT_WM831X_ON)		+= wm831x-on.o
 obj-$(CONFIG_INPUT_XEN_KBDDEV_FRONTEND)	+= xen-kbdfront.o
 obj-$(CONFIG_INPUT_YEALINK)		+= yealink.o
+obj-$(CONFIG_INPUT_DA9052_ONKEY)	+= da9052_onkey.o
diff --git a/drivers/input/misc/da9052_onkey.c b/drivers/input/misc/da9052_onkey.c
new file mode 100644
index 00000000000..295b2005cbe
--- /dev/null
+++ b/drivers/input/misc/da9052_onkey.c
@@ -0,0 +1,133 @@
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/input.h>
+#include <linux/platform_device.h>
+
+#include <linux/mfd/da9052/da9052.h>
+#include <linux/mfd/da9052/reg.h>
+
+#define DRIVER_NAME "da9052-onkey"
+
+struct da9052_onkey_data {
+	struct da9052 *da9052;
+	struct da9052_eh_nb eh_data;
+	struct input_dev *input;
+};
+
+static void da9052_onkey_report_event(struct da9052_eh_nb *eh_data,
+				unsigned int event)
+{
+	struct da9052_onkey_data *da9052_onkey =
+		container_of(eh_data, struct da9052_onkey_data, eh_data);
+	struct da9052_ssc_msg msg;
+	unsigned int ret;
+
+	/* Read the Evnet Register */
+	msg.addr = DA9052_EVENTB_REG;
+	da9052_lock(da9052_onkey->da9052);
+	ret = da9052_onkey->da9052->read(da9052_onkey->da9052, &msg);
+	if (ret) {
+		da9052_unlock(da9052_onkey->da9052);
+		return;
+	}
+	da9052_unlock(da9052_onkey->da9052);
+	msg.data = msg.data & DA9052_EVENTB_ENONKEY;
+
+	input_report_key(da9052_onkey->input, KEY_POWER, msg.data);
+	input_sync(da9052_onkey->input);
+	printk(KERN_INFO "DA9052 ONKEY EVENT REPORTED\n");
+}
+
+static int __devinit da9052_onkey_probe(struct platform_device *pdev)
+{
+	struct da9052_onkey_data *da9052_onkey;
+	int error;
+
+	da9052_onkey = kzalloc(sizeof(*da9052_onkey), GFP_KERNEL);
+	da9052_onkey->input = input_allocate_device();
+	if (!da9052_onkey->input) {
+		dev_err(&pdev->dev, "failed to allocate data device\n");
+		error = -ENOMEM;
+		goto fail1;
+	}
+	da9052_onkey->da9052 = dev_get_drvdata(pdev->dev.parent);
+
+	if (!da9052_onkey->input) {
+		dev_err(&pdev->dev, "failed to allocate input device\n");
+		error = -ENOMEM;
+		goto fail2;
+	}
+
+	da9052_onkey->input->evbit[0] = BIT_MASK(EV_KEY);
+	da9052_onkey->input->keybit[BIT_WORD(KEY_POWER)] = BIT_MASK(KEY_POWER);
+	da9052_onkey->input->name = "da9052-onkey";
+	da9052_onkey->input->phys = "da9052-onkey/input0";
+	da9052_onkey->input->dev.parent = &pdev->dev;
+
+	/* Set the EH structure */
+	da9052_onkey->eh_data.eve_type = ONKEY_EVE;
+	da9052_onkey->eh_data.call_back = &da9052_onkey_report_event;
+	error = da9052_onkey->da9052->register_event_notifier(
+				da9052_onkey->da9052,
+				&da9052_onkey->eh_data);
+	if (error)
+		goto fail2;
+
+	error = input_register_device(da9052_onkey->input);
+	if (error) {
+		dev_err(&pdev->dev, "Unable to register input "
+				"device,error: %d\n", error);
+		goto fail3;
+	}
+
+	platform_set_drvdata(pdev, da9052_onkey);
+
+	return 0;
+
+fail3:
+	da9052_onkey->da9052->unregister_event_notifier(da9052_onkey->da9052,
+					&da9052_onkey->eh_data);
+fail2:
+	input_free_device(da9052_onkey->input);
+fail1:
+	kfree(da9052_onkey);
+	return error;
+}
+
+static int __devexit da9052_onkey_remove(struct platform_device *pdev)
+{
+	struct da9052_onkey_data *da9052_onkey = pdev->dev.platform_data;
+	da9052_onkey->da9052->unregister_event_notifier(da9052_onkey->da9052,
+					&da9052_onkey->eh_data);
+	input_unregister_device(da9052_onkey->input);
+	kfree(da9052_onkey);
+
+	return 0;
+}
+
+static struct platform_driver da9052_onkey_driver = {
+	.probe		= da9052_onkey_probe,
+	.remove		= __devexit_p(da9052_onkey_remove),
+	.driver		= {
+		.name	= "da9052-onkey",
+		.owner	= THIS_MODULE,
+	}
+};
+
+static int __init da9052_onkey_init(void)
+{
+	return platform_driver_register(&da9052_onkey_driver);
+}
+
+static void __exit da9052_onkey_exit(void)
+{
+	platform_driver_unregister(&da9052_onkey_driver);
+}
+
+module_init(da9052_onkey_init);
+module_exit(da9052_onkey_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("David Dajun Chen <dchen@diasemi.com>");
+MODULE_DESCRIPTION("Onkey driver for DA9052");
+MODULE_ALIAS("platform:" DRIVER_NAME);
diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig
index cabd9e54863..fd4366d6ada 100644
--- a/drivers/input/touchscreen/Kconfig
+++ b/drivers/input/touchscreen/Kconfig
@@ -726,4 +726,11 @@ config TOUCHSCREEN_TPS6507X
 	  To compile this driver as a module, choose M here: the
 	  module will be called tps6507x_ts.
 
+config TOUCHSCREEN_DA9052
+        tristate "Dialog DA9052 TSI"
+        depends on PMIC_DIALOG
+        help
+          Say y here to support the touchscreen found on
+          Dialog Semiconductor DA9052 PMIC
+
 endif
diff --git a/drivers/input/touchscreen/Makefile b/drivers/input/touchscreen/Makefile
index 282d6f76ae2..06471951723 100644
--- a/drivers/input/touchscreen/Makefile
+++ b/drivers/input/touchscreen/Makefile
@@ -6,6 +6,8 @@
 
 wm97xx-ts-y := wm97xx-core.o
 
+da9052-tsi-objs				:= da9052_tsi.o da9052_tsi_filter.o da9052_tsi_calibrate.o
+obj-$(CONFIG_TOUCHSCREEN_DA9052)      	 += da9052-tsi.o
 obj-$(CONFIG_TOUCHSCREEN_88PM860X)	+= 88pm860x-ts.o
 obj-$(CONFIG_TOUCHSCREEN_AD7877)	+= ad7877.o
 obj-$(CONFIG_TOUCHSCREEN_AD7879)	+= ad7879.o
diff --git a/drivers/input/touchscreen/da9052_tsi.c b/drivers/input/touchscreen/da9052_tsi.c
new file mode 100644
index 00000000000..fa250ab1bf9
--- /dev/null
+++ b/drivers/input/touchscreen/da9052_tsi.c
@@ -0,0 +1,1446 @@
+/*
+ * da9052_tsi.c  --  TSI driver for Dialog DA9052
+ *
+ * Copyright(c) 2009 Dialog Semiconductor Ltd.
+ *
+ * Author: Dialog Semiconductor Ltd <dchen@diasemi.com>
+ *
+ *  This program is free software; you can redistribute  it and/or modify it
+ *  under  the terms of  the GNU General  Public License as published by the
+ *  Free Software Foundation;  either version 2 of the  License, or (at your
+ *  option) any later version.
+ *
+ */
+#include <linux/module.h>
+#include <linux/input.h>
+#include <linux/delay.h>
+#include <linux/platform_device.h>
+#include <linux/uaccess.h>
+#include <linux/freezer.h>
+#include <linux/kthread.h>
+
+#include <linux/mfd/da9052/reg.h>
+#include <linux/mfd/da9052/tsi_cfg.h>
+#include <linux/mfd/da9052/tsi.h>
+#include <linux/mfd/da9052/gpio.h>
+#include <linux/mfd/da9052/adc.h>
+
+#define WAIT_FOR_PEN_DOWN	0
+#define WAIT_FOR_SAMPLING	1
+#define SAMPLING_ACTIVE		2
+
+static ssize_t __init da9052_tsi_create_input_dev(struct input_dev **ip_dev,
+					u8 n);
+static ssize_t read_da9052_reg(struct da9052 *da9052, u8 reg_addr);
+static ssize_t write_da9052_reg(struct da9052 *da9052, u8 reg_addr, u8 data);
+
+static void da9052_tsi_reg_pendwn_event(struct da9052_ts_priv *priv);
+static void da9052_tsi_reg_datardy_event(struct da9052_ts_priv *priv);
+static ssize_t da9052_tsi_config_delay(struct da9052_ts_priv *priv,
+					enum TSI_DELAY delay);
+static ssize_t da9052_tsi_config_measure_seq(struct da9052_ts_priv *priv,
+					enum TSI_MEASURE_SEQ seq);
+static ssize_t da9052_tsi_config_state(struct da9052_ts_priv *ts,
+					enum TSI_STATE state);
+static ssize_t da9052_tsi_set_sampling_mode(struct da9052_ts_priv *priv,
+					u8 interval);
+static ssize_t da9052_tsi_config_skip_slots(struct da9052_ts_priv *priv,
+					enum TSI_SLOT_SKIP skip);
+static ssize_t da9052_tsi_config_pen_detect(struct da9052_ts_priv *priv,
+					u8 flag);
+static ssize_t da9052_tsi_disable_irq(struct da9052_ts_priv *priv,
+					enum TSI_IRQ tsi_irq);
+static ssize_t da9052_tsi_enable_irq(struct da9052_ts_priv *priv,
+					enum TSI_IRQ tsi_irq);
+static ssize_t da9052_tsi_config_manual_mode(struct da9052_ts_priv *priv,
+					u8 coordinate);
+static ssize_t da9052_tsi_config_auto_mode(struct da9052_ts_priv *priv,
+					u8 state);
+static ssize_t da9052_tsi_config_gpio(struct da9052_ts_priv *priv);
+static ssize_t da9052_tsi_config_power_supply(struct da9052_ts_priv *priv,
+					u8 state);
+static struct da9052_tsi_info *get_tsi_drvdata(void);
+static void da9052_tsi_penup_event(struct da9052_ts_priv *priv);
+static s32 da9052_tsi_get_rawdata(struct da9052_tsi_reg *buf, u8 cnt);
+static ssize_t da9052_tsi_reg_proc_thread(void *ptr);
+static ssize_t da9052_tsi_resume(struct platform_device *dev);
+static ssize_t da9052_tsi_suspend(struct platform_device *dev,
+					pm_message_t state);
+struct da9052_tsi tsi_reg;
+struct da9052_tsi_info gda9052_tsi_info;
+
+static ssize_t write_da9052_reg(struct da9052 *da9052, u8 reg_addr, u8 data)
+{
+	ssize_t ret = 0;
+	struct da9052_ssc_msg ssc_msg;
+
+	ssc_msg.addr =  reg_addr;
+	ssc_msg.data =  data;
+	ret = da9052->write(da9052, &ssc_msg);
+	if (ret) {
+		DA9052_DEBUG("%s: ", __func__);
+		DA9052_DEBUG("da9052_ssc_write Failed %d\n", ret);
+	}
+
+	return ret;
+}
+
+static ssize_t read_da9052_reg(struct da9052 *da9052, u8 reg_addr)
+{
+	 ssize_t ret = 0;
+	 struct da9052_ssc_msg ssc_msg;
+
+	ssc_msg.addr =  reg_addr;
+	ssc_msg.data =  0;
+	ret = da9052->read(da9052, &ssc_msg);
+	if (ret) {
+		DA9052_DEBUG("%s: ", __func__);
+		DA9052_DEBUG("da9052_ssc_read Failed => %d\n", ret);
+		return -ret;
+	}
+	return ssc_msg.data;
+}
+
+static struct da9052_tsi_info *get_tsi_drvdata(void)
+{
+	return &gda9052_tsi_info;
+}
+
+static ssize_t da9052_tsi_config_measure_seq(struct da9052_ts_priv *priv,
+						enum TSI_MEASURE_SEQ seq)
+{
+	ssize_t ret = 0;
+	u8 data = 0;
+	struct da9052_tsi_info *ts = get_tsi_drvdata();
+
+	if (seq > 1)
+		return -EINVAL;
+
+	da9052_lock(priv->da9052);
+	ret = read_da9052_reg(priv->da9052, DA9052_TSICONTA_REG);
+	if (ret < 0) {
+		DA9052_DEBUG("DA9052_TSI: %s:", __func__);
+		DA9052_DEBUG("read_da9052_reg Failed\n");
+		da9052_unlock(priv->da9052);
+		return ret;
+	}
+
+	data = (u8)ret;
+
+	if (seq == XYZP_MODE)
+		data = enable_xyzp_mode(data);
+	else if (seq == XP_MODE)
+		data = enable_xp_mode(data);
+	else {
+		DA9052_DEBUG("DA9052_TSI: %s:", __func__);
+		DA9052_DEBUG("Invalid Value passed\n");
+		da9052_unlock(priv->da9052);
+		return -EINVAL;
+	}
+
+	ret = write_da9052_reg(priv->da9052, DA9052_TSICONTA_REG, data);
+	if (ret) {
+		DA9052_DEBUG("DA9052_TSI: %s:", __func__);
+		DA9052_DEBUG(" write_da9052_reg Failed\n");
+		da9052_unlock(priv->da9052);
+		return ret;
+	}
+	da9052_unlock(priv->da9052);
+
+	ts->tsi_conf.auto_cont.da9052_tsi_cont_a = data;
+
+	return 0;
+}
+
+static ssize_t da9052_tsi_set_sampling_mode(struct da9052_ts_priv *priv,
+					u8 mode)
+{
+	u8 data = 0;
+	ssize_t ret = 0;
+	struct da9052_tsi_info *ts = get_tsi_drvdata();
+
+	da9052_lock(priv->da9052);
+
+	ret = read_da9052_reg(priv->da9052, DA9052_ADCCONT_REG);
+	if (ret < 0) {
+		DA9052_DEBUG("DA9052_TSI:%s:", __func__);
+		DA9052_DEBUG("read_da9052_reg Failed\n");
+		da9052_unlock(priv->da9052);
+		return ret;
+	}
+	data = (u8)ret;
+
+	if (mode == ECONOMY_MODE)
+		data = adc_mode_economy_mode(data);
+	else if (mode == FAST_MODE)
+		data = adc_mode_fast_mode(data);
+	else {
+		DA9052_DEBUG("DA9052_TSI:%s:", __func__);
+		DA9052_DEBUG("Invalid interval passed\n");
+		da9052_unlock(priv->da9052);
+		return -EINVAL;
+	}
+
+	ret = write_da9052_reg(priv->da9052, DA9052_ADCCONT_REG, data);
+	if (ret) {
+		DA9052_DEBUG("DA9052_TSI:%s:", __func__);
+		DA9052_DEBUG("write_da9052_reg Failed\n");
+		da9052_unlock(priv->da9052);
+		return ret;
+	}
+	da9052_unlock(priv->da9052);
+
+	switch (mode) {
+	case ECONOMY_MODE:
+		priv->tsi_reg_data_poll_interval =
+			TSI_ECO_MODE_REG_DATA_PROCESSING_INTERVAL;
+		priv->tsi_raw_data_poll_interval =
+			TSI_ECO_MODE_RAW_DATA_PROCESSING_INTERVAL;
+		break;
+	case FAST_MODE:
+		priv->tsi_reg_data_poll_interval =
+			TSI_FAST_MODE_REG_DATA_PROCESSING_INTERVAL;
+		priv->tsi_raw_data_poll_interval =
+			TSI_FAST_MODE_RAW_DATA_PROCESSING_INTERVAL;
+		break;
+	default:
+		DA9052_DEBUG("DA9052_TSI:%s:", __func__);
+		DA9052_DEBUG("Invalid interval passed\n");
+		return -EINVAL;
+	}
+
+	ts->tsi_penup_count =
+		(u32)priv->tsi_pdata->pen_up_interval /
+		priv->tsi_reg_data_poll_interval;
+
+	return 0;
+}
+
+static ssize_t da9052_tsi_config_delay(struct da9052_ts_priv *priv,
+					enum TSI_DELAY delay)
+{
+	ssize_t ret = 0;
+	u8 data = 0;
+	struct da9052_tsi_info *ts = get_tsi_drvdata();
+
+	if (delay > priv->tsi_pdata->max_tsi_delay) {
+		DA9052_DEBUG("DA9052_TSI: %s:", __func__);
+		DA9052_DEBUG(" invalid value for tsi delay!!!\n");
+		return -EINVAL;
+	}
+
+	da9052_lock(priv->da9052);
+
+	ret = read_da9052_reg(priv->da9052, DA9052_TSICONTA_REG);
+	if (ret < 0) {
+		DA9052_DEBUG("DA9052_TSI: %s:", __func__);
+		DA9052_DEBUG("read_da9052_reg Failed\n");
+		da9052_unlock(priv->da9052);
+		return ret;
+	}
+
+	data = clear_bits((u8)ret, DA9052_TSICONTA_TSIDELAY);
+
+	data = set_bits(data, (delay << priv->tsi_pdata->tsi_delay_bit_shift));
+
+	ret = write_da9052_reg(priv->da9052, DA9052_TSICONTA_REG, data);
+	if (ret) {
+		DA9052_DEBUG("DA9052_TSI: %s:", __func__);
+		DA9052_DEBUG(" write_da9052_reg Failed\n");
+		da9052_unlock(priv->da9052);
+		return ret;
+	}
+	da9052_unlock(priv->da9052);
+
+	ts->tsi_conf.auto_cont.da9052_tsi_cont_a = data;
+
+	return 0;
+}
+
+ssize_t da9052_tsi_config_skip_slots(struct da9052_ts_priv *priv,
+					enum TSI_SLOT_SKIP skip)
+{
+	ssize_t ret = 0;
+	u8 data = 0;
+	struct da9052_tsi_info *ts = get_tsi_drvdata();
+
+	if (skip > priv->tsi_pdata->max_tsi_skip_slot) {
+		DA9052_DEBUG("DA9052_TSI: %s:", __func__);
+		DA9052_DEBUG(" invalid value for tsi skip slots!!!\n");
+		return -EINVAL;
+	}
+
+	da9052_lock(priv->da9052);
+
+	ret = read_da9052_reg(priv->da9052, DA9052_TSICONTA_REG);
+	if (ret < 0) {
+		DA9052_DEBUG("DA9052_TSI: %s:", __func__);
+		DA9052_DEBUG("read_da9052_reg Failed\n");
+		da9052_unlock(priv->da9052);
+		return ret;
+	}
+
+	data = clear_bits((u8)ret, DA9052_TSICONTA_TSISKIP);
+
+	data = set_bits(data, (skip << priv->tsi_pdata->tsi_skip_bit_shift));
+
+	ret = write_da9052_reg(priv->da9052, DA9052_TSICONTA_REG, data);
+	if (ret) {
+		DA9052_DEBUG("DA9052_TSI:da9052_tsi_config_skip_slots:");
+		DA9052_DEBUG(" write_da9052_reg Failed\n");
+		da9052_unlock(priv->da9052);
+		return ret;
+	}
+	da9052_unlock(priv->da9052);
+
+	ts->tsi_conf.auto_cont.da9052_tsi_cont_a = data;
+
+	return 0;
+}
+
+static ssize_t da9052_tsi_config_state(struct da9052_ts_priv *priv,
+					enum TSI_STATE state)
+{
+	s32 ret;
+	struct da9052_tsi_info *ts = get_tsi_drvdata();
+
+	if (ts->tsi_conf.state == state)
+		return 0;
+
+	switch (state) {
+	case TSI_AUTO_MODE:
+		ts->tsi_zero_data_cnt = 0;
+		priv->early_data_flag = TRUE;
+		priv->debounce_over = FALSE;
+		priv->win_reference_valid = FALSE;
+
+		clean_tsi_fifos(priv);
+
+		ret = da9052_tsi_config_auto_mode(priv, DISABLE);
+		if (ret)
+			return ret;
+
+		ret = da9052_tsi_config_manual_mode(priv, DISABLE);
+		if (ret)
+			return ret;
+
+		ret = da9052_tsi_config_power_supply(priv, DISABLE);
+		if (ret)
+			return ret;
+
+		ret = da9052_tsi_enable_irq(priv, TSI_PEN_DWN);
+		if (ret)
+			return ret;
+		ts->tsi_conf.tsi_pendown_irq_mask = RESET;
+
+		ret = da9052_tsi_disable_irq(priv, TSI_DATA_RDY);
+		if (ret)
+			return ret;
+		ts->tsi_conf.tsi_ready_irq_mask	  = SET;
+
+		da9052_tsi_reg_pendwn_event(priv);
+		da9052_tsi_reg_datardy_event(priv);
+
+		ret = da9052_tsi_config_pen_detect(priv, ENABLE);
+		if (ret)
+			return ret;
+		break;
+
+	case TSI_IDLE:
+		ts->pen_dwn_event = RESET;
+
+		ret = da9052_tsi_config_pen_detect(priv, DISABLE);
+		if (ret)
+			return ret;
+
+		ret = da9052_tsi_config_auto_mode(priv, DISABLE);
+		if (ret)
+			return ret;
+
+		ret = da9052_tsi_config_manual_mode(priv, DISABLE);
+		if (ret)
+			return ret;
+
+		ret = da9052_tsi_config_power_supply(priv, DISABLE);
+		if (ret)
+			return ret;
+
+		if (ts->pd_reg_status) {
+			priv->da9052->unregister_event_notifier(priv->da9052,
+								&priv->pd_nb);
+		ts->pd_reg_status = RESET;
+		}
+		break;
+
+	default:
+		DA9052_DEBUG("DA9052_TSI: %s:", __func__);
+		DA9052_DEBUG(" Invalid state passed");
+		return -EINVAL;
+	}
+
+	ts->tsi_conf.state = state;
+
+	return 0;
+}
+
+static void da9052_tsi_reg_pendwn_event(struct da9052_ts_priv *priv)
+{
+	ssize_t ret = 0;
+	struct da9052_tsi_info  *ts = get_tsi_drvdata();
+
+	if (ts->pd_reg_status) {
+		DA9052_DEBUG("%s: Pen down ", __func__);
+		DA9052_DEBUG("Registeration is already done\n");
+		return;
+	}
+
+	priv->pd_nb.eve_type = PEN_DOWN_EVE;
+	priv->pd_nb.call_back = &da9052_tsi_pen_down_handler;
+
+	ret = priv->da9052->register_event_notifier(priv->da9052, &priv->pd_nb);
+	if (ret) {
+		DA9052_DEBUG("%s: EH Registeration", __func__);
+		DA9052_DEBUG(" Failed: ret = %d\n", ret);
+		ts->pd_reg_status = RESET;
+	} else
+		ts->pd_reg_status = SET;
+
+	priv->os_data_cnt = 0;
+	priv->raw_data_cnt = 0;
+
+	return;
+}
+
+static void da9052_tsi_reg_datardy_event(struct da9052_ts_priv *priv)
+{
+	ssize_t ret = 0;
+	struct da9052_tsi_info  *ts = get_tsi_drvdata();
+
+	if (ts->datardy_reg_status) {
+		DA9052_DEBUG("%s: Data Ready ", __func__);
+		DA9052_DEBUG("Registeration is already done\n");
+		return;
+	}
+
+	priv->datardy_nb.eve_type = TSI_READY_EVE;
+	priv->datardy_nb.call_back = &da9052_tsi_data_ready_handler;
+
+	ret = priv->da9052->register_event_notifier(priv->da9052,
+						&priv->datardy_nb);
+
+	if (ret) {
+		DA9052_DEBUG("%s: EH Registeration", __func__);
+		DA9052_DEBUG(" Failed: ret = %d\n", ret);
+		ts->datardy_reg_status = RESET;
+	} else
+		ts->datardy_reg_status = SET;
+
+	return;
+}
+
+static ssize_t __init da9052_tsi_create_input_dev(struct input_dev **ip_dev,
+							u8 n)
+{
+	u8 i;
+	s32 ret;
+	struct input_dev *dev = NULL;
+
+	if (!n)
+		return -EINVAL;
+
+	for (i = 0; i < n; i++) {
+		dev = input_allocate_device();
+		if (!dev) {
+			DA9052_DEBUG(KERN_ERR "%s:%s():memory allocation for "\
+					"inputdevice failed\n", __FILE__,
+								__func__);
+			return -ENOMEM;
+		}
+
+		ip_dev[i] = dev;
+		switch (i) {
+		case TSI_INPUT_DEVICE_OFF:
+			dev->name = DA9052_TSI_INPUT_DEV;
+			dev->phys = "input(tsi)";
+			break;
+		default:
+			break;
+		}
+	}
+	dev->id.vendor = DA9052_VENDOR_ID;
+	dev->id.product = DA9052_PRODUCT_ID;
+	dev->id.bustype = BUS_RS232;
+	dev->id.version = TSI_VERSION;
+	dev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
+	dev->evbit[0] = (BIT_MASK(EV_SYN) |
+			BIT_MASK(EV_KEY) |
+			BIT_MASK(EV_ABS));
+
+	input_set_abs_params(dev, ABS_X, 0, DA9052_DISPLAY_X_MAX, 0, 0);
+	input_set_abs_params(dev, ABS_Y, 0, DA9052_DISPLAY_Y_MAX, 0, 0);
+	input_set_abs_params(dev, ABS_PRESSURE, 0, DA9052_TOUCH_PRESSURE_MAX,
+				0, 0);
+
+	ret = input_register_device(dev);
+	if (ret) {
+		DA9052_DEBUG(KERN_ERR "%s: Could ", __func__);
+		DA9052_DEBUG("not register input device(touchscreen)!\n");
+		ret = -EIO;
+		goto fail;
+	}
+	return 0;
+
+fail:
+	for (; i-- != 0; )
+		input_free_device(ip_dev[i]);
+	return -EINVAL;
+}
+
+static ssize_t __init da9052_tsi_init_drv(struct da9052_ts_priv *priv)
+{
+	u8 cnt = 0;
+	ssize_t ret = 0;
+	struct da9052_tsi_info  *ts = get_tsi_drvdata();
+
+	if ((DA9052_GPIO_PIN_3 != DA9052_GPIO_CONFIG_TSI) ||
+		(DA9052_GPIO_PIN_4 != DA9052_GPIO_CONFIG_TSI) ||
+		(DA9052_GPIO_PIN_5 != DA9052_GPIO_CONFIG_TSI) ||
+		(DA9052_GPIO_PIN_6 != DA9052_GPIO_CONFIG_TSI) ||
+		(DA9052_GPIO_PIN_7 != DA9052_GPIO_CONFIG_TSI)) {
+		printk(KERN_ERR"DA9052_TSI: Configure DA9052 GPIO ");
+		printk(KERN_ERR"pins for TSI\n");
+		return -EINVAL;
+	}
+
+	ret = da9052_tsi_config_gpio(priv);
+
+	ret = da9052_tsi_config_state(priv, TSI_IDLE);
+	ts->tsi_conf.state = TSI_IDLE;
+
+	da9052_tsi_config_measure_seq(priv, TSI_MODE_VALUE);
+
+	da9052_tsi_config_skip_slots(priv, TSI_SLOT_SKIP_VALUE);
+
+	da9052_tsi_config_delay(priv, TSI_DELAY_VALUE);
+
+	da9052_tsi_set_sampling_mode(priv, DEFAULT_TSI_SAMPLING_MODE);
+
+	ts->tsi_calib = get_calib_config();
+
+	ret = da9052_tsi_create_input_dev(ts->input_devs, NUM_INPUT_DEVS);
+	if (ret) {
+		DA9052_DEBUG("DA9052_TSI: %s: ", __func__);
+		DA9052_DEBUG("da9052_tsi_create_input_dev Failed\n");
+		return ret;
+	}
+
+	da9052_init_tsi_fifos(priv);
+
+	init_completion(&priv->tsi_reg_proc_thread.notifier);
+	priv->tsi_reg_proc_thread.state = ACTIVE;
+	priv->tsi_reg_proc_thread.thread_task =
+		kthread_run(da9052_tsi_reg_proc_thread,
+			    priv, "da9052_tsi_reg");
+
+	init_completion(&priv->tsi_raw_proc_thread.notifier);
+	priv->tsi_raw_proc_thread.state = ACTIVE;
+	priv->tsi_raw_proc_thread.thread_task =
+		kthread_run(da9052_tsi_raw_proc_thread,
+			    priv, "da9052_tsi_raw");
+
+	ret = da9052_tsi_config_state(priv, DEFAULT_TSI_STATE);
+	if (ret) {
+		for (cnt = 0; cnt < NUM_INPUT_DEVS; cnt++) {
+			if (ts->input_devs[cnt] != NULL)
+				input_free_device(ts->input_devs[cnt]);
+		}
+	}
+
+	return 0;
+}
+
+u32 da9052_tsi_get_input_dev(u8 off)
+{
+	struct da9052_tsi_info   *ts = get_tsi_drvdata();
+
+	if (off > NUM_INPUT_DEVS-1)
+		return -EINVAL;
+
+	return (u32)ts->input_devs[off];
+}
+
+static ssize_t da9052_tsi_config_pen_detect(struct da9052_ts_priv *priv,
+						u8 flag)
+{
+	u8 data;
+	u32 ret;
+	struct da9052_tsi_info  *ts = get_tsi_drvdata();
+
+	da9052_lock(priv->da9052);
+	ret = read_da9052_reg(priv->da9052, DA9052_TSICONTA_REG);
+	if (ret < 0) {
+		DA9052_DEBUG("%s:", __func__);
+		DA9052_DEBUG(" read_da9052_reg	Failed\n");
+		da9052_unlock(priv->da9052);
+		return ret;
+	}
+
+	if (flag == ENABLE)
+		data = set_bits((u8)ret, DA9052_TSICONTA_PENDETEN);
+	else if (flag == DISABLE)
+		data = clear_bits((u8)ret, DA9052_TSICONTA_PENDETEN);
+	else {
+		DA9052_DEBUG("%s:", __func__);
+		DA9052_DEBUG(" Invalid flag passed\n");
+		da9052_unlock(priv->da9052);
+		return -EINVAL;
+	}
+
+	ret = write_da9052_reg(priv->da9052, DA9052_TSICONTA_REG, data);
+	if (ret < 0) {
+		DA9052_DEBUG("%s:", __func__);
+		DA9052_DEBUG(" write_da9052_reg	Failed\n");
+		da9052_unlock(priv->da9052);
+		return ret;
+	}
+	da9052_unlock(priv->da9052);
+
+	ts->tsi_conf.auto_cont.da9052_tsi_cont_a = data;
+	return 0;
+}
+
+static ssize_t da9052_tsi_disable_irq(struct da9052_ts_priv *priv,
+					enum TSI_IRQ tsi_irq)
+{
+	u8 data = 0;
+	ssize_t ret = 0;
+	struct da9052_tsi_info	*ts = get_tsi_drvdata();
+
+	da9052_lock(priv->da9052);
+	ret = read_da9052_reg(priv->da9052, DA9052_IRQMASKB_REG);
+	if (ret < 0)	{
+		DA9052_DEBUG("DA9052_TSI:da9052_tsi_disable_irq:");
+		DA9052_DEBUG("read_da9052_reg Failed\n");
+		da9052_unlock(priv->da9052);
+		return ret;
+	}
+	data = ret;
+	switch (tsi_irq) {
+	case TSI_PEN_DWN:
+		data = mask_pendwn_irq(data);
+	break;
+	case TSI_DATA_RDY:
+		data = mask_tsi_rdy_irq(data);
+	break;
+	default:
+		DA9052_DEBUG("DA9052_TSI:da9052_tsi_disable_irq:");
+		DA9052_DEBUG("Invalid IRQ passed\n");
+		da9052_unlock(priv->da9052);
+		return -EINVAL;
+	}
+	ret = write_da9052_reg(priv->da9052, DA9052_IRQMASKB_REG, data);
+	if (ret) {
+		DA9052_DEBUG("DA9052_TSI:da9052_tsi_disable_irq:");
+		DA9052_DEBUG("write_da9052_reg Failed\n");
+		da9052_unlock(priv->da9052);
+		return ret;
+	}
+	da9052_unlock(priv->da9052);
+	switch (tsi_irq) {
+	case TSI_PEN_DWN:
+		ts->tsi_conf.tsi_pendown_irq_mask = SET;
+	break;
+	case TSI_DATA_RDY:
+		ts->tsi_conf.tsi_ready_irq_mask = SET;
+	break;
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+
+}
+
+static ssize_t da9052_tsi_enable_irq(struct da9052_ts_priv *priv,
+					enum TSI_IRQ tsi_irq)
+{
+	u8 data = 0;
+	ssize_t ret = 0;
+	struct da9052_tsi_info  *ts = get_tsi_drvdata();
+
+	da9052_lock(priv->da9052);
+	ret = read_da9052_reg(priv->da9052, DA9052_IRQMASKB_REG);
+	if (ret < 0) {
+		DA9052_DEBUG("DA9052_TSI:da9052_tsi_enable_irq:");
+		DA9052_DEBUG("read_da9052_reg Failed\n");
+		da9052_unlock(priv->da9052);
+		return ret;
+	}
+
+	data = ret;
+	switch (tsi_irq) {
+	case TSI_PEN_DWN:
+		data = unmask_pendwn_irq(data);
+	break;
+	case TSI_DATA_RDY:
+		data = unmask_tsi_rdy_irq(data);
+	break;
+	default:
+		DA9052_DEBUG("DA9052_TSI:da9052_tsi_enable_irq:");
+		DA9052_DEBUG("Invalid IRQ passed\n");
+		da9052_unlock(priv->da9052);
+		return -EINVAL;
+	}
+	ret = write_da9052_reg(priv->da9052, DA9052_IRQMASKB_REG, data);
+	if (ret) {
+		DA9052_DEBUG("DA9052_TSI:da9052_tsi_enable_irq:");
+		DA9052_DEBUG("write_da9052_reg Failed\n");
+		da9052_unlock(priv->da9052);
+		return ret;
+	}
+	da9052_unlock(priv->da9052);
+	switch (tsi_irq) {
+	case TSI_PEN_DWN:
+		ts->tsi_conf.tsi_pendown_irq_mask = RESET;
+	break;
+	case TSI_DATA_RDY:
+		ts->tsi_conf.tsi_ready_irq_mask = RESET;
+	break;
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static ssize_t da9052_tsi_config_gpio(struct da9052_ts_priv *priv)
+{
+	u8 idx = 0;
+	ssize_t ret = 0;
+	struct da9052_ssc_msg ssc_msg[priv->tsi_pdata->num_gpio_tsi_register];
+
+	ssc_msg[idx++].addr  = DA9052_GPIO0203_REG;
+	ssc_msg[idx++].addr  = DA9052_GPIO0405_REG;
+	ssc_msg[idx++].addr  = DA9052_GPIO0607_REG;
+
+	da9052_lock(priv->da9052);
+	ret = priv->da9052->read_many(priv->da9052, ssc_msg, idx);
+	if (ret) {
+		DA9052_DEBUG("DA9052_TSI: %s:", __func__);
+		DA9052_DEBUG("da9052_ssc_read_many Failed\n");
+		da9052_unlock(priv->da9052);
+		return ret;
+	}
+
+	idx = 0;
+	ssc_msg[idx].data = clear_bits(ssc_msg[idx].data,
+						DA9052_GPIO0203_GPIO3PIN);
+	idx++;
+	ssc_msg[idx].data = clear_bits(ssc_msg[idx].data,
+		(DA9052_GPIO0405_GPIO4PIN | DA9052_GPIO0405_GPIO5PIN));
+	idx++;
+	ssc_msg[idx].data = clear_bits(ssc_msg[idx].data,
+		(DA9052_GPIO0607_GPIO6PIN | DA9052_GPIO0607_GPIO7PIN));
+	idx++;
+
+	ret = priv->da9052->write_many(priv->da9052, ssc_msg, idx);
+	if (ret) {
+		DA9052_DEBUG("DA9052_TSI: %s:", __func__);
+		DA9052_DEBUG("da9052_ssc_read_many Failed\n");
+		da9052_unlock(priv->da9052);
+		return ret;
+	}
+	da9052_unlock(priv->da9052);
+
+	return 0;
+}
+
+s32 da9052_pm_configure_ldo(struct da9052_ts_priv *priv,
+				struct da9052_ldo_config ldo_config)
+{
+	struct da9052_ssc_msg msg;
+	u8 reg_num;
+	u8 ldo_volt;
+	u8 ldo_volt_bit = 0;
+	u8 ldo_conf_bit = 0;
+	u8 ldo_en_bit = 0;
+	s8 ldo_pd_bit = -1;
+	s32 ret = 0;
+
+	if (validate_ldo9_mV(ldo_config.ldo_volt))
+		return INVALID_LDO9_VOLT_VALUE;
+
+	ldo_volt = ldo9_mV_to_reg(ldo_config.ldo_volt);
+
+	reg_num = DA9052_LDO9_REG;
+	ldo_volt_bit = DA9052_LDO9_VLDO9;
+	ldo_conf_bit = DA9052_LDO9_LDO9CONF;
+	ldo_en_bit = DA9052_LDO9_LDO9EN;
+
+	da9052_lock(priv->da9052);
+
+	msg.addr = reg_num;
+
+	ret = priv->da9052->read(priv->da9052, &msg);
+	if (ret) {
+		da9052_unlock(priv->da9052);
+		return -EINVAL;
+	}
+	msg.data = ldo_volt |
+		(ldo_config.ldo_conf ? ldo_conf_bit : 0) |
+		(msg.data & ldo_en_bit);
+
+	ret = priv->da9052->write(priv->da9052, &msg);
+	if (ret) {
+		da9052_unlock(priv->da9052);
+		return -EINVAL;
+	}
+
+	if (-1 != ldo_pd_bit) {
+		msg.addr = DA9052_PULLDOWN_REG;
+		ret = priv->da9052->read(priv->da9052, &msg);
+		if (ret) {
+			da9052_unlock(priv->da9052);
+			return -EINVAL;
+		}
+
+		msg.data = (ldo_config.ldo_pd ?
+				set_bits(msg.data, ldo_pd_bit) :
+				clear_bits(msg.data, ldo_pd_bit));
+
+		ret = priv->da9052->write(priv->da9052, &msg);
+		if (ret) {
+			da9052_unlock(priv->da9052);
+			return -EINVAL;
+		}
+
+	}
+	da9052_unlock(priv->da9052);
+
+	return 0;
+}
+
+
+s32 da9052_pm_set_ldo(struct da9052_ts_priv *priv, u8 ldo_num, u8 flag)
+{
+	struct da9052_ssc_msg msg;
+	u8 reg_num = 0;
+	u8 value = 0;
+	s32 ret = 0;
+
+	DA9052_DEBUG("I am in function: %s\n", __func__);
+
+	reg_num = DA9052_LDO9_REG;
+	value =	DA9052_LDO9_LDO9EN;
+	da9052_lock(priv->da9052);
+
+	msg.addr = reg_num;
+
+	ret = priv->da9052->read(priv->da9052, &msg);
+	if (ret) {
+		da9052_unlock(priv->da9052);
+		return -EINVAL;
+	}
+
+	msg.data = flag ?
+		set_bits(msg.data, value) :
+		clear_bits(msg.data, value);
+
+	ret = priv->da9052->write(priv->da9052, &msg);
+	if (ret) {
+		da9052_unlock(priv->da9052);
+		return -EINVAL;
+	}
+
+	da9052_unlock(priv->da9052);
+
+	return 0;
+}
+
+static ssize_t da9052_tsi_config_power_supply(struct da9052_ts_priv *priv,
+						u8 state)
+{
+	struct da9052_ldo_config ldo_config;
+	struct da9052_tsi_info *ts = get_tsi_drvdata();
+
+	if (state != ENABLE && state != DISABLE) {
+		DA9052_DEBUG("DA9052_TSI: %s: ", __func__);
+		DA9052_DEBUG("Invalid state Passed\n");
+		return -EINVAL;
+	}
+
+	ldo_config.ldo_volt = priv->tsi_pdata->tsi_supply_voltage;
+	ldo_config.ldo_num =  priv->tsi_pdata->tsi_ref_source;
+	ldo_config.ldo_conf = RESET;
+
+	if (da9052_pm_configure_ldo(priv, ldo_config))
+		return -EINVAL;
+
+	if (da9052_pm_set_ldo(priv, priv->tsi_pdata->tsi_ref_source, state))
+		return -EINVAL;
+
+	if (state == ENABLE)
+		ts->tsi_conf.ldo9_en = SET;
+	else
+		ts->tsi_conf.ldo9_en = RESET;
+
+	return 0;
+}
+
+static ssize_t da9052_tsi_config_auto_mode(struct da9052_ts_priv *priv,
+						u8 state)
+{
+	u8 data;
+	s32 ret = 0;
+	struct da9052_tsi_info *ts = get_tsi_drvdata();
+
+	if (state != ENABLE && state != DISABLE)
+		return -EINVAL;
+
+	da9052_lock(priv->da9052);
+
+	ret = read_da9052_reg(priv->da9052, DA9052_TSICONTA_REG);
+	if (ret < 0) {
+		DA9052_DEBUG("DA9052_TSI: %s:", __func__);
+		DA9052_DEBUG("read_da9052_reg Failed\n");
+		da9052_unlock(priv->da9052);
+		return ret;
+	}
+
+	data = (u8)ret;
+
+	if (state == ENABLE)
+		data = set_auto_tsi_en(data);
+	else if (state == DISABLE)
+		data = reset_auto_tsi_en(data);
+	else {
+		DA9052_DEBUG("DA9052_TSI: %s:", __func__);
+		DA9052_DEBUG("Invalid Parameter Passed\n");
+		da9052_unlock(priv->da9052);
+		return -EINVAL;
+	}
+
+	ret = write_da9052_reg(priv->da9052, DA9052_TSICONTA_REG, data);
+	if (ret) {
+		DA9052_DEBUG("DA9052_TSI: %s:", __func__);
+		DA9052_DEBUG(" Failed to configure Auto TSI mode\n");
+		da9052_unlock(priv->da9052);
+		return ret;
+	}
+	da9052_unlock(priv->da9052);
+	ts->tsi_conf.auto_cont.da9052_tsi_cont_a = data;
+	return 0;
+}
+
+static ssize_t da9052_tsi_config_manual_mode(struct da9052_ts_priv *priv,
+						u8 state)
+{
+	u8 data = 0;
+	ssize_t ret = 0;
+	struct da9052_tsi_info *ts = get_tsi_drvdata();
+
+	if (state != ENABLE && state != DISABLE) {
+		DA9052_DEBUG("DA9052_TSI: %s: ", __func__);
+		DA9052_DEBUG("Invalid state Passed\n");
+		return -EINVAL;
+	}
+
+	da9052_lock(priv->da9052);
+
+	ret = read_da9052_reg(priv->da9052, DA9052_TSICONTB_REG);
+	if (ret < 0) {
+		DA9052_DEBUG("DA9052_TSI: %s:", __func__);
+		DA9052_DEBUG("read_da9052_reg Failed\n");
+		da9052_unlock(priv->da9052);
+		return ret;
+	}
+
+	data = (u8)ret;
+	if (state == DISABLE)
+		data = disable_tsi_manual_mode(data);
+	else
+		data = enable_tsi_manual_mode(data);
+
+	ret = write_da9052_reg(priv->da9052, DA9052_TSICONTB_REG, data);
+	if (ret) {
+		DA9052_DEBUG("DA9052_TSI: %s:", __func__);
+		DA9052_DEBUG("write_da9052_reg Failed\n");
+		da9052_unlock(priv->da9052);
+		return ret;
+	}
+
+	if (state == DISABLE)
+		ts->tsi_conf.man_cont.tsi_cont_b.tsi_man = RESET;
+	else
+		ts->tsi_conf.man_cont.tsi_cont_b.tsi_man = SET;
+
+	data = 0;
+	data = set_bits(data, DA9052_ADC_TSI);
+
+	ret = write_da9052_reg(priv->da9052, DA9052_ADCMAN_REG, data);
+	if (ret) {
+		DA9052_DEBUG("DA9052_TSI: %s:", __func__);
+		DA9052_DEBUG("ADC write Failed\n");
+		da9052_unlock(priv->da9052);
+		return ret;
+	}
+	da9052_unlock(priv->da9052);
+
+	return 0;
+}
+
+static u32 da9052_tsi_get_reg_data(struct da9052_ts_priv *priv)
+{
+	u32 free_cnt, copy_cnt, cnt;
+
+	if (down_interruptible(&priv->tsi_reg_fifo.lock))
+		return 0;
+
+	copy_cnt = 0;
+
+	if ((priv->tsi_reg_fifo.head - priv->tsi_reg_fifo.tail) > 1) {
+		free_cnt = get_reg_free_space_cnt(priv);
+		if (free_cnt > TSI_POLL_SAMPLE_CNT)
+			free_cnt = TSI_POLL_SAMPLE_CNT;
+
+		cnt = da9052_tsi_get_rawdata(
+			&priv->tsi_reg_fifo.data[priv->tsi_reg_fifo.tail],
+			free_cnt);
+
+		if (cnt > free_cnt) {
+			DA9052_DEBUG("EH copied more data");
+			return -EINVAL;
+		}
+
+		copy_cnt = cnt;
+
+		while (cnt--)
+			incr_with_wrap_reg_fifo(priv->tsi_reg_fifo.tail);
+
+	} else if ((priv->tsi_reg_fifo.head - priv->tsi_reg_fifo.tail) <= 0) {
+
+		free_cnt = (TSI_REG_DATA_BUF_SIZE - priv->tsi_reg_fifo.tail);
+		if (free_cnt > TSI_POLL_SAMPLE_CNT) {
+			free_cnt = TSI_POLL_SAMPLE_CNT;
+
+			cnt = da9052_tsi_get_rawdata(
+			&priv->tsi_reg_fifo.data[priv->tsi_reg_fifo.tail],
+			free_cnt);
+			if (cnt > free_cnt) {
+				DA9052_DEBUG("EH copied more data");
+				return -EINVAL;
+			}
+			copy_cnt = cnt;
+
+			while (cnt--)
+				incr_with_wrap_reg_fifo(
+						priv->tsi_reg_fifo.tail);
+		} else {
+			if (free_cnt) {
+				cnt = da9052_tsi_get_rawdata(
+					&priv->
+					tsi_reg_fifo.data[priv->
+					tsi_reg_fifo.tail],
+					free_cnt
+					);
+				if (cnt > free_cnt) {
+					DA9052_DEBUG("EH copied more data");
+					return -EINVAL;
+				}
+				copy_cnt = cnt;
+				while (cnt--)
+					incr_with_wrap_reg_fifo(
+						priv->tsi_reg_fifo.tail);
+			}
+			free_cnt = priv->tsi_reg_fifo.head;
+			if (free_cnt > TSI_POLL_SAMPLE_CNT - copy_cnt)
+				free_cnt = TSI_POLL_SAMPLE_CNT - copy_cnt;
+			if (free_cnt) {
+				cnt = da9052_tsi_get_rawdata(
+					&priv->tsi_reg_fifo.data[priv->
+					tsi_reg_fifo.tail], free_cnt
+					);
+				if (cnt > free_cnt) {
+					DA9052_DEBUG("EH copied more data");
+					return -EINVAL;
+				}
+
+				copy_cnt += cnt;
+
+				while (cnt--)
+					incr_with_wrap_reg_fifo(
+						priv->tsi_reg_fifo.tail);
+			}
+		}
+	} else
+		copy_cnt = 0;
+
+	up(&priv->tsi_reg_fifo.lock);
+
+	return copy_cnt;
+}
+
+
+static ssize_t da9052_tsi_reg_proc_thread(void *ptr)
+{
+	u32 data_cnt;
+	ssize_t ret = 0;
+	struct da9052_tsi_info *ts;
+	struct da9052_ts_priv *priv = (struct da9052_ts_priv *)ptr;
+
+	set_freezable();
+
+	while (priv->tsi_reg_proc_thread.state == ACTIVE) {
+
+		try_to_freeze();
+
+		set_current_state(TASK_INTERRUPTIBLE);
+		schedule_timeout(msecs_to_jiffies(priv->
+					tsi_reg_data_poll_interval));
+
+		ts = get_tsi_drvdata();
+
+		if (!ts->pen_dwn_event)
+			continue;
+
+		data_cnt = da9052_tsi_get_reg_data(priv);
+
+		da9052_tsi_process_reg_data(priv);
+
+		if (data_cnt)
+			ts->tsi_zero_data_cnt = 0;
+		else {
+			if ((++(ts->tsi_zero_data_cnt)) >
+						     ts->tsi_penup_count) {
+				ts->pen_dwn_event = RESET;
+				da9052_tsi_penup_event(priv);
+			}
+		}
+	}
+
+	complete_and_exit(&priv->tsi_reg_proc_thread.notifier, 0);
+	return 0;
+}
+
+
+static void da9052_tsi_penup_event(struct da9052_ts_priv *priv)
+{
+
+	struct da9052_tsi_info *ts = get_tsi_drvdata();
+	struct input_dev *ip_dev =
+		(struct input_dev *)da9052_tsi_get_input_dev(
+		(u8)TSI_INPUT_DEVICE_OFF);
+
+	if (da9052_tsi_config_auto_mode(priv, DISABLE))
+		goto exit;
+	ts->tsi_conf.auto_cont.tsi_cont_a.auto_tsi_en = RESET;
+
+	if (da9052_tsi_config_power_supply(priv, ENABLE))
+		goto exit;
+
+	ts->tsi_conf.ldo9_en = RESET;
+
+	if (da9052_tsi_enable_irq(priv, TSI_PEN_DWN))
+		goto exit;
+	ts->tsi_conf.tsi_pendown_irq_mask = RESET;
+	tsi_reg.tsi_state =  WAIT_FOR_PEN_DOWN;
+
+	if (da9052_tsi_disable_irq(priv, TSI_DATA_RDY))
+		goto exit;
+
+	ts->tsi_zero_data_cnt = 0;
+	priv->early_data_flag = TRUE;
+	priv->debounce_over = FALSE;
+	priv->win_reference_valid = FALSE;
+
+	printk(KERN_INFO "The raw data count is %d\n", priv->raw_data_cnt);
+	printk(KERN_INFO "The OS data count is %d\n", priv->os_data_cnt);
+	printk(KERN_INFO "PEN UP DECLARED\n");
+	input_report_abs(ip_dev, BTN_TOUCH, 0);
+	input_sync(ip_dev);
+	priv->os_data_cnt = 0;
+	priv->raw_data_cnt = 0;
+
+exit:
+	clean_tsi_fifos(priv);
+	return;
+}
+
+void da9052_tsi_pen_down_handler(struct da9052_eh_nb *eh_data, u32 event)
+{
+	ssize_t ret = 0;
+	struct da9052_ts_priv *priv =
+		container_of(eh_data, struct da9052_ts_priv, pd_nb);
+	struct da9052_tsi_info *ts = get_tsi_drvdata();
+	struct input_dev *ip_dev =
+		(struct input_dev *)da9052_tsi_get_input_dev(
+		(u8)TSI_INPUT_DEVICE_OFF);
+
+	if (tsi_reg.tsi_state !=  WAIT_FOR_PEN_DOWN)
+		return;
+
+	tsi_reg.tsi_state = WAIT_FOR_SAMPLING;
+
+	if (ts->tsi_conf.state != TSI_AUTO_MODE) {
+		DA9052_DEBUG("DA9052_TSI: %s:", __func__);
+		DA9052_DEBUG(" Configure TSI to auto mode.\n");
+		DA9052_DEBUG("DA9052_TSI: %s:", __func__);
+		DA9052_DEBUG(" Then call this API.\n");
+		goto fail;
+	}
+
+	if (da9052_tsi_config_power_supply(priv, ENABLE))
+		goto fail;
+
+	if (da9052_tsi_disable_irq(priv, TSI_PEN_DWN))
+		goto fail;
+
+	if (da9052_tsi_config_auto_mode(priv, ENABLE))
+		goto fail;
+	ts->tsi_conf.auto_cont.tsi_cont_a.auto_tsi_en = SET;
+
+	if (da9052_tsi_enable_irq(priv, TSI_DATA_RDY))
+		goto fail;
+
+	input_sync(ip_dev);
+
+	ts->tsi_rdy_event = (DA9052_EVENTB_ETSIREADY & (event>>8));
+	ts->pen_dwn_event = (DA9052_EVENTB_EPENDOWN & (event>>8));
+
+	tsi_reg.tsi_state =  SAMPLING_ACTIVE;
+
+	goto success;
+
+fail:
+	if (ts->pd_reg_status) {
+		priv->da9052->unregister_event_notifier(priv->da9052,
+						&priv->pd_nb);
+		ts->pd_reg_status = RESET;
+
+		priv->da9052->register_event_notifier(priv->da9052,
+					&priv->datardy_nb);
+		da9052_tsi_reg_pendwn_event(priv);
+	}
+
+success:
+	ret = 0;
+	printk(KERN_INFO "Exiting PEN DOWN HANDLER\n");
+}
+
+void da9052_tsi_data_ready_handler(struct da9052_eh_nb *eh_data, u32 event)
+{
+	struct da9052_ssc_msg tsi_data[4];
+	s32 ret;
+	struct da9052_ts_priv *priv =
+		container_of(eh_data, struct da9052_ts_priv, datardy_nb);
+
+	if (tsi_reg.tsi_state !=  SAMPLING_ACTIVE)
+		return;
+
+	tsi_data[0].addr  = DA9052_TSIXMSB_REG;
+	tsi_data[1].addr  = DA9052_TSIYMSB_REG;
+	tsi_data[2].addr  = DA9052_TSILSB_REG;
+	tsi_data[3].addr  = DA9052_TSIZMSB_REG;
+
+	tsi_data[0].data  = 0;
+	tsi_data[1].data  = 0;
+	tsi_data[2].data  = 0;
+	tsi_data[3].data  = 0;
+
+	da9052_lock(priv->da9052);
+
+	ret = priv->da9052->read_many(priv->da9052, tsi_data, 4);
+	if (ret) {
+		DA9052_DEBUG("Error in reading TSI data\n");
+		da9052_unlock(priv->da9052);
+		return;
+	}
+	da9052_unlock(priv->da9052);
+
+#if 1
+	mutex_lock(&tsi_reg.tsi_fifo_lock);
+
+	tsi_reg.tsi_fifo[tsi_reg.tsi_fifo_end].x_msb = tsi_data[0].data;
+	tsi_reg.tsi_fifo[tsi_reg.tsi_fifo_end].y_msb = tsi_data[1].data;
+	tsi_reg.tsi_fifo[tsi_reg.tsi_fifo_end].lsb   = tsi_data[2].data;
+	tsi_reg.tsi_fifo[tsi_reg.tsi_fifo_end].z_msb = tsi_data[3].data;
+	incr_with_wrap(tsi_reg.tsi_fifo_end);
+
+	if (tsi_reg.tsi_fifo_end == tsi_reg.tsi_fifo_start)
+		tsi_reg.tsi_fifo_start++;
+
+	mutex_unlock(&tsi_reg.tsi_fifo_lock);
+#endif
+/*	printk(KERN_INFO "Exiting Data ready handler\n");*/
+}
+
+static s32 da9052_tsi_get_rawdata(struct da9052_tsi_reg *buf, u8 cnt)
+{
+	u32 data_cnt = 0;
+	u32 rem_data_cnt = 0;
+
+	mutex_lock(&tsi_reg.tsi_fifo_lock);
+
+	if (tsi_reg.tsi_fifo_start < tsi_reg.tsi_fifo_end) {
+		data_cnt = (tsi_reg.tsi_fifo_end - tsi_reg.tsi_fifo_start);
+
+		if (cnt < data_cnt)
+			data_cnt = cnt;
+
+		memcpy(buf, &tsi_reg.tsi_fifo[tsi_reg.tsi_fifo_start],
+				sizeof(struct da9052_tsi_reg) * data_cnt);
+
+		tsi_reg.tsi_fifo_start += data_cnt;
+
+		if (tsi_reg.tsi_fifo_start == tsi_reg.tsi_fifo_end) {
+			tsi_reg.tsi_fifo_start = 0;
+			tsi_reg.tsi_fifo_end = 0;
+		}
+	} else if (tsi_reg.tsi_fifo_start > tsi_reg.tsi_fifo_end) {
+		data_cnt = ((TSI_FIFO_SIZE - tsi_reg.tsi_fifo_start)
+		+ tsi_reg.tsi_fifo_end);
+
+		if (cnt < data_cnt)
+			data_cnt = cnt;
+
+		if (data_cnt <= (TSI_FIFO_SIZE - tsi_reg.tsi_fifo_start)) {
+			memcpy(buf, &tsi_reg.tsi_fifo[tsi_reg.tsi_fifo_start],
+				sizeof(struct da9052_tsi_reg) * data_cnt);
+
+			tsi_reg.tsi_fifo_start += data_cnt;
+			if (tsi_reg.tsi_fifo_start >= TSI_FIFO_SIZE)
+				tsi_reg.tsi_fifo_start = 0;
+		} else {
+			memcpy(buf, &tsi_reg.tsi_fifo[tsi_reg.tsi_fifo_start],
+				sizeof(struct da9052_tsi_reg)
+				* (TSI_FIFO_SIZE - tsi_reg.tsi_fifo_start));
+
+			rem_data_cnt = (data_cnt -
+				(TSI_FIFO_SIZE - tsi_reg.tsi_fifo_start));
+
+			memcpy(buf, &tsi_reg.tsi_fifo[0],
+				sizeof(struct da9052_tsi_reg) * rem_data_cnt);
+
+			tsi_reg.tsi_fifo_start = rem_data_cnt;
+		}
+
+		if (tsi_reg.tsi_fifo_start == tsi_reg.tsi_fifo_end) {
+				tsi_reg.tsi_fifo_start = 0;
+			tsi_reg.tsi_fifo_end = 0;
+		}
+	} else
+		data_cnt = 0;
+
+	mutex_unlock(&tsi_reg.tsi_fifo_lock);
+
+	return data_cnt;
+}
+
+static ssize_t da9052_tsi_suspend(struct platform_device *dev,
+							pm_message_t state)
+{
+	printk(KERN_INFO "%s: called\n", __func__);
+	return 0;
+}
+
+static ssize_t da9052_tsi_resume(struct platform_device *dev)
+{
+	printk(KERN_INFO "%s: called\n", __func__);
+	return 0;
+}
+
+static s32 __devinit da9052_tsi_probe(struct platform_device *pdev)
+{
+
+	struct da9052_ts_priv *priv;
+	struct da9052_tsi_platform_data *pdata = pdev->dev.platform_data;
+
+	priv = kzalloc(sizeof(*priv), GFP_KERNEL);
+	if (!priv)
+		return -ENOMEM;
+	priv->da9052 = dev_get_drvdata(pdev->dev.parent);
+	platform_set_drvdata(pdev, priv);
+
+	priv->tsi_pdata = pdata;
+
+	if (da9052_tsi_init_drv(priv))
+			return -EFAULT;
+
+	mutex_init(&tsi_reg.tsi_fifo_lock);
+	tsi_reg.tsi_state = WAIT_FOR_PEN_DOWN;
+
+	printk(KERN_INFO "TSI Drv Successfully Inserted %s\n",
+					DA9052_TSI_DEVICE_NAME);
+	return 0;
+}
+
+static int __devexit da9052_tsi_remove(struct platform_device *pdev)
+{
+	struct da9052_ts_priv *priv = platform_get_drvdata(pdev);
+	struct da9052_tsi_info *ts = get_tsi_drvdata();
+	s32 ret = 0, i = 0;
+
+	ret = da9052_tsi_config_state(priv, TSI_IDLE);
+	if (!ret)
+		return -EINVAL;
+
+	if (ts->pd_reg_status) {
+		priv->da9052->unregister_event_notifier(priv->da9052,
+							&priv->pd_nb);
+		ts->pd_reg_status = RESET;
+	}
+
+	if (ts->datardy_reg_status) {
+		priv->da9052->unregister_event_notifier(priv->da9052,
+							&priv->datardy_nb);
+		ts->datardy_reg_status = RESET;
+	}
+
+	mutex_destroy(&tsi_reg.tsi_fifo_lock);
+
+	priv->tsi_reg_proc_thread.state = INACTIVE;
+	wait_for_completion(&priv->tsi_reg_proc_thread.notifier);
+
+	priv->tsi_raw_proc_thread.state = INACTIVE;
+	wait_for_completion(&priv->tsi_raw_proc_thread.notifier);
+
+	for (i = 0; i < NUM_INPUT_DEVS; i++)
+		input_unregister_device(ts->input_devs[i]);
+
+	platform_set_drvdata(pdev, NULL);
+	DA9052_DEBUG(KERN_DEBUG "Removing %s\n", DA9052_TSI_DEVICE_NAME);
+
+	return 0;
+}
+
+static struct platform_driver da9052_tsi_driver = {
+	.probe		= da9052_tsi_probe,
+	.remove		= __devexit_p(da9052_tsi_remove),
+	.suspend	= da9052_tsi_suspend,
+	.resume		= da9052_tsi_resume,
+	.driver		= {
+				.name	= DA9052_TSI_DEVICE_NAME,
+				.owner	= THIS_MODULE,
+			},
+};
+
+static int __init da9052_tsi_init(void)
+{
+	printk(KERN_DEBUG "DA9052 TSI Device Driver, v1.0\n");
+	return platform_driver_register(&da9052_tsi_driver);
+}
+module_init(da9052_tsi_init);
+
+static void __exit da9052_tsi_exit(void)
+{
+	printk(KERN_ERR "TSI Driver %s Successfully Removed\n",
+					DA9052_TSI_DEVICE_NAME);
+	return;
+
+}
+module_exit(da9052_tsi_exit);
+
+MODULE_DESCRIPTION("Touchscreen driver for Dialog Semiconductor DA9052");
+MODULE_AUTHOR("Dialog Semiconductor Ltd <dchen@diasemi.com>");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:" DRIVER_NAME);
diff --git a/drivers/input/touchscreen/da9052_tsi_calibrate.c b/drivers/input/touchscreen/da9052_tsi_calibrate.c
new file mode 100644
index 00000000000..6208462c584
--- /dev/null
+++ b/drivers/input/touchscreen/da9052_tsi_calibrate.c
@@ -0,0 +1,107 @@
+/*
+ * da9052_tsi_calibrate.c  --  TSI Calibration driver for Dialog DA9052
+ *
+ * Copyright(c) 2009 Dialog Semiconductor Ltd.
+ *
+ * Author: Dialog Semiconductor Ltd <dchen@diasemi.com>
+ *
+ *  This program is free software; you can redistribute  it and/or modify it
+ *  under  the terms of  the GNU General  Public License as published by the
+ *  Free Software Foundation;  either version 2 of the  License, or (at your
+ *  option) any later version.
+ *
+ */
+
+#include <linux/mfd/da9052/tsi.h>
+
+static struct Calib_xform_matrix_t xform = {
+		.An = DA9052_TSI_CALIB_AN,
+		.Bn = DA9052_TSI_CALIB_BN,
+		.Cn = DA9052_TSI_CALIB_CN,
+		.Dn = DA9052_TSI_CALIB_DN,
+		.En = DA9052_TSI_CALIB_EN,
+		.Fn = DA9052_TSI_CALIB_FN,
+		.Divider = DA9052_TSI_CALIB_DIVIDER
+};
+
+static struct calib_cfg_t calib = {
+	.calibrate_flag = TSI_USE_CALIBRATION,
+};
+
+struct calib_cfg_t *get_calib_config(void)
+{
+	return &calib;
+}
+
+ssize_t da9052_tsi_set_calib_matrix(struct da9052_tsi_data *displayPtr,
+				struct da9052_tsi_data *screenPtr)
+{
+
+	int  retValue = SUCCESS ;
+
+	xform.Divider = ((screenPtr[0].x - screenPtr[1].x)
+			* (screenPtr[1].y - screenPtr[2].y))
+			- ((screenPtr[1].x - screenPtr[2].x)
+			* (screenPtr[0].y - screenPtr[1].y));
+
+	if (xform.Divider == 0)
+		retValue = -FAILURE;
+	else	{
+		xform.An = ((displayPtr[0].x - displayPtr[1].x)
+			* (screenPtr[1].y - screenPtr[2].y))
+			- ((displayPtr[1].x - displayPtr[2].x)
+			* (screenPtr[0].y - screenPtr[1].y));
+
+		xform.Bn = ((displayPtr[1].x - displayPtr[2].x)
+			* (screenPtr[0].x - screenPtr[1].x))
+			- ((screenPtr[1].x - screenPtr[2].x)
+			* (displayPtr[0].x - displayPtr[1].x));
+
+		 xform.Cn = (displayPtr[0].x * xform.Divider)
+			- (screenPtr[0].x * xform.An)
+			- (screenPtr[0].y * xform.Bn);
+
+		xform.Dn = ((displayPtr[0].y - displayPtr[1].y)
+			* (screenPtr[1].y - screenPtr[2].y))
+			- ((displayPtr[1].y - displayPtr[2].y)
+			* (screenPtr[0].y - screenPtr[1].y));
+
+		xform.En = ((displayPtr[1].y - displayPtr[2].y)
+			* (screenPtr[0].x - screenPtr[1].x))
+			- ((screenPtr[1].x - screenPtr[2].x)
+			* (displayPtr[0].y - displayPtr[1].y));
+
+		xform.Fn = (displayPtr[0].y * xform.Divider)
+			- (screenPtr[0].x * xform.Dn)
+			- (screenPtr[0].y * xform.En);
+	}
+
+	return retValue;
+}
+
+ssize_t da9052_tsi_get_calib_display_point(struct da9052_tsi_data *displayPtr)
+{
+	int  retValue = TRUE;
+	struct da9052_tsi_data screen_coord;
+
+	screen_coord = *displayPtr;
+	if (xform.Divider != 0)	{
+		displayPtr->x = ((xform.An * screen_coord.x) +
+			(xform.Bn * screen_coord.y) +
+				xform.Cn
+			) / xform.Divider;
+
+	displayPtr->y = ((xform.Dn * screen_coord.x) +
+			(xform.En * screen_coord.y) +
+				xform.Fn
+			) / xform.Divider;
+	} else
+		retValue = FALSE;
+
+#if DA9052_TSI_CALIB_DATA_PROFILING
+	printk(KERN_DEBUG "C\tX\t%4d\tY\t%4d\n",
+					displayPtr->x,
+					displayPtr->y);
+#endif
+	return retValue;
+}
diff --git a/drivers/input/touchscreen/da9052_tsi_filter.c b/drivers/input/touchscreen/da9052_tsi_filter.c
new file mode 100644
index 00000000000..c29dd016c34
--- /dev/null
+++ b/drivers/input/touchscreen/da9052_tsi_filter.c
@@ -0,0 +1,489 @@
+/*
+ * da9052_tsi_filter.c  --  TSI filter driver for Dialog DA9052
+ *
+ * Copyright(c) 2009 Dialog Semiconductor Ltd.
+ *
+ * Author: Dialog Semiconductor Ltd <dchen@diasemi.com>
+ *
+ *  This program is free software; you can redistribute  it and/or modify it
+ *  under  the terms of  the GNU General  Public License as published by the
+ *  Free Software Foundation;  either version 2 of the  License, or (at your
+ *  option) any later version.
+ *
+ */
+
+#include <linux/input.h>
+#include <linux/freezer.h>
+#include <linux/mfd/da9052/tsi.h>
+
+#define get_abs(x)	(x < 0 ? ((-1) * x) : (x))
+
+#define WITHIN_WINDOW(x, y)	((get_abs(x) <= TSI_X_WINDOW_SIZE) && \
+				(get_abs(y) <= TSI_Y_WINDOW_SIZE))
+
+#define FIRST_SAMPLE					0
+
+#define incr_with_wrap_raw_fifo(x)			\
+		if (++x >= TSI_RAW_DATA_BUF_SIZE)	\
+			x = 0
+
+#define decr_with_wrap_raw_fifo(x)			\
+		if (--x < 0)				\
+			x = (TSI_RAW_DATA_BUF_SIZE-1)
+
+static u32 get_raw_data_cnt(struct da9052_ts_priv *priv);
+static void da9052_tsi_convert_reg_to_coord(struct da9052_ts_priv *priv,
+					struct da9052_tsi_data *raw_data);
+static inline void clean_tsi_reg_fifo(struct da9052_ts_priv *priv);
+static inline void clean_tsi_raw_fifo(struct da9052_ts_priv *priv);
+
+#if (ENABLE_AVERAGE_FILTER)
+static void da9052_tsi_avrg_filter(struct da9052_ts_priv *priv,
+					struct da9052_tsi_data *tsi_avg_data);
+
+#endif
+#if (ENABLE_TSI_DEBOUNCE)
+static s32 da9052_tsi_calc_debounce_data(struct da9052_ts_priv *priv,
+					struct da9052_tsi_data *raw_data);
+
+#endif
+# if (ENABLE_WINDOW_FILTER)
+static s32 diff_within_window(struct da9052_tsi_data *prev_raw_data,
+			      struct da9052_tsi_data *cur_raw_data);
+#endif
+static s32 da9052_tsi_window_filter(struct da9052_ts_priv *ts,
+					struct da9052_tsi_data *raw_data);
+
+void clean_tsi_fifos(struct da9052_ts_priv *priv)
+{
+	clean_tsi_raw_fifo(priv);
+	clean_tsi_reg_fifo(priv);
+}
+
+void __init da9052_init_tsi_fifos(struct da9052_ts_priv *priv)
+{
+	sema_init(&priv->tsi_raw_fifo.lock, 1);
+	sema_init(&priv->tsi_reg_fifo.lock, 1);
+
+	clean_tsi_raw_fifo(priv);
+	clean_tsi_reg_fifo(priv);
+}
+
+u32 get_reg_data_cnt(struct da9052_ts_priv *priv)
+{
+	u8 reg_data_cnt;
+
+	if (priv->tsi_reg_fifo.head <= priv->tsi_reg_fifo.tail) {
+		reg_data_cnt = (priv->tsi_reg_fifo.tail -
+				priv->tsi_reg_fifo.head);
+	} else {
+		reg_data_cnt = (priv->tsi_reg_fifo.tail +
+				(TSI_REG_DATA_BUF_SIZE -
+				priv->tsi_reg_fifo.head));
+	}
+
+	return reg_data_cnt;
+}
+
+u32 get_reg_free_space_cnt(struct da9052_ts_priv *priv)
+{
+	u32 free_cnt;
+
+	if (priv->tsi_reg_fifo.head <= priv->tsi_reg_fifo.tail) {
+		free_cnt = ((TSI_REG_DATA_BUF_SIZE - 1) -
+			(priv->tsi_reg_fifo.tail - priv->tsi_reg_fifo.head));
+	} else
+		free_cnt = ((priv->tsi_reg_fifo.head - priv->tsi_reg_fifo.tail)
+				- 1);
+
+	return free_cnt;
+}
+
+void da9052_tsi_process_reg_data(struct da9052_ts_priv *priv)
+{
+	s32 ret;
+	struct da9052_tsi_data tmp_raw_data;
+	u32 reg_data_cnt;
+
+	if (down_interruptible(&priv->tsi_reg_fifo.lock))
+		return;
+
+	reg_data_cnt = get_reg_data_cnt(priv);
+
+	while (reg_data_cnt-- > 0) {
+
+		ret = 0;
+
+		if (get_raw_data_cnt(priv) >= (TSI_RAW_DATA_BUF_SIZE - 1)) {
+			DA9052_DEBUG("%s: RAW data FIFO is full\n",
+							__func__);
+			break;
+		}
+
+		da9052_tsi_convert_reg_to_coord(priv, &tmp_raw_data);
+
+		if ((tmp_raw_data.x < TS_X_MIN) ||
+			(tmp_raw_data.x > TS_X_MAX) ||
+			(tmp_raw_data.y < TS_Y_MIN) ||
+			(tmp_raw_data.y > TS_Y_MAX)) {
+			DA9052_DEBUG("%s: ", __func__);
+			DA9052_DEBUG("sample beyond touchscreen panel ");
+			DA9052_DEBUG("dimensions\n");
+			continue;
+		}
+
+#if (ENABLE_TSI_DEBOUNCE)
+		if (debounce_over == FALSE) {
+			ret =
+			da9052_tsi_calc_debounce_data(priv, &tmp_raw_data);
+			if (ret != SUCCESS)
+				continue;
+		}
+#endif
+
+# if (ENABLE_WINDOW_FILTER)
+		ret = da9052_tsi_window_filter(priv, &tmp_raw_data);
+		if (ret != SUCCESS)
+			continue;
+#endif
+		priv->early_data_flag = FALSE;
+
+		if (down_interruptible(&priv->tsi_raw_fifo.lock)) {
+			DA9052_DEBUG("%s: Failed to ", __func__);
+			DA9052_DEBUG("acquire RAW FIFO Lock!\n");
+
+			up(&priv->tsi_reg_fifo.lock);
+			return;
+		}
+
+		priv->tsi_raw_fifo.data[priv->tsi_raw_fifo.tail] = tmp_raw_data;
+		incr_with_wrap_raw_fifo(priv->tsi_raw_fifo.tail);
+
+		up(&priv->tsi_raw_fifo.lock);
+	}
+
+
+	up(&priv->tsi_reg_fifo.lock);
+
+	return;
+}
+
+static u32 get_raw_data_cnt(struct da9052_ts_priv *priv)
+{
+	u32 raw_data_cnt;
+
+	if (priv->tsi_raw_fifo.head <= priv->tsi_raw_fifo.tail)
+		raw_data_cnt =
+			(priv->tsi_raw_fifo.tail - priv->tsi_raw_fifo.head);
+	else
+		raw_data_cnt =
+			(priv->tsi_raw_fifo.tail + (TSI_RAW_DATA_BUF_SIZE -
+			priv->tsi_raw_fifo.head));
+
+	return raw_data_cnt;
+}
+
+static void da9052_tsi_convert_reg_to_coord(struct da9052_ts_priv *priv,
+					struct da9052_tsi_data *raw_data)
+{
+
+	struct da9052_tsi_reg *src;
+	struct da9052_tsi_data *dst = raw_data;
+
+	src = &priv->tsi_reg_fifo.data[priv->tsi_reg_fifo.head];
+
+	dst->x = (src->x_msb << X_MSB_SHIFT);
+	dst->x |= (src->lsb & X_LSB_MASK) >> X_LSB_SHIFT;
+
+	dst->y = (src->y_msb << Y_MSB_SHIFT);
+	dst->y |= (src->lsb & Y_LSB_MASK) >> Y_LSB_SHIFT;
+
+	dst->z = (src->z_msb << Z_MSB_SHIFT);
+	dst->z |= (src->lsb & Z_LSB_MASK) >> Z_LSB_SHIFT;
+
+#if DA9052_TSI_RAW_DATA_PROFILING
+	printk(KERN_DEBUG "R\tX\t%4d\tY\t%4d\tZ\t%4d\n",
+					(u16)dst->x,
+					(u16)dst->y,
+					(u16)dst->z);
+#endif
+	priv->raw_data_cnt++;
+	incr_with_wrap_reg_fifo(priv->tsi_reg_fifo.head);
+}
+
+#if (ENABLE_AVERAGE_FILTER)
+static void da9052_tsi_avrg_filter(struct da9052_ts_priv *priv,
+					struct da9052_tsi_data *tsi_avg_data)
+{
+	u8 cnt;
+
+	if (down_interruptible(&priv->tsi_raw_fifo.lock)) {
+		printk(KERN_DEBUG "%s: No RAW Lock !\n", __func__);
+		return;
+	}
+
+	(*tsi_avg_data) = priv->tsi_raw_fifo.data[priv->tsi_raw_fifo.head];
+	incr_with_wrap_raw_fifo(priv->tsi_raw_fifo.head);
+
+	for (cnt = 2; cnt <= TSI_AVERAGE_FILTER_SIZE; cnt++) {
+
+		tsi_avg_data->x +=
+			priv->tsi_raw_fifo.data[priv->tsi_raw_fifo.head].x;
+		tsi_avg_data->y +=
+			priv->tsi_raw_fifo.data[priv->tsi_raw_fifo.head].y;
+		tsi_avg_data->z +=
+			priv->tsi_raw_fifo.data[priv->tsi_raw_fifo.head].z;
+
+		incr_with_wrap_raw_fifo(priv->tsi_raw_fifo.head);
+	}
+
+	up(&priv->tsi_raw_fifo.lock);
+
+	tsi_avg_data->x /= TSI_AVERAGE_FILTER_SIZE;
+	tsi_avg_data->y /= TSI_AVERAGE_FILTER_SIZE;
+	tsi_avg_data->z /= TSI_AVERAGE_FILTER_SIZE;
+
+#if DA9052_TSI_AVG_FLT_DATA_PROFILING
+	printk(KERN_DEBUG "A\tX\t%4d\tY\t%4d\tZ\t%4d\n",
+			(u16)tsi_avg_data->x,
+			(u16)tsi_avg_data->y,
+			(u16)tsi_avg_data->z);
+#endif
+
+	return;
+}
+#endif
+
+s32 da9052_tsi_raw_proc_thread(void *ptr)
+{
+	struct da9052_tsi_data coord;
+	u8 calib_ok, range_ok;
+	struct calib_cfg_t *tsi_calib = get_calib_config();
+	struct input_dev *ip_dev = (struct input_dev *)
+				da9052_tsi_get_input_dev(
+						(u8)TSI_INPUT_DEVICE_OFF);
+	struct da9052_ts_priv *priv = (struct da9052_ts_priv *)ptr;
+
+	set_freezable();
+
+	while (priv->tsi_raw_proc_thread.state == ACTIVE) {
+
+		try_to_freeze();
+
+		set_current_state(TASK_INTERRUPTIBLE);
+		schedule_timeout(
+			msecs_to_jiffies(priv->tsi_raw_data_poll_interval));
+
+		if (priv->early_data_flag || (get_raw_data_cnt(priv) == 0))
+			continue;
+
+		calib_ok = TRUE;
+		range_ok = TRUE;
+
+#if (ENABLE_AVERAGE_FILTER)
+
+		if (get_raw_data_cnt(priv) < TSI_AVERAGE_FILTER_SIZE)
+			continue;
+
+		da9052_tsi_avrg_filter(priv, &coord);
+
+#else
+
+		if (down_interruptible(&priv->tsi_raw_fifo.lock))
+			continue;
+
+		coord = priv->tsi_raw_fifo.data[priv->tsi_raw_fifo.head];
+		incr_with_wrap_raw_fifo(priv->tsi_raw_fifo.head);
+
+		up(&priv->tsi_raw_fifo.lock);
+
+#endif
+
+		if (tsi_calib->calibrate_flag) {
+			calib_ok = da9052_tsi_get_calib_display_point(&coord);
+
+			if ((coord.x < DISPLAY_X_MIN) ||
+				(coord.x > DISPLAY_X_MAX) ||
+				(coord.y < DISPLAY_Y_MIN) ||
+						(coord.y > DISPLAY_Y_MAX))
+				range_ok = FALSE;
+		}
+
+		if (calib_ok && range_ok) {
+			input_report_abs(ip_dev, BTN_TOUCH, 1);
+			input_report_abs(ip_dev, ABS_X, coord.x);
+			input_report_abs(ip_dev, ABS_Y, coord.y);
+			input_sync(ip_dev);
+
+			priv->os_data_cnt++;
+
+#if DA9052_TSI_OS_DATA_PROFILING
+		printk(KERN_DEBUG "O\tX\t%4d\tY\t%4d\tZ\t%4d\n",  (u16)coord.x,
+						(u16)coord.y, (u16)coord.z);
+#endif
+		} else {
+			if (!calib_ok) {
+				DA9052_DEBUG("%s: ", __func__);
+				DA9052_DEBUG("calibration Failed\n");
+			}
+			if (!range_ok) {
+				DA9052_DEBUG("%s: ", __func__);
+				DA9052_DEBUG("sample beyond display ");
+				DA9052_DEBUG("panel dimension\n");
+			}
+		}
+	}
+	priv->tsi_raw_proc_thread.thread_task = NULL;
+	complete_and_exit(&priv->tsi_raw_proc_thread.notifier, 0);
+	return 0;
+
+}
+
+#if (ENABLE_TSI_DEBOUNCE)
+static s32 da9052_tsi_calc_debounce_data(struct da9052_tsi_data *raw_data)
+{
+#if (TSI_DEBOUNCE_DATA_CNT)
+	u8 cnt;
+	struct da9052_tsi_data	temp = {.x = 0, .y = 0, .z = 0};
+
+	priv->tsi_raw_fifo.data[priv->tsi_raw_fifo.tail] = (*raw_data);
+	incr_with_wrap_raw_fifo(priv->tsi_raw_fifo.tail);
+
+	if (get_raw_data_cnt(priv) <= TSI_DEBOUNCE_DATA_CNT)
+		return -FAILURE;
+
+	for (cnt = 1; cnt <= TSI_DEBOUNCE_DATA_CNT; cnt++) {
+		temp.x += priv->tsi_raw_fifo.data[priv->tsi_raw_fifo.head].x;
+		temp.y += priv->tsi_raw_fifo.data[priv->tsi_raw_fifo.head].y;
+		temp.z += priv->tsi_raw_fifo.data[priv->tsi_raw_fifo.head].z;
+
+		incr_with_wrap_raw_fifo(priv->tsi_raw_fifo.head);
+	}
+
+	temp.x /= TSI_DEBOUNCE_DATA_CNT;
+	temp.y /= TSI_DEBOUNCE_DATA_CNT;
+	temp.z /= TSI_DEBOUNCE_DATA_CNT;
+
+	priv->tsi_raw_fifo.tail = priv->tsi_raw_fifo.head;
+	priv->tsi_raw_fifo.data[priv->tsi_raw_fifo.tail] = temp;
+	incr_with_wrap_raw_fifo(priv->tsi_raw_fifo.tail);
+
+#if DA9052_TSI_PRINT_DEBOUNCED_DATA
+	printk(KERN_DEBUG "D: X: %d Y: %d Z: %d\n",
+	       (u16)temp.x, (u16)temp.y, (u16)temp.z);
+#endif
+
+#endif
+	priv->debounce_over = TRUE;
+
+	return 0;
+}
+#endif
+
+# if (ENABLE_WINDOW_FILTER)
+static s32 diff_within_window(struct da9052_tsi_data *prev_raw_data,
+				struct da9052_tsi_data *cur_raw_data)
+{
+	s32 ret = -EINVAL;
+	s32 x, y;
+	x = ((cur_raw_data->x) - (prev_raw_data->x));
+	y = ((cur_raw_data->y) - (prev_raw_data->y));
+
+	if (WITHIN_WINDOW(x, y)) {
+
+#if DA9052_TSI_WIN_FLT_DATA_PROFILING
+		printk(KERN_DEBUG "W\tX\t%4d\tY\t%4d\tZ\t%4d\n",
+					(u16)cur_raw_data->x,
+					(u16)cur_raw_data->y,
+					(u16)cur_raw_data->z);
+#endif
+		ret = 0;
+	}
+	return ret;
+}
+
+static s32 da9052_tsi_window_filter(struct da9052_ts_priv *priv,
+					struct da9052_tsi_data *raw_data)
+{
+	u8 ref_found;
+	u32 cur, next;
+	s32 ret = -EINVAL;
+	static struct da9052_tsi_data prev_raw_data;
+
+	if (priv->win_reference_valid == TRUE) {
+
+#if DA9052_TSI_PRINT_PREVIOUS_DATA
+		printk(KERN_DEBUG "P: X: %d Y: %d Z: %d\n",
+		(u16)prev_raw_data.x, (u16)prev_raw_data.y,
+		(u16)prev_raw_data.z);
+#endif
+		ret = diff_within_window(&prev_raw_data, raw_data);
+		if (!ret)
+			prev_raw_data = (*raw_data);
+	} else {
+		priv->tsi_raw_fifo.data[priv->tsi_raw_fifo.tail] = (*raw_data);
+		incr_with_wrap_raw_fifo(priv->tsi_raw_fifo.tail);
+
+		if (get_raw_data_cnt(priv) == SAMPLE_CNT_FOR_WIN_REF) {
+
+			ref_found = FALSE;
+
+			next = cur = priv->tsi_raw_fifo.head;
+			incr_with_wrap_raw_fifo(next);
+
+			while (next <= priv->tsi_raw_fifo.tail) {
+				ret = diff_within_window(
+						&priv->tsi_raw_fifo.data[cur],
+						&priv->tsi_raw_fifo.data[next]
+						);
+				if (ret == SUCCESS) {
+					ref_found = TRUE;
+					break;
+				}
+				incr_with_wrap_raw_fifo(cur);
+				incr_with_wrap_raw_fifo(next);
+
+			}
+
+			if (ref_found == FALSE)
+				priv->tsi_raw_fifo.tail =
+					priv->tsi_raw_fifo.head;
+			else {
+				prev_raw_data = priv->tsi_raw_fifo.data[cur];
+
+				prev_raw_data.x +=
+					priv->tsi_raw_fifo.data[next].x;
+				prev_raw_data.y +=
+					priv->tsi_raw_fifo.data[next].y;
+				prev_raw_data.z +=
+					priv->tsi_raw_fifo.data[next].z;
+
+				prev_raw_data.x = prev_raw_data.x / 2;
+				prev_raw_data.y = prev_raw_data.y / 2;
+				prev_raw_data.z = prev_raw_data.z / 2;
+
+				(*raw_data) = prev_raw_data;
+
+				priv->tsi_raw_fifo.tail =
+						priv->tsi_raw_fifo.head;
+
+				priv->win_reference_valid = TRUE;
+				ret = SUCCESS;
+			}
+		}
+	}
+	return ret;
+}
+#endif
+static inline void clean_tsi_reg_fifo(struct da9052_ts_priv *priv)
+{
+	priv->tsi_reg_fifo.head = FIRST_SAMPLE;
+	priv->tsi_reg_fifo.tail = FIRST_SAMPLE;
+}
+
+static inline void clean_tsi_raw_fifo(struct da9052_ts_priv *priv)
+{
+	priv->tsi_raw_fifo.head = FIRST_SAMPLE;
+	priv->tsi_raw_fifo.tail = FIRST_SAMPLE;
+}
+